1 /* $NetBSD: sd.c,v 1.293 2010/04/14 22:26:33 jakllsch Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Originally written by Julian Elischer (julian@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 1.293 2010/04/14 22:26:33 jakllsch 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, const pmf_qual_t *); 104 static bool sd_shutdown(device_t, int); 105 static int sd_interpret_sense(struct scsipi_xfer *); 106 static int sdlastclose(device_t); 107 108 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 109 int, int *); 110 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 111 int); 112 static int sd_validate_blksize(struct scsipi_periph *, int); 113 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 114 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 115 int); 116 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 117 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 118 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 119 int); 120 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 121 int); 122 123 static int sd_flush(struct sd_softc *, int); 124 static int sd_getcache(struct sd_softc *, int *); 125 static int sd_setcache(struct sd_softc *, int); 126 127 static int sdmatch(device_t, cfdata_t, void *); 128 static void sdattach(device_t, device_t, void *); 129 static int sddetach(device_t, int); 130 static void sd_set_properties(struct sd_softc *); 131 132 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 133 NULL, 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(device_t parent, cfdata_t 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(device_t parent, device_t 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 hooks at the "leaves" of the device tree 309 * are run, first (thus guaranteeing that our hook runs before 310 * our ancestors'). 311 */ 312 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 313 aprint_error_dev(self, "couldn't establish power handler\n"); 314 315 #if NRND > 0 316 /* 317 * attach the device into the random source list 318 */ 319 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 320 RND_TYPE_DISK, 0); 321 #endif 322 323 /* Discover wedges on this disk. */ 324 dkwedge_discover(&sd->sc_dk); 325 } 326 327 static int 328 sddetach(device_t self, int flags) 329 { 330 struct sd_softc *sd = device_private(self); 331 int s, bmaj, cmaj, i, mn, rc; 332 333 if ((rc = disk_begindetach(&sd->sc_dk, sdlastclose, self, flags)) != 0) 334 return rc; 335 336 /* locate the major number */ 337 bmaj = bdevsw_lookup_major(&sd_bdevsw); 338 cmaj = cdevsw_lookup_major(&sd_cdevsw); 339 340 /* Nuke the vnodes for any open instances */ 341 for (i = 0; i < MAXPARTITIONS; i++) { 342 mn = SDMINOR(device_unit(self), i); 343 vdevgone(bmaj, mn, mn, VBLK); 344 vdevgone(cmaj, mn, mn, VCHR); 345 } 346 347 /* kill any pending restart */ 348 callout_stop(&sd->sc_callout); 349 350 /* Delete all of our wedges. */ 351 dkwedge_delall(&sd->sc_dk); 352 353 s = splbio(); 354 355 /* Kill off any queued buffers. */ 356 bufq_drain(sd->buf_queue); 357 358 bufq_free(sd->buf_queue); 359 360 /* Kill off any pending commands. */ 361 scsipi_kill_pending(sd->sc_periph); 362 363 splx(s); 364 365 /* Detach from the disk list. */ 366 disk_detach(&sd->sc_dk); 367 disk_destroy(&sd->sc_dk); 368 369 callout_destroy(&sd->sc_callout); 370 371 pmf_device_deregister(self); 372 373 #if NRND > 0 374 /* Unhook the entropy source. */ 375 rnd_detach_source(&sd->rnd_source); 376 #endif 377 378 return (0); 379 } 380 381 /* 382 * open the device. Make sure the partition info is a up-to-date as can be. 383 */ 384 static int 385 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 386 { 387 struct sd_softc *sd; 388 struct scsipi_periph *periph; 389 struct scsipi_adapter *adapt; 390 int unit, part; 391 int error; 392 393 unit = SDUNIT(dev); 394 sd = device_lookup_private(&sd_cd, unit); 395 if (sd == NULL) 396 return (ENXIO); 397 398 if (!device_is_active(sd->sc_dev)) 399 return (ENODEV); 400 401 part = SDPART(dev); 402 403 mutex_enter(&sd->sc_dk.dk_openlock); 404 405 /* 406 * If there are wedges, and this is not RAW_PART, then we 407 * need to fail. 408 */ 409 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 410 error = EBUSY; 411 goto bad1; 412 } 413 414 periph = sd->sc_periph; 415 adapt = periph->periph_channel->chan_adapter; 416 417 SC_DEBUG(periph, SCSIPI_DB1, 418 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, 419 sd_cd.cd_ndevs, part)); 420 421 /* 422 * If this is the first open of this device, add a reference 423 * to the adapter. 424 */ 425 if (sd->sc_dk.dk_openmask == 0 && 426 (error = scsipi_adapter_addref(adapt)) != 0) 427 goto bad1; 428 429 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 430 /* 431 * If any partition is open, but the disk has been invalidated, 432 * disallow further opens of non-raw partition 433 */ 434 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 435 (part != RAW_PART || fmt != S_IFCHR)) { 436 error = EIO; 437 goto bad2; 438 } 439 } else { 440 int silent; 441 442 if (part == RAW_PART && fmt == S_IFCHR) 443 silent = XS_CTL_SILENT; 444 else 445 silent = 0; 446 447 /* Check that it is still responding and ok. */ 448 error = scsipi_test_unit_ready(periph, 449 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 450 silent); 451 452 /* 453 * Start the pack spinning if necessary. Always allow the 454 * raw parition to be opened, for raw IOCTLs. Data transfers 455 * will check for SDEV_MEDIA_LOADED. 456 */ 457 if (error == EIO) { 458 int error2; 459 460 error2 = scsipi_start(periph, SSS_START, silent); 461 switch (error2) { 462 case 0: 463 error = 0; 464 break; 465 case EIO: 466 case EINVAL: 467 break; 468 default: 469 error = error2; 470 break; 471 } 472 } 473 if (error) { 474 if (silent) 475 goto out; 476 goto bad2; 477 } 478 479 periph->periph_flags |= PERIPH_OPEN; 480 481 if (periph->periph_flags & PERIPH_REMOVABLE) { 482 /* Lock the pack in. */ 483 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 484 XS_CTL_IGNORE_ILLEGAL_REQUEST | 485 XS_CTL_IGNORE_MEDIA_CHANGE | 486 XS_CTL_SILENT); 487 if (error) 488 goto bad3; 489 } 490 491 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 492 int param_error; 493 periph->periph_flags |= PERIPH_MEDIA_LOADED; 494 495 /* 496 * Load the physical device parameters. 497 * 498 * Note that if media is present but unformatted, 499 * we allow the open (so that it can be formatted!). 500 * The drive should refuse real I/O, if the media is 501 * unformatted. 