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sys/dev/scsipi/sd.c
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1 /* $NetBSD: sd.c,v 1.258.2.1 2007/07/31 21:47:15 liamjfoy 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Originally written by Julian Elischer (julian@dialix.oz.au) 41 * for TRW Financial Systems for use under the MACH(2.5) operating system. 42 * 43 * TRW Financial Systems, in accordance with their agreement with Carnegie 44 * Mellon University, makes this software available to CMU to distribute 45 * or use in any manner that they see fit as long as this message is kept with 46 * the software. For this reason TFS also grants any other persons or 47 * organisations permission to use or modify this software. 48 * 49 * TFS supplies this software to be publicly redistributed 50 * on the understanding that TFS is not responsible for the correct 51 * functioning of this software in any circumstances. 52 * 53 * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.258.2.1 2007/07/31 21:47:15 liamjfoy Exp $"); 58 59 #include "opt_scsi.h" 60 #include "rnd.h" 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/kernel.h> 65 #include <sys/file.h> 66 #include <sys/stat.h> 67 #include <sys/ioctl.h> 68 #include <sys/scsiio.h> 69 #include <sys/buf.h> 70 #include <sys/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/errno.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/proc.h> 78 #include <sys/conf.h> 79 #include <sys/vnode.h> 80 #if NRND > 0 81 #include <sys/rnd.h> 82 #endif 83 84 #include <dev/scsipi/scsi_spc.h> 85 #include <dev/scsipi/scsipi_all.h> 86 #include <dev/scsipi/scsi_all.h> 87 #include <dev/scsipi/scsipi_disk.h> 88 #include <dev/scsipi/scsi_disk.h> 89 #include <dev/scsipi/scsiconf.h> 90 #include <dev/scsipi/scsipi_base.h> 91 #include <dev/scsipi/sdvar.h> 92 93 #include <prop/proplib.h> 94 95 #define SDUNIT(dev) DISKUNIT(dev) 96 #define SDPART(dev) DISKPART(dev) 97 #define SDMINOR(unit, part) DISKMINOR(unit, part) 98 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 99 100 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 101 102 #define SD_DEFAULT_BLKSIZE 512 103 104 static void sdminphys(struct buf *); 105 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 106 static int sdgetdisklabel(struct sd_softc *); 107 static void sdstart(struct scsipi_periph *); 108 static void sdrestart(void *); 109 static void sddone(struct scsipi_xfer *, int); 110 static void sd_shutdown(void *); 111 static int sd_interpret_sense(struct scsipi_xfer *); 112 113 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 114 int, int *); 115 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 116 int); 117 static int sd_validate_blksize(struct scsipi_periph *, int); 118 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 119 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 120 int); 121 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 122 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 123 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 124 int); 125 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 126 int); 127 128 static int sd_flush(struct sd_softc *, int); 129 static int sd_getcache(struct sd_softc *, int *); 130 static int sd_setcache(struct sd_softc *, int); 131 132 static int sdmatch(struct device *, struct cfdata *, void *); 133 static void sdattach(struct device *, struct device *, void *); 134 static int sdactivate(struct device *, enum devact); 135 static int sddetach(struct device *, int); 136 static void sd_set_properties(struct sd_softc *); 137 138 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 139 sdactivate); 140 141 extern struct cfdriver sd_cd; 142 143 static const struct scsipi_inquiry_pattern sd_patterns[] = { 144 {T_DIRECT, T_FIXED, 145 "", "", ""}, 146 {T_DIRECT, T_REMOV, 147 "", "", ""}, 148 {T_OPTICAL, T_FIXED, 149 "", "", ""}, 150 {T_OPTICAL, T_REMOV, 151 "", "", ""}, 152 {T_SIMPLE_DIRECT, T_FIXED, 153 "", "", ""}, 154 {T_SIMPLE_DIRECT, T_REMOV, 155 "", "", ""}, 156 }; 157 158 static dev_type_open(sdopen); 159 static dev_type_close(sdclose); 160 static dev_type_read(sdread); 161 static dev_type_write(sdwrite); 162 static dev_type_ioctl(sdioctl); 163 static dev_type_strategy(sdstrategy); 164 static dev_type_dump(sddump); 165 static dev_type_size(sdsize); 166 167 const struct bdevsw sd_bdevsw = { 168 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 169 }; 170 171 const struct cdevsw sd_cdevsw = { 172 sdopen, sdclose, sdread, sdwrite, sdioctl, 173 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 174 }; 175 176 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 177 178 static const struct scsipi_periphsw sd_switch = { 179 sd_interpret_sense, /* check our error handler first */ 180 sdstart, /* have a queue, served by this */ 181 NULL, /* have no async handler */ 182 sddone, /* deal with stats at interrupt time */ 183 }; 184 185 struct sd_mode_sense_data { 186 /* 187 * XXX 188 * We are not going to parse this as-is -- it just has to be large 189 * enough. 190 */ 191 union { 192 struct scsi_mode_parameter_header_6 small; 193 struct scsi_mode_parameter_header_10 big; 194 } header; 195 struct scsi_general_block_descriptor blk_desc; 196 union scsi_disk_pages pages; 197 }; 198 199 /* 200 * The routine called by the low level scsi routine when it discovers 201 * A device suitable for this driver 202 */ 203 static int 204 sdmatch(struct device *parent, struct cfdata *match, 205 void *aux) 206 { 207 struct scsipibus_attach_args *sa = aux; 208 int priority; 209 210 (void)scsipi_inqmatch(&sa->sa_inqbuf, 211 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 212 sizeof(sd_patterns[0]), &priority); 213 214 return (priority); 215 } 216 217 /* 218 * Attach routine common to atapi & scsi. 219 */ 220 static void 221 sdattach(struct device *parent, struct device *self, void *aux) 222 { 223 struct sd_softc *sd = device_private(self); 224 struct scsipibus_attach_args *sa = aux; 225 struct scsipi_periph *periph = sa->sa_periph; 226 int error, result; 227 struct disk_parms *dp = &sd->params; 228 char pbuf[9]; 229 230 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 231 232 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 233 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 234 if (sd->type == T_SIMPLE_DIRECT) 235 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 236 237 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 238 periph->periph_version == 0) 239 sd->flags |= SDF_ANCIENT; 240 241 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 242 243 callout_init(&sd->sc_callout); 244 245 /* 246 * Store information needed to contact our base driver 247 */ 248 sd->sc_periph = periph; 249 250 periph->periph_dev = &sd->sc_dev; 251 periph->periph_switch = &sd_switch; 252 253 /* 254 * Increase our openings to the maximum-per-periph 255 * supported by the adapter. This will either be 256 * clamped down or grown by the adapter if necessary. 257 */ 258 periph->periph_openings = 259 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 260 periph->periph_flags |= PERIPH_GROW_OPENINGS; 261 262 /* 263 * Initialize and attach the disk structure. 264 */ 265 sd->sc_dk.dk_driver = &sddkdriver; 266 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 267 disk_attach(&sd->sc_dk); 268 269 /* 270 * Use the subdriver to request information regarding the drive. 