1 /* 2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $ 3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.8 2003/11/21 22:46:13 dillon Exp $ 4 * 5 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 6 * 7 * Copyright (c) 1999, 2000 Matthew Jacob 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33 #include <sys/param.h> 34 #include <sys/queue.h> 35 #ifdef _KERNEL 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #endif 39 #include <sys/types.h> 40 #ifdef _KERNEL 41 #include <sys/buf.h> 42 #include <sys/malloc.h> 43 #endif 44 #include <sys/mtio.h> 45 #include <sys/conf.h> 46 #ifdef _KERNEL 47 #include <sys/proc.h> 48 #include <sys/buf2.h> 49 #endif 50 #include <sys/devicestat.h> 51 #include <machine/limits.h> 52 53 #ifndef _KERNEL 54 #include <stdio.h> 55 #include <string.h> 56 #endif 57 58 #include "../cam.h" 59 #include "../cam_ccb.h" 60 #include "../cam_extend.h" 61 #include "../cam_periph.h" 62 #include "../cam_xpt_periph.h" 63 #include "../cam_debug.h" 64 65 #include "scsi_all.h" 66 #include "scsi_message.h" 67 #include "scsi_sa.h" 68 69 #ifdef _KERNEL 70 71 #include <opt_sa.h> 72 73 #ifndef SA_IO_TIMEOUT 74 #define SA_IO_TIMEOUT 4 75 #endif 76 #ifndef SA_SPACE_TIMEOUT 77 #define SA_SPACE_TIMEOUT 1 * 60 78 #endif 79 #ifndef SA_REWIND_TIMEOUT 80 #define SA_REWIND_TIMEOUT 2 * 60 81 #endif 82 #ifndef SA_ERASE_TIMEOUT 83 #define SA_ERASE_TIMEOUT 4 * 60 84 #endif 85 86 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 87 88 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 89 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 90 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 91 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 92 93 /* 94 * Additional options that can be set for config: SA_1FM_AT_EOT 95 */ 96 97 #ifndef UNUSED_PARAMETER 98 #define UNUSED_PARAMETER(x) x = x 99 #endif 100 101 #define QFRLS(ccb) \ 102 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 103 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 104 105 /* 106 * Driver states 107 */ 108 109 110 typedef enum { 111 SA_STATE_NORMAL, SA_STATE_ABNORMAL 112 } sa_state; 113 114 #define ccb_pflags ppriv_field0 115 #define ccb_bp ppriv_ptr1 116 117 #define SA_CCB_BUFFER_IO 0x0 118 #define SA_CCB_WAITING 0x1 119 #define SA_CCB_TYPEMASK 0x1 120 #define SA_POSITION_UPDATED 0x2 121 122 #define Set_CCB_Type(x, type) \ 123 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 124 x->ccb_h.ccb_pflags |= type 125 126 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 127 128 129 130 typedef enum { 131 SA_FLAG_OPEN = 0x0001, 132 SA_FLAG_FIXED = 0x0002, 133 SA_FLAG_TAPE_LOCKED = 0x0004, 134 SA_FLAG_TAPE_MOUNTED = 0x0008, 135 SA_FLAG_TAPE_WP = 0x0010, 136 SA_FLAG_TAPE_WRITTEN = 0x0020, 137 SA_FLAG_EOM_PENDING = 0x0040, 138 SA_FLAG_EIO_PENDING = 0x0080, 139 SA_FLAG_EOF_PENDING = 0x0100, 140 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 141 SA_FLAG_EOF_PENDING), 142 SA_FLAG_INVALID = 0x0200, 143 SA_FLAG_COMP_ENABLED = 0x0400, 144 SA_FLAG_COMP_SUPP = 0x0800, 145 SA_FLAG_COMP_UNSUPP = 0x1000, 146 SA_FLAG_TAPE_FROZEN = 0x2000 147 } sa_flags; 148 149 typedef enum { 150 SA_MODE_REWIND = 0x00, 151 SA_MODE_NOREWIND = 0x01, 152 SA_MODE_OFFLINE = 0x02 153 } sa_mode; 154 155 typedef enum { 156 SA_PARAM_NONE = 0x00, 157 SA_PARAM_BLOCKSIZE = 0x01, 158 SA_PARAM_DENSITY = 0x02, 159 SA_PARAM_COMPRESSION = 0x04, 160 SA_PARAM_BUFF_MODE = 0x08, 161 SA_PARAM_NUMBLOCKS = 0x10, 162 SA_PARAM_WP = 0x20, 163 SA_PARAM_SPEED = 0x40, 164 SA_PARAM_ALL = 0x7f 165 } sa_params; 166 167 typedef enum { 168 SA_QUIRK_NONE = 0x00, 169 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 170 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 171 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 172 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 173 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 174 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 175 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 176 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 177 } sa_quirks; 178 179 /* units are bits 4-7, 16-21 (1024 units) */ 180 #define SAUNIT(DEV) \ 181 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 182 183 #define SAMODE(z) ((minor(z) & 0x3)) 184 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 185 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 186 187 #define SA_NOT_CTLDEV 0 188 #define SA_CTLDEV 1 189 190 #define SA_ATYPE_R 0 191 #define SA_ATYPE_NR 1 192 #define SA_ATYPE_ER 2 193 194 #define SAMINOR(ctl, unit, mode, access) \ 195 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 196 (mode << 0x2) | (access & 0x3)) 197 198 #define SA_NUM_MODES 4 199 struct sa_devs { 200 dev_t ctl_dev; 201 struct sa_mode_devs { 202 dev_t r_dev; 203 dev_t nr_dev; 204 dev_t er_dev; 205 } mode_devs[SA_NUM_MODES]; 206 dev_t r_dev; 207 dev_t nr_dev; 208 dev_t er_dev; 209 }; 210 211 struct sa_softc { 212 sa_state state; 213 sa_flags flags; 214 sa_quirks quirks; 215 struct buf_queue_head buf_queue; 216 int queue_count; 217 struct devstat device_stats; 218 struct sa_devs devs; 219 int blk_gran; 220 int blk_mask; 221 int blk_shift; 222 u_int32_t max_blk; 223 u_int32_t min_blk; 224 u_int32_t comp_algorithm; 225 u_int32_t saved_comp_algorithm; 226 u_int32_t media_blksize; 227 u_int32_t last_media_blksize; 228 u_int32_t media_numblks; 229 u_int8_t media_density; 230 u_int8_t speed; 231 u_int8_t scsi_rev; 232 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 233 int buffer_mode; 234 int filemarks; 235 union ccb saved_ccb; 236 int last_resid_was_io; 237 238 /* 239 * Relative to BOT Location. 240 */ 241 daddr_t fileno; 242 daddr_t blkno; 243 244 /* 245 * Latched Error Info 246 */ 247 struct { 248 struct scsi_sense_data _last_io_sense; 249 u_int32_t _last_io_resid; 250 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 251 struct scsi_sense_data _last_ctl_sense; 252 u_int32_t _last_ctl_resid; 253 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 254 #define last_io_sense errinfo._last_io_sense 255 #define last_io_resid errinfo._last_io_resid 256 #define last_io_cdb errinfo._last_io_cdb 257 #define last_ctl_sense errinfo._last_ctl_sense 258 #define last_ctl_resid errinfo._last_ctl_resid 259 #define last_ctl_cdb errinfo._last_ctl_cdb 260 } errinfo; 261 /* 262 * Misc other flags/state 263 */ 264 u_int32_t 265 : 31, 266 ctrl_mode : 1; /* control device open */ 267 }; 268 269 struct sa_quirk_entry { 270 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 271 sa_quirks quirks; /* specific quirk type */ 272 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 273 }; 274 275 static struct sa_quirk_entry sa_quirk_table[] = 276 { 277 { 278 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 279 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 280 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 284 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "Python*", "*"}, SA_QUIRK_NODREAD, 0 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 297 }, 298 { 299 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 300 "VIPER 2525 25462", "-011"}, 301 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 302 }, 303 { 304 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 305 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 306 }, 307 #if 0 308 { 309 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 310 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 311 }, 312 #endif 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 315 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 319 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 323 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 324 }, 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 327 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 331 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 332 }, 333 { 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 335 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 336 }, 337 { /* jreynold@primenet.com */ 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 339 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 340 }, 341 { /* mike@sentex.net */ 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 343 "STT20000*", "*"}, SA_QUIRK_1FM, 0 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 347 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 351 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 355 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 359 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 363 " SLR*", "*"}, SA_QUIRK_1FM, 0 364 }, 365 { 366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 367 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 368 }, 369 { 370 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 371 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 372 } 373 }; 374 375 static d_open_t saopen; 376 static d_close_t saclose; 377 static d_strategy_t sastrategy; 378 static d_ioctl_t saioctl; 379 static periph_init_t sainit; 380 static periph_ctor_t saregister; 381 static periph_oninv_t saoninvalidate; 382 static periph_dtor_t sacleanup; 383 static periph_start_t sastart; 384 static void saasync(void *callback_arg, u_int32_t code, 385 struct cam_path *path, void *arg); 386 static void sadone(struct cam_periph *periph, 387 union ccb *start_ccb); 388 static int saerror(union ccb *ccb, u_int32_t cam_flags, 389 u_int32_t sense_flags); 390 static int samarkswanted(struct cam_periph *); 391 static int sacheckeod(struct cam_periph *periph); 392 static int sagetparams(struct cam_periph *periph, 393 sa_params params_to_get, 394 u_int32_t *blocksize, u_int8_t *density, 395 u_int32_t *numblocks, int *buff_mode, 396 u_int8_t *write_protect, u_int8_t *speed, 397 int *comp_supported, int *comp_enabled, 398 u_int32_t *comp_algorithm, 399 sa_comp_t *comp_page); 400 static int sasetparams(struct cam_periph *periph, 401 sa_params params_to_set, 402 u_int32_t blocksize, u_int8_t density, 403 u_int32_t comp_algorithm, 404 u_int32_t sense_flags); 405 static void saprevent(struct cam_periph *periph, int action); 406 static int sarewind(struct cam_periph *periph); 407 static int saspace(struct cam_periph *periph, int count, 408 scsi_space_code code); 409 static int samount(struct cam_periph *, int, dev_t); 410 static int saretension(struct cam_periph *periph); 411 static int sareservereleaseunit(struct cam_periph *periph, 412 int reserve); 413 static int saloadunload(struct cam_periph *periph, int load); 414 static int saerase(struct cam_periph *periph, int longerase); 415 static int sawritefilemarks(struct cam_periph *periph, 416 int nmarks, int setmarks); 417 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 418 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 419 420 421 static struct periph_driver sadriver = 422 { 423 sainit, "sa", 424 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 425 }; 426 427 DATA_SET(periphdriver_set, sadriver); 428 429 /* For 2.2-stable support */ 430 #ifndef D_TAPE 431 #define D_TAPE 0 432 #endif 433 434 #define SA_CDEV_MAJOR 14 435 436 static struct cdevsw sa_cdevsw = { 437 /* name */ "sa", 438 /* maj */ SA_CDEV_MAJOR, 439 /* flags */ D_TAPE, 440 /* port */ NULL, 441 /* autoq */ 0, 442 443 /* open */ saopen, 444 /* close */ saclose, 445 /* read */ physread, 446 /* write */ physwrite, 447 /* ioctl */ saioctl, 448 /* poll */ nopoll, 449 /* mmap */ nommap, 450 /* strategy */ sastrategy, 451 /* dump */ nodump, 452 /* psize */ nopsize 453 }; 454 455 static struct extend_array *saperiphs; 456 457 static int 458 saopen(dev_t dev, int flags, int fmt, struct thread *td) 459 { 460 struct cam_periph *periph; 461 struct sa_softc *softc; 462 int unit; 463 int mode; 464 int density; 465 int error; 466 int s; 467 468 unit = SAUNIT(dev); 469 mode = SAMODE(dev); 470 density = SADENSITY(dev); 471 472 s = splsoftcam(); 473 periph = cam_extend_get(saperiphs, unit); 474 if (periph == NULL) { 475 (void) splx(s); 476 return (ENXIO); 477 } 478 softc = (struct sa_softc *)periph->softc; 479 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 480 splx(s); 481 return (error); 482 } 483 splx(s); 484 485 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 486 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 487 488 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 489 cam_periph_unlock(periph); 490 return (ENXIO); 491 } 492 if (SA_IS_CTRL(dev)) { 493 softc->ctrl_mode = 1; 494 cam_periph_unlock(periph); 495 return (0); 496 } 497 498 499 if (softc->flags & SA_FLAG_OPEN) { 500 error = EBUSY; 501 } else if (softc->flags & SA_FLAG_INVALID) { 502 error = ENXIO; 503 } else { 504 /* 505 * The function samount ensures media is loaded and ready. 506 * It also does a device RESERVE if the tape isn't yet mounted. 