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("$FreeBSD$"); 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 static 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_int64_t _last_io_resid; 239 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 240 struct scsi_sense_data _last_ctl_sense; 241 u_int64_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 cam_periph_unlock(periph); 858 return (error); 859 } 860 didlockperiph = 1; 861 } 862 break; 863 864 case MTIOCTOP: 865 { 866 struct mtop *mt = (struct mtop *) arg; 867 868 /* 869 * Check to make sure it's an OP we can perform 870 * with no media inserted. 871 */ 872 switch (mt->mt_op) { 873 case MTSETBSIZ: 874 case MTSETDNSTY: 875 case MTCOMP: 876 mt = NULL; 877 /* FALLTHROUGH */ 878 default: 879 break; 880 } 881 if (mt != NULL) { 882 break; 883 } 884 /* FALLTHROUGH */ 885 } 886 case MTIOCSETEOTMODEL: 887 /* 888 * We need to acquire the peripheral here rather 889 * than at open time because we are sharing writable 890 * access to data structures. 891 */ 892 error = cam_periph_hold(periph, PRIBIO|PCATCH); 893 if (error != 0) { 894 cam_periph_unlock(periph); 895 return (error); 896 } 897 didlockperiph = 1; 898 break; 899 900 default: 901 cam_periph_unlock(periph); 902 return (EINVAL); 903 } 904 } 905 906 /* 907 * Find the device that the user is talking about 908 */ 909 switch (cmd) { 910 case MTIOCGET: 911 { 912 struct mtget *g = (struct mtget *)arg; 913 914 /* 915 * If this isn't the control mode device, actually go out 916 * and ask the drive again what it's set to. 917 */ 918 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 919 u_int8_t write_protect; 920 int comp_enabled, comp_supported; 921 error = sagetparams(periph, SA_PARAM_ALL, 922 &softc->media_blksize, &softc->media_density, 923 &softc->media_numblks, &softc->buffer_mode, 924 &write_protect, &softc->speed, &comp_supported, 925 &comp_enabled, &softc->comp_algorithm, NULL); 926 if (error) 927 break; 928 if (write_protect) 929 softc->flags |= SA_FLAG_TAPE_WP; 930 else 931 softc->flags &= ~SA_FLAG_TAPE_WP; 932 softc->flags &= ~(SA_FLAG_COMP_SUPP| 933 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 934 if (comp_supported) { 935 if (softc->saved_comp_algorithm == 0) 936 softc->saved_comp_algorithm = 937 softc->comp_algorithm; 938 softc->flags |= SA_FLAG_COMP_SUPP; 939 if (comp_enabled) 940 softc->flags |= SA_FLAG_COMP_ENABLED; 941 } else 942 softc->flags |= SA_FLAG_COMP_UNSUPP; 943 } 944 bzero(g, sizeof(struct mtget)); 945 g->mt_type = MT_ISAR; 946 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 947 g->mt_comp = MT_COMP_UNSUPP; 948 g->mt_comp0 = MT_COMP_UNSUPP; 949 g->mt_comp1 = MT_COMP_UNSUPP; 950 g->mt_comp2 = MT_COMP_UNSUPP; 951 g->mt_comp3 = MT_COMP_UNSUPP; 952 } else { 953 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 954 g->mt_comp = MT_COMP_DISABLED; 955 } else { 956 g->mt_comp = softc->comp_algorithm; 957 } 958 g->mt_comp0 = softc->comp_algorithm; 959 g->mt_comp1 = softc->comp_algorithm; 960 g->mt_comp2 = softc->comp_algorithm; 961 g->mt_comp3 = softc->comp_algorithm; 962 } 963 g->mt_density = softc->media_density; 964 g->mt_density0 = softc->media_density; 965 g->mt_density1 = softc->media_density; 966 g->mt_density2 = softc->media_density; 967 g->mt_density3 = softc->media_density; 968 g->mt_blksiz = softc->media_blksize; 969 g->mt_blksiz0 = softc->media_blksize; 970 g->mt_blksiz1 = softc->media_blksize; 971 g->mt_blksiz2 = softc->media_blksize; 972 g->mt_blksiz3 = softc->media_blksize; 973 g->mt_fileno = softc->fileno; 974 g->mt_blkno = softc->blkno; 975 g->mt_dsreg = (short) softc->dsreg; 976 /* 977 * Yes, we know that this is likely to overflow 978 */ 979 if (softc->last_resid_was_io) { 980 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 981 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 982 softc->last_io_resid = 0; 983 } 984 } 985 } else { 986 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 987 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 988 softc->last_ctl_resid = 0; 989 } 990 } 991 } 992 error = 0; 993 break; 994 } 995 case MTIOCERRSTAT: 996 { 997 struct scsi_tape_errors *sep = 998 &((union mterrstat *)arg)->scsi_errstat; 999 1000 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1001 ("saioctl: MTIOCERRSTAT\n")); 1002 1003 bzero(sep, sizeof(*sep)); 1004 sep->io_resid = softc->last_io_resid; 1005 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1006 sizeof (sep->io_sense)); 1007 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1008 sizeof (sep->io_cdb)); 1009 sep->ctl_resid = softc->last_ctl_resid; 1010 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1011 sizeof (sep->ctl_sense)); 1012 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1013 sizeof (sep->ctl_cdb)); 1014 1015 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1016 didlockperiph) 1017 bzero((caddr_t) &softc->errinfo, 1018 sizeof (softc->errinfo)); 1019 error = 0; 1020 break; 1021 } 1022 case MTIOCTOP: 1023 { 1024 struct mtop *mt; 1025 int count; 1026 1027 PENDING_MOUNT_CHECK(softc, periph, dev); 1028 1029 mt = (struct mtop *)arg; 1030 1031 1032 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1033 ("saioctl: op=0x%x count=0x%x\n", 1034 mt->mt_op, mt->mt_count)); 1035 1036 count = mt->mt_count; 1037 switch (mt->mt_op) { 1038 case MTWEOF: /* write an end-of-file marker */ 1039 /* 1040 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1041 * flag because by keeping track of filemarks 1042 * we have last written we know ehether or not 1043 * we need to write more when we close the device. 1044 */ 1045 error = sawritefilemarks(periph, count, FALSE); 1046 break; 1047 case MTWSS: /* write a setmark */ 1048 error = sawritefilemarks(periph, count, TRUE); 1049 break; 1050 case MTBSR: /* backward space record */ 1051 case MTFSR: /* forward space record */ 1052 case MTBSF: /* backward space file */ 1053 case MTFSF: /* forward space file */ 1054 case MTBSS: /* backward space setmark */ 1055 case MTFSS: /* forward space setmark */ 1056 case MTEOD: /* space to end of recorded medium */ 1057 { 1058 int nmarks; 1059 1060 spaceop = SS_FILEMARKS; 1061 nmarks = softc->filemarks; 1062 error = sacheckeod(periph); 1063 if (error) { 1064 xpt_print(periph->path, 1065 "EOD check prior to spacing failed\n"); 1066 softc->flags |= SA_FLAG_EIO_PENDING; 1067 break; 1068 } 1069 nmarks -= softc->filemarks; 1070 switch(mt->mt_op) { 1071 case MTBSR: 1072 count = -count; 1073 /* FALLTHROUGH */ 1074 case MTFSR: 1075 spaceop = SS_BLOCKS; 1076 break; 1077 case MTBSF: 1078 count = -count; 1079 /* FALLTHROUGH */ 1080 case MTFSF: 1081 break; 1082 case MTBSS: 1083 count = -count; 1084 /* FALLTHROUGH */ 1085 case MTFSS: 1086 spaceop = SS_SETMARKS; 1087 break; 1088 case MTEOD: 1089 spaceop = SS_EOD; 1090 count = 0; 1091 nmarks = 0; 1092 break; 1093 default: 1094 error = EINVAL; 1095 break; 1096 } 1097 if (error) 1098 break; 1099 1100 nmarks = softc->filemarks; 1101 /* 1102 * XXX: Why are we checking again? 1103 */ 1104 error = sacheckeod(periph); 1105 if (error) 1106 break; 1107 nmarks -= softc->filemarks; 1108 error = saspace(periph, count - nmarks, spaceop); 1109 /* 1110 * At this point, clear that we've written the tape 1111 * and that we've written any filemarks. We really 1112 * don't know what the applications wishes to do next- 1113 * the sacheckeod's will make sure we terminated the 1114 * tape correctly if we'd been writing, but the next 1115 * action the user application takes will set again 1116 * whether we need to write filemarks. 1117 */ 1118 softc->flags &= 1119 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1120 softc->filemarks = 0; 1121 break; 1122 } 1123 case MTREW: /* rewind */ 1124 PENDING_MOUNT_CHECK(softc, periph, dev); 1125 (void) sacheckeod(periph); 1126 error = sarewind(periph); 1127 /* see above */ 1128 softc->flags &= 1129 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1130 softc->flags &= ~SA_FLAG_ERR_PENDING; 1131 softc->filemarks = 0; 1132 break; 1133 case MTERASE: /* erase */ 1134 PENDING_MOUNT_CHECK(softc, periph, dev); 1135 error = saerase(periph, count); 1136 softc->flags &= 1137 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1138 softc->flags &= ~SA_FLAG_ERR_PENDING; 1139 break; 1140 case MTRETENS: /* re-tension tape */ 1141 PENDING_MOUNT_CHECK(softc, periph, dev); 1142 error = saretension(periph); 1143 softc->flags &= 1144 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1145 softc->flags &= ~SA_FLAG_ERR_PENDING; 1146 break; 1147 case MTOFFL: /* rewind and put the drive offline */ 1148 1149 PENDING_MOUNT_CHECK(softc, periph, dev); 1150 1151 (void) sacheckeod(periph); 1152 /* see above */ 1153 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1154 softc->filemarks = 0; 1155 1156 error = sarewind(periph); 1157 /* clear the frozen flag anyway */ 1158 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1159 1160 /* 1161 * Be sure to allow media removal before ejecting. 1162 */ 1163 1164 saprevent(periph, PR_ALLOW); 1165 if (error == 0) { 1166 error = saloadunload(periph, FALSE); 1167 if (error == 0) { 1168 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1169 } 1170 } 1171 break; 1172 1173 case MTNOP: /* no operation, sets status only */ 1174 case MTCACHE: /* enable controller cache */ 1175 case MTNOCACHE: /* disable controller cache */ 1176 error = 0; 1177 break; 1178 1179 case MTSETBSIZ: /* Set block size for device */ 1180 1181 PENDING_MOUNT_CHECK(softc, periph, dev); 1182 1183 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1184 0, 0, 0); 1185 if (error == 0) { 1186 softc->last_media_blksize = 1187 softc->media_blksize; 1188 softc->media_blksize = count; 1189 if (count) { 1190 softc->flags |= SA_FLAG_FIXED; 1191 if (powerof2(count)) { 1192 softc->blk_shift = 1193 ffs(count) - 1; 1194 softc->blk_mask = count - 1; 1195 } else { 1196 softc->blk_mask = ~0; 1197 softc->blk_shift = 0; 1198 } 1199 /* 1200 * Make the user's desire 'persistent'. 1201 */ 1202 softc->quirks &= ~SA_QUIRK_VARIABLE; 1203 softc->quirks |= SA_QUIRK_FIXED; 1204 } else { 1205 softc->flags &= ~SA_FLAG_FIXED; 1206 if (softc->max_blk == 0) { 1207 softc->max_blk = ~0; 1208 } 1209 softc->blk_shift = 0; 1210 if (softc->blk_gran != 0) { 1211 softc->blk_mask = 1212 softc->blk_gran - 1; 1213 } else { 1214 softc->blk_mask = 0; 1215 } 1216 /* 1217 * Make the user's desire 'persistent'. 