1 /* 2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $ 3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.36 2008/07/18 00:07:23 dillon Exp $ 4 * 5 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 6 * 7 * Copyright (c) 1999, 2000 Matthew Jacob 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33 #include <sys/param.h> 34 #include <sys/queue.h> 35 #ifdef _KERNEL 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #endif 39 #include <sys/types.h> 40 #ifdef _KERNEL 41 #include <sys/buf.h> 42 #include <sys/malloc.h> 43 #endif 44 #include <sys/mtio.h> 45 #include <sys/conf.h> 46 #ifdef _KERNEL 47 #include <sys/proc.h> 48 #include <sys/buf2.h> 49 #include <sys/thread2.h> 50 #endif 51 #include <sys/fcntl.h> 52 #include <sys/devicestat.h> 53 #include <machine/limits.h> 54 55 #ifndef _KERNEL 56 #include <stdio.h> 57 #include <string.h> 58 #endif 59 60 #include "../cam.h" 61 #include "../cam_ccb.h" 62 #include "../cam_extend.h" 63 #include "../cam_periph.h" 64 #include "../cam_xpt_periph.h" 65 #include "../cam_debug.h" 66 67 #include "scsi_all.h" 68 #include "scsi_message.h" 69 #include "scsi_sa.h" 70 71 #ifdef _KERNEL 72 73 #include <opt_sa.h> 74 75 #ifndef SA_IO_TIMEOUT 76 #define SA_IO_TIMEOUT 4 77 #endif 78 #ifndef SA_SPACE_TIMEOUT 79 #define SA_SPACE_TIMEOUT 1 * 60 80 #endif 81 #ifndef SA_REWIND_TIMEOUT 82 #define SA_REWIND_TIMEOUT 2 * 60 83 #endif 84 #ifndef SA_ERASE_TIMEOUT 85 #define SA_ERASE_TIMEOUT 4 * 60 86 #endif 87 88 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 89 90 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 91 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 92 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 93 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 94 95 /* 96 * Additional options that can be set for config: SA_1FM_AT_EOT 97 */ 98 99 #ifndef UNUSED_PARAMETER 100 #define UNUSED_PARAMETER(x) x = x 101 #endif 102 103 #define QFRLS(ccb) \ 104 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 105 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 106 107 /* 108 * Driver states 109 */ 110 111 MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 112 113 typedef enum { 114 SA_STATE_NORMAL, SA_STATE_ABNORMAL 115 } sa_state; 116 117 #define ccb_pflags ppriv_field0 118 #define ccb_bio ppriv_ptr1 119 120 #define SA_CCB_BUFFER_IO 0x0 121 #define SA_CCB_WAITING 0x1 122 #define SA_CCB_TYPEMASK 0x1 123 #define SA_POSITION_UPDATED 0x2 124 125 #define Set_CCB_Type(x, type) \ 126 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 127 x->ccb_h.ccb_pflags |= type 128 129 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 130 131 132 133 typedef enum { 134 SA_FLAG_OPEN = 0x0001, 135 SA_FLAG_FIXED = 0x0002, 136 SA_FLAG_TAPE_LOCKED = 0x0004, 137 SA_FLAG_TAPE_MOUNTED = 0x0008, 138 SA_FLAG_TAPE_WP = 0x0010, 139 SA_FLAG_TAPE_WRITTEN = 0x0020, 140 SA_FLAG_EOM_PENDING = 0x0040, 141 SA_FLAG_EIO_PENDING = 0x0080, 142 SA_FLAG_EOF_PENDING = 0x0100, 143 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 144 SA_FLAG_EOF_PENDING), 145 SA_FLAG_INVALID = 0x0200, 146 SA_FLAG_COMP_ENABLED = 0x0400, 147 SA_FLAG_COMP_SUPP = 0x0800, 148 SA_FLAG_COMP_UNSUPP = 0x1000, 149 SA_FLAG_TAPE_FROZEN = 0x2000 150 } sa_flags; 151 152 typedef enum { 153 SA_MODE_REWIND = 0x00, 154 SA_MODE_NOREWIND = 0x01, 155 SA_MODE_OFFLINE = 0x02 156 } sa_mode; 157 158 typedef enum { 159 SA_PARAM_NONE = 0x00, 160 SA_PARAM_BLOCKSIZE = 0x01, 161 SA_PARAM_DENSITY = 0x02, 162 SA_PARAM_COMPRESSION = 0x04, 163 SA_PARAM_BUFF_MODE = 0x08, 164 SA_PARAM_NUMBLOCKS = 0x10, 165 SA_PARAM_WP = 0x20, 166 SA_PARAM_SPEED = 0x40, 167 SA_PARAM_ALL = 0x7f 168 } sa_params; 169 170 typedef enum { 171 SA_QUIRK_NONE = 0x00, 172 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 173 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 174 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 175 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 176 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 177 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 178 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 179 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 180 } sa_quirks; 181 182 /* units are bits 4-7, 16-21 (1024 units) */ 183 #define SAUNIT(DEV) \ 184 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 185 186 #define SAMODE(z) ((minor(z) & 0x3)) 187 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 188 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 189 190 #define SA_NOT_CTLDEV 0 191 #define SA_CTLDEV 1 192 193 #define SA_ATYPE_R 0 194 #define SA_ATYPE_NR 1 195 #define SA_ATYPE_ER 2 196 197 #define SAMINOR(ctl, unit, mode, access) \ 198 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 199 (mode << 0x2) | (access & 0x3)) 200 201 #define SA_UNITMASK SAMINOR(0, -1, 0, 0) 202 #define SA_UNIT(unit) SAMINOR(0, unit, 0, 0) 203 204 #define SA_NUM_MODES 4 205 206 struct sa_softc { 207 sa_state state; 208 sa_flags flags; 209 sa_quirks quirks; 210 struct bio_queue_head bio_queue; 211 int queue_count; 212 struct devstat device_stats; 213 int blk_gran; 214 int blk_mask; 215 int blk_shift; 216 u_int32_t max_blk; 217 u_int32_t min_blk; 218 u_int32_t comp_algorithm; 219 u_int32_t saved_comp_algorithm; 220 u_int32_t media_blksize; 221 u_int32_t last_media_blksize; 222 u_int32_t media_numblks; 223 u_int8_t media_density; 224 u_int8_t speed; 225 u_int8_t scsi_rev; 226 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 227 int buffer_mode; 228 int filemarks; 229 union ccb saved_ccb; 230 int last_resid_was_io; 231 232 /* 233 * Relative to BOT Location. 234 */ 235 daddr_t fileno; 236 daddr_t blkno; 237 238 /* 239 * Latched Error Info 240 */ 241 struct { 242 struct scsi_sense_data _last_io_sense; 243 u_int32_t _last_io_resid; 244 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 245 struct scsi_sense_data _last_ctl_sense; 246 u_int32_t _last_ctl_resid; 247 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 248 #define last_io_sense errinfo._last_io_sense 249 #define last_io_resid errinfo._last_io_resid 250 #define last_io_cdb errinfo._last_io_cdb 251 #define last_ctl_sense errinfo._last_ctl_sense 252 #define last_ctl_resid errinfo._last_ctl_resid 253 #define last_ctl_cdb errinfo._last_ctl_cdb 254 } errinfo; 255 /* 256 * Misc other flags/state 257 */ 258 u_int32_t 259 : 29, 260 open_rdonly : 1, /* open read-only */ 261 open_pending_mount : 1, /* open pending mount */ 262 ctrl_mode : 1; /* control device open */ 263 }; 264 265 struct sa_quirk_entry { 266 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 267 sa_quirks quirks; /* specific quirk type */ 268 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 269 }; 270 271 static struct sa_quirk_entry sa_quirk_table[] = 272 { 273 { 274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 275 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 276 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 277 }, 278 { 279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 280 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 284 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "Python*", "*"}, SA_QUIRK_NODREAD, 0 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "VIPER 2525 25462", "-011"}, 297 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 298 }, 299 { 300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 301 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 302 }, 303 #if 0 304 { 305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 306 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 307 }, 308 #endif 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 311 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 312 }, 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 315 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 319 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 323 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 324 }, 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 327 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 331 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 332 }, 333 { /* jreynold@primenet.com */ 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 335 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 336 }, 337 { /* mike@sentex.net */ 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 339 "STT20000*", "*"}, SA_QUIRK_1FM, 0 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 343 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 347 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 351 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 355 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 359 " SLR*", "*"}, SA_QUIRK_1FM, 0 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 363 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 364 }, 365 { 366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 367 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 368 } 369 }; 370 371 static d_open_t saopen; 372 static d_close_t saclose; 373 static d_strategy_t sastrategy; 374 static d_ioctl_t saioctl; 375 static periph_init_t sainit; 376 static periph_ctor_t saregister; 377 static periph_oninv_t saoninvalidate; 378 static periph_dtor_t sacleanup; 379 static periph_start_t sastart; 380 static void saasync(void *callback_arg, u_int32_t code, 381 struct cam_path *path, void *arg); 382 static void sadone(struct cam_periph *periph, 383 union ccb *start_ccb); 384 static int saerror(union ccb *ccb, u_int32_t cam_flags, 385 u_int32_t sense_flags); 386 static int samarkswanted(struct cam_periph *); 387 static int sacheckeod(struct cam_periph *periph); 388 static int sagetparams(struct cam_periph *periph, 389 sa_params params_to_get, 390 u_int32_t *blocksize, u_int8_t *density, 391 u_int32_t *numblocks, int *buff_mode, 392 u_int8_t *write_protect, u_int8_t *speed, 393 int *comp_supported, int *comp_enabled, 394 u_int32_t *comp_algorithm, 395 sa_comp_t *comp_page); 396 static int sasetparams(struct cam_periph *periph, 397 sa_params params_to_set, 398 u_int32_t blocksize, u_int8_t density, 399 u_int32_t comp_algorithm, 400 u_int32_t sense_flags); 401 static void saprevent(struct cam_periph *periph, int action); 402 static int sarewind(struct cam_periph *periph); 403 static int saspace(struct cam_periph *periph, int count, 404 scsi_space_code code); 405 static int samount(struct cam_periph *, int, cdev_t); 406 static int saretension(struct cam_periph *periph); 407 static int sareservereleaseunit(struct cam_periph *periph, 408 int reserve); 409 static int saloadunload(struct cam_periph *periph, int load); 410 static int saerase(struct cam_periph *periph, int longerase); 411 static int sawritefilemarks(struct cam_periph *periph, 412 int nmarks, int setmarks); 413 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 414 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 415 416 417 static struct periph_driver sadriver = 418 { 419 sainit, "sa", 420 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 421 }; 422 423 PERIPHDRIVER_DECLARE(sa, sadriver); 424 425 /* For 2.2-stable support */ 426 #ifndef D_TAPE 427 #define D_TAPE 0 428 #endif 429 430 #define SA_CDEV_MAJOR 14 431 432 static struct dev_ops sa_ops = { 433 { "sa", SA_CDEV_MAJOR, D_TAPE }, 434 .d_open = saopen, 435 .d_close = saclose, 436 .d_read = physread, 437 .d_write = physwrite, 438 .d_ioctl = saioctl, 439 .d_strategy = sastrategy, 440 }; 441 442 static struct extend_array *saperiphs; 443 444 static int 445 saopen(struct dev_open_args *ap) 446 { 447 cdev_t dev = ap->a_head.a_dev; 448 struct cam_periph *periph; 449 struct sa_softc *softc; 450 int unit; 451 int error; 452 453 unit = SAUNIT(dev); 454 455 periph = cam_extend_get(saperiphs, unit); 456 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 457 return (ENXIO); 458 } 459 460 cam_periph_lock(periph); 461 462 softc = (struct sa_softc *)periph->softc; 463 464 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 465 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 466 467 if (SA_IS_CTRL(dev)) { 468 softc->ctrl_mode = 1; 469 cam_periph_unlock(periph); 470 return (0); 471 } 472 473 if ((error = cam_periph_hold(periph, PCATCH)) != 0) { 474 cam_periph_unlock(periph); 475 cam_periph_release(periph); 476 return (error); 477 } 478 479 if (softc->flags & SA_FLAG_OPEN) { 480 error = EBUSY; 481 } else if (softc->flags & SA_FLAG_INVALID) { 482 error = ENXIO; 483 } else { 484 /* 485 * Preserve whether this is a read_only open. 486 */ 487 softc->open_rdonly = (ap->a_oflags & O_RDWR) == O_RDONLY; 488 489 /* 490 * The function samount ensures media is loaded and ready. 491 * It also does a device RESERVE if the tape isn't yet mounted. 492 * 493 * If the mount fails and this was a non-blocking open, 494 * make this a 'open_pending_mount' action. 