1 /* 2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $ 3 * 4 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 5 * 6 * Copyright (c) 1999, 2000 Matthew Jacob 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification, immediately at the beginning of the file. 15 * 2. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 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 #ifdef _KERNEL 40 #include <sys/buf.h> 41 #include <sys/malloc.h> 42 #endif 43 #include <sys/mtio.h> 44 #include <sys/conf.h> 45 #ifdef _KERNEL 46 #include <sys/proc.h> 47 #include <sys/buf2.h> 48 #include <sys/thread2.h> 49 #endif 50 #include <sys/fcntl.h> 51 #include <sys/devicestat.h> 52 #include <machine/limits.h> 53 54 #ifndef _KERNEL 55 #include <stdio.h> 56 #include <string.h> 57 #endif 58 59 #include "../cam.h" 60 #include "../cam_ccb.h" 61 #include "../cam_extend.h" 62 #include "../cam_periph.h" 63 #include "../cam_xpt_periph.h" 64 #include "../cam_debug.h" 65 66 #include "scsi_all.h" 67 #include "scsi_message.h" 68 #include "scsi_sa.h" 69 70 #ifdef _KERNEL 71 72 #include <opt_sa.h> 73 74 #ifndef SA_IO_TIMEOUT 75 #define SA_IO_TIMEOUT 4 76 #endif 77 #ifndef SA_SPACE_TIMEOUT 78 #define SA_SPACE_TIMEOUT 1 * 60 79 #endif 80 #ifndef SA_REWIND_TIMEOUT 81 #define SA_REWIND_TIMEOUT 2 * 60 82 #endif 83 #ifndef SA_ERASE_TIMEOUT 84 #define SA_ERASE_TIMEOUT 4 * 60 85 #endif 86 87 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 88 89 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 90 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 91 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 92 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 93 94 /* 95 * Additional options that can be set for config: SA_1FM_AT_EOT 96 */ 97 98 #define QFRLS(ccb) \ 99 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 100 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 101 102 /* 103 * Driver states 104 */ 105 106 MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 107 108 typedef enum { 109 SA_STATE_NORMAL, SA_STATE_ABNORMAL 110 } sa_state; 111 112 #define ccb_pflags ppriv_field0 113 #define ccb_bio ppriv_ptr1 114 115 #define SA_CCB_POLLED 0x00 116 #define SA_CCB_BUFFER_IO 0x01 117 #define SA_CCB_WAITING 0x02 118 #define SA_CCB_TYPEMASK 0x0F 119 #define SA_POSITION_UPDATED 0x10 120 121 #define Set_CCB_Type(x, type) do { \ 122 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 123 x->ccb_h.ccb_pflags |= type; \ 124 } while (0) 125 126 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 127 128 129 130 typedef enum { 131 SA_FLAG_OPEN = 0x0001, 132 SA_FLAG_FIXED = 0x0002, 133 SA_FLAG_TAPE_LOCKED = 0x0004, 134 SA_FLAG_TAPE_MOUNTED = 0x0008, 135 SA_FLAG_TAPE_WP = 0x0010, 136 SA_FLAG_TAPE_WRITTEN = 0x0020, 137 SA_FLAG_EOM_PENDING = 0x0040, 138 SA_FLAG_EIO_PENDING = 0x0080, 139 SA_FLAG_EOF_PENDING = 0x0100, 140 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 141 SA_FLAG_EOF_PENDING), 142 SA_FLAG_INVALID = 0x0200, 143 SA_FLAG_COMP_ENABLED = 0x0400, 144 SA_FLAG_COMP_SUPP = 0x0800, 145 SA_FLAG_COMP_UNSUPP = 0x1000, 146 SA_FLAG_TAPE_FROZEN = 0x2000 147 } sa_flags; 148 149 typedef enum { 150 SA_MODE_REWIND = 0x00, 151 SA_MODE_NOREWIND = 0x01, 152 SA_MODE_OFFLINE = 0x02 153 } sa_mode; 154 155 typedef enum { 156 SA_PARAM_NONE = 0x00, 157 SA_PARAM_BLOCKSIZE = 0x01, 158 SA_PARAM_DENSITY = 0x02, 159 SA_PARAM_COMPRESSION = 0x04, 160 SA_PARAM_BUFF_MODE = 0x08, 161 SA_PARAM_NUMBLOCKS = 0x10, 162 SA_PARAM_WP = 0x20, 163 SA_PARAM_SPEED = 0x40, 164 SA_PARAM_ALL = 0x7f 165 } sa_params; 166 167 typedef enum { 168 SA_QUIRK_NONE = 0x00, 169 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 170 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 171 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 172 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 173 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 174 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 175 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 176 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 177 } sa_quirks; 178 179 /* units are bits 4-7, 16-21 (1024 units) */ 180 #define SAUNIT(DEV) \ 181 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 182 183 #define SAMODE(z) ((minor(z) & 0x3)) 184 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 185 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 186 187 #define SA_NOT_CTLDEV 0 188 #define SA_CTLDEV 1 189 190 #define SA_ATYPE_R 0 191 #define SA_ATYPE_NR 1 192 #define SA_ATYPE_ER 2 193 194 #define SAMINOR(ctl, unit, mode, access) \ 195 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 196 (mode << 0x2) | (access & 0x3)) 197 198 #define SA_UNITMASK SAMINOR(0, -1, 0, 0) 199 #define SA_UNIT(unit) SAMINOR(0, unit, 0, 0) 200 201 #define SA_NUM_MODES 4 202 203 struct sa_softc { 204 sa_state state; 205 sa_flags flags; 206 sa_quirks quirks; 207 struct bio_queue_head bio_queue; 208 int queue_count; 209 struct devstat device_stats; 210 int blk_gran; 211 int blk_mask; 212 int blk_shift; 213 u_int32_t max_blk; 214 u_int32_t min_blk; 215 u_int32_t comp_algorithm; 216 u_int32_t saved_comp_algorithm; 217 u_int32_t media_blksize; 218 u_int32_t last_media_blksize; 219 u_int32_t media_numblks; 220 u_int8_t media_density; 221 u_int8_t speed; 222 u_int8_t scsi_rev; 223 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 224 int buffer_mode; 225 int filemarks; 226 union ccb saved_ccb; 227 int last_resid_was_io; 228 229 /* 230 * Relative to BOT Location. 231 */ 232 daddr_t fileno; 233 daddr_t blkno; 234 235 /* 236 * Latched Error Info 237 */ 238 struct { 239 struct scsi_sense_data _last_io_sense; 240 u_int32_t _last_io_resid; 241 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 242 struct scsi_sense_data _last_ctl_sense; 243 u_int32_t _last_ctl_resid; 244 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 245 #define last_io_sense errinfo._last_io_sense 246 #define last_io_resid errinfo._last_io_resid 247 #define last_io_cdb errinfo._last_io_cdb 248 #define last_ctl_sense errinfo._last_ctl_sense 249 #define last_ctl_resid errinfo._last_ctl_resid 250 #define last_ctl_cdb errinfo._last_ctl_cdb 251 } errinfo; 252 /* 253 * Misc other flags/state 254 */ 255 u_int32_t 256 : 29, 257 open_rdonly : 1, /* open read-only */ 258 open_pending_mount : 1, /* open pending mount */ 259 ctrl_mode : 1; /* control device open */ 260 }; 261 262 struct sa_quirk_entry { 263 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 264 sa_quirks quirks; /* specific quirk type */ 265 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 266 }; 267 268 static struct sa_quirk_entry sa_quirk_table[] = 269 { 270 { 271 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 272 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 273 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 274 }, 275 { 276 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 277 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 278 }, 279 { 280 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 281 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 282 }, 283 { 284 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 285 "Python*", "*"}, SA_QUIRK_NODREAD, 0 286 }, 287 { 288 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 289 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 290 }, 291 { 292 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 293 "VIPER 2525 25462", "-011"}, 294 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 295 }, 296 { 297 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 298 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 299 }, 300 #if 0 301 { 302 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 303 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 304 }, 305 #endif 306 { 307 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 308 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 309 }, 310 { 311 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 312 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 313 }, 314 { 315 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 316 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 317 }, 318 { 319 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 320 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 321 }, 322 { 323 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 324 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 325 }, 326 { 327 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 328 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 329 }, 330 { /* jreynold@primenet.com */ 331 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 332 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 333 }, 334 { /* mike@sentex.net */ 335 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 336 "STT20000*", "*"}, SA_QUIRK_1FM, 0 337 }, 338 { 339 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 340 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 341 }, 342 { 343 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 344 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 345 }, 346 { 347 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 348 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 349 }, 350 { 351 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 352 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 353 }, 354 { 355 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 356 " SLR*", "*"}, SA_QUIRK_1FM, 0 357 }, 358 { 359 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 360 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 361 }, 362 { 363 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 364 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 365 } 366 }; 367 368 static d_open_t saopen; 369 static d_close_t saclose; 370 static d_strategy_t sastrategy; 371 static d_ioctl_t saioctl; 372 static periph_init_t sainit; 373 static periph_ctor_t saregister; 374 static periph_oninv_t saoninvalidate; 375 static periph_dtor_t sacleanup; 376 static periph_start_t sastart; 377 static void saasync(void *callback_arg, u_int32_t code, 378 struct cam_path *path, void *arg); 379 static void sadone(struct cam_periph *periph, 380 union ccb *start_ccb); 381 static int saerror(union ccb *ccb, u_int32_t cam_flags, 382 u_int32_t sense_flags); 383 static int samarkswanted(struct cam_periph *); 384 static int sacheckeod(struct cam_periph *periph); 385 static int sagetparams(struct cam_periph *periph, 386 sa_params params_to_get, 387 u_int32_t *blocksize, u_int8_t *density, 388 u_int32_t *numblocks, int *buff_mode, 389 u_int8_t *write_protect, u_int8_t *speed, 390 int *comp_supported, int *comp_enabled, 391 u_int32_t *comp_algorithm, 392 sa_comp_t *comp_page); 393 static int sasetparams(struct cam_periph *periph, 394 sa_params params_to_set, 395 u_int32_t blocksize, u_int8_t density, 396 u_int32_t comp_algorithm, 397 u_int32_t sense_flags); 398 static void saprevent(struct cam_periph *periph, int action); 399 static int sarewind(struct cam_periph *periph); 400 static int saspace(struct cam_periph *periph, int count, 401 scsi_space_code code); 402 static int samount(struct cam_periph *, int, cdev_t); 403 static int saretension(struct cam_periph *periph); 404 static int sareservereleaseunit(struct cam_periph *periph, 405 int reserve); 406 static int saloadunload(struct cam_periph *periph, int load); 407 static int saerase(struct cam_periph *periph, int longerase); 408 static int sawritefilemarks(struct cam_periph *periph, 409 int nmarks, int setmarks); 410 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 411 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 412 413 414 static struct periph_driver sadriver = 415 { 416 sainit, "sa", 417 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 418 }; 419 420 PERIPHDRIVER_DECLARE(sa, sadriver); 421 422 /* For 2.2-stable support */ 423 #ifndef D_TAPE 424 #define D_TAPE 0 425 #endif 426 427 static struct dev_ops sa_ops = { 428 { "sa", 0, D_TAPE }, 429 .d_open = saopen, 430 .d_close = saclose, 431 .d_read = physread, 432 .d_write = physwrite, 433 .d_ioctl = saioctl, 434 .d_strategy = sastrategy, 435 }; 436 437 static struct extend_array *saperiphs; 438 439 static int 440 saopen(struct dev_open_args *ap) 441 { 442 cdev_t dev = ap->a_head.a_dev; 443 struct cam_periph *periph; 444 struct sa_softc *softc; 445 int unit; 446 int error; 447 448 unit = SAUNIT(dev); 449 450 periph = cam_extend_get(saperiphs, unit); 451 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 452 return (ENXIO); 453 } 454 455 cam_periph_lock(periph); 456 457 softc = (struct sa_softc *)periph->softc; 458 459 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 460 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 461 462 if (SA_IS_CTRL(dev)) { 463 softc->ctrl_mode = 1; 464 cam_periph_unlock(periph); 465 return (0); 466 } 467 468 if ((error = cam_periph_hold(periph, PCATCH)) != 0) { 469 cam_periph_unlock(periph); 470 cam_periph_release(periph); 471 return (error); 472 } 473 474 if (softc->flags & SA_FLAG_OPEN) { 475 error = EBUSY; 476 } else if (softc->flags & SA_FLAG_INVALID) { 477 error = ENXIO; 478 } else { 479 /* 480 * Preserve whether this is a read_only open. 481 */ 482 softc->open_rdonly = (ap->a_oflags & O_RDWR) == O_RDONLY; 483 484 /* 485 * The function samount ensures media is loaded and ready. 486 * It also does a device RESERVE if the tape isn't yet mounted. 