sd.c revision 1.224
1 /* $NetBSD: sd.c,v 1.224 2004/09/17 23:10:51 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003, 2004 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 1.224 2004/09/17 23:10:51 mycroft 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 void sdminphys(struct buf *); 99 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 100 static void sdgetdisklabel(struct sd_softc *); 101 static void sdstart(struct scsipi_periph *); 102 static void sdrestart(void *); 103 static void sddone(struct scsipi_xfer *, int); 104 static void sd_shutdown(void *); 105 static int sd_interpret_sense(struct scsipi_xfer *); 106 107 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 108 int, int *); 109 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int); 111 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 112 int); 113 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 114 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 115 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 116 int); 117 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 118 int); 119 120 static int sd_flush(struct sd_softc *, int); 121 static int sd_getcache(struct sd_softc *, int *); 122 static int sd_setcache(struct sd_softc *, int); 123 124 static int sdmatch(struct device *, struct cfdata *, void *); 125 static void sdattach(struct device *, struct device *, void *); 126 static int sdactivate(struct device *, enum devact); 127 static int sddetach(struct device *, int); 128 129 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 130 sdactivate); 131 132 extern struct cfdriver sd_cd; 133 134 static const struct scsipi_inquiry_pattern sd_patterns[] = { 135 {T_DIRECT, T_FIXED, 136 "", "", ""}, 137 {T_DIRECT, T_REMOV, 138 "", "", ""}, 139 {T_OPTICAL, T_FIXED, 140 "", "", ""}, 141 {T_OPTICAL, T_REMOV, 142 "", "", ""}, 143 {T_SIMPLE_DIRECT, T_FIXED, 144 "", "", ""}, 145 {T_SIMPLE_DIRECT, T_REMOV, 146 "", "", ""}, 147 }; 148 149 static dev_type_open(sdopen); 150 static dev_type_close(sdclose); 151 static dev_type_read(sdread); 152 static dev_type_write(sdwrite); 153 static dev_type_ioctl(sdioctl); 154 static dev_type_strategy(sdstrategy); 155 static dev_type_dump(sddump); 156 static dev_type_size(sdsize); 157 158 const struct bdevsw sd_bdevsw = { 159 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 160 }; 161 162 const struct cdevsw sd_cdevsw = { 163 sdopen, sdclose, sdread, sdwrite, sdioctl, 164 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 165 }; 166 167 static struct dkdriver sddkdriver = { sdstrategy }; 168 169 static const struct scsipi_periphsw sd_switch = { 170 sd_interpret_sense, /* check our error handler first */ 171 sdstart, /* have a queue, served by this */ 172 NULL, /* have no async handler */ 173 sddone, /* deal with stats at interrupt time */ 174 }; 175 176 struct sd_mode_sense_data { 177 /* 178 * XXX 179 * We are not going to parse this as-is -- it just has to be large 180 * enough. 181 */ 182 union { 183 struct scsipi_mode_header small; 184 struct scsipi_mode_header_big big; 185 } header; 186 struct scsi_blk_desc blk_desc; 187 union scsi_disk_pages pages; 188 }; 189 190 /* 191 * The routine called by the low level scsi routine when it discovers 192 * A device suitable for this driver 193 */ 194 static int 195 sdmatch(struct device *parent, struct cfdata *match, void *aux) 196 { 197 struct scsipibus_attach_args *sa = aux; 198 int priority; 199 200 (void)scsipi_inqmatch(&sa->sa_inqbuf, 201 (caddr_t)sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 202 sizeof(sd_patterns[0]), &priority); 203 204 return (priority); 205 } 206 207 /* 208 * Attach routine common to atapi & scsi. 209 */ 210 static void 211 sdattach(struct device *parent, struct device *self, void *aux) 212 { 213 struct sd_softc *sd = (void *)self; 214 struct scsipibus_attach_args *sa = aux; 215 struct scsipi_periph *periph = sa->sa_periph; 216 int error, result; 217 struct disk_parms *dp = &sd->params; 218 char pbuf[9]; 219 220 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 221 222 lockinit(&sd->sc_lock, PRIBIO | PCATCH, "sdlock", 0, 0); 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 /* Nuke the vnodes for any open instances */ 355 for (i = 0; i < MAXPARTITIONS; i++) { 356 mn = SDMINOR(self->dv_unit, i); 357 vdevgone(bmaj, mn, mn, VBLK); 358 vdevgone(cmaj, mn, mn, VCHR); 359 } 360 361 /* kill any pending restart */ 362 callout_stop(&sd->sc_callout); 363 364 s = splbio(); 365 366 /* Kill off any queued buffers. */ 367 while ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 368 bp->b_error = EIO; 369 bp->b_flags |= B_ERROR; 370 bp->b_resid = bp->b_bcount; 371 biodone(bp); 372 } 373 374 bufq_free(&sd->buf_queue); 375 376 /* Kill off any pending commands. */ 377 scsipi_kill_pending(sd->sc_periph); 378 379 splx(s); 380 381 lockmgr(&sd->sc_lock, LK_DRAIN, 0); 382 383 /* Detach from the disk list. */ 384 disk_detach(&sd->sc_dk); 385 386 /* Get rid of the shutdown hook. */ 387 shutdownhook_disestablish(sd->sc_sdhook); 388 389 #if NRND > 0 390 /* Unhook the entropy source. */ 391 rnd_detach_source(&sd->rnd_source); 392 #endif 393 394 return (0); 395 } 396 397 /* 398 * open the device. Make sure the partition info is a up-to-date as can be. 399 */ 400 static int 401 sdopen(dev_t dev, int flag, int fmt, struct proc *p) 402 { 403 struct sd_softc *sd; 404 struct scsipi_periph *periph; 405 struct scsipi_adapter *adapt; 406 int unit, part; 407 int error; 408 409 unit = SDUNIT(dev); 410 if (unit >= sd_cd.cd_ndevs) 411 return (ENXIO); 412 sd = sd_cd.cd_devs[unit]; 413 if (sd == NULL) 414 return (ENXIO); 415 416 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 417 return (ENODEV); 418 419 periph = sd->sc_periph; 420 adapt = periph->periph_channel->chan_adapter; 421 part = SDPART(dev); 422 423 SC_DEBUG(periph, SCSIPI_DB1, 424 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 425 sd_cd.cd_ndevs, part)); 426 427 /* 428 * If this is the first open of this device, add a reference 429 * to the adapter. 