sd.c revision 1.324.6.2
1 /* $NetBSD: sd.c,v 1.324.6.2 2021/02/11 12:54:56 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Originally written by Julian Elischer (julian (at) dialix.oz.au) 34 * for TRW Financial Systems for use under the MACH(2.5) operating system. 35 * 36 * TRW Financial Systems, in accordance with their agreement with Carnegie 37 * Mellon University, makes this software available to CMU to distribute 38 * or use in any manner that they see fit as long as this message is kept with 39 * the software. For this reason TFS also grants any other persons or 40 * organisations permission to use or modify this software. 41 * 42 * TFS supplies this software to be publicly redistributed 43 * on the understanding that TFS is not responsible for the correct 44 * functioning of this software in any circumstances. 45 * 46 * Ported to run under 386BSD by Julian Elischer (julian (at) dialix.oz.au) Sept 1992 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.324.6.2 2021/02/11 12:54:56 martin Exp $"); 51 52 #ifdef _KERNEL_OPT 53 #include "opt_scsi.h" 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/file.h> 60 #include <sys/stat.h> 61 #include <sys/ioctl.h> 62 #include <sys/scsiio.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/errno.h> 68 #include <sys/device.h> 69 #include <sys/disklabel.h> 70 #include <sys/disk.h> 71 #include <sys/proc.h> 72 #include <sys/conf.h> 73 #include <sys/vnode.h> 74 75 #include <dev/scsipi/scsi_spc.h> 76 #include <dev/scsipi/scsipi_all.h> 77 #include <dev/scsipi/scsi_all.h> 78 #include <dev/scsipi/scsipi_disk.h> 79 #include <dev/scsipi/scsi_disk.h> 80 #include <dev/scsipi/scsiconf.h> 81 #include <dev/scsipi/scsipi_base.h> 82 #include <dev/scsipi/sdvar.h> 83 84 #include <prop/proplib.h> 85 86 #define SDUNIT(dev) DISKUNIT(dev) 87 #define SDPART(dev) DISKPART(dev) 88 #define SDMINOR(unit, part) DISKMINOR(unit, part) 89 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 90 91 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 92 93 #define SD_DEFAULT_BLKSIZE 512 94 95 static void sdminphys(struct buf *); 96 static void sdstart(struct scsipi_periph *); 97 static void sdrestart(void *); 98 static void sddone(struct scsipi_xfer *, int); 99 static bool sd_suspend(device_t, const pmf_qual_t *); 100 static bool sd_shutdown(device_t, int); 101 static int sd_interpret_sense(struct scsipi_xfer *); 102 static int sd_diskstart(device_t, struct buf *); 103 static int sd_dumpblocks(device_t, void *, daddr_t, int); 104 static void sd_iosize(device_t, int *); 105 static int sd_lastclose(device_t); 106 static int sd_firstopen(device_t, dev_t, int, int); 107 static void sd_label(device_t, struct disklabel *); 108 109 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int, int *); 111 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 112 int); 113 static int sd_validate_blksize(struct scsipi_periph *, int); 114 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 115 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 116 int); 117 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 118 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 119 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 120 int); 121 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 122 int); 123 124 static int sd_flush(struct sd_softc *, int); 125 static int sd_getcache(struct sd_softc *, int *); 126 static int sd_setcache(struct sd_softc *, int); 127 128 static int sdmatch(device_t, cfdata_t, void *); 129 static void sdattach(device_t, device_t, void *); 130 static int sddetach(device_t, int); 131 static void sd_set_geometry(struct sd_softc *); 132 133 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 134 NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 135 136 extern struct cfdriver sd_cd; 137 138 static const struct scsipi_inquiry_pattern sd_patterns[] = { 139 {T_DIRECT, T_FIXED, 140 "", "", ""}, 141 {T_DIRECT, T_REMOV, 142 "", "", ""}, 143 {T_OPTICAL, T_FIXED, 144 "", "", ""}, 145 {T_OPTICAL, T_REMOV, 146 "", "", ""}, 147 {T_SIMPLE_DIRECT, T_FIXED, 148 "", "", ""}, 149 {T_SIMPLE_DIRECT, T_REMOV, 150 "", "", ""}, 151 }; 152 153 static dev_type_open(sdopen); 154 static dev_type_close(sdclose); 155 static dev_type_read(sdread); 156 static dev_type_write(sdwrite); 157 static dev_type_ioctl(sdioctl); 158 static dev_type_strategy(sdstrategy); 159 static dev_type_dump(sddump); 160 static dev_type_size(sdsize); 161 162 const struct bdevsw sd_bdevsw = { 163 .d_open = sdopen, 164 .d_close = sdclose, 165 .d_strategy = sdstrategy, 166 .d_ioctl = sdioctl, 167 .d_dump = sddump, 168 .d_psize = sdsize, 169 .d_discard = nodiscard, 170 .d_flag = D_DISK | D_MPSAFE 171 }; 172 173 const struct cdevsw sd_cdevsw = { 174 .d_open = sdopen, 175 .d_close = sdclose, 176 .d_read = sdread, 177 .d_write = sdwrite, 178 .d_ioctl = sdioctl, 179 .d_stop = nostop, 180 .d_tty = notty, 181 .d_poll = nopoll, 182 .d_mmap = nommap, 183 .d_kqfilter = nokqfilter, 184 .d_discard = nodiscard, 185 .d_flag = D_DISK | D_MPSAFE 186 }; 187 188 static struct dkdriver sddkdriver = { 189 .d_open = sdopen, 190 .d_close = sdclose, 191 .d_strategy = sdstrategy, 192 .d_minphys = sdminphys, 193 .d_diskstart = sd_diskstart, 194 .d_dumpblocks = sd_dumpblocks, 195 .d_iosize = sd_iosize, 196 .d_firstopen = sd_firstopen, 197 .d_lastclose = sd_lastclose, 198 .d_label = sd_label, 199 }; 200 201 static const struct scsipi_periphsw sd_switch = { 202 sd_interpret_sense, /* check our error handler first */ 203 sdstart, /* have a queue, served by this */ 204 NULL, /* have no async handler */ 205 sddone, /* deal with stats at interrupt time */ 206 }; 207 208 struct sd_mode_sense_data { 209 /* 210 * XXX 211 * We are not going to parse this as-is -- it just has to be large 212 * enough. 213 */ 214 union { 215 struct scsi_mode_parameter_header_6 small; 216 struct scsi_mode_parameter_header_10 big; 217 } header; 218 struct scsi_general_block_descriptor blk_desc; 219 union scsi_disk_pages pages; 220 }; 221 222 /* 223 * The routine called by the low level scsi routine when it discovers 224 * A device suitable for this driver 225 */ 226 static int 227 sdmatch(device_t parent, cfdata_t match, 228 void *aux) 229 { 230 struct scsipibus_attach_args *sa = aux; 231 int priority; 232 233 (void)scsipi_inqmatch(&sa->sa_inqbuf, 234 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 235 sizeof(sd_patterns[0]), &priority); 236 237 return (priority); 238 } 239 240 /* 241 * Attach routine common to atapi & scsi. 242 */ 243 static void 244 sdattach(device_t parent, device_t self, void *aux) 245 { 246 struct sd_softc *sd = device_private(self); 247 struct dk_softc *dksc = &sd->sc_dksc; 248 struct scsipibus_attach_args *sa = aux; 249 struct scsipi_periph *periph = sa->sa_periph; 250 int error, result, dtype; 