487 * 488 * If the mount fails and this was a non-blocking open, 489 * make this a 'open_pending_mount' action. 490 */ 491 error = samount(periph, ap->a_oflags, dev); 492 if (error && (ap->a_oflags & O_NONBLOCK)) { 493 softc->flags |= SA_FLAG_OPEN; 494 softc->open_pending_mount = 1; 495 cam_periph_unhold(periph, 1); 496 return (0); 497 } 498 } 499 500 if (error) { 501 cam_periph_unhold(periph, 1); 502 cam_periph_release(periph); 503 return (error); 504 } 505 506 saprevent(periph, PR_PREVENT); 507 softc->flags |= SA_FLAG_OPEN; 508 509 cam_periph_unhold(periph, 1); 510 return (error); 511 } 512 513 static int 514 saclose(struct dev_close_args *ap) 515 { 516 cdev_t dev = ap->a_head.a_dev; 517 struct cam_periph *periph; 518 struct sa_softc *softc; 519 int unit, mode, error, writing, tmp; 520 int closedbits = SA_FLAG_OPEN; 521 522 unit = SAUNIT(dev); 523 mode = SAMODE(dev); 524 periph = cam_extend_get(saperiphs, unit); 525 if (periph == NULL) 526 return (ENXIO); 527 528 cam_periph_lock(periph); 529 530 softc = (struct sa_softc *)periph->softc; 531 532 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 533 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 534 535 536 softc->open_rdonly = 0; 537 if (SA_IS_CTRL(dev)) { 538 softc->ctrl_mode = 0; 539 cam_periph_unlock(periph); 540 cam_periph_release(periph); 541 return (0); 542 } 543 544 if (softc->open_pending_mount) { 545 softc->flags &= ~SA_FLAG_OPEN; 546 softc->open_pending_mount = 0; 547 cam_periph_unlock(periph); 548 cam_periph_release(periph); 549 return (0); 550 } 551 552 if ((error = cam_periph_hold(periph, 0)) != 0) { 553 cam_periph_unlock(periph); 554 return (error); 555 } 556 557 /* 558 * Were we writing the tape? 559 */ 560 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 561 562 /* 563 * See whether or not we need to write filemarks. If this 564 * fails, we probably have to assume we've lost tape 565 * position. 566 */ 567 error = sacheckeod(periph); 568 if (error) { 569 xpt_print(periph->path, 570 "failed to write terminating filemark(s)\n"); 571 softc->flags |= SA_FLAG_TAPE_FROZEN; 572 } 573 574 /* 575 * Whatever we end up doing, allow users to eject tapes from here on. 576 */ 577 saprevent(periph, PR_ALLOW); 578 579 /* 580 * Decide how to end... 581 */ 582 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 583 closedbits |= SA_FLAG_TAPE_FROZEN; 584 } else switch (mode) { 585 case SA_MODE_OFFLINE: 586 /* 587 * An 'offline' close is an unconditional release of 588 * frozen && mount conditions, irrespective of whether 589 * these operations succeeded. The reason for this is 590 * to allow at least some kind of programmatic way 591 * around our state getting all fouled up. If somebody 592 * issues an 'offline' command, that will be allowed 593 * to clear state. 594 */ 595 sarewind(periph); 596 saloadunload(periph, FALSE); 597 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 598 break; 599 case SA_MODE_REWIND: 600 /* 601 * If the rewind fails, return an error- if anyone cares, 602 * but not overwriting any previous error. 603 * 604 * We don't clear the notion of mounted here, but we do 605 * clear the notion of frozen if we successfully rewound. 606 */ 607 tmp = sarewind(periph); 608 if (tmp) { 609 if (error != 0) 610 error = tmp; 611 } else { 612 closedbits |= SA_FLAG_TAPE_FROZEN; 613 } 614 break; 615 case SA_MODE_NOREWIND: 616 /* 617 * If we're not rewinding/unloading the tape, find out 618 * whether we need to back up over one of two filemarks 619 * we wrote (if we wrote two filemarks) so that appends 620 * from this point on will be sane. 621 */ 622 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 623 tmp = saspace(periph, -1, SS_FILEMARKS); 624 if (tmp) { 625 xpt_print(periph->path, "unable to backspace " 626 "over one of double filemarks at end of " 627 "tape\n"); 628 xpt_print(periph->path, "it is possible that " 629 "this device needs a SA_QUIRK_1FM quirk set" 630 "for it\n"); 631 softc->flags |= SA_FLAG_TAPE_FROZEN; 632 } 633 } 634 break; 635 default: 636 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 637 /* NOTREACHED */ 638 break; 639 } 640 641 /* 642 * We wish to note here that there are no more filemarks to be written. 643 */ 644 softc->filemarks = 0; 645 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 646 647 /* 648 * And we are no longer open for business. 649 */ 650 softc->flags &= ~closedbits; 651 652 /* 653 * Inform users if tape state if frozen.... 654 */ 655 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 656 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 657 "REWIND or MTEOM command to clear this state.\n"); 658 } 659 660 /* release the device if it is no longer mounted */ 661 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 662 sareservereleaseunit(periph, FALSE); 663 664 cam_periph_unhold(periph, 1); 665 cam_periph_release(periph); 666 667 return (error); 668 } 669 670 /* 671 * Actually translate the requested transfer into one the physical driver 672 * can understand. The transfer is described by a buf and will include 673 * only one physical transfer. 674 */ 675 static int 676 sastrategy(struct dev_strategy_args *ap) 677 { 678 cdev_t dev = ap->a_head.a_dev; 679 struct bio *bio = ap->a_bio; 680 struct buf *bp = bio->bio_buf; 681 struct cam_periph *periph; 682 struct sa_softc *softc; 683 u_int unit; 684 685 if (SA_IS_CTRL(dev)) { 686 bp->b_error = EINVAL; 687 goto bad; 688 } 689 unit = SAUNIT(dev); 690 periph = cam_extend_get(saperiphs, unit); 691 if (periph == NULL) { 692 bp->b_error = ENXIO; 693 goto bad; 694 } 695 cam_periph_lock(periph); 696 697 softc = (struct sa_softc *)periph->softc; 698 699 if (softc->flags & SA_FLAG_INVALID) { 700 cam_periph_unlock(periph); 701 bp->b_error = ENXIO; 702 goto bad; 703 } 704 705 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 706 cam_periph_unlock(periph); 707 bp->b_error = EPERM; 708 goto bad; 709 } 710 711 /* 712 * This should actually never occur as the write(2) 713 * system call traps attempts to write to a read-only 714 * file descriptor. 715 */ 716 if (bp->b_cmd == BUF_CMD_WRITE && softc->open_rdonly) { 717 cam_periph_unlock(periph); 718 bp->b_error = EBADF; 719 goto bad; 720 } 721 722 if (softc->open_pending_mount) { 723 int error = samount(periph, 0, dev); 724 if (error) { 725 cam_periph_unlock(periph); 726 bp->b_error = ENXIO; 727 goto bad; 728 } 729 saprevent(periph, PR_PREVENT); 730 softc->open_pending_mount = 0; 731 } 732 733 /* 734 * If it's a null transfer, return immediately 735 */ 736 if (bp->b_bcount == 0) { 737 cam_periph_unlock(periph); 738 goto done; 739 } 740 741 /* valid request? */ 742 if (softc->flags & SA_FLAG_FIXED) { 743 /* 744 * Fixed block device. The byte count must 745 * be a multiple of our block size. 746 */ 747 if (((softc->blk_mask != ~0) && 748 ((bp->b_bcount & softc->blk_mask) != 0)) || 749 ((softc->blk_mask == ~0) && 750 ((bp->b_bcount % softc->min_blk) != 0))) { 751 xpt_print(periph->path, "Invalid request. Fixed block " 752 "device requests must be a multiple of %d bytes\n", 753 softc->min_blk); 754 cam_periph_unlock(periph); 755 bp->b_error = EINVAL; 756 goto bad; 757 } 758 } else if ((bp->b_bcount > softc->max_blk) || 759 (bp->b_bcount < softc->min_blk) || 760 (bp->b_bcount & softc->blk_mask) != 0) { 761 762 xpt_print_path(periph->path); 763 kprintf("Invalid request. Variable block " 764 "device requests must be "); 765 if (softc->blk_mask != 0) { 766 kprintf("a multiple of %d ", (0x1 << softc->blk_gran)); 767 } 768 kprintf("between %d and %d bytes\n", softc->min_blk, 769 softc->max_blk); 770 cam_periph_unlock(periph); 771 bp->b_error = EINVAL; 772 goto bad; 773 } 774 775 /* 776 * Place it at the end of the queue. 777 */ 778 bioq_insert_tail(&softc->bio_queue, bio); 779 softc->queue_count++; 780 #if 0 781 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 782 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 783 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 784 (bp->bio_cmd == BIO_READ)? "read" : "write")); 785 #endif 786 if (softc->queue_count > 1) { 787 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 788 ("sastrategy: queue count now %d\n", softc->queue_count)); 789 } 790 791 /* 792 * Schedule ourselves for performing the work. 793 */ 794 xpt_schedule(periph, 1); 795 cam_periph_unlock(periph); 796 797 return(0); 798 bad: 799 bp->b_flags |= B_ERROR; 800 done: 801 802 /* 803 * Correctly set the buf to indicate a completed xfer 804 */ 805 bp->b_resid = bp->b_bcount; 806 biodone(bio); 807 return(0); 808 } 809 810 811 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 812 if (softc->open_pending_mount) { \ 813 error = samount(periph, 0, dev); \ 814 if (error) { \ 815 break; \ 816 } \ 817 saprevent(periph, PR_PREVENT); \ 818 softc->open_pending_mount = 0; \ 819 } 820 821 static int 822 saioctl(struct dev_ioctl_args *ap) 823 { 824 cdev_t dev = ap->a_head.a_dev; 825 caddr_t addr = ap->a_data; 826 struct cam_periph *periph; 827 struct sa_softc *softc; 828 scsi_space_code spaceop; 829 int didholdperiph = 0; 830 int unit; 831 int mode; 832 int error = 0; 833 834 unit = SAUNIT(dev); 835 mode = SAMODE(dev); 836 error = 0; /* shut up gcc */ 837 spaceop = 0; /* shut up gcc */ 838 839 periph = cam_extend_get(saperiphs, unit); 840 if (periph == NULL) 841 return (ENXIO); 842 843 cam_periph_lock(periph); 844 softc = (struct sa_softc *)periph->softc; 845 846 /* 847 * Check for control mode accesses. We allow MTIOCGET and 848 * MTIOCERRSTAT (but need to be the only one open in order 849 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 850 * and MTCOMP (but need to be the only one accessing this 851 * device to run those). 852 */ 853 854 if (SA_IS_CTRL(dev)) { 855 switch (ap->a_cmd) { 856 case MTIOCGETEOTMODEL: 857 case MTIOCGET: 858 break; 859 case MTIOCERRSTAT: 860 /* 861 * If the periph isn't already locked, lock it 862 * so our MTIOCERRSTAT can reset latched error stats. 863 * 864 * If the periph is already locked, skip it because 865 * we're just getting status and it'll be up to the 866 * other thread that has this device open to do 867 * an MTIOCERRSTAT that would clear latched status. 868 */ 869 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 870 error = cam_periph_hold(periph, PCATCH); 871 if (error != 0) { 872 return (error); 873 } 874 didholdperiph = 1; 875 } 876 break; 877 878 case MTIOCTOP: 879 { 880 struct mtop *mt = (struct mtop *) addr; 881 882 /* 883 * Check to make sure it's an OP we can perform 884 * with no media inserted. 885 */ 886 switch (mt->mt_op) { 887 case MTSETBSIZ: 888 case MTSETDNSTY: 889 case MTCOMP: 890 mt = NULL; 891 /* FALLTHROUGH */ 892 default: 893 break; 894 } 895 if (mt != NULL) { 896 break; 897 } 898 /* FALLTHROUGH */ 899 } 900 case MTIOCSETEOTMODEL: 901 /* 902 * We need to acquire the peripheral here rather 903 * than at open time because we are sharing writable 904 * access to data structures. 905 */ 906 error = cam_periph_hold(periph, PCATCH); 907 if (error != 0) { 908 return (error); 909 } 910 didholdperiph = 1; 911 break; 912 913 default: 914 return (EINVAL); 915 } 916 } 917 918 /* 919 * Find the device that the user is talking about 920 */ 921 switch (ap->a_cmd) { 922 case MTIOCGET: 923 { 924 struct mtget *g = (struct mtget *)addr; 925 926 /* 927 * If this isn't the control mode device, actually go out 928 * and ask the drive again what it's set to. 929 */ 930 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 931 u_int8_t write_protect = 0; /* silence gcc */ 932 int comp_enabled = 0; /* silence gcc */ 933 int comp_supported = 0; /* silence gcc */ 934 935 error = sagetparams(periph, SA_PARAM_ALL, 936 &softc->media_blksize, &softc->media_density, 937 &softc->media_numblks, &softc->buffer_mode, 938 &write_protect, &softc->speed, &comp_supported, 939 &comp_enabled, &softc->comp_algorithm, NULL); 940 if (error) 941 break; 942 if (write_protect) 943 softc->flags |= SA_FLAG_TAPE_WP; 944 else 945 softc->flags &= ~SA_FLAG_TAPE_WP; 946 softc->flags &= ~(SA_FLAG_COMP_SUPP| 947 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 948 if (comp_supported) { 949 if (softc->saved_comp_algorithm == 0) 950 softc->saved_comp_algorithm = 951 softc->comp_algorithm; 952 softc->flags |= SA_FLAG_COMP_SUPP; 953 if (comp_enabled) 954 softc->flags |= SA_FLAG_COMP_ENABLED; 955 } else 956 softc->flags |= SA_FLAG_COMP_UNSUPP; 957 } 958 bzero(g, sizeof(struct mtget)); 959 g->mt_type = MT_ISAR; 960 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 961 g->mt_comp = MT_COMP_UNSUPP; 962 g->mt_comp0 = MT_COMP_UNSUPP; 963 g->mt_comp1 = MT_COMP_UNSUPP; 964 g->mt_comp2 = MT_COMP_UNSUPP; 965 g->mt_comp3 = MT_COMP_UNSUPP; 966 } else { 967 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 968 g->mt_comp = MT_COMP_DISABLED; 969 } else { 970 g->mt_comp = softc->comp_algorithm; 971 } 972 g->mt_comp0 = softc->comp_algorithm; 973 g->mt_comp1 = softc->comp_algorithm; 974 g->mt_comp2 = softc->comp_algorithm; 975 g->mt_comp3 = softc->comp_algorithm; 976 } 977 g->mt_density = softc->media_density; 978 g->mt_density0 = softc->media_density; 979 g->mt_density1 = softc->media_density; 980 g->mt_density2 = softc->media_density; 981 g->mt_density3 = softc->media_density; 982 g->mt_blksiz = softc->media_blksize; 983 g->mt_blksiz0 = softc->media_blksize; 984 g->mt_blksiz1 = softc->media_blksize; 985 g->mt_blksiz2 = softc->media_blksize; 986 g->mt_blksiz3 = softc->media_blksize; 