sd.c revision 1.333
1 /* $NetBSD: sd.c,v 1.333 2022/01/27 18:44:49 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 1.333 2022/01/27 18:44:49 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_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 const 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 partition 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 occurrence 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 implicitly 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 setting 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 int pmask = __BIT(part); 958 /* 959 * Don't force eject: check that we are the only 960 * partition open. If so, unlock it. 961 */ 962 if (DK_BUSY(dksc, pmask) == 0) { 963 error = scsipi_prevent(periph, SPAMR_ALLOW, 964 XS_CTL_IGNORE_NOT_READY); 965 if (error) 966 return (error); 967 } else { 968 return (EBUSY); 969 } 970 } 971 /* FALLTHROUGH */ 972 case ODIOCEJECT: 973 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 974 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 975 976 case DIOCGCACHE: 977 return (sd_getcache(sd, (int *) addr)); 978 979 case DIOCSCACHE: 980 if ((flag & FWRITE) == 0) 981 return (EBADF); 982 return (sd_setcache(sd, *(int *) addr)); 983 984 case DIOCCACHESYNC: 985 /* 986 * XXX Do we really need to care about having a writable 987 * file descriptor here? 988 */ 989 if ((flag & FWRITE) == 0) 990 return (EBADF); 991 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 992 error = sd_flush(sd, 0); 993 if (error) { 994 sd->flags &= ~SDF_FLUSHING; 995 return (error); 996 } 997 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 998 } 999 return (0); 1000 1001 default: 1002 error = dk_ioctl(dksc, dev, cmd, addr, flag, l); 1003 if (error == ENOTTY) 1004 error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l); 1005 return (error); 1006 } 1007 1008 #ifdef DIAGNOSTIC 1009 panic("sdioctl: impossible"); 1010 #endif 1011 } 1012 1013 static void 1014 sd_label(device_t self, struct disklabel *lp) 1015 { 1016 struct sd_softc *sd = device_private(self); 1017 1018 strncpy(lp->d_typename, sd->name, 16); 1019 lp->d_rpm = sd->params.rot_rate; 1020 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) 1021 lp->d_flags |= D_REMOVABLE; 1022 } 1023 1024 static bool 1025 sd_shutdown(device_t self, int how) 1026 { 1027 struct sd_softc *sd = device_private(self); 1028 struct dk_softc *dksc = &sd->sc_dksc; 1029 1030 /* 1031 * If the disk cache needs to be flushed, and the disk supports 1032 * it, flush it. We're cold at this point, so we poll for 1033 * completion. 1034 */ 1035 if ((sd->flags & SDF_DIRTY) != 0) { 1036 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1037 aprint_error_dev(dksc->sc_dev, 1038 "cache synchronization failed\n"); 1039 sd->flags &= ~SDF_FLUSHING; 1040 } else 1041 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1042 } 1043 return true; 1044 } 1045 1046 static bool 1047 sd_suspend(device_t dv, const pmf_qual_t *qual) 1048 { 1049 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1050 } 1051 1052 /* 1053 * Check Errors 1054 */ 1055 static int 1056 sd_interpret_sense(struct scsipi_xfer *xs) 1057 { 1058 struct scsipi_periph *periph = xs->xs_periph; 1059 struct scsipi_channel *chan = periph->periph_channel; 1060 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1061 struct sd_softc *sd = device_private(periph->periph_dev); 1062 struct dk_softc *dksc = &sd->sc_dksc; 1063 int error, retval = EJUSTRETURN; 1064 1065 /* 1066 * If the periph is already recovering, just do the normal 1067 * error processing. 