sd.c revision 1.221
1 /* $NetBSD: sd.c,v 1.221 2004/08/27 20:37:28 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 (at) 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 (at) dialix.oz.au) Sept 1992 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.221 2004/08/27 20:37:28 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/sdvar.h> 89 90 #define SDUNIT(dev) DISKUNIT(dev) 91 #define SDPART(dev) DISKPART(dev) 92 #define SDMINOR(unit, part) DISKMINOR(unit, part) 93 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 94 95 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 96 97 static int sdlock(struct sd_softc *); 98 static void sdunlock(struct sd_softc *); 99 static void sdminphys(struct buf *); 100 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 101 static void sdgetdisklabel(struct sd_softc *); 102 static void sdstart(struct scsipi_periph *); 103 static void sdrestart(void *); 104 static void sddone(struct scsipi_xfer *); 105 static void sd_shutdown(void *); 106 static int sd_interpret_sense(struct scsipi_xfer *); 107 108 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 109 int, int *); 110 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 111 int); 112 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 113 int); 114 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 115 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 117 int); 118 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 119 int); 120 121 static int sd_flush(struct sd_softc *, int); 122 static int sd_getcache(struct sd_softc *, int *); 123 static int sd_setcache(struct sd_softc *, int); 124 125 static int sdmatch(struct device *, struct cfdata *, void *); 126 static void sdattach(struct device *, struct device *, void *); 127 static int sdactivate(struct device *, enum devact); 128 static int sddetach(struct device *, int); 129 130 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 131 sdactivate); 132 133 extern struct cfdriver sd_cd; 134 135 static const struct scsipi_inquiry_pattern sd_patterns[] = { 136 {T_DIRECT, T_FIXED, 137 "", "", ""}, 138 {T_DIRECT, T_REMOV, 139 "", "", ""}, 140 {T_OPTICAL, T_FIXED, 141 "", "", ""}, 142 {T_OPTICAL, T_REMOV, 143 "", "", ""}, 144 {T_SIMPLE_DIRECT, T_FIXED, 145 "", "", ""}, 146 {T_SIMPLE_DIRECT, T_REMOV, 147 "", "", ""}, 148 }; 149 150 static dev_type_open(sdopen); 151 static dev_type_close(sdclose); 152 static dev_type_read(sdread); 153 static dev_type_write(sdwrite); 154 static dev_type_ioctl(sdioctl); 155 static dev_type_strategy(sdstrategy); 156 static dev_type_dump(sddump); 157 static dev_type_size(sdsize); 158 159 const struct bdevsw sd_bdevsw = { 160 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 161 }; 162 163 const struct cdevsw sd_cdevsw = { 164 sdopen, sdclose, sdread, sdwrite, sdioctl, 165 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 166 }; 167 168 static struct dkdriver sddkdriver = { sdstrategy }; 169 170 static const struct scsipi_periphsw sd_switch = { 171 sd_interpret_sense, /* check our error handler first */ 172 sdstart, /* have a queue, served by this */ 173 NULL, /* have no async handler */ 174 sddone, /* deal with stats at interrupt time */ 175 }; 176 177 struct sd_mode_sense_data { 178 /* 179 * XXX 180 * We are not going to parse this as-is -- it just has to be large 181 * enough. 182 */ 183 union { 184 struct scsipi_mode_header small; 185 struct scsipi_mode_header_big big; 186 } header; 187 struct scsi_blk_desc blk_desc; 188 union scsi_disk_pages pages; 189 }; 190 191 /* 192 * The routine called by the low level scsi routine when it discovers 193 * A device suitable for this driver 194 */ 195 static int 196 sdmatch(struct device *parent, struct cfdata *match, void *aux) 197 { 198 struct scsipibus_attach_args *sa = aux; 199 int priority; 200 201 (void)scsipi_inqmatch(&sa->sa_inqbuf, 202 (caddr_t)sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 203 sizeof(sd_patterns[0]), &priority); 204 205 return (priority); 206 } 207 208 /* 209 * Attach routine common to atapi & scsi. 210 */ 211 static void 212 sdattach(struct device *parent, struct device *self, void *aux) 213 { 214 struct sd_softc *sd = (void *)self; 215 struct scsipibus_attach_args *sa = aux; 216 struct scsipi_periph *periph = sa->sa_periph; 217 int error, result; 218 struct disk_parms *dp = &sd->params; 219 char pbuf[9]; 220 221 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 222 223 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 224 if (sd->type == T_SIMPLE_DIRECT) 225 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 226 227 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 228 periph->periph_version == 0) 229 sd->flags |= SDF_ANCIENT; 230 231 bufq_alloc(&sd->buf_queue, 232 BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 233 234 callout_init(&sd->sc_callout); 235 236 /* 237 * Store information needed to contact our base driver 238 */ 239 sd->sc_periph = periph; 240 241 periph->periph_dev = &sd->sc_dev; 242 periph->periph_switch = &sd_switch; 243 244 /* 245 * Increase our openings to the maximum-per-periph 246 * supported by the adapter. This will either be 247 * clamped down or grown by the adapter if necessary. 248 */ 249 periph->periph_openings = 250 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 251 periph->periph_flags |= PERIPH_GROW_OPENINGS; 252 253 /* 254 * Initialize and attach the disk structure. 255 */ 256 sd->sc_dk.dk_driver = &sddkdriver; 257 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 258 disk_attach(&sd->sc_dk); 259 260 /* 261 * Use the subdriver to request information regarding the drive. 262 */ 263 aprint_naive("\n"); 264 aprint_normal("\n"); 265 266 error = scsipi_test_unit_ready(periph, 267 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 268 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 269 270 if (error) 271 result = SDGP_RESULT_OFFLINE; 272 else 273 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 274 aprint_normal("%s: ", sd->sc_dev.dv_xname); 275 switch (result) { 276 case SDGP_RESULT_OK: 277 format_bytes(pbuf, sizeof(pbuf), 278 (u_int64_t)dp->disksize * dp->blksize); 279 aprint_normal( 280 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 281 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 282 (unsigned long long)dp->disksize); 283 break; 284 285 case SDGP_RESULT_OFFLINE: 286 aprint_normal("drive offline"); 287 break; 288 289 case SDGP_RESULT_UNFORMATTED: 290 aprint_normal("unformatted media"); 291 break; 292 293 #ifdef DIAGNOSTIC 294 default: 295 panic("sdattach: unknown result from get_parms"); 296 break; 297 #endif 298 } 299 aprint_normal("\n"); 300 301 /* 302 * Establish a shutdown hook so that we can ensure that 303 * our data has actually made it onto the platter at 304 * shutdown time. Note that this relies on the fact 305 * that the shutdown hook code puts us at the head of 306 * the list (thus guaranteeing that our hook runs before 307 * our ancestors'). 