502 */ 503 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 504 == SDGP_RESULT_OFFLINE) { 505 error = ENXIO; 506 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 507 goto bad3; 508 } 509 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 510 511 /* Load the partition info if not already loaded. */ 512 if (param_error == 0) { 513 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 514 error = EIO; 515 goto bad3; 516 } 517 SC_DEBUG(periph, SCSIPI_DB3, 518 ("Disklabel loaded ")); 519 } 520 } 521 } 522 523 /* Check that the partition exists. */ 524 if (part != RAW_PART && 525 (part >= sd->sc_dk.dk_label->d_npartitions || 526 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 527 error = ENXIO; 528 goto bad3; 529 } 530 531 out: /* Insure only one open at a time. */ 532 switch (fmt) { 533 case S_IFCHR: 534 sd->sc_dk.dk_copenmask |= (1 << part); 535 break; 536 case S_IFBLK: 537 sd->sc_dk.dk_bopenmask |= (1 << part); 538 break; 539 } 540 sd->sc_dk.dk_openmask = 541 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 542 543 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 544 mutex_exit(&sd->sc_dk.dk_openlock); 545 return (0); 546 547 bad3: 548 if (sd->sc_dk.dk_openmask == 0) { 549 if (periph->periph_flags & PERIPH_REMOVABLE) 550 scsipi_prevent(periph, SPAMR_ALLOW, 551 XS_CTL_IGNORE_ILLEGAL_REQUEST | 552 XS_CTL_IGNORE_MEDIA_CHANGE | 553 XS_CTL_SILENT); 554 periph->periph_flags &= ~PERIPH_OPEN; 555 } 556 557 bad2: 558 if (sd->sc_dk.dk_openmask == 0) 559 scsipi_adapter_delref(adapt); 560 561 bad1: 562 mutex_exit(&sd->sc_dk.dk_openlock); 563 return (error); 564 } 565 566 /* 567 * Caller must hold sd->sc_dk.dk_openlock. 568 */ 569 static int 570 sdlastclose(device_t self) 571 { 572 struct sd_softc *sd = device_private(self); 573 struct scsipi_periph *periph = sd->sc_periph; 574 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 575 576 /* 577 * If the disk cache needs flushing, and the disk supports 578 * it, do it now. 579 */ 580 if ((sd->flags & SDF_DIRTY) != 0) { 581 if (sd_flush(sd, 0)) { 582 aprint_error_dev(sd->sc_dev, 583 "cache synchronization failed\n"); 584 sd->flags &= ~SDF_FLUSHING; 585 } else 586 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 587 } 588 589 scsipi_wait_drain(periph); 590 591 if (periph->periph_flags & PERIPH_REMOVABLE) 592 scsipi_prevent(periph, SPAMR_ALLOW, 593 XS_CTL_IGNORE_ILLEGAL_REQUEST | 594 XS_CTL_IGNORE_NOT_READY | 595 XS_CTL_SILENT); 596 periph->periph_flags &= ~PERIPH_OPEN; 597 598 scsipi_wait_drain(periph); 599 600 scsipi_adapter_delref(adapt); 601 602 return 0; 603 } 604 605 /* 606 * close the device.. only called if we are the LAST occurence of an open 607 * device. Convenient now but usually a pain. 608 */ 609 static int 610 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 611 { 612 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 613 int part = SDPART(dev); 614 615 mutex_enter(&sd->sc_dk.dk_openlock); 616 switch (fmt) { 617 case S_IFCHR: 618 sd->sc_dk.dk_copenmask &= ~(1 << part); 619 break; 620 case S_IFBLK: 621 sd->sc_dk.dk_bopenmask &= ~(1 << part); 622 break; 623 } 624 sd->sc_dk.dk_openmask = 625 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 626 627 if (sd->sc_dk.dk_openmask == 0) 628 sdlastclose(sd->sc_dev); 629 630 mutex_exit(&sd->sc_dk.dk_openlock); 631 return (0); 632 } 633 634 /* 635 * Actually translate the requested transfer into one the physical driver 636 * can understand. The transfer is described by a buf and will include 637 * only one physical transfer. 638 */ 639 static void 640 sdstrategy(struct buf *bp) 641 { 642 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 643 struct scsipi_periph *periph = sd->sc_periph; 644 struct disklabel *lp; 645 daddr_t blkno; 646 int s; 647 bool sector_aligned; 648 649 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 650 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 651 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 652 /* 653 * If the device has been made invalid, error out 654 */ 655 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 656 !device_is_active(sd->sc_dev)) { 657 if (periph->periph_flags & PERIPH_OPEN) 658 bp->b_error = EIO; 659 else 660 bp->b_error = ENODEV; 661 goto done; 662 } 663 664 lp = sd->sc_dk.dk_label; 665 666 /* 667 * The transfer must be a whole number of blocks, offset must not be 668 * negative. 669 */ 670 if (lp->d_secsize == DEV_BSIZE) { 671 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 672 } else { 673 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 674 } 675 if (!sector_aligned || bp->b_blkno < 0) { 676 bp->b_error = EINVAL; 677 goto done; 678 } 679 /* 680 * If it's a null transfer, return immediatly 681 */ 682 if (bp->b_bcount == 0) 683 goto done; 684 685 /* 686 * Do bounds checking, adjust transfer. if error, process. 687 * If end of partition, just return. 688 */ 689 if (SDPART(bp->b_dev) == RAW_PART) { 690 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 691 sd->params.disksize512) <= 0) 692 goto done; 693 } else { 694 if (bounds_check_with_label(&sd->sc_dk, bp, 695 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 696 goto done; 697 } 698 699 /* 700 * Now convert the block number to absolute and put it in 701 * terms of the device's logical block size. 702 */ 703 if (lp->d_secsize == DEV_BSIZE) 704 blkno = bp->b_blkno; 705 else if (lp->d_secsize > DEV_BSIZE) 706 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 707 else 708 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 709 710 if (SDPART(bp->b_dev) != RAW_PART) 711 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 712 713 bp->b_rawblkno = blkno; 714 715 s = splbio(); 716 717 /* 718 * Place it in the queue of disk activities for this disk. 719 * 720 * XXX Only do disksort() if the current operating mode does not 721 * XXX include tagged queueing. 722 */ 723 bufq_put(sd->buf_queue, bp); 724 725 /* 726 * Tell the device to get going on the transfer if it's 727 * not doing anything, otherwise just wait for completion 728 */ 729 sdstart(sd->sc_periph); 730 731 splx(s); 732 return; 733 734 done: 735 /* 736 * Correctly set the buf to indicate a completed xfer 737 */ 738 bp->b_resid = bp->b_bcount; 739 biodone(bp); 740 } 741 742 /* 743 * sdstart looks to see if there is a buf waiting for the device 744 * and that the device is not already busy. If both are true, 745 * It dequeues the buf and creates a scsi command to perform the 746 * transfer in the buf. The transfer request will call scsipi_done 747 * on completion, which will in turn call this routine again 748 * so that the next queued transfer is performed. 749 * The bufs are queued by the strategy routine (sdstrategy) 750 * 751 * This routine is also called after other non-queued requests 752 * have been made of the scsi driver, to ensure that the queue 753 * continues to be drained. 754 * 755 * must be called at the correct (highish) spl level 756 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 757 */ 758 static void 759 sdstart(struct scsipi_periph *periph) 760 { 761 struct sd_softc *sd = device_private(periph->periph_dev); 762 struct disklabel *lp = sd->sc_dk.dk_label; 763 struct buf *bp = 0; 764 struct scsipi_rw_16 cmd16; 765 struct scsipi_rw_10 cmd_big; 766 struct scsi_rw_6 cmd_small; 767 struct scsipi_generic *cmdp; 768 struct scsipi_xfer *xs; 769 int nblks, cmdlen, error, flags; 770 771 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 772 /* 773 * Check if the device has room for another command 774 */ 775 while (periph->periph_active < periph->periph_openings) { 776 /* 777 * there is excess capacity, but a special waits 778 * It'll need the adapter as soon as we clear out of the 779 * way and let it run (user level wait). 