1068 */ 1069 if (periph->periph_flags & PERIPH_RECOVERING) 1070 return (retval); 1071 1072 /* 1073 * Ignore errors from accessing illegal fields (e.g. trying to 1074 * lock the door of a digicam, which doesn't have a door that 1075 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1076 */ 1077 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1078 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1079 sense->asc == 0x24 && 1080 sense->ascq == 0x00) { /* Illegal field in CDB */ 1081 if (!(xs->xs_control & XS_CTL_SILENT)) { 1082 scsipi_printaddr(periph); 1083 printf("no door lock\n"); 1084 } 1085 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1086 return (retval); 1087 } 1088 1089 1090 1091 /* 1092 * If the device is not open yet, let the generic code handle it. 1093 */ 1094 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1095 return (retval); 1096 1097 /* 1098 * If it isn't a extended or extended/deferred error, let 1099 * the generic code handle it. 1100 */ 1101 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1102 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1103 return (retval); 1104 1105 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1106 sense->asc == 0x4) { 1107 if (sense->ascq == 0x01) { 1108 /* 1109 * Unit In The Process Of Becoming Ready. 1110 */ 1111 printf("%s: waiting for pack to spin up...\n", 1112 dksc->sc_xname); 1113 if (!callout_pending(&periph->periph_callout)) 1114 scsipi_periph_freeze(periph, 1); 1115 callout_reset(&periph->periph_callout, 1116 5 * hz, scsipi_periph_timed_thaw, periph); 1117 retval = ERESTART; 1118 } else if (sense->ascq == 0x02) { 1119 printf("%s: pack is stopped, restarting...\n", 1120 dksc->sc_xname); 1121 mutex_enter(chan_mtx(chan)); 1122 periph->periph_flags |= PERIPH_RECOVERING; 1123 mutex_exit(chan_mtx(chan)); 1124 error = scsipi_start(periph, SSS_START, 1125 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1126 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1127 if (error) { 1128 aprint_error_dev(dksc->sc_dev, 1129 "unable to restart pack\n"); 1130 retval = error; 1131 } else 1132 retval = ERESTART; 1133 mutex_enter(chan_mtx(chan)); 1134 periph->periph_flags &= ~PERIPH_RECOVERING; 1135 mutex_exit(chan_mtx(chan)); 1136 } 1137 } 1138 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1139 sense->asc == 0x31 && 1140 sense->ascq == 0x00) { /* maybe for any asq ? */ 1141 /* Medium Format Corrupted */ 1142 retval = EFTYPE; 1143 } 1144 return (retval); 1145 } 1146 1147 1148 static int 1149 sdsize(dev_t dev) 1150 { 1151 struct sd_softc *sd; 1152 struct dk_softc *dksc; 1153 int unit; 1154 1155 unit = SDUNIT(dev); 1156 sd = device_lookup_private(&sd_cd, unit); 1157 if (sd == NULL) 1158 return (-1); 1159 dksc = &sd->sc_dksc; 1160 1161 if (!device_is_active(dksc->sc_dev)) 1162 return (-1); 1163 1164 return dk_size(dksc, dev); 1165 } 1166 1167 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1168 static struct scsipi_xfer sx; 1169 1170 /* 1171 * dump all of physical memory into the partition specified, starting 1172 * at offset 'dumplo' into the partition. 1173 */ 1174 static int 1175 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1176 { 1177 struct sd_softc *sd; 1178 struct dk_softc *dksc; 1179 struct scsipi_periph *periph; 1180 int unit; 1181 1182 unit = SDUNIT(dev); 1183 if ((sd = device_lookup_private(&sd_cd, unit)) == NULL) 1184 return (ENXIO); 1185 dksc = &sd->sc_dksc; 1186 1187 if (!device_is_active(dksc->sc_dev)) 1188 return (ENODEV); 1189 1190 periph = sd->sc_periph; 1191 1192 /* Make sure it was initialized. */ 1193 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1194 return (ENXIO); 1195 1196 return dk_dump(dksc, dev, blkno, va, size, 0); 1197 } 1198 1199 static