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sys/cam/scsi/scsi_sa.c
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1 /*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1999, 2000 Matthew Jacob 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD: releng/6.4/sys/cam/scsi/scsi_sa.c 181127 2008-08-01 18:25:28Z emaste $"); 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #ifdef _KERNEL 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #endif 38 #include <sys/types.h> 39 #include <sys/time.h> 40 #include <sys/bio.h> 41 #include <sys/limits.h> 42 #include <sys/malloc.h> 43 #include <sys/mtio.h> 44 #ifdef _KERNEL 45 #include <sys/conf.h> 46 #endif 47 #include <sys/fcntl.h> 48 #include <sys/devicestat.h> 49 50 #ifndef _KERNEL 51 #include <stdio.h> 52 #include <string.h> 53 #endif 54 55 #include <cam/cam.h> 56 #include <cam/cam_ccb.h> 57 #include <cam/cam_periph.h> 58 #include <cam/cam_xpt_periph.h> 59 #include <cam/cam_debug.h> 60 61 #include <cam/scsi/scsi_all.h> 62 #include <cam/scsi/scsi_message.h> 63 #include <cam/scsi/scsi_sa.h> 64 65 #ifdef _KERNEL 66 67 #include <opt_sa.h> 68 69 #ifndef SA_IO_TIMEOUT 70 #define SA_IO_TIMEOUT 4 71 #endif 72 #ifndef SA_SPACE_TIMEOUT 73 #define SA_SPACE_TIMEOUT 1 * 60 74 #endif 75 #ifndef SA_REWIND_TIMEOUT 76 #define SA_REWIND_TIMEOUT 2 * 60 77 #endif 78 #ifndef SA_ERASE_TIMEOUT 79 #define SA_ERASE_TIMEOUT 4 * 60 80 #endif 81 82 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 83 84 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 85 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 86 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 87 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 88 89 /* 90 * Additional options that can be set for config: SA_1FM_AT_EOT 91 */ 92 93 #ifndef UNUSED_PARAMETER 94 #define UNUSED_PARAMETER(x) x = x 95 #endif 96 97 #define QFRLS(ccb) \ 98 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 99 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 100 101 /* 102 * Driver states 103 */ 104 105 MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 106 107 typedef enum { 108 SA_STATE_NORMAL, SA_STATE_ABNORMAL 109 } sa_state; 110 111 #define ccb_pflags ppriv_field0 112 #define ccb_bp ppriv_ptr1 113 114 #define SA_CCB_BUFFER_IO 0x0 115 #define SA_CCB_WAITING 0x1 116 #define SA_CCB_TYPEMASK 0x1 117 #define SA_POSITION_UPDATED 0x2 118 119 #define Set_CCB_Type(x, type) \ 120 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 121 x->ccb_h.ccb_pflags |= type 122 123 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 124 125 126 127 typedef enum { 128 SA_FLAG_OPEN = 0x0001, 129 SA_FLAG_FIXED = 0x0002, 130 SA_FLAG_TAPE_LOCKED = 0x0004, 131 SA_FLAG_TAPE_MOUNTED = 0x0008, 132 SA_FLAG_TAPE_WP = 0x0010, 133 SA_FLAG_TAPE_WRITTEN = 0x0020, 134 SA_FLAG_EOM_PENDING = 0x0040, 135 SA_FLAG_EIO_PENDING = 0x0080, 136 SA_FLAG_EOF_PENDING = 0x0100, 137 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 138 SA_FLAG_EOF_PENDING), 139 SA_FLAG_INVALID = 0x0200, 140 SA_FLAG_COMP_ENABLED = 0x0400, 141 SA_FLAG_COMP_SUPP = 0x0800, 142 SA_FLAG_COMP_UNSUPP = 0x1000, 143 SA_FLAG_TAPE_FROZEN = 0x2000 144 } sa_flags; 145 146 typedef enum { 147 SA_MODE_REWIND = 0x00, 148 SA_MODE_NOREWIND = 0x01, 149 SA_MODE_OFFLINE = 0x02 150 } sa_mode; 151 152 typedef enum { 153 SA_PARAM_NONE = 0x00, 154 SA_PARAM_BLOCKSIZE = 0x01, 155 SA_PARAM_DENSITY = 0x02, 156 SA_PARAM_COMPRESSION = 0x04, 157 SA_PARAM_BUFF_MODE = 0x08, 158 SA_PARAM_NUMBLOCKS = 0x10, 159 SA_PARAM_WP = 0x20, 160 SA_PARAM_SPEED = 0x40, 161 SA_PARAM_ALL = 0x7f 162 } sa_params; 163 164 typedef enum { 165 SA_QUIRK_NONE = 0x00, 166 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 167 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 168 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 169 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 170 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 171 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 172 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 173 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 174 } sa_quirks; 175 176 /* units are bits 4-7, 16-21 (1024 units) */ 177 #define SAUNIT(DEV) \ 178 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 179 180 #define SAMODE(z) ((minor(z) & 0x3)) 181 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 182 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 183 184 #define SA_NOT_CTLDEV 0 185 #define SA_CTLDEV 1 186 187 #define SA_ATYPE_R 0 188 #define SA_ATYPE_NR 1 189 #define SA_ATYPE_ER 2 190 191 #define SAMINOR(ctl, unit, mode, access) \ 192 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 193 (mode << 0x2) | (access & 0x3)) 194 195 #define SA_NUM_MODES 4 196 struct sa_devs { 197 struct cdev *ctl_dev; 198 struct sa_mode_devs { 199 struct cdev *r_dev; 200 struct cdev *nr_dev; 201 struct cdev *er_dev; 202 } mode_devs[SA_NUM_MODES]; 203 }; 204 205 struct sa_softc { 206 sa_state state; 207 sa_flags flags; 208 sa_quirks quirks; 209 struct bio_queue_head bio_queue; 210 int queue_count; 211 struct devstat *device_stats; 212 struct sa_devs devs; 213 int blk_gran; 214 int blk_mask; 215 int blk_shift; 216 u_int32_t max_blk; 217 u_int32_t min_blk; 218 u_int32_t comp_algorithm; 219 u_int32_t saved_comp_algorithm; 220 u_int32_t media_blksize; 221 u_int32_t last_media_blksize; 222 u_int32_t media_numblks; 223 u_int8_t media_density; 224 u_int8_t speed; 225 u_int8_t scsi_rev; 226 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 227 int buffer_mode; 228 int filemarks; 229 union ccb saved_ccb; 230 int last_resid_was_io; 231 232 /* 233 * Relative to BOT Location. 234 */ 235 daddr_t fileno; 236 daddr_t blkno; 237 238 /* 239 * Latched Error Info 240 */ 241 struct { 242 struct scsi_sense_data _last_io_sense; 243 u_int32_t _last_io_resid; 244 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 245 struct scsi_sense_data _last_ctl_sense; 246 u_int32_t _last_ctl_resid; 247 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 248 #define last_io_sense errinfo._last_io_sense 249 #define last_io_resid errinfo._last_io_resid 250 #define last_io_cdb errinfo._last_io_cdb 251 #define last_ctl_sense errinfo._last_ctl_sense 252 #define last_ctl_resid errinfo._last_ctl_resid 253 #define last_ctl_cdb errinfo._last_ctl_cdb 254 } errinfo; 255 /* 256 * Misc other flags/state 257 */ 258 u_int32_t 259 : 29, 260 open_rdonly : 1, /* open read-only */ 261 open_pending_mount : 1, /* open pending mount */ 262 ctrl_mode : 1; /* control device open */ 263 }; 264 265 struct sa_quirk_entry { 266 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 267 sa_quirks quirks; /* specific quirk type */ 268 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 269 }; 270 271 static struct sa_quirk_entry sa_quirk_table[] = 272 { 273 { 274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 275 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 276 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 277 }, 278 { 279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 280 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 284 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "Python*", "*"}, SA_QUIRK_NODREAD, 0 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "VIPER 2525 25462", "-011"}, 297 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 298 }, 299 { 300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 301 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 302 }, 303 #if 0 304 { 305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 306 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 307 }, 308 #endif 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 311 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 312 }, 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 315 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 319 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 323 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 324 }, 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 327 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 331 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 332 }, 333 { /* jreynold@primenet.com */ 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 335 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 336 }, 337 { /* mike@sentex.net */ 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 339 "STT20000*", "*"}, SA_QUIRK_1FM, 0 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 343 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 347 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 351 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 355 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 359 " SLR*", "*"}, SA_QUIRK_1FM, 0 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 363 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 364 }, 365 { 366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 367 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 368 } 369 }; 370 371 static d_open_t saopen; 372 static d_close_t saclose; 373 static d_strategy_t sastrategy; 374 static d_ioctl_t saioctl; 375 static periph_init_t sainit; 376 static periph_ctor_t saregister; 377 static periph_oninv_t saoninvalidate; 378 static periph_dtor_t sacleanup; 379 static periph_start_t sastart; 380 static void saasync(void *callback_arg, u_int32_t code, 381 struct cam_path *path, void *arg); 382 static void sadone(struct cam_periph *periph, 383 union ccb *start_ccb); 384 static int saerror(union ccb *ccb, u_int32_t cam_flags, 385 u_int32_t sense_flags); 386 static int samarkswanted(struct cam_periph *); 387 static int sacheckeod(struct cam_periph *periph); 388 static int sagetparams(struct cam_periph *periph, 389 sa_params params_to_get, 390 u_int32_t *blocksize, u_int8_t *density, 391 u_int32_t *numblocks, int *buff_mode, 392 u_int8_t *write_protect, u_int8_t *speed, 393 int *comp_supported, int *comp_enabled, 394 u_int32_t *comp_algorithm, 395 sa_comp_t *comp_page); 396 static int sasetparams(struct cam_periph *periph, 397 sa_params params_to_set, 398 u_int32_t blocksize, u_int8_t density, 399 u_int32_t comp_algorithm, 400 u_int32_t sense_flags); 401 static void saprevent(struct cam_periph *periph, int action); 402 static int sarewind(struct cam_periph *periph); 403 static int saspace(struct cam_periph *periph, int count, 404 scsi_space_code code); 405 static int samount(struct cam_periph *, int, struct cdev *); 406 static int saretension(struct cam_periph *periph); 407 static int sareservereleaseunit(struct cam_periph *periph, 408 int reserve); 409 static int saloadunload(struct cam_periph *periph, int load); 410 static int saerase(struct cam_periph *periph, int longerase); 411 static int sawritefilemarks(struct cam_periph *periph, 412 int nmarks, int setmarks); 413 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 414 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 415 416 417 static struct periph_driver sadriver = 418 { 419 sainit, "sa", 420 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 421 }; 422 423 PERIPHDRIVER_DECLARE(sa, sadriver); 424 425 /* For 2.2-stable support */ 426 #ifndef D_TAPE 427 #define D_TAPE 0 428 #endif 429 430 431 static struct cdevsw sa_cdevsw = { 432 .d_version = D_VERSION, 433 .d_open = saopen, 434 .d_close = saclose, 435 .d_read = physread, 436 .d_write = physwrite, 437 .d_ioctl = saioctl, 438 .d_strategy = sastrategy, 439 .d_name = "sa", 440 .d_flags = D_TAPE | D_NEEDGIANT, 441 }; 442 443 static int 444 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 445 { 446 struct cam_periph *periph; 447 struct sa_softc *softc; 448 int unit; 449 int error; 450 int s; 451 452 unit = SAUNIT(dev); 453 454 s = splsoftcam(); 455 periph = (struct cam_periph *)dev->si_drv1; 456 if (periph == NULL) { 457 (void) splx(s); 458 return (ENXIO); 459 } 460 softc = (struct sa_softc *)periph->softc; 461 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 462 splx(s); 463 return (error); 464 } 465 splx(s); 466 467 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 468 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 469 470 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 471 cam_periph_unlock(periph); 472 return (ENXIO); 473 } 474 475 if (SA_IS_CTRL(dev)) { 476 softc->ctrl_mode = 1; 477 cam_periph_unlock(periph); 478 return (0); 479 } 480 481 if (softc->flags & SA_FLAG_OPEN) { 482 error = EBUSY; 483 } else if (softc->flags & SA_FLAG_INVALID) { 484 error = ENXIO; 485 } else { 486 /* 487 * Preserve whether this is a read_only open. 488 */ 489 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 490 491 /* 492 * The function samount ensures media is loaded and ready. 493 * It also does a device RESERVE if the tape isn't yet mounted. 494 * 495 * If the mount fails and this was a non-blocking open, 496 * make this a 'open_pending_mount' action. 