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 #define SAMODE(z) (dev2unit(z) & 0x3) 177 #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) 178 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 179 180 #define SA_NOT_CTLDEV 0 181 #define SA_CTLDEV 1 182 183 #define SA_ATYPE_R 0 184 #define SA_ATYPE_NR 1 185 #define SA_ATYPE_ER 2 186 187 #define SAMINOR(ctl, mode, access) \ 188 ((ctl << 4) | (mode << 2) | (access & 0x3)) 189 190 #define SA_NUM_MODES 4 191 struct sa_devs { 192 struct cdev *ctl_dev; 193 struct sa_mode_devs { 194 struct cdev *r_dev; 195 struct cdev *nr_dev; 196 struct cdev *er_dev; 197 } mode_devs[SA_NUM_MODES]; 198 }; 199 200 struct sa_softc { 201 sa_state state; 202 sa_flags flags; 203 sa_quirks quirks; 204 struct bio_queue_head bio_queue; 205 int queue_count; 206 struct devstat *device_stats; 207 struct sa_devs devs; 208 int blk_gran; 209 int blk_mask; 210 int blk_shift; 211 u_int32_t max_blk; 212 u_int32_t min_blk; 213 u_int32_t comp_algorithm; 214 u_int32_t saved_comp_algorithm; 215 u_int32_t media_blksize; 216 u_int32_t last_media_blksize; 217 u_int32_t media_numblks; 218 u_int8_t media_density; 219 u_int8_t speed; 220 u_int8_t scsi_rev; 221 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 222 int buffer_mode; 223 int filemarks; 224 union ccb saved_ccb; 225 int last_resid_was_io; 226 227 /* 228 * Relative to BOT Location. 229 */ 230 daddr_t fileno; 231 daddr_t blkno; 232 233 /* 234 * Latched Error Info 235 */ 236 struct { 237 struct scsi_sense_data _last_io_sense; 238 u_int32_t _last_io_resid; 239 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 240 struct scsi_sense_data _last_ctl_sense; 241 u_int32_t _last_ctl_resid; 242 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 243 #define last_io_sense errinfo._last_io_sense 244 #define last_io_resid errinfo._last_io_resid 245 #define last_io_cdb errinfo._last_io_cdb 246 #define last_ctl_sense errinfo._last_ctl_sense 247 #define last_ctl_resid errinfo._last_ctl_resid 248 #define last_ctl_cdb errinfo._last_ctl_cdb 249 } errinfo; 250 /* 251 * Misc other flags/state 252 */ 253 u_int32_t 254 : 29, 255 open_rdonly : 1, /* open read-only */ 256 open_pending_mount : 1, /* open pending mount */ 257 ctrl_mode : 1; /* control device open */ 258 }; 259 260 struct sa_quirk_entry { 261 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 262 sa_quirks quirks; /* specific quirk type */ 263 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 264 }; 265 266 static struct sa_quirk_entry sa_quirk_table[] = 267 { 268 { 269 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 270 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 271 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 272 }, 273 { 274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 275 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 276 }, 277 { 278 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 279 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 280 }, 281 { 282 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 283 "Python*", "*"}, SA_QUIRK_NODREAD, 0 284 }, 285 { 286 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 287 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 288 }, 289 { 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 291 "VIPER 2525 25462", "-011"}, 292 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 297 }, 298 #if 0 299 { 300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 301 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 302 }, 303 #endif 304 { 305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 306 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 307 }, 308 { 309 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 310 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 311 }, 312 { 313 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 314 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 315 }, 316 { 317 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 318 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 319 }, 320 { 321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 322 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 323 }, 324 { 325 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 326 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 327 }, 328 { /* jreynold@primenet.com */ 329 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 330 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 331 }, 332 { /* mike@sentex.net */ 333 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 334 "STT20000*", "*"}, SA_QUIRK_1FM, 0 335 }, 336 { 337 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 338 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 339 }, 340 { 341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 342 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 343 }, 344 { 345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 346 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 347 }, 348 { 349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 350 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 351 }, 352 { 353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 354 " SLR*", "*"}, SA_QUIRK_1FM, 0 355 }, 356 { 357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 358 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 359 }, 360 { 361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 362 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 363 } 364 }; 365 366 static d_open_t saopen; 367 static d_close_t saclose; 368 static d_strategy_t sastrategy; 369 static d_ioctl_t saioctl; 370 static periph_init_t sainit; 371 static periph_ctor_t saregister; 372 static periph_oninv_t saoninvalidate; 373 static periph_dtor_t sacleanup; 374 static periph_start_t sastart; 375 static void saasync(void *callback_arg, u_int32_t code, 376 struct cam_path *path, void *arg); 377 static void sadone(struct cam_periph *periph, 378 union ccb *start_ccb); 379 static int saerror(union ccb *ccb, u_int32_t cam_flags, 380 u_int32_t sense_flags); 381 static int samarkswanted(struct cam_periph *); 382 static int sacheckeod(struct cam_periph *periph); 383 static int sagetparams(struct cam_periph *periph, 384 sa_params params_to_get, 385 u_int32_t *blocksize, u_int8_t *density, 386 u_int32_t *numblocks, int *buff_mode, 387 u_int8_t *write_protect, u_int8_t *speed, 388 int *comp_supported, int *comp_enabled, 389 u_int32_t *comp_algorithm, 390 sa_comp_t *comp_page); 391 static int sasetparams(struct cam_periph *periph, 392 sa_params params_to_set, 393 u_int32_t blocksize, u_int8_t density, 394 u_int32_t comp_algorithm, 395 u_int32_t sense_flags); 396 static void saprevent(struct cam_periph *periph, int action); 397 static int sarewind(struct cam_periph *periph); 398 static int saspace(struct cam_periph *periph, int count, 399 scsi_space_code code); 400 static int samount(struct cam_periph *, int, struct cdev *); 401 static int saretension(struct cam_periph *periph); 402 static int sareservereleaseunit(struct cam_periph *periph, 403 int reserve); 404 static int saloadunload(struct cam_periph *periph, int load); 405 static int saerase(struct cam_periph *periph, int longerase); 406 static int sawritefilemarks(struct cam_periph *periph, 407 int nmarks, int setmarks); 408 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 409 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 410 411 412 static struct periph_driver sadriver = 413 { 414 sainit, "sa", 415 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 416 }; 417 418 PERIPHDRIVER_DECLARE(sa, sadriver); 419 420 /* For 2.2-stable support */ 421 #ifndef D_TAPE 422 #define D_TAPE 0 423 #endif 424 425 426 static struct cdevsw sa_cdevsw = { 427 .d_version = D_VERSION, 428 .d_open = saopen, 429 .d_close = saclose, 430 .d_read = physread, 431 .d_write = physwrite, 432 .d_ioctl = saioctl, 433 .d_strategy = sastrategy, 434 .d_name = "sa", 435 .d_flags = D_TAPE | D_NEEDGIANT, 436 }; 437 438 static int 439 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 440 { 441 struct cam_periph *periph; 442 struct sa_softc *softc; 443 int error; 444 445 periph = (struct cam_periph *)dev->si_drv1; 446 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 447 return (ENXIO); 448 } 449 450 cam_periph_lock(periph); 451 452 softc = (struct sa_softc *)periph->softc; 453 454 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 455 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 456 457 if (SA_IS_CTRL(dev)) { 458 softc->ctrl_mode = 1; 459 cam_periph_unlock(periph); 460 return (0); 461 } 462 463 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 464 cam_periph_unlock(periph); 465 cam_periph_release(periph); 466 return (error); 467 } 468 469 if (softc->flags & SA_FLAG_OPEN) { 470 error = EBUSY; 471 } else if (softc->flags & SA_FLAG_INVALID) { 472 error = ENXIO; 473 } else { 474 /* 475 * Preserve whether this is a read_only open. 476 */ 477 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 478 479 /* 480 * The function samount ensures media is loaded and ready. 481 * It also does a device RESERVE if the tape isn't yet mounted. 482 * 483 * If the mount fails and this was a non-blocking open, 484 * make this a 'open_pending_mount' action. 485 */ 486 error = samount(periph, flags, dev); 487 if (error && (flags & O_NONBLOCK)) { 488 softc->flags |= SA_FLAG_OPEN; 489 softc->open_pending_mount = 1; 490 cam_periph_unhold(periph); 491 cam_periph_unlock(periph); 492 return (0); 493 } 494 } 495 496 if (error) { 497 cam_periph_unhold(periph); 498 cam_periph_unlock(periph); 499 cam_periph_release(periph); 500 return (error); 501 } 502 503 saprevent(periph, PR_PREVENT); 504 softc->flags |= SA_FLAG_OPEN; 505 506 cam_periph_unhold(periph); 507 cam_periph_unlock(periph); 508 return (error); 509 } 510 511 static int 512 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 513 { 514 struct cam_periph *periph; 515 struct sa_softc *softc; 516 int mode, error, writing, tmp; 517 int closedbits = SA_FLAG_OPEN; 518 519 mode = SAMODE(dev); 520 periph = (struct cam_periph *)dev->si_drv1; 521 if (periph == NULL) 522 return (ENXIO); 523 524 cam_periph_lock(periph); 525 526 softc = (struct sa_softc *)periph->softc; 527 528 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 529 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 530 531 532 softc->open_rdonly = 0; 533 if (SA_IS_CTRL(dev)) { 534 softc->ctrl_mode = 0; 535 cam_periph_unlock(periph); 536 cam_periph_release(periph); 537 return (0); 538 } 539 540 if (softc->open_pending_mount) { 541 softc->flags &= ~SA_FLAG_OPEN; 542 softc->open_pending_mount = 0; 543 cam_periph_unlock(periph); 544 cam_periph_release(periph); 545 return (0); 546 } 547 548 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 549 cam_periph_unlock(periph); 550 return (error); 551 } 552 553 /* 554 * Were we writing the tape? 555 */ 556 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 557 558 /* 559 * See whether or not we need to write filemarks. If this 560 * fails, we probably have to assume we've lost tape 561 * position. 562 */ 563 error = sacheckeod(periph); 564 if (error) { 565 xpt_print(periph->path, 566 "failed to write terminating filemark(s)\n"); 567 softc->flags |= SA_FLAG_TAPE_FROZEN; 568 } 569 570 /* 571 * Whatever we end up doing, allow users to eject tapes from here on. 572 */ 573 saprevent(periph, PR_ALLOW); 574 575 /* 576 * Decide how to end... 577 */ 578 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 579 closedbits |= SA_FLAG_TAPE_FROZEN; 580 } else switch (mode) { 581 case SA_MODE_OFFLINE: 582 /* 583 * An 'offline' close is an unconditional release of 584 * frozen && mount conditions, irrespective of whether 585 * these operations succeeded. The reason for this is 586 * to allow at least some kind of programmatic way 587 * around our state getting all fouled up. If somebody 588 * issues an 'offline' command, that will be allowed 589 * to clear state. 590 */ 591 (void) sarewind(periph); 592 (void) saloadunload(periph, FALSE); 593 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 594 break; 595 case SA_MODE_REWIND: 596 /* 597 * If the rewind fails, return an error- if anyone cares, 598 * but not overwriting any previous error. 599 * 600 * We don't clear the notion of mounted here, but we do 601 * clear the notion of frozen if we successfully rewound. 