1 /* $NetBSD: sd.c,v 1.273 2008/04/28 20:23:58 martin 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 1.273 2008/04/28 20:23:58 martin 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(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->type = (sa->sa_inqbuf.type & SID_TYPE); 227 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 228 if (sd->type == T_SIMPLE_DIRECT) 229 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 230 231 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 232 periph->periph_version == 0) 233 sd->flags |= SDF_ANCIENT; 234 235 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 236 237 callout_init(&sd->sc_callout, 0); 238 239 /* 240 * Store information needed to contact our base driver 241 */ 242 sd->sc_periph = periph; 243 244 periph->periph_dev = &sd->sc_dev; 245 periph->periph_switch = &sd_switch; 246 247 /* 248 * Increase our openings to the maximum-per-periph 249 * supported by the adapter. This will either be 250 * clamped down or grown by the adapter if necessary. 251 */ 252 periph->periph_openings = 253 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 254 periph->periph_flags |= PERIPH_GROW_OPENINGS; 255 256 /* 257 * Initialize and attach the disk structure. 258 */ 259 disk_init(&sd->sc_dk, device_xname(&sd->sc_dev), &sddkdriver); 260 disk_attach(&sd->sc_dk); 261 262 /* 263 * Use the subdriver to request information regarding the drive. 264 */ 265 aprint_naive("\n"); 266 aprint_normal("\n"); 267 268 error = scsipi_test_unit_ready(periph, 269 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 270 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 271 272 if (error) 273 result = SDGP_RESULT_OFFLINE; 274 else 275 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 276 aprint_normal_dev(&sd->sc_dev, ""); 277 switch (result) { 278 case SDGP_RESULT_OK: 279 format_bytes(pbuf, sizeof(pbuf), 280 (u_int64_t)dp->disksize * dp->blksize); 281 aprint_normal( 282 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 283 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 284 (unsigned long long)dp->disksize); 285 break; 286 287 case SDGP_RESULT_OFFLINE: 288 aprint_normal("drive offline"); 289 break; 290 291 case SDGP_RESULT_UNFORMATTED: 292 aprint_normal("unformatted media"); 293 break; 294 295 #ifdef DIAGNOSTIC 296 default: 297 panic("sdattach: unknown result from get_parms"); 298 break; 299 #endif 300 } 301 aprint_normal("\n"); 302 303 /* 304 * Establish a shutdown hook so that we can ensure that 305 * our data has actually made it onto the platter at 306 * shutdown time. Note that this relies on the fact 307 * that the shutdown hook code puts us at the head of 308 * the list (thus guaranteeing that our hook runs before 309 * our ancestors'). 310 */ 311 if ((sd->sc_sdhook = 312 shutdownhook_establish(sd_shutdown, sd)) == NULL) 313 aprint_error_dev(&sd->sc_dev, "WARNING: unable to establish shutdown hook\n"); 314 315 if (!pmf_device_register(self, sd_suspend, NULL)) 316 aprint_error_dev(self, "couldn't establish power handler\n"); 317 318 #if NRND > 0 319 /* 320 * attach the device into the random source list 321 */ 322 rnd_attach_source(&sd->rnd_source, device_xname(&sd->sc_dev), 323 RND_TYPE_DISK, 0); 324 #endif 325 326 /* Discover wedges on this disk. */ 327 dkwedge_discover(&sd->sc_dk); 328 329 sd_set_properties(sd); 330 } 331 332 static int 333 sdactivate(struct device *self, enum devact act) 334 { 335 int rv = 0; 336 337 switch (act) { 338 case DVACT_ACTIVATE: 339 rv = EOPNOTSUPP; 340 break; 341 342 case DVACT_DEACTIVATE: 343 /* 344 * Nothing to do; we key off the device's DVF_ACTIVE. 345 */ 346 break; 347 } 348 return (rv); 349 } 350 351 static int 352 sddetach(struct device *self, int flags) 353 { 354 struct sd_softc *sd = device_private(self); 355 int s, bmaj, cmaj, i, mn; 356 357 /* locate the major number */ 358 bmaj = bdevsw_lookup_major(&sd_bdevsw); 359 cmaj = cdevsw_lookup_major(&sd_cdevsw); 360 361 /* Nuke the vnodes for any open instances */ 362 for (i = 0; i < MAXPARTITIONS; i++) { 363 mn = SDMINOR(device_unit(self), i); 364 vdevgone(bmaj, mn, mn, VBLK); 365 vdevgone(cmaj, mn, mn, VCHR); 366 } 367 368 /* kill any pending restart */ 369 callout_stop(&sd->sc_callout); 370 371 /* Delete all of our wedges. */ 372 dkwedge_delall(&sd->sc_dk); 373 374 s = splbio(); 375 376 /* Kill off any queued buffers. */ 377 bufq_drain(sd->buf_queue); 378 379 bufq_free(sd->buf_queue); 380 381 /* Kill off any pending commands. */ 382 scsipi_kill_pending(sd->sc_periph); 383 384 splx(s); 385 386 /* Detach from the disk list. */ 387 disk_detach(&sd->sc_dk); 388 disk_destroy(&sd->sc_dk); 389 390 pmf_device_deregister(self); 391 shutdownhook_disestablish(sd->sc_sdhook); 392 393 #if NRND > 0 394 /* Unhook the entropy source. */ 395 rnd_detach_source(&sd->rnd_source); 396 #endif 397 398 return (0); 399 } 400 401 /* 402 * open the device. Make sure the partition info is a up-to-date as can be. 403 */ 404 static int 405 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 406 { 407 struct sd_softc *sd; 408 struct scsipi_periph *periph; 409 struct scsipi_adapter *adapt; 410 int unit, part; 411 int error; 412 413 unit = SDUNIT(dev); 414 if (unit >= sd_cd.cd_ndevs) 415 return (ENXIO); 416 sd = sd_cd.cd_devs[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 = sd_cd.cd_devs[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, "cache synchronization failed\n"); 620 sd->flags &= ~SDF_FLUSHING; 621 } else 622 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 623 } 624 625 scsipi_wait_drain(periph); 626 627 if (periph->periph_flags & PERIPH_REMOVABLE) 628 scsipi_prevent(periph, SPAMR_ALLOW, 629 XS_CTL_IGNORE_ILLEGAL_REQUEST | 630 XS_CTL_IGNORE_NOT_READY | 631 XS_CTL_SILENT); 632 periph->periph_flags &= ~PERIPH_OPEN; 633 634 scsipi_wait_drain(periph); 635 636 scsipi_adapter_delref(adapt); 637 } 638 639 mutex_exit(&sd->sc_dk.dk_openlock); 640 return (0); 641 } 642 643 /* 644 * Actually translate the requested transfer into one the physical driver 645 * can understand. The transfer is described by a buf and will include 646 * only one physical transfer. 