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sys/dev/scsipi/sd.c
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1 /* $NetBSD: sd.c,v 1.216.2.3 2004/09/11 12:55:11 he Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 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 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Originally written by Julian Elischer (julian@dialix.oz.au) 41 * for TRW Financial Systems for use under the MACH(2.5) operating system. 42 * 43 * TRW Financial Systems, in accordance with their agreement with Carnegie 44 * Mellon University, makes this software available to CMU to distribute 45 * or use in any manner that they see fit as long as this message is kept with 46 * the software. For this reason TFS also grants any other persons or 47 * organisations permission to use or modify this software. 48 * 49 * TFS supplies this software to be publicly redistributed 50 * on the understanding that TFS is not responsible for the correct 51 * functioning of this software in any circumstances. 52 * 53 * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.216.2.3 2004/09/11 12:55:11 he Exp $"); 58 59 #include "opt_scsi.h" 60 #include "rnd.h" 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/kernel.h> 65 #include <sys/file.h> 66 #include <sys/stat.h> 67 #include <sys/ioctl.h> 68 #include <sys/scsiio.h> 69 #include <sys/buf.h> 70 #include <sys/uio.h> 71 #include <sys/malloc.h> 72 #include <sys/errno.h> 73 #include <sys/device.h> 74 #include <sys/disklabel.h> 75 #include <sys/disk.h> 76 #include <sys/proc.h> 77 #include <sys/conf.h> 78 #include <sys/vnode.h> 79 #if NRND > 0 80 #include <sys/rnd.h> 81 #endif 82 83 #include <dev/scsipi/scsipi_all.h> 84 #include <dev/scsipi/scsi_all.h> 85 #include <dev/scsipi/scsipi_disk.h> 86 #include <dev/scsipi/scsi_disk.h> 87 #include <dev/scsipi/scsiconf.h> 88 #include <dev/scsipi/scsipi_base.h> 89 #include <dev/scsipi/sdvar.h> 90 91 #define SDUNIT(dev) DISKUNIT(dev) 92 #define SDPART(dev) DISKPART(dev) 93 #define SDMINOR(unit, part) DISKMINOR(unit, part) 94 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 95 96 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 97 98 int sdlock __P((struct sd_softc *)); 99 void sdunlock __P((struct sd_softc *)); 100 void sdminphys __P((struct buf *)); 101 void sdgetdefaultlabel __P((struct sd_softc *, struct disklabel *)); 102 void sdgetdisklabel __P((struct sd_softc *)); 103 void sdstart __P((struct scsipi_periph *)); 104 void sdrestart __P((void *)); 105 void sddone __P((struct scsipi_xfer *)); 106 void sd_shutdown __P((void *)); 107 int sd_reassign_blocks __P((struct sd_softc *, u_long)); 108 int sd_interpret_sense __P((struct scsipi_xfer *)); 109 110 int sd_mode_sense __P((struct sd_softc *, u_int8_t, void *, size_t, int, 111 int, int *)); 112 int sd_mode_select __P((struct sd_softc *, u_int8_t, void *, size_t, int, 113 int)); 114 int sd_get_simplifiedparms __P((struct sd_softc *, struct disk_parms *, 115 int)); 116 int sd_get_capacity __P((struct sd_softc *, struct disk_parms *, int)); 117 int sd_get_parms __P((struct sd_softc *, struct disk_parms *, int)); 118 int sd_get_parms_page4 __P((struct sd_softc *, struct disk_parms *, 119 int)); 120 int sd_get_parms_page5 __P((struct sd_softc *, struct disk_parms *, 121 int)); 122 123 int sd_flush __P((struct sd_softc *, int)); 124 int sd_getcache __P((struct sd_softc *, int *)); 125 int sd_setcache __P((struct sd_softc *, int)); 126 127 int sdmatch __P((struct device *, struct cfdata *, void *)); 128 void sdattach __P((struct device *, struct device *, void *)); 129 int sdactivate __P((struct device *, enum devact)); 130 int sddetach __P((struct device *, int)); 131 132 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 133 sdactivate); 134 135 extern struct cfdriver sd_cd; 136 137 const struct scsipi_inquiry_pattern sd_patterns[] = { 138 {T_DIRECT, T_FIXED, 139 "", "", ""}, 140 {T_DIRECT, T_REMOV, 141 "", "", ""}, 142 {T_OPTICAL, T_FIXED, 143 "", "", ""}, 144 {T_OPTICAL, T_REMOV, 145 "", "", ""}, 146 {T_SIMPLE_DIRECT, T_FIXED, 147 "", "", ""}, 148 {T_SIMPLE_DIRECT, T_REMOV, 149 "", "", ""}, 150 }; 151 152 dev_type_open(sdopen); 153 dev_type_close(sdclose); 154 dev_type_read(sdread); 155 dev_type_write(sdwrite); 156 dev_type_ioctl(sdioctl); 157 dev_type_strategy(sdstrategy); 158 dev_type_dump(sddump); 159 dev_type_size(sdsize); 160 161 const struct bdevsw sd_bdevsw = { 162 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 163 }; 164 165 const struct cdevsw sd_cdevsw = { 166 sdopen, sdclose, sdread, sdwrite, sdioctl, 167 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 168 }; 169 170 struct dkdriver sddkdriver = { sdstrategy }; 171 172 const struct scsipi_periphsw sd_switch = { 173 sd_interpret_sense, /* check our error handler first */ 174 sdstart, /* have a queue, served by this */ 175 NULL, /* have no async handler */ 176 sddone, /* deal with stats at interrupt time */ 177 }; 178 179 struct sd_mode_sense_data { 180 /* 181 * XXX 182 * We are not going to parse this as-is -- it just has to be large 183 * enough. 184 */ 185 union { 186 struct scsipi_mode_header small; 187 struct scsipi_mode_header_big big; 188 } header; 189 struct scsi_blk_desc blk_desc; 190 union scsi_disk_pages pages; 191 }; 192 193 /* 194 * The routine called by the low level scsi routine when it discovers 195 * A device suitable for this driver 196 */ 197 int 198 sdmatch(parent, match, aux) 199 struct device *parent; 200 struct cfdata *match; 201 void *aux; 202 { 203 struct scsipibus_attach_args *sa = aux; 204 int priority; 205 206 (void)scsipi_inqmatch(&sa->sa_inqbuf, 207 (caddr_t)sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 208 sizeof(sd_patterns[0]), &priority); 209 210 return (priority); 211 } 212 213 /* 214 * Attach routine common to atapi & scsi. 215 */ 216 void 217 sdattach(parent, self, aux) 218 struct device *parent, *self; 219 void *aux; 220 { 221 struct sd_softc *sd = (void *)self; 222 struct scsipibus_attach_args *sa = aux; 223 struct scsipi_periph *periph = sa->sa_periph; 224 int error, result; 225 struct disk_parms *dp = &sd->params; 226 char pbuf[9]; 227 228 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 229 230 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 231 if (sd->type == T_SIMPLE_DIRECT) 232 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 233 234 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 235 periph->periph_version == 0) 236 sd->flags |= SDF_ANCIENT; 237 238 bufq_alloc(&sd->buf_queue, 239 BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 240 241 callout_init(&sd->sc_callout); 242 243 /* 244 * Store information needed to contact our base driver 245 */ 246 sd->sc_periph = periph; 247 248 periph->periph_dev = &sd->sc_dev; 249 periph->periph_switch = &sd_switch; 250 251 /* 252 * Increase our openings to the maximum-per-periph 253 * supported by the adapter. This will either be 254 * clamped down or grown by the adapter if necessary. 255 */ 256 periph->periph_openings = 257 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 258 periph->periph_flags |= PERIPH_GROW_OPENINGS; 259 260 /* 261 * Initialize and attach the disk structure. 262 */ 263 sd->sc_dk.dk_driver = &sddkdriver; 264 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 265 disk_attach(&sd->sc_dk); 266 267 /* 268 * Use the subdriver to request information regarding the drive. 