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 static 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_int64_t _last_io_resid; 239 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 240 struct scsi_sense_data _last_ctl_sense; 241 u_int64_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, "SEAGATE", 338 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 339 }, 340 { 341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 342 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 343 }, 344 { 345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 346 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 347 }, 348 { 349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 350 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 351 }, 352 { 353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 354 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 355 }, 356 { 357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 358 " SLR*", "*"}, SA_QUIRK_1FM, 0 359 }, 360 { 361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 362 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 363 }, 364 { 365 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 366 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 367 } 368 }; 369 370 static d_open_t saopen; 371 static d_close_t saclose; 372 static d_strategy_t sastrategy; 373 static d_ioctl_t saioctl; 374 static periph_init_t sainit; 375 static periph_ctor_t saregister; 376 static periph_oninv_t saoninvalidate; 377 static periph_dtor_t sacleanup; 378 static periph_start_t sastart; 379 static void saasync(void *callback_arg, u_int32_t code, 380 struct cam_path *path, void *arg); 381 static void sadone(struct cam_periph *periph, 382 union ccb *start_ccb); 383 static int saerror(union ccb *ccb, u_int32_t cam_flags, 384 u_int32_t sense_flags); 385 static int samarkswanted(struct cam_periph *); 386 static int sacheckeod(struct cam_periph *periph); 387 static int sagetparams(struct cam_periph *periph, 388 sa_params params_to_get, 389 u_int32_t *blocksize, u_int8_t *density, 390 u_int32_t *numblocks, int *buff_mode, 391 u_int8_t *write_protect, u_int8_t *speed, 392 int *comp_supported, int *comp_enabled, 393 u_int32_t *comp_algorithm, 394 sa_comp_t *comp_page); 395 static int sasetparams(struct cam_periph *periph, 396 sa_params params_to_set, 397 u_int32_t blocksize, u_int8_t density, 398 u_int32_t comp_algorithm, 399 u_int32_t sense_flags); 400 static void saprevent(struct cam_periph *periph, int action); 401 static int sarewind(struct cam_periph *periph); 402 static int saspace(struct cam_periph *periph, int count, 403 scsi_space_code code); 404 static int samount(struct cam_periph *, int, struct cdev *); 405 static int saretension(struct cam_periph *periph); 406 static int sareservereleaseunit(struct cam_periph *periph, 407 int reserve); 408 static int saloadunload(struct cam_periph *periph, int load); 409 static int saerase(struct cam_periph *periph, int longerase); 410 static int sawritefilemarks(struct cam_periph *periph, 411 int nmarks, int setmarks); 412 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 413 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 414 415 416 static struct periph_driver sadriver = 417 { 418 sainit, "sa", 419 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 420 }; 421 422 PERIPHDRIVER_DECLARE(sa, sadriver); 423 424 /* For 2.2-stable support */ 425 #ifndef D_TAPE 426 #define D_TAPE 0 427 #endif 428 429 430 static struct cdevsw sa_cdevsw = { 431 .d_version = D_VERSION, 432 .d_open = saopen, 433 .d_close = saclose, 434 .d_read = physread, 435 .d_write = physwrite, 436 .d_ioctl = saioctl, 437 .d_strategy = sastrategy, 438 .d_name = "sa", 439 .d_flags = D_TAPE | D_NEEDGIANT, 440 }; 441 442 static int 443 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 444 { 445 struct cam_periph *periph; 446 struct sa_softc *softc; 447 int error; 448 449 periph = (struct cam_periph *)dev->si_drv1; 450 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 451 return (ENXIO); 452 } 453 454 cam_periph_lock(periph); 455 456 softc = (struct sa_softc *)periph->softc; 457 458 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 459 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 460 461 if (SA_IS_CTRL(dev)) { 462 softc->ctrl_mode = 1; 463 cam_periph_unlock(periph); 464 return (0); 465 } 466 467 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 468 cam_periph_unlock(periph); 469 cam_periph_release(periph); 470 return (error); 471 } 472 473 if (softc->flags & SA_FLAG_OPEN) { 474 error = EBUSY; 475 } else if (softc->flags & SA_FLAG_INVALID) { 476 error = ENXIO; 477 } else { 478 /* 479 * Preserve whether this is a read_only open. 480 */ 481 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 482 483 /* 484 * The function samount ensures media is loaded and ready. 485 * It also does a device RESERVE if the tape isn't yet mounted. 486 * 487 * If the mount fails and this was a non-blocking open, 488 * make this a 'open_pending_mount' action. 489 */ 490 error = samount(periph, flags, dev); 491 if (error && (flags & O_NONBLOCK)) { 492 softc->flags |= SA_FLAG_OPEN; 493 softc->open_pending_mount = 1; 494 cam_periph_unhold(periph); 495 cam_periph_unlock(periph); 496 return (0); 497 } 498 } 499 500 if (error) { 501 cam_periph_unhold(periph); 502 cam_periph_unlock(periph); 503 cam_periph_release(periph); 504 return (error); 505 } 506 507 saprevent(periph, PR_PREVENT); 508 softc->flags |= SA_FLAG_OPEN; 509 510 cam_periph_unhold(periph); 511 cam_periph_unlock(periph); 512 return (error); 513 } 514 515 static int 516 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 517 { 518 struct cam_periph *periph; 519 struct sa_softc *softc; 520 int mode, error, writing, tmp; 521 int closedbits = SA_FLAG_OPEN; 522 523 mode = SAMODE(dev); 524 periph = (struct cam_periph *)dev->si_drv1; 525 if (periph == NULL) 526 return (ENXIO); 527 528 cam_periph_lock(periph); 529 530 softc = (struct sa_softc *)periph->softc; 531 532 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 533 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 534 535 536 softc->open_rdonly = 0; 537 if (SA_IS_CTRL(dev)) { 538 softc->ctrl_mode = 0; 539 cam_periph_unlock(periph); 540 cam_periph_release(periph); 541 return (0); 542 } 543 544 if (softc->open_pending_mount) { 545 softc->flags &= ~SA_FLAG_OPEN; 546 softc->open_pending_mount = 0; 547 cam_periph_unlock(periph); 548 cam_periph_release(periph); 549 return (0); 550 } 551 552 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 553 cam_periph_unlock(periph); 554 return (error); 555 } 556 557 /* 558 * Were we writing the tape? 559 */ 560 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 561 562 /* 563 * See whether or not we need to write filemarks. If this 564 * fails, we probably have to assume we've lost tape 565 * position. 566 */ 567 error = sacheckeod(periph); 568 if (error) { 569 xpt_print(periph->path, 570 "failed to write terminating filemark(s)\n"); 571 softc->flags |= SA_FLAG_TAPE_FROZEN; 572 } 573 574 /* 575 * Whatever we end up doing, allow users to eject tapes from here on. 576 */ 577 saprevent(periph, PR_ALLOW); 578 579 /* 580 * Decide how to end... 581 */ 582 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 583 closedbits |= SA_FLAG_TAPE_FROZEN; 584 } else switch (mode) { 585 case SA_MODE_OFFLINE: 586 /* 587 * An 'offline' close is an unconditional release of 588 * frozen && mount conditions, irrespective of whether 589 * these operations succeeded. The reason for this is 590 * to allow at least some kind of programmatic way 591 * around our state getting all fouled up. If somebody 592 * issues an 'offline' command, that will be allowed 593 * to clear state. 594 */ 595 (void) sarewind(periph); 596 (void) saloadunload(periph, FALSE); 597 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 598 break; 599 case SA_MODE_REWIND: 600 /* 601 * If the rewind fails, return an error- if anyone cares, 602 * but not overwriting any previous error. 603 * 604 * We don't clear the notion of mounted here, but we do 605 * clear the notion of frozen if we successfully rewound. 606 */ 607 tmp = sarewind(periph); 608 if (tmp) { 609 if (error != 0) 610 error = tmp; 611 } else { 612 closedbits |= SA_FLAG_TAPE_FROZEN; 613 } 614 break; 615 case SA_MODE_NOREWIND: 616 /* 617 * If we're not rewinding/unloading the tape, find out 618 * whether we need to back up over one of two filemarks 619 * we wrote (if we wrote two filemarks) so that appends 620 * from this point on will be sane. 621 */ 622 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 623 tmp = saspace(periph, -1, SS_FILEMARKS); 624 if (tmp) { 625 xpt_print(periph->path, "unable to backspace " 626 "over one of double filemarks at end of " 627 "tape\n"); 628 xpt_print(periph->path, "it is possible that " 629 "this device needs a SA_QUIRK_1FM quirk set" 630 "for it\n"); 631 softc->flags |= SA_FLAG_TAPE_FROZEN; 632 } 633 } 634 break; 635 default: 636 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 637 /* NOTREACHED */ 638 break; 639 } 640 641 /* 642 * We wish to note here that there are no more filemarks to be written. 643 */ 644 softc->filemarks = 0; 645 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 646 647 /* 648 * And we are no longer open for business. 649 */ 650 softc->flags &= ~closedbits; 651 652 /* 653 * Inform users if tape state if frozen.... 654 */ 655 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 656 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 657 "REWIND or MTEOM command to clear this state.\n"); 658 } 659 660 /* release the device if it is no longer mounted */ 661 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 662 sareservereleaseunit(periph, FALSE); 663 664 cam_periph_unhold(periph); 665 cam_periph_unlock(periph); 666 cam_periph_release(periph); 667 668 return (error); 669 } 670 671 /* 672 * Actually translate the requested transfer into one the physical driver 673 * can understand. The transfer is described by a buf and will include 674 * only one physical transfer. 675 */ 676 static void 677 sastrategy(struct bio *bp) 678 { 679 struct cam_periph *periph; 680 struct sa_softc *softc; 681 682 bp->bio_resid = bp->bio_bcount; 683 if (SA_IS_CTRL(bp->bio_dev)) { 684 biofinish(bp, NULL, EINVAL); 685 return; 686 } 687 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 688 if (periph == NULL) { 689 biofinish(bp, NULL, ENXIO); 690 return; 691 } 692 cam_periph_lock(periph); 693 694 softc = (struct sa_softc *)periph->softc; 695 696 if (softc->flags & SA_FLAG_INVALID) { 697 cam_periph_unlock(periph); 698 biofinish(bp, NULL, ENXIO); 699 return; 700 } 701 702 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 703 cam_periph_unlock(periph); 704 biofinish(bp, NULL, EPERM); 705 return; 706 } 707 708 /* 709 * This should actually never occur as the write(2) 710 * system call traps attempts to write to a read-only 711 * file descriptor. 712 */ 713 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 714 cam_periph_unlock(periph); 715 biofinish(bp, NULL, EBADF); 716 return; 717 } 718 719 if (softc->open_pending_mount) { 720 int error = samount(periph, 0, bp->bio_dev); 721 if (error) { 722 cam_periph_unlock(periph); 723 biofinish(bp, NULL, ENXIO); 724 return; 725 } 726 saprevent(periph, PR_PREVENT); 727 softc->open_pending_mount = 0; 728 } 729 730 731 /* 732 * If it's a null transfer, return immediately 733 */ 734 if (bp->bio_bcount == 0) { 735 cam_periph_unlock(periph); 736 biodone(bp); 737 return; 738 } 739 740 /* valid request? */ 741 if (softc->flags & SA_FLAG_FIXED) { 742 /* 743 * Fixed block device. The byte count must 744 * be a multiple of our block size. 745 */ 746 if (((softc->blk_mask != ~0) && 747 ((bp->bio_bcount & softc->blk_mask) != 0)) || 748 ((softc->blk_mask == ~0) && 749 ((bp->bio_bcount % softc->min_blk) != 0))) { 750 xpt_print(periph->path, "Invalid request. Fixed block " 751 "device requests must be a multiple of %d bytes\n", 752 softc->min_blk); 753 cam_periph_unlock(periph); 754 biofinish(bp, NULL, EINVAL); 755 return; 756 } 757 } else if ((bp->bio_bcount > softc->max_blk) || 758 (bp->bio_bcount < softc->min_blk) || 759 (bp->bio_bcount & softc->blk_mask) != 0) { 760 761 xpt_print_path(periph->path); 762 printf("Invalid request. Variable block " 763 "device requests must be "); 764 if (softc->blk_mask != 0) { 765 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 766 } 767 printf("between %d and %d bytes\n", softc->min_blk, 768 softc->max_blk); 769 cam_periph_unlock(periph); 770 biofinish(bp, NULL, EINVAL); 771 return; 772 } 773 774 /* 775 * Place it at the end of the queue. 