495 */ 496 error = samount(periph, ap->a_oflags, dev); 497 if (error && (ap->a_oflags & O_NONBLOCK)) { 498 softc->flags |= SA_FLAG_OPEN; 499 softc->open_pending_mount = 1; 500 cam_periph_unhold(periph, 1); 501 return (0); 502 } 503 } 504 505 if (error) { 506 cam_periph_unhold(periph, 1); 507 cam_periph_release(periph); 508 return (error); 509 } 510 511 saprevent(periph, PR_PREVENT); 512 softc->flags |= SA_FLAG_OPEN; 513 514 cam_periph_unhold(periph, 1); 515 return (error); 516 } 517 518 static int 519 saclose(struct dev_close_args *ap) 520 { 521 cdev_t dev = ap->a_head.a_dev; 522 struct cam_periph *periph; 523 struct sa_softc *softc; 524 int unit, mode, error, writing, tmp; 525 int closedbits = SA_FLAG_OPEN; 526 527 unit = SAUNIT(dev); 528 mode = SAMODE(dev); 529 periph = cam_extend_get(saperiphs, unit); 530 if (periph == NULL) 531 return (ENXIO); 532 533 cam_periph_lock(periph); 534 535 softc = (struct sa_softc *)periph->softc; 536 537 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 538 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 539 540 541 softc->open_rdonly = 0; 542 if (SA_IS_CTRL(dev)) { 543 softc->ctrl_mode = 0; 544 cam_periph_unlock(periph); 545 cam_periph_release(periph); 546 return (0); 547 } 548 549 if (softc->open_pending_mount) { 550 softc->flags &= ~SA_FLAG_OPEN; 551 softc->open_pending_mount = 0; 552 cam_periph_unlock(periph); 553 cam_periph_release(periph); 554 return (0); 555 } 556 557 if ((error = cam_periph_hold(periph, 0)) != 0) { 558 cam_periph_unlock(periph); 559 return (error); 560 } 561 562 /* 563 * Were we writing the tape? 564 */ 565 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 566 567 /* 568 * See whether or not we need to write filemarks. If this 569 * fails, we probably have to assume we've lost tape 570 * position. 571 */ 572 error = sacheckeod(periph); 573 if (error) { 574 xpt_print(periph->path, 575 "failed to write terminating filemark(s)\n"); 576 softc->flags |= SA_FLAG_TAPE_FROZEN; 577 } 578 579 /* 580 * Whatever we end up doing, allow users to eject tapes from here on. 581 */ 582 saprevent(periph, PR_ALLOW); 583 584 /* 585 * Decide how to end... 586 */ 587 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 588 closedbits |= SA_FLAG_TAPE_FROZEN; 589 } else switch (mode) { 590 case SA_MODE_OFFLINE: 591 /* 592 * An 'offline' close is an unconditional release of 593 * frozen && mount conditions, irrespective of whether 594 * these operations succeeded. The reason for this is 595 * to allow at least some kind of programmatic way 596 * around our state getting all fouled up. If somebody 597 * issues an 'offline' command, that will be allowed 598 * to clear state. 599 */ 600 sarewind(periph); 601 saloadunload(periph, FALSE); 602 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 603 break; 604 case SA_MODE_REWIND: 605 /* 606 * If the rewind fails, return an error- if anyone cares, 607 * but not overwriting any previous error. 608 * 609 * We don't clear the notion of mounted here, but we do 610 * clear the notion of frozen if we successfully rewound. 611 */ 612 tmp = sarewind(periph); 613 if (tmp) { 614 if (error != 0) 615 error = tmp; 616 } else { 617 closedbits |= SA_FLAG_TAPE_FROZEN; 618 } 619 break; 620 case SA_MODE_NOREWIND: 621 /* 622 * If we're not rewinding/unloading the tape, find out 623 * whether we need to back up over one of two filemarks 624 * we wrote (if we wrote two filemarks) so that appends 625 * from this point on will be sane. 626 */ 627 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 628 tmp = saspace(periph, -1, SS_FILEMARKS); 629 if (tmp) { 630 xpt_print(periph->path, "unable to backspace " 631 "over one of double filemarks at end of " 632 "tape\n"); 633 xpt_print(periph->path, "it is possible that " 634 "this device needs a SA_QUIRK_1FM quirk set" 635 "for it\n"); 636 softc->flags |= SA_FLAG_TAPE_FROZEN; 637 } 638 } 639 break; 640 default: 641 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 642 /* NOTREACHED */ 643 break; 644 } 645 646 /* 647 * We wish to note here that there are no more filemarks to be written. 648 */ 649 softc->filemarks = 0; 650 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 651 652 /* 653 * And we are no longer open for business. 654 */ 655 softc->flags &= ~closedbits; 656 657 /* 658 * Inform users if tape state if frozen.... 659 */ 660 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 661 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 662 "REWIND or MTEOM command to clear this state.\n"); 663 } 664 665 /* release the device if it is no longer mounted */ 666 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 667 sareservereleaseunit(periph, FALSE); 668 669 cam_periph_unhold(periph, 1); 670 cam_periph_release(periph); 671 672 return (error); 673 } 674 675 /* 676 * Actually translate the requested transfer into one the physical driver 677 * can understand. The transfer is described by a buf and will include 678 * only one physical transfer. 679 */ 680 static int 681 sastrategy(struct dev_strategy_args *ap) 682 { 683 cdev_t dev = ap->a_head.a_dev; 684 struct bio *bio = ap->a_bio; 685 struct buf *bp = bio->bio_buf; 686 struct cam_periph *periph; 687 struct sa_softc *softc; 688 u_int unit; 689 690 if (SA_IS_CTRL(dev)) { 691 bp->b_error = EINVAL; 692 goto bad; 693 } 694 unit = SAUNIT(dev); 695 periph = cam_extend_get(saperiphs, unit); 696 if (periph == NULL) { 697 bp->b_error = ENXIO; 698 goto bad; 699 } 700 cam_periph_lock(periph); 701 702 softc = (struct sa_softc *)periph->softc; 703 704 if (softc->flags & SA_FLAG_INVALID) { 705 cam_periph_unlock(periph); 706 bp->b_error = ENXIO; 707 goto bad; 708 } 709 710 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 711 cam_periph_unlock(periph); 712 bp->b_error = EPERM; 713 goto bad; 714 } 715 716 /* 717 * This should actually never occur as the write(2) 718 * system call traps attempts to write to a read-only 719 * file descriptor. 720 */ 721 if (bp->b_cmd == BUF_CMD_WRITE && softc->open_rdonly) { 722 cam_periph_unlock(periph); 723 bp->b_error = EBADF; 724 goto bad; 725 } 726 727 if (softc->open_pending_mount) { 728 int error = samount(periph, 0, dev); 729 if (error) { 730 cam_periph_unlock(periph); 731 bp->b_error = ENXIO; 732 goto bad; 733 } 734 saprevent(periph, PR_PREVENT); 735 softc->open_pending_mount = 0; 736 } 737 738 /* 739 * If it's a null transfer, return immediately 740 */ 741 if (bp->b_bcount == 0) { 742 cam_periph_unlock(periph); 743 goto done; 744 } 745 746 /* valid request? */ 747 if (softc->flags & SA_FLAG_FIXED) { 748 /* 749 * Fixed block device. The byte count must 750 * be a multiple of our block size. 751 */ 752 if (((softc->blk_mask != ~0) && 753 ((bp->b_bcount & softc->blk_mask) != 0)) || 754 ((softc->blk_mask == ~0) && 755 ((bp->b_bcount % softc->min_blk) != 0))) { 756 xpt_print(periph->path, "Invalid request. Fixed block " 757 "device requests must be a multiple of %d bytes\n", 758 softc->min_blk); 759 cam_periph_unlock(periph); 760 bp->b_error = EINVAL; 761 goto bad; 762 } 763 } else if ((bp->b_bcount > softc->max_blk) || 764 (bp->b_bcount < softc->min_blk) || 765 (bp->b_bcount & softc->blk_mask) != 0) { 766 767 xpt_print_path(periph->path); 768 kprintf("Invalid request. Variable block " 769 "device requests must be "); 770 if (softc->blk_mask != 0) { 771 kprintf("a multiple of %d ", (0x1 << softc->blk_gran)); 772 } 773 kprintf("between %d and %d bytes\n", softc->min_blk, 774 softc->max_blk); 775 cam_periph_unlock(periph); 776 bp->b_error = EINVAL; 777 goto bad; 778 } 779 780 /* 781 * Place it at the end of the queue. 782 */ 783 bioq_insert_tail(&softc->bio_queue, bio); 784 softc->queue_count++; 785 #if 0 786 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 787 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 788 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 789 (bp->bio_cmd == BIO_READ)? "read" : "write")); 790 #endif 791 if (softc->queue_count > 1) { 792 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 793 ("sastrategy: queue count now %d\n", softc->queue_count)); 794 } 795 796 /* 797 * Schedule ourselves for performing the work. 798 */ 799 xpt_schedule(periph, 1); 800 cam_periph_unlock(periph); 801 802 return(0); 803 bad: 804 bp->b_flags |= B_ERROR; 805 done: 806 807 /* 808 * Correctly set the buf to indicate a completed xfer 809 */ 810 bp->b_resid = bp->b_bcount; 811 biodone(bio); 812 return(0); 813 } 814 815 816 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 817 if (softc->open_pending_mount) { \ 818 error = samount(periph, 0, dev); \ 819 if (error) { \ 820 break; \ 821 } \ 822 saprevent(periph, PR_PREVENT); \ 823 softc->open_pending_mount = 0; \ 824 } 825 826 static int 827 saioctl(struct dev_ioctl_args *ap) 828 { 829 cdev_t dev = ap->a_head.a_dev; 830 caddr_t addr = ap->a_data; 831 struct cam_periph *periph; 832 struct sa_softc *softc; 833 scsi_space_code spaceop; 834 int didholdperiph = 0; 835 int unit; 836 int mode; 837 int error = 0; 838 839 unit = SAUNIT(dev); 840 mode = SAMODE(dev); 841 error = 0; /* shut up gcc */ 842 spaceop = 0; /* shut up gcc */ 843 844 periph = cam_extend_get(saperiphs, unit); 845 if (periph == NULL) 846 return (ENXIO); 847 848 cam_periph_lock(periph); 849 softc = (struct sa_softc *)periph->softc; 850 851 /* 852 * Check for control mode accesses. We allow MTIOCGET and 853 * MTIOCERRSTAT (but need to be the only one open in order 854 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 855 * and MTCOMP (but need to be the only one accessing this 856 * device to run those). 857 */ 858 859 if (SA_IS_CTRL(dev)) { 860 switch (ap->a_cmd) { 861 case MTIOCGETEOTMODEL: 862 case MTIOCGET: 863 break; 864 case MTIOCERRSTAT: 865 /* 866 * If the periph isn't already locked, lock it 867 * so our MTIOCERRSTAT can reset latched error stats. 868 * 869 * If the periph is already locked, skip it because 870 * we're just getting status and it'll be up to the 871 * other thread that has this device open to do 872 * an MTIOCERRSTAT that would clear latched status. 873 */ 874 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 875 error = cam_periph_hold(periph, PCATCH); 876 if (error != 0) { 877 return (error); 878 } 879 didholdperiph = 1; 880 } 881 break; 882 883 case MTIOCTOP: 884 { 885 struct mtop *mt = (struct mtop *) addr; 886 887 /* 888 * Check to make sure it's an OP we can perform 889 * with no media inserted. 890 */ 891 switch (mt->mt_op) { 892 case MTSETBSIZ: 893 case MTSETDNSTY: 894 case MTCOMP: 895 mt = NULL; 896 /* FALLTHROUGH */ 897 default: 898 break; 899 } 900 if (mt != NULL) { 901 break; 902 } 903 /* FALLTHROUGH */ 904 } 905 case MTIOCSETEOTMODEL: 906 /* 907 * We need to acquire the peripheral here rather 908 * than at open time because we are sharing writable 909 * access to data structures. 910 */ 911 error = cam_periph_hold(periph, PCATCH); 912 if (error != 0) { 913 return (error); 914 } 915 didholdperiph = 1; 916 break; 917 918 default: 919 return (EINVAL); 920 } 921 } 922 923 /* 924 * Find the device that the user is talking about 925 */ 926 switch (ap->a_cmd) { 927 case MTIOCGET: 928 { 929 struct mtget *g = (struct mtget *)addr; 930 931 /* 932 * If this isn't the control mode device, actually go out 933 * and ask the drive again what it's set to. 934 */ 935 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 936 u_int8_t write_protect; 937 int comp_enabled, comp_supported; 938 error = sagetparams(periph, SA_PARAM_ALL, 939 &softc->media_blksize, &softc->media_density, 940 &softc->media_numblks, &softc->buffer_mode, 941 &write_protect, &softc->speed, &comp_supported, 942 &comp_enabled, &softc->comp_algorithm, NULL); 943 if (error) 944 break; 945 if (write_protect) 946 softc->flags |= SA_FLAG_TAPE_WP; 947 else 948 softc->flags &= ~SA_FLAG_TAPE_WP; 949 softc->flags &= ~(SA_FLAG_COMP_SUPP| 950 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 951 if (comp_supported) { 952 if (softc->saved_comp_algorithm == 0) 953 softc->saved_comp_algorithm = 954 softc->comp_algorithm; 955 softc->flags |= SA_FLAG_COMP_SUPP; 956 if (comp_enabled) 957 softc->flags |= SA_FLAG_COMP_ENABLED; 958 } else 959 softc->flags |= SA_FLAG_COMP_UNSUPP; 960 } 961 bzero(g, sizeof(struct mtget)); 962 g->mt_type = MT_ISAR; 963 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 964 g->mt_comp = MT_COMP_UNSUPP; 965 g->mt_comp0 = MT_COMP_UNSUPP; 966 g->mt_comp1 = MT_COMP_UNSUPP; 967 g->mt_comp2 = MT_COMP_UNSUPP; 968 g->mt_comp3 = MT_COMP_UNSUPP; 969 } else { 970 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 971 g->mt_comp = MT_COMP_DISABLED; 972 } else { 973 g->mt_comp = softc->comp_algorithm; 974 } 975 g->mt_comp0 = softc->comp_algorithm; 976 g->mt_comp1 = softc->comp_algorithm; 977 g->mt_comp2 = softc->comp_algorithm; 978 g->mt_comp3 = softc->comp_algorithm; 979 } 980 g->mt_density = softc->media_density; 981 g->mt_density0 = softc->media_density; 982 g->mt_density1 = softc->media_density; 983 g->mt_density2 = softc->media_density; 984 g->mt_density3 = softc->media_density; 985 g->mt_blksiz = softc->media_blksize; 986 g->mt_blksiz0 = softc->media_blksize; 987 g->mt_blksiz1 = softc->media_blksize; 988 g->mt_blksiz2 = softc->media_blksize; 989 g->mt_blksiz3 = softc->media_blksize; 990 g->mt_fileno = softc->fileno; 991 g->mt_blkno = softc->blkno; 992 g->mt_dsreg = (short) softc->dsreg; 993 /* 994 * Yes, we know that this is likely to overflow 995 */ 996 if (softc->last_resid_was_io) { 997 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 998 if (SA_IS_CTRL(dev) == 0 || didholdperiph) { 999 softc->last_io_resid = 0; 1000 } 1001 } 1002 } else { 1003 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1004 if (SA_IS_CTRL(dev) == 0 || didholdperiph) { 1005 softc->last_ctl_resid = 0; 1006 } 1007 } 1008 } 1009 error = 0; 1010 break; 1011 } 1012 case MTIOCERRSTAT: 1013 { 1014 struct scsi_tape_errors *sep = 1015 &((union mterrstat *)addr)->scsi_errstat; 1016 1017 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1018 ("saioctl: MTIOCERRSTAT\n")); 1019 1020 bzero(sep, sizeof(*sep)); 1021 sep->io_resid = softc->last_io_resid; 1022 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1023 sizeof (sep->io_sense)); 1024 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1025 sizeof (sep->io_cdb)); 1026 sep->ctl_resid = softc->last_ctl_resid; 1027 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1028 sizeof (sep->ctl_sense)); 1029 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1030 sizeof (sep->ctl_cdb)); 1031 1032 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1033 didholdperiph) 1034 bzero((caddr_t) &softc->errinfo, 1035 sizeof (softc->errinfo)); 1036 error = 0; 1037 break; 1038 } 1039 case MTIOCTOP: 1040 { 1041 struct mtop *mt; 1042 int count; 1043 1044 PENDING_MOUNT_CHECK(softc, periph, dev); 1045 1046 mt = (struct mtop *)addr; 1047 1048 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1049 ("saioctl: op=0x%x count=0x%x\n", 1050 mt->mt_op, mt->mt_count)); 1051 1052 count = mt->mt_count; 1053 switch (mt->mt_op) { 1054 case MTWEOF: /* write an end-of-file marker */ 1055 /* 1056 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1057 * flag because by keeping track of filemarks 1058 * we have last written we know ehether or not 1059 * we need to write more when we close the device. 