507 */ 508 error = samount(periph, flags, dev); 509 } 510 511 if (error) { 512 cam_periph_release(periph); 513 } else { 514 saprevent(periph, PR_PREVENT); 515 softc->flags |= SA_FLAG_OPEN; 516 } 517 cam_periph_unlock(periph); 518 return (error); 519 } 520 521 static int 522 saclose(dev_t dev, int flag, int fmt, struct thread *td) 523 { 524 struct cam_periph *periph; 525 struct sa_softc *softc; 526 int unit, mode, error, writing, tmp; 527 int closedbits = SA_FLAG_OPEN; 528 529 unit = SAUNIT(dev); 530 mode = SAMODE(dev); 531 periph = cam_extend_get(saperiphs, unit); 532 if (periph == NULL) 533 return (ENXIO); 534 535 softc = (struct sa_softc *)periph->softc; 536 537 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 538 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 539 540 541 if ((error = cam_periph_lock(periph, 0)) != 0) { 542 return (error); 543 } 544 545 if (SA_IS_CTRL(dev)) { 546 softc->ctrl_mode = 0; 547 cam_periph_release(periph); 548 cam_periph_unlock(periph); 549 return (0); 550 } 551 552 /* 553 * Were we writing the tape? 554 */ 555 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 556 557 /* 558 * See whether or not we need to write filemarks. If this 559 * fails, we probably have to assume we've lost tape 560 * position. 561 */ 562 error = sacheckeod(periph); 563 if (error) { 564 xpt_print_path(periph->path); 565 printf("failed to write terminating filemark(s)\n"); 566 softc->flags |= SA_FLAG_TAPE_FROZEN; 567 } 568 569 /* 570 * Whatever we end up doing, allow users to eject tapes from here on. 571 */ 572 saprevent(periph, PR_ALLOW); 573 574 /* 575 * Decide how to end... 576 */ 577 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 578 closedbits |= SA_FLAG_TAPE_FROZEN; 579 } else switch (mode) { 580 case SA_MODE_OFFLINE: 581 /* 582 * An 'offline' close is an unconditional release of 583 * frozen && mount conditions, irrespective of whether 584 * these operations succeeded. The reason for this is 585 * to allow at least some kind of programmatic way 586 * around our state getting all fouled up. If somebody 587 * issues an 'offline' command, that will be allowed 588 * to clear state. 589 */ 590 (void) sarewind(periph); 591 (void) saloadunload(periph, FALSE); 592 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 593 break; 594 case SA_MODE_REWIND: 595 /* 596 * If the rewind fails, return an error- if anyone cares, 597 * but not overwriting any previous error. 598 * 599 * We don't clear the notion of mounted here, but we do 600 * clear the notion of frozen if we successfully rewound. 601 */ 602 tmp = sarewind(periph); 603 if (tmp) { 604 if (error != 0) 605 error = tmp; 606 } else { 607 closedbits |= SA_FLAG_TAPE_FROZEN; 608 } 609 break; 610 case SA_MODE_NOREWIND: 611 /* 612 * If we're not rewinding/unloading the tape, find out 613 * whether we need to back up over one of two filemarks 614 * we wrote (if we wrote two filemarks) so that appends 615 * from this point on will be sane. 616 */ 617 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 618 tmp = saspace(periph, -1, SS_FILEMARKS); 619 if (tmp) { 620 xpt_print_path(periph->path); 621 printf("unable to backspace over one of double" 622 " filemarks at end of tape\n"); 623 xpt_print_path(periph->path); 624 printf("it is possible that this device" 625 " needs a SA_QUIRK_1FM quirk set for it\n"); 626 softc->flags |= SA_FLAG_TAPE_FROZEN; 627 } 628 } 629 break; 630 default: 631 xpt_print_path(periph->path); 632 panic("unknown mode 0x%x in saclose\n", mode); 633 /* NOTREACHED */ 634 break; 635 } 636 637 /* 638 * We wish to note here that there are no more filemarks to be written. 639 */ 640 softc->filemarks = 0; 641 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 642 643 /* 644 * And we are no longer open for business. 645 */ 646 softc->flags &= ~closedbits; 647 648 /* 649 * Inform users if tape state if frozen.... 650 */ 651 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 652 xpt_print_path(periph->path); 653 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 654 "command to clear this state.\n"); 655 } 656 657 /* release the device if it is no longer mounted */ 658 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 659 sareservereleaseunit(periph, FALSE); 660 661 cam_periph_unlock(periph); 662 cam_periph_release(periph); 663 664 return (error); 665 } 666 667 /* 668 * Actually translate the requested transfer into one the physical driver 669 * can understand. The transfer is described by a buf and will include 670 * only one physical transfer. 671 */ 672 static void 673 sastrategy(struct buf *bp) 674 { 675 struct cam_periph *periph; 676 struct sa_softc *softc; 677 u_int unit; 678 int s; 679 680 if (SA_IS_CTRL(bp->b_dev)) { 681 bp->b_error = EINVAL; 682 goto bad; 683 } 684 unit = SAUNIT(bp->b_dev); 685 periph = cam_extend_get(saperiphs, unit); 686 if (periph == NULL) { 687 bp->b_error = ENXIO; 688 goto bad; 689 } 690 softc = (struct sa_softc *)periph->softc; 691 692 s = splsoftcam(); 693 694 if (softc->flags & SA_FLAG_INVALID) { 695 splx(s); 696 bp->b_error = ENXIO; 697 goto bad; 698 } 699 700 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 701 splx(s); 702 bp->b_error = EPERM; 703 goto bad; 704 } 705 706 splx(s); 707 708 /* 709 * If it's a null transfer, return immediatly 710 */ 711 if (bp->b_bcount == 0) 712 goto done; 713 714 /* valid request? */ 715 if (softc->flags & SA_FLAG_FIXED) { 716 /* 717 * Fixed block device. The byte count must 718 * be a multiple of our block size. 719 */ 720 if (((softc->blk_mask != ~0) && 721 ((bp->b_bcount & softc->blk_mask) != 0)) || 722 ((softc->blk_mask == ~0) && 723 ((bp->b_bcount % softc->min_blk) != 0))) { 724 xpt_print_path(periph->path); 725 printf("Invalid request. Fixed block device " 726 "requests must be a multiple " 727 "of %d bytes\n", softc->media_blksize); 728 bp->b_error = EINVAL; 729 goto bad; 730 } 731 } else if ((bp->b_bcount > softc->max_blk) || 732 (bp->b_bcount < softc->min_blk) || 733 (bp->b_bcount & softc->blk_mask) != 0) { 734 735 xpt_print_path(periph->path); 736 printf("Invalid request. Variable block device " 737 "requests must be "); 738 if (softc->blk_mask != 0) { 739 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 740 } 741 printf("between %d and %d bytes\n", softc->min_blk, 742 softc->max_blk); 743 bp->b_error = EINVAL; 744 goto bad; 745 } 746 747 /* 748 * Mask interrupts so that the device cannot be invalidated until 749 * after we are in the queue. Otherwise, we might not properly 750 * clean up one of the buffers. 751 */ 752 s = splbio(); 753 754 /* 755 * Place it at the end of the queue. 756 */ 757 bufq_insert_tail(&softc->buf_queue, bp); 758 759 softc->queue_count++; 760 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 761 "%s byte %s queue count now %d\n", (int) bp->b_bcount, 762 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 763 (bp->b_flags & B_READ)? "read" : "write", softc->queue_count)); 764 765 splx(s); 766 767 /* 768 * Schedule ourselves for performing the work. 769 */ 770 xpt_schedule(periph, 1); 771 772 return; 773 bad: 774 bp->b_flags |= B_ERROR; 775 done: 776 777 /* 778 * Correctly set the buf to indicate a completed xfer 779 */ 780 bp->b_resid = bp->b_bcount; 781 biodone(bp); 782 } 783 784 static int 785 saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 786 { 787 struct cam_periph *periph; 788 struct sa_softc *softc; 789 scsi_space_code spaceop; 790 int didlockperiph = 0; 791 int s; 792 int unit; 793 int mode; 794 int density; 795 int error = 0; 796 797 unit = SAUNIT(dev); 798 mode = SAMODE(dev); 799 density = SADENSITY(dev); 800 error = 0; /* shut up gcc */ 801 spaceop = 0; /* shut up gcc */ 802 803 periph = cam_extend_get(saperiphs, unit); 804 if (periph == NULL) 805 return (ENXIO); 806 807 softc = (struct sa_softc *)periph->softc; 808 809 /* 810 * Check for control mode accesses. We allow MTIOCGET and 811 * MTIOCERRSTAT (but need to be the only one open in order 812 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 813 * and MTCOMP (but need to be the only one accessing this 814 * device to run those). 815 */ 816 817 if (SA_IS_CTRL(dev)) { 818 switch (cmd) { 819 case MTIOCGETEOTMODEL: 820 case MTIOCGET: 821 break; 822 case MTIOCERRSTAT: 823 /* 824 * If the periph isn't already locked, lock it 825 * so our MTIOCERRSTAT can reset latched error stats. 826 * 827 * If the periph is already locked, skip it because 828 * we're just getting status and it'll be up to the 829 * other thread that has this device open to do 830 * an MTIOCERRSTAT that would clear latched status. 831 */ 832 s = splsoftcam(); 833 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 834 error = cam_periph_lock(periph, PCATCH); 835 if (error != 0) { 836 splx(s); 837 return (error); 838 } 839 didlockperiph = 1; 840 } 841 break; 842 843 case MTIOCSETEOTMODEL: 844 case MTSETBSIZ: 845 case MTSETDNSTY: 846 case MTCOMP: 847 /* 848 * We need to acquire the peripheral here rather 849 * than at open time because we are sharing writable 850 * access to data structures. 851 */ 852 s = splsoftcam(); 853 error = cam_periph_lock(periph, PCATCH); 854 if (error != 0) { 855 splx(s); 856 return (error); 857 } 858 didlockperiph = 1; 859 break; 860 861 default: 862 return (EINVAL); 863 } 864 } 865 866 /* 867 * Find the device that the user is talking about 868 */ 869 switch (cmd) { 870 case MTIOCGET: 871 { 872 struct mtget *g = (struct mtget *)arg; 873 874 /* 875 * If this isn't the control mode device, actually go out 876 * and ask the drive again what it's set to. 877 */ 878 if (!SA_IS_CTRL(dev)) { 879 u_int8_t write_protect; 880 int comp_enabled, comp_supported; 881 error = sagetparams(periph, SA_PARAM_ALL, 882 &softc->media_blksize, &softc->media_density, 883 &softc->media_numblks, &softc->buffer_mode, 884 &write_protect, &softc->speed, &comp_supported, 885 &comp_enabled, &softc->comp_algorithm, NULL); 886 if (error) 887 break; 888 if (write_protect) 889 softc->flags |= SA_FLAG_TAPE_WP; 890 else 891 softc->flags &= ~SA_FLAG_TAPE_WP; 892 softc->flags &= ~(SA_FLAG_COMP_SUPP| 893 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 894 if (comp_supported) { 895 if (softc->saved_comp_algorithm == 0) 896 softc->saved_comp_algorithm = 897 softc->comp_algorithm; 898 softc->flags |= SA_FLAG_COMP_SUPP; 899 if (comp_enabled) 900 softc->flags |= SA_FLAG_COMP_ENABLED; 901 } else 902 softc->flags |= SA_FLAG_COMP_UNSUPP; 903 } 904 bzero(g, sizeof(struct mtget)); 905 g->mt_type = MT_ISAR; 906 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 907 g->mt_comp = MT_COMP_UNSUPP; 908 g->mt_comp0 = MT_COMP_UNSUPP; 909 g->mt_comp1 = MT_COMP_UNSUPP; 910 g->mt_comp2 = MT_COMP_UNSUPP; 911 g->mt_comp3 = MT_COMP_UNSUPP; 912 } else { 913 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 914 g->mt_comp = MT_COMP_DISABLED; 915 } else { 916 g->mt_comp = softc->comp_algorithm; 917 } 918 g->mt_comp0 = softc->comp_algorithm; 919 g->mt_comp1 = softc->comp_algorithm; 920 g->mt_comp2 = softc->comp_algorithm; 921 g->mt_comp3 = softc->comp_algorithm; 922 } 923 g->mt_density = softc->media_density; 924 g->mt_density0 = softc->media_density; 925 g->mt_density1 = softc->media_density; 926 g->mt_density2 = softc->media_density; 927 g->mt_density3 = softc->media_density; 928 g->mt_blksiz = softc->media_blksize; 929 g->mt_blksiz0 = softc->media_blksize; 930 g->mt_blksiz1 = softc->media_blksize; 931 g->mt_blksiz2 = softc->media_blksize; 932 g->mt_blksiz3 = softc->media_blksize; 933 g->mt_fileno = softc->fileno; 934 g->mt_blkno = softc->blkno; 935 g->mt_dsreg = (short) softc->dsreg; 936 /* 937 * Yes, we know that this is likely to overflow 938 */ 939 if (softc->last_resid_was_io) { 940 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 941 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 942 softc->last_io_resid = 0; 943 } 944 } 945 } else { 946 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 947 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 948 softc->last_ctl_resid = 0; 949 } 950 } 951 } 952 error = 0; 953 break; 954 } 955 case MTIOCERRSTAT: 956 { 957 struct scsi_tape_errors *sep = 958 &((union mterrstat *)arg)->scsi_errstat; 959 960 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 961 ("saioctl: MTIOCERRSTAT\n")); 962 963 bzero(sep, sizeof(*sep)); 964 sep->io_resid = softc->last_io_resid; 965 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 966 sizeof (sep->io_sense)); 967 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 968 sizeof (sep->io_cdb)); 969 sep->ctl_resid = softc->last_ctl_resid; 970 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 971 sizeof (sep->ctl_sense)); 972 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 973 sizeof (sep->ctl_cdb)); 974 975 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 976 bzero((caddr_t) &softc->errinfo, 977 sizeof (softc->errinfo)); 978 error = 0; 979 break; 980 } 981 case MTIOCTOP: 982 { 983 struct mtop *mt; 984 int count; 985 986 mt = (struct mtop *)arg; 987 988 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 989 ("saioctl: op=0x%x count=0x%x\n", 990 mt->mt_op, mt->mt_count)); 991 992 count = mt->mt_count; 993 switch (mt->mt_op) { 994 case MTWEOF: /* write an end-of-file marker */ 995 /* 996 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 997 * flag because by keeping track of filemarks 998 * we have last written we know ehether or not 999 * we need to write more when we close the device. 