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 struct cam_path *path; 1335 1336 /* 1337 * Install a global async callback. 1338 */ 1339 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1340 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1341 1342 if (status == CAM_REQ_CMP) { 1343 /* Register the async callbacks of interrest */ 1344 struct ccb_setasync csa; /* 1345 * This is an immediate CCB, 1346 * so using the stack is OK 1347 */ 1348 xpt_setup_ccb(&csa.ccb_h, path, 5); 1349 csa.ccb_h.func_code = XPT_SASYNC_CB; 1350 csa.event_enable = AC_FOUND_DEVICE; 1351 csa.callback = saasync; 1352 csa.callback_arg = NULL; 1353 xpt_action((union ccb *)&csa); 1354 status = csa.ccb_h.status; 1355 xpt_free_path(path); 1356 } 1357 1358 if (status != CAM_REQ_CMP) { 1359 printf("sa: Failed to attach master async callback " 1360 "due to status 0x%x!\n", status); 1361 } 1362 } 1363 1364 static void 1365 saoninvalidate(struct cam_periph *periph) 1366 { 1367 struct sa_softc *softc; 1368 struct ccb_setasync csa; 1369 1370 softc = (struct sa_softc *)periph->softc; 1371 1372 /* 1373 * De-register any async callbacks. 1374 */ 1375 xpt_setup_ccb(&csa.ccb_h, periph->path, 1376 /* priority */ 5); 1377 csa.ccb_h.func_code = XPT_SASYNC_CB; 1378 csa.event_enable = 0; 1379 csa.callback = saasync; 1380 csa.callback_arg = periph; 1381 xpt_action((union ccb *)&csa); 1382 1383 softc->flags |= SA_FLAG_INVALID; 1384 1385 /* 1386 * Return all queued I/O with ENXIO. 1387 * XXX Handle any transactions queued to the card 1388 * with XPT_ABORT_CCB. 1389 */ 1390 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1391 softc->queue_count = 0; 1392 1393 xpt_print(periph->path, "lost device\n"); 1394 1395 } 1396 1397 static void 1398 sacleanup(struct cam_periph *periph) 1399 { 1400 struct sa_softc *softc; 1401 int i; 1402 1403 softc = (struct sa_softc *)periph->softc; 1404 1405 devstat_remove_entry(softc->device_stats); 1406 1407 destroy_dev(softc->devs.ctl_dev); 1408 1409 for (i = 0; i < SA_NUM_MODES; i++) { 1410 destroy_dev(softc->devs.mode_devs[i].r_dev); 1411 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1412 destroy_dev(softc->devs.mode_devs[i].er_dev); 1413 } 1414 1415 xpt_print(periph->path, "removing device entry\n"); 1416 free(softc, M_SCSISA); 1417 } 1418 1419 static void 1420 saasync(void *callback_arg, u_int32_t code, 1421 struct cam_path *path, void *arg) 1422 { 1423 struct cam_periph *periph; 1424 1425 periph = (struct cam_periph *)callback_arg; 1426 switch (code) { 1427 case AC_FOUND_DEVICE: 1428 { 1429 struct ccb_getdev *cgd; 1430 cam_status status; 1431 1432 cgd = (struct ccb_getdev *)arg; 1433 if (cgd == NULL) 1434 break; 1435 1436 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1437 break; 1438 1439 /* 1440 * Allocate a peripheral instance for 1441 * this device and start the probe 1442 * process. 1443 */ 1444 status = cam_periph_alloc(saregister, saoninvalidate, 1445 sacleanup, sastart, 1446 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1447 saasync, AC_FOUND_DEVICE, cgd); 1448 1449 if (status != CAM_REQ_CMP 1450 && status != CAM_REQ_INPROG) 1451 printf("saasync: Unable to probe new device " 1452 "due to status 0x%x\n", status); 1453 break; 1454 } 1455 default: 1456 cam_periph_async(periph, code, path, arg); 1457 break; 1458 } 1459 } 1460 1461 static cam_status 1462 saregister(struct cam_periph *periph, void *arg) 1463 { 1464 struct sa_softc *softc; 1465 struct ccb_setasync csa; 1466 struct ccb_getdev *cgd; 1467 caddr_t match; 1468 int i; 1469 1470 cgd = (struct ccb_getdev *)arg; 1471 if (periph == NULL) { 1472 printf("saregister: periph was NULL!!\n"); 1473 return (CAM_REQ_CMP_ERR); 1474 } 1475 1476 if (cgd == NULL) { 1477 printf("saregister: no getdev CCB, can't register device\n"); 1478 return (CAM_REQ_CMP_ERR); 1479 } 1480 1481 softc = (struct sa_softc *) 1482 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1483 if (softc == NULL) { 1484 printf("saregister: Unable to probe new device. " 1485 "Unable to allocate softc\n"); 1486 return (CAM_REQ_CMP_ERR); 1487 } 1488 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1489 softc->state = SA_STATE_NORMAL; 1490 softc->fileno = (daddr_t) -1; 1491 softc->blkno = (daddr_t) -1; 1492 1493 bioq_init(&softc->bio_queue); 1494 periph->softc = softc; 1495 1496 /* 1497 * See if this device has any quirks. 1498 */ 1499 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1500 (caddr_t)sa_quirk_table, 1501 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1502 sizeof(*sa_quirk_table), scsi_inquiry_match); 1503 1504 if (match != NULL) { 1505 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1506 softc->last_media_blksize = 1507 ((struct sa_quirk_entry *)match)->prefblk; 1508 #ifdef CAMDEBUG 1509 xpt_print(periph->path, "found quirk entry %d\n", 1510 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1511 #endif 1512 } else 1513 softc->quirks = SA_QUIRK_NONE; 1514 1515 /* 1516 * The SA driver supports a blocksize, but we don't know the 1517 * blocksize until we media is inserted. So, set a flag to 1518 * indicate that the blocksize is unavailable right now. 1519 */ 1520 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1521 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1522 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1523 1524 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1525 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1526 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1527 softc->devs.ctl_dev->si_drv1 = periph; 1528 1529 for (i = 0; i < SA_NUM_MODES; i++) { 1530 1531 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1532 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1533 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1534 periph->periph_name, periph->unit_number, i); 1535 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1536 1537 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1538 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1539 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1540 periph->periph_name, periph->unit_number, i); 1541 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1542 1543 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1544 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1545 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1546 periph->periph_name, periph->unit_number, i); 1547 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1548 1549 /* 1550 * Make the (well known) aliases for the first mode. 1551 */ 1552 if (i == 0) { 1553 struct cdev *alias; 1554 1555 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1556 "%s%d", periph->periph_name, periph->unit_number); 1557 alias->si_drv1 = periph; 1558 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1559 "n%s%d", periph->periph_name, periph->unit_number); 1560 alias->si_drv1 = periph; 1561 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1562 "e%s%d", periph->periph_name, periph->unit_number); 1563 alias->si_drv1 = periph; 1564 } 1565 } 1566 1567 /* 1568 * Add an async callback so that we get 1569 * notified if this device goes away. 1570 */ 1571 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1572 csa.ccb_h.func_code = XPT_SASYNC_CB; 1573 csa.event_enable = AC_LOST_DEVICE; 1574 csa.callback = saasync; 1575 csa.callback_arg = periph; 1576 xpt_action((union ccb *)&csa); 1577 1578 xpt_announce_periph(periph, NULL); 1579 1580 return (CAM_REQ_CMP); 1581 } 1582 1583 static void 1584 sastart(struct cam_periph *periph, union ccb *start_ccb) 1585 { 1586 struct sa_softc *softc; 1587 1588 softc = (struct sa_softc *)periph->softc; 1589 1590 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1591 1592 1593 switch (softc->state) { 1594 case SA_STATE_NORMAL: 1595 { 1596 /* Pull a buffer from the queue and get going on it */ 1597 struct bio *bp; 1598 1599 /* 1600 * See if there is a buf with work for us to do.. 1601 */ 1602 bp = bioq_first(&softc->bio_queue); 1603 if (periph->immediate_priority <= periph->pinfo.priority) { 1604 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1605 ("queuing for immediate ccb\n")); 1606 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1607 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1608 periph_links.sle); 1609 periph->immediate_priority = CAM_PRIORITY_NONE; 1610 wakeup(&periph->ccb_list); 1611 } else if (bp == NULL) { 1612 xpt_release_ccb(start_ccb); 1613 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1614 struct bio *done_bp; 1615 again: 1616 softc->queue_count--; 1617 bioq_remove(&softc->bio_queue, bp); 1618 bp->bio_resid = bp->bio_bcount; 1619 done_bp = bp; 1620 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1621 /* 1622 * We now just clear errors in this case 1623 * and let the residual be the notifier. 