sd.c revision 1.209
1 /* $NetBSD: sd.c,v 1.209 2003/09/18 00:06:36 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 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 1.209 2003/09/18 00:06:36 mycroft Exp $"); 58 59 #include "opt_scsi.h" 60 #include "opt_bufq.h" 61 #include "rnd.h" 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/scsiio.h> 70 #include <sys/buf.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/scsipi_all.h> 85 #include <dev/scsipi/scsi_all.h> 86 #include <dev/scsipi/scsipi_disk.h> 87 #include <dev/scsipi/scsi_disk.h> 88 #include <dev/scsipi/scsiconf.h> 89 #include <dev/scsipi/sdvar.h> 90 91 #include "sd.h" /* NSD_SCSIBUS and NSD_ATAPIBUS come from here */ 92 93 #define SDUNIT(dev) DISKUNIT(dev) 94 #define SDPART(dev) DISKPART(dev) 95 #define SDMINOR(unit, part) DISKMINOR(unit, part) 96 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 97 98 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 99 100 int sdlock __P((struct sd_softc *)); 101 void sdunlock __P((struct sd_softc *)); 102 void sdminphys __P((struct buf *)); 103 void sdgetdefaultlabel __P((struct sd_softc *, struct disklabel *)); 104 void sdgetdisklabel __P((struct sd_softc *)); 105 void sdstart __P((struct scsipi_periph *)); 106 void sddone __P((struct scsipi_xfer *)); 107 void sd_shutdown __P((void *)); 108 int sd_reassign_blocks __P((struct sd_softc *, u_long)); 109 int sd_interpret_sense __P((struct scsipi_xfer *)); 110 111 int sd_mode_sense __P((struct sd_softc *, u_int8_t, void *, size_t, int, 112 int, int *)); 113 int sd_mode_select __P((struct sd_softc *, u_int8_t, void *, size_t, int, 114 int)); 115 int sd_get_simplifiedparms __P((struct sd_softc *, struct disk_parms *, 116 int)); 117 int sd_get_capacity __P((struct sd_softc *, struct disk_parms *, int)); 118 int sd_get_parms __P((struct sd_softc *, struct disk_parms *, int)); 119 int sd_flush __P((struct sd_softc *, int)); 120 int sd_getcache __P((struct sd_softc *, int *)); 121 int sd_setcache __P((struct sd_softc *, int)); 122 123 int sdmatch __P((struct device *, struct cfdata *, void *)); 124 void sdattach __P((struct device *, struct device *, void *)); 125 int sdactivate __P((struct device *, enum devact)); 126 int sddetach __P((struct device *, int)); 127 128 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 129 sdactivate); 130 131 extern struct cfdriver sd_cd; 132 133 const struct scsipi_inquiry_pattern sd_patterns[] = { 134 {T_DIRECT, T_FIXED, 135 "", "", ""}, 136 {T_DIRECT, T_REMOV, 137 "", "", ""}, 138 {T_OPTICAL, T_FIXED, 139 "", "", ""}, 140 {T_OPTICAL, T_REMOV, 141 "", "", ""}, 142 {T_SIMPLE_DIRECT, T_FIXED, 143 "", "", ""}, 144 {T_SIMPLE_DIRECT, T_REMOV, 145 "", "", ""}, 146 }; 147 148 dev_type_open(sdopen); 149 dev_type_close(sdclose); 150 dev_type_read(sdread); 151 dev_type_write(sdwrite); 152 dev_type_ioctl(sdioctl); 153 dev_type_strategy(sdstrategy); 154 dev_type_dump(sddump); 155 dev_type_size(sdsize); 156 157 const struct bdevsw sd_bdevsw = { 158 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 159 }; 160 161 const struct cdevsw sd_cdevsw = { 162 sdopen, sdclose, sdread, sdwrite, sdioctl, 163 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 164 }; 165 166 struct dkdriver sddkdriver = { sdstrategy }; 167 168 const struct scsipi_periphsw sd_switch = { 169 sd_interpret_sense, /* check our error handler first */ 170 sdstart, /* have a queue, served by this */ 171 NULL, /* have no async handler */ 172 sddone, /* deal with stats at interrupt time */ 173 }; 174 175 struct sd_mode_sense_data { 176 /* 177 * XXX 178 * We are not going to parse this as-is -- it just has to be large 179 * enough. 180 */ 181 union { 182 struct scsipi_mode_header small; 183 struct scsipi_mode_header_big big; 184 } header; 185 struct scsi_blk_desc blk_desc; 186 union scsi_disk_pages pages; 187 }; 188 189 /* 190 * The routine called by the low level scsi routine when it discovers 191 * A device suitable for this driver 192 */ 193 int 194 sdmatch(parent, match, aux) 195 struct device *parent; 196 struct cfdata *match; 197 void *aux; 198 { 199 struct scsipibus_attach_args *sa = aux; 200 int priority; 201 202 (void)scsipi_inqmatch(&sa->sa_inqbuf, 203 (caddr_t)sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 204 sizeof(sd_patterns[0]), &priority); 205 206 return (priority); 207 } 208 209 /* 210 * Attach routine common to atapi & scsi. 211 */ 212 void 213 sdattach(parent, self, aux) 214 struct device *parent, *self; 215 void *aux; 216 { 217 struct sd_softc *sd = (void *)self; 218 struct scsipibus_attach_args *sa = aux; 219 struct scsipi_periph *periph = sa->sa_periph; 220 int error, result; 221 struct disk_parms *dp = &sd->params; 222 char pbuf[9]; 223 224 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 225 226 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 227 if (sd->type == T_SIMPLE_DIRECT) 228 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 229 230 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 231 periph->periph_version == 0) 232 sd->flags |= SDF_ANCIENT; 233 234 #ifdef NEW_BUFQ_STRATEGY 235 bufq_alloc(&sd->buf_queue, BUFQ_READ_PRIO|BUFQ_SORT_RAWBLOCK); 236 #else 237 bufq_alloc(&sd->buf_queue, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 238 #endif 239 240 /* 241 * Store information needed to contact our base driver 242 */ 243 sd->sc_periph = periph; 244 245 periph->periph_dev = &sd->sc_dev; 246 periph->periph_switch = &sd_switch; 247 248 /* 249 * Increase our openings to the maximum-per-periph 250 * supported by the adapter. This will either be 251 * clamped down or grown by the adapter if necessary. 252 */ 253 periph->periph_openings = 254 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 255 periph->periph_flags |= PERIPH_GROW_OPENINGS; 256 257 /* 258 * Initialize and attach the disk structure. 259 */ 260 sd->sc_dk.dk_driver = &sddkdriver; 261 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 262 disk_attach(&sd->sc_dk); 263 264 /* 265 * Use the subdriver to request information regarding the drive. 266 */ 267 aprint_naive("\n"); 268 aprint_normal("\n"); 269 270 error = scsipi_test_unit_ready(periph, 271 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 272 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 273 274 if (error) 275 result = SDGP_RESULT_OFFLINE; 276 else 277 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 278 aprint_normal("%s: ", sd->sc_dev.dv_xname); 279 switch (result) { 280 case SDGP_RESULT_OK: 281 format_bytes(pbuf, sizeof(pbuf), 282 (u_int64_t)dp->disksize * dp->blksize); 283 aprint_normal( 284 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 285 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 286 (unsigned long long)dp->disksize); 287 break; 288 289 case SDGP_RESULT_OFFLINE: 290 aprint_normal("drive offline"); 291 break; 292 293 case SDGP_RESULT_UNFORMATTED: 294 aprint_normal("unformatted media"); 295 break; 296 297 #ifdef DIAGNOSTIC 298 default: 299 panic("sdattach: unknown result from get_parms"); 300 break; 301 #endif 302 } 303 aprint_normal("\n"); 304 305 /* 306 * Establish a shutdown hook so that we can ensure that 307 * our data has actually made it onto the platter at 308 * shutdown time. Note that this relies on the fact 309 * that the shutdown hook code puts us at the head of 310 * the list (thus guaranteeing that our hook runs before 311 * our ancestors'). 