1 /* $NetBSD: sd.c,v 1.289 2009/08/03 09:40:45 jnemeth 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 1.289 2009/08/03 09:40:45 jnemeth 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 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 #ifdef __HAVE_OLD_DISKLABEL 998 struct disklabel *newlabel = NULL; 999 #endif 1000 1001 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1002 1003 /* 1004 * If the device is not valid, some IOCTLs can still be 1005 * handled on the raw partition. Check this here. 1006 */ 1007 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1008 switch (cmd) { 1009 case DIOCKLABEL: 1010 case DIOCWLABEL: 1011 case DIOCLOCK: 1012 case DIOCEJECT: 1013 case ODIOCEJECT: 1014 case DIOCGCACHE: 1015 case DIOCSCACHE: 1016 case SCIOCIDENTIFY: 1017 case OSCIOCIDENTIFY: 1018 case SCIOCCOMMAND: 1019 case SCIOCDEBUG: 1020 if (part == RAW_PART) 1021 break; 1022 /* FALLTHROUGH */ 1023 default: 1024 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1025 return (ENODEV); 1026 else 1027 return (EIO); 1028 } 1029 } 1030 1031 error = disk_ioctl(&sd->sc_dk, cmd, addr, flag, l); 1032 if (error != EPASSTHROUGH) 1033 return (error); 1034 1035 switch (cmd) { 1036 case DIOCGDINFO: 1037 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1038 return (0); 1039 1040 #ifdef __HAVE_OLD_DISKLABEL 1041 case ODIOCGDINFO: 1042 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1043 if (newlabel == NULL) 1044 return EIO; 1045 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1046 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1047 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1048 else 1049 error = ENOTTY; 1050 free(newlabel, M_TEMP); 1051 return error; 1052 #endif 1053 1054 case DIOCGPART: 1055 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1056 ((struct partinfo *)addr)->part = 1057 &sd->sc_dk.dk_label->d_partitions[part]; 1058 return (0); 1059 1060 case DIOCWDINFO: 1061 case DIOCSDINFO: 1062 #ifdef __HAVE_OLD_DISKLABEL 1063 case ODIOCWDINFO: 1064 case ODIOCSDINFO: 1065 #endif 1066 { 1067 struct disklabel *lp; 1068 1069 if ((flag & FWRITE) == 0) 1070 return (EBADF); 1071 1072 #ifdef __HAVE_OLD_DISKLABEL 1073 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1074 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1075 if (newlabel == NULL) 1076 return EIO; 1077 memset(newlabel, 0, sizeof newlabel); 1078 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1079 lp = newlabel; 1080 } else 1081 #endif 1082 lp = (struct disklabel *)addr; 1083 1084 mutex_enter(&sd->sc_dk.dk_openlock); 1085 sd->flags |= SDF_LABELLING; 1086 1087 error = setdisklabel(sd->sc_dk.dk_label, 1088 lp, /*sd->sc_dk.dk_openmask : */0, 1089 sd->sc_dk.dk_cpulabel); 1090 if (error == 0) { 1091 if (cmd == DIOCWDINFO 1092 #ifdef __HAVE_OLD_DISKLABEL 1093 || cmd == ODIOCWDINFO 1094 #endif 1095 ) 1096 error = writedisklabel(SDLABELDEV(dev), 1097 sdstrategy, sd->sc_dk.dk_label, 1098 sd->sc_dk.dk_cpulabel); 1099 } 1100 1101 sd->flags &= ~SDF_LABELLING; 1102 mutex_exit(&sd->sc_dk.dk_openlock); 1103 #ifdef __HAVE_OLD_DISKLABEL 1104 if (newlabel != NULL) 1105 free(newlabel, M_TEMP); 1106 #endif 1107 return (error); 1108 } 1109 1110 case DIOCKLABEL: 1111 if (*(int *)addr) 1112 periph->periph_flags |= PERIPH_KEEP_LABEL; 1113 else 1114 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1115 return (0); 1116 1117 case DIOCWLABEL: 1118 if ((flag & FWRITE) == 0) 1119 return (EBADF); 1120 if (*(int *)addr) 1121 sd->flags |= SDF_WLABEL; 1122 else 1123 sd->flags &= ~SDF_WLABEL; 1124 return (0); 1125 1126 case DIOCLOCK: 1127 if (periph->periph_flags & PERIPH_REMOVABLE) 1128 return (scsipi_prevent(periph, 1129 (*(int *)addr) ? 1130 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1131 else 1132 return (ENOTTY); 1133 1134 case DIOCEJECT: 1135 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1136 return (ENOTTY); 1137 if (*(int *)addr == 0) { 1138 /* 1139 * Don't force eject: check that we are the only 1140 * partition open. If so, unlock it. 1141 */ 1142 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1143 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1144 sd->sc_dk.dk_openmask) { 1145 error = scsipi_prevent(periph, SPAMR_ALLOW, 1146 XS_CTL_IGNORE_NOT_READY); 1147 if (error) 1148 return (error); 1149 } else { 1150 return (EBUSY); 1151 } 1152 } 1153 /* FALLTHROUGH */ 1154 case ODIOCEJECT: 1155 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1156 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1157 1158 case DIOCGDEFLABEL: 1159 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1160 return (0); 1161 1162 #ifdef __HAVE_OLD_DISKLABEL 1163 case ODIOCGDEFLABEL: 1164 