1624 */ 1625 bp->bio_error = 0; 1626 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1627 /* 1628 * This can only happen if we're reading 1629 * in fixed length mode. In this case, 1630 * we dump the rest of the list the 1631 * same way. 1632 */ 1633 bp->bio_error = 0; 1634 if (bioq_first(&softc->bio_queue) != NULL) { 1635 biodone(done_bp); 1636 goto again; 1637 } 1638 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1639 bp->bio_error = EIO; 1640 bp->bio_flags |= BIO_ERROR; 1641 } 1642 bp = bioq_first(&softc->bio_queue); 1643 /* 1644 * Only if we have no other buffers queued up 1645 * do we clear the pending error flag. 1646 */ 1647 if (bp == NULL) 1648 softc->flags &= ~SA_FLAG_ERR_PENDING; 1649 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1650 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1651 "%d more buffers queued up\n", 1652 (softc->flags & SA_FLAG_ERR_PENDING), 1653 (bp != NULL)? "not " : " ", softc->queue_count)); 1654 xpt_release_ccb(start_ccb); 1655 biodone(done_bp); 1656 } else { 1657 u_int32_t length; 1658 1659 bioq_remove(&softc->bio_queue, bp); 1660 softc->queue_count--; 1661 1662 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1663 if (softc->blk_shift != 0) { 1664 length = 1665 bp->bio_bcount >> softc->blk_shift; 1666 } else if (softc->media_blksize != 0) { 1667 length = bp->bio_bcount / 1668 softc->media_blksize; 1669 } else { 1670 bp->bio_error = EIO; 1671 xpt_print(periph->path, "zero blocksize" 1672 " for FIXED length writes?\n"); 1673 biodone(bp); 1674 break; 1675 } 1676 #if 0 1677 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1678 ("issuing a %d fixed record %s\n", 1679 length, (bp->bio_cmd == BIO_READ)? "read" : 1680 "write")); 1681 #endif 1682 } else { 1683 length = bp->bio_bcount; 1684 #if 0 1685 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1686 ("issuing a %d variable byte %s\n", 1687 length, (bp->bio_cmd == BIO_READ)? "read" : 1688 "write")); 1689 #endif 1690 } 1691 devstat_start_transaction_bio(softc->device_stats, bp); 1692 /* 1693 * Some people have theorized that we should 1694 * suppress illegal length indication if we are 1695 * running in variable block mode so that we don't 1696 * have to request sense every time our requested 1697 * block size is larger than the written block. 1698 * The residual information from the ccb allows 1699 * us to identify this situation anyway. The only 1700 * problem with this is that we will not get 1701 * information about blocks that are larger than 1702 * our read buffer unless we set the block size 1703 * in the mode page to something other than 0. 1704 * 1705 * I believe that this is a non-issue. If user apps 1706 * don't adjust their read size to match our record 1707 * size, that's just life. Anyway, the typical usage 1708 * would be to issue, e.g., 64KB reads and occasionally 1709 * have to do deal with 512 byte or 1KB intermediate 1710 * records. 1711 */ 1712 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1713 MTIO_DSREG_RD : MTIO_DSREG_WR; 1714 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1715 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1716 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1717 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1718 IO_TIMEOUT); 1719 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1720 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1721 start_ccb->ccb_h.ccb_bp = bp; 1722 bp = bioq_first(&softc->bio_queue); 1723 xpt_action(start_ccb); 1724 } 1725 1726 if (bp != NULL) { 1727 /* Have more work to do, so ensure we stay scheduled */ 1728 xpt_schedule(periph, 1); 1729 } 1730 break; 1731 } 1732 case SA_STATE_ABNORMAL: 1733 default: 1734 panic("state 0x%x in sastart", softc->state); 1735 break; 1736 } 1737 } 1738 1739 1740 static void 1741 sadone(struct cam_periph *periph, union ccb *done_ccb) 1742 { 1743 struct sa_softc *softc; 1744 struct ccb_scsiio *csio; 1745 1746 softc = (struct sa_softc *)periph->softc; 1747 csio = &done_ccb->csio; 1748 switch (CCB_Type(csio)) { 1749 case SA_CCB_BUFFER_IO: 1750 { 1751 struct bio *bp; 1752 int error; 1753 1754 softc->dsreg = MTIO_DSREG_REST; 1755 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1756 error = 0; 1757 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1758 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1759 /* 1760 * A retry was scheduled, so just return. 1761 */ 1762 return; 1763 } 1764 } 1765 1766 if (error == EIO) { 1767 1768 /* 1769 * Catastrophic error. Mark the tape as frozen 1770 * (we no longer know tape position). 1771 * 1772 * Return all queued I/O with EIO, and unfreeze 1773 * our queue so that future transactions that 1774 * attempt to fix this problem can get to the 1775 * device. 1776 * 1777 */ 1778 1779 softc->flags |= SA_FLAG_TAPE_FROZEN; 1780 bioq_flush(&softc->bio_queue, NULL, EIO); 1781 } 1782 if (error != 0) { 1783 bp->bio_resid = bp->bio_bcount; 1784 bp->bio_error = error; 1785 bp->bio_flags |= BIO_ERROR; 1786 /* 1787 * In the error case, position is updated in saerror. 1788 */ 1789 } else { 1790 bp->bio_resid = csio->resid; 1791 bp->bio_error = 0; 1792 if (csio->resid != 0) { 1793 bp->bio_flags |= BIO_ERROR; 1794 } 1795 if (bp->bio_cmd == BIO_WRITE) { 1796 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1797 softc->filemarks = 0; 1798 } 1799 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1800 (softc->blkno != (daddr_t) -1)) { 1801 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1802 u_int32_t l; 1803 if (softc->blk_shift != 0) { 1804 l = bp->bio_bcount >> 1805 softc->blk_shift; 1806 } else { 1807 l = bp->bio_bcount / 1808 softc->media_blksize; 1809 } 1810 softc->blkno += (daddr_t) l; 1811 } else { 1812 softc->blkno++; 1813 } 1814 } 1815 } 1816 /* 1817 * If we had an error (immediate or pending), 1818 * release the device queue now. 1819 */ 1820 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1821 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1822 #ifdef CAMDEBUG 1823 if (error || bp->bio_resid) { 1824 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1825 ("error %d resid %ld count %ld\n", error, 1826 bp->bio_resid, bp->bio_bcount)); 1827 } 1828 #endif 1829 biofinish(bp, softc->device_stats, 0); 1830 break; 1831 } 1832 case SA_CCB_WAITING: 1833 { 1834 /* Caller will release the CCB */ 1835 wakeup(&done_ccb->ccb_h.cbfcnp); 1836 return; 1837 } 1838 } 1839 xpt_release_ccb(done_ccb); 1840 } 1841 1842 /* 1843 * Mount the tape (make sure it's ready for I/O). 1844 */ 1845 static int 1846 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1847 { 1848 struct sa_softc *softc; 1849 union ccb *ccb; 1850 int error; 1851 1852 /* 1853 * oflags can be checked for 'kind' of open (read-only check) - later 1854 * dev can be checked for a control-mode or compression open - later 1855 */ 1856 UNUSED_PARAMETER(oflags); 1857 UNUSED_PARAMETER(dev); 1858 1859 1860 softc = (struct sa_softc *)periph->softc; 1861 1862 /* 1863 * This should determine if something has happend since the last 1864 * open/mount that would invalidate the mount. We do *not* want 1865 * to retry this command- we just want the status. But we only 1866 * do this if we're mounted already- if we're not mounted, 1867 * we don't care about the unit read state and can instead use 1868 * this opportunity to attempt to reserve the tape unit. 1869 */ 1870 1871 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 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 if (error == ENXIO) { 1879 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1880 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1881 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1882 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1883 softc->device_stats); 1884 QFRLS(ccb); 1885 } else if (error) { 1886 /* 1887 * We don't need to freeze the tape because we 1888 * will now attempt to rewind/load it. 1889 */ 1890 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1891 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1892 xpt_print(periph->path, 1893 "error %d on TUR in samount\n", error); 1894 } 1895 } 1896 } else { 1897 error = sareservereleaseunit(periph, TRUE); 1898 if (error) { 1899 return (error); 1900 } 1901 ccb = cam_periph_getccb(periph, 1); 1902 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1903 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1904 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1905 softc->device_stats); 1906 QFRLS(ccb); 1907 } 1908 1909 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1910 struct scsi_read_block_limits_data *rblim = NULL; 1911 int comp_enabled, comp_supported; 1912 u_int8_t write_protect, guessing = 0; 1913 1914 /* 1915 * Clear out old state. 