1 /* $NetBSD: sd.c,v 1.278 2009/04/07 18:35:17 dyoung 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@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@dialix.oz.au) Sept 1992 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.278 2009/04/07 18:35:17 dyoung Exp $"); 51 52 #include "opt_scsi.h" 53 #include "rnd.h" 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/kernel.h> 58 #include <sys/file.h> 59 #include <sys/stat.h> 60 #include <sys/ioctl.h> 61 #include <sys/scsiio.h> 62 #include <sys/buf.h> 63 #include <sys/bufq.h> 64 #include <sys/uio.h> 65 #include <sys/malloc.h> 66 #include <sys/errno.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/proc.h> 71 #include <sys/conf.h> 72 #include <sys/vnode.h> 73 #if NRND > 0 74 #include <sys/rnd.h> 75 #endif 76 77 #include <dev/scsipi/scsi_spc.h> 78 #include <dev/scsipi/scsipi_all.h> 79 #include <dev/scsipi/scsi_all.h> 80 #include <dev/scsipi/scsipi_disk.h> 81 #include <dev/scsipi/scsi_disk.h> 82 #include <dev/scsipi/scsiconf.h> 83 #include <dev/scsipi/scsipi_base.h> 84 #include <dev/scsipi/sdvar.h> 85 86 #include <prop/proplib.h> 87 88 #define SDUNIT(dev) DISKUNIT(dev) 89 #define SDPART(dev) DISKPART(dev) 90 #define SDMINOR(unit, part) DISKMINOR(unit, part) 91 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 92 93 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 94 95 #define SD_DEFAULT_BLKSIZE 512 96 97 static void sdminphys(struct buf *); 98 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 99 static int sdgetdisklabel(struct sd_softc *); 100 static void sdstart(struct scsipi_periph *); 101 static void sdrestart(void *); 102 static void sddone(struct scsipi_xfer *, int); 103 static bool sd_suspend(device_t PMF_FN_PROTO); 104 static void sd_shutdown(void *); 105 static int sd_interpret_sense(struct scsipi_xfer *); 106 107 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 108 int, int *); 109 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int); 111 static int sd_validate_blksize(struct scsipi_periph *, int); 112 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 113 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 114 int); 115 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 117 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 118 int); 119 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 120 int); 121 122 static int sd_flush(struct sd_softc *, int); 123 static int sd_getcache(struct sd_softc *, int *); 124 static int sd_setcache(struct sd_softc *, int); 125 126 static int sdmatch(struct device *, struct cfdata *, void *); 127 static void sdattach(struct device *, struct device *, void *); 128 static int sdactivate(struct device *, enum devact); 129 static int sddetach(struct device *, int); 130 static void sd_set_properties(struct sd_softc *); 131 132 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 133 sdactivate, NULL, NULL, DVF_DETACH_SHUTDOWN); 134 135 extern struct cfdriver sd_cd; 136 137 static const struct scsipi_inquiry_pattern sd_patterns[] = { 138 {T_DIRECT, T_FIXED, 139 "", "", ""}, 140 {T_DIRECT, T_REMOV, 141 "", "", ""}, 142 {T_OPTICAL, T_FIXED, 143 "", "", ""}, 144 {T_OPTICAL, T_REMOV, 145 "", "", ""}, 146 {T_SIMPLE_DIRECT, T_FIXED, 147 "", "", ""}, 148 {T_SIMPLE_DIRECT, T_REMOV, 149 "", "", ""}, 150 }; 151 152 static dev_type_open(sdopen); 153 static dev_type_close(sdclose); 154 static dev_type_read(sdread); 155 static dev_type_write(sdwrite); 156 static dev_type_ioctl(sdioctl); 157 static dev_type_strategy(sdstrategy); 158 static dev_type_dump(sddump); 159 static dev_type_size(sdsize); 160 161 const struct bdevsw sd_bdevsw = { 162 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 163 }; 164 165 const struct cdevsw sd_cdevsw = { 166 sdopen, sdclose, sdread, sdwrite, sdioctl, 167 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 168 }; 169 170 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 171 172 static const struct scsipi_periphsw sd_switch = { 173 sd_interpret_sense, /* check our error handler first */ 174 sdstart, /* have a queue, served by this */ 175 NULL, /* have no async handler */ 176 sddone, /* deal with stats at interrupt time */ 177 }; 178 179 struct sd_mode_sense_data { 180 /* 181 * XXX 182 * We are not going to parse this as-is -- it just has to be large 183 * enough. 184 */ 185 union { 186 struct scsi_mode_parameter_header_6 small; 187 struct scsi_mode_parameter_header_10 big; 188 } header; 189 struct scsi_general_block_descriptor blk_desc; 190 union scsi_disk_pages pages; 191 }; 192 193 /* 194 * The routine called by the low level scsi routine when it discovers 195 * A device suitable for this driver 196 */ 197 static int 198 sdmatch(struct device *parent, struct cfdata *match, 199 void *aux) 200 { 201 struct scsipibus_attach_args *sa = aux; 202 int priority; 203 204 (void)scsipi_inqmatch(&sa->sa_inqbuf, 205 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 206 sizeof(sd_patterns[0]), &priority); 207 208 return (priority); 209 } 210 211 /* 212 * Attach routine common to atapi & scsi. 213 */ 214 static void 215 sdattach(struct device *parent, struct device *self, void *aux) 216 { 217 struct sd_softc *sd = device_private(self); 218 struct scsipibus_attach_args *sa = aux; 219 struct scsipi_periph *periph = sa->sa_periph; 220 int error, result; 221 struct disk_parms *dp = &sd->params; 222 char pbuf[9]; 223 224 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 225 226 sd->sc_dev = self; 227 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 228 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 229 if (sd->type == T_SIMPLE_DIRECT) 230 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 231 232 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 233 periph->periph_version == 0) 234 sd->flags |= SDF_ANCIENT; 235 236 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 237 238 callout_init(&sd->sc_callout, 0); 239 240 /* 241 * Store information needed to contact our base driver 242 */ 243 sd->sc_periph = periph; 244 245 periph->periph_dev = sd->sc_dev; 246 periph->periph_switch = &sd_switch; 247 248 /* 249 * Increase our openings to the maximum-per-periph 250 * supported by the adapter. This will either be 251 * clamped down or grown by the adapter if necessary. 252 */ 253 periph->periph_openings = 254 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 255 periph->periph_flags |= PERIPH_GROW_OPENINGS; 256 257 /* 258 * Initialize and attach the disk structure. 259 */ 260 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 261 disk_attach(&sd->sc_dk); 262 263 /* 264 * Use the subdriver to request information regarding the drive. 265 */ 266 aprint_naive("\n"); 267 aprint_normal("\n"); 268 269 error = scsipi_test_unit_ready(periph, 270 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 271 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 272 273 if (error) 274 result = SDGP_RESULT_OFFLINE; 275 else 276 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 277 aprint_normal_dev(sd->sc_dev, ""); 278 switch (result) { 279 case SDGP_RESULT_OK: 280 format_bytes(pbuf, sizeof(pbuf), 281 (u_int64_t)dp->disksize * dp->blksize); 282 aprint_normal( 283 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 284 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 285 (unsigned long long)dp->disksize); 286 break; 287 288 case SDGP_RESULT_OFFLINE: 289 aprint_normal("drive offline"); 290 break; 291 292 case SDGP_RESULT_UNFORMATTED: 293 aprint_normal("unformatted media"); 294 break; 295 296 #ifdef DIAGNOSTIC 297 default: 298 panic("sdattach: unknown result from get_parms"); 299 break; 300 #endif 301 } 302 aprint_normal("\n"); 303 304 /* 305 * Establish a shutdown hook so that we can ensure that 306 * our data has actually made it onto the platter at 307 * shutdown time. Note that this relies on the fact 308 * that the shutdown hook code puts us at the head of 309 * the list (thus guaranteeing that our hook runs before 310 * our ancestors'). 