sd.c revision 1.335
1 /* $NetBSD: sd.c,v 1.335 2022/08/28 10:26:37 mlelstv Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Originally written by Julian Elischer (julian (at) dialix.oz.au) 34 * for TRW Financial Systems for use under the MACH(2.5) operating system. 35 * 36 * TRW Financial Systems, in accordance with their agreement with Carnegie 37 * Mellon University, makes this software available to CMU to distribute 38 * or use in any manner that they see fit as long as this message is kept with 39 * the software. For this reason TFS also grants any other persons or 40 * organisations permission to use or modify this software. 41 * 42 * TFS supplies this software to be publicly redistributed 43 * on the understanding that TFS is not responsible for the correct 44 * functioning of this software in any circumstances. 45 * 46 * Ported to run under 386BSD by Julian Elischer (julian (at) dialix.oz.au) Sept 1992 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.335 2022/08/28 10:26:37 mlelstv Exp $"); 51 52 #ifdef _KERNEL_OPT 53 #include "opt_scsi.h" 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/file.h> 60 #include <sys/stat.h> 61 #include <sys/ioctl.h> 62 #include <sys/scsiio.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/errno.h> 68 #include <sys/device.h> 69 #include <sys/disklabel.h> 70 #include <sys/disk.h> 71 #include <sys/proc.h> 72 #include <sys/conf.h> 73 #include <sys/vnode.h> 74 75 #include <dev/scsipi/scsi_spc.h> 76 #include <dev/scsipi/scsipi_all.h> 77 #include <dev/scsipi/scsi_all.h> 78 #include <dev/scsipi/scsipi_disk.h> 79 #include <dev/scsipi/scsi_disk.h> 80 #include <dev/scsipi/scsiconf.h> 81 #include <dev/scsipi/scsipi_base.h> 82 #include <dev/scsipi/sdvar.h> 83 84 #include <prop/proplib.h> 85 86 #define SDUNIT(dev) DISKUNIT(dev) 87 #define SDPART(dev) DISKPART(dev) 88 #define SDMINOR(unit, part) DISKMINOR(unit, part) 89 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 90 91 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 92 93 #define SD_DEFAULT_BLKSIZE 512 94 95 static void sdminphys(struct buf *); 96 static void sdstart(struct scsipi_periph *); 97 static void sdrestart(void *); 98 static void sddone(struct scsipi_xfer *, int); 99 static bool sd_suspend(device_t, const pmf_qual_t *); 100 static bool sd_shutdown(device_t, int); 101 static int sd_interpret_sense(struct scsipi_xfer *); 102 static int sd_diskstart(device_t, struct buf *); 103 static int sd_dumpblocks(device_t, void *, daddr_t, int); 104 static void sd_iosize(device_t, int *); 105 static int sd_lastclose(device_t); 106 static int sd_firstopen(device_t, dev_t, int, int); 107 static void sd_label(device_t, struct disklabel *); 108 109 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int, int *); 111 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 112 int); 113 static int sd_validate_blksize(struct scsipi_periph *, int); 114 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 115 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 116 int); 117 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 118 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 119 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 120 int); 121 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 122 int); 123 124 static int sd_flush(struct sd_softc *, int); 125 static int sd_getcache(struct sd_softc *, int *); 126 static int sd_setcache(struct sd_softc *, int); 127 128 static int sdmatch(device_t, cfdata_t, void *); 129 static void sdattach(device_t, device_t, void *); 130 static int sddetach(device_t, int); 131 static void sd_set_geometry(struct sd_softc *); 132 133 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 134 NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 135 136 extern struct cfdriver sd_cd; 137 138 static const struct scsipi_inquiry_pattern sd_patterns[] = { 139 {T_DIRECT, T_FIXED, 140 "", "", ""}, 141 {T_DIRECT, T_REMOV, 142 "", "", ""}, 143 {T_OPTICAL, T_FIXED, 144 "", "", ""}, 145 {T_OPTICAL, T_REMOV, 146 "", "", ""}, 147 {T_SIMPLE_DIRECT, T_FIXED, 148 "", "", ""}, 149 {T_SIMPLE_DIRECT, T_REMOV, 150 "", "", ""}, 151 }; 152 153 static dev_type_open(sdopen); 154 static dev_type_close(sdclose); 155 static dev_type_read(sdread); 156 static dev_type_write(sdwrite); 157 static dev_type_ioctl(sdioctl); 158 static dev_type_strategy(sdstrategy); 159 static dev_type_dump(sddump); 160 static dev_type_size(sdsize); 161 162 const struct bdevsw sd_bdevsw = { 163 .d_open = sdopen, 164 .d_close = sdclose, 165 .d_strategy = sdstrategy, 166 .d_ioctl = sdioctl, 167 .d_dump = sddump, 168 .d_psize = sdsize, 169 .d_discard = nodiscard, 170 .d_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. */ 355 dkwedge_discover(&dksc->sc_dkdev); 356 357 /* 358 * Establish a shutdown hook so that we can ensure that 359 * our data has actually made it onto the platter at 360 * shutdown time. Note that this relies on the fact 361 * that the shutdown hooks at the "leaves" of the device tree 362 * are run, first (thus guaranteeing that our hook runs before 363 * our ancestors'). 364 */ 365 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 366 aprint_error_dev(self, "couldn't establish power handler\n"); 367 } 368 369 static int 370 sddetach(device_t self, int flags) 371 { 372 struct sd_softc *sd = device_private(self); 373 struct dk_softc *dksc = &sd->sc_dksc; 374 struct scsipi_periph *periph = sd->sc_periph; 375 struct scsipi_channel *chan = periph->periph_channel; 376 int bmaj, cmaj, i, mn, rc; 377 378 if ((rc = disk_begindetach(&dksc->sc_dkdev, sd_lastclose, self, flags)) != 0) 379 return rc; 380 381 /* locate the major number */ 382 bmaj = bdevsw_lookup_major(&sd_bdevsw); 383 cmaj = cdevsw_lookup_major(&sd_cdevsw); 384 385 /* Nuke the vnodes for any open instances */ 386 for (i = 0; i < MAXPARTITIONS; i++) { 387 mn = SDMINOR(device_unit(self), i); 388 vdevgone(bmaj, mn, mn, VBLK); 389 vdevgone(cmaj, mn, mn, VCHR); 390 } 391 392 /* kill any pending restart */ 393 callout_halt(&sd->sc_callout, NULL); 394 395 dk_drain(dksc); 396 397 /* Kill off any pending commands. */ 398 mutex_enter(chan_mtx(chan)); 399 scsipi_kill_pending(periph); 400 mutex_exit(chan_mtx(chan)); 401 