312 */ 313 if ((sd->sc_sdhook = 314 shutdownhook_establish(sd_shutdown, sd)) == NULL) 315 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 316 sd->sc_dev.dv_xname); 317 318 #if NRND > 0 319 /* 320 * attach the device into the random source list 321 */ 322 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 323 RND_TYPE_DISK, 0); 324 #endif 325 } 326 327 int 328 sdactivate(self, act) 329 struct device *self; 330 enum devact act; 331 { 332 int rv = 0; 333 334 switch (act) { 335 case DVACT_ACTIVATE: 336 rv = EOPNOTSUPP; 337 break; 338 339 case DVACT_DEACTIVATE: 340 /* 341 * Nothing to do; we key off the device's DVF_ACTIVE. 342 */ 343 break; 344 } 345 return (rv); 346 } 347 348 int 349 sddetach(self, flags) 350 struct device *self; 351 int flags; 352 { 353 struct sd_softc *sd = (struct sd_softc *) self; 354 struct buf *bp; 355 int s, bmaj, cmaj, i, mn; 356 357 /* locate the major number */ 358 bmaj = bdevsw_lookup_major(&sd_bdevsw); 359 cmaj = cdevsw_lookup_major(&sd_cdevsw); 360 361 s = splbio(); 362 363 /* Kill off any queued buffers. */ 364 while ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 365 bp->b_error = EIO; 366 bp->b_flags |= B_ERROR; 367 bp->b_resid = bp->b_bcount; 368 biodone(bp); 369 } 370 371 bufq_free(&sd->buf_queue); 372 373 /* Kill off any pending commands. */ 374 scsipi_kill_pending(sd->sc_periph); 375 376 splx(s); 377 378 /* Nuke the vnodes for any open instances */ 379 for (i = 0; i < MAXPARTITIONS; i++) { 380 mn = SDMINOR(self->dv_unit, i); 381 vdevgone(bmaj, mn, mn, VBLK); 382 vdevgone(cmaj, mn, mn, VCHR); 383 } 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 * Wait interruptibly for an exclusive lock. 401 * 402 * XXX 403 * Several drivers do this; it should be abstracted and made MP-safe. 404 */ 405 int 406 sdlock(sd) 407 struct sd_softc *sd; 408 { 409 int error; 410 411 while ((sd->flags & SDF_LOCKED) != 0) { 412 sd->flags |= SDF_WANTED; 413 if ((error = tsleep(sd, PRIBIO | PCATCH, "sdlck", 0)) != 0) 414 return (error); 415 } 416 sd->flags |= SDF_LOCKED; 417 return (0); 418 } 419 420 /* 421 * Unlock and wake up any waiters. 422 */ 423 void 424 sdunlock(sd) 425 struct sd_softc *sd; 426 { 427 428 sd->flags &= ~SDF_LOCKED; 429 if ((sd->flags & SDF_WANTED) != 0) { 430 sd->flags &= ~SDF_WANTED; 431 wakeup(sd); 432 } 433 } 434 435 /* 436 * open the device. Make sure the partition info is a up-to-date as can be. 437 */ 438 int 439 sdopen(dev, flag, fmt, p) 440 dev_t dev; 441 int flag, fmt; 442 struct proc *p; 443 { 444 struct sd_softc *sd; 445 struct scsipi_periph *periph; 446 struct scsipi_adapter *adapt; 447 int unit, part; 448 int error; 449 450 unit = SDUNIT(dev); 451 if (unit >= sd_cd.cd_ndevs) 452 return (ENXIO); 453 sd = sd_cd.cd_devs[unit]; 454 if (sd == NULL) 455 return (ENXIO); 456 457 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 458 return (ENODEV); 459 460 periph = sd->sc_periph; 461 adapt = periph->periph_channel->chan_adapter; 462 part = SDPART(dev); 463 464 SC_DEBUG(periph, SCSIPI_DB1, 465 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 466 sd_cd.cd_ndevs, part)); 467 468 /* 469 * If this is the first open of this device, add a reference 470 * to the adapter. 471 */ 472 if (sd->sc_dk.dk_openmask == 0 && 473 (error = scsipi_adapter_addref(adapt)) != 0) 474 return (error); 475 476 if ((error = sdlock(sd)) != 0) 477 goto bad4; 478 479 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 480 /* 481 * If any partition is open, but the disk has been invalidated, 482 * disallow further opens of non-raw partition 483 */ 484 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 485 (part != RAW_PART || fmt != S_IFCHR)) { 486 error = EIO; 487 goto bad3; 488 } 489 } else { 490 int silent; 491 492 if (part == RAW_PART && fmt == S_IFCHR) 493 silent = XS_CTL_SILENT; 494 else 495 silent = 0; 496 497 /* Check that it is still responding and ok. */ 498 error = scsipi_test_unit_ready(periph, 499 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 500 silent); 501 502 /* 503 * Start the pack spinning if necessary. Always allow the 504 * raw parition to be opened, for raw IOCTLs. Data transfers 505 * will check for SDEV_MEDIA_LOADED. 506 */ 507 if (error == EIO) { 508 int error2; 509 510 error2 = scsipi_start(periph, SSS_START, silent); 511 switch (error2) { 512 case 0: 513 error = 0; 514 break; 515 case EIO: 516 case EINVAL: 517 break; 518 default: 519 error = error2; 520 break; 521 } 522 } 523 if (error) { 524 if (silent) 525 goto out; 526 goto bad3; 527 } 528 529 periph->periph_flags |= PERIPH_OPEN; 530 531 if (periph->periph_flags & PERIPH_REMOVABLE) { 532 /* Lock the pack in. */ 533 error = scsipi_prevent(periph, PR_PREVENT, 534 XS_CTL_IGNORE_ILLEGAL_REQUEST | 535 XS_CTL_IGNORE_MEDIA_CHANGE); 536 if (error) 537 goto bad; 538 } 539 540 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 541 periph->periph_flags |= PERIPH_MEDIA_LOADED; 542 543 /* 544 * Load the physical device parameters. 545 * 546 * Note that if media is present but unformatted, 547 * we allow the open (so that it can be formatted!). 548 * The drive should refuse real I/O, if the media is 549 * unformatted. 550 */ 551 if (sd_get_parms(sd, &sd->params, 552 0) == SDGP_RESULT_OFFLINE) { 553 error = ENXIO; 554 goto bad2; 555 } 556 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 557 558 /* Load the partition info if not already loaded. */ 559 sdgetdisklabel(sd); 560 SC_DEBUG(periph, SCSIPI_DB3, ("Disklabel loaded ")); 561 } 562 } 563 564 /* Check that the partition exists. */ 565 if (part != RAW_PART && 566 (part >= sd->sc_dk.dk_label->d_npartitions || 567 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 568 error = ENXIO; 569 goto bad; 570 } 571 572 out: /* Insure only one open at a time. */ 573 switch (fmt) { 574 case S_IFCHR: 575 sd->sc_dk.dk_copenmask |= (1 << part); 576 break; 577 case S_IFBLK: 578 sd->sc_dk.dk_bopenmask |= (1 << part); 579 break; 580 } 581 sd->sc_dk.dk_openmask = 582 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 583 584 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 585 sdunlock(sd); 586 return (0); 587 588 bad2: 589 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 590 591 bad: 592 if (sd->sc_dk.dk_openmask == 0) { 593 if (periph->periph_flags & PERIPH_REMOVABLE) 594 scsipi_prevent(periph, PR_ALLOW, 595 XS_CTL_IGNORE_ILLEGAL_REQUEST | 596 XS_CTL_IGNORE_MEDIA_CHANGE); 597 periph->periph_flags &= ~PERIPH_OPEN; 598 } 599 600 