sd.c revision 1.227
1 /* $NetBSD: sd.c,v 1.227 2004/09/25 04:11:23 thorpej 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 (at) 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 (at) dialix.oz.au) Sept 1992 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.227 2004/09/25 04:11:23 thorpej 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/uio.h> 71 #include <sys/malloc.h> 72 #include <sys/errno.h> 73 #include <sys/device.h> 74 #include <sys/disklabel.h> 75 #include <sys/disk.h> 76 #include <sys/proc.h> 77 #include <sys/conf.h> 78 #include <sys/vnode.h> 79 #if NRND > 0 80 #include <sys/rnd.h> 81 #endif 82 83 #include <dev/scsipi/scsipi_all.h> 84 #include <dev/scsipi/scsi_all.h> 85 #include <dev/scsipi/scsipi_disk.h> 86 #include <dev/scsipi/scsi_disk.h> 87 #include <dev/scsipi/scsiconf.h> 88 #include <dev/scsipi/scsipi_base.h> 89 #include <dev/scsipi/sdvar.h> 90 91 #define SDUNIT(dev) DISKUNIT(dev) 92 #define SDPART(dev) DISKPART(dev) 93 #define SDMINOR(unit, part) DISKMINOR(unit, part) 94 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 95 96 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 97 98 static void sdminphys(struct buf *); 99 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 100 static void sdgetdisklabel(struct sd_softc *); 101 static void sdstart(struct scsipi_periph *); 102 static void sdrestart(void *); 103 static void sddone(struct scsipi_xfer *, int); 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_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 112 int); 113 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 114 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 115 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 116 int); 117 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 118 int); 119 120 static int sd_flush(struct sd_softc *, int); 121 static int sd_getcache(struct sd_softc *, int *); 122 static int sd_setcache(struct sd_softc *, int); 123 124 static int sdmatch(struct device *, struct cfdata *, void *); 125 static void sdattach(struct device *, struct device *, void *); 126 static int sdactivate(struct device *, enum devact); 127 static int sddetach(struct device *, int); 128 129 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 130 sdactivate); 131 132 extern struct cfdriver sd_cd; 133 134 static const struct scsipi_inquiry_pattern sd_patterns[] = { 135 {T_DIRECT, T_FIXED, 136 "", "", ""}, 137 {T_DIRECT, T_REMOV, 138 "", "", ""}, 139 {T_OPTICAL, T_FIXED, 140 "", "", ""}, 141 {T_OPTICAL, T_REMOV, 142 "", "", ""}, 143 {T_SIMPLE_DIRECT, T_FIXED, 144 "", "", ""}, 145 {T_SIMPLE_DIRECT, T_REMOV, 146 "", "", ""}, 147 }; 148 149 static dev_type_open(sdopen); 150 static dev_type_close(sdclose); 151 static dev_type_read(sdread); 152 static dev_type_write(sdwrite); 153 static dev_type_ioctl(sdioctl); 154 static dev_type_strategy(sdstrategy); 155 static dev_type_dump(sddump); 156 static dev_type_size(sdsize); 157 158 const struct bdevsw sd_bdevsw = { 159 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 160 }; 161 162 const struct cdevsw sd_cdevsw = { 163 sdopen, sdclose, sdread, sdwrite, sdioctl, 164 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 165 }; 166 167 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 168 169 static const struct scsipi_periphsw sd_switch = { 170 sd_interpret_sense, /* check our error handler first */ 171 sdstart, /* have a queue, served by this */ 172 NULL, /* have no async handler */ 173 sddone, /* deal with stats at interrupt time */ 174 }; 175 176 struct sd_mode_sense_data { 177 /* 178 * XXX 179 * We are not going to parse this as-is -- it just has to be large 180 * enough. 181 */ 182 union { 183 struct scsipi_mode_header small; 184 struct scsipi_mode_header_big big; 185 } header; 186 struct scsi_blk_desc blk_desc; 187 union scsi_disk_pages pages; 188 }; 189 190 /* 191 * The routine called by the low level scsi routine when it discovers 192 * A device suitable for this driver 193 */ 194 static int 195 sdmatch(struct device *parent, struct cfdata *match, void *aux) 196 { 197 struct scsipibus_attach_args *sa = aux; 198 int priority; 199 200 (void)scsipi_inqmatch(&sa->sa_inqbuf, 201 (caddr_t)sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 202 sizeof(sd_patterns[0]), &priority); 203 204 return (priority); 205 } 206 207 /* 208 * Attach routine common to atapi & scsi. 209 */ 210 static void 211 sdattach(struct device *parent, struct device *self, void *aux) 212 { 213 struct sd_softc *sd = (void *)self; 214 struct scsipibus_attach_args *sa = aux; 215 struct scsipi_periph *periph = sa->sa_periph; 216 int error, result; 217 struct disk_parms *dp = &sd->params; 218 char pbuf[9]; 219 220 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 221 222 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 223 if (sd->type == T_SIMPLE_DIRECT) 224 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 225 226 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 227 periph->periph_version == 0) 228 sd->flags |= SDF_ANCIENT; 229 230 bufq_alloc(&sd->buf_queue, 231 BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 232 233 callout_init(&sd->sc_callout); 234 235 /* 236 * Store information needed to contact our base driver 237 */ 238 sd->sc_periph = periph; 239 240 periph->periph_dev = &sd->sc_dev; 241 periph->periph_switch = &sd_switch; 242 243 /* 244 * Increase our openings to the maximum-per-periph 245 * supported by the adapter. This will either be 246 * clamped down or grown by the adapter if necessary. 247 */ 248 periph->periph_openings = 249 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 250 periph->periph_flags |= PERIPH_GROW_OPENINGS; 251 252 /* 253 * Initialize and attach the disk structure. 254 */ 255 sd->sc_dk.dk_driver = &sddkdriver; 256 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 257 disk_attach(&sd->sc_dk); 258 259 /* 260 * Use the subdriver to request information regarding the drive. 261 */ 262 aprint_naive("\n"); 263 aprint_normal("\n"); 264 265 error = scsipi_test_unit_ready(periph, 266 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 267 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 268 269 if (error) 270 result = SDGP_RESULT_OFFLINE; 271 else 272 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 273 aprint_normal("%s: ", sd->sc_dev.dv_xname); 274 switch (result) { 275 case SDGP_RESULT_OK: 276 format_bytes(pbuf, sizeof(pbuf), 277 (u_int64_t)dp->disksize * dp->blksize); 278 aprint_normal( 279 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 280 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 281 (unsigned long long)dp->disksize); 282 break; 283 284 case SDGP_RESULT_OFFLINE: 285 aprint_normal("drive offline"); 286 break; 287 288 case SDGP_RESULT_UNFORMATTED: 289 aprint_normal("unformatted media"); 290 break; 291 292 #ifdef DIAGNOSTIC 293 default: 294 panic("sdattach: unknown result from get_parms"); 295 break; 296 #endif 297 } 298 aprint_normal("\n"); 299 300 /* 301 * Establish a shutdown hook so that we can ensure that 302 * our data has actually made it onto the platter at 303 * shutdown time. Note that this relies on the fact 304 * that the shutdown hook code puts us at the head of 305 * the list (thus guaranteeing that our hook runs before 306 * our ancestors'). 