sd.c revision 1.342
1 /* $NetBSD: sd.c,v 1.342 2025/03/02 14:13:22 riastradh 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) 47 * Sept 1992 48 */ 49 50 #include <sys/cdefs.h> 51 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.342 2025/03/02 14:13:22 riastradh Exp $"); 52 53 #ifdef _KERNEL_OPT 54 #include "opt_scsi.h" 55 #endif 56 57 #include <sys/param.h> 58 #include <sys/systm.h> 59 #include <sys/kernel.h> 60 #include <sys/file.h> 61 #include <sys/stat.h> 62 #include <sys/ioctl.h> 63 #include <sys/scsiio.h> 64 #include <sys/buf.h> 65 #include <sys/bufq.h> 66 #include <sys/uio.h> 67 #include <sys/malloc.h> 68 #include <sys/errno.h> 69 #include <sys/device.h> 70 #include <sys/disklabel.h> 71 #include <sys/disk.h> 72 #include <sys/proc.h> 73 #include <sys/conf.h> 74 #include <sys/vnode.h> 75 76 #include <dev/scsipi/scsi_spc.h> 77 #include <dev/scsipi/scsipi_all.h> 78 #include <dev/scsipi/scsi_all.h> 79 #include <dev/scsipi/scsipi_disk.h> 80 #include <dev/scsipi/scsi_disk.h> 81 #include <dev/scsipi/scsiconf.h> 82 #include <dev/scsipi/scsipi_base.h> 83 #include <dev/scsipi/sdvar.h> 84 85 #include <prop/proplib.h> 86 87 #define SDUNIT(dev) DISKUNIT(dev) 88 #define SDPART(dev) DISKPART(dev) 89 #define SDMINOR(unit, part) DISKMINOR(unit, part) 90 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 91 92 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 93 94 #define SD_DEFAULT_BLKSIZE 512 95 96 static void sdminphys(struct buf *); 97 static void sdstart(struct scsipi_periph *); 98 static void sdrestart(void *); 99 static void sddone(struct scsipi_xfer *, int); 100 static bool sd_suspend(device_t, const pmf_qual_t *); 101 static bool sd_shutdown(device_t, int); 102 static int sd_interpret_sense(struct scsipi_xfer *); 103 static int sd_diskstart(device_t, struct buf *); 104 static int sd_dumpblocks(device_t, void *, daddr_t, int); 105 static void sd_iosize(device_t, int *); 106 static int sd_lastclose(device_t); 107 static int sd_firstopen(device_t, dev_t, int, int); 108 static void sd_label(device_t, struct disklabel *); 109 static int sd_discard(device_t, off_t, off_t); 110 111 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 112 int, int *); 113 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, 114 int, int); 115 static int sd_validate_blksize(struct scsipi_periph *, int); 116 static u_int64_t sd_read_capacity(struct sd_softc *, int *, int flags); 117 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 118 int); 119 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 120 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 121 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 122 int); 123 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 124 int); 125 126 static int sd_flush(struct sd_softc *, int); 127 static int sd_getcache(struct sd_softc *, int *); 128 static int sd_setcache(struct sd_softc *, int); 129 130 static int sdmatch(device_t, cfdata_t, void *); 131 static void sdattach(device_t, device_t, void *); 132 static int sddetach(device_t, int); 133 static void sd_set_geometry(struct sd_softc *); 134 135 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 136 NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 137 138 extern struct cfdriver sd_cd; 139 140 static const struct scsipi_inquiry_pattern sd_patterns[] = { 141 {T_DIRECT, T_FIXED, 142 "", "", ""}, 143 {T_DIRECT, T_REMOV, 144 "", "", ""}, 145 {T_OPTICAL, T_FIXED, 146 "", "", ""}, 147 {T_OPTICAL, T_REMOV, 148 "", "", ""}, 149 {T_SIMPLE_DIRECT, T_FIXED, 150 "", "", ""}, 151 {T_SIMPLE_DIRECT, T_REMOV, 152 "", "", ""}, 153 }; 154 155 static dev_type_open(sdopen); 156 static dev_type_close(sdclose); 157 static dev_type_read(sdread); 158 static dev_type_write(sdwrite); 159 static dev_type_ioctl(sdioctl); 160 static dev_type_strategy(sdstrategy); 161 static dev_type_dump(sddump); 162 static dev_type_size(sdsize); 163 static dev_type_discard(sddiscard); 164 165 const struct bdevsw sd_bdevsw = { 166 .d_open = sdopen, 167 .d_close = sdclose, 168 .d_strategy = sdstrategy, 169 .d_ioctl = sdioctl, 170 .d_dump = sddump, 171 .d_psize = sdsize, 172 .d_discard = sddiscard, 173 .d_cfdriver = &sd_cd, 174 .d_devtounit = disklabel_dev_unit, 175 .d_flag = D_DISK | D_MPSAFE 176 }; 177 178 const struct cdevsw sd_cdevsw = { 179 .d_open = sdopen, 180 .d_close = sdclose, 181 .d_read = sdread, 182 .d_write = sdwrite, 183 .d_ioctl = sdioctl, 184 .d_stop = nostop, 185 .d_tty = notty, 186 .d_poll = nopoll, 187 .d_mmap = nommap, 188 .d_kqfilter = nokqfilter, 189 .d_discard = sddiscard, 190 .d_cfdriver = &sd_cd, 191 .d_devtounit = disklabel_dev_unit, 192 .d_flag = D_DISK | D_MPSAFE 193 }; 194 195 static const struct dkdriver sddkdriver = { 196 .d_open = sdopen, 197 .d_close = sdclose, 198 .d_strategy = sdstrategy, 199 .d_minphys = sdminphys, 200 .d_diskstart = sd_diskstart, 201 .d_dumpblocks = sd_dumpblocks, 202 .d_iosize = sd_iosize, 203 .d_firstopen = sd_firstopen, 204 .d_lastclose = sd_lastclose, 205 .d_label = sd_label, 206 .d_discard = sd_discard, 207 }; 208 209 static const struct scsipi_periphsw sd_switch = { 210 sd_interpret_sense, /* check our error handler first */ 211 sdstart, /* have a queue, served by this */ 212 NULL, /* have no async handler */ 213 sddone, /* deal with stats at interrupt time */ 214 }; 215 216 struct sd_mode_sense_data { 217 /* 218 * XXX 219 * We are not going to parse this as-is -- it just has to be large 220 * enough. 221 */ 222 union { 223 struct scsi_mode_parameter_header_6 small; 224 struct scsi_mode_parameter_header_10 big; 225 } header; 226 struct scsi_general_block_descriptor blk_desc; 227 union scsi_disk_pages pages; 228 }; 229 230 /* 231 * The routine called by the low level scsi routine when it discovers 232 * A device suitable for this driver 233 */ 234 static int 235 sdmatch(device_t parent, cfdata_t match, 236 void *aux) 237 { 238 struct scsipibus_attach_args *sa = aux; 239 int priority; 240 241 (void)scsipi_inqmatch(&sa->sa_inqbuf, 242 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 243 sizeof(sd_patterns[0]), &priority); 244 245 return (priority); 246 } 247 248 /* 249 * Attach routine common to atapi & scsi. 250 */ 251 static void 252 sdattach(device_t parent, device_t self, void *aux) 253 { 254 struct sd_softc *sd = device_private(self); 255 struct dk_softc *dksc = &sd->sc_dksc; 256 struct scsipibus_attach_args *sa = aux; 257 struct scsipi_periph *periph = sa->sa_periph; 258 int error, result, dtype; 259 struct disk_parms *dp = &sd->params; 260 char pbuf[9]; 261 262 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 263 264 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 265 memcpy(sd->name, sa->sa_inqbuf.product, uimin(16, sizeof(sd->name))); 266 memcpy(sd->typename, sa->sa_inqbuf.product, 267 uimin(16, sizeof(sd->typename))); 268 269 if (sd->type == T_SIMPLE_DIRECT) { 270 periph->periph_quirks |= PQUIRK_ONLYBIG; 271 periph->periph_quirks |= PQUIRK_NOBIGMODESENSE; 272 } 273 274 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph))) { 275 case SCSIPI_BUSTYPE_SCSI: 276 dtype = DKTYPE_SCSI; 277 if (periph->periph_version == 0) 278 sd->flags |= SDF_ANCIENT; 279 break; 280 case SCSIPI_BUSTYPE_ATAPI: 281 dtype = DKTYPE_ATAPI; 282 break; 283 default: 284 dtype = DKTYPE_UNKNOWN; 285 break; 286 } 287 288 /* Initialize dk and disk structure. */ 289 dk_init(dksc, self, dtype); 290 disk_init(&dksc->sc_dkdev, dksc->sc_xname, &sddkdriver); 291 292 /* Attach dk and disk subsystems */ 293 dk_attach(dksc); 294 disk_attach(&dksc->sc_dkdev); 295 296 bufq_alloc(&dksc->sc_bufq, BUFQ_DISK_DEFAULT_STRAT, 297 BUFQ_SORT_RAWBLOCK); 298 299 callout_init(&sd->sc_callout, 0); 300 301 /* 302 * Store information needed to contact our base driver 303 */ 304 sd->sc_periph = periph; 305 306 periph->periph_dev = dksc->sc_dev; 307 periph->periph_switch = &sd_switch; 308 309 /* 310 * Increase our openings to the maximum-per-periph 311 * supported by the adapter. This will either be 312 * clamped down or grown by the adapter if necessary. 