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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/8.3/sys/cam/scsi/scsi_sa.c 231322 2012-02-10 00:09:21Z eadler $"); 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 #define SAMODE(z) (dev2unit(z) & 0x3) 177 #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) 178 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 179 180 #define SA_NOT_CTLDEV 0 181 #define SA_CTLDEV 1 182 183 #define SA_ATYPE_R 0 184 #define SA_ATYPE_NR 1 185 #define SA_ATYPE_ER 2 186 187 #define SAMINOR(ctl, mode, access) \ 188 ((ctl << 4) | (mode << 2) | (access & 0x3)) 189 190 #define SA_NUM_MODES 4 191 struct sa_devs { 192 struct cdev *ctl_dev; 193 struct sa_mode_devs { 194 struct cdev *r_dev; 195 struct cdev *nr_dev; 196 struct cdev *er_dev; 197 } mode_devs[SA_NUM_MODES]; 198 }; 199 200 struct sa_softc { 201 sa_state state; 202 sa_flags flags; 203 sa_quirks quirks; 204 struct bio_queue_head bio_queue; 205 int queue_count; 206 struct devstat *device_stats; 207 struct sa_devs devs; 208 int blk_gran; 209 int blk_mask; 210 int blk_shift; 211 u_int32_t max_blk; 212 u_int32_t min_blk; 213 u_int32_t comp_algorithm; 214 u_int32_t saved_comp_algorithm; 215 u_int32_t media_blksize; 216 u_int32_t last_media_blksize; 217 u_int32_t media_numblks; 218 u_int8_t media_density; 219 u_int8_t speed; 220 u_int8_t scsi_rev; 221 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 222 int buffer_mode; 223 int filemarks; 224 union ccb saved_ccb; 225 int last_resid_was_io; 226 227 /* 228 * Relative to BOT Location. 229 */ 230 daddr_t fileno; 231 daddr_t blkno; 232 233 /* 234 * Latched Error Info 235 */ 236 struct { 237 struct scsi_sense_data _last_io_sense; 238 u_int32_t _last_io_resid; 239 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 240 struct scsi_sense_data _last_ctl_sense; 241 u_int32_t _last_ctl_resid; 242 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 243 #define last_io_sense errinfo._last_io_sense 244 #define last_io_resid errinfo._last_io_resid 245 #define last_io_cdb errinfo._last_io_cdb 246 #define last_ctl_sense errinfo._last_ctl_sense 247 #define last_ctl_resid errinfo._last_ctl_resid 248 #define last_ctl_cdb errinfo._last_ctl_cdb 249 } errinfo; 250 /* 251 * Misc other flags/state 252 */ 253 u_int32_t 254 : 29, 255 open_rdonly : 1, /* open read-only */ 256 open_pending_mount : 1, /* open pending mount */ 257 ctrl_mode : 1; /* control device open */ 258 }; 259 260 struct sa_quirk_entry { 261 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 262 sa_quirks quirks; /* specific quirk type */ 263 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 264 }; 265 266 static struct sa_quirk_entry sa_quirk_table[] = 267 { 268 { 269 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 270 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 271 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 272 }, 273 { 274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 275 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 276 }, 277 { 278 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 279 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 280 }, 281 { 282 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 283 "Python*", "*"}, SA_QUIRK_NODREAD, 0 284 }, 285 { 286 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 287 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 288 }, 289 { 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 291 "VIPER 2525 25462", "-011"}, 292 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 297 }, 298 #if 0 299 { 300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 301 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 302 }, 303 #endif 304 { 305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 306 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 307 }, 308 { 309 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 310 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 311 }, 312 { 313 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 314 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 315 }, 316 { 317 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 318 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 319 }, 320 { 321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 322 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 323 }, 324 { 325 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 326 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 327 }, 328 { /* jreynold@primenet.com */ 329 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 330 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 331 }, 332 { /* mike@sentex.net */ 333 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 334 "STT20000*", "*"}, SA_QUIRK_1FM, 0 335 }, 336 { 337 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 338 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 339 }, 340 { 341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 342 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 343 }, 344 { 345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 346 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 347 }, 348 { 349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 350 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 351 }, 352 { 353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 354 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 355 }, 356 { 357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 358 " SLR*", "*"}, SA_QUIRK_1FM, 0 359 }, 360 { 361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 362 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 363 }, 364 { 365 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 366 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 367 } 368 }; 369 370 static d_open_t saopen; 371 static d_close_t saclose; 372 static d_strategy_t sastrategy; 373 static d_ioctl_t saioctl; 374 static periph_init_t sainit; 375 static periph_ctor_t saregister; 376 static periph_oninv_t saoninvalidate; 377 static periph_dtor_t sacleanup; 378 static periph_start_t sastart; 379 static void saasync(void *callback_arg, u_int32_t code, 380 struct cam_path *path, void *arg); 381 static void sadone(struct cam_periph *periph, 382 union ccb *start_ccb); 383 static int saerror(union ccb *ccb, u_int32_t cam_flags, 384 u_int32_t sense_flags); 385 static int samarkswanted(struct cam_periph *); 386 static int sacheckeod(struct cam_periph *periph); 387 static int sagetparams(struct cam_periph *periph, 388 sa_params params_to_get, 389 u_int32_t *blocksize, u_int8_t *density, 390 u_int32_t *numblocks, int *buff_mode, 391 u_int8_t *write_protect, u_int8_t *speed, 392 int *comp_supported, int *comp_enabled, 393 u_int32_t *comp_algorithm, 394 sa_comp_t *comp_page); 395 static int sasetparams(struct cam_periph *periph, 396 sa_params params_to_set, 397 u_int32_t blocksize, u_int8_t density, 398 u_int32_t comp_algorithm, 399 u_int32_t sense_flags); 400 static void saprevent(struct cam_periph *periph, int action); 401 static int sarewind(struct cam_periph *periph); 402 static int saspace(struct cam_periph *periph, int count, 403 scsi_space_code code); 404 static int samount(struct cam_periph *, int, struct cdev *); 405 static int saretension(struct cam_periph *periph); 406 static int sareservereleaseunit(struct cam_periph *periph, 407 int reserve); 408 static int saloadunload(struct cam_periph *periph, int load); 409 static int saerase(struct cam_periph *periph, int longerase); 410 static int sawritefilemarks(struct cam_periph *periph, 411 int nmarks, int setmarks); 412 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 413 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 414 415 416 static struct periph_driver sadriver = 417 { 418 sainit, "sa", 419 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 420 }; 421 422 PERIPHDRIVER_DECLARE(sa, sadriver); 423 424 /* For 2.2-stable support */ 425 #ifndef D_TAPE 426 #define D_TAPE 0 427 #endif 428 429 430 static struct cdevsw sa_cdevsw = { 431 .d_version = D_VERSION, 432 .d_open = saopen, 433 .d_close = saclose, 434 .d_read = physread, 435 .d_write = physwrite, 436 .d_ioctl = saioctl, 437 .d_strategy = sastrategy, 438 .d_name = "sa", 439 .d_flags = D_TAPE | D_NEEDGIANT, 440 }; 441 442 static int 443 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 444 { 445 struct cam_periph *periph; 446 struct sa_softc *softc; 447 int error; 448 449 periph = (struct cam_periph *)dev->si_drv1; 450 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 451 return (ENXIO); 452 } 453 454 cam_periph_lock(periph); 455 456 softc = (struct sa_softc *)periph->softc; 457 458 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 459 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 460 461 if (SA_IS_CTRL(dev)) { 462 softc->ctrl_mode = 1; 463 cam_periph_unlock(periph); 464 return (0); 465 } 466 467 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 468 cam_periph_unlock(periph); 469 cam_periph_release(periph); 470 return (error); 471 } 472 473 if (softc->flags & SA_FLAG_OPEN) { 474 error = EBUSY; 475 } else if (softc->flags & SA_FLAG_INVALID) { 476 error = ENXIO; 477 } else { 478 /* 479 * Preserve whether this is a read_only open. 480 */ 481 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 482 483 /* 484 * The function samount ensures media is loaded and ready. 485 * It also does a device RESERVE if the tape isn't yet mounted. 486 * 487 * If the mount fails and this was a non-blocking open, 488 * make this a 'open_pending_mount' action. 489 */ 490 error = samount(periph, flags, dev); 491 if (error && (flags & O_NONBLOCK)) { 492 softc->flags |= SA_FLAG_OPEN; 493 softc->open_pending_mount = 1; 494 cam_periph_unhold(periph); 495 cam_periph_unlock(periph); 496 return (0); 497 } 498 } 499 500 if (error) { 501 cam_periph_unhold(periph); 502 cam_periph_unlock(periph); 503 cam_periph_release(periph); 504 return (error); 505 } 506 507 saprevent(periph, PR_PREVENT); 508 softc->flags |= SA_FLAG_OPEN; 509 510 cam_periph_unhold(periph); 511 cam_periph_unlock(periph); 512 return (error); 513 } 514 515 static int 516 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 517 { 518 struct cam_periph *periph; 519 struct sa_softc *softc; 520 int mode, error, writing, tmp; 521 int closedbits = SA_FLAG_OPEN; 522 523 mode = SAMODE(dev); 524 periph = (struct cam_periph *)dev->si_drv1; 525 if (periph == NULL) 526 return (ENXIO); 527 528 cam_periph_lock(periph); 529 530 softc = (struct sa_softc *)periph->softc; 531 532 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 533 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 534 535 536 softc->open_rdonly = 0; 537 if (SA_IS_CTRL(dev)) { 538 softc->ctrl_mode = 0; 539 cam_periph_unlock(periph); 540 cam_periph_release(periph); 541 return (0); 542 } 543 544 if (softc->open_pending_mount) { 545 softc->flags &= ~SA_FLAG_OPEN; 546 softc->open_pending_mount = 0; 547 cam_periph_unlock(periph); 548 cam_periph_release(periph); 549 return (0); 550 } 551 552 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 553 cam_periph_unlock(periph); 554 return (error); 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(periph->path, 570 "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(periph->path, "unable to backspace " 626 "over one of double filemarks at end of " 627 "tape\n"); 628 xpt_print(periph->path, "it is possible that " 629 "this device needs a SA_QUIRK_1FM quirk set" 630 "for it\n"); 631 softc->flags |= SA_FLAG_TAPE_FROZEN; 632 } 633 } 634 break; 635 default: 636 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 637 /* NOTREACHED */ 638 break; 639 } 640 641 /* 642 * We wish to note here that there are no more filemarks to be written. 643 */ 644 softc->filemarks = 0; 645 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 646 647 /* 648 * And we are no longer open for business. 649 */ 650 softc->flags &= ~closedbits; 651 652 /* 653 * Inform users if tape state if frozen.... 654 */ 655 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 656 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 657 "REWIND or MTEOM command to clear this state.\n"); 658 } 659 660 /* release the device if it is no longer mounted */ 661 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 662 sareservereleaseunit(periph, FALSE); 663 664 cam_periph_unhold(periph); 665 cam_periph_unlock(periph); 666 cam_periph_release(periph); 667 668 return (error); 669 } 670 671 /* 672 * Actually translate the requested transfer into one the physical driver 673 * can understand. The transfer is described by a buf and will include 674 * only one physical transfer. 