497 */ 498 error = samount(periph, flags, dev); 499 if (error && (flags & O_NONBLOCK)) { 500 softc->flags |= SA_FLAG_OPEN; 501 softc->open_pending_mount = 1; 502 cam_periph_unlock(periph); 503 return (0); 504 } 505 } 506 507 if (error) { 508 cam_periph_release(periph); 509 } else { 510 saprevent(periph, PR_PREVENT); 511 softc->flags |= SA_FLAG_OPEN; 512 } 513 cam_periph_unlock(periph); 514 return (error); 515 } 516 517 static int 518 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 519 { 520 struct cam_periph *periph; 521 struct sa_softc *softc; 522 int unit, mode, error, writing, tmp; 523 int closedbits = SA_FLAG_OPEN; 524 525 unit = SAUNIT(dev); 526 mode = SAMODE(dev); 527 periph = (struct cam_periph *)dev->si_drv1; 528 if (periph == NULL) 529 return (ENXIO); 530 531 softc = (struct sa_softc *)periph->softc; 532 533 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 534 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 535 536 537 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 538 return (error); 539 } 540 541 softc->open_rdonly = 0; 542 if (SA_IS_CTRL(dev)) { 543 softc->ctrl_mode = 0; 544 cam_periph_release(periph); 545 cam_periph_unlock(periph); 546 return (0); 547 } 548 549 if (softc->open_pending_mount) { 550 softc->flags &= ~SA_FLAG_OPEN; 551 softc->open_pending_mount = 0; 552 cam_periph_release(periph); 553 cam_periph_unlock(periph); 554 return (0); 555 } 556 557 /* 558 * Were we writing the tape? 559 */ 560 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 561 562 /* 563 * See whether or not we need to write filemarks. If this 564 * fails, we probably have to assume we've lost tape 565 * position. 566 */ 567 error = sacheckeod(periph); 568 if (error) { 569 xpt_print_path(periph->path); 570 printf("failed to write terminating filemark(s)\n"); 571 softc->flags |= SA_FLAG_TAPE_FROZEN; 572 } 573 574 /* 575 * Whatever we end up doing, allow users to eject tapes from here on. 576 */ 577 saprevent(periph, PR_ALLOW); 578 579 /* 580 * Decide how to end... 581 */ 582 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 583 closedbits |= SA_FLAG_TAPE_FROZEN; 584 } else switch (mode) { 585 case SA_MODE_OFFLINE: 586 /* 587 * An 'offline' close is an unconditional release of 588 * frozen && mount conditions, irrespective of whether 589 * these operations succeeded. The reason for this is 590 * to allow at least some kind of programmatic way 591 * around our state getting all fouled up. If somebody 592 * issues an 'offline' command, that will be allowed 593 * to clear state. 594 */ 595 (void) sarewind(periph); 596 (void) saloadunload(periph, FALSE); 597 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 598 break; 599 case SA_MODE_REWIND: 600 /* 601 * If the rewind fails, return an error- if anyone cares, 602 * but not overwriting any previous error. 603 * 604 * We don't clear the notion of mounted here, but we do 605 * clear the notion of frozen if we successfully rewound. 606 */ 607 tmp = sarewind(periph); 608 if (tmp) { 609 if (error != 0) 610 error = tmp; 611 } else { 612 closedbits |= SA_FLAG_TAPE_FROZEN; 613 } 614 break; 615 case SA_MODE_NOREWIND: 616 /* 617 * If we're not rewinding/unloading the tape, find out 618 * whether we need to back up over one of two filemarks 619 * we wrote (if we wrote two filemarks) so that appends 620 * from this point on will be sane. 621 */ 622 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 623 tmp = saspace(periph, -1, SS_FILEMARKS); 624 if (tmp) { 625 xpt_print_path(periph->path); 626 printf("unable to backspace over one of double" 627 " filemarks at end of tape\n"); 628 xpt_print_path(periph->path); 629 printf("it is possible that this device" 630 " needs a SA_QUIRK_1FM quirk set for it\n"); 631 softc->flags |= SA_FLAG_TAPE_FROZEN; 632 } 633 } 634 break; 635 default: 636 xpt_print_path(periph->path); 637 panic("unknown mode 0x%x in saclose", mode); 638 /* NOTREACHED */ 639 break; 640 } 641 642 /* 643 * We wish to note here that there are no more filemarks to be written. 644 */ 645 softc->filemarks = 0; 646 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 647 648 /* 649 * And we are no longer open for business. 650 */ 651 softc->flags &= ~closedbits; 652 653 /* 654 * Inform users if tape state if frozen.... 655 */ 656 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 657 xpt_print_path(periph->path); 658 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 659 "command to clear this state.\n"); 660 } 661 662 /* release the device if it is no longer mounted */ 663 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 664 sareservereleaseunit(periph, FALSE); 665 666 cam_periph_unlock(periph); 667 cam_periph_release(periph); 668 669 return (error); 670 } 671 672 /* 673 * Actually translate the requested transfer into one the physical driver 674 * can understand. The transfer is described by a buf and will include 675 * only one physical transfer. 676 */ 677 static void 678 sastrategy(struct bio *bp) 679 { 680 struct cam_periph *periph; 681 struct sa_softc *softc; 682 int s; 683 684 bp->bio_resid = bp->bio_bcount; 685 if (SA_IS_CTRL(bp->bio_dev)) { 686 biofinish(bp, NULL, EINVAL); 687 return; 688 } 689 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 690 if (periph == NULL) { 691 biofinish(bp, NULL, ENXIO); 692 return; 693 } 694 softc = (struct sa_softc *)periph->softc; 695 696 s = splsoftcam(); 697 698 if (softc->flags & SA_FLAG_INVALID) { 699 splx(s); 700 biofinish(bp, NULL, ENXIO); 701 return; 702 } 703 704 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 705 splx(s); 706 biofinish(bp, NULL, EPERM); 707 return; 708 } 709 710 /* 711 * This should actually never occur as the write(2) 712 * system call traps attempts to write to a read-only 713 * file descriptor. 714 */ 715 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 716 splx(s); 717 biofinish(bp, NULL, EBADF); 718 return; 719 } 720 721 splx(s); 722 723 if (softc->open_pending_mount) { 724 int error = samount(periph, 0, bp->bio_dev); 725 if (error) { 726 biofinish(bp, NULL, ENXIO); 727 return; 728 } 729 saprevent(periph, PR_PREVENT); 730 softc->open_pending_mount = 0; 731 } 732 733 734 /* 735 * If it's a null transfer, return immediately 736 */ 737 if (bp->bio_bcount == 0) { 738 biodone(bp); 739 return; 740 } 741 742 /* valid request? */ 743 if (softc->flags & SA_FLAG_FIXED) { 744 /* 745 * Fixed block device. The byte count must 746 * be a multiple of our block size. 747 */ 748 if (((softc->blk_mask != ~0) && 749 ((bp->bio_bcount & softc->blk_mask) != 0)) || 750 ((softc->blk_mask == ~0) && 751 ((bp->bio_bcount % softc->min_blk) != 0))) { 752 xpt_print_path(periph->path); 753 printf("Invalid request. Fixed block device " 754 "requests must be a multiple " 755 "of %d bytes\n", softc->min_blk); 756 biofinish(bp, NULL, EINVAL); 757 return; 758 } 759 } else if ((bp->bio_bcount > softc->max_blk) || 760 (bp->bio_bcount < softc->min_blk) || 761 (bp->bio_bcount & softc->blk_mask) != 0) { 762 763 xpt_print_path(periph->path); 764 printf("Invalid request. Variable block device " 765 "requests must be "); 766 if (softc->blk_mask != 0) { 767 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 768 } 769 printf("between %d and %d bytes\n", softc->min_blk, 770 softc->max_blk); 771 biofinish(bp, NULL, EINVAL); 772 return; 773 } 774 775 /* 776 * Mask interrupts so that the device cannot be invalidated until 777 * after we are in the queue. Otherwise, we might not properly 778 * clean up one of the buffers. 779 */ 780 s = splbio(); 781 782 /* 783 * Place it at the end of the queue. 784 */ 785 bioq_insert_tail(&softc->bio_queue, bp); 786 softc->queue_count++; 787 #if 0 788 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 789 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 790 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 791 (bp->bio_cmd == BIO_READ)? "read" : "write")); 792 #endif 793 if (softc->queue_count > 1) { 794 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 795 ("sastrategy: queue count now %d\n", softc->queue_count)); 796 } 797 splx(s); 798 799 /* 800 * Schedule ourselves for performing the work. 801 */ 802 xpt_schedule(periph, 1); 803 804 return; 805 } 806 807 808 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 809 if (softc->open_pending_mount) { \ 810 error = samount(periph, 0, dev); \ 811 if (error) { \ 812 break; \ 813 } \ 814 saprevent(periph, PR_PREVENT); \ 815 softc->open_pending_mount = 0; \ 816 } 817 818 static int 819 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 820 { 821 struct cam_periph *periph; 822 struct sa_softc *softc; 823 scsi_space_code spaceop; 824 int didlockperiph = 0; 825 int s; 826 int mode; 827 int error = 0; 828 829 mode = SAMODE(dev); 830 error = 0; /* shut up gcc */ 831 spaceop = 0; /* shut up gcc */ 832 833 periph = (struct cam_periph *)dev->si_drv1; 834 if (periph == NULL) 835 return (ENXIO); 836 837 softc = (struct sa_softc *)periph->softc; 838 839 /* 840 * Check for control mode accesses. We allow MTIOCGET and 841 * MTIOCERRSTAT (but need to be the only one open in order 842 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 843 * and MTCOMP (but need to be the only one accessing this 844 * device to run those). 845 */ 846 847 if (SA_IS_CTRL(dev)) { 848 switch (cmd) { 849 case MTIOCGETEOTMODEL: 850 case MTIOCGET: 851 break; 852 case MTIOCERRSTAT: 853 /* 854 * If the periph isn't already locked, lock it 855 * so our MTIOCERRSTAT can reset latched error stats. 856 * 857 * If the periph is already locked, skip it because 858 * we're just getting status and it'll be up to the 859 * other thread that has this device open to do 860 * an MTIOCERRSTAT that would clear latched status. 861 */ 862 s = splsoftcam(); 863 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 864 error = cam_periph_lock(periph, PRIBIO|PCATCH); 865 if (error != 0) { 866 splx(s); 867 return (error); 868 } 869 didlockperiph = 1; 870 } 871 break; 872 873 case MTIOCTOP: 874 { 875 struct mtop *mt = (struct mtop *) arg; 876 877 /* 878 * Check to make sure it's an OP we can perform 879 * with no media inserted. 880 */ 881 switch (mt->mt_op) { 882 case MTSETBSIZ: 883 case MTSETDNSTY: 884 case MTCOMP: 885 mt = NULL; 886 /* FALLTHROUGH */ 887 default: 888 break; 889 } 890 if (mt != NULL) { 891 break; 892 } 893 /* FALLTHROUGH */ 894 } 895 case MTIOCSETEOTMODEL: 896 /* 897 * We need to acquire the peripheral here rather 898 * than at open time because we are sharing writable 899 * access to data structures. 900 */ 901 s = splsoftcam(); 902 error = cam_periph_lock(periph, PRIBIO|PCATCH); 903 if (error != 0) { 904 splx(s); 905 return (error); 906 } 907 didlockperiph = 1; 908 break; 909 910 default: 911 return (EINVAL); 912 } 913 } 914 915 /* 916 * Find the device that the user is talking about 917 */ 918 switch (cmd) { 919 case MTIOCGET: 920 { 921 struct mtget *g = (struct mtget *)arg; 922 923 /* 924 * If this isn't the control mode device, actually go out 925 * and ask the drive again what it's set to. 926 */ 927 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 928 u_int8_t write_protect; 929 int comp_enabled, comp_supported; 930 error = sagetparams(periph, SA_PARAM_ALL, 931 &softc->media_blksize, &softc->media_density, 932 &softc->media_numblks, &softc->buffer_mode, 933 &write_protect, &softc->speed, &comp_supported, 934 &comp_enabled, &softc->comp_algorithm, NULL); 935 if (error) 936 break; 937 if (write_protect) 938 softc->flags |= SA_FLAG_TAPE_WP; 939 else 940 softc->flags &= ~SA_FLAG_TAPE_WP; 941 softc->flags &= ~(SA_FLAG_COMP_SUPP| 942 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 943 if (comp_supported) { 944 if (softc->saved_comp_algorithm == 0) 945 softc->saved_comp_algorithm = 946 softc->comp_algorithm; 947 softc->flags |= SA_FLAG_COMP_SUPP; 948 if (comp_enabled) 949 softc->flags |= SA_FLAG_COMP_ENABLED; 950 } else 951 softc->flags |= SA_FLAG_COMP_UNSUPP; 952 } 953 bzero(g, sizeof(struct mtget)); 954 g->mt_type = MT_ISAR; 955 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 956 g->mt_comp = MT_COMP_UNSUPP; 957 g->mt_comp0 = MT_COMP_UNSUPP; 958 g->mt_comp1 = MT_COMP_UNSUPP; 959 g->mt_comp2 = MT_COMP_UNSUPP; 960 g->mt_comp3 = MT_COMP_UNSUPP; 961 } else { 962 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 963 g->mt_comp = MT_COMP_DISABLED; 964 } else { 965 g->mt_comp = softc->comp_algorithm; 966 } 967 g->mt_comp0 = softc->comp_algorithm; 968 g->mt_comp1 = softc->comp_algorithm; 969 g->mt_comp2 = softc->comp_algorithm; 970 g->mt_comp3 = softc->comp_algorithm; 971 } 972 g->mt_density = softc->media_density; 973 g->mt_density0 = softc->media_density; 974 g->mt_density1 = softc->media_density; 975 g->mt_density2 = softc->media_density; 976 g->mt_density3 = softc->media_density; 977 g->mt_blksiz = softc->media_blksize; 978 g->mt_blksiz0 = softc->media_blksize; 979 g->mt_blksiz1 = softc->media_blksize; 980 g->mt_blksiz2 = softc->media_blksize; 981 g->mt_blksiz3 = softc->media_blksize; 982 g->mt_fileno = softc->fileno; 983 g->mt_blkno = softc->blkno; 984 g->mt_dsreg = (short) softc->dsreg; 985 /* 986 * Yes, we know that this is likely to overflow 987 */ 988 if (softc->last_resid_was_io) { 989 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 990 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 991 softc->last_io_resid = 0; 992 } 993 } 994 } else { 995 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 996 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 997 softc->last_ctl_resid = 0; 998 } 999 } 1000 } 1001 error = 0; 1002 break; 1003 } 1004 case MTIOCERRSTAT: 1005 { 1006 struct scsi_tape_errors *sep = 1007 &((union mterrstat *)arg)->scsi_errstat; 1008 1009 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1010 ("saioctl: MTIOCERRSTAT\n")); 1011 1012 bzero(sep, sizeof(*sep)); 1013 sep->io_resid = softc->last_io_resid; 1014 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1015 sizeof (sep->io_sense)); 1016 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1017 sizeof (sep->io_cdb)); 1018 sep->ctl_resid = softc->last_ctl_resid; 1019 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1020 sizeof (sep->ctl_sense)); 1021 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1022 sizeof (sep->ctl_cdb)); 1023 1024 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1025 didlockperiph) 1026 bzero((caddr_t) &softc->errinfo, 1027 sizeof (softc->errinfo)); 1028 error = 0; 1029 break; 1030 } 1031 case MTIOCTOP: 1032 { 1033 struct mtop *mt; 1034 int count; 1035 1036 PENDING_MOUNT_CHECK(softc, periph, dev); 1037 1038 mt = (struct mtop *)arg; 1039 1040 1041 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1042 ("saioctl: op=0x%x count=0x%x\n", 1043 mt->mt_op, mt->mt_count)); 1044 1045 count = mt->mt_count; 1046 switch (mt->mt_op) { 1047 case MTWEOF: /* write an end-of-file marker */ 1048 /* 1049 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1050 * flag because by keeping track of filemarks 1051 * we have last written we know ehether or not 1052 * we need to write more when we close the device. 