430 */ 431 if (sd->sc_dk.dk_openmask == 0 && 432 (error = scsipi_adapter_addref(adapt)) != 0) 433 return (error); 434 435 if ((error = lockmgr(&sd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 436 goto bad4; 437 438 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 439 /* 440 * If any partition is open, but the disk has been invalidated, 441 * disallow further opens of non-raw partition 442 */ 443 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 444 (part != RAW_PART || fmt != S_IFCHR)) { 445 error = EIO; 446 goto bad3; 447 } 448 } else { 449 int silent; 450 451 if (part == RAW_PART && fmt == S_IFCHR) 452 silent = XS_CTL_SILENT; 453 else 454 silent = 0; 455 456 /* Check that it is still responding and ok. */ 457 error = scsipi_test_unit_ready(periph, 458 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 459 silent); 460 461 /* 462 * Start the pack spinning if necessary. Always allow the 463 * raw parition to be opened, for raw IOCTLs. Data transfers 464 * will check for SDEV_MEDIA_LOADED. 465 */ 466 if (error == EIO) { 467 int error2; 468 469 error2 = scsipi_start(periph, SSS_START, silent); 470 switch (error2) { 471 case 0: 472 error = 0; 473 break; 474 case EIO: 475 case EINVAL: 476 break; 477 default: 478 error = error2; 479 break; 480 } 481 } 482 if (error) { 483 if (silent) 484 goto out; 485 goto bad3; 486 } 487 488 periph->periph_flags |= PERIPH_OPEN; 489 490 if (periph->periph_flags & PERIPH_REMOVABLE) { 491 /* Lock the pack in. */ 492 error = scsipi_prevent(periph, PR_PREVENT, 493 XS_CTL_IGNORE_ILLEGAL_REQUEST | 494 XS_CTL_IGNORE_MEDIA_CHANGE); 495 if (error) 496 goto bad; 497 } 498 499 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 500 int param_error; 501 periph->periph_flags |= PERIPH_MEDIA_LOADED; 502 503 /* 504 * Load the physical device parameters. 505 * 506 * Note that if media is present but unformatted, 507 * we allow the open (so that it can be formatted!). 508 * The drive should refuse real I/O, if the media is 509 * unformatted. 510 */ 511 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 512 == SDGP_RESULT_OFFLINE) { 513 error = ENXIO; 514 goto bad2; 515 } 516 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 517 518 /* Load the partition info if not already loaded. */ 519 if (param_error == 0) { 520 sdgetdisklabel(sd); 521 SC_DEBUG(periph, SCSIPI_DB3, 522 ("Disklabel loaded ")); 523 } 524 } 525 } 526 527 /* Check that the partition exists. */ 528 if (part != RAW_PART && 529 (part >= sd->sc_dk.dk_label->d_npartitions || 530 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 531 error = ENXIO; 532 goto bad; 533 } 534 535 out: /* Insure only one open at a time. */ 536 switch (fmt) { 537 case S_IFCHR: 538 sd->sc_dk.dk_copenmask |= (1 << part); 539 break; 540 case S_IFBLK: 541 sd->sc_dk.dk_bopenmask |= (1 << part); 542 break; 543 } 544 sd->sc_dk.dk_openmask = 545 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 546 547 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 548 lockmgr(&sd->sc_lock, LK_RELEASE, NULL); 549 return (0); 550 551 bad2: 552 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 553 554 bad: 555 if (sd->sc_dk.dk_openmask == 0) { 556 if (periph->periph_flags & PERIPH_REMOVABLE) 557 scsipi_prevent(periph, PR_ALLOW, 558 XS_CTL_IGNORE_ILLEGAL_REQUEST | 559 XS_CTL_IGNORE_MEDIA_CHANGE); 560 periph->periph_flags &= ~PERIPH_OPEN; 561 } 562 563 bad3: 564 lockmgr(&sd->sc_lock, LK_RELEASE, NULL); 565 bad4: 566 if (sd->sc_dk.dk_openmask == 0) 567 scsipi_adapter_delref(adapt); 568 return (error); 569 } 570 571 /* 572 * close the device.. only called if we are the LAST occurence of an open 573 * device. Convenient now but usually a pain. 574 */ 575 static int 576 sdclose(dev_t dev, int flag, int fmt, struct proc *p) 577 { 578 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 579 struct scsipi_periph *periph = sd->sc_periph; 580 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 581 int part = SDPART(dev); 582 int error; 583 584 if ((error = lockmgr(&sd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 585 return (error); 586 587 switch (fmt) { 588 case S_IFCHR: 589 sd->sc_dk.dk_copenmask &= ~(1 << part); 590 break; 591 case S_IFBLK: 592 sd->sc_dk.dk_bopenmask &= ~(1 << part); 593 break; 594 } 595 sd->sc_dk.dk_openmask = 596 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 597 598 if (sd->sc_dk.dk_openmask == 0) { 599 /* 600 * If the disk cache needs flushing, and the disk supports 601 * it, do it now. 602 */ 603 if ((sd->flags & SDF_DIRTY) != 0) { 604 if (sd_flush(sd, 0)) { 605 printf("%s: cache synchronization failed\n", 606 sd->sc_dev.dv_xname); 607 sd->flags &= ~SDF_FLUSHING; 608 } else 609 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 610 } 611 612 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 613 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 614 615 scsipi_wait_drain(periph); 616 617 if (periph->periph_flags & PERIPH_REMOVABLE) 618 scsipi_prevent(periph, PR_ALLOW, 619 XS_CTL_IGNORE_ILLEGAL_REQUEST | 620 XS_CTL_IGNORE_NOT_READY); 621 periph->periph_flags &= ~PERIPH_OPEN; 622 623 scsipi_wait_drain(periph); 624 625 scsipi_adapter_delref(adapt); 626 } 627 628 lockmgr(&sd->sc_lock, LK_RELEASE, NULL); 629 return (0); 630 } 631 632 /* 633 * Actually translate the requested transfer into one the physical driver 634 * can understand. The transfer is described by a buf and will include 635 * only one physical transfer. 636 */ 637 static void 638 sdstrategy(struct buf *bp) 639 { 640 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 641 struct scsipi_periph *periph = sd->sc_periph; 642 struct disklabel *lp; 643 daddr_t blkno; 644 int s; 645 boolean_t sector_aligned; 646 647 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 648 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 649 ("%ld bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 650 /* 651 * If the device has been made invalid, error out 652 */ 653 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 654 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 655 if (periph->periph_flags & PERIPH_OPEN) 656 bp->b_error = EIO; 657 else 658 bp->b_error = ENODEV; 659 goto bad; 660 } 661 662 lp = sd->sc_dk.dk_label; 663 664 /* 665 * The transfer must be a whole number of blocks, offset must not be 666 * negative. 667 */ 668 if (lp->d_secsize == DEV_BSIZE) { 669 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 670 } else { 671 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 672 } 673 if (!sector_aligned || bp->b_blkno < 0) { 674 bp->b_error = EINVAL; 675 goto bad; 676 } 677 /* 678 * If it's a null transfer, return immediatly 679 */ 680 if (bp->b_bcount == 0) 681 goto done; 682 683 /* 684 * Do bounds checking, adjust transfer. if error, process. 685 * If end of partition, just return. 