675 */ 676 static void 677 sastrategy(struct bio *bp) 678 { 679 struct cam_periph *periph; 680 struct sa_softc *softc; 681 682 bp->bio_resid = bp->bio_bcount; 683 if (SA_IS_CTRL(bp->bio_dev)) { 684 biofinish(bp, NULL, EINVAL); 685 return; 686 } 687 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 688 if (periph == NULL) { 689 biofinish(bp, NULL, ENXIO); 690 return; 691 } 692 cam_periph_lock(periph); 693 694 softc = (struct sa_softc *)periph->softc; 695 696 if (softc->flags & SA_FLAG_INVALID) { 697 cam_periph_unlock(periph); 698 biofinish(bp, NULL, ENXIO); 699 return; 700 } 701 702 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 703 cam_periph_unlock(periph); 704 biofinish(bp, NULL, EPERM); 705 return; 706 } 707 708 /* 709 * This should actually never occur as the write(2) 710 * system call traps attempts to write to a read-only 711 * file descriptor. 712 */ 713 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 714 cam_periph_unlock(periph); 715 biofinish(bp, NULL, EBADF); 716 return; 717 } 718 719 if (softc->open_pending_mount) { 720 int error = samount(periph, 0, bp->bio_dev); 721 if (error) { 722 cam_periph_unlock(periph); 723 biofinish(bp, NULL, ENXIO); 724 return; 725 } 726 saprevent(periph, PR_PREVENT); 727 softc->open_pending_mount = 0; 728 } 729 730 731 /* 732 * If it's a null transfer, return immediately 733 */ 734 if (bp->bio_bcount == 0) { 735 cam_periph_unlock(periph); 736 biodone(bp); 737 return; 738 } 739 740 /* valid request? */ 741 if (softc->flags & SA_FLAG_FIXED) { 742 /* 743 * Fixed block device. The byte count must 744 * be a multiple of our block size. 745 */ 746 if (((softc->blk_mask != ~0) && 747 ((bp->bio_bcount & softc->blk_mask) != 0)) || 748 ((softc->blk_mask == ~0) && 749 ((bp->bio_bcount % softc->min_blk) != 0))) { 750 xpt_print(periph->path, "Invalid request. Fixed block " 751 "device requests must be a multiple of %d bytes\n", 752 softc->min_blk); 753 cam_periph_unlock(periph); 754 biofinish(bp, NULL, EINVAL); 755 return; 756 } 757 } else if ((bp->bio_bcount > softc->max_blk) || 758 (bp->bio_bcount < softc->min_blk) || 759 (bp->bio_bcount & softc->blk_mask) != 0) { 760 761 xpt_print_path(periph->path); 762 printf("Invalid request. Variable block " 763 "device requests must be "); 764 if (softc->blk_mask != 0) { 765 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 766 } 767 printf("between %d and %d bytes\n", softc->min_blk, 768 softc->max_blk); 769 cam_periph_unlock(periph); 770 biofinish(bp, NULL, EINVAL); 771 return; 772 } 773 774 /* 775 * Place it at the end of the queue. 776 */ 777 bioq_insert_tail(&softc->bio_queue, bp); 778 softc->queue_count++; 779 #if 0 780 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 781 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 782 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 783 (bp->bio_cmd == BIO_READ)? "read" : "write")); 784 #endif 785 if (softc->queue_count > 1) { 786 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 787 ("sastrategy: queue count now %d\n", softc->queue_count)); 788 } 789 790 /* 791 * Schedule ourselves for performing the work. 792 */ 793 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 794 cam_periph_unlock(periph); 795 796 return; 797 } 798 799 800 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 801 if (softc->open_pending_mount) { \ 802 error = samount(periph, 0, dev); \ 803 if (error) { \ 804 break; \ 805 } \ 806 saprevent(periph, PR_PREVENT); \ 807 softc->open_pending_mount = 0; \ 808 } 809 810 static int 811 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 812 { 813 struct cam_periph *periph; 814 struct sa_softc *softc; 815 scsi_space_code spaceop; 816 int didlockperiph = 0; 817 int mode; 818 int error = 0; 819 820 mode = SAMODE(dev); 821 error = 0; /* shut up gcc */ 822 spaceop = 0; /* shut up gcc */ 823 824 periph = (struct cam_periph *)dev->si_drv1; 825 if (periph == NULL) 826 return (ENXIO); 827 828 cam_periph_lock(periph); 829 softc = (struct sa_softc *)periph->softc; 830 831 /* 832 * Check for control mode accesses. We allow MTIOCGET and 833 * MTIOCERRSTAT (but need to be the only one open in order 834 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 835 * and MTCOMP (but need to be the only one accessing this 836 * device to run those). 837 */ 838 839 if (SA_IS_CTRL(dev)) { 840 switch (cmd) { 841 case MTIOCGETEOTMODEL: 842 case MTIOCGET: 843 break; 844 case MTIOCERRSTAT: 845 /* 846 * If the periph isn't already locked, lock it 847 * so our MTIOCERRSTAT can reset latched error stats. 848 * 849 * If the periph is already locked, skip it because 850 * we're just getting status and it'll be up to the 851 * other thread that has this device open to do 852 * an MTIOCERRSTAT that would clear latched status. 853 */ 854 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 855 error = cam_periph_hold(periph, PRIBIO|PCATCH); 856 if (error != 0) 857 return (error); 858 didlockperiph = 1; 859 } 860 break; 861 862 case MTIOCTOP: 863 { 864 struct mtop *mt = (struct mtop *) arg; 865 866 /* 867 * Check to make sure it's an OP we can perform 868 * with no media inserted. 869 */ 870 switch (mt->mt_op) { 871 case MTSETBSIZ: 872 case MTSETDNSTY: 873 case MTCOMP: 874 mt = NULL; 875 /* FALLTHROUGH */ 876 default: 877 break; 878 } 879 if (mt != NULL) { 880 break; 881 } 882 /* FALLTHROUGH */ 883 } 884 case MTIOCSETEOTMODEL: 885 /* 886 * We need to acquire the peripheral here rather 887 * than at open time because we are sharing writable 888 * access to data structures. 889 */ 890 error = cam_periph_hold(periph, PRIBIO|PCATCH); 891 if (error != 0) 892 return (error); 893 didlockperiph = 1; 894 break; 895 896 default: 897 return (EINVAL); 898 } 899 } 900 901 /* 902 * Find the device that the user is talking about 903 */ 904 switch (cmd) { 905 case MTIOCGET: 906 { 907 struct mtget *g = (struct mtget *)arg; 908 909 /* 910 * If this isn't the control mode device, actually go out 911 * and ask the drive again what it's set to. 912 */ 913 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 914 u_int8_t write_protect; 915 int comp_enabled, comp_supported; 916 error = sagetparams(periph, SA_PARAM_ALL, 917 &softc->media_blksize, &softc->media_density, 918 &softc->media_numblks, &softc->buffer_mode, 919 &write_protect, &softc->speed, &comp_supported, 920 &comp_enabled, &softc->comp_algorithm, NULL); 921 if (error) 922 break; 923 if (write_protect) 924 softc->flags |= SA_FLAG_TAPE_WP; 925 else 926 softc->flags &= ~SA_FLAG_TAPE_WP; 927 softc->flags &= ~(SA_FLAG_COMP_SUPP| 928 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 929 if (comp_supported) { 930 if (softc->saved_comp_algorithm == 0) 931 softc->saved_comp_algorithm = 932 softc->comp_algorithm; 933 softc->flags |= SA_FLAG_COMP_SUPP; 934 if (comp_enabled) 935 softc->flags |= SA_FLAG_COMP_ENABLED; 936 } else 937 softc->flags |= SA_FLAG_COMP_UNSUPP; 938 } 939 bzero(g, sizeof(struct mtget)); 940 g->mt_type = MT_ISAR; 941 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 942 g->mt_comp = MT_COMP_UNSUPP; 943 g->mt_comp0 = MT_COMP_UNSUPP; 944 g->mt_comp1 = MT_COMP_UNSUPP; 945 g->mt_comp2 = MT_COMP_UNSUPP; 946 g->mt_comp3 = MT_COMP_UNSUPP; 947 } else { 948 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 949 g->mt_comp = MT_COMP_DISABLED; 950 } else { 951 g->mt_comp = softc->comp_algorithm; 952 } 953 g->mt_comp0 = softc->comp_algorithm; 954 g->mt_comp1 = softc->comp_algorithm; 955 g->mt_comp2 = softc->comp_algorithm; 956 g->mt_comp3 = softc->comp_algorithm; 957 } 958 g->mt_density = softc->media_density; 959 g->mt_density0 = softc->media_density; 960 g->mt_density1 = softc->media_density; 961 g->mt_density2 = softc->media_density; 962 g->mt_density3 = softc->media_density; 963 g->mt_blksiz = softc->media_blksize; 964 g->mt_blksiz0 = softc->media_blksize; 965 g->mt_blksiz1 = softc->media_blksize; 966 g->mt_blksiz2 = softc->media_blksize; 967 g->mt_blksiz3 = softc->media_blksize; 968 g->mt_fileno = softc->fileno; 969 g->mt_blkno = softc->blkno; 970 g->mt_dsreg = (short) softc->dsreg; 971 /* 972 * Yes, we know that this is likely to overflow 973 */ 974 if (softc->last_resid_was_io) { 975 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 976 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 977 softc->last_io_resid = 0; 978 } 979 } 980 } else { 981 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 982 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 983 softc->last_ctl_resid = 0; 984 } 985 } 986 } 987 error = 0; 988 break; 989 } 990 case MTIOCERRSTAT: 991 { 992 struct scsi_tape_errors *sep = 993 &((union mterrstat *)arg)->scsi_errstat; 994 995 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 996 ("saioctl: MTIOCERRSTAT\n")); 997 998 bzero(sep, sizeof(*sep)); 999 sep->io_resid = softc->last_io_resid; 1000 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1001 sizeof (sep->io_sense)); 1002 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1003 sizeof (sep->io_cdb)); 1004 sep->ctl_resid = softc->last_ctl_resid; 1005 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1006 sizeof (sep->ctl_sense)); 1007 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1008 sizeof (sep->ctl_cdb)); 1009 1010 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1011 didlockperiph) 1012 bzero((caddr_t) &softc->errinfo, 1013 sizeof (softc->errinfo)); 1014 error = 0; 1015 break; 1016 } 1017 case MTIOCTOP: 1018 { 1019 struct mtop *mt; 1020 int count; 1021 1022 PENDING_MOUNT_CHECK(softc, periph, dev); 1023 1024 mt = (struct mtop *)arg; 1025 1026 1027 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1028 ("saioctl: op=0x%x count=0x%x\n", 1029 mt->mt_op, mt->mt_count)); 1030 1031 count = mt->mt_count; 1032 switch (mt->mt_op) { 1033 case MTWEOF: /* write an end-of-file marker */ 1034 /* 1035 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1036 * flag because by keeping track of filemarks 1037 * we have last written we know ehether or not 1038 * we need to write more when we close the device. 1039 */ 1040 error = sawritefilemarks(periph, count, FALSE); 1041 break; 1042 case MTWSS: /* write a setmark */ 1043 error = sawritefilemarks(periph, count, TRUE); 1044 break; 1045 case MTBSR: /* backward space record */ 1046 case MTFSR: /* forward space record */ 1047 case MTBSF: /* backward space file */ 1048 case MTFSF: /* forward space file */ 1049 case MTBSS: /* backward space setmark */ 1050 case MTFSS: /* forward space setmark */ 1051 case MTEOD: /* space to end of recorded medium */ 1052 { 1053 int nmarks; 1054 1055 spaceop = SS_FILEMARKS; 1056 nmarks = softc->filemarks; 1057 error = sacheckeod(periph); 1058 if (error) { 1059 xpt_print(periph->path, 1060 "EOD check prior to spacing failed\n"); 1061 softc->flags |= SA_FLAG_EIO_PENDING; 1062 break; 1063 } 1064 nmarks -= softc->filemarks; 1065 switch(mt->mt_op) { 1066 case MTBSR: 1067 count = -count; 1068 /* FALLTHROUGH */ 1069 case MTFSR: 1070 spaceop = SS_BLOCKS; 1071 break; 1072 case MTBSF: 1073 count = -count; 1074 /* FALLTHROUGH */ 1075 case MTFSF: 1076 break; 1077 case MTBSS: 1078 count = -count; 1079 /* FALLTHROUGH */ 1080 case MTFSS: 1081 spaceop = SS_SETMARKS; 1082 break; 1083 case MTEOD: 1084 spaceop = SS_EOD; 1085 count = 0; 1086 nmarks = 0; 1087 break; 1088 default: 1089 error = EINVAL; 1090 break; 1091 } 1092 if (error) 1093 break; 1094 1095 nmarks = softc->filemarks; 1096 /* 1097 * XXX: Why are we checking again? 1098 */ 1099 error = sacheckeod(periph); 1100 if (error) 1101 break; 1102 nmarks -= softc->filemarks; 1103 error = saspace(periph, count - nmarks, spaceop); 1104 /* 1105 * At this point, clear that we've written the tape 1106 * and that we've written any filemarks. We really 1107 * don't know what the applications wishes to do next- 1108 * the sacheckeod's will make sure we terminated the 1109 * tape correctly if we'd been writing, but the next 1110 * action the user application takes will set again 1111 * whether we need to write filemarks. 