1 /* $NetBSD: sd.c,v 1.275 2008/07/16 18:54:09 drochner 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 1.275 2008/07/16 18:54:09 drochner Exp $"); 51 52 #include "opt_scsi.h" 53 #include "rnd.h" 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/kernel.h> 58 #include <sys/file.h> 59 #include <sys/stat.h> 60 #include <sys/ioctl.h> 61 #include <sys/scsiio.h> 62 #include <sys/buf.h> 63 #include <sys/bufq.h> 64 #include <sys/uio.h> 65 #include <sys/malloc.h> 66 #include <sys/errno.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/proc.h> 71 #include <sys/conf.h> 72 #include <sys/vnode.h> 73 #if NRND > 0 74 #include <sys/rnd.h> 75 #endif 76 77 #include <dev/scsipi/scsi_spc.h> 78 #include <dev/scsipi/scsipi_all.h> 79 #include <dev/scsipi/scsi_all.h> 80 #include <dev/scsipi/scsipi_disk.h> 81 #include <dev/scsipi/scsi_disk.h> 82 #include <dev/scsipi/scsiconf.h> 83 #include <dev/scsipi/scsipi_base.h> 84 #include <dev/scsipi/sdvar.h> 85 86 #include <prop/proplib.h> 87 88 #define SDUNIT(dev) DISKUNIT(dev) 89 #define SDPART(dev) DISKPART(dev) 90 #define SDMINOR(unit, part) DISKMINOR(unit, part) 91 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 92 93 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 94 95 #define SD_DEFAULT_BLKSIZE 512 96 97 static void sdminphys(struct buf *); 98 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 99 static int sdgetdisklabel(struct sd_softc *); 100 static void sdstart(struct scsipi_periph *); 101 static void sdrestart(void *); 102 static void sddone(struct scsipi_xfer *, int); 103 static bool sd_suspend(device_t PMF_FN_PROTO); 104 static void sd_shutdown(void *); 105 static int sd_interpret_sense(struct scsipi_xfer *); 106 107 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 108 int, int *); 109 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int); 111 static int sd_validate_blksize(struct scsipi_periph *, int); 112 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 113 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 114 int); 115 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 117 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 118 int); 119 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 120 int); 121 122 static int sd_flush(struct sd_softc *, int); 123 static int sd_getcache(struct sd_softc *, int *); 124 static int sd_setcache(struct sd_softc *, int); 125 126 static int sdmatch(struct device *, struct cfdata *, void *); 127 static void sdattach(struct device *, struct device *, void *); 128 static int sdactivate(struct device *, enum devact); 129 static int sddetach(struct device *, int); 130 static void sd_set_properties(struct sd_softc *); 131 132 CFATTACH_DECL_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 133 sdactivate); 134 135 extern struct cfdriver sd_cd; 136 137 static const struct scsipi_inquiry_pattern sd_patterns[] = { 138 {T_DIRECT, T_FIXED, 139 "", "", ""}, 140 {T_DIRECT, T_REMOV, 141 "", "", ""}, 142 {T_OPTICAL, T_FIXED, 143 "", "", ""}, 144 {T_OPTICAL, T_REMOV, 145 "", "", ""}, 146 {T_SIMPLE_DIRECT, T_FIXED, 147 "", "", ""}, 148 {T_SIMPLE_DIRECT, T_REMOV, 149 "", "", ""}, 150 }; 151 152 static dev_type_open(sdopen); 153 static dev_type_close(sdclose); 154 static dev_type_read(sdread); 155 static dev_type_write(sdwrite); 156 static dev_type_ioctl(sdioctl); 157 static dev_type_strategy(sdstrategy); 158 static dev_type_dump(sddump); 159 static dev_type_size(sdsize); 160 161 const struct bdevsw sd_bdevsw = { 162 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 163 }; 164 165 const struct cdevsw sd_cdevsw = { 166 sdopen, sdclose, sdread, sdwrite, sdioctl, 167 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 168 }; 169 170 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 171 172 static const struct scsipi_periphsw sd_switch = { 173 sd_interpret_sense, /* check our error handler first */ 174 sdstart, /* have a queue, served by this */ 175 NULL, /* have no async handler */ 176 sddone, /* deal with stats at interrupt time */ 177 }; 178 179 struct sd_mode_sense_data { 180 /* 181 * XXX 182 * We are not going to parse this as-is -- it just has to be large 183 * enough. 184 */ 185 union { 186 struct scsi_mode_parameter_header_6 small; 187 struct scsi_mode_parameter_header_10 big; 188 } header; 189 struct scsi_general_block_descriptor blk_desc; 190 union scsi_disk_pages pages; 191 }; 192 193 /* 194 * The routine called by the low level scsi routine when it discovers 195 * A device suitable for this driver 196 */ 197 static int 198 sdmatch(struct device *parent, struct cfdata *match, 199 void *aux) 200 { 201 struct scsipibus_attach_args *sa = aux; 202 int priority; 203 204 (void)scsipi_inqmatch(&sa->sa_inqbuf, 205 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 206 sizeof(sd_patterns[0]), &priority); 207 208 return (priority); 209 } 210 211 /* 212 * Attach routine common to atapi & scsi. 213 */ 214 static void 215 sdattach(struct device *parent, struct device *self, void *aux) 216 { 217 struct sd_softc *sd = device_private(self); 218 struct scsipibus_attach_args *sa = aux; 219 struct scsipi_periph *periph = sa->sa_periph; 220 int error, result; 221 struct disk_parms *dp = &sd->params; 222 char pbuf[9]; 223 224 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 225 226 sd->sc_dev = self; 227 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 228 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 229 if (sd->type == T_SIMPLE_DIRECT) 230 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 231 232 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 233 periph->periph_version == 0) 234 sd->flags |= SDF_ANCIENT; 235 236 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 237 238 callout_init(&sd->sc_callout, 0); 239 240 /* 241 * Store information needed to contact our base driver 242 */ 243 sd->sc_periph = periph; 244 245 periph->periph_dev = sd->sc_dev; 246 periph->periph_switch = &sd_switch; 247 248 /* 249 * Increase our openings to the maximum-per-periph 250 * supported by the adapter. This will either be 251 * clamped down or grown by the adapter if necessary. 252 */ 253 periph->periph_openings = 254 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 255 periph->periph_flags |= PERIPH_GROW_OPENINGS; 256 257 /* 258 * Initialize and attach the disk structure. 259 */ 260 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 261 disk_attach(&sd->sc_dk); 262 263 /* 264 * Use the subdriver to request information regarding the drive. 265 */ 266 aprint_naive("\n"); 267 aprint_normal("\n"); 268 269 error = scsipi_test_unit_ready(periph, 270 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 271 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 272 273 if (error) 274 result = SDGP_RESULT_OFFLINE; 275 else 276 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 277 aprint_normal_dev(sd->sc_dev, ""); 278 switch (result) { 279 case SDGP_RESULT_OK: 280 format_bytes(pbuf, sizeof(pbuf), 281 (u_int64_t)dp->disksize * dp->blksize); 282 aprint_normal( 283 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 284 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 285 (unsigned long long)dp->disksize); 286 break; 287 288 case SDGP_RESULT_OFFLINE: 289 aprint_normal("drive offline"); 290 break; 291 292 case SDGP_RESULT_UNFORMATTED: 293 aprint_normal("unformatted media"); 294 break; 295 296 #ifdef DIAGNOSTIC 297 default: 298 panic("sdattach: unknown result from get_parms"); 299 break; 300 #endif 301 } 302 aprint_normal("\n"); 303 304 /* 305 * Establish a shutdown hook so that we can ensure that 306 * our data has actually made it onto the platter at 307 * shutdown time. Note that this relies on the fact 308 * that the shutdown hook code puts us at the head of 309 * the list (thus guaranteeing that our hook runs before 310 * our ancestors'). 