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sys/cam/scsi/scsi_sa.c
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1 /* 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1999, 2000 Matthew Jacob 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD: releng/5.2/sys/cam/scsi/scsi_sa.c 120019 2003-09-13 02:01:56Z mjacob $"); 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #ifdef _KERNEL 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #endif 38 #include <sys/types.h> 39 #include <sys/time.h> 40 #include <sys/bio.h> 41 #include <sys/limits.h> 42 #include <sys/malloc.h> 43 #include <sys/mtio.h> 44 #ifdef _KERNEL 45 #include <sys/conf.h> 46 #endif 47 #include <sys/devicestat.h> 48 49 #ifndef _KERNEL 50 #include <stdio.h> 51 #include <string.h> 52 #endif 53 54 #include <cam/cam.h> 55 #include <cam/cam_ccb.h> 56 #include <cam/cam_periph.h> 57 #include <cam/cam_xpt_periph.h> 58 #include <cam/cam_debug.h> 59 60 #include <cam/scsi/scsi_all.h> 61 #include <cam/scsi/scsi_message.h> 62 #include <cam/scsi/scsi_sa.h> 63 64 #ifdef _KERNEL 65 66 #include <opt_sa.h> 67 68 #ifndef SA_IO_TIMEOUT 69 #define SA_IO_TIMEOUT 4 70 #endif 71 #ifndef SA_SPACE_TIMEOUT 72 #define SA_SPACE_TIMEOUT 1 * 60 73 #endif 74 #ifndef SA_REWIND_TIMEOUT 75 #define SA_REWIND_TIMEOUT 2 * 60 76 #endif 77 #ifndef SA_ERASE_TIMEOUT 78 #define SA_ERASE_TIMEOUT 4 * 60 79 #endif 80 81 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 82 83 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 84 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 85 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 86 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 87 88 /* 89 * Additional options that can be set for config: SA_1FM_AT_EOT 90 */ 91 92 #ifndef UNUSED_PARAMETER 93 #define UNUSED_PARAMETER(x) x = x 94 #endif 95 96 #define QFRLS(ccb) \ 97 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 98 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 99 100 /* 101 * Driver states 102 */ 103 104 105 typedef enum { 106 SA_STATE_NORMAL, SA_STATE_ABNORMAL 107 } sa_state; 108 109 #define ccb_pflags ppriv_field0 110 #define ccb_bp ppriv_ptr1 111 112 #define SA_CCB_BUFFER_IO 0x0 113 #define SA_CCB_WAITING 0x1 114 #define SA_CCB_TYPEMASK 0x1 115 #define SA_POSITION_UPDATED 0x2 116 117 #define Set_CCB_Type(x, type) \ 118 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 119 x->ccb_h.ccb_pflags |= type 120 121 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 122 123 124 125 typedef enum { 126 SA_FLAG_OPEN = 0x0001, 127 SA_FLAG_FIXED = 0x0002, 128 SA_FLAG_TAPE_LOCKED = 0x0004, 129 SA_FLAG_TAPE_MOUNTED = 0x0008, 130 SA_FLAG_TAPE_WP = 0x0010, 131 SA_FLAG_TAPE_WRITTEN = 0x0020, 132 SA_FLAG_EOM_PENDING = 0x0040, 133 SA_FLAG_EIO_PENDING = 0x0080, 134 SA_FLAG_EOF_PENDING = 0x0100, 135 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 136 SA_FLAG_EOF_PENDING), 137 SA_FLAG_INVALID = 0x0200, 138 SA_FLAG_COMP_ENABLED = 0x0400, 139 SA_FLAG_COMP_SUPP = 0x0800, 140 SA_FLAG_COMP_UNSUPP = 0x1000, 141 SA_FLAG_TAPE_FROZEN = 0x2000 142 } sa_flags; 143 144 typedef enum { 145 SA_MODE_REWIND = 0x00, 146 SA_MODE_NOREWIND = 0x01, 147 SA_MODE_OFFLINE = 0x02 148 } sa_mode; 149 150 typedef enum { 151 SA_PARAM_NONE = 0x00, 152 SA_PARAM_BLOCKSIZE = 0x01, 153 SA_PARAM_DENSITY = 0x02, 154 SA_PARAM_COMPRESSION = 0x04, 155 SA_PARAM_BUFF_MODE = 0x08, 156 SA_PARAM_NUMBLOCKS = 0x10, 157 SA_PARAM_WP = 0x20, 158 SA_PARAM_SPEED = 0x40, 159 SA_PARAM_ALL = 0x7f 160 } sa_params; 161 162 typedef enum { 163 SA_QUIRK_NONE = 0x00, 164 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 165 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 166 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 167 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 168 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 169 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 170 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 171 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 172 } sa_quirks; 173 174 /* units are bits 4-7, 16-21 (1024 units) */ 175 #define SAUNIT(DEV) \ 176 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 177 178 #define SAMODE(z) ((minor(z) & 0x3)) 179 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 180 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 181 182 #define SA_NOT_CTLDEV 0 183 #define SA_CTLDEV 1 184 185 #define SA_ATYPE_R 0 186 #define SA_ATYPE_NR 1 187 #define SA_ATYPE_ER 2 188 189 #define SAMINOR(ctl, unit, mode, access) \ 190 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 191 (mode << 0x2) | (access & 0x3)) 192 193 #define SA_NUM_MODES 4 194 struct sa_devs { 195 dev_t ctl_dev; 196 struct sa_mode_devs { 197 dev_t r_dev; 198 dev_t nr_dev; 199 dev_t er_dev; 200 } mode_devs[SA_NUM_MODES]; 201 }; 202 203 struct sa_softc { 204 sa_state state; 205 sa_flags flags; 206 sa_quirks quirks; 207 struct bio_queue_head bio_queue; 208 int queue_count; 209 struct devstat *device_stats; 210 struct sa_devs devs; 211 int blk_gran; 212 int blk_mask; 213 int blk_shift; 214 u_int32_t max_blk; 215 u_int32_t min_blk; 216 u_int32_t comp_algorithm; 217 u_int32_t saved_comp_algorithm; 218 u_int32_t media_blksize; 219 u_int32_t last_media_blksize; 220 u_int32_t media_numblks; 221 u_int8_t media_density; 222 u_int8_t speed; 223 u_int8_t scsi_rev; 224 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 225 int buffer_mode; 226 int filemarks; 227 union ccb saved_ccb; 228 int last_resid_was_io; 229 230 /* 231 * Relative to BOT Location. 232 */ 233 daddr_t fileno; 234 daddr_t blkno; 235 236 /* 237 * Latched Error Info 238 */ 239 struct { 240 struct scsi_sense_data _last_io_sense; 241 u_int32_t _last_io_resid; 242 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 243 struct scsi_sense_data _last_ctl_sense; 244 u_int32_t _last_ctl_resid; 245 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 246 #define last_io_sense errinfo._last_io_sense 247 #define last_io_resid errinfo._last_io_resid 248 #define last_io_cdb errinfo._last_io_cdb 249 #define last_ctl_sense errinfo._last_ctl_sense 250 #define last_ctl_resid errinfo._last_ctl_resid 251 #define last_ctl_cdb errinfo._last_ctl_cdb 252 } errinfo; 253 /* 254 * Misc other flags/state 255 */ 256 u_int32_t 257 : 31, 258 ctrl_mode : 1; /* control device open */ 259 }; 260 261 struct sa_quirk_entry { 262 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 263 sa_quirks quirks; /* specific quirk type */ 264 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 265 }; 266 267 static struct sa_quirk_entry sa_quirk_table[] = 268 { 269 { 270 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 271 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 272 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 273 }, 274 { 275 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 276 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 277 }, 278 { 279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 280 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 284 "Python*", "*"}, SA_QUIRK_NODREAD, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "VIPER 2525 25462", "-011"}, 293 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 294 }, 295 { 296 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 297 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 298 }, 299 #if 0 300 { 301 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 302 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 303 }, 304 #endif 305 { 306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 307 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 308 }, 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 311 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 312 }, 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 315 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 319 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 323 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 324 }, 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 327 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { /* jreynold@primenet.com */ 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 331 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 332 }, 333 { /* mike@sentex.net */ 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 335 "STT20000*", "*"}, SA_QUIRK_1FM, 0 336 }, 337 { 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 339 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 343 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 347 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 351 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 355 " SLR*", "*"}, SA_QUIRK_1FM, 0 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 359 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 363 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 364 } 365 }; 366 367 static d_open_t saopen; 368 static d_close_t saclose; 369 static d_strategy_t sastrategy; 370 static d_ioctl_t saioctl; 371 static periph_init_t sainit; 372 static periph_ctor_t saregister; 373 static periph_oninv_t saoninvalidate; 374 static periph_dtor_t sacleanup; 375 static periph_start_t sastart; 376 static void saasync(void *callback_arg, u_int32_t code, 377 struct cam_path *path, void *arg); 378 static void sadone(struct cam_periph *periph, 379 union ccb *start_ccb); 380 static int saerror(union ccb *ccb, u_int32_t cam_flags, 381 u_int32_t sense_flags); 382 static int samarkswanted(struct cam_periph *); 383 static int sacheckeod(struct cam_periph *periph); 384 static int sagetparams(struct cam_periph *periph, 385 sa_params params_to_get, 386 u_int32_t *blocksize, u_int8_t *density, 387 u_int32_t *numblocks, int *buff_mode, 388 u_int8_t *write_protect, u_int8_t *speed, 389 int *comp_supported, int *comp_enabled, 390 u_int32_t *comp_algorithm, 391 sa_comp_t *comp_page); 392 static int sasetparams(struct cam_periph *periph, 393 sa_params params_to_set, 394 u_int32_t blocksize, u_int8_t density, 395 u_int32_t comp_algorithm, 396 u_int32_t sense_flags); 397 static void saprevent(struct cam_periph *periph, int action); 398 static int sarewind(struct cam_periph *periph); 399 static int saspace(struct cam_periph *periph, int count, 400 scsi_space_code code); 401 static int samount(struct cam_periph *, int, dev_t); 402 static int saretension(struct cam_periph *periph); 403 static int sareservereleaseunit(struct cam_periph *periph, 404 int reserve); 405 static int saloadunload(struct cam_periph *periph, int load); 406 static int saerase(struct cam_periph *periph, int longerase); 407 static int sawritefilemarks(struct cam_periph *periph, 408 int nmarks, int setmarks); 409 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 410 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 411 412 413 static struct periph_driver sadriver = 414 { 415 sainit, "sa", 416 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 417 }; 418 419 PERIPHDRIVER_DECLARE(sa, sadriver); 420 421 /* For 2.2-stable support */ 422 #ifndef D_TAPE 423 #define D_TAPE 0 424 #endif 425 426 #define SA_CDEV_MAJOR 14 427 428 static struct cdevsw sa_cdevsw = { 429 .d_open = saopen, 430 .d_close = saclose, 431 .d_read = physread, 432 .d_write = physwrite, 433 .d_ioctl = saioctl, 434 .d_strategy = sastrategy, 435 .d_name = "sa", 436 .d_maj = SA_CDEV_MAJOR, 437 .d_flags = D_TAPE, 438 }; 439 440 static int 441 saopen(dev_t dev, int flags, int fmt, struct thread *td) 442 { 443 struct cam_periph *periph; 444 struct sa_softc *softc; 445 int unit; 446 int error; 447 int s; 448 449 unit = SAUNIT(dev); 450 451 s = splsoftcam(); 452 periph = (struct cam_periph *)dev->si_drv1; 453 if (periph == NULL) { 454 (void) splx(s); 455 return (ENXIO); 456 } 457 softc = (struct sa_softc *)periph->softc; 458 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 459 splx(s); 460 return (error); 461 } 462 splx(s); 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 (cam_periph_acquire(periph) != CAM_REQ_CMP) { 468 cam_periph_unlock(periph); 469 return (ENXIO); 470 } 471 if (SA_IS_CTRL(dev)) { 472 softc->ctrl_mode = 1; 473 cam_periph_unlock(periph); 474 return (0); 475 } 476 477 478 if (softc->flags & SA_FLAG_OPEN) { 479 error = EBUSY; 480 } else if (softc->flags & SA_FLAG_INVALID) { 481 error = ENXIO; 482 } else { 483 /* 484 * The function samount ensures media is loaded and ready. 485 * It also does a device RESERVE if the tape isn't yet mounted. 