269 */ 270 aprint_naive("\n"); 271 aprint_normal("\n"); 272 273 error = scsipi_test_unit_ready(periph, 274 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 275 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 276 277 if (error) 278 result = SDGP_RESULT_OFFLINE; 279 else 280 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 281 aprint_normal("%s: ", sd->sc_dev.dv_xname); 282 switch (result) { 283 case SDGP_RESULT_OK: 284 format_bytes(pbuf, sizeof(pbuf), 285 (u_int64_t)dp->disksize * dp->blksize); 286 aprint_normal( 287 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 288 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 289 (unsigned long long)dp->disksize); 290 break; 291 292 case SDGP_RESULT_OFFLINE: 293 aprint_normal("drive offline"); 294 break; 295 296 case SDGP_RESULT_UNFORMATTED: 297 aprint_normal("unformatted media"); 298 break; 299 300 #ifdef DIAGNOSTIC 301 default: 302 panic("sdattach: unknown result from get_parms"); 303 break; 304 #endif 305 } 306 aprint_normal("\n"); 307 308 /* 309 * Establish a shutdown hook so that we can ensure that 310 * our data has actually made it onto the platter at 311 * shutdown time. Note that this relies on the fact 312 * that the shutdown hook code puts us at the head of 313 * the list (thus guaranteeing that our hook runs before 314 * our ancestors'). 315 */ 316 if ((sd->sc_sdhook = 317 shutdownhook_establish(sd_shutdown, sd)) == NULL) 318 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 319 sd->sc_dev.dv_xname); 320 321 #if NRND > 0 322 /* 323 * attach the device into the random source list 324 */ 325 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 326 RND_TYPE_DISK, 0); 327 #endif 328 } 329 330 int 331 sdactivate(self, act) 332 struct device *self; 333 enum devact act; 334 { 335 int rv = 0; 336 337 switch (act) { 338 case DVACT_ACTIVATE: 339 rv = EOPNOTSUPP; 340 break; 341 342 case DVACT_DEACTIVATE: 343 /* 344 * Nothing to do; we key off the device's DVF_ACTIVE. 345 */ 346 break; 347 } 348 return (rv); 349 } 350 351 int 352 sddetach(self, flags) 353 struct device *self; 354 int flags; 355 { 356 struct sd_softc *sd = (struct sd_softc *) self; 357 struct buf *bp; 358 int s, bmaj, cmaj, i, mn; 359 360 /* locate the major number */ 361 bmaj = bdevsw_lookup_major(&sd_bdevsw); 362 cmaj = cdevsw_lookup_major(&sd_cdevsw); 363 364 /* kill any pending restart */ 365 callout_stop(&sd->sc_callout); 366 367 s = splbio(); 368 369 /* Kill off any queued buffers. */ 370 while ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 371 bp->b_error = EIO; 372 bp->b_flags |= B_ERROR; 373 bp->b_resid = bp->b_bcount; 374 biodone(bp); 375 } 376 377 bufq_free(&sd->buf_queue); 378 379 /* Kill off any pending commands. */ 380 scsipi_kill_pending(sd->sc_periph); 381 382 splx(s); 383 384 /* Nuke the vnodes for any open instances */ 385 for (i = 0; i < MAXPARTITIONS; i++) { 386 mn = SDMINOR(self->dv_unit, i); 387 vdevgone(bmaj, mn, mn, VBLK); 388 vdevgone(cmaj, mn, mn, VCHR); 389 } 390 391 /* Detach from the disk list. */ 392 disk_detach(&sd->sc_dk); 393 394 /* Get rid of the shutdown hook. */ 395 shutdownhook_disestablish(sd->sc_sdhook); 396 397 #if NRND > 0 398 /* Unhook the entropy source. */ 399 rnd_detach_source(&sd->rnd_source); 400 #endif 401 402 return (0); 403 } 404 405 /* 406 * Wait interruptibly for an exclusive lock. 407 * 408 * XXX 409 * Several drivers do this; it should be abstracted and made MP-safe. 410 */ 411 int 412 sdlock(sd) 413 struct sd_softc *sd; 414 { 415 int error; 416 417 while ((sd->flags & SDF_LOCKED) != 0) { 418 sd->flags |= SDF_WANTED; 419 if ((error = tsleep(sd, PRIBIO | PCATCH, "sdlck", 0)) != 0) 420 return (error); 421 } 422 sd->flags |= SDF_LOCKED; 423 return (0); 424 } 425 426 /* 427 * Unlock and wake up any waiters. 428 */ 429 void 430 sdunlock(sd) 431 struct sd_softc *sd; 432 { 433 434 sd->flags &= ~SDF_LOCKED; 435 if ((sd->flags & SDF_WANTED) != 0) { 436 sd->flags &= ~SDF_WANTED; 437 wakeup(sd); 438 } 439 } 440 441 /* 442 * open the device. Make sure the partition info is a up-to-date as can be. 443 */ 444 int 445 sdopen(dev, flag, fmt, p) 446 dev_t dev; 447 int flag, fmt; 448 struct proc *p; 449 { 450 struct sd_softc *sd; 451 struct scsipi_periph *periph; 452 struct scsipi_adapter *adapt; 453 int unit, part; 454 int error; 455 456 unit = SDUNIT(dev); 457 if (unit >= sd_cd.cd_ndevs) 458 return (ENXIO); 459 sd = sd_cd.cd_devs[unit]; 460 if (sd == NULL) 461 return (ENXIO); 462 463 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 464 return (ENODEV); 465 466 periph = sd->sc_periph; 467 adapt = periph->periph_channel->chan_adapter; 468 part = SDPART(dev); 469 470 SC_DEBUG(periph, SCSIPI_DB1, 471 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 472 sd_cd.cd_ndevs, part)); 473 474 /* 475 * If this is the first open of this device, add a reference 476 * to the adapter. 477 */ 478 if (sd->sc_dk.dk_openmask == 0 && 479 (error = scsipi_adapter_addref(adapt)) != 0) 480 return (error); 481 482 if ((error = sdlock(sd)) != 0) 483 goto bad4; 484 485 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 486 /* 487 * If any partition is open, but the disk has been invalidated, 488 * disallow further opens of non-raw partition 489 */ 490 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 491 (part != RAW_PART || fmt != S_IFCHR)) { 492 error = EIO; 493 goto bad3; 494 } 495 } else { 496 int silent; 497 498 if (part == RAW_PART && fmt == S_IFCHR) 499 silent = XS_CTL_SILENT; 500 else 501 silent = 0; 502 503 /* Check that it is still responding and ok. */ 504 error = scsipi_test_unit_ready(periph, 505 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 506 silent); 507 508 /* 509 * Start the pack spinning if necessary. Always allow the 510 * raw parition to be opened, for raw IOCTLs. Data transfers 511 * will check for SDEV_MEDIA_LOADED. 512 */ 513 if (error == EIO) { 514 int error2; 515 516 error2 = scsipi_start(periph, SSS_START, silent); 517 switch (error2) { 518 case 0: 519 error = 0; 520 break; 521 case EIO: 522 case EINVAL: 523 break; 524 default: 525 error = error2; 526 break; 527 } 528 } 529 if (error) { 530 if (silent) 531 goto out; 532 goto bad3; 533 } 534 535 periph->periph_flags |= PERIPH_OPEN; 536 537 if (periph->periph_flags & PERIPH_REMOVABLE) { 538 /* Lock the pack in. */ 539 error = scsipi_prevent(periph, PR_PREVENT, 540 XS_CTL_IGNORE_ILLEGAL_REQUEST | 541 XS_CTL_IGNORE_MEDIA_CHANGE); 542 if (error) 543 goto bad; 544 } 545 546 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 547 int param_error; 548 periph->periph_flags |= PERIPH_MEDIA_LOADED; 549 550 /* 551 * Load the physical device parameters. 552 * 553 * Note that if media is present but unformatted, 554 * we allow the open (so that it can be formatted!). 555 * The drive should refuse real I/O, if the media is 556 * unformatted. 