251 struct disk_parms *dp = &sd->params; 252 char pbuf[9]; 253 254 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 255 256 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 257 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 258 259 if (sd->type == T_SIMPLE_DIRECT) 260 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 261 262 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph))) { 263 case SCSIPI_BUSTYPE_SCSI: 264 dtype = DKTYPE_SCSI; 265 if (periph->periph_version == 0) 266 sd->flags |= SDF_ANCIENT; 267 break; 268 case SCSIPI_BUSTYPE_ATAPI: 269 dtype = DKTYPE_ATAPI; 270 break; 271 default: 272 dtype = DKTYPE_UNKNOWN; 273 break; 274 } 275 276 /* Initialize dk and disk structure. */ 277 dk_init(dksc, self, dtype); 278 disk_init(&dksc->sc_dkdev, dksc->sc_xname, &sddkdriver); 279 280 /* Attach dk and disk subsystems */ 281 dk_attach(dksc); 282 disk_attach(&dksc->sc_dkdev); 283 284 bufq_alloc(&dksc->sc_bufq, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 285 286 callout_init(&sd->sc_callout, 0); 287 288 /* 289 * Store information needed to contact our base driver 290 */ 291 sd->sc_periph = periph; 292 293 periph->periph_dev = dksc->sc_dev; 294 periph->periph_switch = &sd_switch; 295 296 /* 297 * Increase our openings to the maximum-per-periph 298 * supported by the adapter. This will either be 299 * clamped down or grown by the adapter if necessary. 300 */ 301 periph->periph_openings = 302 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 303 periph->periph_flags |= PERIPH_GROW_OPENINGS; 304 305 /* 306 * Use the subdriver to request information regarding the drive. 307 */ 308 aprint_naive("\n"); 309 aprint_normal("\n"); 310 311 if (periph->periph_quirks & PQUIRK_START) 312 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 313 314 error = scsipi_test_unit_ready(periph, 315 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 316 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 317 if (error) 318 result = SDGP_RESULT_OFFLINE; 319 else 320 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 321 322 aprint_normal_dev(dksc->sc_dev, ""); 323 switch (result) { 324 case SDGP_RESULT_OK: 325 format_bytes(pbuf, sizeof(pbuf), 326 (u_int64_t)dp->disksize * dp->blksize); 327 aprint_normal( 328 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 329 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 330 (unsigned long long)dp->disksize); 331 break; 332 333 case SDGP_RESULT_OFFLINE: 334 aprint_normal("drive offline"); 335 break; 336 337 case SDGP_RESULT_UNFORMATTED: 338 aprint_normal("unformatted media"); 339 break; 340 341 #ifdef DIAGNOSTIC 342 default: 343 panic("sdattach: unknown result from get_parms"); 344 break; 345 #endif 346 } 347 aprint_normal("\n"); 348 349 /* Discover wedges on this disk. */ 350 dkwedge_discover(&dksc->sc_dkdev); 351 352 /* 353 * Establish a shutdown hook so that we can ensure that 354 * our data has actually made it onto the platter at 355 * shutdown time. Note that this relies on the fact 356 * that the shutdown hooks at the "leaves" of the device tree 357 * are run, first (thus guaranteeing that our hook runs before 358 * our ancestors'). 359 */ 360 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 361 aprint_error_dev(self, "couldn't establish power handler\n"); 362 } 363 364 static int 365 sddetach(device_t self, int flags) 366 { 367 struct sd_softc *sd = device_private(self); 368 struct dk_softc *dksc = &sd->sc_dksc; 369 struct scsipi_periph *periph = sd->sc_periph; 370 struct scsipi_channel *chan = periph->periph_channel; 371 int bmaj, cmaj, i, mn, rc; 372 373 if ((rc = disk_begindetach(&dksc->sc_dkdev, sd_lastclose, self, flags)) != 0) 374 return rc; 375 376 /* locate the major number */ 377 bmaj = bdevsw_lookup_major(&sd_bdevsw); 378 cmaj = cdevsw_lookup_major(&sd_cdevsw); 379 380 /* Nuke the vnodes for any open instances */ 381 for (i = 0; i < MAXPARTITIONS; i++) { 382 mn = SDMINOR(device_unit(self), i); 383 vdevgone(bmaj, mn, mn, VBLK); 384 vdevgone(cmaj, mn, mn, VCHR); 385 } 386 387 /* kill any pending restart */ 388 callout_halt(&sd->sc_callout, NULL); 389 390 dk_drain(dksc); 391 392 /* Kill off any pending commands. */ 393 mutex_enter(chan_mtx(chan)); 394 scsipi_kill_pending(periph); 395 mutex_exit(chan_mtx(chan)); 396 397 bufq_free(dksc->sc_bufq); 398 399 /* Delete all of our wedges. */ 400 dkwedge_delall(&dksc->sc_dkdev); 401 402 /* Detach from the disk list. */ 403 disk_detach(&dksc->sc_dkdev); 404 disk_destroy(&dksc->sc_dkdev); 405 406 dk_detach(dksc); 407 408 callout_destroy(&sd->sc_callout); 409 410 pmf_device_deregister(self); 411 412 return (0); 413 } 414 415 /* 416 * Serialized by caller 417 */ 418 static int 419 sd_firstopen(device_t self, dev_t dev, int flag, int fmt) 420 { 421 struct sd_softc *sd = device_private(self); 422 struct scsipi_periph *periph = sd->sc_periph; 423 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 424 int error, silent; 425 int part, removable; 426 427 part = SDPART(dev); 428 429 error = scsipi_adapter_addref(adapt); 430 if (error) 431 return error; 432 433 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 434 silent = XS_CTL_SILENT; 435 else 436 silent = 0; 437 438 /* Check that it is still responding and ok. */ 439 error = scsipi_test_unit_ready(periph, 440 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 441 silent); 442 443 /* 444 * Start the pack spinning if necessary. Always allow the 445 * raw parition to be opened, for raw IOCTLs. Data transfers 446 * will check for SDEV_MEDIA_LOADED. 447 */ 448 if (error == EIO) { 449 error = scsipi_start(periph, SSS_START, silent); 450 if (error == EINVAL) 451 error = EIO; 452 } 453 if (error) 454 goto bad; 455 456 removable = (periph->periph_flags & PERIPH_REMOVABLE) != 0; 457 if (removable) { 458 /* Lock the pack in. */ 459 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 460 XS_CTL_IGNORE_ILLEGAL_REQUEST | 461 XS_CTL_IGNORE_MEDIA_CHANGE | 462 XS_CTL_SILENT); 463 if (error) 464 goto bad; 465 } 466 467 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 468 int param_error; 469 470 /* 471 * Load the physical device parameters. 472 * 473 * Note that if media is present but unformatted, 474 * we allow the open (so that it can be formatted!). 475 * The drive should refuse real I/O, if the media is 476 * unformatted. 