1 /*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1999, 2000 Matthew Jacob 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #ifdef _KERNEL 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #endif 38 #include <sys/types.h> 39 #include <sys/time.h> 40 #include <sys/bio.h> 41 #include <sys/limits.h> 42 #include <sys/malloc.h> 43 #include <sys/mtio.h> 44 #ifdef _KERNEL 45 #include <sys/conf.h> 46 #include <sys/sysctl.h> 47 #include <sys/taskqueue.h> 48 #endif 49 #include <sys/fcntl.h> 50 #include <sys/devicestat.h> 51 52 #ifndef _KERNEL 53 #include <stdio.h> 54 #include <string.h> 55 #endif 56 57 #include <cam/cam.h> 58 #include <cam/cam_ccb.h> 59 #include <cam/cam_periph.h> 60 #include <cam/cam_xpt_periph.h> 61 #include <cam/cam_debug.h> 62 63 #include <cam/scsi/scsi_all.h> 64 #include <cam/scsi/scsi_message.h> 65 #include <cam/scsi/scsi_sa.h> 66 67 #ifdef _KERNEL 68 69 #include <opt_sa.h> 70 71 #ifndef SA_IO_TIMEOUT 72 #define SA_IO_TIMEOUT 4 73 #endif 74 #ifndef SA_SPACE_TIMEOUT 75 #define SA_SPACE_TIMEOUT 1 * 60 76 #endif 77 #ifndef SA_REWIND_TIMEOUT 78 #define SA_REWIND_TIMEOUT 2 * 60 79 #endif 80 #ifndef SA_ERASE_TIMEOUT 81 #define SA_ERASE_TIMEOUT 4 * 60 82 #endif 83 84 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 85 86 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 87 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 88 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 89 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 90 91 /* 92 * Additional options that can be set for config: SA_1FM_AT_EOT 93 */ 94 95 #ifndef UNUSED_PARAMETER 96 #define UNUSED_PARAMETER(x) x = x 97 #endif 98 99 #define QFRLS(ccb) \ 100 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 101 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 102 103 /* 104 * Driver states 105 */ 106 107 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 108 109 typedef enum { 110 SA_STATE_NORMAL, SA_STATE_ABNORMAL 111 } sa_state; 112 113 #define ccb_pflags ppriv_field0 114 #define ccb_bp ppriv_ptr1 115 116 #define SA_CCB_BUFFER_IO 0x0 117 #define SA_CCB_TYPEMASK 0x1 118 #define SA_POSITION_UPDATED 0x2 119 120 #define Set_CCB_Type(x, type) \ 121 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 122 x->ccb_h.ccb_pflags |= type 123 124 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 125 126 127 128 typedef enum { 129 SA_FLAG_OPEN = 0x0001, 130 SA_FLAG_FIXED = 0x0002, 131 SA_FLAG_TAPE_LOCKED = 0x0004, 132 SA_FLAG_TAPE_MOUNTED = 0x0008, 133 SA_FLAG_TAPE_WP = 0x0010, 134 SA_FLAG_TAPE_WRITTEN = 0x0020, 135 SA_FLAG_EOM_PENDING = 0x0040, 136 SA_FLAG_EIO_PENDING = 0x0080, 137 SA_FLAG_EOF_PENDING = 0x0100, 138 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 139 SA_FLAG_EOF_PENDING), 140 SA_FLAG_INVALID = 0x0200, 141 SA_FLAG_COMP_ENABLED = 0x0400, 142 SA_FLAG_COMP_SUPP = 0x0800, 143 SA_FLAG_COMP_UNSUPP = 0x1000, 144 SA_FLAG_TAPE_FROZEN = 0x2000 145 } sa_flags; 146 147 typedef enum { 148 SA_MODE_REWIND = 0x00, 149 SA_MODE_NOREWIND = 0x01, 150 SA_MODE_OFFLINE = 0x02 151 } sa_mode; 152 153 typedef enum { 154 SA_PARAM_NONE = 0x00, 155 SA_PARAM_BLOCKSIZE = 0x01, 156 SA_PARAM_DENSITY = 0x02, 157 SA_PARAM_COMPRESSION = 0x04, 158 SA_PARAM_BUFF_MODE = 0x08, 159 SA_PARAM_NUMBLOCKS = 0x10, 160 SA_PARAM_WP = 0x20, 161 SA_PARAM_SPEED = 0x40, 162 SA_PARAM_ALL = 0x7f 163 } sa_params; 164 165 typedef enum { 166 SA_QUIRK_NONE = 0x00, 167 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 168 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 169 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 170 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 171 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 172 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 173 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 174 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 175 } sa_quirks; 176 177 #define SA_QUIRK_BIT_STRING \ 178 "\020" \ 179 "\001NOCOMP" \ 180 "\002FIXED" \ 181 "\003VARIABLE" \ 182 "\0042FM" \ 183 "\0051FM" \ 184 "\006NODREAD" \ 185 "\007NO_MODESEL" \ 186 "\010NO_CPAGE" 187 188 #define SAMODE(z) (dev2unit(z) & 0x3) 189 #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) 190 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 191 192 #define SA_NOT_CTLDEV 0 193 #define SA_CTLDEV 1 194 195 #define SA_ATYPE_R 0 196 #define SA_ATYPE_NR 1 197 #define SA_ATYPE_ER 2 198 199 #define SAMINOR(ctl, mode, access) \ 200 ((ctl << 4) | (mode << 2) | (access & 0x3)) 201 202 #define SA_NUM_MODES 4 203 struct sa_devs { 204 struct cdev *ctl_dev; 205 struct sa_mode_devs { 206 struct cdev *r_dev; 207 struct cdev *nr_dev; 208 struct cdev *er_dev; 209 } mode_devs[SA_NUM_MODES]; 210 }; 211 212 struct sa_softc { 213 sa_state state; 214 sa_flags flags; 215 sa_quirks quirks; 216 u_int si_flags; 217 struct bio_queue_head bio_queue; 218 int queue_count; 219 struct devstat *device_stats; 220 struct sa_devs devs; 221 int blk_gran; 222 int blk_mask; 223 int blk_shift; 224 u_int32_t max_blk; 225 u_int32_t min_blk; 226 u_int32_t maxio; 227 u_int32_t cpi_maxio; 228 int allow_io_split; 229 u_int32_t comp_algorithm; 230 u_int32_t saved_comp_algorithm; 231 u_int32_t media_blksize; 232 u_int32_t last_media_blksize; 233 u_int32_t media_numblks; 234 u_int8_t media_density; 235 u_int8_t speed; 236 u_int8_t scsi_rev; 237 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 238 int buffer_mode; 239 int filemarks; 240 union ccb saved_ccb; 241 int last_resid_was_io; 242 243 /* 244 * Relative to BOT Location. 245 */ 246 daddr_t fileno; 247 daddr_t blkno; 248 249 /* 250 * Latched Error Info 251 */ 252 struct { 253 struct scsi_sense_data _last_io_sense; 254 u_int64_t _last_io_resid; 255 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 256 struct scsi_sense_data _last_ctl_sense; 257 u_int64_t _last_ctl_resid; 258 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 259 #define last_io_sense errinfo._last_io_sense 260 #define last_io_resid errinfo._last_io_resid 261 #define last_io_cdb errinfo._last_io_cdb 262 #define last_ctl_sense errinfo._last_ctl_sense 263 #define last_ctl_resid errinfo._last_ctl_resid 264 #define last_ctl_cdb errinfo._last_ctl_cdb 265 } errinfo; 266 /* 267 * Misc other flags/state 268 */ 269 u_int32_t 270 : 29, 271 open_rdonly : 1, /* open read-only */ 272 open_pending_mount : 1, /* open pending mount */ 273 ctrl_mode : 1; /* control device open */ 274 275 struct task sysctl_task; 276 struct sysctl_ctx_list sysctl_ctx; 277 struct sysctl_oid *sysctl_tree; 278 }; 279 280 struct sa_quirk_entry { 281 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 282 sa_quirks quirks; /* specific quirk type */ 283 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 284 }; 285 286 static struct sa_quirk_entry sa_quirk_table[] = 287 { 288 { 289 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 290 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 291 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 292 }, 293 { 294 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 295 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 296 }, 297 { 298 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 299 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 300 }, 301 { 302 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 303 "Python*", "*"}, SA_QUIRK_NODREAD, 0 304 }, 305 { 306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 307 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 308 }, 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 311 "VIPER 2525 25462", "-011"}, 312 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 313 }, 314 { 315 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 316 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 317 }, 318 #if 0 319 { 320 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 321 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 322 }, 323 #endif 324 { 325 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 326 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 327 }, 328 { 329 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 330 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 331 }, 332 { 333 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 334 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 335 }, 336 { 337 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 338 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 339 }, 340 { 341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 342 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 343 }, 344 { 345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 346 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 347 }, 348 { /* jreynold@primenet.com */ 349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 350 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 351 }, 352 { /* mike@sentex.net */ 353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 354 "STT20000*", "*"}, SA_QUIRK_1FM, 0 355 }, 356 { 357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 358 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 359 }, 360 { 361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 362 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 363 }, 364 { 365 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 366 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 367 }, 368 { 369 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 370 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 371 }, 372 { 373 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 374 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 375 }, 376 { 377 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 378 " SLR*", "*"}, SA_QUIRK_1FM, 0 379 }, 380 { 381 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 382 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 383 }, 384 { 385 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 386 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 387 } 388 }; 389 390 static d_open_t saopen; 391 static d_close_t saclose; 392 static d_strategy_t sastrategy; 393 static d_ioctl_t saioctl; 394 static periph_init_t sainit; 395 static periph_ctor_t saregister; 396 static periph_oninv_t saoninvalidate; 397 static periph_dtor_t sacleanup; 398 static periph_start_t sastart; 399 static void saasync(void *callback_arg, u_int32_t code, 400 struct cam_path *path, void *arg); 401 static void sadone(struct cam_periph *periph, 402 union ccb *start_ccb); 403 static int saerror(union ccb *ccb, u_int32_t cam_flags, 404 u_int32_t sense_flags); 405 static int samarkswanted(struct cam_periph *); 406 static int sacheckeod(struct cam_periph *periph); 407 static int sagetparams(struct cam_periph *periph, 408 sa_params params_to_get, 409 u_int32_t *blocksize, u_int8_t *density, 410 u_int32_t *numblocks, int *buff_mode, 411 u_int8_t *write_protect, u_int8_t *speed, 412 int *comp_supported, int *comp_enabled, 413 u_int32_t *comp_algorithm, 414 sa_comp_t *comp_page); 415 static int sasetparams(struct cam_periph *periph, 416 sa_params params_to_set, 417 u_int32_t blocksize, u_int8_t density, 418 u_int32_t comp_algorithm, 419 u_int32_t sense_flags); 420 static void saprevent(struct cam_periph *periph, int action); 421 static int sarewind(struct cam_periph *periph); 422 static int saspace(struct cam_periph *periph, int count, 423 scsi_space_code code); 424 static int samount(struct cam_periph *, int, struct cdev *); 425 static int saretension(struct cam_periph *periph); 426 static int sareservereleaseunit(struct cam_periph *periph, 427 int reserve); 428 static int saloadunload(struct cam_periph *periph, int load); 429 static int saerase(struct cam_periph *periph, int longerase); 430 static int sawritefilemarks(struct cam_periph *periph, 431 int nmarks, int setmarks); 432 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 433 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 434 435 436 #ifndef SA_DEFAULT_IO_SPLIT 437 #define SA_DEFAULT_IO_SPLIT 0 438 #endif 439 440 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 441 442 /* 443 * Tunable to allow the user to set a global allow_io_split value. Note 444 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 445 * is bad behavior, because it hides the true tape block size from the 446 * application. 447 */ 448 TUNABLE_INT("kern.cam.sa.allow_io_split", &sa_allow_io_split); 449 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 450 "CAM Sequential Access Tape Driver"); 451 452 static struct periph_driver sadriver = 453 { 454 sainit, "sa", 455 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 456 }; 457 458 PERIPHDRIVER_DECLARE(sa, sadriver); 459 460 /* For 2.2-stable support */ 461 #ifndef D_TAPE 462 #define D_TAPE 0 463 #endif 464 465 466 static struct cdevsw sa_cdevsw = { 467 .d_version = D_VERSION, 468 .d_open = saopen, 469 .d_close = saclose, 470 .d_read = physread, 471 .d_write = physwrite, 472 .d_ioctl = saioctl, 473 .d_strategy = sastrategy, 474 .d_name = "sa", 475 .d_flags = D_TAPE, 476 }; 477 478 static int 479 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 480 { 481 struct cam_periph *periph; 482 struct sa_softc *softc; 483 int error; 484 485 periph = (struct cam_periph *)dev->si_drv1; 486 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 487 return (ENXIO); 488 } 489 490 cam_periph_lock(periph); 491 492 softc = (struct sa_softc *)periph->softc; 493 494 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 495 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 496 497 if (SA_IS_CTRL(dev)) { 498 softc->ctrl_mode = 1; 499 cam_periph_unlock(periph); 500 return (0); 501 } 502 503 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 504 cam_periph_unlock(periph); 505 cam_periph_release(periph); 506 return (error); 507 } 508 509 if (softc->flags & SA_FLAG_OPEN) { 510 error = EBUSY; 511 } else if (softc->flags & SA_FLAG_INVALID) { 512 error = ENXIO; 513 } else { 514 /* 515 * Preserve whether this is a read_only open. 516 */ 517 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 518 519 /* 520 * The function samount ensures media is loaded and ready. 