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1165 if (newlabel == NULL) 1166 return EIO; 1167 sdgetdefaultlabel(sd, newlabel); 1168 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1169 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1170 else 1171 error = ENOTTY; 1172 free(newlabel, M_TEMP); 1173 return error; 1174 #endif 1175 1176 case DIOCGCACHE: 1177 return (sd_getcache(sd, (int *) addr)); 1178 1179 case DIOCSCACHE: 1180 if ((flag & FWRITE) == 0) 1181 return (EBADF); 1182 return (sd_setcache(sd, *(int *) addr)); 1183 1184 case DIOCCACHESYNC: 1185 /* 1186 * XXX Do we really need to care about having a writable 1187 * file descriptor here? 1188 */ 1189 if ((flag & FWRITE) == 0) 1190 return (EBADF); 1191 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1192 error = sd_flush(sd, 0); 1193 if (error) 1194 sd->flags &= ~SDF_FLUSHING; 1195 else 1196 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1197 } else 1198 error = 0; 1199 return (error); 1200 1201 case DIOCAWEDGE: 1202 { 1203 struct dkwedge_info *dkw = (void *) addr; 1204 1205 if ((flag & FWRITE) == 0) 1206 return (EBADF); 1207 1208 /* If the ioctl happens here, the parent is us. */ 1209 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1210 sizeof(dkw->dkw_parent)); 1211 return (dkwedge_add(dkw)); 1212 } 1213 1214 case DIOCDWEDGE: 1215 { 1216 struct dkwedge_info *dkw = (void *) addr; 1217 1218 if ((flag & FWRITE) == 0) 1219 return (EBADF); 1220 1221 /* If the ioctl happens here, the parent is us. */ 1222 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1223 sizeof(dkw->dkw_parent)); 1224 return (dkwedge_del(dkw)); 1225 } 1226 1227 case DIOCLWEDGES: 1228 { 1229 struct dkwedge_list *dkwl = (void *) addr; 1230 1231 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1232 } 1233 1234 default: 1235 if (part != RAW_PART) 1236 return (ENOTTY); 1237 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1238 } 1239 1240 #ifdef DIAGNOSTIC 1241 panic("sdioctl: impossible"); 1242 #endif 1243 } 1244 1245 static void 1246 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1247 { 1248 1249 memset(lp, 0, sizeof(struct disklabel)); 1250 1251 lp->d_secsize = sd->params.blksize; 1252 lp->d_ntracks = sd->params.heads; 1253 lp->d_nsectors = sd->params.sectors; 1254 lp->d_ncylinders = sd->params.cyls; 1255 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1256 1257 switch (scsipi_periph_bustype(sd->sc_periph)) { 1258 case SCSIPI_BUSTYPE_SCSI: 1259 lp->d_type = DTYPE_SCSI; 1260 break; 1261 case SCSIPI_BUSTYPE_ATAPI: 1262 lp->d_type = DTYPE_ATAPI; 1263 break; 1264 } 1265 /* 1266 * XXX 1267 * We could probe the mode pages to figure out what kind of disc it is. 1268 * Is this worthwhile? 1269 */ 1270 strncpy(lp->d_typename, sd->name, 16); 1271 strncpy(lp->d_packname, "fictitious", 16); 1272 lp->d_secperunit = sd->params.disksize; 1273 lp->d_rpm = sd->params.rot_rate; 1274 lp->d_interleave = 1; 1275 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1276 D_REMOVABLE : 0; 1277 1278 lp->d_partitions[RAW_PART].p_offset = 0; 1279 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1280 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1281 lp->d_npartitions = RAW_PART + 1; 1282 1283 lp->d_magic = DISKMAGIC; 1284 lp->d_magic2 = DISKMAGIC; 1285 lp->d_checksum = dkcksum(lp); 1286 } 1287 1288 1289 /* 1290 * Load the label information on the named device 1291 */ 1292 static int 1293 sdgetdisklabel(struct sd_softc *sd) 1294 { 1295 struct disklabel *lp = sd->sc_dk.dk_label; 1296 const char *errstring; 1297 1298 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1299 1300 sdgetdefaultlabel(sd, lp); 1301 1302 if (lp->d_secpercyl == 0) { 1303 lp->d_secpercyl = 100; 1304 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1305 } 1306 1307 /* 1308 * Call the generic disklabel extraction routine 1309 */ 1310 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1311 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1312 if (errstring) { 1313 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1314 return EIO; 1315 } 1316 return 0; 1317 } 1318 1319 static bool 1320 sd_shutdown(device_t self, int how) 1321 { 1322 struct sd_softc *sd = device_private(self); 1323 1324 /* 1325 * If the disk cache needs to be flushed, and the disk supports 1326 * it, flush it. We're cold at this point, so we poll for 1327 * completion. 