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 #define SA_CCB_BUFFER_IO 0x0 117 #define SA_CCB_TYPEMASK 0x1 118 #define SA_POSITION_UPDATED 0x2 119 120 #define Set_CCB_Type(x, type) \ 121 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 122 x->ccb_h.ccb_pflags |= type 123 124 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 125 126 127 128 typedef enum { 129 SA_FLAG_OPEN = 0x0001, 130 SA_FLAG_FIXED = 0x0002, 131 SA_FLAG_TAPE_LOCKED = 0x0004, 132 SA_FLAG_TAPE_MOUNTED = 0x0008, 133 SA_FLAG_TAPE_WP = 0x0010, 134 SA_FLAG_TAPE_WRITTEN = 0x0020, 135 SA_FLAG_EOM_PENDING = 0x0040, 136 SA_FLAG_EIO_PENDING = 0x0080, 137 SA_FLAG_EOF_PENDING = 0x0100, 138 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 139 SA_FLAG_EOF_PENDING), 140 SA_FLAG_INVALID = 0x0200, 141 SA_FLAG_COMP_ENABLED = 0x0400, 142 SA_FLAG_COMP_SUPP = 0x0800, 143 SA_FLAG_COMP_UNSUPP = 0x1000, 144 SA_FLAG_TAPE_FROZEN = 0x2000 145 } sa_flags; 146 147 typedef enum { 148 SA_MODE_REWIND = 0x00, 149 SA_MODE_NOREWIND = 0x01, 150 SA_MODE_OFFLINE = 0x02 151 } sa_mode; 152 153 typedef enum { 154 SA_PARAM_NONE = 0x00, 155 SA_PARAM_BLOCKSIZE = 0x01, 156 SA_PARAM_DENSITY = 0x02, 157 SA_PARAM_COMPRESSION = 0x04, 158 SA_PARAM_BUFF_MODE = 0x08, 159 SA_PARAM_NUMBLOCKS = 0x10, 160 SA_PARAM_WP = 0x20, 161 SA_PARAM_SPEED = 0x40, 162 SA_PARAM_ALL = 0x7f 163 } sa_params; 164 165 typedef enum { 166 SA_QUIRK_NONE = 0x00, 167 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 168 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 169 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 170 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 171 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 172 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 173 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 174 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 175 } sa_quirks; 176 177 #define SA_QUIRK_BIT_STRING \ 178 "\020" \ 179 "\001NOCOMP" \ 180 "\002FIXED" \ 181 "\003VARIABLE" \ 182 "\0042FM" \ 183 "\0051FM" \ 184 "\006NODREAD" \ 185 "\007NO_MODESEL" \ 186 "\010NO_CPAGE" 187 188 #define SAMODE(z) (dev2unit(z) & 0x3) 189 #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) 190 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 191 192 #define SA_NOT_CTLDEV 0 193 #define SA_CTLDEV 1 194 195 #define SA_ATYPE_R 0 196 #define SA_ATYPE_NR 1 197 #define SA_ATYPE_ER 2 198 199 #define SAMINOR(ctl, mode, access) \ 200 ((ctl << 4) | (mode << 2) | (access & 0x3)) 201 202 #define SA_NUM_MODES 4 203 struct sa_devs { 204 struct cdev *ctl_dev; 205 struct sa_mode_devs { 206 struct cdev *r_dev; 207 struct cdev *nr_dev; 208 struct cdev *er_dev; 209 } mode_devs[SA_NUM_MODES]; 210 }; 211 212 struct sa_softc { 213 sa_state state; 214 sa_flags flags; 215 sa_quirks quirks; 216 u_int si_flags; 217 struct bio_queue_head bio_queue; 218 int queue_count; 219 struct devstat *device_stats; 220 struct sa_devs devs; 221 int blk_gran; 222 int blk_mask; 223 int blk_shift; 224 u_int32_t max_blk; 225 u_int32_t min_blk; 226 u_int32_t maxio; 227 u_int32_t cpi_maxio; 228 int allow_io_split; 229 u_int32_t comp_algorithm; 230 u_int32_t saved_comp_algorithm; 231 u_int32_t media_blksize; 232 u_int32_t last_media_blksize; 233 u_int32_t media_numblks; 234 u_int8_t media_density; 235 u_int8_t speed; 236 u_int8_t scsi_rev; 237 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 238 int buffer_mode; 239 int filemarks; 240 union ccb saved_ccb; 241 int last_resid_was_io; 242 243 /* 244 * Relative to BOT Location. 245 */ 246 daddr_t fileno; 247 daddr_t blkno; 248 249 /* 250 * Latched Error Info 251 */ 252 struct { 253 struct scsi_sense_data _last_io_sense; 254 u_int64_t _last_io_resid; 255 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 256 struct scsi_sense_data _last_ctl_sense; 257 u_int64_t _last_ctl_resid; 258 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 259 #define last_io_sense errinfo._last_io_sense 260 #define last_io_resid errinfo._last_io_resid 261 #define last_io_cdb errinfo._last_io_cdb 262 #define last_ctl_sense errinfo._last_ctl_sense 263 #define last_ctl_resid errinfo._last_ctl_resid 264 #define last_ctl_cdb errinfo._last_ctl_cdb 265 } errinfo; 266 /* 267 * Misc other flags/state 268 */ 269 u_int32_t 270 : 29, 271 open_rdonly : 1, /* open read-only */ 272 open_pending_mount : 1, /* open pending mount */ 273 ctrl_mode : 1; /* control device open */ 274 275 struct task sysctl_task; 276 struct sysctl_ctx_list sysctl_ctx; 277 struct sysctl_oid *sysctl_tree; 278 }; 279 280 struct sa_quirk_entry { 281 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 282 sa_quirks quirks; /* specific quirk type */ 283 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 284 }; 285 286 static struct sa_quirk_entry sa_quirk_table[] = 287 { 288 { 289 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 290 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 291 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 292 }, 293 { 294 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 295 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 296 }, 297 { 298 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 299 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 300 }, 301 { 302 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 303 "Python*", "*"}, SA_QUIRK_NODREAD, 0 304 }, 305 { 306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 307 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 308 }, 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 311 "VIPER 2525 25462", "-011"}, 312 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 313 }, 314 { 315 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 316 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 317 }, 318 #if 0 319 { 320 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 321 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 322 }, 323 #endif 324 { 325 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 326 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 327 }, 328 { 329 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 330 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 331 }, 332 { 333 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 334 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 335 }, 336 { 337 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 338 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 339 }, 340 { 341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 342 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 343 }, 344 { 345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 346 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 347 }, 348 { /* jreynold@primenet.com */ 349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 350 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 351 }, 352 { /* mike@sentex.net */ 353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 354 "STT20000*", "*"}, SA_QUIRK_1FM, 0 355 }, 356 { 357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 358 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 359 }, 360 { 361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 362 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 363 }, 364 { 365 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 366 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 367 }, 368 { 369 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 370 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 371 }, 372 { 373 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 374 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 375 }, 376 { 377 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 378 " SLR*", "*"}, SA_QUIRK_1FM, 0 379 }, 380 { 381 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 382 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 383 }, 384 { 385 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 386 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 387 } 388 }; 389 390 static d_open_t saopen; 391 static d_close_t saclose; 392 static d_strategy_t sastrategy; 393 static d_ioctl_t saioctl; 394 static periph_init_t sainit; 395 static periph_ctor_t saregister; 396 static periph_oninv_t saoninvalidate; 397 static periph_dtor_t sacleanup; 398 static periph_start_t sastart; 399 static void saasync(void *callback_arg, u_int32_t code, 400 struct cam_path *path, void *arg); 401 static void sadone(struct cam_periph *periph, 402 union ccb *start_ccb); 403 static int saerror(union ccb *ccb, u_int32_t cam_flags, 404 u_int32_t sense_flags); 405 static int samarkswanted(struct cam_periph *); 406 static int sacheckeod(struct cam_periph *periph); 407 static int sagetparams(struct cam_periph *periph, 408 sa_params params_to_get, 409 u_int32_t *blocksize, u_int8_t *density, 410 u_int32_t *numblocks, int *buff_mode, 411 u_int8_t *write_protect, u_int8_t *speed, 412 int *comp_supported, int *comp_enabled, 413 u_int32_t *comp_algorithm, 414 sa_comp_t *comp_page); 415 static int sasetparams(struct cam_periph *periph, 416 sa_params params_to_set, 417 u_int32_t blocksize, u_int8_t density, 418 u_int32_t comp_algorithm, 419 u_int32_t sense_flags); 420 static void saprevent(struct cam_periph *periph, int action); 421 static int sarewind(struct cam_periph *periph); 422 static int saspace(struct cam_periph *periph, int count, 423 scsi_space_code code); 424 static int samount(struct cam_periph *, int, struct cdev *); 425 static int saretension(struct cam_periph *periph); 426 static int sareservereleaseunit(struct cam_periph *periph, 427 int reserve); 428 static int saloadunload(struct cam_periph *periph, int load); 429 static int saerase(struct cam_periph *periph, int longerase); 430 static int sawritefilemarks(struct cam_periph *periph, 431 int nmarks, int setmarks); 432 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 433 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 434 435 436 #ifndef SA_DEFAULT_IO_SPLIT 437 #define SA_DEFAULT_IO_SPLIT 0 438 #endif 439 440 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 441 442 /* 443 * Tunable to allow the user to set a global allow_io_split value. Note 444 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 445 * is bad behavior, because it hides the true tape block size from the 446 * application. 447 */ 448 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 449 "CAM Sequential Access Tape Driver"); 450 SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN, 451 &sa_allow_io_split, 0, "Default I/O split value"); 452 453 static struct periph_driver sadriver = 454 { 455 sainit, "sa", 456 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 457 }; 458 459 PERIPHDRIVER_DECLARE(sa, sadriver); 460 461 /* For 2.2-stable support */ 462 #ifndef D_TAPE 463 #define D_TAPE 0 464 #endif 465 466 467 static struct cdevsw sa_cdevsw = { 468 .d_version = D_VERSION, 469 .d_open = saopen, 470 .d_close = saclose, 471 .d_read = physread, 472 .d_write = physwrite, 473 .d_ioctl = saioctl, 474 .d_strategy = sastrategy, 475 .d_name = "sa", 476 .d_flags = D_TAPE, 477 }; 478 479 static int 480 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 481 { 482 struct cam_periph *periph; 483 struct sa_softc *softc; 484 int error; 485 486 periph = (struct cam_periph *)dev->si_drv1; 487 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 488 return (ENXIO); 489 } 490 491 cam_periph_lock(periph); 492 493 softc = (struct sa_softc *)periph->softc; 494 495 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 496 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 497 498 if (SA_IS_CTRL(dev)) { 499 softc->ctrl_mode = 1; 500 cam_periph_unlock(periph); 501 return (0); 502 } 503 504 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 505 cam_periph_unlock(periph); 506 cam_periph_release(periph); 507 return (error); 508 } 509 510 if (softc->flags & SA_FLAG_OPEN) { 511 error = EBUSY; 512 } else if (softc->flags & SA_FLAG_INVALID) { 513 error = ENXIO; 514 } else { 515 /* 516 * Preserve whether this is a read_only open. 517 */ 518 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 519 520 /* 521 * The function samount ensures media is loaded and ready. 522 * It also does a device RESERVE if the tape isn't yet mounted. 523 * 524 * If the mount fails and this was a non-blocking open, 525 * make this a 'open_pending_mount' action. 526 */ 527 error = samount(periph, flags, dev); 528 if (error && (flags & O_NONBLOCK)) { 529 softc->flags |= SA_FLAG_OPEN; 530 softc->open_pending_mount = 1; 531 cam_periph_unhold(periph); 532 cam_periph_unlock(periph); 533 return (0); 534 } 535 } 536 537 if (error) { 538 cam_periph_unhold(periph); 539 cam_periph_unlock(periph); 540 cam_periph_release(periph); 541 return (error); 542 } 543 544 saprevent(periph, PR_PREVENT); 545 softc->flags |= SA_FLAG_OPEN; 546 547 cam_periph_unhold(periph); 548 cam_periph_unlock(periph); 549 return (error); 550 } 551 552 static int 553 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 554 { 555 struct cam_periph *periph; 556 struct sa_softc *softc; 557 int mode, error, writing, tmp; 558 int closedbits = SA_FLAG_OPEN; 559 560 mode = SAMODE(dev); 561 periph = (struct cam_periph *)dev->si_drv1; 562 if (periph == NULL) 563 return (ENXIO); 564 565 cam_periph_lock(periph); 566 567 softc = (struct sa_softc *)periph->softc; 568 569 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 570 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 571 572 573 softc->open_rdonly = 0; 574 if (SA_IS_CTRL(dev)) { 575 softc->ctrl_mode = 0; 576 cam_periph_unlock(periph); 577 cam_periph_release(periph); 578 return (0); 579 } 580 581 if (softc->open_pending_mount) { 582 softc->flags &= ~SA_FLAG_OPEN; 583 softc->open_pending_mount = 0; 584 cam_periph_unlock(periph); 585 cam_periph_release(periph); 586 return (0); 587 } 588 589 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 590 cam_periph_unlock(periph); 591 return (error); 592 } 593 594 /* 595 * Were we writing the tape? 596 */ 597 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 598 599 /* 600 * See whether or not we need to write filemarks. If this 601 * fails, we probably have to assume we've lost tape 602 * position. 