1 /* $NetBSD: sd.c,v 1.223 2004/09/09 19:35:32 bouyer 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 1.223 2004/09/09 19:35:32 bouyer 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 static int sdlock(struct sd_softc *); 99 static void sdunlock(struct sd_softc *); 100 static void sdminphys(struct buf *); 101 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 102 static void sdgetdisklabel(struct sd_softc *); 103 static void sdstart(struct scsipi_periph *); 104 static void sdrestart(void *); 105 static void sddone(struct scsipi_xfer *); 106 static void sd_shutdown(void *); 107 static int sd_interpret_sense(struct scsipi_xfer *); 108 109 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int, int *); 111 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 112 int); 113 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 114 int); 115 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 117 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 118 int); 119 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 120 int); 121 122 static int sd_flush(struct sd_softc *, int); 123 static int sd_getcache(struct sd_softc *, int *); 124 static int sd_setcache(struct sd_softc *, int); 125 126 static int sdmatch(struct device *, struct cfdata *, void *); 127 static void sdattach(struct device *, struct device *, void *); 128 static int sdactivate(struct device *, enum devact); 129 static int sddetach(struct device *, int); 130 131 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 132 sdactivate); 133 134 extern struct cfdriver sd_cd; 135 136 static const struct scsipi_inquiry_pattern sd_patterns[] = { 137 {T_DIRECT, T_FIXED, 138 "", "", ""}, 139 {T_DIRECT, T_REMOV, 140 "", "", ""}, 141 {T_OPTICAL, T_FIXED, 142 "", "", ""}, 143 {T_OPTICAL, T_REMOV, 144 "", "", ""}, 145 {T_SIMPLE_DIRECT, T_FIXED, 146 "", "", ""}, 147 {T_SIMPLE_DIRECT, T_REMOV, 148 "", "", ""}, 149 }; 150 151 static dev_type_open(sdopen); 152 static dev_type_close(sdclose); 153 static dev_type_read(sdread); 154 static dev_type_write(sdwrite); 155 static dev_type_ioctl(sdioctl); 156 static dev_type_strategy(sdstrategy); 157 static dev_type_dump(sddump); 158 static dev_type_size(sdsize); 159 160 const struct bdevsw sd_bdevsw = { 161 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 162 }; 163 164 const struct cdevsw sd_cdevsw = { 165 sdopen, sdclose, sdread, sdwrite, sdioctl, 166 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 167 }; 168 169 static struct dkdriver sddkdriver = { sdstrategy }; 170 171 static const struct scsipi_periphsw sd_switch = { 172 sd_interpret_sense, /* check our error handler first */ 173 sdstart, /* have a queue, served by this */ 174 NULL, /* have no async handler */ 175 sddone, /* deal with stats at interrupt time */ 176 }; 177 178 struct sd_mode_sense_data { 179 /* 180 * XXX 181 * We are not going to parse this as-is -- it just has to be large 182 * enough. 183 */ 184 union { 185 struct scsipi_mode_header small; 186 struct scsipi_mode_header_big big; 187 } header; 188 struct scsi_blk_desc blk_desc; 189 union scsi_disk_pages pages; 190 }; 191 192 /* 193 * The routine called by the low level scsi routine when it discovers 194 * A device suitable for this driver 195 */ 196 static int 197 sdmatch(struct device *parent, struct cfdata *match, void *aux) 198 { 199 struct scsipibus_attach_args *sa = aux; 200 int priority; 201 202 (void)scsipi_inqmatch(&sa->sa_inqbuf, 203 (caddr_t)sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 204 sizeof(sd_patterns[0]), &priority); 205 206 return (priority); 207 } 208 209 /* 210 * Attach routine common to atapi & scsi. 211 */ 212 static void 213 sdattach(struct device *parent, struct device *self, 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 bufq_alloc(&sd->buf_queue, 233 BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 234 235 callout_init(&sd->sc_callout); 236 237 /* 238 * Store information needed to contact our base driver 239 */ 240 sd->sc_periph = periph; 241 242 periph->periph_dev = &sd->sc_dev; 243 periph->periph_switch = &sd_switch; 244 245 /* 246 * Increase our openings to the maximum-per-periph 247 * supported by the adapter. This will either be 248 * clamped down or grown by the adapter if necessary. 249 */ 250 periph->periph_openings = 251 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 252 periph->periph_flags |= PERIPH_GROW_OPENINGS; 253 254 /* 255 * Initialize and attach the disk structure. 256 */ 257 sd->sc_dk.dk_driver = &sddkdriver; 258 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 259 disk_attach(&sd->sc_dk); 260 261 /* 262 * Use the subdriver to request information regarding the drive. 263 */ 264 aprint_naive("\n"); 265 aprint_normal("\n"); 266 267 error = scsipi_test_unit_ready(periph, 268 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 269 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 270 271 if (error) 272 result = SDGP_RESULT_OFFLINE; 273 else 274 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 275 aprint_normal("%s: ", sd->sc_dev.dv_xname); 276 switch (result) { 277 case SDGP_RESULT_OK: 278 format_bytes(pbuf, sizeof(pbuf), 279 (u_int64_t)dp->disksize * dp->blksize); 280 aprint_normal( 281 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 282 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 283 (unsigned long long)dp->disksize); 284 break; 285 286 case SDGP_RESULT_OFFLINE: 287 aprint_normal("drive offline"); 288 break; 289 290 case SDGP_RESULT_UNFORMATTED: 291 aprint_normal("unformatted media"); 292 break; 293 294 #ifdef DIAGNOSTIC 295 default: 296 panic("sdattach: unknown result from get_parms"); 297 break; 298 #endif 299 } 300 aprint_normal("\n"); 301 302 /* 303 * Establish a shutdown hook so that we can ensure that 304 * our data has actually made it onto the platter at 305 * shutdown time. Note that this relies on the fact 306 * that the shutdown hook code puts us at the head of 307 * the list (thus guaranteeing that our hook runs before 308 * our ancestors'). 309 */ 310 if ((sd->sc_sdhook = 311 shutdownhook_establish(sd_shutdown, sd)) == NULL) 312 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 313 sd->sc_dev.dv_xname); 314 315 #if NRND > 0 316 /* 317 * attach the device into the random source list 318 */ 319 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 320 RND_TYPE_DISK, 0); 321 #endif 322 } 323 324 static int 325 sdactivate(struct device *self, enum devact act) 326 { 327 int rv = 0; 328 329 switch (act) { 330 case DVACT_ACTIVATE: 331 rv = EOPNOTSUPP; 332 break; 333 334 case DVACT_DEACTIVATE: 335 /* 336 * Nothing to do; we key off the device's DVF_ACTIVE. 