477 */ 478 param_error = sd_get_parms(sd, &sd->params, 0); 479 if (param_error == SDGP_RESULT_OFFLINE) { 480 error = ENXIO; 481 goto bad2; 482 } 483 periph->periph_flags |= PERIPH_MEDIA_LOADED; 484 485 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 486 } 487 488 periph->periph_flags |= PERIPH_OPEN; 489 return 0; 490 491 bad2: 492 if (removable) 493 scsipi_prevent(periph, SPAMR_ALLOW, 494 XS_CTL_IGNORE_ILLEGAL_REQUEST | 495 XS_CTL_IGNORE_MEDIA_CHANGE | 496 XS_CTL_SILENT); 497 498 bad: 499 scsipi_adapter_delref(adapt); 500 return error; 501 } 502 503 /* 504 * open the device. Make sure the partition info is a up-to-date as can be. 505 */ 506 static int 507 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 508 { 509 struct sd_softc *sd; 510 struct dk_softc *dksc; 511 struct scsipi_periph *periph; 512 int unit, part; 513 int error; 514 515 unit = SDUNIT(dev); 516 sd = device_lookup_private(&sd_cd, unit); 517 if (sd == NULL) 518 return (ENXIO); 519 dksc = &sd->sc_dksc; 520 521 if (!device_is_active(dksc->sc_dev)) 522 return (ENODEV); 523 524 periph = sd->sc_periph; 525 part = SDPART(dev); 526 527 SC_DEBUG(periph, SCSIPI_DB1, 528 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", 529 dev, unit, sd_cd.cd_ndevs, SDPART(dev))); 530 531 /* 532 * If any partition is open, but the disk has been invalidated, 533 * disallow further opens of non-raw partition 534 */ 535 if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) == 536 PERIPH_OPEN) { 537 if (part != RAW_PART || fmt != S_IFCHR) 538 return EIO; 539 } 540 541 error = dk_open(dksc, dev, flag, fmt, l); 542 543 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 544 545 return error; 546 } 547 548 /* 549 * Serialized by caller 550 */ 551 static int 552 sd_lastclose(device_t self) 553 { 554 struct sd_softc *sd = device_private(self); 555 struct dk_softc *dksc = &sd->sc_dksc; 556 struct scsipi_periph *periph = sd->sc_periph; 557 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 558 559 /* 560 * If the disk cache needs flushing, and the disk supports 561 * it, do it now. 562 */ 563 if ((sd->flags & SDF_DIRTY) != 0) { 564 if (sd_flush(sd, 0)) { 565 aprint_error_dev(dksc->sc_dev, 566 "cache synchronization failed\n"); 567 sd->flags &= ~SDF_FLUSHING; 568 } else 569 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 570 } 571 572 scsipi_wait_drain(periph); 573 574 if (periph->periph_flags & PERIPH_REMOVABLE) 575 scsipi_prevent(periph, SPAMR_ALLOW, 576 XS_CTL_IGNORE_ILLEGAL_REQUEST | 577 XS_CTL_IGNORE_NOT_READY | 578 XS_CTL_SILENT); 579 periph->periph_flags &= ~PERIPH_OPEN; 580 581 scsipi_wait_drain(periph); 582 583 scsipi_adapter_delref(adapt); 584 585 return 0; 586 } 587 588 /* 589 * close the device.. only called if we are the LAST occurence of an open 590 * device. Convenient now but usually a pain. 591 */ 592 static int 593 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 594 { 595 struct sd_softc *sd; 596 struct dk_softc *dksc; 597 int unit; 598 599 unit = SDUNIT(dev); 600 sd = device_lookup_private(&sd_cd, unit); 601 dksc = &sd->sc_dksc; 602 603 return dk_close(dksc, dev, flag, fmt, l); 604 } 605 606 /* 607 * Actually translate the requested transfer into one the physical driver 608 * can understand. The transfer is described by a buf and will include 609 * only one physical transfer. 610 */ 611 static void 612 sdstrategy(struct buf *bp) 613 { 614 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 615 struct dk_softc *dksc = &sd->sc_dksc; 616 struct scsipi_periph *periph = sd->sc_periph; 617 618 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 619 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 620 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 621 622 /* 623 * If the device has been made invalid, error out 624 */ 625 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 626 !device_is_active(dksc->sc_dev)) { 627 if (periph->periph_flags & PERIPH_OPEN) 628 bp->b_error = EIO; 629 else 630 bp->b_error = ENODEV; 631 632 bp->b_resid = bp->b_bcount; 633 biodone(bp); 634 return; 635 } 636 637 dk_strategy(dksc, bp); 638 } 639 640 /* 641 * Issue single I/O command 642 * 643 * Called from dk_start and implicitely from dk_strategy 644 */ 645 static int 646 sd_diskstart(device_t dev, struct buf *bp) 647 { 648 struct sd_softc *sd = device_private(dev); 649 struct scsipi_periph *periph = sd->sc_periph; 650 struct scsipi_channel *chan = periph->periph_channel; 651 struct scsipi_rw_16 cmd16; 652 struct scsipi_rw_10 cmd_big; 653 struct scsi_rw_6 cmd_small; 654 struct scsipi_generic *cmdp; 655 struct scsipi_xfer *xs; 656 int error, flags, nblks, cmdlen; 657 int cdb_flags; 658 659 mutex_enter(chan_mtx(chan)); 660 661 if (periph->periph_active >= periph->periph_openings) { 662 error = EAGAIN; 663 goto out; 664 } 665 666 /* 667 * there is excess capacity, but a special waits 668 * It'll need the adapter as soon as we clear out of the 669 * way and let it run (user level wait). 670 */ 671 if (periph->periph_flags & PERIPH_WAITING) { 672 periph->periph_flags &= ~PERIPH_WAITING; 673 cv_broadcast(periph_cv_periph(periph)); 674 error = EAGAIN; 675 goto out; 676 } 677 678 /* 679 * If the device has become invalid, abort all the 680 * reads and writes until all files have been closed and 681 * re-opened 682 */ 683 if (__predict_false( 684 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 685 error = EIO; 686 goto out; 687 } 688 689 /* 690 * Mark the disk dirty so that the cache will be 691 * flushed on close. 692 */ 693 if ((bp->b_flags & B_READ) == 0) 694 sd->flags |= SDF_DIRTY; 695 696 if (sd->params.blksize == DEV_BSIZE) 697 nblks = bp->b_bcount >> DEV_BSHIFT; 698 else 699 nblks = howmany(bp->b_bcount, sd->params.blksize); 700 701 /* 702 * Pass FUA and/or DPO if requested. Must be done before CDB 703 * selection, as 6-byte CDB doesn't support the flags. 704 */ 705 cdb_flags = 0; 706 707 if (bp->b_flags & B_MEDIA_FUA) 708 cdb_flags |= SRWB_FUA; 709 710 if (bp->b_flags & B_MEDIA_DPO) 711 cdb_flags |= SRWB_DPO; 712 713 /* 714 * Fill out the scsi command. Use the smallest CDB possible 715 * (6-byte, 10-byte, or 16-byte). If we need FUA or DPO, 716 * need to use 10-byte or bigger, as the 6-byte doesn't support 717 * the flags. 718 */ 719 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 720 ((nblks & 0xff) == nblks) && 721 !(periph->periph_quirks & PQUIRK_ONLYBIG) && 722 !cdb_flags) { 723 /* 6-byte CDB */ 724 memset(&cmd_small, 0, sizeof(cmd_small)); 725 cmd_small.opcode = (bp->b_flags & B_READ) ? 726 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 727 _lto3b(bp->b_rawblkno, cmd_small.addr); 728 cmd_small.length = nblks & 0xff; 729 cmdlen = sizeof(cmd_small); 730 cmdp = (struct scsipi_generic *)&cmd_small; 731 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 732 /* 10-byte CDB */ 733 memset(&cmd_big, 0, sizeof(cmd_big)); 734 cmd_big.opcode = (bp->b_flags & B_READ) ? 735 READ_10 : WRITE_10; 736 _lto4b(bp->b_rawblkno, cmd_big.addr); 737 _lto2b(nblks, cmd_big.length); 738 cmdlen = sizeof(cmd_big); 739 cmdp = (struct scsipi_generic *)&cmd_big; 740 } else { 741 /* 16-byte CDB */ 742 memset(&cmd16, 0, sizeof(cmd16)); 743 cmd16.opcode = (bp->b_flags & B_READ) ? 