1112 */ 1113 softc->flags &= 1114 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1115 softc->filemarks = 0; 1116 break; 1117 } 1118 case MTREW: /* rewind */ 1119 PENDING_MOUNT_CHECK(softc, periph, dev); 1120 (void) sacheckeod(periph); 1121 error = sarewind(periph); 1122 /* see above */ 1123 softc->flags &= 1124 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1125 softc->flags &= ~SA_FLAG_ERR_PENDING; 1126 softc->filemarks = 0; 1127 break; 1128 case MTERASE: /* erase */ 1129 PENDING_MOUNT_CHECK(softc, periph, dev); 1130 error = saerase(periph, count); 1131 softc->flags &= 1132 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1133 softc->flags &= ~SA_FLAG_ERR_PENDING; 1134 break; 1135 case MTRETENS: /* re-tension tape */ 1136 PENDING_MOUNT_CHECK(softc, periph, dev); 1137 error = saretension(periph); 1138 softc->flags &= 1139 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1140 softc->flags &= ~SA_FLAG_ERR_PENDING; 1141 break; 1142 case MTOFFL: /* rewind and put the drive offline */ 1143 1144 PENDING_MOUNT_CHECK(softc, periph, dev); 1145 1146 (void) sacheckeod(periph); 1147 /* see above */ 1148 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1149 softc->filemarks = 0; 1150 1151 error = sarewind(periph); 1152 /* clear the frozen flag anyway */ 1153 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1154 1155 /* 1156 * Be sure to allow media removal before ejecting. 1157 */ 1158 1159 saprevent(periph, PR_ALLOW); 1160 if (error == 0) { 1161 error = saloadunload(periph, FALSE); 1162 if (error == 0) { 1163 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1164 } 1165 } 1166 break; 1167 1168 case MTNOP: /* no operation, sets status only */ 1169 case MTCACHE: /* enable controller cache */ 1170 case MTNOCACHE: /* disable controller cache */ 1171 error = 0; 1172 break; 1173 1174 case MTSETBSIZ: /* Set block size for device */ 1175 1176 PENDING_MOUNT_CHECK(softc, periph, dev); 1177 1178 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1179 0, 0, 0); 1180 if (error == 0) { 1181 softc->last_media_blksize = 1182 softc->media_blksize; 1183 softc->media_blksize = count; 1184 if (count) { 1185 softc->flags |= SA_FLAG_FIXED; 1186 if (powerof2(count)) { 1187 softc->blk_shift = 1188 ffs(count) - 1; 1189 softc->blk_mask = count - 1; 1190 } else { 1191 softc->blk_mask = ~0; 1192 softc->blk_shift = 0; 1193 } 1194 /* 1195 * Make the user's desire 'persistent'. 1196 */ 1197 softc->quirks &= ~SA_QUIRK_VARIABLE; 1198 softc->quirks |= SA_QUIRK_FIXED; 1199 } else { 1200 softc->flags &= ~SA_FLAG_FIXED; 1201 if (softc->max_blk == 0) { 1202 softc->max_blk = ~0; 1203 } 1204 softc->blk_shift = 0; 1205 if (softc->blk_gran != 0) { 1206 softc->blk_mask = 1207 softc->blk_gran - 1; 1208 } else { 1209 softc->blk_mask = 0; 1210 } 1211 /* 1212 * Make the user's desire 'persistent'. 1213 */ 1214 softc->quirks |= SA_QUIRK_VARIABLE; 1215 softc->quirks &= ~SA_QUIRK_FIXED; 1216 } 1217 } 1218 break; 1219 case MTSETDNSTY: /* Set density for device and mode */ 1220 PENDING_MOUNT_CHECK(softc, periph, dev); 1221 1222 if (count > UCHAR_MAX) { 1223 error = EINVAL; 1224 break; 1225 } else { 1226 error = sasetparams(periph, SA_PARAM_DENSITY, 1227 0, count, 0, 0); 1228 } 1229 break; 1230 case MTCOMP: /* enable compression */ 1231 PENDING_MOUNT_CHECK(softc, periph, dev); 1232 /* 1233 * Some devices don't support compression, and 1234 * don't like it if you ask them for the 1235 * compression page. 1236 */ 1237 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1238 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1239 error = ENODEV; 1240 break; 1241 } 1242 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1243 0, 0, count, SF_NO_PRINT); 1244 break; 1245 default: 1246 error = EINVAL; 1247 } 1248 break; 1249 } 1250 case MTIOCIEOT: 1251 case MTIOCEEOT: 1252 error = 0; 1253 break; 1254 case MTIOCRDSPOS: 1255 PENDING_MOUNT_CHECK(softc, periph, dev); 1256 error = sardpos(periph, 0, (u_int32_t *) arg); 1257 break; 1258 case MTIOCRDHPOS: 1259 PENDING_MOUNT_CHECK(softc, periph, dev); 1260 error = sardpos(periph, 1, (u_int32_t *) arg); 1261 break; 1262 case MTIOCSLOCATE: 1263 PENDING_MOUNT_CHECK(softc, periph, dev); 1264 error = sasetpos(periph, 0, (u_int32_t *) arg); 1265 break; 1266 case MTIOCHLOCATE: 1267 PENDING_MOUNT_CHECK(softc, periph, dev); 1268 error = sasetpos(periph, 1, (u_int32_t *) arg); 1269 break; 1270 case MTIOCGETEOTMODEL: 1271 error = 0; 1272 if (softc->quirks & SA_QUIRK_1FM) 1273 mode = 1; 1274 else 1275 mode = 2; 1276 *((u_int32_t *) arg) = mode; 1277 break; 1278 case MTIOCSETEOTMODEL: 1279 error = 0; 1280 switch (*((u_int32_t *) arg)) { 1281 case 1: 1282 softc->quirks &= ~SA_QUIRK_2FM; 1283 softc->quirks |= SA_QUIRK_1FM; 1284 break; 1285 case 2: 1286 softc->quirks &= ~SA_QUIRK_1FM; 1287 softc->quirks |= SA_QUIRK_2FM; 1288 break; 1289 default: 1290 error = EINVAL; 1291 break; 1292 } 1293 break; 1294 default: 1295 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1296 break; 1297 } 1298 1299 /* 1300 * Check to see if we cleared a frozen state 1301 */ 1302 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1303 switch(cmd) { 1304 case MTIOCRDSPOS: 1305 case MTIOCRDHPOS: 1306 case MTIOCSLOCATE: 1307 case MTIOCHLOCATE: 1308 softc->fileno = (daddr_t) -1; 1309 softc->blkno = (daddr_t) -1; 1310 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1311 xpt_print(periph->path, 1312 "tape state now unfrozen.\n"); 1313 break; 1314 default: 1315 break; 1316 } 1317 } 1318 if (didlockperiph) { 1319 cam_periph_unhold(periph); 1320 } 1321 cam_periph_unlock(periph); 1322 return (error); 1323 } 1324 1325 static void 1326 sainit(void) 1327 { 1328 cam_status status; 1329 1330 /* 1331 * Install a global async callback. 1332 */ 1333 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1334 1335 if (status != CAM_REQ_CMP) { 1336 printf("sa: Failed to attach master async callback " 1337 "due to status 0x%x!\n", status); 1338 } 1339 } 1340 1341 static void 1342 saoninvalidate(struct cam_periph *periph) 1343 { 1344 struct sa_softc *softc; 1345 1346 softc = (struct sa_softc *)periph->softc; 1347 1348 /* 1349 * De-register any async callbacks. 1350 */ 1351 xpt_register_async(0, saasync, periph, periph->path); 1352 1353 softc->flags |= SA_FLAG_INVALID; 1354 1355 /* 1356 * Return all queued I/O with ENXIO. 1357 * XXX Handle any transactions queued to the card 1358 * with XPT_ABORT_CCB. 1359 */ 1360 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1361 softc->queue_count = 0; 1362 1363 xpt_print(periph->path, "lost device\n"); 1364 1365 } 1366 1367 static void 1368 sacleanup(struct cam_periph *periph) 1369 { 1370 struct sa_softc *softc; 1371 int i; 1372 1373 softc = (struct sa_softc *)periph->softc; 1374 1375 xpt_print(periph->path, "removing device entry\n"); 1376 devstat_remove_entry(softc->device_stats); 1377 cam_periph_unlock(periph); 1378 destroy_dev(softc->devs.ctl_dev); 1379 for (i = 0; i < SA_NUM_MODES; i++) { 1380 destroy_dev(softc->devs.mode_devs[i].r_dev); 1381 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1382 destroy_dev(softc->devs.mode_devs[i].er_dev); 1383 } 1384 cam_periph_lock(periph); 1385 free(softc, M_SCSISA); 1386 } 1387 1388 static void 1389 saasync(void *callback_arg, u_int32_t code, 1390 struct cam_path *path, void *arg) 1391 { 1392 struct cam_periph *periph; 1393 1394 periph = (struct cam_periph *)callback_arg; 1395 switch (code) { 1396 case AC_FOUND_DEVICE: 1397 { 1398 struct ccb_getdev *cgd; 1399 cam_status status; 1400 1401 cgd = (struct ccb_getdev *)arg; 1402 if (cgd == NULL) 1403 break; 1404 1405 if (cgd->protocol != PROTO_SCSI) 1406 break; 1407 1408 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1409 break; 1410 1411 /* 1412 * Allocate a peripheral instance for 1413 * this device and start the probe 1414 * process. 1415 */ 1416 status = cam_periph_alloc(saregister, saoninvalidate, 1417 sacleanup, sastart, 1418 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1419 saasync, AC_FOUND_DEVICE, cgd); 1420 1421 if (status != CAM_REQ_CMP 1422 && status != CAM_REQ_INPROG) 1423 printf("saasync: Unable to probe new device " 1424 "due to status 0x%x\n", status); 1425 break; 1426 } 1427 default: 1428 cam_periph_async(periph, code, path, arg); 1429 break; 1430 } 1431 } 1432 1433 static cam_status 1434 saregister(struct cam_periph *periph, void *arg) 1435 { 1436 struct sa_softc *softc; 1437 struct ccb_getdev *cgd; 1438 struct ccb_pathinq cpi; 1439 caddr_t match; 1440 int i; 1441 1442 cgd = (struct ccb_getdev *)arg; 1443 if (periph == NULL) { 1444 printf("saregister: periph was NULL!!\n"); 1445 return (CAM_REQ_CMP_ERR); 1446 } 1447 1448 if (cgd == NULL) { 1449 printf("saregister: no getdev CCB, can't register device\n"); 1450 return (CAM_REQ_CMP_ERR); 1451 } 1452 1453 softc = (struct sa_softc *) 1454 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1455 if (softc == NULL) { 1456 printf("saregister: Unable to probe new device. " 1457 "Unable to allocate softc\n"); 1458 return (CAM_REQ_CMP_ERR); 1459 } 1460 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1461 softc->state = SA_STATE_NORMAL; 1462 softc->fileno = (daddr_t) -1; 1463 softc->blkno = (daddr_t) -1; 1464 1465 bioq_init(&softc->bio_queue); 1466 periph->softc = softc; 1467 1468 /* 1469 * See if this device has any quirks. 1470 */ 1471 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1472 (caddr_t)sa_quirk_table, 1473 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1474 sizeof(*sa_quirk_table), scsi_inquiry_match); 1475 1476 if (match != NULL) { 1477 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1478 softc->last_media_blksize = 1479 ((struct sa_quirk_entry *)match)->prefblk; 1480 #ifdef CAMDEBUG 1481 xpt_print(periph->path, "found quirk entry %d\n", 1482 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1483 #endif 1484 } else 1485 softc->quirks = SA_QUIRK_NONE; 1486 1487 bzero(&cpi, sizeof(cpi)); 1488 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1489 cpi.ccb_h.func_code = XPT_PATH_INQ; 1490 xpt_action((union ccb *)&cpi); 1491 1492 /* 1493 * The SA driver supports a blocksize, but we don't know the 1494 * blocksize until we media is inserted. So, set a flag to 1495 * indicate that the blocksize is unavailable right now. 1496 */ 1497 cam_periph_unlock(periph); 1498 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1499 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1500 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1501 1502 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1503 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1504 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1505 softc->devs.ctl_dev->si_drv1 = periph; 1506 1507 for (i = 0; i < SA_NUM_MODES; i++) { 1508 1509 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1510 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1511 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1512 periph->periph_name, periph->unit_number, i); 1513 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1514 1515 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1516 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1517 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1518 periph->periph_name, periph->unit_number, i); 1519 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1520 1521 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1522 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1523 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1524 periph->periph_name, periph->unit_number, i); 1525 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1526 1527 /* 1528 * Make the (well known) aliases for the first mode. 1529 */ 1530 if (i == 0) { 1531 struct cdev *alias; 1532 1533 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1534 "%s%d", periph->periph_name, periph->unit_number); 1535 alias->si_drv1 = periph; 1536 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1537 "n%s%d", periph->periph_name, periph->unit_number); 1538 alias->si_drv1 = periph; 1539 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1540 "e%s%d", periph->periph_name, periph->unit_number); 1541 alias->si_drv1 = periph; 1542 } 1543 } 1544 cam_periph_lock(periph); 1545 1546 /* 1547 * Add an async callback so that we get 1548 * notified if this device goes away. 1549 */ 1550 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1551 1552 xpt_announce_periph(periph, NULL); 1553 1554 return (CAM_REQ_CMP); 1555 } 1556 1557 static void 1558 sastart(struct cam_periph *periph, union ccb *start_ccb) 1559 { 1560 struct sa_softc *softc; 1561 1562 softc = (struct sa_softc *)periph->softc; 1563 1564 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1565 1566 1567 switch (softc->state) { 1568 case SA_STATE_NORMAL: 1569 { 1570 /* Pull a buffer from the queue and get going on it */ 1571 struct bio *bp; 1572 1573 /* 1574 * See if there is a buf with work for us to do.. 1575 */ 1576 bp = bioq_first(&softc->bio_queue); 1577 if (periph->immediate_priority <= periph->pinfo.priority) { 1578 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1579 ("queuing for immediate ccb\n")); 1580 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1581 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1582 periph_links.sle); 1583 periph->immediate_priority = CAM_PRIORITY_NONE; 1584 wakeup(&periph->ccb_list); 1585 } else if (bp == NULL) { 1586 xpt_release_ccb(start_ccb); 1587 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1588 struct bio *done_bp; 1589 again: 1590 softc->queue_count--; 1591 bioq_remove(&softc->bio_queue, bp); 1592 bp->bio_resid = bp->bio_bcount; 1593 done_bp = bp; 1594 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1595 /* 1596 * We now just clear errors in this case 1597 * and let the residual be the notifier. 