402 bufq_free(dksc->sc_bufq); 403 404 /* Delete all of our wedges. */ 405 dkwedge_delall(&dksc->sc_dkdev); 406 407 /* Detach from the disk list. */ 408 disk_detach(&dksc->sc_dkdev); 409 disk_destroy(&dksc->sc_dkdev); 410 411 dk_detach(dksc); 412 413 callout_destroy(&sd->sc_callout); 414 415 pmf_device_deregister(self); 416 417 return (0); 418 } 419 420 /* 421 * Serialized by caller 422 */ 423 static int 424 sd_firstopen(device_t self, dev_t dev, int flag, int fmt) 425 { 426 struct sd_softc *sd = device_private(self); 427 struct scsipi_periph *periph = sd->sc_periph; 428 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 429 int error, silent; 430 int part, removable; 431 432 part = SDPART(dev); 433 434 error = scsipi_adapter_addref(adapt); 435 if (error) 436 return error; 437 438 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 439 silent = XS_CTL_SILENT; 440 else 441 silent = 0; 442 443 /* Check that it is still responding and ok. */ 444 error = scsipi_test_unit_ready(periph, 445 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 446 silent); 447 448 /* 449 * Start the pack spinning if necessary. Always allow the 450 * raw partition to be opened, for raw IOCTLs. Data transfers 451 * will check for SDEV_MEDIA_LOADED. 452 */ 453 if (error == EIO) { 454 error = scsipi_start(periph, SSS_START, silent); 455 if (error == EINVAL) 456 error = EIO; 457 } 458 if (error) 459 goto bad; 460 461 removable = (periph->periph_flags & PERIPH_REMOVABLE) != 0; 462 if (removable) { 463 /* Lock the pack in. */ 464 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 465 XS_CTL_IGNORE_ILLEGAL_REQUEST | 466 XS_CTL_IGNORE_MEDIA_CHANGE | 467 XS_CTL_SILENT); 468 if (error) 469 goto bad; 470 } 471 472 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 473 int param_error; 474 475 /* 476 * Load the physical device parameters. 477 * 478 * Note that if media is present but unformatted, 479 * we allow the open (so that it can be formatted!). 480 * The drive should refuse real I/O, if the media is 481 * unformatted. 482 */ 483 param_error = sd_get_parms(sd, &sd->params, 0); 484 if (param_error == SDGP_RESULT_OFFLINE) { 485 error = ENXIO; 486 goto bad2; 487 } 488 periph->periph_flags |= PERIPH_MEDIA_LOADED; 489 490 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 491 } 492 493 periph->periph_flags |= PERIPH_OPEN; 494 return 0; 495 496 bad2: 497 if (removable) 498 scsipi_prevent(periph, SPAMR_ALLOW, 499 XS_CTL_IGNORE_ILLEGAL_REQUEST | 500 XS_CTL_IGNORE_MEDIA_CHANGE | 501 XS_CTL_SILENT); 502 503 bad: 504 scsipi_adapter_delref(adapt); 505 return error; 506 } 507 508 /* 509 * open the device. Make sure the partition info is a up-to-date as can be. 510 */ 511 static int 512 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 513 { 514 struct sd_softc *sd; 515 struct dk_softc *dksc; 516 struct scsipi_periph *periph; 517 int unit, part; 518 int error; 519 520 unit = SDUNIT(dev); 521 sd = device_lookup_private(&sd_cd, unit); 522 if (sd == NULL) 523 return (ENXIO); 524 dksc = &sd->sc_dksc; 525 526 if (!device_is_active(dksc->sc_dev)) 527 return (ENODEV); 528 529 periph = sd->sc_periph; 530 part = SDPART(dev); 531 532 SC_DEBUG(periph, SCSIPI_DB1, 533 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", 534 dev, unit, sd_cd.cd_ndevs, SDPART(dev))); 535 536 /* 537 * If any partition is open, but the disk has been invalidated, 538 * disallow further opens of non-raw partition 539 */ 540 if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) == 541 PERIPH_OPEN) { 542 if (part != RAW_PART || fmt != S_IFCHR) 543 return EIO; 544 } 545 546 error = dk_open(dksc, dev, flag, fmt, l); 547 548 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 549 550 return error; 551 } 552 553 /* 554 * Serialized by caller 555 */ 556 static int 557 sd_lastclose(device_t self) 558 { 559 struct sd_softc *sd = device_private(self); 560 struct dk_softc *dksc = &sd->sc_dksc; 561 struct scsipi_periph *periph = sd->sc_periph; 562 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 563 564 /* 565 * If the disk cache needs flushing, and the disk supports 566 * it, do it now. 567 */ 568 if ((sd->flags & SDF_DIRTY) != 0) { 569 if (sd_flush(sd, 0)) { 570 aprint_error_dev(dksc->sc_dev, 571 "cache synchronization failed\n"); 572 sd->flags &= ~SDF_FLUSHING; 573 } else 574 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 575 } 576 577 scsipi_wait_drain(periph); 578 579 if (periph->periph_flags & PERIPH_REMOVABLE) 580 scsipi_prevent(periph, SPAMR_ALLOW, 581 XS_CTL_IGNORE_ILLEGAL_REQUEST | 582 XS_CTL_IGNORE_NOT_READY | 583 XS_CTL_SILENT); 584 periph->periph_flags &= ~PERIPH_OPEN; 585 586 scsipi_wait_drain(periph); 587 588 scsipi_adapter_delref(adapt); 589 590 return 0; 591 } 592 593 /* 594 * close the device.. only called if we are the LAST occurrence of an open 595 * device. Convenient now but usually a pain. 596 */ 597 static int 598 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 599 { 600 struct sd_softc *sd; 601 struct dk_softc *dksc; 602 int unit; 603 604 unit = SDUNIT(dev); 605 sd = device_lookup_private(&sd_cd, unit); 606 dksc = &sd->sc_dksc; 607 608 return dk_close(dksc, dev, flag, fmt, l); 609 } 610 611 /* 612 * Actually translate the requested transfer into one the physical driver 613 * can understand. The transfer is described by a buf and will include 614 * only one physical transfer. 615 */ 616 static void 617 sdstrategy(struct buf *bp) 618 { 619 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 620 struct dk_softc *dksc = &sd->sc_dksc; 621 struct scsipi_periph *periph = sd->sc_periph; 622 623 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 624 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 625 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 626 627 /* 628 * If the device has been made invalid, error out 629 */ 630 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 631 !device_is_active(dksc->sc_dev)) { 632 if (periph->periph_flags & PERIPH_OPEN) 633 bp->b_error = EIO; 634 else 635 bp->b_error = ENODEV; 636 637 bp->b_resid = bp->b_bcount; 638 biodone(bp); 639 return; 640 } 641 642 dk_strategy(dksc, bp); 643 } 644 645 /* 646 * Issue single I/O command 647 * 648 * Called from dk_start and implicitly from dk_strategy 649 */ 650 static int 651 sd_diskstart(device_t dev, struct buf *bp) 652 { 653 struct sd_softc *sd = device_private(dev); 654 struct scsipi_periph *periph = sd->sc_periph; 655 struct scsipi_channel *chan = periph->periph_channel; 656 struct scsipi_rw_16 cmd16; 657 struct scsipi_rw_10 cmd_big; 658 struct scsi_rw_6 cmd_small; 659 struct scsipi_generic *cmdp; 660 struct scsipi_xfer *xs; 661 int error, flags, nblks, cmdlen; 662 int cdb_flags; 663 bool havefua = !