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 caddr_t match; 1435 int i; 1436 1437 cgd = (struct ccb_getdev *)arg; 1438 if (periph == NULL) { 1439 printf("saregister: periph was NULL!!\n"); 1440 return (CAM_REQ_CMP_ERR); 1441 } 1442 1443 if (cgd == NULL) { 1444 printf("saregister: no getdev CCB, can't register device\n"); 1445 return (CAM_REQ_CMP_ERR); 1446 } 1447 1448 softc = (struct sa_softc *) 1449 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1450 if (softc == NULL) { 1451 printf("saregister: Unable to probe new device. " 1452 "Unable to allocate softc\n"); 1453 return (CAM_REQ_CMP_ERR); 1454 } 1455 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1456 softc->state = SA_STATE_NORMAL; 1457 softc->fileno = (daddr_t) -1; 1458 softc->blkno = (daddr_t) -1; 1459 1460 bioq_init(&softc->bio_queue); 1461 periph->softc = softc; 1462 1463 /* 1464 * See if this device has any quirks. 1465 */ 1466 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1467 (caddr_t)sa_quirk_table, 1468 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1469 sizeof(*sa_quirk_table), scsi_inquiry_match); 1470 1471 if (match != NULL) { 1472 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1473 softc->last_media_blksize = 1474 ((struct sa_quirk_entry *)match)->prefblk; 1475 #ifdef CAMDEBUG 1476 xpt_print(periph->path, "found quirk entry %d\n", 1477 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1478 #endif 1479 } else 1480 softc->quirks = SA_QUIRK_NONE; 1481 1482 /* 1483 * The SA driver supports a blocksize, but we don't know the 1484 * blocksize until we media is inserted. So, set a flag to 1485 * indicate that the blocksize is unavailable right now. 1486 */ 1487 cam_periph_unlock(periph); 1488 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1489 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1490 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1491 1492 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1493 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1494 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1495 softc->devs.ctl_dev->si_drv1 = periph; 1496 1497 for (i = 0; i < SA_NUM_MODES; i++) { 1498 1499 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1500 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1501 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1502 periph->periph_name, periph->unit_number, i); 1503 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1504 1505 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1506 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1507 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1508 periph->periph_name, periph->unit_number, i); 1509 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1510 1511 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1512 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1513 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1514 periph->periph_name, periph->unit_number, i); 1515 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1516 1517 /* 1518 * Make the (well known) aliases for the first mode. 1519 */ 1520 if (i == 0) { 1521 struct cdev *alias; 1522 1523 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1524 "%s%d", periph->periph_name, periph->unit_number); 1525 alias->si_drv1 = periph; 1526 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1527 "n%s%d", periph->periph_name, periph->unit_number); 1528 alias->si_drv1 = periph; 1529 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1530 "e%s%d", periph->periph_name, periph->unit_number); 1531 alias->si_drv1 = periph; 1532 } 1533 } 1534 cam_periph_lock(periph); 1535 1536 /* 1537 * Add an async callback so that we get 1538 * notified if this device goes away. 1539 */ 1540 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1541 1542 xpt_announce_periph(periph, NULL); 1543 1544 return (CAM_REQ_CMP); 1545 } 1546 1547 static void 1548 sastart(struct cam_periph *periph, union ccb *start_ccb) 1549 { 1550 struct sa_softc *softc; 1551 1552 softc = (struct sa_softc *)periph->softc; 1553 1554 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1555 1556 1557 switch (softc->state) { 1558 case SA_STATE_NORMAL: 1559 { 1560 /* Pull a buffer from the queue and get going on it */ 1561 struct bio *bp; 1562 1563 /* 1564 * See if there is a buf with work for us to do.. 1565 */ 1566 bp = bioq_first(&softc->bio_queue); 1567 if (periph->immediate_priority <= periph->pinfo.priority) { 1568 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1569 ("queuing for immediate ccb\n")); 1570 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1571 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1572 periph_links.sle); 1573 periph->immediate_priority = CAM_PRIORITY_NONE; 1574 wakeup(&periph->ccb_list); 1575 } else if (bp == NULL) { 1576 xpt_release_ccb(start_ccb); 1577 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1578 struct bio *done_bp; 1579 again: 1580 softc->queue_count--; 1581 bioq_remove(&softc->bio_queue, bp); 1582 bp->bio_resid = bp->bio_bcount; 1583 done_bp = bp; 1584 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1585 /* 1586 * We now just clear errors in this case 1587 * and let the residual be the notifier. 1588 */ 1589 bp->bio_error = 0; 1590 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1591 /* 1592 * This can only happen if we're reading 1593 * in fixed length mode. In this case, 1594 * we dump the rest of the list the 1595 * same way. 1596 */ 1597 bp->bio_error = 0; 1598 if (bioq_first(&softc->bio_queue) != NULL) { 1599 biodone(done_bp); 1600 goto again; 1601 } 1602 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1603 bp->bio_error = EIO; 1604 bp->bio_flags |= BIO_ERROR; 1605 } 1606 bp = bioq_first(&softc->bio_queue); 1607 /* 1608 * Only if we have no other buffers queued up 1609 * do we clear the pending error flag. 1610 */ 1611 if (bp == NULL) 1612 softc->flags &= ~SA_FLAG_ERR_PENDING; 1613 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1614 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1615 "%d more buffers queued up\n", 1616 (softc->flags & SA_FLAG_ERR_PENDING), 1617 (bp != NULL)? "not " : " ", softc->queue_count)); 1618 xpt_release_ccb(start_ccb); 1619 biodone(done_bp); 1620 } else { 1621 u_int32_t length; 1622 1623 bioq_remove(&softc->bio_queue, bp); 1624 softc->queue_count--; 1625 1626 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1627 if (softc->blk_shift != 0) { 1628 length = 1629 bp->bio_bcount >> softc->blk_shift; 1630 } else if (softc->media_blksize != 0) { 1631 length = bp->bio_bcount / 1632 softc->media_blksize; 1633 } else { 1634 bp->bio_error = EIO; 1635 xpt_print(periph->path, "zero blocksize" 1636 " for FIXED length writes?\n"); 1637 biodone(bp); 1638 break; 1639 } 1640 #if 0 1641 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1642 ("issuing a %d fixed record %s\n", 1643 length, (bp->bio_cmd == BIO_READ)? "read" : 1644 "write")); 1645 #endif 1646 } else { 1647 length = bp->bio_bcount; 1648 #if 0 1649 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1650 ("issuing a %d variable byte %s\n", 1651 length, (bp->bio_cmd == BIO_READ)? "read" : 1652 "write")); 1653 #endif 1654 } 1655 devstat_start_transaction_bio(softc->device_stats, bp); 1656 /* 1657 * Some people have theorized that we should 1658 * suppress illegal length indication if we are 1659 * running in variable block mode so that we don't 1660 * have to request sense every time our requested 1661 * block size is larger than the written block. 1662 * The residual information from the ccb allows 1663 * us to identify this situation anyway. The only 1664 * problem with this is that we will not get 1665 * information about blocks that are larger than 1666 * our read buffer unless we set the block size 1667 * in the mode page to something other than 0. 1668 * 1669 * I believe that this is a non-issue. If user apps 1670 * don't adjust their read size to match our record 1671 * size, that's just life. Anyway, the typical usage 1672 * would be to issue, e.g., 64KB reads and occasionally 1673 * have to do deal with 512 byte or 1KB intermediate 1674 * records. 