1598 */ 1599 bp->bio_error = 0; 1600 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1601 /* 1602 * This can only happen if we're reading 1603 * in fixed length mode. In this case, 1604 * we dump the rest of the list the 1605 * same way. 1606 */ 1607 bp->bio_error = 0; 1608 if (bioq_first(&softc->bio_queue) != NULL) { 1609 biodone(done_bp); 1610 goto again; 1611 } 1612 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1613 bp->bio_error = EIO; 1614 bp->bio_flags |= BIO_ERROR; 1615 } 1616 bp = bioq_first(&softc->bio_queue); 1617 /* 1618 * Only if we have no other buffers queued up 1619 * do we clear the pending error flag. 1620 */ 1621 if (bp == NULL) 1622 softc->flags &= ~SA_FLAG_ERR_PENDING; 1623 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1624 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1625 "%d more buffers queued up\n", 1626 (softc->flags & SA_FLAG_ERR_PENDING), 1627 (bp != NULL)? "not " : " ", softc->queue_count)); 1628 xpt_release_ccb(start_ccb); 1629 biodone(done_bp); 1630 } else { 1631 u_int32_t length; 1632 1633 bioq_remove(&softc->bio_queue, bp); 1634 softc->queue_count--; 1635 1636 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1637 if (softc->blk_shift != 0) { 1638 length = 1639 bp->bio_bcount >> softc->blk_shift; 1640 } else if (softc->media_blksize != 0) { 1641 length = bp->bio_bcount / 1642 softc->media_blksize; 1643 } else { 1644 bp->bio_error = EIO; 1645 xpt_print(periph->path, "zero blocksize" 1646 " for FIXED length writes?\n"); 1647 biodone(bp); 1648 break; 1649 } 1650 #if 0 1651 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1652 ("issuing a %d fixed record %s\n", 1653 length, (bp->bio_cmd == BIO_READ)? "read" : 1654 "write")); 1655 #endif 1656 } else { 1657 length = bp->bio_bcount; 1658 #if 0 1659 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1660 ("issuing a %d variable byte %s\n", 1661 length, (bp->bio_cmd == BIO_READ)? "read" : 1662 "write")); 1663 #endif 1664 } 1665 devstat_start_transaction_bio(softc->device_stats, bp); 1666 /* 1667 * Some people have theorized that we should 1668 * suppress illegal length indication if we are 1669 * running in variable block mode so that we don't 1670 * have to request sense every time our requested 1671 * block size is larger than the written block. 1672 * The residual information from the ccb allows 1673 * us to identify this situation anyway. The only 1674 * problem with this is that we will not get 1675 * information about blocks that are larger than 1676 * our read buffer unless we set the block size 1677 * in the mode page to something other than 0. 1678 * 1679 * I believe that this is a non-issue. If user apps 1680 * don't adjust their read size to match our record 1681 * size, that's just life. Anyway, the typical usage 1682 * would be to issue, e.g., 64KB reads and occasionally 1683 * have to do deal with 512 byte or 1KB intermediate 1684 * records. 1685 */ 1686 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1687 MTIO_DSREG_RD : MTIO_DSREG_WR; 1688 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1689 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1690 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1691 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1692 IO_TIMEOUT); 1693 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1694 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1695 start_ccb->ccb_h.ccb_bp = bp; 1696 bp = bioq_first(&softc->bio_queue); 1697 xpt_action(start_ccb); 1698 } 1699 1700 if (bp != NULL) { 1701 /* Have more work to do, so ensure we stay scheduled */ 1702 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1703 } 1704 break; 1705 } 1706 case SA_STATE_ABNORMAL: 1707 default: 1708 panic("state 0x%x in sastart", softc->state); 1709 break; 1710 } 1711 } 1712 1713 1714 static void 1715 sadone(struct cam_periph *periph, union ccb *done_ccb) 1716 { 1717 struct sa_softc *softc; 1718 struct ccb_scsiio *csio; 1719 1720 softc = (struct sa_softc *)periph->softc; 1721 csio = &done_ccb->csio; 1722 switch (CCB_Type(csio)) { 1723 case SA_CCB_BUFFER_IO: 1724 { 1725 struct bio *bp; 1726 int error; 1727 1728 softc->dsreg = MTIO_DSREG_REST; 1729 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1730 error = 0; 1731 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1732 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1733 /* 1734 * A retry was scheduled, so just return. 1735 */ 1736 return; 1737 } 1738 } 1739 1740 if (error == EIO) { 1741 1742 /* 1743 * Catastrophic error. Mark the tape as frozen 1744 * (we no longer know tape position). 1745 * 1746 * Return all queued I/O with EIO, and unfreeze 1747 * our queue so that future transactions that 1748 * attempt to fix this problem can get to the 1749 * device. 1750 * 1751 */ 1752 1753 softc->flags |= SA_FLAG_TAPE_FROZEN; 1754 bioq_flush(&softc->bio_queue, NULL, EIO); 1755 } 1756 if (error != 0) { 1757 bp->bio_resid = bp->bio_bcount; 1758 bp->bio_error = error; 1759 bp->bio_flags |= BIO_ERROR; 1760 /* 1761 * In the error case, position is updated in saerror. 1762 */ 1763 } else { 1764 bp->bio_resid = csio->resid; 1765 bp->bio_error = 0; 1766 if (csio->resid != 0) { 1767 bp->bio_flags |= BIO_ERROR; 1768 } 1769 if (bp->bio_cmd == BIO_WRITE) { 1770 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1771 softc->filemarks = 0; 1772 } 1773 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1774 (softc->blkno != (daddr_t) -1)) { 1775 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1776 u_int32_t l; 1777 if (softc->blk_shift != 0) { 1778 l = bp->bio_bcount >> 1779 softc->blk_shift; 1780 } else { 1781 l = bp->bio_bcount / 1782 softc->media_blksize; 1783 } 1784 softc->blkno += (daddr_t) l; 1785 } else { 1786 softc->blkno++; 1787 } 1788 } 1789 } 1790 /* 1791 * If we had an error (immediate or pending), 1792 * release the device queue now. 1793 */ 1794 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1795 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1796 #ifdef CAMDEBUG 1797 if (error || bp->bio_resid) { 1798 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1799 ("error %d resid %ld count %ld\n", error, 1800 bp->bio_resid, bp->bio_bcount)); 1801 } 1802 #endif 1803 biofinish(bp, softc->device_stats, 0); 1804 break; 1805 } 1806 case SA_CCB_WAITING: 1807 { 1808 /* Caller will release the CCB */ 1809 wakeup(&done_ccb->ccb_h.cbfcnp); 1810 return; 1811 } 1812 } 1813 xpt_release_ccb(done_ccb); 1814 } 1815 1816 /* 1817 * Mount the tape (make sure it's ready for I/O). 1818 */ 1819 static int 1820 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1821 { 1822 struct sa_softc *softc; 1823 union ccb *ccb; 1824 int error; 1825 1826 /* 1827 * oflags can be checked for 'kind' of open (read-only check) - later 1828 * dev can be checked for a control-mode or compression open - later 1829 */ 1830 UNUSED_PARAMETER(oflags); 1831 UNUSED_PARAMETER(dev); 1832 1833 1834 softc = (struct sa_softc *)periph->softc; 1835 1836 /* 1837 * This should determine if something has happend since the last 1838 * open/mount that would invalidate the mount. We do *not* want 1839 * to retry this command- we just want the status. But we only 1840 * do this if we're mounted already- if we're not mounted, 1841 * we don't care about the unit read state and can instead use 1842 * this opportunity to attempt to reserve the tape unit. 1843 */ 1844 1845 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1846 ccb = cam_periph_getccb(periph, 1); 1847 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1848 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1849 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1850 softc->device_stats); 1851 QFRLS(ccb); 1852 if (error == ENXIO) { 1853 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1854 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1855 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1856 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1857 softc->device_stats); 1858 QFRLS(ccb); 1859 } else if (error) { 1860 /* 1861 * We don't need to freeze the tape because we 1862 * will now attempt to rewind/load it. 1863 */ 1864 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1865 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1866 xpt_print(periph->path, 1867 "error %d on TUR in samount\n", error); 1868 } 1869 } 1870 } else { 1871 error = sareservereleaseunit(periph, TRUE); 1872 if (error) { 1873 return (error); 1874 } 1875 ccb = cam_periph_getccb(periph, 1); 1876 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1877 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1878 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1879 softc->device_stats); 1880 QFRLS(ccb); 1881 } 1882 1883 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1884 struct scsi_read_block_limits_data *rblim = NULL; 1885 int comp_enabled, comp_supported; 1886 u_int8_t write_protect, guessing = 0; 1887 1888 /* 1889 * Clear out old state. 1890 */ 1891 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1892 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1893 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1894 softc->filemarks = 0; 1895 1896 /* 1897 * *Very* first off, make sure we're loaded to BOT. 1898 */ 1899 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1900 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1901 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1902 softc->device_stats); 1903 QFRLS(ccb); 1904 1905 /* 1906 * In case this doesn't work, do a REWIND instead 1907 */ 1908 if (error) { 1909 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1910 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1911 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1912 softc->device_stats); 1913 QFRLS(ccb); 1914 } 1915 if (error) { 1916 xpt_release_ccb(ccb); 1917 goto exit; 1918 } 1919 1920 /* 1921 * Do a dummy test read to force access to the 1922 * media so that the drive will really know what's 1923 * there. We actually don't really care what the 1924 * blocksize on tape is and don't expect to really 1925 * read a full record. 1926 */ 1927 rblim = (struct scsi_read_block_limits_data *) 1928 malloc(8192, M_SCSISA, M_NOWAIT); 1929 if (rblim == NULL) { 1930 xpt_print(periph->path, "no memory for test read\n"); 1931 xpt_release_ccb(ccb); 1932 error = ENOMEM; 1933 goto exit; 1934 } 1935 1936 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1937 scsi_sa_read_write(&ccb->csio, 0, sadone, 1938 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1939 (void *) rblim, 8192, SSD_FULL_SIZE, 1940 IO_TIMEOUT); 1941 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1942 softc->device_stats); 1943 QFRLS(ccb); 1944 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1945 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1946 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1947 SF_NO_PRINT | SF_RETRY_UA, 1948 softc->device_stats); 1949 QFRLS(ccb); 1950 if (error) { 1951 xpt_print(periph->path, 1952 "unable to rewind after test read\n"); 1953 xpt_release_ccb(ccb); 1954 goto exit; 1955 } 1956 } 1957 1958 /* 1959 * Next off, determine block limits. 1960 */ 1961 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1962 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1963 1964 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1965 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 1966 1967 QFRLS(ccb); 1968 xpt_release_ccb(ccb); 1969 1970 if (error != 0) { 1971 /* 1972 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1973 * a MANDATORY command. Anyway- it doesn't matter- 1974 * we can proceed anyway. 