1916 */ 1917 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1918 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1919 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1920 softc->filemarks = 0; 1921 1922 /* 1923 * *Very* first off, make sure we're loaded to BOT. 1924 */ 1925 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1926 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1927 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1928 softc->device_stats); 1929 QFRLS(ccb); 1930 1931 /* 1932 * In case this doesn't work, do a REWIND instead 1933 */ 1934 if (error) { 1935 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1936 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1937 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1938 softc->device_stats); 1939 QFRLS(ccb); 1940 } 1941 if (error) { 1942 xpt_release_ccb(ccb); 1943 goto exit; 1944 } 1945 1946 /* 1947 * Do a dummy test read to force access to the 1948 * media so that the drive will really know what's 1949 * there. We actually don't really care what the 1950 * blocksize on tape is and don't expect to really 1951 * read a full record. 1952 */ 1953 rblim = (struct scsi_read_block_limits_data *) 1954 malloc(8192, M_TEMP, M_WAITOK); 1955 if (rblim == NULL) { 1956 xpt_print(periph->path, "no memory for test read\n"); 1957 xpt_release_ccb(ccb); 1958 error = ENOMEM; 1959 goto exit; 1960 } 1961 1962 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1963 scsi_sa_read_write(&ccb->csio, 0, sadone, 1964 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1965 (void *) rblim, 8192, SSD_FULL_SIZE, 1966 IO_TIMEOUT); 1967 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1968 softc->device_stats); 1969 QFRLS(ccb); 1970 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1971 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1972 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1973 SF_NO_PRINT | SF_RETRY_UA, 1974 softc->device_stats); 1975 QFRLS(ccb); 1976 if (error) { 1977 xpt_print(periph->path, 1978 "unable to rewind after test read\n"); 1979 xpt_release_ccb(ccb); 1980 goto exit; 1981 } 1982 } 1983 1984 /* 1985 * Next off, determine block limits. 1986 */ 1987 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1988 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1989 1990 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1991 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 1992 1993 QFRLS(ccb); 1994 xpt_release_ccb(ccb); 1995 1996 if (error != 0) { 1997 /* 1998 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1999 * a MANDATORY command. Anyway- it doesn't matter- 2000 * we can proceed anyway. 2001 */ 2002 softc->blk_gran = 0; 2003 softc->max_blk = ~0; 2004 softc->min_blk = 0; 2005 } else { 2006 if (softc->scsi_rev >= SCSI_REV_SPC) { 2007 softc->blk_gran = RBL_GRAN(rblim); 2008 } else { 2009 softc->blk_gran = 0; 2010 } 2011 /* 2012 * We take max_blk == min_blk to mean a default to 2013 * fixed mode- but note that whatever we get out of 2014 * sagetparams below will actually determine whether 2015 * we are actually *in* fixed mode. 2016 */ 2017 softc->max_blk = scsi_3btoul(rblim->maximum); 2018 softc->min_blk = scsi_2btoul(rblim->minimum); 2019 2020 2021 } 2022 /* 2023 * Next, perform a mode sense to determine 2024 * current density, blocksize, compression etc. 2025 */ 2026 error = sagetparams(periph, SA_PARAM_ALL, 2027 &softc->media_blksize, 2028 &softc->media_density, 2029 &softc->media_numblks, 2030 &softc->buffer_mode, &write_protect, 2031 &softc->speed, &comp_supported, 2032 &comp_enabled, &softc->comp_algorithm, 2033 NULL); 2034 2035 if (error != 0) { 2036 /* 2037 * We could work a little harder here. We could 2038 * adjust our attempts to get information. It 2039 * might be an ancient tape drive. If someone 2040 * nudges us, we'll do that. 2041 */ 2042 goto exit; 2043 } 2044 2045 /* 2046 * If no quirk has determined that this is a device that is 2047 * preferred to be in fixed or variable mode, now is the time 2048 * to find out. 2049 */ 2050 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2051 guessing = 1; 2052 /* 2053 * This could be expensive to find out. Luckily we 2054 * only need to do this once. If we start out in 2055 * 'default' mode, try and set ourselves to one 2056 * of the densities that would determine a wad 2057 * of other stuff. Go from highest to lowest. 2058 */ 2059 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2060 int i; 2061 static u_int8_t ctry[] = { 2062 SCSI_DENSITY_HALFINCH_PE, 2063 SCSI_DENSITY_HALFINCH_6250C, 2064 SCSI_DENSITY_HALFINCH_6250, 2065 SCSI_DENSITY_HALFINCH_1600, 2066 SCSI_DENSITY_HALFINCH_800, 2067 SCSI_DENSITY_QIC_4GB, 2068 SCSI_DENSITY_QIC_2GB, 2069 SCSI_DENSITY_QIC_525_320, 2070 SCSI_DENSITY_QIC_150, 2071 SCSI_DENSITY_QIC_120, 2072 SCSI_DENSITY_QIC_24, 2073 SCSI_DENSITY_QIC_11_9TRK, 2074 SCSI_DENSITY_QIC_11_4TRK, 2075 SCSI_DENSITY_QIC_1320, 2076 SCSI_DENSITY_QIC_3080, 2077 0 2078 }; 2079 for (i = 0; ctry[i]; i++) { 2080 error = sasetparams(periph, 2081 SA_PARAM_DENSITY, 0, ctry[i], 2082 0, SF_NO_PRINT); 2083 if (error == 0) { 2084 softc->media_density = ctry[i]; 2085 break; 2086 } 2087 } 2088 } 2089 switch (softc->media_density) { 2090 case SCSI_DENSITY_QIC_11_4TRK: 2091 case SCSI_DENSITY_QIC_11_9TRK: 2092 case SCSI_DENSITY_QIC_24: 2093 case SCSI_DENSITY_QIC_120: 2094 case SCSI_DENSITY_QIC_150: 2095 case SCSI_DENSITY_QIC_525_320: 2096 case SCSI_DENSITY_QIC_1320: 2097 case SCSI_DENSITY_QIC_3080: 2098 softc->quirks &= ~SA_QUIRK_2FM; 2099 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2100 softc->last_media_blksize = 512; 2101 break; 2102 case SCSI_DENSITY_QIC_4GB: 2103 case SCSI_DENSITY_QIC_2GB: 2104 softc->quirks &= ~SA_QUIRK_2FM; 2105 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2106 softc->last_media_blksize = 1024; 2107 break; 2108 default: 2109 softc->last_media_blksize = 2110 softc->media_blksize; 2111 softc->quirks |= SA_QUIRK_VARIABLE; 2112 break; 2113 } 2114 } 2115 2116 /* 2117 * If no quirk has determined that this is a device that needs 2118 * to have 2 Filemarks at EOD, now is the time to find out. 2119 */ 2120 2121 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2122 switch (softc->media_density) { 2123 case SCSI_DENSITY_HALFINCH_800: 2124 case SCSI_DENSITY_HALFINCH_1600: 2125 case SCSI_DENSITY_HALFINCH_6250: 2126 case SCSI_DENSITY_HALFINCH_6250C: 2127 case SCSI_DENSITY_HALFINCH_PE: 2128 softc->quirks &= ~SA_QUIRK_1FM; 2129 softc->quirks |= SA_QUIRK_2FM; 2130 break; 2131 default: 2132 break; 2133 } 2134 } 2135 2136 /* 2137 * Now validate that some info we got makes sense. 2138 */ 2139 if ((softc->max_blk < softc->media_blksize) || 2140 (softc->min_blk > softc->media_blksize && 2141 softc->media_blksize)) { 2142 xpt_print(periph->path, 2143 "BLOCK LIMITS (%d..%d) could not match current " 2144 "block settings (%d)- adjusting\n", softc->min_blk, 2145 softc->max_blk, softc->media_blksize); 2146 softc->max_blk = softc->min_blk = 2147 softc->media_blksize; 2148 } 2149 2150 /* 2151 * Now put ourselves into the right frame of mind based 2152 * upon quirks... 2153 */ 2154 tryagain: 2155 /* 2156 * If we want to be in FIXED mode and our current blocksize 2157 * is not equal to our last blocksize (if nonzero), try and 2158 * set ourselves to this last blocksize (as the 'preferred' 2159 * block size). The initial quirkmatch at registry sets the 2160 * initial 'last' blocksize. If, for whatever reason, this 2161 * 'last' blocksize is zero, set the blocksize to 512, 2162 * or min_blk if that's larger. 2163 */ 2164 if ((softc->quirks & SA_QUIRK_FIXED) && 2165 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2166 (softc->media_blksize != softc->last_media_blksize)) { 2167 softc->media_blksize = softc->last_media_blksize; 2168 if (softc->media_blksize == 0) { 2169 softc->media_blksize = 512; 2170 if (softc->media_blksize < softc->min_blk) { 2171 softc->media_blksize = softc->min_blk; 2172 } 2173 } 2174 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2175 softc->media_blksize, 0, 0, SF_NO_PRINT); 2176 if (error) { 2177 xpt_print(periph->path, 2178 "unable to set fixed blocksize to %d\n", 2179 softc->media_blksize); 2180 goto exit; 2181 } 2182 } 2183 2184 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2185 (softc->media_blksize != 0)) { 2186 softc->last_media_blksize = softc->media_blksize; 2187 softc->media_blksize = 0; 2188 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2189 0, 0, 0, SF_NO_PRINT); 2190 if (error) { 2191 /* 2192 * If this fails and we were guessing, just 2193 * assume that we got it wrong and go try 2194 * fixed block mode. Don't even check against 2195 * density code at this point. 2196 */ 2197 if (guessing) { 2198 softc->quirks &= ~SA_QUIRK_VARIABLE; 2199 softc->quirks |= SA_QUIRK_FIXED; 2200 if (softc->last_media_blksize == 0) 2201 softc->last_media_blksize = 512; 2202 goto tryagain; 2203 } 2204 xpt_print(periph->path, 2205 "unable to set variable blocksize\n"); 2206 goto exit; 2207 } 2208 } 2209 2210 /* 2211 * Now that we have the current block size, 2212 * set up some parameters for sastart's usage. 