sd.c revision 1.339
1 /* $NetBSD: sd.c,v 1.339 2025/02/27 15:23:44 jakllsch 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 1.339 2025/02/27 15:23:44 jakllsch 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_cfdriver = &sd_cd, 171 .d_devtounit = disklabel_dev_unit, 172 .d_flag = D_DISK | D_MPSAFE 173 }; 174 175 const struct cdevsw sd_cdevsw = { 176 .d_open = sdopen, 177 .d_close = sdclose, 178 .d_read = sdread, 179 .d_write = sdwrite, 180 .d_ioctl = sdioctl, 181 .d_stop = nostop, 182 .d_tty = notty, 183 .d_poll = nopoll, 184 .d_mmap = nommap, 185 .d_kqfilter = nokqfilter, 186 .d_discard = nodiscard, 187 .d_cfdriver = &sd_cd, 188 .d_devtounit = disklabel_dev_unit, 189 .d_flag = D_DISK | D_MPSAFE 190 }; 191 192 static const struct dkdriver sddkdriver = { 193 .d_open = sdopen, 194 .d_close = sdclose, 195 .d_strategy = sdstrategy, 196 .d_minphys = sdminphys, 197 .d_diskstart = sd_diskstart, 198 .d_dumpblocks = sd_dumpblocks, 199 .d_iosize = sd_iosize, 200 .d_firstopen = sd_firstopen, 201 .d_lastclose = sd_lastclose, 202 .d_label = sd_label, 203 }; 204 205 static const struct scsipi_periphsw sd_switch = { 206 sd_interpret_sense, /* check our error handler first */ 207 sdstart, /* have a queue, served by this */ 208 NULL, /* have no async handler */ 209 sddone, /* deal with stats at interrupt time */ 210 }; 211 212 struct sd_mode_sense_data { 213 /* 214 * XXX 215 * We are not going to parse this as-is -- it just has to be large 216 * enough. 217 */ 218 union { 219 struct scsi_mode_parameter_header_6 small; 220 struct scsi_mode_parameter_header_10 big; 221 } header; 222 struct scsi_general_block_descriptor blk_desc; 223 union scsi_disk_pages pages; 224 }; 225 226 /* 227 * The routine called by the low level scsi routine when it discovers 228 * A device suitable for this driver 229 */ 230 static int 231 sdmatch(device_t parent, cfdata_t match, 232 void *aux) 233 { 234 struct scsipibus_attach_args *sa = aux; 235 int priority; 236 237 (void)scsipi_inqmatch(&sa->sa_inqbuf, 238 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 239 sizeof(sd_patterns[0]), &priority); 240 241 return (priority); 242 } 243 244 /* 245 * Attach routine common to atapi & scsi. 246 */ 247 static void 248 sdattach(device_t parent, device_t self, void *aux) 249 { 250 struct sd_softc *sd = device_private(self); 251 struct dk_softc *dksc = &sd->sc_dksc; 252 struct scsipibus_attach_args *sa = aux; 253 struct scsipi_periph *periph = sa->sa_periph; 254 int error, result, dtype; 255 struct disk_parms *dp = &sd->params; 256 char pbuf[9]; 257 258 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 259 260 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 261 memcpy(sd->name, sa->sa_inqbuf.product, uimin(16, sizeof(sd->name))); 262 memcpy(sd->typename, sa->sa_inqbuf.product, uimin(16, sizeof(sd->typename))); 263 264 if (sd->type == T_SIMPLE_DIRECT) 265 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 266 267 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph))) { 268 case SCSIPI_BUSTYPE_SCSI: 269 dtype = DKTYPE_SCSI; 270 if (periph->periph_version == 0) 271 sd->flags |= SDF_ANCIENT; 272 break; 273 case SCSIPI_BUSTYPE_ATAPI: 274 dtype = DKTYPE_ATAPI; 275 break; 276 default: 277 dtype = DKTYPE_UNKNOWN; 278 break; 279 } 280 281 /* Initialize dk and disk structure. */ 282 dk_init(dksc, self, dtype); 283 disk_init(&dksc->sc_dkdev, dksc->sc_xname, &sddkdriver); 284 285 /* Attach dk and disk subsystems */ 286 dk_attach(dksc); 287 disk_attach(&dksc->sc_dkdev); 288 289 bufq_alloc(&dksc->sc_bufq, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 290 291 callout_init(&sd->sc_callout, 0); 292 293 /* 294 * Store information needed to contact our base driver 295 */ 296 sd->sc_periph = periph; 297 298 periph->periph_dev = dksc->sc_dev; 299 periph->periph_switch = &sd_switch; 300 301 /* 302 * Increase our openings to the maximum-per-periph 303 * supported by the adapter. This will either be 304 * clamped down or grown by the adapter if necessary. 305 */ 306 periph->periph_openings = 307 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 308 periph->periph_flags |= PERIPH_GROW_OPENINGS; 309 310 /* 311 * Use the subdriver to request information regarding the drive. 312 */ 313 aprint_naive("\n"); 314 aprint_normal("\n"); 315 316 if (periph->periph_quirks & PQUIRK_START) 317 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 318 319 error = scsipi_test_unit_ready(periph, 320 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 321 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 322 if (error) 323 result = SDGP_RESULT_OFFLINE; 324 else 325 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 326 327 aprint_normal_dev(dksc->sc_dev, ""); 328 switch (result) { 329 case SDGP_RESULT_OK: 330 format_bytes(pbuf, sizeof(pbuf), 331 (u_int64_t)dp->disksize * dp->blksize); 332 aprint_normal( 333 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 334 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 335 (unsigned long long)dp->disksize); 336 break; 337 338 case SDGP_RESULT_OFFLINE: 339 aprint_normal("drive offline"); 340 break; 341 342 case SDGP_RESULT_UNFORMATTED: 343 aprint_normal("unformatted media"); 344 break; 345 346 #ifdef DIAGNOSTIC 347 default: 348 panic("sdattach: unknown result from get_parms"); 349 break; 350 #endif 351 } 352 aprint_normal("\n"); 353 354 /* Discover wedges on this disk if it is online */ 355 if (result == SDGP_RESULT_OK) 356 dkwedge_discover(&dksc->sc_dkdev); 357 358 /* 359 * Establish a shutdown hook so that we can ensure that 360 * our data has actually made it onto the platter at 361 * shutdown time. Note that this relies on the fact 362 * that the shutdown hooks at the "leaves" of the device tree 363 * are run, first (thus guaranteeing that our hook runs before 364 * our ancestors'). 