313 */ 314 periph->periph_openings = 315 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 316 periph->periph_flags |= PERIPH_GROW_OPENINGS; 317 318 /* 319 * Use the subdriver to request information regarding the drive. 320 */ 321 aprint_naive("\n"); 322 aprint_normal("\n"); 323 324 if (periph->periph_quirks & PQUIRK_START) 325 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 326 327 error = scsipi_test_unit_ready(periph, 328 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 329 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 330 if (error) 331 result = SDGP_RESULT_OFFLINE; 332 else 333 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 334 335 aprint_normal_dev(dksc->sc_dev, ""); 336 switch (result) { 337 case SDGP_RESULT_OK: 338 format_bytes(pbuf, sizeof(pbuf), 339 (u_int64_t)dp->disksize * dp->blksize); 340 aprint_normal("%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect" 341 " x %llu sectors", 342 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 343 (unsigned long long)dp->disksize); 344 break; 345 346 case SDGP_RESULT_OFFLINE: 347 aprint_normal("drive offline"); 348 break; 349 350 case SDGP_RESULT_UNFORMATTED: 351 aprint_normal("unformatted media"); 352 break; 353 354 #ifdef DIAGNOSTIC 355 default: 356 panic("sdattach: unknown result from get_parms"); 357 break; 358 #endif 359 } 360 aprint_normal("\n"); 361 362 /* Discover wedges on this disk if it is online */ 363 if (result == SDGP_RESULT_OK) 364 dkwedge_discover(&dksc->sc_dkdev); 365 366 /* 367 * Establish a shutdown hook so that we can ensure that 368 * our data has actually made it onto the platter at 369 * shutdown time. Note that this relies on the fact 370 * that the shutdown hooks at the "leaves" of the device tree 371 * are run, first (thus guaranteeing that our hook runs before 372 * our ancestors'). 373 */ 374 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 375 aprint_error_dev(self, "couldn't establish power handler\n"); 376 } 377 378 static int 379 sddetach(device_t self, int flags) 380 { 381 struct sd_softc *sd = device_private(self); 382 struct dk_softc *dksc = &sd->sc_dksc; 383 struct scsipi_periph *periph = sd->sc_periph; 384 struct scsipi_channel *chan = periph->periph_channel; 385 int bmaj, cmaj, i, mn, rc; 386 387 rc = disk_begindetach(&dksc->sc_dkdev, sd_lastclose, self, flags); 388 if (rc) 389 return rc; 390 391 /* locate the major number */ 392 bmaj = bdevsw_lookup_major(&sd_bdevsw); 393 cmaj = cdevsw_lookup_major(&sd_cdevsw); 394 395 /* Nuke the vnodes for any open instances */ 396 for (i = 0; i < MAXPARTITIONS; i++) { 397 mn = SDMINOR(device_unit(self), i); 398 vdevgone(bmaj, mn, mn, VBLK); 399 vdevgone(cmaj, mn, mn, VCHR); 400 } 401 402 /* kill any pending restart */ 403 callout_halt(&sd->sc_callout, NULL); 404 405 dk_drain(dksc); 406 407 /* Kill off any pending commands. */ 408 mutex_enter(chan_mtx(chan)); 409 scsipi_kill_pending(periph); 410 mutex_exit(chan_mtx(chan)); 411 412 bufq_free(dksc->sc_bufq); 413 414 /* Delete all of our wedges. */ 415 dkwedge_delall(&dksc->sc_dkdev); 416 417 /* Detach from the disk list. */ 418 disk_detach(&dksc->sc_dkdev); 419 disk_destroy(&dksc->sc_dkdev); 420 421 dk_detach(dksc); 422 423 callout_destroy(&sd->sc_callout); 424 425 pmf_device_deregister(self); 426 427 return (0); 428 } 429 430 /* 431 * Serialized by caller 432 */ 433 static int 434 sd_firstopen(device_t self, dev_t dev, int flag, int fmt) 435 { 436 struct sd_softc *sd = device_private(self); 437 struct scsipi_periph *periph = sd->sc_periph; 438 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 439 int error, silent; 440 int part, removable; 441 442 part = SDPART(dev); 443 444 error = scsipi_adapter_addref(adapt); 445 if (error) 446 return error; 447 448 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 449 silent = XS_CTL_SILENT; 450 else 451 silent = 0; 452 453 /* Check that it is still responding and ok. */ 454 error = scsipi_test_unit_ready(periph, 455 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 456 silent); 457 458 /* 459 * Start the pack spinning if necessary. Always allow the 460 * raw partition to be opened, for raw IOCTLs. Data transfers 461 * will check for SDEV_MEDIA_LOADED. 462 */ 463 if (error == EIO) { 464 error = scsipi_start(periph, SSS_START, silent); 465 if (error == EINVAL) 466 error = EIO; 467 } 468 if (error) 469 goto bad; 470 471 removable = (periph->periph_flags & PERIPH_REMOVABLE) != 0; 472 if (removable) { 473 /* Lock the pack in. */ 474 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 475 XS_CTL_IGNORE_ILLEGAL_REQUEST | 476 XS_CTL_IGNORE_MEDIA_CHANGE | 477 XS_CTL_SILENT); 478 if (error) 479 goto bad; 480 } 481 482 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 483 int param_error; 484 485 /* 486 * Load the physical device parameters. 487 * 488 * Note that if media is present but unformatted, 489 * we allow the open (so that it can be formatted!). 490 * The drive should refuse real I/O, if the media is 491 * unformatted. 492 */ 493 param_error = sd_get_parms(sd, &sd->params, 0); 494 if (param_error == SDGP_RESULT_OFFLINE) { 495 error = ENXIO; 496 goto bad2; 497 } 498 periph->periph_flags |= PERIPH_MEDIA_LOADED; 499 500 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 501 } 502 503 periph->periph_flags |= PERIPH_OPEN; 504 return 0; 505 506 bad2: 507 if (removable) 508 scsipi_prevent(periph, SPAMR_ALLOW, 509 XS_CTL_IGNORE_ILLEGAL_REQUEST | 510 XS_CTL_IGNORE_MEDIA_CHANGE | 511 XS_CTL_SILENT); 512 513 bad: 514 scsipi_adapter_delref(adapt); 515 return error; 516 } 517 518 /* 519 * open the device. Make sure the partition info is a up-to-date as can be. 520 */ 521 static int 522 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 523 { 524 struct sd_softc *sd; 525 struct dk_softc *dksc; 526 struct scsipi_periph *periph; 527 int unit, part; 528 int error; 529 530 unit = SDUNIT(dev); 531 sd = device_lookup_private(&sd_cd, unit); 532 if (sd == NULL) 533 return (ENXIO); 534 dksc = &sd->sc_dksc; 535 536 if (!device_is_active(dksc->sc_dev)) 537 return (ENODEV); 538 539 periph = sd->sc_periph; 540 part = SDPART(dev); 541 542 SC_DEBUG(periph, SCSIPI_DB1, 543 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", 544 dev, unit, sd_cd.cd_ndevs, SDPART(dev))); 545 546 /* 547 * If any partition is open, but the disk has been invalidated, 548 * disallow further opens of non-raw