776 */ 777 bioq_insert_tail(&softc->bio_queue, bp); 778 softc->queue_count++; 779 #if 0 780 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 781 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 782 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 783 (bp->bio_cmd == BIO_READ)? "read" : "write")); 784 #endif 785 if (softc->queue_count > 1) { 786 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 787 ("sastrategy: queue count now %d\n", softc->queue_count)); 788 } 789 790 /* 791 * Schedule ourselves for performing the work. 792 */ 793 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 794 cam_periph_unlock(periph); 795 796 return; 797 } 798 799 800 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 801 if (softc->open_pending_mount) { \ 802 error = samount(periph, 0, dev); \ 803 if (error) { \ 804 break; \ 805 } \ 806 saprevent(periph, PR_PREVENT); \ 807 softc->open_pending_mount = 0; \ 808 } 809 810 static int 811 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 812 { 813 struct cam_periph *periph; 814 struct sa_softc *softc; 815 scsi_space_code spaceop; 816 int didlockperiph = 0; 817 int mode; 818 int error = 0; 819 820 mode = SAMODE(dev); 821 error = 0; /* shut up gcc */ 822 spaceop = 0; /* shut up gcc */ 823 824 periph = (struct cam_periph *)dev->si_drv1; 825 if (periph == NULL) 826 return (ENXIO); 827 828 cam_periph_lock(periph); 829 softc = (struct sa_softc *)periph->softc; 830 831 /* 832 * Check for control mode accesses. We allow MTIOCGET and 833 * MTIOCERRSTAT (but need to be the only one open in order 834 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 835 * and MTCOMP (but need to be the only one accessing this 836 * device to run those). 837 */ 838 839 if (SA_IS_CTRL(dev)) { 840 switch (cmd) { 841 case MTIOCGETEOTMODEL: 842 case MTIOCGET: 843 break; 844 case MTIOCERRSTAT: 845 /* 846 * If the periph isn't already locked, lock it 847 * so our MTIOCERRSTAT can reset latched error stats. 848 * 849 * If the periph is already locked, skip it because 850 * we're just getting status and it'll be up to the 851 * other thread that has this device open to do 852 * an MTIOCERRSTAT that would clear latched status. 853 */ 854 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 855 error = cam_periph_hold(periph, PRIBIO|PCATCH); 856 if (error != 0) { 857 cam_periph_unlock(periph); 858 return (error); 859 } 860 didlockperiph = 1; 861 } 862 break; 863 864 case MTIOCTOP: 865 { 866 struct mtop *mt = (struct mtop *) arg; 867 868 /* 869 * Check to make sure it's an OP we can perform 870 * with no media inserted. 871 */ 872 switch (mt->mt_op) { 873 case MTSETBSIZ: 874 case MTSETDNSTY: 875 case MTCOMP: 876 mt = NULL; 877 /* FALLTHROUGH */ 878 default: 879 break; 880 } 881 if (mt != NULL) { 882 break; 883 } 884 /* FALLTHROUGH */ 885 } 886 case MTIOCSETEOTMODEL: 887 /* 888 * We need to acquire the peripheral here rather 889 * than at open time because we are sharing writable 890 * access to data structures. 891 */ 892 error = cam_periph_hold(periph, PRIBIO|PCATCH); 893 if (error != 0) { 894 cam_periph_unlock(periph); 895 return (error); 896 } 897 didlockperiph = 1; 898 break; 899 900 default: 901 cam_periph_unlock(periph); 902 return (EINVAL); 903 } 904 } 905 906 /* 907 * Find the device that the user is talking about 908 */ 909 switch (cmd) { 910 case MTIOCGET: 911 { 912 struct mtget *g = (struct mtget *)arg; 913 914 /* 915 * If this isn't the control mode device, actually go out 916 * and ask the drive again what it's set to. 917 */ 918 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 919 u_int8_t write_protect; 920 int comp_enabled, comp_supported; 921 error = sagetparams(periph, SA_PARAM_ALL, 922 &softc->media_blksize, &softc->media_density, 923 &softc->media_numblks, &softc->buffer_mode, 924 &write_protect, &softc->speed, &comp_supported, 925 &comp_enabled, &softc->comp_algorithm, NULL); 926 if (error) 927 break; 928 if (write_protect) 929 softc->flags |= SA_FLAG_TAPE_WP; 930 else 931 softc->flags &= ~SA_FLAG_TAPE_WP; 932 softc->flags &= ~(SA_FLAG_COMP_SUPP| 933 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 934 if (comp_supported) { 935 if (softc->saved_comp_algorithm == 0) 936 softc->saved_comp_algorithm = 937 softc->comp_algorithm; 938 softc->flags |= SA_FLAG_COMP_SUPP; 939 if (comp_enabled) 940 softc->flags |= SA_FLAG_COMP_ENABLED; 941 } else 942 softc->flags |= SA_FLAG_COMP_UNSUPP; 943 } 944 bzero(g, sizeof(struct mtget)); 945 g->mt_type = MT_ISAR; 946 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 947 g->mt_comp = MT_COMP_UNSUPP; 948 g->mt_comp0 = MT_COMP_UNSUPP; 949 g->mt_comp1 = MT_COMP_UNSUPP; 950 g->mt_comp2 = MT_COMP_UNSUPP; 951 g->mt_comp3 = MT_COMP_UNSUPP; 952 } else { 953 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 954 g->mt_comp = MT_COMP_DISABLED; 955 } else { 956 g->mt_comp = softc->comp_algorithm; 957 } 958 g->mt_comp0 = softc->comp_algorithm; 959 g->mt_comp1 = softc->comp_algorithm; 960 g->mt_comp2 = softc->comp_algorithm; 961 g->mt_comp3 = softc->comp_algorithm; 962 } 963 g->mt_density = softc->media_density; 964 g->mt_density0 = softc->media_density; 965 g->mt_density1 = softc->media_density; 966 g->mt_density2 = softc->media_density; 967 g->mt_density3 = softc->media_density; 968 g->mt_blksiz = softc->media_blksize; 969 g->mt_blksiz0 = softc->media_blksize; 970 g->mt_blksiz1 = softc->media_blksize; 971 g->mt_blksiz2 = softc->media_blksize; 972 g->mt_blksiz3 = softc->media_blksize; 973 g->mt_fileno = softc->fileno; 974 g->mt_blkno = softc->blkno; 975 g->mt_dsreg = (short) softc->dsreg; 976 /* 977 * Yes, we know that this is likely to overflow 978 */ 979 if (softc->last_resid_was_io) { 980 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 981 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 982 softc->last_io_resid = 0; 983 } 984 } 985 } else { 986 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 987 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 988 softc->last_ctl_resid = 0; 989 } 990 } 991 } 992 error = 0; 993 break; 994 } 995 case MTIOCERRSTAT: 996 { 997 struct scsi_tape_errors *sep = 998 &((union mterrstat *)arg)->scsi_errstat; 999 1000 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1001 ("saioctl: MTIOCERRSTAT\n")); 1002 1003 bzero(sep, sizeof(*sep)); 1004 sep->io_resid = softc->last_io_resid; 1005 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1006 sizeof (sep->io_sense)); 1007 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1008 sizeof (sep->io_cdb)); 1009 sep->ctl_resid = softc->last_ctl_resid; 1010 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1011 sizeof (sep->ctl_sense)); 1012 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1013 sizeof (sep->ctl_cdb)); 1014 1015 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1016 didlockperiph) 1017 bzero((caddr_t) &softc->errinfo, 1018 sizeof (softc->errinfo)); 1019 error = 0; 1020 break; 1021 } 1022 case MTIOCTOP: 1023 { 1024 struct mtop *mt; 1025 int count; 1026 1027 PENDING_MOUNT_CHECK(softc, periph, dev); 1028 1029 mt = (struct mtop *)arg; 1030 1031 1032 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1033 ("saioctl: op=0x%x count=0x%x\n", 1034 mt->mt_op, mt->mt_count)); 1035 1036 count = mt->mt_count; 1037 switch (mt->mt_op) { 1038 case MTWEOF: /* write an end-of-file marker */ 1039 /* 1040 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1041 * flag because by keeping track of filemarks 1042 * we have last written we know ehether or not 1043 * we need to write more when we close the device. 1044 */ 1045 error = sawritefilemarks(periph, count, FALSE); 1046 break; 1047 case MTWSS: /* write a setmark */ 1048 error = sawritefilemarks(periph, count, TRUE); 1049 break; 1050 case MTBSR: /* backward space record */ 1051 case MTFSR: /* forward space record */ 1052 case MTBSF: /* backward space file */ 1053 case MTFSF: /* forward space file */ 1054 case MTBSS: /* backward space setmark */ 1055 case MTFSS: /* forward space setmark */ 1056 case MTEOD: /* space to end of recorded medium */ 1057 { 1058 int nmarks; 1059 1060 spaceop = SS_FILEMARKS; 1061 nmarks = softc->filemarks; 1062 error = sacheckeod(periph); 1063 if (error) { 1064 xpt_print(periph->path, 1065 "EOD check prior to spacing failed\n"); 1066 softc->flags |= SA_FLAG_EIO_PENDING; 1067 break; 1068 } 1069 nmarks -= softc->filemarks; 1070 switch(mt->mt_op) { 1071 case MTBSR: 1072 count = -count; 1073 /* FALLTHROUGH */ 1074 case MTFSR: 1075 spaceop = SS_BLOCKS; 1076 break; 1077 case MTBSF: 1078 count = -count; 1079 /* FALLTHROUGH */ 1080 case MTFSF: 1081 break; 1082 case MTBSS: 1083 count = -count; 1084 /* FALLTHROUGH */ 1085 case MTFSS: 1086 spaceop = SS_SETMARKS; 1087 break; 1088 case MTEOD: 1089 spaceop = SS_EOD; 1090 count = 0; 1091 nmarks = 0; 1092 break; 1093 default: 1094 error = EINVAL; 1095 break; 1096 } 1097 if (error) 1098 break; 1099 1100 nmarks = softc->filemarks; 1101 /* 1102 * XXX: Why are we checking again? 1103 */ 1104 error = sacheckeod(periph); 1105 if (error) 1106 break; 1107 nmarks -= softc->filemarks; 1108 error = saspace(periph, count - nmarks, spaceop); 1109 /* 1110 * At this point, clear that we've written the tape 1111 * and that we've written any filemarks. We really 1112 * don't know what the applications wishes to do next- 1113 * the sacheckeod's will make sure we terminated the 1114 * tape correctly if we'd been writing, but the next 1115 * action the user application takes will set again 1116 * whether we need to write filemarks. 1117 */ 1118 softc->flags &= 1119 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1120 softc->filemarks = 0; 1121 break; 1122 } 1123 case MTREW: /* rewind */ 1124 PENDING_MOUNT_CHECK(softc, periph, dev); 1125 (void) sacheckeod(periph); 1126 error = sarewind(periph); 1127 /* see above */ 1128 softc->flags &= 1129 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1130 softc->flags &= ~SA_FLAG_ERR_PENDING; 1131 softc->filemarks = 0; 1132 break; 1133 case MTERASE: /* erase */ 1134 PENDING_MOUNT_CHECK(softc, periph, dev); 1135 error = saerase(periph, count); 1136 softc->flags &= 1137 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1138 softc->flags &= ~SA_FLAG_ERR_PENDING; 1139 break; 1140 case MTRETENS: /* re-tension tape */ 1141 PENDING_MOUNT_CHECK(softc, periph, dev); 1142 error = saretension(periph); 1143 softc->flags &= 1144 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1145 softc->flags &= ~SA_FLAG_ERR_PENDING; 1146 break; 1147 case MTOFFL: /* rewind and put the drive offline */ 1148 1149 PENDING_MOUNT_CHECK(softc, periph, dev); 1150 1151 (void) sacheckeod(periph); 1152 /* see above */ 1153 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1154 softc->filemarks = 0; 1155 1156 error = sarewind(periph); 1157 /* clear the frozen flag anyway */ 1158 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1159 1160 /* 1161 * Be sure to allow media removal before ejecting. 1162 */ 1163 1164 saprevent(periph, PR_ALLOW); 1165 if (error == 0) { 1166 error = saloadunload(periph, FALSE); 1167 if (error == 0) { 1168 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1169 } 1170 } 1171 break; 1172 1173 case MTNOP: /* no operation, sets status only */ 1174 case MTCACHE: /* enable controller cache */ 1175 case MTNOCACHE: /* disable controller cache */ 1176 error = 0; 1177 break; 1178 1179 case MTSETBSIZ: /* Set block size for device */ 1180 1181 PENDING_MOUNT_CHECK(softc, periph, dev); 1182 1183 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1184 0, 0, 0); 1185 if (error == 0) { 1186 softc->last_media_blksize = 1187 softc->media_blksize; 1188 softc->media_blksize = count; 1189 if (count) { 1190 softc->flags |= SA_FLAG_FIXED; 1191 if (powerof2(count)) { 1192 softc->blk_shift = 1193 ffs(count) - 1; 1194 softc->blk_mask = count - 1; 1195 } else { 1196 softc->blk_mask = ~0; 1197 softc->blk_shift = 0; 1198 } 1199 /* 1200 * Make the user's desire 'persistent'. 