686 */ 687 if (SDPART(bp->b_dev) == RAW_PART) { 688 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 689 sd->params.disksize512) <= 0) 690 goto done; 691 } else { 692 if (bounds_check_with_label(&sd->sc_dk, bp, 693 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 694 goto done; 695 } 696 697 /* 698 * Now convert the block number to absolute and put it in 699 * terms of the device's logical block size. 700 */ 701 if (lp->d_secsize == DEV_BSIZE) 702 blkno = bp->b_blkno; 703 else if (lp->d_secsize > DEV_BSIZE) 704 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 705 else 706 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 707 708 if (SDPART(bp->b_dev) != RAW_PART) 709 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 710 711 bp->b_rawblkno = blkno; 712 713 s = splbio(); 714 715 /* 716 * Place it in the queue of disk activities for this disk. 717 * 718 * XXX Only do disksort() if the current operating mode does not 719 * XXX include tagged queueing. 720 */ 721 BUFQ_PUT(&sd->buf_queue, bp); 722 723 /* 724 * Tell the device to get going on the transfer if it's 725 * not doing anything, otherwise just wait for completion 726 */ 727 sdstart(sd->sc_periph); 728 729 splx(s); 730 return; 731 732 bad: 733 bp->b_flags |= B_ERROR; 734 done: 735 /* 736 * Correctly set the buf to indicate a completed xfer 737 */ 738 bp->b_resid = bp->b_bcount; 739 biodone(bp); 740 } 741 742 /* 743 * sdstart looks to see if there is a buf waiting for the device 744 * and that the device is not already busy. If both are true, 745 * It dequeues the buf and creates a scsi command to perform the 746 * transfer in the buf. The transfer request will call scsipi_done 747 * on completion, which will in turn call this routine again 748 * so that the next queued transfer is performed. 749 * The bufs are queued by the strategy routine (sdstrategy) 750 * 751 * This routine is also called after other non-queued requests 752 * have been made of the scsi driver, to ensure that the queue 753 * continues to be drained. 754 * 755 * must be called at the correct (highish) spl level 756 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 757 */ 758 static void 759 sdstart(struct scsipi_periph *periph) 760 { 761 struct sd_softc *sd = (void *)periph->periph_dev; 762 struct disklabel *lp = sd->sc_dk.dk_label; 763 struct buf *bp = 0; 764 struct scsipi_rw_big cmd_big; 765 struct scsi_rw cmd_small; 766 struct scsipi_generic *cmdp; 767 struct scsipi_xfer *xs; 768 int nblks, cmdlen, error, flags; 769 770 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 771 /* 772 * Check if the device has room for another command 773 */ 774 while (periph->periph_active < periph->periph_openings) { 775 /* 776 * there is excess capacity, but a special waits 777 * It'll need the adapter as soon as we clear out of the 778 * way and let it run (user level wait). 779 */ 780 if (periph->periph_flags & PERIPH_WAITING) { 781 periph->periph_flags &= ~PERIPH_WAITING; 782 wakeup((caddr_t)periph); 783 return; 784 } 785 786 /* 787 * If the device has become invalid, abort all the 788 * reads and writes until all files have been closed and 789 * re-opened 790 */ 791 if (__predict_false( 792 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 793 if ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 794 bp->b_error = EIO; 795 bp->b_flags |= B_ERROR; 796 bp->b_resid = bp->b_bcount; 797 biodone(bp); 798 continue; 799 } else { 800 return; 801 } 802 } 803 804 /* 805 * See if there is a buf with work for us to do.. 806 */ 807 if ((bp = BUFQ_PEEK(&sd->buf_queue)) == NULL) 808 return; 809 810 /* 811 * We have a buf, now we should make a command. 812 */ 813 814 if (lp->d_secsize == DEV_BSIZE) 815 nblks = bp->b_bcount >> DEV_BSHIFT; 816 else 817 nblks = howmany(bp->b_bcount, lp->d_secsize); 818 819 /* 820 * Fill out the scsi command. If the transfer will 821 * fit in a "small" cdb, use it. 822 */ 823 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 824 ((nblks & 0xff) == nblks) && 825 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 826 /* 827 * We can fit in a small cdb. 828 */ 829 memset(&cmd_small, 0, sizeof(cmd_small)); 830 cmd_small.opcode = (bp->b_flags & B_READ) ? 831 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 832 _lto3b(bp->b_rawblkno, cmd_small.addr); 833 cmd_small.length = nblks & 0xff; 834 cmdlen = sizeof(cmd_small); 835 cmdp = (struct scsipi_generic *)&cmd_small; 836 } else { 837 /* 838 * Need a large cdb. 839 */ 840 memset(&cmd_big, 0, sizeof(cmd_big)); 841 cmd_big.opcode = (bp->b_flags & B_READ) ? 842 READ_BIG : WRITE_BIG; 843 _lto4b(bp->b_rawblkno, cmd_big.addr); 844 _lto2b(nblks, cmd_big.length); 845 cmdlen = sizeof(cmd_big); 846 cmdp = (struct scsipi_generic *)&cmd_big; 847 } 848 849 /* Instrumentation. */ 850 disk_busy(&sd->sc_dk); 851 852 /* 853 * Mark the disk dirty so that the cache will be 854 * flushed on close. 855 */ 856 if ((bp->b_flags & B_READ) == 0) 857 sd->flags |= SDF_DIRTY; 858 859 /* 860 * Figure out what flags to use. 861 */ 862 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 863 if (bp->b_flags & B_READ) 864 flags |= XS_CTL_DATA_IN; 865 else 866 flags |= XS_CTL_DATA_OUT; 867 868 /* 869 * Call the routine that chats with the adapter. 870 * Note: we cannot sleep as we may be an interrupt 871 */ 872 xs = scsipi_make_xs(periph, cmdp, cmdlen, 873 (u_char *)bp->b_data, bp->b_bcount, 874 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 875 if (__predict_false(xs == NULL)) { 876 /* 877 * out of memory. Keep this buffer in the queue, and 878 * retry later. 879 */ 880 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 881 periph); 882 return; 883 } 884 /* 885 * need to dequeue the buffer before queuing the command, 886 * because cdstart may be called recursively from the 887 * HBA driver 888 */ 889 #ifdef DIAGNOSTIC 890 if (BUFQ_GET(&sd->buf_queue) != bp) 891 panic("sdstart(): dequeued wrong buf"); 892 #else 893 BUFQ_GET(&sd->buf_queue); 894 #endif 895 error = scsipi_command(periph, xs, cmdp, cmdlen, 896 (u_char *)bp->b_data, bp->b_bcount, 897 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 898 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 899 KASSERT(error == 0); 900 } 901 } 902 903 static void 904 sdrestart(void *v) 905 { 906 int s = splbio(); 907 sdstart((struct scsipi_periph *)v); 908 splx(s); 909 } 910 911 static void 912 sddone(struct scsipi_xfer *xs, int error) 913 { 914 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 915 struct buf *bp = xs->bp; 916 917 if (sd->flags & SDF_FLUSHING) { 918 /* Flush completed, no longer dirty. */ 919 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 920 } 921 922 if (bp) { 923 bp->b_error = error; 924 bp->b_resid = xs->resid; 925 if (error) 926 bp->b_flags |= B_ERROR; 927 928 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 929 (bp->b_flags & B_READ)); 930 #if NRND > 0 931 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 932 #endif 933 934 biodone(bp); 935 } 936 } 937 938 static void 939 sdminphys(struct buf *bp) 940 { 941 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 942 long max; 943 944 /* 945 * If the device is ancient, we want to make sure that 946 * the transfer fits into a 6-byte cdb. 947 * 948 * XXX Note that the SCSI-I spec says that 256-block transfers 949 * are allowed in a 6-byte read/write, and are specified 950 * by settng the "length" to 0. However, we're conservative 951 * here, allowing only 255-block transfers in case an 952 * ancient device gets confused by length == 0. A length of 0 953 * in a 10-byte read/write actually means 0 blocks. 