bad3: 601 sdunlock(sd); 602 bad4: 603 if (sd->sc_dk.dk_openmask == 0) 604 scsipi_adapter_delref(adapt); 605 return (error); 606 } 607 608 /* 609 * close the device.. only called if we are the LAST occurence of an open 610 * device. Convenient now but usually a pain. 611 */ 612 int 613 sdclose(dev, flag, fmt, p) 614 dev_t dev; 615 int flag, fmt; 616 struct proc *p; 617 { 618 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 619 struct scsipi_periph *periph = sd->sc_periph; 620 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 621 int part = SDPART(dev); 622 int error; 623 624 if ((error = sdlock(sd)) != 0) 625 return (error); 626 627 switch (fmt) { 628 case S_IFCHR: 629 sd->sc_dk.dk_copenmask &= ~(1 << part); 630 break; 631 case S_IFBLK: 632 sd->sc_dk.dk_bopenmask &= ~(1 << part); 633 break; 634 } 635 sd->sc_dk.dk_openmask = 636 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 637 638 if (sd->sc_dk.dk_openmask == 0) { 639 /* 640 * If the disk cache needs flushing, and the disk supports 641 * it, do it now. 642 */ 643 if ((sd->flags & SDF_DIRTY) != 0) { 644 if (sd_flush(sd, 0)) { 645 printf("%s: cache synchronization failed\n", 646 sd->sc_dev.dv_xname); 647 sd->flags &= ~SDF_FLUSHING; 648 } else 649 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 650 } 651 652 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 653 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 654 655 scsipi_wait_drain(periph); 656 657 if (periph->periph_flags & PERIPH_REMOVABLE) 658 scsipi_prevent(periph, PR_ALLOW, 659 XS_CTL_IGNORE_ILLEGAL_REQUEST | 660 XS_CTL_IGNORE_NOT_READY); 661 periph->periph_flags &= ~PERIPH_OPEN; 662 663 scsipi_wait_drain(periph); 664 665 scsipi_adapter_delref(adapt); 666 } 667 668 sdunlock(sd); 669 return (0); 670 } 671 672 /* 673 * Actually translate the requested transfer into one the physical driver 674 * can understand. The transfer is described by a buf and will include 675 * only one physical transfer. 676 */ 677 void 678 sdstrategy(bp) 679 struct buf *bp; 680 { 681 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 682 struct scsipi_periph *periph = sd->sc_periph; 683 struct disklabel *lp; 684 daddr_t blkno; 685 int s; 686 boolean_t sector_aligned; 687 688 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 689 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 690 ("%ld bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 691 /* 692 * If the device has been made invalid, error out 693 */ 694 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 695 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 696 if (periph->periph_flags & PERIPH_OPEN) 697 bp->b_error = EIO; 698 else 699 bp->b_error = ENODEV; 700 goto bad; 701 } 702 703 lp = sd->sc_dk.dk_label; 704 705 /* 706 * The transfer must be a whole number of blocks, offset must not be 707 * negative. 708 */ 709 if (lp->d_secsize == DEV_BSIZE) { 710 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 711 } else { 712 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 713 } 714 if (!sector_aligned || bp->b_blkno < 0) { 715 bp->b_error = EINVAL; 716 goto bad; 717 } 718 /* 719 * If it's a null transfer, return immediatly 720 */ 721 if (bp->b_bcount == 0) 722 goto done; 723 724 /* 725 * Do bounds checking, adjust transfer. if error, process. 726 * If end of partition, just return. 727 */ 728 if (SDPART(bp->b_dev) == RAW_PART) { 729 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 730 sd->params.disksize512) <= 0) 731 goto done; 732 } else { 733 if (bounds_check_with_label(&sd->sc_dk, bp, 734 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 735 goto done; 736 } 737 738 /* 739 * Now convert the block number to absolute and put it in 740 * terms of the device's logical block size. 741 */ 742 if (lp->d_secsize == DEV_BSIZE) 743 blkno = bp->b_blkno; 744 else if (lp->d_secsize > DEV_BSIZE) 745 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 746 else 747 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 748 749 if (SDPART(bp->b_dev) != RAW_PART) 750 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 751 752 bp->b_rawblkno = blkno; 753 754 s = splbio(); 755 756 /* 757 * Place it in the queue of disk activities for this disk. 758 * 759 * XXX Only do disksort() if the current operating mode does not 760 * XXX include tagged queueing. 761 */ 762 BUFQ_PUT(&sd->buf_queue, bp); 763 764 /* 765 * Tell the device to get going on the transfer if it's 766 * not doing anything, otherwise just wait for completion 767 */ 768 sdstart(sd->sc_periph); 769 770 splx(s); 771 return; 772 773 bad: 774 bp->b_flags |= B_ERROR; 775 done: 776 /* 777 * Correctly set the buf to indicate a completed xfer 778 */ 779 bp->b_resid = bp->b_bcount; 780 biodone(bp); 781 } 782 783 /* 784 * sdstart looks to see if there is a buf waiting for the device 785 * and that the device is not already busy. If both are true, 786 * It dequeues the buf and creates a scsi command to perform the 787 * transfer in the buf. The transfer request will call scsipi_done 788 * on completion, which will in turn call this routine again 789 * so that the next queued transfer is performed. 790 * The bufs are queued by the strategy routine (sdstrategy) 791 * 792 * This routine is also called after other non-queued requests 793 * have been made of the scsi driver, to ensure that the queue 794 * continues to be drained. 795 * 796 * must be called at the correct (highish) spl level 797 * sdstart() is called at splbio from sdstrategy and scsipi_done 798 */ 799 void 800 sdstart(periph) 801 struct scsipi_periph *periph; 802 { 803 struct sd_softc *sd = (void *)periph->periph_dev; 804 struct disklabel *lp = sd->sc_dk.dk_label; 805 struct buf *bp = 0; 806 struct scsipi_rw_big cmd_big; 807 #if NSD_SCSIBUS > 0 808 struct scsi_rw cmd_small; 809 #endif 810 struct scsipi_generic *cmdp; 811 int nblks, cmdlen, error, flags; 812 813 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 814 /* 815 * Check if the device has room for another command 816 */ 817 while (periph->periph_active < periph->periph_openings) { 818 /* 819 * there is excess capacity, but a special waits 820 * It'll need the adapter as soon as we clear out of the 821 * way and let it run (user level wait). 822 */ 823 if (periph->periph_flags & PERIPH_WAITING) { 824 periph->periph_flags &= ~PERIPH_WAITING; 825 wakeup((caddr_t)periph); 826 return; 827 } 828 829 /* 830 * See if there is a buf with work for us to do.. 831 */ 832 if ((bp = BUFQ_GET(&sd->buf_queue)) == NULL) 833 return; 834 835 /* 836 * If the device has become invalid, abort all the 837 * reads and writes until all files have been closed and 838 * re-opened 839 */ 840 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 841 bp->b_error = EIO; 842 bp->b_flags |= B_ERROR; 843 bp->b_resid = bp->b_bcount; 844 biodone(bp); 845 continue; 846 } 847 848 /* 849 * We have a buf, now we should make a command. 