1675 */ 1676 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1677 MTIO_DSREG_RD : MTIO_DSREG_WR; 1678 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1679 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1680 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1681 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1682 IO_TIMEOUT); 1683 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1684 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1685 start_ccb->ccb_h.ccb_bp = bp; 1686 bp = bioq_first(&softc->bio_queue); 1687 xpt_action(start_ccb); 1688 } 1689 1690 if (bp != NULL) { 1691 /* Have more work to do, so ensure we stay scheduled */ 1692 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1693 } 1694 break; 1695 } 1696 case SA_STATE_ABNORMAL: 1697 default: 1698 panic("state 0x%x in sastart", softc->state); 1699 break; 1700 } 1701 } 1702 1703 1704 static void 1705 sadone(struct cam_periph *periph, union ccb *done_ccb) 1706 { 1707 struct sa_softc *softc; 1708 struct ccb_scsiio *csio; 1709 1710 softc = (struct sa_softc *)periph->softc; 1711 csio = &done_ccb->csio; 1712 switch (CCB_Type(csio)) { 1713 case SA_CCB_BUFFER_IO: 1714 { 1715 struct bio *bp; 1716 int error; 1717 1718 softc->dsreg = MTIO_DSREG_REST; 1719 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1720 error = 0; 1721 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1722 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1723 /* 1724 * A retry was scheduled, so just return. 1725 */ 1726 return; 1727 } 1728 } 1729 1730 if (error == EIO) { 1731 1732 /* 1733 * Catastrophic error. Mark the tape as frozen 1734 * (we no longer know tape position). 1735 * 1736 * Return all queued I/O with EIO, and unfreeze 1737 * our queue so that future transactions that 1738 * attempt to fix this problem can get to the 1739 * device. 1740 * 1741 */ 1742 1743 softc->flags |= SA_FLAG_TAPE_FROZEN; 1744 bioq_flush(&softc->bio_queue, NULL, EIO); 1745 } 1746 if (error != 0) { 1747 bp->bio_resid = bp->bio_bcount; 1748 bp->bio_error = error; 1749 bp->bio_flags |= BIO_ERROR; 1750 /* 1751 * In the error case, position is updated in saerror. 1752 */ 1753 } else { 1754 bp->bio_resid = csio->resid; 1755 bp->bio_error = 0; 1756 if (csio->resid != 0) { 1757 bp->bio_flags |= BIO_ERROR; 1758 } 1759 if (bp->bio_cmd == BIO_WRITE) { 1760 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1761 softc->filemarks = 0; 1762 } 1763 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1764 (softc->blkno != (daddr_t) -1)) { 1765 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1766 u_int32_t l; 1767 if (softc->blk_shift != 0) { 1768 l = bp->bio_bcount >> 1769 softc->blk_shift; 1770 } else { 1771 l = bp->bio_bcount / 1772 softc->media_blksize; 1773 } 1774 softc->blkno += (daddr_t) l; 1775 } else { 1776 softc->blkno++; 1777 } 1778 } 1779 } 1780 /* 1781 * If we had an error (immediate or pending), 1782 * release the device queue now. 1783 */ 1784 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1785 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1786 #ifdef CAMDEBUG 1787 if (error || bp->bio_resid) { 1788 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1789 ("error %d resid %ld count %ld\n", error, 1790 bp->bio_resid, bp->bio_bcount)); 1791 } 1792 #endif 1793 biofinish(bp, softc->device_stats, 0); 1794 break; 1795 } 1796 case SA_CCB_WAITING: 1797 { 1798 /* Caller will release the CCB */ 1799 wakeup(&done_ccb->ccb_h.cbfcnp); 1800 return; 1801 } 1802 } 1803 xpt_release_ccb(done_ccb); 1804 } 1805 1806 /* 1807 * Mount the tape (make sure it's ready for I/O). 1808 */ 1809 static int 1810 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1811 { 1812 struct sa_softc *softc; 1813 union ccb *ccb; 1814 int error; 1815 1816 /* 1817 * oflags can be checked for 'kind' of open (read-only check) - later 1818 * dev can be checked for a control-mode or compression open - later 1819 */ 1820 UNUSED_PARAMETER(oflags); 1821 UNUSED_PARAMETER(dev); 1822 1823 1824 softc = (struct sa_softc *)periph->softc; 1825 1826 /* 1827 * This should determine if something has happend since the last 1828 * open/mount that would invalidate the mount. We do *not* want 1829 * to retry this command- we just want the status. But we only 1830 * do this if we're mounted already- if we're not mounted, 1831 * we don't care about the unit read state and can instead use 1832 * this opportunity to attempt to reserve the tape unit. 1833 */ 1834 1835 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1836 ccb = cam_periph_getccb(periph, 1); 1837 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1838 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1839 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1840 softc->device_stats); 1841 QFRLS(ccb); 1842 if (error == ENXIO) { 1843 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1844 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1845 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1846 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1847 softc->device_stats); 1848 QFRLS(ccb); 1849 } else if (error) { 1850 /* 1851 * We don't need to freeze the tape because we 1852 * will now attempt to rewind/load it. 1853 */ 1854 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1855 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1856 xpt_print(periph->path, 1857 "error %d on TUR in samount\n", error); 1858 } 1859 } 1860 } else { 1861 error = sareservereleaseunit(periph, TRUE); 1862 if (error) { 1863 return (error); 1864 } 1865 ccb = cam_periph_getccb(periph, 1); 1866 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1867 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1868 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1869 softc->device_stats); 1870 QFRLS(ccb); 1871 } 1872 1873 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1874 struct scsi_read_block_limits_data *rblim = NULL; 1875 int comp_enabled, comp_supported; 1876 u_int8_t write_protect, guessing = 0; 1877 1878 /* 1879 * Clear out old state. 1880 */ 1881 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1882 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1883 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1884 softc->filemarks = 0; 1885 1886 /* 1887 * *Very* first off, make sure we're loaded to BOT. 1888 */ 1889 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1890 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1891 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1892 softc->device_stats); 1893 QFRLS(ccb); 1894 1895 /* 1896 * In case this doesn't work, do a REWIND instead 1897 */ 1898 if (error) { 1899 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1900 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1901 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1902 softc->device_stats); 1903 QFRLS(ccb); 1904 } 1905 if (error) { 1906 xpt_release_ccb(ccb); 1907 goto exit; 1908 } 1909 1910 /* 1911 * Do a dummy test read to force access to the 1912 * media so that the drive will really know what's 1913 * there. We actually don't really care what the 1914 * blocksize on tape is and don't expect to really 1915 * read a full record. 1916 */ 1917 rblim = (struct scsi_read_block_limits_data *) 1918 malloc(8192, M_SCSISA, M_NOWAIT); 1919 if (rblim == NULL) { 1920 xpt_print(periph->path, "no memory for test read\n"); 1921 xpt_release_ccb(ccb); 1922 error = ENOMEM; 1923 goto exit; 1924 } 1925 1926 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1927 scsi_sa_read_write(&ccb->csio, 0, sadone, 1928 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1929 (void *) rblim, 8192, SSD_FULL_SIZE, 1930 IO_TIMEOUT); 1931 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1932 softc->device_stats); 1933 QFRLS(ccb); 1934 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1935 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1936 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1937 SF_NO_PRINT | SF_RETRY_UA, 1938 softc->device_stats); 1939 QFRLS(ccb); 1940 if (error) { 1941 xpt_print(periph->path, 1942 "unable to rewind after test read\n"); 1943 xpt_release_ccb(ccb); 1944 goto exit; 1945 } 1946 } 1947 1948 /* 1949 * Next off, determine block limits. 1950 */ 1951 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1952 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1953 1954 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1955 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 1956 1957 QFRLS(ccb); 1958 xpt_release_ccb(ccb); 1959 1960 if (error != 0) { 1961 /* 1962 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1963 * a MANDATORY command. Anyway- it doesn't matter- 1964 * we can proceed anyway. 