557 */ 558 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 559 == SDGP_RESULT_OFFLINE) { 560 error = ENXIO; 561 goto bad2; 562 } 563 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 564 565 /* Load the partition info if not already loaded. */ 566 if (param_error == 0) { 567 sdgetdisklabel(sd); 568 SC_DEBUG(periph, SCSIPI_DB3, 569 ("Disklabel loaded ")); 570 } 571 } 572 } 573 574 /* Check that the partition exists. */ 575 if (part != RAW_PART && 576 (part >= sd->sc_dk.dk_label->d_npartitions || 577 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 578 error = ENXIO; 579 goto bad; 580 } 581 582 out: /* Insure only one open at a time. */ 583 switch (fmt) { 584 case S_IFCHR: 585 sd->sc_dk.dk_copenmask |= (1 << part); 586 break; 587 case S_IFBLK: 588 sd->sc_dk.dk_bopenmask |= (1 << part); 589 break; 590 } 591 sd->sc_dk.dk_openmask = 592 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 593 594 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 595 sdunlock(sd); 596 return (0); 597 598 bad2: 599 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 600 601 bad: 602 if (sd->sc_dk.dk_openmask == 0) { 603 if (periph->periph_flags & PERIPH_REMOVABLE) 604 scsipi_prevent(periph, PR_ALLOW, 605 XS_CTL_IGNORE_ILLEGAL_REQUEST | 606 XS_CTL_IGNORE_MEDIA_CHANGE); 607 periph->periph_flags &= ~PERIPH_OPEN; 608 } 609 610 bad3: 611 sdunlock(sd); 612 bad4: 613 if (sd->sc_dk.dk_openmask == 0) 614 scsipi_adapter_delref(adapt); 615 return (error); 616 } 617 618 /* 619 * close the device.. only called if we are the LAST occurence of an open 620 * device. Convenient now but usually a pain. 621 */ 622 int 623 sdclose(dev, flag, fmt, p) 624 dev_t dev; 625 int flag, fmt; 626 struct proc *p; 627 { 628 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 629 struct scsipi_periph *periph = sd->sc_periph; 630 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 631 int part = SDPART(dev); 632 int error; 633 634 if ((error = sdlock(sd)) != 0) 635 return (error); 636 637 switch (fmt) { 638 case S_IFCHR: 639 sd->sc_dk.dk_copenmask &= ~(1 << part); 640 break; 641 case S_IFBLK: 642 sd->sc_dk.dk_bopenmask &= ~(1 << part); 643 break; 644 } 645 sd->sc_dk.dk_openmask = 646 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 647 648 if (sd->sc_dk.dk_openmask == 0) { 649 /* 650 * If the disk cache needs flushing, and the disk supports 651 * it, do it now. 652 */ 653 if ((sd->flags & SDF_DIRTY) != 0) { 654 if (sd_flush(sd, 0)) { 655 printf("%s: cache synchronization failed\n", 656 sd->sc_dev.dv_xname); 657 sd->flags &= ~SDF_FLUSHING; 658 } else 659 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 660 } 661 662 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 663 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 664 665 scsipi_wait_drain(periph); 666 667 if (periph->periph_flags & PERIPH_REMOVABLE) 668 scsipi_prevent(periph, PR_ALLOW, 669 XS_CTL_IGNORE_ILLEGAL_REQUEST | 670 XS_CTL_IGNORE_NOT_READY); 671 periph->periph_flags &= ~PERIPH_OPEN; 672 673 scsipi_wait_drain(periph); 674 675 scsipi_adapter_delref(adapt); 676 } 677 678 sdunlock(sd); 679 return (0); 680 } 681 682 /* 683 * Actually translate the requested transfer into one the physical driver 684 * can understand. The transfer is described by a buf and will include 685 * only one physical transfer. 686 */ 687 void 688 sdstrategy(bp) 689 struct buf *bp; 690 { 691 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 692 struct scsipi_periph *periph = sd->sc_periph; 693 struct disklabel *lp; 694 daddr_t blkno; 695 int s; 696 boolean_t sector_aligned; 697 698 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 699 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 700 ("%ld bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 701 /* 702 * If the device has been made invalid, error out 703 */ 704 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 705 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 706 if (periph->periph_flags & PERIPH_OPEN) 707 bp->b_error = EIO; 708 else 709 bp->b_error = ENODEV; 710 goto bad; 711 } 712 713 lp = sd->sc_dk.dk_label; 714 715 /* 716 * The transfer must be a whole number of blocks, offset must not be 717 * negative. 718 */ 719 if (lp->d_secsize == DEV_BSIZE) { 720 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 721 } else { 722 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 723 } 724 if (!sector_aligned || bp->b_blkno < 0) { 725 bp->b_error = EINVAL; 726 goto bad; 727 } 728 /* 729 * If it's a null transfer, return immediatly 730 */ 731 if (bp->b_bcount == 0) 732 goto done; 733 734 /* 735 * Do bounds checking, adjust transfer. if error, process. 736 * If end of partition, just return. 737 */ 738 if (SDPART(bp->b_dev) == RAW_PART) { 739 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 740 sd->params.disksize512) <= 0) 741 goto done; 742 } else { 743 if (bounds_check_with_label(&sd->sc_dk, bp, 744 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 745 goto done; 746 } 747 748 /* 749 * Now convert the block number to absolute and put it in 750 * terms of the device's logical block size. 751 */ 752 if (lp->d_secsize == DEV_BSIZE) 753 blkno = bp->b_blkno; 754 else if (lp->d_secsize > DEV_BSIZE) 755 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 756 else 757 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 758 759 if (SDPART(bp->b_dev) != RAW_PART) 760 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 761 762 bp->b_rawblkno = blkno; 763 764 s = splbio(); 765 766 /* 767 * Place it in the queue of disk activities for this disk. 768 * 769 * XXX Only do disksort() if the current operating mode does not 770 * XXX include tagged queueing. 771 */ 772 BUFQ_PUT(&sd->buf_queue, bp); 773 774 /* 775 * Tell the device to get going on the transfer if it's 776 * not doing anything, otherwise just wait for completion 777 */ 778 sdstart(sd->sc_periph); 779 780 splx(s); 781 return; 782 783 bad: 784 bp->b_flags |= B_ERROR; 785 done: 786 /* 787 * Correctly set the buf to indicate a completed xfer 788 */ 789 bp->b_resid = bp->b_bcount; 790 biodone(bp); 791 } 792 793 /* 794 * sdstart looks to see if there is a buf waiting for the device 795 * and that the device is not already busy. If both are true, 796 * It dequeues the buf and creates a scsi command to perform the 797 * transfer in the buf. The transfer request will call scsipi_done 798 * on completion, which will in turn call this routine again 799 * so that the next queued transfer is performed. 800 * The bufs are queued by the strategy routine (sdstrategy) 801 * 802 * This routine is also called after other non-queued requests 803 * have been made of the scsi driver, to ensure that the queue 804 * continues to be drained. 805 * 806 * must be called at the correct (highish) spl level 807 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 808 */ 809 void 810 sdstart(periph) 811 struct scsipi_periph *periph; 812 { 813 struct sd_softc *sd = (void *)periph->periph_dev; 814 struct disklabel *lp = sd->sc_dk.dk_label; 815 struct buf *bp = 0; 816 struct scsipi_rw_big cmd_big; 817 struct scsi_rw cmd_small; 818 struct scsipi_generic *cmdp; 819 struct scsipi_xfer *xs; 820 int nblks, cmdlen, error, flags; 821 822 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 823 /* 824 * Check if the device has room for another command 825 */ 826 while (periph->periph_active < periph->periph_openings) { 827 /* 828 * there is excess capacity, but a special waits 829 * It'll need the adapter as soon as we clear out of the 830 * way and let it run (user level wait). 