1218 */ 1219 softc->quirks |= SA_QUIRK_VARIABLE; 1220 softc->quirks &= ~SA_QUIRK_FIXED; 1221 } 1222 } 1223 break; 1224 case MTSETDNSTY: /* Set density for device and mode */ 1225 PENDING_MOUNT_CHECK(softc, periph, dev); 1226 1227 if (count > UCHAR_MAX) { 1228 error = EINVAL; 1229 break; 1230 } else { 1231 error = sasetparams(periph, SA_PARAM_DENSITY, 1232 0, count, 0, 0); 1233 } 1234 break; 1235 case MTCOMP: /* enable compression */ 1236 PENDING_MOUNT_CHECK(softc, periph, dev); 1237 /* 1238 * Some devices don't support compression, and 1239 * don't like it if you ask them for the 1240 * compression page. 1241 */ 1242 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1243 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1244 error = ENODEV; 1245 break; 1246 } 1247 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1248 0, 0, count, SF_NO_PRINT); 1249 break; 1250 default: 1251 error = EINVAL; 1252 } 1253 break; 1254 } 1255 case MTIOCIEOT: 1256 case MTIOCEEOT: 1257 error = 0; 1258 break; 1259 case MTIOCRDSPOS: 1260 PENDING_MOUNT_CHECK(softc, periph, dev); 1261 error = sardpos(periph, 0, (u_int32_t *) arg); 1262 break; 1263 case MTIOCRDHPOS: 1264 PENDING_MOUNT_CHECK(softc, periph, dev); 1265 error = sardpos(periph, 1, (u_int32_t *) arg); 1266 break; 1267 case MTIOCSLOCATE: 1268 PENDING_MOUNT_CHECK(softc, periph, dev); 1269 error = sasetpos(periph, 0, (u_int32_t *) arg); 1270 break; 1271 case MTIOCHLOCATE: 1272 PENDING_MOUNT_CHECK(softc, periph, dev); 1273 error = sasetpos(periph, 1, (u_int32_t *) arg); 1274 break; 1275 case MTIOCGETEOTMODEL: 1276 error = 0; 1277 if (softc->quirks & SA_QUIRK_1FM) 1278 mode = 1; 1279 else 1280 mode = 2; 1281 *((u_int32_t *) arg) = mode; 1282 break; 1283 case MTIOCSETEOTMODEL: 1284 error = 0; 1285 switch (*((u_int32_t *) arg)) { 1286 case 1: 1287 softc->quirks &= ~SA_QUIRK_2FM; 1288 softc->quirks |= SA_QUIRK_1FM; 1289 break; 1290 case 2: 1291 softc->quirks &= ~SA_QUIRK_1FM; 1292 softc->quirks |= SA_QUIRK_2FM; 1293 break; 1294 default: 1295 error = EINVAL; 1296 break; 1297 } 1298 break; 1299 default: 1300 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1301 break; 1302 } 1303 1304 /* 1305 * Check to see if we cleared a frozen state 1306 */ 1307 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1308 switch(cmd) { 1309 case MTIOCRDSPOS: 1310 case MTIOCRDHPOS: 1311 case MTIOCSLOCATE: 1312 case MTIOCHLOCATE: 1313 softc->fileno = (daddr_t) -1; 1314 softc->blkno = (daddr_t) -1; 1315 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1316 xpt_print(periph->path, 1317 "tape state now unfrozen.\n"); 1318 break; 1319 default: 1320 break; 1321 } 1322 } 1323 if (didlockperiph) { 1324 cam_periph_unhold(periph); 1325 } 1326 cam_periph_unlock(periph); 1327 return (error); 1328 } 1329 1330 static void 1331 sainit(void) 1332 { 1333 cam_status status; 1334 1335 /* 1336 * Install a global async callback. 1337 */ 1338 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1339 1340 if (status != CAM_REQ_CMP) { 1341 printf("sa: Failed to attach master async callback " 1342 "due to status 0x%x!\n", status); 1343 } 1344 } 1345 1346 static void 1347 saoninvalidate(struct cam_periph *periph) 1348 { 1349 struct sa_softc *softc; 1350 1351 softc = (struct sa_softc *)periph->softc; 1352 1353 /* 1354 * De-register any async callbacks. 1355 */ 1356 xpt_register_async(0, saasync, periph, periph->path); 1357 1358 softc->flags |= SA_FLAG_INVALID; 1359 1360 /* 1361 * Return all queued I/O with ENXIO. 1362 * XXX Handle any transactions queued to the card 1363 * with XPT_ABORT_CCB. 1364 */ 1365 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1366 softc->queue_count = 0; 1367 1368 xpt_print(periph->path, "lost device\n"); 1369 1370 } 1371 1372 static void 1373 sacleanup(struct cam_periph *periph) 1374 { 1375 struct sa_softc *softc; 1376 int i; 1377 1378 softc = (struct sa_softc *)periph->softc; 1379 1380 xpt_print(periph->path, "removing device entry\n"); 1381 devstat_remove_entry(softc->device_stats); 1382 cam_periph_unlock(periph); 1383 destroy_dev(softc->devs.ctl_dev); 1384 for (i = 0; i < SA_NUM_MODES; i++) { 1385 destroy_dev(softc->devs.mode_devs[i].r_dev); 1386 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1387 destroy_dev(softc->devs.mode_devs[i].er_dev); 1388 } 1389 cam_periph_lock(periph); 1390 free(softc, M_SCSISA); 1391 } 1392 1393 static void 1394 saasync(void *callback_arg, u_int32_t code, 1395 struct cam_path *path, void *arg) 1396 { 1397 struct cam_periph *periph; 1398 1399 periph = (struct cam_periph *)callback_arg; 1400 switch (code) { 1401 case AC_FOUND_DEVICE: 1402 { 1403 struct ccb_getdev *cgd; 1404 cam_status status; 1405 1406 cgd = (struct ccb_getdev *)arg; 1407 if (cgd == NULL) 1408 break; 1409 1410 if (cgd->protocol != PROTO_SCSI) 1411 break; 1412 1413 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1414 break; 1415 1416 /* 1417 * Allocate a peripheral instance for 1418 * this device and start the probe 1419 * process. 1420 */ 1421 status = cam_periph_alloc(saregister, saoninvalidate, 1422 sacleanup, sastart, 1423 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1424 saasync, AC_FOUND_DEVICE, cgd); 1425 1426 if (status != CAM_REQ_CMP 1427 && status != CAM_REQ_INPROG) 1428 printf("saasync: Unable to probe new device " 1429 "due to status 0x%x\n", status); 1430 break; 1431 } 1432 default: 1433 cam_periph_async(periph, code, path, arg); 1434 break; 1435 } 1436 } 1437 1438 static cam_status 1439 saregister(struct cam_periph *periph, void *arg) 1440 { 1441 struct sa_softc *softc; 1442 struct ccb_getdev *cgd; 1443 struct ccb_pathinq cpi; 1444 caddr_t match; 1445 int i; 1446 1447 cgd = (struct ccb_getdev *)arg; 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 } else 1481 softc->quirks = SA_QUIRK_NONE; 1482 1483 bzero(&cpi, sizeof(cpi)); 1484 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1485 cpi.ccb_h.func_code = XPT_PATH_INQ; 1486 xpt_action((union ccb *)&cpi); 1487 1488 /* 1489 * The SA driver supports a blocksize, but we don't know the 1490 * blocksize until we media is inserted. So, set a flag to 1491 * indicate that the blocksize is unavailable right now. 1492 */ 1493 cam_periph_unlock(periph); 1494 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1495 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1496 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1497 1498 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1499 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1500 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1501 softc->devs.ctl_dev->si_drv1 = periph; 1502 1503 for (i = 0; i < SA_NUM_MODES; i++) { 1504 1505 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1506 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1507 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1508 periph->periph_name, periph->unit_number, i); 1509 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1510 1511 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1512 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1513 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1514 periph->periph_name, periph->unit_number, i); 1515 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1516 1517 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1518 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1519 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1520 periph->periph_name, periph->unit_number, i); 1521 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1522 1523 /* 1524 * Make the (well known) aliases for the first mode. 1525 */ 1526 if (i == 0) { 1527 struct cdev *alias; 1528 1529 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1530 "%s%d", periph->periph_name, periph->unit_number); 1531 alias->si_drv1 = periph; 1532 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1533 "n%s%d", periph->periph_name, periph->unit_number); 1534 alias->si_drv1 = periph; 1535 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1536 "e%s%d", periph->periph_name, periph->unit_number); 1537 alias->si_drv1 = periph; 1538 } 1539 } 1540 cam_periph_lock(periph); 1541 1542 /* 1543 * Add an async callback so that we get 1544 * notified if this device goes away. 1545 */ 1546 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1547 1548 xpt_announce_periph(periph, NULL); 1549 1550 return (CAM_REQ_CMP); 1551 } 1552 1553 static void 1554 sastart(struct cam_periph *periph, union ccb *start_ccb) 1555 { 1556 struct sa_softc *softc; 1557 1558 softc = (struct sa_softc *)periph->softc; 1559 1560 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1561 1562 1563 switch (softc->state) { 1564 case SA_STATE_NORMAL: 1565 { 1566 /* Pull a buffer from the queue and get going on it */ 1567 struct bio *bp; 1568 1569 /* 1570 * See if there is a buf with work for us to do.. 1571 */ 1572 bp = bioq_first(&softc->bio_queue); 1573 if (periph->immediate_priority <= periph->pinfo.priority) { 1574 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1575 ("queuing for immediate ccb\n")); 1576 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1577 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1578 periph_links.sle); 1579 periph->immediate_priority = CAM_PRIORITY_NONE; 1580 wakeup(&periph->ccb_list); 1581 } else if (bp == NULL) { 1582 xpt_release_ccb(start_ccb); 1583 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1584 struct bio *done_bp; 1585 again: 1586 softc->queue_count--; 1587 bioq_remove(&softc->bio_queue, bp); 1588 bp->bio_resid = bp->bio_bcount; 1589 done_bp = bp; 1590 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1591 /* 1592 * We now just clear errors in this case 1593 * and let the residual be the notifier. 