partition 549 */ 550 if ((periph->periph_flags & (PERIPH_OPEN | PERIPH_MEDIA_LOADED)) == 551 PERIPH_OPEN) { 552 if (part != RAW_PART || fmt != S_IFCHR) 553 return EIO; 554 } 555 556 error = dk_open(dksc, dev, flag, fmt, l); 557 558 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 559 560 return error; 561 } 562 563 /* 564 * Serialized by caller 565 */ 566 static int 567 sd_lastclose(device_t self) 568 { 569 struct sd_softc *sd = device_private(self); 570 struct dk_softc *dksc = &sd->sc_dksc; 571 struct scsipi_periph *periph = sd->sc_periph; 572 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 573 574 /* 575 * If the disk cache needs flushing, and the disk supports 576 * it, do it now. 577 */ 578 if ((sd->flags & SDF_DIRTY) != 0) { 579 if (sd_flush(sd, 0)) { 580 aprint_error_dev(dksc->sc_dev, 581 "cache synchronization failed\n"); 582 sd->flags &= ~SDF_FLUSHING; 583 } else 584 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 585 } 586 587 scsipi_wait_drain(periph); 588 589 if (periph->periph_flags & PERIPH_REMOVABLE) 590 scsipi_prevent(periph, SPAMR_ALLOW, 591 XS_CTL_IGNORE_ILLEGAL_REQUEST | 592 XS_CTL_IGNORE_NOT_READY | 593 XS_CTL_SILENT); 594 periph->periph_flags &= ~PERIPH_OPEN; 595 596 scsipi_wait_drain(periph); 597 598 scsipi_adapter_delref(adapt); 599 600 return 0; 601 } 602 603 /* 604 * close the device.. only called if we are the LAST occurrence of an open 605 * device. Convenient now but usually a pain. 606 */ 607 static int 608 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 609 { 610 struct sd_softc *sd; 611 struct dk_softc *dksc; 612 int unit; 613 614 unit = SDUNIT(dev); 615 sd = device_lookup_private(&sd_cd, unit); 616 dksc = &sd->sc_dksc; 617 618 return dk_close(dksc, dev, flag, fmt, l); 619 } 620 621 /* 622 * Actually translate the requested transfer into one the physical driver 623 * can understand. The transfer is described by a buf and will include 624 * only one physical transfer. 625 */ 626 static void 627 sdstrategy(struct buf *bp) 628 { 629 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 630 struct dk_softc *dksc = &sd->sc_dksc; 631 struct scsipi_periph *periph = sd->sc_periph; 632 633 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 634 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 635 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 636 637 /* 638 * If the device has been made invalid, error out 639 */ 640 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 641 !device_is_active(dksc->sc_dev)) { 642 if (periph->periph_flags & PERIPH_OPEN) 643 bp->b_error = EIO; 644 else 645 bp->b_error = ENODEV; 646 647 bp->b_resid = bp->b_bcount; 648 biodone(bp); 649 return; 650 } 651 652 dk_strategy(dksc, bp); 653 } 654 655 /* 656 * Issue single I/O command 657 * 658 * Called from dk_start and implicitly from dk_strategy 659 */ 660 static int 661 sd_diskstart(device_t dev, struct buf *bp) 662 { 663 struct sd_softc *sd = device_private(dev); 664 struct scsipi_periph *periph = sd->sc_periph; 665 struct scsipi_channel *chan = periph->periph_channel; 666 struct scsipi_rw_16 cmd16; 667 struct scsipi_rw_10 cmd_big; 668 struct scsi_rw_6 cmd_small; 669 struct scsipi_generic *cmdp; 670 struct scsipi_xfer *xs; 671 int error, flags, nblks, cmdlen; 672 int cdb_flags; 673 bool havefua = !(periph->periph_quirks & PQUIRK_NOFUA); 674 675 mutex_enter(chan_mtx(chan)); 676 677 if (periph->periph_active >= periph->periph_openings) { 678 error = EAGAIN; 679 goto out; 680 } 681 682 /* 683 * there is excess capacity, but a special waits 684 * It'll need the adapter as soon as we clear out of the 685 * way and let it run (user level wait). 686 */ 687 if (periph->periph_flags & PERIPH_WAITING) { 688 periph->periph_flags &= ~PERIPH_WAITING; 689 cv_broadcast(periph_cv_periph(periph)); 690 error = EAGAIN; 691 goto out; 692 } 693 694 /* 695 * If the device has become invalid, abort all the 696 * reads and writes until all files have been closed and 697 * re-opened. 698 */ 699 if (__predict_false( 700 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 701 error = EIO; 702 goto out; 703 } 704 705 /* 706 * Mark the disk dirty so that the cache will be 707 * flushed on close. 708 */ 709 if ((bp->b_flags & B_READ) == 0) 710 sd->flags |= SDF_DIRTY; 711 712 if (sd->params.blksize == DEV_BSIZE) 713 nblks = bp->b_bcount >> DEV_BSHIFT; 714 else 715 nblks = howmany(bp->b_bcount, sd->params.blksize); 716 717 /* 718 * Pass FUA and/or DPO if requested. Must be done before CDB 719 * selection, as 6-byte CDB doesn't support the flags. 720 */ 721 cdb_flags = 0; 722 if (havefua) { 723 if (bp->b_flags & B_MEDIA_FUA) 724 cdb_flags |= SRWB_FUA; 725 726 if (bp->b_flags & B_MEDIA_DPO) 727 cdb_flags |= SRWB_DPO; 728 } 729 730 /* 731 * Fill out the scsi command. Use the smallest CDB possible 732 * (6-byte, 10-byte, or 16-byte). If we need FUA or DPO, 733 * need to use 10-byte or bigger, as the 6-byte doesn't support 734 * the flags. 735 */ 736 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 737 ((nblks & 0xff) == nblks) && 738 !(periph->periph_quirks & PQUIRK_ONLYBIG) && 739 !cdb_flags) { 740 /* 6-byte CDB */ 741 memset(&cmd_small, 0, sizeof(cmd_small)); 742 cmd_small.opcode = (bp->b_flags & B_READ) ? 743 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 744 _lto3b(bp->b_rawblkno, cmd_small.addr); 745 cmd_small.length = nblks & 0xff; 746 cmdlen = sizeof(cmd_small); 747 cmdp = (struct scsipi_generic *)&cmd_small; 748 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 749 /* 10-byte CDB */ 750 memset(&cmd_big, 0, sizeof(cmd_big)); 751 cmd_big.opcode = (bp->b_flags & B_READ) ? 752 READ_10 : WRITE_10; 753 _lto4b(bp->b_rawblkno, cmd_big.addr); 754 _lto2b(nblks, cmd_big.length); 755 cmdlen = sizeof(cmd_big); 756 cmdp = (struct scsipi_generic *)&cmd_big; 757 } else { 758 /* 16-byte CDB */ 759 memset(&cmd16, 0, sizeof(cmd16)); 760 cmd16.opcode = (bp->b_flags & B_READ) ? 761 READ_16 : WRITE_16; 762 _lto8b(bp->b_rawblkno, cmd16.addr); 763 _lto4b(nblks, cmd16.length); 764 cmdlen = sizeof(cmd16); 765 cmdp = (struct scsipi_generic *)&cmd16; 766 } 767 768 if (cdb_flags) 769 cmdp->bytes[0] = cdb_flags; 770 771 /* 772 * Figure out what flags to use. 773 */ 774 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 775 if (bp->b_flags & B_READ) 776 flags |= XS_CTL_DATA_IN; 777 else 778 flags |= XS_CTL_DATA_OUT; 779 780 /* 781 * Call the routine that chats with the adapter. 782 * Note: we cannot sleep as we may be an interrupt 783 */ 784 xs = scsipi_make_xs_locked(periph, cmdp, cmdlen, 785 (u_char *)bp->b_data, bp->b_bcount, 786 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 787 if (__predict_false(xs == NULL)) { 788 /* 789 * out of memory. Keep this buffer in the queue, and 790 * retry later. 