365 */ 366 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 367 aprint_error_dev(self, "couldn't establish power handler\n"); 368 } 369 370 static int 371 sddetach(device_t self, int flags) 372 { 373 struct sd_softc *sd = device_private(self); 374 struct dk_softc *dksc = &sd->sc_dksc; 375 struct scsipi_periph *periph = sd->sc_periph; 376 struct scsipi_channel *chan = periph->periph_channel; 377 int bmaj, cmaj, i, mn, rc; 378 379 if ((rc = disk_begindetach(&dksc->sc_dkdev, sd_lastclose, self, flags)) != 0) 380 return rc; 381 382 /* locate the major number */ 383 bmaj = bdevsw_lookup_major(&sd_bdevsw); 384 cmaj = cdevsw_lookup_major(&sd_cdevsw); 385 386 /* Nuke the vnodes for any open instances */ 387 for (i = 0; i < MAXPARTITIONS; i++) { 388 mn = SDMINOR(device_unit(self), i); 389 vdevgone(bmaj, mn, mn, VBLK); 390 vdevgone(cmaj, mn, mn, VCHR); 391 } 392 393 /* kill any pending restart */ 394 callout_halt(&sd->sc_callout, NULL); 395 396 dk_drain(dksc); 397 398 /* Kill off any pending commands. */ 399 mutex_enter(chan_mtx(chan)); 400 scsipi_kill_pending(periph); 401 mutex_exit(chan_mtx(chan)); 402 403 bufq_free(dksc->sc_bufq); 404 405 /* Delete all of our wedges. */ 406 dkwedge_delall(&dksc->sc_dkdev); 407 408 /* Detach from the disk list. */ 409 disk_detach(&dksc->sc_dkdev); 410 disk_destroy(&dksc->sc_dkdev); 411 412 dk_detach(dksc); 413 414 callout_destroy(&sd->sc_callout); 415 416 pmf_device_deregister(self); 417 418 return (0); 419 } 420 421 /* 422 * Serialized by caller 423 */ 424 static int 425 sd_firstopen(device_t self, dev_t dev, int flag, int fmt) 426 { 427 struct sd_softc *sd = device_private(self); 428 struct scsipi_periph *periph = sd->sc_periph; 429 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 430 int error, silent; 431 int part, removable; 432 433 part = SDPART(dev); 434 435 error = scsipi_adapter_addref(adapt); 436 if (error) 437 return error; 438 439 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 440 silent = XS_CTL_SILENT; 441 else 442 silent = 0; 443 444 /* Check that it is still responding and ok. */ 445 error = scsipi_test_unit_ready(periph, 446 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 447 silent); 448 449 /* 450 * Start the pack spinning if necessary. Always allow the 451 * raw partition to be opened, for raw IOCTLs. Data transfers 452 * will check for SDEV_MEDIA_LOADED. 453 */ 454 if (error == EIO) { 455 error = scsipi_start(periph, SSS_START, silent); 456 if (error == EINVAL) 457 error = EIO; 458 } 459 if (error) 460 goto bad; 461 462 removable = (periph->periph_flags & PERIPH_REMOVABLE) != 0; 463 if (removable) { 464 /* Lock the pack in. */ 465 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 466 XS_CTL_IGNORE_ILLEGAL_REQUEST | 467 XS_CTL_IGNORE_MEDIA_CHANGE | 468 XS_CTL_SILENT); 469 if (error) 470 goto bad; 471 } 472 473 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 474 int param_error; 475 476 /* 477 * Load the physical device parameters. 478 * 479 * Note that if media is present but unformatted, 480 * we allow the open (so that it can be formatted!). 481 * The drive should refuse real I/O, if the media is 482 * unformatted. 483 */ 484 param_error = sd_get_parms(sd, &sd->params, 0); 485 if (param_error == SDGP_RESULT_OFFLINE) { 486 error = ENXIO; 487 goto bad2; 488 } 489 periph->periph_flags |= PERIPH_MEDIA_LOADED; 490 491 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 492 } 493 494 periph->periph_flags |= PERIPH_OPEN; 495 return 0; 496 497 bad2: 498 if (removable) 499 scsipi_prevent(periph, SPAMR_ALLOW, 500 XS_CTL_IGNORE_ILLEGAL_REQUEST | 501 XS_CTL_IGNORE_MEDIA_CHANGE | 502 XS_CTL_SILENT); 503 504 bad: 505 scsipi_adapter_delref(adapt); 506 return error; 507 } 508 509 /* 510 * open the device. Make sure the partition info is a up-to-date as can be. 511 */ 512 static int 513 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 514 { 515 struct sd_softc *sd; 516 struct dk_softc *dksc; 517 struct scsipi_periph *periph; 518 int unit, part; 519 int error; 520 521 unit = SDUNIT(dev); 522 sd = device_lookup_private(&sd_cd, unit); 523 if (sd == NULL) 524 return (ENXIO); 525 dksc = &sd->sc_dksc; 526 527 if (!device_is_active(dksc->sc_dev)) 528 return (ENODEV); 529 530 periph = sd->sc_periph; 531 part = SDPART(dev); 532 533 SC_DEBUG(periph, SCSIPI_DB1, 534 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", 535 dev, unit, sd_cd.cd_ndevs, SDPART(dev))); 536 537 /* 538 * If any partition is open, but the disk has been invalidated, 539 * disallow further opens of non-raw partition 540 */ 541 if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) == 542 PERIPH_OPEN) { 543 if (part != RAW_PART || fmt != S_IFCHR) 544 return EIO; 545 } 546 547 error = dk_open(dksc, dev, flag, fmt, l); 548 549 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 550 551 return error; 552 } 553 554 /* 555 * Serialized by caller 556 */ 557 static int 558 sd_lastclose(device_t self) 559 { 560 struct sd_softc *sd = device_private(self); 561 struct dk_softc *dksc = &sd->sc_dksc; 562 struct scsipi_periph *periph = sd->sc_periph; 563 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 564 565 /* 566 * If the disk cache needs flushing, and the disk supports 567 * it, do it now. 568 */ 569 if ((sd->flags & SDF_DIRTY) != 0) { 570 if (sd_flush(sd, 0)) { 571 aprint_error_dev(dksc->sc_dev, 572 "cache synchronization failed\n"); 573 sd->flags &= ~SDF_FLUSHING; 574 } else 575 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 576 } 577 578 scsipi_wait_drain(periph); 579 580 if (periph->periph_flags & PERIPH_REMOVABLE) 581 scsipi_prevent(periph, SPAMR_ALLOW, 582 XS_CTL_IGNORE_ILLEGAL_REQUEST | 583 XS_CTL_IGNORE_NOT_READY | 584 XS_CTL_SILENT); 585 periph->periph_flags &= ~PERIPH_OPEN; 586 587 scsipi_wait_drain(periph); 588 589 scsipi_adapter_delref(adapt); 590 591 return 0; 592 } 593 594 /* 595 * close the device.. only called if we are the LAST occurrence of an open 596 * device. Convenient now but usually a pain. 597 */ 598 static int 599 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 600 { 601 struct sd_softc *sd; 602 struct dk_softc *dksc; 603 int unit; 604 605 unit = SDUNIT(dev); 606 sd = device_lookup_private(&sd_cd, unit); 607 dksc = &sd->sc_dksc; 608 609 return dk_close(dksc, dev, flag, fmt, l); 610 } 611 612 /* 613 * Actually translate the requested transfer into one the physical driver 614 * can understand. The transfer is described by a buf and will include 615 * only one physical transfer. 