1594 */ 1595 bp->bio_error = 0; 1596 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1597 /* 1598 * This can only happen if we're reading 1599 * in fixed length mode. In this case, 1600 * we dump the rest of the list the 1601 * same way. 1602 */ 1603 bp->bio_error = 0; 1604 if (bioq_first(&softc->bio_queue) != NULL) { 1605 biodone(done_bp); 1606 goto again; 1607 } 1608 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1609 bp->bio_error = EIO; 1610 bp->bio_flags |= BIO_ERROR; 1611 } 1612 bp = bioq_first(&softc->bio_queue); 1613 /* 1614 * Only if we have no other buffers queued up 1615 * do we clear the pending error flag. 1616 */ 1617 if (bp == NULL) 1618 softc->flags &= ~SA_FLAG_ERR_PENDING; 1619 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1620 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1621 "%d more buffers queued up\n", 1622 (softc->flags & SA_FLAG_ERR_PENDING), 1623 (bp != NULL)? "not " : " ", softc->queue_count)); 1624 xpt_release_ccb(start_ccb); 1625 biodone(done_bp); 1626 } else { 1627 u_int32_t length; 1628 1629 bioq_remove(&softc->bio_queue, bp); 1630 softc->queue_count--; 1631 1632 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1633 if (softc->blk_shift != 0) { 1634 length = 1635 bp->bio_bcount >> softc->blk_shift; 1636 } else if (softc->media_blksize != 0) { 1637 length = bp->bio_bcount / 1638 softc->media_blksize; 1639 } else { 1640 bp->bio_error = EIO; 1641 xpt_print(periph->path, "zero blocksize" 1642 " for FIXED length writes?\n"); 1643 biodone(bp); 1644 break; 1645 } 1646 #if 0 1647 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1648 ("issuing a %d fixed record %s\n", 1649 length, (bp->bio_cmd == BIO_READ)? "read" : 1650 "write")); 1651 #endif 1652 } else { 1653 length = bp->bio_bcount; 1654 #if 0 1655 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1656 ("issuing a %d variable byte %s\n", 1657 length, (bp->bio_cmd == BIO_READ)? "read" : 1658 "write")); 1659 #endif 1660 } 1661 devstat_start_transaction_bio(softc->device_stats, bp); 1662 /* 1663 * Some people have theorized that we should 1664 * suppress illegal length indication if we are 1665 * running in variable block mode so that we don't 1666 * have to request sense every time our requested 1667 * block size is larger than the written block. 1668 * The residual information from the ccb allows 1669 * us to identify this situation anyway. The only 1670 * problem with this is that we will not get 1671 * information about blocks that are larger than 1672 * our read buffer unless we set the block size 1673 * in the mode page to something other than 0. 1674 * 1675 * I believe that this is a non-issue. If user apps 1676 * don't adjust their read size to match our record 1677 * size, that's just life. Anyway, the typical usage 1678 * would be to issue, e.g., 64KB reads and occasionally 1679 * have to do deal with 512 byte or 1KB intermediate 1680 * records. 1681 */ 1682 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1683 MTIO_DSREG_RD : MTIO_DSREG_WR; 1684 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1685 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1686 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1687 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1688 IO_TIMEOUT); 1689 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1690 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1691 start_ccb->ccb_h.ccb_bp = bp; 1692 bp = bioq_first(&softc->bio_queue); 1693 xpt_action(start_ccb); 1694 } 1695 1696 if (bp != NULL) { 1697 /* Have more work to do, so ensure we stay scheduled */ 1698 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1699 } 1700 break; 1701 } 1702 case SA_STATE_ABNORMAL: 1703 default: 1704 panic("state 0x%x in sastart", softc->state); 1705 break; 1706 } 1707 } 1708 1709 1710 static void 1711 sadone(struct cam_periph *periph, union ccb *done_ccb) 1712 { 1713 struct sa_softc *softc; 1714 struct ccb_scsiio *csio; 1715 1716 softc = (struct sa_softc *)periph->softc; 1717 csio = &done_ccb->csio; 1718 switch (CCB_Type(csio)) { 1719 case SA_CCB_BUFFER_IO: 1720 { 1721 struct bio *bp; 1722 int error; 1723 1724 softc->dsreg = MTIO_DSREG_REST; 1725 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1726 error = 0; 1727 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1728 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1729 /* 1730 * A retry was scheduled, so just return. 1731 */ 1732 return; 1733 } 1734 } 1735 1736 if (error == EIO) { 1737 1738 /* 1739 * Catastrophic error. Mark the tape as frozen 1740 * (we no longer know tape position). 1741 * 1742 * Return all queued I/O with EIO, and unfreeze 1743 * our queue so that future transactions that 1744 * attempt to fix this problem can get to the 1745 * device. 1746 * 1747 */ 1748 1749 softc->flags |= SA_FLAG_TAPE_FROZEN; 1750 bioq_flush(&softc->bio_queue, NULL, EIO); 1751 } 1752 if (error != 0) { 1753 bp->bio_resid = bp->bio_bcount; 1754 bp->bio_error = error; 1755 bp->bio_flags |= BIO_ERROR; 1756 /* 1757 * In the error case, position is updated in saerror. 1758 */ 1759 } else { 1760 bp->bio_resid = csio->resid; 1761 bp->bio_error = 0; 1762 if (csio->resid != 0) { 1763 bp->bio_flags |= BIO_ERROR; 1764 } 1765 if (bp->bio_cmd == BIO_WRITE) { 1766 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1767 softc->filemarks = 0; 1768 } 1769 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1770 (softc->blkno != (daddr_t) -1)) { 1771 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1772 u_int32_t l; 1773 if (softc->blk_shift != 0) { 1774 l = bp->bio_bcount >> 1775 softc->blk_shift; 1776 } else { 1777 l = bp->bio_bcount / 1778 softc->media_blksize; 1779 } 1780 softc->blkno += (daddr_t) l; 1781 } else { 1782 softc->blkno++; 1783 } 1784 } 1785 } 1786 /* 1787 * If we had an error (immediate or pending), 1788 * release the device queue now. 1789 */ 1790 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1791 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1792 if (error || bp->bio_resid) { 1793 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1794 ("error %d resid %ld count %ld\n", error, 1795 bp->bio_resid, bp->bio_bcount)); 1796 } 1797 biofinish(bp, softc->device_stats, 0); 1798 break; 1799 } 1800 case SA_CCB_WAITING: 1801 { 1802 /* Caller will release the CCB */ 1803 wakeup(&done_ccb->ccb_h.cbfcnp); 1804 return; 1805 } 1806 } 1807 xpt_release_ccb(done_ccb); 1808 } 1809 1810 /* 1811 * Mount the tape (make sure it's ready for I/O). 1812 */ 1813 static int 1814 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1815 { 1816 struct sa_softc *softc; 1817 union ccb *ccb; 1818 int error; 1819 1820 /* 1821 * oflags can be checked for 'kind' of open (read-only check) - later 1822 * dev can be checked for a control-mode or compression open - later 1823 */ 1824 UNUSED_PARAMETER(oflags); 1825 UNUSED_PARAMETER(dev); 1826 1827 1828 softc = (struct sa_softc *)periph->softc; 1829 1830 /* 1831 * This should determine if something has happend since the last 1832 * open/mount that would invalidate the mount. We do *not* want 1833 * to retry this command- we just want the status. But we only 1834 * do this if we're mounted already- if we're not mounted, 1835 * we don't care about the unit read state and can instead use 1836 * this opportunity to attempt to reserve the tape unit. 1837 */ 1838 1839 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1840 ccb = cam_periph_getccb(periph, 1); 1841 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1842 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1843 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1844 softc->device_stats); 1845 if (error == ENXIO) { 1846 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 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 } else if (error) { 1852 /* 1853 * We don't need to freeze the tape because we 1854 * will now attempt to rewind/load it. 1855 */ 1856 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1857 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1858 xpt_print(periph->path, 1859 "error %d on TUR in samount\n", error); 1860 } 1861 } 1862 } else { 1863 error = sareservereleaseunit(periph, TRUE); 1864 if (error) { 1865 return (error); 1866 } 1867 ccb = cam_periph_getccb(periph, 1); 1868 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1869 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1870 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1871 softc->device_stats); 1872 } 1873 1874 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1875 struct scsi_read_block_limits_data *rblim = NULL; 1876 int comp_enabled, comp_supported; 1877 u_int8_t write_protect, guessing = 0; 1878 1879 /* 1880 * Clear out old state. 1881 */ 1882 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1883 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1884 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1885 softc->filemarks = 0; 1886 1887 /* 1888 * *Very* first off, make sure we're loaded to BOT. 1889 */ 1890 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1891 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1892 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1893 softc->device_stats); 1894 1895 /* 1896 * In case this doesn't work, do a REWIND instead 1897 */ 1898 if (error) { 1899 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1900 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1901 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1902 softc->device_stats); 1903 } 1904 if (error) { 1905 xpt_release_ccb(ccb); 1906 goto exit; 1907 } 1908 1909 /* 1910 * Do a dummy test read to force access to the 1911 * media so that the drive will really know what's 1912 * there. We actually don't really care what the 1913 * blocksize on tape is and don't expect to really 1914 * read a full record. 1915 */ 1916 rblim = (struct scsi_read_block_limits_data *) 1917 malloc(8192, M_SCSISA, M_NOWAIT); 1918 if (rblim == NULL) { 1919 xpt_print(periph->path, "no memory for test read\n"); 1920 xpt_release_ccb(ccb); 1921 error = ENOMEM; 1922 goto exit; 1923 } 1924 1925 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1926 scsi_sa_read_write(&ccb->csio, 0, sadone, 1927 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1928 (void *) rblim, 8192, SSD_FULL_SIZE, 1929 IO_TIMEOUT); 1930 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1931 softc->device_stats); 1932 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1933 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1934 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1935 SF_NO_PRINT | SF_RETRY_UA, 1936 softc->device_stats); 1937 if (error) { 1938 xpt_print(periph->path, 1939 "unable to rewind after test read\n"); 1940 xpt_release_ccb(ccb); 1941 goto exit; 1942 } 1943 } 1944 1945 /* 1946 * Next off, determine block limits. 