603 */ 604 error = sacheckeod(periph); 605 if (error) { 606 xpt_print(periph->path, 607 "failed to write terminating filemark(s)\n"); 608 softc->flags |= SA_FLAG_TAPE_FROZEN; 609 } 610 611 /* 612 * Whatever we end up doing, allow users to eject tapes from here on. 613 */ 614 saprevent(periph, PR_ALLOW); 615 616 /* 617 * Decide how to end... 618 */ 619 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 620 closedbits |= SA_FLAG_TAPE_FROZEN; 621 } else switch (mode) { 622 case SA_MODE_OFFLINE: 623 /* 624 * An 'offline' close is an unconditional release of 625 * frozen && mount conditions, irrespective of whether 626 * these operations succeeded. The reason for this is 627 * to allow at least some kind of programmatic way 628 * around our state getting all fouled up. If somebody 629 * issues an 'offline' command, that will be allowed 630 * to clear state. 631 */ 632 (void) sarewind(periph); 633 (void) saloadunload(periph, FALSE); 634 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 635 break; 636 case SA_MODE_REWIND: 637 /* 638 * If the rewind fails, return an error- if anyone cares, 639 * but not overwriting any previous error. 640 * 641 * We don't clear the notion of mounted here, but we do 642 * clear the notion of frozen if we successfully rewound. 643 */ 644 tmp = sarewind(periph); 645 if (tmp) { 646 if (error != 0) 647 error = tmp; 648 } else { 649 closedbits |= SA_FLAG_TAPE_FROZEN; 650 } 651 break; 652 case SA_MODE_NOREWIND: 653 /* 654 * If we're not rewinding/unloading the tape, find out 655 * whether we need to back up over one of two filemarks 656 * we wrote (if we wrote two filemarks) so that appends 657 * from this point on will be sane. 658 */ 659 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 660 tmp = saspace(periph, -1, SS_FILEMARKS); 661 if (tmp) { 662 xpt_print(periph->path, "unable to backspace " 663 "over one of double filemarks at end of " 664 "tape\n"); 665 xpt_print(periph->path, "it is possible that " 666 "this device needs a SA_QUIRK_1FM quirk set" 667 "for it\n"); 668 softc->flags |= SA_FLAG_TAPE_FROZEN; 669 } 670 } 671 break; 672 default: 673 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 674 /* NOTREACHED */ 675 break; 676 } 677 678 /* 679 * We wish to note here that there are no more filemarks to be written. 680 */ 681 softc->filemarks = 0; 682 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 683 684 /* 685 * And we are no longer open for business. 686 */ 687 softc->flags &= ~closedbits; 688 689 /* 690 * Inform users if tape state if frozen.... 691 */ 692 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 693 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 694 "REWIND or MTEOM command to clear this state.\n"); 695 } 696 697 /* release the device if it is no longer mounted */ 698 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 699 sareservereleaseunit(periph, FALSE); 700 701 cam_periph_unhold(periph); 702 cam_periph_unlock(periph); 703 cam_periph_release(periph); 704 705 return (error); 706 } 707 708 /* 709 * Actually translate the requested transfer into one the physical driver 710 * can understand. The transfer is described by a buf and will include 711 * only one physical transfer. 712 */ 713 static void 714 sastrategy(struct bio *bp) 715 { 716 struct cam_periph *periph; 717 struct sa_softc *softc; 718 719 bp->bio_resid = bp->bio_bcount; 720 if (SA_IS_CTRL(bp->bio_dev)) { 721 biofinish(bp, NULL, EINVAL); 722 return; 723 } 724 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 725 if (periph == NULL) { 726 biofinish(bp, NULL, ENXIO); 727 return; 728 } 729 cam_periph_lock(periph); 730 731 softc = (struct sa_softc *)periph->softc; 732 733 if (softc->flags & SA_FLAG_INVALID) { 734 cam_periph_unlock(periph); 735 biofinish(bp, NULL, ENXIO); 736 return; 737 } 738 739 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 740 cam_periph_unlock(periph); 741 biofinish(bp, NULL, EPERM); 742 return; 743 } 744 745 /* 746 * This should actually never occur as the write(2) 747 * system call traps attempts to write to a read-only 748 * file descriptor. 749 */ 750 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 751 cam_periph_unlock(periph); 752 biofinish(bp, NULL, EBADF); 753 return; 754 } 755 756 if (softc->open_pending_mount) { 757 int error = samount(periph, 0, bp->bio_dev); 758 if (error) { 759 cam_periph_unlock(periph); 760 biofinish(bp, NULL, ENXIO); 761 return; 762 } 763 saprevent(periph, PR_PREVENT); 764 softc->open_pending_mount = 0; 765 } 766 767 768 /* 769 * If it's a null transfer, return immediately 770 */ 771 if (bp->bio_bcount == 0) { 772 cam_periph_unlock(periph); 773 biodone(bp); 774 return; 775 } 776 777 /* valid request? */ 778 if (softc->flags & SA_FLAG_FIXED) { 779 /* 780 * Fixed block device. The byte count must 781 * be a multiple of our block size. 782 */ 783 if (((softc->blk_mask != ~0) && 784 ((bp->bio_bcount & softc->blk_mask) != 0)) || 785 ((softc->blk_mask == ~0) && 786 ((bp->bio_bcount % softc->min_blk) != 0))) { 787 xpt_print(periph->path, "Invalid request. Fixed block " 788 "device requests must be a multiple of %d bytes\n", 789 softc->min_blk); 790 cam_periph_unlock(periph); 791 biofinish(bp, NULL, EINVAL); 792 return; 793 } 794 } else if ((bp->bio_bcount > softc->max_blk) || 795 (bp->bio_bcount < softc->min_blk) || 796 (bp->bio_bcount & softc->blk_mask) != 0) { 797 798 xpt_print_path(periph->path); 799 printf("Invalid request. Variable block " 800 "device requests must be "); 801 if (softc->blk_mask != 0) { 802 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 803 } 804 printf("between %d and %d bytes\n", softc->min_blk, 805 softc->max_blk); 806 cam_periph_unlock(periph); 807 biofinish(bp, NULL, EINVAL); 808 return; 809 } 810 811 /* 812 * Place it at the end of the queue. 813 */ 814 bioq_insert_tail(&softc->bio_queue, bp); 815 softc->queue_count++; 816 #if 0 817 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 818 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 819 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 820 (bp->bio_cmd == BIO_READ)? "read" : "write")); 821 #endif 822 if (softc->queue_count > 1) { 823 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 824 ("sastrategy: queue count now %d\n", softc->queue_count)); 825 } 826 827 /* 828 * Schedule ourselves for performing the work. 829 */ 830 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 831 cam_periph_unlock(periph); 832 833 return; 834 } 835 836 837 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 838 if (softc->open_pending_mount) { \ 839 error = samount(periph, 0, dev); \ 840 if (error) { \ 841 break; \ 842 } \ 843 saprevent(periph, PR_PREVENT); \ 844 softc->open_pending_mount = 0; \ 845 } 846 847 static int 848 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 849 { 850 struct cam_periph *periph; 851 struct sa_softc *softc; 852 scsi_space_code spaceop; 853 int didlockperiph = 0; 854 int mode; 855 int error = 0; 856 857 mode = SAMODE(dev); 858 error = 0; /* shut up gcc */ 859 spaceop = 0; /* shut up gcc */ 860 861 periph = (struct cam_periph *)dev->si_drv1; 862 if (periph == NULL) 863 return (ENXIO); 864 865 cam_periph_lock(periph); 866 softc = (struct sa_softc *)periph->softc; 867 868 /* 869 * Check for control mode accesses. We allow MTIOCGET and 870 * MTIOCERRSTAT (but need to be the only one open in order 871 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 872 * and MTCOMP (but need to be the only one accessing this 873 * device to run those). 874 */ 875 876 if (SA_IS_CTRL(dev)) { 877 switch (cmd) { 878 case MTIOCGETEOTMODEL: 879 case MTIOCGET: 880 break; 881 case MTIOCERRSTAT: 882 /* 883 * If the periph isn't already locked, lock it 884 * so our MTIOCERRSTAT can reset latched error stats. 885 * 886 * If the periph is already locked, skip it because 887 * we're just getting status and it'll be up to the 888 * other thread that has this device open to do 889 * an MTIOCERRSTAT that would clear latched status. 890 */ 891 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 892 error = cam_periph_hold(periph, PRIBIO|PCATCH); 893 if (error != 0) { 894 cam_periph_unlock(periph); 895 return (error); 896 } 897 didlockperiph = 1; 898 } 899 break; 900 901 case MTIOCTOP: 902 { 903 struct mtop *mt = (struct mtop *) arg; 904 905 /* 906 * Check to make sure it's an OP we can perform 907 * with no media inserted. 908 */ 909 switch (mt->mt_op) { 910 case MTSETBSIZ: 911 case MTSETDNSTY: 912 case MTCOMP: 913 mt = NULL; 914 /* FALLTHROUGH */ 915 default: 916 break; 917 } 918 if (mt != NULL) { 919 break; 920 } 921 /* FALLTHROUGH */ 922 } 923 case MTIOCSETEOTMODEL: 924 /* 925 * We need to acquire the peripheral here rather 926 * than at open time because we are sharing writable 927 * access to data structures. 928 */ 929 error = cam_periph_hold(periph, PRIBIO|PCATCH); 930 if (error != 0) { 931 cam_periph_unlock(periph); 932 return (error); 933 } 934 didlockperiph = 1; 935 break; 936 937 default: 938 cam_periph_unlock(periph); 939 return (EINVAL); 940 } 941 } 942 943 /* 944 * Find the device that the user is talking about 945 */ 946 switch (cmd) { 947 case MTIOCGET: 948 { 949 struct mtget *g = (struct mtget *)arg; 950 951 /* 952 * If this isn't the control mode device, actually go out 953 * and ask the drive again what it's set to. 954 */ 955 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 956 u_int8_t write_protect; 957 int comp_enabled, comp_supported; 958 error = sagetparams(periph, SA_PARAM_ALL, 959 &softc->media_blksize, &softc->media_density, 960 &softc->media_numblks, &softc->buffer_mode, 961 &write_protect, &softc->speed, &comp_supported, 962 &comp_enabled, &softc->comp_algorithm, NULL); 963 if (error) 964 break; 965 if (write_protect) 966 softc->flags |= SA_FLAG_TAPE_WP; 967 else 968 softc->flags &= ~SA_FLAG_TAPE_WP; 969 softc->flags &= ~(SA_FLAG_COMP_SUPP| 970 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 971 if (comp_supported) { 972 if (softc->saved_comp_algorithm == 0) 973 softc->saved_comp_algorithm = 974 softc->comp_algorithm; 975 softc->flags |= SA_FLAG_COMP_SUPP; 976 if (comp_enabled) 977 softc->flags |= SA_FLAG_COMP_ENABLED; 978 } else 979 softc->flags |= SA_FLAG_COMP_UNSUPP; 980 } 981 bzero(g, sizeof(struct mtget)); 982 g->mt_type = MT_ISAR; 983 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 984 g->mt_comp = MT_COMP_UNSUPP; 985 g->mt_comp0 = MT_COMP_UNSUPP; 986 g->mt_comp1 = MT_COMP_UNSUPP; 987 g->mt_comp2 = MT_COMP_UNSUPP; 988 g->mt_comp3 = MT_COMP_UNSUPP; 989 } else { 990 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 991 g->mt_comp = MT_COMP_DISABLED; 992 } else { 993 g->mt_comp = softc->comp_algorithm; 994 } 995 g->mt_comp0 = softc->comp_algorithm; 996 g->mt_comp1 = softc->comp_algorithm; 997 g->mt_comp2 = softc->comp_algorithm; 998 g->mt_comp3 = softc->comp_algorithm; 999 } 1000 g->mt_density = softc->media_density; 1001 g->mt_density0 = softc->media_density; 1002 g->mt_density1 = softc->media_density; 1003 g->mt_density2 = softc->media_density; 1004 g->mt_density3 = softc->media_density; 1005 g->mt_blksiz = softc->media_blksize; 1006 g->mt_blksiz0 = softc->media_blksize; 1007 g->mt_blksiz1 = softc->media_blksize; 1008 g->mt_blksiz2 = softc->media_blksize; 1009 g->mt_blksiz3 = softc->media_blksize; 1010 g->mt_fileno = softc->fileno; 1011 g->mt_blkno = softc->blkno; 1012 g->mt_dsreg = (short) softc->dsreg; 1013 /* 1014 * Yes, we know that this is likely to overflow 1015 */ 1016 if (softc->last_resid_was_io) { 1017 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1018 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1019 softc->last_io_resid = 0; 1020 } 1021 } 1022 } else { 1023 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1024 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1025 softc->last_ctl_resid = 0; 1026 } 1027 } 1028 } 1029 error = 0; 1030 break; 1031 } 1032 case MTIOCERRSTAT: 1033 { 1034 struct scsi_tape_errors *sep = 1035 &((union mterrstat *)arg)->scsi_errstat; 1036 1037 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1038 ("saioctl: MTIOCERRSTAT\n")); 1039 1040 bzero(sep, sizeof(*sep)); 1041 sep->io_resid = softc->last_io_resid; 1042 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1043 sizeof (sep->io_sense)); 1044 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1045 sizeof (sep->io_cdb)); 1046 sep->ctl_resid = softc->last_ctl_resid; 1047 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1048 sizeof (sep->ctl_sense)); 1049 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1050 sizeof (sep->ctl_cdb)); 1051 1052 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1053 didlockperiph) 1054 bzero((caddr_t) &softc->errinfo, 1055 sizeof (softc->errinfo)); 1056 error = 0; 1057 break; 1058 } 1059 case MTIOCTOP: 1060 { 1061 struct mtop *mt; 1062 int count; 1063 1064 PENDING_MOUNT_CHECK(softc, periph, dev); 1065 1066 mt = (struct mtop *)arg; 1067 1068 1069 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1070 ("saioctl: op=0x%x count=0x%x\n", 1071 mt->mt_op, mt->mt_count)); 1072 1073 count = mt->mt_count; 1074 switch (mt->mt_op) { 1075 case MTWEOF: /* write an end-of-file marker */ 1076 /* 1077 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1078 * flag because by keeping track of filemarks 1079 * we have last written we know ehether or not 1080 * we need to write more when we close the device. 