311 */ 312 if ((sd->sc_sdhook = 313 shutdownhook_establish(sd_shutdown, sd)) == NULL) 314 aprint_error_dev(sd->sc_dev, 315 "WARNING: unable to establish shutdown hook\n"); 316 317 if (!pmf_device_register(self, sd_suspend, NULL)) 318 aprint_error_dev(self, "couldn't establish power handler\n"); 319 320 #if NRND > 0 321 /* 322 * attach the device into the random source list 323 */ 324 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 325 RND_TYPE_DISK, 0); 326 #endif 327 328 /* Discover wedges on this disk. */ 329 dkwedge_discover(&sd->sc_dk); 330 331 sd_set_properties(sd); 332 } 333 334 static int 335 sdactivate(struct device *self, enum devact act) 336 { 337 int rv = 0; 338 339 switch (act) { 340 case DVACT_ACTIVATE: 341 rv = EOPNOTSUPP; 342 break; 343 344 case DVACT_DEACTIVATE: 345 /* 346 * Nothing to do; we key off the device's DVF_ACTIVE. 347 */ 348 break; 349 } 350 return (rv); 351 } 352 353 static int 354 sddetach(struct device *self, int flags) 355 { 356 struct sd_softc *sd = device_private(self); 357 int s, bmaj, cmaj, i, mn; 358 359 /* locate the major number */ 360 bmaj = bdevsw_lookup_major(&sd_bdevsw); 361 cmaj = cdevsw_lookup_major(&sd_cdevsw); 362 363 /* Nuke the vnodes for any open instances */ 364 for (i = 0; i < MAXPARTITIONS; i++) { 365 mn = SDMINOR(device_unit(self), i); 366 vdevgone(bmaj, mn, mn, VBLK); 367 vdevgone(cmaj, mn, mn, VCHR); 368 } 369 370 /* kill any pending restart */ 371 callout_stop(&sd->sc_callout); 372 373 /* Delete all of our wedges. */ 374 dkwedge_delall(&sd->sc_dk); 375 376 s = splbio(); 377 378 /* Kill off any queued buffers. */ 379 bufq_drain(sd->buf_queue); 380 381 bufq_free(sd->buf_queue); 382 383 /* Kill off any pending commands. */ 384 scsipi_kill_pending(sd->sc_periph); 385 386 splx(s); 387 388 /* Detach from the disk list. */ 389 disk_detach(&sd->sc_dk); 390 disk_destroy(&sd->sc_dk); 391 392 pmf_device_deregister(self); 393 shutdownhook_disestablish(sd->sc_sdhook); 394 395 #if NRND > 0 396 /* Unhook the entropy source. */ 397 rnd_detach_source(&sd->rnd_source); 398 #endif 399 400 return (0); 401 } 402 403 /* 404 * open the device. Make sure the partition info is a up-to-date as can be. 405 */ 406 static int 407 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 408 { 409 struct sd_softc *sd; 410 struct scsipi_periph *periph; 411 struct scsipi_adapter *adapt; 412 int unit, part; 413 int error; 414 415 unit = SDUNIT(dev); 416 sd = device_lookup_private(&sd_cd, unit); 417 if (sd == NULL) 418 return (ENXIO); 419 420 if (!device_is_active(sd->sc_dev)) 421 return (ENODEV); 422 423 part = SDPART(dev); 424 425 mutex_enter(&sd->sc_dk.dk_openlock); 426 427 /* 428 * If there are wedges, and this is not RAW_PART, then we 429 * need to fail. 430 */ 431 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 432 error = EBUSY; 433 goto bad1; 434 } 435 436 periph = sd->sc_periph; 437 adapt = periph->periph_channel->chan_adapter; 438 439 SC_DEBUG(periph, SCSIPI_DB1, 440 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 441 sd_cd.cd_ndevs, part)); 442 443 /* 444 * If this is the first open of this device, add a reference 445 * to the adapter. 446 */ 447 if (sd->sc_dk.dk_openmask == 0 && 448 (error = scsipi_adapter_addref(adapt)) != 0) 449 goto bad1; 450 451 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 452 /* 453 * If any partition is open, but the disk has been invalidated, 454 * disallow further opens of non-raw partition 455 */ 456 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 457 (part != RAW_PART || fmt != S_IFCHR)) { 458 error = EIO; 459 goto bad2; 460 } 461 } else { 462 int silent; 463 464 if (part == RAW_PART && fmt == S_IFCHR) 465 silent = XS_CTL_SILENT; 466 else 467 silent = 0; 468 469 /* Check that it is still responding and ok. */ 470 error = scsipi_test_unit_ready(periph, 471 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 472 silent); 473 474 /* 475 * Start the pack spinning if necessary. Always allow the 476 * raw parition to be opened, for raw IOCTLs. Data transfers 477 * will check for SDEV_MEDIA_LOADED. 478 */ 479 if (error == EIO) { 480 int error2; 481 482 error2 = scsipi_start(periph, SSS_START, silent); 483 switch (error2) { 484 case 0: 485 error = 0; 486 break; 487 case EIO: 488 case EINVAL: 489 break; 490 default: 491 error = error2; 492 break; 493 } 494 } 495 if (error) { 496 if (silent) 497 goto out; 498 goto bad2; 499 } 500 501 periph->periph_flags |= PERIPH_OPEN; 502 503 if (periph->periph_flags & PERIPH_REMOVABLE) { 504 /* Lock the pack in. */ 505 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 506 XS_CTL_IGNORE_ILLEGAL_REQUEST | 507 XS_CTL_IGNORE_MEDIA_CHANGE | 508 XS_CTL_SILENT); 509 if (error) 510 goto bad3; 511 } 512 513 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 514 int param_error; 515 periph->periph_flags |= PERIPH_MEDIA_LOADED; 516 517 /* 518 * Load the physical device parameters. 519 * 520 * Note that if media is present but unformatted, 521 * we allow the open (so that it can be formatted!). 522 * The drive should refuse real I/O, if the media is 523 * unformatted. 524 */ 525 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 526 == SDGP_RESULT_OFFLINE) { 527 error = ENXIO; 528 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 529 goto bad3; 530 } 531 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 532 533 /* Load the partition info if not already loaded. */ 534 if (param_error == 0) { 535 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 536 error = EIO; 537 goto bad3; 538 } 539 SC_DEBUG(periph, SCSIPI_DB3, 540 ("Disklabel loaded ")); 541 } 542 } 543 } 544 545 /* Check that the partition exists. */ 546 if (part != RAW_PART && 547 (part >= sd->sc_dk.dk_label->d_npartitions || 548 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 549 error = ENXIO; 550 goto bad3; 551 } 552 553 out: /* Insure only one open at a time. */ 554 switch (fmt) { 555 case S_IFCHR: 556 sd->sc_dk.dk_copenmask |= (1 << part); 557 break; 558 case S_IFBLK: 559 sd->sc_dk.dk_bopenmask |= (1 << part); 560 break; 561 } 562 sd->sc_dk.dk_openmask = 563 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 564 565 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 566 mutex_exit(&sd->sc_dk.dk_openlock); 567 return (0); 568 569 bad3: 570 if (sd->sc_dk.dk_openmask == 0) { 571 if (periph->periph_flags & PERIPH_REMOVABLE) 572 scsipi_prevent(periph, SPAMR_ALLOW, 573 XS_CTL_IGNORE_ILLEGAL_REQUEST | 574 XS_CTL_IGNORE_MEDIA_CHANGE | 575 XS_CTL_SILENT); 576 periph->periph_flags &= ~PERIPH_OPEN; 577 } 578 579 bad2: 580 if (sd->sc_dk.dk_openmask == 0) 581 scsipi_adapter_delref(adapt); 582 583 bad1: 584 mutex_exit(&sd->sc_dk.dk_openlock); 585 return (error); 586 } 587 588 /* 589 * close the device.. only called if we are the LAST occurence of an open 590 * device. Convenient now but usually a pain. 591 */ 592 static int 593 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 594 { 595 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 596 struct scsipi_periph *periph = sd->sc_periph; 597 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 598 int part = SDPART(dev); 599 600 mutex_enter(&sd->sc_dk.dk_openlock); 601 switch (fmt) { 602 case S_IFCHR: 603 sd->sc_dk.dk_copenmask &= ~(1 << part); 604 break; 605 case S_IFBLK: 606 sd->sc_dk.dk_bopenmask &= ~(1 << part); 607 break; 608 } 609 sd->sc_dk.dk_openmask = 610 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 611 612 if (sd->sc_dk.dk_openmask == 0) { 613 /* 614 * If the disk cache needs flushing, and the disk supports 615 * it, do it now. 616 */ 617 if ((sd->flags & SDF_DIRTY) != 0) { 618 if (sd_flush(sd, 0)) { 619 aprint_error_dev(sd->sc_dev, 620 "cache synchronization failed\n"); 621 sd->flags &= ~SDF_FLUSHING; 622 } else 623 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 624 } 625 626 scsipi_wait_drain(periph); 627 628 if (periph->periph_flags & PERIPH_REMOVABLE) 629 scsipi_prevent(periph, SPAMR_ALLOW, 630 XS_CTL_IGNORE_ILLEGAL_REQUEST | 631 XS_CTL_IGNORE_NOT_READY | 632 XS_CTL_SILENT); 633 periph->periph_flags &= ~PERIPH_OPEN; 634 635 scsipi_wait_drain(periph); 636 637 scsipi_adapter_delref(adapt); 638 } 639 640 mutex_exit(&sd->sc_dk.dk_openlock); 641 return (0); 642 } 643 644 /* 645 * Actually translate the requested transfer into one the physical driver 646 * can understand. The transfer is described by a buf and will include 647 * only one physical transfer. 