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_WAITING 0x1 118 #define SA_CCB_TYPEMASK 0x1 119 #define SA_POSITION_UPDATED 0x2 120 121 #define Set_CCB_Type(x, type) \ 122 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 123 x->ccb_h.ccb_pflags |= type 124 125 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 126 127 128 129 typedef enum { 130 SA_FLAG_OPEN = 0x0001, 131 SA_FLAG_FIXED = 0x0002, 132 SA_FLAG_TAPE_LOCKED = 0x0004, 133 SA_FLAG_TAPE_MOUNTED = 0x0008, 134 SA_FLAG_TAPE_WP = 0x0010, 135 SA_FLAG_TAPE_WRITTEN = 0x0020, 136 SA_FLAG_EOM_PENDING = 0x0040, 137 SA_FLAG_EIO_PENDING = 0x0080, 138 SA_FLAG_EOF_PENDING = 0x0100, 139 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 140 SA_FLAG_EOF_PENDING), 141 SA_FLAG_INVALID = 0x0200, 142 SA_FLAG_COMP_ENABLED = 0x0400, 143 SA_FLAG_COMP_SUPP = 0x0800, 144 SA_FLAG_COMP_UNSUPP = 0x1000, 145 SA_FLAG_TAPE_FROZEN = 0x2000 146 } sa_flags; 147 148 typedef enum { 149 SA_MODE_REWIND = 0x00, 150 SA_MODE_NOREWIND = 0x01, 151 SA_MODE_OFFLINE = 0x02 152 } sa_mode; 153 154 typedef enum { 155 SA_PARAM_NONE = 0x00, 156 SA_PARAM_BLOCKSIZE = 0x01, 157 SA_PARAM_DENSITY = 0x02, 158 SA_PARAM_COMPRESSION = 0x04, 159 SA_PARAM_BUFF_MODE = 0x08, 160 SA_PARAM_NUMBLOCKS = 0x10, 161 SA_PARAM_WP = 0x20, 162 SA_PARAM_SPEED = 0x40, 163 SA_PARAM_ALL = 0x7f 164 } sa_params; 165 166 typedef enum { 167 SA_QUIRK_NONE = 0x00, 168 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 169 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 170 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 171 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 172 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 173 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 174 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 175 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 176 } sa_quirks; 177 178 #define SA_QUIRK_BIT_STRING \ 179 "\020" \ 180 "\001NOCOMP" \ 181 "\002FIXED" \ 182 "\003VARIABLE" \ 183 "\0042FM" \ 184 "\0051FM" \ 185 "\006NODREAD" \ 186 "\007NO_MODESEL" \ 187 "\010NO_CPAGE" 188 189 #define SAMODE(z) (dev2unit(z) & 0x3) 190 #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) 191 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 192 193 #define SA_NOT_CTLDEV 0 194 #define SA_CTLDEV 1 195 196 #define SA_ATYPE_R 0 197 #define SA_ATYPE_NR 1 198 #define SA_ATYPE_ER 2 199 200 #define SAMINOR(ctl, mode, access) \ 201 ((ctl << 4) | (mode << 2) | (access & 0x3)) 202 203 #define SA_NUM_MODES 4 204 struct sa_devs { 205 struct cdev *ctl_dev; 206 struct sa_mode_devs { 207 struct cdev *r_dev; 208 struct cdev *nr_dev; 209 struct cdev *er_dev; 210 } mode_devs[SA_NUM_MODES]; 211 }; 212 213 struct sa_softc { 214 sa_state state; 215 sa_flags flags; 216 sa_quirks quirks; 217 u_int si_flags; 218 struct bio_queue_head bio_queue; 219 int queue_count; 220 struct devstat *device_stats; 221 struct sa_devs devs; 222 int blk_gran; 223 int blk_mask; 224 int blk_shift; 225 u_int32_t max_blk; 226 u_int32_t min_blk; 227 u_int32_t maxio; 228 u_int32_t cpi_maxio; 229 int allow_io_split; 230 u_int32_t comp_algorithm; 231 u_int32_t saved_comp_algorithm; 232 u_int32_t media_blksize; 233 u_int32_t last_media_blksize; 234 u_int32_t media_numblks; 235 u_int8_t media_density; 236 u_int8_t speed; 237 u_int8_t scsi_rev; 238 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 239 int buffer_mode; 240 int filemarks; 241 union ccb saved_ccb; 242 int last_resid_was_io; 243 244 /* 245 * Relative to BOT Location. 246 */ 247 daddr_t fileno; 248 daddr_t blkno; 249 250 /* 251 * Latched Error Info 252 */ 253 struct { 254 struct scsi_sense_data _last_io_sense; 255 u_int64_t _last_io_resid; 256 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 257 struct scsi_sense_data _last_ctl_sense; 258 u_int64_t _last_ctl_resid; 259 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 260 #define last_io_sense errinfo._last_io_sense 261 #define last_io_resid errinfo._last_io_resid 262 #define last_io_cdb errinfo._last_io_cdb 263 #define last_ctl_sense errinfo._last_ctl_sense 264 #define last_ctl_resid errinfo._last_ctl_resid 265 #define last_ctl_cdb errinfo._last_ctl_cdb 266 } errinfo; 267 /* 268 * Misc other flags/state 269 */ 270 u_int32_t 271 : 29, 272 open_rdonly : 1, /* open read-only */ 273 open_pending_mount : 1, /* open pending mount */ 274 ctrl_mode : 1; /* control device open */ 275 276 struct task sysctl_task; 277 struct sysctl_ctx_list sysctl_ctx; 278 struct sysctl_oid *sysctl_tree; 279 }; 280 281 struct sa_quirk_entry { 282 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 283 sa_quirks quirks; /* specific quirk type */ 284 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 285 }; 286 287 static struct sa_quirk_entry sa_quirk_table[] = 288 { 289 { 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 291 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 292 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 297 }, 298 { 299 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 300 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 301 }, 302 { 303 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 304 "Python*", "*"}, SA_QUIRK_NODREAD, 0 305 }, 306 { 307 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 308 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 309 }, 310 { 311 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 312 "VIPER 2525 25462", "-011"}, 313 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 314 }, 315 { 316 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 317 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 318 }, 319 #if 0 320 { 321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 322 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 323 }, 324 #endif 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 327 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 331 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 332 }, 333 { 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 335 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 336 }, 337 { 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 339 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 343 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 347 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 348 }, 349 { /* jreynold@primenet.com */ 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 351 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 352 }, 353 { /* mike@sentex.net */ 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 355 "STT20000*", "*"}, SA_QUIRK_1FM, 0 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 359 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 363 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 364 }, 365 { 366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 367 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 368 }, 369 { 370 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 371 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 372 }, 373 { 374 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 375 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 376 }, 377 { 378 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 379 " SLR*", "*"}, SA_QUIRK_1FM, 0 380 }, 381 { 382 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 383 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 384 }, 385 { 386 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 387 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 388 } 389 }; 390 391 static d_open_t saopen; 392 static d_close_t saclose; 393 static d_strategy_t sastrategy; 394 static d_ioctl_t saioctl; 395 static periph_init_t sainit; 396 static periph_ctor_t saregister; 397 static periph_oninv_t saoninvalidate; 398 static periph_dtor_t sacleanup; 399 static periph_start_t sastart; 400 static void saasync(void *callback_arg, u_int32_t code, 401 struct cam_path *path, void *arg); 402 static void sadone(struct cam_periph *periph, 403 union ccb *start_ccb); 404 static int saerror(union ccb *ccb, u_int32_t cam_flags, 405 u_int32_t sense_flags); 406 static int samarkswanted(struct cam_periph *); 407 static int sacheckeod(struct cam_periph *periph); 408 static int sagetparams(struct cam_periph *periph, 409 sa_params params_to_get, 410 u_int32_t *blocksize, u_int8_t *density, 411 u_int32_t *numblocks, int *buff_mode, 412 u_int8_t *write_protect, u_int8_t *speed, 413 int *comp_supported, int *comp_enabled, 414 u_int32_t *comp_algorithm, 415 sa_comp_t *comp_page); 416 static int sasetparams(struct cam_periph *periph, 417 sa_params params_to_set, 418 u_int32_t blocksize, u_int8_t density, 419 u_int32_t comp_algorithm, 420 u_int32_t sense_flags); 421 static void saprevent(struct cam_periph *periph, int action); 422 static int sarewind(struct cam_periph *periph); 423 static int saspace(struct cam_periph *periph, int count, 424 scsi_space_code code); 425 static int samount(struct cam_periph *, int, struct cdev *); 426 static int saretension(struct cam_periph *periph); 427 static int sareservereleaseunit(struct cam_periph *periph, 428 int reserve); 429 static int saloadunload(struct cam_periph *periph, int load); 430 static int saerase(struct cam_periph *periph, int longerase); 431 static int sawritefilemarks(struct cam_periph *periph, 432 int nmarks, int setmarks); 433 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 434 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 435 436 437 #ifndef SA_DEFAULT_IO_SPLIT 438 #define SA_DEFAULT_IO_SPLIT 0 439 #endif 440 441 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 442 443 /* 444 * Tunable to allow the user to set a global allow_io_split value. Note 445 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 446 * is bad behavior, because it hides the true tape block size from the 447 * application. 