1081 */ 1082 error = sawritefilemarks(periph, count, FALSE); 1083 break; 1084 case MTWSS: /* write a setmark */ 1085 error = sawritefilemarks(periph, count, TRUE); 1086 break; 1087 case MTBSR: /* backward space record */ 1088 case MTFSR: /* forward space record */ 1089 case MTBSF: /* backward space file */ 1090 case MTFSF: /* forward space file */ 1091 case MTBSS: /* backward space setmark */ 1092 case MTFSS: /* forward space setmark */ 1093 case MTEOD: /* space to end of recorded medium */ 1094 { 1095 int nmarks; 1096 1097 spaceop = SS_FILEMARKS; 1098 nmarks = softc->filemarks; 1099 error = sacheckeod(periph); 1100 if (error) { 1101 xpt_print(periph->path, 1102 "EOD check prior to spacing failed\n"); 1103 softc->flags |= SA_FLAG_EIO_PENDING; 1104 break; 1105 } 1106 nmarks -= softc->filemarks; 1107 switch(mt->mt_op) { 1108 case MTBSR: 1109 count = -count; 1110 /* FALLTHROUGH */ 1111 case MTFSR: 1112 spaceop = SS_BLOCKS; 1113 break; 1114 case MTBSF: 1115 count = -count; 1116 /* FALLTHROUGH */ 1117 case MTFSF: 1118 break; 1119 case MTBSS: 1120 count = -count; 1121 /* FALLTHROUGH */ 1122 case MTFSS: 1123 spaceop = SS_SETMARKS; 1124 break; 1125 case MTEOD: 1126 spaceop = SS_EOD; 1127 count = 0; 1128 nmarks = 0; 1129 break; 1130 default: 1131 error = EINVAL; 1132 break; 1133 } 1134 if (error) 1135 break; 1136 1137 nmarks = softc->filemarks; 1138 /* 1139 * XXX: Why are we checking again? 1140 */ 1141 error = sacheckeod(periph); 1142 if (error) 1143 break; 1144 nmarks -= softc->filemarks; 1145 error = saspace(periph, count - nmarks, spaceop); 1146 /* 1147 * At this point, clear that we've written the tape 1148 * and that we've written any filemarks. We really 1149 * don't know what the applications wishes to do next- 1150 * the sacheckeod's will make sure we terminated the 1151 * tape correctly if we'd been writing, but the next 1152 * action the user application takes will set again 1153 * whether we need to write filemarks. 1154 */ 1155 softc->flags &= 1156 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1157 softc->filemarks = 0; 1158 break; 1159 } 1160 case MTREW: /* rewind */ 1161 PENDING_MOUNT_CHECK(softc, periph, dev); 1162 (void) sacheckeod(periph); 1163 error = sarewind(periph); 1164 /* see above */ 1165 softc->flags &= 1166 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1167 softc->flags &= ~SA_FLAG_ERR_PENDING; 1168 softc->filemarks = 0; 1169 break; 1170 case MTERASE: /* erase */ 1171 PENDING_MOUNT_CHECK(softc, periph, dev); 1172 error = saerase(periph, count); 1173 softc->flags &= 1174 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1175 softc->flags &= ~SA_FLAG_ERR_PENDING; 1176 break; 1177 case MTRETENS: /* re-tension tape */ 1178 PENDING_MOUNT_CHECK(softc, periph, dev); 1179 error = saretension(periph); 1180 softc->flags &= 1181 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1182 softc->flags &= ~SA_FLAG_ERR_PENDING; 1183 break; 1184 case MTOFFL: /* rewind and put the drive offline */ 1185 1186 PENDING_MOUNT_CHECK(softc, periph, dev); 1187 1188 (void) sacheckeod(periph); 1189 /* see above */ 1190 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1191 softc->filemarks = 0; 1192 1193 error = sarewind(periph); 1194 /* clear the frozen flag anyway */ 1195 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1196 1197 /* 1198 * Be sure to allow media removal before ejecting. 1199 */ 1200 1201 saprevent(periph, PR_ALLOW); 1202 if (error == 0) { 1203 error = saloadunload(periph, FALSE); 1204 if (error == 0) { 1205 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1206 } 1207 } 1208 break; 1209 1210 case MTNOP: /* no operation, sets status only */ 1211 case MTCACHE: /* enable controller cache */ 1212 case MTNOCACHE: /* disable controller cache */ 1213 error = 0; 1214 break; 1215 1216 case MTSETBSIZ: /* Set block size for device */ 1217 1218 PENDING_MOUNT_CHECK(softc, periph, dev); 1219 1220 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1221 0, 0, 0); 1222 if (error == 0) { 1223 softc->last_media_blksize = 1224 softc->media_blksize; 1225 softc->media_blksize = count; 1226 if (count) { 1227 softc->flags |= SA_FLAG_FIXED; 1228 if (powerof2(count)) { 1229 softc->blk_shift = 1230 ffs(count) - 1; 1231 softc->blk_mask = count - 1; 1232 } else { 1233 softc->blk_mask = ~0; 1234 softc->blk_shift = 0; 1235 } 1236 /* 1237 * Make the user's desire 'persistent'. 1238 */ 1239 softc->quirks &= ~SA_QUIRK_VARIABLE; 1240 softc->quirks |= SA_QUIRK_FIXED; 1241 } else { 1242 softc->flags &= ~SA_FLAG_FIXED; 1243 if (softc->max_blk == 0) { 1244 softc->max_blk = ~0; 1245 } 1246 softc->blk_shift = 0; 1247 if (softc->blk_gran != 0) { 1248 softc->blk_mask = 1249 softc->blk_gran - 1; 1250 } else { 1251 softc->blk_mask = 0; 1252 } 1253 /* 1254 * Make the user's desire 'persistent'. 1255 */ 1256 softc->quirks |= SA_QUIRK_VARIABLE; 1257 softc->quirks &= ~SA_QUIRK_FIXED; 1258 } 1259 } 1260 break; 1261 case MTSETDNSTY: /* Set density for device and mode */ 1262 PENDING_MOUNT_CHECK(softc, periph, dev); 1263 1264 if (count > UCHAR_MAX) { 1265 error = EINVAL; 1266 break; 1267 } else { 1268 error = sasetparams(periph, SA_PARAM_DENSITY, 1269 0, count, 0, 0); 1270 } 1271 break; 1272 case MTCOMP: /* enable compression */ 1273 PENDING_MOUNT_CHECK(softc, periph, dev); 1274 /* 1275 * Some devices don't support compression, and 1276 * don't like it if you ask them for the 1277 * compression page. 1278 */ 1279 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1280 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1281 error = ENODEV; 1282 break; 1283 } 1284 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1285 0, 0, count, SF_NO_PRINT); 1286 break; 1287 default: 1288 error = EINVAL; 1289 } 1290 break; 1291 } 1292 case MTIOCIEOT: 1293 case MTIOCEEOT: 1294 error = 0; 1295 break; 1296 case MTIOCRDSPOS: 1297 PENDING_MOUNT_CHECK(softc, periph, dev); 1298 error = sardpos(periph, 0, (u_int32_t *) arg); 1299 break; 1300 case MTIOCRDHPOS: 1301 PENDING_MOUNT_CHECK(softc, periph, dev); 1302 error = sardpos(periph, 1, (u_int32_t *) arg); 1303 break; 1304 case MTIOCSLOCATE: 1305 PENDING_MOUNT_CHECK(softc, periph, dev); 1306 error = sasetpos(periph, 0, (u_int32_t *) arg); 1307 break; 1308 case MTIOCHLOCATE: 1309 PENDING_MOUNT_CHECK(softc, periph, dev); 1310 error = sasetpos(periph, 1, (u_int32_t *) arg); 1311 break; 1312 case MTIOCGETEOTMODEL: 1313 error = 0; 1314 if (softc->quirks & SA_QUIRK_1FM) 1315 mode = 1; 1316 else 1317 mode = 2; 1318 *((u_int32_t *) arg) = mode; 1319 break; 1320 case MTIOCSETEOTMODEL: 1321 error = 0; 1322 switch (*((u_int32_t *) arg)) { 1323 case 1: 1324 softc->quirks &= ~SA_QUIRK_2FM; 1325 softc->quirks |= SA_QUIRK_1FM; 1326 break; 1327 case 2: 1328 softc->quirks &= ~SA_QUIRK_1FM; 1329 softc->quirks |= SA_QUIRK_2FM; 1330 break; 1331 default: 1332 error = EINVAL; 1333 break; 1334 } 1335 break; 1336 default: 1337 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1338 break; 1339 } 1340 1341 /* 1342 * Check to see if we cleared a frozen state 1343 */ 1344 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1345 switch(cmd) { 1346 case MTIOCRDSPOS: 1347 case MTIOCRDHPOS: 1348 case MTIOCSLOCATE: 1349 case MTIOCHLOCATE: 1350 softc->fileno = (daddr_t) -1; 1351 softc->blkno = (daddr_t) -1; 1352 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1353 xpt_print(periph->path, 1354 "tape state now unfrozen.\n"); 1355 break; 1356 default: 1357 break; 1358 } 1359 } 1360 if (didlockperiph) { 1361 cam_periph_unhold(periph); 1362 } 1363 cam_periph_unlock(periph); 1364 return (error); 1365 } 1366 1367 static void 1368 sainit(void) 1369 { 1370 cam_status status; 1371 1372 /* 1373 * Install a global async callback. 1374 */ 1375 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1376 1377 if (status != CAM_REQ_CMP) { 1378 printf("sa: Failed to attach master async callback " 1379 "due to status 0x%x!\n", status); 1380 } 1381 } 1382 1383 static void 1384 saoninvalidate(struct cam_periph *periph) 1385 { 1386 struct sa_softc *softc; 1387 1388 softc = (struct sa_softc *)periph->softc; 1389 1390 /* 1391 * De-register any async callbacks. 1392 */ 1393 xpt_register_async(0, saasync, periph, periph->path); 1394 1395 softc->flags |= SA_FLAG_INVALID; 1396 1397 /* 1398 * Return all queued I/O with ENXIO. 1399 * XXX Handle any transactions queued to the card 1400 * with XPT_ABORT_CCB. 1401 */ 1402 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1403 softc->queue_count = 0; 1404 } 1405 1406 static void 1407 sacleanup(struct cam_periph *periph) 1408 { 1409 struct sa_softc *softc; 1410 int i; 1411 1412 softc = (struct sa_softc *)periph->softc; 1413 1414 devstat_remove_entry(softc->device_stats); 1415 cam_periph_unlock(periph); 1416 destroy_dev(softc->devs.ctl_dev); 1417 for (i = 0; i < SA_NUM_MODES; i++) { 1418 destroy_dev(softc->devs.mode_devs[i].r_dev); 1419 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1420 destroy_dev(softc->devs.mode_devs[i].er_dev); 1421 } 1422 cam_periph_lock(periph); 1423 free(softc, M_SCSISA); 1424 } 1425 1426 static void 1427 saasync(void *callback_arg, u_int32_t code, 1428 struct cam_path *path, void *arg) 1429 { 1430 struct cam_periph *periph; 1431 1432 periph = (struct cam_periph *)callback_arg; 1433 switch (code) { 1434 case AC_FOUND_DEVICE: 1435 { 1436 struct ccb_getdev *cgd; 1437 cam_status status; 1438 1439 cgd = (struct ccb_getdev *)arg; 1440 if (cgd == NULL) 1441 break; 1442 1443 if (cgd->protocol != PROTO_SCSI) 1444 break; 1445 1446 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1447 break; 1448 1449 /* 1450 * Allocate a peripheral instance for 1451 * this device and start the probe 1452 * process. 1453 */ 1454 status = cam_periph_alloc(saregister, saoninvalidate, 1455 sacleanup, sastart, 1456 "sa", CAM_PERIPH_BIO, path, 1457 saasync, AC_FOUND_DEVICE, cgd); 1458 1459 if (status != CAM_REQ_CMP 1460 && status != CAM_REQ_INPROG) 1461 printf("saasync: Unable to probe new device " 1462 "due to status 0x%x\n", status); 1463 break; 1464 } 1465 default: 1466 cam_periph_async(periph, code, path, arg); 1467 break; 1468 } 1469 } 1470 1471 static void 1472 sasysctlinit(void *context, int pending) 1473 { 1474 struct cam_periph *periph; 1475 struct sa_softc *softc; 1476 char tmpstr[80], tmpstr2[80]; 1477 1478 periph = (struct cam_periph *)context; 1479 /* 1480 * If the periph is invalid, no need to setup the sysctls. 1481 */ 1482 if (periph->flags & CAM_PERIPH_INVALID) 1483 goto bailout; 1484 1485 softc = (struct sa_softc *)periph->softc; 1486 1487 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 1488 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 1489 1490 sysctl_ctx_init(&softc->sysctl_ctx); 1491 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 1492 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 1493 CTLFLAG_RD, 0, tmpstr); 1494 if (softc->sysctl_tree == NULL) 1495 goto bailout; 1496 1497 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1498 OID_AUTO, "allow_io_split", CTLTYPE_INT | CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 1499 &softc->allow_io_split, 0, "Allow Splitting I/O"); 1500 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1501 OID_AUTO, "maxio", CTLTYPE_INT | CTLFLAG_RD, 1502 &softc->maxio, 0, "Maximum I/O size"); 1503 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1504 OID_AUTO, "cpi_maxio", CTLTYPE_INT | CTLFLAG_RD, 1505 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 1506 1507 bailout: 1508 /* 1509 * Release the reference that was held when this task was enqueued. 1510 */ 1511 cam_periph_release(periph); 1512 } 1513 1514 static cam_status 1515 saregister(struct cam_periph *periph, void *arg) 1516 { 1517 struct sa_softc *softc; 1518 struct ccb_getdev *cgd; 1519 struct ccb_pathinq cpi; 1520 caddr_t match; 1521 char tmpstr[80]; 1522 int i; 1523 1524 cgd = (struct ccb_getdev *)arg; 1525 if (cgd == NULL) { 1526 printf("saregister: no getdev CCB, can't register device\n"); 1527 return (CAM_REQ_CMP_ERR); 1528 } 1529 1530 softc = (struct sa_softc *) 1531 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1532 if (softc == NULL) { 1533 printf("saregister: Unable to probe new device. " 1534 "Unable to allocate softc\n"); 1535 return (CAM_REQ_CMP_ERR); 1536 } 1537 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1538 softc->state = SA_STATE_NORMAL; 1539 softc->fileno = (daddr_t) -1; 1540 softc->blkno = (daddr_t) -1; 1541 1542 bioq_init(&softc->bio_queue); 1543 periph->softc = softc; 1544 1545 /* 1546 * See if this device has any quirks. 1547 */ 1548 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1549 (caddr_t)sa_quirk_table, 1550 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1551 sizeof(*sa_quirk_table), scsi_inquiry_match); 1552 1553 if (match != NULL) { 1554 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1555 softc->last_media_blksize = 1556 ((struct sa_quirk_entry *)match)->prefblk; 1557 } else 1558 softc->quirks = SA_QUIRK_NONE; 1559 1560 bzero(&cpi, sizeof(cpi)); 1561 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1562 cpi.ccb_h.func_code = XPT_PATH_INQ; 1563 xpt_action((union ccb *)&cpi); 1564 1565 /* 1566 * The SA driver supports a blocksize, but we don't know the 1567 * blocksize until we media is inserted. So, set a flag to 1568 * indicate that the blocksize is unavailable right now. 1569 */ 1570 cam_periph_unlock(periph); 1571 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1572 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1573 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1574 1575 /* 1576 * Load the default value that is either compiled in, or loaded 1577 * in the global kern.cam.sa.allow_io_split tunable. 