602 */ 603 tmp = sarewind(periph); 604 if (tmp) { 605 if (error != 0) 606 error = tmp; 607 } else { 608 closedbits |= SA_FLAG_TAPE_FROZEN; 609 } 610 break; 611 case SA_MODE_NOREWIND: 612 /* 613 * If we're not rewinding/unloading the tape, find out 614 * whether we need to back up over one of two filemarks 615 * we wrote (if we wrote two filemarks) so that appends 616 * from this point on will be sane. 617 */ 618 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 619 tmp = saspace(periph, -1, SS_FILEMARKS); 620 if (tmp) { 621 xpt_print(periph->path, "unable to backspace " 622 "over one of double filemarks at end of " 623 "tape\n"); 624 xpt_print(periph->path, "it is possible that " 625 "this device needs a SA_QUIRK_1FM quirk set" 626 "for it\n"); 627 softc->flags |= SA_FLAG_TAPE_FROZEN; 628 } 629 } 630 break; 631 default: 632 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 633 /* NOTREACHED */ 634 break; 635 } 636 637 /* 638 * We wish to note here that there are no more filemarks to be written. 639 */ 640 softc->filemarks = 0; 641 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 642 643 /* 644 * And we are no longer open for business. 645 */ 646 softc->flags &= ~closedbits; 647 648 /* 649 * Inform users if tape state if frozen.... 650 */ 651 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 652 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 653 "REWIND or MTEOM command to clear this state.\n"); 654 } 655 656 /* release the device if it is no longer mounted */ 657 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 658 sareservereleaseunit(periph, FALSE); 659 660 cam_periph_unhold(periph); 661 cam_periph_unlock(periph); 662 cam_periph_release(periph); 663 664 return (error); 665 } 666 667 /* 668 * Actually translate the requested transfer into one the physical driver 669 * can understand. The transfer is described by a buf and will include 670 * only one physical transfer. 671 */ 672 static void 673 sastrategy(struct bio *bp) 674 { 675 struct cam_periph *periph; 676 struct sa_softc *softc; 677 678 bp->bio_resid = bp->bio_bcount; 679 if (SA_IS_CTRL(bp->bio_dev)) { 680 biofinish(bp, NULL, EINVAL); 681 return; 682 } 683 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 684 if (periph == NULL) { 685 biofinish(bp, NULL, ENXIO); 686 return; 687 } 688 cam_periph_lock(periph); 689 690 softc = (struct sa_softc *)periph->softc; 691 692 if (softc->flags & SA_FLAG_INVALID) { 693 cam_periph_unlock(periph); 694 biofinish(bp, NULL, ENXIO); 695 return; 696 } 697 698 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 699 cam_periph_unlock(periph); 700 biofinish(bp, NULL, EPERM); 701 return; 702 } 703 704 /* 705 * This should actually never occur as the write(2) 706 * system call traps attempts to write to a read-only 707 * file descriptor. 708 */ 709 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 710 cam_periph_unlock(periph); 711 biofinish(bp, NULL, EBADF); 712 return; 713 } 714 715 if (softc->open_pending_mount) { 716 int error = samount(periph, 0, bp->bio_dev); 717 if (error) { 718 cam_periph_unlock(periph); 719 biofinish(bp, NULL, ENXIO); 720 return; 721 } 722 saprevent(periph, PR_PREVENT); 723 softc->open_pending_mount = 0; 724 } 725 726 727 /* 728 * If it's a null transfer, return immediately 729 */ 730 if (bp->bio_bcount == 0) { 731 cam_periph_unlock(periph); 732 biodone(bp); 733 return; 734 } 735 736 /* valid request? */ 737 if (softc->flags & SA_FLAG_FIXED) { 738 /* 739 * Fixed block device. The byte count must 740 * be a multiple of our block size. 741 */ 742 if (((softc->blk_mask != ~0) && 743 ((bp->bio_bcount & softc->blk_mask) != 0)) || 744 ((softc->blk_mask == ~0) && 745 ((bp->bio_bcount % softc->min_blk) != 0))) { 746 xpt_print(periph->path, "Invalid request. Fixed block " 747 "device requests must be a multiple of %d bytes\n", 748 softc->min_blk); 749 cam_periph_unlock(periph); 750 biofinish(bp, NULL, EINVAL); 751 return; 752 } 753 } else if ((bp->bio_bcount > softc->max_blk) || 754 (bp->bio_bcount < softc->min_blk) || 755 (bp->bio_bcount & softc->blk_mask) != 0) { 756 757 xpt_print_path(periph->path); 758 printf("Invalid request. Variable block " 759 "device requests must be "); 760 if (softc->blk_mask != 0) { 761 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 762 } 763 printf("between %d and %d bytes\n", softc->min_blk, 764 softc->max_blk); 765 cam_periph_unlock(periph); 766 biofinish(bp, NULL, EINVAL); 767 return; 768 } 769 770 /* 771 * Place it at the end of the queue. 772 */ 773 bioq_insert_tail(&softc->bio_queue, bp); 774 softc->queue_count++; 775 #if 0 776 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 777 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 778 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 779 (bp->bio_cmd == BIO_READ)? "read" : "write")); 780 #endif 781 if (softc->queue_count > 1) { 782 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 783 ("sastrategy: queue count now %d\n", softc->queue_count)); 784 } 785 786 /* 787 * Schedule ourselves for performing the work. 788 */ 789 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 790 cam_periph_unlock(periph); 791 792 return; 793 } 794 795 796 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 797 if (softc->open_pending_mount) { \ 798 error = samount(periph, 0, dev); \ 799 if (error) { \ 800 break; \ 801 } \ 802 saprevent(periph, PR_PREVENT); \ 803 softc->open_pending_mount = 0; \ 804 } 805 806 static int 807 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 808 { 809 struct cam_periph *periph; 810 struct sa_softc *softc; 811 scsi_space_code spaceop; 812 int didlockperiph = 0; 813 int mode; 814 int error = 0; 815 816 mode = SAMODE(dev); 817 error = 0; /* shut up gcc */ 818 spaceop = 0; /* shut up gcc */ 819 820 periph = (struct cam_periph *)dev->si_drv1; 821 if (periph == NULL) 822 return (ENXIO); 823 824 cam_periph_lock(periph); 825 softc = (struct sa_softc *)periph->softc; 826 827 /* 828 * Check for control mode accesses. We allow MTIOCGET and 829 * MTIOCERRSTAT (but need to be the only one open in order 830 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 831 * and MTCOMP (but need to be the only one accessing this 832 * device to run those). 833 */ 834 835 if (SA_IS_CTRL(dev)) { 836 switch (cmd) { 837 case MTIOCGETEOTMODEL: 838 case MTIOCGET: 839 break; 840 case MTIOCERRSTAT: 841 /* 842 * If the periph isn't already locked, lock it 843 * so our MTIOCERRSTAT can reset latched error stats. 844 * 845 * If the periph is already locked, skip it because 846 * we're just getting status and it'll be up to the 847 * other thread that has this device open to do 848 * an MTIOCERRSTAT that would clear latched status. 849 */ 850 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 851 error = cam_periph_hold(periph, PRIBIO|PCATCH); 852 if (error != 0) 853 return (error); 854 didlockperiph = 1; 855 } 856 break; 857 858 case MTIOCTOP: 859 { 860 struct mtop *mt = (struct mtop *) arg; 861 862 /* 863 * Check to make sure it's an OP we can perform 864 * with no media inserted. 865 */ 866 switch (mt->mt_op) { 867 case MTSETBSIZ: 868 case MTSETDNSTY: 869 case MTCOMP: 870 mt = NULL; 871 /* FALLTHROUGH */ 872 default: 873 break; 874 } 875 if (mt != NULL) { 876 break; 877 } 878 /* FALLTHROUGH */ 879 } 880 case MTIOCSETEOTMODEL: 881 /* 882 * We need to acquire the peripheral here rather 883 * than at open time because we are sharing writable 884 * access to data structures. 885 */ 886 error = cam_periph_hold(periph, PRIBIO|PCATCH); 887 if (error != 0) 888 return (error); 889 didlockperiph = 1; 890 break; 891 892 default: 893 return (EINVAL); 894 } 895 } 896 897 /* 898 * Find the device that the user is talking about 899 */ 900 switch (cmd) { 901 case MTIOCGET: 902 { 903 struct mtget *g = (struct mtget *)arg; 904 905 /* 906 * If this isn't the control mode device, actually go out 907 * and ask the drive again what it's set to. 908 */ 909 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 910 u_int8_t write_protect; 911 int comp_enabled, comp_supported; 912 error = sagetparams(periph, SA_PARAM_ALL, 913 &softc->media_blksize, &softc->media_density, 914 &softc->media_numblks, &softc->buffer_mode, 915 &write_protect, &softc->speed, &comp_supported, 916 &comp_enabled, &softc->comp_algorithm, NULL); 917 if (error) 918 break; 919 if (write_protect) 920 softc->flags |= SA_FLAG_TAPE_WP; 921 else 922 softc->flags &= ~SA_FLAG_TAPE_WP; 923 softc->flags &= ~(SA_FLAG_COMP_SUPP| 924 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 925 if (comp_supported) { 926 if (softc->saved_comp_algorithm == 0) 927 softc->saved_comp_algorithm = 928 softc->comp_algorithm; 929 softc->flags |= SA_FLAG_COMP_SUPP; 930 if (comp_enabled) 931 softc->flags |= SA_FLAG_COMP_ENABLED; 932 } else 933 softc->flags |= SA_FLAG_COMP_UNSUPP; 934 } 935 bzero(g, sizeof(struct mtget)); 936 g->mt_type = MT_ISAR; 937 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 938 g->mt_comp = MT_COMP_UNSUPP; 939 g->mt_comp0 = MT_COMP_UNSUPP; 940 g->mt_comp1 = MT_COMP_UNSUPP; 941 g->mt_comp2 = MT_COMP_UNSUPP; 942 g->mt_comp3 = MT_COMP_UNSUPP; 943 } else { 944 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 945 g->mt_comp = MT_COMP_DISABLED; 946 } else { 947 g->mt_comp = softc->comp_algorithm; 948 } 949 g->mt_comp0 = softc->comp_algorithm; 950 g->mt_comp1 = softc->comp_algorithm; 951 g->mt_comp2 = softc->comp_algorithm; 952 g->mt_comp3 = softc->comp_algorithm; 953 } 954 g->mt_density = softc->media_density; 955 g->mt_density0 = softc->media_density; 956 g->mt_density1 = softc->media_density; 957 g->mt_density2 = softc->media_density; 958 g->mt_density3 = softc->media_density; 959 g->mt_blksiz = softc->media_blksize; 960 g->mt_blksiz0 = softc->media_blksize; 961 g->mt_blksiz1 = softc->media_blksize; 962 g->mt_blksiz2 = softc->media_blksize; 963 g->mt_blksiz3 = softc->media_blksize; 964 g->mt_fileno = softc->fileno; 965 g->mt_blkno = softc->blkno; 966 g->mt_dsreg = (short) softc->dsreg; 967 /* 968 * Yes, we know that this is likely to overflow 969 */ 970 if (softc->last_resid_was_io) { 971 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 972 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 973 softc->last_io_resid = 0; 974 } 975 } 976 } else { 977 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 978 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 979 softc->last_ctl_resid = 0; 980 } 981 } 982 } 983 error = 0; 984 break; 985 } 986 case MTIOCERRSTAT: 987 { 988 struct scsi_tape_errors *sep = 989 &((union mterrstat *)arg)->scsi_errstat; 990 991 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 992 ("saioctl: MTIOCERRSTAT\n")); 993 994 bzero(sep, sizeof(*sep)); 995 sep->io_resid = softc->last_io_resid; 996 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 997 sizeof (sep->io_sense)); 998 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 999 sizeof (sep->io_cdb)); 1000 sep->ctl_resid = softc->last_ctl_resid; 1001 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1002 sizeof (sep->ctl_sense)); 1003 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1004 sizeof (sep->ctl_cdb)); 1005 1006 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1007 didlockperiph) 1008 bzero((caddr_t) &softc->errinfo, 1009 sizeof (softc->errinfo)); 1010 error = 0; 1011 break; 1012 } 1013 case MTIOCTOP: 1014 { 1015 struct mtop *mt; 1016 int count; 1017 1018 PENDING_MOUNT_CHECK(softc, periph, dev); 1019 1020 mt = (struct mtop *)arg; 1021 1022 1023 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1024 ("saioctl: op=0x%x count=0x%x\n", 1025 mt->mt_op, mt->mt_count)); 1026 1027 count = mt->mt_count; 1028 switch (mt->mt_op) { 1029 case MTWEOF: /* write an end-of-file marker */ 1030 /* 1031 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1032 * flag because by keeping track of filemarks 1033 * we have last written we know ehether or not 1034 * we need to write more when we close the device. 1035 */ 1036 error = sawritefilemarks(periph, count, FALSE); 1037 break; 1038 case MTWSS: /* write a setmark */ 1039 error = sawritefilemarks(periph, count, TRUE); 1040 break; 1041 case MTBSR: /* backward space record */ 1042 case MTFSR: /* forward space record */ 1043 case MTBSF: /* backward space file */ 1044 case MTFSF: /* forward space file */ 1045 case MTBSS: /* backward space setmark */ 1046 case MTFSS: /* forward space setmark */ 1047 case MTEOD: /* space to end of recorded medium */ 1048 { 1049 int nmarks; 1050 1051 spaceop = SS_FILEMARKS; 1052 nmarks = softc->filemarks; 1053 error = sacheckeod(periph); 1054 if (error) { 1055 xpt_print(periph->path, 1056 "EOD check prior to spacing failed\n"); 1057 softc->flags |= SA_FLAG_EIO_PENDING; 1058 break; 1059 } 1060 nmarks -= softc->filemarks; 1061 switch(mt->mt_op) { 1062 case MTBSR: 1063 count = -count; 1064 /* FALLTHROUGH */ 1065 case MTFSR: 1066 spaceop = SS_BLOCKS; 1067 break; 1068 case MTBSF: 1069 count = -count; 1070 /* FALLTHROUGH */ 1071 case MTFSF: 1072 break; 1073 case MTBSS: 1074 count = -count; 1075 /* FALLTHROUGH */ 1076 case MTFSS: 1077 spaceop = SS_SETMARKS; 1078 break; 1079 case MTEOD: 1080 spaceop = SS_EOD; 1081 count = 0; 1082 nmarks = 0; 1083 break; 1084 default: 1085 error = EINVAL; 1086 break; 1087 } 1088 if (error) 1089 break; 1090 1091 nmarks = softc->filemarks; 1092 /* 1093 * XXX: Why are we checking again? 