1328 */ 1329 if ((sd->flags & SDF_DIRTY) != 0) { 1330 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1331 aprint_error_dev(sd->sc_dev, 1332 "cache synchronization failed\n"); 1333 sd->flags &= ~SDF_FLUSHING; 1334 } else 1335 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1336 } 1337 return true; 1338 } 1339 1340 static bool 1341 sd_suspend(device_t dv PMF_FN_ARGS) 1342 { 1343 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1344 } 1345 1346 /* 1347 * Check Errors 1348 */ 1349 static int 1350 sd_interpret_sense(struct scsipi_xfer *xs) 1351 { 1352 struct scsipi_periph *periph = xs->xs_periph; 1353 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1354 struct sd_softc *sd = device_private(periph->periph_dev); 1355 int s, error, retval = EJUSTRETURN; 1356 1357 /* 1358 * If the periph is already recovering, just do the normal 1359 * error processing. 1360 */ 1361 if (periph->periph_flags & PERIPH_RECOVERING) 1362 return (retval); 1363 1364 /* 1365 * Ignore errors from accessing illegal fields (e.g. trying to 1366 * lock the door of a digicam, which doesn't have a door that 1367 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1368 */ 1369 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1370 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1371 sense->asc == 0x24 && 1372 sense->ascq == 0x00) { /* Illegal field in CDB */ 1373 if (!(xs->xs_control & XS_CTL_SILENT)) { 1374 scsipi_printaddr(periph); 1375 printf("no door lock\n"); 1376 } 1377 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1378 return (retval); 1379 } 1380 1381 1382 1383 /* 1384 * If the device is not open yet, let the generic code handle it. 1385 */ 1386 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1387 return (retval); 1388 1389 /* 1390 * If it isn't a extended or extended/deferred error, let 1391 * the generic code handle it. 1392 */ 1393 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1394 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1395 return (retval); 1396 1397 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1398 sense->asc == 0x4) { 1399 if (sense->ascq == 0x01) { 1400 /* 1401 * Unit In The Process Of Becoming Ready. 1402 */ 1403 printf("%s: waiting for pack to spin up...\n", 1404 device_xname(sd->sc_dev)); 1405 if (!callout_pending(&periph->periph_callout)) 1406 scsipi_periph_freeze(periph, 1); 1407 callout_reset(&periph->periph_callout, 1408 5 * hz, scsipi_periph_timed_thaw, periph); 1409 retval = ERESTART; 1410 } else if (sense->ascq == 0x02) { 1411 printf("%s: pack is stopped, restarting...\n", 1412 device_xname(sd->sc_dev)); 1413 s = splbio(); 1414 periph->periph_flags |= PERIPH_RECOVERING; 1415 splx(s); 1416 error = scsipi_start(periph, SSS_START, 1417 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1418 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1419 if (error) { 1420 aprint_error_dev(sd->sc_dev, 1421 "unable to restart pack\n"); 1422 retval = error; 1423 } else 1424 retval = ERESTART; 1425 s = splbio(); 1426 periph->periph_flags &= ~PERIPH_RECOVERING; 1427 splx(s); 1428 } 1429 } 1430 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1431 sense->asc == 0x31 && 1432 sense->ascq == 0x00) { /* maybe for any asq ? */ 1433 /* Medium Format Corrupted */ 1434 retval = EFTYPE; 1435 } 1436 return (retval); 1437 } 1438 1439 1440 static int 1441 sdsize(dev_t dev) 1442 { 1443 struct sd_softc *sd; 1444 int part, unit, omask; 1445 int size; 1446 1447 unit = SDUNIT(dev); 1448 sd = device_lookup_private(&sd_cd, unit); 1449 if (sd == NULL) 1450 return (-1); 1451 1452 if (!device_is_active(sd->sc_dev)) 1453 return (-1); 1454 1455 part = SDPART(dev); 1456 omask = sd->sc_dk.dk_openmask & (1 << part); 1457 1458 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1459 return (-1); 1460 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1461 size = -1; 1462 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1463 size = -1; 1464 else 1465 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1466 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1467 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1468 return (-1); 1469 return (size); 1470 } 1471 1472 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1473 static struct scsipi_xfer sx; 1474 static int sddoingadump; 1475 1476 /* 1477 * dump all of physical memory into the partition specified, starting 1478 * at offset 'dumplo' into the partition. 