744 READ_16 : WRITE_16; 745 _lto8b(bp->b_rawblkno, cmd16.addr); 746 _lto4b(nblks, cmd16.length); 747 cmdlen = sizeof(cmd16); 748 cmdp = (struct scsipi_generic *)&cmd16; 749 } 750 751 if (cdb_flags) 752 cmdp->bytes[0] = cdb_flags; 753 754 /* 755 * Figure out what flags to use. 756 */ 757 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 758 if (bp->b_flags & B_READ) 759 flags |= XS_CTL_DATA_IN; 760 else 761 flags |= XS_CTL_DATA_OUT; 762 763 /* 764 * Call the routine that chats with the adapter. 765 * Note: we cannot sleep as we may be an interrupt 766 */ 767 xs = scsipi_make_xs_locked(periph, cmdp, cmdlen, 768 (u_char *)bp->b_data, bp->b_bcount, 769 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 770 if (__predict_false(xs == NULL)) { 771 /* 772 * out of memory. Keep this buffer in the queue, and 773 * retry later. 774 */ 775 callout_reset(&sd->sc_callout, hz / 2, sdrestart, sd); 776 error = EAGAIN; 777 goto out; 778 } 779 780 error = scsipi_execute_xs(xs); 781 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 782 KASSERT(error == 0); 783 784 out: 785 mutex_exit(chan_mtx(chan)); 786 787 return error; 788 } 789 790 /* 791 * Recover I/O request after memory shortage 792 * 793 * Called from callout 794 */ 795 static void 796 sdrestart(void *v) 797 { 798 struct sd_softc *sd = v; 799 struct dk_softc *dksc = &sd->sc_dksc; 800 801 dk_start(dksc, NULL); 802 } 803 804 /* 805 * Recover I/O request after memory shortage 806 * 807 * Called from scsipi midlayer when resources have been freed 808 * with channel lock held 809 */ 810 static void 811 sdstart(struct scsipi_periph *periph) 812 { 813 struct sd_softc *sd = device_private(periph->periph_dev); 814 struct dk_softc *dksc = &sd->sc_dksc; 815 struct scsipi_channel *chan = periph->periph_channel; 816 817 /* 818 * release channel lock as dk_start may need to acquire 819 * other locks 820 * 821 * sdstart is called from scsipi_put_xs and all its callers 822 * release the lock afterwards. So releasing it here 823 * doesn't matter. 824 */ 825 mutex_exit(chan_mtx(chan)); 826 827 dk_start(dksc, NULL); 828 829 mutex_enter(chan_mtx(chan)); 830 } 831 832 static void 833 sddone(struct scsipi_xfer *xs, int error) 834 { 835 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 836 struct dk_softc *dksc = &sd->sc_dksc; 837 struct buf *bp = xs->bp; 838 839 if (sd->flags & SDF_FLUSHING) { 840 /* Flush completed, no longer dirty. */ 841 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 842 } 843 844 if (bp) { 845 bp->b_error = error; 846 bp->b_resid = xs->resid; 847 if (error) { 848 /* on a read/write error bp->b_resid is zero, so fix */ 849 bp->b_resid = bp->b_bcount; 850 } 851 852 dk_done(dksc, bp); 853 /* dk_start is called from scsipi_complete */ 854 } 855 } 856 857 static void 858 sdminphys(struct buf *bp) 859 { 860 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 861 struct dk_softc *dksc = &sd->sc_dksc; 862 long xmax; 863 864 /* 865 * If the device is ancient, we want to make sure that 866 * the transfer fits into a 6-byte cdb. 867 * 868 * XXX Note that the SCSI-I spec says that 256-block transfers 869 * are allowed in a 6-byte read/write, and are specified 870 * by settng the "length" to 0. However, we're conservative 871 * here, allowing only 255-block transfers in case an 872 * ancient device gets confused by length == 0. A length of 0 873 * in a 10-byte read/write actually means 0 blocks. 874 */ 875 if ((sd->flags & SDF_ANCIENT) && 876 ((sd->sc_periph->periph_flags & 877 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 878 xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff; 879 880 if (bp->b_bcount > xmax) 881 bp->b_bcount = xmax; 882 } 883 884 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 885 } 886 887 static void 888 sd_iosize(device_t dev, int *count) 889 { 890 struct buf B; 891 int bmaj; 892 893 bmaj = bdevsw_lookup_major(&sd_bdevsw); 894 B.b_dev = MAKESDDEV(bmaj,device_unit(dev),RAW_PART); 895 B.b_bcount = *count; 896 897 sdminphys(&B); 898 899 *count = B.b_bcount; 900 } 901 902 static int 903 sdread(dev_t dev, struct uio *uio, int ioflag) 904 { 905 906 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 907 } 908 909 static int 910 sdwrite(dev_t dev, struct uio *uio, int ioflag) 911 { 912 913 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 914 } 915 916 /* 917 * Perform special action on behalf of the user 918 * Knows about the internals of this device 919 */ 920 static int 921 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 922 { 923 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 924 struct dk_softc *dksc = &sd->sc_dksc; 925 struct scsipi_periph *periph = sd->sc_periph; 926 927 int part = SDPART(dev); 928 int error; 929 930 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 931 932 /* 933 * If the device is not valid, some IOCTLs can still be 934 * handled on the raw partition. Check this here. 935 */ 936 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 937 part != RAW_PART) 938 return (EIO); 939 940 switch (cmd) { 941 case DIOCLOCK: 942 if (periph->periph_flags & PERIPH_REMOVABLE) 943 return (scsipi_prevent(periph, 944 (*(int *)addr) ? 945 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 946 else 947 return (ENOTTY); 948 949 case DIOCEJECT: 950 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 951 return (ENOTTY); 952 if (*(int *)addr == 0) { 953 int pmask = __BIT(part); 954 /* 955 * Don't force eject: check that we are the only 956 * partition open. If so, unlock it. 957 */ 958 if (DK_BUSY(dksc, pmask) == 0) { 959 error = scsipi_prevent(periph, SPAMR_ALLOW, 960 XS_CTL_IGNORE_NOT_READY); 961 if (error) 962 return (error); 963 } else { 964 return (EBUSY); 965 } 966 } 967 /* FALLTHROUGH */ 968 case ODIOCEJECT: 969 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 970 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 971 972 case DIOCGCACHE: 973 return (sd_getcache(sd, (int *) addr)); 974 975 case DIOCSCACHE: 976 if ((flag & FWRITE) == 0) 977 return (EBADF); 978 return (sd_setcache(sd, *(int *) addr)); 979 980 case DIOCCACHESYNC: 981 /* 982 * XXX Do we really need to care about having a writable 983 * file descriptor here? 984 */ 985 if ((flag & FWRITE) == 0) 986 return (EBADF); 987 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 988 error = sd_flush(sd, 0); 989 if (error) { 990 sd->flags &= ~SDF_FLUSHING; 991 return (error); 992 } 993 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 994 } 995 return (0); 996 997 default: 998 error = dk_ioctl(dksc, dev, cmd, addr, flag, l); 999 if (error == ENOTTY) 1000 error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l); 1001 return (error); 1002 } 1003 1004 #ifdef DIAGNOSTIC 1005 panic("sdioctl: impossible"); 1006 #endif 1007 } 1008 1009 static void 1010 sd_label(device_t self, struct disklabel *lp) 1011 { 1012 struct sd_softc *sd = device_private(self); 1013 1014 strncpy(lp->d_typename, sd->name, 16); 1015 lp->d_rpm = sd->params.rot_rate; 1016 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) 1017 lp->d_flags |= D_REMOVABLE; 1018 } 1019 1020 static bool 1021 sd_shutdown(device_t self, int how) 1022 { 1023 struct sd_softc *sd = device_private(self); 1024 struct dk_softc *dksc = &sd->sc_dksc; 1025 1026 /* 1027 * If the disk cache needs to be flushed, and the disk supports 1028 * it, flush it. We're cold at this point, so we poll for 1029 * completion. 