sd.c revision 1.232
1 /* $NetBSD: sd.c,v 1.232 2004/12/07 23:16:40 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 1.232 2004/12/07 23:16:40 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/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/errno.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/proc.h> 78 #include <sys/conf.h> 79 #include <sys/vnode.h> 80 #if NRND > 0 81 #include <sys/rnd.h> 82 #endif 83 84 #include <dev/scsipi/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/scsipi_base.h> 90 #include <dev/scsipi/sdvar.h> 91 92 #define SDUNIT(dev) DISKUNIT(dev) 93 #define SDPART(dev) DISKPART(dev) 94 #define SDMINOR(unit, part) DISKMINOR(unit, part) 95 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 96 97 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 98 99 static void sdminphys(struct buf *); 100 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 101 static void sdgetdisklabel(struct sd_softc *); 102 static void sdstart(struct scsipi_periph *); 103 static void sdrestart(void *); 104 static void sddone(struct scsipi_xfer *, int); 105 static void sd_shutdown(void *); 106 static int sd_interpret_sense(struct scsipi_xfer *); 107 108 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 109 int, int *); 110 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 111 int); 112 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 113 int); 114 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 115 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 117 int); 118 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 119 int); 120 121 static int sd_flush(struct sd_softc *, int); 122 static int sd_getcache(struct sd_softc *, int *); 123 static int sd_setcache(struct sd_softc *, int); 124 125 static int sdmatch(struct device *, struct cfdata *, void *); 126 static void sdattach(struct device *, struct device *, void *); 127 static int sdactivate(struct device *, enum devact); 128 static int sddetach(struct device *, int); 129 130 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 131 sdactivate); 132 133 extern struct cfdriver sd_cd; 134 135 static const struct scsipi_inquiry_pattern sd_patterns[] = { 136 {T_DIRECT, T_FIXED, 137 "", "", ""}, 138 {T_DIRECT, T_REMOV, 139 "", "", ""}, 140 {T_OPTICAL, T_FIXED, 141 "", "", ""}, 142 {T_OPTICAL, T_REMOV, 143 "", "", ""}, 144 {T_SIMPLE_DIRECT, T_FIXED, 145 "", "", ""}, 146 {T_SIMPLE_DIRECT, T_REMOV, 147 "", "", ""}, 148 }; 149 150 static dev_type_open(sdopen); 151 static dev_type_close(sdclose); 152 static dev_type_read(sdread); 153 static dev_type_write(sdwrite); 154 static dev_type_ioctl(sdioctl); 155 static dev_type_strategy(sdstrategy); 156 static dev_type_dump(sddump); 157 static dev_type_size(sdsize); 158 159 const struct bdevsw sd_bdevsw = { 160 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 161 }; 162 163 const struct cdevsw sd_cdevsw = { 164 sdopen, sdclose, sdread, sdwrite, sdioctl, 165 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 166 }; 167 168 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 169 170 static const struct scsipi_periphsw sd_switch = { 171 sd_interpret_sense, /* check our error handler first */ 172 sdstart, /* have a queue, served by this */ 173 NULL, /* have no async handler */ 174 sddone, /* deal with stats at interrupt time */ 175 }; 176 177 struct sd_mode_sense_data { 178 /* 179 * XXX 180 * We are not going to parse this as-is -- it just has to be large 181 * enough. 182 */ 183 union { 184 struct scsipi_mode_header small; 185 struct scsipi_mode_header_big big; 186 } header; 187 struct scsi_blk_desc blk_desc; 188 union scsi_disk_pages pages; 189 }; 190 191 /* 192 * The routine called by the low level scsi routine when it discovers 193 * A device suitable for this driver 194 */ 195 static int 196 sdmatch(struct device *parent, struct cfdata *match, void *aux) 197 { 198 struct scsipibus_attach_args *sa = aux; 199 int priority; 200 201 (void)scsipi_inqmatch(&sa->sa_inqbuf, 202 (caddr_t)sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 203 sizeof(sd_patterns[0]), &priority); 204 205 return (priority); 206 } 207 208 /* 209 * Attach routine common to atapi & scsi. 210 */ 211 static void 212 sdattach(struct device *parent, struct device *self, void *aux) 213 { 214 struct sd_softc *sd = (void *)self; 215 struct