sd.c revision 1.327
1 /* $NetBSD: sd.c,v 1.327 2019/03/19 06:59:40 mlelstv 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 1.327 2019/03/19 06:59:40 mlelstv 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 strncpy(sd->typename, sa->sa_inqbuf.product, sizeof(sd->typename)); 260 261 if (sd->type == T_SIMPLE_DIRECT) 262 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 263 264 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph))) { 265 case SCSIPI_BUSTYPE_SCSI: 266 dtype = DKTYPE_SCSI; 267 if (periph->periph_version == 0) 268 sd->flags |= SDF_ANCIENT; 269 break; 270 case SCSIPI_BUSTYPE_ATAPI: 271 dtype = DKTYPE_ATAPI; 272 break; 273 default: 274 dtype = DKTYPE_UNKNOWN; 275 break; 276 } 277 278 /* Initialize dk and disk structure. */ 279 dk_init(dksc, self, dtype); 280 disk_init(&dksc->sc_dkdev, dksc->sc_xname, &sddkdriver); 281 282 /* Attach dk and disk subsystems */ 283 dk_attach(dksc); 284 disk_attach(&dksc->sc_dkdev); 285 286 bufq_alloc(&dksc->sc_bufq, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 287 288 callout_init(&sd->sc_callout, 0); 289 290 /* 291 * Store information needed to contact our base driver 292 */ 293 sd->sc_periph = periph; 294 295 periph->periph_dev = dksc->sc_dev; 296 periph->periph_switch = &sd_switch; 297 298 /* 299 * Increase our openings to the maximum-per-periph 300 * supported by the adapter. This will either be 301 * clamped down or grown by the adapter if necessary. 302 */ 303 periph->periph_openings = 304 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 305 periph->periph_flags |= PERIPH_GROW_OPENINGS; 306 307 /* 308 * Use the subdriver to request information regarding the drive. 309 */ 310 aprint_naive("\n"); 311 aprint_normal("\n"); 312 313 if (periph->periph_quirks & PQUIRK_START) 314 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 315 316 error = scsipi_test_unit_ready(periph, 317 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 318 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 319 if (error) 320 result = SDGP_RESULT_OFFLINE; 321 else 322 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 323 324 aprint_normal_dev(dksc->sc_dev, ""); 325 switch (result) { 326 case SDGP_RESULT_OK: 327 format_bytes(pbuf, sizeof(pbuf), 328 (u_int64_t)dp->disksize * dp->blksize); 329 aprint_normal( 330 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 331 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 332 (unsigned long long)dp->disksize); 333 break; 334 335 case SDGP_RESULT_OFFLINE: 336 aprint_normal("drive offline"); 337 break; 338 339 case SDGP_RESULT_UNFORMATTED: 340 aprint_normal("unformatted media"); 341 break; 342 343 #ifdef DIAGNOSTIC 344 default: 345 panic("sdattach: unknown result from get_parms"); 346 break; 347 #endif 348 } 349 aprint_normal("\n"); 350 351 /* Discover wedges on this disk. */ 352 dkwedge_discover(&dksc->sc_dkdev); 353 354 /* 355 * Establish a shutdown hook so that we can ensure that 356 * our data has actually made it onto the platter at 357 * shutdown time. Note that this relies on the fact 358 * that the shutdown hooks at the "leaves" of the device tree 359 * are run, first (thus guaranteeing that our hook runs before 360 * our ancestors'). 361 */ 362 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 363 aprint_error_dev(self, "couldn't establish power handler\n"); 364 } 365 366 static int 367 sddetach(device_t self, int flags) 368 { 369 struct sd_softc *sd = device_private(self); 370 struct dk_softc *dksc = &sd->sc_dksc; 371 struct scsipi_periph *periph = sd->sc_periph; 372 struct scsipi_channel *chan = periph->periph_channel; 373 int bmaj, cmaj, i, mn, rc; 374 375 if ((rc = disk_begindetach(&dksc->sc_dkdev, sd_lastclose, self, flags)) != 0) 376 return rc; 377 378 /* locate the major number */ 379 bmaj = bdevsw_lookup_major(&sd_bdevsw); 380 cmaj = cdevsw_lookup_major(&sd_cdevsw); 381 382 /* Nuke the vnodes for any open instances */ 383 for (i = 0; i < MAXPARTITIONS; i++) { 384 mn = SDMINOR(device_unit(self), i); 385 vdevgone(bmaj, mn, mn, VBLK); 386 vdevgone(cmaj, mn, mn, VCHR); 387 } 388 389 /* kill any pending restart */ 390 callout_halt(&sd->sc_callout, NULL); 391 392 dk_drain(dksc); 393 394 /* Kill off any pending commands. */ 395 mutex_enter(chan_mtx(chan)); 396 scsipi_kill_pending(periph); 397 mutex_exit(chan_mtx(chan)); 398 399 bufq_free(dksc->sc_bufq); 400 401 /* Delete all of our wedges. */ 402 dkwedge_delall(&dksc->sc_dkdev); 403 404 /* Detach from the disk list. */ 405 disk_detach(&dksc->sc_dkdev); 406 disk_destroy(&dksc->sc_dkdev); 407 408 dk_detach(dksc); 409 410 callout_destroy(&sd->sc_callout); 411 412 pmf_device_deregister(self); 413 414 return (0); 415 } 416 417 /* 418 * Serialized by caller 419 */ 420 static int 421 sd_firstopen(device_t self, dev_t dev, int flag, int fmt) 422 { 423 struct sd_softc *sd = device_private(self); 424 struct scsipi_periph *periph = sd->sc_periph; 425 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 426 int error, silent; 427 int part, removable; 428 429 part = SDPART(dev); 430 431 error = scsipi_adapter_addref(adapt); 432 if (error) 433 return error; 434 435 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 436 silent = XS_CTL_SILENT; 437 else 438 silent = 0; 439 440 /* Check that it is still responding and ok. */ 441 error = scsipi_test_unit_ready(periph, 442 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 443 silent); 444 445 /* 446 * Start the pack spinning if necessary. Always allow the 447 * raw parition to be opened, for raw IOCTLs. Data transfers 448 * will check for SDEV_MEDIA_LOADED. 449 */ 450 if (error == EIO) { 451 error = scsipi_start(periph, SSS_START, silent); 452 if (error == EINVAL) 453 error = EIO; 454 } 455 if (error) 456 goto bad; 457 458 removable = (periph->periph_flags & PERIPH_REMOVABLE) != 0; 459 if (removable) { 460 /* Lock the pack in. */ 461 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 462 XS_CTL_IGNORE_ILLEGAL_REQUEST | 463 XS_CTL_IGNORE_MEDIA_CHANGE | 464 XS_CTL_SILENT); 465 if (error) 466 goto bad; 467 } 468 469 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 470 int param_error; 471 472 /* 473 * Load the physical device parameters. 