1 /* $NetBSD: sd.c,v 1.214 2003/12/23 13:12:25 pk 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 1.214 2003/12/23 13:12:25 pk Exp $"); 58 59 #include "opt_scsi.h" 60 #include "opt_bufq.h" 61 #include "rnd.h" 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/scsiio.h> 70 #include <sys/buf.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/errno.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/proc.h> 78 #include <sys/conf.h> 79 #include <sys/vnode.h> 80 #if NRND > 0 81 #include <sys/rnd.h> 82 #endif 83 84 #include <dev/scsipi/scsipi_all.h> 85 #include <dev/scsipi/scsi_all.h> 86 #include <dev/scsipi/scsipi_disk.h> 87 #include <dev/scsipi/scsi_disk.h> 88 #include <dev/scsipi/scsiconf.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 sddone __P((struct scsipi_xfer *)); 105 void sd_shutdown __P((void *)); 106 int sd_reassign_blocks __P((struct sd_softc *, u_long)); 107 int sd_interpret_sense __P((struct scsipi_xfer *)); 108 109 int sd_mode_sense __P((struct sd_softc *, u_int8_t, void *, size_t, int, 110 int, int *)); 111 int sd_mode_select __P((struct sd_softc *, u_int8_t, void *, size_t, int, 112 int)); 113 int sd_get_simplifiedparms __P((struct sd_softc *, struct disk_parms *, 114 int)); 115 int sd_get_capacity __P((struct sd_softc *, struct disk_parms *, int)); 116 int sd_get_parms __P((struct sd_softc *, struct disk_parms *, int)); 117 int sd_flush __P((struct sd_softc *, int)); 118 int sd_getcache __P((struct sd_softc *, int *)); 119 int sd_setcache __P((struct sd_softc *, int)); 120 121 int sdmatch __P((struct device *, struct cfdata *, void *)); 122 void sdattach __P((struct device *, struct device *, void *)); 123 int sdactivate __P((struct device *, enum devact)); 124 int sddetach __P((struct device *, int)); 125 126 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 127 sdactivate); 128 129 extern struct cfdriver sd_cd; 130 131 const struct scsipi_inquiry_pattern sd_patterns[] = { 132 {T_DIRECT, T_FIXED, 133 "", "", ""}, 134 {T_DIRECT, T_REMOV, 135 "", "", ""}, 136 {T_OPTICAL, T_FIXED, 137 "", "", ""}, 138 {T_OPTICAL, T_REMOV, 139 "", "", ""}, 140 {T_SIMPLE_DIRECT, T_FIXED, 141 "", "", ""}, 142 {T_SIMPLE_DIRECT, T_REMOV, 143 "", "", ""}, 144 }; 145 146 dev_type_open(sdopen); 147 dev_type_close(sdclose); 148 dev_type_read(sdread); 149 dev_type_write(sdwrite); 150 dev_type_ioctl(sdioctl); 151 dev_type_strategy(sdstrategy); 152 dev_type_dump(sddump); 153 dev_type_size(sdsize); 154 155 const struct bdevsw sd_bdevsw = { 156 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 157 }; 158 159 const struct cdevsw sd_cdevsw = { 160 sdopen, sdclose, sdread, sdwrite, sdioctl, 161 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 162 }; 163 164 struct dkdriver sddkdriver = { sdstrategy }; 165 166 const struct scsipi_periphsw sd_switch = { 167 sd_interpret_sense, /* check our error handler first */ 168 sdstart, /* have a queue, served by this */ 169 NULL, /* have no async handler */ 170 sddone, /* deal with stats at interrupt time */ 171 }; 172 173 struct sd_mode_sense_data { 174 /* 175 * XXX 176 * We are not going to parse this as-is -- it just has to be large 177 * enough. 178 */ 179 union { 180 struct scsipi_mode_header small; 181 struct scsipi_mode_header_big big; 182 } header; 183 struct scsi_blk_desc blk_desc; 184 union scsi_disk_pages pages; 185 }; 186 187 /* 188 * The routine called by the low level scsi routine when it discovers 189 * A device suitable for this driver 190 */ 191 int 192 sdmatch(parent, match, aux) 193 struct device *parent; 194 struct cfdata *match; 195 void *aux; 196 { 197 struct scsipibus_attach_args *sa = aux; 198 int priority; 199 200 (void)scsipi_inqmatch(&sa->sa_inqbuf, 201 (caddr_t)sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 202 sizeof(sd_patterns[0]), &priority); 203 204 return (priority); 205 } 206 207 /* 208 * Attach routine common to atapi & scsi. 209 */ 210 void 211 sdattach(parent, self, aux) 212 struct device *parent, *self; 213 void *aux; 214 { 215 struct sd_softc *sd = (void *)self; 216 struct scsipibus_attach_args *sa = aux; 217 struct scsipi_periph *periph = sa->sa_periph; 218 int error, result; 219 struct disk_parms *dp = &sd->params; 220 char pbuf[9]; 221 222 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 223 224 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 225 if (sd->type == T_SIMPLE_DIRECT) 226 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 227 228 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 229 periph->periph_version == 0) 230 sd->flags |= SDF_ANCIENT; 231 232 #ifdef NEW_BUFQ_STRATEGY 233 bufq_alloc(&sd->buf_queue, BUFQ_READ_PRIO|BUFQ_SORT_RAWBLOCK); 234 #else 235 bufq_alloc(&sd->buf_queue, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 236 #endif 237 238 /* 239 * Store information needed to contact our base driver 240 */ 241 sd->sc_periph = periph; 242 243 periph->periph_dev = &sd->sc_dev; 244 periph->periph_switch = &sd_switch; 245 246 /* 247 * Increase our openings to the maximum-per-periph 248 * supported by the adapter. This will either be 249 * clamped down or grown by the adapter if necessary. 250 */ 251 periph->periph_openings = 252 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 253 periph->periph_flags |= PERIPH_GROW_OPENINGS; 254 255 /* 256 * Initialize and attach the disk structure. 257 */ 258 sd->sc_dk.dk_driver = &sddkdriver; 259 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 260 disk_attach(&sd->sc_dk); 261 262 /* 263 * Use the subdriver to request information regarding the drive. 264 */ 265 aprint_naive("\n"); 266 aprint_normal("\n"); 267 268 error = scsipi_test_unit_ready(periph, 269 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 270 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 271 272 if (error) 273 result = SDGP_RESULT_OFFLINE; 274 else 275 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 276 aprint_normal("%s: ", sd->sc_dev.dv_xname); 277 switch (result) { 278 case SDGP_RESULT_OK: 279 format_bytes(pbuf, sizeof(pbuf), 280 (u_int64_t)dp->disksize * dp->blksize); 281 aprint_normal( 282 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 283 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 284 (unsigned long long)dp->disksize); 285 break; 286 287 case SDGP_RESULT_OFFLINE: 288 aprint_normal("drive offline"); 289 break; 290 291 case SDGP_RESULT_UNFORMATTED: 292 aprint_normal("unformatted media"); 293 break; 294 295 #ifdef DIAGNOSTIC 296 default: 297 panic("sdattach: unknown result from get_parms"); 298 break; 299 #endif 300 } 301 aprint_normal("\n"); 302 303 /* 304 * Establish a shutdown hook so that we can ensure that 305 * our data has actually made it onto the platter at 306 * shutdown time. Note that this relies on the fact 307 * that the shutdown hook code puts us at the head of 308 * the list (thus guaranteeing that our hook runs before 309 * our ancestors'). 