521 * It also does a device RESERVE if the tape isn't yet mounted. 522 * 523 * If the mount fails and this was a non-blocking open, 524 * make this a 'open_pending_mount' action. 525 */ 526 error = samount(periph, flags, dev); 527 if (error && (flags & O_NONBLOCK)) { 528 softc->flags |= SA_FLAG_OPEN; 529 softc->open_pending_mount = 1; 530 cam_periph_unhold(periph); 531 cam_periph_unlock(periph); 532 return (0); 533 } 534 } 535 536 if (error) { 537 cam_periph_unhold(periph); 538 cam_periph_unlock(periph); 539 cam_periph_release(periph); 540 return (error); 541 } 542 543 saprevent(periph, PR_PREVENT); 544 softc->flags |= SA_FLAG_OPEN; 545 546 cam_periph_unhold(periph); 547 cam_periph_unlock(periph); 548 return (error); 549 } 550 551 static int 552 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 553 { 554 struct cam_periph *periph; 555 struct sa_softc *softc; 556 int mode, error, writing, tmp; 557 int closedbits = SA_FLAG_OPEN; 558 559 mode = SAMODE(dev); 560 periph = (struct cam_periph *)dev->si_drv1; 561 if (periph == NULL) 562 return (ENXIO); 563 564 cam_periph_lock(periph); 565 566 softc = (struct sa_softc *)periph->softc; 567 568 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 569 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 570 571 572 softc->open_rdonly = 0; 573 if (SA_IS_CTRL(dev)) { 574 softc->ctrl_mode = 0; 575 cam_periph_unlock(periph); 576 cam_periph_release(periph); 577 return (0); 578 } 579 580 if (softc->open_pending_mount) { 581 softc->flags &= ~SA_FLAG_OPEN; 582 softc->open_pending_mount = 0; 583 cam_periph_unlock(periph); 584 cam_periph_release(periph); 585 return (0); 586 } 587 588 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 589 cam_periph_unlock(periph); 590 return (error); 591 } 592 593 /* 594 * Were we writing the tape? 595 */ 596 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 597 598 /* 599 * See whether or not we need to write filemarks. If this 600 * fails, we probably have to assume we've lost tape 601 * position. 602 */ 603 error = sacheckeod(periph); 604 if (error) { 605 xpt_print(periph->path, 606 "failed to write terminating filemark(s)\n"); 607 softc->flags |= SA_FLAG_TAPE_FROZEN; 608 } 609 610 /* 611 * Whatever we end up doing, allow users to eject tapes from here on. 612 */ 613 saprevent(periph, PR_ALLOW); 614 615 /* 616 * Decide how to end... 617 */ 618 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 619 closedbits |= SA_FLAG_TAPE_FROZEN; 620 } else switch (mode) { 621 case SA_MODE_OFFLINE: 622 /* 623 * An 'offline' close is an unconditional release of 624 * frozen && mount conditions, irrespective of whether 625 * these operations succeeded. The reason for this is 626 * to allow at least some kind of programmatic way 627 * around our state getting all fouled up. If somebody 628 * issues an 'offline' command, that will be allowed 629 * to clear state. 630 */ 631 (void) sarewind(periph); 632 (void) saloadunload(periph, FALSE); 633 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 634 break; 635 case SA_MODE_REWIND: 636 /* 637 * If the rewind fails, return an error- if anyone cares, 638 * but not overwriting any previous error. 639 * 640 * We don't clear the notion of mounted here, but we do 641 * clear the notion of frozen if we successfully rewound. 642 */ 643 tmp = sarewind(periph); 644 if (tmp) { 645 if (error != 0) 646 error = tmp; 647 } else { 648 closedbits |= SA_FLAG_TAPE_FROZEN; 649 } 650 break; 651 case SA_MODE_NOREWIND: 652 /* 653 * If we're not rewinding/unloading the tape, find out 654 * whether we need to back up over one of two filemarks 655 * we wrote (if we wrote two filemarks) so that appends 656 * from this point on will be sane. 657 */ 658 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 659 tmp = saspace(periph, -1, SS_FILEMARKS); 660 if (tmp) { 661 xpt_print(periph->path, "unable to backspace " 662 "over one of double filemarks at end of " 663 "tape\n"); 664 xpt_print(periph->path, "it is possible that " 665 "this device needs a SA_QUIRK_1FM quirk set" 666 "for it\n"); 667 softc->flags |= SA_FLAG_TAPE_FROZEN; 668 } 669 } 670 break; 671 default: 672 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 673 /* NOTREACHED */ 674 break; 675 } 676 677 /* 678 * We wish to note here that there are no more filemarks to be written. 679 */ 680 softc->filemarks = 0; 681 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 682 683 /* 684 * And we are no longer open for business. 685 */ 686 softc->flags &= ~closedbits; 687 688 /* 689 * Inform users if tape state if frozen.... 690 */ 691 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 692 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 693 "REWIND or MTEOM command to clear this state.\n"); 694 } 695 696 /* release the device if it is no longer mounted */ 697 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 698 sareservereleaseunit(periph, FALSE); 699 700 cam_periph_unhold(periph); 701 cam_periph_unlock(periph); 702 cam_periph_release(periph); 703 704 return (error); 705 } 706 707 /* 708 * Actually translate the requested transfer into one the physical driver 709 * can understand. The transfer is described by a buf and will include 710 * only one physical transfer. 711 */ 712 static void 713 sastrategy(struct bio *bp) 714 { 715 struct cam_periph *periph; 716 struct sa_softc *softc; 717 718 bp->bio_resid = bp->bio_bcount; 719 if (SA_IS_CTRL(bp->bio_dev)) { 720 biofinish(bp, NULL, EINVAL); 721 return; 722 } 723 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 724 if (periph == NULL) { 725 biofinish(bp, NULL, ENXIO); 726 return; 727 } 728 cam_periph_lock(periph); 729 730 softc = (struct sa_softc *)periph->softc; 731 732 if (softc->flags & SA_FLAG_INVALID) { 733 cam_periph_unlock(periph); 734 biofinish(bp, NULL, ENXIO); 735 return; 736 } 737 738 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 739 cam_periph_unlock(periph); 740 biofinish(bp, NULL, EPERM); 741 return; 742 } 743 744 /* 745 * This should actually never occur as the write(2) 746 * system call traps attempts to write to a read-only 747 * file descriptor. 748 */ 749 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 750 cam_periph_unlock(periph); 751 biofinish(bp, NULL, EBADF); 752 return; 753 } 754 755 if (softc->open_pending_mount) { 756 int error = samount(periph, 0, bp->bio_dev); 757 if (error) { 758 cam_periph_unlock(periph); 759 biofinish(bp, NULL, ENXIO); 760 return; 761 } 762 saprevent(periph, PR_PREVENT); 763 softc->open_pending_mount = 0; 764 } 765 766 767 /* 768 * If it's a null transfer, return immediately 769 */ 770 if (bp->bio_bcount == 0) { 771 cam_periph_unlock(periph); 772 biodone(bp); 773 return; 774 } 775 776 /* valid request? */ 777 if (softc->flags & SA_FLAG_FIXED) { 778 /* 779 * Fixed block device. The byte count must 780 * be a multiple of our block size. 781 */ 782 if (((softc->blk_mask != ~0) && 783 ((bp->bio_bcount & softc->blk_mask) != 0)) || 784 ((softc->blk_mask == ~0) && 785 ((bp->bio_bcount % softc->min_blk) != 0))) { 786 xpt_print(periph->path, "Invalid request. Fixed block " 787 "device requests must be a multiple of %d bytes\n", 788 softc->min_blk); 789 cam_periph_unlock(periph); 790 biofinish(bp, NULL, EINVAL); 791 return; 792 } 793 } else if ((bp->bio_bcount > softc->max_blk) || 794 (bp->bio_bcount < softc->min_blk) || 795 (bp->bio_bcount & softc->blk_mask) != 0) { 796 797 xpt_print_path(periph->path); 798 printf("Invalid request. Variable block " 799 "device requests must be "); 800 if (softc->blk_mask != 0) { 801 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 802 } 803 printf("between %d and %d bytes\n", softc->min_blk, 804 softc->max_blk); 805 cam_periph_unlock(periph); 806 biofinish(bp, NULL, EINVAL); 807 return; 808 } 809 810 /* 811 * Place it at the end of the queue. 812 */ 813 bioq_insert_tail(&softc->bio_queue, bp); 814 softc->queue_count++; 815 #if 0 816 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 817 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 818 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 819 (bp->bio_cmd == BIO_READ)? "read" : "write")); 820 #endif 821 if (softc->queue_count > 1) { 822 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 823 ("sastrategy: queue count now %d\n", softc->queue_count)); 824 } 825 826 /* 827 * Schedule ourselves for performing the work. 828 */ 829 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 830 cam_periph_unlock(periph); 831 832 return; 833 } 834 835 836 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 837 if (softc->open_pending_mount) { \ 838 error = samount(periph, 0, dev); \ 839 if (error) { \ 840 break; \ 841 } \ 842 saprevent(periph, PR_PREVENT); \ 843 softc->open_pending_mount = 0; \ 844 } 845 846 static int 847 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 848 { 849 struct cam_periph *periph; 850 struct sa_softc *softc; 851 scsi_space_code spaceop; 852 int didlockperiph = 0; 853 int mode; 854 int error = 0; 855 856 mode = SAMODE(dev); 857 error = 0; /* shut up gcc */ 858 spaceop = 0; /* shut up gcc */ 859 860 periph = (struct cam_periph *)dev->si_drv1; 861 if (periph == NULL) 862 return (ENXIO); 863 864 cam_periph_lock(periph); 865 softc = (struct sa_softc *)periph->softc; 866 867 /* 868 * Check for control mode accesses. We allow MTIOCGET and 869 * MTIOCERRSTAT (but need to be the only one open in order 870 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 871 * and MTCOMP (but need to be the only one accessing this 872 * device to run those). 873 */ 874 875 if (SA_IS_CTRL(dev)) { 876 switch (cmd) { 877 case MTIOCGETEOTMODEL: 878 case MTIOCGET: 879 break; 880 case MTIOCERRSTAT: 881 /* 882 * If the periph isn't already locked, lock it 883 * so our MTIOCERRSTAT can reset latched error stats. 884 * 885 * If the periph is already locked, skip it because 886 * we're just getting status and it'll be up to the 887 * other thread that has this device open to do 888 * an MTIOCERRSTAT that would clear latched status. 889 */ 890 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 891 error = cam_periph_hold(periph, PRIBIO|PCATCH); 892 if (error != 0) { 893 cam_periph_unlock(periph); 894 return (error); 895 } 896 didlockperiph = 1; 897 } 898 break; 899 900 case MTIOCTOP: 901 { 902 struct mtop *mt = (struct mtop *) arg; 903 904 /* 905 * Check to make sure it's an OP we can perform 906 * with no media inserted. 907 */ 908 switch (mt->mt_op) { 909 case MTSETBSIZ: 910 case MTSETDNSTY: 911 case MTCOMP: 912 mt = NULL; 913 /* FALLTHROUGH */ 914 default: 915 break; 916 } 917 if (mt != NULL) { 918 break; 919 } 920 /* FALLTHROUGH */ 921 } 922 case MTIOCSETEOTMODEL: 923 /* 924 * We need to acquire the peripheral here rather 925 * than at open time because we are sharing writable 926 * access to data structures. 927 */ 928 error = cam_periph_hold(periph, PRIBIO|PCATCH); 929 if (error != 0) { 930 cam_periph_unlock(periph); 931 return (error); 932 } 933 didlockperiph = 1; 934 break; 935 936 default: 937 cam_periph_unlock(periph); 938 return (EINVAL); 939 } 940 } 941 942 /* 943 * Find the device that the user is talking about 944 */ 945 switch (cmd) { 946 case MTIOCGET: 947 { 948 struct mtget *g = (struct mtget *)arg; 949 950 /* 951 * If this isn't the control mode device, actually go out 952 * and ask the drive again what it's set to. 953 */ 954 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 955 u_int8_t write_protect; 956 int comp_enabled, comp_supported; 957 error = sagetparams(periph, SA_PARAM_ALL, 958 &softc->media_blksize, &softc->media_density, 959 &softc->media_numblks, &softc->buffer_mode, 960 &write_protect, &softc->speed, &comp_supported, 961 &comp_enabled, &softc->comp_algorithm, NULL); 962 if (error) 963 break; 964 if (write_protect) 965 softc->flags |= SA_FLAG_TAPE_WP; 966 else 967 softc->flags &= ~SA_FLAG_TAPE_WP; 968 softc->flags &= ~(SA_FLAG_COMP_SUPP| 969 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 970 if (comp_supported) { 971 if (softc->saved_comp_algorithm == 0) 972 softc->saved_comp_algorithm = 973 softc->comp_algorithm; 974 softc->flags |= SA_FLAG_COMP_SUPP; 975 if (comp_enabled) 976 softc->flags |= SA_FLAG_COMP_ENABLED; 977 } else 978 softc->flags |= SA_FLAG_COMP_UNSUPP; 979 } 980 bzero(g, sizeof(struct mtget)); 981 g->mt_type = MT_ISAR; 982 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 983 g->mt_comp = MT_COMP_UNSUPP; 984 g->mt_comp0 = MT_COMP_UNSUPP; 985 g->mt_comp1 = MT_COMP_UNSUPP; 986 g->mt_comp2 = MT_COMP_UNSUPP; 987 g->mt_comp3 = MT_COMP_UNSUPP; 988 } else { 989 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 990 g->mt_comp = MT_COMP_DISABLED; 991 } else { 992 g->mt_comp = softc->comp_algorithm; 993 } 994 g->mt_comp0 = softc->comp_algorithm; 995 g->mt_comp1 = softc->comp_algorithm; 996 g->mt_comp2 = softc->comp_algorithm; 997 g->mt_comp3 = softc->comp_algorithm; 998 } 999 g->mt_density = softc->media_density; 1000 g->mt_density0 = softc->media_density; 1001 g->mt_density1 = softc->media_density; 1002 g->mt_density2 = softc->media_density; 1003 g->mt_density3 = softc->media_density; 1004 g->mt_blksiz = softc->media_blksize; 1005 g->mt_blksiz0 = softc->media_blksize; 1006 g->mt_blksiz1 = softc->media_blksize; 1007 g->mt_blksiz2 = softc->media_blksize; 1008 g->mt_blksiz3 = softc->media_blksize; 1009 g->mt_fileno = softc->fileno; 1010 g->mt_blkno = softc->blkno; 1011 g->mt_dsreg = (short) softc->dsreg; 1012 /* 1013 * Yes, we know that this is likely to overflow 1014 */ 1015 if (softc->last_resid_was_io) { 1016 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1017 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1018 softc->last_io_resid = 0; 1019 } 1020 } 1021 } else { 1022 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1023 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1024 softc->last_ctl_resid = 0; 1025 } 1026 } 1027 } 1028 error = 0; 1029 break; 1030 } 1031 case MTIOCERRSTAT: 1032 { 1033 struct scsi_tape_errors *sep = 1034 &((union mterrstat *)arg)->scsi_errstat; 1035 1036 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1037 ("saioctl: MTIOCERRSTAT\n")); 1038 1039 bzero(sep, sizeof(*sep)); 1040 sep->io_resid = softc->last_io_resid; 1041 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1042 sizeof (sep->io_sense)); 1043 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1044 sizeof (sep->io_cdb)); 1045 sep->ctl_resid = softc->last_ctl_resid; 1046 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1047 sizeof (sep->ctl_sense)); 1048 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1049 sizeof (sep->ctl_cdb)); 1050 1051 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1052 didlockperiph) 1053 bzero((caddr_t) &softc->errinfo, 1054 sizeof (softc->errinfo)); 1055 error = 0; 1056 break; 1057 } 1058 case MTIOCTOP: 1059 { 1060 struct mtop *mt; 1061 int count; 1062 1063 PENDING_MOUNT_CHECK(softc, periph, dev); 1064 1065 mt = (struct mtop *)arg; 1066 1067 1068 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1069 ("saioctl: op=0x%x count=0x%x\n", 1070 mt->mt_op, mt->mt_count)); 1071 1072 count = mt->mt_count; 1073 switch (mt->mt_op) { 1074 case MTWEOF: /* write an end-of-file marker */ 1075 /* 1076 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1077 * flag because by keeping track of filemarks 1078 * we have last written we know ehether or not 1079 * we need to write more when we close the device. 