1975 */ 1976 softc->blk_gran = 0; 1977 softc->max_blk = ~0; 1978 softc->min_blk = 0; 1979 } else { 1980 if (softc->scsi_rev >= SCSI_REV_SPC) { 1981 softc->blk_gran = RBL_GRAN(rblim); 1982 } else { 1983 softc->blk_gran = 0; 1984 } 1985 /* 1986 * We take max_blk == min_blk to mean a default to 1987 * fixed mode- but note that whatever we get out of 1988 * sagetparams below will actually determine whether 1989 * we are actually *in* fixed mode. 1990 */ 1991 softc->max_blk = scsi_3btoul(rblim->maximum); 1992 softc->min_blk = scsi_2btoul(rblim->minimum); 1993 1994 1995 } 1996 /* 1997 * Next, perform a mode sense to determine 1998 * current density, blocksize, compression etc. 1999 */ 2000 error = sagetparams(periph, SA_PARAM_ALL, 2001 &softc->media_blksize, 2002 &softc->media_density, 2003 &softc->media_numblks, 2004 &softc->buffer_mode, &write_protect, 2005 &softc->speed, &comp_supported, 2006 &comp_enabled, &softc->comp_algorithm, 2007 NULL); 2008 2009 if (error != 0) { 2010 /* 2011 * We could work a little harder here. We could 2012 * adjust our attempts to get information. It 2013 * might be an ancient tape drive. If someone 2014 * nudges us, we'll do that. 2015 */ 2016 goto exit; 2017 } 2018 2019 /* 2020 * If no quirk has determined that this is a device that is 2021 * preferred to be in fixed or variable mode, now is the time 2022 * to find out. 2023 */ 2024 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2025 guessing = 1; 2026 /* 2027 * This could be expensive to find out. Luckily we 2028 * only need to do this once. If we start out in 2029 * 'default' mode, try and set ourselves to one 2030 * of the densities that would determine a wad 2031 * of other stuff. Go from highest to lowest. 2032 */ 2033 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2034 int i; 2035 static u_int8_t ctry[] = { 2036 SCSI_DENSITY_HALFINCH_PE, 2037 SCSI_DENSITY_HALFINCH_6250C, 2038 SCSI_DENSITY_HALFINCH_6250, 2039 SCSI_DENSITY_HALFINCH_1600, 2040 SCSI_DENSITY_HALFINCH_800, 2041 SCSI_DENSITY_QIC_4GB, 2042 SCSI_DENSITY_QIC_2GB, 2043 SCSI_DENSITY_QIC_525_320, 2044 SCSI_DENSITY_QIC_150, 2045 SCSI_DENSITY_QIC_120, 2046 SCSI_DENSITY_QIC_24, 2047 SCSI_DENSITY_QIC_11_9TRK, 2048 SCSI_DENSITY_QIC_11_4TRK, 2049 SCSI_DENSITY_QIC_1320, 2050 SCSI_DENSITY_QIC_3080, 2051 0 2052 }; 2053 for (i = 0; ctry[i]; i++) { 2054 error = sasetparams(periph, 2055 SA_PARAM_DENSITY, 0, ctry[i], 2056 0, SF_NO_PRINT); 2057 if (error == 0) { 2058 softc->media_density = ctry[i]; 2059 break; 2060 } 2061 } 2062 } 2063 switch (softc->media_density) { 2064 case SCSI_DENSITY_QIC_11_4TRK: 2065 case SCSI_DENSITY_QIC_11_9TRK: 2066 case SCSI_DENSITY_QIC_24: 2067 case SCSI_DENSITY_QIC_120: 2068 case SCSI_DENSITY_QIC_150: 2069 case SCSI_DENSITY_QIC_525_320: 2070 case SCSI_DENSITY_QIC_1320: 2071 case SCSI_DENSITY_QIC_3080: 2072 softc->quirks &= ~SA_QUIRK_2FM; 2073 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2074 softc->last_media_blksize = 512; 2075 break; 2076 case SCSI_DENSITY_QIC_4GB: 2077 case SCSI_DENSITY_QIC_2GB: 2078 softc->quirks &= ~SA_QUIRK_2FM; 2079 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2080 softc->last_media_blksize = 1024; 2081 break; 2082 default: 2083 softc->last_media_blksize = 2084 softc->media_blksize; 2085 softc->quirks |= SA_QUIRK_VARIABLE; 2086 break; 2087 } 2088 } 2089 2090 /* 2091 * If no quirk has determined that this is a device that needs 2092 * to have 2 Filemarks at EOD, now is the time to find out. 2093 */ 2094 2095 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2096 switch (softc->media_density) { 2097 case SCSI_DENSITY_HALFINCH_800: 2098 case SCSI_DENSITY_HALFINCH_1600: 2099 case SCSI_DENSITY_HALFINCH_6250: 2100 case SCSI_DENSITY_HALFINCH_6250C: 2101 case SCSI_DENSITY_HALFINCH_PE: 2102 softc->quirks &= ~SA_QUIRK_1FM; 2103 softc->quirks |= SA_QUIRK_2FM; 2104 break; 2105 default: 2106 break; 2107 } 2108 } 2109 2110 /* 2111 * Now validate that some info we got makes sense. 2112 */ 2113 if ((softc->max_blk < softc->media_blksize) || 2114 (softc->min_blk > softc->media_blksize && 2115 softc->media_blksize)) { 2116 xpt_print(periph->path, 2117 "BLOCK LIMITS (%d..%d) could not match current " 2118 "block settings (%d)- adjusting\n", softc->min_blk, 2119 softc->max_blk, softc->media_blksize); 2120 softc->max_blk = softc->min_blk = 2121 softc->media_blksize; 2122 } 2123 2124 /* 2125 * Now put ourselves into the right frame of mind based 2126 * upon quirks... 2127 */ 2128 tryagain: 2129 /* 2130 * If we want to be in FIXED mode and our current blocksize 2131 * is not equal to our last blocksize (if nonzero), try and 2132 * set ourselves to this last blocksize (as the 'preferred' 2133 * block size). The initial quirkmatch at registry sets the 2134 * initial 'last' blocksize. If, for whatever reason, this 2135 * 'last' blocksize is zero, set the blocksize to 512, 2136 * or min_blk if that's larger. 2137 */ 2138 if ((softc->quirks & SA_QUIRK_FIXED) && 2139 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2140 (softc->media_blksize != softc->last_media_blksize)) { 2141 softc->media_blksize = softc->last_media_blksize; 2142 if (softc->media_blksize == 0) { 2143 softc->media_blksize = 512; 2144 if (softc->media_blksize < softc->min_blk) { 2145 softc->media_blksize = softc->min_blk; 2146 } 2147 } 2148 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2149 softc->media_blksize, 0, 0, SF_NO_PRINT); 2150 if (error) { 2151 xpt_print(periph->path, 2152 "unable to set fixed blocksize to %d\n", 2153 softc->media_blksize); 2154 goto exit; 2155 } 2156 } 2157 2158 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2159 (softc->media_blksize != 0)) { 2160 softc->last_media_blksize = softc->media_blksize; 2161 softc->media_blksize = 0; 2162 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2163 0, 0, 0, SF_NO_PRINT); 2164 if (error) { 2165 /* 2166 * If this fails and we were guessing, just 2167 * assume that we got it wrong and go try 2168 * fixed block mode. Don't even check against 2169 * density code at this point. 2170 */ 2171 if (guessing) { 2172 softc->quirks &= ~SA_QUIRK_VARIABLE; 2173 softc->quirks |= SA_QUIRK_FIXED; 2174 if (softc->last_media_blksize == 0) 2175 softc->last_media_blksize = 512; 2176 goto tryagain; 2177 } 2178 xpt_print(periph->path, 2179 "unable to set variable blocksize\n"); 2180 goto exit; 2181 } 2182 } 2183 2184 /* 2185 * Now that we have the current block size, 2186 * set up some parameters for sastart's usage. 2187 */ 2188 if (softc->media_blksize) { 2189 softc->flags |= SA_FLAG_FIXED; 2190 if (powerof2(softc->media_blksize)) { 2191 softc->blk_shift = 2192 ffs(softc->media_blksize) - 1; 2193 softc->blk_mask = softc->media_blksize - 1; 2194 } else { 2195 softc->blk_mask = ~0; 2196 softc->blk_shift = 0; 2197 } 2198 } else { 2199 /* 2200 * The SCSI-3 spec allows 0 to mean "unspecified". 2201 * The SCSI-1 spec allows 0 to mean 'infinite'. 2202 * 2203 * Either works here. 2204 */ 2205 if (softc->max_blk == 0) { 2206 softc->max_blk = ~0; 2207 } 2208 softc->blk_shift = 0; 2209 if (softc->blk_gran != 0) { 2210 softc->blk_mask = softc->blk_gran - 1; 2211 } else { 2212 softc->blk_mask = 0; 2213 } 2214 } 2215 2216 if (write_protect) 2217 softc->flags |= SA_FLAG_TAPE_WP; 2218 2219 if (comp_supported) { 2220 if (softc->saved_comp_algorithm == 0) 2221 softc->saved_comp_algorithm = 2222 softc->comp_algorithm; 2223 softc->flags |= SA_FLAG_COMP_SUPP; 2224 if (comp_enabled) 2225 softc->flags |= SA_FLAG_COMP_ENABLED; 2226 } else 2227 softc->flags |= SA_FLAG_COMP_UNSUPP; 2228 2229 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2230 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2231 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2232 0, 0, SF_NO_PRINT); 2233 if (error == 0) { 2234 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2235 } else { 2236 xpt_print(periph->path, 2237 "unable to set buffered mode\n"); 2238 } 2239 error = 0; /* not an error */ 2240 } 2241 2242 2243 if (error == 0) { 2244 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2245 } 2246 exit: 2247 if (rblim != NULL) 2248 free(rblim, M_SCSISA); 2249 2250 if (error != 0) { 2251 softc->dsreg = MTIO_DSREG_NIL; 2252 } else { 2253 softc->fileno = softc->blkno = 0; 2254 softc->dsreg = MTIO_DSREG_REST; 2255 } 2256 #ifdef SA_1FM_AT_EOD 2257 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2258 softc->quirks |= SA_QUIRK_1FM; 2259 #else 2260 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2261 softc->quirks |= SA_QUIRK_2FM; 2262 #endif 2263 } else 2264 xpt_release_ccb(ccb); 2265 2266 /* 2267 * If we return an error, we're not mounted any more, 2268 * so release any device reservation. 2269 */ 2270 if (error != 0) { 2271 (void) sareservereleaseunit(periph, FALSE); 2272 } else { 2273 /* 2274 * Clear I/O residual. 2275 */ 2276 softc->last_io_resid = 0; 2277 softc->last_ctl_resid = 0; 2278 } 2279 return (error); 2280 } 2281 2282 /* 2283 * How many filemarks do we need to write if we were to terminate the 2284 * tape session right now? Note that this can be a negative number 2285 */ 2286 2287 static int 2288 samarkswanted(struct cam_periph *periph) 2289 { 2290 int markswanted; 2291 struct sa_softc *softc; 2292 2293 softc = (struct sa_softc *)periph->softc; 2294 markswanted = 0; 2295 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2296 markswanted++; 2297 if (softc->quirks & SA_QUIRK_2FM) 2298 markswanted++; 2299 } 2300 markswanted -= softc->filemarks; 2301 return (markswanted); 2302 } 2303 2304 static int 2305 sacheckeod(struct cam_periph *periph) 2306 { 2307 int error; 2308 int markswanted; 2309 2310 markswanted = samarkswanted(periph); 2311 2312 if (markswanted > 0) { 2313 error = sawritefilemarks(periph, markswanted, FALSE); 2314 } else { 2315 error = 0; 2316 } 2317 return (error); 2318 } 2319 2320 static int 2321 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2322 { 2323 static const char *toobig = 2324 "%d-byte tape record bigger than supplied buffer\n"; 2325 struct cam_periph *periph; 2326 struct sa_softc *softc; 2327 struct ccb_scsiio *csio; 2328 struct scsi_sense_data *sense; 2329 u_int32_t resid = 0; 2330 int32_t info = 0; 2331 cam_status status; 2332 int error_code, sense_key, asc, ascq, error, aqvalid; 2333 2334 periph = xpt_path_periph(ccb->ccb_h.path); 2335 softc = (struct sa_softc *)periph->softc; 2336 csio = &ccb->csio; 2337 sense = &csio->sense_data; 2338 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2339 aqvalid = sense->extra_len >= 6; 2340 error = 0; 2341 2342 status = csio->ccb_h.status & CAM_STATUS_MASK; 2343 2344 /* 2345 * Calculate/latch up, any residuals... We do this in a funny 2-step 2346 * so we can print stuff here if we have CAM_DEBUG enabled for this 2347 * unit. 2348 */ 2349 if (status == CAM_SCSI_STATUS_ERROR) { 2350 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2351 info = (int32_t) scsi_4btoul(sense->info); 2352 resid = info; 2353 if ((softc->flags & SA_FLAG_FIXED) != 0) 2354 resid *= softc->media_blksize; 2355 } else { 2356 resid = csio->dxfer_len; 2357 info = resid; 2358 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2359 if (softc->media_blksize) 2360 info /= softc->media_blksize; 2361 } 2362 } 2363 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2364 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2365 sizeof (struct scsi_sense_data)); 2366 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2367 (int) csio->cdb_len); 2368 softc->last_io_resid = resid; 2369 softc->last_resid_was_io = 1; 2370 } else { 2371 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2372 sizeof (struct scsi_sense_data)); 2373 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2374 (int) csio->cdb_len); 2375 softc->last_ctl_resid = resid; 2376 softc->last_resid_was_io = 0; 2377 } 2378 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2379 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2380 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2381 sense_key, asc, ascq, status, 2382 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2383 } else { 2384 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2385 ("Cam Status 0x%x\n", status)); 2386 } 2387 2388 switch (status) { 2389 case CAM_REQ_CMP: 2390 return (0); 2391 case CAM_SCSI_STATUS_ERROR: 2392 /* 2393 * If a read/write command, we handle it here. 2394 */ 2395 if (CCB_Type(csio) != SA_CCB_WAITING) { 2396 break; 2397 } 2398 /* 2399 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2400 * on a non read/write command, we assume it's not an error 2401 * and propagate the residule and return. 2402 */ 2403 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2404 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2405 csio->resid = resid; 2406 QFRLS(ccb); 2407 return (0); 2408 } 2409 /* 2410 * Otherwise, we let the common code handle this. 2411 */ 2412 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2413 2414 /* 2415 * XXX: To Be Fixed 2416 * We cannot depend upon CAM honoring retry counts for these. 