474 * 475 * Note that if media is present but unformatted, 476 * we allow the open (so that it can be formatted!). 477 * The drive should refuse real I/O, if the media is 478 * unformatted. 479 */ 480 param_error = sd_get_parms(sd, &sd->params, 0); 481 if (param_error == SDGP_RESULT_OFFLINE) { 482 error = ENXIO; 483 goto bad2; 484 } 485 periph->periph_flags |= PERIPH_MEDIA_LOADED; 486 487 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 488 } 489 490 periph->periph_flags |= PERIPH_OPEN; 491 return 0; 492 493 bad2: 494 if (removable) 495 scsipi_prevent(periph, SPAMR_ALLOW, 496 XS_CTL_IGNORE_ILLEGAL_REQUEST | 497 XS_CTL_IGNORE_MEDIA_CHANGE | 498 XS_CTL_SILENT); 499 500 bad: 501 scsipi_adapter_delref(adapt); 502 return error; 503 } 504 505 /* 506 * open the device. Make sure the partition info is a up-to-date as can be. 507 */ 508 static int 509 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 510 { 511 struct sd_softc *sd; 512 struct dk_softc *dksc; 513 struct scsipi_periph *periph; 514 int unit, part; 515 int error; 516 517 unit = SDUNIT(dev); 518 sd = device_lookup_private(&sd_cd, unit); 519 if (sd == NULL) 520 return (ENXIO); 521 dksc = &sd->sc_dksc; 522 523 if (!device_is_active(dksc->sc_dev)) 524 return (ENODEV); 525 526 periph = sd->sc_periph; 527 part = SDPART(dev); 528 529 SC_DEBUG(periph, SCSIPI_DB1, 530 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", 531 dev, unit, sd_cd.cd_ndevs, SDPART(dev))); 532 533 /* 534 * If any partition is open, but the disk has been invalidated, 535 * disallow further opens of non-raw partition 536 */ 537 if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) == 538 PERIPH_OPEN) { 539 if (part != RAW_PART || fmt != S_IFCHR) 540 return EIO; 541 } 542 543 error = dk_open(dksc, dev, flag, fmt, l); 544 545 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 546 547 return error; 548 } 549 550 /* 551 * Serialized by caller 552 */ 553 static int 554 sd_lastclose(device_t self) 555 { 556 struct sd_softc *sd = device_private(self); 557 struct dk_softc *dksc = &sd->sc_dksc; 558 struct scsipi_periph *periph = sd->sc_periph; 559 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 560 561 /* 562 * If the disk cache needs flushing, and the disk supports 563 * it, do it now. 564 */ 565 if ((sd->flags & SDF_DIRTY) != 0) { 566 if (sd_flush(sd, 0)) { 567 aprint_error_dev(dksc->sc_dev, 568 "cache synchronization failed\n"); 569 sd->flags &= ~SDF_FLUSHING; 570 } else 571 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 572 } 573 574 scsipi_wait_drain(periph); 575 576 if (periph->periph_flags & PERIPH_REMOVABLE) 577 scsipi_prevent(periph, SPAMR_ALLOW, 578 XS_CTL_IGNORE_ILLEGAL_REQUEST | 579 XS_CTL_IGNORE_NOT_READY | 580 XS_CTL_SILENT); 581 periph->periph_flags &= ~PERIPH_OPEN; 582 583 scsipi_wait_drain(periph); 584 585 scsipi_adapter_delref(adapt); 586 587 return 0; 588 } 589 590 /* 591 * close the device.. only called if we are the LAST occurence of an open 592 * device. Convenient now but usually a pain. 593 */ 594 static int 595 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 596 { 597 struct sd_softc *sd; 598 struct dk_softc *dksc; 599 int unit; 600 601 unit = SDUNIT(dev); 602 sd = device_lookup_private(&sd_cd, unit); 603 dksc = &sd->sc_dksc; 604 605 return dk_close(dksc, dev, flag, fmt, l); 606 } 607 608 /* 609 * Actually translate the requested transfer into one the physical driver 610 * can understand. The transfer is described by a buf and will include 611 * only one physical transfer. 612 */ 613 static void 614 sdstrategy(struct buf *bp) 615 { 616 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 617 struct dk_softc *dksc = &sd->sc_dksc; 618 struct scsipi_periph *periph = sd->sc_periph; 619 620 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 621 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 622 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 623 624 /* 625 * If the device has been made invalid, error out 626 */ 627 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 628 !device_is_active(dksc->sc_dev)) { 629 if (periph->periph_flags & PERIPH_OPEN) 630 bp->b_error = EIO; 631 else 632 bp->b_error = ENODEV; 633 634 bp->b_resid = bp->b_bcount; 635 biodone(bp); 636 return; 637 } 638 639 dk_strategy(dksc, bp); 640 } 641 642 /* 643 * Issue single I/O command 644 * 645 * Called from dk_start and implicitely from dk_strategy 646 */ 647 static int 648 sd_diskstart(device_t dev, struct buf *bp) 649 { 650 struct sd_softc *sd = device_private(dev); 651 struct scsipi_periph *periph = sd->sc_periph; 652 struct scsipi_channel *chan = periph->periph_channel; 653 struct scsipi_rw_16 cmd16; 654 struct scsipi_rw_10 cmd_big; 655 struct scsi_rw_6 cmd_small; 656 struct scsipi_generic *cmdp; 657 struct scsipi_xfer *xs; 658 int error, flags, nblks, cmdlen; 659 int cdb_flags; 660 bool havefua = !(periph->periph_quirks & PQUIRK_NOFUA); 661 662 mutex_enter(chan_mtx(chan)); 663 664 if (periph->periph_active >= periph->periph_openings) { 665 error = EAGAIN; 666 goto out; 667 } 668 669 /* 670 * there is excess capacity, but a special waits 671 * It'll need the adapter as soon as we clear out of the 672 * way and let it run (user level wait). 673 */ 674 if (periph->periph_flags & PERIPH_WAITING) { 675 periph->periph_flags &= ~PERIPH_WAITING; 676 cv_broadcast(periph_cv_periph(periph)); 677 error = EAGAIN; 678 goto out; 679 } 680 681 /* 682 * If the device has become invalid, abort all the 683 * reads and writes until all files have been closed and 684 * re-opened 685 */ 686 if (__predict_false( 687 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 688 error = EIO; 689 goto out; 690 } 691 692 /* 693 * Mark the disk dirty so that the cache will be 694 * flushed on close. 