1000 */ 1001 error = sawritefilemarks(periph, count, FALSE); 1002 break; 1003 case MTWSS: /* write a setmark */ 1004 error = sawritefilemarks(periph, count, TRUE); 1005 break; 1006 case MTBSR: /* backward space record */ 1007 case MTFSR: /* forward space record */ 1008 case MTBSF: /* backward space file */ 1009 case MTFSF: /* forward space file */ 1010 case MTBSS: /* backward space setmark */ 1011 case MTFSS: /* forward space setmark */ 1012 case MTEOD: /* space to end of recorded medium */ 1013 { 1014 int nmarks; 1015 1016 spaceop = SS_FILEMARKS; 1017 nmarks = softc->filemarks; 1018 error = sacheckeod(periph); 1019 if (error) { 1020 xpt_print_path(periph->path); 1021 printf("EOD check prior to spacing failed\n"); 1022 softc->flags |= SA_FLAG_EIO_PENDING; 1023 break; 1024 } 1025 nmarks -= softc->filemarks; 1026 switch(mt->mt_op) { 1027 case MTBSR: 1028 count = -count; 1029 /* FALLTHROUGH */ 1030 case MTFSR: 1031 spaceop = SS_BLOCKS; 1032 break; 1033 case MTBSF: 1034 count = -count; 1035 /* FALLTHROUGH */ 1036 case MTFSF: 1037 break; 1038 case MTBSS: 1039 count = -count; 1040 /* FALLTHROUGH */ 1041 case MTFSS: 1042 spaceop = SS_SETMARKS; 1043 break; 1044 case MTEOD: 1045 spaceop = SS_EOD; 1046 count = 0; 1047 nmarks = 0; 1048 break; 1049 default: 1050 error = EINVAL; 1051 break; 1052 } 1053 if (error) 1054 break; 1055 1056 nmarks = softc->filemarks; 1057 /* 1058 * XXX: Why are we checking again? 1059 */ 1060 error = sacheckeod(periph); 1061 if (error) 1062 break; 1063 nmarks -= softc->filemarks; 1064 error = saspace(periph, count - nmarks, spaceop); 1065 /* 1066 * At this point, clear that we've written the tape 1067 * and that we've written any filemarks. We really 1068 * don't know what the applications wishes to do next- 1069 * the sacheckeod's will make sure we terminated the 1070 * tape correctly if we'd been writing, but the next 1071 * action the user application takes will set again 1072 * whether we need to write filemarks. 1073 */ 1074 softc->flags &= 1075 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1076 softc->filemarks = 0; 1077 break; 1078 } 1079 case MTREW: /* rewind */ 1080 (void) sacheckeod(periph); 1081 error = sarewind(periph); 1082 /* see above */ 1083 softc->flags &= 1084 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1085 softc->flags &= ~SA_FLAG_ERR_PENDING; 1086 softc->filemarks = 0; 1087 break; 1088 case MTERASE: /* erase */ 1089 error = saerase(periph, count); 1090 softc->flags &= 1091 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1092 softc->flags &= ~SA_FLAG_ERR_PENDING; 1093 break; 1094 case MTRETENS: /* re-tension tape */ 1095 error = saretension(periph); 1096 softc->flags &= 1097 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1098 softc->flags &= ~SA_FLAG_ERR_PENDING; 1099 break; 1100 case MTOFFL: /* rewind and put the drive offline */ 1101 1102 (void) sacheckeod(periph); 1103 /* see above */ 1104 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1105 softc->filemarks = 0; 1106 1107 error = sarewind(periph); 1108 /* clear the frozen flag anyway */ 1109 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1110 1111 /* 1112 * Be sure to allow media removal before ejecting. 1113 */ 1114 1115 saprevent(periph, PR_ALLOW); 1116 if (error == 0) { 1117 error = saloadunload(periph, FALSE); 1118 if (error == 0) { 1119 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1120 } 1121 } 1122 break; 1123 1124 case MTNOP: /* no operation, sets status only */ 1125 case MTCACHE: /* enable controller cache */ 1126 case MTNOCACHE: /* disable controller cache */ 1127 error = 0; 1128 break; 1129 1130 case MTSETBSIZ: /* Set block size for device */ 1131 1132 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1133 0, 0, 0); 1134 if (error == 0) { 1135 softc->last_media_blksize = 1136 softc->media_blksize; 1137 softc->media_blksize = count; 1138 if (count) { 1139 softc->flags |= SA_FLAG_FIXED; 1140 if (powerof2(count)) { 1141 softc->blk_shift = 1142 ffs(count) - 1; 1143 softc->blk_mask = count - 1; 1144 } else { 1145 softc->blk_mask = ~0; 1146 softc->blk_shift = 0; 1147 } 1148 /* 1149 * Make the user's desire 'persistent'. 1150 */ 1151 softc->quirks &= ~SA_QUIRK_VARIABLE; 1152 softc->quirks |= SA_QUIRK_FIXED; 1153 } else { 1154 softc->flags &= ~SA_FLAG_FIXED; 1155 if (softc->max_blk == 0) { 1156 softc->max_blk = ~0; 1157 } 1158 softc->blk_shift = 0; 1159 if (softc->blk_gran != 0) { 1160 softc->blk_mask = 1161 softc->blk_gran - 1; 1162 } else { 1163 softc->blk_mask = 0; 1164 } 1165 /* 1166 * Make the user's desire 'persistent'. 1167 */ 1168 softc->quirks |= SA_QUIRK_VARIABLE; 1169 softc->quirks &= ~SA_QUIRK_FIXED; 1170 } 1171 } 1172 break; 1173 case MTSETDNSTY: /* Set density for device and mode */ 1174 if (count > UCHAR_MAX) { 1175 error = EINVAL; 1176 break; 1177 } else { 1178 error = sasetparams(periph, SA_PARAM_DENSITY, 1179 0, count, 0, 0); 1180 } 1181 break; 1182 case MTCOMP: /* enable compression */ 1183 /* 1184 * Some devices don't support compression, and 1185 * don't like it if you ask them for the 1186 * compression page. 1187 */ 1188 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1189 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1190 error = ENODEV; 1191 break; 1192 } 1193 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1194 0, 0, count, SF_NO_PRINT); 1195 break; 1196 default: 1197 error = EINVAL; 1198 } 1199 break; 1200 } 1201 case MTIOCIEOT: 1202 case MTIOCEEOT: 1203 error = 0; 1204 break; 1205 case MTIOCRDSPOS: 1206 error = sardpos(periph, 0, (u_int32_t *) arg); 1207 break; 1208 case MTIOCRDHPOS: 1209 error = sardpos(periph, 1, (u_int32_t *) arg); 1210 break; 1211 case MTIOCSLOCATE: 1212 error = sasetpos(periph, 0, (u_int32_t *) arg); 1213 break; 1214 case MTIOCHLOCATE: 1215 error = sasetpos(periph, 1, (u_int32_t *) arg); 1216 break; 1217 case MTIOCGETEOTMODEL: 1218 error = 0; 1219 if (softc->quirks & SA_QUIRK_1FM) 1220 mode = 1; 1221 else 1222 mode = 2; 1223 *((u_int32_t *) arg) = mode; 1224 break; 1225 case MTIOCSETEOTMODEL: 1226 error = 0; 1227 switch (*((u_int32_t *) arg)) { 1228 case 1: 1229 softc->quirks &= ~SA_QUIRK_2FM; 1230 softc->quirks |= SA_QUIRK_1FM; 1231 break; 1232 case 2: 1233 softc->quirks &= ~SA_QUIRK_1FM; 1234 softc->quirks |= SA_QUIRK_2FM; 1235 break; 1236 default: 1237 error = EINVAL; 1238 break; 1239 } 1240 break; 1241 default: 1242 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1243 break; 1244 } 1245 1246 /* 1247 * Check to see if we cleared a frozen state 1248 */ 1249 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1250 switch(cmd) { 1251 case MTIOCRDSPOS: 1252 case MTIOCRDHPOS: 1253 case MTIOCSLOCATE: 1254 case MTIOCHLOCATE: 1255 softc->fileno = (daddr_t) -1; 1256 softc->blkno = (daddr_t) -1; 1257 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1258 xpt_print_path(periph->path); 1259 printf("tape state now unfrozen.\n"); 1260 break; 1261 default: 1262 break; 1263 } 1264 } 1265 if (didlockperiph) { 1266 cam_periph_unlock(periph); 1267 } 1268 return (error); 1269 } 1270 1271 static void 1272 sainit(void) 1273 { 1274 cam_status status; 1275 struct cam_path *path; 1276 1277 /* 1278 * Create our extend array for storing the devices we attach to. 1279 */ 1280 saperiphs = cam_extend_new(); 1281 if (saperiphs == NULL) { 1282 printf("sa: Failed to alloc extend array!\n"); 1283 return; 1284 } 1285 1286 /* 1287 * Install a global async callback. 1288 */ 1289 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1290 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1291 1292 if (status == CAM_REQ_CMP) { 1293 /* Register the async callbacks of interrest */ 1294 struct ccb_setasync csa; /* 1295 * This is an immediate CCB, 1296 * so using the stack is OK 1297 */ 1298 xpt_setup_ccb(&csa.ccb_h, path, 5); 1299 csa.ccb_h.func_code = XPT_SASYNC_CB; 1300 csa.event_enable = AC_FOUND_DEVICE; 1301 csa.callback = saasync; 1302 csa.callback_arg = NULL; 1303 xpt_action((union ccb *)&csa); 1304 status = csa.ccb_h.status; 1305 xpt_free_path(path); 1306 } 1307 1308 if (status != CAM_REQ_CMP) { 1309 printf("sa: Failed to attach master async callback " 1310 "due to status 0x%x!\n", status); 1311 } 1312 } 1313 1314 static void 1315 saoninvalidate(struct cam_periph *periph) 1316 { 1317 struct sa_softc *softc; 1318 struct buf *q_bp; 1319 struct ccb_setasync csa; 1320 int s; 1321 1322 softc = (struct sa_softc *)periph->softc; 1323 1324 /* 1325 * De-register any async callbacks. 1326 */ 1327 xpt_setup_ccb(&csa.ccb_h, periph->path, 1328 /* priority */ 5); 1329 csa.ccb_h.func_code = XPT_SASYNC_CB; 1330 csa.event_enable = 0; 1331 csa.callback = saasync; 1332 csa.callback_arg = periph; 1333 xpt_action((union ccb *)&csa); 1334 1335 softc->flags |= SA_FLAG_INVALID; 1336 1337 /* 1338 * Although the oninvalidate() routines are always called at 1339 * splsoftcam, we need to be at splbio() here to keep the buffer 1340 * queue from being modified while we traverse it. 1341 */ 1342 s = splbio(); 1343 1344 /* 1345 * Return all queued I/O with ENXIO. 1346 * XXX Handle any transactions queued to the card 1347 * with XPT_ABORT_CCB. 1348 */ 1349 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 1350 bufq_remove(&softc->buf_queue, q_bp); 1351 q_bp->b_resid = q_bp->b_bcount; 1352 q_bp->b_error = ENXIO; 1353 q_bp->b_flags |= B_ERROR; 1354 biodone(q_bp); 1355 } 1356 softc->queue_count = 0; 1357 splx(s); 1358 1359 xpt_print_path(periph->path); 1360 printf("lost device\n"); 1361 1362 } 1363 1364 static void 1365 sacleanup(struct cam_periph *periph) 1366 { 1367 struct sa_softc *softc; 1368 int i; 1369 1370 softc = (struct sa_softc *)periph->softc; 1371 1372 devstat_remove_entry(&softc->device_stats); 1373 1374 destroy_dev(softc->devs.ctl_dev); 1375 destroy_dev(softc->devs.r_dev); 1376 destroy_dev(softc->devs.nr_dev); 1377 destroy_dev(softc->devs.er_dev); 1378 1379 for (i = 0; i < SA_NUM_MODES; i++) { 1380 destroy_dev(softc->devs.mode_devs[i].r_dev); 1381 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1382 destroy_dev(softc->devs.mode_devs[i].er_dev); 1383 } 1384 1385 cam_extend_release(saperiphs, periph->unit_number); 1386 xpt_print_path(periph->path); 1387 printf("removing device entry\n"); 1388 free(softc, M_DEVBUF); 1389 } 1390 1391 static void 1392 saasync(void *callback_arg, u_int32_t code, 1393 struct cam_path *path, void *arg) 1394 { 1395 struct cam_periph *periph; 1396 1397 periph = (struct cam_periph *)callback_arg; 1398 switch (code) { 1399 case AC_FOUND_DEVICE: 1400 { 1401 struct ccb_getdev *cgd; 1402 cam_status status; 1403 1404 cgd = (struct ccb_getdev *)arg; 1405 if (cgd == NULL) 1406 break; 1407 1408 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1409 break; 1410 1411 /* 1412 * Allocate a peripheral instance for 1413 * this device and start the probe 1414 * process. 1415 */ 1416 status = cam_periph_alloc(saregister, saoninvalidate, 1417 sacleanup, sastart, 1418 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1419 saasync, AC_FOUND_DEVICE, cgd); 1420 1421 if (status != CAM_REQ_CMP 1422 && status != CAM_REQ_INPROG) 1423 printf("saasync: Unable to probe new device " 1424 "due to status 0x%x\n", status); 1425 break; 1426 } 1427 default: 1428 cam_periph_async(periph, code, path, arg); 1429 break; 1430 } 1431 } 1432 1433 static cam_status 1434 saregister(struct cam_periph *periph, void *arg) 1435 { 1436 struct sa_softc *softc; 1437 struct ccb_setasync csa; 1438 struct ccb_getdev *cgd; 1439 caddr_t match; 1440 int i; 1441 1442 cgd = (struct ccb_getdev *)arg; 1443 if (periph == NULL) { 1444 printf("saregister: periph was NULL!!\n"); 1445 return (CAM_REQ_CMP_ERR); 1446 } 1447 1448 if (cgd == NULL) { 1449 printf("saregister: no getdev CCB, can't register device\n"); 1450 return (CAM_REQ_CMP_ERR); 1451 } 1452 1453 softc = (struct sa_softc *)malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT); 1454 if (softc == NULL) { 1455 printf("saregister: Unable to probe new device. " 1456 "Unable to allocate softc\n"); 1457 return (CAM_REQ_CMP_ERR); 1458 } 1459 1460 bzero(softc, sizeof(*softc)); 1461 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1462 softc->state = SA_STATE_NORMAL; 1463 softc->fileno = (daddr_t) -1; 1464 softc->blkno = (daddr_t) -1; 1465 1466 bufq_init(&softc->buf_queue); 1467 periph->softc = softc; 1468 cam_extend_set(saperiphs, periph->unit_number, periph); 1469 1470 /* 1471 * See if this device has any quirks. 