831 */ 832 if (periph->periph_flags & PERIPH_WAITING) { 833 periph->periph_flags &= ~PERIPH_WAITING; 834 wakeup((caddr_t)periph); 835 return; 836 } 837 838 /* 839 * If the device has become invalid, abort all the 840 * reads and writes until all files have been closed and 841 * re-opened 842 */ 843 if (__predict_false( 844 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 845 if ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 846 bp->b_error = EIO; 847 bp->b_flags |= B_ERROR; 848 bp->b_resid = bp->b_bcount; 849 biodone(bp); 850 continue; 851 } else { 852 return; 853 } 854 } 855 856 /* 857 * See if there is a buf with work for us to do.. 858 */ 859 if ((bp = BUFQ_PEEK(&sd->buf_queue)) == NULL) 860 return; 861 862 /* 863 * We have a buf, now we should make a command. 864 */ 865 866 if (lp->d_secsize == DEV_BSIZE) 867 nblks = bp->b_bcount >> DEV_BSHIFT; 868 else 869 nblks = howmany(bp->b_bcount, lp->d_secsize); 870 871 /* 872 * Fill out the scsi command. If the transfer will 873 * fit in a "small" cdb, use it. 874 */ 875 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 876 ((nblks & 0xff) == nblks) && 877 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 878 /* 879 * We can fit in a small cdb. 880 */ 881 memset(&cmd_small, 0, sizeof(cmd_small)); 882 cmd_small.opcode = (bp->b_flags & B_READ) ? 883 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 884 _lto3b(bp->b_rawblkno, cmd_small.addr); 885 cmd_small.length = nblks & 0xff; 886 cmdlen = sizeof(cmd_small); 887 cmdp = (struct scsipi_generic *)&cmd_small; 888 } else { 889 /* 890 * Need a large cdb. 891 */ 892 memset(&cmd_big, 0, sizeof(cmd_big)); 893 cmd_big.opcode = (bp->b_flags & B_READ) ? 894 READ_BIG : WRITE_BIG; 895 _lto4b(bp->b_rawblkno, cmd_big.addr); 896 _lto2b(nblks, cmd_big.length); 897 cmdlen = sizeof(cmd_big); 898 cmdp = (struct scsipi_generic *)&cmd_big; 899 } 900 901 /* Instrumentation. */ 902 disk_busy(&sd->sc_dk); 903 904 /* 905 * Mark the disk dirty so that the cache will be 906 * flushed on close. 907 */ 908 if ((bp->b_flags & B_READ) == 0) 909 sd->flags |= SDF_DIRTY; 910 911 /* 912 * Figure out what flags to use. 913 */ 914 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 915 if (bp->b_flags & B_READ) 916 flags |= XS_CTL_DATA_IN; 917 else 918 flags |= XS_CTL_DATA_OUT; 919 920 /* 921 * Call the routine that chats with the adapter. 922 * Note: we cannot sleep as we may be an interrupt 923 */ 924 xs = scsipi_make_xs(periph, cmdp, cmdlen, 925 (u_char *)bp->b_data, bp->b_bcount, 926 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 927 if (__predict_false(xs == NULL)) { 928 /* 929 * out of memory. Keep this buffer in the queue, and 930 * retry later. 931 */ 932 printf("sdstart(): try again\n"); 933 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 934 periph); 935 return; 936 } 937 /* 938 * need to dequeue the buffer before queuing the command, 939 * because cdstart may be called recursively from the 940 * HBA driver 941 */ 942 #ifdef DIAGNOSTIC 943 if (BUFQ_GET(&sd->buf_queue) != bp) 944 panic("sdstart(): dequeued wrong buf"); 945 #else 946 BUFQ_GET(&sd->buf_queue); 947 #endif 948 error = scsipi_command(periph, xs, cmdp, cmdlen, 949 (u_char *)bp->b_data, bp->b_bcount, 950 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 951 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 952 KASSERT(error == 0); 953 } 954 } 955 956 void 957 sdrestart(void *v) 958 { 959 int s = splbio(); 960 sdstart((struct scsipi_periph *)v); 961 splx(s); 962 } 963 964 void 965 sddone(xs) 966 struct scsipi_xfer *xs; 967 { 968 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 969 970 if (sd->flags & SDF_FLUSHING) { 971 /* Flush completed, no longer dirty. */ 972 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 973 } 974 975 if (xs->bp != NULL) { 976 disk_unbusy(&sd->sc_dk, xs->bp->b_bcount - xs->bp->b_resid, 977 (xs->bp->b_flags & B_READ)); 978 #if NRND > 0 979 rnd_add_uint32(&sd->rnd_source, xs->bp->b_rawblkno); 980 #endif 981 } 982 } 983 984 void 985 sdminphys(bp) 986 struct buf *bp; 987 { 988 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 989 long max; 990 991 /* 992 * If the device is ancient, we want to make sure that 993 * the transfer fits into a 6-byte cdb. 994 * 995 * XXX Note that the SCSI-I spec says that 256-block transfers 996 * are allowed in a 6-byte read/write, and are specified 997 * by settng the "length" to 0. However, we're conservative 998 * here, allowing only 255-block transfers in case an 999 * ancient device gets confused by length == 0. A length of 0 1000 * in a 10-byte read/write actually means 0 blocks. 1001 */ 1002 if ((sd->flags & SDF_ANCIENT) && 1003 ((sd->sc_periph->periph_flags & 1004 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 1005 max = sd->sc_dk.dk_label->d_secsize * 0xff; 1006 1007 if (bp->b_bcount > max) 1008 bp->b_bcount = max; 1009 } 1010 1011 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 1012 } 1013 1014 int 1015 sdread(dev, uio, ioflag) 1016 dev_t dev; 1017 struct uio *uio; 1018 int ioflag; 1019 { 1020 1021 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 1022 } 1023 1024 int 1025 sdwrite(dev, uio, ioflag) 1026 dev_t dev; 1027 struct uio *uio; 1028 int ioflag; 1029 { 1030 1031 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1032 } 1033 1034 /* 1035 * Perform special action on behalf of the user 1036 * Knows about the internals of this device 1037 */ 1038 int 1039 sdioctl(dev, cmd, addr, flag, p) 1040 dev_t dev; 1041 u_long cmd; 1042 caddr_t addr; 1043 int flag; 1044 struct proc *p; 1045 { 1046 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1047 struct scsipi_periph *periph = sd->sc_periph; 1048 int part = SDPART(dev); 1049 int error = 0; 1050 #ifdef __HAVE_OLD_DISKLABEL 1051 struct disklabel *newlabel = NULL; 1052 #endif 1053 1054 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1055 1056 /* 1057 * If the device is not valid, some IOCTLs can still be 1058 * handled on the raw partition. Check this here. 1059 */ 1060 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1061 switch (cmd) { 1062 case DIOCKLABEL: 1063 case DIOCWLABEL: 1064 case DIOCLOCK: 1065 case DIOCEJECT: 1066 case ODIOCEJECT: 1067 case DIOCGCACHE: 1068 case DIOCSCACHE: 1069 case SCIOCIDENTIFY: 1070 case OSCIOCIDENTIFY: 1071 case SCIOCCOMMAND: 1072 case SCIOCDEBUG: 1073 if (part == RAW_PART) 1074 break; 1075 /* FALLTHROUGH */ 1076 default: 1077 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1078 return (ENODEV); 1079 else 1080 return (EIO); 1081 } 1082 } 1083 1084 switch (cmd) { 1085 case DIOCGDINFO: 1086 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1087 return (0); 1088 1089 #ifdef __HAVE_OLD_DISKLABEL 1090 case ODIOCGDINFO: 1091 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1092 if (newlabel == NULL) 1093 return EIO; 1094 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1095 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1096 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1097 else 1098 error = ENOTTY; 1099 free(newlabel, M_TEMP); 1100 return error; 1101 #endif 1102 1103 case DIOCGPART: 1104 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1105 ((struct partinfo *)addr)->part = 1106 &sd->sc_dk.dk_label->d_partitions[part]; 1107 return (0); 1108 1109 case DIOCWDINFO: 1110 case DIOCSDINFO: 1111 #ifdef __HAVE_OLD_DISKLABEL 1112 case ODIOCWDINFO: 1113 case ODIOCSDINFO: 1114 #endif 1115 { 1116 struct disklabel *lp; 1117 1118 if ((flag & FWRITE) == 0) 1119 return (EBADF); 1120 1121 #ifdef __HAVE_OLD_DISKLABEL 1122 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1123 