695 */ 696 if ((bp->b_flags & B_READ) == 0) 697 sd->flags |= SDF_DIRTY; 698 699 if (sd->params.blksize == DEV_BSIZE) 700 nblks = bp->b_bcount >> DEV_BSHIFT; 701 else 702 nblks = howmany(bp->b_bcount, sd->params.blksize); 703 704 /* 705 * Pass FUA and/or DPO if requested. Must be done before CDB 706 * selection, as 6-byte CDB doesn't support the flags. 707 */ 708 cdb_flags = 0; 709 if (havefua) { 710 if (bp->b_flags & B_MEDIA_FUA) 711 cdb_flags |= SRWB_FUA; 712 713 if (bp->b_flags & B_MEDIA_DPO) 714 cdb_flags |= SRWB_DPO; 715 } 716 717 /* 718 * Fill out the scsi command. Use the smallest CDB possible 719 * (6-byte, 10-byte, or 16-byte). If we need FUA or DPO, 720 * need to use 10-byte or bigger, as the 6-byte doesn't support 721 * the flags. 722 */ 723 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 724 ((nblks & 0xff) == nblks) && 725 !(periph->periph_quirks & PQUIRK_ONLYBIG) && 726 !cdb_flags) { 727 /* 6-byte CDB */ 728 memset(&cmd_small, 0, sizeof(cmd_small)); 729 cmd_small.opcode = (bp->b_flags & B_READ) ? 730 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 731 _lto3b(bp->b_rawblkno, cmd_small.addr); 732 cmd_small.length = nblks & 0xff; 733 cmdlen = sizeof(cmd_small); 734 cmdp = (struct scsipi_generic *)&cmd_small; 735 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 736 /* 10-byte CDB */ 737 memset(&cmd_big, 0, sizeof(cmd_big)); 738 cmd_big.opcode = (bp->b_flags & B_READ) ? 739 READ_10 : WRITE_10; 740 _lto4b(bp->b_rawblkno, cmd_big.addr); 741 _lto2b(nblks, cmd_big.length); 742 cmdlen = sizeof(cmd_big); 743 cmdp = (struct scsipi_generic *)&cmd_big; 744 } else { 745 /* 16-byte CDB */ 746 memset(&cmd16, 0, sizeof(cmd16)); 747 cmd16.opcode = (bp->b_flags & B_READ) ? 748 READ_16 : WRITE_16; 749 _lto8b(bp->b_rawblkno, cmd16.addr); 750 _lto4b(nblks, cmd16.length); 751 cmdlen = sizeof(cmd16); 752 cmdp = (struct scsipi_generic *)&cmd16; 753 } 754 755 if (cdb_flags) 756 cmdp->bytes[0] = cdb_flags; 757 758 /* 759 * Figure out what flags to use. 760 */ 761 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 762 if (bp->b_flags & B_READ) 763 flags |= XS_CTL_DATA_IN; 764 else 765 flags |= XS_CTL_DATA_OUT; 766 767 /* 768 * Call the routine that chats with the adapter. 769 * Note: we cannot sleep as we may be an interrupt 770 */ 771 xs = scsipi_make_xs_locked(periph, cmdp, cmdlen, 772 (u_char *)bp->b_data, bp->b_bcount, 773 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 774 if (__predict_false(xs == NULL)) { 775 /* 776 * out of memory. Keep this buffer in the queue, and 777 * retry later. 778 */ 779 callout_reset(&sd->sc_callout, hz / 2, sdrestart, sd); 780 error = EAGAIN; 781 goto out; 782 } 783 784 error = scsipi_execute_xs(xs); 785 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 786 KASSERT(error == 0); 787 788 out: 789 mutex_exit(chan_mtx(chan)); 790 791 return error; 792 } 793 794 /* 795 * Recover I/O request after memory shortage 796 * 797 * Called from callout 798 */ 799 static void 800 sdrestart(void *v) 801 { 802 struct sd_softc *sd = v; 803 struct dk_softc *dksc = &sd->sc_dksc; 804 805 dk_start(dksc, NULL); 806 } 807 808 /* 809 * Recover I/O request after memory shortage 810 * 811 * Called from scsipi midlayer when resources have been freed 812 * with channel lock held 813 */ 814 static void 815 sdstart(struct scsipi_periph *periph) 816 { 817 struct sd_softc *sd = device_private(periph->periph_dev); 818 struct dk_softc *dksc = &sd->sc_dksc; 819 struct scsipi_channel *chan = periph->periph_channel; 820 821 /* 822 * release channel lock as dk_start may need to acquire 823 * other locks 824 * 825 * sdstart is called from scsipi_put_xs and all its callers 826 * release the lock afterwards. So releasing it here 827 * doesn't matter. 828 */ 829 mutex_exit(chan_mtx(chan)); 830 831 dk_start(dksc, NULL); 832 833 mutex_enter(chan_mtx(chan)); 834 } 835 836 static void 837 sddone(struct scsipi_xfer *xs, int error) 838 { 839 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 840 struct dk_softc *dksc = &sd->sc_dksc; 841 struct buf *bp = xs->bp; 842 843 if (sd->flags & SDF_FLUSHING) { 844 /* Flush completed, no longer dirty. */ 845 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 846 } 847 848 if (bp) { 849 bp->b_error = error; 850 bp->b_resid = xs->resid; 851 if (error) { 852 /* on a read/write error bp->b_resid is zero, so fix */ 853 bp->b_resid = bp->b_bcount; 854 } 855 856 dk_done(dksc, bp); 857 /* dk_start is called from scsipi_complete */ 858 } 859 } 860 861 static void 862 sdminphys(struct buf *bp) 863 { 864 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 865 struct dk_softc *dksc = &sd->sc_dksc; 866 long xmax; 867 868 /* 869 * If the device is ancient, we want to make sure that 870 * the transfer fits into a 6-byte cdb. 871 * 872 * XXX Note that the SCSI-I spec says that 256-block transfers 873 * are allowed in a 6-byte read/write, and are specified 874 * by settng the "length" to 0. However, we're conservative 875 * here, allowing only 255-block transfers in case an 876 * ancient device gets confused by length == 0. A length of 0 877 * in a 10-byte read/write actually means 0 blocks. 