337 */ 338 break; 339 } 340 return (rv); 341 } 342 343 static int 344 sddetach(struct device *self, int flags) 345 { 346 struct sd_softc *sd = (struct sd_softc *) self; 347 struct buf *bp; 348 int s, bmaj, cmaj, i, mn; 349 350 /* locate the major number */ 351 bmaj = bdevsw_lookup_major(&sd_bdevsw); 352 cmaj = cdevsw_lookup_major(&sd_cdevsw); 353 354 /* kill any pending restart */ 355 callout_stop(&sd->sc_callout); 356 357 s = splbio(); 358 359 /* Kill off any queued buffers. */ 360 while ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 361 bp->b_error = EIO; 362 bp->b_flags |= B_ERROR; 363 bp->b_resid = bp->b_bcount; 364 biodone(bp); 365 } 366 367 bufq_free(&sd->buf_queue); 368 369 /* Kill off any pending commands. */ 370 scsipi_kill_pending(sd->sc_periph); 371 372 splx(s); 373 374 /* Nuke the vnodes for any open instances */ 375 for (i = 0; i < MAXPARTITIONS; i++) { 376 mn = SDMINOR(self->dv_unit, i); 377 vdevgone(bmaj, mn, mn, VBLK); 378 vdevgone(cmaj, mn, mn, VCHR); 379 } 380 381 /* Detach from the disk list. */ 382 disk_detach(&sd->sc_dk); 383 384 /* Get rid of the shutdown hook. */ 385 shutdownhook_disestablish(sd->sc_sdhook); 386 387 #if NRND > 0 388 /* Unhook the entropy source. */ 389 rnd_detach_source(&sd->rnd_source); 390 #endif 391 392 return (0); 393 } 394 395 /* 396 * Wait interruptibly for an exclusive lock. 397 * 398 * XXX 399 * Several drivers do this; it should be abstracted and made MP-safe. 400 */ 401 static int 402 sdlock(struct sd_softc *sd) 403 { 404 int error; 405 406 while ((sd->flags & SDF_LOCKED) != 0) { 407 sd->flags |= SDF_WANTED; 408 if ((error = tsleep(sd, PRIBIO | PCATCH, "sdlck", 0)) != 0) 409 return (error); 410 } 411 sd->flags |= SDF_LOCKED; 412 return (0); 413 } 414 415 /* 416 * Unlock and wake up any waiters. 417 */ 418 static void 419 sdunlock(struct sd_softc *sd) 420 { 421 422 sd->flags &= ~SDF_LOCKED; 423 if ((sd->flags & SDF_WANTED) != 0) { 424 sd->flags &= ~SDF_WANTED; 425 wakeup(sd); 426 } 427 } 428 429 /* 430 * open the device. Make sure the partition info is a up-to-date as can be. 431 */ 432 static int 433 sdopen(dev_t dev, int flag, int fmt, struct proc *p) 434 { 435 struct sd_softc *sd; 436 struct scsipi_periph *periph; 437 struct scsipi_adapter *adapt; 438 int unit, part; 439 int error; 440 441 unit = SDUNIT(dev); 442 if (unit >= sd_cd.cd_ndevs) 443 return (ENXIO); 444 sd = sd_cd.cd_devs[unit]; 445 if (sd == NULL) 446 return (ENXIO); 447 448 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 449 return (ENODEV); 450 451 periph = sd->sc_periph; 452 adapt = periph->periph_channel->chan_adapter; 453 part = SDPART(dev); 454 455 SC_DEBUG(periph, SCSIPI_DB1, 456 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 457 sd_cd.cd_ndevs, part)); 458 459 /* 460 * If this is the first open of this device, add a reference 461 * to the adapter. 462 */ 463 if (sd->sc_dk.dk_openmask == 0 && 464 (error = scsipi_adapter_addref(adapt)) != 0) 465 return (error); 466 467 if ((error = sdlock(sd)) != 0) 468 goto bad4; 469 470 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 471 /* 472 * If any partition is open, but the disk has been invalidated, 473 * disallow further opens of non-raw partition 474 */ 475 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 476 (part != RAW_PART || fmt != S_IFCHR)) { 477 error = EIO; 478 goto bad3; 479 } 480 } else { 481 int silent; 482 483 if (part == RAW_PART && fmt == S_IFCHR) 484 silent = XS_CTL_SILENT; 485 else 486 silent = 0; 487 488 /* Check that it is still responding and ok. */ 489 error = scsipi_test_unit_ready(periph, 490 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 491 silent); 492 493 /* 494 * Start the pack spinning if necessary. Always allow the 495 * raw parition to be opened, for raw IOCTLs. Data transfers 496 * will check for SDEV_MEDIA_LOADED. 497 */ 498 if (error == EIO) { 499 int error2; 500 501 error2 = scsipi_start(periph, SSS_START, silent); 502 switch (error2) { 503 case 0: 504 error = 0; 505 break; 506 case EIO: 507 case EINVAL: 508 break; 509 default: 510 error = error2; 511 break; 512 } 513 } 514 if (error) { 515 if (silent) 516 goto out; 517 goto bad3; 518 } 519 520 periph->periph_flags |= PERIPH_OPEN; 521 522 if (periph->periph_flags & PERIPH_REMOVABLE) { 523 /* Lock the pack in. */ 524 error = scsipi_prevent(periph, PR_PREVENT, 525 XS_CTL_IGNORE_ILLEGAL_REQUEST | 526 XS_CTL_IGNORE_MEDIA_CHANGE); 527 if (error) 528 goto bad; 529 } 530 531 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 532 int param_error; 533 periph->periph_flags |= PERIPH_MEDIA_LOADED; 534 535 /* 536 * Load the physical device parameters. 537 * 538 * Note that if media is present but unformatted, 539 * we allow the open (so that it can be formatted!). 540 * The drive should refuse real I/O, if the media is 541 * unformatted. 542 */ 543 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 544 == SDGP_RESULT_OFFLINE) { 545 error = ENXIO; 546 goto bad2; 547 } 548 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 549 550 /* Load the partition info if not already loaded. */ 551 if (param_error == 0) { 552 sdgetdisklabel(sd); 553 SC_DEBUG(periph, SCSIPI_DB3, 554 ("Disklabel loaded ")); 555 } 556 } 557 } 558 559 /* Check that the partition exists. */ 560 if (part != RAW_PART && 561 (part >= sd->sc_dk.dk_label->d_npartitions || 562 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 563 error = ENXIO; 564 goto bad; 565 } 566 567 out: /* Insure only one open at a time. */ 568 switch (fmt) { 569 case S_IFCHR: 570 sd->sc_dk.dk_copenmask |= (1 << part); 571 break; 572 case S_IFBLK: 573 sd->sc_dk.dk_bopenmask |= (1 << part); 574 break; 575 } 576 sd->sc_dk.dk_openmask = 577 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 578 579 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 580 sdunlock(sd); 581 return (0); 582 583 bad2: 584 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 585 586 bad: 587 if (sd->sc_dk.dk_openmask == 0) { 588 if (periph->periph_flags & PERIPH_REMOVABLE) 589 scsipi_prevent(periph, PR_ALLOW, 590 XS_CTL_IGNORE_ILLEGAL_REQUEST | 591 XS_CTL_IGNORE_MEDIA_CHANGE); 592 periph->periph_flags &= ~PERIPH_OPEN; 593 } 594 595 bad3: 596 sdunlock(sd); 597 bad4: 598 if (sd->sc_dk.dk_openmask == 0) 599 scsipi_adapter_delref(adapt); 600 return (error); 601 } 602 603 /* 604 * close the device.. only called if we are the LAST occurence of an open 605 * device. Convenient now but usually a pain. 606 */ 607 static int 608 sdclose(dev_t dev, int flag, int fmt, struct proc *p) 609 { 610 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 611 struct scsipi_periph *periph = sd->sc_periph; 612 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 613 int part = SDPART(dev); 614 int error; 615 616 if ((error = sdlock(sd)) != 0) 617 return (error); 618 619 switch (fmt) { 620 case S_IFCHR: 621 sd->sc_dk.dk_copenmask &= ~(1 << part); 622 break; 623 case S_IFBLK: 624 sd->sc_dk.dk_bopenmask &= ~(1 << part); 625 break; 626 } 627 sd->sc_dk.dk_openmask = 628 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 629 630 if (sd->sc_dk.dk_openmask == 0) { 631 /* 632 * If the disk cache needs flushing, and the disk supports 633 * it, do it now. 634 */ 635 if ((sd->flags & SDF_DIRTY) != 0) { 636 if (sd_flush(sd, 0)) { 637 printf("%s: cache synchronization failed\n", 638 sd->sc_dev.dv_xname); 639 sd->flags &= ~SDF_FLUSHING; 640 } else 641 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 642 } 643 644 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 645 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 646 647 scsipi_wait_drain(periph); 648 649 if (periph->periph_flags & PERIPH_REMOVABLE) 650 scsipi_prevent(periph, PR_ALLOW, 651 XS_CTL_IGNORE_ILLEGAL_REQUEST | 652 XS_CTL_IGNORE_NOT_READY); 653 periph->periph_flags &= ~PERIPH_OPEN; 654 655 scsipi_wait_drain(periph); 656 657 scsipi_adapter_delref(adapt); 658 } 659 660 sdunlock(sd); 661 return (0); 662 } 663 664 /* 665 * Actually translate the requested transfer into one the physical driver 666 * can understand. The transfer is described by a buf and will include 667 * only one physical transfer. 