1080 */ 1081 error = sawritefilemarks(periph, count, FALSE); 1082 break; 1083 case MTWSS: /* write a setmark */ 1084 error = sawritefilemarks(periph, count, TRUE); 1085 break; 1086 case MTBSR: /* backward space record */ 1087 case MTFSR: /* forward space record */ 1088 case MTBSF: /* backward space file */ 1089 case MTFSF: /* forward space file */ 1090 case MTBSS: /* backward space setmark */ 1091 case MTFSS: /* forward space setmark */ 1092 case MTEOD: /* space to end of recorded medium */ 1093 { 1094 int nmarks; 1095 1096 spaceop = SS_FILEMARKS; 1097 nmarks = softc->filemarks; 1098 error = sacheckeod(periph); 1099 if (error) { 1100 xpt_print(periph->path, 1101 "EOD check prior to spacing failed\n"); 1102 softc->flags |= SA_FLAG_EIO_PENDING; 1103 break; 1104 } 1105 nmarks -= softc->filemarks; 1106 switch(mt->mt_op) { 1107 case MTBSR: 1108 count = -count; 1109 /* FALLTHROUGH */ 1110 case MTFSR: 1111 spaceop = SS_BLOCKS; 1112 break; 1113 case MTBSF: 1114 count = -count; 1115 /* FALLTHROUGH */ 1116 case MTFSF: 1117 break; 1118 case MTBSS: 1119 count = -count; 1120 /* FALLTHROUGH */ 1121 case MTFSS: 1122 spaceop = SS_SETMARKS; 1123 break; 1124 case MTEOD: 1125 spaceop = SS_EOD; 1126 count = 0; 1127 nmarks = 0; 1128 break; 1129 default: 1130 error = EINVAL; 1131 break; 1132 } 1133 if (error) 1134 break; 1135 1136 nmarks = softc->filemarks; 1137 /* 1138 * XXX: Why are we checking again? 1139 */ 1140 error = sacheckeod(periph); 1141 if (error) 1142 break; 1143 nmarks -= softc->filemarks; 1144 error = saspace(periph, count - nmarks, spaceop); 1145 /* 1146 * At this point, clear that we've written the tape 1147 * and that we've written any filemarks. We really 1148 * don't know what the applications wishes to do next- 1149 * the sacheckeod's will make sure we terminated the 1150 * tape correctly if we'd been writing, but the next 1151 * action the user application takes will set again 1152 * whether we need to write filemarks. 1153 */ 1154 softc->flags &= 1155 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1156 softc->filemarks = 0; 1157 break; 1158 } 1159 case MTREW: /* rewind */ 1160 PENDING_MOUNT_CHECK(softc, periph, dev); 1161 (void) sacheckeod(periph); 1162 error = sarewind(periph); 1163 /* see above */ 1164 softc->flags &= 1165 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1166 softc->flags &= ~SA_FLAG_ERR_PENDING; 1167 softc->filemarks = 0; 1168 break; 1169 case MTERASE: /* erase */ 1170 PENDING_MOUNT_CHECK(softc, periph, dev); 1171 error = saerase(periph, count); 1172 softc->flags &= 1173 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1174 softc->flags &= ~SA_FLAG_ERR_PENDING; 1175 break; 1176 case MTRETENS: /* re-tension tape */ 1177 PENDING_MOUNT_CHECK(softc, periph, dev); 1178 error = saretension(periph); 1179 softc->flags &= 1180 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1181 softc->flags &= ~SA_FLAG_ERR_PENDING; 1182 break; 1183 case MTOFFL: /* rewind and put the drive offline */ 1184 1185 PENDING_MOUNT_CHECK(softc, periph, dev); 1186 1187 (void) sacheckeod(periph); 1188 /* see above */ 1189 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1190 softc->filemarks = 0; 1191 1192 error = sarewind(periph); 1193 /* clear the frozen flag anyway */ 1194 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1195 1196 /* 1197 * Be sure to allow media removal before ejecting. 1198 */ 1199 1200 saprevent(periph, PR_ALLOW); 1201 if (error == 0) { 1202 error = saloadunload(periph, FALSE); 1203 if (error == 0) { 1204 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1205 } 1206 } 1207 break; 1208 1209 case MTNOP: /* no operation, sets status only */ 1210 case MTCACHE: /* enable controller cache */ 1211 case MTNOCACHE: /* disable controller cache */ 1212 error = 0; 1213 break; 1214 1215 case MTSETBSIZ: /* Set block size for device */ 1216 1217 PENDING_MOUNT_CHECK(softc, periph, dev); 1218 1219 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1220 0, 0, 0); 1221 if (error == 0) { 1222 softc->last_media_blksize = 1223 softc->media_blksize; 1224 softc->media_blksize = count; 1225 if (count) { 1226 softc->flags |= SA_FLAG_FIXED; 1227 if (powerof2(count)) { 1228 softc->blk_shift = 1229 ffs(count) - 1; 1230 softc->blk_mask = count - 1; 1231 } else { 1232 softc->blk_mask = ~0; 1233 softc->blk_shift = 0; 1234 } 1235 /* 1236 * Make the user's desire 'persistent'. 1237 */ 1238 softc->quirks &= ~SA_QUIRK_VARIABLE; 1239 softc->quirks |= SA_QUIRK_FIXED; 1240 } else { 1241 softc->flags &= ~SA_FLAG_FIXED; 1242 if (softc->max_blk == 0) { 1243 softc->max_blk = ~0; 1244 } 1245 softc->blk_shift = 0; 1246 if (softc->blk_gran != 0) { 1247 softc->blk_mask = 1248 softc->blk_gran - 1; 1249 } else { 1250 softc->blk_mask = 0; 1251 } 1252 /* 1253 * Make the user's desire 'persistent'. 1254 */ 1255 softc->quirks |= SA_QUIRK_VARIABLE; 1256 softc->quirks &= ~SA_QUIRK_FIXED; 1257 } 1258 } 1259 break; 1260 case MTSETDNSTY: /* Set density for device and mode */ 1261 PENDING_MOUNT_CHECK(softc, periph, dev); 1262 1263 if (count > UCHAR_MAX) { 1264 error = EINVAL; 1265 break; 1266 } else { 1267 error = sasetparams(periph, SA_PARAM_DENSITY, 1268 0, count, 0, 0); 1269 } 1270 break; 1271 case MTCOMP: /* enable compression */ 1272 PENDING_MOUNT_CHECK(softc, periph, dev); 1273 /* 1274 * Some devices don't support compression, and 1275 * don't like it if you ask them for the 1276 * compression page. 1277 */ 1278 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1279 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1280 error = ENODEV; 1281 break; 1282 } 1283 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1284 0, 0, count, SF_NO_PRINT); 1285 break; 1286 default: 1287 error = EINVAL; 1288 } 1289 break; 1290 } 1291 case MTIOCIEOT: 1292 case MTIOCEEOT: 1293 error = 0; 1294 break; 1295 case MTIOCRDSPOS: 1296 PENDING_MOUNT_CHECK(softc, periph, dev); 1297 error = sardpos(periph, 0, (u_int32_t *) arg); 1298 break; 1299 case MTIOCRDHPOS: 1300 PENDING_MOUNT_CHECK(softc, periph, dev); 1301 error = sardpos(periph, 1, (u_int32_t *) arg); 1302 break; 1303 case MTIOCSLOCATE: 1304 PENDING_MOUNT_CHECK(softc, periph, dev); 1305 error = sasetpos(periph, 0, (u_int32_t *) arg); 1306 break; 1307 case MTIOCHLOCATE: 1308 PENDING_MOUNT_CHECK(softc, periph, dev); 1309 error = sasetpos(periph, 1, (u_int32_t *) arg); 1310 break; 1311 case MTIOCGETEOTMODEL: 1312 error = 0; 1313 if (softc->quirks & SA_QUIRK_1FM) 1314 mode = 1; 1315 else 1316 mode = 2; 1317 *((u_int32_t *) arg) = mode; 1318 break; 1319 case MTIOCSETEOTMODEL: 1320 error = 0; 1321 switch (*((u_int32_t *) arg)) { 1322 case 1: 1323 softc->quirks &= ~SA_QUIRK_2FM; 1324 softc->quirks |= SA_QUIRK_1FM; 1325 break; 1326 case 2: 1327 softc->quirks &= ~SA_QUIRK_1FM; 1328 softc->quirks |= SA_QUIRK_2FM; 1329 break; 1330 default: 1331 error = EINVAL; 1332 break; 1333 } 1334 break; 1335 default: 1336 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1337 break; 1338 } 1339 1340 /* 1341 * Check to see if we cleared a frozen state 1342 */ 1343 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1344 switch(cmd) { 1345 case MTIOCRDSPOS: 1346 case MTIOCRDHPOS: 1347 case MTIOCSLOCATE: 1348 case MTIOCHLOCATE: 1349 softc->fileno = (daddr_t) -1; 1350 softc->blkno = (daddr_t) -1; 1351 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1352 xpt_print(periph->path, 1353 "tape state now unfrozen.\n"); 1354 break; 1355 default: 1356 break; 1357 } 1358 } 1359 if (didlockperiph) { 1360 cam_periph_unhold(periph); 1361 } 1362 cam_periph_unlock(periph); 1363 return (error); 1364 } 1365 1366 static void 1367 sainit(void) 1368 { 1369 cam_status status; 1370 1371 /* 1372 * Install a global async callback. 1373 */ 1374 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1375 1376 if (status != CAM_REQ_CMP) { 1377 printf("sa: Failed to attach master async callback " 1378 "due to status 0x%x!\n", status); 1379 } 1380 } 1381 1382 static void 1383 saoninvalidate(struct cam_periph *periph) 1384 { 1385 struct sa_softc *softc; 1386 1387 softc = (struct sa_softc *)periph->softc; 1388 1389 /* 1390 * De-register any async callbacks. 1391 */ 1392 xpt_register_async(0, saasync, periph, periph->path); 1393 1394 softc->flags |= SA_FLAG_INVALID; 1395 1396 /* 1397 * Return all queued I/O with ENXIO. 1398 * XXX Handle any transactions queued to the card 1399 * with XPT_ABORT_CCB. 1400 */ 1401 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1402 softc->queue_count = 0; 1403 } 1404 1405 static void 1406 sacleanup(struct cam_periph *periph) 1407 { 1408 struct sa_softc *softc; 1409 int i; 1410 1411 softc = (struct sa_softc *)periph->softc; 1412 1413 devstat_remove_entry(softc->device_stats); 1414 cam_periph_unlock(periph); 1415 destroy_dev(softc->devs.ctl_dev); 1416 for (i = 0; i < SA_NUM_MODES; i++) { 1417 destroy_dev(softc->devs.mode_devs[i].r_dev); 1418 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1419 destroy_dev(softc->devs.mode_devs[i].er_dev); 1420 } 1421 cam_periph_lock(periph); 1422 free(softc, M_SCSISA); 1423 } 1424 1425 static void 1426 saasync(void *callback_arg, u_int32_t code, 1427 struct cam_path *path, void *arg) 1428 { 1429 struct cam_periph *periph; 1430 1431 periph = (struct cam_periph *)callback_arg; 1432 switch (code) { 1433 case AC_FOUND_DEVICE: 1434 { 1435 struct ccb_getdev *cgd; 1436 cam_status status; 1437 1438 cgd = (struct ccb_getdev *)arg; 1439 if (cgd == NULL) 1440 break; 1441 1442 if (cgd->protocol != PROTO_SCSI) 1443 break; 1444 1445 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1446 break; 1447 1448 /* 1449 * Allocate a peripheral instance for 1450 * this device and start the probe 1451 * process. 1452 */ 1453 status = cam_periph_alloc(saregister, saoninvalidate, 1454 sacleanup, sastart, 1455 "sa", CAM_PERIPH_BIO, path, 1456 saasync, AC_FOUND_DEVICE, cgd); 1457 1458 if (status != CAM_REQ_CMP 1459 && status != CAM_REQ_INPROG) 1460 printf("saasync: Unable to probe new device " 1461 "due to status 0x%x\n", status); 1462 break; 1463 } 1464 default: 1465 cam_periph_async(periph, code, path, arg); 1466 break; 1467 } 1468 } 1469 1470 static void 1471 sasysctlinit(void *context, int pending) 1472 { 1473 struct cam_periph *periph; 1474 struct sa_softc *softc; 1475 char tmpstr[80], tmpstr2[80]; 1476 1477 periph = (struct cam_periph *)context; 1478 /* 1479 * If the periph is invalid, no need to setup the sysctls. 1480 */ 1481 if (periph->flags & CAM_PERIPH_INVALID) 1482 goto bailout; 1483 1484 softc = (struct sa_softc *)periph->softc; 1485 1486 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 1487 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 1488 1489 sysctl_ctx_init(&softc->sysctl_ctx); 1490 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 1491 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 1492 CTLFLAG_RD, 0, tmpstr); 1493 if (softc->sysctl_tree == NULL) 1494 goto bailout; 1495 1496 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1497 OID_AUTO, "allow_io_split", CTLTYPE_INT | CTLFLAG_RDTUN, 1498 &softc->allow_io_split, 0, "Allow Splitting I/O"); 1499 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1500 OID_AUTO, "maxio", CTLTYPE_INT | CTLFLAG_RD, 1501 &softc->maxio, 0, "Maximum I/O size"); 1502 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1503 OID_AUTO, "cpi_maxio", CTLTYPE_INT | CTLFLAG_RD, 1504 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 1505 1506 bailout: 1507 /* 1508 * Release the reference that was held when this task was enqueued. 