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 #include <sys/sysctl.h> 47 #include <sys/taskqueue.h> 48 #endif 49 #include <sys/fcntl.h> 50 #include <sys/devicestat.h> 51 52 #ifndef _KERNEL 53 #include <stdio.h> 54 #include <string.h> 55 #endif 56 57 #include <cam/cam.h> 58 #include <cam/cam_ccb.h> 59 #include <cam/cam_periph.h> 60 #include <cam/cam_xpt_periph.h> 61 #include <cam/cam_debug.h> 62 63 #include <cam/scsi/scsi_all.h> 64 #include <cam/scsi/scsi_message.h> 65 #include <cam/scsi/scsi_sa.h> 66 67 #ifdef _KERNEL 68 69 #include <opt_sa.h> 70 71 #ifndef SA_IO_TIMEOUT 72 #define SA_IO_TIMEOUT 4 73 #endif 74 #ifndef SA_SPACE_TIMEOUT 75 #define SA_SPACE_TIMEOUT 1 * 60 76 #endif 77 #ifndef SA_REWIND_TIMEOUT 78 #define SA_REWIND_TIMEOUT 2 * 60 79 #endif 80 #ifndef SA_ERASE_TIMEOUT 81 #define SA_ERASE_TIMEOUT 4 * 60 82 #endif 83 84 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 85 86 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 87 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 88 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 89 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 90 91 /* 92 * Additional options that can be set for config: SA_1FM_AT_EOT 93 */ 94 95 #ifndef UNUSED_PARAMETER 96 #define UNUSED_PARAMETER(x) x = x 97 #endif 98 99 #define QFRLS(ccb) \ 100 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 101 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 102 103 /* 104 * Driver states 105 */ 106 107 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 108 109 typedef enum { 110 SA_STATE_NORMAL, SA_STATE_ABNORMAL 111 } sa_state; 112 113 #define ccb_pflags ppriv_field0 114 #define ccb_bp ppriv_ptr1 115 116 /* bits in ccb_pflags */ 117 #define SA_POSITION_UPDATED 0x1 118 119 120 typedef enum { 121 SA_FLAG_OPEN = 0x0001, 122 SA_FLAG_FIXED = 0x0002, 123 SA_FLAG_TAPE_LOCKED = 0x0004, 124 SA_FLAG_TAPE_MOUNTED = 0x0008, 125 SA_FLAG_TAPE_WP = 0x0010, 126 SA_FLAG_TAPE_WRITTEN = 0x0020, 127 SA_FLAG_EOM_PENDING = 0x0040, 128 SA_FLAG_EIO_PENDING = 0x0080, 129 SA_FLAG_EOF_PENDING = 0x0100, 130 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 131 SA_FLAG_EOF_PENDING), 132 SA_FLAG_INVALID = 0x0200, 133 SA_FLAG_COMP_ENABLED = 0x0400, 134 SA_FLAG_COMP_SUPP = 0x0800, 135 SA_FLAG_COMP_UNSUPP = 0x1000, 136 SA_FLAG_TAPE_FROZEN = 0x2000 137 } sa_flags; 138 139 typedef enum { 140 SA_MODE_REWIND = 0x00, 141 SA_MODE_NOREWIND = 0x01, 142 SA_MODE_OFFLINE = 0x02 143 } sa_mode; 144 145 typedef enum { 146 SA_PARAM_NONE = 0x00, 147 SA_PARAM_BLOCKSIZE = 0x01, 148 SA_PARAM_DENSITY = 0x02, 149 SA_PARAM_COMPRESSION = 0x04, 150 SA_PARAM_BUFF_MODE = 0x08, 151 SA_PARAM_NUMBLOCKS = 0x10, 152 SA_PARAM_WP = 0x20, 153 SA_PARAM_SPEED = 0x40, 154 SA_PARAM_ALL = 0x7f 155 } sa_params; 156 157 typedef enum { 158 SA_QUIRK_NONE = 0x00, 159 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 160 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 161 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 162 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 163 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 164 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 165 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 166 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 167 } sa_quirks; 168 169 #define SA_QUIRK_BIT_STRING \ 170 "\020" \ 171 "\001NOCOMP" \ 172 "\002FIXED" \ 173 "\003VARIABLE" \ 174 "\0042FM" \ 175 "\0051FM" \ 176 "\006NODREAD" \ 177 "\007NO_MODESEL" \ 178 "\010NO_CPAGE" 179 180 #define SAMODE(z) (dev2unit(z) & 0x3) 181 #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) 182 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 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, mode, access) \ 192 ((ctl << 4) | (mode << 2) | (access & 0x3)) 193 194 #define SA_NUM_MODES 4 195 struct sa_devs { 196 struct cdev *ctl_dev; 197 struct sa_mode_devs { 198 struct cdev *r_dev; 199 struct cdev *nr_dev; 200 struct cdev *er_dev; 201 } mode_devs[SA_NUM_MODES]; 202 }; 203 204 struct sa_softc { 205 sa_state state; 206 sa_flags flags; 207 sa_quirks quirks; 208 u_int si_flags; 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 maxio; 219 u_int32_t cpi_maxio; 220 int allow_io_split; 221 u_int32_t comp_algorithm; 222 u_int32_t saved_comp_algorithm; 223 u_int32_t media_blksize; 224 u_int32_t last_media_blksize; 225 u_int32_t media_numblks; 226 u_int8_t media_density; 227 u_int8_t speed; 228 u_int8_t scsi_rev; 229 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 230 int buffer_mode; 231 int filemarks; 232 union ccb saved_ccb; 233 int last_resid_was_io; 234 235 /* 236 * Relative to BOT Location. 237 */ 238 daddr_t fileno; 239 daddr_t blkno; 240 241 /* 242 * Latched Error Info 243 */ 244 struct { 245 struct scsi_sense_data _last_io_sense; 246 u_int64_t _last_io_resid; 247 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 248 struct scsi_sense_data _last_ctl_sense; 249 u_int64_t _last_ctl_resid; 250 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 251 #define last_io_sense errinfo._last_io_sense 252 #define last_io_resid errinfo._last_io_resid 253 #define last_io_cdb errinfo._last_io_cdb 254 #define last_ctl_sense errinfo._last_ctl_sense 255 #define last_ctl_resid errinfo._last_ctl_resid 256 #define last_ctl_cdb errinfo._last_ctl_cdb 257 } errinfo; 258 /* 259 * Misc other flags/state 260 */ 261 u_int32_t 262 : 29, 263 open_rdonly : 1, /* open read-only */ 264 open_pending_mount : 1, /* open pending mount */ 265 ctrl_mode : 1; /* control device open */ 266 267 struct task sysctl_task; 268 struct sysctl_ctx_list sysctl_ctx; 269 struct sysctl_oid *sysctl_tree; 270 }; 271 272 struct sa_quirk_entry { 273 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 274 sa_quirks quirks; /* specific quirk type */ 275 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 276 }; 277 278 static struct sa_quirk_entry sa_quirk_table[] = 279 { 280 { 281 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 282 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 283 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 284 }, 285 { 286 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 287 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 288 }, 289 { 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 291 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 292 }, 293 { 294 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 295 "Python*", "*"}, SA_QUIRK_NODREAD, 0 296 }, 297 { 298 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 299 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 300 }, 301 { 302 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 303 "VIPER 2525 25462", "-011"}, 304 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 305 }, 306 { 307 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 308 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 309 }, 310 #if 0 311 { 312 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 313 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 314 }, 315 #endif 316 { 317 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 318 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 319 }, 320 { 321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 322 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 323 }, 324 { 325 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 326 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 327 }, 328 { 329 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 330 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 331 }, 332 { 333 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 334 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 335 }, 336 { 337 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 338 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 339 }, 340 { /* jreynold@primenet.com */ 341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 342 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 343 }, 344 { /* mike@sentex.net */ 345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 346 "STT20000*", "*"}, SA_QUIRK_1FM, 0 347 }, 348 { 349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 350 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 351 }, 352 { 353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 354 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 355 }, 356 { 357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 358 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 359 }, 360 { 361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 362 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 363 }, 364 { 365 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 366 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 367 }, 368 { 369 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 370 " SLR*", "*"}, SA_QUIRK_1FM, 0 371 }, 372 { 373 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 374 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 375 }, 376 { 377 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 378 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 379 } 380 }; 381 382 static d_open_t saopen; 383 static d_close_t saclose; 384 static d_strategy_t sastrategy; 385 static d_ioctl_t saioctl; 386 static periph_init_t sainit; 387 static periph_ctor_t saregister; 388 static periph_oninv_t saoninvalidate; 389 static periph_dtor_t sacleanup; 390 static periph_start_t sastart; 391 static void saasync(void *callback_arg, u_int32_t code, 392 struct cam_path *path, void *arg); 393 static void sadone(struct cam_periph *periph, 394 union ccb *start_ccb); 395 static int saerror(union ccb *ccb, u_int32_t cam_flags, 396 u_int32_t sense_flags); 397 static int samarkswanted(struct cam_periph *); 398 static int sacheckeod(struct cam_periph *periph); 399 static int sagetparams(struct cam_periph *periph, 400 sa_params params_to_get, 401 u_int32_t *blocksize, u_int8_t *density, 402 u_int32_t *numblocks, int *buff_mode, 403 u_int8_t *write_protect, u_int8_t *speed, 404 int *comp_supported, int *comp_enabled, 405 u_int32_t *comp_algorithm, 406 sa_comp_t *comp_page); 407 static int sasetparams(struct cam_periph *periph, 408 sa_params params_to_set, 409 u_int32_t blocksize, u_int8_t density, 410 u_int32_t comp_algorithm, 411 u_int32_t sense_flags); 412 static void saprevent(struct cam_periph *periph, int action); 413 static int sarewind(struct cam_periph *periph); 414 static int saspace(struct cam_periph *periph, int count, 415 scsi_space_code code); 416 static int samount(struct cam_periph *, int, struct cdev *); 417 static int saretension(struct cam_periph *periph); 418 static int sareservereleaseunit(struct cam_periph *periph, 419 int reserve); 420 static int saloadunload(struct cam_periph *periph, int load); 421 static int saerase(struct cam_periph *periph, int longerase); 422 static int sawritefilemarks(struct cam_periph *periph, 423 int nmarks, int setmarks); 424 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 425 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 426 427 428 #ifndef SA_DEFAULT_IO_SPLIT 429 #define SA_DEFAULT_IO_SPLIT 0 430 #endif 431 432 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 433 434 /* 435 * Tunable to allow the user to set a global allow_io_split value. Note 436 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 437 * is bad behavior, because it hides the true tape block size from the 438 * application. 439 */ 440 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 441 "CAM Sequential Access Tape Driver"); 442 SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN, 443 &sa_allow_io_split, 0, "Default I/O split value"); 444 445 static struct periph_driver sadriver = 446 { 447 sainit, "sa", 448 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 449 }; 450 451 PERIPHDRIVER_DECLARE(sa, sadriver); 452 453 /* For 2.2-stable support */ 454 #ifndef D_TAPE 455 #define D_TAPE 0 456 #endif 457 458 459 static struct cdevsw sa_cdevsw = { 460 .d_version = D_VERSION, 461 .d_open = saopen, 462 .d_close = saclose, 463 .d_read = physread, 464 .d_write = physwrite, 465 .d_ioctl = saioctl, 466 .d_strategy = sastrategy, 467 .d_name = "sa", 468 .d_flags = D_TAPE, 469 }; 470 471 static int 472 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 473 { 474 struct cam_periph *periph; 475 struct sa_softc *softc; 476 int error; 477 478 periph = (struct cam_periph *)dev->si_drv1; 479 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 480 return (ENXIO); 481 } 482 483 cam_periph_lock(periph); 484 485 softc = (struct sa_softc *)periph->softc; 486 487 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 488 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 489 490 if (SA_IS_CTRL(dev)) { 491 softc->ctrl_mode = 1; 492 cam_periph_unlock(periph); 493 return (0); 494 } 495 496 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 497 cam_periph_unlock(periph); 498 cam_periph_release(periph); 499 return (error); 500 } 501 502 if (softc->flags & SA_FLAG_OPEN) { 503 error = EBUSY; 504 } else if (softc->flags & SA_FLAG_INVALID) { 505 error = ENXIO; 506 } else { 507 /* 508 * Preserve whether this is a read_only open. 509 */ 510 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 511 512 /* 513 * The function samount ensures media is loaded and ready. 514 * It also does a device RESERVE if the tape isn't yet mounted. 515 * 516 * If the mount fails and this was a non-blocking open, 517 * make this a 'open_pending_mount' action. 