1 /*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1999, 2000 Matthew Jacob 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #ifdef _KERNEL 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #endif 38 #include <sys/types.h> 39 #include <sys/time.h> 40 #include <sys/bio.h> 41 #include <sys/limits.h> 42 #include <sys/malloc.h> 43 #include <sys/mtio.h> 44 #ifdef _KERNEL 45 #include <sys/conf.h> 46 #include <sys/sysctl.h> 47 #include <sys/taskqueue.h> 48 #endif 49 #include <sys/fcntl.h> 50 #include <sys/devicestat.h> 51 52 #ifndef _KERNEL 53 #include <stdio.h> 54 #include <string.h> 55 #endif 56 57 #include <cam/cam.h> 58 #include <cam/cam_ccb.h> 59 #include <cam/cam_periph.h> 60 #include <cam/cam_xpt_periph.h> 61 #include <cam/cam_debug.h> 62 63 #include <cam/scsi/scsi_all.h> 64 #include <cam/scsi/scsi_message.h> 65 #include <cam/scsi/scsi_sa.h> 66 67 #ifdef _KERNEL 68 69 #include <opt_sa.h> 70 71 #ifndef SA_IO_TIMEOUT 72 #define SA_IO_TIMEOUT 4 73 #endif 74 #ifndef SA_SPACE_TIMEOUT 75 #define SA_SPACE_TIMEOUT 1 * 60 76 #endif 77 #ifndef SA_REWIND_TIMEOUT 78 #define SA_REWIND_TIMEOUT 2 * 60 79 #endif 80 #ifndef SA_ERASE_TIMEOUT 81 #define SA_ERASE_TIMEOUT 4 * 60 82 #endif 83 84 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 85 86 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 87 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 88 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 89 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 90 91 /* 92 * Additional options that can be set for config: SA_1FM_AT_EOT 93 */ 94 95 #ifndef UNUSED_PARAMETER 96 #define UNUSED_PARAMETER(x) x = x 97 #endif 98 99 #define QFRLS(ccb) \ 100 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 101 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 102 103 /* 104 * Driver states 105 */ 106 107 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 108 109 typedef enum { 110 SA_STATE_NORMAL, SA_STATE_ABNORMAL 111 } sa_state; 112 113 #define ccb_pflags ppriv_field0 114 #define ccb_bp ppriv_ptr1 115 116 #define SA_CCB_BUFFER_IO 0x0 117 #define SA_CCB_WAITING 0x1 118 #define SA_CCB_TYPEMASK 0x1 119 #define SA_POSITION_UPDATED 0x2 120 121 #define Set_CCB_Type(x, type) \ 122 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 123 x->ccb_h.ccb_pflags |= type 124 125 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 126 127 128 129 typedef enum { 130 SA_FLAG_OPEN = 0x0001, 131 SA_FLAG_FIXED = 0x0002, 132 SA_FLAG_TAPE_LOCKED = 0x0004, 133 SA_FLAG_TAPE_MOUNTED = 0x0008, 134 SA_FLAG_TAPE_WP = 0x0010, 135 SA_FLAG_TAPE_WRITTEN = 0x0020, 136 SA_FLAG_EOM_PENDING = 0x0040, 137 SA_FLAG_EIO_PENDING = 0x0080, 138 SA_FLAG_EOF_PENDING = 0x0100, 139 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 140 SA_FLAG_EOF_PENDING), 141 SA_FLAG_INVALID = 0x0200, 142 SA_FLAG_COMP_ENABLED = 0x0400, 143 SA_FLAG_COMP_SUPP = 0x0800, 144 SA_FLAG_COMP_UNSUPP = 0x1000, 145 SA_FLAG_TAPE_FROZEN = 0x2000 146 } sa_flags; 147 148 typedef enum { 149 SA_MODE_REWIND = 0x00, 150 SA_MODE_NOREWIND = 0x01, 151 SA_MODE_OFFLINE = 0x02 152 } sa_mode; 153 154 typedef enum { 155 SA_PARAM_NONE = 0x00, 156 SA_PARAM_BLOCKSIZE = 0x01, 157 SA_PARAM_DENSITY = 0x02, 158 SA_PARAM_COMPRESSION = 0x04, 159 SA_PARAM_BUFF_MODE = 0x08, 160 SA_PARAM_NUMBLOCKS = 0x10, 161 SA_PARAM_WP = 0x20, 162 SA_PARAM_SPEED = 0x40, 163 SA_PARAM_ALL = 0x7f 164 } sa_params; 165 166 typedef enum { 167 SA_QUIRK_NONE = 0x00, 168 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 169 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 170 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 171 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 172 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 173 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 174 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 175 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 176 } sa_quirks; 177 178 #define SA_QUIRK_BIT_STRING \ 179 "\020" \ 180 "\001NOCOMP" \ 181 "\002FIXED" \ 182 "\003VARIABLE" \ 183 "\0042FM" \ 184 "\0051FM" \ 185 "\006NODREAD" \ 186 "\007NO_MODESEL" \ 187 "\010NO_CPAGE" 188 189 #define SAMODE(z) (dev2unit(z) & 0x3) 190 #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) 191 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 192 193 #define SA_NOT_CTLDEV 0 194 #define SA_CTLDEV 1 195 196 #define SA_ATYPE_R 0 197 #define SA_ATYPE_NR 1 198 #define SA_ATYPE_ER 2 199 200 #define SAMINOR(ctl, mode, access) \ 201 ((ctl << 4) | (mode << 2) | (access & 0x3)) 202 203 #define SA_NUM_MODES 4 204 struct sa_devs { 205 struct cdev *ctl_dev; 206 struct sa_mode_devs { 207 struct cdev *r_dev; 208 struct cdev *nr_dev; 209 struct cdev *er_dev; 210 } mode_devs[SA_NUM_MODES]; 211 }; 212 213 struct sa_softc { 214 sa_state state; 215 sa_flags flags; 216 sa_quirks quirks; 217 u_int si_flags; 218 struct bio_queue_head bio_queue; 219 int queue_count; 220 struct devstat *device_stats; 221 struct sa_devs devs; 222 int blk_gran; 223 int blk_mask; 224 int blk_shift; 225 u_int32_t max_blk; 226 u_int32_t min_blk; 227 u_int32_t maxio; 228 u_int32_t cpi_maxio; 229 int allow_io_split; 230 u_int32_t comp_algorithm; 231 u_int32_t saved_comp_algorithm; 232 u_int32_t media_blksize; 233 u_int32_t last_media_blksize; 234 u_int32_t media_numblks; 235 u_int8_t media_density; 236 u_int8_t speed; 237 u_int8_t scsi_rev; 238 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 239 int buffer_mode; 240 int filemarks; 241 union ccb saved_ccb; 242 int last_resid_was_io; 243 244 /* 245 * Relative to BOT Location. 246 */ 247 daddr_t fileno; 248 daddr_t blkno; 249 250 /* 251 * Latched Error Info 252 */ 253 struct { 254 struct scsi_sense_data _last_io_sense; 255 u_int64_t _last_io_resid; 256 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 257 struct scsi_sense_data _last_ctl_sense; 258 u_int64_t _last_ctl_resid; 259 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 260 #define last_io_sense errinfo._last_io_sense 261 #define last_io_resid errinfo._last_io_resid 262 #define last_io_cdb errinfo._last_io_cdb 263 #define last_ctl_sense errinfo._last_ctl_sense 264 #define last_ctl_resid errinfo._last_ctl_resid 265 #define last_ctl_cdb errinfo._last_ctl_cdb 266 } errinfo; 267 /* 268 * Misc other flags/state 269 */ 270 u_int32_t 271 : 29, 272 open_rdonly : 1, /* open read-only */ 273 open_pending_mount : 1, /* open pending mount */ 274 ctrl_mode : 1; /* control device open */ 275 276 struct task sysctl_task; 277 struct sysctl_ctx_list sysctl_ctx; 278 struct sysctl_oid *sysctl_tree; 279 }; 280 281 struct sa_quirk_entry { 282 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 283 sa_quirks quirks; /* specific quirk type */ 284 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 285 }; 286 287 static struct sa_quirk_entry sa_quirk_table[] = 288 { 289 { 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 291 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 292 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 297 }, 298 { 299 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 300 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 301 }, 302 { 303 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 304 "Python*", "*"}, SA_QUIRK_NODREAD, 0 305 }, 306 { 307 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 308 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 309 }, 310 { 311 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 312 "VIPER 2525 25462", "-011"}, 313 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 314 }, 315 { 316 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 317 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 318 }, 319 #if 0 320 { 321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 322 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 323 }, 324 #endif 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 327 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 331 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 332 }, 333 { 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 335 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 336 }, 337 { 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 339 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 343 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 347 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 348 }, 349 { /* jreynold@primenet.com */ 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 351 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 352 }, 353 { /* mike@sentex.net */ 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 355 "STT20000*", "*"}, SA_QUIRK_1FM, 0 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 359 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 363 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 364 }, 365 { 366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 367 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 368 }, 369 { 370 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 371 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 372 }, 373 { 374 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 375 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 376 }, 377 { 378 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 379 " SLR*", "*"}, SA_QUIRK_1FM, 0 380 }, 381 { 382 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 383 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 384 }, 385 { 386 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 387 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 388 } 389 }; 390 391 static d_open_t saopen; 392 static d_close_t saclose; 393 static d_strategy_t sastrategy; 394 static d_ioctl_t saioctl; 395 static periph_init_t sainit; 396 static periph_ctor_t saregister; 397 static periph_oninv_t saoninvalidate; 398 static periph_dtor_t sacleanup; 399 static periph_start_t sastart; 400 static void saasync(void *callback_arg, u_int32_t code, 401 struct cam_path *path, void *arg); 402 static void sadone(struct cam_periph *periph, 403 union ccb *start_ccb); 404 static int saerror(union ccb *ccb, u_int32_t cam_flags, 405 u_int32_t sense_flags); 406 static int samarkswanted(struct cam_periph *); 407 static int sacheckeod(struct cam_periph *periph); 408 static int sagetparams(struct cam_periph *periph, 409 sa_params params_to_get, 410 u_int32_t *blocksize, u_int8_t *density, 411 u_int32_t *numblocks, int *buff_mode, 412 u_int8_t *write_protect, u_int8_t *speed, 413 int *comp_supported, int *comp_enabled, 414 u_int32_t *comp_algorithm, 415 sa_comp_t *comp_page); 416 static int sasetparams(struct cam_periph *periph, 417 sa_params params_to_set, 418 u_int32_t blocksize, u_int8_t density, 419 u_int32_t comp_algorithm, 420 u_int32_t sense_flags); 421 static void saprevent(struct cam_periph *periph, int action); 422 static int sarewind(struct cam_periph *periph); 423 static int saspace(struct cam_periph *periph, int count, 424 scsi_space_code code); 425 static int samount(struct cam_periph *, int, struct cdev *); 426 static int saretension(struct cam_periph *periph); 427 static int sareservereleaseunit(struct cam_periph *periph, 428 int reserve); 429 static int saloadunload(struct cam_periph *periph, int load); 430 static int saerase(struct cam_periph *periph, int longerase); 431 static int sawritefilemarks(struct cam_periph *periph, 432 int nmarks, int setmarks); 433 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 434 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 435 436 437 #ifndef SA_DEFAULT_IO_SPLIT 438 #define SA_DEFAULT_IO_SPLIT 0 439 #endif 440 441 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 442 443 /* 444 * Tunable to allow the user to set a global allow_io_split value. Note 445 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 446 * is bad behavior, because it hides the true tape block size from the 447 * application. 448 */ 449 TUNABLE_INT("kern.cam.sa.allow_io_split", &sa_allow_io_split); 450 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 451 "CAM Sequential Access Tape Driver"); 452 453 static struct periph_driver sadriver = 454 { 455 sainit, "sa", 456 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 457 }; 458 459 PERIPHDRIVER_DECLARE(sa, sadriver); 460 461 /* For 2.2-stable support */ 462 #ifndef D_TAPE 463 #define D_TAPE 0 464 #endif 465 466 467 static struct cdevsw sa_cdevsw = { 468 .d_version = D_VERSION, 469 .d_open = saopen, 470 .d_close = saclose, 471 .d_read = physread, 472 .d_write = physwrite, 473 .d_ioctl = saioctl, 474 .d_strategy = sastrategy, 475 .d_name = "sa", 476 .d_flags = D_TAPE, 477 }; 478 479 static int 480 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 481 { 482 struct cam_periph *periph; 483 struct sa_softc *softc; 484 int error; 485 486 periph = (struct cam_periph *)dev->si_drv1; 487 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 488 return (ENXIO); 489 } 490 491 cam_periph_lock(periph); 492 493 softc = (struct sa_softc *)periph->softc; 494 495 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 496 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 497 498 if (SA_IS_CTRL(dev)) { 499 softc->ctrl_mode = 1; 500 cam_periph_unlock(periph); 501 return (0); 502 } 503 504 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 505 cam_periph_unlock(periph); 506 cam_periph_release(periph); 507 return (error); 508 } 509 510 if (softc->flags & SA_FLAG_OPEN) { 511 error = EBUSY; 512 } else if (softc->flags & SA_FLAG_INVALID) { 513 error = ENXIO; 514 } else { 515 /* 516 * Preserve whether this is a read_only open. 517 */ 518 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 519 520 /* 521 * The function samount ensures media is loaded and ready. 522 * It also does a device RESERVE if the tape isn't yet mounted. 