307 */ 308 if ((sd->sc_sdhook = 309 shutdownhook_establish(sd_shutdown, sd)) == NULL) 310 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 311 sd->sc_dev.dv_xname); 312 313 #if NRND > 0 314 /* 315 * attach the device into the random source list 316 */ 317 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 318 RND_TYPE_DISK, 0); 319 #endif 320 321 /* Discover wedges on this disk. */ 322 dkwedge_discover(&sd->sc_dk); 323 } 324 325 static int 326 sdactivate(struct device *self, enum devact act) 327 { 328 int rv = 0; 329 330 switch (act) { 331 case DVACT_ACTIVATE: 332 rv = EOPNOTSUPP; 333 break; 334 335 case DVACT_DEACTIVATE: 336 /* 337 * Nothing to do; we key off the device's DVF_ACTIVE. 338 */ 339 break; 340 } 341 return (rv); 342 } 343 344 static int 345 sddetach(struct device *self, int flags) 346 { 347 struct sd_softc *sd = (struct sd_softc *) self; 348 struct buf *bp; 349 int s, bmaj, cmaj, i, mn; 350 351 /* locate the major number */ 352 bmaj = bdevsw_lookup_major(&sd_bdevsw); 353 cmaj = cdevsw_lookup_major(&sd_cdevsw); 354 355 /* Nuke the vnodes for any open instances */ 356 for (i = 0; i < MAXPARTITIONS; i++) { 357 mn = SDMINOR(self->dv_unit, i); 358 vdevgone(bmaj, mn, mn, VBLK); 359 vdevgone(cmaj, mn, mn, VCHR); 360 } 361 362 /* kill any pending restart */ 363 callout_stop(&sd->sc_callout); 364 365 /* Delete all of our wedges. */ 366 dkwedge_delall(&sd->sc_dk); 367 368 s = splbio(); 369 370 /* Kill off any queued buffers. */ 371 while ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 372 bp->b_error = EIO; 373 bp->b_flags |= B_ERROR; 374 bp->b_resid = bp->b_bcount; 375 biodone(bp); 376 } 377 378 bufq_free(&sd->buf_queue); 379 380 /* Kill off any pending commands. */ 381 scsipi_kill_pending(sd->sc_periph); 382 383 splx(s); 384 385 /* Detach from the disk list. */ 386 disk_detach(&sd->sc_dk); 387 388 /* Get rid of the shutdown hook. */ 389 shutdownhook_disestablish(sd->sc_sdhook); 390 391 #if NRND > 0 392 /* Unhook the entropy source. */ 393 rnd_detach_source(&sd->rnd_source); 394 #endif 395 396 return (0); 397 } 398 399 /* 400 * open the device. Make sure the partition info is a up-to-date as can be. 401 */ 402 static int 403 sdopen(dev_t dev, int flag, int fmt, struct proc *p) 404 { 405 struct sd_softc *sd; 406 struct scsipi_periph *periph; 407 struct scsipi_adapter *adapt; 408 int unit, part; 409 int error; 410 411 unit = SDUNIT(dev); 412 if (unit >= sd_cd.cd_ndevs) 413 return (ENXIO); 414 sd = sd_cd.cd_devs[unit]; 415 if (sd == NULL) 416 return (ENXIO); 417 418 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 419 return (ENODEV); 420 421 part = SDPART(dev); 422 423 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 424 return (error); 425 426 /* 427 * If there are wedges, and this is not RAW_PART, then we 428 * need to fail. 429 */ 430 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 431 error = EBUSY; 432 goto bad1; 433 } 434 435 periph = sd->sc_periph; 436 adapt = periph->periph_channel->chan_adapter; 437 438 SC_DEBUG(periph, SCSIPI_DB1, 439 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 440 sd_cd.cd_ndevs, part)); 441 442 /* 443 * If this is the first open of this device, add a reference 444 * to the adapter. 445 */ 446 if (sd->sc_dk.dk_openmask == 0 && 447 (error = scsipi_adapter_addref(adapt)) != 0) 448 goto bad1; 449 450 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 451 /* 452 * If any partition is open, but the disk has been invalidated, 453 * disallow further opens of non-raw partition 454 */ 455 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 456 (part != RAW_PART || fmt != S_IFCHR)) { 457 error = EIO; 458 goto bad2; 459 } 460 } else { 461 int silent; 462 463 if (part == RAW_PART && fmt == S_IFCHR) 464 silent = XS_CTL_SILENT; 465 else 466 silent = 0; 467 468 /* Check that it is still responding and ok. */ 469 error = scsipi_test_unit_ready(periph, 470 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 471 silent); 472 473 /* 474 * Start the pack spinning if necessary. Always allow the 475 * raw parition to be opened, for raw IOCTLs. Data transfers 476 * will check for SDEV_MEDIA_LOADED. 477 */ 478 if (error == EIO) { 479 int error2; 480 481 error2 = scsipi_start(periph, SSS_START, silent); 482 switch (error2) { 483 case 0: 484 error = 0; 485 break; 486 case EIO: 487 case EINVAL: 488 break; 489 default: 490 error = error2; 491 break; 492 } 493 } 494 if (error) { 495 if (silent) 496 goto out; 497 goto bad2; 498 } 499 500 periph->periph_flags |= PERIPH_OPEN; 501 502 if (periph->periph_flags & PERIPH_REMOVABLE) { 503 /* Lock the pack in. */ 504 error = scsipi_prevent(periph, PR_PREVENT, 505 XS_CTL_IGNORE_ILLEGAL_REQUEST | 506 XS_CTL_IGNORE_MEDIA_CHANGE); 507 if (error) 508 goto bad3; 509 } 510 511 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 512 int param_error; 513 periph->periph_flags |= PERIPH_MEDIA_LOADED; 514 515 /* 516 * Load the physical device parameters. 517 * 518 * Note that if media is present but unformatted, 519 * we allow the open (so that it can be formatted!). 520 * The drive should refuse real I/O, if the media is 521 * unformatted. 522 */ 523 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 524 == SDGP_RESULT_OFFLINE) { 525 error = ENXIO; 526 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 527 goto bad3; 528 } 529 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 530 531 /* Load the partition info if not already loaded. */ 532 if (param_error == 0) { 533 sdgetdisklabel(sd); 534 SC_DEBUG(periph, SCSIPI_DB3, 535 ("Disklabel loaded ")); 536 } 537 } 538 } 539 540 /* Check that the partition exists. */ 541 if (part != RAW_PART && 542 (part >= sd->sc_dk.dk_label->d_npartitions || 543 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 544 error = ENXIO; 545 goto bad3; 546 } 547 548 out: /* Insure only one open at a time. */ 549 switch (fmt) { 550 case S_IFCHR: 551 sd->sc_dk.dk_copenmask |= (1 << part); 552 break; 553 case S_IFBLK: 554 sd->sc_dk.dk_bopenmask |= (1 << part); 555 break; 556 } 557 sd->sc_dk.dk_openmask = 558 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 559 560 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 561 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 562 return (0); 563 564 bad3: 565 if (sd->sc_dk.dk_openmask == 0) { 566 if (periph->periph_flags & PERIPH_REMOVABLE) 567 scsipi_prevent(periph, PR_ALLOW, 568 XS_CTL_IGNORE_ILLEGAL_REQUEST | 569 