518 */ 519 error = samount(periph, flags, dev); 520 if (error && (flags & O_NONBLOCK)) { 521 softc->flags |= SA_FLAG_OPEN; 522 softc->open_pending_mount = 1; 523 cam_periph_unhold(periph); 524 cam_periph_unlock(periph); 525 return (0); 526 } 527 } 528 529 if (error) { 530 cam_periph_unhold(periph); 531 cam_periph_unlock(periph); 532 cam_periph_release(periph); 533 return (error); 534 } 535 536 saprevent(periph, PR_PREVENT); 537 softc->flags |= SA_FLAG_OPEN; 538 539 cam_periph_unhold(periph); 540 cam_periph_unlock(periph); 541 return (error); 542 } 543 544 static int 545 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 546 { 547 struct cam_periph *periph; 548 struct sa_softc *softc; 549 int mode, error, writing, tmp; 550 int closedbits = SA_FLAG_OPEN; 551 552 mode = SAMODE(dev); 553 periph = (struct cam_periph *)dev->si_drv1; 554 if (periph == NULL) 555 return (ENXIO); 556 557 cam_periph_lock(periph); 558 559 softc = (struct sa_softc *)periph->softc; 560 561 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 562 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 563 564 565 softc->open_rdonly = 0; 566 if (SA_IS_CTRL(dev)) { 567 softc->ctrl_mode = 0; 568 cam_periph_unlock(periph); 569 cam_periph_release(periph); 570 return (0); 571 } 572 573 if (softc->open_pending_mount) { 574 softc->flags &= ~SA_FLAG_OPEN; 575 softc->open_pending_mount = 0; 576 cam_periph_unlock(periph); 577 cam_periph_release(periph); 578 return (0); 579 } 580 581 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 582 cam_periph_unlock(periph); 583 return (error); 584 } 585 586 /* 587 * Were we writing the tape? 588 */ 589 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 590 591 /* 592 * See whether or not we need to write filemarks. If this 593 * fails, we probably have to assume we've lost tape 594 * position. 595 */ 596 error = sacheckeod(periph); 597 if (error) { 598 xpt_print(periph->path, 599 "failed to write terminating filemark(s)\n"); 600 softc->flags |= SA_FLAG_TAPE_FROZEN; 601 } 602 603 /* 604 * Whatever we end up doing, allow users to eject tapes from here on. 605 */ 606 saprevent(periph, PR_ALLOW); 607 608 /* 609 * Decide how to end... 610 */ 611 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 612 closedbits |= SA_FLAG_TAPE_FROZEN; 613 } else switch (mode) { 614 case SA_MODE_OFFLINE: 615 /* 616 * An 'offline' close is an unconditional release of 617 * frozen && mount conditions, irrespective of whether 618 * these operations succeeded. The reason for this is 619 * to allow at least some kind of programmatic way 620 * around our state getting all fouled up. If somebody 621 * issues an 'offline' command, that will be allowed 622 * to clear state. 623 */ 624 (void) sarewind(periph); 625 (void) saloadunload(periph, FALSE); 626 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 627 break; 628 case SA_MODE_REWIND: 629 /* 630 * If the rewind fails, return an error- if anyone cares, 631 * but not overwriting any previous error. 632 * 633 * We don't clear the notion of mounted here, but we do 634 * clear the notion of frozen if we successfully rewound. 635 */ 636 tmp = sarewind(periph); 637 if (tmp) { 638 if (error != 0) 639 error = tmp; 640 } else { 641 closedbits |= SA_FLAG_TAPE_FROZEN; 642 } 643 break; 644 case SA_MODE_NOREWIND: 645 /* 646 * If we're not rewinding/unloading the tape, find out 647 * whether we need to back up over one of two filemarks 648 * we wrote (if we wrote two filemarks) so that appends 649 * from this point on will be sane. 650 */ 651 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 652 tmp = saspace(periph, -1, SS_FILEMARKS); 653 if (tmp) { 654 xpt_print(periph->path, "unable to backspace " 655 "over one of double filemarks at end of " 656 "tape\n"); 657 xpt_print(periph->path, "it is possible that " 658 "this device needs a SA_QUIRK_1FM quirk set" 659 "for it\n"); 660 softc->flags |= SA_FLAG_TAPE_FROZEN; 661 } 662 } 663 break; 664 default: 665 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 666 /* NOTREACHED */ 667 break; 668 } 669 670 /* 671 * We wish to note here that there are no more filemarks to be written. 672 */ 673 softc->filemarks = 0; 674 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 675 676 /* 677 * And we are no longer open for business. 678 */ 679 softc->flags &= ~closedbits; 680 681 /* 682 * Inform users if tape state if frozen.... 683 */ 684 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 685 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 686 "REWIND or MTEOM command to clear this state.\n"); 687 } 688 689 /* release the device if it is no longer mounted */ 690 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 691 sareservereleaseunit(periph, FALSE); 692 693 cam_periph_unhold(periph); 694 cam_periph_unlock(periph); 695 cam_periph_release(periph); 696 697 return (error); 698 } 699 700 /* 701 * Actually translate the requested transfer into one the physical driver 702 * can understand. The transfer is described by a buf and will include 703 * only one physical transfer. 704 */ 705 static void 706 sastrategy(struct bio *bp) 707 { 708 struct cam_periph *periph; 709 struct sa_softc *softc; 710 711 bp->bio_resid = bp->bio_bcount; 712 if (SA_IS_CTRL(bp->bio_dev)) { 713 biofinish(bp, NULL, EINVAL); 714 return; 715 } 716 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 717 if (periph == NULL) { 718 biofinish(bp, NULL, ENXIO); 719 return; 720 } 721 cam_periph_lock(periph); 722 723 softc = (struct sa_softc *)periph->softc; 724 725 if (softc->flags & SA_FLAG_INVALID) { 726 cam_periph_unlock(periph); 727 biofinish(bp, NULL, ENXIO); 728 return; 729 } 730 731 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 732 cam_periph_unlock(periph); 733 biofinish(bp, NULL, EPERM); 734 return; 735 } 736 737 /* 738 * This should actually never occur as the write(2) 739 * system call traps attempts to write to a read-only 740 * file descriptor. 741 */ 742 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 743 cam_periph_unlock(periph); 744 biofinish(bp, NULL, EBADF); 745 return; 746 } 747 748 if (softc->open_pending_mount) { 749 int error = samount(periph, 0, bp->bio_dev); 750 if (error) { 751 cam_periph_unlock(periph); 752 biofinish(bp, NULL, ENXIO); 753 return; 754 } 755 saprevent(periph, PR_PREVENT); 756 softc->open_pending_mount = 0; 757 } 758 759 760 /* 761 * If it's a null transfer, return immediately 762 */ 763 if (bp->bio_bcount == 0) { 764 cam_periph_unlock(periph); 765 biodone(bp); 766 return; 767 } 768 769 /* valid request? */ 770 if (softc->flags & SA_FLAG_FIXED) { 771 /* 772 * Fixed block device. The byte count must 773 * be a multiple of our block size. 774 */ 775 if (((softc->blk_mask != ~0) && 776 ((bp->bio_bcount & softc->blk_mask) != 0)) || 777 ((softc->blk_mask == ~0) && 778 ((bp->bio_bcount % softc->min_blk) != 0))) { 779 xpt_print(periph->path, "Invalid request. Fixed block " 780 "device requests must be a multiple of %d bytes\n", 781 softc->min_blk); 782 cam_periph_unlock(periph); 783 biofinish(bp, NULL, EINVAL); 784 return; 785 } 786 } else if ((bp->bio_bcount > softc->max_blk) || 787 (bp->bio_bcount < softc->min_blk) || 788 (bp->bio_bcount & softc->blk_mask) != 0) { 789 790 xpt_print_path(periph->path); 791 printf("Invalid request. Variable block " 792 "device requests must be "); 793 if (softc->blk_mask != 0) { 794 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 795 } 796 printf("between %d and %d bytes\n", softc->min_blk, 797 softc->max_blk); 798 cam_periph_unlock(periph); 799 biofinish(bp, NULL, EINVAL); 800 return; 801 } 802 803 /* 804 * Place it at the end of the queue. 805 */ 806 bioq_insert_tail(&softc->bio_queue, bp); 807 softc->queue_count++; 808 #if 0 809 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 810 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 811 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 812 (bp->bio_cmd == BIO_READ)? "read" : "write")); 813 #endif 814 if (softc->queue_count > 1) { 815 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 816 ("sastrategy: queue count now %d\n", softc->queue_count)); 817 } 818 819 /* 820 * Schedule ourselves for performing the work. 821 */ 822 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 823 cam_periph_unlock(periph); 824 825 return; 826 } 827 828 829 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 830 if (softc->open_pending_mount) { \ 831 error = samount(periph, 0, dev); \ 832 if (error) { \ 833 break; \ 834 } \ 835 saprevent(periph, PR_PREVENT); \ 836 softc->open_pending_mount = 0; \ 837 } 838 839 static int 840 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 841 { 842 struct cam_periph *periph; 843 struct sa_softc *softc; 844 scsi_space_code spaceop; 845 int didlockperiph = 0; 846 int mode; 847 int error = 0; 848 849 mode = SAMODE(dev); 850 error = 0; /* shut up gcc */ 851 spaceop = 0; /* shut up gcc */ 852 853 periph = (struct cam_periph *)dev->si_drv1; 854 if (periph == NULL) 855 return (ENXIO); 856 857 cam_periph_lock(periph); 858 softc = (struct sa_softc *)periph->softc; 859 860 /* 861 * Check for control mode accesses. We allow MTIOCGET and 862 * MTIOCERRSTAT (but need to be the only one open in order 863 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 864 * and MTCOMP (but need to be the only one accessing this 865 * device to run those). 866 */ 867 868 if (SA_IS_CTRL(dev)) { 869 switch (cmd) { 870 case MTIOCGETEOTMODEL: 871 case MTIOCGET: 872 break; 873 case MTIOCERRSTAT: 874 /* 875 * If the periph isn't already locked, lock it 876 * so our MTIOCERRSTAT can reset latched error stats. 877 * 878 * If the periph is already locked, skip it because 879 * we're just getting status and it'll be up to the 880 * other thread that has this device open to do 881 * an MTIOCERRSTAT that would clear latched status. 882 */ 883 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 884 error = cam_periph_hold(periph, PRIBIO|PCATCH); 885 if (error != 0) { 886 cam_periph_unlock(periph); 887 return (error); 888 } 889 didlockperiph = 1; 890 } 891 break; 892 893 case MTIOCTOP: 894 { 895 struct mtop *mt = (struct mtop *) arg; 896 897 /* 898 * Check to make sure it's an OP we can perform 899 * with no media inserted. 900 */ 901 switch (mt->mt_op) { 902 case MTSETBSIZ: 903 case MTSETDNSTY: 904 case MTCOMP: 905 mt = NULL; 906 /* FALLTHROUGH */ 907 default: 908 break; 909 } 910 if (mt != NULL) { 911 break; 912 } 913 /* FALLTHROUGH */ 914 } 915 case MTIOCSETEOTMODEL: 916 /* 917 * We need to acquire the peripheral here rather 918 * than at open time because we are sharing writable 919 * access to data structures. 920 */ 921 error = cam_periph_hold(periph, PRIBIO|PCATCH); 922 if (error != 0) { 923 cam_periph_unlock(periph); 924 return (error); 925 } 926 didlockperiph = 1; 927 break; 928 929 default: 930 cam_periph_unlock(periph); 931 return (EINVAL); 932 } 933 } 934 935 /* 936 * Find the device that the user is talking about 937 */ 938 switch (cmd) { 939 case MTIOCGET: 940 { 941 struct mtget *g = (struct mtget *)arg; 942 943 /* 944 * If this isn't the control mode device, actually go out 945 * and ask the drive again what it's set to. 946 */ 947 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 948 u_int8_t write_protect; 949 int comp_enabled, comp_supported; 950 error = sagetparams(periph, SA_PARAM_ALL, 951 &softc->media_blksize, &softc->media_density, 952 &softc->media_numblks, &softc->buffer_mode, 953 &write_protect, &softc->speed, &comp_supported, 954 &comp_enabled, &softc->comp_algorithm, NULL); 955 if (error) 956 break; 957 if (write_protect) 958 softc->flags |= SA_FLAG_TAPE_WP; 959 else 960 softc->flags &= ~SA_FLAG_TAPE_WP; 961 softc->flags &= ~(SA_FLAG_COMP_SUPP| 962 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 963 if (comp_supported) { 964 if (softc->saved_comp_algorithm == 0) 965 softc->saved_comp_algorithm = 966 softc->comp_algorithm; 967 softc->flags |= SA_FLAG_COMP_SUPP; 968 if (comp_enabled) 969 softc->flags |= SA_FLAG_COMP_ENABLED; 970 } else 971 softc->flags |= SA_FLAG_COMP_UNSUPP; 972 } 973 bzero(g, sizeof(struct mtget)); 974 g->mt_type = MT_ISAR; 975 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 976 g->mt_comp = MT_COMP_UNSUPP; 977 g->mt_comp0 = MT_COMP_UNSUPP; 978 g->mt_comp1 = MT_COMP_UNSUPP; 979 g->mt_comp2 = MT_COMP_UNSUPP; 980 g->mt_comp3 = MT_COMP_UNSUPP; 981 } else { 982 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 983 g->mt_comp = MT_COMP_DISABLED; 984 } else { 985 g->mt_comp = softc->comp_algorithm; 986 } 987 g->mt_comp0 = softc->comp_algorithm; 988 g->mt_comp1 = softc->comp_algorithm; 989 g->mt_comp2 = softc->comp_algorithm; 990 g->mt_comp3 = softc->comp_algorithm; 991 } 992 g->mt_density = softc->media_density; 993 g->mt_density0 = softc->media_density; 994 g->mt_density1 = softc->media_density; 995 g->mt_density2 = softc->media_density; 996 g->mt_density3 = softc->media_density; 997 g->mt_blksiz = softc->media_blksize; 998 g->mt_blksiz0 = softc->media_blksize; 999 g->mt_blksiz1 = softc->media_blksize; 1000 g->mt_blksiz2 = softc->media_blksize; 1001 g->mt_blksiz3 = softc->media_blksize; 1002 g->mt_fileno = softc->fileno; 1003 g->mt_blkno = softc->blkno; 1004 g->mt_dsreg = (short) softc->dsreg; 1005 /* 1006 * Yes, we know that this is likely to overflow 1007 */ 1008 if (softc->last_resid_was_io) { 1009 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1010 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1011 softc->last_io_resid = 0; 1012 } 1013 } 1014 } else { 1015 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1016 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1017 softc->last_ctl_resid = 0; 1018 } 1019 } 1020 } 1021 error = 0; 1022 break; 1023 } 1024 case MTIOCERRSTAT: 1025 { 1026 struct scsi_tape_errors *sep = 1027 &((union mterrstat *)arg)->scsi_errstat; 1028 1029 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1030 ("saioctl: MTIOCERRSTAT\n")); 1031 1032 bzero(sep, sizeof(*sep)); 1033 sep->io_resid = softc->last_io_resid; 1034 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1035 sizeof (sep->io_sense)); 1036 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1037 sizeof (sep->io_cdb)); 1038 sep->ctl_resid = softc->last_ctl_resid; 1039 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1040 sizeof (sep->ctl_sense)); 1041 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1042 sizeof (sep->ctl_cdb)); 1043 1044 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1045 didlockperiph) 1046 bzero((caddr_t) &softc->errinfo, 1047 sizeof (softc->errinfo)); 1048 error = 0; 1049 break; 1050 } 1051 case MTIOCTOP: 1052 { 1053 struct mtop *mt; 1054 int count; 1055 1056 PENDING_MOUNT_CHECK(softc, periph, dev); 1057 1058 mt = (struct mtop *)arg; 1059 1060 1061 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1062 ("saioctl: op=0x%x count=0x%x\n", 1063 mt->mt_op, mt->mt_count)); 1064 1065 count = mt->mt_count; 1066 switch (mt->mt_op) { 1067 case MTWEOF: /* write an end-of-file marker */ 1068 /* 1069 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1070 * flag because by keeping track of filemarks 1071 * we have last written we know ehether or not 1072 * we need to write more when we close the device. 