int 1200 sd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1201 { 1202 struct sd_softc *sd = device_private(dev); 1203 struct dk_softc *dksc = &sd->sc_dksc; 1204 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1205 struct scsipi_rw_10 cmd; /* write command */ 1206 struct scsipi_xfer *xs; /* ... convenience */ 1207 struct scsipi_periph *periph; 1208 struct scsipi_channel *chan; 1209 size_t sectorsize; 1210 1211 periph = sd->sc_periph; 1212 chan = periph->periph_channel; 1213 1214 sectorsize = dg->dg_secsize; 1215 1216 xs = &sx; 1217 1218 #ifndef SD_DUMP_NOT_TRUSTED 1219 /* 1220 * Fill out the scsi command 1221 */ 1222 memset(&cmd, 0, sizeof(cmd)); 1223 cmd.opcode = WRITE_10; 1224 _lto4b(blkno, cmd.addr); 1225 _lto2b(nblk, cmd.length); 1226 /* 1227 * Fill out the scsipi_xfer structure 1228 * Note: we cannot sleep as we may be an interrupt 1229 * don't use scsipi_command() as it may want to wait 1230 * for an xs. 1231 */ 1232 memset(xs, 0, sizeof(sx)); 1233 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1234 XS_CTL_DATA_OUT; 1235 xs->xs_status = 0; 1236 xs->xs_periph = periph; 1237 xs->xs_retries = SDRETRIES; 1238 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1239 xs->cmd = (struct scsipi_generic *)&cmd; 1240 xs->cmdlen = sizeof(cmd); 1241 xs->resid = nblk * sectorsize; 1242 xs->error = XS_NOERROR; 1243 xs->bp = 0; 1244 xs->data = va; 1245 xs->datalen = nblk * sectorsize; 1246 callout_init(&xs->xs_callout, 0); 1247 1248 /* 1249 * Pass all this info to the scsi driver. 1250 */ 1251 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1252 if ((xs->xs_status & XS_STS_DONE) == 0 || 1253 xs->error != XS_NOERROR) 1254 return (EIO); 1255 #else /* SD_DUMP_NOT_TRUSTED */ 1256 /* Let's just talk about this first... */ 1257 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1258 delay(500 * 1000); /* half a second */ 1259 #endif /* SD_DUMP_NOT_TRUSTED */ 1260 1261 return (0); 1262 } 1263 1264 static int 1265 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1266 int page, int flags, int *big) 1267 { 1268 1269 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1270 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1271 *big = 1; 1272 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1273 size + sizeof(struct scsi_mode_parameter_header_10), 1274 flags, SDRETRIES, 6000); 1275 } else { 1276 *big = 0; 1277 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1278 size + sizeof(struct scsi_mode_parameter_header_6), 1279 flags, SDRETRIES, 6000); 1280 } 1281 } 1282 1283 static int 1284 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1285 int flags, int big) 1286 { 1287 1288 if (big) { 1289 struct scsi_mode_parameter_header_10 *header = sense; 1290 1291 _lto2b(0, header->data_length); 1292 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1293 size + sizeof(struct scsi_mode_parameter_header_10), 1294 flags, SDRETRIES, 6000); 1295 } else { 1296 struct scsi_mode_parameter_header_6 *header = sense; 1297 1298 header->data_length = 0; 1299 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1300 size + sizeof(struct scsi_mode_parameter_header_6), 1301 flags, SDRETRIES, 6000); 1302 } 1303 } 1304 1305 /* 1306 * sd_validate_blksize: 1307 * 1308 * Validate the block size. Print error if periph is specified, 1309 */ 1310 static int 1311 sd_validate_blksize(struct scsipi_periph *periph, int len) 1312 { 1313 1314 if (len >= 256 && powerof2(len) && len <= 4096) { 1315 return 1; 1316 } 1317 1318 if (periph) { 1319 scsipi_printaddr(periph); 1320 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1321 !powerof2(len) ? 