1479 */ 1480 static int 1481 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1482 { 1483 struct sd_softc *sd; /* disk unit to do the I/O */ 1484 struct disklabel *lp; /* disk's disklabel */ 1485 int unit, part; 1486 int sectorsize; /* size of a disk sector */ 1487 int nsects; /* number of sectors in partition */ 1488 int sectoff; /* sector offset of partition */ 1489 int totwrt; /* total number of sectors left to write */ 1490 int nwrt; /* current number of sectors to write */ 1491 struct scsipi_rw_10 cmd; /* write command */ 1492 struct scsipi_xfer *xs; /* ... convenience */ 1493 struct scsipi_periph *periph; 1494 struct scsipi_channel *chan; 1495 1496 /* Check if recursive dump; if so, punt. */ 1497 if (sddoingadump) 1498 return (EFAULT); 1499 1500 /* Mark as active early. */ 1501 sddoingadump = 1; 1502 1503 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1504 part = SDPART(dev); 1505 1506 /* Check for acceptable drive number. */ 1507 sd = device_lookup_private(&sd_cd, unit); 1508 if (sd == NULL) 1509 return (ENXIO); 1510 1511 if (!device_is_active(sd->sc_dev)) 1512 return (ENODEV); 1513 1514 periph = sd->sc_periph; 1515 chan = periph->periph_channel; 1516 1517 /* Make sure it was initialized. */ 1518 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1519 return (ENXIO); 1520 1521 /* Convert to disk sectors. Request must be a multiple of size. */ 1522 lp = sd->sc_dk.dk_label; 1523 sectorsize = lp->d_secsize; 1524 if ((size % sectorsize) != 0) 1525 return (EFAULT); 1526 totwrt = size / sectorsize; 1527 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1528 1529 nsects = lp->d_partitions[part].p_size; 1530 sectoff = lp->d_partitions[part].p_offset; 1531 1532 /* Check transfer bounds against partition size. */ 1533 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1534 return (EINVAL); 1535 1536 /* Offset block number to start of partition. */ 1537 blkno += sectoff; 1538 1539 xs = &sx; 1540 1541 while (totwrt > 0) { 1542 nwrt = totwrt; /* XXX */ 1543 #ifndef SD_DUMP_NOT_TRUSTED 1544 /* 1545 * Fill out the scsi command 1546 */ 1547 memset(&cmd, 0, sizeof(cmd)); 1548 cmd.opcode = WRITE_10; 1549 _lto4b(blkno, cmd.addr); 1550 _lto2b(nwrt, cmd.length); 1551 /* 1552 * Fill out the scsipi_xfer structure 1553 * Note: we cannot sleep as we may be an interrupt 1554 * don't use scsipi_command() as it may want to wait 1555 * for an xs. 1556 */ 1557 memset(xs, 0, sizeof(sx)); 1558 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1559 XS_CTL_DATA_OUT; 1560 xs->xs_status = 0; 1561 xs->xs_periph = periph; 1562 xs->xs_retries = SDRETRIES; 1563 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1564 xs->cmd = (struct scsipi_generic *)&cmd; 1565 xs->cmdlen = sizeof(cmd); 1566 xs->resid = nwrt * sectorsize; 1567 xs->error = XS_NOERROR; 1568 xs->bp = 0; 1569 xs->data = va; 1570 xs->datalen = nwrt * sectorsize; 1571 callout_init(&xs->xs_callout, 0); 1572 1573 /* 1574 * Pass all this info to the scsi driver. 1575 */ 1576 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1577 if ((xs->xs_status & XS_STS_DONE) == 0 || 1578 xs->error != XS_NOERROR) 1579 return (EIO); 1580 #else /* SD_DUMP_NOT_TRUSTED */ 1581 /* Let's just talk about this first... */ 1582 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1583 delay(500 * 1000); /* half a second */ 1584 #endif /* SD_DUMP_NOT_TRUSTED */ 1585 1586 /* update block count */ 1587 totwrt -= nwrt; 1588 blkno += nwrt; 1589 va = (char *)va + sectorsize * nwrt; 1590 } 1591 sddoingadump = 0; 1592 return (0); 1593 } 1594 1595 static int 1596 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1597 int page, int flags, int *big) 1598 { 1599 1600 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1601 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1602 *big = 1; 1603 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1604 size + sizeof(struct scsi_mode_parameter_header_10), 1605 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1606 } else { 1607 *big = 0; 1608 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1609 size + sizeof(struct scsi_mode_parameter_header_6), 1610 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1611 } 1612 } 1613 1614 static int 1615 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1616 int flags, int big) 1617 { 1618 1619 if (big) { 1620 struct scsi_mode_parameter_header_10 *header = sense; 1621 1622 _lto2b(0, header->data_length); 1623 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1624 size + sizeof(struct scsi_mode_parameter_header_10), 1625 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1626 } else { 1627 struct scsi_mode_parameter_header_6 *header = sense; 1628 1629 header->data_length = 0; 1630 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1631 size + sizeof(struct scsi_mode_parameter_header_6), 1632 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1633 } 1634 } 1635 1636 /* 1637 * sd_validate_blksize: 1638 * 1639 * Validate the block size. Print error if periph is specified, 1640 */ 1641 static int 1642 sd_validate_blksize(struct scsipi_periph *periph, int len) 1643 { 1644 1645 switch (len) { 1646 case 256: 1647 case 512: 1648 case 1024: 1649 case 2048: 1650 case 4096: 1651 return 1; 1652 } 1653 1654 if (periph) { 1655 scsipi_printaddr(periph); 1656 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1657 (len ^ (1 << (ffs(len) - 1))) ? 