523 * 524 * If the mount fails and this was a non-blocking open, 525 * make this a 'open_pending_mount' action. 526 */ 527 error = samount(periph, flags, dev); 528 if (error && (flags & O_NONBLOCK)) { 529 softc->flags |= SA_FLAG_OPEN; 530 softc->open_pending_mount = 1; 531 cam_periph_unhold(periph); 532 cam_periph_unlock(periph); 533 return (0); 534 } 535 } 536 537 if (error) { 538 cam_periph_unhold(periph); 539 cam_periph_unlock(periph); 540 cam_periph_release(periph); 541 return (error); 542 } 543 544 saprevent(periph, PR_PREVENT); 545 softc->flags |= SA_FLAG_OPEN; 546 547 cam_periph_unhold(periph); 548 cam_periph_unlock(periph); 549 return (error); 550 } 551 552 static int 553 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 554 { 555 struct cam_periph *periph; 556 struct sa_softc *softc; 557 int mode, error, writing, tmp; 558 int closedbits = SA_FLAG_OPEN; 559 560 mode = SAMODE(dev); 561 periph = (struct cam_periph *)dev->si_drv1; 562 if (periph == NULL) 563 return (ENXIO); 564 565 cam_periph_lock(periph); 566 567 softc = (struct sa_softc *)periph->softc; 568 569 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 570 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 571 572 573 softc->open_rdonly = 0; 574 if (SA_IS_CTRL(dev)) { 575 softc->ctrl_mode = 0; 576 cam_periph_unlock(periph); 577 cam_periph_release(periph); 578 return (0); 579 } 580 581 if (softc->open_pending_mount) { 582 softc->flags &= ~SA_FLAG_OPEN; 583 softc->open_pending_mount = 0; 584 cam_periph_unlock(periph); 585 cam_periph_release(periph); 586 return (0); 587 } 588 589 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 590 cam_periph_unlock(periph); 591 return (error); 592 } 593 594 /* 595 * Were we writing the tape? 596 */ 597 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 598 599 /* 600 * See whether or not we need to write filemarks. If this 601 * fails, we probably have to assume we've lost tape 602 * position. 603 */ 604 error = sacheckeod(periph); 605 if (error) { 606 xpt_print(periph->path, 607 "failed to write terminating filemark(s)\n"); 608 softc->flags |= SA_FLAG_TAPE_FROZEN; 609 } 610 611 /* 612 * Whatever we end up doing, allow users to eject tapes from here on. 613 */ 614 saprevent(periph, PR_ALLOW); 615 616 /* 617 * Decide how to end... 618 */ 619 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 620 closedbits |= SA_FLAG_TAPE_FROZEN; 621 } else switch (mode) { 622 case SA_MODE_OFFLINE: 623 /* 624 * An 'offline' close is an unconditional release of 625 * frozen && mount conditions, irrespective of whether 626 * these operations succeeded. The reason for this is 627 * to allow at least some kind of programmatic way 628 * around our state getting all fouled up. If somebody 629 * issues an 'offline' command, that will be allowed 630 * to clear state. 631 */ 632 (void) sarewind(periph); 633 (void) saloadunload(periph, FALSE); 634 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 635 break; 636 case SA_MODE_REWIND: 637 /* 638 * If the rewind fails, return an error- if anyone cares, 639 * but not overwriting any previous error. 640 * 641 * We don't clear the notion of mounted here, but we do 642 * clear the notion of frozen if we successfully rewound. 643 */ 644 tmp = sarewind(periph); 645 if (tmp) { 646 if (error != 0) 647 error = tmp; 648 } else { 649 closedbits |= SA_FLAG_TAPE_FROZEN; 650 } 651 break; 652 case SA_MODE_NOREWIND: 653 /* 654 * If we're not rewinding/unloading the tape, find out 655 * whether we need to back up over one of two filemarks 656 * we wrote (if we wrote two filemarks) so that appends 657 * from this point on will be sane. 658 */ 659 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 660 tmp = saspace(periph, -1, SS_FILEMARKS); 661 if (tmp) { 662 xpt_print(periph->path, "unable to backspace " 663 "over one of double filemarks at end of " 664 "tape\n"); 665 xpt_print(periph->path, "it is possible that " 666 "this device needs a SA_QUIRK_1FM quirk set" 667 "for it\n"); 668 softc->flags |= SA_FLAG_TAPE_FROZEN; 669 } 670 } 671 break; 672 default: 673 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 674 /* NOTREACHED */ 675 break; 676 } 677 678 /* 679 * We wish to note here that there are no more filemarks to be written. 680 */ 681 softc->filemarks = 0; 682 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 683 684 /* 685 * And we are no longer open for business. 686 */ 687 softc->flags &= ~closedbits; 688 689 /* 690 * Inform users if tape state if frozen.... 691 */ 692 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 693 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 694 "REWIND or MTEOM command to clear this state.\n"); 695 } 696 697 /* release the device if it is no longer mounted */ 698 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 699 sareservereleaseunit(periph, FALSE); 700 701 cam_periph_unhold(periph); 702 cam_periph_unlock(periph); 703 cam_periph_release(periph); 704 705 return (error); 706 } 707 708 /* 709 * Actually translate the requested transfer into one the physical driver 710 * can understand. The transfer is described by a buf and will include 711 * only one physical transfer. 712 */ 713 static void 714 sastrategy(struct bio *bp) 715 { 716 struct cam_periph *periph; 717 struct sa_softc *softc; 718 719 bp->bio_resid = bp->bio_bcount; 720 if (SA_IS_CTRL(bp->bio_dev)) { 721 biofinish(bp, NULL, EINVAL); 722 return; 723 } 724 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 725 if (periph == NULL) { 726 biofinish(bp, NULL, ENXIO); 727 return; 728 } 729 cam_periph_lock(periph); 730 731 softc = (struct sa_softc *)periph->softc; 732 733 if (softc->flags & SA_FLAG_INVALID) { 734 cam_periph_unlock(periph); 735 biofinish(bp, NULL, ENXIO); 736 return; 737 } 738 739 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 740 cam_periph_unlock(periph); 741 biofinish(bp, NULL, EPERM); 742 return; 743 } 744 745 /* 746 * This should actually never occur as the write(2) 747 * system call traps attempts to write to a read-only 748 * file descriptor. 749 */ 750 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 751 cam_periph_unlock(periph); 752 biofinish(bp, NULL, EBADF); 753 return; 754 } 755 756 if (softc->open_pending_mount) { 757 int error = samount(periph, 0, bp->bio_dev); 758 if (error) { 759 cam_periph_unlock(periph); 760 biofinish(bp, NULL, ENXIO); 761 return; 762 } 763 saprevent(periph, PR_PREVENT); 764 softc->open_pending_mount = 0; 765 } 766 767 768 /* 769 * If it's a null transfer, return immediately 770 */ 771 if (bp->bio_bcount == 0) { 772 cam_periph_unlock(periph); 773 biodone(bp); 774 return; 775 } 776 777 /* valid request? */ 778 if (softc->flags & SA_FLAG_FIXED) { 779 /* 780 * Fixed block device. The byte count must 781 * be a multiple of our block size. 782 */ 783 if (((softc->blk_mask != ~0) && 784 ((bp->bio_bcount & softc->blk_mask) != 0)) || 785 ((softc->blk_mask == ~0) && 786 ((bp->bio_bcount % softc->min_blk) != 0))) { 787 xpt_print(periph->path, "Invalid request. Fixed block " 788 "device requests must be a multiple of %d bytes\n", 789 softc->min_blk); 790 cam_periph_unlock(periph); 791 biofinish(bp, NULL, EINVAL); 792 return; 793 } 794 } else if ((bp->bio_bcount > softc->max_blk) || 795 (bp->bio_bcount < softc->min_blk) || 796 (bp->bio_bcount & softc->blk_mask) != 0) { 797 798 xpt_print_path(periph->path); 799 printf("Invalid request. Variable block " 800 "device requests must be "); 801 if (softc->blk_mask != 0) { 802 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 803 } 804 printf("between %d and %d bytes\n", softc->min_blk, 805 softc->max_blk); 806 cam_periph_unlock(periph); 807 biofinish(bp, NULL, EINVAL); 808 return; 809 } 810 811 /* 812 * Place it at the end of the queue. 813 */ 814 bioq_insert_tail(&softc->bio_queue, bp); 815 softc->queue_count++; 816 #if 0 817 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 818 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 819 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 820 (bp->bio_cmd == BIO_READ)? "read" : "write")); 821 #endif 822 if (softc->queue_count > 1) { 823 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 824 ("sastrategy: queue count now %d\n", softc->queue_count)); 825 } 826 827 /* 828 * Schedule ourselves for performing the work. 829 */ 830 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 831 cam_periph_unlock(periph); 832 833 return; 834 } 835 836 837 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 838 if (softc->open_pending_mount) { \ 839 error = samount(periph, 0, dev); \ 840 if (error) { \ 841 break; \ 842 } \ 843 saprevent(periph, PR_PREVENT); \ 844 softc->open_pending_mount = 0; \ 845 } 846 847 static int 848 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 849 { 850 struct cam_periph *periph; 851 struct sa_softc *softc; 852 scsi_space_code spaceop; 853 int didlockperiph = 0; 854 int mode; 855 int error = 0; 856 857 mode = SAMODE(dev); 858 error = 0; /* shut up gcc */ 859 spaceop = 0; /* shut up gcc */ 860 861 periph = (struct cam_periph *)dev->si_drv1; 862 if (periph == NULL) 863 return (ENXIO); 864 865 cam_periph_lock(periph); 866 softc = (struct sa_softc *)periph->softc; 867 868 /* 869 * Check for control mode accesses. We allow MTIOCGET and 870 * MTIOCERRSTAT (but need to be the only one open in order 871 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 872 * and MTCOMP (but need to be the only one accessing this 873 * device to run those). 874 */ 875 876 if (SA_IS_CTRL(dev)) { 877 switch (cmd) { 878 case MTIOCGETEOTMODEL: 879 case MTIOCGET: 880 break; 881 case MTIOCERRSTAT: 882 /* 883 * If the periph isn't already locked, lock it 884 * so our MTIOCERRSTAT can reset latched error stats. 885 * 886 * If the periph is already locked, skip it because 887 * we're just getting status and it'll be up to the 888 * other thread that has this device open to do 889 * an MTIOCERRSTAT that would clear latched status. 890 */ 891 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 892 error = cam_periph_hold(periph, PRIBIO|PCATCH); 893 if (error != 0) { 894 cam_periph_unlock(periph); 895 return (error); 896 } 897 didlockperiph = 1; 898 } 899 break; 900 901 case MTIOCTOP: 902 { 903 struct mtop *mt = (struct mtop *) arg; 904 905 /* 906 * Check to make sure it's an OP we can perform 907 * with no media inserted. 908 */ 909 switch (mt->mt_op) { 910 case MTSETBSIZ: 911 case MTSETDNSTY: 912 case MTCOMP: 913 mt = NULL; 914 /* FALLTHROUGH */ 915 default: 916 break; 917 } 918 if (mt != NULL) { 919 break; 920 } 921 /* FALLTHROUGH */ 922 } 923 case MTIOCSETEOTMODEL: 924 /* 925 * We need to acquire the peripheral here rather 926 * than at open time because we are sharing writable 927 * access to data structures. 928 */ 929 error = cam_periph_hold(periph, PRIBIO|PCATCH); 930 if (error != 0) { 931 cam_periph_unlock(periph); 932 return (error); 933 } 934 didlockperiph = 1; 935 break; 936 937 default: 938 cam_periph_unlock(periph); 939 return (EINVAL); 940 } 941 } 942 943 /* 944 * Find the device that the user is talking about 945 */ 946 switch (cmd) { 947 case MTIOCGET: 948 { 949 struct mtget *g = (struct mtget *)arg; 950 951 /* 952 * If this isn't the control mode device, actually go out 953 * and ask the drive again what it's set to. 954 */ 955 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 956 u_int8_t write_protect; 957 int comp_enabled, comp_supported; 958 error = sagetparams(periph, SA_PARAM_ALL, 959 &softc->media_blksize, &softc->media_density, 960 &softc->media_numblks, &softc->buffer_mode, 961 &write_protect, &softc->speed, &comp_supported, 962 &comp_enabled, &softc->comp_algorithm, NULL); 963 if (error) 964 break; 965 if (write_protect) 966 softc->flags |= SA_FLAG_TAPE_WP; 967 else 968 softc->flags &= ~SA_FLAG_TAPE_WP; 969 softc->flags &= ~(SA_FLAG_COMP_SUPP| 970 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 971 if (comp_supported) { 972 if (softc->saved_comp_algorithm == 0) 973 softc->saved_comp_algorithm = 974 softc->comp_algorithm; 975 softc->flags |= SA_FLAG_COMP_SUPP; 976 if (comp_enabled) 977 softc->flags |= SA_FLAG_COMP_ENABLED; 978 } else 979 softc->flags |= SA_FLAG_COMP_UNSUPP; 980 } 981 bzero(g, sizeof(struct mtget)); 982 g->mt_type = MT_ISAR; 983 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 984 g->mt_comp = MT_COMP_UNSUPP; 985 g->mt_comp0 = MT_COMP_UNSUPP; 986 g->mt_comp1 = MT_COMP_UNSUPP; 987 g->mt_comp2 = MT_COMP_UNSUPP; 988 g->mt_comp3 = MT_COMP_UNSUPP; 989 } else { 990 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 991 g->mt_comp = MT_COMP_DISABLED; 992 } else { 993 g->mt_comp = softc->comp_algorithm; 994 } 995 g->mt_comp0 = softc->comp_algorithm; 996 g->mt_comp1 = softc->comp_algorithm; 997 g->mt_comp2 = softc->comp_algorithm; 998 g->mt_comp3 = softc->comp_algorithm; 999 } 1000 g->mt_density = softc->media_density; 1001 g->mt_density0 = softc->media_density; 1002 g->mt_density1 = softc->media_density; 1003 g->mt_density2 = softc->media_density; 1004 g->mt_density3 = softc->media_density; 1005 g->mt_blksiz = softc->media_blksize; 1006 g->mt_blksiz0 = softc->media_blksize; 1007 g->mt_blksiz1 = softc->media_blksize; 1008 g->mt_blksiz2 = softc->media_blksize; 1009 g->mt_blksiz3 = softc->media_blksize; 1010 g->mt_fileno = softc->fileno; 1011 g->mt_blkno = softc->blkno; 1012 g->mt_dsreg = (short) softc->dsreg; 1013 /* 1014 * Yes, we know that this is likely to overflow 1015 */ 1016 if (softc->last_resid_was_io) { 1017 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1018 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1019 softc->last_io_resid = 0; 1020 } 1021 } 1022 } else { 1023 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1024 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1025 softc->last_ctl_resid = 0; 1026 } 1027 } 1028 } 1029 error = 0; 1030 break; 1031 } 1032 case MTIOCERRSTAT: 1033 { 1034 struct scsi_tape_errors *sep = 1035 &((union mterrstat *)arg)->scsi_errstat; 1036 1037 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1038 ("saioctl: MTIOCERRSTAT\n")); 1039 1040 bzero(sep, sizeof(*sep)); 1041 sep->io_resid = softc->last_io_resid; 1042 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1043 sizeof (sep->io_sense)); 1044 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1045 sizeof (sep->io_cdb)); 1046 sep->ctl_resid = softc->last_ctl_resid; 1047 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1048 sizeof (sep->ctl_sense)); 1049 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1050 sizeof (sep->ctl_cdb)); 1051 1052 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1053 didlockperiph) 1054 bzero((caddr_t) &softc->errinfo, 1055 sizeof (softc->errinfo)); 1056 error = 0; 1057 break; 1058 } 1059 case MTIOCTOP: 1060 { 1061 struct mtop *mt; 1062 int count; 1063 1064 PENDING_MOUNT_CHECK(softc, periph, dev); 1065 1066 mt = (struct mtop *)arg; 1067 1068 1069 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1070 ("saioctl: op=0x%x count=0x%x\n", 1071 mt->mt_op, mt->mt_count)); 1072 1073 count = mt->mt_count; 1074 switch (mt->mt_op) { 1075 case MTWEOF: /* write an end-of-file marker */ 1076 /* 1077 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1078 * flag because by keeping track of filemarks 1079 * we have last written we know ehether or not 1080 * we need to write more when we close the device. 