1322 "preposterous" : "unsupported", 1323 len, SD_DEFAULT_BLKSIZE); 1324 } 1325 1326 return 0; 1327 } 1328 1329 /* 1330 * sd_read_capacity: 1331 * 1332 * Find out from the device what its capacity is. 1333 */ 1334 static u_int64_t 1335 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1336 { 1337 union { 1338 struct scsipi_read_capacity_10 cmd; 1339 struct scsipi_read_capacity_16 cmd16; 1340 } cmd; 1341 union { 1342 struct scsipi_read_capacity_10_data data; 1343 struct scsipi_read_capacity_16_data data16; 1344 } *datap; 1345 uint64_t rv; 1346 1347 memset(&cmd, 0, sizeof(cmd)); 1348 cmd.cmd.opcode = READ_CAPACITY_10; 1349 1350 /* 1351 * Don't allocate data buffer on stack; 1352 * The lower driver layer might use the same stack and 1353 * if it uses region which is in the same cacheline, 1354 * cache flush ops against the data buffer won't work properly. 1355 */ 1356 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1357 if (datap == NULL) 1358 return 0; 1359 1360 /* 1361 * If the command works, interpret the result as a 4 byte 1362 * number of blocks 1363 */ 1364 rv = 0; 1365 memset(datap, 0, sizeof(datap->data)); 1366 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1367 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1368 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1369 goto out; 1370 1371 if (_4btol(datap->data.addr) != 0xffffffff) { 1372 *blksize = _4btol(datap->data.length); 1373 rv = _4btol(datap->data.addr) + 1; 1374 goto out; 1375 } 1376 1377 /* 1378 * Device is larger than can be reflected by READ CAPACITY (10). 1379 * Try READ CAPACITY (16). 1380 */ 1381 1382 memset(&cmd, 0, sizeof(cmd)); 1383 cmd.cmd16.opcode = READ_CAPACITY_16; 1384 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1385 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1386 1387 memset(datap, 0, sizeof(datap->data16)); 1388 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1389 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1390 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1391 goto out; 1392 1393 *blksize = _4btol(datap->data16.length); 1394 rv = _8btol(datap->data16.addr) + 1; 1395 1396 out: 1397 free(datap, M_TEMP); 1398 return rv; 1399 } 1400 1401 static int 1402 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1403 { 1404 struct { 1405 struct scsi_mode_parameter_header_6 header; 1406 /* no block descriptor */ 1407 u_int8_t pg_code; /* page code (should be 6) */ 1408 u_int8_t pg_length; /* page length (should be 11) */ 1409 u_int8_t wcd; /* bit0: cache disable */ 1410 u_int8_t lbs[2]; /* logical block size */ 1411 u_int8_t size[5]; /* number of log. blocks */ 1412 u_int8_t pp; /* power/performance */ 1413 u_int8_t flags; 1414 u_int8_t resvd; 1415 } scsipi_sense; 1416 u_int64_t blocks; 1417 int error, blksize; 1418 1419 /* 1420 * sd_read_capacity (ie "read capacity") and mode sense page 6 1421 * give the same information. Do both for now, and check 1422 * for consistency. 1423 * XXX probably differs for removable media 1424 */ 1425 dp->blksize = SD_DEFAULT_BLKSIZE; 1426 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1427 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1428 1429 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1430 &scsipi_sense.header, sizeof(scsipi_sense), 1431 flags, SDRETRIES, 6000); 1432 1433 if (error != 0) 1434 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1435 1436 dp->blksize = blksize; 1437 if (!sd_validate_blksize(NULL, dp->blksize)) 1438 dp->blksize = _2btol(scsipi_sense.lbs); 1439 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1440 dp->blksize = SD_DEFAULT_BLKSIZE; 1441 1442 /* 1443 * Create a pseudo-geometry. 