308 */ 309 if ((sd->sc_sdhook = 310 shutdownhook_establish(sd_shutdown, sd)) == NULL) 311 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 312 sd->sc_dev.dv_xname); 313 314 #if NRND > 0 315 /* 316 * attach the device into the random source list 317 */ 318 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 319 RND_TYPE_DISK, 0); 320 #endif 321 } 322 323 static int 324 sdactivate(struct device *self, enum devact act) 325 { 326 int rv = 0; 327 328 switch (act) { 329 case DVACT_ACTIVATE: 330 rv = EOPNOTSUPP; 331 break; 332 333 case DVACT_DEACTIVATE: 334 /* 335 * Nothing to do; we key off the device's DVF_ACTIVE. 336 */ 337 break; 338 } 339 return (rv); 340 } 341 342 static int 343 sddetach(struct device *self, int flags) 344 { 345 struct sd_softc *sd = (struct sd_softc *) self; 346 struct buf *bp; 347 int s, bmaj, cmaj, i, mn; 348 349 /* locate the major number */ 350 bmaj = bdevsw_lookup_major(&sd_bdevsw); 351 cmaj = cdevsw_lookup_major(&sd_cdevsw); 352 353 /* kill any pending restart */ 354 callout_stop(&sd->sc_callout); 355 356 s = splbio(); 357 358 /* Kill off any queued buffers. */ 359 while ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 360 bp->b_error = EIO; 361 bp->b_flags |= B_ERROR; 362 bp->b_resid = bp->b_bcount; 363 biodone(bp); 364 } 365 366 bufq_free(&sd->buf_queue); 367 368 /* Kill off any pending commands. */ 369 scsipi_kill_pending(sd->sc_periph); 370 371 splx(s); 372 373 /* Nuke the vnodes for any open instances */ 374 for (i = 0; i < MAXPARTITIONS; i++) { 375 mn = SDMINOR(self->dv_unit, i); 376 vdevgone(bmaj, mn, mn, VBLK); 377 vdevgone(cmaj, mn, mn, VCHR); 378 } 379 380 /* Detach from the disk list. */ 381 disk_detach(&sd->sc_dk); 382 383 /* Get rid of the shutdown hook. */ 384 shutdownhook_disestablish(sd->sc_sdhook); 385 386 #if NRND > 0 387 /* Unhook the entropy source. */ 388 rnd_detach_source(&sd->rnd_source); 389 #endif 390 391 return (0); 392 } 393 394 /* 395 * Wait interruptibly for an exclusive lock. 396 * 397 * XXX 398 * Several drivers do this; it should be abstracted and made MP-safe. 399 */ 400 static int 401 sdlock(struct sd_softc *sd) 402 { 403 int error; 404 405 while ((sd->flags & SDF_LOCKED) != 0) { 406 sd->flags |= SDF_WANTED; 407 if ((error = tsleep(sd, PRIBIO | PCATCH, "sdlck", 0)) != 0) 408 return (error); 409 } 410 sd->flags |= SDF_LOCKED; 411 return (0); 412 } 413 414 /* 415 * Unlock and wake up any waiters. 416 */ 417 static void 418 sdunlock(struct sd_softc *sd) 419 { 420 421 sd->flags &= ~SDF_LOCKED; 422 if ((sd->flags & SDF_WANTED) != 0) { 423 sd->flags &= ~SDF_WANTED; 424 wakeup(sd); 425 } 426 } 427 428 /* 429 * open the device. Make sure the partition info is a up-to-date as can be. 430 */ 431 static int 432 sdopen(dev_t dev, int flag, int fmt, struct proc *p) 433 { 434 struct sd_softc *sd; 435 struct scsipi_periph *periph; 436 struct scsipi_adapter *adapt; 437 int unit, part; 438 int error; 439 440 unit = SDUNIT(dev); 441 if (unit >= sd_cd.cd_ndevs) 442 return (ENXIO); 443 sd = sd_cd.cd_devs[unit]; 444 if (sd == NULL) 445 return (ENXIO); 446 447 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 448 return (ENODEV); 449 450 periph = sd->sc_periph; 451 adapt = periph->periph_channel->chan_adapter; 452 part = SDPART(dev); 453 454 SC_DEBUG(periph, SCSIPI_DB1, 455 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 456 sd_cd.cd_ndevs, part)); 457 458 /* 459 * If this is the first open of this device, add a reference 460 * to the adapter. 461 */ 462 if (sd->sc_dk.dk_openmask == 0 && 463 (error = scsipi_adapter_addref(adapt)) != 0) 464 return (error); 465 466 if ((error = sdlock(sd)) != 0) 467 goto bad4; 468 469 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 470 /* 471 * If any partition is open, but the disk has been invalidated, 472 * disallow further opens of non-raw partition 473 */ 474 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 475 (part != RAW_PART || fmt != S_IFCHR)) { 476 error = EIO; 477 goto bad3; 478 } 479 } else { 480 int silent; 481 482 if (part == RAW_PART && fmt == S_IFCHR) 483 silent = XS_CTL_SILENT; 484 else 485 silent = 0; 486 487 /* Check that it is still responding and ok. */ 488 error = scsipi_test_unit_ready(periph, 489 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 490 silent); 491 492 /* 493 * Start the pack spinning if necessary. Always allow the 494 * raw parition to be opened, for raw IOCTLs. Data transfers 495 * will check for SDEV_MEDIA_LOADED. 496 */ 497 if (error == EIO) { 498 int error2; 499 500 error2 = scsipi_start(periph, SSS_START, silent); 501 switch (error2) { 502 case 0: 503 error = 0; 504 break; 505 case EIO: 506 case EINVAL: 507 break; 508 default: 509 error = error2; 510 break; 511 } 512 } 513 if (error) { 514 if (silent) 515 goto out; 516 goto bad3; 517 } 518 519 periph->periph_flags |= PERIPH_OPEN; 520 521 if (periph->periph_flags & PERIPH_REMOVABLE) { 522 /* Lock the pack in. */ 523 error = scsipi_prevent(periph, PR_PREVENT, 524 XS_CTL_IGNORE_ILLEGAL_REQUEST | 525 XS_CTL_IGNORE_MEDIA_CHANGE); 526 if (error) 527 goto bad; 528 } 529 530 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 531 int param_error; 532 periph->periph_flags |= PERIPH_MEDIA_LOADED; 533 534 /* 535 * Load the physical device parameters. 536 * 537 * Note that if media is present but unformatted, 538 * we allow the open (so that it can be formatted!). 539 * The drive should refuse real I/O, if the media is 540 * unformatted. 541 */ 542 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 543 == SDGP_RESULT_OFFLINE) { 544 error = ENXIO; 545 goto bad2; 546 } 547 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 548 549 /* Load the partition info if not already loaded. */ 550 if (param_error == 0) { 551 sdgetdisklabel(sd); 552 SC_DEBUG(periph, SCSIPI_DB3, 553 ("Disklabel loaded ")); 554 } 555 } 556 } 557 558 /* Check that the partition exists. */ 559 if (part != RAW_PART && 560 (part >= sd->sc_dk.dk_label->d_npartitions || 561 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 562 error = ENXIO; 563 goto bad; 564 } 565 566 out: /* Insure only one open at a time. */ 567 switch (fmt) { 568 case S_IFCHR: 569 sd->sc_dk.dk_copenmask |= (1 << part); 570 break; 571 case S_IFBLK: 572 sd->sc_dk.dk_bopenmask |= (1 << part); 573 break; 574 } 575 sd->sc_dk.dk_openmask = 576 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 577 578 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 579 sdunlock(sd); 580 return (0); 581 582 bad2: 583 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 584 585 bad: 586 if (sd->sc_dk.dk_openmask == 0) { 587 if (periph->periph_flags & PERIPH_REMOVABLE) 588 scsipi_prevent(periph, PR_ALLOW, 589 XS_CTL_IGNORE_ILLEGAL_REQUEST | 590 XS_CTL_IGNORE_MEDIA_CHANGE); 591 periph->periph_flags &= ~PERIPH_OPEN; 592 } 593 594 bad3: 595 sdunlock(sd); 596 bad4: 597 if (sd->sc_dk.dk_openmask == 0) 598 scsipi_adapter_delref(adapt); 599 return (error); 600 } 601 602 /* 603 * close the device.. only called if we are the LAST occurence of an open 604 * device. Convenient now but usually a pain. 605 */ 606 static int 607 sdclose(dev_t dev, int flag, int fmt, struct proc *p) 608 { 609 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 610 struct scsipi_periph *periph = sd->sc_periph; 611 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 612 int part = SDPART(dev); 613 int error; 614 615 if ((error = sdlock(sd)) != 0) 616 return (error); 617 618 switch (fmt) { 619 case S_IFCHR: 620 sd->sc_dk.dk_copenmask &= ~(1 << part); 621 break; 622 case S_IFBLK: 623 sd->sc_dk.dk_bopenmask &= ~(1 << part); 624 break; 625 } 626 sd->sc_dk.dk_openmask = 627 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 628 629 if (sd->sc_dk.dk_openmask == 0) { 630 /* 631 * If the disk cache needs flushing, and the disk supports 632 * it, do it now. 633 */ 634 if ((sd->flags & SDF_DIRTY) != 0) { 635 if (sd_flush(sd, 0)) { 636 printf("%s: cache synchronization failed\n", 637 sd->sc_dev.dv_xname); 638 sd->flags &= ~SDF_FLUSHING; 639 } else 640 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 641 } 642 643 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 644 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 645 646 scsipi_wait_drain(periph); 647 648 if (periph->periph_flags & PERIPH_REMOVABLE) 649 scsipi_prevent(periph, PR_ALLOW, 650 XS_CTL_IGNORE_ILLEGAL_REQUEST | 651 XS_CTL_IGNORE_NOT_READY); 652 periph->periph_flags &= ~PERIPH_OPEN; 653 654 scsipi_wait_drain(periph); 655 656 scsipi_adapter_delref(adapt); 657 } 658 659 sdunlock(sd); 660 return (0); 661 } 662 663 /* 664 * Actually translate the requested transfer into one the physical driver 665 * can understand. The transfer is described by a buf and will include 666 * only one physical transfer. 667 */ 668 static void 669 sdstrategy(struct buf *bp) 670 { 671 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 672 struct scsipi_periph *periph = sd->sc_periph; 673 struct disklabel *lp; 674 daddr_t blkno; 675 int s; 676 boolean_t sector_aligned; 677 678 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 679 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 680 ("%ld bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 681 /* 682 * If the device has been made invalid, error out 683 */ 684 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 685 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 686 if (periph->periph_flags & PERIPH_OPEN) 687 bp->b_error = EIO; 688 else 689 bp->b_error = ENODEV; 690 goto bad; 691 } 692 693 lp = sd->sc_dk.dk_label; 694 695 /* 696 * The transfer must be a whole number of blocks, offset must not be 697 * negative. 698 */ 699 if (lp->d_secsize == DEV_BSIZE) { 700 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 701 } else { 702 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 703 } 704 if (!sector_aligned || bp->b_blkno < 0) { 705 bp->b_error = EINVAL; 706 goto bad; 707 } 708 /* 709 * If it's a null transfer, return immediatly 710 */ 711 if (bp->b_bcount == 0) 712 goto done; 713 714 /* 715 * Do bounds checking, adjust transfer. if error, process. 716 * If end of partition, just return. 717 */ 718 if (SDPART(bp->b_dev) == RAW_PART) { 719 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 720 sd->params.disksize512) <= 0) 721 goto done; 722 } else { 723 if (bounds_check_with_label(&sd->sc_dk, bp, 724 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 725 goto done; 726 } 727 728 /* 729 * Now convert the block number to absolute and put it in 730 * terms of the device's logical block size. 731 */ 732 if (lp->d_secsize == DEV_BSIZE) 733 blkno = bp->b_blkno; 734 else if (lp->d_secsize > DEV_BSIZE) 735 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 736 else 737 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 738 739 if (SDPART(bp->b_dev) != RAW_PART) 740 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 741 742 bp->b_rawblkno = blkno; 743 744 s = splbio(); 745 746 /* 747 * Place it in the queue of disk activities for this disk. 748 * 749 * XXX Only do disksort() if the current operating mode does not 750 * XXX include tagged queueing. 751 */ 752 BUFQ_PUT(&sd->buf_queue, bp); 753 754 /* 755 * Tell the device to get going on the transfer if it's 756 * not doing anything, otherwise just wait for completion 757 */ 758 sdstart(sd->sc_periph); 759 760 splx(s); 761 return; 762 763 bad: 764 bp->b_flags |= B_ERROR; 765 done: 766 /* 767 * Correctly set the buf to indicate a completed xfer 768 */ 769 bp->b_resid = bp->b_bcount; 770 biodone(bp); 771 } 772 773 /* 774 * sdstart looks to see if there is a buf waiting for the device 775 * and that the device is not already busy. If both are true, 776 * It dequeues the buf and creates a scsi command to perform the 777 * transfer in the buf. The transfer request will call scsipi_done 778 * on completion, which will in turn call this routine again 779 * so that the next queued transfer is performed. 780 * The bufs are queued by the strategy routine (sdstrategy) 781 * 782 * This routine is also called after other non-queued requests 783 * have been made of the scsi driver, to ensure that the queue 784 * continues to be drained. 785 * 786 * must be called at the correct (highish) spl level 787 * sdstart() is called at splbio from sdstrategy and scsipi_done 788 */ 789 static void 790 sdstart(struct scsipi_periph *periph) 791 { 792 struct sd_softc *sd = (void *)periph->periph_dev; 793 struct disklabel *lp = sd->sc_dk.dk_label; 794 struct buf *bp = 0; 795 struct scsipi_rw_big cmd_big; 796 struct scsi_rw cmd_small; 797 struct scsipi_generic *cmdp; 798 int nblks, cmdlen, error, flags; 799 800 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 801 /* 802 * Check if the device has room for another command 803 */ 804 while (periph->periph_active < periph->periph_openings) { 805 /* 806 * there is excess capacity, but a special waits 807 * It'll need the adapter as soon as we clear out of the 808 * way and let it run (user level wait). 809 */ 810 if (periph->periph_flags & PERIPH_WAITING) { 811 periph->periph_flags &= ~PERIPH_WAITING; 812 wakeup((caddr_t)periph); 813 return; 814 } 815 816 /* 817 * If the device has become invalid, abort all the 818 * reads and writes until all files have been closed and 819 * re-opened 820 */ 821 if (__predict_false( 822 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 823 if ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 824 bp->b_error = EIO; 825 bp->b_flags |= B_ERROR; 826 bp->b_resid = bp->b_bcount; 827 biodone(bp); 828 continue; 829 } else { 830 return; 831 } 832 } 833 834 /* 835 * See if there is a buf with work for us to do.. 836 */ 837 if ((bp = BUFQ_PEEK(&sd->buf_queue)) == NULL) 838 return; 839 840 /* 841 * We have a buf, now we should make a command. 