1081 */ 1082 error = sawritefilemarks(periph, count, FALSE); 1083 break; 1084 case MTWSS: /* write a setmark */ 1085 error = sawritefilemarks(periph, count, TRUE); 1086 break; 1087 case MTBSR: /* backward space record */ 1088 case MTFSR: /* forward space record */ 1089 case MTBSF: /* backward space file */ 1090 case MTFSF: /* forward space file */ 1091 case MTBSS: /* backward space setmark */ 1092 case MTFSS: /* forward space setmark */ 1093 case MTEOD: /* space to end of recorded medium */ 1094 { 1095 int nmarks; 1096 1097 spaceop = SS_FILEMARKS; 1098 nmarks = softc->filemarks; 1099 error = sacheckeod(periph); 1100 if (error) { 1101 xpt_print(periph->path, 1102 "EOD check prior to spacing failed\n"); 1103 softc->flags |= SA_FLAG_EIO_PENDING; 1104 break; 1105 } 1106 nmarks -= softc->filemarks; 1107 switch(mt->mt_op) { 1108 case MTBSR: 1109 count = -count; 1110 /* FALLTHROUGH */ 1111 case MTFSR: 1112 spaceop = SS_BLOCKS; 1113 break; 1114 case MTBSF: 1115 count = -count; 1116 /* FALLTHROUGH */ 1117 case MTFSF: 1118 break; 1119 case MTBSS: 1120 count = -count; 1121 /* FALLTHROUGH */ 1122 case MTFSS: 1123 spaceop = SS_SETMARKS; 1124 break; 1125 case MTEOD: 1126 spaceop = SS_EOD; 1127 count = 0; 1128 nmarks = 0; 1129 break; 1130 default: 1131 error = EINVAL; 1132 break; 1133 } 1134 if (error) 1135 break; 1136 1137 nmarks = softc->filemarks; 1138 /* 1139 * XXX: Why are we checking again? 1140 */ 1141 error = sacheckeod(periph); 1142 if (error) 1143 break; 1144 nmarks -= softc->filemarks; 1145 error = saspace(periph, count - nmarks, spaceop); 1146 /* 1147 * At this point, clear that we've written the tape 1148 * and that we've written any filemarks. We really 1149 * don't know what the applications wishes to do next- 1150 * the sacheckeod's will make sure we terminated the 1151 * tape correctly if we'd been writing, but the next 1152 * action the user application takes will set again 1153 * whether we need to write filemarks. 1154 */ 1155 softc->flags &= 1156 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1157 softc->filemarks = 0; 1158 break; 1159 } 1160 case MTREW: /* rewind */ 1161 PENDING_MOUNT_CHECK(softc, periph, dev); 1162 (void) sacheckeod(periph); 1163 error = sarewind(periph); 1164 /* see above */ 1165 softc->flags &= 1166 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1167 softc->flags &= ~SA_FLAG_ERR_PENDING; 1168 softc->filemarks = 0; 1169 break; 1170 case MTERASE: /* erase */ 1171 PENDING_MOUNT_CHECK(softc, periph, dev); 1172 error = saerase(periph, count); 1173 softc->flags &= 1174 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1175 softc->flags &= ~SA_FLAG_ERR_PENDING; 1176 break; 1177 case MTRETENS: /* re-tension tape */ 1178 PENDING_MOUNT_CHECK(softc, periph, dev); 1179 error = saretension(periph); 1180 softc->flags &= 1181 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1182 softc->flags &= ~SA_FLAG_ERR_PENDING; 1183 break; 1184 case MTOFFL: /* rewind and put the drive offline */ 1185 1186 PENDING_MOUNT_CHECK(softc, periph, dev); 1187 1188 (void) sacheckeod(periph); 1189 /* see above */ 1190 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1191 softc->filemarks = 0; 1192 1193 error = sarewind(periph); 1194 /* clear the frozen flag anyway */ 1195 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1196 1197 /* 1198 * Be sure to allow media removal before ejecting. 1199 */ 1200 1201 saprevent(periph, PR_ALLOW); 1202 if (error == 0) { 1203 error = saloadunload(periph, FALSE); 1204 if (error == 0) { 1205 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1206 } 1207 } 1208 break; 1209 1210 case MTNOP: /* no operation, sets status only */ 1211 case MTCACHE: /* enable controller cache */ 1212 case MTNOCACHE: /* disable controller cache */ 1213 error = 0; 1214 break; 1215 1216 case MTSETBSIZ: /* Set block size for device */ 1217 1218 PENDING_MOUNT_CHECK(softc, periph, dev); 1219 1220 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1221 0, 0, 0); 1222 if (error == 0) { 1223 softc->last_media_blksize = 1224 softc->media_blksize; 1225 softc->media_blksize = count; 1226 if (count) { 1227 softc->flags |= SA_FLAG_FIXED; 1228 if (powerof2(count)) { 1229 softc->blk_shift = 1230 ffs(count) - 1; 1231 softc->blk_mask = count - 1; 1232 } else { 1233 softc->blk_mask = ~0; 1234 softc->blk_shift = 0; 1235 } 1236 /* 1237 * Make the user's desire 'persistent'. 1238 */ 1239 softc->quirks &= ~SA_QUIRK_VARIABLE; 1240 softc->quirks |= SA_QUIRK_FIXED; 1241 } else { 1242 softc->flags &= ~SA_FLAG_FIXED; 1243 if (softc->max_blk == 0) { 1244 softc->max_blk = ~0; 1245 } 1246 softc->blk_shift = 0; 1247 if (softc->blk_gran != 0) { 1248 softc->blk_mask = 1249 softc->blk_gran - 1; 1250 } else { 1251 softc->blk_mask = 0; 1252 } 1253 /* 1254 * Make the user's desire 'persistent'. 1255 */ 1256 softc->quirks |= SA_QUIRK_VARIABLE; 1257 softc->quirks &= ~SA_QUIRK_FIXED; 1258 } 1259 } 1260 break; 1261 case MTSETDNSTY: /* Set density for device and mode */ 1262 PENDING_MOUNT_CHECK(softc, periph, dev); 1263 1264 if (count > UCHAR_MAX) { 1265 error = EINVAL; 1266 break; 1267 } else { 1268 error = sasetparams(periph, SA_PARAM_DENSITY, 1269 0, count, 0, 0); 1270 } 1271 break; 1272 case MTCOMP: /* enable compression */ 1273 PENDING_MOUNT_CHECK(softc, periph, dev); 1274 /* 1275 * Some devices don't support compression, and 1276 * don't like it if you ask them for the 1277 * compression page. 1278 */ 1279 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1280 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1281 error = ENODEV; 1282 break; 1283 } 1284 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1285 0, 0, count, SF_NO_PRINT); 1286 break; 1287 default: 1288 error = EINVAL; 1289 } 1290 break; 1291 } 1292 case MTIOCIEOT: 1293 case MTIOCEEOT: 1294 error = 0; 1295 break; 1296 case MTIOCRDSPOS: 1297 PENDING_MOUNT_CHECK(softc, periph, dev); 1298 error = sardpos(periph, 0, (u_int32_t *) arg); 1299 break; 1300 case MTIOCRDHPOS: 1301 PENDING_MOUNT_CHECK(softc, periph, dev); 1302 error = sardpos(periph, 1, (u_int32_t *) arg); 1303 break; 1304 case MTIOCSLOCATE: 1305 PENDING_MOUNT_CHECK(softc, periph, dev); 1306 error = sasetpos(periph, 0, (u_int32_t *) arg); 1307 break; 1308 case MTIOCHLOCATE: 1309 PENDING_MOUNT_CHECK(softc, periph, dev); 1310 error = sasetpos(periph, 1, (u_int32_t *) arg); 1311 break; 1312 case MTIOCGETEOTMODEL: 1313 error = 0; 1314 if (softc->quirks & SA_QUIRK_1FM) 1315 mode = 1; 1316 else 1317 mode = 2; 1318 *((u_int32_t *) arg) = mode; 1319 break; 1320 case MTIOCSETEOTMODEL: 1321 error = 0; 1322 switch (*((u_int32_t *) arg)) { 1323 case 1: 1324 softc->quirks &= ~SA_QUIRK_2FM; 1325 softc->quirks |= SA_QUIRK_1FM; 1326 break; 1327 case 2: 1328 softc->quirks &= ~SA_QUIRK_1FM; 1329 softc->quirks |= SA_QUIRK_2FM; 1330 break; 1331 default: 1332 error = EINVAL; 1333 break; 1334 } 1335 break; 1336 default: 1337 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1338 break; 1339 } 1340 1341 /* 1342 * Check to see if we cleared a frozen state 1343 */ 1344 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1345 switch(cmd) { 1346 case MTIOCRDSPOS: 1347 case MTIOCRDHPOS: 1348 case MTIOCSLOCATE: 1349 case MTIOCHLOCATE: 1350 softc->fileno = (daddr_t) -1; 1351 softc->blkno = (daddr_t) -1; 1352 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1353 xpt_print(periph->path, 1354 "tape state now unfrozen.\n"); 1355 break; 1356 default: 1357 break; 1358 } 1359 } 1360 if (didlockperiph) { 1361 cam_periph_unhold(periph); 1362 } 1363 cam_periph_unlock(periph); 1364 return (error); 1365 } 1366 1367 static void 1368 sainit(void) 1369 { 1370 cam_status status; 1371 1372 /* 1373 * Install a global async callback. 1374 */ 1375 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1376 1377 if (status != CAM_REQ_CMP) { 1378 printf("sa: Failed to attach master async callback " 1379 "due to status 0x%x!\n", status); 1380 } 1381 } 1382 1383 static void 1384 saoninvalidate(struct cam_periph *periph) 1385 { 1386 struct sa_softc *softc; 1387 1388 softc = (struct sa_softc *)periph->softc; 1389 1390 /* 1391 * De-register any async callbacks. 1392 */ 1393 xpt_register_async(0, saasync, periph, periph->path); 1394 1395 softc->flags |= SA_FLAG_INVALID; 1396 1397 /* 1398 * Return all queued I/O with ENXIO. 1399 * XXX Handle any transactions queued to the card 1400 * with XPT_ABORT_CCB. 1401 */ 1402 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1403 softc->queue_count = 0; 1404 1405 xpt_print(periph->path, "lost device\n"); 1406 1407 } 1408 1409 static void 1410 sacleanup(struct cam_periph *periph) 1411 { 1412 struct sa_softc *softc; 1413 int i; 1414 1415 softc = (struct sa_softc *)periph->softc; 1416 1417 xpt_print(periph->path, "removing device entry\n"); 1418 devstat_remove_entry(softc->device_stats); 1419 cam_periph_unlock(periph); 1420 destroy_dev(softc->devs.ctl_dev); 1421 for (i = 0; i < SA_NUM_MODES; i++) { 1422 destroy_dev(softc->devs.mode_devs[i].r_dev); 1423 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1424 destroy_dev(softc->devs.mode_devs[i].er_dev); 1425 } 1426 cam_periph_lock(periph); 1427 free(softc, M_SCSISA); 1428 } 1429 1430 static void 1431 saasync(void *callback_arg, u_int32_t code, 1432 struct cam_path *path, void *arg) 1433 { 1434 struct cam_periph *periph; 1435 1436 periph = (struct cam_periph *)callback_arg; 1437 switch (code) { 1438 case AC_FOUND_DEVICE: 1439 { 1440 struct ccb_getdev *cgd; 1441 cam_status status; 1442 1443 cgd = (struct ccb_getdev *)arg; 1444 if (cgd == NULL) 1445 break; 1446 1447 if (cgd->protocol != PROTO_SCSI) 1448 break; 1449 1450 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1451 break; 1452 1453 /* 1454 * Allocate a peripheral instance for 1455 * this device and start the probe 1456 * process. 1457 */ 1458 status = cam_periph_alloc(saregister, saoninvalidate, 1459 sacleanup, sastart, 1460 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1461 saasync, AC_FOUND_DEVICE, cgd); 1462 1463 if (status != CAM_REQ_CMP 1464 && status != CAM_REQ_INPROG) 1465 printf("saasync: Unable to probe new device " 1466 "due to status 0x%x\n", status); 1467 break; 1468 } 1469 default: 1470 cam_periph_async(periph, code, path, arg); 1471 break; 1472 } 1473 } 1474 1475 static void 1476 sasysctlinit(void *context, int pending) 1477 { 1478 struct cam_periph *periph; 1479 struct sa_softc *softc; 1480 char tmpstr[80], tmpstr2[80]; 1481 1482 periph = (struct cam_periph *)context; 1483 /* 1484 * If the periph is invalid, no need to setup the sysctls. 1485 */ 1486 if (periph->flags & CAM_PERIPH_INVALID) 1487 goto bailout; 1488 1489 softc = (struct sa_softc *)periph->softc; 1490 1491 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 1492 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 1493 1494 sysctl_ctx_init(&softc->sysctl_ctx); 1495 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 1496 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 1497 CTLFLAG_RD, 0, tmpstr); 1498 if (softc->sysctl_tree == NULL) 1499 goto bailout; 1500 1501 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1502 OID_AUTO, "allow_io_split", CTLTYPE_INT | CTLFLAG_RDTUN, 1503 &softc->allow_io_split, 0, "Allow Splitting I/O"); 1504 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1505 OID_AUTO, "maxio", CTLTYPE_INT | CTLFLAG_RD, 1506 &softc->maxio, 0, "Maximum I/O size"); 1507 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 1508 OID_AUTO, "cpi_maxio", CTLTYPE_INT | CTLFLAG_RD, 1509 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 1510 1511 bailout: 1512 /* 1513 * Release the reference that was held when this task was enqueued. 1514 */ 1515 cam_periph_release(periph); 1516 } 1517 1518 static cam_status 1519 saregister(struct cam_periph *periph, void *arg) 1520 { 1521 struct sa_softc *softc; 1522 struct ccb_getdev *cgd; 1523 struct ccb_pathinq cpi; 1524 caddr_t match; 1525 char tmpstr[80]; 1526 int i; 1527 1528 cgd = (struct ccb_getdev *)arg; 1529 if (cgd == NULL) { 1530 printf("saregister: no getdev CCB, can't register device\n"); 1531 return (CAM_REQ_CMP_ERR); 1532 } 1533 1534 softc = (struct sa_softc *) 1535 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1536 if (softc == NULL) { 1537 printf("saregister: Unable to probe new device. " 1538 "Unable to allocate softc\n"); 1539 return (CAM_REQ_CMP_ERR); 1540 } 1541 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1542 softc->state = SA_STATE_NORMAL; 1543 softc->fileno = (daddr_t) -1; 1544 softc->blkno = (daddr_t) -1; 1545 1546 bioq_init(&softc->bio_queue); 1547 periph->softc = softc; 1548 1549 /* 1550 * See if this device has any quirks. 