616 */ 617 static void 618 sdstrategy(struct buf *bp) 619 { 620 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 621 struct dk_softc *dksc = &sd->sc_dksc; 622 struct scsipi_periph *periph = sd->sc_periph; 623 624 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 625 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 626 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 627 628 /* 629 * If the device has been made invalid, error out 630 */ 631 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 632 !device_is_active(dksc->sc_dev)) { 633 if (periph->periph_flags & PERIPH_OPEN) 634 bp->b_error = EIO; 635 else 636 bp->b_error = ENODEV; 637 638 bp->b_resid = bp->b_bcount; 639 biodone(bp); 640 return; 641 } 642 643 dk_strategy(dksc, bp); 644 } 645 646 /* 647 * Issue single I/O command 648 * 649 * Called from dk_start and implicitly from dk_strategy 650 */ 651 static int 652 sd_diskstart(device_t dev, struct buf *bp) 653 { 654 struct sd_softc *sd = device_private(dev); 655 struct scsipi_periph *periph = sd->sc_periph; 656 struct scsipi_channel *chan = periph->periph_channel; 657 struct scsipi_rw_16 cmd16; 658 struct scsipi_rw_10 cmd_big; 659 struct scsi_rw_6 cmd_small; 660 struct scsipi_generic *cmdp; 661 struct scsipi_xfer *xs; 662 int error, flags, nblks, cmdlen; 663 int cdb_flags; 664 bool havefua = !(periph->periph_quirks & PQUIRK_NOFUA); 665 666 mutex_enter(chan_mtx(chan)); 667 668 if (periph->periph_active >= periph->periph_openings) { 669 error = EAGAIN; 670 goto out; 671 } 672 673 /* 674 * there is excess capacity, but a special waits 675 * It'll need the adapter as soon as we clear out of the 676 * way and let it run (user level wait). 677 */ 678 if (periph->periph_flags & PERIPH_WAITING) { 679 periph->periph_flags &= ~PERIPH_WAITING; 680 cv_broadcast(periph_cv_periph(periph)); 681 error = EAGAIN; 682 goto out; 683 } 684 685 /* 686 * If the device has become invalid, abort all the 687 * reads and writes until all files have been closed and 688 * re-opened. 689 */ 690 if (__predict_false( 691 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 692 error = EIO; 693 goto out; 694 } 695 696 /* 697 * Mark the disk dirty so that the cache will be 698 * flushed on close. 699 */ 700 if ((bp->b_flags & B_READ) == 0) 701 sd->flags |= SDF_DIRTY; 702 703 if (sd->params.blksize == DEV_BSIZE) 704 nblks = bp->b_bcount >> DEV_BSHIFT; 705 else 706 nblks = howmany(bp->b_bcount, sd->params.blksize); 707 708 /* 709 * Pass FUA and/or DPO if requested. Must be done before CDB 710 * selection, as 6-byte CDB doesn't support the flags. 711 */ 712 cdb_flags = 0; 713 if (havefua) { 714 if (bp->b_flags & B_MEDIA_FUA) 715 cdb_flags |= SRWB_FUA; 716 717 if (bp->b_flags & B_MEDIA_DPO) 718 cdb_flags |= SRWB_DPO; 719 } 720 721 /* 722 * Fill out the scsi command. Use the smallest CDB possible 723 * (6-byte, 10-byte, or 16-byte). If we need FUA or DPO, 724 * need to use 10-byte or bigger, as the 6-byte doesn't support 725 * the flags. 726 */ 727 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 728 ((nblks & 0xff) == nblks) && 729 !(periph->periph_quirks & PQUIRK_ONLYBIG) && 730 !cdb_flags) { 731 /* 6-byte CDB */ 732 memset(&cmd_small, 0, sizeof(cmd_small)); 733 cmd_small.opcode = (bp->b_flags & B_READ) ? 734 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 735 _lto3b(bp->b_rawblkno, cmd_small.addr); 736 cmd_small.length = nblks & 0xff; 737 cmdlen = sizeof(cmd_small); 738 cmdp = (struct scsipi_generic *)&cmd_small; 739 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 740 /* 10-byte CDB */ 741 memset(&cmd_big, 0, sizeof(cmd_big)); 742 cmd_big.opcode = (bp->b_flags & B_READ) ? 743 READ_10 : WRITE_10; 744 _lto4b(bp->b_rawblkno, cmd_big.addr); 745 _lto2b(nblks, cmd_big.length); 746 cmdlen = sizeof(cmd_big); 747 cmdp = (struct scsipi_generic *)&cmd_big; 748 } else { 749 /* 16-byte CDB */ 750 memset(&cmd16, 0, sizeof(cmd16)); 751 cmd16.opcode = (bp->b_flags & B_READ) ? 752 READ_16 : WRITE_16; 753 _lto8b(bp->b_rawblkno, cmd16.addr); 754 _lto4b(nblks, cmd16.length); 755 cmdlen = sizeof(cmd16); 756 cmdp = (struct scsipi_generic *)&cmd16; 757 } 758 759 if (cdb_flags) 760 cmdp->bytes[0] = cdb_flags; 761 762 /* 763 * Figure out what flags to use. 764 */ 765 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 766 if (bp->b_flags & B_READ) 767 flags |= XS_CTL_DATA_IN; 768 else 769 flags |= XS_CTL_DATA_OUT; 770 771 /* 772 * Call the routine that chats with the adapter. 773 * Note: we cannot sleep as we may be an interrupt 774 */ 775 xs = scsipi_make_xs_locked(periph, cmdp, cmdlen, 776 (u_char *)bp->b_data, bp->b_bcount, 777 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 778 if (__predict_false(xs == NULL)) { 779 /* 780 * out of memory. Keep this buffer in the queue, and 781 * retry later. 782 */ 783 callout_reset(&sd->sc_callout, hz / 2, sdrestart, sd); 784 error = EAGAIN; 785 goto out; 786 } 787 788 error = scsipi_execute_xs(xs); 789 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 790 KASSERT(error == 0); 791 792 out: 793 mutex_exit(chan_mtx(chan)); 794 795 return error; 796 } 797 798 /* 799 * Recover I/O request after memory shortage 800 * 801 * Called from callout 802 */ 803 static void 804 sdrestart(void *v) 805 { 806 struct sd_softc *sd = v; 807 struct dk_softc *dksc = &sd->sc_dksc; 808 809 dk_start(dksc, NULL); 810 } 811 812 /* 813 * Recover I/O request after memory shortage 814 * 815 * Called from scsipi midlayer when resources have been freed 816 * with channel lock held 817 */ 818 static void 819 sdstart(struct scsipi_periph *periph) 820 { 821 struct sd_softc *sd = device_private(periph->periph_dev); 822 struct dk_softc *dksc = &sd->sc_dksc; 823 struct scsipi_channel *chan = periph->periph_channel; 824 825 /* 826 * release channel lock as dk_start may need to acquire 827 * other locks 828 * 829 * sdstart is called from scsipi_put_xs and all its callers 830 * release the lock afterwards. So releasing it here 831 * doesn't matter. 