850 */ 851 852 if (lp->d_secsize == DEV_BSIZE) 853 nblks = bp->b_bcount >> DEV_BSHIFT; 854 else 855 nblks = howmany(bp->b_bcount, lp->d_secsize); 856 857 #if NSD_SCSIBUS > 0 858 /* 859 * Fill out the scsi command. If the transfer will 860 * fit in a "small" cdb, use it. 861 */ 862 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 863 ((nblks & 0xff) == nblks) && 864 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 865 /* 866 * We can fit in a small cdb. 867 */ 868 memset(&cmd_small, 0, sizeof(cmd_small)); 869 cmd_small.opcode = (bp->b_flags & B_READ) ? 870 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 871 _lto3b(bp->b_rawblkno, cmd_small.addr); 872 cmd_small.length = nblks & 0xff; 873 cmdlen = sizeof(cmd_small); 874 cmdp = (struct scsipi_generic *)&cmd_small; 875 } else 876 #endif /* NSD_SCSIBUS > 0 */ 877 { 878 /* 879 * Need a large cdb. 880 */ 881 memset(&cmd_big, 0, sizeof(cmd_big)); 882 cmd_big.opcode = (bp->b_flags & B_READ) ? 883 READ_BIG : WRITE_BIG; 884 _lto4b(bp->b_rawblkno, cmd_big.addr); 885 _lto2b(nblks, cmd_big.length); 886 cmdlen = sizeof(cmd_big); 887 cmdp = (struct scsipi_generic *)&cmd_big; 888 } 889 890 /* Instrumentation. */ 891 disk_busy(&sd->sc_dk); 892 893 /* 894 * Mark the disk dirty so that the cache will be 895 * flushed on close. 896 */ 897 if ((bp->b_flags & B_READ) == 0) 898 sd->flags |= SDF_DIRTY; 899 900 /* 901 * Figure out what flags to use. 902 */ 903 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 904 if (bp->b_flags & B_READ) 905 flags |= XS_CTL_DATA_IN; 906 else 907 flags |= XS_CTL_DATA_OUT; 908 909 /* 910 * Call the routine that chats with the adapter. 911 * Note: we cannot sleep as we may be an interrupt 912 */ 913 error = scsipi_command(periph, cmdp, cmdlen, 914 (u_char *)bp->b_data, bp->b_bcount, 915 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 916 if (error) { 917 disk_unbusy(&sd->sc_dk, 0, 0); 918 printf("%s: not queued, error %d\n", 919 sd->sc_dev.dv_xname, error); 920 } 921 } 922 } 923 924 void 925 sddone(xs) 926 struct scsipi_xfer *xs; 927 { 928 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 929 930 if (sd->flags & SDF_FLUSHING) { 931 /* Flush completed, no longer dirty. */ 932 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 933 } 934 935 if (xs->bp != NULL) { 936 disk_unbusy(&sd->sc_dk, xs->bp->b_bcount - xs->bp->b_resid, 937 (xs->bp->b_flags & B_READ)); 938 #if NRND > 0 939 rnd_add_uint32(&sd->rnd_source, xs->bp->b_rawblkno); 940 #endif 941 } 942 } 943 944 void 945 sdminphys(bp) 946 struct buf *bp; 947 { 948 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 949 long max; 950 951 /* 952 * If the device is ancient, we want to make sure that 953 * the transfer fits into a 6-byte cdb. 954 * 955 * XXX Note that the SCSI-I spec says that 256-block transfers 956 * are allowed in a 6-byte read/write, and are specified 957 * by settng the "length" to 0. However, we're conservative 958 * here, allowing only 255-block transfers in case an 959 * ancient device gets confused by length == 0. A length of 0 960 * in a 10-byte read/write actually means 0 blocks. 961 */ 962 if ((sd->flags & SDF_ANCIENT) && 963 ((sd->sc_periph->periph_flags & 964 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 965 max = sd->sc_dk.dk_label->d_secsize * 0xff; 966 967 if (bp->b_bcount > max) 968 bp->b_bcount = max; 969 } 970 971 (*sd->sc_periph->periph_channel->chan_adapter->adapt_minphys)(bp); 972 } 973 974 int 975 sdread(dev, uio, ioflag) 976 dev_t dev; 977 struct uio *uio; 978 int ioflag; 979 { 980 981 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 982 } 983 984 int 985 sdwrite(dev, uio, ioflag) 986 dev_t dev; 987 struct uio *uio; 988 int ioflag; 989 { 990 991 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 992 } 993 994 /* 995 * Perform special action on behalf of the user 996 * Knows about the internals of this device 997 */ 998 int 999 sdioctl(dev, cmd, addr, flag, p) 1000 dev_t dev; 1001 u_long cmd; 1002 caddr_t addr; 1003 int flag; 1004 struct proc *p; 1005 { 1006 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1007 struct scsipi_periph *periph = sd->sc_periph; 1008 int part = SDPART(dev); 1009 int error = 0; 1010 #ifdef __HAVE_OLD_DISKLABEL 1011 struct disklabel *newlabel = NULL; 1012 #endif 1013 1014 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1015 1016 /* 1017 * If the device is not valid, some IOCTLs can still be 1018 * handled on the raw partition. Check this here. 1019 */ 1020 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1021 switch (cmd) { 1022 case DIOCKLABEL: 1023 case DIOCWLABEL: 1024 case DIOCLOCK: 1025 case DIOCEJECT: 1026 case ODIOCEJECT: 1027 case DIOCGCACHE: 1028 case DIOCSCACHE: 1029 case SCIOCIDENTIFY: 1030 case OSCIOCIDENTIFY: 1031 case SCIOCCOMMAND: 1032 case SCIOCDEBUG: 1033 if (part == RAW_PART) 1034 break; 1035 /* FALLTHROUGH */ 1036 default: 1037 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1038 return (ENODEV); 1039 else 1040 return (EIO); 1041 } 1042 } 1043 1044 switch (cmd) { 1045 case DIOCGDINFO: 1046 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1047 return (0); 1048 1049 #ifdef __HAVE_OLD_DISKLABEL 1050 case ODIOCGDINFO: 1051 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1052 if (newlabel == NULL) 1053 return EIO; 1054 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1055 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1056 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1057 else 1058 error = ENOTTY; 1059 free(newlabel, M_TEMP); 1060 return error; 1061 #endif 1062 1063 case DIOCGPART: 1064 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1065 ((struct partinfo *)addr)->part = 1066 &sd->sc_dk.dk_label->d_partitions[part]; 1067 return (0); 1068 1069 case DIOCWDINFO: 1070 case DIOCSDINFO: 1071 #ifdef __HAVE_OLD_DISKLABEL 1072 case ODIOCWDINFO: 1073 case ODIOCSDINFO: 1074 #endif 1075 { 1076 struct disklabel *lp; 1077 1078 if ((flag & FWRITE) == 0) 1079 return (EBADF); 1080 1081 #ifdef __HAVE_OLD_DISKLABEL 1082 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1083 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1084 if (newlabel == NULL) 1085 return EIO; 1086 memset(newlabel, 0, sizeof newlabel); 1087 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1088 lp = newlabel; 1089 } else 1090 #endif 1091 lp = (struct disklabel *)addr; 1092 1093 if ((error = sdlock(sd)) != 0) 1094 goto bad; 1095 sd->flags |= SDF_LABELLING; 1096 1097 error = setdisklabel(sd->sc_dk.dk_label, 1098 lp, /*sd->sc_dk.dk_openmask : */0, 1099 sd->sc_dk.dk_cpulabel); 1100 if (error == 0) { 1101 if (cmd == DIOCWDINFO 1102 #ifdef __HAVE_OLD_DISKLABEL 1103 || cmd == ODIOCWDINFO 1104 #endif 1105 ) 1106 error = writedisklabel(SDLABELDEV(dev), 1107 sdstrategy, sd->sc_dk.dk_label, 1108 sd->sc_dk.dk_cpulabel); 1109 } 1110 1111 sd->flags &= ~SDF_LABELLING; 1112 sdunlock(sd); 1113 bad: 1114 #ifdef __HAVE_OLD_DISKLABEL 