1094 */ 1095 error = sacheckeod(periph); 1096 if (error) 1097 break; 1098 nmarks -= softc->filemarks; 1099 error = saspace(periph, count - nmarks, spaceop); 1100 /* 1101 * At this point, clear that we've written the tape 1102 * and that we've written any filemarks. We really 1103 * don't know what the applications wishes to do next- 1104 * the sacheckeod's will make sure we terminated the 1105 * tape correctly if we'd been writing, but the next 1106 * action the user application takes will set again 1107 * whether we need to write filemarks. 1108 */ 1109 softc->flags &= 1110 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1111 softc->filemarks = 0; 1112 break; 1113 } 1114 case MTREW: /* rewind */ 1115 PENDING_MOUNT_CHECK(softc, periph, dev); 1116 (void) sacheckeod(periph); 1117 error = sarewind(periph); 1118 /* see above */ 1119 softc->flags &= 1120 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1121 softc->flags &= ~SA_FLAG_ERR_PENDING; 1122 softc->filemarks = 0; 1123 break; 1124 case MTERASE: /* erase */ 1125 PENDING_MOUNT_CHECK(softc, periph, dev); 1126 error = saerase(periph, count); 1127 softc->flags &= 1128 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1129 softc->flags &= ~SA_FLAG_ERR_PENDING; 1130 break; 1131 case MTRETENS: /* re-tension tape */ 1132 PENDING_MOUNT_CHECK(softc, periph, dev); 1133 error = saretension(periph); 1134 softc->flags &= 1135 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1136 softc->flags &= ~SA_FLAG_ERR_PENDING; 1137 break; 1138 case MTOFFL: /* rewind and put the drive offline */ 1139 1140 PENDING_MOUNT_CHECK(softc, periph, dev); 1141 1142 (void) sacheckeod(periph); 1143 /* see above */ 1144 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1145 softc->filemarks = 0; 1146 1147 error = sarewind(periph); 1148 /* clear the frozen flag anyway */ 1149 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1150 1151 /* 1152 * Be sure to allow media removal before ejecting. 1153 */ 1154 1155 saprevent(periph, PR_ALLOW); 1156 if (error == 0) { 1157 error = saloadunload(periph, FALSE); 1158 if (error == 0) { 1159 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1160 } 1161 } 1162 break; 1163 1164 case MTNOP: /* no operation, sets status only */ 1165 case MTCACHE: /* enable controller cache */ 1166 case MTNOCACHE: /* disable controller cache */ 1167 error = 0; 1168 break; 1169 1170 case MTSETBSIZ: /* Set block size for device */ 1171 1172 PENDING_MOUNT_CHECK(softc, periph, dev); 1173 1174 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1175 0, 0, 0); 1176 if (error == 0) { 1177 softc->last_media_blksize = 1178 softc->media_blksize; 1179 softc->media_blksize = count; 1180 if (count) { 1181 softc->flags |= SA_FLAG_FIXED; 1182 if (powerof2(count)) { 1183 softc->blk_shift = 1184 ffs(count) - 1; 1185 softc->blk_mask = count - 1; 1186 } else { 1187 softc->blk_mask = ~0; 1188 softc->blk_shift = 0; 1189 } 1190 /* 1191 * Make the user's desire 'persistent'. 1192 */ 1193 softc->quirks &= ~SA_QUIRK_VARIABLE; 1194 softc->quirks |= SA_QUIRK_FIXED; 1195 } else { 1196 softc->flags &= ~SA_FLAG_FIXED; 1197 if (softc->max_blk == 0) { 1198 softc->max_blk = ~0; 1199 } 1200 softc->blk_shift = 0; 1201 if (softc->blk_gran != 0) { 1202 softc->blk_mask = 1203 softc->blk_gran - 1; 1204 } else { 1205 softc->blk_mask = 0; 1206 } 1207 /* 1208 * Make the user's desire 'persistent'. 1209 */ 1210 softc->quirks |= SA_QUIRK_VARIABLE; 1211 softc->quirks &= ~SA_QUIRK_FIXED; 1212 } 1213 } 1214 break; 1215 case MTSETDNSTY: /* Set density for device and mode */ 1216 PENDING_MOUNT_CHECK(softc, periph, dev); 1217 1218 if (count > UCHAR_MAX) { 1219 error = EINVAL; 1220 break; 1221 } else { 1222 error = sasetparams(periph, SA_PARAM_DENSITY, 1223 0, count, 0, 0); 1224 } 1225 break; 1226 case MTCOMP: /* enable compression */ 1227 PENDING_MOUNT_CHECK(softc, periph, dev); 1228 /* 1229 * Some devices don't support compression, and 1230 * don't like it if you ask them for the 1231 * compression page. 1232 */ 1233 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1234 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1235 error = ENODEV; 1236 break; 1237 } 1238 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1239 0, 0, count, SF_NO_PRINT); 1240 break; 1241 default: 1242 error = EINVAL; 1243 } 1244 break; 1245 } 1246 case MTIOCIEOT: 1247 case MTIOCEEOT: 1248 error = 0; 1249 break; 1250 case MTIOCRDSPOS: 1251 PENDING_MOUNT_CHECK(softc, periph, dev); 1252 error = sardpos(periph, 0, (u_int32_t *) arg); 1253 break; 1254 case MTIOCRDHPOS: 1255 PENDING_MOUNT_CHECK(softc, periph, dev); 1256 error = sardpos(periph, 1, (u_int32_t *) arg); 1257 break; 1258 case MTIOCSLOCATE: 1259 PENDING_MOUNT_CHECK(softc, periph, dev); 1260 error = sasetpos(periph, 0, (u_int32_t *) arg); 1261 break; 1262 case MTIOCHLOCATE: 1263 PENDING_MOUNT_CHECK(softc, periph, dev); 1264 error = sasetpos(periph, 1, (u_int32_t *) arg); 1265 break; 1266 case MTIOCGETEOTMODEL: 1267 error = 0; 1268 if (softc->quirks & SA_QUIRK_1FM) 1269 mode = 1; 1270 else 1271 mode = 2; 1272 *((u_int32_t *) arg) = mode; 1273 break; 1274 case MTIOCSETEOTMODEL: 1275 error = 0; 1276 switch (*((u_int32_t *) arg)) { 1277 case 1: 1278 softc->quirks &= ~SA_QUIRK_2FM; 1279 softc->quirks |= SA_QUIRK_1FM; 1280 break; 1281 case 2: 1282 softc->quirks &= ~SA_QUIRK_1FM; 1283 softc->quirks |= SA_QUIRK_2FM; 1284 break; 1285 default: 1286 error = EINVAL; 1287 break; 1288 } 1289 break; 1290 default: 1291 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1292 break; 1293 } 1294 1295 /* 1296 * Check to see if we cleared a frozen state 1297 */ 1298 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1299 switch(cmd) { 1300 case MTIOCRDSPOS: 1301 case MTIOCRDHPOS: 1302 case MTIOCSLOCATE: 1303 case MTIOCHLOCATE: 1304 softc->fileno = (daddr_t) -1; 1305 softc->blkno = (daddr_t) -1; 1306 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1307 xpt_print(periph->path, 1308 "tape state now unfrozen.\n"); 1309 break; 1310 default: 1311 break; 1312 } 1313 } 1314 if (didlockperiph) { 1315 cam_periph_unhold(periph); 1316 } 1317 cam_periph_unlock(periph); 1318 return (error); 1319 } 1320 1321 static void 1322 sainit(void) 1323 { 1324 cam_status status; 1325 1326 /* 1327 * Install a global async callback. 1328 */ 1329 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1330 1331 if (status != CAM_REQ_CMP) { 1332 printf("sa: Failed to attach master async callback " 1333 "due to status 0x%x!\n", status); 1334 } 1335 } 1336 1337 static void 1338 saoninvalidate(struct cam_periph *periph) 1339 { 1340 struct sa_softc *softc; 1341 1342 softc = (struct sa_softc *)periph->softc; 1343 1344 /* 1345 * De-register any async callbacks. 1346 */ 1347 xpt_register_async(0, saasync, periph, periph->path); 1348 1349 softc->flags |= SA_FLAG_INVALID; 1350 1351 /* 1352 * Return all queued I/O with ENXIO. 1353 * XXX Handle any transactions queued to the card 1354 * with XPT_ABORT_CCB. 1355 */ 1356 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1357 softc->queue_count = 0; 1358 1359 xpt_print(periph->path, "lost device\n"); 1360 1361 } 1362 1363 static void 1364 sacleanup(struct cam_periph *periph) 1365 { 1366 struct sa_softc *softc; 1367 int i; 1368 1369 softc = (struct sa_softc *)periph->softc; 1370 1371 xpt_print(periph->path, "removing device entry\n"); 1372 devstat_remove_entry(softc->device_stats); 1373 cam_periph_unlock(periph); 1374 destroy_dev(softc->devs.ctl_dev); 1375 for (i = 0; i < SA_NUM_MODES; i++) { 1376 destroy_dev(softc->devs.mode_devs[i].r_dev); 1377 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1378 destroy_dev(softc->devs.mode_devs[i].er_dev); 1379 } 1380 cam_periph_lock(periph); 1381 free(softc, M_SCSISA); 1382 } 1383 1384 static void 1385 saasync(void *callback_arg, u_int32_t code, 1386 struct cam_path *path, void *arg) 1387 { 1388 struct cam_periph *periph; 1389 1390 periph = (struct cam_periph *)callback_arg; 1391 switch (code) { 1392 case AC_FOUND_DEVICE: 1393 { 1394 struct ccb_getdev *cgd; 1395 cam_status status; 1396 1397 cgd = (struct ccb_getdev *)arg; 1398 if (cgd == NULL) 1399 break; 1400 1401 if (cgd->protocol != PROTO_SCSI) 1402 break; 1403 1404 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1405 break; 1406 1407 /* 1408 * Allocate a peripheral instance for 1409 * this device and start the probe 1410 * process. 1411 */ 1412 status = cam_periph_alloc(saregister, saoninvalidate, 1413 sacleanup, sastart, 1414 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1415 saasync, AC_FOUND_DEVICE, cgd); 1416 1417 if (status != CAM_REQ_CMP 1418 && status != CAM_REQ_INPROG) 1419 printf("saasync: Unable to probe new device " 1420 "due to status 0x%x\n", status); 1421 break; 1422 } 1423 default: 1424 cam_periph_async(periph, code, path, arg); 1425 break; 1426 } 1427 } 1428 1429 static cam_status 1430 saregister(struct cam_periph *periph, void *arg) 1431 { 1432 struct sa_softc *softc; 1433 struct ccb_getdev *cgd; 1434 struct ccb_pathinq cpi; 1435 caddr_t match; 1436 int i; 1437 1438 cgd = (struct ccb_getdev *)arg; 1439 if (periph == NULL) { 1440 printf("saregister: periph was NULL!!\n"); 1441 return (CAM_REQ_CMP_ERR); 1442 } 1443 1444 if (cgd == NULL) { 1445 printf("saregister: no getdev CCB, can't register device\n"); 1446 return (CAM_REQ_CMP_ERR); 1447 } 1448 1449 softc = (struct sa_softc *) 1450 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1451 if (softc == NULL) { 1452 printf("saregister: Unable to probe new device. " 1453 "Unable to allocate softc\n"); 1454 return (CAM_REQ_CMP_ERR); 1455 } 1456 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1457 softc->state = SA_STATE_NORMAL; 1458 softc->fileno = (daddr_t) -1; 1459 softc->blkno = (daddr_t) -1; 1460 1461 bioq_init(&softc->bio_queue); 1462 periph->softc = softc; 1463 1464 /* 1465 * See if this device has any quirks. 1466 */ 1467 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1468 (caddr_t)sa_quirk_table, 1469 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1470 sizeof(*sa_quirk_table), scsi_inquiry_match); 1471 1472 if (match != NULL) { 1473 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1474 softc->last_media_blksize = 1475 ((struct sa_quirk_entry *)match)->prefblk; 1476 #ifdef CAMDEBUG 1477 xpt_print(periph->path, "found quirk entry %d\n", 1478 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1479 #endif 1480 } else 1481 softc->quirks = SA_QUIRK_NONE; 1482 1483 bzero(&cpi, sizeof(cpi)); 1484 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1485 cpi.ccb_h.func_code = XPT_PATH_INQ; 1486 xpt_action((union ccb *)&cpi); 1487 1488 /* 1489 * The SA driver supports a blocksize, but we don't know the 1490 * blocksize until we media is inserted. So, set a flag to 1491 * indicate that the blocksize is unavailable right now. 1492 */ 1493 cam_periph_unlock(periph); 1494 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1495 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1496 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1497 1498 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1499 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1500 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1501 softc->devs.ctl_dev->si_drv1 = periph; 1502 1503 for (i = 0; i < SA_NUM_MODES; i++) { 1504 1505 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1506 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1507 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1508 periph->periph_name, periph->unit_number, i); 1509 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1510 1511 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1512 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1513 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1514 periph->periph_name, periph->unit_number, i); 1515 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1516 1517 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1518 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1519 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1520 periph->periph_name, periph->unit_number, i); 1521 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1522 1523 /* 1524 * Make the (well known) aliases for the first mode. 1525 */ 1526 if (i == 0) { 1527 struct cdev *alias; 1528 1529 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1530 "%s%d", periph->periph_name, periph->unit_number); 1531 alias->si_drv1 = periph; 1532 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1533 "n%s%d", periph->periph_name, periph->unit_number); 1534 alias->si_drv1 = periph; 1535 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1536 "e%s%d", periph->periph_name, periph->unit_number); 1537 alias->si_drv1 = periph; 1538 } 1539 } 1540 cam_periph_lock(periph); 1541 1542 /* 1543 * Add an async callback so that we get 1544 * notified if this device goes away. 1545 */ 1546 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1547 1548 xpt_announce_periph(periph, NULL); 1549 1550 return (CAM_REQ_CMP); 1551 } 1552 1553 static void 1554 sastart(struct cam_periph *periph, union ccb *start_ccb) 1555 { 1556 struct sa_softc *softc; 1557 1558 softc = (struct sa_softc *)periph->softc; 1559 1560 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1561 1562 1563 switch (softc->state) { 1564 case SA_STATE_NORMAL: 1565 { 1566 /* Pull a buffer from the queue and get going on it */ 1567 struct bio *bp; 1568 1569 /* 1570 * See if there is a buf with work for us to do.. 1571 */ 1572 bp = bioq_first(&softc->bio_queue); 1573 if (periph->immediate_priority <= periph->pinfo.priority) { 1574 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1575 ("queuing for immediate ccb\n")); 1576 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1577 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1578 periph_links.sle); 1579 periph->immediate_priority = CAM_PRIORITY_NONE; 1580 wakeup(&periph->ccb_list); 1581 } else if (bp == NULL) { 1582 xpt_release_ccb(start_ccb); 1583 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1584 struct bio *done_bp; 1585 again: 1586 softc->queue_count--; 1587 bioq_remove(&softc->bio_queue, bp); 1588 bp->bio_resid = bp->bio_bcount; 1589 done_bp = bp; 1590 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1591 /* 1592 * We now just clear errors in this case 1593 * and let the residual be the notifier. 