448 */ 449 TUNABLE_INT("kern.cam.sa.allow_io_split", &sa_allow_io_split); 450 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 451 "CAM Sequential Access Tape Driver"); 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, cgd->ccb_h.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, 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 (periph->immediate_priority <= periph->pinfo.priority) { 1726 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1727 ("queuing for immediate ccb\n")); 1728 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1729 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1730 periph_links.sle); 1731 periph->immediate_priority = CAM_PRIORITY_NONE; 1732 wakeup(&periph->ccb_list); 1733 } else if (bp == NULL) { 1734 xpt_release_ccb(start_ccb); 1735 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1736 struct bio *done_bp; 1737 again: 1738 softc->queue_count--; 1739 bioq_remove(&softc->bio_queue, bp); 1740 bp->bio_resid = bp->bio_bcount; 1741 done_bp = bp; 1742 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1743 /* 1744 * We now just clear errors in this case 1745 * and let the residual be the notifier. 1746 */ 1747 bp->bio_error = 0; 1748 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1749 /* 1750 * This can only happen if we're reading 1751 * in fixed length mode. In this case, 1752 * we dump the rest of the list the 1753 * same way. 1754 */ 1755 bp->bio_error = 0; 1756 if (bioq_first(&softc->bio_queue) != NULL) { 1757 biodone(done_bp); 1758 goto again; 1759 } 1760 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1761 bp->bio_error = EIO; 1762 bp->bio_flags |= BIO_ERROR; 1763 } 1764 bp = bioq_first(&softc->bio_queue); 1765 /* 1766 * Only if we have no other buffers queued up 1767 * do we clear the pending error flag. 1768 */ 1769 if (bp == NULL) 1770 softc->flags &= ~SA_FLAG_ERR_PENDING; 1771 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1772 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1773 "%d more buffers queued up\n", 1774 (softc->flags & SA_FLAG_ERR_PENDING), 1775 (bp != NULL)? "not " : " ", softc->queue_count)); 1776 xpt_release_ccb(start_ccb); 1777 biodone(done_bp); 1778 } else { 1779 u_int32_t length; 1780 1781 bioq_remove(&softc->bio_queue, bp); 1782 softc->queue_count--; 1783 1784 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1785 if (softc->blk_shift != 0) { 1786 length = 1787 bp->bio_bcount >> softc->blk_shift; 1788 } else if (softc->media_blksize != 0) { 1789 length = bp->bio_bcount / 1790 softc->media_blksize; 1791 } else { 1792 bp->bio_error = EIO; 1793 xpt_print(periph->path, "zero blocksize" 1794 " for FIXED length writes?\n"); 1795 biodone(bp); 1796 break; 1797 } 1798 #if 0 1799 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1800 ("issuing a %d fixed record %s\n", 1801 length, (bp->bio_cmd == BIO_READ)? "read" : 1802 "write")); 1803 #endif 1804 } else { 1805 length = bp->bio_bcount; 1806 #if 0 1807 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1808 ("issuing a %d variable byte %s\n", 1809 length, (bp->bio_cmd == BIO_READ)? "read" : 1810 "write")); 1811 #endif 1812 } 1813 devstat_start_transaction_bio(softc->device_stats, bp); 1814 /* 1815 * Some people have theorized that we should 1816 * suppress illegal length indication if we are 1817 * running in variable block mode so that we don't 1818 * have to request sense every time our requested 1819 * block size is larger than the written block. 1820 * The residual information from the ccb allows 1821 * us to identify this situation anyway. The only 1822 * problem with this is that we will not get 1823 * information about blocks that are larger than 1824 * our read buffer unless we set the block size 1825 * in the mode page to something other than 0. 1826 * 1827 * I believe that this is a non-issue. If user apps 1828 * don't adjust their read size to match our record 1829 * size, that's just life. Anyway, the typical usage 1830 * would be to issue, e.g., 64KB reads and occasionally 1831 * have to do deal with 512 byte or 1KB intermediate 1832 * records. 1833 */ 1834 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1835 MTIO_DSREG_RD : MTIO_DSREG_WR; 1836 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1837 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 1838 SCSI_RW_READ : SCSI_RW_WRITE) | 1839 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 1840 SCSI_RW_BIO : 0), FALSE, 1841 (softc->flags & SA_FLAG_FIXED) != 0, length, 1842 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 1843 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1844 IO_TIMEOUT); 1845 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1846 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1847 start_ccb->ccb_h.ccb_bp = bp; 1848 bp = bioq_first(&softc->bio_queue); 1849 xpt_action(start_ccb); 1850 } 1851 1852 if (bp != NULL) { 1853 /* Have more work to do, so ensure we stay scheduled */ 1854 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1855 } 1856 break; 1857 } 1858 case SA_STATE_ABNORMAL: 1859 default: 1860 panic("state 0x%x in sastart", softc->state); 1861 break; 1862 } 1863 } 1864 1865 1866 static void 1867 sadone(struct cam_periph *periph, union ccb *done_ccb) 1868 { 1869 struct sa_softc *softc; 1870 struct ccb_scsiio *csio; 1871 1872 softc = (struct sa_softc *)periph->softc; 1873 csio = &done_ccb->csio; 1874 switch (CCB_Type(csio)) { 1875 case SA_CCB_BUFFER_IO: 1876 { 1877 struct bio *bp; 1878 int error; 1879 1880 softc->dsreg = MTIO_DSREG_REST; 1881 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1882 error = 0; 1883 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1884 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1885 /* 1886 * A retry was scheduled, so just return. 1887 */ 1888 return; 1889 } 1890 } 1891 1892 if (error == EIO) { 1893 1894 /* 1895 * Catastrophic error. Mark the tape as frozen 1896 * (we no longer know tape position). 1897 * 1898 * Return all queued I/O with EIO, and unfreeze 1899 * our queue so that future transactions that 1900 * attempt to fix this problem can get to the 1901 * device. 1902 * 1903 */ 1904 1905 softc->flags |= SA_FLAG_TAPE_FROZEN; 1906 bioq_flush(&softc->bio_queue, NULL, EIO); 1907 } 1908 if (error != 0) { 1909 bp->bio_resid = bp->bio_bcount; 1910 bp->bio_error = error; 1911 bp->bio_flags |= BIO_ERROR; 1912 /* 1913 * In the error case, position is updated in saerror. 1914 */ 1915 } else { 1916 bp->bio_resid = csio->resid; 1917 bp->bio_error = 0; 1918 if (csio->resid != 0) { 1919 bp->bio_flags |= BIO_ERROR; 1920 } 1921 if (bp->bio_cmd == BIO_WRITE) { 1922 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1923 softc->filemarks = 0; 1924 } 1925 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1926 (softc->blkno != (daddr_t) -1)) { 1927 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1928 u_int32_t l; 1929 if (softc->blk_shift != 0) { 1930 l = bp->bio_bcount >> 1931 softc->blk_shift; 1932 } else { 1933 l = bp->bio_bcount / 1934 softc->media_blksize; 1935 } 1936 softc->blkno += (daddr_t) l; 1937 } else { 1938 softc->blkno++; 1939 } 1940 } 1941 } 1942 /* 1943 * If we had an error (immediate or pending), 1944 * release the device queue now. 1945 */ 1946 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1947 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1948 if (error || bp->bio_resid) { 1949 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1950 ("error %d resid %ld count %ld\n", error, 1951 bp->bio_resid, bp->bio_bcount)); 1952 } 1953 biofinish(bp, softc->device_stats, 0); 1954 break; 1955 } 1956 case SA_CCB_WAITING: 1957 { 1958 /* Caller will release the CCB */ 1959 wakeup(&done_ccb->ccb_h.cbfcnp); 1960 return; 1961 } 1962 } 1963 xpt_release_ccb(done_ccb); 1964 } 1965 1966 /* 1967 * Mount the tape (make sure it's ready for I/O). 