647 */ 648 static void 649 sdstrategy(struct buf *bp) 650 { 651 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 652 struct scsipi_periph *periph = sd->sc_periph; 653 struct disklabel *lp; 654 daddr_t blkno; 655 int s; 656 bool sector_aligned; 657 658 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 659 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 660 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 661 /* 662 * If the device has been made invalid, error out 663 */ 664 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 665 !device_is_active(&sd->sc_dev)) { 666 if (periph->periph_flags & PERIPH_OPEN) 667 bp->b_error = EIO; 668 else 669 bp->b_error = ENODEV; 670 goto done; 671 } 672 673 lp = sd->sc_dk.dk_label; 674 675 /* 676 * The transfer must be a whole number of blocks, offset must not be 677 * negative. 678 */ 679 if (lp->d_secsize == DEV_BSIZE) { 680 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 681 } else { 682 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 683 } 684 if (!sector_aligned || bp->b_blkno < 0) { 685 bp->b_error = EINVAL; 686 goto done; 687 } 688 /* 689 * If it's a null transfer, return immediatly 690 */ 691 if (bp->b_bcount == 0) 692 goto done; 693 694 /* 695 * Do bounds checking, adjust transfer. if error, process. 696 * If end of partition, just return. 697 */ 698 if (SDPART(bp->b_dev) == RAW_PART) { 699 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 700 sd->params.disksize512) <= 0) 701 goto done; 702 } else { 703 if (bounds_check_with_label(&sd->sc_dk, bp, 704 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 705 goto done; 706 } 707 708 /* 709 * Now convert the block number to absolute and put it in 710 * terms of the device's logical block size. 711 */ 712 if (lp->d_secsize == DEV_BSIZE) 713 blkno = bp->b_blkno; 714 else if (lp->d_secsize > DEV_BSIZE) 715 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 716 else 717 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 718 719 if (SDPART(bp->b_dev) != RAW_PART) 720 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 721 722 bp->b_rawblkno = blkno; 723 724 s = splbio(); 725 726 /* 727 * Place it in the queue of disk activities for this disk. 728 * 729 * XXX Only do disksort() if the current operating mode does not 730 * XXX include tagged queueing. 731 */ 732 BUFQ_PUT(sd->buf_queue, bp); 733 734 /* 735 * Tell the device to get going on the transfer if it's 736 * not doing anything, otherwise just wait for completion 737 */ 738 sdstart(sd->sc_periph); 739 740 splx(s); 741 return; 742 743 done: 744 /* 745 * Correctly set the buf to indicate a completed xfer 746 */ 747 bp->b_resid = bp->b_bcount; 748 biodone(bp); 749 } 750 751 /* 752 * sdstart looks to see if there is a buf waiting for the device 753 * and that the device is not already busy. If both are true, 754 * It dequeues the buf and creates a scsi command to perform the 755 * transfer in the buf. The transfer request will call scsipi_done 756 * on completion, which will in turn call this routine again 757 * so that the next queued transfer is performed. 758 * The bufs are queued by the strategy routine (sdstrategy) 759 * 760 * This routine is also called after other non-queued requests 761 * have been made of the scsi driver, to ensure that the queue 762 * continues to be drained. 763 * 764 * must be called at the correct (highish) spl level 765 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 766 */ 767 static void 768 sdstart(struct scsipi_periph *periph) 769 { 770 struct sd_softc *sd = (void *)periph->periph_dev; 771 struct disklabel *lp = sd->sc_dk.dk_label; 772 struct buf *bp = 0; 773 struct scsipi_rw_16 cmd16; 774 struct scsipi_rw_10 cmd_big; 775 struct scsi_rw_6 cmd_small; 776 struct scsipi_generic *cmdp; 777 struct scsipi_xfer *xs; 778 int nblks, cmdlen, error, flags; 779 780 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 781 /* 782 * Check if the device has room for another command 783 */ 784 while (periph->periph_active < periph->periph_openings) { 785 /* 786 * there is excess capacity, but a special waits 787 * It'll need the adapter as soon as we clear out of the 788 * way and let it run (user level wait). 789 */ 790 if (periph->periph_flags & PERIPH_WAITING) { 791 periph->periph_flags &= ~PERIPH_WAITING; 792 wakeup((void *)periph); 793 return; 794 } 795 796 /* 797 * If the device has become invalid, abort all the 798 * reads and writes until all files have been closed and 799 * re-opened 800 */ 801 if (__predict_false( 802 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 803 if ((bp = BUFQ_GET(sd->buf_queue)) != NULL) { 804 bp->b_error = EIO; 805 bp->b_resid = bp->b_bcount; 806 biodone(bp); 807 continue; 808 } else { 809 return; 810 } 811 } 812 813 /* 814 * See if there is a buf with work for us to do.. 815 */ 816 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 817 return; 818 819 /* 820 * We have a buf, now we should make a command. 821 */ 822 823 if (lp->d_secsize == DEV_BSIZE) 824 nblks = bp->b_bcount >> DEV_BSHIFT; 825 else 826 nblks = howmany(bp->b_bcount, lp->d_secsize); 827 828 /* 829 * Fill out the scsi command. Use the smallest CDB possible 830 * (6-byte, 10-byte, or 16-byte). 831 */ 832 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 833 ((nblks & 0xff) == nblks) && 834 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 835 /* 6-byte CDB */ 836 memset(&cmd_small, 0, sizeof(cmd_small)); 837 cmd_small.opcode = (bp->b_flags & B_READ) ? 838 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 839 _lto3b(bp->b_rawblkno, cmd_small.addr); 840 cmd_small.length = nblks & 0xff; 841 cmdlen = sizeof(cmd_small); 842 cmdp = (struct scsipi_generic *)&cmd_small; 843 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 844 /* 10-byte CDB */ 845 memset(&cmd_big, 0, sizeof(cmd_big)); 846 cmd_big.opcode = (bp->b_flags & B_READ) ? 