1 /* 2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $ 3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.21 2006/12/22 23:12:16 swildner Exp $ 4 * 5 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 6 * 7 * Copyright (c) 1999, 2000 Matthew Jacob 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33 #include <sys/param.h> 34 #include <sys/queue.h> 35 #ifdef _KERNEL 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #endif 39 #include <sys/types.h> 40 #ifdef _KERNEL 41 #include <sys/buf.h> 42 #include <sys/malloc.h> 43 #endif 44 #include <sys/mtio.h> 45 #include <sys/conf.h> 46 #ifdef _KERNEL 47 #include <sys/proc.h> 48 #include <sys/buf2.h> 49 #include <sys/thread2.h> 50 #endif 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 #ifndef UNUSED_PARAMETER 99 #define UNUSED_PARAMETER(x) x = x 100 #endif 101 102 #define QFRLS(ccb) \ 103 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 104 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 105 106 /* 107 * Driver states 108 */ 109 110 111 typedef enum { 112 SA_STATE_NORMAL, SA_STATE_ABNORMAL 113 } sa_state; 114 115 #define ccb_pflags ppriv_field0 116 #define ccb_bio ppriv_ptr1 117 118 #define SA_CCB_BUFFER_IO 0x0 119 #define SA_CCB_WAITING 0x1 120 #define SA_CCB_TYPEMASK 0x1 121 #define SA_POSITION_UPDATED 0x2 122 123 #define Set_CCB_Type(x, type) \ 124 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 125 x->ccb_h.ccb_pflags |= type 126 127 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 128 129 130 131 typedef enum { 132 SA_FLAG_OPEN = 0x0001, 133 SA_FLAG_FIXED = 0x0002, 134 SA_FLAG_TAPE_LOCKED = 0x0004, 135 SA_FLAG_TAPE_MOUNTED = 0x0008, 136 SA_FLAG_TAPE_WP = 0x0010, 137 SA_FLAG_TAPE_WRITTEN = 0x0020, 138 SA_FLAG_EOM_PENDING = 0x0040, 139 SA_FLAG_EIO_PENDING = 0x0080, 140 SA_FLAG_EOF_PENDING = 0x0100, 141 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 142 SA_FLAG_EOF_PENDING), 143 SA_FLAG_INVALID = 0x0200, 144 SA_FLAG_COMP_ENABLED = 0x0400, 145 SA_FLAG_COMP_SUPP = 0x0800, 146 SA_FLAG_COMP_UNSUPP = 0x1000, 147 SA_FLAG_TAPE_FROZEN = 0x2000 148 } sa_flags; 149 150 typedef enum { 151 SA_MODE_REWIND = 0x00, 152 SA_MODE_NOREWIND = 0x01, 153 SA_MODE_OFFLINE = 0x02 154 } sa_mode; 155 156 typedef enum { 157 SA_PARAM_NONE = 0x00, 158 SA_PARAM_BLOCKSIZE = 0x01, 159 SA_PARAM_DENSITY = 0x02, 160 SA_PARAM_COMPRESSION = 0x04, 161 SA_PARAM_BUFF_MODE = 0x08, 162 SA_PARAM_NUMBLOCKS = 0x10, 163 SA_PARAM_WP = 0x20, 164 SA_PARAM_SPEED = 0x40, 165 SA_PARAM_ALL = 0x7f 166 } sa_params; 167 168 typedef enum { 169 SA_QUIRK_NONE = 0x00, 170 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 171 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 172 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 173 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 174 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 175 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 176 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 177 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 178 } sa_quirks; 179 180 /* units are bits 4-7, 16-21 (1024 units) */ 181 #define SAUNIT(DEV) \ 182 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 183 184 #define SAMODE(z) ((minor(z) & 0x3)) 185 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 186 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 187 188 #define SA_NOT_CTLDEV 0 189 #define SA_CTLDEV 1 190 191 #define SA_ATYPE_R 0 192 #define SA_ATYPE_NR 1 193 #define SA_ATYPE_ER 2 194 195 #define SAMINOR(ctl, unit, mode, access) \ 196 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 197 (mode << 0x2) | (access & 0x3)) 198 199 #define SA_UNITMASK SAMINOR(0, -1, 0, 0) 200 #define SA_UNIT(unit) SAMINOR(0, unit, 0, 0) 201 202 #define SA_NUM_MODES 4 203 204 struct sa_softc { 205 sa_state state; 206 sa_flags flags; 207 sa_quirks quirks; 208 struct bio_queue_head bio_queue; 209 int queue_count; 210 struct devstat device_stats; 211 int blk_gran; 212 int blk_mask; 213 int blk_shift; 214 u_int32_t max_blk; 215 u_int32_t min_blk; 216 u_int32_t comp_algorithm; 217 u_int32_t saved_comp_algorithm; 218 u_int32_t media_blksize; 219 u_int32_t last_media_blksize; 220 u_int32_t media_numblks; 221 u_int8_t media_density; 222 u_int8_t speed; 223 u_int8_t scsi_rev; 224 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 225 int buffer_mode; 226 int filemarks; 227 union ccb saved_ccb; 228 int last_resid_was_io; 229 230 /* 231 * Relative to BOT Location. 232 */ 233 daddr_t fileno; 234 daddr_t blkno; 235 236 /* 237 * Latched Error Info 238 */ 239 struct { 240 struct scsi_sense_data _last_io_sense; 241 u_int32_t _last_io_resid; 242 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 243 struct scsi_sense_data _last_ctl_sense; 244 u_int32_t _last_ctl_resid; 245 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 246 #define last_io_sense errinfo._last_io_sense 247 #define last_io_resid errinfo._last_io_resid 248 #define last_io_cdb errinfo._last_io_cdb 249 #define last_ctl_sense errinfo._last_ctl_sense 250 #define last_ctl_resid errinfo._last_ctl_resid 251 #define last_ctl_cdb errinfo._last_ctl_cdb 252 } errinfo; 253 /* 254 * Misc other flags/state 255 */ 256 u_int32_t 257 : 31, 258 ctrl_mode : 1; /* control device open */ 259 }; 260 261 struct sa_quirk_entry { 262 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 263 sa_quirks quirks; /* specific quirk type */ 264 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 265 }; 266 267 static struct sa_quirk_entry sa_quirk_table[] = 268 { 269 { 270 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 271 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 272 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 273 }, 274 { 275 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 276 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 277 }, 278 { 279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 280 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 284 "Python*", "*"}, SA_QUIRK_NODREAD, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "VIPER 2525 25462", "-011"}, 293 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 294 }, 295 { 296 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 297 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 298 }, 299 #if 0 300 { 301 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 302 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 303 }, 304 #endif 305 { 306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 307 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 308 }, 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 311 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 312 }, 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 315 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 319 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 323 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 324 }, 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 327 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { /* jreynold@primenet.com */ 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 331 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 332 }, 333 { /* mike@sentex.net */ 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 335 "STT20000*", "*"}, SA_QUIRK_1FM, 0 336 }, 337 { 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 339 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 343 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 347 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 351 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 355 " SLR*", "*"}, SA_QUIRK_1FM, 0 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 359 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 363 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 364 } 365 }; 366 367 static d_open_t saopen; 368 static d_close_t saclose; 369 static d_strategy_t sastrategy; 370 static d_ioctl_t saioctl; 371 static periph_init_t sainit; 372 static periph_ctor_t saregister; 373 static periph_oninv_t saoninvalidate; 374 static periph_dtor_t sacleanup; 375 static periph_start_t sastart; 376 static void saasync(void *callback_arg, u_int32_t code, 377 struct cam_path *path, void *arg); 378 static void sadone(struct cam_periph *periph, 379 union ccb *start_ccb); 380 static int saerror(union ccb *ccb, u_int32_t cam_flags, 381 u_int32_t sense_flags); 382 static int samarkswanted(struct cam_periph *); 383 static int sacheckeod(struct cam_periph *periph); 384 static int sagetparams(struct cam_periph *periph, 385 sa_params params_to_get, 386 u_int32_t *blocksize, u_int8_t *density, 387 u_int32_t *numblocks, int *buff_mode, 388 u_int8_t *write_protect, u_int8_t *speed, 389 int *comp_supported, int *comp_enabled, 390 u_int32_t *comp_algorithm, 391 sa_comp_t *comp_page); 392 static int sasetparams(struct cam_periph *periph, 393 sa_params params_to_set, 394 u_int32_t blocksize, u_int8_t density, 395 u_int32_t comp_algorithm, 396 u_int32_t sense_flags); 397 static void saprevent(struct cam_periph *periph, int action); 398 static int sarewind(struct cam_periph *periph); 399 static int saspace(struct cam_periph *periph, int count, 400 scsi_space_code code); 401 static int samount(struct cam_periph *, int, cdev_t); 402 static int saretension(struct cam_periph *periph); 403 static int sareservereleaseunit(struct cam_periph *periph, 404 int reserve); 405 static int saloadunload(struct cam_periph *periph, int load); 406 static int saerase(struct cam_periph *periph, int longerase); 407 static int sawritefilemarks(struct cam_periph *periph, 408 int nmarks, int setmarks); 409 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 410 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 411 412 413 static struct periph_driver sadriver = 414 { 415 sainit, "sa", 416 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 417 }; 418 419 DATA_SET(periphdriver_set, sadriver); 420 421 /* For 2.2-stable support */ 422 #ifndef D_TAPE 423 #define D_TAPE 0 424 #endif 425 426 #define SA_CDEV_MAJOR 14 427 428 static struct dev_ops sa_ops = { 429 { "sa", SA_CDEV_MAJOR, D_TAPE }, 430 .d_open = saopen, 431 .d_close = saclose, 432 .d_read = physread, 433 .d_write = physwrite, 434 .d_ioctl = saioctl, 435 .d_strategy = sastrategy, 436 }; 437 438 static struct extend_array *saperiphs; 439 440 static int 441 saopen(struct dev_open_args *ap) 442 { 443 cdev_t dev = ap->a_head.a_dev; 444 struct cam_periph *periph; 445 struct sa_softc *softc; 446 int unit; 447 int mode; 448 int density; 449 int error; 450 451 unit = SAUNIT(dev); 452 mode = SAMODE(dev); 453 density = SADENSITY(dev); 454 455 crit_enter(); 456 periph = cam_extend_get(saperiphs, unit); 457 if (periph == NULL) { 458 crit_exit(); 459 return (ENXIO); 460 } 461 softc = (struct sa_softc *)periph->softc; 462 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 463 crit_exit(); 464 return (error); 465 } 466 crit_exit(); 467 468 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 469 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 470 471 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 472 cam_periph_unlock(periph); 473 return (ENXIO); 474 } 475 if (SA_IS_CTRL(dev)) { 476 softc->ctrl_mode = 1; 477 cam_periph_unlock(periph); 478 return (0); 479 } 480 481 482 if (softc->flags & SA_FLAG_OPEN) { 483 error = EBUSY; 484 } else if (softc->flags & SA_FLAG_INVALID) { 485 error = ENXIO; 486 } else { 487 /* 488 * The function samount ensures media is loaded and ready. 489 * It also does a device RESERVE if the tape isn't yet mounted. 490 */ 491 error = samount(periph, ap->a_oflags, dev); 492 } 493 494 if (error) { 495 cam_periph_release(periph); 496 } else { 497 saprevent(periph, PR_PREVENT); 498 softc->flags |= SA_FLAG_OPEN; 499 } 500 cam_periph_unlock(periph); 501 return (error); 502 } 503 504 static int 505 saclose(struct dev_close_args *ap) 506 { 507 cdev_t dev = ap->a_head.a_dev; 508 struct cam_periph *periph; 509 struct sa_softc *softc; 510 int unit, mode, error, writing, tmp; 511 int closedbits = SA_FLAG_OPEN; 512 513 unit = SAUNIT(dev); 514 mode = SAMODE(dev); 515 periph = cam_extend_get(saperiphs, unit); 516 if (periph == NULL) 517 return (ENXIO); 518 519 softc = (struct sa_softc *)periph->softc; 520 521 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 522 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 523 524 525 if ((error = cam_periph_lock(periph, 0)) != 0) { 526 return (error); 527 } 528 529 if (SA_IS_CTRL(dev)) { 530 softc->ctrl_mode = 0; 531 cam_periph_release(periph); 532 cam_periph_unlock(periph); 533 return (0); 534 } 535 536 /* 537 * Were we writing the tape? 538 */ 539 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 540 541 /* 542 * See whether or not we need to write filemarks. If this 543 * fails, we probably have to assume we've lost tape 544 * position. 