1 /* 2 * $FreeBSD$ 3 * 4 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 5 * 6 * Copyright (c) 1999, 2000 Matthew Jacob 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification, immediately at the beginning of the file. 15 * 2. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 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/malloc.h> 42 #include <sys/mtio.h> 43 #ifdef _KERNEL 44 #include <sys/conf.h> 45 #endif 46 #include <sys/devicestat.h> 47 #include <machine/limits.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 mode; 447 int density; 448 int error; 449 int s; 450 451 unit = SAUNIT(dev); 452 mode = SAMODE(dev); 453 density = SADENSITY(dev); 454 455 s = splsoftcam(); 456 periph = (struct cam_periph *)dev->si_drv1; 457 if (periph == NULL) { 458 (void) splx(s); 459 return (ENXIO); 460 } 461 softc = (struct sa_softc *)periph->softc; 462 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 463 splx(s); 464 return (error); 465 } 466 splx(s); 467 468 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 469 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 470 471 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 472 cam_periph_unlock(periph); 473 return (ENXIO); 474 } 475 if (SA_IS_CTRL(dev)) { 476 softc->ctrl_mode = 1; 477 cam_periph_unlock(periph); 478 return (0); 479 } 480 481 482 if (softc->flags & SA_FLAG_OPEN) { 483 error = EBUSY; 484 } else if (softc->flags & SA_FLAG_INVALID) { 485 error = ENXIO; 486 } else { 487 /* 488 * The function samount ensures media is loaded and ready. 489 * It also does a device RESERVE if the tape isn't yet mounted. 490 */ 491 error = samount(periph, flags, dev); 492 } 493 494 if (error) { 495 cam_periph_release(periph); 496 } else { 497 saprevent(periph, PR_PREVENT); 498 softc->flags |= SA_FLAG_OPEN; 499 } 500 cam_periph_unlock(periph); 501 return (error); 502 } 503 504 static int 505 saclose(dev_t dev, int flag, int fmt, struct thread *td) 506 { 507 struct cam_periph *periph; 508 struct sa_softc *softc; 509 int unit, mode, error, writing, tmp; 510 int closedbits = SA_FLAG_OPEN; 511 512 unit = SAUNIT(dev); 513 mode = SAMODE(dev); 514 periph = (struct cam_periph *)dev->si_drv1; 515 if (periph == NULL) 516 return (ENXIO); 517 518 softc = (struct sa_softc *)periph->softc; 519 520 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 521 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 522 523 524 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 525 return (error); 526 } 527 528 if (SA_IS_CTRL(dev)) { 529 softc->ctrl_mode = 0; 530 cam_periph_release(periph); 531 cam_periph_unlock(periph); 532 return (0); 533 } 534 535 /* 536 * Were we writing the tape? 537 */ 538 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 539 540 /* 541 * See whether or not we need to write filemarks. If this 542 * fails, we probably have to assume we've lost tape 543 * position. 544 */ 545 error = sacheckeod(periph); 546 if (error) { 547 xpt_print_path(periph->path); 548 printf("failed to write terminating filemark(s)\n"); 549 softc->flags |= SA_FLAG_TAPE_FROZEN; 550 } 551 552 /* 553 * Whatever we end up doing, allow users to eject tapes from here on. 554 */ 555 saprevent(periph, PR_ALLOW); 556 557 /* 558 * Decide how to end... 559 */ 560 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 561 closedbits |= SA_FLAG_TAPE_FROZEN; 562 } else switch (mode) { 563 case SA_MODE_OFFLINE: 564 /* 565 * An 'offline' close is an unconditional release of 566 * frozen && mount conditions, irrespective of whether 567 * these operations succeeded. The reason for this is 568 * to allow at least some kind of programmatic way 569 * around our state getting all fouled up. If somebody 570 * issues an 'offline' command, that will be allowed 571 * to clear state. 572 */ 573 (void) sarewind(periph); 574 (void) saloadunload(periph, FALSE); 575 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 576 break; 577 case SA_MODE_REWIND: 578 /* 579 * If the rewind fails, return an error- if anyone cares, 580 * but not overwriting any previous error. 581 * 582 * We don't clear the notion of mounted here, but we do 583 * clear the notion of frozen if we successfully rewound. 584 */ 585 tmp = sarewind(periph); 586 if (tmp) { 587 if (error != 0) 588 error = tmp; 589 } else { 590 closedbits |= SA_FLAG_TAPE_FROZEN; 591 } 592 break; 593 case SA_MODE_NOREWIND: 594 /* 595 * If we're not rewinding/unloading the tape, find out 596 * whether we need to back up over one of two filemarks 597 * we wrote (if we wrote two filemarks) so that appends 598 * from this point on will be sane. 599 */ 600 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 601 tmp = saspace(periph, -1, SS_FILEMARKS); 602 if (tmp) { 603 xpt_print_path(periph->path); 604 printf("unable to backspace over one of double" 605 " filemarks at end of tape\n"); 606 xpt_print_path(periph->path); 607 printf("it is possible that this device" 608 " needs a SA_QUIRK_1FM quirk set for it\n"); 609 softc->flags |= SA_FLAG_TAPE_FROZEN; 610 } 611 } 612 break; 613 default: 614 xpt_print_path(periph->path); 615 panic("unknown mode 0x%x in saclose", mode); 616 /* NOTREACHED */ 617 break; 618 } 619 620 /* 621 * We wish to note here that there are no more filemarks to be written. 622 */ 623 softc->filemarks = 0; 624 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 625 626 /* 627 * And we are no longer open for business. 628 */ 629 softc->flags &= ~closedbits; 630 631 /* 632 * Inform users if tape state if frozen.... 633 */ 634 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 635 xpt_print_path(periph->path); 636 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 637 "command to clear this state.\n"); 638 } 639 640 /* release the device if it is no longer mounted */ 641 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 642 sareservereleaseunit(periph, FALSE); 643 644 cam_periph_unlock(periph); 645 cam_periph_release(periph); 646 647 return (error); 648 } 649 650 /* 651 * Actually translate the requested transfer into one the physical driver 652 * can understand. The transfer is described by a buf and will include 653 * only one physical transfer. 654 */ 655 static void 656 sastrategy(struct bio *bp) 657 { 658 struct cam_periph *periph; 659 struct sa_softc *softc; 660 int s; 661 662 bp->bio_resid = bp->bio_bcount; 663 if (SA_IS_CTRL(bp->bio_dev)) { 664 biofinish(bp, NULL, EINVAL); 665 return; 666 } 667 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 668 if (periph == NULL) { 669 biofinish(bp, NULL, ENXIO); 670 return; 671 } 672 softc = (struct sa_softc *)periph->softc; 673 674 s = splsoftcam(); 675 676 if (softc->flags & SA_FLAG_INVALID) { 677 splx(s); 678 biofinish(bp, NULL, ENXIO); 679 return; 680 } 681 682 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 683 splx(s); 684 biofinish(bp, NULL, EPERM); 685 return; 686 } 687 688 splx(s); 689 690 /* 691 * If it's a null transfer, return immediatly 692 */ 693 if (bp->bio_bcount == 0) { 694 biodone(bp); 695 return; 696 } 697 698 /* valid request? */ 699 if (softc->flags & SA_FLAG_FIXED) { 700 /* 701 * Fixed block device. The byte count must 702 * be a multiple of our block size. 703 */ 704 if (((softc->blk_mask != ~0) && 705 ((bp->bio_bcount & softc->blk_mask) != 0)) || 706 ((softc->blk_mask == ~0) && 707 ((bp->bio_bcount % softc->min_blk) != 0))) { 708 xpt_print_path(periph->path); 709 printf("Invalid request. Fixed block device " 710 "requests must be a multiple " 711 "of %d bytes\n", softc->min_blk); 712 biofinish(bp, NULL, EINVAL); 713 return; 714 } 715 } else if ((bp->bio_bcount > softc->max_blk) || 716 (bp->bio_bcount < softc->min_blk) || 717 (bp->bio_bcount & softc->blk_mask) != 0) { 718 719 xpt_print_path(periph->path); 720 printf("Invalid request. Variable block device " 721 "requests must be "); 722 if (softc->blk_mask != 0) { 723 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 724 } 725 printf("between %d and %d bytes\n", softc->min_blk, 726 softc->max_blk); 727 biofinish(bp, NULL, EINVAL); 728 return; 729 } 730 731 /* 732 * Mask interrupts so that the device cannot be invalidated until 733 * after we are in the queue. Otherwise, we might not properly 734 * clean up one of the buffers. 735 */ 736 s = splbio(); 737 738 /* 739 * Place it at the end of the queue. 740 */ 741 bioq_insert_tail(&softc->bio_queue, bp); 742 743 softc->queue_count++; 744 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 745 "%s byte %s queue count now %d\n", (int) bp->bio_bcount, 746 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 747 (bp->bio_cmd == BIO_READ)? "read" : "write", 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 unit; 768 int mode; 769 int density; 770 int error = 0; 771 772 unit = SAUNIT(dev); 773 mode = SAMODE(dev); 774 density = SADENSITY(dev); 775 error = 0; /* shut up gcc */ 776 spaceop = 0; /* shut up gcc */ 777 778 periph = (struct cam_periph *)dev->si_drv1; 779 if (periph == NULL) 780 return (ENXIO); 781 782 softc = (struct sa_softc *)periph->softc; 783 784 /* 785 * Check for control mode accesses. We allow MTIOCGET and 786 * MTIOCERRSTAT (but need to be the only one open in order 787 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 788 * and MTCOMP (but need to be the only one accessing this 789 * device to run those). 790 */ 791 792 if (SA_IS_CTRL(dev)) { 793 switch (cmd) { 794 case MTIOCGETEOTMODEL: 795 case MTIOCGET: 796 break; 797 case MTIOCERRSTAT: 798 /* 799 * If the periph isn't already locked, lock it 800 * so our MTIOCERRSTAT can reset latched error stats. 801 * 802 * If the periph is already locked, skip it because 803 * we're just getting status and it'll be up to the 804 * other thread that has this device open to do 805 * an MTIOCERRSTAT that would clear latched status. 806 */ 807 s = splsoftcam(); 808 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 809 error = cam_periph_lock(periph, PRIBIO|PCATCH); 810 if (error != 0) { 811 splx(s); 812 return (error); 813 } 814 didlockperiph = 1; 815 } 816 break; 817 818 case MTIOCSETEOTMODEL: 819 case MTSETBSIZ: 820 case MTSETDNSTY: 821 case MTCOMP: 822 /* 823 * We need to acquire the peripheral here rather 824 * than at open time because we are sharing writable 825 * access to data structures. 