668 */ 669 static void 670 sdstrategy(struct buf *bp) 671 { 672 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 673 struct scsipi_periph *periph = sd->sc_periph; 674 struct disklabel *lp; 675 daddr_t blkno; 676 int s; 677 boolean_t sector_aligned; 678 679 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 680 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 681 ("%ld bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 682 /* 683 * If the device has been made invalid, error out 684 */ 685 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 686 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 687 if (periph->periph_flags & PERIPH_OPEN) 688 bp->b_error = EIO; 689 else 690 bp->b_error = ENODEV; 691 goto bad; 692 } 693 694 lp = sd->sc_dk.dk_label; 695 696 /* 697 * The transfer must be a whole number of blocks, offset must not be 698 * negative. 699 */ 700 if (lp->d_secsize == DEV_BSIZE) { 701 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 702 } else { 703 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 704 } 705 if (!sector_aligned || bp->b_blkno < 0) { 706 bp->b_error = EINVAL; 707 goto bad; 708 } 709 /* 710 * If it's a null transfer, return immediatly 711 */ 712 if (bp->b_bcount == 0) 713 goto done; 714 715 /* 716 * Do bounds checking, adjust transfer. if error, process. 717 * If end of partition, just return. 718 */ 719 if (SDPART(bp->b_dev) == RAW_PART) { 720 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 721 sd->params.disksize512) <= 0) 722 goto done; 723 } else { 724 if (bounds_check_with_label(&sd->sc_dk, bp, 725 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 726 goto done; 727 } 728 729 /* 730 * Now convert the block number to absolute and put it in 731 * terms of the device's logical block size. 732 */ 733 if (lp->d_secsize == DEV_BSIZE) 734 blkno = bp->b_blkno; 735 else if (lp->d_secsize > DEV_BSIZE) 736 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 737 else 738 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 739 740 if (SDPART(bp->b_dev) != RAW_PART) 741 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 742 743 bp->b_rawblkno = blkno; 744 745 s = splbio(); 746 747 /* 748 * Place it in the queue of disk activities for this disk. 749 * 750 * XXX Only do disksort() if the current operating mode does not 751 * XXX include tagged queueing. 752 */ 753 BUFQ_PUT(&sd->buf_queue, bp); 754 755 /* 756 * Tell the device to get going on the transfer if it's 757 * not doing anything, otherwise just wait for completion 758 */ 759 sdstart(sd->sc_periph); 760 761 splx(s); 762 return; 763 764 bad: 765 bp->b_flags |= B_ERROR; 766 done: 767 /* 768 * Correctly set the buf to indicate a completed xfer 769 */ 770 bp->b_resid = bp->b_bcount; 771 biodone(bp); 772 } 773 774 /* 775 * sdstart looks to see if there is a buf waiting for the device 776 * and that the device is not already busy. If both are true, 777 * It dequeues the buf and creates a scsi command to perform the 778 * transfer in the buf. The transfer request will call scsipi_done 779 * on completion, which will in turn call this routine again 780 * so that the next queued transfer is performed. 781 * The bufs are queued by the strategy routine (sdstrategy) 782 * 783 * This routine is also called after other non-queued requests 784 * have been made of the scsi driver, to ensure that the queue 785 * continues to be drained. 786 * 787 * must be called at the correct (highish) spl level 788 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 789 */ 790 static void 791 sdstart(struct scsipi_periph *periph) 792 { 793 struct sd_softc *sd = (void *)periph->periph_dev; 794 struct disklabel *lp = sd->sc_dk.dk_label; 795 struct buf *bp = 0; 796 struct scsipi_rw_big cmd_big; 797 struct scsi_rw cmd_small; 798 struct scsipi_generic *cmdp; 799 struct scsipi_xfer *xs; 800 int nblks, cmdlen, error, flags; 801 802 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 803 /* 804 * Check if the device has room for another command 805 */ 806 while (periph->periph_active < periph->periph_openings) { 807 /* 808 * there is excess capacity, but a special waits 809 * It'll need the adapter as soon as we clear out of the 810 * way and let it run (user level wait). 811 */ 812 if (periph->periph_flags & PERIPH_WAITING) { 813 periph->periph_flags &= ~PERIPH_WAITING; 814 wakeup((caddr_t)periph); 815 return; 816 } 817 818 /* 819 * If the device has become invalid, abort all the 820 * reads and writes until all files have been closed and 821 * re-opened 822 */ 823 if (__predict_false( 824 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 825 if ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 826 bp->b_error = EIO; 827 bp->b_flags |= B_ERROR; 828 bp->b_resid = bp->b_bcount; 829 biodone(bp); 830 continue; 831 } else { 832 return; 833 } 834 } 835 836 /* 837 * See if there is a buf with work for us to do.. 838 */ 839 if ((bp = BUFQ_PEEK(&sd->buf_queue)) == NULL) 840 return; 841 842 /* 843 * We have a buf, now we should make a command. 844 */ 845 846 if (lp->d_secsize == DEV_BSIZE) 847 nblks = bp->b_bcount >> DEV_BSHIFT; 848 else 849 nblks = howmany(bp->b_bcount, lp->d_secsize); 850 851 /* 852 * Fill out the scsi command. If the transfer will 853 * fit in a "small" cdb, use it. 854 */ 855 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 856 ((nblks & 0xff) == nblks) && 857 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 858 /* 859 * We can fit in a small cdb. 860 */ 861 memset(&cmd_small, 0, sizeof(cmd_small)); 862 cmd_small.opcode = (bp->b_flags & B_READ) ? 863 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 864 _lto3b(bp->b_rawblkno, cmd_small.addr); 865 cmd_small.length = nblks & 0xff; 866 cmdlen = sizeof(cmd_small); 867 cmdp = (struct scsipi_generic *)&cmd_small; 868 } else { 869 /* 870 * Need a large cdb. 871 */ 872 memset(&cmd_big, 0, sizeof(cmd_big)); 873 cmd_big.opcode = (bp->b_flags & B_READ) ? 