832 */ 833 mutex_exit(chan_mtx(chan)); 834 835 dk_start(dksc, NULL); 836 837 mutex_enter(chan_mtx(chan)); 838 } 839 840 static void 841 sddone(struct scsipi_xfer *xs, int error) 842 { 843 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 844 struct dk_softc *dksc = &sd->sc_dksc; 845 struct buf *bp = xs->bp; 846 847 if (sd->flags & SDF_FLUSHING) { 848 /* Flush completed, no longer dirty. */ 849 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 850 } 851 852 if (bp) { 853 bp->b_error = error; 854 bp->b_resid = xs->resid; 855 if (error) { 856 /* on a read/write error bp->b_resid is zero, so fix */ 857 bp->b_resid = bp->b_bcount; 858 } 859 860 dk_done(dksc, bp); 861 /* dk_start is called from scsipi_complete */ 862 } 863 } 864 865 static void 866 sdminphys(struct buf *bp) 867 { 868 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 869 struct dk_softc *dksc = &sd->sc_dksc; 870 long xmax; 871 872 /* 873 * If the device is ancient, we want to make sure that 874 * the transfer fits into a 6-byte cdb. 875 * 876 * XXX Note that the SCSI-I spec says that 256-block transfers 877 * are allowed in a 6-byte read/write, and are specified 878 * by setting the "length" to 0. However, we're conservative 879 * here, allowing only 255-block transfers in case an 880 * ancient device gets confused by length == 0. A length of 0 881 * in a 10-byte read/write actually means 0 blocks. 882 */ 883 if ((sd->flags & SDF_ANCIENT) && 884 ((sd->sc_periph->periph_flags & 885 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 886 xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff; 887 888 if (bp->b_bcount > xmax) 889 bp->b_bcount = xmax; 890 } 891 892 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 893 } 894 895 static void 896 sd_iosize(device_t dev, int *count) 897 { 898 struct buf B; 899 int bmaj; 900 901 bmaj = bdevsw_lookup_major(&sd_bdevsw); 902 B.b_dev = MAKESDDEV(bmaj,device_unit(dev),RAW_PART); 903 B.b_bcount = *count; 904 905 sdminphys(&B); 906 907 *count = B.b_bcount; 908 } 909 910 static int 911 sdread(dev_t dev, struct uio *uio, int ioflag) 912 { 913 914 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 915 } 916 917 static int 918 sdwrite(dev_t dev, struct uio *uio, int ioflag) 919 { 920 921 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 922 } 923 924 /* 925 * Perform special action on behalf of the user 926 * Knows about the internals of this device 927 */ 928 static int 929 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 930 { 931 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 932 struct dk_softc *dksc = &sd->sc_dksc; 933 struct scsipi_periph *periph = sd->sc_periph; 934 935 int part = SDPART(dev); 936 int error; 937 938 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 939 940 /* 941 * If the device is not valid, some IOCTLs can still be 942 * handled on the raw partition. Check this here. 943 */ 944 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 945 part != RAW_PART) 946 return (EIO); 947 948 switch (cmd) { 949 case DIOCLOCK: 950 if (periph->periph_flags & PERIPH_REMOVABLE) 951 return (scsipi_prevent(periph, 952 (*(int *)addr) ? 953 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 954 else 955 return (ENOTTY); 956 957 case DIOCEJECT: 958 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 959 return (ENOTTY); 960 if (*(int *)addr == 0) { 961 int pmask = __BIT(part); 962 /* 963 * Don't force eject: check that we are the only 964 * partition open. If so, unlock it. 965 */ 966 if (DK_BUSY(dksc, pmask) == 0) { 967 error = scsipi_prevent(periph, SPAMR_ALLOW, 968 XS_CTL_IGNORE_NOT_READY); 969 if (error) 970 return (error); 971 } else { 972 return (EBUSY); 973 } 974 } 975 /* FALLTHROUGH */ 976 case ODIOCEJECT: 977 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 978 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 979 980 case DIOCGCACHE: 981 return (sd_getcache(sd, (int *) addr)); 982 983 case DIOCSCACHE: 984 if ((flag & FWRITE) == 0) 985 return (EBADF); 986 return (sd_setcache(sd, *(int *) addr)); 987 988 case DIOCCACHESYNC: 989 /* 990 * XXX Do we really need to care about having a writable 991 * file descriptor here? 992 */ 993 if ((flag & FWRITE) == 0) 994 return (EBADF); 995 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 996 error = sd_flush(sd, 0); 997 if (error) { 998 sd->flags &= ~SDF_FLUSHING; 999 return (error); 1000 } 1001 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1002 } 1003 return (0); 1004 1005 default: 1006 error = dk_ioctl(dksc, dev, cmd, addr, flag, l); 1007 if (error == ENOTTY) 1008 error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l); 1009 return (error); 1010 } 1011 1012 #ifdef DIAGNOSTIC 1013 panic("sdioctl: impossible"); 1014 #endif 1015 } 1016 1017 static void 1018 sd_label(device_t self, struct disklabel *lp) 1019 { 1020 struct sd_softc *sd = device_private(self); 1021 1022 strncpy(lp->d_typename, sd->name, 16); 1023 lp->d_rpm = sd->params.rot_rate; 1024 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) 1025 lp->d_flags |= D_REMOVABLE; 1026 } 1027 1028 static bool 1029 sd_shutdown(device_t self, int how) 1030 { 1031 struct sd_softc *sd = device_private(self); 1032 struct dk_softc *dksc = &sd->sc_dksc; 1033 1034 /* 1035 * If the disk cache needs to be flushed, and the disk supports 1036 * it, flush it. We're cold at this point, so we poll for 1037 * completion. 1038 */ 1039 if ((sd->flags & SDF_DIRTY) != 0) { 1040 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1041 aprint_error_dev(dksc->sc_dev, 1042 "cache synchronization failed\n"); 1043 sd->flags &= ~SDF_FLUSHING; 1044 } else 1045 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1046 } 1047 return true; 1048 } 1049 1050 static bool 1051 sd_suspend(device_t dv, const pmf_qual_t *qual) 1052 { 1053 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1054 } 1055 1056 /* 1057 * Check Errors 1058 */ 1059 static int 1060 sd_interpret_sense(struct scsipi_xfer *xs) 1061 { 1062 struct scsipi_periph *periph = xs->xs_periph; 1063 struct scsipi_channel *chan = periph->periph_channel; 1064 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1065 struct sd_softc *sd = device_private(periph->periph_dev); 1066 struct dk_softc *dksc = &sd->sc_dksc; 1067 int error, retval = EJUSTRETURN; 1068 1069 /* 1070 * If the periph is already recovering, just do the normal 1071 * error processing. 1072 */ 1073 if (periph->periph_flags & PERIPH_RECOVERING) 1074 return (retval); 1075 1076 /* 1077 * Ignore errors from accessing illegal fields (e.g. trying to 1078 * lock the door of a digicam, which doesn't have a door that 1079 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1080 */ 1081 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1082 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1083 sense->asc == 0x24 && 1084 sense->ascq == 0x00) { /* Illegal field in CDB */ 1085 if (!