1030 */ 1031 if ((sd->flags & SDF_DIRTY) != 0) { 1032 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1033 aprint_error_dev(dksc->sc_dev, 1034 "cache synchronization failed\n"); 1035 sd->flags &= ~SDF_FLUSHING; 1036 } else 1037 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1038 } 1039 return true; 1040 } 1041 1042 static bool 1043 sd_suspend(device_t dv, const pmf_qual_t *qual) 1044 { 1045 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1046 } 1047 1048 /* 1049 * Check Errors 1050 */ 1051 static int 1052 sd_interpret_sense(struct scsipi_xfer *xs) 1053 { 1054 struct scsipi_periph *periph = xs->xs_periph; 1055 struct scsipi_channel *chan = periph->periph_channel; 1056 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1057 struct sd_softc *sd = device_private(periph->periph_dev); 1058 struct dk_softc *dksc = &sd->sc_dksc; 1059 int error, retval = EJUSTRETURN; 1060 1061 /* 1062 * If the periph is already recovering, just do the normal 1063 * error processing. 1064 */ 1065 if (periph->periph_flags & PERIPH_RECOVERING) 1066 return (retval); 1067 1068 /* 1069 * Ignore errors from accessing illegal fields (e.g. trying to 1070 * lock the door of a digicam, which doesn't have a door that 1071 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1072 */ 1073 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1074 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1075 sense->asc == 0x24 && 1076 sense->ascq == 0x00) { /* Illegal field in CDB */ 1077 if (!(xs->xs_control & XS_CTL_SILENT)) { 1078 scsipi_printaddr(periph); 1079 printf("no door lock\n"); 1080 } 1081 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1082 return (retval); 1083 } 1084 1085 1086 1087 /* 1088 * If the device is not open yet, let the generic code handle it. 1089 */ 1090 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1091 return (retval); 1092 1093 /* 1094 * If it isn't a extended or extended/deferred error, let 1095 * the generic code handle it. 1096 */ 1097 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1098 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1099 return (retval); 1100 1101 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1102 sense->asc == 0x4) { 1103 if (sense->ascq == 0x01) { 1104 /* 1105 * Unit In The Process Of Becoming Ready. 1106 */ 1107 printf("%s: waiting for pack to spin up...\n", 1108 dksc->sc_xname); 1109 if (!callout_pending(&periph->periph_callout)) 1110 scsipi_periph_freeze(periph, 1); 1111 callout_reset(&periph->periph_callout, 1112 5 * hz, scsipi_periph_timed_thaw, periph); 1113 retval = ERESTART; 1114 } else if (sense->ascq == 0x02) { 1115 printf("%s: pack is stopped, restarting...\n", 1116 dksc->sc_xname); 1117 mutex_enter(chan_mtx(chan)); 1118 periph->periph_flags |= PERIPH_RECOVERING; 1119 mutex_exit(chan_mtx(chan)); 1120 error = scsipi_start(periph, SSS_START, 1121 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1122 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1123 if (error) { 1124 aprint_error_dev(dksc->sc_dev, 1125 "unable to restart pack\n"); 1126 retval = error; 1127 } else 1128 retval = ERESTART; 1129 mutex_enter(chan_mtx(chan)); 1130 periph->periph_flags &= ~PERIPH_RECOVERING; 1131 mutex_exit(chan_mtx(chan)); 1132 } 1133 } 1134 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1135 sense->asc == 0x31 && 1136 sense->ascq == 0x00) { /* maybe for any asq ? */ 1137 /* Medium Format Corrupted */ 1138 retval = EFTYPE; 1139 } 1140 return (retval); 1141 } 1142 1143 1144 static int 1145 sdsize(dev_t dev) 1146 { 1147 struct sd_softc *sd; 1148 struct dk_softc *dksc; 1149 int unit; 1150 1151 unit = SDUNIT(dev); 1152 sd = device_lookup_private(&sd_cd, unit); 1153 if (sd == NULL) 1154 return (-1); 1155 dksc = &sd->sc_dksc; 1156 1157 if (!device_is_active(dksc->sc_dev)) 1158 return (-1); 1159 1160 return dk_size(dksc, dev); 1161 } 1162 1163 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1164 static struct scsipi_xfer sx; 1165 1166 /* 1167 * dump all of physical memory into the partition specified, starting 1168 * at offset 'dumplo' into the partition. 1169 */ 1170 static int 1171 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1172 { 1173 struct sd_softc *sd; 1174 struct dk_softc *dksc; 1175 struct scsipi_periph *periph; 1176 int unit; 1177 1178 unit = SDUNIT(dev); 1179 if ((sd = device_lookup_private(&sd_cd, unit)) == NULL) 1180 return (ENXIO); 1181 dksc = &sd->sc_dksc; 1182 1183 if (!device_is_active(dksc->sc_dev)) 1184 return (ENODEV); 1185 1186 periph = sd->sc_periph; 1187 1188 /* Make sure it was initialized. */ 1189 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1190 return (ENXIO); 1191 1192 return dk_dump(dksc, dev, blkno, va, size); 1193 } 1194 1195 static int 1196 sd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1197 { 1198 struct sd_softc *sd = device_private(dev); 1199 struct dk_softc *dksc = &sd->sc_dksc; 1200 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1201 struct scsipi_rw_10 cmd; /* write command */ 1202 struct scsipi_xfer *xs; /* ... convenience */ 1203 struct scsipi_periph *periph; 1204 struct scsipi_channel *chan; 1205 size_t sectorsize; 1206 1207 periph = sd->sc_periph; 1208 chan = periph->periph_channel; 1209 1210 sectorsize = dg->dg_secsize; 1211 1212 xs = &sx; 1213 1214 #ifndef SD_DUMP_NOT_TRUSTED 1215 /* 1216 * Fill out the scsi command 1217 */ 1218 memset(&cmd, 0, sizeof(cmd)); 1219 cmd.opcode = WRITE_10; 1220 _lto4b(blkno, cmd.addr); 1221 _lto2b(nblk, cmd.length); 1222 /* 1223 * Fill out the scsipi_xfer structure 1224 * Note: we cannot sleep as we may be an interrupt 1225 * don't use scsipi_command() as it may want to wait 1226 * for an xs. 1227 */ 1228 memset(xs, 0, sizeof(sx)); 1229 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1230 XS_CTL_DATA_OUT; 1231 xs->xs_status = 0; 1232 xs->xs_periph = periph; 1233 xs->xs_retries = SDRETRIES; 1234 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1235 xs->cmd = (struct scsipi_generic *)&cmd; 1236 xs->cmdlen = sizeof(cmd); 1237 xs->resid = nblk * sectorsize; 1238 xs->error = XS_NOERROR; 1239 xs->bp = 0; 1240 xs->data = va; 1241 xs->datalen = nblk * sectorsize; 1242 callout_init(&xs->xs_callout, 0); 1243 1244 /* 1245 * Pass all this info to the scsi driver. 