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1124 if (newlabel == NULL) 1125 return EIO; 1126 memset(newlabel, 0, sizeof newlabel); 1127 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1128 lp = newlabel; 1129 } else 1130 #endif 1131 lp = (struct disklabel *)addr; 1132 1133 if ((error = sdlock(sd)) != 0) 1134 goto bad; 1135 sd->flags |= SDF_LABELLING; 1136 1137 error = setdisklabel(sd->sc_dk.dk_label, 1138 lp, /*sd->sc_dk.dk_openmask : */0, 1139 sd->sc_dk.dk_cpulabel); 1140 if (error == 0) { 1141 if (cmd == DIOCWDINFO 1142 #ifdef __HAVE_OLD_DISKLABEL 1143 || cmd == ODIOCWDINFO 1144 #endif 1145 ) 1146 error = writedisklabel(SDLABELDEV(dev), 1147 sdstrategy, sd->sc_dk.dk_label, 1148 sd->sc_dk.dk_cpulabel); 1149 } 1150 1151 sd->flags &= ~SDF_LABELLING; 1152 sdunlock(sd); 1153 bad: 1154 #ifdef __HAVE_OLD_DISKLABEL 1155 if (newlabel != NULL) 1156 free(newlabel, M_TEMP); 1157 #endif 1158 return (error); 1159 } 1160 1161 case DIOCKLABEL: 1162 if (*(int *)addr) 1163 periph->periph_flags |= PERIPH_KEEP_LABEL; 1164 else 1165 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1166 return (0); 1167 1168 case DIOCWLABEL: 1169 if ((flag & FWRITE) == 0) 1170 return (EBADF); 1171 if (*(int *)addr) 1172 sd->flags |= SDF_WLABEL; 1173 else 1174 sd->flags &= ~SDF_WLABEL; 1175 return (0); 1176 1177 case DIOCLOCK: 1178 return (scsipi_prevent(periph, 1179 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1180 1181 case DIOCEJECT: 1182 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1183 return (ENOTTY); 1184 if (*(int *)addr == 0) { 1185 /* 1186 * Don't force eject: check that we are the only 1187 * partition open. If so, unlock it. 1188 */ 1189 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1190 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1191 sd->sc_dk.dk_openmask) { 1192 error = scsipi_prevent(periph, PR_ALLOW, 1193 XS_CTL_IGNORE_NOT_READY); 1194 if (error) 1195 return (error); 1196 } else { 1197 return (EBUSY); 1198 } 1199 } 1200 /* FALLTHROUGH */ 1201 case ODIOCEJECT: 1202 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1203 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1204 1205 case DIOCGDEFLABEL: 1206 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1207 return (0); 1208 1209 #ifdef __HAVE_OLD_DISKLABEL 1210 case ODIOCGDEFLABEL: 1211 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1212 if (newlabel == NULL) 1213 return EIO; 1214 sdgetdefaultlabel(sd, newlabel); 1215 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1216 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1217 else 1218 error = ENOTTY; 1219 free(newlabel, M_TEMP); 1220 return error; 1221 #endif 1222 1223 case DIOCGCACHE: 1224 return (sd_getcache(sd, (int *) addr)); 1225 1226 case DIOCSCACHE: 1227 if ((flag & FWRITE) == 0) 1228 return (EBADF); 1229 return (sd_setcache(sd, *(int *) addr)); 1230 1231 case DIOCCACHESYNC: 1232 /* 1233 * XXX Do we really need to care about having a writable 1234 * file descriptor here? 1235 */ 1236 if ((flag & FWRITE) == 0) 1237 return (EBADF); 1238 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1239 error = sd_flush(sd, 0); 1240 if (error) 1241 sd->flags &= ~SDF_FLUSHING; 1242 else 1243 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1244 } else 1245 error = 0; 1246 return (error); 1247 1248 default: 1249 if (part != RAW_PART) 1250 return (ENOTTY); 1251 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1252 } 1253 1254 #ifdef DIAGNOSTIC 1255 panic("sdioctl: impossible"); 1256 #endif 1257 } 1258 1259 void 1260 sdgetdefaultlabel(sd, lp) 1261 struct sd_softc *sd; 1262 struct disklabel *lp; 1263 { 1264 1265 memset(lp, 0, sizeof(struct disklabel)); 1266 1267 lp->d_secsize = sd->params.blksize; 1268 lp->d_ntracks = sd->params.heads; 1269 lp->d_nsectors = sd->params.sectors; 1270 lp->d_ncylinders = sd->params.cyls; 1271 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1272 1273 switch (scsipi_periph_bustype(sd->sc_periph)) { 1274 case SCSIPI_BUSTYPE_SCSI: 1275 lp->d_type = DTYPE_SCSI; 1276 break; 1277 case SCSIPI_BUSTYPE_ATAPI: 1278 lp->d_type = DTYPE_ATAPI; 1279 break; 1280 } 1281 /* 1282 * XXX 1283 * We could probe the mode pages to figure out what kind of disc it is. 1284 * Is this worthwhile? 1285 */ 1286 strncpy(lp->d_typename, "mydisk", 16); 1287 strncpy(lp->d_packname, "fictitious", 16); 1288 lp->d_secperunit = sd->params.disksize; 1289 lp->d_rpm = sd->params.rot_rate; 1290 lp->d_interleave = 1; 1291 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1292 D_REMOVABLE : 0; 1293 1294 lp->d_partitions[RAW_PART].p_offset = 0; 1295 lp->d_partitions[RAW_PART].p_size = 1296 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1297 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1298 lp->d_npartitions = RAW_PART + 1; 1299 1300 lp->d_magic = DISKMAGIC; 1301 lp->d_magic2 = DISKMAGIC; 1302 lp->d_checksum = dkcksum(lp); 1303 } 1304 1305 1306 /* 1307 * Load the label information on the named device 1308 */ 1309 void 1310 sdgetdisklabel(sd) 1311 struct sd_softc *sd; 1312 { 1313 struct disklabel *lp = sd->sc_dk.dk_label; 1314 const char *errstring; 1315 1316 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1317 1318 sdgetdefaultlabel(sd, lp); 1319 1320 if (lp->d_secpercyl == 0) { 1321 lp->d_secpercyl = 100; 1322 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1323 } 1324 1325 /* 1326 * Call the generic disklabel extraction routine 1327 */ 1328 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1329 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1330 if (errstring) { 1331 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1332 return; 1333 } 1334 } 1335 1336 void 1337 sd_shutdown(arg) 1338 void *arg; 1339 { 1340 struct sd_softc *sd = arg; 1341 1342 /* 1343 * If the disk cache needs to be flushed, and the disk supports 1344 * it, flush it. We're cold at this point, so we poll for 1345 * completion. 1346 */ 1347 if ((sd->flags & SDF_DIRTY) != 0) { 1348 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1349 printf("%s: cache synchronization failed\n", 1350 sd->sc_dev.dv_xname); 1351 sd->flags &= ~SDF_FLUSHING; 1352 } else 1353 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1354 } 1355 } 1356 1357 /* 1358 * Check Errors 1359 */ 1360 int 1361 sd_interpret_sense(xs) 1362 struct scsipi_xfer *xs; 1363 { 1364 struct scsipi_periph *periph = xs->xs_periph; 1365 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1366 struct sd_softc *sd = (void *)periph->periph_dev; 1367 int s, error, retval = EJUSTRETURN; 1368 1369 /* 1370 * If the periph is already recovering, just do the normal 1371 * error processing. 1372 */ 1373 if (periph->periph_flags & PERIPH_RECOVERING) 1374 return (retval); 1375 1376 /* 1377 * If the device is not open yet, let the generic code handle it. 1378 */ 1379 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1380 return (retval); 1381 1382 /* 1383 * If it isn't a extended or extended/deferred error, let 1384 * the generic code handle it. 1385 */ 1386 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1387 (sense->error_code & SSD_ERRCODE) != 0x71) 1388 return (retval); 1389 1390 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1391 sense->add_sense_code == 0x4) { 1392 if (sense->add_sense_code_qual == 0x01) { 1393 /* 1394 * Unit In The Process Of Becoming Ready. 1395 */ 1396 printf("%s: waiting for pack to spin up...