842 */ 843 844 if (lp->d_secsize == DEV_BSIZE) 845 nblks = bp->b_bcount >> DEV_BSHIFT; 846 else 847 nblks = howmany(bp->b_bcount, lp->d_secsize); 848 849 /* 850 * Fill out the scsi command. If the transfer will 851 * fit in a "small" cdb, use it. 852 */ 853 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 854 ((nblks & 0xff) == nblks) && 855 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 856 /* 857 * We can fit in a small cdb. 858 */ 859 memset(&cmd_small, 0, sizeof(cmd_small)); 860 cmd_small.opcode = (bp->b_flags & B_READ) ? 861 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 862 _lto3b(bp->b_rawblkno, cmd_small.addr); 863 cmd_small.length = nblks & 0xff; 864 cmdlen = sizeof(cmd_small); 865 cmdp = (struct scsipi_generic *)&cmd_small; 866 } else { 867 /* 868 * Need a large cdb. 869 */ 870 memset(&cmd_big, 0, sizeof(cmd_big)); 871 cmd_big.opcode = (bp->b_flags & B_READ) ? 872 READ_BIG : WRITE_BIG; 873 _lto4b(bp->b_rawblkno, cmd_big.addr); 874 _lto2b(nblks, cmd_big.length); 875 cmdlen = sizeof(cmd_big); 876 cmdp = (struct scsipi_generic *)&cmd_big; 877 } 878 879 /* Instrumentation. */ 880 disk_busy(&sd->sc_dk); 881 882 /* 883 * Mark the disk dirty so that the cache will be 884 * flushed on close. 885 */ 886 if ((bp->b_flags & B_READ) == 0) 887 sd->flags |= SDF_DIRTY; 888 889 /* 890 * Figure out what flags to use. 891 */ 892 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 893 if (bp->b_flags & B_READ) 894 flags |= XS_CTL_DATA_IN; 895 else 896 flags |= XS_CTL_DATA_OUT; 897 898 /* 899 * Call the routine that chats with the adapter. 900 * Note: we cannot sleep as we may be an interrupt 901 */ 902 error = scsipi_command(periph, cmdp, cmdlen, 903 (u_char *)bp->b_data, bp->b_bcount, 904 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 905 if (__predict_false(error)) { 906 disk_unbusy(&sd->sc_dk, 0, 0); 907 printf("%s: not queued, error %d\n", 908 sd->sc_dev.dv_xname, error); 909 } 910 if (__predict_false(error == ENOMEM)) { 911 /* 912 * out of memory. Keep this buffer in the queue, and 913 * retry later. 914 */ 915 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 916 periph); 917 return; 918 } 919 #ifdef DIAGNOSTIC 920 if (BUFQ_GET(&sd->buf_queue) != bp) 921 panic("sdstart(): dequeued wrong buf"); 922 #else 923 BUFQ_GET(&sd->buf_queue); 924 #endif 925 926 } 927 } 928 929 static void 930 sdrestart(void *v) 931 { 932 int s = splbio(); 933 sdstart((struct scsipi_periph *)v); 934 splx(s); 935 } 936 937 static void 938 sddone(struct scsipi_xfer *xs) 939 { 940 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 941 942 if (sd->flags & SDF_FLUSHING) { 943 /* Flush completed, no longer dirty. */ 944 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 945 } 946 947 if (xs->bp != NULL) { 948 disk_unbusy(&sd->sc_dk, xs->bp->b_bcount - xs->bp->b_resid, 949 (xs->bp->b_flags & B_READ)); 950 #if NRND > 0 951 rnd_add_uint32(&sd->rnd_source, xs->bp->b_rawblkno); 952 #endif 953 } 954 } 955 956 static void 957 sdminphys(struct buf *bp) 958 { 959 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 960 long max; 961 962 /* 963 * If the device is ancient, we want to make sure that 964 * the transfer fits into a 6-byte cdb. 965 * 966 * XXX Note that the SCSI-I spec says that 256-block transfers 967 * are allowed in a 6-byte read/write, and are specified 968 * by settng the "length" to 0. However, we're conservative 969 * here, allowing only 255-block transfers in case an 970 * ancient device gets confused by length == 0. A length of 0 971 * in a 10-byte read/write actually means 0 blocks. 972 */ 973 if ((sd->flags & SDF_ANCIENT) && 974 ((sd->sc_periph->periph_flags & 975 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 976 max = sd->sc_dk.dk_label->d_secsize * 0xff; 977 978 if (bp->b_bcount > max) 979 bp->b_bcount = max; 980 } 981 982 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 983 } 984 985 static int 986 sdread(dev_t dev, struct uio *uio, int ioflag) 987 { 988 989 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 990 } 991 992 static int 993 sdwrite(dev_t dev, struct uio *uio, int ioflag) 994 { 995 996 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 997 } 998 999 /* 1000 * Perform special action on behalf of the user 1001 * Knows about the internals of this device 1002 */ 1003 static int 1004 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 1005 { 1006 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1007 struct scsipi_periph *periph = sd->sc_periph; 1008 int part = SDPART(dev); 1009 int error = 0; 1010 #ifdef __HAVE_OLD_DISKLABEL 1011 struct disklabel *newlabel = NULL; 1012 #endif 1013 1014 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1015 1016 /* 1017 * If the device is not valid, some IOCTLs can still be 1018 * handled on the raw partition. Check this here. 1019 */ 1020 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1021 switch (cmd) { 1022 case DIOCKLABEL: 1023 case DIOCWLABEL: 1024 case DIOCLOCK: 1025 case DIOCEJECT: 1026 case ODIOCEJECT: 1027 case DIOCGCACHE: 1028 case DIOCSCACHE: 1029 case SCIOCIDENTIFY: 1030 case OSCIOCIDENTIFY: 1031 case SCIOCCOMMAND: 1032 case SCIOCDEBUG: 1033 if (part == RAW_PART) 1034 break; 1035 /* FALLTHROUGH */ 1036 default: 1037 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1038 return (ENODEV); 1039 else 1040 return (EIO); 1041 } 1042 } 1043 1044 switch (cmd) { 1045 case DIOCGDINFO: 1046 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1047 return (0); 1048 1049 #ifdef __HAVE_OLD_DISKLABEL 1050 case ODIOCGDINFO: 1051 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1052 if (newlabel == NULL) 1053 return EIO; 1054 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1055 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1056 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1057 else 1058 error = ENOTTY; 1059 free(newlabel, M_TEMP); 1060 return error; 1061 #endif 1062 1063 case DIOCGPART: 1064 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1065 ((struct partinfo *)addr)->part = 1066 &sd->sc_dk.dk_label->d_partitions[part]; 1067 return (0); 1068 1069 case DIOCWDINFO: 1070 case DIOCSDINFO: 1071 #ifdef __HAVE_OLD_DISKLABEL 1072 case ODIOCWDINFO: 1073 case ODIOCSDINFO: 1074 #endif 1075 { 1076 struct disklabel *lp; 1077 1078 if ((flag & FWRITE) == 0) 1079 return (EBADF); 1080 1081 #ifdef __HAVE_OLD_DISKLABEL 1082 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1083 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1084 if (newlabel == NULL) 1085 return EIO; 1086 memset(newlabel, 0, sizeof newlabel); 1087 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1088 lp = newlabel; 1089 } else 1090 #endif 1091 lp = (struct disklabel *)addr; 1092 1093 if ((error = sdlock(sd)) != 0) 1094 goto bad; 1095 sd->flags |= SDF_LABELLING; 1096 1097 error = setdisklabel(sd->sc_dk.dk_label, 1098 lp, /*sd->sc_dk.dk_openmask : */0, 1099 sd->sc_dk.dk_cpulabel); 1100 if (error == 0) { 1101 if (cmd == DIOCWDINFO 1102 #ifdef __HAVE_OLD_DISKLABEL 1103 || cmd == ODIOCWDINFO 1104 #endif 1105 ) 1106 error = writedisklabel(SDLABELDEV(dev), 1107 sdstrategy, sd->sc_dk.dk_label, 1108 sd->sc_dk.dk_cpulabel); 1109 } 1110 1111 sd->flags &= ~SDF_LABELLING; 1112 sdunlock(sd); 1113 bad: 1114 #ifdef __HAVE_OLD_DISKLABEL 