sd.c revision 1.325.4.1
1 /* $NetBSD: sd.c,v 1.325.4.1 2018/10/20 06:58:43 pgoyette 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 1.325.4.1 2018/10/20 06:58:43 pgoyette 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 bool havefua = !(periph->periph_quirks & PQUIRK_NOFUA); 659 660 mutex_enter(chan_mtx(chan)); 661 662 if (periph->periph_active >= periph->periph_openings) { 663 error = EAGAIN; 664 goto out; 665 } 666 667 /* 668 * there is excess capacity, but a special waits 669 * It'll need the adapter as soon as we clear out of the 670 * way and let it run (user level wait). 671 */ 672 if (periph->periph_flags & PERIPH_WAITING) { 673 periph->periph_flags &= ~PERIPH_WAITING; 674 cv_broadcast(periph_cv_periph(periph)); 675 error = EAGAIN; 676 goto out; 677 } 678 679 /* 680 * If the device has become invalid, abort all the 681 * reads and writes until all files have been closed and 682 * re-opened 683 */ 684 if (__predict_false( 685 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 686 error = EIO; 687 goto out; 688 } 689 690 /* 691 * Mark the disk dirty so that the cache will be 692 * flushed on close. 693 */ 694 if ((bp->b_flags & B_READ) == 0) 695 sd->flags |= SDF_DIRTY; 696 697 if (sd->params.blksize == DEV_BSIZE) 698 nblks = bp->b_bcount >> DEV_BSHIFT; 699 else 700 nblks = howmany(bp->b_bcount, sd->params.blksize); 701 702 /* 703 * Pass FUA and/or DPO if requested. Must be done before CDB 704 * selection, as 6-byte CDB doesn't support the flags. 705 */ 706 cdb_flags = 0; 707 if (havefua) { 708 if (bp->b_flags & B_MEDIA_FUA) 709 cdb_flags |= SRWB_FUA; 710 711 if (bp->b_flags & B_MEDIA_DPO) 712 cdb_flags |= SRWB_DPO; 713 } 714 715 /* 716 * Fill out the scsi command. Use the smallest CDB possible 717 * (6-byte, 10-byte, or 16-byte). If we need FUA or DPO, 718 * need to use 10-byte or bigger, as the 6-byte doesn't support 719 * the flags. 720 */ 721 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 722 ((nblks & 0xff) == nblks) && 723 !(periph->periph_quirks & PQUIRK_ONLYBIG) && 724 !cdb_flags) { 725 /* 6-byte CDB */ 726 memset(&cmd_small, 0, sizeof(cmd_small)); 727 cmd_small.opcode = (bp->b_flags & B_READ) ? 728 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 729 _lto3b(bp->b_rawblkno, cmd_small.addr); 730 cmd_small.length = nblks & 0xff; 731 cmdlen = sizeof(cmd_small); 732 cmdp = (struct scsipi_generic *)&cmd_small; 733 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 734 /* 10-byte CDB */ 735 memset(&cmd_big, 0, sizeof(cmd_big)); 736 cmd_big.opcode = (bp->b_flags & B_READ) ? 737 READ_10 : WRITE_10; 738 _lto4b(bp->b_rawblkno, cmd_big.addr); 739 _lto2b(nblks, cmd_big.length); 740 cmdlen = sizeof(cmd_big); 741 cmdp = (struct scsipi_generic *)&cmd_big; 742 } else { 743 /* 16-byte CDB */ 744 memset(&cmd16, 0, sizeof(cmd16)); 745 cmd16.opcode = (bp->b_flags & B_READ) ? 746 READ_16 : WRITE_16; 747 _lto8b(bp->b_rawblkno, cmd16.addr); 748 _lto4b(nblks, cmd16.length); 749 cmdlen = sizeof(cmd16); 750 cmdp = (struct scsipi_generic *)&cmd16; 751 } 752 753 if (cdb_flags) 754 cmdp->bytes[0] = cdb_flags; 755 756 /* 757 * Figure out what flags to use. 758 */ 759 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 760 if (bp->b_flags & B_READ) 761 flags |= XS_CTL_DATA_IN; 762 else 763 flags |= XS_CTL_DATA_OUT; 764 765 /* 766 * Call the routine that chats with the adapter. 767 * Note: we cannot sleep as we may be an interrupt 768 */ 769 xs = scsipi_make_xs_locked(periph, cmdp, cmdlen, 770 (u_char *)bp->b_data, bp->b_bcount, 771 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 772 if (__predict_false(xs == NULL)) { 773 /* 774 * out of memory. Keep this buffer in the queue, and 775 * retry later. 776 */ 777 callout_reset(&sd->sc_callout, hz / 2, sdrestart, sd); 778 error = EAGAIN; 779 goto out; 780 } 781 782 error = scsipi_execute_xs(xs); 783 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 784 KASSERT(error == 0); 785 786 out: 787 mutex_exit(chan_mtx(chan)); 788 789 return error; 790 } 791 792 /* 793 * Recover I/O request after memory shortage 794 * 795 * Called from callout 796 */ 797 static void 798 sdrestart(void *v) 799 { 800 struct sd_softc *sd = v; 801 struct dk_softc *dksc = &sd->sc_dksc; 802 803 dk_start(dksc, NULL); 804 } 805 806 /* 807 * Recover I/O request after memory shortage 808 * 809 * Called from scsipi midlayer when resources have been freed 810 * with channel lock held 811 */ 812 static void 813 sdstart(struct scsipi_periph *periph) 814 { 815 struct sd_softc *sd = device_private(periph->periph_dev); 816 struct dk_softc *dksc = &sd->sc_dksc; 817 struct scsipi_channel *chan = periph->periph_channel; 818 819 /* 820 * release channel lock as dk_start may need to acquire 821 * other locks 822 * 823 * sdstart is called from scsipi_put_xs and all its callers 824 * release the lock afterwards. So releasing it here 825 * doesn't matter. 