271 */ 272 aprint_naive("\n"); 273 aprint_normal("\n"); 274 275 error = scsipi_test_unit_ready(periph, 276 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 277 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 278 279 if (error) 280 result = SDGP_RESULT_OFFLINE; 281 else 282 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 283 aprint_normal("%s: ", sd->sc_dev.dv_xname); 284 switch (result) { 285 case SDGP_RESULT_OK: 286 format_bytes(pbuf, sizeof(pbuf), 287 (u_int64_t)dp->disksize * dp->blksize); 288 aprint_normal( 289 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 290 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 291 (unsigned long long)dp->disksize); 292 break; 293 294 case SDGP_RESULT_OFFLINE: 295 aprint_normal("drive offline"); 296 break; 297 298 case SDGP_RESULT_UNFORMATTED: 299 aprint_normal("unformatted media"); 300 break; 301 302 #ifdef DIAGNOSTIC 303 default: 304 panic("sdattach: unknown result from get_parms"); 305 break; 306 #endif 307 } 308 aprint_normal("\n"); 309 310 /* 311 * Establish a shutdown hook so that we can ensure that 312 * our data has actually made it onto the platter at 313 * shutdown time. Note that this relies on the fact 314 * that the shutdown hook code puts us at the head of 315 * the list (thus guaranteeing that our hook runs before 316 * our ancestors'). 317 */ 318 if ((sd->sc_sdhook = 319 shutdownhook_establish(sd_shutdown, sd)) == NULL) 320 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 321 sd->sc_dev.dv_xname); 322 323 #if NRND > 0 324 /* 325 * attach the device into the random source list 326 */ 327 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 328 RND_TYPE_DISK, 0); 329 #endif 330 331 /* Discover wedges on this disk. */ 332 dkwedge_discover(&sd->sc_dk); 333 334 sd_set_properties(sd); 335 } 336 337 static int 338 sdactivate(struct device *self, enum devact act) 339 { 340 int rv = 0; 341 342 switch (act) { 343 case DVACT_ACTIVATE: 344 rv = EOPNOTSUPP; 345 break; 346 347 case DVACT_DEACTIVATE: 348 /* 349 * Nothing to do; we key off the device's DVF_ACTIVE. 350 */ 351 break; 352 } 353 return (rv); 354 } 355 356 static int 357 sddetach(struct device *self, int flags) 358 { 359 struct sd_softc *sd = device_private(self); 360 int s, bmaj, cmaj, i, mn; 361 362 /* locate the major number */ 363 bmaj = bdevsw_lookup_major(&sd_bdevsw); 364 cmaj = cdevsw_lookup_major(&sd_cdevsw); 365 366 /* Nuke the vnodes for any open instances */ 367 for (i = 0; i < MAXPARTITIONS; i++) { 368 mn = SDMINOR(device_unit(self), i); 369 vdevgone(bmaj, mn, mn, VBLK); 370 vdevgone(cmaj, mn, mn, VCHR); 371 } 372 373 /* kill any pending restart */ 374 callout_stop(&sd->sc_callout); 375 376 /* Delete all of our wedges. */ 377 dkwedge_delall(&sd->sc_dk); 378 379 s = splbio(); 380 381 /* Kill off any queued buffers. */ 382 bufq_drain(sd->buf_queue); 383 384 bufq_free(sd->buf_queue); 385 386 /* Kill off any pending commands. */ 387 scsipi_kill_pending(sd->sc_periph); 388 389 splx(s); 390 391 /* Detach from the disk list. */ 392 disk_detach(&sd->sc_dk); 393 394 /* Get rid of the shutdown hook. */ 395 shutdownhook_disestablish(sd->sc_sdhook); 396 397 #if NRND > 0 398 /* Unhook the entropy source. */ 399 rnd_detach_source(&sd->rnd_source); 400 #endif 401 402 return (0); 403 } 404 405 /* 406 * open the device. Make sure the partition info is a up-to-date as can be. 407 */ 408 static int 409 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 410 { 411 struct sd_softc *sd; 412 struct scsipi_periph *periph; 413 struct scsipi_adapter *adapt; 414 int unit, part; 415 int error; 416 417 unit = SDUNIT(dev); 418 if (unit >= sd_cd.cd_ndevs) 419 return (ENXIO); 420 sd = sd_cd.cd_devs[unit]; 421 if (sd == NULL) 422 return (ENXIO); 423 424 if (!device_is_active(&sd->sc_dev)) 425 return (ENODEV); 426 427 part = SDPART(dev); 428 429 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 430 return (error); 431 432 /* 433 * If there are wedges, and this is not RAW_PART, then we 434 * need to fail. 435 */ 436 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 437 error = EBUSY; 438 goto bad1; 439 } 440 441 periph = sd->sc_periph; 442 adapt = periph->periph_channel->chan_adapter; 443 444 SC_DEBUG(periph, SCSIPI_DB1, 445 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 446 sd_cd.cd_ndevs, part)); 447 448 /* 449 * If this is the first open of this device, add a reference 450 * to the adapter. 451 */ 452 if (sd->sc_dk.dk_openmask == 0 && 453 (error = scsipi_adapter_addref(adapt)) != 0) 454 goto bad1; 455 456 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 457 /* 458 * If any partition is open, but the disk has been invalidated, 459 * disallow further opens of non-raw partition 460 */ 461 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 462 (part != RAW_PART || fmt != S_IFCHR)) { 463 error = EIO; 464 goto bad2; 465 } 466 } else { 467 int silent; 468 469 if (part == RAW_PART && fmt == S_IFCHR) 470 silent = XS_CTL_SILENT; 471 else 472 silent = 0; 473 474 /* Check that it is still responding and ok. */ 475 error = scsipi_test_unit_ready(periph, 476 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 477 silent); 478 479 /* 480 * Start the pack spinning if necessary. Always allow the 481 * raw parition to be opened, for raw IOCTLs. Data transfers 482 * will check for SDEV_MEDIA_LOADED. 483 */ 484 if (error == EIO) { 485 int error2; 486 487 error2 = scsipi_start(periph, SSS_START, silent); 488 switch (error2) { 489 case 0: 490 error = 0; 491 break; 492 case EIO: 493 case EINVAL: 494 break; 495 default: 496 error = error2; 497 break; 498 } 499 } 500 if (error) { 501 if (silent) 502 goto out; 503 goto bad2; 504 } 505 506 periph->periph_flags |= PERIPH_OPEN; 507 508 if (periph->periph_flags & PERIPH_REMOVABLE) { 509 /* Lock the pack in. */ 510 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 511 XS_CTL_IGNORE_ILLEGAL_REQUEST | 512 XS_CTL_IGNORE_MEDIA_CHANGE | 513 XS_CTL_SILENT); 514 if (error) 515 goto bad3; 516 } 517 518 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 519 int param_error; 520 periph->periph_flags |= PERIPH_MEDIA_LOADED; 521 522 /* 523 * Load the physical device parameters. 524 * 525 * Note that if media is present but unformatted, 526 * we allow the open (so that it can be formatted!). 527 * The drive should refuse real I/O, if the media is 528 * unformatted. 529 */ 530 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 531 == SDGP_RESULT_OFFLINE) { 532 error = ENXIO; 533 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 534 goto bad3; 535 } 536 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 537 538 /* Load the partition info if not already loaded. */ 539 if (param_error == 0) { 540 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 541 error = EIO; 542 goto bad3; 543 } 544 SC_DEBUG(periph, SCSIPI_DB3, 545 ("Disklabel loaded ")); 546 } 547 } 548 } 549 550 /* Check that the partition exists. */ 551 if (part != RAW_PART && 552 (part >= sd->sc_dk.dk_label->d_npartitions || 553 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 554 error = ENXIO; 555 goto bad3; 556 } 557 558 out: /* Insure only one open at a time. */ 559 switch (fmt) { 560 case S_IFCHR: 561 sd->sc_dk.dk_copenmask |= (1 << part); 562 break; 563 case S_IFBLK: 564 sd->sc_dk.dk_bopenmask |= (1 << part); 565 break; 566 } 567 sd->sc_dk.dk_openmask = 568 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 569 570 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 571 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 572 return (0); 573 574 bad3: 575 if (sd->sc_dk.dk_openmask == 0) { 576 if (periph->periph_flags & PERIPH_REMOVABLE) 577 scsipi_prevent(periph, SPAMR_ALLOW, 578 XS_CTL_IGNORE_ILLEGAL_REQUEST | 579 XS_CTL_IGNORE_MEDIA_CHANGE | 580 XS_CTL_SILENT); 581 periph->periph_flags &= ~PERIPH_OPEN; 582 } 583 584 bad2: 585 if (sd->sc_dk.dk_openmask == 0) 586 scsipi_adapter_delref(adapt); 587 588 bad1: 589 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 590 return (error); 591 } 592 593 /* 594 * close the device.. only called if we are the LAST occurence of an open 595 * device. Convenient now but usually a pain. 596 */ 597 static int 598 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 599 { 600 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 601 struct scsipi_periph *periph = sd->sc_periph; 602 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 603 int part = SDPART(dev); 604 int error; 605 606 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 607 return (error); 608 609 switch (fmt) { 610 case S_IFCHR: 611 sd->sc_dk.dk_copenmask &= ~(1 << part); 612 break; 613 case S_IFBLK: 614 sd->sc_dk.dk_bopenmask &= ~(1 << part); 615 break; 616 } 617 sd->sc_dk.dk_openmask = 618 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 619 620 if (sd->sc_dk.dk_openmask == 0) { 621 /* 622 * If the disk cache needs flushing, and the disk supports 623 * it, do it now. 624 */ 625 if ((sd->flags & SDF_DIRTY) != 0) { 626 if (sd_flush(sd, 0)) { 627 printf("%s: cache synchronization failed\n", 628 sd->sc_dev.dv_xname); 629 sd->flags &= ~SDF_FLUSHING; 630 } else 631 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 632 } 633 634 scsipi_wait_drain(periph); 635 636 if (periph->periph_flags & PERIPH_REMOVABLE) 637 scsipi_prevent(periph, SPAMR_ALLOW, 638 XS_CTL_IGNORE_ILLEGAL_REQUEST | 639 XS_CTL_IGNORE_NOT_READY | 640 XS_CTL_SILENT); 641 periph->periph_flags &= ~PERIPH_OPEN; 642 643 scsipi_wait_drain(periph); 644 645 scsipi_adapter_delref(adapt); 646 } 647 648 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 649 return (0); 650 } 651 652 /* 653 * Actually translate the requested transfer into one the physical driver 654 * can understand. The transfer is described by a buf and will include 655 * only one physical transfer. 