1115 if (newlabel != NULL) 1116 free(newlabel, M_TEMP); 1117 #endif 1118 return (error); 1119 } 1120 1121 case DIOCKLABEL: 1122 if (*(int *)addr) 1123 periph->periph_flags |= PERIPH_KEEP_LABEL; 1124 else 1125 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1126 return (0); 1127 1128 case DIOCWLABEL: 1129 if ((flag & FWRITE) == 0) 1130 return (EBADF); 1131 if (*(int *)addr) 1132 sd->flags |= SDF_WLABEL; 1133 else 1134 sd->flags &= ~SDF_WLABEL; 1135 return (0); 1136 1137 case DIOCLOCK: 1138 return (scsipi_prevent(periph, 1139 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1140 1141 case DIOCEJECT: 1142 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1143 return (ENOTTY); 1144 if (*(int *)addr == 0) { 1145 /* 1146 * Don't force eject: check that we are the only 1147 * partition open. If so, unlock it. 1148 */ 1149 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1150 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1151 sd->sc_dk.dk_openmask) { 1152 error = scsipi_prevent(periph, PR_ALLOW, 1153 XS_CTL_IGNORE_NOT_READY); 1154 if (error) 1155 return (error); 1156 } else { 1157 return (EBUSY); 1158 } 1159 } 1160 /* FALLTHROUGH */ 1161 case ODIOCEJECT: 1162 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1163 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1164 1165 case DIOCGDEFLABEL: 1166 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1167 return (0); 1168 1169 #ifdef __HAVE_OLD_DISKLABEL 1170 case ODIOCGDEFLABEL: 1171 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1172 if (newlabel == NULL) 1173 return EIO; 1174 sdgetdefaultlabel(sd, newlabel); 1175 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1176 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1177 else 1178 error = ENOTTY; 1179 free(newlabel, M_TEMP); 1180 return error; 1181 #endif 1182 1183 case DIOCGCACHE: 1184 return (sd_getcache(sd, (int *) addr)); 1185 1186 case DIOCSCACHE: 1187 if ((flag & FWRITE) == 0) 1188 return (EBADF); 1189 return (sd_setcache(sd, *(int *) addr)); 1190 1191 case DIOCCACHESYNC: 1192 /* 1193 * XXX Do we really need to care about having a writable 1194 * file descriptor here? 1195 */ 1196 if ((flag & FWRITE) == 0) 1197 return (EBADF); 1198 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1199 error = sd_flush(sd, 0); 1200 if (error) 1201 sd->flags &= ~SDF_FLUSHING; 1202 else 1203 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1204 } else 1205 error = 0; 1206 return (error); 1207 1208 default: 1209 if (part != RAW_PART) 1210 return (ENOTTY); 1211 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1212 } 1213 1214 #ifdef DIAGNOSTIC 1215 panic("sdioctl: impossible"); 1216 #endif 1217 } 1218 1219 void 1220 sdgetdefaultlabel(sd, lp) 1221 struct sd_softc *sd; 1222 struct disklabel *lp; 1223 { 1224 1225 memset(lp, 0, sizeof(struct disklabel)); 1226 1227 lp->d_secsize = sd->params.blksize; 1228 lp->d_ntracks = sd->params.heads; 1229 lp->d_nsectors = sd->params.sectors; 1230 lp->d_ncylinders = sd->params.cyls; 1231 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1232 1233 switch (scsipi_periph_bustype(sd->sc_periph)) { 1234 #if NSD_SCSIBUS > 0 1235 case SCSIPI_BUSTYPE_SCSI: 1236 lp->d_type = DTYPE_SCSI; 1237 break; 1238 #endif 1239 #if NSD_ATAPIBUS > 0 1240 case SCSIPI_BUSTYPE_ATAPI: 1241 lp->d_type = DTYPE_ATAPI; 1242 break; 1243 #endif 1244 } 1245 strncpy(lp->d_typename, "mydisk", 16); 1246 strncpy(lp->d_packname, "fictitious", 16); 1247 lp->d_secperunit = sd->params.disksize; 1248 lp->d_rpm = sd->params.rot_rate; 1249 lp->d_interleave = 1; 1250 lp->d_flags = 0; 1251 1252 lp->d_partitions[RAW_PART].p_offset = 0; 1253 lp->d_partitions[RAW_PART].p_size = 1254 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1255 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1256 lp->d_npartitions = RAW_PART + 1; 1257 1258 lp->d_magic = DISKMAGIC; 1259 lp->d_magic2 = DISKMAGIC; 1260 lp->d_checksum = dkcksum(lp); 1261 } 1262 1263 1264 /* 1265 * Load the label information on the named device 1266 */ 1267 void 1268 sdgetdisklabel(sd) 1269 struct sd_softc *sd; 1270 { 1271 struct disklabel *lp = sd->sc_dk.dk_label; 1272 const char *errstring; 1273 1274 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1275 1276 sdgetdefaultlabel(sd, lp); 1277 1278 if (lp->d_secpercyl == 0) { 1279 lp->d_secpercyl = 100; 1280 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1281 } 1282 1283 /* 1284 * Call the generic disklabel extraction routine 1285 */ 1286 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1287 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1288 if (errstring) { 1289 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1290 return; 1291 } 1292 } 1293 1294 void 1295 sd_shutdown(arg) 1296 void *arg; 1297 { 1298 struct sd_softc *sd = arg; 1299 1300 /* 1301 * If the disk cache needs to be flushed, and the disk supports 1302 * it, flush it. We're cold at this point, so we poll for 1303 * completion. 1304 */ 1305 if ((sd->flags & SDF_DIRTY) != 0) { 1306 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1307 printf("%s: cache synchronization failed\n", 1308 sd->sc_dev.dv_xname); 1309 sd->flags &= ~SDF_FLUSHING; 1310 } else 1311 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1312 } 1313 } 1314 1315 /* 1316 * Tell the device to map out a defective block 1317 */ 1318 int 1319 sd_reassign_blocks(sd, blkno) 1320 struct sd_softc *sd; 1321 u_long blkno; 1322 { 1323 struct scsi_reassign_blocks scsipi_cmd; 1324 struct scsi_reassign_blocks_data rbdata; 1325 1326 memset(&scsipi_cmd, 0, sizeof(scsipi_cmd)); 1327 memset(&rbdata, 0, sizeof(rbdata)); 1328 scsipi_cmd.opcode = SCSI_REASSIGN_BLOCKS; 1329 1330 _lto2b(sizeof(rbdata.defect_descriptor[0]), rbdata.length); 1331 _lto4b(blkno, rbdata.defect_descriptor[0].dlbaddr); 1332 1333 return (scsipi_command(sd->sc_periph, 1334 (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), 1335 (u_char *)&rbdata, sizeof(rbdata), SDRETRIES, 5000, NULL, 1336 XS_CTL_DATA_OUT | XS_CTL_DATA_ONSTACK)); 1337 } 1338 1339 /* 1340 * Check Errors 1341 */ 1342 int 1343 sd_interpret_sense(xs) 1344 struct scsipi_xfer *xs; 1345 { 1346 struct scsipi_periph *periph = xs->xs_periph; 1347 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1348 struct sd_softc *sd = (void *)periph->periph_dev; 1349 int s, error, retval = EJUSTRETURN; 1350 1351 /* 1352 * If the periph is already recovering, just do the normal 1353 * error processing. 1354 */ 1355 if (periph->periph_flags & PERIPH_RECOVERING) 1356 return (retval); 1357 1358 /* 1359 * If the device is not open yet, let the generic code handle it. 1360 */ 1361 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1362 return (retval); 1363 1364 /* 1365 * If it isn't a extended or extended/deferred error, let 1366 * the generic code handle it. 1367 */ 1368 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1369 (sense->error_code & SSD_ERRCODE) != 0x71) 1370 return (retval); 1371 1372 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1373 sense->add_sense_code == 0x4) { 1374 if (sense->add_sense_code_qual == 0x01) { 1375 /* 1376 * Unit In The Process Of Becoming Ready. 