(xs->xs_control & XS_CTL_SILENT)) { 1086 scsipi_printaddr(periph); 1087 printf("no door lock\n"); 1088 } 1089 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1090 return (retval); 1091 } 1092 1093 /* 1094 * If it isn't a extended or extended/deferred error, let 1095 * the generic code handle it. 1096 */ 1097 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1098 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1099 return (retval); 1100 1101 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1102 sense->asc == 0x4) { 1103 if (sense->ascq == 0x01) { 1104 /* 1105 * Unit In The Process Of Becoming Ready. 1106 */ 1107 printf("%s: waiting for pack to spin up...\n", 1108 dksc->sc_xname); 1109 if (!callout_pending(&periph->periph_callout)) 1110 scsipi_periph_freeze(periph, 1); 1111 callout_reset(&periph->periph_callout, 1112 5 * hz, scsipi_periph_timed_thaw, periph); 1113 retval = ERESTART; 1114 } else if (sense->ascq == 0x02) { 1115 printf("%s: pack is stopped, restarting...\n", 1116 dksc->sc_xname); 1117 mutex_enter(chan_mtx(chan)); 1118 periph->periph_flags |= PERIPH_RECOVERING; 1119 mutex_exit(chan_mtx(chan)); 1120 error = scsipi_start(periph, SSS_START, 1121 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1122 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1123 if (error) { 1124 aprint_error_dev(dksc->sc_dev, 1125 "unable to restart pack\n"); 1126 retval = error; 1127 } else 1128 retval = ERESTART; 1129 mutex_enter(chan_mtx(chan)); 1130 periph->periph_flags &= ~PERIPH_RECOVERING; 1131 mutex_exit(chan_mtx(chan)); 1132 } 1133 } 1134 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1135 sense->asc == 0x31 && 1136 sense->ascq == 0x00) { /* maybe for any asq ? */ 1137 /* Medium Format Corrupted */ 1138 retval = EFTYPE; 1139 } 1140 return (retval); 1141 } 1142 1143 1144 static int 1145 sdsize(dev_t dev) 1146 { 1147 struct sd_softc *sd; 1148 struct dk_softc *dksc; 1149 int unit; 1150 1151 unit = SDUNIT(dev); 1152 sd = device_lookup_private(&sd_cd, unit); 1153 if (sd == NULL) 1154 return (-1); 1155 dksc = &sd->sc_dksc; 1156 1157 if (!device_is_active(dksc->sc_dev)) 1158 return (-1); 1159 1160 return dk_size(dksc, dev); 1161 } 1162 1163 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1164 static struct scsipi_xfer sx; 1165 1166 /* 1167 * dump all of physical memory into the partition specified, starting 1168 * at offset 'dumplo' into the partition. 1169 */ 1170 static int 1171 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1172 { 1173 struct sd_softc *sd; 1174 struct dk_softc *dksc; 1175 struct scsipi_periph *periph; 1176 int unit; 1177 1178 unit = SDUNIT(dev); 1179 if ((sd = device_lookup_private(&sd_cd, unit)) == NULL) 1180 return (ENXIO); 1181 dksc = &sd->sc_dksc; 1182 1183 if (!device_is_active(dksc->sc_dev)) 1184 return (ENODEV); 1185 1186 periph = sd->sc_periph; 1187 1188 /* Make sure it was initialized. */ 1189 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1190 return (ENXIO); 1191 1192 return dk_dump(dksc, dev, blkno, va, size, 0); 1193 } 1194 1195 static int 1196 sd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1197 { 1198 struct sd_softc *sd = device_private(dev); 1199 struct dk_softc *dksc = &sd->sc_dksc; 1200 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1201 struct scsipi_rw_10 cmd; /* write command */ 1202 struct scsipi_xfer *xs; /* ... convenience */ 1203 struct scsipi_periph *periph; 1204 struct scsipi_channel *chan; 1205 size_t sectorsize; 1206 1207 periph = sd->sc_periph; 1208 chan = periph->periph_channel; 1209 1210 sectorsize = dg->dg_secsize; 1211 1212 xs = &sx; 1213 1214 #ifndef SD_DUMP_NOT_TRUSTED 1215 /* 1216 * Fill out the scsi command 1217 */ 1218 memset(&cmd, 0, sizeof(cmd)); 1219 cmd.opcode = WRITE_10; 1220 _lto4b(blkno, cmd.addr); 1221 _lto2b(nblk, cmd.length); 1222 /* 1223 * Fill out the scsipi_xfer structure 1224 * Note: we cannot sleep as we may be an interrupt 1225 * don't use scsipi_command() as it may want to wait 1226 * for an xs. 1227 */ 1228 memset(xs, 0, sizeof(sx)); 1229 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1230 XS_CTL_DATA_OUT; 1231 xs->xs_status = 0; 1232 xs->xs_periph = periph; 1233 xs->xs_retries = SDRETRIES; 1234 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1235 xs->cmd = (struct scsipi_generic *)&cmd; 1236 xs->cmdlen = sizeof(cmd); 1237 xs->resid = nblk * sectorsize; 1238 xs->error = XS_NOERROR; 1239 xs->bp = 0; 1240 xs->data = va; 1241 xs->datalen = nblk * sectorsize; 1242 callout_init(&xs->xs_callout, 0); 1243 1244 /* 1245 * Pass all this info to the scsi driver. 1246 */ 1247 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1248 if ((xs->xs_status & XS_STS_DONE) == 0 || 1249 xs->error != XS_NOERROR) 1250 return (EIO); 1251 #else /* SD_DUMP_NOT_TRUSTED */ 1252 /* Let's just talk about this first... */ 1253 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1254 delay(500 * 1000); /* half a second */ 1255 #endif /* SD_DUMP_NOT_TRUSTED */ 1256 1257 return (0); 1258 } 1259 1260 static int 1261 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1262 int page, int flags, int *big) 1263 { 1264 1265 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1266 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1267 *big = 1; 1268 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1269 size + sizeof(struct scsi_mode_parameter_header_10), 1270 flags, SDRETRIES, 6000); 1271 } else { 1272 *big = 0; 1273 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1274 size + sizeof(struct scsi_mode_parameter_header_6), 1275 flags, SDRETRIES, 6000); 1276 } 1277 } 1278 1279 static int 1280 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1281 int flags, int big) 1282 { 1283 1284 if (big) { 1285 struct scsi_mode_parameter_header_10 *header = sense; 1286 1287 _lto2b(0, header->data_length); 1288 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1289 size + sizeof(struct scsi_mode_parameter_header_10), 1290 flags, SDRETRIES, 6000); 1291 } else { 1292 struct scsi_mode_parameter_header_6 *header = sense; 1293 1294 header->data_length = 0; 1295 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1296 size + sizeof(struct scsi_mode_parameter_header_6), 1297 flags, SDRETRIES, 6000); 1298 } 1299 } 1300 1301 /* 1302 * sd_validate_blksize: 1303 * 1304 * Validate the block size. Print error if periph is specified, 1305 */ 1306 static int 1307 sd_validate_blksize(struct scsipi_periph *periph, int len) 1308 { 1309 1310 if (len >= 256 && powerof2(len) && len <= MAXPHYS) { 1311 return 1; 1312 } 1313 1314 if (periph) { 1315 scsipi_printaddr(periph); 1316 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1317 !powerof2(len) ? 