1444 */ 1445 dp->heads = 64; 1446 dp->sectors = 32; 1447 dp->cyls = blocks / (dp->heads * dp->sectors); 1448 dp->disksize = _5btol(scsipi_sense.size); 1449 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1450 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1451 (unsigned long long)dp->disksize, 1452 (unsigned long long)blocks); 1453 dp->disksize = blocks; 1454 } 1455 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1456 1457 return (SDGP_RESULT_OK); 1458 } 1459 1460 /* 1461 * Get the scsi driver to send a full inquiry to the * device and use the 1462 * results to fill out the disk parameter structure. 1463 */ 1464 static int 1465 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1466 { 1467 u_int64_t blocks; 1468 int error, blksize; 1469 #if 0 1470 int i; 1471 u_int8_t *p; 1472 #endif 1473 1474 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1475 flags); 1476 if (blocks == 0) { 1477 struct scsipi_read_format_capacities cmd; 1478 struct { 1479 struct scsipi_capacity_list_header header; 1480 struct scsipi_capacity_descriptor desc; 1481 } __packed data; 1482 1483 memset(&cmd, 0, sizeof(cmd)); 1484 memset(&data, 0, sizeof(data)); 1485 cmd.opcode = READ_FORMAT_CAPACITIES; 1486 _lto2b(sizeof(data), cmd.length); 1487 1488 error = scsipi_command(sd->sc_periph, 1489 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1490 SDRETRIES, 20000, NULL, 1491 flags | XS_CTL_DATA_IN); 1492 if (error == EFTYPE) { 1493 /* Medium Format Corrupted, handle as not formatted */ 1494 return (SDGP_RESULT_UNFORMATTED); 1495 } 1496 if (error || data.header.length == 0) 1497 return (SDGP_RESULT_OFFLINE); 1498 1499 #if 0 1500 printf("rfc: length=%d\n", data.header.length); 1501 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"); 1502 #endif 1503 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1504 case SCSIPI_CAP_DESC_CODE_RESERVED: 1505 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1506 break; 1507 1508 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1509 return (SDGP_RESULT_UNFORMATTED); 1510 1511 case SCSIPI_CAP_DESC_CODE_NONE: 1512 return (SDGP_RESULT_OFFLINE); 1513 } 1514 1515 dp->disksize = blocks = _4btol(data.desc.nblks); 1516 if (blocks == 0) 1517 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1518 1519 blksize = _3btol(data.desc.blklen); 1520 1521 } else if (!sd_validate_blksize(NULL, blksize)) { 1522 struct sd_mode_sense_data scsipi_sense; 1523 int big, bsize; 1524 struct scsi_general_block_descriptor *bdesc; 1525 1526 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1527 error = sd_mode_sense(sd, 0, &scsipi_sense, 1528 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1529 if (!error) { 1530 if (big) { 1531 bdesc = (void *)(&scsipi_sense.header.big + 1); 1532 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1533 } else { 1534 bdesc = (void *)(&scsipi_sense.header.small + 1); 1535 bsize = scsipi_sense.header.small.blk_desc_len; 1536 } 1537 1538 #if 0 1539 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1540 printf("page 0 bsize=%d\n", bsize); 1541 printf("page 0 ok\n"); 1542 #endif 1543 1544 if (bsize >= 8) { 1545 blksize = _3btol(bdesc->blklen); 1546 } 1547 } 1548 } 1549 1550 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1551 blksize = SD_DEFAULT_BLKSIZE; 1552 1553 dp->blksize = blksize; 1554 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1555 return (0); 1556 } 1557 1558 static int 1559 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1560 { 1561 struct sd_mode_sense_data scsipi_sense; 1562 int error; 1563 int big, byte2; 1564 size_t poffset; 1565 union scsi_disk_pages *pages; 1566 1567 byte2 = SMS_DBD; 1568 again: 1569 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1570 