486 */ 487 error = samount(periph, flags, dev); 488 } 489 490 if (error) { 491 cam_periph_release(periph); 492 } else { 493 saprevent(periph, PR_PREVENT); 494 softc->flags |= SA_FLAG_OPEN; 495 } 496 cam_periph_unlock(periph); 497 return (error); 498 } 499 500 static int 501 saclose(dev_t dev, int flag, int fmt, struct thread *td) 502 { 503 struct cam_periph *periph; 504 struct sa_softc *softc; 505 int unit, mode, error, writing, tmp; 506 int closedbits = SA_FLAG_OPEN; 507 508 unit = SAUNIT(dev); 509 mode = SAMODE(dev); 510 periph = (struct cam_periph *)dev->si_drv1; 511 if (periph == NULL) 512 return (ENXIO); 513 514 softc = (struct sa_softc *)periph->softc; 515 516 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 517 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 518 519 520 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 521 return (error); 522 } 523 524 if (SA_IS_CTRL(dev)) { 525 softc->ctrl_mode = 0; 526 cam_periph_release(periph); 527 cam_periph_unlock(periph); 528 return (0); 529 } 530 531 /* 532 * Were we writing the tape? 533 */ 534 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 535 536 /* 537 * See whether or not we need to write filemarks. If this 538 * fails, we probably have to assume we've lost tape 539 * position. 540 */ 541 error = sacheckeod(periph); 542 if (error) { 543 xpt_print_path(periph->path); 544 printf("failed to write terminating filemark(s)\n"); 545 softc->flags |= SA_FLAG_TAPE_FROZEN; 546 } 547 548 /* 549 * Whatever we end up doing, allow users to eject tapes from here on. 550 */ 551 saprevent(periph, PR_ALLOW); 552 553 /* 554 * Decide how to end... 555 */ 556 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 557 closedbits |= SA_FLAG_TAPE_FROZEN; 558 } else switch (mode) { 559 case SA_MODE_OFFLINE: 560 /* 561 * An 'offline' close is an unconditional release of 562 * frozen && mount conditions, irrespective of whether 563 * these operations succeeded. The reason for this is 564 * to allow at least some kind of programmatic way 565 * around our state getting all fouled up. If somebody 566 * issues an 'offline' command, that will be allowed 567 * to clear state. 568 */ 569 (void) sarewind(periph); 570 (void) saloadunload(periph, FALSE); 571 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 572 break; 573 case SA_MODE_REWIND: 574 /* 575 * If the rewind fails, return an error- if anyone cares, 576 * but not overwriting any previous error. 577 * 578 * We don't clear the notion of mounted here, but we do 579 * clear the notion of frozen if we successfully rewound. 580 */ 581 tmp = sarewind(periph); 582 if (tmp) { 583 if (error != 0) 584 error = tmp; 585 } else { 586 closedbits |= SA_FLAG_TAPE_FROZEN; 587 } 588 break; 589 case SA_MODE_NOREWIND: 590 /* 591 * If we're not rewinding/unloading the tape, find out 592 * whether we need to back up over one of two filemarks 593 * we wrote (if we wrote two filemarks) so that appends 594 * from this point on will be sane. 595 */ 596 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 597 tmp = saspace(periph, -1, SS_FILEMARKS); 598 if (tmp) { 599 xpt_print_path(periph->path); 600 printf("unable to backspace over one of double" 601 " filemarks at end of tape\n"); 602 xpt_print_path(periph->path); 603 printf("it is possible that this device" 604 " needs a SA_QUIRK_1FM quirk set for it\n"); 605 softc->flags |= SA_FLAG_TAPE_FROZEN; 606 } 607 } 608 break; 609 default: 610 xpt_print_path(periph->path); 611 panic("unknown mode 0x%x in saclose", mode); 612 /* NOTREACHED */ 613 break; 614 } 615 616 /* 617 * We wish to note here that there are no more filemarks to be written. 618 */ 619 softc->filemarks = 0; 620 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 621 622 /* 623 * And we are no longer open for business. 624 */ 625 softc->flags &= ~closedbits; 626 627 /* 628 * Inform users if tape state if frozen.... 629 */ 630 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 631 xpt_print_path(periph->path); 632 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 633 "command to clear this state.\n"); 634 } 635 636 /* release the device if it is no longer mounted */ 637 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 638 sareservereleaseunit(periph, FALSE); 639 640 cam_periph_unlock(periph); 641 cam_periph_release(periph); 642 643 return (error); 644 } 645 646 /* 647 * Actually translate the requested transfer into one the physical driver 648 * can understand. The transfer is described by a buf and will include 649 * only one physical transfer. 650 */ 651 static void 652 sastrategy(struct bio *bp) 653 { 654 struct cam_periph *periph; 655 struct sa_softc *softc; 656 int s; 657 658 bp->bio_resid = bp->bio_bcount; 659 if (SA_IS_CTRL(bp->bio_dev)) { 660 biofinish(bp, NULL, EINVAL); 661 return; 662 } 663 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 664 if (periph == NULL) { 665 biofinish(bp, NULL, ENXIO); 666 return; 667 } 668 softc = (struct sa_softc *)periph->softc; 669 670 s = splsoftcam(); 671 672 if (softc->flags & SA_FLAG_INVALID) { 673 splx(s); 674 biofinish(bp, NULL, ENXIO); 675 return; 676 } 677 678 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 679 splx(s); 680 biofinish(bp, NULL, EPERM); 681 return; 682 } 683 684 splx(s); 685 686 /* 687 * If it's a null transfer, return immediatly 688 */ 689 if (bp->bio_bcount == 0) { 690 biodone(bp); 691 return; 692 } 693 694 /* valid request? */ 695 if (softc->flags & SA_FLAG_FIXED) { 696 /* 697 * Fixed block device. The byte count must 698 * be a multiple of our block size. 699 */ 700 if (((softc->blk_mask != ~0) && 701 ((bp->bio_bcount & softc->blk_mask) != 0)) || 702 ((softc->blk_mask == ~0) && 703 ((bp->bio_bcount % softc->min_blk) != 0))) { 704 xpt_print_path(periph->path); 705 printf("Invalid request. Fixed block device " 706 "requests must be a multiple " 707 "of %d bytes\n", softc->min_blk); 708 biofinish(bp, NULL, EINVAL); 709 return; 710 } 711 } else if ((bp->bio_bcount > softc->max_blk) || 712 (bp->bio_bcount < softc->min_blk) || 713 (bp->bio_bcount & softc->blk_mask) != 0) { 714 715 xpt_print_path(periph->path); 716 printf("Invalid request. Variable block device " 717 "requests must be "); 718 if (softc->blk_mask != 0) { 719 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 720 } 721 printf("between %d and %d bytes\n", softc->min_blk, 722 softc->max_blk); 723 biofinish(bp, NULL, EINVAL); 724 return; 725 } 726 727 /* 728 * Mask interrupts so that the device cannot be invalidated until 729 * after we are in the queue. Otherwise, we might not properly 730 * clean up one of the buffers. 731 */ 732 s = splbio(); 733 734 /* 735 * Place it at the end of the queue. 736 */ 737 bioq_insert_tail(&softc->bio_queue, bp); 738 softc->queue_count++; 739 #if 0 740 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 741 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 742 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 743 (bp->bio_cmd == BIO_READ)? "read" : "write")); 744 #endif 745 if (softc->queue_count > 1) { 746 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 747 ("sastrategy: queue count now %d\n", softc->queue_count)); 748 } 749 splx(s); 750 751 /* 752 * Schedule ourselves for performing the work. 753 */ 754 xpt_schedule(periph, 1); 755 756 return; 757 } 758 759 static int 760 saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 761 { 762 struct cam_periph *periph; 763 struct sa_softc *softc; 764 scsi_space_code spaceop; 765 int didlockperiph = 0; 766 int s; 767 int mode; 768 int error = 0; 769 770 mode = SAMODE(dev); 771 error = 0; /* shut up gcc */ 772 spaceop = 0; /* shut up gcc */ 773 774 periph = (struct cam_periph *)dev->si_drv1; 775 if (periph == NULL) 776 return (ENXIO); 777 778 softc = (struct sa_softc *)periph->softc; 779 780 /* 781 * Check for control mode accesses. We allow MTIOCGET and 782 * MTIOCERRSTAT (but need to be the only one open in order 783 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 784 * and MTCOMP (but need to be the only one accessing this 785 * device to run those). 786 */ 787 788 if (SA_IS_CTRL(dev)) { 789 switch (cmd) { 790 case MTIOCGETEOTMODEL: 791 case MTIOCGET: 792 break; 793 case MTIOCERRSTAT: 794 /* 795 * If the periph isn't already locked, lock it 796 * so our MTIOCERRSTAT can reset latched error stats. 797 * 798 * If the periph is already locked, skip it because 799 * we're just getting status and it'll be up to the 800 * other thread that has this device open to do 801 * an MTIOCERRSTAT that would clear latched status. 802 */ 803 s = splsoftcam(); 804 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 805 error = cam_periph_lock(periph, PRIBIO|PCATCH); 806 if (error != 0) { 807 splx(s); 808 return (error); 809 } 810 didlockperiph = 1; 811 } 812 break; 813 814 case MTIOCSETEOTMODEL: 815 case MTSETBSIZ: 816 case MTSETDNSTY: 817 case MTCOMP: 818 /* 819 * We need to acquire the peripheral here rather 820 * than at open time because we are sharing writable 821 * access to data structures. 822 */ 823 s = splsoftcam(); 824 error = cam_periph_lock(periph, PRIBIO|PCATCH); 825 if (error != 0) { 826 splx(s); 827 return (error); 828 } 829 didlockperiph = 1; 830 break; 831 832 default: 833 return (EINVAL); 834 } 835 } 836 837 /* 838 * Find the device that the user is talking about 839 */ 840 switch (cmd) { 841 case MTIOCGET: 842 { 843 struct mtget *g = (struct mtget *)arg; 844 845 /* 846 * If this isn't the control mode device, actually go out 847 * and ask the drive again what it's set to. 848 */ 849 if (!SA_IS_CTRL(dev)) { 850 u_int8_t write_protect; 851 int comp_enabled, comp_supported; 852 error = sagetparams(periph, SA_PARAM_ALL, 853 &softc->media_blksize, &softc->media_density, 854 &softc->media_numblks, &softc->buffer_mode, 855 &write_protect, &softc->speed, &comp_supported, 856 &comp_enabled, &softc->comp_algorithm, NULL); 857 if (error) 858 break; 859 if (write_protect) 860 softc->flags |= SA_FLAG_TAPE_WP; 861 else 862 softc->flags &= ~SA_FLAG_TAPE_WP; 863 softc->flags &= ~(SA_FLAG_COMP_SUPP| 864 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 865 if (comp_supported) { 866 if (softc->saved_comp_algorithm == 0) 867 softc->saved_comp_algorithm = 868 softc->comp_algorithm; 869 softc->flags |= SA_FLAG_COMP_SUPP; 870 if (comp_enabled) 871 softc->flags |= SA_FLAG_COMP_ENABLED; 872 } else 873 softc->flags |= SA_FLAG_COMP_UNSUPP; 874 } 875 bzero(g, sizeof(struct mtget)); 876 g->mt_type = MT_ISAR; 877 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 878 g->mt_comp = MT_COMP_UNSUPP; 879 g->mt_comp0 = MT_COMP_UNSUPP; 880 g->mt_comp1 = MT_COMP_UNSUPP; 881 g->mt_comp2 = MT_COMP_UNSUPP; 882 g->mt_comp3 = MT_COMP_UNSUPP; 883 } else { 884 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 885 g->mt_comp = MT_COMP_DISABLED; 886 } else { 887 g->mt_comp = softc->comp_algorithm; 888 } 889 g->mt_comp0 = softc->comp_algorithm; 890 g->mt_comp1 = softc->comp_algorithm; 891 g->mt_comp2 = softc->comp_algorithm; 892 g->mt_comp3 = softc->comp_algorithm; 893 } 894 g->mt_density = softc->media_density; 895 g->mt_density0 = softc->media_density; 896 g->mt_density1 = softc->media_density; 897 g->mt_density2 = softc->media_density; 898 g->mt_density3 = softc->media_density; 899 g->mt_blksiz = softc->media_blksize; 900 g->mt_blksiz0 = softc->media_blksize; 901 g->mt_blksiz1 = softc->media_blksize; 902 g->mt_blksiz2 = softc->media_blksize; 903 g->mt_blksiz3 = softc->media_blksize; 904 g->mt_fileno = softc->fileno; 905 g->mt_blkno = softc->blkno; 906 g->mt_dsreg = (short) softc->dsreg; 907 /* 908 * Yes, we know that this is likely to overflow 909 */ 910 if (softc->last_resid_was_io) { 911 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 912 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 913 softc->last_io_resid = 0; 914 } 915 } 916 } else { 917 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 918 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 919 softc->last_ctl_resid = 0; 920 } 921 } 922 } 923 error = 0; 924 break; 925 } 926 case MTIOCERRSTAT: 927 { 928 struct scsi_tape_errors *sep = 929 &((union mterrstat *)arg)->scsi_errstat; 930 931 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 932 ("saioctl: MTIOCERRSTAT\n")); 933 934 bzero(sep, sizeof(*sep)); 935 sep->io_resid = softc->last_io_resid; 936 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 937 sizeof (sep->io_sense)); 938 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 939 sizeof (sep->io_cdb)); 940 sep->ctl_resid = softc->last_ctl_resid; 941 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 942 sizeof (sep->ctl_sense)); 943 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 944 sizeof (sep->ctl_cdb)); 945 946 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 947 bzero((caddr_t) &softc->errinfo, 948 sizeof (softc->errinfo)); 949 error = 0; 950 break; 951 } 952 case MTIOCTOP: 953 { 954 struct mtop *mt; 955 int count; 956 957 mt = (struct mtop *)arg; 958 959 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 960 ("saioctl: op=0x%x count=0x%x\n", 961 mt->mt_op, mt->mt_count)); 962 963 count = mt->mt_count; 964 switch (mt->mt_op) { 965 case MTWEOF: /* write an end-of-file marker */ 966 /* 967 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 968 * flag because by keeping track of filemarks 969 * we have last written we know ehether or not 970 * we need to write more when we close the device. 