1073 */ 1074 error = sawritefilemarks(periph, count, FALSE); 1075 break; 1076 case MTWSS: /* write a setmark */ 1077 error = sawritefilemarks(periph, count, TRUE); 1078 break; 1079 case MTBSR: /* backward space record */ 1080 case MTFSR: /* forward space record */ 1081 case MTBSF: /* backward space file */ 1082 case MTFSF: /* forward space file */ 1083 case MTBSS: /* backward space setmark */ 1084 case MTFSS: /* forward space setmark */ 1085 case MTEOD: /* space to end of recorded medium */ 1086 { 1087 int nmarks; 1088 1089 spaceop = SS_FILEMARKS; 1090 nmarks = softc->filemarks; 1091 error = sacheckeod(periph); 1092 if (error) { 1093 xpt_print(periph->path, 1094 "EOD check prior to spacing failed\n"); 1095 softc->flags |= SA_FLAG_EIO_PENDING; 1096 break; 1097 } 1098 nmarks -= softc->filemarks; 1099 switch(mt->mt_op) { 1100 case MTBSR: 1101 count = -count; 1102 /* FALLTHROUGH */ 1103 case MTFSR: 1104 spaceop = SS_BLOCKS; 1105 break; 1106 case MTBSF: 1107 count = -count; 1108 /* FALLTHROUGH */ 1109 case MTFSF: 1110 break; 1111 case MTBSS: 1112 count = -count; 1113 /* FALLTHROUGH */ 1114 case MTFSS: 1115 spaceop = SS_SETMARKS; 1116 break; 1117 case MTEOD: 1118 spaceop = SS_EOD; 1119 count = 0; 1120 nmarks = 0; 1121 break; 1122 default: 1123 error = EINVAL; 1124 break; 1125 } 1126 if (error) 1127 break; 1128 1129 nmarks = softc->filemarks; 1130 /* 1131 * XXX: Why are we checking again? 1132 */ 1133 error = sacheckeod(periph); 1134 if (error) 1135 break; 1136 nmarks -= softc->filemarks; 1137 error = saspace(periph, count - nmarks, spaceop); 1138 /* 1139 * At this point, clear that we've written the tape 1140 * and that we've written any filemarks. We really 1141 * don't know what the applications wishes to do next- 1142 * the sacheckeod's will make sure we terminated the 1143 * tape correctly if we'd been writing, but the next 1144 * action the user application takes will set again 1145 * whether we need to write filemarks. 1146 */ 1147 softc->flags &= 1148 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1149 softc->filemarks = 0; 1150 break; 1151 } 1152 case MTREW: /* rewind */ 1153 PENDING_MOUNT_CHECK(softc, periph, dev); 1154 (void) sacheckeod(periph); 1155 error = sarewind(periph); 1156 /* see above */ 1157 softc->flags &= 1158 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1159 softc->flags &= ~SA_FLAG_ERR_PENDING; 1160 softc->filemarks = 0; 1161 break; 1162 case MTERASE: /* erase */ 1163 PENDING_MOUNT_CHECK(softc, periph, dev); 1164 error = saerase(periph, count); 1165 softc->flags &= 1166 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1167 softc->flags &= ~SA_FLAG_ERR_PENDING; 1168 break; 1169 case MTRETENS: /* re-tension tape */ 1170 PENDING_MOUNT_CHECK(softc, periph, dev); 1171 error = saretension(periph); 1172 softc->flags &= 1173 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1174 softc->flags &= ~SA_FLAG_ERR_PENDING; 1175 break; 1176 case MTOFFL: /* rewind and put the drive offline */ 1177 1178 PENDING_MOUNT_CHECK(softc, periph, dev); 1179 1180 (void) sacheckeod(periph); 1181 /* see above */ 1182 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1183 softc->filemarks = 0; 1184 1185 error = sarewind(periph); 1186 /* clear the frozen flag anyway */ 1187 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1188 1189 /* 1190 * Be sure to allow media removal before ejecting. 1191 */ 1192 1193 saprevent(periph, PR_ALLOW); 1194 if (error == 0) { 1195 error = saloadunload(periph, FALSE); 1196 if (error == 0) { 1197 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1198 } 1199 } 1200 break; 1201 1202 case MTNOP: /* no operation, sets status only */ 1203 case MTCACHE: /* enable controller cache */ 1204 case MTNOCACHE: /* disable controller cache */ 1205 error = 0; 1206 break; 1207 1208 case MTSETBSIZ: /* Set block size for device */ 1209 1210 PENDING_MOUNT_CHECK(softc, periph, dev); 1211 1212 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1213 0, 0, 0); 1214 if (error == 0) { 1215 softc->last_media_blksize = 1216 softc->media_blksize; 1217 softc->media_blksize = count; 1218 if (count) { 1219 softc->flags |= SA_FLAG_FIXED; 1220 if (powerof2(count)) { 1221 softc->blk_shift = 1222 ffs(count) - 1; 1223 softc->blk_mask = count - 1; 1224 } else { 1225 softc->blk_mask = ~0; 1226 softc->blk_shift = 0; 1227 } 1228 /* 1229 * Make the user's desire 'persistent'. 1230 */ 1231 softc->quirks &= ~SA_QUIRK_VARIABLE; 1232 softc->quirks |= SA_QUIRK_FIXED; 1233 } else { 1234 softc->flags &= ~SA_FLAG_FIXED; 1235 if (softc->max_blk == 0) { 1236 softc->max_blk = ~0; 1237 } 1238 softc->blk_shift = 0; 1239 if (softc->blk_gran != 0) { 1240 softc->blk_mask = 1241 softc->blk_gran - 1; 1242 } else { 1243 softc->blk_mask = 0; 1244 } 1245 /* 1246 * Make the user's desire 'persistent'. 1247 */ 1248 softc->quirks |= SA_QUIRK_VARIABLE; 1249 softc->quirks &= ~SA_QUIRK_FIXED; 1250 } 1251 } 1252 break; 1253 case MTSETDNSTY: /* Set density for device and mode */ 1254 PENDING_MOUNT_CHECK(softc, periph, dev); 1255 1256 if (count > UCHAR_MAX) { 1257 error = EINVAL; 1258 break; 1259 } else { 1260 error = sasetparams(periph, SA_PARAM_DENSITY, 1261 0, count, 0, 0); 1262 } 1263 break; 1264 case MTCOMP: /* enable compression */ 1265 PENDING_MOUNT_CHECK(softc, periph, dev); 1266 /* 1267 * Some devices don't support compression, and 1268 * don't like it if you ask them for the 1269 * compression page. 1270 */ 1271 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1272 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1273 error = ENODEV; 1274 break; 1275 } 1276 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1277 0, 0, count, SF_NO_PRINT); 1278 break; 1279 default: 1280 error = EINVAL; 1281 } 1282 break; 1283 } 1284 case MTIOCIEOT: 1285 case MTIOCEEOT: 1286 error = 0; 1287 break; 1288 case MTIOCRDSPOS: 1289 PENDING_MOUNT_CHECK(softc, periph, dev); 1290 error = sardpos(periph, 0, (u_int32_t *) arg); 1291 break; 1292 case MTIOCRDHPOS: 1293 PENDING_MOUNT_CHECK(softc, periph, dev); 1294 error = sardpos(periph, 1, (u_int32_t *) arg); 1295 break; 1296 case MTIOCSLOCATE: 1297 PENDING_MOUNT_CHECK(softc, periph, dev); 1298 error = sasetpos(periph, 0, (u_int32_t *) arg); 1299 break; 1300 case MTIOCHLOCATE: 1301 PENDING_MOUNT_CHECK(softc, periph, dev); 1302 error = sasetpos(periph, 1, (u_int32_t *) arg); 1303 break; 1304 case MTIOCGETEOTMODEL: 1305 error = 0; 1306 if (softc->quirks & SA_QUIRK_1FM) 1307 mode = 1; 1308 else 1309 mode = 2; 1310 *((u_int32_t *) arg) = mode; 1311 break; 1312 case MTIOCSETEOTMODEL: 1313 error = 0; 1314 switch (*((u_int32_t *) arg)) { 1315 case 1: 1316 softc->quirks &= ~SA_QUIRK_2FM; 1317 softc->quirks |= SA_QUIRK_1FM; 1318 break; 1319 case 2: 1320 softc->quirks &= ~SA_QUIRK_1FM; 1321 softc->quirks |= SA_QUIRK_2FM; 1322 break; 1323 default: 1324 error = EINVAL; 1325 break; 1326 } 1327 break; 1328 default: 1329 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1330 break; 1331 } 1332 1333 /* 1334 * Check to see if we cleared a frozen state 1335 */ 1336 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1337 switch(cmd) { 1338 case MTIOCRDSPOS: 1339 case MTIOCRDHPOS: 1340 case MTIOCSLOCATE: 1341 case MTIOCHLOCATE: 1342 softc->fileno = (daddr_t) -1; 1343 softc->blkno = (daddr_t) -1; 1344 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1345 xpt_print(periph->path, 1346 "tape state now unfrozen.\n"); 1347 break; 1348 default: 1349 break; 1350 } 1351 } 1352 if (didlockperiph) { 1353 cam_periph_unhold(periph); 1354 } 1355 cam_periph_unlock(periph); 1356 return (error); 1357 } 1358 1359 static void 1360 sainit(void) 1361 { 1362 cam_status status; 1363 1364 /* 1365 * Install a global async callback. 1366 */ 1367 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1368 1369 if (status != CAM_REQ_CMP) { 1370 printf("sa: Failed to attach master async callback " 1371 "due to status 0x%x!\n", status); 1372 } 1373 } 1374 1375 static void 1376 saoninvalidate(struct cam_periph *periph) 1377 { 1378 struct sa_softc *softc; 1379 1380 softc = (struct sa_softc *)periph->softc; 1381 1382 /* 1383 * De-register any async callbacks. 1384 */ 1385 xpt_register_async(0, saasync, periph, periph->path); 1386 1387 softc->flags |= SA_FLAG_INVALID; 1388 1389 /* 1390 * Return all queued I/O with ENXIO. 1391 * XXX Handle any transactions queued to the card 1392 * with XPT_ABORT_CCB. 1393 */ 1394 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1395 softc->queue_count = 0; 1396 } 1397 1398 static void 1399 sacleanup(struct cam_periph *periph) 1400 { 1401 struct sa_softc *softc; 1402 int i; 1403 1404 softc = (struct sa_softc *)periph->softc; 1405 1406 devstat_remove_entry(softc->device_stats); 1407 cam_periph_unlock(periph); 1408 destroy_dev(softc->devs.ctl_dev); 1409 for (i = 0; i < SA_NUM_MODES; i++) { 1410 destroy_dev(softc->devs.mode_devs[i].r_dev); 1411 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1412 destroy_dev(softc->devs.mode_devs[i].er_dev); 1413 } 1414 cam_periph_lock(periph); 1415 free(softc, M_SCSISA); 1416 } 1417 1418 static void 1419 saasync(void *callback_arg, u_int32_t code, 1420 struct cam_path *path, void *arg) 1421 { 1422 struct cam_periph *periph; 1423 1424 periph = (struct cam_periph *)callback_arg; 1425 switch (code) { 1426 case AC_FOUND_DEVICE: 1427 { 1428 struct ccb_getdev *cgd; 1429 cam_status status; 1430 1431 cgd = (struct ccb_getdev *)arg; 1432 if (cgd == NULL) 1433 break; 1434 1435 if (cgd->protocol != PROTO_SCSI) 1436 break; 1437 1438 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1439 break; 1440 1441 /* 1442 * Allocate a peripheral instance for 1443 * this device and start the probe 1444 * process. 1445 */ 1446 status = cam_periph_alloc(saregister, saoninvalidate, 1447 sacleanup, sastart, 1448 "sa", CAM_PERIPH_BIO, path, 1449 saasync, AC_FOUND_DEVICE, cgd); 1450 1451 if (status != CAM_REQ_CMP 1452 && status != CAM_REQ_INPROG) 1453 printf("saasync: Unable to probe new device " 1454 "due to status 0x%x\n", status); 1455 break; 1456 } 1457 default: 1458 cam_periph_async(periph, code, path, arg); 1459 break; 1460 } 1461 } 1462 1463 static void 1464 sasysctlinit(void *context, int pending) 1465 { 1466 struct cam_periph *periph; 1467 struct sa_softc *softc; 1468 char tmpstr[80], tmpstr2[80]; 1469 1470 periph = (struct cam_periph *)context; 1471 /* 1472 * If the periph is invalid, no need to setup the sysctls. 1473 */ 1474 if (periph->flags & CAM_PERIPH_INVALID) 1475 goto bailout; 1476 1477 softc = (struct sa_softc *)periph->softc; 1478 1479 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 1480 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 1481 1482 sysctl_ctx_init(&softc->sysctl_ctx); 1483 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 1484 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 1485 CTLFLAG_RD, 0, tmpstr); 1486 if (softc->sysctl_tree == NULL) 1487 goto bailout; 1488 1489 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1490 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 1491 &softc->allow_io_split, 0, "Allow Splitting I/O"); 1492 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1493 OID_AUTO, "maxio", CTLFLAG_RD, 1494 &softc->maxio, 0, "Maximum I/O size"); 1495 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1496 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 1497 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 1498 1499 bailout: 1500 /* 1501 * Release the reference that was held when this task was enqueued. 1502 */ 1503 cam_periph_release(periph); 1504 } 1505 1506 static cam_status 1507 saregister(struct cam_periph *periph, void *arg) 1508 { 1509 struct sa_softc *softc; 1510 struct ccb_getdev *cgd; 1511 struct ccb_pathinq cpi; 1512 caddr_t match; 1513 char tmpstr[80]; 1514 int i; 1515 1516 cgd = (struct ccb_getdev *)arg; 1517 if (cgd == NULL) { 1518 printf("saregister: no getdev CCB, can't register device\n"); 1519 return (CAM_REQ_CMP_ERR); 1520 } 1521 1522 softc = (struct sa_softc *) 1523 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1524 if (softc == NULL) { 1525 printf("saregister: Unable to probe new device. " 1526 "Unable to allocate softc\n"); 1527 return (CAM_REQ_CMP_ERR); 1528 } 1529 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1530 softc->state = SA_STATE_NORMAL; 1531 softc->fileno = (daddr_t) -1; 1532 softc->blkno = (daddr_t) -1; 1533 1534 bioq_init(&softc->bio_queue); 1535 periph->softc = softc; 1536 1537 /* 1538 * See if this device has any quirks. 