311 */ 312 if ((sd->sc_sdhook = 313 shutdownhook_establish(sd_shutdown, sd)) == NULL) 314 aprint_error_dev(sd->sc_dev, 315 "WARNING: unable to establish shutdown hook\n"); 316 317 if (!pmf_device_register(self, sd_suspend, NULL)) 318 aprint_error_dev(self, "couldn't establish power handler\n"); 319 320 #if NRND > 0 321 /* 322 * attach the device into the random source list 323 */ 324 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 325 RND_TYPE_DISK, 0); 326 #endif 327 328 /* Discover wedges on this disk. */ 329 dkwedge_discover(&sd->sc_dk); 330 331 sd_set_properties(sd); 332 } 333 334 static int 335 sdactivate(struct device *self, enum devact act) 336 { 337 int rv = 0; 338 339 switch (act) { 340 case DVACT_ACTIVATE: 341 rv = EOPNOTSUPP; 342 break; 343 344 case DVACT_DEACTIVATE: 345 /* 346 * Nothing to do; we key off the device's DVF_ACTIVE. 347 */ 348 break; 349 } 350 return (rv); 351 } 352 353 static int 354 sddetach(struct device *self, int flags) 355 { 356 struct sd_softc *sd = device_private(self); 357 int s, bmaj, cmaj, i, mn; 358 359 /* locate the major number */ 360 bmaj = bdevsw_lookup_major(&sd_bdevsw); 361 cmaj = cdevsw_lookup_major(&sd_cdevsw); 362 363 /* Nuke the vnodes for any open instances */ 364 for (i = 0; i < MAXPARTITIONS; i++) { 365 mn = SDMINOR(device_unit(self), i); 366 vdevgone(bmaj, mn, mn, VBLK); 367 vdevgone(cmaj, mn, mn, VCHR); 368 } 369 370 /* kill any pending restart */ 371 callout_stop(&sd->sc_callout); 372 373 /* Delete all of our wedges. */ 374 dkwedge_delall(&sd->sc_dk); 375 376 s = splbio(); 377 378 /* Kill off any queued buffers. */ 379 bufq_drain(sd->buf_queue); 380 381 bufq_free(sd->buf_queue); 382 383 /* Kill off any pending commands. */ 384 scsipi_kill_pending(sd->sc_periph); 385 386 splx(s); 387 388 /* Detach from the disk list. */ 389 disk_detach(&sd->sc_dk); 390 disk_destroy(&sd->sc_dk); 391 392 callout_destroy(&sd->sc_callout); 393 394 pmf_device_deregister(self); 395 shutdownhook_disestablish(sd->sc_sdhook); 396 397 #if NRND > 0 398 /* Unhook the entropy source. */ 399 rnd_detach_source(&sd->rnd_source); 400 #endif 401 402 return (0); 403 } 404 405 /* 406 * open the device. Make sure the partition info is a up-to-date as can be. 407 */ 408 static int 409 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 410 { 411 struct sd_softc *sd; 412 struct scsipi_periph *periph; 413 struct scsipi_adapter *adapt; 414 int unit, part; 415 int error; 416 417 unit = SDUNIT(dev); 418 sd = device_lookup_private(&sd_cd, unit); 419 if (sd == NULL) 420 return (ENXIO); 421 422 if (!device_is_active(sd->sc_dev)) 423 return (ENODEV); 424 425 part = SDPART(dev); 426 427 mutex_enter(&sd->sc_dk.dk_openlock); 428 429 /* 430 * If there are wedges, and this is not RAW_PART, then we 431 * need to fail. 432 */ 433 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 434 error = EBUSY; 435 goto bad1; 436 } 437 438 periph = sd->sc_periph; 439 adapt = periph->periph_channel->chan_adapter; 440 441 SC_DEBUG(periph, SCSIPI_DB1, 442 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, 443 sd_cd.cd_ndevs, part)); 444 445 /* 446 * If this is the first open of this device, add a reference 447 * to the adapter. 448 */ 449 if (sd->sc_dk.dk_openmask == 0 && 450 (error = scsipi_adapter_addref(adapt)) != 0) 451 goto bad1; 452 453 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 454 /* 455 * If any partition is open, but the disk has been invalidated, 456 * disallow further opens of non-raw partition 457 */ 458 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 459 (part != RAW_PART || fmt != S_IFCHR)) { 460 error = EIO; 461 goto bad2; 462 } 463 } else { 464 int silent; 465 466 if (part == RAW_PART && fmt == S_IFCHR) 467 silent = XS_CTL_SILENT; 468 else 469 silent = 0; 470 471 /* Check that it is still responding and ok. */ 472 error = scsipi_test_unit_ready(periph, 473 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 474 silent); 475 476 /* 477 * Start the pack spinning if necessary. Always allow the 478 * raw parition to be opened, for raw IOCTLs. Data transfers 479 * will check for SDEV_MEDIA_LOADED. 480 */ 481 if (error == EIO) { 482 int error2; 483 484 error2 = scsipi_start(periph, SSS_START, silent); 485 switch (error2) { 486 case 0: 487 error = 0; 488 break; 489 case EIO: 490 case EINVAL: 491 break; 492 default: 493 error = error2; 494 break; 495 } 496 } 497 if (error) { 498 if (silent) 499 goto out; 500 goto bad2; 501 } 502 503 periph->periph_flags |= PERIPH_OPEN; 504 505 if (periph->periph_flags & PERIPH_REMOVABLE) { 506 /* Lock the pack in. */ 507 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 508 XS_CTL_IGNORE_ILLEGAL_REQUEST | 509 XS_CTL_IGNORE_MEDIA_CHANGE | 510 XS_CTL_SILENT); 511 if (error) 512 goto bad3; 513 } 514 515 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 516 int param_error; 517 periph->periph_flags |= PERIPH_MEDIA_LOADED; 518 519 /* 520 * Load the physical device parameters. 521 * 522 * Note that if media is present but unformatted, 523 * we allow the open (so that it can be formatted!). 524 * The drive should refuse real I/O, if the media is 525 * unformatted. 526 */ 527 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 528 == SDGP_RESULT_OFFLINE) { 529 error = ENXIO; 530 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 531 goto bad3; 532 } 533 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 534 535 /* Load the partition info if not already loaded. */ 536 if (param_error == 0) { 537 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 538 error = EIO; 539 goto bad3; 540 } 541 SC_DEBUG(periph, SCSIPI_DB3, 542 ("Disklabel loaded ")); 543 } 544 } 545 } 546 547 /* Check that the partition exists. */ 548 if (part != RAW_PART && 549 (part >= sd->sc_dk.dk_label->d_npartitions || 550 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 551 error = ENXIO; 552 goto bad3; 553 } 554 555 out: /* Insure only one open at a time. */ 556 switch (fmt) { 557 case S_IFCHR: 558 sd->sc_dk.dk_copenmask |= (1 << part); 559 break; 560 case S_IFBLK: 561 sd->sc_dk.dk_bopenmask |= (1 << part); 562 break; 563 } 564 sd->sc_dk.dk_openmask = 565 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 566 567 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 568 mutex_exit(&sd->sc_dk.dk_openlock); 569 return (0); 570 571 bad3: 572 if (sd->sc_dk.dk_openmask == 0) { 573 if (periph->periph_flags & PERIPH_REMOVABLE) 574 scsipi_prevent(periph, SPAMR_ALLOW, 575 XS_CTL_IGNORE_ILLEGAL_REQUEST | 576 XS_CTL_IGNORE_MEDIA_CHANGE | 577 XS_CTL_SILENT); 578 periph->periph_flags &= ~PERIPH_OPEN; 579 } 580 581 bad2: 582 if (sd->sc_dk.dk_openmask == 0) 583 scsipi_adapter_delref(adapt); 584 585 bad1: 586 mutex_exit(&sd->sc_dk.dk_openlock); 587 return (error); 588 } 589 590 /* 591 * close the device.. only called if we are the LAST occurence of an open 592 * device. Convenient now but usually a pain. 593 */ 594 static int 595 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 596 { 597 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 598 struct scsipi_periph *periph = sd->sc_periph; 599 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 600 int part = SDPART(dev); 601 602 mutex_enter(&sd->sc_dk.dk_openlock); 603 switch (fmt) { 604 case S_IFCHR: 605 sd->sc_dk.dk_copenmask &= ~(1 << part); 606 break; 607 case S_IFBLK: 608 sd->sc_dk.dk_bopenmask &= ~(1 << part); 609 break; 610 } 611 sd->sc_dk.dk_openmask = 612 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 613 614 if (sd->sc_dk.dk_openmask == 0) { 615 /* 616 * If the disk cache needs flushing, and the disk supports 617 * it, do it now. 618 */ 619 if ((sd->flags & SDF_DIRTY) != 0) { 620 if (sd_flush(sd, 0)) { 621 aprint_error_dev(sd->sc_dev, 622 "cache synchronization failed\n"); 623 sd->flags &= ~SDF_FLUSHING; 624 } else 625 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 626 } 627 628 scsipi_wait_drain(periph); 629 630 if (periph->periph_flags & PERIPH_REMOVABLE) 631 scsipi_prevent(periph, SPAMR_ALLOW, 632 XS_CTL_IGNORE_ILLEGAL_REQUEST | 633 XS_CTL_IGNORE_NOT_READY | 634 XS_CTL_SILENT); 635 periph->periph_flags &= ~PERIPH_OPEN; 636 637 scsipi_wait_drain(periph); 638 639 scsipi_adapter_delref(adapt); 640 } 641 642 mutex_exit(&sd->sc_dk.dk_openlock); 643 return (0); 644 } 645 646 /* 647 * Actually translate the requested transfer into one the physical driver 648 * can understand. The transfer is described by a buf and will include 649 * only one physical transfer. 