780 */ 781 if (periph->periph_flags & PERIPH_WAITING) { 782 periph->periph_flags &= ~PERIPH_WAITING; 783 wakeup((void *)periph); 784 return; 785 } 786 787 /* 788 * If the device has become invalid, abort all the 789 * reads and writes until all files have been closed and 790 * re-opened 791 */ 792 if (__predict_false( 793 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 794 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 795 bp->b_error = EIO; 796 bp->b_resid = bp->b_bcount; 797 biodone(bp); 798 continue; 799 } else { 800 return; 801 } 802 } 803 804 /* 805 * See if there is a buf with work for us to do.. 806 */ 807 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 808 return; 809 810 /* 811 * We have a buf, now we should make a command. 812 */ 813 814 if (lp->d_secsize == DEV_BSIZE) 815 nblks = bp->b_bcount >> DEV_BSHIFT; 816 else 817 nblks = howmany(bp->b_bcount, lp->d_secsize); 818 819 /* 820 * Fill out the scsi command. Use the smallest CDB possible 821 * (6-byte, 10-byte, or 16-byte). 822 */ 823 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 824 ((nblks & 0xff) == nblks) && 825 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 826 /* 6-byte CDB */ 827 memset(&cmd_small, 0, sizeof(cmd_small)); 828 cmd_small.opcode = (bp->b_flags & B_READ) ? 829 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 830 _lto3b(bp->b_rawblkno, cmd_small.addr); 831 cmd_small.length = nblks & 0xff; 832 cmdlen = sizeof(cmd_small); 833 cmdp = (struct scsipi_generic *)&cmd_small; 834 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 835 /* 10-byte CDB */ 836 memset(&cmd_big, 0, sizeof(cmd_big)); 837 cmd_big.opcode = (bp->b_flags & B_READ) ? 838 READ_10 : WRITE_10; 839 _lto4b(bp->b_rawblkno, cmd_big.addr); 840 _lto2b(nblks, cmd_big.length); 841 cmdlen = sizeof(cmd_big); 842 cmdp = (struct scsipi_generic *)&cmd_big; 843 } else { 844 /* 16-byte CDB */ 845 memset(&cmd16, 0, sizeof(cmd16)); 846 cmd16.opcode = (bp->b_flags & B_READ) ? 847 READ_16 : WRITE_16; 848 _lto8b(bp->b_rawblkno, cmd16.addr); 849 _lto4b(nblks, cmd16.length); 850 cmdlen = sizeof(cmd16); 851 cmdp = (struct scsipi_generic *)&cmd16; 852 } 853 854 /* Instrumentation. */ 855 disk_busy(&sd->sc_dk); 856 857 /* 858 * Mark the disk dirty so that the cache will be 859 * flushed on close. 860 */ 861 if ((bp->b_flags & B_READ) == 0) 862 sd->flags |= SDF_DIRTY; 863 864 /* 865 * Figure out what flags to use. 866 */ 867 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 868 if (bp->b_flags & B_READ) 869 flags |= XS_CTL_DATA_IN; 870 else 871 flags |= XS_CTL_DATA_OUT; 872 873 /* 874 * Call the routine that chats with the adapter. 875 * Note: we cannot sleep as we may be an interrupt 876 */ 877 xs = scsipi_make_xs(periph, cmdp, cmdlen, 878 (u_char *)bp->b_data, bp->b_bcount, 879 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 880 if (__predict_false(xs == NULL)) { 881 /* 882 * out of memory. Keep this buffer in the queue, and 883 * retry later. 884 */ 885 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 886 periph); 887 return; 888 } 889 /* 890 * need to dequeue the buffer before queuing the command, 891 * because cdstart may be called recursively from the 892 * HBA driver 893 */ 894 #ifdef DIAGNOSTIC 895 if (bufq_get(sd->buf_queue) != bp) 896 panic("sdstart(): dequeued wrong buf"); 897 #else 898 bufq_get(sd->buf_queue); 899 #endif 900 error = scsipi_execute_xs(xs); 901 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 902 KASSERT(error == 0); 903 } 904 } 905 906 static void 907 sdrestart(void *v) 908 { 909 int s = splbio(); 910 sdstart((struct scsipi_periph *)v); 911 splx(s); 912 } 913 914 static void 915 sddone(struct scsipi_xfer *xs, int error) 916 { 917 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 918 struct buf *bp = xs->bp; 919 920 if (sd->flags & SDF_FLUSHING) { 921 /* Flush completed, no longer dirty. */ 922 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 923 } 924 925 if (bp) { 926 bp->b_error = error; 927 bp->b_resid = xs->resid; 928 if (error) { 929 /* on a read/write error bp->b_resid is zero, so fix */ 930 bp->b_resid = bp->b_bcount; 931 } 932 933 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 934 (bp->b_flags & B_READ)); 935 #if NRND > 0 936 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 937 #endif 938 939 biodone(bp); 940 } 941 } 942 943 static void 944 sdminphys(struct buf *bp) 945 { 946 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 947 long xmax; 948 949 /* 950 * If the device is ancient, we want to make sure that 951 * the transfer fits into a 6-byte cdb. 952 * 953 * XXX Note that the SCSI-I spec says that 256-block transfers 954 * are allowed in a 6-byte read/write, and are specified 955 * by settng the "length" to 0. However, we're conservative 956 * here, allowing only 255-block transfers in case an 957 * ancient device gets confused by length == 0. A length of 0 958 * in a 10-byte read/write actually means 0 blocks. 959 */ 960 if ((sd->flags & SDF_ANCIENT) && 961 ((sd->sc_periph->periph_flags & 962 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 963 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 964 965 if (bp->b_bcount > xmax) 966 bp->b_bcount = xmax; 967 } 968 969 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 970 } 971 972 static int 973 sdread(dev_t dev, struct uio *uio, int ioflag) 974 { 975 976 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 977 } 978 979 static int 980 sdwrite(dev_t dev, struct uio *uio, int ioflag) 981 { 982 983 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 984 } 985 986 /* 987 * Perform special action on behalf of the user 988 * Knows about the internals of this device 989 */ 990 static int 991 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 992 { 993 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 994 struct scsipi_periph *periph = sd->sc_periph; 995 int part = SDPART(dev); 996 int error = 0; 997 int s; 998 #ifdef __HAVE_OLD_DISKLABEL 999 struct disklabel *newlabel = NULL; 1000 #endif 1001 1002 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1003 1004 /* 1005 * If the device is not valid, some IOCTLs can still be 1006 * handled on the raw partition. Check this here. 1007 */ 1008 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1009 switch (cmd) { 1010 case DIOCKLABEL: 1011 case DIOCWLABEL: 1012 case DIOCLOCK: 1013 case DIOCEJECT: 1014 case ODIOCEJECT: 1015 case DIOCGCACHE: 1016 case DIOCSCACHE: 1017 case DIOCGSTRATEGY: 1018 case DIOCSSTRATEGY: 1019 case SCIOCIDENTIFY: 1020 case OSCIOCIDENTIFY: 1021 case SCIOCCOMMAND: 1022 case SCIOCDEBUG: 1023 if (part == RAW_PART) 1024 break; 1025 /* FALLTHROUGH */ 1026 default: 1027 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1028 return (ENODEV); 1029 else 1030 return (EIO); 1031 } 1032 } 1033 1034 error = disk_ioctl(&sd->sc_dk, cmd, addr, flag, l); 1035 if (error != EPASSTHROUGH) 1036 return (error); 1037 1038 switch (cmd) { 1039 case DIOCGDINFO: 1040 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1041 return (0); 1042 1043 #ifdef __HAVE_OLD_DISKLABEL 1044 case ODIOCGDINFO: 1045 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1046 if (newlabel == NULL) 1047 return EIO; 1048 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1049 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1050 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1051 else 1052 error = ENOTTY; 1053 free(newlabel, M_TEMP); 1054 return error; 1055 #endif 1056 1057 case DIOCGPART: 1058 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1059 ((struct partinfo *)addr)->part = 1060 &sd->sc_dk.dk_label->d_partitions[part]; 1061 return (0); 1062 1063 case DIOCWDINFO: 1064 case DIOCSDINFO: 1065 #ifdef __HAVE_OLD_DISKLABEL 1066 case ODIOCWDINFO: 1067 case ODIOCSDINFO: 1068 #endif 1069 { 1070 struct disklabel *lp; 1071 1072 if ((flag & FWRITE) == 0) 1073 return (EBADF); 1074 1075 #ifdef __HAVE_OLD_DISKLABEL 1076 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1077 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1078 if (newlabel == NULL) 1079 return EIO; 1080 memset(newlabel, 0, sizeof newlabel); 1081 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1082 lp = newlabel; 1083 } else 1084 #endif 1085 lp = (struct disklabel *)addr; 1086 1087 mutex_enter(&sd->sc_dk.dk_openlock); 1088 sd->flags |= SDF_LABELLING; 1089 1090 error = setdisklabel(sd->sc_dk.dk_label, 1091 lp, /*sd->sc_dk.dk_openmask : */0, 1092 sd->sc_dk.dk_cpulabel); 1093 if (error == 0) { 1094 if (cmd == DIOCWDINFO 1095 #ifdef __HAVE_OLD_DISKLABEL 1096 || cmd == ODIOCWDINFO 1097 #endif 1098 ) 1099 error = writedisklabel(SDLABELDEV(dev), 1100 sdstrategy, sd->sc_dk.dk_label, 1101 sd->sc_dk.dk_cpulabel); 1102 } 1103 1104 sd->flags &= ~SDF_LABELLING; 1105 mutex_exit(&sd->sc_dk.dk_openlock); 1106 #ifdef __HAVE_OLD_DISKLABEL 1107 if (newlabel != NULL) 1108 free(newlabel, M_TEMP); 1109 #endif 1110 return (error); 1111 } 1112 1113 case DIOCKLABEL: 1114 if (*(int *)addr) 1115 periph->periph_flags |= PERIPH_KEEP_LABEL; 1116 else 1117 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1118 return (0); 1119 1120 case DIOCWLABEL: 1121 if ((flag & FWRITE) == 0) 1122 return (EBADF); 1123 if (*(int *)addr) 1124 sd->flags |= SDF_WLABEL; 1125 else 1126 sd->flags &= ~SDF_WLABEL; 1127 return (0); 1128 1129 case DIOCLOCK: 1130 if (periph->periph_flags & PERIPH_REMOVABLE) 1131 return (scsipi_prevent(periph, 1132 (*(int *)addr) ? 1133 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1134 else 1135 return (ENOTTY); 1136 1137 case DIOCEJECT: 1138 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1139 return (ENOTTY); 1140 if (*(int *)addr == 0) { 1141 /* 1142 * Don't force eject: check that we are the only 1143 * partition open. If so, unlock it. 1144 */ 1145 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1146 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1147 sd->sc_dk.dk_openmask) { 1148 error = scsipi_prevent(periph, SPAMR_ALLOW, 1149 XS_CTL_IGNORE_NOT_READY); 1150 if (error) 1151 return (error); 1152 } else { 1153 return (EBUSY); 1154 } 1155 } 1156 /* FALLTHROUGH */ 1157 case ODIOCEJECT: 1158 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1159 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1160 1161 case DIOCGDEFLABEL: 1162 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1163 return (0); 1164 1165 #ifdef __HAVE_OLD_DISKLABEL 1166 case ODIOCGDEFLABEL: 1167 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1168 if (newlabel == NULL) 1169 return EIO; 1170 sdgetdefaultlabel(sd, newlabel); 1171 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1172 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1173 else 1174 error = ENOTTY; 1175 free(newlabel, M_TEMP); 1176 return error; 1177 #endif 1178 1179 case DIOCGCACHE: 1180 return (sd_getcache(sd, (int *) addr)); 1181 1182 case DIOCSCACHE: 1183 if ((flag & FWRITE) == 0) 1184 return (EBADF); 1185 return (sd_setcache(sd, *(int *) addr)); 1186 1187 case DIOCCACHESYNC: 1188 /* 1189 * XXX Do we really need to care about having a writable 1190 * file descriptor here? 1191 */ 1192 if ((flag & FWRITE) == 0) 1193 return (EBADF); 1194 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1195 error = sd_flush(sd, 0); 1196 if (error) 1197 sd->flags &= ~SDF_FLUSHING; 1198 else 1199 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1200 } else 1201 error = 0; 1202 return (error); 1203 1204 case DIOCAWEDGE: 1205 { 1206 struct dkwedge_info *dkw = (void *) addr; 1207 1208 if ((flag & FWRITE) == 0) 1209 return (EBADF); 1210 1211 /* If the ioctl happens here, the parent is us. */ 1212 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1213 sizeof(dkw->dkw_parent)); 1214 return (dkwedge_add(dkw)); 1215 } 1216 1217 case DIOCDWEDGE: 1218 { 1219 struct dkwedge_info *dkw = (void *) addr; 1220 1221 if ((flag & FWRITE) == 0) 1222 return (EBADF); 1223 1224 /* If the ioctl happens here, the parent is us. */ 1225 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1226 sizeof(dkw->dkw_parent)); 1227 return (dkwedge_del(dkw)); 1228 } 1229 1230 case DIOCLWEDGES: 1231 { 1232 struct dkwedge_list *dkwl = (void *) addr; 1233 1234 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1235 } 1236 1237 case DIOCGSTRATEGY: 1238 { 1239 struct disk_strategy *dks = addr; 1240 1241 s = splbio(); 1242 strlcpy(dks->dks_name, bufq_getstrategyname(sd->buf_queue), 1243 sizeof(dks->dks_name)); 1244 splx(s); 1245 dks->dks_paramlen = 0; 1246 1247 return 0; 1248 } 1249 1250 case DIOCSSTRATEGY: 1251 { 1252 struct disk_strategy *dks = addr; 1253 struct bufq_state *new; 1254 struct bufq_state *old; 1255 1256 if ((flag & FWRITE) == 0) { 1257 return EBADF; 1258 } 1259 1260 if (dks->dks_param != NULL) { 1261 return EINVAL; 1262 } 1263 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1264 error = bufq_alloc(&new, dks->dks_name, 1265 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1266 if (error) { 1267 return error; 1268 } 1269 s = splbio(); 1270 old = sd->buf_queue; 1271 bufq_move(new, old); 1272 sd->buf_queue = new; 1273 splx(s); 1274 bufq_free(old); 1275 1276 return 0; 1277 } 1278 1279 default: 1280 if (part != RAW_PART) 1281 return (ENOTTY); 1282 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1283 } 1284 1285 #ifdef DIAGNOSTIC 1286 panic("sdioctl: impossible"); 1287 #endif 1288 } 1289 1290 static void 1291 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1292 { 1293 1294 memset(lp, 0, sizeof(struct disklabel)); 1295 1296 lp->d_secsize = sd->params.blksize; 1297 lp->d_ntracks = sd->params.heads; 1298 lp->d_nsectors = sd->params.sectors; 1299 lp->d_ncylinders = sd->params.cyls; 1300 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1301 1302 switch (scsipi_periph_bustype(sd->sc_periph)) { 1303 case SCSIPI_BUSTYPE_SCSI: 1304 lp->d_type = DTYPE_SCSI; 1305 break; 1306 case SCSIPI_BUSTYPE_ATAPI: 1307 lp->d_type = DTYPE_ATAPI; 1308 break; 1309 } 1310 /* 1311 * XXX 1312 * We could probe the mode pages to figure out what kind of disc it is. 1313 * Is this worthwhile? 