1201 */ 1202 softc->quirks &= ~SA_QUIRK_VARIABLE; 1203 softc->quirks |= SA_QUIRK_FIXED; 1204 } else { 1205 softc->flags &= ~SA_FLAG_FIXED; 1206 if (softc->max_blk == 0) { 1207 softc->max_blk = ~0; 1208 } 1209 softc->blk_shift = 0; 1210 if (softc->blk_gran != 0) { 1211 softc->blk_mask = 1212 softc->blk_gran - 1; 1213 } else { 1214 softc->blk_mask = 0; 1215 } 1216 /* 1217 * Make the user's desire 'persistent'. 1218 */ 1219 softc->quirks |= SA_QUIRK_VARIABLE; 1220 softc->quirks &= ~SA_QUIRK_FIXED; 1221 } 1222 } 1223 break; 1224 case MTSETDNSTY: /* Set density for device and mode */ 1225 PENDING_MOUNT_CHECK(softc, periph, dev); 1226 1227 if (count > UCHAR_MAX) { 1228 error = EINVAL; 1229 break; 1230 } else { 1231 error = sasetparams(periph, SA_PARAM_DENSITY, 1232 0, count, 0, 0); 1233 } 1234 break; 1235 case MTCOMP: /* enable compression */ 1236 PENDING_MOUNT_CHECK(softc, periph, dev); 1237 /* 1238 * Some devices don't support compression, and 1239 * don't like it if you ask them for the 1240 * compression page. 1241 */ 1242 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1243 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1244 error = ENODEV; 1245 break; 1246 } 1247 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1248 0, 0, count, SF_NO_PRINT); 1249 break; 1250 default: 1251 error = EINVAL; 1252 } 1253 break; 1254 } 1255 case MTIOCIEOT: 1256 case MTIOCEEOT: 1257 error = 0; 1258 break; 1259 case MTIOCRDSPOS: 1260 PENDING_MOUNT_CHECK(softc, periph, dev); 1261 error = sardpos(periph, 0, (u_int32_t *) arg); 1262 break; 1263 case MTIOCRDHPOS: 1264 PENDING_MOUNT_CHECK(softc, periph, dev); 1265 error = sardpos(periph, 1, (u_int32_t *) arg); 1266 break; 1267 case MTIOCSLOCATE: 1268 PENDING_MOUNT_CHECK(softc, periph, dev); 1269 error = sasetpos(periph, 0, (u_int32_t *) arg); 1270 break; 1271 case MTIOCHLOCATE: 1272 PENDING_MOUNT_CHECK(softc, periph, dev); 1273 error = sasetpos(periph, 1, (u_int32_t *) arg); 1274 break; 1275 case MTIOCGETEOTMODEL: 1276 error = 0; 1277 if (softc->quirks & SA_QUIRK_1FM) 1278 mode = 1; 1279 else 1280 mode = 2; 1281 *((u_int32_t *) arg) = mode; 1282 break; 1283 case MTIOCSETEOTMODEL: 1284 error = 0; 1285 switch (*((u_int32_t *) arg)) { 1286 case 1: 1287 softc->quirks &= ~SA_QUIRK_2FM; 1288 softc->quirks |= SA_QUIRK_1FM; 1289 break; 1290 case 2: 1291 softc->quirks &= ~SA_QUIRK_1FM; 1292 softc->quirks |= SA_QUIRK_2FM; 1293 break; 1294 default: 1295 error = EINVAL; 1296 break; 1297 } 1298 break; 1299 default: 1300 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1301 break; 1302 } 1303 1304 /* 1305 * Check to see if we cleared a frozen state 1306 */ 1307 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1308 switch(cmd) { 1309 case MTIOCRDSPOS: 1310 case MTIOCRDHPOS: 1311 case MTIOCSLOCATE: 1312 case MTIOCHLOCATE: 1313 softc->fileno = (daddr_t) -1; 1314 softc->blkno = (daddr_t) -1; 1315 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1316 xpt_print(periph->path, 1317 "tape state now unfrozen.\n"); 1318 break; 1319 default: 1320 break; 1321 } 1322 } 1323 if (didlockperiph) { 1324 cam_periph_unhold(periph); 1325 } 1326 cam_periph_unlock(periph); 1327 return (error); 1328 } 1329 1330 static void 1331 sainit(void) 1332 { 1333 cam_status status; 1334 1335 /* 1336 * Install a global async callback. 1337 */ 1338 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1339 1340 if (status != CAM_REQ_CMP) { 1341 printf("sa: Failed to attach master async callback " 1342 "due to status 0x%x!\n", status); 1343 } 1344 } 1345 1346 static void 1347 saoninvalidate(struct cam_periph *periph) 1348 { 1349 struct sa_softc *softc; 1350 1351 softc = (struct sa_softc *)periph->softc; 1352 1353 /* 1354 * De-register any async callbacks. 1355 */ 1356 xpt_register_async(0, saasync, periph, periph->path); 1357 1358 softc->flags |= SA_FLAG_INVALID; 1359 1360 /* 1361 * Return all queued I/O with ENXIO. 1362 * XXX Handle any transactions queued to the card 1363 * with XPT_ABORT_CCB. 1364 */ 1365 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1366 softc->queue_count = 0; 1367 1368 xpt_print(periph->path, "lost device\n"); 1369 1370 } 1371 1372 static void 1373 sacleanup(struct cam_periph *periph) 1374 { 1375 struct sa_softc *softc; 1376 int i; 1377 1378 softc = (struct sa_softc *)periph->softc; 1379 1380 xpt_print(periph->path, "removing device entry\n"); 1381 devstat_remove_entry(softc->device_stats); 1382 cam_periph_unlock(periph); 1383 destroy_dev(softc->devs.ctl_dev); 1384 for (i = 0; i < SA_NUM_MODES; i++) { 1385 destroy_dev(softc->devs.mode_devs[i].r_dev); 1386 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1387 destroy_dev(softc->devs.mode_devs[i].er_dev); 1388 } 1389 cam_periph_lock(periph); 1390 free(softc, M_SCSISA); 1391 } 1392 1393 static void 1394 saasync(void *callback_arg, u_int32_t code, 1395 struct cam_path *path, void *arg) 1396 { 1397 struct cam_periph *periph; 1398 1399 periph = (struct cam_periph *)callback_arg; 1400 switch (code) { 1401 case AC_FOUND_DEVICE: 1402 { 1403 struct ccb_getdev *cgd; 1404 cam_status status; 1405 1406 cgd = (struct ccb_getdev *)arg; 1407 if (cgd == NULL) 1408 break; 1409 1410 if (cgd->protocol != PROTO_SCSI) 1411 break; 1412 1413 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1414 break; 1415 1416 /* 1417 * Allocate a peripheral instance for 1418 * this device and start the probe 1419 * process. 1420 */ 1421 status = cam_periph_alloc(saregister, saoninvalidate, 1422 sacleanup, sastart, 1423 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1424 saasync, AC_FOUND_DEVICE, cgd); 1425 1426 if (status != CAM_REQ_CMP 1427 && status != CAM_REQ_INPROG) 1428 printf("saasync: Unable to probe new device " 1429 "due to status 0x%x\n", status); 1430 break; 1431 } 1432 default: 1433 cam_periph_async(periph, code, path, arg); 1434 break; 1435 } 1436 } 1437 1438 static cam_status 1439 saregister(struct cam_periph *periph, void *arg) 1440 { 1441 struct sa_softc *softc; 1442 struct ccb_getdev *cgd; 1443 struct ccb_pathinq cpi; 1444 caddr_t match; 1445 int i; 1446 1447 cgd = (struct ccb_getdev *)arg; 1448 if (periph == NULL) { 1449 printf("saregister: periph was NULL!!\n"); 1450 return (CAM_REQ_CMP_ERR); 1451 } 1452 1453 if (cgd == NULL) { 1454 printf("saregister: no getdev CCB, can't register device\n"); 1455 return (CAM_REQ_CMP_ERR); 1456 } 1457 1458 softc = (struct sa_softc *) 1459 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1460 if (softc == NULL) { 1461 printf("saregister: Unable to probe new device. " 1462 "Unable to allocate softc\n"); 1463 return (CAM_REQ_CMP_ERR); 1464 } 1465 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1466 softc->state = SA_STATE_NORMAL; 1467 softc->fileno = (daddr_t) -1; 1468 softc->blkno = (daddr_t) -1; 1469 1470 bioq_init(&softc->bio_queue); 1471 periph->softc = softc; 1472 1473 /* 1474 * See if this device has any quirks. 1475 */ 1476 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1477 (caddr_t)sa_quirk_table, 1478 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1479 sizeof(*sa_quirk_table), scsi_inquiry_match); 1480 1481 if (match != NULL) { 1482 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1483 softc->last_media_blksize = 1484 ((struct sa_quirk_entry *)match)->prefblk; 1485 #ifdef CAMDEBUG 1486 xpt_print(periph->path, "found quirk entry %d\n", 1487 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1488 #endif 1489 } else 1490 softc->quirks = SA_QUIRK_NONE; 1491 1492 bzero(&cpi, sizeof(cpi)); 1493 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1494 cpi.ccb_h.func_code = XPT_PATH_INQ; 1495 xpt_action((union ccb *)&cpi); 1496 1497 /* 1498 * The SA driver supports a blocksize, but we don't know the 1499 * blocksize until we media is inserted. So, set a flag to 1500 * indicate that the blocksize is unavailable right now. 1501 */ 1502 cam_periph_unlock(periph); 1503 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1504 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1505 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1506 1507 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1508 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1509 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1510 softc->devs.ctl_dev->si_drv1 = periph; 1511 1512 for (i = 0; i < SA_NUM_MODES; i++) { 1513 1514 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1515 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1516 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1517 periph->periph_name, periph->unit_number, i); 1518 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1519 1520 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1521 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1522 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1523 periph->periph_name, periph->unit_number, i); 1524 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1525 1526 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1527 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1528 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1529 periph->periph_name, periph->unit_number, i); 1530 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1531 1532 /* 1533 * Make the (well known) aliases for the first mode. 1534 */ 1535 if (i == 0) { 1536 struct cdev *alias; 1537 1538 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1539 "%s%d", periph->periph_name, periph->unit_number); 1540 alias->si_drv1 = periph; 1541 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1542 "n%s%d", periph->periph_name, periph->unit_number); 1543 alias->si_drv1 = periph; 1544 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1545 "e%s%d", periph->periph_name, periph->unit_number); 1546 alias->si_drv1 = periph; 1547 } 1548 } 1549 cam_periph_lock(periph); 1550 1551 /* 1552 * Add an async callback so that we get 1553 * notified if this device goes away. 1554 */ 1555 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1556 1557 xpt_announce_periph(periph, NULL); 1558 1559 return (CAM_REQ_CMP); 1560 } 1561 1562 static void 1563 sastart(struct cam_periph *periph, union ccb *start_ccb) 1564 { 1565 struct sa_softc *softc; 1566 1567 softc = (struct sa_softc *)periph->softc; 1568 1569 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1570 1571 1572 switch (softc->state) { 1573 case SA_STATE_NORMAL: 1574 { 1575 /* Pull a buffer from the queue and get going on it */ 1576 struct bio *bp; 1577 1578 /* 1579 * See if there is a buf with work for us to do.. 1580 */ 1581 bp = bioq_first(&softc->bio_queue); 1582 if (periph->immediate_priority <= periph->pinfo.priority) { 1583 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1584 ("queuing for immediate ccb\n")); 1585 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1586 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1587 periph_links.sle); 1588 periph->immediate_priority = CAM_PRIORITY_NONE; 1589 wakeup(&periph->ccb_list); 1590 } else if (bp == NULL) { 1591 xpt_release_ccb(start_ccb); 1592 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1593 struct bio *done_bp; 1594 again: 1595 softc->queue_count--; 1596 bioq_remove(&softc->bio_queue, bp); 1597 bp->bio_resid = bp->bio_bcount; 1598 done_bp = bp; 1599 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1600 /* 1601 * We now just clear errors in this case 1602 * and let the residual be the notifier. 