1658 "preposterous" : "unsupported", 1659 len, SD_DEFAULT_BLKSIZE); 1660 } 1661 1662 return 0; 1663 } 1664 1665 /* 1666 * sd_read_capacity: 1667 * 1668 * Find out from the device what its capacity is. 1669 */ 1670 static u_int64_t 1671 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1672 { 1673 union { 1674 struct scsipi_read_capacity_10 cmd; 1675 struct scsipi_read_capacity_16 cmd16; 1676 } cmd; 1677 union { 1678 struct scsipi_read_capacity_10_data data; 1679 struct scsipi_read_capacity_16_data data16; 1680 } *datap; 1681 uint64_t rv; 1682 1683 memset(&cmd, 0, sizeof(cmd)); 1684 cmd.cmd.opcode = READ_CAPACITY_10; 1685 1686 /* 1687 * Don't allocate data buffer on stack; 1688 * The lower driver layer might use the same stack and 1689 * if it uses region which is in the same cacheline, 1690 * cache flush ops against the data buffer won't work properly. 1691 */ 1692 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1693 if (datap == NULL) 1694 return 0; 1695 1696 /* 1697 * If the command works, interpret the result as a 4 byte 1698 * number of blocks 1699 */ 1700 rv = 0; 1701 memset(datap, 0, sizeof(datap->data)); 1702 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1703 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1704 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1705 goto out; 1706 1707 if (_4btol(datap->data.addr) != 0xffffffff) { 1708 *blksize = _4btol(datap->data.length); 1709 rv = _4btol(datap->data.addr) + 1; 1710 goto out; 1711 } 1712 1713 /* 1714 * Device is larger than can be reflected by READ CAPACITY (10). 1715 * Try READ CAPACITY (16). 1716 */ 1717 1718 memset(&cmd, 0, sizeof(cmd)); 1719 cmd.cmd16.opcode = READ_CAPACITY_16; 1720 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1721 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1722 1723 memset(datap, 0, sizeof(datap->data16)); 1724 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1725 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1726 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1727 goto out; 1728 1729 *blksize = _4btol(datap->data16.length); 1730 rv = _8btol(datap->data16.addr) + 1; 1731 1732 out: 1733 free(datap, M_TEMP); 1734 return rv; 1735 } 1736 1737 static int 1738 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1739 { 1740 struct { 1741 struct scsi_mode_parameter_header_6 header; 1742 /* no block descriptor */ 1743 u_int8_t pg_code; /* page code (should be 6) */ 1744 u_int8_t pg_length; /* page length (should be 11) */ 1745 u_int8_t wcd; /* bit0: cache disable */ 1746 u_int8_t lbs[2]; /* logical block size */ 1747 u_int8_t size[5]; /* number of log. blocks */ 1748 u_int8_t pp; /* power/performance */ 1749 u_int8_t flags; 1750 u_int8_t resvd; 1751 } scsipi_sense; 1752 u_int64_t blocks; 1753 int error, blksize; 1754 1755 /* 1756 * sd_read_capacity (ie "read capacity") and mode sense page 6 1757 * give the same information. Do both for now, and check 1758 * for consistency. 1759 * XXX probably differs for removable media 1760 */ 1761 dp->blksize = SD_DEFAULT_BLKSIZE; 1762 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1763 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1764 1765 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1766 &scsipi_sense.header, sizeof(scsipi_sense), 1767 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1768 1769 if (error != 0) 1770 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1771 1772 dp->blksize = blksize; 1773 if (!sd_validate_blksize(NULL, dp->blksize)) 1774 dp->blksize = _2btol(scsipi_sense.lbs); 1775 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1776 dp->blksize = SD_DEFAULT_BLKSIZE; 1777 1778 /* 1779 * Create a pseudo-geometry. 1780 */ 1781 dp->heads = 64; 1782 dp->sectors = 32; 1783 dp->cyls = blocks / (dp->heads * dp->sectors); 1784 dp->disksize = _5btol(scsipi_sense.size); 1785 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1786 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1787 (unsigned long long)dp->disksize, 1788 (unsigned long long)blocks); 1789 dp->disksize = blocks; 1790 } 1791 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1792 1793 return (SDGP_RESULT_OK); 1794 } 1795 1796 /* 1797 * Get the scsi driver to send a full inquiry to the * device and use the 1798 * results to fill out the disk parameter structure. 