\n", 1397 sd->sc_dev.dv_xname); 1398 if (!callout_pending(&periph->periph_callout)) 1399 scsipi_periph_freeze(periph, 1); 1400 callout_reset(&periph->periph_callout, 1401 5 * hz, scsipi_periph_timed_thaw, periph); 1402 retval = ERESTART; 1403 } else if (sense->add_sense_code_qual == 0x02) { 1404 printf("%s: pack is stopped, restarting...\n", 1405 sd->sc_dev.dv_xname); 1406 s = splbio(); 1407 periph->periph_flags |= PERIPH_RECOVERING; 1408 splx(s); 1409 error = scsipi_start(periph, SSS_START, 1410 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1411 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1412 if (error) { 1413 printf("%s: unable to restart pack\n", 1414 sd->sc_dev.dv_xname); 1415 retval = error; 1416 } else 1417 retval = ERESTART; 1418 s = splbio(); 1419 periph->periph_flags &= ~PERIPH_RECOVERING; 1420 splx(s); 1421 } 1422 } 1423 if ((sense->flags & SSD_KEY) == SKEY_MEDIUM_ERROR && 1424 sense->add_sense_code == 0x31 && 1425 sense->add_sense_code_qual == 0x00) { /* maybe for any asq ? */ 1426 /* Medium Format Corrupted */ 1427 retval = EFTYPE; 1428 } 1429 return (retval); 1430 } 1431 1432 1433 int 1434 sdsize(dev) 1435 dev_t dev; 1436 { 1437 struct sd_softc *sd; 1438 int part, unit, omask; 1439 int size; 1440 1441 unit = SDUNIT(dev); 1442 if (unit >= sd_cd.cd_ndevs) 1443 return (-1); 1444 sd = sd_cd.cd_devs[unit]; 1445 if (sd == NULL) 1446 return (-1); 1447 1448 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1449 return (-1); 1450 1451 part = SDPART(dev); 1452 omask = sd->sc_dk.dk_openmask & (1 << part); 1453 1454 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1455 return (-1); 1456 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1457 size = -1; 1458 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1459 size = -1; 1460 else 1461 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1462 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1463 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1464 return (-1); 1465 return (size); 1466 } 1467 1468 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1469 static struct scsipi_xfer sx; 1470 static int sddoingadump; 1471 1472 /* 1473 * dump all of physical memory into the partition specified, starting 1474 * at offset 'dumplo' into the partition. 1475 */ 1476 int 1477 sddump(dev, blkno, va, size) 1478 dev_t dev; 1479 daddr_t blkno; 1480 caddr_t va; 1481 size_t size; 1482 { 1483 struct sd_softc *sd; /* disk unit to do the I/O */ 1484 struct disklabel *lp; /* disk's disklabel */ 1485 int unit, part; 1486 int sectorsize; /* size of a disk sector */ 1487 int nsects; /* number of sectors in partition */ 1488 int sectoff; /* sector offset of partition */ 1489 int totwrt; /* total number of sectors left to write */ 1490 int nwrt; /* current number of sectors to write */ 1491 struct scsipi_rw_big cmd; /* write command */ 1492 struct scsipi_xfer *xs; /* ... convenience */ 1493 struct scsipi_periph *periph; 1494 struct scsipi_channel *chan; 1495 1496 /* Check if recursive dump; if so, punt. */ 1497 if (sddoingadump) 1498 return (EFAULT); 1499 1500 /* Mark as active early. */ 1501 sddoingadump = 1; 1502 1503 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1504 part = SDPART(dev); 1505 1506 /* Check for acceptable drive number. */ 1507 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1508 return (ENXIO); 1509 1510 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1511 return (ENODEV); 1512 1513 periph = sd->sc_periph; 1514 chan = periph->periph_channel; 1515 1516 /* Make sure it was initialized. */ 1517 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1518 return (ENXIO); 1519 1520 /* Convert to disk sectors. Request must be a multiple of size. */ 1521 lp = sd->sc_dk.dk_label; 1522 sectorsize = lp->d_secsize; 1523 if ((size % sectorsize) != 0) 1524 return (EFAULT); 1525 totwrt = size / sectorsize; 1526 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1527 1528 nsects = lp->d_partitions[part].p_size; 1529 sectoff = lp->d_partitions[part].p_offset; 1530 1531 /* Check transfer bounds against partition size. */ 1532 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1533 return (EINVAL); 1534 1535 /* Offset block number to start of partition. */ 1536 blkno += sectoff; 1537 1538 xs = &sx; 1539 1540 while (totwrt > 0) { 1541 nwrt = totwrt; /* XXX */ 1542 #ifndef SD_DUMP_NOT_TRUSTED 1543 /* 1544 * Fill out the scsi command 1545 */ 1546 memset(&cmd, 0, sizeof(cmd)); 1547 cmd.opcode = WRITE_BIG; 1548 _lto4b(blkno, cmd.addr); 1549 _lto2b(nwrt, cmd.length); 1550 /* 1551 * Fill out the scsipi_xfer structure 1552 * Note: we cannot sleep as we may be an interrupt 1553 * don't use scsipi_command() as it may want to wait 1554 * for an xs. 1555 */ 1556 memset(xs, 0, sizeof(sx)); 1557 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1558 XS_CTL_DATA_OUT; 1559 xs->xs_status = 0; 1560 xs->xs_periph = periph; 1561 xs->xs_retries = SDRETRIES; 1562 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1563 xs->cmd = (struct scsipi_generic *)&cmd; 1564 xs->cmdlen = sizeof(cmd); 1565 xs->resid = nwrt * sectorsize; 1566 xs->error = XS_NOERROR; 1567 xs->bp = 0; 1568 xs->data = va; 1569 xs->datalen = nwrt * sectorsize; 1570 1571 /* 1572 * Pass all this info to the scsi driver. 1573 */ 1574 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1575 if ((xs->xs_status & XS_STS_DONE) == 0 || 1576 xs->error != XS_NOERROR) 1577 return (EIO); 1578 #else /* SD_DUMP_NOT_TRUSTED */ 1579 /* Let's just talk about this first... */ 1580 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1581 delay(500 * 1000); /* half a second */ 1582 #endif /* SD_DUMP_NOT_TRUSTED */ 1583 1584 /* update block count */ 1585 totwrt -= nwrt; 1586 blkno += nwrt; 1587 va += sectorsize * nwrt; 1588 } 1589 sddoingadump = 0; 1590 return (0); 1591 } 1592 1593 int 1594 sd_mode_sense(sd, byte2, sense, size, page, flags, big) 1595 struct sd_softc *sd; 1596 u_int8_t byte2; 1597 void *sense; 1598 size_t size; 1599 int page, flags; 1600 int *big; 1601 { 1602 1603 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1604 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1605 *big = 1; 1606 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1607 size + sizeof(struct scsipi_mode_header_big), 1608 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1609 } else { 1610 *big = 0; 1611 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1612 size + sizeof(struct scsipi_mode_header), 1613 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1614 } 1615 } 1616 1617 int 1618 sd_mode_select(sd, byte2, sense, size, flags, big) 1619 struct sd_softc *sd; 1620 u_int8_t byte2; 1621 void *sense; 1622 size_t size; 1623 int flags, big; 1624 { 1625 1626 if (big) { 1627 struct scsipi_mode_header_big *header = sense; 1628 1629 _lto2b(0, header->data_length); 1630 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1631 size + sizeof(struct scsipi_mode_header_big), 1632 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1633 } else { 1634 struct scsipi_mode_header *header = sense; 1635 1636 header->data_length = 0; 1637 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1638 size + sizeof(struct scsipi_mode_header), 1639 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1640 } 1641 } 1642 1643 int 1644 sd_get_simplifiedparms(sd, dp, flags) 1645 struct sd_softc *sd; 1646 struct disk_parms *dp; 1647 int flags; 1648 { 1649 struct { 1650 struct scsipi_mode_header header; 1651 /* no block descriptor */ 1652 u_int8_t pg_code; /* page code (should be 6) */ 1653 u_int8_t pg_length; /* page length (should be 11) */ 1654 u_int8_t wcd; /* bit0: cache disable */ 1655 u_int8_t lbs[2]; /* logical block size */ 1656 u_int8_t size[5]; /* number of log. blocks */ 1657 u_int8_t pp; /* power/performance */ 1658 u_int8_t flags; 1659 u_int8_t resvd; 1660 } scsipi_sense; 1661 u_int64_t sectors; 1662 int error; 1663 1664 /* 1665 * scsipi_size (ie "read capacity") and mode sense page 6 1666 * give the same information. Do both for now, and check 1667 * for consistency. 