1472 */ 1473 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1474 (caddr_t)sa_quirk_table, 1475 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1476 sizeof(*sa_quirk_table), scsi_inquiry_match); 1477 1478 if (match != NULL) { 1479 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1480 softc->last_media_blksize = 1481 ((struct sa_quirk_entry *)match)->prefblk; 1482 #ifdef CAMDEBUG 1483 xpt_print_path(periph->path); 1484 printf("found quirk entry %d\n", (int) 1485 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1486 #endif 1487 } else 1488 softc->quirks = SA_QUIRK_NONE; 1489 1490 /* 1491 * The SA driver supports a blocksize, but we don't know the 1492 * blocksize until we media is inserted. So, set a flag to 1493 * indicate that the blocksize is unavailable right now. 1494 */ 1495 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1496 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1497 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1498 1499 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1500 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1501 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number); 1502 1503 softc->devs.r_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1504 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1505 0660, "r%s%d", periph->periph_name, periph->unit_number); 1506 1507 softc->devs.nr_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1508 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 1509 0660, "nr%s%d", periph->periph_name, periph->unit_number); 1510 1511 softc->devs.er_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1512 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 1513 0660, "er%s%d", periph->periph_name, periph->unit_number); 1514 1515 for (i = 0; i < SA_NUM_MODES; i++) { 1516 1517 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1518 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1519 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d", 1520 periph->periph_name, periph->unit_number, i); 1521 1522 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1523 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1524 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d", 1525 periph->periph_name, periph->unit_number, i); 1526 1527 1528 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1529 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1530 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d", 1531 periph->periph_name, periph->unit_number, i); 1532 } 1533 1534 /* 1535 * Add an async callback so that we get 1536 * notified if this device goes away. 1537 */ 1538 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1539 csa.ccb_h.func_code = XPT_SASYNC_CB; 1540 csa.event_enable = AC_LOST_DEVICE; 1541 csa.callback = saasync; 1542 csa.callback_arg = periph; 1543 xpt_action((union ccb *)&csa); 1544 1545 xpt_announce_periph(periph, NULL); 1546 1547 return (CAM_REQ_CMP); 1548 } 1549 1550 static void 1551 sastart(struct cam_periph *periph, union ccb *start_ccb) 1552 { 1553 struct sa_softc *softc; 1554 1555 softc = (struct sa_softc *)periph->softc; 1556 1557 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1558 1559 1560 switch (softc->state) { 1561 case SA_STATE_NORMAL: 1562 { 1563 /* Pull a buffer from the queue and get going on it */ 1564 struct buf *bp; 1565 int s; 1566 1567 /* 1568 * See if there is a buf with work for us to do.. 1569 */ 1570 s = splbio(); 1571 bp = bufq_first(&softc->buf_queue); 1572 if (periph->immediate_priority <= periph->pinfo.priority) { 1573 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1574 ("queuing for immediate ccb\n")); 1575 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1576 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1577 periph_links.sle); 1578 periph->immediate_priority = CAM_PRIORITY_NONE; 1579 splx(s); 1580 wakeup(&periph->ccb_list); 1581 } else if (bp == NULL) { 1582 splx(s); 1583 xpt_release_ccb(start_ccb); 1584 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1585 struct buf *done_bp; 1586 again: 1587 softc->queue_count--; 1588 bufq_remove(&softc->buf_queue, bp); 1589 bp->b_resid = bp->b_bcount; 1590 done_bp = bp; 1591 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1592 /* 1593 * We now just clear errors in this case 1594 * and let the residual be the notifier. 1595 */ 1596 bp->b_error = 0; 1597 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1598 /* 1599 * This can only happen if we're reading 1600 * in fixed length mode. In this case, 1601 * we dump the rest of the list the 1602 * same way. 1603 */ 1604 bp->b_error = 0; 1605 if (bufq_first(&softc->buf_queue) != NULL) { 1606 biodone(done_bp); 1607 goto again; 1608 } 1609 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1610 bp->b_error = EIO; 1611 bp->b_flags |= B_ERROR; 1612 } 1613 bp = bufq_first(&softc->buf_queue); 1614 /* 1615 * Only if we have no other buffers queued up 1616 * do we clear the pending error flag. 1617 */ 1618 if (bp == NULL) 1619 softc->flags &= ~SA_FLAG_ERR_PENDING; 1620 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1621 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1622 "%d more buffers queued up\n", 1623 (softc->flags & SA_FLAG_ERR_PENDING), 1624 (bp != NULL)? "not " : " ", softc->queue_count)); 1625 splx(s); 1626 xpt_release_ccb(start_ccb); 1627 biodone(done_bp); 1628 } else { 1629 u_int32_t length; 1630 1631 bufq_remove(&softc->buf_queue, bp); 1632 softc->queue_count--; 1633 1634 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1635 if (softc->blk_shift != 0) { 1636 length = 1637 bp->b_bcount >> softc->blk_shift; 1638 } else if (softc->media_blksize != 0) { 1639 length = 1640 bp->b_bcount / softc->media_blksize; 1641 } else { 1642 bp->b_error = EIO; 1643 xpt_print_path(periph->path); 1644 printf("zero blocksize for " 1645 "FIXED length writes?\n"); 1646 splx(s); 1647 biodone(bp); 1648 break; 1649 } 1650 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1651 ("Fixed Record Count is %d\n", length)); 1652 } else { 1653 length = bp->b_bcount; 1654 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1655 ("Variable Record Count is %d\n", length)); 1656 } 1657 devstat_start_transaction(&softc->device_stats); 1658 /* 1659 * Some people have theorized that we should 1660 * suppress illegal length indication if we are 1661 * running in variable block mode so that we don't 1662 * have to request sense every time our requested 1663 * block size is larger than the written block. 1664 * The residual information from the ccb allows 1665 * us to identify this situation anyway. The only 1666 * problem with this is that we will not get 1667 * information about blocks that are larger than 1668 * our read buffer unless we set the block size 1669 * in the mode page to something other than 0. 1670 * 1671 * I believe that this is a non-issue. If user apps 1672 * don't adjust their read size to match our record 1673 * size, that's just life. Anyway, the typical usage 1674 * would be to issue, e.g., 64KB reads and occasionally 1675 * have to do deal with 512 byte or 1KB intermediate 1676 * records. 1677 */ 1678 softc->dsreg = (bp->b_flags & B_READ)? 1679 MTIO_DSREG_RD : MTIO_DSREG_WR; 1680 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1681 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0, 1682 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1683 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1684 IO_TIMEOUT); 1685 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1686 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1687 start_ccb->ccb_h.ccb_bp = bp; 1688 bp = bufq_first(&softc->buf_queue); 1689 splx(s); 1690 xpt_action(start_ccb); 1691 } 1692 1693 if (bp != NULL) { 1694 /* Have more work to do, so ensure we stay scheduled */ 1695 xpt_schedule(periph, 1); 1696 } 1697 break; 1698 } 1699 case SA_STATE_ABNORMAL: 1700 default: 1701 panic("state 0x%x in sastart", softc->state); 1702 break; 1703 } 1704 } 1705 1706 1707 static void 1708 sadone(struct cam_periph *periph, union ccb *done_ccb) 1709 { 1710 struct sa_softc *softc; 1711 struct ccb_scsiio *csio; 1712 1713 softc = (struct sa_softc *)periph->softc; 1714 csio = &done_ccb->csio; 1715 switch (CCB_Type(csio)) { 1716 case SA_CCB_BUFFER_IO: 1717 { 1718 struct buf *bp; 1719 int error; 1720 1721 softc->dsreg = MTIO_DSREG_REST; 1722 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 1723 error = 0; 1724 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1725 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1726 /* 1727 * A retry was scheduled, so just return. 1728 */ 1729 return; 1730 } 1731 } 1732 1733 if (error == EIO) { 1734 int s; 1735 struct buf *q_bp; 1736 1737 /* 1738 * Catastrophic error. Mark the tape as frozen 1739 * (we no longer know tape position). 1740 * 1741 * Return all queued I/O with EIO, and unfreeze 1742 * our queue so that future transactions that 1743 * attempt to fix this problem can get to the 1744 * device. 1745 * 1746 */ 1747 1748 s = splbio(); 1749 softc->flags |= SA_FLAG_TAPE_FROZEN; 1750 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) { 1751 bufq_remove(&softc->buf_queue, q_bp); 1752 q_bp->b_resid = q_bp->b_bcount; 1753 q_bp->b_error = EIO; 1754 q_bp->b_flags |= B_ERROR; 1755 biodone(q_bp); 1756 } 1757 splx(s); 1758 } 1759 if (error != 0) { 1760 bp->b_resid = bp->b_bcount; 1761 bp->b_error = error; 1762 bp->b_flags |= B_ERROR; 1763 /* 1764 * In the error case, position is updated in saerror. 1765 */ 1766 } else { 1767 bp->b_resid = csio->resid; 1768 bp->b_error = 0; 1769 if (csio->resid != 0) { 1770 bp->b_flags |= B_ERROR; 1771 } 1772 if ((bp->b_flags & B_READ) == 0) { 1773 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1774 softc->filemarks = 0; 1775 } 1776 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1777 (softc->blkno != (daddr_t) -1)) { 1778 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1779 u_int32_t l; 1780 if (softc->blk_shift != 0) { 1781 l = bp->b_bcount >> 1782 softc->blk_shift; 1783 } else { 1784 l = bp->b_bcount / 1785 softc->media_blksize; 1786 } 1787 softc->blkno += (daddr_t) l; 1788 } else { 1789 softc->blkno++; 1790 } 1791 } 1792 } 1793 /* 1794 * If we had an error (immediate or pending), 1795 * release the device queue now. 1796 */ 1797 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1798 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1799 #ifdef CAMDEBUG 1800 if (error || bp->b_resid) { 1801 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1802 ("error %d resid %ld count %ld\n", error, 1803 bp->b_resid, bp->b_bcount)); 1804 } 1805 #endif 1806 devstat_end_transaction_buf(&softc->device_stats, bp); 1807 biodone(bp); 1808 break; 1809 } 1810 case SA_CCB_WAITING: 1811 { 1812 /* Caller will release the CCB */ 1813 wakeup(&done_ccb->ccb_h.cbfcnp); 1814 return; 1815 } 1816 } 1817 xpt_release_ccb(done_ccb); 1818 } 1819 1820 /* 1821 * Mount the tape (make sure it's ready for I/O). 1822 */ 1823 static int 1824 samount(struct cam_periph *periph, int oflags, dev_t dev) 1825 { 1826 struct sa_softc *softc; 1827 union ccb *ccb; 1828 int error; 1829 1830 /* 1831 * oflags can be checked for 'kind' of open (read-only check) - later 1832 * dev can be checked for a control-mode or compression open - later 1833 */ 1834 UNUSED_PARAMETER(oflags); 1835 UNUSED_PARAMETER(dev); 1836 1837 1838 softc = (struct sa_softc *)periph->softc; 1839 1840 /* 1841 * This should determine if something has happend since the last 1842 * open/mount that would invalidate the mount. We do *not* want 1843 * to retry this command- we just want the status. But we only 1844 * do this if we're mounted already- if we're not mounted, 1845 * we don't care about the unit read state and can instead use 1846 * this opportunity to attempt to reserve the tape unit. 1847 */ 1848 1849 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1850 ccb = cam_periph_getccb(periph, 1); 1851 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1852 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1853 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1854 &softc->device_stats); 1855 QFRLS(ccb); 1856 if (error == ENXIO) { 1857 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1858 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1859 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1860 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1861 &softc->device_stats); 1862 QFRLS(ccb); 1863 } else if (error) { 1864 /* 1865 * We don't need to freeze the tape because we 1866 * will now attempt to rewind/load it. 1867 */ 1868 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1869 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1870 xpt_print_path(ccb->ccb_h.path); 1871 printf("error %d on TUR in samount\n", error); 1872 } 1873 } 1874 } else { 1875 error = sareservereleaseunit(periph, TRUE); 1876 if (error) { 1877 return (error); 1878 } 1879 ccb = cam_periph_getccb(periph, 1); 1880 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1881 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1882 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1883 &softc->device_stats); 1884 QFRLS(ccb); 1885 } 1886 1887 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1888 struct scsi_read_block_limits_data *rblim = NULL; 1889 int comp_enabled, comp_supported; 1890 u_int8_t write_protect, guessing = 0; 1891 1892 /* 1893 * Clear out old state. 