1968 */ 1969 static int 1970 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1971 { 1972 struct sa_softc *softc; 1973 union ccb *ccb; 1974 int error; 1975 1976 /* 1977 * oflags can be checked for 'kind' of open (read-only check) - later 1978 * dev can be checked for a control-mode or compression open - later 1979 */ 1980 UNUSED_PARAMETER(oflags); 1981 UNUSED_PARAMETER(dev); 1982 1983 1984 softc = (struct sa_softc *)periph->softc; 1985 1986 /* 1987 * This should determine if something has happend since the last 1988 * open/mount that would invalidate the mount. We do *not* want 1989 * to retry this command- we just want the status. But we only 1990 * do this if we're mounted already- if we're not mounted, 1991 * we don't care about the unit read state and can instead use 1992 * this opportunity to attempt to reserve the tape unit. 1993 */ 1994 1995 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1996 ccb = cam_periph_getccb(periph, 1); 1997 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1998 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1999 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2000 softc->device_stats); 2001 if (error == ENXIO) { 2002 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2003 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2004 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2005 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2006 softc->device_stats); 2007 } else if (error) { 2008 /* 2009 * We don't need to freeze the tape because we 2010 * will now attempt to rewind/load it. 2011 */ 2012 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2013 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2014 xpt_print(periph->path, 2015 "error %d on TUR in samount\n", error); 2016 } 2017 } 2018 } else { 2019 error = sareservereleaseunit(periph, TRUE); 2020 if (error) { 2021 return (error); 2022 } 2023 ccb = cam_periph_getccb(periph, 1); 2024 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2025 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2026 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2027 softc->device_stats); 2028 } 2029 2030 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2031 struct scsi_read_block_limits_data *rblim = NULL; 2032 int comp_enabled, comp_supported; 2033 u_int8_t write_protect, guessing = 0; 2034 2035 /* 2036 * Clear out old state. 2037 */ 2038 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2039 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 2040 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 2041 softc->filemarks = 0; 2042 2043 /* 2044 * *Very* first off, make sure we're loaded to BOT. 2045 */ 2046 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2047 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2048 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2049 softc->device_stats); 2050 2051 /* 2052 * In case this doesn't work, do a REWIND instead 2053 */ 2054 if (error) { 2055 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2056 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2057 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2058 softc->device_stats); 2059 } 2060 if (error) { 2061 xpt_release_ccb(ccb); 2062 goto exit; 2063 } 2064 2065 /* 2066 * Do a dummy test read to force access to the 2067 * media so that the drive will really know what's 2068 * there. We actually don't really care what the 2069 * blocksize on tape is and don't expect to really 2070 * read a full record. 2071 */ 2072 rblim = (struct scsi_read_block_limits_data *) 2073 malloc(8192, M_SCSISA, M_NOWAIT); 2074 if (rblim == NULL) { 2075 xpt_print(periph->path, "no memory for test read\n"); 2076 xpt_release_ccb(ccb); 2077 error = ENOMEM; 2078 goto exit; 2079 } 2080 2081 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2082 scsi_sa_read_write(&ccb->csio, 0, sadone, 2083 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2084 (void *) rblim, 8192, SSD_FULL_SIZE, 2085 IO_TIMEOUT); 2086 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2087 softc->device_stats); 2088 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2089 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2090 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2091 SF_NO_PRINT | SF_RETRY_UA, 2092 softc->device_stats); 2093 if (error) { 2094 xpt_print(periph->path, 2095 "unable to rewind after test read\n"); 2096 xpt_release_ccb(ccb); 2097 goto exit; 2098 } 2099 } 2100 2101 /* 2102 * Next off, determine block limits. 2103 */ 2104 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2105 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2106 2107 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2108 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2109 2110 xpt_release_ccb(ccb); 2111 2112 if (error != 0) { 2113 /* 2114 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2115 * a MANDATORY command. Anyway- it doesn't matter- 2116 * we can proceed anyway. 2117 */ 2118 softc->blk_gran = 0; 2119 softc->max_blk = ~0; 2120 softc->min_blk = 0; 2121 } else { 2122 if (softc->scsi_rev >= SCSI_REV_SPC) { 2123 softc->blk_gran = RBL_GRAN(rblim); 2124 } else { 2125 softc->blk_gran = 0; 2126 } 2127 /* 2128 * We take max_blk == min_blk to mean a default to 2129 * fixed mode- but note that whatever we get out of 2130 * sagetparams below will actually determine whether 2131 * we are actually *in* fixed mode. 2132 */ 2133 softc->max_blk = scsi_3btoul(rblim->maximum); 2134 softc->min_blk = scsi_2btoul(rblim->minimum); 2135 2136 2137 } 2138 /* 2139 * Next, perform a mode sense to determine 2140 * current density, blocksize, compression etc. 2141 */ 2142 error = sagetparams(periph, SA_PARAM_ALL, 2143 &softc->media_blksize, 2144 &softc->media_density, 2145 &softc->media_numblks, 2146 &softc->buffer_mode, &write_protect, 2147 &softc->speed, &comp_supported, 2148 &comp_enabled, &softc->comp_algorithm, 2149 NULL); 2150 2151 if (error != 0) { 2152 /* 2153 * We could work a little harder here. We could 2154 * adjust our attempts to get information. It 2155 * might be an ancient tape drive. If someone 2156 * nudges us, we'll do that. 2157 */ 2158 goto exit; 2159 } 2160 2161 /* 2162 * If no quirk has determined that this is a device that is 2163 * preferred to be in fixed or variable mode, now is the time 2164 * to find out. 2165 */ 2166 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2167 guessing = 1; 2168 /* 2169 * This could be expensive to find out. Luckily we 2170 * only need to do this once. If we start out in 2171 * 'default' mode, try and set ourselves to one 2172 * of the densities that would determine a wad 2173 * of other stuff. Go from highest to lowest. 2174 */ 2175 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2176 int i; 2177 static u_int8_t ctry[] = { 2178 SCSI_DENSITY_HALFINCH_PE, 2179 SCSI_DENSITY_HALFINCH_6250C, 2180 SCSI_DENSITY_HALFINCH_6250, 2181 SCSI_DENSITY_HALFINCH_1600, 2182 SCSI_DENSITY_HALFINCH_800, 2183 SCSI_DENSITY_QIC_4GB, 2184 SCSI_DENSITY_QIC_2GB, 2185 SCSI_DENSITY_QIC_525_320, 2186 SCSI_DENSITY_QIC_150, 2187 SCSI_DENSITY_QIC_120, 2188 SCSI_DENSITY_QIC_24, 2189 SCSI_DENSITY_QIC_11_9TRK, 2190 SCSI_DENSITY_QIC_11_4TRK, 2191 SCSI_DENSITY_QIC_1320, 2192 SCSI_DENSITY_QIC_3080, 2193 0 2194 }; 2195 for (i = 0; ctry[i]; i++) { 2196 error = sasetparams(periph, 2197 SA_PARAM_DENSITY, 0, ctry[i], 2198 0, SF_NO_PRINT); 2199 if (error == 0) { 2200 softc->media_density = ctry[i]; 2201 break; 2202 } 2203 } 2204 } 2205 switch (softc->media_density) { 2206 case SCSI_DENSITY_QIC_11_4TRK: 2207 case SCSI_DENSITY_QIC_11_9TRK: 2208 case SCSI_DENSITY_QIC_24: 2209 case SCSI_DENSITY_QIC_120: 2210 case SCSI_DENSITY_QIC_150: 2211 case SCSI_DENSITY_QIC_525_320: 2212 case SCSI_DENSITY_QIC_1320: 2213 case SCSI_DENSITY_QIC_3080: 2214 softc->quirks &= ~SA_QUIRK_2FM; 2215 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2216 softc->last_media_blksize = 512; 2217 break; 2218 case SCSI_DENSITY_QIC_4GB: 2219 case SCSI_DENSITY_QIC_2GB: 2220 softc->quirks &= ~SA_QUIRK_2FM; 2221 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2222 softc->last_media_blksize = 1024; 2223 break; 2224 default: 2225 softc->last_media_blksize = 2226 softc->media_blksize; 2227 softc->quirks |= SA_QUIRK_VARIABLE; 2228 break; 2229 } 2230 } 2231 2232 /* 2233 * If no quirk has determined that this is a device that needs 2234 * to have 2 Filemarks at EOD, now is the time to find out. 2235 */ 2236 2237 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2238 switch (softc->media_density) { 2239 case SCSI_DENSITY_HALFINCH_800: 2240 case SCSI_DENSITY_HALFINCH_1600: 2241 case SCSI_DENSITY_HALFINCH_6250: 2242 case SCSI_DENSITY_HALFINCH_6250C: 2243 case SCSI_DENSITY_HALFINCH_PE: 2244 softc->quirks &= ~SA_QUIRK_1FM; 2245 softc->quirks |= SA_QUIRK_2FM; 2246 break; 2247 default: 2248 break; 2249 } 2250 } 2251 2252 /* 2253 * Now validate that some info we got makes sense. 2254 */ 2255 if ((softc->max_blk < softc->media_blksize) || 2256 (softc->min_blk > softc->media_blksize && 2257 softc->media_blksize)) { 2258 xpt_print(periph->path, 2259 "BLOCK LIMITS (%d..%d) could not match current " 2260 "block settings (%d)- adjusting\n", softc->min_blk, 2261 softc->max_blk, softc->media_blksize); 2262 softc->max_blk = softc->min_blk = 2263 softc->media_blksize; 2264 } 2265 2266 /* 2267 * Now put ourselves into the right frame of mind based 2268 * upon quirks... 2269 */ 2270 tryagain: 2271 /* 2272 * If we want to be in FIXED mode and our current blocksize 2273 * is not equal to our last blocksize (if nonzero), try and 2274 * set ourselves to this last blocksize (as the 'preferred' 2275 * block size). The initial quirkmatch at registry sets the 2276 * initial 'last' blocksize. If, for whatever reason, this 2277 * 'last' blocksize is zero, set the blocksize to 512, 2278 * or min_blk if that's larger. 