1060 */ 1061 error = sawritefilemarks(periph, count, FALSE); 1062 break; 1063 case MTWSS: /* write a setmark */ 1064 error = sawritefilemarks(periph, count, TRUE); 1065 break; 1066 case MTBSR: /* backward space record */ 1067 case MTFSR: /* forward space record */ 1068 case MTBSF: /* backward space file */ 1069 case MTFSF: /* forward space file */ 1070 case MTBSS: /* backward space setmark */ 1071 case MTFSS: /* forward space setmark */ 1072 case MTEOD: /* space to end of recorded medium */ 1073 { 1074 int nmarks; 1075 1076 spaceop = SS_FILEMARKS; 1077 nmarks = softc->filemarks; 1078 error = sacheckeod(periph); 1079 if (error) { 1080 xpt_print(periph->path, 1081 "EOD check prior to spacing failed\n"); 1082 softc->flags |= SA_FLAG_EIO_PENDING; 1083 break; 1084 } 1085 nmarks -= softc->filemarks; 1086 switch(mt->mt_op) { 1087 case MTBSR: 1088 count = -count; 1089 /* FALLTHROUGH */ 1090 case MTFSR: 1091 spaceop = SS_BLOCKS; 1092 break; 1093 case MTBSF: 1094 count = -count; 1095 /* FALLTHROUGH */ 1096 case MTFSF: 1097 break; 1098 case MTBSS: 1099 count = -count; 1100 /* FALLTHROUGH */ 1101 case MTFSS: 1102 spaceop = SS_SETMARKS; 1103 break; 1104 case MTEOD: 1105 spaceop = SS_EOD; 1106 count = 0; 1107 nmarks = 0; 1108 break; 1109 default: 1110 error = EINVAL; 1111 break; 1112 } 1113 if (error) 1114 break; 1115 1116 nmarks = softc->filemarks; 1117 /* 1118 * XXX: Why are we checking again? 1119 */ 1120 error = sacheckeod(periph); 1121 if (error) 1122 break; 1123 nmarks -= softc->filemarks; 1124 error = saspace(periph, count - nmarks, spaceop); 1125 /* 1126 * At this point, clear that we've written the tape 1127 * and that we've written any filemarks. We really 1128 * don't know what the applications wishes to do next- 1129 * the sacheckeod's will make sure we terminated the 1130 * tape correctly if we'd been writing, but the next 1131 * action the user application takes will set again 1132 * whether we need to write filemarks. 1133 */ 1134 softc->flags &= 1135 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1136 softc->filemarks = 0; 1137 break; 1138 } 1139 case MTREW: /* rewind */ 1140 PENDING_MOUNT_CHECK(softc, periph, dev); 1141 sacheckeod(periph); 1142 error = sarewind(periph); 1143 /* see above */ 1144 softc->flags &= 1145 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1146 softc->flags &= ~SA_FLAG_ERR_PENDING; 1147 softc->filemarks = 0; 1148 break; 1149 case MTERASE: /* erase */ 1150 PENDING_MOUNT_CHECK(softc, periph, dev); 1151 error = saerase(periph, count); 1152 softc->flags &= 1153 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1154 softc->flags &= ~SA_FLAG_ERR_PENDING; 1155 break; 1156 case MTRETENS: /* re-tension tape */ 1157 PENDING_MOUNT_CHECK(softc, periph, dev); 1158 error = saretension(periph); 1159 softc->flags &= 1160 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1161 softc->flags &= ~SA_FLAG_ERR_PENDING; 1162 break; 1163 case MTOFFL: /* rewind and put the drive offline */ 1164 1165 PENDING_MOUNT_CHECK(softc, periph, dev); 1166 1167 sacheckeod(periph); 1168 /* see above */ 1169 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1170 softc->filemarks = 0; 1171 1172 error = sarewind(periph); 1173 /* clear the frozen flag anyway */ 1174 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1175 1176 /* 1177 * Be sure to allow media removal before ejecting. 1178 */ 1179 1180 saprevent(periph, PR_ALLOW); 1181 if (error == 0) { 1182 error = saloadunload(periph, FALSE); 1183 if (error == 0) { 1184 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1185 } 1186 } 1187 break; 1188 1189 case MTNOP: /* no operation, sets status only */ 1190 case MTCACHE: /* enable controller cache */ 1191 case MTNOCACHE: /* disable controller cache */ 1192 error = 0; 1193 break; 1194 1195 case MTSETBSIZ: /* Set block size for device */ 1196 1197 PENDING_MOUNT_CHECK(softc, periph, dev); 1198 1199 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1200 0, 0, 0); 1201 if (error == 0) { 1202 softc->last_media_blksize = 1203 softc->media_blksize; 1204 softc->media_blksize = count; 1205 if (count) { 1206 softc->flags |= SA_FLAG_FIXED; 1207 if (powerof2(count)) { 1208 softc->blk_shift = 1209 ffs(count) - 1; 1210 softc->blk_mask = count - 1; 1211 } else { 1212 softc->blk_mask = ~0; 1213 softc->blk_shift = 0; 1214 } 1215 /* 1216 * Make the user's desire 'persistent'. 1217 */ 1218 softc->quirks &= ~SA_QUIRK_VARIABLE; 1219 softc->quirks |= SA_QUIRK_FIXED; 1220 } else { 1221 softc->flags &= ~SA_FLAG_FIXED; 1222 if (softc->max_blk == 0) { 1223 softc->max_blk = ~0; 1224 } 1225 softc->blk_shift = 0; 1226 if (softc->blk_gran != 0) { 1227 softc->blk_mask = 1228 softc->blk_gran - 1; 1229 } else { 1230 softc->blk_mask = 0; 1231 } 1232 /* 1233 * Make the user's desire 'persistent'. 1234 */ 1235 softc->quirks |= SA_QUIRK_VARIABLE; 1236 softc->quirks &= ~SA_QUIRK_FIXED; 1237 } 1238 } 1239 break; 1240 case MTSETDNSTY: /* Set density for device and mode */ 1241 PENDING_MOUNT_CHECK(softc, periph, dev); 1242 1243 if (count > UCHAR_MAX) { 1244 error = EINVAL; 1245 break; 1246 } else { 1247 error = sasetparams(periph, SA_PARAM_DENSITY, 1248 0, count, 0, 0); 1249 } 1250 break; 1251 case MTCOMP: /* enable compression */ 1252 PENDING_MOUNT_CHECK(softc, periph, dev); 1253 /* 1254 * Some devices don't support compression, and 1255 * don't like it if you ask them for the 1256 * compression page. 1257 */ 1258 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1259 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1260 error = ENODEV; 1261 break; 1262 } 1263 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1264 0, 0, count, SF_NO_PRINT); 1265 break; 1266 default: 1267 error = EINVAL; 1268 } 1269 break; 1270 } 1271 case MTIOCIEOT: 1272 case MTIOCEEOT: 1273 error = 0; 1274 break; 1275 case MTIOCRDSPOS: 1276 PENDING_MOUNT_CHECK(softc, periph, dev); 1277 error = sardpos(periph, 0, (u_int32_t *) addr); 1278 break; 1279 case MTIOCRDHPOS: 1280 PENDING_MOUNT_CHECK(softc, periph, dev); 1281 error = sardpos(periph, 1, (u_int32_t *) addr); 1282 break; 1283 case MTIOCSLOCATE: 1284 PENDING_MOUNT_CHECK(softc, periph, dev); 1285 error = sasetpos(periph, 0, (u_int32_t *) addr); 1286 break; 1287 case MTIOCHLOCATE: 1288 PENDING_MOUNT_CHECK(softc, periph, dev); 1289 error = sasetpos(periph, 1, (u_int32_t *) addr); 1290 break; 1291 case MTIOCGETEOTMODEL: 1292 error = 0; 1293 if (softc->quirks & SA_QUIRK_1FM) 1294 mode = 1; 1295 else 1296 mode = 2; 1297 *((u_int32_t *) addr) = mode; 1298 break; 1299 case MTIOCSETEOTMODEL: 1300 error = 0; 1301 switch (*((u_int32_t *) addr)) { 1302 case 1: 1303 softc->quirks &= ~SA_QUIRK_2FM; 1304 softc->quirks |= SA_QUIRK_1FM; 1305 break; 1306 case 2: 1307 softc->quirks &= ~SA_QUIRK_1FM; 1308 softc->quirks |= SA_QUIRK_2FM; 1309 break; 1310 default: 1311 error = EINVAL; 1312 break; 1313 } 1314 break; 1315 default: 1316 error = cam_periph_ioctl(periph, ap->a_cmd, addr, saerror); 1317 break; 1318 } 1319 1320 /* 1321 * Check to see if we cleared a frozen state 1322 */ 1323 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1324 switch(ap->a_cmd) { 1325 case MTIOCRDSPOS: 1326 case MTIOCRDHPOS: 1327 case MTIOCSLOCATE: 1328 case MTIOCHLOCATE: 1329 softc->fileno = (daddr_t) -1; 1330 softc->blkno = (daddr_t) -1; 1331 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1332 xpt_print(periph->path, 1333 "tape state now unfrozen.\n"); 1334 break; 1335 default: 1336 break; 1337 } 1338 } 1339 if (didholdperiph) 1340 cam_periph_unhold(periph, 1); 1341 else 1342 cam_periph_unlock(periph); 1343 return (error); 1344 } 1345 1346 static void 1347 sainit(void) 1348 { 1349 cam_status status; 1350 1351 /* 1352 * Create our extend array for storing the devices we attach to. 1353 */ 1354 saperiphs = cam_extend_new(); 1355 if (saperiphs == NULL) { 1356 kprintf("sa: Failed to alloc extend array!\n"); 1357 return; 1358 } 1359 1360 /* 1361 * Install a global async callback. 1362 */ 1363 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1364 1365 if (status != CAM_REQ_CMP) { 1366 kprintf("sa: Failed to attach master async callback " 1367 "due to status 0x%x!\n", status); 1368 } 1369 } 1370 1371 static void 1372 saoninvalidate(struct cam_periph *periph) 1373 { 1374 struct sa_softc *softc; 1375 struct buf *q_bp; 1376 struct bio *q_bio; 1377 1378 softc = (struct sa_softc *)periph->softc; 1379 1380 /* 1381 * De-register any async callbacks. 1382 */ 1383 xpt_register_async(0, saasync, periph, periph->path); 1384 1385 softc->flags |= SA_FLAG_INVALID; 1386 1387 /* 1388 * Return all queued I/O with ENXIO. 1389 * XXX Handle any transactions queued to the card 1390 * with XPT_ABORT_CCB. 1391 */ 1392 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){ 1393 bioq_remove(&softc->bio_queue, q_bio); 1394 q_bp = q_bio->bio_buf; 1395 q_bp->b_resid = q_bp->b_bcount; 1396 q_bp->b_error = ENXIO; 1397 q_bp->b_flags |= B_ERROR; 1398 biodone(q_bio); 1399 } 1400 softc->queue_count = 0; 1401 1402 xpt_print(periph->path, "lost device\n"); 1403 1404 } 1405 1406 static void 1407 sacleanup(struct cam_periph *periph) 1408 { 1409 struct sa_softc *softc; 1410 1411 softc = (struct sa_softc *)periph->softc; 1412 1413 devstat_remove_entry(&softc->device_stats); 1414 1415 cam_extend_release(saperiphs, periph->unit_number); 1416 xpt_print(periph->path, "removing device entry\n"); 1417 dev_ops_remove_minor(&sa_ops, /*SA_UNITMASK,*/ SA_UNIT(periph->unit_number)); 1418 kfree(softc, M_SCSISA); 1419 } 1420 1421 static void 1422 saasync(void *callback_arg, u_int32_t code, 1423 struct cam_path *path, void *arg) 1424 { 1425 struct cam_periph *periph; 1426 1427 periph = (struct cam_periph *)callback_arg; 1428 switch (code) { 1429 case AC_FOUND_DEVICE: 1430 { 1431 struct ccb_getdev *cgd; 1432 cam_status status; 1433 1434 cgd = (struct ccb_getdev *)arg; 1435 if (cgd == NULL) 1436 break; 1437 1438 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1439 break; 1440 1441 /* 1442 * Allocate a peripheral instance for 1443 * this device and start the probe 1444 * process. 1445 */ 1446 status = cam_periph_alloc(saregister, saoninvalidate, 1447 sacleanup, sastart, 1448 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1449 saasync, AC_FOUND_DEVICE, cgd); 1450 1451 if (status != CAM_REQ_CMP 1452 && status != CAM_REQ_INPROG) 1453 kprintf("saasync: Unable to probe new device " 1454 "due to status 0x%x\n", status); 1455 break; 1456 } 1457 default: 1458 cam_periph_async(periph, code, path, arg); 1459 break; 1460 } 1461 } 1462 1463 static cam_status 1464 saregister(struct cam_periph *periph, void *arg) 1465 { 1466 struct sa_softc *softc; 1467 struct ccb_getdev *cgd; 1468 caddr_t match; 1469 int i; 1470 1471 cgd = (struct ccb_getdev *)arg; 1472 if (periph == NULL) { 1473 kprintf("saregister: periph was NULL!!\n"); 1474 return (CAM_REQ_CMP_ERR); 1475 } 1476 1477 if (cgd == NULL) { 1478 kprintf("saregister: no getdev CCB, can't register device\n"); 1479 return (CAM_REQ_CMP_ERR); 1480 } 1481 1482 softc = kmalloc(sizeof (*softc), M_SCSISA, M_INTWAIT | M_ZERO); 1483 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1484 softc->state = SA_STATE_NORMAL; 1485 softc->fileno = (daddr_t) -1; 1486 softc->blkno = (daddr_t) -1; 1487 1488 bioq_init(&softc->bio_queue); 1489 periph->softc = softc; 1490 cam_extend_set(saperiphs, periph->unit_number, periph); 1491 1492 /* 1493 * See if this device has any quirks. 