648 */ 649 static void 650 sdstrategy(struct buf *bp) 651 { 652 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 653 struct scsipi_periph *periph = sd->sc_periph; 654 struct disklabel *lp; 655 daddr_t blkno; 656 int s; 657 bool sector_aligned; 658 659 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 660 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 661 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 662 /* 663 * If the device has been made invalid, error out 664 */ 665 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 666 !device_is_active(sd->sc_dev)) { 667 if (periph->periph_flags & PERIPH_OPEN) 668 bp->b_error = EIO; 669 else 670 bp->b_error = ENODEV; 671 goto done; 672 } 673 674 lp = sd->sc_dk.dk_label; 675 676 /* 677 * The transfer must be a whole number of blocks, offset must not be 678 * negative. 679 */ 680 if (lp->d_secsize == DEV_BSIZE) { 681 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 682 } else { 683 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 684 } 685 if (!sector_aligned || bp->b_blkno < 0) { 686 bp->b_error = EINVAL; 687 goto done; 688 } 689 /* 690 * If it's a null transfer, return immediatly 691 */ 692 if (bp->b_bcount == 0) 693 goto done; 694 695 /* 696 * Do bounds checking, adjust transfer. if error, process. 697 * If end of partition, just return. 698 */ 699 if (SDPART(bp->b_dev) == RAW_PART) { 700 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 701 sd->params.disksize512) <= 0) 702 goto done; 703 } else { 704 if (bounds_check_with_label(&sd->sc_dk, bp, 705 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 706 goto done; 707 } 708 709 /* 710 * Now convert the block number to absolute and put it in 711 * terms of the device's logical block size. 712 */ 713 if (lp->d_secsize == DEV_BSIZE) 714 blkno = bp->b_blkno; 715 else if (lp->d_secsize > DEV_BSIZE) 716 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 717 else 718 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 719 720 if (SDPART(bp->b_dev) != RAW_PART) 721 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 722 723 bp->b_rawblkno = blkno; 724 725 s = splbio(); 726 727 /* 728 * Place it in the queue of disk activities for this disk. 729 * 730 * XXX Only do disksort() if the current operating mode does not 731 * XXX include tagged queueing. 732 */ 733 BUFQ_PUT(sd->buf_queue, bp); 734 735 /* 736 * Tell the device to get going on the transfer if it's 737 * not doing anything, otherwise just wait for completion 738 */ 739 sdstart(sd->sc_periph); 740 741 splx(s); 742 return; 743 744 done: 745 /* 746 * Correctly set the buf to indicate a completed xfer 747 */ 748 bp->b_resid = bp->b_bcount; 749 biodone(bp); 750 } 751 752 /* 753 * sdstart looks to see if there is a buf waiting for the device 754 * and that the device is not already busy. If both are true, 755 * It dequeues the buf and creates a scsi command to perform the 756 * transfer in the buf. The transfer request will call scsipi_done 757 * on completion, which will in turn call this routine again 758 * so that the next queued transfer is performed. 759 * The bufs are queued by the strategy routine (sdstrategy) 760 * 761 * This routine is also called after other non-queued requests 762 * have been made of the scsi driver, to ensure that the queue 763 * continues to be drained. 764 * 765 * must be called at the correct (highish) spl level 766 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 767 */ 768 static void 769 sdstart(struct scsipi_periph *periph) 770 { 771 struct sd_softc *sd = device_private(periph->periph_dev); 772 struct disklabel *lp = sd->sc_dk.dk_label; 773 struct buf *bp = 0; 774 struct scsipi_rw_16 cmd16; 775 struct scsipi_rw_10 cmd_big; 776 struct scsi_rw_6 cmd_small; 777 struct scsipi_generic *cmdp; 778 struct scsipi_xfer *xs; 779 int nblks, cmdlen, error, flags; 780 781 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 782 /* 783 * Check if the device has room for another command 784 */ 785 while (periph->periph_active < periph->periph_openings) { 786 /* 787 * there is excess capacity, but a special waits 788 * It'll need the adapter as soon as we clear out of the 789 * way and let it run (user level wait). 790 */ 791 if (periph->periph_flags & PERIPH_WAITING) { 792 periph->periph_flags &= ~PERIPH_WAITING; 793 wakeup((void *)periph); 794 return; 795 } 796 797 /* 798 * If the device has become invalid, abort all the 799 * reads and writes until all files have been closed and 800 * re-opened 801 */ 802 if (__predict_false( 803 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 804 if ((bp = BUFQ_GET(sd->buf_queue)) != NULL) { 805 bp->b_error = EIO; 806 bp->b_resid = bp->b_bcount; 807 biodone(bp); 808 continue; 809 } else { 810 return; 811 } 812 } 813 814 /* 815 * See if there is a buf with work for us to do.. 816 */ 817 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 818 return; 819 820 /* 821 * We have a buf, now we should make a command. 822 */ 823 824 if (lp->d_secsize == DEV_BSIZE) 825 nblks = bp->b_bcount >> DEV_BSHIFT; 826 else 827 nblks = howmany(bp->b_bcount, lp->d_secsize); 828 829 /* 830 * Fill out the scsi command. Use the smallest CDB possible 831 * (6-byte, 10-byte, or 16-byte). 832 */ 833 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 834 ((nblks & 0xff) == nblks) && 835 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 836 /* 6-byte CDB */ 837 memset(&cmd_small, 0, sizeof(cmd_small)); 838 cmd_small.opcode = (bp->b_flags & B_READ) ? 839 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 840 _lto3b(bp->b_rawblkno, cmd_small.addr); 841 cmd_small.length = nblks & 0xff; 842 cmdlen = sizeof(cmd_small); 843 cmdp = (struct scsipi_generic *)&cmd_small; 844 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 845 /* 10-byte CDB */ 846 memset(&cmd_big, 0, sizeof(cmd_big)); 847 cmd_big.opcode = (bp->b_flags & B_READ) ? 848 READ_10 : WRITE_10; 849 _lto4b(bp->b_rawblkno, cmd_big.addr); 850 _lto2b(nblks, cmd_big.length); 851 cmdlen = sizeof(cmd_big); 852 cmdp = (struct scsipi_generic *)&cmd_big; 853 } else { 854 /* 16-byte CDB */ 855 memset(&cmd16, 0, sizeof(cmd16)); 856 cmd16.opcode = (bp->b_flags & B_READ) ? 857 READ_16 : WRITE_16; 858 _lto8b(bp->b_rawblkno, cmd16.addr); 859 _lto4b(nblks, cmd16.length); 860 cmdlen = sizeof(cmd16); 861 cmdp = (struct scsipi_generic *)&cmd16; 862 } 863 864 /* Instrumentation. */ 865 disk_busy(&sd->sc_dk); 866 867 /* 868 * Mark the disk dirty so that the cache will be 869 * flushed on close. 870 */ 871 if ((bp->b_flags & B_READ) == 0) 872 sd->flags |= SDF_DIRTY; 873 874 /* 875 * Figure out what flags to use. 876 */ 877 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 878 if (bp->b_flags & B_READ) 879 flags |= XS_CTL_DATA_IN; 880 else 881 flags |= XS_CTL_DATA_OUT; 882 883 /* 884 * Call the routine that chats with the adapter. 885 * Note: we cannot sleep as we may be an interrupt 886 */ 887 xs = scsipi_make_xs(periph, cmdp, cmdlen, 888 (u_char *)bp->b_data, bp->b_bcount, 889 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 890 if (__predict_false(xs == NULL)) { 891 /* 892 * out of memory. Keep this buffer in the queue, and 893 * retry later. 