1603 */ 1604 bp->bio_error = 0; 1605 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1606 /* 1607 * This can only happen if we're reading 1608 * in fixed length mode. In this case, 1609 * we dump the rest of the list the 1610 * same way. 1611 */ 1612 bp->bio_error = 0; 1613 if (bioq_first(&softc->bio_queue) != NULL) { 1614 biodone(done_bp); 1615 goto again; 1616 } 1617 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1618 bp->bio_error = EIO; 1619 bp->bio_flags |= BIO_ERROR; 1620 } 1621 bp = bioq_first(&softc->bio_queue); 1622 /* 1623 * Only if we have no other buffers queued up 1624 * do we clear the pending error flag. 1625 */ 1626 if (bp == NULL) 1627 softc->flags &= ~SA_FLAG_ERR_PENDING; 1628 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1629 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1630 "%d more buffers queued up\n", 1631 (softc->flags & SA_FLAG_ERR_PENDING), 1632 (bp != NULL)? "not " : " ", softc->queue_count)); 1633 xpt_release_ccb(start_ccb); 1634 biodone(done_bp); 1635 } else { 1636 u_int32_t length; 1637 1638 bioq_remove(&softc->bio_queue, bp); 1639 softc->queue_count--; 1640 1641 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1642 if (softc->blk_shift != 0) { 1643 length = 1644 bp->bio_bcount >> softc->blk_shift; 1645 } else if (softc->media_blksize != 0) { 1646 length = bp->bio_bcount / 1647 softc->media_blksize; 1648 } else { 1649 bp->bio_error = EIO; 1650 xpt_print(periph->path, "zero blocksize" 1651 " for FIXED length writes?\n"); 1652 biodone(bp); 1653 break; 1654 } 1655 #if 0 1656 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1657 ("issuing a %d fixed record %s\n", 1658 length, (bp->bio_cmd == BIO_READ)? "read" : 1659 "write")); 1660 #endif 1661 } else { 1662 length = bp->bio_bcount; 1663 #if 0 1664 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1665 ("issuing a %d variable byte %s\n", 1666 length, (bp->bio_cmd == BIO_READ)? "read" : 1667 "write")); 1668 #endif 1669 } 1670 devstat_start_transaction_bio(softc->device_stats, bp); 1671 /* 1672 * Some people have theorized that we should 1673 * suppress illegal length indication if we are 1674 * running in variable block mode so that we don't 1675 * have to request sense every time our requested 1676 * block size is larger than the written block. 1677 * The residual information from the ccb allows 1678 * us to identify this situation anyway. The only 1679 * problem with this is that we will not get 1680 * information about blocks that are larger than 1681 * our read buffer unless we set the block size 1682 * in the mode page to something other than 0. 1683 * 1684 * I believe that this is a non-issue. If user apps 1685 * don't adjust their read size to match our record 1686 * size, that's just life. Anyway, the typical usage 1687 * would be to issue, e.g., 64KB reads and occasionally 1688 * have to do deal with 512 byte or 1KB intermediate 1689 * records. 1690 */ 1691 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1692 MTIO_DSREG_RD : MTIO_DSREG_WR; 1693 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1694 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1695 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1696 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1697 IO_TIMEOUT); 1698 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1699 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1700 start_ccb->ccb_h.ccb_bp = bp; 1701 bp = bioq_first(&softc->bio_queue); 1702 xpt_action(start_ccb); 1703 } 1704 1705 if (bp != NULL) { 1706 /* Have more work to do, so ensure we stay scheduled */ 1707 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1708 } 1709 break; 1710 } 1711 case SA_STATE_ABNORMAL: 1712 default: 1713 panic("state 0x%x in sastart", softc->state); 1714 break; 1715 } 1716 } 1717 1718 1719 static void 1720 sadone(struct cam_periph *periph, union ccb *done_ccb) 1721 { 1722 struct sa_softc *softc; 1723 struct ccb_scsiio *csio; 1724 1725 softc = (struct sa_softc *)periph->softc; 1726 csio = &done_ccb->csio; 1727 switch (CCB_Type(csio)) { 1728 case SA_CCB_BUFFER_IO: 1729 { 1730 struct bio *bp; 1731 int error; 1732 1733 softc->dsreg = MTIO_DSREG_REST; 1734 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1735 error = 0; 1736 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1737 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1738 /* 1739 * A retry was scheduled, so just return. 1740 */ 1741 return; 1742 } 1743 } 1744 1745 if (error == EIO) { 1746 1747 /* 1748 * Catastrophic error. Mark the tape as frozen 1749 * (we no longer know tape position). 1750 * 1751 * Return all queued I/O with EIO, and unfreeze 1752 * our queue so that future transactions that 1753 * attempt to fix this problem can get to the 1754 * device. 1755 * 1756 */ 1757 1758 softc->flags |= SA_FLAG_TAPE_FROZEN; 1759 bioq_flush(&softc->bio_queue, NULL, EIO); 1760 } 1761 if (error != 0) { 1762 bp->bio_resid = bp->bio_bcount; 1763 bp->bio_error = error; 1764 bp->bio_flags |= BIO_ERROR; 1765 /* 1766 * In the error case, position is updated in saerror. 1767 */ 1768 } else { 1769 bp->bio_resid = csio->resid; 1770 bp->bio_error = 0; 1771 if (csio->resid != 0) { 1772 bp->bio_flags |= BIO_ERROR; 1773 } 1774 if (bp->bio_cmd == BIO_WRITE) { 1775 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1776 softc->filemarks = 0; 1777 } 1778 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1779 (softc->blkno != (daddr_t) -1)) { 1780 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1781 u_int32_t l; 1782 if (softc->blk_shift != 0) { 1783 l = bp->bio_bcount >> 1784 softc->blk_shift; 1785 } else { 1786 l = bp->bio_bcount / 1787 softc->media_blksize; 1788 } 1789 softc->blkno += (daddr_t) l; 1790 } else { 1791 softc->blkno++; 1792 } 1793 } 1794 } 1795 /* 1796 * If we had an error (immediate or pending), 1797 * release the device queue now. 1798 */ 1799 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1800 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1801 #ifdef CAMDEBUG 1802 if (error || bp->bio_resid) { 1803 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1804 ("error %d resid %ld count %ld\n", error, 1805 bp->bio_resid, bp->bio_bcount)); 1806 } 1807 #endif 1808 biofinish(bp, softc->device_stats, 0); 1809 break; 1810 } 1811 case SA_CCB_WAITING: 1812 { 1813 /* Caller will release the CCB */ 1814 wakeup(&done_ccb->ccb_h.cbfcnp); 1815 return; 1816 } 1817 } 1818 xpt_release_ccb(done_ccb); 1819 } 1820 1821 /* 1822 * Mount the tape (make sure it's ready for I/O). 1823 */ 1824 static int 1825 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1826 { 1827 struct sa_softc *softc; 1828 union ccb *ccb; 1829 int error; 1830 1831 /* 1832 * oflags can be checked for 'kind' of open (read-only check) - later 1833 * dev can be checked for a control-mode or compression open - later 1834 */ 1835 UNUSED_PARAMETER(oflags); 1836 UNUSED_PARAMETER(dev); 1837 1838 1839 softc = (struct sa_softc *)periph->softc; 1840 1841 /* 1842 * This should determine if something has happend since the last 1843 * open/mount that would invalidate the mount. We do *not* want 1844 * to retry this command- we just want the status. But we only 1845 * do this if we're mounted already- if we're not mounted, 1846 * we don't care about the unit read state and can instead use 1847 * this opportunity to attempt to reserve the tape unit. 1848 */ 1849 1850 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1851 ccb = cam_periph_getccb(periph, 1); 1852 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1853 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1854 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1855 softc->device_stats); 1856 if (error == ENXIO) { 1857 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1858 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1859 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1860 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1861 softc->device_stats); 1862 } else if (error) { 1863 /* 1864 * We don't need to freeze the tape because we 1865 * will now attempt to rewind/load it. 1866 */ 1867 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1868 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1869 xpt_print(periph->path, 1870 "error %d on TUR in samount\n", error); 1871 } 1872 } 1873 } else { 1874 error = sareservereleaseunit(periph, TRUE); 1875 if (error) { 1876 return (error); 1877 } 1878 ccb = cam_periph_getccb(periph, 1); 1879 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1880 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1881 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1882 softc->device_stats); 1883 } 1884 1885 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1886 struct scsi_read_block_limits_data *rblim = NULL; 1887 int comp_enabled, comp_supported; 1888 u_int8_t write_protect, guessing = 0; 1889 1890 /* 1891 * Clear out old state. 1892 */ 1893 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1894 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1895 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1896 softc->filemarks = 0; 1897 1898 /* 1899 * *Very* first off, make sure we're loaded to BOT. 1900 */ 1901 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1902 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1903 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1904 softc->device_stats); 1905 1906 /* 1907 * In case this doesn't work, do a REWIND instead 1908 */ 1909 if (error) { 1910 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1911 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1912 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1913 softc->device_stats); 1914 } 1915 if (error) { 1916 xpt_release_ccb(ccb); 1917 goto exit; 1918 } 1919 1920 /* 1921 * Do a dummy test read to force access to the 1922 * media so that the drive will really know what's 1923 * there. We actually don't really care what the 1924 * blocksize on tape is and don't expect to really 1925 * read a full record. 1926 */ 1927 rblim = (struct scsi_read_block_limits_data *) 1928 malloc(8192, M_SCSISA, M_NOWAIT); 1929 if (rblim == NULL) { 1930 xpt_print(periph->path, "no memory for test read\n"); 1931 xpt_release_ccb(ccb); 1932 error = ENOMEM; 1933 goto exit; 1934 } 1935 1936 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1937 scsi_sa_read_write(&ccb->csio, 0, sadone, 1938 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1939 (void *) rblim, 8192, SSD_FULL_SIZE, 1940 IO_TIMEOUT); 1941 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1942 softc->device_stats); 1943 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1944 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1945 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1946 SF_NO_PRINT | SF_RETRY_UA, 1947 softc->device_stats); 1948 if (error) { 1949 xpt_print(periph->path, 1950 "unable to rewind after test read\n"); 1951 xpt_release_ccb(ccb); 1952 goto exit; 1953 } 1954 } 1955 1956 /* 1957 * Next off, determine block limits. 1958 */ 1959 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1960 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1961 1962 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1963 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 1964 1965 xpt_release_ccb(ccb); 1966 1967 if (error != 0) { 1968 /* 1969 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1970 * a MANDATORY command. Anyway- it doesn't matter- 1971 * we can proceed anyway. 1972 */ 1973 softc->blk_gran = 0; 1974 softc->max_blk = ~0; 1975 softc->min_blk = 0; 1976 } else { 1977 if (softc->scsi_rev >= SCSI_REV_SPC) { 1978 softc->blk_gran = RBL_GRAN(rblim); 1979 } else { 1980 softc->blk_gran = 0; 1981 } 1982 /* 1983 * We take max_blk == min_blk to mean a default to 1984 * fixed mode- but note that whatever we get out of 1985 * sagetparams below will actually determine whether 1986 * we are actually *in* fixed mode. 1987 */ 1988 softc->max_blk = scsi_3btoul(rblim->maximum); 1989 softc->min_blk = scsi_2btoul(rblim->minimum); 1990 1991 1992 } 1993 /* 1994 * Next, perform a mode sense to determine 1995 * current density, blocksize, compression etc. 1996 */ 1997 error = sagetparams(periph, SA_PARAM_ALL, 1998 &softc->media_blksize, 1999 &softc->media_density, 2000 &softc->media_numblks, 2001 &softc->buffer_mode, &write_protect, 2002 &softc->speed, &comp_supported, 2003 &comp_enabled, &softc->comp_algorithm, 2004 NULL); 2005 2006 if (error != 0) { 2007 /* 2008 * We could work a little harder here. We could 2009 * adjust our attempts to get information. It 2010 * might be an ancient tape drive. If someone 2011 * nudges us, we'll do that. 2012 */ 2013 goto exit; 2014 } 2015 2016 /* 2017 * If no quirk has determined that this is a device that is 2018 * preferred to be in fixed or variable mode, now is the time 2019 * to find out. 2020 */ 2021 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2022 guessing = 1; 2023 /* 2024 * This could be expensive to find out. Luckily we 2025 * only need to do this once. If we start out in 2026 * 'default' mode, try and set ourselves to one 2027 * of the densities that would determine a wad 2028 * of other stuff. Go from highest to lowest. 