847 READ_10 : WRITE_10; 848 _lto4b(bp->b_rawblkno, cmd_big.addr); 849 _lto2b(nblks, cmd_big.length); 850 cmdlen = sizeof(cmd_big); 851 cmdp = (struct scsipi_generic *)&cmd_big; 852 } else { 853 /* 16-byte CDB */ 854 memset(&cmd16, 0, sizeof(cmd16)); 855 cmd16.opcode = (bp->b_flags & B_READ) ? 856 READ_16 : WRITE_16; 857 _lto8b(bp->b_rawblkno, cmd16.addr); 858 _lto4b(nblks, cmd16.length); 859 cmdlen = sizeof(cmd16); 860 cmdp = (struct scsipi_generic *)&cmd16; 861 } 862 863 /* Instrumentation. */ 864 disk_busy(&sd->sc_dk); 865 866 /* 867 * Mark the disk dirty so that the cache will be 868 * flushed on close. 869 */ 870 if ((bp->b_flags & B_READ) == 0) 871 sd->flags |= SDF_DIRTY; 872 873 /* 874 * Figure out what flags to use. 875 */ 876 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 877 if (bp->b_flags & B_READ) 878 flags |= XS_CTL_DATA_IN; 879 else 880 flags |= XS_CTL_DATA_OUT; 881 882 /* 883 * Call the routine that chats with the adapter. 884 * Note: we cannot sleep as we may be an interrupt 885 */ 886 xs = scsipi_make_xs(periph, cmdp, cmdlen, 887 (u_char *)bp->b_data, bp->b_bcount, 888 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 889 if (__predict_false(xs == NULL)) { 890 /* 891 * out of memory. Keep this buffer in the queue, and 892 * retry later. 893 */ 894 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 895 periph); 896 return; 897 } 898 /* 899 * need to dequeue the buffer before queuing the command, 900 * because cdstart may be called recursively from the 901 * HBA driver 902 */ 903 #ifdef DIAGNOSTIC 904 if (BUFQ_GET(sd->buf_queue) != bp) 905 panic("sdstart(): dequeued wrong buf"); 906 #else 907 BUFQ_GET(sd->buf_queue); 908 #endif 909 error = scsipi_execute_xs(xs); 910 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 911 KASSERT(error == 0); 912 } 913 } 914 915 static void 916 sdrestart(void *v) 917 { 918 int s = splbio(); 919 sdstart((struct scsipi_periph *)v); 920 splx(s); 921 } 922 923 static void 924 sddone(struct scsipi_xfer *xs, int error) 925 { 926 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 927 struct buf *bp = xs->bp; 928 929 if (sd->flags & SDF_FLUSHING) { 930 /* Flush completed, no longer dirty. */ 931 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 932 } 933 934 if (bp) { 935 bp->b_error = error; 936 bp->b_resid = xs->resid; 937 if (error) { 938 /* on a read/write error bp->b_resid is zero, so fix */ 939 bp->b_resid = bp->b_bcount; 940 } 941 942 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 943 (bp->b_flags & B_READ)); 944 #if NRND > 0 945 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 946 #endif 947 948 biodone(bp); 949 } 950 } 951 952 static void 953 sdminphys(struct buf *bp) 954 { 955 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 956 long xmax; 957 958 /* 959 * If the device is ancient, we want to make sure that 960 * the transfer fits into a 6-byte cdb. 961 * 962 * XXX Note that the SCSI-I spec says that 256-block transfers 963 * are allowed in a 6-byte read/write, and are specified 964 * by settng the "length" to 0. However, we're conservative 965 * here, allowing only 255-block transfers in case an 966 * ancient device gets confused by length == 0. A length of 0 967 * in a 10-byte read/write actually means 0 blocks. 968 */ 969 if ((sd->flags & SDF_ANCIENT) && 970 ((sd->sc_periph->periph_flags & 971 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 972 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 973 974 if (bp->b_bcount > xmax) 975 bp->b_bcount = xmax; 976 } 977 978 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 979 } 980 981 static int 982 sdread(dev_t dev, struct uio *uio, int ioflag) 983 { 984 985 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 986 } 987 988 static int 989 sdwrite(dev_t dev, struct uio *uio, int ioflag) 990 { 991 992 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 993 } 994 995 /* 996 * Perform special action on behalf of the user 997 * Knows about the internals of this device 998 */ 999 static int 1000 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1001 { 1002 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1003 struct scsipi_periph *periph = sd->sc_periph; 1004 int part = SDPART(dev); 1005 int error = 0; 1006 #ifdef __HAVE_OLD_DISKLABEL 1007 struct disklabel *newlabel = NULL; 1008 #endif 1009 1010 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1011 1012 /* 1013 * If the device is not valid, some IOCTLs can still be 1014 * handled on the raw partition. Check this here. 1015 */ 1016 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1017 switch (cmd) { 1018 case DIOCKLABEL: 1019 case DIOCWLABEL: 1020 case DIOCLOCK: 1021 case DIOCEJECT: 1022 case ODIOCEJECT: 1023 case DIOCGCACHE: 1024 case DIOCSCACHE: 1025 case SCIOCIDENTIFY: 1026 case OSCIOCIDENTIFY: 1027 case SCIOCCOMMAND: 1028 case SCIOCDEBUG: 1029 if (part == RAW_PART) 1030 break; 1031 /* FALLTHROUGH */ 1032 default: 1033 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1034 return (ENODEV); 1035 else 1036 return (EIO); 1037 } 1038 } 1039 1040 switch (cmd) { 1041 case DIOCGDINFO: 1042 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1043 return (0); 1044 1045 #ifdef __HAVE_OLD_DISKLABEL 1046 case ODIOCGDINFO: 1047 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1048 if (newlabel == NULL) 1049 return EIO; 1050 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1051 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1052 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1053 else 1054 error = ENOTTY; 1055 free(newlabel, M_TEMP); 1056 return error; 1057 #endif 1058 1059 case DIOCGPART: 1060 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1061 ((struct partinfo *)addr)->part = 1062 &sd->sc_dk.dk_label->d_partitions[part]; 1063 return (0); 1064 1065 case DIOCWDINFO: 1066 case DIOCSDINFO: 1067 #ifdef __HAVE_OLD_DISKLABEL 1068 case ODIOCWDINFO: 1069 case ODIOCSDINFO: 1070 #endif 1071 { 1072 struct disklabel *lp; 1073 1074 if ((flag & FWRITE) == 0) 1075 return (EBADF); 1076 1077 #ifdef __HAVE_OLD_DISKLABEL 1078 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1079 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1080 if (newlabel == NULL) 1081 return EIO; 1082 memset(newlabel, 0, sizeof newlabel); 1083 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1084 lp = newlabel; 1085 } else 1086 #endif 1087 lp = (struct disklabel *)addr; 1088 1089 mutex_enter(&sd->sc_dk.dk_openlock); 1090 sd->flags |= SDF_LABELLING; 1091 1092 error = setdisklabel(sd->sc_dk.dk_label, 1093 lp, /*sd->sc_dk.dk_openmask : */0, 1094 sd->sc_dk.dk_cpulabel); 1095 if (error == 0) { 1096 if (cmd == DIOCWDINFO 1097 #ifdef __HAVE_OLD_DISKLABEL 1098 || cmd == ODIOCWDINFO 1099 #endif 1100 ) 1101 error = writedisklabel(SDLABELDEV(dev), 1102 sdstrategy, sd->sc_dk.dk_label, 1103 sd->sc_dk.dk_cpulabel); 1104 } 1105 1106 sd->flags &= ~SDF_LABELLING; 1107 mutex_exit(&sd->sc_dk.dk_openlock); 1108 #ifdef __HAVE_OLD_DISKLABEL 1109 if (newlabel != NULL) 1110 free(newlabel, M_TEMP); 1111 #endif 1112 return (error); 1113 } 1114 1115 case DIOCKLABEL: 1116 if (*(int *)addr) 1117 periph->periph_flags |= PERIPH_KEEP_LABEL; 1118 else 1119 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1120 return (0); 1121 1122 case DIOCWLABEL: 1123 if ((flag & FWRITE) == 0) 1124 return (EBADF); 1125 if (*(int *)addr) 1126 sd->flags |= SDF_WLABEL; 1127 else 1128 sd->flags &= ~SDF_WLABEL; 1129 return (0); 1130 1131 case DIOCLOCK: 1132 if (periph->periph_flags & PERIPH_REMOVABLE) 1133 return (scsipi_prevent(periph, 1134 (*(int *)addr) ? 1135 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1136 else 1137 return (ENOTTY); 1138 1139 case DIOCEJECT: 1140 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1141 return (ENOTTY); 1142 if (*(int *)addr == 0) { 1143 /* 1144 * Don't force eject: check that we are the only 1145 * partition open. If so, unlock it. 1146 */ 1147 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1148 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1149 sd->sc_dk.dk_openmask) { 1150 error = scsipi_prevent(periph, SPAMR_ALLOW, 1151 XS_CTL_IGNORE_NOT_READY); 1152 if (error) 1153 return (error); 1154 } else { 1155 return (EBUSY); 1156 } 1157 } 1158 /* FALLTHROUGH */ 1159 case ODIOCEJECT: 1160 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1161 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1162 1163 case DIOCGDEFLABEL: 1164 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1165 return (0); 1166 1167 #ifdef __HAVE_OLD_DISKLABEL 1168 case ODIOCGDEFLABEL: 1169 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1170 if (newlabel == NULL) 1171 return EIO; 1172 sdgetdefaultlabel(sd, newlabel); 1173 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1174 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1175 else 1176 error = ENOTTY; 1177 free(newlabel, M_TEMP); 1178 return error; 1179 #endif 1180 1181 case DIOCGCACHE: 1182 return (sd_getcache(sd, (int *) addr)); 1183 1184 case DIOCSCACHE: 1185 if ((flag & FWRITE) == 0) 1186 return (EBADF); 1187 return (sd_setcache(sd, *(int *) addr)); 1188 1189 case DIOCCACHESYNC: 1190 /* 1191 * XXX Do we really need to care about having a writable 1192 * file descriptor here? 1193 */ 1194 if ((flag & FWRITE) == 0) 1195 return (EBADF); 1196 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1197 error = sd_flush(sd, 0); 1198 if (error) 1199 sd->flags &= ~SDF_FLUSHING; 1200 else 1201 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1202 } else 1203 error = 0; 1204 return (error); 1205 1206 case DIOCAWEDGE: 1207 { 1208 struct dkwedge_info *dkw = (void *) addr; 1209 1210 if ((flag & FWRITE) == 0) 1211 return (EBADF); 1212 1213 /* If the ioctl happens here, the parent is us. */ 1214 strlcpy(dkw->dkw_parent, device_xname(&sd->sc_dev), sizeof(dkw->dkw_parent)); 1215 return (dkwedge_add(dkw)); 1216 } 1217 1218 case DIOCDWEDGE: 1219 { 1220 struct dkwedge_info *dkw = (void *) addr; 1221 1222 if ((flag & FWRITE) == 0) 1223 return (EBADF); 1224 1225 /* If the ioctl happens here, the parent is us. */ 1226 strlcpy(dkw->dkw_parent, device_xname(&sd->sc_dev), sizeof(dkw->dkw_parent)); 1227 return (dkwedge_del(dkw)); 1228 } 1229 1230 case DIOCLWEDGES: 1231 { 1232 struct dkwedge_list *dkwl = (void *) addr; 1233 1234 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1235 } 1236 1237 default: 1238 if (part != RAW_PART) 1239 return (ENOTTY); 1240 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1241 } 1242 1243 #ifdef DIAGNOSTIC 1244 panic("sdioctl: impossible"); 1245 #endif 1246 } 1247 1248 static void 1249 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1250 { 1251 1252 memset(lp, 0, sizeof(struct disklabel)); 1253 1254 lp->d_secsize = sd->params.blksize; 1255 lp->d_ntracks = sd->params.heads; 1256 lp->d_nsectors = sd->params.sectors; 1257 lp->d_ncylinders = sd->params.cyls; 1258 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1259 1260 switch (scsipi_periph_bustype(sd->sc_periph)) { 1261 case SCSIPI_BUSTYPE_SCSI: 1262 lp->d_type = DTYPE_SCSI; 1263 break; 1264 case SCSIPI_BUSTYPE_ATAPI: 1265 lp->d_type = DTYPE_ATAPI; 1266 break; 1267 } 1268 /* 1269 * XXX 1270 * We could probe the mode pages to figure out what kind of disc it is. 1271 * Is this worthwhile? 