(periph->periph_quirks & PQUIRK_NOFUA); 664 665 mutex_enter(chan_mtx(chan)); 666 667 if (periph->periph_active >= periph->periph_openings) { 668 error = EAGAIN; 669 goto out; 670 } 671 672 /* 673 * there is excess capacity, but a special waits 674 * It'll need the adapter as soon as we clear out of the 675 * way and let it run (user level wait). 676 */ 677 if (periph->periph_flags & PERIPH_WAITING) { 678 periph->periph_flags &= ~PERIPH_WAITING; 679 cv_broadcast(periph_cv_periph(periph)); 680 error = EAGAIN; 681 goto out; 682 } 683 684 /* 685 * If the device has become invalid, abort all the 686 * reads and writes until all files have been closed and 687 * re-opened. 688 */ 689 if (__predict_false( 690 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 691 error = EIO; 692 goto out; 693 } 694 695 /* 696 * Mark the disk dirty so that the cache will be 697 * flushed on close. 698 */ 699 if ((bp->b_flags & B_READ) == 0) 700 sd->flags |= SDF_DIRTY; 701 702 if (sd->params.blksize == DEV_BSIZE) 703 nblks = bp->b_bcount >> DEV_BSHIFT; 704 else 705 nblks = howmany(bp->b_bcount, sd->params.blksize); 706 707 /* 708 * Pass FUA and/or DPO if requested. Must be done before CDB 709 * selection, as 6-byte CDB doesn't support the flags. 710 */ 711 cdb_flags = 0; 712 if (havefua) { 713 if (bp->b_flags & B_MEDIA_FUA) 714 cdb_flags |= SRWB_FUA; 715 716 if (bp->b_flags & B_MEDIA_DPO) 717 cdb_flags |= SRWB_DPO; 718 } 719 720 /* 721 * Fill out the scsi command. Use the smallest CDB possible 722 * (6-byte, 10-byte, or 16-byte). If we need FUA or DPO, 723 * need to use 10-byte or bigger, as the 6-byte doesn't support 724 * the flags. 725 */ 726 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 727 ((nblks & 0xff) == nblks) && 728 !(periph->periph_quirks & PQUIRK_ONLYBIG) && 729 !cdb_flags) { 730 /* 6-byte CDB */ 731 memset(&cmd_small, 0, sizeof(cmd_small)); 732 cmd_small.opcode = (bp->b_flags & B_READ) ? 733 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 734 _lto3b(bp->b_rawblkno, cmd_small.addr); 735 cmd_small.length = nblks & 0xff; 736 cmdlen = sizeof(cmd_small); 737 cmdp = (struct scsipi_generic *)&cmd_small; 738 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 739 /* 10-byte CDB */ 740 memset(&cmd_big, 0, sizeof(cmd_big)); 741 cmd_big.opcode = (bp->b_flags & B_READ) ? 742 READ_10 : WRITE_10; 743 _lto4b(bp->b_rawblkno, cmd_big.addr); 744 _lto2b(nblks, cmd_big.length); 745 cmdlen = sizeof(cmd_big); 746 cmdp = (struct scsipi_generic *)&cmd_big; 747 } else { 748 /* 16-byte CDB */ 749 memset(&cmd16, 0, sizeof(cmd16)); 750 cmd16.opcode = (bp->b_flags & B_READ) ? 751 READ_16 : WRITE_16; 752 _lto8b(bp->b_rawblkno, cmd16.addr); 753 _lto4b(nblks, cmd16.length); 754 cmdlen = sizeof(cmd16); 755 cmdp = (struct scsipi_generic *)&cmd16; 756 } 757 758 if (cdb_flags) 759 cmdp->bytes[0] = cdb_flags; 760 761 /* 762 * Figure out what flags to use. 763 */ 764 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 765 if (bp->b_flags & B_READ) 766 flags |= XS_CTL_DATA_IN; 767 else 768 flags |= XS_CTL_DATA_OUT; 769 770 /* 771 * Call the routine that chats with the adapter. 772 * Note: we cannot sleep as we may be an interrupt 773 */ 774 xs = scsipi_make_xs_locked(periph, cmdp, cmdlen, 775 (u_char *)bp->b_data, bp->b_bcount, 776 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 777 if (__predict_false(xs == NULL)) { 778 /* 779 * out of memory. Keep this buffer in the queue, and 780 * retry later. 781 */ 782 callout_reset(&sd->sc_callout, hz / 2, sdrestart, sd); 783 error = EAGAIN; 784 goto out; 785 } 786 787 error = scsipi_execute_xs(xs); 788 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 789 KASSERT(error == 0); 790 791 out: 792 mutex_exit(chan_mtx(chan)); 793 794 return error; 795 } 796 797 /* 798 * Recover I/O request after memory shortage 799 * 800 * Called from callout 801 */ 802 static void 803 sdrestart(void *v) 804 { 805 struct sd_softc *sd = v; 806 struct dk_softc *dksc = &sd->sc_dksc; 807 808 dk_start(dksc, NULL); 809 } 810 811 /* 812 * Recover I/O request after memory shortage 813 * 814 * Called from scsipi midlayer when resources have been freed 815 * with channel lock held 816 */ 817 static void 818 sdstart(struct scsipi_periph *periph) 819 { 820 struct sd_softc *sd = device_private(periph->periph_dev); 821 struct dk_softc *dksc = &sd->sc_dksc; 822 struct scsipi_channel *chan = periph->periph_channel; 823 824 /* 825 * release channel lock as dk_start may need to acquire 826 * other locks 827 * 828 * sdstart is called from scsipi_put_xs and all its callers 829 * release the lock afterwards. So releasing it here 830 * doesn't matter. 831 */ 832 mutex_exit(chan_mtx(chan)); 833 834 dk_start(dksc, NULL); 835 836 mutex_enter(chan_mtx(chan)); 837 } 838 839 static void 840 sddone(struct scsipi_xfer *xs, int error) 841 { 842 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 843 struct dk_softc *dksc = &sd->sc_dksc; 844 struct buf *bp = xs->bp; 845 846 if (sd->flags & SDF_FLUSHING) { 847 /* Flush completed, no longer dirty. */ 848 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 849 } 850 851 if (bp) { 852 bp->b_error = error; 853 bp->b_resid = xs->resid; 854 if (error) { 855 /* on a read/write error bp->b_resid is zero, so fix */ 856 bp->b_resid = bp->b_bcount; 857 } 858 859 dk_done(dksc, bp); 860 /* dk_start is called from scsipi_complete */ 861 } 862 } 863 864 static void 865 sdminphys(struct buf *bp) 866 { 867 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 868 struct dk_softc *dksc = &sd->sc_dksc; 869 long xmax; 870 871 /* 872 * If the device is ancient, we want to make sure that 873 * the transfer fits into a 6-byte cdb. 874 * 875 * XXX Note that the SCSI-I spec says that 256-block transfers 876 * are allowed in a 6-byte read/write, and are specified 877 * by setting the "length" to 0. However, we're conservative 878 * here, allowing only 255-block transfers in case an 879 * ancient device gets confused by length == 0. A length of 0 880 * in a 10-byte read/write actually means 0 blocks. 