826 */ 827 mutex_exit(chan_mtx(chan)); 828 829 dk_start(dksc, NULL); 830 831 mutex_enter(chan_mtx(chan)); 832 } 833 834 static void 835 sddone(struct scsipi_xfer *xs, int error) 836 { 837 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 838 struct dk_softc *dksc = &sd->sc_dksc; 839 struct buf *bp = xs->bp; 840 841 if (sd->flags & SDF_FLUSHING) { 842 /* Flush completed, no longer dirty. */ 843 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 844 } 845 846 if (bp) { 847 bp->b_error = error; 848 bp->b_resid = xs->resid; 849 if (error) { 850 /* on a read/write error bp->b_resid is zero, so fix */ 851 bp->b_resid = bp->b_bcount; 852 } 853 854 dk_done(dksc, bp); 855 /* dk_start is called from scsipi_complete */ 856 } 857 } 858 859 static void 860 sdminphys(struct buf *bp) 861 { 862 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 863 struct dk_softc *dksc = &sd->sc_dksc; 864 long xmax; 865 866 /* 867 * If the device is ancient, we want to make sure that 868 * the transfer fits into a 6-byte cdb. 869 * 870 * XXX Note that the SCSI-I spec says that 256-block transfers 871 * are allowed in a 6-byte read/write, and are specified 872 * by settng the "length" to 0. However, we're conservative 873 * here, allowing only 255-block transfers in case an 874 * ancient device gets confused by length == 0. A length of 0 875 * in a 10-byte read/write actually means 0 blocks. 876 */ 877 if ((sd->flags & SDF_ANCIENT) && 878 ((sd->sc_periph->periph_flags & 879 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 880 xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff; 881 882 if (bp->b_bcount > xmax) 883 bp->b_bcount = xmax; 884 } 885 886 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 887 } 888 889 static void 890 sd_iosize(device_t dev, int *count) 891 { 892 struct buf B; 893 int bmaj; 894 895 bmaj = bdevsw_lookup_major(&sd_bdevsw); 896 B.b_dev = MAKESDDEV(bmaj,device_unit(dev),RAW_PART); 897 B.b_bcount = *count; 898 899 sdminphys(&B); 900 901 *count = B.b_bcount; 902 } 903 904 static int 905 sdread(dev_t dev, struct uio *uio, int ioflag) 906 { 907 908 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 909 } 910 911 static int 912 sdwrite(dev_t dev, struct uio *uio, int ioflag) 913 { 914 915 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 916 } 917 918 /* 919 * Perform special action on behalf of the user 920 * Knows about the internals of this device 921 */ 922 static int 923 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 924 { 925 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 926 struct dk_softc *dksc = &sd->sc_dksc; 927 struct scsipi_periph *periph = sd->sc_periph; 928 929 int part = SDPART(dev); 930 int error; 931 932 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 933 934 /* 935 * If the device is not valid, some IOCTLs can still be 936 * handled on the raw partition. Check this here. 937 */ 938 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 939 part != RAW_PART) 940 return (EIO); 941 942 switch (cmd) { 943 case DIOCLOCK: 944 if (periph->periph_flags & PERIPH_REMOVABLE) 945 return (scsipi_prevent(periph, 946 (*(int *)addr) ? 947 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 948 else 949 return (ENOTTY); 950 951 case DIOCEJECT: 952 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 953 return (ENOTTY); 954 if (*(int *)addr == 0) { 955 /* 956 * Don't force eject: check that we are the only 957 * partition open. If so, unlock it. 958 */ 959 if (DK_BUSY(dksc, part) == 0) { 960 error = scsipi_prevent(periph, SPAMR_ALLOW, 961 XS_CTL_IGNORE_NOT_READY); 962 if (error) 963 return (error); 964 } else { 965 return (EBUSY); 966 } 967 } 968 /* FALLTHROUGH */ 969 case ODIOCEJECT: 970 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 971 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 972 973 case DIOCGCACHE: 974 return (sd_getcache(sd, (int *) addr)); 975 976 case DIOCSCACHE: 977 if ((flag & FWRITE) == 0) 978 return (EBADF); 979 return (sd_setcache(sd, *(int *) addr)); 980 981 case DIOCCACHESYNC: 982 /* 983 * XXX Do we really need to care about having a writable 984 * file descriptor here? 985 */ 986 if ((flag & FWRITE) == 0) 987 return (EBADF); 988 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 989 error = sd_flush(sd, 0); 990 if (error) { 991 sd->flags &= ~SDF_FLUSHING; 992 return (error); 993 } 994 