310 */ 311 if ((sd->sc_sdhook = 312 shutdownhook_establish(sd_shutdown, sd)) == NULL) 313 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 314 sd->sc_dev.dv_xname); 315 316 #if NRND > 0 317 /* 318 * attach the device into the random source list 319 */ 320 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 321 RND_TYPE_DISK, 0); 322 #endif 323 } 324 325 int 326 sdactivate(self, act) 327 struct device *self; 328 enum devact act; 329 { 330 int rv = 0; 331 332 switch (act) { 333 case DVACT_ACTIVATE: 334 rv = EOPNOTSUPP; 335 break; 336 337 case DVACT_DEACTIVATE: 338 /* 339 * Nothing to do; we key off the device's DVF_ACTIVE. 340 */ 341 break; 342 } 343 return (rv); 344 } 345 346 int 347 sddetach(self, flags) 348 struct device *self; 349 int flags; 350 { 351 struct sd_softc *sd = (struct sd_softc *) self; 352 struct buf *bp; 353 int s, bmaj, cmaj, i, mn; 354 355 /* locate the major number */ 356 bmaj = bdevsw_lookup_major(&sd_bdevsw); 357 cmaj = cdevsw_lookup_major(&sd_cdevsw); 358 359 s = splbio(); 360 361 /* Kill off any queued buffers. */ 362 while ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 363 bp->b_error = EIO; 364 bp->b_flags |= B_ERROR; 365 bp->b_resid = bp->b_bcount; 366 biodone(bp); 367 } 368 369 bufq_free(&sd->buf_queue); 370 371 /* Kill off any pending commands. */ 372 scsipi_kill_pending(sd->sc_periph); 373 374 splx(s); 375 376 /* Nuke the vnodes for any open instances */ 377 for (i = 0; i < MAXPARTITIONS; i++) { 378 mn = SDMINOR(self->dv_unit, i); 379 vdevgone(bmaj, mn, mn, VBLK); 380 vdevgone(cmaj, mn, mn, VCHR); 381 } 382 383 /* Detach from the disk list. */ 384 disk_detach(&sd->sc_dk); 385 386 /* Get rid of the shutdown hook. */ 387 shutdownhook_disestablish(sd->sc_sdhook); 388 389 #if NRND > 0 390 /* Unhook the entropy source. */ 391 rnd_detach_source(&sd->rnd_source); 392 #endif 393 394 return (0); 395 } 396 397 /* 398 * Wait interruptibly for an exclusive lock. 399 * 400 * XXX 401 * Several drivers do this; it should be abstracted and made MP-safe. 402 */ 403 int 404 sdlock(sd) 405 struct sd_softc *sd; 406 { 407 int error; 408 409 while ((sd->flags & SDF_LOCKED) != 0) { 410 sd->flags |= SDF_WANTED; 411 if ((error = tsleep(sd, PRIBIO | PCATCH, "sdlck", 0)) != 0) 412 return (error); 413 } 414 sd->flags |= SDF_LOCKED; 415 return (0); 416 } 417 418 /* 419 * Unlock and wake up any waiters. 420 */ 421 void 422 sdunlock(sd) 423 struct sd_softc *sd; 424 { 425 426 sd->flags &= ~SDF_LOCKED; 427 if ((sd->flags & SDF_WANTED) != 0) { 428 sd->flags &= ~SDF_WANTED; 429 wakeup(sd); 430 } 431 } 432 433 /* 434 * open the device. Make sure the partition info is a up-to-date as can be. 435 */ 436 int 437 sdopen(dev, flag, fmt, p) 438 dev_t dev; 439 int flag, fmt; 440 struct proc *p; 441 { 442 struct sd_softc *sd; 443 struct scsipi_periph *periph; 444 struct scsipi_adapter *adapt; 445 int unit, part; 446 int error; 447 448 unit = SDUNIT(dev); 449 if (unit >= sd_cd.cd_ndevs) 450 return (ENXIO); 451 sd = sd_cd.cd_devs[unit]; 452 if (sd == NULL) 453 return (ENXIO); 454 455 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 456 return (ENODEV); 457 458 periph = sd->sc_periph; 459 adapt = periph->periph_channel->chan_adapter; 460 part = SDPART(dev); 461 462 SC_DEBUG(periph, SCSIPI_DB1, 463 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 464 sd_cd.cd_ndevs, part)); 465 466 /* 467 * If this is the first open of this device, add a reference 468 * to the adapter. 469 */ 470 if (sd->sc_dk.dk_openmask == 0 && 471 (error = scsipi_adapter_addref(adapt)) != 0) 472 return (error); 473 474 if ((error = sdlock(sd)) != 0) 475 goto bad4; 476 477 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 478 /* 479 * If any partition is open, but the disk has been invalidated, 480 * disallow further opens of non-raw partition 481 */ 482 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 483 (part != RAW_PART || fmt != S_IFCHR)) { 484 error = EIO; 485 goto bad3; 486 } 487 } else { 488 int silent; 489 490 if (part == RAW_PART && fmt == S_IFCHR) 491 silent = XS_CTL_SILENT; 492 else 493 silent = 0; 494 495 /* Check that it is still responding and ok. */ 496 error = scsipi_test_unit_ready(periph, 497 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 498 silent); 499 500 /* 501 * Start the pack spinning if necessary. Always allow the 502 * raw parition to be opened, for raw IOCTLs. Data transfers 503 * will check for SDEV_MEDIA_LOADED. 504 */ 505 if (error == EIO) { 506 int error2; 507 508 error2 = scsipi_start(periph, SSS_START, silent); 509 switch (error2) { 510 case 0: 511 error = 0; 512 break; 513 case EIO: 514 case EINVAL: 515 break; 516 default: 517 error = error2; 518 break; 519 } 520 } 521 if (error) { 522 if (silent) 523 goto out; 524 goto bad3; 525 } 526 527 periph->periph_flags |= PERIPH_OPEN; 528 529 if (periph->periph_flags & PERIPH_REMOVABLE) { 530 /* Lock the pack in. */ 531 error = scsipi_prevent(periph, PR_PREVENT, 532 XS_CTL_IGNORE_ILLEGAL_REQUEST | 533 XS_CTL_IGNORE_MEDIA_CHANGE); 534 if (error) 535 goto bad; 536 } 537 538 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 539 periph->periph_flags |= PERIPH_MEDIA_LOADED; 540 541 /* 542 * Load the physical device parameters. 543 * 544 * Note that if media is present but unformatted, 545 * we allow the open (so that it can be formatted!). 546 * The drive should refuse real I/O, if the media is 547 * unformatted. 548 */ 549 if (sd_get_parms(sd, &sd->params, 550 0) == SDGP_RESULT_OFFLINE) { 551 error = ENXIO; 552 goto bad2; 553 } 554 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 555 556 /* Load the partition info if not already loaded. */ 557 sdgetdisklabel(sd); 558 SC_DEBUG(periph, SCSIPI_DB3, ("Disklabel loaded ")); 559 } 560 } 561 562 /* Check that the partition exists. */ 563 if (part != RAW_PART && 564 (part >= sd->sc_dk.dk_label->d_npartitions || 565 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 566 error = ENXIO; 567 goto bad; 568 } 569 570 out: /* Insure only one open at a time. */ 571 switch (fmt) { 572 case S_IFCHR: 573 sd->sc_dk.dk_copenmask |= (1 << part); 574 break; 575 case S_IFBLK: 576 sd->sc_dk.dk_bopenmask |= (1 << part); 577 break; 578 } 579 sd->sc_dk.dk_openmask = 580 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 581 582 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 583 sdunlock(sd); 584 return (0); 585 586 bad2: 587 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 588 589 bad: 590 if (sd->sc_dk.dk_openmask == 0) { 591 if (periph->periph_flags & PERIPH_REMOVABLE) 592 scsipi_prevent(periph, PR_ALLOW, 593 XS_CTL_IGNORE_ILLEGAL_REQUEST | 594 XS_CTL_IGNORE_MEDIA_CHANGE); 595 periph->periph_flags &= ~PERIPH_OPEN; 596 } 597 598 bad3: 599 sdunlock(sd); 600 bad4: 601 if (sd->sc_dk.dk_openmask == 0) 602 scsipi_adapter_delref(adapt); 603 return (error); 604 } 605 606 /* 607 * close the device.. only called if we are the LAST occurence of an open 608 * device. Convenient now but usually a pain. 609 */ 610 int 611 sdclose(dev, flag, fmt, p) 612 dev_t dev; 613 int flag, fmt; 