954 */ 955 if ((sd->flags & SDF_ANCIENT) && 956 ((sd->sc_periph->periph_flags & 957 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 958 max = sd->sc_dk.dk_label->d_secsize * 0xff; 959 960 if (bp->b_bcount > max) 961 bp->b_bcount = max; 962 } 963 964 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 965 } 966 967 static int 968 sdread(dev_t dev, struct uio *uio, int ioflag) 969 { 970 971 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 972 } 973 974 static int 975 sdwrite(dev_t dev, struct uio *uio, int ioflag) 976 { 977 978 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 979 } 980 981 /* 982 * Perform special action on behalf of the user 983 * Knows about the internals of this device 984 */ 985 static int 986 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 987 { 988 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 989 struct scsipi_periph *periph = sd->sc_periph; 990 int part = SDPART(dev); 991 int error = 0; 992 #ifdef __HAVE_OLD_DISKLABEL 993 struct disklabel *newlabel = NULL; 994 #endif 995 996 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 997 998 /* 999 * If the device is not valid, some IOCTLs can still be 1000 * handled on the raw partition. Check this here. 1001 */ 1002 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1003 switch (cmd) { 1004 case DIOCKLABEL: 1005 case DIOCWLABEL: 1006 case DIOCLOCK: 1007 case DIOCEJECT: 1008 case ODIOCEJECT: 1009 case DIOCGCACHE: 1010 case DIOCSCACHE: 1011 case SCIOCIDENTIFY: 1012 case OSCIOCIDENTIFY: 1013 case SCIOCCOMMAND: 1014 case SCIOCDEBUG: 1015 if (part == RAW_PART) 1016 break; 1017 /* FALLTHROUGH */ 1018 default: 1019 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1020 return (ENODEV); 1021 else 1022 return (EIO); 1023 } 1024 } 1025 1026 switch (cmd) { 1027 case DIOCGDINFO: 1028 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1029 return (0); 1030 1031 #ifdef __HAVE_OLD_DISKLABEL 1032 case ODIOCGDINFO: 1033 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1034 if (newlabel == NULL) 1035 return EIO; 1036 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1037 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1038 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1039 else 1040 error = ENOTTY; 1041 free(newlabel, M_TEMP); 1042 return error; 1043 #endif 1044 1045 case DIOCGPART: 1046 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1047 ((struct partinfo *)addr)->part = 1048 &sd->sc_dk.dk_label->d_partitions[part]; 1049 return (0); 1050 1051 case DIOCWDINFO: 1052 case DIOCSDINFO: 1053 #ifdef __HAVE_OLD_DISKLABEL 1054 case ODIOCWDINFO: 1055 case ODIOCSDINFO: 1056 #endif 1057 { 1058 struct disklabel *lp; 1059 1060 if ((flag & FWRITE) == 0) 1061 return (EBADF); 1062 1063 #ifdef __HAVE_OLD_DISKLABEL 1064 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1065 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1066 if (newlabel == NULL) 1067 return EIO; 1068 memset(newlabel, 0, sizeof newlabel); 1069 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1070 lp = newlabel; 1071 } else 1072 #endif 1073 lp = (struct disklabel *)addr; 1074 1075 if ((error = lockmgr(&sd->sc_lock, LK_EXCLUSIVE, NULL)) != 0) 1076 goto bad; 1077 sd->flags |= SDF_LABELLING; 1078 1079 error = setdisklabel(sd->sc_dk.dk_label, 1080 lp, /*sd->sc_dk.dk_openmask : */0, 1081 sd->sc_dk.dk_cpulabel); 1082 if (error == 0) { 1083 if (cmd == DIOCWDINFO 1084 #ifdef __HAVE_OLD_DISKLABEL 1085 || cmd == ODIOCWDINFO 1086 #endif 1087 ) 1088 error = writedisklabel(SDLABELDEV(dev), 1089 sdstrategy, sd->sc_dk.dk_label, 1090 sd->sc_dk.dk_cpulabel); 1091 } 1092 1093 sd->flags &= ~SDF_LABELLING; 1094 lockmgr(&sd->sc_lock, LK_RELEASE, NULL); 1095 bad: 1096 #ifdef __HAVE_OLD_DISKLABEL 1097 if (newlabel != NULL) 1098 free(newlabel, M_TEMP); 1099 #endif 1100 return (error); 1101 } 1102 1103 case DIOCKLABEL: 1104 if (*(int *)addr) 1105 periph->periph_flags |= PERIPH_KEEP_LABEL; 1106 else 1107 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1108 return (0); 1109 1110 case DIOCWLABEL: 1111 if ((flag & FWRITE) == 0) 1112 return (EBADF); 1113 if (*(int *)addr) 1114 sd->flags |= SDF_WLABEL; 1115 else 1116 sd->flags &= ~SDF_WLABEL; 1117 return (0); 1118 1119 case DIOCLOCK: 1120 return (scsipi_prevent(periph, 1121 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1122 1123 case DIOCEJECT: 1124 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1125 return (ENOTTY); 1126 if (*(int *)addr == 0) { 1127 /* 1128 * Don't force eject: check that we are the only 1129 * partition open. If so, unlock it. 1130 */ 1131 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1132 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1133 sd->sc_dk.dk_openmask) { 1134 error = scsipi_prevent(periph, PR_ALLOW, 1135 XS_CTL_IGNORE_NOT_READY); 1136 if (error) 1137 return (error); 1138 } else { 1139 return (EBUSY); 1140 } 1141 } 1142 /* FALLTHROUGH */ 1143 case ODIOCEJECT: 1144 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1145 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1146 1147 case DIOCGDEFLABEL: 1148 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1149 return (0); 1150 1151 #ifdef __HAVE_OLD_DISKLABEL 1152 case ODIOCGDEFLABEL: 1153 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1154 if (newlabel == NULL) 1155 return EIO; 1156 sdgetdefaultlabel(sd, newlabel); 1157 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1158 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1159 else 1160 error = ENOTTY; 1161 free(newlabel, M_TEMP); 1162 return error; 1163 #endif 1164 1165 case