1115 if (newlabel != NULL) 1116 free(newlabel, M_TEMP); 1117 #endif 1118 return (error); 1119 } 1120 1121 case DIOCKLABEL: 1122 if (*(int *)addr) 1123 periph->periph_flags |= PERIPH_KEEP_LABEL; 1124 else 1125 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1126 return (0); 1127 1128 case DIOCWLABEL: 1129 if ((flag & FWRITE) == 0) 1130 return (EBADF); 1131 if (*(int *)addr) 1132 sd->flags |= SDF_WLABEL; 1133 else 1134 sd->flags &= ~SDF_WLABEL; 1135 return (0); 1136 1137 case DIOCLOCK: 1138 return (scsipi_prevent(periph, 1139 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1140 1141 case DIOCEJECT: 1142 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1143 return (ENOTTY); 1144 if (*(int *)addr == 0) { 1145 /* 1146 * Don't force eject: check that we are the only 1147 * partition open. If so, unlock it. 1148 */ 1149 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1150 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1151 sd->sc_dk.dk_openmask) { 1152 error = scsipi_prevent(periph, PR_ALLOW, 1153 XS_CTL_IGNORE_NOT_READY); 1154 if (error) 1155 return (error); 1156 } else { 1157 return (EBUSY); 1158 } 1159 } 1160 /* FALLTHROUGH */ 1161 case ODIOCEJECT: 1162 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1163 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1164 1165 case DIOCGDEFLABEL: 1166 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1167 return (0); 1168 1169 #ifdef __HAVE_OLD_DISKLABEL 1170 case ODIOCGDEFLABEL: 1171 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1172 if (newlabel == NULL) 1173 return EIO; 1174 sdgetdefaultlabel(sd, newlabel); 1175 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1176 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1177 else 1178 error = ENOTTY; 1179 free(newlabel, M_TEMP); 1180 return error; 1181 #endif 1182 1183 case DIOCGCACHE: 1184 return (sd_getcache(sd, (int *) addr)); 1185 1186 case DIOCSCACHE: 1187 if ((flag & FWRITE) == 0) 1188 return (EBADF); 1189 return (sd_setcache(sd, *(int *) addr)); 1190 1191 case DIOCCACHESYNC: 1192 /* 1193 * XXX Do we really need to care about having a writable 1194 * file descriptor here? 1195 */ 1196 if ((flag & FWRITE) == 0) 1197 return (EBADF); 1198 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1199 error = sd_flush(sd, 0); 1200 if (error) 1201 sd->flags &= ~SDF_FLUSHING; 1202 else 1203 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1204 } else 1205 error = 0; 1206 return (error); 1207 1208 default: 1209 if (part != RAW_PART) 1210 return (ENOTTY); 1211 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1212 } 1213 1214 #ifdef DIAGNOSTIC 1215 panic("sdioctl: impossible"); 1216 #endif 1217 } 1218 1219 static void 1220 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1221 { 1222 1223 memset(lp, 0, sizeof(struct disklabel)); 1224 1225 lp->d_secsize = sd->params.blksize; 1226 lp->d_ntracks = sd->params.heads; 1227 lp->d_nsectors = sd->params.sectors; 1228 lp->d_ncylinders = sd->params.cyls; 1229 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1230 1231 switch (scsipi_periph_bustype(sd->sc_periph)) { 1232 case SCSIPI_BUSTYPE_SCSI: 1233 lp->d_type = DTYPE_SCSI; 1234 break; 1235 case SCSIPI_BUSTYPE_ATAPI: 1236 lp->d_type = DTYPE_ATAPI; 1237 break; 1238 } 1239 /* 1240 * XXX 1241 * We could probe the mode pages to figure out what kind of disc it is. 1242 * Is this worthwhile? 1243 */ 1244 strncpy(lp->d_typename, "mydisk", 16); 1245 strncpy(lp->d_packname, "fictitious", 16); 1246 lp->d_secperunit = sd->params.disksize; 1247 lp->d_rpm = sd->params.rot_rate; 1248 lp->d_interleave = 1; 1249 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1250 D_REMOVABLE : 0; 1251 1252 lp->d_partitions[RAW_PART].p_offset = 0; 1253 lp->d_partitions[RAW_PART].p_size = 1254 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1255 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1256 lp->d_npartitions = RAW_PART + 1; 1257 1258 lp->d_magic = DISKMAGIC; 1259 lp->d_magic2 = DISKMAGIC; 1260 lp->d_checksum = dkcksum(lp); 1261 } 1262 1263 1264 /* 1265 * Load the label information on the named device 1266 */ 1267 static void 1268 sdgetdisklabel(struct sd_softc *sd) 1269 { 1270 struct disklabel *lp = sd->sc_dk.dk_label; 1271 const char *errstring; 1272 1273 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1274 1275 sdgetdefaultlabel(sd, lp); 1276 1277 if (lp->d_secpercyl == 0) { 1278 lp->d_secpercyl = 100; 1279 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1280 } 1281 1282 /* 1283 * Call the generic disklabel extraction routine 1284 */ 1285 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1286 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1287 if (errstring) { 1288 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1289 return; 1290 } 1291 } 1292 1293 static void 1294 sd_shutdown(void *arg) 1295 { 1296 struct sd_softc *sd = arg; 1297 1298 /* 1299 * If the disk cache needs to be flushed, and the disk supports 1300 * it, flush it. We're cold at this point, so we poll for 1301 * completion. 1302 */ 1303 if ((sd->flags & SDF_DIRTY) != 0) { 1304 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1305 printf("%s: cache synchronization failed\n", 1306 sd->sc_dev.dv_xname); 1307 sd->flags &= ~SDF_FLUSHING; 1308 } else 1309 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1310 } 1311 } 1312 1313 /* 1314 * Check Errors 1315 */ 1316 static int 1317 sd_interpret_sense(struct scsipi_xfer *xs) 1318 { 1319 struct scsipi_periph *periph = xs->xs_periph; 1320 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1321 struct sd_softc *sd = (void *)periph->periph_dev; 1322 int s, error, retval = EJUSTRETURN; 1323 1324 /* 1325 * If the periph is already recovering, just do the normal 1326 * error processing. 1327 */ 1328 if (periph->periph_flags & PERIPH_RECOVERING) 1329 return (retval); 1330 1331 /* 1332 * If the device is not open yet, let the generic code handle it. 1333 */ 1334 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1335 return (retval); 1336 1337 /* 1338 * If it isn't a extended or extended/deferred error, let 1339 * the generic code handle it. 1340 */ 1341 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1342 (sense->error_code & SSD_ERRCODE) != 0x71) 1343 return (retval); 1344 1345 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1346 sense->add_sense_code == 0x4) { 1347 if (sense->add_sense_code_qual == 0x01) { 1348 /* 1349 * Unit In The Process Of Becoming Ready. 1350 */ 1351 printf("%s: waiting for pack to spin up...\n", 1352 sd->sc_dev.dv_xname); 1353 if (!callout_pending(&periph->periph_callout)) 1354 scsipi_periph_freeze(periph, 1); 1355 callout_reset(&periph->periph_callout, 1356 5 * hz, scsipi_periph_timed_thaw, periph); 1357 retval = ERESTART; 1358 } else if (sense->add_sense_code_qual == 0x02) { 1359 printf("%s: pack is stopped, restarting...