1965 */ 1966 softc->blk_gran = 0; 1967 softc->max_blk = ~0; 1968 softc->min_blk = 0; 1969 } else { 1970 if (softc->scsi_rev >= SCSI_REV_SPC) { 1971 softc->blk_gran = RBL_GRAN(rblim); 1972 } else { 1973 softc->blk_gran = 0; 1974 } 1975 /* 1976 * We take max_blk == min_blk to mean a default to 1977 * fixed mode- but note that whatever we get out of 1978 * sagetparams below will actually determine whether 1979 * we are actually *in* fixed mode. 1980 */ 1981 softc->max_blk = scsi_3btoul(rblim->maximum); 1982 softc->min_blk = scsi_2btoul(rblim->minimum); 1983 1984 1985 } 1986 /* 1987 * Next, perform a mode sense to determine 1988 * current density, blocksize, compression etc. 1989 */ 1990 error = sagetparams(periph, SA_PARAM_ALL, 1991 &softc->media_blksize, 1992 &softc->media_density, 1993 &softc->media_numblks, 1994 &softc->buffer_mode, &write_protect, 1995 &softc->speed, &comp_supported, 1996 &comp_enabled, &softc->comp_algorithm, 1997 NULL); 1998 1999 if (error != 0) { 2000 /* 2001 * We could work a little harder here. We could 2002 * adjust our attempts to get information. It 2003 * might be an ancient tape drive. If someone 2004 * nudges us, we'll do that. 2005 */ 2006 goto exit; 2007 } 2008 2009 /* 2010 * If no quirk has determined that this is a device that is 2011 * preferred to be in fixed or variable mode, now is the time 2012 * to find out. 2013 */ 2014 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2015 guessing = 1; 2016 /* 2017 * This could be expensive to find out. Luckily we 2018 * only need to do this once. If we start out in 2019 * 'default' mode, try and set ourselves to one 2020 * of the densities that would determine a wad 2021 * of other stuff. Go from highest to lowest. 2022 */ 2023 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2024 int i; 2025 static u_int8_t ctry[] = { 2026 SCSI_DENSITY_HALFINCH_PE, 2027 SCSI_DENSITY_HALFINCH_6250C, 2028 SCSI_DENSITY_HALFINCH_6250, 2029 SCSI_DENSITY_HALFINCH_1600, 2030 SCSI_DENSITY_HALFINCH_800, 2031 SCSI_DENSITY_QIC_4GB, 2032 SCSI_DENSITY_QIC_2GB, 2033 SCSI_DENSITY_QIC_525_320, 2034 SCSI_DENSITY_QIC_150, 2035 SCSI_DENSITY_QIC_120, 2036 SCSI_DENSITY_QIC_24, 2037 SCSI_DENSITY_QIC_11_9TRK, 2038 SCSI_DENSITY_QIC_11_4TRK, 2039 SCSI_DENSITY_QIC_1320, 2040 SCSI_DENSITY_QIC_3080, 2041 0 2042 }; 2043 for (i = 0; ctry[i]; i++) { 2044 error = sasetparams(periph, 2045 SA_PARAM_DENSITY, 0, ctry[i], 2046 0, SF_NO_PRINT); 2047 if (error == 0) { 2048 softc->media_density = ctry[i]; 2049 break; 2050 } 2051 } 2052 } 2053 switch (softc->media_density) { 2054 case SCSI_DENSITY_QIC_11_4TRK: 2055 case SCSI_DENSITY_QIC_11_9TRK: 2056 case SCSI_DENSITY_QIC_24: 2057 case SCSI_DENSITY_QIC_120: 2058 case SCSI_DENSITY_QIC_150: 2059 case SCSI_DENSITY_QIC_525_320: 2060 case SCSI_DENSITY_QIC_1320: 2061 case SCSI_DENSITY_QIC_3080: 2062 softc->quirks &= ~SA_QUIRK_2FM; 2063 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2064 softc->last_media_blksize = 512; 2065 break; 2066 case SCSI_DENSITY_QIC_4GB: 2067 case SCSI_DENSITY_QIC_2GB: 2068 softc->quirks &= ~SA_QUIRK_2FM; 2069 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2070 softc->last_media_blksize = 1024; 2071 break; 2072 default: 2073 softc->last_media_blksize = 2074 softc->media_blksize; 2075 softc->quirks |= SA_QUIRK_VARIABLE; 2076 break; 2077 } 2078 } 2079 2080 /* 2081 * If no quirk has determined that this is a device that needs 2082 * to have 2 Filemarks at EOD, now is the time to find out. 2083 */ 2084 2085 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2086 switch (softc->media_density) { 2087 case SCSI_DENSITY_HALFINCH_800: 2088 case SCSI_DENSITY_HALFINCH_1600: 2089 case SCSI_DENSITY_HALFINCH_6250: 2090 case SCSI_DENSITY_HALFINCH_6250C: 2091 case SCSI_DENSITY_HALFINCH_PE: 2092 softc->quirks &= ~SA_QUIRK_1FM; 2093 softc->quirks |= SA_QUIRK_2FM; 2094 break; 2095 default: 2096 break; 2097 } 2098 } 2099 2100 /* 2101 * Now validate that some info we got makes sense. 2102 */ 2103 if ((softc->max_blk < softc->media_blksize) || 2104 (softc->min_blk > softc->media_blksize && 2105 softc->media_blksize)) { 2106 xpt_print(periph->path, 2107 "BLOCK LIMITS (%d..%d) could not match current " 2108 "block settings (%d)- adjusting\n", softc->min_blk, 2109 softc->max_blk, softc->media_blksize); 2110 softc->max_blk = softc->min_blk = 2111 softc->media_blksize; 2112 } 2113 2114 /* 2115 * Now put ourselves into the right frame of mind based 2116 * upon quirks... 2117 */ 2118 tryagain: 2119 /* 2120 * If we want to be in FIXED mode and our current blocksize 2121 * is not equal to our last blocksize (if nonzero), try and 2122 * set ourselves to this last blocksize (as the 'preferred' 2123 * block size). The initial quirkmatch at registry sets the 2124 * initial 'last' blocksize. If, for whatever reason, this 2125 * 'last' blocksize is zero, set the blocksize to 512, 2126 * or min_blk if that's larger. 2127 */ 2128 if ((softc->quirks & SA_QUIRK_FIXED) && 2129 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2130 (softc->media_blksize != softc->last_media_blksize)) { 2131 softc->media_blksize = softc->last_media_blksize; 2132 if (softc->media_blksize == 0) { 2133 softc->media_blksize = 512; 2134 if (softc->media_blksize < softc->min_blk) { 2135 softc->media_blksize = softc->min_blk; 2136 } 2137 } 2138 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2139 softc->media_blksize, 0, 0, SF_NO_PRINT); 2140 if (error) { 2141 xpt_print(periph->path, 2142 "unable to set fixed blocksize to %d\n", 2143 softc->media_blksize); 2144 goto exit; 2145 } 2146 } 2147 2148 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2149 (softc->media_blksize != 0)) { 2150 softc->last_media_blksize = softc->media_blksize; 2151 softc->media_blksize = 0; 2152 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2153 0, 0, 0, SF_NO_PRINT); 2154 if (error) { 2155 /* 2156 * If this fails and we were guessing, just 2157 * assume that we got it wrong and go try 2158 * fixed block mode. Don't even check against 2159 * density code at this point. 2160 */ 2161 if (guessing) { 2162 softc->quirks &= ~SA_QUIRK_VARIABLE; 2163 softc->quirks |= SA_QUIRK_FIXED; 2164 if (softc->last_media_blksize == 0) 2165 softc->last_media_blksize = 512; 2166 goto tryagain; 2167 } 2168 xpt_print(periph->path, 2169 "unable to set variable blocksize\n"); 2170 goto exit; 2171 } 2172 } 2173 2174 /* 2175 * Now that we have the current block size, 2176 * set up some parameters for sastart's usage. 2177 */ 2178 if (softc->media_blksize) { 2179 softc->flags |= SA_FLAG_FIXED; 2180 if (powerof2(softc->media_blksize)) { 2181 softc->blk_shift = 2182 ffs(softc->media_blksize) - 1; 2183 softc->blk_mask = softc->media_blksize - 1; 2184 } else { 2185 softc->blk_mask = ~0; 2186 softc->blk_shift = 0; 2187 } 2188 } else { 2189 /* 2190 * The SCSI-3 spec allows 0 to mean "unspecified". 2191 * The SCSI-1 spec allows 0 to mean 'infinite'. 2192 * 2193 * Either works here. 2194 */ 2195 if (softc->max_blk == 0) { 2196 softc->max_blk = ~0; 2197 } 2198 softc->blk_shift = 0; 2199 if (softc->blk_gran != 0) { 2200 softc->blk_mask = softc->blk_gran - 1; 2201 } else { 2202 softc->blk_mask = 0; 2203 } 2204 } 2205 2206 if (write_protect) 2207 softc->flags |= SA_FLAG_TAPE_WP; 2208 2209 if (comp_supported) { 2210 if (softc->saved_comp_algorithm == 0) 2211 softc->saved_comp_algorithm = 2212 softc->comp_algorithm; 2213 softc->flags |= SA_FLAG_COMP_SUPP; 2214 if (comp_enabled) 2215 softc->flags |= SA_FLAG_COMP_ENABLED; 2216 } else 2217 softc->flags |= SA_FLAG_COMP_UNSUPP; 2218 2219 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2220 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2221 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2222 0, 0, SF_NO_PRINT); 2223 if (error == 0) { 2224 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2225 } else { 2226 xpt_print(periph->path, 2227 "unable to set buffered mode\n"); 2228 } 2229 error = 0; /* not an error */ 2230 } 2231 2232 2233 if (error == 0) { 2234 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2235 } 2236 exit: 2237 if (rblim != NULL) 2238 free(rblim, M_SCSISA); 2239 2240 if (error != 0) { 2241 softc->dsreg = MTIO_DSREG_NIL; 2242 } else { 2243 softc->fileno = softc->blkno = 0; 2244 softc->dsreg = MTIO_DSREG_REST; 2245 } 2246 #ifdef SA_1FM_AT_EOD 2247 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2248 softc->quirks |= SA_QUIRK_1FM; 2249 #else 2250 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2251 softc->quirks |= SA_QUIRK_2FM; 2252 #endif 2253 } else 2254 xpt_release_ccb(ccb); 2255 2256 /* 2257 * If we return an error, we're not mounted any more, 2258 * so release any device reservation. 