1594 */ 1595 bp->bio_error = 0; 1596 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1597 /* 1598 * This can only happen if we're reading 1599 * in fixed length mode. In this case, 1600 * we dump the rest of the list the 1601 * same way. 1602 */ 1603 bp->bio_error = 0; 1604 if (bioq_first(&softc->bio_queue) != NULL) { 1605 biodone(done_bp); 1606 goto again; 1607 } 1608 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1609 bp->bio_error = EIO; 1610 bp->bio_flags |= BIO_ERROR; 1611 } 1612 bp = bioq_first(&softc->bio_queue); 1613 /* 1614 * Only if we have no other buffers queued up 1615 * do we clear the pending error flag. 1616 */ 1617 if (bp == NULL) 1618 softc->flags &= ~SA_FLAG_ERR_PENDING; 1619 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1620 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1621 "%d more buffers queued up\n", 1622 (softc->flags & SA_FLAG_ERR_PENDING), 1623 (bp != NULL)? "not " : " ", softc->queue_count)); 1624 xpt_release_ccb(start_ccb); 1625 biodone(done_bp); 1626 } else { 1627 u_int32_t length; 1628 1629 bioq_remove(&softc->bio_queue, bp); 1630 softc->queue_count--; 1631 1632 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1633 if (softc->blk_shift != 0) { 1634 length = 1635 bp->bio_bcount >> softc->blk_shift; 1636 } else if (softc->media_blksize != 0) { 1637 length = bp->bio_bcount / 1638 softc->media_blksize; 1639 } else { 1640 bp->bio_error = EIO; 1641 xpt_print(periph->path, "zero blocksize" 1642 " for FIXED length writes?\n"); 1643 biodone(bp); 1644 break; 1645 } 1646 #if 0 1647 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1648 ("issuing a %d fixed record %s\n", 1649 length, (bp->bio_cmd == BIO_READ)? "read" : 1650 "write")); 1651 #endif 1652 } else { 1653 length = bp->bio_bcount; 1654 #if 0 1655 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1656 ("issuing a %d variable byte %s\n", 1657 length, (bp->bio_cmd == BIO_READ)? "read" : 1658 "write")); 1659 #endif 1660 } 1661 devstat_start_transaction_bio(softc->device_stats, bp); 1662 /* 1663 * Some people have theorized that we should 1664 * suppress illegal length indication if we are 1665 * running in variable block mode so that we don't 1666 * have to request sense every time our requested 1667 * block size is larger than the written block. 1668 * The residual information from the ccb allows 1669 * us to identify this situation anyway. The only 1670 * problem with this is that we will not get 1671 * information about blocks that are larger than 1672 * our read buffer unless we set the block size 1673 * in the mode page to something other than 0. 1674 * 1675 * I believe that this is a non-issue. If user apps 1676 * don't adjust their read size to match our record 1677 * size, that's just life. Anyway, the typical usage 1678 * would be to issue, e.g., 64KB reads and occasionally 1679 * have to do deal with 512 byte or 1KB intermediate 1680 * records. 1681 */ 1682 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1683 MTIO_DSREG_RD : MTIO_DSREG_WR; 1684 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1685 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1686 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1687 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1688 IO_TIMEOUT); 1689 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1690 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1691 start_ccb->ccb_h.ccb_bp = bp; 1692 bp = bioq_first(&softc->bio_queue); 1693 xpt_action(start_ccb); 1694 } 1695 1696 if (bp != NULL) { 1697 /* Have more work to do, so ensure we stay scheduled */ 1698 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1699 } 1700 break; 1701 } 1702 case SA_STATE_ABNORMAL: 1703 default: 1704 panic("state 0x%x in sastart", softc->state); 1705 break; 1706 } 1707 } 1708 1709 1710 static void 1711 sadone(struct cam_periph *periph, union ccb *done_ccb) 1712 { 1713 struct sa_softc *softc; 1714 struct ccb_scsiio *csio; 1715 1716 softc = (struct sa_softc *)periph->softc; 1717 csio = &done_ccb->csio; 1718 switch (CCB_Type(csio)) { 1719 case SA_CCB_BUFFER_IO: 1720 { 1721 struct bio *bp; 1722 int error; 1723 1724 softc->dsreg = MTIO_DSREG_REST; 1725 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1726 error = 0; 1727 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1728 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1729 /* 1730 * A retry was scheduled, so just return. 1731 */ 1732 return; 1733 } 1734 } 1735 1736 if (error == EIO) { 1737 1738 /* 1739 * Catastrophic error. Mark the tape as frozen 1740 * (we no longer know tape position). 1741 * 1742 * Return all queued I/O with EIO, and unfreeze 1743 * our queue so that future transactions that 1744 * attempt to fix this problem can get to the 1745 * device. 1746 * 1747 */ 1748 1749 softc->flags |= SA_FLAG_TAPE_FROZEN; 1750 bioq_flush(&softc->bio_queue, NULL, EIO); 1751 } 1752 if (error != 0) { 1753 bp->bio_resid = bp->bio_bcount; 1754 bp->bio_error = error; 1755 bp->bio_flags |= BIO_ERROR; 1756 /* 1757 * In the error case, position is updated in saerror. 1758 */ 1759 } else { 1760 bp->bio_resid = csio->resid; 1761 bp->bio_error = 0; 1762 if (csio->resid != 0) { 1763 bp->bio_flags |= BIO_ERROR; 1764 } 1765 if (bp->bio_cmd == BIO_WRITE) { 1766 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1767 softc->filemarks = 0; 1768 } 1769 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1770 (softc->blkno != (daddr_t) -1)) { 1771 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1772 u_int32_t l; 1773 if (softc->blk_shift != 0) { 1774 l = bp->bio_bcount >> 1775 softc->blk_shift; 1776 } else { 1777 l = bp->bio_bcount / 1778 softc->media_blksize; 1779 } 1780 softc->blkno += (daddr_t) l; 1781 } else { 1782 softc->blkno++; 1783 } 1784 } 1785 } 1786 /* 1787 * If we had an error (immediate or pending), 1788 * release the device queue now. 1789 */ 1790 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1791 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1792 #ifdef CAMDEBUG 1793 if (error || bp->bio_resid) { 1794 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1795 ("error %d resid %ld count %ld\n", error, 1796 bp->bio_resid, bp->bio_bcount)); 1797 } 1798 #endif 1799 biofinish(bp, softc->device_stats, 0); 1800 break; 1801 } 1802 case SA_CCB_WAITING: 1803 { 1804 /* Caller will release the CCB */ 1805 wakeup(&done_ccb->ccb_h.cbfcnp); 1806 return; 1807 } 1808 } 1809 xpt_release_ccb(done_ccb); 1810 } 1811 1812 /* 1813 * Mount the tape (make sure it's ready for I/O). 1814 */ 1815 static int 1816 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1817 { 1818 struct sa_softc *softc; 1819 union ccb *ccb; 1820 int error; 1821 1822 /* 1823 * oflags can be checked for 'kind' of open (read-only check) - later 1824 * dev can be checked for a control-mode or compression open - later 1825 */ 1826 UNUSED_PARAMETER(oflags); 1827 UNUSED_PARAMETER(dev); 1828 1829 1830 softc = (struct sa_softc *)periph->softc; 1831 1832 /* 1833 * This should determine if something has happend since the last 1834 * open/mount that would invalidate the mount. We do *not* want 1835 * to retry this command- we just want the status. But we only 1836 * do this if we're mounted already- if we're not mounted, 1837 * we don't care about the unit read state and can instead use 1838 * this opportunity to attempt to reserve the tape unit. 1839 */ 1840 1841 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1842 ccb = cam_periph_getccb(periph, 1); 1843 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1844 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1845 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1846 softc->device_stats); 1847 QFRLS(ccb); 1848 if (error == ENXIO) { 1849 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1850 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1851 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1852 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1853 softc->device_stats); 1854 QFRLS(ccb); 1855 } else if (error) { 1856 /* 1857 * We don't need to freeze the tape because we 1858 * will now attempt to rewind/load it. 1859 */ 1860 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1861 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1862 xpt_print(periph->path, 1863 "error %d on TUR in samount\n", error); 1864 } 1865 } 1866 } else { 1867 error = sareservereleaseunit(periph, TRUE); 1868 if (error) { 1869 return (error); 1870 } 1871 ccb = cam_periph_getccb(periph, 1); 1872 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1873 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1874 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1875 softc->device_stats); 1876 QFRLS(ccb); 1877 } 1878 1879 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1880 struct scsi_read_block_limits_data *rblim = NULL; 1881 int comp_enabled, comp_supported; 1882 u_int8_t write_protect, guessing = 0; 1883 1884 /* 1885 * Clear out old state. 1886 */ 1887 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1888 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1889 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1890 softc->filemarks = 0; 1891 1892 /* 1893 * *Very* first off, make sure we're loaded to BOT. 1894 */ 1895 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1896 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1897 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1898 softc->device_stats); 1899 QFRLS(ccb); 1900 1901 /* 1902 * In case this doesn't work, do a REWIND instead 1903 */ 1904 if (error) { 1905 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1906 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1907 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1908 softc->device_stats); 1909 QFRLS(ccb); 1910 } 1911 if (error) { 1912 xpt_release_ccb(ccb); 1913 goto exit; 1914 } 1915 1916 /* 1917 * Do a dummy test read to force access to the 1918 * media so that the drive will really know what's 1919 * there. We actually don't really care what the 1920 * blocksize on tape is and don't expect to really 1921 * read a full record. 1922 */ 1923 rblim = (struct scsi_read_block_limits_data *) 1924 malloc(8192, M_SCSISA, M_NOWAIT); 1925 if (rblim == NULL) { 1926 xpt_print(periph->path, "no memory for test read\n"); 1927 xpt_release_ccb(ccb); 1928 error = ENOMEM; 1929 goto exit; 1930 } 1931 1932 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1933 scsi_sa_read_write(&ccb->csio, 0, sadone, 1934 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1935 (void *) rblim, 8192, SSD_FULL_SIZE, 1936 IO_TIMEOUT); 1937 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1938 softc->device_stats); 1939 QFRLS(ccb); 1940 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1941 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1942 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1943 SF_NO_PRINT | SF_RETRY_UA, 1944 softc->device_stats); 1945 QFRLS(ccb); 1946 if (error) { 1947 xpt_print(periph->path, 1948 "unable to rewind after test read\n"); 1949 xpt_release_ccb(ccb); 1950 goto exit; 1951 } 1952 } 1953 1954 /* 1955 * Next off, determine block limits. 