881 */ 882 if ((sd->flags & SDF_ANCIENT) && 883 ((sd->sc_periph->periph_flags & 884 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 885 xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff; 886 887 if (bp->b_bcount > xmax) 888 bp->b_bcount = xmax; 889 } 890 891 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 892 } 893 894 static void 895 sd_iosize(device_t dev, int *count) 896 { 897 struct buf B; 898 int bmaj; 899 900 bmaj = bdevsw_lookup_major(&sd_bdevsw); 901 B.b_dev = MAKESDDEV(bmaj,device_unit(dev),RAW_PART); 902 B.b_bcount = *count; 903 904 sdminphys(&B); 905 906 *count = B.b_bcount; 907 } 908 909 static int 910 sdread(dev_t dev, struct uio *uio, int ioflag) 911 { 912 913 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 914 } 915 916 static int 917 sdwrite(dev_t dev, struct uio *uio, int ioflag) 918 { 919 920 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 921 } 922 923 /* 924 * Perform special action on behalf of the user 925 * Knows about the internals of this device 926 */ 927 static int 928 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 929 { 930 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 931 struct dk_softc *dksc = &sd->sc_dksc; 932 struct scsipi_periph *periph = sd->sc_periph; 933 934 int part = SDPART(dev); 935 int error; 936 937 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 938 939 /* 940 * If the device is not valid, some IOCTLs can still be 941 * handled on the raw partition. Check this here. 942 */ 943 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 944 part != RAW_PART) 945 return (EIO); 946 947 switch (cmd) { 948 case DIOCLOCK: 949 if (periph->periph_flags & PERIPH_REMOVABLE) 950 return (scsipi_prevent(periph, 951 (*(int *)addr) ? 952 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 953 else 954 return (ENOTTY); 955 956 case DIOCEJECT: 957 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 958 return (ENOTTY); 959 if (*(int *)addr == 0) { 960 int pmask = __BIT(part); 961 /* 962 * Don't force eject: check that we are the only 963 * partition open. If so, unlock it. 964 */ 965 if (DK_BUSY(dksc, pmask) == 0) { 966 error = scsipi_prevent(periph, SPAMR_ALLOW, 967 XS_CTL_IGNORE_NOT_READY); 968 if (error) 969 return (error); 970 } else { 971 return (EBUSY); 972 } 973 } 974 /* FALLTHROUGH */ 975 case ODIOCEJECT: 976 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 977 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 978 979 case DIOCGCACHE: 980 return (sd_getcache(sd, (int *) addr)); 981 982 case DIOCSCACHE: 983 if ((flag & FWRITE) == 0) 984 return (EBADF); 985 return (sd_setcache(sd, *(int *) addr)); 986 987 case DIOCCACHESYNC: 988 /* 989 * XXX Do we really need to care about having a writable 990 * file descriptor here? 991 */ 992 if ((flag & FWRITE) == 0) 993 return (EBADF); 994 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 995 error = sd_flush(sd, 0); 996 if (error) { 997 sd->flags &= ~SDF_FLUSHING; 998 return (error); 999 } 1000 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1001 } 1002 return (0); 1003 1004 default: 1005 error = dk_ioctl(dksc, dev, cmd, addr, flag, l); 1006 if (error == ENOTTY) 1007 error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, l); 1008 return (error); 1009 } 1010 1011 #ifdef DIAGNOSTIC 1012 panic("sdioctl: impossible"); 1013 #endif 1014 } 1015 1016 static void 1017 sd_label(device_t self, struct disklabel *lp) 1018 { 1019 struct sd_softc *sd = device_private(self); 1020 1021 strncpy(lp->d_typename, sd->name, 16); 1022 lp->d_rpm = sd->params.rot_rate; 1023 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) 1024 lp->d_flags |= D_REMOVABLE; 1025 } 1026 1027 static bool 1028 sd_shutdown(device_t self, int how) 1029 { 1030 struct sd_softc *sd = device_private(self); 1031 struct dk_softc *dksc = &sd->sc_dksc; 1032 1033 /* 1034 * If the disk cache needs to be flushed, and the disk supports 1035 * it, flush it. We're cold at this point, so we poll for 1036 * completion. 1037 */ 1038 if ((sd->flags & SDF_DIRTY) != 0) { 1039 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1040 aprint_error_dev(dksc->sc_dev, 1041 "cache synchronization failed\n"); 1042 sd->flags &= ~SDF_FLUSHING; 1043 } else 1044 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1045 } 1046 return true; 1047 } 1048 1049 static bool 1050 sd_suspend(device_t dv, const pmf_qual_t *qual) 1051 { 1052 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1053 } 1054 1055 /* 1056 * Check Errors 1057 */ 1058 static int 1059 sd_interpret_sense(struct scsipi_xfer *xs) 1060 { 1061 struct scsipi_periph *periph = xs->xs_periph; 1062 struct scsipi_channel *chan = periph->periph_channel; 1063 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1064 struct sd_softc *sd = device_private(periph->periph_dev); 1065 struct dk_softc *dksc = &sd->sc_dksc; 1066 int error, retval = EJUSTRETURN; 1067 1068 /* 1069 * If the periph is already recovering, just do the normal 1070 * error processing. 1071 */ 1072 if (periph->periph_flags & PERIPH_RECOVERING) 1073 return (retval); 1074 1075 /* 1076 * Ignore errors from accessing illegal fields (e.g. trying to 1077 * lock the door of a digicam, which doesn't have a door that 1078 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1079 */ 1080 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1081 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1082 sense->asc == 0x24 && 1083 sense->ascq == 0x00) { /* Illegal field in CDB */ 1084 if (!