656 */ 657 static void 658 sdstrategy(struct buf *bp) 659 { 660 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 661 struct scsipi_periph *periph = sd->sc_periph; 662 struct disklabel *lp; 663 daddr_t blkno; 664 int s; 665 boolean_t sector_aligned; 666 667 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 668 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 669 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 670 /* 671 * If the device has been made invalid, error out 672 */ 673 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 674 !device_is_active(&sd->sc_dev)) { 675 if (periph->periph_flags & PERIPH_OPEN) 676 bp->b_error = EIO; 677 else 678 bp->b_error = ENODEV; 679 goto bad; 680 } 681 682 lp = sd->sc_dk.dk_label; 683 684 /* 685 * The transfer must be a whole number of blocks, offset must not be 686 * negative. 687 */ 688 if (lp->d_secsize == DEV_BSIZE) { 689 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 690 } else { 691 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 692 } 693 if (!sector_aligned || bp->b_blkno < 0) { 694 bp->b_error = EINVAL; 695 goto bad; 696 } 697 /* 698 * If it's a null transfer, return immediatly 699 */ 700 if (bp->b_bcount == 0) 701 goto done; 702 703 /* 704 * Do bounds checking, adjust transfer. if error, process. 705 * If end of partition, just return. 706 */ 707 if (SDPART(bp->b_dev) == RAW_PART) { 708 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 709 sd->params.disksize512) <= 0) 710 goto done; 711 } else { 712 if (bounds_check_with_label(&sd->sc_dk, bp, 713 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 714 goto done; 715 } 716 717 /* 718 * Now convert the block number to absolute and put it in 719 * terms of the device's logical block size. 720 */ 721 if (lp->d_secsize == DEV_BSIZE) 722 blkno = bp->b_blkno; 723 else if (lp->d_secsize > DEV_BSIZE) 724 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 725 else 726 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 727 728 if (SDPART(bp->b_dev) != RAW_PART) 729 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 730 731 bp->b_rawblkno = blkno; 732 733 s = splbio(); 734 735 /* 736 * Place it in the queue of disk activities for this disk. 737 * 738 * XXX Only do disksort() if the current operating mode does not 739 * XXX include tagged queueing. 740 */ 741 BUFQ_PUT(sd->buf_queue, bp); 742 743 /* 744 * Tell the device to get going on the transfer if it's 745 * not doing anything, otherwise just wait for completion 746 */ 747 sdstart(sd->sc_periph); 748 749 splx(s); 750 return; 751 752 bad: 753 bp->b_flags |= B_ERROR; 754 done: 755 /* 756 * Correctly set the buf to indicate a completed xfer 757 */ 758 bp->b_resid = bp->b_bcount; 759 biodone(bp); 760 } 761 762 /* 763 * sdstart looks to see if there is a buf waiting for the device 764 * and that the device is not already busy. If both are true, 765 * It dequeues the buf and creates a scsi command to perform the 766 * transfer in the buf. The transfer request will call scsipi_done 767 * on completion, which will in turn call this routine again 768 * so that the next queued transfer is performed. 769 * The bufs are queued by the strategy routine (sdstrategy) 770 * 771 * This routine is also called after other non-queued requests 772 * have been made of the scsi driver, to ensure that the queue 773 * continues to be drained. 774 * 775 * must be called at the correct (highish) spl level 776 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 777 */ 778 static void 779 sdstart(struct scsipi_periph *periph) 780 { 781 struct sd_softc *sd = (void *)periph->periph_dev; 782 struct disklabel *lp = sd->sc_dk.dk_label; 783 struct buf *bp = 0; 784 struct scsipi_rw_16 cmd16; 785 struct scsipi_rw_10 cmd_big; 786 struct scsi_rw_6 cmd_small; 787 struct scsipi_generic *cmdp; 788 struct scsipi_xfer *xs; 789 int nblks, cmdlen, error, flags; 790 791 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 792 /* 793 * Check if the device has room for another command 794 */ 795 while (periph->periph_active < periph->periph_openings) { 796 /* 797 * there is excess capacity, but a special waits 798 * It'll need the adapter as soon as we clear out of the 799 * way and let it run (user level wait). 800 */ 801 if (periph->periph_flags & PERIPH_WAITING) { 802 periph->periph_flags &= ~PERIPH_WAITING; 803 wakeup((caddr_t)periph); 804 return; 805 } 806 807 /* 808 * If the device has become invalid, abort all the 809 * reads and writes until all files have been closed and 810 * re-opened 811 */ 812 if (__predict_false( 813 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 814 if ((bp = BUFQ_GET(sd->buf_queue)) != NULL) { 815 bp->b_error = EIO; 816 bp->b_flags |= B_ERROR; 817 bp->b_resid = bp->b_bcount; 818 biodone(bp); 819 continue; 820 } else { 821 return; 822 } 823 } 824 825 /* 826 * See if there is a buf with work for us to do.. 827 */ 828 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 829 return; 830 831 /* 832 * We have a buf, now we should make a command. 833 */ 834 835 if (lp->d_secsize == DEV_BSIZE) 836 nblks = bp->b_bcount >> DEV_BSHIFT; 837 else 838 nblks = howmany(bp->b_bcount, lp->d_secsize); 839 840 /* 841 * Fill out the scsi command. Use the smallest CDB possible 842 * (6-byte, 10-byte, or 16-byte). 843 */ 844 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 845 ((nblks & 0xff) == nblks) && 846 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 847 /* 6-byte CDB */ 848 memset(&cmd_small, 0, sizeof(cmd_small)); 849 cmd_small.opcode = (bp->b_flags & B_READ) ? 850 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 851 _lto3b(bp->b_rawblkno, cmd_small.addr); 852 cmd_small.length = nblks & 0xff; 853 cmdlen = sizeof(cmd_small); 854 cmdp = (struct scsipi_generic *)&cmd_small; 855 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 856 /* 10-byte CDB */ 857 memset(&cmd_big, 0, sizeof(cmd_big)); 858 cmd_big.opcode = (bp->b_flags & B_READ) ? 859 READ_10 : WRITE_10; 860 _lto4b(bp->b_rawblkno, cmd_big.addr); 861 _lto2b(nblks, cmd_big.length); 862 cmdlen = sizeof(cmd_big); 863 cmdp = (struct scsipi_generic *)&cmd_big; 864 } else { 865 /* 16-byte CDB */ 866 memset(&cmd16, 0, sizeof(cmd16)); 867 cmd16.opcode = (bp->b_flags & B_READ) ? 868 READ_16 : WRITE_16; 869 _lto8b(bp->b_rawblkno, cmd16.addr); 870 _lto4b(nblks, cmd16.length); 871 cmdlen = sizeof(cmd16); 872 cmdp = (struct scsipi_generic *)&cmd16; 873 } 874 875 /* Instrumentation. */ 876 disk_busy(&sd->sc_dk); 877 878 /* 879 * Mark the disk dirty so that the cache will be 880 * flushed on close. 881 */ 882 if ((bp->b_flags & B_READ) == 0) 883 sd->flags |= SDF_DIRTY; 884 885 /* 886 * Figure out what flags to use. 887 */ 888 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 889 if (bp->b_flags & B_READ) 890 flags |= XS_CTL_DATA_IN; 891 else 892 flags |= XS_CTL_DATA_OUT; 893 894 /* 895 * Call the routine that chats with the adapter. 