1053 */ 1054 error = sawritefilemarks(periph, count, FALSE); 1055 break; 1056 case MTWSS: /* write a setmark */ 1057 error = sawritefilemarks(periph, count, TRUE); 1058 break; 1059 case MTBSR: /* backward space record */ 1060 case MTFSR: /* forward space record */ 1061 case MTBSF: /* backward space file */ 1062 case MTFSF: /* forward space file */ 1063 case MTBSS: /* backward space setmark */ 1064 case MTFSS: /* forward space setmark */ 1065 case MTEOD: /* space to end of recorded medium */ 1066 { 1067 int nmarks; 1068 1069 spaceop = SS_FILEMARKS; 1070 nmarks = softc->filemarks; 1071 error = sacheckeod(periph); 1072 if (error) { 1073 xpt_print_path(periph->path); 1074 printf("EOD check prior to spacing failed\n"); 1075 softc->flags |= SA_FLAG_EIO_PENDING; 1076 break; 1077 } 1078 nmarks -= softc->filemarks; 1079 switch(mt->mt_op) { 1080 case MTBSR: 1081 count = -count; 1082 /* FALLTHROUGH */ 1083 case MTFSR: 1084 spaceop = SS_BLOCKS; 1085 break; 1086 case MTBSF: 1087 count = -count; 1088 /* FALLTHROUGH */ 1089 case MTFSF: 1090 break; 1091 case MTBSS: 1092 count = -count; 1093 /* FALLTHROUGH */ 1094 case MTFSS: 1095 spaceop = SS_SETMARKS; 1096 break; 1097 case MTEOD: 1098 spaceop = SS_EOD; 1099 count = 0; 1100 nmarks = 0; 1101 break; 1102 default: 1103 error = EINVAL; 1104 break; 1105 } 1106 if (error) 1107 break; 1108 1109 nmarks = softc->filemarks; 1110 /* 1111 * XXX: Why are we checking again? 1112 */ 1113 error = sacheckeod(periph); 1114 if (error) 1115 break; 1116 nmarks -= softc->filemarks; 1117 error = saspace(periph, count - nmarks, spaceop); 1118 /* 1119 * At this point, clear that we've written the tape 1120 * and that we've written any filemarks. We really 1121 * don't know what the applications wishes to do next- 1122 * the sacheckeod's will make sure we terminated the 1123 * tape correctly if we'd been writing, but the next 1124 * action the user application takes will set again 1125 * whether we need to write filemarks. 1126 */ 1127 softc->flags &= 1128 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1129 softc->filemarks = 0; 1130 break; 1131 } 1132 case MTREW: /* rewind */ 1133 PENDING_MOUNT_CHECK(softc, periph, dev); 1134 (void) sacheckeod(periph); 1135 error = sarewind(periph); 1136 /* see above */ 1137 softc->flags &= 1138 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1139 softc->flags &= ~SA_FLAG_ERR_PENDING; 1140 softc->filemarks = 0; 1141 break; 1142 case MTERASE: /* erase */ 1143 PENDING_MOUNT_CHECK(softc, periph, dev); 1144 error = saerase(periph, count); 1145 softc->flags &= 1146 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1147 softc->flags &= ~SA_FLAG_ERR_PENDING; 1148 break; 1149 case MTRETENS: /* re-tension tape */ 1150 PENDING_MOUNT_CHECK(softc, periph, dev); 1151 error = saretension(periph); 1152 softc->flags &= 1153 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1154 softc->flags &= ~SA_FLAG_ERR_PENDING; 1155 break; 1156 case MTOFFL: /* rewind and put the drive offline */ 1157 1158 PENDING_MOUNT_CHECK(softc, periph, dev); 1159 1160 (void) sacheckeod(periph); 1161 /* see above */ 1162 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1163 softc->filemarks = 0; 1164 1165 error = sarewind(periph); 1166 /* clear the frozen flag anyway */ 1167 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1168 1169 /* 1170 * Be sure to allow media removal before ejecting. 1171 */ 1172 1173 saprevent(periph, PR_ALLOW); 1174 if (error == 0) { 1175 error = saloadunload(periph, FALSE); 1176 if (error == 0) { 1177 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1178 } 1179 } 1180 break; 1181 1182 case MTNOP: /* no operation, sets status only */ 1183 case MTCACHE: /* enable controller cache */ 1184 case MTNOCACHE: /* disable controller cache */ 1185 error = 0; 1186 break; 1187 1188 case MTSETBSIZ: /* Set block size for device */ 1189 1190 PENDING_MOUNT_CHECK(softc, periph, dev); 1191 1192 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1193 0, 0, 0); 1194 if (error == 0) { 1195 softc->last_media_blksize = 1196 softc->media_blksize; 1197 softc->media_blksize = count; 1198 if (count) { 1199 softc->flags |= SA_FLAG_FIXED; 1200 if (powerof2(count)) { 1201 softc->blk_shift = 1202 ffs(count) - 1; 1203 softc->blk_mask = count - 1; 1204 } else { 1205 softc->blk_mask = ~0; 1206 softc->blk_shift = 0; 1207 } 1208 /* 1209 * Make the user's desire 'persistent'. 1210 */ 1211 softc->quirks &= ~SA_QUIRK_VARIABLE; 1212 softc->quirks |= SA_QUIRK_FIXED; 1213 } else { 1214 softc->flags &= ~SA_FLAG_FIXED; 1215 if (softc->max_blk == 0) { 1216 softc->max_blk = ~0; 1217 } 1218 softc->blk_shift = 0; 1219 if (softc->blk_gran != 0) { 1220 softc->blk_mask = 1221 softc->blk_gran - 1; 1222 } else { 1223 softc->blk_mask = 0; 1224 } 1225 /* 1226 * Make the user's desire 'persistent'. 1227 */ 1228 softc->quirks |= SA_QUIRK_VARIABLE; 1229 softc->quirks &= ~SA_QUIRK_FIXED; 1230 } 1231 } 1232 break; 1233 case MTSETDNSTY: /* Set density for device and mode */ 1234 PENDING_MOUNT_CHECK(softc, periph, dev); 1235 1236 if (count > UCHAR_MAX) { 1237 error = EINVAL; 1238 break; 1239 } else { 1240 error = sasetparams(periph, SA_PARAM_DENSITY, 1241 0, count, 0, 0); 1242 } 1243 break; 1244 case MTCOMP: /* enable compression */ 1245 PENDING_MOUNT_CHECK(softc, periph, dev); 1246 /* 1247 * Some devices don't support compression, and 1248 * don't like it if you ask them for the 1249 * compression page. 1250 */ 1251 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1252 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1253 error = ENODEV; 1254 break; 1255 } 1256 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1257 0, 0, count, SF_NO_PRINT); 1258 break; 1259 default: 1260 error = EINVAL; 1261 } 1262 break; 1263 } 1264 case MTIOCIEOT: 1265 case MTIOCEEOT: 1266 error = 0; 1267 break; 1268 case MTIOCRDSPOS: 1269 PENDING_MOUNT_CHECK(softc, periph, dev); 1270 error = sardpos(periph, 0, (u_int32_t *) arg); 1271 break; 1272 case MTIOCRDHPOS: 1273 PENDING_MOUNT_CHECK(softc, periph, dev); 1274 error = sardpos(periph, 1, (u_int32_t *) arg); 1275 break; 1276 case MTIOCSLOCATE: 1277 PENDING_MOUNT_CHECK(softc, periph, dev); 1278 error = sasetpos(periph, 0, (u_int32_t *) arg); 1279 break; 1280 case MTIOCHLOCATE: 1281 PENDING_MOUNT_CHECK(softc, periph, dev); 1282 error = sasetpos(periph, 1, (u_int32_t *) arg); 1283 break; 1284 case MTIOCGETEOTMODEL: 1285 error = 0; 1286 if (softc->quirks & SA_QUIRK_1FM) 1287 mode = 1; 1288 else 1289 mode = 2; 1290 *((u_int32_t *) arg) = mode; 1291 break; 1292 case MTIOCSETEOTMODEL: 1293 error = 0; 1294 switch (*((u_int32_t *) arg)) { 1295 case 1: 1296 softc->quirks &= ~SA_QUIRK_2FM; 1297 softc->quirks |= SA_QUIRK_1FM; 1298 break; 1299 case 2: 1300 softc->quirks &= ~SA_QUIRK_1FM; 1301 softc->quirks |= SA_QUIRK_2FM; 1302 break; 1303 default: 1304 error = EINVAL; 1305 break; 1306 } 1307 break; 1308 default: 1309 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1310 break; 1311 } 1312 1313 /* 1314 * Check to see if we cleared a frozen state 1315 */ 1316 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1317 switch(cmd) { 1318 case MTIOCRDSPOS: 1319 case MTIOCRDHPOS: 1320 case MTIOCSLOCATE: 1321 case MTIOCHLOCATE: 1322 softc->fileno = (daddr_t) -1; 1323 softc->blkno = (daddr_t) -1; 1324 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1325 xpt_print_path(periph->path); 1326 printf("tape state now unfrozen.\n"); 1327 break; 1328 default: 1329 break; 1330 } 1331 } 1332 if (didlockperiph) { 1333 cam_periph_unlock(periph); 1334 } 1335 return (error); 1336 } 1337 1338 static void 1339 sainit(void) 1340 { 1341 cam_status status; 1342 struct cam_path *path; 1343 1344 /* 1345 * Install a global async callback. 1346 */ 1347 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1348 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1349 1350 if (status == CAM_REQ_CMP) { 1351 /* Register the async callbacks of interrest */ 1352 struct ccb_setasync csa; /* 1353 * This is an immediate CCB, 1354 * so using the stack is OK 1355 */ 1356 xpt_setup_ccb(&csa.ccb_h, path, 5); 1357 csa.ccb_h.func_code = XPT_SASYNC_CB; 1358 csa.event_enable = AC_FOUND_DEVICE; 1359 csa.callback = saasync; 1360 csa.callback_arg = NULL; 1361 xpt_action((union ccb *)&csa); 1362 status = csa.ccb_h.status; 1363 xpt_free_path(path); 1364 } 1365 1366 if (status != CAM_REQ_CMP) { 1367 printf("sa: Failed to attach master async callback " 1368 "due to status 0x%x!\n", status); 1369 } 1370 } 1371 1372 static void 1373 saoninvalidate(struct cam_periph *periph) 1374 { 1375 struct sa_softc *softc; 1376 struct ccb_setasync csa; 1377 int s; 1378 1379 softc = (struct sa_softc *)periph->softc; 1380 1381 /* 1382 * De-register any async callbacks. 1383 */ 1384 xpt_setup_ccb(&csa.ccb_h, periph->path, 1385 /* priority */ 5); 1386 csa.ccb_h.func_code = XPT_SASYNC_CB; 1387 csa.event_enable = 0; 1388 csa.callback = saasync; 1389 csa.callback_arg = periph; 1390 xpt_action((union ccb *)&csa); 1391 1392 softc->flags |= SA_FLAG_INVALID; 1393 1394 /* 1395 * Although the oninvalidate() routines are always called at 1396 * splsoftcam, we need to be at splbio() here to keep the buffer 1397 * queue from being modified while we traverse it. 1398 */ 1399 s = splbio(); 1400 1401 /* 1402 * Return all queued I/O with ENXIO. 1403 * XXX Handle any transactions queued to the card 1404 * with XPT_ABORT_CCB. 1405 */ 1406 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1407 softc->queue_count = 0; 1408 splx(s); 1409 1410 xpt_print_path(periph->path); 1411 printf("lost device\n"); 1412 1413 } 1414 1415 static void 1416 sacleanup(struct cam_periph *periph) 1417 { 1418 struct sa_softc *softc; 1419 int i; 1420 1421 softc = (struct sa_softc *)periph->softc; 1422 1423 devstat_remove_entry(softc->device_stats); 1424 1425 destroy_dev(softc->devs.ctl_dev); 1426 1427 for (i = 0; i < SA_NUM_MODES; i++) { 1428 destroy_dev(softc->devs.mode_devs[i].r_dev); 1429 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1430 destroy_dev(softc->devs.mode_devs[i].er_dev); 1431 } 1432 1433 xpt_print_path(periph->path); 1434 printf("removing device entry\n"); 1435 free(softc, M_SCSISA); 1436 } 1437 1438 static void 1439 saasync(void *callback_arg, u_int32_t code, 1440 struct cam_path *path, void *arg) 1441 { 1442 struct cam_periph *periph; 1443 1444 periph = (struct cam_periph *)callback_arg; 1445 switch (code) { 1446 case AC_FOUND_DEVICE: 1447 { 1448 struct ccb_getdev *cgd; 1449 cam_status status; 1450 1451 cgd = (struct ccb_getdev *)arg; 1452 if (cgd == NULL) 1453 break; 1454 1455 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1456 break; 1457 1458 /* 1459 * Allocate a peripheral instance for 1460 * this device and start the probe 1461 * process. 1462 */ 1463 status = cam_periph_alloc(saregister, saoninvalidate, 1464 sacleanup, sastart, 1465 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1466 saasync, AC_FOUND_DEVICE, cgd); 1467 1468 if (status != CAM_REQ_CMP 1469 && status != CAM_REQ_INPROG) 1470 printf("saasync: Unable to probe new device " 1471 "due to status 0x%x\n", status); 1472 break; 1473 } 1474 default: 1475 cam_periph_async(periph, code, path, arg); 1476 break; 1477 } 1478 } 1479 1480 static cam_status 1481 saregister(struct cam_periph *periph, void *arg) 1482 { 1483 struct sa_softc *softc; 1484 struct ccb_setasync csa; 1485 struct ccb_getdev *cgd; 1486 caddr_t match; 1487 int i; 1488 1489 cgd = (struct ccb_getdev *)arg; 1490 if (periph == NULL) { 1491 printf("saregister: periph was NULL!!\n"); 1492 return (CAM_REQ_CMP_ERR); 1493 } 1494 1495 if (cgd == NULL) { 1496 printf("saregister: no getdev CCB, can't register device\n"); 1497 return (CAM_REQ_CMP_ERR); 1498 } 1499 1500 softc = (struct sa_softc *) 1501 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1502 if (softc == NULL) { 1503 printf("saregister: Unable to probe new device. " 1504 "Unable to allocate softc\n"); 1505 return (CAM_REQ_CMP_ERR); 1506 } 1507 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1508 softc->state = SA_STATE_NORMAL; 1509 softc->fileno = (daddr_t) -1; 1510 softc->blkno = (daddr_t) -1; 1511 1512 bioq_init(&softc->bio_queue); 1513 periph->softc = softc; 1514 1515 /* 1516 * See if this device has any quirks. 