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 995 } 996 return (0); 997 998 default: 999 error = dk_ioctl(dksc, dev, cmd, addr, flag, l); 1000 if (error == ENOTTY) 1001 error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l); 1002 return (error); 1003 } 1004 1005 #ifdef DIAGNOSTIC 1006 panic("sdioctl: impossible"); 1007 #endif 1008 } 1009 1010 static void 1011 sd_label(device_t self, struct disklabel *lp) 1012 { 1013 struct sd_softc *sd = device_private(self); 1014 1015 strncpy(lp->d_typename, sd->name, 16); 1016 lp->d_rpm = sd->params.rot_rate; 1017 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) 1018 lp->d_flags |= D_REMOVABLE; 1019 } 1020 1021 static bool 1022 sd_shutdown(device_t self, int how) 1023 { 1024 struct sd_softc *sd = device_private(self); 1025 struct dk_softc *dksc = &sd->sc_dksc; 1026 1027 /* 1028 * If the disk cache needs to be flushed, and the disk supports 1029 * it, flush it. We're cold at this point, so we poll for 1030 * completion. 1031 */ 1032 if ((sd->flags & SDF_DIRTY) != 0) { 1033 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1034 aprint_error_dev(dksc->sc_dev, 1035 "cache synchronization failed\n"); 1036 sd->flags &= ~SDF_FLUSHING; 1037 } else 1038 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1039 } 1040 return true; 1041 } 1042 1043 static bool 1044 sd_suspend(device_t dv, const pmf_qual_t *qual) 1045 { 1046 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1047 } 1048 1049 /* 1050 * Check Errors 1051 */ 1052 static int 1053 sd_interpret_sense(struct scsipi_xfer *xs) 1054 { 1055 struct scsipi_periph *periph = xs->xs_periph; 1056 struct scsipi_channel *chan = periph->periph_channel; 1057 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1058 struct sd_softc *sd = device_private(periph->periph_dev); 1059 struct dk_softc *dksc = &sd->sc_dksc; 1060 int error, retval = EJUSTRETURN; 1061 1062 /* 1063 * If the periph is already recovering, just do the normal 1064 * error processing. 1065 */ 1066 if (periph->periph_flags & PERIPH_RECOVERING) 1067 return (retval); 1068 1069 /* 1070 * Ignore errors from accessing illegal fields (e.g. trying to 1071 * lock the door of a digicam, which doesn't have a door that 1072 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1073 */ 1074 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1075 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1076 sense->asc == 0x24 && 1077 sense->ascq == 0x00) { /* Illegal field in CDB */ 1078 if (!(xs->xs_control & XS_CTL_SILENT)) { 1079 scsipi_printaddr(periph); 1080 printf("no door lock\n"); 1081 } 1082 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1083 return (retval); 1084 } 1085 1086 1087 1088 /* 1089 * If the device is not open yet, let the generic code handle it. 1090 */ 1091 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1092 return (retval); 1093 1094 /* 1095 * If it isn't a extended or extended/deferred error, let 1096 * the generic code handle it. 1097 */ 1098 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1099 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1100 return (retval); 1101 1102 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1103 sense->asc == 0x4) { 1104 if (sense->ascq == 0x01) { 1105 /* 1106 * Unit In The Process Of Becoming Ready. 1107 */ 1108 printf("%s: waiting for pack to spin up...\n", 1109 dksc->sc_xname); 1110 if (!callout_pending(&periph->periph_callout)) 1111 scsipi_periph_freeze(periph, 1); 1112 callout_reset(&periph->periph_callout, 1113 5 * hz, scsipi_periph_timed_thaw, periph); 1114 retval = ERESTART; 1115 } else if (sense->ascq == 0x02) { 1116 printf("%s: pack is stopped, restarting...\n", 1117 dksc->sc_xname); 1118 mutex_enter(chan_mtx(chan)); 1119 periph->periph_flags |= PERIPH_RECOVERING; 1120 mutex_exit(chan_mtx(chan)); 1121 error = scsipi_start(periph, SSS_START, 1122 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1123 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1124 if (error) { 1125 aprint_error_dev(dksc->sc_dev, 1126 "unable to restart pack\n"); 1127 retval = error; 1128 } else 1129 retval = ERESTART; 1130 mutex_enter(chan_mtx(chan)); 1131 periph->periph_flags &= ~PERIPH_RECOVERING; 1132 mutex_exit(chan_mtx(chan)); 1133 } 1134 } 1135 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1136 sense->asc == 0x31 && 1137 sense->ascq == 0x00) { /* maybe for any asq ? */ 1138 /* Medium Format Corrupted */ 1139 retval = EFTYPE; 1140 } 1141 return (retval); 1142 } 1143 1144 1145 static int 1146 sdsize(dev_t dev) 1147 { 1148 struct sd_softc *sd; 1149 struct dk_softc *dksc; 1150 int unit; 1151 1152 unit = SDUNIT(dev); 1153 sd = device_lookup_private(&sd_cd, unit); 1154 if (sd == NULL) 1155 return (-1); 1156 dksc = &sd->sc_dksc; 1157 1158 if (!device_is_active(dksc->sc_dev)) 1159 return (-1); 1160 1161 return dk_size(dksc, dev); 1162 } 1163 1164 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1165 static struct scsipi_xfer sx; 1166 1167 /* 1168 * dump all of physical memory into the partition specified, starting 1169 * at offset 'dumplo' into the partition. 