1539 */ 1540 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1541 (caddr_t)sa_quirk_table, 1542 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1543 sizeof(*sa_quirk_table), scsi_inquiry_match); 1544 1545 if (match != NULL) { 1546 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1547 softc->last_media_blksize = 1548 ((struct sa_quirk_entry *)match)->prefblk; 1549 } else 1550 softc->quirks = SA_QUIRK_NONE; 1551 1552 bzero(&cpi, sizeof(cpi)); 1553 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1554 cpi.ccb_h.func_code = XPT_PATH_INQ; 1555 xpt_action((union ccb *)&cpi); 1556 1557 /* 1558 * The SA driver supports a blocksize, but we don't know the 1559 * blocksize until we media is inserted. So, set a flag to 1560 * indicate that the blocksize is unavailable right now. 1561 */ 1562 cam_periph_unlock(periph); 1563 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1564 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1565 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1566 1567 /* 1568 * Load the default value that is either compiled in, or loaded 1569 * in the global kern.cam.sa.allow_io_split tunable. 1570 */ 1571 softc->allow_io_split = sa_allow_io_split; 1572 1573 /* 1574 * Load a per-instance tunable, if it exists. NOTE that this 1575 * tunable WILL GO AWAY in FreeBSD 11.0. 1576 */ 1577 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 1578 periph->unit_number); 1579 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 1580 1581 /* 1582 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 1583 * the smaller of cpi.maxio or MAXPHYS. 1584 */ 1585 if (cpi.maxio == 0) 1586 softc->maxio = DFLTPHYS; 1587 else if (cpi.maxio > MAXPHYS) 1588 softc->maxio = MAXPHYS; 1589 else 1590 softc->maxio = cpi.maxio; 1591 1592 /* 1593 * Record the controller's maximum I/O size so we can report it to 1594 * the user later. 1595 */ 1596 softc->cpi_maxio = cpi.maxio; 1597 1598 /* 1599 * By default we tell physio that we do not want our I/O split. 1600 * The user needs to have a 1:1 mapping between the size of his 1601 * write to a tape character device and the size of the write 1602 * that actually goes down to the drive. 1603 */ 1604 if (softc->allow_io_split == 0) 1605 softc->si_flags = SI_NOSPLIT; 1606 else 1607 softc->si_flags = 0; 1608 1609 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 1610 1611 /* 1612 * If the SIM supports unmapped I/O, let physio know that we can 1613 * handle unmapped buffers. 1614 */ 1615 if (cpi.hba_misc & PIM_UNMAPPED) 1616 softc->si_flags |= SI_UNMAPPED; 1617 1618 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1619 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1620 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1621 softc->devs.ctl_dev->si_drv1 = periph; 1622 softc->devs.ctl_dev->si_iosize_max = softc->maxio; 1623 softc->devs.ctl_dev->si_flags |= softc->si_flags; 1624 1625 for (i = 0; i < SA_NUM_MODES; i++) { 1626 1627 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1628 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1629 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1630 periph->periph_name, periph->unit_number, i); 1631 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1632 softc->devs.mode_devs[i].r_dev->si_iosize_max = softc->maxio; 1633 softc->devs.mode_devs[i].r_dev->si_flags |= softc->si_flags; 1634 1635 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1636 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1637 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1638 periph->periph_name, periph->unit_number, i); 1639 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1640 softc->devs.mode_devs[i].nr_dev->si_iosize_max = softc->maxio; 1641 softc->devs.mode_devs[i].nr_dev->si_flags |= softc->si_flags; 1642 1643 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1644 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1645 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1646 periph->periph_name, periph->unit_number, i); 1647 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1648 softc->devs.mode_devs[i].er_dev->si_iosize_max = softc->maxio; 1649 softc->devs.mode_devs[i].er_dev->si_flags |= softc->si_flags; 1650 1651 /* 1652 * Make the (well known) aliases for the first mode. 1653 */ 1654 if (i == 0) { 1655 struct cdev *alias; 1656 1657 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1658 "%s%d", periph->periph_name, periph->unit_number); 1659 alias->si_drv1 = periph; 1660 alias->si_iosize_max = softc->maxio; 1661 alias->si_flags |= softc->si_flags; 1662 1663 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1664 "n%s%d", periph->periph_name, periph->unit_number); 1665 alias->si_drv1 = periph; 1666 alias->si_iosize_max = softc->maxio; 1667 alias->si_flags |= softc->si_flags; 1668 1669 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1670 "e%s%d", periph->periph_name, periph->unit_number); 1671 alias->si_drv1 = periph; 1672 alias->si_iosize_max = softc->maxio; 1673 alias->si_flags |= softc->si_flags; 1674 } 1675 } 1676 cam_periph_lock(periph); 1677 1678 /* 1679 * Bump the peripheral refcount for the sysctl thread, in case we 1680 * get invalidated before the thread has a chance to run. 1681 */ 1682 cam_periph_acquire(periph); 1683 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 1684 1685 /* 1686 * Add an async callback so that we get 1687 * notified if this device goes away. 1688 */ 1689 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1690 1691 xpt_announce_periph(periph, NULL); 1692 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 1693 1694 return (CAM_REQ_CMP); 1695 } 1696 1697 static void 1698 sastart(struct cam_periph *periph, union ccb *start_ccb) 1699 { 1700 struct sa_softc *softc; 1701 1702 softc = (struct sa_softc *)periph->softc; 1703 1704 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1705 1706 1707 switch (softc->state) { 1708 case SA_STATE_NORMAL: 1709 { 1710 /* Pull a buffer from the queue and get going on it */ 1711 struct bio *bp; 1712 1713 /* 1714 * See if there is a buf with work for us to do.. 1715 */ 1716 bp = bioq_first(&softc->bio_queue); 1717 if (bp == NULL) { 1718 xpt_release_ccb(start_ccb); 1719 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1720 struct bio *done_bp; 1721 again: 1722 softc->queue_count--; 1723 bioq_remove(&softc->bio_queue, bp); 1724 bp->bio_resid = bp->bio_bcount; 1725 done_bp = bp; 1726 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1727 /* 1728 * We now just clear errors in this case 1729 * and let the residual be the notifier. 1730 */ 1731 bp->bio_error = 0; 1732 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1733 /* 1734 * This can only happen if we're reading 1735 * in fixed length mode. In this case, 1736 * we dump the rest of the list the 1737 * same way. 1738 */ 1739 bp->bio_error = 0; 1740 if (bioq_first(&softc->bio_queue) != NULL) { 1741 biodone(done_bp); 1742 goto again; 1743 } 1744 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1745 bp->bio_error = EIO; 1746 bp->bio_flags |= BIO_ERROR; 1747 } 1748 bp = bioq_first(&softc->bio_queue); 1749 /* 1750 * Only if we have no other buffers queued up 1751 * do we clear the pending error flag. 1752 */ 1753 if (bp == NULL) 1754 softc->flags &= ~SA_FLAG_ERR_PENDING; 1755 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1756 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1757 "%d more buffers queued up\n", 1758 (softc->flags & SA_FLAG_ERR_PENDING), 1759 (bp != NULL)? "not " : " ", softc->queue_count)); 1760 xpt_release_ccb(start_ccb); 1761 biodone(done_bp); 1762 } else { 1763 u_int32_t length; 1764 1765 bioq_remove(&softc->bio_queue, bp); 1766 softc->queue_count--; 1767 1768 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1769 if (softc->blk_shift != 0) { 1770 length = 1771 bp->bio_bcount >> softc->blk_shift; 1772 } else if (softc->media_blksize != 0) { 1773 length = bp->bio_bcount / 1774 softc->media_blksize; 1775 } else { 1776 bp->bio_error = EIO; 1777 xpt_print(periph->path, "zero blocksize" 1778 " for FIXED length writes?\n"); 1779 biodone(bp); 1780 break; 1781 } 1782 #if 0 1783 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1784 ("issuing a %d fixed record %s\n", 1785 length, (bp->bio_cmd == BIO_READ)? "read" : 1786 "write")); 1787 #endif 1788 } else { 1789 length = bp->bio_bcount; 1790 #if 0 1791 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1792 ("issuing a %d variable byte %s\n", 1793 length, (bp->bio_cmd == BIO_READ)? "read" : 1794 "write")); 1795 #endif 1796 } 1797 devstat_start_transaction_bio(softc->device_stats, bp); 1798 /* 1799 * Some people have theorized that we should 1800 * suppress illegal length indication if we are 1801 * running in variable block mode so that we don't 1802 * have to request sense every time our requested 1803 * block size is larger than the written block. 1804 * The residual information from the ccb allows 1805 * us to identify this situation anyway. The only 1806 * problem with this is that we will not get 1807 * information about blocks that are larger than 1808 * our read buffer unless we set the block size 1809 * in the mode page to something other than 0. 1810 * 1811 * I believe that this is a non-issue. If user apps 1812 * don't adjust their read size to match our record 1813 * size, that's just life. Anyway, the typical usage 1814 * would be to issue, e.g., 64KB reads and occasionally 1815 * have to do deal with 512 byte or 1KB intermediate 1816 * records. 1817 */ 1818 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1819 MTIO_DSREG_RD : MTIO_DSREG_WR; 1820 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1821 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 1822 SCSI_RW_READ : SCSI_RW_WRITE) | 1823 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 1824 SCSI_RW_BIO : 0), FALSE, 1825 (softc->flags & SA_FLAG_FIXED) != 0, length, 1826 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 1827 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1828 IO_TIMEOUT); 1829 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1830 start_ccb->ccb_h.ccb_bp = bp; 1831 bp = bioq_first(&softc->bio_queue); 1832 xpt_action(start_ccb); 1833 } 1834 1835 if (bp != NULL) { 1836 /* Have more work to do, so ensure we stay scheduled */ 1837 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1838 } 1839 break; 1840 } 1841 case SA_STATE_ABNORMAL: 1842 default: 1843 panic("state 0x%x in sastart", softc->state); 1844 break; 1845 } 1846 } 1847 1848 1849 static void 1850 sadone(struct cam_periph *periph, union ccb *done_ccb) 1851 { 1852 struct sa_softc *softc; 1853 struct ccb_scsiio *csio; 1854 struct bio *bp; 1855 int error; 1856 1857 softc = (struct sa_softc *)periph->softc; 1858 csio = &done_ccb->csio; 1859 1860 softc->dsreg = MTIO_DSREG_REST; 1861 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1862 error = 0; 1863 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1864 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1865 /* 1866 * A retry was scheduled, so just return. 1867 */ 1868 return; 1869 } 1870 } 1871 1872 if (error == EIO) { 1873 1874 /* 1875 * Catastrophic error. Mark the tape as frozen 1876 * (we no longer know tape position). 1877 * 1878 * Return all queued I/O with EIO, and unfreeze 1879 * our queue so that future transactions that 1880 * attempt to fix this problem can get to the 1881 * device. 1882 * 1883 */ 1884 1885 softc->flags |= SA_FLAG_TAPE_FROZEN; 1886 bioq_flush(&softc->bio_queue, NULL, EIO); 1887 } 1888 if (error != 0) { 1889 bp->bio_resid = bp->bio_bcount; 1890 bp->bio_error = error; 1891 bp->bio_flags |= BIO_ERROR; 1892 /* 1893 * In the error case, position is updated in saerror. 1894 */ 1895 } else { 1896 bp->bio_resid = csio->resid; 1897 bp->bio_error = 0; 1898 if (csio->resid != 0) { 1899 bp->bio_flags |= BIO_ERROR; 1900 } 1901 if (bp->bio_cmd == BIO_WRITE) { 1902 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1903 softc->filemarks = 0; 1904 } 1905 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1906 (softc->blkno != (daddr_t) -1)) { 1907 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1908 u_int32_t l; 1909 if (softc->blk_shift != 0) { 1910 l = bp->bio_bcount >> 1911 softc->blk_shift; 1912 } else { 1913 l = bp->bio_bcount / 1914 softc->media_blksize; 1915 } 1916 softc->blkno += (daddr_t) l; 1917 } else { 1918 softc->blkno++; 1919 } 1920 } 1921 } 1922 /* 1923 * If we had an error (immediate or pending), 1924 * release the device queue now. 1925 */ 1926 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1927 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1928 if (error || bp->bio_resid) { 1929 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1930 ("error %d resid %ld count %ld\n", error, 1931 bp->bio_resid, bp->bio_bcount)); 1932 } 1933 biofinish(bp, softc->device_stats, 0); 1934 xpt_release_ccb(done_ccb); 1935 } 1936 1937 /* 1938 * Mount the tape (make sure it's ready for I/O). 