2259 */ 2260 if (error != 0) { 2261 (void) sareservereleaseunit(periph, FALSE); 2262 } else { 2263 /* 2264 * Clear I/O residual. 2265 */ 2266 softc->last_io_resid = 0; 2267 softc->last_ctl_resid = 0; 2268 } 2269 return (error); 2270 } 2271 2272 /* 2273 * How many filemarks do we need to write if we were to terminate the 2274 * tape session right now? Note that this can be a negative number 2275 */ 2276 2277 static int 2278 samarkswanted(struct cam_periph *periph) 2279 { 2280 int markswanted; 2281 struct sa_softc *softc; 2282 2283 softc = (struct sa_softc *)periph->softc; 2284 markswanted = 0; 2285 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2286 markswanted++; 2287 if (softc->quirks & SA_QUIRK_2FM) 2288 markswanted++; 2289 } 2290 markswanted -= softc->filemarks; 2291 return (markswanted); 2292 } 2293 2294 static int 2295 sacheckeod(struct cam_periph *periph) 2296 { 2297 int error; 2298 int markswanted; 2299 2300 markswanted = samarkswanted(periph); 2301 2302 if (markswanted > 0) { 2303 error = sawritefilemarks(periph, markswanted, FALSE); 2304 } else { 2305 error = 0; 2306 } 2307 return (error); 2308 } 2309 2310 static int 2311 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2312 { 2313 static const char *toobig = 2314 "%d-byte tape record bigger than supplied buffer\n"; 2315 struct cam_periph *periph; 2316 struct sa_softc *softc; 2317 struct ccb_scsiio *csio; 2318 struct scsi_sense_data *sense; 2319 u_int32_t resid = 0; 2320 int32_t info = 0; 2321 cam_status status; 2322 int error_code, sense_key, asc, ascq, error, aqvalid; 2323 2324 periph = xpt_path_periph(ccb->ccb_h.path); 2325 softc = (struct sa_softc *)periph->softc; 2326 csio = &ccb->csio; 2327 sense = &csio->sense_data; 2328 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2329 aqvalid = sense->extra_len >= 6; 2330 error = 0; 2331 2332 status = csio->ccb_h.status & CAM_STATUS_MASK; 2333 2334 /* 2335 * Calculate/latch up, any residuals... We do this in a funny 2-step 2336 * so we can print stuff here if we have CAM_DEBUG enabled for this 2337 * unit. 2338 */ 2339 if (status == CAM_SCSI_STATUS_ERROR) { 2340 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2341 info = (int32_t) scsi_4btoul(sense->info); 2342 resid = info; 2343 if ((softc->flags & SA_FLAG_FIXED) != 0) 2344 resid *= softc->media_blksize; 2345 } else { 2346 resid = csio->dxfer_len; 2347 info = resid; 2348 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2349 if (softc->media_blksize) 2350 info /= softc->media_blksize; 2351 } 2352 } 2353 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2354 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2355 sizeof (struct scsi_sense_data)); 2356 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2357 (int) csio->cdb_len); 2358 softc->last_io_resid = resid; 2359 softc->last_resid_was_io = 1; 2360 } else { 2361 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2362 sizeof (struct scsi_sense_data)); 2363 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2364 (int) csio->cdb_len); 2365 softc->last_ctl_resid = resid; 2366 softc->last_resid_was_io = 0; 2367 } 2368 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2369 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2370 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2371 sense_key, asc, ascq, status, 2372 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2373 } else { 2374 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2375 ("Cam Status 0x%x\n", status)); 2376 } 2377 2378 switch (status) { 2379 case CAM_REQ_CMP: 2380 return (0); 2381 case CAM_SCSI_STATUS_ERROR: 2382 /* 2383 * If a read/write command, we handle it here. 2384 */ 2385 if (CCB_Type(csio) != SA_CCB_WAITING) { 2386 break; 2387 } 2388 /* 2389 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2390 * on a non read/write command, we assume it's not an error 2391 * and propagate the residule and return. 2392 */ 2393 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2394 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2395 csio->resid = resid; 2396 QFRLS(ccb); 2397 return (0); 2398 } 2399 /* 2400 * Otherwise, we let the common code handle this. 2401 */ 2402 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2403 2404 /* 2405 * XXX: To Be Fixed 2406 * We cannot depend upon CAM honoring retry counts for these. 2407 */ 2408 case CAM_SCSI_BUS_RESET: 2409 case CAM_BDR_SENT: 2410 if (ccb->ccb_h.retry_count <= 0) { 2411 return (EIO); 2412 } 2413 /* FALLTHROUGH */ 2414 default: 2415 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2416 } 2417 2418 /* 2419 * Handle filemark, end of tape, mismatched record sizes.... 2420 * From this point out, we're only handling read/write cases. 2421 * Handle writes && reads differently. 2422 */ 2423 2424 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2425 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2426 csio->resid = resid; 2427 error = ENOSPC; 2428 } else if (sense->flags & SSD_EOM) { 2429 softc->flags |= SA_FLAG_EOM_PENDING; 2430 /* 2431 * Grotesque as it seems, the few times 2432 * I've actually seen a non-zero resid, 2433 * the tape drive actually lied and had 2434 * written all the data!. 2435 */ 2436 csio->resid = 0; 2437 } 2438 } else { 2439 csio->resid = resid; 2440 if (sense_key == SSD_KEY_BLANK_CHECK) { 2441 if (softc->quirks & SA_QUIRK_1FM) { 2442 error = 0; 2443 softc->flags |= SA_FLAG_EOM_PENDING; 2444 } else { 2445 error = EIO; 2446 } 2447 } else if (sense->flags & SSD_FILEMARK) { 2448 if (softc->flags & SA_FLAG_FIXED) { 2449 error = -1; 2450 softc->flags |= SA_FLAG_EOF_PENDING; 2451 } 2452 /* 2453 * Unconditionally, if we detected a filemark on a read, 2454 * mark that we've run moved a file ahead. 2455 */ 2456 if (softc->fileno != (daddr_t) -1) { 2457 softc->fileno++; 2458 softc->blkno = 0; 2459 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2460 } 2461 } 2462 } 2463 2464 /* 2465 * Incorrect Length usually applies to read, but can apply to writes. 2466 */ 2467 if (error == 0 && (sense->flags & SSD_ILI)) { 2468 if (info < 0) { 2469 xpt_print(csio->ccb_h.path, toobig, 2470 csio->dxfer_len - info); 2471 csio->resid = csio->dxfer_len; 2472 error = EIO; 2473 } else { 2474 csio->resid = resid; 2475 if (softc->flags & SA_FLAG_FIXED) { 2476 softc->flags |= SA_FLAG_EIO_PENDING; 2477 } 2478 /* 2479 * Bump the block number if we hadn't seen a filemark. 2480 * Do this independent of errors (we've moved anyway). 2481 */ 2482 if ((sense->flags & SSD_FILEMARK) == 0) { 2483 if (softc->blkno != (daddr_t) -1) { 2484 softc->blkno++; 2485 csio->ccb_h.ccb_pflags |= 2486 SA_POSITION_UPDATED; 2487 } 2488 } 2489 } 2490 } 2491 2492 if (error <= 0) { 2493 /* 2494 * Unfreeze the queue if frozen as we're not returning anything 2495 * to our waiters that would indicate an I/O error has occurred 2496 * (yet). 2497 */ 2498 QFRLS(ccb); 2499 error = 0; 2500 } 2501 return (error); 2502 } 2503 2504 static int 2505 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2506 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2507 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2508 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2509 sa_comp_t *tcs) 2510 { 2511 union ccb *ccb; 2512 void *mode_buffer; 2513 struct scsi_mode_header_6 *mode_hdr; 2514 struct scsi_mode_blk_desc *mode_blk; 2515 int mode_buffer_len; 2516 struct sa_softc *softc; 2517 u_int8_t cpage; 2518 int error; 2519 cam_status status; 2520 2521 softc = (struct sa_softc *)periph->softc; 2522 ccb = cam_periph_getccb(periph, 1); 2523 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2524 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2525 else 2526 cpage = SA_DATA_COMPRESSION_PAGE; 2527 2528 retry: 2529 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2530 2531 if (params_to_get & SA_PARAM_COMPRESSION) { 2532 if (softc->quirks & SA_QUIRK_NOCOMP) { 2533 *comp_supported = FALSE; 2534 params_to_get &= ~SA_PARAM_COMPRESSION; 2535 } else 2536 mode_buffer_len += sizeof (sa_comp_t); 2537 } 2538 2539 /* XXX Fix M_NOWAIT */ 2540 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2541 if (mode_buffer == NULL) { 2542 xpt_release_ccb(ccb); 2543 return (ENOMEM); 2544 } 2545 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2546 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2547 2548 /* it is