2213 */ 2214 if (softc->media_blksize) { 2215 softc->flags |= SA_FLAG_FIXED; 2216 if (powerof2(softc->media_blksize)) { 2217 softc->blk_shift = 2218 ffs(softc->media_blksize) - 1; 2219 softc->blk_mask = softc->media_blksize - 1; 2220 } else { 2221 softc->blk_mask = ~0; 2222 softc->blk_shift = 0; 2223 } 2224 } else { 2225 /* 2226 * The SCSI-3 spec allows 0 to mean "unspecified". 2227 * The SCSI-1 spec allows 0 to mean 'infinite'. 2228 * 2229 * Either works here. 2230 */ 2231 if (softc->max_blk == 0) { 2232 softc->max_blk = ~0; 2233 } 2234 softc->blk_shift = 0; 2235 if (softc->blk_gran != 0) { 2236 softc->blk_mask = softc->blk_gran - 1; 2237 } else { 2238 softc->blk_mask = 0; 2239 } 2240 } 2241 2242 if (write_protect) 2243 softc->flags |= SA_FLAG_TAPE_WP; 2244 2245 if (comp_supported) { 2246 if (softc->saved_comp_algorithm == 0) 2247 softc->saved_comp_algorithm = 2248 softc->comp_algorithm; 2249 softc->flags |= SA_FLAG_COMP_SUPP; 2250 if (comp_enabled) 2251 softc->flags |= SA_FLAG_COMP_ENABLED; 2252 } else 2253 softc->flags |= SA_FLAG_COMP_UNSUPP; 2254 2255 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2256 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2257 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2258 0, 0, SF_NO_PRINT); 2259 if (error == 0) { 2260 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2261 } else { 2262 xpt_print(periph->path, 2263 "unable to set buffered mode\n"); 2264 } 2265 error = 0; /* not an error */ 2266 } 2267 2268 2269 if (error == 0) { 2270 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2271 } 2272 exit: 2273 if (rblim != NULL) 2274 free(rblim, M_TEMP); 2275 2276 if (error != 0) { 2277 softc->dsreg = MTIO_DSREG_NIL; 2278 } else { 2279 softc->fileno = softc->blkno = 0; 2280 softc->dsreg = MTIO_DSREG_REST; 2281 } 2282 #ifdef SA_1FM_AT_EOD 2283 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2284 softc->quirks |= SA_QUIRK_1FM; 2285 #else 2286 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2287 softc->quirks |= SA_QUIRK_2FM; 2288 #endif 2289 } else 2290 xpt_release_ccb(ccb); 2291 2292 /* 2293 * If we return an error, we're not mounted any more, 2294 * so release any device reservation. 2295 */ 2296 if (error != 0) { 2297 (void) sareservereleaseunit(periph, FALSE); 2298 } else { 2299 /* 2300 * Clear I/O residual. 2301 */ 2302 softc->last_io_resid = 0; 2303 softc->last_ctl_resid = 0; 2304 } 2305 return (error); 2306 } 2307 2308 /* 2309 * How many filemarks do we need to write if we were to terminate the 2310 * tape session right now? Note that this can be a negative number 2311 */ 2312 2313 static int 2314 samarkswanted(struct cam_periph *periph) 2315 { 2316 int markswanted; 2317 struct sa_softc *softc; 2318 2319 softc = (struct sa_softc *)periph->softc; 2320 markswanted = 0; 2321 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2322 markswanted++; 2323 if (softc->quirks & SA_QUIRK_2FM) 2324 markswanted++; 2325 } 2326 markswanted -= softc->filemarks; 2327 return (markswanted); 2328 } 2329 2330 static int 2331 sacheckeod(struct cam_periph *periph) 2332 { 2333 int error; 2334 int markswanted; 2335 2336 markswanted = samarkswanted(periph); 2337 2338 if (markswanted > 0) { 2339 error = sawritefilemarks(periph, markswanted, FALSE); 2340 } else { 2341 error = 0; 2342 } 2343 return (error); 2344 } 2345 2346 static int 2347 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2348 { 2349 static const char *toobig = 2350 "%d-byte tape record bigger than supplied buffer\n"; 2351 struct cam_periph *periph; 2352 struct sa_softc *softc; 2353 struct ccb_scsiio *csio; 2354 struct scsi_sense_data *sense; 2355 u_int32_t resid = 0; 2356 int32_t info = 0; 2357 cam_status status; 2358 int error_code, sense_key, asc, ascq, error, aqvalid; 2359 2360 periph = xpt_path_periph(ccb->ccb_h.path); 2361 softc = (struct sa_softc *)periph->softc; 2362 csio = &ccb->csio; 2363 sense = &csio->sense_data; 2364 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2365 aqvalid = sense->extra_len >= 6; 2366 error = 0; 2367 2368 status = csio->ccb_h.status & CAM_STATUS_MASK; 2369 2370 /* 2371 * Calculate/latch up, any residuals... We do this in a funny 2-step 2372 * so we can print stuff here if we have CAM_DEBUG enabled for this 2373 * unit. 2374 */ 2375 if (status == CAM_SCSI_STATUS_ERROR) { 2376 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2377 info = (int32_t) scsi_4btoul(sense->info); 2378 resid = info; 2379 if ((softc->flags & SA_FLAG_FIXED) != 0) 2380 resid *= softc->media_blksize; 2381 } else { 2382 resid = csio->dxfer_len; 2383 info = resid; 2384 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2385 if (softc->media_blksize) 2386 info /= softc->media_blksize; 2387 } 2388 } 2389 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2390 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2391 sizeof (struct scsi_sense_data)); 2392 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2393 (int) csio->cdb_len); 2394 softc->last_io_resid = resid; 2395 softc->last_resid_was_io = 1; 2396 } else { 2397 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2398 sizeof (struct scsi_sense_data)); 2399 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2400 (int) csio->cdb_len); 2401 softc->last_ctl_resid = resid; 2402 softc->last_resid_was_io = 0; 2403 } 2404 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2405 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2406 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2407 sense_key, asc, ascq, status, 2408 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2409 } else { 2410 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2411 ("Cam Status 0x%x\n", status)); 2412 } 2413 2414 switch (status) { 2415 case CAM_REQ_CMP: 2416 return (0); 2417 case CAM_SCSI_STATUS_ERROR: 2418 /* 2419 * If a read/write command, we handle it here. 2420 */ 2421 if (CCB_Type(csio) != SA_CCB_WAITING) { 2422 break; 2423 } 2424 /* 2425 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2426 * on a non read/write command, we assume it's not an error 2427 * and propagate the residule and return. 2428 */ 2429 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2430 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2431 csio->resid = resid; 2432 QFRLS(ccb); 2433 return (0); 2434 } 2435 /* 2436 * Otherwise, we let the common code handle this. 2437 */ 2438 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2439 2440 /* 2441 * XXX: To Be Fixed 2442 * We cannot depend upon CAM honoring retry counts for these. 2443 */ 2444 case CAM_SCSI_BUS_RESET: 2445 case CAM_BDR_SENT: 2446 if (ccb->ccb_h.retry_count <= 0) { 2447 return (EIO); 2448 } 2449 /* FALLTHROUGH */ 2450 default: 2451 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2452 } 2453 2454 /* 2455 * Handle filemark, end of tape, mismatched record sizes.... 2456 * From this point out, we're only handling read/write cases. 2457 * Handle writes && reads differently. 2458 */ 2459 2460 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2461 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2462 csio->resid = resid; 2463 error = ENOSPC; 2464 } else if (sense->flags & SSD_EOM) { 2465 softc->flags |= SA_FLAG_EOM_PENDING; 2466 /* 2467 * Grotesque as it seems, the few times 2468 * I've actually seen a non-zero resid, 2469 * the tape drive actually lied and had 2470 * written all the data!. 2471 */ 2472 csio->resid = 0; 2473 } 2474 } else { 2475 csio->resid = resid; 2476 if (sense_key == SSD_KEY_BLANK_CHECK) { 2477 if (softc->quirks & SA_QUIRK_1FM) { 2478 error = 0; 2479 softc->flags |= SA_FLAG_EOM_PENDING; 2480 } else { 2481 error = EIO; 2482 } 2483 } else if (sense->flags & SSD_FILEMARK) { 2484 if (softc->flags & SA_FLAG_FIXED) { 2485 error = -1; 2486 softc->flags |= SA_FLAG_EOF_PENDING; 2487 } 2488 /* 2489 * Unconditionally, if we detected a filemark on a read, 2490 * mark that we've run moved a file ahead. 2491 */ 2492 if (softc->fileno != (daddr_t) -1) { 2493 softc->fileno++; 2494 softc->blkno = 0; 2495 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2496 } 2497 } 2498 } 2499 2500 /* 2501 * Incorrect Length usually applies to read, but can apply to writes. 2502 */ 2503 if (error == 0 && (sense->flags & SSD_ILI)) { 2504 if (info < 0) { 2505 xpt_print(csio->ccb_h.path, toobig, 2506 csio->dxfer_len - info); 2507 csio->resid = csio->dxfer_len; 2508 error = EIO; 2509 } else { 2510 csio->resid = resid; 2511 if (softc->flags & SA_FLAG_FIXED) { 2512 softc->flags |= SA_FLAG_EIO_PENDING; 2513 } 2514 /* 2515 * Bump the block number if we hadn't seen a filemark. 2516 * Do this independent of errors (we've moved anyway). 