791 */ 792 callout_reset(&sd->sc_callout, hz / 2, sdrestart, sd); 793 error = EAGAIN; 794 goto out; 795 } 796 797 error = scsipi_execute_xs(xs); 798 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 799 KASSERT(error == 0); 800 801 out: 802 mutex_exit(chan_mtx(chan)); 803 804 return error; 805 } 806 807 /* 808 * Recover I/O request after memory shortage 809 * 810 * Called from callout 811 */ 812 static void 813 sdrestart(void *v) 814 { 815 struct sd_softc *sd = v; 816 struct dk_softc *dksc = &sd->sc_dksc; 817 818 dk_start(dksc, NULL); 819 } 820 821 /* 822 * Recover I/O request after memory shortage 823 * 824 * Called from scsipi midlayer when resources have been freed 825 * with channel lock held 826 */ 827 static void 828 sdstart(struct scsipi_periph *periph) 829 { 830 struct sd_softc *sd = device_private(periph->periph_dev); 831 struct dk_softc *dksc = &sd->sc_dksc; 832 struct scsipi_channel *chan = periph->periph_channel; 833 834 /* 835 * release channel lock as dk_start may need to acquire 836 * other locks 837 * 838 * sdstart is called from scsipi_put_xs and all its callers 839 * release the lock afterwards. So releasing it here 840 * doesn't matter. 841 */ 842 mutex_exit(chan_mtx(chan)); 843 844 dk_start(dksc, NULL); 845 846 mutex_enter(chan_mtx(chan)); 847 } 848 849 static void 850 sddone(struct scsipi_xfer *xs, int error) 851 { 852 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 853 struct dk_softc *dksc = &sd->sc_dksc; 854 struct buf *bp = xs->bp; 855 856 if (sd->flags & SDF_FLUSHING) { 857 /* Flush completed, no longer dirty. */ 858 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 859 } 860 861 if (bp) { 862 bp->b_error = error; 863 bp->b_resid = xs->resid; 864 if (error) { 865 /* on a read/write error bp->b_resid is zero, so fix */ 866 bp->b_resid = bp->b_bcount; 867 } 868 869 dk_done(dksc, bp); 870 /* dk_start is called from scsipi_complete */ 871 } 872 } 873 874 static void 875 sdminphys(struct buf *bp) 876 { 877 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 878 struct dk_softc *dksc = &sd->sc_dksc; 879 long xmax; 880 881 /* 882 * If the device is ancient, we want to make sure that 883 * the transfer fits into a 6-byte cdb. 884 * 885 * XXX Note that the SCSI-I spec says that 256-block transfers 886 * are allowed in a 6-byte read/write, and are specified 887 * by setting the "length" to 0. However, we're conservative 888 * here, allowing only 255-block transfers in case an 889 * ancient device gets confused by length == 0. A length of 0 890 * in a 10-byte read/write actually means 0 blocks. 891 */ 892 if ((sd->flags & SDF_ANCIENT) && 893 ((sd->sc_periph->periph_flags & 894 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 895 xmax = dksc->sc_dkdev.dk_geom.dg_secsize * 0xff; 896 897 if (bp->b_bcount > xmax) 898 bp->b_bcount = xmax; 899 } 900 901 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 902 } 903 904 static void 905 sd_iosize(device_t dev, int *count) 906 { 907 struct buf B; 908 int bmaj; 909 910 bmaj = bdevsw_lookup_major(&sd_bdevsw); 911 B.b_dev = MAKESDDEV(bmaj,device_unit(dev),RAW_PART); 912 B.b_bcount = *count; 913 914 sdminphys(&B); 915 916 *count = B.b_bcount; 917 } 918 919 static int 920 sdread(dev_t dev, struct uio *uio, int ioflag) 921 { 922 923 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 924 } 925 926 static int 927 sdwrite(dev_t dev, struct uio *uio, int ioflag) 928 { 929 930 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 931 } 932 933 /* 934 * Perform special action on behalf of the user 935 * Knows about the internals of this device 936 */ 937 static int 938 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 939 { 940 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 941 struct dk_softc *dksc = &sd->sc_dksc; 942 struct scsipi_periph *periph = sd->sc_periph; 943 944 int part = SDPART(dev); 945 int error; 946 947 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 948 949 /* 950 * If the device is not valid, some IOCTLs can still be 951 * handled on the raw partition. Check this here. 952 */ 953 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 954 part != RAW_PART) 955 return (EIO); 956 957 switch (cmd) { 958 case DIOCLOCK: 959 if (periph->periph_flags & PERIPH_REMOVABLE) 960 return (scsipi_prevent(periph, 961 (*(int *)addr) ? 962 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 963 else 964 return (ENOTTY); 965 966 case DIOCEJECT: 967 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 968 return (ENOTTY); 969 if (*(int *)addr == 0) { 970 int pmask = __BIT(part); 971 /* 972 * Don't force eject: check that we are the only 973 * partition open. If so, unlock it. 974 */ 975 if (DK_BUSY(dksc, pmask) == 0) { 976 error = scsipi_prevent(periph, SPAMR_ALLOW, 977 XS_CTL_IGNORE_NOT_READY); 978 if (error) 979 return (error); 980 } else { 981 return (EBUSY); 982 } 983 } 984 /* FALLTHROUGH */ 985 case ODIOCEJECT: 986 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 987 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 988 989 case DIOCGCACHE: 990 return (sd_getcache(sd, (int *) addr)); 991 992 case DIOCSCACHE: 993 if ((flag & FWRITE) == 0) 994 return (EBADF); 995 return (sd_setcache(sd, *(int *) addr)); 996 997 case DIOCCACHESYNC: 998 /* 999 * XXX Do we really need to care about having a writable 1000 * file descriptor here? 1001 */ 1002 if ((flag & FWRITE) == 0) 1003 return (EBADF); 1004 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1005 error = sd_flush(sd, 0); 1006 if (error) { 1007 sd->flags &= ~SDF_FLUSHING; 1008 return (error); 1009 } 1010 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1011 } 1012 return (0); 1013 1014 case DIOCGSECTORALIGN: { 1015 struct disk_sectoralign *dsa = addr; 1016 1017 dsa->dsa_alignment = 1u << sd->params.lbppbe; 1018 dsa->dsa_firstaligned = sd->params.lalba; 1019 if (part != RAW_PART) { 1020 struct disklabel *lp = dksc->sc_dkdev.dk_label; 1021 daddr_t offset = lp->d_partitions[part].p_offset; 1022 uint32_t r = offset % dsa->dsa_alignment; 1023 1024 if (r < dsa->dsa_firstaligned) 1025 dsa->dsa_firstaligned = dsa->dsa_firstaligned 1026 - r; 1027 else 1028 dsa->dsa_firstaligned = (dsa->dsa_firstaligned 1029 + dsa->dsa_alignment) - r; 1030 } 1031 dsa->dsa_firstaligned %= dsa->dsa_alignment; 1032 1033 return 0; 1034 } 1035 1036 default: 1037 error = dk_ioctl(dksc, dev, cmd, addr, flag, l); 1038 if (error == ENOTTY) { 1039 error = scsipi_do_ioctl(periph, dev, cmd, addr, flag, 1040 l); 1041 } 1042 return (error); 1043 } 1044 1045 #ifdef DIAGNOSTIC 1046 panic("sdioctl: impossible"); 1047 #endif 1048 } 1049 1050 static void 1051 sd_label(device_t self, struct disklabel *lp) 1052 { 1053 struct sd_softc *sd = device_private(self); 1054 1055 strncpy(lp->d_typename, sd->name, 16); 1056 lp->d_rpm = sd->params.rot_rate; 1057 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) 1058 lp->d_flags |= D_REMOVABLE; 1059 } 1060 1061 static int 1062 sd_unmap(struct sd_softc *sd, off_t pos, off_t len) 1063 { 1064 struct scsi_unmap_10 cmd; 1065 struct scsi_unmap_10_data data; 1066 int flags = 0; 1067 uint64_t bno; 1068 uint32_t size; 1069 1070 /* round the start up and the end down */ 1071 bno = (pos + sd->params.blksize - 1) / sd->params.blksize; 1072 size = ((pos + len) / sd->params.blksize) - bno; 1073 1074 if (size == 0) 1075 return 0; 1076 1077 memset(&data, 0, sizeof(data)); 1078 _lto2b(sizeof(data) - 2, data.unmap_data_length); 1079 _lto2b(sizeof(data) - 8, data.unmap_block_descriptor_data_length); 1080 _lto8b(bno, data.unmap_block_descriptor[0].addr); 1081 _lto4b(size, data.unmap_block_descriptor[0].len); 1082 1083 memset(&cmd, 0, sizeof(cmd)); 1084 cmd.opcode = UNMAP_10; 1085 cmd.byte2 = 0; 1086 _lto2b(sizeof(data), cmd.length); 1087 1088 scsipi_command(sd->sc_periph, 1089 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1090 SDRETRIES, 2000000, NULL, 1091 flags | XS_CTL_DATA_OUT); 1092 1093 return 0; 1094 } 1095 1096 static int 1097 sd_discard(device_t self, off_t pos, off_t len) 1098 { 1099 struct sd_softc *sd = device_private(self); 1100 if (sd->flags & SDF_LBPU) { 1101 return sd_unmap(sd, pos, len); 1102 } 1103 return ENODEV; 1104 } 1105 1106 static bool 1107 sd_shutdown(device_t self, int how) 1108 { 1109 struct sd_softc *sd = device_private(self); 1110 struct dk_softc *dksc = &sd->sc_dksc; 1111 1112 /* 1113 * If the disk cache needs to be flushed, and the disk supports 1114 * it, flush it. We're cold at this point, so we poll for 1115 * completion. 