878 */ 879 if ((sd->flags & SDF_ANCIENT) && 880 ((sd->sc_periph->periph_flags & 881 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 882 xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff; 883 884 if (bp->b_bcount > xmax) 885 bp->b_bcount = xmax; 886 } 887 888 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 889 } 890 891 static void 892 sd_iosize(device_t dev, int *count) 893 { 894 struct buf B; 895 int bmaj; 896 897 bmaj = bdevsw_lookup_major(&sd_bdevsw); 898 B.b_dev = MAKESDDEV(bmaj,device_unit(dev),RAW_PART); 899 B.b_bcount = *count; 900 901 sdminphys(&B); 902 903 *count = B.b_bcount; 904 } 905 906 static int 907 sdread(dev_t dev, struct uio *uio, int ioflag) 908 { 909 910 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 911 } 912 913 static int 914 sdwrite(dev_t dev, struct uio *uio, int ioflag) 915 { 916 917 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 918 } 919 920 /* 921 * Perform special action on behalf of the user 922 * Knows about the internals of this device 923 */ 924 static int 925 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 926 { 927 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 928 struct dk_softc *dksc = &sd->sc_dksc; 929 struct scsipi_periph *periph = sd->sc_periph; 930 931 int part = SDPART(dev); 932 int error; 933 934 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 935 936 /* 937 * If the device is not valid, some IOCTLs can still be 938 * handled on the raw partition. Check this here. 939 */ 940 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 941 part != RAW_PART) 942 return (EIO); 943 944 switch (cmd) { 945 case DIOCLOCK: 946 if (periph->periph_flags & PERIPH_REMOVABLE) 947 return (scsipi_prevent(periph, 948 (*(int *)addr) ? 949 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 950 else 951 return (ENOTTY); 952 953 case DIOCEJECT: 954 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 955 return (ENOTTY); 956 if (*(int *)addr == 0) { 957 /* 958 * Don't force eject: check that we are the only 959 * partition open. If so, unlock it. 960 */ 961 if (DK_BUSY(dksc, part) == 0) { 962 error = scsipi_prevent(periph, SPAMR_ALLOW, 963 XS_CTL_IGNORE_NOT_READY); 964 if (error) 965 return (error); 966 } else { 967 return (EBUSY); 968 } 969 } 970 /* FALLTHROUGH */ 971 case ODIOCEJECT: 972 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 973 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 974 975 case DIOCGCACHE: 976 return (sd_getcache(sd, (int *) addr)); 977 978 case DIOCSCACHE: 979 if ((flag & FWRITE) == 0) 980 return (EBADF); 981 return (sd_setcache(sd, *(int *) addr)); 982 983 case DIOCCACHESYNC: 984 /* 985 * XXX Do we really need to care about having a writable 986 * file descriptor here? 987 */ 988 if ((flag & FWRITE) == 0) 989 return (EBADF); 990 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 991 error = sd_flush(sd, 0); 992 if (error) { 993 sd->flags &= ~SDF_FLUSHING; 994 return (error); 995 } 996 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 997 } 998 return (0); 999 1000 default: 1001 error = dk_ioctl(dksc, dev, cmd, addr, flag, l); 1002 if (error == ENOTTY) 1003 error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l); 1004 return (error); 1005 } 1006 1007 #ifdef DIAGNOSTIC 1008 panic("sdioctl: impossible"); 1009 #endif 1010 } 1011 1012 static void 1013 sd_label(device_t self, struct disklabel *lp) 1014 { 1015 struct sd_softc *sd = device_private(self); 1016 1017 strncpy(lp->d_typename, sd->name, 16); 1018 lp->d_rpm = sd->params.rot_rate; 1019 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) 1020 lp->d_flags |= D_REMOVABLE; 1021 } 1022 1023 static bool 1024 sd_shutdown(device_t self, int how) 1025 { 1026 struct sd_softc *sd = device_private(self); 1027 struct dk_softc *dksc = &sd->sc_dksc; 1028 1029 /* 1030 * If the disk cache needs to be flushed, and the disk supports 1031 * it, flush it. We're cold at this point, so we poll for 1032 * completion. 1033 */ 1034 if ((sd->flags & SDF_DIRTY) != 0) { 1035 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1036 aprint_error_dev(dksc->sc_dev, 1037 "cache synchronization failed\n"); 1038 sd->flags &= ~SDF_FLUSHING; 1039 } else 1040 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1041 } 1042 return true; 1043 } 1044 1045 static bool 1046 sd_suspend(device_t dv, const pmf_qual_t *qual) 1047 { 1048 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1049 } 1050 1051 /* 1052 * Check Errors 1053 */ 1054 static int 1055 sd_interpret_sense(struct scsipi_xfer *xs) 1056 { 1057 struct scsipi_periph *periph = xs->xs_periph; 1058 struct scsipi_channel *chan = periph->periph_channel; 1059 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1060 struct sd_softc *sd = device_private(periph->periph_dev); 1061 struct dk_softc *dksc = &sd->sc_dksc; 1062 int error, retval = EJUSTRETURN; 1063 1064 /* 1065 * If the periph is already recovering, just do the normal 1066 * error processing. 1067 */ 1068 if (periph->periph_flags & PERIPH_RECOVERING) 1069 return (retval); 1070 1071 /* 1072 * Ignore errors from accessing illegal fields (e.g. trying to 1073 * lock the door of a digicam, which doesn't have a door that 1074 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1075 */ 1076 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1077 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1078 sense->asc == 0x24 && 1079 sense->ascq == 0x00) { /* Illegal field in CDB */ 1080 if (!(xs->xs_control & XS_CTL_SILENT)) { 1081 scsipi_printaddr(periph); 1082 printf("no door lock\n"); 1083 } 1084 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1085 return (retval); 1086 } 1087 1088 1089 1090 /* 1091 * If the device is not open yet, let the generic code handle it. 1092 */ 1093 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1094 return (retval); 1095 1096 /* 1097 * If it isn't a extended or extended/deferred error, let 1098 * the generic code handle it. 1099 */ 1100 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1101 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1102 return (retval); 1103 1104 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1105 sense->asc == 0x4) { 1106 if (sense->ascq == 0x01) { 1107 /* 1108 * Unit In The Process Of Becoming Ready. 1109 */ 1110 printf("%s: waiting for pack to spin up...\n", 1111 dksc->sc_xname); 1112 if (!callout_pending(&periph->periph_callout)) 1113 scsipi_periph_freeze(periph, 1); 1114 callout_reset(&periph->periph_callout, 1115 5 * hz, scsipi_periph_timed_thaw, periph); 1116 retval = ERESTART; 1117 } else if (sense->ascq == 0x02) { 1118 printf("%s: pack is stopped, restarting...