1947 */ 1948 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1949 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1950 1951 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1952 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 1953 1954 xpt_release_ccb(ccb); 1955 1956 if (error != 0) { 1957 /* 1958 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1959 * a MANDATORY command. Anyway- it doesn't matter- 1960 * we can proceed anyway. 1961 */ 1962 softc->blk_gran = 0; 1963 softc->max_blk = ~0; 1964 softc->min_blk = 0; 1965 } else { 1966 if (softc->scsi_rev >= SCSI_REV_SPC) { 1967 softc->blk_gran = RBL_GRAN(rblim); 1968 } else { 1969 softc->blk_gran = 0; 1970 } 1971 /* 1972 * We take max_blk == min_blk to mean a default to 1973 * fixed mode- but note that whatever we get out of 1974 * sagetparams below will actually determine whether 1975 * we are actually *in* fixed mode. 1976 */ 1977 softc->max_blk = scsi_3btoul(rblim->maximum); 1978 softc->min_blk = scsi_2btoul(rblim->minimum); 1979 1980 1981 } 1982 /* 1983 * Next, perform a mode sense to determine 1984 * current density, blocksize, compression etc. 1985 */ 1986 error = sagetparams(periph, SA_PARAM_ALL, 1987 &softc->media_blksize, 1988 &softc->media_density, 1989 &softc->media_numblks, 1990 &softc->buffer_mode, &write_protect, 1991 &softc->speed, &comp_supported, 1992 &comp_enabled, &softc->comp_algorithm, 1993 NULL); 1994 1995 if (error != 0) { 1996 /* 1997 * We could work a little harder here. We could 1998 * adjust our attempts to get information. It 1999 * might be an ancient tape drive. If someone 2000 * nudges us, we'll do that. 2001 */ 2002 goto exit; 2003 } 2004 2005 /* 2006 * If no quirk has determined that this is a device that is 2007 * preferred to be in fixed or variable mode, now is the time 2008 * to find out. 2009 */ 2010 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2011 guessing = 1; 2012 /* 2013 * This could be expensive to find out. Luckily we 2014 * only need to do this once. If we start out in 2015 * 'default' mode, try and set ourselves to one 2016 * of the densities that would determine a wad 2017 * of other stuff. Go from highest to lowest. 2018 */ 2019 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2020 int i; 2021 static u_int8_t ctry[] = { 2022 SCSI_DENSITY_HALFINCH_PE, 2023 SCSI_DENSITY_HALFINCH_6250C, 2024 SCSI_DENSITY_HALFINCH_6250, 2025 SCSI_DENSITY_HALFINCH_1600, 2026 SCSI_DENSITY_HALFINCH_800, 2027 SCSI_DENSITY_QIC_4GB, 2028 SCSI_DENSITY_QIC_2GB, 2029 SCSI_DENSITY_QIC_525_320, 2030 SCSI_DENSITY_QIC_150, 2031 SCSI_DENSITY_QIC_120, 2032 SCSI_DENSITY_QIC_24, 2033 SCSI_DENSITY_QIC_11_9TRK, 2034 SCSI_DENSITY_QIC_11_4TRK, 2035 SCSI_DENSITY_QIC_1320, 2036 SCSI_DENSITY_QIC_3080, 2037 0 2038 }; 2039 for (i = 0; ctry[i]; i++) { 2040 error = sasetparams(periph, 2041 SA_PARAM_DENSITY, 0, ctry[i], 2042 0, SF_NO_PRINT); 2043 if (error == 0) { 2044 softc->media_density = ctry[i]; 2045 break; 2046 } 2047 } 2048 } 2049 switch (softc->media_density) { 2050 case SCSI_DENSITY_QIC_11_4TRK: 2051 case SCSI_DENSITY_QIC_11_9TRK: 2052 case SCSI_DENSITY_QIC_24: 2053 case SCSI_DENSITY_QIC_120: 2054 case SCSI_DENSITY_QIC_150: 2055 case SCSI_DENSITY_QIC_525_320: 2056 case SCSI_DENSITY_QIC_1320: 2057 case SCSI_DENSITY_QIC_3080: 2058 softc->quirks &= ~SA_QUIRK_2FM; 2059 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2060 softc->last_media_blksize = 512; 2061 break; 2062 case SCSI_DENSITY_QIC_4GB: 2063 case SCSI_DENSITY_QIC_2GB: 2064 softc->quirks &= ~SA_QUIRK_2FM; 2065 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2066 softc->last_media_blksize = 1024; 2067 break; 2068 default: 2069 softc->last_media_blksize = 2070 softc->media_blksize; 2071 softc->quirks |= SA_QUIRK_VARIABLE; 2072 break; 2073 } 2074 } 2075 2076 /* 2077 * If no quirk has determined that this is a device that needs 2078 * to have 2 Filemarks at EOD, now is the time to find out. 2079 */ 2080 2081 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2082 switch (softc->media_density) { 2083 case SCSI_DENSITY_HALFINCH_800: 2084 case SCSI_DENSITY_HALFINCH_1600: 2085 case SCSI_DENSITY_HALFINCH_6250: 2086 case SCSI_DENSITY_HALFINCH_6250C: 2087 case SCSI_DENSITY_HALFINCH_PE: 2088 softc->quirks &= ~SA_QUIRK_1FM; 2089 softc->quirks |= SA_QUIRK_2FM; 2090 break; 2091 default: 2092 break; 2093 } 2094 } 2095 2096 /* 2097 * Now validate that some info we got makes sense. 2098 */ 2099 if ((softc->max_blk < softc->media_blksize) || 2100 (softc->min_blk > softc->media_blksize && 2101 softc->media_blksize)) { 2102 xpt_print(periph->path, 2103 "BLOCK LIMITS (%d..%d) could not match current " 2104 "block settings (%d)- adjusting\n", softc->min_blk, 2105 softc->max_blk, softc->media_blksize); 2106 softc->max_blk = softc->min_blk = 2107 softc->media_blksize; 2108 } 2109 2110 /* 2111 * Now put ourselves into the right frame of mind based 2112 * upon quirks... 2113 */ 2114 tryagain: 2115 /* 2116 * If we want to be in FIXED mode and our current blocksize 2117 * is not equal to our last blocksize (if nonzero), try and 2118 * set ourselves to this last blocksize (as the 'preferred' 2119 * block size). The initial quirkmatch at registry sets the 2120 * initial 'last' blocksize. If, for whatever reason, this 2121 * 'last' blocksize is zero, set the blocksize to 512, 2122 * or min_blk if that's larger. 2123 */ 2124 if ((softc->quirks & SA_QUIRK_FIXED) && 2125 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2126 (softc->media_blksize != softc->last_media_blksize)) { 2127 softc->media_blksize = softc->last_media_blksize; 2128 if (softc->media_blksize == 0) { 2129 softc->media_blksize = 512; 2130 if (softc->media_blksize < softc->min_blk) { 2131 softc->media_blksize = softc->min_blk; 2132 } 2133 } 2134 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2135 softc->media_blksize, 0, 0, SF_NO_PRINT); 2136 if (error) { 2137 xpt_print(periph->path, 2138 "unable to set fixed blocksize to %d\n", 2139 softc->media_blksize); 2140 goto exit; 2141 } 2142 } 2143 2144 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2145 (softc->media_blksize != 0)) { 2146 softc->last_media_blksize = softc->media_blksize; 2147 softc->media_blksize = 0; 2148 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2149 0, 0, 0, SF_NO_PRINT); 2150 if (error) { 2151 /* 2152 * If this fails and we were guessing, just 2153 * assume that we got it wrong and go try 2154 * fixed block mode. Don't even check against 2155 * density code at this point. 2156 */ 2157 if (guessing) { 2158 softc->quirks &= ~SA_QUIRK_VARIABLE; 2159 softc->quirks |= SA_QUIRK_FIXED; 2160 if (softc->last_media_blksize == 0) 2161 softc->last_media_blksize = 512; 2162 goto tryagain; 2163 } 2164 xpt_print(periph->path, 2165 "unable to set variable blocksize\n"); 2166 goto exit; 2167 } 2168 } 2169 2170 /* 2171 * Now that we have the current block size, 2172 * set up some parameters for sastart's usage. 2173 */ 2174 if (softc->media_blksize) { 2175 softc->flags |= SA_FLAG_FIXED; 2176 if (powerof2(softc->media_blksize)) { 2177 softc->blk_shift = 2178 ffs(softc->media_blksize) - 1; 2179 softc->blk_mask = softc->media_blksize - 1; 2180 } else { 2181 softc->blk_mask = ~0; 2182 softc->blk_shift = 0; 2183 } 2184 } else { 2185 /* 2186 * The SCSI-3 spec allows 0 to mean "unspecified". 2187 * The SCSI-1 spec allows 0 to mean 'infinite'. 2188 * 2189 * Either works here. 2190 */ 2191 if (softc->max_blk == 0) { 2192 softc->max_blk = ~0; 2193 } 2194 softc->blk_shift = 0; 2195 if (softc->blk_gran != 0) { 2196 softc->blk_mask = softc->blk_gran - 1; 2197 } else { 2198 softc->blk_mask = 0; 2199 } 2200 } 2201 2202 if (write_protect) 2203 softc->flags |= SA_FLAG_TAPE_WP; 2204 2205 if (comp_supported) { 2206 if (softc->saved_comp_algorithm == 0) 2207 softc->saved_comp_algorithm = 2208 softc->comp_algorithm; 2209 softc->flags |= SA_FLAG_COMP_SUPP; 2210 if (comp_enabled) 2211 softc->flags |= SA_FLAG_COMP_ENABLED; 2212 } else 2213 softc->flags |= SA_FLAG_COMP_UNSUPP; 2214 2215 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2216 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2217 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2218 0, 0, SF_NO_PRINT); 2219 if (error == 0) { 2220 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2221 } else { 2222 xpt_print(periph->path, 2223 "unable to set buffered mode\n"); 2224 } 2225 error = 0; /* not an error */ 2226 } 2227 2228 2229 if (error == 0) { 2230 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2231 } 2232 exit: 2233 if (rblim != NULL) 2234 free(rblim, M_SCSISA); 2235 2236 if (error != 0) { 2237 softc->dsreg = MTIO_DSREG_NIL; 2238 } else { 2239 softc->fileno = softc->blkno = 0; 2240 softc->dsreg = MTIO_DSREG_REST; 2241 } 2242 #ifdef SA_1FM_AT_EOD 2243 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2244 softc->quirks |= SA_QUIRK_1FM; 2245 #else 2246 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2247 softc->quirks |= SA_QUIRK_2FM; 2248 #endif 2249 } else 2250 xpt_release_ccb(ccb); 2251 2252 /* 2253 * If we return an error, we're not mounted any more, 2254 * so release any device reservation. 2255 */ 2256 if (error != 0) { 2257 (void) sareservereleaseunit(periph, FALSE); 2258 } else { 2259 /* 2260 * Clear I/O residual. 