1509 */ 1510 cam_periph_release(periph); 1511 } 1512 1513 static cam_status 1514 saregister(struct cam_periph *periph, void *arg) 1515 { 1516 struct sa_softc *softc; 1517 struct ccb_getdev *cgd; 1518 struct ccb_pathinq cpi; 1519 caddr_t match; 1520 char tmpstr[80]; 1521 int i; 1522 1523 cgd = (struct ccb_getdev *)arg; 1524 if (cgd == NULL) { 1525 printf("saregister: no getdev CCB, can't register device\n"); 1526 return (CAM_REQ_CMP_ERR); 1527 } 1528 1529 softc = (struct sa_softc *) 1530 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1531 if (softc == NULL) { 1532 printf("saregister: Unable to probe new device. " 1533 "Unable to allocate softc\n"); 1534 return (CAM_REQ_CMP_ERR); 1535 } 1536 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1537 softc->state = SA_STATE_NORMAL; 1538 softc->fileno = (daddr_t) -1; 1539 softc->blkno = (daddr_t) -1; 1540 1541 bioq_init(&softc->bio_queue); 1542 periph->softc = softc; 1543 1544 /* 1545 * See if this device has any quirks. 1546 */ 1547 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1548 (caddr_t)sa_quirk_table, 1549 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1550 sizeof(*sa_quirk_table), scsi_inquiry_match); 1551 1552 if (match != NULL) { 1553 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1554 softc->last_media_blksize = 1555 ((struct sa_quirk_entry *)match)->prefblk; 1556 } else 1557 softc->quirks = SA_QUIRK_NONE; 1558 1559 bzero(&cpi, sizeof(cpi)); 1560 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1561 cpi.ccb_h.func_code = XPT_PATH_INQ; 1562 xpt_action((union ccb *)&cpi); 1563 1564 /* 1565 * The SA driver supports a blocksize, but we don't know the 1566 * blocksize until we media is inserted. So, set a flag to 1567 * indicate that the blocksize is unavailable right now. 1568 */ 1569 cam_periph_unlock(periph); 1570 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1571 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1572 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1573 1574 /* 1575 * Load the default value that is either compiled in, or loaded 1576 * in the global kern.cam.sa.allow_io_split tunable. 1577 */ 1578 softc->allow_io_split = sa_allow_io_split; 1579 1580 /* 1581 * Load a per-instance tunable, if it exists. NOTE that this 1582 * tunable WILL GO AWAY in FreeBSD 11.0. 1583 */ 1584 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 1585 periph->unit_number); 1586 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 1587 1588 /* 1589 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 1590 * the smaller of cpi.maxio or MAXPHYS. 1591 */ 1592 if (cpi.maxio == 0) 1593 softc->maxio = DFLTPHYS; 1594 else if (cpi.maxio > MAXPHYS) 1595 softc->maxio = MAXPHYS; 1596 else 1597 softc->maxio = cpi.maxio; 1598 1599 /* 1600 * Record the controller's maximum I/O size so we can report it to 1601 * the user later. 1602 */ 1603 softc->cpi_maxio = cpi.maxio; 1604 1605 /* 1606 * By default we tell physio that we do not want our I/O split. 1607 * The user needs to have a 1:1 mapping between the size of his 1608 * write to a tape character device and the size of the write 1609 * that actually goes down to the drive. 1610 */ 1611 if (softc->allow_io_split == 0) 1612 softc->si_flags = SI_NOSPLIT; 1613 else 1614 softc->si_flags = 0; 1615 1616 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 1617 1618 /* 1619 * If the SIM supports unmapped I/O, let physio know that we can 1620 * handle unmapped buffers. 1621 */ 1622 if (cpi.hba_misc & PIM_UNMAPPED) 1623 softc->si_flags |= SI_UNMAPPED; 1624 1625 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1626 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1627 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1628 softc->devs.ctl_dev->si_drv1 = periph; 1629 softc->devs.ctl_dev->si_iosize_max = softc->maxio; 1630 softc->devs.ctl_dev->si_flags |= softc->si_flags; 1631 1632 for (i = 0; i < SA_NUM_MODES; i++) { 1633 1634 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1635 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1636 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1637 periph->periph_name, periph->unit_number, i); 1638 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1639 softc->devs.mode_devs[i].r_dev->si_iosize_max = softc->maxio; 1640 softc->devs.mode_devs[i].r_dev->si_flags |= softc->si_flags; 1641 1642 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1643 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1644 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1645 periph->periph_name, periph->unit_number, i); 1646 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1647 softc->devs.mode_devs[i].nr_dev->si_iosize_max = softc->maxio; 1648 softc->devs.mode_devs[i].nr_dev->si_flags |= softc->si_flags; 1649 1650 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1651 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1652 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1653 periph->periph_name, periph->unit_number, i); 1654 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1655 softc->devs.mode_devs[i].er_dev->si_iosize_max = softc->maxio; 1656 softc->devs.mode_devs[i].er_dev->si_flags |= softc->si_flags; 1657 1658 /* 1659 * Make the (well known) aliases for the first mode. 1660 */ 1661 if (i == 0) { 1662 struct cdev *alias; 1663 1664 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1665 "%s%d", periph->periph_name, periph->unit_number); 1666 alias->si_drv1 = periph; 1667 alias->si_iosize_max = softc->maxio; 1668 alias->si_flags |= softc->si_flags; 1669 1670 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1671 "n%s%d", periph->periph_name, periph->unit_number); 1672 alias->si_drv1 = periph; 1673 alias->si_iosize_max = softc->maxio; 1674 alias->si_flags |= softc->si_flags; 1675 1676 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1677 "e%s%d", periph->periph_name, periph->unit_number); 1678 alias->si_drv1 = periph; 1679 alias->si_iosize_max = softc->maxio; 1680 alias->si_flags |= softc->si_flags; 1681 } 1682 } 1683 cam_periph_lock(periph); 1684 1685 /* 1686 * Bump the peripheral refcount for the sysctl thread, in case we 1687 * get invalidated before the thread has a chance to run. 1688 */ 1689 cam_periph_acquire(periph); 1690 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 1691 1692 /* 1693 * Add an async callback so that we get 1694 * notified if this device goes away. 1695 */ 1696 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1697 1698 xpt_announce_periph(periph, NULL); 1699 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 1700 1701 return (CAM_REQ_CMP); 1702 } 1703 1704 static void 1705 sastart(struct cam_periph *periph, union ccb *start_ccb) 1706 { 1707 struct sa_softc *softc; 1708 1709 softc = (struct sa_softc *)periph->softc; 1710 1711 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1712 1713 1714 switch (softc->state) { 1715 case SA_STATE_NORMAL: 1716 { 1717 /* Pull a buffer from the queue and get going on it */ 1718 struct bio *bp; 1719 1720 /* 1721 * See if there is a buf with work for us to do.. 1722 */ 1723 bp = bioq_first(&softc->bio_queue); 1724 if (bp == NULL) { 1725 xpt_release_ccb(start_ccb); 1726 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1727 struct bio *done_bp; 1728 again: 1729 softc->queue_count--; 1730 bioq_remove(&softc->bio_queue, bp); 1731 bp->bio_resid = bp->bio_bcount; 1732 done_bp = bp; 1733 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1734 /* 1735 * We now just clear errors in this case 1736 * and let the residual be the notifier. 1737 */ 1738 bp->bio_error = 0; 1739 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1740 /* 1741 * This can only happen if we're reading 1742 * in fixed length mode. In this case, 1743 * we dump the rest of the list the 1744 * same way. 1745 */ 1746 bp->bio_error = 0; 1747 if (bioq_first(&softc->bio_queue) != NULL) { 1748 biodone(done_bp); 1749 goto again; 1750 } 1751 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1752 bp->bio_error = EIO; 1753 bp->bio_flags |= BIO_ERROR; 1754 } 1755 bp = bioq_first(&softc->bio_queue); 1756 /* 1757 * Only if we have no other buffers queued up 1758 * do we clear the pending error flag. 1759 */ 1760 if (bp == NULL) 1761 softc->flags &= ~SA_FLAG_ERR_PENDING; 1762 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1763 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1764 "%d more buffers queued up\n", 1765 (softc->flags & SA_FLAG_ERR_PENDING), 1766 (bp != NULL)? "not " : " ", softc->queue_count)); 1767 xpt_release_ccb(start_ccb); 1768 biodone(done_bp); 1769 } else { 1770 u_int32_t length; 1771 1772 bioq_remove(&softc->bio_queue, bp); 1773 softc->queue_count--; 1774 1775 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1776 if (softc->blk_shift != 0) { 1777 length = 1778 bp->bio_bcount >> softc->blk_shift; 1779 } else if (softc->media_blksize != 0) { 1780 length = bp->bio_bcount / 1781 softc->media_blksize; 1782 } else { 1783 bp->bio_error = EIO; 1784 xpt_print(periph->path, "zero blocksize" 1785 " for FIXED length writes?\n"); 1786 biodone(bp); 1787 break; 1788 } 1789 #if 0 1790 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1791 ("issuing a %d fixed record %s\n", 1792 length, (bp->bio_cmd == BIO_READ)? "read" : 1793 "write")); 1794 #endif 1795 } else { 1796 length = bp->bio_bcount; 1797 #if 0 1798 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1799 ("issuing a %d variable byte %s\n", 1800 length, (bp->bio_cmd == BIO_READ)? "read" : 1801 "write")); 1802 #endif 1803 } 1804 devstat_start_transaction_bio(softc->device_stats, bp); 1805 /* 1806 * Some people have theorized that we should 1807 * suppress illegal length indication if we are 1808 * running in variable block mode so that we don't 1809 * have to request sense every time our requested 1810 * block size is larger than the written block. 1811 * The residual information from the ccb allows 1812 * us to identify this situation anyway. The only 1813 * problem with this is that we will not get 1814 * information about blocks that are larger than 1815 * our read buffer unless we set the block size 1816 * in the mode page to something other than 0. 1817 * 1818 * I believe that this is a non-issue. If user apps 1819 * don't adjust their read size to match our record 1820 * size, that's just life. Anyway, the typical usage 1821 * would be to issue, e.g., 64KB reads and occasionally 1822 * have to do deal with 512 byte or 1KB intermediate 1823 * records. 1824 */ 1825 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1826 MTIO_DSREG_RD : MTIO_DSREG_WR; 1827 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1828 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 1829 SCSI_RW_READ : SCSI_RW_WRITE) | 1830 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 1831 SCSI_RW_BIO : 0), FALSE, 1832 (softc->flags & SA_FLAG_FIXED) != 0, length, 1833 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 1834 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1835 IO_TIMEOUT); 1836 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1837 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1838 start_ccb->ccb_h.ccb_bp = bp; 1839 bp = bioq_first(&softc->bio_queue); 1840 xpt_action(start_ccb); 1841 } 1842 1843 if (bp != NULL) { 1844 /* Have more work to do, so ensure we stay scheduled */ 1845 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1846 } 1847 break; 1848 } 1849 case SA_STATE_ABNORMAL: 1850 default: 1851 panic("state 0x%x in sastart", softc->state); 1852 break; 1853 } 1854 } 1855 1856 1857 static void 1858 sadone(struct cam_periph *periph, union ccb *done_ccb) 1859 { 1860 struct sa_softc *softc; 1861 struct ccb_scsiio *csio; 1862 1863 softc = (struct sa_softc *)periph->softc; 1864 csio = &done_ccb->csio; 1865 switch (CCB_Type(csio)) { 1866 case SA_CCB_BUFFER_IO: 1867 { 1868 struct bio *bp; 1869 int error; 1870 1871 softc->dsreg = MTIO_DSREG_REST; 1872 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1873 error = 0; 1874 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1875 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1876 /* 1877 * A retry was scheduled, so just return. 1878 */ 1879 return; 1880 } 1881 } 1882 1883 if (error == EIO) { 1884 1885 /* 1886 * Catastrophic error. Mark the tape as frozen 1887 * (we no longer know tape position). 1888 * 1889 * Return all queued I/O with EIO, and unfreeze 1890 * our queue so that future transactions that 1891 * attempt to fix this problem can get to the 1892 * device. 1893 * 1894 */ 1895 1896 softc->flags |= SA_FLAG_TAPE_FROZEN; 1897 bioq_flush(&softc->bio_queue, NULL, EIO); 1898 } 1899 if (error != 0) { 1900 bp->bio_resid = bp->bio_bcount; 1901 bp->bio_error = error; 1902 bp->bio_flags |= BIO_ERROR; 1903 /* 1904 * In the error case, position is updated in saerror. 1905 */ 1906 } else { 1907 bp->bio_resid = csio->resid; 1908 bp->bio_error = 0; 1909 if (csio->resid != 0) { 1910 bp->bio_flags |= BIO_ERROR; 1911 } 1912 if (bp->bio_cmd == BIO_WRITE) { 1913 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1914 softc->filemarks = 0; 1915 } 1916 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1917 (softc->blkno != (daddr_t) -1)) { 1918 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1919 u_int32_t l; 1920 if (softc->blk_shift != 0) { 1921 l = bp->bio_bcount >> 1922 softc->blk_shift; 1923 } else { 1924 l = bp->bio_bcount / 1925 softc->media_blksize; 1926 } 1927 softc->blkno += (daddr_t) l; 1928 } else { 1929 softc->blkno++; 1930 } 1931 } 1932 } 1933 /* 1934 * If we had an error (immediate or pending), 1935 * release the device queue now. 1936 */ 1937 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1938 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1939 if (error || bp->bio_resid) { 1940 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1941 ("error %d resid %ld count %ld\n", error, 1942 bp->bio_resid, bp->bio_bcount)); 1943 } 1944 biofinish(bp, softc->device_stats, 0); 1945 break; 1946 } 1947 } 1948 xpt_release_ccb(done_ccb); 1949 } 1950 1951 /* 1952 * Mount the tape (make sure it's ready for I/O). 