1551 */ 1552 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1553 (caddr_t)sa_quirk_table, 1554 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1555 sizeof(*sa_quirk_table), scsi_inquiry_match); 1556 1557 if (match != NULL) { 1558 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1559 softc->last_media_blksize = 1560 ((struct sa_quirk_entry *)match)->prefblk; 1561 } else 1562 softc->quirks = SA_QUIRK_NONE; 1563 1564 bzero(&cpi, sizeof(cpi)); 1565 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1566 cpi.ccb_h.func_code = XPT_PATH_INQ; 1567 xpt_action((union ccb *)&cpi); 1568 1569 /* 1570 * The SA driver supports a blocksize, but we don't know the 1571 * blocksize until we media is inserted. So, set a flag to 1572 * indicate that the blocksize is unavailable right now. 1573 */ 1574 cam_periph_unlock(periph); 1575 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1576 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1577 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1578 1579 /* 1580 * Load the default value that is either compiled in, or loaded 1581 * in the global kern.cam.sa.allow_io_split tunable. 1582 */ 1583 softc->allow_io_split = sa_allow_io_split; 1584 1585 /* 1586 * Load a per-instance tunable, if it exists. NOTE that this 1587 * tunable WILL GO AWAY in FreeBSD 11.0. 1588 */ 1589 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 1590 periph->unit_number); 1591 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 1592 1593 /* 1594 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 1595 * the smaller of cpi.maxio or MAXPHYS. 1596 */ 1597 if (cpi.maxio == 0) 1598 softc->maxio = DFLTPHYS; 1599 else if (cpi.maxio > MAXPHYS) 1600 softc->maxio = MAXPHYS; 1601 else 1602 softc->maxio = cpi.maxio; 1603 1604 /* 1605 * Record the controller's maximum I/O size so we can report it to 1606 * the user later. 1607 */ 1608 softc->cpi_maxio = cpi.maxio; 1609 1610 /* 1611 * By default we tell physio that we do not want our I/O split. 1612 * The user needs to have a 1:1 mapping between the size of his 1613 * write to a tape character device and the size of the write 1614 * that actually goes down to the drive. 1615 */ 1616 if (softc->allow_io_split == 0) 1617 softc->si_flags = SI_NOSPLIT; 1618 else 1619 softc->si_flags = 0; 1620 1621 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 1622 1623 /* 1624 * If the SIM supports unmapped I/O, let physio know that we can 1625 * handle unmapped buffers. 1626 */ 1627 if (cpi.hba_misc & PIM_UNMAPPED) 1628 softc->si_flags |= SI_UNMAPPED; 1629 1630 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1631 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1632 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1633 softc->devs.ctl_dev->si_drv1 = periph; 1634 softc->devs.ctl_dev->si_iosize_max = softc->maxio; 1635 softc->devs.ctl_dev->si_flags |= softc->si_flags; 1636 1637 for (i = 0; i < SA_NUM_MODES; i++) { 1638 1639 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1640 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1641 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1642 periph->periph_name, periph->unit_number, i); 1643 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1644 softc->devs.mode_devs[i].r_dev->si_iosize_max = softc->maxio; 1645 softc->devs.mode_devs[i].r_dev->si_flags |= softc->si_flags; 1646 1647 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1648 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1649 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1650 periph->periph_name, periph->unit_number, i); 1651 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1652 softc->devs.mode_devs[i].nr_dev->si_iosize_max = softc->maxio; 1653 softc->devs.mode_devs[i].nr_dev->si_flags |= softc->si_flags; 1654 1655 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1656 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1657 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1658 periph->periph_name, periph->unit_number, i); 1659 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1660 softc->devs.mode_devs[i].er_dev->si_iosize_max = softc->maxio; 1661 softc->devs.mode_devs[i].er_dev->si_flags |= softc->si_flags; 1662 1663 /* 1664 * Make the (well known) aliases for the first mode. 1665 */ 1666 if (i == 0) { 1667 struct cdev *alias; 1668 1669 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1670 "%s%d", periph->periph_name, periph->unit_number); 1671 alias->si_drv1 = periph; 1672 alias->si_iosize_max = softc->maxio; 1673 alias->si_flags |= softc->si_flags; 1674 1675 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1676 "n%s%d", periph->periph_name, periph->unit_number); 1677 alias->si_drv1 = periph; 1678 alias->si_iosize_max = softc->maxio; 1679 alias->si_flags |= softc->si_flags; 1680 1681 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1682 "e%s%d", periph->periph_name, periph->unit_number); 1683 alias->si_drv1 = periph; 1684 alias->si_iosize_max = softc->maxio; 1685 alias->si_flags |= softc->si_flags; 1686 } 1687 } 1688 cam_periph_lock(periph); 1689 1690 /* 1691 * Bump the peripheral refcount for the sysctl thread, in case we 1692 * get invalidated before the thread has a chance to run. 1693 */ 1694 cam_periph_acquire(periph); 1695 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 1696 1697 /* 1698 * Add an async callback so that we get 1699 * notified if this device goes away. 1700 */ 1701 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1702 1703 xpt_announce_periph(periph, NULL); 1704 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 1705 1706 return (CAM_REQ_CMP); 1707 } 1708 1709 static void 1710 sastart(struct cam_periph *periph, union ccb *start_ccb) 1711 { 1712 struct sa_softc *softc; 1713 1714 softc = (struct sa_softc *)periph->softc; 1715 1716 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1717 1718 1719 switch (softc->state) { 1720 case SA_STATE_NORMAL: 1721 { 1722 /* Pull a buffer from the queue and get going on it */ 1723 struct bio *bp; 1724 1725 /* 1726 * See if there is a buf with work for us to do.. 1727 */ 1728 bp = bioq_first(&softc->bio_queue); 1729 if (periph->immediate_priority <= periph->pinfo.priority) { 1730 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1731 ("queuing for immediate ccb\n")); 1732 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1733 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1734 periph_links.sle); 1735 periph->immediate_priority = CAM_PRIORITY_NONE; 1736 wakeup(&periph->ccb_list); 1737 } else if (bp == NULL) { 1738 xpt_release_ccb(start_ccb); 1739 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1740 struct bio *done_bp; 1741 again: 1742 softc->queue_count--; 1743 bioq_remove(&softc->bio_queue, bp); 1744 bp->bio_resid = bp->bio_bcount; 1745 done_bp = bp; 1746 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1747 /* 1748 * We now just clear errors in this case 1749 * and let the residual be the notifier. 1750 */ 1751 bp->bio_error = 0; 1752 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1753 /* 1754 * This can only happen if we're reading 1755 * in fixed length mode. In this case, 1756 * we dump the rest of the list the 1757 * same way. 1758 */ 1759 bp->bio_error = 0; 1760 if (bioq_first(&softc->bio_queue) != NULL) { 1761 biodone(done_bp); 1762 goto again; 1763 } 1764 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1765 bp->bio_error = EIO; 1766 bp->bio_flags |= BIO_ERROR; 1767 } 1768 bp = bioq_first(&softc->bio_queue); 1769 /* 1770 * Only if we have no other buffers queued up 1771 * do we clear the pending error flag. 1772 */ 1773 if (bp == NULL) 1774 softc->flags &= ~SA_FLAG_ERR_PENDING; 1775 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1776 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1777 "%d more buffers queued up\n", 1778 (softc->flags & SA_FLAG_ERR_PENDING), 1779 (bp != NULL)? "not " : " ", softc->queue_count)); 1780 xpt_release_ccb(start_ccb); 1781 biodone(done_bp); 1782 } else { 1783 u_int32_t length; 1784 1785 bioq_remove(&softc->bio_queue, bp); 1786 softc->queue_count--; 1787 1788 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1789 if (softc->blk_shift != 0) { 1790 length = 1791 bp->bio_bcount >> softc->blk_shift; 1792 } else if (softc->media_blksize != 0) { 1793 length = bp->bio_bcount / 1794 softc->media_blksize; 1795 } else { 1796 bp->bio_error = EIO; 1797 xpt_print(periph->path, "zero blocksize" 1798 " for FIXED length writes?\n"); 1799 biodone(bp); 1800 break; 1801 } 1802 #if 0 1803 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1804 ("issuing a %d fixed record %s\n", 1805 length, (bp->bio_cmd == BIO_READ)? "read" : 1806 "write")); 1807 #endif 1808 } else { 1809 length = bp->bio_bcount; 1810 #if 0 1811 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1812 ("issuing a %d variable byte %s\n", 1813 length, (bp->bio_cmd == BIO_READ)? "read" : 1814 "write")); 1815 #endif 1816 } 1817 devstat_start_transaction_bio(softc->device_stats, bp); 1818 /* 1819 * Some people have theorized that we should 1820 * suppress illegal length indication if we are 1821 * running in variable block mode so that we don't 1822 * have to request sense every time our requested 1823 * block size is larger than the written block. 1824 * The residual information from the ccb allows 1825 * us to identify this situation anyway. The only 1826 * problem with this is that we will not get 1827 * information about blocks that are larger than 1828 * our read buffer unless we set the block size 1829 * in the mode page to something other than 0. 1830 * 1831 * I believe that this is a non-issue. If user apps 1832 * don't adjust their read size to match our record 1833 * size, that's just life. Anyway, the typical usage 1834 * would be to issue, e.g., 64KB reads and occasionally 1835 * have to do deal with 512 byte or 1KB intermediate 1836 * records. 1837 */ 1838 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1839 MTIO_DSREG_RD : MTIO_DSREG_WR; 1840 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1841 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 1842 SCSI_RW_READ : SCSI_RW_WRITE) | 1843 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 1844 SCSI_RW_BIO : 0), FALSE, 1845 (softc->flags & SA_FLAG_FIXED) != 0, length, 1846 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 1847 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1848 IO_TIMEOUT); 1849 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1850 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1851 start_ccb->ccb_h.ccb_bp = bp; 1852 bp = bioq_first(&softc->bio_queue); 1853 xpt_action(start_ccb); 1854 } 1855 1856 if (bp != NULL) { 1857 /* Have more work to do, so ensure we stay scheduled */ 1858 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1859 } 1860 break; 1861 } 1862 case SA_STATE_ABNORMAL: 1863 default: 1864 panic("state 0x%x in sastart", softc->state); 1865 break; 1866 } 1867 } 1868 1869 1870 static void 1871 sadone(struct cam_periph *periph, union ccb *done_ccb) 1872 { 1873 struct sa_softc *softc; 1874 struct ccb_scsiio *csio; 1875 1876 softc = (struct sa_softc *)periph->softc; 1877 csio = &done_ccb->csio; 1878 switch (CCB_Type(csio)) { 1879 case SA_CCB_BUFFER_IO: 1880 { 1881 struct bio *bp; 1882 int error; 1883 1884 softc->dsreg = MTIO_DSREG_REST; 1885 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1886 error = 0; 1887 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1888 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1889 /* 1890 * A retry was scheduled, so just return. 1891 */ 1892 return; 1893 } 1894 } 1895 1896 if (error == EIO) { 1897 1898 /* 1899 * Catastrophic error. Mark the tape as frozen 1900 * (we no longer know tape position). 1901 * 1902 * Return all queued I/O with EIO, and unfreeze 1903 * our queue so that future transactions that 1904 * attempt to fix this problem can get to the 1905 * device. 1906 * 1907 */ 1908 1909 softc->flags |= SA_FLAG_TAPE_FROZEN; 1910 bioq_flush(&softc->bio_queue, NULL, EIO); 1911 } 1912 if (error != 0) { 1913 bp->bio_resid = bp->bio_bcount; 1914 bp->bio_error = error; 1915 bp->bio_flags |= BIO_ERROR; 1916 /* 1917 * In the error case, position is updated in saerror. 1918 */ 1919 } else { 1920 bp->bio_resid = csio->resid; 1921 bp->bio_error = 0; 1922 if (csio->resid != 0) { 1923 bp->bio_flags |= BIO_ERROR; 1924 } 1925 if (bp->bio_cmd == BIO_WRITE) { 1926 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1927 softc->filemarks = 0; 1928 } 1929 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1930 (softc->blkno != (daddr_t) -1)) { 1931 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1932 u_int32_t l; 1933 if (softc->blk_shift != 0) { 1934 l = bp->bio_bcount >> 1935 softc->blk_shift; 1936 } else { 1937 l = bp->bio_bcount / 1938 softc->media_blksize; 1939 } 1940 softc->blkno += (daddr_t) l; 1941 } else { 1942 softc->blkno++; 1943 } 1944 } 1945 } 1946 /* 1947 * If we had an error (immediate or pending), 1948 * release the device queue now. 1949 */ 1950 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1951 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1952 if (error || bp->bio_resid) { 1953 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1954 ("error %d resid %ld count %ld\n", error, 1955 bp->bio_resid, bp->bio_bcount)); 1956 } 1957 biofinish(bp, softc->device_stats, 0); 1958 break; 1959 } 1960 case SA_CCB_WAITING: 1961 { 1962 /* Caller will release the CCB */ 1963 wakeup(&done_ccb->ccb_h.cbfcnp); 1964 return; 1965 } 1966 } 1967 xpt_release_ccb(done_ccb); 1968 } 1969 1970 /* 1971 * Mount the tape (make sure it's ready for I/O). 