1272 */ 1273 strncpy(lp->d_typename, sd->name, 16); 1274 strncpy(lp->d_packname, "fictitious", 16); 1275 lp->d_secperunit = sd->params.disksize; 1276 lp->d_rpm = sd->params.rot_rate; 1277 lp->d_interleave = 1; 1278 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1279 D_REMOVABLE : 0; 1280 1281 lp->d_partitions[RAW_PART].p_offset = 0; 1282 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1283 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1284 lp->d_npartitions = RAW_PART + 1; 1285 1286 lp->d_magic = DISKMAGIC; 1287 lp->d_magic2 = DISKMAGIC; 1288 lp->d_checksum = dkcksum(lp); 1289 } 1290 1291 1292 /* 1293 * Load the label information on the named device 1294 */ 1295 static int 1296 sdgetdisklabel(struct sd_softc *sd) 1297 { 1298 struct disklabel *lp = sd->sc_dk.dk_label; 1299 const char *errstring; 1300 1301 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1302 1303 sdgetdefaultlabel(sd, lp); 1304 1305 if (lp->d_secpercyl == 0) { 1306 lp->d_secpercyl = 100; 1307 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1308 } 1309 1310 /* 1311 * Call the generic disklabel extraction routine 1312 */ 1313 errstring = readdisklabel(MAKESDDEV(0, device_unit(&sd->sc_dev), 1314 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1315 if (errstring) { 1316 aprint_error_dev(&sd->sc_dev, "%s\n", errstring); 1317 return EIO; 1318 } 1319 return 0; 1320 } 1321 1322 static void 1323 sd_shutdown(void *arg) 1324 { 1325 struct sd_softc *sd = arg; 1326 1327 /* 1328 * If the disk cache needs to be flushed, and the disk supports 1329 * it, flush it. We're cold at this point, so we poll for 1330 * completion. 1331 */ 1332 if ((sd->flags & SDF_DIRTY) != 0) { 1333 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1334 aprint_error_dev(&sd->sc_dev, "cache synchronization failed\n"); 1335 sd->flags &= ~SDF_FLUSHING; 1336 } else 1337 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1338 } 1339 } 1340 1341 static bool 1342 sd_suspend(device_t dv PMF_FN_ARGS) 1343 { 1344 struct sd_softc *sd = device_private(dv); 1345 1346 sd_shutdown(sd); /* XXX no need to poll */ 1347 return true; 1348 } 1349 1350 /* 1351 * Check Errors 1352 */ 1353 static int 1354 sd_interpret_sense(struct scsipi_xfer *xs) 1355 { 1356 struct scsipi_periph *periph = xs->xs_periph; 1357 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1358 struct sd_softc *sd = (void *)periph->periph_dev; 1359 int s, error, retval = EJUSTRETURN; 1360 1361 /* 1362 * If the periph is already recovering, just do the normal 1363 * error processing. 1364 */ 1365 if (periph->periph_flags & PERIPH_RECOVERING) 1366 return (retval); 1367 1368 /* 1369 * Ignore errors from accessing illegal fields (e.g. trying to 1370 * lock the door of a digicam, which doesn't have a door that 1371 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1372 */ 1373 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1374 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1375 sense->asc == 0x24 && 1376 sense->ascq == 0x00) { /* Illegal field in CDB */ 1377 if (!(xs->xs_control & XS_CTL_SILENT)) { 1378 scsipi_printaddr(periph); 1379 printf("no door lock\n"); 1380 } 1381 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1382 return (retval); 1383 } 1384 1385 1386 1387 /* 1388 * If the device is not open yet, let the generic code handle it. 1389 */ 1390 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1391 return (retval); 1392 1393 /* 1394 * If it isn't a extended or extended/deferred error, let 1395 * the generic code handle it. 1396 */ 1397 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1398 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1399 return (retval); 1400 1401 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1402 sense->asc == 0x4) { 1403 if (sense->ascq == 0x01) { 1404 /* 1405 * Unit In The Process Of Becoming Ready. 1406 */ 1407 printf("%s: waiting for pack to spin up...\n", 1408 device_xname(&sd->sc_dev)); 1409 if (!callout_pending(&periph->periph_callout)) 1410 scsipi_periph_freeze(periph, 1); 1411 callout_reset(&periph->periph_callout, 1412 5 * hz, scsipi_periph_timed_thaw, periph); 1413 retval = ERESTART; 1414 } else if (sense->ascq == 0x02) { 1415 printf("%s: pack is stopped, restarting...\n", 1416 device_xname(&sd->sc_dev)); 1417 s = splbio(); 1418 periph->periph_flags |= PERIPH_RECOVERING; 1419 splx(s); 1420 error = scsipi_start(periph, SSS_START, 1421 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1422 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1423 if (error) { 1424 aprint_error_dev(&sd->sc_dev, "unable to restart pack\n"); 1425 retval = error; 1426 } else 1427 retval = ERESTART; 1428 s = splbio(); 1429 periph->periph_flags &= ~PERIPH_RECOVERING; 1430 splx(s); 1431 } 1432 } 1433 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1434 sense->asc == 0x31 && 1435 sense->ascq == 0x00) { /* maybe for any asq ? */ 1436 /* Medium Format Corrupted */ 1437 retval = EFTYPE; 1438 } 1439 return (retval); 1440 } 1441 1442 1443 static int 1444 sdsize(dev_t dev) 1445 { 1446 struct sd_softc *sd; 1447 int part, unit, omask; 1448 int size; 1449 1450 unit = SDUNIT(dev); 1451 if (unit >= sd_cd.cd_ndevs) 1452 return (-1); 1453 sd = sd_cd.cd_devs[unit]; 1454 if (sd == NULL) 1455 return (-1); 1456 1457 if (!device_is_active(&sd->sc_dev)) 1458 return (-1); 1459 1460 part = SDPART(dev); 1461 omask = sd->sc_dk.dk_openmask & (1 << part); 1462 1463 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1464 return (-1); 1465 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1466 size = -1; 1467 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1468 size = -1; 1469 else 1470 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1471 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1472 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1473 return (-1); 1474 return (size); 1475 } 1476 1477 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1478 static struct scsipi_xfer sx; 1479 static int sddoingadump; 1480 1481 /* 1482 * dump all of physical memory into the partition specified, starting 1483 * at offset 'dumplo' into the partition. 