1939 */ 1940 static int 1941 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1942 { 1943 struct sa_softc *softc; 1944 union ccb *ccb; 1945 int error; 1946 1947 /* 1948 * oflags can be checked for 'kind' of open (read-only check) - later 1949 * dev can be checked for a control-mode or compression open - later 1950 */ 1951 UNUSED_PARAMETER(oflags); 1952 UNUSED_PARAMETER(dev); 1953 1954 1955 softc = (struct sa_softc *)periph->softc; 1956 1957 /* 1958 * This should determine if something has happend since the last 1959 * open/mount that would invalidate the mount. We do *not* want 1960 * to retry this command- we just want the status. But we only 1961 * do this if we're mounted already- if we're not mounted, 1962 * we don't care about the unit read state and can instead use 1963 * this opportunity to attempt to reserve the tape unit. 1964 */ 1965 1966 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1967 ccb = cam_periph_getccb(periph, 1); 1968 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1969 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1970 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1971 softc->device_stats); 1972 if (error == ENXIO) { 1973 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1974 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1975 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1976 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1977 softc->device_stats); 1978 } else if (error) { 1979 /* 1980 * We don't need to freeze the tape because we 1981 * will now attempt to rewind/load it. 1982 */ 1983 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1984 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1985 xpt_print(periph->path, 1986 "error %d on TUR in samount\n", error); 1987 } 1988 } 1989 } else { 1990 error = sareservereleaseunit(periph, TRUE); 1991 if (error) { 1992 return (error); 1993 } 1994 ccb = cam_periph_getccb(periph, 1); 1995 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1996 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1997 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1998 softc->device_stats); 1999 } 2000 2001 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2002 struct scsi_read_block_limits_data *rblim = NULL; 2003 int comp_enabled, comp_supported; 2004 u_int8_t write_protect, guessing = 0; 2005 2006 /* 2007 * Clear out old state. 2008 */ 2009 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2010 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 2011 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 2012 softc->filemarks = 0; 2013 2014 /* 2015 * *Very* first off, make sure we're loaded to BOT. 2016 */ 2017 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2018 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2019 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2020 softc->device_stats); 2021 2022 /* 2023 * In case this doesn't work, do a REWIND instead 2024 */ 2025 if (error) { 2026 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2027 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2028 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2029 softc->device_stats); 2030 } 2031 if (error) { 2032 xpt_release_ccb(ccb); 2033 goto exit; 2034 } 2035 2036 /* 2037 * Do a dummy test read to force access to the 2038 * media so that the drive will really know what's 2039 * there. We actually don't really care what the 2040 * blocksize on tape is and don't expect to really 2041 * read a full record. 2042 */ 2043 rblim = (struct scsi_read_block_limits_data *) 2044 malloc(8192, M_SCSISA, M_NOWAIT); 2045 if (rblim == NULL) { 2046 xpt_print(periph->path, "no memory for test read\n"); 2047 xpt_release_ccb(ccb); 2048 error = ENOMEM; 2049 goto exit; 2050 } 2051 2052 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2053 scsi_sa_read_write(&ccb->csio, 0, sadone, 2054 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2055 (void *) rblim, 8192, SSD_FULL_SIZE, 2056 IO_TIMEOUT); 2057 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2058 softc->device_stats); 2059 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2060 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2061 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2062 SF_NO_PRINT | SF_RETRY_UA, 2063 softc->device_stats); 2064 if (error) { 2065 xpt_print(periph->path, 2066 "unable to rewind after test read\n"); 2067 xpt_release_ccb(ccb); 2068 goto exit; 2069 } 2070 } 2071 2072 /* 2073 * Next off, determine block limits. 2074 */ 2075 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2076 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2077 2078 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2079 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2080 2081 xpt_release_ccb(ccb); 2082 2083 if (error != 0) { 2084 /* 2085 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2086 * a MANDATORY command. Anyway- it doesn't matter- 2087 * we can proceed anyway. 2088 */ 2089 softc->blk_gran = 0; 2090 softc->max_blk = ~0; 2091 softc->min_blk = 0; 2092 } else { 2093 if (softc->scsi_rev >= SCSI_REV_SPC) { 2094 softc->blk_gran = RBL_GRAN(rblim); 2095 } else { 2096 softc->blk_gran = 0; 2097 } 2098 /* 2099 * We take max_blk == min_blk to mean a default to 2100 * fixed mode- but note that whatever we get out of 2101 * sagetparams below will actually determine whether 2102 * we are actually *in* fixed mode. 2103 */ 2104 softc->max_blk = scsi_3btoul(rblim->maximum); 2105 softc->min_blk = scsi_2btoul(rblim->minimum); 2106 2107 2108 } 2109 /* 2110 * Next, perform a mode sense to determine 2111 * current density, blocksize, compression etc. 2112 */ 2113 error = sagetparams(periph, SA_PARAM_ALL, 2114 &softc->media_blksize, 2115 &softc->media_density, 2116 &softc->media_numblks, 2117 &softc->buffer_mode, &write_protect, 2118 &softc->speed, &comp_supported, 2119 &comp_enabled, &softc->comp_algorithm, 2120 NULL); 2121 2122 if (error != 0) { 2123 /* 2124 * We could work a little harder here. We could 2125 * adjust our attempts to get information. It 2126 * might be an ancient tape drive. If someone 2127 * nudges us, we'll do that. 2128 */ 2129 goto exit; 2130 } 2131 2132 /* 2133 * If no quirk has determined that this is a device that is 2134 * preferred to be in fixed or variable mode, now is the time 2135 * to find out. 2136 */ 2137 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2138 guessing = 1; 2139 /* 2140 * This could be expensive to find out. Luckily we 2141 * only need to do this once. If we start out in 2142 * 'default' mode, try and set ourselves to one 2143 * of the densities that would determine a wad 2144 * of other stuff. Go from highest to lowest. 2145 */ 2146 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2147 int i; 2148 static u_int8_t ctry[] = { 2149 SCSI_DENSITY_HALFINCH_PE, 2150 SCSI_DENSITY_HALFINCH_6250C, 2151 SCSI_DENSITY_HALFINCH_6250, 2152 SCSI_DENSITY_HALFINCH_1600, 2153 SCSI_DENSITY_HALFINCH_800, 2154 SCSI_DENSITY_QIC_4GB, 2155 SCSI_DENSITY_QIC_2GB, 2156 SCSI_DENSITY_QIC_525_320, 2157 SCSI_DENSITY_QIC_150, 2158 SCSI_DENSITY_QIC_120, 2159 SCSI_DENSITY_QIC_24, 2160 SCSI_DENSITY_QIC_11_9TRK, 2161 SCSI_DENSITY_QIC_11_4TRK, 2162 SCSI_DENSITY_QIC_1320, 2163 SCSI_DENSITY_QIC_3080, 2164 0 2165 }; 2166 for (i = 0; ctry[i]; i++) { 2167 error = sasetparams(periph, 2168 SA_PARAM_DENSITY, 0, ctry[i], 2169 0, SF_NO_PRINT); 2170 if (error == 0) { 2171 softc->media_density = ctry[i]; 2172 break; 2173 } 2174 } 2175 } 2176 switch (softc->media_density) { 2177 case SCSI_DENSITY_QIC_11_4TRK: 2178 case SCSI_DENSITY_QIC_11_9TRK: 2179 case SCSI_DENSITY_QIC_24: 2180 case SCSI_DENSITY_QIC_120: 2181 case SCSI_DENSITY_QIC_150: 2182 case SCSI_DENSITY_QIC_525_320: 2183 case SCSI_DENSITY_QIC_1320: 2184 case SCSI_DENSITY_QIC_3080: 2185 softc->quirks &= ~SA_QUIRK_2FM; 2186 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2187 softc->last_media_blksize = 512; 2188 break; 2189 case SCSI_DENSITY_QIC_4GB: 2190 case SCSI_DENSITY_QIC_2GB: 2191 softc->quirks &= ~SA_QUIRK_2FM; 2192 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2193 softc->last_media_blksize = 1024; 2194 break; 2195 default: 2196 softc->last_media_blksize = 2197 softc->media_blksize; 2198 softc->quirks |= SA_QUIRK_VARIABLE; 2199 break; 2200 } 2201 } 2202 2203 /* 2204 * If no quirk has determined that this is a device that needs 2205 * to have 2 Filemarks at EOD, now is the time to find out. 2206 */ 2207 2208 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2209 switch (softc->media_density) { 2210 case SCSI_DENSITY_HALFINCH_800: 2211 case SCSI_DENSITY_HALFINCH_1600: 2212 case SCSI_DENSITY_HALFINCH_6250: 2213 case SCSI_DENSITY_HALFINCH_6250C: 2214 case SCSI_DENSITY_HALFINCH_PE: 2215 softc->quirks &= ~SA_QUIRK_1FM; 2216 softc->quirks |= SA_QUIRK_2FM; 2217 break; 2218 default: 2219 break; 2220 } 2221 } 2222 2223 /* 2224 * Now validate that some info we got makes sense. 2225 */ 2226 if ((softc->max_blk < softc->media_blksize) || 2227 (softc->min_blk > softc->media_blksize && 2228 softc->media_blksize)) { 2229 xpt_print(periph->path, 2230 "BLOCK LIMITS (%d..%d) could not match current " 2231 "block settings (%d)- adjusting\n", softc->min_blk, 2232 softc->max_blk, softc->media_blksize); 2233 softc->max_blk = softc->min_blk = 2234 softc->media_blksize; 2235 } 2236 2237 /* 2238 * Now put ourselves into the right frame of mind based 2239 * upon quirks... 2240 */ 2241 tryagain: 2242 /* 2243 * If we want to be in FIXED mode and our current blocksize 2244 * is not equal to our last blocksize (if nonzero), try and 2245 * set ourselves to this last blocksize (as the 'preferred' 2246 * block size). The initial quirkmatch at registry sets the 2247 * initial 'last' blocksize. If, for whatever reason, this 2248 * 'last' blocksize is zero, set the blocksize to 512, 2249 * or min_blk if that's larger. 2250 */ 2251 if ((softc->quirks & SA_QUIRK_FIXED) && 2252 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2253 (softc->media_blksize != softc->last_media_blksize)) { 2254 softc->media_blksize = softc->last_media_blksize; 2255 if (softc->media_blksize == 0) { 2256 softc->media_blksize = 512; 2257 if (softc->media_blksize < softc->min_blk) { 2258 softc->media_blksize = softc->min_blk; 2259 } 2260 } 2261 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2262 softc->media_blksize, 0, 0, SF_NO_PRINT); 2263 if (error) { 2264 xpt_print(periph->path, 2265 "unable to set fixed blocksize to %d\n", 2266 softc->media_blksize); 2267 goto exit; 2268 } 2269 } 2270 2271 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2272 (softc->media_blksize != 0)) { 2273 softc->last_media_blksize = softc->media_blksize; 2274 softc->media_blksize = 0; 2275 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2276 0, 0, 0, SF_NO_PRINT); 2277 if (error) { 2278 /* 2279 * If this fails and we were guessing, just 2280 * assume that we got it wrong and go try 2281 * fixed block mode. Don't even check against 2282 * density code at this point. 2283 */ 2284 if (guessing) { 2285 softc->quirks &= ~SA_QUIRK_VARIABLE; 2286 softc->quirks |= SA_QUIRK_FIXED; 2287 if (softc->last_media_blksize == 0) 2288 softc->last_media_blksize = 512; 2289 goto tryagain; 2290 } 2291 xpt_print(periph->path, 2292 "unable to set variable blocksize\n"); 2293 goto exit; 2294 } 2295 } 2296 2297 /* 2298 * Now that we have the current block size, 2299 * set up some parameters for sastart's usage. 2300 */ 2301 if (softc->media_blksize) { 2302 softc->flags |= SA_FLAG_FIXED; 2303 if (powerof2(softc->media_blksize)) { 2304 softc->blk_shift = 2305 ffs(softc->media_blksize) - 1; 2306 softc->blk_mask = softc->media_blksize - 1; 2307 } else { 2308 softc->blk_mask = ~0; 2309 softc->blk_shift = 0; 2310 } 2311 } else { 2312 /* 2313 * The SCSI-3 spec allows 0 to mean "unspecified". 2314 * The SCSI-1 spec allows 0 to mean 'infinite'. 2315 * 2316 * Either works here. 2317 */ 2318 if (softc->max_blk == 0) { 2319 softc->max_blk = ~0; 2320 } 2321 softc->blk_shift = 0; 2322 if (softc->blk_gran != 0) { 2323 softc->blk_mask = softc->blk_gran - 1; 2324 } else { 2325 softc->blk_mask = 0; 2326 } 2327 } 2328 2329 if (write_protect) 2330 softc->flags |= SA_FLAG_TAPE_WP; 2331 2332 if (comp_supported) { 2333 if (softc->saved_comp_algorithm == 0) 2334 softc->saved_comp_algorithm = 2335 softc->comp_algorithm; 2336 softc->flags |= SA_FLAG_COMP_SUPP; 2337 if (comp_enabled) 2338 softc->flags |= SA_FLAG_COMP_ENABLED; 2339 } else 2340 softc->flags |= SA_FLAG_COMP_UNSUPP; 2341 2342 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2343 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2344 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2345 0, 0, SF_NO_PRINT); 2346 if (error == 0) { 2347 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2348 } else { 2349 xpt_print(periph->path, 2350 "unable to set buffered mode\n"); 2351 } 2352 error = 0; /* not an error */ 2353 } 2354 2355 2356 if (error == 0) { 2357 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2358 } 2359 exit: 2360 if (rblim != NULL) 2361 free(rblim, M_SCSISA); 2362 2363 if (error != 0) { 2364 softc->dsreg = MTIO_DSREG_NIL; 2365 } else { 2366 softc->fileno = softc->blkno = 0; 2367 softc->dsreg = MTIO_DSREG_REST; 2368 } 2369 #ifdef SA_1FM_AT_EOD 2370 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2371 softc->quirks |= SA_QUIRK_1FM; 2372 #else 2373 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2374 softc->quirks |= SA_QUIRK_2FM; 2375 #endif 2376 } else 2377 xpt_release_ccb(ccb); 2378 2379 /* 2380 * If we return an error, we're not mounted any more, 2381 * so release any device reservation. 2382 */ 2383 if (error != 0) { 2384 (void) sareservereleaseunit(periph, FALSE); 2385 } else { 2386 /* 2387 * Clear I/O residual. 