545 */ 546 error = sacheckeod(periph); 547 if (error) { 548 xpt_print_path(periph->path); 549 kprintf("failed to write terminating filemark(s)\n"); 550 softc->flags |= SA_FLAG_TAPE_FROZEN; 551 } 552 553 /* 554 * Whatever we end up doing, allow users to eject tapes from here on. 555 */ 556 saprevent(periph, PR_ALLOW); 557 558 /* 559 * Decide how to end... 560 */ 561 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 562 closedbits |= SA_FLAG_TAPE_FROZEN; 563 } else switch (mode) { 564 case SA_MODE_OFFLINE: 565 /* 566 * An 'offline' close is an unconditional release of 567 * frozen && mount conditions, irrespective of whether 568 * these operations succeeded. The reason for this is 569 * to allow at least some kind of programmatic way 570 * around our state getting all fouled up. If somebody 571 * issues an 'offline' command, that will be allowed 572 * to clear state. 573 */ 574 sarewind(periph); 575 saloadunload(periph, FALSE); 576 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 577 break; 578 case SA_MODE_REWIND: 579 /* 580 * If the rewind fails, return an error- if anyone cares, 581 * but not overwriting any previous error. 582 * 583 * We don't clear the notion of mounted here, but we do 584 * clear the notion of frozen if we successfully rewound. 585 */ 586 tmp = sarewind(periph); 587 if (tmp) { 588 if (error != 0) 589 error = tmp; 590 } else { 591 closedbits |= SA_FLAG_TAPE_FROZEN; 592 } 593 break; 594 case SA_MODE_NOREWIND: 595 /* 596 * If we're not rewinding/unloading the tape, find out 597 * whether we need to back up over one of two filemarks 598 * we wrote (if we wrote two filemarks) so that appends 599 * from this point on will be sane. 600 */ 601 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 602 tmp = saspace(periph, -1, SS_FILEMARKS); 603 if (tmp) { 604 xpt_print_path(periph->path); 605 kprintf("unable to backspace over one of double" 606 " filemarks at end of tape\n"); 607 xpt_print_path(periph->path); 608 kprintf("it is possible that this device" 609 " needs a SA_QUIRK_1FM quirk set for it\n"); 610 softc->flags |= SA_FLAG_TAPE_FROZEN; 611 } 612 } 613 break; 614 default: 615 xpt_print_path(periph->path); 616 panic("unknown mode 0x%x in saclose\n", mode); 617 /* NOTREACHED */ 618 break; 619 } 620 621 /* 622 * We wish to note here that there are no more filemarks to be written. 623 */ 624 softc->filemarks = 0; 625 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 626 627 /* 628 * And we are no longer open for business. 629 */ 630 softc->flags &= ~closedbits; 631 632 /* 633 * Inform users if tape state if frozen.... 634 */ 635 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 636 xpt_print_path(periph->path); 637 kprintf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 638 "command to clear this state.\n"); 639 } 640 641 /* release the device if it is no longer mounted */ 642 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 643 sareservereleaseunit(periph, FALSE); 644 645 cam_periph_unlock(periph); 646 cam_periph_release(periph); 647 648 return (error); 649 } 650 651 /* 652 * Actually translate the requested transfer into one the physical driver 653 * can understand. The transfer is described by a buf and will include 654 * only one physical transfer. 655 */ 656 static int 657 sastrategy(struct dev_strategy_args *ap) 658 { 659 cdev_t dev = ap->a_head.a_dev; 660 struct bio *bio = ap->a_bio; 661 struct buf *bp = bio->bio_buf; 662 struct cam_periph *periph; 663 struct sa_softc *softc; 664 u_int unit; 665 666 if (SA_IS_CTRL(dev)) { 667 bp->b_error = EINVAL; 668 goto bad; 669 } 670 unit = SAUNIT(dev); 671 periph = cam_extend_get(saperiphs, unit); 672 if (periph == NULL) { 673 bp->b_error = ENXIO; 674 goto bad; 675 } 676 softc = (struct sa_softc *)periph->softc; 677 678 crit_enter(); 679 680 if (softc->flags & SA_FLAG_INVALID) { 681 crit_exit(); 682 bp->b_error = ENXIO; 683 goto bad; 684 } 685 686 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 687 crit_exit(); 688 bp->b_error = EPERM; 689 goto bad; 690 } 691 692 crit_exit(); 693 694 /* 695 * If it's a null transfer, return immediatly 696 */ 697 if (bp->b_bcount == 0) 698 goto done; 699 700 /* valid request? */ 701 if (softc->flags & SA_FLAG_FIXED) { 702 /* 703 * Fixed block device. The byte count must 704 * be a multiple of our block size. 705 */ 706 if (((softc->blk_mask != ~0) && 707 ((bp->b_bcount & softc->blk_mask) != 0)) || 708 ((softc->blk_mask == ~0) && 709 ((bp->b_bcount % softc->min_blk) != 0))) { 710 xpt_print_path(periph->path); 711 kprintf("Invalid request. Fixed block device " 712 "requests must be a multiple " 713 "of %d bytes\n", softc->media_blksize); 714 bp->b_error = EINVAL; 715 goto bad; 716 } 717 } else if ((bp->b_bcount > softc->max_blk) || 718 (bp->b_bcount < softc->min_blk) || 719 (bp->b_bcount & softc->blk_mask) != 0) { 720 721 xpt_print_path(periph->path); 722 kprintf("Invalid request. Variable block device " 723 "requests must be "); 724 if (softc->blk_mask != 0) { 725 kprintf("a multiple of %d ", (0x1 << softc->blk_gran)); 726 } 727 kprintf("between %d and %d bytes\n", softc->min_blk, 728 softc->max_blk); 729 bp->b_error = EINVAL; 730 goto bad; 731 } 732 733 /* 734 * Mask interrupts so that the device cannot be invalidated until 735 * after we are in the queue. Otherwise, we might not properly 736 * clean up one of the buffers. 737 */ 738 crit_enter(); 739 740 /* 741 * Place it at the end of the queue. 742 */ 743 bioq_insert_tail(&softc->bio_queue, bio); 744 745 softc->queue_count++; 746 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 747 "%s byte %s queue count now %d\n", (int) bp->b_bcount, 748 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 749 (bp->b_cmd == BUF_CMD_READ)? "read" : "write", softc->queue_count)); 750 751 crit_exit(); 752 753 /* 754 * Schedule ourselves for performing the work. 755 */ 756 xpt_schedule(periph, 1); 757 758 return(0); 759 bad: 760 bp->b_flags |= B_ERROR; 761 done: 762 763 /* 764 * Correctly set the buf to indicate a completed xfer 765 */ 766 bp->b_resid = bp->b_bcount; 767 biodone(bio); 768 return(0); 769 } 770 771 static int 772 saioctl(struct dev_ioctl_args *ap) 773 { 774 cdev_t dev = ap->a_head.a_dev; 775 caddr_t addr = ap->a_data; 776 struct cam_periph *periph; 777 struct sa_softc *softc; 778 scsi_space_code spaceop; 779 int didlockperiph = 0; 780 int unit; 781 int mode; 782 int density; 783 int error = 0; 784 785 unit = SAUNIT(dev); 786 mode = SAMODE(dev); 787 density = SADENSITY(dev); 788 error = 0; /* shut up gcc */ 789 spaceop = 0; /* shut up gcc */ 790 791 periph = cam_extend_get(saperiphs, unit); 792 if (periph == NULL) 793 return (ENXIO); 794 795 softc = (struct sa_softc *)periph->softc; 796 797 /* 798 * Check for control mode accesses. We allow MTIOCGET and 799 * MTIOCERRSTAT (but need to be the only one open in order 800 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 801 * and MTCOMP (but need to be the only one accessing this 802 * device to run those). 803 */ 804 805 if (SA_IS_CTRL(dev)) { 806 switch (ap->a_cmd) { 807 case MTIOCGETEOTMODEL: 808 case MTIOCGET: 809 break; 810 case MTIOCERRSTAT: 811 /* 812 * If the periph isn't already locked, lock it 813 * so our MTIOCERRSTAT can reset latched error stats. 814 * 815 * If the periph is already locked, skip it because 816 * we're just getting status and it'll be up to the 817 * other thread that has this device open to do 818 * an MTIOCERRSTAT that would clear latched status. 819 */ 820 crit_enter(); 821 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 822 error = cam_periph_lock(periph, PCATCH); 823 if (error != 0) { 824 crit_exit(); 825 return (error); 826 } 827 didlockperiph = 1; 828 } 829 crit_exit(); 830 break; 831 832 case MTIOCSETEOTMODEL: 833 case MTSETBSIZ: 834 case MTSETDNSTY: 835 case MTCOMP: 836 /* 837 * We need to acquire the peripheral here rather 838 * than at open time because we are sharing writable 839 * access to data structures. 840 */ 841 crit_enter(); 842 error = cam_periph_lock(periph, PCATCH); 843 if (error != 0) { 844 crit_exit(); 845 return (error); 846 } 847 didlockperiph = 1; 848 crit_exit(); 849 break; 850 851 default: 852 return (EINVAL); 853 } 854 } 855 856 /* 857 * Find the device that the user is talking about 858 */ 859 switch (ap->a_cmd) { 860 case MTIOCGET: 861 { 862 struct mtget *g = (struct mtget *)addr; 863 864 /* 865 * If this isn't the control mode device, actually go out 866 * and ask the drive again what it's set to. 867 */ 868 if (!SA_IS_CTRL(dev)) { 869 u_int8_t write_protect; 870 int comp_enabled, comp_supported; 871 error = sagetparams(periph, SA_PARAM_ALL, 872 &softc->media_blksize, &softc->media_density, 873 &softc->media_numblks, &softc->buffer_mode, 874 &write_protect, &softc->speed, &comp_supported, 875 &comp_enabled, &softc->comp_algorithm, NULL); 876 if (error) 877 break; 878 if (write_protect) 879 softc->flags |= SA_FLAG_TAPE_WP; 880 else 881 softc->flags &= ~SA_FLAG_TAPE_WP; 882 softc->flags &= ~(SA_FLAG_COMP_SUPP| 883 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 884 if (comp_supported) { 885 if (softc->saved_comp_algorithm == 0) 886 softc->saved_comp_algorithm = 887 softc->comp_algorithm; 888 softc->flags |= SA_FLAG_COMP_SUPP; 889 if (comp_enabled) 890 softc->flags |= SA_FLAG_COMP_ENABLED; 891 } else 892 softc->flags |= SA_FLAG_COMP_UNSUPP; 893 } 894 bzero(g, sizeof(struct mtget)); 895 g->mt_type = MT_ISAR; 896 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 897 g->mt_comp = MT_COMP_UNSUPP; 898 g->mt_comp0 = MT_COMP_UNSUPP; 899 g->mt_comp1 = MT_COMP_UNSUPP; 900 g->mt_comp2 = MT_COMP_UNSUPP; 901 g->mt_comp3 = MT_COMP_UNSUPP; 902 } else { 903 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 904 g->mt_comp = MT_COMP_DISABLED; 905 } else { 906 g->mt_comp = softc->comp_algorithm; 907 } 908 g->mt_comp0 = softc->comp_algorithm; 909 g->mt_comp1 = softc->comp_algorithm; 910 g->mt_comp2 = softc->comp_algorithm; 911 g->mt_comp3 = softc->comp_algorithm; 912 } 913 g->mt_density = softc->media_density; 914 g->mt_density0 = softc->media_density; 915 g->mt_density1 = softc->media_density; 916 g->mt_density2 = softc->media_density; 917 g->mt_density3 = softc->media_density; 918 g->mt_blksiz = softc->media_blksize; 919 g->mt_blksiz0 = softc->media_blksize; 920 g->mt_blksiz1 = softc->media_blksize; 921 g->mt_blksiz2 = softc->media_blksize; 922 g->mt_blksiz3 = softc->media_blksize; 923 g->mt_fileno = softc->fileno; 924 g->mt_blkno = softc->blkno; 925 g->mt_dsreg = (short) softc->dsreg; 926 /* 927 * Yes, we know that this is likely to overflow 928 */ 929 if (softc->last_resid_was_io) { 930 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 931 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 932 softc->last_io_resid = 0; 933 } 934 } 935 } else { 936 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 937 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 938 softc->last_ctl_resid = 0; 939 } 940 } 941 } 942 error = 0; 943 break; 944 } 945 case MTIOCERRSTAT: 946 { 947 struct scsi_tape_errors *sep = 948 &((union mterrstat *)addr)->scsi_errstat; 949 950 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 951 ("saioctl: MTIOCERRSTAT\n")); 952 953 bzero(sep, sizeof(*sep)); 954 sep->io_resid = softc->last_io_resid; 955 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 956 sizeof (sep->io_sense)); 957 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 958 sizeof (sep->io_cdb)); 959 sep->ctl_resid = softc->last_ctl_resid; 960 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 961 sizeof (sep->ctl_sense)); 962 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 963 sizeof (sep->ctl_cdb)); 964 965 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 966 bzero((caddr_t) &softc->errinfo, 967 sizeof (softc->errinfo)); 968 error = 0; 969 break; 970 } 971 case MTIOCTOP: 972 { 973 struct mtop *mt; 974 int count; 975 976 mt = (struct mtop *)addr; 977 978 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 979 ("saioctl: op=0x%x count=0x%x\n", 980 mt->mt_op, mt->mt_count)); 981 982 count = mt->mt_count; 983 switch (mt->mt_op) { 984 case MTWEOF: /* write an end-of-file marker */ 985 /* 986 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 987 * flag because by keeping track of filemarks 988 * we have last written we know ehether or not 989 * we need to write more when we close the device. 