1578 */ 1579 softc->allow_io_split = sa_allow_io_split; 1580 1581 /* 1582 * Load a per-instance tunable, if it exists. NOTE that this 1583 * tunable WILL GO AWAY in FreeBSD 11.0. 1584 */ 1585 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 1586 periph->unit_number); 1587 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 1588 1589 /* 1590 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 1591 * the smaller of cpi.maxio or MAXPHYS. 1592 */ 1593 if (cpi.maxio == 0) 1594 softc->maxio = DFLTPHYS; 1595 else if (cpi.maxio > MAXPHYS) 1596 softc->maxio = MAXPHYS; 1597 else 1598 softc->maxio = cpi.maxio; 1599 1600 /* 1601 * Record the controller's maximum I/O size so we can report it to 1602 * the user later. 1603 */ 1604 softc->cpi_maxio = cpi.maxio; 1605 1606 /* 1607 * By default we tell physio that we do not want our I/O split. 1608 * The user needs to have a 1:1 mapping between the size of his 1609 * write to a tape character device and the size of the write 1610 * that actually goes down to the drive. 1611 */ 1612 if (softc->allow_io_split == 0) 1613 softc->si_flags = SI_NOSPLIT; 1614 else 1615 softc->si_flags = 0; 1616 1617 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 1618 1619 /* 1620 * If the SIM supports unmapped I/O, let physio know that we can 1621 * handle unmapped buffers. 1622 */ 1623 if (cpi.hba_misc & PIM_UNMAPPED) 1624 softc->si_flags |= SI_UNMAPPED; 1625 1626 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1627 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1628 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1629 softc->devs.ctl_dev->si_drv1 = periph; 1630 softc->devs.ctl_dev->si_iosize_max = softc->maxio; 1631 softc->devs.ctl_dev->si_flags |= softc->si_flags; 1632 1633 for (i = 0; i < SA_NUM_MODES; i++) { 1634 1635 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1636 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1637 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1638 periph->periph_name, periph->unit_number, i); 1639 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1640 softc->devs.mode_devs[i].r_dev->si_iosize_max = softc->maxio; 1641 softc->devs.mode_devs[i].r_dev->si_flags |= softc->si_flags; 1642 1643 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1644 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1645 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1646 periph->periph_name, periph->unit_number, i); 1647 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1648 softc->devs.mode_devs[i].nr_dev->si_iosize_max = softc->maxio; 1649 softc->devs.mode_devs[i].nr_dev->si_flags |= softc->si_flags; 1650 1651 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1652 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1653 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1654 periph->periph_name, periph->unit_number, i); 1655 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1656 softc->devs.mode_devs[i].er_dev->si_iosize_max = softc->maxio; 1657 softc->devs.mode_devs[i].er_dev->si_flags |= softc->si_flags; 1658 1659 /* 1660 * Make the (well known) aliases for the first mode. 1661 */ 1662 if (i == 0) { 1663 struct cdev *alias; 1664 1665 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1666 "%s%d", periph->periph_name, periph->unit_number); 1667 alias->si_drv1 = periph; 1668 alias->si_iosize_max = softc->maxio; 1669 alias->si_flags |= softc->si_flags; 1670 1671 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1672 "n%s%d", periph->periph_name, periph->unit_number); 1673 alias->si_drv1 = periph; 1674 alias->si_iosize_max = softc->maxio; 1675 alias->si_flags |= softc->si_flags; 1676 1677 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1678 "e%s%d", periph->periph_name, periph->unit_number); 1679 alias->si_drv1 = periph; 1680 alias->si_iosize_max = softc->maxio; 1681 alias->si_flags |= softc->si_flags; 1682 } 1683 } 1684 cam_periph_lock(periph); 1685 1686 /* 1687 * Bump the peripheral refcount for the sysctl thread, in case we 1688 * get invalidated before the thread has a chance to run. 1689 */ 1690 cam_periph_acquire(periph); 1691 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 1692 1693 /* 1694 * Add an async callback so that we get 1695 * notified if this device goes away. 1696 */ 1697 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1698 1699 xpt_announce_periph(periph, NULL); 1700 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 1701 1702 return (CAM_REQ_CMP); 1703 } 1704 1705 static void 1706 sastart(struct cam_periph *periph, union ccb *start_ccb) 1707 { 1708 struct sa_softc *softc; 1709 1710 softc = (struct sa_softc *)periph->softc; 1711 1712 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1713 1714 1715 switch (softc->state) { 1716 case SA_STATE_NORMAL: 1717 { 1718 /* Pull a buffer from the queue and get going on it */ 1719 struct bio *bp; 1720 1721 /* 1722 * See if there is a buf with work for us to do.. 1723 */ 1724 bp = bioq_first(&softc->bio_queue); 1725 if (bp == NULL) { 1726 xpt_release_ccb(start_ccb); 1727 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1728 struct bio *done_bp; 1729 again: 1730 softc->queue_count--; 1731 bioq_remove(&softc->bio_queue, bp); 1732 bp->bio_resid = bp->bio_bcount; 1733 done_bp = bp; 1734 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1735 /* 1736 * We now just clear errors in this case 1737 * and let the residual be the notifier. 1738 */ 1739 bp->bio_error = 0; 1740 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1741 /* 1742 * This can only happen if we're reading 1743 * in fixed length mode. In this case, 1744 * we dump the rest of the list the 1745 * same way. 1746 */ 1747 bp->bio_error = 0; 1748 if (bioq_first(&softc->bio_queue) != NULL) { 1749 biodone(done_bp); 1750 goto again; 1751 } 1752 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1753 bp->bio_error = EIO; 1754 bp->bio_flags |= BIO_ERROR; 1755 } 1756 bp = bioq_first(&softc->bio_queue); 1757 /* 1758 * Only if we have no other buffers queued up 1759 * do we clear the pending error flag. 1760 */ 1761 if (bp == NULL) 1762 softc->flags &= ~SA_FLAG_ERR_PENDING; 1763 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1764 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1765 "%d more buffers queued up\n", 1766 (softc->flags & SA_FLAG_ERR_PENDING), 1767 (bp != NULL)? "not " : " ", softc->queue_count)); 1768 xpt_release_ccb(start_ccb); 1769 biodone(done_bp); 1770 } else { 1771 u_int32_t length; 1772 1773 bioq_remove(&softc->bio_queue, bp); 1774 softc->queue_count--; 1775 1776 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1777 if (softc->blk_shift != 0) { 1778 length = 1779 bp->bio_bcount >> softc->blk_shift; 1780 } else if (softc->media_blksize != 0) { 1781 length = bp->bio_bcount / 1782 softc->media_blksize; 1783 } else { 1784 bp->bio_error = EIO; 1785 xpt_print(periph->path, "zero blocksize" 1786 " for FIXED length writes?\n"); 1787 biodone(bp); 1788 break; 1789 } 1790 #if 0 1791 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1792 ("issuing a %d fixed record %s\n", 1793 length, (bp->bio_cmd == BIO_READ)? "read" : 1794 "write")); 1795 #endif 1796 } else { 1797 length = bp->bio_bcount; 1798 #if 0 1799 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1800 ("issuing a %d variable byte %s\n", 1801 length, (bp->bio_cmd == BIO_READ)? "read" : 1802 "write")); 1803 #endif 1804 } 1805 devstat_start_transaction_bio(softc->device_stats, bp); 1806 /* 1807 * Some people have theorized that we should 1808 * suppress illegal length indication if we are 1809 * running in variable block mode so that we don't 1810 * have to request sense every time our requested 1811 * block size is larger than the written block. 1812 * The residual information from the ccb allows 1813 * us to identify this situation anyway. The only 1814 * problem with this is that we will not get 1815 * information about blocks that are larger than 1816 * our read buffer unless we set the block size 1817 * in the mode page to something other than 0. 1818 * 1819 * I believe that this is a non-issue. If user apps 1820 * don't adjust their read size to match our record 1821 * size, that's just life. Anyway, the typical usage 1822 * would be to issue, e.g., 64KB reads and occasionally 1823 * have to do deal with 512 byte or 1KB intermediate 1824 * records. 1825 */ 1826 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1827 MTIO_DSREG_RD : MTIO_DSREG_WR; 1828 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1829 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 1830 SCSI_RW_READ : SCSI_RW_WRITE) | 1831 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 1832 SCSI_RW_BIO : 0), FALSE, 1833 (softc->flags & SA_FLAG_FIXED) != 0, length, 1834 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 1835 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1836 IO_TIMEOUT); 1837 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1838 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1839 start_ccb->ccb_h.ccb_bp = bp; 1840 bp = bioq_first(&softc->bio_queue); 1841 xpt_action(start_ccb); 1842 } 1843 1844 if (bp != NULL) { 1845 /* Have more work to do, so ensure we stay scheduled */ 1846 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1847 } 1848 break; 1849 } 1850 case SA_STATE_ABNORMAL: 1851 default: 1852 panic("state 0x%x in sastart", softc->state); 1853 break; 1854 } 1855 } 1856 1857 1858 static void 1859 sadone(struct cam_periph *periph, union ccb *done_ccb) 1860 { 1861 struct sa_softc *softc; 1862 struct ccb_scsiio *csio; 1863 1864 softc = (struct sa_softc *)periph->softc; 1865 csio = &done_ccb->csio; 1866 switch (CCB_Type(csio)) { 1867 case SA_CCB_BUFFER_IO: 1868 { 1869 struct bio *bp; 1870 int error; 1871 1872 softc->dsreg = MTIO_DSREG_REST; 1873 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1874 error = 0; 1875 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1876 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1877 /* 1878 * A retry was scheduled, so just return. 1879 */ 1880 return; 1881 } 1882 } 1883 1884 if (error == EIO) { 1885 1886 /* 1887 * Catastrophic error. Mark the tape as frozen 1888 * (we no longer know tape position). 1889 * 1890 * Return all queued I/O with EIO, and unfreeze 1891 * our queue so that future transactions that 1892 * attempt to fix this problem can get to the 1893 * device. 1894 * 1895 */ 1896 1897 softc->flags |= SA_FLAG_TAPE_FROZEN; 1898 bioq_flush(&softc->bio_queue, NULL, EIO); 1899 } 1900 if (error != 0) { 1901 bp->bio_resid = bp->bio_bcount; 1902 bp->bio_error = error; 1903 bp->bio_flags |= BIO_ERROR; 1904 /* 1905 * In the error case, position is updated in saerror. 1906 */ 1907 } else { 1908 bp->bio_resid = csio->resid; 1909 bp->bio_error = 0; 1910 if (csio->resid != 0) { 1911 bp->bio_flags |= BIO_ERROR; 1912 } 1913 if (bp->bio_cmd == BIO_WRITE) { 1914 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1915 softc->filemarks = 0; 1916 } 1917 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1918 (softc->blkno != (daddr_t) -1)) { 1919 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1920 u_int32_t l; 1921 if (softc->blk_shift != 0) { 1922 l = bp->bio_bcount >> 1923 softc->blk_shift; 1924 } else { 1925 l = bp->bio_bcount / 1926 softc->media_blksize; 1927 } 1928 softc->blkno += (daddr_t) l; 1929 } else { 1930 softc->blkno++; 1931 } 1932 } 1933 } 1934 /* 1935 * If we had an error (immediate or pending), 1936 * release the device queue now. 1937 */ 1938 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1939 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1940 if (error || bp->bio_resid) { 1941 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1942 ("error %d resid %ld count %ld\n", error, 1943 bp->bio_resid, bp->bio_bcount)); 1944 } 1945 biofinish(bp, softc->device_stats, 0); 1946 break; 1947 } 1948 } 1949 xpt_release_ccb(done_ccb); 1950 } 1951 1952 /* 1953 * Mount the tape (make sure it's ready for I/O). 