650 */ 651 static void 652 sdstrategy(struct buf *bp) 653 { 654 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 655 struct scsipi_periph *periph = sd->sc_periph; 656 struct disklabel *lp; 657 daddr_t blkno; 658 int s; 659 bool sector_aligned; 660 661 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 662 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 663 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 664 /* 665 * If the device has been made invalid, error out 666 */ 667 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 668 !device_is_active(sd->sc_dev)) { 669 if (periph->periph_flags & PERIPH_OPEN) 670 bp->b_error = EIO; 671 else 672 bp->b_error = ENODEV; 673 goto done; 674 } 675 676 lp = sd->sc_dk.dk_label; 677 678 /* 679 * The transfer must be a whole number of blocks, offset must not be 680 * negative. 681 */ 682 if (lp->d_secsize == DEV_BSIZE) { 683 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 684 } else { 685 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 686 } 687 if (!sector_aligned || bp->b_blkno < 0) { 688 bp->b_error = EINVAL; 689 goto done; 690 } 691 /* 692 * If it's a null transfer, return immediatly 693 */ 694 if (bp->b_bcount == 0) 695 goto done; 696 697 /* 698 * Do bounds checking, adjust transfer. if error, process. 699 * If end of partition, just return. 700 */ 701 if (SDPART(bp->b_dev) == RAW_PART) { 702 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 703 sd->params.disksize512) <= 0) 704 goto done; 705 } else { 706 if (bounds_check_with_label(&sd->sc_dk, bp, 707 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 708 goto done; 709 } 710 711 /* 712 * Now convert the block number to absolute and put it in 713 * terms of the device's logical block size. 714 */ 715 if (lp->d_secsize == DEV_BSIZE) 716 blkno = bp->b_blkno; 717 else if (lp->d_secsize > DEV_BSIZE) 718 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 719 else 720 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 721 722 if (SDPART(bp->b_dev) != RAW_PART) 723 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 724 725 bp->b_rawblkno = blkno; 726 727 s = splbio(); 728 729 /* 730 * Place it in the queue of disk activities for this disk. 731 * 732 * XXX Only do disksort() if the current operating mode does not 733 * XXX include tagged queueing. 734 */ 735 bufq_put(sd->buf_queue, bp); 736 737 /* 738 * Tell the device to get going on the transfer if it's 739 * not doing anything, otherwise just wait for completion 740 */ 741 sdstart(sd->sc_periph); 742 743 splx(s); 744 return; 745 746 done: 747 /* 748 * Correctly set the buf to indicate a completed xfer 749 */ 750 bp->b_resid = bp->b_bcount; 751 biodone(bp); 752 } 753 754 /* 755 * sdstart looks to see if there is a buf waiting for the device 756 * and that the device is not already busy. If both are true, 757 * It dequeues the buf and creates a scsi command to perform the 758 * transfer in the buf. The transfer request will call scsipi_done 759 * on completion, which will in turn call this routine again 760 * so that the next queued transfer is performed. 761 * The bufs are queued by the strategy routine (sdstrategy) 762 * 763 * This routine is also called after other non-queued requests 764 * have been made of the scsi driver, to ensure that the queue 765 * continues to be drained. 766 * 767 * must be called at the correct (highish) spl level 768 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 769 */ 770 static void 771 sdstart(struct scsipi_periph *periph) 772 { 773 struct sd_softc *sd = device_private(periph->periph_dev); 774 struct disklabel *lp = sd->sc_dk.dk_label; 775 struct buf *bp = 0; 776 struct scsipi_rw_16 cmd16; 777 struct scsipi_rw_10 cmd_big; 778 struct scsi_rw_6 cmd_small; 779 struct scsipi_generic *cmdp; 780 struct scsipi_xfer *xs; 781 int nblks, cmdlen, error, flags; 782 783 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 784 /* 785 * Check if the device has room for another command 786 */ 787 while (periph->periph_active < periph->periph_openings) { 788 /* 789 * there is excess capacity, but a special waits 790 * It'll need the adapter as soon as we clear out of the 791 * way and let it run (user level wait). 792 */ 793 if (periph->periph_flags & PERIPH_WAITING) { 794 periph->periph_flags &= ~PERIPH_WAITING; 795 wakeup((void *)periph); 796 return; 797 } 798 799 /* 800 * If the device has become invalid, abort all the 801 * reads and writes until all files have been closed and 802 * re-opened 803 */ 804 if (__predict_false( 805 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 806 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 807 bp->b_error = EIO; 808 bp->b_resid = bp->b_bcount; 809 biodone(bp); 810 continue; 811 } else { 812 return; 813 } 814 } 815 816 /* 817 * See if there is a buf with work for us to do.. 818 */ 819 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 820 return; 821 822 /* 823 * We have a buf, now we should make a command. 824 */ 825 826 if (lp->d_secsize == DEV_BSIZE) 827 nblks = bp->b_bcount >> DEV_BSHIFT; 828 else 829 nblks = howmany(bp->b_bcount, lp->d_secsize); 830 831 /* 832 * Fill out the scsi command. Use the smallest CDB possible 833 * (6-byte, 10-byte, or 16-byte). 834 */ 835 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 836 ((nblks & 0xff) == nblks) && 837 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 838 /* 6-byte CDB */ 839 memset(&cmd_small, 0, sizeof(cmd_small)); 840 cmd_small.opcode = (bp->b_flags & B_READ) ? 841 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 842 _lto3b(bp->b_rawblkno, cmd_small.addr); 843 cmd_small.length = nblks & 0xff; 844 cmdlen = sizeof(cmd_small); 845 cmdp = (struct scsipi_generic *)&cmd_small; 846 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 847 /* 10-byte CDB */ 848 memset(&cmd_big, 0, sizeof(cmd_big)); 849 cmd_big.opcode = (bp->b_flags & B_READ) ? 850 READ_10 : WRITE_10; 851 _lto4b(bp->b_rawblkno, cmd_big.addr); 852 _lto2b(nblks, cmd_big.length); 853 cmdlen = sizeof(cmd_big); 854 cmdp = (struct scsipi_generic *)&cmd_big; 855 } else { 856 /* 16-byte CDB */ 857 memset(&cmd16, 0, sizeof(cmd16)); 858 cmd16.opcode = (bp->b_flags & B_READ) ? 859 READ_16 : WRITE_16; 860 _lto8b(bp->b_rawblkno, cmd16.addr); 861 _lto4b(nblks, cmd16.length); 862 cmdlen = sizeof(cmd16); 863 cmdp = (struct scsipi_generic *)&cmd16; 864 } 865 866 /* Instrumentation. */ 867 disk_busy(&sd->sc_dk); 868 869 /* 870 * Mark the disk dirty so that the cache will be 871 * flushed on close. 872 */ 873 if ((bp->b_flags & B_READ) == 0) 874 sd->flags |= SDF_DIRTY; 875 876 /* 877 * Figure out what flags to use. 878 */ 879 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 880 if (bp->b_flags & B_READ) 881 flags |= XS_CTL_DATA_IN; 882 else 883 flags |= XS_CTL_DATA_OUT; 884 885 /* 886 * Call the routine that chats with the adapter. 887 * Note: we cannot sleep as we may be an interrupt 888 */ 889 xs = scsipi_make_xs(periph, cmdp, cmdlen, 890 (u_char *)bp->b_data, bp->b_bcount, 891 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 892 if (__predict_false(xs == NULL)) { 893 /* 894 * out of memory. Keep this buffer in the queue, and 895 * retry later. 