971 */ 972 error = sawritefilemarks(periph, count, FALSE); 973 break; 974 case MTWSS: /* write a setmark */ 975 error = sawritefilemarks(periph, count, TRUE); 976 break; 977 case MTBSR: /* backward space record */ 978 case MTFSR: /* forward space record */ 979 case MTBSF: /* backward space file */ 980 case MTFSF: /* forward space file */ 981 case MTBSS: /* backward space setmark */ 982 case MTFSS: /* forward space setmark */ 983 case MTEOD: /* space to end of recorded medium */ 984 { 985 int nmarks; 986 987 spaceop = SS_FILEMARKS; 988 nmarks = softc->filemarks; 989 error = sacheckeod(periph); 990 if (error) { 991 xpt_print_path(periph->path); 992 printf("EOD check prior to spacing failed\n"); 993 softc->flags |= SA_FLAG_EIO_PENDING; 994 break; 995 } 996 nmarks -= softc->filemarks; 997 switch(mt->mt_op) { 998 case MTBSR: 999 count = -count; 1000 /* FALLTHROUGH */ 1001 case MTFSR: 1002 spaceop = SS_BLOCKS; 1003 break; 1004 case MTBSF: 1005 count = -count; 1006 /* FALLTHROUGH */ 1007 case MTFSF: 1008 break; 1009 case MTBSS: 1010 count = -count; 1011 /* FALLTHROUGH */ 1012 case MTFSS: 1013 spaceop = SS_SETMARKS; 1014 break; 1015 case MTEOD: 1016 spaceop = SS_EOD; 1017 count = 0; 1018 nmarks = 0; 1019 break; 1020 default: 1021 error = EINVAL; 1022 break; 1023 } 1024 if (error) 1025 break; 1026 1027 nmarks = softc->filemarks; 1028 /* 1029 * XXX: Why are we checking again? 1030 */ 1031 error = sacheckeod(periph); 1032 if (error) 1033 break; 1034 nmarks -= softc->filemarks; 1035 error = saspace(periph, count - nmarks, spaceop); 1036 /* 1037 * At this point, clear that we've written the tape 1038 * and that we've written any filemarks. We really 1039 * don't know what the applications wishes to do next- 1040 * the sacheckeod's will make sure we terminated the 1041 * tape correctly if we'd been writing, but the next 1042 * action the user application takes will set again 1043 * whether we need to write filemarks. 1044 */ 1045 softc->flags &= 1046 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1047 softc->filemarks = 0; 1048 break; 1049 } 1050 case MTREW: /* rewind */ 1051 (void) sacheckeod(periph); 1052 error = sarewind(periph); 1053 /* see above */ 1054 softc->flags &= 1055 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1056 softc->flags &= ~SA_FLAG_ERR_PENDING; 1057 softc->filemarks = 0; 1058 break; 1059 case MTERASE: /* erase */ 1060 error = saerase(periph, count); 1061 softc->flags &= 1062 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1063 softc->flags &= ~SA_FLAG_ERR_PENDING; 1064 break; 1065 case MTRETENS: /* re-tension tape */ 1066 error = saretension(periph); 1067 softc->flags &= 1068 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1069 softc->flags &= ~SA_FLAG_ERR_PENDING; 1070 break; 1071 case MTOFFL: /* rewind and put the drive offline */ 1072 1073 (void) sacheckeod(periph); 1074 /* see above */ 1075 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1076 softc->filemarks = 0; 1077 1078 error = sarewind(periph); 1079 /* clear the frozen flag anyway */ 1080 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1081 1082 /* 1083 * Be sure to allow media removal before ejecting. 1084 */ 1085 1086 saprevent(periph, PR_ALLOW); 1087 if (error == 0) { 1088 error = saloadunload(periph, FALSE); 1089 if (error == 0) { 1090 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1091 } 1092 } 1093 break; 1094 1095 case MTNOP: /* no operation, sets status only */ 1096 case MTCACHE: /* enable controller cache */ 1097 case MTNOCACHE: /* disable controller cache */ 1098 error = 0; 1099 break; 1100 1101 case MTSETBSIZ: /* Set block size for device */ 1102 1103 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1104 0, 0, 0); 1105 if (error == 0) { 1106 softc->last_media_blksize = 1107 softc->media_blksize; 1108 softc->media_blksize = count; 1109 if (count) { 1110 softc->flags |= SA_FLAG_FIXED; 1111 if (powerof2(count)) { 1112 softc->blk_shift = 1113 ffs(count) - 1; 1114 softc->blk_mask = count - 1; 1115 } else { 1116 softc->blk_mask = ~0; 1117 softc->blk_shift = 0; 1118 } 1119 /* 1120 * Make the user's desire 'persistent'. 1121 */ 1122 softc->quirks &= ~SA_QUIRK_VARIABLE; 1123 softc->quirks |= SA_QUIRK_FIXED; 1124 } else { 1125 softc->flags &= ~SA_FLAG_FIXED; 1126 if (softc->max_blk == 0) { 1127 softc->max_blk = ~0; 1128 } 1129 softc->blk_shift = 0; 1130 if (softc->blk_gran != 0) { 1131 softc->blk_mask = 1132 softc->blk_gran - 1; 1133 } else { 1134 softc->blk_mask = 0; 1135 } 1136 /* 1137 * Make the user's desire 'persistent'. 1138 */ 1139 softc->quirks |= SA_QUIRK_VARIABLE; 1140 softc->quirks &= ~SA_QUIRK_FIXED; 1141 } 1142 } 1143 break; 1144 case MTSETDNSTY: /* Set density for device and mode */ 1145 if (count > UCHAR_MAX) { 1146 error = EINVAL; 1147 break; 1148 } else { 1149 error = sasetparams(periph, SA_PARAM_DENSITY, 1150 0, count, 0, 0); 1151 } 1152 break; 1153 case MTCOMP: /* enable compression */ 1154 /* 1155 * Some devices don't support compression, and 1156 * don't like it if you ask them for the 1157 * compression page. 1158 */ 1159 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1160 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1161 error = ENODEV; 1162 break; 1163 } 1164 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1165 0, 0, count, SF_NO_PRINT); 1166 break; 1167 default: 1168 error = EINVAL; 1169 } 1170 break; 1171 } 1172 case MTIOCIEOT: 1173 case MTIOCEEOT: 1174 error = 0; 1175 break; 1176 case MTIOCRDSPOS: 1177 error = sardpos(periph, 0, (u_int32_t *) arg); 1178 break; 1179 case MTIOCRDHPOS: 1180 error = sardpos(periph, 1, (u_int32_t *) arg); 1181 break; 1182 case MTIOCSLOCATE: 1183 error = sasetpos(periph, 0, (u_int32_t *) arg); 1184 break; 1185 case MTIOCHLOCATE: 1186 error = sasetpos(periph, 1, (u_int32_t *) arg); 1187 break; 1188 case MTIOCGETEOTMODEL: 1189 error = 0; 1190 if (softc->quirks & SA_QUIRK_1FM) 1191 mode = 1; 1192 else 1193 mode = 2; 1194 *((u_int32_t *) arg) = mode; 1195 break; 1196 case MTIOCSETEOTMODEL: 1197 error = 0; 1198 switch (*((u_int32_t *) arg)) { 1199 case 1: 1200 softc->quirks &= ~SA_QUIRK_2FM; 1201 softc->quirks |= SA_QUIRK_1FM; 1202 break; 1203 case 2: 1204 softc->quirks &= ~SA_QUIRK_1FM; 1205 softc->quirks |= SA_QUIRK_2FM; 1206 break; 1207 default: 1208 error = EINVAL; 1209 break; 1210 } 1211 break; 1212 default: 1213 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1214 break; 1215 } 1216 1217 /* 1218 * Check to see if we cleared a frozen state 1219 */ 1220 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1221 switch(cmd) { 1222 case MTIOCRDSPOS: 1223 case MTIOCRDHPOS: 1224 case MTIOCSLOCATE: 1225 case MTIOCHLOCATE: 1226 softc->fileno = (daddr_t) -1; 1227 softc->blkno = (daddr_t) -1; 1228 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1229 xpt_print_path(periph->path); 1230 printf("tape state now unfrozen.\n"); 1231 break; 1232 default: 1233 break; 1234 } 1235 } 1236 if (didlockperiph) { 1237 cam_periph_unlock(periph); 1238 } 1239 return (error); 1240 } 1241 1242 static void 1243 sainit(void) 1244 { 1245 cam_status status; 1246 struct cam_path *path; 1247 1248 /* 1249 * Install a global async callback. 1250 */ 1251 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1252 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1253 1254 if (status == CAM_REQ_CMP) { 1255 /* Register the async callbacks of interrest */ 1256 struct ccb_setasync csa; /* 1257 * This is an immediate CCB, 1258 * so using the stack is OK 1259 */ 1260 xpt_setup_ccb(&csa.ccb_h, path, 5); 1261 csa.ccb_h.func_code = XPT_SASYNC_CB; 1262 csa.event_enable = AC_FOUND_DEVICE; 1263 csa.callback = saasync; 1264 csa.callback_arg = NULL; 1265 xpt_action((union ccb *)&csa); 1266 status = csa.ccb_h.status; 1267 xpt_free_path(path); 1268 } 1269 1270 if (status != CAM_REQ_CMP) { 1271 printf("sa: Failed to attach master async callback " 1272 "due to status 0x%x!\n", status); 1273 } 1274 } 1275 1276 static void 1277 saoninvalidate(struct cam_periph *periph) 1278 { 1279 struct sa_softc *softc; 1280 struct ccb_setasync csa; 1281 int s; 1282 1283 softc = (struct sa_softc *)periph->softc; 1284 1285 /* 1286 * De-register any async callbacks. 1287 */ 1288 xpt_setup_ccb(&csa.ccb_h, periph->path, 1289 /* priority */ 5); 1290 csa.ccb_h.func_code = XPT_SASYNC_CB; 1291 csa.event_enable = 0; 1292 csa.callback = saasync; 1293 csa.callback_arg = periph; 1294 xpt_action((union ccb *)&csa); 1295 1296 softc->flags |= SA_FLAG_INVALID; 1297 1298 /* 1299 * Although the oninvalidate() routines are always called at 1300 * splsoftcam, we need to be at splbio() here to keep the buffer 1301 * queue from being modified while we traverse it. 1302 */ 1303 s = splbio(); 1304 1305 /* 1306 * Return all queued I/O with ENXIO. 1307 * XXX Handle any transactions queued to the card 1308 * with XPT_ABORT_CCB. 1309 */ 1310 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1311 softc->queue_count = 0; 1312 splx(s); 1313 1314 xpt_print_path(periph->path); 1315 printf("lost device\n"); 1316 1317 } 1318 1319 static void 1320 sacleanup(struct cam_periph *periph) 1321 { 1322 struct sa_softc *softc; 1323 int i; 1324 1325 softc = (struct sa_softc *)periph->softc; 1326 1327 devstat_remove_entry(softc->device_stats); 1328 1329 destroy_dev(softc->devs.ctl_dev); 1330 1331 for (i = 0; i < SA_NUM_MODES; i++) { 1332 destroy_dev(softc->devs.mode_devs[i].r_dev); 1333 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1334 destroy_dev(softc->devs.mode_devs[i].er_dev); 1335 } 1336 1337 xpt_print_path(periph->path); 1338 printf("removing device entry\n"); 1339 free(softc, M_DEVBUF); 1340 } 1341 1342 static void 1343 saasync(void *callback_arg, u_int32_t code, 1344 struct cam_path *path, void *arg) 1345 { 1346 struct cam_periph *periph; 1347 1348 periph = (struct cam_periph *)callback_arg; 1349 switch (code) { 1350 case AC_FOUND_DEVICE: 1351 { 1352 struct ccb_getdev *cgd; 1353 cam_status status; 1354 1355 cgd = (struct ccb_getdev *)arg; 1356 if (cgd == NULL) 1357 break; 1358 1359 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1360 break; 1361 1362 /* 1363 * Allocate a peripheral instance for 1364 * this device and start the probe 1365 * process. 1366 */ 1367 status = cam_periph_alloc(saregister, saoninvalidate, 1368 sacleanup, sastart, 1369 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1370 saasync, AC_FOUND_DEVICE, cgd); 1371 1372 if (status != CAM_REQ_CMP 1373 && status != CAM_REQ_INPROG) 1374 printf("saasync: Unable to probe new device " 1375 "due to status 0x%x\n", status); 1376 break; 1377 } 1378 default: 1379 cam_periph_async(periph, code, path, arg); 1380 break; 1381 } 1382 } 1383 1384 static cam_status 1385 saregister(struct cam_periph *periph, void *arg) 1386 { 1387 struct sa_softc *softc; 1388 struct ccb_setasync csa; 1389 struct ccb_getdev *cgd; 1390 caddr_t match; 1391 int i; 1392 1393 cgd = (struct ccb_getdev *)arg; 1394 if (periph == NULL) { 1395 printf("saregister: periph was NULL!!\n"); 1396 return (CAM_REQ_CMP_ERR); 1397 } 1398 1399 if (cgd == NULL) { 1400 printf("saregister: no getdev CCB, can't register device\n"); 1401 return (CAM_REQ_CMP_ERR); 1402 } 1403 1404 softc = (struct sa_softc *) 1405 malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT | M_ZERO); 1406 if (softc == NULL) { 1407 printf("saregister: Unable to probe new device. " 1408 "Unable to allocate softc\n"); 1409 return (CAM_REQ_CMP_ERR); 1410 } 1411 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1412 softc->state = SA_STATE_NORMAL; 1413 softc->fileno = (daddr_t) -1; 1414 softc->blkno = (daddr_t) -1; 1415 1416 bioq_init(&softc->bio_queue); 1417 periph->softc = softc; 1418 1419 /* 1420 * See if this device has any quirks. 