XS_CTL_IGNORE_MEDIA_CHANGE); 570 periph->periph_flags &= ~PERIPH_OPEN; 571 } 572 573 bad2: 574 if (sd->sc_dk.dk_openmask == 0) 575 scsipi_adapter_delref(adapt); 576 577 bad1: 578 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 579 return (error); 580 } 581 582 /* 583 * close the device.. only called if we are the LAST occurence of an open 584 * device. Convenient now but usually a pain. 585 */ 586 static int 587 sdclose(dev_t dev, int flag, int fmt, struct proc *p) 588 { 589 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 590 struct scsipi_periph *periph = sd->sc_periph; 591 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 592 int part = SDPART(dev); 593 int error; 594 595 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 596 return (error); 597 598 switch (fmt) { 599 case S_IFCHR: 600 sd->sc_dk.dk_copenmask &= ~(1 << part); 601 break; 602 case S_IFBLK: 603 sd->sc_dk.dk_bopenmask &= ~(1 << part); 604 break; 605 } 606 sd->sc_dk.dk_openmask = 607 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 608 609 if (sd->sc_dk.dk_openmask == 0) { 610 /* 611 * If the disk cache needs flushing, and the disk supports 612 * it, do it now. 613 */ 614 if ((sd->flags & SDF_DIRTY) != 0) { 615 if (sd_flush(sd, 0)) { 616 printf("%s: cache synchronization failed\n", 617 sd->sc_dev.dv_xname); 618 sd->flags &= ~SDF_FLUSHING; 619 } else 620 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 621 } 622 623 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 624 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 625 626 scsipi_wait_drain(periph); 627 628 if (periph->periph_flags & PERIPH_REMOVABLE) 629 scsipi_prevent(periph, PR_ALLOW, 630 XS_CTL_IGNORE_ILLEGAL_REQUEST | 631 XS_CTL_IGNORE_NOT_READY); 632 periph->periph_flags &= ~PERIPH_OPEN; 633 634 scsipi_wait_drain(periph); 635 636 scsipi_adapter_delref(adapt); 637 } 638 639 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 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 boolean_t sector_aligned; 657 658 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 659 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 660 ("%ld 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 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 666 if (periph->periph_flags & PERIPH_OPEN) 667 bp->b_error = EIO; 668 else 669 bp->b_error = ENODEV; 670 goto bad; 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 bad; 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 bad: 744 bp->b_flags |= B_ERROR; 745 done: 746 /* 747 * Correctly set the buf to indicate a completed xfer 748 */ 749 bp->b_resid = bp->b_bcount; 750 biodone(bp); 751 } 752 753 /* 754 * sdstart looks to see if there is a buf waiting for the device 755 * and that the device is not already busy. If both are true, 756 * It dequeues the buf and creates a scsi command to perform the 757 * transfer in the buf. The transfer request will call scsipi_done 758 * on completion, which will in turn call this routine again 759 * so that the next queued transfer is performed. 760 * The bufs are queued by the strategy routine (sdstrategy) 761 * 762 * This routine is also called after other non-queued requests 763 * have been made of the scsi driver, to ensure that the queue 764 * continues to be drained. 765 * 766 * must be called at the correct (highish) spl level 767 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 768 */ 769 static void 770 sdstart(struct scsipi_periph *periph) 771 { 772 struct sd_softc *sd = (void *)periph->periph_dev; 773 struct disklabel *lp = sd->sc_dk.dk_label; 774 struct buf *bp = 0; 775 struct scsipi_rw_big cmd_big; 776 struct scsi_rw cmd_small; 777 struct scsipi_generic *cmdp; 778 struct scsipi_xfer *xs; 779 int nblks, cmdlen, error, flags; 780 781 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 782 /* 783 * Check if the device has room for another command 784 */ 785 while (periph->periph_active < periph->periph_openings) { 786 /* 787 * there is excess capacity, but a special waits 788 * It'll need the adapter as soon as we clear out of the 789 * way and let it run (user level wait). 790 */ 791 if (periph->periph_flags & PERIPH_WAITING) { 792 periph->periph_flags &= ~PERIPH_WAITING; 793 wakeup((caddr_t)periph); 794 return; 795 } 796 797 /* 798 * If the device has become invalid, abort all the 799 * reads and writes until all files have been closed and 800 * re-opened 801 */ 802 if (__predict_false( 803 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 804 if ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 805 bp->b_error = EIO; 806 bp->b_flags |= B_ERROR; 807 bp->b_resid = bp->b_bcount; 808 biodone(bp); 809 continue; 810 } else { 811 return; 812 } 813 } 814 815 /* 816 * See if there is a buf with work for us to do.. 817 */ 818 if ((bp = BUFQ_PEEK(&sd->buf_queue)) == NULL) 819 return; 820 821 /* 822 * We have a buf, now we should make a command. 823 */ 824 825 if (lp->d_secsize == DEV_BSIZE) 826 nblks = bp->b_bcount >> DEV_BSHIFT; 827 else 828 nblks = howmany(bp->b_bcount, lp->d_secsize); 829 830 /* 831 * Fill out the scsi command. If the transfer will 832 * fit in a "small" cdb, use it. 833 */ 834 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 835 ((nblks & 0xff) == nblks) && 836 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 837 /* 838 * We can fit in a small cdb. 839 */ 840 memset(&cmd_small, 0, sizeof(cmd_small)); 841 cmd_small.opcode = (bp->b_flags & B_READ) ? 842 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 843 _lto3b(bp->b_rawblkno, cmd_small.addr); 844 cmd_small.length = nblks & 0xff; 845 cmdlen = sizeof(cmd_small); 846 cmdp = (struct scsipi_generic *)&cmd_small; 847 } else { 848 /* 849 * Need a large cdb. 850 */ 851 memset(&cmd_big, 0, sizeof(cmd_big)); 852 cmd_big.opcode = (bp->b_flags & B_READ) ? 853 READ_BIG : WRITE_BIG; 854 _lto4b(bp->b_rawblkno, cmd_big.addr); 855 _lto2b(nblks, cmd_big.length); 856 cmdlen = sizeof(cmd_big); 857 cmdp = (struct scsipi_generic *)&cmd_big; 858 } 859 860 /* Instrumentation. */ 861 disk_busy(&sd->sc_dk); 862 863 /* 864 * Mark the disk dirty so that the cache will be 865 * flushed on close. 866 */ 867 if ((bp->b_flags & B_READ) == 0) 868 sd->flags |= SDF_DIRTY; 869 870 /* 871 * Figure out what flags to use. 872 */ 873 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 874 if (bp->b_flags & B_READ) 875 flags |= XS_CTL_DATA_IN; 876 else 877 flags |= XS_CTL_DATA_OUT; 878 879 /* 880 * Call the routine that chats with the adapter. 881 * Note: we cannot sleep as we may be an interrupt 882 */ 883 xs = scsipi_make_xs(periph, cmdp, cmdlen, 884 (u_char *)bp->b_data, bp->b_bcount, 885 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 886 if (__predict_false(xs == NULL)) { 887 /* 888 * out of memory. Keep this buffer in the queue, and 889 * retry later. 