990 */ 991 error = sawritefilemarks(periph, count, FALSE); 992 break; 993 case MTWSS: /* write a setmark */ 994 error = sawritefilemarks(periph, count, TRUE); 995 break; 996 case MTBSR: /* backward space record */ 997 case MTFSR: /* forward space record */ 998 case MTBSF: /* backward space file */ 999 case MTFSF: /* forward space file */ 1000 case MTBSS: /* backward space setmark */ 1001 case MTFSS: /* forward space setmark */ 1002 case MTEOD: /* space to end of recorded medium */ 1003 { 1004 int nmarks; 1005 1006 spaceop = SS_FILEMARKS; 1007 nmarks = softc->filemarks; 1008 error = sacheckeod(periph); 1009 if (error) { 1010 xpt_print_path(periph->path); 1011 kprintf("EOD check prior to spacing failed\n"); 1012 softc->flags |= SA_FLAG_EIO_PENDING; 1013 break; 1014 } 1015 nmarks -= softc->filemarks; 1016 switch(mt->mt_op) { 1017 case MTBSR: 1018 count = -count; 1019 /* FALLTHROUGH */ 1020 case MTFSR: 1021 spaceop = SS_BLOCKS; 1022 break; 1023 case MTBSF: 1024 count = -count; 1025 /* FALLTHROUGH */ 1026 case MTFSF: 1027 break; 1028 case MTBSS: 1029 count = -count; 1030 /* FALLTHROUGH */ 1031 case MTFSS: 1032 spaceop = SS_SETMARKS; 1033 break; 1034 case MTEOD: 1035 spaceop = SS_EOD; 1036 count = 0; 1037 nmarks = 0; 1038 break; 1039 default: 1040 error = EINVAL; 1041 break; 1042 } 1043 if (error) 1044 break; 1045 1046 nmarks = softc->filemarks; 1047 /* 1048 * XXX: Why are we checking again? 1049 */ 1050 error = sacheckeod(periph); 1051 if (error) 1052 break; 1053 nmarks -= softc->filemarks; 1054 error = saspace(periph, count - nmarks, spaceop); 1055 /* 1056 * At this point, clear that we've written the tape 1057 * and that we've written any filemarks. We really 1058 * don't know what the applications wishes to do next- 1059 * the sacheckeod's will make sure we terminated the 1060 * tape correctly if we'd been writing, but the next 1061 * action the user application takes will set again 1062 * whether we need to write filemarks. 1063 */ 1064 softc->flags &= 1065 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1066 softc->filemarks = 0; 1067 break; 1068 } 1069 case MTREW: /* rewind */ 1070 sacheckeod(periph); 1071 error = sarewind(periph); 1072 /* see above */ 1073 softc->flags &= 1074 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1075 softc->flags &= ~SA_FLAG_ERR_PENDING; 1076 softc->filemarks = 0; 1077 break; 1078 case MTERASE: /* erase */ 1079 error = saerase(periph, count); 1080 softc->flags &= 1081 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1082 softc->flags &= ~SA_FLAG_ERR_PENDING; 1083 break; 1084 case MTRETENS: /* re-tension tape */ 1085 error = saretension(periph); 1086 softc->flags &= 1087 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1088 softc->flags &= ~SA_FLAG_ERR_PENDING; 1089 break; 1090 case MTOFFL: /* rewind and put the drive offline */ 1091 1092 sacheckeod(periph); 1093 /* see above */ 1094 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1095 softc->filemarks = 0; 1096 1097 error = sarewind(periph); 1098 /* clear the frozen flag anyway */ 1099 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1100 1101 /* 1102 * Be sure to allow media removal before ejecting. 1103 */ 1104 1105 saprevent(periph, PR_ALLOW); 1106 if (error == 0) { 1107 error = saloadunload(periph, FALSE); 1108 if (error == 0) { 1109 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1110 } 1111 } 1112 break; 1113 1114 case MTNOP: /* no operation, sets status only */ 1115 case MTCACHE: /* enable controller cache */ 1116 case MTNOCACHE: /* disable controller cache */ 1117 error = 0; 1118 break; 1119 1120 case MTSETBSIZ: /* Set block size for device */ 1121 1122 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1123 0, 0, 0); 1124 if (error == 0) { 1125 softc->last_media_blksize = 1126 softc->media_blksize; 1127 softc->media_blksize = count; 1128 if (count) { 1129 softc->flags |= SA_FLAG_FIXED; 1130 if (powerof2(count)) { 1131 softc->blk_shift = 1132 ffs(count) - 1; 1133 softc->blk_mask = count - 1; 1134 } else { 1135 softc->blk_mask = ~0; 1136 softc->blk_shift = 0; 1137 } 1138 /* 1139 * Make the user's desire 'persistent'. 1140 */ 1141 softc->quirks &= ~SA_QUIRK_VARIABLE; 1142 softc->quirks |= SA_QUIRK_FIXED; 1143 } else { 1144 softc->flags &= ~SA_FLAG_FIXED; 1145 if (softc->max_blk == 0) { 1146 softc->max_blk = ~0; 1147 } 1148 softc->blk_shift = 0; 1149 if (softc->blk_gran != 0) { 1150 softc->blk_mask = 1151 softc->blk_gran - 1; 1152 } else { 1153 softc->blk_mask = 0; 1154 } 1155 /* 1156 * Make the user's desire 'persistent'. 1157 */ 1158 softc->quirks |= SA_QUIRK_VARIABLE; 1159 softc->quirks &= ~SA_QUIRK_FIXED; 1160 } 1161 } 1162 break; 1163 case MTSETDNSTY: /* Set density for device and mode */ 1164 if (count > UCHAR_MAX) { 1165 error = EINVAL; 1166 break; 1167 } else { 1168 error = sasetparams(periph, SA_PARAM_DENSITY, 1169 0, count, 0, 0); 1170 } 1171 break; 1172 case MTCOMP: /* enable compression */ 1173 /* 1174 * Some devices don't support compression, and 1175 * don't like it if you ask them for the 1176 * compression page. 1177 */ 1178 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1179 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1180 error = ENODEV; 1181 break; 1182 } 1183 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1184 0, 0, count, SF_NO_PRINT); 1185 break; 1186 default: 1187 error = EINVAL; 1188 } 1189 break; 1190 } 1191 case MTIOCIEOT: 1192 case MTIOCEEOT: 1193 error = 0; 1194 break; 1195 case MTIOCRDSPOS: 1196 error = sardpos(periph, 0, (u_int32_t *) addr); 1197 break; 1198 case MTIOCRDHPOS: 1199 error = sardpos(periph, 1, (u_int32_t *) addr); 1200 break; 1201 case MTIOCSLOCATE: 1202 error = sasetpos(periph, 0, (u_int32_t *) addr); 1203 break; 1204 case MTIOCHLOCATE: 1205 error = sasetpos(periph, 1, (u_int32_t *) addr); 1206 break; 1207 case MTIOCGETEOTMODEL: 1208 error = 0; 1209 if (softc->quirks & SA_QUIRK_1FM) 1210 mode = 1; 1211 else 1212 mode = 2; 1213 *((u_int32_t *) addr) = mode; 1214 break; 1215 case MTIOCSETEOTMODEL: 1216 error = 0; 1217 switch (*((u_int32_t *) addr)) { 1218 case 1: 1219 softc->quirks &= ~SA_QUIRK_2FM; 1220 softc->quirks |= SA_QUIRK_1FM; 1221 break; 1222 case 2: 1223 softc->quirks &= ~SA_QUIRK_1FM; 1224 softc->quirks |= SA_QUIRK_2FM; 1225 break; 1226 default: 1227 error = EINVAL; 1228 break; 1229 } 1230 break; 1231 default: 1232 error = cam_periph_ioctl(periph, ap->a_cmd, addr, saerror); 1233 break; 1234 } 1235 1236 /* 1237 * Check to see if we cleared a frozen state 1238 */ 1239 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1240 switch(ap->a_cmd) { 1241 case MTIOCRDSPOS: 1242 case MTIOCRDHPOS: 1243 case MTIOCSLOCATE: 1244 case MTIOCHLOCATE: 1245 softc->fileno = (daddr_t) -1; 1246 softc->blkno = (daddr_t) -1; 1247 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1248 xpt_print_path(periph->path); 1249 kprintf("tape state now unfrozen.\n"); 1250 break; 1251 default: 1252 break; 1253 } 1254 } 1255 if (didlockperiph) { 1256 cam_periph_unlock(periph); 1257 } 1258 return (error); 1259 } 1260 1261 static void 1262 sainit(void) 1263 { 1264 cam_status status; 1265 struct cam_path *path; 1266 1267 /* 1268 * Create our extend array for storing the devices we attach to. 1269 */ 1270 saperiphs = cam_extend_new(); 1271 if (saperiphs == NULL) { 1272 kprintf("sa: Failed to alloc extend array!\n"); 1273 return; 1274 } 1275 1276 /* 1277 * Install a global async callback. 1278 */ 1279 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1280 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1281 1282 if (status == CAM_REQ_CMP) { 1283 /* Register the async callbacks of interrest */ 1284 struct ccb_setasync csa; /* 1285 * This is an immediate CCB, 1286 * so using the stack is OK 1287 */ 1288 xpt_setup_ccb(&csa.ccb_h, path, 5); 1289 csa.ccb_h.func_code = XPT_SASYNC_CB; 1290 csa.event_enable = AC_FOUND_DEVICE; 1291 csa.callback = saasync; 1292 csa.callback_arg = NULL; 1293 xpt_action((union ccb *)&csa); 1294 status = csa.ccb_h.status; 1295 xpt_free_path(path); 1296 } 1297 1298 if (status != CAM_REQ_CMP) { 1299 kprintf("sa: Failed to attach master async callback " 1300 "due to status 0x%x!\n", status); 1301 } 1302 } 1303 1304 static void 1305 saoninvalidate(struct cam_periph *periph) 1306 { 1307 struct sa_softc *softc; 1308 struct buf *q_bp; 1309 struct bio *q_bio; 1310 struct ccb_setasync csa; 1311 1312 softc = (struct sa_softc *)periph->softc; 1313 1314 /* 1315 * De-register any async callbacks. 1316 */ 1317 xpt_setup_ccb(&csa.ccb_h, periph->path, 1318 /* priority */ 5); 1319 csa.ccb_h.func_code = XPT_SASYNC_CB; 1320 csa.event_enable = 0; 1321 csa.callback = saasync; 1322 csa.callback_arg = periph; 1323 xpt_action((union ccb *)&csa); 1324 1325 softc->flags |= SA_FLAG_INVALID; 1326 1327 /* 1328 * We need to be in a critical section here to keep the buffer 1329 * queue from being modified while we traverse it. 1330 */ 1331 crit_enter(); 1332 1333 /* 1334 * Return all queued I/O with ENXIO. 1335 * XXX Handle any transactions queued to the card 1336 * with XPT_ABORT_CCB. 1337 */ 1338 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){ 1339 bioq_remove(&softc->bio_queue, q_bio); 1340 q_bp = q_bio->bio_buf; 1341 q_bp->b_resid = q_bp->b_bcount; 1342 q_bp->b_error = ENXIO; 1343 q_bp->b_flags |= B_ERROR; 1344 biodone(q_bio); 1345 } 1346 softc->queue_count = 0; 1347 crit_exit(); 1348 1349 xpt_print_path(periph->path); 1350 kprintf("lost device\n"); 1351 1352 } 1353 1354 static void 1355 sacleanup(struct cam_periph *periph) 1356 { 1357 struct sa_softc *softc; 1358 1359 softc = (struct sa_softc *)periph->softc; 1360 1361 devstat_remove_entry(&softc->device_stats); 1362 1363 cam_extend_release(saperiphs, periph->unit_number); 1364 xpt_print_path(periph->path); 1365 kprintf("removing device entry\n"); 1366 dev_ops_remove(&sa_ops, SA_UNITMASK, SA_UNIT(periph->unit_number)); 1367 kfree(softc, M_DEVBUF); 1368 } 1369 1370 static void 1371 saasync(void *callback_arg, u_int32_t code, 1372 struct cam_path *path, void *arg) 1373 { 1374 struct cam_periph *periph; 1375 1376 periph = (struct cam_periph *)callback_arg; 1377 switch (code) { 1378 case AC_FOUND_DEVICE: 1379 { 1380 struct ccb_getdev *cgd; 1381 cam_status status; 1382 1383 cgd = (struct ccb_getdev *)arg; 1384 if (cgd == NULL) 1385 break; 1386 1387 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1388 break; 1389 1390 /* 1391 * Allocate a peripheral instance for 1392 * this device and start the probe 1393 * process. 1394 */ 1395 status = cam_periph_alloc(saregister, saoninvalidate, 1396 sacleanup, sastart, 1397 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1398 saasync, AC_FOUND_DEVICE, cgd); 1399 1400 if (status != CAM_REQ_CMP 1401 && status != CAM_REQ_INPROG) 1402 kprintf("saasync: Unable to probe new device " 1403 "due to status 0x%x\n", status); 1404 break; 1405 } 1406 default: 1407 cam_periph_async(periph, code, path, arg); 1408 break; 1409 } 1410 } 1411 1412 static cam_status 1413 saregister(struct cam_periph *periph, void *arg) 1414 { 1415 struct sa_softc *softc; 1416 struct ccb_setasync csa; 1417 struct ccb_getdev *cgd; 1418 caddr_t match; 1419 int i; 1420 1421 cgd = (struct ccb_getdev *)arg; 1422 if (periph == NULL) { 1423 kprintf("saregister: periph was NULL!!\n"); 1424 return (CAM_REQ_CMP_ERR); 1425 } 1426 1427 if (cgd == NULL) { 1428 kprintf("saregister: no getdev CCB, can't register device\n"); 1429 return (CAM_REQ_CMP_ERR); 1430 } 1431 1432 softc = kmalloc(sizeof (*softc), M_DEVBUF, M_INTWAIT | M_ZERO); 1433 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1434 softc->state = SA_STATE_NORMAL; 1435 softc->fileno = (daddr_t) -1; 1436 softc->blkno = (daddr_t) -1; 1437 1438 bioq_init(&softc->bio_queue); 1439 periph->softc = softc; 1440 cam_extend_set(saperiphs, periph->unit_number, periph); 1441 1442 /* 1443 * See if this device has any quirks. 