896 */ 897 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 898 periph); 899 return; 900 } 901 /* 902 * need to dequeue the buffer before queuing the command, 903 * because cdstart may be called recursively from the 904 * HBA driver 905 */ 906 #ifdef DIAGNOSTIC 907 if (bufq_get(sd->buf_queue) != bp) 908 panic("sdstart(): dequeued wrong buf"); 909 #else 910 bufq_get(sd->buf_queue); 911 #endif 912 error = scsipi_execute_xs(xs); 913 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 914 KASSERT(error == 0); 915 } 916 } 917 918 static void 919 sdrestart(void *v) 920 { 921 int s = splbio(); 922 sdstart((struct scsipi_periph *)v); 923 splx(s); 924 } 925 926 static void 927 sddone(struct scsipi_xfer *xs, int error) 928 { 929 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 930 struct buf *bp = xs->bp; 931 932 if (sd->flags & SDF_FLUSHING) { 933 /* Flush completed, no longer dirty. */ 934 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 935 } 936 937 if (bp) { 938 bp->b_error = error; 939 bp->b_resid = xs->resid; 940 if (error) { 941 /* on a read/write error bp->b_resid is zero, so fix */ 942 bp->b_resid = bp->b_bcount; 943 } 944 945 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 946 (bp->b_flags & B_READ)); 947 #if NRND > 0 948 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 949 #endif 950 951 biodone(bp); 952 } 953 } 954 955 static void 956 sdminphys(struct buf *bp) 957 { 958 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 959 long xmax; 960 961 /* 962 * If the device is ancient, we want to make sure that 963 * the transfer fits into a 6-byte cdb. 964 * 965 * XXX Note that the SCSI-I spec says that 256-block transfers 966 * are allowed in a 6-byte read/write, and are specified 967 * by settng the "length" to 0. However, we're conservative 968 * here, allowing only 255-block transfers in case an 969 * ancient device gets confused by length == 0. A length of 0 970 * in a 10-byte read/write actually means 0 blocks. 971 */ 972 if ((sd->flags & SDF_ANCIENT) && 973 ((sd->sc_periph->periph_flags & 974 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 975 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 976 977 if (bp->b_bcount > xmax) 978 bp->b_bcount = xmax; 979 } 980 981 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 982 } 983 984 static int 985 sdread(dev_t dev, struct uio *uio, int ioflag) 986 { 987 988 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 989 } 990 991 static int 992 sdwrite(dev_t dev, struct uio *uio, int ioflag) 993 { 994 995 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 996 } 997 998 /* 999 * Perform special action on behalf of the user 1000 * Knows about the internals of this device 1001 */ 1002 static int 1003 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1004 { 1005 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 1006 struct scsipi_periph *periph = sd->sc_periph; 1007 int part = SDPART(dev); 1008 int error = 0; 1009 #ifdef __HAVE_OLD_DISKLABEL 1010 struct disklabel *newlabel = NULL; 1011 #endif 1012 1013 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1014 1015 /* 1016 * If the device is not valid, some IOCTLs can still be 1017 * handled on the raw partition. Check this here. 1018 */ 1019 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1020 switch (cmd) { 1021 case DIOCKLABEL: 1022 case DIOCWLABEL: 1023 case DIOCLOCK: 1024 case DIOCEJECT: 1025 case ODIOCEJECT: 1026 case DIOCGCACHE: 1027 case DIOCSCACHE: 1028 case SCIOCIDENTIFY: 1029 case OSCIOCIDENTIFY: 1030 case SCIOCCOMMAND: 1031 case SCIOCDEBUG: 1032 if (part == RAW_PART) 1033 break; 1034 /* FALLTHROUGH */ 1035 default: 1036 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1037 return (ENODEV); 1038 else 1039 return (EIO); 1040 } 1041 } 1042 1043 switch (cmd) { 1044 case DIOCGDINFO: 1045 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1046 return (0); 1047 1048 #ifdef __HAVE_OLD_DISKLABEL 1049 case ODIOCGDINFO: 1050 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1051 if (newlabel == NULL) 1052 return EIO; 1053 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1054 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1055 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1056 else 1057 error = ENOTTY; 1058 free(newlabel, M_TEMP); 1059 return error; 1060 #endif 1061 1062 case DIOCGPART: 1063 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1064 ((struct partinfo *)addr)->part = 1065 &sd->sc_dk.dk_label->d_partitions[part]; 1066 return (0); 1067 1068 case DIOCWDINFO: 1069 case DIOCSDINFO: 1070 #ifdef __HAVE_OLD_DISKLABEL 1071 case ODIOCWDINFO: 1072 case ODIOCSDINFO: 1073 #endif 1074 { 1075 struct disklabel *lp; 1076 1077 if ((flag & FWRITE) == 0) 1078 return (EBADF); 1079 1080 #ifdef __HAVE_OLD_DISKLABEL 1081 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1082 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1083 if (newlabel == NULL) 1084 return EIO; 1085 memset(newlabel, 0, sizeof newlabel); 1086 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1087 lp = newlabel; 1088 } else 1089 #endif 1090 lp = (struct disklabel *)addr; 1091 1092 mutex_enter(&sd->sc_dk.dk_openlock); 1093 sd->flags |= SDF_LABELLING; 1094 1095 error = setdisklabel(sd->sc_dk.dk_label, 1096 lp, /*sd->sc_dk.dk_openmask : */0, 1097 sd->sc_dk.dk_cpulabel); 1098 if (error == 0) { 1099 if (cmd == DIOCWDINFO 1100 #ifdef __HAVE_OLD_DISKLABEL 1101 || cmd == ODIOCWDINFO 1102 #endif 1103 ) 1104 error = writedisklabel(SDLABELDEV(dev), 1105 sdstrategy, sd->sc_dk.dk_label, 1106 sd->sc_dk.dk_cpulabel); 1107 } 1108 1109 sd->flags &= ~SDF_LABELLING; 1110 mutex_exit(&sd->sc_dk.dk_openlock); 1111 #ifdef __HAVE_OLD_DISKLABEL 1112 if (newlabel != NULL) 1113 free(newlabel, M_TEMP); 1114 #endif 1115 return (error); 1116 } 1117 1118 case DIOCKLABEL: 1119 if (*(int *)addr) 1120 periph->periph_flags |= PERIPH_KEEP_LABEL; 1121 else 1122 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1123 return (0); 1124 1125 case DIOCWLABEL: 1126 if ((flag & FWRITE) == 0) 1127 return (EBADF); 1128 if (*(int *)addr) 1129 sd->flags |= SDF_WLABEL; 1130 else 1131 sd->flags &= ~SDF_WLABEL; 1132 return (0); 1133 1134 case DIOCLOCK: 1135 if (periph->periph_flags & PERIPH_REMOVABLE) 1136 return (scsipi_prevent(periph, 1137 (*(int *)addr) ? 1138 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1139 else 1140 return (ENOTTY); 1141 1142 case DIOCEJECT: 1143 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1144 return (ENOTTY); 1145 if (*(int *)addr == 0) { 1146 /* 1147 * Don't force eject: check that we are the only 1148 * partition open. If so, unlock it. 1149 */ 1150 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1151 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1152 sd->sc_dk.dk_openmask) { 1153 error = scsipi_prevent(periph, SPAMR_ALLOW, 1154 XS_CTL_IGNORE_NOT_READY); 1155 if (error) 1156 return (error); 1157 } else { 1158 return (EBUSY); 1159 } 1160 } 1161 /* FALLTHROUGH */ 1162 case ODIOCEJECT: 1163 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1164 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1165 1166 case DIOCGDEFLABEL: 1167 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1168 return (0); 1169 1170 #ifdef __HAVE_OLD_DISKLABEL 1171 case ODIOCGDEFLABEL: 1172 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1173 if (newlabel == NULL) 1174 return EIO; 1175 sdgetdefaultlabel(sd, newlabel); 1176 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1177 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1178 else 1179 error = ENOTTY; 1180 free(newlabel, M_TEMP); 1181 return error; 1182 #endif 1183 1184 case DIOCGCACHE: 1185 return (sd_getcache(sd, (int *) addr)); 1186 1187 case DIOCSCACHE: 1188 if ((flag & FWRITE) == 0) 1189 return (EBADF); 1190 return (sd_setcache(sd, *(int *) addr)); 1191 1192 case DIOCCACHESYNC: 1193 /* 1194 * XXX Do we really need to care about having a writable 1195 * file descriptor here? 1196 */ 1197 if ((flag & FWRITE) == 0) 1198 return (EBADF); 1199 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1200 error = sd_flush(sd, 0); 1201 if (error) 1202 sd->flags &= ~SDF_FLUSHING; 1203 else 1204 