614 struct proc *p; 615 { 616 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 617 struct scsipi_periph *periph = sd->sc_periph; 618 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 619 int part = SDPART(dev); 620 int error; 621 622 if ((error = sdlock(sd)) != 0) 623 return (error); 624 625 switch (fmt) { 626 case S_IFCHR: 627 sd->sc_dk.dk_copenmask &= ~(1 << part); 628 break; 629 case S_IFBLK: 630 sd->sc_dk.dk_bopenmask &= ~(1 << part); 631 break; 632 } 633 sd->sc_dk.dk_openmask = 634 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 635 636 if (sd->sc_dk.dk_openmask == 0) { 637 /* 638 * If the disk cache needs flushing, and the disk supports 639 * it, do it now. 640 */ 641 if ((sd->flags & SDF_DIRTY) != 0) { 642 if (sd_flush(sd, 0)) { 643 printf("%s: cache synchronization failed\n", 644 sd->sc_dev.dv_xname); 645 sd->flags &= ~SDF_FLUSHING; 646 } else 647 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 648 } 649 650 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 651 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 652 653 scsipi_wait_drain(periph); 654 655 if (periph->periph_flags & PERIPH_REMOVABLE) 656 scsipi_prevent(periph, PR_ALLOW, 657 XS_CTL_IGNORE_ILLEGAL_REQUEST | 658 XS_CTL_IGNORE_NOT_READY); 659 periph->periph_flags &= ~PERIPH_OPEN; 660 661 scsipi_wait_drain(periph); 662 663 scsipi_adapter_delref(adapt); 664 } 665 666 sdunlock(sd); 667 return (0); 668 } 669 670 /* 671 * Actually translate the requested transfer into one the physical driver 672 * can understand. The transfer is described by a buf and will include 673 * only one physical transfer. 674 */ 675 void 676 sdstrategy(bp) 677 struct buf *bp; 678 { 679 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 680 struct scsipi_periph *periph = sd->sc_periph; 681 struct disklabel *lp; 682 daddr_t blkno; 683 int s; 684 boolean_t sector_aligned; 685 686 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 687 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 688 ("%ld bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 689 /* 690 * If the device has been made invalid, error out 691 */ 692 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 693 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 694 if (periph->periph_flags & PERIPH_OPEN) 695 bp->b_error = EIO; 696 else 697 bp->b_error = ENODEV; 698 goto bad; 699 } 700 701 lp = sd->sc_dk.dk_label; 702 703 /* 704 * The transfer must be a whole number of blocks, offset must not be 705 * negative. 706 */ 707 if (lp->d_secsize == DEV_BSIZE) { 708 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 709 } else { 710 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 711 } 712 if (!sector_aligned || bp->b_blkno < 0) { 713 bp->b_error = EINVAL; 714 goto bad; 715 } 716 /* 717 * If it's a null transfer, return immediatly 718 */ 719 if (bp->b_bcount == 0) 720 goto done; 721 722 /* 723 * Do bounds checking, adjust transfer. if error, process. 724 * If end of partition, just return. 725 */ 726 if (SDPART(bp->b_dev) == RAW_PART) { 727 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 728 sd->params.disksize512) <= 0) 729 goto done; 730 } else { 731 if (bounds_check_with_label(&sd->sc_dk, bp, 732 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 733 goto done; 734 } 735 736 /* 737 * Now convert the block number to absolute and put it in 738 * terms of the device's logical block size. 739 */ 740 if (lp->d_secsize == DEV_BSIZE) 741 blkno = bp->b_blkno; 742 else if (lp->d_secsize > DEV_BSIZE) 743 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 744 else 745 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 746 747 if (SDPART(bp->b_dev) != RAW_PART) 748 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 749 750 bp->b_rawblkno = blkno; 751 752 s = splbio(); 753 754 /* 755 * Place it in the queue of disk activities for this disk. 756 * 757 * XXX Only do disksort() if the current operating mode does not 758 * XXX include tagged queueing. 759 */ 760 BUFQ_PUT(&sd->buf_queue, bp); 761 762 /* 763 * Tell the device to get going on the transfer if it's 764 * not doing anything, otherwise just wait for completion 765 */ 766 sdstart(sd->sc_periph); 767 768 splx(s); 769 return; 770 771 bad: 772 bp->b_flags |= B_ERROR; 773 done: 774 /* 775 * Correctly set the buf to indicate a completed xfer 776 */ 777 bp->b_resid = bp->b_bcount; 778 biodone(bp); 779 } 780 781 /* 782 * sdstart looks to see if there is a buf waiting for the device 783 * and that the device is not already busy. If both are true, 784 * It dequeues the buf and creates a scsi command to perform the 785 * transfer in the buf. The transfer request will call scsipi_done 786 * on completion, which will in turn call this routine again 787 * so that the next queued transfer is performed. 788 * The bufs are queued by the strategy routine (sdstrategy) 789 * 790 * This routine is also called after other non-queued requests 791 * have been made of the scsi driver, to ensure that the queue 792 * continues to be drained. 793 * 794 * must be called at the correct (highish) spl level 795 * sdstart() is called at splbio from sdstrategy and scsipi_done 796 */ 797 void 798 sdstart(periph) 799 struct scsipi_periph *periph; 800 { 801 struct sd_softc *sd = (void *)periph->periph_dev; 802 struct disklabel *lp = sd->sc_dk.dk_label; 803 struct buf *bp = 0; 804 struct scsipi_rw_big cmd_big; 805 struct scsi_rw cmd_small; 806 struct scsipi_generic *cmdp; 807 int nblks, cmdlen, error, flags; 808 809 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 810 /* 811 * Check if the device has room for another command 812 */ 813 while (periph->periph_active < periph->periph_openings) { 814 /* 815 * there is excess capacity, but a special waits 816 * It'll need the adapter as soon as we clear out of the 817 * way and let it run (user level wait). 818 */ 819 if (periph->periph_flags & PERIPH_WAITING) { 820 periph->periph_flags &= ~PERIPH_WAITING; 821 wakeup((caddr_t)periph); 822 return; 823 } 824 825 /* 826 * See if there is a buf with work for us to do.. 827 */ 828 if ((bp = BUFQ_GET(&sd->buf_queue)) == NULL) 829 return; 830 831 /* 832 * If the device has become invalid, abort all the 833 * reads and writes until all files have been closed and 834 * re-opened 835 */ 836 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 837 bp->b_error = EIO; 838 bp->b_flags |= B_ERROR; 839 bp->b_resid = bp->b_bcount; 840 biodone(bp); 841 continue; 842 } 843 844 /* 845 * We have a buf, now we should make a command. 846 */ 847 848 if (lp->d_secsize == DEV_BSIZE) 849 nblks = bp->b_bcount >> DEV_BSHIFT; 850 else 851 nblks = howmany(bp->b_bcount, lp->d_secsize); 852 853 /* 854 * Fill out the scsi command. If the transfer will 855 * fit in a "small" cdb, use it. 856 */ 857 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 858 ((nblks & 0xff) == nblks) && 859 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 860 /* 861 * We can fit in a small cdb. 862 */ 863 memset(&cmd_small, 0, sizeof(cmd_small)); 864 cmd_small.opcode = (bp->b_flags & B_READ) ? 