1444 */ 1445 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1446 (caddr_t)sa_quirk_table, 1447 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1448 sizeof(*sa_quirk_table), scsi_inquiry_match); 1449 1450 if (match != NULL) { 1451 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1452 softc->last_media_blksize = 1453 ((struct sa_quirk_entry *)match)->prefblk; 1454 #ifdef CAMDEBUG 1455 xpt_print_path(periph->path); 1456 kprintf("found quirk entry %d\n", (int) 1457 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1458 #endif 1459 } else 1460 softc->quirks = SA_QUIRK_NONE; 1461 1462 /* 1463 * The SA driver supports a blocksize, but we don't know the 1464 * blocksize until we media is inserted. So, set a flag to 1465 * indicate that the blocksize is unavailable right now. 1466 */ 1467 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1468 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1469 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1470 1471 dev_ops_add(&sa_ops, SA_UNITMASK, SA_UNIT(periph->unit_number)); 1472 make_dev(&sa_ops, SAMINOR(SA_CTLDEV, 1473 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1474 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number); 1475 1476 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1477 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1478 0660, "r%s%d", periph->periph_name, periph->unit_number); 1479 1480 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1481 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 1482 0660, "nr%s%d", periph->periph_name, periph->unit_number); 1483 1484 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV, 1485 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 1486 0660, "er%s%d", periph->periph_name, periph->unit_number); 1487 1488 for (i = 0; i < SA_NUM_MODES; i++) { 1489 1490 make_dev(&sa_ops, 1491 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1492 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d", 1493 periph->periph_name, periph->unit_number, i); 1494 1495 make_dev(&sa_ops, 1496 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1497 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d", 1498 periph->periph_name, periph->unit_number, i); 1499 1500 1501 make_dev(&sa_ops, 1502 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1503 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d", 1504 periph->periph_name, periph->unit_number, i); 1505 } 1506 1507 /* 1508 * Add an async callback so that we get 1509 * notified if this device goes away. 1510 */ 1511 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1512 csa.ccb_h.func_code = XPT_SASYNC_CB; 1513 csa.event_enable = AC_LOST_DEVICE; 1514 csa.callback = saasync; 1515 csa.callback_arg = periph; 1516 xpt_action((union ccb *)&csa); 1517 1518 xpt_announce_periph(periph, NULL); 1519 1520 return (CAM_REQ_CMP); 1521 } 1522 1523 static void 1524 sastart(struct cam_periph *periph, union ccb *start_ccb) 1525 { 1526 struct sa_softc *softc; 1527 1528 softc = (struct sa_softc *)periph->softc; 1529 1530 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1531 1532 1533 switch (softc->state) { 1534 case SA_STATE_NORMAL: 1535 { 1536 /* Pull a buffer from the queue and get going on it */ 1537 struct buf *bp; 1538 struct bio *bio; 1539 1540 /* 1541 * See if there is a buf with work for us to do.. 1542 */ 1543 crit_enter(); 1544 bio = bioq_first(&softc->bio_queue); 1545 if (periph->immediate_priority <= periph->pinfo.priority) { 1546 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1547 ("queuing for immediate ccb\n")); 1548 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1549 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1550 periph_links.sle); 1551 periph->immediate_priority = CAM_PRIORITY_NONE; 1552 crit_exit(); 1553 wakeup(&periph->ccb_list); 1554 } else if (bio == NULL) { 1555 crit_exit(); 1556 xpt_release_ccb(start_ccb); 1557 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1558 struct bio *done_bio; 1559 again: 1560 softc->queue_count--; 1561 bioq_remove(&softc->bio_queue, bio); 1562 bp = bio->bio_buf; 1563 bp->b_resid = bp->b_bcount; 1564 done_bio = bio; 1565 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1566 /* 1567 * We now just clear errors in this case 1568 * and let the residual be the notifier. 1569 */ 1570 bp->b_error = 0; 1571 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1572 /* 1573 * This can only happen if we're reading 1574 * in fixed length mode. In this case, 1575 * we dump the rest of the list the 1576 * same way. 1577 */ 1578 bp->b_error = 0; 1579 if (bioq_first(&softc->bio_queue) != NULL) { 1580 biodone(done_bio); 1581 goto again; 1582 } 1583 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1584 bp->b_error = EIO; 1585 bp->b_flags |= B_ERROR; 1586 } 1587 bio = bioq_first(&softc->bio_queue); 1588 /* 1589 * Only if we have no other buffers queued up 1590 * do we clear the pending error flag. 1591 */ 1592 if (bio == NULL) 1593 softc->flags &= ~SA_FLAG_ERR_PENDING; 1594 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1595 ("sastart- ERR_PENDING now 0x%x, bio is %sNULL, " 1596 "%d more buffers queued up\n", 1597 (softc->flags & SA_FLAG_ERR_PENDING), 1598 (bio != NULL)? "not " : " ", softc->queue_count)); 1599 crit_exit(); 1600 xpt_release_ccb(start_ccb); 1601 biodone(done_bio); 1602 } else { 1603 u_int32_t length; 1604 1605 bioq_remove(&softc->bio_queue, bio); 1606 bp = bio->bio_buf; 1607 softc->queue_count--; 1608 1609 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1610 if (softc->blk_shift != 0) { 1611 length = 1612 bp->b_bcount >> softc->blk_shift; 1613 } else if (softc->media_blksize != 0) { 1614 length = 1615 bp->b_bcount / softc->media_blksize; 1616 } else { 1617 bp->b_error = EIO; 1618 xpt_print_path(periph->path); 1619 kprintf("zero blocksize for " 1620 "FIXED length writes?\n"); 1621 crit_exit(); 1622 biodone(bio); 1623 break; 1624 } 1625 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1626 ("Fixed Record Count is %d\n", length)); 1627 } else { 1628 length = bp->b_bcount; 1629 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1630 ("Variable Record Count is %d\n", length)); 1631 } 1632 devstat_start_transaction(&softc->device_stats); 1633 /* 1634 * Some people have theorized that we should 1635 * suppress illegal length indication if we are 1636 * running in variable block mode so that we don't 1637 * have to request sense every time our requested 1638 * block size is larger than the written block. 1639 * The residual information from the ccb allows 1640 * us to identify this situation anyway. The only 1641 * problem with this is that we will not get 1642 * information about blocks that are larger than 1643 * our read buffer unless we set the block size 1644 * in the mode page to something other than 0. 1645 * 1646 * I believe that this is a non-issue. If user apps 1647 * don't adjust their read size to match our record 1648 * size, that's just life. Anyway, the typical usage 1649 * would be to issue, e.g., 64KB reads and occasionally 1650 * have to do deal with 512 byte or 1KB intermediate 1651 * records. 1652 */ 1653 softc->dsreg = (bp->b_cmd == BUF_CMD_READ) ? 1654 MTIO_DSREG_RD : MTIO_DSREG_WR; 1655 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1656 MSG_SIMPLE_Q_TAG, (bp->b_cmd == BUF_CMD_READ) != 0, 1657 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1658 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1659 IO_TIMEOUT); 1660 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1661 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1662 start_ccb->ccb_h.ccb_bio = bio; 1663 bio = bioq_first(&softc->bio_queue); 1664 crit_exit(); 1665 xpt_action(start_ccb); 1666 } 1667 1668 if (bio != NULL) { 1669 /* Have more work to do, so ensure we stay scheduled */ 1670 xpt_schedule(periph, 1); 1671 } 1672 break; 1673 } 1674 case SA_STATE_ABNORMAL: 1675 default: 1676 panic("state 0x%x in sastart", softc->state); 1677 break; 1678 } 1679 } 1680 1681 1682 static void 1683 sadone(struct cam_periph *periph, union ccb *done_ccb) 1684 { 1685 struct sa_softc *softc; 1686 struct ccb_scsiio *csio; 1687 1688 softc = (struct sa_softc *)periph->softc; 1689 csio = &done_ccb->csio; 1690 switch (CCB_Type(csio)) { 1691 case SA_CCB_BUFFER_IO: 1692 { 1693 struct buf *bp; 1694 struct bio *bio; 1695 int error; 1696 1697 softc->dsreg = MTIO_DSREG_REST; 1698 bio = (struct bio *)done_ccb->ccb_h.ccb_bio; 1699 bp = bio->bio_buf; 1700 error = 0; 1701 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1702 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1703 /* 1704 * A retry was scheduled, so just return. 1705 */ 1706 return; 1707 } 1708 } 1709 1710 if (error == EIO) { 1711 struct buf *q_bp; 1712 struct bio *q_bio; 1713 1714 /* 1715 * Catastrophic error. Mark the tape as frozen 1716 * (we no longer know tape position). 1717 * 1718 * Return all queued I/O with EIO, and unfreeze 1719 * our queue so that future transactions that 1720 * attempt to fix this problem can get to the 1721 * device. 1722 * 1723 */ 1724 1725 crit_enter(); 1726 softc->flags |= SA_FLAG_TAPE_FROZEN; 1727 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL) { 1728 bioq_remove(&softc->bio_queue, q_bio); 1729 q_bp = q_bio->bio_buf; 1730 q_bp->b_resid = q_bp->b_bcount; 1731 q_bp->b_error = EIO; 1732 q_bp->b_flags |= B_ERROR; 1733 biodone(q_bio); 1734 } 1735 crit_exit(); 1736 } 1737 if (error != 0) { 1738 bp->b_resid = bp->b_bcount; 1739 bp->b_error = error; 1740 bp->b_flags |= B_ERROR; 1741 /* 1742 * In the error case, position is updated in saerror. 1743 */ 1744 } else { 1745 bp->b_resid = csio->resid; 1746 bp->b_error = 0; 1747 if (csio->resid != 0) { 1748 bp->b_flags |= B_ERROR; 1749 } 1750 if (bp->b_cmd != BUF_CMD_READ) { 1751 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1752 softc->filemarks = 0; 1753 } 1754 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1755 (softc->blkno != (daddr_t) -1)) { 1756 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1757 u_int32_t l; 1758 if (softc->blk_shift != 0) { 1759 l = bp->b_bcount >> 1760 softc->blk_shift; 1761 } else { 1762 l = bp->b_bcount / 1763 softc->media_blksize; 1764 } 1765 softc->blkno += (daddr_t) l; 1766 } else { 1767 softc->blkno++; 1768 } 1769 } 1770 } 1771 /* 1772 * If we had an error (immediate or pending), 1773 * release the device queue now. 1774 */ 1775 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1776 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1777 #ifdef CAMDEBUG 1778 if (error || bp->b_resid) { 1779 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1780 ("error %d resid %d count %d\n", error, 1781 bp->b_resid, bp->b_bcount)); 1782 } 1783 #endif 1784 devstat_end_transaction_buf(&softc->device_stats, bp); 1785 biodone(bio); 1786 break; 1787 } 1788 case SA_CCB_WAITING: 1789 { 1790 /* Caller will release the CCB */ 1791 wakeup(&done_ccb->ccb_h.cbfcnp); 1792 return; 1793 } 1794 } 1795 xpt_release_ccb(done_ccb); 1796 } 1797 1798 /* 1799 * Mount the tape (make sure it's ready for I/O). 1800 */ 1801 static int 1802 samount(struct cam_periph *periph, int oflags, cdev_t dev) 1803 { 1804 struct sa_softc *softc; 1805 union ccb *ccb; 1806 int error; 1807 1808 /* 1809 * oflags can be checked for 'kind' of open (read-only check) - later 1810 * dev can be checked for a control-mode or compression open - later 1811 */ 1812 UNUSED_PARAMETER(oflags); 1813 UNUSED_PARAMETER(dev); 1814 1815 1816 softc = (struct sa_softc *)periph->softc; 1817 1818 /* 1819 * This should determine if something has happend since the last 1820 * open/mount that would invalidate the mount. We do *not* want 1821 * to retry this command- we just want the status. But we only 1822 * do this if we're mounted already- if we're not mounted, 1823 * we don't care about the unit read state and can instead use 1824 * this opportunity to attempt to reserve the tape unit. 1825 */ 1826 1827 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1828 ccb = cam_periph_getccb(periph, 1); 1829 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1830 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1831 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1832 &softc->device_stats); 1833 QFRLS(ccb); 1834 if (error == ENXIO) { 1835 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1836 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1837 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1838 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1839 &softc->device_stats); 1840 QFRLS(ccb); 1841 } else if (error) { 1842 /* 1843 * We don't need to freeze the tape because we 1844 * will now attempt to rewind/load it. 1845 */ 1846 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1847 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1848 xpt_print_path(ccb->ccb_h.path); 1849 kprintf("error %d on TUR in samount\n", error); 1850 } 1851 } 1852 } else { 1853 error = sareservereleaseunit(periph, TRUE); 1854 if (error) { 1855 return (error); 1856 } 1857 ccb = cam_periph_getccb(periph, 1); 1858 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1859 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1860 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1861 &softc->device_stats); 1862 QFRLS(ccb); 1863 } 1864 1865 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1866 struct scsi_read_block_limits_data *rblim = NULL; 1867 int comp_enabled, comp_supported; 1868 u_int8_t write_protect, guessing = 0; 1869 1870 /* 1871 * Clear out old state. 1872 */ 1873 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1874 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1875 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1876 softc->filemarks = 0; 1877 1878 /* 1879 * *Very* first off, make sure we're loaded to BOT. 1880 */ 1881 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1882 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1883 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1884 &softc->device_stats); 1885 QFRLS(ccb); 1886 1887 /* 1888 * In case this doesn't work, do a REWIND instead 1889 */ 1890 if (error) { 1891 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1892 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1893 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1894 &softc->device_stats); 1895 QFRLS(ccb); 1896 } 1897 if (error) { 1898 xpt_release_ccb(ccb); 1899 goto exit; 1900 } 1901 1902 /* 1903 * Do a dummy test read to force access to the 1904 * media so that the drive will really know what's 1905 * there. We actually don't really care what the 1906 * blocksize on tape is and don't expect to really 1907 * read a full record. 