826 */ 827 s = splsoftcam(); 828 error = cam_periph_lock(periph, PRIBIO|PCATCH); 829 if (error != 0) { 830 splx(s); 831 return (error); 832 } 833 didlockperiph = 1; 834 break; 835 836 default: 837 return (EINVAL); 838 } 839 } 840 841 /* 842 * Find the device that the user is talking about 843 */ 844 switch (cmd) { 845 case MTIOCGET: 846 { 847 struct mtget *g = (struct mtget *)arg; 848 849 /* 850 * If this isn't the control mode device, actually go out 851 * and ask the drive again what it's set to. 852 */ 853 if (!SA_IS_CTRL(dev)) { 854 u_int8_t write_protect; 855 int comp_enabled, comp_supported; 856 error = sagetparams(periph, SA_PARAM_ALL, 857 &softc->media_blksize, &softc->media_density, 858 &softc->media_numblks, &softc->buffer_mode, 859 &write_protect, &softc->speed, &comp_supported, 860 &comp_enabled, &softc->comp_algorithm, NULL); 861 if (error) 862 break; 863 if (write_protect) 864 softc->flags |= SA_FLAG_TAPE_WP; 865 else 866 softc->flags &= ~SA_FLAG_TAPE_WP; 867 softc->flags &= ~(SA_FLAG_COMP_SUPP| 868 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 869 if (comp_supported) { 870 if (softc->saved_comp_algorithm == 0) 871 softc->saved_comp_algorithm = 872 softc->comp_algorithm; 873 softc->flags |= SA_FLAG_COMP_SUPP; 874 if (comp_enabled) 875 softc->flags |= SA_FLAG_COMP_ENABLED; 876 } else 877 softc->flags |= SA_FLAG_COMP_UNSUPP; 878 } 879 bzero(g, sizeof(struct mtget)); 880 g->mt_type = MT_ISAR; 881 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 882 g->mt_comp = MT_COMP_UNSUPP; 883 g->mt_comp0 = MT_COMP_UNSUPP; 884 g->mt_comp1 = MT_COMP_UNSUPP; 885 g->mt_comp2 = MT_COMP_UNSUPP; 886 g->mt_comp3 = MT_COMP_UNSUPP; 887 } else { 888 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 889 g->mt_comp = MT_COMP_DISABLED; 890 } else { 891 g->mt_comp = softc->comp_algorithm; 892 } 893 g->mt_comp0 = softc->comp_algorithm; 894 g->mt_comp1 = softc->comp_algorithm; 895 g->mt_comp2 = softc->comp_algorithm; 896 g->mt_comp3 = softc->comp_algorithm; 897 } 898 g->mt_density = softc->media_density; 899 g->mt_density0 = softc->media_density; 900 g->mt_density1 = softc->media_density; 901 g->mt_density2 = softc->media_density; 902 g->mt_density3 = softc->media_density; 903 g->mt_blksiz = softc->media_blksize; 904 g->mt_blksiz0 = softc->media_blksize; 905 g->mt_blksiz1 = softc->media_blksize; 906 g->mt_blksiz2 = softc->media_blksize; 907 g->mt_blksiz3 = softc->media_blksize; 908 g->mt_fileno = softc->fileno; 909 g->mt_blkno = softc->blkno; 910 g->mt_dsreg = (short) softc->dsreg; 911 /* 912 * Yes, we know that this is likely to overflow 913 */ 914 if (softc->last_resid_was_io) { 915 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 916 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 917 softc->last_io_resid = 0; 918 } 919 } 920 } else { 921 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 922 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 923 softc->last_ctl_resid = 0; 924 } 925 } 926 } 927 error = 0; 928 break; 929 } 930 case MTIOCERRSTAT: 931 { 932 struct scsi_tape_errors *sep = 933 &((union mterrstat *)arg)->scsi_errstat; 934 935 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 936 ("saioctl: MTIOCERRSTAT\n")); 937 938 bzero(sep, sizeof(*sep)); 939 sep->io_resid = softc->last_io_resid; 940 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 941 sizeof (sep->io_sense)); 942 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 943 sizeof (sep->io_cdb)); 944 sep->ctl_resid = softc->last_ctl_resid; 945 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 946 sizeof (sep->ctl_sense)); 947 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 948 sizeof (sep->ctl_cdb)); 949 950 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 951 bzero((caddr_t) &softc->errinfo, 952 sizeof (softc->errinfo)); 953 error = 0; 954 break; 955 } 956 case MTIOCTOP: 957 { 958 struct mtop *mt; 959 int count; 960 961 mt = (struct mtop *)arg; 962 963 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 964 ("saioctl: op=0x%x count=0x%x\n", 965 mt->mt_op, mt->mt_count)); 966 967 count = mt->mt_count; 968 switch (mt->mt_op) { 969 case MTWEOF: /* write an end-of-file marker */ 970 /* 971 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 972 * flag because by keeping track of filemarks 973 * we have last written we know ehether or not 974 * we need to write more when we close the device. 975 */ 976 error = sawritefilemarks(periph, count, FALSE); 977 break; 978 case MTWSS: /* write a setmark */ 979 error = sawritefilemarks(periph, count, TRUE); 980 break; 981 case MTBSR: /* backward space record */ 982 case MTFSR: /* forward space record */ 983 case MTBSF: /* backward space file */ 984 case MTFSF: /* forward space file */ 985 case MTBSS: /* backward space setmark */ 986 case MTFSS: /* forward space setmark */ 987 case MTEOD: /* space to end of recorded medium */ 988 { 989 int nmarks; 990 991 spaceop = SS_FILEMARKS; 992 nmarks = softc->filemarks; 993 error = sacheckeod(periph); 994 if (error) { 995 xpt_print_path(periph->path); 996 printf("EOD check prior to spacing failed\n"); 997 softc->flags |= SA_FLAG_EIO_PENDING; 998 break; 999 } 1000 nmarks -= softc->filemarks; 1001 switch(mt->mt_op) { 1002 case MTBSR: 1003 count = -count; 1004 /* FALLTHROUGH */ 1005 case MTFSR: 1006 spaceop = SS_BLOCKS; 1007 break; 1008 case MTBSF: 1009 count = -count; 1010 /* FALLTHROUGH */ 1011 case MTFSF: 1012 break; 1013 case MTBSS: 1014 count = -count; 1015 /* FALLTHROUGH */ 1016 case MTFSS: 1017 spaceop = SS_SETMARKS; 1018 break; 1019 case MTEOD: 1020 spaceop = SS_EOD; 1021 count = 0; 1022 nmarks = 0; 1023 break; 1024 default: 1025 error = EINVAL; 1026 break; 1027 } 1028 if (error) 1029 break; 1030 1031 nmarks = softc->filemarks; 1032 /* 1033 * XXX: Why are we checking again? 1034 */ 1035 error = sacheckeod(periph); 1036 if (error) 1037 break; 1038 nmarks -= softc->filemarks; 1039 error = saspace(periph, count - nmarks, spaceop); 1040 /* 1041 * At this point, clear that we've written the tape 1042 * and that we've written any filemarks. We really 1043 * don't know what the applications wishes to do next- 1044 * the sacheckeod's will make sure we terminated the 1045 * tape correctly if we'd been writing, but the next 1046 * action the user application takes will set again 1047 * whether we need to write filemarks. 1048 */ 1049 softc->flags &= 1050 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1051 softc->filemarks = 0; 1052 break; 1053 } 1054 case MTREW: /* rewind */ 1055 (void) sacheckeod(periph); 1056 error = sarewind(periph); 1057 /* see above */ 1058 softc->flags &= 1059 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1060 softc->flags &= ~SA_FLAG_ERR_PENDING; 1061 softc->filemarks = 0; 1062 break; 1063 case MTERASE: /* erase */ 1064 error = saerase(periph, count); 1065 softc->flags &= 1066 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1067 softc->flags &= ~SA_FLAG_ERR_PENDING; 1068 break; 1069 case MTRETENS: /* re-tension tape */ 1070 error = saretension(periph); 1071 softc->flags &= 1072 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1073 softc->flags &= ~SA_FLAG_ERR_PENDING; 1074 break; 1075 case MTOFFL: /* rewind and put the drive offline */ 1076 1077 (void) sacheckeod(periph); 1078 /* see above */ 1079 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1080 softc->filemarks = 0; 1081 1082 error = sarewind(periph); 1083 /* clear the frozen flag anyway */ 1084 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1085 1086 /* 1087 * Be sure to allow media removal before ejecting. 1088 */ 1089 1090 saprevent(periph, PR_ALLOW); 1091 if (error == 0) { 1092 error = saloadunload(periph, FALSE); 1093 if (error == 0) { 1094 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1095 } 1096 } 1097 break; 1098 1099 case MTNOP: /* no operation, sets status only */ 1100 case MTCACHE: /* enable controller cache */ 1101 case MTNOCACHE: /* disable controller cache */ 1102 error = 0; 1103 break; 1104 1105 case MTSETBSIZ: /* Set block size for device */ 1106 1107 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1108 0, 0, 0); 1109 if (error == 0) { 1110 softc->last_media_blksize = 1111 softc->media_blksize; 1112 softc->media_blksize = count; 1113 if (count) { 1114 softc->flags |= SA_FLAG_FIXED; 1115 if (powerof2(count)) { 1116 softc->blk_shift = 1117 ffs(count) - 1; 1118 softc->blk_mask = count - 1; 1119 } else { 1120 softc->blk_mask = ~0; 1121 softc->blk_shift = 0; 1122 } 1123 /* 1124 * Make the user's desire 'persistent'. 1125 */ 1126 softc->quirks &= ~SA_QUIRK_VARIABLE; 1127 softc->quirks |= SA_QUIRK_FIXED; 1128 } else { 1129 softc->flags &= ~SA_FLAG_FIXED; 1130 if (softc->max_blk == 0) { 1131 softc->max_blk = ~0; 1132 } 1133 softc->blk_shift = 0; 1134 if (softc->blk_gran != 0) { 1135 softc->blk_mask = 1136 softc->blk_gran - 1; 1137 } else { 1138 softc->blk_mask = 0; 1139 } 1140 /* 1141 * Make the user's desire 'persistent'. 1142 */ 1143 softc->quirks |= SA_QUIRK_VARIABLE; 1144 softc->quirks &= ~SA_QUIRK_FIXED; 1145 } 1146 } 1147 break; 1148 case MTSETDNSTY: /* Set density for device and mode */ 1149 if (count > UCHAR_MAX) { 1150 error = EINVAL; 1151 break; 1152 } else { 1153 error = sasetparams(periph, SA_PARAM_DENSITY, 1154 0, count, 0, 0); 1155 } 1156 break; 1157 case MTCOMP: /* enable compression */ 1158 /* 1159 * Some devices don't support compression, and 1160 * don't like it if you ask them for the 1161 * compression page. 1162 */ 1163 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1164 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1165 error = ENODEV; 1166 break; 1167 } 1168 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1169 0, 0, count, SF_NO_PRINT); 1170 break; 1171 default: 1172 error = EINVAL; 1173 } 1174 break; 1175 } 1176 case MTIOCIEOT: 1177 case MTIOCEEOT: 1178 error = 0; 1179 break; 1180 case MTIOCRDSPOS: 1181 error = sardpos(periph, 0, (u_int32_t *) arg); 1182 break; 1183 case MTIOCRDHPOS: 1184 error = sardpos(periph, 1, (u_int32_t *) arg); 1185 break; 1186 case MTIOCSLOCATE: 1187 error = sasetpos(periph, 0, (u_int32_t *) arg); 1188 break; 1189 case MTIOCHLOCATE: 1190 error = sasetpos(periph, 1, (u_int32_t *) arg); 1191 break; 1192 case MTIOCGETEOTMODEL: 1193 error = 0; 1194 if (softc->quirks & SA_QUIRK_1FM) 1195 mode = 1; 1196 else 1197 mode = 2; 1198 *((u_int32_t *) arg) = mode; 1199 break; 1200 case MTIOCSETEOTMODEL: 1201 error = 0; 1202 switch (*((u_int32_t *) arg)) { 1203 case 1: 1204 softc->quirks &= ~SA_QUIRK_2FM; 1205 softc->quirks |= SA_QUIRK_1FM; 1206 break; 1207 case 2: 1208 softc->quirks &= ~SA_QUIRK_1FM; 1209 softc->quirks |= SA_QUIRK_2FM; 1210 break; 1211 default: 1212 error = EINVAL; 1213 break; 1214 } 1215 break; 1216 default: 1217 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1218 break; 1219 } 1220 1221 /* 1222 * Check to see if we cleared a frozen state 1223 */ 1224 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1225 switch(cmd) { 1226 case MTIOCRDSPOS: 1227 case MTIOCRDHPOS: 1228 case MTIOCSLOCATE: 1229 case MTIOCHLOCATE: 1230 softc->fileno = (daddr_t) -1; 1231 softc->blkno = (daddr_t) -1; 1232 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1233 xpt_print_path(periph->path); 1234 printf("tape state now unfrozen.\n"); 1235 break; 1236 default: 1237 break; 1238 } 1239 } 1240 if (didlockperiph) { 1241 cam_periph_unlock(periph); 1242 } 1243 return (error); 1244 } 1245 1246 static void 1247 sainit(void) 1248 { 1249 cam_status status; 1250 struct cam_path *path; 1251 1252 /* 1253 * Install a global async callback. 1254 */ 1255 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1256 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1257 1258 if (status == CAM_REQ_CMP) { 1259 /* Register the async callbacks of interrest */ 1260 struct ccb_setasync csa; /* 1261 * This is an immediate CCB, 1262 * so using the stack is OK 1263 */ 1264 xpt_setup_ccb(&csa.ccb_h, path, 5); 1265 csa.ccb_h.func_code = XPT_SASYNC_CB; 1266 csa.event_enable = AC_FOUND_DEVICE; 1267 csa.callback = saasync; 1268 csa.callback_arg = NULL; 1269 xpt_action((union ccb *)&csa); 1270 status = csa.ccb_h.status; 1271 xpt_free_path(path); 1272 } 1273 1274 if (status != CAM_REQ_CMP) { 1275 printf("sa: Failed to attach master async callback " 1276 "due to status 0x%x!\n", status); 1277 } 1278 } 1279 1280 static void 1281 saoninvalidate(struct cam_periph *periph) 1282 { 1283 struct sa_softc *softc; 1284 struct bio *q_bp; 1285 struct ccb_setasync csa; 1286 int s; 1287 1288 softc = (struct sa_softc *)periph->softc; 1289 1290 /* 1291 * De-register any async callbacks. 1292 */ 1293 xpt_setup_ccb(&csa.ccb_h, periph->path, 1294 /* priority */ 5); 1295 csa.ccb_h.func_code = XPT_SASYNC_CB; 1296 csa.event_enable = 0; 1297 csa.callback = saasync; 1298 csa.callback_arg = periph; 1299 xpt_action((union ccb *)&csa); 1300 1301 softc->flags |= SA_FLAG_INVALID; 1302 1303 /* 1304 * Although the oninvalidate() routines are always called at 1305 * splsoftcam, we need to be at splbio() here to keep the buffer 1306 * queue from being modified while we traverse it. 1307 */ 1308 s = splbio(); 1309 1310 /* 1311 * Return all queued I/O with ENXIO. 