\n", 1360 sd->sc_dev.dv_xname); 1361 s = splbio(); 1362 periph->periph_flags |= PERIPH_RECOVERING; 1363 splx(s); 1364 error = scsipi_start(periph, SSS_START, 1365 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1366 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1367 if (error) { 1368 printf("%s: unable to restart pack\n", 1369 sd->sc_dev.dv_xname); 1370 retval = error; 1371 } else 1372 retval = ERESTART; 1373 s = splbio(); 1374 periph->periph_flags &= ~PERIPH_RECOVERING; 1375 splx(s); 1376 } 1377 } 1378 if ((sense->flags & SSD_KEY) == SKEY_MEDIUM_ERROR && 1379 sense->add_sense_code == 0x31 && 1380 sense->add_sense_code_qual == 0x00) { /* maybe for any asq ? */ 1381 /* Medium Format Corrupted */ 1382 retval = EFTYPE; 1383 } 1384 return (retval); 1385 } 1386 1387 1388 static int 1389 sdsize(dev_t dev) 1390 { 1391 struct sd_softc *sd; 1392 int part, unit, omask; 1393 int size; 1394 1395 unit = SDUNIT(dev); 1396 if (unit >= sd_cd.cd_ndevs) 1397 return (-1); 1398 sd = sd_cd.cd_devs[unit]; 1399 if (sd == NULL) 1400 return (-1); 1401 1402 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1403 return (-1); 1404 1405 part = SDPART(dev); 1406 omask = sd->sc_dk.dk_openmask & (1 << part); 1407 1408 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1409 return (-1); 1410 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1411 size = -1; 1412 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1413 size = -1; 1414 else 1415 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1416 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1417 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1418 return (-1); 1419 return (size); 1420 } 1421 1422 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1423 static struct scsipi_xfer sx; 1424 static int sddoingadump; 1425 1426 /* 1427 * dump all of physical memory into the partition specified, starting 1428 * at offset 'dumplo' into the partition. 1429 */ 1430 static int 1431 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1432 { 1433 struct sd_softc *sd; /* disk unit to do the I/O */ 1434 struct disklabel *lp; /* disk's disklabel */ 1435 int unit, part; 1436 int sectorsize; /* size of a disk sector */ 1437 int nsects; /* number of sectors in partition */ 1438 int sectoff; /* sector offset of partition */ 1439 int totwrt; /* total number of sectors left to write */ 1440 int nwrt; /* current number of sectors to write */ 1441 struct scsipi_rw_big cmd; /* write command */ 1442 struct scsipi_xfer *xs; /* ... convenience */ 1443 struct scsipi_periph *periph; 1444 struct scsipi_channel *chan; 1445 1446 /* Check if recursive dump; if so, punt. */ 1447 if (sddoingadump) 1448 return (EFAULT); 1449 1450 /* Mark as active early. */ 1451 sddoingadump = 1; 1452 1453 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1454 part = SDPART(dev); 1455 1456 /* Check for acceptable drive number. */ 1457 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1458 return (ENXIO); 1459 1460 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1461 return (ENODEV); 1462 1463 periph = sd->sc_periph; 1464 chan = periph->periph_channel; 1465 1466 /* Make sure it was initialized. */ 1467 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1468 return (ENXIO); 1469 1470 /* Convert to disk sectors. Request must be a multiple of size. */ 1471 lp = sd->sc_dk.dk_label; 1472 sectorsize = lp->d_secsize; 1473 if ((size % sectorsize) != 0) 1474 return (EFAULT); 1475 totwrt = size / sectorsize; 1476 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1477 1478 nsects = lp->d_partitions[part].p_size; 1479 sectoff = lp->d_partitions[part].p_offset; 1480 1481 /* Check transfer bounds against partition size. */ 1482 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1483 return (EINVAL); 1484 1485 /* Offset block number to start of partition. */ 1486 blkno += sectoff; 1487 1488 xs = &sx; 1489 1490 while (totwrt > 0) { 1491 nwrt = totwrt; /* XXX */ 1492 #ifndef SD_DUMP_NOT_TRUSTED 1493 /* 1494 * Fill out the scsi command 1495 */ 1496 memset(&cmd, 0, sizeof(cmd)); 1497 cmd.opcode = WRITE_BIG; 1498 _lto4b(blkno, cmd.addr); 1499 _lto2b(nwrt, cmd.length); 1500 /* 1501 * Fill out the scsipi_xfer structure 1502 * Note: we cannot sleep as we may be an interrupt 1503 * don't use scsipi_command() as it may want to wait 1504 * for an xs. 1505 */ 1506 memset(xs, 0, sizeof(sx)); 1507 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1508 XS_CTL_DATA_OUT; 1509 xs->xs_status = 0; 1510 xs->xs_periph = periph; 1511 xs->xs_retries = SDRETRIES; 1512 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1513 xs->cmd = (struct scsipi_generic *)&cmd; 1514 xs->cmdlen = sizeof(cmd); 1515 xs->resid = nwrt * sectorsize; 1516 xs->error = XS_NOERROR; 1517 xs->bp = 0; 1518 xs->data = va; 1519 xs->datalen = nwrt * sectorsize; 1520 1521 /* 1522 * Pass all this info to the scsi driver. 1523 */ 1524 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1525 if ((xs->xs_status & XS_STS_DONE) == 0 || 1526 xs->error != XS_NOERROR) 1527 return (EIO); 1528 #else /* SD_DUMP_NOT_TRUSTED */ 1529 /* Let's just talk about this first... */ 1530 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1531 delay(500 * 1000); /* half a second */ 1532 #endif /* SD_DUMP_NOT_TRUSTED */ 1533 1534 /* update block count */ 1535 totwrt -= nwrt; 1536 blkno += nwrt; 1537 va += sectorsize * nwrt; 1538 } 1539 sddoingadump = 0; 1540 return (0); 1541 } 1542 1543 static int 1544 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1545 int page, int flags, int *big) 1546 { 1547 1548 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1549 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1550 *big = 1; 1551 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1552 size + sizeof(struct scsipi_mode_header_big), 1553 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1554 } else { 1555 *big = 0; 1556 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1557 size + sizeof(struct scsipi_mode_header), 1558 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1559 } 1560 } 1561 1562 static int 1563 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1564 int flags, int big) 1565 { 1566 1567 if (big) { 1568 struct scsipi_mode_header_big *header = sense; 1569 1570 _lto2b(0, header->data_length); 1571 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1572 size + sizeof(struct scsipi_mode_header_big), 1573 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1574 } else { 1575 struct scsipi_mode_header *header = sense; 1576 1577 header->data_length = 0; 1578 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1579 size + sizeof(struct scsipi_mode_header), 1580 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1581 } 1582 } 1583 1584 static int 1585 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1586 { 1587 struct { 1588 struct scsipi_mode_header header; 1589 /* no block descriptor */ 1590 u_int8_t pg_code; /* page code (should be 6) */ 1591 u_int8_t pg_length; /* page length (should be 11) */ 1592 u_int8_t wcd; /* bit0: cache disable */ 1593 u_int8_t lbs[2]; /* logical block size */ 1594 u_int8_t size[5]; /* number of log. blocks */ 1595 u_int8_t pp; /* power/performance */ 1596 u_int8_t flags; 1597 u_int8_t resvd; 1598 } scsipi_sense; 1599 u_int64_t sectors; 1600 int error; 1601 1602 /* 1603 * scsipi_size (ie "read capacity") and mode sense page 6 1604 * give the same information. Do both for now, and check 1605 * for consistency. 