2261 */ 2262 softc->last_io_resid = 0; 2263 softc->last_ctl_resid = 0; 2264 } 2265 return (error); 2266 } 2267 2268 /* 2269 * How many filemarks do we need to write if we were to terminate the 2270 * tape session right now? Note that this can be a negative number 2271 */ 2272 2273 static int 2274 samarkswanted(struct cam_periph *periph) 2275 { 2276 int markswanted; 2277 struct sa_softc *softc; 2278 2279 softc = (struct sa_softc *)periph->softc; 2280 markswanted = 0; 2281 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2282 markswanted++; 2283 if (softc->quirks & SA_QUIRK_2FM) 2284 markswanted++; 2285 } 2286 markswanted -= softc->filemarks; 2287 return (markswanted); 2288 } 2289 2290 static int 2291 sacheckeod(struct cam_periph *periph) 2292 { 2293 int error; 2294 int markswanted; 2295 2296 markswanted = samarkswanted(periph); 2297 2298 if (markswanted > 0) { 2299 error = sawritefilemarks(periph, markswanted, FALSE); 2300 } else { 2301 error = 0; 2302 } 2303 return (error); 2304 } 2305 2306 static int 2307 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2308 { 2309 static const char *toobig = 2310 "%d-byte tape record bigger than supplied buffer\n"; 2311 struct cam_periph *periph; 2312 struct sa_softc *softc; 2313 struct ccb_scsiio *csio; 2314 struct scsi_sense_data *sense; 2315 uint64_t resid = 0; 2316 int64_t info = 0; 2317 cam_status status; 2318 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 2319 int sense_len; 2320 uint8_t stream_bits; 2321 2322 periph = xpt_path_periph(ccb->ccb_h.path); 2323 softc = (struct sa_softc *)periph->softc; 2324 csio = &ccb->csio; 2325 sense = &csio->sense_data; 2326 sense_len = csio->sense_len - csio->sense_resid; 2327 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 2328 &asc, &ascq, /*show_errors*/ 1); 2329 if (asc != -1 && ascq != -1) 2330 aqvalid = 1; 2331 else 2332 aqvalid = 0; 2333 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 2334 stream_valid = 1; 2335 else 2336 stream_valid = 0; 2337 error = 0; 2338 2339 status = csio->ccb_h.status & CAM_STATUS_MASK; 2340 2341 /* 2342 * Calculate/latch up, any residuals... We do this in a funny 2-step 2343 * so we can print stuff here if we have CAM_DEBUG enabled for this 2344 * unit. 2345 */ 2346 if (status == CAM_SCSI_STATUS_ERROR) { 2347 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 2348 &info) == 0) { 2349 if ((softc->flags & SA_FLAG_FIXED) != 0) 2350 resid *= softc->media_blksize; 2351 } else { 2352 resid = csio->dxfer_len; 2353 info = resid; 2354 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2355 if (softc->media_blksize) 2356 info /= softc->media_blksize; 2357 } 2358 } 2359 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2360 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2361 sizeof (struct scsi_sense_data)); 2362 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2363 (int) csio->cdb_len); 2364 softc->last_io_resid = resid; 2365 softc->last_resid_was_io = 1; 2366 } else { 2367 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2368 sizeof (struct scsi_sense_data)); 2369 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2370 (int) csio->cdb_len); 2371 softc->last_ctl_resid = resid; 2372 softc->last_resid_was_io = 0; 2373 } 2374 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2375 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 2376 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2377 sense_key, asc, ascq, status, 2378 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 2379 csio->dxfer_len)); 2380 } else { 2381 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2382 ("Cam Status 0x%x\n", status)); 2383 } 2384 2385 switch (status) { 2386 case CAM_REQ_CMP: 2387 return (0); 2388 case CAM_SCSI_STATUS_ERROR: 2389 /* 2390 * If a read/write command, we handle it here. 2391 */ 2392 if (CCB_Type(csio) != SA_CCB_WAITING) { 2393 break; 2394 } 2395 /* 2396 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2397 * on a non read/write command, we assume it's not an error 2398 * and propagate the residule and return. 2399 */ 2400 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2401 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2402 csio->resid = resid; 2403 QFRLS(ccb); 2404 return (0); 2405 } 2406 /* 2407 * Otherwise, we let the common code handle this. 2408 */ 2409 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2410 2411 /* 2412 * XXX: To Be Fixed 2413 * We cannot depend upon CAM honoring retry counts for these. 2414 */ 2415 case CAM_SCSI_BUS_RESET: 2416 case CAM_BDR_SENT: 2417 if (ccb->ccb_h.retry_count <= 0) { 2418 return (EIO); 2419 } 2420 /* FALLTHROUGH */ 2421 default: 2422 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2423 } 2424 2425 /* 2426 * Handle filemark, end of tape, mismatched record sizes.... 2427 * From this point out, we're only handling read/write cases. 2428 * Handle writes && reads differently. 2429 */ 2430 2431 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2432 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2433 csio->resid = resid; 2434 error = ENOSPC; 2435 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 2436 softc->flags |= SA_FLAG_EOM_PENDING; 2437 /* 2438 * Grotesque as it seems, the few times 2439 * I've actually seen a non-zero resid, 2440 * the tape drive actually lied and had 2441 * written all the data!. 2442 */ 2443 csio->resid = 0; 2444 } 2445 } else { 2446 csio->resid = resid; 2447 if (sense_key == SSD_KEY_BLANK_CHECK) { 2448 if (softc->quirks & SA_QUIRK_1FM) { 2449 error = 0; 2450 softc->flags |= SA_FLAG_EOM_PENDING; 2451 } else { 2452 error = EIO; 2453 } 2454 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 2455 if (softc->flags & SA_FLAG_FIXED) { 2456 error = -1; 2457 softc->flags |= SA_FLAG_EOF_PENDING; 2458 } 2459 /* 2460 * Unconditionally, if we detected a filemark on a read, 2461 * mark that we've run moved a file ahead. 2462 */ 2463 if (softc->fileno != (daddr_t) -1) { 2464 softc->fileno++; 2465 softc->blkno = 0; 2466 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2467 } 2468 } 2469 } 2470 2471 /* 2472 * Incorrect Length usually applies to read, but can apply to writes. 2473 */ 2474 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 2475 if (info < 0) { 2476 xpt_print(csio->ccb_h.path, toobig, 2477 csio->dxfer_len - info); 2478 csio->resid = csio->dxfer_len; 2479 error = EIO; 2480 } else { 2481 csio->resid = resid; 2482 if (softc->flags & SA_FLAG_FIXED) { 2483 softc->flags |= SA_FLAG_EIO_PENDING; 2484 } 2485 /* 2486 * Bump the block number if we hadn't seen a filemark. 2487 * Do this independent of errors (we've moved anyway). 2488 */ 2489 if ((stream_valid == 0) || 2490 (stream_bits & SSD_FILEMARK) == 0) { 2491 if (softc->blkno != (daddr_t) -1) { 2492 softc->blkno++; 2493 csio->ccb_h.ccb_pflags |= 2494 SA_POSITION_UPDATED; 2495 } 2496 } 2497 } 2498 } 2499 2500 if (error <= 0) { 2501 /* 2502 * Unfreeze the queue if frozen as we're not returning anything 2503 * to our waiters that would indicate an I/O error has occurred 2504 * (yet). 2505 */ 2506 QFRLS(ccb); 2507 error = 0; 2508 } 2509 return (error); 2510 } 2511 2512 static int 2513 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2514 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2515 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2516 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2517 sa_comp_t *tcs) 2518 { 2519 union ccb *ccb; 2520 void *mode_buffer; 2521 struct scsi_mode_header_6 *mode_hdr; 2522 struct scsi_mode_blk_desc *mode_blk; 2523 int mode_buffer_len; 2524 struct sa_softc *softc; 2525 u_int8_t cpage; 2526 int error; 2527 cam_status status; 2528 2529 softc = (struct sa_softc *)periph->softc; 2530 ccb = cam_periph_getccb(periph, 1); 2531 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2532 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2533 else 2534 cpage = SA_DATA_COMPRESSION_PAGE; 2535 2536 retry: 2537 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2538 2539 if (params_to_get & SA_PARAM_COMPRESSION) { 2540 if (softc->quirks & SA_QUIRK_NOCOMP) { 2541 *comp_supported = FALSE; 2542 params_to_get &= ~SA_PARAM_COMPRESSION; 2543 } else 2544 mode_buffer_len += sizeof (sa_comp_t); 2545 } 2546 2547 /* XXX Fix M_NOWAIT */ 2548 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2549 if (mode_buffer == NULL) { 2550 xpt_release_ccb(ccb); 2551 return (ENOMEM); 2552 } 2553 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2554 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2555 2556 /* it is safe to retry this */ 2557 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2558 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2559 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2560 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2561 2562 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2563 softc->device_stats); 2564 2565 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2566 2567 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2568 /* 2569 * Hmm. Let's see if we can try another page... 2570 * If we've already done that, give up on compression 2571 * for this device and remember this for the future 2572 * and attempt the request without asking for compression 2573 * info. 2574 */ 2575 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2576 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2577 goto retry; 2578 } 2579 softc->quirks |= SA_QUIRK_NOCOMP; 2580 free(mode_buffer, M_SCSISA); 2581 goto retry; 2582 } else if (status == CAM_SCSI_STATUS_ERROR) { 2583 /* Tell the user about the fatal error. */ 2584 scsi_sense_print(&ccb->csio); 2585 goto sagetparamsexit; 2586 } 2587 2588 /* 2589 * If the user only wants the compression information, and 2590 * the device doesn't send back the block descriptor, it's 2591 * no big deal. If the user wants more than just 2592 * compression, though, and the device doesn't pass back the 2593 * block descriptor, we need to send another mode sense to 2594 * get the block descriptor. 2595 */ 2596 if ((mode_hdr->blk_desc_len == 0) && 2597 (params_to_get & SA_PARAM_COMPRESSION) && 2598 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2599 2600 /* 2601 * Decrease the mode buffer length by the size of 2602 * the compression page, to make sure the data 2603 * there doesn't get overwritten. 2604 */ 2605 mode_buffer_len -= sizeof (sa_comp_t); 2606 2607 /* 2608 * Now move the compression page that we presumably 2609 * got back down the memory chunk a little bit so 2610 * it doesn't get spammed. 