865 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 866 _lto3b(bp->b_rawblkno, cmd_small.addr); 867 cmd_small.length = nblks & 0xff; 868 cmdlen = sizeof(cmd_small); 869 cmdp = (struct scsipi_generic *)&cmd_small; 870 } else { 871 /* 872 * Need a large cdb. 873 */ 874 memset(&cmd_big, 0, sizeof(cmd_big)); 875 cmd_big.opcode = (bp->b_flags & B_READ) ? 876 READ_BIG : WRITE_BIG; 877 _lto4b(bp->b_rawblkno, cmd_big.addr); 878 _lto2b(nblks, cmd_big.length); 879 cmdlen = sizeof(cmd_big); 880 cmdp = (struct scsipi_generic *)&cmd_big; 881 } 882 883 /* Instrumentation. */ 884 disk_busy(&sd->sc_dk); 885 886 /* 887 * Mark the disk dirty so that the cache will be 888 * flushed on close. 889 */ 890 if ((bp->b_flags & B_READ) == 0) 891 sd->flags |= SDF_DIRTY; 892 893 /* 894 * Figure out what flags to use. 895 */ 896 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 897 if (bp->b_flags & B_READ) 898 flags |= XS_CTL_DATA_IN; 899 else 900 flags |= XS_CTL_DATA_OUT; 901 902 /* 903 * Call the routine that chats with the adapter. 904 * Note: we cannot sleep as we may be an interrupt 905 */ 906 error = scsipi_command(periph, cmdp, cmdlen, 907 (u_char *)bp->b_data, bp->b_bcount, 908 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 909 if (error) { 910 disk_unbusy(&sd->sc_dk, 0, 0); 911 printf("%s: not queued, error %d\n", 912 sd->sc_dev.dv_xname, error); 913 } 914 } 915 } 916 917 void 918 sddone(xs) 919 struct scsipi_xfer *xs; 920 { 921 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 922 923 if (sd->flags & SDF_FLUSHING) { 924 /* Flush completed, no longer dirty. */ 925 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 926 } 927 928 if (xs->bp != NULL) { 929 disk_unbusy(&sd->sc_dk, xs->bp->b_bcount - xs->bp->b_resid, 930 (xs->bp->b_flags & B_READ)); 931 #if NRND > 0 932 rnd_add_uint32(&sd->rnd_source, xs->bp->b_rawblkno); 933 #endif 934 } 935 } 936 937 void 938 sdminphys(bp) 939 struct buf *bp; 940 { 941 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 942 long max; 943 944 /* 945 * If the device is ancient, we want to make sure that 946 * the transfer fits into a 6-byte cdb. 947 * 948 * XXX Note that the SCSI-I spec says that 256-block transfers 949 * are allowed in a 6-byte read/write, and are specified 950 * by settng the "length" to 0. However, we're conservative 951 * here, allowing only 255-block transfers in case an 952 * ancient device gets confused by length == 0. A length of 0 953 * in a 10-byte read/write actually means 0 blocks. 954 */ 955 if ((sd->flags & SDF_ANCIENT) && 956 ((sd->sc_periph->periph_flags & 957 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 958 max = sd->sc_dk.dk_label->d_secsize * 0xff; 959 960 if (bp->b_bcount > max) 961 bp->b_bcount = max; 962 } 963 964 (*sd->sc_periph->periph_channel->chan_adapter->adapt_minphys)(bp); 965 } 966 967 int 968 sdread(dev, uio, ioflag) 969 dev_t dev; 970 struct uio *uio; 971 int ioflag; 972 { 973 974 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 975 } 976 977 int 978 sdwrite(dev, uio, ioflag) 979 dev_t dev; 980 struct uio *uio; 981 int ioflag; 982 { 983 984 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 985 } 986 987 /* 988 * Perform special action on behalf of the user 989 * Knows about the internals of this device 990 */ 991 int 992 sdioctl(dev, cmd, addr, flag, p) 993 dev_t dev; 994 u_long cmd; 995 caddr_t addr; 996 int flag; 997 struct proc *p; 998 { 999 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1000 struct scsipi_periph *periph = sd->sc_periph; 1001 int part = SDPART(dev); 1002 int error = 0; 1003 #ifdef __HAVE_OLD_DISKLABEL 1004 struct disklabel *newlabel = NULL; 1005 #endif 1006 1007 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1008 1009 /* 1010 * If the device is not valid, some IOCTLs can still be 1011 * handled on the raw partition. Check this here. 1012 */ 1013 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1014 switch (cmd) { 1015 case DIOCKLABEL: 1016 case DIOCWLABEL: 1017 case DIOCLOCK: 1018 case DIOCEJECT: 1019 case ODIOCEJECT: 1020 case DIOCGCACHE: 1021 case DIOCSCACHE: 1022 case SCIOCIDENTIFY: 1023 case OSCIOCIDENTIFY: 1024 case SCIOCCOMMAND: 1025 case SCIOCDEBUG: 1026 if (part == RAW_PART) 1027 break; 1028 /* FALLTHROUGH */ 1029 default: 1030 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1031 return (ENODEV); 1032 else 1033 return (EIO); 1034 } 1035 } 1036 1037 switch (cmd) { 1038 case DIOCGDINFO: 1039 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1040 return (0); 1041 1042 #ifdef __HAVE_OLD_DISKLABEL 1043 case ODIOCGDINFO: 1044 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1045 if (newlabel == NULL) 1046 return EIO; 1047 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1048 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1049 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1050 else 1051 error = ENOTTY; 1052 free(newlabel, M_TEMP); 1053 return error; 1054 #endif 1055 1056 case DIOCGPART: 1057 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1058 ((struct partinfo *)addr)->part = 1059 &sd->sc_dk.dk_label->d_partitions[part]; 1060 return (0); 1061 1062 case DIOCWDINFO: 1063 case DIOCSDINFO: 1064 #ifdef __HAVE_OLD_DISKLABEL 1065 case ODIOCWDINFO: 1066 case ODIOCSDINFO: 1067 #endif 1068 { 1069 struct disklabel *lp; 1070 1071 if ((flag & FWRITE) == 0) 1072 return (EBADF); 1073 1074 #ifdef __HAVE_OLD_DISKLABEL 1075 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1076 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1077 if (newlabel == NULL) 1078 return EIO; 1079 memset(newlabel, 0, sizeof newlabel); 1080 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1081 lp = newlabel; 1082 } else 1083 #endif 1084 lp = (struct disklabel *)addr; 1085 1086 if ((error = sdlock(sd)) != 0) 1087 goto bad; 1088 sd->flags |= SDF_LABELLING; 1089 1090 error = setdisklabel(sd->sc_dk.dk_label, 1091 lp, /*sd->sc_dk.dk_openmask : */0, 1092 sd->sc_dk.dk_cpulabel); 1093 if (error == 0) { 1094 if (cmd == DIOCWDINFO 1095 #ifdef __HAVE_OLD_DISKLABEL 1096 || cmd == ODIOCWDINFO 1097 #endif 1098 ) 1099 error = writedisklabel(SDLABELDEV(dev), 1100 sdstrategy, sd->sc_dk.dk_label, 1101 sd->sc_dk.dk_cpulabel); 1102 } 1103 1104 sd->flags &= ~SDF_LABELLING; 1105 sdunlock(sd); 1106 bad: 1107 #ifdef __HAVE_OLD_DISKLABEL 1108 if (newlabel != NULL) 1109 free(newlabel, M_TEMP); 1110 #endif 1111 return (error); 1112 } 1113 1114 case DIOCKLABEL: 1115 if (*(int *)addr) 1116 periph->periph_flags |= PERIPH_KEEP_LABEL; 1117 else 1118 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1119 return (0); 1120 1121 case DIOCWLABEL: 1122 if ((flag & FWRITE) == 0) 1123 return (EBADF); 1124 if (*(int *)addr) 1125 sd->flags |= SDF_WLABEL; 1126 else 1127 sd->flags &= ~SDF_WLABEL; 1128 return (0); 1129 1130 case DIOCLOCK: 1131 return (scsipi_prevent(periph, 1132 