1668 * XXX probably differs for removable media 1669 */ 1670 dp->blksize = 512; 1671 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1672 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1673 1674 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1675 &scsipi_sense.header, sizeof(scsipi_sense), 1676 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1677 1678 if (error != 0) 1679 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1680 1681 dp->blksize = _2btol(scsipi_sense.lbs); 1682 if (dp->blksize == 0) 1683 dp->blksize = 512; 1684 1685 /* 1686 * Create a pseudo-geometry. 1687 */ 1688 dp->heads = 64; 1689 dp->sectors = 32; 1690 dp->cyls = sectors / (dp->heads * dp->sectors); 1691 dp->disksize = _5btol(scsipi_sense.size); 1692 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1693 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1694 (unsigned long long)dp->disksize, 1695 (unsigned long long)sectors); 1696 dp->disksize = sectors; 1697 } 1698 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1699 1700 return (SDGP_RESULT_OK); 1701 } 1702 1703 /* 1704 * Get the scsi driver to send a full inquiry to the * device and use the 1705 * results to fill out the disk parameter structure. 1706 */ 1707 int 1708 sd_get_capacity(sd, dp, flags) 1709 struct sd_softc *sd; 1710 struct disk_parms *dp; 1711 int flags; 1712 { 1713 u_int64_t sectors; 1714 int error; 1715 #if 0 1716 int i; 1717 u_int8_t *p; 1718 #endif 1719 1720 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1721 if (sectors == 0) { 1722 struct scsipi_read_format_capacities cmd; 1723 struct { 1724 struct scsipi_capacity_list_header header; 1725 struct scsipi_capacity_descriptor desc; 1726 } __attribute__((packed)) data; 1727 1728 memset(&cmd, 0, sizeof(cmd)); 1729 memset(&data, 0, sizeof(data)); 1730 cmd.opcode = READ_FORMAT_CAPACITIES; 1731 _lto2b(sizeof(data), cmd.length); 1732 1733 error = scsipi_command(sd->sc_periph, NULL, 1734 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1735 SDRETRIES, 20000, NULL, 1736 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1737 if (error == EFTYPE) { 1738 /* Medium Format Corrupted, handle as not formatted */ 1739 return (SDGP_RESULT_UNFORMATTED); 1740 } 1741 if (error || data.header.length == 0) 1742 return (SDGP_RESULT_OFFLINE); 1743 1744 #if 0 1745 printf("rfc: length=%d\n", data.header.length); 1746 printf("rfc result:"); for (i = sizeof(struct scsipi_capacity_list_header) + data.header.length, p = (void *)&data; i; i--, p++) printf(" %02x", *p); printf("\n"); 1747 #endif 1748 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1749 case SCSIPI_CAP_DESC_CODE_RESERVED: 1750 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1751 break; 1752 1753 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1754 return (SDGP_RESULT_UNFORMATTED); 1755 1756 case SCSIPI_CAP_DESC_CODE_NONE: 1757 return (SDGP_RESULT_OFFLINE); 1758 } 1759 1760 dp->disksize = sectors = _4btol(data.desc.nblks); 1761 if (sectors == 0) 1762 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1763 1764 dp->blksize = _3btol(data.desc.blklen); 1765 if (dp->blksize == 0) 1766 dp->blksize = 512; 1767 } else { 1768 struct sd_mode_sense_data scsipi_sense; 1769 int big, bsize; 1770 struct scsi_blk_desc *bdesc; 1771 1772 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1773 error = sd_mode_sense(sd, 0, &scsipi_sense, 1774 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1775 dp->blksize = 512; 1776 if (!error) { 1777 if (big) { 1778 bdesc = (void *)(&scsipi_sense.header.big + 1); 1779 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1780 } else { 1781 bdesc = (void *)(&scsipi_sense.header.small + 1); 1782 bsize = scsipi_sense.header.small.blk_desc_len; 1783 } 1784 1785 #if 0 1786 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1787 printf("page 0 bsize=%d\n", bsize); 1788 printf("page 0 ok\n"); 1789 #endif 1790 1791 if (bsize >= 8) { 1792 dp->blksize = _3btol(bdesc->blklen); 1793 if (dp->blksize == 0) 1794 dp->blksize = 512; 1795 } 1796 } 1797 } 1798 1799 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1800 return (0); 1801 } 1802 1803 int 1804 sd_get_parms_page4(sd, dp, flags) 1805 struct sd_softc *sd; 1806 struct disk_parms *dp; 1807 int flags; 1808 { 1809 struct sd_mode_sense_data scsipi_sense; 1810 int error; 1811 int big, poffset, byte2; 1812 union scsi_disk_pages *pages; 1813 #if 0 1814 int i; 1815 u_int8_t *p; 1816 #endif 1817 1818 byte2 = SMS_DBD; 1819 again: 1820 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1821 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1822 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1823 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1824 flags | XS_CTL_SILENT, &big); 1825 if (error) { 1826 if (byte2 == SMS_DBD) { 1827 /* No result; try once more with DBD off */ 1828 byte2 = 0; 1829 goto again; 1830 } 1831 return (error); 1832 } 1833 1834 if (big) { 1835 poffset = sizeof scsipi_sense.header.big; 1836 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1837 } else { 1838 poffset = sizeof scsipi_sense.header.small; 1839 poffset += scsipi_sense.header.small.blk_desc_len; 1840 } 1841 1842 pages = (void *)((u_long)&scsipi_sense + poffset); 1843 #if 0 1844 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1845 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1846 #endif 1847 1848 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1849 return (ERESTART); 1850 1851 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1852 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1853 _3btol(pages->rigid_geometry.ncyl), 1854 pages->rigid_geometry.nheads, 1855 _2btol(pages->rigid_geometry.st_cyl_wp), 1856 _2btol(pages->rigid_geometry.st_cyl_rwc), 1857 _2btol(pages->rigid_geometry.land_zone))); 1858 1859 /* 1860 * KLUDGE!! (for zone recorded disks) 1861 * give a number of sectors so that sec * trks * cyls 1862 * is <= disk_size 1863 * can lead to wasted space! THINK ABOUT THIS ! 