1972 */ 1973 static int 1974 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1975 { 1976 struct sa_softc *softc; 1977 union ccb *ccb; 1978 int error; 1979 1980 /* 1981 * oflags can be checked for 'kind' of open (read-only check) - later 1982 * dev can be checked for a control-mode or compression open - later 1983 */ 1984 UNUSED_PARAMETER(oflags); 1985 UNUSED_PARAMETER(dev); 1986 1987 1988 softc = (struct sa_softc *)periph->softc; 1989 1990 /* 1991 * This should determine if something has happend since the last 1992 * open/mount that would invalidate the mount. We do *not* want 1993 * to retry this command- we just want the status. But we only 1994 * do this if we're mounted already- if we're not mounted, 1995 * we don't care about the unit read state and can instead use 1996 * this opportunity to attempt to reserve the tape unit. 1997 */ 1998 1999 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 2000 ccb = cam_periph_getccb(periph, 1); 2001 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2002 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2003 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2004 softc->device_stats); 2005 if (error == ENXIO) { 2006 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2007 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2008 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2009 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2010 softc->device_stats); 2011 } else if (error) { 2012 /* 2013 * We don't need to freeze the tape because we 2014 * will now attempt to rewind/load it. 2015 */ 2016 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2017 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2018 xpt_print(periph->path, 2019 "error %d on TUR in samount\n", error); 2020 } 2021 } 2022 } else { 2023 error = sareservereleaseunit(periph, TRUE); 2024 if (error) { 2025 return (error); 2026 } 2027 ccb = cam_periph_getccb(periph, 1); 2028 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2029 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2030 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2031 softc->device_stats); 2032 } 2033 2034 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2035 struct scsi_read_block_limits_data *rblim = NULL; 2036 int comp_enabled, comp_supported; 2037 u_int8_t write_protect, guessing = 0; 2038 2039 /* 2040 * Clear out old state. 2041 */ 2042 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2043 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 2044 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 2045 softc->filemarks = 0; 2046 2047 /* 2048 * *Very* first off, make sure we're loaded to BOT. 2049 */ 2050 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2051 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2052 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2053 softc->device_stats); 2054 2055 /* 2056 * In case this doesn't work, do a REWIND instead 2057 */ 2058 if (error) { 2059 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2060 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2061 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2062 softc->device_stats); 2063 } 2064 if (error) { 2065 xpt_release_ccb(ccb); 2066 goto exit; 2067 } 2068 2069 /* 2070 * Do a dummy test read to force access to the 2071 * media so that the drive will really know what's 2072 * there. We actually don't really care what the 2073 * blocksize on tape is and don't expect to really 2074 * read a full record. 2075 */ 2076 rblim = (struct scsi_read_block_limits_data *) 2077 malloc(8192, M_SCSISA, M_NOWAIT); 2078 if (rblim == NULL) { 2079 xpt_print(periph->path, "no memory for test read\n"); 2080 xpt_release_ccb(ccb); 2081 error = ENOMEM; 2082 goto exit; 2083 } 2084 2085 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2086 scsi_sa_read_write(&ccb->csio, 0, sadone, 2087 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2088 (void *) rblim, 8192, SSD_FULL_SIZE, 2089 IO_TIMEOUT); 2090 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2091 softc->device_stats); 2092 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2093 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2094 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2095 SF_NO_PRINT | SF_RETRY_UA, 2096 softc->device_stats); 2097 if (error) { 2098 xpt_print(periph->path, 2099 "unable to rewind after test read\n"); 2100 xpt_release_ccb(ccb); 2101 goto exit; 2102 } 2103 } 2104 2105 /* 2106 * Next off, determine block limits. 2107 */ 2108 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2109 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2110 2111 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2112 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2113 2114 xpt_release_ccb(ccb); 2115 2116 if (error != 0) { 2117 /* 2118 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2119 * a MANDATORY command. Anyway- it doesn't matter- 2120 * we can proceed anyway. 2121 */ 2122 softc->blk_gran = 0; 2123 softc->max_blk = ~0; 2124 softc->min_blk = 0; 2125 } else { 2126 if (softc->scsi_rev >= SCSI_REV_SPC) { 2127 softc->blk_gran = RBL_GRAN(rblim); 2128 } else { 2129 softc->blk_gran = 0; 2130 } 2131 /* 2132 * We take max_blk == min_blk to mean a default to 2133 * fixed mode- but note that whatever we get out of 2134 * sagetparams below will actually determine whether 2135 * we are actually *in* fixed mode. 2136 */ 2137 softc->max_blk = scsi_3btoul(rblim->maximum); 2138 softc->min_blk = scsi_2btoul(rblim->minimum); 2139 2140 2141 } 2142 /* 2143 * Next, perform a mode sense to determine 2144 * current density, blocksize, compression etc. 2145 */ 2146 error = sagetparams(periph, SA_PARAM_ALL, 2147 &softc->media_blksize, 2148 &softc->media_density, 2149 &softc->media_numblks, 2150 &softc->buffer_mode, &write_protect, 2151 &softc->speed, &comp_supported, 2152 &comp_enabled, &softc->comp_algorithm, 2153 NULL); 2154 2155 if (error != 0) { 2156 /* 2157 * We could work a little harder here. We could 2158 * adjust our attempts to get information. It 2159 * might be an ancient tape drive. If someone 2160 * nudges us, we'll do that. 2161 */ 2162 goto exit; 2163 } 2164 2165 /* 2166 * If no quirk has determined that this is a device that is 2167 * preferred to be in fixed or variable mode, now is the time 2168 * to find out. 2169 */ 2170 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2171 guessing = 1; 2172 /* 2173 * This could be expensive to find out. Luckily we 2174 * only need to do this once. If we start out in 2175 * 'default' mode, try and set ourselves to one 2176 * of the densities that would determine a wad 2177 * of other stuff. Go from highest to lowest. 2178 */ 2179 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2180 int i; 2181 static u_int8_t ctry[] = { 2182 SCSI_DENSITY_HALFINCH_PE, 2183 SCSI_DENSITY_HALFINCH_6250C, 2184 SCSI_DENSITY_HALFINCH_6250, 2185 SCSI_DENSITY_HALFINCH_1600, 2186 SCSI_DENSITY_HALFINCH_800, 2187 SCSI_DENSITY_QIC_4GB, 2188 SCSI_DENSITY_QIC_2GB, 2189 SCSI_DENSITY_QIC_525_320, 2190 SCSI_DENSITY_QIC_150, 2191 SCSI_DENSITY_QIC_120, 2192 SCSI_DENSITY_QIC_24, 2193 SCSI_DENSITY_QIC_11_9TRK, 2194 SCSI_DENSITY_QIC_11_4TRK, 2195 SCSI_DENSITY_QIC_1320, 2196 SCSI_DENSITY_QIC_3080, 2197 0 2198 }; 2199 for (i = 0; ctry[i]; i++) { 2200 error = sasetparams(periph, 2201 SA_PARAM_DENSITY, 0, ctry[i], 2202 0, SF_NO_PRINT); 2203 if (error == 0) { 2204 softc->media_density = ctry[i]; 2205 break; 2206 } 2207 } 2208 } 2209 switch (softc->media_density) { 2210 case SCSI_DENSITY_QIC_11_4TRK: 2211 case SCSI_DENSITY_QIC_11_9TRK: 2212 case SCSI_DENSITY_QIC_24: 2213 case SCSI_DENSITY_QIC_120: 2214 case SCSI_DENSITY_QIC_150: 2215 case SCSI_DENSITY_QIC_525_320: 2216 case SCSI_DENSITY_QIC_1320: 2217 case SCSI_DENSITY_QIC_3080: 2218 softc->quirks &= ~SA_QUIRK_2FM; 2219 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2220 softc->last_media_blksize = 512; 2221 break; 2222 case SCSI_DENSITY_QIC_4GB: 2223 case SCSI_DENSITY_QIC_2GB: 2224 softc->quirks &= ~SA_QUIRK_2FM; 2225 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2226 softc->last_media_blksize = 1024; 2227 break; 2228 default: 2229 softc->last_media_blksize = 2230 softc->media_blksize; 2231 softc->quirks |= SA_QUIRK_VARIABLE; 2232 break; 2233 } 2234 } 2235 2236 /* 2237 * If no quirk has determined that this is a device that needs 2238 * to have 2 Filemarks at EOD, now is the time to find out. 2239 */ 2240 2241 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2242 switch (softc->media_density) { 2243 case SCSI_DENSITY_HALFINCH_800: 2244 case SCSI_DENSITY_HALFINCH_1600: 2245 case SCSI_DENSITY_HALFINCH_6250: 2246 case SCSI_DENSITY_HALFINCH_6250C: 2247 case SCSI_DENSITY_HALFINCH_PE: 2248 softc->quirks &= ~SA_QUIRK_1FM; 2249 softc->quirks |= SA_QUIRK_2FM; 2250 break; 2251 default: 2252 break; 2253 } 2254 } 2255 2256 /* 2257 * Now validate that some info we got makes sense. 2258 */ 2259 if ((softc->max_blk < softc->media_blksize) || 2260 (softc->min_blk > softc->media_blksize && 2261 softc->media_blksize)) { 2262 xpt_print(periph->path, 2263 "BLOCK LIMITS (%d..%d) could not match current " 2264 "block settings (%d)- adjusting\n", softc->min_blk, 2265 softc->max_blk, softc->media_blksize); 2266 softc->max_blk = softc->min_blk = 2267 softc->media_blksize; 2268 } 2269 2270 /* 2271 * Now put ourselves into the right frame of mind based 2272 * upon quirks... 2273 */ 2274 tryagain: 2275 /* 2276 * If we want to be in FIXED mode and our current blocksize 2277 * is not equal to our last blocksize (if nonzero), try and 2278 * set ourselves to this last blocksize (as the 'preferred' 2279 * block size). The initial quirkmatch at registry sets the 2280 * initial 'last' blocksize. If, for whatever reason, this 2281 * 'last' blocksize is zero, set the blocksize to 512, 2282 * or min_blk if that's larger. 2283 */ 2284 if ((softc->quirks & SA_QUIRK_FIXED) && 2285 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2286 (softc->media_blksize != softc->last_media_blksize)) { 2287 softc->media_blksize = softc->last_media_blksize; 2288 if (softc->media_blksize == 0) { 2289 softc->media_blksize = 512; 2290 if (softc->media_blksize < softc->min_blk) { 2291 softc->media_blksize = softc->min_blk; 2292 } 2293 } 2294 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2295 softc->media_blksize, 0, 0, SF_NO_PRINT); 2296 if (error) { 2297 xpt_print(periph->path, 2298 "unable to set fixed blocksize to %d\n", 2299 softc->media_blksize); 2300 goto exit; 2301 } 2302 } 2303 2304 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2305 (softc->media_blksize != 0)) { 2306 softc->last_media_blksize = softc->media_blksize; 2307 softc->media_blksize = 0; 2308 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2309 0, 0, 0, SF_NO_PRINT); 2310 if (error) { 2311 /* 2312 * If this fails and we were guessing, just 2313 * assume that we got it wrong and go try 2314 * fixed block mode. Don't even check against 2315 * density code at this point. 2316 */ 2317 if (guessing) { 2318 softc->quirks &= ~SA_QUIRK_VARIABLE; 2319 softc->quirks |= SA_QUIRK_FIXED; 2320 if (softc->last_media_blksize == 0) 2321 softc->last_media_blksize = 512; 2322 goto tryagain; 2323 } 2324 xpt_print(periph->path, 2325 "unable to set variable blocksize\n"); 2326 goto exit; 2327 } 2328 } 2329 2330 /* 2331 * Now that we have the current block size, 2332 * set up some parameters for sastart's usage. 2333 */ 2334 if (softc->media_blksize) { 2335 softc->flags |= SA_FLAG_FIXED; 2336 if (powerof2(softc->media_blksize)) { 2337 softc->blk_shift = 2338 ffs(softc->media_blksize) - 1; 2339 softc->blk_mask = softc->media_blksize - 1; 2340 } else { 2341 softc->blk_mask = ~0; 2342 softc->blk_shift = 0; 2343 } 2344 } else { 2345 /* 2346 * The SCSI-3 spec allows 0 to mean "unspecified". 2347 * The SCSI-1 spec allows 0 to mean 'infinite'. 2348 * 2349 * Either works here. 2350 */ 2351 if (softc->max_blk == 0) { 2352 softc->max_blk = ~0; 2353 } 2354 softc->blk_shift = 0; 2355 if (softc->blk_gran != 0) { 2356 softc->blk_mask = softc->blk_gran - 1; 2357 } else { 2358 softc->blk_mask = 0; 2359 } 2360 } 2361 2362 if (write_protect) 2363 softc->flags |= SA_FLAG_TAPE_WP; 2364 2365 if (comp_supported) { 2366 if (softc->saved_comp_algorithm == 0) 2367 softc->saved_comp_algorithm = 2368 softc->comp_algorithm; 2369 softc->flags |= SA_FLAG_COMP_SUPP; 2370 if (comp_enabled) 2371 softc->flags |= SA_FLAG_COMP_ENABLED; 2372 } else 2373 softc->flags |= SA_FLAG_COMP_UNSUPP; 2374 2375 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2376 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2377 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2378 0, 0, SF_NO_PRINT); 2379 if (error == 0) { 2380 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2381 } else { 2382 xpt_print(periph->path, 2383 "unable to set buffered mode\n"); 2384 } 2385 error = 0; /* not an error */ 2386 } 2387 2388 2389 if (error == 0) { 2390 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2391 } 2392 exit: 2393 if (rblim != NULL) 2394 free(rblim, M_SCSISA); 2395 2396 if (error != 0) { 2397 softc->dsreg = MTIO_DSREG_NIL; 2398 } else { 2399 softc->fileno = softc->blkno = 0; 2400 softc->dsreg = MTIO_DSREG_REST; 2401 } 2402 #ifdef SA_1FM_AT_EOD 2403 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2404 softc->quirks |= SA_QUIRK_1FM; 2405 #else 2406 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2407 softc->quirks |= SA_QUIRK_2FM; 2408 #endif 2409 } else 2410 xpt_release_ccb(ccb); 2411 2412 /* 2413 * If we return an error, we're not mounted any more, 2414 * so release any device reservation. 2415 */ 2416 if (error != 0) { 2417 (void) sareservereleaseunit(periph, FALSE); 2418 } else { 2419 /* 2420 * Clear I/O residual. 