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1571 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1572 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1573 flags | XS_CTL_SILENT, &big); 1574 if (error) { 1575 if (byte2 == SMS_DBD) { 1576 /* No result; try once more with DBD off */ 1577 byte2 = 0; 1578 goto again; 1579 } 1580 return (error); 1581 } 1582 1583 if (big) { 1584 poffset = sizeof scsipi_sense.header.big; 1585 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1586 } else { 1587 poffset = sizeof scsipi_sense.header.small; 1588 poffset += scsipi_sense.header.small.blk_desc_len; 1589 } 1590 1591 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1592 return ERESTART; 1593 1594 pages = (void *)((u_long)&scsipi_sense + poffset); 1595 #if 0 1596 { 1597 size_t i; 1598 u_int8_t *p; 1599 1600 printf("page 4 sense:"); 1601 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1602 i--, p++) 1603 printf(" %02x", *p); 1604 printf("\n"); 1605 printf("page 4 pg_code=%d sense=%p/%p\n", 1606 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1607 } 1608 #endif 1609 1610 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1611 return (ERESTART); 1612 1613 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1614 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1615 _3btol(pages->rigid_geometry.ncyl), 1616 pages->rigid_geometry.nheads, 1617 _2btol(pages->rigid_geometry.st_cyl_wp), 1618 _2btol(pages->rigid_geometry.st_cyl_rwc), 1619 _2btol(pages->rigid_geometry.land_zone))); 1620 1621 /* 1622 * KLUDGE!! (for zone recorded disks) 1623 * give a number of sectors so that sec * trks * cyls 1624 * is <= disk_size 1625 * can lead to wasted space! THINK ABOUT THIS ! 1626 */ 1627 dp->heads = pages->rigid_geometry.nheads; 1628 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1629 if (dp->heads == 0 || dp->cyls == 0) 1630 return (ERESTART); 1631 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1632 1633 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1634 if (dp->rot_rate == 0) 1635 dp->rot_rate = 3600; 1636 1637 #if 0 1638 printf("page 4 ok\n"); 1639 #endif 1640 return (0); 1641 } 1642 1643 static int 1644 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1645 { 1646 struct sd_mode_sense_data scsipi_sense; 1647 int error; 1648 int big, byte2; 1649 size_t poffset; 1650 union scsi_disk_pages *pages; 1651 1652 byte2 = SMS_DBD; 1653 again: 1654 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1655 error = sd_mode_sense(sd, 0, &scsipi_sense, 1656 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1657 sizeof(scsipi_sense.pages.flex_geometry), 5, 1658 flags | XS_CTL_SILENT, &big); 1659 if (error) { 1660 if (byte2 == SMS_DBD) { 1661 /* No result; try once more with DBD off */ 1662 byte2 = 0; 1663 goto again; 1664 } 1665 return (error); 1666 } 1667 1668 if (big) { 1669 poffset = sizeof scsipi_sense.header.big; 1670 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1671 } else { 1672 poffset = sizeof scsipi_sense.header.small; 1673 poffset += scsipi_sense.header.small.blk_desc_len; 1674 } 1675 1676 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 1677 return ERESTART; 1678 1679 pages = (void *)((u_long)&scsipi_sense + poffset); 1680 #if 0 1681 { 1682 size_t i; 1683 u_int8_t *p; 1684 1685 printf("page 5 sense:"); 1686 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1687 i--, p++) 1688 printf(" %02x", *p); 1689 printf("\n"); 1690 printf("page 5 pg_code=%d sense=%p/%p\n", 1691 pages->flex_geometry.pg_code, &scsipi_sense, pages); 1692 } 1693 #endif 1694 1695 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1696 return (ERESTART); 1697 1698 