894 */ 895 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 896 periph); 897 return; 898 } 899 /* 900 * need to dequeue the buffer before queuing the command, 901 * because cdstart may be called recursively from the 902 * HBA driver 903 */ 904 #ifdef DIAGNOSTIC 905 if (BUFQ_GET(sd->buf_queue) != bp) 906 panic("sdstart(): dequeued wrong buf"); 907 #else 908 BUFQ_GET(sd->buf_queue); 909 #endif 910 error = scsipi_execute_xs(xs); 911 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 912 KASSERT(error == 0); 913 } 914 } 915 916 static void 917 sdrestart(void *v) 918 { 919 int s = splbio(); 920 sdstart((struct scsipi_periph *)v); 921 splx(s); 922 } 923 924 static void 925 sddone(struct scsipi_xfer *xs, int error) 926 { 927 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 928 struct buf *bp = xs->bp; 929 930 if (sd->flags & SDF_FLUSHING) { 931 /* Flush completed, no longer dirty. */ 932 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 933 } 934 935 if (bp) { 936 bp->b_error = error; 937 bp->b_resid = xs->resid; 938 if (error) { 939 /* on a read/write error bp->b_resid is zero, so fix */ 940 bp->b_resid = bp->b_bcount; 941 } 942 943 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 944 (bp->b_flags & B_READ)); 945 #if NRND > 0 946 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 947 #endif 948 949 biodone(bp); 950 } 951 } 952 953 static void 954 sdminphys(struct buf *bp) 955 { 956 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 957 long xmax; 958 959 /* 960 * If the device is ancient, we want to make sure that 961 * the transfer fits into a 6-byte cdb. 962 * 963 * XXX Note that the SCSI-I spec says that 256-block transfers 964 * are allowed in a 6-byte read/write, and are specified 965 * by settng the "length" to 0. However, we're conservative 966 * here, allowing only 255-block transfers in case an 967 * ancient device gets confused by length == 0. A length of 0 968 * in a 10-byte read/write actually means 0 blocks. 969 */ 970 if ((sd->flags & SDF_ANCIENT) && 971 ((sd->sc_periph->periph_flags & 972 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 973 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 974 975 if (bp->b_bcount > xmax) 976 bp->b_bcount = xmax; 977 } 978 979 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 980 } 981 982 static int 983 sdread(dev_t dev, struct uio *uio, int ioflag) 984 { 985 986 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 987 } 988 989 static int 990 sdwrite(dev_t dev, struct uio *uio, int ioflag) 991 { 992 993 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 994 } 995 996 /* 997 * Perform special action on behalf of the user 998 * Knows about the internals of this device 999 */ 1000 static int 1001 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1002 { 1003 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 1004 struct scsipi_periph *periph = sd->sc_periph; 1005 int part = SDPART(dev); 1006 int error = 0; 1007 #ifdef __HAVE_OLD_DISKLABEL 1008 struct disklabel *newlabel = NULL; 1009 #endif 1010 1011 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1012 1013 /* 1014 * If the device is not valid, some IOCTLs can still be 1015 * handled on the raw partition. Check this here. 1016 */ 1017 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1018 switch (cmd) { 1019 case DIOCKLABEL: 1020 case DIOCWLABEL: 1021 case DIOCLOCK: 1022 case DIOCEJECT: 1023 case ODIOCEJECT: 1024 case DIOCGCACHE: 1025 case DIOCSCACHE: 1026 case SCIOCIDENTIFY: 1027 case OSCIOCIDENTIFY: 1028 case SCIOCCOMMAND: 1029 case SCIOCDEBUG: 1030 if (part == RAW_PART) 1031 break; 1032 /* FALLTHROUGH */ 1033 default: 1034 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1035 return (ENODEV); 1036 else 1037 return (EIO); 1038 } 1039 } 1040 1041 switch (cmd) { 1042 case DIOCGDINFO: 1043 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1044 return (0); 1045 1046 #ifdef __HAVE_OLD_DISKLABEL 1047 case ODIOCGDINFO: 1048 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1049 if (newlabel == NULL) 1050 return EIO; 1051 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1052 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1053 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1054 else 1055 error = ENOTTY; 1056 free(newlabel, M_TEMP); 1057 return error; 1058 #endif 1059 1060 case DIOCGPART: 1061 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1062 ((struct partinfo *)addr)->part = 1063 &sd->sc_dk.dk_label->d_partitions[part]; 1064 return (0); 1065 1066 case DIOCWDINFO: 1067 case DIOCSDINFO: 1068 #ifdef __HAVE_OLD_DISKLABEL 1069 case ODIOCWDINFO: 1070 case ODIOCSDINFO: 1071 #endif 1072 { 1073 struct disklabel *lp; 1074 1075 if ((flag & FWRITE) == 0) 1076 return (EBADF); 1077 1078 #ifdef __HAVE_OLD_DISKLABEL 1079 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1080 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1081 if (newlabel == NULL) 1082 return EIO; 1083 memset(newlabel, 0, sizeof newlabel); 1084 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1085 lp = newlabel; 1086 } else 1087 #endif 1088 lp = (struct disklabel *)addr; 1089 1090 mutex_enter(&sd->sc_dk.dk_openlock); 1091 sd->flags |= SDF_LABELLING; 1092 1093 error = setdisklabel(sd->sc_dk.dk_label, 1094 lp, /*sd->sc_dk.dk_openmask : */0, 1095 sd->sc_dk.dk_cpulabel); 1096 if (error == 0) { 1097 if (cmd == DIOCWDINFO 1098 #ifdef __HAVE_OLD_DISKLABEL 1099 || cmd == ODIOCWDINFO 1100 #endif 1101 ) 1102 error = writedisklabel(SDLABELDEV(dev), 1103 sdstrategy, sd->sc_dk.dk_label, 1104 sd->sc_dk.dk_cpulabel); 1105 } 1106 1107 sd->flags &= ~SDF_LABELLING; 1108 mutex_exit(&sd->sc_dk.dk_openlock); 1109 #ifdef __HAVE_OLD_DISKLABEL 1110 if (newlabel != NULL) 1111 free(newlabel, M_TEMP); 1112 #endif 1113 return (error); 1114 } 1115 1116 case DIOCKLABEL: 1117 if (*(int *)addr) 1118 periph->periph_flags |= PERIPH_KEEP_LABEL; 1119 else 1120 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1121 return (0); 1122 1123 case DIOCWLABEL: 1124 if ((flag & FWRITE) == 0) 1125 return (EBADF); 1126 if (*(int *)addr) 1127 sd->flags |= SDF_WLABEL; 1128 else 1129 sd->flags &= ~SDF_WLABEL; 1130 return (0); 1131 1132 case DIOCLOCK: 1133 if (periph->periph_flags & PERIPH_REMOVABLE) 1134 return (scsipi_prevent(periph, 1135 (*(int *)addr) ? 1136 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1137 else 1138 return (ENOTTY); 1139 1140 case DIOCEJECT: 1141 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1142 return (ENOTTY); 1143 if (*(int *)addr == 0) { 1144 /* 1145 * Don't force eject: check that we are the only 1146 * partition open. If so, unlock it. 1147 */ 1148 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1149 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1150 sd->sc_dk.dk_openmask) { 1151 error = scsipi_prevent(periph, SPAMR_ALLOW, 1152 XS_CTL_IGNORE_NOT_READY); 1153 if (error) 1154 return (error); 1155 } else { 1156 return (EBUSY); 1157 } 1158 } 1159 /* FALLTHROUGH */ 1160 case ODIOCEJECT: 1161 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1162 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1163 1164 case DIOCGDEFLABEL: 1165 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1166 return (0); 1167 1168 #ifdef __HAVE_OLD_DISKLABEL 1169 case ODIOCGDEFLABEL: 1170 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1171 if (newlabel == NULL) 1172 return EIO; 1173 sdgetdefaultlabel(sd, newlabel); 1174 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1175 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1176 else 1177 error = ENOTTY; 1178 free(newlabel, M_TEMP); 1179 return error; 1180 #endif 1181 1182 case DIOCGCACHE: 1183 return (sd_getcache(sd, (int *) addr)); 1184 1185 case DIOCSCACHE: 1186 if ((flag & FWRITE) == 0) 1187 return (EBADF); 1188 return (sd_setcache(sd, *(int *) addr)); 1189 1190 case DIOCCACHESYNC: 1191 /* 1192 * XXX Do we really need to care about having a writable 1193 * file descriptor here? 1194 */ 1195 if ((flag & FWRITE) == 0) 1196 return (EBADF); 1197 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1198 error = sd_flush(sd, 0); 1199 if (error) 1200 sd->flags &= ~SDF_FLUSHING; 1201 else 1202 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1203 } else 1204 error = 0; 1205 return (error); 1206 1207 case DIOCAWEDGE: 