896 * Note: we cannot sleep as we may be an interrupt 897 */ 898 xs = scsipi_make_xs(periph, cmdp, cmdlen, 899 (u_char *)bp->b_data, bp->b_bcount, 900 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 901 if (__predict_false(xs == NULL)) { 902 /* 903 * out of memory. Keep this buffer in the queue, and 904 * retry later. 905 */ 906 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 907 periph); 908 return; 909 } 910 /* 911 * need to dequeue the buffer before queuing the command, 912 * because cdstart may be called recursively from the 913 * HBA driver 914 */ 915 #ifdef DIAGNOSTIC 916 if (BUFQ_GET(sd->buf_queue) != bp) 917 panic("sdstart(): dequeued wrong buf"); 918 #else 919 BUFQ_GET(sd->buf_queue); 920 #endif 921 error = scsipi_execute_xs(xs); 922 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 923 KASSERT(error == 0); 924 } 925 } 926 927 static void 928 sdrestart(void *v) 929 { 930 int s = splbio(); 931 sdstart((struct scsipi_periph *)v); 932 splx(s); 933 } 934 935 static void 936 sddone(struct scsipi_xfer *xs, int error) 937 { 938 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 939 struct buf *bp = xs->bp; 940 941 if (sd->flags & SDF_FLUSHING) { 942 /* Flush completed, no longer dirty. */ 943 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 944 } 945 946 if (bp) { 947 bp->b_error = error; 948 bp->b_resid = xs->resid; 949 if (error) { 950 /* on a read/write error bp->b_resid is zero, so fix */ 951 bp->b_resid =bp->b_bcount; 952 bp->b_flags |= B_ERROR; 953 } 954 955 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 956 (bp->b_flags & B_READ)); 957 #if NRND > 0 958 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 959 #endif 960 961 biodone(bp); 962 } 963 } 964 965 static void 966 sdminphys(struct buf *bp) 967 { 968 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 969 long xmax; 970 971 /* 972 * If the device is ancient, we want to make sure that 973 * the transfer fits into a 6-byte cdb. 974 * 975 * XXX Note that the SCSI-I spec says that 256-block transfers 976 * are allowed in a 6-byte read/write, and are specified 977 * by settng the "length" to 0. However, we're conservative 978 * here, allowing only 255-block transfers in case an 979 * ancient device gets confused by length == 0. A length of 0 980 * in a 10-byte read/write actually means 0 blocks. 981 */ 982 if ((sd->flags & SDF_ANCIENT) && 983 ((sd->sc_periph->periph_flags & 984 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 985 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 986 987 if (bp->b_bcount > xmax) 988 bp->b_bcount = xmax; 989 } 990 991 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 992 } 993 994 static int 995 sdread(dev_t dev, struct uio *uio, int ioflag) 996 { 997 998 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 999 } 1000 1001 static int 1002 sdwrite(dev_t dev, struct uio *uio, int ioflag) 1003 { 1004 1005 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1006 } 1007 1008 /* 1009 * Perform special action on behalf of the user 1010 * Knows about the internals of this device 1011 */ 1012 static int 1013 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l) 1014 { 1015 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1016 struct scsipi_periph *periph = sd->sc_periph; 1017 int part = SDPART(dev); 1018 int error = 0; 1019 #ifdef __HAVE_OLD_DISKLABEL 1020 struct disklabel *newlabel = NULL; 1021 #endif 1022 1023 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1024 1025 /* 1026 * If the device is not valid, some IOCTLs can still be 1027 * handled on the raw partition. Check this here. 1028 */ 1029 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1030 switch (cmd) { 1031 case DIOCKLABEL: 1032 case DIOCWLABEL: 1033 case DIOCLOCK: 1034 case DIOCEJECT: 1035 case ODIOCEJECT: 1036 case DIOCGCACHE: 1037 case DIOCSCACHE: 1038 case SCIOCIDENTIFY: 1039 case OSCIOCIDENTIFY: 1040 case SCIOCCOMMAND: 1041 case SCIOCDEBUG: 1042 if (part == RAW_PART) 1043 break; 1044 /* FALLTHROUGH */ 1045 default: 1046 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1047 return (ENODEV); 1048 else 1049 return (EIO); 1050 } 1051 } 1052 1053 switch (cmd) { 1054 case DIOCGDINFO: 1055 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1056 return (0); 1057 1058 #ifdef __HAVE_OLD_DISKLABEL 1059 case ODIOCGDINFO: 1060 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1061 if (newlabel == NULL) 1062 return EIO; 1063 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1064 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1065 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1066 else 1067 error = ENOTTY; 1068 free(newlabel, M_TEMP); 1069 return error; 1070 #endif 1071 1072 case DIOCGPART: 1073 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1074 ((struct partinfo *)addr)->part = 1075 &sd->sc_dk.dk_label->d_partitions[part]; 1076 return (0); 1077 1078 case DIOCWDINFO: 1079 case DIOCSDINFO: 1080 #ifdef __HAVE_OLD_DISKLABEL 1081 case ODIOCWDINFO: 1082 case ODIOCSDINFO: 1083 #endif 1084 { 1085 struct disklabel *lp; 1086 1087 if ((flag & FWRITE) == 0) 1088 return (EBADF); 1089 1090 #ifdef __HAVE_OLD_DISKLABEL 1091 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1092 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1093 if (newlabel == NULL) 1094 return EIO; 1095 memset(newlabel, 0, sizeof newlabel); 1096 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1097 lp = newlabel; 1098 } else 1099 #endif 1100 lp = (struct disklabel *)addr; 1101 1102 if ((error = lockmgr(&sd->sc_dk.dk_openlock, 1103 LK_EXCLUSIVE, NULL)) != 0) 1104 goto bad; 1105 sd->flags |= SDF_LABELLING; 1106 1107 error = setdisklabel(sd->sc_dk.dk_label, 1108 lp, /*sd->sc_dk.dk_openmask : */0, 1109 sd->sc_dk.dk_cpulabel); 1110 if (error == 0) { 1111 if (cmd == DIOCWDINFO 1112 #ifdef __HAVE_OLD_DISKLABEL 1113 || cmd == ODIOCWDINFO 1114 #endif 1115 ) 1116 error = writedisklabel(SDLABELDEV(dev), 1117 sdstrategy, sd->sc_dk.dk_label, 1118 sd->sc_dk.dk_cpulabel); 1119 } 1120 1121 sd->flags &= ~SDF_LABELLING; 1122 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1123 bad: 1124 #ifdef __HAVE_OLD_DISKLABEL 1125 if (newlabel != NULL) 1126 free(newlabel, M_TEMP); 1127 #endif 1128 return (error); 1129 } 1130 1131 case DIOCKLABEL: 1132 if (*(int *)addr) 1133 periph->periph_flags |= PERIPH_KEEP_LABEL; 1134 else 1135 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1136 return (0); 1137 1138 case DIOCWLABEL: 1139 if ((flag & FWRITE) == 0) 1140 return (EBADF); 1141 if (*(int *)addr) 1142 sd->flags |= SDF_WLABEL; 1143 else 1144 sd->flags &= ~SDF_WLABEL; 1145 return (0); 1146 1147 case DIOCLOCK: 1148 if (periph->periph_flags & PERIPH_REMOVABLE) 1149 return (scsipi_prevent(periph, 1150 (*(int *)addr) ? 