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1205 } else 1206 error = 0; 1207 return (error); 1208 1209 case DIOCAWEDGE: 1210 { 1211 struct dkwedge_info *dkw = (void *) addr; 1212 1213 if ((flag & FWRITE) == 0) 1214 return (EBADF); 1215 1216 /* If the ioctl happens here, the parent is us. */ 1217 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1218 sizeof(dkw->dkw_parent)); 1219 return (dkwedge_add(dkw)); 1220 } 1221 1222 case DIOCDWEDGE: 1223 { 1224 struct dkwedge_info *dkw = (void *) addr; 1225 1226 if ((flag & FWRITE) == 0) 1227 return (EBADF); 1228 1229 /* If the ioctl happens here, the parent is us. */ 1230 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1231 sizeof(dkw->dkw_parent)); 1232 return (dkwedge_del(dkw)); 1233 } 1234 1235 case DIOCLWEDGES: 1236 { 1237 struct dkwedge_list *dkwl = (void *) addr; 1238 1239 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1240 } 1241 1242 default: 1243 if (part != RAW_PART) 1244 return (ENOTTY); 1245 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1246 } 1247 1248 #ifdef DIAGNOSTIC 1249 panic("sdioctl: impossible"); 1250 #endif 1251 } 1252 1253 static void 1254 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1255 { 1256 1257 memset(lp, 0, sizeof(struct disklabel)); 1258 1259 lp->d_secsize = sd->params.blksize; 1260 lp->d_ntracks = sd->params.heads; 1261 lp->d_nsectors = sd->params.sectors; 1262 lp->d_ncylinders = sd->params.cyls; 1263 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1264 1265 switch (scsipi_periph_bustype(sd->sc_periph)) { 1266 case SCSIPI_BUSTYPE_SCSI: 1267 lp->d_type = DTYPE_SCSI; 1268 break; 1269 case SCSIPI_BUSTYPE_ATAPI: 1270 lp->d_type = DTYPE_ATAPI; 1271 break; 1272 } 1273 /* 1274 * XXX 1275 * We could probe the mode pages to figure out what kind of disc it is. 1276 * Is this worthwhile? 1277 */ 1278 strncpy(lp->d_typename, sd->name, 16); 1279 strncpy(lp->d_packname, "fictitious", 16); 1280 lp->d_secperunit = sd->params.disksize; 1281 lp->d_rpm = sd->params.rot_rate; 1282 lp->d_interleave = 1; 1283 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1284 D_REMOVABLE : 0; 1285 1286 lp->d_partitions[RAW_PART].p_offset = 0; 1287 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1288 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1289 lp->d_npartitions = RAW_PART + 1; 1290 1291 lp->d_magic = DISKMAGIC; 1292 lp->d_magic2 = DISKMAGIC; 1293 lp->d_checksum = dkcksum(lp); 1294 } 1295 1296 1297 /* 1298 * Load the label information on the named device 1299 */ 1300 static int 1301 sdgetdisklabel(struct sd_softc *sd) 1302 { 1303 struct disklabel *lp = sd->sc_dk.dk_label; 1304 const char *errstring; 1305 1306 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1307 1308 sdgetdefaultlabel(sd, lp); 1309 1310 if (lp->d_secpercyl == 0) { 1311 lp->d_secpercyl = 100; 1312 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1313 } 1314 1315 /* 1316 * Call the generic disklabel extraction routine 1317 */ 1318 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1319 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1320 if (errstring) { 1321 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1322 return EIO; 1323 } 1324 return 0; 1325 } 1326 1327 static void 1328 sd_shutdown(void *arg) 1329 { 1330 struct sd_softc *sd = arg; 1331 1332 /* 1333 * If the disk cache needs to be flushed, and the disk supports 1334 * it, flush it. We're cold at this point, so we poll for 1335 * completion. 1336 */ 1337 if ((sd->flags & SDF_DIRTY) != 0) { 1338 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1339 aprint_error_dev(sd->sc_dev, 1340 "cache synchronization failed\n"); 1341 sd->flags &= ~SDF_FLUSHING; 1342 } else 1343 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1344 } 1345 } 1346 1347 static bool 1348 sd_suspend(device_t dv PMF_FN_ARGS) 1349 { 1350 struct sd_softc *sd = device_private(dv); 1351 1352 sd_shutdown(sd); /* XXX no need to poll */ 1353 return true; 1354 } 1355 1356 /* 1357 * Check Errors 1358 */ 1359 static int 1360 sd_interpret_sense(struct scsipi_xfer *xs) 1361 { 1362 struct scsipi_periph *periph = xs->xs_periph; 1363 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1364 struct sd_softc *sd = device_private(periph->periph_dev); 1365 int s, error, retval = EJUSTRETURN; 1366 1367 /* 1368 * If the periph is already recovering, just do the normal 1369 * error processing. 1370 */ 1371 if (periph->periph_flags & PERIPH_RECOVERING) 1372 return (retval); 1373 1374 /* 1375 * Ignore errors from accessing illegal fields (e.g. trying to 1376 * lock the door of a digicam, which doesn't have a door that 1377 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1378 */ 1379 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1380 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1381 sense->asc == 0x24 && 1382 sense->ascq == 0x00) { /* Illegal field in CDB */ 1383 if (!(xs->xs_control & XS_CTL_SILENT)) { 1384 scsipi_printaddr(periph); 1385 printf("no door lock\n"); 1386 } 1387 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1388 return (retval); 1389 } 1390 1391 1392 1393 /* 1394 * If the device is not open yet, let the generic code handle it. 1395 */ 1396 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1397 return (retval); 1398 1399 /* 1400 * If it isn't a extended or extended/deferred error, let 1401 * the generic code handle it. 1402 */ 1403 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1404 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1405 return (retval); 1406 1407 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1408 sense->asc == 0x4) { 1409 if (sense->ascq == 0x01) { 1410 /* 1411 * Unit In The Process Of Becoming Ready. 1412 */ 1413 printf("%s: waiting for pack to spin up...\n", 1414 device_xname(sd->sc_dev)); 1415 if (!callout_pending(&periph->periph_callout)) 1416 scsipi_periph_freeze(periph, 1); 1417 callout_reset(&periph->periph_callout, 1418 5 * hz, scsipi_periph_timed_thaw, periph); 1419 retval = ERESTART; 1420 } else if (sense->ascq == 0x02) { 1421 printf("%s: pack is stopped, restarting...\n", 1422 device_xname(sd->sc_dev)); 1423 s = splbio(); 1424 periph->periph_flags |= PERIPH_RECOVERING; 1425 splx(s); 1426 error = scsipi_start(periph, SSS_START, 1427 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1428 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1429 if (error) { 1430 aprint_error_dev(sd->sc_dev, 1431 "unable to restart pack\n"); 1432 retval = error; 1433 } else 1434 retval = ERESTART; 1435 s = splbio(); 1436 periph->periph_flags &= ~PERIPH_RECOVERING; 1437 splx(s); 1438 } 1439 } 1440 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1441 sense->asc == 0x31 && 1442 sense->ascq == 0x00) { /* maybe for any asq ? */ 1443 /* Medium Format Corrupted */ 1444 retval = EFTYPE; 1445 } 1446 return (retval); 1447 } 1448 1449 1450 static int 1451 sdsize(dev_t dev) 1452 { 1453 struct sd_softc *sd; 1454 int part, unit, omask; 1455 int size; 1456 1457 unit = SDUNIT(dev); 1458 sd = device_lookup_private(&sd_cd, unit); 1459 if (sd == NULL) 1460 return (-1); 1461 1462 if (!device_is_active(sd->sc_dev)) 1463 return (-1); 1464 1465 part = SDPART(dev); 1466 omask = sd->sc_dk.dk_openmask & (1 << part); 1467 1468 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1469 return (-1); 1470 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1471 size = -1; 1472 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1473 size = -1; 1474 else 1475 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1476 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1477 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1478 return (-1); 1479 return (size); 1480 } 1481 1482 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1483 static struct scsipi_xfer sx; 1484 static int sddoingadump; 1485 1486 /* 1487 * dump all of physical memory into the partition specified, starting 1488 * at offset 'dumplo' into the partition. 