2421 */ 2422 softc->last_io_resid = 0; 2423 softc->last_ctl_resid = 0; 2424 } 2425 return (error); 2426 } 2427 2428 /* 2429 * How many filemarks do we need to write if we were to terminate the 2430 * tape session right now? Note that this can be a negative number 2431 */ 2432 2433 static int 2434 samarkswanted(struct cam_periph *periph) 2435 { 2436 int markswanted; 2437 struct sa_softc *softc; 2438 2439 softc = (struct sa_softc *)periph->softc; 2440 markswanted = 0; 2441 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2442 markswanted++; 2443 if (softc->quirks & SA_QUIRK_2FM) 2444 markswanted++; 2445 } 2446 markswanted -= softc->filemarks; 2447 return (markswanted); 2448 } 2449 2450 static int 2451 sacheckeod(struct cam_periph *periph) 2452 { 2453 int error; 2454 int markswanted; 2455 2456 markswanted = samarkswanted(periph); 2457 2458 if (markswanted > 0) { 2459 error = sawritefilemarks(periph, markswanted, FALSE); 2460 } else { 2461 error = 0; 2462 } 2463 return (error); 2464 } 2465 2466 static int 2467 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2468 { 2469 static const char *toobig = 2470 "%d-byte tape record bigger than supplied buffer\n"; 2471 struct cam_periph *periph; 2472 struct sa_softc *softc; 2473 struct ccb_scsiio *csio; 2474 struct scsi_sense_data *sense; 2475 uint64_t resid = 0; 2476 int64_t info = 0; 2477 cam_status status; 2478 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 2479 int sense_len; 2480 uint8_t stream_bits; 2481 2482 periph = xpt_path_periph(ccb->ccb_h.path); 2483 softc = (struct sa_softc *)periph->softc; 2484 csio = &ccb->csio; 2485 sense = &csio->sense_data; 2486 sense_len = csio->sense_len - csio->sense_resid; 2487 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 2488 &asc, &ascq, /*show_errors*/ 1); 2489 if (asc != -1 && ascq != -1) 2490 aqvalid = 1; 2491 else 2492 aqvalid = 0; 2493 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 2494 stream_valid = 1; 2495 else 2496 stream_valid = 0; 2497 error = 0; 2498 2499 status = csio->ccb_h.status & CAM_STATUS_MASK; 2500 2501 /* 2502 * Calculate/latch up, any residuals... We do this in a funny 2-step 2503 * so we can print stuff here if we have CAM_DEBUG enabled for this 2504 * unit. 2505 */ 2506 if (status == CAM_SCSI_STATUS_ERROR) { 2507 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 2508 &info) == 0) { 2509 if ((softc->flags & SA_FLAG_FIXED) != 0) 2510 resid *= softc->media_blksize; 2511 } else { 2512 resid = csio->dxfer_len; 2513 info = resid; 2514 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2515 if (softc->media_blksize) 2516 info /= softc->media_blksize; 2517 } 2518 } 2519 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2520 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2521 sizeof (struct scsi_sense_data)); 2522 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2523 (int) csio->cdb_len); 2524 softc->last_io_resid = resid; 2525 softc->last_resid_was_io = 1; 2526 } else { 2527 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2528 sizeof (struct scsi_sense_data)); 2529 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2530 (int) csio->cdb_len); 2531 softc->last_ctl_resid = resid; 2532 softc->last_resid_was_io = 0; 2533 } 2534 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2535 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 2536 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2537 sense_key, asc, ascq, status, 2538 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 2539 csio->dxfer_len)); 2540 } else { 2541 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2542 ("Cam Status 0x%x\n", status)); 2543 } 2544 2545 switch (status) { 2546 case CAM_REQ_CMP: 2547 return (0); 2548 case CAM_SCSI_STATUS_ERROR: 2549 /* 2550 * If a read/write command, we handle it here. 2551 */ 2552 if (CCB_Type(csio) != SA_CCB_WAITING) { 2553 break; 2554 } 2555 /* 2556 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2557 * on a non read/write command, we assume it's not an error 2558 * and propagate the residule and return. 2559 */ 2560 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2561 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2562 csio->resid = resid; 2563 QFRLS(ccb); 2564 return (0); 2565 } 2566 /* 2567 * Otherwise, we let the common code handle this. 2568 */ 2569 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2570 2571 /* 2572 * XXX: To Be Fixed 2573 * We cannot depend upon CAM honoring retry counts for these. 2574 */ 2575 case CAM_SCSI_BUS_RESET: 2576 case CAM_BDR_SENT: 2577 if (ccb->ccb_h.retry_count <= 0) { 2578 return (EIO); 2579 } 2580 /* FALLTHROUGH */ 2581 default: 2582 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2583 } 2584 2585 /* 2586 * Handle filemark, end of tape, mismatched record sizes.... 2587 * From this point out, we're only handling read/write cases. 2588 * Handle writes && reads differently. 2589 */ 2590 2591 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2592 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2593 csio->resid = resid; 2594 error = ENOSPC; 2595 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 2596 softc->flags |= SA_FLAG_EOM_PENDING; 2597 /* 2598 * Grotesque as it seems, the few times 2599 * I've actually seen a non-zero resid, 2600 * the tape drive actually lied and had 2601 * written all the data!. 2602 */ 2603 csio->resid = 0; 2604 } 2605 } else { 2606 csio->resid = resid; 2607 if (sense_key == SSD_KEY_BLANK_CHECK) { 2608 if (softc->quirks & SA_QUIRK_1FM) { 2609 error = 0; 2610 softc->flags |= SA_FLAG_EOM_PENDING; 2611 } else { 2612 error = EIO; 2613 } 2614 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 2615 if (softc->flags & SA_FLAG_FIXED) { 2616 error = -1; 2617 softc->flags |= SA_FLAG_EOF_PENDING; 2618 } 2619 /* 2620 * Unconditionally, if we detected a filemark on a read, 2621 * mark that we've run moved a file ahead. 2622 */ 2623 if (softc->fileno != (daddr_t) -1) { 2624 softc->fileno++; 2625 softc->blkno = 0; 2626 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2627 } 2628 } 2629 } 2630 2631 /* 2632 * Incorrect Length usually applies to read, but can apply to writes. 2633 */ 2634 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 2635 if (info < 0) { 2636 xpt_print(csio->ccb_h.path, toobig, 2637 csio->dxfer_len - info); 2638 csio->resid = csio->dxfer_len; 2639 error = EIO; 2640 } else { 2641 csio->resid = resid; 2642 if (softc->flags & SA_FLAG_FIXED) { 2643 softc->flags |= SA_FLAG_EIO_PENDING; 2644 } 2645 /* 2646 * Bump the block number if we hadn't seen a filemark. 2647 * Do this independent of errors (we've moved anyway). 2648 */ 2649 if ((stream_valid == 0) || 2650 (stream_bits & SSD_FILEMARK) == 0) { 2651 if (softc->blkno != (daddr_t) -1) { 2652 softc->blkno++; 2653 csio->ccb_h.ccb_pflags |= 2654 SA_POSITION_UPDATED; 2655 } 2656 } 2657 } 2658 } 2659 2660 if (error <= 0) { 2661 /* 2662 * Unfreeze the queue if frozen as we're not returning anything 2663 * to our waiters that would indicate an I/O error has occurred 2664 * (yet). 2665 */ 2666 QFRLS(ccb); 2667 error = 0; 2668 } 2669 return (error); 2670 } 2671 2672 static int 2673 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2674 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2675 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2676 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2677 sa_comp_t *tcs) 2678 { 2679 union ccb *ccb; 2680 void *mode_buffer; 2681 struct scsi_mode_header_6 *mode_hdr; 2682 struct scsi_mode_blk_desc *mode_blk; 2683 int mode_buffer_len; 2684 struct sa_softc *softc; 2685 u_int8_t cpage; 2686 int error; 2687 cam_status status; 2688 2689 softc = (struct sa_softc *)periph->softc; 2690 ccb = cam_periph_getccb(periph, 1); 2691 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2692 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2693 else 2694 cpage = SA_DATA_COMPRESSION_PAGE; 2695 2696 retry: 2697 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2698 2699 if (params_to_get & SA_PARAM_COMPRESSION) { 2700 if (softc->quirks & SA_QUIRK_NOCOMP) { 2701 *comp_supported = FALSE; 2702 params_to_get &= ~SA_PARAM_COMPRESSION; 2703 } else 2704 mode_buffer_len += sizeof (sa_comp_t); 2705 } 2706 2707 /* XXX Fix M_NOWAIT */ 2708 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2709 if (mode_buffer == NULL) { 2710 xpt_release_ccb(ccb); 2711 return (ENOMEM); 2712 } 2713 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2714 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2715 2716 /* it is safe to retry this */ 2717 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2718 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2719 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2720 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2721 2722 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2723 softc->device_stats); 2724 2725 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2726 2727 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2728 /* 2729 * Hmm. Let's see if we can try another page... 2730 * If we've already done that, give up on compression 2731 * for this device and remember this for the future 2732 * and attempt the request without asking for compression 2733 * info. 2734 */ 2735 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2736 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2737 goto retry; 2738 } 2739 softc->quirks |= SA_QUIRK_NOCOMP; 2740 free(mode_buffer, M_SCSISA); 2741 goto retry; 2742 } else if (status == CAM_SCSI_STATUS_ERROR) { 2743 /* Tell the user about the fatal error. */ 2744 scsi_sense_print(&ccb->csio); 2745 goto sagetparamsexit; 2746 } 2747 2748 /* 2749 * If the user only wants the compression information, and 2750 * the device doesn't send back the block descriptor, it's 2751 * no big deal. If the user wants more than just 2752 * compression, though, and the device doesn't pass back the 2753 * block descriptor, we need to send another mode sense to 2754 * get the block descriptor. 2755 */ 2756 if ((mode_hdr->blk_desc_len == 0) && 2757 (params_to_get & SA_PARAM_COMPRESSION) && 2758 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2759 2760 /* 2761 * Decrease the mode buffer length by the size of 2762 * the compression page, to make sure the data 2763 * there doesn't get overwritten. 2764 */ 2765 mode_buffer_len -= sizeof (sa_comp_t); 2766 2767 /* 2768 * Now move the compression page that we presumably 2769 * got back down the memory chunk a little bit so 2770 * it doesn't get spammed. 2771 */ 2772 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2773 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2774 2775 /* 2776 * Now, we issue another mode sense and just ask 2777 * for the block descriptor, etc. 2778 */ 2779 2780 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2781 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2782 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2783 SCSIOP_TIMEOUT); 2784 2785 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2786 softc->device_stats); 2787 2788 if (error != 0) 2789 goto sagetparamsexit; 2790 } 2791 2792 if (params_to_get & SA_PARAM_BLOCKSIZE) 2793 *blocksize = scsi_3btoul(mode_blk->blklen); 2794 2795 if (params_to_get & SA_PARAM_NUMBLOCKS) 2796 *numblocks = scsi_3btoul(mode_blk->nblocks); 2797 2798 if (params_to_get & SA_PARAM_BUFF_MODE) 2799 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2800 2801 if (params_to_get & SA_PARAM_DENSITY) 2802 *density = mode_blk->density; 2803 2804 if (params_to_get & SA_PARAM_WP) 2805 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2806 2807 if (params_to_get & SA_PARAM_SPEED) 2808 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2809 2810 if (params_to_get & SA_PARAM_COMPRESSION) { 2811 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2812 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2813 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2814 *comp_supported = 2815 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2816 *comp_enabled = 2817 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2818 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2819 } else { 2820 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2821 /* 2822 * We don't really know whether this device supports 2823 * Data Compression if the algorithm field is 2824 * zero. Just say we do. 2825 */ 2826 *comp_supported = TRUE; 2827 *comp_enabled = 2828 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2829 *comp_algorithm = cp->sel_comp_alg; 2830 } 2831 if (tcs != NULL) 2832 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2833 } 2834 2835 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2836 int idx; 2837 char *xyz = mode_buffer; 2838 xpt_print_path(periph->path); 2839 printf("Mode Sense Data="); 2840 for (idx = 0; idx < mode_buffer_len; idx++) 2841 printf(" 0x%02x", xyz[idx] & 0xff); 2842 printf("\n"); 2843 } 2844 2845 sagetparamsexit: 2846 2847 xpt_release_ccb(ccb); 2848 free(mode_buffer, M_SCSISA); 2849 return (error); 2850 } 2851 2852 /* 2853 * The purpose of this function is to set one of four different parameters 2854 * for a tape drive: 2855 * - blocksize 2856 * - density 2857 * - compression / compression algorithm 2858 * - buffering mode 2859 * 2860 * The assumption is that this will be called from saioctl(), and therefore 2861 * from a process context. Thus the waiting malloc calls below. If that 2862 * assumption ever changes, the malloc calls should be changed to be 2863 * NOWAIT mallocs. 