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