1484 */ 1485 static int 1486 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1487 { 1488 struct sd_softc *sd; /* disk unit to do the I/O */ 1489 struct disklabel *lp; /* disk's disklabel */ 1490 int unit, part; 1491 int sectorsize; /* size of a disk sector */ 1492 int nsects; /* number of sectors in partition */ 1493 int sectoff; /* sector offset of partition */ 1494 int totwrt; /* total number of sectors left to write */ 1495 int nwrt; /* current number of sectors to write */ 1496 struct scsipi_rw_10 cmd; /* write command */ 1497 struct scsipi_xfer *xs; /* ... convenience */ 1498 struct scsipi_periph *periph; 1499 struct scsipi_channel *chan; 1500 1501 /* Check if recursive dump; if so, punt. */ 1502 if (sddoingadump) 1503 return (EFAULT); 1504 1505 /* Mark as active early. */ 1506 sddoingadump = 1; 1507 1508 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1509 part = SDPART(dev); 1510 1511 /* Check for acceptable drive number. */ 1512 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1513 return (ENXIO); 1514 1515 if (!device_is_active(&sd->sc_dev)) 1516 return (ENODEV); 1517 1518 periph = sd->sc_periph; 1519 chan = periph->periph_channel; 1520 1521 /* Make sure it was initialized. */ 1522 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1523 return (ENXIO); 1524 1525 /* Convert to disk sectors. Request must be a multiple of size. */ 1526 lp = sd->sc_dk.dk_label; 1527 sectorsize = lp->d_secsize; 1528 if ((size % sectorsize) != 0) 1529 return (EFAULT); 1530 totwrt = size / sectorsize; 1531 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1532 1533 nsects = lp->d_partitions[part].p_size; 1534 sectoff = lp->d_partitions[part].p_offset; 1535 1536 /* Check transfer bounds against partition size. */ 1537 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1538 return (EINVAL); 1539 1540 /* Offset block number to start of partition. */ 1541 blkno += sectoff; 1542 1543 xs = &sx; 1544 1545 while (totwrt > 0) { 1546 nwrt = totwrt; /* XXX */ 1547 #ifndef SD_DUMP_NOT_TRUSTED 1548 /* 1549 * Fill out the scsi command 1550 */ 1551 memset(&cmd, 0, sizeof(cmd)); 1552 cmd.opcode = WRITE_10; 1553 _lto4b(blkno, cmd.addr); 1554 _lto2b(nwrt, cmd.length); 1555 /* 1556 * Fill out the scsipi_xfer structure 1557 * Note: we cannot sleep as we may be an interrupt 1558 * don't use scsipi_command() as it may want to wait 1559 * for an xs. 1560 */ 1561 memset(xs, 0, sizeof(sx)); 1562 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1563 XS_CTL_DATA_OUT; 1564 xs->xs_status = 0; 1565 xs->xs_periph = periph; 1566 xs->xs_retries = SDRETRIES; 1567 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1568 xs->cmd = (struct scsipi_generic *)&cmd; 1569 xs->cmdlen = sizeof(cmd); 1570 xs->resid = nwrt * sectorsize; 1571 xs->error = XS_NOERROR; 1572 xs->bp = 0; 1573 xs->data = va; 1574 xs->datalen = nwrt * sectorsize; 1575 callout_init(&xs->xs_callout, 0); 1576 1577 /* 1578 * Pass all this info to the scsi driver. 1579 */ 1580 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1581 if ((xs->xs_status & XS_STS_DONE) == 0 || 1582 xs->error != XS_NOERROR) 1583 return (EIO); 1584 #else /* SD_DUMP_NOT_TRUSTED */ 1585 /* Let's just talk about this first... */ 1586 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1587 delay(500 * 1000); /* half a second */ 1588 #endif /* SD_DUMP_NOT_TRUSTED */ 1589 1590 /* update block count */ 1591 totwrt -= nwrt; 1592 blkno += nwrt; 1593 va = (char *)va + sectorsize * nwrt; 1594 } 1595 sddoingadump = 0; 1596 return (0); 1597 } 1598 1599 static int 1600 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1601 int page, int flags, int *big) 1602 { 1603 1604 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1605 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1606 *big = 1; 1607 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1608 size + sizeof(struct scsi_mode_parameter_header_10), 1609 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1610 } else { 1611 *big = 0; 1612 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1613 size + sizeof(struct scsi_mode_parameter_header_6), 1614 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1615 } 1616 } 1617 1618 static int 1619 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1620 int flags, int big) 1621 { 1622 1623 if (big) { 1624 struct scsi_mode_parameter_header_10 *header = sense; 1625 1626 _lto2b(0, header->data_length); 1627 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1628 size + sizeof(struct scsi_mode_parameter_header_10), 1629 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1630 } else { 1631 struct scsi_mode_parameter_header_6 *header = sense; 1632 1633 header->data_length = 0; 1634 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1635 size + sizeof(struct scsi_mode_parameter_header_6), 1636 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1637 } 1638 } 1639 1640 /* 1641 * sd_validate_blksize: 1642 * 1643 * Validate the block size. Print error if periph is specified, 1644 */ 1645 static int 1646 sd_validate_blksize(struct scsipi_periph *periph, int len) 1647 { 1648 1649 switch (len) { 1650 case 256: 1651 case 512: 1652 case 1024: 1653 case 2048: 1654 case 4096: 1655 return 1; 1656 } 1657 1658 if (periph) { 1659 scsipi_printaddr(periph); 1660 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1661 (len ^ (1 << (ffs(len) - 1))) ? 1662 "preposterous" : "unsupported", 1663 len, SD_DEFAULT_BLKSIZE); 1664 } 1665 1666 return 0; 1667 } 1668 1669 /* 1670 * sd_read_capacity: 1671 * 1672 * Find out from the device what its capacity is. 1673 */ 1674 static u_int64_t 1675 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1676 { 1677 union { 1678 struct scsipi_read_capacity_10 cmd; 1679 struct scsipi_read_capacity_16 cmd16; 1680 } cmd; 1681 union { 1682 struct scsipi_read_capacity_10_data data; 1683 struct scsipi_read_capacity_16_data data16; 1684 } *datap; 1685 uint64_t rv; 1686 1687 memset(&cmd, 0, sizeof(cmd)); 1688 cmd.cmd.opcode = READ_CAPACITY_10; 1689 1690 /* 1691 * Don't allocate data buffer on stack; 1692 * The lower driver layer might use the same stack and 1693 * if it uses region which is in the same cacheline, 1694 * cache flush ops against the data buffer won't work properly. 1695 */ 1696 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1697 if (datap == NULL) 1698 return 0; 1699 1700 /* 1701 * If the command works, interpret the result as a 4 byte 1702 * number of blocks 1703 */ 1704 rv = 0; 1705 memset(datap, 0, sizeof(datap->data)); 1706 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1707 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1708 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1709 goto out; 1710 1711 if (_4btol(datap->data.addr) != 0xffffffff) { 1712 *blksize = _4btol(datap->data.length); 1713 rv = _4btol(datap->data.addr) + 1; 1714 goto out; 1715 } 1716 1717 /* 1718 * Device is larger than can be reflected by READ CAPACITY (10). 