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1133 1134 case DIOCEJECT: 1135 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1136 return (ENOTTY); 1137 if (*(int *)addr == 0) { 1138 /* 1139 * Don't force eject: check that we are the only 1140 * partition open. If so, unlock it. 1141 */ 1142 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1143 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1144 sd->sc_dk.dk_openmask) { 1145 error = scsipi_prevent(periph, PR_ALLOW, 1146 XS_CTL_IGNORE_NOT_READY); 1147 if (error) 1148 return (error); 1149 } else { 1150 return (EBUSY); 1151 } 1152 } 1153 /* FALLTHROUGH */ 1154 case ODIOCEJECT: 1155 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1156 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1157 1158 case DIOCGDEFLABEL: 1159 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1160 return (0); 1161 1162 #ifdef __HAVE_OLD_DISKLABEL 1163 case ODIOCGDEFLABEL: 1164 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1165 if (newlabel == NULL) 1166 return EIO; 1167 sdgetdefaultlabel(sd, newlabel); 1168 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1169 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1170 else 1171 error = ENOTTY; 1172 free(newlabel, M_TEMP); 1173 return error; 1174 #endif 1175 1176 case DIOCGCACHE: 1177 return (sd_getcache(sd, (int *) addr)); 1178 1179 case DIOCSCACHE: 1180 if ((flag & FWRITE) == 0) 1181 return (EBADF); 1182 return (sd_setcache(sd, *(int *) addr)); 1183 1184 case DIOCCACHESYNC: 1185 /* 1186 * XXX Do we really need to care about having a writable 1187 * file descriptor here? 1188 */ 1189 if ((flag & FWRITE) == 0) 1190 return (EBADF); 1191 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1192 error = sd_flush(sd, 0); 1193 if (error) 1194 sd->flags &= ~SDF_FLUSHING; 1195 else 1196 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1197 } else 1198 error = 0; 1199 return (error); 1200 1201 default: 1202 if (part != RAW_PART) 1203 return (ENOTTY); 1204 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1205 } 1206 1207 #ifdef DIAGNOSTIC 1208 panic("sdioctl: impossible"); 1209 #endif 1210 } 1211 1212 void 1213 sdgetdefaultlabel(sd, lp) 1214 struct sd_softc *sd; 1215 struct disklabel *lp; 1216 { 1217 1218 memset(lp, 0, sizeof(struct disklabel)); 1219 1220 lp->d_secsize = sd->params.blksize; 1221 lp->d_ntracks = sd->params.heads; 1222 lp->d_nsectors = sd->params.sectors; 1223 lp->d_ncylinders = sd->params.cyls; 1224 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1225 1226 switch (scsipi_periph_bustype(sd->sc_periph)) { 1227 case SCSIPI_BUSTYPE_SCSI: 1228 lp->d_type = DTYPE_SCSI; 1229 break; 1230 case SCSIPI_BUSTYPE_ATAPI: 1231 lp->d_type = DTYPE_ATAPI; 1232 break; 1233 } 1234 /* 1235 * XXX 1236 * We could probe the mode pages to figure out what kind of disc it is. 1237 * Is this worthwhile? 1238 */ 1239 strncpy(lp->d_typename, "mydisk", 16); 1240 strncpy(lp->d_packname, "fictitious", 16); 1241 lp->d_secperunit = sd->params.disksize; 1242 lp->d_rpm = sd->params.rot_rate; 1243 lp->d_interleave = 1; 1244 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1245 D_REMOVABLE : 0; 1246 1247 lp->d_partitions[RAW_PART].p_offset = 0; 1248 lp->d_partitions[RAW_PART].p_size = 1249 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1250 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1251 lp->d_npartitions = RAW_PART + 1; 1252 1253 lp->d_magic = DISKMAGIC; 1254 lp->d_magic2 = DISKMAGIC; 1255 lp->d_checksum = dkcksum(lp); 1256 } 1257 1258 1259 /* 1260 * Load the label information on the named device 1261 */ 1262 void 1263 sdgetdisklabel(sd) 1264 struct sd_softc *sd; 1265 { 1266 struct disklabel *lp = sd->sc_dk.dk_label; 1267 const char *errstring; 1268 1269 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1270 1271 sdgetdefaultlabel(sd, lp); 1272 1273 if (lp->d_secpercyl == 0) { 1274 lp->d_secpercyl = 100; 1275 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1276 } 1277 1278 /* 1279 * Call the generic disklabel extraction routine 1280 */ 1281 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1282 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1283 if (errstring) { 1284 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1285 return; 1286 } 1287 } 1288 1289 void 1290 sd_shutdown(arg) 1291 void *arg; 1292 { 1293 struct sd_softc *sd = arg; 1294 1295 /* 1296 * If the disk cache needs to be flushed, and the disk supports 1297 * it, flush it. We're cold at this point, so we poll for 1298 * completion. 1299 */ 1300 if ((sd->flags & SDF_DIRTY) != 0) { 1301 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1302 printf("%s: cache synchronization failed\n", 1303 sd->sc_dev.dv_xname); 1304 sd->flags &= ~SDF_FLUSHING; 1305 } else 1306 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1307 } 1308 } 1309 1310 /* 1311 * Tell the device to map out a defective block 1312 */ 1313 int 1314 sd_reassign_blocks(sd, blkno) 1315 struct sd_softc *sd; 1316 u_long blkno; 1317 { 1318 struct scsi_reassign_blocks scsipi_cmd; 1319 struct scsi_reassign_blocks_data rbdata; 1320 1321 memset(&scsipi_cmd, 0, sizeof(scsipi_cmd)); 1322 memset(&rbdata, 0, sizeof(rbdata)); 1323 scsipi_cmd.opcode = SCSI_REASSIGN_BLOCKS; 1324 1325 _lto2b(sizeof(rbdata.defect_descriptor[0]), rbdata.length); 1326 _lto4b(blkno, rbdata.defect_descriptor[0].dlbaddr); 1327 1328 return (scsipi_command(sd->sc_periph, 1329 (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), 1330 (u_char *)&rbdata, sizeof(rbdata), SDRETRIES, 5000, NULL, 1331 XS_CTL_DATA_OUT | XS_CTL_DATA_ONSTACK)); 1332 } 1333 1334 /* 1335 * Check Errors 1336 */ 1337 int 1338 sd_interpret_sense(xs) 1339 struct scsipi_xfer *xs; 1340 { 1341 struct scsipi_periph *periph = xs->xs_periph; 1342 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1343 struct sd_softc *sd = (void *)periph->periph_dev; 1344 int s, error, retval = EJUSTRETURN; 1345 1346 /* 1347 * If the periph is already recovering, just do the normal 1348 * error processing. 1349 */ 1350 if (periph->periph_flags & PERIPH_RECOVERING) 1351 return (retval); 1352 1353 /* 1354 * If the device is not open yet, let the generic code handle it. 1355 */ 1356 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1357 return (retval); 1358 1359 /* 1360 * If it isn't a extended or extended/deferred error, let 1361 * the generic code handle it. 1362 */ 1363 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1364 (sense->error_code & SSD_ERRCODE) != 0x71) 1365 return (retval); 1366 1367 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1368 sense->add_sense_code == 0x4) { 1369 if (sense->add_sense_code_qual == 0x01) { 1370 /* 1371 * Unit In The Process Of Becoming Ready. 1372 */ 1373 printf("%s: waiting for pack to spin up...\n", 1374 sd->sc_dev.dv_xname); 1375 if (!callout_pending(&periph->periph_callout)) 1376 scsipi_periph_freeze(periph, 1); 1377 callout_reset(&periph->periph_callout, 1378 5 * hz, scsipi_periph_timed_thaw, periph); 1379 retval = ERESTART; 1380 } else if (sense->add_sense_code_qual == 0x02) { 1381 printf("%s: pack is stopped, restarting...