987 g->mt_fileno = softc->fileno; 988 g->mt_blkno = softc->blkno; 989 g->mt_dsreg = (short) softc->dsreg; 990 /* 991 * Yes, we know that this is likely to overflow 992 */ 993 if (softc->last_resid_was_io) { 994 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 995 if (SA_IS_CTRL(dev) == 0 || didholdperiph) { 996 softc->last_io_resid = 0; 997 } 998 } 999 } else { 1000 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1001 if (SA_IS_CTRL(dev) == 0 || didholdperiph) { 1002 softc->last_ctl_resid = 0; 1003 } 1004 } 1005 } 1006 error = 0; 1007 break; 1008 } 1009 case MTIOCERRSTAT: 1010 { 1011 struct scsi_tape_errors *sep = 1012 &((union mterrstat *)addr)->scsi_errstat; 1013 1014 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1015 ("saioctl: MTIOCERRSTAT\n")); 1016 1017 bzero(sep, sizeof(*sep)); 1018 sep->io_resid = softc->last_io_resid; 1019 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1020 sizeof (sep->io_sense)); 1021 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1022 sizeof (sep->io_cdb)); 1023 sep->ctl_resid = softc->last_ctl_resid; 1024 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1025 sizeof (sep->ctl_sense)); 1026 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1027 sizeof (sep->ctl_cdb)); 1028 1029 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1030 didholdperiph) 1031 bzero((caddr_t) &softc->errinfo, 1032 sizeof (softc->errinfo)); 1033 error = 0; 1034 break; 1035 } 1036 case MTIOCTOP: 1037 { 1038 struct mtop *mt; 1039 int count; 1040 1041 PENDING_MOUNT_CHECK(softc, periph, dev); 1042 1043 mt = (struct mtop *)addr; 1044 1045 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1046 ("saioctl: op=0x%x count=0x%x\n", 1047 mt->mt_op, mt->mt_count)); 1048 1049 count = mt->mt_count; 1050 switch (mt->mt_op) { 1051 case MTWEOF: /* write an end-of-file marker */ 1052 /* 1053 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1054 * flag because by keeping track of filemarks 1055 * we have last written we know ehether or not 1056 * we need to write more when we close the device. 1057 */ 1058 error = sawritefilemarks(periph, count, FALSE); 1059 break; 1060 case MTWSS: /* write a setmark */ 1061 error = sawritefilemarks(periph, count, TRUE); 1062 break; 1063 case MTBSR: /* backward space record */ 1064 case MTFSR: /* forward space record */ 1065 case MTBSF: /* backward space file */ 1066 case MTFSF: /* forward space file */ 1067 case MTBSS: /* backward space setmark */ 1068 case MTFSS: /* forward space setmark */ 1069 case MTEOD: /* space to end of recorded medium */ 1070 { 1071 int nmarks; 1072 1073 spaceop = SS_FILEMARKS; 1074 nmarks = softc->filemarks; 1075 error = sacheckeod(periph); 1076 if (error) { 1077 xpt_print(periph->path, 1078 "EOD check prior to spacing failed\n"); 1079 softc->flags |= SA_FLAG_EIO_PENDING; 1080 break; 1081 } 1082 nmarks -= softc->filemarks; 1083 switch(mt->mt_op) { 1084 case MTBSR: 1085 count = -count; 1086 /* FALLTHROUGH */ 1087 case MTFSR: 1088 spaceop = SS_BLOCKS; 1089 break; 1090 case MTBSF: 1091 count = -count; 1092 /* FALLTHROUGH */ 1093 case MTFSF: 1094 break; 1095 case MTBSS: 1096 count = -count; 1097 /* FALLTHROUGH */ 1098 case MTFSS: 1099 spaceop = SS_SETMARKS; 1100 break; 1101 case MTEOD: 1102 spaceop = SS_EOD; 1103 count = 0; 1104 nmarks = 0; 1105 break; 1106 default: 1107 error = EINVAL; 1108 break; 1109 } 1110 if (error) 1111 break; 1112 1113 nmarks = softc->filemarks; 1114 /* 1115 * XXX: Why are we checking again? 1116 */ 1117 error = sacheckeod(periph); 1118 if (error) 1119 break; 1120 nmarks -= softc->filemarks; 1121 error = saspace(periph, count - nmarks, spaceop); 1122 /* 1123 * At this point, clear that we've written the tape 1124 * and that we've written any filemarks. We really 1125 * don't know what the applications wishes to do next- 1126 * the sacheckeod's will make sure we terminated the 1127 * tape correctly if we'd been writing, but the next 1128 * action the user application takes will set again 1129 * whether we need to write filemarks. 1130 */ 1131 softc->flags &= 1132 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1133 softc->filemarks = 0; 1134 break; 1135 } 1136 case MTREW: /* rewind */ 1137 PENDING_MOUNT_CHECK(softc, periph, dev); 1138 sacheckeod(periph); 1139 error = sarewind(periph); 1140 /* see above */ 1141 softc->flags &= 1142 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1143 softc->flags &= ~SA_FLAG_ERR_PENDING; 1144 softc->filemarks = 0; 1145 break; 1146 case MTERASE: /* erase */ 1147 PENDING_MOUNT_CHECK(softc, periph, dev); 1148 error = saerase(periph, count); 1149 softc->flags &= 1150 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1151 softc->flags &= ~SA_FLAG_ERR_PENDING; 1152 break; 1153 case MTRETENS: /* re-tension tape */ 1154 PENDING_MOUNT_CHECK(softc, periph, dev); 1155 error = saretension(periph); 1156 softc->flags &= 1157 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1158 softc->flags &= ~SA_FLAG_ERR_PENDING; 1159 break; 1160 case MTOFFL: /* rewind and put the drive offline */ 1161 1162 PENDING_MOUNT_CHECK(softc, periph, dev); 1163 1164 sacheckeod(periph); 1165 /* see above */ 1166 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1167 softc->filemarks = 0; 1168 1169 error = sarewind(periph); 1170 /* clear the frozen flag anyway */ 1171 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1172 1173 /* 1174 * Be sure to allow media removal before ejecting. 1175 */ 1176 1177 saprevent(periph, PR_ALLOW); 1178 if (error == 0) { 1179 error = saloadunload(periph, FALSE); 1180 if (error == 0) { 1181 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1182 } 1183 } 1184 break; 1185 1186 case MTNOP: /* no operation, sets status only */ 1187 case MTCACHE: /* enable controller cache */ 1188 case MTNOCACHE: /* disable controller cache */ 1189 error = 0; 1190 break; 1191 1192 case MTSETBSIZ: /* Set block size for device */ 1193 1194 PENDING_MOUNT_CHECK(softc, periph, dev); 1195 1196 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1197 0, 0, 0); 1198 if (error == 0) { 1199 softc->last_media_blksize = 1200 softc->media_blksize; 1201 softc->media_blksize = count; 1202 if (count) { 1203 softc->flags |= SA_FLAG_FIXED; 1204 if (powerof2(count)) { 1205 softc->blk_shift = 1206 ffs(count) - 1; 1207 softc->blk_mask = count - 1; 1208 } else { 1209 softc->blk_mask = ~0; 1210 softc->blk_shift = 0; 1211 } 1212 /* 1213 * Make the user's desire 'persistent'. 1214 */ 1215 softc->quirks &= ~SA_QUIRK_VARIABLE; 1216 softc->quirks |= SA_QUIRK_FIXED; 1217 } else { 1218 softc->flags &= ~SA_FLAG_FIXED; 1219 if (softc->max_blk == 0) { 1220 softc->max_blk = ~0; 1221 } 1222 softc->blk_shift = 0; 1223 if (softc->blk_gran != 0) { 1224 softc->blk_mask = 1225 softc->blk_gran - 1; 1226 } else { 1227 softc->blk_mask = 0; 1228 } 1229 /* 1230 * Make the user's desire 'persistent'. 1231 */ 1232 softc->quirks |= SA_QUIRK_VARIABLE; 1233 softc->quirks &= ~SA_QUIRK_FIXED; 1234 } 1235 } 1236 break; 1237 case MTSETDNSTY: /* Set density for device and mode */ 1238 PENDING_MOUNT_CHECK(softc, periph, dev); 1239 1240 if (count > UCHAR_MAX) { 1241 error = EINVAL; 1242 break; 1243 } else { 1244 error = sasetparams(periph, SA_PARAM_DENSITY, 1245 0, count, 0, 0); 1246 } 1247 break; 1248 case MTCOMP: /* enable compression */ 1249 PENDING_MOUNT_CHECK(softc, periph, dev); 1250 /* 1251 * Some devices don't support compression, and 1252 * don't like it if you ask them for the 1253 * compression page. 1254 */ 1255 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1256 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1257 error = ENODEV; 1258 break; 1259 } 1260 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1261 0, 0, count, SF_NO_PRINT); 1262 break; 1263 default: 1264 error = EINVAL; 1265 } 1266 break; 1267 } 1268 case MTIOCIEOT: 1269 case MTIOCEEOT: 1270 error = 0; 1271 break; 1272 case MTIOCRDSPOS: 1273 PENDING_MOUNT_CHECK(softc, periph, dev); 1274 error = sardpos(periph, 0, (u_int32_t *) addr); 1275 break; 1276 case MTIOCRDHPOS: 1277 PENDING_MOUNT_CHECK(softc, periph, dev); 1278 error = sardpos(periph, 1, (u_int32_t *) addr); 1279 break; 1280 case MTIOCSLOCATE: 1281 PENDING_MOUNT_CHECK(softc, periph, dev); 1282 error = sasetpos(periph, 0, (u_int32_t *) addr); 1283 break; 1284 case MTIOCHLOCATE: 1285 PENDING_MOUNT_CHECK(softc, periph, dev); 1286 error = sasetpos(periph, 1, (u_int32_t *) addr); 1287 break; 1288 case MTIOCGETEOTMODEL: 1289 error = 0; 1290 if (softc->quirks & SA_QUIRK_1FM) 1291 mode = 1; 1292 else 1293 mode = 2; 1294 *((u_int32_t *) addr) = mode; 1295 break; 1296 case MTIOCSETEOTMODEL: 1297 error = 0; 1298 switch (*((u_int32_t *) addr)) { 1299 case 1: 1300 softc->quirks &= ~SA_QUIRK_2FM; 1301 softc->quirks |= SA_QUIRK_1FM; 1302 break; 1303 case 2: 1304 softc->quirks &= ~SA_QUIRK_1FM; 1305 softc->quirks |= SA_QUIRK_2FM; 1306 break; 1307 default: 1308 error = EINVAL; 1309 break; 1310 } 1311 break; 1312 default: 1313 error = cam_periph_ioctl(periph, ap->a_cmd, addr, saerror); 1314 break; 1315 } 1316 1317 /* 1318 * Check to see if we cleared a frozen state 1319 */ 1320 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1321 switch(ap->a_cmd) { 1322 case MTIOCRDSPOS: 1323 case MTIOCRDHPOS: 1324 case MTIOCSLOCATE: 1325 case MTIOCHLOCATE: 1326 softc->fileno = (daddr_t) -1; 1327 softc->blkno = (daddr_t) -1; 1328 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1329 xpt_print(periph->path, 1330 "tape state now unfrozen.\n"); 1331 break; 1332 default: 1333 break; 1334 } 1335 } 1336 if (didholdperiph) 1337 cam_periph_unhold(periph, 1); 1338 else 1339 cam_periph_unlock(periph); 1340 return (error); 1341 } 1342 1343 static void 1344 sainit(void) 1345 { 1346 cam_status status; 1347 1348 /* 1349 * Create our extend array for storing the devices we attach to. 1350 */ 1351 saperiphs = cam_extend_new(); 1352 if (saperiphs == NULL) { 1353 kprintf("sa: Failed to alloc extend array!\n"); 1354 return; 1355 } 1356 1357 /* 1358 * Install a global async callback. 1359 */ 1360 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1361 1362 if (status != CAM_REQ_CMP) { 1363 kprintf("sa: Failed to attach master async callback " 1364 "due to status 0x%x!\n", status); 1365 } 1366 } 1367 1368 static void 1369 saoninvalidate(struct cam_periph *periph) 1370 { 1371 struct sa_softc *softc; 1372 struct buf *q_bp; 1373 struct bio *q_bio; 1374 1375 softc = (struct sa_softc *)periph->softc; 1376 1377 /* 1378 * De-register any async callbacks. 1379 */ 1380 xpt_register_async(0, saasync, periph, periph->path); 1381 1382 softc->flags |= SA_FLAG_INVALID; 1383 1384 /* 1385 * Return all queued I/O with ENXIO. 1386 * XXX Handle any transactions queued to the card 1387 * with XPT_ABORT_CCB. 1388 */ 1389 while ((q_bio = bioq_takefirst(&softc->bio_queue)) != NULL) { 1390 q_bp = q_bio->bio_buf; 1391 q_bp->b_resid = q_bp->b_bcount; 1392 q_bp->b_error = ENXIO; 1393 q_bp->b_flags |= B_ERROR; 1394 biodone(q_bio); 1395 } 1396 softc->queue_count = 0; 1397 1398 xpt_print(periph->path, "lost device\n"); 1399 1400 } 1401 1402 static void 1403 sacleanup(struct cam_periph *periph) 1404 { 1405 struct sa_softc *softc; 1406 1407 softc = (struct sa_softc *)periph->softc; 1408 1409 devstat_remove_entry(&softc->device_stats); 1410 1411 cam_extend_release(saperiphs, periph->unit_number); 1412 xpt_print(periph->path, "removing device entry\n"); 1413 dev_ops_remove_minor(&sa_ops, /*SA_UNITMASK,*/ SA_UNIT(periph->unit_number)); 1414 kfree(softc, M_SCSISA); 1415 } 1416 1417 static void 1418 saasync(void *callback_arg, u_int32_t code, 1419 struct cam_path *path, void *arg) 1420 { 1421 struct cam_periph *periph; 1422 1423 periph = (struct cam_periph *)callback_arg; 1424 switch (code) { 1425 case AC_FOUND_DEVICE: 1426 { 1427 struct ccb_getdev *cgd; 1428 cam_status status; 1429 1430 cgd = (struct ccb_getdev *)arg; 1431 if (cgd == NULL) 1432 break; 1433 1434 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1435 break; 1436 1437 /* 1438 * Allocate a peripheral instance for 1439 * this device and start the probe 1440 * process. 1441 */ 1442 status = cam_periph_alloc(saregister, saoninvalidate, 1443 sacleanup, sastart, 1444 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1445 saasync, AC_FOUND_DEVICE, cgd); 1446 1447 if (status != CAM_REQ_CMP 1448 && status != CAM_REQ_INPROG) 1449 kprintf("saasync: Unable to probe new device " 1450 "due to status 0x%x\n", status); 1451 break; 1452 } 1453 default: 1454 cam_periph_async(periph, code, path, arg); 1455 break; 1456 } 1457 } 1458 1459 static cam_status 1460 saregister(struct cam_periph *periph, void *arg) 1461 { 1462 struct sa_softc *softc; 1463 struct ccb_getdev *cgd; 1464 caddr_t match; 1465 int i; 1466 1467 cgd = (struct ccb_getdev *)arg; 1468 if (periph == NULL) { 1469 kprintf("saregister: periph was NULL!!\n"); 1470 return (CAM_REQ_CMP_ERR); 1471 } 1472 1473 if (cgd == NULL) { 1474 kprintf("saregister: no getdev CCB, can't register device\n"); 1475 return (CAM_REQ_CMP_ERR); 1476 } 1477 1478 softc = kmalloc(sizeof (*softc), M_SCSISA, M_INTWAIT | M_ZERO); 1479 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1480 softc->state = SA_STATE_NORMAL; 1481 softc->fileno = (daddr_t) -1; 1482 softc->blkno = (daddr_t) -1; 1483 1484 bioq_init(&softc->bio_queue); 1485 periph->softc = softc; 1486 cam_extend_set(saperiphs, periph->unit_number, periph); 1487 1488 /* 1489 * See if this device has any quirks. 