2388 */ 2389 softc->last_io_resid = 0; 2390 softc->last_ctl_resid = 0; 2391 } 2392 return (error); 2393 } 2394 2395 /* 2396 * How many filemarks do we need to write if we were to terminate the 2397 * tape session right now? Note that this can be a negative number 2398 */ 2399 2400 static int 2401 samarkswanted(struct cam_periph *periph) 2402 { 2403 int markswanted; 2404 struct sa_softc *softc; 2405 2406 softc = (struct sa_softc *)periph->softc; 2407 markswanted = 0; 2408 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2409 markswanted++; 2410 if (softc->quirks & SA_QUIRK_2FM) 2411 markswanted++; 2412 } 2413 markswanted -= softc->filemarks; 2414 return (markswanted); 2415 } 2416 2417 static int 2418 sacheckeod(struct cam_periph *periph) 2419 { 2420 int error; 2421 int markswanted; 2422 2423 markswanted = samarkswanted(periph); 2424 2425 if (markswanted > 0) { 2426 error = sawritefilemarks(periph, markswanted, FALSE); 2427 } else { 2428 error = 0; 2429 } 2430 return (error); 2431 } 2432 2433 static int 2434 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2435 { 2436 static const char *toobig = 2437 "%d-byte tape record bigger than supplied buffer\n"; 2438 struct cam_periph *periph; 2439 struct sa_softc *softc; 2440 struct ccb_scsiio *csio; 2441 struct scsi_sense_data *sense; 2442 uint64_t resid = 0; 2443 int64_t info = 0; 2444 cam_status status; 2445 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 2446 int sense_len; 2447 uint8_t stream_bits; 2448 2449 periph = xpt_path_periph(ccb->ccb_h.path); 2450 softc = (struct sa_softc *)periph->softc; 2451 csio = &ccb->csio; 2452 sense = &csio->sense_data; 2453 sense_len = csio->sense_len - csio->sense_resid; 2454 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 2455 &asc, &ascq, /*show_errors*/ 1); 2456 if (asc != -1 && ascq != -1) 2457 aqvalid = 1; 2458 else 2459 aqvalid = 0; 2460 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 2461 stream_valid = 1; 2462 else 2463 stream_valid = 0; 2464 error = 0; 2465 2466 status = csio->ccb_h.status & CAM_STATUS_MASK; 2467 2468 /* 2469 * Calculate/latch up, any residuals... We do this in a funny 2-step 2470 * so we can print stuff here if we have CAM_DEBUG enabled for this 2471 * unit. 2472 */ 2473 if (status == CAM_SCSI_STATUS_ERROR) { 2474 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 2475 &info) == 0) { 2476 if ((softc->flags & SA_FLAG_FIXED) != 0) 2477 resid *= softc->media_blksize; 2478 } else { 2479 resid = csio->dxfer_len; 2480 info = resid; 2481 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2482 if (softc->media_blksize) 2483 info /= softc->media_blksize; 2484 } 2485 } 2486 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 2487 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2488 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2489 sizeof (struct scsi_sense_data)); 2490 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2491 (int) csio->cdb_len); 2492 softc->last_io_resid = resid; 2493 softc->last_resid_was_io = 1; 2494 } else { 2495 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2496 sizeof (struct scsi_sense_data)); 2497 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2498 (int) csio->cdb_len); 2499 softc->last_ctl_resid = resid; 2500 softc->last_resid_was_io = 0; 2501 } 2502 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2503 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 2504 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2505 sense_key, asc, ascq, status, 2506 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 2507 csio->dxfer_len)); 2508 } else { 2509 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2510 ("Cam Status 0x%x\n", status)); 2511 } 2512 2513 switch (status) { 2514 case CAM_REQ_CMP: 2515 return (0); 2516 case CAM_SCSI_STATUS_ERROR: 2517 /* 2518 * If a read/write command, we handle it here. 2519 */ 2520 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 2521 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2522 break; 2523 } 2524 /* 2525 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2526 * on a non read/write command, we assume it's not an error 2527 * and propagate the residule and return. 2528 */ 2529 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2530 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2531 csio->resid = resid; 2532 QFRLS(ccb); 2533 return (0); 2534 } 2535 /* 2536 * Otherwise, we let the common code handle this. 2537 */ 2538 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2539 2540 /* 2541 * XXX: To Be Fixed 2542 * We cannot depend upon CAM honoring retry counts for these. 2543 */ 2544 case CAM_SCSI_BUS_RESET: 2545 case CAM_BDR_SENT: 2546 if (ccb->ccb_h.retry_count <= 0) { 2547 return (EIO); 2548 } 2549 /* FALLTHROUGH */ 2550 default: 2551 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2552 } 2553 2554 /* 2555 * Handle filemark, end of tape, mismatched record sizes.... 2556 * From this point out, we're only handling read/write cases. 2557 * Handle writes && reads differently. 2558 */ 2559 2560 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2561 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2562 csio->resid = resid; 2563 error = ENOSPC; 2564 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 2565 softc->flags |= SA_FLAG_EOM_PENDING; 2566 /* 2567 * Grotesque as it seems, the few times 2568 * I've actually seen a non-zero resid, 2569 * the tape drive actually lied and had 2570 * written all the data!. 2571 */ 2572 csio->resid = 0; 2573 } 2574 } else { 2575 csio->resid = resid; 2576 if (sense_key == SSD_KEY_BLANK_CHECK) { 2577 if (softc->quirks & SA_QUIRK_1FM) { 2578 error = 0; 2579 softc->flags |= SA_FLAG_EOM_PENDING; 2580 } else { 2581 error = EIO; 2582 } 2583 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 2584 if (softc->flags & SA_FLAG_FIXED) { 2585 error = -1; 2586 softc->flags |= SA_FLAG_EOF_PENDING; 2587 } 2588 /* 2589 * Unconditionally, if we detected a filemark on a read, 2590 * mark that we've run moved a file ahead. 2591 */ 2592 if (softc->fileno != (daddr_t) -1) { 2593 softc->fileno++; 2594 softc->blkno = 0; 2595 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2596 } 2597 } 2598 } 2599 2600 /* 2601 * Incorrect Length usually applies to read, but can apply to writes. 2602 */ 2603 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 2604 if (info < 0) { 2605 xpt_print(csio->ccb_h.path, toobig, 2606 csio->dxfer_len - info); 2607 csio->resid = csio->dxfer_len; 2608 error = EIO; 2609 } else { 2610 csio->resid = resid; 2611 if (softc->flags & SA_FLAG_FIXED) { 2612 softc->flags |= SA_FLAG_EIO_PENDING; 2613 } 2614 /* 2615 * Bump the block number if we hadn't seen a filemark. 2616 * Do this independent of errors (we've moved anyway). 2617 */ 2618 if ((stream_valid == 0) || 2619 (stream_bits & SSD_FILEMARK) == 0) { 2620 if (softc->blkno != (daddr_t) -1) { 2621 softc->blkno++; 2622 csio->ccb_h.ccb_pflags |= 2623 SA_POSITION_UPDATED; 2624 } 2625 } 2626 } 2627 } 2628 2629 if (error <= 0) { 2630 /* 2631 * Unfreeze the queue if frozen as we're not returning anything 2632 * to our waiters that would indicate an I/O error has occurred 2633 * (yet). 2634 */ 2635 QFRLS(ccb); 2636 error = 0; 2637 } 2638 return (error); 2639 } 2640 2641 static int 2642 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2643 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2644 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2645 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2646 sa_comp_t *tcs) 2647 { 2648 union ccb *ccb; 2649 void *mode_buffer; 2650 struct scsi_mode_header_6 *mode_hdr; 2651 struct scsi_mode_blk_desc *mode_blk; 2652 int mode_buffer_len; 2653 struct sa_softc *softc; 2654 u_int8_t cpage; 2655 int error; 2656 cam_status status; 2657 2658 softc = (struct sa_softc *)periph->softc; 2659 ccb = cam_periph_getccb(periph, 1); 2660 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2661 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2662 else 2663 cpage = SA_DATA_COMPRESSION_PAGE; 2664 2665 retry: 2666 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2667 2668 if (params_to_get & SA_PARAM_COMPRESSION) { 2669 if (softc->quirks & SA_QUIRK_NOCOMP) { 2670 *comp_supported = FALSE; 2671 params_to_get &= ~SA_PARAM_COMPRESSION; 2672 } else 2673 mode_buffer_len += sizeof (sa_comp_t); 2674 } 2675 2676 /* XXX Fix M_NOWAIT */ 2677 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2678 if (mode_buffer == NULL) { 2679 xpt_release_ccb(ccb); 2680 return (ENOMEM); 2681 } 2682 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2683 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2684 2685 /* it is safe to retry this */ 2686 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2687 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2688 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2689 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2690 2691 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2692 softc->device_stats); 2693 2694 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2695 2696 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2697 /* 2698 * Hmm. Let's see if we can try another page... 2699 * If we've already done that, give up on compression 2700 * for this device and remember this for the future 2701 * and attempt the request without asking for compression 2702 * info. 2703 */ 2704 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2705 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2706 goto retry; 2707 } 2708 softc->quirks |= SA_QUIRK_NOCOMP; 2709 free(mode_buffer, M_SCSISA); 2710 goto retry; 2711 } else if (status == CAM_SCSI_STATUS_ERROR) { 2712 /* Tell the user about the fatal error. */ 2713 scsi_sense_print(&ccb->csio); 2714 goto sagetparamsexit; 2715 } 2716 2717 /* 2718 * If the user only wants the compression information, and 2719 * the device doesn't send back the block descriptor, it's 2720 * no big deal. If the user wants more than just 2721 * compression, though, and the device doesn't pass back the 2722 * block descriptor, we need to send another mode sense to 2723 * get the block descriptor. 2724 */ 2725 if ((mode_hdr->blk_desc_len == 0) && 2726 (params_to_get & SA_PARAM_COMPRESSION) && 2727 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2728 2729 /* 2730 * Decrease the mode buffer length by the size of 2731 * the compression page, to make sure the data 2732 * there doesn't get overwritten. 2733 */ 2734 mode_buffer_len -= sizeof (sa_comp_t); 2735 2736 /* 2737 * Now move the compression page that we presumably 2738 * got back down the memory chunk a little bit so 2739 * it doesn't get spammed. 2740 */ 2741 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2742 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2743 2744 /* 2745 * Now, we issue another mode sense and just ask 2746 * for the block descriptor, etc. 2747 */ 2748 2749 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2750 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2751 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2752 SCSIOP_TIMEOUT); 2753 2754 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2755 softc->device_stats); 2756 2757 if (error != 0) 2758 goto sagetparamsexit; 2759 } 2760 2761 if (params_to_get & SA_PARAM_BLOCKSIZE) 2762 *blocksize = scsi_3btoul(mode_blk->blklen); 2763 2764 if (params_to_get & SA_PARAM_NUMBLOCKS) 2765 *numblocks = scsi_3btoul(mode_blk->nblocks); 2766 2767 if (params_to_get & SA_PARAM_BUFF_MODE) 2768 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2769 2770 if (params_to_get & SA_PARAM_DENSITY) 2771 *density = mode_blk->density; 2772 2773 if (params_to_get & SA_PARAM_WP) 2774 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2775 2776 if (params_to_get & SA_PARAM_SPEED) 2777 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2778 2779 if (params_to_get & SA_PARAM_COMPRESSION) { 2780 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2781 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2782 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2783 *comp_supported = 2784 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2785 *comp_enabled = 2786 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2787 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2788 } else { 2789 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2790 /* 2791 * We don't really know whether this device supports 2792 * Data Compression if the algorithm field is 2793 * zero. Just say we do. 2794 */ 2795 *comp_supported = TRUE; 2796 *comp_enabled = 2797 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2798 *comp_algorithm = cp->sel_comp_alg; 2799 } 2800 if (tcs != NULL) 2801 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2802 } 2803 2804 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2805 int idx; 2806 char *xyz = mode_buffer; 2807 xpt_print_path(periph->path); 2808 printf("Mode Sense Data="); 2809 for (idx = 0; idx < mode_buffer_len; idx++) 2810 printf(" 0x%02x", xyz[idx] & 0xff); 2811 printf("\n"); 2812 } 2813 2814 sagetparamsexit: 2815 2816 xpt_release_ccb(ccb); 2817 free(mode_buffer, M_SCSISA); 2818 return (error); 2819 } 2820 2821 /* 2822 * The purpose of this function is to set one of four different parameters 2823 * for a tape drive: 2824 * - blocksize 2825 * - density 2826 * - compression / compression algorithm 2827 * - buffering mode 2828 * 2829 * The assumption is that this will be called from saioctl(), and therefore 2830 * from a process context. Thus the waiting malloc calls below. If that 2831 * assumption ever changes, the malloc calls should be changed to be 2832 * NOWAIT mallocs. 2833 * 2834 * Any or all of the four parameters may be set when this function is 2835 * called. It should handle setting more than one parameter at once. 2836 */ 2837 static int 2838 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2839 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2840 u_int32_t sense_flags) 2841 { 2842 struct sa_softc *softc; 2843 u_int32_t current_blocksize; 2844 u_int32_t current_calg; 2845 u_int8_t current_density; 2846 u_int8_t current_speed; 2847 int comp_enabled, comp_supported; 2848 void *mode_buffer; 2849 int mode_buffer_len; 2850 struct scsi_mode_header_6 *mode_hdr; 2851 struct scsi_mode_blk_desc *mode_blk; 2852 sa_comp_t *ccomp, *cpage; 2853 int buff_mode; 2854 union ccb *ccb = NULL; 2855 int error; 2856 2857 softc = (struct sa_softc *)periph->softc; 2858 2859 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2860 if (ccomp == NULL) 2861 return (ENOMEM); 2862 2863 /* 2864 * Since it doesn't make sense to set the number of blocks, or 2865 * write protection, we won't try to get the current value. We 2866 * always want to get the blocksize, so we can set it back to the 2867 * proper value. 