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1699 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1700 _3btol(pages->flex_geometry.ncyl), 1701 pages->flex_geometry.nheads, 1702 pages->flex_geometry.ph_sec_tr, 1703 _2btol(pages->flex_geometry.bytes_s))); 1704 1705 dp->heads = pages->flex_geometry.nheads; 1706 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1707 dp->sectors = pages->flex_geometry.ph_sec_tr; 1708 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1709 return (ERESTART); 1710 1711 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1712 if (dp->rot_rate == 0) 1713 dp->rot_rate = 3600; 1714 1715 #if 0 1716 printf("page 5 ok\n"); 1717 #endif 1718 return (0); 1719 } 1720 1721 static int 1722 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1723 { 1724 struct dk_softc *dksc = &sd->sc_dksc; 1725 int error; 1726 1727 /* 1728 * If offline, the SDEV_MEDIA_LOADED flag will be 1729 * cleared by the caller if necessary. 1730 */ 1731 if (sd->type == T_SIMPLE_DIRECT) { 1732 error = sd_get_simplifiedparms(sd, dp, flags); 1733 if (!error) 1734 goto setprops; 1735 return (error); 1736 } 1737 1738 error = sd_get_capacity(sd, dp, flags); 1739 if (error) 1740 return (error); 1741 1742 if (sd->type == T_OPTICAL) 1743 goto page0; 1744 1745 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1746 if (!sd_get_parms_page5(sd, dp, flags) || 1747 !sd_get_parms_page4(sd, dp, flags)) 1748 goto setprops; 1749 } else { 1750 if (!sd_get_parms_page4(sd, dp, flags) || 1751 !sd_get_parms_page5(sd, dp, flags)) 1752 goto setprops; 1753 } 1754 1755 page0: 1756 printf("%s: fabricating a geometry\n", dksc->sc_xname); 1757 /* Try calling driver's method for figuring out geometry. */ 1758 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1759 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1760 (sd->sc_periph, dp, dp->disksize)) { 1761 /* 1762 * Use adaptec standard fictitious geometry 1763 * this depends on which controller (e.g. 1542C is 1764 * different. but we have to put SOMETHING here..) 1765 */ 1766 dp->heads = 64; 1767 dp->sectors = 32; 1768 dp->cyls = dp->disksize / (64 * 32); 1769 } 1770 dp->rot_rate = 3600; 1771 1772 setprops: 1773 sd_set_geometry(sd); 1774 1775 return (SDGP_RESULT_OK); 1776 } 1777 1778 static int 1779 sd_flush(struct sd_softc *sd, int flags) 1780 { 1781 struct scsipi_periph *periph = sd->sc_periph; 1782 struct scsi_synchronize_cache_10 cmd; 1783 1784 /* 1785 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1786 * We issue with address 0 length 0, which should be 1787 * interpreted by the device as "all remaining blocks 1788 * starting at address 0". We ignore ILLEGAL REQUEST 1789 * in the event that the command is not supported by 1790 * the device, and poll for completion so that we know 1791 * that the cache has actually been flushed. 1792 * 1793 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1794 * command, as indicated by our quirks flags. 1795 * 1796 * XXX What about older devices? 1797 */ 1798 if (periph->periph_version < 2 || 1799 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1800 return (0); 1801 1802 sd->flags |= SDF_FLUSHING; 1803 memset(&cmd, 0, sizeof(cmd)); 1804 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1805 1806 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1807 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1808 } 1809 1810 static int 1811 sd_getcache(struct sd_softc *sd, int *bitsp) 1812 { 1813 struct scsipi_periph *periph = sd->sc_periph; 1814 struct sd_mode_sense_data scsipi_sense; 1815 int error, bits = 0; 1816 int big; 1817 union scsi_disk_pages *pages; 1818 uint8_t dev_spec; 1819 1820 /* only