1494 */ 1495 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1496 (caddr_t)sa_quirk_table, 1497 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1498 sizeof(*sa_quirk_table), scsi_inquiry_match); 1499 1500 if (match != NULL) { 1501 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1502 softc->last_media_blksize = 1503 ((struct sa_quirk_entry *)match)->prefblk; 1504 #ifdef CAMDEBUG 1505 xpt_print(periph->path, "found quirk entry %d\n", 1506 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1507 #endif 1508 } else 1509 softc->quirks = SA_QUIRK_NONE; 1510 1511 /* 1512 * The SA driver supports a blocksize, but we don't know the 1513 * blocksize until we media is inserted. So, set a flag to 1514 * indicate that the blocksize is unavailable right now. 1515 */ 1516 cam_periph_unlock(periph); 1517 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1518 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1519 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1520 1521 make_dev(&sa_ops, SAMINOR(SA_CTLDEV, 1522 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1523 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1524 1525 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1526 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1527 0660, "%s%d", periph->periph_name, periph->unit_number); 1528 1529 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1530 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 1531 0660, "n%s%d", periph->periph_name, periph->unit_number); 1532 1533 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1534 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 1535 0660, "e%s%d", periph->periph_name, periph->unit_number); 1536 1537 for (i = 0; i < SA_NUM_MODES; i++) { 1538 1539 make_dev(&sa_ops, 1540 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1541 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1542 periph->periph_name, periph->unit_number, i); 1543 1544 make_dev(&sa_ops, 1545 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1546 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1547 periph->periph_name, periph->unit_number, i); 1548 1549 1550 make_dev(&sa_ops, 1551 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1552 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1553 periph->periph_name, periph->unit_number, i); 1554 } 1555 cam_periph_lock(periph); 1556 1557 /* 1558 * Add an async callback so that we get 1559 * notified if this device goes away. 1560 */ 1561 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1562 1563 xpt_announce_periph(periph, NULL); 1564 1565 return (CAM_REQ_CMP); 1566 } 1567 1568 static void 1569 sastart(struct cam_periph *periph, union ccb *start_ccb) 1570 { 1571 struct sa_softc *softc; 1572 1573 softc = (struct sa_softc *)periph->softc; 1574 1575 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1576 1577 1578 switch (softc->state) { 1579 case SA_STATE_NORMAL: 1580 { 1581 /* Pull a buffer from the queue and get going on it */ 1582 struct buf *bp; 1583 struct bio *bio; 1584 1585 /* 1586 * See if there is a buf with work for us to do.. 1587 */ 1588 bio = bioq_first(&softc->bio_queue); 1589 if (periph->immediate_priority <= periph->pinfo.priority) { 1590 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1591 ("queuing for immediate ccb\n")); 1592 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1593 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1594 periph_links.sle); 1595 periph->immediate_priority = CAM_PRIORITY_NONE; 1596 wakeup(&periph->ccb_list); 1597 } else if (bio == NULL) { 1598 xpt_release_ccb(start_ccb); 1599 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1600 struct bio *done_bio; 1601 again: 1602 softc->queue_count--; 1603 bioq_remove(&softc->bio_queue, bio); 1604 bp = bio->bio_buf; 1605 bp->b_resid = bp->b_bcount; 1606 done_bio = bio; 1607 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1608 /* 1609 * We now just clear errors in this case 1610 * and let the residual be the notifier. 1611 */ 1612 bp->b_error = 0; 1613 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1614 /* 1615 * This can only happen if we're reading 1616 * in fixed length mode. In this case, 1617 * we dump the rest of the list the 1618 * same way. 1619 */ 1620 bp->b_error = 0; 1621 if (bioq_first(&softc->bio_queue) != NULL) { 1622 biodone(done_bio); 1623 goto again; 1624 } 1625 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1626 bp->b_error = EIO; 1627 bp->b_flags |= B_ERROR; 1628 } 1629 bio = bioq_first(&softc->bio_queue); 1630 /* 1631 * Only if we have no other buffers queued up 1632 * do we clear the pending error flag. 1633 */ 1634 if (bio == NULL) 1635 softc->flags &= ~SA_FLAG_ERR_PENDING; 1636 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1637 ("sastart- ERR_PENDING now 0x%x, bio is %sNULL, " 1638 "%d more buffers queued up\n", 1639 (softc->flags & SA_FLAG_ERR_PENDING), 1640 (bio != NULL)? "not " : " ", softc->queue_count)); 1641 xpt_release_ccb(start_ccb); 1642 biodone(done_bio); 1643 } else { 1644 u_int32_t length; 1645 1646 bioq_remove(&softc->bio_queue, bio); 1647 bp = bio->bio_buf; 1648 softc->queue_count--; 1649 1650 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1651 if (softc->blk_shift != 0) { 1652 length = 1653 bp->b_bcount >> softc->blk_shift; 1654 } else if (softc->media_blksize != 0) { 1655 length = 1656 bp->b_bcount / softc->media_blksize; 1657 } else { 1658 bp->b_error = EIO; 1659 xpt_print(periph->path, "zero blocksize" 1660 " for FIXED length writes?\n"); 1661 biodone(bio); 1662 break; 1663 } 1664 #if 0 1665 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1666 ("issuing a %d fixed record %s\n", 1667 length, (bp->bio_cmd == BIO_READ)? "read" : 1668 "write")); 1669 #endif 1670 } else { 1671 length = bp->b_bcount; 1672 #if 0 1673 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1674 ("issuing a %d variable byte %s\n", 1675 length, (bp->bio_cmd == BIO_READ)? "read" : 1676 "write")); 1677 #endif 1678 } 1679 devstat_start_transaction(&softc->device_stats); 1680 /* 1681 * Some people have theorized that we should 1682 * suppress illegal length indication if we are 1683 * running in variable block mode so that we don't 1684 * have to request sense every time our requested 1685 * block size is larger than the written block. 1686 * The residual information from the ccb allows 1687 * us to identify this situation anyway. The only 1688 * problem with this is that we will not get 1689 * information about blocks that are larger than 1690 * our read buffer unless we set the block size 1691 * in the mode page to something other than 0. 1692 * 1693 * I believe that this is a non-issue. If user apps 1694 * don't adjust their read size to match our record 1695 * size, that's just life. Anyway, the typical usage 1696 * would be to issue, e.g., 64KB reads and occasionally 1697 * have to do deal with 512 byte or 1KB intermediate 1698 * records. 1699 */ 1700 softc->dsreg = (bp->b_cmd == BUF_CMD_READ) ? 1701 MTIO_DSREG_RD : MTIO_DSREG_WR; 1702 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1703 MSG_SIMPLE_Q_TAG, (bp->b_cmd == BUF_CMD_READ) != 0, 1704 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1705 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1706 IO_TIMEOUT); 1707 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1708 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1709 start_ccb->ccb_h.ccb_bio = bio; 1710 bio = bioq_first(&softc->bio_queue); 1711 xpt_action(start_ccb); 1712 } 1713 1714 if (bio != NULL) { 1715 /* Have more work to do, so ensure we stay scheduled */ 1716 xpt_schedule(periph, 1); 1717 } 1718 break; 1719 } 1720 case SA_STATE_ABNORMAL: 1721 default: 1722 panic("state 0x%x in sastart", softc->state); 1723 break; 1724 } 1725 } 1726 1727 1728 static void 1729 sadone(struct cam_periph *periph, union ccb *done_ccb) 1730 { 1731 struct sa_softc *softc; 1732 struct ccb_scsiio *csio; 1733 1734 softc = (struct sa_softc *)periph->softc; 1735 csio = &done_ccb->csio; 1736 switch (CCB_Type(csio)) { 1737 case SA_CCB_BUFFER_IO: 1738 { 1739 struct buf *bp; 1740 struct bio *bio; 1741 int error; 1742 1743 softc->dsreg = MTIO_DSREG_REST; 1744 bio = (struct bio *)done_ccb->ccb_h.ccb_bio; 1745 bp = bio->bio_buf; 1746 error = 0; 1747 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1748 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1749 /* 1750 * A retry was scheduled, so just return. 1751 */ 1752 return; 1753 } 1754 } 1755 1756 if (error == EIO) { 1757 struct buf *q_bp; 1758 struct bio *q_bio; 1759 1760 /* 1761 * Catastrophic error. Mark the tape as frozen 1762 * (we no longer know tape position). 1763 * 1764 * Return all queued I/O with EIO, and unfreeze 1765 * our queue so that future transactions that 1766 * attempt to fix this problem can get to the 1767 * device. 1768 * 1769 */ 1770 1771 softc->flags |= SA_FLAG_TAPE_FROZEN; 1772 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL) { 1773 bioq_remove(&softc->bio_queue, q_bio); 1774 q_bp = q_bio->bio_buf; 1775 q_bp->b_resid = q_bp->b_bcount; 1776 q_bp->b_error = EIO; 1777 q_bp->b_flags |= B_ERROR; 1778 biodone(q_bio); 1779 } 1780 } 1781 if (error != 0) { 1782 bp->b_resid = bp->b_bcount; 1783 bp->b_error = error; 1784 bp->b_flags |= B_ERROR; 1785 /* 1786 * In the error case, position is updated in saerror. 1787 */ 1788 } else { 1789 bp->b_resid = csio->resid; 1790 bp->b_error = 0; 1791 if (csio->resid != 0) { 1792 bp->b_flags |= B_ERROR; 1793 } 1794 if (bp->b_cmd != BUF_CMD_READ) { 1795 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1796 softc->filemarks = 0; 1797 } 1798 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1799 (softc->blkno != (daddr_t) -1)) { 1800 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1801 u_int32_t l; 1802 if (softc->blk_shift != 0) { 1803 l = bp->b_bcount >> 1804 softc->blk_shift; 1805 } else { 1806 l = bp->b_bcount / 1807 softc->media_blksize; 1808 } 1809 softc->blkno += (daddr_t) l; 1810 } else { 1811 softc->blkno++; 1812 } 1813 } 1814 } 1815 /* 1816 * If we had an error (immediate or pending), 1817 * release the device queue now. 1818 */ 1819 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1820 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1821 #ifdef CAMDEBUG 1822 if (error || bp->b_resid) { 1823 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1824 ("error %d resid %d count %d\n", error, 1825 bp->b_resid, bp->b_bcount)); 1826 } 1827 #endif 1828 devstat_end_transaction_buf(&softc->device_stats, bp); 1829 biodone(bio); 1830 break; 1831 } 1832 case SA_CCB_WAITING: 1833 { 1834 /* Caller will release the CCB */ 1835 wakeup(&done_ccb->ccb_h.cbfcnp); 1836 return; 1837 } 1838 } 1839 xpt_release_ccb(done_ccb); 1840 } 1841 1842 /* 1843 * Mount the tape (make sure it's ready for I/O). 1844 */ 1845 static int 1846 samount(struct cam_periph *periph, int oflags, cdev_t dev) 1847 { 1848 struct sa_softc *softc; 1849 union ccb *ccb; 1850 int error; 1851 1852 /* 1853 * oflags can be checked for 'kind' of open (read-only check) - later 1854 * dev can be checked for a control-mode or compression open - later 1855 */ 1856 UNUSED_PARAMETER(oflags); 1857 UNUSED_PARAMETER(dev); 1858 1859 1860 softc = (struct sa_softc *)periph->softc; 1861 1862 /* 1863 * This should determine if something has happend since the last 1864 * open/mount that would invalidate the mount. We do *not* want 1865 * to retry this command- we just want the status. But we only 1866 * do this if we're mounted already- if we're not mounted, 1867 * we don't care about the unit read state and can instead use 1868 * this opportunity to attempt to reserve the tape unit. 1869 */ 1870 1871 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1872 ccb = cam_periph_getccb(periph, 1); 1873 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1874 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1875 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1876 &softc->device_stats); 1877 QFRLS(ccb); 1878 if (error == ENXIO) { 1879 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1880 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1881 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1882 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1883 &softc->device_stats); 1884 QFRLS(ccb); 1885 } else if (error) { 1886 /* 1887 * We don't need to freeze the tape because we 1888 * will now attempt to rewind/load it. 1889 */ 1890 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1891 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1892 xpt_print(periph->path, 1893 "error %d on TUR in samount\n", error); 1894 } 1895 } 1896 } else { 1897 error = sareservereleaseunit(periph, TRUE); 1898 if (error) { 1899 return (error); 1900 } 1901 ccb = cam_periph_getccb(periph, 1); 1902 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1903 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1904 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1905 &softc->device_stats); 1906 QFRLS(ccb); 1907 } 1908 1909 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1910 struct scsi_read_block_limits_data *rblim = NULL; 1911 int comp_enabled, comp_supported; 1912 u_int8_t write_protect, guessing = 0; 1913 1914 /* 1915 * Clear out old state. 