1719 * Try READ CAPACITY (16). 1720 */ 1721 1722 memset(&cmd, 0, sizeof(cmd)); 1723 cmd.cmd16.opcode = READ_CAPACITY_16; 1724 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1725 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1726 1727 memset(datap, 0, sizeof(datap->data16)); 1728 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1729 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1730 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1731 goto out; 1732 1733 *blksize = _4btol(datap->data16.length); 1734 rv = _8btol(datap->data16.addr) + 1; 1735 1736 out: 1737 free(datap, M_TEMP); 1738 return rv; 1739 } 1740 1741 static int 1742 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1743 { 1744 struct { 1745 struct scsi_mode_parameter_header_6 header; 1746 /* no block descriptor */ 1747 u_int8_t pg_code; /* page code (should be 6) */ 1748 u_int8_t pg_length; /* page length (should be 11) */ 1749 u_int8_t wcd; /* bit0: cache disable */ 1750 u_int8_t lbs[2]; /* logical block size */ 1751 u_int8_t size[5]; /* number of log. blocks */ 1752 u_int8_t pp; /* power/performance */ 1753 u_int8_t flags; 1754 u_int8_t resvd; 1755 } scsipi_sense; 1756 u_int64_t blocks; 1757 int error, blksize; 1758 1759 /* 1760 * sd_read_capacity (ie "read capacity") and mode sense page 6 1761 * give the same information. Do both for now, and check 1762 * for consistency. 1763 * XXX probably differs for removable media 1764 */ 1765 dp->blksize = SD_DEFAULT_BLKSIZE; 1766 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1767 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1768 1769 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1770 &scsipi_sense.header, sizeof(scsipi_sense), 1771 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1772 1773 if (error != 0) 1774 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1775 1776 dp->blksize = blksize; 1777 if (!sd_validate_blksize(NULL, dp->blksize)) 1778 dp->blksize = _2btol(scsipi_sense.lbs); 1779 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1780 dp->blksize = SD_DEFAULT_BLKSIZE; 1781 1782 /* 1783 * Create a pseudo-geometry. 1784 */ 1785 dp->heads = 64; 1786 dp->sectors = 32; 1787 dp->cyls = blocks / (dp->heads * dp->sectors); 1788 dp->disksize = _5btol(scsipi_sense.size); 1789 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1790 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1791 (unsigned long long)dp->disksize, 1792 (unsigned long long)blocks); 1793 dp->disksize = blocks; 1794 } 1795 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1796 1797 return (SDGP_RESULT_OK); 1798 } 1799 1800 /* 1801 * Get the scsi driver to send a full inquiry to the * device and use the 1802 * results to fill out the disk parameter structure. 1803 */ 1804 static int 1805 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1806 { 1807 u_int64_t blocks; 1808 int error, blksize; 1809 #if 0 1810 int i; 1811 u_int8_t *p; 1812 #endif 1813 1814 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1815 flags); 1816 if (blocks == 0) { 1817 struct scsipi_read_format_capacities cmd; 1818 struct { 1819 struct scsipi_capacity_list_header header; 1820 struct scsipi_capacity_descriptor desc; 1821 } __packed data; 1822 1823 memset(&cmd, 0, sizeof(cmd)); 1824 memset(&data, 0, sizeof(data)); 1825 cmd.opcode = READ_FORMAT_CAPACITIES; 1826 _lto2b(sizeof(data), cmd.length); 1827 1828 error = scsipi_command(sd->sc_periph, 1829 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1830 SDRETRIES, 20000, NULL, 1831 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1832 if (error == EFTYPE) { 1833 /* Medium Format Corrupted, handle as not formatted */ 1834 return (SDGP_RESULT_UNFORMATTED); 1835 } 1836 if (error || data.header.length == 0) 1837 return (SDGP_RESULT_OFFLINE); 1838 1839 #if 0 1840 printf("rfc: length=%d\n", data.header.length); 1841 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"); 1842 #endif 1843 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1844 case SCSIPI_CAP_DESC_CODE_RESERVED: 1845 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1846 break; 1847 1848 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1849 return (SDGP_RESULT_UNFORMATTED); 1850 1851 case SCSIPI_CAP_DESC_CODE_NONE: 1852 return (SDGP_RESULT_OFFLINE); 1853 } 1854 1855 dp->disksize = blocks = _4btol(data.desc.nblks); 1856 if (blocks == 0) 1857 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1858 1859 blksize = _3btol(data.desc.blklen); 1860 1861 } else if (!sd_validate_blksize(NULL, blksize)) { 1862 struct sd_mode_sense_data scsipi_sense; 1863 int big, bsize; 1864 struct scsi_general_block_descriptor *bdesc; 1865 1866 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1867 error = sd_mode_sense(sd, 0, &scsipi_sense, 1868 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1869 if (!error) { 1870 if (big) { 1871 bdesc = (void *)(&scsipi_sense.header.big + 1); 1872 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1873 } else { 1874 bdesc = (void *)(&scsipi_sense.header.small + 1); 1875 bsize = scsipi_sense.header.small.blk_desc_len; 1876 } 1877 1878 #if 0 1879 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1880 printf("page 0 bsize=%d\n", bsize); 1881 printf("page 0 ok\n"); 1882 #endif 1883 1884 if (bsize >= 8) { 1885 blksize = _3btol(bdesc->blklen); 1886 } 1887 } 1888 } 1889 1890 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1891 blksize = SD_DEFAULT_BLKSIZE; 1892 1893 dp->blksize = blksize; 1894 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1895 return (0); 1896 } 1897 1898 static int 1899 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1900 { 1901 struct sd_mode_sense_data scsipi_sense; 1902 int error; 1903 int big, byte2; 1904 size_t poffset; 1905 union scsi_disk_pages *pages; 1906 1907 byte2 = SMS_DBD; 