1490 */ 1491 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1492 (caddr_t)sa_quirk_table, 1493 NELEM(sa_quirk_table), 1494 sizeof(*sa_quirk_table), scsi_inquiry_match); 1495 1496 if (match != NULL) { 1497 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1498 softc->last_media_blksize = 1499 ((struct sa_quirk_entry *)match)->prefblk; 1500 #ifdef CAMDEBUG 1501 xpt_print(periph->path, "found quirk entry %d\n", 1502 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1503 #endif 1504 } else 1505 softc->quirks = SA_QUIRK_NONE; 1506 1507 /* 1508 * The SA driver supports a blocksize, but we don't know the 1509 * blocksize until we media is inserted. So, set a flag to 1510 * indicate that the blocksize is unavailable right now. 1511 */ 1512 cam_periph_unlock(periph); 1513 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1514 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1515 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1516 1517 make_dev(&sa_ops, SAMINOR(SA_CTLDEV, 1518 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1519 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1520 1521 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1522 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1523 0660, "%s%d", periph->periph_name, periph->unit_number); 1524 1525 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1526 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 1527 0660, "n%s%d", periph->periph_name, periph->unit_number); 1528 1529 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1530 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 1531 0660, "e%s%d", periph->periph_name, periph->unit_number); 1532 1533 for (i = 0; i < SA_NUM_MODES; i++) { 1534 1535 make_dev(&sa_ops, 1536 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1537 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1538 periph->periph_name, periph->unit_number, i); 1539 1540 make_dev(&sa_ops, 1541 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1542 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1543 periph->periph_name, periph->unit_number, i); 1544 1545 1546 make_dev(&sa_ops, 1547 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1548 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1549 periph->periph_name, periph->unit_number, i); 1550 } 1551 cam_periph_lock(periph); 1552 1553 /* 1554 * Add an async callback so that we get 1555 * notified if this device goes away. 1556 */ 1557 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1558 1559 xpt_announce_periph(periph, NULL); 1560 1561 return (CAM_REQ_CMP); 1562 } 1563 1564 static void 1565 sastart(struct cam_periph *periph, union ccb *start_ccb) 1566 { 1567 struct sa_softc *softc; 1568 1569 softc = (struct sa_softc *)periph->softc; 1570 1571 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1572 1573 1574 switch (softc->state) { 1575 case SA_STATE_NORMAL: 1576 { 1577 /* Pull a buffer from the queue and get going on it */ 1578 struct buf *bp; 1579 struct bio *bio; 1580 1581 /* 1582 * See if there is a buf with work for us to do.. 1583 */ 1584 bio = bioq_first(&softc->bio_queue); 1585 if (periph->immediate_priority <= periph->pinfo.priority) { 1586 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1587 ("queuing for immediate ccb\n")); 1588 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1589 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1590 periph_links.sle); 1591 periph->immediate_priority = CAM_PRIORITY_NONE; 1592 wakeup(&periph->ccb_list); 1593 } else if (bio == NULL) { 1594 xpt_release_ccb(start_ccb); 1595 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1596 struct bio *done_bio; 1597 again: 1598 softc->queue_count--; 1599 bioq_remove(&softc->bio_queue, bio); 1600 bp = bio->bio_buf; 1601 bp->b_resid = bp->b_bcount; 1602 done_bio = bio; 1603 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1604 /* 1605 * We now just clear errors in this case 1606 * and let the residual be the notifier. 1607 */ 1608 bp->b_error = 0; 1609 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1610 /* 1611 * This can only happen if we're reading 1612 * in fixed length mode. In this case, 1613 * we dump the rest of the list the 1614 * same way. 1615 */ 1616 bp->b_error = 0; 1617 if (bioq_first(&softc->bio_queue) != NULL) { 1618 biodone(done_bio); 1619 goto again; 1620 } 1621 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1622 bp->b_error = EIO; 1623 bp->b_flags |= B_ERROR; 1624 } 1625 bio = bioq_first(&softc->bio_queue); 1626 /* 1627 * Only if we have no other buffers queued up 1628 * do we clear the pending error flag. 1629 */ 1630 if (bio == NULL) 1631 softc->flags &= ~SA_FLAG_ERR_PENDING; 1632 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1633 ("sastart- ERR_PENDING now 0x%x, bio is %sNULL, " 1634 "%d more buffers queued up\n", 1635 (softc->flags & SA_FLAG_ERR_PENDING), 1636 (bio != NULL)? "not " : " ", softc->queue_count)); 1637 xpt_release_ccb(start_ccb); 1638 biodone(done_bio); 1639 } else { 1640 u_int32_t length; 1641 1642 bioq_remove(&softc->bio_queue, bio); 1643 bp = bio->bio_buf; 1644 softc->queue_count--; 1645 1646 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1647 if (softc->blk_shift != 0) { 1648 length = 1649 bp->b_bcount >> softc->blk_shift; 1650 } else if (softc->media_blksize != 0) { 1651 length = 1652 bp->b_bcount / softc->media_blksize; 1653 } else { 1654 bp->b_error = EIO; 1655 xpt_print(periph->path, "zero blocksize" 1656 " for FIXED length writes?\n"); 1657 biodone(bio); 1658 break; 1659 } 1660 #if 0 1661 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1662 ("issuing a %d fixed record %s\n", 1663 length, (bp->bio_cmd == BIO_READ)? "read" : 1664 "write")); 1665 #endif 1666 } else { 1667 length = bp->b_bcount; 1668 #if 0 1669 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1670 ("issuing a %d variable byte %s\n", 1671 length, (bp->bio_cmd == BIO_READ)? "read" : 1672 "write")); 1673 #endif 1674 } 1675 devstat_start_transaction(&softc->device_stats); 1676 /* 1677 * Some people have theorized that we should 1678 * suppress illegal length indication if we are 1679 * running in variable block mode so that we don't 1680 * have to request sense every time our requested 1681 * block size is larger than the written block. 1682 * The residual information from the ccb allows 1683 * us to identify this situation anyway. The only 1684 * problem with this is that we will not get 1685 * information about blocks that are larger than 1686 * our read buffer unless we set the block size 1687 * in the mode page to something other than 0. 1688 * 1689 * I believe that this is a non-issue. If user apps 1690 * don't adjust their read size to match our record 1691 * size, that's just life. Anyway, the typical usage 1692 * would be to issue, e.g., 64KB reads and occasionally 1693 * have to do deal with 512 byte or 1KB intermediate 1694 * records. 1695 */ 1696 softc->dsreg = (bp->b_cmd == BUF_CMD_READ) ? 1697 MTIO_DSREG_RD : MTIO_DSREG_WR; 1698 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1699 MSG_SIMPLE_Q_TAG, (bp->b_cmd == BUF_CMD_READ) != 0, 1700 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1701 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1702 IO_TIMEOUT); 1703 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1704 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1705 start_ccb->ccb_h.ccb_bio = bio; 1706 bio = bioq_first(&softc->bio_queue); 1707 xpt_action(start_ccb); 1708 } 1709 1710 if (bio != NULL) { 1711 /* Have more work to do, so ensure we stay scheduled */ 1712 xpt_schedule(periph, 1); 1713 } 1714 break; 1715 } 1716 case SA_STATE_ABNORMAL: 1717 default: 1718 panic("state 0x%x in sastart", softc->state); 1719 break; 1720 } 1721 } 1722 1723 1724 static void 1725 sadone(struct cam_periph *periph, union ccb *done_ccb) 1726 { 1727 struct sa_softc *softc; 1728 struct ccb_scsiio *csio; 1729 1730 softc = (struct sa_softc *)periph->softc; 1731 csio = &done_ccb->csio; 1732 1733 switch (CCB_Type(csio)) { 1734 case SA_CCB_BUFFER_IO: 1735 { 1736 struct buf *bp; 1737 struct bio *bio; 1738 int error; 1739 1740 softc->dsreg = MTIO_DSREG_REST; 1741 bio = (struct bio *)done_ccb->ccb_h.ccb_bio; 1742 bp = bio->bio_buf; 1743 error = 0; 1744 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1745 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1746 /* 1747 * A retry was scheduled, so just return. 1748 */ 1749 return; 1750 } 1751 } 1752 1753 if (error == EIO) { 1754 struct buf *q_bp; 1755 struct bio *q_bio; 1756 1757 /* 1758 * Catastrophic error. Mark the tape as frozen 1759 * (we no longer know tape position). 1760 * 1761 * Return all queued I/O with EIO, and unfreeze 1762 * our queue so that future transactions that 1763 * attempt to fix this problem can get to the 1764 * device. 1765 * 1766 */ 1767 1768 softc->flags |= SA_FLAG_TAPE_FROZEN; 1769 while ((q_bio = bioq_takefirst(&softc->bio_queue)) != NULL) { 1770 q_bp = q_bio->bio_buf; 1771 q_bp->b_resid = q_bp->b_bcount; 1772 q_bp->b_error = EIO; 1773 q_bp->b_flags |= B_ERROR; 1774 biodone(q_bio); 1775 } 1776 } 1777 if (error != 0) { 1778 bp->b_resid = bp->b_bcount; 1779 bp->b_error = error; 1780 bp->b_flags |= B_ERROR; 1781 /* 1782 * In the error case, position is updated in saerror. 1783 */ 1784 } else { 1785 bp->b_resid = csio->resid; 1786 bp->b_error = 0; 1787 if (csio->resid != 0) { 1788 bp->b_flags |= B_ERROR; 1789 } 1790 if (bp->b_cmd != BUF_CMD_READ) { 1791 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1792 softc->filemarks = 0; 1793 } 1794 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1795 (softc->blkno != (daddr_t) -1)) { 1796 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1797 u_int32_t l; 1798 if (softc->blk_shift != 0) { 1799 l = bp->b_bcount >> 1800 softc->blk_shift; 1801 } else { 1802 l = bp->b_bcount / 1803 softc->media_blksize; 1804 } 1805 softc->blkno += (daddr_t) l; 1806 } else { 1807 softc->blkno++; 1808 } 1809 } 1810 } 1811 /* 1812 * If we had an error (immediate or pending), 1813 * release the device queue now. 1814 */ 1815 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1816 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1817 #ifdef CAMDEBUG 1818 if (error || bp->b_resid) { 1819 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1820 ("error %d resid %d count %d\n", error, 1821 bp->b_resid, bp->b_bcount)); 1822 } 1823 #endif 1824 devstat_end_transaction_buf(&softc->device_stats, bp); 1825 biodone(bio); 1826 break; 1827 } 1828 case SA_CCB_WAITING: 1829 { 1830 /* Caller will release the CCB */ 1831 wakeup(&done_ccb->ccb_h.cbfcnp); 1832 return; 1833 } 1834 case SA_CCB_POLLED: 1835 /* polled, caller releases ccb */ 1836 wakeup(&done_ccb->ccb_h.cbfcnp); 1837 return; 1838 } 1839 xpt_release_ccb(done_ccb); 1840 } 1841 1842 /* 1843 * Mount the tape (make sure it's ready for I/O). 1844 * 1845 * oflags can be checked for 'kind' of open (read-only check) - later 1846 * dev can be checked for a control-mode or compression open - later 1847 */ 1848 static int 1849 samount(struct cam_periph *periph, __unused int oflags, __unused cdev_t dev) 1850 { 1851 struct sa_softc *softc; 1852 union ccb *ccb; 1853 int error; 1854 1855 softc = (struct sa_softc *)periph->softc; 1856 1857 /* 1858 * This should determine if something has happend since the last 1859 * open/mount that would invalidate the mount. We do *not* want 1860 * to retry this command- we just want the status. But we only 1861 * do this if we're mounted already- if we're not mounted, 1862 * we don't care about the unit read state and can instead use 1863 * this opportunity to attempt to reserve the tape unit. 1864 */ 1865 1866 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1867 ccb = cam_periph_getccb(periph, 1); 1868 Set_CCB_Type(ccb, SA_CCB_POLLED); 1869 1870 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1871 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 1872 IO_TIMEOUT); 1873 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1874 &softc->device_stats); 1875 QFRLS(ccb); 1876 if (error == ENXIO) { 1877 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1878 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1879 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1880 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1881 &softc->device_stats); 1882 QFRLS(ccb); 1883 } else if (error) { 1884 /* 1885 * We don't need to freeze the tape because we 1886 * will now attempt to rewind/load it. 1887 */ 1888 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1889 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1890 xpt_print(periph->path, 1891 "error %d on TUR in samount\n", error); 1892 } 1893 } 1894 } else { 1895 error = sareservereleaseunit(periph, TRUE); 1896 if (error) { 1897 return (error); 1898 } 1899 ccb = cam_periph_getccb(periph, 1); 1900 Set_CCB_Type(ccb, SA_CCB_POLLED); 1901 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1902 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 1903 IO_TIMEOUT); 1904 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1905 &softc->device_stats); 1906 QFRLS(ccb); 1907 } 1908 1909 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1910 struct scsi_read_block_limits_data *rblim = NULL; 1911 int comp_enabled = 0; /* silence gcc */ 1912 int comp_supported = 0; /* silence gcc */ 1913 u_int8_t write_protect = 0; /* silence gcc */ 1914 u_int8_t guessing = 0; 1915 1916 /* 1917 * Clear out old state. 