2029 */ 2030 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2031 int i; 2032 static u_int8_t ctry[] = { 2033 SCSI_DENSITY_HALFINCH_PE, 2034 SCSI_DENSITY_HALFINCH_6250C, 2035 SCSI_DENSITY_HALFINCH_6250, 2036 SCSI_DENSITY_HALFINCH_1600, 2037 SCSI_DENSITY_HALFINCH_800, 2038 SCSI_DENSITY_QIC_4GB, 2039 SCSI_DENSITY_QIC_2GB, 2040 SCSI_DENSITY_QIC_525_320, 2041 SCSI_DENSITY_QIC_150, 2042 SCSI_DENSITY_QIC_120, 2043 SCSI_DENSITY_QIC_24, 2044 SCSI_DENSITY_QIC_11_9TRK, 2045 SCSI_DENSITY_QIC_11_4TRK, 2046 SCSI_DENSITY_QIC_1320, 2047 SCSI_DENSITY_QIC_3080, 2048 0 2049 }; 2050 for (i = 0; ctry[i]; i++) { 2051 error = sasetparams(periph, 2052 SA_PARAM_DENSITY, 0, ctry[i], 2053 0, SF_NO_PRINT); 2054 if (error == 0) { 2055 softc->media_density = ctry[i]; 2056 break; 2057 } 2058 } 2059 } 2060 switch (softc->media_density) { 2061 case SCSI_DENSITY_QIC_11_4TRK: 2062 case SCSI_DENSITY_QIC_11_9TRK: 2063 case SCSI_DENSITY_QIC_24: 2064 case SCSI_DENSITY_QIC_120: 2065 case SCSI_DENSITY_QIC_150: 2066 case SCSI_DENSITY_QIC_525_320: 2067 case SCSI_DENSITY_QIC_1320: 2068 case SCSI_DENSITY_QIC_3080: 2069 softc->quirks &= ~SA_QUIRK_2FM; 2070 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2071 softc->last_media_blksize = 512; 2072 break; 2073 case SCSI_DENSITY_QIC_4GB: 2074 case SCSI_DENSITY_QIC_2GB: 2075 softc->quirks &= ~SA_QUIRK_2FM; 2076 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2077 softc->last_media_blksize = 1024; 2078 break; 2079 default: 2080 softc->last_media_blksize = 2081 softc->media_blksize; 2082 softc->quirks |= SA_QUIRK_VARIABLE; 2083 break; 2084 } 2085 } 2086 2087 /* 2088 * If no quirk has determined that this is a device that needs 2089 * to have 2 Filemarks at EOD, now is the time to find out. 2090 */ 2091 2092 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2093 switch (softc->media_density) { 2094 case SCSI_DENSITY_HALFINCH_800: 2095 case SCSI_DENSITY_HALFINCH_1600: 2096 case SCSI_DENSITY_HALFINCH_6250: 2097 case SCSI_DENSITY_HALFINCH_6250C: 2098 case SCSI_DENSITY_HALFINCH_PE: 2099 softc->quirks &= ~SA_QUIRK_1FM; 2100 softc->quirks |= SA_QUIRK_2FM; 2101 break; 2102 default: 2103 break; 2104 } 2105 } 2106 2107 /* 2108 * Now validate that some info we got makes sense. 2109 */ 2110 if ((softc->max_blk < softc->media_blksize) || 2111 (softc->min_blk > softc->media_blksize && 2112 softc->media_blksize)) { 2113 xpt_print(periph->path, 2114 "BLOCK LIMITS (%d..%d) could not match current " 2115 "block settings (%d)- adjusting\n", softc->min_blk, 2116 softc->max_blk, softc->media_blksize); 2117 softc->max_blk = softc->min_blk = 2118 softc->media_blksize; 2119 } 2120 2121 /* 2122 * Now put ourselves into the right frame of mind based 2123 * upon quirks... 2124 */ 2125 tryagain: 2126 /* 2127 * If we want to be in FIXED mode and our current blocksize 2128 * is not equal to our last blocksize (if nonzero), try and 2129 * set ourselves to this last blocksize (as the 'preferred' 2130 * block size). The initial quirkmatch at registry sets the 2131 * initial 'last' blocksize. If, for whatever reason, this 2132 * 'last' blocksize is zero, set the blocksize to 512, 2133 * or min_blk if that's larger. 2134 */ 2135 if ((softc->quirks & SA_QUIRK_FIXED) && 2136 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2137 (softc->media_blksize != softc->last_media_blksize)) { 2138 softc->media_blksize = softc->last_media_blksize; 2139 if (softc->media_blksize == 0) { 2140 softc->media_blksize = 512; 2141 if (softc->media_blksize < softc->min_blk) { 2142 softc->media_blksize = softc->min_blk; 2143 } 2144 } 2145 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2146 softc->media_blksize, 0, 0, SF_NO_PRINT); 2147 if (error) { 2148 xpt_print(periph->path, 2149 "unable to set fixed blocksize to %d\n", 2150 softc->media_blksize); 2151 goto exit; 2152 } 2153 } 2154 2155 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2156 (softc->media_blksize != 0)) { 2157 softc->last_media_blksize = softc->media_blksize; 2158 softc->media_blksize = 0; 2159 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2160 0, 0, 0, SF_NO_PRINT); 2161 if (error) { 2162 /* 2163 * If this fails and we were guessing, just 2164 * assume that we got it wrong and go try 2165 * fixed block mode. Don't even check against 2166 * density code at this point. 2167 */ 2168 if (guessing) { 2169 softc->quirks &= ~SA_QUIRK_VARIABLE; 2170 softc->quirks |= SA_QUIRK_FIXED; 2171 if (softc->last_media_blksize == 0) 2172 softc->last_media_blksize = 512; 2173 goto tryagain; 2174 } 2175 xpt_print(periph->path, 2176 "unable to set variable blocksize\n"); 2177 goto exit; 2178 } 2179 } 2180 2181 /* 2182 * Now that we have the current block size, 2183 * set up some parameters for sastart's usage. 2184 */ 2185 if (softc->media_blksize) { 2186 softc->flags |= SA_FLAG_FIXED; 2187 if (powerof2(softc->media_blksize)) { 2188 softc->blk_shift = 2189 ffs(softc->media_blksize) - 1; 2190 softc->blk_mask = softc->media_blksize - 1; 2191 } else { 2192 softc->blk_mask = ~0; 2193 softc->blk_shift = 0; 2194 } 2195 } else { 2196 /* 2197 * The SCSI-3 spec allows 0 to mean "unspecified". 2198 * The SCSI-1 spec allows 0 to mean 'infinite'. 2199 * 2200 * Either works here. 2201 */ 2202 if (softc->max_blk == 0) { 2203 softc->max_blk = ~0; 2204 } 2205 softc->blk_shift = 0; 2206 if (softc->blk_gran != 0) { 2207 softc->blk_mask = softc->blk_gran - 1; 2208 } else { 2209 softc->blk_mask = 0; 2210 } 2211 } 2212 2213 if (write_protect) 2214 softc->flags |= SA_FLAG_TAPE_WP; 2215 2216 if (comp_supported) { 2217 if (softc->saved_comp_algorithm == 0) 2218 softc->saved_comp_algorithm = 2219 softc->comp_algorithm; 2220 softc->flags |= SA_FLAG_COMP_SUPP; 2221 if (comp_enabled) 2222 softc->flags |= SA_FLAG_COMP_ENABLED; 2223 } else 2224 softc->flags |= SA_FLAG_COMP_UNSUPP; 2225 2226 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2227 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2228 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2229 0, 0, SF_NO_PRINT); 2230 if (error == 0) { 2231 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2232 } else { 2233 xpt_print(periph->path, 2234 "unable to set buffered mode\n"); 2235 } 2236 error = 0; /* not an error */ 2237 } 2238 2239 2240 if (error == 0) { 2241 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2242 } 2243 exit: 2244 if (rblim != NULL) 2245 free(rblim, M_SCSISA); 2246 2247 if (error != 0) { 2248 softc->dsreg = MTIO_DSREG_NIL; 2249 } else { 2250 softc->fileno = softc->blkno = 0; 2251 softc->dsreg = MTIO_DSREG_REST; 2252 } 2253 #ifdef SA_1FM_AT_EOD 2254 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2255 softc->quirks |= SA_QUIRK_1FM; 2256 #else 2257 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2258 softc->quirks |= SA_QUIRK_2FM; 2259 #endif 2260 } else 2261 xpt_release_ccb(ccb); 2262 2263 /* 2264 * If we return an error, we're not mounted any more, 2265 * so release any device reservation. 2266 */ 2267 if (error != 0) { 2268 (void) sareservereleaseunit(periph, FALSE); 2269 } else { 2270 /* 2271 * Clear I/O residual. 2272 */ 2273 softc->last_io_resid = 0; 2274 softc->last_ctl_resid = 0; 2275 } 2276 return (error); 2277 } 2278 2279 /* 2280 * How many filemarks do we need to write if we were to terminate the 2281 * tape session right now? Note that this can be a negative number 2282 */ 2283 2284 static int 2285 samarkswanted(struct cam_periph *periph) 2286 { 2287 int markswanted; 2288 struct sa_softc *softc; 2289 2290 softc = (struct sa_softc *)periph->softc; 2291 markswanted = 0; 2292 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2293 markswanted++; 2294 if (softc->quirks & SA_QUIRK_2FM) 2295 markswanted++; 2296 } 2297 markswanted -= softc->filemarks; 2298 return (markswanted); 2299 } 2300 2301 static int 2302 sacheckeod(struct cam_periph *periph) 2303 { 2304 int error; 2305 int markswanted; 2306 2307 markswanted = samarkswanted(periph); 2308 2309 if (markswanted > 0) { 2310 error = sawritefilemarks(periph, markswanted, FALSE); 2311 } else { 2312 error = 0; 2313 } 2314 return (error); 2315 } 2316 2317 static int 2318 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2319 { 2320 static const char *toobig = 2321 "%d-byte tape record bigger than supplied buffer\n"; 2322 struct cam_periph *periph; 2323 struct sa_softc *softc; 2324 struct ccb_scsiio *csio; 2325 struct scsi_sense_data *sense; 2326 uint64_t resid = 0; 2327 int64_t info = 0; 2328 cam_status status; 2329 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 2330 int sense_len; 2331 uint8_t stream_bits; 2332 2333 periph = xpt_path_periph(ccb->ccb_h.path); 2334 softc = (struct sa_softc *)periph->softc; 2335 csio = &ccb->csio; 2336 sense = &csio->sense_data; 2337 sense_len = csio->sense_len - csio->sense_resid; 2338 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 2339 &asc, &ascq, /*show_errors*/ 1); 2340 if (asc != -1 && ascq != -1) 2341 aqvalid = 1; 2342 else 2343 aqvalid = 0; 2344 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 2345 stream_valid = 1; 2346 else 2347 stream_valid = 0; 2348 error = 0; 2349 2350 status = csio->ccb_h.status & CAM_STATUS_MASK; 2351 2352 /* 2353 * Calculate/latch up, any residuals... We do this in a funny 2-step 2354 * so we can print stuff here if we have CAM_DEBUG enabled for this 2355 * unit. 2356 */ 2357 if (status == CAM_SCSI_STATUS_ERROR) { 2358 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 2359 &info) == 0) { 2360 if ((softc->flags & SA_FLAG_FIXED) != 0) 2361 resid *= softc->media_blksize; 2362 } else { 2363 resid = csio->dxfer_len; 2364 info = resid; 2365 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2366 if (softc->media_blksize) 2367 info /= softc->media_blksize; 2368 } 2369 } 2370 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2371 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2372 sizeof (struct scsi_sense_data)); 2373 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2374 (int) csio->cdb_len); 2375 softc->last_io_resid = resid; 2376 softc->last_resid_was_io = 1; 2377 } else { 2378 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2379 sizeof (struct scsi_sense_data)); 2380 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2381 (int) csio->cdb_len); 2382 softc->last_ctl_resid = resid; 2383 softc->last_resid_was_io = 0; 2384 } 2385 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2386 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 2387 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2388 sense_key, asc, ascq, status, 2389 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 2390 csio->dxfer_len)); 2391 } else { 2392 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2393 ("Cam Status 0x%x\n", status)); 2394 } 2395 2396 switch (status) { 2397 case CAM_REQ_CMP: 2398 return (0); 2399 case CAM_SCSI_STATUS_ERROR: 2400 /* 2401 * If a read/write command, we handle it here. 2402 */ 2403 if (CCB_Type(csio) != SA_CCB_WAITING) { 2404 break; 2405 } 2406 /* 2407 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2408 * on a non read/write command, we assume it's not an error 2409 * and propagate the residule and return. 2410 */ 2411 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2412 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2413 csio->resid = resid; 2414 QFRLS(ccb); 2415 return (0); 2416 } 2417 /* 2418 * Otherwise, we let the common code handle this. 2419 */ 2420 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2421 2422 /* 2423 * XXX: To Be Fixed 2424 * We cannot depend upon CAM honoring retry counts for these. 2425 */ 2426 case CAM_SCSI_BUS_RESET: 2427 case CAM_BDR_SENT: 2428 if (ccb->ccb_h.retry_count <= 0) { 2429 return (EIO); 2430 } 2431 /* FALLTHROUGH */ 2432 default: 2433 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2434 } 2435 2436 /* 2437 * Handle filemark, end of tape, mismatched record sizes.... 