\n", 1119 dksc->sc_xname); 1120 mutex_enter(chan_mtx(chan)); 1121 periph->periph_flags |= PERIPH_RECOVERING; 1122 mutex_exit(chan_mtx(chan)); 1123 error = scsipi_start(periph, SSS_START, 1124 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1125 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1126 if (error) { 1127 aprint_error_dev(dksc->sc_dev, 1128 "unable to restart pack\n"); 1129 retval = error; 1130 } else 1131 retval = ERESTART; 1132 mutex_enter(chan_mtx(chan)); 1133 periph->periph_flags &= ~PERIPH_RECOVERING; 1134 mutex_exit(chan_mtx(chan)); 1135 } 1136 } 1137 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1138 sense->asc == 0x31 && 1139 sense->ascq == 0x00) { /* maybe for any asq ? */ 1140 /* Medium Format Corrupted */ 1141 retval = EFTYPE; 1142 } 1143 return (retval); 1144 } 1145 1146 1147 static int 1148 sdsize(dev_t dev) 1149 { 1150 struct sd_softc *sd; 1151 struct dk_softc *dksc; 1152 int unit; 1153 1154 unit = SDUNIT(dev); 1155 sd = device_lookup_private(&sd_cd, unit); 1156 if (sd == NULL) 1157 return (-1); 1158 dksc = &sd->sc_dksc; 1159 1160 if (!device_is_active(dksc->sc_dev)) 1161 return (-1); 1162 1163 return dk_size(dksc, dev); 1164 } 1165 1166 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1167 static struct scsipi_xfer sx; 1168 1169 /* 1170 * dump all of physical memory into the partition specified, starting 1171 * at offset 'dumplo' into the partition. 1172 */ 1173 static int 1174 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1175 { 1176 struct sd_softc *sd; 1177 struct dk_softc *dksc; 1178 struct scsipi_periph *periph; 1179 int unit; 1180 1181 unit = SDUNIT(dev); 1182 if ((sd = device_lookup_private(&sd_cd, unit)) == NULL) 1183 return (ENXIO); 1184 dksc = &sd->sc_dksc; 1185 1186 if (!device_is_active(dksc->sc_dev)) 1187 return (ENODEV); 1188 1189 periph = sd->sc_periph; 1190 1191 /* Make sure it was initialized. */ 1192 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1193 return (ENXIO); 1194 1195 return dk_dump(dksc, dev, blkno, va, size); 1196 } 1197 1198 static int 1199 sd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1200 { 1201 struct sd_softc *sd = device_private(dev); 1202 struct dk_softc *dksc = &sd->sc_dksc; 1203 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1204 struct scsipi_rw_10 cmd; /* write command */ 1205 struct scsipi_xfer *xs; /* ... convenience */ 1206 struct scsipi_periph *periph; 1207 struct scsipi_channel *chan; 1208 size_t sectorsize; 1209 1210 periph = sd->sc_periph; 1211 chan = periph->periph_channel; 1212 1213 sectorsize = dg->dg_secsize; 1214 1215 xs = &sx; 1216 1217 #ifndef SD_DUMP_NOT_TRUSTED 1218 /* 1219 * Fill out the scsi command 1220 */ 1221 memset(&cmd, 0, sizeof(cmd)); 1222 cmd.opcode = WRITE_10; 1223 _lto4b(blkno, cmd.addr); 1224 _lto2b(nblk, cmd.length); 1225 /* 1226 * Fill out the scsipi_xfer structure 1227 * Note: we cannot sleep as we may be an interrupt 1228 * don't use scsipi_command() as it may want to wait 1229 * for an xs. 1230 */ 1231 memset(xs, 0, sizeof(sx)); 1232 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1233 XS_CTL_DATA_OUT; 1234 xs->xs_status = 0; 1235 xs->xs_periph = periph; 1236 xs->xs_retries = SDRETRIES; 1237 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1238 xs->cmd = (struct scsipi_generic *)&cmd; 1239 xs->cmdlen = sizeof(cmd); 1240 xs->resid = nblk * sectorsize; 1241 xs->error = XS_NOERROR; 1242 xs->bp = 0; 1243 xs->data = va; 1244 xs->datalen = nblk * sectorsize; 1245 callout_init(&xs->xs_callout, 0); 1246 1247 /* 1248 * Pass all this info to the scsi driver. 1249 */ 1250 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1251 if ((xs->xs_status & XS_STS_DONE) == 0 || 1252 xs->error != XS_NOERROR) 1253 return (EIO); 1254 #else /* SD_DUMP_NOT_TRUSTED */ 1255 /* Let's just talk about this first... */ 1256 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1257 delay(500 * 1000); /* half a second */ 1258 #endif /* SD_DUMP_NOT_TRUSTED */ 1259 1260 return (0); 1261 } 1262 1263 static int 1264 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1265 int page, int flags, int *big) 1266 { 1267 1268 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1269 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1270 *big = 1; 1271 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1272 size + sizeof(struct scsi_mode_parameter_header_10), 1273 flags, SDRETRIES, 6000); 1274 } else { 1275 *big = 0; 1276 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1277 size + sizeof(struct scsi_mode_parameter_header_6), 1278 flags, SDRETRIES, 6000); 1279 } 1280 } 1281 1282 static int 1283 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1284 int flags, int big) 1285 { 1286 1287 if (big) { 1288 struct scsi_mode_parameter_header_10 *header = sense; 1289 1290 _lto2b(0, header->data_length); 1291 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1292 size + sizeof(struct scsi_mode_parameter_header_10), 1293 flags, SDRETRIES, 6000); 1294 } else { 1295 struct scsi_mode_parameter_header_6 *header = sense; 1296 1297 header->data_length = 0; 1298 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1299 size + sizeof(struct scsi_mode_parameter_header_6), 1300 flags, SDRETRIES, 6000); 1301 } 1302 } 1303 1304 /* 1305 * sd_validate_blksize: 1306 * 1307 * Validate the block size. Print error if periph is specified, 1308 */ 1309 static int 1310 sd_validate_blksize(struct scsipi_periph *periph, int len) 1311 { 1312 1313 switch (len) { 1314 case 256: 1315 case 512: 1316 case 1024: 1317 case 2048: 1318 case 4096: 1319 return 1; 1320 } 1321 1322 if (periph) { 1323 scsipi_printaddr(periph); 1324 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1325 (len ^ (1 << (ffs(len) - 1))) ? 1326 "preposterous" : "unsupported", 1327 len, SD_DEFAULT_BLKSIZE); 1328 } 1329 1330 return 0; 1331 } 1332 1333 /* 1334 * sd_read_capacity: 1335 * 1336 * Find out from the device what its capacity is. 1337 */ 1338 static u_int64_t 1339 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1340 { 1341 union { 1342 struct scsipi_read_capacity_10 cmd; 1343 struct scsipi_read_capacity_16 cmd16; 1344 } cmd; 1345 union { 1346 struct scsipi_read_capacity_10_data data; 1347 struct scsipi_read_capacity_16_data data16; 1348 } *datap; 1349 uint64_t rv; 1350 1351 memset(&cmd, 0, sizeof(cmd)); 1352 cmd.cmd.opcode = READ_CAPACITY_10; 1353 1354 /* 1355 * Don't allocate data buffer on stack; 1356 * The lower driver layer might use the same stack and 1357 * if it uses region which is in the same cacheline, 1358 * cache flush ops against the data buffer won't work properly. 