1954 */ 1955 static int 1956 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1957 { 1958 struct sa_softc *softc; 1959 union ccb *ccb; 1960 int error; 1961 1962 /* 1963 * oflags can be checked for 'kind' of open (read-only check) - later 1964 * dev can be checked for a control-mode or compression open - later 1965 */ 1966 UNUSED_PARAMETER(oflags); 1967 UNUSED_PARAMETER(dev); 1968 1969 1970 softc = (struct sa_softc *)periph->softc; 1971 1972 /* 1973 * This should determine if something has happend since the last 1974 * open/mount that would invalidate the mount. We do *not* want 1975 * to retry this command- we just want the status. But we only 1976 * do this if we're mounted already- if we're not mounted, 1977 * we don't care about the unit read state and can instead use 1978 * this opportunity to attempt to reserve the tape unit. 1979 */ 1980 1981 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1982 ccb = cam_periph_getccb(periph, 1); 1983 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1984 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1985 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1986 softc->device_stats); 1987 if (error == ENXIO) { 1988 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1989 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1990 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1991 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1992 softc->device_stats); 1993 } else if (error) { 1994 /* 1995 * We don't need to freeze the tape because we 1996 * will now attempt to rewind/load it. 1997 */ 1998 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1999 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2000 xpt_print(periph->path, 2001 "error %d on TUR in samount\n", error); 2002 } 2003 } 2004 } else { 2005 error = sareservereleaseunit(periph, TRUE); 2006 if (error) { 2007 return (error); 2008 } 2009 ccb = cam_periph_getccb(periph, 1); 2010 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2011 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2012 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2013 softc->device_stats); 2014 } 2015 2016 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2017 struct scsi_read_block_limits_data *rblim = NULL; 2018 int comp_enabled, comp_supported; 2019 u_int8_t write_protect, guessing = 0; 2020 2021 /* 2022 * Clear out old state. 2023 */ 2024 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2025 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 2026 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 2027 softc->filemarks = 0; 2028 2029 /* 2030 * *Very* first off, make sure we're loaded to BOT. 2031 */ 2032 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2033 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2034 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2035 softc->device_stats); 2036 2037 /* 2038 * In case this doesn't work, do a REWIND instead 2039 */ 2040 if (error) { 2041 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2042 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2043 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2044 softc->device_stats); 2045 } 2046 if (error) { 2047 xpt_release_ccb(ccb); 2048 goto exit; 2049 } 2050 2051 /* 2052 * Do a dummy test read to force access to the 2053 * media so that the drive will really know what's 2054 * there. We actually don't really care what the 2055 * blocksize on tape is and don't expect to really 2056 * read a full record. 2057 */ 2058 rblim = (struct scsi_read_block_limits_data *) 2059 malloc(8192, M_SCSISA, M_NOWAIT); 2060 if (rblim == NULL) { 2061 xpt_print(periph->path, "no memory for test read\n"); 2062 xpt_release_ccb(ccb); 2063 error = ENOMEM; 2064 goto exit; 2065 } 2066 2067 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2068 scsi_sa_read_write(&ccb->csio, 0, sadone, 2069 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2070 (void *) rblim, 8192, SSD_FULL_SIZE, 2071 IO_TIMEOUT); 2072 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2073 softc->device_stats); 2074 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2075 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2076 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2077 SF_NO_PRINT | SF_RETRY_UA, 2078 softc->device_stats); 2079 if (error) { 2080 xpt_print(periph->path, 2081 "unable to rewind after test read\n"); 2082 xpt_release_ccb(ccb); 2083 goto exit; 2084 } 2085 } 2086 2087 /* 2088 * Next off, determine block limits. 2089 */ 2090 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2091 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2092 2093 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2094 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2095 2096 xpt_release_ccb(ccb); 2097 2098 if (error != 0) { 2099 /* 2100 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2101 * a MANDATORY command. Anyway- it doesn't matter- 2102 * we can proceed anyway. 2103 */ 2104 softc->blk_gran = 0; 2105 softc->max_blk = ~0; 2106 softc->min_blk = 0; 2107 } else { 2108 if (softc->scsi_rev >= SCSI_REV_SPC) { 2109 softc->blk_gran = RBL_GRAN(rblim); 2110 } else { 2111 softc->blk_gran = 0; 2112 } 2113 /* 2114 * We take max_blk == min_blk to mean a default to 2115 * fixed mode- but note that whatever we get out of 2116 * sagetparams below will actually determine whether 2117 * we are actually *in* fixed mode. 2118 */ 2119 softc->max_blk = scsi_3btoul(rblim->maximum); 2120 softc->min_blk = scsi_2btoul(rblim->minimum); 2121 2122 2123 } 2124 /* 2125 * Next, perform a mode sense to determine 2126 * current density, blocksize, compression etc. 2127 */ 2128 error = sagetparams(periph, SA_PARAM_ALL, 2129 &softc->media_blksize, 2130 &softc->media_density, 2131 &softc->media_numblks, 2132 &softc->buffer_mode, &write_protect, 2133 &softc->speed, &comp_supported, 2134 &comp_enabled, &softc->comp_algorithm, 2135 NULL); 2136 2137 if (error != 0) { 2138 /* 2139 * We could work a little harder here. We could 2140 * adjust our attempts to get information. It 2141 * might be an ancient tape drive. If someone 2142 * nudges us, we'll do that. 2143 */ 2144 goto exit; 2145 } 2146 2147 /* 2148 * If no quirk has determined that this is a device that is 2149 * preferred to be in fixed or variable mode, now is the time 2150 * to find out. 2151 */ 2152 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2153 guessing = 1; 2154 /* 2155 * This could be expensive to find out. Luckily we 2156 * only need to do this once. If we start out in 2157 * 'default' mode, try and set ourselves to one 2158 * of the densities that would determine a wad 2159 * of other stuff. Go from highest to lowest. 2160 */ 2161 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2162 int i; 2163 static u_int8_t ctry[] = { 2164 SCSI_DENSITY_HALFINCH_PE, 2165 SCSI_DENSITY_HALFINCH_6250C, 2166 SCSI_DENSITY_HALFINCH_6250, 2167 SCSI_DENSITY_HALFINCH_1600, 2168 SCSI_DENSITY_HALFINCH_800, 2169 SCSI_DENSITY_QIC_4GB, 2170 SCSI_DENSITY_QIC_2GB, 2171 SCSI_DENSITY_QIC_525_320, 2172 SCSI_DENSITY_QIC_150, 2173 SCSI_DENSITY_QIC_120, 2174 SCSI_DENSITY_QIC_24, 2175 SCSI_DENSITY_QIC_11_9TRK, 2176 SCSI_DENSITY_QIC_11_4TRK, 2177 SCSI_DENSITY_QIC_1320, 2178 SCSI_DENSITY_QIC_3080, 2179 0 2180 }; 2181 for (i = 0; ctry[i]; i++) { 2182 error = sasetparams(periph, 2183 SA_PARAM_DENSITY, 0, ctry[i], 2184 0, SF_NO_PRINT); 2185 if (error == 0) { 2186 softc->media_density = ctry[i]; 2187 break; 2188 } 2189 } 2190 } 2191 switch (softc->media_density) { 2192 case SCSI_DENSITY_QIC_11_4TRK: 2193 case SCSI_DENSITY_QIC_11_9TRK: 2194 case SCSI_DENSITY_QIC_24: 2195 case SCSI_DENSITY_QIC_120: 2196 case SCSI_DENSITY_QIC_150: 2197 case SCSI_DENSITY_QIC_525_320: 2198 case SCSI_DENSITY_QIC_1320: 2199 case SCSI_DENSITY_QIC_3080: 2200 softc->quirks &= ~SA_QUIRK_2FM; 2201 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2202 softc->last_media_blksize = 512; 2203 break; 2204 case SCSI_DENSITY_QIC_4GB: 2205 case SCSI_DENSITY_QIC_2GB: 2206 softc->quirks &= ~SA_QUIRK_2FM; 2207 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2208 softc->last_media_blksize = 1024; 2209 break; 2210 default: 2211 softc->last_media_blksize = 2212 softc->media_blksize; 2213 softc->quirks |= SA_QUIRK_VARIABLE; 2214 break; 2215 } 2216 } 2217 2218 /* 2219 * If no quirk has determined that this is a device that needs 2220 * to have 2 Filemarks at EOD, now is the time to find out. 2221 */ 2222 2223 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2224 switch (softc->media_density) { 2225 case SCSI_DENSITY_HALFINCH_800: 2226 case SCSI_DENSITY_HALFINCH_1600: 2227 case SCSI_DENSITY_HALFINCH_6250: 2228 case SCSI_DENSITY_HALFINCH_6250C: 2229 case SCSI_DENSITY_HALFINCH_PE: 2230 softc->quirks &= ~SA_QUIRK_1FM; 2231 softc->quirks |= SA_QUIRK_2FM; 2232 break; 2233 default: 2234 break; 2235 } 2236 } 2237 2238 /* 2239 * Now validate that some info we got makes sense. 2240 */ 2241 if ((softc->max_blk < softc->media_blksize) || 2242 (softc->min_blk > softc->media_blksize && 2243 softc->media_blksize)) { 2244 xpt_print(periph->path, 2245 "BLOCK LIMITS (%d..%d) could not match current " 2246 "block settings (%d)- adjusting\n", softc->min_blk, 2247 softc->max_blk, softc->media_blksize); 2248 softc->max_blk = softc->min_blk = 2249 softc->media_blksize; 2250 } 2251 2252 /* 2253 * Now put ourselves into the right frame of mind based 2254 * upon quirks... 2255 */ 2256 tryagain: 2257 /* 2258 * If we want to be in FIXED mode and our current blocksize 2259 * is not equal to our last blocksize (if nonzero), try and 2260 * set ourselves to this last blocksize (as the 'preferred' 2261 * block size). The initial quirkmatch at registry sets the 2262 * initial 'last' blocksize. If, for whatever reason, this 2263 * 'last' blocksize is zero, set the blocksize to 512, 2264 * or min_blk if that's larger. 2265 */ 2266 if ((softc->quirks & SA_QUIRK_FIXED) && 2267 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2268 (softc->media_blksize != softc->last_media_blksize)) { 2269 softc->media_blksize = softc->last_media_blksize; 2270 if (softc->media_blksize == 0) { 2271 softc->media_blksize = 512; 2272 if (softc->media_blksize < softc->min_blk) { 2273 softc->media_blksize = softc->min_blk; 2274 } 2275 } 2276 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2277 softc->media_blksize, 0, 0, SF_NO_PRINT); 2278 if (error) { 2279 xpt_print(periph->path, 2280 "unable to set fixed blocksize to %d\n", 2281 softc->media_blksize); 2282 goto exit; 2283 } 2284 } 2285 2286 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2287 (softc->media_blksize != 0)) { 2288 softc->last_media_blksize = softc->media_blksize; 2289 softc->media_blksize = 0; 2290 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2291 0, 0, 0, SF_NO_PRINT); 2292 if (error) { 2293 /* 2294 * If this fails and we were guessing, just 2295 * assume that we got it wrong and go try 2296 * fixed block mode. Don't even check against 2297 * density code at this point. 2298 */ 2299 if (guessing) { 2300 softc->quirks &= ~SA_QUIRK_VARIABLE; 2301 softc->quirks |= SA_QUIRK_FIXED; 2302 if (softc->last_media_blksize == 0) 2303 softc->last_media_blksize = 512; 2304 goto tryagain; 2305 } 2306 xpt_print(periph->path, 2307 "unable to set variable blocksize\n"); 2308 goto exit; 2309 } 2310 } 2311 2312 /* 2313 * Now that we have the current block size, 2314 * set up some parameters for sastart's usage. 2315 */ 2316 if (softc->media_blksize) { 2317 softc->flags |= SA_FLAG_FIXED; 2318 if (powerof2(softc->media_blksize)) { 2319 softc->blk_shift = 2320 ffs(softc->media_blksize) - 1; 2321 softc->blk_mask = softc->media_blksize - 1; 2322 } else { 2323 softc->blk_mask = ~0; 2324 softc->blk_shift = 0; 2325 } 2326 } else { 2327 /* 2328 * The SCSI-3 spec allows 0 to mean "unspecified". 2329 * The SCSI-1 spec allows 0 to mean 'infinite'. 2330 * 2331 * Either works here. 2332 */ 2333 if (softc->max_blk == 0) { 2334 softc->max_blk = ~0; 2335 } 2336 softc->blk_shift = 0; 2337 if (softc->blk_gran != 0) { 2338 softc->blk_mask = softc->blk_gran - 1; 2339 } else { 2340 softc->blk_mask = 0; 2341 } 2342 } 2343 2344 if (write_protect) 2345 softc->flags |= SA_FLAG_TAPE_WP; 2346 2347 if (comp_supported) { 2348 if (softc->saved_comp_algorithm == 0) 2349 softc->saved_comp_algorithm = 2350 softc->comp_algorithm; 2351 softc->flags |= SA_FLAG_COMP_SUPP; 2352 if (comp_enabled) 2353 softc->flags |= SA_FLAG_COMP_ENABLED; 2354 } else 2355 softc->flags |= SA_FLAG_COMP_UNSUPP; 2356 2357 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2358 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2359 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2360 0, 0, SF_NO_PRINT); 2361 if (error == 0) { 2362 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2363 } else { 2364 xpt_print(periph->path, 2365 "unable to set buffered mode\n"); 2366 } 2367 error = 0; /* not an error */ 2368 } 2369 2370 2371 if (error == 0) { 2372 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2373 } 2374 exit: 2375 if (rblim != NULL) 2376 free(rblim, M_SCSISA); 2377 2378 if (error != 0) { 2379 softc->dsreg = MTIO_DSREG_NIL; 2380 } else { 2381 softc->fileno = softc->blkno = 0; 2382 softc->dsreg = MTIO_DSREG_REST; 2383 } 2384 #ifdef SA_1FM_AT_EOD 2385 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2386 softc->quirks |= SA_QUIRK_1FM; 2387 #else 2388 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2389 softc->quirks |= SA_QUIRK_2FM; 2390 #endif 2391 } else 2392 xpt_release_ccb(ccb); 2393 2394 /* 2395 * If we return an error, we're not mounted any more, 2396 * so release any device reservation. 2397 */ 2398 if (error != 0) { 2399 (void) sareservereleaseunit(periph, FALSE); 2400 } else { 2401 /* 2402 * Clear I/O residual. 