1208 { 1209 struct dkwedge_info *dkw = (void *) addr; 1210 1211 if ((flag & FWRITE) == 0) 1212 return (EBADF); 1213 1214 /* If the ioctl happens here, the parent is us. */ 1215 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1216 sizeof(dkw->dkw_parent)); 1217 return (dkwedge_add(dkw)); 1218 } 1219 1220 case DIOCDWEDGE: 1221 { 1222 struct dkwedge_info *dkw = (void *) addr; 1223 1224 if ((flag & FWRITE) == 0) 1225 return (EBADF); 1226 1227 /* If the ioctl happens here, the parent is us. */ 1228 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1229 sizeof(dkw->dkw_parent)); 1230 return (dkwedge_del(dkw)); 1231 } 1232 1233 case DIOCLWEDGES: 1234 { 1235 struct dkwedge_list *dkwl = (void *) addr; 1236 1237 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1238 } 1239 1240 default: 1241 if (part != RAW_PART) 1242 return (ENOTTY); 1243 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1244 } 1245 1246 #ifdef DIAGNOSTIC 1247 panic("sdioctl: impossible"); 1248 #endif 1249 } 1250 1251 static void 1252 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1253 { 1254 1255 memset(lp, 0, sizeof(struct disklabel)); 1256 1257 lp->d_secsize = sd->params.blksize; 1258 lp->d_ntracks = sd->params.heads; 1259 lp->d_nsectors = sd->params.sectors; 1260 lp->d_ncylinders = sd->params.cyls; 1261 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1262 1263 switch (scsipi_periph_bustype(sd->sc_periph)) { 1264 case SCSIPI_BUSTYPE_SCSI: 1265 lp->d_type = DTYPE_SCSI; 1266 break; 1267 case SCSIPI_BUSTYPE_ATAPI: 1268 lp->d_type = DTYPE_ATAPI; 1269 break; 1270 } 1271 /* 1272 * XXX 1273 * We could probe the mode pages to figure out what kind of disc it is. 1274 * Is this worthwhile? 1275 */ 1276 strncpy(lp->d_typename, sd->name, 16); 1277 strncpy(lp->d_packname, "fictitious", 16); 1278 lp->d_secperunit = sd->params.disksize; 1279 lp->d_rpm = sd->params.rot_rate; 1280 lp->d_interleave = 1; 1281 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1282 D_REMOVABLE : 0; 1283 1284 lp->d_partitions[RAW_PART].p_offset = 0; 1285 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1286 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1287 lp->d_npartitions = RAW_PART + 1; 1288 1289 lp->d_magic = DISKMAGIC; 1290 lp->d_magic2 = DISKMAGIC; 1291 lp->d_checksum = dkcksum(lp); 1292 } 1293 1294 1295 /* 1296 * Load the label information on the named device 1297 */ 1298 static int 1299 sdgetdisklabel(struct sd_softc *sd) 1300 { 1301 struct disklabel *lp = sd->sc_dk.dk_label; 1302 const char *errstring; 1303 1304 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1305 1306 sdgetdefaultlabel(sd, lp); 1307 1308 if (lp->d_secpercyl == 0) { 1309 lp->d_secpercyl = 100; 1310 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1311 } 1312 1313 /* 1314 * Call the generic disklabel extraction routine 1315 */ 1316 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1317 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1318 if (errstring) { 1319 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1320 return EIO; 1321 } 1322 return 0; 1323 } 1324 1325 static void 1326 sd_shutdown(void *arg) 1327 { 1328 struct sd_softc *sd = arg; 1329 1330 /* 1331 * If the disk cache needs to be flushed, and the disk supports 1332 * it, flush it. We're cold at this point, so we poll for 1333 * completion. 1334 */ 1335 if ((sd->flags & SDF_DIRTY) != 0) { 1336 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1337 aprint_error_dev(sd->sc_dev, 1338 "cache synchronization failed\n"); 1339 sd->flags &= ~SDF_FLUSHING; 1340 } else 1341 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1342 } 1343 } 1344 1345 static bool 1346 sd_suspend(device_t dv PMF_FN_ARGS) 1347 { 1348 struct sd_softc *sd = device_private(dv); 1349 1350 sd_shutdown(sd); /* XXX no need to poll */ 1351 return true; 1352 } 1353 1354 /* 1355 * Check Errors 1356 */ 1357 static int 1358 sd_interpret_sense(struct scsipi_xfer *xs) 1359 { 1360 struct scsipi_periph *periph = xs->xs_periph; 1361 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1362 struct sd_softc *sd = device_private(periph->periph_dev); 1363 int s, error, retval = EJUSTRETURN; 1364 1365 /* 1366 * If the periph is already recovering, just do the normal 1367 * error processing. 1368 */ 1369 if (periph->periph_flags & PERIPH_RECOVERING) 1370 return (retval); 1371 1372 /* 1373 * Ignore errors from accessing illegal fields (e.g. trying to 1374 * lock the door of a digicam, which doesn't have a door that 1375 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1376 */ 1377 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1378 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1379 sense->asc == 0x24 && 1380 sense->ascq == 0x00) { /* Illegal field in CDB */ 1381 if (!(xs->xs_control & XS_CTL_SILENT)) { 1382 scsipi_printaddr(periph); 1383 printf("no door lock\n"); 1384 } 1385 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1386 return (retval); 1387 } 1388 1389 1390 1391 /* 1392 * If the device is not open yet, let the generic code handle it. 1393 */ 1394 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1395 return (retval); 1396 1397 /* 1398 * If it isn't a extended or extended/deferred error, let 1399 * the generic code handle it. 1400 */ 1401 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1402 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1403 return (retval); 1404 1405 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1406 sense->asc == 0x4) { 1407 if (sense->ascq == 0x01) { 1408 /* 1409 * Unit In The Process Of Becoming Ready. 1410 */ 1411 printf("%s: waiting for pack to spin up...\n", 1412 device_xname(sd->sc_dev)); 1413 if (!callout_pending(&periph->periph_callout)) 1414 scsipi_periph_freeze(periph, 1); 1415 callout_reset(&periph->periph_callout, 1416 5 * hz, scsipi_periph_timed_thaw, periph); 1417 retval = ERESTART; 1418 } else if (sense->ascq == 0x02) { 1419 printf("%s: pack is stopped, restarting...\n", 1420 device_xname(sd->sc_dev)); 1421 s = splbio(); 1422 periph->periph_flags |= PERIPH_RECOVERING; 1423 splx(s); 1424 error = scsipi_start(periph, SSS_START, 1425 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1426 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1427 if (error) { 1428 aprint_error_dev(sd->sc_dev, 1429 "unable to restart pack\n"); 1430 retval = error; 1431 } else 1432 retval = ERESTART; 1433 s = splbio(); 1434 periph->periph_flags &= ~PERIPH_RECOVERING; 1435 splx(s); 1436 } 1437 } 1438 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1439 sense->asc == 0x31 && 1440 sense->ascq == 0x00) { /* maybe for any asq ? */ 1441 /* Medium Format Corrupted */ 1442 retval = EFTYPE; 1443 } 1444 return (retval); 1445 } 1446 1447 1448 static int 1449 sdsize(dev_t dev) 1450 { 1451 struct sd_softc *sd; 1452 int part, unit, omask; 1453 int size; 1454 1455 unit = SDUNIT(dev); 1456 sd = device_lookup_private(&sd_cd, unit); 1457 if (sd == NULL) 1458 return (-1); 1459 1460 if (!device_is_active(sd->sc_dev)) 1461 return (-1); 1462 1463 part = SDPART(dev); 1464 omask = sd->sc_dk.dk_openmask & (1 << part); 1465 1466 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1467 return (-1); 1468 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1469 size = -1; 1470 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1471 size = -1; 1472 else 1473 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1474 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1475 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1476 return (-1); 1477 return (size); 1478 } 1479 1480 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1481 static struct scsipi_xfer sx; 1482 static int sddoingadump; 1483 1484 /* 1485 * dump all of physical memory into the partition specified, starting 1486 * at offset 'dumplo' into the partition. 