scsipibus_attach_args *sa = aux; 216 struct scsipi_periph *periph = sa->sa_periph; 217 int error, result; 218 struct disk_parms *dp = &sd->params; 219 char pbuf[9]; 220 221 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 222 223 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 224 if (sd->type == T_SIMPLE_DIRECT) 225 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 226 227 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 228 periph->periph_version == 0) 229 sd->flags |= SDF_ANCIENT; 230 231 bufq_alloc(&sd->buf_queue, 232 BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 233 234 callout_init(&sd->sc_callout); 235 236 /* 237 * Store information needed to contact our base driver 238 */ 239 sd->sc_periph = periph; 240 241 periph->periph_dev = &sd->sc_dev; 242 periph->periph_switch = &sd_switch; 243 244 /* 245 * Increase our openings to the maximum-per-periph 246 * supported by the adapter. This will either be 247 * clamped down or grown by the adapter if necessary. 248 */ 249 periph->periph_openings = 250 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 251 periph->periph_flags |= PERIPH_GROW_OPENINGS; 252 253 /* 254 * Initialize and attach the disk structure. 255 */ 256 sd->sc_dk.dk_driver = &sddkdriver; 257 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 258 disk_attach(&sd->sc_dk); 259 260 /* 261 * Use the subdriver to request information regarding the drive. 262 */ 263 aprint_naive("\n"); 264 aprint_normal("\n"); 265 266 error = scsipi_test_unit_ready(periph, 267 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 268 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 269 270 if (error) 271 result = SDGP_RESULT_OFFLINE; 272 else 273 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 274 aprint_normal("%s: ", sd->sc_dev.dv_xname); 275 switch (result) { 276 case SDGP_RESULT_OK: 277 format_bytes(pbuf, sizeof(pbuf), 278 (u_int64_t)dp->disksize * dp->blksize); 279 aprint_normal( 280 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 281 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 282 (unsigned long long)dp->disksize); 283 break; 284 285 case SDGP_RESULT_OFFLINE: 286 aprint_normal("drive offline"); 287 break; 288 289 case SDGP_RESULT_UNFORMATTED: 290 aprint_normal("unformatted media"); 291 break; 292 293 #ifdef DIAGNOSTIC 294 default: 295 panic("sdattach: unknown result from get_parms"); 296 break; 297 #endif 298 } 299 aprint_normal("\n"); 300 301 /* 302 * Establish a shutdown hook so that we can ensure that 303 * our data has actually made it onto the platter at 304 * shutdown time. Note that this relies on the fact 305 * that the shutdown hook code puts us at the head of 306 * the list (thus guaranteeing that our hook runs before 307 * our ancestors'). 308 */ 309 if ((sd->sc_sdhook = 310 shutdownhook_establish(sd_shutdown, sd)) == NULL) 311 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 312 sd->sc_dev.dv_xname); 313 314 #if NRND > 0 315 /* 316 * attach the device into the random source list 317 */ 318 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 319 RND_TYPE_DISK, 0); 320 #endif 321 322 /* Discover wedges on this disk. */ 323 dkwedge_discover(&sd->sc_dk); 324 } 325 326 static int 327 sdactivate(struct device *self, enum devact act) 328 { 329 int rv = 0; 330 331 switch (act) { 332 case DVACT_ACTIVATE: 333 rv = EOPNOTSUPP; 334 break; 335 336 case DVACT_DEACTIVATE: 337 /* 338 * Nothing to do; we key off the device's DVF_ACTIVE. 339 */ 340 break; 341 } 342 return (rv); 343 } 344 345 static int 346 sddetach(struct device *self, int flags) 347 { 348 struct sd_softc *sd = (struct sd_softc *) self; 349 struct buf *bp; 350 int s, bmaj, cmaj, i, mn; 351 352 /* locate the major number */ 353 bmaj = bdevsw_lookup_major(&sd_bdevsw); 354 cmaj = cdevsw_lookup_major(&sd_cdevsw); 355 356 /* Nuke the vnodes for any open instances */ 357 for (i = 0; i < MAXPARTITIONS; i++) { 358 mn = SDMINOR(self->dv_unit, i); 359 vdevgone(bmaj, mn, mn, VBLK); 360 vdevgone(cmaj, mn, mn, VCHR); 361 } 362 363 /* kill any pending restart */ 364 callout_stop(&sd->sc_callout); 365 366 /* Delete all of our wedges. */ 367 dkwedge_delall(&sd->sc_dk); 368 369 s = splbio(); 370 371 /* Kill off any queued buffers. */ 372 while ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 373 bp->b_error = EIO; 374 bp->b_flags |= B_ERROR; 375 bp->b_resid = bp->b_bcount; 376 biodone(bp); 377 } 378 379 bufq_free(&sd->buf_queue); 380 381 /* Kill off any pending commands. */ 382 scsipi_kill_pending(sd->sc_periph); 383 384 splx(s); 385 386 /* Detach from the disk list. */ 387 disk_detach(&sd->sc_dk); 388 389 /* Get rid of the shutdown hook. */ 390 shutdownhook_disestablish(sd->sc_sdhook); 391 392 #if NRND > 0 393 /* Unhook the entropy source. */ 394 rnd_detach_source(&sd->rnd_source); 395 #endif 396 397 return (0); 398 } 399 400 /* 401 * open the device. Make sure the partition info is a up-to-date as can be. 402 */ 403 static int 404 sdopen(dev_t dev, int flag, int fmt, struct proc *p) 405 { 406 struct sd_softc *sd; 407 struct scsipi_periph *periph; 408 struct scsipi_adapter *adapt; 409 int unit, part; 410 int error; 411 412 unit = SDUNIT(dev); 413 if (unit >= sd_cd.cd_ndevs) 414 return (ENXIO); 415 sd = sd_cd.cd_devs[unit]; 416 if (sd == NULL) 417 return (ENXIO); 418 419 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 420 return (ENODEV); 421 422 part = SDPART(dev); 423 424 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 425 return (error); 426 427 /* 428 * If there are wedges, and this is not RAW_PART, then we 429 * need to fail. 430 */ 431 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 432 error = EBUSY; 433 goto bad1; 434 } 435 436 periph = sd->sc_periph; 437 adapt = periph->periph_channel->chan_adapter; 438 439 SC_DEBUG(periph, SCSIPI_DB1, 440 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 441 sd_cd.cd_ndevs, part)); 442 443 /* 444 * If this is the first open of this device, add a reference 445 * to the adapter. 446 */ 447 if (sd->sc_dk.dk_openmask == 0 && 448 (error = scsipi_adapter_addref(adapt)) != 0) 449 goto bad1; 450 451 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 452 /* 453 * If any partition is open, but the disk has been invalidated, 454 * disallow further opens of non-raw partition 455 */ 456 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 457 (part != RAW_PART || fmt != S_IFCHR)) { 458 error = EIO; 459 goto bad2; 460 } 461 } else { 462 int silent; 463 464 if (part == RAW_PART && fmt == S_IFCHR) 465 silent = XS_CTL_SILENT; 466 else 467 silent = 0; 468 469 /* Check that it is still responding and ok. */ 470 error = scsipi_test_unit_ready(periph, 471 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 472 silent); 473 474 /* 475 * Start the pack spinning if necessary. Always allow the 476 * raw parition to be opened, for raw IOCTLs. Data transfers 477 * will check for SDEV_MEDIA_LOADED. 478 */ 479 if (error == EIO) { 480 int error2; 481 482 error2 = scsipi_start(periph, SSS_START, silent); 483 switch (error2) { 484 case 0: 485 error = 0; 486 break; 487 case EIO: 488 case EINVAL: 489 break; 490 default: 491 error = error2; 492 break; 493 } 494 } 495 if (error) { 496 if (silent) 497 goto out; 498 goto bad2; 499 } 500 501 periph->periph_flags |= PERIPH_OPEN; 502 503 if (periph->periph_flags & PERIPH_REMOVABLE) { 504 /* Lock the pack in. */ 505 error = scsipi_prevent(periph, PR_PREVENT, 506 XS_CTL_IGNORE_ILLEGAL_REQUEST | 507 XS_CTL_IGNORE_MEDIA_CHANGE); 508 if (error) 509 goto bad3; 510 } 511 512 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 513 int param_error; 514 periph->periph_flags |= PERIPH_MEDIA_LOADED; 515 516 /* 517 * Load the physical device parameters. 518 * 519 * Note that if media is present but unformatted, 520 * we allow the open (so that it can be formatted!). 521 * The drive should refuse real I/O, if the media is 522 * unformatted. 523 */ 524 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 525 == SDGP_RESULT_OFFLINE) { 526 error = ENXIO; 527 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 528 goto bad3; 529 } 530 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 531 532 /* Load the partition info if not already loaded. */ 533 if (param_error == 0) { 534 sdgetdisklabel(sd); 535 SC_DEBUG(periph, SCSIPI_DB3, 536 ("Disklabel loaded ")); 537 } 538 } 539 } 540 541 /* Check that the partition exists. */ 542 if (part != RAW_PART && 543 (part >= sd->sc_dk.dk_label->d_npartitions || 544 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 545 error = ENXIO; 546 goto bad3; 547 } 548 549 out: /* Insure only one open at a time. */ 550 switch (fmt) { 551 case S_IFCHR: 552 sd->sc_dk.dk_copenmask |= (1 << part); 553 break; 554 case S_IFBLK: 555 sd->sc_dk.dk_bopenmask |= (1 << part); 556 break; 557 } 558 sd->sc_dk.dk_openmask = 559 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 560 561 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 562 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 563 return (0); 564 565 bad3: 566 if (sd->sc_dk.dk_openmask == 0) { 567 if (periph->periph_flags & PERIPH_REMOVABLE) 568 scsipi_prevent(periph, PR_ALLOW, 569 XS_CTL_IGNORE_ILLEGAL_REQUEST | 570 XS_CTL_IGNORE_MEDIA_CHANGE); 571 periph->periph_flags &= ~PERIPH_OPEN; 572 } 573 574 bad2: 575 if (sd->sc_dk.dk_openmask == 0) 576 scsipi_adapter_delref(adapt); 577 578 bad1: 579 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 580 return (error); 581 } 582 583 /* 584 * close the device.. only called if we are the LAST occurence of an open 585 * device. Convenient now but usually a pain. 586 */ 587 static int 588 sdclose(dev_t dev, int flag, int fmt, struct proc *p) 589 { 590 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 591 struct scsipi_periph *periph = sd->sc_periph; 592 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 593 int part = SDPART(dev); 594 int error; 595 596 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 597 return (error); 598 599 switch (fmt) { 600 case S_IFCHR: 601 sd->sc_dk.dk_copenmask &= ~(1 << part); 602 break; 603 case S_IFBLK: 604 sd->sc_dk.dk_bopenmask &= ~(1 << part); 605 break; 606 } 607 sd->sc_dk.dk_openmask = 608 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 609 610 if (sd->sc_dk.dk_openmask == 0) { 611 /* 612 * If the disk cache needs flushing, and the disk supports 613 * it, do it now. 614 */ 615 if ((sd->flags & SDF_DIRTY) != 0) { 616 if (sd_flush(sd, 0)) { 617 printf("%s: cache synchronization failed\n", 618 sd->sc_dev.dv_xname); 619 sd->flags &= ~SDF_FLUSHING; 620 } else 621 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 622 } 623 624 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 625 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 626 627 scsipi_wait_drain(periph); 628 629 if (periph->periph_flags & PERIPH_REMOVABLE) 630 scsipi_prevent(periph, PR_ALLOW, 631 XS_CTL_IGNORE_ILLEGAL_REQUEST | 632 XS_CTL_IGNORE_NOT_READY); 633 periph->periph_flags &= ~PERIPH_OPEN; 634 635 scsipi_wait_drain(periph); 636 637 scsipi_adapter_delref(adapt); 638 } 639 640 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 641 return (0); 642 } 643 644 /* 645 * Actually translate the requested transfer into one the physical driver 646 * can understand. The transfer is described by a buf and will include 647 * only one physical transfer. 648 */ 649 static void 650 sdstrategy(struct buf *bp) 651 { 652 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 653 struct scsipi_periph *periph = sd->sc_periph; 654 struct disklabel *lp; 655 daddr_t blkno; 656 int s; 657 boolean_t sector_aligned; 658 659 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 660 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 661 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 662 /* 663 * If the device has been made invalid, error out 664 */ 665 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 666 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 667 if (periph->periph_flags & PERIPH_OPEN) 668 bp->b_error = EIO; 669 else 670 bp->b_error = ENODEV; 671 goto bad; 672 } 673 674 lp = sd->sc_dk.dk_label; 675 676 /* 677 * The transfer must be a whole number of blocks, offset must not be 678 * negative. 679 */ 680 if (lp->d_secsize == DEV_BSIZE) { 681 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 682 } else { 683 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 684 } 685 if (!sector_aligned || bp->b_blkno < 0) { 686 bp->b_error = EINVAL; 687 goto bad; 688 } 689 /* 690 * If it's a null transfer, return immediatly 691 */ 692 if (bp->b_bcount == 0) 693 goto done; 694 695 /* 696 * Do bounds checking, adjust transfer. if error, process. 697 * If end of partition, just return. 