1246 */ 1247 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1248 if ((xs->xs_status & XS_STS_DONE) == 0 || 1249 xs->error != XS_NOERROR) 1250 return (EIO); 1251 #else /* SD_DUMP_NOT_TRUSTED */ 1252 /* Let's just talk about this first... */ 1253 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1254 delay(500 * 1000); /* half a second */ 1255 #endif /* SD_DUMP_NOT_TRUSTED */ 1256 1257 return (0); 1258 } 1259 1260 static int 1261 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1262 int page, int flags, int *big) 1263 { 1264 1265 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1266 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1267 *big = 1; 1268 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1269 size + sizeof(struct scsi_mode_parameter_header_10), 1270 flags, SDRETRIES, 6000); 1271 } else { 1272 *big = 0; 1273 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1274 size + sizeof(struct scsi_mode_parameter_header_6), 1275 flags, SDRETRIES, 6000); 1276 } 1277 } 1278 1279 static int 1280 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1281 int flags, int big) 1282 { 1283 1284 if (big) { 1285 struct scsi_mode_parameter_header_10 *header = sense; 1286 1287 _lto2b(0, header->data_length); 1288 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1289 size + sizeof(struct scsi_mode_parameter_header_10), 1290 flags, SDRETRIES, 6000); 1291 } else { 1292 struct scsi_mode_parameter_header_6 *header = sense; 1293 1294 header->data_length = 0; 1295 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1296 size + sizeof(struct scsi_mode_parameter_header_6), 1297 flags, SDRETRIES, 6000); 1298 } 1299 } 1300 1301 /* 1302 * sd_validate_blksize: 1303 * 1304 * Validate the block size. Print error if periph is specified, 1305 */ 1306 static int 1307 sd_validate_blksize(struct scsipi_periph *periph, int len) 1308 { 1309 1310 switch (len) { 1311 case 256: 1312 case 512: 1313 case 1024: 1314 case 2048: 1315 case 4096: 1316 return 1; 1317 } 1318 1319 if (periph) { 1320 scsipi_printaddr(periph); 1321 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1322 (len ^ (1 << (ffs(len) - 1))) ? 1323 "preposterous" : "unsupported", 1324 len, SD_DEFAULT_BLKSIZE); 1325 } 1326 1327 return 0; 1328 } 1329 1330 /* 1331 * sd_read_capacity: 1332 * 1333 * Find out from the device what its capacity is. 1334 */ 1335 static u_int64_t 1336 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1337 { 1338 union { 1339 struct scsipi_read_capacity_10 cmd; 1340 struct scsipi_read_capacity_16 cmd16; 1341 } cmd; 1342 union { 1343 struct scsipi_read_capacity_10_data data; 1344 struct scsipi_read_capacity_16_data data16; 1345 } *datap; 1346 uint64_t rv; 1347 1348 memset(&cmd, 0, sizeof(cmd)); 1349 cmd.cmd.opcode = READ_CAPACITY_10; 1350 1351 /* 1352 * Don't allocate data buffer on stack; 1353 * The lower driver layer might use the same stack and 1354 * if it uses region which is in the same cacheline, 1355 * cache flush ops against the data buffer won't work properly. 1356 */ 1357 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1358 if (datap == NULL) 1359 return 0; 1360 1361 /* 1362 * If the command works, interpret the result as a 4 byte 1363 * number of blocks 1364 */ 1365 rv = 0; 1366 memset(datap, 0, sizeof(datap->data)); 1367 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1368 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1369 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1370 goto out; 1371 1372 if (_4btol(datap->data.addr) != 0xffffffff) { 1373 *blksize = _4btol(datap->data.length); 1374 rv = _4btol(datap->data.addr) + 1; 1375 goto out; 1376 } 1377 1378 /* 1379 * Device is larger than can be reflected by READ CAPACITY (10). 1380 * Try READ CAPACITY (16). 1381 */ 1382 1383 memset(&cmd, 0, sizeof(cmd)); 1384 cmd.cmd16.opcode = READ_CAPACITY_16; 1385 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1386 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1387 1388 memset(datap, 0, sizeof(datap->data16)); 1389 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1390 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1391 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1392 goto out; 1393 1394 *blksize = _4btol(datap->data16.length); 1395 rv = _8btol(datap->data16.addr) + 1; 1396 1397 out: 1398 free(datap, M_TEMP); 1399 return rv; 1400 } 1401 1402 static int 1403 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1404 { 1405 struct { 1406 struct scsi_mode_parameter_header_6 header; 1407 /* no block descriptor */ 1408 u_int8_t pg_code; /* page code (should be 6) */ 1409 u_int8_t pg_length; /* page length (should be 11) */ 1410 u_int8_t wcd; /* bit0: cache disable */ 1411 u_int8_t lbs[2]; /* logical block size */ 1412 u_int8_t size[5]; /* number of log. blocks */ 1413 u_int8_t pp; /* power/performance */ 1414 u_int8_t flags; 1415 u_int8_t resvd; 1416 } scsipi_sense; 1417 u_int64_t blocks; 1418 int error, blksize; 1419 1420 /* 1421 * sd_read_capacity (ie "read capacity") and mode sense page 6 1422 * give the same information. Do both for now, and check 1423 * for consistency. 1424 * XXX probably differs for removable media 1425 */ 1426 dp->blksize = SD_DEFAULT_BLKSIZE; 1427 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1428 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1429 1430 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1431 &scsipi_sense.header, sizeof(scsipi_sense), 1432 flags, SDRETRIES, 6000); 1433 1434 if (error != 0) 1435 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1436 1437 dp->blksize = blksize; 1438 if (!sd_validate_blksize(NULL, dp->blksize)) 1439 dp->blksize = _2btol(scsipi_sense.lbs); 1440 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1441 dp->blksize = SD_DEFAULT_BLKSIZE; 1442 1443 /* 1444 * Create a pseudo-geometry. 1445 */ 1446 dp->heads = 64; 1447 dp->sectors = 32; 1448 dp->cyls = blocks / (dp->heads * dp->sectors); 1449 dp->disksize = _5btol(scsipi_sense.size); 1450 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1451 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1452 (unsigned long long)dp->disksize, 1453 (unsigned long long)blocks); 1454 dp->disksize = blocks; 1455 } 1456 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1457 1458 return (SDGP_RESULT_OK); 1459 } 1460 1461 /* 1462 * Get the scsi driver to send a full inquiry to the * device and use the 1463 * results to fill out the disk parameter structure. 