1489 */ 1490 static int 1491 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1492 { 1493 struct sd_softc *sd; /* disk unit to do the I/O */ 1494 struct disklabel *lp; /* disk's disklabel */ 1495 int unit, part; 1496 int sectorsize; /* size of a disk sector */ 1497 int nsects; /* number of sectors in partition */ 1498 int sectoff; /* sector offset of partition */ 1499 int totwrt; /* total number of sectors left to write */ 1500 int nwrt; /* current number of sectors to write */ 1501 struct scsipi_rw_10 cmd; /* write command */ 1502 struct scsipi_xfer *xs; /* ... convenience */ 1503 struct scsipi_periph *periph; 1504 struct scsipi_channel *chan; 1505 1506 /* Check if recursive dump; if so, punt. */ 1507 if (sddoingadump) 1508 return (EFAULT); 1509 1510 /* Mark as active early. */ 1511 sddoingadump = 1; 1512 1513 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1514 part = SDPART(dev); 1515 1516 /* Check for acceptable drive number. */ 1517 sd = device_lookup_private(&sd_cd, unit); 1518 if (sd == NULL) 1519 return (ENXIO); 1520 1521 if (!device_is_active(sd->sc_dev)) 1522 return (ENODEV); 1523 1524 periph = sd->sc_periph; 1525 chan = periph->periph_channel; 1526 1527 /* Make sure it was initialized. */ 1528 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1529 return (ENXIO); 1530 1531 /* Convert to disk sectors. Request must be a multiple of size. */ 1532 lp = sd->sc_dk.dk_label; 1533 sectorsize = lp->d_secsize; 1534 if ((size % sectorsize) != 0) 1535 return (EFAULT); 1536 totwrt = size / sectorsize; 1537 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1538 1539 nsects = lp->d_partitions[part].p_size; 1540 sectoff = lp->d_partitions[part].p_offset; 1541 1542 /* Check transfer bounds against partition size. */ 1543 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1544 return (EINVAL); 1545 1546 /* Offset block number to start of partition. */ 1547 blkno += sectoff; 1548 1549 xs = &sx; 1550 1551 while (totwrt > 0) { 1552 nwrt = totwrt; /* XXX */ 1553 #ifndef SD_DUMP_NOT_TRUSTED 1554 /* 1555 * Fill out the scsi command 1556 */ 1557 memset(&cmd, 0, sizeof(cmd)); 1558 cmd.opcode = WRITE_10; 1559 _lto4b(blkno, cmd.addr); 1560 _lto2b(nwrt, cmd.length); 1561 /* 1562 * Fill out the scsipi_xfer structure 1563 * Note: we cannot sleep as we may be an interrupt 1564 * don't use scsipi_command() as it may want to wait 1565 * for an xs. 1566 */ 1567 memset(xs, 0, sizeof(sx)); 1568 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1569 XS_CTL_DATA_OUT; 1570 xs->xs_status = 0; 1571 xs->xs_periph = periph; 1572 xs->xs_retries = SDRETRIES; 1573 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1574 xs->cmd = (struct scsipi_generic *)&cmd; 1575 xs->cmdlen = sizeof(cmd); 1576 xs->resid = nwrt * sectorsize; 1577 xs->error = XS_NOERROR; 1578 xs->bp = 0; 1579 xs->data = va; 1580 xs->datalen = nwrt * sectorsize; 1581 callout_init(&xs->xs_callout, 0); 1582 1583 /* 1584 * Pass all this info to the scsi driver. 1585 */ 1586 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1587 if ((xs->xs_status & XS_STS_DONE) == 0 || 1588 xs->error != XS_NOERROR) 1589 return (EIO); 1590 #else /* SD_DUMP_NOT_TRUSTED */ 1591 /* Let's just talk about this first... */ 1592 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1593 delay(500 * 1000); /* half a second */ 1594 #endif /* SD_DUMP_NOT_TRUSTED */ 1595 1596 /* update block count */ 1597 totwrt -= nwrt; 1598 blkno += nwrt; 1599 va = (char *)va + sectorsize * nwrt; 1600 } 1601 sddoingadump = 0; 1602 return (0); 1603 } 1604 1605 static int 1606 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1607 int page, int flags, int *big) 1608 { 1609 1610 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1611 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1612 *big = 1; 1613 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1614 size + sizeof(struct scsi_mode_parameter_header_10), 1615 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1616 } else { 1617 *big = 0; 1618 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1619 size + sizeof(struct scsi_mode_parameter_header_6), 1620 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1621 } 1622 } 1623 1624 static int 1625 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1626 int flags, int big) 1627 { 1628 1629 if (big) { 1630 struct scsi_mode_parameter_header_10 *header = sense; 1631 1632 _lto2b(0, header->data_length); 1633 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1634 size + sizeof(struct scsi_mode_parameter_header_10), 1635 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1636 } else { 1637 struct scsi_mode_parameter_header_6 *header = sense; 1638 1639 header->data_length = 0; 1640 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1641 size + sizeof(struct scsi_mode_parameter_header_6), 1642 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1643 } 1644 } 1645 1646 /* 1647 * sd_validate_blksize: 1648 * 1649 * Validate the block size. Print error if periph is specified, 1650 */ 1651 static int 1652 sd_validate_blksize(struct scsipi_periph *periph, int len) 1653 { 1654 1655 switch (len) { 1656 case 256: 1657 case 512: 1658 case 1024: 1659 case 2048: 1660 case 4096: 1661 return 1; 1662 } 1663 1664 if (periph) { 1665 scsipi_printaddr(periph); 1666 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1667 (len ^ (1 << (ffs(len) - 1))) ? 1668 "preposterous" : "unsupported", 1669 len, SD_DEFAULT_BLKSIZE); 1670 } 1671 1672 return 0; 1673 } 1674 1675 /* 1676 * sd_read_capacity: 1677 * 1678 * Find out from the device what its capacity is. 1679 */ 1680 static u_int64_t 1681 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1682 { 1683 union { 1684 struct scsipi_read_capacity_10 cmd; 1685 struct scsipi_read_capacity_16 cmd16; 1686 } cmd; 1687 union { 1688 struct scsipi_read_capacity_10_data data; 1689 struct scsipi_read_capacity_16_data data16; 1690 } *datap; 1691 uint64_t rv; 1692 1693 memset(&cmd, 0, sizeof(cmd)); 1694 cmd.cmd.opcode = READ_CAPACITY_10; 1695 1696 /* 1697 * Don't allocate data buffer on stack; 1698 * The lower driver layer might use the same stack and 1699 * if it uses region which is in the same cacheline, 1700 * cache flush ops against the data buffer won't work properly. 1701 */ 1702 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1703 if (datap == NULL) 1704 return 0; 1705 1706 /* 1707 * If the command works, interpret the result as a 4 byte 1708 * number of blocks 1709 */ 1710 rv = 0; 1711 memset(datap, 0, sizeof(datap->data)); 1712 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1713 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1714 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1715 goto out; 1716 1717 if (_4btol(datap->data.addr) != 0xffffffff) { 1718 *blksize = _4btol(datap->data.length); 1719 rv = _4btol(datap->data.addr) + 1; 1720 goto out; 1721 } 1722 1723 /* 1724 * Device is larger than can be reflected by READ CAPACITY (10). 1725 * Try READ CAPACITY (16). 1726 */ 1727 1728 memset(&cmd, 0, sizeof(cmd)); 1729 cmd.cmd16.opcode = READ_CAPACITY_16; 1730 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1731 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1732 1733 memset(datap, 0, sizeof(datap->data16)); 1734 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1735 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1736 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1737 goto out; 1738 1739 *blksize = _4btol(datap->data16.length); 1740 rv = _8btol(datap->data16.addr) + 1; 1741 1742 out: 1743 free(datap, M_TEMP); 1744 return rv; 1745 } 1746 1747 static int 1748 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1749 { 1750 struct { 1751 struct scsi_mode_parameter_header_6 header; 1752 /* no block descriptor */ 1753 u_int8_t pg_code; /* page code (should be 6) */ 1754 u_int8_t pg_length; /* page length (should be 11) */ 1755 u_int8_t wcd; /* bit0: cache disable */ 1756 u_int8_t lbs[2]; /* logical block size */ 1757 u_int8_t size[5]; /* number of log. blocks */ 1758 u_int8_t pp; /* power/performance */ 1759 u_int8_t flags; 1760 u_int8_t resvd; 1761 } scsipi_sense; 1762 u_int64_t blocks; 1763 int error, blksize; 1764 1765 /* 1766 * sd_read_capacity (ie "read capacity") and mode sense page 6 1767 * give the same information. Do both for now, and check 1768 * for consistency. 