1908 */ 1909 rblim = kmalloc(8192, M_TEMP, M_INTWAIT); 1910 1911 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1912 scsi_sa_read_write(&ccb->csio, 0, sadone, 1913 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1914 (void *) rblim, 8192, SSD_FULL_SIZE, 1915 IO_TIMEOUT); 1916 cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1917 &softc->device_stats); 1918 QFRLS(ccb); 1919 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1920 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1921 error = cam_periph_runccb(ccb, saerror, 0, 1922 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA, 1923 &softc->device_stats); 1924 QFRLS(ccb); 1925 if (error) { 1926 xpt_print_path(ccb->ccb_h.path); 1927 kprintf("unable to rewind after test read\n"); 1928 xpt_release_ccb(ccb); 1929 goto exit; 1930 } 1931 } 1932 1933 /* 1934 * Next off, determine block limits. 1935 */ 1936 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1937 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1938 1939 error = cam_periph_runccb(ccb, saerror, 0, 1940 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO, 1941 &softc->device_stats); 1942 QFRLS(ccb); 1943 xpt_release_ccb(ccb); 1944 1945 if (error != 0) { 1946 /* 1947 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1948 * a MANDATORY command. Anyway- it doesn't matter- 1949 * we can proceed anyway. 1950 */ 1951 softc->blk_gran = 0; 1952 softc->max_blk = ~0; 1953 softc->min_blk = 0; 1954 } else { 1955 if (softc->scsi_rev >= SCSI_REV_3) { 1956 softc->blk_gran = RBL_GRAN(rblim); 1957 } else { 1958 softc->blk_gran = 0; 1959 } 1960 /* 1961 * We take max_blk == min_blk to mean a default to 1962 * fixed mode- but note that whatever we get out of 1963 * sagetparams below will actually determine whether 1964 * we are actually *in* fixed mode. 1965 */ 1966 softc->max_blk = scsi_3btoul(rblim->maximum); 1967 softc->min_blk = scsi_2btoul(rblim->minimum); 1968 1969 1970 } 1971 /* 1972 * Next, perform a mode sense to determine 1973 * current density, blocksize, compression etc. 1974 */ 1975 error = sagetparams(periph, SA_PARAM_ALL, 1976 &softc->media_blksize, 1977 &softc->media_density, 1978 &softc->media_numblks, 1979 &softc->buffer_mode, &write_protect, 1980 &softc->speed, &comp_supported, 1981 &comp_enabled, &softc->comp_algorithm, 1982 NULL); 1983 1984 if (error != 0) { 1985 /* 1986 * We could work a little harder here. We could 1987 * adjust our attempts to get information. It 1988 * might be an ancient tape drive. If someone 1989 * nudges us, we'll do that. 1990 */ 1991 goto exit; 1992 } 1993 1994 /* 1995 * If no quirk has determined that this is a device that is 1996 * preferred to be in fixed or variable mode, now is the time 1997 * to find out. 1998 */ 1999 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2000 guessing = 1; 2001 /* 2002 * This could be expensive to find out. Luckily we 2003 * only need to do this once. If we start out in 2004 * 'default' mode, try and set ourselves to one 2005 * of the densities that would determine a wad 2006 * of other stuff. Go from highest to lowest. 2007 */ 2008 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2009 int i; 2010 static u_int8_t ctry[] = { 2011 SCSI_DENSITY_HALFINCH_PE, 2012 SCSI_DENSITY_HALFINCH_6250C, 2013 SCSI_DENSITY_HALFINCH_6250, 2014 SCSI_DENSITY_HALFINCH_1600, 2015 SCSI_DENSITY_HALFINCH_800, 2016 SCSI_DENSITY_QIC_4GB, 2017 SCSI_DENSITY_QIC_2GB, 2018 SCSI_DENSITY_QIC_525_320, 2019 SCSI_DENSITY_QIC_150, 2020 SCSI_DENSITY_QIC_120, 2021 SCSI_DENSITY_QIC_24, 2022 SCSI_DENSITY_QIC_11_9TRK, 2023 SCSI_DENSITY_QIC_11_4TRK, 2024 SCSI_DENSITY_QIC_1320, 2025 SCSI_DENSITY_QIC_3080, 2026 0 2027 }; 2028 for (i = 0; ctry[i]; i++) { 2029 error = sasetparams(periph, 2030 SA_PARAM_DENSITY, 0, ctry[i], 2031 0, SF_NO_PRINT); 2032 if (error == 0) { 2033 softc->media_density = ctry[i]; 2034 break; 2035 } 2036 } 2037 } 2038 switch (softc->media_density) { 2039 case SCSI_DENSITY_QIC_11_4TRK: 2040 case SCSI_DENSITY_QIC_11_9TRK: 2041 case SCSI_DENSITY_QIC_24: 2042 case SCSI_DENSITY_QIC_120: 2043 case SCSI_DENSITY_QIC_150: 2044 case SCSI_DENSITY_QIC_525_320: 2045 case SCSI_DENSITY_QIC_1320: 2046 case SCSI_DENSITY_QIC_3080: 2047 softc->quirks &= ~SA_QUIRK_2FM; 2048 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2049 softc->last_media_blksize = 512; 2050 break; 2051 case SCSI_DENSITY_QIC_4GB: 2052 case SCSI_DENSITY_QIC_2GB: 2053 softc->quirks &= ~SA_QUIRK_2FM; 2054 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2055 softc->last_media_blksize = 1024; 2056 break; 2057 default: 2058 softc->last_media_blksize = 2059 softc->media_blksize; 2060 softc->quirks |= SA_QUIRK_VARIABLE; 2061 break; 2062 } 2063 } 2064 2065 /* 2066 * If no quirk has determined that this is a device that needs 2067 * to have 2 Filemarks at EOD, now is the time to find out. 2068 */ 2069 2070 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2071 switch (softc->media_density) { 2072 case SCSI_DENSITY_HALFINCH_800: 2073 case SCSI_DENSITY_HALFINCH_1600: 2074 case SCSI_DENSITY_HALFINCH_6250: 2075 case SCSI_DENSITY_HALFINCH_6250C: 2076 case SCSI_DENSITY_HALFINCH_PE: 2077 softc->quirks &= ~SA_QUIRK_1FM; 2078 softc->quirks |= SA_QUIRK_2FM; 2079 break; 2080 default: 2081 break; 2082 } 2083 } 2084 2085 /* 2086 * Now validate that some info we got makes sense. 2087 */ 2088 if ((softc->max_blk < softc->media_blksize) || 2089 (softc->min_blk > softc->media_blksize && 2090 softc->media_blksize)) { 2091 xpt_print_path(ccb->ccb_h.path); 2092 kprintf("BLOCK LIMITS (%d..%d) could not match current " 2093 "block settings (%d)- adjusting\n", softc->min_blk, 2094 softc->max_blk, softc->media_blksize); 2095 softc->max_blk = softc->min_blk = 2096 softc->media_blksize; 2097 } 2098 2099 /* 2100 * Now put ourselves into the right frame of mind based 2101 * upon quirks... 2102 */ 2103 tryagain: 2104 /* 2105 * If we want to be in FIXED mode and our current blocksize 2106 * is not equal to our last blocksize (if nonzero), try and 2107 * set ourselves to this last blocksize (as the 'preferred' 2108 * block size). The initial quirkmatch at registry sets the 2109 * initial 'last' blocksize. If, for whatever reason, this 2110 * 'last' blocksize is zero, set the blocksize to 512, 2111 * or min_blk if that's larger. 2112 */ 2113 if ((softc->quirks & SA_QUIRK_FIXED) && 2114 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2115 (softc->media_blksize != softc->last_media_blksize)) { 2116 softc->media_blksize = softc->last_media_blksize; 2117 if (softc->media_blksize == 0) { 2118 softc->media_blksize = 512; 2119 if (softc->media_blksize < softc->min_blk) { 2120 softc->media_blksize = softc->min_blk; 2121 } 2122 } 2123 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2124 softc->media_blksize, 0, 0, SF_NO_PRINT); 2125 if (error) { 2126 xpt_print_path(ccb->ccb_h.path); 2127 kprintf("unable to set fixed blocksize to %d\n", 2128 softc->media_blksize); 2129 goto exit; 2130 } 2131 } 2132 2133 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2134 (softc->media_blksize != 0)) { 2135 softc->last_media_blksize = softc->media_blksize; 2136 softc->media_blksize = 0; 2137 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2138 0, 0, 0, SF_NO_PRINT); 2139 if (error) { 2140 /* 2141 * If this fails and we were guessing, just 2142 * assume that we got it wrong and go try 2143 * fixed block mode. Don't even check against 2144 * density code at this point. 2145 */ 2146 if (guessing) { 2147 softc->quirks &= ~SA_QUIRK_VARIABLE; 2148 softc->quirks |= SA_QUIRK_FIXED; 2149 if (softc->last_media_blksize == 0) 2150 softc->last_media_blksize = 512; 2151 goto tryagain; 2152 } 2153 xpt_print_path(ccb->ccb_h.path); 2154 kprintf("unable to set variable blocksize\n"); 2155 goto exit; 2156 } 2157 } 2158 2159 /* 2160 * Now that we have the current block size, 2161 * set up some parameters for sastart's usage. 2162 */ 2163 if (softc->media_blksize) { 2164 softc->flags |= SA_FLAG_FIXED; 2165 if (powerof2(softc->media_blksize)) { 2166 softc->blk_shift = 2167 ffs(softc->media_blksize) - 1; 2168 softc->blk_mask = softc->media_blksize - 1; 2169 } else { 2170 softc->blk_mask = ~0; 2171 softc->blk_shift = 0; 2172 } 2173 } else { 2174 /* 2175 * The SCSI-3 spec allows 0 to mean "unspecified". 2176 * The SCSI-1 spec allows 0 to mean 'infinite'. 2177 * 2178 * Either works here. 2179 */ 2180 if (softc->max_blk == 0) { 2181 softc->max_blk = ~0; 2182 } 2183 softc->blk_shift = 0; 2184 if (softc->blk_gran != 0) { 2185 softc->blk_mask = softc->blk_gran - 1; 2186 } else { 2187 softc->blk_mask = 0; 2188 } 2189 } 2190 2191 if (write_protect) 2192 softc->flags |= SA_FLAG_TAPE_WP; 2193 2194 if (comp_supported) { 2195 if (softc->saved_comp_algorithm == 0) 2196 softc->saved_comp_algorithm = 2197 softc->comp_algorithm; 2198 softc->flags |= SA_FLAG_COMP_SUPP; 2199 if (comp_enabled) 2200 softc->flags |= SA_FLAG_COMP_ENABLED; 2201 } else 2202 softc->flags |= SA_FLAG_COMP_UNSUPP; 2203 2204 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2205 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2206 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2207 0, 0, SF_NO_PRINT); 2208 if (error == 0) { 2209 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2210 } else { 2211 xpt_print_path(ccb->ccb_h.path); 2212 kprintf("unable to set buffered mode\n"); 2213 } 2214 error = 0; /* not an error */ 2215 } 2216 2217 2218 if (error == 0) { 2219 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2220 } 2221 exit: 2222 if (rblim != NULL) 2223 kfree(rblim, M_TEMP); 2224 2225 if (error != 0) { 2226 softc->dsreg = MTIO_DSREG_NIL; 2227 } else { 2228 softc->fileno = softc->blkno = 0; 2229 softc->dsreg = MTIO_DSREG_REST; 2230 } 2231 #ifdef SA_1FM_AT_EOD 2232 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2233 softc->quirks |= SA_QUIRK_1FM; 2234 #else 2235 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2236 softc->quirks |= SA_QUIRK_2FM; 2237 #endif 2238 } else 2239 xpt_release_ccb(ccb); 2240 2241 /* 2242 * If we return an error, we're not mounted any more, 2243 * so release any device reservation. 2244 */ 2245 if (error != 0) { 2246 sareservereleaseunit(periph, FALSE); 2247 } else { 2248 /* 2249 * Clear I/O residual. 2250 */ 2251 softc->last_io_resid = 0; 2252 softc->last_ctl_resid = 0; 2253 } 2254 return (error); 2255 } 2256 2257 /* 2258 * How many filemarks do we need to write if we were to terminate the 2259 * tape session right now? Note that this can be a negative number 2260 */ 2261 2262 static int 2263 samarkswanted(struct cam_periph *periph) 2264 { 2265 int markswanted; 2266 struct sa_softc *softc; 2267 2268 softc = (struct sa_softc *)periph->softc; 2269 markswanted = 0; 2270 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2271 markswanted++; 2272 if (softc->quirks & SA_QUIRK_2FM) 2273 markswanted++; 2274 } 2275 markswanted -= softc->filemarks; 2276 return (markswanted); 2277 } 2278 2279 static int 2280 sacheckeod(struct cam_periph *periph) 2281 { 2282 int error; 2283 int markswanted; 2284 struct sa_softc *softc; 2285 2286 softc = (struct sa_softc *)periph->softc; 2287 markswanted = samarkswanted(periph); 2288 2289 if (markswanted > 0) { 2290 error = sawritefilemarks(periph, markswanted, FALSE); 2291 } else { 2292 error = 0; 2293 } 2294 return (error); 2295 } 2296 2297 static int 2298 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2299 { 2300 static const char *toobig = 2301 "%d-byte tape record bigger than supplied buffer\n"; 2302 struct cam_periph *periph; 2303 struct sa_softc *softc; 2304 struct ccb_scsiio *csio; 2305 struct scsi_sense_data *sense; 2306 u_int32_t resid = 0; 2307 int32_t info = 0; 2308 cam_status status; 2309 int error_code, sense_key, asc, ascq, error, aqvalid; 2310 2311 periph = xpt_path_periph(ccb->ccb_h.path); 2312 softc = (struct sa_softc *)periph->softc; 2313 csio = &ccb->csio; 2314 sense = &csio->sense_data; 2315 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2316 aqvalid = sense->extra_len >= 6; 2317 error = 0; 2318 2319 status = csio->ccb_h.status & CAM_STATUS_MASK; 2320 2321 /* 2322 * Calculate/latch up, any residuals... We do this in a funny 2-step 2323 * so we can print stuff here if we have CAM_DEBUG enabled for this 2324 * unit. 2325 */ 2326 if (status == CAM_SCSI_STATUS_ERROR) { 2327 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2328 info = (int32_t) scsi_4btoul(sense->info); 2329 resid = info; 2330 if ((softc->flags & SA_FLAG_FIXED) != 0) 2331 resid *= softc->media_blksize; 2332 } else { 2333 resid = csio->dxfer_len; 2334 info = resid; 2335 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2336 if (softc->media_blksize) 2337 info /= softc->media_blksize; 2338 } 2339 } 2340 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2341 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2342 sizeof (struct scsi_sense_data)); 2343 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2344 (int) csio->cdb_len); 2345 softc->last_io_resid = resid; 2346 softc->last_resid_was_io = 1; 2347 } else { 2348 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2349 sizeof (struct scsi_sense_data)); 2350 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2351 (int) csio->cdb_len); 2352 softc->last_ctl_resid = resid; 2353 softc->last_resid_was_io = 0; 2354 } 2355 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2356 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2357 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2358 sense_key, asc, ascq, status, 2359 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2360 } else { 2361 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2362 ("Cam Status 0x%x\n", status)); 2363 } 2364 2365 switch (status) { 2366 case CAM_REQ_CMP: 2367 return (0); 2368 case CAM_SCSI_STATUS_ERROR: 2369 /* 2370 * If a read/write command, we handle it here. 2371 */ 2372 if (CCB_Type(csio) != SA_CCB_WAITING) { 2373 break; 2374 } 2375 /* 2376 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2377 * on a non read/write command, we assume it's not an error 2378 * and propagate the residule and return. 