1464 */ 1465 static int 1466 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1467 { 1468 u_int64_t blocks; 1469 int error, blksize; 1470 #if 0 1471 int i; 1472 u_int8_t *p; 1473 #endif 1474 1475 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1476 flags); 1477 if (blocks == 0) { 1478 struct scsipi_read_format_capacities cmd; 1479 struct { 1480 struct scsipi_capacity_list_header header; 1481 struct scsipi_capacity_descriptor desc; 1482 } __packed data; 1483 1484 memset(&cmd, 0, sizeof(cmd)); 1485 memset(&data, 0, sizeof(data)); 1486 cmd.opcode = READ_FORMAT_CAPACITIES; 1487 _lto2b(sizeof(data), cmd.length); 1488 1489 error = scsipi_command(sd->sc_periph, 1490 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1491 SDRETRIES, 20000, NULL, 1492 flags | XS_CTL_DATA_IN); 1493 if (error == EFTYPE) { 1494 /* Medium Format Corrupted, handle as not formatted */ 1495 return (SDGP_RESULT_UNFORMATTED); 1496 } 1497 if (error || data.header.length == 0) 1498 return (SDGP_RESULT_OFFLINE); 1499 1500 #if 0 1501 printf("rfc: length=%d\n", data.header.length); 1502 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"); 1503 #endif 1504 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1505 case SCSIPI_CAP_DESC_CODE_RESERVED: 1506 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1507 break; 1508 1509 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1510 return (SDGP_RESULT_UNFORMATTED); 1511 1512 case SCSIPI_CAP_DESC_CODE_NONE: 1513 return (SDGP_RESULT_OFFLINE); 1514 } 1515 1516 dp->disksize = blocks = _4btol(data.desc.nblks); 1517 if (blocks == 0) 1518 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1519 1520 blksize = _3btol(data.desc.blklen); 1521 1522 } else if (!sd_validate_blksize(NULL, blksize)) { 1523 struct sd_mode_sense_data scsipi_sense; 1524 int big, bsize; 1525 struct scsi_general_block_descriptor *bdesc; 1526 1527 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1528 error = sd_mode_sense(sd, 0, &scsipi_sense, 1529 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1530 if (!error) { 1531 if (big) { 1532 bdesc = (void *)(&scsipi_sense.header.big + 1); 1533 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1534 } else { 1535 bdesc = (void *)(&scsipi_sense.header.small + 1); 1536 bsize = scsipi_sense.header.small.blk_desc_len; 1537 } 1538 1539 #if 0 1540 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1541 printf("page 0 bsize=%d\n", bsize); 1542 printf("page 0 ok\n"); 1543 #endif 1544 1545 if (bsize >= 8) { 1546 blksize = _3btol(bdesc->blklen); 1547 } 1548 } 1549 } 1550 1551 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1552 blksize = SD_DEFAULT_BLKSIZE; 1553 1554 dp->blksize = blksize; 1555 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1556 return (0); 1557 } 1558 1559 static int 1560 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1561 { 1562 struct sd_mode_sense_data scsipi_sense; 1563 int error; 1564 int big, byte2; 1565 size_t poffset; 1566 union scsi_disk_pages *pages; 1567 1568 byte2 = SMS_DBD; 1569 again: 1570 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1571 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1572 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1573 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1574 flags | XS_CTL_SILENT, &big); 1575 if (error) { 1576 if (byte2 == SMS_DBD) { 1577 /* No result; try once more with DBD off */ 1578 byte2 = 0; 1579 goto again; 1580 } 1581 return (error); 1582 } 1583 1584 if (big) { 1585 poffset = sizeof scsipi_sense.header.big; 1586 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1587 } else { 1588 poffset = sizeof scsipi_sense.header.small; 1589 poffset += scsipi_sense.header.small.blk_desc_len; 1590 } 1591 1592 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1593 return ERESTART; 1594 1595 pages = (void *)((u_long)&scsipi_sense + poffset); 1596 #if 0 1597 { 1598 size_t i; 1599 u_int8_t *p; 1600 1601 printf("page 4 sense:"); 1602 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1603 i--, p++) 1604 printf(" %02x", *p); 1605 printf("\n"); 1606 printf("page 4 pg_code=%d sense=%p/%p\n", 1607 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1608 } 1609 #endif 1610 1611 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1612 return (ERESTART); 1613 1614 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1615 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1616 _3btol(pages->rigid_geometry.ncyl), 1617 pages->rigid_geometry.nheads, 1618 _2btol(pages->rigid_geometry.st_cyl_wp), 1619 _2btol(pages->rigid_geometry.st_cyl_rwc), 1620 _2btol(pages->rigid_geometry.land_zone))); 1621 1622 /* 1623 * KLUDGE!! (for zone recorded disks) 1624 * give a number of sectors so that sec * trks * cyls 1625 * is <= disk_size 1626 * can lead to wasted space! THINK ABOUT THIS ! 1627 */ 1628 dp->heads = pages->rigid_geometry.nheads; 1629 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1630 if (dp->heads == 0 || dp->cyls == 0) 1631 return (ERESTART); 1632 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1633 1634 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1635 if (dp->rot_rate == 0) 1636 dp->rot_rate = 3600; 1637 1638 #if 0 1639 printf("page 4 ok\n"); 1640 #endif 1641 return (0); 1642 } 1643 1644 static int 1645 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1646 { 1647 struct sd_mode_sense_data scsipi_sense; 1648 int error; 1649 int big, byte2; 1650 size_t poffset; 1651 union scsi_disk_pages *pages; 1652 1653 byte2 = SMS_DBD; 1654 again: 1655 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1656 error = sd_mode_sense(sd, 0, &scsipi_sense, 1657 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1658 sizeof(scsipi_sense.pages.flex_geometry), 5, 1659 flags | XS_CTL_SILENT, &big); 1660 if (error) { 1661 if (byte2 == SMS_DBD) { 1662 /* No result; try once more with DBD off */ 1663 byte2 = 0; 1664 goto again; 1665 } 1666 return (error); 1667 } 1668 1669 if (big) { 1670 poffset = sizeof scsipi_sense.header.big; 1671 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1672 } else { 1673 poffset = sizeof scsipi_sense.header.small; 1674 poffset += scsipi_sense.header.small.blk_desc_len; 1675 } 1676 1677 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 1678 return ERESTART; 1679 1680 pages = (void *)((u_long)&scsipi_sense + poffset); 1681 #if 0 1682 { 1683 size_t i; 1684 u_int8_t *p; 1685 1686 printf("page 5 sense:"); 1687 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1688 i--, p++) 1689 printf(" %02x", *p); 1690 printf("\n"); 1691 printf("page 5 pg_code=%d sense=%p/%p\n", 1692 pages->flex_geometry.pg_code, &scsipi_sense, pages); 1693 } 1694 #endif 1695 1696 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1697 return (ERESTART); 1698 1699 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1700 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1701 _3btol(pages->flex_geometry.ncyl), 1702 pages->flex_geometry.nheads, 1703 pages->flex_geometry.ph_sec_tr, 1704 _2btol(pages->flex_geometry.bytes_s))); 1705 1706 dp->heads = pages->flex_geometry.nheads; 1707 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1708 dp->sectors = pages->flex_geometry.ph_sec_tr; 1709 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1710 return (ERESTART); 1711 1712 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1713 if (dp->rot_rate == 0) 1714 dp->rot_rate = 3600; 1715 1716 #if 0 1717 printf("page 5 ok\n"); 1718 #endif 1719 return (0); 1720 } 1721 1722 static int 1723 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1724 { 1725 struct dk_softc *dksc = &sd->sc_dksc; 1726 int error; 1727 1728 /* 1729 * If offline, the SDEV_MEDIA_LOADED flag will be 1730 * cleared by the caller if necessary. 