1318 "preposterous" : "unsupported", 1319 len, SD_DEFAULT_BLKSIZE); 1320 } 1321 1322 return 0; 1323 } 1324 1325 /* 1326 * sd_read_capacity: 1327 * 1328 * Find out from the device what its capacity is. 1329 */ 1330 static u_int64_t 1331 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1332 { 1333 union { 1334 struct scsipi_read_capacity_10 cmd; 1335 struct scsipi_read_capacity_16 cmd16; 1336 } cmd; 1337 union { 1338 struct scsipi_read_capacity_10_data data; 1339 struct scsipi_read_capacity_16_data data16; 1340 } *datap; 1341 uint64_t rv; 1342 1343 memset(&cmd, 0, sizeof(cmd)); 1344 cmd.cmd.opcode = READ_CAPACITY_10; 1345 1346 /* 1347 * Don't allocate data buffer on stack; 1348 * The lower driver layer might use the same stack and 1349 * if it uses region which is in the same cacheline, 1350 * cache flush ops against the data buffer won't work properly. 1351 */ 1352 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1353 if (datap == NULL) 1354 return 0; 1355 1356 /* 1357 * If the command works, interpret the result as a 4 byte 1358 * number of blocks 1359 */ 1360 rv = 0; 1361 memset(datap, 0, sizeof(datap->data)); 1362 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1363 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1364 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1365 goto out; 1366 1367 if (_4btol(datap->data.addr) != 0xffffffff) { 1368 *blksize = _4btol(datap->data.length); 1369 rv = _4btol(datap->data.addr) + 1; 1370 goto out; 1371 } 1372 1373 /* 1374 * Device is larger than can be reflected by READ CAPACITY (10). 1375 * Try READ CAPACITY (16). 1376 */ 1377 1378 memset(&cmd, 0, sizeof(cmd)); 1379 cmd.cmd16.opcode = READ_CAPACITY_16; 1380 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1381 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1382 1383 memset(datap, 0, sizeof(datap->data16)); 1384 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1385 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1386 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1387 goto out; 1388 1389 *blksize = _4btol(datap->data16.length); 1390 rv = _8btol(datap->data16.addr) + 1; 1391 1392 out: 1393 free(datap, M_TEMP); 1394 return rv; 1395 } 1396 1397 static int 1398 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1399 { 1400 struct { 1401 struct scsi_mode_parameter_header_6 header; 1402 /* no block descriptor */ 1403 u_int8_t pg_code; /* page code (should be 6) */ 1404 u_int8_t pg_length; /* page length (should be 11) */ 1405 u_int8_t wcd; /* bit0: cache disable */ 1406 u_int8_t lbs[2]; /* logical block size */ 1407 u_int8_t size[5]; /* number of log. blocks */ 1408 u_int8_t pp; /* power/performance */ 1409 u_int8_t flags; 1410 u_int8_t resvd; 1411 } scsipi_sense; 1412 u_int64_t blocks; 1413 int error, blksize; 1414 1415 /* 1416 * sd_read_capacity (ie "read capacity") and mode sense page 6 1417 * give the same information. Do both for now, and check 1418 * for consistency. 1419 * XXX probably differs for removable media 1420 */ 1421 dp->blksize = SD_DEFAULT_BLKSIZE; 1422 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1423 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1424 1425 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1426 &scsipi_sense.header, sizeof(scsipi_sense), 1427 flags, SDRETRIES, 6000); 1428 1429 if (error != 0) 1430 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1431 1432 dp->blksize = blksize; 1433 if (!sd_validate_blksize(NULL, dp->blksize)) 1434 dp->blksize = _2btol(scsipi_sense.lbs); 1435 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1436 dp->blksize = SD_DEFAULT_BLKSIZE; 1437 1438 /* 1439 * Create a pseudo-geometry. 1440 */ 1441 dp->heads = 64; 1442 dp->sectors = 32; 1443 dp->cyls = blocks / (dp->heads * dp->sectors); 1444 dp->disksize = _5btol(scsipi_sense.size); 1445 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1446 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1447 (unsigned long long)dp->disksize, 1448 (unsigned long long)blocks); 1449 dp->disksize = blocks; 1450 } 1451 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1452 1453 return (SDGP_RESULT_OK); 1454 } 1455 1456 /* 1457 * Get the scsi driver to send a full inquiry to the * device and use the 1458 * results to fill out the disk parameter structure. 1459 */ 1460 static int 1461 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1462 { 1463 u_int64_t blocks; 1464 int error, blksize; 1465 #if 0 1466 int i; 1467 u_int8_t *p; 1468 #endif 1469 1470 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1471 flags); 1472 if (blocks == 0) { 1473 struct scsipi_read_format_capacities cmd; 1474 struct { 1475 struct scsipi_capacity_list_header header; 1476 struct scsipi_capacity_descriptor desc; 1477 } __packed data; 1478 1479 memset(&cmd, 0, sizeof(cmd)); 1480 memset(&data, 0, sizeof(data)); 1481 cmd.opcode = READ_FORMAT_CAPACITIES; 1482 _lto2b(sizeof(data), cmd.length); 1483 1484 error = scsipi_command(sd->sc_periph, 1485 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1486 SDRETRIES, 20000, NULL, 1487 flags | XS_CTL_DATA_IN); 1488 if (error == EFTYPE) { 1489 /* Medium Format Corrupted, handle as not formatted */ 1490 return (SDGP_RESULT_UNFORMATTED); 1491 } 1492 if (error || data.header.length == 0) 1493 return (SDGP_RESULT_OFFLINE); 1494 1495 #if 0 1496 printf("rfc: length=%d\n", data.header.length); 1497 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"); 1498 #endif 1499 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1500 case SCSIPI_CAP_DESC_CODE_RESERVED: 1501 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1502 break; 1503 1504 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1505 return (SDGP_RESULT_UNFORMATTED); 1506 1507 case SCSIPI_CAP_DESC_CODE_NONE: 1508 return (SDGP_RESULT_OFFLINE); 1509 } 1510 1511 dp->disksize = blocks = _4btol(data.desc.nblks); 1512 if (blocks == 0) 1513 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1514 1515 blksize = _3btol(data.desc.blklen); 1516 1517 } else if (!sd_validate_blksize(NULL, blksize)) { 1518 struct sd_mode_sense_data scsipi_sense; 1519 int big, bsize; 1520 struct scsi_general_block_descriptor *bdesc; 1521 1522 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1523 error = sd_mode_sense(sd, 0, &scsipi_sense, 1524 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1525 if (!error) { 1526 if (big) { 1527 bdesc = (void *)(&scsipi_sense.header.big + 1); 1528 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1529 } else { 1530 bdesc = (void *)(&scsipi_sense.header.small + 1); 1531 bsize = scsipi_sense.header.small.blk_desc_len; 1532 } 1533 1534 #if 0 1535 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1536 printf("page 0 bsize=%d\n", bsize); 1537 printf("page 0 ok\n"); 1538 #endif 1539 1540 if (bsize >= 8) { 1541 blksize = _3btol(bdesc->blklen); 1542 } 1543 } 1544 } 1545 1546 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1547 blksize = SD_DEFAULT_BLKSIZE; 1548 1549 dp->blksize = blksize; 1550 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1551 return (0); 1552 } 1553 1554 static int 1555 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1556 { 1557 struct sd_mode_sense_data scsipi_sense; 1558 int error; 1559 int big, byte2; 1560 size_t poffset; 1561 union scsi_disk_pages *pages; 1562 1563 byte2 = SMS_DBD; 1564 again: 1565 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1566 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1567 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1568 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1569 flags | XS_CTL_SILENT, &big); 1570 if (error) { 1571 if (byte2 == SMS_DBD) { 1572 /* No result; try once more with DBD off */ 1573 byte2 = 0; 1574 goto again; 1575 } 1576 return (error); 1577 } 1578 1579 if (big) { 1580 poffset = sizeof scsipi_sense.header.big; 1581 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1582 } else { 1583 poffset = sizeof scsipi_sense.header.small; 1584 poffset += scsipi_sense.header.small.blk_desc_len; 1585 } 1586 1587 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1588 return ERESTART; 1589 1590 pages = (void *)((u_long)&scsipi_sense + poffset); 1591 #if 0 1592 { 1593 size_t i; 1594 u_int8_t *p; 1595 1596 printf("page 4 sense:"); 1597 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1598 i--, p++) 1599 printf(" %02x", *p); 1600 printf("\n"); 1601 printf("page 4 pg_code=%d sense=%p/%p\n", 1602 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1603 } 1604 #endif 1605 1606 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1607 return (ERESTART); 1608 1609 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1610 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1611 _3btol(pages->rigid_geometry.ncyl), 1612 pages->rigid_geometry.nheads, 1613 _2btol(pages->rigid_geometry.st_cyl_wp), 1614 _2btol(pages->rigid_geometry.st_cyl_rwc), 1615 _2btol(pages->rigid_geometry.land_zone))); 1616 1617 /* 1618 * KLUDGE!! (for zone recorded disks) 1619 * give a number of sectors so that sec * trks * cyls 1620 * is <= disk_size 1621 * can lead to wasted space! THINK ABOUT THIS ! 1622 */ 1623 dp->heads = pages->rigid_geometry.nheads; 1624 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1625 if (dp->heads == 0 || dp->cyls == 0) 1626 return (ERESTART); 1627 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1628 1629 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1630 if (dp->rot_rate == 0) 1631 dp->rot_rate = 3600; 1632 1633 #if 0 1634 printf("page 4 ok\n"); 1635 #endif 1636 return (0); 1637 } 1638 1639 static int 1640 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1641 { 1642 struct sd_mode_sense_data scsipi_sense; 1643 int error; 1644 int big, byte2; 1645 size_t poffset; 1646 union scsi_disk_pages *pages; 1647 1648 byte2 = SMS_DBD; 1649 again: 1650 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1651 error = sd_mode_sense(sd, 0, &scsipi_sense, 1652 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1653 sizeof(scsipi_sense.pages.flex_geometry), 5, 1654 flags | XS_CTL_SILENT, &big); 1655 if (error) { 1656 if (byte2 == SMS_DBD) { 1657 /* No result; try once more with DBD off */ 1658 byte2 = 0; 1659 goto again; 1660 } 1661 return (error); 1662 } 1663 1664 if (big) { 1665 poffset = sizeof scsipi_sense.header.big; 1666 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1667 } else { 1668 poffset = sizeof scsipi_sense.header.small; 1669 poffset += scsipi_sense.header.small.blk_desc_len; 1670 } 1671 1672 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 1673 return ERESTART; 1674 1675 pages = (void *)((u_long)&scsipi_sense + poffset); 1676 #if 0 1677 { 1678 size_t i; 1679 u_int8_t *p; 1680 1681 printf("page 5 sense:"); 1682 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1683 i--, p++) 1684 printf(" %02x", *p); 1685 printf("\n"); 1686 printf("page 5 pg_code=%d sense=%p/%p\n", 1687 pages->flex_geometry.pg_code, &scsipi_sense, pages); 1688 } 1689 #endif 1690 1691 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1692 return (ERESTART); 1693 1694 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1695 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1696 _3btol(pages->flex_geometry.ncyl), 1697 pages->flex_geometry.nheads, 1698 pages->flex_geometry.ph_sec_tr, 1699 _2btol(pages->flex_geometry.bytes_s))); 1700 1701 dp->heads = pages->flex_geometry.nheads; 1702 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1703 dp->sectors = pages->flex_geometry.ph_sec_tr; 1704 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1705 return (ERESTART); 1706 1707 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1708 if (dp->rot_rate == 0) 1709 dp->rot_rate = 3600; 1710 1711 #if 0 1712 printf("page 5 ok\n"); 1713 #endif 1714 return (0); 1715 } 1716 1717 static int 1718 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1719 { 1720 struct dk_softc *dksc = &sd->sc_dksc; 1721 int error; 1722 1723 /* 1724 * If offline, the SDEV_MEDIA_LOADED flag will be 1725 * cleared by the caller if necessary. 