1916 */ 1917 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1918 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1919 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1920 softc->filemarks = 0; 1921 1922 /* 1923 * *Very* first off, make sure we're loaded to BOT. 1924 */ 1925 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1926 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1927 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1928 &softc->device_stats); 1929 QFRLS(ccb); 1930 1931 /* 1932 * In case this doesn't work, do a REWIND instead 1933 */ 1934 if (error) { 1935 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1936 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1937 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1938 &softc->device_stats); 1939 QFRLS(ccb); 1940 } 1941 if (error) { 1942 xpt_release_ccb(ccb); 1943 goto exit; 1944 } 1945 1946 /* 1947 * Do a dummy test read to force access to the 1948 * media so that the drive will really know what's 1949 * there. We actually don't really care what the 1950 * blocksize on tape is and don't expect to really 1951 * read a full record. 1952 */ 1953 rblim = kmalloc(8192, M_SCSISA, M_INTWAIT); 1954 1955 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1956 scsi_sa_read_write(&ccb->csio, 0, sadone, 1957 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1958 (void *) rblim, 8192, SSD_FULL_SIZE, 1959 IO_TIMEOUT); 1960 cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1961 &softc->device_stats); 1962 QFRLS(ccb); 1963 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1964 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1965 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1966 SF_NO_PRINT | SF_RETRY_UA, 1967 &softc->device_stats); 1968 QFRLS(ccb); 1969 if (error) { 1970 xpt_print(periph->path, 1971 "unable to rewind after test read\n"); 1972 xpt_release_ccb(ccb); 1973 goto exit; 1974 } 1975 } 1976 1977 /* 1978 * Next off, determine block limits. 1979 */ 1980 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1981 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1982 1983 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1984 SF_NO_PRINT | SF_RETRY_UA, &softc->device_stats); 1985 1986 QFRLS(ccb); 1987 xpt_release_ccb(ccb); 1988 1989 if (error != 0) { 1990 /* 1991 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1992 * a MANDATORY command. Anyway- it doesn't matter- 1993 * we can proceed anyway. 1994 */ 1995 softc->blk_gran = 0; 1996 softc->max_blk = ~0; 1997 softc->min_blk = 0; 1998 } else { 1999 if (softc->scsi_rev >= SCSI_REV_SPC) { 2000 softc->blk_gran = RBL_GRAN(rblim); 2001 } else { 2002 softc->blk_gran = 0; 2003 } 2004 /* 2005 * We take max_blk == min_blk to mean a default to 2006 * fixed mode- but note that whatever we get out of 2007 * sagetparams below will actually determine whether 2008 * we are actually *in* fixed mode. 2009 */ 2010 softc->max_blk = scsi_3btoul(rblim->maximum); 2011 softc->min_blk = scsi_2btoul(rblim->minimum); 2012 2013 2014 } 2015 /* 2016 * Next, perform a mode sense to determine 2017 * current density, blocksize, compression etc. 2018 */ 2019 error = sagetparams(periph, SA_PARAM_ALL, 2020 &softc->media_blksize, 2021 &softc->media_density, 2022 &softc->media_numblks, 2023 &softc->buffer_mode, &write_protect, 2024 &softc->speed, &comp_supported, 2025 &comp_enabled, &softc->comp_algorithm, 2026 NULL); 2027 2028 if (error != 0) { 2029 /* 2030 * We could work a little harder here. We could 2031 * adjust our attempts to get information. It 2032 * might be an ancient tape drive. If someone 2033 * nudges us, we'll do that. 2034 */ 2035 goto exit; 2036 } 2037 2038 /* 2039 * If no quirk has determined that this is a device that is 2040 * preferred to be in fixed or variable mode, now is the time 2041 * to find out. 2042 */ 2043 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2044 guessing = 1; 2045 /* 2046 * This could be expensive to find out. Luckily we 2047 * only need to do this once. If we start out in 2048 * 'default' mode, try and set ourselves to one 2049 * of the densities that would determine a wad 2050 * of other stuff. Go from highest to lowest. 2051 */ 2052 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2053 int i; 2054 static u_int8_t ctry[] = { 2055 SCSI_DENSITY_HALFINCH_PE, 2056 SCSI_DENSITY_HALFINCH_6250C, 2057 SCSI_DENSITY_HALFINCH_6250, 2058 SCSI_DENSITY_HALFINCH_1600, 2059 SCSI_DENSITY_HALFINCH_800, 2060 SCSI_DENSITY_QIC_4GB, 2061 SCSI_DENSITY_QIC_2GB, 2062 SCSI_DENSITY_QIC_525_320, 2063 SCSI_DENSITY_QIC_150, 2064 SCSI_DENSITY_QIC_120, 2065 SCSI_DENSITY_QIC_24, 2066 SCSI_DENSITY_QIC_11_9TRK, 2067 SCSI_DENSITY_QIC_11_4TRK, 2068 SCSI_DENSITY_QIC_1320, 2069 SCSI_DENSITY_QIC_3080, 2070 0 2071 }; 2072 for (i = 0; ctry[i]; i++) { 2073 error = sasetparams(periph, 2074 SA_PARAM_DENSITY, 0, ctry[i], 2075 0, SF_NO_PRINT); 2076 if (error == 0) { 2077 softc->media_density = ctry[i]; 2078 break; 2079 } 2080 } 2081 } 2082 switch (softc->media_density) { 2083 case SCSI_DENSITY_QIC_11_4TRK: 2084 case SCSI_DENSITY_QIC_11_9TRK: 2085 case SCSI_DENSITY_QIC_24: 2086 case SCSI_DENSITY_QIC_120: 2087 case SCSI_DENSITY_QIC_150: 2088 case SCSI_DENSITY_QIC_525_320: 2089 case SCSI_DENSITY_QIC_1320: 2090 case SCSI_DENSITY_QIC_3080: 2091 softc->quirks &= ~SA_QUIRK_2FM; 2092 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2093 softc->last_media_blksize = 512; 2094 break; 2095 case SCSI_DENSITY_QIC_4GB: 2096 case SCSI_DENSITY_QIC_2GB: 2097 softc->quirks &= ~SA_QUIRK_2FM; 2098 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2099 softc->last_media_blksize = 1024; 2100 break; 2101 default: 2102 softc->last_media_blksize = 2103 softc->media_blksize; 2104 softc->quirks |= SA_QUIRK_VARIABLE; 2105 break; 2106 } 2107 } 2108 2109 /* 2110 * If no quirk has determined that this is a device that needs 2111 * to have 2 Filemarks at EOD, now is the time to find out. 2112 */ 2113 2114 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2115 switch (softc->media_density) { 2116 case SCSI_DENSITY_HALFINCH_800: 2117 case SCSI_DENSITY_HALFINCH_1600: 2118 case SCSI_DENSITY_HALFINCH_6250: 2119 case SCSI_DENSITY_HALFINCH_6250C: 2120 case SCSI_DENSITY_HALFINCH_PE: 2121 softc->quirks &= ~SA_QUIRK_1FM; 2122 softc->quirks |= SA_QUIRK_2FM; 2123 break; 2124 default: 2125 break; 2126 } 2127 } 2128 2129 /* 2130 * Now validate that some info we got makes sense. 2131 */ 2132 if ((softc->max_blk < softc->media_blksize) || 2133 (softc->min_blk > softc->media_blksize && 2134 softc->media_blksize)) { 2135 xpt_print(periph->path, 2136 "BLOCK LIMITS (%d..%d) could not match current " 2137 "block settings (%d)- adjusting\n", softc->min_blk, 2138 softc->max_blk, softc->media_blksize); 2139 softc->max_blk = softc->min_blk = 2140 softc->media_blksize; 2141 } 2142 2143 /* 2144 * Now put ourselves into the right frame of mind based 2145 * upon quirks... 2146 */ 2147 tryagain: 2148 /* 2149 * If we want to be in FIXED mode and our current blocksize 2150 * is not equal to our last blocksize (if nonzero), try and 2151 * set ourselves to this last blocksize (as the 'preferred' 2152 * block size). The initial quirkmatch at registry sets the 2153 * initial 'last' blocksize. If, for whatever reason, this 2154 * 'last' blocksize is zero, set the blocksize to 512, 2155 * or min_blk if that's larger. 2156 */ 2157 if ((softc->quirks & SA_QUIRK_FIXED) && 2158 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2159 (softc->media_blksize != softc->last_media_blksize)) { 2160 softc->media_blksize = softc->last_media_blksize; 2161 if (softc->media_blksize == 0) { 2162 softc->media_blksize = 512; 2163 if (softc->media_blksize < softc->min_blk) { 2164 softc->media_blksize = softc->min_blk; 2165 } 2166 } 2167 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2168 softc->media_blksize, 0, 0, SF_NO_PRINT); 2169 if (error) { 2170 xpt_print(periph->path, 2171 "unable to set fixed blocksize to %d\n", 2172 softc->media_blksize); 2173 goto exit; 2174 } 2175 } 2176 2177 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2178 (softc->media_blksize != 0)) { 2179 softc->last_media_blksize = softc->media_blksize; 2180 softc->media_blksize = 0; 2181 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2182 0, 0, 0, SF_NO_PRINT); 2183 if (error) { 2184 /* 2185 * If this fails and we were guessing, just 2186 * assume that we got it wrong and go try 2187 * fixed block mode. Don't even check against 2188 * density code at this point. 2189 */ 2190 if (guessing) { 2191 softc->quirks &= ~SA_QUIRK_VARIABLE; 2192 softc->quirks |= SA_QUIRK_FIXED; 2193 if (softc->last_media_blksize == 0) 2194 softc->last_media_blksize = 512; 2195 goto tryagain; 2196 } 2197 xpt_print(periph->path, 2198 "unable to set variable blocksize\n"); 2199 goto exit; 2200 } 2201 } 2202 2203 /* 2204 * Now that we have the current block size, 2205 * set up some parameters for sastart's usage. 2206 */ 2207 if (softc->media_blksize) { 2208 softc->flags |= SA_FLAG_FIXED; 2209 if (powerof2(softc->media_blksize)) { 2210 softc->blk_shift = 2211 ffs(softc->media_blksize) - 1; 2212 softc->blk_mask = softc->media_blksize - 1; 2213 } else { 2214 softc->blk_mask = ~0; 2215 softc->blk_shift = 0; 2216 } 2217 } else { 2218 /* 2219 * The SCSI-3 spec allows 0 to mean "unspecified". 2220 * The SCSI-1 spec allows 0 to mean 'infinite'. 2221 * 2222 * Either works here. 2223 */ 2224 if (softc->max_blk == 0) { 2225 softc->max_blk = ~0; 2226 } 2227 softc->blk_shift = 0; 2228 if (softc->blk_gran != 0) { 2229 softc->blk_mask = softc->blk_gran - 1; 2230 } else { 2231 softc->blk_mask = 0; 2232 } 2233 } 2234 2235 if (write_protect) 2236 softc->flags |= SA_FLAG_TAPE_WP; 2237 2238 if (comp_supported) { 2239 if (softc->saved_comp_algorithm == 0) 2240 softc->saved_comp_algorithm = 2241 softc->comp_algorithm; 2242 softc->flags |= SA_FLAG_COMP_SUPP; 2243 if (comp_enabled) 2244 softc->flags |= SA_FLAG_COMP_ENABLED; 2245 } else 2246 softc->flags |= SA_FLAG_COMP_UNSUPP; 2247 2248 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2249 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2250 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2251 0, 0, SF_NO_PRINT); 2252 if (error == 0) { 2253 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2254 } else { 2255 xpt_print(periph->path, 2256 "unable to set buffered mode\n"); 2257 } 2258 error = 0; /* not an error */ 2259 } 2260 2261 2262 if (error == 0) { 2263 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2264 } 2265 exit: 2266 if (rblim != NULL) 2267 kfree(rblim, M_SCSISA); 2268 2269 if (error != 0) { 2270 softc->dsreg = MTIO_DSREG_NIL; 2271 } else { 2272 softc->fileno = softc->blkno = 0; 2273 softc->dsreg = MTIO_DSREG_REST; 2274 } 2275 #ifdef SA_1FM_AT_EOD 2276 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2277 softc->quirks |= SA_QUIRK_1FM; 2278 #else 2279 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2280 softc->quirks |= SA_QUIRK_2FM; 2281 #endif 2282 } else 2283 xpt_release_ccb(ccb); 2284 2285 /* 2286 * If we return an error, we're not mounted any more, 2287 * so release any device reservation. 2288 */ 2289 if (error != 0) { 2290 sareservereleaseunit(periph, FALSE); 2291 } else { 2292 /* 2293 * Clear I/O residual. 2294 */ 2295 softc->last_io_resid = 0; 2296 softc->last_ctl_resid = 0; 2297 } 2298 return (error); 2299 } 2300 2301 /* 2302 * How many filemarks do we need to write if we were to terminate the 2303 * tape session right now? Note that this can be a negative number 2304 */ 2305 2306 static int 2307 samarkswanted(struct cam_periph *periph) 2308 { 2309 int markswanted; 2310 struct sa_softc *softc; 2311 2312 softc = (struct sa_softc *)periph->softc; 2313 markswanted = 0; 2314 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2315 markswanted++; 2316 if (softc->quirks & SA_QUIRK_2FM) 2317 markswanted++; 2318 } 2319 markswanted -= softc->filemarks; 2320 return (markswanted); 2321 } 2322 2323 static int 2324 sacheckeod(struct cam_periph *periph) 2325 { 2326 int error; 2327 int markswanted; 2328 2329 markswanted = samarkswanted(periph); 2330 2331 if (markswanted > 0) { 2332 error = sawritefilemarks(periph, markswanted, FALSE); 2333 } else { 2334 error = 0; 2335 } 2336 return (error); 2337 } 2338 2339 static int 2340 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2341 { 2342 static const char *toobig = 2343 "%d-byte tape record bigger than supplied buffer\n"; 2344 struct cam_periph *periph; 2345 struct sa_softc *softc; 2346 struct ccb_scsiio *csio; 2347 struct scsi_sense_data *sense; 2348 u_int32_t resid = 0; 2349 int32_t info = 0; 2350 cam_status status; 2351 int error_code, sense_key, asc, ascq, error, aqvalid; 2352 2353 periph = xpt_path_periph(ccb->ccb_h.path); 2354 softc = (struct sa_softc *)periph->softc; 2355 csio = &ccb->csio; 2356 sense = &csio->sense_data; 2357 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2358 aqvalid = sense->extra_len >= 6; 2359 error = 0; 2360 2361 status = csio->ccb_h.status & CAM_STATUS_MASK; 2362 2363 /* 2364 * Calculate/latch up, any residuals... We do this in a funny 2-step 2365 * so we can print stuff here if we have CAM_DEBUG enabled for this 2366 * unit. 2367 */ 2368 if (status == CAM_SCSI_STATUS_ERROR) { 2369 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2370 info = (int32_t) scsi_4btoul(sense->info); 2371 resid = info; 2372 if ((softc->flags & SA_FLAG_FIXED) != 0) 2373 resid *= softc->media_blksize; 2374 } else { 2375 resid = csio->dxfer_len; 2376 info = resid; 2377 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2378 if (softc->media_blksize) 2379 info /= softc->media_blksize; 2380 } 2381 } 2382 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2383 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2384 sizeof (struct scsi_sense_data)); 2385 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2386 (int) csio->cdb_len); 2387 softc->last_io_resid = resid; 2388 softc->last_resid_was_io = 1; 2389 } else { 2390 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2391 sizeof (struct scsi_sense_data)); 2392 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2393 (int) csio->cdb_len); 2394 softc->last_ctl_resid = resid; 2395 softc->last_resid_was_io = 0; 2396 } 2397 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2398 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2399 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2400 sense_key, asc, ascq, status, 2401 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2402 } else { 2403 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2404 ("Cam Status 0x%x\n", status)); 2405 } 2406 2407 switch (status) { 2408 case CAM_REQ_CMP: 2409 return (0); 2410 case CAM_SCSI_STATUS_ERROR: 2411 /* 2412 * If a read/write command, we handle it here. 2413 */ 2414 if (CCB_Type(csio) != SA_CCB_WAITING) { 2415 break; 2416 } 2417 /* 2418 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2419 * on a non read/write command, we assume it's not an error 2420 * and propagate the residule and return. 