1487 */ 1488 static int 1489 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1490 { 1491 struct sd_softc *sd; /* disk unit to do the I/O */ 1492 struct disklabel *lp; /* disk's disklabel */ 1493 int unit, part; 1494 int sectorsize; /* size of a disk sector */ 1495 int nsects; /* number of sectors in partition */ 1496 int sectoff; /* sector offset of partition */ 1497 int totwrt; /* total number of sectors left to write */ 1498 int nwrt; /* current number of sectors to write */ 1499 struct scsipi_rw_10 cmd; /* write command */ 1500 struct scsipi_xfer *xs; /* ... convenience */ 1501 struct scsipi_periph *periph; 1502 struct scsipi_channel *chan; 1503 1504 /* Check if recursive dump; if so, punt. */ 1505 if (sddoingadump) 1506 return (EFAULT); 1507 1508 /* Mark as active early. */ 1509 sddoingadump = 1; 1510 1511 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1512 part = SDPART(dev); 1513 1514 /* Check for acceptable drive number. */ 1515 sd = device_lookup_private(&sd_cd, unit); 1516 if (sd == NULL) 1517 return (ENXIO); 1518 1519 if (!device_is_active(sd->sc_dev)) 1520 return (ENODEV); 1521 1522 periph = sd->sc_periph; 1523 chan = periph->periph_channel; 1524 1525 /* Make sure it was initialized. */ 1526 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1527 return (ENXIO); 1528 1529 /* Convert to disk sectors. Request must be a multiple of size. */ 1530 lp = sd->sc_dk.dk_label; 1531 sectorsize = lp->d_secsize; 1532 if ((size % sectorsize) != 0) 1533 return (EFAULT); 1534 totwrt = size / sectorsize; 1535 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1536 1537 nsects = lp->d_partitions[part].p_size; 1538 sectoff = lp->d_partitions[part].p_offset; 1539 1540 /* Check transfer bounds against partition size. */ 1541 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1542 return (EINVAL); 1543 1544 /* Offset block number to start of partition. */ 1545 blkno += sectoff; 1546 1547 xs = &sx; 1548 1549 while (totwrt > 0) { 1550 nwrt = totwrt; /* XXX */ 1551 #ifndef SD_DUMP_NOT_TRUSTED 1552 /* 1553 * Fill out the scsi command 1554 */ 1555 memset(&cmd, 0, sizeof(cmd)); 1556 cmd.opcode = WRITE_10; 1557 _lto4b(blkno, cmd.addr); 1558 _lto2b(nwrt, cmd.length); 1559 /* 1560 * Fill out the scsipi_xfer structure 1561 * Note: we cannot sleep as we may be an interrupt 1562 * don't use scsipi_command() as it may want to wait 1563 * for an xs. 1564 */ 1565 memset(xs, 0, sizeof(sx)); 1566 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1567 XS_CTL_DATA_OUT; 1568 xs->xs_status = 0; 1569 xs->xs_periph = periph; 1570 xs->xs_retries = SDRETRIES; 1571 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1572 xs->cmd = (struct scsipi_generic *)&cmd; 1573 xs->cmdlen = sizeof(cmd); 1574 xs->resid = nwrt * sectorsize; 1575 xs->error = XS_NOERROR; 1576 xs->bp = 0; 1577 xs->data = va; 1578 xs->datalen = nwrt * sectorsize; 1579 callout_init(&xs->xs_callout, 0); 1580 1581 /* 1582 * Pass all this info to the scsi driver. 1583 */ 1584 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1585 if ((xs->xs_status & XS_STS_DONE) == 0 || 1586 xs->error != XS_NOERROR) 1587 return (EIO); 1588 #else /* SD_DUMP_NOT_TRUSTED */ 1589 /* Let's just talk about this first... */ 1590 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1591 delay(500 * 1000); /* half a second */ 1592 #endif /* SD_DUMP_NOT_TRUSTED */ 1593 1594 /* update block count */ 1595 totwrt -= nwrt; 1596 blkno += nwrt; 1597 va = (char *)va + sectorsize * nwrt; 1598 } 1599 sddoingadump = 0; 1600 return (0); 1601 } 1602 1603 static int 1604 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1605 int page, int flags, int *big) 1606 { 1607 1608 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1609 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1610 *big = 1; 1611 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1612 size + sizeof(struct scsi_mode_parameter_header_10), 1613 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1614 } else { 1615 *big = 0; 1616 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1617 size + sizeof(struct scsi_mode_parameter_header_6), 1618 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1619 } 1620 } 1621 1622 static int 1623 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1624 int flags, int big) 1625 { 1626 1627 if (big) { 1628 struct scsi_mode_parameter_header_10 *header = sense; 1629 1630 _lto2b(0, header->data_length); 1631 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1632 size + sizeof(struct scsi_mode_parameter_header_10), 1633 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1634 } else { 1635 struct scsi_mode_parameter_header_6 *header = sense; 1636 1637 header->data_length = 0; 1638 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1639 size + sizeof(struct scsi_mode_parameter_header_6), 1640 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1641 } 1642 } 1643 1644 /* 1645 * sd_validate_blksize: 1646 * 1647 * Validate the block size. Print error if periph is specified, 1648 */ 1649 static int 1650 sd_validate_blksize(struct scsipi_periph *periph, int len) 1651 { 1652 1653 switch (len) { 1654 case 256: 1655 case 512: 1656 case 1024: 1657 case 2048: 1658 case 4096: 1659 return 1; 1660 } 1661 1662 if (periph) { 1663 scsipi_printaddr(periph); 1664 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1665 (len ^ (1 << (ffs(len) - 1))) ? 1666 "preposterous" : "unsupported", 1667 len, SD_DEFAULT_BLKSIZE); 1668 } 1669 1670 return 0; 1671 } 1672 1673 /* 1674 * sd_read_capacity: 1675 * 1676 * Find out from the device what its capacity is. 1677 */ 1678 static u_int64_t 1679 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1680 { 1681 union { 1682 struct scsipi_read_capacity_10 cmd; 1683 struct scsipi_read_capacity_16 cmd16; 1684 } cmd; 1685 union { 1686 struct scsipi_read_capacity_10_data data; 1687 struct scsipi_read_capacity_16_data data16; 1688 } *datap; 1689 uint64_t rv; 1690 1691 memset(&cmd, 0, sizeof(cmd)); 1692 cmd.cmd.opcode = READ_CAPACITY_10; 1693 1694 /* 1695 * Don't allocate data buffer on stack; 1696 * The lower driver layer might use the same stack and 1697 * if it uses region which is in the same cacheline, 1698 * cache flush ops against the data buffer won't work properly. 1699 */ 1700 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1701 if (datap == NULL) 1702 return 0; 1703 1704 /* 1705 * If the command works, interpret the result as a 4 byte 1706 * number of blocks 1707 */ 1708 rv = 0; 1709 memset(datap, 0, sizeof(datap->data)); 1710 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1711 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1712 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1713 goto out; 1714 1715 if (_4btol(datap->data.addr) != 0xffffffff) { 1716 *blksize = _4btol(datap->data.length); 1717 rv = _4btol(datap->data.addr) + 1; 1718 goto out; 1719 } 1720 1721 /* 1722 * Device is larger than can be reflected by READ CAPACITY (10). 1723 * Try READ CAPACITY (16). 1724 */ 1725 1726 memset(&cmd, 0, sizeof(cmd)); 1727 cmd.cmd16.opcode = READ_CAPACITY_16; 1728 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1729 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1730 1731 memset(datap, 0, sizeof(datap->data16)); 1732 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1733 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1734 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1735 goto out; 1736 1737 *blksize = _4btol(datap->data16.length); 1738 rv = _8btol(datap->data16.addr) + 1; 1739 1740 out: 1741 free(datap, M_TEMP); 1742 return rv; 1743 } 1744 1745 static int 1746 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1747 { 1748 struct { 1749 struct scsi_mode_parameter_header_6 header; 1750 /* no block descriptor */ 1751 u_int8_t pg_code; /* page code (should be 6) */ 1752 u_int8_t pg_length; /* page length (should be 11) */ 1753 u_int8_t wcd; /* bit0: cache disable */ 1754 u_int8_t lbs[2]; /* logical block size */ 1755 u_int8_t size[5]; /* number of log. blocks */ 1756 u_int8_t pp; /* power/performance */ 1757 u_int8_t flags; 1758 u_int8_t resvd; 1759 } scsipi_sense; 1760 u_int64_t blocks; 1761 int error, blksize; 1762 1763 /* 1764 * sd_read_capacity (ie "read capacity") and mode sense page 6 1765 * give the same information. Do both for now, and check 1766 * for consistency. 