1799 */ 1800 static int 1801 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1802 { 1803 u_int64_t blocks; 1804 int error, blksize; 1805 #if 0 1806 int i; 1807 u_int8_t *p; 1808 #endif 1809 1810 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1811 flags); 1812 if (blocks == 0) { 1813 struct scsipi_read_format_capacities cmd; 1814 struct { 1815 struct scsipi_capacity_list_header header; 1816 struct scsipi_capacity_descriptor desc; 1817 } __packed data; 1818 1819 memset(&cmd, 0, sizeof(cmd)); 1820 memset(&data, 0, sizeof(data)); 1821 cmd.opcode = READ_FORMAT_CAPACITIES; 1822 _lto2b(sizeof(data), cmd.length); 1823 1824 error = scsipi_command(sd->sc_periph, 1825 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1826 SDRETRIES, 20000, NULL, 1827 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1828 if (error == EFTYPE) { 1829 /* Medium Format Corrupted, handle as not formatted */ 1830 return (SDGP_RESULT_UNFORMATTED); 1831 } 1832 if (error || data.header.length == 0) 1833 return (SDGP_RESULT_OFFLINE); 1834 1835 #if 0 1836 printf("rfc: length=%d\n", data.header.length); 1837 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"); 1838 #endif 1839 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1840 case SCSIPI_CAP_DESC_CODE_RESERVED: 1841 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1842 break; 1843 1844 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1845 return (SDGP_RESULT_UNFORMATTED); 1846 1847 case SCSIPI_CAP_DESC_CODE_NONE: 1848 return (SDGP_RESULT_OFFLINE); 1849 } 1850 1851 dp->disksize = blocks = _4btol(data.desc.nblks); 1852 if (blocks == 0) 1853 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1854 1855 blksize = _3btol(data.desc.blklen); 1856 1857 } else if (!sd_validate_blksize(NULL, blksize)) { 1858 struct sd_mode_sense_data scsipi_sense; 1859 int big, bsize; 1860 struct scsi_general_block_descriptor *bdesc; 1861 1862 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1863 error = sd_mode_sense(sd, 0, &scsipi_sense, 1864 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1865 if (!error) { 1866 if (big) { 1867 bdesc = (void *)(&scsipi_sense.header.big + 1); 1868 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1869 } else { 1870 bdesc = (void *)(&scsipi_sense.header.small + 1); 1871 bsize = scsipi_sense.header.small.blk_desc_len; 1872 } 1873 1874 #if 0 1875 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1876 printf("page 0 bsize=%d\n", bsize); 1877 printf("page 0 ok\n"); 1878 #endif 1879 1880 if (bsize >= 8) { 1881 blksize = _3btol(bdesc->blklen); 1882 } 1883 } 1884 } 1885 1886 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1887 blksize = SD_DEFAULT_BLKSIZE; 1888 1889 dp->blksize = blksize; 1890 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1891 return (0); 1892 } 1893 1894 static int 1895 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1896 { 1897 struct sd_mode_sense_data scsipi_sense; 1898 int error; 1899 int big, byte2; 1900 size_t poffset; 1901 union scsi_disk_pages *pages; 1902 1903 byte2 = SMS_DBD; 1904 again: 1905 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1906 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1907 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1908 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1909 flags | XS_CTL_SILENT, &big); 1910 if (error) { 1911 if (byte2 == SMS_DBD) { 1912 /* No result; try once more with DBD off */ 1913 byte2 = 0; 1914 goto again; 1915 } 1916 return (error); 1917 } 1918 1919 if (big) { 1920 poffset = sizeof scsipi_sense.header.big; 1921 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1922 } else { 1923 poffset = sizeof scsipi_sense.header.small; 1924 poffset += scsipi_sense.header.small.blk_desc_len; 1925 } 1926 1927 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1928 return ERESTART; 1929 1930 pages = (void *)((u_long)&scsipi_sense + poffset); 1931 #if 0 1932 { 1933 size_t i; 1934 u_int8_t *p; 1935 1936 printf("page 4 sense:"); 1937 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1938 i--, p++) 1939 printf(" %02x", *p); 1940 printf("\n"); 1941 printf("page 4 pg_code=%d sense=%p/%p\n", 1942 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1943 } 1944 #endif 1945 1946 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1947 return (ERESTART); 1948 1949 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1950 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1951 _3btol(pages->rigid_geometry.ncyl), 1952 pages->rigid_geometry.nheads, 1953 _2btol(pages->rigid_geometry.st_cyl_wp), 1954 _2btol(pages->rigid_geometry.st_cyl_rwc), 1955 _2btol(pages->rigid_geometry.land_zone))); 1956 1957 /* 1958 * KLUDGE!! (for zone recorded disks) 1959 * give a number of sectors so that sec * trks * cyls 1960 * is <= disk_size 1961 * can lead to wasted space! THINK ABOUT THIS ! 