874 READ_BIG : WRITE_BIG; 875 _lto4b(bp->b_rawblkno, cmd_big.addr); 876 _lto2b(nblks, cmd_big.length); 877 cmdlen = sizeof(cmd_big); 878 cmdp = (struct scsipi_generic *)&cmd_big; 879 } 880 881 /* Instrumentation. */ 882 disk_busy(&sd->sc_dk); 883 884 /* 885 * Mark the disk dirty so that the cache will be 886 * flushed on close. 887 */ 888 if ((bp->b_flags & B_READ) == 0) 889 sd->flags |= SDF_DIRTY; 890 891 /* 892 * Figure out what flags to use. 893 */ 894 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 895 if (bp->b_flags & B_READ) 896 flags |= XS_CTL_DATA_IN; 897 else 898 flags |= XS_CTL_DATA_OUT; 899 900 /* 901 * Call the routine that chats with the adapter. 902 * Note: we cannot sleep as we may be an interrupt 903 */ 904 xs = scsipi_make_xs(periph, cmdp, cmdlen, 905 (u_char *)bp->b_data, bp->b_bcount, 906 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 907 if (__predict_false(xs == NULL)) { 908 /* 909 * out of memory. Keep this buffer in the queue, and 910 * retry later. 911 */ 912 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 913 periph); 914 return; 915 } 916 /* 917 * need to dequeue the buffer before queuing the command, 918 * because cdstart may be called recursively from the 919 * HBA driver 920 */ 921 #ifdef DIAGNOSTIC 922 if (BUFQ_GET(&sd->buf_queue) != bp) 923 panic("sdstart(): dequeued wrong buf"); 924 #else 925 BUFQ_GET(&sd->buf_queue); 926 #endif 927 error = scsipi_command(periph, xs, cmdp, cmdlen, 928 (u_char *)bp->b_data, bp->b_bcount, 929 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 930 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 931 KASSERT(error == 0); 932 } 933 } 934 935 static void 936 sdrestart(void *v) 937 { 938 int s = splbio(); 939 sdstart((struct scsipi_periph *)v); 940 splx(s); 941 } 942 943 static void 944 sddone(struct scsipi_xfer *xs) 945 { 946 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 947 948 if (sd->flags & SDF_FLUSHING) { 949 /* Flush completed, no longer dirty. */ 950 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 951 } 952 953 if (xs->bp != NULL) { 954 disk_unbusy(&sd->sc_dk, xs->bp->b_bcount - xs->bp->b_resid, 955 (xs->bp->b_flags & B_READ)); 956 #if NRND > 0 957 rnd_add_uint32(&sd->rnd_source, xs->bp->b_rawblkno); 958 #endif 959 } 960 } 961 962 static void 963 sdminphys(struct buf *bp) 964 { 965 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 966 long max; 967 968 /* 969 * If the device is ancient, we want to make sure that 970 * the transfer fits into a 6-byte cdb. 971 * 972 * XXX Note that the SCSI-I spec says that 256-block transfers 973 * are allowed in a 6-byte read/write, and are specified 974 * by settng the "length" to 0. However, we're conservative 975 * here, allowing only 255-block transfers in case an 976 * ancient device gets confused by length == 0. A length of 0 977 * in a 10-byte read/write actually means 0 blocks. 978 */ 979 if ((sd->flags & SDF_ANCIENT) && 980 ((sd->sc_periph->periph_flags & 981 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 982 max = sd->sc_dk.dk_label->d_secsize * 0xff; 983 984 if (bp->b_bcount > max) 985 bp->b_bcount = max; 986 } 987 988 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 989 } 990 991 static int 992 sdread(dev_t dev, struct uio *uio, int ioflag) 993 { 994 995 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 996 } 997 998 static int 999 sdwrite(dev_t dev, struct uio *uio, int ioflag) 1000 { 1001 1002 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1003 } 1004 1005 /* 1006 * Perform special action on behalf of the user 1007 * Knows about the internals of this device 1008 */ 1009 static int 1010 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 1011 { 1012 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1013 struct scsipi_periph *periph = sd->sc_periph; 1014 int part = SDPART(dev); 1015 int error = 0; 1016 #ifdef __HAVE_OLD_DISKLABEL 1017 struct disklabel *newlabel = NULL; 1018 #endif 1019 1020 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1021 1022 /* 1023 * If the device is not valid, some IOCTLs can still be 1024 * handled on the raw partition. Check this here. 1025 */ 1026 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1027 switch (cmd) { 1028 case DIOCKLABEL: 1029 case DIOCWLABEL: 1030 case DIOCLOCK: 1031 case DIOCEJECT: 1032 case ODIOCEJECT: 1033 case DIOCGCACHE: 1034 case DIOCSCACHE: 1035 case SCIOCIDENTIFY: 1036 case OSCIOCIDENTIFY: 1037 case SCIOCCOMMAND: 1038 case SCIOCDEBUG: 1039 if (part == RAW_PART) 1040 break; 1041 /* FALLTHROUGH */ 1042 default: 1043 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1044 return (ENODEV); 1045 else 1046 return (EIO); 1047 } 1048 } 1049 1050 switch (cmd) { 1051 case DIOCGDINFO: 1052 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1053 return (0); 1054 1055 #ifdef __HAVE_OLD_DISKLABEL 1056 case ODIOCGDINFO: 1057 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1058 if (newlabel == NULL) 1059 return EIO; 1060 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1061 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1062 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1063 else 1064 error = ENOTTY; 1065 free(newlabel, M_TEMP); 1066 return error; 1067 #endif 1068 1069 case DIOCGPART: 1070 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1071 ((struct partinfo *)addr)->part = 1072 &sd->sc_dk.dk_label->d_partitions[part]; 1073 return (0); 1074 1075 case DIOCWDINFO: 1076 case DIOCSDINFO: 1077 #ifdef __HAVE_OLD_DISKLABEL 1078 case ODIOCWDINFO: 1079 case ODIOCSDINFO: 1080 #endif 1081 { 1082 struct disklabel *lp; 1083 1084 if ((flag & FWRITE) == 0) 1085 return (EBADF); 1086 1087 #ifdef __HAVE_OLD_DISKLABEL 1088 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1089 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1090 if (newlabel == NULL) 1091 return EIO; 1092 memset(newlabel, 0, sizeof newlabel); 1093 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1094 lp = newlabel; 1095 } else 1096 #endif 1097 lp = (struct disklabel *)addr; 1098 1099 if ((error = sdlock(sd)) != 0) 1100 goto bad; 1101 sd->flags |= SDF_LABELLING; 1102 1103 error = setdisklabel(sd->sc_dk.dk_label, 1104 lp, /*sd->sc_dk.dk_openmask : */0, 1105 sd->sc_dk.dk_cpulabel); 1106 if (error == 0) { 1107 if (cmd == DIOCWDINFO 1108 #ifdef __HAVE_OLD_DISKLABEL 1109 || cmd == ODIOCWDINFO 1110 #endif 1111 ) 1112 error = writedisklabel(SDLABELDEV(dev), 1113 sdstrategy, sd->sc_dk.dk_label, 1114 sd->sc_dk.dk_cpulabel); 1115 } 1116 1117 sd->flags &= ~SDF_LABELLING; 1118 sdunlock(sd); 1119 bad: 1120 #ifdef __HAVE_OLD_DISKLABEL 1121 if (newlabel != NULL) 1122 free(newlabel, M_TEMP); 1123 #endif 1124 return (error); 1125 } 1126 1127 case DIOCKLABEL: 1128 if (*(int *)addr) 1129 periph->periph_flags |= PERIPH_KEEP_LABEL; 1130 else 1131 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1132 return (0); 1133 1134 case DIOCWLABEL: 1135 if ((flag & FWRITE) == 