1170 */ 1171 static int 1172 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1173 { 1174 struct sd_softc *sd; 1175 struct dk_softc *dksc; 1176 struct scsipi_periph *periph; 1177 int unit; 1178 1179 unit = SDUNIT(dev); 1180 if ((sd = device_lookup_private(&sd_cd, unit)) == NULL) 1181 return (ENXIO); 1182 dksc = &sd->sc_dksc; 1183 1184 if (!device_is_active(dksc->sc_dev)) 1185 return (ENODEV); 1186 1187 periph = sd->sc_periph; 1188 1189 /* Make sure it was initialized. */ 1190 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1191 return (ENXIO); 1192 1193 return dk_dump(dksc, dev, blkno, va, size); 1194 } 1195 1196 static int 1197 sd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1198 { 1199 struct sd_softc *sd = device_private(dev); 1200 struct dk_softc *dksc = &sd->sc_dksc; 1201 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1202 struct scsipi_rw_10 cmd; /* write command */ 1203 struct scsipi_xfer *xs; /* ... convenience */ 1204 struct scsipi_periph *periph; 1205 struct scsipi_channel *chan; 1206 size_t sectorsize; 1207 1208 periph = sd->sc_periph; 1209 chan = periph->periph_channel; 1210 1211 sectorsize = dg->dg_secsize; 1212 1213 xs = &sx; 1214 1215 #ifndef SD_DUMP_NOT_TRUSTED 1216 /* 1217 * Fill out the scsi command 1218 */ 1219 memset(&cmd, 0, sizeof(cmd)); 1220 cmd.opcode = WRITE_10; 1221 _lto4b(blkno, cmd.addr); 1222 _lto2b(nblk, cmd.length); 1223 /* 1224 * Fill out the scsipi_xfer structure 1225 * Note: we cannot sleep as we may be an interrupt 1226 * don't use scsipi_command() as it may want to wait 1227 * for an xs. 1228 */ 1229 memset(xs, 0, sizeof(sx)); 1230 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1231 XS_CTL_DATA_OUT; 1232 xs->xs_status = 0; 1233 xs->xs_periph = periph; 1234 xs->xs_retries = SDRETRIES; 1235 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1236 xs->cmd = (struct scsipi_generic *)&cmd; 1237 xs->cmdlen = sizeof(cmd); 1238 xs->resid = nblk * sectorsize; 1239 xs->error = XS_NOERROR; 1240 xs->bp = 0; 1241 xs->data = va; 1242 xs->datalen = nblk * sectorsize; 1243 callout_init(&xs->xs_callout, 0); 1244 1245 /* 1246 * Pass all this info to the scsi driver. 1247 */ 1248 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1249 if ((xs->xs_status & XS_STS_DONE) == 0 || 1250 xs->error != XS_NOERROR) 1251 return (EIO); 1252 #else /* SD_DUMP_NOT_TRUSTED */ 1253 /* Let's just talk about this first... */ 1254 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1255 delay(500 * 1000); /* half a second */ 1256 #endif /* SD_DUMP_NOT_TRUSTED */ 1257 1258 return (0); 1259 } 1260 1261 static int 1262 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1263 int page, int flags, int *big) 1264 { 1265 1266 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1267 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1268 *big = 1; 1269 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1270 size + sizeof(struct scsi_mode_parameter_header_10), 1271 flags, SDRETRIES, 6000); 1272 } else { 1273 *big = 0; 1274 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1275 size + sizeof(struct scsi_mode_parameter_header_6), 1276 flags, SDRETRIES, 6000); 1277 } 1278 } 1279 1280 static int 1281 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1282 int flags, int big) 1283 { 1284 1285 if (big) { 1286 struct scsi_mode_parameter_header_10 *header = sense; 1287 1288 _lto2b(0, header->data_length); 1289 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1290 size + sizeof(struct scsi_mode_parameter_header_10), 1291 flags, SDRETRIES, 6000); 1292 } else { 1293 struct scsi_mode_parameter_header_6 *header = sense; 1294 1295 header->data_length = 0; 1296 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1297 size + sizeof(struct scsi_mode_parameter_header_6), 1298 flags, SDRETRIES, 6000); 1299 } 1300 } 1301 1302 /* 1303 * sd_validate_blksize: 1304 * 1305 * Validate the block size. Print error if periph is specified, 1306 */ 1307 static int 1308 sd_validate_blksize(struct scsipi_periph *periph, int len) 1309 { 1310 1311 switch (len) { 1312 case 256: 1313 case 512: 1314 case 1024: 1315 case 2048: 1316 case 4096: 1317 return 1; 1318 } 1319 1320 if (periph) { 1321 scsipi_printaddr(periph); 1322 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1323 (len ^ (1 << (ffs(len) - 1))) ? 