2517 */ 2518 if ((sense->flags & SSD_FILEMARK) == 0) { 2519 if (softc->blkno != (daddr_t) -1) { 2520 softc->blkno++; 2521 csio->ccb_h.ccb_pflags |= 2522 SA_POSITION_UPDATED; 2523 } 2524 } 2525 } 2526 } 2527 2528 if (error <= 0) { 2529 /* 2530 * Unfreeze the queue if frozen as we're not returning anything 2531 * to our waiters that would indicate an I/O error has occurred 2532 * (yet). 2533 */ 2534 QFRLS(ccb); 2535 error = 0; 2536 } 2537 return (error); 2538 } 2539 2540 static int 2541 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2542 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2543 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2544 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2545 sa_comp_t *tcs) 2546 { 2547 union ccb *ccb; 2548 void *mode_buffer; 2549 struct scsi_mode_header_6 *mode_hdr; 2550 struct scsi_mode_blk_desc *mode_blk; 2551 int mode_buffer_len; 2552 struct sa_softc *softc; 2553 u_int8_t cpage; 2554 int error; 2555 cam_status status; 2556 2557 softc = (struct sa_softc *)periph->softc; 2558 ccb = cam_periph_getccb(periph, 1); 2559 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2560 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2561 else 2562 cpage = SA_DATA_COMPRESSION_PAGE; 2563 2564 retry: 2565 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2566 2567 if (params_to_get & SA_PARAM_COMPRESSION) { 2568 if (softc->quirks & SA_QUIRK_NOCOMP) { 2569 *comp_supported = FALSE; 2570 params_to_get &= ~SA_PARAM_COMPRESSION; 2571 } else 2572 mode_buffer_len += sizeof (sa_comp_t); 2573 } 2574 2575 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2576 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2577 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2578 2579 /* it is safe to retry this */ 2580 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2581 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2582 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2583 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2584 2585 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2586 softc->device_stats); 2587 QFRLS(ccb); 2588 2589 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2590 2591 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2592 /* 2593 * Hmm. Let's see if we can try another page... 2594 * If we've already done that, give up on compression 2595 * for this device and remember this for the future 2596 * and attempt the request without asking for compression 2597 * info. 2598 */ 2599 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2600 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2601 goto retry; 2602 } 2603 softc->quirks |= SA_QUIRK_NOCOMP; 2604 free(mode_buffer, M_TEMP); 2605 goto retry; 2606 } else if (status == CAM_SCSI_STATUS_ERROR) { 2607 /* Tell the user about the fatal error. */ 2608 scsi_sense_print(&ccb->csio); 2609 goto sagetparamsexit; 2610 } 2611 2612 /* 2613 * If the user only wants the compression information, and 2614 * the device doesn't send back the block descriptor, it's 2615 * no big deal. If the user wants more than just 2616 * compression, though, and the device doesn't pass back the 2617 * block descriptor, we need to send another mode sense to 2618 * get the block descriptor. 2619 */ 2620 if ((mode_hdr->blk_desc_len == 0) && 2621 (params_to_get & SA_PARAM_COMPRESSION) && 2622 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2623 2624 /* 2625 * Decrease the mode buffer length by the size of 2626 * the compression page, to make sure the data 2627 * there doesn't get overwritten. 2628 */ 2629 mode_buffer_len -= sizeof (sa_comp_t); 2630 2631 /* 2632 * Now move the compression page that we presumably 2633 * got back down the memory chunk a little bit so 2634 * it doesn't get spammed. 2635 */ 2636 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2637 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2638 2639 /* 2640 * Now, we issue another mode sense and just ask 2641 * for the block descriptor, etc. 2642 */ 2643 2644 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2645 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2646 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2647 SCSIOP_TIMEOUT); 2648 2649 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2650 softc->device_stats); 2651 QFRLS(ccb); 2652 2653 if (error != 0) 2654 goto sagetparamsexit; 2655 } 2656 2657 if (params_to_get & SA_PARAM_BLOCKSIZE) 2658 *blocksize = scsi_3btoul(mode_blk->blklen); 2659 2660 if (params_to_get & SA_PARAM_NUMBLOCKS) 2661 *numblocks = scsi_3btoul(mode_blk->nblocks); 2662 2663 if (params_to_get & SA_PARAM_BUFF_MODE) 2664 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2665 2666 if (params_to_get & SA_PARAM_DENSITY) 2667 *density = mode_blk->density; 2668 2669 if (params_to_get & SA_PARAM_WP) 2670 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2671 2672 if (params_to_get & SA_PARAM_SPEED) 2673 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2674 2675 if (params_to_get & SA_PARAM_COMPRESSION) { 2676 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2677 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2678 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2679 *comp_supported = 2680 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2681 *comp_enabled = 2682 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2683 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2684 } else { 2685 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2686 /* 2687 * We don't really know whether this device supports 2688 * Data Compression if the the algorithm field is 2689 * zero. Just say we do. 2690 */ 2691 *comp_supported = TRUE; 2692 *comp_enabled = 2693 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2694 *comp_algorithm = cp->sel_comp_alg; 2695 } 2696 if (tcs != NULL) 2697 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2698 } 2699 2700 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2701 int idx; 2702 char *xyz = mode_buffer; 2703 xpt_print_path(periph->path); 2704 printf("Mode Sense Data="); 2705 for (idx = 0; idx < mode_buffer_len; idx++) 2706 printf(" 0x%02x", xyz[idx] & 0xff); 2707 printf("\n"); 2708 } 2709 2710 sagetparamsexit: 2711 2712 xpt_release_ccb(ccb); 2713 free(mode_buffer, M_TEMP); 2714 return (error); 2715 } 2716 2717 /* 2718 * The purpose of this function is to set one of four different parameters 2719 * for a tape drive: 2720 * - blocksize 2721 * - density 2722 * - compression / compression algorithm 2723 * - buffering mode 2724 * 2725 * The assumption is that this will be called from saioctl(), and therefore 2726 * from a process context. Thus the waiting malloc calls below. If that 2727 * assumption ever changes, the malloc calls should be changed to be 2728 * NOWAIT mallocs. 2729 * 2730 * Any or all of the four parameters may be set when this function is 2731 * called. It should handle setting more than one parameter at once. 2732 */ 2733 static int 2734 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2735 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2736 u_int32_t sense_flags) 2737 { 2738 struct sa_softc *softc; 2739 u_int32_t current_blocksize; 2740 u_int32_t current_calg; 2741 u_int8_t current_density; 2742 u_int8_t current_speed; 2743 int comp_enabled, comp_supported; 2744 void *mode_buffer; 2745 int mode_buffer_len; 2746 struct scsi_mode_header_6 *mode_hdr; 2747 struct scsi_mode_blk_desc *mode_blk; 2748 sa_comp_t *ccomp, *cpage; 2749 int buff_mode; 2750 union ccb *ccb = NULL; 2751 int error; 2752 2753 softc = (struct sa_softc *)periph->softc; 2754 2755 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2756 2757 /* 2758 * Since it doesn't make sense to set the number of blocks, or 2759 * write protection, we won't try to get the current value. We 2760 * always want to get the blocksize, so we can set it back to the 2761 * proper value. 2762 */ 2763 error = sagetparams(periph, 2764 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2765 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2766 ¤t_speed, &comp_supported, &comp_enabled, 2767 ¤t_calg, ccomp); 2768 2769 if (error != 0) { 2770 free(ccomp, M_TEMP); 2771 return (error); 2772 } 2773 2774 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2775 if (params_to_set & SA_PARAM_COMPRESSION) 2776 mode_buffer_len += sizeof (sa_comp_t); 2777 2778 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2779 2780 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2781 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2782 2783 ccb = cam_periph_getccb(periph, 1); 2784 2785 retry: 2786 2787 if (params_to_set & SA_PARAM_COMPRESSION) { 2788 if (mode_blk) { 2789 cpage = (sa_comp_t *)&mode_blk[1]; 2790 } else { 2791 cpage = (sa_comp_t *)&mode_hdr[1]; 2792 } 2793 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2794 cpage->hdr.pagecode &= ~0x80; 2795 } else 2796 cpage = NULL; 2797 2798 /* 2799 * If the caller wants us to set the blocksize, use the one they 2800 * pass in. Otherwise, use the blocksize we got back from the 2801 * mode select above. 