1359 */ 1360 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1361 if (datap == NULL) 1362 return 0; 1363 1364 /* 1365 * If the command works, interpret the result as a 4 byte 1366 * number of blocks 1367 */ 1368 rv = 0; 1369 memset(datap, 0, sizeof(datap->data)); 1370 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1371 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1372 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1373 goto out; 1374 1375 if (_4btol(datap->data.addr) != 0xffffffff) { 1376 *blksize = _4btol(datap->data.length); 1377 rv = _4btol(datap->data.addr) + 1; 1378 goto out; 1379 } 1380 1381 /* 1382 * Device is larger than can be reflected by READ CAPACITY (10). 1383 * Try READ CAPACITY (16). 1384 */ 1385 1386 memset(&cmd, 0, sizeof(cmd)); 1387 cmd.cmd16.opcode = READ_CAPACITY_16; 1388 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1389 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1390 1391 memset(datap, 0, sizeof(datap->data16)); 1392 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1393 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1394 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1395 goto out; 1396 1397 *blksize = _4btol(datap->data16.length); 1398 rv = _8btol(datap->data16.addr) + 1; 1399 1400 out: 1401 free(datap, M_TEMP); 1402 return rv; 1403 } 1404 1405 static int 1406 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1407 { 1408 struct { 1409 struct scsi_mode_parameter_header_6 header; 1410 /* no block descriptor */ 1411 u_int8_t pg_code; /* page code (should be 6) */ 1412 u_int8_t pg_length; /* page length (should be 11) */ 1413 u_int8_t wcd; /* bit0: cache disable */ 1414 u_int8_t lbs[2]; /* logical block size */ 1415 u_int8_t size[5]; /* number of log. blocks */ 1416 u_int8_t pp; /* power/performance */ 1417 u_int8_t flags; 1418 u_int8_t resvd; 1419 } scsipi_sense; 1420 u_int64_t blocks; 1421 int error, blksize; 1422 1423 /* 1424 * sd_read_capacity (ie "read capacity") and mode sense page 6 1425 * give the same information. Do both for now, and check 1426 * for consistency. 1427 * XXX probably differs for removable media 1428 */ 1429 dp->blksize = SD_DEFAULT_BLKSIZE; 1430 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1431 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1432 1433 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1434 &scsipi_sense.header, sizeof(scsipi_sense), 1435 flags, SDRETRIES, 6000); 1436 1437 if (error != 0) 1438 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1439 1440 dp->blksize = blksize; 1441 if (!sd_validate_blksize(NULL, dp->blksize)) 1442 dp->blksize = _2btol(scsipi_sense.lbs); 1443 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1444 dp->blksize = SD_DEFAULT_BLKSIZE; 1445 1446 /* 1447 * Create a pseudo-geometry. 1448 */ 1449 dp->heads = 64; 1450 dp->sectors = 32; 1451 dp->cyls = blocks / (dp->heads * dp->sectors); 1452 dp->disksize = _5btol(scsipi_sense.size); 1453 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1454 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1455 (unsigned long long)dp->disksize, 1456 (unsigned long long)blocks); 1457 dp->disksize = blocks; 1458 } 1459 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1460 1461 return (SDGP_RESULT_OK); 1462 } 1463 1464 /* 1465 * Get the scsi driver to send a full inquiry to the * device and use the 1466 * results to fill out the disk parameter structure. 1467 */ 1468 static int 1469 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1470 { 1471 u_int64_t blocks; 1472 int error, blksize; 1473 #if 0 1474 int i; 1475 u_int8_t *p; 1476 #endif 1477 1478 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1479 flags); 1480 if (blocks == 0) { 1481 struct scsipi_read_format_capacities cmd; 1482 struct { 1483 struct scsipi_capacity_list_header header; 1484 struct scsipi_capacity_descriptor desc; 1485 } __packed data; 1486 1487 memset(&cmd, 0, sizeof(cmd)); 1488 memset(&data, 0, sizeof(data)); 1489 cmd.opcode = READ_FORMAT_CAPACITIES; 1490 _lto2b(sizeof(data), cmd.length); 1491 1492 error = scsipi_command(sd->sc_periph, 1493 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1494 SDRETRIES, 20000, NULL, 1495 flags | XS_CTL_DATA_IN); 1496 if (error == EFTYPE) { 1497 /* Medium Format Corrupted, handle as not formatted */ 1498 return (SDGP_RESULT_UNFORMATTED); 1499 } 1500 if (error || data.header.length == 0) 1501 return (SDGP_RESULT_OFFLINE); 1502 1503 #if 0 1504 printf("rfc: length=%d\n", data.header.length); 1505 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"); 1506 #endif 1507 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1508 case SCSIPI_CAP_DESC_CODE_RESERVED: 1509 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1510 break; 1511 1512 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1513 return (SDGP_RESULT_UNFORMATTED); 1514 1515 case SCSIPI_CAP_DESC_CODE_NONE: 1516 return (SDGP_RESULT_OFFLINE); 1517 } 1518 1519 dp->disksize = blocks = _4btol(data.desc.nblks); 1520 if (blocks == 0) 1521 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1522 1523 blksize = _3btol(data.desc.blklen); 1524 1525 } else if (!sd_validate_blksize(NULL, blksize)) { 1526 struct sd_mode_sense_data scsipi_sense; 1527 int big, bsize; 1528 struct scsi_general_block_descriptor *bdesc; 1529 1530 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1531 error = sd_mode_sense(sd, 0, &scsipi_sense, 1532 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1533 if (!error) { 1534 if (big) { 1535 bdesc = (void *)(&scsipi_sense.header.big + 1); 1536 