1517 */ 1518 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1519 (caddr_t)sa_quirk_table, 1520 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1521 sizeof(*sa_quirk_table), scsi_inquiry_match); 1522 1523 if (match != NULL) { 1524 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1525 softc->last_media_blksize = 1526 ((struct sa_quirk_entry *)match)->prefblk; 1527 #ifdef CAMDEBUG 1528 xpt_print_path(periph->path); 1529 printf("found quirk entry %d\n", (int) 1530 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1531 #endif 1532 } else 1533 softc->quirks = SA_QUIRK_NONE; 1534 1535 /* 1536 * The SA driver supports a blocksize, but we don't know the 1537 * blocksize until we media is inserted. So, set a flag to 1538 * indicate that the blocksize is unavailable right now. 1539 */ 1540 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1541 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1542 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1543 1544 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1545 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1546 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1547 softc->devs.ctl_dev->si_drv1 = periph; 1548 1549 for (i = 0; i < SA_NUM_MODES; i++) { 1550 1551 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1552 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1553 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1554 periph->periph_name, periph->unit_number, i); 1555 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1556 1557 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1558 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1559 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1560 periph->periph_name, periph->unit_number, i); 1561 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1562 1563 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1564 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1565 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1566 periph->periph_name, periph->unit_number, i); 1567 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1568 1569 /* 1570 * Make the (well known) aliases for the first mode. 1571 */ 1572 if (i == 0) { 1573 struct cdev *alias; 1574 1575 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1576 "%s%d", periph->periph_name, periph->unit_number); 1577 alias->si_drv1 = periph; 1578 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1579 "n%s%d", periph->periph_name, periph->unit_number); 1580 alias->si_drv1 = periph; 1581 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1582 "e%s%d", periph->periph_name, periph->unit_number); 1583 alias->si_drv1 = periph; 1584 } 1585 } 1586 1587 /* 1588 * Add an async callback so that we get 1589 * notified if this device goes away. 1590 */ 1591 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1592 csa.ccb_h.func_code = XPT_SASYNC_CB; 1593 csa.event_enable = AC_LOST_DEVICE; 1594 csa.callback = saasync; 1595 csa.callback_arg = periph; 1596 xpt_action((union ccb *)&csa); 1597 1598 xpt_announce_periph(periph, NULL); 1599 1600 return (CAM_REQ_CMP); 1601 } 1602 1603 static void 1604 sastart(struct cam_periph *periph, union ccb *start_ccb) 1605 { 1606 struct sa_softc *softc; 1607 1608 softc = (struct sa_softc *)periph->softc; 1609 1610 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1611 1612 1613 switch (softc->state) { 1614 case SA_STATE_NORMAL: 1615 { 1616 /* Pull a buffer from the queue and get going on it */ 1617 struct bio *bp; 1618 int s; 1619 1620 /* 1621 * See if there is a buf with work for us to do.. 1622 */ 1623 s = splbio(); 1624 bp = bioq_first(&softc->bio_queue); 1625 if (periph->immediate_priority <= periph->pinfo.priority) { 1626 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1627 ("queuing for immediate ccb\n")); 1628 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1629 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1630 periph_links.sle); 1631 periph->immediate_priority = CAM_PRIORITY_NONE; 1632 splx(s); 1633 wakeup(&periph->ccb_list); 1634 } else if (bp == NULL) { 1635 splx(s); 1636 xpt_release_ccb(start_ccb); 1637 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1638 struct bio *done_bp; 1639 again: 1640 softc->queue_count--; 1641 bioq_remove(&softc->bio_queue, bp); 1642 bp->bio_resid = bp->bio_bcount; 1643 done_bp = bp; 1644 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1645 /* 1646 * We now just clear errors in this case 1647 * and let the residual be the notifier. 1648 */ 1649 bp->bio_error = 0; 1650 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1651 /* 1652 * This can only happen if we're reading 1653 * in fixed length mode. In this case, 1654 * we dump the rest of the list the 1655 * same way. 1656 */ 1657 bp->bio_error = 0; 1658 if (bioq_first(&softc->bio_queue) != NULL) { 1659 biodone(done_bp); 1660 goto again; 1661 } 1662 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1663 bp->bio_error = EIO; 1664 bp->bio_flags |= BIO_ERROR; 1665 } 1666 bp = bioq_first(&softc->bio_queue); 1667 /* 1668 * Only if we have no other buffers queued up 1669 * do we clear the pending error flag. 1670 */ 1671 if (bp == NULL) 1672 softc->flags &= ~SA_FLAG_ERR_PENDING; 1673 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1674 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1675 "%d more buffers queued up\n", 1676 (softc->flags & SA_FLAG_ERR_PENDING), 1677 (bp != NULL)? "not " : " ", softc->queue_count)); 1678 splx(s); 1679 xpt_release_ccb(start_ccb); 1680 biodone(done_bp); 1681 } else { 1682 u_int32_t length; 1683 1684 bioq_remove(&softc->bio_queue, bp); 1685 softc->queue_count--; 1686 1687 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1688 if (softc->blk_shift != 0) { 1689 length = 1690 bp->bio_bcount >> softc->blk_shift; 1691 } else if (softc->media_blksize != 0) { 1692 length = bp->bio_bcount / 1693 softc->media_blksize; 1694 } else { 1695 bp->bio_error = EIO; 1696 xpt_print_path(periph->path); 1697 printf("zero blocksize for " 1698 "FIXED length writes?\n"); 1699 splx(s); 1700 biodone(bp); 1701 break; 1702 } 1703 #if 0 1704 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1705 ("issuing a %d fixed record %s\n", 1706 length, (bp->bio_cmd == BIO_READ)? "read" : 1707 "write")); 1708 #endif 1709 } else { 1710 length = bp->bio_bcount; 1711 #if 0 1712 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1713 ("issuing a %d variable byte %s\n", 1714 length, (bp->bio_cmd == BIO_READ)? "read" : 1715 "write")); 1716 #endif 1717 } 1718 devstat_start_transaction_bio(softc->device_stats, bp); 1719 /* 1720 * Some people have theorized that we should 1721 * suppress illegal length indication if we are 1722 * running in variable block mode so that we don't 1723 * have to request sense every time our requested 1724 * block size is larger than the written block. 1725 * The residual information from the ccb allows 1726 * us to identify this situation anyway. The only 1727 * problem with this is that we will not get 1728 * information about blocks that are larger than 1729 * our read buffer unless we set the block size 1730 * in the mode page to something other than 0. 1731 * 1732 * I believe that this is a non-issue. If user apps 1733 * don't adjust their read size to match our record 1734 * size, that's just life. Anyway, the typical usage 1735 * would be to issue, e.g., 64KB reads and occasionally 1736 * have to do deal with 512 byte or 1KB intermediate 1737 * records. 1738 */ 1739 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1740 MTIO_DSREG_RD : MTIO_DSREG_WR; 1741 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1742 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1743 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1744 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1745 IO_TIMEOUT); 1746 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1747 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1748 start_ccb->ccb_h.ccb_bp = bp; 1749 bp = bioq_first(&softc->bio_queue); 1750 splx(s); 1751 xpt_action(start_ccb); 1752 } 1753 1754 if (bp != NULL) { 1755 /* Have more work to do, so ensure we stay scheduled */ 1756 xpt_schedule(periph, 1); 1757 } 1758 break; 1759 } 1760 case SA_STATE_ABNORMAL: 1761 default: 1762 panic("state 0x%x in sastart", softc->state); 1763 break; 1764 } 1765 } 1766 1767 1768 static void 1769 sadone(struct cam_periph *periph, union ccb *done_ccb) 1770 { 1771 struct sa_softc *softc; 1772 struct ccb_scsiio *csio; 1773 1774 softc = (struct sa_softc *)periph->softc; 1775 csio = &done_ccb->csio; 1776 switch (CCB_Type(csio)) { 1777 case SA_CCB_BUFFER_IO: 1778 { 1779 struct bio *bp; 1780 int error; 1781 1782 softc->dsreg = MTIO_DSREG_REST; 1783 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1784 error = 0; 1785 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1786 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1787 /* 1788 * A retry was scheduled, so just return. 1789 */ 1790 return; 1791 } 1792 } 1793 1794 if (error == EIO) { 1795 int s; 1796 1797 /* 1798 * Catastrophic error. Mark the tape as frozen 1799 * (we no longer know tape position). 1800 * 1801 * Return all queued I/O with EIO, and unfreeze 1802 * our queue so that future transactions that 1803 * attempt to fix this problem can get to the 1804 * device. 1805 * 1806 */ 1807 1808 s = splbio(); 1809 softc->flags |= SA_FLAG_TAPE_FROZEN; 1810 bioq_flush(&softc->bio_queue, NULL, EIO); 1811 splx(s); 1812 } 1813 if (error != 0) { 1814 bp->bio_resid = bp->bio_bcount; 1815 bp->bio_error = error; 1816 bp->bio_flags |= BIO_ERROR; 1817 /* 1818 * In the error case, position is updated in saerror. 1819 */ 1820 } else { 1821 bp->bio_resid = csio->resid; 1822 bp->bio_error = 0; 1823 if (csio->resid != 0) { 1824 bp->bio_flags |= BIO_ERROR; 1825 } 1826 if (bp->bio_cmd == BIO_WRITE) { 1827 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1828 softc->filemarks = 0; 1829 } 1830 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1831 (softc->blkno != (daddr_t) -1)) { 1832 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1833 u_int32_t l; 1834 if (softc->blk_shift != 0) { 1835 l = bp->bio_bcount >> 1836 softc->blk_shift; 1837 } else { 1838 l = bp->bio_bcount / 1839 softc->media_blksize; 1840 } 1841 softc->blkno += (daddr_t) l; 1842 } else { 1843 softc->blkno++; 1844 } 1845 } 1846 } 1847 /* 1848 * If we had an error (immediate or pending), 1849 * release the device queue now. 1850 */ 1851 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1852 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1853 #ifdef CAMDEBUG 1854 if (error || bp->bio_resid) { 1855 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1856 ("error %d resid %ld count %ld\n", error, 1857 bp->bio_resid, bp->bio_bcount)); 1858 } 1859 #endif 1860 biofinish(bp, softc->device_stats, 0); 1861 break; 1862 } 1863 case SA_CCB_WAITING: 1864 { 1865 /* Caller will release the CCB */ 1866 wakeup(&done_ccb->ccb_h.cbfcnp); 1867 return; 1868 } 1869 } 1870 xpt_release_ccb(done_ccb); 1871 } 1872 1873 /* 1874 * Mount the tape (make sure it's ready for I/O). 1875 */ 1876 static int 1877 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1878 { 1879 struct sa_softc *softc; 1880 union ccb *ccb; 1881 int error; 1882 1883 /* 1884 * oflags can be checked for 'kind' of open (read-only check) - later 1885 * dev can be checked for a control-mode or compression open - later 1886 */ 1887 UNUSED_PARAMETER(oflags); 1888 UNUSED_PARAMETER(dev); 1889 1890 1891 softc = (struct sa_softc *)periph->softc; 1892 1893 /* 1894 * This should determine if something has happend since the last 1895 * open/mount that would invalidate the mount. We do *not* want 1896 * to retry this command- we just want the status. But we only 1897 * do this if we're mounted already- if we're not mounted, 1898 * we don't care about the unit read state and can instead use 1899 * this opportunity to attempt to reserve the tape unit. 1900 */ 1901 1902 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1903 ccb = cam_periph_getccb(periph, 1); 1904 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1905 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1906 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1907 softc->device_stats); 1908 QFRLS(ccb); 1909 if (error == ENXIO) { 1910 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1911 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1912 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1913 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1914 softc->device_stats); 1915 QFRLS(ccb); 1916 } else if (error) { 1917 /* 1918 * We don't need to freeze the tape because we 1919 * will now attempt to rewind/load it. 1920 */ 1921 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1922 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1923 xpt_print_path(periph->path); 1924 printf("error %d on TUR in samount\n", error); 1925 } 1926 } 1927 } else { 1928 error = sareservereleaseunit(periph, TRUE); 1929 if (error) { 1930 return (error); 1931 } 1932 ccb = cam_periph_getccb(periph, 1); 1933 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1934 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1935 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1936 softc->device_stats); 1937 QFRLS(ccb); 1938 } 1939 1940 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1941 struct scsi_read_block_limits_data *rblim = NULL; 1942 int comp_enabled, comp_supported; 1943 u_int8_t write_protect, guessing = 0; 1944 1945 /* 1946 * Clear out old state. 