2417 */ 2418 case CAM_SCSI_BUS_RESET: 2419 case CAM_BDR_SENT: 2420 if (ccb->ccb_h.retry_count <= 0) { 2421 return (EIO); 2422 } 2423 /* FALLTHROUGH */ 2424 default: 2425 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2426 } 2427 2428 /* 2429 * Handle filemark, end of tape, mismatched record sizes.... 2430 * From this point out, we're only handling read/write cases. 2431 * Handle writes && reads differently. 2432 */ 2433 2434 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2435 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2436 csio->resid = resid; 2437 error = ENOSPC; 2438 } else if (sense->flags & SSD_EOM) { 2439 softc->flags |= SA_FLAG_EOM_PENDING; 2440 /* 2441 * Grotesque as it seems, the few times 2442 * I've actually seen a non-zero resid, 2443 * the tape drive actually lied and had 2444 * written all the data!. 2445 */ 2446 csio->resid = 0; 2447 } 2448 } else { 2449 csio->resid = resid; 2450 if (sense_key == SSD_KEY_BLANK_CHECK) { 2451 if (softc->quirks & SA_QUIRK_1FM) { 2452 error = 0; 2453 softc->flags |= SA_FLAG_EOM_PENDING; 2454 } else { 2455 error = EIO; 2456 } 2457 } else if (sense->flags & SSD_FILEMARK) { 2458 if (softc->flags & SA_FLAG_FIXED) { 2459 error = -1; 2460 softc->flags |= SA_FLAG_EOF_PENDING; 2461 } 2462 /* 2463 * Unconditionally, if we detected a filemark on a read, 2464 * mark that we've run moved a file ahead. 2465 */ 2466 if (softc->fileno != (daddr_t) -1) { 2467 softc->fileno++; 2468 softc->blkno = 0; 2469 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2470 } 2471 } 2472 } 2473 2474 /* 2475 * Incorrect Length usually applies to read, but can apply to writes. 2476 */ 2477 if (error == 0 && (sense->flags & SSD_ILI)) { 2478 if (info < 0) { 2479 xpt_print(csio->ccb_h.path, toobig, 2480 csio->dxfer_len - info); 2481 csio->resid = csio->dxfer_len; 2482 error = EIO; 2483 } else { 2484 csio->resid = resid; 2485 if (softc->flags & SA_FLAG_FIXED) { 2486 softc->flags |= SA_FLAG_EIO_PENDING; 2487 } 2488 /* 2489 * Bump the block number if we hadn't seen a filemark. 2490 * Do this independent of errors (we've moved anyway). 2491 */ 2492 if ((sense->flags & SSD_FILEMARK) == 0) { 2493 if (softc->blkno != (daddr_t) -1) { 2494 softc->blkno++; 2495 csio->ccb_h.ccb_pflags |= 2496 SA_POSITION_UPDATED; 2497 } 2498 } 2499 } 2500 } 2501 2502 if (error <= 0) { 2503 /* 2504 * Unfreeze the queue if frozen as we're not returning anything 2505 * to our waiters that would indicate an I/O error has occurred 2506 * (yet). 2507 */ 2508 QFRLS(ccb); 2509 error = 0; 2510 } 2511 return (error); 2512 } 2513 2514 static int 2515 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2516 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2517 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2518 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2519 sa_comp_t *tcs) 2520 { 2521 union ccb *ccb; 2522 void *mode_buffer; 2523 struct scsi_mode_header_6 *mode_hdr; 2524 struct scsi_mode_blk_desc *mode_blk; 2525 int mode_buffer_len; 2526 struct sa_softc *softc; 2527 u_int8_t cpage; 2528 int error; 2529 cam_status status; 2530 2531 softc = (struct sa_softc *)periph->softc; 2532 ccb = cam_periph_getccb(periph, 1); 2533 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2534 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2535 else 2536 cpage = SA_DATA_COMPRESSION_PAGE; 2537 2538 retry: 2539 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2540 2541 if (params_to_get & SA_PARAM_COMPRESSION) { 2542 if (softc->quirks & SA_QUIRK_NOCOMP) { 2543 *comp_supported = FALSE; 2544 params_to_get &= ~SA_PARAM_COMPRESSION; 2545 } else 2546 mode_buffer_len += sizeof (sa_comp_t); 2547 } 2548 2549 /* XXX Fix M_NOWAIT */ 2550 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2551 if (mode_buffer == NULL) { 2552 xpt_release_ccb(ccb); 2553 return (ENOMEM); 2554 } 2555 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2556 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2557 2558 /* it is safe to retry this */ 2559 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2560 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2561 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2562 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2563 2564 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2565 softc->device_stats); 2566 QFRLS(ccb); 2567 2568 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2569 2570 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2571 /* 2572 * Hmm. Let's see if we can try another page... 2573 * If we've already done that, give up on compression 2574 * for this device and remember this for the future 2575 * and attempt the request without asking for compression 2576 * info. 2577 */ 2578 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2579 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2580 goto retry; 2581 } 2582 softc->quirks |= SA_QUIRK_NOCOMP; 2583 free(mode_buffer, M_SCSISA); 2584 goto retry; 2585 } else if (status == CAM_SCSI_STATUS_ERROR) { 2586 /* Tell the user about the fatal error. */ 2587 scsi_sense_print(&ccb->csio); 2588 goto sagetparamsexit; 2589 } 2590 2591 /* 2592 * If the user only wants the compression information, and 2593 * the device doesn't send back the block descriptor, it's 2594 * no big deal. If the user wants more than just 2595 * compression, though, and the device doesn't pass back the 2596 * block descriptor, we need to send another mode sense to 2597 * get the block descriptor. 2598 */ 2599 if ((mode_hdr->blk_desc_len == 0) && 2600 (params_to_get & SA_PARAM_COMPRESSION) && 2601 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2602 2603 /* 2604 * Decrease the mode buffer length by the size of 2605 * the compression page, to make sure the data 2606 * there doesn't get overwritten. 2607 */ 2608 mode_buffer_len -= sizeof (sa_comp_t); 2609 2610 /* 2611 * Now move the compression page that we presumably 2612 * got back down the memory chunk a little bit so 2613 * it doesn't get spammed. 2614 */ 2615 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2616 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2617 2618 /* 2619 * Now, we issue another mode sense and just ask 2620 * for the block descriptor, etc. 2621 */ 2622 2623 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2624 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2625 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2626 SCSIOP_TIMEOUT); 2627 2628 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2629 softc->device_stats); 2630 QFRLS(ccb); 2631 2632 if (error != 0) 2633 goto sagetparamsexit; 2634 } 2635 2636 if (params_to_get & SA_PARAM_BLOCKSIZE) 2637 *blocksize = scsi_3btoul(mode_blk->blklen); 2638 2639 if (params_to_get & SA_PARAM_NUMBLOCKS) 2640 *numblocks = scsi_3btoul(mode_blk->nblocks); 2641 2642 if (params_to_get & SA_PARAM_BUFF_MODE) 2643 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2644 2645 if (params_to_get & SA_PARAM_DENSITY) 2646 *density = mode_blk->density; 2647 2648 if (params_to_get & SA_PARAM_WP) 2649 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2650 2651 if (params_to_get & SA_PARAM_SPEED) 2652 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2653 2654 if (params_to_get & SA_PARAM_COMPRESSION) { 2655 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2656 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2657 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2658 *comp_supported = 2659 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2660 *comp_enabled = 2661 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2662 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2663 } else { 2664 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2665 /* 2666 * We don't really know whether this device supports 2667 * Data Compression if the algorithm field is 2668 * zero. Just say we do. 2669 */ 2670 *comp_supported = TRUE; 2671 *comp_enabled = 2672 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2673 *comp_algorithm = cp->sel_comp_alg; 2674 } 2675 if (tcs != NULL) 2676 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2677 } 2678 2679 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2680 int idx; 2681 char *xyz = mode_buffer; 2682 xpt_print_path(periph->path); 2683 printf("Mode Sense Data="); 2684 for (idx = 0; idx < mode_buffer_len; idx++) 2685 printf(" 0x%02x", xyz[idx] & 0xff); 2686 printf("\n"); 2687 } 2688 2689 sagetparamsexit: 2690 2691 xpt_release_ccb(ccb); 2692 free(mode_buffer, M_SCSISA); 2693 return (error); 2694 } 2695 2696 /* 2697 * The purpose of this function is to set one of four different parameters 2698 * for a tape drive: 2699 * - blocksize 2700 * - density 2701 * - compression / compression algorithm 2702 * - buffering mode 2703 * 2704 * The assumption is that this will be called from saioctl(), and therefore 2705 * from a process context. Thus the waiting malloc calls below. If that 2706 * assumption ever changes, the malloc calls should be changed to be 2707 * NOWAIT mallocs. 2708 * 2709 * Any or all of the four parameters may be set when this function is 2710 * called. It should handle setting more than one parameter at once. 2711 */ 2712 static int 2713 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2714 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2715 u_int32_t sense_flags) 2716 { 2717 struct sa_softc *softc; 2718 u_int32_t current_blocksize; 2719 u_int32_t current_calg; 2720 u_int8_t current_density; 2721 u_int8_t current_speed; 2722 int comp_enabled, comp_supported; 2723 void *mode_buffer; 2724 int mode_buffer_len; 2725 struct scsi_mode_header_6 *mode_hdr; 2726 struct scsi_mode_blk_desc *mode_blk; 2727 sa_comp_t *ccomp, *cpage; 2728 int buff_mode; 2729 union ccb *ccb = NULL; 2730 int error; 2731 2732 softc = (struct sa_softc *)periph->softc; 2733 2734 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2735 if (ccomp == NULL) 2736 return (ENOMEM); 2737 2738 /* 2739 * Since it doesn't make sense to set the number of blocks, or 2740 * write protection, we won't try to get the current value. We 2741 * always want to get the blocksize, so we can set it back to the 2742 * proper value. 2743 */ 2744 error = sagetparams(periph, 2745 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2746 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2747 ¤t_speed, &comp_supported, &comp_enabled, 2748 ¤t_calg, ccomp); 2749 2750 if (error != 0) { 2751 free(ccomp, M_SCSISA); 2752 return (error); 2753 } 2754 2755 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2756 if (params_to_set & SA_PARAM_COMPRESSION) 2757 mode_buffer_len += sizeof (sa_comp_t); 2758 2759 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2760 if (mode_buffer == NULL) { 2761 free(ccomp, M_SCSISA); 2762 return (ENOMEM); 2763 } 2764 2765 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2766 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2767 2768 ccb = cam_periph_getccb(periph, 1); 2769 2770 retry: 2771 2772 if (params_to_set & SA_PARAM_COMPRESSION) { 2773 if (mode_blk) { 2774 cpage = (sa_comp_t *)&mode_blk[1]; 2775 } else { 2776 cpage = (sa_comp_t *)&mode_hdr[1]; 2777 } 2778 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2779 cpage->hdr.pagecode &= ~0x80; 2780 } else 2781 cpage = NULL; 2782 2783 /* 2784 * If the caller wants us to set the blocksize, use the one they 2785 * pass in. Otherwise, use the blocksize we got back from the 2786 * mode select above. 2787 */ 2788 if (mode_blk) { 2789 if (params_to_set & SA_PARAM_BLOCKSIZE) 2790 scsi_ulto3b(blocksize, mode_blk->blklen); 2791 else 2792 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2793 2794 /* 2795 * Set density if requested, else preserve old density. 2796 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2797 * devices, else density we've latched up in our softc. 2798 */ 2799 if (params_to_set & SA_PARAM_DENSITY) { 2800 mode_blk->density = density; 2801 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2802 mode_blk->density = SCSI_SAME_DENSITY; 2803 } else { 2804 mode_blk->density = softc->media_density; 2805 } 2806 } 2807 2808 /* 2809 * For mode selects, these two fields must be zero. 2810 */ 2811 mode_hdr->data_length = 0; 2812 mode_hdr->medium_type = 0; 2813 2814 /* set the speed to the current value */ 2815 mode_hdr->dev_spec = current_speed; 2816 2817 /* if set, set single-initiator buffering mode */ 2818 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2819 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2820 } 2821 2822 if (mode_blk) 2823 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2824 else 2825 mode_hdr->blk_desc_len = 0; 2826 2827 /* 2828 * First, if the user wants us to set the compression algorithm or 2829 * just turn compression on, check to make sure that this drive 2830 * supports compression. 