1767 * XXX probably differs for removable media 1768 */ 1769 dp->blksize = SD_DEFAULT_BLKSIZE; 1770 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1771 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1772 1773 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1774 &scsipi_sense.header, sizeof(scsipi_sense), 1775 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1776 1777 if (error != 0) 1778 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1779 1780 dp->blksize = blksize; 1781 if (!sd_validate_blksize(NULL, dp->blksize)) 1782 dp->blksize = _2btol(scsipi_sense.lbs); 1783 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1784 dp->blksize = SD_DEFAULT_BLKSIZE; 1785 1786 /* 1787 * Create a pseudo-geometry. 1788 */ 1789 dp->heads = 64; 1790 dp->sectors = 32; 1791 dp->cyls = blocks / (dp->heads * dp->sectors); 1792 dp->disksize = _5btol(scsipi_sense.size); 1793 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1794 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1795 (unsigned long long)dp->disksize, 1796 (unsigned long long)blocks); 1797 dp->disksize = blocks; 1798 } 1799 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1800 1801 return (SDGP_RESULT_OK); 1802 } 1803 1804 /* 1805 * Get the scsi driver to send a full inquiry to the * device and use the 1806 * results to fill out the disk parameter structure. 1807 */ 1808 static int 1809 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1810 { 1811 u_int64_t blocks; 1812 int error, blksize; 1813 #if 0 1814 int i; 1815 u_int8_t *p; 1816 #endif 1817 1818 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1819 flags); 1820 if (blocks == 0) { 1821 struct scsipi_read_format_capacities cmd; 1822 struct { 1823 struct scsipi_capacity_list_header header; 1824 struct scsipi_capacity_descriptor desc; 1825 } __packed data; 1826 1827 memset(&cmd, 0, sizeof(cmd)); 1828 memset(&data, 0, sizeof(data)); 1829 cmd.opcode = READ_FORMAT_CAPACITIES; 1830 _lto2b(sizeof(data), cmd.length); 1831 1832 error = scsipi_command(sd->sc_periph, 1833 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1834 SDRETRIES, 20000, NULL, 1835 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1836 if (error == EFTYPE) { 1837 /* Medium Format Corrupted, handle as not formatted */ 1838 return (SDGP_RESULT_UNFORMATTED); 1839 } 1840 if (error || data.header.length == 0) 1841 return (SDGP_RESULT_OFFLINE); 1842 1843 #if 0 1844 printf("rfc: length=%d\n", data.header.length); 1845 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"); 1846 #endif 1847 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1848 case SCSIPI_CAP_DESC_CODE_RESERVED: 1849 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1850 break; 1851 1852 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1853 return (SDGP_RESULT_UNFORMATTED); 1854 1855 case SCSIPI_CAP_DESC_CODE_NONE: 1856 return (SDGP_RESULT_OFFLINE); 1857 } 1858 1859 dp->disksize = blocks = _4btol(data.desc.nblks); 1860 if (blocks == 0) 1861 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1862 1863 blksize = _3btol(data.desc.blklen); 1864 1865 } else if (!sd_validate_blksize(NULL, blksize)) { 1866 struct sd_mode_sense_data scsipi_sense; 1867 int big, bsize; 1868 struct scsi_general_block_descriptor *bdesc; 1869 1870 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1871 error = sd_mode_sense(sd, 0, &scsipi_sense, 1872 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1873 if (!error) { 1874 if (big) { 1875 bdesc = (void *)(&scsipi_sense.header.big + 1); 1876 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1877 } else { 1878 bdesc = (void *)(&scsipi_sense.header.small + 1); 1879 bsize = scsipi_sense.header.small.blk_desc_len; 1880 } 1881 1882 #if 0 1883 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1884 printf("page 0 bsize=%d\n", bsize); 1885 printf("page 0 ok\n"); 1886 #endif 1887 1888 if (bsize >= 8) { 1889 blksize = _3btol(bdesc->blklen); 1890 } 1891 } 1892 } 1893 1894 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1895 blksize = SD_DEFAULT_BLKSIZE; 1896 1897 dp->blksize = blksize; 1898 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1899 return (0); 1900 } 1901 1902 static int 1903 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1904 { 1905 struct sd_mode_sense_data scsipi_sense; 1906 int error; 1907 int big, byte2; 1908 size_t poffset; 1909 union scsi_disk_pages *pages; 1910 1911 byte2 = SMS_DBD; 1912 again: 1913 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1914 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1915 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1916 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1917 flags | XS_CTL_SILENT, &big); 1918 if (error) { 1919 if (byte2 == SMS_DBD) { 1920 /* No result; try once more with DBD off */ 1921 byte2 = 0; 1922 goto again; 1923 } 1924 return (error); 1925 } 1926 1927 if (big) { 1928 poffset = sizeof scsipi_sense.header.big; 1929 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1930 } else { 1931 poffset = sizeof scsipi_sense.header.small; 1932 poffset += scsipi_sense.header.small.blk_desc_len; 1933 } 1934 1935 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1936 return ERESTART; 1937 1938 pages = (void *)((u_long)&scsipi_sense + poffset); 1939 #if 0 1940 { 1941 size_t i; 1942 u_int8_t *p; 1943 1944 printf("page 4 sense:"); 1945 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1946 i--, p++) 1947 printf(" %02x", *p); 1948 printf("\n"); 1949 printf("page 4 pg_code=%d sense=%p/%p\n", 1950 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1951 } 1952 #endif 1953 1954 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1955 return (ERESTART); 1956 1957 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1958 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1959 _3btol(pages->rigid_geometry.ncyl), 1960 pages->rigid_geometry.nheads, 1961 _2btol(pages->rigid_geometry.st_cyl_wp), 1962 _2btol(pages->rigid_geometry.st_cyl_rwc), 1963 _2btol(pages->rigid_geometry.land_zone))); 1964 1965 /* 1966 * KLUDGE!! (for zone recorded disks) 1967 * give a number of sectors so that sec * trks * cyls 1968 * is <= disk_size 1969 * can lead to wasted space! THINK ABOUT THIS ! 1970 */ 1971 dp->heads = pages->rigid_geometry.nheads; 1972 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1973 if (dp->heads == 0 || dp->cyls == 0) 1974 return (ERESTART); 1975 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1976 1977 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1978 if (dp->rot_rate == 0) 1979 dp->rot_rate = 3600; 1980 1981 #if 0 1982 printf("page 4 ok\n"); 1983 #endif 1984 return (0); 1985 } 1986 1987 static int 1988 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1989 { 1990 struct sd_mode_sense_data scsipi_sense; 1991 int error; 1992 int big, byte2; 1993 size_t poffset; 1994 union scsi_disk_pages *pages; 1995 1996 byte2 = SMS_DBD; 1997 again: 1998 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1999 error = sd_mode_sense(sd, 0, &scsipi_sense, 2000 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2001 sizeof(scsipi_sense.pages.flex_geometry), 5, 2002 flags | XS_CTL_SILENT, &big); 2003 if (error) { 2004 if (byte2 == SMS_DBD) { 2005 /* No result; try once more with DBD off */ 2006 byte2 = 0; 2007 goto again; 2008 } 2009 return (error); 2010 } 2011 2012 if (big) { 2013 poffset = sizeof scsipi_sense.header.big; 2014 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2015 } else { 2016 poffset = sizeof scsipi_sense.header.small; 2017 poffset += scsipi_sense.header.small.blk_desc_len; 2018 } 2019 2020 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2021 