2279 */ 2280 if ((softc->quirks & SA_QUIRK_FIXED) && 2281 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2282 (softc->media_blksize != softc->last_media_blksize)) { 2283 softc->media_blksize = softc->last_media_blksize; 2284 if (softc->media_blksize == 0) { 2285 softc->media_blksize = 512; 2286 if (softc->media_blksize < softc->min_blk) { 2287 softc->media_blksize = softc->min_blk; 2288 } 2289 } 2290 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2291 softc->media_blksize, 0, 0, SF_NO_PRINT); 2292 if (error) { 2293 xpt_print(periph->path, 2294 "unable to set fixed blocksize to %d\n", 2295 softc->media_blksize); 2296 goto exit; 2297 } 2298 } 2299 2300 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2301 (softc->media_blksize != 0)) { 2302 softc->last_media_blksize = softc->media_blksize; 2303 softc->media_blksize = 0; 2304 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2305 0, 0, 0, SF_NO_PRINT); 2306 if (error) { 2307 /* 2308 * If this fails and we were guessing, just 2309 * assume that we got it wrong and go try 2310 * fixed block mode. Don't even check against 2311 * density code at this point. 2312 */ 2313 if (guessing) { 2314 softc->quirks &= ~SA_QUIRK_VARIABLE; 2315 softc->quirks |= SA_QUIRK_FIXED; 2316 if (softc->last_media_blksize == 0) 2317 softc->last_media_blksize = 512; 2318 goto tryagain; 2319 } 2320 xpt_print(periph->path, 2321 "unable to set variable blocksize\n"); 2322 goto exit; 2323 } 2324 } 2325 2326 /* 2327 * Now that we have the current block size, 2328 * set up some parameters for sastart's usage. 2329 */ 2330 if (softc->media_blksize) { 2331 softc->flags |= SA_FLAG_FIXED; 2332 if (powerof2(softc->media_blksize)) { 2333 softc->blk_shift = 2334 ffs(softc->media_blksize) - 1; 2335 softc->blk_mask = softc->media_blksize - 1; 2336 } else { 2337 softc->blk_mask = ~0; 2338 softc->blk_shift = 0; 2339 } 2340 } else { 2341 /* 2342 * The SCSI-3 spec allows 0 to mean "unspecified". 2343 * The SCSI-1 spec allows 0 to mean 'infinite'. 2344 * 2345 * Either works here. 2346 */ 2347 if (softc->max_blk == 0) { 2348 softc->max_blk = ~0; 2349 } 2350 softc->blk_shift = 0; 2351 if (softc->blk_gran != 0) { 2352 softc->blk_mask = softc->blk_gran - 1; 2353 } else { 2354 softc->blk_mask = 0; 2355 } 2356 } 2357 2358 if (write_protect) 2359 softc->flags |= SA_FLAG_TAPE_WP; 2360 2361 if (comp_supported) { 2362 if (softc->saved_comp_algorithm == 0) 2363 softc->saved_comp_algorithm = 2364 softc->comp_algorithm; 2365 softc->flags |= SA_FLAG_COMP_SUPP; 2366 if (comp_enabled) 2367 softc->flags |= SA_FLAG_COMP_ENABLED; 2368 } else 2369 softc->flags |= SA_FLAG_COMP_UNSUPP; 2370 2371 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2372 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2373 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2374 0, 0, SF_NO_PRINT); 2375 if (error == 0) { 2376 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2377 } else { 2378 xpt_print(periph->path, 2379 "unable to set buffered mode\n"); 2380 } 2381 error = 0; /* not an error */ 2382 } 2383 2384 2385 if (error == 0) { 2386 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2387 } 2388 exit: 2389 if (rblim != NULL) 2390 free(rblim, M_SCSISA); 2391 2392 if (error != 0) { 2393 softc->dsreg = MTIO_DSREG_NIL; 2394 } else { 2395 softc->fileno = softc->blkno = 0; 2396 softc->dsreg = MTIO_DSREG_REST; 2397 } 2398 #ifdef SA_1FM_AT_EOD 2399 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2400 softc->quirks |= SA_QUIRK_1FM; 2401 #else 2402 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2403 softc->quirks |= SA_QUIRK_2FM; 2404 #endif 2405 } else 2406 xpt_release_ccb(ccb); 2407 2408 /* 2409 * If we return an error, we're not mounted any more, 2410 * so release any device reservation. 2411 */ 2412 if (error != 0) { 2413 (void) sareservereleaseunit(periph, FALSE); 2414 } else { 2415 /* 2416 * Clear I/O residual. 2417 */ 2418 softc->last_io_resid = 0; 2419 softc->last_ctl_resid = 0; 2420 } 2421 return (error); 2422 } 2423 2424 /* 2425 * How many filemarks do we need to write if we were to terminate the 2426 * tape session right now? Note that this can be a negative number 2427 */ 2428 2429 static int 2430 samarkswanted(struct cam_periph *periph) 2431 { 2432 int markswanted; 2433 struct sa_softc *softc; 2434 2435 softc = (struct sa_softc *)periph->softc; 2436 markswanted = 0; 2437 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2438 markswanted++; 2439 if (softc->quirks & SA_QUIRK_2FM) 2440 markswanted++; 2441 } 2442 markswanted -= softc->filemarks; 2443 return (markswanted); 2444 } 2445 2446 static int 2447 sacheckeod(struct cam_periph *periph) 2448 { 2449 int error; 2450 int markswanted; 2451 2452 markswanted = samarkswanted(periph); 2453 2454 if (markswanted > 0) { 2455 error = sawritefilemarks(periph, markswanted, FALSE); 2456 } else { 2457 error = 0; 2458 } 2459 return (error); 2460 } 2461 2462 static int 2463 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2464 { 2465 static const char *toobig = 2466 "%d-byte tape record bigger than supplied buffer\n"; 2467 struct cam_periph *periph; 2468 struct sa_softc *softc; 2469 struct ccb_scsiio *csio; 2470 struct scsi_sense_data *sense; 2471 uint64_t resid = 0; 2472 int64_t info = 0; 2473 cam_status status; 2474 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 2475 int sense_len; 2476 uint8_t stream_bits; 2477 2478 periph = xpt_path_periph(ccb->ccb_h.path); 2479 softc = (struct sa_softc *)periph->softc; 2480 csio = &ccb->csio; 2481 sense = &csio->sense_data; 2482 sense_len = csio->sense_len - csio->sense_resid; 2483 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 2484 &asc, &ascq, /*show_errors*/ 1); 2485 if (asc != -1 && ascq != -1) 2486 aqvalid = 1; 2487 else 2488 aqvalid = 0; 2489 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 2490 stream_valid = 1; 2491 else 2492 stream_valid = 0; 2493 error = 0; 2494 2495 status = csio->ccb_h.status & CAM_STATUS_MASK; 2496 2497 /* 2498 * Calculate/latch up, any residuals... We do this in a funny 2-step 2499 * so we can print stuff here if we have CAM_DEBUG enabled for this 2500 * unit. 2501 */ 2502 if (status == CAM_SCSI_STATUS_ERROR) { 2503 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 2504 &info) == 0) { 2505 if ((softc->flags & SA_FLAG_FIXED) != 0) 2506 resid *= softc->media_blksize; 2507 } else { 2508 resid = csio->dxfer_len; 2509 info = resid; 2510 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2511 if (softc->media_blksize) 2512 info /= softc->media_blksize; 2513 } 2514 } 2515 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2516 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2517 sizeof (struct scsi_sense_data)); 2518 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2519 (int) csio->cdb_len); 2520 softc->last_io_resid = resid; 2521 softc->last_resid_was_io = 1; 2522 } else { 2523 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2524 sizeof (struct scsi_sense_data)); 2525 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2526 (int) csio->cdb_len); 2527 softc->last_ctl_resid = resid; 2528 softc->last_resid_was_io = 0; 2529 } 2530 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2531 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 2532 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2533 sense_key, asc, ascq, status, 2534 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 2535 csio->dxfer_len)); 2536 } else { 2537 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2538 ("Cam Status 0x%x\n", status)); 2539 } 2540 2541 switch (status) { 2542 case CAM_REQ_CMP: 2543 return (0); 2544 case CAM_SCSI_STATUS_ERROR: 2545 /* 2546 * If a read/write command, we handle it here. 2547 */ 2548 if (CCB_Type(csio) != SA_CCB_WAITING) { 2549 break; 2550 } 2551 /* 2552 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2553 * on a non read/write command, we assume it's not an error 2554 * and propagate the residule and return. 2555 */ 2556 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2557 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2558 csio->resid = resid; 2559 QFRLS(ccb); 2560 return (0); 2561 } 2562 /* 2563 * Otherwise, we let the common code handle this. 2564 */ 2565 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2566 2567 /* 2568 * XXX: To Be Fixed 2569 * We cannot depend upon CAM honoring retry counts for these. 2570 */ 2571 case CAM_SCSI_BUS_RESET: 2572 case CAM_BDR_SENT: 2573 if (ccb->ccb_h.retry_count <= 0) { 2574 return (EIO); 2575 } 2576 /* FALLTHROUGH */ 2577 default: 2578 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2579 } 2580 2581 /* 2582 * Handle filemark, end of tape, mismatched record sizes.... 2583 * From this point out, we're only handling read/write cases. 2584 * Handle writes && reads differently. 