1918 */ 1919 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1920 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1921 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1922 softc->filemarks = 0; 1923 1924 /* 1925 * *Very* first off, make sure we're loaded to BOT. 1926 */ 1927 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1928 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1929 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1930 &softc->device_stats); 1931 QFRLS(ccb); 1932 1933 /* 1934 * In case this doesn't work, do a REWIND instead 1935 */ 1936 if (error) { 1937 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1938 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1939 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1940 &softc->device_stats); 1941 QFRLS(ccb); 1942 } 1943 if (error) { 1944 xpt_release_ccb(ccb); 1945 goto exit; 1946 } 1947 1948 /* 1949 * Do a dummy test read to force access to the 1950 * media so that the drive will really know what's 1951 * there. We actually don't really care what the 1952 * blocksize on tape is and don't expect to really 1953 * read a full record. 1954 */ 1955 rblim = kmalloc(8192, M_SCSISA, M_INTWAIT); 1956 1957 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1958 scsi_sa_read_write(&ccb->csio, 0, sadone, 1959 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1960 (void *) rblim, 8192, SSD_FULL_SIZE, 1961 IO_TIMEOUT); 1962 cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1963 &softc->device_stats); 1964 QFRLS(ccb); 1965 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1966 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1967 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1968 SF_NO_PRINT | SF_RETRY_UA, 1969 &softc->device_stats); 1970 QFRLS(ccb); 1971 if (error) { 1972 xpt_print(periph->path, 1973 "unable to rewind after test read\n"); 1974 xpt_release_ccb(ccb); 1975 goto exit; 1976 } 1977 } 1978 1979 /* 1980 * Next off, determine block limits. 1981 */ 1982 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1983 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1984 1985 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1986 SF_NO_PRINT | SF_RETRY_UA, &softc->device_stats); 1987 1988 QFRLS(ccb); 1989 xpt_release_ccb(ccb); 1990 1991 if (error != 0) { 1992 /* 1993 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1994 * a MANDATORY command. Anyway- it doesn't matter- 1995 * we can proceed anyway. 1996 */ 1997 softc->blk_gran = 0; 1998 softc->max_blk = ~0; 1999 softc->min_blk = 0; 2000 } else { 2001 if (softc->scsi_rev >= SCSI_REV_SPC) { 2002 softc->blk_gran = RBL_GRAN(rblim); 2003 } else { 2004 softc->blk_gran = 0; 2005 } 2006 /* 2007 * We take max_blk == min_blk to mean a default to 2008 * fixed mode- but note that whatever we get out of 2009 * sagetparams below will actually determine whether 2010 * we are actually *in* fixed mode. 2011 */ 2012 softc->max_blk = scsi_3btoul(rblim->maximum); 2013 softc->min_blk = scsi_2btoul(rblim->minimum); 2014 2015 2016 } 2017 /* 2018 * Next, perform a mode sense to determine 2019 * current density, blocksize, compression etc. 2020 */ 2021 error = sagetparams(periph, SA_PARAM_ALL, 2022 &softc->media_blksize, 2023 &softc->media_density, 2024 &softc->media_numblks, 2025 &softc->buffer_mode, &write_protect, 2026 &softc->speed, &comp_supported, 2027 &comp_enabled, &softc->comp_algorithm, 2028 NULL); 2029 2030 if (error != 0) { 2031 /* 2032 * We could work a little harder here. We could 2033 * adjust our attempts to get information. It 2034 * might be an ancient tape drive. If someone 2035 * nudges us, we'll do that. 2036 */ 2037 goto exit; 2038 } 2039 2040 /* 2041 * If no quirk has determined that this is a device that is 2042 * preferred to be in fixed or variable mode, now is the time 2043 * to find out. 2044 */ 2045 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2046 guessing = 1; 2047 /* 2048 * This could be expensive to find out. Luckily we 2049 * only need to do this once. If we start out in 2050 * 'default' mode, try and set ourselves to one 2051 * of the densities that would determine a wad 2052 * of other stuff. Go from highest to lowest. 2053 */ 2054 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2055 int i; 2056 static u_int8_t ctry[] = { 2057 SCSI_DENSITY_HALFINCH_PE, 2058 SCSI_DENSITY_HALFINCH_6250C, 2059 SCSI_DENSITY_HALFINCH_6250, 2060 SCSI_DENSITY_HALFINCH_1600, 2061 SCSI_DENSITY_HALFINCH_800, 2062 SCSI_DENSITY_QIC_4GB, 2063 SCSI_DENSITY_QIC_2GB, 2064 SCSI_DENSITY_QIC_525_320, 2065 SCSI_DENSITY_QIC_150, 2066 SCSI_DENSITY_QIC_120, 2067 SCSI_DENSITY_QIC_24, 2068 SCSI_DENSITY_QIC_11_9TRK, 2069 SCSI_DENSITY_QIC_11_4TRK, 2070 SCSI_DENSITY_QIC_1320, 2071 SCSI_DENSITY_QIC_3080, 2072 0 2073 }; 2074 for (i = 0; ctry[i]; i++) { 2075 error = sasetparams(periph, 2076 SA_PARAM_DENSITY, 0, ctry[i], 2077 0, SF_NO_PRINT); 2078 if (error == 0) { 2079 softc->media_density = ctry[i]; 2080 break; 2081 } 2082 } 2083 } 2084 switch (softc->media_density) { 2085 case SCSI_DENSITY_QIC_11_4TRK: 2086 case SCSI_DENSITY_QIC_11_9TRK: 2087 case SCSI_DENSITY_QIC_24: 2088 case SCSI_DENSITY_QIC_120: 2089 case SCSI_DENSITY_QIC_150: 2090 case SCSI_DENSITY_QIC_525_320: 2091 case SCSI_DENSITY_QIC_1320: 2092 case SCSI_DENSITY_QIC_3080: 2093 softc->quirks &= ~SA_QUIRK_2FM; 2094 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2095 softc->last_media_blksize = 512; 2096 break; 2097 case SCSI_DENSITY_QIC_4GB: 2098 case SCSI_DENSITY_QIC_2GB: 2099 softc->quirks &= ~SA_QUIRK_2FM; 2100 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2101 softc->last_media_blksize = 1024; 2102 break; 2103 default: 2104 softc->last_media_blksize = 2105 softc->media_blksize; 2106 softc->quirks |= SA_QUIRK_VARIABLE; 2107 break; 2108 } 2109 } 2110 2111 /* 2112 * If no quirk has determined that this is a device that needs 2113 * to have 2 Filemarks at EOD, now is the time to find out. 2114 */ 2115 2116 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2117 switch (softc->media_density) { 2118 case SCSI_DENSITY_HALFINCH_800: 2119 case SCSI_DENSITY_HALFINCH_1600: 2120 case SCSI_DENSITY_HALFINCH_6250: 2121 case SCSI_DENSITY_HALFINCH_6250C: 2122 case SCSI_DENSITY_HALFINCH_PE: 2123 softc->quirks &= ~SA_QUIRK_1FM; 2124 softc->quirks |= SA_QUIRK_2FM; 2125 break; 2126 default: 2127 break; 2128 } 2129 } 2130 2131 /* 2132 * Now validate that some info we got makes sense. 2133 */ 2134 if ((softc->max_blk < softc->media_blksize) || 2135 (softc->min_blk > softc->media_blksize && 2136 softc->media_blksize)) { 2137 xpt_print(periph->path, 2138 "BLOCK LIMITS (%d..%d) could not match current " 2139 "block settings (%d)- adjusting\n", softc->min_blk, 2140 softc->max_blk, softc->media_blksize); 2141 softc->max_blk = softc->min_blk = 2142 softc->media_blksize; 2143 } 2144 2145 /* 2146 * Now put ourselves into the right frame of mind based 2147 * upon quirks... 2148 */ 2149 tryagain: 2150 /* 2151 * If we want to be in FIXED mode and our current blocksize 2152 * is not equal to our last blocksize (if nonzero), try and 2153 * set ourselves to this last blocksize (as the 'preferred' 2154 * block size). The initial quirkmatch at registry sets the 2155 * initial 'last' blocksize. If, for whatever reason, this 2156 * 'last' blocksize is zero, set the blocksize to 512, 2157 * or min_blk if that's larger. 2158 */ 2159 if ((softc->quirks & SA_QUIRK_FIXED) && 2160 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2161 (softc->media_blksize != softc->last_media_blksize)) { 2162 softc->media_blksize = softc->last_media_blksize; 2163 if (softc->media_blksize == 0) { 2164 softc->media_blksize = 512; 2165 if (softc->media_blksize < softc->min_blk) { 2166 softc->media_blksize = softc->min_blk; 2167 } 2168 } 2169 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2170 softc->media_blksize, 0, 0, SF_NO_PRINT); 2171 if (error) { 2172 xpt_print(periph->path, 2173 "unable to set fixed blocksize to %d\n", 2174 softc->media_blksize); 2175 goto exit; 2176 } 2177 } 2178 2179 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2180 (softc->media_blksize != 0)) { 2181 softc->last_media_blksize = softc->media_blksize; 2182 softc->media_blksize = 0; 2183 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2184 0, 0, 0, SF_NO_PRINT); 2185 if (error) { 2186 /* 2187 * If this fails and we were guessing, just 2188 * assume that we got it wrong and go try 2189 * fixed block mode. Don't even check against 2190 * density code at this point. 2191 */ 2192 if (guessing) { 2193 softc->quirks &= ~SA_QUIRK_VARIABLE; 2194 softc->quirks |= SA_QUIRK_FIXED; 2195 if (softc->last_media_blksize == 0) 2196 softc->last_media_blksize = 512; 2197 goto tryagain; 2198 } 2199 xpt_print(periph->path, 2200 "unable to set variable blocksize\n"); 2201 goto exit; 2202 } 2203 } 2204 2205 /* 2206 * Now that we have the current block size, 2207 * set up some parameters for sastart's usage. 2208 */ 2209 if (softc->media_blksize) { 2210 softc->flags |= SA_FLAG_FIXED; 2211 if (powerof2(softc->media_blksize)) { 2212 softc->blk_shift = 2213 ffs(softc->media_blksize) - 1; 2214 softc->blk_mask = softc->media_blksize - 1; 2215 } else { 2216 softc->blk_mask = ~0; 2217 softc->blk_shift = 0; 2218 } 2219 } else { 2220 /* 2221 * The SCSI-3 spec allows 0 to mean "unspecified". 2222 * The SCSI-1 spec allows 0 to mean 'infinite'. 2223 * 2224 * Either works here. 2225 */ 2226 if (softc->max_blk == 0) { 2227 softc->max_blk = ~0; 2228 } 2229 softc->blk_shift = 0; 2230 if (softc->blk_gran != 0) { 2231 softc->blk_mask = softc->blk_gran - 1; 2232 } else { 2233 softc->blk_mask = 0; 2234 } 2235 } 2236 2237 if (write_protect) 2238 softc->flags |= SA_FLAG_TAPE_WP; 2239 2240 if (comp_supported) { 2241 if (softc->saved_comp_algorithm == 0) 2242 softc->saved_comp_algorithm = 2243 softc->comp_algorithm; 2244 softc->flags |= SA_FLAG_COMP_SUPP; 2245 if (comp_enabled) 2246 softc->flags |= SA_FLAG_COMP_ENABLED; 2247 } else 2248 softc->flags |= SA_FLAG_COMP_UNSUPP; 2249 2250 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2251 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2252 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2253 0, 0, SF_NO_PRINT); 2254 if (error == 0) { 2255 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2256 } else { 2257 xpt_print(periph->path, 2258 "unable to set buffered mode\n"); 2259 } 2260 error = 0; /* not an error */ 2261 } 2262 2263 2264 if (error == 0) { 2265 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2266 } 2267 exit: 2268 if (rblim != NULL) 2269 kfree(rblim, M_SCSISA); 2270 2271 if (error != 0) { 2272 softc->dsreg = MTIO_DSREG_NIL; 2273 } else { 2274 softc->fileno = softc->blkno = 0; 2275 softc->dsreg = MTIO_DSREG_REST; 2276 } 2277 #ifdef SA_1FM_AT_EOD 2278 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2279 softc->quirks |= SA_QUIRK_1FM; 2280 #else 2281 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2282 softc->quirks |= SA_QUIRK_2FM; 2283 #endif 2284 } else 2285 xpt_release_ccb(ccb); 2286 2287 /* 2288 * If we return an error, we're not mounted any more, 2289 * so release any device reservation. 2290 */ 2291 if (error != 0) { 2292 sareservereleaseunit(periph, FALSE); 2293 } else { 2294 /* 2295 * Clear I/O residual. 2296 */ 2297 softc->last_io_resid = 0; 2298 softc->last_ctl_resid = 0; 2299 } 2300 return (error); 2301 } 2302 2303 /* 2304 * How many filemarks do we need to write if we were to terminate the 2305 * tape session right now? Note that this can be a negative number 2306 */ 2307 2308 static int 2309 samarkswanted(struct cam_periph *periph) 2310 { 2311 int markswanted; 2312 struct sa_softc *softc; 2313 2314 softc = (struct sa_softc *)periph->softc; 2315 markswanted = 0; 2316 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2317 markswanted++; 2318 if (softc->quirks & SA_QUIRK_2FM) 2319 markswanted++; 2320 } 2321 markswanted -= softc->filemarks; 2322 return (markswanted); 2323 } 2324 2325 static int 2326 sacheckeod(struct cam_periph *periph) 2327 { 2328 int error; 2329 int markswanted; 2330 2331 markswanted = samarkswanted(periph); 2332 2333 if (markswanted > 0) { 2334 error = sawritefilemarks(periph, markswanted, FALSE); 2335 } else { 2336 error = 0; 2337 } 2338 return (error); 2339 } 2340 2341 static int 2342 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2343 { 2344 static const char *toobig = 2345 "%d-byte tape record bigger than supplied buffer\n"; 2346 struct cam_periph *periph; 2347 struct sa_softc *softc; 2348 struct ccb_scsiio *csio; 2349 struct scsi_sense_data *sense; 2350 u_int32_t resid = 0; 2351 int32_t info = 0; 2352 cam_status status; 2353 int error_code, sense_key, asc, ascq, error, aqvalid; 2354 2355 periph = xpt_path_periph(ccb->ccb_h.path); 2356 softc = (struct sa_softc *)periph->softc; 2357 csio = &ccb->csio; 2358 sense = &csio->sense_data; 2359 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2360 aqvalid = sense->extra_len >= 6; 2361 error = 0; 2362 2363 status = csio->ccb_h.status & CAM_STATUS_MASK; 2364 2365 /* 2366 * Calculate/latch up, any residuals... We do this in a funny 2-step 2367 * so we can print stuff here if we have CAM_DEBUG enabled for this 2368 * unit. 2369 */ 2370 if (status == CAM_SCSI_STATUS_ERROR) { 2371 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2372 info = (int32_t) scsi_4btoul(sense->info); 2373 resid = info; 2374 if ((softc->flags & SA_FLAG_FIXED) != 0) 2375 resid *= softc->media_blksize; 2376 } else { 2377 resid = csio->dxfer_len; 2378 info = resid; 2379 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2380 if (softc->media_blksize) 2381 info /= softc->media_blksize; 2382 } 2383 } 2384 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2385 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2386 sizeof (struct scsi_sense_data)); 2387 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2388 (int) csio->cdb_len); 2389 softc->last_io_resid = resid; 2390 softc->last_resid_was_io = 1; 2391 } else { 2392 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2393 sizeof (struct scsi_sense_data)); 2394 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2395 (int) csio->cdb_len); 2396 softc->last_ctl_resid = resid; 2397 softc->last_resid_was_io = 0; 2398 } 2399 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2400 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2401 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2402 sense_key, asc, ascq, status, 2403 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2404 } else { 2405 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2406 ("Cam Status 0x%x\n", status)); 2407 } 2408 2409 switch (status) { 2410 case CAM_REQ_CMP: 2411 return (0); 2412 case CAM_SCSI_STATUS_ERROR: 2413 /* 2414 * If a read/write command, we handle it here. 2415 */ 2416 if (CCB_Type(csio) != SA_CCB_WAITING) { 2417 break; 2418 } 2419 /* 2420 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2421 * on a non read/write command, we assume it's not an error 2422 * and propagate the residule and return. 