890 */ 891 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 892 periph); 893 return; 894 } 895 /* 896 * need to dequeue the buffer before queuing the command, 897 * because cdstart may be called recursively from the 898 * HBA driver 899 */ 900 #ifdef DIAGNOSTIC 901 if (BUFQ_GET(&sd->buf_queue) != bp) 902 panic("sdstart(): dequeued wrong buf"); 903 #else 904 BUFQ_GET(&sd->buf_queue); 905 #endif 906 error = scsipi_execute_xs(xs); 907 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 908 KASSERT(error == 0); 909 } 910 } 911 912 static void 913 sdrestart(void *v) 914 { 915 int s = splbio(); 916 sdstart((struct scsipi_periph *)v); 917 splx(s); 918 } 919 920 static void 921 sddone(struct scsipi_xfer *xs, int error) 922 { 923 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 924 struct buf *bp = xs->bp; 925 926 if (sd->flags & SDF_FLUSHING) { 927 /* Flush completed, no longer dirty. */ 928 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 929 } 930 931 if (bp) { 932 bp->b_error = error; 933 bp->b_resid = xs->resid; 934 if (error) 935 bp->b_flags |= B_ERROR; 936 937 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 938 (bp->b_flags & B_READ)); 939 #if NRND > 0 940 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 941 #endif 942 943 biodone(bp); 944 } 945 } 946 947 static void 948 sdminphys(struct buf *bp) 949 { 950 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 951 long max; 952 953 /* 954 * If the device is ancient, we want to make sure that 955 * the transfer fits into a 6-byte cdb. 956 * 957 * XXX Note that the SCSI-I spec says that 256-block transfers 958 * are allowed in a 6-byte read/write, and are specified 959 * by settng the "length" to 0. However, we're conservative 960 * here, allowing only 255-block transfers in case an 961 * ancient device gets confused by length == 0. A length of 0 962 * in a 10-byte read/write actually means 0 blocks. 963 */ 964 if ((sd->flags & SDF_ANCIENT) && 965 ((sd->sc_periph->periph_flags & 966 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 967 max = sd->sc_dk.dk_label->d_secsize * 0xff; 968 969 if (bp->b_bcount > max) 970 bp->b_bcount = max; 971 } 972 973 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 974 } 975 976 static int 977 sdread(dev_t dev, struct uio *uio, int ioflag) 978 { 979 980 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 981 } 982 983 static int 984 sdwrite(dev_t dev, struct uio *uio, int ioflag) 985 { 986 987 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 988 } 989 990 /* 991 * Perform special action on behalf of the user 992 * Knows about the internals of this device 993 */ 994 static int 995 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 996 { 997 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 998 struct scsipi_periph *periph = sd->sc_periph; 999 int part = SDPART(dev); 1000 int error = 0; 1001 #ifdef __HAVE_OLD_DISKLABEL 1002 struct disklabel *newlabel = NULL; 1003 #endif 1004 1005 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1006 1007 /* 1008 * If the device is not valid, some IOCTLs can still be 1009 * handled on the raw partition. Check this here. 1010 */ 1011 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1012 switch (cmd) { 1013 case DIOCKLABEL: 1014 case DIOCWLABEL: 1015 case DIOCLOCK: 1016 case DIOCEJECT: 1017 case ODIOCEJECT: 1018 case DIOCGCACHE: 1019 case DIOCSCACHE: 1020 case SCIOCIDENTIFY: 1021 case OSCIOCIDENTIFY: 1022 case SCIOCCOMMAND: 1023 case SCIOCDEBUG: 1024 if (part == RAW_PART) 1025 break; 1026 /* FALLTHROUGH */ 1027 default: 1028 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1029 return (ENODEV); 1030 else 1031 return (EIO); 1032 } 1033 } 1034 1035 switch (cmd) { 1036 case DIOCGDINFO: 1037 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1038 return (0); 1039 1040 #ifdef __HAVE_OLD_DISKLABEL 1041 case ODIOCGDINFO: 1042 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1043 if (newlabel == NULL) 1044 return EIO; 1045 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1046 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1047 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1048 else 1049 error = ENOTTY; 1050 free(newlabel, M_TEMP); 1051 return error; 1052 #endif 1053 1054 case DIOCGPART: 1055 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1056 ((struct partinfo *)addr)->part = 1057 &sd->sc_dk.dk_label->d_partitions[part]; 1058 return (0); 1059 1060 case DIOCWDINFO: 1061 case DIOCSDINFO: 1062 #ifdef __HAVE_OLD_DISKLABEL 1063 case ODIOCWDINFO: 1064 case ODIOCSDINFO: 1065 #endif 1066 { 1067 struct disklabel *lp; 1068 1069 if ((flag & FWRITE) == 0) 1070 return (EBADF); 1071 1072 #ifdef __HAVE_OLD_DISKLABEL 1073 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1074 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1075 if (newlabel == NULL) 1076 return EIO; 1077 memset(newlabel, 0, sizeof newlabel); 1078 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1079 lp = newlabel; 1080 } else 1081 #endif 1082 lp = (struct disklabel *)addr; 1083 1084 if ((error = lockmgr(&sd->sc_dk.dk_openlock, 1085 LK_EXCLUSIVE, NULL)) != 0) 1086 goto bad; 1087 sd->flags |= SDF_LABELLING; 1088 1089 error = setdisklabel(sd->sc_dk.dk_label, 1090 lp, /*sd->sc_dk.dk_openmask : */0, 1091 sd->sc_dk.dk_cpulabel); 1092 if (error == 0) { 1093 if (cmd == DIOCWDINFO 1094 #ifdef __HAVE_OLD_DISKLABEL 1095 || cmd == ODIOCWDINFO 1096 #endif 1097 ) 1098 error = writedisklabel(SDLABELDEV(dev), 1099 sdstrategy, sd->sc_dk.dk_label, 1100 sd->sc_dk.dk_cpulabel); 1101 } 1102 1103 sd->flags &= ~SDF_LABELLING; 1104 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1105 bad: 1106 #ifdef __HAVE_OLD_DISKLABEL 1107 if (newlabel != NULL) 1108 free(newlabel, M_TEMP); 1109 #endif 1110 return (error); 1111 } 1112 1113 case DIOCKLABEL: 1114 if (*(int *)addr) 1115 periph->periph_flags |= PERIPH_KEEP_LABEL; 1116 else 1117 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1118 return (0); 1119 1120 case DIOCWLABEL: 1121 if ((flag & FWRITE) == 0) 1122 return (EBADF); 1123 if (*(int *)addr) 1124 sd->flags |= SDF_WLABEL; 1125 else 1126 sd->flags &= ~SDF_WLABEL; 1127 return (0); 1128 1129 case DIOCLOCK: 1130 return (scsipi_prevent(periph, 1131 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1132 1133 case DIOCEJECT: 1134 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1135 return (ENOTTY); 1136 if (*(int *)addr == 0) { 1137 /* 1138 * Don't force eject: check that we are the only 1139 * partition open. If so, unlock it. 1140 */ 1141 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1142 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1143 sd->sc_dk.dk_openmask) { 1144 error = scsipi_prevent(periph, PR_ALLOW, 1145 XS_CTL_IGNORE_NOT_READY); 1146 if (error) 1147 return (error); 1148 } else { 1149 return (EBUSY); 1150 } 1151 } 1152 /* FALLTHROUGH */ 1153 case ODIOCEJECT: 1154 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1155 