1312 * XXX Handle any transactions queued to the card 1313 * with XPT_ABORT_CCB. 1314 */ 1315 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){ 1316 bioq_remove(&softc->bio_queue, q_bp); 1317 q_bp->bio_resid = q_bp->bio_bcount; 1318 biofinish(q_bp, NULL, ENXIO); 1319 } 1320 softc->queue_count = 0; 1321 splx(s); 1322 1323 xpt_print_path(periph->path); 1324 printf("lost device\n"); 1325 1326 } 1327 1328 static void 1329 sacleanup(struct cam_periph *periph) 1330 { 1331 struct sa_softc *softc; 1332 int i; 1333 1334 softc = (struct sa_softc *)periph->softc; 1335 1336 devstat_remove_entry(&softc->device_stats); 1337 1338 destroy_dev(softc->devs.ctl_dev); 1339 1340 for (i = 0; i < SA_NUM_MODES; i++) { 1341 destroy_dev(softc->devs.mode_devs[i].r_dev); 1342 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1343 destroy_dev(softc->devs.mode_devs[i].er_dev); 1344 } 1345 1346 xpt_print_path(periph->path); 1347 printf("removing device entry\n"); 1348 free(softc, M_DEVBUF); 1349 } 1350 1351 static void 1352 saasync(void *callback_arg, u_int32_t code, 1353 struct cam_path *path, void *arg) 1354 { 1355 struct cam_periph *periph; 1356 1357 periph = (struct cam_periph *)callback_arg; 1358 switch (code) { 1359 case AC_FOUND_DEVICE: 1360 { 1361 struct ccb_getdev *cgd; 1362 cam_status status; 1363 1364 cgd = (struct ccb_getdev *)arg; 1365 if (cgd == NULL) 1366 break; 1367 1368 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1369 break; 1370 1371 /* 1372 * Allocate a peripheral instance for 1373 * this device and start the probe 1374 * process. 1375 */ 1376 status = cam_periph_alloc(saregister, saoninvalidate, 1377 sacleanup, sastart, 1378 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1379 saasync, AC_FOUND_DEVICE, cgd); 1380 1381 if (status != CAM_REQ_CMP 1382 && status != CAM_REQ_INPROG) 1383 printf("saasync: Unable to probe new device " 1384 "due to status 0x%x\n", status); 1385 break; 1386 } 1387 default: 1388 cam_periph_async(periph, code, path, arg); 1389 break; 1390 } 1391 } 1392 1393 static cam_status 1394 saregister(struct cam_periph *periph, void *arg) 1395 { 1396 struct sa_softc *softc; 1397 struct ccb_setasync csa; 1398 struct ccb_getdev *cgd; 1399 caddr_t match; 1400 int i; 1401 1402 cgd = (struct ccb_getdev *)arg; 1403 if (periph == NULL) { 1404 printf("saregister: periph was NULL!!\n"); 1405 return (CAM_REQ_CMP_ERR); 1406 } 1407 1408 if (cgd == NULL) { 1409 printf("saregister: no getdev CCB, can't register device\n"); 1410 return (CAM_REQ_CMP_ERR); 1411 } 1412 1413 softc = (struct sa_softc *) 1414 malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT | M_ZERO); 1415 if (softc == NULL) { 1416 printf("saregister: Unable to probe new device. " 1417 "Unable to allocate softc\n"); 1418 return (CAM_REQ_CMP_ERR); 1419 } 1420 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1421 softc->state = SA_STATE_NORMAL; 1422 softc->fileno = (daddr_t) -1; 1423 softc->blkno = (daddr_t) -1; 1424 1425 bioq_init(&softc->bio_queue); 1426 periph->softc = softc; 1427 1428 /* 1429 * See if this device has any quirks. 1430 */ 1431 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1432 (caddr_t)sa_quirk_table, 1433 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1434 sizeof(*sa_quirk_table), scsi_inquiry_match); 1435 1436 if (match != NULL) { 1437 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1438 softc->last_media_blksize = 1439 ((struct sa_quirk_entry *)match)->prefblk; 1440 #ifdef CAMDEBUG 1441 xpt_print_path(periph->path); 1442 printf("found quirk entry %d\n", (int) 1443 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1444 #endif 1445 } else 1446 softc->quirks = SA_QUIRK_NONE; 1447 1448 /* 1449 * The SA driver supports a blocksize, but we don't know the 1450 * blocksize until we media is inserted. So, set a flag to 1451 * indicate that the blocksize is unavailable right now. 1452 */ 1453 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1454 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1455 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1456 1457 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1458 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1459 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1460 softc->devs.ctl_dev->si_drv1 = periph; 1461 1462 for (i = 0; i < SA_NUM_MODES; i++) { 1463 1464 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1465 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1466 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1467 periph->periph_name, periph->unit_number, i); 1468 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1469 1470 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1471 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1472 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1473 periph->periph_name, periph->unit_number, i); 1474 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1475 1476 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1477 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1478 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1479 periph->periph_name, periph->unit_number, i); 1480 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1481 1482 /* 1483 * Make the (well known) aliases for the first mode. 1484 */ 1485 if (i == 0) { 1486 dev_t alias; 1487 1488 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1489 "%s%d", periph->periph_name, periph->unit_number); 1490 alias->si_drv1 = periph; 1491 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1492 "n%s%d", periph->periph_name, periph->unit_number); 1493 alias->si_drv1 = periph; 1494 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1495 "e%s%d", periph->periph_name, periph->unit_number); 1496 alias->si_drv1 = periph; 1497 } 1498 } 1499 1500 /* 1501 * Add an async callback so that we get 1502 * notified if this device goes away. 1503 */ 1504 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1505 csa.ccb_h.func_code = XPT_SASYNC_CB; 1506 csa.event_enable = AC_LOST_DEVICE; 1507 csa.callback = saasync; 1508 csa.callback_arg = periph; 1509 xpt_action((union ccb *)&csa); 1510 1511 xpt_announce_periph(periph, NULL); 1512 1513 return (CAM_REQ_CMP); 1514 } 1515 1516 static void 1517 sastart(struct cam_periph *periph, union ccb *start_ccb) 1518 { 1519 struct sa_softc *softc; 1520 1521 softc = (struct sa_softc *)periph->softc; 1522 1523 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1524 1525 1526 switch (softc->state) { 1527 case SA_STATE_NORMAL: 1528 { 1529 /* Pull a buffer from the queue and get going on it */ 1530 struct bio *bp; 1531 int s; 1532 1533 /* 1534 * See if there is a buf with work for us to do.. 1535 */ 1536 s = splbio(); 1537 bp = bioq_first(&softc->bio_queue); 1538 if (periph->immediate_priority <= periph->pinfo.priority) { 1539 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1540 ("queuing for immediate ccb\n")); 1541 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1542 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1543 periph_links.sle); 1544 periph->immediate_priority = CAM_PRIORITY_NONE; 1545 splx(s); 1546 wakeup(&periph->ccb_list); 1547 } else if (bp == NULL) { 1548 splx(s); 1549 xpt_release_ccb(start_ccb); 1550 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1551 struct bio *done_bp; 1552 again: 1553 softc->queue_count--; 1554 bioq_remove(&softc->bio_queue, bp); 1555 bp->bio_resid = bp->bio_bcount; 1556 done_bp = bp; 1557 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1558 /* 1559 * We now just clear errors in this case 1560 * and let the residual be the notifier. 1561 */ 1562 bp->bio_error = 0; 1563 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1564 /* 1565 * This can only happen if we're reading 1566 * in fixed length mode. In this case, 1567 * we dump the rest of the list the 1568 * same way. 1569 */ 1570 bp->bio_error = 0; 1571 if (bioq_first(&softc->bio_queue) != NULL) { 1572 biodone(done_bp); 1573 goto again; 1574 } 1575 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1576 bp->bio_error = EIO; 1577 bp->bio_flags |= BIO_ERROR; 1578 } 1579 bp = bioq_first(&softc->bio_queue); 1580 /* 1581 * Only if we have no other buffers queued up 1582 * do we clear the pending error flag. 1583 */ 1584 if (bp == NULL) 1585 softc->flags &= ~SA_FLAG_ERR_PENDING; 1586 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1587 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1588 "%d more buffers queued up\n", 1589 (softc->flags & SA_FLAG_ERR_PENDING), 1590 (bp != NULL)? "not " : " ", softc->queue_count)); 1591 splx(s); 1592 xpt_release_ccb(start_ccb); 1593 biodone(done_bp); 1594 } else { 1595 u_int32_t length; 1596 1597 bioq_remove(&softc->bio_queue, bp); 1598 softc->queue_count--; 1599 1600 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1601 if (softc->blk_shift != 0) { 1602 length = 1603 bp->bio_bcount >> softc->blk_shift; 1604 } else if (softc->media_blksize != 0) { 1605 length = bp->bio_bcount / 1606 softc->media_blksize; 1607 } else { 1608 bp->bio_error = EIO; 1609 xpt_print_path(periph->path); 1610 printf("zero blocksize for " 1611 "FIXED length writes?\n"); 1612 splx(s); 1613 biodone(bp); 1614 break; 1615 } 1616 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1617 ("Fixed Record Count is %d\n", length)); 1618 } else { 1619 length = bp->bio_bcount; 1620 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1621 ("Variable Record Count is %d\n", length)); 1622 } 1623 devstat_start_transaction(&softc->device_stats); 1624 /* 1625 * Some people have theorized that we should 1626 * suppress illegal length indication if we are 1627 * running in variable block mode so that we don't 1628 * have to request sense every time our requested 1629 * block size is larger than the written block. 1630 * The residual information from the ccb allows 1631 * us to identify this situation anyway. The only 1632 * problem with this is that we will not get 1633 * information about blocks that are larger than 1634 * our read buffer unless we set the block size 1635 * in the mode page to something other than 0. 1636 * 1637 * I believe that this is a non-issue. If user apps 1638 * don't adjust their read size to match our record 1639 * size, that's just life. Anyway, the typical usage 1640 * would be to issue, e.g., 64KB reads and occasionally 1641 * have to do deal with 512 byte or 1KB intermediate 1642 * records. 1643 */ 1644 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1645 MTIO_DSREG_RD : MTIO_DSREG_WR; 1646 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1647 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1648 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1649 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1650 IO_TIMEOUT); 1651 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1652 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1653 start_ccb->ccb_h.ccb_bp = bp; 1654 bp = bioq_first(&softc->bio_queue); 1655 splx(s); 1656 xpt_action(start_ccb); 1657 } 1658 1659 if (bp != NULL) { 1660 /* Have more work to do, so ensure we stay scheduled */ 1661 xpt_schedule(periph, 1); 1662 } 1663 break; 1664 } 1665 case SA_STATE_ABNORMAL: 1666 default: 1667 panic("state 0x%x in sastart", softc->state); 1668 break; 1669 } 1670 } 1671 1672 1673 static void 1674 sadone(struct cam_periph *periph, union ccb *done_ccb) 1675 { 1676 struct sa_softc *softc; 1677 struct ccb_scsiio *csio; 1678 1679 softc = (struct sa_softc *)periph->softc; 1680 csio = &done_ccb->csio; 1681 switch (CCB_Type(csio)) { 1682 case SA_CCB_BUFFER_IO: 1683 { 1684 struct bio *bp; 1685 int error; 1686 1687 softc->dsreg = MTIO_DSREG_REST; 1688 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1689 error = 0; 1690 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1691 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1692 /* 1693 * A retry was scheduled, so just return. 