1894 */ 1895 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1896 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1897 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1898 softc->filemarks = 0; 1899 1900 /* 1901 * *Very* first off, make sure we're loaded to BOT. 1902 */ 1903 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1904 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1905 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1906 &softc->device_stats); 1907 QFRLS(ccb); 1908 1909 /* 1910 * In case this doesn't work, do a REWIND instead 1911 */ 1912 if (error) { 1913 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1914 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1915 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1916 &softc->device_stats); 1917 QFRLS(ccb); 1918 } 1919 if (error) { 1920 xpt_release_ccb(ccb); 1921 goto exit; 1922 } 1923 1924 /* 1925 * Do a dummy test read to force access to the 1926 * media so that the drive will really know what's 1927 * there. We actually don't really care what the 1928 * blocksize on tape is and don't expect to really 1929 * read a full record. 1930 */ 1931 rblim = (struct scsi_read_block_limits_data *) 1932 malloc(8192, M_TEMP, M_WAITOK); 1933 if (rblim == NULL) { 1934 xpt_print_path(ccb->ccb_h.path); 1935 printf("no memory for test read\n"); 1936 xpt_release_ccb(ccb); 1937 error = ENOMEM; 1938 goto exit; 1939 } 1940 1941 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1942 scsi_sa_read_write(&ccb->csio, 0, sadone, 1943 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1944 (void *) rblim, 8192, SSD_FULL_SIZE, 1945 IO_TIMEOUT); 1946 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1947 &softc->device_stats); 1948 QFRLS(ccb); 1949 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1950 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1951 error = cam_periph_runccb(ccb, saerror, 0, 1952 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA, 1953 &softc->device_stats); 1954 QFRLS(ccb); 1955 if (error) { 1956 xpt_print_path(ccb->ccb_h.path); 1957 printf("unable to rewind after test read\n"); 1958 xpt_release_ccb(ccb); 1959 goto exit; 1960 } 1961 } 1962 1963 /* 1964 * Next off, determine block limits. 1965 */ 1966 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1967 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1968 1969 error = cam_periph_runccb(ccb, saerror, 0, 1970 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO, 1971 &softc->device_stats); 1972 QFRLS(ccb); 1973 xpt_release_ccb(ccb); 1974 1975 if (error != 0) { 1976 /* 1977 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1978 * a MANDATORY command. Anyway- it doesn't matter- 1979 * we can proceed anyway. 1980 */ 1981 softc->blk_gran = 0; 1982 softc->max_blk = ~0; 1983 softc->min_blk = 0; 1984 } else { 1985 if (softc->scsi_rev >= SCSI_REV_3) { 1986 softc->blk_gran = RBL_GRAN(rblim); 1987 } else { 1988 softc->blk_gran = 0; 1989 } 1990 /* 1991 * We take max_blk == min_blk to mean a default to 1992 * fixed mode- but note that whatever we get out of 1993 * sagetparams below will actually determine whether 1994 * we are actually *in* fixed mode. 1995 */ 1996 softc->max_blk = scsi_3btoul(rblim->maximum); 1997 softc->min_blk = scsi_2btoul(rblim->minimum); 1998 1999 2000 } 2001 /* 2002 * Next, perform a mode sense to determine 2003 * current density, blocksize, compression etc. 2004 */ 2005 error = sagetparams(periph, SA_PARAM_ALL, 2006 &softc->media_blksize, 2007 &softc->media_density, 2008 &softc->media_numblks, 2009 &softc->buffer_mode, &write_protect, 2010 &softc->speed, &comp_supported, 2011 &comp_enabled, &softc->comp_algorithm, 2012 NULL); 2013 2014 if (error != 0) { 2015 /* 2016 * We could work a little harder here. We could 2017 * adjust our attempts to get information. It 2018 * might be an ancient tape drive. If someone 2019 * nudges us, we'll do that. 2020 */ 2021 goto exit; 2022 } 2023 2024 /* 2025 * If no quirk has determined that this is a device that is 2026 * preferred to be in fixed or variable mode, now is the time 2027 * to find out. 2028 */ 2029 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2030 guessing = 1; 2031 /* 2032 * This could be expensive to find out. Luckily we 2033 * only need to do this once. If we start out in 2034 * 'default' mode, try and set ourselves to one 2035 * of the densities that would determine a wad 2036 * of other stuff. Go from highest to lowest. 2037 */ 2038 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2039 int i; 2040 static u_int8_t ctry[] = { 2041 SCSI_DENSITY_HALFINCH_PE, 2042 SCSI_DENSITY_HALFINCH_6250C, 2043 SCSI_DENSITY_HALFINCH_6250, 2044 SCSI_DENSITY_HALFINCH_1600, 2045 SCSI_DENSITY_HALFINCH_800, 2046 SCSI_DENSITY_QIC_4GB, 2047 SCSI_DENSITY_QIC_2GB, 2048 SCSI_DENSITY_QIC_525_320, 2049 SCSI_DENSITY_QIC_150, 2050 SCSI_DENSITY_QIC_120, 2051 SCSI_DENSITY_QIC_24, 2052 SCSI_DENSITY_QIC_11_9TRK, 2053 SCSI_DENSITY_QIC_11_4TRK, 2054 SCSI_DENSITY_QIC_1320, 2055 SCSI_DENSITY_QIC_3080, 2056 0 2057 }; 2058 for (i = 0; ctry[i]; i++) { 2059 error = sasetparams(periph, 2060 SA_PARAM_DENSITY, 0, ctry[i], 2061 0, SF_NO_PRINT); 2062 if (error == 0) { 2063 softc->media_density = ctry[i]; 2064 break; 2065 } 2066 } 2067 } 2068 switch (softc->media_density) { 2069 case SCSI_DENSITY_QIC_11_4TRK: 2070 case SCSI_DENSITY_QIC_11_9TRK: 2071 case SCSI_DENSITY_QIC_24: 2072 case SCSI_DENSITY_QIC_120: 2073 case SCSI_DENSITY_QIC_150: 2074 case SCSI_DENSITY_QIC_525_320: 2075 case SCSI_DENSITY_QIC_1320: 2076 case SCSI_DENSITY_QIC_3080: 2077 softc->quirks &= ~SA_QUIRK_2FM; 2078 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2079 softc->last_media_blksize = 512; 2080 break; 2081 case SCSI_DENSITY_QIC_4GB: 2082 case SCSI_DENSITY_QIC_2GB: 2083 softc->quirks &= ~SA_QUIRK_2FM; 2084 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2085 softc->last_media_blksize = 1024; 2086 break; 2087 default: 2088 softc->last_media_blksize = 2089 softc->media_blksize; 2090 softc->quirks |= SA_QUIRK_VARIABLE; 2091 break; 2092 } 2093 } 2094 2095 /* 2096 * If no quirk has determined that this is a device that needs 2097 * to have 2 Filemarks at EOD, now is the time to find out. 2098 */ 2099 2100 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2101 switch (softc->media_density) { 2102 case SCSI_DENSITY_HALFINCH_800: 2103 case SCSI_DENSITY_HALFINCH_1600: 2104 case SCSI_DENSITY_HALFINCH_6250: 2105 case SCSI_DENSITY_HALFINCH_6250C: 2106 case SCSI_DENSITY_HALFINCH_PE: 2107 softc->quirks &= ~SA_QUIRK_1FM; 2108 softc->quirks |= SA_QUIRK_2FM; 2109 break; 2110 default: 2111 break; 2112 } 2113 } 2114 2115 /* 2116 * Now validate that some info we got makes sense. 2117 */ 2118 if ((softc->max_blk < softc->media_blksize) || 2119 (softc->min_blk > softc->media_blksize && 2120 softc->media_blksize)) { 2121 xpt_print_path(ccb->ccb_h.path); 2122 printf("BLOCK LIMITS (%d..%d) could not match current " 2123 "block settings (%d)- adjusting\n", softc->min_blk, 2124 softc->max_blk, softc->media_blksize); 2125 softc->max_blk = softc->min_blk = 2126 softc->media_blksize; 2127 } 2128 2129 /* 2130 * Now put ourselves into the right frame of mind based 2131 * upon quirks... 2132 */ 2133 tryagain: 2134 /* 2135 * If we want to be in FIXED mode and our current blocksize 2136 * is not equal to our last blocksize (if nonzero), try and 2137 * set ourselves to this last blocksize (as the 'preferred' 2138 * block size). The initial quirkmatch at registry sets the 2139 * initial 'last' blocksize. If, for whatever reason, this 2140 * 'last' blocksize is zero, set the blocksize to 512, 2141 * or min_blk if that's larger. 2142 */ 2143 if ((softc->quirks & SA_QUIRK_FIXED) && 2144 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2145 (softc->media_blksize != softc->last_media_blksize)) { 2146 softc->media_blksize = softc->last_media_blksize; 2147 if (softc->media_blksize == 0) { 2148 softc->media_blksize = 512; 2149 if (softc->media_blksize < softc->min_blk) { 2150 softc->media_blksize = softc->min_blk; 2151 } 2152 } 2153 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2154 softc->media_blksize, 0, 0, SF_NO_PRINT); 2155 if (error) { 2156 xpt_print_path(ccb->ccb_h.path); 2157 printf("unable to set fixed blocksize to %d\n", 2158 softc->media_blksize); 2159 goto exit; 2160 } 2161 } 2162 2163 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2164 (softc->media_blksize != 0)) { 2165 softc->last_media_blksize = softc->media_blksize; 2166 softc->media_blksize = 0; 2167 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2168 0, 0, 0, SF_NO_PRINT); 2169 if (error) { 2170 /* 2171 * If this fails and we were guessing, just 2172 * assume that we got it wrong and go try 2173 * fixed block mode. Don't even check against 2174 * density code at this point. 2175 */ 2176 if (guessing) { 2177 softc->quirks &= ~SA_QUIRK_VARIABLE; 2178 softc->quirks |= SA_QUIRK_FIXED; 2179 if (softc->last_media_blksize == 0) 2180 softc->last_media_blksize = 512; 2181 goto tryagain; 2182 } 2183 xpt_print_path(ccb->ccb_h.path); 2184 printf("unable to set variable blocksize\n"); 2185 goto exit; 2186 } 2187 } 2188 2189 /* 2190 * Now that we have the current block size, 2191 * set up some parameters for sastart's usage. 2192 */ 2193 if (softc->media_blksize) { 2194 softc->flags |= SA_FLAG_FIXED; 2195 if (powerof2(softc->media_blksize)) { 2196 softc->blk_shift = 2197 ffs(softc->media_blksize) - 1; 2198 softc->blk_mask = softc->media_blksize - 1; 2199 } else { 2200 softc->blk_mask = ~0; 2201 softc->blk_shift = 0; 2202 } 2203 } else { 2204 /* 2205 * The SCSI-3 spec allows 0 to mean "unspecified". 2206 * The SCSI-1 spec allows 0 to mean 'infinite'. 2207 * 2208 * Either works here. 2209 */ 2210 if (softc->max_blk == 0) { 2211 softc->max_blk = ~0; 2212 } 2213 softc->blk_shift = 0; 2214 if (softc->blk_gran != 0) { 2215 softc->blk_mask = softc->blk_gran - 1; 2216 } else { 2217 softc->blk_mask = 0; 2218 } 2219 } 2220 2221 if (write_protect) 2222 softc->flags |= SA_FLAG_TAPE_WP; 2223 2224 if (comp_supported) { 2225 if (softc->saved_comp_algorithm == 0) 2226 softc->saved_comp_algorithm = 2227 softc->comp_algorithm; 2228 softc->flags |= SA_FLAG_COMP_SUPP; 2229 if (comp_enabled) 2230 softc->flags |= SA_FLAG_COMP_ENABLED; 2231 } else 2232 softc->flags |= SA_FLAG_COMP_UNSUPP; 2233 2234 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2235 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2236 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2237 0, 0, SF_NO_PRINT); 2238 if (error == 0) { 2239 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2240 } else { 2241 xpt_print_path(ccb->ccb_h.path); 2242 printf("unable to set buffered mode\n"); 2243 } 2244 error = 0; /* not an error */ 2245 } 2246 2247 2248 if (error == 0) { 2249 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2250 } 2251 exit: 2252 if (rblim != NULL) 2253 free(rblim, M_TEMP); 2254 2255 if (error != 0) { 2256 softc->dsreg = MTIO_DSREG_NIL; 2257 } else { 2258 softc->fileno = softc->blkno = 0; 2259 softc->dsreg = MTIO_DSREG_REST; 2260 } 2261 #ifdef SA_1FM_AT_EOD 2262 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2263 softc->quirks |= SA_QUIRK_1FM; 2264 #else 2265 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2266 softc->quirks |= SA_QUIRK_2FM; 2267 #endif 2268 } else 2269 xpt_release_ccb(ccb); 2270 2271 /* 2272 * If we return an error, we're not mounted any more, 2273 * so release any device reservation. 2274 */ 2275 if (error != 0) { 2276 (void) sareservereleaseunit(periph, FALSE); 2277 } else { 2278 /* 2279 * Clear I/O residual. 2280 */ 2281 softc->last_io_resid = 0; 2282 softc->last_ctl_resid = 0; 2283 } 2284 return (error); 2285 } 2286 2287 /* 2288 * How many filemarks do we need to write if we were to terminate the 2289 * tape session right now? Note that this can be a negative number 2290 */ 2291 2292 static int 2293 samarkswanted(struct cam_periph *periph) 2294 { 2295 int markswanted; 2296 struct sa_softc *softc; 2297 2298 softc = (struct sa_softc *)periph->softc; 2299 markswanted = 0; 2300 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2301 markswanted++; 2302 if (softc->quirks & SA_QUIRK_2FM) 2303 markswanted++; 2304 } 2305 markswanted -= softc->filemarks; 2306 return (markswanted); 2307 } 2308 2309 static int 2310 sacheckeod(struct cam_periph *periph) 2311 { 2312 int error; 2313 int markswanted; 2314 struct sa_softc *softc; 2315 2316 softc = (struct sa_softc *)periph->softc; 2317 markswanted = samarkswanted(periph); 2318 2319 if (markswanted > 0) { 2320 error = sawritefilemarks(periph, markswanted, FALSE); 2321 } else { 2322 error = 0; 2323 } 2324 return (error); 2325 } 2326 2327 static int 2328 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2329 { 2330 static const char *toobig = 2331 "%d-byte tape record bigger than supplied buffer\n"; 2332 struct cam_periph *periph; 2333 struct sa_softc *softc; 2334 struct ccb_scsiio *csio; 2335 struct scsi_sense_data *sense; 2336 u_int32_t resid = 0; 2337 int32_t info = 0; 2338 cam_status status; 2339 int error_code, sense_key, asc, ascq, error, aqvalid; 2340 2341 periph = xpt_path_periph(ccb->ccb_h.path); 2342 softc = (struct sa_softc *)periph->softc; 2343 csio = &ccb->csio; 2344 sense = &csio->sense_data; 2345 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2346 aqvalid = sense->extra_len >= 6; 2347 error = 0; 2348 2349 status = csio->ccb_h.status & CAM_STATUS_MASK; 2350 2351 /* 2352 * Calculate/latch up, any residuals... We do this in a funny 2-step 2353 * so we can print stuff here if we have CAM_DEBUG enabled for this 2354 * unit. 2355 */ 2356 if (status == CAM_SCSI_STATUS_ERROR) { 2357 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2358 info = (int32_t) scsi_4btoul(sense->info); 2359 resid = info; 2360 if ((softc->flags & SA_FLAG_FIXED) != 0) 2361 resid *= softc->media_blksize; 2362 } else { 2363 resid = csio->dxfer_len; 2364 info = resid; 2365 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2366 if (softc->media_blksize) 2367 info /= softc->media_blksize; 2368 } 2369 } 2370 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2371 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2372 sizeof (struct scsi_sense_data)); 2373 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2374 (int) csio->cdb_len); 2375 softc->last_io_resid = resid; 2376 softc->last_resid_was_io = 1; 2377 } else { 2378 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2379 sizeof (struct scsi_sense_data)); 2380 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2381 (int) csio->cdb_len); 2382 softc->last_ctl_resid = resid; 2383 softc->last_resid_was_io = 0; 2384 } 2385 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2386 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2387 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2388 sense_key, asc, ascq, status, 2389 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2390 } else { 2391 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2392 ("Cam Status 0x%x\n", status)); 2393 } 2394 2395 switch (status) { 2396 case CAM_REQ_CMP: 2397 return (0); 2398 case CAM_SCSI_STATUS_ERROR: 2399 /* 2400 * If a read/write command, we handle it here. 2401 */ 2402 if (CCB_Type(csio) != SA_CCB_WAITING) { 2403 break; 2404 } 2405 /* 2406 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2407 * on a non read/write command, we assume it's not an error 2408 * and propagate the residule and return. 