return ERESTART; 2022 2023 pages = (void *)((u_long)&scsipi_sense + poffset); 2024 #if 0 2025 { 2026 size_t i; 2027 u_int8_t *p; 2028 2029 printf("page 5 sense:"); 2030 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2031 i--, p++) 2032 printf(" %02x", *p); 2033 printf("\n"); 2034 printf("page 5 pg_code=%d sense=%p/%p\n", 2035 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2036 } 2037 #endif 2038 2039 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2040 return (ERESTART); 2041 2042 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2043 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2044 _3btol(pages->flex_geometry.ncyl), 2045 pages->flex_geometry.nheads, 2046 pages->flex_geometry.ph_sec_tr, 2047 _2btol(pages->flex_geometry.bytes_s))); 2048 2049 dp->heads = pages->flex_geometry.nheads; 2050 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2051 dp->sectors = pages->flex_geometry.ph_sec_tr; 2052 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2053 return (ERESTART); 2054 2055 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2056 if (dp->rot_rate == 0) 2057 dp->rot_rate = 3600; 2058 2059 #if 0 2060 printf("page 5 ok\n"); 2061 #endif 2062 return (0); 2063 } 2064 2065 static int 2066 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2067 { 2068 int error; 2069 2070 /* 2071 * If offline, the SDEV_MEDIA_LOADED flag will be 2072 * cleared by the caller if necessary. 2073 */ 2074 if (sd->type == T_SIMPLE_DIRECT) { 2075 error = sd_get_simplifiedparms(sd, dp, flags); 2076 if (!error) 2077 disk_blocksize(&sd->sc_dk, dp->blksize); 2078 return (error); 2079 } 2080 2081 error = sd_get_capacity(sd, dp, flags); 2082 if (error) 2083 return (error); 2084 2085 disk_blocksize(&sd->sc_dk, dp->blksize); 2086 2087 if (sd->type == T_OPTICAL) 2088 goto page0; 2089 2090 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2091 if (!sd_get_parms_page5(sd, dp, flags) || 2092 !sd_get_parms_page4(sd, dp, flags)) 2093 return (SDGP_RESULT_OK); 2094 } else { 2095 if (!sd_get_parms_page4(sd, dp, flags) || 2096 !sd_get_parms_page5(sd, dp, flags)) 2097 return (SDGP_RESULT_OK); 2098 } 2099 2100 page0: 2101 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2102 /* Try calling driver's method for figuring out geometry. */ 2103 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2104 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2105 (sd->sc_periph, dp, dp->disksize)) { 2106 /* 2107 * Use adaptec standard fictitious geometry 2108 * this depends on which controller (e.g. 1542C is 2109 * different. but we have to put SOMETHING here..) 2110 */ 2111 dp->heads = 64; 2112 dp->sectors = 32; 2113 dp->cyls = dp->disksize / (64 * 32); 2114 } 2115 dp->rot_rate = 3600; 2116 return (SDGP_RESULT_OK); 2117 } 2118 2119 static int 2120 sd_flush(struct sd_softc *sd, int flags) 2121 { 2122 struct scsipi_periph *periph = sd->sc_periph; 2123 struct scsi_synchronize_cache_10 cmd; 2124 2125 /* 2126 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2127 * We issue with address 0 length 0, which should be 2128 * interpreted by the device as "all remaining blocks 2129 * starting at address 0". We ignore ILLEGAL REQUEST 2130 * in the event that the command is not supported by 2131 * the device, and poll for completion so that we know 2132 * that the cache has actually been flushed. 2133 * 2134 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2135 * command, as indicated by our quirks flags. 2136 * 2137 * XXX What about older devices? 2138 */ 2139 if (periph->periph_version < 2 || 2140 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2141 return (0); 2142 2143 sd->flags |= SDF_FLUSHING; 2144 memset(&cmd, 0, sizeof(cmd)); 2145 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2146 2147 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2148 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2149 } 2150 2151 static int 2152 sd_getcache(struct sd_softc *sd, int *bitsp) 2153 { 2154 struct scsipi_periph *periph = sd->sc_periph; 2155 struct sd_mode_sense_data scsipi_sense; 2156 int error, bits = 0; 2157 int big; 2158 union scsi_disk_pages *pages; 2159 2160 if (periph->periph_version < 2) 2161 return (EOPNOTSUPP); 2162 2163 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2164 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2165 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2166 if (error) 2167 return (error); 2168 2169 if (big) 2170 pages = (void *)(&scsipi_sense.header.big + 1); 2171 else 2172 pages = (void *)(&scsipi_sense.header.small + 1); 2173 2174 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2175 bits |= DKCACHE_READ; 2176 if (pages->caching_params.flags & CACHING_WCE) 2177 bits |= DKCACHE_WRITE; 2178 if (pages->caching_params.pg_code & PGCODE_PS) 2179 bits |= DKCACHE_SAVE; 2180 2181 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2182 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2183 sizeof(scsipi_sense.pages.caching_params), 2184 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2185 if (error == 0) { 2186 if (big) 2187 pages = (void *)(&scsipi_sense.header.big + 1); 2188 else 2189 pages = (void *)(&scsipi_sense.header.small + 1); 2190 2191 if (pages->caching_params.flags & CACHING_RCD) 2192 bits |= DKCACHE_RCHANGE; 2193 if (pages->caching_params.flags & CACHING_WCE) 2194 bits |= DKCACHE_WCHANGE; 2195 } 2196 2197 *bitsp = bits; 2198 2199 return (0); 2200 } 2201 2202 static int 2203 sd_setcache(struct sd_softc *sd, int bits) 2204 { 2205 struct scsipi_periph *periph = sd->sc_periph; 2206 struct sd_mode_sense_data scsipi_sense; 2207 int error; 2208 uint8_t oflags, byte2 = 0; 2209 int big; 2210 union scsi_disk_pages *pages; 2211 2212 if (periph->periph_version < 2) 2213 return (EOPNOTSUPP); 2214 2215 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2216 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2217 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2218 if (error) 2219 return (error); 2220 2221 if (big) 2222 pages = (void *)(&scsipi_sense.header.big + 1); 2223 else 2224 pages = (void *)(&scsipi_sense.header.small + 1); 2225 2226 oflags = pages->caching_params.flags; 2227 2228 if (bits & DKCACHE_READ) 2229 pages->caching_params.flags &= ~CACHING_RCD; 2230 else 2231 pages->caching_params.flags |= CACHING_RCD; 2232 2233 if (bits & DKCACHE_WRITE) 2234 pages->caching_params.flags |= CACHING_WCE; 2235 else 2236 pages->caching_params.flags &= ~CACHING_WCE; 2237 2238 if (oflags == pages->caching_params.flags) 2239 return (0); 2240 2241 pages->caching_params.pg_code &= PGCODE_MASK; 2242 2243 if (bits & DKCACHE_SAVE) 2244 byte2 |= SMS_SP; 2245 2246 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2247 sizeof(struct scsi_mode_page_header) + 2248 pages->caching_params.pg_length, 0, big)); 2249 } 2250 2251 static void 2252 sd_set_properties(struct sd_softc *sd) 2253 { 2254 prop_dictionary_t disk_info, odisk_info, geom; 2255 2256 disk_info = prop_dictionary_create(); 2257 2258 geom = prop_dictionary_create(); 2259 2260 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2261 sd->params.disksize); 2262 2263 prop_dictionary_set_uint32(geom, "sector-size", 2264 sd->params.blksize); 2265 2266 prop_dictionary_set_uint16(geom, "sectors-per-track", 2267 sd->params.sectors); 2268 2269 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2270 sd->params.heads); 2271 2272 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2273 sd->params.cyls); 2274 2275 prop_dictionary_set(disk_info, "geometry", geom); 2276 prop_object_release(geom); 2277 2278 prop_dictionary_set(device_properties(sd->sc_dev), 2279 "disk-info", disk_info); 2280 2281 /* 2282 * Don't release disk_info here; we keep a reference to it. 2283 * disk_detach() will release it when we go away. 2284 */ 2285 2286 odisk_info = sd->sc_dk.dk_info; 2287 sd->sc_dk.dk_info = disk_info; 2288 if (odisk_info) 2289 prop_object_release(odisk_info); 2290 } 2291