DIOCGCACHE: 1166 return (sd_getcache(sd, (int *) addr)); 1167 1168 case DIOCSCACHE: 1169 if ((flag & FWRITE) == 0) 1170 return (EBADF); 1171 return (sd_setcache(sd, *(int *) addr)); 1172 1173 case DIOCCACHESYNC: 1174 /* 1175 * XXX Do we really need to care about having a writable 1176 * file descriptor here? 1177 */ 1178 if ((flag & FWRITE) == 0) 1179 return (EBADF); 1180 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1181 error = sd_flush(sd, 0); 1182 if (error) 1183 sd->flags &= ~SDF_FLUSHING; 1184 else 1185 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1186 } else 1187 error = 0; 1188 return (error); 1189 1190 default: 1191 if (part != RAW_PART) 1192 return (ENOTTY); 1193 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1194 } 1195 1196 #ifdef DIAGNOSTIC 1197 panic("sdioctl: impossible"); 1198 #endif 1199 } 1200 1201 static void 1202 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1203 { 1204 1205 memset(lp, 0, sizeof(struct disklabel)); 1206 1207 lp->d_secsize = sd->params.blksize; 1208 lp->d_ntracks = sd->params.heads; 1209 lp->d_nsectors = sd->params.sectors; 1210 lp->d_ncylinders = sd->params.cyls; 1211 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1212 1213 switch (scsipi_periph_bustype(sd->sc_periph)) { 1214 case SCSIPI_BUSTYPE_SCSI: 1215 lp->d_type = DTYPE_SCSI; 1216 break; 1217 case SCSIPI_BUSTYPE_ATAPI: 1218 lp->d_type = DTYPE_ATAPI; 1219 break; 1220 } 1221 /* 1222 * XXX 1223 * We could probe the mode pages to figure out what kind of disc it is. 1224 * Is this worthwhile? 1225 */ 1226 strncpy(lp->d_typename, "mydisk", 16); 1227 strncpy(lp->d_packname, "fictitious", 16); 1228 lp->d_secperunit = sd->params.disksize; 1229 lp->d_rpm = sd->params.rot_rate; 1230 lp->d_interleave = 1; 1231 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1232 D_REMOVABLE : 0; 1233 1234 lp->d_partitions[RAW_PART].p_offset = 0; 1235 lp->d_partitions[RAW_PART].p_size = 1236 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1237 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1238 lp->d_npartitions = RAW_PART + 1; 1239 1240 lp->d_magic = DISKMAGIC; 1241 lp->d_magic2 = DISKMAGIC; 1242 lp->d_checksum = dkcksum(lp); 1243 } 1244 1245 1246 /* 1247 * Load the label information on the named device 1248 */ 1249 static void 1250 sdgetdisklabel(struct sd_softc *sd) 1251 { 1252 struct disklabel *lp = sd->sc_dk.dk_label; 1253 const char *errstring; 1254 1255 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1256 1257 sdgetdefaultlabel(sd, lp); 1258 1259 if (lp->d_secpercyl == 0) { 1260 lp->d_secpercyl = 100; 1261 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1262 } 1263 1264 /* 1265 * Call the generic disklabel extraction routine 1266 */ 1267 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1268 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1269 if (errstring) { 1270 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1271 return; 1272 } 1273 } 1274 1275 static void 1276 sd_shutdown(void *arg) 1277 { 1278 struct sd_softc *sd = arg; 1279 1280 /* 1281 * If the disk cache needs to be flushed, and the disk supports 1282 * it, flush it. We're cold at this point, so we poll for 1283 * completion. 1284 */ 1285 if ((sd->flags & SDF_DIRTY) != 0) { 1286 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1287 printf("%s: cache synchronization failed\n", 1288 sd->sc_dev.dv_xname); 1289 sd->flags &= ~SDF_FLUSHING; 1290 } else 1291 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1292 } 1293 } 1294 1295 /* 1296 * Check Errors 1297 */ 1298 static int 1299 sd_interpret_sense(struct scsipi_xfer *xs) 1300 { 1301 struct scsipi_periph *periph = xs->xs_periph; 1302 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1303 struct sd_softc *sd = (void *)periph->periph_dev; 1304 int s, error, retval = EJUSTRETURN; 1305 1306 /* 1307 * If the periph is already recovering, just do the normal 1308 * error processing. 1309 */ 1310 if (periph->periph_flags & PERIPH_RECOVERING) 1311 return (retval); 1312 1313 /* 1314 * If the device is not open yet, let the generic code handle it. 1315 */ 1316 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1317 return (retval); 1318 1319 /* 1320 * If it isn't a extended or extended/deferred error, let 1321 * the generic code handle it. 1322 */ 1323 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1324 (sense->error_code & SSD_ERRCODE) != 0x71) 1325 return (retval); 1326 1327 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1328 sense->add_sense_code == 0x4) { 1329 if (sense->add_sense_code_qual == 0x01) { 1330 /* 1331 * Unit In The Process Of Becoming Ready. 1332 */ 1333 printf("%s: waiting for pack to spin up...\n", 1334 sd->sc_dev.dv_xname); 1335 if (!callout_pending(&periph->periph_callout)) 1336 scsipi_periph_freeze(periph, 1); 1337 callout_reset(&periph->periph_callout, 1338 5 * hz, scsipi_periph_timed_thaw, periph); 1339 retval = ERESTART; 1340 } else if (sense->add_sense_code_qual == 0x02) { 1341 printf("%s: pack is stopped, restarting...\n", 1342 sd->sc_dev.dv_xname); 1343 s = splbio(); 1344 periph->periph_flags |= PERIPH_RECOVERING; 1345 splx(s); 1346 error = scsipi_start(periph, SSS_START, 1347 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1348 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1349 if (error) { 1350 printf("%s: unable to restart pack\n", 1351 sd->sc_dev.dv_xname); 1352 retval = error; 1353 } else 1354 retval = ERESTART; 1355 s = splbio(); 1356 periph->periph_flags &= ~PERIPH_RECOVERING; 1357 splx(s); 1358 } 1359 } 1360 if ((sense->flags & SSD_KEY) == SKEY_MEDIUM_ERROR && 1361 sense->add_sense_code == 0x31 && 1362 sense->add_sense_code_qual == 0x00) { /* maybe for any asq ? */ 1363 /* Medium Format Corrupted */ 1364 retval = EFTYPE; 1365 } 1366 return (retval); 1367 } 1368 1369 1370 static int 1371 sdsize(dev_t dev) 1372 { 1373 struct sd_softc *sd; 1374 int part, unit, omask; 1375 int size; 1376 1377 unit = SDUNIT(dev); 1378 if (unit >= sd_cd.cd_ndevs) 1379 return (-1); 1380 sd = sd_cd.cd_devs[unit]; 1381 if (sd == NULL) 1382 return (-1); 1383 1384 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1385 return (-1); 1386 1387 part = SDPART(dev); 1388 omask = sd->sc_dk.dk_openmask & (1 << part); 1389 1390 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1391 return (-1); 1392 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1393 size = -1; 1394 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1395 size = -1; 1396 else 1397 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1398 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1399 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1400 return (-1); 1401 return (size); 1402 } 1403 1404 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1405 static struct scsipi_xfer sx; 1406 static int sddoingadump; 1407 1408 /* 1409 * dump all of physical memory into the partition specified, starting 1410 * at offset 'dumplo' into the partition. 