\n", 1382 sd->sc_dev.dv_xname); 1383 s = splbio(); 1384 periph->periph_flags |= PERIPH_RECOVERING; 1385 splx(s); 1386 error = scsipi_start(periph, SSS_START, 1387 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1388 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1389 if (error) { 1390 printf("%s: unable to restart pack\n", 1391 sd->sc_dev.dv_xname); 1392 retval = error; 1393 } else 1394 retval = ERESTART; 1395 s = splbio(); 1396 periph->periph_flags &= ~PERIPH_RECOVERING; 1397 splx(s); 1398 } 1399 } 1400 return (retval); 1401 } 1402 1403 1404 int 1405 sdsize(dev) 1406 dev_t dev; 1407 { 1408 struct sd_softc *sd; 1409 int part, unit, omask; 1410 int size; 1411 1412 unit = SDUNIT(dev); 1413 if (unit >= sd_cd.cd_ndevs) 1414 return (-1); 1415 sd = sd_cd.cd_devs[unit]; 1416 if (sd == NULL) 1417 return (-1); 1418 1419 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1420 return (-1); 1421 1422 part = SDPART(dev); 1423 omask = sd->sc_dk.dk_openmask & (1 << part); 1424 1425 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1426 return (-1); 1427 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1428 size = -1; 1429 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1430 size = -1; 1431 else 1432 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1433 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1434 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1435 return (-1); 1436 return (size); 1437 } 1438 1439 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1440 static struct scsipi_xfer sx; 1441 static int sddoingadump; 1442 1443 /* 1444 * dump all of physical memory into the partition specified, starting 1445 * at offset 'dumplo' into the partition. 1446 */ 1447 int 1448 sddump(dev, blkno, va, size) 1449 dev_t dev; 1450 daddr_t blkno; 1451 caddr_t va; 1452 size_t size; 1453 { 1454 struct sd_softc *sd; /* disk unit to do the I/O */ 1455 struct disklabel *lp; /* disk's disklabel */ 1456 int unit, part; 1457 int sectorsize; /* size of a disk sector */ 1458 int nsects; /* number of sectors in partition */ 1459 int sectoff; /* sector offset of partition */ 1460 int totwrt; /* total number of sectors left to write */ 1461 int nwrt; /* current number of sectors to write */ 1462 struct scsipi_rw_big cmd; /* write command */ 1463 struct scsipi_xfer *xs; /* ... convenience */ 1464 struct scsipi_periph *periph; 1465 struct scsipi_channel *chan; 1466 1467 /* Check if recursive dump; if so, punt. */ 1468 if (sddoingadump) 1469 return (EFAULT); 1470 1471 /* Mark as active early. */ 1472 sddoingadump = 1; 1473 1474 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1475 part = SDPART(dev); 1476 1477 /* Check for acceptable drive number. */ 1478 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1479 return (ENXIO); 1480 1481 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1482 return (ENODEV); 1483 1484 periph = sd->sc_periph; 1485 chan = periph->periph_channel; 1486 1487 /* Make sure it was initialized. */ 1488 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1489 return (ENXIO); 1490 1491 /* Convert to disk sectors. Request must be a multiple of size. */ 1492 lp = sd->sc_dk.dk_label; 1493 sectorsize = lp->d_secsize; 1494 if ((size % sectorsize) != 0) 1495 return (EFAULT); 1496 totwrt = size / sectorsize; 1497 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1498 1499 nsects = lp->d_partitions[part].p_size; 1500 sectoff = lp->d_partitions[part].p_offset; 1501 1502 /* Check transfer bounds against partition size. */ 1503 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1504 return (EINVAL); 1505 1506 /* Offset block number to start of partition. */ 1507 blkno += sectoff; 1508 1509 xs = &sx; 1510 1511 while (totwrt > 0) { 1512 nwrt = totwrt; /* XXX */ 1513 #ifndef SD_DUMP_NOT_TRUSTED 1514 /* 1515 * Fill out the scsi command 1516 */ 1517 memset(&cmd, 0, sizeof(cmd)); 1518 cmd.opcode = WRITE_BIG; 1519 _lto4b(blkno, cmd.addr); 1520 _lto2b(nwrt, cmd.length); 1521 /* 1522 * Fill out the scsipi_xfer structure 1523 * Note: we cannot sleep as we may be an interrupt 1524 * don't use scsipi_command() as it may want to wait 1525 * for an xs. 1526 */ 1527 memset(xs, 0, sizeof(sx)); 1528 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1529 XS_CTL_DATA_OUT; 1530 xs->xs_status = 0; 1531 xs->xs_periph = periph; 1532 xs->xs_retries = SDRETRIES; 1533 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1534 xs->cmd = (struct scsipi_generic *)&cmd; 1535 xs->cmdlen = sizeof(cmd); 1536 xs->resid = nwrt * sectorsize; 1537 xs->error = XS_NOERROR; 1538 xs->bp = 0; 1539 xs->data = va; 1540 xs->datalen = nwrt * sectorsize; 1541 1542 /* 1543 * Pass all this info to the scsi driver. 1544 */ 1545 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1546 if ((xs->xs_status & XS_STS_DONE) == 0 || 1547 xs->error != XS_NOERROR) 1548 return (EIO); 1549 #else /* SD_DUMP_NOT_TRUSTED */ 1550 /* Let's just talk about this first... */ 1551 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1552 delay(500 * 1000); /* half a second */ 1553 #endif /* SD_DUMP_NOT_TRUSTED */ 1554 1555 /* update block count */ 1556 totwrt -= nwrt; 1557 blkno += nwrt; 1558 va += sectorsize * nwrt; 1559 } 1560 sddoingadump = 0; 1561 return (0); 1562 } 1563 1564 int 1565 sd_mode_sense(sd, byte2, sense, size, page, flags, big) 1566 struct sd_softc *sd; 1567 u_int8_t byte2; 1568 void *sense; 1569 size_t size; 1570 int page, flags; 1571 int *big; 1572 { 1573 1574 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1575 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1576 *big = 1; 1577 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1578 size + sizeof(struct scsipi_mode_header_big), 1579 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1580 } else { 1581 *big = 0; 1582 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1583 size + sizeof(struct scsipi_mode_header), 1584 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1585 } 1586 } 1587 1588 int 1589 sd_mode_select(sd, byte2, sense, size, flags, big) 1590 struct sd_softc *sd; 1591 u_int8_t byte2; 1592 void *sense; 1593 size_t size; 1594 int flags, big; 1595 { 1596 1597 if (big) { 1598 struct scsipi_mode_header_big *header = sense; 1599 1600 _lto2b(0, header->data_length); 1601 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1602 size + sizeof(struct scsipi_mode_header_big), 1603 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1604 } else { 1605 struct scsipi_mode_header *header = sense; 1606 1607 header->data_length = 0; 1608 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1609 size + sizeof(struct scsipi_mode_header), 1610 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1611 } 1612 } 1613 1614 int 1615 sd_get_simplifiedparms(sd, dp, flags) 1616 struct sd_softc *sd; 1617 struct disk_parms *dp; 1618 int flags; 1619 { 1620 struct { 1621 struct scsipi_mode_header header; 1622 /* no block descriptor */ 1623 u_int8_t pg_code; /* page code (should be 6) */ 1624 u_int8_t pg_length; /* page length (should be 11) */ 1625 u_int8_t wcd; /* bit0: cache disable */ 1626 u_int8_t lbs[2]; /* logical block size */ 1627 u_int8_t size[5]; /* number of log. blocks */ 1628 u_int8_t pp; /* power/performance */ 1629 u_int8_t flags; 1630 u_int8_t resvd; 1631 } scsipi_sense; 1632 u_int64_t sectors; 1633 int error; 1634 1635 /* 1636 * scsipi_size (ie "read capacity") and mode sense page 6 1637 * give the same information. Do both for now, and check 1638 * for consistency. 