0) 1136 return (EBADF); 1137 if (*(int *)addr) 1138 sd->flags |= SDF_WLABEL; 1139 else 1140 sd->flags &= ~SDF_WLABEL; 1141 return (0); 1142 1143 case DIOCLOCK: 1144 return (scsipi_prevent(periph, 1145 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1146 1147 case DIOCEJECT: 1148 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1149 return (ENOTTY); 1150 if (*(int *)addr == 0) { 1151 /* 1152 * Don't force eject: check that we are the only 1153 * partition open. If so, unlock it. 1154 */ 1155 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1156 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1157 sd->sc_dk.dk_openmask) { 1158 error = scsipi_prevent(periph, PR_ALLOW, 1159 XS_CTL_IGNORE_NOT_READY); 1160 if (error) 1161 return (error); 1162 } else { 1163 return (EBUSY); 1164 } 1165 } 1166 /* FALLTHROUGH */ 1167 case ODIOCEJECT: 1168 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1169 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1170 1171 case DIOCGDEFLABEL: 1172 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1173 return (0); 1174 1175 #ifdef __HAVE_OLD_DISKLABEL 1176 case ODIOCGDEFLABEL: 1177 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1178 if (newlabel == NULL) 1179 return EIO; 1180 sdgetdefaultlabel(sd, newlabel); 1181 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1182 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1183 else 1184 error = ENOTTY; 1185 free(newlabel, M_TEMP); 1186 return error; 1187 #endif 1188 1189 case DIOCGCACHE: 1190 return (sd_getcache(sd, (int *) addr)); 1191 1192 case DIOCSCACHE: 1193 if ((flag & FWRITE) == 0) 1194 return (EBADF); 1195 return (sd_setcache(sd, *(int *) addr)); 1196 1197 case DIOCCACHESYNC: 1198 /* 1199 * XXX Do we really need to care about having a writable 1200 * file descriptor here? 1201 */ 1202 if ((flag & FWRITE) == 0) 1203 return (EBADF); 1204 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1205 error = sd_flush(sd, 0); 1206 if (error) 1207 sd->flags &= ~SDF_FLUSHING; 1208 else 1209 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1210 } else 1211 error = 0; 1212 return (error); 1213 1214 default: 1215 if (part != RAW_PART) 1216 return (ENOTTY); 1217 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1218 } 1219 1220 #ifdef DIAGNOSTIC 1221 panic("sdioctl: impossible"); 1222 #endif 1223 } 1224 1225 static void 1226 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1227 { 1228 1229 memset(lp, 0, sizeof(struct disklabel)); 1230 1231 lp->d_secsize = sd->params.blksize; 1232 lp->d_ntracks = sd->params.heads; 1233 lp->d_nsectors = sd->params.sectors; 1234 lp->d_ncylinders = sd->params.cyls; 1235 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1236 1237 switch (scsipi_periph_bustype(sd->sc_periph)) { 1238 case SCSIPI_BUSTYPE_SCSI: 1239 lp->d_type = DTYPE_SCSI; 1240 break; 1241 case SCSIPI_BUSTYPE_ATAPI: 1242 lp->d_type = DTYPE_ATAPI; 1243 break; 1244 } 1245 /* 1246 * XXX 1247 * We could probe the mode pages to figure out what kind of disc it is. 1248 * Is this worthwhile? 1249 */ 1250 strncpy(lp->d_typename, "mydisk", 16); 1251 strncpy(lp->d_packname, "fictitious", 16); 1252 lp->d_secperunit = sd->params.disksize; 1253 lp->d_rpm = sd->params.rot_rate; 1254 lp->d_interleave = 1; 1255 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1256 D_REMOVABLE : 0; 1257 1258 lp->d_partitions[RAW_PART].p_offset = 0; 1259 lp->d_partitions[RAW_PART].p_size = 1260 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1261 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1262 lp->d_npartitions = RAW_PART + 1; 1263 1264 lp->d_magic = DISKMAGIC; 1265 lp->d_magic2 = DISKMAGIC; 1266 lp->d_checksum = dkcksum(lp); 1267 } 1268 1269 1270 /* 1271 * Load the label information on the named device 1272 */ 1273 static void 1274 sdgetdisklabel(struct sd_softc *sd) 1275 { 1276 struct disklabel *lp = sd->sc_dk.dk_label; 1277 const char *errstring; 1278 1279 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1280 1281 sdgetdefaultlabel(sd, lp); 1282 1283 if (lp->d_secpercyl == 0) { 1284 lp->d_secpercyl = 100; 1285 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1286 } 1287 1288 /* 1289 * Call the generic disklabel extraction routine 1290 */ 1291 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1292 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1293 if (errstring) { 1294 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1295 return; 1296 } 1297 } 1298 1299 static void 1300 sd_shutdown(void *arg) 1301 { 1302 struct sd_softc *sd = arg; 1303 1304 /* 1305 * If the disk cache needs to be flushed, and the disk supports 1306 * it, flush it. We're cold at this point, so we poll for 1307 * completion. 1308 */ 1309 if ((sd->flags & SDF_DIRTY) != 0) { 1310 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1311 printf("%s: cache synchronization failed\n", 1312 sd->sc_dev.dv_xname); 1313 sd->flags &= ~SDF_FLUSHING; 1314 } else 1315 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1316 } 1317 } 1318 1319 /* 1320 * Check Errors 1321 */ 1322 static int 1323 sd_interpret_sense(struct scsipi_xfer *xs) 1324 { 1325 struct scsipi_periph *periph = xs->xs_periph; 1326 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1327 struct sd_softc *sd = (void *)periph->periph_dev; 1328 int s, error, retval = EJUSTRETURN; 1329 1330 /* 1331 * If the periph is already recovering, just do the normal 1332 * error processing. 1333 */ 1334 if (periph->periph_flags & PERIPH_RECOVERING) 1335 return (retval); 1336 1337 /* 1338 * If the device is not open yet, let the generic code handle it. 1339 */ 1340 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1341 return (retval); 1342 1343 /* 1344 * If it isn't a extended or extended/deferred error, let 1345 * the generic code handle it. 1346 */ 1347 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1348 (sense->error_code & SSD_ERRCODE) != 0x71) 1349 return (retval); 1350 1351 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1352 sense->add_sense_code == 0x4) { 1353 if (sense->add_sense_code_qual == 0x01) { 1354 /* 1355 * Unit In The Process Of Becoming Ready. 1356 */ 1357 printf("%s: waiting for pack to spin up...\n", 1358 sd->sc_dev.dv_xname); 1359 if (!callout_pending(&periph->periph_callout)) 1360 scsipi_periph_freeze(periph, 1); 1361 callout_reset(&periph->periph_callout, 1362 5 * hz, scsipi_periph_timed_thaw, periph); 1363 retval = ERESTART; 1364 } else if (sense->add_sense_code_qual == 0x02) { 1365 printf("%s: pack is stopped, restarting...