1864 */ 1865 dp->heads = pages->rigid_geometry.nheads; 1866 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1867 if (dp->heads == 0 || dp->cyls == 0) 1868 return (ERESTART); 1869 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1870 1871 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1872 if (dp->rot_rate == 0) 1873 dp->rot_rate = 3600; 1874 1875 #if 0 1876 printf("page 4 ok\n"); 1877 #endif 1878 return (0); 1879 } 1880 1881 int 1882 sd_get_parms_page5(sd, dp, flags) 1883 struct sd_softc *sd; 1884 struct disk_parms *dp; 1885 int flags; 1886 { 1887 struct sd_mode_sense_data scsipi_sense; 1888 int error; 1889 int big, poffset, byte2; 1890 union scsi_disk_pages *pages; 1891 #if 0 1892 int i; 1893 u_int8_t *p; 1894 #endif 1895 1896 byte2 = SMS_DBD; 1897 again: 1898 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1899 error = sd_mode_sense(sd, 0, &scsipi_sense, 1900 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1901 sizeof(scsipi_sense.pages.flex_geometry), 5, 1902 flags | XS_CTL_SILENT, &big); 1903 if (error) { 1904 if (byte2 == SMS_DBD) { 1905 /* No result; try once more with DBD off */ 1906 byte2 = 0; 1907 goto again; 1908 } 1909 return (error); 1910 } 1911 1912 if (big) { 1913 poffset = sizeof scsipi_sense.header.big; 1914 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1915 } else { 1916 poffset = sizeof scsipi_sense.header.small; 1917 poffset += scsipi_sense.header.small.blk_desc_len; 1918 } 1919 1920 pages = (void *)((u_long)&scsipi_sense + poffset); 1921 #if 0 1922 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1923 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1924 #endif 1925 1926 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1927 return (ERESTART); 1928 1929 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1930 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1931 _3btol(pages->flex_geometry.ncyl), 1932 pages->flex_geometry.nheads, 1933 pages->flex_geometry.ph_sec_tr, 1934 _2btol(pages->flex_geometry.bytes_s))); 1935 1936 dp->heads = pages->flex_geometry.nheads; 1937 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1938 dp->sectors = pages->flex_geometry.ph_sec_tr; 1939 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1940 return (ERESTART); 1941 1942 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1943 if (dp->rot_rate == 0) 1944 dp->rot_rate = 3600; 1945 1946 #if 0 1947 printf("page 5 ok\n"); 1948 #endif 1949 return (0); 1950 } 1951 1952 int 1953 sd_get_parms(sd, dp, flags) 1954 struct sd_softc *sd; 1955 struct disk_parms *dp; 1956 int flags; 1957 { 1958 int error; 1959 1960 /* 1961 * If offline, the SDEV_MEDIA_LOADED flag will be 1962 * cleared by the caller if necessary. 1963 */ 1964 if (sd->type == T_SIMPLE_DIRECT) 1965 return (sd_get_simplifiedparms(sd, dp, flags)); 1966 1967 error = sd_get_capacity(sd, dp, flags); 1968 if (error) 1969 return (error); 1970 1971 if (sd->type == T_OPTICAL) 1972 goto page0; 1973 1974 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1975 if (!sd_get_parms_page5(sd, dp, flags) || 1976 !sd_get_parms_page4(sd, dp, flags)) 1977 return (SDGP_RESULT_OK); 1978 } else { 1979 if (!sd_get_parms_page4(sd, dp, flags) || 1980 !sd_get_parms_page5(sd, dp, flags)) 1981 return (SDGP_RESULT_OK); 1982 } 1983 1984 page0: 1985 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1986 /* Try calling driver's method for figuring out geometry. */ 1987 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1988 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1989 (sd->sc_periph, dp, dp->disksize)) { 1990 /* 1991 * Use adaptec standard fictitious geometry 1992 * this depends on which controller (e.g. 1542C is 1993 * different. but we have to put SOMETHING here..) 1994 */ 1995 dp->heads = 64; 1996 dp->sectors = 32; 1997 dp->cyls = dp->disksize / (64 * 32); 1998 } 1999 dp->rot_rate = 3600; 2000 return (SDGP_RESULT_OK); 2001 } 2002 2003 int 2004 sd_flush(sd, flags) 2005 struct sd_softc *sd; 2006 int flags; 2007 { 2008 struct scsipi_periph *periph = sd->sc_periph; 2009 struct scsi_synchronize_cache cmd; 2010 2011 /* 2012 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2013 * We issue with address 0 length 0, which should be 2014 * interpreted by the device as "all remaining blocks 2015 * starting at address 0". We ignore ILLEGAL REQUEST 2016 * in the event that the command is not supported by 2017 * the device, and poll for completion so that we know 2018 * that the cache has actually been flushed. 2019 * 2020 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2021 * command, as indicated by our quirks flags. 2022 * 2023 * XXX What about older devices? 2024 */ 2025 if (periph->periph_version < 2 || 2026 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2027 return (0); 2028 2029 sd->flags |= SDF_FLUSHING; 2030 memset(&cmd, 0, sizeof(cmd)); 2031 cmd.opcode = SCSI_SYNCHRONIZE_CACHE; 2032 2033 return (scsipi_command(periph, NULL, (void *)&cmd, sizeof(cmd), 0, 0, 2034 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2035 } 2036 2037 int 2038 sd_getcache(sd, bitsp) 2039 struct sd_softc *sd; 2040 int *bitsp; 2041 { 2042 struct scsipi_periph *periph = sd->sc_periph; 2043 struct sd_mode_sense_data scsipi_sense; 2044 int error, bits = 0; 2045 int big; 2046 union scsi_disk_pages *pages; 2047 2048 if (periph->periph_version < 2) 2049 return (EOPNOTSUPP); 2050 2051 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2052 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2053 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2054 if (error) 2055 return (error); 2056 2057 if (big) 2058 pages = (void *)(&scsipi_sense.header.big + 1); 2059 else 2060 pages = (void *)(&scsipi_sense.header.small + 1); 2061 2062 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2063 bits |= DKCACHE_READ; 2064 if (pages->caching_params.flags & CACHING_WCE) 2065 bits |= DKCACHE_WRITE; 2066 if (pages->caching_params.pg_code & PGCODE_PS) 2067 bits |= DKCACHE_SAVE; 2068 2069 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2070 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2071 sizeof(scsipi_sense.pages.caching_params), 2072 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 2073 if (error == 0) { 2074 if (big) 2075 pages = (void *)(&scsipi_sense.header.big + 1); 2076 else 2077 pages = (void *)(&scsipi_sense.header.small + 1); 2078 2079 if (pages->caching_params.flags & CACHING_RCD) 2080 bits |= DKCACHE_RCHANGE; 2081 if (pages->caching_params.flags & CACHING_WCE) 2082 bits |= DKCACHE_WCHANGE; 2083 } 2084 2085 *bitsp = bits; 2086 2087 return (0); 2088 } 2089 2090 int 2091 sd_setcache(sd, bits) 2092 struct sd_softc *sd; 2093 int bits; 2094 { 2095 struct scsipi_periph *periph = sd->sc_periph; 2096 struct sd_mode_sense_data scsipi_sense; 2097 int error; 2098 uint8_t oflags, byte2 = 0; 2099 int big; 2100 union scsi_disk_pages *pages; 2101 2102 if (periph->periph_version < 2) 2103 return (EOPNOTSUPP); 2104 2105 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2106 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2107 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2108 if (error) 2109 return (error); 2110 2111 if (big) 2112 pages = (void *)(&scsipi_sense.header.big + 1); 2113 else 2114 pages = (void *)(&scsipi_sense.header.small + 1); 2115 2116 oflags = pages->caching_params.flags; 2117 2118 if (bits & DKCACHE_READ) 2119 pages->caching_params.flags &= ~CACHING_RCD; 2120 else 2121 pages->caching_params.flags |= CACHING_RCD; 2122 2123 if (bits & DKCACHE_WRITE) 2124 pages->caching_params.flags |= CACHING_WCE; 2125 else 2126 pages->caching_params.flags &= ~CACHING_WCE; 2127 2128 if (oflags == pages->caching_params.flags) 2129 return (0); 2130 2131 pages->caching_params.pg_code &= PGCODE_MASK; 2132 2133 if (bits & DKCACHE_SAVE) 2134 byte2 |= SMS_SP; 2135 2136 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2137 sizeof(struct scsipi_mode_page_header) + 2138 pages->caching_params.pg_length, 0, big)); 2139 }
Cache object: cc08788b9ff27e4a508e6d2c8b732d23
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