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1156 1157 case DIOCGDEFLABEL: 1158 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1159 return (0); 1160 1161 #ifdef __HAVE_OLD_DISKLABEL 1162 case ODIOCGDEFLABEL: 1163 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1164 if (newlabel == NULL) 1165 return EIO; 1166 sdgetdefaultlabel(sd, newlabel); 1167 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1168 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1169 else 1170 error = ENOTTY; 1171 free(newlabel, M_TEMP); 1172 return error; 1173 #endif 1174 1175 case DIOCGCACHE: 1176 return (sd_getcache(sd, (int *) addr)); 1177 1178 case DIOCSCACHE: 1179 if ((flag & FWRITE) == 0) 1180 return (EBADF); 1181 return (sd_setcache(sd, *(int *) addr)); 1182 1183 case DIOCCACHESYNC: 1184 /* 1185 * XXX Do we really need to care about having a writable 1186 * file descriptor here? 1187 */ 1188 if ((flag & FWRITE) == 0) 1189 return (EBADF); 1190 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1191 error = sd_flush(sd, 0); 1192 if (error) 1193 sd->flags &= ~SDF_FLUSHING; 1194 else 1195 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1196 } else 1197 error = 0; 1198 return (error); 1199 1200 case DIOCAWEDGE: 1201 { 1202 struct dkwedge_info *dkw = (void *) addr; 1203 1204 if ((flag & FWRITE) == 0) 1205 return (EBADF); 1206 1207 /* If the ioctl happens here, the parent is us. */ 1208 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1209 return (dkwedge_add(dkw)); 1210 } 1211 1212 case DIOCDWEDGE: 1213 { 1214 struct dkwedge_info *dkw = (void *) addr; 1215 1216 if ((flag & FWRITE) == 0) 1217 return (EBADF); 1218 1219 /* If the ioctl happens here, the parent is us. */ 1220 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1221 return (dkwedge_del(dkw)); 1222 } 1223 1224 case DIOCLWEDGES: 1225 { 1226 struct dkwedge_list *dkwl = (void *) addr; 1227 1228 return (dkwedge_list(&sd->sc_dk, dkwl, p)); 1229 } 1230 1231 default: 1232 if (part != RAW_PART) 1233 return (ENOTTY); 1234 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1235 } 1236 1237 #ifdef DIAGNOSTIC 1238 panic("sdioctl: impossible"); 1239 #endif 1240 } 1241 1242 static void 1243 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1244 { 1245 1246 memset(lp, 0, sizeof(struct disklabel)); 1247 1248 lp->d_secsize = sd->params.blksize; 1249 lp->d_ntracks = sd->params.heads; 1250 lp->d_nsectors = sd->params.sectors; 1251 lp->d_ncylinders = sd->params.cyls; 1252 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1253 1254 switch (scsipi_periph_bustype(sd->sc_periph)) { 1255 case SCSIPI_BUSTYPE_SCSI: 1256 lp->d_type = DTYPE_SCSI; 1257 break; 1258 case SCSIPI_BUSTYPE_ATAPI: 1259 lp->d_type = DTYPE_ATAPI; 1260 break; 1261 } 1262 /* 1263 * XXX 1264 * We could probe the mode pages to figure out what kind of disc it is. 1265 * Is this worthwhile? 1266 */ 1267 strncpy(lp->d_typename, "mydisk", 16); 1268 strncpy(lp->d_packname, "fictitious", 16); 1269 lp->d_secperunit = sd->params.disksize; 1270 lp->d_rpm = sd->params.rot_rate; 1271 lp->d_interleave = 1; 1272 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1273 D_REMOVABLE : 0; 1274 1275 lp->d_partitions[RAW_PART].p_offset = 0; 1276 lp->d_partitions[RAW_PART].p_size = 1277 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1278 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1279 lp->d_npartitions = RAW_PART + 1; 1280 1281 lp->d_magic = DISKMAGIC; 1282 lp->d_magic2 = DISKMAGIC; 1283 lp->d_checksum = dkcksum(lp); 1284 } 1285 1286 1287 /* 1288 * Load the label information on the named device 1289 */ 1290 static void 1291 sdgetdisklabel(struct sd_softc *sd) 1292 { 1293 struct disklabel *lp = sd->sc_dk.dk_label; 1294 const char *errstring; 1295 1296 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1297 1298 sdgetdefaultlabel(sd, lp); 1299 1300 if (lp->d_secpercyl == 0) { 1301 lp->d_secpercyl = 100; 1302 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1303 } 1304 1305 /* 1306 * Call the generic disklabel extraction routine 1307 */ 1308 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1309 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1310 if (errstring) { 1311 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1312 return; 1313 } 1314 } 1315 1316 static void 1317 sd_shutdown(void *arg) 1318 { 1319 struct sd_softc *sd = arg; 1320 1321 /* 1322 * If the disk cache needs to be flushed, and the disk supports 1323 * it, flush it. We're cold at this point, so we poll for 1324 * completion. 1325 */ 1326 if ((sd->flags & SDF_DIRTY) != 0) { 1327 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1328 printf("%s: cache synchronization failed\n", 1329 sd->sc_dev.dv_xname); 1330 sd->flags &= ~SDF_FLUSHING; 1331 } else 1332 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1333 } 1334 } 1335 1336 /* 1337 * Check Errors 1338 */ 1339 static int 1340 sd_interpret_sense(struct scsipi_xfer *xs) 1341 { 1342 struct scsipi_periph *periph = xs->xs_periph; 1343 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1344 struct sd_softc *sd = (void *)periph->periph_dev; 1345 int s, error, retval = EJUSTRETURN; 1346 1347 /* 1348 * If the periph is already recovering, just do the normal 1349 * error processing. 1350 */ 1351 if (periph->periph_flags & PERIPH_RECOVERING) 1352 return (retval); 1353 1354 /* 1355 * If the device is not open yet, let the generic code handle it. 1356 */ 1357 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1358 return (retval); 1359 1360 /* 1361 * If it isn't a extended or extended/deferred error, let 1362 * the generic code handle it. 1363 */ 1364 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1365 (sense->error_code & SSD_ERRCODE) != 0x71) 1366 return (retval); 1367 1368 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1369 sense->add_sense_code == 0x4) { 1370 if (sense->add_sense_code_qual == 0x01) { 1371 /* 1372 * Unit In The Process Of Becoming Ready. 1373 */ 1374 printf("%s: waiting for pack to spin up...\n", 1375 sd->sc_dev.dv_xname); 1376 if (!callout_pending(&periph->periph_callout)) 1377 scsipi_periph_freeze(periph, 1); 1378 callout_reset(&periph->periph_callout, 1379 5 * hz, scsipi_periph_timed_thaw, periph); 1380 retval = ERESTART; 1381 } else if (sense->add_sense_code_qual == 0x02) { 1382 printf("%s: pack is stopped, restarting...