1377 */ 1378 printf("%s: waiting for pack to spin up...\n", 1379 sd->sc_dev.dv_xname); 1380 if (!callout_pending(&periph->periph_callout)) 1381 scsipi_periph_freeze(periph, 1); 1382 callout_reset(&periph->periph_callout, 1383 5 * hz, scsipi_periph_timed_thaw, periph); 1384 retval = ERESTART; 1385 } else if (sense->add_sense_code_qual == 0x02) { 1386 printf("%s: pack is stopped, restarting...\n", 1387 sd->sc_dev.dv_xname); 1388 s = splbio(); 1389 periph->periph_flags |= PERIPH_RECOVERING; 1390 splx(s); 1391 error = scsipi_start(periph, SSS_START, 1392 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1393 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1394 if (error) { 1395 printf("%s: unable to restart pack\n", 1396 sd->sc_dev.dv_xname); 1397 retval = error; 1398 } else 1399 retval = ERESTART; 1400 s = splbio(); 1401 periph->periph_flags &= ~PERIPH_RECOVERING; 1402 splx(s); 1403 } 1404 } 1405 return (retval); 1406 } 1407 1408 1409 int 1410 sdsize(dev) 1411 dev_t dev; 1412 { 1413 struct sd_softc *sd; 1414 int part, unit, omask; 1415 int size; 1416 1417 unit = SDUNIT(dev); 1418 if (unit >= sd_cd.cd_ndevs) 1419 return (-1); 1420 sd = sd_cd.cd_devs[unit]; 1421 if (sd == NULL) 1422 return (-1); 1423 1424 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1425 return (-1); 1426 1427 part = SDPART(dev); 1428 omask = sd->sc_dk.dk_openmask & (1 << part); 1429 1430 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1431 return (-1); 1432 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1433 size = -1; 1434 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1435 size = -1; 1436 else 1437 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1438 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1439 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1440 return (-1); 1441 return (size); 1442 } 1443 1444 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1445 static struct scsipi_xfer sx; 1446 static int sddoingadump; 1447 1448 /* 1449 * dump all of physical memory into the partition specified, starting 1450 * at offset 'dumplo' into the partition. 1451 */ 1452 int 1453 sddump(dev, blkno, va, size) 1454 dev_t dev; 1455 daddr_t blkno; 1456 caddr_t va; 1457 size_t size; 1458 { 1459 struct sd_softc *sd; /* disk unit to do the I/O */ 1460 struct disklabel *lp; /* disk's disklabel */ 1461 int unit, part; 1462 int sectorsize; /* size of a disk sector */ 1463 int nsects; /* number of sectors in partition */ 1464 int sectoff; /* sector offset of partition */ 1465 int totwrt; /* total number of sectors left to write */ 1466 int nwrt; /* current number of sectors to write */ 1467 struct scsipi_rw_big cmd; /* write command */ 1468 struct scsipi_xfer *xs; /* ... convenience */ 1469 struct scsipi_periph *periph; 1470 struct scsipi_channel *chan; 1471 1472 /* Check if recursive dump; if so, punt. */ 1473 if (sddoingadump) 1474 return (EFAULT); 1475 1476 /* Mark as active early. */ 1477 sddoingadump = 1; 1478 1479 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1480 part = SDPART(dev); 1481 1482 /* Check for acceptable drive number. */ 1483 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1484 return (ENXIO); 1485 1486 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1487 return (ENODEV); 1488 1489 periph = sd->sc_periph; 1490 chan = periph->periph_channel; 1491 1492 /* Make sure it was initialized. */ 1493 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1494 return (ENXIO); 1495 1496 /* Convert to disk sectors. Request must be a multiple of size. */ 1497 lp = sd->sc_dk.dk_label; 1498 sectorsize = lp->d_secsize; 1499 if ((size % sectorsize) != 0) 1500 return (EFAULT); 1501 totwrt = size / sectorsize; 1502 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1503 1504 nsects = lp->d_partitions[part].p_size; 1505 sectoff = lp->d_partitions[part].p_offset; 1506 1507 /* Check transfer bounds against partition size. */ 1508 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1509 return (EINVAL); 1510 1511 /* Offset block number to start of partition. */ 1512 blkno += sectoff; 1513 1514 xs = &sx; 1515 1516 while (totwrt > 0) { 1517 nwrt = totwrt; /* XXX */ 1518 #ifndef SD_DUMP_NOT_TRUSTED 1519 /* 1520 * Fill out the scsi command 1521 */ 1522 memset(&cmd, 0, sizeof(cmd)); 1523 cmd.opcode = WRITE_BIG; 1524 _lto4b(blkno, cmd.addr); 1525 _lto2b(nwrt, cmd.length); 1526 /* 1527 * Fill out the scsipi_xfer structure 1528 * Note: we cannot sleep as we may be an interrupt 1529 * don't use scsipi_command() as it may want to wait 1530 * for an xs. 1531 */ 1532 memset(xs, 0, sizeof(sx)); 1533 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1534 XS_CTL_DATA_OUT; 1535 xs->xs_status = 0; 1536 xs->xs_periph = periph; 1537 xs->xs_retries = SDRETRIES; 1538 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1539 xs->cmd = (struct scsipi_generic *)&cmd; 1540 xs->cmdlen = sizeof(cmd); 1541 xs->resid = nwrt * sectorsize; 1542 xs->error = XS_NOERROR; 1543 xs->bp = 0; 1544 xs->data = va; 1545 xs->datalen = nwrt * sectorsize; 1546 1547 /* 1548 * Pass all this info to the scsi driver. 1549 */ 1550 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1551 if ((xs->xs_status & XS_STS_DONE) == 0 || 1552 xs->error != XS_NOERROR) 1553 return (EIO); 1554 #else /* SD_DUMP_NOT_TRUSTED */ 1555 /* Let's just talk about this first... */ 1556 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1557 delay(500 * 1000); /* half a second */ 1558 #endif /* SD_DUMP_NOT_TRUSTED */ 1559 1560 /* update block count */ 1561 totwrt -= nwrt; 1562 blkno += nwrt; 1563 va += sectorsize * nwrt; 1564 } 1565 sddoingadump = 0; 1566 return (0); 1567 } 1568 1569 int 1570 sd_mode_sense(sd, byte2, sense, size, page, flags, big) 1571 struct sd_softc *sd; 1572 u_int8_t byte2; 1573 void *sense; 1574 size_t size; 1575 int page, flags; 1576 int *big; 1577 { 1578 1579 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1580 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1581 *big = 1; 1582 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1583 size + sizeof(struct scsipi_mode_header_big), 1584 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1585 } else { 1586 *big = 0; 1587 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1588 size + sizeof(struct scsipi_mode_header), 1589 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1590 } 1591 } 1592 1593 int 1594 sd_mode_select(sd, byte2, sense, size, flags, big) 1595 struct sd_softc *sd; 1596 u_int8_t byte2; 1597 void *sense; 1598 size_t size; 1599 int flags, big; 1600 { 1601 1602 if (big) { 1603 struct scsipi_mode_header_big *header = sense; 1604 1605 _lto2b(0, header->data_length); 1606 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1607 