(xs->xs_control & XS_CTL_SILENT)) { 1085 scsipi_printaddr(periph); 1086 printf("no door lock\n"); 1087 } 1088 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1089 return (retval); 1090 } 1091 1092 1093 1094 /* 1095 * If the device is not open yet, let the generic code handle it. 1096 */ 1097 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1098 return (retval); 1099 1100 /* 1101 * If it isn't a extended or extended/deferred error, let 1102 * the generic code handle it. 1103 */ 1104 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1105 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1106 return (retval); 1107 1108 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1109 sense->asc == 0x4) { 1110 if (sense->ascq == 0x01) { 1111 /* 1112 * Unit In The Process Of Becoming Ready. 1113 */ 1114 printf("%s: waiting for pack to spin up...\n", 1115 dksc->sc_xname); 1116 if (!callout_pending(&periph->periph_callout)) 1117 scsipi_periph_freeze(periph, 1); 1118 callout_reset(&periph->periph_callout, 1119 5 * hz, scsipi_periph_timed_thaw, periph); 1120 retval = ERESTART; 1121 } else if (sense->ascq == 0x02) { 1122 printf("%s: pack is stopped, restarting...\n", 1123 dksc->sc_xname); 1124 mutex_enter(chan_mtx(chan)); 1125 periph->periph_flags |= PERIPH_RECOVERING; 1126 mutex_exit(chan_mtx(chan)); 1127 error = scsipi_start(periph, SSS_START, 1128 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1129 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1130 if (error) { 1131 aprint_error_dev(dksc->sc_dev, 1132 "unable to restart pack\n"); 1133 retval = error; 1134 } else 1135 retval = ERESTART; 1136 mutex_enter(chan_mtx(chan)); 1137 periph->periph_flags &= ~PERIPH_RECOVERING; 1138 mutex_exit(chan_mtx(chan)); 1139 } 1140 } 1141 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1142 sense->asc == 0x31 && 1143 sense->ascq == 0x00) { /* maybe for any asq ? */ 1144 /* Medium Format Corrupted */ 1145 retval = EFTYPE; 1146 } 1147 return (retval); 1148 } 1149 1150 1151 static int 1152 sdsize(dev_t dev) 1153 { 1154 struct sd_softc *sd; 1155 struct dk_softc *dksc; 1156 int unit; 1157 1158 unit = SDUNIT(dev); 1159 sd = device_lookup_private(&sd_cd, unit); 1160 if (sd == NULL) 1161 return (-1); 1162 dksc = &sd->sc_dksc; 1163 1164 if (!device_is_active(dksc->sc_dev)) 1165 return (-1); 1166 1167 return dk_size(dksc, dev); 1168 } 1169 1170 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1171 static struct scsipi_xfer sx; 1172 1173 /* 1174 * dump all of physical memory into the partition specified, starting 1175 * at offset 'dumplo' into the partition. 1176 */ 1177 static int 1178 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1179 { 1180 struct sd_softc *sd; 1181 struct dk_softc *dksc; 1182 struct scsipi_periph *periph; 1183 int unit; 1184 1185 unit = SDUNIT(dev); 1186 if ((sd = device_lookup_private(&sd_cd, unit)) == NULL) 1187 return (ENXIO); 1188 dksc = &sd->sc_dksc; 1189 1190 if (!device_is_active(dksc->sc_dev)) 1191 return (ENODEV); 1192 1193 periph = sd->sc_periph; 1194 1195 /* Make sure it was initialized. */ 1196 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1197 return (ENXIO); 1198 1199 return dk_dump(dksc, dev, blkno, va, size, 0); 1200 } 1201 1202 static int 1203 sd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1204 { 1205 struct sd_softc *sd = device_private(dev); 1206 struct dk_softc *dksc = &sd->sc_dksc; 1207 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1208 struct scsipi_rw_10 cmd; /* write command */ 1209 struct scsipi_xfer *xs; /* ... convenience */ 1210 struct scsipi_periph *periph; 1211 struct scsipi_channel *chan; 1212 size_t sectorsize; 1213 1214 periph = sd->sc_periph; 1215 chan = periph->periph_channel; 1216 1217 sectorsize = dg->dg_secsize; 1218 1219 xs = &sx; 1220 1221 #ifndef SD_DUMP_NOT_TRUSTED 1222 /* 1223 * Fill out the scsi command 1224 */ 1225 memset(&cmd, 0, sizeof(cmd)); 1226 cmd.opcode = WRITE_10; 1227 _lto4b(blkno, cmd.addr); 1228 _lto2b(nblk, cmd.length); 1229 /* 1230 * Fill out the scsipi_xfer structure 1231 * Note: we cannot sleep as we may be an interrupt 1232 * don't use scsipi_command() as it may want to wait 1233 * for an xs. 1234 */ 1235 memset(xs, 0, sizeof(sx)); 1236 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1237 XS_CTL_DATA_OUT; 1238 xs->xs_status = 0; 1239 xs->xs_periph = periph; 1240 xs->xs_retries = SDRETRIES; 1241 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1242 xs->cmd = (struct scsipi_generic *)&cmd; 1243 xs->cmdlen = sizeof(cmd); 1244 xs->resid = nblk * sectorsize; 1245 xs->error = XS_NOERROR; 1246 xs->bp = 0; 1247 xs->data = va; 1248 xs->datalen = nblk * sectorsize; 1249 callout_init(&xs->xs_callout, 0); 1250 1251 /* 1252 * Pass all this info to the scsi driver. 1253 */ 1254 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1255 if ((xs->xs_status & XS_STS_DONE) == 0 || 1256 xs->error != XS_NOERROR) 1257 return (EIO); 1258 #else /* SD_DUMP_NOT_TRUSTED */ 1259 /* Let's just talk about this first... */ 1260 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1261 delay(500 * 1000); /* half a second */ 1262 #endif /* SD_DUMP_NOT_TRUSTED */ 1263 1264 return (0); 1265 } 1266 1267 static int 1268 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1269 int page, int flags, int *big) 1270 { 1271 1272 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1273 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1274 *big = 1; 1275 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1276 size + sizeof(struct scsi_mode_parameter_header_10), 1277 flags, SDRETRIES, 6000); 1278 } else { 1279 *big = 0; 1280 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1281 size + sizeof(struct scsi_mode_parameter_header_6), 1282 flags, SDRETRIES, 6000); 1283 } 1284 } 1285 1286 static int 1287 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1288 int flags, int big) 1289 { 1290 1291 if (big) { 1292 struct scsi_mode_parameter_header_10 *header = sense; 1293 1294 _lto2b(0, header->data_length); 1295 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1296 size + sizeof(struct scsi_mode_parameter_header_10), 1297 flags, SDRETRIES, 6000); 1298 } else { 1299 struct scsi_mode_parameter_header_6 *header = sense; 1300 1301 header->data_length = 0; 1302 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1303 size + sizeof(struct scsi_mode_parameter_header_6), 1304 flags, SDRETRIES, 6000); 1305 } 1306 } 1307 1308 /* 1309 * sd_validate_blksize: 1310 * 1311 * Validate the block size. Print error if periph is specified, 1312 */ 1313 static int 1314 sd_validate_blksize(struct scsipi_periph *periph, int len) 1315 { 1316 1317 if (len >= 256 && powerof2(len) && len <= 4096) { 1318 return 1; 1319 } 1320 1321 if (periph) { 1322 scsipi_printaddr(periph); 1323 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1324 !powerof2(len) ? 