1116 */ 1117 if ((sd->flags & SDF_DIRTY) != 0) { 1118 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1119 aprint_error_dev(dksc->sc_dev, 1120 "cache synchronization failed\n"); 1121 sd->flags &= ~SDF_FLUSHING; 1122 } else 1123 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1124 } 1125 return true; 1126 } 1127 1128 static bool 1129 sd_suspend(device_t dv, const pmf_qual_t *qual) 1130 { 1131 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1132 } 1133 1134 /* 1135 * Check Errors 1136 */ 1137 static int 1138 sd_interpret_sense(struct scsipi_xfer *xs) 1139 { 1140 struct scsipi_periph *periph = xs->xs_periph; 1141 struct scsipi_channel *chan = periph->periph_channel; 1142 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1143 struct sd_softc *sd = device_private(periph->periph_dev); 1144 struct dk_softc *dksc = &sd->sc_dksc; 1145 int error, retval = EJUSTRETURN; 1146 1147 /* 1148 * If the periph is already recovering, just do the normal 1149 * error processing. 1150 */ 1151 if (periph->periph_flags & PERIPH_RECOVERING) 1152 return (retval); 1153 1154 /* 1155 * Ignore errors from accessing illegal fields (e.g. trying to 1156 * lock the door of a digicam, which doesn't have a door that 1157 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1158 */ 1159 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1160 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1161 sense->asc == 0x24 && 1162 sense->ascq == 0x00) { /* Illegal field in CDB */ 1163 if (!(xs->xs_control & XS_CTL_SILENT)) { 1164 scsipi_printaddr(periph); 1165 printf("no door lock\n"); 1166 } 1167 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1168 return (retval); 1169 } 1170 1171 /* 1172 * If it isn't a extended or extended/deferred error, let 1173 * the generic code handle it. 1174 */ 1175 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1176 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1177 return (retval); 1178 1179 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1180 sense->asc == 0x4) { 1181 if (sense->ascq == 0x01) { 1182 /* 1183 * Unit In The Process Of Becoming Ready. 1184 */ 1185 printf("%s: waiting for pack to spin up...\n", 1186 dksc->sc_xname); 1187 if (!callout_pending(&periph->periph_callout)) 1188 scsipi_periph_freeze(periph, 1); 1189 callout_reset(&periph->periph_callout, 1190 5 * hz, scsipi_periph_timed_thaw, periph); 1191 retval = ERESTART; 1192 } else if (sense->ascq == 0x02) { 1193 printf("%s: pack is stopped, restarting...\n", 1194 dksc->sc_xname); 1195 mutex_enter(chan_mtx(chan)); 1196 periph->periph_flags |= PERIPH_RECOVERING; 1197 mutex_exit(chan_mtx(chan)); 1198 error = scsipi_start(periph, SSS_START, 1199 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1200 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1201 if (error) { 1202 aprint_error_dev(dksc->sc_dev, 1203 "unable to restart pack\n"); 1204 retval = error; 1205 } else 1206 retval = ERESTART; 1207 mutex_enter(chan_mtx(chan)); 1208 periph->periph_flags &= ~PERIPH_RECOVERING; 1209 mutex_exit(chan_mtx(chan)); 1210 } 1211 } 1212 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1213 sense->asc == 0x31 && 1214 sense->ascq == 0x00) { /* maybe for any asq ? */ 1215 /* Medium Format Corrupted */ 1216 retval = EFTYPE; 1217 } 1218 return (retval); 1219 } 1220 1221 1222 static int 1223 sdsize(dev_t dev) 1224 { 1225 struct sd_softc *sd; 1226 struct dk_softc *dksc; 1227 int unit; 1228 1229 unit = SDUNIT(dev); 1230 sd = device_lookup_private(&sd_cd, unit); 1231 if (sd == NULL) 1232 return (-1); 1233 dksc = &sd->sc_dksc; 1234 1235 if (!device_is_active(dksc->sc_dev)) 1236 return (-1); 1237 1238 return dk_size(dksc, dev); 1239 } 1240 1241 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1242 static struct scsipi_xfer sx; 1243 1244 /* 1245 * dump all of physical memory into the partition specified, starting 1246 * at offset 'dumplo' into the partition. 1247 */ 1248 static int 1249 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1250 { 1251 struct sd_softc *sd; 1252 struct dk_softc *dksc; 1253 struct scsipi_periph *periph; 1254 int unit; 1255 1256 unit = SDUNIT(dev); 1257 if ((sd = device_lookup_private(&sd_cd, unit)) == NULL) 1258 return (ENXIO); 1259 dksc = &sd->sc_dksc; 1260 1261 if (!device_is_active(dksc->sc_dev)) 1262 return (ENODEV); 1263 1264 periph = sd->sc_periph; 1265 1266 /* Make sure it was initialized. */ 1267 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1268 return (ENXIO); 1269 1270 return dk_dump(dksc, dev, blkno, va, size, 0); 1271 } 1272 1273 static int 1274 sd_dumpblocks(device_t dev, void *va, daddr_t blkno, int nblk) 1275 { 1276 struct sd_softc *sd = device_private(dev); 1277 struct dk_softc *dksc = &sd->sc_dksc; 1278 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 1279 struct scsipi_rw_10 cmd; /* write command */ 1280 struct scsipi_xfer *xs; /* ... convenience */ 1281 struct scsipi_periph *periph; 1282 struct scsipi_channel *chan; 1283 size_t sectorsize; 1284 1285 periph = sd->sc_periph; 1286 chan = periph->periph_channel; 1287 1288 sectorsize = dg->dg_secsize; 1289 1290 xs = &sx; 1291 1292 #ifndef SD_DUMP_NOT_TRUSTED 1293 /* 1294 * Fill out the scsi command 1295 */ 1296 memset(&cmd, 0, sizeof(cmd)); 1297 cmd.opcode = WRITE_10; 1298 _lto4b(blkno, cmd.addr); 1299 _lto2b(nblk, cmd.length); 1300 /* 1301 * Fill out the scsipi_xfer structure 1302 * Note: we cannot sleep as we may be an interrupt 1303 * don't use scsipi_command() as it may want to wait 1304 * for an xs. 1305 */ 1306 memset(xs, 0, sizeof(sx)); 1307 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1308 XS_CTL_DATA_OUT; 1309 xs->xs_status = 0; 1310 xs->xs_periph = periph; 1311 xs->xs_retries = SDRETRIES; 1312 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1313 xs->cmd = (struct scsipi_generic *)&cmd; 1314 xs->cmdlen = sizeof(cmd); 1315 xs->resid = nblk * sectorsize; 1316 xs->error = XS_NOERROR; 1317 xs->bp = 0; 1318 xs->data = va; 1319 xs->datalen = nblk * sectorsize; 1320 callout_init(&xs->xs_callout, 0); 1321 1322 /* 1323 * Pass all this info to the scsi driver. 