size + sizeof(struct scsipi_mode_header_big), 1608 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1609 } else { 1610 struct scsipi_mode_header *header = sense; 1611 1612 header->data_length = 0; 1613 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1614 size + sizeof(struct scsipi_mode_header), 1615 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1616 } 1617 } 1618 1619 int 1620 sd_get_simplifiedparms(sd, dp, flags) 1621 struct sd_softc *sd; 1622 struct disk_parms *dp; 1623 int flags; 1624 { 1625 struct { 1626 struct scsipi_mode_header header; 1627 /* no block descriptor */ 1628 u_int8_t pg_code; /* page code (should be 6) */ 1629 u_int8_t pg_length; /* page length (should be 11) */ 1630 u_int8_t wcd; /* bit0: cache disable */ 1631 u_int8_t lbs[2]; /* logical block size */ 1632 u_int8_t size[5]; /* number of log. blocks */ 1633 u_int8_t pp; /* power/performance */ 1634 u_int8_t flags; 1635 u_int8_t resvd; 1636 } scsipi_sense; 1637 u_int64_t sectors; 1638 int error; 1639 1640 /* 1641 * scsipi_size (ie "read capacity") and mode sense page 6 1642 * give the same information. Do both for now, and check 1643 * for consistency. 1644 * XXX probably differs for removable media 1645 */ 1646 dp->blksize = 512; 1647 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1648 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1649 1650 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1651 &scsipi_sense.header, sizeof(scsipi_sense), 1652 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1653 1654 if (error != 0) 1655 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1656 1657 dp->blksize = _2btol(scsipi_sense.lbs); 1658 if (dp->blksize == 0) 1659 dp->blksize = 512; 1660 1661 /* 1662 * Create a pseudo-geometry. 1663 */ 1664 dp->heads = 64; 1665 dp->sectors = 32; 1666 dp->cyls = sectors / (dp->heads * dp->sectors); 1667 dp->disksize = _5btol(scsipi_sense.size); 1668 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1669 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1670 (unsigned long long)dp->disksize, 1671 (unsigned long long)sectors); 1672 dp->disksize = sectors; 1673 } 1674 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1675 1676 return (SDGP_RESULT_OK); 1677 } 1678 1679 /* 1680 * Get the scsi driver to send a full inquiry to the * device and use the 1681 * results to fill out the disk parameter structure. 1682 */ 1683 int 1684 sd_get_capacity(sd, dp, flags) 1685 struct sd_softc *sd; 1686 struct disk_parms *dp; 1687 int flags; 1688 { 1689 u_int64_t sectors; 1690 int error; 1691 #if 0 1692 int i; 1693 u_int8_t *p; 1694 #endif 1695 1696 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1697 if (sectors == 0) { 1698 struct scsipi_read_format_capacities scsipi_cmd; 1699 struct { 1700 struct scsipi_capacity_list_header header; 1701 struct scsipi_capacity_descriptor desc; 1702 } __attribute__((packed)) scsipi_result; 1703 1704 memset(&scsipi_cmd, 0, sizeof(scsipi_cmd)); 1705 memset(&scsipi_result, 0, sizeof(scsipi_result)); 1706 scsipi_cmd.opcode = READ_FORMAT_CAPACITIES; 1707 _lto2b(sizeof(scsipi_result), scsipi_cmd.length); 1708 error = scsipi_command(sd->sc_periph, (void *)&scsipi_cmd, 1709 sizeof(scsipi_cmd), (void *)&scsipi_result, 1710 sizeof(scsipi_result), SDRETRIES, 20000, 1711 NULL, flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK /*| 1712 XS_CTL_IGNORE_ILLEGAL_REQUEST*/); 1713 if (error || scsipi_result.header.length == 0) 1714 return (SDGP_RESULT_OFFLINE); 1715 1716 #if 0 1717 printf("rfc: length=%d\n", scsipi_result.header.length); 1718 printf("rfc result:"); for (i = sizeof(struct scsipi_capacity_list_header) + scsipi_result.header.length, p = (void *)&scsipi_result; i; i--, p++) printf(" %02x", *p); printf("\n"); 1719 #endif 1720 switch (scsipi_result.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1721 case SCSIPI_CAP_DESC_CODE_RESERVED: 1722 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1723 break; 1724 1725 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1726 return (SDGP_RESULT_UNFORMATTED); 1727 1728 case SCSIPI_CAP_DESC_CODE_NONE: 1729 return (SDGP_RESULT_OFFLINE); 1730 } 1731 1732 dp->disksize = sectors = _4btol(scsipi_result.desc.nblks); 1733 if (sectors == 0) 1734 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1735 1736 dp->blksize = _3btol(scsipi_result.desc.blklen); 1737 if (dp->blksize == 0) 1738 dp->blksize = 512; 1739 } else { 1740 struct sd_mode_sense_data scsipi_sense; 1741 int big, bsize; 1742 struct scsi_blk_desc *bdesc; 1743 1744 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1745 error = sd_mode_sense(sd, 0, &scsipi_sense, 1746 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1747 dp->blksize = 512; 1748 if (!error) { 1749 if (big) { 1750 bdesc = (void *)(&scsipi_sense.header.big + 1); 1751 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1752 } else { 1753 bdesc = (void *)(&scsipi_sense.header.small + 1); 1754 bsize = scsipi_sense.header.small.blk_desc_len; 1755 } 1756 1757 #if 0 1758 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1759 printf("page 0 bsize=%d\n", bsize); 1760 printf("page 0 ok\n"); 1761 #endif 1762 1763 if (bsize >= 8) { 1764 dp->blksize = _3btol(bdesc->blklen); 1765 if (dp->blksize == 0) 1766 dp->blksize = 512; 1767 } 1768 } 1769 } 1770 1771 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1772 return (0); 1773 } 1774 1775 int 1776 sd_get_parms(sd, dp, flags) 1777 struct sd_softc *sd; 1778 struct disk_parms *dp; 1779 int flags; 1780 { 1781 struct sd_mode_sense_data scsipi_sense; 1782 int error; 1783 int big; 1784 union scsi_disk_pages *pages; 1785 #if 0 1786 int i; 1787 u_int8_t *p; 1788 #endif 1789 1790 /* 1791 * If offline, the SDEV_MEDIA_LOADED flag will be 1792 * cleared by the caller if necessary. 1793 */ 1794 if (sd->type == T_SIMPLE_DIRECT) 1795 return (sd_get_simplifiedparms(sd, dp, flags)); 1796 1797 error = sd_get_capacity(sd, dp, flags); 1798 if (error) 1799 return (error); 1800 1801 if (sd->type == T_OPTICAL) 1802 goto page0; 1803 1804 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1805 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1806 sizeof(scsipi_sense.blk_desc) + 1807 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1808 flags | XS_CTL_SILENT, &big); 1809 if (!error) { 1810 if (big) 1811 pages = (void *)(&scsipi_sense.header.big + 1); 1812 else 1813 pages = (void *)(&scsipi_sense.header.small + 1); 1814 1815 #if 0 1816 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1817 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1818 #endif 1819 1820 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1821 goto page5; 1822 1823 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1824 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1825 _3btol(pages->rigid_geometry.ncyl), 1826 pages->rigid_geometry.nheads, 1827 _2btol(pages->rigid_geometry.st_cyl_wp), 1828 _2btol(pages->rigid_geometry.st_cyl_rwc), 1829 _2btol(pages->rigid_geometry.land_zone))); 1830 1831 /* 1832 * KLUDGE!! (for zone recorded disks) 1833 * give a number of sectors so that sec * trks * cyls 1834 * is <= disk_size 1835 * can lead to wasted space! THINK ABOUT THIS ! 