1639 * XXX probably differs for removable media 1640 */ 1641 dp->blksize = 512; 1642 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1643 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1644 1645 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1646 &scsipi_sense.header, sizeof(scsipi_sense), 1647 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1648 1649 if (error != 0) 1650 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1651 1652 dp->blksize = _2btol(scsipi_sense.lbs); 1653 if (dp->blksize == 0) 1654 dp->blksize = 512; 1655 1656 /* 1657 * Create a pseudo-geometry. 1658 */ 1659 dp->heads = 64; 1660 dp->sectors = 32; 1661 dp->cyls = sectors / (dp->heads * dp->sectors); 1662 dp->disksize = _5btol(scsipi_sense.size); 1663 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1664 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1665 (unsigned long long)dp->disksize, 1666 (unsigned long long)sectors); 1667 dp->disksize = sectors; 1668 } 1669 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1670 1671 return (SDGP_RESULT_OK); 1672 } 1673 1674 /* 1675 * Get the scsi driver to send a full inquiry to the * device and use the 1676 * results to fill out the disk parameter structure. 1677 */ 1678 int 1679 sd_get_capacity(sd, dp, flags) 1680 struct sd_softc *sd; 1681 struct disk_parms *dp; 1682 int flags; 1683 { 1684 u_int64_t sectors; 1685 int error; 1686 #if 0 1687 int i; 1688 u_int8_t *p; 1689 #endif 1690 1691 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1692 if (sectors == 0) { 1693 struct scsipi_read_format_capacities scsipi_cmd; 1694 struct { 1695 struct scsipi_capacity_list_header header; 1696 struct scsipi_capacity_descriptor desc; 1697 } __attribute__((packed)) scsipi_result; 1698 1699 memset(&scsipi_cmd, 0, sizeof(scsipi_cmd)); 1700 memset(&scsipi_result, 0, sizeof(scsipi_result)); 1701 scsipi_cmd.opcode = READ_FORMAT_CAPACITIES; 1702 _lto2b(sizeof(scsipi_result), scsipi_cmd.length); 1703 error = scsipi_command(sd->sc_periph, (void *)&scsipi_cmd, 1704 sizeof(scsipi_cmd), (void *)&scsipi_result, 1705 sizeof(scsipi_result), SDRETRIES, 20000, 1706 NULL, flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK /*| 1707 XS_CTL_IGNORE_ILLEGAL_REQUEST*/); 1708 if (error || scsipi_result.header.length == 0) 1709 return (SDGP_RESULT_OFFLINE); 1710 1711 #if 0 1712 printf("rfc: length=%d\n", scsipi_result.header.length); 1713 printf("rfc result:"); for (i = sizeof(struct scsipi_capacity_list_header) + scsipi_result.header.length, p = (void *)&scsipi_result; i; i--, p++) printf(" %02x", *p); printf("\n"); 1714 #endif 1715 switch (scsipi_result.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1716 case SCSIPI_CAP_DESC_CODE_RESERVED: 1717 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1718 break; 1719 1720 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1721 return (SDGP_RESULT_UNFORMATTED); 1722 1723 case SCSIPI_CAP_DESC_CODE_NONE: 1724 return (SDGP_RESULT_OFFLINE); 1725 } 1726 1727 dp->disksize = sectors = _4btol(scsipi_result.desc.nblks); 1728 if (sectors == 0) 1729 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1730 1731 dp->blksize = _3btol(scsipi_result.desc.blklen); 1732 if (dp->blksize == 0) 1733 dp->blksize = 512; 1734 } else { 1735 struct sd_mode_sense_data scsipi_sense; 1736 int big, bsize; 1737 struct scsi_blk_desc *bdesc; 1738 1739 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1740 error = sd_mode_sense(sd, 0, &scsipi_sense, 1741 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1742 dp->blksize = 512; 1743 if (!error) { 1744 if (big) { 1745 bdesc = (void *)(&scsipi_sense.header.big + 1); 1746 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1747 } else { 1748 bdesc = (void *)(&scsipi_sense.header.small + 1); 1749 bsize = scsipi_sense.header.small.blk_desc_len; 1750 } 1751 1752 #if 0 1753 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1754 printf("page 0 bsize=%d\n", bsize); 1755 printf("page 0 ok\n"); 1756 #endif 1757 1758 if (bsize >= 8) { 1759 dp->blksize = _3btol(bdesc->blklen); 1760 if (dp->blksize == 0) 1761 dp->blksize = 512; 1762 } 1763 } 1764 } 1765 1766 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1767 return (0); 1768 } 1769 1770 int 1771 sd_get_parms(sd, dp, flags) 1772 struct sd_softc *sd; 1773 struct disk_parms *dp; 1774 int flags; 1775 { 1776 struct sd_mode_sense_data scsipi_sense; 1777 int error; 1778 int big; 1779 int byte2; 1780 union scsi_disk_pages *pages; 1781 #if 0 1782 int i; 1783 u_int8_t *p; 1784 #endif 1785 1786 /* 1787 * If offline, the SDEV_MEDIA_LOADED flag will be 1788 * cleared by the caller if necessary. 1789 */ 1790 if (sd->type == T_SIMPLE_DIRECT) 1791 return (sd_get_simplifiedparms(sd, dp, flags)); 1792 1793 error = sd_get_capacity(sd, dp, flags); 1794 if (error) 1795 return (error); 1796 1797 if (sd->type == T_OPTICAL) 1798 goto page0; 1799 1800 /* Try MODE SENSE with `disable block descriptors' first */ 1801 byte2 = SMS_DBD; 1802 do_ms_again: 1803 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1804 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1805 sizeof(scsipi_sense.blk_desc) + 1806 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1807 flags | XS_CTL_SILENT, &big); 1808 if (error != 0 && byte2 == SMS_DBD) { 1809 /* No result; try once more with DBD off */ 1810 byte2 = 0; 1811 goto do_ms_again; 1812 } 1813 1814 if (!error) { 1815 int poffset; 1816 if (big) { 1817 poffset = sizeof scsipi_sense.header.big; 1818 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1819 } else { 1820 poffset = sizeof scsipi_sense.header.small; 1821 poffset += scsipi_sense.header.small.blk_desc_len; 1822 } 1823 1824 pages = (void *)((u_long)&scsipi_sense + poffset); 1825 #if 0 1826 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1827 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1828 #endif 1829 1830 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1831 goto page5; 1832 1833 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1834 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1835 _3btol(pages->rigid_geometry.ncyl), 1836 pages->rigid_geometry.nheads, 1837 _2btol(pages->rigid_geometry.st_cyl_wp), 1838 _2btol(pages->rigid_geometry.st_cyl_rwc), 1839 _2btol(pages->rigid_geometry.land_zone))); 1840 1841 /* 1842 * KLUDGE!! (for zone recorded disks) 1843 * give a number of sectors so that sec * trks * cyls 1844 * is <= disk_size 1845 * can lead to wasted space! THINK ABOUT THIS ! 