\n", 1383 sd->sc_dev.dv_xname); 1384 s = splbio(); 1385 periph->periph_flags |= PERIPH_RECOVERING; 1386 splx(s); 1387 error = scsipi_start(periph, SSS_START, 1388 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1389 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1390 if (error) { 1391 printf("%s: unable to restart pack\n", 1392 sd->sc_dev.dv_xname); 1393 retval = error; 1394 } else 1395 retval = ERESTART; 1396 s = splbio(); 1397 periph->periph_flags &= ~PERIPH_RECOVERING; 1398 splx(s); 1399 } 1400 } 1401 if ((sense->flags & SSD_KEY) == SKEY_MEDIUM_ERROR && 1402 sense->add_sense_code == 0x31 && 1403 sense->add_sense_code_qual == 0x00) { /* maybe for any asq ? */ 1404 /* Medium Format Corrupted */ 1405 retval = EFTYPE; 1406 } 1407 return (retval); 1408 } 1409 1410 1411 static int 1412 sdsize(dev_t dev) 1413 { 1414 struct sd_softc *sd; 1415 int part, unit, omask; 1416 int size; 1417 1418 unit = SDUNIT(dev); 1419 if (unit >= sd_cd.cd_ndevs) 1420 return (-1); 1421 sd = sd_cd.cd_devs[unit]; 1422 if (sd == NULL) 1423 return (-1); 1424 1425 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1426 return (-1); 1427 1428 part = SDPART(dev); 1429 omask = sd->sc_dk.dk_openmask & (1 << part); 1430 1431 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1432 return (-1); 1433 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1434 size = -1; 1435 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1436 size = -1; 1437 else 1438 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1439 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1440 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1441 return (-1); 1442 return (size); 1443 } 1444 1445 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1446 static struct scsipi_xfer sx; 1447 static int sddoingadump; 1448 1449 /* 1450 * dump all of physical memory into the partition specified, starting 1451 * at offset 'dumplo' into the partition. 1452 */ 1453 static int 1454 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1455 { 1456 struct sd_softc *sd; /* disk unit to do the I/O */ 1457 struct disklabel *lp; /* disk's disklabel */ 1458 int unit, part; 1459 int sectorsize; /* size of a disk sector */ 1460 int nsects; /* number of sectors in partition */ 1461 int sectoff; /* sector offset of partition */ 1462 int totwrt; /* total number of sectors left to write */ 1463 int nwrt; /* current number of sectors to write */ 1464 struct scsipi_rw_big cmd; /* write command */ 1465 struct scsipi_xfer *xs; /* ... convenience */ 1466 struct scsipi_periph *periph; 1467 struct scsipi_channel *chan; 1468 1469 /* Check if recursive dump; if so, punt. */ 1470 if (sddoingadump) 1471 return (EFAULT); 1472 1473 /* Mark as active early. */ 1474 sddoingadump = 1; 1475 1476 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1477 part = SDPART(dev); 1478 1479 /* Check for acceptable drive number. */ 1480 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1481 return (ENXIO); 1482 1483 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1484 return (ENODEV); 1485 1486 periph = sd->sc_periph; 1487 chan = periph->periph_channel; 1488 1489 /* Make sure it was initialized. */ 1490 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1491 return (ENXIO); 1492 1493 /* Convert to disk sectors. Request must be a multiple of size. */ 1494 lp = sd->sc_dk.dk_label; 1495 sectorsize = lp->d_secsize; 1496 if ((size % sectorsize) != 0) 1497 return (EFAULT); 1498 totwrt = size / sectorsize; 1499 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1500 1501 nsects = lp->d_partitions[part].p_size; 1502 sectoff = lp->d_partitions[part].p_offset; 1503 1504 /* Check transfer bounds against partition size. */ 1505 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1506 return (EINVAL); 1507 1508 /* Offset block number to start of partition. */ 1509 blkno += sectoff; 1510 1511 xs = &sx; 1512 1513 while (totwrt > 0) { 1514 nwrt = totwrt; /* XXX */ 1515 #ifndef SD_DUMP_NOT_TRUSTED 1516 /* 1517 * Fill out the scsi command 1518 */ 1519 memset(&cmd, 0, sizeof(cmd)); 1520 cmd.opcode = WRITE_BIG; 1521 _lto4b(blkno, cmd.addr); 1522 _lto2b(nwrt, cmd.length); 1523 /* 1524 * Fill out the scsipi_xfer structure 1525 * Note: we cannot sleep as we may be an interrupt 1526 * don't use scsipi_command() as it may want to wait 1527 * for an xs. 1528 */ 1529 memset(xs, 0, sizeof(sx)); 1530 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1531 XS_CTL_DATA_OUT; 1532 xs->xs_status = 0; 1533 xs->xs_periph = periph; 1534 xs->xs_retries = SDRETRIES; 1535 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1536 xs->cmd = (struct scsipi_generic *)&cmd; 1537 xs->cmdlen = sizeof(cmd); 1538 xs->resid = nwrt * sectorsize; 1539 xs->error = XS_NOERROR; 1540 xs->bp = 0; 1541 xs->data = va; 1542 xs->datalen = nwrt * sectorsize; 1543 1544 /* 1545 * Pass all this info to the scsi driver. 1546 */ 1547 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1548 if ((xs->xs_status & XS_STS_DONE) == 0 || 1549 xs->error != XS_NOERROR) 1550 return (EIO); 1551 #else /* SD_DUMP_NOT_TRUSTED */ 1552 /* Let's just talk about this first... */ 1553 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1554 delay(500 * 1000); /* half a second */ 1555 #endif /* SD_DUMP_NOT_TRUSTED */ 1556 1557 /* update block count */ 1558 totwrt -= nwrt; 1559 blkno += nwrt; 1560 va += sectorsize * nwrt; 1561 } 1562 sddoingadump = 0; 1563 return (0); 1564 } 1565 1566 static int 1567 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1568 int page, int flags, int *big) 1569 { 1570 1571 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1572 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1573 *big = 1; 1574 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1575 size + sizeof(struct scsipi_mode_header_big), 1576 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1577 } else { 1578 *big = 0; 1579 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1580 size + sizeof(struct scsipi_mode_header), 1581 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1582 } 1583 } 1584 1585 static int 1586 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1587 int flags, int big) 1588 { 1589 1590 if (big) { 1591 struct scsipi_mode_header_big *header = sense; 1592 1593 _lto2b(0, header->data_length); 1594 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1595 size + sizeof(struct scsipi_mode_header_big), 1596 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1597 } else { 1598 struct scsipi_mode_header *header = sense; 1599 1600 header->data_length = 0; 1601 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1602 size + sizeof(struct scsipi_mode_header), 1603 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1604 } 1605 } 1606 1607 static int 1608 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1609 { 1610 struct { 1611 struct scsipi_mode_header header; 1612 /* no block descriptor */ 1613 u_int8_t pg_code; /* page code (should be 6) */ 1614 u_int8_t pg_length; /* page length (should be 11) */ 1615 u_int8_t wcd; /* bit0: cache disable */ 1616 u_int8_t lbs[2]; /* logical block size */ 1617 u_int8_t size[5]; /* number of log. blocks */ 1618 u_int8_t pp; /* power/performance */ 1619 u_int8_t flags; 1620 u_int8_t resvd; 1621 } scsipi_sense; 1622 u_int64_t sectors; 1623 int error; 1624 1625 /* 1626 * scsipi_size (ie "read capacity") and mode sense page 6 1627 * give the same information. Do both for now, and check 1628 * for consistency. 