2864 * 2865 * Any or all of the four parameters may be set when this function is 2866 * called. It should handle setting more than one parameter at once. 2867 */ 2868 static int 2869 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2870 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2871 u_int32_t sense_flags) 2872 { 2873 struct sa_softc *softc; 2874 u_int32_t current_blocksize; 2875 u_int32_t current_calg; 2876 u_int8_t current_density; 2877 u_int8_t current_speed; 2878 int comp_enabled, comp_supported; 2879 void *mode_buffer; 2880 int mode_buffer_len; 2881 struct scsi_mode_header_6 *mode_hdr; 2882 struct scsi_mode_blk_desc *mode_blk; 2883 sa_comp_t *ccomp, *cpage; 2884 int buff_mode; 2885 union ccb *ccb = NULL; 2886 int error; 2887 2888 softc = (struct sa_softc *)periph->softc; 2889 2890 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2891 if (ccomp == NULL) 2892 return (ENOMEM); 2893 2894 /* 2895 * Since it doesn't make sense to set the number of blocks, or 2896 * write protection, we won't try to get the current value. We 2897 * always want to get the blocksize, so we can set it back to the 2898 * proper value. 2899 */ 2900 error = sagetparams(periph, 2901 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2902 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2903 ¤t_speed, &comp_supported, &comp_enabled, 2904 ¤t_calg, ccomp); 2905 2906 if (error != 0) { 2907 free(ccomp, M_SCSISA); 2908 return (error); 2909 } 2910 2911 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2912 if (params_to_set & SA_PARAM_COMPRESSION) 2913 mode_buffer_len += sizeof (sa_comp_t); 2914 2915 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2916 if (mode_buffer == NULL) { 2917 free(ccomp, M_SCSISA); 2918 return (ENOMEM); 2919 } 2920 2921 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2922 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2923 2924 ccb = cam_periph_getccb(periph, 1); 2925 2926 retry: 2927 2928 if (params_to_set & SA_PARAM_COMPRESSION) { 2929 if (mode_blk) { 2930 cpage = (sa_comp_t *)&mode_blk[1]; 2931 } else { 2932 cpage = (sa_comp_t *)&mode_hdr[1]; 2933 } 2934 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2935 cpage->hdr.pagecode &= ~0x80; 2936 } else 2937 cpage = NULL; 2938 2939 /* 2940 * If the caller wants us to set the blocksize, use the one they 2941 * pass in. Otherwise, use the blocksize we got back from the 2942 * mode select above. 2943 */ 2944 if (mode_blk) { 2945 if (params_to_set & SA_PARAM_BLOCKSIZE) 2946 scsi_ulto3b(blocksize, mode_blk->blklen); 2947 else 2948 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2949 2950 /* 2951 * Set density if requested, else preserve old density. 2952 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2953 * devices, else density we've latched up in our softc. 2954 */ 2955 if (params_to_set & SA_PARAM_DENSITY) { 2956 mode_blk->density = density; 2957 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2958 mode_blk->density = SCSI_SAME_DENSITY; 2959 } else { 2960 mode_blk->density = softc->media_density; 2961 } 2962 } 2963 2964 /* 2965 * For mode selects, these two fields must be zero. 2966 */ 2967 mode_hdr->data_length = 0; 2968 mode_hdr->medium_type = 0; 2969 2970 /* set the speed to the current value */ 2971 mode_hdr->dev_spec = current_speed; 2972 2973 /* if set, set single-initiator buffering mode */ 2974 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2975 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2976 } 2977 2978 if (mode_blk) 2979 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2980 else 2981 mode_hdr->blk_desc_len = 0; 2982 2983 /* 2984 * First, if the user wants us to set the compression algorithm or 2985 * just turn compression on, check to make sure that this drive 2986 * supports compression. 2987 */ 2988 if (params_to_set & SA_PARAM_COMPRESSION) { 2989 /* 2990 * If the compression algorithm is 0, disable compression. 2991 * If the compression algorithm is non-zero, enable 2992 * compression and set the compression type to the 2993 * specified compression algorithm, unless the algorithm is 2994 * MT_COMP_ENABLE. In that case, we look at the 2995 * compression algorithm that is currently set and if it is 2996 * non-zero, we leave it as-is. If it is zero, and we have 2997 * saved a compression algorithm from a time when 2998 * compression was enabled before, set the compression to 2999 * the saved value. 3000 */ 3001 switch (ccomp->hdr.pagecode & ~0x80) { 3002 case SA_DEVICE_CONFIGURATION_PAGE: 3003 { 3004 struct scsi_dev_conf_page *dcp = &cpage->dconf; 3005 if (calg == 0) { 3006 dcp->sel_comp_alg = SA_COMP_NONE; 3007 break; 3008 } 3009 if (calg != MT_COMP_ENABLE) { 3010 dcp->sel_comp_alg = calg; 3011 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 3012 softc->saved_comp_algorithm != 0) { 3013 dcp->sel_comp_alg = softc->saved_comp_algorithm; 3014 } 3015 break; 3016 } 3017 case SA_DATA_COMPRESSION_PAGE: 3018 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 3019 struct scsi_data_compression_page *dcp = &cpage->dcomp; 3020 if (calg == 0) { 3021 /* 3022 * Disable compression, but leave the 3023 * decompression and the capability bit 3024 * alone. 3025 */ 3026 dcp->dce_and_dcc = SA_DCP_DCC; 3027 dcp->dde_and_red |= SA_DCP_DDE; 3028 break; 3029 } 3030 /* enable compression && decompression */ 3031 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 3032 dcp->dde_and_red |= SA_DCP_DDE; 3033 /* 3034 * If there, use compression algorithm from caller. 3035 * Otherwise, if there's a saved compression algorithm 3036 * and there is no current algorithm, use the saved 3037 * algorithm. Else parrot back what we got and hope 3038 * for the best. 3039 */ 3040 if (calg != MT_COMP_ENABLE) { 3041 scsi_ulto4b(calg, dcp->comp_algorithm); 3042 scsi_ulto4b(calg, dcp->decomp_algorithm); 3043 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 3044 softc->saved_comp_algorithm != 0) { 3045 scsi_ulto4b(softc->saved_comp_algorithm, 3046 dcp->comp_algorithm); 3047 scsi_ulto4b(softc->saved_comp_algorithm, 3048 dcp->decomp_algorithm); 3049 } 3050 break; 3051 } 3052 /* 3053 * Compression does not appear to be supported- 3054 * at least via the DATA COMPRESSION page. It 3055 * would be too much to ask us to believe that 3056 * the page itself is supported, but incorrectly 3057 * reports an ability to manipulate data compression, 3058 * so we'll assume that this device doesn't support 3059 * compression. We can just fall through for that. 3060 */ 3061 /* FALLTHROUGH */ 3062 default: 3063 /* 3064 * The drive doesn't seem to support compression, 3065 * so turn off the set compression bit. 3066 */ 3067 params_to_set &= ~SA_PARAM_COMPRESSION; 3068 xpt_print(periph->path, 3069 "device does not seem to support compression\n"); 3070 3071 /* 3072 * If that was the only thing the user wanted us to set, 3073 * clean up allocated resources and return with 3074 * 'operation not supported'. 3075 */ 3076 if (params_to_set == SA_PARAM_NONE) { 3077 free(mode_buffer, M_SCSISA); 3078 xpt_release_ccb(ccb); 3079 return (ENODEV); 3080 } 3081 3082 /* 3083 * That wasn't the only thing the user wanted us to set. 3084 * So, decrease the stated mode buffer length by the 3085 * size of the compression mode page. 3086 */ 3087 mode_buffer_len -= sizeof(sa_comp_t); 3088 } 3089 } 3090 3091 /* It is safe to retry this operation */ 3092 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 3093 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 3094 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3095 3096 error = cam_periph_runccb(ccb, saerror, 0, 3097 sense_flags, softc->device_stats); 3098 3099 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3100 int idx; 3101 char *xyz = mode_buffer; 3102 xpt_print_path(periph->path); 3103 printf("Err%d, Mode Select Data=", error); 3104 for (idx = 0; idx < mode_buffer_len; idx++) 3105 printf(" 0x%02x", xyz[idx] & 0xff); 3106 printf("\n"); 3107 } 3108 3109 3110 if (error) { 3111 /* 3112 * If we can, try without setting density/blocksize. 3113 */ 3114 if (mode_blk) { 3115 if ((params_to_set & 3116 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 3117 mode_blk = NULL; 3118 goto retry; 3119 } 3120 } else { 3121 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3122 cpage = (sa_comp_t *)&mode_blk[1]; 3123 } 3124 3125 /* 3126 * If we were setting the blocksize, and that failed, we 3127 * want to set it to its original value. If we weren't 3128 * setting the blocksize, we don't want to change it. 3129 */ 3130 scsi_ulto3b(current_blocksize, mode_blk->blklen); 3131 3132 /* 3133 * Set density if requested, else preserve old density. 3134 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 3135 * devices, else density we've latched up in our softc. 3136 */ 3137 if (params_to_set & SA_PARAM_DENSITY) { 3138 mode_blk->density = current_density; 3139 } else if (softc->scsi_rev > SCSI_REV_CCS) { 3140 mode_blk->density = SCSI_SAME_DENSITY; 3141 } else { 3142 mode_blk->density = softc->media_density; 3143 } 3144 3145 if (params_to_set & SA_PARAM_COMPRESSION) 3146 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3147 3148 /* 3149 * The retry count is the only CCB field that might have been 3150 * changed that we care about, so reset it back to 1. 3151 */ 3152 ccb->ccb_h.retry_count = 1; 3153 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3154 softc->device_stats); 3155 } 3156 3157 xpt_release_ccb(ccb); 3158 3159 if (ccomp != NULL) 3160 free(ccomp, M_SCSISA); 3161 3162 if (params_to_set & SA_PARAM_COMPRESSION) { 3163 if (error) { 3164 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3165 /* 3166 * Even if we get an error setting compression, 3167 * do not say that we don't support it. We could 3168 * have been wrong, or it may be media specific. 3169 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3170 */ 3171 softc->saved_comp_algorithm = softc->comp_algorithm; 3172 softc->comp_algorithm = 0; 3173 } else { 3174 softc->flags |= SA_FLAG_COMP_ENABLED; 3175 softc->comp_algorithm = calg; 3176 } 3177 } 3178 3179 free(mode_buffer, M_SCSISA); 3180 return (error); 3181 } 3182 3183 static void 3184 saprevent(struct cam_periph *periph, int action) 3185 { 3186 struct sa_softc *softc; 3187 union ccb *ccb; 3188 int error, sf; 3189 3190 softc = (struct sa_softc *)periph->softc; 3191 3192 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3193 return; 3194 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3195 return; 3196 3197 /* 3198 * We can be quiet about illegal requests. 3199 */ 3200 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3201 sf = 0; 3202 } else 3203 sf = SF_QUIET_IR; 3204 3205 ccb = cam_periph_getccb(periph, 1); 3206 3207 /* It is safe to retry this operation */ 3208 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3209 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3210 3211 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3212 if (error == 0) { 3213 if (action == PR_ALLOW) 3214 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3215 else 3216 softc->flags |= SA_FLAG_TAPE_LOCKED; 3217 } 3218 3219 xpt_release_ccb(ccb); 3220 } 3221 3222 static int 3223 sarewind(struct cam_periph *periph) 3224 { 3225 union ccb *ccb; 3226 struct sa_softc *softc; 3227 int error; 3228 3229 softc = (struct sa_softc *)periph->softc; 3230 3231 ccb = cam_periph_getccb(periph, 1); 3232 3233 /* It is safe to retry this operation */ 3234 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3235 SSD_FULL_SIZE, REWIND_TIMEOUT); 3236 3237 softc->dsreg = MTIO_DSREG_REW; 3238 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3239 softc->dsreg = MTIO_DSREG_REST; 3240 3241 xpt_release_ccb(ccb); 3242 if (error == 0) 3243 softc->fileno = softc->blkno = (daddr_t) 0; 3244 else 3245 softc->fileno = softc->blkno = (daddr_t) -1; 3246 return (error); 3247 } 3248 3249 static int 3250 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3251 { 3252 union ccb *ccb; 3253 struct sa_softc *softc; 3254 int error; 3255 3256 softc = (struct sa_softc *)periph->softc; 3257 3258 ccb = cam_periph_getccb(periph, 1); 3259 3260 /* This cannot be retried */ 3261 3262 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3263 SSD_FULL_SIZE, SPACE_TIMEOUT); 3264 3265 /* 3266 * Clear residual because we will be using it. 3267 */ 3268 softc->last_ctl_resid = 0; 3269 3270 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3271 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3272 softc->dsreg = MTIO_DSREG_REST; 3273 3274 xpt_release_ccb(ccb); 3275 3276 /* 3277 * If a spacing operation has failed, we need to invalidate 3278 * this mount. 3279 * 3280 * If the spacing operation was setmarks or to end of recorded data, 3281 * we no longer know our relative position. 3282 * 3283 * If the spacing operations was spacing files in reverse, we 3284 * take account of the residual, but still check against less 3285 * than zero- if we've gone negative, we must have hit BOT. 3286 * 3287 * If the spacing operations was spacing records in reverse and 3288 * we have a residual, we've either hit BOT or hit a filemark. 3289 * In the former case, we know our new record number (0). In 3290 * the latter case, we have absolutely no idea what the real 3291 * record number is- we've stopped between the end of the last 3292 * record in the previous file and the filemark that stopped 3293 * our spacing backwards. 