1694 */ 1695 return; 1696 } 1697 } 1698 1699 if (error == EIO) { 1700 int s; 1701 struct bio *q_bp; 1702 1703 /* 1704 * Catastrophic error. Mark the tape as frozen 1705 * (we no longer know tape position). 1706 * 1707 * Return all queued I/O with EIO, and unfreeze 1708 * our queue so that future transactions that 1709 * attempt to fix this problem can get to the 1710 * device. 1711 * 1712 */ 1713 1714 s = splbio(); 1715 softc->flags |= SA_FLAG_TAPE_FROZEN; 1716 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL) { 1717 bioq_remove(&softc->bio_queue, q_bp); 1718 q_bp->bio_resid = q_bp->bio_bcount; 1719 biofinish(q_bp, NULL, EIO); 1720 } 1721 splx(s); 1722 } 1723 if (error != 0) { 1724 bp->bio_resid = bp->bio_bcount; 1725 bp->bio_error = error; 1726 bp->bio_flags |= BIO_ERROR; 1727 /* 1728 * In the error case, position is updated in saerror. 1729 */ 1730 } else { 1731 bp->bio_resid = csio->resid; 1732 bp->bio_error = 0; 1733 if (csio->resid != 0) { 1734 bp->bio_flags |= BIO_ERROR; 1735 } 1736 if (bp->bio_cmd == BIO_WRITE) { 1737 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1738 softc->filemarks = 0; 1739 } 1740 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1741 (softc->blkno != (daddr_t) -1)) { 1742 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1743 u_int32_t l; 1744 if (softc->blk_shift != 0) { 1745 l = bp->bio_bcount >> 1746 softc->blk_shift; 1747 } else { 1748 l = bp->bio_bcount / 1749 softc->media_blksize; 1750 } 1751 softc->blkno += (daddr_t) l; 1752 } else { 1753 softc->blkno++; 1754 } 1755 } 1756 } 1757 /* 1758 * If we had an error (immediate or pending), 1759 * release the device queue now. 1760 */ 1761 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1762 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1763 #ifdef CAMDEBUG 1764 if (error || bp->bio_resid) { 1765 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1766 ("error %d resid %ld count %ld\n", error, 1767 bp->bio_resid, bp->bio_bcount)); 1768 } 1769 #endif 1770 biofinish(bp, &softc->device_stats, 0); 1771 break; 1772 } 1773 case SA_CCB_WAITING: 1774 { 1775 /* Caller will release the CCB */ 1776 wakeup(&done_ccb->ccb_h.cbfcnp); 1777 return; 1778 } 1779 } 1780 xpt_release_ccb(done_ccb); 1781 } 1782 1783 /* 1784 * Mount the tape (make sure it's ready for I/O). 1785 */ 1786 static int 1787 samount(struct cam_periph *periph, int oflags, dev_t dev) 1788 { 1789 struct sa_softc *softc; 1790 union ccb *ccb; 1791 int error; 1792 1793 /* 1794 * oflags can be checked for 'kind' of open (read-only check) - later 1795 * dev can be checked for a control-mode or compression open - later 1796 */ 1797 UNUSED_PARAMETER(oflags); 1798 UNUSED_PARAMETER(dev); 1799 1800 1801 softc = (struct sa_softc *)periph->softc; 1802 1803 /* 1804 * This should determine if something has happend since the last 1805 * open/mount that would invalidate the mount. We do *not* want 1806 * to retry this command- we just want the status. But we only 1807 * do this if we're mounted already- if we're not mounted, 1808 * we don't care about the unit read state and can instead use 1809 * this opportunity to attempt to reserve the tape unit. 1810 */ 1811 1812 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1813 ccb = cam_periph_getccb(periph, 1); 1814 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1815 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1816 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1817 &softc->device_stats); 1818 QFRLS(ccb); 1819 if (error == ENXIO) { 1820 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1821 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1822 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1823 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1824 &softc->device_stats); 1825 QFRLS(ccb); 1826 } else if (error) { 1827 /* 1828 * We don't need to freeze the tape because we 1829 * will now attempt to rewind/load it. 1830 */ 1831 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1832 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1833 xpt_print_path(ccb->ccb_h.path); 1834 printf("error %d on TUR in samount\n", error); 1835 } 1836 } 1837 } else { 1838 error = sareservereleaseunit(periph, TRUE); 1839 if (error) { 1840 return (error); 1841 } 1842 ccb = cam_periph_getccb(periph, 1); 1843 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1844 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1845 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1846 &softc->device_stats); 1847 QFRLS(ccb); 1848 } 1849 1850 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1851 struct scsi_read_block_limits_data *rblim = NULL; 1852 int comp_enabled, comp_supported; 1853 u_int8_t write_protect, guessing = 0; 1854 1855 /* 1856 * Clear out old state. 1857 */ 1858 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1859 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1860 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1861 softc->filemarks = 0; 1862 1863 /* 1864 * *Very* first off, make sure we're loaded to BOT. 1865 */ 1866 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1867 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1868 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1869 &softc->device_stats); 1870 QFRLS(ccb); 1871 1872 /* 1873 * In case this doesn't work, do a REWIND instead 1874 */ 1875 if (error) { 1876 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1877 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1878 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1879 &softc->device_stats); 1880 QFRLS(ccb); 1881 } 1882 if (error) { 1883 xpt_release_ccb(ccb); 1884 goto exit; 1885 } 1886 1887 /* 1888 * Do a dummy test read to force access to the 1889 * media so that the drive will really know what's 1890 * there. We actually don't really care what the 1891 * blocksize on tape is and don't expect to really 1892 * read a full record. 1893 */ 1894 rblim = (struct scsi_read_block_limits_data *) 1895 malloc(8192, M_TEMP, M_WAITOK); 1896 if (rblim == NULL) { 1897 xpt_print_path(ccb->ccb_h.path); 1898 printf("no memory for test read\n"); 1899 xpt_release_ccb(ccb); 1900 error = ENOMEM; 1901 goto exit; 1902 } 1903 1904 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1905 scsi_sa_read_write(&ccb->csio, 0, sadone, 1906 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1907 (void *) rblim, 8192, SSD_FULL_SIZE, 1908 IO_TIMEOUT); 1909 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1910 &softc->device_stats); 1911 QFRLS(ccb); 1912 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1913 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1914 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1915 SF_NO_PRINT | SF_RETRY_UA, 1916 &softc->device_stats); 1917 QFRLS(ccb); 1918 if (error) { 1919 xpt_print_path(ccb->ccb_h.path); 1920 printf("unable to rewind after test read\n"); 1921 xpt_release_ccb(ccb); 1922 goto exit; 1923 } 1924 } 1925 1926 /* 1927 * Next off, determine block limits. 1928 */ 1929 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1930 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1931 1932 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1933 SF_NO_PRINT | SF_RETRY_UA, &softc->device_stats); 1934 1935 QFRLS(ccb); 1936 xpt_release_ccb(ccb); 1937 1938 if (error != 0) { 1939 /* 1940 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1941 * a MANDATORY command. Anyway- it doesn't matter- 1942 * we can proceed anyway. 1943 */ 1944 softc->blk_gran = 0; 1945 softc->max_blk = ~0; 1946 softc->min_blk = 0; 1947 } else { 1948 if (softc->scsi_rev >= SCSI_REV_SPC) { 1949 softc->blk_gran = RBL_GRAN(rblim); 1950 } else { 1951 softc->blk_gran = 0; 1952 } 1953 /* 1954 * We take max_blk == min_blk to mean a default to 1955 * fixed mode- but note that whatever we get out of 1956 * sagetparams below will actually determine whether 1957 * we are actually *in* fixed mode. 1958 */ 1959 softc->max_blk = scsi_3btoul(rblim->maximum); 1960 softc->min_blk = scsi_2btoul(rblim->minimum); 1961 1962 1963 } 1964 /* 1965 * Next, perform a mode sense to determine 1966 * current density, blocksize, compression etc. 1967 */ 1968 error = sagetparams(periph, SA_PARAM_ALL, 1969 &softc->media_blksize, 1970 &softc->media_density, 1971 &softc->media_numblks, 1972 &softc->buffer_mode, &write_protect, 1973 &softc->speed, &comp_supported, 1974 &comp_enabled, &softc->comp_algorithm, 1975 NULL); 1976 1977 if (error != 0) { 1978 /* 1979 * We could work a little harder here. We could 1980 * adjust our attempts to get information. It 1981 * might be an ancient tape drive. If someone 1982 * nudges us, we'll do that. 1983 */ 1984 goto exit; 1985 } 1986 1987 /* 1988 * If no quirk has determined that this is a device that is 1989 * preferred to be in fixed or variable mode, now is the time 1990 * to find out. 1991 */ 1992 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1993 guessing = 1; 1994 /* 1995 * This could be expensive to find out. Luckily we 1996 * only need to do this once. If we start out in 1997 * 'default' mode, try and set ourselves to one 1998 * of the densities that would determine a wad 1999 * of other stuff. Go from highest to lowest. 2000 */ 2001 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2002 int i; 2003 static u_int8_t ctry[] = { 2004 SCSI_DENSITY_HALFINCH_PE, 2005 SCSI_DENSITY_HALFINCH_6250C, 2006 SCSI_DENSITY_HALFINCH_6250, 2007 SCSI_DENSITY_HALFINCH_1600, 2008 SCSI_DENSITY_HALFINCH_800, 2009 SCSI_DENSITY_QIC_4GB, 2010 SCSI_DENSITY_QIC_2GB, 2011 SCSI_DENSITY_QIC_525_320, 2012 SCSI_DENSITY_QIC_150, 2013 SCSI_DENSITY_QIC_120, 2014 SCSI_DENSITY_QIC_24, 2015 SCSI_DENSITY_QIC_11_9TRK, 2016 SCSI_DENSITY_QIC_11_4TRK, 2017 SCSI_DENSITY_QIC_1320, 2018 SCSI_DENSITY_QIC_3080, 2019 0 2020 }; 2021 for (i = 0; ctry[i]; i++) { 2022 error = sasetparams(periph, 2023 SA_PARAM_DENSITY, 0, ctry[i], 2024 0, SF_NO_PRINT); 2025 if (error == 0) { 2026 softc->media_density = ctry[i]; 2027 break; 2028 } 2029 } 2030 } 2031 switch (softc->media_density) { 2032 case SCSI_DENSITY_QIC_11_4TRK: 2033 case SCSI_DENSITY_QIC_11_9TRK: 2034 case SCSI_DENSITY_QIC_24: 2035 case SCSI_DENSITY_QIC_120: 2036 case SCSI_DENSITY_QIC_150: 2037 case SCSI_DENSITY_QIC_525_320: 2038 case SCSI_DENSITY_QIC_1320: 2039 case SCSI_DENSITY_QIC_3080: 2040 softc->quirks &= ~SA_QUIRK_2FM; 2041 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2042 softc->last_media_blksize = 512; 2043 break; 2044 case SCSI_DENSITY_QIC_4GB: 2045 case SCSI_DENSITY_QIC_2GB: 2046 softc->quirks &= ~SA_QUIRK_2FM; 2047 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2048 softc->last_media_blksize = 1024; 2049 break; 2050 default: 2051 softc->last_media_blksize = 2052 softc->media_blksize; 2053 softc->quirks |= SA_QUIRK_VARIABLE; 2054 break; 2055 } 2056 } 2057 2058 /* 2059 * If no quirk has determined that this is a device that needs 2060 * to have 2 Filemarks at EOD, now is the time to find out. 2061 */ 2062 2063 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2064 switch (softc->media_density) { 2065 case SCSI_DENSITY_HALFINCH_800: 2066 case SCSI_DENSITY_HALFINCH_1600: 2067 case SCSI_DENSITY_HALFINCH_6250: 2068 case SCSI_DENSITY_HALFINCH_6250C: 2069 case SCSI_DENSITY_HALFINCH_PE: 2070 softc->quirks &= ~SA_QUIRK_1FM; 2071 softc->quirks |= SA_QUIRK_2FM; 2072 break; 2073 default: 2074 break; 2075 } 2076 } 2077 2078 /* 2079 * Now validate that some info we got makes sense. 