1324 "preposterous" : "unsupported", 1325 len, SD_DEFAULT_BLKSIZE); 1326 } 1327 1328 return 0; 1329 } 1330 1331 /* 1332 * sd_read_capacity: 1333 * 1334 * Find out from the device what its capacity is. 1335 */ 1336 static u_int64_t 1337 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1338 { 1339 union { 1340 struct scsipi_read_capacity_10 cmd; 1341 struct scsipi_read_capacity_16 cmd16; 1342 } cmd; 1343 union { 1344 struct scsipi_read_capacity_10_data data; 1345 struct scsipi_read_capacity_16_data data16; 1346 } *datap; 1347 uint64_t rv; 1348 1349 memset(&cmd, 0, sizeof(cmd)); 1350 cmd.cmd.opcode = READ_CAPACITY_10; 1351 1352 /* 1353 * Don't allocate data buffer on stack; 1354 * The lower driver layer might use the same stack and 1355 * if it uses region which is in the same cacheline, 1356 * cache flush ops against the data buffer won't work properly. 1357 */ 1358 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1359 if (datap == NULL) 1360 return 0; 1361 1362 /* 1363 * If the command works, interpret the result as a 4 byte 1364 * number of blocks 1365 */ 1366 rv = 0; 1367 memset(datap, 0, sizeof(datap->data)); 1368 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1369 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1370 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1371 goto out; 1372 1373 if (_4btol(datap->data.addr) != 0xffffffff) { 1374 *blksize = _4btol(datap->data.length); 1375 rv = _4btol(datap->data.addr) + 1; 1376 goto out; 1377 } 1378 1379 /* 1380 * Device is larger than can be reflected by READ CAPACITY (10). 1381 * Try READ CAPACITY (16). 1382 */ 1383 1384 memset(&cmd, 0, sizeof(cmd)); 1385 cmd.cmd16.opcode = READ_CAPACITY_16; 1386 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1387 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1388 1389 memset(datap, 0, sizeof(datap->data16)); 1390 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1391 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1392 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1393 goto out; 1394 1395 *blksize = _4btol(datap->data16.length); 1396 rv = _8btol(datap->data16.addr) + 1; 1397 1398 out: 1399 free(datap, M_TEMP); 1400 return rv; 1401 } 1402 1403 static int 1404 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1405 { 1406 struct { 1407 struct scsi_mode_parameter_header_6 header; 1408 /* no block descriptor */ 1409 u_int8_t pg_code; /* page code (should be 6) */ 1410 u_int8_t pg_length; /* page length (should be 11) */ 1411 u_int8_t wcd; /* bit0: cache disable */ 1412 u_int8_t lbs[2]; /* logical block size */ 1413 u_int8_t size[5]; /* number of log. blocks */ 1414 u_int8_t pp; /* power/performance */ 1415 u_int8_t flags; 1416 u_int8_t resvd; 1417 } scsipi_sense; 1418 u_int64_t blocks; 1419 int error, blksize; 1420 1421 /* 1422 * sd_read_capacity (ie "read capacity") and mode sense page 6 1423 * give the same information. Do both for now, and check 1424 * for consistency. 1425 * XXX probably differs for removable media 1426 */ 1427 dp->blksize = SD_DEFAULT_BLKSIZE; 1428 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1429 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1430 1431 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1432 &scsipi_sense.header, sizeof(scsipi_sense), 1433 flags, SDRETRIES, 6000); 1434 1435 if (error != 0) 1436 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1437 1438 dp->blksize = blksize; 1439 if (!sd_validate_blksize(NULL, dp->blksize)) 1440 dp->blksize = _2btol(scsipi_sense.lbs); 1441 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1442 dp->blksize = SD_DEFAULT_BLKSIZE; 1443 1444 /* 1445 * Create a pseudo-geometry. 1446 */ 1447 dp->heads = 64; 1448 dp->sectors = 32; 1449 dp->cyls = blocks / (dp->heads * dp->sectors); 1450 dp->disksize = _5btol(scsipi_sense.size); 1451 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1452 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1453 (unsigned long long)dp->disksize, 1454 (unsigned long long)blocks); 1455 dp->disksize = blocks; 1456 } 1457 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1458 1459 return (SDGP_RESULT_OK); 1460 } 1461 1462 /* 1463 * Get the scsi driver to send a full inquiry to the * device and use the 1464 * results to fill out the disk parameter structure. 