1421 */ 1422 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1423 (caddr_t)sa_quirk_table, 1424 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1425 sizeof(*sa_quirk_table), scsi_inquiry_match); 1426 1427 if (match != NULL) { 1428 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1429 softc->last_media_blksize = 1430 ((struct sa_quirk_entry *)match)->prefblk; 1431 #ifdef CAMDEBUG 1432 xpt_print_path(periph->path); 1433 printf("found quirk entry %d\n", (int) 1434 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1435 #endif 1436 } else 1437 softc->quirks = SA_QUIRK_NONE; 1438 1439 /* 1440 * The SA driver supports a blocksize, but we don't know the 1441 * blocksize until we media is inserted. So, set a flag to 1442 * indicate that the blocksize is unavailable right now. 1443 */ 1444 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1445 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1446 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1447 1448 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1449 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1450 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1451 softc->devs.ctl_dev->si_drv1 = periph; 1452 1453 for (i = 0; i < SA_NUM_MODES; i++) { 1454 1455 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1456 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1457 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1458 periph->periph_name, periph->unit_number, i); 1459 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1460 1461 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1462 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1463 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1464 periph->periph_name, periph->unit_number, i); 1465 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1466 1467 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1468 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1469 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1470 periph->periph_name, periph->unit_number, i); 1471 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1472 1473 /* 1474 * Make the (well known) aliases for the first mode. 1475 */ 1476 if (i == 0) { 1477 dev_t alias; 1478 1479 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1480 "%s%d", periph->periph_name, periph->unit_number); 1481 alias->si_drv1 = periph; 1482 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1483 "n%s%d", periph->periph_name, periph->unit_number); 1484 alias->si_drv1 = periph; 1485 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1486 "e%s%d", periph->periph_name, periph->unit_number); 1487 alias->si_drv1 = periph; 1488 } 1489 } 1490 1491 /* 1492 * Add an async callback so that we get 1493 * notified if this device goes away. 1494 */ 1495 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1496 csa.ccb_h.func_code = XPT_SASYNC_CB; 1497 csa.event_enable = AC_LOST_DEVICE; 1498 csa.callback = saasync; 1499 csa.callback_arg = periph; 1500 xpt_action((union ccb *)&csa); 1501 1502 xpt_announce_periph(periph, NULL); 1503 1504 return (CAM_REQ_CMP); 1505 } 1506 1507 static void 1508 sastart(struct cam_periph *periph, union ccb *start_ccb) 1509 { 1510 struct sa_softc *softc; 1511 1512 softc = (struct sa_softc *)periph->softc; 1513 1514 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1515 1516 1517 switch (softc->state) { 1518 case SA_STATE_NORMAL: 1519 { 1520 /* Pull a buffer from the queue and get going on it */ 1521 struct bio *bp; 1522 int s; 1523 1524 /* 1525 * See if there is a buf with work for us to do.. 1526 */ 1527 s = splbio(); 1528 bp = bioq_first(&softc->bio_queue); 1529 if (periph->immediate_priority <= periph->pinfo.priority) { 1530 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1531 ("queuing for immediate ccb\n")); 1532 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1533 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1534 periph_links.sle); 1535 periph->immediate_priority = CAM_PRIORITY_NONE; 1536 splx(s); 1537 wakeup(&periph->ccb_list); 1538 } else if (bp == NULL) { 1539 splx(s); 1540 xpt_release_ccb(start_ccb); 1541 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1542 struct bio *done_bp; 1543 again: 1544 softc->queue_count--; 1545 bioq_remove(&softc->bio_queue, bp); 1546 bp->bio_resid = bp->bio_bcount; 1547 done_bp = bp; 1548 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1549 /* 1550 * We now just clear errors in this case 1551 * and let the residual be the notifier. 1552 */ 1553 bp->bio_error = 0; 1554 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1555 /* 1556 * This can only happen if we're reading 1557 * in fixed length mode. In this case, 1558 * we dump the rest of the list the 1559 * same way. 1560 */ 1561 bp->bio_error = 0; 1562 if (bioq_first(&softc->bio_queue) != NULL) { 1563 biodone(done_bp); 1564 goto again; 1565 } 1566 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1567 bp->bio_error = EIO; 1568 bp->bio_flags |= BIO_ERROR; 1569 } 1570 bp = bioq_first(&softc->bio_queue); 1571 /* 1572 * Only if we have no other buffers queued up 1573 * do we clear the pending error flag. 1574 */ 1575 if (bp == NULL) 1576 softc->flags &= ~SA_FLAG_ERR_PENDING; 1577 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1578 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1579 "%d more buffers queued up\n", 1580 (softc->flags & SA_FLAG_ERR_PENDING), 1581 (bp != NULL)? "not " : " ", softc->queue_count)); 1582 splx(s); 1583 xpt_release_ccb(start_ccb); 1584 biodone(done_bp); 1585 } else { 1586 u_int32_t length; 1587 1588 bioq_remove(&softc->bio_queue, bp); 1589 softc->queue_count--; 1590 1591 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1592 if (softc->blk_shift != 0) { 1593 length = 1594 bp->bio_bcount >> softc->blk_shift; 1595 } else if (softc->media_blksize != 0) { 1596 length = bp->bio_bcount / 1597 softc->media_blksize; 1598 } else { 1599 bp->bio_error = EIO; 1600 xpt_print_path(periph->path); 1601 printf("zero blocksize for " 1602 "FIXED length writes?\n"); 1603 splx(s); 1604 biodone(bp); 1605 break; 1606 } 1607 #if 0 1608 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1609 ("issuing a %d fixed record %s\n", 1610 length, (bp->bio_cmd == BIO_READ)? "read" : 1611 "write")); 1612 #endif 1613 } else { 1614 length = bp->bio_bcount; 1615 #if 0 1616 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1617 ("issuing a %d variable byte %s\n", 1618 length, (bp->bio_cmd == BIO_READ)? "read" : 1619 "write")); 1620 #endif 1621 } 1622 devstat_start_transaction_bio(softc->device_stats, bp); 1623 /* 1624 * Some people have theorized that we should 1625 * suppress illegal length indication if we are 1626 * running in variable block mode so that we don't 1627 * have to request sense every time our requested 1628 * block size is larger than the written block. 1629 * The residual information from the ccb allows 1630 * us to identify this situation anyway. The only 1631 * problem with this is that we will not get 1632 * information about blocks that are larger than 1633 * our read buffer unless we set the block size 1634 * in the mode page to something other than 0. 1635 * 1636 * I believe that this is a non-issue. If user apps 1637 * don't adjust their read size to match our record 1638 * size, that's just life. Anyway, the typical usage 1639 * would be to issue, e.g., 64KB reads and occasionally 1640 * have to do deal with 512 byte or 1KB intermediate 1641 * records. 1642 */ 1643 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1644 MTIO_DSREG_RD : MTIO_DSREG_WR; 1645 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1646 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1647 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1648 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1649 IO_TIMEOUT); 1650 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1651 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1652 start_ccb->ccb_h.ccb_bp = bp; 1653 bp = bioq_first(&softc->bio_queue); 1654 splx(s); 1655 xpt_action(start_ccb); 1656 } 1657 1658 if (bp != NULL) { 1659 /* Have more work to do, so ensure we stay scheduled */ 1660 xpt_schedule(periph, 1); 1661 } 1662 break; 1663 } 1664 case SA_STATE_ABNORMAL: 1665 default: 1666 panic("state 0x%x in sastart", softc->state); 1667 break; 1668 } 1669 } 1670 1671 1672 static void 1673 sadone(struct cam_periph *periph, union ccb *done_ccb) 1674 { 1675 struct sa_softc *softc; 1676 struct ccb_scsiio *csio; 1677 1678 softc = (struct sa_softc *)periph->softc; 1679 csio = &done_ccb->csio; 1680 switch (CCB_Type(csio)) { 1681 case SA_CCB_BUFFER_IO: 1682 { 1683 struct bio *bp; 1684 int error; 1685 1686 softc->dsreg = MTIO_DSREG_REST; 1687 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1688 error = 0; 1689 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1690 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1691 /* 1692 * A retry was scheduled, so just return. 1693 */ 1694 return; 1695 } 1696 } 1697 1698 if (error == EIO) { 1699 int s; 1700 1701 /* 1702 * Catastrophic error. Mark the tape as frozen 1703 * (we no longer know tape position). 1704 * 1705 * Return all queued I/O with EIO, and unfreeze 1706 * our queue so that future transactions that 1707 * attempt to fix this problem can get to the 1708 * device. 1709 * 1710 */ 1711 1712 s = splbio(); 1713 softc->flags |= SA_FLAG_TAPE_FROZEN; 1714 bioq_flush(&softc->bio_queue, NULL, EIO); 1715 splx(s); 1716 } 1717 if (error != 0) { 1718 bp->bio_resid = bp->bio_bcount; 1719 bp->bio_error = error; 1720 bp->bio_flags |= BIO_ERROR; 1721 /* 1722 * In the error case, position is updated in saerror. 1723 */ 1724 } else { 1725 bp->bio_resid = csio->resid; 1726 bp->bio_error = 0; 1727 if (csio->resid != 0) { 1728 bp->bio_flags |= BIO_ERROR; 1729 } 1730 if (bp->bio_cmd == BIO_WRITE) { 1731 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1732 softc->filemarks = 0; 1733 } 1734 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1735 (softc->blkno != (daddr_t) -1)) { 1736 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1737 u_int32_t l; 1738 if (softc->blk_shift != 0) { 1739 l = bp->bio_bcount >> 1740 softc->blk_shift; 1741 } else { 1742 l = bp->bio_bcount / 1743 softc->media_blksize; 1744 } 1745 softc->blkno += (daddr_t) l; 1746 } else { 1747 softc->blkno++; 1748 } 1749 } 1750 } 1751 /* 1752 * If we had an error (immediate or pending), 1753 * release the device queue now. 1754 */ 1755 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1756 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1757 #ifdef CAMDEBUG 1758 if (error || bp->bio_resid) { 1759 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1760 ("error %d resid %ld count %ld\n", error, 1761 bp->bio_resid, bp->bio_bcount)); 1762 } 1763 #endif 1764 biofinish(bp, softc->device_stats, 0); 1765 break; 1766 } 1767 case SA_CCB_WAITING: 1768 { 1769 /* Caller will release the CCB */ 1770 wakeup(&done_ccb->ccb_h.cbfcnp); 1771 return; 1772 } 1773 } 1774 xpt_release_ccb(done_ccb); 1775 } 1776 1777 /* 1778 * Mount the tape (make sure it's ready for I/O). 1779 */ 1780 static int 1781 samount(struct cam_periph *periph, int oflags, dev_t dev) 1782 { 1783 struct sa_softc *softc; 1784 union ccb *ccb; 1785 int error; 1786 1787 /* 1788 * oflags can be checked for 'kind' of open (read-only check) - later 1789 * dev can be checked for a control-mode or compression open - later 1790 */ 1791 UNUSED_PARAMETER(oflags); 1792 UNUSED_PARAMETER(dev); 1793 1794 1795 softc = (struct sa_softc *)periph->softc; 1796 1797 /* 1798 * This should determine if something has happend since the last 1799 * open/mount that would invalidate the mount. We do *not* want 1800 * to retry this command- we just want the status. But we only 1801 * do this if we're mounted already- if we're not mounted, 1802 * we don't care about the unit read state and can instead use 1803 * this opportunity to attempt to reserve the tape unit. 1804 */ 1805 1806 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1807 ccb = cam_periph_getccb(periph, 1); 1808 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1809 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1810 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1811 softc->device_stats); 1812 QFRLS(ccb); 1813 if (error == ENXIO) { 1814 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1815 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1816 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1817 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1818 softc->device_stats); 1819 QFRLS(ccb); 1820 } else if (error) { 1821 /* 1822 * We don't need to freeze the tape because we 1823 * will now attempt to rewind/load it. 1824 */ 1825 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1826 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1827 xpt_print_path(ccb->ccb_h.path); 1828 printf("error %d on TUR in samount\n", error); 1829 } 1830 } 1831 } else { 1832 error = sareservereleaseunit(periph, TRUE); 1833 if (error) { 1834 return (error); 1835 } 1836 ccb = cam_periph_getccb(periph, 1); 1837 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1838 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1839 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1840 softc->device_stats); 1841 QFRLS(ccb); 1842 } 1843 1844 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1845 struct scsi_read_block_limits_data *rblim = NULL; 1846 int comp_enabled, comp_supported; 1847 u_int8_t write_protect, guessing = 0; 1848 1849 /* 1850 * Clear out old state. 1851 */ 1852 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1853 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1854 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1855 softc->filemarks = 0; 1856 1857 /* 1858 * *Very* first off, make sure we're loaded to BOT. 1859 */ 1860 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1861 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1862 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1863 softc->device_stats); 1864 QFRLS(ccb); 1865 1866 /* 1867 * In case this doesn't work, do a REWIND instead 1868 */ 1869 if (error) { 1870 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1871 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1872 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1873 softc->device_stats); 1874 QFRLS(ccb); 1875 } 1876 if (error) { 1877 xpt_release_ccb(ccb); 1878 goto exit; 1879 } 1880 1881 /* 1882 * Do a dummy test read to force access to the 1883 * media so that the drive will really know what's 1884 * there. We actually don't really care what the 1885 * blocksize on tape is and don't expect to really 1886 * read a full record. 