2831 */ 2832 if (params_to_set & SA_PARAM_COMPRESSION) { 2833 /* 2834 * If the compression algorithm is 0, disable compression. 2835 * If the compression algorithm is non-zero, enable 2836 * compression and set the compression type to the 2837 * specified compression algorithm, unless the algorithm is 2838 * MT_COMP_ENABLE. In that case, we look at the 2839 * compression algorithm that is currently set and if it is 2840 * non-zero, we leave it as-is. If it is zero, and we have 2841 * saved a compression algorithm from a time when 2842 * compression was enabled before, set the compression to 2843 * the saved value. 2844 */ 2845 switch (ccomp->hdr.pagecode & ~0x80) { 2846 case SA_DEVICE_CONFIGURATION_PAGE: 2847 { 2848 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2849 if (calg == 0) { 2850 dcp->sel_comp_alg = SA_COMP_NONE; 2851 break; 2852 } 2853 if (calg != MT_COMP_ENABLE) { 2854 dcp->sel_comp_alg = calg; 2855 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2856 softc->saved_comp_algorithm != 0) { 2857 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2858 } 2859 break; 2860 } 2861 case SA_DATA_COMPRESSION_PAGE: 2862 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2863 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2864 if (calg == 0) { 2865 /* 2866 * Disable compression, but leave the 2867 * decompression and the capability bit 2868 * alone. 2869 */ 2870 dcp->dce_and_dcc = SA_DCP_DCC; 2871 dcp->dde_and_red |= SA_DCP_DDE; 2872 break; 2873 } 2874 /* enable compression && decompression */ 2875 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2876 dcp->dde_and_red |= SA_DCP_DDE; 2877 /* 2878 * If there, use compression algorithm from caller. 2879 * Otherwise, if there's a saved compression algorithm 2880 * and there is no current algorithm, use the saved 2881 * algorithm. Else parrot back what we got and hope 2882 * for the best. 2883 */ 2884 if (calg != MT_COMP_ENABLE) { 2885 scsi_ulto4b(calg, dcp->comp_algorithm); 2886 scsi_ulto4b(calg, dcp->decomp_algorithm); 2887 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2888 softc->saved_comp_algorithm != 0) { 2889 scsi_ulto4b(softc->saved_comp_algorithm, 2890 dcp->comp_algorithm); 2891 scsi_ulto4b(softc->saved_comp_algorithm, 2892 dcp->decomp_algorithm); 2893 } 2894 break; 2895 } 2896 /* 2897 * Compression does not appear to be supported- 2898 * at least via the DATA COMPRESSION page. It 2899 * would be too much to ask us to believe that 2900 * the page itself is supported, but incorrectly 2901 * reports an ability to manipulate data compression, 2902 * so we'll assume that this device doesn't support 2903 * compression. We can just fall through for that. 2904 */ 2905 /* FALLTHROUGH */ 2906 default: 2907 /* 2908 * The drive doesn't seem to support compression, 2909 * so turn off the set compression bit. 2910 */ 2911 params_to_set &= ~SA_PARAM_COMPRESSION; 2912 xpt_print(periph->path, 2913 "device does not seem to support compression\n"); 2914 2915 /* 2916 * If that was the only thing the user wanted us to set, 2917 * clean up allocated resources and return with 2918 * 'operation not supported'. 2919 */ 2920 if (params_to_set == SA_PARAM_NONE) { 2921 free(mode_buffer, M_SCSISA); 2922 xpt_release_ccb(ccb); 2923 return (ENODEV); 2924 } 2925 2926 /* 2927 * That wasn't the only thing the user wanted us to set. 2928 * So, decrease the stated mode buffer length by the 2929 * size of the compression mode page. 2930 */ 2931 mode_buffer_len -= sizeof(sa_comp_t); 2932 } 2933 } 2934 2935 /* It is safe to retry this operation */ 2936 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2937 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2938 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2939 2940 error = cam_periph_runccb(ccb, saerror, 0, 2941 sense_flags, softc->device_stats); 2942 QFRLS(ccb); 2943 2944 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2945 int idx; 2946 char *xyz = mode_buffer; 2947 xpt_print_path(periph->path); 2948 printf("Err%d, Mode Select Data=", error); 2949 for (idx = 0; idx < mode_buffer_len; idx++) 2950 printf(" 0x%02x", xyz[idx] & 0xff); 2951 printf("\n"); 2952 } 2953 2954 2955 if (error) { 2956 /* 2957 * If we can, try without setting density/blocksize. 2958 */ 2959 if (mode_blk) { 2960 if ((params_to_set & 2961 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2962 mode_blk = NULL; 2963 goto retry; 2964 } 2965 } else { 2966 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2967 cpage = (sa_comp_t *)&mode_blk[1]; 2968 } 2969 2970 /* 2971 * If we were setting the blocksize, and that failed, we 2972 * want to set it to its original value. If we weren't 2973 * setting the blocksize, we don't want to change it. 2974 */ 2975 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2976 2977 /* 2978 * Set density if requested, else preserve old density. 2979 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2980 * devices, else density we've latched up in our softc. 2981 */ 2982 if (params_to_set & SA_PARAM_DENSITY) { 2983 mode_blk->density = current_density; 2984 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2985 mode_blk->density = SCSI_SAME_DENSITY; 2986 } else { 2987 mode_blk->density = softc->media_density; 2988 } 2989 2990 if (params_to_set & SA_PARAM_COMPRESSION) 2991 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2992 2993 /* 2994 * The retry count is the only CCB field that might have been 2995 * changed that we care about, so reset it back to 1. 2996 */ 2997 ccb->ccb_h.retry_count = 1; 2998 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2999 softc->device_stats); 3000 QFRLS(ccb); 3001 } 3002 3003 xpt_release_ccb(ccb); 3004 3005 if (ccomp != NULL) 3006 free(ccomp, M_SCSISA); 3007 3008 if (params_to_set & SA_PARAM_COMPRESSION) { 3009 if (error) { 3010 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3011 /* 3012 * Even if we get an error setting compression, 3013 * do not say that we don't support it. We could 3014 * have been wrong, or it may be media specific. 3015 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3016 */ 3017 softc->saved_comp_algorithm = softc->comp_algorithm; 3018 softc->comp_algorithm = 0; 3019 } else { 3020 softc->flags |= SA_FLAG_COMP_ENABLED; 3021 softc->comp_algorithm = calg; 3022 } 3023 } 3024 3025 free(mode_buffer, M_SCSISA); 3026 return (error); 3027 } 3028 3029 static void 3030 saprevent(struct cam_periph *periph, int action) 3031 { 3032 struct sa_softc *softc; 3033 union ccb *ccb; 3034 int error, sf; 3035 3036 softc = (struct sa_softc *)periph->softc; 3037 3038 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3039 return; 3040 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3041 return; 3042 3043 /* 3044 * We can be quiet about illegal requests. 3045 */ 3046 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3047 sf = 0; 3048 } else 3049 sf = SF_QUIET_IR; 3050 3051 ccb = cam_periph_getccb(periph, 1); 3052 3053 /* It is safe to retry this operation */ 3054 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3055 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3056 3057 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3058 QFRLS(ccb); 3059 if (error == 0) { 3060 if (action == PR_ALLOW) 3061 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3062 else 3063 softc->flags |= SA_FLAG_TAPE_LOCKED; 3064 } 3065 3066 xpt_release_ccb(ccb); 3067 } 3068 3069 static int 3070 sarewind(struct cam_periph *periph) 3071 { 3072 union ccb *ccb; 3073 struct sa_softc *softc; 3074 int error; 3075 3076 softc = (struct sa_softc *)periph->softc; 3077 3078 ccb = cam_periph_getccb(periph, 1); 3079 3080 /* It is safe to retry this operation */ 3081 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3082 SSD_FULL_SIZE, REWIND_TIMEOUT); 3083 3084 softc->dsreg = MTIO_DSREG_REW; 3085 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3086 softc->dsreg = MTIO_DSREG_REST; 3087 3088 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3089 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3090 3091 xpt_release_ccb(ccb); 3092 if (error == 0) 3093 softc->fileno = softc->blkno = (daddr_t) 0; 3094 else 3095 softc->fileno = softc->blkno = (daddr_t) -1; 3096 return (error); 3097 } 3098 3099 static int 3100 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3101 { 3102 union ccb *ccb; 3103 struct sa_softc *softc; 3104 int error; 3105 3106 softc = (struct sa_softc *)periph->softc; 3107 3108 ccb = cam_periph_getccb(periph, 1); 3109 3110 /* This cannot be retried */ 3111 3112 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3113 SSD_FULL_SIZE, SPACE_TIMEOUT); 3114 3115 /* 3116 * Clear residual because we will be using it. 3117 */ 3118 softc->last_ctl_resid = 0; 3119 3120 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3121 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3122 softc->dsreg = MTIO_DSREG_REST; 3123 3124 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3125 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3126 3127 xpt_release_ccb(ccb); 3128 3129 /* 3130 * If a spacing operation has failed, we need to invalidate 3131 * this mount. 3132 * 3133 * If the spacing operation was setmarks or to end of recorded data, 3134 * we no longer know our relative position. 3135 * 3136 * If the spacing operations was spacing files in reverse, we 3137 * take account of the residual, but still check against less 3138 * than zero- if we've gone negative, we must have hit BOT. 3139 * 3140 * If the spacing operations was spacing records in reverse and 3141 * we have a residual, we've either hit BOT or hit a filemark. 3142 * In the former case, we know our new record number (0). In 3143 * the latter case, we have absolutely no idea what the real 3144 * record number is- we've stopped between the end of the last 3145 * record in the previous file and the filemark that stopped 3146 * our spacing backwards. 3147 */ 3148 if (error) { 3149 softc->fileno = softc->blkno = (daddr_t) -1; 3150 } else if (code == SS_SETMARKS || code == SS_EOD) { 3151 softc->fileno = softc->blkno = (daddr_t) -1; 3152 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3153 softc->fileno += (count - softc->last_ctl_resid); 3154 if (softc->fileno < 0) /* we must of hit BOT */ 3155 softc->fileno = 0; 3156 softc->blkno = 0; 3157 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3158 softc->blkno += (count - softc->last_ctl_resid); 3159 if (count < 0) { 3160 if (softc->last_ctl_resid || softc->blkno < 0) { 3161 if (softc->fileno == 0) { 3162 softc->blkno = 0; 3163 } else { 3164 softc->blkno = (daddr_t) -1; 3165 } 3166 } 3167 } 3168 } 3169 return (error); 3170 } 3171 3172 static int 3173 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3174 { 3175 union ccb *ccb; 3176 struct sa_softc *softc; 3177 int error, nwm = 0; 3178 3179 softc = (struct sa_softc *)periph->softc; 3180 if (softc->open_rdonly) 3181 return (EBADF); 3182 3183 ccb = cam_periph_getccb(periph, 1); 3184 /* 3185 * Clear residual because we will be using it. 3186 */ 3187 softc->last_ctl_resid = 0; 3188 3189 softc->dsreg = MTIO_DSREG_FMK; 3190 /* this *must* not be retried */ 3191 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3192 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3193 softc->dsreg = MTIO_DSREG_REST; 3194 3195 3196 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3197 3198 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3199 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3200 3201 if (error == 0 && nmarks) { 3202 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3203 nwm = nmarks - softc->last_ctl_resid; 3204 softc->filemarks += nwm; 3205 } 3206 3207 xpt_release_ccb(ccb); 3208 3209 /* 3210 * Update relative positions (if we're doing that). 3211 */ 3212 if (error) { 3213 softc->fileno = softc->blkno = (daddr_t) -1; 3214 } else if (softc->fileno != (daddr_t) -1) { 3215 softc->fileno += nwm; 3216 softc->blkno = 0; 3217 } 3218 return (error); 3219 } 3220 3221 static int 3222 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3223 { 3224 struct scsi_tape_position_data loc; 3225 union ccb *ccb; 3226 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3227 int error; 3228 3229 /* 3230 * We try and flush any buffered writes here if we were writing 3231 * and we're trying to get hardware block position. It eats 3232 * up performance substantially, but I'm wary of drive firmware. 