2080 */ 2081 if ((softc->max_blk < softc->media_blksize) || 2082 (softc->min_blk > softc->media_blksize && 2083 softc->media_blksize)) { 2084 xpt_print_path(ccb->ccb_h.path); 2085 printf("BLOCK LIMITS (%d..%d) could not match current " 2086 "block settings (%d)- adjusting\n", softc->min_blk, 2087 softc->max_blk, softc->media_blksize); 2088 softc->max_blk = softc->min_blk = 2089 softc->media_blksize; 2090 } 2091 2092 /* 2093 * Now put ourselves into the right frame of mind based 2094 * upon quirks... 2095 */ 2096 tryagain: 2097 /* 2098 * If we want to be in FIXED mode and our current blocksize 2099 * is not equal to our last blocksize (if nonzero), try and 2100 * set ourselves to this last blocksize (as the 'preferred' 2101 * block size). The initial quirkmatch at registry sets the 2102 * initial 'last' blocksize. If, for whatever reason, this 2103 * 'last' blocksize is zero, set the blocksize to 512, 2104 * or min_blk if that's larger. 2105 */ 2106 if ((softc->quirks & SA_QUIRK_FIXED) && 2107 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2108 (softc->media_blksize != softc->last_media_blksize)) { 2109 softc->media_blksize = softc->last_media_blksize; 2110 if (softc->media_blksize == 0) { 2111 softc->media_blksize = 512; 2112 if (softc->media_blksize < softc->min_blk) { 2113 softc->media_blksize = softc->min_blk; 2114 } 2115 } 2116 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2117 softc->media_blksize, 0, 0, SF_NO_PRINT); 2118 if (error) { 2119 xpt_print_path(ccb->ccb_h.path); 2120 printf("unable to set fixed blocksize to %d\n", 2121 softc->media_blksize); 2122 goto exit; 2123 } 2124 } 2125 2126 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2127 (softc->media_blksize != 0)) { 2128 softc->last_media_blksize = softc->media_blksize; 2129 softc->media_blksize = 0; 2130 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2131 0, 0, 0, SF_NO_PRINT); 2132 if (error) { 2133 /* 2134 * If this fails and we were guessing, just 2135 * assume that we got it wrong and go try 2136 * fixed block mode. Don't even check against 2137 * density code at this point. 2138 */ 2139 if (guessing) { 2140 softc->quirks &= ~SA_QUIRK_VARIABLE; 2141 softc->quirks |= SA_QUIRK_FIXED; 2142 if (softc->last_media_blksize == 0) 2143 softc->last_media_blksize = 512; 2144 goto tryagain; 2145 } 2146 xpt_print_path(ccb->ccb_h.path); 2147 printf("unable to set variable blocksize\n"); 2148 goto exit; 2149 } 2150 } 2151 2152 /* 2153 * Now that we have the current block size, 2154 * set up some parameters for sastart's usage. 2155 */ 2156 if (softc->media_blksize) { 2157 softc->flags |= SA_FLAG_FIXED; 2158 if (powerof2(softc->media_blksize)) { 2159 softc->blk_shift = 2160 ffs(softc->media_blksize) - 1; 2161 softc->blk_mask = softc->media_blksize - 1; 2162 } else { 2163 softc->blk_mask = ~0; 2164 softc->blk_shift = 0; 2165 } 2166 } else { 2167 /* 2168 * The SCSI-3 spec allows 0 to mean "unspecified". 2169 * The SCSI-1 spec allows 0 to mean 'infinite'. 2170 * 2171 * Either works here. 2172 */ 2173 if (softc->max_blk == 0) { 2174 softc->max_blk = ~0; 2175 } 2176 softc->blk_shift = 0; 2177 if (softc->blk_gran != 0) { 2178 softc->blk_mask = softc->blk_gran - 1; 2179 } else { 2180 softc->blk_mask = 0; 2181 } 2182 } 2183 2184 if (write_protect) 2185 softc->flags |= SA_FLAG_TAPE_WP; 2186 2187 if (comp_supported) { 2188 if (softc->saved_comp_algorithm == 0) 2189 softc->saved_comp_algorithm = 2190 softc->comp_algorithm; 2191 softc->flags |= SA_FLAG_COMP_SUPP; 2192 if (comp_enabled) 2193 softc->flags |= SA_FLAG_COMP_ENABLED; 2194 } else 2195 softc->flags |= SA_FLAG_COMP_UNSUPP; 2196 2197 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2198 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2199 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2200 0, 0, SF_NO_PRINT); 2201 if (error == 0) { 2202 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2203 } else { 2204 xpt_print_path(ccb->ccb_h.path); 2205 printf("unable to set buffered mode\n"); 2206 } 2207 error = 0; /* not an error */ 2208 } 2209 2210 2211 if (error == 0) { 2212 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2213 } 2214 exit: 2215 if (rblim != NULL) 2216 free(rblim, M_TEMP); 2217 2218 if (error != 0) { 2219 softc->dsreg = MTIO_DSREG_NIL; 2220 } else { 2221 softc->fileno = softc->blkno = 0; 2222 softc->dsreg = MTIO_DSREG_REST; 2223 } 2224 #ifdef SA_1FM_AT_EOD 2225 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2226 softc->quirks |= SA_QUIRK_1FM; 2227 #else 2228 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2229 softc->quirks |= SA_QUIRK_2FM; 2230 #endif 2231 } else 2232 xpt_release_ccb(ccb); 2233 2234 /* 2235 * If we return an error, we're not mounted any more, 2236 * so release any device reservation. 2237 */ 2238 if (error != 0) { 2239 (void) sareservereleaseunit(periph, FALSE); 2240 } else { 2241 /* 2242 * Clear I/O residual. 2243 */ 2244 softc->last_io_resid = 0; 2245 softc->last_ctl_resid = 0; 2246 } 2247 return (error); 2248 } 2249 2250 /* 2251 * How many filemarks do we need to write if we were to terminate the 2252 * tape session right now? Note that this can be a negative number 2253 */ 2254 2255 static int 2256 samarkswanted(struct cam_periph *periph) 2257 { 2258 int markswanted; 2259 struct sa_softc *softc; 2260 2261 softc = (struct sa_softc *)periph->softc; 2262 markswanted = 0; 2263 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2264 markswanted++; 2265 if (softc->quirks & SA_QUIRK_2FM) 2266 markswanted++; 2267 } 2268 markswanted -= softc->filemarks; 2269 return (markswanted); 2270 } 2271 2272 static int 2273 sacheckeod(struct cam_periph *periph) 2274 { 2275 int error; 2276 int markswanted; 2277 struct sa_softc *softc; 2278 2279 softc = (struct sa_softc *)periph->softc; 2280 markswanted = samarkswanted(periph); 2281 2282 if (markswanted > 0) { 2283 error = sawritefilemarks(periph, markswanted, FALSE); 2284 } else { 2285 error = 0; 2286 } 2287 return (error); 2288 } 2289 2290 static int 2291 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2292 { 2293 static const char *toobig = 2294 "%d-byte tape record bigger than supplied buffer\n"; 2295 struct cam_periph *periph; 2296 struct sa_softc *softc; 2297 struct ccb_scsiio *csio; 2298 struct scsi_sense_data *sense; 2299 u_int32_t resid = 0; 2300 int32_t info = 0; 2301 cam_status status; 2302 int error_code, sense_key, asc, ascq, error, aqvalid; 2303 2304 periph = xpt_path_periph(ccb->ccb_h.path); 2305 softc = (struct sa_softc *)periph->softc; 2306 csio = &ccb->csio; 2307 sense = &csio->sense_data; 2308 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2309 aqvalid = sense->extra_len >= 6; 2310 error = 0; 2311 2312 status = csio->ccb_h.status & CAM_STATUS_MASK; 2313 2314 /* 2315 * Calculate/latch up, any residuals... We do this in a funny 2-step 2316 * so we can print stuff here if we have CAM_DEBUG enabled for this 2317 * unit. 2318 */ 2319 if (status == CAM_SCSI_STATUS_ERROR) { 2320 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2321 info = (int32_t) scsi_4btoul(sense->info); 2322 resid = info; 2323 if ((softc->flags & SA_FLAG_FIXED) != 0) 2324 resid *= softc->media_blksize; 2325 } else { 2326 resid = csio->dxfer_len; 2327 info = resid; 2328 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2329 if (softc->media_blksize) 2330 info /= softc->media_blksize; 2331 } 2332 } 2333 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2334 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2335 sizeof (struct scsi_sense_data)); 2336 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2337 (int) csio->cdb_len); 2338 softc->last_io_resid = resid; 2339 softc->last_resid_was_io = 1; 2340 } else { 2341 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2342 sizeof (struct scsi_sense_data)); 2343 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2344 (int) csio->cdb_len); 2345 softc->last_ctl_resid = resid; 2346 softc->last_resid_was_io = 0; 2347 } 2348 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2349 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2350 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2351 sense_key, asc, ascq, status, 2352 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2353 } else { 2354 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2355 ("Cam Status 0x%x\n", status)); 2356 } 2357 2358 switch (status) { 2359 case CAM_REQ_CMP: 2360 return (0); 2361 case CAM_SCSI_STATUS_ERROR: 2362 /* 2363 * If a read/write command, we handle it here. 2364 */ 2365 if (CCB_Type(csio) != SA_CCB_WAITING) { 2366 break; 2367 } 2368 /* 2369 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2370 * on a non read/write command, we assume it's not an error 2371 * and propagate the residule and return. 2372 */ 2373 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2374 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2375 csio->resid = resid; 2376 QFRLS(ccb); 2377 return (0); 2378 } 2379 /* 2380 * Otherwise, we let the common code handle this. 2381 */ 2382 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2383 2384 /* 2385 * XXX: To Be Fixed 2386 * We cannot depend upon CAM honoring retry counts for these. 2387 */ 2388 case CAM_SCSI_BUS_RESET: 2389 case CAM_BDR_SENT: 2390 if (ccb->ccb_h.retry_count <= 0) { 2391 return (EIO); 2392 break; 2393 } 2394 /* FALLTHROUGH */ 2395 default: 2396 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2397 } 2398 2399 /* 2400 * Handle filemark, end of tape, mismatched record sizes.... 2401 * From this point out, we're only handling read/write cases. 2402 * Handle writes && reads differently. 2403 */ 2404 2405 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2406 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2407 csio->resid = resid; 2408 error = ENOSPC; 2409 } else if (sense->flags & SSD_EOM) { 2410 softc->flags |= SA_FLAG_EOM_PENDING; 2411 /* 2412 * Grotesque as it seems, the few times 2413 * I've actually seen a non-zero resid, 2414 * the tape drive actually lied and had 2415 * writtent all the data!. 2416 */ 2417 csio->resid = 0; 2418 } 2419 } else { 2420 csio->resid = resid; 2421 if (sense_key == SSD_KEY_BLANK_CHECK) { 2422 if (softc->quirks & SA_QUIRK_1FM) { 2423 error = 0; 2424 softc->flags |= SA_FLAG_EOM_PENDING; 2425 } else { 2426 error = EIO; 2427 } 2428 } else if (sense->flags & SSD_FILEMARK) { 2429 if (softc->flags & SA_FLAG_FIXED) { 2430 error = -1; 2431 softc->flags |= SA_FLAG_EOF_PENDING; 2432 } 2433 /* 2434 * Unconditionally, if we detected a filemark on a read, 2435 * mark that we've run moved a file ahead. 2436 */ 2437 if (softc->fileno != (daddr_t) -1) { 2438 softc->fileno++; 2439 softc->blkno = 0; 2440 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2441 } 2442 } 2443 } 2444 2445 /* 2446 * Incorrect Length usually applies to read, but can apply to writes. 2447 */ 2448 if (error == 0 && (sense->flags & SSD_ILI)) { 2449 if (info < 0) { 2450 xpt_print_path(csio->ccb_h.path); 2451 printf(toobig, csio->dxfer_len - info); 2452 csio->resid = csio->dxfer_len; 2453 error = EIO; 2454 } else { 2455 csio->resid = resid; 2456 if (softc->flags & SA_FLAG_FIXED) { 2457 softc->flags |= SA_FLAG_EIO_PENDING; 2458 } 2459 /* 2460 * Bump the block number if we hadn't seen a filemark. 2461 * Do this independent of errors (we've moved anyway). 