1629 * XXX probably differs for removable media 1630 */ 1631 dp->blksize = 512; 1632 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1633 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1634 1635 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1636 &scsipi_sense.header, sizeof(scsipi_sense), 1637 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1638 1639 if (error != 0) 1640 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1641 1642 dp->blksize = _2btol(scsipi_sense.lbs); 1643 if (dp->blksize == 0) 1644 dp->blksize = 512; 1645 1646 /* 1647 * Create a pseudo-geometry. 1648 */ 1649 dp->heads = 64; 1650 dp->sectors = 32; 1651 dp->cyls = sectors / (dp->heads * dp->sectors); 1652 dp->disksize = _5btol(scsipi_sense.size); 1653 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1654 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1655 (unsigned long long)dp->disksize, 1656 (unsigned long long)sectors); 1657 dp->disksize = sectors; 1658 } 1659 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1660 1661 return (SDGP_RESULT_OK); 1662 } 1663 1664 /* 1665 * Get the scsi driver to send a full inquiry to the * device and use the 1666 * results to fill out the disk parameter structure. 1667 */ 1668 static int 1669 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1670 { 1671 u_int64_t sectors; 1672 int error; 1673 #if 0 1674 int i; 1675 u_int8_t *p; 1676 #endif 1677 1678 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1679 if (sectors == 0) { 1680 struct scsipi_read_format_capacities cmd; 1681 struct { 1682 struct scsipi_capacity_list_header header; 1683 struct scsipi_capacity_descriptor desc; 1684 } __attribute__((packed)) data; 1685 1686 memset(&cmd, 0, sizeof(cmd)); 1687 memset(&data, 0, sizeof(data)); 1688 cmd.opcode = READ_FORMAT_CAPACITIES; 1689 _lto2b(sizeof(data), cmd.length); 1690 1691 error = scsipi_command(sd->sc_periph, 1692 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1693 SDRETRIES, 20000, NULL, 1694 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1695 if (error == EFTYPE) { 1696 /* Medium Format Corrupted, handle as not formatted */ 1697 return (SDGP_RESULT_UNFORMATTED); 1698 } 1699 if (error || data.header.length == 0) 1700 return (SDGP_RESULT_OFFLINE); 1701 1702 #if 0 1703 printf("rfc: length=%d\n", data.header.length); 1704 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"); 1705 #endif 1706 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1707 case SCSIPI_CAP_DESC_CODE_RESERVED: 1708 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1709 break; 1710 1711 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1712 return (SDGP_RESULT_UNFORMATTED); 1713 1714 case SCSIPI_CAP_DESC_CODE_NONE: 1715 return (SDGP_RESULT_OFFLINE); 1716 } 1717 1718 dp->disksize = sectors = _4btol(data.desc.nblks); 1719 if (sectors == 0) 1720 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1721 1722 dp->blksize = _3btol(data.desc.blklen); 1723 if (dp->blksize == 0) 1724 dp->blksize = 512; 1725 } else { 1726 struct sd_mode_sense_data scsipi_sense; 1727 int big, bsize; 1728 struct scsi_blk_desc *bdesc; 1729 1730 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1731 error = sd_mode_sense(sd, 0, &scsipi_sense, 1732 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1733 dp->blksize = 512; 1734 if (!error) { 1735 if (big) { 1736 bdesc = (void *)(&scsipi_sense.header.big + 1); 1737 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1738 } else { 1739 bdesc = (void *)(&scsipi_sense.header.small + 1); 1740 bsize = scsipi_sense.header.small.blk_desc_len; 1741 } 1742 1743 #if 0 1744 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1745 printf("page 0 bsize=%d\n", bsize); 1746 printf("page 0 ok\n"); 1747 #endif 1748 1749 if (bsize >= 8) { 1750 dp->blksize = _3btol(bdesc->blklen); 1751 if (dp->blksize == 0) 1752 dp->blksize = 512; 1753 } 1754 } 1755 } 1756 1757 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1758 return (0); 1759 } 1760 1761 static int 1762 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1763 { 1764 struct sd_mode_sense_data scsipi_sense; 1765 int error; 1766 int big, poffset, byte2; 1767 union scsi_disk_pages *pages; 1768 #if 0 1769 int i; 1770 u_int8_t *p; 1771 #endif 1772 1773 byte2 = SMS_DBD; 1774 again: 1775 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1776 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1777 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1778 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1779 flags | XS_CTL_SILENT, &big); 1780 if (error) { 1781 if (byte2 == SMS_DBD) { 1782 /* No result; try once more with DBD off */ 1783 byte2 = 0; 1784 goto again; 1785 } 1786 return (error); 1787 } 1788 1789 if (big) { 1790 poffset = sizeof scsipi_sense.header.big; 1791 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1792 } else { 1793 poffset = sizeof scsipi_sense.header.small; 1794 poffset += scsipi_sense.header.small.blk_desc_len; 1795 } 1796 1797 pages = (void *)((u_long)&scsipi_sense + poffset); 1798 #if 0 1799 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1800 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1801 #endif 1802 1803 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1804 return (ERESTART); 1805 1806 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1807 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1808 _3btol(pages->rigid_geometry.ncyl), 1809 pages->rigid_geometry.nheads, 1810 _2btol(pages->rigid_geometry.st_cyl_wp), 1811 _2btol(pages->rigid_geometry.st_cyl_rwc), 1812 _2btol(pages->rigid_geometry.land_zone))); 1813 1814 /* 1815 * KLUDGE!! (for zone recorded disks) 1816 * give a number of sectors so that sec * trks * cyls 1817 * is <= disk_size 1818 * can lead to wasted space! THINK ABOUT THIS ! 