1324 */ 1325 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1326 if ((xs->xs_status & XS_STS_DONE) == 0 || 1327 xs->error != XS_NOERROR) 1328 return (EIO); 1329 #else /* SD_DUMP_NOT_TRUSTED */ 1330 /* Let's just talk about this first... */ 1331 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1332 delay(500 * 1000); /* half a second */ 1333 #endif /* SD_DUMP_NOT_TRUSTED */ 1334 1335 return (0); 1336 } 1337 1338 static int 1339 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1340 int page, int flags, int *big) 1341 { 1342 1343 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1344 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1345 *big = 1; 1346 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1347 size + sizeof(struct scsi_mode_parameter_header_10), 1348 flags, SDRETRIES, 6000); 1349 } else { 1350 *big = 0; 1351 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1352 size + sizeof(struct scsi_mode_parameter_header_6), 1353 flags, SDRETRIES, 6000); 1354 } 1355 } 1356 1357 static int 1358 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1359 int flags, int big) 1360 { 1361 1362 if (big) { 1363 struct scsi_mode_parameter_header_10 *header = sense; 1364 1365 _lto2b(0, header->data_length); 1366 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1367 size + sizeof(struct scsi_mode_parameter_header_10), 1368 flags, SDRETRIES, 6000); 1369 } else { 1370 struct scsi_mode_parameter_header_6 *header = sense; 1371 1372 header->data_length = 0; 1373 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1374 size + sizeof(struct scsi_mode_parameter_header_6), 1375 flags, SDRETRIES, 6000); 1376 } 1377 } 1378 1379 /* 1380 * sd_validate_blksize: 1381 * 1382 * Validate the block size. Print error if periph is specified, 1383 */ 1384 static int 1385 sd_validate_blksize(struct scsipi_periph *periph, int len) 1386 { 1387 1388 if (len >= 256 && powerof2(len) && len <= MAXPHYS) { 1389 return 1; 1390 } 1391 1392 if (periph) { 1393 scsipi_printaddr(periph); 1394 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1395 !powerof2(len) ? 1396 "preposterous" : "unsupported", 1397 len, SD_DEFAULT_BLKSIZE); 1398 } 1399 1400 return 0; 1401 } 1402 1403 /* 1404 * sd_read_capacity: 1405 * 1406 * Find out from the device what its capacity is. 1407 */ 1408 static u_int64_t 1409 sd_read_capacity(struct sd_softc *sd, int *blksize, int flags) 1410 { 1411 struct scsipi_periph *periph = sd->sc_periph; 1412 union { 1413 struct scsipi_read_capacity_10 cmd; 1414 struct scsipi_read_capacity_16 cmd16; 1415 } cmd; 1416 union { 1417 struct scsipi_read_capacity_10_data data; 1418 struct scsipi_read_capacity_16_data data16; 1419 } *datap; 1420 uint64_t rv; 1421 1422 sd->params.lbppbe = 0; 1423 sd->params.lalba = 0; 1424 1425 memset(&cmd, 0, sizeof(cmd)); 1426 cmd.cmd.opcode = READ_CAPACITY_10; 1427 1428 /* 1429 * Don't allocate data buffer on stack; 1430 * The lower driver layer might use the same stack and 1431 * if it uses region which is in the same cacheline, 1432 * cache flush ops against the data buffer won't work properly. 1433 */ 1434 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1435 if (datap == NULL) 1436 return 0; 1437 1438 if (periph->periph_version >= 5) /* SPC-3 */ 1439 goto rc16; 1440 1441 /* 1442 * If the command works, interpret the result as a 4 byte 1443 * number of blocks 1444 */ 1445 rv = 0; 1446 memset(datap, 0, sizeof(datap->data)); 1447 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1448 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1449 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1450 goto out; 1451 1452 if (_4btol(datap->data.addr) != 0xffffffff) { 1453 *blksize = _4btol(datap->data.length); 1454 rv = _4btol(datap->data.addr) + 1; 1455 goto out; 1456 } 1457 1458 /* 1459 * Device is larger than can be reflected by READ CAPACITY (10). 1460 * Try READ CAPACITY (16). 1461 */ 1462 1463 rc16: 1464 memset(&cmd, 0, sizeof(cmd)); 1465 cmd.cmd16.opcode = READ_CAPACITY_16; 1466 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1467 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1468 1469 memset(datap, 0, sizeof(datap->data16)); 1470 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1471 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1472 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1473 goto out; 1474 1475 *blksize = _4btol(datap->data16.length); 1476 rv = _8btol(datap->data16.addr) + 1; 1477 sd->params.lbppbe = datap->data16.byte14 & SRC16D_LBPPB_EXPONENT; 1478 sd->params.lalba = _2btol(datap->data16.lowest_aligned) & SRC16D_LALBA; 1479 if (_2btol(datap->data16.lowest_aligned) & SRC16D_LBPME) { 1480 sd->flags |= SDF_LBPME; 1481 } else { 1482 sd->flags &= ~SDF_LBPME; 1483 } 1484 1485 out: 1486 free(datap, M_TEMP); 1487 return rv; 1488 } 1489 1490 static int 1491 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1492 { 1493 struct { 1494 struct scsi_mode_parameter_header_6 header; 1495 /* no block descriptor */ 1496 u_int8_t pg_code; /* page code (should be 6) */ 1497 u_int8_t pg_length; /* page length (should be 11) */ 1498 u_int8_t wcd; /* bit0: cache disable */ 1499 u_int8_t lbs[2]; /* logical block size */ 1500 u_int8_t size[5]; /* number of log. blocks */ 1501 u_int8_t pp; /* power/performance */ 1502 u_int8_t flags; 1503 u_int8_t resvd; 1504 } scsipi_sense; 1505 u_int64_t blocks; 1506 int error, blksize; 1507 1508 /* 1509 * sd_read_capacity (ie "read capacity") and mode sense page 6 1510 * give the same information. Do both for now, and check 1511 * for consistency. 1512 * XXX probably differs for removable media 1513 */ 1514 dp->blksize = SD_DEFAULT_BLKSIZE; 1515 if ((blocks = sd_read_capacity(sd, &blksize, flags)) == 0) 1516 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1517 1518 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1519 &scsipi_sense.header, sizeof(scsipi_sense), 1520 flags, SDRETRIES, 6000); 1521 1522 if (error != 0) 1523 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1524 1525 dp->blksize = blksize; 1526 if (!sd_validate_blksize(NULL, dp->blksize)) 1527 dp->blksize = _2btol(scsipi_sense.lbs); 1528 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1529 dp->blksize = SD_DEFAULT_BLKSIZE; 1530 1531 /* 1532 * Create a pseudo-geometry. 1533 */ 1534 dp->heads = 64; 1535 dp->sectors = 32; 1536 dp->cyls = blocks / (dp->heads * dp->sectors); 1537 dp->disksize = _5btol(scsipi_sense.size); 1538 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1539 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1540 (unsigned long long)dp->disksize, 1541 (unsigned long long)blocks); 1542 dp->disksize = blocks; 1543 } 1544 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1545 1546 return (SDGP_RESULT_OK); 1547 } 1548 1549 /* 1550 * Get the scsi driver to send a full inquiry to the * device and use the 1551 * results to fill out the disk parameter structure. 