1726 */ 1727 if (sd->type == T_SIMPLE_DIRECT) { 1728 error = sd_get_simplifiedparms(sd, dp, flags); 1729 if (!error) 1730 goto setprops; 1731 return (error); 1732 } 1733 1734 error = sd_get_capacity(sd, dp, flags); 1735 if (error) 1736 return (error); 1737 1738 if (sd->type == T_OPTICAL) 1739 goto page0; 1740 1741 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1742 if (!sd_get_parms_page5(sd, dp, flags) || 1743 !sd_get_parms_page4(sd, dp, flags)) 1744 goto setprops; 1745 } else { 1746 if (!sd_get_parms_page4(sd, dp, flags) || 1747 !sd_get_parms_page5(sd, dp, flags)) 1748 goto setprops; 1749 } 1750 1751 page0: 1752 printf("%s: fabricating a geometry\n", dksc->sc_xname); 1753 /* Try calling driver's method for figuring out geometry. */ 1754 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1755 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1756 (sd->sc_periph, dp, dp->disksize)) { 1757 /* 1758 * Use adaptec standard fictitious geometry 1759 * this depends on which controller (e.g. 1542C is 1760 * different. but we have to put SOMETHING here..) 1761 */ 1762 dp->heads = 64; 1763 dp->sectors = 32; 1764 dp->cyls = dp->disksize / (64 * 32); 1765 } 1766 dp->rot_rate = 3600; 1767 1768 setprops: 1769 sd_set_geometry(sd); 1770 1771 return (SDGP_RESULT_OK); 1772 } 1773 1774 static int 1775 sd_flush(struct sd_softc *sd, int flags) 1776 { 1777 struct scsipi_periph *periph = sd->sc_periph; 1778 struct scsi_synchronize_cache_10 cmd; 1779 1780 /* 1781 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1782 * We issue with address 0 length 0, which should be 1783 * interpreted by the device as "all remaining blocks 1784 * starting at address 0". We ignore ILLEGAL REQUEST 1785 * in the event that the command is not supported by 1786 * the device, and poll for completion so that we know 1787 * that the cache has actually been flushed. 1788 * 1789 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1790 * command, as indicated by our quirks flags. 1791 * 1792 * XXX What about older devices? 1793 */ 1794 if (periph->periph_version < 2 || 1795 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1796 return (0); 1797 1798 sd->flags |= SDF_FLUSHING; 1799 memset(&cmd, 0, sizeof(cmd)); 1800 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1801 1802 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1803 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1804 } 1805 1806 static int 1807 sd_getcache(struct sd_softc *sd, int *bitsp) 1808 { 1809 struct scsipi_periph *periph = sd->sc_periph; 1810 struct sd_mode_sense_data scsipi_sense; 1811 int error, bits = 0; 1812 int big; 1813 union scsi_disk_pages *pages; 1814 uint8_t dev_spec; 1815 1816 /* only SCSI-2 and later supported */ 1817 if (periph->periph_version < 2) 1818 return (EOPNOTSUPP); 1819 1820 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1821 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1822 sizeof(scsipi_sense.pages.caching_params), 8, XS_CTL_SILENT, &big); 1823 if (error) 1824 return (error); 1825 1826 if (big) { 1827 pages = (void *)(&scsipi_sense.header.big + 1); 1828 dev_spec = scsipi_sense.header.big.dev_spec; 1829 } else { 1830 pages = (void *)(&scsipi_sense.header.small + 1); 1831 dev_spec = scsipi_sense.header.small.dev_spec; 1832 } 1833 1834 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1835 bits |= DKCACHE_READ; 1836 if (pages->caching_params.flags & CACHING_WCE) 1837 bits |= DKCACHE_WRITE; 1838 if (pages->caching_params.pg_code & PGCODE_PS) 1839 bits |= DKCACHE_SAVE; 1840 1841 /* 1842 * Support for FUA/DPO, defined starting with SCSI-2. Use only 1843 * if device claims to support it, according to the MODE SENSE. 1844 */ 1845 if (!(periph->periph_quirks & PQUIRK_NOFUA) && 1846 ISSET(dev_spec, SMH_DSP_DPOFUA)) 1847 bits |= DKCACHE_FUA | DKCACHE_DPO; 1848 1849 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1850 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1851 sizeof(scsipi_sense.pages.caching_params), 1852 SMS_PCTRL_CHANGEABLE|8, XS_CTL_SILENT, &big); 1853 if (error == 0) { 1854 if (big) 1855 pages = (void *)(&scsipi_sense.header.big + 1); 1856 else 1857 pages = (void *)(&scsipi_sense.header.small + 1); 1858 1859 if (pages->caching_params.flags & CACHING_RCD) 1860 bits |= DKCACHE_RCHANGE; 1861 if (pages->caching_params.flags & CACHING_WCE) 1862 bits |= DKCACHE_WCHANGE; 1863 } 1864 1865 *bitsp = bits; 1866 1867 return (0); 1868 } 1869 1870 static int 1871 sd_setcache(struct sd_softc *sd, int bits) 1872 { 1873 struct scsipi_periph *periph = sd->sc_periph; 1874 struct sd_mode_sense_data scsipi_sense; 1875 int error; 1876 uint8_t oflags, byte2 = 0; 1877 int big; 1878 union scsi_disk_pages *pages; 1879 1880 if (periph->periph_version < 2) 1881 return (EOPNOTSUPP); 1882 1883 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1884 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1885 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1886 if (error) 1887 return (error); 1888 1889 if (big) 1890 pages = (void *)(&scsipi_sense.header.big + 1); 1891 else 1892 pages = (void *)(&scsipi_sense.header.small + 1); 1893 1894 oflags = pages->caching_params.flags; 1895 1896 if (bits & DKCACHE_READ) 1897 pages->caching_params.flags &= ~CACHING_RCD; 1898 else 1899 pages->caching_params.flags |= CACHING_RCD; 1900 1901 if (bits & DKCACHE_WRITE) 1902 pages->caching_params.flags |= CACHING_WCE; 1903 else 1904 pages->caching_params.flags &= ~CACHING_WCE; 1905 1906 if (oflags == pages->caching_params.flags) 1907 return (0); 1908 1909 pages->caching_params.pg_code &= PGCODE_MASK; 1910 1911 if (bits & DKCACHE_SAVE) 1912 byte2 |= SMS_SP; 1913 1914 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 1915 sizeof(struct scsi_mode_page_header) + 1916 pages->caching_params.pg_length, 0, big)); 1917 } 1918 1919 static void 1920 sd_set_geometry(struct sd_softc *sd) 1921 { 1922 struct dk_softc *dksc = &sd->sc_dksc; 1923 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1924 1925 memset(dg, 0, sizeof(*dg)); 1926 1927 dg->dg_secperunit = sd->params.disksize; 1928 dg->dg_secsize = sd->params.blksize; 1929 dg->dg_nsectors = sd->params.sectors; 1930 dg->dg_ntracks = sd->params.heads; 1931 dg->dg_ncylinders = sd->params.cyls; 1932 1933 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, sd->typename); 1934 } 1935
Indexes created Tue Sep 23 14:10:03 GMT 2025