1606 * XXX probably differs for removable media 1607 */ 1608 dp->blksize = 512; 1609 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1610 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1611 1612 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1613 &scsipi_sense.header, sizeof(scsipi_sense), 1614 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1615 1616 if (error != 0) 1617 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1618 1619 dp->blksize = _2btol(scsipi_sense.lbs); 1620 if (dp->blksize == 0) 1621 dp->blksize = 512; 1622 1623 /* 1624 * Create a pseudo-geometry. 1625 */ 1626 dp->heads = 64; 1627 dp->sectors = 32; 1628 dp->cyls = sectors / (dp->heads * dp->sectors); 1629 dp->disksize = _5btol(scsipi_sense.size); 1630 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1631 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1632 (unsigned long long)dp->disksize, 1633 (unsigned long long)sectors); 1634 dp->disksize = sectors; 1635 } 1636 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1637 1638 return (SDGP_RESULT_OK); 1639 } 1640 1641 /* 1642 * Get the scsi driver to send a full inquiry to the * device and use the 1643 * results to fill out the disk parameter structure. 1644 */ 1645 static int 1646 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1647 { 1648 u_int64_t sectors; 1649 int error; 1650 #if 0 1651 int i; 1652 u_int8_t *p; 1653 #endif 1654 1655 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1656 if (sectors == 0) { 1657 struct scsipi_read_format_capacities cmd; 1658 struct { 1659 struct scsipi_capacity_list_header header; 1660 struct scsipi_capacity_descriptor desc; 1661 } __attribute__((packed)) data; 1662 1663 memset(&cmd, 0, sizeof(cmd)); 1664 memset(&data, 0, sizeof(data)); 1665 cmd.opcode = READ_FORMAT_CAPACITIES; 1666 _lto2b(sizeof(data), cmd.length); 1667 1668 error = scsipi_command(sd->sc_periph, (void *)&cmd, sizeof(cmd), 1669 (void *)&data, sizeof(data), SDRETRIES, 20000, NULL, 1670 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1671 if (error == EFTYPE) { 1672 /* Medium Format Corrupted, handle as not formatted */ 1673 return (SDGP_RESULT_UNFORMATTED); 1674 } 1675 if (error || data.header.length == 0) 1676 return (SDGP_RESULT_OFFLINE); 1677 1678 #if 0 1679 printf("rfc: length=%d\n", data.header.length); 1680 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"); 1681 #endif 1682 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1683 case SCSIPI_CAP_DESC_CODE_RESERVED: 1684 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1685 break; 1686 1687 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1688 return (SDGP_RESULT_UNFORMATTED); 1689 1690 case SCSIPI_CAP_DESC_CODE_NONE: 1691 return (SDGP_RESULT_OFFLINE); 1692 } 1693 1694 dp->disksize = sectors = _4btol(data.desc.nblks); 1695 if (sectors == 0) 1696 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1697 1698 dp->blksize = _3btol(data.desc.blklen); 1699 if (dp->blksize == 0) 1700 dp->blksize = 512; 1701 } else { 1702 struct sd_mode_sense_data scsipi_sense; 1703 int big, bsize; 1704 struct scsi_blk_desc *bdesc; 1705 1706 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1707 error = sd_mode_sense(sd, 0, &scsipi_sense, 1708 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1709 dp->blksize = 512; 1710 if (!error) { 1711 if (big) { 1712 bdesc = (void *)(&scsipi_sense.header.big + 1); 1713 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1714 } else { 1715 bdesc = (void *)(&scsipi_sense.header.small + 1); 1716 bsize = scsipi_sense.header.small.blk_desc_len; 1717 } 1718 1719 #if 0 1720 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1721 printf("page 0 bsize=%d\n", bsize); 1722 printf("page 0 ok\n"); 1723 #endif 1724 1725 if (bsize >= 8) { 1726 dp->blksize = _3btol(bdesc->blklen); 1727 if (dp->blksize == 0) 1728 dp->blksize = 512; 1729 } 1730 } 1731 } 1732 1733 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1734 return (0); 1735 } 1736 1737 static int 1738 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1739 { 1740 struct sd_mode_sense_data scsipi_sense; 1741 int error; 1742 int big, poffset, byte2; 1743 union scsi_disk_pages *pages; 1744 #if 0 1745 int i; 1746 u_int8_t *p; 1747 #endif 1748 1749 byte2 = SMS_DBD; 1750 again: 1751 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1752 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1753 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1754 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1755 flags | XS_CTL_SILENT, &big); 1756 if (error) { 1757 if (byte2 == SMS_DBD) { 1758 /* No result; try once more with DBD off */ 1759 byte2 = 0; 1760 goto again; 1761 } 1762 return (error); 1763 } 1764 1765 if (big) { 1766 poffset = sizeof scsipi_sense.header.big; 1767 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1768 } else { 1769 poffset = sizeof scsipi_sense.header.small; 1770 poffset += scsipi_sense.header.small.blk_desc_len; 1771 } 1772 1773 pages = (void *)((u_long)&scsipi_sense + poffset); 1774 #if 0 1775 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1776 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1777 #endif 1778 1779 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1780 return (ERESTART); 1781 1782 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1783 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1784 _3btol(pages->rigid_geometry.ncyl), 1785 pages->rigid_geometry.nheads, 1786 _2btol(pages->rigid_geometry.st_cyl_wp), 1787 _2btol(pages->rigid_geometry.st_cyl_rwc), 1788 _2btol(pages->rigid_geometry.land_zone))); 1789 1790 /* 1791 * KLUDGE!! (for zone recorded disks) 1792 * give a number of sectors so that sec * trks * cyls 1793 * is <= disk_size 1794 * can lead to wasted space! THINK ABOUT THIS ! 