2438 * From this point out, we're only handling read/write cases. 2439 * Handle writes && reads differently. 2440 */ 2441 2442 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2443 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2444 csio->resid = resid; 2445 error = ENOSPC; 2446 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 2447 softc->flags |= SA_FLAG_EOM_PENDING; 2448 /* 2449 * Grotesque as it seems, the few times 2450 * I've actually seen a non-zero resid, 2451 * the tape drive actually lied and had 2452 * written all the data!. 2453 */ 2454 csio->resid = 0; 2455 } 2456 } else { 2457 csio->resid = resid; 2458 if (sense_key == SSD_KEY_BLANK_CHECK) { 2459 if (softc->quirks & SA_QUIRK_1FM) { 2460 error = 0; 2461 softc->flags |= SA_FLAG_EOM_PENDING; 2462 } else { 2463 error = EIO; 2464 } 2465 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 2466 if (softc->flags & SA_FLAG_FIXED) { 2467 error = -1; 2468 softc->flags |= SA_FLAG_EOF_PENDING; 2469 } 2470 /* 2471 * Unconditionally, if we detected a filemark on a read, 2472 * mark that we've run moved a file ahead. 2473 */ 2474 if (softc->fileno != (daddr_t) -1) { 2475 softc->fileno++; 2476 softc->blkno = 0; 2477 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2478 } 2479 } 2480 } 2481 2482 /* 2483 * Incorrect Length usually applies to read, but can apply to writes. 2484 */ 2485 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 2486 if (info < 0) { 2487 xpt_print(csio->ccb_h.path, toobig, 2488 csio->dxfer_len - info); 2489 csio->resid = csio->dxfer_len; 2490 error = EIO; 2491 } else { 2492 csio->resid = resid; 2493 if (softc->flags & SA_FLAG_FIXED) { 2494 softc->flags |= SA_FLAG_EIO_PENDING; 2495 } 2496 /* 2497 * Bump the block number if we hadn't seen a filemark. 2498 * Do this independent of errors (we've moved anyway). 2499 */ 2500 if ((stream_valid == 0) || 2501 (stream_bits & SSD_FILEMARK) == 0) { 2502 if (softc->blkno != (daddr_t) -1) { 2503 softc->blkno++; 2504 csio->ccb_h.ccb_pflags |= 2505 SA_POSITION_UPDATED; 2506 } 2507 } 2508 } 2509 } 2510 2511 if (error <= 0) { 2512 /* 2513 * Unfreeze the queue if frozen as we're not returning anything 2514 * to our waiters that would indicate an I/O error has occurred 2515 * (yet). 2516 */ 2517 QFRLS(ccb); 2518 error = 0; 2519 } 2520 return (error); 2521 } 2522 2523 static int 2524 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2525 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2526 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2527 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2528 sa_comp_t *tcs) 2529 { 2530 union ccb *ccb; 2531 void *mode_buffer; 2532 struct scsi_mode_header_6 *mode_hdr; 2533 struct scsi_mode_blk_desc *mode_blk; 2534 int mode_buffer_len; 2535 struct sa_softc *softc; 2536 u_int8_t cpage; 2537 int error; 2538 cam_status status; 2539 2540 softc = (struct sa_softc *)periph->softc; 2541 ccb = cam_periph_getccb(periph, 1); 2542 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2543 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2544 else 2545 cpage = SA_DATA_COMPRESSION_PAGE; 2546 2547 retry: 2548 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2549 2550 if (params_to_get & SA_PARAM_COMPRESSION) { 2551 if (softc->quirks & SA_QUIRK_NOCOMP) { 2552 *comp_supported = FALSE; 2553 params_to_get &= ~SA_PARAM_COMPRESSION; 2554 } else 2555 mode_buffer_len += sizeof (sa_comp_t); 2556 } 2557 2558 /* XXX Fix M_NOWAIT */ 2559 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2560 if (mode_buffer == NULL) { 2561 xpt_release_ccb(ccb); 2562 return (ENOMEM); 2563 } 2564 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2565 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2566 2567 /* it is safe to retry this */ 2568 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2569 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2570 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2571 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2572 2573 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2574 softc->device_stats); 2575 2576 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2577 2578 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2579 /* 2580 * Hmm. Let's see if we can try another page... 2581 * If we've already done that, give up on compression 2582 * for this device and remember this for the future 2583 * and attempt the request without asking for compression 2584 * info. 2585 */ 2586 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2587 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2588 goto retry; 2589 } 2590 softc->quirks |= SA_QUIRK_NOCOMP; 2591 free(mode_buffer, M_SCSISA); 2592 goto retry; 2593 } else if (status == CAM_SCSI_STATUS_ERROR) { 2594 /* Tell the user about the fatal error. */ 2595 scsi_sense_print(&ccb->csio); 2596 goto sagetparamsexit; 2597 } 2598 2599 /* 2600 * If the user only wants the compression information, and 2601 * the device doesn't send back the block descriptor, it's 2602 * no big deal. If the user wants more than just 2603 * compression, though, and the device doesn't pass back the 2604 * block descriptor, we need to send another mode sense to 2605 * get the block descriptor. 2606 */ 2607 if ((mode_hdr->blk_desc_len == 0) && 2608 (params_to_get & SA_PARAM_COMPRESSION) && 2609 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2610 2611 /* 2612 * Decrease the mode buffer length by the size of 2613 * the compression page, to make sure the data 2614 * there doesn't get overwritten. 2615 */ 2616 mode_buffer_len -= sizeof (sa_comp_t); 2617 2618 /* 2619 * Now move the compression page that we presumably 2620 * got back down the memory chunk a little bit so 2621 * it doesn't get spammed. 2622 */ 2623 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2624 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2625 2626 /* 2627 * Now, we issue another mode sense and just ask 2628 * for the block descriptor, etc. 2629 */ 2630 2631 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2632 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2633 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2634 SCSIOP_TIMEOUT); 2635 2636 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2637 softc->device_stats); 2638 2639 if (error != 0) 2640 goto sagetparamsexit; 2641 } 2642 2643 if (params_to_get & SA_PARAM_BLOCKSIZE) 2644 *blocksize = scsi_3btoul(mode_blk->blklen); 2645 2646 if (params_to_get & SA_PARAM_NUMBLOCKS) 2647 *numblocks = scsi_3btoul(mode_blk->nblocks); 2648 2649 if (params_to_get & SA_PARAM_BUFF_MODE) 2650 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2651 2652 if (params_to_get & SA_PARAM_DENSITY) 2653 *density = mode_blk->density; 2654 2655 if (params_to_get & SA_PARAM_WP) 2656 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2657 2658 if (params_to_get & SA_PARAM_SPEED) 2659 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2660 2661 if (params_to_get & SA_PARAM_COMPRESSION) { 2662 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2663 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2664 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2665 *comp_supported = 2666 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2667 *comp_enabled = 2668 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2669 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2670 } else { 2671 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2672 /* 2673 * We don't really know whether this device supports 2674 * Data Compression if the algorithm field is 2675 * zero. Just say we do. 2676 */ 2677 *comp_supported = TRUE; 2678 *comp_enabled = 2679 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2680 *comp_algorithm = cp->sel_comp_alg; 2681 } 2682 if (tcs != NULL) 2683 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2684 } 2685 2686 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2687 int idx; 2688 char *xyz = mode_buffer; 2689 xpt_print_path(periph->path); 2690 printf("Mode Sense Data="); 2691 for (idx = 0; idx < mode_buffer_len; idx++) 2692 printf(" 0x%02x", xyz[idx] & 0xff); 2693 printf("\n"); 2694 } 2695 2696 sagetparamsexit: 2697 2698 xpt_release_ccb(ccb); 2699 free(mode_buffer, M_SCSISA); 2700 return (error); 2701 } 2702 2703 /* 2704 * The purpose of this function is to set one of four different parameters 2705 * for a tape drive: 2706 * - blocksize 2707 * - density 2708 * - compression / compression algorithm 2709 * - buffering mode 2710 * 2711 * The assumption is that this will be called from saioctl(), and therefore 2712 * from a process context. Thus the waiting malloc calls below. If that 2713 * assumption ever changes, the malloc calls should be changed to be 2714 * NOWAIT mallocs. 2715 * 2716 * Any or all of the four parameters may be set when this function is 2717 * called. It should handle setting more than one parameter at once. 2718 */ 2719 static int 2720 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2721 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2722 u_int32_t sense_flags) 2723 { 2724 struct sa_softc *softc; 2725 u_int32_t current_blocksize; 2726 u_int32_t current_calg; 2727 u_int8_t current_density; 2728 u_int8_t current_speed; 2729 int comp_enabled, comp_supported; 2730 void *mode_buffer; 2731 int mode_buffer_len; 2732 struct scsi_mode_header_6 *mode_hdr; 2733 struct scsi_mode_blk_desc *mode_blk; 2734 sa_comp_t *ccomp, *cpage; 2735 int buff_mode; 2736 union ccb *ccb = NULL; 2737 int error; 2738 2739 softc = (struct sa_softc *)periph->softc; 2740 2741 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2742 if (ccomp == NULL) 2743 return (ENOMEM); 2744 2745 /* 2746 * Since it doesn't make sense to set the number of blocks, or 2747 * write protection, we won't try to get the current value. We 2748 * always want to get the blocksize, so we can set it back to the 2749 * proper value. 2750 */ 2751 error = sagetparams(periph, 2752 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2753 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2754 ¤t_speed, &comp_supported, &comp_enabled, 2755 ¤t_calg, ccomp); 2756 2757 if (error != 0) { 2758 free(ccomp, M_SCSISA); 2759 return (error); 2760 } 2761 2762 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2763 if (params_to_set & SA_PARAM_COMPRESSION) 2764 mode_buffer_len += sizeof (sa_comp_t); 2765 2766 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2767 if (mode_buffer == NULL) { 2768 free(ccomp, M_SCSISA); 2769 return (ENOMEM); 2770 } 2771 2772 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2773 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2774 2775 ccb = cam_periph_getccb(periph, 1); 2776 2777 retry: 2778 2779 if (params_to_set & SA_PARAM_COMPRESSION) { 2780 if (mode_blk) { 2781 cpage = (sa_comp_t *)&mode_blk[1]; 2782 } else { 2783 cpage = (sa_comp_t *)&mode_hdr[1]; 2784 } 2785 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2786 cpage->hdr.pagecode &= ~0x80; 2787 } else 2788 cpage = NULL; 2789 2790 /* 2791 * If the caller wants us to set the blocksize, use the one they 2792 * pass in. Otherwise, use the blocksize we got back from the 2793 * mode select above. 2794 */ 2795 if (mode_blk) { 2796 if (params_to_set & SA_PARAM_BLOCKSIZE) 2797 scsi_ulto3b(blocksize, mode_blk->blklen); 2798 else 2799 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2800 2801 /* 2802 * Set density if requested, else preserve old density. 2803 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2804 * devices, else density we've latched up in our softc. 2805 */ 2806 if (params_to_set & SA_PARAM_DENSITY) { 2807 mode_blk->density = density; 2808 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2809 mode_blk->density = SCSI_SAME_DENSITY; 2810 } else { 2811 mode_blk->density = softc->media_density; 2812 } 2813 } 2814 2815 /* 2816 * For mode selects, these two fields must be zero. 2817 */ 2818 mode_hdr->data_length = 0; 2819 mode_hdr->medium_type = 0; 2820 2821 /* set the speed to the current value */ 2822 mode_hdr->dev_spec = current_speed; 2823 2824 /* if set, set single-initiator buffering mode */ 2825 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2826 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2827 } 2828 2829 if (mode_blk) 2830 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2831 else 2832 mode_hdr->blk_desc_len = 0; 2833 2834 /* 2835 * First, if the user wants us to set the compression algorithm or 2836 * just turn compression on, check to make sure that this drive 2837 * supports compression. 