3294 */ 3295 if (error) { 3296 softc->fileno = softc->blkno = (daddr_t) -1; 3297 } else if (code == SS_SETMARKS || code == SS_EOD) { 3298 softc->fileno = softc->blkno = (daddr_t) -1; 3299 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3300 softc->fileno += (count - softc->last_ctl_resid); 3301 if (softc->fileno < 0) /* we must of hit BOT */ 3302 softc->fileno = 0; 3303 softc->blkno = 0; 3304 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3305 softc->blkno += (count - softc->last_ctl_resid); 3306 if (count < 0) { 3307 if (softc->last_ctl_resid || softc->blkno < 0) { 3308 if (softc->fileno == 0) { 3309 softc->blkno = 0; 3310 } else { 3311 softc->blkno = (daddr_t) -1; 3312 } 3313 } 3314 } 3315 } 3316 return (error); 3317 } 3318 3319 static int 3320 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3321 { 3322 union ccb *ccb; 3323 struct sa_softc *softc; 3324 int error, nwm = 0; 3325 3326 softc = (struct sa_softc *)periph->softc; 3327 if (softc->open_rdonly) 3328 return (EBADF); 3329 3330 ccb = cam_periph_getccb(periph, 1); 3331 /* 3332 * Clear residual because we will be using it. 3333 */ 3334 softc->last_ctl_resid = 0; 3335 3336 softc->dsreg = MTIO_DSREG_FMK; 3337 /* this *must* not be retried */ 3338 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3339 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3340 softc->dsreg = MTIO_DSREG_REST; 3341 3342 3343 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3344 3345 if (error == 0 && nmarks) { 3346 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3347 nwm = nmarks - softc->last_ctl_resid; 3348 softc->filemarks += nwm; 3349 } 3350 3351 xpt_release_ccb(ccb); 3352 3353 /* 3354 * Update relative positions (if we're doing that). 3355 */ 3356 if (error) { 3357 softc->fileno = softc->blkno = (daddr_t) -1; 3358 } else if (softc->fileno != (daddr_t) -1) { 3359 softc->fileno += nwm; 3360 softc->blkno = 0; 3361 } 3362 return (error); 3363 } 3364 3365 static int 3366 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3367 { 3368 struct scsi_tape_position_data loc; 3369 union ccb *ccb; 3370 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3371 int error; 3372 3373 /* 3374 * We try and flush any buffered writes here if we were writing 3375 * and we're trying to get hardware block position. It eats 3376 * up performance substantially, but I'm wary of drive firmware. 3377 * 3378 * I think that *logical* block position is probably okay- 3379 * but hardware block position might have to wait for data 3380 * to hit media to be valid. Caveat Emptor. 3381 */ 3382 3383 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3384 error = sawritefilemarks(periph, 0, 0); 3385 if (error && error != EACCES) 3386 return (error); 3387 } 3388 3389 ccb = cam_periph_getccb(periph, 1); 3390 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3391 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3392 softc->dsreg = MTIO_DSREG_RBSY; 3393 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3394 softc->dsreg = MTIO_DSREG_REST; 3395 3396 if (error == 0) { 3397 if (loc.flags & SA_RPOS_UNCERTAIN) { 3398 error = EINVAL; /* nothing is certain */ 3399 } else { 3400 *blkptr = scsi_4btoul(loc.firstblk); 3401 } 3402 } 3403 3404 xpt_release_ccb(ccb); 3405 return (error); 3406 } 3407 3408 static int 3409 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3410 { 3411 union ccb *ccb; 3412 struct sa_softc *softc; 3413 int error; 3414 3415 /* 3416 * We used to try and flush any buffered writes here. 3417 * Now we push this onto user applications to either 3418 * flush the pending writes themselves (via a zero count 3419 * WRITE FILEMARKS command) or they can trust their tape 3420 * drive to do this correctly for them. 3421 */ 3422 3423 softc = (struct sa_softc *)periph->softc; 3424 ccb = cam_periph_getccb(periph, 1); 3425 3426 3427 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3428 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3429 3430 3431 softc->dsreg = MTIO_DSREG_POS; 3432 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3433 softc->dsreg = MTIO_DSREG_REST; 3434 xpt_release_ccb(ccb); 3435 /* 3436 * Note relative file && block number position as now unknown. 3437 */ 3438 softc->fileno = softc->blkno = (daddr_t) -1; 3439 return (error); 3440 } 3441 3442 static int 3443 saretension(struct cam_periph *periph) 3444 { 3445 union ccb *ccb; 3446 struct sa_softc *softc; 3447 int error; 3448 3449 softc = (struct sa_softc *)periph->softc; 3450 3451 ccb = cam_periph_getccb(periph, 1); 3452 3453 /* It is safe to retry this operation */ 3454 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3455 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3456 3457 softc->dsreg = MTIO_DSREG_TEN; 3458 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3459 softc->dsreg = MTIO_DSREG_REST; 3460 3461 xpt_release_ccb(ccb); 3462 if (error == 0) 3463 softc->fileno = softc->blkno = (daddr_t) 0; 3464 else 3465 softc->fileno = softc->blkno = (daddr_t) -1; 3466 return (error); 3467 } 3468 3469 static int 3470 sareservereleaseunit(struct cam_periph *periph, int reserve) 3471 { 3472 union ccb *ccb; 3473 struct sa_softc *softc; 3474 int error; 3475 3476 softc = (struct sa_softc *)periph->softc; 3477 ccb = cam_periph_getccb(periph, 1); 3478 3479 /* It is safe to retry this operation */ 3480 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3481 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3482 softc->dsreg = MTIO_DSREG_RBSY; 3483 error = cam_periph_runccb(ccb, saerror, 0, 3484 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3485 softc->dsreg = MTIO_DSREG_REST; 3486 xpt_release_ccb(ccb); 3487 3488 /* 3489 * If the error was Illegal Request, then the device doesn't support 3490 * RESERVE/RELEASE. This is not an error. 3491 */ 3492 if (error == EINVAL) { 3493 error = 0; 3494 } 3495 3496 return (error); 3497 } 3498 3499 static int 3500 saloadunload(struct cam_periph *periph, int load) 3501 { 3502 union ccb *ccb; 3503 struct sa_softc *softc; 3504 int error; 3505 3506 softc = (struct sa_softc *)periph->softc; 3507 3508 ccb = cam_periph_getccb(periph, 1); 3509 3510 /* It is safe to retry this operation */ 3511 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3512 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3513 3514 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3515 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3516 softc->dsreg = MTIO_DSREG_REST; 3517 xpt_release_ccb(ccb); 3518 3519 if (error || load == 0) 3520 softc->fileno = softc->blkno = (daddr_t) -1; 3521 else if (error == 0) 3522 softc->fileno = softc->blkno = (daddr_t) 0; 3523 return (error); 3524 } 3525 3526 static int 3527 saerase(struct cam_periph *periph, int longerase) 3528 { 3529 3530 union ccb *ccb; 3531 struct sa_softc *softc; 3532 int error; 3533 3534 softc = (struct sa_softc *)periph->softc; 3535 if (softc->open_rdonly) 3536 return (EBADF); 3537 3538 ccb = cam_periph_getccb(periph, 1); 3539 3540 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3541 SSD_FULL_SIZE, ERASE_TIMEOUT); 3542 3543 softc->dsreg = MTIO_DSREG_ZER; 3544 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3545 softc->dsreg = MTIO_DSREG_REST; 3546 3547 xpt_release_ccb(ccb); 3548 return (error); 3549 } 3550 3551 #endif /* _KERNEL */ 3552 3553 /* 3554 * Read tape block limits command. 3555 */ 3556 void 3557 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3558 void (*cbfcnp)(struct cam_periph *, union ccb *), 3559 u_int8_t tag_action, 3560 struct scsi_read_block_limits_data *rlimit_buf, 3561 u_int8_t sense_len, u_int32_t timeout) 3562 { 3563 struct scsi_read_block_limits *scsi_cmd; 3564 3565 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3566 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3567 sizeof(*scsi_cmd), timeout); 3568 3569 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3570 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3571 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3572 } 3573 3574 void 3575 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3576 void (*cbfcnp)(struct cam_periph *, union ccb *), 3577 u_int8_t tag_action, int readop, int sli, 3578 int fixed, u_int32_t length, u_int8_t *data_ptr, 3579 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3580 { 3581 struct scsi_sa_rw *scsi_cmd; 3582 int read; 3583 3584 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 3585 3586 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3587 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 3588 scsi_cmd->sli_fixed = 0; 3589 if (sli && read) 3590 scsi_cmd->sli_fixed |= SAR_SLI; 3591 if (fixed) 3592 scsi_cmd->sli_fixed |= SARW_FIXED; 3593 scsi_ulto3b(length, scsi_cmd->length); 3594 scsi_cmd->control = 0; 3595 3596 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 3597 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 3598 tag_action, data_ptr, dxfer_len, sense_len, 3599 sizeof(*scsi_cmd), timeout); 3600 } 3601 3602 void 3603 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3604 void (*cbfcnp)(struct cam_periph *, union ccb *), 3605 u_int8_t tag_action, int immediate, int eot, 3606 int reten, int load, u_int8_t sense_len, 3607 u_int32_t timeout) 3608 { 3609 struct scsi_load_unload *scsi_cmd; 3610 3611 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3612 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3613 scsi_cmd->opcode = LOAD_UNLOAD; 3614 if (immediate) 3615 scsi_cmd->immediate = SLU_IMMED; 3616 if (eot) 3617 scsi_cmd->eot_reten_load |= SLU_EOT; 3618 if (reten) 3619 scsi_cmd->eot_reten_load |= SLU_RETEN; 3620 if (load) 3621 scsi_cmd->eot_reten_load |= SLU_LOAD; 3622 3623 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3624 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3625 } 3626 3627 void 3628 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3629 void (*cbfcnp)(struct cam_periph *, union ccb *), 3630 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3631 u_int32_t timeout) 3632 { 3633 struct scsi_rewind *scsi_cmd; 3634 3635 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3636 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3637 scsi_cmd->opcode = REWIND; 3638 if (immediate) 3639 scsi_cmd->immediate = SREW_IMMED; 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_space(struct ccb_scsiio *csio, u_int32_t retries, 3647 void (*cbfcnp)(struct cam_periph *, union ccb *), 3648 u_int8_t tag_action, scsi_space_code code, 3649 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3650 { 3651 struct scsi_space *scsi_cmd; 3652 3653 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3654 scsi_cmd->opcode = SPACE; 3655 scsi_cmd->code = code; 3656 scsi_ulto3b(count, scsi_cmd->count); 3657 scsi_cmd->control = 0; 3658 3659 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3660 0, sense_len, sizeof(*scsi_cmd), timeout); 3661 } 3662 3663 void 3664 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3665 void (*cbfcnp)(struct cam_periph *, union ccb *), 3666 u_int8_t tag_action, int immediate, int setmark, 3667 u_int32_t num_marks, u_int8_t sense_len, 3668 u_int32_t timeout) 3669 { 3670 struct scsi_write_filemarks *scsi_cmd; 3671 3672 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3673 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3674 scsi_cmd->opcode = WRITE_FILEMARKS; 3675 if (immediate) 3676 scsi_cmd->byte2 |= SWFMRK_IMMED; 3677 if (setmark) 3678 scsi_cmd->byte2 |= SWFMRK_WSMK; 3679 3680 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3681 3682 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3683 0, sense_len, sizeof(*scsi_cmd), timeout); 3684 } 3685 3686 /* 3687 * The reserve and release unit commands differ only by their opcodes. 3688 */ 3689 void 3690 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3691 void (*cbfcnp)(struct cam_periph *, union ccb *), 3692 u_int8_t tag_action, int third_party, 3693 int third_party_id, u_int8_t sense_len, 3694 u_int32_t timeout, int reserve) 3695 { 3696 struct scsi_reserve_release_unit *scsi_cmd; 3697 3698 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3699 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3700 3701 if (reserve) 3702 scsi_cmd->opcode = RESERVE_UNIT; 3703 else 3704 scsi_cmd->opcode = RELEASE_UNIT; 3705 3706 if (third_party) { 3707 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3708 scsi_cmd->lun_thirdparty |= 3709 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3710 } 3711 3712 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3713 0, sense_len, sizeof(*scsi_cmd), timeout); 3714 } 3715 3716 void 3717 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3718 void (*cbfcnp)(struct cam_periph *, union ccb *), 3719 u_int8_t tag_action, int immediate, int long_erase, 3720 u_int8_t sense_len, u_int32_t timeout) 3721 { 3722 struct scsi_erase *scsi_cmd; 3723 3724 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3725 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3726 3727 scsi_cmd->opcode = ERASE; 3728 3729 if (immediate) 3730 scsi_cmd->lun_imm_long |= SE_IMMED; 3731 3732 if (long_erase) 3733 scsi_cmd->lun_imm_long |= SE_LONG; 3734 3735 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3736 0, sense_len, sizeof(*scsi_cmd), timeout); 3737 } 3738 3739 /* 3740 * Read Tape Position command. 3741 */ 3742 void 3743 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3744 void (*cbfcnp)(struct cam_periph *, union ccb *), 3745 u_int8_t tag_action, int hardsoft, 3746 struct scsi_tape_position_data *sbp, 3747 u_int8_t sense_len, u_int32_t timeout) 3748 { 3749 struct scsi_tape_read_position *scmd; 3750 3751 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3752 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3753 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3754 bzero(scmd, sizeof(*scmd)); 3755 scmd->opcode = READ_POSITION; 3756 scmd->byte1 = hardsoft; 3757 } 3758 3759 /* 3760 * Set Tape Position command. 3761 */ 3762 void 3763 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3764 void (*cbfcnp)(struct cam_periph *, union ccb *), 3765 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3766 u_int8_t sense_len, u_int32_t timeout) 3767 { 3768 struct scsi_tape_locate *scmd; 3769 3770 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3771 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3772 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3773 bzero(scmd, sizeof(*scmd)); 3774 scmd->opcode = LOCATE; 3775 if (hardsoft) 3776 scmd->byte1 |= SA_SPOS_BT; 3777 scsi_ulto4b(blkno, scmd->blkaddr); 3778 } 3779