1552 */ 1553 static int 1554 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1555 { 1556 u_int64_t blocks; 1557 int error, blksize; 1558 #if 0 1559 int i; 1560 u_int8_t *p; 1561 #endif 1562 1563 dp->disksize = blocks = sd_read_capacity(sd, &blksize, flags); 1564 if (blocks == 0) { 1565 struct scsipi_read_format_capacities cmd; 1566 struct { 1567 struct scsipi_capacity_list_header header; 1568 struct scsipi_capacity_descriptor desc; 1569 } __packed data; 1570 1571 memset(&cmd, 0, sizeof(cmd)); 1572 memset(&data, 0, sizeof(data)); 1573 cmd.opcode = READ_FORMAT_CAPACITIES; 1574 _lto2b(sizeof(data), cmd.length); 1575 1576 error = scsipi_command(sd->sc_periph, 1577 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1578 SDRETRIES, 20000, NULL, 1579 flags | XS_CTL_DATA_IN); 1580 if (error == EFTYPE) { 1581 /* Medium Format Corrupted, handle as not formatted */ 1582 return (SDGP_RESULT_UNFORMATTED); 1583 } 1584 if (error || data.header.length == 0) 1585 return (SDGP_RESULT_OFFLINE); 1586 1587 #if 0 1588 printf("rfc: length=%d\n", data.header.length); 1589 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"); 1590 #endif 1591 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1592 case SCSIPI_CAP_DESC_CODE_RESERVED: 1593 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1594 break; 1595 1596 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1597 return (SDGP_RESULT_UNFORMATTED); 1598 1599 case SCSIPI_CAP_DESC_CODE_NONE: 1600 return (SDGP_RESULT_OFFLINE); 1601 } 1602 1603 dp->disksize = blocks = _4btol(data.desc.nblks); 1604 if (blocks == 0) 1605 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1606 1607 blksize = _3btol(data.desc.blklen); 1608 1609 } else if (!sd_validate_blksize(NULL, blksize)) { 1610 struct sd_mode_sense_data scsipi_sense; 1611 int big, bsize; 1612 struct scsi_general_block_descriptor *bdesc; 1613 1614 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1615 error = sd_mode_sense(sd, 0, &scsipi_sense, 1616 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, 1617 &big); 1618 if (error) 1619 goto next; 1620 if (big) { 1621 bdesc = (void *)(&scsipi_sense.header.big + 1); 1622 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1623 } else { 1624 bdesc = (void *)(&scsipi_sense.header.small + 1); 1625 bsize = scsipi_sense.header.small.blk_desc_len; 1626 } 1627 1628 #if 0 1629 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1630 printf("page 0 bsize=%d\n", bsize); 1631 printf("page 0 ok\n"); 1632 #endif 1633 1634 if (bsize >= 8) { 1635 blksize = _3btol(bdesc->blklen); 1636 } 1637 } 1638 next: 1639 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1640 blksize = SD_DEFAULT_BLKSIZE; 1641 1642 dp->blksize = blksize; 1643 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1644 1645 if ((sd->flags & SDF_LBPME) == 0) 1646 goto end; 1647 struct scsipi_inquiry cmd; 1648 struct scsi_vpd_logical_block_provisioning vpdbuf; 1649 memset(&cmd, 0, sizeof(cmd)); 1650 cmd.opcode = INQUIRY; 1651 cmd.length = sizeof(vpdbuf); 1652 cmd.byte2 |= SINQ_EVPD; 1653 cmd.pagecode = SINQ_VPD_LOGICAL_PROV; 1654 1655 sd->flags &= ~SDF_LBPU; 1656 if (scsipi_command(sd->sc_periph, (void *)&cmd, sizeof(cmd), 1657 (void *)&vpdbuf, sizeof(vpdbuf), 1658 SDRETRIES, 100000, NULL, 1659 flags | XS_CTL_DATA_IN | XS_CTL_IGNORE_ILLEGAL_REQUEST)) 1660 goto end; 1661 1662 if (vpdbuf.flags & VPD_LBP_LBPU) 1663 sd->flags |= SDF_LBPU; 1664 1665 end: 1666 return (0); 1667 } 1668 1669 static int 1670 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1671 { 1672 struct sd_mode_sense_data scsipi_sense; 1673 int error; 1674 int big, byte2; 1675 size_t poffset; 1676 union scsi_disk_pages *pages; 1677 1678 byte2 = SMS_DBD; 1679 again: 1680 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1681 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1682 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1683 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1684 flags | XS_CTL_SILENT, &big); 1685 if (error) { 1686 if (byte2 == SMS_DBD) { 1687 /* No result; try once more with DBD off */ 1688 byte2 = 0; 1689 goto again; 1690 } 1691 return (error); 1692 } 1693 1694 if (big) { 1695 poffset = sizeof scsipi_sense.header.big; 1696 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1697 } else { 1698 poffset = sizeof scsipi_sense.header.small; 1699 poffset += scsipi_sense.header.small.blk_desc_len; 1700 } 1701 1702 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1703 return ERESTART; 1704 1705 pages = (void *)((u_long)&scsipi_sense + poffset); 1706 #if 0 1707 { 1708 size_t i; 1709 u_int8_t *p; 1710 1711 printf("page 4 sense:"); 1712 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1713 i--, p++) 1714 printf(" %02x", *p); 1715 printf("\n"); 1716 printf("page 4 pg_code=%d sense=%p/%p\n", 1717 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1718 } 1719 #endif 1720 1721 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1722 return (ERESTART); 1723 1724 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1725 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1726 _3btol(pages->rigid_geometry.ncyl), 1727 pages->rigid_geometry.nheads, 1728 _2btol(pages->rigid_geometry.st_cyl_wp), 1729 _2btol(pages->rigid_geometry.st_cyl_rwc), 1730 _2btol(pages->rigid_geometry.land_zone))); 1731 1732 /* 1733 * KLUDGE!! (for zone recorded disks) 1734 * give a number of sectors so that sec * trks * cyls 1735 * is <= disk_size 1736 * can lead to wasted space! THINK ABOUT THIS ! 1737 */ 1738 dp->heads = pages->rigid_geometry.nheads; 1739 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1740 if (dp->heads == 0 || dp->cyls == 0) 1741 return (ERESTART); 1742 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1743 1744 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1745 if (dp->rot_rate == 0) 1746 dp->rot_rate = 3600; 1747 1748 #if 0 1749 printf("page 4 ok\n"); 1750 #endif 1751 return (0); 1752 } 1753 1754 static int 1755 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1756 { 1757 struct sd_mode_sense_data scsipi_sense; 1758 int error; 1759 int big, byte2; 1760 size_t poffset; 1761 union scsi_disk_pages *pages; 1762 1763 byte2 = SMS_DBD; 1764 again: 1765 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1766 error = sd_mode_sense(sd, 0, &scsipi_sense, 1767 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1768 sizeof(scsipi_sense.pages.flex_geometry), 5, 1769 flags | XS_CTL_SILENT, &big); 1770 if (error) { 1771 if (byte2 == SMS_DBD) { 1772 /* No result; try once more with DBD off */ 1773 byte2 = 0; 1774 goto again; 1775 } 1776 return (error); 1777 } 1778 1779 if (big) { 1780 poffset = sizeof scsipi_sense.header.big; 1781 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1782 } else { 1783 poffset = sizeof scsipi_sense.header.small; 1784 poffset += scsipi_sense.header.small.blk_desc_len; 1785 } 1786 1787 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 1788 return ERESTART; 1789 1790 pages = (void *)((u_long)&scsipi_sense + poffset); 1791 #if 0 1792 { 1793 size_t i; 1794 u_int8_t *p; 1795 1796 printf("page 5 sense:"); 1797 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1798 i--, p++) 1799 printf(" %02x", *p); 1800 printf("\n"); 1801 printf("page 5 pg_code=%d sense=%p/%p\n", 1802 pages->flex_geometry.pg_code, &scsipi_sense, pages); 1803 } 1804 #endif 1805 1806 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1807 return (ERESTART); 1808 1809 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1810 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1811 _3btol(pages->flex_geometry.ncyl), 1812 pages->flex_geometry.nheads, 1813 pages->flex_geometry.ph_sec_tr, 1814 _2btol(pages->flex_geometry.bytes_s))); 1815 1816 dp->heads = pages->flex_geometry.nheads; 1817 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1818 dp->sectors = pages->flex_geometry.ph_sec_tr; 1819 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1820 return (ERESTART); 1821 1822 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1823 if (dp->rot_rate == 0) 1824 dp->rot_rate = 3600; 1825 1826 #if 0 1827 printf("page 5 ok\n"); 1828 #endif 1829 return (0); 1830 } 1831 1832 static int 1833 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1834 { 1835 struct dk_softc *dksc = &sd->sc_dksc; 1836 int error; 1837 1838 /* 1839 * If offline, the SDEV_MEDIA_LOADED flag will be 1840 * cleared by the caller if necessary. 