2585 */ 2586 2587 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2588 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2589 csio->resid = resid; 2590 error = ENOSPC; 2591 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 2592 softc->flags |= SA_FLAG_EOM_PENDING; 2593 /* 2594 * Grotesque as it seems, the few times 2595 * I've actually seen a non-zero resid, 2596 * the tape drive actually lied and had 2597 * written all the data!. 2598 */ 2599 csio->resid = 0; 2600 } 2601 } else { 2602 csio->resid = resid; 2603 if (sense_key == SSD_KEY_BLANK_CHECK) { 2604 if (softc->quirks & SA_QUIRK_1FM) { 2605 error = 0; 2606 softc->flags |= SA_FLAG_EOM_PENDING; 2607 } else { 2608 error = EIO; 2609 } 2610 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 2611 if (softc->flags & SA_FLAG_FIXED) { 2612 error = -1; 2613 softc->flags |= SA_FLAG_EOF_PENDING; 2614 } 2615 /* 2616 * Unconditionally, if we detected a filemark on a read, 2617 * mark that we've run moved a file ahead. 2618 */ 2619 if (softc->fileno != (daddr_t) -1) { 2620 softc->fileno++; 2621 softc->blkno = 0; 2622 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2623 } 2624 } 2625 } 2626 2627 /* 2628 * Incorrect Length usually applies to read, but can apply to writes. 2629 */ 2630 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 2631 if (info < 0) { 2632 xpt_print(csio->ccb_h.path, toobig, 2633 csio->dxfer_len - info); 2634 csio->resid = csio->dxfer_len; 2635 error = EIO; 2636 } else { 2637 csio->resid = resid; 2638 if (softc->flags & SA_FLAG_FIXED) { 2639 softc->flags |= SA_FLAG_EIO_PENDING; 2640 } 2641 /* 2642 * Bump the block number if we hadn't seen a filemark. 2643 * Do this independent of errors (we've moved anyway). 2644 */ 2645 if ((stream_valid == 0) || 2646 (stream_bits & SSD_FILEMARK) == 0) { 2647 if (softc->blkno != (daddr_t) -1) { 2648 softc->blkno++; 2649 csio->ccb_h.ccb_pflags |= 2650 SA_POSITION_UPDATED; 2651 } 2652 } 2653 } 2654 } 2655 2656 if (error <= 0) { 2657 /* 2658 * Unfreeze the queue if frozen as we're not returning anything 2659 * to our waiters that would indicate an I/O error has occurred 2660 * (yet). 2661 */ 2662 QFRLS(ccb); 2663 error = 0; 2664 } 2665 return (error); 2666 } 2667 2668 static int 2669 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2670 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2671 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2672 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2673 sa_comp_t *tcs) 2674 { 2675 union ccb *ccb; 2676 void *mode_buffer; 2677 struct scsi_mode_header_6 *mode_hdr; 2678 struct scsi_mode_blk_desc *mode_blk; 2679 int mode_buffer_len; 2680 struct sa_softc *softc; 2681 u_int8_t cpage; 2682 int error; 2683 cam_status status; 2684 2685 softc = (struct sa_softc *)periph->softc; 2686 ccb = cam_periph_getccb(periph, 1); 2687 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2688 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2689 else 2690 cpage = SA_DATA_COMPRESSION_PAGE; 2691 2692 retry: 2693 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2694 2695 if (params_to_get & SA_PARAM_COMPRESSION) { 2696 if (softc->quirks & SA_QUIRK_NOCOMP) { 2697 *comp_supported = FALSE; 2698 params_to_get &= ~SA_PARAM_COMPRESSION; 2699 } else 2700 mode_buffer_len += sizeof (sa_comp_t); 2701 } 2702 2703 /* XXX Fix M_NOWAIT */ 2704 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2705 if (mode_buffer == NULL) { 2706 xpt_release_ccb(ccb); 2707 return (ENOMEM); 2708 } 2709 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2710 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2711 2712 /* it is safe to retry this */ 2713 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2714 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2715 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2716 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2717 2718 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2719 softc->device_stats); 2720 2721 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2722 2723 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2724 /* 2725 * Hmm. Let's see if we can try another page... 2726 * If we've already done that, give up on compression 2727 * for this device and remember this for the future 2728 * and attempt the request without asking for compression 2729 * info. 2730 */ 2731 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2732 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2733 goto retry; 2734 } 2735 softc->quirks |= SA_QUIRK_NOCOMP; 2736 free(mode_buffer, M_SCSISA); 2737 goto retry; 2738 } else if (status == CAM_SCSI_STATUS_ERROR) { 2739 /* Tell the user about the fatal error. */ 2740 scsi_sense_print(&ccb->csio); 2741 goto sagetparamsexit; 2742 } 2743 2744 /* 2745 * If the user only wants the compression information, and 2746 * the device doesn't send back the block descriptor, it's 2747 * no big deal. If the user wants more than just 2748 * compression, though, and the device doesn't pass back the 2749 * block descriptor, we need to send another mode sense to 2750 * get the block descriptor. 2751 */ 2752 if ((mode_hdr->blk_desc_len == 0) && 2753 (params_to_get & SA_PARAM_COMPRESSION) && 2754 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2755 2756 /* 2757 * Decrease the mode buffer length by the size of 2758 * the compression page, to make sure the data 2759 * there doesn't get overwritten. 2760 */ 2761 mode_buffer_len -= sizeof (sa_comp_t); 2762 2763 /* 2764 * Now move the compression page that we presumably 2765 * got back down the memory chunk a little bit so 2766 * it doesn't get spammed. 2767 */ 2768 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2769 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2770 2771 /* 2772 * Now, we issue another mode sense and just ask 2773 * for the block descriptor, etc. 2774 */ 2775 2776 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2777 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2778 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2779 SCSIOP_TIMEOUT); 2780 2781 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2782 softc->device_stats); 2783 2784 if (error != 0) 2785 goto sagetparamsexit; 2786 } 2787 2788 if (params_to_get & SA_PARAM_BLOCKSIZE) 2789 *blocksize = scsi_3btoul(mode_blk->blklen); 2790 2791 if (params_to_get & SA_PARAM_NUMBLOCKS) 2792 *numblocks = scsi_3btoul(mode_blk->nblocks); 2793 2794 if (params_to_get & SA_PARAM_BUFF_MODE) 2795 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2796 2797 if (params_to_get & SA_PARAM_DENSITY) 2798 *density = mode_blk->density; 2799 2800 if (params_to_get & SA_PARAM_WP) 2801 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2802 2803 if (params_to_get & SA_PARAM_SPEED) 2804 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2805 2806 if (params_to_get & SA_PARAM_COMPRESSION) { 2807 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2808 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2809 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2810 *comp_supported = 2811 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2812 *comp_enabled = 2813 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2814 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2815 } else { 2816 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2817 /* 2818 * We don't really know whether this device supports 2819 * Data Compression if the algorithm field is 2820 * zero. Just say we do. 2821 */ 2822 *comp_supported = TRUE; 2823 *comp_enabled = 2824 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2825 *comp_algorithm = cp->sel_comp_alg; 2826 } 2827 if (tcs != NULL) 2828 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2829 } 2830 2831 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2832 int idx; 2833 char *xyz = mode_buffer; 2834 xpt_print_path(periph->path); 2835 printf("Mode Sense Data="); 2836 for (idx = 0; idx < mode_buffer_len; idx++) 2837 printf(" 0x%02x", xyz[idx] & 0xff); 2838 printf("\n"); 2839 } 2840 2841 sagetparamsexit: 2842 2843 xpt_release_ccb(ccb); 2844 free(mode_buffer, M_SCSISA); 2845 return (error); 2846 } 2847 2848 /* 2849 * The purpose of this function is to set one of four different parameters 2850 * for a tape drive: 2851 * - blocksize 2852 * - density 2853 * - compression / compression algorithm 2854 * - buffering mode 2855 * 2856 * The assumption is that this will be called from saioctl(), and therefore 2857 * from a process context. Thus the waiting malloc calls below. If that 2858 * assumption ever changes, the malloc calls should be changed to be 2859 * NOWAIT mallocs. 2860 * 2861 * Any or all of the four parameters may be set when this function is 2862 * called. It should handle setting more than one parameter at once. 2863 */ 2864 static int 2865 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2866 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2867 u_int32_t sense_flags) 2868 { 2869 struct sa_softc *softc; 2870 u_int32_t current_blocksize; 2871 u_int32_t current_calg; 2872 u_int8_t current_density; 2873 u_int8_t current_speed; 2874 int comp_enabled, comp_supported; 2875 void *mode_buffer; 2876 int mode_buffer_len; 2877 struct scsi_mode_header_6 *mode_hdr; 2878 struct scsi_mode_blk_desc *mode_blk; 2879 sa_comp_t *ccomp, *cpage; 2880 int buff_mode; 2881 union ccb *ccb = NULL; 2882 int error; 2883 2884 softc = (struct sa_softc *)periph->softc; 2885 2886 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2887 if (ccomp == NULL) 2888 return (ENOMEM); 2889 2890 /* 2891 * Since it doesn't make sense to set the number of blocks, or 2892 * write protection, we won't try to get the current value. We 2893 * always want to get the blocksize, so we can set it back to the 2894 * proper value. 