1314 */ 1315 strncpy(lp->d_typename, sd->name, 16); 1316 strncpy(lp->d_packname, "fictitious", 16); 1317 lp->d_secperunit = sd->params.disksize; 1318 lp->d_rpm = sd->params.rot_rate; 1319 lp->d_interleave = 1; 1320 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1321 D_REMOVABLE : 0; 1322 1323 lp->d_partitions[RAW_PART].p_offset = 0; 1324 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1325 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1326 lp->d_npartitions = RAW_PART + 1; 1327 1328 lp->d_magic = DISKMAGIC; 1329 lp->d_magic2 = DISKMAGIC; 1330 lp->d_checksum = dkcksum(lp); 1331 } 1332 1333 1334 /* 1335 * Load the label information on the named device 1336 */ 1337 static int 1338 sdgetdisklabel(struct sd_softc *sd) 1339 { 1340 struct disklabel *lp = sd->sc_dk.dk_label; 1341 const char *errstring; 1342 1343 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1344 1345 sdgetdefaultlabel(sd, lp); 1346 1347 if (lp->d_secpercyl == 0) { 1348 lp->d_secpercyl = 100; 1349 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1350 } 1351 1352 /* 1353 * Call the generic disklabel extraction routine 1354 */ 1355 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1356 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1357 if (errstring) { 1358 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1359 return EIO; 1360 } 1361 return 0; 1362 } 1363 1364 static bool 1365 sd_shutdown(device_t self, int how) 1366 { 1367 struct sd_softc *sd = device_private(self); 1368 1369 /* 1370 * If the disk cache needs to be flushed, and the disk supports 1371 * it, flush it. We're cold at this point, so we poll for 1372 * completion. 1373 */ 1374 if ((sd->flags & SDF_DIRTY) != 0) { 1375 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1376 aprint_error_dev(sd->sc_dev, 1377 "cache synchronization failed\n"); 1378 sd->flags &= ~SDF_FLUSHING; 1379 } else 1380 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1381 } 1382 return true; 1383 } 1384 1385 static bool 1386 sd_suspend(device_t dv, const pmf_qual_t *qual) 1387 { 1388 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1389 } 1390 1391 /* 1392 * Check Errors 1393 */ 1394 static int 1395 sd_interpret_sense(struct scsipi_xfer *xs) 1396 { 1397 struct scsipi_periph *periph = xs->xs_periph; 1398 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1399 struct sd_softc *sd = device_private(periph->periph_dev); 1400 int s, error, retval = EJUSTRETURN; 1401 1402 /* 1403 * If the periph is already recovering, just do the normal 1404 * error processing. 1405 */ 1406 if (periph->periph_flags & PERIPH_RECOVERING) 1407 return (retval); 1408 1409 /* 1410 * Ignore errors from accessing illegal fields (e.g. trying to 1411 * lock the door of a digicam, which doesn't have a door that 1412 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1413 */ 1414 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1415 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1416 sense->asc == 0x24 && 1417 sense->ascq == 0x00) { /* Illegal field in CDB */ 1418 if (!(xs->xs_control & XS_CTL_SILENT)) { 1419 scsipi_printaddr(periph); 1420 printf("no door lock\n"); 1421 } 1422 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1423 return (retval); 1424 } 1425 1426 1427 1428 /* 1429 * If the device is not open yet, let the generic code handle it. 1430 */ 1431 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1432 return (retval); 1433 1434 /* 1435 * If it isn't a extended or extended/deferred error, let 1436 * the generic code handle it. 1437 */ 1438 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1439 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1440 return (retval); 1441 1442 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1443 sense->asc == 0x4) { 1444 if (sense->ascq == 0x01) { 1445 /* 1446 * Unit In The Process Of Becoming Ready. 1447 */ 1448 printf("%s: waiting for pack to spin up...\n", 1449 device_xname(sd->sc_dev)); 1450 if (!callout_pending(&periph->periph_callout)) 1451 scsipi_periph_freeze(periph, 1); 1452 callout_reset(&periph->periph_callout, 1453 5 * hz, scsipi_periph_timed_thaw, periph); 1454 retval = ERESTART; 1455 } else if (sense->ascq == 0x02) { 1456 printf("%s: pack is stopped, restarting...\n", 1457 device_xname(sd->sc_dev)); 1458 s = splbio(); 1459 periph->periph_flags |= PERIPH_RECOVERING; 1460 splx(s); 1461 error = scsipi_start(periph, SSS_START, 1462 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1463 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1464 if (error) { 1465 aprint_error_dev(sd->sc_dev, 1466 "unable to restart pack\n"); 1467 retval = error; 1468 } else 1469 retval = ERESTART; 1470 s = splbio(); 1471 periph->periph_flags &= ~PERIPH_RECOVERING; 1472 splx(s); 1473 } 1474 } 1475 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1476 sense->asc == 0x31 && 1477 sense->ascq == 0x00) { /* maybe for any asq ? */ 1478 /* Medium Format Corrupted */ 1479 retval = EFTYPE; 1480 } 1481 return (retval); 1482 } 1483 1484 1485 static int 1486 sdsize(dev_t dev) 1487 { 1488 struct sd_softc *sd; 1489 int part, unit, omask; 1490 int size; 1491 1492 unit = SDUNIT(dev); 1493 sd = device_lookup_private(&sd_cd, unit); 1494 if (sd == NULL) 1495 return (-1); 1496 1497 if (!device_is_active(sd->sc_dev)) 1498 return (-1); 1499 1500 part = SDPART(dev); 1501 omask = sd->sc_dk.dk_openmask & (1 << part); 1502 1503 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1504 return (-1); 1505 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1506 size = -1; 1507 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1508 size = -1; 1509 else 1510 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1511 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1512 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1513 return (-1); 1514 return (size); 1515 } 1516 1517 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1518 static struct scsipi_xfer sx; 1519 static int sddoingadump; 1520 1521 /* 1522 * dump all of physical memory into the partition specified, starting 1523 * at offset 'dumplo' into the partition. 1524 */ 1525 static int 1526 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1527 { 1528 struct sd_softc *sd; /* disk unit to do the I/O */ 1529 struct disklabel *lp; /* disk's disklabel */ 1530 int unit, part; 1531 int sectorsize; /* size of a disk sector */ 1532 int nsects; /* number of sectors in partition */ 1533 int sectoff; /* sector offset of partition */ 1534 int totwrt; /* total number of sectors left to write */ 1535 int nwrt; /* current number of sectors to write */ 1536 struct scsipi_rw_10 cmd; /* write command */ 1537 struct scsipi_xfer *xs; /* ... convenience */ 1538 struct scsipi_periph *periph; 1539 struct scsipi_channel *chan; 1540 1541 /* Check if recursive dump; if so, punt. */ 1542 if (sddoingadump) 1543 return (EFAULT); 1544 1545 /* Mark as active early. */ 1546 sddoingadump = 1; 1547 1548 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1549 part = SDPART(dev); 1550 1551 /* Check for acceptable drive number. */ 1552 sd = device_lookup_private(&sd_cd, unit); 1553 if (sd == NULL) 1554 return (ENXIO); 1555 1556 if (!device_is_active(sd->sc_dev)) 1557 return (ENODEV); 1558 1559 periph = sd->sc_periph; 1560 chan = periph->periph_channel; 1561 1562 /* Make sure it was initialized. */ 1563 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1564 return (ENXIO); 1565 1566 /* Convert to disk sectors. Request must be a multiple of size. */ 1567 lp = sd->sc_dk.dk_label; 1568 sectorsize = lp->d_secsize; 1569 if ((size % sectorsize) != 0) 1570 return (EFAULT); 1571 totwrt = size / sectorsize; 1572 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1573 1574 nsects = lp->d_partitions[part].p_size; 1575 sectoff = lp->d_partitions[part].p_offset; 1576 1577 /* Check transfer bounds against partition size. */ 1578 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1579 return (EINVAL); 1580 1581 /* Offset block number to start of partition. */ 1582 blkno += sectoff; 1583 1584 xs = &sx; 1585 1586 while (totwrt > 0) { 1587 nwrt = totwrt; /* XXX */ 1588 #ifndef SD_DUMP_NOT_TRUSTED 1589 /* 1590 * Fill out the scsi command 1591 */ 1592 memset(&cmd, 0, sizeof(cmd)); 1593 cmd.opcode = WRITE_10; 1594 _lto4b(blkno, cmd.addr); 1595 _lto2b(nwrt, cmd.length); 1596 /* 1597 * Fill out the scsipi_xfer structure 1598 * Note: we cannot sleep as we may be an interrupt 1599 * don't use scsipi_command() as it may want to wait 1600 * for an xs. 1601 */ 1602 memset(xs, 0, sizeof(sx)); 1603 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1604 XS_CTL_DATA_OUT; 1605 xs->xs_status = 0; 1606 xs->xs_periph = periph; 1607 xs->xs_retries = SDRETRIES; 1608 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1609 xs->cmd = (struct scsipi_generic *)&cmd; 1610 xs->cmdlen = sizeof(cmd); 1611 xs->resid = nwrt * sectorsize; 1612 xs->error = XS_NOERROR; 1613 xs->bp = 0; 1614 xs->data = va; 1615 xs->datalen = nwrt * sectorsize; 1616 callout_init(&xs->xs_callout, 0); 1617 1618 /* 1619 * Pass all this info to the scsi driver. 