1795 */ 1796 dp->heads = pages->rigid_geometry.nheads; 1797 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1798 if (dp->heads == 0 || dp->cyls == 0) 1799 return (ERESTART); 1800 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1801 1802 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1803 if (dp->rot_rate == 0) 1804 dp->rot_rate = 3600; 1805 1806 #if 0 1807 printf("page 4 ok\n"); 1808 #endif 1809 return (0); 1810 } 1811 1812 static int 1813 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1814 { 1815 struct sd_mode_sense_data scsipi_sense; 1816 int error; 1817 int big, poffset, byte2; 1818 union scsi_disk_pages *pages; 1819 #if 0 1820 int i; 1821 u_int8_t *p; 1822 #endif 1823 1824 byte2 = SMS_DBD; 1825 again: 1826 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1827 error = sd_mode_sense(sd, 0, &scsipi_sense, 1828 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1829 sizeof(scsipi_sense.pages.flex_geometry), 5, 1830 flags | XS_CTL_SILENT, &big); 1831 if (error) { 1832 if (byte2 == SMS_DBD) { 1833 /* No result; try once more with DBD off */ 1834 byte2 = 0; 1835 goto again; 1836 } 1837 return (error); 1838 } 1839 1840 if (big) { 1841 poffset = sizeof scsipi_sense.header.big; 1842 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1843 } else { 1844 poffset = sizeof scsipi_sense.header.small; 1845 poffset += scsipi_sense.header.small.blk_desc_len; 1846 } 1847 1848 pages = (void *)((u_long)&scsipi_sense + poffset); 1849 #if 0 1850 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1851 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1852 #endif 1853 1854 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1855 return (ERESTART); 1856 1857 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1858 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1859 _3btol(pages->flex_geometry.ncyl), 1860 pages->flex_geometry.nheads, 1861 pages->flex_geometry.ph_sec_tr, 1862 _2btol(pages->flex_geometry.bytes_s))); 1863 1864 dp->heads = pages->flex_geometry.nheads; 1865 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1866 dp->sectors = pages->flex_geometry.ph_sec_tr; 1867 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1868 return (ERESTART); 1869 1870 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1871 if (dp->rot_rate == 0) 1872 dp->rot_rate = 3600; 1873 1874 #if 0 1875 printf("page 5 ok\n"); 1876 #endif 1877 return (0); 1878 } 1879 1880 static int 1881 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1882 { 1883 int error; 1884 1885 /* 1886 * If offline, the SDEV_MEDIA_LOADED flag will be 1887 * cleared by the caller if necessary. 1888 */ 1889 if (sd->type == T_SIMPLE_DIRECT) 1890 return (sd_get_simplifiedparms(sd, dp, flags)); 1891 1892 error = sd_get_capacity(sd, dp, flags); 1893 if (error) 1894 return (error); 1895 1896 if (sd->type == T_OPTICAL) 1897 goto page0; 1898 1899 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1900 if (!sd_get_parms_page5(sd, dp, flags) || 1901 !sd_get_parms_page4(sd, dp, flags)) 1902 return (SDGP_RESULT_OK); 1903 } else { 1904 if (!sd_get_parms_page4(sd, dp, flags) || 1905 !sd_get_parms_page5(sd, dp, flags)) 1906 return (SDGP_RESULT_OK); 1907 } 1908 1909 page0: 1910 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1911 /* Try calling driver's method for figuring out geometry. */ 1912 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1913 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1914 (sd->sc_periph, dp, dp->disksize)) { 1915 /* 1916 * Use adaptec standard fictitious geometry 1917 * this depends on which controller (e.g. 1542C is 1918 * different. but we have to put SOMETHING here..) 1919 */ 1920 dp->heads = 64; 1921 dp->sectors = 32; 1922 dp->cyls = dp->disksize / (64 * 32); 1923 } 1924 dp->rot_rate = 3600; 1925 return (SDGP_RESULT_OK); 1926 } 1927 1928 static int 1929 sd_flush(struct sd_softc *sd, int flags) 1930 { 1931 struct scsipi_periph *periph = sd->sc_periph; 1932 struct scsi_synchronize_cache cmd; 1933 1934 /* 1935 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1936 * We issue with address 0 length 0, which should be 1937 * interpreted by the device as "all remaining blocks 1938 * starting at address 0". We ignore ILLEGAL REQUEST 1939 * in the event that the command is not supported by 1940 * the device, and poll for completion so that we know 1941 * that the cache has actually been flushed. 1942 * 1943 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1944 * command, as indicated by our quirks flags. 1945 * 1946 * XXX What about older devices? 1947 */ 1948 if (periph->periph_version < 2 || 1949 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1950 return (0); 1951 1952 sd->flags |= SDF_FLUSHING; 1953 memset(&cmd, 0, sizeof(cmd)); 1954 cmd.opcode = SCSI_SYNCHRONIZE_CACHE; 1955 1956 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1957 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1958 } 1959 1960 static int 1961 sd_getcache(struct sd_softc *sd, int *bitsp) 1962 { 1963 struct scsipi_periph *periph = sd->sc_periph; 1964 struct sd_mode_sense_data scsipi_sense; 1965 int error, bits = 0; 1966 int big; 1967 union scsi_disk_pages *pages; 1968 1969 if (periph->periph_version < 2) 1970 return (EOPNOTSUPP); 1971 1972 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1973 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1974 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1975 if (error) 1976 return (error); 1977 1978 if (big) 1979 pages = (void *)(&scsipi_sense.header.big + 1); 1980 else 1981 pages = (void *)(&scsipi_sense.header.small + 1); 1982 1983 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1984 bits |= DKCACHE_READ; 1985 if (pages->caching_params.flags & CACHING_WCE) 1986 bits |= DKCACHE_WRITE; 1987 if (pages->caching_params.pg_code & PGCODE_PS) 1988 bits |= DKCACHE_SAVE; 1989 1990 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1991 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1992 sizeof(scsipi_sense.pages.caching_params), 1993 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 1994 if (error == 0) { 1995 if (big) 1996 pages = (void *)(&scsipi_sense.header.big + 1); 1997 else 1998 pages = (void *)(&scsipi_sense.header.small + 1); 1999 2000 if (pages->caching_params.flags & CACHING_RCD) 2001 bits |= DKCACHE_RCHANGE; 2002 if (pages->caching_params.flags & CACHING_WCE) 2003 bits |= DKCACHE_WCHANGE; 2004 } 2005 2006 *bitsp = bits; 2007 2008 return (0); 2009 } 2010 2011 static int 2012 sd_setcache(struct sd_softc *sd, int bits) 2013 { 2014 struct scsipi_periph *periph = sd->sc_periph; 2015 struct sd_mode_sense_data scsipi_sense; 2016 int error; 2017 uint8_t oflags, byte2 = 0; 2018 int big; 2019 union scsi_disk_pages *pages; 2020 2021 if (periph->periph_version < 2) 2022 return (EOPNOTSUPP); 2023 2024 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2025 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2026 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2027 if (error) 2028 return (error); 2029 2030 if (big) 2031 pages = (void *)(&scsipi_sense.header.big + 1); 2032 else 2033 pages = (void *)(&scsipi_sense.header.small + 1); 2034 2035 oflags = pages->caching_params.flags; 2036 2037 if (bits & DKCACHE_READ) 2038 pages->caching_params.flags &= ~CACHING_RCD; 2039 else 2040 pages->caching_params.flags |= CACHING_RCD; 2041 2042 if (bits & DKCACHE_WRITE) 2043 pages->caching_params.flags |= CACHING_WCE; 2044 else 2045 pages->caching_params.flags &= ~CACHING_WCE; 2046 2047 if (oflags == pages->caching_params.flags) 2048 return (0); 2049 2050 pages->caching_params.pg_code &= PGCODE_MASK; 2051 2052 if (bits & DKCACHE_SAVE) 2053 byte2 |= SMS_SP; 2054 2055 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2056 sizeof(struct scsipi_mode_page_header) + 2057 pages->caching_params.pg_length, 0, big)); 2058 } 2059
Indexes created Wed Sep 24 05:09:52 GMT 2025