2895 */ 2896 error = sagetparams(periph, 2897 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2898 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2899 ¤t_speed, &comp_supported, &comp_enabled, 2900 ¤t_calg, ccomp); 2901 2902 if (error != 0) { 2903 free(ccomp, M_SCSISA); 2904 return (error); 2905 } 2906 2907 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2908 if (params_to_set & SA_PARAM_COMPRESSION) 2909 mode_buffer_len += sizeof (sa_comp_t); 2910 2911 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2912 if (mode_buffer == NULL) { 2913 free(ccomp, M_SCSISA); 2914 return (ENOMEM); 2915 } 2916 2917 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2918 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2919 2920 ccb = cam_periph_getccb(periph, 1); 2921 2922 retry: 2923 2924 if (params_to_set & SA_PARAM_COMPRESSION) { 2925 if (mode_blk) { 2926 cpage = (sa_comp_t *)&mode_blk[1]; 2927 } else { 2928 cpage = (sa_comp_t *)&mode_hdr[1]; 2929 } 2930 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2931 cpage->hdr.pagecode &= ~0x80; 2932 } else 2933 cpage = NULL; 2934 2935 /* 2936 * If the caller wants us to set the blocksize, use the one they 2937 * pass in. Otherwise, use the blocksize we got back from the 2938 * mode select above. 2939 */ 2940 if (mode_blk) { 2941 if (params_to_set & SA_PARAM_BLOCKSIZE) 2942 scsi_ulto3b(blocksize, mode_blk->blklen); 2943 else 2944 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2945 2946 /* 2947 * Set density if requested, else preserve old density. 2948 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2949 * devices, else density we've latched up in our softc. 2950 */ 2951 if (params_to_set & SA_PARAM_DENSITY) { 2952 mode_blk->density = density; 2953 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2954 mode_blk->density = SCSI_SAME_DENSITY; 2955 } else { 2956 mode_blk->density = softc->media_density; 2957 } 2958 } 2959 2960 /* 2961 * For mode selects, these two fields must be zero. 2962 */ 2963 mode_hdr->data_length = 0; 2964 mode_hdr->medium_type = 0; 2965 2966 /* set the speed to the current value */ 2967 mode_hdr->dev_spec = current_speed; 2968 2969 /* if set, set single-initiator buffering mode */ 2970 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2971 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2972 } 2973 2974 if (mode_blk) 2975 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2976 else 2977 mode_hdr->blk_desc_len = 0; 2978 2979 /* 2980 * First, if the user wants us to set the compression algorithm or 2981 * just turn compression on, check to make sure that this drive 2982 * supports compression. 2983 */ 2984 if (params_to_set & SA_PARAM_COMPRESSION) { 2985 /* 2986 * If the compression algorithm is 0, disable compression. 2987 * If the compression algorithm is non-zero, enable 2988 * compression and set the compression type to the 2989 * specified compression algorithm, unless the algorithm is 2990 * MT_COMP_ENABLE. In that case, we look at the 2991 * compression algorithm that is currently set and if it is 2992 * non-zero, we leave it as-is. If it is zero, and we have 2993 * saved a compression algorithm from a time when 2994 * compression was enabled before, set the compression to 2995 * the saved value. 2996 */ 2997 switch (ccomp->hdr.pagecode & ~0x80) { 2998 case SA_DEVICE_CONFIGURATION_PAGE: 2999 { 3000 struct scsi_dev_conf_page *dcp = &cpage->dconf; 3001 if (calg == 0) { 3002 dcp->sel_comp_alg = SA_COMP_NONE; 3003 break; 3004 } 3005 if (calg != MT_COMP_ENABLE) { 3006 dcp->sel_comp_alg = calg; 3007 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 3008 softc->saved_comp_algorithm != 0) { 3009 dcp->sel_comp_alg = softc->saved_comp_algorithm; 3010 } 3011 break; 3012 } 3013 case SA_DATA_COMPRESSION_PAGE: 3014 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 3015 struct scsi_data_compression_page *dcp = &cpage->dcomp; 3016 if (calg == 0) { 3017 /* 3018 * Disable compression, but leave the 3019 * decompression and the capability bit 3020 * alone. 3021 */ 3022 dcp->dce_and_dcc = SA_DCP_DCC; 3023 dcp->dde_and_red |= SA_DCP_DDE; 3024 break; 3025 } 3026 /* enable compression && decompression */ 3027 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 3028 dcp->dde_and_red |= SA_DCP_DDE; 3029 /* 3030 * If there, use compression algorithm from caller. 3031 * Otherwise, if there's a saved compression algorithm 3032 * and there is no current algorithm, use the saved 3033 * algorithm. Else parrot back what we got and hope 3034 * for the best. 3035 */ 3036 if (calg != MT_COMP_ENABLE) { 3037 scsi_ulto4b(calg, dcp->comp_algorithm); 3038 scsi_ulto4b(calg, dcp->decomp_algorithm); 3039 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 3040 softc->saved_comp_algorithm != 0) { 3041 scsi_ulto4b(softc->saved_comp_algorithm, 3042 dcp->comp_algorithm); 3043 scsi_ulto4b(softc->saved_comp_algorithm, 3044 dcp->decomp_algorithm); 3045 } 3046 break; 3047 } 3048 /* 3049 * Compression does not appear to be supported- 3050 * at least via the DATA COMPRESSION page. It 3051 * would be too much to ask us to believe that 3052 * the page itself is supported, but incorrectly 3053 * reports an ability to manipulate data compression, 3054 * so we'll assume that this device doesn't support 3055 * compression. We can just fall through for that. 3056 */ 3057 /* FALLTHROUGH */ 3058 default: 3059 /* 3060 * The drive doesn't seem to support compression, 3061 * so turn off the set compression bit. 3062 */ 3063 params_to_set &= ~SA_PARAM_COMPRESSION; 3064 xpt_print(periph->path, 3065 "device does not seem to support compression\n"); 3066 3067 /* 3068 * If that was the only thing the user wanted us to set, 3069 * clean up allocated resources and return with 3070 * 'operation not supported'. 3071 */ 3072 if (params_to_set == SA_PARAM_NONE) { 3073 free(mode_buffer, M_SCSISA); 3074 xpt_release_ccb(ccb); 3075 return (ENODEV); 3076 } 3077 3078 /* 3079 * That wasn't the only thing the user wanted us to set. 3080 * So, decrease the stated mode buffer length by the 3081 * size of the compression mode page. 3082 */ 3083 mode_buffer_len -= sizeof(sa_comp_t); 3084 } 3085 } 3086 3087 /* It is safe to retry this operation */ 3088 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 3089 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 3090 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3091 3092 error = cam_periph_runccb(ccb, saerror, 0, 3093 sense_flags, softc->device_stats); 3094 3095 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3096 int idx; 3097 char *xyz = mode_buffer; 3098 xpt_print_path(periph->path); 3099 printf("Err%d, Mode Select Data=", error); 3100 for (idx = 0; idx < mode_buffer_len; idx++) 3101 printf(" 0x%02x", xyz[idx] & 0xff); 3102 printf("\n"); 3103 } 3104 3105 3106 if (error) { 3107 /* 3108 * If we can, try without setting density/blocksize. 3109 */ 3110 if (mode_blk) { 3111 if ((params_to_set & 3112 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 3113 mode_blk = NULL; 3114 goto retry; 3115 } 3116 } else { 3117 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3118 cpage = (sa_comp_t *)&mode_blk[1]; 3119 } 3120 3121 /* 3122 * If we were setting the blocksize, and that failed, we 3123 * want to set it to its original value. If we weren't 3124 * setting the blocksize, we don't want to change it. 3125 */ 3126 scsi_ulto3b(current_blocksize, mode_blk->blklen); 3127 3128 /* 3129 * Set density if requested, else preserve old density. 3130 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 3131 * devices, else density we've latched up in our softc. 3132 */ 3133 if (params_to_set & SA_PARAM_DENSITY) { 3134 mode_blk->density = current_density; 3135 } else if (softc->scsi_rev > SCSI_REV_CCS) { 3136 mode_blk->density = SCSI_SAME_DENSITY; 3137 } else { 3138 mode_blk->density = softc->media_density; 3139 } 3140 3141 if (params_to_set & SA_PARAM_COMPRESSION) 3142 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3143 3144 /* 3145 * The retry count is the only CCB field that might have been 3146 * changed that we care about, so reset it back to 1. 3147 */ 3148 ccb->ccb_h.retry_count = 1; 3149 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3150 softc->device_stats); 3151 } 3152 3153 xpt_release_ccb(ccb); 3154 3155 if (ccomp != NULL) 3156 free(ccomp, M_SCSISA); 3157 3158 if (params_to_set & SA_PARAM_COMPRESSION) { 3159 if (error) { 3160 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3161 /* 3162 * Even if we get an error setting compression, 3163 * do not say that we don't support it. We could 3164 * have been wrong, or it may be media specific. 