safe to retry this */ 2549 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2550 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2551 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2552 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2553 2554 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2555 softc->device_stats); 2556 QFRLS(ccb); 2557 2558 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2559 2560 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2561 /* 2562 * Hmm. Let's see if we can try another page... 2563 * If we've already done that, give up on compression 2564 * for this device and remember this for the future 2565 * and attempt the request without asking for compression 2566 * info. 2567 */ 2568 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2569 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2570 goto retry; 2571 } 2572 softc->quirks |= SA_QUIRK_NOCOMP; 2573 free(mode_buffer, M_SCSISA); 2574 goto retry; 2575 } else if (status == CAM_SCSI_STATUS_ERROR) { 2576 /* Tell the user about the fatal error. */ 2577 scsi_sense_print(&ccb->csio); 2578 goto sagetparamsexit; 2579 } 2580 2581 /* 2582 * If the user only wants the compression information, and 2583 * the device doesn't send back the block descriptor, it's 2584 * no big deal. If the user wants more than just 2585 * compression, though, and the device doesn't pass back the 2586 * block descriptor, we need to send another mode sense to 2587 * get the block descriptor. 2588 */ 2589 if ((mode_hdr->blk_desc_len == 0) && 2590 (params_to_get & SA_PARAM_COMPRESSION) && 2591 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2592 2593 /* 2594 * Decrease the mode buffer length by the size of 2595 * the compression page, to make sure the data 2596 * there doesn't get overwritten. 2597 */ 2598 mode_buffer_len -= sizeof (sa_comp_t); 2599 2600 /* 2601 * Now move the compression page that we presumably 2602 * got back down the memory chunk a little bit so 2603 * it doesn't get spammed. 2604 */ 2605 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2606 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2607 2608 /* 2609 * Now, we issue another mode sense and just ask 2610 * for the block descriptor, etc. 2611 */ 2612 2613 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2614 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2615 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2616 SCSIOP_TIMEOUT); 2617 2618 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2619 softc->device_stats); 2620 QFRLS(ccb); 2621 2622 if (error != 0) 2623 goto sagetparamsexit; 2624 } 2625 2626 if (params_to_get & SA_PARAM_BLOCKSIZE) 2627 *blocksize = scsi_3btoul(mode_blk->blklen); 2628 2629 if (params_to_get & SA_PARAM_NUMBLOCKS) 2630 *numblocks = scsi_3btoul(mode_blk->nblocks); 2631 2632 if (params_to_get & SA_PARAM_BUFF_MODE) 2633 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2634 2635 if (params_to_get & SA_PARAM_DENSITY) 2636 *density = mode_blk->density; 2637 2638 if (params_to_get & SA_PARAM_WP) 2639 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2640 2641 if (params_to_get & SA_PARAM_SPEED) 2642 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2643 2644 if (params_to_get & SA_PARAM_COMPRESSION) { 2645 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2646 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2647 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2648 *comp_supported = 2649 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2650 *comp_enabled = 2651 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2652 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2653 } else { 2654 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2655 /* 2656 * We don't really know whether this device supports 2657 * Data Compression if the the algorithm field is 2658 * zero. Just say we do. 2659 */ 2660 *comp_supported = TRUE; 2661 *comp_enabled = 2662 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2663 *comp_algorithm = cp->sel_comp_alg; 2664 } 2665 if (tcs != NULL) 2666 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2667 } 2668 2669 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2670 int idx; 2671 char *xyz = mode_buffer; 2672 xpt_print_path(periph->path); 2673 printf("Mode Sense Data="); 2674 for (idx = 0; idx < mode_buffer_len; idx++) 2675 printf(" 0x%02x", xyz[idx] & 0xff); 2676 printf("\n"); 2677 } 2678 2679 sagetparamsexit: 2680 2681 xpt_release_ccb(ccb); 2682 free(mode_buffer, M_SCSISA); 2683 return (error); 2684 } 2685 2686 /* 2687 * The purpose of this function is to set one of four different parameters 2688 * for a tape drive: 2689 * - blocksize 2690 * - density 2691 * - compression / compression algorithm 2692 * - buffering mode 2693 * 2694 * The assumption is that this will be called from saioctl(), and therefore 2695 * from a process context. Thus the waiting malloc calls below. If that 2696 * assumption ever changes, the malloc calls should be changed to be 2697 * NOWAIT mallocs. 2698 * 2699 * Any or all of the four parameters may be set when this function is 2700 * called. It should handle setting more than one parameter at once. 2701 */ 2702 static int 2703 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2704 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2705 u_int32_t sense_flags) 2706 { 2707 struct sa_softc *softc; 2708 u_int32_t current_blocksize; 2709 u_int32_t current_calg; 2710 u_int8_t current_density; 2711 u_int8_t current_speed; 2712 int comp_enabled, comp_supported; 2713 void *mode_buffer; 2714 int mode_buffer_len; 2715 struct scsi_mode_header_6 *mode_hdr; 2716 struct scsi_mode_blk_desc *mode_blk; 2717 sa_comp_t *ccomp, *cpage; 2718 int buff_mode; 2719 union ccb *ccb = NULL; 2720 int error; 2721 2722 softc = (struct sa_softc *)periph->softc; 2723 2724 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2725 if (ccomp == NULL) 2726 return (ENOMEM); 2727 2728 /* 2729 * Since it doesn't make sense to set the number of blocks, or 2730 * write protection, we won't try to get the current value. We 2731 * always want to get the blocksize, so we can set it back to the 2732 * proper value. 2733 */ 2734 error = sagetparams(periph, 2735 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2736 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2737 ¤t_speed, &comp_supported, &comp_enabled, 2738 ¤t_calg, ccomp); 2739 2740 if (error != 0) { 2741 free(ccomp, M_SCSISA); 2742 return (error); 2743 } 2744 2745 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2746 if (params_to_set & SA_PARAM_COMPRESSION) 2747 mode_buffer_len += sizeof (sa_comp_t); 2748 2749 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2750 if (mode_buffer == NULL) { 2751 free(ccomp, M_SCSISA); 2752 return (ENOMEM); 2753 } 2754 2755 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2756 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2757 2758 ccb = cam_periph_getccb(periph, 1); 2759 2760 retry: 2761 2762 if (params_to_set & SA_PARAM_COMPRESSION) { 2763 if (mode_blk) { 2764 cpage = (sa_comp_t *)&mode_blk[1]; 2765 } else { 2766 cpage = (sa_comp_t *)&mode_hdr[1]; 2767 } 2768 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2769 cpage->hdr.pagecode &= ~0x80; 2770 } else 2771 cpage = NULL; 2772 2773 /* 2774 * If the caller wants us to set the blocksize, use the one they 2775 * pass in. Otherwise, use the blocksize we got back from the 2776 * mode select above. 2777 */ 2778 if (mode_blk) { 2779 if (params_to_set & SA_PARAM_BLOCKSIZE) 2780 scsi_ulto3b(blocksize, mode_blk->blklen); 2781 else 2782 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2783 2784 /* 2785 * Set density if requested, else preserve old density. 2786 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2787 * devices, else density we've latched up in our softc. 2788 */ 2789 if (params_to_set & SA_PARAM_DENSITY) { 2790 mode_blk->density = density; 2791 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2792 mode_blk->density = SCSI_SAME_DENSITY; 2793 } else { 2794 mode_blk->density = softc->media_density; 2795 } 2796 } 2797 2798 /* 2799 * For mode selects, these two fields must be zero. 2800 */ 2801 mode_hdr->data_length = 0; 2802 mode_hdr->medium_type = 0; 2803 2804 /* set the speed to the current value */ 2805 mode_hdr->dev_spec = current_speed; 2806 2807 /* if set, set single-initiator buffering mode */ 2808 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2809 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2810 } 2811 2812 if (mode_blk) 2813 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2814 else 2815 mode_hdr->blk_desc_len = 0; 2816 2817 /* 2818 * First, if the user wants us to set the compression algorithm or 2819 * just turn compression on, check to make sure that this drive 2820 * supports compression. 