1465 */ 1466 static int 1467 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1468 { 1469 u_int64_t blocks; 1470 int error, blksize; 1471 #if 0 1472 int i; 1473 u_int8_t *p; 1474 #endif 1475 1476 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1477 flags); 1478 if (blocks == 0) { 1479 struct scsipi_read_format_capacities cmd; 1480 struct { 1481 struct scsipi_capacity_list_header header; 1482 struct scsipi_capacity_descriptor desc; 1483 } __packed data; 1484 1485 memset(&cmd, 0, sizeof(cmd)); 1486 memset(&data, 0, sizeof(data)); 1487 cmd.opcode = READ_FORMAT_CAPACITIES; 1488 _lto2b(sizeof(data), cmd.length); 1489 1490 error = scsipi_command(sd->sc_periph, 1491 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1492 SDRETRIES, 20000, NULL, 1493 flags | XS_CTL_DATA_IN); 1494 if (error == EFTYPE) { 1495 /* Medium Format Corrupted, handle as not formatted */ 1496 return (SDGP_RESULT_UNFORMATTED); 1497 } 1498 if (error || data.header.length == 0) 1499 return (SDGP_RESULT_OFFLINE); 1500 1501 #if 0 1502 printf("rfc: length=%d\n", data.header.length); 1503 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"); 1504 #endif 1505 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1506 case SCSIPI_CAP_DESC_CODE_RESERVED: 1507 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1508 break; 1509 1510 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1511 return (SDGP_RESULT_UNFORMATTED); 1512 1513 case SCSIPI_CAP_DESC_CODE_NONE: 1514 return (SDGP_RESULT_OFFLINE); 1515 } 1516 1517 dp->disksize = blocks = _4btol(data.desc.nblks); 1518 if (blocks == 0) 1519 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1520 1521 blksize = _3btol(data.desc.blklen); 1522 1523 } else if (!sd_validate_blksize(NULL, blksize)) { 1524 struct sd_mode_sense_data scsipi_sense; 1525 int big, bsize; 1526 struct scsi_general_block_descriptor *bdesc; 1527 1528 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1529 error = sd_mode_sense(sd, 0, &scsipi_sense, 1530 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1531 if (!error) { 1532 if (big) { 1533 bdesc = (void *)(&scsipi_sense.header.big + 1); 1534 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1535 } else { 1536 bdesc = (void *)(&scsipi_sense.header.small + 1); 1537 bsize = scsipi_sense.header.small.blk_desc_len; 1538 } 1539 1540 #if 0 1541 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1542 printf("page 0 bsize=%d\n", bsize); 1543 printf("page 0 ok\n"); 1544 #endif 1545 1546 if (bsize >= 8) { 1547 blksize = _3btol(bdesc->blklen); 1548 } 1549 } 1550 } 1551 1552 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1553 blksize = SD_DEFAULT_BLKSIZE; 1554 1555 dp->blksize = blksize; 1556 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1557 return (0); 1558 } 1559 1560 static int 1561 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1562 { 1563 struct sd_mode_sense_data scsipi_sense; 1564 int error; 1565 int big, byte2; 1566 size_t poffset; 1567 union scsi_disk_pages *pages; 1568 1569 byte2 = SMS_DBD; 1570 again: 1571 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1572 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1573 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1574 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1575 flags | XS_CTL_SILENT, &big); 1576 if (error) { 1577 if (byte2 == SMS_DBD) { 1578 /* No result; try once more with DBD off */ 1579 byte2 = 0; 1580 goto again; 1581 } 1582 return (error); 1583 } 1584 1585 if (big) { 1586 poffset = sizeof scsipi_sense.header.big; 1587 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1588 } else { 1589 poffset = sizeof scsipi_sense.header.small; 1590 poffset += scsipi_sense.header.small.blk_desc_len; 1591 } 1592 1593 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1594 return ERESTART; 1595 1596 pages = (void *)((u_long)&scsipi_sense + poffset); 1597 #if 0 1598 { 1599 size_t i; 1600 u_int8_t *p; 1601 1602 printf("page 4 sense:"); 1603 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1604 i--, p++) 1605 printf(" %02x", *p); 1606 printf("\n"); 1607 printf("page 4 pg_code=%d sense=%p/%p\n", 1608 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1609 } 1610 #endif 1611 1612 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1613 return (ERESTART); 1614 1615 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1616 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1617 _3btol(pages->rigid_geometry.ncyl), 1618 pages->rigid_geometry.nheads, 1619 _2btol(pages->rigid_geometry.st_cyl_wp), 1620 _2btol(pages->rigid_geometry.st_cyl_rwc), 1621 _2btol(pages->rigid_geometry.land_zone))); 1622 1623 /* 1624 * KLUDGE!! (for zone recorded disks) 1625 * give a number of sectors so that sec * trks * cyls 1626 * is <= disk_size 1627 * can lead to wasted space! THINK ABOUT THIS ! 