1956 */ 1957 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1958 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1959 1960 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1961 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 1962 1963 QFRLS(ccb); 1964 xpt_release_ccb(ccb); 1965 1966 if (error != 0) { 1967 /* 1968 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1969 * a MANDATORY command. Anyway- it doesn't matter- 1970 * we can proceed anyway. 1971 */ 1972 softc->blk_gran = 0; 1973 softc->max_blk = ~0; 1974 softc->min_blk = 0; 1975 } else { 1976 if (softc->scsi_rev >= SCSI_REV_SPC) { 1977 softc->blk_gran = RBL_GRAN(rblim); 1978 } else { 1979 softc->blk_gran = 0; 1980 } 1981 /* 1982 * We take max_blk == min_blk to mean a default to 1983 * fixed mode- but note that whatever we get out of 1984 * sagetparams below will actually determine whether 1985 * we are actually *in* fixed mode. 1986 */ 1987 softc->max_blk = scsi_3btoul(rblim->maximum); 1988 softc->min_blk = scsi_2btoul(rblim->minimum); 1989 1990 1991 } 1992 /* 1993 * Next, perform a mode sense to determine 1994 * current density, blocksize, compression etc. 1995 */ 1996 error = sagetparams(periph, SA_PARAM_ALL, 1997 &softc->media_blksize, 1998 &softc->media_density, 1999 &softc->media_numblks, 2000 &softc->buffer_mode, &write_protect, 2001 &softc->speed, &comp_supported, 2002 &comp_enabled, &softc->comp_algorithm, 2003 NULL); 2004 2005 if (error != 0) { 2006 /* 2007 * We could work a little harder here. We could 2008 * adjust our attempts to get information. It 2009 * might be an ancient tape drive. If someone 2010 * nudges us, we'll do that. 2011 */ 2012 goto exit; 2013 } 2014 2015 /* 2016 * If no quirk has determined that this is a device that is 2017 * preferred to be in fixed or variable mode, now is the time 2018 * to find out. 2019 */ 2020 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2021 guessing = 1; 2022 /* 2023 * This could be expensive to find out. Luckily we 2024 * only need to do this once. If we start out in 2025 * 'default' mode, try and set ourselves to one 2026 * of the densities that would determine a wad 2027 * of other stuff. Go from highest to lowest. 2028 */ 2029 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2030 int i; 2031 static u_int8_t ctry[] = { 2032 SCSI_DENSITY_HALFINCH_PE, 2033 SCSI_DENSITY_HALFINCH_6250C, 2034 SCSI_DENSITY_HALFINCH_6250, 2035 SCSI_DENSITY_HALFINCH_1600, 2036 SCSI_DENSITY_HALFINCH_800, 2037 SCSI_DENSITY_QIC_4GB, 2038 SCSI_DENSITY_QIC_2GB, 2039 SCSI_DENSITY_QIC_525_320, 2040 SCSI_DENSITY_QIC_150, 2041 SCSI_DENSITY_QIC_120, 2042 SCSI_DENSITY_QIC_24, 2043 SCSI_DENSITY_QIC_11_9TRK, 2044 SCSI_DENSITY_QIC_11_4TRK, 2045 SCSI_DENSITY_QIC_1320, 2046 SCSI_DENSITY_QIC_3080, 2047 0 2048 }; 2049 for (i = 0; ctry[i]; i++) { 2050 error = sasetparams(periph, 2051 SA_PARAM_DENSITY, 0, ctry[i], 2052 0, SF_NO_PRINT); 2053 if (error == 0) { 2054 softc->media_density = ctry[i]; 2055 break; 2056 } 2057 } 2058 } 2059 switch (softc->media_density) { 2060 case SCSI_DENSITY_QIC_11_4TRK: 2061 case SCSI_DENSITY_QIC_11_9TRK: 2062 case SCSI_DENSITY_QIC_24: 2063 case SCSI_DENSITY_QIC_120: 2064 case SCSI_DENSITY_QIC_150: 2065 case SCSI_DENSITY_QIC_525_320: 2066 case SCSI_DENSITY_QIC_1320: 2067 case SCSI_DENSITY_QIC_3080: 2068 softc->quirks &= ~SA_QUIRK_2FM; 2069 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2070 softc->last_media_blksize = 512; 2071 break; 2072 case SCSI_DENSITY_QIC_4GB: 2073 case SCSI_DENSITY_QIC_2GB: 2074 softc->quirks &= ~SA_QUIRK_2FM; 2075 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2076 softc->last_media_blksize = 1024; 2077 break; 2078 default: 2079 softc->last_media_blksize = 2080 softc->media_blksize; 2081 softc->quirks |= SA_QUIRK_VARIABLE; 2082 break; 2083 } 2084 } 2085 2086 /* 2087 * If no quirk has determined that this is a device that needs 2088 * to have 2 Filemarks at EOD, now is the time to find out. 2089 */ 2090 2091 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2092 switch (softc->media_density) { 2093 case SCSI_DENSITY_HALFINCH_800: 2094 case SCSI_DENSITY_HALFINCH_1600: 2095 case SCSI_DENSITY_HALFINCH_6250: 2096 case SCSI_DENSITY_HALFINCH_6250C: 2097 case SCSI_DENSITY_HALFINCH_PE: 2098 softc->quirks &= ~SA_QUIRK_1FM; 2099 softc->quirks |= SA_QUIRK_2FM; 2100 break; 2101 default: 2102 break; 2103 } 2104 } 2105 2106 /* 2107 * Now validate that some info we got makes sense. 2108 */ 2109 if ((softc->max_blk < softc->media_blksize) || 2110 (softc->min_blk > softc->media_blksize && 2111 softc->media_blksize)) { 2112 xpt_print(periph->path, 2113 "BLOCK LIMITS (%d..%d) could not match current " 2114 "block settings (%d)- adjusting\n", softc->min_blk, 2115 softc->max_blk, softc->media_blksize); 2116 softc->max_blk = softc->min_blk = 2117 softc->media_blksize; 2118 } 2119 2120 /* 2121 * Now put ourselves into the right frame of mind based 2122 * upon quirks... 2123 */ 2124 tryagain: 2125 /* 2126 * If we want to be in FIXED mode and our current blocksize 2127 * is not equal to our last blocksize (if nonzero), try and 2128 * set ourselves to this last blocksize (as the 'preferred' 2129 * block size). The initial quirkmatch at registry sets the 2130 * initial 'last' blocksize. If, for whatever reason, this 2131 * 'last' blocksize is zero, set the blocksize to 512, 2132 * or min_blk if that's larger. 2133 */ 2134 if ((softc->quirks & SA_QUIRK_FIXED) && 2135 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2136 (softc->media_blksize != softc->last_media_blksize)) { 2137 softc->media_blksize = softc->last_media_blksize; 2138 if (softc->media_blksize == 0) { 2139 softc->media_blksize = 512; 2140 if (softc->media_blksize < softc->min_blk) { 2141 softc->media_blksize = softc->min_blk; 2142 } 2143 } 2144 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2145 softc->media_blksize, 0, 0, SF_NO_PRINT); 2146 if (error) { 2147 xpt_print(periph->path, 2148 "unable to set fixed blocksize to %d\n", 2149 softc->media_blksize); 2150 goto exit; 2151 } 2152 } 2153 2154 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2155 (softc->media_blksize != 0)) { 2156 softc->last_media_blksize = softc->media_blksize; 2157 softc->media_blksize = 0; 2158 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2159 0, 0, 0, SF_NO_PRINT); 2160 if (error) { 2161 /* 2162 * If this fails and we were guessing, just 2163 * assume that we got it wrong and go try 2164 * fixed block mode. Don't even check against 2165 * density code at this point. 2166 */ 2167 if (guessing) { 2168 softc->quirks &= ~SA_QUIRK_VARIABLE; 2169 softc->quirks |= SA_QUIRK_FIXED; 2170 if (softc->last_media_blksize == 0) 2171 softc->last_media_blksize = 512; 2172 goto tryagain; 2173 } 2174 xpt_print(periph->path, 2175 "unable to set variable blocksize\n"); 2176 goto exit; 2177 } 2178 } 2179 2180 /* 2181 * Now that we have the current block size, 2182 * set up some parameters for sastart's usage. 2183 */ 2184 if (softc->media_blksize) { 2185 softc->flags |= SA_FLAG_FIXED; 2186 if (powerof2(softc->media_blksize)) { 2187 softc->blk_shift = 2188 ffs(softc->media_blksize) - 1; 2189 softc->blk_mask = softc->media_blksize - 1; 2190 } else { 2191 softc->blk_mask = ~0; 2192 softc->blk_shift = 0; 2193 } 2194 } else { 2195 /* 2196 * The SCSI-3 spec allows 0 to mean "unspecified". 2197 * The SCSI-1 spec allows 0 to mean 'infinite'. 2198 * 2199 * Either works here. 2200 */ 2201 if (softc->max_blk == 0) { 2202 softc->max_blk = ~0; 2203 } 2204 softc->blk_shift = 0; 2205 if (softc->blk_gran != 0) { 2206 softc->blk_mask = softc->blk_gran - 1; 2207 } else { 2208 softc->blk_mask = 0; 2209 } 2210 } 2211 2212 if (write_protect) 2213 softc->flags |= SA_FLAG_TAPE_WP; 2214 2215 if (comp_supported) { 2216 if (softc->saved_comp_algorithm == 0) 2217 softc->saved_comp_algorithm = 2218 softc->comp_algorithm; 2219 softc->flags |= SA_FLAG_COMP_SUPP; 2220 if (comp_enabled) 2221 softc->flags |= SA_FLAG_COMP_ENABLED; 2222 } else 2223 softc->flags |= SA_FLAG_COMP_UNSUPP; 2224 2225 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2226 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2227 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2228 0, 0, SF_NO_PRINT); 2229 if (error == 0) { 2230 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2231 } else { 2232 xpt_print(periph->path, 2233 "unable to set buffered mode\n"); 2234 } 2235 error = 0; /* not an error */ 2236 } 2237 2238 2239 if (error == 0) { 2240 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2241 } 2242 exit: 2243 if (rblim != NULL) 2244 free(rblim, M_SCSISA); 2245 2246 if (error != 0) { 2247 softc->dsreg = MTIO_DSREG_NIL; 2248 } else { 2249 softc->fileno = softc->blkno = 0; 2250 softc->dsreg = MTIO_DSREG_REST; 2251 } 2252 #ifdef SA_1FM_AT_EOD 2253 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2254 softc->quirks |= SA_QUIRK_1FM; 2255 #else 2256 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2257 softc->quirks |= SA_QUIRK_2FM; 2258 #endif 2259 } else 2260 xpt_release_ccb(ccb); 2261 2262 /* 2263 * If we return an error, we're not mounted any more, 2264 * so release any device reservation. 2265 */ 2266 if (error != 0) { 2267 (void) sareservereleaseunit(periph, FALSE); 2268 } else { 2269 /* 2270 * Clear I/O residual. 2271 */ 2272 softc->last_io_resid = 0; 2273 softc->last_ctl_resid = 0; 2274 } 2275 return (error); 2276 } 2277 2278 /* 2279 * How many filemarks do we need to write if we were to terminate the 2280 * tape session right now? Note that this can be a negative number 2281 */ 2282 2283 static int 2284 samarkswanted(struct cam_periph *periph) 2285 { 2286 int markswanted; 2287 struct sa_softc *softc; 2288 2289 softc = (struct sa_softc *)periph->softc; 2290 markswanted = 0; 2291 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2292 markswanted++; 2293 if (softc->quirks & SA_QUIRK_2FM) 2294 markswanted++; 2295 } 2296 markswanted -= softc->filemarks; 2297 return (markswanted); 2298 } 2299 2300 static int 2301 sacheckeod(struct cam_periph *periph) 2302 { 2303 int error; 2304 int markswanted; 2305 2306 markswanted = samarkswanted(periph); 2307 2308 if (markswanted > 0) { 2309 error = sawritefilemarks(periph, markswanted, FALSE); 2310 } else { 2311 error = 0; 2312 } 2313 return (error); 2314 } 2315 2316 static int 2317 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2318 { 2319 static const char *toobig = 2320 "%d-byte tape record bigger than supplied buffer\n"; 2321 struct cam_periph *periph; 2322 struct sa_softc *softc; 2323 struct ccb_scsiio *csio; 2324 struct scsi_sense_data *sense; 2325 u_int32_t resid = 0; 2326 int32_t info = 0; 2327 cam_status status; 2328 int error_code, sense_key, asc, ascq, error, aqvalid; 2329 2330 periph = xpt_path_periph(ccb->ccb_h.path); 2331 softc = (struct sa_softc *)periph->softc; 2332 csio = &ccb->csio; 2333 sense = &csio->sense_data; 2334 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2335 aqvalid = sense->extra_len >= 6; 2336 error = 0; 2337 2338 status = csio->ccb_h.status & CAM_STATUS_MASK; 2339 2340 /* 2341 * Calculate/latch up, any residuals... We do this in a funny 2-step 2342 * so we can print stuff here if we have CAM_DEBUG enabled for this 2343 * unit. 2344 */ 2345 if (status == CAM_SCSI_STATUS_ERROR) { 2346 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2347 info = (int32_t) scsi_4btoul(sense->info); 2348 resid = info; 2349 if ((softc->flags & SA_FLAG_FIXED) != 0) 2350 resid *= softc->media_blksize; 2351 } else { 2352 resid = csio->dxfer_len; 2353 info = resid; 2354 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2355 if (softc->media_blksize) 2356 info /= softc->media_blksize; 2357 } 2358 } 2359 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2360 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2361 sizeof (struct scsi_sense_data)); 2362 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2363 (int) csio->cdb_len); 2364 softc->last_io_resid = resid; 2365 softc->last_resid_was_io = 1; 2366 } else { 2367 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2368 sizeof (struct scsi_sense_data)); 2369 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2370 (int) csio->cdb_len); 2371 softc->last_ctl_resid = resid; 2372 softc->last_resid_was_io = 0; 2373 } 2374 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2375 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2376 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2377 sense_key, asc, ascq, status, 2378 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2379 } else { 2380 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2381 ("Cam Status 0x%x\n", status)); 2382 } 2383 2384 switch (status) { 2385 case CAM_REQ_CMP: 2386 return (0); 2387 case CAM_SCSI_STATUS_ERROR: 2388 /* 2389 * If a read/write command, we handle it here. 2390 */ 2391 if (CCB_Type(csio) != SA_CCB_WAITING) { 2392 break; 2393 } 2394 /* 2395 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2396 * on a non read/write command, we assume it's not an error 2397 * and propagate the residule and return. 