1908 again: 1909 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1910 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1911 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1912 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1913 flags | XS_CTL_SILENT, &big); 1914 if (error) { 1915 if (byte2 == SMS_DBD) { 1916 /* No result; try once more with DBD off */ 1917 byte2 = 0; 1918 goto again; 1919 } 1920 return (error); 1921 } 1922 1923 if (big) { 1924 poffset = sizeof scsipi_sense.header.big; 1925 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1926 } else { 1927 poffset = sizeof scsipi_sense.header.small; 1928 poffset += scsipi_sense.header.small.blk_desc_len; 1929 } 1930 1931 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1932 return ERESTART; 1933 1934 pages = (void *)((u_long)&scsipi_sense + poffset); 1935 #if 0 1936 { 1937 size_t i; 1938 u_int8_t *p; 1939 1940 printf("page 4 sense:"); 1941 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1942 i--, p++) 1943 printf(" %02x", *p); 1944 printf("\n"); 1945 printf("page 4 pg_code=%d sense=%p/%p\n", 1946 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1947 } 1948 #endif 1949 1950 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1951 return (ERESTART); 1952 1953 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1954 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1955 _3btol(pages->rigid_geometry.ncyl), 1956 pages->rigid_geometry.nheads, 1957 _2btol(pages->rigid_geometry.st_cyl_wp), 1958 _2btol(pages->rigid_geometry.st_cyl_rwc), 1959 _2btol(pages->rigid_geometry.land_zone))); 1960 1961 /* 1962 * KLUDGE!! (for zone recorded disks) 1963 * give a number of sectors so that sec * trks * cyls 1964 * is <= disk_size 1965 * can lead to wasted space! THINK ABOUT THIS ! 1966 */ 1967 dp->heads = pages->rigid_geometry.nheads; 1968 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1969 if (dp->heads == 0 || dp->cyls == 0) 1970 return (ERESTART); 1971 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1972 1973 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1974 if (dp->rot_rate == 0) 1975 dp->rot_rate = 3600; 1976 1977 #if 0 1978 printf("page 4 ok\n"); 1979 #endif 1980 return (0); 1981 } 1982 1983 static int 1984 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1985 { 1986 struct sd_mode_sense_data scsipi_sense; 1987 int error; 1988 int big, byte2; 1989 size_t poffset; 1990 union scsi_disk_pages *pages; 1991 1992 byte2 = SMS_DBD; 1993 again: 1994 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1995 error = sd_mode_sense(sd, 0, &scsipi_sense, 1996 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1997 sizeof(scsipi_sense.pages.flex_geometry), 5, 1998 flags | XS_CTL_SILENT, &big); 1999 if (error) { 2000 if (byte2 == SMS_DBD) { 2001 /* No result; try once more with DBD off */ 2002 byte2 = 0; 2003 goto again; 2004 } 2005 return (error); 2006 } 2007 2008 if (big) { 2009 poffset = sizeof scsipi_sense.header.big; 2010 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2011 } else { 2012 poffset = sizeof scsipi_sense.header.small; 2013 poffset += scsipi_sense.header.small.blk_desc_len; 2014 } 2015 2016 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2017 return ERESTART; 2018 2019 pages = (void *)((u_long)&scsipi_sense + poffset); 2020 #if 0 2021 { 2022 size_t i; 2023 u_int8_t *p; 2024 2025 printf("page 5 sense:"); 2026 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2027 i--, p++) 2028 printf(" %02x", *p); 2029 printf("\n"); 2030 printf("page 5 pg_code=%d sense=%p/%p\n", 2031 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2032 } 2033 #endif 2034 2035 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2036 return (ERESTART); 2037 2038 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2039 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2040 _3btol(pages->flex_geometry.ncyl), 2041 pages->flex_geometry.nheads, 2042 pages->flex_geometry.ph_sec_tr, 2043 _2btol(pages->flex_geometry.bytes_s))); 2044 2045 dp->heads = pages->flex_geometry.nheads; 2046 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2047 dp->sectors = pages->flex_geometry.ph_sec_tr; 2048 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2049 return (ERESTART); 2050 2051 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2052 if (dp->rot_rate == 0) 2053 dp->rot_rate = 3600; 2054 2055 #if 0 2056 printf("page 5 ok\n"); 2057 #endif 2058 return (0); 2059 } 2060 2061 static int 2062 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2063 { 2064 int error; 2065 2066 /* 2067 * If offline, the SDEV_MEDIA_LOADED flag will be 2068 * cleared by the caller if necessary. 2069 */ 2070 if (sd->type == T_SIMPLE_DIRECT) { 2071 error = sd_get_simplifiedparms(sd, dp, flags); 2072 if (!error) 2073 disk_blocksize(&sd->sc_dk, dp->blksize); 2074 return (error); 2075 } 2076 2077 error = sd_get_capacity(sd, dp, flags); 2078 if (error) 2079 return (error); 2080 2081 disk_blocksize(&sd->sc_dk, dp->blksize); 2082 2083 if (sd->type == T_OPTICAL) 2084 goto page0; 2085 2086 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2087 if (!sd_get_parms_page5(sd, dp, flags) || 2088 !sd_get_parms_page4(sd, dp, flags)) 2089 return (SDGP_RESULT_OK); 2090 } else { 2091 if (!sd_get_parms_page4(sd, dp, flags) || 2092 !sd_get_parms_page5(sd, dp, flags)) 2093 return (SDGP_RESULT_OK); 2094 } 2095 2096 page0: 2097 printf("%s: fabricating a geometry\n", device_xname(&sd->sc_dev)); 2098 /* Try calling driver's method for figuring out geometry. */ 2099 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2100 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2101 (sd->sc_periph, dp, dp->disksize)) { 2102 /* 2103 * Use adaptec standard fictitious geometry 2104 * this depends on which controller (e.g. 1542C is 2105 * different. but we have to put SOMETHING here..) 2106 */ 2107 dp->heads = 64; 2108 dp->sectors = 32; 2109 dp->cyls = dp->disksize / (64 * 32); 2110 } 2111 dp->rot_rate = 3600; 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