1819 */ 1820 dp->heads = pages->rigid_geometry.nheads; 1821 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1822 if (dp->heads == 0 || dp->cyls == 0) 1823 return (ERESTART); 1824 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1825 1826 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1827 if (dp->rot_rate == 0) 1828 dp->rot_rate = 3600; 1829 1830 #if 0 1831 printf("page 4 ok\n"); 1832 #endif 1833 return (0); 1834 } 1835 1836 static int 1837 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1838 { 1839 struct sd_mode_sense_data scsipi_sense; 1840 int error; 1841 int big, poffset, byte2; 1842 union scsi_disk_pages *pages; 1843 #if 0 1844 int i; 1845 u_int8_t *p; 1846 #endif 1847 1848 byte2 = SMS_DBD; 1849 again: 1850 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1851 error = sd_mode_sense(sd, 0, &scsipi_sense, 1852 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1853 sizeof(scsipi_sense.pages.flex_geometry), 5, 1854 flags | XS_CTL_SILENT, &big); 1855 if (error) { 1856 if (byte2 == SMS_DBD) { 1857 /* No result; try once more with DBD off */ 1858 byte2 = 0; 1859 goto again; 1860 } 1861 return (error); 1862 } 1863 1864 if (big) { 1865 poffset = sizeof scsipi_sense.header.big; 1866 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1867 } else { 1868 poffset = sizeof scsipi_sense.header.small; 1869 poffset += scsipi_sense.header.small.blk_desc_len; 1870 } 1871 1872 pages = (void *)((u_long)&scsipi_sense + poffset); 1873 #if 0 1874 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1875 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1876 #endif 1877 1878 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1879 return (ERESTART); 1880 1881 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1882 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1883 _3btol(pages->flex_geometry.ncyl), 1884 pages->flex_geometry.nheads, 1885 pages->flex_geometry.ph_sec_tr, 1886 _2btol(pages->flex_geometry.bytes_s))); 1887 1888 dp->heads = pages->flex_geometry.nheads; 1889 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1890 dp->sectors = pages->flex_geometry.ph_sec_tr; 1891 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1892 return (ERESTART); 1893 1894 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1895 if (dp->rot_rate == 0) 1896 dp->rot_rate = 3600; 1897 1898 #if 0 1899 printf("page 5 ok\n"); 1900 #endif 1901 return (0); 1902 } 1903 1904 static int 1905 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1906 { 1907 int error; 1908 1909 /* 1910 * If offline, the SDEV_MEDIA_LOADED flag will be 1911 * cleared by the caller if necessary. 1912 */ 1913 if (sd->type == T_SIMPLE_DIRECT) 1914 return (sd_get_simplifiedparms(sd, dp, flags)); 1915 1916 error = sd_get_capacity(sd, dp, flags); 1917 if (error) 1918 return (error); 1919 1920 if (sd->type == T_OPTICAL) 1921 goto page0; 1922 1923 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1924 if (!sd_get_parms_page5(sd, dp, flags) || 1925 !sd_get_parms_page4(sd, dp, flags)) 1926 return (SDGP_RESULT_OK); 1927 } else { 1928 if (!sd_get_parms_page4(sd, dp, flags) || 1929 !sd_get_parms_page5(sd, dp, flags)) 1930 return (SDGP_RESULT_OK); 1931 } 1932 1933 page0: 1934 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1935 /* Try calling driver's method for figuring out geometry. */ 1936 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1937 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1938 (sd->sc_periph, dp, dp->disksize)) { 1939 /* 1940 * Use adaptec standard fictitious geometry 1941 * this depends on which controller (e.g. 1542C is 1942 * different. but we have to put SOMETHING here..) 1943 */ 1944 dp->heads = 64; 1945 dp->sectors = 32; 1946 dp->cyls = dp->disksize / (64 * 32); 1947 } 1948 dp->rot_rate = 3600; 1949 return (SDGP_RESULT_OK); 1950 } 1951 1952 static int 1953 sd_flush(struct sd_softc *sd, int flags) 1954 { 1955 struct scsipi_periph *periph = sd->sc_periph; 1956 struct scsi_synchronize_cache cmd; 1957 1958 /* 1959 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1960 * We issue with address 0 length 0, which should be 1961 * interpreted by the device as "all remaining blocks 1962 * starting at address 0". We ignore ILLEGAL REQUEST 1963 * in the event that the command is not supported by 1964 * the device, and poll for completion so that we know 1965 * that the cache has actually been flushed. 1966 * 1967 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1968 * command, as indicated by our quirks flags. 1969 * 1970 * XXX What about older devices? 1971 */ 1972 if (periph->periph_version < 2 || 1973 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1974 return (0); 1975 1976 sd->flags |= SDF_FLUSHING; 1977 memset(&cmd, 0, sizeof(cmd)); 1978 cmd.opcode = SCSI_SYNCHRONIZE_CACHE; 1979 1980 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1981 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1982 } 1983 1984 static int 1985 sd_getcache(struct sd_softc *sd, int *bitsp) 1986 { 1987 struct scsipi_periph *periph = sd->sc_periph; 1988 struct sd_mode_sense_data scsipi_sense; 1989 int error, bits = 0; 1990 int big; 1991 union scsi_disk_pages *pages; 1992 1993 if (periph->periph_version < 2) 1994 return (EOPNOTSUPP); 1995 1996 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1997 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1998 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1999 if (error) 2000 return (error); 2001 2002 if (big) 2003 pages = (void *)(&scsipi_sense.header.big + 1); 2004 else 2005 pages = (void *)(&scsipi_sense.header.small + 1); 2006 2007 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2008 bits |= DKCACHE_READ; 2009 if (pages->caching_params.flags & CACHING_WCE) 2010 bits |= DKCACHE_WRITE; 2011 if (pages->caching_params.pg_code & PGCODE_PS) 2012 bits |= DKCACHE_SAVE; 2013 2014 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2015 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2016 sizeof(scsipi_sense.pages.caching_params), 2017 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 2018 if (error == 0) { 2019 if (big) 2020 pages = (void *)(&scsipi_sense.header.big + 1); 2021 else 2022 pages = (void *)(&scsipi_sense.header.small + 1); 2023 2024 if (pages->caching_params.flags & CACHING_RCD) 2025 bits |= DKCACHE_RCHANGE; 2026 if (pages->caching_params.flags & CACHING_WCE) 2027 bits |= DKCACHE_WCHANGE; 2028 } 2029 2030 *bitsp = bits; 2031 2032 return (0); 2033 } 2034 2035 static int 2036 sd_setcache(struct sd_softc *sd, int bits) 2037 { 2038 struct scsipi_periph *periph = sd->sc_periph; 2039 struct sd_mode_sense_data scsipi_sense; 2040 int error; 2041 uint8_t oflags, byte2 = 0; 2042 int big; 2043 union scsi_disk_pages *pages; 2044 2045 if (periph->periph_version < 2) 2046 return (EOPNOTSUPP); 2047 2048 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2049 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2050 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2051 if (error) 2052 return (error); 2053 2054 if (big) 2055 pages = (void *)(&scsipi_sense.header.big + 1); 2056 else 2057 pages = (void *)(&scsipi_sense.header.small + 1); 2058 2059 oflags = pages->caching_params.flags; 2060 2061 if (bits & DKCACHE_READ) 2062 pages->caching_params.flags &= ~CACHING_RCD; 2063 else 2064 pages->caching_params.flags |= CACHING_RCD; 2065 2066 if (bits & DKCACHE_WRITE) 2067 pages->caching_params.flags |= CACHING_WCE; 2068 else 2069 pages->caching_params.flags &= ~CACHING_WCE; 2070 2071 if (oflags == pages->caching_params.flags) 2072 return (0); 2073 2074 pages->caching_params.pg_code &= PGCODE_MASK; 2075 2076 if (bits & DKCACHE_SAVE) 2077 byte2 |= SMS_SP; 2078 2079 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2080 sizeof(struct scsipi_mode_page_header) + 2081 pages->caching_params.pg_length, 0, big)); 2082 } 2083
Indexes created Tue Sep 23 07:09:52 GMT 2025