2802 */ 2803 if (mode_blk) { 2804 if (params_to_set & SA_PARAM_BLOCKSIZE) 2805 scsi_ulto3b(blocksize, mode_blk->blklen); 2806 else 2807 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2808 2809 /* 2810 * Set density if requested, else preserve old density. 2811 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2812 * devices, else density we've latched up in our softc. 2813 */ 2814 if (params_to_set & SA_PARAM_DENSITY) { 2815 mode_blk->density = density; 2816 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2817 mode_blk->density = SCSI_SAME_DENSITY; 2818 } else { 2819 mode_blk->density = softc->media_density; 2820 } 2821 } 2822 2823 /* 2824 * For mode selects, these two fields must be zero. 2825 */ 2826 mode_hdr->data_length = 0; 2827 mode_hdr->medium_type = 0; 2828 2829 /* set the speed to the current value */ 2830 mode_hdr->dev_spec = current_speed; 2831 2832 /* if set, set single-initiator buffering mode */ 2833 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2834 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2835 } 2836 2837 if (mode_blk) 2838 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2839 else 2840 mode_hdr->blk_desc_len = 0; 2841 2842 /* 2843 * First, if the user wants us to set the compression algorithm or 2844 * just turn compression on, check to make sure that this drive 2845 * supports compression. 2846 */ 2847 if (params_to_set & SA_PARAM_COMPRESSION) { 2848 /* 2849 * If the compression algorithm is 0, disable compression. 2850 * If the compression algorithm is non-zero, enable 2851 * compression and set the compression type to the 2852 * specified compression algorithm, unless the algorithm is 2853 * MT_COMP_ENABLE. In that case, we look at the 2854 * compression algorithm that is currently set and if it is 2855 * non-zero, we leave it as-is. If it is zero, and we have 2856 * saved a compression algorithm from a time when 2857 * compression was enabled before, set the compression to 2858 * the saved value. 2859 */ 2860 switch (ccomp->hdr.pagecode & ~0x80) { 2861 case SA_DEVICE_CONFIGURATION_PAGE: 2862 { 2863 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2864 if (calg == 0) { 2865 dcp->sel_comp_alg = SA_COMP_NONE; 2866 break; 2867 } 2868 if (calg != MT_COMP_ENABLE) { 2869 dcp->sel_comp_alg = calg; 2870 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2871 softc->saved_comp_algorithm != 0) { 2872 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2873 } 2874 break; 2875 } 2876 case SA_DATA_COMPRESSION_PAGE: 2877 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2878 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2879 if (calg == 0) { 2880 /* 2881 * Disable compression, but leave the 2882 * decompression and the capability bit 2883 * alone. 2884 */ 2885 dcp->dce_and_dcc = SA_DCP_DCC; 2886 dcp->dde_and_red |= SA_DCP_DDE; 2887 break; 2888 } 2889 /* enable compression && decompression */ 2890 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2891 dcp->dde_and_red |= SA_DCP_DDE; 2892 /* 2893 * If there, use compression algorithm from caller. 2894 * Otherwise, if there's a saved compression algorithm 2895 * and there is no current algorithm, use the saved 2896 * algorithm. Else parrot back what we got and hope 2897 * for the best. 2898 */ 2899 if (calg != MT_COMP_ENABLE) { 2900 scsi_ulto4b(calg, dcp->comp_algorithm); 2901 scsi_ulto4b(calg, dcp->decomp_algorithm); 2902 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2903 softc->saved_comp_algorithm != 0) { 2904 scsi_ulto4b(softc->saved_comp_algorithm, 2905 dcp->comp_algorithm); 2906 scsi_ulto4b(softc->saved_comp_algorithm, 2907 dcp->decomp_algorithm); 2908 } 2909 break; 2910 } 2911 /* 2912 * Compression does not appear to be supported- 2913 * at least via the DATA COMPRESSION page. It 2914 * would be too much to ask us to believe that 2915 * the page itself is supported, but incorrectly 2916 * reports an ability to manipulate data compression, 2917 * so we'll assume that this device doesn't support 2918 * compression. We can just fall through for that. 2919 */ 2920 /* FALLTHROUGH */ 2921 default: 2922 /* 2923 * The drive doesn't seem to support compression, 2924 * so turn off the set compression bit. 2925 */ 2926 params_to_set &= ~SA_PARAM_COMPRESSION; 2927 xpt_print(periph->path, 2928 "device does not seem to support compression\n"); 2929 2930 /* 2931 * If that was the only thing the user wanted us to set, 2932 * clean up allocated resources and return with 2933 * 'operation not supported'. 2934 */ 2935 if (params_to_set == SA_PARAM_NONE) { 2936 free(mode_buffer, M_TEMP); 2937 xpt_release_ccb(ccb); 2938 return (ENODEV); 2939 } 2940 2941 /* 2942 * That wasn't the only thing the user wanted us to set. 2943 * So, decrease the stated mode buffer length by the 2944 * size of the compression mode page. 2945 */ 2946 mode_buffer_len -= sizeof(sa_comp_t); 2947 } 2948 } 2949 2950 /* It is safe to retry this operation */ 2951 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2952 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2953 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2954 2955 error = cam_periph_runccb(ccb, saerror, 0, 2956 sense_flags, softc->device_stats); 2957 QFRLS(ccb); 2958 2959 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2960 int idx; 2961 char *xyz = mode_buffer; 2962 xpt_print_path(periph->path); 2963 printf("Err%d, Mode Select Data=", error); 2964 for (idx = 0; idx < mode_buffer_len; idx++) 2965 printf(" 0x%02x", xyz[idx] & 0xff); 2966 printf("\n"); 2967 } 2968 2969 2970 if (error) { 2971 /* 2972 * If we can, try without setting density/blocksize. 2973 */ 2974 if (mode_blk) { 2975 if ((params_to_set & 2976 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2977 mode_blk = NULL; 2978 goto retry; 2979 } 2980 } else { 2981 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2982 cpage = (sa_comp_t *)&mode_blk[1]; 2983 } 2984 2985 /* 2986 * If we were setting the blocksize, and that failed, we 2987 * want to set it to its original value. If we weren't 2988 * setting the blocksize, we don't want to change it. 2989 */ 2990 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2991 2992 /* 2993 * Set density if requested, else preserve old density. 2994 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2995 * devices, else density we've latched up in our softc. 2996 */ 2997 if (params_to_set & SA_PARAM_DENSITY) { 2998 mode_blk->density = current_density; 2999 } else if (softc->scsi_rev > SCSI_REV_CCS) { 3000 mode_blk->density = SCSI_SAME_DENSITY; 3001 } else { 3002 mode_blk->density = softc->media_density; 3003 } 3004 3005 if (params_to_set & SA_PARAM_COMPRESSION) 3006 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3007 3008 /* 3009 * The retry count is the only CCB field that might have been 3010 * changed that we care about, so reset it back to 1. 3011 */ 3012 ccb->ccb_h.retry_count = 1; 3013 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3014 softc->device_stats); 3015 QFRLS(ccb); 3016 } 3017 3018 xpt_release_ccb(ccb); 3019 3020 if (ccomp != NULL) 3021 free(ccomp, M_TEMP); 3022 3023 if (params_to_set & SA_PARAM_COMPRESSION) { 3024 if (error) { 3025 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3026 /* 3027 * Even if we get an error setting compression, 3028 * do not say that we don't support it. We could 3029 * have been wrong, or it may be media specific. 3030 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3031 */ 3032 softc->saved_comp_algorithm = softc->comp_algorithm; 3033 softc->comp_algorithm = 0; 3034 } else { 3035 softc->flags |= SA_FLAG_COMP_ENABLED; 3036 softc->comp_algorithm = calg; 3037 } 3038 } 3039 3040 free(mode_buffer, M_TEMP); 3041 return (error); 3042 } 3043 3044 static void 3045 saprevent(struct cam_periph *periph, int action) 3046 { 3047 struct sa_softc *softc; 3048 union ccb *ccb; 3049 int error, sf; 3050 3051 softc = (struct sa_softc *)periph->softc; 3052 3053 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3054 return; 3055 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3056 return; 3057 3058 /* 3059 * We can be quiet about illegal requests. 