2868 */ 2869 error = sagetparams(periph, 2870 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2871 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2872 ¤t_speed, &comp_supported, &comp_enabled, 2873 ¤t_calg, ccomp); 2874 2875 if (error != 0) { 2876 free(ccomp, M_SCSISA); 2877 return (error); 2878 } 2879 2880 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2881 if (params_to_set & SA_PARAM_COMPRESSION) 2882 mode_buffer_len += sizeof (sa_comp_t); 2883 2884 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2885 if (mode_buffer == NULL) { 2886 free(ccomp, M_SCSISA); 2887 return (ENOMEM); 2888 } 2889 2890 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2891 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2892 2893 ccb = cam_periph_getccb(periph, 1); 2894 2895 retry: 2896 2897 if (params_to_set & SA_PARAM_COMPRESSION) { 2898 if (mode_blk) { 2899 cpage = (sa_comp_t *)&mode_blk[1]; 2900 } else { 2901 cpage = (sa_comp_t *)&mode_hdr[1]; 2902 } 2903 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2904 cpage->hdr.pagecode &= ~0x80; 2905 } else 2906 cpage = NULL; 2907 2908 /* 2909 * If the caller wants us to set the blocksize, use the one they 2910 * pass in. Otherwise, use the blocksize we got back from the 2911 * mode select above. 2912 */ 2913 if (mode_blk) { 2914 if (params_to_set & SA_PARAM_BLOCKSIZE) 2915 scsi_ulto3b(blocksize, mode_blk->blklen); 2916 else 2917 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2918 2919 /* 2920 * Set density if requested, else preserve old density. 2921 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2922 * devices, else density we've latched up in our softc. 2923 */ 2924 if (params_to_set & SA_PARAM_DENSITY) { 2925 mode_blk->density = density; 2926 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2927 mode_blk->density = SCSI_SAME_DENSITY; 2928 } else { 2929 mode_blk->density = softc->media_density; 2930 } 2931 } 2932 2933 /* 2934 * For mode selects, these two fields must be zero. 2935 */ 2936 mode_hdr->data_length = 0; 2937 mode_hdr->medium_type = 0; 2938 2939 /* set the speed to the current value */ 2940 mode_hdr->dev_spec = current_speed; 2941 2942 /* if set, set single-initiator buffering mode */ 2943 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2944 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2945 } 2946 2947 if (mode_blk) 2948 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2949 else 2950 mode_hdr->blk_desc_len = 0; 2951 2952 /* 2953 * First, if the user wants us to set the compression algorithm or 2954 * just turn compression on, check to make sure that this drive 2955 * supports compression. 2956 */ 2957 if (params_to_set & SA_PARAM_COMPRESSION) { 2958 /* 2959 * If the compression algorithm is 0, disable compression. 2960 * If the compression algorithm is non-zero, enable 2961 * compression and set the compression type to the 2962 * specified compression algorithm, unless the algorithm is 2963 * MT_COMP_ENABLE. In that case, we look at the 2964 * compression algorithm that is currently set and if it is 2965 * non-zero, we leave it as-is. If it is zero, and we have 2966 * saved a compression algorithm from a time when 2967 * compression was enabled before, set the compression to 2968 * the saved value. 2969 */ 2970 switch (ccomp->hdr.pagecode & ~0x80) { 2971 case SA_DEVICE_CONFIGURATION_PAGE: 2972 { 2973 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2974 if (calg == 0) { 2975 dcp->sel_comp_alg = SA_COMP_NONE; 2976 break; 2977 } 2978 if (calg != MT_COMP_ENABLE) { 2979 dcp->sel_comp_alg = calg; 2980 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2981 softc->saved_comp_algorithm != 0) { 2982 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2983 } 2984 break; 2985 } 2986 case SA_DATA_COMPRESSION_PAGE: 2987 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2988 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2989 if (calg == 0) { 2990 /* 2991 * Disable compression, but leave the 2992 * decompression and the capability bit 2993 * alone. 2994 */ 2995 dcp->dce_and_dcc = SA_DCP_DCC; 2996 dcp->dde_and_red |= SA_DCP_DDE; 2997 break; 2998 } 2999 /* enable compression && decompression */ 3000 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 3001 dcp->dde_and_red |= SA_DCP_DDE; 3002 /* 3003 * If there, use compression algorithm from caller. 3004 * Otherwise, if there's a saved compression algorithm 3005 * and there is no current algorithm, use the saved 3006 * algorithm. Else parrot back what we got and hope 3007 * for the best. 3008 */ 3009 if (calg != MT_COMP_ENABLE) { 3010 scsi_ulto4b(calg, dcp->comp_algorithm); 3011 scsi_ulto4b(calg, dcp->decomp_algorithm); 3012 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 3013 softc->saved_comp_algorithm != 0) { 3014 scsi_ulto4b(softc->saved_comp_algorithm, 3015 dcp->comp_algorithm); 3016 scsi_ulto4b(softc->saved_comp_algorithm, 3017 dcp->decomp_algorithm); 3018 } 3019 break; 3020 } 3021 /* 3022 * Compression does not appear to be supported- 3023 * at least via the DATA COMPRESSION page. It 3024 * would be too much to ask us to believe that 3025 * the page itself is supported, but incorrectly 3026 * reports an ability to manipulate data compression, 3027 * so we'll assume that this device doesn't support 3028 * compression. We can just fall through for that. 3029 */ 3030 /* FALLTHROUGH */ 3031 default: 3032 /* 3033 * The drive doesn't seem to support compression, 3034 * so turn off the set compression bit. 3035 */ 3036 params_to_set &= ~SA_PARAM_COMPRESSION; 3037 xpt_print(periph->path, 3038 "device does not seem to support compression\n"); 3039 3040 /* 3041 * If that was the only thing the user wanted us to set, 3042 * clean up allocated resources and return with 3043 * 'operation not supported'. 3044 */ 3045 if (params_to_set == SA_PARAM_NONE) { 3046 free(mode_buffer, M_SCSISA); 3047 xpt_release_ccb(ccb); 3048 return (ENODEV); 3049 } 3050 3051 /* 3052 * That wasn't the only thing the user wanted us to set. 3053 * So, decrease the stated mode buffer length by the 3054 * size of the compression mode page. 3055 */ 3056 mode_buffer_len -= sizeof(sa_comp_t); 3057 } 3058 } 3059 3060 /* It is safe to retry this operation */ 3061 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 3062 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 3063 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3064 3065 error = cam_periph_runccb(ccb, saerror, 0, 3066 sense_flags, softc->device_stats); 3067 3068 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3069 int idx; 3070 char *xyz = mode_buffer; 3071 xpt_print_path(periph->path); 3072 printf("Err%d, Mode Select Data=", error); 3073 for (idx = 0; idx < mode_buffer_len; idx++) 3074 printf(" 0x%02x", xyz[idx] & 0xff); 3075 printf("\n"); 3076 } 3077 3078 3079 if (error) { 3080 /* 3081 * If we can, try without setting density/blocksize. 3082 */ 3083 if (mode_blk) { 3084 if ((params_to_set & 3085 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 3086 mode_blk = NULL; 3087 goto retry; 3088 } 3089 } else { 3090 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3091 cpage = (sa_comp_t *)&mode_blk[1]; 3092 } 3093 3094 /* 3095 * If we were setting the blocksize, and that failed, we 3096 * want to set it to its original value. If we weren't 3097 * setting the blocksize, we don't want to change it. 3098 */ 3099 scsi_ulto3b(current_blocksize, mode_blk->blklen); 3100 3101 /* 3102 * Set density if requested, else preserve old density. 3103 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 3104 * devices, else density we've latched up in our softc. 3105 */ 3106 if (params_to_set & SA_PARAM_DENSITY) { 3107 mode_blk->density = current_density; 3108 } else if (softc->scsi_rev > SCSI_REV_CCS) { 3109 mode_blk->density = SCSI_SAME_DENSITY; 3110 } else { 3111 mode_blk->density = softc->media_density; 3112 } 3113 3114 if (params_to_set & SA_PARAM_COMPRESSION) 3115 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3116 3117 /* 3118 * The retry count is the only CCB field that might have been 3119 * changed that we care about, so reset it back to 1. 3120 */ 3121 ccb->ccb_h.retry_count = 1; 3122 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3123 softc->device_stats); 3124 } 3125 3126 xpt_release_ccb(ccb); 3127 3128 if (ccomp != NULL) 3129 free(ccomp, M_SCSISA); 3130 3131 if (params_to_set & SA_PARAM_COMPRESSION) { 3132 if (error) { 3133 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3134 /* 3135 * Even if we get an error setting compression, 3136 * do not say that we don't support it. We could 3137 * have been wrong, or it may be media specific. 3138 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3139 */ 3140 softc->saved_comp_algorithm = softc->comp_algorithm; 3141 softc->comp_algorithm = 0; 3142 } else { 3143 softc->flags |= SA_FLAG_COMP_ENABLED; 3144 softc->comp_algorithm = calg; 3145 } 3146 } 3147 3148 free(mode_buffer, M_SCSISA); 3149 return (error); 3150 } 3151 3152 static void 3153 saprevent(struct cam_periph *periph, int action) 3154 { 3155 struct sa_softc *softc; 3156 union ccb *ccb; 3157 int error, sf; 3158 3159 softc = (struct sa_softc *)periph->softc; 3160 3161 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3162 return; 3163 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3164 return; 3165 3166 /* 3167 * We can be quiet about illegal requests. 3168 */ 3169 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3170 sf = 0; 3171 } else 3172 sf = SF_QUIET_IR; 3173 3174 ccb = cam_periph_getccb(periph, 1); 3175 3176 /* It is safe to retry this operation */ 3177 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3178 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3179 3180 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3181 if (error == 0) { 3182 if (action == PR_ALLOW) 3183 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3184 else 3185 softc->flags |= SA_FLAG_TAPE_LOCKED; 3186 } 3187 3188 xpt_release_ccb(ccb); 3189 } 3190 3191 static int 3192 sarewind(struct cam_periph *periph) 3193 { 3194 union ccb *ccb; 3195 struct sa_softc *softc; 3196 int error; 3197 3198 softc = (struct sa_softc *)periph->softc; 3199 3200 ccb = cam_periph_getccb(periph, 1); 3201 3202 /* It is safe to retry this operation */ 3203 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3204 SSD_FULL_SIZE, REWIND_TIMEOUT); 3205 3206 softc->dsreg = MTIO_DSREG_REW; 3207 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3208 softc->dsreg = MTIO_DSREG_REST; 3209 3210 xpt_release_ccb(ccb); 3211 if (error == 0) 3212 softc->fileno = softc->blkno = (daddr_t) 0; 3213 else 3214 softc->fileno = softc->blkno = (daddr_t) -1; 3215 return (error); 3216 } 3217 3218 static int 3219 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3220 { 3221 union ccb *ccb; 3222 struct sa_softc *softc; 3223 int error; 3224 3225 softc = (struct sa_softc *)periph->softc; 3226 3227 ccb = cam_periph_getccb(periph, 1); 3228 3229 /* This cannot be retried */ 3230 3231 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3232 SSD_FULL_SIZE, SPACE_TIMEOUT); 3233 3234 /* 3235 * Clear residual because we will be using it. 3236 */ 3237 softc->last_ctl_resid = 0; 3238 3239 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3240 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3241 softc->dsreg = MTIO_DSREG_REST; 3242 3243 xpt_release_ccb(ccb); 3244 3245 /* 3246 * If a spacing operation has failed, we need to invalidate 3247 * this mount. 3248 * 3249 * If the spacing operation was setmarks or to end of recorded data, 3250 * we no longer know our relative position. 3251 * 3252 * If the spacing operations was spacing files in reverse, we 3253 * take account of the residual, but still check against less 3254 * than zero- if we've gone negative, we must have hit BOT. 3255 * 3256 * If the spacing operations was spacing records in reverse and 3257 * we have a residual, we've either hit BOT or hit a filemark. 3258 * In the former case, we know our new record number (0). In 3259 * the latter case, we have absolutely no idea what the real 3260 * record number is- we've stopped between the end of the last 3261 * record in the previous file and the filemark that stopped 3262 * our spacing backwards. 3263 */ 3264 if (error) { 3265 softc->fileno = softc->blkno = (daddr_t) -1; 3266 } else if (code == SS_SETMARKS || code == SS_EOD) { 3267 softc->fileno = softc->blkno = (daddr_t) -1; 3268 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3269 softc->fileno += (count - softc->last_ctl_resid); 3270 if (softc->fileno < 0) /* we must of hit BOT */ 3271 softc->fileno = 0; 3272 softc->blkno = 0; 3273 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3274 softc->blkno += (count - softc->last_ctl_resid); 3275 if (count < 0) { 3276 if (softc->last_ctl_resid || softc->blkno < 0) { 3277 if (softc->fileno == 0) { 3278 softc->blkno = 0; 3279 } else { 3280 softc->blkno = (daddr_t) -1; 3281 } 3282 } 3283 } 3284 } 3285 return (error); 3286 } 3287 3288 static int 3289 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3290 { 3291 union ccb *ccb; 3292 struct sa_softc *softc; 3293 int error, nwm = 0; 3294 3295 softc = (struct sa_softc *)periph->softc; 3296 if (softc->open_rdonly) 3297 return (EBADF); 3298 3299 ccb = cam_periph_getccb(periph, 1); 3300 /* 3301 * Clear residual because we will be using it. 3302 */ 3303 softc->last_ctl_resid = 0; 3304 3305 softc->dsreg = MTIO_DSREG_FMK; 3306 /* this *must* not be retried */ 3307 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3308 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3309 softc->dsreg = MTIO_DSREG_REST; 3310 3311 3312 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3313 3314 if (error == 0 && nmarks) { 3315 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3316 nwm = nmarks - softc->last_ctl_resid; 3317 softc->filemarks += nwm; 3318 } 3319 3320 xpt_release_ccb(ccb); 3321 3322 /* 3323 * Update relative positions (if we're doing that). 