2838 */ 2839 if (params_to_set & SA_PARAM_COMPRESSION) { 2840 /* 2841 * If the compression algorithm is 0, disable compression. 2842 * If the compression algorithm is non-zero, enable 2843 * compression and set the compression type to the 2844 * specified compression algorithm, unless the algorithm is 2845 * MT_COMP_ENABLE. In that case, we look at the 2846 * compression algorithm that is currently set and if it is 2847 * non-zero, we leave it as-is. If it is zero, and we have 2848 * saved a compression algorithm from a time when 2849 * compression was enabled before, set the compression to 2850 * the saved value. 2851 */ 2852 switch (ccomp->hdr.pagecode & ~0x80) { 2853 case SA_DEVICE_CONFIGURATION_PAGE: 2854 { 2855 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2856 if (calg == 0) { 2857 dcp->sel_comp_alg = SA_COMP_NONE; 2858 break; 2859 } 2860 if (calg != MT_COMP_ENABLE) { 2861 dcp->sel_comp_alg = calg; 2862 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2863 softc->saved_comp_algorithm != 0) { 2864 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2865 } 2866 break; 2867 } 2868 case SA_DATA_COMPRESSION_PAGE: 2869 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2870 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2871 if (calg == 0) { 2872 /* 2873 * Disable compression, but leave the 2874 * decompression and the capability bit 2875 * alone. 2876 */ 2877 dcp->dce_and_dcc = SA_DCP_DCC; 2878 dcp->dde_and_red |= SA_DCP_DDE; 2879 break; 2880 } 2881 /* enable compression && decompression */ 2882 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2883 dcp->dde_and_red |= SA_DCP_DDE; 2884 /* 2885 * If there, use compression algorithm from caller. 2886 * Otherwise, if there's a saved compression algorithm 2887 * and there is no current algorithm, use the saved 2888 * algorithm. Else parrot back what we got and hope 2889 * for the best. 2890 */ 2891 if (calg != MT_COMP_ENABLE) { 2892 scsi_ulto4b(calg, dcp->comp_algorithm); 2893 scsi_ulto4b(calg, dcp->decomp_algorithm); 2894 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2895 softc->saved_comp_algorithm != 0) { 2896 scsi_ulto4b(softc->saved_comp_algorithm, 2897 dcp->comp_algorithm); 2898 scsi_ulto4b(softc->saved_comp_algorithm, 2899 dcp->decomp_algorithm); 2900 } 2901 break; 2902 } 2903 /* 2904 * Compression does not appear to be supported- 2905 * at least via the DATA COMPRESSION page. It 2906 * would be too much to ask us to believe that 2907 * the page itself is supported, but incorrectly 2908 * reports an ability to manipulate data compression, 2909 * so we'll assume that this device doesn't support 2910 * compression. We can just fall through for that. 2911 */ 2912 /* FALLTHROUGH */ 2913 default: 2914 /* 2915 * The drive doesn't seem to support compression, 2916 * so turn off the set compression bit. 2917 */ 2918 params_to_set &= ~SA_PARAM_COMPRESSION; 2919 xpt_print(periph->path, 2920 "device does not seem to support compression\n"); 2921 2922 /* 2923 * If that was the only thing the user wanted us to set, 2924 * clean up allocated resources and return with 2925 * 'operation not supported'. 2926 */ 2927 if (params_to_set == SA_PARAM_NONE) { 2928 free(mode_buffer, M_SCSISA); 2929 xpt_release_ccb(ccb); 2930 return (ENODEV); 2931 } 2932 2933 /* 2934 * That wasn't the only thing the user wanted us to set. 2935 * So, decrease the stated mode buffer length by the 2936 * size of the compression mode page. 2937 */ 2938 mode_buffer_len -= sizeof(sa_comp_t); 2939 } 2940 } 2941 2942 /* It is safe to retry this operation */ 2943 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2944 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2945 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2946 2947 error = cam_periph_runccb(ccb, saerror, 0, 2948 sense_flags, softc->device_stats); 2949 2950 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2951 int idx; 2952 char *xyz = mode_buffer; 2953 xpt_print_path(periph->path); 2954 printf("Err%d, Mode Select Data=", error); 2955 for (idx = 0; idx < mode_buffer_len; idx++) 2956 printf(" 0x%02x", xyz[idx] & 0xff); 2957 printf("\n"); 2958 } 2959 2960 2961 if (error) { 2962 /* 2963 * If we can, try without setting density/blocksize. 2964 */ 2965 if (mode_blk) { 2966 if ((params_to_set & 2967 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2968 mode_blk = NULL; 2969 goto retry; 2970 } 2971 } else { 2972 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2973 cpage = (sa_comp_t *)&mode_blk[1]; 2974 } 2975 2976 /* 2977 * If we were setting the blocksize, and that failed, we 2978 * want to set it to its original value. If we weren't 2979 * setting the blocksize, we don't want to change it. 2980 */ 2981 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2982 2983 /* 2984 * Set density if requested, else preserve old density. 2985 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2986 * devices, else density we've latched up in our softc. 2987 */ 2988 if (params_to_set & SA_PARAM_DENSITY) { 2989 mode_blk->density = current_density; 2990 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2991 mode_blk->density = SCSI_SAME_DENSITY; 2992 } else { 2993 mode_blk->density = softc->media_density; 2994 } 2995 2996 if (params_to_set & SA_PARAM_COMPRESSION) 2997 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2998 2999 /* 3000 * The retry count is the only CCB field that might have been 3001 * changed that we care about, so reset it back to 1. 3002 */ 3003 ccb->ccb_h.retry_count = 1; 3004 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3005 softc->device_stats); 3006 } 3007 3008 xpt_release_ccb(ccb); 3009 3010 if (ccomp != NULL) 3011 free(ccomp, M_SCSISA); 3012 3013 if (params_to_set & SA_PARAM_COMPRESSION) { 3014 if (error) { 3015 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3016 /* 3017 * Even if we get an error setting compression, 3018 * do not say that we don't support it. We could 3019 * have been wrong, or it may be media specific. 3020 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3021 */ 3022 softc->saved_comp_algorithm = softc->comp_algorithm; 3023 softc->comp_algorithm = 0; 3024 } else { 3025 softc->flags |= SA_FLAG_COMP_ENABLED; 3026 softc->comp_algorithm = calg; 3027 } 3028 } 3029 3030 free(mode_buffer, M_SCSISA); 3031 return (error); 3032 } 3033 3034 static void 3035 saprevent(struct cam_periph *periph, int action) 3036 { 3037 struct sa_softc *softc; 3038 union ccb *ccb; 3039 int error, sf; 3040 3041 softc = (struct sa_softc *)periph->softc; 3042 3043 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3044 return; 3045 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3046 return; 3047 3048 /* 3049 * We can be quiet about illegal requests. 3050 */ 3051 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3052 sf = 0; 3053 } else 3054 sf = SF_QUIET_IR; 3055 3056 ccb = cam_periph_getccb(periph, 1); 3057 3058 /* It is safe to retry this operation */ 3059 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3060 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3061 3062 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3063 if (error == 0) { 3064 if (action == PR_ALLOW) 3065 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3066 else 3067 softc->flags |= SA_FLAG_TAPE_LOCKED; 3068 } 3069 3070 xpt_release_ccb(ccb); 3071 } 3072 3073 static int 3074 sarewind(struct cam_periph *periph) 3075 { 3076 union ccb *ccb; 3077 struct sa_softc *softc; 3078 int error; 3079 3080 softc = (struct sa_softc *)periph->softc; 3081 3082 ccb = cam_periph_getccb(periph, 1); 3083 3084 /* It is safe to retry this operation */ 3085 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3086 SSD_FULL_SIZE, REWIND_TIMEOUT); 3087 3088 softc->dsreg = MTIO_DSREG_REW; 3089 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3090 softc->dsreg = MTIO_DSREG_REST; 3091 3092 xpt_release_ccb(ccb); 3093 if (error == 0) 3094 softc->fileno = softc->blkno = (daddr_t) 0; 3095 else 3096 softc->fileno = softc->blkno = (daddr_t) -1; 3097 return (error); 3098 } 3099 3100 static int 3101 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3102 { 3103 union ccb *ccb; 3104 struct sa_softc *softc; 3105 int error; 3106 3107 softc = (struct sa_softc *)periph->softc; 3108 3109 ccb = cam_periph_getccb(periph, 1); 3110 3111 /* This cannot be retried */ 3112 3113 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3114 SSD_FULL_SIZE, SPACE_TIMEOUT); 3115 3116 /* 3117 * Clear residual because we will be using it. 3118 */ 3119 softc->last_ctl_resid = 0; 3120 3121 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3122 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3123 softc->dsreg = MTIO_DSREG_REST; 3124 3125 xpt_release_ccb(ccb); 3126 3127 /* 3128 * If a spacing operation has failed, we need to invalidate 3129 * this mount. 3130 * 3131 * If the spacing operation was setmarks or to end of recorded data, 3132 * we no longer know our relative position. 3133 * 3134 * If the spacing operations was spacing files in reverse, we 3135 * take account of the residual, but still check against less 3136 * than zero- if we've gone negative, we must have hit BOT. 3137 * 3138 * If the spacing operations was spacing records in reverse and 3139 * we have a residual, we've either hit BOT or hit a filemark. 3140 * In the former case, we know our new record number (0). In 3141 * the latter case, we have absolutely no idea what the real 3142 * record number is- we've stopped between the end of the last 3143 * record in the previous file and the filemark that stopped 3144 * our spacing backwards. 3145 */ 3146 if (error) { 3147 softc->fileno = softc->blkno = (daddr_t) -1; 3148 } else if (code == SS_SETMARKS || code == SS_EOD) { 3149 softc->fileno = softc->blkno = (daddr_t) -1; 3150 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3151 softc->fileno += (count - softc->last_ctl_resid); 3152 if (softc->fileno < 0) /* we must of hit BOT */ 3153 softc->fileno = 0; 3154 softc->blkno = 0; 3155 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3156 softc->blkno += (count - softc->last_ctl_resid); 3157 if (count < 0) { 3158 if (softc->last_ctl_resid || softc->blkno < 0) { 3159 if (softc->fileno == 0) { 3160 softc->blkno = 0; 3161 } else { 3162 softc->blkno = (daddr_t) -1; 3163 } 3164 } 3165 } 3166 } 3167 return (error); 3168 } 3169 3170 static int 3171 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3172 { 3173 union ccb *ccb; 3174 struct sa_softc *softc; 3175 int error, nwm = 0; 3176 3177 softc = (struct sa_softc *)periph->softc; 3178 if (softc->open_rdonly) 3179 return (EBADF); 3180 3181 ccb = cam_periph_getccb(periph, 1); 3182 /* 3183 * Clear residual because we will be using it. 3184 */ 3185 softc->last_ctl_resid = 0; 3186 3187 softc->dsreg = MTIO_DSREG_FMK; 3188 /* this *must* not be retried */ 3189 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3190 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3191 softc->dsreg = MTIO_DSREG_REST; 3192 3193 3194 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3195 3196 if (error == 0 && nmarks) { 3197 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3198 nwm = nmarks - softc->last_ctl_resid; 3199 softc->filemarks += nwm; 3200 } 3201 3202 xpt_release_ccb(ccb); 3203 3204 /* 3205 * Update relative positions (if we're doing that). 3206 */ 3207 if (error) { 3208 softc->fileno = softc->blkno = (daddr_t) -1; 3209 } else if (softc->fileno != (daddr_t) -1) { 3210 softc->fileno += nwm; 3211 softc->blkno = 0; 3212 } 3213 return (error); 3214 } 3215 3216 static int 3217 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3218 { 3219 struct scsi_tape_position_data loc; 3220 union ccb *ccb; 3221 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3222 int error; 3223 3224 /* 3225 * We try and flush any buffered writes here if we were writing 3226 * and we're trying to get hardware block position. It eats 3227 * up performance substantially, but I'm wary of drive firmware. 