1836 */ 1837 dp->heads = pages->rigid_geometry.nheads; 1838 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1839 if (dp->heads == 0 || dp->cyls == 0) 1840 goto page5; 1841 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1842 1843 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1844 if (dp->rot_rate == 0) 1845 dp->rot_rate = 3600; 1846 1847 #if 0 1848 printf("page 4 ok\n"); 1849 #endif 1850 goto blksize; 1851 } 1852 1853 page5: 1854 memset(&scsipi_sense, SMS_DBD, sizeof(scsipi_sense)); 1855 error = sd_mode_sense(sd, 0, &scsipi_sense, 1856 sizeof(scsipi_sense.blk_desc) + 1857 sizeof(scsipi_sense.pages.flex_geometry), 5, 1858 flags | XS_CTL_SILENT, &big); 1859 if (!error) { 1860 if (big) 1861 pages = (void *)(&scsipi_sense.header.big + 1); 1862 else 1863 pages = (void *)(&scsipi_sense.header.small + 1); 1864 1865 #if 0 1866 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1867 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1868 #endif 1869 1870 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1871 goto page0; 1872 1873 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1874 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1875 _3btol(pages->flex_geometry.ncyl), 1876 pages->flex_geometry.nheads, 1877 pages->flex_geometry.ph_sec_tr, 1878 _2btol(pages->flex_geometry.bytes_s))); 1879 1880 dp->heads = pages->flex_geometry.nheads; 1881 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1882 dp->sectors = pages->flex_geometry.ph_sec_tr; 1883 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1884 goto page0; 1885 1886 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1887 if (dp->rot_rate == 0) 1888 dp->rot_rate = 3600; 1889 1890 #if 0 1891 printf("page 5 ok\n"); 1892 #endif 1893 goto blksize; 1894 } 1895 1896 page0: 1897 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1898 /* Try calling driver's method for figuring out geometry. */ 1899 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1900 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1901 (sd->sc_periph, dp, dp->disksize)) { 1902 /* 1903 * Use adaptec standard fictitious geometry 1904 * this depends on which controller (e.g. 1542C is 1905 * different. but we have to put SOMETHING here..) 1906 */ 1907 dp->heads = 64; 1908 dp->sectors = 32; 1909 dp->cyls = dp->disksize / (64 * 32); 1910 } 1911 dp->rot_rate = 3600; 1912 1913 blksize: 1914 return (SDGP_RESULT_OK); 1915 } 1916 1917 int 1918 sd_flush(sd, flags) 1919 struct sd_softc *sd; 1920 int flags; 1921 { 1922 struct scsipi_periph *periph = sd->sc_periph; 1923 struct scsi_synchronize_cache sync_cmd; 1924 1925 /* 1926 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1927 * We issue with address 0 length 0, which should be 1928 * interpreted by the device as "all remaining blocks 1929 * starting at address 0". We ignore ILLEGAL REQUEST 1930 * in the event that the command is not supported by 1931 * the device, and poll for completion so that we know 1932 * that the cache has actually been flushed. 1933 * 1934 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1935 * command, as indicated by our quirks flags. 1936 * 1937 * XXX What about older devices? 1938 */ 1939 if (periph->periph_version >= 2 && 1940 (periph->periph_quirks & PQUIRK_NOSYNCCACHE) == 0) { 1941 sd->flags |= SDF_FLUSHING; 1942 memset(&sync_cmd, 0, sizeof(sync_cmd)); 1943 sync_cmd.opcode = SCSI_SYNCHRONIZE_CACHE; 1944 1945 return(scsipi_command(periph, 1946 (struct scsipi_generic *)&sync_cmd, sizeof(sync_cmd), 1947 NULL, 0, SDRETRIES, 100000, NULL, 1948 flags|XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1949 } else 1950 return(0); 1951 } 1952 1953 int 1954 sd_getcache(sd, bitsp) 1955 struct sd_softc *sd; 1956 int *bitsp; 1957 { 1958 struct scsipi_periph *periph = sd->sc_periph; 1959 struct sd_mode_sense_data scsipi_sense; 1960 int error, bits = 0; 1961 int big; 1962 union scsi_disk_pages *pages; 1963 1964 if (periph->periph_version < 2) 1965 return (EOPNOTSUPP); 1966 1967 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1968 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1969 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 1970 if (error) 1971 return (error); 1972 1973 if (big) 1974 pages = (void *)(&scsipi_sense.header.big + 1); 1975 else 1976 pages = (void *)(&scsipi_sense.header.small + 1); 1977 1978 if ((pages->caching_params.flags & CACHING_RCD) == 0) 1979 bits |= DKCACHE_READ; 1980 if (pages->caching_params.flags & CACHING_WCE) 1981 bits |= DKCACHE_WRITE; 1982 if (pages->caching_params.pg_code & PGCODE_PS) 1983 bits |= DKCACHE_SAVE; 1984 1985 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1986 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1987 sizeof(scsipi_sense.pages.caching_params), 1988 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 1989 if (error == 0) { 1990 if (big) 1991 pages = (void *)(&scsipi_sense.header.big + 1); 1992 else 1993 pages = (void *)(&scsipi_sense.header.small + 1); 1994 1995 if (pages->caching_params.flags & CACHING_RCD) 1996 bits |= DKCACHE_RCHANGE; 1997 if (pages->caching_params.flags & CACHING_WCE) 1998 bits |= DKCACHE_WCHANGE; 1999 } 2000 2001 *bitsp = bits; 2002 2003 return (0); 2004 } 2005 2006 int 2007 sd_setcache(sd, bits) 2008 struct sd_softc *sd; 2009 int bits; 2010 { 2011 struct scsipi_periph *periph = sd->sc_periph; 2012 struct sd_mode_sense_data scsipi_sense; 2013 int error; 2014 uint8_t oflags, byte2 = 0; 2015 int big; 2016 union scsi_disk_pages *pages; 2017 2018 if (periph->periph_version < 2) 2019 return (EOPNOTSUPP); 2020 2021 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2022 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2023 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2024 if (error) 2025 return (error); 2026 2027 if (big) 2028 pages = (void *)(&scsipi_sense.header.big + 1); 2029 else 2030 pages = (void *)(&scsipi_sense.header.small + 1); 2031 2032 oflags = pages->caching_params.flags; 2033 2034 if (bits & DKCACHE_READ) 2035 pages->caching_params.flags &= ~CACHING_RCD; 2036 else 2037 pages->caching_params.flags |= CACHING_RCD; 2038 2039 if (bits & DKCACHE_WRITE) 2040 pages->caching_params.flags |= CACHING_WCE; 2041 else 2042 pages->caching_params.flags &= ~CACHING_WCE; 2043 2044 if (oflags == pages->caching_params.flags) 2045 return (0); 2046 2047 pages->caching_params.pg_code &= PGCODE_MASK; 2048 2049 if (bits & DKCACHE_SAVE) 2050 byte2 |= SMS_SP; 2051 2052 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2053 sizeof(struct scsipi_mode_page_header) + 2054 pages->caching_params.pg_length, 0, big)); 2055 } 2056
Indexes created Mon Sep 22 21:09:42 GMT 2025