2821 */ 2822 if (params_to_set & SA_PARAM_COMPRESSION) { 2823 /* 2824 * If the compression algorithm is 0, disable compression. 2825 * If the compression algorithm is non-zero, enable 2826 * compression and set the compression type to the 2827 * specified compression algorithm, unless the algorithm is 2828 * MT_COMP_ENABLE. In that case, we look at the 2829 * compression algorithm that is currently set and if it is 2830 * non-zero, we leave it as-is. If it is zero, and we have 2831 * saved a compression algorithm from a time when 2832 * compression was enabled before, set the compression to 2833 * the saved value. 2834 */ 2835 switch (ccomp->hdr.pagecode & ~0x80) { 2836 case SA_DEVICE_CONFIGURATION_PAGE: 2837 { 2838 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2839 if (calg == 0) { 2840 dcp->sel_comp_alg = SA_COMP_NONE; 2841 break; 2842 } 2843 if (calg != MT_COMP_ENABLE) { 2844 dcp->sel_comp_alg = calg; 2845 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2846 softc->saved_comp_algorithm != 0) { 2847 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2848 } 2849 break; 2850 } 2851 case SA_DATA_COMPRESSION_PAGE: 2852 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2853 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2854 if (calg == 0) { 2855 /* 2856 * Disable compression, but leave the 2857 * decompression and the capability bit 2858 * alone. 2859 */ 2860 dcp->dce_and_dcc = SA_DCP_DCC; 2861 dcp->dde_and_red |= SA_DCP_DDE; 2862 break; 2863 } 2864 /* enable compression && decompression */ 2865 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2866 dcp->dde_and_red |= SA_DCP_DDE; 2867 /* 2868 * If there, use compression algorithm from caller. 2869 * Otherwise, if there's a saved compression algorithm 2870 * and there is no current algorithm, use the saved 2871 * algorithm. Else parrot back what we got and hope 2872 * for the best. 2873 */ 2874 if (calg != MT_COMP_ENABLE) { 2875 scsi_ulto4b(calg, dcp->comp_algorithm); 2876 scsi_ulto4b(calg, dcp->decomp_algorithm); 2877 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2878 softc->saved_comp_algorithm != 0) { 2879 scsi_ulto4b(softc->saved_comp_algorithm, 2880 dcp->comp_algorithm); 2881 scsi_ulto4b(softc->saved_comp_algorithm, 2882 dcp->decomp_algorithm); 2883 } 2884 break; 2885 } 2886 /* 2887 * Compression does not appear to be supported- 2888 * at least via the DATA COMPRESSION page. It 2889 * would be too much to ask us to believe that 2890 * the page itself is supported, but incorrectly 2891 * reports an ability to manipulate data compression, 2892 * so we'll assume that this device doesn't support 2893 * compression. We can just fall through for that. 2894 */ 2895 /* FALLTHROUGH */ 2896 default: 2897 /* 2898 * The drive doesn't seem to support compression, 2899 * so turn off the set compression bit. 2900 */ 2901 params_to_set &= ~SA_PARAM_COMPRESSION; 2902 xpt_print(periph->path, 2903 "device does not seem to support compression\n"); 2904 2905 /* 2906 * If that was the only thing the user wanted us to set, 2907 * clean up allocated resources and return with 2908 * 'operation not supported'. 2909 */ 2910 if (params_to_set == SA_PARAM_NONE) { 2911 free(mode_buffer, M_SCSISA); 2912 xpt_release_ccb(ccb); 2913 return (ENODEV); 2914 } 2915 2916 /* 2917 * That wasn't the only thing the user wanted us to set. 2918 * So, decrease the stated mode buffer length by the 2919 * size of the compression mode page. 2920 */ 2921 mode_buffer_len -= sizeof(sa_comp_t); 2922 } 2923 } 2924 2925 /* It is safe to retry this operation */ 2926 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2927 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2928 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2929 2930 error = cam_periph_runccb(ccb, saerror, 0, 2931 sense_flags, softc->device_stats); 2932 QFRLS(ccb); 2933 2934 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2935 int idx; 2936 char *xyz = mode_buffer; 2937 xpt_print_path(periph->path); 2938 printf("Err%d, Mode Select Data=", error); 2939 for (idx = 0; idx < mode_buffer_len; idx++) 2940 printf(" 0x%02x", xyz[idx] & 0xff); 2941 printf("\n"); 2942 } 2943 2944 2945 if (error) { 2946 /* 2947 * If we can, try without setting density/blocksize. 2948 */ 2949 if (mode_blk) { 2950 if ((params_to_set & 2951 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2952 mode_blk = NULL; 2953 goto retry; 2954 } 2955 } else { 2956 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2957 cpage = (sa_comp_t *)&mode_blk[1]; 2958 } 2959 2960 /* 2961 * If we were setting the blocksize, and that failed, we 2962 * want to set it to its original value. If we weren't 2963 * setting the blocksize, we don't want to change it. 2964 */ 2965 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2966 2967 /* 2968 * Set density if requested, else preserve old density. 2969 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2970 * devices, else density we've latched up in our softc. 2971 */ 2972 if (params_to_set & SA_PARAM_DENSITY) { 2973 mode_blk->density = current_density; 2974 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2975 mode_blk->density = SCSI_SAME_DENSITY; 2976 } else { 2977 mode_blk->density = softc->media_density; 2978 } 2979 2980 if (params_to_set & SA_PARAM_COMPRESSION) 2981 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2982 2983 /* 2984 * The retry count is the only CCB field that might have been 2985 * changed that we care about, so reset it back to 1. 2986 */ 2987 ccb->ccb_h.retry_count = 1; 2988 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2989 softc->device_stats); 2990 QFRLS(ccb); 2991 } 2992 2993 xpt_release_ccb(ccb); 2994 2995 if (ccomp != NULL) 2996 free(ccomp, M_SCSISA); 2997 2998 if (params_to_set & SA_PARAM_COMPRESSION) { 2999 if (error) { 3000 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3001 /* 3002 * Even if we get an error setting compression, 3003 * do not say that we don't support it. We could 3004 * have been wrong, or it may be media specific. 3005 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3006 */ 3007 softc->saved_comp_algorithm = softc->comp_algorithm; 3008 softc->comp_algorithm = 0; 3009 } else { 3010 softc->flags |= SA_FLAG_COMP_ENABLED; 3011 softc->comp_algorithm = calg; 3012 } 3013 } 3014 3015 free(mode_buffer, M_SCSISA); 3016 return (error); 3017 } 3018 3019 static void 3020 saprevent(struct cam_periph *periph, int action) 3021 { 3022 struct sa_softc *softc; 3023 union ccb *ccb; 3024 int error, sf; 3025 3026 softc = (struct sa_softc *)periph->softc; 3027 3028 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3029 return; 3030 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3031 return; 3032 3033 /* 3034 * We can be quiet about illegal requests. 3035 */ 3036 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3037 sf = 0; 3038 } else 3039 sf = SF_QUIET_IR; 3040 3041 ccb = cam_periph_getccb(periph, 1); 3042 3043 /* It is safe to retry this operation */ 3044 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3045 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3046 3047 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3048 QFRLS(ccb); 3049 if (error == 0) { 3050 if (action == PR_ALLOW) 3051 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3052 else 3053 softc->flags |= SA_FLAG_TAPE_LOCKED; 3054 } 3055 3056 xpt_release_ccb(ccb); 3057 } 3058 3059 static int 3060 sarewind(struct cam_periph *periph) 3061 { 3062 union ccb *ccb; 3063 struct sa_softc *softc; 3064 int error; 3065 3066 softc = (struct sa_softc *)periph->softc; 3067 3068 ccb = cam_periph_getccb(periph, 1); 3069 3070 /* It is safe to retry this operation */ 3071 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3072 SSD_FULL_SIZE, REWIND_TIMEOUT); 3073 3074 softc->dsreg = MTIO_DSREG_REW; 3075 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3076 softc->dsreg = MTIO_DSREG_REST; 3077 3078 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3079 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3080 3081 xpt_release_ccb(ccb); 3082 if (error == 0) 3083 softc->fileno = softc->blkno = (daddr_t) 0; 3084 else 3085 softc->fileno = softc->blkno = (daddr_t) -1; 3086 return (error); 3087 } 3088 3089 static int 3090 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3091 { 3092 union ccb *ccb; 3093 struct sa_softc *softc; 3094 int error; 3095 3096 softc = (struct sa_softc *)periph->softc; 3097 3098 ccb = cam_periph_getccb(periph, 1); 3099 3100 /* This cannot be retried */ 3101 3102 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3103 SSD_FULL_SIZE, SPACE_TIMEOUT); 3104 3105 /* 3106 * Clear residual because we will be using it. 3107 */ 3108 softc->last_ctl_resid = 0; 3109 3110 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3111 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3112 softc->dsreg = MTIO_DSREG_REST; 3113 3114 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3115 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3116 3117 xpt_release_ccb(ccb); 3118 3119 /* 3120 * If a spacing operation has failed, we need to invalidate 3121 * this mount. 