2423 */ 2424 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2425 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2426 csio->resid = resid; 2427 QFRLS(ccb); 2428 return (0); 2429 } 2430 /* 2431 * Otherwise, we let the common code handle this. 2432 */ 2433 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2434 2435 /* 2436 * XXX: To Be Fixed 2437 * We cannot depend upon CAM honoring retry counts for these. 2438 */ 2439 case CAM_SCSI_BUS_RESET: 2440 case CAM_BDR_SENT: 2441 if (ccb->ccb_h.retry_count <= 0) { 2442 return (EIO); 2443 } 2444 /* FALLTHROUGH */ 2445 default: 2446 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2447 } 2448 2449 /* 2450 * Handle filemark, end of tape, mismatched record sizes.... 2451 * From this point out, we're only handling read/write cases. 2452 * Handle writes && reads differently. 2453 */ 2454 2455 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2456 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2457 csio->resid = resid; 2458 error = ENOSPC; 2459 } else if (sense->flags & SSD_EOM) { 2460 softc->flags |= SA_FLAG_EOM_PENDING; 2461 /* 2462 * Grotesque as it seems, the few times 2463 * I've actually seen a non-zero resid, 2464 * the tape drive actually lied and had 2465 * written all the data!. 2466 */ 2467 csio->resid = 0; 2468 } 2469 } else { 2470 csio->resid = resid; 2471 if (sense_key == SSD_KEY_BLANK_CHECK) { 2472 if (softc->quirks & SA_QUIRK_1FM) { 2473 error = 0; 2474 softc->flags |= SA_FLAG_EOM_PENDING; 2475 } else { 2476 error = EIO; 2477 } 2478 } else if (sense->flags & SSD_FILEMARK) { 2479 if (softc->flags & SA_FLAG_FIXED) { 2480 error = -1; 2481 softc->flags |= SA_FLAG_EOF_PENDING; 2482 } 2483 /* 2484 * Unconditionally, if we detected a filemark on a read, 2485 * mark that we've run moved a file ahead. 2486 */ 2487 if (softc->fileno != (daddr_t) -1) { 2488 softc->fileno++; 2489 softc->blkno = 0; 2490 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2491 } 2492 } 2493 } 2494 2495 /* 2496 * Incorrect Length usually applies to read, but can apply to writes. 2497 */ 2498 if (error == 0 && (sense->flags & SSD_ILI)) { 2499 if (info < 0) { 2500 xpt_print(csio->ccb_h.path, toobig, 2501 csio->dxfer_len - info); 2502 csio->resid = csio->dxfer_len; 2503 error = EIO; 2504 } else { 2505 csio->resid = resid; 2506 if (softc->flags & SA_FLAG_FIXED) { 2507 softc->flags |= SA_FLAG_EIO_PENDING; 2508 } 2509 /* 2510 * Bump the block number if we hadn't seen a filemark. 2511 * Do this independent of errors (we've moved anyway). 2512 */ 2513 if ((sense->flags & SSD_FILEMARK) == 0) { 2514 if (softc->blkno != (daddr_t) -1) { 2515 softc->blkno++; 2516 csio->ccb_h.ccb_pflags |= 2517 SA_POSITION_UPDATED; 2518 } 2519 } 2520 } 2521 } 2522 2523 if (error <= 0) { 2524 /* 2525 * Unfreeze the queue if frozen as we're not returning anything 2526 * to our waiters that would indicate an I/O error has occurred 2527 * (yet). 2528 */ 2529 QFRLS(ccb); 2530 error = 0; 2531 } 2532 return (error); 2533 } 2534 2535 static int 2536 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2537 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2538 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2539 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2540 sa_comp_t *tcs) 2541 { 2542 union ccb *ccb; 2543 void *mode_buffer; 2544 struct scsi_mode_header_6 *mode_hdr; 2545 struct scsi_mode_blk_desc *mode_blk; 2546 int mode_buffer_len; 2547 struct sa_softc *softc; 2548 u_int8_t cpage; 2549 int error; 2550 cam_status status; 2551 2552 softc = (struct sa_softc *)periph->softc; 2553 ccb = cam_periph_getccb(periph, 1); 2554 Set_CCB_Type(ccb, SA_CCB_POLLED); 2555 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2556 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2557 else 2558 cpage = SA_DATA_COMPRESSION_PAGE; 2559 2560 retry: 2561 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2562 2563 if (params_to_get & SA_PARAM_COMPRESSION) { 2564 if (softc->quirks & SA_QUIRK_NOCOMP) { 2565 *comp_supported = FALSE; 2566 params_to_get &= ~SA_PARAM_COMPRESSION; 2567 } else 2568 mode_buffer_len += sizeof (sa_comp_t); 2569 } 2570 2571 mode_buffer = kmalloc(mode_buffer_len, M_SCSISA, M_INTWAIT | M_ZERO); 2572 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2573 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2574 2575 /* it is safe to retry this */ 2576 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2577 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2578 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2579 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2580 2581 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2582 &softc->device_stats); 2583 QFRLS(ccb); 2584 2585 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2586 2587 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2588 /* 2589 * Hmm. Let's see if we can try another page... 2590 * If we've already done that, give up on compression 2591 * for this device and remember this for the future 2592 * and attempt the request without asking for compression 2593 * info. 2594 */ 2595 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2596 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2597 goto retry; 2598 } 2599 softc->quirks |= SA_QUIRK_NOCOMP; 2600 kfree(mode_buffer, M_SCSISA); 2601 goto retry; 2602 } else if (status == CAM_SCSI_STATUS_ERROR) { 2603 /* Tell the user about the fatal error. */ 2604 scsi_sense_print(&ccb->csio); 2605 goto sagetparamsexit; 2606 } 2607 2608 /* 2609 * If the user only wants the compression information, and 2610 * the device doesn't send back the block descriptor, it's 2611 * no big deal. If the user wants more than just 2612 * compression, though, and the device doesn't pass back the 2613 * block descriptor, we need to send another mode sense to 2614 * get the block descriptor. 2615 */ 2616 if ((mode_hdr->blk_desc_len == 0) && 2617 (params_to_get & SA_PARAM_COMPRESSION) && 2618 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2619 2620 /* 2621 * Decrease the mode buffer length by the size of 2622 * the compression page, to make sure the data 2623 * there doesn't get overwritten. 2624 */ 2625 mode_buffer_len -= sizeof (sa_comp_t); 2626 2627 /* 2628 * Now move the compression page that we presumably 2629 * got back down the memory chunk a little bit so 2630 * it doesn't get spammed. 2631 */ 2632 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2633 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2634 2635 /* 2636 * Now, we issue another mode sense and just ask 2637 * for the block descriptor, etc. 2638 */ 2639 2640 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2641 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2642 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2643 SCSIOP_TIMEOUT); 2644 2645 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2646 &softc->device_stats); 2647 QFRLS(ccb); 2648 2649 if (error != 0) 2650 goto sagetparamsexit; 2651 } 2652 2653 if (params_to_get & SA_PARAM_BLOCKSIZE) 2654 *blocksize = scsi_3btoul(mode_blk->blklen); 2655 2656 if (params_to_get & SA_PARAM_NUMBLOCKS) 2657 *numblocks = scsi_3btoul(mode_blk->nblocks); 2658 2659 if (params_to_get & SA_PARAM_BUFF_MODE) 2660 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2661 2662 if (params_to_get & SA_PARAM_DENSITY) 2663 *density = mode_blk->density; 2664 2665 if (params_to_get & SA_PARAM_WP) 2666 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2667 2668 if (params_to_get & SA_PARAM_SPEED) 2669 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2670 2671 if (params_to_get & SA_PARAM_COMPRESSION) { 2672 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2673 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2674 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2675 *comp_supported = 2676 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2677 *comp_enabled = 2678 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2679 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2680 } else { 2681 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2682 /* 2683 * We don't really know whether this device supports 2684 * Data Compression if the the algorithm field is 2685 * zero. Just say we do. 2686 */ 2687 *comp_supported = TRUE; 2688 *comp_enabled = 2689 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2690 *comp_algorithm = cp->sel_comp_alg; 2691 } 2692 if (tcs != NULL) 2693 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2694 } 2695 2696 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2697 int idx; 2698 char *xyz = mode_buffer; 2699 xpt_print_path(periph->path); 2700 kprintf("Mode Sense Data="); 2701 for (idx = 0; idx < mode_buffer_len; idx++) 2702 kprintf(" 0x%02x", xyz[idx] & 0xff); 2703 kprintf("\n"); 2704 } 2705 2706 sagetparamsexit: 2707 2708 xpt_release_ccb(ccb); 2709 kfree(mode_buffer, M_SCSISA); 2710 return (error); 2711 } 2712 2713 /* 2714 * The purpose of this function is to set one of four different parameters 2715 * for a tape drive: 2716 * - blocksize 2717 * - density 2718 * - compression / compression algorithm 2719 * - buffering mode 2720 * 2721 * The assumption is that this will be called from saioctl(), and therefore 2722 * from a process context. Thus the waiting malloc calls below. If that 2723 * assumption ever changes, the malloc calls should be changed to be 2724 * NOWAIT mallocs. 2725 * 2726 * Any or all of the four parameters may be set when this function is 2727 * called. It should handle setting more than one parameter at once. 2728 */ 2729 static int 2730 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2731 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2732 u_int32_t sense_flags) 2733 { 2734 struct sa_softc *softc; 2735 u_int32_t current_blocksize = 0;/* silence gcc */ 2736 u_int32_t current_calg; 2737 u_int8_t current_density = 0; /* silence gcc */ 2738 u_int8_t current_speed = 0; /* silence gcc */ 2739 int comp_enabled, comp_supported; 2740 void *mode_buffer; 2741 int mode_buffer_len; 2742 struct scsi_mode_header_6 *mode_hdr; 2743 struct scsi_mode_blk_desc *mode_blk; 2744 sa_comp_t *ccomp, *cpage; 2745 int buff_mode; 2746 union ccb *ccb = NULL; 2747 int error; 2748 2749 softc = (struct sa_softc *)periph->softc; 2750 2751 ccomp = kmalloc(sizeof (sa_comp_t), M_SCSISA, M_INTWAIT); 2752 2753 /* 2754 * Since it doesn't make sense to set the number of blocks, or 2755 * write protection, we won't try to get the current value. We 2756 * always want to get the blocksize, so we can set it back to the 2757 * proper value. 2758 */ 2759 error = sagetparams(periph, 2760 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2761 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2762 ¤t_speed, &comp_supported, &comp_enabled, 2763 ¤t_calg, ccomp); 2764 2765 if (error != 0) { 2766 kfree(ccomp, M_SCSISA); 2767 return (error); 2768 } 2769 2770 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2771 if (params_to_set & SA_PARAM_COMPRESSION) 2772 mode_buffer_len += sizeof (sa_comp_t); 2773 2774 mode_buffer = kmalloc(mode_buffer_len, M_SCSISA, M_INTWAIT | M_ZERO); 2775 2776 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2777 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2778 2779 ccb = cam_periph_getccb(periph, 1); 2780 Set_CCB_Type(ccb, SA_CCB_POLLED); 2781 2782 retry: 2783 2784 if (params_to_set & SA_PARAM_COMPRESSION) { 2785 if (mode_blk) { 2786 cpage = (sa_comp_t *)&mode_blk[1]; 2787 } else { 2788 cpage = (sa_comp_t *)&mode_hdr[1]; 2789 } 2790 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2791 cpage->hdr.pagecode &= ~0x80; 2792 } else 2793 cpage = NULL; 2794 2795 /* 2796 * If the caller wants us to set the blocksize, use the one they 2797 * pass in. Otherwise, use the blocksize we got back from the 2798 * mode select above. 