1620 */ 1621 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1622 if ((xs->xs_status & XS_STS_DONE) == 0 || 1623 xs->error != XS_NOERROR) 1624 return (EIO); 1625 #else /* SD_DUMP_NOT_TRUSTED */ 1626 /* Let's just talk about this first... */ 1627 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1628 delay(500 * 1000); /* half a second */ 1629 #endif /* SD_DUMP_NOT_TRUSTED */ 1630 1631 /* update block count */ 1632 totwrt -= nwrt; 1633 blkno += nwrt; 1634 va = (char *)va + sectorsize * nwrt; 1635 } 1636 sddoingadump = 0; 1637 return (0); 1638 } 1639 1640 static int 1641 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1642 int page, int flags, int *big) 1643 { 1644 1645 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1646 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1647 *big = 1; 1648 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1649 size + sizeof(struct scsi_mode_parameter_header_10), 1650 flags, SDRETRIES, 6000); 1651 } else { 1652 *big = 0; 1653 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1654 size + sizeof(struct scsi_mode_parameter_header_6), 1655 flags, SDRETRIES, 6000); 1656 } 1657 } 1658 1659 static int 1660 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1661 int flags, int big) 1662 { 1663 1664 if (big) { 1665 struct scsi_mode_parameter_header_10 *header = sense; 1666 1667 _lto2b(0, header->data_length); 1668 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1669 size + sizeof(struct scsi_mode_parameter_header_10), 1670 flags, SDRETRIES, 6000); 1671 } else { 1672 struct scsi_mode_parameter_header_6 *header = sense; 1673 1674 header->data_length = 0; 1675 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1676 size + sizeof(struct scsi_mode_parameter_header_6), 1677 flags, SDRETRIES, 6000); 1678 } 1679 } 1680 1681 /* 1682 * sd_validate_blksize: 1683 * 1684 * Validate the block size. Print error if periph is specified, 1685 */ 1686 static int 1687 sd_validate_blksize(struct scsipi_periph *periph, int len) 1688 { 1689 1690 switch (len) { 1691 case 256: 1692 case 512: 1693 case 1024: 1694 case 2048: 1695 case 4096: 1696 return 1; 1697 } 1698 1699 if (periph) { 1700 scsipi_printaddr(periph); 1701 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1702 (len ^ (1 << (ffs(len) - 1))) ? 1703 "preposterous" : "unsupported", 1704 len, SD_DEFAULT_BLKSIZE); 1705 } 1706 1707 return 0; 1708 } 1709 1710 /* 1711 * sd_read_capacity: 1712 * 1713 * Find out from the device what its capacity is. 1714 */ 1715 static u_int64_t 1716 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1717 { 1718 union { 1719 struct scsipi_read_capacity_10 cmd; 1720 struct scsipi_read_capacity_16 cmd16; 1721 } cmd; 1722 union { 1723 struct scsipi_read_capacity_10_data data; 1724 struct scsipi_read_capacity_16_data data16; 1725 } *datap; 1726 uint64_t rv; 1727 1728 memset(&cmd, 0, sizeof(cmd)); 1729 cmd.cmd.opcode = READ_CAPACITY_10; 1730 1731 /* 1732 * Don't allocate data buffer on stack; 1733 * The lower driver layer might use the same stack and 1734 * if it uses region which is in the same cacheline, 1735 * cache flush ops against the data buffer won't work properly. 1736 */ 1737 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1738 if (datap == NULL) 1739 return 0; 1740 1741 /* 1742 * If the command works, interpret the result as a 4 byte 1743 * number of blocks 1744 */ 1745 rv = 0; 1746 memset(datap, 0, sizeof(datap->data)); 1747 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1748 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1749 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1750 goto out; 1751 1752 if (_4btol(datap->data.addr) != 0xffffffff) { 1753 *blksize = _4btol(datap->data.length); 1754 rv = _4btol(datap->data.addr) + 1; 1755 goto out; 1756 } 1757 1758 /* 1759 * Device is larger than can be reflected by READ CAPACITY (10). 1760 * Try READ CAPACITY (16). 1761 */ 1762 1763 memset(&cmd, 0, sizeof(cmd)); 1764 cmd.cmd16.opcode = READ_CAPACITY_16; 1765 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1766 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1767 1768 memset(datap, 0, sizeof(datap->data16)); 1769 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1770 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1771 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1772 goto out; 1773 1774 *blksize = _4btol(datap->data16.length); 1775 rv = _8btol(datap->data16.addr) + 1; 1776 1777 out: 1778 free(datap, M_TEMP); 1779 return rv; 1780 } 1781 1782 static int 1783 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1784 { 1785 struct { 1786 struct scsi_mode_parameter_header_6 header; 1787 /* no block descriptor */ 1788 u_int8_t pg_code; /* page code (should be 6) */ 1789 u_int8_t pg_length; /* page length (should be 11) */ 1790 u_int8_t wcd; /* bit0: cache disable */ 1791 u_int8_t lbs[2]; /* logical block size */ 1792 u_int8_t size[5]; /* number of log. blocks */ 1793 u_int8_t pp; /* power/performance */ 1794 u_int8_t flags; 1795 u_int8_t resvd; 1796 } scsipi_sense; 1797 u_int64_t blocks; 1798 int error, blksize; 1799 1800 /* 1801 * sd_read_capacity (ie "read capacity") and mode sense page 6 1802 * give the same information. Do both for now, and check 1803 * for consistency. 1804 * XXX probably differs for removable media 1805 */ 1806 dp->blksize = SD_DEFAULT_BLKSIZE; 1807 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1808 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1809 1810 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1811 &scsipi_sense.header, sizeof(scsipi_sense), 1812 flags, SDRETRIES, 6000); 1813 1814 if (error != 0) 1815 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1816 1817 dp->blksize = blksize; 1818 if (!sd_validate_blksize(NULL, dp->blksize)) 1819 dp->blksize = _2btol(scsipi_sense.lbs); 1820 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1821 dp->blksize = SD_DEFAULT_BLKSIZE; 1822 1823 /* 1824 * Create a pseudo-geometry. 