1628 */ 1629 dp->heads = pages->rigid_geometry.nheads; 1630 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1631 if (dp->heads == 0 || dp->cyls == 0) 1632 return (ERESTART); 1633 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1634 1635 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1636 if (dp->rot_rate == 0) 1637 dp->rot_rate = 3600; 1638 1639 #if 0 1640 printf("page 4 ok\n"); 1641 #endif 1642 return (0); 1643 } 1644 1645 static int 1646 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1647 { 1648 struct sd_mode_sense_data scsipi_sense; 1649 int error; 1650 int big, byte2; 1651 size_t poffset; 1652 union scsi_disk_pages *pages; 1653 1654 byte2 = SMS_DBD; 1655 again: 1656 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1657 error = sd_mode_sense(sd, 0, &scsipi_sense, 1658 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1659 sizeof(scsipi_sense.pages.flex_geometry), 5, 1660 flags | XS_CTL_SILENT, &big); 1661 if (error) { 1662 if (byte2 == SMS_DBD) { 1663 /* No result; try once more with DBD off */ 1664 byte2 = 0; 1665 goto again; 1666 } 1667 return (error); 1668 } 1669 1670 if (big) { 1671 poffset = sizeof scsipi_sense.header.big; 1672 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1673 } else { 1674 poffset = sizeof scsipi_sense.header.small; 1675 poffset += scsipi_sense.header.small.blk_desc_len; 1676 } 1677 1678 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 1679 return ERESTART; 1680 1681 pages = (void *)((u_long)&scsipi_sense + poffset); 1682 #if 0 1683 { 1684 size_t i; 1685 u_int8_t *p; 1686 1687 printf("page 5 sense:"); 1688 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1689 i--, p++) 1690 printf(" %02x", *p); 1691 printf("\n"); 1692 printf("page 5 pg_code=%d sense=%p/%p\n", 1693 pages->flex_geometry.pg_code, &scsipi_sense, pages); 1694 } 1695 #endif 1696 1697 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1698 return (ERESTART); 1699 1700 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1701 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1702 _3btol(pages->flex_geometry.ncyl), 1703 pages->flex_geometry.nheads, 1704 pages->flex_geometry.ph_sec_tr, 1705 _2btol(pages->flex_geometry.bytes_s))); 1706 1707 dp->heads = pages->flex_geometry.nheads; 1708 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1709 dp->sectors = pages->flex_geometry.ph_sec_tr; 1710 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1711 return (ERESTART); 1712 1713 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1714 if (dp->rot_rate == 0) 1715 dp->rot_rate = 3600; 1716 1717 #if 0 1718 printf("page 5 ok\n"); 1719 #endif 1720 return (0); 1721 } 1722 1723 static int 1724 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1725 { 1726 struct dk_softc *dksc = &sd->sc_dksc; 1727 int error; 1728 1729 /* 1730 * If offline, the SDEV_MEDIA_LOADED flag will be 1731 * cleared by the caller if necessary. 1732 */ 1733 if (sd->type == T_SIMPLE_DIRECT) { 1734 error = sd_get_simplifiedparms(sd, dp, flags); 1735 if (!error) 1736 goto setprops; 1737 return (error); 1738 } 1739 1740 error = sd_get_capacity(sd, dp, flags); 1741 if (error) 1742 return (error); 1743 1744 if (sd->type == T_OPTICAL) 1745 goto page0; 1746 1747 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1748 if (!sd_get_parms_page5(sd, dp, flags) || 1749 !sd_get_parms_page4(sd, dp, flags)) 1750 goto setprops; 1751 } else { 1752 if (!sd_get_parms_page4(sd, dp, flags) || 1753 !sd_get_parms_page5(sd, dp, flags)) 1754 goto setprops; 1755 } 1756 1757 page0: 1758 printf("%s: fabricating a geometry\n", dksc->sc_xname); 1759 /* Try calling driver's method for figuring out geometry. */ 1760 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1761 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1762 (sd->sc_periph, dp, dp->disksize)) { 1763 /* 1764 * Use adaptec standard fictitious geometry 1765 * this depends on which controller (e.g. 1542C is 1766 * different. but we have to put SOMETHING here..) 1767 */ 1768 dp->heads = 64; 1769 dp->sectors = 32; 1770 dp->cyls = dp->disksize / (64 * 32); 1771 } 1772 dp->rot_rate = 3600; 1773 1774 setprops: 1775 sd_set_geometry(sd); 1776 1777 return (SDGP_RESULT_OK); 1778 } 1779 1780 static int 1781 sd_flush(struct sd_softc *sd, int flags) 1782 { 1783 struct scsipi_periph *periph = sd->sc_periph; 1784 struct scsi_synchronize_cache_10 cmd; 1785 1786 /* 1787 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1788 * We issue with address 0 length 0, which should be 1789 * interpreted by the device as "all remaining blocks 1790 * starting at address 0". We ignore ILLEGAL REQUEST 1791 * in the event that the command is not supported by 1792 * the device, and poll for completion so that we know 1793 * that the cache has actually been flushed. 