1151 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1152 else 1153 return (ENOTTY); 1154 1155 case DIOCEJECT: 1156 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1157 return (ENOTTY); 1158 if (*(int *)addr == 0) { 1159 /* 1160 * Don't force eject: check that we are the only 1161 * partition open. If so, unlock it. 1162 */ 1163 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1164 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1165 sd->sc_dk.dk_openmask) { 1166 error = scsipi_prevent(periph, SPAMR_ALLOW, 1167 XS_CTL_IGNORE_NOT_READY); 1168 if (error) 1169 return (error); 1170 } else { 1171 return (EBUSY); 1172 } 1173 } 1174 /* FALLTHROUGH */ 1175 case ODIOCEJECT: 1176 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1177 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1178 1179 case DIOCGDEFLABEL: 1180 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1181 return (0); 1182 1183 #ifdef __HAVE_OLD_DISKLABEL 1184 case ODIOCGDEFLABEL: 1185 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1186 if (newlabel == NULL) 1187 return EIO; 1188 sdgetdefaultlabel(sd, newlabel); 1189 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1190 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1191 else 1192 error = ENOTTY; 1193 free(newlabel, M_TEMP); 1194 return error; 1195 #endif 1196 1197 case DIOCGCACHE: 1198 return (sd_getcache(sd, (int *) addr)); 1199 1200 case DIOCSCACHE: 1201 if ((flag & FWRITE) == 0) 1202 return (EBADF); 1203 return (sd_setcache(sd, *(int *) addr)); 1204 1205 case DIOCCACHESYNC: 1206 /* 1207 * XXX Do we really need to care about having a writable 1208 * file descriptor here? 1209 */ 1210 if ((flag & FWRITE) == 0) 1211 return (EBADF); 1212 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1213 error = sd_flush(sd, 0); 1214 if (error) 1215 sd->flags &= ~SDF_FLUSHING; 1216 else 1217 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1218 } else 1219 error = 0; 1220 return (error); 1221 1222 case DIOCAWEDGE: 1223 { 1224 struct dkwedge_info *dkw = (void *) addr; 1225 1226 if ((flag & FWRITE) == 0) 1227 return (EBADF); 1228 1229 /* If the ioctl happens here, the parent is us. */ 1230 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1231 return (dkwedge_add(dkw)); 1232 } 1233 1234 case DIOCDWEDGE: 1235 { 1236 struct dkwedge_info *dkw = (void *) addr; 1237 1238 if ((flag & FWRITE) == 0) 1239 return (EBADF); 1240 1241 /* If the ioctl happens here, the parent is us. */ 1242 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1243 return (dkwedge_del(dkw)); 1244 } 1245 1246 case DIOCLWEDGES: 1247 { 1248 struct dkwedge_list *dkwl = (void *) addr; 1249 1250 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1251 } 1252 1253 default: 1254 if (part != RAW_PART) 1255 return (ENOTTY); 1256 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1257 } 1258 1259 #ifdef DIAGNOSTIC 1260 panic("sdioctl: impossible"); 1261 #endif 1262 } 1263 1264 static void 1265 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1266 { 1267 1268 memset(lp, 0, sizeof(struct disklabel)); 1269 1270 lp->d_secsize = sd->params.blksize; 1271 lp->d_ntracks = sd->params.heads; 1272 lp->d_nsectors = sd->params.sectors; 1273 lp->d_ncylinders = sd->params.cyls; 1274 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1275 1276 switch (scsipi_periph_bustype(sd->sc_periph)) { 1277 case SCSIPI_BUSTYPE_SCSI: 1278 lp->d_type = DTYPE_SCSI; 1279 break; 1280 case SCSIPI_BUSTYPE_ATAPI: 1281 lp->d_type = DTYPE_ATAPI; 1282 break; 1283 } 1284 /* 1285 * XXX 1286 * We could probe the mode pages to figure out what kind of disc it is. 1287 * Is this worthwhile? 1288 */ 1289 strncpy(lp->d_typename, sd->name, 16); 1290 strncpy(lp->d_packname, "fictitious", 16); 1291 lp->d_secperunit = sd->params.disksize; 1292 lp->d_rpm = sd->params.rot_rate; 1293 lp->d_interleave = 1; 1294 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1295 D_REMOVABLE : 0; 1296 1297 lp->d_partitions[RAW_PART].p_offset = 0; 1298 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1299 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1300 lp->d_npartitions = RAW_PART + 1; 1301 1302 lp->d_magic = DISKMAGIC; 1303 lp->d_magic2 = DISKMAGIC; 1304 lp->d_checksum = dkcksum(lp); 1305 } 1306 1307 1308 /* 1309 * Load the label information on the named device 1310 */ 1311 static int 1312 sdgetdisklabel(struct sd_softc *sd) 1313 { 1314 struct disklabel *lp = sd->sc_dk.dk_label; 1315 const char *errstring; 1316 1317 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1318 1319 sdgetdefaultlabel(sd, lp); 1320 1321 if (lp->d_secpercyl == 0) { 1322 lp->d_secpercyl = 100; 1323 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1324 } 1325 1326 /* 1327 * Call the generic disklabel extraction routine 1328 */ 1329 errstring = readdisklabel(MAKESDDEV(0, device_unit(&sd->sc_dev), 1330 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1331 if (errstring) { 1332 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1333 return EIO; 1334 } 1335 return 0; 1336 } 1337 1338 static void 1339 sd_shutdown(void *arg) 1340 { 1341 struct sd_softc *sd = arg; 1342 1343 /* 1344 * If the disk cache needs to be flushed, and the disk supports 1345 * it, flush it. We're cold at this point, so we poll for 1346 * completion. 1347 */ 1348 if ((sd->flags & SDF_DIRTY) != 0) { 1349 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1350 printf("%s: cache synchronization failed\n", 1351 sd->sc_dev.dv_xname); 1352 sd->flags &= ~SDF_FLUSHING; 1353 } else 1354 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1355 } 1356 } 1357 1358 /* 1359 * Check Errors 1360 */ 1361 static int 1362 sd_interpret_sense(struct scsipi_xfer *xs) 1363 { 1364 struct scsipi_periph *periph = xs->xs_periph; 1365 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1366 struct sd_softc *sd = (void *)periph->periph_dev; 1367 int s, error, retval = EJUSTRETURN; 1368 1369 /* 1370 * If the periph is already recovering, just do the normal 1371 * error processing. 1372 */ 1373 if (periph->periph_flags & PERIPH_RECOVERING) 1374 return (retval); 1375 1376 /* 1377 * Ignore errors from accessing illegal fields (e.g. trying to 1378 * lock the door of a digicam, which doesn't have a door that 1379 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1380 */ 1381 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1382 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1383 sense->asc == 0x24 && 1384 sense->ascq == 0x00) { /* Illegal field in CDB */ 1385 if (!(xs->xs_control & XS_CTL_SILENT)) { 1386 scsipi_printaddr(periph); 1387 printf("no door lock\n"); 1388 } 1389 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1390 return (retval); 1391 } 1392 1393 1394 1395 /* 1396 * If the device is not open yet, let the generic code handle it. 1397 */ 1398 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1399 return (retval); 1400 1401 /* 1402 * If it isn't a extended or extended/deferred error, let 1403 * the generic code handle it. 1404 */ 1405 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1406 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1407 return (retval); 1408 1409 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1410 sense->asc == 0x4) { 1411 if (sense->ascq == 0x01) { 1412 /* 1413 * Unit In The Process Of Becoming Ready. 1414 */ 1415 printf("%s: waiting for pack to spin up...\n", 1416 sd->sc_dev.dv_xname); 1417 if (!callout_pending(&periph->periph_callout)) 1418 scsipi_periph_freeze(periph, 1); 1419 callout_reset(&periph->periph_callout, 1420 5 * hz, scsipi_periph_timed_thaw, periph); 1421 retval = ERESTART; 1422 } else if (sense->ascq == 0x02) { 1423 printf("%s: pack is stopped, restarting...\n", 1424 sd->sc_dev.dv_xname); 1425 s = splbio(); 1426 periph->periph_flags |= PERIPH_RECOVERING; 1427 splx(s); 1428 error = scsipi_start(periph, SSS_START, 1429 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1430 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1431 if (error) { 1432 printf("%s: unable to restart pack\n", 1433 sd->sc_dev.dv_xname); 1434 retval = error; 1435 } else 1436 retval = ERESTART; 1437 s = splbio(); 1438 periph->periph_flags &= ~PERIPH_RECOVERING; 1439 splx(s); 1440 } 1441 } 1442 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1443 sense->asc == 0x31 && 1444 sense->ascq == 0x00) { /* maybe for any asq ? */ 1445 /* Medium Format Corrupted */ 1446 retval = EFTYPE; 1447 } 1448 return (retval); 1449 } 1450 1451 1452 static int 1453 sdsize(dev_t dev) 1454 { 1455 struct sd_softc *sd; 1456 int part, unit, omask; 1457 int size; 1458 1459 unit = SDUNIT(dev); 1460 if (unit >= sd_cd.cd_ndevs) 1461 return (-1); 1462 sd = sd_cd.cd_devs[unit]; 1463 if (sd == NULL) 1464 return (-1); 1465 1466 if (!device_is_active(&sd->sc_dev)) 1467 return (-1); 1468 1469 part = SDPART(dev); 1470 omask = sd->sc_dk.dk_openmask & (1 << part); 1471 1472 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1473 return (-1); 1474 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1475 size = -1; 1476 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1477 size = -1; 1478 else 1479 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1480 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1481 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1482 return (-1); 1483 return (size); 1484 } 1485 1486 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1487 static struct scsipi_xfer sx; 1488 static int sddoingadump; 1489 1490 /* 1491 * dump all of physical memory into the partition specified, starting 1492 * at offset 'dumplo' into the partition. 