1769 * XXX probably differs for removable media 1770 */ 1771 dp->blksize = SD_DEFAULT_BLKSIZE; 1772 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1773 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1774 1775 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1776 &scsipi_sense.header, sizeof(scsipi_sense), 1777 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1778 1779 if (error != 0) 1780 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1781 1782 dp->blksize = blksize; 1783 if (!sd_validate_blksize(NULL, dp->blksize)) 1784 dp->blksize = _2btol(scsipi_sense.lbs); 1785 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1786 dp->blksize = SD_DEFAULT_BLKSIZE; 1787 1788 /* 1789 * Create a pseudo-geometry. 1790 */ 1791 dp->heads = 64; 1792 dp->sectors = 32; 1793 dp->cyls = blocks / (dp->heads * dp->sectors); 1794 dp->disksize = _5btol(scsipi_sense.size); 1795 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1796 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1797 (unsigned long long)dp->disksize, 1798 (unsigned long long)blocks); 1799 dp->disksize = blocks; 1800 } 1801 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1802 1803 return (SDGP_RESULT_OK); 1804 } 1805 1806 /* 1807 * Get the scsi driver to send a full inquiry to the * device and use the 1808 * results to fill out the disk parameter structure. 1809 */ 1810 static int 1811 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1812 { 1813 u_int64_t blocks; 1814 int error, blksize; 1815 #if 0 1816 int i; 1817 u_int8_t *p; 1818 #endif 1819 1820 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1821 flags); 1822 if (blocks == 0) { 1823 struct scsipi_read_format_capacities cmd; 1824 struct { 1825 struct scsipi_capacity_list_header header; 1826 struct scsipi_capacity_descriptor desc; 1827 } __packed data; 1828 1829 memset(&cmd, 0, sizeof(cmd)); 1830 memset(&data, 0, sizeof(data)); 1831 cmd.opcode = READ_FORMAT_CAPACITIES; 1832 _lto2b(sizeof(data), cmd.length); 1833 1834 error = scsipi_command(sd->sc_periph, 1835 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1836 SDRETRIES, 20000, NULL, 1837 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1838 if (error == EFTYPE) { 1839 /* Medium Format Corrupted, handle as not formatted */ 1840 return (SDGP_RESULT_UNFORMATTED); 1841 } 1842 if (error || data.header.length == 0) 1843 return (SDGP_RESULT_OFFLINE); 1844 1845 #if 0 1846 printf("rfc: length=%d\n", data.header.length); 1847 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"); 1848 #endif 1849 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1850 case SCSIPI_CAP_DESC_CODE_RESERVED: 1851 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1852 break; 1853 1854 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1855 return (SDGP_RESULT_UNFORMATTED); 1856 1857 case SCSIPI_CAP_DESC_CODE_NONE: 1858 return (SDGP_RESULT_OFFLINE); 1859 } 1860 1861 dp->disksize = blocks = _4btol(data.desc.nblks); 1862 if (blocks == 0) 1863 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1864 1865 blksize = _3btol(data.desc.blklen); 1866 1867 } else if (!sd_validate_blksize(NULL, blksize)) { 1868 struct sd_mode_sense_data scsipi_sense; 1869 int big, bsize; 1870 struct scsi_general_block_descriptor *bdesc; 1871 1872 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1873 error = sd_mode_sense(sd, 0, &scsipi_sense, 1874 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1875 if (!error) { 1876 if (big) { 1877 bdesc = (void *)(&scsipi_sense.header.big + 1); 1878 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1879 } else { 1880 bdesc = (void *)(&scsipi_sense.header.small + 1); 1881 bsize = scsipi_sense.header.small.blk_desc_len; 1882 } 1883 1884 #if 0 1885 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1886 printf("page 0 bsize=%d\n", bsize); 1887 printf("page 0 ok\n"); 1888 #endif 1889 1890 if (bsize >= 8) { 1891 blksize = _3btol(bdesc->blklen); 1892 } 1893 } 1894 } 1895 1896 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1897 blksize = SD_DEFAULT_BLKSIZE; 1898 1899 dp->blksize = blksize; 1900 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1901 return (0); 1902 } 1903 1904 static int 1905 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1906 { 1907 struct sd_mode_sense_data scsipi_sense; 1908 int error; 1909 int big, byte2; 1910 size_t poffset; 1911 union scsi_disk_pages *pages; 1912 1913 byte2 = SMS_DBD; 1914 again: 1915 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1916 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1917 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1918 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1919 flags | XS_CTL_SILENT, &big); 1920 if (error) { 1921 if (byte2 == SMS_DBD) { 1922 /* No result; try once more with DBD off */ 1923 byte2 = 0; 1924 goto again; 1925 } 1926 return (error); 1927 } 1928 1929 if (big) { 1930 poffset = sizeof scsipi_sense.header.big; 1931 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1932 } else { 1933 poffset = sizeof scsipi_sense.header.small; 1934 poffset += scsipi_sense.header.small.blk_desc_len; 1935 } 1936 1937 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1938 return ERESTART; 1939 1940 pages = (void *)((u_long)&scsipi_sense + poffset); 1941 #if 0 1942 { 1943 size_t i; 1944 u_int8_t *p; 1945 1946 printf("page 4 sense:"); 1947 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1948 i--, p++) 1949 printf(" %02x", *p); 1950 printf("\n"); 1951 printf("page 4 pg_code=%d sense=%p/%p\n", 1952 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1953 } 1954 #endif 1955 1956 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1957 return (ERESTART); 1958 1959 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1960 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1961 _3btol(pages->rigid_geometry.ncyl), 1962 pages->rigid_geometry.nheads, 1963 _2btol(pages->rigid_geometry.st_cyl_wp), 1964 _2btol(pages->rigid_geometry.st_cyl_rwc), 1965 _2btol(pages->rigid_geometry.land_zone))); 1966 1967 /* 1968 * KLUDGE!! (for zone recorded disks) 1969 * give a number of sectors so that sec * trks * cyls 1970 * is <= disk_size 1971 * can lead to wasted space! THINK ABOUT THIS ! 1972 */ 1973 dp->heads = pages->rigid_geometry.nheads; 1974 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1975 if (dp->heads == 0 || dp->cyls == 0) 1976 return (ERESTART); 1977 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1978 1979 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1980 if (dp->rot_rate == 0) 1981 dp->rot_rate = 3600; 1982 1983 #if 0 1984 printf("page 4 ok\n"); 1985 #endif 1986 return (0); 1987 } 1988 1989 static int 1990 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1991 { 1992 struct sd_mode_sense_data scsipi_sense; 1993 int error; 1994 int big, byte2; 1995 size_t poffset; 1996 union scsi_disk_pages *pages; 1997 1998 byte2 = SMS_DBD; 1999 again: 2000 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2001 error = sd_mode_sense(sd, 0, &scsipi_sense, 2002 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2003 sizeof(scsipi_sense.pages.flex_geometry), 5, 2004 flags | XS_CTL_SILENT, &big); 2005 if (error) { 2006 if (byte2 == SMS_DBD) { 2007 /* No result; try once more with DBD off */ 2008 byte2 = 0; 2009 goto again; 2010 } 2011 return (error); 2012 } 2013 2014 if (big) { 2015 poffset = sizeof scsipi_sense.header.big; 2016 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2017 } else { 2018 poffset = sizeof scsipi_sense.header.small; 2019 poffset += scsipi_sense.header.small.blk_desc_len; 2020 } 2021 2022 