\n", 1366 sd->sc_dev.dv_xname); 1367 s = splbio(); 1368 periph->periph_flags |= PERIPH_RECOVERING; 1369 splx(s); 1370 error = scsipi_start(periph, SSS_START, 1371 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1372 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1373 if (error) { 1374 printf("%s: unable to restart pack\n", 1375 sd->sc_dev.dv_xname); 1376 retval = error; 1377 } else 1378 retval = ERESTART; 1379 s = splbio(); 1380 periph->periph_flags &= ~PERIPH_RECOVERING; 1381 splx(s); 1382 } 1383 } 1384 if ((sense->flags & SSD_KEY) == SKEY_MEDIUM_ERROR && 1385 sense->add_sense_code == 0x31 && 1386 sense->add_sense_code_qual == 0x00) { /* maybe for any asq ? */ 1387 /* Medium Format Corrupted */ 1388 retval = EFTYPE; 1389 } 1390 return (retval); 1391 } 1392 1393 1394 static int 1395 sdsize(dev_t dev) 1396 { 1397 struct sd_softc *sd; 1398 int part, unit, omask; 1399 int size; 1400 1401 unit = SDUNIT(dev); 1402 if (unit >= sd_cd.cd_ndevs) 1403 return (-1); 1404 sd = sd_cd.cd_devs[unit]; 1405 if (sd == NULL) 1406 return (-1); 1407 1408 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1409 return (-1); 1410 1411 part = SDPART(dev); 1412 omask = sd->sc_dk.dk_openmask & (1 << part); 1413 1414 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1415 return (-1); 1416 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1417 size = -1; 1418 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1419 size = -1; 1420 else 1421 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1422 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1423 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1424 return (-1); 1425 return (size); 1426 } 1427 1428 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1429 static struct scsipi_xfer sx; 1430 static int sddoingadump; 1431 1432 /* 1433 * dump all of physical memory into the partition specified, starting 1434 * at offset 'dumplo' into the partition. 1435 */ 1436 static int 1437 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1438 { 1439 struct sd_softc *sd; /* disk unit to do the I/O */ 1440 struct disklabel *lp; /* disk's disklabel */ 1441 int unit, part; 1442 int sectorsize; /* size of a disk sector */ 1443 int nsects; /* number of sectors in partition */ 1444 int sectoff; /* sector offset of partition */ 1445 int totwrt; /* total number of sectors left to write */ 1446 int nwrt; /* current number of sectors to write */ 1447 struct scsipi_rw_big cmd; /* write command */ 1448 struct scsipi_xfer *xs; /* ... convenience */ 1449 struct scsipi_periph *periph; 1450 struct scsipi_channel *chan; 1451 1452 /* Check if recursive dump; if so, punt. */ 1453 if (sddoingadump) 1454 return (EFAULT); 1455 1456 /* Mark as active early. */ 1457 sddoingadump = 1; 1458 1459 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1460 part = SDPART(dev); 1461 1462 /* Check for acceptable drive number. */ 1463 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1464 return (ENXIO); 1465 1466 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1467 return (ENODEV); 1468 1469 periph = sd->sc_periph; 1470 chan = periph->periph_channel; 1471 1472 /* Make sure it was initialized. */ 1473 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1474 return (ENXIO); 1475 1476 /* Convert to disk sectors. Request must be a multiple of size. */ 1477 lp = sd->sc_dk.dk_label; 1478 sectorsize = lp->d_secsize; 1479 if ((size % sectorsize) != 0) 1480 return (EFAULT); 1481 totwrt = size / sectorsize; 1482 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1483 1484 nsects = lp->d_partitions[part].p_size; 1485 sectoff = lp->d_partitions[part].p_offset; 1486 1487 /* Check transfer bounds against partition size. */ 1488 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1489 return (EINVAL); 1490 1491 /* Offset block number to start of partition. */ 1492 blkno += sectoff; 1493 1494 xs = &sx; 1495 1496 while (totwrt > 0) { 1497 nwrt = totwrt; /* XXX */ 1498 #ifndef SD_DUMP_NOT_TRUSTED 1499 /* 1500 * Fill out the scsi command 1501 */ 1502 memset(&cmd, 0, sizeof(cmd)); 1503 cmd.opcode = WRITE_BIG; 1504 _lto4b(blkno, cmd.addr); 1505 _lto2b(nwrt, cmd.length); 1506 /* 1507 * Fill out the scsipi_xfer structure 1508 * Note: we cannot sleep as we may be an interrupt 1509 * don't use scsipi_command() as it may want to wait 1510 * for an xs. 1511 */ 1512 memset(xs, 0, sizeof(sx)); 1513 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1514 XS_CTL_DATA_OUT; 1515 xs->xs_status = 0; 1516 xs->xs_periph = periph; 1517 xs->xs_retries = SDRETRIES; 1518 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1519 xs->cmd = (struct scsipi_generic *)&cmd; 1520 xs->cmdlen = sizeof(cmd); 1521 xs->resid = nwrt * sectorsize; 1522 xs->error = XS_NOERROR; 1523 xs->bp = 0; 1524 xs->data = va; 1525 xs->datalen = nwrt * sectorsize; 1526 1527 /* 1528 * Pass all this info to the scsi driver. 1529 */ 1530 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1531 if ((xs->xs_status & XS_STS_DONE) == 0 || 1532 xs->error != XS_NOERROR) 1533 return (EIO); 1534 #else /* SD_DUMP_NOT_TRUSTED */ 1535 /* Let's just talk about this first... */ 1536 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1537 delay(500 * 1000); /* half a second */ 1538 #endif /* SD_DUMP_NOT_TRUSTED */ 1539 1540 /* update block count */ 1541 totwrt -= nwrt; 1542 blkno += nwrt; 1543 va += sectorsize * nwrt; 1544 } 1545 sddoingadump = 0; 1546 return (0); 1547 } 1548 1549 static int 1550 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1551 int page, int flags, int *big) 1552 { 1553 1554 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1555 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1556 *big = 1; 1557 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1558 size + sizeof(struct scsipi_mode_header_big), 1559 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1560 } else { 1561 *big = 0; 1562 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1563 size + sizeof(struct scsipi_mode_header), 1564 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1565 } 1566 } 1567 1568 static int 1569 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1570 int flags, int big) 1571 { 1572 1573 if (big) { 1574 struct scsipi_mode_header_big *header = sense; 1575 1576 _lto2b(0, header->data_length); 1577 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1578 size + sizeof(struct scsipi_mode_header_big), 1579 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1580 } else { 1581 struct scsipi_mode_header *header = sense; 1582 1583 header->data_length = 0; 1584 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1585 size + sizeof(struct scsipi_mode_header), 1586 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1587 } 1588 } 1589 1590 static int 1591 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1592 { 1593 struct { 1594 struct scsipi_mode_header header; 1595 /* no block descriptor */ 1596 u_int8_t pg_code; /* page code (should be 6) */ 1597 u_int8_t pg_length; /* page length (should be 11) */ 1598 u_int8_t wcd; /* bit0: cache disable */ 1599 u_int8_t lbs[2]; /* logical block size */ 1600 u_int8_t size[5]; /* number of log. blocks */ 1601 u_int8_t pp; /* power/performance */ 1602 u_int8_t flags; 1603 u_int8_t resvd; 1604 } scsipi_sense; 1605 u_int64_t sectors; 1606 int error; 1607 1608 /* 1609 * scsipi_size (ie "read capacity") and mode sense page 6 1610 * give the same information. Do both for now, and check 1611 * for consistency. 