2403 */ 2404 softc->last_io_resid = 0; 2405 softc->last_ctl_resid = 0; 2406 } 2407 return (error); 2408 } 2409 2410 /* 2411 * How many filemarks do we need to write if we were to terminate the 2412 * tape session right now? Note that this can be a negative number 2413 */ 2414 2415 static int 2416 samarkswanted(struct cam_periph *periph) 2417 { 2418 int markswanted; 2419 struct sa_softc *softc; 2420 2421 softc = (struct sa_softc *)periph->softc; 2422 markswanted = 0; 2423 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2424 markswanted++; 2425 if (softc->quirks & SA_QUIRK_2FM) 2426 markswanted++; 2427 } 2428 markswanted -= softc->filemarks; 2429 return (markswanted); 2430 } 2431 2432 static int 2433 sacheckeod(struct cam_periph *periph) 2434 { 2435 int error; 2436 int markswanted; 2437 2438 markswanted = samarkswanted(periph); 2439 2440 if (markswanted > 0) { 2441 error = sawritefilemarks(periph, markswanted, FALSE); 2442 } else { 2443 error = 0; 2444 } 2445 return (error); 2446 } 2447 2448 static int 2449 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2450 { 2451 static const char *toobig = 2452 "%d-byte tape record bigger than supplied buffer\n"; 2453 struct cam_periph *periph; 2454 struct sa_softc *softc; 2455 struct ccb_scsiio *csio; 2456 struct scsi_sense_data *sense; 2457 uint64_t resid = 0; 2458 int64_t info = 0; 2459 cam_status status; 2460 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 2461 int sense_len; 2462 uint8_t stream_bits; 2463 2464 periph = xpt_path_periph(ccb->ccb_h.path); 2465 softc = (struct sa_softc *)periph->softc; 2466 csio = &ccb->csio; 2467 sense = &csio->sense_data; 2468 sense_len = csio->sense_len - csio->sense_resid; 2469 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 2470 &asc, &ascq, /*show_errors*/ 1); 2471 if (asc != -1 && ascq != -1) 2472 aqvalid = 1; 2473 else 2474 aqvalid = 0; 2475 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 2476 stream_valid = 1; 2477 else 2478 stream_valid = 0; 2479 error = 0; 2480 2481 status = csio->ccb_h.status & CAM_STATUS_MASK; 2482 2483 /* 2484 * Calculate/latch up, any residuals... We do this in a funny 2-step 2485 * so we can print stuff here if we have CAM_DEBUG enabled for this 2486 * unit. 2487 */ 2488 if (status == CAM_SCSI_STATUS_ERROR) { 2489 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 2490 &info) == 0) { 2491 if ((softc->flags & SA_FLAG_FIXED) != 0) 2492 resid *= softc->media_blksize; 2493 } else { 2494 resid = csio->dxfer_len; 2495 info = resid; 2496 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2497 if (softc->media_blksize) 2498 info /= softc->media_blksize; 2499 } 2500 } 2501 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2502 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2503 sizeof (struct scsi_sense_data)); 2504 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2505 (int) csio->cdb_len); 2506 softc->last_io_resid = resid; 2507 softc->last_resid_was_io = 1; 2508 } else { 2509 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2510 sizeof (struct scsi_sense_data)); 2511 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2512 (int) csio->cdb_len); 2513 softc->last_ctl_resid = resid; 2514 softc->last_resid_was_io = 0; 2515 } 2516 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2517 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 2518 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2519 sense_key, asc, ascq, status, 2520 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 2521 csio->dxfer_len)); 2522 } else { 2523 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2524 ("Cam Status 0x%x\n", status)); 2525 } 2526 2527 switch (status) { 2528 case CAM_REQ_CMP: 2529 return (0); 2530 case CAM_SCSI_STATUS_ERROR: 2531 /* 2532 * If a read/write command, we handle it here. 2533 */ 2534 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 2535 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2536 break; 2537 } 2538 /* 2539 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2540 * on a non read/write command, we assume it's not an error 2541 * and propagate the residule and return. 2542 */ 2543 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2544 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2545 csio->resid = resid; 2546 QFRLS(ccb); 2547 return (0); 2548 } 2549 /* 2550 * Otherwise, we let the common code handle this. 2551 */ 2552 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2553 2554 /* 2555 * XXX: To Be Fixed 2556 * We cannot depend upon CAM honoring retry counts for these. 2557 */ 2558 case CAM_SCSI_BUS_RESET: 2559 case CAM_BDR_SENT: 2560 if (ccb->ccb_h.retry_count <= 0) { 2561 return (EIO); 2562 } 2563 /* FALLTHROUGH */ 2564 default: 2565 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2566 } 2567 2568 /* 2569 * Handle filemark, end of tape, mismatched record sizes.... 2570 * From this point out, we're only handling read/write cases. 2571 * Handle writes && reads differently. 2572 */ 2573 2574 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2575 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2576 csio->resid = resid; 2577 error = ENOSPC; 2578 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 2579 softc->flags |= SA_FLAG_EOM_PENDING; 2580 /* 2581 * Grotesque as it seems, the few times 2582 * I've actually seen a non-zero resid, 2583 * the tape drive actually lied and had 2584 * written all the data!. 2585 */ 2586 csio->resid = 0; 2587 } 2588 } else { 2589 csio->resid = resid; 2590 if (sense_key == SSD_KEY_BLANK_CHECK) { 2591 if (softc->quirks & SA_QUIRK_1FM) { 2592 error = 0; 2593 softc->flags |= SA_FLAG_EOM_PENDING; 2594 } else { 2595 error = EIO; 2596 } 2597 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 2598 if (softc->flags & SA_FLAG_FIXED) { 2599 error = -1; 2600 softc->flags |= SA_FLAG_EOF_PENDING; 2601 } 2602 /* 2603 * Unconditionally, if we detected a filemark on a read, 2604 * mark that we've run moved a file ahead. 2605 */ 2606 if (softc->fileno != (daddr_t) -1) { 2607 softc->fileno++; 2608 softc->blkno = 0; 2609 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2610 } 2611 } 2612 } 2613 2614 /* 2615 * Incorrect Length usually applies to read, but can apply to writes. 2616 */ 2617 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 2618 if (info < 0) { 2619 xpt_print(csio->ccb_h.path, toobig, 2620 csio->dxfer_len - info); 2621 csio->resid = csio->dxfer_len; 2622 error = EIO; 2623 } else { 2624 csio->resid = resid; 2625 if (softc->flags & SA_FLAG_FIXED) { 2626 softc->flags |= SA_FLAG_EIO_PENDING; 2627 } 2628 /* 2629 * Bump the block number if we hadn't seen a filemark. 2630 * Do this independent of errors (we've moved anyway). 2631 */ 2632 if ((stream_valid == 0) || 2633 (stream_bits & SSD_FILEMARK) == 0) { 2634 if (softc->blkno != (daddr_t) -1) { 2635 softc->blkno++; 2636 csio->ccb_h.ccb_pflags |= 2637 SA_POSITION_UPDATED; 2638 } 2639 } 2640 } 2641 } 2642 2643 if (error <= 0) { 2644 /* 2645 * Unfreeze the queue if frozen as we're not returning anything 2646 * to our waiters that would indicate an I/O error has occurred 2647 * (yet). 2648 */ 2649 QFRLS(ccb); 2650 error = 0; 2651 } 2652 return (error); 2653 } 2654 2655 static int 2656 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2657 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2658 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2659 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2660 sa_comp_t *tcs) 2661 { 2662 union ccb *ccb; 2663 void *mode_buffer; 2664 struct scsi_mode_header_6 *mode_hdr; 2665 struct scsi_mode_blk_desc *mode_blk; 2666 int mode_buffer_len; 2667 struct sa_softc *softc; 2668 u_int8_t cpage; 2669 int error; 2670 cam_status status; 2671 2672 softc = (struct sa_softc *)periph->softc; 2673 ccb = cam_periph_getccb(periph, 1); 2674 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2675 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2676 else 2677 cpage = SA_DATA_COMPRESSION_PAGE; 2678 2679 retry: 2680 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2681 2682 if (params_to_get & SA_PARAM_COMPRESSION) { 2683 if (softc->quirks & SA_QUIRK_NOCOMP) { 2684 *comp_supported = FALSE; 2685 params_to_get &= ~SA_PARAM_COMPRESSION; 2686 } else 2687 mode_buffer_len += sizeof (sa_comp_t); 2688 } 2689 2690 /* XXX Fix M_NOWAIT */ 2691 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2692 if (mode_buffer == NULL) { 2693 xpt_release_ccb(ccb); 2694 return (ENOMEM); 2695 } 2696 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2697 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2698 2699 /* it is safe to retry this */ 2700 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2701 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2702 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2703 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2704 2705 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2706 softc->device_stats); 2707 2708 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2709 2710 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2711 /* 2712 * Hmm. Let's see if we can try another page... 2713 * If we've already done that, give up on compression 2714 * for this device and remember this for the future 2715 * and attempt the request without asking for compression 2716 * info. 2717 */ 2718 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2719 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2720 goto retry; 2721 } 2722 softc->quirks |= SA_QUIRK_NOCOMP; 2723 free(mode_buffer, M_SCSISA); 2724 goto retry; 2725 } else if (status == CAM_SCSI_STATUS_ERROR) { 2726 /* Tell the user about the fatal error. */ 2727 scsi_sense_print(&ccb->csio); 2728 goto sagetparamsexit; 2729 } 2730 2731 /* 2732 * If the user only wants the compression information, and 2733 * the device doesn't send back the block descriptor, it's 2734 * no big deal. If the user wants more than just 2735 * compression, though, and the device doesn't pass back the 2736 * block descriptor, we need to send another mode sense to 2737 * get the block descriptor. 2738 */ 2739 if ((mode_hdr->blk_desc_len == 0) && 2740 (params_to_get & SA_PARAM_COMPRESSION) && 2741 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2742 2743 /* 2744 * Decrease the mode buffer length by the size of 2745 * the compression page, to make sure the data 2746 * there doesn't get overwritten. 2747 */ 2748 mode_buffer_len -= sizeof (sa_comp_t); 2749 2750 /* 2751 * Now move the compression page that we presumably 2752 * got back down the memory chunk a little bit so 2753 * it doesn't get spammed. 2754 */ 2755 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2756 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2757 2758 /* 2759 * Now, we issue another mode sense and just ask 2760 * for the block descriptor, etc. 2761 */ 2762 2763 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2764 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2765 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2766 SCSIOP_TIMEOUT); 2767 2768 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2769 softc->device_stats); 2770 2771 if (error != 0) 2772 goto sagetparamsexit; 2773 } 2774 2775 if (params_to_get & SA_PARAM_BLOCKSIZE) 2776 *blocksize = scsi_3btoul(mode_blk->blklen); 2777 2778 if (params_to_get & SA_PARAM_NUMBLOCKS) 2779 *numblocks = scsi_3btoul(mode_blk->nblocks); 2780 2781 if (params_to_get & SA_PARAM_BUFF_MODE) 2782 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2783 2784 if (params_to_get & SA_PARAM_DENSITY) 2785 *density = mode_blk->density; 2786 2787 if (params_to_get & SA_PARAM_WP) 2788 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2789 2790 if (params_to_get & SA_PARAM_SPEED) 2791 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2792 2793 if (params_to_get & SA_PARAM_COMPRESSION) { 2794 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2795 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2796 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2797 *comp_supported = 2798 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2799 *comp_enabled = 2800 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2801 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2802 } else { 2803 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2804 /* 2805 * We don't really know whether this device supports 2806 * Data Compression if the algorithm field is 2807 * zero. Just say we do. 2808 */ 2809 *comp_supported = TRUE; 2810 *comp_enabled = 2811 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2812 *comp_algorithm = cp->sel_comp_alg; 2813 } 2814 if (tcs != NULL) 2815 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2816 } 2817 2818 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2819 int idx; 2820 char *xyz = mode_buffer; 2821 xpt_print_path(periph->path); 2822 printf("Mode Sense Data="); 2823 for (idx = 0; idx < mode_buffer_len; idx++) 2824 printf(" 0x%02x", xyz[idx] & 0xff); 2825 printf("\n"); 2826 } 2827 2828 sagetparamsexit: 2829 2830 xpt_release_ccb(ccb); 2831 free(mode_buffer, M_SCSISA); 2832 return (error); 2833 } 2834 2835 /* 2836 * The purpose of this function is to set one of four different parameters 2837 * for a tape drive: 2838 * - blocksize 2839 * - density 2840 * - compression / compression algorithm 2841 * - buffering mode 2842 * 2843 * The assumption is that this will be called from saioctl(), and therefore 2844 * from a process context. Thus the waiting malloc calls below. If that 2845 * assumption ever changes, the malloc calls should be changed to be 2846 * NOWAIT mallocs. 2847 * 2848 * Any or all of the four parameters may be set when this function is 2849 * called. It should handle setting more than one parameter at once. 2850 */ 2851 static int 2852 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2853 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2854 u_int32_t sense_flags) 2855 { 2856 struct sa_softc *softc; 2857 u_int32_t current_blocksize; 2858 u_int32_t current_calg; 2859 u_int8_t current_density; 2860 u_int8_t current_speed; 2861 int comp_enabled, comp_supported; 2862 void *mode_buffer; 2863 int mode_buffer_len; 2864 struct scsi_mode_header_6 *mode_hdr; 2865 struct scsi_mode_blk_desc *mode_blk; 2866 sa_comp_t *ccomp, *cpage; 2867 int buff_mode; 2868 union ccb *ccb = NULL; 2869 int error; 2870 2871 softc = (struct sa_softc *)periph->softc; 2872 2873 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2874 if (ccomp == NULL) 2875 return (ENOMEM); 2876 2877 /* 2878 * Since it doesn't make sense to set the number of blocks, or 2879 * write protection, we won't try to get the current value. We 2880 * always want to get the blocksize, so we can set it back to the 2881 * proper value. 