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2023 return ERESTART; 2024 2025 pages = (void *)((u_long)&scsipi_sense + poffset); 2026 #if 0 2027 { 2028 size_t i; 2029 u_int8_t *p; 2030 2031 printf("page 5 sense:"); 2032 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2033 i--, p++) 2034 printf(" %02x", *p); 2035 printf("\n"); 2036 printf("page 5 pg_code=%d sense=%p/%p\n", 2037 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2038 } 2039 #endif 2040 2041 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2042 return (ERESTART); 2043 2044 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2045 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2046 _3btol(pages->flex_geometry.ncyl), 2047 pages->flex_geometry.nheads, 2048 pages->flex_geometry.ph_sec_tr, 2049 _2btol(pages->flex_geometry.bytes_s))); 2050 2051 dp->heads = pages->flex_geometry.nheads; 2052 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2053 dp->sectors = pages->flex_geometry.ph_sec_tr; 2054 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2055 return (ERESTART); 2056 2057 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2058 if (dp->rot_rate == 0) 2059 dp->rot_rate = 3600; 2060 2061 #if 0 2062 printf("page 5 ok\n"); 2063 #endif 2064 return (0); 2065 } 2066 2067 static int 2068 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2069 { 2070 int error; 2071 2072 /* 2073 * If offline, the SDEV_MEDIA_LOADED flag will be 2074 * cleared by the caller if necessary. 2075 */ 2076 if (sd->type == T_SIMPLE_DIRECT) { 2077 error = sd_get_simplifiedparms(sd, dp, flags); 2078 if (!error) 2079 disk_blocksize(&sd->sc_dk, dp->blksize); 2080 return (error); 2081 } 2082 2083 error = sd_get_capacity(sd, dp, flags); 2084 if (error) 2085 return (error); 2086 2087 disk_blocksize(&sd->sc_dk, dp->blksize); 2088 2089 if (sd->type == T_OPTICAL) 2090 goto page0; 2091 2092 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2093 if (!sd_get_parms_page5(sd, dp, flags) || 2094 !sd_get_parms_page4(sd, dp, flags)) 2095 return (SDGP_RESULT_OK); 2096 } else { 2097 if (!sd_get_parms_page4(sd, dp, flags) || 2098 !sd_get_parms_page5(sd, dp, flags)) 2099 return (SDGP_RESULT_OK); 2100 } 2101 2102 page0: 2103 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2104 /* Try calling driver's method for figuring out geometry. */ 2105 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2106 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2107 (sd->sc_periph, dp, dp->disksize)) { 2108 /* 2109 * Use adaptec standard fictitious geometry 2110 * this depends on which controller (e.g. 1542C is 2111 * different. but we have to put SOMETHING here..) 2112 */ 2113 dp->heads = 64; 2114 dp->sectors = 32; 2115 dp->cyls = dp->disksize / (64 * 32); 2116 } 2117 dp->rot_rate = 3600; 2118 return (SDGP_RESULT_OK); 2119 } 2120 2121 static int 2122 sd_flush(struct sd_softc *sd, int flags) 2123 { 2124 struct scsipi_periph *periph = sd->sc_periph; 2125 struct scsi_synchronize_cache_10 cmd; 2126 2127 /* 2128 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2129 * We issue with address 0 length 0, which should be 2130 * interpreted by the device as "all remaining blocks 2131 * starting at address 0". We ignore ILLEGAL REQUEST 2132 * in the event that the command is not supported by 2133 * the device, and poll for completion so that we know 2134 * that the cache has actually been flushed. 2135 * 2136 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2137 * command, as indicated by our quirks flags. 2138 * 2139 * XXX What about older devices? 2140 */ 2141 if (periph->periph_version < 2 || 2142 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2143 return (0); 2144 2145 sd->flags |= SDF_FLUSHING; 2146 memset(&cmd, 0, sizeof(cmd)); 2147 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2148 2149 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2150 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2151 } 2152 2153 static int 2154 sd_getcache(struct sd_softc *sd, int *bitsp) 2155 { 2156 struct scsipi_periph *periph = sd->sc_periph; 2157 struct sd_mode_sense_data scsipi_sense; 2158 int error, bits = 0; 2159 int big; 2160 union scsi_disk_pages *pages; 2161 2162 if (periph->periph_version < 2) 2163 return (EOPNOTSUPP); 2164 2165 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2166 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2167 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2168 if (error) 2169 return (error); 2170 2171 if (big) 2172 pages = (void *)(&scsipi_sense.header.big + 1); 2173 else 2174 pages = (void *)(&scsipi_sense.header.small + 1); 2175 2176 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2177 bits |= DKCACHE_READ; 2178 if (pages->caching_params.flags & CACHING_WCE) 2179 bits |= DKCACHE_WRITE; 2180 if (pages->caching_params.pg_code & PGCODE_PS) 2181 bits |= DKCACHE_SAVE; 2182 2183 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2184 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2185 sizeof(scsipi_sense.pages.caching_params), 2186 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2187 if (error == 0) { 2188 if (big) 2189 pages = (void *)(&scsipi_sense.header.big + 1); 2190 else 2191 pages = (void *)(&scsipi_sense.header.small + 1); 2192 2193 if (pages->caching_params.flags & CACHING_RCD) 2194 bits |= DKCACHE_RCHANGE; 2195 if (pages->caching_params.flags & CACHING_WCE) 2196 bits |= DKCACHE_WCHANGE; 2197 } 2198 2199 *bitsp = bits; 2200 2201 return (0); 2202 } 2203 2204 static int 2205 sd_setcache(struct sd_softc *sd, int bits) 2206 { 2207 struct scsipi_periph *periph = sd->sc_periph; 2208 struct sd_mode_sense_data scsipi_sense; 2209 int error; 2210 uint8_t oflags, byte2 = 0; 2211 int big; 2212 union scsi_disk_pages *pages; 2213 2214 if (periph->periph_version < 2) 2215 return (EOPNOTSUPP); 2216 2217 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2218 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2219 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2220 if (error) 2221 return (error); 2222 2223 if (big) 2224 pages = (void *)(&scsipi_sense.header.big + 1); 2225 else 2226 pages = (void *)(&scsipi_sense.header.small + 1); 2227 2228 oflags = pages->caching_params.flags; 2229 2230 if (bits & DKCACHE_READ) 2231 pages->caching_params.flags &= ~CACHING_RCD; 2232 else 2233 pages->caching_params.flags |= CACHING_RCD; 2234 2235 if (bits & DKCACHE_WRITE) 2236 pages->caching_params.flags |= CACHING_WCE; 2237 else 2238 pages->caching_params.flags &= ~CACHING_WCE; 2239 2240 if (oflags == pages->caching_params.flags) 2241 return (0); 2242 2243 pages->caching_params.pg_code &= PGCODE_MASK; 2244 2245 if (bits & DKCACHE_SAVE) 2246 byte2 |= SMS_SP; 2247 2248 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2249 sizeof(struct scsi_mode_page_header) + 2250 pages->caching_params.pg_length, 0, big)); 2251 } 2252 2253 static void 2254 sd_set_properties(struct sd_softc *sd) 2255 { 2256 prop_dictionary_t disk_info, odisk_info, geom; 2257 2258 disk_info = prop_dictionary_create(); 2259 2260 geom = prop_dictionary_create(); 2261 2262 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2263 sd->params.disksize); 2264 2265 prop_dictionary_set_uint32(geom, "sector-size", 2266 sd->params.blksize); 2267 2268 prop_dictionary_set_uint16(geom, "sectors-per-track", 2269 sd->params.sectors); 2270 2271 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2272 sd->params.heads); 2273 2274 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2275 sd->params.cyls); 2276 2277 prop_dictionary_set(disk_info, "geometry", geom); 2278 prop_object_release(geom); 2279 2280 prop_dictionary_set(device_properties(sd->sc_dev), 2281 "disk-info", disk_info); 2282 2283 /* 2284 * Don't release disk_info here; we keep a reference to it. 2285 * disk_detach() will release it when we go away. 2286 */ 2287 2288 odisk_info = sd->sc_dk.dk_info; 2289 sd->sc_dk.dk_info = disk_info; 2290 if (odisk_info) 2291 prop_object_release(odisk_info); 2292 } 2293