2379 */ 2380 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2381 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2382 csio->resid = resid; 2383 QFRLS(ccb); 2384 return (0); 2385 } 2386 /* 2387 * Otherwise, we let the common code handle this. 2388 */ 2389 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2390 2391 /* 2392 * XXX: To Be Fixed 2393 * We cannot depend upon CAM honoring retry counts for these. 2394 */ 2395 case CAM_SCSI_BUS_RESET: 2396 case CAM_BDR_SENT: 2397 if (ccb->ccb_h.retry_count <= 0) { 2398 return (EIO); 2399 break; 2400 } 2401 /* FALLTHROUGH */ 2402 default: 2403 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2404 } 2405 2406 /* 2407 * Handle filemark, end of tape, mismatched record sizes.... 2408 * From this point out, we're only handling read/write cases. 2409 * Handle writes && reads differently. 2410 */ 2411 2412 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2413 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2414 csio->resid = resid; 2415 error = ENOSPC; 2416 } else if (sense->flags & SSD_EOM) { 2417 softc->flags |= SA_FLAG_EOM_PENDING; 2418 /* 2419 * Grotesque as it seems, the few times 2420 * I've actually seen a non-zero resid, 2421 * the tape drive actually lied and had 2422 * writtent all the data!. 2423 */ 2424 csio->resid = 0; 2425 } 2426 } else { 2427 csio->resid = resid; 2428 if (sense_key == SSD_KEY_BLANK_CHECK) { 2429 if (softc->quirks & SA_QUIRK_1FM) { 2430 error = 0; 2431 softc->flags |= SA_FLAG_EOM_PENDING; 2432 } else { 2433 error = EIO; 2434 } 2435 } else if (sense->flags & SSD_FILEMARK) { 2436 if (softc->flags & SA_FLAG_FIXED) { 2437 error = -1; 2438 softc->flags |= SA_FLAG_EOF_PENDING; 2439 } 2440 /* 2441 * Unconditionally, if we detected a filemark on a read, 2442 * mark that we've run moved a file ahead. 2443 */ 2444 if (softc->fileno != (daddr_t) -1) { 2445 softc->fileno++; 2446 softc->blkno = 0; 2447 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2448 } 2449 } 2450 } 2451 2452 /* 2453 * Incorrect Length usually applies to read, but can apply to writes. 2454 */ 2455 if (error == 0 && (sense->flags & SSD_ILI)) { 2456 if (info < 0) { 2457 xpt_print_path(csio->ccb_h.path); 2458 kprintf(toobig, csio->dxfer_len - info); 2459 csio->resid = csio->dxfer_len; 2460 error = EIO; 2461 } else { 2462 csio->resid = resid; 2463 if (softc->flags & SA_FLAG_FIXED) { 2464 softc->flags |= SA_FLAG_EIO_PENDING; 2465 } 2466 /* 2467 * Bump the block number if we hadn't seen a filemark. 2468 * Do this independent of errors (we've moved anyway). 2469 */ 2470 if ((sense->flags & SSD_FILEMARK) == 0) { 2471 if (softc->blkno != (daddr_t) -1) { 2472 softc->blkno++; 2473 csio->ccb_h.ccb_pflags |= 2474 SA_POSITION_UPDATED; 2475 } 2476 } 2477 } 2478 } 2479 2480 if (error <= 0) { 2481 /* 2482 * Unfreeze the queue if frozen as we're not returning anything 2483 * to our waiters that would indicate an I/O error has occurred 2484 * (yet). 2485 */ 2486 QFRLS(ccb); 2487 error = 0; 2488 } 2489 return (error); 2490 } 2491 2492 static int 2493 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2494 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2495 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2496 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2497 sa_comp_t *tcs) 2498 { 2499 union ccb *ccb; 2500 void *mode_buffer; 2501 struct scsi_mode_header_6 *mode_hdr; 2502 struct scsi_mode_blk_desc *mode_blk; 2503 int mode_buffer_len; 2504 struct sa_softc *softc; 2505 u_int8_t cpage; 2506 int error; 2507 cam_status status; 2508 2509 softc = (struct sa_softc *)periph->softc; 2510 ccb = cam_periph_getccb(periph, 1); 2511 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2512 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2513 else 2514 cpage = SA_DATA_COMPRESSION_PAGE; 2515 2516 retry: 2517 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2518 2519 if (params_to_get & SA_PARAM_COMPRESSION) { 2520 if (softc->quirks & SA_QUIRK_NOCOMP) { 2521 *comp_supported = FALSE; 2522 params_to_get &= ~SA_PARAM_COMPRESSION; 2523 } else 2524 mode_buffer_len += sizeof (sa_comp_t); 2525 } 2526 2527 mode_buffer = kmalloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO); 2528 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2529 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2530 2531 /* it is safe to retry this */ 2532 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2533 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2534 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2535 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2536 2537 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2538 &softc->device_stats); 2539 QFRLS(ccb); 2540 2541 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2542 2543 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2544 /* 2545 * Hmm. Let's see if we can try another page... 2546 * If we've already done that, give up on compression 2547 * for this device and remember this for the future 2548 * and attempt the request without asking for compression 2549 * info. 2550 */ 2551 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2552 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2553 goto retry; 2554 } 2555 softc->quirks |= SA_QUIRK_NOCOMP; 2556 kfree(mode_buffer, M_TEMP); 2557 goto retry; 2558 } else if (status == CAM_SCSI_STATUS_ERROR) { 2559 /* Tell the user about the fatal error. */ 2560 scsi_sense_print(&ccb->csio); 2561 goto sagetparamsexit; 2562 } 2563 2564 /* 2565 * If the user only wants the compression information, and 2566 * the device doesn't send back the block descriptor, it's 2567 * no big deal. If the user wants more than just 2568 * compression, though, and the device doesn't pass back the 2569 * block descriptor, we need to send another mode sense to 2570 * get the block descriptor. 2571 */ 2572 if ((mode_hdr->blk_desc_len == 0) && 2573 (params_to_get & SA_PARAM_COMPRESSION) && 2574 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2575 2576 /* 2577 * Decrease the mode buffer length by the size of 2578 * the compression page, to make sure the data 2579 * there doesn't get overwritten. 2580 */ 2581 mode_buffer_len -= sizeof (sa_comp_t); 2582 2583 /* 2584 * Now move the compression page that we presumably 2585 * got back down the memory chunk a little bit so 2586 * it doesn't get spammed. 2587 */ 2588 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2589 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2590 2591 /* 2592 * Now, we issue another mode sense and just ask 2593 * for the block descriptor, etc. 2594 */ 2595 2596 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2597 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2598 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2599 SCSIOP_TIMEOUT); 2600 2601 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2602 &softc->device_stats); 2603 QFRLS(ccb); 2604 2605 if (error != 0) 2606 goto sagetparamsexit; 2607 } 2608 2609 if (params_to_get & SA_PARAM_BLOCKSIZE) 2610 *blocksize = scsi_3btoul(mode_blk->blklen); 2611 2612 if (params_to_get & SA_PARAM_NUMBLOCKS) 2613 *numblocks = scsi_3btoul(mode_blk->nblocks); 2614 2615 if (params_to_get & SA_PARAM_BUFF_MODE) 2616 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2617 2618 if (params_to_get & SA_PARAM_DENSITY) 2619 *density = mode_blk->density; 2620 2621 if (params_to_get & SA_PARAM_WP) 2622 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2623 2624 if (params_to_get & SA_PARAM_SPEED) 2625 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2626 2627 if (params_to_get & SA_PARAM_COMPRESSION) { 2628 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2629 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2630 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2631 *comp_supported = 2632 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2633 *comp_enabled = 2634 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2635 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2636 } else { 2637 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2638 /* 2639 * We don't really know whether this device supports 2640 * Data Compression if the the algorithm field is 2641 * zero. Just say we do. 2642 */ 2643 *comp_supported = TRUE; 2644 *comp_enabled = 2645 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2646 *comp_algorithm = cp->sel_comp_alg; 2647 } 2648 if (tcs != NULL) 2649 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2650 } 2651 2652 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2653 int idx; 2654 char *xyz = mode_buffer; 2655 xpt_print_path(periph->path); 2656 kprintf("Mode Sense Data="); 2657 for (idx = 0; idx < mode_buffer_len; idx++) 2658 kprintf(" 0x%02x", xyz[idx] & 0xff); 2659 kprintf("\n"); 2660 } 2661 2662 sagetparamsexit: 2663 2664 xpt_release_ccb(ccb); 2665 kfree(mode_buffer, M_TEMP); 2666 return (error); 2667 } 2668 2669 /* 2670 * The purpose of this function is to set one of four different parameters 2671 * for a tape drive: 2672 * - blocksize 2673 * - density 2674 * - compression / compression algorithm 2675 * - buffering mode 2676 * 2677 * The assumption is that this will be called from saioctl(), and therefore 2678 * from a process context. Thus the waiting malloc calls below. If that 2679 * assumption ever changes, the malloc calls should be changed to be 2680 * NOWAIT mallocs. 2681 * 2682 * Any or all of the four parameters may be set when this function is 2683 * called. It should handle setting more than one parameter at once. 2684 */ 2685 static int 2686 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2687 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2688 u_int32_t sense_flags) 2689 { 2690 struct sa_softc *softc; 2691 u_int32_t current_blocksize; 2692 u_int32_t current_calg; 2693 u_int8_t current_density; 2694 u_int8_t current_speed; 2695 int comp_enabled, comp_supported; 2696 void *mode_buffer; 2697 int mode_buffer_len; 2698 struct scsi_mode_header_6 *mode_hdr; 2699 struct scsi_mode_blk_desc *mode_blk; 2700 sa_comp_t *ccomp, *cpage; 2701 int buff_mode; 2702 union ccb *ccb = NULL; 2703 int error; 2704 2705 softc = (struct sa_softc *)periph->softc; 2706 2707 ccomp = kmalloc(sizeof (sa_comp_t), M_TEMP, M_INTWAIT); 2708 2709 /* 2710 * Since it doesn't make sense to set the number of blocks, or 2711 * write protection, we won't try to get the current value. We 2712 * always want to get the blocksize, so we can set it back to the 2713 * proper value. 2714 */ 2715 error = sagetparams(periph, 2716 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2717 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2718 ¤t_speed, &comp_supported, &comp_enabled, 2719 ¤t_calg, ccomp); 2720 2721 if (error != 0) { 2722 kfree(ccomp, M_TEMP); 2723 return (error); 2724 } 2725 2726 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2727 if (params_to_set & SA_PARAM_COMPRESSION) 2728 mode_buffer_len += sizeof (sa_comp_t); 2729 2730 mode_buffer = kmalloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO); 2731 2732 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2733 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2734 2735 ccb = cam_periph_getccb(periph, 1); 2736 2737 retry: 2738 2739 if (params_to_set & SA_PARAM_COMPRESSION) { 2740 if (mode_blk) { 2741 cpage = (sa_comp_t *)&mode_blk[1]; 2742 } else { 2743 cpage = (sa_comp_t *)&mode_hdr[1]; 2744 } 2745 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2746 cpage->hdr.pagecode &= ~0x80; 2747 } else 2748 cpage = NULL; 2749 2750 /* 2751 * If the caller wants us to set the blocksize, use the one they 2752 * pass in. Otherwise, use the blocksize we got back from the 2753 * mode select above. 