2882 */ 2883 error = sagetparams(periph, 2884 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2885 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2886 ¤t_speed, &comp_supported, &comp_enabled, 2887 ¤t_calg, ccomp); 2888 2889 if (error != 0) { 2890 free(ccomp, M_SCSISA); 2891 return (error); 2892 } 2893 2894 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2895 if (params_to_set & SA_PARAM_COMPRESSION) 2896 mode_buffer_len += sizeof (sa_comp_t); 2897 2898 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2899 if (mode_buffer == NULL) { 2900 free(ccomp, M_SCSISA); 2901 return (ENOMEM); 2902 } 2903 2904 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2905 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2906 2907 ccb = cam_periph_getccb(periph, 1); 2908 2909 retry: 2910 2911 if (params_to_set & SA_PARAM_COMPRESSION) { 2912 if (mode_blk) { 2913 cpage = (sa_comp_t *)&mode_blk[1]; 2914 } else { 2915 cpage = (sa_comp_t *)&mode_hdr[1]; 2916 } 2917 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2918 cpage->hdr.pagecode &= ~0x80; 2919 } else 2920 cpage = NULL; 2921 2922 /* 2923 * If the caller wants us to set the blocksize, use the one they 2924 * pass in. Otherwise, use the blocksize we got back from the 2925 * mode select above. 2926 */ 2927 if (mode_blk) { 2928 if (params_to_set & SA_PARAM_BLOCKSIZE) 2929 scsi_ulto3b(blocksize, mode_blk->blklen); 2930 else 2931 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2932 2933 /* 2934 * Set density if requested, else preserve old density. 2935 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2936 * devices, else density we've latched up in our softc. 2937 */ 2938 if (params_to_set & SA_PARAM_DENSITY) { 2939 mode_blk->density = density; 2940 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2941 mode_blk->density = SCSI_SAME_DENSITY; 2942 } else { 2943 mode_blk->density = softc->media_density; 2944 } 2945 } 2946 2947 /* 2948 * For mode selects, these two fields must be zero. 2949 */ 2950 mode_hdr->data_length = 0; 2951 mode_hdr->medium_type = 0; 2952 2953 /* set the speed to the current value */ 2954 mode_hdr->dev_spec = current_speed; 2955 2956 /* if set, set single-initiator buffering mode */ 2957 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2958 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2959 } 2960 2961 if (mode_blk) 2962 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2963 else 2964 mode_hdr->blk_desc_len = 0; 2965 2966 /* 2967 * First, if the user wants us to set the compression algorithm or 2968 * just turn compression on, check to make sure that this drive 2969 * supports compression. 2970 */ 2971 if (params_to_set & SA_PARAM_COMPRESSION) { 2972 /* 2973 * If the compression algorithm is 0, disable compression. 2974 * If the compression algorithm is non-zero, enable 2975 * compression and set the compression type to the 2976 * specified compression algorithm, unless the algorithm is 2977 * MT_COMP_ENABLE. In that case, we look at the 2978 * compression algorithm that is currently set and if it is 2979 * non-zero, we leave it as-is. If it is zero, and we have 2980 * saved a compression algorithm from a time when 2981 * compression was enabled before, set the compression to 2982 * the saved value. 2983 */ 2984 switch (ccomp->hdr.pagecode & ~0x80) { 2985 case SA_DEVICE_CONFIGURATION_PAGE: 2986 { 2987 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2988 if (calg == 0) { 2989 dcp->sel_comp_alg = SA_COMP_NONE; 2990 break; 2991 } 2992 if (calg != MT_COMP_ENABLE) { 2993 dcp->sel_comp_alg = calg; 2994 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2995 softc->saved_comp_algorithm != 0) { 2996 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2997 } 2998 break; 2999 } 3000 case SA_DATA_COMPRESSION_PAGE: 3001 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 3002 struct scsi_data_compression_page *dcp = &cpage->dcomp; 3003 if (calg == 0) { 3004 /* 3005 * Disable compression, but leave the 3006 * decompression and the capability bit 3007 * alone. 3008 */ 3009 dcp->dce_and_dcc = SA_DCP_DCC; 3010 dcp->dde_and_red |= SA_DCP_DDE; 3011 break; 3012 } 3013 /* enable compression && decompression */ 3014 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 3015 dcp->dde_and_red |= SA_DCP_DDE; 3016 /* 3017 * If there, use compression algorithm from caller. 3018 * Otherwise, if there's a saved compression algorithm 3019 * and there is no current algorithm, use the saved 3020 * algorithm. Else parrot back what we got and hope 3021 * for the best. 3022 */ 3023 if (calg != MT_COMP_ENABLE) { 3024 scsi_ulto4b(calg, dcp->comp_algorithm); 3025 scsi_ulto4b(calg, dcp->decomp_algorithm); 3026 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 3027 softc->saved_comp_algorithm != 0) { 3028 scsi_ulto4b(softc->saved_comp_algorithm, 3029 dcp->comp_algorithm); 3030 scsi_ulto4b(softc->saved_comp_algorithm, 3031 dcp->decomp_algorithm); 3032 } 3033 break; 3034 } 3035 /* 3036 * Compression does not appear to be supported- 3037 * at least via the DATA COMPRESSION page. It 3038 * would be too much to ask us to believe that 3039 * the page itself is supported, but incorrectly 3040 * reports an ability to manipulate data compression, 3041 * so we'll assume that this device doesn't support 3042 * compression. We can just fall through for that. 3043 */ 3044 /* FALLTHROUGH */ 3045 default: 3046 /* 3047 * The drive doesn't seem to support compression, 3048 * so turn off the set compression bit. 3049 */ 3050 params_to_set &= ~SA_PARAM_COMPRESSION; 3051 xpt_print(periph->path, 3052 "device does not seem to support compression\n"); 3053 3054 /* 3055 * If that was the only thing the user wanted us to set, 3056 * clean up allocated resources and return with 3057 * 'operation not supported'. 3058 */ 3059 if (params_to_set == SA_PARAM_NONE) { 3060 free(mode_buffer, M_SCSISA); 3061 xpt_release_ccb(ccb); 3062 return (ENODEV); 3063 } 3064 3065 /* 3066 * That wasn't the only thing the user wanted us to set. 3067 * So, decrease the stated mode buffer length by the 3068 * size of the compression mode page. 3069 */ 3070 mode_buffer_len -= sizeof(sa_comp_t); 3071 } 3072 } 3073 3074 /* It is safe to retry this operation */ 3075 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 3076 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 3077 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3078 3079 error = cam_periph_runccb(ccb, saerror, 0, 3080 sense_flags, softc->device_stats); 3081 3082 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3083 int idx; 3084 char *xyz = mode_buffer; 3085 xpt_print_path(periph->path); 3086 printf("Err%d, Mode Select Data=", error); 3087 for (idx = 0; idx < mode_buffer_len; idx++) 3088 printf(" 0x%02x", xyz[idx] & 0xff); 3089 printf("\n"); 3090 } 3091 3092 3093 if (error) { 3094 /* 3095 * If we can, try without setting density/blocksize. 3096 */ 3097 if (mode_blk) { 3098 if ((params_to_set & 3099 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 3100 mode_blk = NULL; 3101 goto retry; 3102 } 3103 } else { 3104 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3105 cpage = (sa_comp_t *)&mode_blk[1]; 3106 } 3107 3108 /* 3109 * If we were setting the blocksize, and that failed, we 3110 * want to set it to its original value. If we weren't 3111 * setting the blocksize, we don't want to change it. 3112 */ 3113 scsi_ulto3b(current_blocksize, mode_blk->blklen); 3114 3115 /* 3116 * Set density if requested, else preserve old density. 3117 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 3118 * devices, else density we've latched up in our softc. 3119 */ 3120 if (params_to_set & SA_PARAM_DENSITY) { 3121 mode_blk->density = current_density; 3122 } else if (softc->scsi_rev > SCSI_REV_CCS) { 3123 mode_blk->density = SCSI_SAME_DENSITY; 3124 } else { 3125 mode_blk->density = softc->media_density; 3126 } 3127 3128 if (params_to_set & SA_PARAM_COMPRESSION) 3129 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3130 3131 /* 3132 * The retry count is the only CCB field that might have been 3133 * changed that we care about, so reset it back to 1. 3134 */ 3135 ccb->ccb_h.retry_count = 1; 3136 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3137 softc->device_stats); 3138 } 3139 3140 xpt_release_ccb(ccb); 3141 3142 if (ccomp != NULL) 3143 free(ccomp, M_SCSISA); 3144 3145 if (params_to_set & SA_PARAM_COMPRESSION) { 3146 if (error) { 3147 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3148 /* 3149 * Even if we get an error setting compression, 3150 * do not say that we don't support it. We could 3151 * have been wrong, or it may be media specific. 3152 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3153 */ 3154 softc->saved_comp_algorithm = softc->comp_algorithm; 3155 softc->comp_algorithm = 0; 3156 } else { 3157 softc->flags |= SA_FLAG_COMP_ENABLED; 3158 softc->comp_algorithm = calg; 3159 } 3160 } 3161 3162 free(mode_buffer, M_SCSISA); 3163 return (error); 3164 } 3165 3166 static void 3167 saprevent(struct cam_periph *periph, int action) 3168 { 3169 struct sa_softc *softc; 3170 union ccb *ccb; 3171 int error, sf; 3172 3173 softc = (struct sa_softc *)periph->softc; 3174 3175 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3176 return; 3177 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3178 return; 3179 3180 /* 3181 * We can be quiet about illegal requests. 3182 */ 3183 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3184 sf = 0; 3185 } else 3186 sf = SF_QUIET_IR; 3187 3188 ccb = cam_periph_getccb(periph, 1); 3189 3190 /* It is safe to retry this operation */ 3191 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3192 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3193 3194 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3195 if (error == 0) { 3196 if (action == PR_ALLOW) 3197 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3198 else 3199 softc->flags |= SA_FLAG_TAPE_LOCKED; 3200 } 3201 3202 xpt_release_ccb(ccb); 3203 } 3204 3205 static int 3206 sarewind(struct cam_periph *periph) 3207 { 3208 union ccb *ccb; 3209 struct sa_softc *softc; 3210 int error; 3211 3212 softc = (struct sa_softc *)periph->softc; 3213 3214 ccb = cam_periph_getccb(periph, 1); 3215 3216 /* It is safe to retry this operation */ 3217 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3218 SSD_FULL_SIZE, REWIND_TIMEOUT); 3219 3220 softc->dsreg = MTIO_DSREG_REW; 3221 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3222 softc->dsreg = MTIO_DSREG_REST; 3223 3224 xpt_release_ccb(ccb); 3225 if (error == 0) 3226 softc->fileno = softc->blkno = (daddr_t) 0; 3227 else 3228 softc->fileno = softc->blkno = (daddr_t) -1; 3229 return (error); 3230 } 3231 3232 static int 3233 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3234 { 3235 union ccb *ccb; 3236 struct sa_softc *softc; 3237 int error; 3238 3239 softc = (struct sa_softc *)periph->softc; 3240 3241 ccb = cam_periph_getccb(periph, 1); 3242 3243 /* This cannot be retried */ 3244 3245 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3246 SSD_FULL_SIZE, SPACE_TIMEOUT); 3247 3248 /* 3249 * Clear residual because we will be using it. 3250 */ 3251 softc->last_ctl_resid = 0; 3252 3253 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3254 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3255 softc->dsreg = MTIO_DSREG_REST; 3256 3257 xpt_release_ccb(ccb); 3258 3259 /* 3260 * If a spacing operation has failed, we need to invalidate 3261 * this mount. 3262 * 3263 * If the spacing operation was setmarks or to end of recorded data, 3264 * we no longer know our relative position. 3265 * 3266 * If the spacing operations was spacing files in reverse, we 3267 * take account of the residual, but still check against less 3268 * than zero- if we've gone negative, we must have hit BOT. 3269 * 3270 * If the spacing operations was spacing records in reverse and 3271 * we have a residual, we've either hit BOT or hit a filemark. 3272 * In the former case, we know our new record number (0). In 3273 * the latter case, we have absolutely no idea what the real 3274 * record number is- we've stopped between the end of the last 3275 * record in the previous file and the filemark that stopped 3276 * our spacing backwards. 3277 */ 3278 if (error) { 3279 softc->fileno = softc->blkno = (daddr_t) -1; 3280 } else if (code == SS_SETMARKS || code == SS_EOD) { 3281 softc->fileno = softc->blkno = (daddr_t) -1; 3282 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3283 softc->fileno += (count - softc->last_ctl_resid); 3284 if (softc->fileno < 0) /* we must of hit BOT */ 3285 softc->fileno = 0; 3286 softc->blkno = 0; 3287 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3288 softc->blkno += (count - softc->last_ctl_resid); 3289 if (count < 0) { 3290 if (softc->last_ctl_resid || softc->blkno < 0) { 3291 if (softc->fileno == 0) { 3292 softc->blkno = 0; 3293 } else { 3294 softc->blkno = (daddr_t) -1; 3295 } 3296 } 3297 } 3298 } 3299 return (error); 3300 } 3301 3302 static int 3303 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3304 { 3305 union ccb *ccb; 3306 struct sa_softc *softc; 3307 int error, nwm = 0; 3308 3309 softc = (struct sa_softc *)periph->softc; 3310 if (softc->open_rdonly) 3311 return (EBADF); 3312 3313 ccb = cam_periph_getccb(periph, 1); 3314 /* 3315 * Clear residual because we will be using it. 3316 */ 3317 softc->last_ctl_resid = 0; 3318 3319 softc->dsreg = MTIO_DSREG_FMK; 3320 /* this *must* not be retried */ 3321 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3322 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3323 softc->dsreg = MTIO_DSREG_REST; 3324 3325 3326 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3327 3328 if (error == 0 && nmarks) { 3329 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3330 nwm = nmarks - softc->last_ctl_resid; 3331 softc->filemarks += nwm; 3332 } 3333 3334 xpt_release_ccb(ccb); 3335 3336 /* 3337 * Update relative positions (if we're doing that). 