2462 */ 2463 if ((sense->flags & SSD_FILEMARK) == 0) { 2464 if (softc->blkno != (daddr_t) -1) { 2465 softc->blkno++; 2466 csio->ccb_h.ccb_pflags |= 2467 SA_POSITION_UPDATED; 2468 } 2469 } 2470 } 2471 } 2472 2473 if (error <= 0) { 2474 /* 2475 * Unfreeze the queue if frozen as we're not returning anything 2476 * to our waiters that would indicate an I/O error has occurred 2477 * (yet). 2478 */ 2479 QFRLS(ccb); 2480 error = 0; 2481 } 2482 return (error); 2483 } 2484 2485 static int 2486 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2487 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2488 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2489 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2490 sa_comp_t *tcs) 2491 { 2492 union ccb *ccb; 2493 void *mode_buffer; 2494 struct scsi_mode_header_6 *mode_hdr; 2495 struct scsi_mode_blk_desc *mode_blk; 2496 int mode_buffer_len; 2497 struct sa_softc *softc; 2498 u_int8_t cpage; 2499 int error; 2500 cam_status status; 2501 2502 softc = (struct sa_softc *)periph->softc; 2503 ccb = cam_periph_getccb(periph, 1); 2504 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2505 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2506 else 2507 cpage = SA_DATA_COMPRESSION_PAGE; 2508 2509 retry: 2510 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2511 2512 if (params_to_get & SA_PARAM_COMPRESSION) { 2513 if (softc->quirks & SA_QUIRK_NOCOMP) { 2514 *comp_supported = FALSE; 2515 params_to_get &= ~SA_PARAM_COMPRESSION; 2516 } else 2517 mode_buffer_len += sizeof (sa_comp_t); 2518 } 2519 2520 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2521 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2522 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2523 2524 /* it is safe to retry this */ 2525 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2526 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2527 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2528 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2529 2530 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2531 &softc->device_stats); 2532 QFRLS(ccb); 2533 2534 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2535 2536 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2537 /* 2538 * Hmm. Let's see if we can try another page... 2539 * If we've already done that, give up on compression 2540 * for this device and remember this for the future 2541 * and attempt the request without asking for compression 2542 * info. 2543 */ 2544 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2545 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2546 goto retry; 2547 } 2548 softc->quirks |= SA_QUIRK_NOCOMP; 2549 free(mode_buffer, M_TEMP); 2550 goto retry; 2551 } else if (status == CAM_SCSI_STATUS_ERROR) { 2552 /* Tell the user about the fatal error. */ 2553 scsi_sense_print(&ccb->csio); 2554 goto sagetparamsexit; 2555 } 2556 2557 /* 2558 * If the user only wants the compression information, and 2559 * the device doesn't send back the block descriptor, it's 2560 * no big deal. If the user wants more than just 2561 * compression, though, and the device doesn't pass back the 2562 * block descriptor, we need to send another mode sense to 2563 * get the block descriptor. 2564 */ 2565 if ((mode_hdr->blk_desc_len == 0) && 2566 (params_to_get & SA_PARAM_COMPRESSION) && 2567 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2568 2569 /* 2570 * Decrease the mode buffer length by the size of 2571 * the compression page, to make sure the data 2572 * there doesn't get overwritten. 2573 */ 2574 mode_buffer_len -= sizeof (sa_comp_t); 2575 2576 /* 2577 * Now move the compression page that we presumably 2578 * got back down the memory chunk a little bit so 2579 * it doesn't get spammed. 2580 */ 2581 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2582 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2583 2584 /* 2585 * Now, we issue another mode sense and just ask 2586 * for the block descriptor, etc. 2587 */ 2588 2589 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2590 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2591 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2592 SCSIOP_TIMEOUT); 2593 2594 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2595 &softc->device_stats); 2596 QFRLS(ccb); 2597 2598 if (error != 0) 2599 goto sagetparamsexit; 2600 } 2601 2602 if (params_to_get & SA_PARAM_BLOCKSIZE) 2603 *blocksize = scsi_3btoul(mode_blk->blklen); 2604 2605 if (params_to_get & SA_PARAM_NUMBLOCKS) 2606 *numblocks = scsi_3btoul(mode_blk->nblocks); 2607 2608 if (params_to_get & SA_PARAM_BUFF_MODE) 2609 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2610 2611 if (params_to_get & SA_PARAM_DENSITY) 2612 *density = mode_blk->density; 2613 2614 if (params_to_get & SA_PARAM_WP) 2615 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2616 2617 if (params_to_get & SA_PARAM_SPEED) 2618 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2619 2620 if (params_to_get & SA_PARAM_COMPRESSION) { 2621 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2622 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2623 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2624 *comp_supported = 2625 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2626 *comp_enabled = 2627 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2628 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2629 } else { 2630 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2631 /* 2632 * We don't really know whether this device supports 2633 * Data Compression if the the algorithm field is 2634 * zero. Just say we do. 2635 */ 2636 *comp_supported = TRUE; 2637 *comp_enabled = 2638 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2639 *comp_algorithm = cp->sel_comp_alg; 2640 } 2641 if (tcs != NULL) 2642 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2643 } 2644 2645 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2646 int idx; 2647 char *xyz = mode_buffer; 2648 xpt_print_path(periph->path); 2649 printf("Mode Sense Data="); 2650 for (idx = 0; idx < mode_buffer_len; idx++) 2651 printf(" 0x%02x", xyz[idx] & 0xff); 2652 printf("\n"); 2653 } 2654 2655 sagetparamsexit: 2656 2657 xpt_release_ccb(ccb); 2658 free(mode_buffer, M_TEMP); 2659 return (error); 2660 } 2661 2662 /* 2663 * The purpose of this function is to set one of four different parameters 2664 * for a tape drive: 2665 * - blocksize 2666 * - density 2667 * - compression / compression algorithm 2668 * - buffering mode 2669 * 2670 * The assumption is that this will be called from saioctl(), and therefore 2671 * from a process context. Thus the waiting malloc calls below. If that 2672 * assumption ever changes, the malloc calls should be changed to be 2673 * NOWAIT mallocs. 2674 * 2675 * Any or all of the four parameters may be set when this function is 2676 * called. It should handle setting more than one parameter at once. 2677 */ 2678 static int 2679 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2680 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2681 u_int32_t sense_flags) 2682 { 2683 struct sa_softc *softc; 2684 u_int32_t current_blocksize; 2685 u_int32_t current_calg; 2686 u_int8_t current_density; 2687 u_int8_t current_speed; 2688 int comp_enabled, comp_supported; 2689 void *mode_buffer; 2690 int mode_buffer_len; 2691 struct scsi_mode_header_6 *mode_hdr; 2692 struct scsi_mode_blk_desc *mode_blk; 2693 sa_comp_t *ccomp, *cpage; 2694 int buff_mode; 2695 union ccb *ccb = NULL; 2696 int error; 2697 2698 softc = (struct sa_softc *)periph->softc; 2699 2700 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2701 2702 /* 2703 * Since it doesn't make sense to set the number of blocks, or 2704 * write protection, we won't try to get the current value. We 2705 * always want to get the blocksize, so we can set it back to the 2706 * proper value. 2707 */ 2708 error = sagetparams(periph, 2709 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2710 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2711 ¤t_speed, &comp_supported, &comp_enabled, 2712 ¤t_calg, ccomp); 2713 2714 if (error != 0) { 2715 free(ccomp, M_TEMP); 2716 return (error); 2717 } 2718 2719 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2720 if (params_to_set & SA_PARAM_COMPRESSION) 2721 mode_buffer_len += sizeof (sa_comp_t); 2722 2723 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2724 2725 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2726 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2727 2728 ccb = cam_periph_getccb(periph, 1); 2729 2730 retry: 2731 2732 if (params_to_set & SA_PARAM_COMPRESSION) { 2733 if (mode_blk) { 2734 cpage = (sa_comp_t *)&mode_blk[1]; 2735 } else { 2736 cpage = (sa_comp_t *)&mode_hdr[1]; 2737 } 2738 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2739 cpage->hdr.pagecode &= ~0x80; 2740 } else 2741 cpage = NULL; 2742 2743 /* 2744 * If the caller wants us to set the blocksize, use the one they 2745 * pass in. Otherwise, use the blocksize we got back from the 2746 * mode select above. 2747 */ 2748 if (mode_blk) { 2749 if (params_to_set & SA_PARAM_BLOCKSIZE) 2750 scsi_ulto3b(blocksize, mode_blk->blklen); 2751 else 2752 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2753 2754 /* 2755 * Set density if requested, else preserve old density. 2756 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2757 * devices, else density we've latched up in our softc. 2758 */ 2759 if (params_to_set & SA_PARAM_DENSITY) { 2760 mode_blk->density = density; 2761 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2762 mode_blk->density = SCSI_SAME_DENSITY; 2763 } else { 2764 mode_blk->density = softc->media_density; 2765 } 2766 } 2767 2768 /* 2769 * For mode selects, these two fields must be zero. 2770 */ 2771 mode_hdr->data_length = 0; 2772 mode_hdr->medium_type = 0; 2773 2774 /* set the speed to the current value */ 2775 mode_hdr->dev_spec = current_speed; 2776 2777 /* set single-initiator buffering mode */ 2778 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2779 2780 if (mode_blk) 2781 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2782 else 2783 mode_hdr->blk_desc_len = 0; 2784 2785 /* 2786 * First, if the user wants us to set the compression algorithm or 2787 * just turn compression on, check to make sure that this drive 2788 * supports compression. 2789 */ 2790 if (params_to_set & SA_PARAM_COMPRESSION) { 2791 /* 2792 * If the compression algorithm is 0, disable compression. 2793 * If the compression algorithm is non-zero, enable 2794 * compression and set the compression type to the 2795 * specified compression algorithm, unless the algorithm is 2796 * MT_COMP_ENABLE. In that case, we look at the 2797 * compression algorithm that is currently set and if it is 2798 * non-zero, we leave it as-is. If it is zero, and we have 2799 * saved a compression algorithm from a time when 2800 * compression was enabled before, set the compression to 2801 * the saved value. 2802 */ 2803 switch (ccomp->hdr.pagecode & ~0x80) { 2804 case SA_DATA_COMPRESSION_PAGE: 2805 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2806 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2807 if (calg == 0) { 2808 /* 2809 * Disable compression, but leave the 2810 * decompression and the capability bit 2811 * alone. 2812 */ 2813 dcp->dce_and_dcc = SA_DCP_DCC; 2814 dcp->dde_and_red |= SA_DCP_DDE; 2815 break; 2816 } 2817 /* enable compression && decompression */ 2818 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2819 dcp->dde_and_red |= SA_DCP_DDE; 2820 /* 2821 * If there, use compression algorithm from caller. 