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1537 } else { 1538 bdesc = (void *)(&scsipi_sense.header.small + 1); 1539 bsize = scsipi_sense.header.small.blk_desc_len; 1540 } 1541 1542 #if 0 1543 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1544 printf("page 0 bsize=%d\n", bsize); 1545 printf("page 0 ok\n"); 1546 #endif 1547 1548 if (bsize >= 8) { 1549 blksize = _3btol(bdesc->blklen); 1550 } 1551 } 1552 } 1553 1554 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1555 blksize = SD_DEFAULT_BLKSIZE; 1556 1557 dp->blksize = blksize; 1558 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1559 return (0); 1560 } 1561 1562 static int 1563 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1564 { 1565 struct sd_mode_sense_data scsipi_sense; 1566 int error; 1567 int big, byte2; 1568 size_t poffset; 1569 union scsi_disk_pages *pages; 1570 1571 byte2 = SMS_DBD; 1572 again: 1573 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1574 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1575 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1576 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1577 flags | XS_CTL_SILENT, &big); 1578 if (error) { 1579 if (byte2 == SMS_DBD) { 1580 /* No result; try once more with DBD off */ 1581 byte2 = 0; 1582 goto again; 1583 } 1584 return (error); 1585 } 1586 1587 if (big) { 1588 poffset = sizeof scsipi_sense.header.big; 1589 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1590 } else { 1591 poffset = sizeof scsipi_sense.header.small; 1592 poffset += scsipi_sense.header.small.blk_desc_len; 1593 } 1594 1595 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1596 return ERESTART; 1597 1598 pages = (void *)((u_long)&scsipi_sense + poffset); 1599 #if 0 1600 { 1601 size_t i; 1602 u_int8_t *p; 1603 1604 printf("page 4 sense:"); 1605 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1606 i--, p++) 1607 printf(" %02x", *p); 1608 printf("\n"); 1609 printf("page 4 pg_code=%d sense=%p/%p\n", 1610 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1611 } 1612 #endif 1613 1614 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1615 return (ERESTART); 1616 1617 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1618 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1619 _3btol(pages->rigid_geometry.ncyl), 1620 pages->rigid_geometry.nheads, 1621 _2btol(pages->rigid_geometry.st_cyl_wp), 1622 _2btol(pages->rigid_geometry.st_cyl_rwc), 1623 _2btol(pages->rigid_geometry.land_zone))); 1624 1625 /* 1626 * KLUDGE!! (for zone recorded disks) 1627 * give a number of sectors so that sec * trks * cyls 1628 * is <= disk_size 1629 * can lead to wasted space! THINK ABOUT THIS ! 1630 */ 1631 dp->heads = pages->rigid_geometry.nheads; 1632 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1633 if (dp->heads == 0 || dp->cyls == 0) 1634 return (ERESTART); 1635 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1636 1637 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1638 if (dp->rot_rate == 0) 1639 dp->rot_rate = 3600; 1640 1641 #if 0 1642 printf("page 4 ok\n"); 1643 #endif 1644 return (0); 1645 } 1646 1647 static int 1648 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1649 { 1650 struct sd_mode_sense_data scsipi_sense; 1651 int error; 1652 int big, byte2; 1653 size_t poffset; 1654 union scsi_disk_pages *pages; 1655 1656 byte2 = SMS_DBD; 1657 again: 1658 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1659 error = sd_mode_sense(sd, 0, &scsipi_sense, 1660 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1661 sizeof(scsipi_sense.pages.flex_geometry), 5, 1662 flags | XS_CTL_SILENT, &big); 1663 if (error) { 1664 if (byte2 == SMS_DBD) { 1665 /* No result; try once more with DBD off */ 1666 byte2 = 0; 1667 goto again; 1668 } 1669 return (error); 1670 } 1671 1672 if (big) { 1673 poffset = sizeof scsipi_sense.header.big; 1674 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1675 } else { 1676 poffset = sizeof scsipi_sense.header.small; 1677 poffset += scsipi_sense.header.small.blk_desc_len; 1678 } 1679 1680 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 1681 return ERESTART; 1682 1683 pages = (void *)((u_long)&scsipi_sense + poffset); 1684 #if 0 1685 { 1686 size_t i; 1687 u_int8_t *p; 1688 1689 printf("page 5 sense:"); 1690 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1691 i--, p++) 1692 printf(" %02x", *p); 1693 printf("\n"); 1694 printf("page 5 pg_code=%d sense=%p/%p\n", 1695 pages->flex_geometry.pg_code, &scsipi_sense, pages); 1696 } 1697 #endif 1698 1699 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1700 return (ERESTART); 1701 1702 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1703 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1704 _3btol(pages->flex_geometry.ncyl), 1705 pages->flex_geometry.nheads, 1706 pages->flex_geometry.ph_sec_tr, 1707 _2btol(pages->flex_geometry.bytes_s))); 1708 1709 dp->heads = pages->flex_geometry.nheads; 1710 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1711 dp->sectors = pages->flex_geometry.ph_sec_tr; 1712 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1713 return (ERESTART); 1714 1715 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1716 if (dp->rot_rate == 0) 1717 dp->rot_rate = 3600; 1718 1719 #if 0 1720 printf("page 5 ok\n"); 1721 #endif 1722 return (0); 1723 } 1724 1725 static int 1726 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1727 { 1728 struct dk_softc *dksc = &sd->sc_dksc; 1729 int error; 1730 1731 /* 1732 * If offline, the SDEV_MEDIA_LOADED flag will be 1733 * cleared by the caller if necessary. 