1846 */ 1847 dp->heads = pages->rigid_geometry.nheads; 1848 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1849 if (dp->heads == 0 || dp->cyls == 0) 1850 goto page5; 1851 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1852 1853 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1854 if (dp->rot_rate == 0) 1855 dp->rot_rate = 3600; 1856 1857 #if 0 1858 printf("page 4 ok\n"); 1859 #endif 1860 goto blksize; 1861 } 1862 1863 page5: 1864 /* XXX - Try with SMS_DBD first, like in the page 4 case? */ 1865 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1866 error = sd_mode_sense(sd, 0, &scsipi_sense, 1867 sizeof(scsipi_sense.blk_desc) + 1868 sizeof(scsipi_sense.pages.flex_geometry), 5, 1869 flags | XS_CTL_SILENT, &big); 1870 if (!error) { 1871 int poffset; 1872 if (big) { 1873 poffset = sizeof scsipi_sense.header.big; 1874 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1875 } else { 1876 poffset = sizeof scsipi_sense.header.small; 1877 poffset += scsipi_sense.header.small.blk_desc_len; 1878 } 1879 1880 pages = (void *)((u_long)&scsipi_sense + poffset); 1881 1882 #if 0 1883 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1884 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1885 #endif 1886 1887 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1888 goto page0; 1889 1890 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1891 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1892 _3btol(pages->flex_geometry.ncyl), 1893 pages->flex_geometry.nheads, 1894 pages->flex_geometry.ph_sec_tr, 1895 _2btol(pages->flex_geometry.bytes_s))); 1896 1897 dp->heads = pages->flex_geometry.nheads; 1898 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1899 dp->sectors = pages->flex_geometry.ph_sec_tr; 1900 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1901 goto page0; 1902 1903 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1904 if (dp->rot_rate == 0) 1905 dp->rot_rate = 3600; 1906 1907 #if 0 1908 printf("page 5 ok\n"); 1909 #endif 1910 goto blksize; 1911 } 1912 1913 page0: 1914 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1915 /* Try calling driver's method for figuring out geometry. */ 1916 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1917 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1918 (sd->sc_periph, dp, dp->disksize)) { 1919 /* 1920 * Use adaptec standard fictitious geometry 1921 * this depends on which controller (e.g. 1542C is 1922 * different. but we have to put SOMETHING here..) 1923 */ 1924 dp->heads = 64; 1925 dp->sectors = 32; 1926 dp->cyls = dp->disksize / (64 * 32); 1927 } 1928 dp->rot_rate = 3600; 1929 1930 blksize: 1931 return (SDGP_RESULT_OK); 1932 } 1933 1934 int 1935 sd_flush(sd, flags) 1936 struct sd_softc *sd; 1937 int flags; 1938 { 1939 struct scsipi_periph *periph = sd->sc_periph; 1940 struct scsi_synchronize_cache sync_cmd; 1941 1942 /* 1943 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1944 * We issue with address 0 length 0, which should be 1945 * interpreted by the device as "all remaining blocks 1946 * starting at address 0". We ignore ILLEGAL REQUEST 1947 * in the event that the command is not supported by 1948 * the device, and poll for completion so that we know 1949 * that the cache has actually been flushed. 1950 * 1951 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1952 * command, as indicated by our quirks flags. 1953 * 1954 * XXX What about older devices? 1955 */ 1956 if (periph->periph_version >= 2 && 1957 (periph->periph_quirks & PQUIRK_NOSYNCCACHE) == 0) { 1958 sd->flags |= SDF_FLUSHING; 1959 memset(&sync_cmd, 0, sizeof(sync_cmd)); 1960 sync_cmd.opcode = SCSI_SYNCHRONIZE_CACHE; 1961 1962 return(scsipi_command(periph, 1963 (struct scsipi_generic *)&sync_cmd, sizeof(sync_cmd), 1964 NULL, 0, SDRETRIES, 100000, NULL, 1965 flags|XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1966 } else 1967 return (0); 1968 } 1969 1970 int 1971 sd_getcache(sd, bitsp) 1972 struct sd_softc *sd; 1973 int *bitsp; 1974 { 1975 struct scsipi_periph *periph = sd->sc_periph; 1976 struct sd_mode_sense_data scsipi_sense; 1977 int error, bits = 0; 1978 int big; 1979 union scsi_disk_pages *pages; 1980 1981 if (periph->periph_version < 2) 1982 return (EOPNOTSUPP); 1983 1984 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1985 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1986 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1987 if (error) 1988 return (error); 1989 1990 if (big) 1991 pages = (void *)(&scsipi_sense.header.big + 1); 1992 else 1993 pages = (void *)(&scsipi_sense.header.small + 1); 1994 1995 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1996 bits |= DKCACHE_READ; 1997 if (pages->caching_params.flags & CACHING_WCE) 1998 bits |= DKCACHE_WRITE; 1999 if (pages->caching_params.pg_code & PGCODE_PS) 2000 bits |= DKCACHE_SAVE; 2001 2002 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2003 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2004 sizeof(scsipi_sense.pages.caching_params), 2005 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 2006 if (error == 0) { 2007 if (big) 2008 pages = (void *)(&scsipi_sense.header.big + 1); 2009 else 2010 pages = (void *)(&scsipi_sense.header.small + 1); 2011 2012 if (pages->caching_params.flags & CACHING_RCD) 2013 bits |= DKCACHE_RCHANGE; 2014 if (pages->caching_params.flags & CACHING_WCE) 2015 bits |= DKCACHE_WCHANGE; 2016 } 2017 2018 *bitsp = bits; 2019 2020 return (0); 2021 } 2022 2023 int 2024 sd_setcache(sd, bits) 2025 struct sd_softc *sd; 2026 int bits; 2027 { 2028 struct scsipi_periph *periph = sd->sc_periph; 2029 struct sd_mode_sense_data scsipi_sense; 2030 int error; 2031 uint8_t oflags, byte2 = 0; 2032 int big; 2033 union scsi_disk_pages *pages; 2034 2035 if (periph->periph_version < 2) 2036 return (EOPNOTSUPP); 2037 2038 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2039 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2040 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2041 if (error) 2042 return (error); 2043 2044 if (big) 2045 pages = (void *)(&scsipi_sense.header.big + 1); 2046 else 2047 pages = (void *)(&scsipi_sense.header.small + 1); 2048 2049 oflags = pages->caching_params.flags; 2050 2051 if (bits & DKCACHE_READ) 2052 pages->caching_params.flags &= ~CACHING_RCD; 2053 else 2054 pages->caching_params.flags |= CACHING_RCD; 2055 2056 if (bits & DKCACHE_WRITE) 2057 pages->caching_params.flags |= CACHING_WCE; 2058 else 2059 pages->caching_params.flags &= ~CACHING_WCE; 2060 2061 if (oflags == pages->caching_params.flags) 2062 return (0); 2063 2064 pages->caching_params.pg_code &= PGCODE_MASK; 2065 2066 if (bits & DKCACHE_SAVE) 2067 byte2 |= SMS_SP; 2068 2069 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2070 sizeof(struct scsipi_mode_page_header) + 2071 pages->caching_params.pg_length, 0, big)); 2072 } 2073