2754 */ 2755 if (mode_blk) { 2756 if (params_to_set & SA_PARAM_BLOCKSIZE) 2757 scsi_ulto3b(blocksize, mode_blk->blklen); 2758 else 2759 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2760 2761 /* 2762 * Set density if requested, else preserve old density. 2763 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2764 * devices, else density we've latched up in our softc. 2765 */ 2766 if (params_to_set & SA_PARAM_DENSITY) { 2767 mode_blk->density = density; 2768 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2769 mode_blk->density = SCSI_SAME_DENSITY; 2770 } else { 2771 mode_blk->density = softc->media_density; 2772 } 2773 } 2774 2775 /* 2776 * For mode selects, these two fields must be zero. 2777 */ 2778 mode_hdr->data_length = 0; 2779 mode_hdr->medium_type = 0; 2780 2781 /* set the speed to the current value */ 2782 mode_hdr->dev_spec = current_speed; 2783 2784 /* set single-initiator buffering mode */ 2785 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2786 2787 if (mode_blk) 2788 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2789 else 2790 mode_hdr->blk_desc_len = 0; 2791 2792 /* 2793 * First, if the user wants us to set the compression algorithm or 2794 * just turn compression on, check to make sure that this drive 2795 * supports compression. 2796 */ 2797 if (params_to_set & SA_PARAM_COMPRESSION) { 2798 /* 2799 * If the compression algorithm is 0, disable compression. 2800 * If the compression algorithm is non-zero, enable 2801 * compression and set the compression type to the 2802 * specified compression algorithm, unless the algorithm is 2803 * MT_COMP_ENABLE. In that case, we look at the 2804 * compression algorithm that is currently set and if it is 2805 * non-zero, we leave it as-is. If it is zero, and we have 2806 * saved a compression algorithm from a time when 2807 * compression was enabled before, set the compression to 2808 * the saved value. 2809 */ 2810 switch (ccomp->hdr.pagecode & ~0x80) { 2811 case SA_DATA_COMPRESSION_PAGE: 2812 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2813 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2814 if (calg == 0) { 2815 /* 2816 * Disable compression, but leave the 2817 * decompression and the capability bit 2818 * alone. 2819 */ 2820 dcp->dce_and_dcc = SA_DCP_DCC; 2821 dcp->dde_and_red |= SA_DCP_DDE; 2822 break; 2823 } 2824 /* enable compression && decompression */ 2825 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2826 dcp->dde_and_red |= SA_DCP_DDE; 2827 /* 2828 * If there, use compression algorithm from caller. 2829 * Otherwise, if there's a saved compression algorithm 2830 * and there is no current algorithm, use the saved 2831 * algorithm. Else parrot back what we got and hope 2832 * for the best. 2833 */ 2834 if (calg != MT_COMP_ENABLE) { 2835 scsi_ulto4b(calg, dcp->comp_algorithm); 2836 scsi_ulto4b(calg, dcp->decomp_algorithm); 2837 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2838 softc->saved_comp_algorithm != 0) { 2839 scsi_ulto4b(softc->saved_comp_algorithm, 2840 dcp->comp_algorithm); 2841 scsi_ulto4b(softc->saved_comp_algorithm, 2842 dcp->decomp_algorithm); 2843 } 2844 break; 2845 } 2846 case SA_DEVICE_CONFIGURATION_PAGE: 2847 { 2848 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2849 if (calg == 0) { 2850 dcp->sel_comp_alg = SA_COMP_NONE; 2851 break; 2852 } 2853 if (calg != MT_COMP_ENABLE) { 2854 dcp->sel_comp_alg = calg; 2855 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2856 softc->saved_comp_algorithm != 0) { 2857 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2858 } 2859 break; 2860 } 2861 default: 2862 /* 2863 * The drive doesn't seem to support compression, 2864 * so turn off the set compression bit. 2865 */ 2866 params_to_set &= ~SA_PARAM_COMPRESSION; 2867 xpt_print_path(periph->path); 2868 kprintf("device does not seem to support compression\n"); 2869 2870 /* 2871 * If that was the only thing the user wanted us to set, 2872 * clean up allocated resources and return with 2873 * 'operation not supported'. 2874 */ 2875 if (params_to_set == SA_PARAM_NONE) { 2876 kfree(mode_buffer, M_TEMP); 2877 xpt_release_ccb(ccb); 2878 return (ENODEV); 2879 } 2880 2881 /* 2882 * That wasn't the only thing the user wanted us to set. 2883 * So, decrease the stated mode buffer length by the 2884 * size of the compression mode page. 2885 */ 2886 mode_buffer_len -= sizeof(sa_comp_t); 2887 } 2888 } 2889 2890 /* It is safe to retry this operation */ 2891 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2892 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2893 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2894 2895 error = cam_periph_runccb(ccb, saerror, 0, 2896 sense_flags, &softc->device_stats); 2897 QFRLS(ccb); 2898 2899 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2900 int idx; 2901 char *xyz = mode_buffer; 2902 xpt_print_path(periph->path); 2903 kprintf("Err%d, Mode Select Data=", error); 2904 for (idx = 0; idx < mode_buffer_len; idx++) 2905 kprintf(" 0x%02x", xyz[idx] & 0xff); 2906 kprintf("\n"); 2907 } 2908 2909 2910 if (error) { 2911 /* 2912 * If we can, try without setting density/blocksize. 2913 */ 2914 if (mode_blk) { 2915 if ((params_to_set & 2916 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2917 mode_blk = NULL; 2918 goto retry; 2919 } 2920 } else { 2921 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2922 cpage = (sa_comp_t *)&mode_blk[1]; 2923 } 2924 2925 /* 2926 * If we were setting the blocksize, and that failed, we 2927 * want to set it to its original value. If we weren't 2928 * setting the blocksize, we don't want to change it. 2929 */ 2930 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2931 2932 /* 2933 * Set density if requested, else preserve old density. 2934 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2935 * devices, else density we've latched up in our softc. 2936 */ 2937 if (params_to_set & SA_PARAM_DENSITY) { 2938 mode_blk->density = current_density; 2939 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2940 mode_blk->density = SCSI_SAME_DENSITY; 2941 } else { 2942 mode_blk->density = softc->media_density; 2943 } 2944 2945 if (params_to_set & SA_PARAM_COMPRESSION) 2946 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2947 2948 /* 2949 * The retry count is the only CCB field that might have been 2950 * changed that we care about, so reset it back to 1. 2951 */ 2952 ccb->ccb_h.retry_count = 1; 2953 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2954 &softc->device_stats); 2955 QFRLS(ccb); 2956 } 2957 2958 xpt_release_ccb(ccb); 2959 2960 if (ccomp != NULL) 2961 kfree(ccomp, M_TEMP); 2962 2963 if (params_to_set & SA_PARAM_COMPRESSION) { 2964 if (error) { 2965 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2966 /* 2967 * Even if we get an error setting compression, 2968 * do not say that we don't support it. We could 2969 * have been wrong, or it may be media specific. 2970 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2971 */ 2972 softc->saved_comp_algorithm = softc->comp_algorithm; 2973 softc->comp_algorithm = 0; 2974 } else { 2975 softc->flags |= SA_FLAG_COMP_ENABLED; 2976 softc->comp_algorithm = calg; 2977 } 2978 } 2979 2980 kfree(mode_buffer, M_TEMP); 2981 return (error); 2982 } 2983 2984 static void 2985 saprevent(struct cam_periph *periph, int action) 2986 { 2987 struct sa_softc *softc; 2988 union ccb *ccb; 2989 int error, sf; 2990 2991 softc = (struct sa_softc *)periph->softc; 2992 2993 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2994 return; 2995 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2996 return; 2997 2998 /* 2999 * We can be quiet about illegal requests. 3000 */ 3001 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3002 sf = 0; 3003 } else 3004 sf = SF_QUIET_IR; 3005 3006 ccb = cam_periph_getccb(periph, 1); 3007 3008 /* It is safe to retry this operation */ 3009 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3010 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3011 3012 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 3013 QFRLS(ccb); 3014 if (error == 0) { 3015 if (action == PR_ALLOW) 3016 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3017 else 3018 softc->flags |= SA_FLAG_TAPE_LOCKED; 3019 } 3020 3021 xpt_release_ccb(ccb); 3022 } 3023 3024 static int 3025 sarewind(struct cam_periph *periph) 3026 { 3027 union ccb *ccb; 3028 struct sa_softc *softc; 3029 int error; 3030 3031 softc = (struct sa_softc *)periph->softc; 3032 3033 ccb = cam_periph_getccb(periph, 1); 3034 3035 /* It is safe to retry this operation */ 3036 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3037 SSD_FULL_SIZE, REWIND_TIMEOUT); 3038 3039 softc->dsreg = MTIO_DSREG_REW; 3040 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3041 softc->dsreg = MTIO_DSREG_REST; 3042 3043 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3044 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3045 3046 xpt_release_ccb(ccb); 3047 if (error == 0) 3048 softc->fileno = softc->blkno = (daddr_t) 0; 3049 else 3050 softc->fileno = softc->blkno = (daddr_t) -1; 3051 return (error); 3052 } 3053 3054 static int 3055 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3056 { 3057 union ccb *ccb; 3058 struct sa_softc *softc; 3059 int error; 3060 3061 softc = (struct sa_softc *)periph->softc; 3062 3063 ccb = cam_periph_getccb(periph, 1); 3064 3065 /* This cannot be retried */ 3066 3067 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3068 SSD_FULL_SIZE, SPACE_TIMEOUT); 3069 3070 /* 3071 * Clear residual because we will be using it. 3072 */ 3073 softc->last_ctl_resid = 0; 3074 3075 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3076 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3077 softc->dsreg = MTIO_DSREG_REST; 3078 3079 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3080 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3081 3082 xpt_release_ccb(ccb); 3083 3084 /* 3085 * If a spacing operation has failed, we need to invalidate 3086 * this mount. 3087 * 3088 * If the spacing operation was setmarks or to end of recorded data, 3089 * we no longer know our relative position. 3090 * 3091 * If the spacing operations was spacing files in reverse, we 3092 * take account of the residual, but still check against less 3093 * than zero- if we've gone negative, we must have hit BOT. 3094 * 3095 * If the spacing operations was spacing records in reverse and 3096 * we have a residual, we've either hit BOT or hit a filemark. 3097 * In the former case, we know our new record number (0). In 3098 * the latter case, we have absolutely no idea what the real 3099 * record number is- we've stopped between the end of the last 3100 * record in the previous file and the filemark that stopped 3101 * our spacing backwards. 3102 */ 3103 if (error) { 3104 softc->fileno = softc->blkno = (daddr_t) -1; 3105 } else if (code == SS_SETMARKS || code == SS_EOD) { 3106 softc->fileno = softc->blkno = (daddr_t) -1; 3107 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3108 softc->fileno += (count - softc->last_ctl_resid); 3109 if (softc->fileno < 0) /* we must of hit BOT */ 3110 softc->fileno = 0; 3111 softc->blkno = 0; 3112 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3113 softc->blkno += (count - softc->last_ctl_resid); 3114 if (count < 0) { 3115 if (softc->last_ctl_resid || softc->blkno < 0) { 3116 if (softc->fileno == 0) { 3117 softc->blkno = 0; 3118 } else { 3119 softc->blkno = (daddr_t) -1; 3120 } 3121 } 3122 } 3123 } 3124 return (error); 3125 } 3126 3127 static int 3128 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3129 { 3130 union ccb *ccb; 3131 struct sa_softc *softc; 3132 int error, nwm = 0; 3133 3134 softc = (struct sa_softc *)periph->softc; 3135 3136 ccb = cam_periph_getccb(periph, 1); 3137 /* 3138 * Clear residual because we will be using it. 3139 */ 3140 softc->last_ctl_resid = 0; 3141 3142 softc->dsreg = MTIO_DSREG_FMK; 3143 /* this *must* not be retried */ 3144 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3145 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3146 softc->dsreg = MTIO_DSREG_REST; 3147 3148 3149 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3150 3151 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3152 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3153 3154 if (error == 0 && nmarks) { 3155 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3156 nwm = nmarks - softc->last_ctl_resid; 3157 softc->filemarks += nwm; 3158 } 3159 3160 xpt_release_ccb(ccb); 3161 3162 /* 3163 * Update relative positions (if we're doing that). 