2421 */ 2422 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2423 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2424 csio->resid = resid; 2425 QFRLS(ccb); 2426 return (0); 2427 } 2428 /* 2429 * Otherwise, we let the common code handle this. 2430 */ 2431 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2432 2433 /* 2434 * XXX: To Be Fixed 2435 * We cannot depend upon CAM honoring retry counts for these. 2436 */ 2437 case CAM_SCSI_BUS_RESET: 2438 case CAM_BDR_SENT: 2439 if (ccb->ccb_h.retry_count <= 0) { 2440 return (EIO); 2441 } 2442 /* FALLTHROUGH */ 2443 default: 2444 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2445 } 2446 2447 /* 2448 * Handle filemark, end of tape, mismatched record sizes.... 2449 * From this point out, we're only handling read/write cases. 2450 * Handle writes && reads differently. 2451 */ 2452 2453 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2454 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2455 csio->resid = resid; 2456 error = ENOSPC; 2457 } else if (sense->flags & SSD_EOM) { 2458 softc->flags |= SA_FLAG_EOM_PENDING; 2459 /* 2460 * Grotesque as it seems, the few times 2461 * I've actually seen a non-zero resid, 2462 * the tape drive actually lied and had 2463 * written all the data!. 2464 */ 2465 csio->resid = 0; 2466 } 2467 } else { 2468 csio->resid = resid; 2469 if (sense_key == SSD_KEY_BLANK_CHECK) { 2470 if (softc->quirks & SA_QUIRK_1FM) { 2471 error = 0; 2472 softc->flags |= SA_FLAG_EOM_PENDING; 2473 } else { 2474 error = EIO; 2475 } 2476 } else if (sense->flags & SSD_FILEMARK) { 2477 if (softc->flags & SA_FLAG_FIXED) { 2478 error = -1; 2479 softc->flags |= SA_FLAG_EOF_PENDING; 2480 } 2481 /* 2482 * Unconditionally, if we detected a filemark on a read, 2483 * mark that we've run moved a file ahead. 2484 */ 2485 if (softc->fileno != (daddr_t) -1) { 2486 softc->fileno++; 2487 softc->blkno = 0; 2488 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2489 } 2490 } 2491 } 2492 2493 /* 2494 * Incorrect Length usually applies to read, but can apply to writes. 2495 */ 2496 if (error == 0 && (sense->flags & SSD_ILI)) { 2497 if (info < 0) { 2498 xpt_print(csio->ccb_h.path, toobig, 2499 csio->dxfer_len - info); 2500 csio->resid = csio->dxfer_len; 2501 error = EIO; 2502 } else { 2503 csio->resid = resid; 2504 if (softc->flags & SA_FLAG_FIXED) { 2505 softc->flags |= SA_FLAG_EIO_PENDING; 2506 } 2507 /* 2508 * Bump the block number if we hadn't seen a filemark. 2509 * Do this independent of errors (we've moved anyway). 2510 */ 2511 if ((sense->flags & SSD_FILEMARK) == 0) { 2512 if (softc->blkno != (daddr_t) -1) { 2513 softc->blkno++; 2514 csio->ccb_h.ccb_pflags |= 2515 SA_POSITION_UPDATED; 2516 } 2517 } 2518 } 2519 } 2520 2521 if (error <= 0) { 2522 /* 2523 * Unfreeze the queue if frozen as we're not returning anything 2524 * to our waiters that would indicate an I/O error has occurred 2525 * (yet). 2526 */ 2527 QFRLS(ccb); 2528 error = 0; 2529 } 2530 return (error); 2531 } 2532 2533 static int 2534 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2535 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2536 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2537 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2538 sa_comp_t *tcs) 2539 { 2540 union ccb *ccb; 2541 void *mode_buffer; 2542 struct scsi_mode_header_6 *mode_hdr; 2543 struct scsi_mode_blk_desc *mode_blk; 2544 int mode_buffer_len; 2545 struct sa_softc *softc; 2546 u_int8_t cpage; 2547 int error; 2548 cam_status status; 2549 2550 softc = (struct sa_softc *)periph->softc; 2551 ccb = cam_periph_getccb(periph, 1); 2552 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2553 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2554 else 2555 cpage = SA_DATA_COMPRESSION_PAGE; 2556 2557 retry: 2558 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2559 2560 if (params_to_get & SA_PARAM_COMPRESSION) { 2561 if (softc->quirks & SA_QUIRK_NOCOMP) { 2562 *comp_supported = FALSE; 2563 params_to_get &= ~SA_PARAM_COMPRESSION; 2564 } else 2565 mode_buffer_len += sizeof (sa_comp_t); 2566 } 2567 2568 mode_buffer = kmalloc(mode_buffer_len, M_SCSISA, M_INTWAIT | M_ZERO); 2569 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2570 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2571 2572 /* it is safe to retry this */ 2573 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2574 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2575 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2576 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2577 2578 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2579 &softc->device_stats); 2580 QFRLS(ccb); 2581 2582 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2583 2584 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2585 /* 2586 * Hmm. Let's see if we can try another page... 2587 * If we've already done that, give up on compression 2588 * for this device and remember this for the future 2589 * and attempt the request without asking for compression 2590 * info. 2591 */ 2592 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2593 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2594 goto retry; 2595 } 2596 softc->quirks |= SA_QUIRK_NOCOMP; 2597 kfree(mode_buffer, M_SCSISA); 2598 goto retry; 2599 } else if (status == CAM_SCSI_STATUS_ERROR) { 2600 /* Tell the user about the fatal error. */ 2601 scsi_sense_print(&ccb->csio); 2602 goto sagetparamsexit; 2603 } 2604 2605 /* 2606 * If the user only wants the compression information, and 2607 * the device doesn't send back the block descriptor, it's 2608 * no big deal. If the user wants more than just 2609 * compression, though, and the device doesn't pass back the 2610 * block descriptor, we need to send another mode sense to 2611 * get the block descriptor. 2612 */ 2613 if ((mode_hdr->blk_desc_len == 0) && 2614 (params_to_get & SA_PARAM_COMPRESSION) && 2615 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2616 2617 /* 2618 * Decrease the mode buffer length by the size of 2619 * the compression page, to make sure the data 2620 * there doesn't get overwritten. 2621 */ 2622 mode_buffer_len -= sizeof (sa_comp_t); 2623 2624 /* 2625 * Now move the compression page that we presumably 2626 * got back down the memory chunk a little bit so 2627 * it doesn't get spammed. 2628 */ 2629 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2630 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2631 2632 /* 2633 * Now, we issue another mode sense and just ask 2634 * for the block descriptor, etc. 2635 */ 2636 2637 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2638 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2639 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2640 SCSIOP_TIMEOUT); 2641 2642 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2643 &softc->device_stats); 2644 QFRLS(ccb); 2645 2646 if (error != 0) 2647 goto sagetparamsexit; 2648 } 2649 2650 if (params_to_get & SA_PARAM_BLOCKSIZE) 2651 *blocksize = scsi_3btoul(mode_blk->blklen); 2652 2653 if (params_to_get & SA_PARAM_NUMBLOCKS) 2654 *numblocks = scsi_3btoul(mode_blk->nblocks); 2655 2656 if (params_to_get & SA_PARAM_BUFF_MODE) 2657 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2658 2659 if (params_to_get & SA_PARAM_DENSITY) 2660 *density = mode_blk->density; 2661 2662 if (params_to_get & SA_PARAM_WP) 2663 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2664 2665 if (params_to_get & SA_PARAM_SPEED) 2666 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2667 2668 if (params_to_get & SA_PARAM_COMPRESSION) { 2669 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2670 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2671 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2672 *comp_supported = 2673 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2674 *comp_enabled = 2675 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2676 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2677 } else { 2678 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2679 /* 2680 * We don't really know whether this device supports 2681 * Data Compression if the the algorithm field is 2682 * zero. Just say we do. 2683 */ 2684 *comp_supported = TRUE; 2685 *comp_enabled = 2686 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2687 *comp_algorithm = cp->sel_comp_alg; 2688 } 2689 if (tcs != NULL) 2690 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2691 } 2692 2693 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2694 int idx; 2695 char *xyz = mode_buffer; 2696 xpt_print_path(periph->path); 2697 kprintf("Mode Sense Data="); 2698 for (idx = 0; idx < mode_buffer_len; idx++) 2699 kprintf(" 0x%02x", xyz[idx] & 0xff); 2700 kprintf("\n"); 2701 } 2702 2703 sagetparamsexit: 2704 2705 xpt_release_ccb(ccb); 2706 kfree(mode_buffer, M_SCSISA); 2707 return (error); 2708 } 2709 2710 /* 2711 * The purpose of this function is to set one of four different parameters 2712 * for a tape drive: 2713 * - blocksize 2714 * - density 2715 * - compression / compression algorithm 2716 * - buffering mode 2717 * 2718 * The assumption is that this will be called from saioctl(), and therefore 2719 * from a process context. Thus the waiting malloc calls below. If that 2720 * assumption ever changes, the malloc calls should be changed to be 2721 * NOWAIT mallocs. 2722 * 2723 * Any or all of the four parameters may be set when this function is 2724 * called. It should handle setting more than one parameter at once. 2725 */ 2726 static int 2727 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2728 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2729 u_int32_t sense_flags) 2730 { 2731 struct sa_softc *softc; 2732 u_int32_t current_blocksize; 2733 u_int32_t current_calg; 2734 u_int8_t current_density; 2735 u_int8_t current_speed; 2736 int comp_enabled, comp_supported; 2737 void *mode_buffer; 2738 int mode_buffer_len; 2739 struct scsi_mode_header_6 *mode_hdr; 2740 struct scsi_mode_blk_desc *mode_blk; 2741 sa_comp_t *ccomp, *cpage; 2742 int buff_mode; 2743 union ccb *ccb = NULL; 2744 int error; 2745 2746 softc = (struct sa_softc *)periph->softc; 2747 2748 ccomp = kmalloc(sizeof (sa_comp_t), M_SCSISA, M_INTWAIT); 2749 2750 /* 2751 * Since it doesn't make sense to set the number of blocks, or 2752 * write protection, we won't try to get the current value. We 2753 * always want to get the blocksize, so we can set it back to the 2754 * proper value. 2755 */ 2756 error = sagetparams(periph, 2757 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2758 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2759 ¤t_speed, &comp_supported, &comp_enabled, 2760 ¤t_calg, ccomp); 2761 2762 if (error != 0) { 2763 kfree(ccomp, M_SCSISA); 2764 return (error); 2765 } 2766 2767 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2768 if (params_to_set & SA_PARAM_COMPRESSION) 2769 mode_buffer_len += sizeof (sa_comp_t); 2770 2771 mode_buffer = kmalloc(mode_buffer_len, M_SCSISA, M_INTWAIT | M_ZERO); 2772 2773 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2774 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2775 2776 ccb = cam_periph_getccb(periph, 1); 2777 2778 retry: 2779 2780 if (params_to_set & SA_PARAM_COMPRESSION) { 2781 if (mode_blk) { 2782 cpage = (sa_comp_t *)&mode_blk[1]; 2783 } else { 2784 cpage = (sa_comp_t *)&mode_hdr[1]; 2785 } 2786 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2787 cpage->hdr.pagecode &= ~0x80; 2788 } else 2789 cpage = NULL; 2790 2791 /* 2792 * If the caller wants us to set the blocksize, use the one they 2793 * pass in. Otherwise, use the blocksize we got back from the 2794 * mode select above. 