3324 */ 3325 if (error) { 3326 softc->fileno = softc->blkno = (daddr_t) -1; 3327 } else if (softc->fileno != (daddr_t) -1) { 3328 softc->fileno += nwm; 3329 softc->blkno = 0; 3330 } 3331 return (error); 3332 } 3333 3334 static int 3335 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3336 { 3337 struct scsi_tape_position_data loc; 3338 union ccb *ccb; 3339 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3340 int error; 3341 3342 /* 3343 * We try and flush any buffered writes here if we were writing 3344 * and we're trying to get hardware block position. It eats 3345 * up performance substantially, but I'm wary of drive firmware. 3346 * 3347 * I think that *logical* block position is probably okay- 3348 * but hardware block position might have to wait for data 3349 * to hit media to be valid. Caveat Emptor. 3350 */ 3351 3352 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3353 error = sawritefilemarks(periph, 0, 0); 3354 if (error && error != EACCES) 3355 return (error); 3356 } 3357 3358 ccb = cam_periph_getccb(periph, 1); 3359 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3360 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3361 softc->dsreg = MTIO_DSREG_RBSY; 3362 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3363 softc->dsreg = MTIO_DSREG_REST; 3364 3365 if (error == 0) { 3366 if (loc.flags & SA_RPOS_UNCERTAIN) { 3367 error = EINVAL; /* nothing is certain */ 3368 } else { 3369 *blkptr = scsi_4btoul(loc.firstblk); 3370 } 3371 } 3372 3373 xpt_release_ccb(ccb); 3374 return (error); 3375 } 3376 3377 static int 3378 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3379 { 3380 union ccb *ccb; 3381 struct sa_softc *softc; 3382 int error; 3383 3384 /* 3385 * We used to try and flush any buffered writes here. 3386 * Now we push this onto user applications to either 3387 * flush the pending writes themselves (via a zero count 3388 * WRITE FILEMARKS command) or they can trust their tape 3389 * drive to do this correctly for them. 3390 */ 3391 3392 softc = (struct sa_softc *)periph->softc; 3393 ccb = cam_periph_getccb(periph, 1); 3394 3395 3396 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3397 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3398 3399 3400 softc->dsreg = MTIO_DSREG_POS; 3401 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3402 softc->dsreg = MTIO_DSREG_REST; 3403 xpt_release_ccb(ccb); 3404 /* 3405 * Note relative file && block number position as now unknown. 3406 */ 3407 softc->fileno = softc->blkno = (daddr_t) -1; 3408 return (error); 3409 } 3410 3411 static int 3412 saretension(struct cam_periph *periph) 3413 { 3414 union ccb *ccb; 3415 struct sa_softc *softc; 3416 int error; 3417 3418 softc = (struct sa_softc *)periph->softc; 3419 3420 ccb = cam_periph_getccb(periph, 1); 3421 3422 /* It is safe to retry this operation */ 3423 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3424 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3425 3426 softc->dsreg = MTIO_DSREG_TEN; 3427 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3428 softc->dsreg = MTIO_DSREG_REST; 3429 3430 xpt_release_ccb(ccb); 3431 if (error == 0) 3432 softc->fileno = softc->blkno = (daddr_t) 0; 3433 else 3434 softc->fileno = softc->blkno = (daddr_t) -1; 3435 return (error); 3436 } 3437 3438 static int 3439 sareservereleaseunit(struct cam_periph *periph, int reserve) 3440 { 3441 union ccb *ccb; 3442 struct sa_softc *softc; 3443 int error; 3444 3445 softc = (struct sa_softc *)periph->softc; 3446 ccb = cam_periph_getccb(periph, 1); 3447 3448 /* It is safe to retry this operation */ 3449 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3450 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3451 softc->dsreg = MTIO_DSREG_RBSY; 3452 error = cam_periph_runccb(ccb, saerror, 0, 3453 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3454 softc->dsreg = MTIO_DSREG_REST; 3455 xpt_release_ccb(ccb); 3456 3457 /* 3458 * If the error was Illegal Request, then the device doesn't support 3459 * RESERVE/RELEASE. This is not an error. 3460 */ 3461 if (error == EINVAL) { 3462 error = 0; 3463 } 3464 3465 return (error); 3466 } 3467 3468 static int 3469 saloadunload(struct cam_periph *periph, int load) 3470 { 3471 union ccb *ccb; 3472 struct sa_softc *softc; 3473 int error; 3474 3475 softc = (struct sa_softc *)periph->softc; 3476 3477 ccb = cam_periph_getccb(periph, 1); 3478 3479 /* It is safe to retry this operation */ 3480 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3481 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3482 3483 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3484 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3485 softc->dsreg = MTIO_DSREG_REST; 3486 xpt_release_ccb(ccb); 3487 3488 if (error || load == 0) 3489 softc->fileno = softc->blkno = (daddr_t) -1; 3490 else if (error == 0) 3491 softc->fileno = softc->blkno = (daddr_t) 0; 3492 return (error); 3493 } 3494 3495 static int 3496 saerase(struct cam_periph *periph, int longerase) 3497 { 3498 3499 union ccb *ccb; 3500 struct sa_softc *softc; 3501 int error; 3502 3503 softc = (struct sa_softc *)periph->softc; 3504 if (softc->open_rdonly) 3505 return (EBADF); 3506 3507 ccb = cam_periph_getccb(periph, 1); 3508 3509 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3510 SSD_FULL_SIZE, ERASE_TIMEOUT); 3511 3512 softc->dsreg = MTIO_DSREG_ZER; 3513 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3514 softc->dsreg = MTIO_DSREG_REST; 3515 3516 xpt_release_ccb(ccb); 3517 return (error); 3518 } 3519 3520 #endif /* _KERNEL */ 3521 3522 /* 3523 * Read tape block limits command. 3524 */ 3525 void 3526 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3527 void (*cbfcnp)(struct cam_periph *, union ccb *), 3528 u_int8_t tag_action, 3529 struct scsi_read_block_limits_data *rlimit_buf, 3530 u_int8_t sense_len, u_int32_t timeout) 3531 { 3532 struct scsi_read_block_limits *scsi_cmd; 3533 3534 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3535 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3536 sizeof(*scsi_cmd), timeout); 3537 3538 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3539 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3540 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3541 } 3542 3543 void 3544 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3545 void (*cbfcnp)(struct cam_periph *, union ccb *), 3546 u_int8_t tag_action, int readop, int sli, 3547 int fixed, u_int32_t length, u_int8_t *data_ptr, 3548 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3549 { 3550 struct scsi_sa_rw *scsi_cmd; 3551 int read; 3552 3553 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 3554 3555 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3556 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 3557 scsi_cmd->sli_fixed = 0; 3558 if (sli && read) 3559 scsi_cmd->sli_fixed |= SAR_SLI; 3560 if (fixed) 3561 scsi_cmd->sli_fixed |= SARW_FIXED; 3562 scsi_ulto3b(length, scsi_cmd->length); 3563 scsi_cmd->control = 0; 3564 3565 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 3566 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 3567 tag_action, data_ptr, dxfer_len, sense_len, 3568 sizeof(*scsi_cmd), timeout); 3569 } 3570 3571 void 3572 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3573 void (*cbfcnp)(struct cam_periph *, union ccb *), 3574 u_int8_t tag_action, int immediate, int eot, 3575 int reten, int load, u_int8_t sense_len, 3576 u_int32_t timeout) 3577 { 3578 struct scsi_load_unload *scsi_cmd; 3579 3580 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3581 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3582 scsi_cmd->opcode = LOAD_UNLOAD; 3583 if (immediate) 3584 scsi_cmd->immediate = SLU_IMMED; 3585 if (eot) 3586 scsi_cmd->eot_reten_load |= SLU_EOT; 3587 if (reten) 3588 scsi_cmd->eot_reten_load |= SLU_RETEN; 3589 if (load) 3590 scsi_cmd->eot_reten_load |= SLU_LOAD; 3591 3592 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3593 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3594 } 3595 3596 void 3597 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3598 void (*cbfcnp)(struct cam_periph *, union ccb *), 3599 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3600 u_int32_t timeout) 3601 { 3602 struct scsi_rewind *scsi_cmd; 3603 3604 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3605 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3606 scsi_cmd->opcode = REWIND; 3607 if (immediate) 3608 scsi_cmd->immediate = SREW_IMMED; 3609 3610 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3611 0, sense_len, sizeof(*scsi_cmd), timeout); 3612 } 3613 3614 void 3615 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3616 void (*cbfcnp)(struct cam_periph *, union ccb *), 3617 u_int8_t tag_action, scsi_space_code code, 3618 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3619 { 3620 struct scsi_space *scsi_cmd; 3621 3622 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3623 scsi_cmd->opcode = SPACE; 3624 scsi_cmd->code = code; 3625 scsi_ulto3b(count, scsi_cmd->count); 3626 scsi_cmd->control = 0; 3627 3628 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3629 0, sense_len, sizeof(*scsi_cmd), timeout); 3630 } 3631 3632 void 3633 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3634 void (*cbfcnp)(struct cam_periph *, union ccb *), 3635 u_int8_t tag_action, int immediate, int setmark, 3636 u_int32_t num_marks, u_int8_t sense_len, 3637 u_int32_t timeout) 3638 { 3639 struct scsi_write_filemarks *scsi_cmd; 3640 3641 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3642 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3643 scsi_cmd->opcode = WRITE_FILEMARKS; 3644 if (immediate) 3645 scsi_cmd->byte2 |= SWFMRK_IMMED; 3646 if (setmark) 3647 scsi_cmd->byte2 |= SWFMRK_WSMK; 3648 3649 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3650 3651 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3652 0, sense_len, sizeof(*scsi_cmd), timeout); 3653 } 3654 3655 /* 3656 * The reserve and release unit commands differ only by their opcodes. 3657 */ 3658 void 3659 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3660 void (*cbfcnp)(struct cam_periph *, union ccb *), 3661 u_int8_t tag_action, int third_party, 3662 int third_party_id, u_int8_t sense_len, 3663 u_int32_t timeout, int reserve) 3664 { 3665 struct scsi_reserve_release_unit *scsi_cmd; 3666 3667 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3668 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3669 3670 if (reserve) 3671 scsi_cmd->opcode = RESERVE_UNIT; 3672 else 3673 scsi_cmd->opcode = RELEASE_UNIT; 3674 3675 if (third_party) { 3676 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3677 scsi_cmd->lun_thirdparty |= 3678 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3679 } 3680 3681 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3682 0, sense_len, sizeof(*scsi_cmd), timeout); 3683 } 3684 3685 void 3686 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3687 void (*cbfcnp)(struct cam_periph *, union ccb *), 3688 u_int8_t tag_action, int immediate, int long_erase, 3689 u_int8_t sense_len, u_int32_t timeout) 3690 { 3691 struct scsi_erase *scsi_cmd; 3692 3693 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3694 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3695 3696 scsi_cmd->opcode = ERASE; 3697 3698 if (immediate) 3699 scsi_cmd->lun_imm_long |= SE_IMMED; 3700 3701 if (long_erase) 3702 scsi_cmd->lun_imm_long |= SE_LONG; 3703 3704 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3705 0, sense_len, sizeof(*scsi_cmd), timeout); 3706 } 3707 3708 /* 3709 * Read Tape Position command. 3710 */ 3711 void 3712 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3713 void (*cbfcnp)(struct cam_periph *, union ccb *), 3714 u_int8_t tag_action, int hardsoft, 3715 struct scsi_tape_position_data *sbp, 3716 u_int8_t sense_len, u_int32_t timeout) 3717 { 3718 struct scsi_tape_read_position *scmd; 3719 3720 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3721 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3722 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3723 bzero(scmd, sizeof(*scmd)); 3724 scmd->opcode = READ_POSITION; 3725 scmd->byte1 = hardsoft; 3726 } 3727 3728 /* 3729 * Set Tape Position command. 3730 */ 3731 void 3732 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3733 void (*cbfcnp)(struct cam_periph *, union ccb *), 3734 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3735 u_int8_t sense_len, u_int32_t timeout) 3736 { 3737 struct scsi_tape_locate *scmd; 3738 3739 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3740 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3741 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3742 bzero(scmd, sizeof(*scmd)); 3743 scmd->opcode = LOCATE; 3744 if (hardsoft) 3745 scmd->byte1 |= SA_SPOS_BT; 3746 scsi_ulto4b(blkno, scmd->blkaddr); 3747 } 3748