3122 * 3123 * If the spacing operation was setmarks or to end of recorded data, 3124 * we no longer know our relative position. 3125 * 3126 * If the spacing operations was spacing files in reverse, we 3127 * take account of the residual, but still check against less 3128 * than zero- if we've gone negative, we must have hit BOT. 3129 * 3130 * If the spacing operations was spacing records in reverse and 3131 * we have a residual, we've either hit BOT or hit a filemark. 3132 * In the former case, we know our new record number (0). In 3133 * the latter case, we have absolutely no idea what the real 3134 * record number is- we've stopped between the end of the last 3135 * record in the previous file and the filemark that stopped 3136 * our spacing backwards. 3137 */ 3138 if (error) { 3139 softc->fileno = softc->blkno = (daddr_t) -1; 3140 } else if (code == SS_SETMARKS || code == SS_EOD) { 3141 softc->fileno = softc->blkno = (daddr_t) -1; 3142 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3143 softc->fileno += (count - softc->last_ctl_resid); 3144 if (softc->fileno < 0) /* we must of hit BOT */ 3145 softc->fileno = 0; 3146 softc->blkno = 0; 3147 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3148 softc->blkno += (count - softc->last_ctl_resid); 3149 if (count < 0) { 3150 if (softc->last_ctl_resid || softc->blkno < 0) { 3151 if (softc->fileno == 0) { 3152 softc->blkno = 0; 3153 } else { 3154 softc->blkno = (daddr_t) -1; 3155 } 3156 } 3157 } 3158 } 3159 return (error); 3160 } 3161 3162 static int 3163 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3164 { 3165 union ccb *ccb; 3166 struct sa_softc *softc; 3167 int error, nwm = 0; 3168 3169 softc = (struct sa_softc *)periph->softc; 3170 if (softc->open_rdonly) 3171 return (EBADF); 3172 3173 ccb = cam_periph_getccb(periph, 1); 3174 /* 3175 * Clear residual because we will be using it. 3176 */ 3177 softc->last_ctl_resid = 0; 3178 3179 softc->dsreg = MTIO_DSREG_FMK; 3180 /* this *must* not be retried */ 3181 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3182 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3183 softc->dsreg = MTIO_DSREG_REST; 3184 3185 3186 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3187 3188 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3189 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3190 3191 if (error == 0 && nmarks) { 3192 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3193 nwm = nmarks - softc->last_ctl_resid; 3194 softc->filemarks += nwm; 3195 } 3196 3197 xpt_release_ccb(ccb); 3198 3199 /* 3200 * Update relative positions (if we're doing that). 3201 */ 3202 if (error) { 3203 softc->fileno = softc->blkno = (daddr_t) -1; 3204 } else if (softc->fileno != (daddr_t) -1) { 3205 softc->fileno += nwm; 3206 softc->blkno = 0; 3207 } 3208 return (error); 3209 } 3210 3211 static int 3212 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3213 { 3214 struct scsi_tape_position_data loc; 3215 union ccb *ccb; 3216 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3217 int error; 3218 3219 /* 3220 * We try and flush any buffered writes here if we were writing 3221 * and we're trying to get hardware block position. It eats 3222 * up performance substantially, but I'm wary of drive firmware. 3223 * 3224 * I think that *logical* block position is probably okay- 3225 * but hardware block position might have to wait for data 3226 * to hit media to be valid. Caveat Emptor. 3227 */ 3228 3229 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3230 error = sawritefilemarks(periph, 0, 0); 3231 if (error && error != EACCES) 3232 return (error); 3233 } 3234 3235 ccb = cam_periph_getccb(periph, 1); 3236 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3237 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3238 softc->dsreg = MTIO_DSREG_RBSY; 3239 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3240 softc->dsreg = MTIO_DSREG_REST; 3241 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3242 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3243 3244 if (error == 0) { 3245 if (loc.flags & SA_RPOS_UNCERTAIN) { 3246 error = EINVAL; /* nothing is certain */ 3247 } else { 3248 *blkptr = scsi_4btoul(loc.firstblk); 3249 } 3250 } 3251 3252 xpt_release_ccb(ccb); 3253 return (error); 3254 } 3255 3256 static int 3257 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3258 { 3259 union ccb *ccb; 3260 struct sa_softc *softc; 3261 int error; 3262 3263 /* 3264 * We used to try and flush any buffered writes here. 3265 * Now we push this onto user applications to either 3266 * flush the pending writes themselves (via a zero count 3267 * WRITE FILEMARKS command) or they can trust their tape 3268 * drive to do this correctly for them. 3269 */ 3270 3271 softc = (struct sa_softc *)periph->softc; 3272 ccb = cam_periph_getccb(periph, 1); 3273 3274 3275 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3276 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3277 3278 3279 softc->dsreg = MTIO_DSREG_POS; 3280 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3281 softc->dsreg = MTIO_DSREG_REST; 3282 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3283 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3284 xpt_release_ccb(ccb); 3285 /* 3286 * Note relative file && block number position as now unknown. 3287 */ 3288 softc->fileno = softc->blkno = (daddr_t) -1; 3289 return (error); 3290 } 3291 3292 static int 3293 saretension(struct cam_periph *periph) 3294 { 3295 union ccb *ccb; 3296 struct sa_softc *softc; 3297 int error; 3298 3299 softc = (struct sa_softc *)periph->softc; 3300 3301 ccb = cam_periph_getccb(periph, 1); 3302 3303 /* It is safe to retry this operation */ 3304 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3305 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3306 3307 softc->dsreg = MTIO_DSREG_TEN; 3308 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3309 softc->dsreg = MTIO_DSREG_REST; 3310 3311 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3312 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3313 xpt_release_ccb(ccb); 3314 if (error == 0) 3315 softc->fileno = softc->blkno = (daddr_t) 0; 3316 else 3317 softc->fileno = softc->blkno = (daddr_t) -1; 3318 return (error); 3319 } 3320 3321 static int 3322 sareservereleaseunit(struct cam_periph *periph, int reserve) 3323 { 3324 union ccb *ccb; 3325 struct sa_softc *softc; 3326 int error; 3327 3328 softc = (struct sa_softc *)periph->softc; 3329 ccb = cam_periph_getccb(periph, 1); 3330 3331 /* It is safe to retry this operation */ 3332 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3333 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3334 softc->dsreg = MTIO_DSREG_RBSY; 3335 error = cam_periph_runccb(ccb, saerror, 0, 3336 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3337 softc->dsreg = MTIO_DSREG_REST; 3338 QFRLS(ccb); 3339 xpt_release_ccb(ccb); 3340 3341 /* 3342 * If the error was Illegal Request, then the device doesn't support 3343 * RESERVE/RELEASE. This is not an error. 