2795 */ 2796 if (mode_blk) { 2797 if (params_to_set & SA_PARAM_BLOCKSIZE) 2798 scsi_ulto3b(blocksize, mode_blk->blklen); 2799 else 2800 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2801 2802 /* 2803 * Set density if requested, else preserve old density. 2804 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2805 * devices, else density we've latched up in our softc. 2806 */ 2807 if (params_to_set & SA_PARAM_DENSITY) { 2808 mode_blk->density = density; 2809 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2810 mode_blk->density = SCSI_SAME_DENSITY; 2811 } else { 2812 mode_blk->density = softc->media_density; 2813 } 2814 } 2815 2816 /* 2817 * For mode selects, these two fields must be zero. 2818 */ 2819 mode_hdr->data_length = 0; 2820 mode_hdr->medium_type = 0; 2821 2822 /* set the speed to the current value */ 2823 mode_hdr->dev_spec = current_speed; 2824 2825 /* if set, set single-initiator buffering mode */ 2826 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2827 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2828 } 2829 2830 if (mode_blk) 2831 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2832 else 2833 mode_hdr->blk_desc_len = 0; 2834 2835 /* 2836 * First, if the user wants us to set the compression algorithm or 2837 * just turn compression on, check to make sure that this drive 2838 * supports compression. 2839 */ 2840 if (params_to_set & SA_PARAM_COMPRESSION) { 2841 /* 2842 * If the compression algorithm is 0, disable compression. 2843 * If the compression algorithm is non-zero, enable 2844 * compression and set the compression type to the 2845 * specified compression algorithm, unless the algorithm is 2846 * MT_COMP_ENABLE. In that case, we look at the 2847 * compression algorithm that is currently set and if it is 2848 * non-zero, we leave it as-is. If it is zero, and we have 2849 * saved a compression algorithm from a time when 2850 * compression was enabled before, set the compression to 2851 * the saved value. 2852 */ 2853 switch (ccomp->hdr.pagecode & ~0x80) { 2854 case SA_DEVICE_CONFIGURATION_PAGE: 2855 { 2856 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2857 if (calg == 0) { 2858 dcp->sel_comp_alg = SA_COMP_NONE; 2859 break; 2860 } 2861 if (calg != MT_COMP_ENABLE) { 2862 dcp->sel_comp_alg = calg; 2863 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2864 softc->saved_comp_algorithm != 0) { 2865 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2866 } 2867 break; 2868 } 2869 case SA_DATA_COMPRESSION_PAGE: 2870 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2871 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2872 if (calg == 0) { 2873 /* 2874 * Disable compression, but leave the 2875 * decompression and the capability bit 2876 * alone. 2877 */ 2878 dcp->dce_and_dcc = SA_DCP_DCC; 2879 dcp->dde_and_red |= SA_DCP_DDE; 2880 break; 2881 } 2882 /* enable compression && decompression */ 2883 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2884 dcp->dde_and_red |= SA_DCP_DDE; 2885 /* 2886 * If there, use compression algorithm from caller. 2887 * Otherwise, if there's a saved compression algorithm 2888 * and there is no current algorithm, use the saved 2889 * algorithm. Else parrot back what we got and hope 2890 * for the best. 2891 */ 2892 if (calg != MT_COMP_ENABLE) { 2893 scsi_ulto4b(calg, dcp->comp_algorithm); 2894 scsi_ulto4b(calg, dcp->decomp_algorithm); 2895 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2896 softc->saved_comp_algorithm != 0) { 2897 scsi_ulto4b(softc->saved_comp_algorithm, 2898 dcp->comp_algorithm); 2899 scsi_ulto4b(softc->saved_comp_algorithm, 2900 dcp->decomp_algorithm); 2901 } 2902 break; 2903 } 2904 /* 2905 * Compression does not appear to be supported- 2906 * at least via the DATA COMPRESSION page. It 2907 * would be too much to ask us to believe that 2908 * the page itself is supported, but incorrectly 2909 * reports an ability to manipulate data compression, 2910 * so we'll assume that this device doesn't support 2911 * compression. We can just fall through for that. 2912 */ 2913 /* FALLTHROUGH */ 2914 default: 2915 /* 2916 * The drive doesn't seem to support compression, 2917 * so turn off the set compression bit. 2918 */ 2919 params_to_set &= ~SA_PARAM_COMPRESSION; 2920 xpt_print(periph->path, 2921 "device does not seem to support compression\n"); 2922 2923 /* 2924 * If that was the only thing the user wanted us to set, 2925 * clean up allocated resources and return with 2926 * 'operation not supported'. 2927 */ 2928 if (params_to_set == SA_PARAM_NONE) { 2929 kfree(mode_buffer, M_SCSISA); 2930 xpt_release_ccb(ccb); 2931 return (ENODEV); 2932 } 2933 2934 /* 2935 * That wasn't the only thing the user wanted us to set. 2936 * So, decrease the stated mode buffer length by the 2937 * size of the compression mode page. 2938 */ 2939 mode_buffer_len -= sizeof(sa_comp_t); 2940 } 2941 } 2942 2943 /* It is safe to retry this operation */ 2944 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2945 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2946 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2947 2948 error = cam_periph_runccb(ccb, saerror, 0, 2949 sense_flags, &softc->device_stats); 2950 QFRLS(ccb); 2951 2952 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2953 int idx; 2954 char *xyz = mode_buffer; 2955 xpt_print_path(periph->path); 2956 kprintf("Err%d, Mode Select Data=", error); 2957 for (idx = 0; idx < mode_buffer_len; idx++) 2958 kprintf(" 0x%02x", xyz[idx] & 0xff); 2959 kprintf("\n"); 2960 } 2961 2962 2963 if (error) { 2964 /* 2965 * If we can, try without setting density/blocksize. 2966 */ 2967 if (mode_blk) { 2968 if ((params_to_set & 2969 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2970 mode_blk = NULL; 2971 goto retry; 2972 } 2973 } else { 2974 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2975 cpage = (sa_comp_t *)&mode_blk[1]; 2976 } 2977 2978 /* 2979 * If we were setting the blocksize, and that failed, we 2980 * want to set it to its original value. If we weren't 2981 * setting the blocksize, we don't want to change it. 2982 */ 2983 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2984 2985 /* 2986 * Set density if requested, else preserve old density. 2987 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2988 * devices, else density we've latched up in our softc. 2989 */ 2990 if (params_to_set & SA_PARAM_DENSITY) { 2991 mode_blk->density = current_density; 2992 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2993 mode_blk->density = SCSI_SAME_DENSITY; 2994 } else { 2995 mode_blk->density = softc->media_density; 2996 } 2997 2998 if (params_to_set & SA_PARAM_COMPRESSION) 2999 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3000 3001 /* 3002 * The retry count is the only CCB field that might have been 3003 * changed that we care about, so reset it back to 1. 3004 */ 3005 ccb->ccb_h.retry_count = 1; 3006 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3007 &softc->device_stats); 3008 QFRLS(ccb); 3009 } 3010 3011 xpt_release_ccb(ccb); 3012 3013 if (ccomp != NULL) 3014 kfree(ccomp, M_SCSISA); 3015 3016 if (params_to_set & SA_PARAM_COMPRESSION) { 3017 if (error) { 3018 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3019 /* 3020 * Even if we get an error setting compression, 3021 * do not say that we don't support it. We could 3022 * have been wrong, or it may be media specific. 3023 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3024 */ 3025 softc->saved_comp_algorithm = softc->comp_algorithm; 3026 softc->comp_algorithm = 0; 3027 } else { 3028 softc->flags |= SA_FLAG_COMP_ENABLED; 3029 softc->comp_algorithm = calg; 3030 } 3031 } 3032 3033 kfree(mode_buffer, M_SCSISA); 3034 return (error); 3035 } 3036 3037 static void 3038 saprevent(struct cam_periph *periph, int action) 3039 { 3040 struct sa_softc *softc; 3041 union ccb *ccb; 3042 int error, sf; 3043 3044 softc = (struct sa_softc *)periph->softc; 3045 3046 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3047 return; 3048 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3049 return; 3050 3051 /* 3052 * We can be quiet about illegal requests. 3053 */ 3054 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3055 sf = 0; 3056 } else 3057 sf = SF_QUIET_IR; 3058 3059 ccb = cam_periph_getccb(periph, 1); 3060 3061 /* It is safe to retry this operation */ 3062 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3063 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3064 3065 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 3066 QFRLS(ccb); 3067 if (error == 0) { 3068 if (action == PR_ALLOW) 3069 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3070 else 3071 softc->flags |= SA_FLAG_TAPE_LOCKED; 3072 } 3073 3074 xpt_release_ccb(ccb); 3075 } 3076 3077 static int 3078 sarewind(struct cam_periph *periph) 3079 { 3080 union ccb *ccb; 3081 struct sa_softc *softc; 3082 int error; 3083 3084 softc = (struct sa_softc *)periph->softc; 3085 3086 ccb = cam_periph_getccb(periph, 1); 3087 3088 /* It is safe to retry this operation */ 3089 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3090 SSD_FULL_SIZE, REWIND_TIMEOUT); 3091 3092 softc->dsreg = MTIO_DSREG_REW; 3093 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3094 softc->dsreg = MTIO_DSREG_REST; 3095 3096 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3097 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3098 3099 xpt_release_ccb(ccb); 3100 if (error == 0) 3101 softc->fileno = softc->blkno = (daddr_t) 0; 3102 else 3103 softc->fileno = softc->blkno = (daddr_t) -1; 3104 return (error); 3105 } 3106 3107 static int 3108 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3109 { 3110 union ccb *ccb; 3111 struct sa_softc *softc; 3112 int error; 3113 3114 softc = (struct sa_softc *)periph->softc; 3115 3116 ccb = cam_periph_getccb(periph, 1); 3117 3118 /* This cannot be retried */ 3119 3120 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3121 SSD_FULL_SIZE, SPACE_TIMEOUT); 3122 3123 /* 3124 * Clear residual because we will be using it. 3125 */ 3126 softc->last_ctl_resid = 0; 3127 3128 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3129 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3130 softc->dsreg = MTIO_DSREG_REST; 3131 3132 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3133 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3134 3135 xpt_release_ccb(ccb); 3136 3137 /* 3138 * If a spacing operation has failed, we need to invalidate 3139 * this mount. 3140 * 3141 * If the spacing operation was setmarks or to end of recorded data, 3142 * we no longer know our relative position. 3143 * 3144 * If the spacing operations was spacing files in reverse, we 3145 * take account of the residual, but still check against less 3146 * than zero- if we've gone negative, we must have hit BOT. 3147 * 3148 * If the spacing operations was spacing records in reverse and 3149 * we have a residual, we've either hit BOT or hit a filemark. 3150 * In the former case, we know our new record number (0). In 3151 * the latter case, we have absolutely no idea what the real 3152 * record number is- we've stopped between the end of the last 3153 * record in the previous file and the filemark that stopped 3154 * our spacing backwards. 3155 */ 3156 if (error) { 3157 softc->fileno = softc->blkno = (daddr_t) -1; 3158 } else if (code == SS_SETMARKS || code == SS_EOD) { 3159 softc->fileno = softc->blkno = (daddr_t) -1; 3160 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3161 softc->fileno += (count - softc->last_ctl_resid); 3162 if (softc->fileno < 0) /* we must of hit BOT */ 3163 softc->fileno = 0; 3164 softc->blkno = 0; 3165 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3166 softc->blkno += (count - softc->last_ctl_resid); 3167 if (count < 0) { 3168 if (softc->last_ctl_resid || softc->blkno < 0) { 3169 if (softc->fileno == 0) { 3170 softc->blkno = 0; 3171 } else { 3172 softc->blkno = (daddr_t) -1; 3173 } 3174 } 3175 } 3176 } 3177 return (error); 3178 } 3179 3180 static int 3181 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3182 { 3183 union ccb *ccb; 3184 struct sa_softc *softc; 3185 int error, nwm = 0; 3186 3187 softc = (struct sa_softc *)periph->softc; 3188 if (softc->open_rdonly) 3189 return (EBADF); 3190 3191 ccb = cam_periph_getccb(periph, 1); 3192 /* 3193 * Clear residual because we will be using it. 3194 */ 3195 softc->last_ctl_resid = 0; 3196 3197 softc->dsreg = MTIO_DSREG_FMK; 3198 /* this *must* not be retried */ 3199 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3200 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3201 softc->dsreg = MTIO_DSREG_REST; 3202 3203 3204 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3205 3206 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3207 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3208 3209 if (error == 0 && nmarks) { 3210 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3211 nwm = nmarks - softc->last_ctl_resid; 3212 softc->filemarks += nwm; 3213 } 3214 3215 xpt_release_ccb(ccb); 3216 3217 /* 3218 * Update relative positions (if we're doing that). 