1734 */ 1735 if (sd->type == T_SIMPLE_DIRECT) { 1736 error = sd_get_simplifiedparms(sd, dp, flags); 1737 if (!error) 1738 goto setprops; 1739 return (error); 1740 } 1741 1742 error = sd_get_capacity(sd, dp, flags); 1743 if (error) 1744 return (error); 1745 1746 if (sd->type == T_OPTICAL) 1747 goto page0; 1748 1749 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1750 if (!sd_get_parms_page5(sd, dp, flags) || 1751 !sd_get_parms_page4(sd, dp, flags)) 1752 goto setprops; 1753 } else { 1754 if (!sd_get_parms_page4(sd, dp, flags) || 1755 !sd_get_parms_page5(sd, dp, flags)) 1756 goto setprops; 1757 } 1758 1759 page0: 1760 printf("%s: fabricating a geometry\n", dksc->sc_xname); 1761 /* Try calling driver's method for figuring out geometry. */ 1762 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1763 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1764 (sd->sc_periph, dp, dp->disksize)) { 1765 /* 1766 * Use adaptec standard fictitious geometry 1767 * this depends on which controller (e.g. 1542C is 1768 * different. but we have to put SOMETHING here..) 1769 */ 1770 dp->heads = 64; 1771 dp->sectors = 32; 1772 dp->cyls = dp->disksize / (64 * 32); 1773 } 1774 dp->rot_rate = 3600; 1775 1776 setprops: 1777 sd_set_geometry(sd); 1778 1779 return (SDGP_RESULT_OK); 1780 } 1781 1782 static int 1783 sd_flush(struct sd_softc *sd, int flags) 1784 { 1785 struct scsipi_periph *periph = sd->sc_periph; 1786 struct scsi_synchronize_cache_10 cmd; 1787 1788 /* 1789 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1790 * We issue with address 0 length 0, which should be 1791 * interpreted by the device as "all remaining blocks 1792 * starting at address 0". We ignore ILLEGAL REQUEST 1793 * in the event that the command is not supported by 1794 * the device, and poll for completion so that we know 1795 * that the cache has actually been flushed. 1796 * 1797 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1798 * command, as indicated by our quirks flags. 1799 * 1800 * XXX What about older devices? 1801 */ 1802 if (periph->periph_version < 2 || 1803 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1804 return (0); 1805 1806 sd->flags |= SDF_FLUSHING; 1807 memset(&cmd, 0, sizeof(cmd)); 1808 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1809 1810 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1811 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1812 } 1813 1814 static int 1815 sd_getcache(struct sd_softc *sd, int *bitsp) 1816 { 1817 struct scsipi_periph *periph = sd->sc_periph; 1818 struct sd_mode_sense_data scsipi_sense; 1819 int error, bits = 0; 1820 int big; 1821 union scsi_disk_pages *pages; 1822 uint8_t dev_spec; 1823 1824 /* only SCSI-2 and later supported */ 1825 if (periph->periph_version < 2) 1826 return (EOPNOTSUPP); 1827 1828 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1829 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1830 sizeof(scsipi_sense.pages.caching_params), 8, XS_CTL_SILENT, &big); 1831 if (error) 1832 return (error); 1833 1834 if (big) { 1835 pages = (void *)(&scsipi_sense.header.big + 1); 1836 dev_spec = scsipi_sense.header.big.dev_spec; 1837 } else { 1838 pages = (void *)(&scsipi_sense.header.small + 1); 1839 dev_spec = scsipi_sense.header.small.dev_spec; 1840 } 1841 1842 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1843 bits |= DKCACHE_READ; 1844 if (pages->caching_params.flags & CACHING_WCE) 1845 bits |= DKCACHE_WRITE; 1846 if (pages->caching_params.pg_code & PGCODE_PS) 1847 bits |= DKCACHE_SAVE; 1848 1849 /* 1850 * Support for FUA/DPO, defined starting with SCSI-2. Use only 1851 * if device claims to support it, according to the MODE SENSE. 1852 */ 1853 if (!(periph->periph_quirks & PQUIRK_NOFUA) && 1854 ISSET(dev_spec, SMH_DSP_DPOFUA)) 1855 bits |= DKCACHE_FUA | DKCACHE_DPO; 1856 1857 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1858 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1859 sizeof(scsipi_sense.pages.caching_params), 1860 SMS_PCTRL_CHANGEABLE|8, XS_CTL_SILENT, &big); 1861 if (error == 0) { 1862 if (big) 1863 pages = (void *)(&scsipi_sense.header.big + 1); 1864 else 1865 pages = (void *)(&scsipi_sense.header.small + 1); 1866 1867 if (pages->caching_params.flags & CACHING_RCD) 1868 bits |= DKCACHE_RCHANGE; 1869 if (pages->caching_params.flags & CACHING_WCE) 1870 bits |= DKCACHE_WCHANGE; 1871 } 1872 1873 *bitsp = bits; 1874 1875 return (0); 1876 } 1877 1878 static int 1879 sd_setcache(struct sd_softc *sd, int bits) 1880 { 1881 struct scsipi_periph *periph = sd->sc_periph; 1882 struct sd_mode_sense_data scsipi_sense; 1883 int error; 1884 uint8_t oflags, byte2 = 0; 1885 int big; 1886 union scsi_disk_pages *pages; 1887 1888 if (periph->periph_version < 2) 1889 return (EOPNOTSUPP); 1890 1891 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1892 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1893 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1894 if (error) 1895 return (error); 1896 1897 if (big) 1898 pages = (void *)(&scsipi_sense.header.big + 1); 1899 else 1900 pages = (void *)(&scsipi_sense.header.small + 1); 1901 1902 oflags = pages->caching_params.flags; 1903 1904 if (bits & DKCACHE_READ) 1905 pages->caching_params.flags &= ~CACHING_RCD; 1906 else 1907 pages->caching_params.flags |= CACHING_RCD; 1908 1909 if (bits & DKCACHE_WRITE) 1910 pages->caching_params.flags |= CACHING_WCE; 1911 else 1912 pages->caching_params.flags &= ~CACHING_WCE; 1913 1914 if (oflags == pages->caching_params.flags) 1915 return (0); 1916 1917 pages->caching_params.pg_code &= PGCODE_MASK; 1918 1919 if (bits & DKCACHE_SAVE) 1920 byte2 |= SMS_SP; 1921 1922 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 1923 sizeof(struct scsi_mode_page_header) + 1924 pages->caching_params.pg_length, 0, big)); 1925 } 1926 1927 static void 1928 sd_set_geometry(struct sd_softc *sd) 1929 { 1930 struct dk_softc *dksc = &sd->sc_dksc; 1931 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1932 1933 memset(dg, 0, sizeof(*dg)); 1934 1935 dg->dg_secperunit = sd->params.disksize; 1936 dg->dg_secsize = sd->params.blksize; 1937 dg->dg_nsectors = sd->params.sectors; 1938 dg->dg_ntracks = sd->params.heads; 1939 dg->dg_ncylinders = sd->params.cyls; 1940 1941 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, sd->typename); 1942 } 1943
Indexes created Mon Sep 22 21:09:42 GMT 2025