1947 */ 1948 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1949 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1950 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1951 softc->filemarks = 0; 1952 1953 /* 1954 * *Very* first off, make sure we're loaded to BOT. 1955 */ 1956 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1957 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1958 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1959 softc->device_stats); 1960 QFRLS(ccb); 1961 1962 /* 1963 * In case this doesn't work, do a REWIND instead 1964 */ 1965 if (error) { 1966 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1967 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1968 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1969 softc->device_stats); 1970 QFRLS(ccb); 1971 } 1972 if (error) { 1973 xpt_release_ccb(ccb); 1974 goto exit; 1975 } 1976 1977 /* 1978 * Do a dummy test read to force access to the 1979 * media so that the drive will really know what's 1980 * there. We actually don't really care what the 1981 * blocksize on tape is and don't expect to really 1982 * read a full record. 1983 */ 1984 rblim = (struct scsi_read_block_limits_data *) 1985 malloc(8192, M_SCSISA, M_WAITOK); 1986 if (rblim == NULL) { 1987 xpt_print_path(periph->path); 1988 printf("no memory for test read\n"); 1989 xpt_release_ccb(ccb); 1990 error = ENOMEM; 1991 goto exit; 1992 } 1993 1994 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1995 scsi_sa_read_write(&ccb->csio, 0, sadone, 1996 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1997 (void *) rblim, 8192, SSD_FULL_SIZE, 1998 IO_TIMEOUT); 1999 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2000 softc->device_stats); 2001 QFRLS(ccb); 2002 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2003 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2004 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2005 SF_NO_PRINT | SF_RETRY_UA, 2006 softc->device_stats); 2007 QFRLS(ccb); 2008 if (error) { 2009 xpt_print_path(periph->path); 2010 printf("unable to rewind after test read\n"); 2011 xpt_release_ccb(ccb); 2012 goto exit; 2013 } 2014 } 2015 2016 /* 2017 * Next off, determine block limits. 2018 */ 2019 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2020 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2021 2022 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2023 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2024 2025 QFRLS(ccb); 2026 xpt_release_ccb(ccb); 2027 2028 if (error != 0) { 2029 /* 2030 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2031 * a MANDATORY command. Anyway- it doesn't matter- 2032 * we can proceed anyway. 2033 */ 2034 softc->blk_gran = 0; 2035 softc->max_blk = ~0; 2036 softc->min_blk = 0; 2037 } else { 2038 if (softc->scsi_rev >= SCSI_REV_SPC) { 2039 softc->blk_gran = RBL_GRAN(rblim); 2040 } else { 2041 softc->blk_gran = 0; 2042 } 2043 /* 2044 * We take max_blk == min_blk to mean a default to 2045 * fixed mode- but note that whatever we get out of 2046 * sagetparams below will actually determine whether 2047 * we are actually *in* fixed mode. 2048 */ 2049 softc->max_blk = scsi_3btoul(rblim->maximum); 2050 softc->min_blk = scsi_2btoul(rblim->minimum); 2051 2052 2053 } 2054 /* 2055 * Next, perform a mode sense to determine 2056 * current density, blocksize, compression etc. 2057 */ 2058 error = sagetparams(periph, SA_PARAM_ALL, 2059 &softc->media_blksize, 2060 &softc->media_density, 2061 &softc->media_numblks, 2062 &softc->buffer_mode, &write_protect, 2063 &softc->speed, &comp_supported, 2064 &comp_enabled, &softc->comp_algorithm, 2065 NULL); 2066 2067 if (error != 0) { 2068 /* 2069 * We could work a little harder here. We could 2070 * adjust our attempts to get information. It 2071 * might be an ancient tape drive. If someone 2072 * nudges us, we'll do that. 2073 */ 2074 goto exit; 2075 } 2076 2077 /* 2078 * If no quirk has determined that this is a device that is 2079 * preferred to be in fixed or variable mode, now is the time 2080 * to find out. 2081 */ 2082 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2083 guessing = 1; 2084 /* 2085 * This could be expensive to find out. Luckily we 2086 * only need to do this once. If we start out in 2087 * 'default' mode, try and set ourselves to one 2088 * of the densities that would determine a wad 2089 * of other stuff. Go from highest to lowest. 2090 */ 2091 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2092 int i; 2093 static u_int8_t ctry[] = { 2094 SCSI_DENSITY_HALFINCH_PE, 2095 SCSI_DENSITY_HALFINCH_6250C, 2096 SCSI_DENSITY_HALFINCH_6250, 2097 SCSI_DENSITY_HALFINCH_1600, 2098 SCSI_DENSITY_HALFINCH_800, 2099 SCSI_DENSITY_QIC_4GB, 2100 SCSI_DENSITY_QIC_2GB, 2101 SCSI_DENSITY_QIC_525_320, 2102 SCSI_DENSITY_QIC_150, 2103 SCSI_DENSITY_QIC_120, 2104 SCSI_DENSITY_QIC_24, 2105 SCSI_DENSITY_QIC_11_9TRK, 2106 SCSI_DENSITY_QIC_11_4TRK, 2107 SCSI_DENSITY_QIC_1320, 2108 SCSI_DENSITY_QIC_3080, 2109 0 2110 }; 2111 for (i = 0; ctry[i]; i++) { 2112 error = sasetparams(periph, 2113 SA_PARAM_DENSITY, 0, ctry[i], 2114 0, SF_NO_PRINT); 2115 if (error == 0) { 2116 softc->media_density = ctry[i]; 2117 break; 2118 } 2119 } 2120 } 2121 switch (softc->media_density) { 2122 case SCSI_DENSITY_QIC_11_4TRK: 2123 case SCSI_DENSITY_QIC_11_9TRK: 2124 case SCSI_DENSITY_QIC_24: 2125 case SCSI_DENSITY_QIC_120: 2126 case SCSI_DENSITY_QIC_150: 2127 case SCSI_DENSITY_QIC_525_320: 2128 case SCSI_DENSITY_QIC_1320: 2129 case SCSI_DENSITY_QIC_3080: 2130 softc->quirks &= ~SA_QUIRK_2FM; 2131 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2132 softc->last_media_blksize = 512; 2133 break; 2134 case SCSI_DENSITY_QIC_4GB: 2135 case SCSI_DENSITY_QIC_2GB: 2136 softc->quirks &= ~SA_QUIRK_2FM; 2137 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2138 softc->last_media_blksize = 1024; 2139 break; 2140 default: 2141 softc->last_media_blksize = 2142 softc->media_blksize; 2143 softc->quirks |= SA_QUIRK_VARIABLE; 2144 break; 2145 } 2146 } 2147 2148 /* 2149 * If no quirk has determined that this is a device that needs 2150 * to have 2 Filemarks at EOD, now is the time to find out. 2151 */ 2152 2153 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2154 switch (softc->media_density) { 2155 case SCSI_DENSITY_HALFINCH_800: 2156 case SCSI_DENSITY_HALFINCH_1600: 2157 case SCSI_DENSITY_HALFINCH_6250: 2158 case SCSI_DENSITY_HALFINCH_6250C: 2159 case SCSI_DENSITY_HALFINCH_PE: 2160 softc->quirks &= ~SA_QUIRK_1FM; 2161 softc->quirks |= SA_QUIRK_2FM; 2162 break; 2163 default: 2164 break; 2165 } 2166 } 2167 2168 /* 2169 * Now validate that some info we got makes sense. 2170 */ 2171 if ((softc->max_blk < softc->media_blksize) || 2172 (softc->min_blk > softc->media_blksize && 2173 softc->media_blksize)) { 2174 xpt_print_path(periph->path); 2175 printf("BLOCK LIMITS (%d..%d) could not match current " 2176 "block settings (%d)- adjusting\n", softc->min_blk, 2177 softc->max_blk, softc->media_blksize); 2178 softc->max_blk = softc->min_blk = 2179 softc->media_blksize; 2180 } 2181 2182 /* 2183 * Now put ourselves into the right frame of mind based 2184 * upon quirks... 2185 */ 2186 tryagain: 2187 /* 2188 * If we want to be in FIXED mode and our current blocksize 2189 * is not equal to our last blocksize (if nonzero), try and 2190 * set ourselves to this last blocksize (as the 'preferred' 2191 * block size). The initial quirkmatch at registry sets the 2192 * initial 'last' blocksize. If, for whatever reason, this 2193 * 'last' blocksize is zero, set the blocksize to 512, 2194 * or min_blk if that's larger. 2195 */ 2196 if ((softc->quirks & SA_QUIRK_FIXED) && 2197 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2198 (softc->media_blksize != softc->last_media_blksize)) { 2199 softc->media_blksize = softc->last_media_blksize; 2200 if (softc->media_blksize == 0) { 2201 softc->media_blksize = 512; 2202 if (softc->media_blksize < softc->min_blk) { 2203 softc->media_blksize = softc->min_blk; 2204 } 2205 } 2206 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2207 softc->media_blksize, 0, 0, SF_NO_PRINT); 2208 if (error) { 2209 xpt_print_path(periph->path); 2210 printf("unable to set fixed blocksize to %d\n", 2211 softc->media_blksize); 2212 goto exit; 2213 } 2214 } 2215 2216 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2217 (softc->media_blksize != 0)) { 2218 softc->last_media_blksize = softc->media_blksize; 2219 softc->media_blksize = 0; 2220 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2221 0, 0, 0, SF_NO_PRINT); 2222 if (error) { 2223 /* 2224 * If this fails and we were guessing, just 2225 * assume that we got it wrong and go try 2226 * fixed block mode. Don't even check against 2227 * density code at this point. 2228 */ 2229 if (guessing) { 2230 softc->quirks &= ~SA_QUIRK_VARIABLE; 2231 softc->quirks |= SA_QUIRK_FIXED; 2232 if (softc->last_media_blksize == 0) 2233 softc->last_media_blksize = 512; 2234 goto tryagain; 2235 } 2236 xpt_print_path(periph->path); 2237 printf("unable to set variable blocksize\n"); 2238 goto exit; 2239 } 2240 } 2241 2242 /* 2243 * Now that we have the current block size, 2244 * set up some parameters for sastart's usage. 2245 */ 2246 if (softc->media_blksize) { 2247 softc->flags |= SA_FLAG_FIXED; 2248 if (powerof2(softc->media_blksize)) { 2249 softc->blk_shift = 2250 ffs(softc->media_blksize) - 1; 2251 softc->blk_mask = softc->media_blksize - 1; 2252 } else { 2253 softc->blk_mask = ~0; 2254 softc->blk_shift = 0; 2255 } 2256 } else { 2257 /* 2258 * The SCSI-3 spec allows 0 to mean "unspecified". 2259 * The SCSI-1 spec allows 0 to mean 'infinite'. 2260 * 2261 * Either works here. 2262 */ 2263 if (softc->max_blk == 0) { 2264 softc->max_blk = ~0; 2265 } 2266 softc->blk_shift = 0; 2267 if (softc->blk_gran != 0) { 2268 softc->blk_mask = softc->blk_gran - 1; 2269 } else { 2270 softc->blk_mask = 0; 2271 } 2272 } 2273 2274 if (write_protect) 2275 softc->flags |= SA_FLAG_TAPE_WP; 2276 2277 if (comp_supported) { 2278 if (softc->saved_comp_algorithm == 0) 2279 softc->saved_comp_algorithm = 2280 softc->comp_algorithm; 2281 softc->flags |= SA_FLAG_COMP_SUPP; 2282 if (comp_enabled) 2283 softc->flags |= SA_FLAG_COMP_ENABLED; 2284 } else 2285 softc->flags |= SA_FLAG_COMP_UNSUPP; 2286 2287 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2288 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2289 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2290 0, 0, SF_NO_PRINT); 2291 if (error == 0) { 2292 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2293 } else { 2294 xpt_print_path(periph->path); 2295 printf("unable to set buffered mode\n"); 2296 } 2297 error = 0; /* not an error */ 2298 } 2299 2300 2301 if (error == 0) { 2302 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2303 } 2304 exit: 2305 if (rblim != NULL) 2306 free(rblim, M_SCSISA); 2307 2308 if (error != 0) { 2309 softc->dsreg = MTIO_DSREG_NIL; 2310 } else { 2311 softc->fileno = softc->blkno = 0; 2312 softc->dsreg = MTIO_DSREG_REST; 2313 } 2314 #ifdef SA_1FM_AT_EOD 2315 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2316 softc->quirks |= SA_QUIRK_1FM; 2317 #else 2318 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2319 softc->quirks |= SA_QUIRK_2FM; 2320 #endif 2321 } else 2322 xpt_release_ccb(ccb); 2323 2324 /* 2325 * If we return an error, we're not mounted any more, 2326 * so release any device reservation. 2327 */ 2328 if (error != 0) { 2329 (void) sareservereleaseunit(periph, FALSE); 2330 } else { 2331 /* 2332 * Clear I/O residual. 