SCSI-2 and later supported */ 1821 if (periph->periph_version < 2) 1822 return (EOPNOTSUPP); 1823 1824 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1825 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1826 sizeof(scsipi_sense.pages.caching_params), 8, XS_CTL_SILENT, &big); 1827 if (error) 1828 return (error); 1829 1830 if (big) { 1831 pages = (void *)(&scsipi_sense.header.big + 1); 1832 dev_spec = scsipi_sense.header.big.dev_spec; 1833 } else { 1834 pages = (void *)(&scsipi_sense.header.small + 1); 1835 dev_spec = scsipi_sense.header.small.dev_spec; 1836 } 1837 1838 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1839 bits |= DKCACHE_READ; 1840 if (pages->caching_params.flags & CACHING_WCE) 1841 bits |= DKCACHE_WRITE; 1842 if (pages->caching_params.pg_code & PGCODE_PS) 1843 bits |= DKCACHE_SAVE; 1844 1845 /* 1846 * Support for FUA/DPO, defined starting with SCSI-2. Use only 1847 * if device claims to support it, according to the MODE SENSE. 1848 */ 1849 if (!(periph->periph_quirks & PQUIRK_NOFUA) && 1850 ISSET(dev_spec, SMH_DSP_DPOFUA)) 1851 bits |= DKCACHE_FUA | DKCACHE_DPO; 1852 1853 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1854 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1855 sizeof(scsipi_sense.pages.caching_params), 1856 SMS_PCTRL_CHANGEABLE|8, XS_CTL_SILENT, &big); 1857 if (error == 0) { 1858 if (big) 1859 pages = (void *)(&scsipi_sense.header.big + 1); 1860 else 1861 pages = (void *)(&scsipi_sense.header.small + 1); 1862 1863 if (pages->caching_params.flags & CACHING_RCD) 1864 bits |= DKCACHE_RCHANGE; 1865 if (pages->caching_params.flags & CACHING_WCE) 1866 bits |= DKCACHE_WCHANGE; 1867 } 1868 1869 *bitsp = bits; 1870 1871 return (0); 1872 } 1873 1874 static int 1875 sd_setcache(struct sd_softc *sd, int bits) 1876 { 1877 struct scsipi_periph *periph = sd->sc_periph; 1878 struct sd_mode_sense_data scsipi_sense; 1879 int error; 1880 uint8_t oflags, byte2 = 0; 1881 int big; 1882 union scsi_disk_pages *pages; 1883 1884 if (periph->periph_version < 2) 1885 return (EOPNOTSUPP); 1886 1887 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1888 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1889 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1890 if (error) 1891 return (error); 1892 1893 if (big) 1894 pages = (void *)(&scsipi_sense.header.big + 1); 1895 else 1896 pages = (void *)(&scsipi_sense.header.small + 1); 1897 1898 oflags = pages->caching_params.flags; 1899 1900 if (bits & DKCACHE_READ) 1901 pages->caching_params.flags &= ~CACHING_RCD; 1902 else 1903 pages->caching_params.flags |= CACHING_RCD; 1904 1905 if (bits & DKCACHE_WRITE) 1906 pages->caching_params.flags |= CACHING_WCE; 1907 else 1908 pages->caching_params.flags &= ~CACHING_WCE; 1909 1910 if (oflags == pages->caching_params.flags) 1911 return (0); 1912 1913 pages->caching_params.pg_code &= PGCODE_MASK; 1914 1915 if (bits & DKCACHE_SAVE) 1916 byte2 |= SMS_SP; 1917 1918 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 1919 sizeof(struct scsi_mode_page_header) + 1920 pages->caching_params.pg_length, 0, big)); 1921 } 1922 1923 static void 1924 sd_set_geometry(struct sd_softc *sd) 1925 { 1926 struct dk_softc *dksc = &sd->sc_dksc; 1927 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1928 1929 memset(dg, 0, sizeof(*dg)); 1930 1931 dg->dg_secperunit = sd->params.disksize; 1932 dg->dg_secsize = sd->params.blksize; 1933 dg->dg_nsectors = sd->params.sectors; 1934 dg->dg_ntracks = sd->params.heads; 1935 dg->dg_ncylinders = sd->params.cyls; 1936 1937 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, sd->typename); 1938 } 1939
Indexes created Tue Sep 23 14:10:03 GMT 2025