3344 */ 3345 if (error == EINVAL) { 3346 error = 0; 3347 } 3348 3349 return (error); 3350 } 3351 3352 static int 3353 saloadunload(struct cam_periph *periph, int load) 3354 { 3355 union ccb *ccb; 3356 struct sa_softc *softc; 3357 int error; 3358 3359 softc = (struct sa_softc *)periph->softc; 3360 3361 ccb = cam_periph_getccb(periph, 1); 3362 3363 /* It is safe to retry this operation */ 3364 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3365 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3366 3367 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3368 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3369 softc->dsreg = MTIO_DSREG_REST; 3370 QFRLS(ccb); 3371 xpt_release_ccb(ccb); 3372 3373 if (error || load == 0) 3374 softc->fileno = softc->blkno = (daddr_t) -1; 3375 else if (error == 0) 3376 softc->fileno = softc->blkno = (daddr_t) 0; 3377 return (error); 3378 } 3379 3380 static int 3381 saerase(struct cam_periph *periph, int longerase) 3382 { 3383 3384 union ccb *ccb; 3385 struct sa_softc *softc; 3386 int error; 3387 3388 softc = (struct sa_softc *)periph->softc; 3389 if (softc->open_rdonly) 3390 return (EBADF); 3391 3392 ccb = cam_periph_getccb(periph, 1); 3393 3394 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3395 SSD_FULL_SIZE, ERASE_TIMEOUT); 3396 3397 softc->dsreg = MTIO_DSREG_ZER; 3398 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3399 softc->dsreg = MTIO_DSREG_REST; 3400 3401 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3402 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3403 xpt_release_ccb(ccb); 3404 return (error); 3405 } 3406 3407 #endif /* _KERNEL */ 3408 3409 /* 3410 * Read tape block limits command. 3411 */ 3412 void 3413 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3414 void (*cbfcnp)(struct cam_periph *, union ccb *), 3415 u_int8_t tag_action, 3416 struct scsi_read_block_limits_data *rlimit_buf, 3417 u_int8_t sense_len, u_int32_t timeout) 3418 { 3419 struct scsi_read_block_limits *scsi_cmd; 3420 3421 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3422 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3423 sizeof(*scsi_cmd), timeout); 3424 3425 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3426 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3427 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3428 } 3429 3430 void 3431 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3432 void (*cbfcnp)(struct cam_periph *, union ccb *), 3433 u_int8_t tag_action, int readop, int sli, 3434 int fixed, u_int32_t length, u_int8_t *data_ptr, 3435 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3436 { 3437 struct scsi_sa_rw *scsi_cmd; 3438 3439 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3440 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3441 scsi_cmd->sli_fixed = 0; 3442 if (sli && readop) 3443 scsi_cmd->sli_fixed |= SAR_SLI; 3444 if (fixed) 3445 scsi_cmd->sli_fixed |= SARW_FIXED; 3446 scsi_ulto3b(length, scsi_cmd->length); 3447 scsi_cmd->control = 0; 3448 3449 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3450 tag_action, data_ptr, dxfer_len, sense_len, 3451 sizeof(*scsi_cmd), timeout); 3452 } 3453 3454 void 3455 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3456 void (*cbfcnp)(struct cam_periph *, union ccb *), 3457 u_int8_t tag_action, int immediate, int eot, 3458 int reten, int load, u_int8_t sense_len, 3459 u_int32_t timeout) 3460 { 3461 struct scsi_load_unload *scsi_cmd; 3462 3463 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3464 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3465 scsi_cmd->opcode = LOAD_UNLOAD; 3466 if (immediate) 3467 scsi_cmd->immediate = SLU_IMMED; 3468 if (eot) 3469 scsi_cmd->eot_reten_load |= SLU_EOT; 3470 if (reten) 3471 scsi_cmd->eot_reten_load |= SLU_RETEN; 3472 if (load) 3473 scsi_cmd->eot_reten_load |= SLU_LOAD; 3474 3475 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3476 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3477 } 3478 3479 void 3480 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3481 void (*cbfcnp)(struct cam_periph *, union ccb *), 3482 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3483 u_int32_t timeout) 3484 { 3485 struct scsi_rewind *scsi_cmd; 3486 3487 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3488 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3489 scsi_cmd->opcode = REWIND; 3490 if (immediate) 3491 scsi_cmd->immediate = SREW_IMMED; 3492 3493 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3494 0, sense_len, sizeof(*scsi_cmd), timeout); 3495 } 3496 3497 void 3498 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3499 void (*cbfcnp)(struct cam_periph *, union ccb *), 3500 u_int8_t tag_action, scsi_space_code code, 3501 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3502 { 3503 struct scsi_space *scsi_cmd; 3504 3505 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3506 scsi_cmd->opcode = SPACE; 3507 scsi_cmd->code = code; 3508 scsi_ulto3b(count, scsi_cmd->count); 3509 scsi_cmd->control = 0; 3510 3511 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3512 0, sense_len, sizeof(*scsi_cmd), timeout); 3513 } 3514 3515 void 3516 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3517 void (*cbfcnp)(struct cam_periph *, union ccb *), 3518 u_int8_t tag_action, int immediate, int setmark, 3519 u_int32_t num_marks, u_int8_t sense_len, 3520 u_int32_t timeout) 3521 { 3522 struct scsi_write_filemarks *scsi_cmd; 3523 3524 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3525 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3526 scsi_cmd->opcode = WRITE_FILEMARKS; 3527 if (immediate) 3528 scsi_cmd->byte2 |= SWFMRK_IMMED; 3529 if (setmark) 3530 scsi_cmd->byte2 |= SWFMRK_WSMK; 3531 3532 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3533 3534 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3535 0, sense_len, sizeof(*scsi_cmd), timeout); 3536 } 3537 3538 /* 3539 * The reserve and release unit commands differ only by their opcodes. 3540 */ 3541 void 3542 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3543 void (*cbfcnp)(struct cam_periph *, union ccb *), 3544 u_int8_t tag_action, int third_party, 3545 int third_party_id, u_int8_t sense_len, 3546 u_int32_t timeout, int reserve) 3547 { 3548 struct scsi_reserve_release_unit *scsi_cmd; 3549 3550 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3551 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3552 3553 if (reserve) 3554 scsi_cmd->opcode = RESERVE_UNIT; 3555 else 3556 scsi_cmd->opcode = RELEASE_UNIT; 3557 3558 if (third_party) { 3559 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3560 scsi_cmd->lun_thirdparty |= 3561 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3562 } 3563 3564 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3565 0, sense_len, sizeof(*scsi_cmd), timeout); 3566 } 3567 3568 void 3569 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3570 void (*cbfcnp)(struct cam_periph *, union ccb *), 3571 u_int8_t tag_action, int immediate, int long_erase, 3572 u_int8_t sense_len, u_int32_t timeout) 3573 { 3574 struct scsi_erase *scsi_cmd; 3575 3576 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3577 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3578 3579 scsi_cmd->opcode = ERASE; 3580 3581 if (immediate) 3582 scsi_cmd->lun_imm_long |= SE_IMMED; 3583 3584 if (long_erase) 3585 scsi_cmd->lun_imm_long |= SE_LONG; 3586 3587 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3588 0, sense_len, sizeof(*scsi_cmd), timeout); 3589 } 3590 3591 /* 3592 * Read Tape Position command. 3593 */ 3594 void 3595 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3596 void (*cbfcnp)(struct cam_periph *, union ccb *), 3597 u_int8_t tag_action, int hardsoft, 3598 struct scsi_tape_position_data *sbp, 3599 u_int8_t sense_len, u_int32_t timeout) 3600 { 3601 struct scsi_tape_read_position *scmd; 3602 3603 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3604 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3605 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3606 bzero(scmd, sizeof(*scmd)); 3607 scmd->opcode = READ_POSITION; 3608 scmd->byte1 = hardsoft; 3609 } 3610 3611 /* 3612 * Set Tape Position command. 3613 */ 3614 void 3615 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3616 void (*cbfcnp)(struct cam_periph *, union ccb *), 3617 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3618 u_int8_t sense_len, u_int32_t timeout) 3619 { 3620 struct scsi_tape_locate *scmd; 3621 3622 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3623 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3624 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3625 bzero(scmd, sizeof(*scmd)); 3626 scmd->opcode = LOCATE; 3627 if (hardsoft) 3628 scmd->byte1 |= SA_SPOS_BT; 3629 scsi_ulto4b(blkno, scmd->blkaddr); 3630 } 3631