3233 * 3234 * I think that *logical* block position is probably okay- 3235 * but hardware block position might have to wait for data 3236 * to hit media to be valid. Caveat Emptor. 3237 */ 3238 3239 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3240 error = sawritefilemarks(periph, 0, 0); 3241 if (error && error != EACCES) 3242 return (error); 3243 } 3244 3245 ccb = cam_periph_getccb(periph, 1); 3246 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3247 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3248 softc->dsreg = MTIO_DSREG_RBSY; 3249 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3250 softc->dsreg = MTIO_DSREG_REST; 3251 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3252 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3253 3254 if (error == 0) { 3255 if (loc.flags & SA_RPOS_UNCERTAIN) { 3256 error = EINVAL; /* nothing is certain */ 3257 } else { 3258 *blkptr = scsi_4btoul(loc.firstblk); 3259 } 3260 } 3261 3262 xpt_release_ccb(ccb); 3263 return (error); 3264 } 3265 3266 static int 3267 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3268 { 3269 union ccb *ccb; 3270 struct sa_softc *softc; 3271 int error; 3272 3273 /* 3274 * We used to try and flush any buffered writes here. 3275 * Now we push this onto user applications to either 3276 * flush the pending writes themselves (via a zero count 3277 * WRITE FILEMARKS command) or they can trust their tape 3278 * drive to do this correctly for them. 3279 */ 3280 3281 softc = (struct sa_softc *)periph->softc; 3282 ccb = cam_periph_getccb(periph, 1); 3283 3284 3285 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3286 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3287 3288 3289 softc->dsreg = MTIO_DSREG_POS; 3290 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3291 softc->dsreg = MTIO_DSREG_REST; 3292 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3293 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3294 xpt_release_ccb(ccb); 3295 /* 3296 * Note relative file && block number position as now unknown. 3297 */ 3298 softc->fileno = softc->blkno = (daddr_t) -1; 3299 return (error); 3300 } 3301 3302 static int 3303 saretension(struct cam_periph *periph) 3304 { 3305 union ccb *ccb; 3306 struct sa_softc *softc; 3307 int error; 3308 3309 softc = (struct sa_softc *)periph->softc; 3310 3311 ccb = cam_periph_getccb(periph, 1); 3312 3313 /* It is safe to retry this operation */ 3314 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3315 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3316 3317 softc->dsreg = MTIO_DSREG_TEN; 3318 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3319 softc->dsreg = MTIO_DSREG_REST; 3320 3321 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3322 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3323 xpt_release_ccb(ccb); 3324 if (error == 0) 3325 softc->fileno = softc->blkno = (daddr_t) 0; 3326 else 3327 softc->fileno = softc->blkno = (daddr_t) -1; 3328 return (error); 3329 } 3330 3331 static int 3332 sareservereleaseunit(struct cam_periph *periph, int reserve) 3333 { 3334 union ccb *ccb; 3335 struct sa_softc *softc; 3336 int error; 3337 3338 softc = (struct sa_softc *)periph->softc; 3339 ccb = cam_periph_getccb(periph, 1); 3340 3341 /* It is safe to retry this operation */ 3342 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3343 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3344 softc->dsreg = MTIO_DSREG_RBSY; 3345 error = cam_periph_runccb(ccb, saerror, 0, 3346 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3347 softc->dsreg = MTIO_DSREG_REST; 3348 QFRLS(ccb); 3349 xpt_release_ccb(ccb); 3350 3351 /* 3352 * If the error was Illegal Request, then the device doesn't support 3353 * RESERVE/RELEASE. This is not an error. 3354 */ 3355 if (error == EINVAL) { 3356 error = 0; 3357 } 3358 3359 return (error); 3360 } 3361 3362 static int 3363 saloadunload(struct cam_periph *periph, int load) 3364 { 3365 union ccb *ccb; 3366 struct sa_softc *softc; 3367 int error; 3368 3369 softc = (struct sa_softc *)periph->softc; 3370 3371 ccb = cam_periph_getccb(periph, 1); 3372 3373 /* It is safe to retry this operation */ 3374 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3375 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3376 3377 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3378 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3379 softc->dsreg = MTIO_DSREG_REST; 3380 QFRLS(ccb); 3381 xpt_release_ccb(ccb); 3382 3383 if (error || load == 0) 3384 softc->fileno = softc->blkno = (daddr_t) -1; 3385 else if (error == 0) 3386 softc->fileno = softc->blkno = (daddr_t) 0; 3387 return (error); 3388 } 3389 3390 static int 3391 saerase(struct cam_periph *periph, int longerase) 3392 { 3393 3394 union ccb *ccb; 3395 struct sa_softc *softc; 3396 int error; 3397 3398 softc = (struct sa_softc *)periph->softc; 3399 if (softc->open_rdonly) 3400 return (EBADF); 3401 3402 ccb = cam_periph_getccb(periph, 1); 3403 3404 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3405 SSD_FULL_SIZE, ERASE_TIMEOUT); 3406 3407 softc->dsreg = MTIO_DSREG_ZER; 3408 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3409 softc->dsreg = MTIO_DSREG_REST; 3410 3411 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3412 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3413 xpt_release_ccb(ccb); 3414 return (error); 3415 } 3416 3417 #endif /* _KERNEL */ 3418 3419 /* 3420 * Read tape block limits command. 3421 */ 3422 void 3423 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3424 void (*cbfcnp)(struct cam_periph *, union ccb *), 3425 u_int8_t tag_action, 3426 struct scsi_read_block_limits_data *rlimit_buf, 3427 u_int8_t sense_len, u_int32_t timeout) 3428 { 3429 struct scsi_read_block_limits *scsi_cmd; 3430 3431 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3432 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3433 sizeof(*scsi_cmd), timeout); 3434 3435 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3436 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3437 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3438 } 3439 3440 void 3441 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3442 void (*cbfcnp)(struct cam_periph *, union ccb *), 3443 u_int8_t tag_action, int readop, int sli, 3444 int fixed, u_int32_t length, u_int8_t *data_ptr, 3445 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3446 { 3447 struct scsi_sa_rw *scsi_cmd; 3448 3449 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3450 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3451 scsi_cmd->sli_fixed = 0; 3452 if (sli && readop) 3453 scsi_cmd->sli_fixed |= SAR_SLI; 3454 if (fixed) 3455 scsi_cmd->sli_fixed |= SARW_FIXED; 3456 scsi_ulto3b(length, scsi_cmd->length); 3457 scsi_cmd->control = 0; 3458 3459 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3460 tag_action, data_ptr, dxfer_len, sense_len, 3461 sizeof(*scsi_cmd), timeout); 3462 } 3463 3464 void 3465 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3466 void (*cbfcnp)(struct cam_periph *, union ccb *), 3467 u_int8_t tag_action, int immediate, int eot, 3468 int reten, int load, u_int8_t sense_len, 3469 u_int32_t timeout) 3470 { 3471 struct scsi_load_unload *scsi_cmd; 3472 3473 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3474 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3475 scsi_cmd->opcode = LOAD_UNLOAD; 3476 if (immediate) 3477 scsi_cmd->immediate = SLU_IMMED; 3478 if (eot) 3479 scsi_cmd->eot_reten_load |= SLU_EOT; 3480 if (reten) 3481 scsi_cmd->eot_reten_load |= SLU_RETEN; 3482 if (load) 3483 scsi_cmd->eot_reten_load |= SLU_LOAD; 3484 3485 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3486 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3487 } 3488 3489 void 3490 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3491 void (*cbfcnp)(struct cam_periph *, union ccb *), 3492 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3493 u_int32_t timeout) 3494 { 3495 struct scsi_rewind *scsi_cmd; 3496 3497 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3498 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3499 scsi_cmd->opcode = REWIND; 3500 if (immediate) 3501 scsi_cmd->immediate = SREW_IMMED; 3502 3503 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3504 0, sense_len, sizeof(*scsi_cmd), timeout); 3505 } 3506 3507 void 3508 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3509 void (*cbfcnp)(struct cam_periph *, union ccb *), 3510 u_int8_t tag_action, scsi_space_code code, 3511 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3512 { 3513 struct scsi_space *scsi_cmd; 3514 3515 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3516 scsi_cmd->opcode = SPACE; 3517 scsi_cmd->code = code; 3518 scsi_ulto3b(count, scsi_cmd->count); 3519 scsi_cmd->control = 0; 3520 3521 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3522 0, sense_len, sizeof(*scsi_cmd), timeout); 3523 } 3524 3525 void 3526 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3527 void (*cbfcnp)(struct cam_periph *, union ccb *), 3528 u_int8_t tag_action, int immediate, int setmark, 3529 u_int32_t num_marks, u_int8_t sense_len, 3530 u_int32_t timeout) 3531 { 3532 struct scsi_write_filemarks *scsi_cmd; 3533 3534 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3535 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3536 scsi_cmd->opcode = WRITE_FILEMARKS; 3537 if (immediate) 3538 scsi_cmd->byte2 |= SWFMRK_IMMED; 3539 if (setmark) 3540 scsi_cmd->byte2 |= SWFMRK_WSMK; 3541 3542 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3543 3544 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3545 0, sense_len, sizeof(*scsi_cmd), timeout); 3546 } 3547 3548 /* 3549 * The reserve and release unit commands differ only by their opcodes. 3550 */ 3551 void 3552 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3553 void (*cbfcnp)(struct cam_periph *, union ccb *), 3554 u_int8_t tag_action, int third_party, 3555 int third_party_id, u_int8_t sense_len, 3556 u_int32_t timeout, int reserve) 3557 { 3558 struct scsi_reserve_release_unit *scsi_cmd; 3559 3560 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3561 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3562 3563 if (reserve) 3564 scsi_cmd->opcode = RESERVE_UNIT; 3565 else 3566 scsi_cmd->opcode = RELEASE_UNIT; 3567 3568 if (third_party) { 3569 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3570 scsi_cmd->lun_thirdparty |= 3571 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3572 } 3573 3574 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3575 0, sense_len, sizeof(*scsi_cmd), timeout); 3576 } 3577 3578 void 3579 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3580 void (*cbfcnp)(struct cam_periph *, union ccb *), 3581 u_int8_t tag_action, int immediate, int long_erase, 3582 u_int8_t sense_len, u_int32_t timeout) 3583 { 3584 struct scsi_erase *scsi_cmd; 3585 3586 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3587 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3588 3589 scsi_cmd->opcode = ERASE; 3590 3591 if (immediate) 3592 scsi_cmd->lun_imm_long |= SE_IMMED; 3593 3594 if (long_erase) 3595 scsi_cmd->lun_imm_long |= SE_LONG; 3596 3597 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3598 0, sense_len, sizeof(*scsi_cmd), timeout); 3599 } 3600 3601 /* 3602 * Read Tape Position command. 3603 */ 3604 void 3605 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3606 void (*cbfcnp)(struct cam_periph *, union ccb *), 3607 u_int8_t tag_action, int hardsoft, 3608 struct scsi_tape_position_data *sbp, 3609 u_int8_t sense_len, u_int32_t timeout) 3610 { 3611 struct scsi_tape_read_position *scmd; 3612 3613 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3614 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3615 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3616 bzero(scmd, sizeof(*scmd)); 3617 scmd->opcode = READ_POSITION; 3618 scmd->byte1 = hardsoft; 3619 } 3620 3621 /* 3622 * Set Tape Position command. 3623 */ 3624 void 3625 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3626 void (*cbfcnp)(struct cam_periph *, union ccb *), 3627 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3628 u_int8_t sense_len, u_int32_t timeout) 3629 { 3630 struct scsi_tape_locate *scmd; 3631 3632 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3633 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3634 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3635 bzero(scmd, sizeof(*scmd)); 3636 scmd->opcode = LOCATE; 3637 if (hardsoft) 3638 scmd->byte1 |= SA_SPOS_BT; 3639 scsi_ulto4b(blkno, scmd->blkaddr); 3640 }
Cache object: 0e9039712c9795dd136bd63d7264a0e9
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