3165 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3166 */ 3167 softc->saved_comp_algorithm = softc->comp_algorithm; 3168 softc->comp_algorithm = 0; 3169 } else { 3170 softc->flags |= SA_FLAG_COMP_ENABLED; 3171 softc->comp_algorithm = calg; 3172 } 3173 } 3174 3175 free(mode_buffer, M_SCSISA); 3176 return (error); 3177 } 3178 3179 static void 3180 saprevent(struct cam_periph *periph, int action) 3181 { 3182 struct sa_softc *softc; 3183 union ccb *ccb; 3184 int error, sf; 3185 3186 softc = (struct sa_softc *)periph->softc; 3187 3188 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3189 return; 3190 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3191 return; 3192 3193 /* 3194 * We can be quiet about illegal requests. 3195 */ 3196 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3197 sf = 0; 3198 } else 3199 sf = SF_QUIET_IR; 3200 3201 ccb = cam_periph_getccb(periph, 1); 3202 3203 /* It is safe to retry this operation */ 3204 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3205 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3206 3207 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3208 if (error == 0) { 3209 if (action == PR_ALLOW) 3210 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3211 else 3212 softc->flags |= SA_FLAG_TAPE_LOCKED; 3213 } 3214 3215 xpt_release_ccb(ccb); 3216 } 3217 3218 static int 3219 sarewind(struct cam_periph *periph) 3220 { 3221 union ccb *ccb; 3222 struct sa_softc *softc; 3223 int error; 3224 3225 softc = (struct sa_softc *)periph->softc; 3226 3227 ccb = cam_periph_getccb(periph, 1); 3228 3229 /* It is safe to retry this operation */ 3230 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3231 SSD_FULL_SIZE, REWIND_TIMEOUT); 3232 3233 softc->dsreg = MTIO_DSREG_REW; 3234 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3235 softc->dsreg = MTIO_DSREG_REST; 3236 3237 xpt_release_ccb(ccb); 3238 if (error == 0) 3239 softc->fileno = softc->blkno = (daddr_t) 0; 3240 else 3241 softc->fileno = softc->blkno = (daddr_t) -1; 3242 return (error); 3243 } 3244 3245 static int 3246 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3247 { 3248 union ccb *ccb; 3249 struct sa_softc *softc; 3250 int error; 3251 3252 softc = (struct sa_softc *)periph->softc; 3253 3254 ccb = cam_periph_getccb(periph, 1); 3255 3256 /* This cannot be retried */ 3257 3258 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3259 SSD_FULL_SIZE, SPACE_TIMEOUT); 3260 3261 /* 3262 * Clear residual because we will be using it. 3263 */ 3264 softc->last_ctl_resid = 0; 3265 3266 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3267 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3268 softc->dsreg = MTIO_DSREG_REST; 3269 3270 xpt_release_ccb(ccb); 3271 3272 /* 3273 * If a spacing operation has failed, we need to invalidate 3274 * this mount. 3275 * 3276 * If the spacing operation was setmarks or to end of recorded data, 3277 * we no longer know our relative position. 3278 * 3279 * If the spacing operations was spacing files in reverse, we 3280 * take account of the residual, but still check against less 3281 * than zero- if we've gone negative, we must have hit BOT. 3282 * 3283 * If the spacing operations was spacing records in reverse and 3284 * we have a residual, we've either hit BOT or hit a filemark. 3285 * In the former case, we know our new record number (0). In 3286 * the latter case, we have absolutely no idea what the real 3287 * record number is- we've stopped between the end of the last 3288 * record in the previous file and the filemark that stopped 3289 * our spacing backwards. 3290 */ 3291 if (error) { 3292 softc->fileno = softc->blkno = (daddr_t) -1; 3293 } else if (code == SS_SETMARKS || code == SS_EOD) { 3294 softc->fileno = softc->blkno = (daddr_t) -1; 3295 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3296 softc->fileno += (count - softc->last_ctl_resid); 3297 if (softc->fileno < 0) /* we must of hit BOT */ 3298 softc->fileno = 0; 3299 softc->blkno = 0; 3300 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3301 softc->blkno += (count - softc->last_ctl_resid); 3302 if (count < 0) { 3303 if (softc->last_ctl_resid || softc->blkno < 0) { 3304 if (softc->fileno == 0) { 3305 softc->blkno = 0; 3306 } else { 3307 softc->blkno = (daddr_t) -1; 3308 } 3309 } 3310 } 3311 } 3312 return (error); 3313 } 3314 3315 static int 3316 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3317 { 3318 union ccb *ccb; 3319 struct sa_softc *softc; 3320 int error, nwm = 0; 3321 3322 softc = (struct sa_softc *)periph->softc; 3323 if (softc->open_rdonly) 3324 return (EBADF); 3325 3326 ccb = cam_periph_getccb(periph, 1); 3327 /* 3328 * Clear residual because we will be using it. 3329 */ 3330 softc->last_ctl_resid = 0; 3331 3332 softc->dsreg = MTIO_DSREG_FMK; 3333 /* this *must* not be retried */ 3334 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3335 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3336 softc->dsreg = MTIO_DSREG_REST; 3337 3338 3339 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3340 3341 if (error == 0 && nmarks) { 3342 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3343 nwm = nmarks - softc->last_ctl_resid; 3344 softc->filemarks += nwm; 3345 } 3346 3347 xpt_release_ccb(ccb); 3348 3349 /* 3350 * Update relative positions (if we're doing that). 3351 */ 3352 if (error) { 3353 softc->fileno = softc->blkno = (daddr_t) -1; 3354 } else if (softc->fileno != (daddr_t) -1) { 3355 softc->fileno += nwm; 3356 softc->blkno = 0; 3357 } 3358 return (error); 3359 } 3360 3361 static int 3362 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3363 { 3364 struct scsi_tape_position_data loc; 3365 union ccb *ccb; 3366 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3367 int error; 3368 3369 /* 3370 * We try and flush any buffered writes here if we were writing 3371 * and we're trying to get hardware block position. It eats 3372 * up performance substantially, but I'm wary of drive firmware. 3373 * 3374 * I think that *logical* block position is probably okay- 3375 * but hardware block position might have to wait for data 3376 * to hit media to be valid. Caveat Emptor. 3377 */ 3378 3379 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3380 error = sawritefilemarks(periph, 0, 0); 3381 if (error && error != EACCES) 3382 return (error); 3383 } 3384 3385 ccb = cam_periph_getccb(periph, 1); 3386 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3387 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3388 softc->dsreg = MTIO_DSREG_RBSY; 3389 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3390 softc->dsreg = MTIO_DSREG_REST; 3391 3392 if (error == 0) { 3393 if (loc.flags & SA_RPOS_UNCERTAIN) { 3394 error = EINVAL; /* nothing is certain */ 3395 } else { 3396 *blkptr = scsi_4btoul(loc.firstblk); 3397 } 3398 } 3399 3400 xpt_release_ccb(ccb); 3401 return (error); 3402 } 3403 3404 static int 3405 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3406 { 3407 union ccb *ccb; 3408 struct sa_softc *softc; 3409 int error; 3410 3411 /* 3412 * We used to try and flush any buffered writes here. 3413 * Now we push this onto user applications to either 3414 * flush the pending writes themselves (via a zero count 3415 * WRITE FILEMARKS command) or they can trust their tape 3416 * drive to do this correctly for them. 3417 */ 3418 3419 softc = (struct sa_softc *)periph->softc; 3420 ccb = cam_periph_getccb(periph, 1); 3421 3422 3423 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3424 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3425 3426 3427 softc->dsreg = MTIO_DSREG_POS; 3428 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3429 softc->dsreg = MTIO_DSREG_REST; 3430 xpt_release_ccb(ccb); 3431 /* 3432 * Note relative file && block number position as now unknown. 3433 */ 3434 softc->fileno = softc->blkno = (daddr_t) -1; 3435 return (error); 3436 } 3437 3438 static int 3439 saretension(struct cam_periph *periph) 3440 { 3441 union ccb *ccb; 3442 struct sa_softc *softc; 3443 int error; 3444 3445 softc = (struct sa_softc *)periph->softc; 3446 3447 ccb = cam_periph_getccb(periph, 1); 3448 3449 /* It is safe to retry this operation */ 3450 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3451 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3452 3453 softc->dsreg = MTIO_DSREG_TEN; 3454 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3455 softc->dsreg = MTIO_DSREG_REST; 3456 3457 xpt_release_ccb(ccb); 3458 if (error == 0) 3459 softc->fileno = softc->blkno = (daddr_t) 0; 3460 else 3461 softc->fileno = softc->blkno = (daddr_t) -1; 3462 return (error); 3463 } 3464 3465 static int 3466 sareservereleaseunit(struct cam_periph *periph, int reserve) 3467 { 3468 union ccb *ccb; 3469 struct sa_softc *softc; 3470 int error; 3471 3472 softc = (struct sa_softc *)periph->softc; 3473 ccb = cam_periph_getccb(periph, 1); 3474 3475 /* It is safe to retry this operation */ 3476 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3477 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3478 softc->dsreg = MTIO_DSREG_RBSY; 3479 error = cam_periph_runccb(ccb, saerror, 0, 3480 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3481 softc->dsreg = MTIO_DSREG_REST; 3482 xpt_release_ccb(ccb); 3483 3484 /* 3485 * If the error was Illegal Request, then the device doesn't support 3486 * RESERVE/RELEASE. This is not an error. 