1825 */ 1826 dp->heads = 64; 1827 dp->sectors = 32; 1828 dp->cyls = blocks / (dp->heads * dp->sectors); 1829 dp->disksize = _5btol(scsipi_sense.size); 1830 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1831 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1832 (unsigned long long)dp->disksize, 1833 (unsigned long long)blocks); 1834 dp->disksize = blocks; 1835 } 1836 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1837 1838 return (SDGP_RESULT_OK); 1839 } 1840 1841 /* 1842 * Get the scsi driver to send a full inquiry to the * device and use the 1843 * results to fill out the disk parameter structure. 1844 */ 1845 static int 1846 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1847 { 1848 u_int64_t blocks; 1849 int error, blksize; 1850 #if 0 1851 int i; 1852 u_int8_t *p; 1853 #endif 1854 1855 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1856 flags); 1857 if (blocks == 0) { 1858 struct scsipi_read_format_capacities cmd; 1859 struct { 1860 struct scsipi_capacity_list_header header; 1861 struct scsipi_capacity_descriptor desc; 1862 } __packed data; 1863 1864 memset(&cmd, 0, sizeof(cmd)); 1865 memset(&data, 0, sizeof(data)); 1866 cmd.opcode = READ_FORMAT_CAPACITIES; 1867 _lto2b(sizeof(data), cmd.length); 1868 1869 error = scsipi_command(sd->sc_periph, 1870 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1871 SDRETRIES, 20000, NULL, 1872 flags | XS_CTL_DATA_IN); 1873 if (error == EFTYPE) { 1874 /* Medium Format Corrupted, handle as not formatted */ 1875 return (SDGP_RESULT_UNFORMATTED); 1876 } 1877 if (error || data.header.length == 0) 1878 return (SDGP_RESULT_OFFLINE); 1879 1880 #if 0 1881 printf("rfc: length=%d\n", data.header.length); 1882 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"); 1883 #endif 1884 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1885 case SCSIPI_CAP_DESC_CODE_RESERVED: 1886 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1887 break; 1888 1889 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1890 return (SDGP_RESULT_UNFORMATTED); 1891 1892 case SCSIPI_CAP_DESC_CODE_NONE: 1893 return (SDGP_RESULT_OFFLINE); 1894 } 1895 1896 dp->disksize = blocks = _4btol(data.desc.nblks); 1897 if (blocks == 0) 1898 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1899 1900 blksize = _3btol(data.desc.blklen); 1901 1902 } else if (!sd_validate_blksize(NULL, blksize)) { 1903 struct sd_mode_sense_data scsipi_sense; 1904 int big, bsize; 1905 struct scsi_general_block_descriptor *bdesc; 1906 1907 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1908 error = sd_mode_sense(sd, 0, &scsipi_sense, 1909 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1910 if (!error) { 1911 if (big) { 1912 bdesc = (void *)(&scsipi_sense.header.big + 1); 1913 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1914 } else { 1915 bdesc = (void *)(&scsipi_sense.header.small + 1); 1916 bsize = scsipi_sense.header.small.blk_desc_len; 1917 } 1918 1919 #if 0 1920 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1921 printf("page 0 bsize=%d\n", bsize); 1922 printf("page 0 ok\n"); 1923 #endif 1924 1925 if (bsize >= 8) { 1926 blksize = _3btol(bdesc->blklen); 1927 } 1928 } 1929 } 1930 1931 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1932 blksize = SD_DEFAULT_BLKSIZE; 1933 1934 dp->blksize = blksize; 1935 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1936 return (0); 1937 } 1938 1939 static int 1940 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1941 { 1942 struct sd_mode_sense_data scsipi_sense; 1943 int error; 1944 int big, byte2; 1945 size_t poffset; 1946 union scsi_disk_pages *pages; 1947 1948 byte2 = SMS_DBD; 1949 again: 1950 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1951 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1952 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1953 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1954 flags | XS_CTL_SILENT, &big); 1955 if (error) { 1956 if (byte2 == SMS_DBD) { 1957 /* No result; try once more with DBD off */ 1958 byte2 = 0; 1959 goto again; 1960 } 1961 return (error); 1962 } 1963 1964 if (big) { 1965 poffset = sizeof scsipi_sense.header.big; 1966 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1967 } else { 1968 poffset = sizeof scsipi_sense.header.small; 1969 poffset += scsipi_sense.header.small.blk_desc_len; 1970 } 1971 1972 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1973 return ERESTART; 1974 1975 pages = (void *)((u_long)&scsipi_sense + poffset); 1976 #if 0 1977 { 1978 size_t i; 1979 u_int8_t *p; 1980 1981 printf("page 4 sense:"); 1982 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1983 i--, p++) 1984 printf(" %02x", *p); 1985 printf("\n"); 1986 printf("page 4 pg_code=%d sense=%p/%p\n", 1987 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1988 } 1989 #endif 1990 1991 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1992 return (ERESTART); 1993 1994 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1995 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1996 _3btol(pages->rigid_geometry.ncyl), 1997 pages->rigid_geometry.nheads, 1998 _2btol(pages->rigid_geometry.st_cyl_wp), 1999 _2btol(pages->rigid_geometry.st_cyl_rwc), 2000 _2btol(pages->rigid_geometry.land_zone))); 2001 2002 /* 2003 * KLUDGE!! (for zone recorded disks) 2004 * give a number of sectors so that sec * trks * cyls 2005 * is <= disk_size 2006 * can lead to wasted space! THINK ABOUT THIS ! 2007 */ 2008 dp->heads = pages->rigid_geometry.nheads; 2009 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 2010 if (dp->heads == 0 || dp->cyls == 0) 2011 return (ERESTART); 2012 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 2013 2014 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2015 if (dp->rot_rate == 0) 2016 dp->rot_rate = 3600; 2017 2018 #if 0 2019 printf("page 4 ok\n"); 2020 #endif 2021 return (0); 2022 } 2023 2024 static int 2025 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 2026 { 2027 struct sd_mode_sense_data scsipi_sense; 2028 int error; 2029 int big, byte2; 2030 size_t poffset; 2031 union scsi_disk_pages *pages; 2032 2033 byte2 = SMS_DBD; 2034 again: 2035 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2036 error = sd_mode_sense(sd, 0, &scsipi_sense, 2037 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2038 sizeof(scsipi_sense.pages.flex_geometry), 5, 2039 flags | XS_CTL_SILENT, &big); 2040 if (error) { 2041 if (byte2 == SMS_DBD) { 2042 /* No result; try once more with DBD off */ 2043 byte2 = 0; 2044 goto again; 2045 } 2046 return (error); 2047 } 2048 2049 if (big) { 2050 poffset = sizeof scsipi_sense.header.big; 2051 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2052 } else { 2053 poffset = sizeof scsipi_sense.header.small; 2054 poffset += scsipi_sense.header.small.blk_desc_len; 2055 } 2056 2057 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2058 return ERESTART; 2059 2060 pages = (void *)((u_long)&scsipi_sense + poffset); 2061 #if 0 2062 { 2063 size_t i; 2064 u_int8_t *p; 2065 2066 printf("page 5 sense:"); 2067 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2068 i--, p++) 2069 printf(" %02x", *p); 2070 printf("\n"); 2071 printf("page 5 pg_code=%d sense=%p/%p\n", 2072 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2073 } 2074 #endif 2075 2076 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2077 return (ERESTART); 2078 2079 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2080 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2081 _3btol(pages->flex_geometry.ncyl), 2082 pages->flex_geometry.nheads, 2083 pages->flex_geometry.ph_sec_tr, 2084 _2btol(pages->flex_geometry.bytes_s))); 2085 2086 dp->heads = pages->flex_geometry.nheads; 2087 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2088 dp->sectors = pages->flex_geometry.ph_sec_tr; 2089 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2090 return (ERESTART); 2091 2092 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2093 if (dp->rot_rate == 0) 2094 dp->rot_rate = 3600; 2095 2096 #if 0 2097 printf("page 5 ok\n"); 2098 #endif 2099 return (0); 2100 } 2101 2102 static int 2103 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2104 { 2105 int error; 2106 2107 /* 2108 * If offline, the SDEV_MEDIA_LOADED flag will be 2109 * cleared by the caller if necessary. 