3164 */ 3165 if (error) { 3166 softc->fileno = softc->blkno = (daddr_t) -1; 3167 } else if (softc->fileno != (daddr_t) -1) { 3168 softc->fileno += nwm; 3169 softc->blkno = 0; 3170 } 3171 return (error); 3172 } 3173 3174 static int 3175 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3176 { 3177 struct scsi_tape_position_data loc; 3178 union ccb *ccb; 3179 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3180 int error; 3181 3182 /* 3183 * We try and flush any buffered writes here if we were writing 3184 * and we're trying to get hardware block position. It eats 3185 * up performance substantially, but I'm wary of drive firmware. 3186 * 3187 * I think that *logical* block position is probably okay- 3188 * but hardware block position might have to wait for data 3189 * to hit media to be valid. Caveat Emptor. 3190 */ 3191 3192 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3193 error = sawritefilemarks(periph, 0, 0); 3194 if (error && error != EACCES) 3195 return (error); 3196 } 3197 3198 ccb = cam_periph_getccb(periph, 1); 3199 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3200 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3201 softc->dsreg = MTIO_DSREG_RBSY; 3202 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3203 softc->dsreg = MTIO_DSREG_REST; 3204 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3205 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3206 3207 if (error == 0) { 3208 if (loc.flags & SA_RPOS_UNCERTAIN) { 3209 error = EINVAL; /* nothing is certain */ 3210 } else { 3211 *blkptr = scsi_4btoul(loc.firstblk); 3212 } 3213 } 3214 3215 xpt_release_ccb(ccb); 3216 return (error); 3217 } 3218 3219 static int 3220 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3221 { 3222 union ccb *ccb; 3223 struct sa_softc *softc; 3224 int error; 3225 3226 /* 3227 * We used to try and flush any buffered writes here. 3228 * Now we push this onto user applications to either 3229 * flush the pending writes themselves (via a zero count 3230 * WRITE FILEMARKS command) or they can trust their tape 3231 * drive to do this correctly for them. 3232 */ 3233 3234 softc = (struct sa_softc *)periph->softc; 3235 ccb = cam_periph_getccb(periph, 1); 3236 3237 3238 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3239 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3240 3241 3242 softc->dsreg = MTIO_DSREG_POS; 3243 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3244 softc->dsreg = MTIO_DSREG_REST; 3245 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3246 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3247 xpt_release_ccb(ccb); 3248 /* 3249 * Note relative file && block number position as now unknown. 3250 */ 3251 softc->fileno = softc->blkno = (daddr_t) -1; 3252 return (error); 3253 } 3254 3255 static int 3256 saretension(struct cam_periph *periph) 3257 { 3258 union ccb *ccb; 3259 struct sa_softc *softc; 3260 int error; 3261 3262 softc = (struct sa_softc *)periph->softc; 3263 3264 ccb = cam_periph_getccb(periph, 1); 3265 3266 /* It is safe to retry this operation */ 3267 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3268 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3269 3270 softc->dsreg = MTIO_DSREG_TEN; 3271 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3272 softc->dsreg = MTIO_DSREG_REST; 3273 3274 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3275 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3276 xpt_release_ccb(ccb); 3277 if (error == 0) 3278 softc->fileno = softc->blkno = (daddr_t) 0; 3279 else 3280 softc->fileno = softc->blkno = (daddr_t) -1; 3281 return (error); 3282 } 3283 3284 static int 3285 sareservereleaseunit(struct cam_periph *periph, int reserve) 3286 { 3287 union ccb *ccb; 3288 struct sa_softc *softc; 3289 int error; 3290 3291 softc = (struct sa_softc *)periph->softc; 3292 ccb = cam_periph_getccb(periph, 1); 3293 3294 /* It is safe to retry this operation */ 3295 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3296 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3297 softc->dsreg = MTIO_DSREG_RBSY; 3298 error = cam_periph_runccb(ccb, saerror, 0, 3299 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3300 softc->dsreg = MTIO_DSREG_REST; 3301 QFRLS(ccb); 3302 xpt_release_ccb(ccb); 3303 3304 /* 3305 * If the error was Illegal Request, then the device doesn't support 3306 * RESERVE/RELEASE. This is not an error. 3307 */ 3308 if (error == EINVAL) { 3309 error = 0; 3310 } 3311 3312 return (error); 3313 } 3314 3315 static int 3316 saloadunload(struct cam_periph *periph, int load) 3317 { 3318 union ccb *ccb; 3319 struct sa_softc *softc; 3320 int error; 3321 3322 softc = (struct sa_softc *)periph->softc; 3323 3324 ccb = cam_periph_getccb(periph, 1); 3325 3326 /* It is safe to retry this operation */ 3327 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3328 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3329 3330 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3331 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3332 softc->dsreg = MTIO_DSREG_REST; 3333 QFRLS(ccb); 3334 xpt_release_ccb(ccb); 3335 3336 if (error || load == 0) 3337 softc->fileno = softc->blkno = (daddr_t) -1; 3338 else if (error == 0) 3339 softc->fileno = softc->blkno = (daddr_t) 0; 3340 return (error); 3341 } 3342 3343 static int 3344 saerase(struct cam_periph *periph, int longerase) 3345 { 3346 3347 union ccb *ccb; 3348 struct sa_softc *softc; 3349 int error; 3350 3351 softc = (struct sa_softc *)periph->softc; 3352 3353 ccb = cam_periph_getccb(periph, 1); 3354 3355 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3356 SSD_FULL_SIZE, ERASE_TIMEOUT); 3357 3358 softc->dsreg = MTIO_DSREG_ZER; 3359 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3360 softc->dsreg = MTIO_DSREG_REST; 3361 3362 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3363 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3364 xpt_release_ccb(ccb); 3365 return (error); 3366 } 3367 3368 #endif /* _KERNEL */ 3369 3370 /* 3371 * Read tape block limits command. 3372 */ 3373 void 3374 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3375 void (*cbfcnp)(struct cam_periph *, union ccb *), 3376 u_int8_t tag_action, 3377 struct scsi_read_block_limits_data *rlimit_buf, 3378 u_int8_t sense_len, u_int32_t timeout) 3379 { 3380 struct scsi_read_block_limits *scsi_cmd; 3381 3382 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3383 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3384 sizeof(*scsi_cmd), timeout); 3385 3386 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3387 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3388 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3389 } 3390 3391 void 3392 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3393 void (*cbfcnp)(struct cam_periph *, union ccb *), 3394 u_int8_t tag_action, int readop, int sli, 3395 int fixed, u_int32_t length, u_int8_t *data_ptr, 3396 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3397 { 3398 struct scsi_sa_rw *scsi_cmd; 3399 3400 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3401 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3402 scsi_cmd->sli_fixed = 0; 3403 if (sli && readop) 3404 scsi_cmd->sli_fixed |= SAR_SLI; 3405 if (fixed) 3406 scsi_cmd->sli_fixed |= SARW_FIXED; 3407 scsi_ulto3b(length, scsi_cmd->length); 3408 scsi_cmd->control = 0; 3409 3410 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3411 tag_action, data_ptr, dxfer_len, sense_len, 3412 sizeof(*scsi_cmd), timeout); 3413 } 3414 3415 void 3416 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3417 void (*cbfcnp)(struct cam_periph *, union ccb *), 3418 u_int8_t tag_action, int immediate, int eot, 3419 int reten, int load, u_int8_t sense_len, 3420 u_int32_t timeout) 3421 { 3422 struct scsi_load_unload *scsi_cmd; 3423 3424 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3425 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3426 scsi_cmd->opcode = LOAD_UNLOAD; 3427 if (immediate) 3428 scsi_cmd->immediate = SLU_IMMED; 3429 if (eot) 3430 scsi_cmd->eot_reten_load |= SLU_EOT; 3431 if (reten) 3432 scsi_cmd->eot_reten_load |= SLU_RETEN; 3433 if (load) 3434 scsi_cmd->eot_reten_load |= SLU_LOAD; 3435 3436 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3437 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3438 } 3439 3440 void 3441 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3442 void (*cbfcnp)(struct cam_periph *, union ccb *), 3443 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3444 u_int32_t timeout) 3445 { 3446 struct scsi_rewind *scsi_cmd; 3447 3448 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3449 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3450 scsi_cmd->opcode = REWIND; 3451 if (immediate) 3452 scsi_cmd->immediate = SREW_IMMED; 3453 3454 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3455 0, sense_len, sizeof(*scsi_cmd), timeout); 3456 } 3457 3458 void 3459 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3460 void (*cbfcnp)(struct cam_periph *, union ccb *), 3461 u_int8_t tag_action, scsi_space_code code, 3462 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3463 { 3464 struct scsi_space *scsi_cmd; 3465 3466 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3467 scsi_cmd->opcode = SPACE; 3468 scsi_cmd->code = code; 3469 scsi_ulto3b(count, scsi_cmd->count); 3470 scsi_cmd->control = 0; 3471 3472 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3473 0, sense_len, sizeof(*scsi_cmd), timeout); 3474 } 3475 3476 void 3477 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3478 void (*cbfcnp)(struct cam_periph *, union ccb *), 3479 u_int8_t tag_action, int immediate, int setmark, 3480 u_int32_t num_marks, u_int8_t sense_len, 3481 u_int32_t timeout) 3482 { 3483 struct scsi_write_filemarks *scsi_cmd; 3484 3485 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3486 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3487 scsi_cmd->opcode = WRITE_FILEMARKS; 3488 if (immediate) 3489 scsi_cmd->byte2 |= SWFMRK_IMMED; 3490 if (setmark) 3491 scsi_cmd->byte2 |= SWFMRK_WSMK; 3492 3493 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3494 3495 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3496 0, sense_len, sizeof(*scsi_cmd), timeout); 3497 } 3498 3499 /* 3500 * The reserve and release unit commands differ only by their opcodes. 3501 */ 3502 void 3503 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3504 void (*cbfcnp)(struct cam_periph *, union ccb *), 3505 u_int8_t tag_action, int third_party, 3506 int third_party_id, u_int8_t sense_len, 3507 u_int32_t timeout, int reserve) 3508 { 3509 struct scsi_reserve_release_unit *scsi_cmd; 3510 3511 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3512 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3513 3514 if (reserve) 3515 scsi_cmd->opcode = RESERVE_UNIT; 3516 else 3517 scsi_cmd->opcode = RELEASE_UNIT; 3518 3519 if (third_party) { 3520 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3521 scsi_cmd->lun_thirdparty |= 3522 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3523 } 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_erase(struct ccb_scsiio *csio, u_int32_t retries, 3531 void (*cbfcnp)(struct cam_periph *, union ccb *), 3532 u_int8_t tag_action, int immediate, int long_erase, 3533 u_int8_t sense_len, u_int32_t timeout) 3534 { 3535 struct scsi_erase *scsi_cmd; 3536 3537 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3538 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3539 3540 scsi_cmd->opcode = ERASE; 3541 3542 if (immediate) 3543 scsi_cmd->lun_imm_long |= SE_IMMED; 3544 3545 if (long_erase) 3546 scsi_cmd->lun_imm_long |= SE_LONG; 3547 3548 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3549 0, sense_len, sizeof(*scsi_cmd), timeout); 3550 } 3551 3552 /* 3553 * Read Tape Position command. 3554 */ 3555 void 3556 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3557 void (*cbfcnp)(struct cam_periph *, union ccb *), 3558 u_int8_t tag_action, int hardsoft, 3559 struct scsi_tape_position_data *sbp, 3560 u_int8_t sense_len, u_int32_t timeout) 3561 { 3562 struct scsi_tape_read_position *scmd; 3563 3564 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3565 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3566 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3567 bzero(scmd, sizeof(*scmd)); 3568 scmd->opcode = READ_POSITION; 3569 scmd->byte1 = hardsoft; 3570 } 3571 3572 /* 3573 * Set Tape Position command. 3574 */ 3575 void 3576 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3577 void (*cbfcnp)(struct cam_periph *, union ccb *), 3578 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3579 u_int8_t sense_len, u_int32_t timeout) 3580 { 3581 struct scsi_tape_locate *scmd; 3582 3583 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3584 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3585 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3586 bzero(scmd, sizeof(*scmd)); 3587 scmd->opcode = LOCATE; 3588 if (hardsoft) 3589 scmd->byte1 |= SA_SPOS_BT; 3590 scsi_ulto4b(blkno, scmd->blkaddr); 3591 } 3592