1325 "preposterous" : "unsupported", 1326 len, SD_DEFAULT_BLKSIZE); 1327 } 1328 1329 return 0; 1330 } 1331 1332 /* 1333 * sd_read_capacity: 1334 * 1335 * Find out from the device what its capacity is. 1336 */ 1337 static u_int64_t 1338 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1339 { 1340 union { 1341 struct scsipi_read_capacity_10 cmd; 1342 struct scsipi_read_capacity_16 cmd16; 1343 } cmd; 1344 union { 1345 struct scsipi_read_capacity_10_data data; 1346 struct scsipi_read_capacity_16_data data16; 1347 } *datap; 1348 uint64_t rv; 1349 1350 memset(&cmd, 0, sizeof(cmd)); 1351 cmd.cmd.opcode = READ_CAPACITY_10; 1352 1353 /* 1354 * Don't allocate data buffer on stack; 1355 * The lower driver layer might use the same stack and 1356 * if it uses region which is in the same cacheline, 1357 * cache flush ops against the data buffer won't work properly. 1358 */ 1359 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1360 if (datap == NULL) 1361 return 0; 1362 1363 /* 1364 * If the command works, interpret the result as a 4 byte 1365 * number of blocks 1366 */ 1367 rv = 0; 1368 memset(datap, 0, sizeof(datap->data)); 1369 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1370 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1371 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1372 goto out; 1373 1374 if (_4btol(datap->data.addr) != 0xffffffff) { 1375 *blksize = _4btol(datap->data.length); 1376 rv = _4btol(datap->data.addr) + 1; 1377 goto out; 1378 } 1379 1380 /* 1381 * Device is larger than can be reflected by READ CAPACITY (10). 1382 * Try READ CAPACITY (16). 1383 */ 1384 1385 memset(&cmd, 0, sizeof(cmd)); 1386 cmd.cmd16.opcode = READ_CAPACITY_16; 1387 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1388 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1389 1390 memset(datap, 0, sizeof(datap->data16)); 1391 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1392 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1393 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1394 goto out; 1395 1396 *blksize = _4btol(datap->data16.length); 1397 rv = _8btol(datap->data16.addr) + 1; 1398 1399 out: 1400 free(datap, M_TEMP); 1401 return rv; 1402 } 1403 1404 static int 1405 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1406 { 1407 struct { 1408 struct scsi_mode_parameter_header_6 header; 1409 /* no block descriptor */ 1410 u_int8_t pg_code; /* page code (should be 6) */ 1411 u_int8_t pg_length; /* page length (should be 11) */ 1412 u_int8_t wcd; /* bit0: cache disable */ 1413 u_int8_t lbs[2]; /* logical block size */ 1414 u_int8_t size[5]; /* number of log. blocks */ 1415 u_int8_t pp; /* power/performance */ 1416 u_int8_t flags; 1417 u_int8_t resvd; 1418 } scsipi_sense; 1419 u_int64_t blocks; 1420 int error, blksize; 1421 1422 /* 1423 * sd_read_capacity (ie "read capacity") and mode sense page 6 1424 * give the same information. Do both for now, and check 1425 * for consistency. 1426 * XXX probably differs for removable media 1427 */ 1428 dp->blksize = SD_DEFAULT_BLKSIZE; 1429 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1430 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1431 1432 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1433 &scsipi_sense.header, sizeof(scsipi_sense), 1434 flags, SDRETRIES, 6000); 1435 1436 if (error != 0) 1437 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1438 1439 dp->blksize = blksize; 1440 if (!sd_validate_blksize(NULL, dp->blksize)) 1441 dp->blksize = _2btol(scsipi_sense.lbs); 1442 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1443 dp->blksize = SD_DEFAULT_BLKSIZE; 1444 1445 /* 1446 * Create a pseudo-geometry. 1447 */ 1448 dp->heads = 64; 1449 dp->sectors = 32; 1450 dp->cyls = blocks / (dp->heads * dp->sectors); 1451 dp->disksize = _5btol(scsipi_sense.size); 1452 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1453 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1454 (unsigned long long)dp->disksize, 1455 (unsigned long long)blocks); 1456 dp->disksize = blocks; 1457 } 1458 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1459 1460 return (SDGP_RESULT_OK); 1461 } 1462 1463 /* 1464 * Get the scsi driver to send a full inquiry to the * device and use the 1465 * results to fill out the disk parameter structure. 1466 */ 1467 static int 1468 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1469 { 1470 u_int64_t blocks; 1471 int error, blksize; 1472 #if 0 1473 int i; 1474 u_int8_t *p; 1475 #endif 1476 1477 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1478 flags); 1479 if (blocks == 0) { 1480 struct scsipi_read_format_capacities cmd; 1481 struct { 1482 struct scsipi_capacity_list_header header; 1483 struct scsipi_capacity_descriptor desc; 1484 } __packed data; 1485 1486 memset(&cmd, 0, sizeof(cmd)); 1487 memset(&data, 0, sizeof(data)); 1488 cmd.opcode = READ_FORMAT_CAPACITIES; 1489 _lto2b(sizeof(data), cmd.length); 1490 1491 error = scsipi_command(sd->sc_periph, 1492 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1493 SDRETRIES, 20000, NULL, 1494 flags | XS_CTL_DATA_IN); 1495 if (error == EFTYPE) { 1496 /* Medium Format Corrupted, handle as not formatted */ 1497 return (SDGP_RESULT_UNFORMATTED); 1498 } 1499 if (error || data.header.length == 0) 1500 return (SDGP_RESULT_OFFLINE); 1501 1502 #if 0 1503 printf("rfc: length=%d\n", data.header.length); 1504 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"); 1505 #endif 1506 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1507 case SCSIPI_CAP_DESC_CODE_RESERVED: 1508 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1509 break; 1510 1511 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1512 return (SDGP_RESULT_UNFORMATTED); 1513 1514 case SCSIPI_CAP_DESC_CODE_NONE: 1515 return (SDGP_RESULT_OFFLINE); 1516 } 1517 1518 dp->disksize = blocks = _4btol(data.desc.nblks); 1519 if (blocks == 0) 1520 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1521 1522 blksize = _3btol(data.desc.blklen); 1523 1524 } else if (!sd_validate_blksize(NULL, blksize)) { 1525 struct sd_mode_sense_data scsipi_sense; 1526 int big, bsize; 1527 struct scsi_general_block_descriptor *bdesc; 1528 1529 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1530 error = sd_mode_sense(sd, 0, &scsipi_sense, 1531 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1532 if (!error) { 1533 if (big) { 1534 bdesc = (void *)(&scsipi_sense.header.big + 1); 1535 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1536 } else { 1537 bdesc = (void *)(&scsipi_sense.header.small + 1); 1538 bsize = scsipi_sense.header.small.blk_desc_len; 1539 } 1540 1541 #if 0 1542 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1543 printf("page 0 bsize=%d\n", bsize); 1544 printf("page 0 ok\n"); 1545 #endif 1546 1547 if (bsize >= 8) { 1548 blksize = _3btol(bdesc->blklen); 1549 } 1550 } 1551 } 1552 1553 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1554 blksize = SD_DEFAULT_BLKSIZE; 1555 1556 dp->blksize = blksize; 1557 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1558 return (0); 1559 } 1560 1561 static int 1562 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1563 { 1564 struct sd_mode_sense_data scsipi_sense; 1565 int error; 1566 int big, byte2; 1567 size_t poffset; 1568 union scsi_disk_pages *pages; 1569 1570 byte2 = SMS_DBD; 1571 again: 1572 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1573 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1574 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1575 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1576 flags | XS_CTL_SILENT, &big); 1577 if (error) { 1578 if (byte2 == SMS_DBD) { 1579 /* No result; try once more with DBD off */ 1580 byte2 = 0; 1581 goto again; 1582 } 1583 return (error); 1584 } 1585 1586 if (big) { 1587 poffset = sizeof scsipi_sense.header.big; 1588 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1589 } else { 1590 poffset = sizeof scsipi_sense.header.small; 1591 poffset += scsipi_sense.header.small.blk_desc_len; 1592 } 1593 1594 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1595 return ERESTART; 1596 1597 pages = (void *)((u_long)&scsipi_sense + poffset); 1598 #if 0 1599 { 1600 size_t i; 1601 u_int8_t *p; 1602 1603 printf("page 4 sense:"); 1604 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1605 i--, p++) 1606 printf(" %02x", *p); 1607 printf("\n"); 1608 printf("page 4 pg_code=%d sense=%p/%p\n", 1609 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1610 } 1611 #endif 1612 1613 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1614 return (ERESTART); 1615 1616 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1617 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1618 _3btol(pages->rigid_geometry.ncyl), 1619 pages->rigid_geometry.nheads, 1620 _2btol(pages->rigid_geometry.st_cyl_wp), 1621 _2btol(pages->rigid_geometry.st_cyl_rwc), 1622 _2btol(pages->rigid_geometry.land_zone))); 1623 1624 /* 1625 * KLUDGE!! (for zone recorded disks) 1626 * give a number of sectors so that sec * trks * cyls 1627 * is <= disk_size 1628 * can lead to wasted space! THINK ABOUT THIS ! 1629 */ 1630 dp->heads = pages->rigid_geometry.nheads; 1631 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1632 if (dp->heads == 0 || dp->cyls == 0) 1633 return (ERESTART); 1634 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1635 1636 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1637 if (dp->rot_rate == 0) 1638 dp->rot_rate = 3600; 1639 1640 #if 0 1641 printf("page 4 ok\n"); 1642 #endif 1643 return (0); 1644 } 1645 1646 static int 1647 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1648 { 1649 struct sd_mode_sense_data scsipi_sense; 1650 int error; 1651 int big, byte2; 1652 size_t poffset; 1653 union scsi_disk_pages *pages; 1654 1655 byte2 = SMS_DBD; 1656 again: 1657 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1658 error = sd_mode_sense(sd, 0, &scsipi_sense, 1659 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1660 sizeof(scsipi_sense.pages.flex_geometry), 5, 1661 flags | XS_CTL_SILENT, &big); 1662 if (error) { 1663 if (byte2 == SMS_DBD) { 1664 /* No result; try once more with DBD off */ 1665 byte2 = 0; 1666 goto again; 1667 } 1668 return (error); 1669 } 1670 1671 if (big) { 1672 poffset = sizeof scsipi_sense.header.big; 1673 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1674 } else { 1675 poffset = sizeof scsipi_sense.header.small; 1676 poffset += scsipi_sense.header.small.blk_desc_len; 1677 } 1678 1679 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 1680 return ERESTART; 1681 1682 pages = (void *)((u_long)&scsipi_sense + poffset); 1683 #if 0 1684 { 1685 size_t i; 1686 u_int8_t *p; 1687 1688 printf("page 5 sense:"); 1689 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1690 i--, p++) 1691 printf(" %02x", *p); 1692 printf("\n"); 1693 printf("page 5 pg_code=%d sense=%p/%p\n", 1694 pages->flex_geometry.pg_code, &scsipi_sense, pages); 1695 } 1696 #endif 1697 1698 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1699 return (ERESTART); 1700 1701 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1702 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1703 _3btol(pages->flex_geometry.ncyl), 1704 pages->flex_geometry.nheads, 1705 pages->flex_geometry.ph_sec_tr, 1706 _2btol(pages->flex_geometry.bytes_s))); 1707 1708 dp->heads = pages->flex_geometry.nheads; 1709 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1710 dp->sectors = pages->flex_geometry.ph_sec_tr; 1711 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1712 return (ERESTART); 1713 1714 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1715 if (dp->rot_rate == 0) 1716 dp->rot_rate = 3600; 1717 1718 #if 0 1719 printf("page 5 ok\n"); 1720 #endif 1721 return (0); 1722 } 1723 1724 static int 1725 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1726 { 1727 struct dk_softc *dksc = &sd->sc_dksc; 1728 int error; 1729 1730 /* 1731 * If offline, the SDEV_MEDIA_LOADED flag will be 1732 * cleared by the caller if necessary. 