2110 */ 2111 if (sd->type == T_SIMPLE_DIRECT) { 2112 error = sd_get_simplifiedparms(sd, dp, flags); 2113 if (!error) 2114 disk_blocksize(&sd->sc_dk, dp->blksize); 2115 return (error); 2116 } 2117 2118 error = sd_get_capacity(sd, dp, flags); 2119 if (error) 2120 return (error); 2121 2122 disk_blocksize(&sd->sc_dk, dp->blksize); 2123 2124 if (sd->type == T_OPTICAL) 2125 goto page0; 2126 2127 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2128 if (!sd_get_parms_page5(sd, dp, flags) || 2129 !sd_get_parms_page4(sd, dp, flags)) 2130 goto setprops; 2131 } else { 2132 if (!sd_get_parms_page4(sd, dp, flags) || 2133 !sd_get_parms_page5(sd, dp, flags)) 2134 goto setprops; 2135 } 2136 2137 page0: 2138 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2139 /* Try calling driver's method for figuring out geometry. */ 2140 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2141 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2142 (sd->sc_periph, dp, dp->disksize)) { 2143 /* 2144 * Use adaptec standard fictitious geometry 2145 * this depends on which controller (e.g. 1542C is 2146 * different. but we have to put SOMETHING here..) 2147 */ 2148 dp->heads = 64; 2149 dp->sectors = 32; 2150 dp->cyls = dp->disksize / (64 * 32); 2151 } 2152 dp->rot_rate = 3600; 2153 2154 setprops: 2155 sd_set_properties(sd); 2156 2157 return (SDGP_RESULT_OK); 2158 } 2159 2160 static int 2161 sd_flush(struct sd_softc *sd, int flags) 2162 { 2163 struct scsipi_periph *periph = sd->sc_periph; 2164 struct scsi_synchronize_cache_10 cmd; 2165 2166 /* 2167 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2168 * We issue with address 0 length 0, which should be 2169 * interpreted by the device as "all remaining blocks 2170 * starting at address 0". We ignore ILLEGAL REQUEST 2171 * in the event that the command is not supported by 2172 * the device, and poll for completion so that we know 2173 * that the cache has actually been flushed. 2174 * 2175 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2176 * command, as indicated by our quirks flags. 2177 * 2178 * XXX What about older devices? 2179 */ 2180 if (periph->periph_version < 2 || 2181 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2182 return (0); 2183 2184 sd->flags |= SDF_FLUSHING; 2185 memset(&cmd, 0, sizeof(cmd)); 2186 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2187 2188 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2189 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2190 } 2191 2192 static int 2193 sd_getcache(struct sd_softc *sd, int *bitsp) 2194 { 2195 struct scsipi_periph *periph = sd->sc_periph; 2196 struct sd_mode_sense_data scsipi_sense; 2197 int error, bits = 0; 2198 int big; 2199 union scsi_disk_pages *pages; 2200 2201 if (periph->periph_version < 2) 2202 return (EOPNOTSUPP); 2203 2204 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2205 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2206 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2207 if (error) 2208 return (error); 2209 2210 if (big) 2211 pages = (void *)(&scsipi_sense.header.big + 1); 2212 else 2213 pages = (void *)(&scsipi_sense.header.small + 1); 2214 2215 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2216 bits |= DKCACHE_READ; 2217 if (pages->caching_params.flags & CACHING_WCE) 2218 bits |= DKCACHE_WRITE; 2219 if (pages->caching_params.pg_code & PGCODE_PS) 2220 bits |= DKCACHE_SAVE; 2221 2222 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2223 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2224 sizeof(scsipi_sense.pages.caching_params), 2225 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2226 if (error == 0) { 2227 if (big) 2228 pages = (void *)(&scsipi_sense.header.big + 1); 2229 else 2230 pages = (void *)(&scsipi_sense.header.small + 1); 2231 2232 if (pages->caching_params.flags & CACHING_RCD) 2233 bits |= DKCACHE_RCHANGE; 2234 if (pages->caching_params.flags & CACHING_WCE) 2235 bits |= DKCACHE_WCHANGE; 2236 } 2237 2238 *bitsp = bits; 2239 2240 return (0); 2241 } 2242 2243 static int 2244 sd_setcache(struct sd_softc *sd, int bits) 2245 { 2246 struct scsipi_periph *periph = sd->sc_periph; 2247 struct sd_mode_sense_data scsipi_sense; 2248 int error; 2249 uint8_t oflags, byte2 = 0; 2250 int big; 2251 union scsi_disk_pages *pages; 2252 2253 if (periph->periph_version < 2) 2254 return (EOPNOTSUPP); 2255 2256 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2257 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2258 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2259 if (error) 2260 return (error); 2261 2262 if (big) 2263 pages = (void *)(&scsipi_sense.header.big + 1); 2264 else 2265 pages = (void *)(&scsipi_sense.header.small + 1); 2266 2267 oflags = pages->caching_params.flags; 2268 2269 if (bits & DKCACHE_READ) 2270 pages->caching_params.flags &= ~CACHING_RCD; 2271 else 2272 pages->caching_params.flags |= CACHING_RCD; 2273 2274 if (bits & DKCACHE_WRITE) 2275 pages->caching_params.flags |= CACHING_WCE; 2276 else 2277 pages->caching_params.flags &= ~CACHING_WCE; 2278 2279 if (oflags == pages->caching_params.flags) 2280 return (0); 2281 2282 pages->caching_params.pg_code &= PGCODE_MASK; 2283 2284 if (bits & DKCACHE_SAVE) 2285 byte2 |= SMS_SP; 2286 2287 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2288 sizeof(struct scsi_mode_page_header) + 2289 pages->caching_params.pg_length, 0, big)); 2290 } 2291 2292 static void 2293 sd_set_properties(struct sd_softc *sd) 2294 { 2295 prop_dictionary_t disk_info, odisk_info, geom; 2296 2297 disk_info = prop_dictionary_create(); 2298 2299 geom = prop_dictionary_create(); 2300 2301 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2302 sd->params.disksize); 2303 2304 prop_dictionary_set_uint32(geom, "sector-size", 2305 sd->params.blksize); 2306 2307 prop_dictionary_set_uint16(geom, "sectors-per-track", 2308 sd->params.sectors); 2309 2310 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2311 sd->params.heads); 2312 2313 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2314 sd->params.cyls); 2315 2316 prop_dictionary_set(disk_info, "geometry", geom); 2317 prop_object_release(geom); 2318 2319 prop_dictionary_set(device_properties(sd->sc_dev), 2320 "disk-info", disk_info); 2321 2322 /* 2323 * Don't release disk_info here; we keep a reference to it. 2324 * disk_detach() will release it when we go away. 2325 */ 2326 2327 odisk_info = sd->sc_dk.dk_info; 2328 sd->sc_dk.dk_info = disk_info; 2329 if (odisk_info) 2330 prop_object_release(odisk_info); 2331 } 2332