2611 */ 2612 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2613 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2614 2615 /* 2616 * Now, we issue another mode sense and just ask 2617 * for the block descriptor, etc. 2618 */ 2619 2620 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2621 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2622 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2623 SCSIOP_TIMEOUT); 2624 2625 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2626 softc->device_stats); 2627 2628 if (error != 0) 2629 goto sagetparamsexit; 2630 } 2631 2632 if (params_to_get & SA_PARAM_BLOCKSIZE) 2633 *blocksize = scsi_3btoul(mode_blk->blklen); 2634 2635 if (params_to_get & SA_PARAM_NUMBLOCKS) 2636 *numblocks = scsi_3btoul(mode_blk->nblocks); 2637 2638 if (params_to_get & SA_PARAM_BUFF_MODE) 2639 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2640 2641 if (params_to_get & SA_PARAM_DENSITY) 2642 *density = mode_blk->density; 2643 2644 if (params_to_get & SA_PARAM_WP) 2645 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2646 2647 if (params_to_get & SA_PARAM_SPEED) 2648 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2649 2650 if (params_to_get & SA_PARAM_COMPRESSION) { 2651 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2652 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2653 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2654 *comp_supported = 2655 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2656 *comp_enabled = 2657 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2658 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2659 } else { 2660 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2661 /* 2662 * We don't really know whether this device supports 2663 * Data Compression if the algorithm field is 2664 * zero. Just say we do. 2665 */ 2666 *comp_supported = TRUE; 2667 *comp_enabled = 2668 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2669 *comp_algorithm = cp->sel_comp_alg; 2670 } 2671 if (tcs != NULL) 2672 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2673 } 2674 2675 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2676 int idx; 2677 char *xyz = mode_buffer; 2678 xpt_print_path(periph->path); 2679 printf("Mode Sense Data="); 2680 for (idx = 0; idx < mode_buffer_len; idx++) 2681 printf(" 0x%02x", xyz[idx] & 0xff); 2682 printf("\n"); 2683 } 2684 2685 sagetparamsexit: 2686 2687 xpt_release_ccb(ccb); 2688 free(mode_buffer, M_SCSISA); 2689 return (error); 2690 } 2691 2692 /* 2693 * The purpose of this function is to set one of four different parameters 2694 * for a tape drive: 2695 * - blocksize 2696 * - density 2697 * - compression / compression algorithm 2698 * - buffering mode 2699 * 2700 * The assumption is that this will be called from saioctl(), and therefore 2701 * from a process context. Thus the waiting malloc calls below. If that 2702 * assumption ever changes, the malloc calls should be changed to be 2703 * NOWAIT mallocs. 2704 * 2705 * Any or all of the four parameters may be set when this function is 2706 * called. It should handle setting more than one parameter at once. 2707 */ 2708 static int 2709 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2710 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2711 u_int32_t sense_flags) 2712 { 2713 struct sa_softc *softc; 2714 u_int32_t current_blocksize; 2715 u_int32_t current_calg; 2716 u_int8_t current_density; 2717 u_int8_t current_speed; 2718 int comp_enabled, comp_supported; 2719 void *mode_buffer; 2720 int mode_buffer_len; 2721 struct scsi_mode_header_6 *mode_hdr; 2722 struct scsi_mode_blk_desc *mode_blk; 2723 sa_comp_t *ccomp, *cpage; 2724 int buff_mode; 2725 union ccb *ccb = NULL; 2726 int error; 2727 2728 softc = (struct sa_softc *)periph->softc; 2729 2730 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2731 if (ccomp == NULL) 2732 return (ENOMEM); 2733 2734 /* 2735 * Since it doesn't make sense to set the number of blocks, or 2736 * write protection, we won't try to get the current value. We 2737 * always want to get the blocksize, so we can set it back to the 2738 * proper value. 2739 */ 2740 error = sagetparams(periph, 2741 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2742 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2743 ¤t_speed, &comp_supported, &comp_enabled, 2744 ¤t_calg, ccomp); 2745 2746 if (error != 0) { 2747 free(ccomp, M_SCSISA); 2748 return (error); 2749 } 2750 2751 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2752 if (params_to_set & SA_PARAM_COMPRESSION) 2753 mode_buffer_len += sizeof (sa_comp_t); 2754 2755 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2756 if (mode_buffer == NULL) { 2757 free(ccomp, M_SCSISA); 2758 return (ENOMEM); 2759 } 2760 2761 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2762 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2763 2764 ccb = cam_periph_getccb(periph, 1); 2765 2766 retry: 2767 2768 if (params_to_set & SA_PARAM_COMPRESSION) { 2769 if (mode_blk) { 2770 cpage = (sa_comp_t *)&mode_blk[1]; 2771 } else { 2772 cpage = (sa_comp_t *)&mode_hdr[1]; 2773 } 2774 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2775 cpage->hdr.pagecode &= ~0x80; 2776 } else 2777 cpage = NULL; 2778 2779 /* 2780 * If the caller wants us to set the blocksize, use the one they 2781 * pass in. Otherwise, use the blocksize we got back from the 2782 * mode select above. 2783 */ 2784 if (mode_blk) { 2785 if (params_to_set & SA_PARAM_BLOCKSIZE) 2786 scsi_ulto3b(blocksize, mode_blk->blklen); 2787 else 2788 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2789 2790 /* 2791 * Set density if requested, else preserve old density. 2792 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2793 * devices, else density we've latched up in our softc. 2794 */ 2795 if (params_to_set & SA_PARAM_DENSITY) { 2796 mode_blk->density = density; 2797 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2798 mode_blk->density = SCSI_SAME_DENSITY; 2799 } else { 2800 mode_blk->density = softc->media_density; 2801 } 2802 } 2803 2804 /* 2805 * For mode selects, these two fields must be zero. 2806 */ 2807 mode_hdr->data_length = 0; 2808 mode_hdr->medium_type = 0; 2809 2810 /* set the speed to the current value */ 2811 mode_hdr->dev_spec = current_speed; 2812 2813 /* if set, set single-initiator buffering mode */ 2814 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2815 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2816 } 2817 2818 if (mode_blk) 2819 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2820 else 2821 mode_hdr->blk_desc_len = 0; 2822 2823 /* 2824 * First, if the user wants us to set the compression algorithm or 2825 * just turn compression on, check to make sure that this drive 2826 * supports compression. 2827 */ 2828 if (params_to_set & SA_PARAM_COMPRESSION) { 2829 /* 2830 * If the compression algorithm is 0, disable compression. 2831 * If the compression algorithm is non-zero, enable 2832 * compression and set the compression type to the 2833 * specified compression algorithm, unless the algorithm is 2834 * MT_COMP_ENABLE. In that case, we look at the 2835 * compression algorithm that is currently set and if it is 2836 * non-zero, we leave it as-is. If it is zero, and we have 2837 * saved a compression algorithm from a time when 2838 * compression was enabled before, set the compression to 2839 * the saved value. 2840 */ 2841 switch (ccomp->hdr.pagecode & ~0x80) { 2842 case SA_DEVICE_CONFIGURATION_PAGE: 2843 { 2844 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2845 if (calg == 0) { 2846 dcp->sel_comp_alg = SA_COMP_NONE; 2847 break; 2848 } 2849 if (calg != MT_COMP_ENABLE) { 2850 dcp->sel_comp_alg = calg; 2851 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2852 softc->saved_comp_algorithm != 0) { 2853 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2854 } 2855 break; 2856 } 2857 case SA_DATA_COMPRESSION_PAGE: 2858 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2859 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2860 if (calg == 0) { 2861 /* 2862 * Disable compression, but leave the 2863 * decompression and the capability bit 2864 * alone. 2865 */ 2866 dcp->dce_and_dcc = SA_DCP_DCC; 2867 dcp->dde_and_red |= SA_DCP_DDE; 2868 break; 2869 } 2870 /* enable compression && decompression */ 2871 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2872 dcp->dde_and_red |= SA_DCP_DDE; 2873 /* 2874 * If there, use compression algorithm from caller. 2875 * Otherwise, if there's a saved compression algorithm 2876 * and there is no current algorithm, use the saved 2877 * algorithm. Else parrot back what we got and hope 2878 * for the best. 2879 */ 2880 if (calg != MT_COMP_ENABLE) { 2881 scsi_ulto4b(calg, dcp->comp_algorithm); 2882 scsi_ulto4b(calg, dcp->decomp_algorithm); 2883 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2884 softc->saved_comp_algorithm != 0) { 2885 scsi_ulto4b(softc->saved_comp_algorithm, 2886 dcp->comp_algorithm); 2887 scsi_ulto4b(softc->saved_comp_algorithm, 2888 dcp->decomp_algorithm); 2889 } 2890 break; 2891 } 2892 /* 2893 * Compression does not appear to be supported- 2894 * at least via the DATA COMPRESSION page. It 2895 * would be too much to ask us to believe that 2896 * the page itself is supported, but incorrectly 2897 * reports an ability to manipulate data compression, 2898 * so we'll assume that this device doesn't support 2899 * compression. We can just fall through for that. 2900 */ 2901 /* FALLTHROUGH */ 2902 default: 2903 /* 2904 * The drive doesn't seem to support compression, 2905 * so turn off the set compression bit. 2906 */ 2907 params_to_set &= ~SA_PARAM_COMPRESSION; 2908 xpt_print(periph->path, 2909 "device does not seem to support compression\n"); 2910 2911 /* 2912 * If that was the only thing the user wanted us to set, 2913 * clean up allocated resources and return with 2914 * 'operation not supported'. 2915 */ 2916 if (params_to_set == SA_PARAM_NONE) { 2917 free(mode_buffer, M_SCSISA); 2918 xpt_release_ccb(ccb); 2919 return (ENODEV); 2920 } 2921 2922 /* 2923 * That wasn't the only thing the user wanted us to set. 2924 * So, decrease the stated mode buffer length by the 2925 * size of the compression mode page. 2926 */ 2927 mode_buffer_len -= sizeof(sa_comp_t); 2928 } 2929 } 2930 2931 /* It is safe to retry this operation */ 2932 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2933 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2934 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2935 2936 error = cam_periph_runccb(ccb, saerror, 0, 2937 sense_flags, softc->device_stats); 2938 2939 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2940 int idx; 2941 char *xyz = mode_buffer; 2942 xpt_print_path(periph->path); 2943 printf("Err%d, Mode Select Data=", error); 2944 for (idx = 0; idx < mode_buffer_len; idx++) 2945 printf(" 0x%02x", xyz[idx] & 0xff); 2946 printf("\n"); 2947 } 2948 2949 2950 if (error) { 2951 /* 2952 * If we can, try without setting density/blocksize. 