1887 */ 1888 rblim = (struct scsi_read_block_limits_data *) 1889 malloc(8192, M_TEMP, M_WAITOK); 1890 if (rblim == NULL) { 1891 xpt_print_path(ccb->ccb_h.path); 1892 printf("no memory for test read\n"); 1893 xpt_release_ccb(ccb); 1894 error = ENOMEM; 1895 goto exit; 1896 } 1897 1898 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1899 scsi_sa_read_write(&ccb->csio, 0, sadone, 1900 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1901 (void *) rblim, 8192, SSD_FULL_SIZE, 1902 IO_TIMEOUT); 1903 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1904 softc->device_stats); 1905 QFRLS(ccb); 1906 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1907 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1908 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1909 SF_NO_PRINT | SF_RETRY_UA, 1910 softc->device_stats); 1911 QFRLS(ccb); 1912 if (error) { 1913 xpt_print_path(ccb->ccb_h.path); 1914 printf("unable to rewind after test read\n"); 1915 xpt_release_ccb(ccb); 1916 goto exit; 1917 } 1918 } 1919 1920 /* 1921 * Next off, determine block limits. 1922 */ 1923 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1924 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1925 1926 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1927 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 1928 1929 QFRLS(ccb); 1930 xpt_release_ccb(ccb); 1931 1932 if (error != 0) { 1933 /* 1934 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1935 * a MANDATORY command. Anyway- it doesn't matter- 1936 * we can proceed anyway. 1937 */ 1938 softc->blk_gran = 0; 1939 softc->max_blk = ~0; 1940 softc->min_blk = 0; 1941 } else { 1942 if (softc->scsi_rev >= SCSI_REV_SPC) { 1943 softc->blk_gran = RBL_GRAN(rblim); 1944 } else { 1945 softc->blk_gran = 0; 1946 } 1947 /* 1948 * We take max_blk == min_blk to mean a default to 1949 * fixed mode- but note that whatever we get out of 1950 * sagetparams below will actually determine whether 1951 * we are actually *in* fixed mode. 1952 */ 1953 softc->max_blk = scsi_3btoul(rblim->maximum); 1954 softc->min_blk = scsi_2btoul(rblim->minimum); 1955 1956 1957 } 1958 /* 1959 * Next, perform a mode sense to determine 1960 * current density, blocksize, compression etc. 1961 */ 1962 error = sagetparams(periph, SA_PARAM_ALL, 1963 &softc->media_blksize, 1964 &softc->media_density, 1965 &softc->media_numblks, 1966 &softc->buffer_mode, &write_protect, 1967 &softc->speed, &comp_supported, 1968 &comp_enabled, &softc->comp_algorithm, 1969 NULL); 1970 1971 if (error != 0) { 1972 /* 1973 * We could work a little harder here. We could 1974 * adjust our attempts to get information. It 1975 * might be an ancient tape drive. If someone 1976 * nudges us, we'll do that. 1977 */ 1978 goto exit; 1979 } 1980 1981 /* 1982 * If no quirk has determined that this is a device that is 1983 * preferred to be in fixed or variable mode, now is the time 1984 * to find out. 1985 */ 1986 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1987 guessing = 1; 1988 /* 1989 * This could be expensive to find out. Luckily we 1990 * only need to do this once. If we start out in 1991 * 'default' mode, try and set ourselves to one 1992 * of the densities that would determine a wad 1993 * of other stuff. Go from highest to lowest. 1994 */ 1995 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 1996 int i; 1997 static u_int8_t ctry[] = { 1998 SCSI_DENSITY_HALFINCH_PE, 1999 SCSI_DENSITY_HALFINCH_6250C, 2000 SCSI_DENSITY_HALFINCH_6250, 2001 SCSI_DENSITY_HALFINCH_1600, 2002 SCSI_DENSITY_HALFINCH_800, 2003 SCSI_DENSITY_QIC_4GB, 2004 SCSI_DENSITY_QIC_2GB, 2005 SCSI_DENSITY_QIC_525_320, 2006 SCSI_DENSITY_QIC_150, 2007 SCSI_DENSITY_QIC_120, 2008 SCSI_DENSITY_QIC_24, 2009 SCSI_DENSITY_QIC_11_9TRK, 2010 SCSI_DENSITY_QIC_11_4TRK, 2011 SCSI_DENSITY_QIC_1320, 2012 SCSI_DENSITY_QIC_3080, 2013 0 2014 }; 2015 for (i = 0; ctry[i]; i++) { 2016 error = sasetparams(periph, 2017 SA_PARAM_DENSITY, 0, ctry[i], 2018 0, SF_NO_PRINT); 2019 if (error == 0) { 2020 softc->media_density = ctry[i]; 2021 break; 2022 } 2023 } 2024 } 2025 switch (softc->media_density) { 2026 case SCSI_DENSITY_QIC_11_4TRK: 2027 case SCSI_DENSITY_QIC_11_9TRK: 2028 case SCSI_DENSITY_QIC_24: 2029 case SCSI_DENSITY_QIC_120: 2030 case SCSI_DENSITY_QIC_150: 2031 case SCSI_DENSITY_QIC_525_320: 2032 case SCSI_DENSITY_QIC_1320: 2033 case SCSI_DENSITY_QIC_3080: 2034 softc->quirks &= ~SA_QUIRK_2FM; 2035 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2036 softc->last_media_blksize = 512; 2037 break; 2038 case SCSI_DENSITY_QIC_4GB: 2039 case SCSI_DENSITY_QIC_2GB: 2040 softc->quirks &= ~SA_QUIRK_2FM; 2041 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2042 softc->last_media_blksize = 1024; 2043 break; 2044 default: 2045 softc->last_media_blksize = 2046 softc->media_blksize; 2047 softc->quirks |= SA_QUIRK_VARIABLE; 2048 break; 2049 } 2050 } 2051 2052 /* 2053 * If no quirk has determined that this is a device that needs 2054 * to have 2 Filemarks at EOD, now is the time to find out. 2055 */ 2056 2057 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2058 switch (softc->media_density) { 2059 case SCSI_DENSITY_HALFINCH_800: 2060 case SCSI_DENSITY_HALFINCH_1600: 2061 case SCSI_DENSITY_HALFINCH_6250: 2062 case SCSI_DENSITY_HALFINCH_6250C: 2063 case SCSI_DENSITY_HALFINCH_PE: 2064 softc->quirks &= ~SA_QUIRK_1FM; 2065 softc->quirks |= SA_QUIRK_2FM; 2066 break; 2067 default: 2068 break; 2069 } 2070 } 2071 2072 /* 2073 * Now validate that some info we got makes sense. 2074 */ 2075 if ((softc->max_blk < softc->media_blksize) || 2076 (softc->min_blk > softc->media_blksize && 2077 softc->media_blksize)) { 2078 xpt_print_path(ccb->ccb_h.path); 2079 printf("BLOCK LIMITS (%d..%d) could not match current " 2080 "block settings (%d)- adjusting\n", softc->min_blk, 2081 softc->max_blk, softc->media_blksize); 2082 softc->max_blk = softc->min_blk = 2083 softc->media_blksize; 2084 } 2085 2086 /* 2087 * Now put ourselves into the right frame of mind based 2088 * upon quirks... 2089 */ 2090 tryagain: 2091 /* 2092 * If we want to be in FIXED mode and our current blocksize 2093 * is not equal to our last blocksize (if nonzero), try and 2094 * set ourselves to this last blocksize (as the 'preferred' 2095 * block size). The initial quirkmatch at registry sets the 2096 * initial 'last' blocksize. If, for whatever reason, this 2097 * 'last' blocksize is zero, set the blocksize to 512, 2098 * or min_blk if that's larger. 2099 */ 2100 if ((softc->quirks & SA_QUIRK_FIXED) && 2101 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2102 (softc->media_blksize != softc->last_media_blksize)) { 2103 softc->media_blksize = softc->last_media_blksize; 2104 if (softc->media_blksize == 0) { 2105 softc->media_blksize = 512; 2106 if (softc->media_blksize < softc->min_blk) { 2107 softc->media_blksize = softc->min_blk; 2108 } 2109 } 2110 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2111 softc->media_blksize, 0, 0, SF_NO_PRINT); 2112 if (error) { 2113 xpt_print_path(ccb->ccb_h.path); 2114 printf("unable to set fixed blocksize to %d\n", 2115 softc->media_blksize); 2116 goto exit; 2117 } 2118 } 2119 2120 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2121 (softc->media_blksize != 0)) { 2122 softc->last_media_blksize = softc->media_blksize; 2123 softc->media_blksize = 0; 2124 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2125 0, 0, 0, SF_NO_PRINT); 2126 if (error) { 2127 /* 2128 * If this fails and we were guessing, just 2129 * assume that we got it wrong and go try 2130 * fixed block mode. Don't even check against 2131 * density code at this point. 2132 */ 2133 if (guessing) { 2134 softc->quirks &= ~SA_QUIRK_VARIABLE; 2135 softc->quirks |= SA_QUIRK_FIXED; 2136 if (softc->last_media_blksize == 0) 2137 softc->last_media_blksize = 512; 2138 goto tryagain; 2139 } 2140 xpt_print_path(ccb->ccb_h.path); 2141 printf("unable to set variable blocksize\n"); 2142 goto exit; 2143 } 2144 } 2145 2146 /* 2147 * Now that we have the current block size, 2148 * set up some parameters for sastart's usage. 2149 */ 2150 if (softc->media_blksize) { 2151 softc->flags |= SA_FLAG_FIXED; 2152 if (powerof2(softc->media_blksize)) { 2153 softc->blk_shift = 2154 ffs(softc->media_blksize) - 1; 2155 softc->blk_mask = softc->media_blksize - 1; 2156 } else { 2157 softc->blk_mask = ~0; 2158 softc->blk_shift = 0; 2159 } 2160 } else { 2161 /* 2162 * The SCSI-3 spec allows 0 to mean "unspecified". 2163 * The SCSI-1 spec allows 0 to mean 'infinite'. 2164 * 2165 * Either works here. 2166 */ 2167 if (softc->max_blk == 0) { 2168 softc->max_blk = ~0; 2169 } 2170 softc->blk_shift = 0; 2171 if (softc->blk_gran != 0) { 2172 softc->blk_mask = softc->blk_gran - 1; 2173 } else { 2174 softc->blk_mask = 0; 2175 } 2176 } 2177 2178 if (write_protect) 2179 softc->flags |= SA_FLAG_TAPE_WP; 2180 2181 if (comp_supported) { 2182 if (softc->saved_comp_algorithm == 0) 2183 softc->saved_comp_algorithm = 2184 softc->comp_algorithm; 2185 softc->flags |= SA_FLAG_COMP_SUPP; 2186 if (comp_enabled) 2187 softc->flags |= SA_FLAG_COMP_ENABLED; 2188 } else 2189 softc->flags |= SA_FLAG_COMP_UNSUPP; 2190 2191 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2192 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2193 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2194 0, 0, SF_NO_PRINT); 2195 if (error == 0) { 2196 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2197 } else { 2198 xpt_print_path(ccb->ccb_h.path); 2199 printf("unable to set buffered mode\n"); 2200 } 2201 error = 0; /* not an error */ 2202 } 2203 2204 2205 if (error == 0) { 2206 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2207 } 2208 exit: 2209 if (rblim != NULL) 2210 free(rblim, M_TEMP); 2211 2212 if (error != 0) { 2213 softc->dsreg = MTIO_DSREG_NIL; 2214 } else { 2215 softc->fileno = softc->blkno = 0; 2216 softc->dsreg = MTIO_DSREG_REST; 2217 } 2218 #ifdef SA_1FM_AT_EOD 2219 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2220 softc->quirks |= SA_QUIRK_1FM; 2221 #else 2222 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2223 softc->quirks |= SA_QUIRK_2FM; 2224 #endif 2225 } else 2226 xpt_release_ccb(ccb); 2227 2228 /* 2229 * If we return an error, we're not mounted any more, 2230 * so release any device reservation. 2231 */ 2232 if (error != 0) { 2233 (void) sareservereleaseunit(periph, FALSE); 2234 } else { 2235 /* 2236 * Clear I/O residual. 2237 */ 2238 softc->last_io_resid = 0; 2239 softc->last_ctl_resid = 0; 2240 } 2241 return (error); 2242 } 2243 2244 /* 2245 * How many filemarks do we need to write if we were to terminate the 2246 * tape session right now? Note that this can be a negative number 2247 */ 2248 2249 static int 2250 samarkswanted(struct cam_periph *periph) 2251 { 2252 int markswanted; 2253 struct sa_softc *softc; 2254 2255 softc = (struct sa_softc *)periph->softc; 2256 markswanted = 0; 2257 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2258 markswanted++; 2259 if (softc->quirks & SA_QUIRK_2FM) 2260 markswanted++; 2261 } 2262 markswanted -= softc->filemarks; 2263 return (markswanted); 2264 } 2265 2266 static int 2267 sacheckeod(struct cam_periph *periph) 2268 { 2269 int error; 2270 int markswanted; 2271 2272 markswanted = samarkswanted(periph); 2273 2274 if (markswanted > 0) { 2275 error = sawritefilemarks(periph, markswanted, FALSE); 2276 } else { 2277 error = 0; 2278 } 2279 return (error); 2280 } 2281 2282 static int 2283 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2284 { 2285 static const char *toobig = 2286 "%d-byte tape record bigger than supplied buffer\n"; 2287 struct cam_periph *periph; 2288 struct sa_softc *softc; 2289 struct ccb_scsiio *csio; 2290 struct scsi_sense_data *sense; 2291 u_int32_t resid = 0; 2292 int32_t info = 0; 2293 cam_status status; 2294 int error_code, sense_key, asc, ascq, error, aqvalid; 2295 2296 periph = xpt_path_periph(ccb->ccb_h.path); 2297 softc = (struct sa_softc *)periph->softc; 2298 csio = &ccb->csio; 2299 sense = &csio->sense_data; 2300 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2301 aqvalid = sense->extra_len >= 6; 2302 error = 0; 2303 2304 status = csio->ccb_h.status & CAM_STATUS_MASK; 2305 2306 /* 2307 * Calculate/latch up, any residuals... We do this in a funny 2-step 2308 * so we can print stuff here if we have CAM_DEBUG enabled for this 2309 * unit. 2310 */ 2311 if (status == CAM_SCSI_STATUS_ERROR) { 2312 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2313 info = (int32_t) scsi_4btoul(sense->info); 2314 resid = info; 2315 if ((softc->flags & SA_FLAG_FIXED) != 0) 2316 resid *= softc->media_blksize; 2317 } else { 2318 resid = csio->dxfer_len; 2319 info = resid; 2320 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2321 if (softc->media_blksize) 2322 info /= softc->media_blksize; 2323 } 2324 } 2325 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2326 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2327 sizeof (struct scsi_sense_data)); 2328 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2329 (int) csio->cdb_len); 2330 softc->last_io_resid = resid; 2331 softc->last_resid_was_io = 1; 2332 } else { 2333 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2334 sizeof (struct scsi_sense_data)); 2335 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2336 (int) csio->cdb_len); 2337 softc->last_ctl_resid = resid; 2338 softc->last_resid_was_io = 0; 2339 } 2340 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2341 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2342 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2343 sense_key, asc, ascq, status, 2344 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2345 } else { 2346 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2347 ("Cam Status 0x%x\n", status)); 2348 } 2349 2350 switch (status) { 2351 case CAM_REQ_CMP: 2352 return (0); 2353 case CAM_SCSI_STATUS_ERROR: 2354 /* 2355 * If a read/write command, we handle it here. 2356 */ 2357 if (CCB_Type(csio) != SA_CCB_WAITING) { 2358 break; 2359 } 2360 /* 2361 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2362 * on a non read/write command, we assume it's not an error 2363 * and propagate the residule and return. 