2398 */ 2399 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2400 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2401 csio->resid = resid; 2402 QFRLS(ccb); 2403 return (0); 2404 } 2405 /* 2406 * Otherwise, we let the common code handle this. 2407 */ 2408 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2409 2410 /* 2411 * XXX: To Be Fixed 2412 * We cannot depend upon CAM honoring retry counts for these. 2413 */ 2414 case CAM_SCSI_BUS_RESET: 2415 case CAM_BDR_SENT: 2416 if (ccb->ccb_h.retry_count <= 0) { 2417 return (EIO); 2418 } 2419 /* FALLTHROUGH */ 2420 default: 2421 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2422 } 2423 2424 /* 2425 * Handle filemark, end of tape, mismatched record sizes.... 2426 * From this point out, we're only handling read/write cases. 2427 * Handle writes && reads differently. 2428 */ 2429 2430 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2431 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2432 csio->resid = resid; 2433 error = ENOSPC; 2434 } else if (sense->flags & SSD_EOM) { 2435 softc->flags |= SA_FLAG_EOM_PENDING; 2436 /* 2437 * Grotesque as it seems, the few times 2438 * I've actually seen a non-zero resid, 2439 * the tape drive actually lied and had 2440 * written all the data!. 2441 */ 2442 csio->resid = 0; 2443 } 2444 } else { 2445 csio->resid = resid; 2446 if (sense_key == SSD_KEY_BLANK_CHECK) { 2447 if (softc->quirks & SA_QUIRK_1FM) { 2448 error = 0; 2449 softc->flags |= SA_FLAG_EOM_PENDING; 2450 } else { 2451 error = EIO; 2452 } 2453 } else if (sense->flags & SSD_FILEMARK) { 2454 if (softc->flags & SA_FLAG_FIXED) { 2455 error = -1; 2456 softc->flags |= SA_FLAG_EOF_PENDING; 2457 } 2458 /* 2459 * Unconditionally, if we detected a filemark on a read, 2460 * mark that we've run moved a file ahead. 2461 */ 2462 if (softc->fileno != (daddr_t) -1) { 2463 softc->fileno++; 2464 softc->blkno = 0; 2465 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2466 } 2467 } 2468 } 2469 2470 /* 2471 * Incorrect Length usually applies to read, but can apply to writes. 2472 */ 2473 if (error == 0 && (sense->flags & SSD_ILI)) { 2474 if (info < 0) { 2475 xpt_print(csio->ccb_h.path, toobig, 2476 csio->dxfer_len - info); 2477 csio->resid = csio->dxfer_len; 2478 error = EIO; 2479 } else { 2480 csio->resid = resid; 2481 if (softc->flags & SA_FLAG_FIXED) { 2482 softc->flags |= SA_FLAG_EIO_PENDING; 2483 } 2484 /* 2485 * Bump the block number if we hadn't seen a filemark. 2486 * Do this independent of errors (we've moved anyway). 2487 */ 2488 if ((sense->flags & SSD_FILEMARK) == 0) { 2489 if (softc->blkno != (daddr_t) -1) { 2490 softc->blkno++; 2491 csio->ccb_h.ccb_pflags |= 2492 SA_POSITION_UPDATED; 2493 } 2494 } 2495 } 2496 } 2497 2498 if (error <= 0) { 2499 /* 2500 * Unfreeze the queue if frozen as we're not returning anything 2501 * to our waiters that would indicate an I/O error has occurred 2502 * (yet). 2503 */ 2504 QFRLS(ccb); 2505 error = 0; 2506 } 2507 return (error); 2508 } 2509 2510 static int 2511 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2512 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2513 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2514 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2515 sa_comp_t *tcs) 2516 { 2517 union ccb *ccb; 2518 void *mode_buffer; 2519 struct scsi_mode_header_6 *mode_hdr; 2520 struct scsi_mode_blk_desc *mode_blk; 2521 int mode_buffer_len; 2522 struct sa_softc *softc; 2523 u_int8_t cpage; 2524 int error; 2525 cam_status status; 2526 2527 softc = (struct sa_softc *)periph->softc; 2528 ccb = cam_periph_getccb(periph, 1); 2529 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2530 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2531 else 2532 cpage = SA_DATA_COMPRESSION_PAGE; 2533 2534 retry: 2535 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2536 2537 if (params_to_get & SA_PARAM_COMPRESSION) { 2538 if (softc->quirks & SA_QUIRK_NOCOMP) { 2539 *comp_supported = FALSE; 2540 params_to_get &= ~SA_PARAM_COMPRESSION; 2541 } else 2542 mode_buffer_len += sizeof (sa_comp_t); 2543 } 2544 2545 /* XXX Fix M_NOWAIT */ 2546 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2547 if (mode_buffer == NULL) { 2548 xpt_release_ccb(ccb); 2549 return (ENOMEM); 2550 } 2551 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2552 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2553 2554 /* it is safe to retry this */ 2555 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2556 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2557 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2558 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2559 2560 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2561 softc->device_stats); 2562 QFRLS(ccb); 2563 2564 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2565 2566 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2567 /* 2568 * Hmm. Let's see if we can try another page... 2569 * If we've already done that, give up on compression 2570 * for this device and remember this for the future 2571 * and attempt the request without asking for compression 2572 * info. 2573 */ 2574 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2575 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2576 goto retry; 2577 } 2578 softc->quirks |= SA_QUIRK_NOCOMP; 2579 free(mode_buffer, M_SCSISA); 2580 goto retry; 2581 } else if (status == CAM_SCSI_STATUS_ERROR) { 2582 /* Tell the user about the fatal error. */ 2583 scsi_sense_print(&ccb->csio); 2584 goto sagetparamsexit; 2585 } 2586 2587 /* 2588 * If the user only wants the compression information, and 2589 * the device doesn't send back the block descriptor, it's 2590 * no big deal. If the user wants more than just 2591 * compression, though, and the device doesn't pass back the 2592 * block descriptor, we need to send another mode sense to 2593 * get the block descriptor. 2594 */ 2595 if ((mode_hdr->blk_desc_len == 0) && 2596 (params_to_get & SA_PARAM_COMPRESSION) && 2597 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2598 2599 /* 2600 * Decrease the mode buffer length by the size of 2601 * the compression page, to make sure the data 2602 * there doesn't get overwritten. 2603 */ 2604 mode_buffer_len -= sizeof (sa_comp_t); 2605 2606 /* 2607 * Now move the compression page that we presumably 2608 * got back down the memory chunk a little bit so 2609 * it doesn't get spammed. 2610 */ 2611 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2612 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2613 2614 /* 2615 * Now, we issue another mode sense and just ask 2616 * for the block descriptor, etc. 2617 */ 2618 2619 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2620 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2621 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2622 SCSIOP_TIMEOUT); 2623 2624 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2625 softc->device_stats); 2626 QFRLS(ccb); 2627 2628 if (error != 0) 2629 goto sagetparamsexit; 2630 } 2631 2632 if (params_to_get & SA_PARAM_BLOCKSIZE) 2633 *blocksize = scsi_3btoul(mode_blk->blklen); 2634 2635 if (params_to_get & SA_PARAM_NUMBLOCKS) 2636 *numblocks = scsi_3btoul(mode_blk->nblocks); 2637 2638 if (params_to_get & SA_PARAM_BUFF_MODE) 2639 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2640 2641 if (params_to_get & SA_PARAM_DENSITY) 2642 *density = mode_blk->density; 2643 2644 if (params_to_get & SA_PARAM_WP) 2645 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2646 2647 if (params_to_get & SA_PARAM_SPEED) 2648 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2649 2650 if (params_to_get & SA_PARAM_COMPRESSION) { 2651 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2652 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2653 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2654 *comp_supported = 2655 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2656 *comp_enabled = 2657 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2658 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2659 } else { 2660 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2661 /* 2662 * We don't really know whether this device supports 2663 * Data Compression if the algorithm field is 2664 * zero. Just say we do. 2665 */ 2666 *comp_supported = TRUE; 2667 *comp_enabled = 2668 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2669 *comp_algorithm = cp->sel_comp_alg; 2670 } 2671 if (tcs != NULL) 2672 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2673 } 2674 2675 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2676 int idx; 2677 char *xyz = mode_buffer; 2678 xpt_print_path(periph->path); 2679 printf("Mode Sense Data="); 2680 for (idx = 0; idx < mode_buffer_len; idx++) 2681 printf(" 0x%02x", xyz[idx] & 0xff); 2682 printf("\n"); 2683 } 2684 2685 sagetparamsexit: 2686 2687 xpt_release_ccb(ccb); 2688 free(mode_buffer, M_SCSISA); 2689 return (error); 2690 } 2691 2692 /* 2693 * The purpose of this function is to set one of four different parameters 2694 * for a tape drive: 2695 * - blocksize 2696 * - density 2697 * - compression / compression algorithm 2698 * - buffering mode 2699 * 2700 * The assumption is that this will be called from saioctl(), and therefore 2701 * from a process context. Thus the waiting malloc calls below. If that 2702 * assumption ever changes, the malloc calls should be changed to be 2703 * NOWAIT mallocs. 2704 * 2705 * Any or all of the four parameters may be set when this function is 2706 * called. It should handle setting more than one parameter at once. 2707 */ 2708 static int 2709 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2710 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2711 u_int32_t sense_flags) 2712 { 2713 struct sa_softc *softc; 2714 u_int32_t current_blocksize; 2715 u_int32_t current_calg; 2716 u_int8_t current_density; 2717 u_int8_t current_speed; 2718 int comp_enabled, comp_supported; 2719 void *mode_buffer; 2720 int mode_buffer_len; 2721 struct scsi_mode_header_6 *mode_hdr; 2722 struct scsi_mode_blk_desc *mode_blk; 2723 sa_comp_t *ccomp, *cpage; 2724 int buff_mode; 2725 union ccb *ccb = NULL; 2726 int error; 2727 2728 softc = (struct sa_softc *)periph->softc; 2729 2730 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2731 if (ccomp == NULL) 2732 return (ENOMEM); 2733 2734 /* 2735 * Since it doesn't make sense to set the number of blocks, or 2736 * write protection, we won't try to get the current value. We 2737 * always want to get the blocksize, so we can set it back to the 2738 * proper value. 2739 */ 2740 error = sagetparams(periph, 2741 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2742 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2743 ¤t_speed, &comp_supported, &comp_enabled, 2744 ¤t_calg, ccomp); 2745 2746 if (error != 0) { 2747 free(ccomp, M_SCSISA); 2748 return (error); 2749 } 2750 2751 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2752 if (params_to_set & SA_PARAM_COMPRESSION) 2753 mode_buffer_len += sizeof (sa_comp_t); 2754 2755 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2756 if (mode_buffer == NULL) { 2757 free(ccomp, M_SCSISA); 2758 return (ENOMEM); 2759 } 2760 2761 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2762 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2763 2764 ccb = cam_periph_getccb(periph, 1); 2765 2766 retry: 2767 2768 if (params_to_set & SA_PARAM_COMPRESSION) { 2769 if (mode_blk) { 2770 cpage = (sa_comp_t *)&mode_blk[1]; 2771 } else { 2772 cpage = (sa_comp_t *)&mode_hdr[1]; 2773 } 2774 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2775 cpage->hdr.pagecode &= ~0x80; 2776 } else 2777 cpage = NULL; 2778 2779 /* 2780 * If the caller wants us to set the blocksize, use the one they 2781 * pass in. Otherwise, use the blocksize we got back from the 2782 * mode select above. 2783 */ 2784 if (mode_blk) { 2785 if (params_to_set & SA_PARAM_BLOCKSIZE) 2786 scsi_ulto3b(blocksize, mode_blk->blklen); 2787 else 2788 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2789 2790 /* 2791 * Set density if requested, else preserve old density. 2792 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2793 * devices, else density we've latched up in our softc. 