3219 */ 3220 if (error) { 3221 softc->fileno = softc->blkno = (daddr_t) -1; 3222 } else if (softc->fileno != (daddr_t) -1) { 3223 softc->fileno += nwm; 3224 softc->blkno = 0; 3225 } 3226 return (error); 3227 } 3228 3229 static int 3230 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3231 { 3232 struct scsi_tape_position_data loc; 3233 union ccb *ccb; 3234 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3235 int error; 3236 3237 /* 3238 * We try and flush any buffered writes here if we were writing 3239 * and we're trying to get hardware block position. It eats 3240 * up performance substantially, but I'm wary of drive firmware. 3241 * 3242 * I think that *logical* block position is probably okay- 3243 * but hardware block position might have to wait for data 3244 * to hit media to be valid. Caveat Emptor. 3245 */ 3246 3247 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3248 error = sawritefilemarks(periph, 0, 0); 3249 if (error && error != EACCES) 3250 return (error); 3251 } 3252 3253 ccb = cam_periph_getccb(periph, 1); 3254 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3255 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3256 softc->dsreg = MTIO_DSREG_RBSY; 3257 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3258 softc->dsreg = MTIO_DSREG_REST; 3259 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3260 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3261 3262 if (error == 0) { 3263 if (loc.flags & SA_RPOS_UNCERTAIN) { 3264 error = EINVAL; /* nothing is certain */ 3265 } else { 3266 *blkptr = scsi_4btoul(loc.firstblk); 3267 } 3268 } 3269 3270 xpt_release_ccb(ccb); 3271 return (error); 3272 } 3273 3274 static int 3275 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3276 { 3277 union ccb *ccb; 3278 struct sa_softc *softc; 3279 int error; 3280 3281 /* 3282 * We used to try and flush any buffered writes here. 3283 * Now we push this onto user applications to either 3284 * flush the pending writes themselves (via a zero count 3285 * WRITE FILEMARKS command) or they can trust their tape 3286 * drive to do this correctly for them. 3287 */ 3288 3289 softc = (struct sa_softc *)periph->softc; 3290 ccb = cam_periph_getccb(periph, 1); 3291 3292 3293 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3294 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3295 3296 3297 softc->dsreg = MTIO_DSREG_POS; 3298 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3299 softc->dsreg = MTIO_DSREG_REST; 3300 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3301 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3302 xpt_release_ccb(ccb); 3303 /* 3304 * Note relative file && block number position as now unknown. 3305 */ 3306 softc->fileno = softc->blkno = (daddr_t) -1; 3307 return (error); 3308 } 3309 3310 static int 3311 saretension(struct cam_periph *periph) 3312 { 3313 union ccb *ccb; 3314 struct sa_softc *softc; 3315 int error; 3316 3317 softc = (struct sa_softc *)periph->softc; 3318 3319 ccb = cam_periph_getccb(periph, 1); 3320 3321 /* It is safe to retry this operation */ 3322 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3323 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3324 3325 softc->dsreg = MTIO_DSREG_TEN; 3326 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3327 softc->dsreg = MTIO_DSREG_REST; 3328 3329 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3330 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3331 xpt_release_ccb(ccb); 3332 if (error == 0) 3333 softc->fileno = softc->blkno = (daddr_t) 0; 3334 else 3335 softc->fileno = softc->blkno = (daddr_t) -1; 3336 return (error); 3337 } 3338 3339 static int 3340 sareservereleaseunit(struct cam_periph *periph, int reserve) 3341 { 3342 union ccb *ccb; 3343 struct sa_softc *softc; 3344 int error; 3345 3346 softc = (struct sa_softc *)periph->softc; 3347 ccb = cam_periph_getccb(periph, 1); 3348 3349 /* It is safe to retry this operation */ 3350 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3351 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3352 softc->dsreg = MTIO_DSREG_RBSY; 3353 error = cam_periph_runccb(ccb, saerror, 0, 3354 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3355 softc->dsreg = MTIO_DSREG_REST; 3356 QFRLS(ccb); 3357 xpt_release_ccb(ccb); 3358 3359 /* 3360 * If the error was Illegal Request, then the device doesn't support 3361 * RESERVE/RELEASE. This is not an error. 3362 */ 3363 if (error == EINVAL) { 3364 error = 0; 3365 } 3366 3367 return (error); 3368 } 3369 3370 static int 3371 saloadunload(struct cam_periph *periph, int load) 3372 { 3373 union ccb *ccb; 3374 struct sa_softc *softc; 3375 int error; 3376 3377 softc = (struct sa_softc *)periph->softc; 3378 3379 ccb = cam_periph_getccb(periph, 1); 3380 3381 /* It is safe to retry this operation */ 3382 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3383 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3384 3385 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3386 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3387 softc->dsreg = MTIO_DSREG_REST; 3388 QFRLS(ccb); 3389 xpt_release_ccb(ccb); 3390 3391 if (error || load == 0) 3392 softc->fileno = softc->blkno = (daddr_t) -1; 3393 else if (error == 0) 3394 softc->fileno = softc->blkno = (daddr_t) 0; 3395 return (error); 3396 } 3397 3398 static int 3399 saerase(struct cam_periph *periph, int longerase) 3400 { 3401 3402 union ccb *ccb; 3403 struct sa_softc *softc; 3404 int error; 3405 3406 softc = (struct sa_softc *)periph->softc; 3407 if (softc->open_rdonly) 3408 return (EBADF); 3409 3410 ccb = cam_periph_getccb(periph, 1); 3411 3412 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3413 SSD_FULL_SIZE, ERASE_TIMEOUT); 3414 3415 softc->dsreg = MTIO_DSREG_ZER; 3416 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3417 softc->dsreg = MTIO_DSREG_REST; 3418 3419 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3420 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3421 xpt_release_ccb(ccb); 3422 return (error); 3423 } 3424 3425 #endif /* _KERNEL */ 3426 3427 /* 3428 * Read tape block limits command. 3429 */ 3430 void 3431 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3432 void (*cbfcnp)(struct cam_periph *, union ccb *), 3433 u_int8_t tag_action, 3434 struct scsi_read_block_limits_data *rlimit_buf, 3435 u_int8_t sense_len, u_int32_t timeout) 3436 { 3437 struct scsi_read_block_limits *scsi_cmd; 3438 3439 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3440 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3441 sizeof(*scsi_cmd), timeout); 3442 3443 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3444 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3445 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3446 } 3447 3448 void 3449 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3450 void (*cbfcnp)(struct cam_periph *, union ccb *), 3451 u_int8_t tag_action, int readop, int sli, 3452 int fixed, u_int32_t length, u_int8_t *data_ptr, 3453 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3454 { 3455 struct scsi_sa_rw *scsi_cmd; 3456 3457 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3458 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3459 scsi_cmd->sli_fixed = 0; 3460 if (sli && readop) 3461 scsi_cmd->sli_fixed |= SAR_SLI; 3462 if (fixed) 3463 scsi_cmd->sli_fixed |= SARW_FIXED; 3464 scsi_ulto3b(length, scsi_cmd->length); 3465 scsi_cmd->control = 0; 3466 3467 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3468 tag_action, data_ptr, dxfer_len, sense_len, 3469 sizeof(*scsi_cmd), timeout); 3470 } 3471 3472 void 3473 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3474 void (*cbfcnp)(struct cam_periph *, union ccb *), 3475 u_int8_t tag_action, int immediate, int eot, 3476 int reten, int load, u_int8_t sense_len, 3477 u_int32_t timeout) 3478 { 3479 struct scsi_load_unload *scsi_cmd; 3480 3481 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3482 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3483 scsi_cmd->opcode = LOAD_UNLOAD; 3484 if (immediate) 3485 scsi_cmd->immediate = SLU_IMMED; 3486 if (eot) 3487 scsi_cmd->eot_reten_load |= SLU_EOT; 3488 if (reten) 3489 scsi_cmd->eot_reten_load |= SLU_RETEN; 3490 if (load) 3491 scsi_cmd->eot_reten_load |= SLU_LOAD; 3492 3493 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3494 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3495 } 3496 3497 void 3498 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3499 void (*cbfcnp)(struct cam_periph *, union ccb *), 3500 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3501 u_int32_t timeout) 3502 { 3503 struct scsi_rewind *scsi_cmd; 3504 3505 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3506 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3507 scsi_cmd->opcode = REWIND; 3508 if (immediate) 3509 scsi_cmd->immediate = SREW_IMMED; 3510 3511 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3512 0, sense_len, sizeof(*scsi_cmd), timeout); 3513 } 3514 3515 void 3516 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3517 void (*cbfcnp)(struct cam_periph *, union ccb *), 3518 u_int8_t tag_action, scsi_space_code code, 3519 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3520 { 3521 struct scsi_space *scsi_cmd; 3522 3523 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3524 scsi_cmd->opcode = SPACE; 3525 scsi_cmd->code = code; 3526 scsi_ulto3b(count, scsi_cmd->count); 3527 scsi_cmd->control = 0; 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 void 3534 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3535 void (*cbfcnp)(struct cam_periph *, union ccb *), 3536 u_int8_t tag_action, int immediate, int setmark, 3537 u_int32_t num_marks, u_int8_t sense_len, 3538 u_int32_t timeout) 3539 { 3540 struct scsi_write_filemarks *scsi_cmd; 3541 3542 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3543 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3544 scsi_cmd->opcode = WRITE_FILEMARKS; 3545 if (immediate) 3546 scsi_cmd->byte2 |= SWFMRK_IMMED; 3547 if (setmark) 3548 scsi_cmd->byte2 |= SWFMRK_WSMK; 3549 3550 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3551 3552 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3553 0, sense_len, sizeof(*scsi_cmd), timeout); 3554 } 3555 3556 /* 3557 * The reserve and release unit commands differ only by their opcodes. 3558 */ 3559 void 3560 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3561 void (*cbfcnp)(struct cam_periph *, union ccb *), 3562 u_int8_t tag_action, int third_party, 3563 int third_party_id, u_int8_t sense_len, 3564 u_int32_t timeout, int reserve) 3565 { 3566 struct scsi_reserve_release_unit *scsi_cmd; 3567 3568 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3569 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3570 3571 if (reserve) 3572 scsi_cmd->opcode = RESERVE_UNIT; 3573 else 3574 scsi_cmd->opcode = RELEASE_UNIT; 3575 3576 if (third_party) { 3577 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3578 scsi_cmd->lun_thirdparty |= 3579 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3580 } 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 void 3587 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3588 void (*cbfcnp)(struct cam_periph *, union ccb *), 3589 u_int8_t tag_action, int immediate, int long_erase, 3590 u_int8_t sense_len, u_int32_t timeout) 3591 { 3592 struct scsi_erase *scsi_cmd; 3593 3594 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3595 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3596 3597 scsi_cmd->opcode = ERASE; 3598 3599 if (immediate) 3600 scsi_cmd->lun_imm_long |= SE_IMMED; 3601 3602 if (long_erase) 3603 scsi_cmd->lun_imm_long |= SE_LONG; 3604 3605 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3606 0, sense_len, sizeof(*scsi_cmd), timeout); 3607 } 3608 3609 /* 3610 * Read Tape Position command. 3611 */ 3612 void 3613 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3614 void (*cbfcnp)(struct cam_periph *, union ccb *), 3615 u_int8_t tag_action, int hardsoft, 3616 struct scsi_tape_position_data *sbp, 3617 u_int8_t sense_len, u_int32_t timeout) 3618 { 3619 struct scsi_tape_read_position *scmd; 3620 3621 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3622 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3623 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3624 bzero(scmd, sizeof(*scmd)); 3625 scmd->opcode = READ_POSITION; 3626 scmd->byte1 = hardsoft; 3627 } 3628 3629 /* 3630 * Set Tape Position command. 3631 */ 3632 void 3633 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3634 void (*cbfcnp)(struct cam_periph *, union ccb *), 3635 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3636 u_int8_t sense_len, u_int32_t timeout) 3637 { 3638 struct scsi_tape_locate *scmd; 3639 3640 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3641 NULL, 0, sense_len, sizeof(*scmd), timeout); 3642 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3643 bzero(scmd, sizeof(*scmd)); 3644 scmd->opcode = LOCATE; 3645 if (hardsoft) 3646 scmd->byte1 |= SA_SPOS_BT; 3647 scsi_ulto4b(blkno, scmd->blkaddr); 3648 } 3649