2822 * Otherwise, if there's a saved compression algorithm 2823 * and there is no current algorithm, use the saved 2824 * algorithm. Else parrot back what we got and hope 2825 * for the best. 2826 */ 2827 if (calg != MT_COMP_ENABLE) { 2828 scsi_ulto4b(calg, dcp->comp_algorithm); 2829 scsi_ulto4b(calg, dcp->decomp_algorithm); 2830 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2831 softc->saved_comp_algorithm != 0) { 2832 scsi_ulto4b(softc->saved_comp_algorithm, 2833 dcp->comp_algorithm); 2834 scsi_ulto4b(softc->saved_comp_algorithm, 2835 dcp->decomp_algorithm); 2836 } 2837 break; 2838 } 2839 case SA_DEVICE_CONFIGURATION_PAGE: 2840 { 2841 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2842 if (calg == 0) { 2843 dcp->sel_comp_alg = SA_COMP_NONE; 2844 break; 2845 } 2846 if (calg != MT_COMP_ENABLE) { 2847 dcp->sel_comp_alg = calg; 2848 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2849 softc->saved_comp_algorithm != 0) { 2850 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2851 } 2852 break; 2853 } 2854 default: 2855 /* 2856 * The drive doesn't seem to support compression, 2857 * so turn off the set compression bit. 2858 */ 2859 params_to_set &= ~SA_PARAM_COMPRESSION; 2860 xpt_print_path(periph->path); 2861 printf("device does not seem to support compression\n"); 2862 2863 /* 2864 * If that was the only thing the user wanted us to set, 2865 * clean up allocated resources and return with 2866 * 'operation not supported'. 2867 */ 2868 if (params_to_set == SA_PARAM_NONE) { 2869 free(mode_buffer, M_TEMP); 2870 xpt_release_ccb(ccb); 2871 return (ENODEV); 2872 } 2873 2874 /* 2875 * That wasn't the only thing the user wanted us to set. 2876 * So, decrease the stated mode buffer length by the 2877 * size of the compression mode page. 2878 */ 2879 mode_buffer_len -= sizeof(sa_comp_t); 2880 } 2881 } 2882 2883 /* It is safe to retry this operation */ 2884 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2885 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2886 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2887 2888 error = cam_periph_runccb(ccb, saerror, 0, 2889 sense_flags, &softc->device_stats); 2890 QFRLS(ccb); 2891 2892 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2893 int idx; 2894 char *xyz = mode_buffer; 2895 xpt_print_path(periph->path); 2896 printf("Err%d, Mode Select Data=", error); 2897 for (idx = 0; idx < mode_buffer_len; idx++) 2898 printf(" 0x%02x", xyz[idx] & 0xff); 2899 printf("\n"); 2900 } 2901 2902 2903 if (error) { 2904 /* 2905 * If we can, try without setting density/blocksize. 2906 */ 2907 if (mode_blk) { 2908 if ((params_to_set & 2909 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2910 mode_blk = NULL; 2911 goto retry; 2912 } 2913 } else { 2914 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2915 cpage = (sa_comp_t *)&mode_blk[1]; 2916 } 2917 2918 /* 2919 * If we were setting the blocksize, and that failed, we 2920 * want to set it to its original value. If we weren't 2921 * setting the blocksize, we don't want to change it. 2922 */ 2923 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2924 2925 /* 2926 * Set density if requested, else preserve old density. 2927 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2928 * devices, else density we've latched up in our softc. 2929 */ 2930 if (params_to_set & SA_PARAM_DENSITY) { 2931 mode_blk->density = current_density; 2932 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2933 mode_blk->density = SCSI_SAME_DENSITY; 2934 } else { 2935 mode_blk->density = softc->media_density; 2936 } 2937 2938 if (params_to_set & SA_PARAM_COMPRESSION) 2939 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2940 2941 /* 2942 * The retry count is the only CCB field that might have been 2943 * changed that we care about, so reset it back to 1. 2944 */ 2945 ccb->ccb_h.retry_count = 1; 2946 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2947 &softc->device_stats); 2948 QFRLS(ccb); 2949 } 2950 2951 xpt_release_ccb(ccb); 2952 2953 if (ccomp != NULL) 2954 free(ccomp, M_TEMP); 2955 2956 if (params_to_set & SA_PARAM_COMPRESSION) { 2957 if (error) { 2958 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2959 /* 2960 * Even if we get an error setting compression, 2961 * do not say that we don't support it. We could 2962 * have been wrong, or it may be media specific. 2963 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2964 */ 2965 softc->saved_comp_algorithm = softc->comp_algorithm; 2966 softc->comp_algorithm = 0; 2967 } else { 2968 softc->flags |= SA_FLAG_COMP_ENABLED; 2969 softc->comp_algorithm = calg; 2970 } 2971 } 2972 2973 free(mode_buffer, M_TEMP); 2974 return (error); 2975 } 2976 2977 static void 2978 saprevent(struct cam_periph *periph, int action) 2979 { 2980 struct sa_softc *softc; 2981 union ccb *ccb; 2982 int error, sf; 2983 2984 softc = (struct sa_softc *)periph->softc; 2985 2986 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2987 return; 2988 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2989 return; 2990 2991 /* 2992 * We can be quiet about illegal requests. 2993 */ 2994 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2995 sf = 0; 2996 } else 2997 sf = SF_QUIET_IR; 2998 2999 ccb = cam_periph_getccb(periph, 1); 3000 3001 /* It is safe to retry this operation */ 3002 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3003 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3004 3005 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 3006 QFRLS(ccb); 3007 if (error == 0) { 3008 if (action == PR_ALLOW) 3009 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3010 else 3011 softc->flags |= SA_FLAG_TAPE_LOCKED; 3012 } 3013 3014 xpt_release_ccb(ccb); 3015 } 3016 3017 static int 3018 sarewind(struct cam_periph *periph) 3019 { 3020 union ccb *ccb; 3021 struct sa_softc *softc; 3022 int error; 3023 3024 softc = (struct sa_softc *)periph->softc; 3025 3026 ccb = cam_periph_getccb(periph, 1); 3027 3028 /* It is safe to retry this operation */ 3029 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3030 SSD_FULL_SIZE, REWIND_TIMEOUT); 3031 3032 softc->dsreg = MTIO_DSREG_REW; 3033 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3034 softc->dsreg = MTIO_DSREG_REST; 3035 3036 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3037 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3038 3039 xpt_release_ccb(ccb); 3040 if (error == 0) 3041 softc->fileno = softc->blkno = (daddr_t) 0; 3042 else 3043 softc->fileno = softc->blkno = (daddr_t) -1; 3044 return (error); 3045 } 3046 3047 static int 3048 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3049 { 3050 union ccb *ccb; 3051 struct sa_softc *softc; 3052 int error; 3053 3054 softc = (struct sa_softc *)periph->softc; 3055 3056 ccb = cam_periph_getccb(periph, 1); 3057 3058 /* This cannot be retried */ 3059 3060 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3061 SSD_FULL_SIZE, SPACE_TIMEOUT); 3062 3063 /* 3064 * Clear residual because we will be using it. 3065 */ 3066 softc->last_ctl_resid = 0; 3067 3068 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3069 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3070 softc->dsreg = MTIO_DSREG_REST; 3071 3072 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3073 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3074 3075 xpt_release_ccb(ccb); 3076 3077 /* 3078 * If a spacing operation has failed, we need to invalidate 3079 * this mount. 3080 * 3081 * If the spacing operation was setmarks or to end of recorded data, 3082 * we no longer know our relative position. 3083 * 3084 * If the spacing operations was spacing files in reverse, we 3085 * take account of the residual, but still check against less 3086 * than zero- if we've gone negative, we must have hit BOT. 3087 * 3088 * If the spacing operations was spacing records in reverse and 3089 * we have a residual, we've either hit BOT or hit a filemark. 3090 * In the former case, we know our new record number (0). In 3091 * the latter case, we have absolutely no idea what the real 3092 * record number is- we've stopped between the end of the last 3093 * record in the previous file and the filemark that stopped 3094 * our spacing backwards. 3095 */ 3096 if (error) { 3097 softc->fileno = softc->blkno = (daddr_t) -1; 3098 } else if (code == SS_SETMARKS || code == SS_EOD) { 3099 softc->fileno = softc->blkno = (daddr_t) -1; 3100 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3101 softc->fileno += (count - softc->last_ctl_resid); 3102 if (softc->fileno < 0) /* we must of hit BOT */ 3103 softc->fileno = 0; 3104 softc->blkno = 0; 3105 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3106 softc->blkno += (count - softc->last_ctl_resid); 3107 if (count < 0) { 3108 if (softc->last_ctl_resid || softc->blkno < 0) { 3109 if (softc->fileno == 0) { 3110 softc->blkno = 0; 3111 } else { 3112 softc->blkno = (daddr_t) -1; 3113 } 3114 } 3115 } 3116 } 3117 return (error); 3118 } 3119 3120 static int 3121 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3122 { 3123 union ccb *ccb; 3124 struct sa_softc *softc; 3125 int error, nwm = 0; 3126 3127 softc = (struct sa_softc *)periph->softc; 3128 3129 ccb = cam_periph_getccb(periph, 1); 3130 /* 3131 * Clear residual because we will be using it. 3132 */ 3133 softc->last_ctl_resid = 0; 3134 3135 softc->dsreg = MTIO_DSREG_FMK; 3136 /* this *must* not be retried */ 3137 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3138 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3139 softc->dsreg = MTIO_DSREG_REST; 3140 3141 3142 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3143 3144 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3145 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3146 3147 if (error == 0 && nmarks) { 3148 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3149 nwm = nmarks - softc->last_ctl_resid; 3150 softc->filemarks += nwm; 3151 } 3152 3153 xpt_release_ccb(ccb); 3154 3155 /* 3156 * Update relative positions (if we're doing that). 3157 */ 3158 if (error) { 3159 softc->fileno = softc->blkno = (daddr_t) -1; 3160 } else if (softc->fileno != (daddr_t) -1) { 3161 softc->fileno += nwm; 3162 softc->blkno = 0; 3163 } 3164 return (error); 3165 } 3166 3167 static int 3168 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3169 { 3170 struct scsi_tape_position_data loc; 3171 union ccb *ccb; 3172 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3173 int error; 3174 3175 /* 3176 * We try and flush any buffered writes here if we were writing 3177 * and we're trying to get hardware block position. It eats 3178 * up performance substantially, but I'm wary of drive firmware. 3179 * 3180 * I think that *logical* block position is probably okay- 3181 * but hardware block position might have to wait for data 3182 * to hit media to be valid. Caveat Emptor. 