1953 */ 1954 static int 1955 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1956 { 1957 struct sa_softc *softc; 1958 union ccb *ccb; 1959 int error; 1960 1961 /* 1962 * oflags can be checked for 'kind' of open (read-only check) - later 1963 * dev can be checked for a control-mode or compression open - later 1964 */ 1965 UNUSED_PARAMETER(oflags); 1966 UNUSED_PARAMETER(dev); 1967 1968 1969 softc = (struct sa_softc *)periph->softc; 1970 1971 /* 1972 * This should determine if something has happend since the last 1973 * open/mount that would invalidate the mount. We do *not* want 1974 * to retry this command- we just want the status. But we only 1975 * do this if we're mounted already- if we're not mounted, 1976 * we don't care about the unit read state and can instead use 1977 * this opportunity to attempt to reserve the tape unit. 1978 */ 1979 1980 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1981 ccb = cam_periph_getccb(periph, 1); 1982 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1983 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1984 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1985 softc->device_stats); 1986 if (error == ENXIO) { 1987 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1988 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1989 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1990 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1991 softc->device_stats); 1992 } else if (error) { 1993 /* 1994 * We don't need to freeze the tape because we 1995 * will now attempt to rewind/load it. 1996 */ 1997 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1998 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1999 xpt_print(periph->path, 2000 "error %d on TUR in samount\n", error); 2001 } 2002 } 2003 } else { 2004 error = sareservereleaseunit(periph, TRUE); 2005 if (error) { 2006 return (error); 2007 } 2008 ccb = cam_periph_getccb(periph, 1); 2009 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2010 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2011 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2012 softc->device_stats); 2013 } 2014 2015 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2016 struct scsi_read_block_limits_data *rblim = NULL; 2017 int comp_enabled, comp_supported; 2018 u_int8_t write_protect, guessing = 0; 2019 2020 /* 2021 * Clear out old state. 2022 */ 2023 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2024 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 2025 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 2026 softc->filemarks = 0; 2027 2028 /* 2029 * *Very* first off, make sure we're loaded to BOT. 2030 */ 2031 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2032 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2033 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2034 softc->device_stats); 2035 2036 /* 2037 * In case this doesn't work, do a REWIND instead 2038 */ 2039 if (error) { 2040 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2041 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2042 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2043 softc->device_stats); 2044 } 2045 if (error) { 2046 xpt_release_ccb(ccb); 2047 goto exit; 2048 } 2049 2050 /* 2051 * Do a dummy test read to force access to the 2052 * media so that the drive will really know what's 2053 * there. We actually don't really care what the 2054 * blocksize on tape is and don't expect to really 2055 * read a full record. 2056 */ 2057 rblim = (struct scsi_read_block_limits_data *) 2058 malloc(8192, M_SCSISA, M_NOWAIT); 2059 if (rblim == NULL) { 2060 xpt_print(periph->path, "no memory for test read\n"); 2061 xpt_release_ccb(ccb); 2062 error = ENOMEM; 2063 goto exit; 2064 } 2065 2066 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2067 scsi_sa_read_write(&ccb->csio, 0, sadone, 2068 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2069 (void *) rblim, 8192, SSD_FULL_SIZE, 2070 IO_TIMEOUT); 2071 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2072 softc->device_stats); 2073 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2074 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2075 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2076 SF_NO_PRINT | SF_RETRY_UA, 2077 softc->device_stats); 2078 if (error) { 2079 xpt_print(periph->path, 2080 "unable to rewind after test read\n"); 2081 xpt_release_ccb(ccb); 2082 goto exit; 2083 } 2084 } 2085 2086 /* 2087 * Next off, determine block limits. 2088 */ 2089 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2090 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2091 2092 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2093 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2094 2095 xpt_release_ccb(ccb); 2096 2097 if (error != 0) { 2098 /* 2099 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2100 * a MANDATORY command. Anyway- it doesn't matter- 2101 * we can proceed anyway. 2102 */ 2103 softc->blk_gran = 0; 2104 softc->max_blk = ~0; 2105 softc->min_blk = 0; 2106 } else { 2107 if (softc->scsi_rev >= SCSI_REV_SPC) { 2108 softc->blk_gran = RBL_GRAN(rblim); 2109 } else { 2110 softc->blk_gran = 0; 2111 } 2112 /* 2113 * We take max_blk == min_blk to mean a default to 2114 * fixed mode- but note that whatever we get out of 2115 * sagetparams below will actually determine whether 2116 * we are actually *in* fixed mode. 2117 */ 2118 softc->max_blk = scsi_3btoul(rblim->maximum); 2119 softc->min_blk = scsi_2btoul(rblim->minimum); 2120 2121 2122 } 2123 /* 2124 * Next, perform a mode sense to determine 2125 * current density, blocksize, compression etc. 2126 */ 2127 error = sagetparams(periph, SA_PARAM_ALL, 2128 &softc->media_blksize, 2129 &softc->media_density, 2130 &softc->media_numblks, 2131 &softc->buffer_mode, &write_protect, 2132 &softc->speed, &comp_supported, 2133 &comp_enabled, &softc->comp_algorithm, 2134 NULL); 2135 2136 if (error != 0) { 2137 /* 2138 * We could work a little harder here. We could 2139 * adjust our attempts to get information. It 2140 * might be an ancient tape drive. If someone 2141 * nudges us, we'll do that. 2142 */ 2143 goto exit; 2144 } 2145 2146 /* 2147 * If no quirk has determined that this is a device that is 2148 * preferred to be in fixed or variable mode, now is the time 2149 * to find out. 2150 */ 2151 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2152 guessing = 1; 2153 /* 2154 * This could be expensive to find out. Luckily we 2155 * only need to do this once. If we start out in 2156 * 'default' mode, try and set ourselves to one 2157 * of the densities that would determine a wad 2158 * of other stuff. Go from highest to lowest. 2159 */ 2160 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2161 int i; 2162 static u_int8_t ctry[] = { 2163 SCSI_DENSITY_HALFINCH_PE, 2164 SCSI_DENSITY_HALFINCH_6250C, 2165 SCSI_DENSITY_HALFINCH_6250, 2166 SCSI_DENSITY_HALFINCH_1600, 2167 SCSI_DENSITY_HALFINCH_800, 2168 SCSI_DENSITY_QIC_4GB, 2169 SCSI_DENSITY_QIC_2GB, 2170 SCSI_DENSITY_QIC_525_320, 2171 SCSI_DENSITY_QIC_150, 2172 SCSI_DENSITY_QIC_120, 2173 SCSI_DENSITY_QIC_24, 2174 SCSI_DENSITY_QIC_11_9TRK, 2175 SCSI_DENSITY_QIC_11_4TRK, 2176 SCSI_DENSITY_QIC_1320, 2177 SCSI_DENSITY_QIC_3080, 2178 0 2179 }; 2180 for (i = 0; ctry[i]; i++) { 2181 error = sasetparams(periph, 2182 SA_PARAM_DENSITY, 0, ctry[i], 2183 0, SF_NO_PRINT); 2184 if (error == 0) { 2185 softc->media_density = ctry[i]; 2186 break; 2187 } 2188 } 2189 } 2190 switch (softc->media_density) { 2191 case SCSI_DENSITY_QIC_11_4TRK: 2192 case SCSI_DENSITY_QIC_11_9TRK: 2193 case SCSI_DENSITY_QIC_24: 2194 case SCSI_DENSITY_QIC_120: 2195 case SCSI_DENSITY_QIC_150: 2196 case SCSI_DENSITY_QIC_525_320: 2197 case SCSI_DENSITY_QIC_1320: 2198 case SCSI_DENSITY_QIC_3080: 2199 softc->quirks &= ~SA_QUIRK_2FM; 2200 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2201 softc->last_media_blksize = 512; 2202 break; 2203 case SCSI_DENSITY_QIC_4GB: 2204 case SCSI_DENSITY_QIC_2GB: 2205 softc->quirks &= ~SA_QUIRK_2FM; 2206 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2207 softc->last_media_blksize = 1024; 2208 break; 2209 default: 2210 softc->last_media_blksize = 2211 softc->media_blksize; 2212 softc->quirks |= SA_QUIRK_VARIABLE; 2213 break; 2214 } 2215 } 2216 2217 /* 2218 * If no quirk has determined that this is a device that needs 2219 * to have 2 Filemarks at EOD, now is the time to find out. 2220 */ 2221 2222 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2223 switch (softc->media_density) { 2224 case SCSI_DENSITY_HALFINCH_800: 2225 case SCSI_DENSITY_HALFINCH_1600: 2226 case SCSI_DENSITY_HALFINCH_6250: 2227 case SCSI_DENSITY_HALFINCH_6250C: 2228 case SCSI_DENSITY_HALFINCH_PE: 2229 softc->quirks &= ~SA_QUIRK_1FM; 2230 softc->quirks |= SA_QUIRK_2FM; 2231 break; 2232 default: 2233 break; 2234 } 2235 } 2236 2237 /* 2238 * Now validate that some info we got makes sense. 2239 */ 2240 if ((softc->max_blk < softc->media_blksize) || 2241 (softc->min_blk > softc->media_blksize && 2242 softc->media_blksize)) { 2243 xpt_print(periph->path, 2244 "BLOCK LIMITS (%d..%d) could not match current " 2245 "block settings (%d)- adjusting\n", softc->min_blk, 2246 softc->max_blk, softc->media_blksize); 2247 softc->max_blk = softc->min_blk = 2248 softc->media_blksize; 2249 } 2250 2251 /* 2252 * Now put ourselves into the right frame of mind based 2253 * upon quirks... 2254 */ 2255 tryagain: 2256 /* 2257 * If we want to be in FIXED mode and our current blocksize 2258 * is not equal to our last blocksize (if nonzero), try and 2259 * set ourselves to this last blocksize (as the 'preferred' 2260 * block size). The initial quirkmatch at registry sets the 2261 * initial 'last' blocksize. If, for whatever reason, this 2262 * 'last' blocksize is zero, set the blocksize to 512, 2263 * or min_blk if that's larger. 2264 */ 2265 if ((softc->quirks & SA_QUIRK_FIXED) && 2266 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2267 (softc->media_blksize != softc->last_media_blksize)) { 2268 softc->media_blksize = softc->last_media_blksize; 2269 if (softc->media_blksize == 0) { 2270 softc->media_blksize = 512; 2271 if (softc->media_blksize < softc->min_blk) { 2272 softc->media_blksize = softc->min_blk; 2273 } 2274 } 2275 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2276 softc->media_blksize, 0, 0, SF_NO_PRINT); 2277 if (error) { 2278 xpt_print(periph->path, 2279 "unable to set fixed blocksize to %d\n", 2280 softc->media_blksize); 2281 goto exit; 2282 } 2283 } 2284 2285 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2286 (softc->media_blksize != 0)) { 2287 softc->last_media_blksize = softc->media_blksize; 2288 softc->media_blksize = 0; 2289 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2290 0, 0, 0, SF_NO_PRINT); 2291 if (error) { 2292 /* 2293 * If this fails and we were guessing, just 2294 * assume that we got it wrong and go try 2295 * fixed block mode. Don't even check against 2296 * density code at this point. 2297 */ 2298 if (guessing) { 2299 softc->quirks &= ~SA_QUIRK_VARIABLE; 2300 softc->quirks |= SA_QUIRK_FIXED; 2301 if (softc->last_media_blksize == 0) 2302 softc->last_media_blksize = 512; 2303 goto tryagain; 2304 } 2305 xpt_print(periph->path, 2306 "unable to set variable blocksize\n"); 2307 goto exit; 2308 } 2309 } 2310 2311 /* 2312 * Now that we have the current block size, 2313 * set up some parameters for sastart's usage. 2314 */ 2315 if (softc->media_blksize) { 2316 softc->flags |= SA_FLAG_FIXED; 2317 if (powerof2(softc->media_blksize)) { 2318 softc->blk_shift = 2319 ffs(softc->media_blksize) - 1; 2320 softc->blk_mask = softc->media_blksize - 1; 2321 } else { 2322 softc->blk_mask = ~0; 2323 softc->blk_shift = 0; 2324 } 2325 } else { 2326 /* 2327 * The SCSI-3 spec allows 0 to mean "unspecified". 2328 * The SCSI-1 spec allows 0 to mean 'infinite'. 2329 * 2330 * Either works here. 2331 */ 2332 if (softc->max_blk == 0) { 2333 softc->max_blk = ~0; 2334 } 2335 softc->blk_shift = 0; 2336 if (softc->blk_gran != 0) { 2337 softc->blk_mask = softc->blk_gran - 1; 2338 } else { 2339 softc->blk_mask = 0; 2340 } 2341 } 2342 2343 if (write_protect) 2344 softc->flags |= SA_FLAG_TAPE_WP; 2345 2346 if (comp_supported) { 2347 if (softc->saved_comp_algorithm == 0) 2348 softc->saved_comp_algorithm = 2349 softc->comp_algorithm; 2350 softc->flags |= SA_FLAG_COMP_SUPP; 2351 if (comp_enabled) 2352 softc->flags |= SA_FLAG_COMP_ENABLED; 2353 } else 2354 softc->flags |= SA_FLAG_COMP_UNSUPP; 2355 2356 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2357 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2358 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2359 0, 0, SF_NO_PRINT); 2360 if (error == 0) { 2361 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2362 } else { 2363 xpt_print(periph->path, 2364 "unable to set buffered mode\n"); 2365 } 2366 error = 0; /* not an error */ 2367 } 2368 2369 2370 if (error == 0) { 2371 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2372 } 2373 exit: 2374 if (rblim != NULL) 2375 free(rblim, M_SCSISA); 2376 2377 if (error != 0) { 2378 softc->dsreg = MTIO_DSREG_NIL; 2379 } else { 2380 softc->fileno = softc->blkno = 0; 2381 softc->dsreg = MTIO_DSREG_REST; 2382 } 2383 #ifdef SA_1FM_AT_EOD 2384 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2385 softc->quirks |= SA_QUIRK_1FM; 2386 #else 2387 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2388 softc->quirks |= SA_QUIRK_2FM; 2389 #endif 2390 } else 2391 xpt_release_ccb(ccb); 2392 2393 /* 2394 * If we return an error, we're not mounted any more, 2395 * so release any device reservation. 2396 */ 2397 if (error != 0) { 2398 (void) sareservereleaseunit(periph, FALSE); 2399 } else { 2400 /* 2401 * Clear I/O residual. 