2794 */ 2795 if (params_to_set & SA_PARAM_DENSITY) { 2796 mode_blk->density = density; 2797 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2798 mode_blk->density = SCSI_SAME_DENSITY; 2799 } else { 2800 mode_blk->density = softc->media_density; 2801 } 2802 } 2803 2804 /* 2805 * For mode selects, these two fields must be zero. 2806 */ 2807 mode_hdr->data_length = 0; 2808 mode_hdr->medium_type = 0; 2809 2810 /* set the speed to the current value */ 2811 mode_hdr->dev_spec = current_speed; 2812 2813 /* if set, set single-initiator buffering mode */ 2814 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2815 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2816 } 2817 2818 if (mode_blk) 2819 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2820 else 2821 mode_hdr->blk_desc_len = 0; 2822 2823 /* 2824 * First, if the user wants us to set the compression algorithm or 2825 * just turn compression on, check to make sure that this drive 2826 * supports compression. 2827 */ 2828 if (params_to_set & SA_PARAM_COMPRESSION) { 2829 /* 2830 * If the compression algorithm is 0, disable compression. 2831 * If the compression algorithm is non-zero, enable 2832 * compression and set the compression type to the 2833 * specified compression algorithm, unless the algorithm is 2834 * MT_COMP_ENABLE. In that case, we look at the 2835 * compression algorithm that is currently set and if it is 2836 * non-zero, we leave it as-is. If it is zero, and we have 2837 * saved a compression algorithm from a time when 2838 * compression was enabled before, set the compression to 2839 * the saved value. 2840 */ 2841 switch (ccomp->hdr.pagecode & ~0x80) { 2842 case SA_DEVICE_CONFIGURATION_PAGE: 2843 { 2844 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2845 if (calg == 0) { 2846 dcp->sel_comp_alg = SA_COMP_NONE; 2847 break; 2848 } 2849 if (calg != MT_COMP_ENABLE) { 2850 dcp->sel_comp_alg = calg; 2851 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2852 softc->saved_comp_algorithm != 0) { 2853 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2854 } 2855 break; 2856 } 2857 case SA_DATA_COMPRESSION_PAGE: 2858 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2859 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2860 if (calg == 0) { 2861 /* 2862 * Disable compression, but leave the 2863 * decompression and the capability bit 2864 * alone. 2865 */ 2866 dcp->dce_and_dcc = SA_DCP_DCC; 2867 dcp->dde_and_red |= SA_DCP_DDE; 2868 break; 2869 } 2870 /* enable compression && decompression */ 2871 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2872 dcp->dde_and_red |= SA_DCP_DDE; 2873 /* 2874 * If there, use compression algorithm from caller. 2875 * Otherwise, if there's a saved compression algorithm 2876 * and there is no current algorithm, use the saved 2877 * algorithm. Else parrot back what we got and hope 2878 * for the best. 2879 */ 2880 if (calg != MT_COMP_ENABLE) { 2881 scsi_ulto4b(calg, dcp->comp_algorithm); 2882 scsi_ulto4b(calg, dcp->decomp_algorithm); 2883 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2884 softc->saved_comp_algorithm != 0) { 2885 scsi_ulto4b(softc->saved_comp_algorithm, 2886 dcp->comp_algorithm); 2887 scsi_ulto4b(softc->saved_comp_algorithm, 2888 dcp->decomp_algorithm); 2889 } 2890 break; 2891 } 2892 /* 2893 * Compression does not appear to be supported- 2894 * at least via the DATA COMPRESSION page. It 2895 * would be too much to ask us to believe that 2896 * the page itself is supported, but incorrectly 2897 * reports an ability to manipulate data compression, 2898 * so we'll assume that this device doesn't support 2899 * compression. We can just fall through for that. 2900 */ 2901 /* FALLTHROUGH */ 2902 default: 2903 /* 2904 * The drive doesn't seem to support compression, 2905 * so turn off the set compression bit. 2906 */ 2907 params_to_set &= ~SA_PARAM_COMPRESSION; 2908 xpt_print(periph->path, 2909 "device does not seem to support compression\n"); 2910 2911 /* 2912 * If that was the only thing the user wanted us to set, 2913 * clean up allocated resources and return with 2914 * 'operation not supported'. 2915 */ 2916 if (params_to_set == SA_PARAM_NONE) { 2917 free(mode_buffer, M_SCSISA); 2918 xpt_release_ccb(ccb); 2919 return (ENODEV); 2920 } 2921 2922 /* 2923 * That wasn't the only thing the user wanted us to set. 2924 * So, decrease the stated mode buffer length by the 2925 * size of the compression mode page. 2926 */ 2927 mode_buffer_len -= sizeof(sa_comp_t); 2928 } 2929 } 2930 2931 /* It is safe to retry this operation */ 2932 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2933 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2934 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2935 2936 error = cam_periph_runccb(ccb, saerror, 0, 2937 sense_flags, softc->device_stats); 2938 QFRLS(ccb); 2939 2940 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2941 int idx; 2942 char *xyz = mode_buffer; 2943 xpt_print_path(periph->path); 2944 printf("Err%d, Mode Select Data=", error); 2945 for (idx = 0; idx < mode_buffer_len; idx++) 2946 printf(" 0x%02x", xyz[idx] & 0xff); 2947 printf("\n"); 2948 } 2949 2950 2951 if (error) { 2952 /* 2953 * If we can, try without setting density/blocksize. 2954 */ 2955 if (mode_blk) { 2956 if ((params_to_set & 2957 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2958 mode_blk = NULL; 2959 goto retry; 2960 } 2961 } else { 2962 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2963 cpage = (sa_comp_t *)&mode_blk[1]; 2964 } 2965 2966 /* 2967 * If we were setting the blocksize, and that failed, we 2968 * want to set it to its original value. If we weren't 2969 * setting the blocksize, we don't want to change it. 2970 */ 2971 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2972 2973 /* 2974 * Set density if requested, else preserve old density. 2975 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2976 * devices, else density we've latched up in our softc. 2977 */ 2978 if (params_to_set & SA_PARAM_DENSITY) { 2979 mode_blk->density = current_density; 2980 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2981 mode_blk->density = SCSI_SAME_DENSITY; 2982 } else { 2983 mode_blk->density = softc->media_density; 2984 } 2985 2986 if (params_to_set & SA_PARAM_COMPRESSION) 2987 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2988 2989 /* 2990 * The retry count is the only CCB field that might have been 2991 * changed that we care about, so reset it back to 1. 2992 */ 2993 ccb->ccb_h.retry_count = 1; 2994 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2995 softc->device_stats); 2996 QFRLS(ccb); 2997 } 2998 2999 xpt_release_ccb(ccb); 3000 3001 if (ccomp != NULL) 3002 free(ccomp, M_SCSISA); 3003 3004 if (params_to_set & SA_PARAM_COMPRESSION) { 3005 if (error) { 3006 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3007 /* 3008 * Even if we get an error setting compression, 3009 * do not say that we don't support it. We could 3010 * have been wrong, or it may be media specific. 3011 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3012 */ 3013 softc->saved_comp_algorithm = softc->comp_algorithm; 3014 softc->comp_algorithm = 0; 3015 } else { 3016 softc->flags |= SA_FLAG_COMP_ENABLED; 3017 softc->comp_algorithm = calg; 3018 } 3019 } 3020 3021 free(mode_buffer, M_SCSISA); 3022 return (error); 3023 } 3024 3025 static void 3026 saprevent(struct cam_periph *periph, int action) 3027 { 3028 struct sa_softc *softc; 3029 union ccb *ccb; 3030 int error, sf; 3031 3032 softc = (struct sa_softc *)periph->softc; 3033 3034 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3035 return; 3036 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3037 return; 3038 3039 /* 3040 * We can be quiet about illegal requests. 3041 */ 3042 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3043 sf = 0; 3044 } else 3045 sf = SF_QUIET_IR; 3046 3047 ccb = cam_periph_getccb(periph, 1); 3048 3049 /* It is safe to retry this operation */ 3050 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3051 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3052 3053 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3054 QFRLS(ccb); 3055 if (error == 0) { 3056 if (action == PR_ALLOW) 3057 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3058 else 3059 softc->flags |= SA_FLAG_TAPE_LOCKED; 3060 } 3061 3062 xpt_release_ccb(ccb); 3063 } 3064 3065 static int 3066 sarewind(struct cam_periph *periph) 3067 { 3068 union ccb *ccb; 3069 struct sa_softc *softc; 3070 int error; 3071 3072 softc = (struct sa_softc *)periph->softc; 3073 3074 ccb = cam_periph_getccb(periph, 1); 3075 3076 /* It is safe to retry this operation */ 3077 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3078 SSD_FULL_SIZE, REWIND_TIMEOUT); 3079 3080 softc->dsreg = MTIO_DSREG_REW; 3081 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3082 softc->dsreg = MTIO_DSREG_REST; 3083 3084 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3085 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3086 3087 xpt_release_ccb(ccb); 3088 if (error == 0) 3089 softc->fileno = softc->blkno = (daddr_t) 0; 3090 else 3091 softc->fileno = softc->blkno = (daddr_t) -1; 3092 return (error); 3093 } 3094 3095 static int 3096 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3097 { 3098 union ccb *ccb; 3099 struct sa_softc *softc; 3100 int error; 3101 3102 softc = (struct sa_softc *)periph->softc; 3103 3104 ccb = cam_periph_getccb(periph, 1); 3105 3106 /* This cannot be retried */ 3107 3108 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3109 SSD_FULL_SIZE, SPACE_TIMEOUT); 3110 3111 /* 3112 * Clear residual because we will be using it. 3113 */ 3114 softc->last_ctl_resid = 0; 3115 3116 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3117 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3118 softc->dsreg = MTIO_DSREG_REST; 3119 3120 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3121 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3122 3123 xpt_release_ccb(ccb); 3124 3125 /* 3126 * If a spacing operation has failed, we need to invalidate 3127 * this mount. 3128 * 3129 * If the spacing operation was setmarks or to end of recorded data, 3130 * we no longer know our relative position. 3131 * 3132 * If the spacing operations was spacing files in reverse, we 3133 * take account of the residual, but still check against less 3134 * than zero- if we've gone negative, we must have hit BOT. 3135 * 3136 * If the spacing operations was spacing records in reverse and 3137 * we have a residual, we've either hit BOT or hit a filemark. 3138 * In the former case, we know our new record number (0). In 3139 * the latter case, we have absolutely no idea what the real 3140 * record number is- we've stopped between the end of the last 3141 * record in the previous file and the filemark that stopped 3142 * our spacing backwards. 3143 */ 3144 if (error) { 3145 softc->fileno = softc->blkno = (daddr_t) -1; 3146 } else if (code == SS_SETMARKS || code == SS_EOD) { 3147 softc->fileno = softc->blkno = (daddr_t) -1; 3148 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3149 softc->fileno += (count - softc->last_ctl_resid); 3150 if (softc->fileno < 0) /* we must of hit BOT */ 3151 softc->fileno = 0; 3152 softc->blkno = 0; 3153 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3154 softc->blkno += (count - softc->last_ctl_resid); 3155 if (count < 0) { 3156 if (softc->last_ctl_resid || softc->blkno < 0) { 3157 if (softc->fileno == 0) { 3158 softc->blkno = 0; 3159 } else { 3160 softc->blkno = (daddr_t) -1; 3161 } 3162 } 3163 } 3164 } 3165 return (error); 3166 } 3167 3168 static int 3169 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3170 { 3171 union ccb *ccb; 3172 struct sa_softc *softc; 3173 int error, nwm = 0; 3174 3175 softc = (struct sa_softc *)periph->softc; 3176 if (softc->open_rdonly) 3177 return (EBADF); 3178 3179 ccb = cam_periph_getccb(periph, 1); 3180 /* 3181 * Clear residual because we will be using it. 3182 */ 3183 softc->last_ctl_resid = 0; 3184 3185 softc->dsreg = MTIO_DSREG_FMK; 3186 /* this *must* not be retried */ 3187 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3188 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3189 softc->dsreg = MTIO_DSREG_REST; 3190 3191 3192 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3193 3194 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3195 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3196 3197 if (error == 0 && nmarks) { 3198 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3199 nwm = nmarks - softc->last_ctl_resid; 3200 softc->filemarks += nwm; 3201 } 3202 3203 xpt_release_ccb(ccb); 3204 3205 /* 3206 * Update relative positions (if we're doing that). 3207 */ 3208 if (error) { 3209 softc->fileno = softc->blkno = (daddr_t) -1; 3210 } else if (softc->fileno != (daddr_t) -1) { 3211 softc->fileno += nwm; 3212 softc->blkno = 0; 3213 } 3214 return (error); 3215 } 3216 3217 static int 3218 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3219 { 3220 struct scsi_tape_position_data loc; 3221 union ccb *ccb; 3222 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3223 int error; 3224 3225 /* 3226 * We try and flush any buffered writes here if we were writing 3227 * and we're trying to get hardware block position. It eats 3228 * up performance substantially, but I'm wary of drive firmware. 