1731 */ 1732 if (sd->type == T_SIMPLE_DIRECT) { 1733 error = sd_get_simplifiedparms(sd, dp, flags); 1734 if (!error) 1735 goto setprops; 1736 return (error); 1737 } 1738 1739 error = sd_get_capacity(sd, dp, flags); 1740 if (error) 1741 return (error); 1742 1743 if (sd->type == T_OPTICAL) 1744 goto page0; 1745 1746 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1747 if (!sd_get_parms_page5(sd, dp, flags) || 1748 !sd_get_parms_page4(sd, dp, flags)) 1749 goto setprops; 1750 } else { 1751 if (!sd_get_parms_page4(sd, dp, flags) || 1752 !sd_get_parms_page5(sd, dp, flags)) 1753 goto setprops; 1754 } 1755 1756 page0: 1757 printf("%s: fabricating a geometry\n", dksc->sc_xname); 1758 /* Try calling driver's method for figuring out geometry. */ 1759 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1760 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1761 (sd->sc_periph, dp, dp->disksize)) { 1762 /* 1763 * Use adaptec standard fictitious geometry 1764 * this depends on which controller (e.g. 1542C is 1765 * different. but we have to put SOMETHING here..) 1766 */ 1767 dp->heads = 64; 1768 dp->sectors = 32; 1769 dp->cyls = dp->disksize / (64 * 32); 1770 } 1771 dp->rot_rate = 3600; 1772 1773 setprops: 1774 sd_set_geometry(sd); 1775 1776 return (SDGP_RESULT_OK); 1777 } 1778 1779 static int 1780 sd_flush(struct sd_softc *sd, int flags) 1781 { 1782 struct scsipi_periph *periph = sd->sc_periph; 1783 struct scsi_synchronize_cache_10 cmd; 1784 1785 /* 1786 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1787 * We issue with address 0 length 0, which should be 1788 * interpreted by the device as "all remaining blocks 1789 * starting at address 0". We ignore ILLEGAL REQUEST 1790 * in the event that the command is not supported by 1791 * the device, and poll for completion so that we know 1792 * that the cache has actually been flushed. 1793 * 1794 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1795 * command, as indicated by our quirks flags. 1796 * 1797 * XXX What about older devices? 1798 */ 1799 if (periph->periph_version < 2 || 1800 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1801 return (0); 1802 1803 sd->flags |= SDF_FLUSHING; 1804 memset(&cmd, 0, sizeof(cmd)); 1805 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1806 1807 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1808 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1809 } 1810 1811 static int 1812 sd_getcache(struct sd_softc *sd, int *bitsp) 1813 { 1814 struct scsipi_periph *periph = sd->sc_periph; 1815 struct sd_mode_sense_data scsipi_sense; 1816 int error, bits = 0; 1817 int big; 1818 union scsi_disk_pages *pages; 1819 uint8_t dev_spec; 1820 1821 /* only SCSI-2 and later supported */ 1822 if (periph->periph_version < 2) 1823 return (EOPNOTSUPP); 1824 1825 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1826 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1827 sizeof(scsipi_sense.pages.caching_params), 8, XS_CTL_SILENT, &big); 1828 if (error) 1829 return (error); 1830 1831 if (big) { 1832 pages = (void *)(&scsipi_sense.header.big + 1); 1833 dev_spec = scsipi_sense.header.big.dev_spec; 1834 } else { 1835 pages = (void *)(&scsipi_sense.header.small + 1); 1836 dev_spec = scsipi_sense.header.small.dev_spec; 1837 } 1838 1839 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1840 bits |= DKCACHE_READ; 1841 if (pages->caching_params.flags & CACHING_WCE) 1842 bits |= DKCACHE_WRITE; 1843 if (pages->caching_params.pg_code & PGCODE_PS) 1844 bits |= DKCACHE_SAVE; 1845 1846 /* 1847 * Support for FUA/DPO, defined starting with SCSI-2. Use only 1848 * if device claims to support it, according to the MODE SENSE. 1849 */ 1850 if (ISSET(dev_spec, SMH_DSP_DPOFUA)) 1851 bits |= DKCACHE_FUA | DKCACHE_DPO; 1852 1853 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1854 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1855 sizeof(scsipi_sense.pages.caching_params), 1856 SMS_PCTRL_CHANGEABLE|8, XS_CTL_SILENT, &big); 1857 if (error == 0) { 1858 if (big) 1859 pages = (void *)(&scsipi_sense.header.big + 1); 1860 else 1861 pages = (void *)(&scsipi_sense.header.small + 1); 1862 1863 if (pages->caching_params.flags & CACHING_RCD) 1864 bits |= DKCACHE_RCHANGE; 1865 if (pages->caching_params.flags & CACHING_WCE) 1866 bits |= DKCACHE_WCHANGE; 1867 } 1868 1869 *bitsp = bits; 1870 1871 return (0); 1872 } 1873 1874 static int 1875 sd_setcache(struct sd_softc *sd, int bits) 1876 { 1877 struct scsipi_periph *periph = sd->sc_periph; 1878 struct sd_mode_sense_data scsipi_sense; 1879 int error; 1880 uint8_t oflags, byte2 = 0; 1881 int big; 1882 union scsi_disk_pages *pages; 1883 1884 if (periph->periph_version < 2) 1885 return (EOPNOTSUPP); 1886 1887 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1888 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1889 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1890 if (error) 1891 return (error); 1892 1893 if (big) 1894 pages = (void *)(&scsipi_sense.header.big + 1); 1895 else 1896 pages = (void *)(&scsipi_sense.header.small + 1); 1897 1898 oflags = pages->caching_params.flags; 1899 1900 if (bits & DKCACHE_READ) 1901 pages->caching_params.flags &= ~CACHING_RCD; 1902 else 1903 pages->caching_params.flags |= CACHING_RCD; 1904 1905 if (bits & DKCACHE_WRITE) 1906 pages->caching_params.flags |= CACHING_WCE; 1907 else 1908 pages->caching_params.flags &= ~CACHING_WCE; 1909 1910 if (oflags == pages->caching_params.flags) 1911 return (0); 1912 1913 pages->caching_params.pg_code &= PGCODE_MASK; 1914 1915 if (bits & DKCACHE_SAVE) 1916 byte2 |= SMS_SP; 1917 1918 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 1919 sizeof(struct scsi_mode_page_header) + 1920 pages->caching_params.pg_length, 0, big)); 1921 } 1922 1923 static void 1924 sd_set_geometry(struct sd_softc *sd) 1925 { 1926 struct dk_softc *dksc = &sd->sc_dksc; 1927 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1928 1929 memset(dg, 0, sizeof(*dg)); 1930 1931 dg->dg_secperunit = sd->params.disksize; 1932 dg->dg_secsize = sd->params.blksize; 1933 dg->dg_nsectors = sd->params.sectors; 1934 dg->dg_ntracks = sd->params.heads; 1935 dg->dg_ncylinders = sd->params.cyls; 1936 1937 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, NULL); 1938 } 1939
Indexes created Sat Sep 27 14:09:57 GMT 2025