2333 */ 2334 softc->last_io_resid = 0; 2335 softc->last_ctl_resid = 0; 2336 } 2337 return (error); 2338 } 2339 2340 /* 2341 * How many filemarks do we need to write if we were to terminate the 2342 * tape session right now? Note that this can be a negative number 2343 */ 2344 2345 static int 2346 samarkswanted(struct cam_periph *periph) 2347 { 2348 int markswanted; 2349 struct sa_softc *softc; 2350 2351 softc = (struct sa_softc *)periph->softc; 2352 markswanted = 0; 2353 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2354 markswanted++; 2355 if (softc->quirks & SA_QUIRK_2FM) 2356 markswanted++; 2357 } 2358 markswanted -= softc->filemarks; 2359 return (markswanted); 2360 } 2361 2362 static int 2363 sacheckeod(struct cam_periph *periph) 2364 { 2365 int error; 2366 int markswanted; 2367 2368 markswanted = samarkswanted(periph); 2369 2370 if (markswanted > 0) { 2371 error = sawritefilemarks(periph, markswanted, FALSE); 2372 } else { 2373 error = 0; 2374 } 2375 return (error); 2376 } 2377 2378 static int 2379 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2380 { 2381 static const char *toobig = 2382 "%d-byte tape record bigger than supplied buffer\n"; 2383 struct cam_periph *periph; 2384 struct sa_softc *softc; 2385 struct ccb_scsiio *csio; 2386 struct scsi_sense_data *sense; 2387 u_int32_t resid = 0; 2388 int32_t info = 0; 2389 cam_status status; 2390 int error_code, sense_key, asc, ascq, error, aqvalid; 2391 2392 periph = xpt_path_periph(ccb->ccb_h.path); 2393 softc = (struct sa_softc *)periph->softc; 2394 csio = &ccb->csio; 2395 sense = &csio->sense_data; 2396 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2397 aqvalid = sense->extra_len >= 6; 2398 error = 0; 2399 2400 status = csio->ccb_h.status & CAM_STATUS_MASK; 2401 2402 /* 2403 * Calculate/latch up, any residuals... We do this in a funny 2-step 2404 * so we can print stuff here if we have CAM_DEBUG enabled for this 2405 * unit. 2406 */ 2407 if (status == CAM_SCSI_STATUS_ERROR) { 2408 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2409 info = (int32_t) scsi_4btoul(sense->info); 2410 resid = info; 2411 if ((softc->flags & SA_FLAG_FIXED) != 0) 2412 resid *= softc->media_blksize; 2413 } else { 2414 resid = csio->dxfer_len; 2415 info = resid; 2416 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2417 if (softc->media_blksize) 2418 info /= softc->media_blksize; 2419 } 2420 } 2421 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2422 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2423 sizeof (struct scsi_sense_data)); 2424 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2425 (int) csio->cdb_len); 2426 softc->last_io_resid = resid; 2427 softc->last_resid_was_io = 1; 2428 } else { 2429 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2430 sizeof (struct scsi_sense_data)); 2431 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2432 (int) csio->cdb_len); 2433 softc->last_ctl_resid = resid; 2434 softc->last_resid_was_io = 0; 2435 } 2436 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2437 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2438 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2439 sense_key, asc, ascq, status, 2440 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2441 } else { 2442 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2443 ("Cam Status 0x%x\n", status)); 2444 } 2445 2446 switch (status) { 2447 case CAM_REQ_CMP: 2448 return (0); 2449 case CAM_SCSI_STATUS_ERROR: 2450 /* 2451 * If a read/write command, we handle it here. 2452 */ 2453 if (CCB_Type(csio) != SA_CCB_WAITING) { 2454 break; 2455 } 2456 /* 2457 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2458 * on a non read/write command, we assume it's not an error 2459 * and propagate the residule and return. 2460 */ 2461 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2462 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2463 csio->resid = resid; 2464 QFRLS(ccb); 2465 return (0); 2466 } 2467 /* 2468 * Otherwise, we let the common code handle this. 2469 */ 2470 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2471 2472 /* 2473 * XXX: To Be Fixed 2474 * We cannot depend upon CAM honoring retry counts for these. 2475 */ 2476 case CAM_SCSI_BUS_RESET: 2477 case CAM_BDR_SENT: 2478 if (ccb->ccb_h.retry_count <= 0) { 2479 return (EIO); 2480 } 2481 /* FALLTHROUGH */ 2482 default: 2483 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2484 } 2485 2486 /* 2487 * Handle filemark, end of tape, mismatched record sizes.... 2488 * From this point out, we're only handling read/write cases. 2489 * Handle writes && reads differently. 2490 */ 2491 2492 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2493 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2494 csio->resid = resid; 2495 error = ENOSPC; 2496 } else if (sense->flags & SSD_EOM) { 2497 softc->flags |= SA_FLAG_EOM_PENDING; 2498 /* 2499 * Grotesque as it seems, the few times 2500 * I've actually seen a non-zero resid, 2501 * the tape drive actually lied and had 2502 * written all the data!. 2503 */ 2504 csio->resid = 0; 2505 } 2506 } else { 2507 csio->resid = resid; 2508 if (sense_key == SSD_KEY_BLANK_CHECK) { 2509 if (softc->quirks & SA_QUIRK_1FM) { 2510 error = 0; 2511 softc->flags |= SA_FLAG_EOM_PENDING; 2512 } else { 2513 error = EIO; 2514 } 2515 } else if (sense->flags & SSD_FILEMARK) { 2516 if (softc->flags & SA_FLAG_FIXED) { 2517 error = -1; 2518 softc->flags |= SA_FLAG_EOF_PENDING; 2519 } 2520 /* 2521 * Unconditionally, if we detected a filemark on a read, 2522 * mark that we've run moved a file ahead. 2523 */ 2524 if (softc->fileno != (daddr_t) -1) { 2525 softc->fileno++; 2526 softc->blkno = 0; 2527 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2528 } 2529 } 2530 } 2531 2532 /* 2533 * Incorrect Length usually applies to read, but can apply to writes. 2534 */ 2535 if (error == 0 && (sense->flags & SSD_ILI)) { 2536 if (info < 0) { 2537 xpt_print_path(csio->ccb_h.path); 2538 printf(toobig, csio->dxfer_len - info); 2539 csio->resid = csio->dxfer_len; 2540 error = EIO; 2541 } else { 2542 csio->resid = resid; 2543 if (softc->flags & SA_FLAG_FIXED) { 2544 softc->flags |= SA_FLAG_EIO_PENDING; 2545 } 2546 /* 2547 * Bump the block number if we hadn't seen a filemark. 2548 * Do this independent of errors (we've moved anyway). 2549 */ 2550 if ((sense->flags & SSD_FILEMARK) == 0) { 2551 if (softc->blkno != (daddr_t) -1) { 2552 softc->blkno++; 2553 csio->ccb_h.ccb_pflags |= 2554 SA_POSITION_UPDATED; 2555 } 2556 } 2557 } 2558 } 2559 2560 if (error <= 0) { 2561 /* 2562 * Unfreeze the queue if frozen as we're not returning anything 2563 * to our waiters that would indicate an I/O error has occurred 2564 * (yet). 2565 */ 2566 QFRLS(ccb); 2567 error = 0; 2568 } 2569 return (error); 2570 } 2571 2572 static int 2573 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2574 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2575 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2576 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2577 sa_comp_t *tcs) 2578 { 2579 union ccb *ccb; 2580 void *mode_buffer; 2581 struct scsi_mode_header_6 *mode_hdr; 2582 struct scsi_mode_blk_desc *mode_blk; 2583 int mode_buffer_len; 2584 struct sa_softc *softc; 2585 u_int8_t cpage; 2586 int error; 2587 cam_status status; 2588 2589 softc = (struct sa_softc *)periph->softc; 2590 ccb = cam_periph_getccb(periph, 1); 2591 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2592 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2593 else 2594 cpage = SA_DATA_COMPRESSION_PAGE; 2595 2596 retry: 2597 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2598 2599 if (params_to_get & SA_PARAM_COMPRESSION) { 2600 if (softc->quirks & SA_QUIRK_NOCOMP) { 2601 *comp_supported = FALSE; 2602 params_to_get &= ~SA_PARAM_COMPRESSION; 2603 } else 2604 mode_buffer_len += sizeof (sa_comp_t); 2605 } 2606 2607 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_WAITOK | M_ZERO); 2608 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2609 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2610 2611 /* it is safe to retry this */ 2612 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2613 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2614 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2615 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2616 2617 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2618 softc->device_stats); 2619 QFRLS(ccb); 2620 2621 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2622 2623 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2624 /* 2625 * Hmm. Let's see if we can try another page... 2626 * If we've already done that, give up on compression 2627 * for this device and remember this for the future 2628 * and attempt the request without asking for compression 2629 * info. 2630 */ 2631 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2632 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2633 goto retry; 2634 } 2635 softc->quirks |= SA_QUIRK_NOCOMP; 2636 free(mode_buffer, M_SCSISA); 2637 goto retry; 2638 } else if (status == CAM_SCSI_STATUS_ERROR) { 2639 /* Tell the user about the fatal error. */ 2640 scsi_sense_print(&ccb->csio); 2641 goto sagetparamsexit; 2642 } 2643 2644 /* 2645 * If the user only wants the compression information, and 2646 * the device doesn't send back the block descriptor, it's 2647 * no big deal. If the user wants more than just 2648 * compression, though, and the device doesn't pass back the 2649 * block descriptor, we need to send another mode sense to 2650 * get the block descriptor. 2651 */ 2652 if ((mode_hdr->blk_desc_len == 0) && 2653 (params_to_get & SA_PARAM_COMPRESSION) && 2654 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2655 2656 /* 2657 * Decrease the mode buffer length by the size of 2658 * the compression page, to make sure the data 2659 * there doesn't get overwritten. 2660 */ 2661 mode_buffer_len -= sizeof (sa_comp_t); 2662 2663 /* 2664 * Now move the compression page that we presumably 2665 * got back down the memory chunk a little bit so 2666 * it doesn't get spammed. 2667 */ 2668 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2669 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2670 2671 /* 2672 * Now, we issue another mode sense and just ask 2673 * for the block descriptor, etc. 2674 */ 2675 2676 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2677 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2678 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2679 SCSIOP_TIMEOUT); 2680 2681 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2682 softc->device_stats); 2683 QFRLS(ccb); 2684 2685 if (error != 0) 2686 goto sagetparamsexit; 2687 } 2688 2689 if (params_to_get & SA_PARAM_BLOCKSIZE) 2690 *blocksize = scsi_3btoul(mode_blk->blklen); 2691 2692 if (params_to_get & SA_PARAM_NUMBLOCKS) 2693 *numblocks = scsi_3btoul(mode_blk->nblocks); 2694 2695 if (params_to_get & SA_PARAM_BUFF_MODE) 2696 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2697 2698 if (params_to_get & SA_PARAM_DENSITY) 2699 *density = mode_blk->density; 2700 2701 if (params_to_get & SA_PARAM_WP) 2702 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2703 2704 if (params_to_get & SA_PARAM_SPEED) 2705 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2706 2707 if (params_to_get & SA_PARAM_COMPRESSION) { 2708 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2709 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2710 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2711 *comp_supported = 2712 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2713 *comp_enabled = 2714 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2715 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2716 } else { 2717 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2718 /* 2719 * We don't really know whether this device supports 2720 * Data Compression if the the algorithm field is 2721 * zero. Just say we do. 2722 */ 2723 *comp_supported = TRUE; 2724 *comp_enabled = 2725 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2726 *comp_algorithm = cp->sel_comp_alg; 2727 } 2728 if (tcs != NULL) 2729 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2730 } 2731 2732 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2733 int idx; 2734 char *xyz = mode_buffer; 2735 xpt_print_path(periph->path); 2736 printf("Mode Sense Data="); 2737 for (idx = 0; idx < mode_buffer_len; idx++) 2738 printf(" 0x%02x", xyz[idx] & 0xff); 2739 printf("\n"); 2740 } 2741 2742 sagetparamsexit: 2743 2744 xpt_release_ccb(ccb); 2745 free(mode_buffer, M_SCSISA); 2746 return (error); 2747 } 2748 2749 /* 2750 * The purpose of this function is to set one of four different parameters 2751 * for a tape drive: 2752 * - blocksize 2753 * - density 2754 * - compression / compression algorithm 2755 * - buffering mode 2756 * 2757 * The assumption is that this will be called from saioctl(), and therefore 2758 * from a process context. Thus the waiting malloc calls below. If that 2759 * assumption ever changes, the malloc calls should be changed to be 2760 * NOWAIT mallocs. 2761 * 2762 * Any or all of the four parameters may be set when this function is 2763 * called. It should handle setting more than one parameter at once. 2764 */ 2765 static int 2766 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2767 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2768 u_int32_t sense_flags) 2769 { 2770 struct sa_softc *softc; 2771 u_int32_t current_blocksize; 2772 u_int32_t current_calg; 2773 u_int8_t current_density; 2774 u_int8_t current_speed; 2775 int comp_enabled, comp_supported; 2776 void *mode_buffer; 2777 int mode_buffer_len; 2778 struct scsi_mode_header_6 *mode_hdr; 2779 struct scsi_mode_blk_desc *mode_blk; 2780 sa_comp_t *ccomp, *cpage; 2781 int buff_mode; 2782 union ccb *ccb = NULL; 2783 int error; 2784 2785 softc = (struct sa_softc *)periph->softc; 2786 2787 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_WAITOK); 2788 2789 /* 2790 * Since it doesn't make sense to set the number of blocks, or 2791 * write protection, we won't try to get the current value. We 2792 * always want to get the blocksize, so we can set it back to the 2793 * proper value. 2794 */ 2795 error = sagetparams(periph, 2796 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2797 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2798 ¤t_speed, &comp_supported, &comp_enabled, 2799 ¤t_calg, ccomp); 2800 2801 if (error != 0) { 2802 free(ccomp, M_SCSISA); 2803 return (error); 2804 } 2805 2806 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2807 if (params_to_set & SA_PARAM_COMPRESSION) 2808 mode_buffer_len += sizeof (sa_comp_t); 2809 2810 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_WAITOK | M_ZERO); 2811 2812 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2813 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2814 2815 ccb = cam_periph_getccb(periph, 1); 2816 2817 retry: 2818 2819 if (params_to_set & SA_PARAM_COMPRESSION) { 2820 if (mode_blk) { 2821 cpage = (sa_comp_t *)&mode_blk[1]; 2822 } else { 2823 cpage = (sa_comp_t *)&mode_hdr[1]; 2824 } 2825 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2826 cpage->hdr.pagecode &= ~0x80; 2827 } else 2828 cpage = NULL; 2829 2830 /* 2831 * If the caller wants us to set the blocksize, use the one they 2832 * pass in. Otherwise, use the blocksize we got back from the 2833 * mode select above. 