1493 */ 1494 static int 1495 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1496 { 1497 struct sd_softc *sd; /* disk unit to do the I/O */ 1498 struct disklabel *lp; /* disk's disklabel */ 1499 int unit, part; 1500 int sectorsize; /* size of a disk sector */ 1501 int nsects; /* number of sectors in partition */ 1502 int sectoff; /* sector offset of partition */ 1503 int totwrt; /* total number of sectors left to write */ 1504 int nwrt; /* current number of sectors to write */ 1505 struct scsipi_rw_10 cmd; /* write command */ 1506 struct scsipi_xfer *xs; /* ... convenience */ 1507 struct scsipi_periph *periph; 1508 struct scsipi_channel *chan; 1509 1510 /* Check if recursive dump; if so, punt. */ 1511 if (sddoingadump) 1512 return (EFAULT); 1513 1514 /* Mark as active early. */ 1515 sddoingadump = 1; 1516 1517 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1518 part = SDPART(dev); 1519 1520 /* Check for acceptable drive number. */ 1521 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1522 return (ENXIO); 1523 1524 if (!device_is_active(&sd->sc_dev)) 1525 return (ENODEV); 1526 1527 periph = sd->sc_periph; 1528 chan = periph->periph_channel; 1529 1530 /* Make sure it was initialized. */ 1531 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1532 return (ENXIO); 1533 1534 /* Convert to disk sectors. Request must be a multiple of size. */ 1535 lp = sd->sc_dk.dk_label; 1536 sectorsize = lp->d_secsize; 1537 if ((size % sectorsize) != 0) 1538 return (EFAULT); 1539 totwrt = size / sectorsize; 1540 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1541 1542 nsects = lp->d_partitions[part].p_size; 1543 sectoff = lp->d_partitions[part].p_offset; 1544 1545 /* Check transfer bounds against partition size. */ 1546 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1547 return (EINVAL); 1548 1549 /* Offset block number to start of partition. */ 1550 blkno += sectoff; 1551 1552 xs = &sx; 1553 1554 while (totwrt > 0) { 1555 nwrt = totwrt; /* XXX */ 1556 #ifndef SD_DUMP_NOT_TRUSTED 1557 /* 1558 * Fill out the scsi command 1559 */ 1560 memset(&cmd, 0, sizeof(cmd)); 1561 cmd.opcode = WRITE_10; 1562 _lto4b(blkno, cmd.addr); 1563 _lto2b(nwrt, cmd.length); 1564 /* 1565 * Fill out the scsipi_xfer structure 1566 * Note: we cannot sleep as we may be an interrupt 1567 * don't use scsipi_command() as it may want to wait 1568 * for an xs. 1569 */ 1570 memset(xs, 0, sizeof(sx)); 1571 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1572 XS_CTL_DATA_OUT; 1573 xs->xs_status = 0; 1574 xs->xs_periph = periph; 1575 xs->xs_retries = SDRETRIES; 1576 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1577 xs->cmd = (struct scsipi_generic *)&cmd; 1578 xs->cmdlen = sizeof(cmd); 1579 xs->resid = nwrt * sectorsize; 1580 xs->error = XS_NOERROR; 1581 xs->bp = 0; 1582 xs->data = va; 1583 xs->datalen = nwrt * sectorsize; 1584 1585 /* 1586 * Pass all this info to the scsi driver. 1587 */ 1588 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1589 if ((xs->xs_status & XS_STS_DONE) == 0 || 1590 xs->error != XS_NOERROR) 1591 return (EIO); 1592 #else /* SD_DUMP_NOT_TRUSTED */ 1593 /* Let's just talk about this first... */ 1594 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1595 delay(500 * 1000); /* half a second */ 1596 #endif /* SD_DUMP_NOT_TRUSTED */ 1597 1598 /* update block count */ 1599 totwrt -= nwrt; 1600 blkno += nwrt; 1601 va += sectorsize * nwrt; 1602 } 1603 sddoingadump = 0; 1604 return (0); 1605 } 1606 1607 static int 1608 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1609 int page, int flags, int *big) 1610 { 1611 1612 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1613 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1614 *big = 1; 1615 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1616 size + sizeof(struct scsi_mode_parameter_header_10), 1617 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1618 } else { 1619 *big = 0; 1620 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1621 size + sizeof(struct scsi_mode_parameter_header_6), 1622 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1623 } 1624 } 1625 1626 static int 1627 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1628 int flags, int big) 1629 { 1630 1631 if (big) { 1632 struct scsi_mode_parameter_header_10 *header = sense; 1633 1634 _lto2b(0, header->data_length); 1635 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1636 size + sizeof(struct scsi_mode_parameter_header_10), 1637 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1638 } else { 1639 struct scsi_mode_parameter_header_6 *header = sense; 1640 1641 header->data_length = 0; 1642 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1643 size + sizeof(struct scsi_mode_parameter_header_6), 1644 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1645 } 1646 } 1647 1648 /* 1649 * sd_validate_blksize: 1650 * 1651 * Validate the block size. Print error if periph is specified, 1652 */ 1653 static int 1654 sd_validate_blksize(struct scsipi_periph *periph, int len) 1655 { 1656 1657 switch (len) { 1658 case 256: 1659 case 512: 1660 case 1024: 1661 case 2048: 1662 case 4096: 1663 return 1; 1664 } 1665 1666 if (periph) { 1667 scsipi_printaddr(periph); 1668 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1669 (len ^ (1 << (ffs(len) - 1))) ? 1670 "preposterous" : "unsupported", 1671 len, SD_DEFAULT_BLKSIZE); 1672 } 1673 1674 return 0; 1675 } 1676 1677 /* 1678 * sd_read_capacity: 1679 * 1680 * Find out from the device what its capacity is. 1681 */ 1682 static u_int64_t 1683 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1684 { 1685 union { 1686 struct scsipi_read_capacity_10 cmd; 1687 struct scsipi_read_capacity_16 cmd16; 1688 } cmd; 1689 union { 1690 struct scsipi_read_capacity_10_data data; 1691 struct scsipi_read_capacity_16_data data16; 1692 } data; 1693 1694 memset(&cmd, 0, sizeof(cmd)); 1695 cmd.cmd.opcode = READ_CAPACITY_10; 1696 1697 /* 1698 * If the command works, interpret the result as a 4 byte 1699 * number of blocks 1700 */ 1701 memset(&data.data, 0, sizeof(data.data)); 1702 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1703 (void *)&data.data, sizeof(data.data), SCSIPIRETRIES, 20000, NULL, 1704 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK | XS_CTL_SILENT) != 0) 1705 return (0); 1706 1707 if (_4btol(data.data.addr) != 0xffffffff) { 1708 *blksize = _4btol(data.data.length); 1709 return (_4btol(data.data.addr) + 1); 1710 } 1711 1712 /* 1713 * Device is larger than can be reflected by READ CAPACITY (10). 1714 * Try READ CAPACITY (16). 1715 */ 1716 1717 memset(&cmd, 0, sizeof(cmd)); 1718 cmd.cmd16.opcode = READ_CAPACITY_16; 1719 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1720 _lto4b(sizeof(data.data16), cmd.cmd16.len); 1721 1722 memset(&data.data16, 0, sizeof(data.data16)); 1723 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1724 (void *)&data.data16, sizeof(data.data16), SCSIPIRETRIES, 20000, 1725 NULL, 1726 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK | XS_CTL_SILENT) != 0) 1727 return (0); 1728 1729 *blksize = _4btol(data.data16.length); 1730 return (_8btol(data.data16.addr) + 1); 1731 } 1732 1733 static int 1734 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1735 { 1736 struct { 1737 struct scsi_mode_parameter_header_6 header; 1738 /* no block descriptor */ 1739 u_int8_t pg_code; /* page code (should be 6) */ 1740 u_int8_t pg_length; /* page length (should be 11) */ 1741 u_int8_t wcd; /* bit0: cache disable */ 1742 u_int8_t lbs[2]; /* logical block size */ 1743 u_int8_t size[5]; /* number of log. blocks */ 1744 u_int8_t pp; /* power/performance */ 1745 u_int8_t flags; 1746 u_int8_t resvd; 1747 } scsipi_sense; 1748 u_int64_t blocks; 1749 int error, blksize; 1750 1751 /* 1752 * sd_read_capacity (ie "read capacity") and mode sense page 6 1753 * give the same information. Do both for now, and check 1754 * for consistency. 