1612 * XXX probably differs for removable media 1613 */ 1614 dp->blksize = 512; 1615 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1616 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1617 1618 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1619 &scsipi_sense.header, sizeof(scsipi_sense), 1620 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1621 1622 if (error != 0) 1623 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1624 1625 dp->blksize = _2btol(scsipi_sense.lbs); 1626 if (dp->blksize == 0) 1627 dp->blksize = 512; 1628 1629 /* 1630 * Create a pseudo-geometry. 1631 */ 1632 dp->heads = 64; 1633 dp->sectors = 32; 1634 dp->cyls = sectors / (dp->heads * dp->sectors); 1635 dp->disksize = _5btol(scsipi_sense.size); 1636 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1637 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1638 (unsigned long long)dp->disksize, 1639 (unsigned long long)sectors); 1640 dp->disksize = sectors; 1641 } 1642 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1643 1644 return (SDGP_RESULT_OK); 1645 } 1646 1647 /* 1648 * Get the scsi driver to send a full inquiry to the * device and use the 1649 * results to fill out the disk parameter structure. 1650 */ 1651 static int 1652 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1653 { 1654 u_int64_t sectors; 1655 int error; 1656 #if 0 1657 int i; 1658 u_int8_t *p; 1659 #endif 1660 1661 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1662 if (sectors == 0) { 1663 struct scsipi_read_format_capacities cmd; 1664 struct { 1665 struct scsipi_capacity_list_header header; 1666 struct scsipi_capacity_descriptor desc; 1667 } __attribute__((packed)) data; 1668 1669 memset(&cmd, 0, sizeof(cmd)); 1670 memset(&data, 0, sizeof(data)); 1671 cmd.opcode = READ_FORMAT_CAPACITIES; 1672 _lto2b(sizeof(data), cmd.length); 1673 1674 error = scsipi_command(sd->sc_periph, NULL, 1675 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1676 SDRETRIES, 20000, NULL, 1677 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1678 if (error == EFTYPE) { 1679 /* Medium Format Corrupted, handle as not formatted */ 1680 return (SDGP_RESULT_UNFORMATTED); 1681 } 1682 if (error || data.header.length == 0) 1683 return (SDGP_RESULT_OFFLINE); 1684 1685 #if 0 1686 printf("rfc: length=%d\n", data.header.length); 1687 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"); 1688 #endif 1689 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1690 case SCSIPI_CAP_DESC_CODE_RESERVED: 1691 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1692 break; 1693 1694 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1695 return (SDGP_RESULT_UNFORMATTED); 1696 1697 case SCSIPI_CAP_DESC_CODE_NONE: 1698 return (SDGP_RESULT_OFFLINE); 1699 } 1700 1701 dp->disksize = sectors = _4btol(data.desc.nblks); 1702 if (sectors == 0) 1703 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1704 1705 dp->blksize = _3btol(data.desc.blklen); 1706 if (dp->blksize == 0) 1707 dp->blksize = 512; 1708 } else { 1709 struct sd_mode_sense_data scsipi_sense; 1710 int big, bsize; 1711 struct scsi_blk_desc *bdesc; 1712 1713 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1714 error = sd_mode_sense(sd, 0, &scsipi_sense, 1715 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1716 dp->blksize = 512; 1717 if (!error) { 1718 if (big) { 1719 bdesc = (void *)(&scsipi_sense.header.big + 1); 1720 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1721 } else { 1722 bdesc = (void *)(&scsipi_sense.header.small + 1); 1723 bsize = scsipi_sense.header.small.blk_desc_len; 1724 } 1725 1726 #if 0 1727 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1728 printf("page 0 bsize=%d\n", bsize); 1729 printf("page 0 ok\n"); 1730 #endif 1731 1732 if (bsize >= 8) { 1733 dp->blksize = _3btol(bdesc->blklen); 1734 if (dp->blksize == 0) 1735 dp->blksize = 512; 1736 } 1737 } 1738 } 1739 1740 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1741 return (0); 1742 } 1743 1744 static int 1745 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1746 { 1747 struct sd_mode_sense_data scsipi_sense; 1748 int error; 1749 int big, poffset, byte2; 1750 union scsi_disk_pages *pages; 1751 #if 0 1752 int i; 1753 u_int8_t *p; 1754 #endif 1755 1756 byte2 = SMS_DBD; 1757 again: 1758 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1759 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1760 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1761 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1762 flags | XS_CTL_SILENT, &big); 1763 if (error) { 1764 if (byte2 == SMS_DBD) { 1765 /* No result; try once more with DBD off */ 1766 byte2 = 0; 1767 goto again; 1768 } 1769 return (error); 1770 } 1771 1772 if (big) { 1773 poffset = sizeof scsipi_sense.header.big; 1774 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1775 } else { 1776 poffset = sizeof scsipi_sense.header.small; 1777 poffset += scsipi_sense.header.small.blk_desc_len; 1778 } 1779 1780 pages = (void *)((u_long)&scsipi_sense + poffset); 1781 #if 0 1782 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1783 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1784 #endif 1785 1786 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1787 return (ERESTART); 1788 1789 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1790 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1791 _3btol(pages->rigid_geometry.ncyl), 1792 pages->rigid_geometry.nheads, 1793 _2btol(pages->rigid_geometry.st_cyl_wp), 1794 _2btol(pages->rigid_geometry.st_cyl_rwc), 1795 _2btol(pages->rigid_geometry.land_zone))); 1796 1797 /* 1798 * KLUDGE!! (for zone recorded disks) 1799 * give a number of sectors so that sec * trks * cyls 1800 * is <= disk_size 1801 * can lead to wasted space! THINK ABOUT THIS ! 