3060 */ 3061 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3062 sf = 0; 3063 } else 3064 sf = SF_QUIET_IR; 3065 3066 ccb = cam_periph_getccb(periph, 1); 3067 3068 /* It is safe to retry this operation */ 3069 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3070 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3071 3072 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3073 QFRLS(ccb); 3074 if (error == 0) { 3075 if (action == PR_ALLOW) 3076 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3077 else 3078 softc->flags |= SA_FLAG_TAPE_LOCKED; 3079 } 3080 3081 xpt_release_ccb(ccb); 3082 } 3083 3084 static int 3085 sarewind(struct cam_periph *periph) 3086 { 3087 union ccb *ccb; 3088 struct sa_softc *softc; 3089 int error; 3090 3091 softc = (struct sa_softc *)periph->softc; 3092 3093 ccb = cam_periph_getccb(periph, 1); 3094 3095 /* It is safe to retry this operation */ 3096 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3097 SSD_FULL_SIZE, REWIND_TIMEOUT); 3098 3099 softc->dsreg = MTIO_DSREG_REW; 3100 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3101 softc->dsreg = MTIO_DSREG_REST; 3102 3103 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3104 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3105 3106 xpt_release_ccb(ccb); 3107 if (error == 0) 3108 softc->fileno = softc->blkno = (daddr_t) 0; 3109 else 3110 softc->fileno = softc->blkno = (daddr_t) -1; 3111 return (error); 3112 } 3113 3114 static int 3115 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3116 { 3117 union ccb *ccb; 3118 struct sa_softc *softc; 3119 int error; 3120 3121 softc = (struct sa_softc *)periph->softc; 3122 3123 ccb = cam_periph_getccb(periph, 1); 3124 3125 /* This cannot be retried */ 3126 3127 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3128 SSD_FULL_SIZE, SPACE_TIMEOUT); 3129 3130 /* 3131 * Clear residual because we will be using it. 3132 */ 3133 softc->last_ctl_resid = 0; 3134 3135 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3136 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3137 softc->dsreg = MTIO_DSREG_REST; 3138 3139 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3140 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3141 3142 xpt_release_ccb(ccb); 3143 3144 /* 3145 * If a spacing operation has failed, we need to invalidate 3146 * this mount. 3147 * 3148 * If the spacing operation was setmarks or to end of recorded data, 3149 * we no longer know our relative position. 3150 * 3151 * If the spacing operations was spacing files in reverse, we 3152 * take account of the residual, but still check against less 3153 * than zero- if we've gone negative, we must have hit BOT. 3154 * 3155 * If the spacing operations was spacing records in reverse and 3156 * we have a residual, we've either hit BOT or hit a filemark. 3157 * In the former case, we know our new record number (0). In 3158 * the latter case, we have absolutely no idea what the real 3159 * record number is- we've stopped between the end of the last 3160 * record in the previous file and the filemark that stopped 3161 * our spacing backwards. 3162 */ 3163 if (error) { 3164 softc->fileno = softc->blkno = (daddr_t) -1; 3165 } else if (code == SS_SETMARKS || code == SS_EOD) { 3166 softc->fileno = softc->blkno = (daddr_t) -1; 3167 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3168 softc->fileno += (count - softc->last_ctl_resid); 3169 if (softc->fileno < 0) /* we must of hit BOT */ 3170 softc->fileno = 0; 3171 softc->blkno = 0; 3172 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3173 softc->blkno += (count - softc->last_ctl_resid); 3174 if (count < 0) { 3175 if (softc->last_ctl_resid || softc->blkno < 0) { 3176 if (softc->fileno == 0) { 3177 softc->blkno = 0; 3178 } else { 3179 softc->blkno = (daddr_t) -1; 3180 } 3181 } 3182 } 3183 } 3184 return (error); 3185 } 3186 3187 static int 3188 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3189 { 3190 union ccb *ccb; 3191 struct sa_softc *softc; 3192 int error, nwm = 0; 3193 3194 softc = (struct sa_softc *)periph->softc; 3195 if (softc->open_rdonly) 3196 return (EBADF); 3197 3198 ccb = cam_periph_getccb(periph, 1); 3199 /* 3200 * Clear residual because we will be using it. 3201 */ 3202 softc->last_ctl_resid = 0; 3203 3204 softc->dsreg = MTIO_DSREG_FMK; 3205 /* this *must* not be retried */ 3206 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3207 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3208 softc->dsreg = MTIO_DSREG_REST; 3209 3210 3211 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3212 3213 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3214 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3215 3216 if (error == 0 && nmarks) { 3217 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3218 nwm = nmarks - softc->last_ctl_resid; 3219 softc->filemarks += nwm; 3220 } 3221 3222 xpt_release_ccb(ccb); 3223 3224 /* 3225 * Update relative positions (if we're doing that). 3226 */ 3227 if (error) { 3228 softc->fileno = softc->blkno = (daddr_t) -1; 3229 } else if (softc->fileno != (daddr_t) -1) { 3230 softc->fileno += nwm; 3231 softc->blkno = 0; 3232 } 3233 return (error); 3234 } 3235 3236 static int 3237 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3238 { 3239 struct scsi_tape_position_data loc; 3240 union ccb *ccb; 3241 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3242 int error; 3243 3244 /* 3245 * We try and flush any buffered writes here if we were writing 3246 * and we're trying to get hardware block position. It eats 3247 * up performance substantially, but I'm wary of drive firmware. 3248 * 3249 * I think that *logical* block position is probably okay- 3250 * but hardware block position might have to wait for data 3251 * to hit media to be valid. Caveat Emptor. 3252 */ 3253 3254 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3255 error = sawritefilemarks(periph, 0, 0); 3256 if (error && error != EACCES) 3257 return (error); 3258 } 3259 3260 ccb = cam_periph_getccb(periph, 1); 3261 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3262 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3263 softc->dsreg = MTIO_DSREG_RBSY; 3264 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3265 softc->dsreg = MTIO_DSREG_REST; 3266 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3267 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3268 3269 if (error == 0) { 3270 if (loc.flags & SA_RPOS_UNCERTAIN) { 3271 error = EINVAL; /* nothing is certain */ 3272 } else { 3273 *blkptr = scsi_4btoul(loc.firstblk); 3274 } 3275 } 3276 3277 xpt_release_ccb(ccb); 3278 return (error); 3279 } 3280 3281 static int 3282 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3283 { 3284 union ccb *ccb; 3285 struct sa_softc *softc; 3286 int error; 3287 3288 /* 3289 * We used to try and flush any buffered writes here. 3290 * Now we push this onto user applications to either 3291 * flush the pending writes themselves (via a zero count 3292 * WRITE FILEMARKS command) or they can trust their tape 3293 * drive to do this correctly for them. 3294 */ 3295 3296 softc = (struct sa_softc *)periph->softc; 3297 ccb = cam_periph_getccb(periph, 1); 3298 3299 3300 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3301 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3302 3303 3304 softc->dsreg = MTIO_DSREG_POS; 3305 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3306 softc->dsreg = MTIO_DSREG_REST; 3307 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3308 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3309 xpt_release_ccb(ccb); 3310 /* 3311 * Note relative file && block number position as now unknown. 3312 */ 3313 softc->fileno = softc->blkno = (daddr_t) -1; 3314 return (error); 3315 } 3316 3317 static int 3318 saretension(struct cam_periph *periph) 3319 { 3320 union ccb *ccb; 3321 struct sa_softc *softc; 3322 int error; 3323 3324 softc = (struct sa_softc *)periph->softc; 3325 3326 ccb = cam_periph_getccb(periph, 1); 3327 3328 /* It is safe to retry this operation */ 3329 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3330 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3331 3332 softc->dsreg = MTIO_DSREG_TEN; 3333 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3334 softc->dsreg = MTIO_DSREG_REST; 3335 3336 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3337 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3338 xpt_release_ccb(ccb); 3339 if (error == 0) 3340 softc->fileno = softc->blkno = (daddr_t) 0; 3341 else 3342 softc->fileno = softc->blkno = (daddr_t) -1; 3343 return (error); 3344 } 3345 3346 static int 3347 sareservereleaseunit(struct cam_periph *periph, int reserve) 3348 { 3349 union ccb *ccb; 3350 struct sa_softc *softc; 3351 int error; 3352 3353 softc = (struct sa_softc *)periph->softc; 3354 ccb = cam_periph_getccb(periph, 1); 3355 3356 /* It is safe to retry this operation */ 3357 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3358 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3359 softc->dsreg = MTIO_DSREG_RBSY; 3360 error = cam_periph_runccb(ccb, saerror, 0, 3361 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3362 softc->dsreg = MTIO_DSREG_REST; 3363 QFRLS(ccb); 3364 xpt_release_ccb(ccb); 3365 3366 /* 3367 * If the error was Illegal Request, then the device doesn't support 3368 * RESERVE/RELEASE. This is not an error. 