3487 */ 3488 if (error == EINVAL) { 3489 error = 0; 3490 } 3491 3492 return (error); 3493 } 3494 3495 static int 3496 saloadunload(struct cam_periph *periph, int load) 3497 { 3498 union ccb *ccb; 3499 struct sa_softc *softc; 3500 int error; 3501 3502 softc = (struct sa_softc *)periph->softc; 3503 3504 ccb = cam_periph_getccb(periph, 1); 3505 3506 /* It is safe to retry this operation */ 3507 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3508 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3509 3510 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3511 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3512 softc->dsreg = MTIO_DSREG_REST; 3513 xpt_release_ccb(ccb); 3514 3515 if (error || load == 0) 3516 softc->fileno = softc->blkno = (daddr_t) -1; 3517 else if (error == 0) 3518 softc->fileno = softc->blkno = (daddr_t) 0; 3519 return (error); 3520 } 3521 3522 static int 3523 saerase(struct cam_periph *periph, int longerase) 3524 { 3525 3526 union ccb *ccb; 3527 struct sa_softc *softc; 3528 int error; 3529 3530 softc = (struct sa_softc *)periph->softc; 3531 if (softc->open_rdonly) 3532 return (EBADF); 3533 3534 ccb = cam_periph_getccb(periph, 1); 3535 3536 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3537 SSD_FULL_SIZE, ERASE_TIMEOUT); 3538 3539 softc->dsreg = MTIO_DSREG_ZER; 3540 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3541 softc->dsreg = MTIO_DSREG_REST; 3542 3543 xpt_release_ccb(ccb); 3544 return (error); 3545 } 3546 3547 #endif /* _KERNEL */ 3548 3549 /* 3550 * Read tape block limits command. 3551 */ 3552 void 3553 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3554 void (*cbfcnp)(struct cam_periph *, union ccb *), 3555 u_int8_t tag_action, 3556 struct scsi_read_block_limits_data *rlimit_buf, 3557 u_int8_t sense_len, u_int32_t timeout) 3558 { 3559 struct scsi_read_block_limits *scsi_cmd; 3560 3561 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3562 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3563 sizeof(*scsi_cmd), timeout); 3564 3565 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3566 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3567 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3568 } 3569 3570 void 3571 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3572 void (*cbfcnp)(struct cam_periph *, union ccb *), 3573 u_int8_t tag_action, int readop, int sli, 3574 int fixed, u_int32_t length, u_int8_t *data_ptr, 3575 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3576 { 3577 struct scsi_sa_rw *scsi_cmd; 3578 int read; 3579 3580 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 3581 3582 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3583 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 3584 scsi_cmd->sli_fixed = 0; 3585 if (sli && read) 3586 scsi_cmd->sli_fixed |= SAR_SLI; 3587 if (fixed) 3588 scsi_cmd->sli_fixed |= SARW_FIXED; 3589 scsi_ulto3b(length, scsi_cmd->length); 3590 scsi_cmd->control = 0; 3591 3592 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 3593 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 3594 tag_action, data_ptr, dxfer_len, sense_len, 3595 sizeof(*scsi_cmd), timeout); 3596 } 3597 3598 void 3599 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3600 void (*cbfcnp)(struct cam_periph *, union ccb *), 3601 u_int8_t tag_action, int immediate, int eot, 3602 int reten, int load, u_int8_t sense_len, 3603 u_int32_t timeout) 3604 { 3605 struct scsi_load_unload *scsi_cmd; 3606 3607 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3608 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3609 scsi_cmd->opcode = LOAD_UNLOAD; 3610 if (immediate) 3611 scsi_cmd->immediate = SLU_IMMED; 3612 if (eot) 3613 scsi_cmd->eot_reten_load |= SLU_EOT; 3614 if (reten) 3615 scsi_cmd->eot_reten_load |= SLU_RETEN; 3616 if (load) 3617 scsi_cmd->eot_reten_load |= SLU_LOAD; 3618 3619 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3620 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3621 } 3622 3623 void 3624 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3625 void (*cbfcnp)(struct cam_periph *, union ccb *), 3626 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3627 u_int32_t timeout) 3628 { 3629 struct scsi_rewind *scsi_cmd; 3630 3631 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3632 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3633 scsi_cmd->opcode = REWIND; 3634 if (immediate) 3635 scsi_cmd->immediate = SREW_IMMED; 3636 3637 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3638 0, sense_len, sizeof(*scsi_cmd), timeout); 3639 } 3640 3641 void 3642 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3643 void (*cbfcnp)(struct cam_periph *, union ccb *), 3644 u_int8_t tag_action, scsi_space_code code, 3645 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3646 { 3647 struct scsi_space *scsi_cmd; 3648 3649 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3650 scsi_cmd->opcode = SPACE; 3651 scsi_cmd->code = code; 3652 scsi_ulto3b(count, scsi_cmd->count); 3653 scsi_cmd->control = 0; 3654 3655 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3656 0, sense_len, sizeof(*scsi_cmd), timeout); 3657 } 3658 3659 void 3660 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3661 void (*cbfcnp)(struct cam_periph *, union ccb *), 3662 u_int8_t tag_action, int immediate, int setmark, 3663 u_int32_t num_marks, u_int8_t sense_len, 3664 u_int32_t timeout) 3665 { 3666 struct scsi_write_filemarks *scsi_cmd; 3667 3668 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3669 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3670 scsi_cmd->opcode = WRITE_FILEMARKS; 3671 if (immediate) 3672 scsi_cmd->byte2 |= SWFMRK_IMMED; 3673 if (setmark) 3674 scsi_cmd->byte2 |= SWFMRK_WSMK; 3675 3676 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3677 3678 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3679 0, sense_len, sizeof(*scsi_cmd), timeout); 3680 } 3681 3682 /* 3683 * The reserve and release unit commands differ only by their opcodes. 3684 */ 3685 void 3686 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3687 void (*cbfcnp)(struct cam_periph *, union ccb *), 3688 u_int8_t tag_action, int third_party, 3689 int third_party_id, u_int8_t sense_len, 3690 u_int32_t timeout, int reserve) 3691 { 3692 struct scsi_reserve_release_unit *scsi_cmd; 3693 3694 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3695 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3696 3697 if (reserve) 3698 scsi_cmd->opcode = RESERVE_UNIT; 3699 else 3700 scsi_cmd->opcode = RELEASE_UNIT; 3701 3702 if (third_party) { 3703 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3704 scsi_cmd->lun_thirdparty |= 3705 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3706 } 3707 3708 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3709 0, sense_len, sizeof(*scsi_cmd), timeout); 3710 } 3711 3712 void 3713 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3714 void (*cbfcnp)(struct cam_periph *, union ccb *), 3715 u_int8_t tag_action, int immediate, int long_erase, 3716 u_int8_t sense_len, u_int32_t timeout) 3717 { 3718 struct scsi_erase *scsi_cmd; 3719 3720 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3721 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3722 3723 scsi_cmd->opcode = ERASE; 3724 3725 if (immediate) 3726 scsi_cmd->lun_imm_long |= SE_IMMED; 3727 3728 if (long_erase) 3729 scsi_cmd->lun_imm_long |= SE_LONG; 3730 3731 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3732 0, sense_len, sizeof(*scsi_cmd), timeout); 3733 } 3734 3735 /* 3736 * Read Tape Position command. 3737 */ 3738 void 3739 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3740 void (*cbfcnp)(struct cam_periph *, union ccb *), 3741 u_int8_t tag_action, int hardsoft, 3742 struct scsi_tape_position_data *sbp, 3743 u_int8_t sense_len, u_int32_t timeout) 3744 { 3745 struct scsi_tape_read_position *scmd; 3746 3747 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3748 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3749 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3750 bzero(scmd, sizeof(*scmd)); 3751 scmd->opcode = READ_POSITION; 3752 scmd->byte1 = hardsoft; 3753 } 3754 3755 /* 3756 * Set Tape Position command. 3757 */ 3758 void 3759 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3760 void (*cbfcnp)(struct cam_periph *, union ccb *), 3761 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3762 u_int8_t sense_len, u_int32_t timeout) 3763 { 3764 struct scsi_tape_locate *scmd; 3765 3766 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3767 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3768 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3769 bzero(scmd, sizeof(*scmd)); 3770 scmd->opcode = LOCATE; 3771 if (hardsoft) 3772 scmd->byte1 |= SA_SPOS_BT; 3773 scsi_ulto4b(blkno, scmd->blkaddr); 3774 } 3775