3229 * 3230 * I think that *logical* block position is probably okay- 3231 * but hardware block position might have to wait for data 3232 * to hit media to be valid. Caveat Emptor. 3233 */ 3234 3235 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3236 error = sawritefilemarks(periph, 0, 0); 3237 if (error && error != EACCES) 3238 return (error); 3239 } 3240 3241 ccb = cam_periph_getccb(periph, 1); 3242 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3243 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3244 softc->dsreg = MTIO_DSREG_RBSY; 3245 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3246 softc->dsreg = MTIO_DSREG_REST; 3247 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3248 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3249 3250 if (error == 0) { 3251 if (loc.flags & SA_RPOS_UNCERTAIN) { 3252 error = EINVAL; /* nothing is certain */ 3253 } else { 3254 *blkptr = scsi_4btoul(loc.firstblk); 3255 } 3256 } 3257 3258 xpt_release_ccb(ccb); 3259 return (error); 3260 } 3261 3262 static int 3263 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3264 { 3265 union ccb *ccb; 3266 struct sa_softc *softc; 3267 int error; 3268 3269 /* 3270 * We used to try and flush any buffered writes here. 3271 * Now we push this onto user applications to either 3272 * flush the pending writes themselves (via a zero count 3273 * WRITE FILEMARKS command) or they can trust their tape 3274 * drive to do this correctly for them. 3275 */ 3276 3277 softc = (struct sa_softc *)periph->softc; 3278 ccb = cam_periph_getccb(periph, 1); 3279 3280 3281 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3282 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3283 3284 3285 softc->dsreg = MTIO_DSREG_POS; 3286 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3287 softc->dsreg = MTIO_DSREG_REST; 3288 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3289 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3290 xpt_release_ccb(ccb); 3291 /* 3292 * Note relative file && block number position as now unknown. 3293 */ 3294 softc->fileno = softc->blkno = (daddr_t) -1; 3295 return (error); 3296 } 3297 3298 static int 3299 saretension(struct cam_periph *periph) 3300 { 3301 union ccb *ccb; 3302 struct sa_softc *softc; 3303 int error; 3304 3305 softc = (struct sa_softc *)periph->softc; 3306 3307 ccb = cam_periph_getccb(periph, 1); 3308 3309 /* It is safe to retry this operation */ 3310 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3311 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3312 3313 softc->dsreg = MTIO_DSREG_TEN; 3314 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3315 softc->dsreg = MTIO_DSREG_REST; 3316 3317 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3318 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3319 xpt_release_ccb(ccb); 3320 if (error == 0) 3321 softc->fileno = softc->blkno = (daddr_t) 0; 3322 else 3323 softc->fileno = softc->blkno = (daddr_t) -1; 3324 return (error); 3325 } 3326 3327 static int 3328 sareservereleaseunit(struct cam_periph *periph, int reserve) 3329 { 3330 union ccb *ccb; 3331 struct sa_softc *softc; 3332 int error; 3333 3334 softc = (struct sa_softc *)periph->softc; 3335 ccb = cam_periph_getccb(periph, 1); 3336 3337 /* It is safe to retry this operation */ 3338 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3339 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3340 softc->dsreg = MTIO_DSREG_RBSY; 3341 error = cam_periph_runccb(ccb, saerror, 0, 3342 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3343 softc->dsreg = MTIO_DSREG_REST; 3344 QFRLS(ccb); 3345 xpt_release_ccb(ccb); 3346 3347 /* 3348 * If the error was Illegal Request, then the device doesn't support 3349 * RESERVE/RELEASE. This is not an error. 3350 */ 3351 if (error == EINVAL) { 3352 error = 0; 3353 } 3354 3355 return (error); 3356 } 3357 3358 static int 3359 saloadunload(struct cam_periph *periph, int load) 3360 { 3361 union ccb *ccb; 3362 struct sa_softc *softc; 3363 int error; 3364 3365 softc = (struct sa_softc *)periph->softc; 3366 3367 ccb = cam_periph_getccb(periph, 1); 3368 3369 /* It is safe to retry this operation */ 3370 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3371 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3372 3373 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3374 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3375 softc->dsreg = MTIO_DSREG_REST; 3376 QFRLS(ccb); 3377 xpt_release_ccb(ccb); 3378 3379 if (error || load == 0) 3380 softc->fileno = softc->blkno = (daddr_t) -1; 3381 else if (error == 0) 3382 softc->fileno = softc->blkno = (daddr_t) 0; 3383 return (error); 3384 } 3385 3386 static int 3387 saerase(struct cam_periph *periph, int longerase) 3388 { 3389 3390 union ccb *ccb; 3391 struct sa_softc *softc; 3392 int error; 3393 3394 softc = (struct sa_softc *)periph->softc; 3395 if (softc->open_rdonly) 3396 return (EBADF); 3397 3398 ccb = cam_periph_getccb(periph, 1); 3399 3400 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3401 SSD_FULL_SIZE, ERASE_TIMEOUT); 3402 3403 softc->dsreg = MTIO_DSREG_ZER; 3404 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3405 softc->dsreg = MTIO_DSREG_REST; 3406 3407 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3408 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3409 xpt_release_ccb(ccb); 3410 return (error); 3411 } 3412 3413 #endif /* _KERNEL */ 3414 3415 /* 3416 * Read tape block limits command. 3417 */ 3418 void 3419 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3420 void (*cbfcnp)(struct cam_periph *, union ccb *), 3421 u_int8_t tag_action, 3422 struct scsi_read_block_limits_data *rlimit_buf, 3423 u_int8_t sense_len, u_int32_t timeout) 3424 { 3425 struct scsi_read_block_limits *scsi_cmd; 3426 3427 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3428 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3429 sizeof(*scsi_cmd), timeout); 3430 3431 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3432 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3433 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3434 } 3435 3436 void 3437 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3438 void (*cbfcnp)(struct cam_periph *, union ccb *), 3439 u_int8_t tag_action, int readop, int sli, 3440 int fixed, u_int32_t length, u_int8_t *data_ptr, 3441 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3442 { 3443 struct scsi_sa_rw *scsi_cmd; 3444 3445 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3446 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3447 scsi_cmd->sli_fixed = 0; 3448 if (sli && readop) 3449 scsi_cmd->sli_fixed |= SAR_SLI; 3450 if (fixed) 3451 scsi_cmd->sli_fixed |= SARW_FIXED; 3452 scsi_ulto3b(length, scsi_cmd->length); 3453 scsi_cmd->control = 0; 3454 3455 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3456 tag_action, data_ptr, dxfer_len, sense_len, 3457 sizeof(*scsi_cmd), timeout); 3458 } 3459 3460 void 3461 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3462 void (*cbfcnp)(struct cam_periph *, union ccb *), 3463 u_int8_t tag_action, int immediate, int eot, 3464 int reten, int load, u_int8_t sense_len, 3465 u_int32_t timeout) 3466 { 3467 struct scsi_load_unload *scsi_cmd; 3468 3469 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3470 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3471 scsi_cmd->opcode = LOAD_UNLOAD; 3472 if (immediate) 3473 scsi_cmd->immediate = SLU_IMMED; 3474 if (eot) 3475 scsi_cmd->eot_reten_load |= SLU_EOT; 3476 if (reten) 3477 scsi_cmd->eot_reten_load |= SLU_RETEN; 3478 if (load) 3479 scsi_cmd->eot_reten_load |= SLU_LOAD; 3480 3481 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3482 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3483 } 3484 3485 void 3486 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3487 void (*cbfcnp)(struct cam_periph *, union ccb *), 3488 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3489 u_int32_t timeout) 3490 { 3491 struct scsi_rewind *scsi_cmd; 3492 3493 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3494 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3495 scsi_cmd->opcode = REWIND; 3496 if (immediate) 3497 scsi_cmd->immediate = SREW_IMMED; 3498 3499 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3500 0, sense_len, sizeof(*scsi_cmd), timeout); 3501 } 3502 3503 void 3504 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3505 void (*cbfcnp)(struct cam_periph *, union ccb *), 3506 u_int8_t tag_action, scsi_space_code code, 3507 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3508 { 3509 struct scsi_space *scsi_cmd; 3510 3511 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3512 scsi_cmd->opcode = SPACE; 3513 scsi_cmd->code = code; 3514 scsi_ulto3b(count, scsi_cmd->count); 3515 scsi_cmd->control = 0; 3516 3517 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3518 0, sense_len, sizeof(*scsi_cmd), timeout); 3519 } 3520 3521 void 3522 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3523 void (*cbfcnp)(struct cam_periph *, union ccb *), 3524 u_int8_t tag_action, int immediate, int setmark, 3525 u_int32_t num_marks, u_int8_t sense_len, 3526 u_int32_t timeout) 3527 { 3528 struct scsi_write_filemarks *scsi_cmd; 3529 3530 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3531 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3532 scsi_cmd->opcode = WRITE_FILEMARKS; 3533 if (immediate) 3534 scsi_cmd->byte2 |= SWFMRK_IMMED; 3535 if (setmark) 3536 scsi_cmd->byte2 |= SWFMRK_WSMK; 3537 3538 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3539 3540 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3541 0, sense_len, sizeof(*scsi_cmd), timeout); 3542 } 3543 3544 /* 3545 * The reserve and release unit commands differ only by their opcodes. 3546 */ 3547 void 3548 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3549 void (*cbfcnp)(struct cam_periph *, union ccb *), 3550 u_int8_t tag_action, int third_party, 3551 int third_party_id, u_int8_t sense_len, 3552 u_int32_t timeout, int reserve) 3553 { 3554 struct scsi_reserve_release_unit *scsi_cmd; 3555 3556 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3557 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3558 3559 if (reserve) 3560 scsi_cmd->opcode = RESERVE_UNIT; 3561 else 3562 scsi_cmd->opcode = RELEASE_UNIT; 3563 3564 if (third_party) { 3565 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3566 scsi_cmd->lun_thirdparty |= 3567 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3568 } 3569 3570 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3571 0, sense_len, sizeof(*scsi_cmd), timeout); 3572 } 3573 3574 void 3575 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3576 void (*cbfcnp)(struct cam_periph *, union ccb *), 3577 u_int8_t tag_action, int immediate, int long_erase, 3578 u_int8_t sense_len, u_int32_t timeout) 3579 { 3580 struct scsi_erase *scsi_cmd; 3581 3582 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3583 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3584 3585 scsi_cmd->opcode = ERASE; 3586 3587 if (immediate) 3588 scsi_cmd->lun_imm_long |= SE_IMMED; 3589 3590 if (long_erase) 3591 scsi_cmd->lun_imm_long |= SE_LONG; 3592 3593 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3594 0, sense_len, sizeof(*scsi_cmd), timeout); 3595 } 3596 3597 /* 3598 * Read Tape Position command. 3599 */ 3600 void 3601 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3602 void (*cbfcnp)(struct cam_periph *, union ccb *), 3603 u_int8_t tag_action, int hardsoft, 3604 struct scsi_tape_position_data *sbp, 3605 u_int8_t sense_len, u_int32_t timeout) 3606 { 3607 struct scsi_tape_read_position *scmd; 3608 3609 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3610 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3611 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3612 bzero(scmd, sizeof(*scmd)); 3613 scmd->opcode = READ_POSITION; 3614 scmd->byte1 = hardsoft; 3615 } 3616 3617 /* 3618 * Set Tape Position command. 3619 */ 3620 void 3621 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3622 void (*cbfcnp)(struct cam_periph *, union ccb *), 3623 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3624 u_int8_t sense_len, u_int32_t timeout) 3625 { 3626 struct scsi_tape_locate *scmd; 3627 3628 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3629 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3630 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3631 bzero(scmd, sizeof(*scmd)); 3632 scmd->opcode = LOCATE; 3633 if (hardsoft) 3634 scmd->byte1 |= SA_SPOS_BT; 3635 scsi_ulto4b(blkno, scmd->blkaddr); 3636 } 3637