1411 */ 1412 static int 1413 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1414 { 1415 struct sd_softc *sd; /* disk unit to do the I/O */ 1416 struct disklabel *lp; /* disk's disklabel */ 1417 int unit, part; 1418 int sectorsize; /* size of a disk sector */ 1419 int nsects; /* number of sectors in partition */ 1420 int sectoff; /* sector offset of partition */ 1421 int totwrt; /* total number of sectors left to write */ 1422 int nwrt; /* current number of sectors to write */ 1423 struct scsipi_rw_big cmd; /* write command */ 1424 struct scsipi_xfer *xs; /* ... convenience */ 1425 struct scsipi_periph *periph; 1426 struct scsipi_channel *chan; 1427 1428 /* Check if recursive dump; if so, punt. */ 1429 if (sddoingadump) 1430 return (EFAULT); 1431 1432 /* Mark as active early. */ 1433 sddoingadump = 1; 1434 1435 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1436 part = SDPART(dev); 1437 1438 /* Check for acceptable drive number. */ 1439 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1440 return (ENXIO); 1441 1442 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1443 return (ENODEV); 1444 1445 periph = sd->sc_periph; 1446 chan = periph->periph_channel; 1447 1448 /* Make sure it was initialized. */ 1449 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1450 return (ENXIO); 1451 1452 /* Convert to disk sectors. Request must be a multiple of size. */ 1453 lp = sd->sc_dk.dk_label; 1454 sectorsize = lp->d_secsize; 1455 if ((size % sectorsize) != 0) 1456 return (EFAULT); 1457 totwrt = size / sectorsize; 1458 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1459 1460 nsects = lp->d_partitions[part].p_size; 1461 sectoff = lp->d_partitions[part].p_offset; 1462 1463 /* Check transfer bounds against partition size. */ 1464 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1465 return (EINVAL); 1466 1467 /* Offset block number to start of partition. */ 1468 blkno += sectoff; 1469 1470 xs = &sx; 1471 1472 while (totwrt > 0) { 1473 nwrt = totwrt; /* XXX */ 1474 #ifndef SD_DUMP_NOT_TRUSTED 1475 /* 1476 * Fill out the scsi command 1477 */ 1478 memset(&cmd, 0, sizeof(cmd)); 1479 cmd.opcode = WRITE_BIG; 1480 _lto4b(blkno, cmd.addr); 1481 _lto2b(nwrt, cmd.length); 1482 /* 1483 * Fill out the scsipi_xfer structure 1484 * Note: we cannot sleep as we may be an interrupt 1485 * don't use scsipi_command() as it may want to wait 1486 * for an xs. 1487 */ 1488 memset(xs, 0, sizeof(sx)); 1489 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1490 XS_CTL_DATA_OUT; 1491 xs->xs_status = 0; 1492 xs->xs_periph = periph; 1493 xs->xs_retries = SDRETRIES; 1494 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1495 xs->cmd = (struct scsipi_generic *)&cmd; 1496 xs->cmdlen = sizeof(cmd); 1497 xs->resid = nwrt * sectorsize; 1498 xs->error = XS_NOERROR; 1499 xs->bp = 0; 1500 xs->data = va; 1501 xs->datalen = nwrt * sectorsize; 1502 1503 /* 1504 * Pass all this info to the scsi driver. 1505 */ 1506 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1507 if ((xs->xs_status & XS_STS_DONE) == 0 || 1508 xs->error != XS_NOERROR) 1509 return (EIO); 1510 #else /* SD_DUMP_NOT_TRUSTED */ 1511 /* Let's just talk about this first... */ 1512 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1513 delay(500 * 1000); /* half a second */ 1514 #endif /* SD_DUMP_NOT_TRUSTED */ 1515 1516 /* update block count */ 1517 totwrt -= nwrt; 1518 blkno += nwrt; 1519 va += sectorsize * nwrt; 1520 } 1521 sddoingadump = 0; 1522 return (0); 1523 } 1524 1525 static int 1526 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1527 int page, int flags, int *big) 1528 { 1529 1530 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1531 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1532 *big = 1; 1533 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1534 size + sizeof(struct scsipi_mode_header_big), 1535 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1536 } else { 1537 *big = 0; 1538 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1539 size + sizeof(struct scsipi_mode_header), 1540 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1541 } 1542 } 1543 1544 static int 1545 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1546 int flags, int big) 1547 { 1548 1549 if (big) { 1550 struct scsipi_mode_header_big *header = sense; 1551 1552 _lto2b(0, header->data_length); 1553 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1554 size + sizeof(struct scsipi_mode_header_big), 1555 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1556 } else { 1557 struct scsipi_mode_header *header = sense; 1558 1559 header->data_length = 0; 1560 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1561 size + sizeof(struct scsipi_mode_header), 1562 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1563 } 1564 } 1565 1566 static int 1567 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1568 { 1569 struct { 1570 struct scsipi_mode_header header; 1571 /* no block descriptor */ 1572 u_int8_t pg_code; /* page code (should be 6) */ 1573 u_int8_t pg_length; /* page length (should be 11) */ 1574 u_int8_t wcd; /* bit0: cache disable */ 1575 u_int8_t lbs[2]; /* logical block size */ 1576 u_int8_t size[5]; /* number of log. blocks */ 1577 u_int8_t pp; /* power/performance */ 1578 u_int8_t flags; 1579 u_int8_t resvd; 1580 } scsipi_sense; 1581 u_int64_t sectors; 1582 int error; 1583 1584 /* 1585 * scsipi_size (ie "read capacity") and mode sense page 6 1586 * give the same information. Do both for now, and check 1587 * for consistency. 1588 * XXX probably differs for removable media 1589 */ 1590 dp->blksize = 512; 1591 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1592 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1593 1594 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1595 &scsipi_sense.header, sizeof(scsipi_sense), 1596 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1597 1598 if (error != 0) 1599 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1600 1601 dp->blksize = _2btol(scsipi_sense.lbs); 1602 if (dp->blksize == 0) 1603 dp->blksize = 512; 1604 1605 /* 1606 * Create a pseudo-geometry. 