2402 */ 2403 softc->last_io_resid = 0; 2404 softc->last_ctl_resid = 0; 2405 } 2406 return (error); 2407 } 2408 2409 /* 2410 * How many filemarks do we need to write if we were to terminate the 2411 * tape session right now? Note that this can be a negative number 2412 */ 2413 2414 static int 2415 samarkswanted(struct cam_periph *periph) 2416 { 2417 int markswanted; 2418 struct sa_softc *softc; 2419 2420 softc = (struct sa_softc *)periph->softc; 2421 markswanted = 0; 2422 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2423 markswanted++; 2424 if (softc->quirks & SA_QUIRK_2FM) 2425 markswanted++; 2426 } 2427 markswanted -= softc->filemarks; 2428 return (markswanted); 2429 } 2430 2431 static int 2432 sacheckeod(struct cam_periph *periph) 2433 { 2434 int error; 2435 int markswanted; 2436 2437 markswanted = samarkswanted(periph); 2438 2439 if (markswanted > 0) { 2440 error = sawritefilemarks(periph, markswanted, FALSE); 2441 } else { 2442 error = 0; 2443 } 2444 return (error); 2445 } 2446 2447 static int 2448 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2449 { 2450 static const char *toobig = 2451 "%d-byte tape record bigger than supplied buffer\n"; 2452 struct cam_periph *periph; 2453 struct sa_softc *softc; 2454 struct ccb_scsiio *csio; 2455 struct scsi_sense_data *sense; 2456 uint64_t resid = 0; 2457 int64_t info = 0; 2458 cam_status status; 2459 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 2460 int sense_len; 2461 uint8_t stream_bits; 2462 2463 periph = xpt_path_periph(ccb->ccb_h.path); 2464 softc = (struct sa_softc *)periph->softc; 2465 csio = &ccb->csio; 2466 sense = &csio->sense_data; 2467 sense_len = csio->sense_len - csio->sense_resid; 2468 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 2469 &asc, &ascq, /*show_errors*/ 1); 2470 if (asc != -1 && ascq != -1) 2471 aqvalid = 1; 2472 else 2473 aqvalid = 0; 2474 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 2475 stream_valid = 1; 2476 else 2477 stream_valid = 0; 2478 error = 0; 2479 2480 status = csio->ccb_h.status & CAM_STATUS_MASK; 2481 2482 /* 2483 * Calculate/latch up, any residuals... We do this in a funny 2-step 2484 * so we can print stuff here if we have CAM_DEBUG enabled for this 2485 * unit. 2486 */ 2487 if (status == CAM_SCSI_STATUS_ERROR) { 2488 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 2489 &info) == 0) { 2490 if ((softc->flags & SA_FLAG_FIXED) != 0) 2491 resid *= softc->media_blksize; 2492 } else { 2493 resid = csio->dxfer_len; 2494 info = resid; 2495 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2496 if (softc->media_blksize) 2497 info /= softc->media_blksize; 2498 } 2499 } 2500 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2501 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2502 sizeof (struct scsi_sense_data)); 2503 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2504 (int) csio->cdb_len); 2505 softc->last_io_resid = resid; 2506 softc->last_resid_was_io = 1; 2507 } else { 2508 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2509 sizeof (struct scsi_sense_data)); 2510 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2511 (int) csio->cdb_len); 2512 softc->last_ctl_resid = resid; 2513 softc->last_resid_was_io = 0; 2514 } 2515 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2516 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 2517 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2518 sense_key, asc, ascq, status, 2519 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 2520 csio->dxfer_len)); 2521 } else { 2522 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2523 ("Cam Status 0x%x\n", status)); 2524 } 2525 2526 switch (status) { 2527 case CAM_REQ_CMP: 2528 return (0); 2529 case CAM_SCSI_STATUS_ERROR: 2530 /* 2531 * If a read/write command, we handle it here. 2532 */ 2533 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 2534 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2535 break; 2536 } 2537 /* 2538 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2539 * on a non read/write command, we assume it's not an error 2540 * and propagate the residule and return. 2541 */ 2542 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2543 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2544 csio->resid = resid; 2545 QFRLS(ccb); 2546 return (0); 2547 } 2548 /* 2549 * Otherwise, we let the common code handle this. 2550 */ 2551 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2552 2553 /* 2554 * XXX: To Be Fixed 2555 * We cannot depend upon CAM honoring retry counts for these. 2556 */ 2557 case CAM_SCSI_BUS_RESET: 2558 case CAM_BDR_SENT: 2559 if (ccb->ccb_h.retry_count <= 0) { 2560 return (EIO); 2561 } 2562 /* FALLTHROUGH */ 2563 default: 2564 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2565 } 2566 2567 /* 2568 * Handle filemark, end of tape, mismatched record sizes.... 2569 * From this point out, we're only handling read/write cases. 2570 * Handle writes && reads differently. 2571 */ 2572 2573 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2574 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2575 csio->resid = resid; 2576 error = ENOSPC; 2577 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 2578 softc->flags |= SA_FLAG_EOM_PENDING; 2579 /* 2580 * Grotesque as it seems, the few times 2581 * I've actually seen a non-zero resid, 2582 * the tape drive actually lied and had 2583 * written all the data!. 2584 */ 2585 csio->resid = 0; 2586 } 2587 } else { 2588 csio->resid = resid; 2589 if (sense_key == SSD_KEY_BLANK_CHECK) { 2590 if (softc->quirks & SA_QUIRK_1FM) { 2591 error = 0; 2592 softc->flags |= SA_FLAG_EOM_PENDING; 2593 } else { 2594 error = EIO; 2595 } 2596 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 2597 if (softc->flags & SA_FLAG_FIXED) { 2598 error = -1; 2599 softc->flags |= SA_FLAG_EOF_PENDING; 2600 } 2601 /* 2602 * Unconditionally, if we detected a filemark on a read, 2603 * mark that we've run moved a file ahead. 2604 */ 2605 if (softc->fileno != (daddr_t) -1) { 2606 softc->fileno++; 2607 softc->blkno = 0; 2608 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2609 } 2610 } 2611 } 2612 2613 /* 2614 * Incorrect Length usually applies to read, but can apply to writes. 2615 */ 2616 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 2617 if (info < 0) { 2618 xpt_print(csio->ccb_h.path, toobig, 2619 csio->dxfer_len - info); 2620 csio->resid = csio->dxfer_len; 2621 error = EIO; 2622 } else { 2623 csio->resid = resid; 2624 if (softc->flags & SA_FLAG_FIXED) { 2625 softc->flags |= SA_FLAG_EIO_PENDING; 2626 } 2627 /* 2628 * Bump the block number if we hadn't seen a filemark. 2629 * Do this independent of errors (we've moved anyway). 2630 */ 2631 if ((stream_valid == 0) || 2632 (stream_bits & SSD_FILEMARK) == 0) { 2633 if (softc->blkno != (daddr_t) -1) { 2634 softc->blkno++; 2635 csio->ccb_h.ccb_pflags |= 2636 SA_POSITION_UPDATED; 2637 } 2638 } 2639 } 2640 } 2641 2642 if (error <= 0) { 2643 /* 2644 * Unfreeze the queue if frozen as we're not returning anything 2645 * to our waiters that would indicate an I/O error has occurred 2646 * (yet). 2647 */ 2648 QFRLS(ccb); 2649 error = 0; 2650 } 2651 return (error); 2652 } 2653 2654 static int 2655 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2656 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2657 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2658 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2659 sa_comp_t *tcs) 2660 { 2661 union ccb *ccb; 2662 void *mode_buffer; 2663 struct scsi_mode_header_6 *mode_hdr; 2664 struct scsi_mode_blk_desc *mode_blk; 2665 int mode_buffer_len; 2666 struct sa_softc *softc; 2667 u_int8_t cpage; 2668 int error; 2669 cam_status status; 2670 2671 softc = (struct sa_softc *)periph->softc; 2672 ccb = cam_periph_getccb(periph, 1); 2673 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2674 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2675 else 2676 cpage = SA_DATA_COMPRESSION_PAGE; 2677 2678 retry: 2679 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2680 2681 if (params_to_get & SA_PARAM_COMPRESSION) { 2682 if (softc->quirks & SA_QUIRK_NOCOMP) { 2683 *comp_supported = FALSE; 2684 params_to_get &= ~SA_PARAM_COMPRESSION; 2685 } else 2686 mode_buffer_len += sizeof (sa_comp_t); 2687 } 2688 2689 /* XXX Fix M_NOWAIT */ 2690 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2691 if (mode_buffer == NULL) { 2692 xpt_release_ccb(ccb); 2693 return (ENOMEM); 2694 } 2695 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2696 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2697 2698 /* it is safe to retry this */ 2699 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2700 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2701 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2702 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2703 2704 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2705 softc->device_stats); 2706 2707 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2708 2709 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2710 /* 2711 * Hmm. Let's see if we can try another page... 2712 * If we've already done that, give up on compression 2713 * for this device and remember this for the future 2714 * and attempt the request without asking for compression 2715 * info. 2716 */ 2717 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2718 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2719 goto retry; 2720 } 2721 softc->quirks |= SA_QUIRK_NOCOMP; 2722 free(mode_buffer, M_SCSISA); 2723 goto retry; 2724 } else if (status == CAM_SCSI_STATUS_ERROR) { 2725 /* Tell the user about the fatal error. */ 2726 scsi_sense_print(&ccb->csio); 2727 goto sagetparamsexit; 2728 } 2729 2730 /* 2731 * If the user only wants the compression information, and 2732 * the device doesn't send back the block descriptor, it's 2733 * no big deal. If the user wants more than just 2734 * compression, though, and the device doesn't pass back the 2735 * block descriptor, we need to send another mode sense to 2736 * get the block descriptor. 2737 */ 2738 if ((mode_hdr->blk_desc_len == 0) && 2739 (params_to_get & SA_PARAM_COMPRESSION) && 2740 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2741 2742 /* 2743 * Decrease the mode buffer length by the size of 2744 * the compression page, to make sure the data 2745 * there doesn't get overwritten. 2746 */ 2747 mode_buffer_len -= sizeof (sa_comp_t); 2748 2749 /* 2750 * Now move the compression page that we presumably 2751 * got back down the memory chunk a little bit so 2752 * it doesn't get spammed. 2753 */ 2754 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2755 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2756 2757 /* 2758 * Now, we issue another mode sense and just ask 2759 * for the block descriptor, etc. 2760 */ 2761 2762 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2763 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2764 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2765 SCSIOP_TIMEOUT); 2766 2767 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2768 softc->device_stats); 2769 2770 if (error != 0) 2771 goto sagetparamsexit; 2772 } 2773 2774 if (params_to_get & SA_PARAM_BLOCKSIZE) 2775 *blocksize = scsi_3btoul(mode_blk->blklen); 2776 2777 if (params_to_get & SA_PARAM_NUMBLOCKS) 2778 *numblocks = scsi_3btoul(mode_blk->nblocks); 2779 2780 if (params_to_get & SA_PARAM_BUFF_MODE) 2781 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2782 2783 if (params_to_get & SA_PARAM_DENSITY) 2784 *density = mode_blk->density; 2785 2786 if (params_to_get & SA_PARAM_WP) 2787 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2788 2789 if (params_to_get & SA_PARAM_SPEED) 2790 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2791 2792 if (params_to_get & SA_PARAM_COMPRESSION) { 2793 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2794 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2795 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2796 *comp_supported = 2797 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2798 *comp_enabled = 2799 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2800 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2801 } else { 2802 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2803 /* 2804 * We don't really know whether this device supports 2805 * Data Compression if the algorithm field is 2806 * zero. Just say we do. 2807 */ 2808 *comp_supported = TRUE; 2809 *comp_enabled = 2810 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2811 *comp_algorithm = cp->sel_comp_alg; 2812 } 2813 if (tcs != NULL) 2814 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2815 } 2816 2817 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2818 int idx; 2819 char *xyz = mode_buffer; 2820 xpt_print_path(periph->path); 2821 printf("Mode Sense Data="); 2822 for (idx = 0; idx < mode_buffer_len; idx++) 2823 printf(" 0x%02x", xyz[idx] & 0xff); 2824 printf("\n"); 2825 } 2826 2827 sagetparamsexit: 2828 2829 xpt_release_ccb(ccb); 2830 free(mode_buffer, M_SCSISA); 2831 return (error); 2832 } 2833 2834 /* 2835 * The purpose of this function is to set one of four different parameters 2836 * for a tape drive: 2837 * - blocksize 2838 * - density 2839 * - compression / compression algorithm 2840 * - buffering mode 2841 * 2842 * The assumption is that this will be called from saioctl(), and therefore 2843 * from a process context. Thus the waiting malloc calls below. If that 2844 * assumption ever changes, the malloc calls should be changed to be 2845 * NOWAIT mallocs. 