2409 */ 2410 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2411 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2412 csio->resid = resid; 2413 QFRLS(ccb); 2414 return (0); 2415 } 2416 /* 2417 * Otherwise, we let the common code handle this. 2418 */ 2419 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2420 2421 /* 2422 * XXX: To Be Fixed 2423 * We cannot depend upon CAM honoring retry counts for these. 2424 */ 2425 case CAM_SCSI_BUS_RESET: 2426 case CAM_BDR_SENT: 2427 if (ccb->ccb_h.retry_count <= 0) { 2428 return (EIO); 2429 break; 2430 } 2431 /* FALLTHROUGH */ 2432 default: 2433 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2434 } 2435 2436 /* 2437 * Handle filemark, end of tape, mismatched record sizes.... 2438 * From this point out, we're only handling read/write cases. 2439 * Handle writes && reads differently. 2440 */ 2441 2442 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2443 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2444 csio->resid = resid; 2445 error = ENOSPC; 2446 } else if (sense->flags & SSD_EOM) { 2447 softc->flags |= SA_FLAG_EOM_PENDING; 2448 /* 2449 * Grotesque as it seems, the few times 2450 * I've actually seen a non-zero resid, 2451 * the tape drive actually lied and had 2452 * writtent all the data!. 2453 */ 2454 csio->resid = 0; 2455 } 2456 } else { 2457 csio->resid = resid; 2458 if (sense_key == SSD_KEY_BLANK_CHECK) { 2459 if (softc->quirks & SA_QUIRK_1FM) { 2460 error = 0; 2461 softc->flags |= SA_FLAG_EOM_PENDING; 2462 } else { 2463 error = EIO; 2464 } 2465 } else if (sense->flags & SSD_FILEMARK) { 2466 if (softc->flags & SA_FLAG_FIXED) { 2467 error = -1; 2468 softc->flags |= SA_FLAG_EOF_PENDING; 2469 } 2470 /* 2471 * Unconditionally, if we detected a filemark on a read, 2472 * mark that we've run moved a file ahead. 2473 */ 2474 if (softc->fileno != (daddr_t) -1) { 2475 softc->fileno++; 2476 softc->blkno = 0; 2477 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2478 } 2479 } 2480 } 2481 2482 /* 2483 * Incorrect Length usually applies to read, but can apply to writes. 2484 */ 2485 if (error == 0 && (sense->flags & SSD_ILI)) { 2486 if (info < 0) { 2487 xpt_print_path(csio->ccb_h.path); 2488 printf(toobig, csio->dxfer_len - info); 2489 csio->resid = csio->dxfer_len; 2490 error = EIO; 2491 } else { 2492 csio->resid = resid; 2493 if (softc->flags & SA_FLAG_FIXED) { 2494 softc->flags |= SA_FLAG_EIO_PENDING; 2495 } 2496 /* 2497 * Bump the block number if we hadn't seen a filemark. 2498 * Do this independent of errors (we've moved anyway). 2499 */ 2500 if ((sense->flags & SSD_FILEMARK) == 0) { 2501 if (softc->blkno != (daddr_t) -1) { 2502 softc->blkno++; 2503 csio->ccb_h.ccb_pflags |= 2504 SA_POSITION_UPDATED; 2505 } 2506 } 2507 } 2508 } 2509 2510 if (error <= 0) { 2511 /* 2512 * Unfreeze the queue if frozen as we're not returning anything 2513 * to our waiters that would indicate an I/O error has occurred 2514 * (yet). 2515 */ 2516 QFRLS(ccb); 2517 error = 0; 2518 } 2519 return (error); 2520 } 2521 2522 static int 2523 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2524 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2525 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2526 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2527 sa_comp_t *tcs) 2528 { 2529 union ccb *ccb; 2530 void *mode_buffer; 2531 struct scsi_mode_header_6 *mode_hdr; 2532 struct scsi_mode_blk_desc *mode_blk; 2533 int mode_buffer_len; 2534 struct sa_softc *softc; 2535 u_int8_t cpage; 2536 int error; 2537 cam_status status; 2538 2539 softc = (struct sa_softc *)periph->softc; 2540 ccb = cam_periph_getccb(periph, 1); 2541 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2542 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2543 else 2544 cpage = SA_DATA_COMPRESSION_PAGE; 2545 2546 retry: 2547 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2548 2549 if (params_to_get & SA_PARAM_COMPRESSION) { 2550 if (softc->quirks & SA_QUIRK_NOCOMP) { 2551 *comp_supported = FALSE; 2552 params_to_get &= ~SA_PARAM_COMPRESSION; 2553 } else 2554 mode_buffer_len += sizeof (sa_comp_t); 2555 } 2556 2557 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2558 bzero(mode_buffer, mode_buffer_len); 2559 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2560 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2561 2562 /* it is safe to retry this */ 2563 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2564 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2565 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2566 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2567 2568 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2569 &softc->device_stats); 2570 QFRLS(ccb); 2571 2572 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2573 2574 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2575 /* 2576 * Hmm. Let's see if we can try another page... 2577 * If we've already done that, give up on compression 2578 * for this device and remember this for the future 2579 * and attempt the request without asking for compression 2580 * info. 2581 */ 2582 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2583 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2584 goto retry; 2585 } 2586 softc->quirks |= SA_QUIRK_NOCOMP; 2587 free(mode_buffer, M_TEMP); 2588 goto retry; 2589 } else if (status == CAM_SCSI_STATUS_ERROR) { 2590 /* Tell the user about the fatal error. */ 2591 scsi_sense_print(&ccb->csio); 2592 goto sagetparamsexit; 2593 } 2594 2595 /* 2596 * If the user only wants the compression information, and 2597 * the device doesn't send back the block descriptor, it's 2598 * no big deal. If the user wants more than just 2599 * compression, though, and the device doesn't pass back the 2600 * block descriptor, we need to send another mode sense to 2601 * get the block descriptor. 2602 */ 2603 if ((mode_hdr->blk_desc_len == 0) && 2604 (params_to_get & SA_PARAM_COMPRESSION) && 2605 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2606 2607 /* 2608 * Decrease the mode buffer length by the size of 2609 * the compression page, to make sure the data 2610 * there doesn't get overwritten. 2611 */ 2612 mode_buffer_len -= sizeof (sa_comp_t); 2613 2614 /* 2615 * Now move the compression page that we presumably 2616 * got back down the memory chunk a little bit so 2617 * it doesn't get spammed. 2618 */ 2619 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2620 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2621 2622 /* 2623 * Now, we issue another mode sense and just ask 2624 * for the block descriptor, etc. 2625 */ 2626 2627 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2628 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2629 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2630 SCSIOP_TIMEOUT); 2631 2632 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2633 &softc->device_stats); 2634 QFRLS(ccb); 2635 2636 if (error != 0) 2637 goto sagetparamsexit; 2638 } 2639 2640 if (params_to_get & SA_PARAM_BLOCKSIZE) 2641 *blocksize = scsi_3btoul(mode_blk->blklen); 2642 2643 if (params_to_get & SA_PARAM_NUMBLOCKS) 2644 *numblocks = scsi_3btoul(mode_blk->nblocks); 2645 2646 if (params_to_get & SA_PARAM_BUFF_MODE) 2647 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2648 2649 if (params_to_get & SA_PARAM_DENSITY) 2650 *density = mode_blk->density; 2651 2652 if (params_to_get & SA_PARAM_WP) 2653 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2654 2655 if (params_to_get & SA_PARAM_SPEED) 2656 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2657 2658 if (params_to_get & SA_PARAM_COMPRESSION) { 2659 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2660 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2661 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2662 *comp_supported = 2663 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2664 *comp_enabled = 2665 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2666 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2667 } else { 2668 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2669 /* 2670 * We don't really know whether this device supports 2671 * Data Compression if the the algorithm field is 2672 * zero. Just say we do. 2673 */ 2674 *comp_supported = TRUE; 2675 *comp_enabled = 2676 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2677 *comp_algorithm = cp->sel_comp_alg; 2678 } 2679 if (tcs != NULL) 2680 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2681 } 2682 2683 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2684 int idx; 2685 char *xyz = mode_buffer; 2686 xpt_print_path(periph->path); 2687 printf("Mode Sense Data="); 2688 for (idx = 0; idx < mode_buffer_len; idx++) 2689 printf(" 0x%02x", xyz[idx] & 0xff); 2690 printf("\n"); 2691 } 2692 2693 sagetparamsexit: 2694 2695 xpt_release_ccb(ccb); 2696 free(mode_buffer, M_TEMP); 2697 return (error); 2698 } 2699 2700 /* 2701 * The purpose of this function is to set one of four different parameters 2702 * for a tape drive: 2703 * - blocksize 2704 * - density 2705 * - compression / compression algorithm 2706 * - buffering mode 2707 * 2708 * The assumption is that this will be called from saioctl(), and therefore 2709 * from a process context. Thus the waiting malloc calls below. If that 2710 * assumption ever changes, the malloc calls should be changed to be 2711 * NOWAIT mallocs. 2712 * 2713 * Any or all of the four parameters may be set when this function is 2714 * called. It should handle setting more than one parameter at once. 2715 */ 2716 static int 2717 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2718 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2719 u_int32_t sense_flags) 2720 { 2721 struct sa_softc *softc; 2722 u_int32_t current_blocksize; 2723 u_int32_t current_calg; 2724 u_int8_t current_density; 2725 u_int8_t current_speed; 2726 int comp_enabled, comp_supported; 2727 void *mode_buffer; 2728 int mode_buffer_len; 2729 struct scsi_mode_header_6 *mode_hdr; 2730 struct scsi_mode_blk_desc *mode_blk; 2731 sa_comp_t *ccomp, *cpage; 2732 int buff_mode; 2733 union ccb *ccb = NULL; 2734 int error; 2735 2736 softc = (struct sa_softc *)periph->softc; 2737 2738 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2739 2740 /* 2741 * Since it doesn't make sense to set the number of blocks, or 2742 * write protection, we won't try to get the current value. We 2743 * always want to get the blocksize, so we can set it back to the 2744 * proper value. 2745 */ 2746 error = sagetparams(periph, 2747 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2748 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2749 ¤t_speed, &comp_supported, &comp_enabled, 2750 ¤t_calg, ccomp); 2751 2752 if (error != 0) { 2753 free(ccomp, M_TEMP); 2754 return (error); 2755 } 2756 2757 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2758 if (params_to_set & SA_PARAM_COMPRESSION) 2759 mode_buffer_len += sizeof (sa_comp_t); 2760 2761 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2762 bzero(mode_buffer, mode_buffer_len); 2763 2764 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2765 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2766 2767 ccb = cam_periph_getccb(periph, 1); 2768 2769 retry: 2770 2771 if (params_to_set & SA_PARAM_COMPRESSION) { 2772 if (mode_blk) { 2773 cpage = (sa_comp_t *)&mode_blk[1]; 2774 } else { 2775 cpage = (sa_comp_t *)&mode_hdr[1]; 2776 } 2777 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2778 cpage->hdr.pagecode &= ~0x80; 2779 } else 2780 cpage = NULL; 2781 2782 /* 2783 * If the caller wants us to set the blocksize, use the one they 2784 * pass in. Otherwise, use the blocksize we got back from the 2785 * mode select above. 