1607 */ 1608 dp->heads = 64; 1609 dp->sectors = 32; 1610 dp->cyls = sectors / (dp->heads * dp->sectors); 1611 dp->disksize = _5btol(scsipi_sense.size); 1612 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1613 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1614 (unsigned long long)dp->disksize, 1615 (unsigned long long)sectors); 1616 dp->disksize = sectors; 1617 } 1618 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1619 1620 return (SDGP_RESULT_OK); 1621 } 1622 1623 /* 1624 * Get the scsi driver to send a full inquiry to the * device and use the 1625 * results to fill out the disk parameter structure. 1626 */ 1627 static int 1628 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1629 { 1630 u_int64_t sectors; 1631 int error; 1632 #if 0 1633 int i; 1634 u_int8_t *p; 1635 #endif 1636 1637 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1638 if (sectors == 0) { 1639 struct scsipi_read_format_capacities cmd; 1640 struct { 1641 struct scsipi_capacity_list_header header; 1642 struct scsipi_capacity_descriptor desc; 1643 } __attribute__((packed)) data; 1644 1645 memset(&cmd, 0, sizeof(cmd)); 1646 memset(&data, 0, sizeof(data)); 1647 cmd.opcode = READ_FORMAT_CAPACITIES; 1648 _lto2b(sizeof(data), cmd.length); 1649 1650 error = scsipi_command(sd->sc_periph, NULL, 1651 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1652 SDRETRIES, 20000, NULL, 1653 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1654 if (error == EFTYPE) { 1655 /* Medium Format Corrupted, handle as not formatted */ 1656 return (SDGP_RESULT_UNFORMATTED); 1657 } 1658 if (error || data.header.length == 0) 1659 return (SDGP_RESULT_OFFLINE); 1660 1661 #if 0 1662 printf("rfc: length=%d\n", data.header.length); 1663 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"); 1664 #endif 1665 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1666 case SCSIPI_CAP_DESC_CODE_RESERVED: 1667 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1668 break; 1669 1670 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1671 return (SDGP_RESULT_UNFORMATTED); 1672 1673 case SCSIPI_CAP_DESC_CODE_NONE: 1674 return (SDGP_RESULT_OFFLINE); 1675 } 1676 1677 dp->disksize = sectors = _4btol(data.desc.nblks); 1678 if (sectors == 0) 1679 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1680 1681 dp->blksize = _3btol(data.desc.blklen); 1682 if (dp->blksize == 0) 1683 dp->blksize = 512; 1684 } else { 1685 struct sd_mode_sense_data scsipi_sense; 1686 int big, bsize; 1687 struct scsi_blk_desc *bdesc; 1688 1689 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1690 error = sd_mode_sense(sd, 0, &scsipi_sense, 1691 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1692 dp->blksize = 512; 1693 if (!error) { 1694 if (big) { 1695 bdesc = (void *)(&scsipi_sense.header.big + 1); 1696 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1697 } else { 1698 bdesc = (void *)(&scsipi_sense.header.small + 1); 1699 bsize = scsipi_sense.header.small.blk_desc_len; 1700 } 1701 1702 #if 0 1703 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1704 printf("page 0 bsize=%d\n", bsize); 1705 printf("page 0 ok\n"); 1706 #endif 1707 1708 if (bsize >= 8) { 1709 dp->blksize = _3btol(bdesc->blklen); 1710 if (dp->blksize == 0) 1711 dp->blksize = 512; 1712 } 1713 } 1714 } 1715 1716 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1717 return (0); 1718 } 1719 1720 static int 1721 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1722 { 1723 struct sd_mode_sense_data scsipi_sense; 1724 int error; 1725 int big, poffset, byte2; 1726 union scsi_disk_pages *pages; 1727 #if 0 1728 int i; 1729 u_int8_t *p; 1730 #endif 1731 1732 byte2 = SMS_DBD; 1733 again: 1734 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1735 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1736 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1737 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1738 flags | XS_CTL_SILENT, &big); 1739 if (error) { 1740 if (byte2 == SMS_DBD) { 1741 /* No result; try once more with DBD off */ 1742 byte2 = 0; 1743 goto again; 1744 } 1745 return (error); 1746 } 1747 1748 if (big) { 1749 poffset = sizeof scsipi_sense.header.big; 1750 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1751 } else { 1752 poffset = sizeof scsipi_sense.header.small; 1753 poffset += scsipi_sense.header.small.blk_desc_len; 1754 } 1755 1756 pages = (void *)((u_long)&scsipi_sense + poffset); 1757 #if 0 1758 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1759 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1760 #endif 1761 1762 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1763 return (ERESTART); 1764 1765 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1766 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1767 _3btol(pages->rigid_geometry.ncyl), 1768 pages->rigid_geometry.nheads, 1769 _2btol(pages->rigid_geometry.st_cyl_wp), 1770 _2btol(pages->rigid_geometry.st_cyl_rwc), 1771 _2btol(pages->rigid_geometry.land_zone))); 1772 1773 /* 1774 * KLUDGE!! (for zone recorded disks) 1775 * give a number of sectors so that sec * trks * cyls 1776 * is <= disk_size 1777 * can lead to wasted space! THINK ABOUT THIS ! 1778 */ 1779 dp->heads = pages->rigid_geometry.nheads; 1780 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1781 if (dp->heads == 0 || dp->cyls == 0) 1782 return (ERESTART); 1783 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1784 1785 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1786 if (dp->rot_rate == 0) 1787 dp->rot_rate = 3600; 1788 1789 #if 0 1790 printf("page 4 ok\n"); 1791 #endif 1792 return (0); 1793 } 1794 1795 static int 1796 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1797 { 1798 struct sd_mode_sense_data scsipi_sense; 1799 int error; 1800 int big, poffset, byte2; 1801 union scsi_disk_pages *pages; 1802 #if 0 1803 int i; 1804 u_int8_t *p; 1805 #endif 1806 1807 byte2 = SMS_DBD; 1808 again: 1809 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1810 error = sd_mode_sense(sd, 0, &scsipi_sense, 1811 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1812 sizeof(scsipi_sense.pages.flex_geometry), 5, 1813 flags | XS_CTL_SILENT, &big); 1814 if (error) { 1815 if (byte2 == SMS_DBD) { 1816 /* No result; try once more with DBD off */ 1817 byte2 = 0; 1818 goto again; 1819 } 1820 return (error); 1821 } 1822 1823 if (big) { 1824 poffset = sizeof scsipi_sense.header.big; 1825 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1826 } else { 1827 poffset = sizeof scsipi_sense.header.small; 1828 poffset += scsipi_sense.header.small.blk_desc_len; 1829 } 1830 1831 pages = (void *)((u_long)&scsipi_sense + poffset); 1832 #if 0 1833 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1834 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1835 #endif 1836 1837 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1838 return (ERESTART); 1839 1840 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1841 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1842 _3btol(pages->flex_geometry.ncyl), 1843 pages->flex_geometry.nheads, 1844 pages->flex_geometry.ph_sec_tr, 1845 _2btol(pages->flex_geometry.bytes_s))); 1846 1847 dp->heads = pages->flex_geometry.nheads; 1848 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1849 dp->sectors = pages->flex_geometry.ph_sec_tr; 1850 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1851 return (ERESTART); 1852 1853 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1854 if (dp->rot_rate == 0) 1855 dp->rot_rate = 3600; 1856 1857 #if 0 1858 printf("page 5 ok\n"); 1859 #endif 1860 return (0); 1861 } 1862 1863 static int 1864 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1865 { 1866 int error; 1867 1868 /* 1869 * If offline, the SDEV_MEDIA_LOADED flag will be 1870 * cleared by the caller if necessary. 1871 */ 1872 if (sd->type == T_SIMPLE_DIRECT) 1873 return (sd_get_simplifiedparms(sd, dp, flags)); 1874 1875 error = sd_get_capacity(sd, dp, flags); 1876 if (error) 1877 return (error); 1878 1879 if (sd->type == T_OPTICAL) 1880 goto page0; 1881 1882 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1883 if (!sd_get_parms_page5(sd, dp, flags) || 1884 !sd_get_parms_page4(sd, dp, flags)) 1885 return (SDGP_RESULT_OK); 1886 } else { 1887 if (!sd_get_parms_page4(sd, dp, flags) || 1888 !sd_get_parms_page5(sd, dp, flags)) 1889 return (SDGP_RESULT_OK); 1890 } 1891 1892 page0: 1893 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1894 /* Try calling driver's method for figuring out geometry. */ 1895 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1896 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1897 (sd->sc_periph, dp, dp->disksize)) { 1898 /* 1899 * Use adaptec standard fictitious geometry 1900 * this depends on which controller (e.g. 1542C is 1901 * different. but we have to put SOMETHING here..) 1902 */ 1903 dp->heads = 64; 1904 dp->sectors = 32; 1905 dp->cyls = dp->disksize / (64 * 32); 1906 } 1907 dp->rot_rate = 3600; 1908 return (SDGP_RESULT_OK); 1909 } 1910 1911 static int 1912 sd_flush(struct sd_softc *sd, int flags) 1913 { 1914 struct scsipi_periph *periph = sd->sc_periph; 1915 struct scsi_synchronize_cache cmd; 1916 1917 /* 1918 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1919 * We issue with address 0 length 0, which should be 1920 * interpreted by the device as "all remaining blocks 1921 * starting at address 0". We ignore ILLEGAL REQUEST 1922 * in the event that the command is not supported by 1923 * the device, and poll for completion so that we know 1924 * that the cache has actually been flushed. 1925 * 1926 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1927 * command, as indicated by our quirks flags. 1928 * 1929 * XXX What about older devices? 1930 */ 1931 if (periph->periph_version < 2 || 1932 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1933 return (0); 1934 1935 sd->flags |= SDF_FLUSHING; 1936 memset(&cmd, 0, sizeof(cmd)); 1937 cmd.opcode = SCSI_SYNCHRONIZE_CACHE; 1938 1939 return (scsipi_command(periph, NULL, (void *)&cmd, sizeof(cmd), 0, 0, 1940 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1941 } 1942 1943 static int 1944 sd_getcache(struct sd_softc *sd, int *bitsp) 1945 { 1946 struct scsipi_periph *periph = sd->sc_periph; 1947 struct sd_mode_sense_data scsipi_sense; 1948 int error, bits = 0; 1949 int big; 1950 union scsi_disk_pages *pages; 1951 1952 if (periph->periph_version < 2) 1953 return (EOPNOTSUPP); 1954 1955 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1956 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1957 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1958 if (error) 1959 return (error); 1960 1961 if (big) 1962 pages = (void *)(&scsipi_sense.header.big + 1); 1963 else 1964 pages = (void *)(&scsipi_sense.header.small + 1); 1965 1966 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1967 bits |= DKCACHE_READ; 1968 if (pages->caching_params.flags & CACHING_WCE) 1969 bits |= DKCACHE_WRITE; 1970 if (pages->caching_params.pg_code & PGCODE_PS) 1971 bits |= DKCACHE_SAVE; 1972 1973 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1974 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1975 sizeof(scsipi_sense.pages.caching_params), 1976 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 1977 if (error == 0) { 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) 1984 bits |= DKCACHE_RCHANGE; 1985 if (pages->caching_params.flags & CACHING_WCE) 1986 bits |= DKCACHE_WCHANGE; 1987 } 1988 1989 *bitsp = bits; 1990 1991 return (0); 1992 } 1993 1994 static int 1995 sd_setcache(struct sd_softc *sd, int bits) 1996 { 1997 struct scsipi_periph *periph = sd->sc_periph; 1998 struct sd_mode_sense_data scsipi_sense; 1999 int error; 2000 uint8_t oflags, byte2 = 0; 2001 int big; 2002 union scsi_disk_pages *pages; 2003 2004 if (periph->periph_version < 2) 2005 return (EOPNOTSUPP); 2006 2007 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2008 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2009 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2010 if (error) 2011 return (error); 2012 2013 if (big) 2014 pages = (void *)(&scsipi_sense.header.big + 1); 2015 else 2016 pages = (void *)(&scsipi_sense.header.small + 1); 2017 2018 oflags = pages->caching_params.flags; 2019 2020 if (bits & DKCACHE_READ) 2021 pages->caching_params.flags &= ~CACHING_RCD; 2022 else 2023 pages->caching_params.flags |= CACHING_RCD; 2024 2025 if (bits & DKCACHE_WRITE) 2026 pages->caching_params.flags |= CACHING_WCE; 2027 else 2028 pages->caching_params.flags &= ~CACHING_WCE; 2029 2030 if (oflags == pages->caching_params.flags) 2031 return (0); 2032 2033 pages->caching_params.pg_code &= PGCODE_MASK; 2034 2035 if (bits & DKCACHE_SAVE) 2036 byte2 |= SMS_SP; 2037 2038 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2039 sizeof(struct scsipi_mode_page_header) + 2040 pages->caching_params.pg_length, 0, big)); 2041 } 2042
Indexes created Tue Sep 23 22:09:46 GMT 2025