3183 */ 3184 3185 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3186 error = sawritefilemarks(periph, 0, 0); 3187 if (error && error != EACCES) 3188 return (error); 3189 } 3190 3191 ccb = cam_periph_getccb(periph, 1); 3192 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3193 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3194 softc->dsreg = MTIO_DSREG_RBSY; 3195 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3196 softc->dsreg = MTIO_DSREG_REST; 3197 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3198 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3199 3200 if (error == 0) { 3201 if (loc.flags & SA_RPOS_UNCERTAIN) { 3202 error = EINVAL; /* nothing is certain */ 3203 } else { 3204 *blkptr = scsi_4btoul(loc.firstblk); 3205 } 3206 } 3207 3208 xpt_release_ccb(ccb); 3209 return (error); 3210 } 3211 3212 static int 3213 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3214 { 3215 union ccb *ccb; 3216 struct sa_softc *softc; 3217 int error; 3218 3219 /* 3220 * We used to try and flush any buffered writes here. 3221 * Now we push this onto user applications to either 3222 * flush the pending writes themselves (via a zero count 3223 * WRITE FILEMARKS command) or they can trust their tape 3224 * drive to do this correctly for them. 3225 */ 3226 3227 softc = (struct sa_softc *)periph->softc; 3228 ccb = cam_periph_getccb(periph, 1); 3229 3230 3231 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3232 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3233 3234 3235 softc->dsreg = MTIO_DSREG_POS; 3236 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3237 softc->dsreg = MTIO_DSREG_REST; 3238 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3239 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3240 xpt_release_ccb(ccb); 3241 /* 3242 * Note relative file && block number position as now unknown. 3243 */ 3244 softc->fileno = softc->blkno = (daddr_t) -1; 3245 return (error); 3246 } 3247 3248 static int 3249 saretension(struct cam_periph *periph) 3250 { 3251 union ccb *ccb; 3252 struct sa_softc *softc; 3253 int error; 3254 3255 softc = (struct sa_softc *)periph->softc; 3256 3257 ccb = cam_periph_getccb(periph, 1); 3258 3259 /* It is safe to retry this operation */ 3260 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3261 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3262 3263 softc->dsreg = MTIO_DSREG_TEN; 3264 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3265 softc->dsreg = MTIO_DSREG_REST; 3266 3267 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3268 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3269 xpt_release_ccb(ccb); 3270 if (error == 0) 3271 softc->fileno = softc->blkno = (daddr_t) 0; 3272 else 3273 softc->fileno = softc->blkno = (daddr_t) -1; 3274 return (error); 3275 } 3276 3277 static int 3278 sareservereleaseunit(struct cam_periph *periph, int reserve) 3279 { 3280 union ccb *ccb; 3281 struct sa_softc *softc; 3282 int error; 3283 3284 softc = (struct sa_softc *)periph->softc; 3285 ccb = cam_periph_getccb(periph, 1); 3286 3287 /* It is safe to retry this operation */ 3288 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3289 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3290 softc->dsreg = MTIO_DSREG_RBSY; 3291 error = cam_periph_runccb(ccb, saerror, 0, 3292 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3293 softc->dsreg = MTIO_DSREG_REST; 3294 QFRLS(ccb); 3295 xpt_release_ccb(ccb); 3296 3297 /* 3298 * If the error was Illegal Request, then the device doesn't support 3299 * RESERVE/RELEASE. This is not an error. 3300 */ 3301 if (error == EINVAL) { 3302 error = 0; 3303 } 3304 3305 return (error); 3306 } 3307 3308 static int 3309 saloadunload(struct cam_periph *periph, int load) 3310 { 3311 union ccb *ccb; 3312 struct sa_softc *softc; 3313 int error; 3314 3315 softc = (struct sa_softc *)periph->softc; 3316 3317 ccb = cam_periph_getccb(periph, 1); 3318 3319 /* It is safe to retry this operation */ 3320 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3321 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3322 3323 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3324 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3325 softc->dsreg = MTIO_DSREG_REST; 3326 QFRLS(ccb); 3327 xpt_release_ccb(ccb); 3328 3329 if (error || load == 0) 3330 softc->fileno = softc->blkno = (daddr_t) -1; 3331 else if (error == 0) 3332 softc->fileno = softc->blkno = (daddr_t) 0; 3333 return (error); 3334 } 3335 3336 static int 3337 saerase(struct cam_periph *periph, int longerase) 3338 { 3339 3340 union ccb *ccb; 3341 struct sa_softc *softc; 3342 int error; 3343 3344 softc = (struct sa_softc *)periph->softc; 3345 3346 ccb = cam_periph_getccb(periph, 1); 3347 3348 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3349 SSD_FULL_SIZE, ERASE_TIMEOUT); 3350 3351 softc->dsreg = MTIO_DSREG_ZER; 3352 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3353 softc->dsreg = MTIO_DSREG_REST; 3354 3355 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3356 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3357 xpt_release_ccb(ccb); 3358 return (error); 3359 } 3360 3361 #endif /* _KERNEL */ 3362 3363 /* 3364 * Read tape block limits command. 3365 */ 3366 void 3367 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3368 void (*cbfcnp)(struct cam_periph *, union ccb *), 3369 u_int8_t tag_action, 3370 struct scsi_read_block_limits_data *rlimit_buf, 3371 u_int8_t sense_len, u_int32_t timeout) 3372 { 3373 struct scsi_read_block_limits *scsi_cmd; 3374 3375 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3376 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3377 sizeof(*scsi_cmd), timeout); 3378 3379 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3380 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3381 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3382 } 3383 3384 void 3385 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3386 void (*cbfcnp)(struct cam_periph *, union ccb *), 3387 u_int8_t tag_action, int readop, int sli, 3388 int fixed, u_int32_t length, u_int8_t *data_ptr, 3389 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3390 { 3391 struct scsi_sa_rw *scsi_cmd; 3392 3393 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3394 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3395 scsi_cmd->sli_fixed = 0; 3396 if (sli && readop) 3397 scsi_cmd->sli_fixed |= SAR_SLI; 3398 if (fixed) 3399 scsi_cmd->sli_fixed |= SARW_FIXED; 3400 scsi_ulto3b(length, scsi_cmd->length); 3401 scsi_cmd->control = 0; 3402 3403 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3404 tag_action, data_ptr, dxfer_len, sense_len, 3405 sizeof(*scsi_cmd), timeout); 3406 } 3407 3408 void 3409 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3410 void (*cbfcnp)(struct cam_periph *, union ccb *), 3411 u_int8_t tag_action, int immediate, int eot, 3412 int reten, int load, u_int8_t sense_len, 3413 u_int32_t timeout) 3414 { 3415 struct scsi_load_unload *scsi_cmd; 3416 3417 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3418 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3419 scsi_cmd->opcode = LOAD_UNLOAD; 3420 if (immediate) 3421 scsi_cmd->immediate = SLU_IMMED; 3422 if (eot) 3423 scsi_cmd->eot_reten_load |= SLU_EOT; 3424 if (reten) 3425 scsi_cmd->eot_reten_load |= SLU_RETEN; 3426 if (load) 3427 scsi_cmd->eot_reten_load |= SLU_LOAD; 3428 3429 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3430 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3431 } 3432 3433 void 3434 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3435 void (*cbfcnp)(struct cam_periph *, union ccb *), 3436 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3437 u_int32_t timeout) 3438 { 3439 struct scsi_rewind *scsi_cmd; 3440 3441 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3442 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3443 scsi_cmd->opcode = REWIND; 3444 if (immediate) 3445 scsi_cmd->immediate = SREW_IMMED; 3446 3447 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3448 0, sense_len, sizeof(*scsi_cmd), timeout); 3449 } 3450 3451 void 3452 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3453 void (*cbfcnp)(struct cam_periph *, union ccb *), 3454 u_int8_t tag_action, scsi_space_code code, 3455 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3456 { 3457 struct scsi_space *scsi_cmd; 3458 3459 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3460 scsi_cmd->opcode = SPACE; 3461 scsi_cmd->code = code; 3462 scsi_ulto3b(count, scsi_cmd->count); 3463 scsi_cmd->control = 0; 3464 3465 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3466 0, sense_len, sizeof(*scsi_cmd), timeout); 3467 } 3468 3469 void 3470 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3471 void (*cbfcnp)(struct cam_periph *, union ccb *), 3472 u_int8_t tag_action, int immediate, int setmark, 3473 u_int32_t num_marks, u_int8_t sense_len, 3474 u_int32_t timeout) 3475 { 3476 struct scsi_write_filemarks *scsi_cmd; 3477 3478 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3479 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3480 scsi_cmd->opcode = WRITE_FILEMARKS; 3481 if (immediate) 3482 scsi_cmd->byte2 |= SWFMRK_IMMED; 3483 if (setmark) 3484 scsi_cmd->byte2 |= SWFMRK_WSMK; 3485 3486 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3487 3488 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3489 0, sense_len, sizeof(*scsi_cmd), timeout); 3490 } 3491 3492 /* 3493 * The reserve and release unit commands differ only by their opcodes. 3494 */ 3495 void 3496 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3497 void (*cbfcnp)(struct cam_periph *, union ccb *), 3498 u_int8_t tag_action, int third_party, 3499 int third_party_id, u_int8_t sense_len, 3500 u_int32_t timeout, int reserve) 3501 { 3502 struct scsi_reserve_release_unit *scsi_cmd; 3503 3504 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3505 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3506 3507 if (reserve) 3508 scsi_cmd->opcode = RESERVE_UNIT; 3509 else 3510 scsi_cmd->opcode = RELEASE_UNIT; 3511 3512 if (third_party) { 3513 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3514 scsi_cmd->lun_thirdparty |= 3515 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3516 } 3517 3518 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3519 0, sense_len, sizeof(*scsi_cmd), timeout); 3520 } 3521 3522 void 3523 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3524 void (*cbfcnp)(struct cam_periph *, union ccb *), 3525 u_int8_t tag_action, int immediate, int long_erase, 3526 u_int8_t sense_len, u_int32_t timeout) 3527 { 3528 struct scsi_erase *scsi_cmd; 3529 3530 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3531 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3532 3533 scsi_cmd->opcode = ERASE; 3534 3535 if (immediate) 3536 scsi_cmd->lun_imm_long |= SE_IMMED; 3537 3538 if (long_erase) 3539 scsi_cmd->lun_imm_long |= SE_LONG; 3540 3541 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3542 0, sense_len, sizeof(*scsi_cmd), timeout); 3543 } 3544 3545 /* 3546 * Read Tape Position command. 3547 */ 3548 void 3549 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3550 void (*cbfcnp)(struct cam_periph *, union ccb *), 3551 u_int8_t tag_action, int hardsoft, 3552 struct scsi_tape_position_data *sbp, 3553 u_int8_t sense_len, u_int32_t timeout) 3554 { 3555 struct scsi_tape_read_position *scmd; 3556 3557 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3558 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3559 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3560 bzero(scmd, sizeof(*scmd)); 3561 scmd->opcode = READ_POSITION; 3562 scmd->byte1 = hardsoft; 3563 } 3564 3565 /* 3566 * Set Tape Position command. 3567 */ 3568 void 3569 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3570 void (*cbfcnp)(struct cam_periph *, union ccb *), 3571 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3572 u_int8_t sense_len, u_int32_t timeout) 3573 { 3574 struct scsi_tape_locate *scmd; 3575 3576 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3577 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3578 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3579 bzero(scmd, sizeof(*scmd)); 3580 scmd->opcode = LOCATE; 3581 if (hardsoft) 3582 scmd->byte1 |= SA_SPOS_BT; 3583 scsi_ulto4b(blkno, scmd->blkaddr); 3584 } 3585