3369 */ 3370 if (error == EINVAL) { 3371 error = 0; 3372 } 3373 3374 return (error); 3375 } 3376 3377 static int 3378 saloadunload(struct cam_periph *periph, int load) 3379 { 3380 union ccb *ccb; 3381 struct sa_softc *softc; 3382 int error; 3383 3384 softc = (struct sa_softc *)periph->softc; 3385 3386 ccb = cam_periph_getccb(periph, 1); 3387 3388 /* It is safe to retry this operation */ 3389 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3390 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3391 3392 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3393 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3394 softc->dsreg = MTIO_DSREG_REST; 3395 QFRLS(ccb); 3396 xpt_release_ccb(ccb); 3397 3398 if (error || load == 0) 3399 softc->fileno = softc->blkno = (daddr_t) -1; 3400 else if (error == 0) 3401 softc->fileno = softc->blkno = (daddr_t) 0; 3402 return (error); 3403 } 3404 3405 static int 3406 saerase(struct cam_periph *periph, int longerase) 3407 { 3408 3409 union ccb *ccb; 3410 struct sa_softc *softc; 3411 int error; 3412 3413 softc = (struct sa_softc *)periph->softc; 3414 if (softc->open_rdonly) 3415 return (EBADF); 3416 3417 ccb = cam_periph_getccb(periph, 1); 3418 3419 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3420 SSD_FULL_SIZE, ERASE_TIMEOUT); 3421 3422 softc->dsreg = MTIO_DSREG_ZER; 3423 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3424 softc->dsreg = MTIO_DSREG_REST; 3425 3426 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3427 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3428 xpt_release_ccb(ccb); 3429 return (error); 3430 } 3431 3432 #endif /* _KERNEL */ 3433 3434 /* 3435 * Read tape block limits command. 3436 */ 3437 void 3438 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3439 void (*cbfcnp)(struct cam_periph *, union ccb *), 3440 u_int8_t tag_action, 3441 struct scsi_read_block_limits_data *rlimit_buf, 3442 u_int8_t sense_len, u_int32_t timeout) 3443 { 3444 struct scsi_read_block_limits *scsi_cmd; 3445 3446 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3447 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3448 sizeof(*scsi_cmd), timeout); 3449 3450 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3451 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3452 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3453 } 3454 3455 void 3456 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3457 void (*cbfcnp)(struct cam_periph *, union ccb *), 3458 u_int8_t tag_action, int readop, int sli, 3459 int fixed, u_int32_t length, u_int8_t *data_ptr, 3460 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3461 { 3462 struct scsi_sa_rw *scsi_cmd; 3463 3464 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3465 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3466 scsi_cmd->sli_fixed = 0; 3467 if (sli && readop) 3468 scsi_cmd->sli_fixed |= SAR_SLI; 3469 if (fixed) 3470 scsi_cmd->sli_fixed |= SARW_FIXED; 3471 scsi_ulto3b(length, scsi_cmd->length); 3472 scsi_cmd->control = 0; 3473 3474 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3475 tag_action, data_ptr, dxfer_len, sense_len, 3476 sizeof(*scsi_cmd), timeout); 3477 } 3478 3479 void 3480 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3481 void (*cbfcnp)(struct cam_periph *, union ccb *), 3482 u_int8_t tag_action, int immediate, int eot, 3483 int reten, int load, u_int8_t sense_len, 3484 u_int32_t timeout) 3485 { 3486 struct scsi_load_unload *scsi_cmd; 3487 3488 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3489 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3490 scsi_cmd->opcode = LOAD_UNLOAD; 3491 if (immediate) 3492 scsi_cmd->immediate = SLU_IMMED; 3493 if (eot) 3494 scsi_cmd->eot_reten_load |= SLU_EOT; 3495 if (reten) 3496 scsi_cmd->eot_reten_load |= SLU_RETEN; 3497 if (load) 3498 scsi_cmd->eot_reten_load |= SLU_LOAD; 3499 3500 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3501 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3502 } 3503 3504 void 3505 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3506 void (*cbfcnp)(struct cam_periph *, union ccb *), 3507 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3508 u_int32_t timeout) 3509 { 3510 struct scsi_rewind *scsi_cmd; 3511 3512 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3513 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3514 scsi_cmd->opcode = REWIND; 3515 if (immediate) 3516 scsi_cmd->immediate = SREW_IMMED; 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_space(struct ccb_scsiio *csio, u_int32_t retries, 3524 void (*cbfcnp)(struct cam_periph *, union ccb *), 3525 u_int8_t tag_action, scsi_space_code code, 3526 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3527 { 3528 struct scsi_space *scsi_cmd; 3529 3530 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3531 scsi_cmd->opcode = SPACE; 3532 scsi_cmd->code = code; 3533 scsi_ulto3b(count, scsi_cmd->count); 3534 scsi_cmd->control = 0; 3535 3536 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3537 0, sense_len, sizeof(*scsi_cmd), timeout); 3538 } 3539 3540 void 3541 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3542 void (*cbfcnp)(struct cam_periph *, union ccb *), 3543 u_int8_t tag_action, int immediate, int setmark, 3544 u_int32_t num_marks, u_int8_t sense_len, 3545 u_int32_t timeout) 3546 { 3547 struct scsi_write_filemarks *scsi_cmd; 3548 3549 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3550 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3551 scsi_cmd->opcode = WRITE_FILEMARKS; 3552 if (immediate) 3553 scsi_cmd->byte2 |= SWFMRK_IMMED; 3554 if (setmark) 3555 scsi_cmd->byte2 |= SWFMRK_WSMK; 3556 3557 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3558 3559 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3560 0, sense_len, sizeof(*scsi_cmd), timeout); 3561 } 3562 3563 /* 3564 * The reserve and release unit commands differ only by their opcodes. 3565 */ 3566 void 3567 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3568 void (*cbfcnp)(struct cam_periph *, union ccb *), 3569 u_int8_t tag_action, int third_party, 3570 int third_party_id, u_int8_t sense_len, 3571 u_int32_t timeout, int reserve) 3572 { 3573 struct scsi_reserve_release_unit *scsi_cmd; 3574 3575 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3576 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3577 3578 if (reserve) 3579 scsi_cmd->opcode = RESERVE_UNIT; 3580 else 3581 scsi_cmd->opcode = RELEASE_UNIT; 3582 3583 if (third_party) { 3584 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3585 scsi_cmd->lun_thirdparty |= 3586 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3587 } 3588 3589 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3590 0, sense_len, sizeof(*scsi_cmd), timeout); 3591 } 3592 3593 void 3594 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3595 void (*cbfcnp)(struct cam_periph *, union ccb *), 3596 u_int8_t tag_action, int immediate, int long_erase, 3597 u_int8_t sense_len, u_int32_t timeout) 3598 { 3599 struct scsi_erase *scsi_cmd; 3600 3601 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3602 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3603 3604 scsi_cmd->opcode = ERASE; 3605 3606 if (immediate) 3607 scsi_cmd->lun_imm_long |= SE_IMMED; 3608 3609 if (long_erase) 3610 scsi_cmd->lun_imm_long |= SE_LONG; 3611 3612 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3613 0, sense_len, sizeof(*scsi_cmd), timeout); 3614 } 3615 3616 /* 3617 * Read Tape Position command. 3618 */ 3619 void 3620 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3621 void (*cbfcnp)(struct cam_periph *, union ccb *), 3622 u_int8_t tag_action, int hardsoft, 3623 struct scsi_tape_position_data *sbp, 3624 u_int8_t sense_len, u_int32_t timeout) 3625 { 3626 struct scsi_tape_read_position *scmd; 3627 3628 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3629 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3630 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3631 bzero(scmd, sizeof(*scmd)); 3632 scmd->opcode = READ_POSITION; 3633 scmd->byte1 = hardsoft; 3634 } 3635 3636 /* 3637 * Set Tape Position command. 3638 */ 3639 void 3640 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3641 void (*cbfcnp)(struct cam_periph *, union ccb *), 3642 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3643 u_int8_t sense_len, u_int32_t timeout) 3644 { 3645 struct scsi_tape_locate *scmd; 3646 3647 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3648 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3649 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3650 bzero(scmd, sizeof(*scmd)); 3651 scmd->opcode = LOCATE; 3652 if (hardsoft) 3653 scmd->byte1 |= SA_SPOS_BT; 3654 scsi_ulto4b(blkno, scmd->blkaddr); 3655 } 3656