1962 */ 1963 dp->heads = pages->rigid_geometry.nheads; 1964 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1965 if (dp->heads == 0 || dp->cyls == 0) 1966 return (ERESTART); 1967 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1968 1969 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1970 if (dp->rot_rate == 0) 1971 dp->rot_rate = 3600; 1972 1973 #if 0 1974 printf("page 4 ok\n"); 1975 #endif 1976 return (0); 1977 } 1978 1979 static int 1980 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1981 { 1982 struct sd_mode_sense_data scsipi_sense; 1983 int error; 1984 int big, byte2; 1985 size_t poffset; 1986 union scsi_disk_pages *pages; 1987 1988 byte2 = SMS_DBD; 1989 again: 1990 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1991 error = sd_mode_sense(sd, 0, &scsipi_sense, 1992 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1993 sizeof(scsipi_sense.pages.flex_geometry), 5, 1994 flags | XS_CTL_SILENT, &big); 1995 if (error) { 1996 if (byte2 == SMS_DBD) { 1997 /* No result; try once more with DBD off */ 1998 byte2 = 0; 1999 goto again; 2000 } 2001 return (error); 2002 } 2003 2004 if (big) { 2005 poffset = sizeof scsipi_sense.header.big; 2006 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2007 } else { 2008 poffset = sizeof scsipi_sense.header.small; 2009 poffset += scsipi_sense.header.small.blk_desc_len; 2010 } 2011 2012 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2013 return ERESTART; 2014 2015 pages = (void *)((u_long)&scsipi_sense + poffset); 2016 #if 0 2017 { 2018 size_t i; 2019 u_int8_t *p; 2020 2021 printf("page 5 sense:"); 2022 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2023 i--, p++) 2024 printf(" %02x", *p); 2025 printf("\n"); 2026 printf("page 5 pg_code=%d sense=%p/%p\n", 2027 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2028 } 2029 #endif 2030 2031 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2032 return (ERESTART); 2033 2034 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2035 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2036 _3btol(pages->flex_geometry.ncyl), 2037 pages->flex_geometry.nheads, 2038 pages->flex_geometry.ph_sec_tr, 2039 _2btol(pages->flex_geometry.bytes_s))); 2040 2041 dp->heads = pages->flex_geometry.nheads; 2042 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2043 dp->sectors = pages->flex_geometry.ph_sec_tr; 2044 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2045 return (ERESTART); 2046 2047 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2048 if (dp->rot_rate == 0) 2049 dp->rot_rate = 3600; 2050 2051 #if 0 2052 printf("page 5 ok\n"); 2053 #endif 2054 return (0); 2055 } 2056 2057 static int 2058 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2059 { 2060 int error; 2061 2062 /* 2063 * If offline, the SDEV_MEDIA_LOADED flag will be 2064 * cleared by the caller if necessary. 2065 */ 2066 if (sd->type == T_SIMPLE_DIRECT) { 2067 error = sd_get_simplifiedparms(sd, dp, flags); 2068 if (!error) 2069 disk_blocksize(&sd->sc_dk, dp->blksize); 2070 return (error); 2071 } 2072 2073 error = sd_get_capacity(sd, dp, flags); 2074 if (error) 2075 return (error); 2076 2077 disk_blocksize(&sd->sc_dk, dp->blksize); 2078 2079 if (sd->type == T_OPTICAL) 2080 goto page0; 2081 2082 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2083 if (!sd_get_parms_page5(sd, dp, flags) || 2084 !sd_get_parms_page4(sd, dp, flags)) 2085 goto setprops; 2086 } else { 2087 if (!sd_get_parms_page4(sd, dp, flags) || 2088 !sd_get_parms_page5(sd, dp, flags)) 2089 goto setprops; 2090 } 2091 2092 page0: 2093 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2094 /* Try calling driver's method for figuring out geometry. */ 2095 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2096 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2097 (sd->sc_periph, dp, dp->disksize)) { 2098 /* 2099 * Use adaptec standard fictitious geometry 2100 * this depends on which controller (e.g. 1542C is 2101 * different. but we have to put SOMETHING here..) 2102 */ 2103 dp->heads = 64; 2104 dp->sectors = 32; 2105 dp->cyls = dp->disksize / (64 * 32); 2106 } 2107 dp->rot_rate = 3600; 2108 2109 setprops: 2110 sd_set_properties(sd); 2111 2112 return (SDGP_RESULT_OK); 2113 } 2114 2115 static int 2116 sd_flush(struct sd_softc *sd, int flags) 2117 { 2118 struct scsipi_periph *periph = sd->sc_periph; 2119 struct scsi_synchronize_cache_10 cmd; 2120 2121 /* 2122 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2123 * We issue with address 0 length 0, which should be 2124 * interpreted by the device as "all remaining blocks 2125 * starting at address 0". We ignore ILLEGAL REQUEST 2126 * in the event that the command is not supported by 2127 * the device, and poll for completion so that we know 2128 * that the cache has actually been flushed. 