1755 * XXX probably differs for removable media 1756 */ 1757 dp->blksize = SD_DEFAULT_BLKSIZE; 1758 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1759 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1760 1761 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1762 &scsipi_sense.header, sizeof(scsipi_sense), 1763 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1764 1765 if (error != 0) 1766 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1767 1768 dp->blksize = blksize; 1769 if (!sd_validate_blksize(NULL, dp->blksize)) 1770 dp->blksize = _2btol(scsipi_sense.lbs); 1771 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1772 dp->blksize = SD_DEFAULT_BLKSIZE; 1773 1774 /* 1775 * Create a pseudo-geometry. 1776 */ 1777 dp->heads = 64; 1778 dp->sectors = 32; 1779 dp->cyls = blocks / (dp->heads * dp->sectors); 1780 dp->disksize = _5btol(scsipi_sense.size); 1781 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1782 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1783 (unsigned long long)dp->disksize, 1784 (unsigned long long)blocks); 1785 dp->disksize = blocks; 1786 } 1787 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1788 1789 return (SDGP_RESULT_OK); 1790 } 1791 1792 /* 1793 * Get the scsi driver to send a full inquiry to the * device and use the 1794 * results to fill out the disk parameter structure. 1795 */ 1796 static int 1797 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1798 { 1799 u_int64_t blocks; 1800 int error, blksize; 1801 #if 0 1802 int i; 1803 u_int8_t *p; 1804 #endif 1805 1806 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1807 flags); 1808 if (blocks == 0) { 1809 struct scsipi_read_format_capacities cmd; 1810 struct { 1811 struct scsipi_capacity_list_header header; 1812 struct scsipi_capacity_descriptor desc; 1813 } __attribute__((packed)) data; 1814 1815 memset(&cmd, 0, sizeof(cmd)); 1816 memset(&data, 0, sizeof(data)); 1817 cmd.opcode = READ_FORMAT_CAPACITIES; 1818 _lto2b(sizeof(data), cmd.length); 1819 1820 error = scsipi_command(sd->sc_periph, 1821 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1822 SDRETRIES, 20000, NULL, 1823 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1824 if (error == EFTYPE) { 1825 /* Medium Format Corrupted, handle as not formatted */ 1826 return (SDGP_RESULT_UNFORMATTED); 1827 } 1828 if (error || data.header.length == 0) 1829 return (SDGP_RESULT_OFFLINE); 1830 1831 #if 0 1832 printf("rfc: length=%d\n", data.header.length); 1833 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"); 1834 #endif 1835 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1836 case SCSIPI_CAP_DESC_CODE_RESERVED: 1837 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1838 break; 1839 1840 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1841 return (SDGP_RESULT_UNFORMATTED); 1842 1843 case SCSIPI_CAP_DESC_CODE_NONE: 1844 return (SDGP_RESULT_OFFLINE); 1845 } 1846 1847 dp->disksize = blocks = _4btol(data.desc.nblks); 1848 if (blocks == 0) 1849 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1850 1851 blksize = _3btol(data.desc.blklen); 1852 1853 } else if (!sd_validate_blksize(NULL, blksize)) { 1854 struct sd_mode_sense_data scsipi_sense; 1855 int big, bsize; 1856 struct scsi_general_block_descriptor *bdesc; 1857 1858 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1859 error = sd_mode_sense(sd, 0, &scsipi_sense, 1860 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1861 if (!error) { 1862 if (big) { 1863 bdesc = (void *)(&scsipi_sense.header.big + 1); 1864 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1865 } else { 1866 bdesc = (void *)(&scsipi_sense.header.small + 1); 1867 bsize = scsipi_sense.header.small.blk_desc_len; 1868 } 1869 1870 #if 0 1871 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1872 printf("page 0 bsize=%d\n", bsize); 1873 printf("page 0 ok\n"); 1874 #endif 1875 1876 if (bsize >= 8) { 1877 blksize = _3btol(bdesc->blklen); 1878 } 1879 } 1880 } 1881 1882 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1883 blksize = SD_DEFAULT_BLKSIZE; 1884 1885 dp->blksize = blksize; 1886 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1887 return (0); 1888 } 1889 1890 static int 1891 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1892 { 1893 struct sd_mode_sense_data scsipi_sense; 1894 int error; 1895 int big, byte2; 1896 size_t poffset; 1897 union scsi_disk_pages *pages; 1898 1899 byte2 = SMS_DBD; 1900 again: 1901 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1902 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1903 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1904 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1905 flags | XS_CTL_SILENT, &big); 1906 if (error) { 1907 if (byte2 == SMS_DBD) { 1908 /* No result; try once more with DBD off */ 1909 byte2 = 0; 1910 goto again; 1911 } 1912 return (error); 1913 } 1914 1915 if (big) { 1916 poffset = sizeof scsipi_sense.header.big; 1917 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1918 } else { 1919 poffset = sizeof scsipi_sense.header.small; 1920 poffset += scsipi_sense.header.small.blk_desc_len; 1921 } 1922 1923 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1924 return ERESTART; 1925 1926 pages = (void *)((u_long)&scsipi_sense + poffset); 1927 #if 0 1928 { 1929 size_t i; 1930 u_int8_t *p; 1931 1932 printf("page 4 sense:"); 1933 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1934 i--, p++) 1935 printf(" %02x", *p); 1936 printf("\n"); 1937 printf("page 4 pg_code=%d sense=%p/%p\n", 1938 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1939 } 1940 #endif 1941 1942 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1943 return (ERESTART); 1944 1945 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1946 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1947 _3btol(pages->rigid_geometry.ncyl), 1948 pages->rigid_geometry.nheads, 1949 _2btol(pages->rigid_geometry.st_cyl_wp), 1950 _2btol(pages->rigid_geometry.st_cyl_rwc), 1951 _2btol(pages->rigid_geometry.land_zone))); 1952 1953 /* 1954 * KLUDGE!! (for zone recorded disks) 1955 * give a number of sectors so that sec * trks * cyls 1956 * is <= disk_size 1957 * can lead to wasted space! THINK ABOUT THIS ! 1958 */ 1959 dp->heads = pages->rigid_geometry.nheads; 1960 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1961 if (dp->heads == 0 || dp->cyls == 0) 1962 return (ERESTART); 1963 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1964 1965 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1966 if (dp->rot_rate == 0) 1967 dp->rot_rate = 3600; 1968 1969 #if 0 1970 printf("page 4 ok\n"); 1971 #endif 1972 return (0); 1973 } 1974 1975 static int 1976 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1977 { 1978 struct sd_mode_sense_data scsipi_sense; 1979 int error; 1980 int big, byte2; 1981 size_t poffset; 1982 union scsi_disk_pages *pages; 1983 1984 byte2 = SMS_DBD; 1985 again: 1986 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1987 error = sd_mode_sense(sd, 0, &scsipi_sense, 1988 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1989 sizeof(scsipi_sense.pages.flex_geometry), 5, 1990 flags | XS_CTL_SILENT, &big); 1991 if (error) { 1992 if (byte2 == SMS_DBD) { 1993 /* No result; try once more with DBD off */ 1994 byte2 = 0; 1995 goto again; 1996 } 1997 return (error); 1998 } 1999 2000 if (big) { 2001 poffset = sizeof scsipi_sense.header.big; 2002 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2003 } else { 2004 poffset = sizeof scsipi_sense.header.small; 2005 poffset += scsipi_sense.header.small.blk_desc_len; 2006 } 2007 2008 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2009 return ERESTART; 