2799 */ 2800 if (mode_blk) { 2801 if (params_to_set & SA_PARAM_BLOCKSIZE) 2802 scsi_ulto3b(blocksize, mode_blk->blklen); 2803 else 2804 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2805 2806 /* 2807 * Set density if requested, else preserve old density. 2808 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2809 * devices, else density we've latched up in our softc. 2810 */ 2811 if (params_to_set & SA_PARAM_DENSITY) { 2812 mode_blk->density = density; 2813 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2814 mode_blk->density = SCSI_SAME_DENSITY; 2815 } else { 2816 mode_blk->density = softc->media_density; 2817 } 2818 } 2819 2820 /* 2821 * For mode selects, these two fields must be zero. 2822 */ 2823 mode_hdr->data_length = 0; 2824 mode_hdr->medium_type = 0; 2825 2826 /* set the speed to the current value */ 2827 mode_hdr->dev_spec = current_speed; 2828 2829 /* if set, set single-initiator buffering mode */ 2830 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2831 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2832 } 2833 2834 if (mode_blk) 2835 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2836 else 2837 mode_hdr->blk_desc_len = 0; 2838 2839 /* 2840 * First, if the user wants us to set the compression algorithm or 2841 * just turn compression on, check to make sure that this drive 2842 * supports compression. 2843 */ 2844 if (params_to_set & SA_PARAM_COMPRESSION) { 2845 /* 2846 * If the compression algorithm is 0, disable compression. 2847 * If the compression algorithm is non-zero, enable 2848 * compression and set the compression type to the 2849 * specified compression algorithm, unless the algorithm is 2850 * MT_COMP_ENABLE. In that case, we look at the 2851 * compression algorithm that is currently set and if it is 2852 * non-zero, we leave it as-is. If it is zero, and we have 2853 * saved a compression algorithm from a time when 2854 * compression was enabled before, set the compression to 2855 * the saved value. 2856 */ 2857 switch (ccomp->hdr.pagecode & ~0x80) { 2858 case SA_DEVICE_CONFIGURATION_PAGE: 2859 { 2860 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2861 if (calg == 0) { 2862 dcp->sel_comp_alg = SA_COMP_NONE; 2863 break; 2864 } 2865 if (calg != MT_COMP_ENABLE) { 2866 dcp->sel_comp_alg = calg; 2867 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2868 softc->saved_comp_algorithm != 0) { 2869 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2870 } 2871 break; 2872 } 2873 case SA_DATA_COMPRESSION_PAGE: 2874 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2875 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2876 if (calg == 0) { 2877 /* 2878 * Disable compression, but leave the 2879 * decompression and the capability bit 2880 * alone. 2881 */ 2882 dcp->dce_and_dcc = SA_DCP_DCC; 2883 dcp->dde_and_red |= SA_DCP_DDE; 2884 break; 2885 } 2886 /* enable compression && decompression */ 2887 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2888 dcp->dde_and_red |= SA_DCP_DDE; 2889 /* 2890 * If there, use compression algorithm from caller. 2891 * Otherwise, if there's a saved compression algorithm 2892 * and there is no current algorithm, use the saved 2893 * algorithm. Else parrot back what we got and hope 2894 * for the best. 2895 */ 2896 if (calg != MT_COMP_ENABLE) { 2897 scsi_ulto4b(calg, dcp->comp_algorithm); 2898 scsi_ulto4b(calg, dcp->decomp_algorithm); 2899 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2900 softc->saved_comp_algorithm != 0) { 2901 scsi_ulto4b(softc->saved_comp_algorithm, 2902 dcp->comp_algorithm); 2903 scsi_ulto4b(softc->saved_comp_algorithm, 2904 dcp->decomp_algorithm); 2905 } 2906 break; 2907 } 2908 /* 2909 * Compression does not appear to be supported- 2910 * at least via the DATA COMPRESSION page. It 2911 * would be too much to ask us to believe that 2912 * the page itself is supported, but incorrectly 2913 * reports an ability to manipulate data compression, 2914 * so we'll assume that this device doesn't support 2915 * compression. We can just fall through for that. 2916 */ 2917 /* FALLTHROUGH */ 2918 default: 2919 /* 2920 * The drive doesn't seem to support compression, 2921 * so turn off the set compression bit. 2922 */ 2923 params_to_set &= ~SA_PARAM_COMPRESSION; 2924 xpt_print(periph->path, 2925 "device does not seem to support compression\n"); 2926 2927 /* 2928 * If that was the only thing the user wanted us to set, 2929 * clean up allocated resources and return with 2930 * 'operation not supported'. 2931 */ 2932 if (params_to_set == SA_PARAM_NONE) { 2933 kfree(mode_buffer, M_SCSISA); 2934 xpt_release_ccb(ccb); 2935 return (ENODEV); 2936 } 2937 2938 /* 2939 * That wasn't the only thing the user wanted us to set. 2940 * So, decrease the stated mode buffer length by the 2941 * size of the compression mode page. 2942 */ 2943 mode_buffer_len -= sizeof(sa_comp_t); 2944 } 2945 } 2946 2947 /* It is safe to retry this operation */ 2948 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2949 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2950 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2951 2952 error = cam_periph_runccb(ccb, saerror, 0, 2953 sense_flags, &softc->device_stats); 2954 QFRLS(ccb); 2955 2956 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2957 int idx; 2958 char *xyz = mode_buffer; 2959 xpt_print_path(periph->path); 2960 kprintf("Err%d, Mode Select Data=", error); 2961 for (idx = 0; idx < mode_buffer_len; idx++) 2962 kprintf(" 0x%02x", xyz[idx] & 0xff); 2963 kprintf("\n"); 2964 } 2965 2966 2967 if (error) { 2968 /* 2969 * If we can, try without setting density/blocksize. 2970 */ 2971 if (mode_blk) { 2972 if ((params_to_set & 2973 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2974 mode_blk = NULL; 2975 goto retry; 2976 } 2977 } else { 2978 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2979 cpage = (sa_comp_t *)&mode_blk[1]; 2980 } 2981 2982 /* 2983 * If we were setting the blocksize, and that failed, we 2984 * want to set it to its original value. If we weren't 2985 * setting the blocksize, we don't want to change it. 2986 */ 2987 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2988 2989 /* 2990 * Set density if requested, else preserve old density. 2991 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2992 * devices, else density we've latched up in our softc. 2993 */ 2994 if (params_to_set & SA_PARAM_DENSITY) { 2995 mode_blk->density = current_density; 2996 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2997 mode_blk->density = SCSI_SAME_DENSITY; 2998 } else { 2999 mode_blk->density = softc->media_density; 3000 } 3001 3002 if (params_to_set & SA_PARAM_COMPRESSION) 3003 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3004 3005 /* 3006 * The retry count is the only CCB field that might have been 3007 * changed that we care about, so reset it back to 1. 3008 */ 3009 ccb->ccb_h.retry_count = 1; 3010 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3011 &softc->device_stats); 3012 QFRLS(ccb); 3013 } 3014 3015 xpt_release_ccb(ccb); 3016 3017 if (ccomp != NULL) 3018 kfree(ccomp, M_SCSISA); 3019 3020 if (params_to_set & SA_PARAM_COMPRESSION) { 3021 if (error) { 3022 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3023 /* 3024 * Even if we get an error setting compression, 3025 * do not say that we don't support it. We could 3026 * have been wrong, or it may be media specific. 3027 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3028 */ 3029 softc->saved_comp_algorithm = softc->comp_algorithm; 3030 softc->comp_algorithm = 0; 3031 } else { 3032 softc->flags |= SA_FLAG_COMP_ENABLED; 3033 softc->comp_algorithm = calg; 3034 } 3035 } 3036 3037 kfree(mode_buffer, M_SCSISA); 3038 return (error); 3039 } 3040 3041 static void 3042 saprevent(struct cam_periph *periph, int action) 3043 { 3044 struct sa_softc *softc; 3045 union ccb *ccb; 3046 int error, sf; 3047 3048 softc = (struct sa_softc *)periph->softc; 3049 3050 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3051 return; 3052 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3053 return; 3054 3055 /* 3056 * We can be quiet about illegal requests. 3057 */ 3058 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3059 sf = 0; 3060 } else 3061 sf = SF_QUIET_IR; 3062 3063 ccb = cam_periph_getccb(periph, 1); 3064 Set_CCB_Type(ccb, SA_CCB_POLLED); 3065 3066 /* It is safe to retry this operation */ 3067 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3068 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3069 3070 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 3071 QFRLS(ccb); 3072 if (error == 0) { 3073 if (action == PR_ALLOW) 3074 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3075 else 3076 softc->flags |= SA_FLAG_TAPE_LOCKED; 3077 } 3078 3079 xpt_release_ccb(ccb); 3080 } 3081 3082 static int 3083 sarewind(struct cam_periph *periph) 3084 { 3085 union ccb *ccb; 3086 struct sa_softc *softc; 3087 int error; 3088 3089 softc = (struct sa_softc *)periph->softc; 3090 3091 ccb = cam_periph_getccb(periph, 1); 3092 Set_CCB_Type(ccb, SA_CCB_POLLED); 3093 3094 /* It is safe to retry this operation */ 3095 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3096 SSD_FULL_SIZE, REWIND_TIMEOUT); 3097 3098 softc->dsreg = MTIO_DSREG_REW; 3099 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3100 softc->dsreg = MTIO_DSREG_REST; 3101 3102 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3103 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3104 3105 xpt_release_ccb(ccb); 3106 if (error == 0) 3107 softc->fileno = softc->blkno = (daddr_t) 0; 3108 else 3109 softc->fileno = softc->blkno = (daddr_t) -1; 3110 return (error); 3111 } 3112 3113 static int 3114 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3115 { 3116 union ccb *ccb; 3117 struct sa_softc *softc; 3118 int error; 3119 3120 softc = (struct sa_softc *)periph->softc; 3121 3122 ccb = cam_periph_getccb(periph, 1); 3123 Set_CCB_Type(ccb, SA_CCB_POLLED); 3124 3125 /* This cannot be retried */ 3126 3127 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3128 SSD_FULL_SIZE, SPACE_TIMEOUT); 3129 3130 /* 3131 * Clear residual because we will be using it. 3132 */ 3133 softc->last_ctl_resid = 0; 3134 3135 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3136 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3137 softc->dsreg = MTIO_DSREG_REST; 3138 3139 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3140 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3141 3142 xpt_release_ccb(ccb); 3143 3144 /* 3145 * If a spacing operation has failed, we need to invalidate 3146 * this mount. 3147 * 3148 * If the spacing operation was setmarks or to end of recorded data, 3149 * we no longer know our relative position. 3150 * 3151 * If the spacing operations was spacing files in reverse, we 3152 * take account of the residual, but still check against less 3153 * than zero- if we've gone negative, we must have hit BOT. 3154 * 3155 * If the spacing operations was spacing records in reverse and 3156 * we have a residual, we've either hit BOT or hit a filemark. 3157 * In the former case, we know our new record number (0). In 3158 * the latter case, we have absolutely no idea what the real 3159 * record number is- we've stopped between the end of the last 3160 * record in the previous file and the filemark that stopped 3161 * our spacing backwards. 3162 */ 3163 if (error) { 3164 softc->fileno = softc->blkno = (daddr_t) -1; 3165 } else if (code == SS_SETMARKS || code == SS_EOD) { 3166 softc->fileno = softc->blkno = (daddr_t) -1; 3167 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3168 softc->fileno += (count - softc->last_ctl_resid); 3169 if (softc->fileno < 0) /* we must of hit BOT */ 3170 softc->fileno = 0; 3171 softc->blkno = 0; 3172 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3173 softc->blkno += (count - softc->last_ctl_resid); 3174 if (count < 0) { 3175 if (softc->last_ctl_resid || softc->blkno < 0) { 3176 if (softc->fileno == 0) { 3177 softc->blkno = 0; 3178 } else { 3179 softc->blkno = (daddr_t) -1; 3180 } 3181 } 3182 } 3183 } 3184 return (error); 3185 } 3186 3187 static int 3188 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3189 { 3190 union ccb *ccb; 3191 struct sa_softc *softc; 3192 int error, nwm = 0; 3193 3194 softc = (struct sa_softc *)periph->softc; 3195 if (softc->open_rdonly) 3196 return (EBADF); 3197 3198 ccb = cam_periph_getccb(periph, 1); 3199 Set_CCB_Type(ccb, SA_CCB_POLLED); 3200 3201 /* 3202 * Clear residual because we will be using it. 3203 */ 3204 softc->last_ctl_resid = 0; 3205 3206 softc->dsreg = MTIO_DSREG_FMK; 3207 /* this *must* not be retried */ 3208 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3209 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3210 softc->dsreg = MTIO_DSREG_REST; 3211 3212 3213 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3214 3215 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3216 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3217 3218 if (error == 0 && nmarks) { 3219 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3220 nwm = nmarks - softc->last_ctl_resid; 3221 softc->filemarks += nwm; 3222 } 3223 3224 xpt_release_ccb(ccb); 3225 3226 /* 3227 * Update relative positions (if we're doing that). 