2129 * 2130 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2131 * command, as indicated by our quirks flags. 2132 * 2133 * XXX What about older devices? 2134 */ 2135 if (periph->periph_version < 2 || 2136 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2137 return (0); 2138 2139 sd->flags |= SDF_FLUSHING; 2140 memset(&cmd, 0, sizeof(cmd)); 2141 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2142 2143 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2144 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2145 } 2146 2147 static int 2148 sd_getcache(struct sd_softc *sd, int *bitsp) 2149 { 2150 struct scsipi_periph *periph = sd->sc_periph; 2151 struct sd_mode_sense_data scsipi_sense; 2152 int error, bits = 0; 2153 int big; 2154 union scsi_disk_pages *pages; 2155 2156 if (periph->periph_version < 2) 2157 return (EOPNOTSUPP); 2158 2159 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2160 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2161 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2162 if (error) 2163 return (error); 2164 2165 if (big) 2166 pages = (void *)(&scsipi_sense.header.big + 1); 2167 else 2168 pages = (void *)(&scsipi_sense.header.small + 1); 2169 2170 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2171 bits |= DKCACHE_READ; 2172 if (pages->caching_params.flags & CACHING_WCE) 2173 bits |= DKCACHE_WRITE; 2174 if (pages->caching_params.pg_code & PGCODE_PS) 2175 bits |= DKCACHE_SAVE; 2176 2177 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2178 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2179 sizeof(scsipi_sense.pages.caching_params), 2180 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2181 if (error == 0) { 2182 if (big) 2183 pages = (void *)(&scsipi_sense.header.big + 1); 2184 else 2185 pages = (void *)(&scsipi_sense.header.small + 1); 2186 2187 if (pages->caching_params.flags & CACHING_RCD) 2188 bits |= DKCACHE_RCHANGE; 2189 if (pages->caching_params.flags & CACHING_WCE) 2190 bits |= DKCACHE_WCHANGE; 2191 } 2192 2193 *bitsp = bits; 2194 2195 return (0); 2196 } 2197 2198 static int 2199 sd_setcache(struct sd_softc *sd, int bits) 2200 { 2201 struct scsipi_periph *periph = sd->sc_periph; 2202 struct sd_mode_sense_data scsipi_sense; 2203 int error; 2204 uint8_t oflags, byte2 = 0; 2205 int big; 2206 union scsi_disk_pages *pages; 2207 2208 if (periph->periph_version < 2) 2209 return (EOPNOTSUPP); 2210 2211 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2212 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2213 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2214 if (error) 2215 return (error); 2216 2217 if (big) 2218 pages = (void *)(&scsipi_sense.header.big + 1); 2219 else 2220 pages = (void *)(&scsipi_sense.header.small + 1); 2221 2222 oflags = pages->caching_params.flags; 2223 2224 if (bits & DKCACHE_READ) 2225 pages->caching_params.flags &= ~CACHING_RCD; 2226 else 2227 pages->caching_params.flags |= CACHING_RCD; 2228 2229 if (bits & DKCACHE_WRITE) 2230 pages->caching_params.flags |= CACHING_WCE; 2231 else 2232 pages->caching_params.flags &= ~CACHING_WCE; 2233 2234 if (oflags == pages->caching_params.flags) 2235 return (0); 2236 2237 pages->caching_params.pg_code &= PGCODE_MASK; 2238 2239 if (bits & DKCACHE_SAVE) 2240 byte2 |= SMS_SP; 2241 2242 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2243 sizeof(struct scsi_mode_page_header) + 2244 pages->caching_params.pg_length, 0, big)); 2245 } 2246 2247 static void 2248 sd_set_properties(struct sd_softc *sd) 2249 { 2250 prop_dictionary_t disk_info, odisk_info, geom; 2251 2252 disk_info = prop_dictionary_create(); 2253 2254 geom = prop_dictionary_create(); 2255 2256 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2257 sd->params.disksize); 2258 2259 prop_dictionary_set_uint32(geom, "sector-size", 2260 sd->params.blksize); 2261 2262 prop_dictionary_set_uint16(geom, "sectors-per-track", 2263 sd->params.sectors); 2264 2265 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2266 sd->params.heads); 2267 2268 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2269 sd->params.cyls); 2270 2271 prop_dictionary_set(disk_info, "geometry", geom); 2272 prop_object_release(geom); 2273 2274 prop_dictionary_set(device_properties(sd->sc_dev), 2275 "disk-info", disk_info); 2276 2277 /* 2278 * Don't release disk_info here; we keep a reference to it. 2279 * disk_detach() will release it when we go away. 2280 */ 2281 2282 odisk_info = sd->sc_dk.dk_info; 2283 sd->sc_dk.dk_info = disk_info; 2284 if (odisk_info) 2285 prop_object_release(odisk_info); 2286 } 2287