2953 */ 2954 if (mode_blk) { 2955 if ((params_to_set & 2956 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2957 mode_blk = NULL; 2958 goto retry; 2959 } 2960 } else { 2961 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2962 cpage = (sa_comp_t *)&mode_blk[1]; 2963 } 2964 2965 /* 2966 * If we were setting the blocksize, and that failed, we 2967 * want to set it to its original value. If we weren't 2968 * setting the blocksize, we don't want to change it. 2969 */ 2970 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2971 2972 /* 2973 * Set density if requested, else preserve old density. 2974 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2975 * devices, else density we've latched up in our softc. 2976 */ 2977 if (params_to_set & SA_PARAM_DENSITY) { 2978 mode_blk->density = current_density; 2979 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2980 mode_blk->density = SCSI_SAME_DENSITY; 2981 } else { 2982 mode_blk->density = softc->media_density; 2983 } 2984 2985 if (params_to_set & SA_PARAM_COMPRESSION) 2986 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2987 2988 /* 2989 * The retry count is the only CCB field that might have been 2990 * changed that we care about, so reset it back to 1. 2991 */ 2992 ccb->ccb_h.retry_count = 1; 2993 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2994 softc->device_stats); 2995 } 2996 2997 xpt_release_ccb(ccb); 2998 2999 if (ccomp != NULL) 3000 free(ccomp, M_SCSISA); 3001 3002 if (params_to_set & SA_PARAM_COMPRESSION) { 3003 if (error) { 3004 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3005 /* 3006 * Even if we get an error setting compression, 3007 * do not say that we don't support it. We could 3008 * have been wrong, or it may be media specific. 3009 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3010 */ 3011 softc->saved_comp_algorithm = softc->comp_algorithm; 3012 softc->comp_algorithm = 0; 3013 } else { 3014 softc->flags |= SA_FLAG_COMP_ENABLED; 3015 softc->comp_algorithm = calg; 3016 } 3017 } 3018 3019 free(mode_buffer, M_SCSISA); 3020 return (error); 3021 } 3022 3023 static void 3024 saprevent(struct cam_periph *periph, int action) 3025 { 3026 struct sa_softc *softc; 3027 union ccb *ccb; 3028 int error, sf; 3029 3030 softc = (struct sa_softc *)periph->softc; 3031 3032 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3033 return; 3034 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3035 return; 3036 3037 /* 3038 * We can be quiet about illegal requests. 3039 */ 3040 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3041 sf = 0; 3042 } else 3043 sf = SF_QUIET_IR; 3044 3045 ccb = cam_periph_getccb(periph, 1); 3046 3047 /* It is safe to retry this operation */ 3048 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3049 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3050 3051 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3052 if (error == 0) { 3053 if (action == PR_ALLOW) 3054 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3055 else 3056 softc->flags |= SA_FLAG_TAPE_LOCKED; 3057 } 3058 3059 xpt_release_ccb(ccb); 3060 } 3061 3062 static int 3063 sarewind(struct cam_periph *periph) 3064 { 3065 union ccb *ccb; 3066 struct sa_softc *softc; 3067 int error; 3068 3069 softc = (struct sa_softc *)periph->softc; 3070 3071 ccb = cam_periph_getccb(periph, 1); 3072 3073 /* It is safe to retry this operation */ 3074 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3075 SSD_FULL_SIZE, REWIND_TIMEOUT); 3076 3077 softc->dsreg = MTIO_DSREG_REW; 3078 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3079 softc->dsreg = MTIO_DSREG_REST; 3080 3081 xpt_release_ccb(ccb); 3082 if (error == 0) 3083 softc->fileno = softc->blkno = (daddr_t) 0; 3084 else 3085 softc->fileno = softc->blkno = (daddr_t) -1; 3086 return (error); 3087 } 3088 3089 static int 3090 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3091 { 3092 union ccb *ccb; 3093 struct sa_softc *softc; 3094 int error; 3095 3096 softc = (struct sa_softc *)periph->softc; 3097 3098 ccb = cam_periph_getccb(periph, 1); 3099 3100 /* This cannot be retried */ 3101 3102 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3103 SSD_FULL_SIZE, SPACE_TIMEOUT); 3104 3105 /* 3106 * Clear residual because we will be using it. 3107 */ 3108 softc->last_ctl_resid = 0; 3109 3110 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3111 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3112 softc->dsreg = MTIO_DSREG_REST; 3113 3114 xpt_release_ccb(ccb); 3115 3116 /* 3117 * If a spacing operation has failed, we need to invalidate 3118 * this mount. 3119 * 3120 * If the spacing operation was setmarks or to end of recorded data, 3121 * we no longer know our relative position. 3122 * 3123 * If the spacing operations was spacing files in reverse, we 3124 * take account of the residual, but still check against less 3125 * than zero- if we've gone negative, we must have hit BOT. 3126 * 3127 * If the spacing operations was spacing records in reverse and 3128 * we have a residual, we've either hit BOT or hit a filemark. 3129 * In the former case, we know our new record number (0). In 3130 * the latter case, we have absolutely no idea what the real 3131 * record number is- we've stopped between the end of the last 3132 * record in the previous file and the filemark that stopped 3133 * our spacing backwards. 3134 */ 3135 if (error) { 3136 softc->fileno = softc->blkno = (daddr_t) -1; 3137 } else if (code == SS_SETMARKS || code == SS_EOD) { 3138 softc->fileno = softc->blkno = (daddr_t) -1; 3139 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3140 softc->fileno += (count - softc->last_ctl_resid); 3141 if (softc->fileno < 0) /* we must of hit BOT */ 3142 softc->fileno = 0; 3143 softc->blkno = 0; 3144 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3145 softc->blkno += (count - softc->last_ctl_resid); 3146 if (count < 0) { 3147 if (softc->last_ctl_resid || softc->blkno < 0) { 3148 if (softc->fileno == 0) { 3149 softc->blkno = 0; 3150 } else { 3151 softc->blkno = (daddr_t) -1; 3152 } 3153 } 3154 } 3155 } 3156 return (error); 3157 } 3158 3159 static int 3160 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3161 { 3162 union ccb *ccb; 3163 struct sa_softc *softc; 3164 int error, nwm = 0; 3165 3166 softc = (struct sa_softc *)periph->softc; 3167 if (softc->open_rdonly) 3168 return (EBADF); 3169 3170 ccb = cam_periph_getccb(periph, 1); 3171 /* 3172 * Clear residual because we will be using it. 3173 */ 3174 softc->last_ctl_resid = 0; 3175 3176 softc->dsreg = MTIO_DSREG_FMK; 3177 /* this *must* not be retried */ 3178 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3179 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3180 softc->dsreg = MTIO_DSREG_REST; 3181 3182 3183 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3184 3185 if (error == 0 && nmarks) { 3186 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3187 nwm = nmarks - softc->last_ctl_resid; 3188 softc->filemarks += nwm; 3189 } 3190 3191 xpt_release_ccb(ccb); 3192 3193 /* 3194 * Update relative positions (if we're doing that). 3195 */ 3196 if (error) { 3197 softc->fileno = softc->blkno = (daddr_t) -1; 3198 } else if (softc->fileno != (daddr_t) -1) { 3199 softc->fileno += nwm; 3200 softc->blkno = 0; 3201 } 3202 return (error); 3203 } 3204 3205 static int 3206 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3207 { 3208 struct scsi_tape_position_data loc; 3209 union ccb *ccb; 3210 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3211 int error; 3212 3213 /* 3214 * We try and flush any buffered writes here if we were writing 3215 * and we're trying to get hardware block position. It eats 3216 * up performance substantially, but I'm wary of drive firmware. 3217 * 3218 * I think that *logical* block position is probably okay- 3219 * but hardware block position might have to wait for data 3220 * to hit media to be valid. Caveat Emptor. 3221 */ 3222 3223 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3224 error = sawritefilemarks(periph, 0, 0); 3225 if (error && error != EACCES) 3226 return (error); 3227 } 3228 3229 ccb = cam_periph_getccb(periph, 1); 3230 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3231 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3232 softc->dsreg = MTIO_DSREG_RBSY; 3233 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3234 softc->dsreg = MTIO_DSREG_REST; 3235 3236 if (error == 0) { 3237 if (loc.flags & SA_RPOS_UNCERTAIN) { 3238 error = EINVAL; /* nothing is certain */ 3239 } else { 3240 *blkptr = scsi_4btoul(loc.firstblk); 3241 } 3242 } 3243 3244 xpt_release_ccb(ccb); 3245 return (error); 3246 } 3247 3248 static int 3249 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3250 { 3251 union ccb *ccb; 3252 struct sa_softc *softc; 3253 int error; 3254 3255 /* 3256 * We used to try and flush any buffered writes here. 3257 * Now we push this onto user applications to either 3258 * flush the pending writes themselves (via a zero count 3259 * WRITE FILEMARKS command) or they can trust their tape 3260 * drive to do this correctly for them. 3261 */ 3262 3263 softc = (struct sa_softc *)periph->softc; 3264 ccb = cam_periph_getccb(periph, 1); 3265 3266 3267 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3268 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3269 3270 3271 softc->dsreg = MTIO_DSREG_POS; 3272 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3273 softc->dsreg = MTIO_DSREG_REST; 3274 xpt_release_ccb(ccb); 3275 /* 3276 * Note relative file && block number position as now unknown. 