2364 */ 2365 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2366 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2367 csio->resid = resid; 2368 QFRLS(ccb); 2369 return (0); 2370 } 2371 /* 2372 * Otherwise, we let the common code handle this. 2373 */ 2374 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2375 2376 /* 2377 * XXX: To Be Fixed 2378 * We cannot depend upon CAM honoring retry counts for these. 2379 */ 2380 case CAM_SCSI_BUS_RESET: 2381 case CAM_BDR_SENT: 2382 if (ccb->ccb_h.retry_count <= 0) { 2383 return (EIO); 2384 } 2385 /* FALLTHROUGH */ 2386 default: 2387 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2388 } 2389 2390 /* 2391 * Handle filemark, end of tape, mismatched record sizes.... 2392 * From this point out, we're only handling read/write cases. 2393 * Handle writes && reads differently. 2394 */ 2395 2396 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2397 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2398 csio->resid = resid; 2399 error = ENOSPC; 2400 } else if (sense->flags & SSD_EOM) { 2401 softc->flags |= SA_FLAG_EOM_PENDING; 2402 /* 2403 * Grotesque as it seems, the few times 2404 * I've actually seen a non-zero resid, 2405 * the tape drive actually lied and had 2406 * writtent all the data!. 2407 */ 2408 csio->resid = 0; 2409 } 2410 } else { 2411 csio->resid = resid; 2412 if (sense_key == SSD_KEY_BLANK_CHECK) { 2413 if (softc->quirks & SA_QUIRK_1FM) { 2414 error = 0; 2415 softc->flags |= SA_FLAG_EOM_PENDING; 2416 } else { 2417 error = EIO; 2418 } 2419 } else if (sense->flags & SSD_FILEMARK) { 2420 if (softc->flags & SA_FLAG_FIXED) { 2421 error = -1; 2422 softc->flags |= SA_FLAG_EOF_PENDING; 2423 } 2424 /* 2425 * Unconditionally, if we detected a filemark on a read, 2426 * mark that we've run moved a file ahead. 2427 */ 2428 if (softc->fileno != (daddr_t) -1) { 2429 softc->fileno++; 2430 softc->blkno = 0; 2431 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2432 } 2433 } 2434 } 2435 2436 /* 2437 * Incorrect Length usually applies to read, but can apply to writes. 2438 */ 2439 if (error == 0 && (sense->flags & SSD_ILI)) { 2440 if (info < 0) { 2441 xpt_print_path(csio->ccb_h.path); 2442 printf(toobig, csio->dxfer_len - info); 2443 csio->resid = csio->dxfer_len; 2444 error = EIO; 2445 } else { 2446 csio->resid = resid; 2447 if (softc->flags & SA_FLAG_FIXED) { 2448 softc->flags |= SA_FLAG_EIO_PENDING; 2449 } 2450 /* 2451 * Bump the block number if we hadn't seen a filemark. 2452 * Do this independent of errors (we've moved anyway). 2453 */ 2454 if ((sense->flags & SSD_FILEMARK) == 0) { 2455 if (softc->blkno != (daddr_t) -1) { 2456 softc->blkno++; 2457 csio->ccb_h.ccb_pflags |= 2458 SA_POSITION_UPDATED; 2459 } 2460 } 2461 } 2462 } 2463 2464 if (error <= 0) { 2465 /* 2466 * Unfreeze the queue if frozen as we're not returning anything 2467 * to our waiters that would indicate an I/O error has occurred 2468 * (yet). 2469 */ 2470 QFRLS(ccb); 2471 error = 0; 2472 } 2473 return (error); 2474 } 2475 2476 static int 2477 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2478 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2479 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2480 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2481 sa_comp_t *tcs) 2482 { 2483 union ccb *ccb; 2484 void *mode_buffer; 2485 struct scsi_mode_header_6 *mode_hdr; 2486 struct scsi_mode_blk_desc *mode_blk; 2487 int mode_buffer_len; 2488 struct sa_softc *softc; 2489 u_int8_t cpage; 2490 int error; 2491 cam_status status; 2492 2493 softc = (struct sa_softc *)periph->softc; 2494 ccb = cam_periph_getccb(periph, 1); 2495 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2496 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2497 else 2498 cpage = SA_DATA_COMPRESSION_PAGE; 2499 2500 retry: 2501 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2502 2503 if (params_to_get & SA_PARAM_COMPRESSION) { 2504 if (softc->quirks & SA_QUIRK_NOCOMP) { 2505 *comp_supported = FALSE; 2506 params_to_get &= ~SA_PARAM_COMPRESSION; 2507 } else 2508 mode_buffer_len += sizeof (sa_comp_t); 2509 } 2510 2511 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2512 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2513 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2514 2515 /* it is safe to retry this */ 2516 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2517 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2518 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2519 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2520 2521 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2522 softc->device_stats); 2523 QFRLS(ccb); 2524 2525 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2526 2527 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2528 /* 2529 * Hmm. Let's see if we can try another page... 2530 * If we've already done that, give up on compression 2531 * for this device and remember this for the future 2532 * and attempt the request without asking for compression 2533 * info. 2534 */ 2535 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2536 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2537 goto retry; 2538 } 2539 softc->quirks |= SA_QUIRK_NOCOMP; 2540 free(mode_buffer, M_TEMP); 2541 goto retry; 2542 } else if (status == CAM_SCSI_STATUS_ERROR) { 2543 /* Tell the user about the fatal error. */ 2544 scsi_sense_print(&ccb->csio); 2545 goto sagetparamsexit; 2546 } 2547 2548 /* 2549 * If the user only wants the compression information, and 2550 * the device doesn't send back the block descriptor, it's 2551 * no big deal. If the user wants more than just 2552 * compression, though, and the device doesn't pass back the 2553 * block descriptor, we need to send another mode sense to 2554 * get the block descriptor. 2555 */ 2556 if ((mode_hdr->blk_desc_len == 0) && 2557 (params_to_get & SA_PARAM_COMPRESSION) && 2558 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2559 2560 /* 2561 * Decrease the mode buffer length by the size of 2562 * the compression page, to make sure the data 2563 * there doesn't get overwritten. 2564 */ 2565 mode_buffer_len -= sizeof (sa_comp_t); 2566 2567 /* 2568 * Now move the compression page that we presumably 2569 * got back down the memory chunk a little bit so 2570 * it doesn't get spammed. 2571 */ 2572 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2573 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2574 2575 /* 2576 * Now, we issue another mode sense and just ask 2577 * for the block descriptor, etc. 2578 */ 2579 2580 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2581 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2582 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2583 SCSIOP_TIMEOUT); 2584 2585 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2586 softc->device_stats); 2587 QFRLS(ccb); 2588 2589 if (error != 0) 2590 goto sagetparamsexit; 2591 } 2592 2593 if (params_to_get & SA_PARAM_BLOCKSIZE) 2594 *blocksize = scsi_3btoul(mode_blk->blklen); 2595 2596 if (params_to_get & SA_PARAM_NUMBLOCKS) 2597 *numblocks = scsi_3btoul(mode_blk->nblocks); 2598 2599 if (params_to_get & SA_PARAM_BUFF_MODE) 2600 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2601 2602 if (params_to_get & SA_PARAM_DENSITY) 2603 *density = mode_blk->density; 2604 2605 if (params_to_get & SA_PARAM_WP) 2606 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2607 2608 if (params_to_get & SA_PARAM_SPEED) 2609 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2610 2611 if (params_to_get & SA_PARAM_COMPRESSION) { 2612 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2613 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2614 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2615 *comp_supported = 2616 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2617 *comp_enabled = 2618 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2619 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2620 } else { 2621 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2622 /* 2623 * We don't really know whether this device supports 2624 * Data Compression if the the algorithm field is 2625 * zero. Just say we do. 2626 */ 2627 *comp_supported = TRUE; 2628 *comp_enabled = 2629 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2630 *comp_algorithm = cp->sel_comp_alg; 2631 } 2632 if (tcs != NULL) 2633 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2634 } 2635 2636 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2637 int idx; 2638 char *xyz = mode_buffer; 2639 xpt_print_path(periph->path); 2640 printf("Mode Sense Data="); 2641 for (idx = 0; idx < mode_buffer_len; idx++) 2642 printf(" 0x%02x", xyz[idx] & 0xff); 2643 printf("\n"); 2644 } 2645 2646 sagetparamsexit: 2647 2648 xpt_release_ccb(ccb); 2649 free(mode_buffer, M_TEMP); 2650 return (error); 2651 } 2652 2653 /* 2654 * The purpose of this function is to set one of four different parameters 2655 * for a tape drive: 2656 * - blocksize 2657 * - density 2658 * - compression / compression algorithm 2659 * - buffering mode 2660 * 2661 * The assumption is that this will be called from saioctl(), and therefore 2662 * from a process context. Thus the waiting malloc calls below. If that 2663 * assumption ever changes, the malloc calls should be changed to be 2664 * NOWAIT mallocs. 2665 * 2666 * Any or all of the four parameters may be set when this function is 2667 * called. It should handle setting more than one parameter at once. 2668 */ 2669 static int 2670 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2671 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2672 u_int32_t sense_flags) 2673 { 2674 struct sa_softc *softc; 2675 u_int32_t current_blocksize; 2676 u_int32_t current_calg; 2677 u_int8_t current_density; 2678 u_int8_t current_speed; 2679 int comp_enabled, comp_supported; 2680 void *mode_buffer; 2681 int mode_buffer_len; 2682 struct scsi_mode_header_6 *mode_hdr; 2683 struct scsi_mode_blk_desc *mode_blk; 2684 sa_comp_t *ccomp, *cpage; 2685 int buff_mode; 2686 union ccb *ccb = NULL; 2687 int error; 2688 2689 softc = (struct sa_softc *)periph->softc; 2690 2691 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2692 2693 /* 2694 * Since it doesn't make sense to set the number of blocks, or 2695 * write protection, we won't try to get the current value. We 2696 * always want to get the blocksize, so we can set it back to the 2697 * proper value. 2698 */ 2699 error = sagetparams(periph, 2700 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2701 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2702 ¤t_speed, &comp_supported, &comp_enabled, 2703 ¤t_calg, ccomp); 2704 2705 if (error != 0) { 2706 free(ccomp, M_TEMP); 2707 return (error); 2708 } 2709 2710 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2711 if (params_to_set & SA_PARAM_COMPRESSION) 2712 mode_buffer_len += sizeof (sa_comp_t); 2713 2714 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2715 2716 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2717 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2718 2719 ccb = cam_periph_getccb(periph, 1); 2720 2721 retry: 2722 2723 if (params_to_set & SA_PARAM_COMPRESSION) { 2724 if (mode_blk) { 2725 cpage = (sa_comp_t *)&mode_blk[1]; 2726 } else { 2727 cpage = (sa_comp_t *)&mode_hdr[1]; 2728 } 2729 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2730 cpage->hdr.pagecode &= ~0x80; 2731 } else 2732 cpage = NULL; 2733 2734 /* 2735 * If the caller wants us to set the blocksize, use the one they 2736 * pass in. Otherwise, use the blocksize we got back from the 2737 * mode select above. 2738 */ 2739 if (mode_blk) { 2740 if (params_to_set & SA_PARAM_BLOCKSIZE) 2741 scsi_ulto3b(blocksize, mode_blk->blklen); 2742 else 2743 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2744 2745 /* 2746 * Set density if requested, else preserve old density. 