2846 * 2847 * Any or all of the four parameters may be set when this function is 2848 * called. It should handle setting more than one parameter at once. 2849 */ 2850 static int 2851 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2852 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2853 u_int32_t sense_flags) 2854 { 2855 struct sa_softc *softc; 2856 u_int32_t current_blocksize; 2857 u_int32_t current_calg; 2858 u_int8_t current_density; 2859 u_int8_t current_speed; 2860 int comp_enabled, comp_supported; 2861 void *mode_buffer; 2862 int mode_buffer_len; 2863 struct scsi_mode_header_6 *mode_hdr; 2864 struct scsi_mode_blk_desc *mode_blk; 2865 sa_comp_t *ccomp, *cpage; 2866 int buff_mode; 2867 union ccb *ccb = NULL; 2868 int error; 2869 2870 softc = (struct sa_softc *)periph->softc; 2871 2872 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2873 if (ccomp == NULL) 2874 return (ENOMEM); 2875 2876 /* 2877 * Since it doesn't make sense to set the number of blocks, or 2878 * write protection, we won't try to get the current value. We 2879 * always want to get the blocksize, so we can set it back to the 2880 * proper value. 2881 */ 2882 error = sagetparams(periph, 2883 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2884 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2885 ¤t_speed, &comp_supported, &comp_enabled, 2886 ¤t_calg, ccomp); 2887 2888 if (error != 0) { 2889 free(ccomp, M_SCSISA); 2890 return (error); 2891 } 2892 2893 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2894 if (params_to_set & SA_PARAM_COMPRESSION) 2895 mode_buffer_len += sizeof (sa_comp_t); 2896 2897 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2898 if (mode_buffer == NULL) { 2899 free(ccomp, M_SCSISA); 2900 return (ENOMEM); 2901 } 2902 2903 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2904 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2905 2906 ccb = cam_periph_getccb(periph, 1); 2907 2908 retry: 2909 2910 if (params_to_set & SA_PARAM_COMPRESSION) { 2911 if (mode_blk) { 2912 cpage = (sa_comp_t *)&mode_blk[1]; 2913 } else { 2914 cpage = (sa_comp_t *)&mode_hdr[1]; 2915 } 2916 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2917 cpage->hdr.pagecode &= ~0x80; 2918 } else 2919 cpage = NULL; 2920 2921 /* 2922 * If the caller wants us to set the blocksize, use the one they 2923 * pass in. Otherwise, use the blocksize we got back from the 2924 * mode select above. 2925 */ 2926 if (mode_blk) { 2927 if (params_to_set & SA_PARAM_BLOCKSIZE) 2928 scsi_ulto3b(blocksize, mode_blk->blklen); 2929 else 2930 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2931 2932 /* 2933 * Set density if requested, else preserve old density. 2934 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2935 * devices, else density we've latched up in our softc. 2936 */ 2937 if (params_to_set & SA_PARAM_DENSITY) { 2938 mode_blk->density = density; 2939 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2940 mode_blk->density = SCSI_SAME_DENSITY; 2941 } else { 2942 mode_blk->density = softc->media_density; 2943 } 2944 } 2945 2946 /* 2947 * For mode selects, these two fields must be zero. 2948 */ 2949 mode_hdr->data_length = 0; 2950 mode_hdr->medium_type = 0; 2951 2952 /* set the speed to the current value */ 2953 mode_hdr->dev_spec = current_speed; 2954 2955 /* if set, set single-initiator buffering mode */ 2956 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2957 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2958 } 2959 2960 if (mode_blk) 2961 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2962 else 2963 mode_hdr->blk_desc_len = 0; 2964 2965 /* 2966 * First, if the user wants us to set the compression algorithm or 2967 * just turn compression on, check to make sure that this drive 2968 * supports compression. 2969 */ 2970 if (params_to_set & SA_PARAM_COMPRESSION) { 2971 /* 2972 * If the compression algorithm is 0, disable compression. 2973 * If the compression algorithm is non-zero, enable 2974 * compression and set the compression type to the 2975 * specified compression algorithm, unless the algorithm is 2976 * MT_COMP_ENABLE. In that case, we look at the 2977 * compression algorithm that is currently set and if it is 2978 * non-zero, we leave it as-is. If it is zero, and we have 2979 * saved a compression algorithm from a time when 2980 * compression was enabled before, set the compression to 2981 * the saved value. 2982 */ 2983 switch (ccomp->hdr.pagecode & ~0x80) { 2984 case SA_DEVICE_CONFIGURATION_PAGE: 2985 { 2986 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2987 if (calg == 0) { 2988 dcp->sel_comp_alg = SA_COMP_NONE; 2989 break; 2990 } 2991 if (calg != MT_COMP_ENABLE) { 2992 dcp->sel_comp_alg = calg; 2993 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2994 softc->saved_comp_algorithm != 0) { 2995 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2996 } 2997 break; 2998 } 2999 case SA_DATA_COMPRESSION_PAGE: 3000 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 3001 struct scsi_data_compression_page *dcp = &cpage->dcomp; 3002 if (calg == 0) { 3003 /* 3004 * Disable compression, but leave the 3005 * decompression and the capability bit 3006 * alone. 3007 */ 3008 dcp->dce_and_dcc = SA_DCP_DCC; 3009 dcp->dde_and_red |= SA_DCP_DDE; 3010 break; 3011 } 3012 /* enable compression && decompression */ 3013 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 3014 dcp->dde_and_red |= SA_DCP_DDE; 3015 /* 3016 * If there, use compression algorithm from caller. 3017 * Otherwise, if there's a saved compression algorithm 3018 * and there is no current algorithm, use the saved 3019 * algorithm. Else parrot back what we got and hope 3020 * for the best. 3021 */ 3022 if (calg != MT_COMP_ENABLE) { 3023 scsi_ulto4b(calg, dcp->comp_algorithm); 3024 scsi_ulto4b(calg, dcp->decomp_algorithm); 3025 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 3026 softc->saved_comp_algorithm != 0) { 3027 scsi_ulto4b(softc->saved_comp_algorithm, 3028 dcp->comp_algorithm); 3029 scsi_ulto4b(softc->saved_comp_algorithm, 3030 dcp->decomp_algorithm); 3031 } 3032 break; 3033 } 3034 /* 3035 * Compression does not appear to be supported- 3036 * at least via the DATA COMPRESSION page. It 3037 * would be too much to ask us to believe that 3038 * the page itself is supported, but incorrectly 3039 * reports an ability to manipulate data compression, 3040 * so we'll assume that this device doesn't support 3041 * compression. We can just fall through for that. 3042 */ 3043 /* FALLTHROUGH */ 3044 default: 3045 /* 3046 * The drive doesn't seem to support compression, 3047 * so turn off the set compression bit. 3048 */ 3049 params_to_set &= ~SA_PARAM_COMPRESSION; 3050 xpt_print(periph->path, 3051 "device does not seem to support compression\n"); 3052 3053 /* 3054 * If that was the only thing the user wanted us to set, 3055 * clean up allocated resources and return with 3056 * 'operation not supported'. 3057 */ 3058 if (params_to_set == SA_PARAM_NONE) { 3059 free(mode_buffer, M_SCSISA); 3060 xpt_release_ccb(ccb); 3061 return (ENODEV); 3062 } 3063 3064 /* 3065 * That wasn't the only thing the user wanted us to set. 3066 * So, decrease the stated mode buffer length by the 3067 * size of the compression mode page. 3068 */ 3069 mode_buffer_len -= sizeof(sa_comp_t); 3070 } 3071 } 3072 3073 /* It is safe to retry this operation */ 3074 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 3075 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 3076 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3077 3078 error = cam_periph_runccb(ccb, saerror, 0, 3079 sense_flags, softc->device_stats); 3080 3081 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3082 int idx; 3083 char *xyz = mode_buffer; 3084 xpt_print_path(periph->path); 3085 printf("Err%d, Mode Select Data=", error); 3086 for (idx = 0; idx < mode_buffer_len; idx++) 3087 printf(" 0x%02x", xyz[idx] & 0xff); 3088 printf("\n"); 3089 } 3090 3091 3092 if (error) { 3093 /* 3094 * If we can, try without setting density/blocksize. 3095 */ 3096 if (mode_blk) { 3097 if ((params_to_set & 3098 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 3099 mode_blk = NULL; 3100 goto retry; 3101 } 3102 } else { 3103 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3104 cpage = (sa_comp_t *)&mode_blk[1]; 3105 } 3106 3107 /* 3108 * If we were setting the blocksize, and that failed, we 3109 * want to set it to its original value. If we weren't 3110 * setting the blocksize, we don't want to change it. 3111 */ 3112 scsi_ulto3b(current_blocksize, mode_blk->blklen); 3113 3114 /* 3115 * Set density if requested, else preserve old density. 3116 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 3117 * devices, else density we've latched up in our softc. 3118 */ 3119 if (params_to_set & SA_PARAM_DENSITY) { 3120 mode_blk->density = current_density; 3121 } else if (softc->scsi_rev > SCSI_REV_CCS) { 3122 mode_blk->density = SCSI_SAME_DENSITY; 3123 } else { 3124 mode_blk->density = softc->media_density; 3125 } 3126 3127 if (params_to_set & SA_PARAM_COMPRESSION) 3128 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3129 3130 /* 3131 * The retry count is the only CCB field that might have been 3132 * changed that we care about, so reset it back to 1. 3133 */ 3134 ccb->ccb_h.retry_count = 1; 3135 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3136 softc->device_stats); 3137 } 3138 3139 xpt_release_ccb(ccb); 3140 3141 if (ccomp != NULL) 3142 free(ccomp, M_SCSISA); 3143 3144 if (params_to_set & SA_PARAM_COMPRESSION) { 3145 if (error) { 3146 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3147 /* 3148 * Even if we get an error setting compression, 3149 * do not say that we don't support it. We could 3150 * have been wrong, or it may be media specific. 3151 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3152 */ 3153 softc->saved_comp_algorithm = softc->comp_algorithm; 3154 softc->comp_algorithm = 0; 3155 } else { 3156 softc->flags |= SA_FLAG_COMP_ENABLED; 3157 softc->comp_algorithm = calg; 3158 } 3159 } 3160 3161 free(mode_buffer, M_SCSISA); 3162 return (error); 3163 } 3164 3165 static void 3166 saprevent(struct cam_periph *periph, int action) 3167 { 3168 struct sa_softc *softc; 3169 union ccb *ccb; 3170 int error, sf; 3171 3172 softc = (struct sa_softc *)periph->softc; 3173 3174 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3175 return; 3176 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3177 return; 3178 3179 /* 3180 * We can be quiet about illegal requests. 3181 */ 3182 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3183 sf = 0; 3184 } else 3185 sf = SF_QUIET_IR; 3186 3187 ccb = cam_periph_getccb(periph, 1); 3188 3189 /* It is safe to retry this operation */ 3190 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3191 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3192 3193 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3194 if (error == 0) { 3195 if (action == PR_ALLOW) 3196 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3197 else 3198 softc->flags |= SA_FLAG_TAPE_LOCKED; 3199 } 3200 3201 xpt_release_ccb(ccb); 3202 } 3203 3204 static int 3205 sarewind(struct cam_periph *periph) 3206 { 3207 union ccb *ccb; 3208 struct sa_softc *softc; 3209 int error; 3210 3211 softc = (struct sa_softc *)periph->softc; 3212 3213 ccb = cam_periph_getccb(periph, 1); 3214 3215 /* It is safe to retry this operation */ 3216 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3217 SSD_FULL_SIZE, REWIND_TIMEOUT); 3218 3219 softc->dsreg = MTIO_DSREG_REW; 3220 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3221 softc->dsreg = MTIO_DSREG_REST; 3222 3223 xpt_release_ccb(ccb); 3224 if (error == 0) 3225 softc->fileno = softc->blkno = (daddr_t) 0; 3226 else 3227 softc->fileno = softc->blkno = (daddr_t) -1; 3228 return (error); 3229 } 3230 3231 static int 3232 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3233 { 3234 union ccb *ccb; 3235 struct sa_softc *softc; 3236 int error; 3237 3238 softc = (struct sa_softc *)periph->softc; 3239 3240 ccb = cam_periph_getccb(periph, 1); 3241 3242 /* This cannot be retried */ 3243 3244 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3245 SSD_FULL_SIZE, SPACE_TIMEOUT); 3246 3247 /* 3248 * Clear residual because we will be using it. 3249 */ 3250 softc->last_ctl_resid = 0; 3251 3252 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3253 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3254 softc->dsreg = MTIO_DSREG_REST; 3255 3256 xpt_release_ccb(ccb); 3257 3258 /* 3259 * If a spacing operation has failed, we need to invalidate 3260 * this mount. 3261 * 3262 * If the spacing operation was setmarks or to end of recorded data, 3263 * we no longer know our relative position. 3264 * 3265 * If the spacing operations was spacing files in reverse, we 3266 * take account of the residual, but still check against less 3267 * than zero- if we've gone negative, we must have hit BOT. 3268 * 3269 * If the spacing operations was spacing records in reverse and 3270 * we have a residual, we've either hit BOT or hit a filemark. 3271 * In the former case, we know our new record number (0). In 3272 * the latter case, we have absolutely no idea what the real 3273 * record number is- we've stopped between the end of the last 3274 * record in the previous file and the filemark that stopped 3275 * our spacing backwards. 