1841 */ 1842 if (sd->type == T_SIMPLE_DIRECT) { 1843 error = sd_get_simplifiedparms(sd, dp, flags); 1844 if (!error) 1845 goto setprops; 1846 return (error); 1847 } 1848 1849 error = sd_get_capacity(sd, dp, flags); 1850 if (error) 1851 return (error); 1852 1853 if (sd->type == T_OPTICAL) 1854 goto page0; 1855 1856 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1857 if (!sd_get_parms_page5(sd, dp, flags) || 1858 !sd_get_parms_page4(sd, dp, flags)) 1859 goto setprops; 1860 } else { 1861 if (!sd_get_parms_page4(sd, dp, flags) || 1862 !sd_get_parms_page5(sd, dp, flags)) 1863 goto setprops; 1864 } 1865 1866 page0: 1867 printf("%s: fabricating a geometry\n", dksc->sc_xname); 1868 /* Try calling driver's method for figuring out geometry. */ 1869 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1870 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1871 (sd->sc_periph, dp, dp->disksize)) { 1872 /* 1873 * Use adaptec standard fictitious geometry 1874 * this depends on which controller (e.g. 1542C is 1875 * different. but we have to put SOMETHING here..) 1876 */ 1877 dp->heads = 64; 1878 dp->sectors = 32; 1879 dp->cyls = dp->disksize / (64 * 32); 1880 } 1881 dp->rot_rate = 3600; 1882 1883 setprops: 1884 sd_set_geometry(sd); 1885 1886 return (SDGP_RESULT_OK); 1887 } 1888 1889 static int 1890 sd_flush(struct sd_softc *sd, int flags) 1891 { 1892 struct scsipi_periph *periph = sd->sc_periph; 1893 struct scsi_synchronize_cache_10 cmd; 1894 1895 /* 1896 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1897 * We issue with address 0 length 0, which should be 1898 * interpreted by the device as "all remaining blocks 1899 * starting at address 0". We ignore ILLEGAL REQUEST 1900 * in the event that the command is not supported by 1901 * the device, and poll for completion so that we know 1902 * that the cache has actually been flushed. 1903 * 1904 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1905 * command, as indicated by our quirks flags. 1906 * 1907 * XXX What about older devices? 1908 */ 1909 if (periph->periph_version < 2 || 1910 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1911 return (0); 1912 1913 sd->flags |= SDF_FLUSHING; 1914 memset(&cmd, 0, sizeof(cmd)); 1915 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1916 1917 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1918 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1919 } 1920 1921 static int 1922 sd_getcache(struct sd_softc *sd, int *bitsp) 1923 { 1924 struct scsipi_periph *periph = sd->sc_periph; 1925 struct sd_mode_sense_data scsipi_sense; 1926 int error, bits = 0; 1927 int big; 1928 union scsi_disk_pages *pages; 1929 uint8_t dev_spec; 1930 1931 /* only SCSI-2 and later supported */ 1932 if (periph->periph_version < 2) 1933 return (EOPNOTSUPP); 1934 1935 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1936 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1937 sizeof(scsipi_sense.pages.caching_params), 8, XS_CTL_SILENT, &big); 1938 if (error) 1939 return (error); 1940 1941 if (big) { 1942 pages = (void *)(&scsipi_sense.header.big + 1); 1943 dev_spec = scsipi_sense.header.big.dev_spec; 1944 } else { 1945 pages = (void *)(&scsipi_sense.header.small + 1); 1946 dev_spec = scsipi_sense.header.small.dev_spec; 1947 } 1948 1949 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1950 bits |= DKCACHE_READ; 1951 if (pages->caching_params.flags & CACHING_WCE) 1952 bits |= DKCACHE_WRITE; 1953 if (pages->caching_params.pg_code & PGCODE_PS) 1954 bits |= DKCACHE_SAVE; 1955 1956 /* 1957 * Support for FUA/DPO, defined starting with SCSI-2. Use only 1958 * if device claims to support it, according to the MODE SENSE. 1959 */ 1960 if (!(periph->periph_quirks & PQUIRK_NOFUA) && 1961 ISSET(dev_spec, SMH_DSP_DPOFUA)) 1962 bits |= DKCACHE_FUA | DKCACHE_DPO; 1963 1964 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1965 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1966 sizeof(scsipi_sense.pages.caching_params), 1967 SMS_PCTRL_CHANGEABLE|8, XS_CTL_SILENT, &big); 1968 if (error == 0) { 1969 if (big) 1970 pages = (void *)(&scsipi_sense.header.big + 1); 1971 else 1972 pages = (void *)(&scsipi_sense.header.small + 1); 1973 1974 if (pages->caching_params.flags & CACHING_RCD) 1975 bits |= DKCACHE_RCHANGE; 1976 if (pages->caching_params.flags & CACHING_WCE) 1977 bits |= DKCACHE_WCHANGE; 1978 } 1979 1980 *bitsp = bits; 1981 1982 return (0); 1983 } 1984 1985 static int 1986 sd_setcache(struct sd_softc *sd, int bits) 1987 { 1988 struct scsipi_periph *periph = sd->sc_periph; 1989 struct sd_mode_sense_data scsipi_sense; 1990 int error; 1991 uint8_t oflags, byte2 = 0; 1992 int big; 1993 union scsi_disk_pages *pages; 1994 1995 if (periph->periph_version < 2) 1996 return (EOPNOTSUPP); 1997 1998 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1999 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2000 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2001 if (error) 2002 return (error); 2003 2004 if (big) 2005 pages = (void *)(&scsipi_sense.header.big + 1); 2006 else 2007 pages = (void *)(&scsipi_sense.header.small + 1); 2008 2009 oflags = pages->caching_params.flags; 2010 2011 if (bits & DKCACHE_READ) 2012 pages->caching_params.flags &= ~CACHING_RCD; 2013 else 2014 pages->caching_params.flags |= CACHING_RCD; 2015 2016 if (bits & DKCACHE_WRITE) 2017 pages->caching_params.flags |= CACHING_WCE; 2018 else 2019 pages->caching_params.flags &= ~CACHING_WCE; 2020 2021 if (oflags == pages->caching_params.flags) 2022 return (0); 2023 2024 pages->caching_params.pg_code &= PGCODE_MASK; 2025 2026 if (bits & DKCACHE_SAVE) 2027 byte2 |= SMS_SP; 2028 2029 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2030 sizeof(struct scsi_mode_page_header) + 2031 pages->caching_params.pg_length, 0, big)); 2032 } 2033 2034 static void 2035 sd_set_geometry(struct sd_softc *sd) 2036 { 2037 struct dk_softc *dksc = &sd->sc_dksc; 2038 struct disk_geom *dg = &dksc->sc_dkdev.dk_geom; 2039 2040 memset(dg, 0, sizeof(*dg)); 2041 2042 dg->dg_secperunit = sd->params.disksize; 2043 dg->dg_secsize = sd->params.blksize; 2044 dg->dg_nsectors = sd->params.sectors; 2045 dg->dg_ntracks = sd->params.heads; 2046 dg->dg_ncylinders = sd->params.cyls; 2047 2048 disk_set_info(dksc->sc_dev, &dksc->sc_dkdev, sd->typename); 2049 } 2050 2051 static int 2052 sddiscard(dev_t dev, off_t pos, off_t len) 2053 { 2054 struct sd_softc *sd; 2055 int unit; 2056 2057 unit = SDUNIT(dev); 2058 sd = device_lookup_private(&sd_cd, unit); 2059 2060 return dk_discard(&sd->sc_dksc, dev, pos, len); 2061 } 2062 2063
Indexes created Tue Sep 23 07:09:52 GMT 2025