1794 * 1795 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1796 * command, as indicated by our quirks flags. 1797 * 1798 * XXX What about older devices? 1799 */ 1800 if (periph->periph_version < 2 || 1801 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1802 return (0); 1803 1804 sd->flags |= SDF_FLUSHING; 1805 memset(&cmd, 0, sizeof(cmd)); 1806 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1807 1808 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1809 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1810 } 1811 1812 static int 1813 sd_getcache(struct sd_softc *sd, int *bitsp) 1814 { 1815 struct scsipi_periph *periph = sd->sc_periph; 1816 struct sd_mode_sense_data scsipi_sense; 1817 int error, bits = 0; 1818 int big; 1819 union scsi_disk_pages *pages; 1820 uint8_t dev_spec; 1821 1822 /* only SCSI-2 and later supported */ 1823 if (periph->periph_version < 2) 1824 return (EOPNOTSUPP); 1825 1826 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1827 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1828 sizeof(scsipi_sense.pages.caching_params), 8, XS_CTL_SILENT, &big); 1829 if (error) 1830 return (error); 1831 1832 if (big) { 1833 pages = (void *)(&scsipi_sense.header.big + 1); 1834 dev_spec = scsipi_sense.header.big.dev_spec; 1835 } else { 1836 pages = (void *)(&scsipi_sense.header.small + 1); 1837 dev_spec = scsipi_sense.header.small.dev_spec; 1838 } 1839 1840 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1841 bits |= DKCACHE_READ; 1842 if (pages->caching_params.flags & CACHING_WCE) 1843 bits |= DKCACHE_WRITE; 1844 if (pages->caching_params.pg_code & PGCODE_PS) 1845 bits |= DKCACHE_SAVE; 1846 1847 /* 1848 * Support for FUA/DPO, defined starting with SCSI-2. Use only 1849 * if device claims to support it, according to the MODE SENSE. 1850 */ 1851 if (!(periph->periph_quirks & PQUIRK_NOFUA) && 1852 ISSET(dev_spec, SMH_DSP_DPOFUA)) 1853 bits |= DKCACHE_FUA | DKCACHE_DPO; 1854 1855 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1856 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1857 sizeof(scsipi_sense.pages.caching_params), 1858 SMS_PCTRL_CHANGEABLE|8, XS_CTL_SILENT, &big); 1859 if (error == 0) { 1860 if (big) 1861 pages = (void *)(&scsipi_sense.header.big + 1); 1862 else 1863 pages = (void *)(&scsipi_sense.header.small + 1); 1864 1865 if (pages->caching_params.flags & CACHING_RCD) 1866 bits |= DKCACHE_RCHANGE; 1867 if (pages->caching_params.flags & CACHING_WCE) 1868 bits |= DKCACHE_WCHANGE; 1869 } 1870 1871 *bitsp = bits; 1872 1873 return (0); 1874 } 1875 1876 static int 1877 sd_setcache(struct sd_softc *sd, int bits) 1878 { 1879 struct scsipi_periph *periph = sd->sc_periph; 1880 struct sd_mode_sense_data scsipi_sense; 1881 int error; 1882 uint8_t oflags, byte2 = 0; 1883 int big; 1884 union scsi_disk_pages *pages; 1885 1886 if (periph->periph_version < 2) 1887 return (EOPNOTSUPP); 1888 1889 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1890 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1891 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1892 if (error) 1893 return (error); 1894 1895 if (big) 1896 pages = (void *)(&scsipi_sense.header.big + 1); 1897 else 1898 pages = (void *)(&scsipi_sense.header.small + 1); 1899 1900 oflags = pages->caching_params.flags; 1901 1902 if (bits & DKCACHE_READ) 1903 pages->caching_params.flags &= ~CACHING_RCD; 1904 else 1905 pages->caching_params.flags |= CACHING_RCD; 1906 1907 if (bits & DKCACHE_WRITE) 1908 pages->caching_params.flags |= CACHING_WCE; 1909 else 1910 pages->caching_params.flags &= ~CACHING_WCE; 1911 1912 if (oflags == pages->caching_params.flags) 1913 return (0); 1914 1915 pages->caching_params.pg_code &= PGCODE_MASK; 1916 1917 if (bits & DKCACHE_SAVE) 1918 byte2 |= SMS_SP; 1919 1920 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 1921 sizeof(struct scsi_mode_page_header) + 1922 pages->caching_params.pg_length, 0, big)); 1923 } 1924 1925 static void 1926 sd_set_geometry(struct sd_softc *sd) 1927 { 1928 struct dk_softc *dksc = &sd->sc_dksc; 1929 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1930 1931 memset(dg, 0, sizeof(*dg)); 1932 1933 dg->dg_secperunit = sd->params.disksize; 1934 dg->dg_secsize = sd->params.blksize; 1935 dg->dg_nsectors = sd->params.sectors; 1936 dg->dg_ntracks = sd->params.heads; 1937 dg->dg_ncylinders = sd->params.cyls; 1938 1939 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, NULL); 1940 } 1941
Indexes created Mon Sep 29 21:09:56 GMT 2025