2786 */ 2787 if (mode_blk) { 2788 if (params_to_set & SA_PARAM_BLOCKSIZE) 2789 scsi_ulto3b(blocksize, mode_blk->blklen); 2790 else 2791 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2792 2793 /* 2794 * Set density if requested, else preserve old density. 2795 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2796 * devices, else density we've latched up in our softc. 2797 */ 2798 if (params_to_set & SA_PARAM_DENSITY) { 2799 mode_blk->density = density; 2800 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2801 mode_blk->density = SCSI_SAME_DENSITY; 2802 } else { 2803 mode_blk->density = softc->media_density; 2804 } 2805 } 2806 2807 /* 2808 * For mode selects, these two fields must be zero. 2809 */ 2810 mode_hdr->data_length = 0; 2811 mode_hdr->medium_type = 0; 2812 2813 /* set the speed to the current value */ 2814 mode_hdr->dev_spec = current_speed; 2815 2816 /* set single-initiator buffering mode */ 2817 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2818 2819 if (mode_blk) 2820 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2821 else 2822 mode_hdr->blk_desc_len = 0; 2823 2824 /* 2825 * First, if the user wants us to set the compression algorithm or 2826 * just turn compression on, check to make sure that this drive 2827 * supports compression. 2828 */ 2829 if (params_to_set & SA_PARAM_COMPRESSION) { 2830 /* 2831 * If the compression algorithm is 0, disable compression. 2832 * If the compression algorithm is non-zero, enable 2833 * compression and set the compression type to the 2834 * specified compression algorithm, unless the algorithm is 2835 * MT_COMP_ENABLE. In that case, we look at the 2836 * compression algorithm that is currently set and if it is 2837 * non-zero, we leave it as-is. If it is zero, and we have 2838 * saved a compression algorithm from a time when 2839 * compression was enabled before, set the compression to 2840 * the saved value. 2841 */ 2842 switch (ccomp->hdr.pagecode & ~0x80) { 2843 case SA_DATA_COMPRESSION_PAGE: 2844 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2845 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2846 if (calg == 0) { 2847 /* 2848 * Disable compression, but leave the 2849 * decompression and the capability bit 2850 * alone. 2851 */ 2852 dcp->dce_and_dcc = SA_DCP_DCC; 2853 dcp->dde_and_red |= SA_DCP_DDE; 2854 break; 2855 } 2856 /* enable compression && decompression */ 2857 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2858 dcp->dde_and_red |= SA_DCP_DDE; 2859 /* 2860 * If there, use compression algorithm from caller. 2861 * Otherwise, if there's a saved compression algorithm 2862 * and there is no current algorithm, use the saved 2863 * algorithm. Else parrot back what we got and hope 2864 * for the best. 2865 */ 2866 if (calg != MT_COMP_ENABLE) { 2867 scsi_ulto4b(calg, dcp->comp_algorithm); 2868 scsi_ulto4b(calg, dcp->decomp_algorithm); 2869 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2870 softc->saved_comp_algorithm != 0) { 2871 scsi_ulto4b(softc->saved_comp_algorithm, 2872 dcp->comp_algorithm); 2873 scsi_ulto4b(softc->saved_comp_algorithm, 2874 dcp->decomp_algorithm); 2875 } 2876 break; 2877 } 2878 case SA_DEVICE_CONFIGURATION_PAGE: 2879 { 2880 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2881 if (calg == 0) { 2882 dcp->sel_comp_alg = SA_COMP_NONE; 2883 break; 2884 } 2885 if (calg != MT_COMP_ENABLE) { 2886 dcp->sel_comp_alg = calg; 2887 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2888 softc->saved_comp_algorithm != 0) { 2889 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2890 } 2891 break; 2892 } 2893 default: 2894 /* 2895 * The drive doesn't seem to support compression, 2896 * so turn off the set compression bit. 2897 */ 2898 params_to_set &= ~SA_PARAM_COMPRESSION; 2899 xpt_print_path(periph->path); 2900 printf("device does not seem to support compression\n"); 2901 2902 /* 2903 * If that was the only thing the user wanted us to set, 2904 * clean up allocated resources and return with 2905 * 'operation not supported'. 2906 */ 2907 if (params_to_set == SA_PARAM_NONE) { 2908 free(mode_buffer, M_TEMP); 2909 xpt_release_ccb(ccb); 2910 return (ENODEV); 2911 } 2912 2913 /* 2914 * That wasn't the only thing the user wanted us to set. 2915 * So, decrease the stated mode buffer length by the 2916 * size of the compression mode page. 2917 */ 2918 mode_buffer_len -= sizeof(sa_comp_t); 2919 } 2920 } 2921 2922 /* It is safe to retry this operation */ 2923 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2924 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2925 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2926 2927 error = cam_periph_runccb(ccb, saerror, 0, 2928 sense_flags, &softc->device_stats); 2929 QFRLS(ccb); 2930 2931 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2932 int idx; 2933 char *xyz = mode_buffer; 2934 xpt_print_path(periph->path); 2935 printf("Err%d, Mode Select Data=", error); 2936 for (idx = 0; idx < mode_buffer_len; idx++) 2937 printf(" 0x%02x", xyz[idx] & 0xff); 2938 printf("\n"); 2939 } 2940 2941 2942 if (error) { 2943 /* 2944 * If we can, try without setting density/blocksize. 2945 */ 2946 if (mode_blk) { 2947 if ((params_to_set & 2948 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2949 mode_blk = NULL; 2950 goto retry; 2951 } 2952 } else { 2953 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2954 cpage = (sa_comp_t *)&mode_blk[1]; 2955 } 2956 2957 /* 2958 * If we were setting the blocksize, and that failed, we 2959 * want to set it to its original value. If we weren't 2960 * setting the blocksize, we don't want to change it. 2961 */ 2962 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2963 2964 /* 2965 * Set density if requested, else preserve old density. 2966 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2967 * devices, else density we've latched up in our softc. 2968 */ 2969 if (params_to_set & SA_PARAM_DENSITY) { 2970 mode_blk->density = current_density; 2971 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2972 mode_blk->density = SCSI_SAME_DENSITY; 2973 } else { 2974 mode_blk->density = softc->media_density; 2975 } 2976 2977 if (params_to_set & SA_PARAM_COMPRESSION) 2978 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2979 2980 /* 2981 * The retry count is the only CCB field that might have been 2982 * changed that we care about, so reset it back to 1. 2983 */ 2984 ccb->ccb_h.retry_count = 1; 2985 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2986 &softc->device_stats); 2987 QFRLS(ccb); 2988 } 2989 2990 xpt_release_ccb(ccb); 2991 2992 if (ccomp != NULL) 2993 free(ccomp, M_TEMP); 2994 2995 if (params_to_set & SA_PARAM_COMPRESSION) { 2996 if (error) { 2997 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2998 /* 2999 * Even if we get an error setting compression, 3000 * do not say that we don't support it. We could 3001 * have been wrong, or it may be media specific. 3002 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3003 */ 3004 softc->saved_comp_algorithm = softc->comp_algorithm; 3005 softc->comp_algorithm = 0; 3006 } else { 3007 softc->flags |= SA_FLAG_COMP_ENABLED; 3008 softc->comp_algorithm = calg; 3009 } 3010 } 3011 3012 free(mode_buffer, M_TEMP); 3013 return (error); 3014 } 3015 3016 static void 3017 saprevent(struct cam_periph *periph, int action) 3018 { 3019 struct sa_softc *softc; 3020 union ccb *ccb; 3021 int error, sf; 3022 3023 softc = (struct sa_softc *)periph->softc; 3024 3025 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3026 return; 3027 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3028 return; 3029 3030 /* 3031 * We can be quiet about illegal requests. 3032 */ 3033 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3034 sf = 0; 3035 } else 3036 sf = SF_QUIET_IR; 3037 3038 ccb = cam_periph_getccb(periph, 1); 3039 3040 /* It is safe to retry this operation */ 3041 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3042 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3043 3044 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 3045 QFRLS(ccb); 3046 if (error == 0) { 3047 if (action == PR_ALLOW) 3048 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3049 else 3050 softc->flags |= SA_FLAG_TAPE_LOCKED; 3051 } 3052 3053 xpt_release_ccb(ccb); 3054 } 3055 3056 static int 3057 sarewind(struct cam_periph *periph) 3058 { 3059 union ccb *ccb; 3060 struct sa_softc *softc; 3061 int error; 3062 3063 softc = (struct sa_softc *)periph->softc; 3064 3065 ccb = cam_periph_getccb(periph, 1); 3066 3067 /* It is safe to retry this operation */ 3068 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3069 SSD_FULL_SIZE, REWIND_TIMEOUT); 3070 3071 softc->dsreg = MTIO_DSREG_REW; 3072 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3073 softc->dsreg = MTIO_DSREG_REST; 3074 3075 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3076 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3077 3078 xpt_release_ccb(ccb); 3079 if (error == 0) 3080 softc->fileno = softc->blkno = (daddr_t) 0; 3081 else 3082 softc->fileno = softc->blkno = (daddr_t) -1; 3083 return (error); 3084 } 3085 3086 static int 3087 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3088 { 3089 union ccb *ccb; 3090 struct sa_softc *softc; 3091 int error; 3092 3093 softc = (struct sa_softc *)periph->softc; 3094 3095 ccb = cam_periph_getccb(periph, 1); 3096 3097 /* This cannot be retried */ 3098 3099 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3100 SSD_FULL_SIZE, SPACE_TIMEOUT); 3101 3102 /* 3103 * Clear residual because we will be using it. 3104 */ 3105 softc->last_ctl_resid = 0; 3106 3107 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3108 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3109 softc->dsreg = MTIO_DSREG_REST; 3110 3111 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3112 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3113 3114 xpt_release_ccb(ccb); 3115 3116 /* 3117 * If a spacing operation has failed, we need to invalidate 3118 * this mount. 3119 * 3120 * If the spacing operation was setmarks or to end of recorded data, 3121 * we no longer know our relative position. 3122 * 3123 * If the spacing operations was spacing files in reverse, we 3124 * take account of the residual, but still check against less 3125 * than zero- if we've gone negative, we must have hit BOT. 3126 * 3127 * If the spacing operations was spacing records in reverse and 3128 * we have a residual, we've either hit BOT or hit a filemark. 3129 * In the former case, we know our new record number (0). In 3130 * the latter case, we have absolutely no idea what the real 3131 * record number is- we've stopped between the end of the last 3132 * record in the previous file and the filemark that stopped 3133 * our spacing backwards. 3134 */ 3135 if (error) { 3136 softc->fileno = softc->blkno = (daddr_t) -1; 3137 } else if (code == SS_SETMARKS || code == SS_EOD) { 3138 softc->fileno = softc->blkno = (daddr_t) -1; 3139 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3140 softc->fileno += (count - softc->last_ctl_resid); 3141 if (softc->fileno < 0) /* we must of hit BOT */ 3142 softc->fileno = 0; 3143 softc->blkno = 0; 3144 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3145 softc->blkno += (count - softc->last_ctl_resid); 3146 if (count < 0) { 3147 if (softc->last_ctl_resid || softc->blkno < 0) { 3148 if (softc->fileno == 0) { 3149 softc->blkno = 0; 3150 } else { 3151 softc->blkno = (daddr_t) -1; 3152 } 3153 } 3154 } 3155 } 3156 return (error); 3157 } 3158 3159 static int 3160 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3161 { 3162 union ccb *ccb; 3163 struct sa_softc *softc; 3164 int error, nwm = 0; 3165 3166 softc = (struct sa_softc *)periph->softc; 3167 3168 ccb = cam_periph_getccb(periph, 1); 3169 /* 3170 * Clear residual because we will be using it. 3171 */ 3172 softc->last_ctl_resid = 0; 3173 3174 softc->dsreg = MTIO_DSREG_FMK; 3175 /* this *must* not be retried */ 3176 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3177 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3178 softc->dsreg = MTIO_DSREG_REST; 3179 3180 3181 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3182 3183 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3184 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3185 3186 if (error == 0 && nmarks) { 3187 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3188 nwm = nmarks - softc->last_ctl_resid; 3189 softc->filemarks += nwm; 3190 } 3191 3192 xpt_release_ccb(ccb); 3193 3194 /* 3195 * Update relative positions (if we're doing that). 