3228 * 3229 * I think that *logical* block position is probably okay- 3230 * but hardware block position might have to wait for data 3231 * to hit media to be valid. Caveat Emptor. 3232 */ 3233 3234 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3235 error = sawritefilemarks(periph, 0, 0); 3236 if (error && error != EACCES) 3237 return (error); 3238 } 3239 3240 ccb = cam_periph_getccb(periph, 1); 3241 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3242 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3243 softc->dsreg = MTIO_DSREG_RBSY; 3244 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3245 softc->dsreg = MTIO_DSREG_REST; 3246 3247 if (error == 0) { 3248 if (loc.flags & SA_RPOS_UNCERTAIN) { 3249 error = EINVAL; /* nothing is certain */ 3250 } else { 3251 *blkptr = scsi_4btoul(loc.firstblk); 3252 } 3253 } 3254 3255 xpt_release_ccb(ccb); 3256 return (error); 3257 } 3258 3259 static int 3260 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3261 { 3262 union ccb *ccb; 3263 struct sa_softc *softc; 3264 int error; 3265 3266 /* 3267 * We used to try and flush any buffered writes here. 3268 * Now we push this onto user applications to either 3269 * flush the pending writes themselves (via a zero count 3270 * WRITE FILEMARKS command) or they can trust their tape 3271 * drive to do this correctly for them. 3272 */ 3273 3274 softc = (struct sa_softc *)periph->softc; 3275 ccb = cam_periph_getccb(periph, 1); 3276 3277 3278 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3279 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3280 3281 3282 softc->dsreg = MTIO_DSREG_POS; 3283 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3284 softc->dsreg = MTIO_DSREG_REST; 3285 xpt_release_ccb(ccb); 3286 /* 3287 * Note relative file && block number position as now unknown. 3288 */ 3289 softc->fileno = softc->blkno = (daddr_t) -1; 3290 return (error); 3291 } 3292 3293 static int 3294 saretension(struct cam_periph *periph) 3295 { 3296 union ccb *ccb; 3297 struct sa_softc *softc; 3298 int error; 3299 3300 softc = (struct sa_softc *)periph->softc; 3301 3302 ccb = cam_periph_getccb(periph, 1); 3303 3304 /* It is safe to retry this operation */ 3305 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3306 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3307 3308 softc->dsreg = MTIO_DSREG_TEN; 3309 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3310 softc->dsreg = MTIO_DSREG_REST; 3311 3312 xpt_release_ccb(ccb); 3313 if (error == 0) 3314 softc->fileno = softc->blkno = (daddr_t) 0; 3315 else 3316 softc->fileno = softc->blkno = (daddr_t) -1; 3317 return (error); 3318 } 3319 3320 static int 3321 sareservereleaseunit(struct cam_periph *periph, int reserve) 3322 { 3323 union ccb *ccb; 3324 struct sa_softc *softc; 3325 int error; 3326 3327 softc = (struct sa_softc *)periph->softc; 3328 ccb = cam_periph_getccb(periph, 1); 3329 3330 /* It is safe to retry this operation */ 3331 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3332 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3333 softc->dsreg = MTIO_DSREG_RBSY; 3334 error = cam_periph_runccb(ccb, saerror, 0, 3335 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3336 softc->dsreg = MTIO_DSREG_REST; 3337 xpt_release_ccb(ccb); 3338 3339 /* 3340 * If the error was Illegal Request, then the device doesn't support 3341 * RESERVE/RELEASE. This is not an error. 3342 */ 3343 if (error == EINVAL) { 3344 error = 0; 3345 } 3346 3347 return (error); 3348 } 3349 3350 static int 3351 saloadunload(struct cam_periph *periph, int load) 3352 { 3353 union ccb *ccb; 3354 struct sa_softc *softc; 3355 int error; 3356 3357 softc = (struct sa_softc *)periph->softc; 3358 3359 ccb = cam_periph_getccb(periph, 1); 3360 3361 /* It is safe to retry this operation */ 3362 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3363 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3364 3365 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3366 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3367 softc->dsreg = MTIO_DSREG_REST; 3368 xpt_release_ccb(ccb); 3369 3370 if (error || load == 0) 3371 softc->fileno = softc->blkno = (daddr_t) -1; 3372 else if (error == 0) 3373 softc->fileno = softc->blkno = (daddr_t) 0; 3374 return (error); 3375 } 3376 3377 static int 3378 saerase(struct cam_periph *periph, int longerase) 3379 { 3380 3381 union ccb *ccb; 3382 struct sa_softc *softc; 3383 int error; 3384 3385 softc = (struct sa_softc *)periph->softc; 3386 if (softc->open_rdonly) 3387 return (EBADF); 3388 3389 ccb = cam_periph_getccb(periph, 1); 3390 3391 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3392 SSD_FULL_SIZE, ERASE_TIMEOUT); 3393 3394 softc->dsreg = MTIO_DSREG_ZER; 3395 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3396 softc->dsreg = MTIO_DSREG_REST; 3397 3398 xpt_release_ccb(ccb); 3399 return (error); 3400 } 3401 3402 #endif /* _KERNEL */ 3403 3404 /* 3405 * Read tape block limits command. 3406 */ 3407 void 3408 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3409 void (*cbfcnp)(struct cam_periph *, union ccb *), 3410 u_int8_t tag_action, 3411 struct scsi_read_block_limits_data *rlimit_buf, 3412 u_int8_t sense_len, u_int32_t timeout) 3413 { 3414 struct scsi_read_block_limits *scsi_cmd; 3415 3416 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3417 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3418 sizeof(*scsi_cmd), timeout); 3419 3420 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3421 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3422 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3423 } 3424 3425 void 3426 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3427 void (*cbfcnp)(struct cam_periph *, union ccb *), 3428 u_int8_t tag_action, int readop, int sli, 3429 int fixed, u_int32_t length, u_int8_t *data_ptr, 3430 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3431 { 3432 struct scsi_sa_rw *scsi_cmd; 3433 3434 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3435 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3436 scsi_cmd->sli_fixed = 0; 3437 if (sli && readop) 3438 scsi_cmd->sli_fixed |= SAR_SLI; 3439 if (fixed) 3440 scsi_cmd->sli_fixed |= SARW_FIXED; 3441 scsi_ulto3b(length, scsi_cmd->length); 3442 scsi_cmd->control = 0; 3443 3444 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3445 tag_action, data_ptr, dxfer_len, sense_len, 3446 sizeof(*scsi_cmd), timeout); 3447 } 3448 3449 void 3450 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3451 void (*cbfcnp)(struct cam_periph *, union ccb *), 3452 u_int8_t tag_action, int immediate, int eot, 3453 int reten, int load, u_int8_t sense_len, 3454 u_int32_t timeout) 3455 { 3456 struct scsi_load_unload *scsi_cmd; 3457 3458 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3459 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3460 scsi_cmd->opcode = LOAD_UNLOAD; 3461 if (immediate) 3462 scsi_cmd->immediate = SLU_IMMED; 3463 if (eot) 3464 scsi_cmd->eot_reten_load |= SLU_EOT; 3465 if (reten) 3466 scsi_cmd->eot_reten_load |= SLU_RETEN; 3467 if (load) 3468 scsi_cmd->eot_reten_load |= SLU_LOAD; 3469 3470 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3471 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3472 } 3473 3474 void 3475 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3476 void (*cbfcnp)(struct cam_periph *, union ccb *), 3477 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3478 u_int32_t timeout) 3479 { 3480 struct scsi_rewind *scsi_cmd; 3481 3482 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3483 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3484 scsi_cmd->opcode = REWIND; 3485 if (immediate) 3486 scsi_cmd->immediate = SREW_IMMED; 3487 3488 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3489 0, sense_len, sizeof(*scsi_cmd), timeout); 3490 } 3491 3492 void 3493 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3494 void (*cbfcnp)(struct cam_periph *, union ccb *), 3495 u_int8_t tag_action, scsi_space_code code, 3496 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3497 { 3498 struct scsi_space *scsi_cmd; 3499 3500 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3501 scsi_cmd->opcode = SPACE; 3502 scsi_cmd->code = code; 3503 scsi_ulto3b(count, scsi_cmd->count); 3504 scsi_cmd->control = 0; 3505 3506 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3507 0, sense_len, sizeof(*scsi_cmd), timeout); 3508 } 3509 3510 void 3511 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3512 void (*cbfcnp)(struct cam_periph *, union ccb *), 3513 u_int8_t tag_action, int immediate, int setmark, 3514 u_int32_t num_marks, u_int8_t sense_len, 3515 u_int32_t timeout) 3516 { 3517 struct scsi_write_filemarks *scsi_cmd; 3518 3519 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3520 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3521 scsi_cmd->opcode = WRITE_FILEMARKS; 3522 if (immediate) 3523 scsi_cmd->byte2 |= SWFMRK_IMMED; 3524 if (setmark) 3525 scsi_cmd->byte2 |= SWFMRK_WSMK; 3526 3527 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3528 3529 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3530 0, sense_len, sizeof(*scsi_cmd), timeout); 3531 } 3532 3533 /* 3534 * The reserve and release unit commands differ only by their opcodes. 3535 */ 3536 void 3537 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3538 void (*cbfcnp)(struct cam_periph *, union ccb *), 3539 u_int8_t tag_action, int third_party, 3540 int third_party_id, u_int8_t sense_len, 3541 u_int32_t timeout, int reserve) 3542 { 3543 struct scsi_reserve_release_unit *scsi_cmd; 3544 3545 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3546 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3547 3548 if (reserve) 3549 scsi_cmd->opcode = RESERVE_UNIT; 3550 else 3551 scsi_cmd->opcode = RELEASE_UNIT; 3552 3553 if (third_party) { 3554 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3555 scsi_cmd->lun_thirdparty |= 3556 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3557 } 3558 3559 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3560 0, sense_len, sizeof(*scsi_cmd), timeout); 3561 } 3562 3563 void 3564 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3565 void (*cbfcnp)(struct cam_periph *, union ccb *), 3566 u_int8_t tag_action, int immediate, int long_erase, 3567 u_int8_t sense_len, u_int32_t timeout) 3568 { 3569 struct scsi_erase *scsi_cmd; 3570 3571 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3572 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3573 3574 scsi_cmd->opcode = ERASE; 3575 3576 if (immediate) 3577 scsi_cmd->lun_imm_long |= SE_IMMED; 3578 3579 if (long_erase) 3580 scsi_cmd->lun_imm_long |= SE_LONG; 3581 3582 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3583 0, sense_len, sizeof(*scsi_cmd), timeout); 3584 } 3585 3586 /* 3587 * Read Tape Position command. 3588 */ 3589 void 3590 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3591 void (*cbfcnp)(struct cam_periph *, union ccb *), 3592 u_int8_t tag_action, int hardsoft, 3593 struct scsi_tape_position_data *sbp, 3594 u_int8_t sense_len, u_int32_t timeout) 3595 { 3596 struct scsi_tape_read_position *scmd; 3597 3598 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3599 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3600 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3601 bzero(scmd, sizeof(*scmd)); 3602 scmd->opcode = READ_POSITION; 3603 scmd->byte1 = hardsoft; 3604 } 3605 3606 /* 3607 * Set Tape Position command. 3608 */ 3609 void 3610 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3611 void (*cbfcnp)(struct cam_periph *, union ccb *), 3612 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3613 u_int8_t sense_len, u_int32_t timeout) 3614 { 3615 struct scsi_tape_locate *scmd; 3616 3617 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3618 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3619 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3620 bzero(scmd, sizeof(*scmd)); 3621 scmd->opcode = LOCATE; 3622 if (hardsoft) 3623 scmd->byte1 |= SA_SPOS_BT; 3624 scsi_ulto4b(blkno, scmd->blkaddr); 3625 } 3626