3338 */ 3339 if (error) { 3340 softc->fileno = softc->blkno = (daddr_t) -1; 3341 } else if (softc->fileno != (daddr_t) -1) { 3342 softc->fileno += nwm; 3343 softc->blkno = 0; 3344 } 3345 return (error); 3346 } 3347 3348 static int 3349 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3350 { 3351 struct scsi_tape_position_data loc; 3352 union ccb *ccb; 3353 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3354 int error; 3355 3356 /* 3357 * We try and flush any buffered writes here if we were writing 3358 * and we're trying to get hardware block position. It eats 3359 * up performance substantially, but I'm wary of drive firmware. 3360 * 3361 * I think that *logical* block position is probably okay- 3362 * but hardware block position might have to wait for data 3363 * to hit media to be valid. Caveat Emptor. 3364 */ 3365 3366 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3367 error = sawritefilemarks(periph, 0, 0); 3368 if (error && error != EACCES) 3369 return (error); 3370 } 3371 3372 ccb = cam_periph_getccb(periph, 1); 3373 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3374 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3375 softc->dsreg = MTIO_DSREG_RBSY; 3376 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3377 softc->dsreg = MTIO_DSREG_REST; 3378 3379 if (error == 0) { 3380 if (loc.flags & SA_RPOS_UNCERTAIN) { 3381 error = EINVAL; /* nothing is certain */ 3382 } else { 3383 *blkptr = scsi_4btoul(loc.firstblk); 3384 } 3385 } 3386 3387 xpt_release_ccb(ccb); 3388 return (error); 3389 } 3390 3391 static int 3392 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3393 { 3394 union ccb *ccb; 3395 struct sa_softc *softc; 3396 int error; 3397 3398 /* 3399 * We used to try and flush any buffered writes here. 3400 * Now we push this onto user applications to either 3401 * flush the pending writes themselves (via a zero count 3402 * WRITE FILEMARKS command) or they can trust their tape 3403 * drive to do this correctly for them. 3404 */ 3405 3406 softc = (struct sa_softc *)periph->softc; 3407 ccb = cam_periph_getccb(periph, 1); 3408 3409 3410 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3411 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3412 3413 3414 softc->dsreg = MTIO_DSREG_POS; 3415 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3416 softc->dsreg = MTIO_DSREG_REST; 3417 xpt_release_ccb(ccb); 3418 /* 3419 * Note relative file && block number position as now unknown. 3420 */ 3421 softc->fileno = softc->blkno = (daddr_t) -1; 3422 return (error); 3423 } 3424 3425 static int 3426 saretension(struct cam_periph *periph) 3427 { 3428 union ccb *ccb; 3429 struct sa_softc *softc; 3430 int error; 3431 3432 softc = (struct sa_softc *)periph->softc; 3433 3434 ccb = cam_periph_getccb(periph, 1); 3435 3436 /* It is safe to retry this operation */ 3437 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3438 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3439 3440 softc->dsreg = MTIO_DSREG_TEN; 3441 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3442 softc->dsreg = MTIO_DSREG_REST; 3443 3444 xpt_release_ccb(ccb); 3445 if (error == 0) 3446 softc->fileno = softc->blkno = (daddr_t) 0; 3447 else 3448 softc->fileno = softc->blkno = (daddr_t) -1; 3449 return (error); 3450 } 3451 3452 static int 3453 sareservereleaseunit(struct cam_periph *periph, int reserve) 3454 { 3455 union ccb *ccb; 3456 struct sa_softc *softc; 3457 int error; 3458 3459 softc = (struct sa_softc *)periph->softc; 3460 ccb = cam_periph_getccb(periph, 1); 3461 3462 /* It is safe to retry this operation */ 3463 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3464 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3465 softc->dsreg = MTIO_DSREG_RBSY; 3466 error = cam_periph_runccb(ccb, saerror, 0, 3467 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3468 softc->dsreg = MTIO_DSREG_REST; 3469 xpt_release_ccb(ccb); 3470 3471 /* 3472 * If the error was Illegal Request, then the device doesn't support 3473 * RESERVE/RELEASE. This is not an error. 3474 */ 3475 if (error == EINVAL) { 3476 error = 0; 3477 } 3478 3479 return (error); 3480 } 3481 3482 static int 3483 saloadunload(struct cam_periph *periph, int load) 3484 { 3485 union ccb *ccb; 3486 struct sa_softc *softc; 3487 int error; 3488 3489 softc = (struct sa_softc *)periph->softc; 3490 3491 ccb = cam_periph_getccb(periph, 1); 3492 3493 /* It is safe to retry this operation */ 3494 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3495 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3496 3497 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3498 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3499 softc->dsreg = MTIO_DSREG_REST; 3500 xpt_release_ccb(ccb); 3501 3502 if (error || load == 0) 3503 softc->fileno = softc->blkno = (daddr_t) -1; 3504 else if (error == 0) 3505 softc->fileno = softc->blkno = (daddr_t) 0; 3506 return (error); 3507 } 3508 3509 static int 3510 saerase(struct cam_periph *periph, int longerase) 3511 { 3512 3513 union ccb *ccb; 3514 struct sa_softc *softc; 3515 int error; 3516 3517 softc = (struct sa_softc *)periph->softc; 3518 if (softc->open_rdonly) 3519 return (EBADF); 3520 3521 ccb = cam_periph_getccb(periph, 1); 3522 3523 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3524 SSD_FULL_SIZE, ERASE_TIMEOUT); 3525 3526 softc->dsreg = MTIO_DSREG_ZER; 3527 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3528 softc->dsreg = MTIO_DSREG_REST; 3529 3530 xpt_release_ccb(ccb); 3531 return (error); 3532 } 3533 3534 #endif /* _KERNEL */ 3535 3536 /* 3537 * Read tape block limits command. 3538 */ 3539 void 3540 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3541 void (*cbfcnp)(struct cam_periph *, union ccb *), 3542 u_int8_t tag_action, 3543 struct scsi_read_block_limits_data *rlimit_buf, 3544 u_int8_t sense_len, u_int32_t timeout) 3545 { 3546 struct scsi_read_block_limits *scsi_cmd; 3547 3548 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3549 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3550 sizeof(*scsi_cmd), timeout); 3551 3552 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3553 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3554 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3555 } 3556 3557 void 3558 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3559 void (*cbfcnp)(struct cam_periph *, union ccb *), 3560 u_int8_t tag_action, int readop, int sli, 3561 int fixed, u_int32_t length, u_int8_t *data_ptr, 3562 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3563 { 3564 struct scsi_sa_rw *scsi_cmd; 3565 int read; 3566 3567 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 3568 3569 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3570 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 3571 scsi_cmd->sli_fixed = 0; 3572 if (sli && read) 3573 scsi_cmd->sli_fixed |= SAR_SLI; 3574 if (fixed) 3575 scsi_cmd->sli_fixed |= SARW_FIXED; 3576 scsi_ulto3b(length, scsi_cmd->length); 3577 scsi_cmd->control = 0; 3578 3579 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 3580 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 3581 tag_action, data_ptr, dxfer_len, sense_len, 3582 sizeof(*scsi_cmd), timeout); 3583 } 3584 3585 void 3586 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3587 void (*cbfcnp)(struct cam_periph *, union ccb *), 3588 u_int8_t tag_action, int immediate, int eot, 3589 int reten, int load, u_int8_t sense_len, 3590 u_int32_t timeout) 3591 { 3592 struct scsi_load_unload *scsi_cmd; 3593 3594 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3595 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3596 scsi_cmd->opcode = LOAD_UNLOAD; 3597 if (immediate) 3598 scsi_cmd->immediate = SLU_IMMED; 3599 if (eot) 3600 scsi_cmd->eot_reten_load |= SLU_EOT; 3601 if (reten) 3602 scsi_cmd->eot_reten_load |= SLU_RETEN; 3603 if (load) 3604 scsi_cmd->eot_reten_load |= SLU_LOAD; 3605 3606 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3607 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3608 } 3609 3610 void 3611 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3612 void (*cbfcnp)(struct cam_periph *, union ccb *), 3613 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3614 u_int32_t timeout) 3615 { 3616 struct scsi_rewind *scsi_cmd; 3617 3618 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3619 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3620 scsi_cmd->opcode = REWIND; 3621 if (immediate) 3622 scsi_cmd->immediate = SREW_IMMED; 3623 3624 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3625 0, sense_len, sizeof(*scsi_cmd), timeout); 3626 } 3627 3628 void 3629 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3630 void (*cbfcnp)(struct cam_periph *, union ccb *), 3631 u_int8_t tag_action, scsi_space_code code, 3632 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3633 { 3634 struct scsi_space *scsi_cmd; 3635 3636 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3637 scsi_cmd->opcode = SPACE; 3638 scsi_cmd->code = code; 3639 scsi_ulto3b(count, scsi_cmd->count); 3640 scsi_cmd->control = 0; 3641 3642 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3643 0, sense_len, sizeof(*scsi_cmd), timeout); 3644 } 3645 3646 void 3647 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3648 void (*cbfcnp)(struct cam_periph *, union ccb *), 3649 u_int8_t tag_action, int immediate, int setmark, 3650 u_int32_t num_marks, u_int8_t sense_len, 3651 u_int32_t timeout) 3652 { 3653 struct scsi_write_filemarks *scsi_cmd; 3654 3655 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3656 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3657 scsi_cmd->opcode = WRITE_FILEMARKS; 3658 if (immediate) 3659 scsi_cmd->byte2 |= SWFMRK_IMMED; 3660 if (setmark) 3661 scsi_cmd->byte2 |= SWFMRK_WSMK; 3662 3663 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3664 3665 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3666 0, sense_len, sizeof(*scsi_cmd), timeout); 3667 } 3668 3669 /* 3670 * The reserve and release unit commands differ only by their opcodes. 3671 */ 3672 void 3673 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3674 void (*cbfcnp)(struct cam_periph *, union ccb *), 3675 u_int8_t tag_action, int third_party, 3676 int third_party_id, u_int8_t sense_len, 3677 u_int32_t timeout, int reserve) 3678 { 3679 struct scsi_reserve_release_unit *scsi_cmd; 3680 3681 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3682 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3683 3684 if (reserve) 3685 scsi_cmd->opcode = RESERVE_UNIT; 3686 else 3687 scsi_cmd->opcode = RELEASE_UNIT; 3688 3689 if (third_party) { 3690 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3691 scsi_cmd->lun_thirdparty |= 3692 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3693 } 3694 3695 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3696 0, sense_len, sizeof(*scsi_cmd), timeout); 3697 } 3698 3699 void 3700 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3701 void (*cbfcnp)(struct cam_periph *, union ccb *), 3702 u_int8_t tag_action, int immediate, int long_erase, 3703 u_int8_t sense_len, u_int32_t timeout) 3704 { 3705 struct scsi_erase *scsi_cmd; 3706 3707 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3708 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3709 3710 scsi_cmd->opcode = ERASE; 3711 3712 if (immediate) 3713 scsi_cmd->lun_imm_long |= SE_IMMED; 3714 3715 if (long_erase) 3716 scsi_cmd->lun_imm_long |= SE_LONG; 3717 3718 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3719 0, sense_len, sizeof(*scsi_cmd), timeout); 3720 } 3721 3722 /* 3723 * Read Tape Position command. 3724 */ 3725 void 3726 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3727 void (*cbfcnp)(struct cam_periph *, union ccb *), 3728 u_int8_t tag_action, int hardsoft, 3729 struct scsi_tape_position_data *sbp, 3730 u_int8_t sense_len, u_int32_t timeout) 3731 { 3732 struct scsi_tape_read_position *scmd; 3733 3734 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3735 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3736 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3737 bzero(scmd, sizeof(*scmd)); 3738 scmd->opcode = READ_POSITION; 3739 scmd->byte1 = hardsoft; 3740 } 3741 3742 /* 3743 * Set Tape Position command. 3744 */ 3745 void 3746 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3747 void (*cbfcnp)(struct cam_periph *, union ccb *), 3748 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3749 u_int8_t sense_len, u_int32_t timeout) 3750 { 3751 struct scsi_tape_locate *scmd; 3752 3753 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3754 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3755 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3756 bzero(scmd, sizeof(*scmd)); 3757 scmd->opcode = LOCATE; 3758 if (hardsoft) 3759 scmd->byte1 |= SA_SPOS_BT; 3760 scsi_ulto4b(blkno, scmd->blkaddr); 3761 } 3762