2834 */ 2835 if (mode_blk) { 2836 if (params_to_set & SA_PARAM_BLOCKSIZE) 2837 scsi_ulto3b(blocksize, mode_blk->blklen); 2838 else 2839 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2840 2841 /* 2842 * Set density if requested, else preserve old density. 2843 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2844 * devices, else density we've latched up in our softc. 2845 */ 2846 if (params_to_set & SA_PARAM_DENSITY) { 2847 mode_blk->density = density; 2848 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2849 mode_blk->density = SCSI_SAME_DENSITY; 2850 } else { 2851 mode_blk->density = softc->media_density; 2852 } 2853 } 2854 2855 /* 2856 * For mode selects, these two fields must be zero. 2857 */ 2858 mode_hdr->data_length = 0; 2859 mode_hdr->medium_type = 0; 2860 2861 /* set the speed to the current value */ 2862 mode_hdr->dev_spec = current_speed; 2863 2864 /* if set, set single-initiator buffering mode */ 2865 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2866 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2867 } 2868 2869 if (mode_blk) 2870 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2871 else 2872 mode_hdr->blk_desc_len = 0; 2873 2874 /* 2875 * First, if the user wants us to set the compression algorithm or 2876 * just turn compression on, check to make sure that this drive 2877 * supports compression. 2878 */ 2879 if (params_to_set & SA_PARAM_COMPRESSION) { 2880 /* 2881 * If the compression algorithm is 0, disable compression. 2882 * If the compression algorithm is non-zero, enable 2883 * compression and set the compression type to the 2884 * specified compression algorithm, unless the algorithm is 2885 * MT_COMP_ENABLE. In that case, we look at the 2886 * compression algorithm that is currently set and if it is 2887 * non-zero, we leave it as-is. If it is zero, and we have 2888 * saved a compression algorithm from a time when 2889 * compression was enabled before, set the compression to 2890 * the saved value. 2891 */ 2892 switch (ccomp->hdr.pagecode & ~0x80) { 2893 case SA_DEVICE_CONFIGURATION_PAGE: 2894 { 2895 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2896 if (calg == 0) { 2897 dcp->sel_comp_alg = SA_COMP_NONE; 2898 break; 2899 } 2900 if (calg != MT_COMP_ENABLE) { 2901 dcp->sel_comp_alg = calg; 2902 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2903 softc->saved_comp_algorithm != 0) { 2904 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2905 } 2906 break; 2907 } 2908 case SA_DATA_COMPRESSION_PAGE: 2909 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2910 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2911 if (calg == 0) { 2912 /* 2913 * Disable compression, but leave the 2914 * decompression and the capability bit 2915 * alone. 2916 */ 2917 dcp->dce_and_dcc = SA_DCP_DCC; 2918 dcp->dde_and_red |= SA_DCP_DDE; 2919 break; 2920 } 2921 /* enable compression && decompression */ 2922 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2923 dcp->dde_and_red |= SA_DCP_DDE; 2924 /* 2925 * If there, use compression algorithm from caller. 2926 * Otherwise, if there's a saved compression algorithm 2927 * and there is no current algorithm, use the saved 2928 * algorithm. Else parrot back what we got and hope 2929 * for the best. 2930 */ 2931 if (calg != MT_COMP_ENABLE) { 2932 scsi_ulto4b(calg, dcp->comp_algorithm); 2933 scsi_ulto4b(calg, dcp->decomp_algorithm); 2934 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2935 softc->saved_comp_algorithm != 0) { 2936 scsi_ulto4b(softc->saved_comp_algorithm, 2937 dcp->comp_algorithm); 2938 scsi_ulto4b(softc->saved_comp_algorithm, 2939 dcp->decomp_algorithm); 2940 } 2941 break; 2942 } 2943 /* 2944 * Compression does not appear to be supported- 2945 * at least via the DATA COMPRESSION page. It 2946 * would be too much to ask us to believe that 2947 * the page itself is supported, but incorrectly 2948 * reports an ability to manipulate data compression, 2949 * so we'll assume that this device doesn't support 2950 * compression. We can just fall through for that. 2951 */ 2952 /* FALLTHROUGH */ 2953 default: 2954 /* 2955 * The drive doesn't seem to support compression, 2956 * so turn off the set compression bit. 2957 */ 2958 params_to_set &= ~SA_PARAM_COMPRESSION; 2959 xpt_print_path(periph->path); 2960 printf("device does not seem to support compression\n"); 2961 2962 /* 2963 * If that was the only thing the user wanted us to set, 2964 * clean up allocated resources and return with 2965 * 'operation not supported'. 2966 */ 2967 if (params_to_set == SA_PARAM_NONE) { 2968 free(mode_buffer, M_SCSISA); 2969 xpt_release_ccb(ccb); 2970 return (ENODEV); 2971 } 2972 2973 /* 2974 * That wasn't the only thing the user wanted us to set. 2975 * So, decrease the stated mode buffer length by the 2976 * size of the compression mode page. 2977 */ 2978 mode_buffer_len -= sizeof(sa_comp_t); 2979 } 2980 } 2981 2982 /* It is safe to retry this operation */ 2983 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2984 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2985 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2986 2987 error = cam_periph_runccb(ccb, saerror, 0, 2988 sense_flags, softc->device_stats); 2989 QFRLS(ccb); 2990 2991 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2992 int idx; 2993 char *xyz = mode_buffer; 2994 xpt_print_path(periph->path); 2995 printf("Err%d, Mode Select Data=", error); 2996 for (idx = 0; idx < mode_buffer_len; idx++) 2997 printf(" 0x%02x", xyz[idx] & 0xff); 2998 printf("\n"); 2999 } 3000 3001 3002 if (error) { 3003 /* 3004 * If we can, try without setting density/blocksize. 3005 */ 3006 if (mode_blk) { 3007 if ((params_to_set & 3008 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 3009 mode_blk = NULL; 3010 goto retry; 3011 } 3012 } else { 3013 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3014 cpage = (sa_comp_t *)&mode_blk[1]; 3015 } 3016 3017 /* 3018 * If we were setting the blocksize, and that failed, we 3019 * want to set it to its original value. If we weren't 3020 * setting the blocksize, we don't want to change it. 3021 */ 3022 scsi_ulto3b(current_blocksize, mode_blk->blklen); 3023 3024 /* 3025 * Set density if requested, else preserve old density. 3026 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 3027 * devices, else density we've latched up in our softc. 3028 */ 3029 if (params_to_set & SA_PARAM_DENSITY) { 3030 mode_blk->density = current_density; 3031 } else if (softc->scsi_rev > SCSI_REV_CCS) { 3032 mode_blk->density = SCSI_SAME_DENSITY; 3033 } else { 3034 mode_blk->density = softc->media_density; 3035 } 3036 3037 if (params_to_set & SA_PARAM_COMPRESSION) 3038 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3039 3040 /* 3041 * The retry count is the only CCB field that might have been 3042 * changed that we care about, so reset it back to 1. 3043 */ 3044 ccb->ccb_h.retry_count = 1; 3045 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3046 softc->device_stats); 3047 QFRLS(ccb); 3048 } 3049 3050 xpt_release_ccb(ccb); 3051 3052 if (ccomp != NULL) 3053 free(ccomp, M_SCSISA); 3054 3055 if (params_to_set & SA_PARAM_COMPRESSION) { 3056 if (error) { 3057 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3058 /* 3059 * Even if we get an error setting compression, 3060 * do not say that we don't support it. We could 3061 * have been wrong, or it may be media specific. 3062 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3063 */ 3064 softc->saved_comp_algorithm = softc->comp_algorithm; 3065 softc->comp_algorithm = 0; 3066 } else { 3067 softc->flags |= SA_FLAG_COMP_ENABLED; 3068 softc->comp_algorithm = calg; 3069 } 3070 } 3071 3072 free(mode_buffer, M_SCSISA); 3073 return (error); 3074 } 3075 3076 static void 3077 saprevent(struct cam_periph *periph, int action) 3078 { 3079 struct sa_softc *softc; 3080 union ccb *ccb; 3081 int error, sf; 3082 3083 softc = (struct sa_softc *)periph->softc; 3084 3085 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3086 return; 3087 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3088 return; 3089 3090 /* 3091 * We can be quiet about illegal requests. 3092 */ 3093 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3094 sf = 0; 3095 } else 3096 sf = SF_QUIET_IR; 3097 3098 ccb = cam_periph_getccb(periph, 1); 3099 3100 /* It is safe to retry this operation */ 3101 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3102 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3103 3104 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3105 QFRLS(ccb); 3106 if (error == 0) { 3107 if (action == PR_ALLOW) 3108 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3109 else 3110 softc->flags |= SA_FLAG_TAPE_LOCKED; 3111 } 3112 3113 xpt_release_ccb(ccb); 3114 } 3115 3116 static int 3117 sarewind(struct cam_periph *periph) 3118 { 3119 union ccb *ccb; 3120 struct sa_softc *softc; 3121 int error; 3122 3123 softc = (struct sa_softc *)periph->softc; 3124 3125 ccb = cam_periph_getccb(periph, 1); 3126 3127 /* It is safe to retry this operation */ 3128 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3129 SSD_FULL_SIZE, REWIND_TIMEOUT); 3130 3131 softc->dsreg = MTIO_DSREG_REW; 3132 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3133 softc->dsreg = MTIO_DSREG_REST; 3134 3135 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3136 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3137 3138 xpt_release_ccb(ccb); 3139 if (error == 0) 3140 softc->fileno = softc->blkno = (daddr_t) 0; 3141 else 3142 softc->fileno = softc->blkno = (daddr_t) -1; 3143 return (error); 3144 } 3145 3146 static int 3147 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3148 { 3149 union ccb *ccb; 3150 struct sa_softc *softc; 3151 int error; 3152 3153 softc = (struct sa_softc *)periph->softc; 3154 3155 ccb = cam_periph_getccb(periph, 1); 3156 3157 /* This cannot be retried */ 3158 3159 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3160 SSD_FULL_SIZE, SPACE_TIMEOUT); 3161 3162 /* 3163 * Clear residual because we will be using it. 3164 */ 3165 softc->last_ctl_resid = 0; 3166 3167 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3168 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3169 softc->dsreg = MTIO_DSREG_REST; 3170 3171 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3172 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3173 3174 xpt_release_ccb(ccb); 3175 3176 /* 3177 * If a spacing operation has failed, we need to invalidate 3178 * this mount. 3179 * 3180 * If the spacing operation was setmarks or to end of recorded data, 3181 * we no longer know our relative position. 3182 * 3183 * If the spacing operations was spacing files in reverse, we 3184 * take account of the residual, but still check against less 3185 * than zero- if we've gone negative, we must have hit BOT. 3186 * 3187 * If the spacing operations was spacing records in reverse and 3188 * we have a residual, we've either hit BOT or hit a filemark. 3189 * In the former case, we know our new record number (0). In 3190 * the latter case, we have absolutely no idea what the real 3191 * record number is- we've stopped between the end of the last 3192 * record in the previous file and the filemark that stopped 3193 * our spacing backwards. 3194 */ 3195 if (error) { 3196 softc->fileno = softc->blkno = (daddr_t) -1; 3197 } else if (code == SS_SETMARKS || code == SS_EOD) { 3198 softc->fileno = softc->blkno = (daddr_t) -1; 3199 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3200 softc->fileno += (count - softc->last_ctl_resid); 3201 if (softc->fileno < 0) /* we must of hit BOT */ 3202 softc->fileno = 0; 3203 softc->blkno = 0; 3204 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3205 softc->blkno += (count - softc->last_ctl_resid); 3206 if (count < 0) { 3207 if (softc->last_ctl_resid || softc->blkno < 0) { 3208 if (softc->fileno == 0) { 3209 softc->blkno = 0; 3210 } else { 3211 softc->blkno = (daddr_t) -1; 3212 } 3213 } 3214 } 3215 } 3216 return (error); 3217 } 3218 3219 static int 3220 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3221 { 3222 union ccb *ccb; 3223 struct sa_softc *softc; 3224 int error, nwm = 0; 3225 3226 softc = (struct sa_softc *)periph->softc; 3227 if (softc->open_rdonly) 3228 return (EBADF); 3229 3230 ccb = cam_periph_getccb(periph, 1); 3231 /* 3232 * Clear residual because we will be using it. 3233 */ 3234 softc->last_ctl_resid = 0; 3235 3236 softc->dsreg = MTIO_DSREG_FMK; 3237 /* this *must* not be retried */ 3238 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3239 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3240 softc->dsreg = MTIO_DSREG_REST; 3241 3242 3243 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3244 3245 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3246 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3247 3248 if (error == 0 && nmarks) { 3249 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3250 nwm = nmarks - softc->last_ctl_resid; 3251 softc->filemarks += nwm; 3252 } 3253 3254 xpt_release_ccb(ccb); 3255 3256 /* 3257 * Update relative positions (if we're doing that). 