3277 */ 3278 softc->fileno = softc->blkno = (daddr_t) -1; 3279 return (error); 3280 } 3281 3282 static int 3283 saretension(struct cam_periph *periph) 3284 { 3285 union ccb *ccb; 3286 struct sa_softc *softc; 3287 int error; 3288 3289 softc = (struct sa_softc *)periph->softc; 3290 3291 ccb = cam_periph_getccb(periph, 1); 3292 3293 /* It is safe to retry this operation */ 3294 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3295 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3296 3297 softc->dsreg = MTIO_DSREG_TEN; 3298 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3299 softc->dsreg = MTIO_DSREG_REST; 3300 3301 xpt_release_ccb(ccb); 3302 if (error == 0) 3303 softc->fileno = softc->blkno = (daddr_t) 0; 3304 else 3305 softc->fileno = softc->blkno = (daddr_t) -1; 3306 return (error); 3307 } 3308 3309 static int 3310 sareservereleaseunit(struct cam_periph *periph, int reserve) 3311 { 3312 union ccb *ccb; 3313 struct sa_softc *softc; 3314 int error; 3315 3316 softc = (struct sa_softc *)periph->softc; 3317 ccb = cam_periph_getccb(periph, 1); 3318 3319 /* It is safe to retry this operation */ 3320 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3321 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3322 softc->dsreg = MTIO_DSREG_RBSY; 3323 error = cam_periph_runccb(ccb, saerror, 0, 3324 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3325 softc->dsreg = MTIO_DSREG_REST; 3326 xpt_release_ccb(ccb); 3327 3328 /* 3329 * If the error was Illegal Request, then the device doesn't support 3330 * RESERVE/RELEASE. This is not an error. 3331 */ 3332 if (error == EINVAL) { 3333 error = 0; 3334 } 3335 3336 return (error); 3337 } 3338 3339 static int 3340 saloadunload(struct cam_periph *periph, int load) 3341 { 3342 union ccb *ccb; 3343 struct sa_softc *softc; 3344 int error; 3345 3346 softc = (struct sa_softc *)periph->softc; 3347 3348 ccb = cam_periph_getccb(periph, 1); 3349 3350 /* It is safe to retry this operation */ 3351 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3352 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3353 3354 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3355 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3356 softc->dsreg = MTIO_DSREG_REST; 3357 xpt_release_ccb(ccb); 3358 3359 if (error || load == 0) 3360 softc->fileno = softc->blkno = (daddr_t) -1; 3361 else if (error == 0) 3362 softc->fileno = softc->blkno = (daddr_t) 0; 3363 return (error); 3364 } 3365 3366 static int 3367 saerase(struct cam_periph *periph, int longerase) 3368 { 3369 3370 union ccb *ccb; 3371 struct sa_softc *softc; 3372 int error; 3373 3374 softc = (struct sa_softc *)periph->softc; 3375 if (softc->open_rdonly) 3376 return (EBADF); 3377 3378 ccb = cam_periph_getccb(periph, 1); 3379 3380 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3381 SSD_FULL_SIZE, ERASE_TIMEOUT); 3382 3383 softc->dsreg = MTIO_DSREG_ZER; 3384 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3385 softc->dsreg = MTIO_DSREG_REST; 3386 3387 xpt_release_ccb(ccb); 3388 return (error); 3389 } 3390 3391 #endif /* _KERNEL */ 3392 3393 /* 3394 * Read tape block limits command. 3395 */ 3396 void 3397 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3398 void (*cbfcnp)(struct cam_periph *, union ccb *), 3399 u_int8_t tag_action, 3400 struct scsi_read_block_limits_data *rlimit_buf, 3401 u_int8_t sense_len, u_int32_t timeout) 3402 { 3403 struct scsi_read_block_limits *scsi_cmd; 3404 3405 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3406 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3407 sizeof(*scsi_cmd), timeout); 3408 3409 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3410 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3411 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3412 } 3413 3414 void 3415 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3416 void (*cbfcnp)(struct cam_periph *, union ccb *), 3417 u_int8_t tag_action, int readop, int sli, 3418 int fixed, u_int32_t length, u_int8_t *data_ptr, 3419 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3420 { 3421 struct scsi_sa_rw *scsi_cmd; 3422 3423 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3424 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3425 scsi_cmd->sli_fixed = 0; 3426 if (sli && readop) 3427 scsi_cmd->sli_fixed |= SAR_SLI; 3428 if (fixed) 3429 scsi_cmd->sli_fixed |= SARW_FIXED; 3430 scsi_ulto3b(length, scsi_cmd->length); 3431 scsi_cmd->control = 0; 3432 3433 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3434 tag_action, data_ptr, dxfer_len, sense_len, 3435 sizeof(*scsi_cmd), timeout); 3436 } 3437 3438 void 3439 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3440 void (*cbfcnp)(struct cam_periph *, union ccb *), 3441 u_int8_t tag_action, int immediate, int eot, 3442 int reten, int load, u_int8_t sense_len, 3443 u_int32_t timeout) 3444 { 3445 struct scsi_load_unload *scsi_cmd; 3446 3447 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3448 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3449 scsi_cmd->opcode = LOAD_UNLOAD; 3450 if (immediate) 3451 scsi_cmd->immediate = SLU_IMMED; 3452 if (eot) 3453 scsi_cmd->eot_reten_load |= SLU_EOT; 3454 if (reten) 3455 scsi_cmd->eot_reten_load |= SLU_RETEN; 3456 if (load) 3457 scsi_cmd->eot_reten_load |= SLU_LOAD; 3458 3459 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3460 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3461 } 3462 3463 void 3464 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3465 void (*cbfcnp)(struct cam_periph *, union ccb *), 3466 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3467 u_int32_t timeout) 3468 { 3469 struct scsi_rewind *scsi_cmd; 3470 3471 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3472 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3473 scsi_cmd->opcode = REWIND; 3474 if (immediate) 3475 scsi_cmd->immediate = SREW_IMMED; 3476 3477 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3478 0, sense_len, sizeof(*scsi_cmd), timeout); 3479 } 3480 3481 void 3482 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3483 void (*cbfcnp)(struct cam_periph *, union ccb *), 3484 u_int8_t tag_action, scsi_space_code code, 3485 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3486 { 3487 struct scsi_space *scsi_cmd; 3488 3489 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3490 scsi_cmd->opcode = SPACE; 3491 scsi_cmd->code = code; 3492 scsi_ulto3b(count, scsi_cmd->count); 3493 scsi_cmd->control = 0; 3494 3495 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3496 0, sense_len, sizeof(*scsi_cmd), timeout); 3497 } 3498 3499 void 3500 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3501 void (*cbfcnp)(struct cam_periph *, union ccb *), 3502 u_int8_t tag_action, int immediate, int setmark, 3503 u_int32_t num_marks, u_int8_t sense_len, 3504 u_int32_t timeout) 3505 { 3506 struct scsi_write_filemarks *scsi_cmd; 3507 3508 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3509 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3510 scsi_cmd->opcode = WRITE_FILEMARKS; 3511 if (immediate) 3512 scsi_cmd->byte2 |= SWFMRK_IMMED; 3513 if (setmark) 3514 scsi_cmd->byte2 |= SWFMRK_WSMK; 3515 3516 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3517 3518 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3519 0, sense_len, sizeof(*scsi_cmd), timeout); 3520 } 3521 3522 /* 3523 * The reserve and release unit commands differ only by their opcodes. 3524 */ 3525 void 3526 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3527 void (*cbfcnp)(struct cam_periph *, union ccb *), 3528 u_int8_t tag_action, int third_party, 3529 int third_party_id, u_int8_t sense_len, 3530 u_int32_t timeout, int reserve) 3531 { 3532 struct scsi_reserve_release_unit *scsi_cmd; 3533 3534 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3535 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3536 3537 if (reserve) 3538 scsi_cmd->opcode = RESERVE_UNIT; 3539 else 3540 scsi_cmd->opcode = RELEASE_UNIT; 3541 3542 if (third_party) { 3543 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3544 scsi_cmd->lun_thirdparty |= 3545 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3546 } 3547 3548 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3549 0, sense_len, sizeof(*scsi_cmd), timeout); 3550 } 3551 3552 void 3553 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3554 void (*cbfcnp)(struct cam_periph *, union ccb *), 3555 u_int8_t tag_action, int immediate, int long_erase, 3556 u_int8_t sense_len, u_int32_t timeout) 3557 { 3558 struct scsi_erase *scsi_cmd; 3559 3560 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3561 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3562 3563 scsi_cmd->opcode = ERASE; 3564 3565 if (immediate) 3566 scsi_cmd->lun_imm_long |= SE_IMMED; 3567 3568 if (long_erase) 3569 scsi_cmd->lun_imm_long |= SE_LONG; 3570 3571 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3572 0, sense_len, sizeof(*scsi_cmd), timeout); 3573 } 3574 3575 /* 3576 * Read Tape Position command. 3577 */ 3578 void 3579 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3580 void (*cbfcnp)(struct cam_periph *, union ccb *), 3581 u_int8_t tag_action, int hardsoft, 3582 struct scsi_tape_position_data *sbp, 3583 u_int8_t sense_len, u_int32_t timeout) 3584 { 3585 struct scsi_tape_read_position *scmd; 3586 3587 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3588 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3589 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3590 bzero(scmd, sizeof(*scmd)); 3591 scmd->opcode = READ_POSITION; 3592 scmd->byte1 = hardsoft; 3593 } 3594 3595 /* 3596 * Set Tape Position command. 3597 */ 3598 void 3599 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3600 void (*cbfcnp)(struct cam_periph *, union ccb *), 3601 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3602 u_int8_t sense_len, u_int32_t timeout) 3603 { 3604 struct scsi_tape_locate *scmd; 3605 3606 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3607 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3608 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3609 bzero(scmd, sizeof(*scmd)); 3610 scmd->opcode = LOCATE; 3611 if (hardsoft) 3612 scmd->byte1 |= SA_SPOS_BT; 3613 scsi_ulto4b(blkno, scmd->blkaddr); 3614 } 3615