1802 */ 1803 dp->heads = pages->rigid_geometry.nheads; 1804 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1805 if (dp->heads == 0 || dp->cyls == 0) 1806 return (ERESTART); 1807 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1808 1809 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1810 if (dp->rot_rate == 0) 1811 dp->rot_rate = 3600; 1812 1813 #if 0 1814 printf("page 4 ok\n"); 1815 #endif 1816 return (0); 1817 } 1818 1819 static int 1820 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1821 { 1822 struct sd_mode_sense_data scsipi_sense; 1823 int error; 1824 int big, poffset, byte2; 1825 union scsi_disk_pages *pages; 1826 #if 0 1827 int i; 1828 u_int8_t *p; 1829 #endif 1830 1831 byte2 = SMS_DBD; 1832 again: 1833 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1834 error = sd_mode_sense(sd, 0, &scsipi_sense, 1835 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1836 sizeof(scsipi_sense.pages.flex_geometry), 5, 1837 flags | XS_CTL_SILENT, &big); 1838 if (error) { 1839 if (byte2 == SMS_DBD) { 1840 /* No result; try once more with DBD off */ 1841 byte2 = 0; 1842 goto again; 1843 } 1844 return (error); 1845 } 1846 1847 if (big) { 1848 poffset = sizeof scsipi_sense.header.big; 1849 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1850 } else { 1851 poffset = sizeof scsipi_sense.header.small; 1852 poffset += scsipi_sense.header.small.blk_desc_len; 1853 } 1854 1855 pages = (void *)((u_long)&scsipi_sense + poffset); 1856 #if 0 1857 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1858 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1859 #endif 1860 1861 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1862 return (ERESTART); 1863 1864 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1865 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1866 _3btol(pages->flex_geometry.ncyl), 1867 pages->flex_geometry.nheads, 1868 pages->flex_geometry.ph_sec_tr, 1869 _2btol(pages->flex_geometry.bytes_s))); 1870 1871 dp->heads = pages->flex_geometry.nheads; 1872 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1873 dp->sectors = pages->flex_geometry.ph_sec_tr; 1874 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1875 return (ERESTART); 1876 1877 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1878 if (dp->rot_rate == 0) 1879 dp->rot_rate = 3600; 1880 1881 #if 0 1882 printf("page 5 ok\n"); 1883 #endif 1884 return (0); 1885 } 1886 1887 static int 1888 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1889 { 1890 int error; 1891 1892 /* 1893 * If offline, the SDEV_MEDIA_LOADED flag will be 1894 * cleared by the caller if necessary. 1895 */ 1896 if (sd->type == T_SIMPLE_DIRECT) 1897 return (sd_get_simplifiedparms(sd, dp, flags)); 1898 1899 error = sd_get_capacity(sd, dp, flags); 1900 if (error) 1901 return (error); 1902 1903 if (sd->type == T_OPTICAL) 1904 goto page0; 1905 1906 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1907 if (!sd_get_parms_page5(sd, dp, flags) || 1908 !sd_get_parms_page4(sd, dp, flags)) 1909 return (SDGP_RESULT_OK); 1910 } else { 1911 if (!sd_get_parms_page4(sd, dp, flags) || 1912 !sd_get_parms_page5(sd, dp, flags)) 1913 return (SDGP_RESULT_OK); 1914 } 1915 1916 page0: 1917 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1918 /* Try calling driver's method for figuring out geometry. */ 1919 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1920 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1921 (sd->sc_periph, dp, dp->disksize)) { 1922 /* 1923 * Use adaptec standard fictitious geometry 1924 * this depends on which controller (e.g. 1542C is 1925 * different. but we have to put SOMETHING here..) 1926 */ 1927 dp->heads = 64; 1928 dp->sectors = 32; 1929 dp->cyls = dp->disksize / (64 * 32); 1930 } 1931 dp->rot_rate = 3600; 1932 return (SDGP_RESULT_OK); 1933 } 1934 1935 static int 1936 sd_flush(struct sd_softc *sd, int flags) 1937 { 1938 struct scsipi_periph *periph = sd->sc_periph; 1939 struct scsi_synchronize_cache cmd; 1940 1941 /* 1942 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1943 * We issue with address 0 length 0, which should be 1944 * interpreted by the device as "all remaining blocks 1945 * starting at address 0". We ignore ILLEGAL REQUEST 1946 * in the event that the command is not supported by 1947 * the device, and poll for completion so that we know 1948 * that the cache has actually been flushed. 1949 * 1950 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1951 * command, as indicated by our quirks flags. 1952 * 1953 * XXX What about older devices? 1954 */ 1955 if (periph->periph_version < 2 || 1956 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1957 return (0); 1958 1959 sd->flags |= SDF_FLUSHING; 1960 memset(&cmd, 0, sizeof(cmd)); 1961 cmd.opcode = SCSI_SYNCHRONIZE_CACHE; 1962 1963 return (scsipi_command(periph, NULL, (void *)&cmd, sizeof(cmd), 0, 0, 1964 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1965 } 1966 1967 static int 1968 sd_getcache(struct sd_softc *sd, int *bitsp) 1969 { 1970 struct scsipi_periph *periph = sd->sc_periph; 1971 struct sd_mode_sense_data scsipi_sense; 1972 int error, bits = 0; 1973 int big; 1974 union scsi_disk_pages *pages; 1975 1976 if (periph->periph_version < 2) 1977 return (EOPNOTSUPP); 1978 1979 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1980 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1981 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1982 if (error) 1983 return (error); 1984 1985 if (big) 1986 pages = (void *)(&scsipi_sense.header.big + 1); 1987 else 1988 pages = (void *)(&scsipi_sense.header.small + 1); 1989 1990 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1991 bits |= DKCACHE_READ; 1992 if (pages->caching_params.flags & CACHING_WCE) 1993 bits |= DKCACHE_WRITE; 1994 if (pages->caching_params.pg_code & PGCODE_PS) 1995 bits |= DKCACHE_SAVE; 1996 1997 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1998 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1999 sizeof(scsipi_sense.pages.caching_params), 2000 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 2001 if (error == 0) { 2002 if (big) 2003 pages = (void *)(&scsipi_sense.header.big + 1); 2004 else 2005 pages = (void *)(&scsipi_sense.header.small + 1); 2006 2007 if (pages->caching_params.flags & CACHING_RCD) 2008 bits |= DKCACHE_RCHANGE; 2009 if (pages->caching_params.flags & CACHING_WCE) 2010 bits |= DKCACHE_WCHANGE; 2011 } 2012 2013 *bitsp = bits; 2014 2015 return (0); 2016 } 2017 2018 static int 2019 sd_setcache(struct sd_softc *sd, int bits) 2020 { 2021 struct scsipi_periph *periph = sd->sc_periph; 2022 struct sd_mode_sense_data scsipi_sense; 2023 int error; 2024 uint8_t oflags, byte2 = 0; 2025 int big; 2026 union scsi_disk_pages *pages; 2027 2028 if (periph->periph_version < 2) 2029 return (EOPNOTSUPP); 2030 2031 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2032 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2033 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2034 if (error) 2035 return (error); 2036 2037 if (big) 2038 pages = (void *)(&scsipi_sense.header.big + 1); 2039 else 2040 pages = (void *)(&scsipi_sense.header.small + 1); 2041 2042 oflags = pages->caching_params.flags; 2043 2044 if (bits & DKCACHE_READ) 2045 pages->caching_params.flags &= ~CACHING_RCD; 2046 else 2047 pages->caching_params.flags |= CACHING_RCD; 2048 2049 if (bits & DKCACHE_WRITE) 2050 pages->caching_params.flags |= CACHING_WCE; 2051 else 2052 pages->caching_params.flags &= ~CACHING_WCE; 2053 2054 if (oflags == pages->caching_params.flags) 2055 return (0); 2056 2057 pages->caching_params.pg_code &= PGCODE_MASK; 2058 2059 if (bits & DKCACHE_SAVE) 2060 byte2 |= SMS_SP; 2061 2062 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2063 sizeof(struct scsipi_mode_page_header) + 2064 pages->caching_params.pg_length, 0, big)); 2065 } 2066