3228 */ 3229 if (error) { 3230 softc->fileno = softc->blkno = (daddr_t) -1; 3231 } else if (softc->fileno != (daddr_t) -1) { 3232 softc->fileno += nwm; 3233 softc->blkno = 0; 3234 } 3235 return (error); 3236 } 3237 3238 static int 3239 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3240 { 3241 struct scsi_tape_position_data loc; 3242 union ccb *ccb; 3243 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3244 int error; 3245 3246 /* 3247 * We try and flush any buffered writes here if we were writing 3248 * and we're trying to get hardware block position. It eats 3249 * up performance substantially, but I'm wary of drive firmware. 3250 * 3251 * I think that *logical* block position is probably okay- 3252 * but hardware block position might have to wait for data 3253 * to hit media to be valid. Caveat Emptor. 3254 */ 3255 3256 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3257 error = sawritefilemarks(periph, 0, 0); 3258 if (error && error != EACCES) 3259 return (error); 3260 } 3261 3262 ccb = cam_periph_getccb(periph, 1); 3263 Set_CCB_Type(ccb, SA_CCB_POLLED); 3264 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3265 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3266 softc->dsreg = MTIO_DSREG_RBSY; 3267 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3268 softc->dsreg = MTIO_DSREG_REST; 3269 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3270 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3271 3272 if (error == 0) { 3273 if (loc.flags & SA_RPOS_UNCERTAIN) { 3274 error = EINVAL; /* nothing is certain */ 3275 } else { 3276 *blkptr = scsi_4btoul(loc.firstblk); 3277 } 3278 } 3279 3280 xpt_release_ccb(ccb); 3281 return (error); 3282 } 3283 3284 static int 3285 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3286 { 3287 union ccb *ccb; 3288 struct sa_softc *softc; 3289 int error; 3290 3291 /* 3292 * We used to try and flush any buffered writes here. 3293 * Now we push this onto user applications to either 3294 * flush the pending writes themselves (via a zero count 3295 * WRITE FILEMARKS command) or they can trust their tape 3296 * drive to do this correctly for them. 3297 */ 3298 3299 softc = (struct sa_softc *)periph->softc; 3300 ccb = cam_periph_getccb(periph, 1); 3301 Set_CCB_Type(ccb, SA_CCB_POLLED); 3302 3303 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3304 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3305 3306 3307 softc->dsreg = MTIO_DSREG_POS; 3308 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3309 softc->dsreg = MTIO_DSREG_REST; 3310 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3311 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3312 xpt_release_ccb(ccb); 3313 /* 3314 * Note relative file && block number position as now unknown. 3315 */ 3316 softc->fileno = softc->blkno = (daddr_t) -1; 3317 return (error); 3318 } 3319 3320 static int 3321 saretension(struct cam_periph *periph) 3322 { 3323 union ccb *ccb; 3324 struct sa_softc *softc; 3325 int error; 3326 3327 softc = (struct sa_softc *)periph->softc; 3328 3329 ccb = cam_periph_getccb(periph, 1); 3330 Set_CCB_Type(ccb, SA_CCB_POLLED); 3331 3332 /* It is safe to retry this operation */ 3333 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3334 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3335 3336 softc->dsreg = MTIO_DSREG_TEN; 3337 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3338 softc->dsreg = MTIO_DSREG_REST; 3339 3340 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3341 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3342 xpt_release_ccb(ccb); 3343 if (error == 0) 3344 softc->fileno = softc->blkno = (daddr_t) 0; 3345 else 3346 softc->fileno = softc->blkno = (daddr_t) -1; 3347 return (error); 3348 } 3349 3350 static int 3351 sareservereleaseunit(struct cam_periph *periph, int reserve) 3352 { 3353 union ccb *ccb; 3354 struct sa_softc *softc; 3355 int error; 3356 3357 softc = (struct sa_softc *)periph->softc; 3358 ccb = cam_periph_getccb(periph, 1); 3359 Set_CCB_Type(ccb, SA_CCB_POLLED); 3360 3361 /* It is safe to retry this operation */ 3362 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3363 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3364 softc->dsreg = MTIO_DSREG_RBSY; 3365 error = cam_periph_runccb(ccb, saerror, 0, 3366 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3367 softc->dsreg = MTIO_DSREG_REST; 3368 QFRLS(ccb); 3369 xpt_release_ccb(ccb); 3370 3371 /* 3372 * If the error was Illegal Request, then the device doesn't support 3373 * RESERVE/RELEASE. This is not an error. 3374 */ 3375 if (error == EINVAL) { 3376 error = 0; 3377 } 3378 3379 return (error); 3380 } 3381 3382 static int 3383 saloadunload(struct cam_periph *periph, int load) 3384 { 3385 union ccb *ccb; 3386 struct sa_softc *softc; 3387 int error; 3388 3389 softc = (struct sa_softc *)periph->softc; 3390 3391 ccb = cam_periph_getccb(periph, 1); 3392 Set_CCB_Type(ccb, SA_CCB_POLLED); 3393 3394 /* It is safe to retry this operation */ 3395 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3396 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3397 3398 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3399 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3400 softc->dsreg = MTIO_DSREG_REST; 3401 QFRLS(ccb); 3402 xpt_release_ccb(ccb); 3403 3404 if (error || load == 0) 3405 softc->fileno = softc->blkno = (daddr_t) -1; 3406 else if (error == 0) 3407 softc->fileno = softc->blkno = (daddr_t) 0; 3408 return (error); 3409 } 3410 3411 static int 3412 saerase(struct cam_periph *periph, int longerase) 3413 { 3414 3415 union ccb *ccb; 3416 struct sa_softc *softc; 3417 int error; 3418 3419 softc = (struct sa_softc *)periph->softc; 3420 if (softc->open_rdonly) 3421 return (EBADF); 3422 3423 ccb = cam_periph_getccb(periph, 1); 3424 Set_CCB_Type(ccb, SA_CCB_POLLED); 3425 3426 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3427 SSD_FULL_SIZE, ERASE_TIMEOUT); 3428 3429 softc->dsreg = MTIO_DSREG_ZER; 3430 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3431 softc->dsreg = MTIO_DSREG_REST; 3432 3433 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3434 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3435 xpt_release_ccb(ccb); 3436 return (error); 3437 } 3438 3439 #endif /* _KERNEL */ 3440 3441 /* 3442 * Read tape block limits command. 3443 */ 3444 void 3445 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3446 void (*cbfcnp)(struct cam_periph *, union ccb *), 3447 u_int8_t tag_action, 3448 struct scsi_read_block_limits_data *rlimit_buf, 3449 u_int8_t sense_len, u_int32_t timeout) 3450 { 3451 struct scsi_read_block_limits *scsi_cmd; 3452 3453 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3454 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3455 sizeof(*scsi_cmd), timeout); 3456 3457 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3458 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3459 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3460 } 3461 3462 void 3463 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3464 void (*cbfcnp)(struct cam_periph *, union ccb *), 3465 u_int8_t tag_action, int readop, int sli, 3466 int fixed, u_int32_t length, u_int8_t *data_ptr, 3467 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3468 { 3469 struct scsi_sa_rw *scsi_cmd; 3470 3471 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3472 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3473 scsi_cmd->sli_fixed = 0; 3474 if (sli && readop) 3475 scsi_cmd->sli_fixed |= SAR_SLI; 3476 if (fixed) 3477 scsi_cmd->sli_fixed |= SARW_FIXED; 3478 scsi_ulto3b(length, scsi_cmd->length); 3479 scsi_cmd->control = 0; 3480 3481 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3482 tag_action, data_ptr, dxfer_len, sense_len, 3483 sizeof(*scsi_cmd), timeout); 3484 } 3485 3486 void 3487 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3488 void (*cbfcnp)(struct cam_periph *, union ccb *), 3489 u_int8_t tag_action, int immediate, int eot, 3490 int reten, int load, u_int8_t sense_len, 3491 u_int32_t timeout) 3492 { 3493 struct scsi_load_unload *scsi_cmd; 3494 3495 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3496 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3497 scsi_cmd->opcode = LOAD_UNLOAD; 3498 if (immediate) 3499 scsi_cmd->immediate = SLU_IMMED; 3500 if (eot) 3501 scsi_cmd->eot_reten_load |= SLU_EOT; 3502 if (reten) 3503 scsi_cmd->eot_reten_load |= SLU_RETEN; 3504 if (load) 3505 scsi_cmd->eot_reten_load |= SLU_LOAD; 3506 3507 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3508 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3509 } 3510 3511 void 3512 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3513 void (*cbfcnp)(struct cam_periph *, union ccb *), 3514 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3515 u_int32_t timeout) 3516 { 3517 struct scsi_rewind *scsi_cmd; 3518 3519 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3520 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3521 scsi_cmd->opcode = REWIND; 3522 if (immediate) 3523 scsi_cmd->immediate = SREW_IMMED; 3524 3525 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3526 0, sense_len, sizeof(*scsi_cmd), timeout); 3527 } 3528 3529 void 3530 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3531 void (*cbfcnp)(struct cam_periph *, union ccb *), 3532 u_int8_t tag_action, scsi_space_code code, 3533 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3534 { 3535 struct scsi_space *scsi_cmd; 3536 3537 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3538 scsi_cmd->opcode = SPACE; 3539 scsi_cmd->code = code; 3540 scsi_ulto3b(count, scsi_cmd->count); 3541 scsi_cmd->control = 0; 3542 3543 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3544 0, sense_len, sizeof(*scsi_cmd), timeout); 3545 } 3546 3547 void 3548 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3549 void (*cbfcnp)(struct cam_periph *, union ccb *), 3550 u_int8_t tag_action, int immediate, int setmark, 3551 u_int32_t num_marks, u_int8_t sense_len, 3552 u_int32_t timeout) 3553 { 3554 struct scsi_write_filemarks *scsi_cmd; 3555 3556 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3557 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3558 scsi_cmd->opcode = WRITE_FILEMARKS; 3559 if (immediate) 3560 scsi_cmd->byte2 |= SWFMRK_IMMED; 3561 if (setmark) 3562 scsi_cmd->byte2 |= SWFMRK_WSMK; 3563 3564 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3565 3566 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3567 0, sense_len, sizeof(*scsi_cmd), timeout); 3568 } 3569 3570 /* 3571 * The reserve and release unit commands differ only by their opcodes. 3572 */ 3573 void 3574 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3575 void (*cbfcnp)(struct cam_periph *, union ccb *), 3576 u_int8_t tag_action, int third_party, 3577 int third_party_id, u_int8_t sense_len, 3578 u_int32_t timeout, int reserve) 3579 { 3580 struct scsi_reserve_release_unit *scsi_cmd; 3581 3582 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3583 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3584 3585 if (reserve) 3586 scsi_cmd->opcode = RESERVE_UNIT; 3587 else 3588 scsi_cmd->opcode = RELEASE_UNIT; 3589 3590 if (third_party) { 3591 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3592 scsi_cmd->lun_thirdparty |= 3593 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3594 } 3595 3596 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3597 0, sense_len, sizeof(*scsi_cmd), timeout); 3598 } 3599 3600 void 3601 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3602 void (*cbfcnp)(struct cam_periph *, union ccb *), 3603 u_int8_t tag_action, int immediate, int long_erase, 3604 u_int8_t sense_len, u_int32_t timeout) 3605 { 3606 struct scsi_erase *scsi_cmd; 3607 3608 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3609 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3610 3611 scsi_cmd->opcode = ERASE; 3612 3613 if (immediate) 3614 scsi_cmd->lun_imm_long |= SE_IMMED; 3615 3616 if (long_erase) 3617 scsi_cmd->lun_imm_long |= SE_LONG; 3618 3619 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3620 0, sense_len, sizeof(*scsi_cmd), timeout); 3621 } 3622 3623 /* 3624 * Read Tape Position command. 3625 */ 3626 void 3627 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3628 void (*cbfcnp)(struct cam_periph *, union ccb *), 3629 u_int8_t tag_action, int hardsoft, 3630 struct scsi_tape_position_data *sbp, 3631 u_int8_t sense_len, u_int32_t timeout) 3632 { 3633 struct scsi_tape_read_position *scmd; 3634 3635 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3636 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3637 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3638 bzero(scmd, sizeof(*scmd)); 3639 scmd->opcode = READ_POSITION; 3640 scmd->byte1 = hardsoft; 3641 } 3642 3643 /* 3644 * Set Tape Position command. 3645 */ 3646 void 3647 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3648 void (*cbfcnp)(struct cam_periph *, union ccb *), 3649 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3650 u_int8_t sense_len, u_int32_t timeout) 3651 { 3652 struct scsi_tape_locate *scmd; 3653 3654 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3655 NULL, 0, sense_len, sizeof(*scmd), timeout); 3656 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3657 bzero(scmd, sizeof(*scmd)); 3658 scmd->opcode = LOCATE; 3659 if (hardsoft) 3660 scmd->byte1 |= SA_SPOS_BT; 3661 scsi_ulto4b(blkno, scmd->blkaddr); 3662 } 3663