2747 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2748 * devices, else density we've latched up in our softc. 2749 */ 2750 if (params_to_set & SA_PARAM_DENSITY) { 2751 mode_blk->density = density; 2752 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2753 mode_blk->density = SCSI_SAME_DENSITY; 2754 } else { 2755 mode_blk->density = softc->media_density; 2756 } 2757 } 2758 2759 /* 2760 * For mode selects, these two fields must be zero. 2761 */ 2762 mode_hdr->data_length = 0; 2763 mode_hdr->medium_type = 0; 2764 2765 /* set the speed to the current value */ 2766 mode_hdr->dev_spec = current_speed; 2767 2768 /* if set, set single-initiator buffering mode */ 2769 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2770 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2771 } 2772 2773 if (mode_blk) 2774 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2775 else 2776 mode_hdr->blk_desc_len = 0; 2777 2778 /* 2779 * First, if the user wants us to set the compression algorithm or 2780 * just turn compression on, check to make sure that this drive 2781 * supports compression. 2782 */ 2783 if (params_to_set & SA_PARAM_COMPRESSION) { 2784 /* 2785 * If the compression algorithm is 0, disable compression. 2786 * If the compression algorithm is non-zero, enable 2787 * compression and set the compression type to the 2788 * specified compression algorithm, unless the algorithm is 2789 * MT_COMP_ENABLE. In that case, we look at the 2790 * compression algorithm that is currently set and if it is 2791 * non-zero, we leave it as-is. If it is zero, and we have 2792 * saved a compression algorithm from a time when 2793 * compression was enabled before, set the compression to 2794 * the saved value. 2795 */ 2796 switch (ccomp->hdr.pagecode & ~0x80) { 2797 case SA_DEVICE_CONFIGURATION_PAGE: 2798 { 2799 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2800 if (calg == 0) { 2801 dcp->sel_comp_alg = SA_COMP_NONE; 2802 break; 2803 } 2804 if (calg != MT_COMP_ENABLE) { 2805 dcp->sel_comp_alg = calg; 2806 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2807 softc->saved_comp_algorithm != 0) { 2808 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2809 } 2810 break; 2811 } 2812 case SA_DATA_COMPRESSION_PAGE: 2813 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2814 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2815 if (calg == 0) { 2816 /* 2817 * Disable compression, but leave the 2818 * decompression and the capability bit 2819 * alone. 2820 */ 2821 dcp->dce_and_dcc = SA_DCP_DCC; 2822 dcp->dde_and_red |= SA_DCP_DDE; 2823 break; 2824 } 2825 /* enable compression && decompression */ 2826 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2827 dcp->dde_and_red |= SA_DCP_DDE; 2828 /* 2829 * If there, use compression algorithm from caller. 2830 * Otherwise, if there's a saved compression algorithm 2831 * and there is no current algorithm, use the saved 2832 * algorithm. Else parrot back what we got and hope 2833 * for the best. 2834 */ 2835 if (calg != MT_COMP_ENABLE) { 2836 scsi_ulto4b(calg, dcp->comp_algorithm); 2837 scsi_ulto4b(calg, dcp->decomp_algorithm); 2838 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2839 softc->saved_comp_algorithm != 0) { 2840 scsi_ulto4b(softc->saved_comp_algorithm, 2841 dcp->comp_algorithm); 2842 scsi_ulto4b(softc->saved_comp_algorithm, 2843 dcp->decomp_algorithm); 2844 } 2845 break; 2846 } 2847 /* 2848 * Compression does not appear to be supported- 2849 * at least via the DATA COMPRESSION page. It 2850 * would be too much to ask us to believe that 2851 * the page itself is supported, but incorrectly 2852 * reports an ability to manipulate data compression, 2853 * so we'll assume that this device doesn't support 2854 * compression. We can just fall through for that. 2855 */ 2856 /* FALLTHROUGH */ 2857 default: 2858 /* 2859 * The drive doesn't seem to support compression, 2860 * so turn off the set compression bit. 2861 */ 2862 params_to_set &= ~SA_PARAM_COMPRESSION; 2863 xpt_print_path(periph->path); 2864 printf("device does not seem to support compression\n"); 2865 2866 /* 2867 * If that was the only thing the user wanted us to set, 2868 * clean up allocated resources and return with 2869 * 'operation not supported'. 2870 */ 2871 if (params_to_set == SA_PARAM_NONE) { 2872 free(mode_buffer, M_TEMP); 2873 xpt_release_ccb(ccb); 2874 return (ENODEV); 2875 } 2876 2877 /* 2878 * That wasn't the only thing the user wanted us to set. 2879 * So, decrease the stated mode buffer length by the 2880 * size of the compression mode page. 2881 */ 2882 mode_buffer_len -= sizeof(sa_comp_t); 2883 } 2884 } 2885 2886 /* It is safe to retry this operation */ 2887 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2888 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2889 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2890 2891 error = cam_periph_runccb(ccb, saerror, 0, 2892 sense_flags, softc->device_stats); 2893 QFRLS(ccb); 2894 2895 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2896 int idx; 2897 char *xyz = mode_buffer; 2898 xpt_print_path(periph->path); 2899 printf("Err%d, Mode Select Data=", error); 2900 for (idx = 0; idx < mode_buffer_len; idx++) 2901 printf(" 0x%02x", xyz[idx] & 0xff); 2902 printf("\n"); 2903 } 2904 2905 2906 if (error) { 2907 /* 2908 * If we can, try without setting density/blocksize. 2909 */ 2910 if (mode_blk) { 2911 if ((params_to_set & 2912 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2913 mode_blk = NULL; 2914 goto retry; 2915 } 2916 } else { 2917 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2918 cpage = (sa_comp_t *)&mode_blk[1]; 2919 } 2920 2921 /* 2922 * If we were setting the blocksize, and that failed, we 2923 * want to set it to its original value. If we weren't 2924 * setting the blocksize, we don't want to change it. 2925 */ 2926 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2927 2928 /* 2929 * Set density if requested, else preserve old density. 2930 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2931 * devices, else density we've latched up in our softc. 2932 */ 2933 if (params_to_set & SA_PARAM_DENSITY) { 2934 mode_blk->density = current_density; 2935 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2936 mode_blk->density = SCSI_SAME_DENSITY; 2937 } else { 2938 mode_blk->density = softc->media_density; 2939 } 2940 2941 if (params_to_set & SA_PARAM_COMPRESSION) 2942 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2943 2944 /* 2945 * The retry count is the only CCB field that might have been 2946 * changed that we care about, so reset it back to 1. 2947 */ 2948 ccb->ccb_h.retry_count = 1; 2949 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2950 softc->device_stats); 2951 QFRLS(ccb); 2952 } 2953 2954 xpt_release_ccb(ccb); 2955 2956 if (ccomp != NULL) 2957 free(ccomp, M_TEMP); 2958 2959 if (params_to_set & SA_PARAM_COMPRESSION) { 2960 if (error) { 2961 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2962 /* 2963 * Even if we get an error setting compression, 2964 * do not say that we don't support it. We could 2965 * have been wrong, or it may be media specific. 2966 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2967 */ 2968 softc->saved_comp_algorithm = softc->comp_algorithm; 2969 softc->comp_algorithm = 0; 2970 } else { 2971 softc->flags |= SA_FLAG_COMP_ENABLED; 2972 softc->comp_algorithm = calg; 2973 } 2974 } 2975 2976 free(mode_buffer, M_TEMP); 2977 return (error); 2978 } 2979 2980 static void 2981 saprevent(struct cam_periph *periph, int action) 2982 { 2983 struct sa_softc *softc; 2984 union ccb *ccb; 2985 int error, sf; 2986 2987 softc = (struct sa_softc *)periph->softc; 2988 2989 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2990 return; 2991 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2992 return; 2993 2994 /* 2995 * We can be quiet about illegal requests. 2996 */ 2997 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2998 sf = 0; 2999 } else 3000 sf = SF_QUIET_IR; 3001 3002 ccb = cam_periph_getccb(periph, 1); 3003 3004 /* It is safe to retry this operation */ 3005 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3006 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3007 3008 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3009 QFRLS(ccb); 3010 if (error == 0) { 3011 if (action == PR_ALLOW) 3012 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3013 else 3014 softc->flags |= SA_FLAG_TAPE_LOCKED; 3015 } 3016 3017 xpt_release_ccb(ccb); 3018 } 3019 3020 static int 3021 sarewind(struct cam_periph *periph) 3022 { 3023 union ccb *ccb; 3024 struct sa_softc *softc; 3025 int error; 3026 3027 softc = (struct sa_softc *)periph->softc; 3028 3029 ccb = cam_periph_getccb(periph, 1); 3030 3031 /* It is safe to retry this operation */ 3032 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3033 SSD_FULL_SIZE, REWIND_TIMEOUT); 3034 3035 softc->dsreg = MTIO_DSREG_REW; 3036 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3037 softc->dsreg = MTIO_DSREG_REST; 3038 3039 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3040 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3041 3042 xpt_release_ccb(ccb); 3043 if (error == 0) 3044 softc->fileno = softc->blkno = (daddr_t) 0; 3045 else 3046 softc->fileno = softc->blkno = (daddr_t) -1; 3047 return (error); 3048 } 3049 3050 static int 3051 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3052 { 3053 union ccb *ccb; 3054 struct sa_softc *softc; 3055 int error; 3056 3057 softc = (struct sa_softc *)periph->softc; 3058 3059 ccb = cam_periph_getccb(periph, 1); 3060 3061 /* This cannot be retried */ 3062 3063 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3064 SSD_FULL_SIZE, SPACE_TIMEOUT); 3065 3066 /* 3067 * Clear residual because we will be using it. 3068 */ 3069 softc->last_ctl_resid = 0; 3070 3071 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3072 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3073 softc->dsreg = MTIO_DSREG_REST; 3074 3075 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3076 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3077 3078 xpt_release_ccb(ccb); 3079 3080 /* 3081 * If a spacing operation has failed, we need to invalidate 3082 * this mount. 3083 * 3084 * If the spacing operation was setmarks or to end of recorded data, 3085 * we no longer know our relative position. 3086 * 3087 * If the spacing operations was spacing files in reverse, we 3088 * take account of the residual, but still check against less 3089 * than zero- if we've gone negative, we must have hit BOT. 3090 * 3091 * If the spacing operations was spacing records in reverse and 3092 * we have a residual, we've either hit BOT or hit a filemark. 3093 * In the former case, we know our new record number (0). In 3094 * the latter case, we have absolutely no idea what the real 3095 * record number is- we've stopped between the end of the last 3096 * record in the previous file and the filemark that stopped 3097 * our spacing backwards. 3098 */ 3099 if (error) { 3100 softc->fileno = softc->blkno = (daddr_t) -1; 3101 } else if (code == SS_SETMARKS || code == SS_EOD) { 3102 softc->fileno = softc->blkno = (daddr_t) -1; 3103 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3104 softc->fileno += (count - softc->last_ctl_resid); 3105 if (softc->fileno < 0) /* we must of hit BOT */ 3106 softc->fileno = 0; 3107 softc->blkno = 0; 3108 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3109 softc->blkno += (count - softc->last_ctl_resid); 3110 if (count < 0) { 3111 if (softc->last_ctl_resid || softc->blkno < 0) { 3112 if (softc->fileno == 0) { 3113 softc->blkno = 0; 3114 } else { 3115 softc->blkno = (daddr_t) -1; 3116 } 3117 } 3118 } 3119 } 3120 return (error); 3121 } 3122 3123 static int 3124 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3125 { 3126 union ccb *ccb; 3127 struct sa_softc *softc; 3128 int error, nwm = 0; 3129 3130 softc = (struct sa_softc *)periph->softc; 3131 3132 ccb = cam_periph_getccb(periph, 1); 3133 /* 3134 * Clear residual because we will be using it. 3135 */ 3136 softc->last_ctl_resid = 0; 3137 3138 softc->dsreg = MTIO_DSREG_FMK; 3139 /* this *must* not be retried */ 3140 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3141 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3142 softc->dsreg = MTIO_DSREG_REST; 3143 3144 3145 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3146 3147 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3148 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3149 3150 if (error == 0 && nmarks) { 3151 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3152 nwm = nmarks - softc->last_ctl_resid; 3153 softc->filemarks += nwm; 3154 } 3155 3156 xpt_release_ccb(ccb); 3157 3158 /* 3159 * Update relative positions (if we're doing that). 