2010 2011 pages = (void *)((u_long)&scsipi_sense + poffset); 2012 #if 0 2013 { 2014 size_t i; 2015 u_int8_t *p; 2016 2017 printf("page 5 sense:"); 2018 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2019 i--, p++) 2020 printf(" %02x", *p); 2021 printf("\n"); 2022 printf("page 5 pg_code=%d sense=%p/%p\n", 2023 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2024 } 2025 #endif 2026 2027 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2028 return (ERESTART); 2029 2030 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2031 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2032 _3btol(pages->flex_geometry.ncyl), 2033 pages->flex_geometry.nheads, 2034 pages->flex_geometry.ph_sec_tr, 2035 _2btol(pages->flex_geometry.bytes_s))); 2036 2037 dp->heads = pages->flex_geometry.nheads; 2038 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2039 dp->sectors = pages->flex_geometry.ph_sec_tr; 2040 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2041 return (ERESTART); 2042 2043 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2044 if (dp->rot_rate == 0) 2045 dp->rot_rate = 3600; 2046 2047 #if 0 2048 printf("page 5 ok\n"); 2049 #endif 2050 return (0); 2051 } 2052 2053 static int 2054 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2055 { 2056 int error; 2057 2058 /* 2059 * If offline, the SDEV_MEDIA_LOADED flag will be 2060 * cleared by the caller if necessary. 2061 */ 2062 if (sd->type == T_SIMPLE_DIRECT) { 2063 error = sd_get_simplifiedparms(sd, dp, flags); 2064 if (!error) 2065 disk_blocksize(&sd->sc_dk, dp->blksize); 2066 return (error); 2067 } 2068 2069 error = sd_get_capacity(sd, dp, flags); 2070 if (error) 2071 return (error); 2072 2073 disk_blocksize(&sd->sc_dk, dp->blksize); 2074 2075 if (sd->type == T_OPTICAL) 2076 goto page0; 2077 2078 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2079 if (!sd_get_parms_page5(sd, dp, flags) || 2080 !sd_get_parms_page4(sd, dp, flags)) 2081 return (SDGP_RESULT_OK); 2082 } else { 2083 if (!sd_get_parms_page4(sd, dp, flags) || 2084 !sd_get_parms_page5(sd, dp, flags)) 2085 return (SDGP_RESULT_OK); 2086 } 2087 2088 page0: 2089 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 2090 /* Try calling driver's method for figuring out geometry. */ 2091 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2092 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2093 (sd->sc_periph, dp, dp->disksize)) { 2094 /* 2095 * Use adaptec standard fictitious geometry 2096 * this depends on which controller (e.g. 1542C is 2097 * different. but we have to put SOMETHING here..) 2098 */ 2099 dp->heads = 64; 2100 dp->sectors = 32; 2101 dp->cyls = dp->disksize / (64 * 32); 2102 } 2103 dp->rot_rate = 3600; 2104 return (SDGP_RESULT_OK); 2105 } 2106 2107 static int 2108 sd_flush(struct sd_softc *sd, int flags) 2109 { 2110 struct scsipi_periph *periph = sd->sc_periph; 2111 struct scsi_synchronize_cache_10 cmd; 2112 2113 /* 2114 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2115 * We issue with address 0 length 0, which should be 2116 * interpreted by the device as "all remaining blocks 2117 * starting at address 0". We ignore ILLEGAL REQUEST 2118 * in the event that the command is not supported by 2119 * the device, and poll for completion so that we know 2120 * that the cache has actually been flushed. 2121 * 2122 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2123 * command, as indicated by our quirks flags. 2124 * 2125 * XXX What about older devices? 2126 */ 2127 if (periph->periph_version < 2 || 2128 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2129 return (0); 2130 2131 sd->flags |= SDF_FLUSHING; 2132 memset(&cmd, 0, sizeof(cmd)); 2133 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2134 2135 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2136 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2137 } 2138 2139 static int 2140 sd_getcache(struct sd_softc *sd, int *bitsp) 2141 { 2142 struct scsipi_periph *periph = sd->sc_periph; 2143 struct sd_mode_sense_data scsipi_sense; 2144 int error, bits = 0; 2145 int big; 2146 union scsi_disk_pages *pages; 2147 2148 if (periph->periph_version < 2) 2149 return (EOPNOTSUPP); 2150 2151 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2152 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2153 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2154 if (error) 2155 return (error); 2156 2157 if (big) 2158 pages = (void *)(&scsipi_sense.header.big + 1); 2159 else 2160 pages = (void *)(&scsipi_sense.header.small + 1); 2161 2162 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2163 bits |= DKCACHE_READ; 2164 if (pages->caching_params.flags & CACHING_WCE) 2165 bits |= DKCACHE_WRITE; 2166 if (pages->caching_params.pg_code & PGCODE_PS) 2167 bits |= DKCACHE_SAVE; 2168 2169 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2170 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2171 sizeof(scsipi_sense.pages.caching_params), 2172 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2173 if (error == 0) { 2174 if (big) 2175 pages = (void *)(&scsipi_sense.header.big + 1); 2176 else 2177 pages = (void *)(&scsipi_sense.header.small + 1); 2178 2179 if (pages->caching_params.flags & CACHING_RCD) 2180 bits |= DKCACHE_RCHANGE; 2181 if (pages->caching_params.flags & CACHING_WCE) 2182 bits |= DKCACHE_WCHANGE; 2183 } 2184 2185 *bitsp = bits; 2186 2187 return (0); 2188 } 2189 2190 static int 2191 sd_setcache(struct sd_softc *sd, int bits) 2192 { 2193 struct scsipi_periph *periph = sd->sc_periph; 2194 struct sd_mode_sense_data scsipi_sense; 2195 int error; 2196 uint8_t oflags, byte2 = 0; 2197 int big; 2198 union scsi_disk_pages *pages; 2199 2200 if (periph->periph_version < 2) 2201 return (EOPNOTSUPP); 2202 2203 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2204 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2205 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2206 if (error) 2207 return (error); 2208 2209 if (big) 2210 pages = (void *)(&scsipi_sense.header.big + 1); 2211 else 2212 pages = (void *)(&scsipi_sense.header.small + 1); 2213 2214 oflags = pages->caching_params.flags; 2215 2216 if (bits & DKCACHE_READ) 2217 pages->caching_params.flags &= ~CACHING_RCD; 2218 else 2219 pages->caching_params.flags |= CACHING_RCD; 2220 2221 if (bits & DKCACHE_WRITE) 2222 pages->caching_params.flags |= CACHING_WCE; 2223 else 2224 pages->caching_params.flags &= ~CACHING_WCE; 2225 2226 if (oflags == pages->caching_params.flags) 2227 return (0); 2228 2229 pages->caching_params.pg_code &= PGCODE_MASK; 2230 2231 if (bits & DKCACHE_SAVE) 2232 byte2 |= SMS_SP; 2233 2234 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2235 sizeof(struct scsi_mode_page_header) + 2236 pages->caching_params.pg_length, 0, big)); 2237 } 2238 2239 static void 2240 sd_set_properties(struct sd_softc *sd) 2241 { 2242 prop_dictionary_t disk_info, odisk_info, geom; 2243 2244 disk_info = prop_dictionary_create(); 2245 2246 geom = prop_dictionary_create(); 2247 2248 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2249 sd->params.disksize); 2250 2251 prop_dictionary_set_uint32(geom, "sector-size", 2252 sd->params.blksize); 2253 2254 prop_dictionary_set_uint16(geom, "sectors-per-track", 2255 sd->params.sectors); 2256 2257 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2258 sd->params.heads); 2259 2260 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2261 sd->params.cyls); 2262 2263 prop_dictionary_set(disk_info, "geometry", geom); 2264 prop_object_release(geom); 2265 2266 prop_dictionary_set(device_properties(&sd->sc_dev), 2267 "disk-info", disk_info); 2268 2269 /* 2270 * Don't release disk_info here; we keep a reference to it. 2271 * disk_detach() will release it when we go away. 2272 */ 2273 2274 odisk_info = sd->sc_dk.dk_info; 2275 sd->sc_dk.dk_info = disk_info; 2276 if (odisk_info) 2277 prop_object_release(odisk_info); 2278 }
Cache object: 1c611cea14dfb0734005ca28cd2c4574
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