3258 */ 3259 if (error) { 3260 softc->fileno = softc->blkno = (daddr_t) -1; 3261 } else if (softc->fileno != (daddr_t) -1) { 3262 softc->fileno += nwm; 3263 softc->blkno = 0; 3264 } 3265 return (error); 3266 } 3267 3268 static int 3269 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3270 { 3271 struct scsi_tape_position_data loc; 3272 union ccb *ccb; 3273 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3274 int error; 3275 3276 /* 3277 * We try and flush any buffered writes here if we were writing 3278 * and we're trying to get hardware block position. It eats 3279 * up performance substantially, but I'm wary of drive firmware. 3280 * 3281 * I think that *logical* block position is probably okay- 3282 * but hardware block position might have to wait for data 3283 * to hit media to be valid. Caveat Emptor. 3284 */ 3285 3286 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3287 error = sawritefilemarks(periph, 0, 0); 3288 if (error && error != EACCES) 3289 return (error); 3290 } 3291 3292 ccb = cam_periph_getccb(periph, 1); 3293 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3294 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3295 softc->dsreg = MTIO_DSREG_RBSY; 3296 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3297 softc->dsreg = MTIO_DSREG_REST; 3298 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3299 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3300 3301 if (error == 0) { 3302 if (loc.flags & SA_RPOS_UNCERTAIN) { 3303 error = EINVAL; /* nothing is certain */ 3304 } else { 3305 *blkptr = scsi_4btoul(loc.firstblk); 3306 } 3307 } 3308 3309 xpt_release_ccb(ccb); 3310 return (error); 3311 } 3312 3313 static int 3314 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3315 { 3316 union ccb *ccb; 3317 struct sa_softc *softc; 3318 int error; 3319 3320 /* 3321 * We used to try and flush any buffered writes here. 3322 * Now we push this onto user applications to either 3323 * flush the pending writes themselves (via a zero count 3324 * WRITE FILEMARKS command) or they can trust their tape 3325 * drive to do this correctly for them. 3326 */ 3327 3328 softc = (struct sa_softc *)periph->softc; 3329 ccb = cam_periph_getccb(periph, 1); 3330 3331 3332 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3333 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3334 3335 3336 softc->dsreg = MTIO_DSREG_POS; 3337 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3338 softc->dsreg = MTIO_DSREG_REST; 3339 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3340 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3341 xpt_release_ccb(ccb); 3342 /* 3343 * Note relative file && block number position as now unknown. 3344 */ 3345 softc->fileno = softc->blkno = (daddr_t) -1; 3346 return (error); 3347 } 3348 3349 static int 3350 saretension(struct cam_periph *periph) 3351 { 3352 union ccb *ccb; 3353 struct sa_softc *softc; 3354 int error; 3355 3356 softc = (struct sa_softc *)periph->softc; 3357 3358 ccb = cam_periph_getccb(periph, 1); 3359 3360 /* It is safe to retry this operation */ 3361 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3362 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3363 3364 softc->dsreg = MTIO_DSREG_TEN; 3365 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3366 softc->dsreg = MTIO_DSREG_REST; 3367 3368 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3369 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3370 xpt_release_ccb(ccb); 3371 if (error == 0) 3372 softc->fileno = softc->blkno = (daddr_t) 0; 3373 else 3374 softc->fileno = softc->blkno = (daddr_t) -1; 3375 return (error); 3376 } 3377 3378 static int 3379 sareservereleaseunit(struct cam_periph *periph, int reserve) 3380 { 3381 union ccb *ccb; 3382 struct sa_softc *softc; 3383 int error; 3384 3385 softc = (struct sa_softc *)periph->softc; 3386 ccb = cam_periph_getccb(periph, 1); 3387 3388 /* It is safe to retry this operation */ 3389 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3390 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3391 softc->dsreg = MTIO_DSREG_RBSY; 3392 error = cam_periph_runccb(ccb, saerror, 0, 3393 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3394 softc->dsreg = MTIO_DSREG_REST; 3395 QFRLS(ccb); 3396 xpt_release_ccb(ccb); 3397 3398 /* 3399 * If the error was Illegal Request, then the device doesn't support 3400 * RESERVE/RELEASE. This is not an error. 3401 */ 3402 if (error == EINVAL) { 3403 error = 0; 3404 } 3405 3406 return (error); 3407 } 3408 3409 static int 3410 saloadunload(struct cam_periph *periph, int load) 3411 { 3412 union ccb *ccb; 3413 struct sa_softc *softc; 3414 int error; 3415 3416 softc = (struct sa_softc *)periph->softc; 3417 3418 ccb = cam_periph_getccb(periph, 1); 3419 3420 /* It is safe to retry this operation */ 3421 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3422 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3423 3424 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3425 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3426 softc->dsreg = MTIO_DSREG_REST; 3427 QFRLS(ccb); 3428 xpt_release_ccb(ccb); 3429 3430 if (error || load == 0) 3431 softc->fileno = softc->blkno = (daddr_t) -1; 3432 else if (error == 0) 3433 softc->fileno = softc->blkno = (daddr_t) 0; 3434 return (error); 3435 } 3436 3437 static int 3438 saerase(struct cam_periph *periph, int longerase) 3439 { 3440 3441 union ccb *ccb; 3442 struct sa_softc *softc; 3443 int error; 3444 3445 softc = (struct sa_softc *)periph->softc; 3446 if (softc->open_rdonly) 3447 return (EBADF); 3448 3449 ccb = cam_periph_getccb(periph, 1); 3450 3451 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3452 SSD_FULL_SIZE, ERASE_TIMEOUT); 3453 3454 softc->dsreg = MTIO_DSREG_ZER; 3455 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3456 softc->dsreg = MTIO_DSREG_REST; 3457 3458 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3459 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3460 xpt_release_ccb(ccb); 3461 return (error); 3462 } 3463 3464 #endif /* _KERNEL */ 3465 3466 /* 3467 * Read tape block limits command. 3468 */ 3469 void 3470 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3471 void (*cbfcnp)(struct cam_periph *, union ccb *), 3472 u_int8_t tag_action, 3473 struct scsi_read_block_limits_data *rlimit_buf, 3474 u_int8_t sense_len, u_int32_t timeout) 3475 { 3476 struct scsi_read_block_limits *scsi_cmd; 3477 3478 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3479 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3480 sizeof(*scsi_cmd), timeout); 3481 3482 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3483 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3484 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3485 } 3486 3487 void 3488 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3489 void (*cbfcnp)(struct cam_periph *, union ccb *), 3490 u_int8_t tag_action, int readop, int sli, 3491 int fixed, u_int32_t length, u_int8_t *data_ptr, 3492 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3493 { 3494 struct scsi_sa_rw *scsi_cmd; 3495 3496 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3497 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3498 scsi_cmd->sli_fixed = 0; 3499 if (sli && readop) 3500 scsi_cmd->sli_fixed |= SAR_SLI; 3501 if (fixed) 3502 scsi_cmd->sli_fixed |= SARW_FIXED; 3503 scsi_ulto3b(length, scsi_cmd->length); 3504 scsi_cmd->control = 0; 3505 3506 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3507 tag_action, data_ptr, dxfer_len, sense_len, 3508 sizeof(*scsi_cmd), timeout); 3509 } 3510 3511 void 3512 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3513 void (*cbfcnp)(struct cam_periph *, union ccb *), 3514 u_int8_t tag_action, int immediate, int eot, 3515 int reten, int load, u_int8_t sense_len, 3516 u_int32_t timeout) 3517 { 3518 struct scsi_load_unload *scsi_cmd; 3519 3520 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3521 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3522 scsi_cmd->opcode = LOAD_UNLOAD; 3523 if (immediate) 3524 scsi_cmd->immediate = SLU_IMMED; 3525 if (eot) 3526 scsi_cmd->eot_reten_load |= SLU_EOT; 3527 if (reten) 3528 scsi_cmd->eot_reten_load |= SLU_RETEN; 3529 if (load) 3530 scsi_cmd->eot_reten_load |= SLU_LOAD; 3531 3532 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3533 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3534 } 3535 3536 void 3537 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3538 void (*cbfcnp)(struct cam_periph *, union ccb *), 3539 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3540 u_int32_t timeout) 3541 { 3542 struct scsi_rewind *scsi_cmd; 3543 3544 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3545 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3546 scsi_cmd->opcode = REWIND; 3547 if (immediate) 3548 scsi_cmd->immediate = SREW_IMMED; 3549 3550 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3551 0, sense_len, sizeof(*scsi_cmd), timeout); 3552 } 3553 3554 void 3555 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3556 void (*cbfcnp)(struct cam_periph *, union ccb *), 3557 u_int8_t tag_action, scsi_space_code code, 3558 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3559 { 3560 struct scsi_space *scsi_cmd; 3561 3562 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3563 scsi_cmd->opcode = SPACE; 3564 scsi_cmd->code = code; 3565 scsi_ulto3b(count, scsi_cmd->count); 3566 scsi_cmd->control = 0; 3567 3568 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3569 0, sense_len, sizeof(*scsi_cmd), timeout); 3570 } 3571 3572 void 3573 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3574 void (*cbfcnp)(struct cam_periph *, union ccb *), 3575 u_int8_t tag_action, int immediate, int setmark, 3576 u_int32_t num_marks, u_int8_t sense_len, 3577 u_int32_t timeout) 3578 { 3579 struct scsi_write_filemarks *scsi_cmd; 3580 3581 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3582 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3583 scsi_cmd->opcode = WRITE_FILEMARKS; 3584 if (immediate) 3585 scsi_cmd->byte2 |= SWFMRK_IMMED; 3586 if (setmark) 3587 scsi_cmd->byte2 |= SWFMRK_WSMK; 3588 3589 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3590 3591 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3592 0, sense_len, sizeof(*scsi_cmd), timeout); 3593 } 3594 3595 /* 3596 * The reserve and release unit commands differ only by their opcodes. 3597 */ 3598 void 3599 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3600 void (*cbfcnp)(struct cam_periph *, union ccb *), 3601 u_int8_t tag_action, int third_party, 3602 int third_party_id, u_int8_t sense_len, 3603 u_int32_t timeout, int reserve) 3604 { 3605 struct scsi_reserve_release_unit *scsi_cmd; 3606 3607 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3608 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3609 3610 if (reserve) 3611 scsi_cmd->opcode = RESERVE_UNIT; 3612 else 3613 scsi_cmd->opcode = RELEASE_UNIT; 3614 3615 if (third_party) { 3616 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3617 scsi_cmd->lun_thirdparty |= 3618 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3619 } 3620 3621 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3622 0, sense_len, sizeof(*scsi_cmd), timeout); 3623 } 3624 3625 void 3626 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3627 void (*cbfcnp)(struct cam_periph *, union ccb *), 3628 u_int8_t tag_action, int immediate, int long_erase, 3629 u_int8_t sense_len, u_int32_t timeout) 3630 { 3631 struct scsi_erase *scsi_cmd; 3632 3633 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3634 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3635 3636 scsi_cmd->opcode = ERASE; 3637 3638 if (immediate) 3639 scsi_cmd->lun_imm_long |= SE_IMMED; 3640 3641 if (long_erase) 3642 scsi_cmd->lun_imm_long |= SE_LONG; 3643 3644 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3645 0, sense_len, sizeof(*scsi_cmd), timeout); 3646 } 3647 3648 /* 3649 * Read Tape Position command. 3650 */ 3651 void 3652 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3653 void (*cbfcnp)(struct cam_periph *, union ccb *), 3654 u_int8_t tag_action, int hardsoft, 3655 struct scsi_tape_position_data *sbp, 3656 u_int8_t sense_len, u_int32_t timeout) 3657 { 3658 struct scsi_tape_read_position *scmd; 3659 3660 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3661 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3662 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3663 bzero(scmd, sizeof(*scmd)); 3664 scmd->opcode = READ_POSITION; 3665 scmd->byte1 = hardsoft; 3666 } 3667 3668 /* 3669 * Set Tape Position command. 3670 */ 3671 void 3672 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3673 void (*cbfcnp)(struct cam_periph *, union ccb *), 3674 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3675 u_int8_t sense_len, u_int32_t timeout) 3676 { 3677 struct scsi_tape_locate *scmd; 3678 3679 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3680 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3681 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3682 bzero(scmd, sizeof(*scmd)); 3683 scmd->opcode = LOCATE; 3684 if (hardsoft) 3685 scmd->byte1 |= SA_SPOS_BT; 3686 scsi_ulto4b(blkno, scmd->blkaddr); 3687 }
Cache object: 74c91c700c5e28579ca36d058bc76cfb
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