3160 */ 3161 if (error) { 3162 softc->fileno = softc->blkno = (daddr_t) -1; 3163 } else if (softc->fileno != (daddr_t) -1) { 3164 softc->fileno += nwm; 3165 softc->blkno = 0; 3166 } 3167 return (error); 3168 } 3169 3170 static int 3171 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3172 { 3173 struct scsi_tape_position_data loc; 3174 union ccb *ccb; 3175 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3176 int error; 3177 3178 /* 3179 * We try and flush any buffered writes here if we were writing 3180 * and we're trying to get hardware block position. It eats 3181 * up performance substantially, but I'm wary of drive firmware. 3182 * 3183 * I think that *logical* block position is probably okay- 3184 * but hardware block position might have to wait for data 3185 * to hit media to be valid. Caveat Emptor. 3186 */ 3187 3188 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3189 error = sawritefilemarks(periph, 0, 0); 3190 if (error && error != EACCES) 3191 return (error); 3192 } 3193 3194 ccb = cam_periph_getccb(periph, 1); 3195 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3196 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3197 softc->dsreg = MTIO_DSREG_RBSY; 3198 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3199 softc->dsreg = MTIO_DSREG_REST; 3200 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3201 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3202 3203 if (error == 0) { 3204 if (loc.flags & SA_RPOS_UNCERTAIN) { 3205 error = EINVAL; /* nothing is certain */ 3206 } else { 3207 *blkptr = scsi_4btoul(loc.firstblk); 3208 } 3209 } 3210 3211 xpt_release_ccb(ccb); 3212 return (error); 3213 } 3214 3215 static int 3216 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3217 { 3218 union ccb *ccb; 3219 struct sa_softc *softc; 3220 int error; 3221 3222 /* 3223 * We used to try and flush any buffered writes here. 3224 * Now we push this onto user applications to either 3225 * flush the pending writes themselves (via a zero count 3226 * WRITE FILEMARKS command) or they can trust their tape 3227 * drive to do this correctly for them. 3228 */ 3229 3230 softc = (struct sa_softc *)periph->softc; 3231 ccb = cam_periph_getccb(periph, 1); 3232 3233 3234 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3235 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3236 3237 3238 softc->dsreg = MTIO_DSREG_POS; 3239 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3240 softc->dsreg = MTIO_DSREG_REST; 3241 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3242 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3243 xpt_release_ccb(ccb); 3244 /* 3245 * Note relative file && block number position as now unknown. 3246 */ 3247 softc->fileno = softc->blkno = (daddr_t) -1; 3248 return (error); 3249 } 3250 3251 static int 3252 saretension(struct cam_periph *periph) 3253 { 3254 union ccb *ccb; 3255 struct sa_softc *softc; 3256 int error; 3257 3258 softc = (struct sa_softc *)periph->softc; 3259 3260 ccb = cam_periph_getccb(periph, 1); 3261 3262 /* It is safe to retry this operation */ 3263 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3264 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3265 3266 softc->dsreg = MTIO_DSREG_TEN; 3267 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3268 softc->dsreg = MTIO_DSREG_REST; 3269 3270 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3271 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3272 xpt_release_ccb(ccb); 3273 if (error == 0) 3274 softc->fileno = softc->blkno = (daddr_t) 0; 3275 else 3276 softc->fileno = softc->blkno = (daddr_t) -1; 3277 return (error); 3278 } 3279 3280 static int 3281 sareservereleaseunit(struct cam_periph *periph, int reserve) 3282 { 3283 union ccb *ccb; 3284 struct sa_softc *softc; 3285 int error; 3286 3287 softc = (struct sa_softc *)periph->softc; 3288 ccb = cam_periph_getccb(periph, 1); 3289 3290 /* It is safe to retry this operation */ 3291 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3292 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3293 softc->dsreg = MTIO_DSREG_RBSY; 3294 error = cam_periph_runccb(ccb, saerror, 0, 3295 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3296 softc->dsreg = MTIO_DSREG_REST; 3297 QFRLS(ccb); 3298 xpt_release_ccb(ccb); 3299 3300 /* 3301 * If the error was Illegal Request, then the device doesn't support 3302 * RESERVE/RELEASE. This is not an error. 3303 */ 3304 if (error == EINVAL) { 3305 error = 0; 3306 } 3307 3308 return (error); 3309 } 3310 3311 static int 3312 saloadunload(struct cam_periph *periph, int load) 3313 { 3314 union ccb *ccb; 3315 struct sa_softc *softc; 3316 int error; 3317 3318 softc = (struct sa_softc *)periph->softc; 3319 3320 ccb = cam_periph_getccb(periph, 1); 3321 3322 /* It is safe to retry this operation */ 3323 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3324 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3325 3326 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3327 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3328 softc->dsreg = MTIO_DSREG_REST; 3329 QFRLS(ccb); 3330 xpt_release_ccb(ccb); 3331 3332 if (error || load == 0) 3333 softc->fileno = softc->blkno = (daddr_t) -1; 3334 else if (error == 0) 3335 softc->fileno = softc->blkno = (daddr_t) 0; 3336 return (error); 3337 } 3338 3339 static int 3340 saerase(struct cam_periph *periph, int longerase) 3341 { 3342 3343 union ccb *ccb; 3344 struct sa_softc *softc; 3345 int error; 3346 3347 softc = (struct sa_softc *)periph->softc; 3348 3349 ccb = cam_periph_getccb(periph, 1); 3350 3351 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3352 SSD_FULL_SIZE, ERASE_TIMEOUT); 3353 3354 softc->dsreg = MTIO_DSREG_ZER; 3355 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3356 softc->dsreg = MTIO_DSREG_REST; 3357 3358 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3359 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3360 xpt_release_ccb(ccb); 3361 return (error); 3362 } 3363 3364 #endif /* _KERNEL */ 3365 3366 /* 3367 * Read tape block limits command. 3368 */ 3369 void 3370 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3371 void (*cbfcnp)(struct cam_periph *, union ccb *), 3372 u_int8_t tag_action, 3373 struct scsi_read_block_limits_data *rlimit_buf, 3374 u_int8_t sense_len, u_int32_t timeout) 3375 { 3376 struct scsi_read_block_limits *scsi_cmd; 3377 3378 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3379 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3380 sizeof(*scsi_cmd), timeout); 3381 3382 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3383 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3384 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3385 } 3386 3387 void 3388 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3389 void (*cbfcnp)(struct cam_periph *, union ccb *), 3390 u_int8_t tag_action, int readop, int sli, 3391 int fixed, u_int32_t length, u_int8_t *data_ptr, 3392 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3393 { 3394 struct scsi_sa_rw *scsi_cmd; 3395 3396 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3397 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3398 scsi_cmd->sli_fixed = 0; 3399 if (sli && readop) 3400 scsi_cmd->sli_fixed |= SAR_SLI; 3401 if (fixed) 3402 scsi_cmd->sli_fixed |= SARW_FIXED; 3403 scsi_ulto3b(length, scsi_cmd->length); 3404 scsi_cmd->control = 0; 3405 3406 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3407 tag_action, data_ptr, dxfer_len, sense_len, 3408 sizeof(*scsi_cmd), timeout); 3409 } 3410 3411 void 3412 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3413 void (*cbfcnp)(struct cam_periph *, union ccb *), 3414 u_int8_t tag_action, int immediate, int eot, 3415 int reten, int load, u_int8_t sense_len, 3416 u_int32_t timeout) 3417 { 3418 struct scsi_load_unload *scsi_cmd; 3419 3420 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3421 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3422 scsi_cmd->opcode = LOAD_UNLOAD; 3423 if (immediate) 3424 scsi_cmd->immediate = SLU_IMMED; 3425 if (eot) 3426 scsi_cmd->eot_reten_load |= SLU_EOT; 3427 if (reten) 3428 scsi_cmd->eot_reten_load |= SLU_RETEN; 3429 if (load) 3430 scsi_cmd->eot_reten_load |= SLU_LOAD; 3431 3432 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3433 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3434 } 3435 3436 void 3437 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3438 void (*cbfcnp)(struct cam_periph *, union ccb *), 3439 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3440 u_int32_t timeout) 3441 { 3442 struct scsi_rewind *scsi_cmd; 3443 3444 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3445 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3446 scsi_cmd->opcode = REWIND; 3447 if (immediate) 3448 scsi_cmd->immediate = SREW_IMMED; 3449 3450 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3451 0, sense_len, sizeof(*scsi_cmd), timeout); 3452 } 3453 3454 void 3455 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3456 void (*cbfcnp)(struct cam_periph *, union ccb *), 3457 u_int8_t tag_action, scsi_space_code code, 3458 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3459 { 3460 struct scsi_space *scsi_cmd; 3461 3462 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3463 scsi_cmd->opcode = SPACE; 3464 scsi_cmd->code = code; 3465 scsi_ulto3b(count, scsi_cmd->count); 3466 scsi_cmd->control = 0; 3467 3468 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3469 0, sense_len, sizeof(*scsi_cmd), timeout); 3470 } 3471 3472 void 3473 scsi_write_filemarks(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 setmark, 3476 u_int32_t num_marks, u_int8_t sense_len, 3477 u_int32_t timeout) 3478 { 3479 struct scsi_write_filemarks *scsi_cmd; 3480 3481 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3482 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3483 scsi_cmd->opcode = WRITE_FILEMARKS; 3484 if (immediate) 3485 scsi_cmd->byte2 |= SWFMRK_IMMED; 3486 if (setmark) 3487 scsi_cmd->byte2 |= SWFMRK_WSMK; 3488 3489 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3490 3491 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3492 0, sense_len, sizeof(*scsi_cmd), timeout); 3493 } 3494 3495 /* 3496 * The reserve and release unit commands differ only by their opcodes. 3497 */ 3498 void 3499 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3500 void (*cbfcnp)(struct cam_periph *, union ccb *), 3501 u_int8_t tag_action, int third_party, 3502 int third_party_id, u_int8_t sense_len, 3503 u_int32_t timeout, int reserve) 3504 { 3505 struct scsi_reserve_release_unit *scsi_cmd; 3506 3507 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3508 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3509 3510 if (reserve) 3511 scsi_cmd->opcode = RESERVE_UNIT; 3512 else 3513 scsi_cmd->opcode = RELEASE_UNIT; 3514 3515 if (third_party) { 3516 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3517 scsi_cmd->lun_thirdparty |= 3518 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3519 } 3520 3521 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3522 0, sense_len, sizeof(*scsi_cmd), timeout); 3523 } 3524 3525 void 3526 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3527 void (*cbfcnp)(struct cam_periph *, union ccb *), 3528 u_int8_t tag_action, int immediate, int long_erase, 3529 u_int8_t sense_len, u_int32_t timeout) 3530 { 3531 struct scsi_erase *scsi_cmd; 3532 3533 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3534 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3535 3536 scsi_cmd->opcode = ERASE; 3537 3538 if (immediate) 3539 scsi_cmd->lun_imm_long |= SE_IMMED; 3540 3541 if (long_erase) 3542 scsi_cmd->lun_imm_long |= SE_LONG; 3543 3544 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3545 0, sense_len, sizeof(*scsi_cmd), timeout); 3546 } 3547 3548 /* 3549 * Read Tape Position command. 3550 */ 3551 void 3552 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3553 void (*cbfcnp)(struct cam_periph *, union ccb *), 3554 u_int8_t tag_action, int hardsoft, 3555 struct scsi_tape_position_data *sbp, 3556 u_int8_t sense_len, u_int32_t timeout) 3557 { 3558 struct scsi_tape_read_position *scmd; 3559 3560 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3561 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3562 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3563 bzero(scmd, sizeof(*scmd)); 3564 scmd->opcode = READ_POSITION; 3565 scmd->byte1 = hardsoft; 3566 } 3567 3568 /* 3569 * Set Tape Position command. 3570 */ 3571 void 3572 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3573 void (*cbfcnp)(struct cam_periph *, union ccb *), 3574 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3575 u_int8_t sense_len, u_int32_t timeout) 3576 { 3577 struct scsi_tape_locate *scmd; 3578 3579 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3580 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3581 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3582 bzero(scmd, sizeof(*scmd)); 3583 scmd->opcode = LOCATE; 3584 if (hardsoft) 3585 scmd->byte1 |= SA_SPOS_BT; 3586 scsi_ulto4b(blkno, scmd->blkaddr); 3587 }
Cache object: 8dad574f0f6fd3ba8b5bd91ed5f21d53
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