3276 */ 3277 if (error) { 3278 softc->fileno = softc->blkno = (daddr_t) -1; 3279 } else if (code == SS_SETMARKS || code == SS_EOD) { 3280 softc->fileno = softc->blkno = (daddr_t) -1; 3281 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3282 softc->fileno += (count - softc->last_ctl_resid); 3283 if (softc->fileno < 0) /* we must of hit BOT */ 3284 softc->fileno = 0; 3285 softc->blkno = 0; 3286 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3287 softc->blkno += (count - softc->last_ctl_resid); 3288 if (count < 0) { 3289 if (softc->last_ctl_resid || softc->blkno < 0) { 3290 if (softc->fileno == 0) { 3291 softc->blkno = 0; 3292 } else { 3293 softc->blkno = (daddr_t) -1; 3294 } 3295 } 3296 } 3297 } 3298 return (error); 3299 } 3300 3301 static int 3302 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3303 { 3304 union ccb *ccb; 3305 struct sa_softc *softc; 3306 int error, nwm = 0; 3307 3308 softc = (struct sa_softc *)periph->softc; 3309 if (softc->open_rdonly) 3310 return (EBADF); 3311 3312 ccb = cam_periph_getccb(periph, 1); 3313 /* 3314 * Clear residual because we will be using it. 3315 */ 3316 softc->last_ctl_resid = 0; 3317 3318 softc->dsreg = MTIO_DSREG_FMK; 3319 /* this *must* not be retried */ 3320 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3321 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3322 softc->dsreg = MTIO_DSREG_REST; 3323 3324 3325 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3326 3327 if (error == 0 && nmarks) { 3328 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3329 nwm = nmarks - softc->last_ctl_resid; 3330 softc->filemarks += nwm; 3331 } 3332 3333 xpt_release_ccb(ccb); 3334 3335 /* 3336 * Update relative positions (if we're doing that). 3337 */ 3338 if (error) { 3339 softc->fileno = softc->blkno = (daddr_t) -1; 3340 } else if (softc->fileno != (daddr_t) -1) { 3341 softc->fileno += nwm; 3342 softc->blkno = 0; 3343 } 3344 return (error); 3345 } 3346 3347 static int 3348 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3349 { 3350 struct scsi_tape_position_data loc; 3351 union ccb *ccb; 3352 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3353 int error; 3354 3355 /* 3356 * We try and flush any buffered writes here if we were writing 3357 * and we're trying to get hardware block position. It eats 3358 * up performance substantially, but I'm wary of drive firmware. 3359 * 3360 * I think that *logical* block position is probably okay- 3361 * but hardware block position might have to wait for data 3362 * to hit media to be valid. Caveat Emptor. 3363 */ 3364 3365 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3366 error = sawritefilemarks(periph, 0, 0); 3367 if (error && error != EACCES) 3368 return (error); 3369 } 3370 3371 ccb = cam_periph_getccb(periph, 1); 3372 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3373 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3374 softc->dsreg = MTIO_DSREG_RBSY; 3375 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3376 softc->dsreg = MTIO_DSREG_REST; 3377 3378 if (error == 0) { 3379 if (loc.flags & SA_RPOS_UNCERTAIN) { 3380 error = EINVAL; /* nothing is certain */ 3381 } else { 3382 *blkptr = scsi_4btoul(loc.firstblk); 3383 } 3384 } 3385 3386 xpt_release_ccb(ccb); 3387 return (error); 3388 } 3389 3390 static int 3391 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3392 { 3393 union ccb *ccb; 3394 struct sa_softc *softc; 3395 int error; 3396 3397 /* 3398 * We used to try and flush any buffered writes here. 3399 * Now we push this onto user applications to either 3400 * flush the pending writes themselves (via a zero count 3401 * WRITE FILEMARKS command) or they can trust their tape 3402 * drive to do this correctly for them. 3403 */ 3404 3405 softc = (struct sa_softc *)periph->softc; 3406 ccb = cam_periph_getccb(periph, 1); 3407 3408 3409 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3410 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3411 3412 3413 softc->dsreg = MTIO_DSREG_POS; 3414 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3415 softc->dsreg = MTIO_DSREG_REST; 3416 xpt_release_ccb(ccb); 3417 /* 3418 * Note relative file && block number position as now unknown. 3419 */ 3420 softc->fileno = softc->blkno = (daddr_t) -1; 3421 return (error); 3422 } 3423 3424 static int 3425 saretension(struct cam_periph *periph) 3426 { 3427 union ccb *ccb; 3428 struct sa_softc *softc; 3429 int error; 3430 3431 softc = (struct sa_softc *)periph->softc; 3432 3433 ccb = cam_periph_getccb(periph, 1); 3434 3435 /* It is safe to retry this operation */ 3436 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3437 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3438 3439 softc->dsreg = MTIO_DSREG_TEN; 3440 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3441 softc->dsreg = MTIO_DSREG_REST; 3442 3443 xpt_release_ccb(ccb); 3444 if (error == 0) 3445 softc->fileno = softc->blkno = (daddr_t) 0; 3446 else 3447 softc->fileno = softc->blkno = (daddr_t) -1; 3448 return (error); 3449 } 3450 3451 static int 3452 sareservereleaseunit(struct cam_periph *periph, int reserve) 3453 { 3454 union ccb *ccb; 3455 struct sa_softc *softc; 3456 int error; 3457 3458 softc = (struct sa_softc *)periph->softc; 3459 ccb = cam_periph_getccb(periph, 1); 3460 3461 /* It is safe to retry this operation */ 3462 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3463 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3464 softc->dsreg = MTIO_DSREG_RBSY; 3465 error = cam_periph_runccb(ccb, saerror, 0, 3466 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3467 softc->dsreg = MTIO_DSREG_REST; 3468 xpt_release_ccb(ccb); 3469 3470 /* 3471 * If the error was Illegal Request, then the device doesn't support 3472 * RESERVE/RELEASE. This is not an error. 3473 */ 3474 if (error == EINVAL) { 3475 error = 0; 3476 } 3477 3478 return (error); 3479 } 3480 3481 static int 3482 saloadunload(struct cam_periph *periph, int load) 3483 { 3484 union ccb *ccb; 3485 struct sa_softc *softc; 3486 int error; 3487 3488 softc = (struct sa_softc *)periph->softc; 3489 3490 ccb = cam_periph_getccb(periph, 1); 3491 3492 /* It is safe to retry this operation */ 3493 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3494 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3495 3496 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3497 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3498 softc->dsreg = MTIO_DSREG_REST; 3499 xpt_release_ccb(ccb); 3500 3501 if (error || load == 0) 3502 softc->fileno = softc->blkno = (daddr_t) -1; 3503 else if (error == 0) 3504 softc->fileno = softc->blkno = (daddr_t) 0; 3505 return (error); 3506 } 3507 3508 static int 3509 saerase(struct cam_periph *periph, int longerase) 3510 { 3511 3512 union ccb *ccb; 3513 struct sa_softc *softc; 3514 int error; 3515 3516 softc = (struct sa_softc *)periph->softc; 3517 if (softc->open_rdonly) 3518 return (EBADF); 3519 3520 ccb = cam_periph_getccb(periph, 1); 3521 3522 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3523 SSD_FULL_SIZE, ERASE_TIMEOUT); 3524 3525 softc->dsreg = MTIO_DSREG_ZER; 3526 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3527 softc->dsreg = MTIO_DSREG_REST; 3528 3529 xpt_release_ccb(ccb); 3530 return (error); 3531 } 3532 3533 #endif /* _KERNEL */ 3534 3535 /* 3536 * Read tape block limits command. 3537 */ 3538 void 3539 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3540 void (*cbfcnp)(struct cam_periph *, union ccb *), 3541 u_int8_t tag_action, 3542 struct scsi_read_block_limits_data *rlimit_buf, 3543 u_int8_t sense_len, u_int32_t timeout) 3544 { 3545 struct scsi_read_block_limits *scsi_cmd; 3546 3547 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3548 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3549 sizeof(*scsi_cmd), timeout); 3550 3551 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3552 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3553 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3554 } 3555 3556 void 3557 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3558 void (*cbfcnp)(struct cam_periph *, union ccb *), 3559 u_int8_t tag_action, int readop, int sli, 3560 int fixed, u_int32_t length, u_int8_t *data_ptr, 3561 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3562 { 3563 struct scsi_sa_rw *scsi_cmd; 3564 int read; 3565 3566 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 3567 3568 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3569 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 3570 scsi_cmd->sli_fixed = 0; 3571 if (sli && read) 3572 scsi_cmd->sli_fixed |= SAR_SLI; 3573 if (fixed) 3574 scsi_cmd->sli_fixed |= SARW_FIXED; 3575 scsi_ulto3b(length, scsi_cmd->length); 3576 scsi_cmd->control = 0; 3577 3578 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 3579 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 3580 tag_action, data_ptr, dxfer_len, sense_len, 3581 sizeof(*scsi_cmd), timeout); 3582 } 3583 3584 void 3585 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3586 void (*cbfcnp)(struct cam_periph *, union ccb *), 3587 u_int8_t tag_action, int immediate, int eot, 3588 int reten, int load, u_int8_t sense_len, 3589 u_int32_t timeout) 3590 { 3591 struct scsi_load_unload *scsi_cmd; 3592 3593 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3594 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3595 scsi_cmd->opcode = LOAD_UNLOAD; 3596 if (immediate) 3597 scsi_cmd->immediate = SLU_IMMED; 3598 if (eot) 3599 scsi_cmd->eot_reten_load |= SLU_EOT; 3600 if (reten) 3601 scsi_cmd->eot_reten_load |= SLU_RETEN; 3602 if (load) 3603 scsi_cmd->eot_reten_load |= SLU_LOAD; 3604 3605 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3606 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3607 } 3608 3609 void 3610 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3611 void (*cbfcnp)(struct cam_periph *, union ccb *), 3612 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3613 u_int32_t timeout) 3614 { 3615 struct scsi_rewind *scsi_cmd; 3616 3617 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3618 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3619 scsi_cmd->opcode = REWIND; 3620 if (immediate) 3621 scsi_cmd->immediate = SREW_IMMED; 3622 3623 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3624 0, sense_len, sizeof(*scsi_cmd), timeout); 3625 } 3626 3627 void 3628 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3629 void (*cbfcnp)(struct cam_periph *, union ccb *), 3630 u_int8_t tag_action, scsi_space_code code, 3631 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3632 { 3633 struct scsi_space *scsi_cmd; 3634 3635 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3636 scsi_cmd->opcode = SPACE; 3637 scsi_cmd->code = code; 3638 scsi_ulto3b(count, scsi_cmd->count); 3639 scsi_cmd->control = 0; 3640 3641 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3642 0, sense_len, sizeof(*scsi_cmd), timeout); 3643 } 3644 3645 void 3646 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3647 void (*cbfcnp)(struct cam_periph *, union ccb *), 3648 u_int8_t tag_action, int immediate, int setmark, 3649 u_int32_t num_marks, u_int8_t sense_len, 3650 u_int32_t timeout) 3651 { 3652 struct scsi_write_filemarks *scsi_cmd; 3653 3654 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3655 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3656 scsi_cmd->opcode = WRITE_FILEMARKS; 3657 if (immediate) 3658 scsi_cmd->byte2 |= SWFMRK_IMMED; 3659 if (setmark) 3660 scsi_cmd->byte2 |= SWFMRK_WSMK; 3661 3662 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3663 3664 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3665 0, sense_len, sizeof(*scsi_cmd), timeout); 3666 } 3667 3668 /* 3669 * The reserve and release unit commands differ only by their opcodes. 3670 */ 3671 void 3672 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3673 void (*cbfcnp)(struct cam_periph *, union ccb *), 3674 u_int8_t tag_action, int third_party, 3675 int third_party_id, u_int8_t sense_len, 3676 u_int32_t timeout, int reserve) 3677 { 3678 struct scsi_reserve_release_unit *scsi_cmd; 3679 3680 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3681 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3682 3683 if (reserve) 3684 scsi_cmd->opcode = RESERVE_UNIT; 3685 else 3686 scsi_cmd->opcode = RELEASE_UNIT; 3687 3688 if (third_party) { 3689 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3690 scsi_cmd->lun_thirdparty |= 3691 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3692 } 3693 3694 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3695 0, sense_len, sizeof(*scsi_cmd), timeout); 3696 } 3697 3698 void 3699 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3700 void (*cbfcnp)(struct cam_periph *, union ccb *), 3701 u_int8_t tag_action, int immediate, int long_erase, 3702 u_int8_t sense_len, u_int32_t timeout) 3703 { 3704 struct scsi_erase *scsi_cmd; 3705 3706 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3707 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3708 3709 scsi_cmd->opcode = ERASE; 3710 3711 if (immediate) 3712 scsi_cmd->lun_imm_long |= SE_IMMED; 3713 3714 if (long_erase) 3715 scsi_cmd->lun_imm_long |= SE_LONG; 3716 3717 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3718 0, sense_len, sizeof(*scsi_cmd), timeout); 3719 } 3720 3721 /* 3722 * Read Tape Position command. 3723 */ 3724 void 3725 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3726 void (*cbfcnp)(struct cam_periph *, union ccb *), 3727 u_int8_t tag_action, int hardsoft, 3728 struct scsi_tape_position_data *sbp, 3729 u_int8_t sense_len, u_int32_t timeout) 3730 { 3731 struct scsi_tape_read_position *scmd; 3732 3733 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3734 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3735 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3736 bzero(scmd, sizeof(*scmd)); 3737 scmd->opcode = READ_POSITION; 3738 scmd->byte1 = hardsoft; 3739 } 3740 3741 /* 3742 * Set Tape Position command. 3743 */ 3744 void 3745 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3746 void (*cbfcnp)(struct cam_periph *, union ccb *), 3747 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3748 u_int8_t sense_len, u_int32_t timeout) 3749 { 3750 struct scsi_tape_locate *scmd; 3751 3752 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3753 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3754 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3755 bzero(scmd, sizeof(*scmd)); 3756 scmd->opcode = LOCATE; 3757 if (hardsoft) 3758 scmd->byte1 |= SA_SPOS_BT; 3759 scsi_ulto4b(blkno, scmd->blkaddr); 3760 } 3761