3196 */ 3197 if (error) { 3198 softc->fileno = softc->blkno = (daddr_t) -1; 3199 } else if (softc->fileno != (daddr_t) -1) { 3200 softc->fileno += nwm; 3201 softc->blkno = 0; 3202 } 3203 return (error); 3204 } 3205 3206 static int 3207 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3208 { 3209 struct scsi_tape_position_data loc; 3210 union ccb *ccb; 3211 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3212 int error; 3213 3214 /* 3215 * We try and flush any buffered writes here if we were writing 3216 * and we're trying to get hardware block position. It eats 3217 * up performance substantially, but I'm wary of drive firmware. 3218 * 3219 * I think that *logical* block position is probably okay- 3220 * but hardware block position might have to wait for data 3221 * to hit media to be valid. Caveat Emptor. 3222 */ 3223 3224 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3225 error = sawritefilemarks(periph, 0, 0); 3226 if (error && error != EACCES) 3227 return (error); 3228 } 3229 3230 ccb = cam_periph_getccb(periph, 1); 3231 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3232 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3233 softc->dsreg = MTIO_DSREG_RBSY; 3234 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3235 softc->dsreg = MTIO_DSREG_REST; 3236 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3237 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3238 3239 if (error == 0) { 3240 if (loc.flags & SA_RPOS_UNCERTAIN) { 3241 error = EINVAL; /* nothing is certain */ 3242 } else { 3243 *blkptr = scsi_4btoul(loc.firstblk); 3244 } 3245 } 3246 3247 xpt_release_ccb(ccb); 3248 return (error); 3249 } 3250 3251 static int 3252 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3253 { 3254 union ccb *ccb; 3255 struct sa_softc *softc; 3256 int error; 3257 3258 /* 3259 * We used to try and flush any buffered writes here. 3260 * Now we push this onto user applications to either 3261 * flush the pending writes themselves (via a zero count 3262 * WRITE FILEMARKS command) or they can trust their tape 3263 * drive to do this correctly for them. 3264 */ 3265 3266 softc = (struct sa_softc *)periph->softc; 3267 ccb = cam_periph_getccb(periph, 1); 3268 3269 3270 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3271 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3272 3273 3274 softc->dsreg = MTIO_DSREG_POS; 3275 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3276 softc->dsreg = MTIO_DSREG_REST; 3277 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3278 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3279 xpt_release_ccb(ccb); 3280 /* 3281 * Note relative file && block number position as now unknown. 3282 */ 3283 softc->fileno = softc->blkno = (daddr_t) -1; 3284 return (error); 3285 } 3286 3287 static int 3288 saretension(struct cam_periph *periph) 3289 { 3290 union ccb *ccb; 3291 struct sa_softc *softc; 3292 int error; 3293 3294 softc = (struct sa_softc *)periph->softc; 3295 3296 ccb = cam_periph_getccb(periph, 1); 3297 3298 /* It is safe to retry this operation */ 3299 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3300 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3301 3302 softc->dsreg = MTIO_DSREG_TEN; 3303 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3304 softc->dsreg = MTIO_DSREG_REST; 3305 3306 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3307 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3308 xpt_release_ccb(ccb); 3309 if (error == 0) 3310 softc->fileno = softc->blkno = (daddr_t) 0; 3311 else 3312 softc->fileno = softc->blkno = (daddr_t) -1; 3313 return (error); 3314 } 3315 3316 static int 3317 sareservereleaseunit(struct cam_periph *periph, int reserve) 3318 { 3319 union ccb *ccb; 3320 struct sa_softc *softc; 3321 int error; 3322 3323 softc = (struct sa_softc *)periph->softc; 3324 ccb = cam_periph_getccb(periph, 1); 3325 3326 /* It is safe to retry this operation */ 3327 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3328 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3329 softc->dsreg = MTIO_DSREG_RBSY; 3330 error = cam_periph_runccb(ccb, saerror, 0, 3331 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3332 softc->dsreg = MTIO_DSREG_REST; 3333 QFRLS(ccb); 3334 xpt_release_ccb(ccb); 3335 3336 /* 3337 * If the error was Illegal Request, then the device doesn't support 3338 * RESERVE/RELEASE. This is not an error. 3339 */ 3340 if (error == EINVAL) { 3341 error = 0; 3342 } 3343 3344 return (error); 3345 } 3346 3347 static int 3348 saloadunload(struct cam_periph *periph, int load) 3349 { 3350 union ccb *ccb; 3351 struct sa_softc *softc; 3352 int error; 3353 3354 softc = (struct sa_softc *)periph->softc; 3355 3356 ccb = cam_periph_getccb(periph, 1); 3357 3358 /* It is safe to retry this operation */ 3359 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3360 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3361 3362 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3363 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3364 softc->dsreg = MTIO_DSREG_REST; 3365 QFRLS(ccb); 3366 xpt_release_ccb(ccb); 3367 3368 if (error || load == 0) 3369 softc->fileno = softc->blkno = (daddr_t) -1; 3370 else if (error == 0) 3371 softc->fileno = softc->blkno = (daddr_t) 0; 3372 return (error); 3373 } 3374 3375 static int 3376 saerase(struct cam_periph *periph, int longerase) 3377 { 3378 3379 union ccb *ccb; 3380 struct sa_softc *softc; 3381 int error; 3382 3383 softc = (struct sa_softc *)periph->softc; 3384 3385 ccb = cam_periph_getccb(periph, 1); 3386 3387 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3388 SSD_FULL_SIZE, ERASE_TIMEOUT); 3389 3390 softc->dsreg = MTIO_DSREG_ZER; 3391 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3392 softc->dsreg = MTIO_DSREG_REST; 3393 3394 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3395 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3396 xpt_release_ccb(ccb); 3397 return (error); 3398 } 3399 3400 #endif /* _KERNEL */ 3401 3402 /* 3403 * Read tape block limits command. 3404 */ 3405 void 3406 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3407 void (*cbfcnp)(struct cam_periph *, union ccb *), 3408 u_int8_t tag_action, 3409 struct scsi_read_block_limits_data *rlimit_buf, 3410 u_int8_t sense_len, u_int32_t timeout) 3411 { 3412 struct scsi_read_block_limits *scsi_cmd; 3413 3414 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3415 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3416 sizeof(*scsi_cmd), timeout); 3417 3418 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3419 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3420 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3421 } 3422 3423 void 3424 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3425 void (*cbfcnp)(struct cam_periph *, union ccb *), 3426 u_int8_t tag_action, int readop, int sli, 3427 int fixed, u_int32_t length, u_int8_t *data_ptr, 3428 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3429 { 3430 struct scsi_sa_rw *scsi_cmd; 3431 3432 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3433 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3434 scsi_cmd->sli_fixed = 0; 3435 if (sli && readop) 3436 scsi_cmd->sli_fixed |= SAR_SLI; 3437 if (fixed) 3438 scsi_cmd->sli_fixed |= SARW_FIXED; 3439 scsi_ulto3b(length, scsi_cmd->length); 3440 scsi_cmd->control = 0; 3441 3442 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3443 tag_action, data_ptr, dxfer_len, sense_len, 3444 sizeof(*scsi_cmd), timeout); 3445 } 3446 3447 void 3448 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3449 void (*cbfcnp)(struct cam_periph *, union ccb *), 3450 u_int8_t tag_action, int immediate, int eot, 3451 int reten, int load, u_int8_t sense_len, 3452 u_int32_t timeout) 3453 { 3454 struct scsi_load_unload *scsi_cmd; 3455 3456 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3457 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3458 scsi_cmd->opcode = LOAD_UNLOAD; 3459 if (immediate) 3460 scsi_cmd->immediate = SLU_IMMED; 3461 if (eot) 3462 scsi_cmd->eot_reten_load |= SLU_EOT; 3463 if (reten) 3464 scsi_cmd->eot_reten_load |= SLU_RETEN; 3465 if (load) 3466 scsi_cmd->eot_reten_load |= SLU_LOAD; 3467 3468 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3469 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3470 } 3471 3472 void 3473 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3474 void (*cbfcnp)(struct cam_periph *, union ccb *), 3475 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3476 u_int32_t timeout) 3477 { 3478 struct scsi_rewind *scsi_cmd; 3479 3480 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3481 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3482 scsi_cmd->opcode = REWIND; 3483 if (immediate) 3484 scsi_cmd->immediate = SREW_IMMED; 3485 3486 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3487 0, sense_len, sizeof(*scsi_cmd), timeout); 3488 } 3489 3490 void 3491 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3492 void (*cbfcnp)(struct cam_periph *, union ccb *), 3493 u_int8_t tag_action, scsi_space_code code, 3494 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3495 { 3496 struct scsi_space *scsi_cmd; 3497 3498 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3499 scsi_cmd->opcode = SPACE; 3500 scsi_cmd->code = code; 3501 scsi_ulto3b(count, scsi_cmd->count); 3502 scsi_cmd->control = 0; 3503 3504 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3505 0, sense_len, sizeof(*scsi_cmd), timeout); 3506 } 3507 3508 void 3509 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3510 void (*cbfcnp)(struct cam_periph *, union ccb *), 3511 u_int8_t tag_action, int immediate, int setmark, 3512 u_int32_t num_marks, u_int8_t sense_len, 3513 u_int32_t timeout) 3514 { 3515 struct scsi_write_filemarks *scsi_cmd; 3516 3517 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3518 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3519 scsi_cmd->opcode = WRITE_FILEMARKS; 3520 if (immediate) 3521 scsi_cmd->byte2 |= SWFMRK_IMMED; 3522 if (setmark) 3523 scsi_cmd->byte2 |= SWFMRK_WSMK; 3524 3525 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3526 3527 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3528 0, sense_len, sizeof(*scsi_cmd), timeout); 3529 } 3530 3531 /* 3532 * The reserve and release unit commands differ only by their opcodes. 3533 */ 3534 void 3535 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3536 void (*cbfcnp)(struct cam_periph *, union ccb *), 3537 u_int8_t tag_action, int third_party, 3538 int third_party_id, u_int8_t sense_len, 3539 u_int32_t timeout, int reserve) 3540 { 3541 struct scsi_reserve_release_unit *scsi_cmd; 3542 3543 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3544 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3545 3546 if (reserve) 3547 scsi_cmd->opcode = RESERVE_UNIT; 3548 else 3549 scsi_cmd->opcode = RELEASE_UNIT; 3550 3551 if (third_party) { 3552 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3553 scsi_cmd->lun_thirdparty |= 3554 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3555 } 3556 3557 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3558 0, sense_len, sizeof(*scsi_cmd), timeout); 3559 } 3560 3561 void 3562 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3563 void (*cbfcnp)(struct cam_periph *, union ccb *), 3564 u_int8_t tag_action, int immediate, int long_erase, 3565 u_int8_t sense_len, u_int32_t timeout) 3566 { 3567 struct scsi_erase *scsi_cmd; 3568 3569 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3570 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3571 3572 scsi_cmd->opcode = ERASE; 3573 3574 if (immediate) 3575 scsi_cmd->lun_imm_long |= SE_IMMED; 3576 3577 if (long_erase) 3578 scsi_cmd->lun_imm_long |= SE_LONG; 3579 3580 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3581 0, sense_len, sizeof(*scsi_cmd), timeout); 3582 } 3583 3584 /* 3585 * Read Tape Position command. 3586 */ 3587 void 3588 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3589 void (*cbfcnp)(struct cam_periph *, union ccb *), 3590 u_int8_t tag_action, int hardsoft, 3591 struct scsi_tape_position_data *sbp, 3592 u_int8_t sense_len, u_int32_t timeout) 3593 { 3594 struct scsi_tape_read_position *scmd; 3595 3596 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3597 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3598 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3599 bzero(scmd, sizeof(*scmd)); 3600 scmd->opcode = READ_POSITION; 3601 scmd->byte1 = hardsoft; 3602 } 3603 3604 /* 3605 * Set Tape Position command. 3606 */ 3607 void 3608 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3609 void (*cbfcnp)(struct cam_periph *, union ccb *), 3610 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3611 u_int8_t sense_len, u_int32_t timeout) 3612 { 3613 struct scsi_tape_locate *scmd; 3614 3615 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3616 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3617 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3618 bzero(scmd, sizeof(*scmd)); 3619 scmd->opcode = LOCATE; 3620 if (hardsoft) 3621 scmd->byte1 |= SA_SPOS_BT; 3622 scsi_ulto4b(blkno, scmd->blkaddr); 3623 } 3624