1733 */ 1734 if (sd->type == T_SIMPLE_DIRECT) { 1735 error = sd_get_simplifiedparms(sd, dp, flags); 1736 if (!error) 1737 goto setprops; 1738 return (error); 1739 } 1740 1741 error = sd_get_capacity(sd, dp, flags); 1742 if (error) 1743 return (error); 1744 1745 if (sd->type == T_OPTICAL) 1746 goto page0; 1747 1748 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1749 if (!sd_get_parms_page5(sd, dp, flags) || 1750 !sd_get_parms_page4(sd, dp, flags)) 1751 goto setprops; 1752 } else { 1753 if (!sd_get_parms_page4(sd, dp, flags) || 1754 !sd_get_parms_page5(sd, dp, flags)) 1755 goto setprops; 1756 } 1757 1758 page0: 1759 printf("%s: fabricating a geometry\n", dksc->sc_xname); 1760 /* Try calling driver's method for figuring out geometry. */ 1761 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1762 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1763 (sd->sc_periph, dp, dp->disksize)) { 1764 /* 1765 * Use adaptec standard fictitious geometry 1766 * this depends on which controller (e.g. 1542C is 1767 * different. but we have to put SOMETHING here..) 1768 */ 1769 dp->heads = 64; 1770 dp->sectors = 32; 1771 dp->cyls = dp->disksize / (64 * 32); 1772 } 1773 dp->rot_rate = 3600; 1774 1775 setprops: 1776 sd_set_geometry(sd); 1777 1778 return (SDGP_RESULT_OK); 1779 } 1780 1781 static int 1782 sd_flush(struct sd_softc *sd, int flags) 1783 { 1784 struct scsipi_periph *periph = sd->sc_periph; 1785 struct scsi_synchronize_cache_10 cmd; 1786 1787 /* 1788 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1789 * We issue with address 0 length 0, which should be 1790 * interpreted by the device as "all remaining blocks 1791 * starting at address 0". We ignore ILLEGAL REQUEST 1792 * in the event that the command is not supported by 1793 * the device, and poll for completion so that we know 1794 * that the cache has actually been flushed. 1795 * 1796 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1797 * command, as indicated by our quirks flags. 1798 * 1799 * XXX What about older devices? 1800 */ 1801 if (periph->periph_version < 2 || 1802 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1803 return (0); 1804 1805 sd->flags |= SDF_FLUSHING; 1806 memset(&cmd, 0, sizeof(cmd)); 1807 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1808 1809 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1810 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1811 } 1812 1813 static int 1814 sd_getcache(struct sd_softc *sd, int *bitsp) 1815 { 1816 struct scsipi_periph *periph = sd->sc_periph; 1817 struct sd_mode_sense_data scsipi_sense; 1818 int error, bits = 0; 1819 int big; 1820 union scsi_disk_pages *pages; 1821 uint8_t dev_spec; 1822 1823 /* only SCSI-2 and later supported */ 1824 if (periph->periph_version < 2) 1825 return (EOPNOTSUPP); 1826 1827 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1828 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1829 sizeof(scsipi_sense.pages.caching_params), 8, XS_CTL_SILENT, &big); 1830 if (error) 1831 return (error); 1832 1833 if (big) { 1834 pages = (void *)(&scsipi_sense.header.big + 1); 1835 dev_spec = scsipi_sense.header.big.dev_spec; 1836 } else { 1837 pages = (void *)(&scsipi_sense.header.small + 1); 1838 dev_spec = scsipi_sense.header.small.dev_spec; 1839 } 1840 1841 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1842 bits |= DKCACHE_READ; 1843 if (pages->caching_params.flags & CACHING_WCE) 1844 bits |= DKCACHE_WRITE; 1845 if (pages->caching_params.pg_code & PGCODE_PS) 1846 bits |= DKCACHE_SAVE; 1847 1848 /* 1849 * Support for FUA/DPO, defined starting with SCSI-2. Use only 1850 * if device claims to support it, according to the MODE SENSE. 1851 */ 1852 if (!(periph->periph_quirks & PQUIRK_NOFUA) && 1853 ISSET(dev_spec, SMH_DSP_DPOFUA)) 1854 bits |= DKCACHE_FUA | DKCACHE_DPO; 1855 1856 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1857 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1858 sizeof(scsipi_sense.pages.caching_params), 1859 SMS_PCTRL_CHANGEABLE|8, XS_CTL_SILENT, &big); 1860 if (error == 0) { 1861 if (big) 1862 pages = (void *)(&scsipi_sense.header.big + 1); 1863 else 1864 pages = (void *)(&scsipi_sense.header.small + 1); 1865 1866 if (pages->caching_params.flags & CACHING_RCD) 1867 bits |= DKCACHE_RCHANGE; 1868 if (pages->caching_params.flags & CACHING_WCE) 1869 bits |= DKCACHE_WCHANGE; 1870 } 1871 1872 *bitsp = bits; 1873 1874 return (0); 1875 } 1876 1877 static int 1878 sd_setcache(struct sd_softc *sd, int bits) 1879 { 1880 struct scsipi_periph *periph = sd->sc_periph; 1881 struct sd_mode_sense_data scsipi_sense; 1882 int error; 1883 uint8_t oflags, byte2 = 0; 1884 int big; 1885 union scsi_disk_pages *pages; 1886 1887 if (periph->periph_version < 2) 1888 return (EOPNOTSUPP); 1889 1890 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1891 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1892 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1893 if (error) 1894 return (error); 1895 1896 if (big) 1897 pages = (void *)(&scsipi_sense.header.big + 1); 1898 else 1899 pages = (void *)(&scsipi_sense.header.small + 1); 1900 1901 oflags = pages->caching_params.flags; 1902 1903 if (bits & DKCACHE_READ) 1904 pages->caching_params.flags &= ~CACHING_RCD; 1905 else 1906 pages->caching_params.flags |= CACHING_RCD; 1907 1908 if (bits & DKCACHE_WRITE) 1909 pages->caching_params.flags |= CACHING_WCE; 1910 else 1911 pages->caching_params.flags &= ~CACHING_WCE; 1912 1913 if (oflags == pages->caching_params.flags) 1914 return (0); 1915 1916 pages->caching_params.pg_code &= PGCODE_MASK; 1917 1918 if (bits & DKCACHE_SAVE) 1919 byte2 |= SMS_SP; 1920 1921 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 1922 sizeof(struct scsi_mode_page_header) + 1923 pages->caching_params.pg_length, 0, big)); 1924 } 1925 1926 static void 1927 sd_set_geometry(struct sd_softc *sd) 1928 { 1929 struct dk_softc *dksc = &sd->sc_dksc; 1930 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1931 1932 memset(dg, 0, sizeof(*dg)); 1933 1934 dg->dg_secperunit = sd->params.disksize; 1935 dg->dg_secsize = sd->params.blksize; 1936 dg->dg_nsectors = sd->params.sectors; 1937 dg->dg_ntracks = sd->params.heads; 1938 dg->dg_ncylinders = sd->params.cyls; 1939 1940 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, sd->typename); 1941 } 1942
Indexes created Tue Sep 23 23:09:58 GMT 2025