698 */ 699 if (SDPART(bp->b_dev) == RAW_PART) { 700 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 701 sd->params.disksize512) <= 0) 702 goto done; 703 } else { 704 if (bounds_check_with_label(&sd->sc_dk, bp, 705 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 706 goto done; 707 } 708 709 /* 710 * Now convert the block number to absolute and put it in 711 * terms of the device's logical block size. 712 */ 713 if (lp->d_secsize == DEV_BSIZE) 714 blkno = bp->b_blkno; 715 else if (lp->d_secsize > DEV_BSIZE) 716 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 717 else 718 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 719 720 if (SDPART(bp->b_dev) != RAW_PART) 721 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 722 723 bp->b_rawblkno = blkno; 724 725 s = splbio(); 726 727 /* 728 * Place it in the queue of disk activities for this disk. 729 * 730 * XXX Only do disksort() if the current operating mode does not 731 * XXX include tagged queueing. 732 */ 733 BUFQ_PUT(&sd->buf_queue, bp); 734 735 /* 736 * Tell the device to get going on the transfer if it's 737 * not doing anything, otherwise just wait for completion 738 */ 739 sdstart(sd->sc_periph); 740 741 splx(s); 742 return; 743 744 bad: 745 bp->b_flags |= B_ERROR; 746 done: 747 /* 748 * Correctly set the buf to indicate a completed xfer 749 */ 750 bp->b_resid = bp->b_bcount; 751 biodone(bp); 752 } 753 754 /* 755 * sdstart looks to see if there is a buf waiting for the device 756 * and that the device is not already busy. If both are true, 757 * It dequeues the buf and creates a scsi command to perform the 758 * transfer in the buf. The transfer request will call scsipi_done 759 * on completion, which will in turn call this routine again 760 * so that the next queued transfer is performed. 761 * The bufs are queued by the strategy routine (sdstrategy) 762 * 763 * This routine is also called after other non-queued requests 764 * have been made of the scsi driver, to ensure that the queue 765 * continues to be drained. 766 * 767 * must be called at the correct (highish) spl level 768 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 769 */ 770 static void 771 sdstart(struct scsipi_periph *periph) 772 { 773 struct sd_softc *sd = (void *)periph->periph_dev; 774 struct disklabel *lp = sd->sc_dk.dk_label; 775 struct buf *bp = 0; 776 struct scsipi_rw_16 cmd16; 777 struct scsipi_rw_10 cmd_big; 778 struct scsi_rw_6 cmd_small; 779 struct scsipi_generic *cmdp; 780 struct scsipi_xfer *xs; 781 int nblks, cmdlen, error, flags; 782 783 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 784 /* 785 * Check if the device has room for another command 786 */ 787 while (periph->periph_active < periph->periph_openings) { 788 /* 789 * there is excess capacity, but a special waits 790 * It'll need the adapter as soon as we clear out of the 791 * way and let it run (user level wait). 792 */ 793 if (periph->periph_flags & PERIPH_WAITING) { 794 periph->periph_flags &= ~PERIPH_WAITING; 795 wakeup((caddr_t)periph); 796 return; 797 } 798 799 /* 800 * If the device has become invalid, abort all the 801 * reads and writes until all files have been closed and 802 * re-opened 803 */ 804 if (__predict_false( 805 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 806 if ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 807 bp->b_error = EIO; 808 bp->b_flags |= B_ERROR; 809 bp->b_resid = bp->b_bcount; 810 biodone(bp); 811 continue; 812 } else { 813 return; 814 } 815 } 816 817 /* 818 * See if there is a buf with work for us to do.. 819 */ 820 if ((bp = BUFQ_PEEK(&sd->buf_queue)) == NULL) 821 return; 822 823 /* 824 * We have a buf, now we should make a command. 825 */ 826 827 if (lp->d_secsize == DEV_BSIZE) 828 nblks = bp->b_bcount >> DEV_BSHIFT; 829 else 830 nblks = howmany(bp->b_bcount, lp->d_secsize); 831 832 /* 833 * Fill out the scsi command. Use the smallest CDB possible 834 * (6-byte, 10-byte, or 16-byte). 835 */ 836 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 837 ((nblks & 0xff) == nblks) && 838 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 839 /* 6-byte CDB */ 840 memset(&cmd_small, 0, sizeof(cmd_small)); 841 cmd_small.opcode = (bp->b_flags & B_READ) ? 842 SCSI_READ_6_COMMAND : SCSI_WRITE_6_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 if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 848 /* 10-byte CDB */ 849 memset(&cmd_big, 0, sizeof(cmd_big)); 850 cmd_big.opcode = (bp->b_flags & B_READ) ? 851 READ_10 : WRITE_10; 852 _lto4b(bp->b_rawblkno, cmd_big.addr); 853 _lto2b(nblks, cmd_big.length); 854 cmdlen = sizeof(cmd_big); 855 cmdp = (struct scsipi_generic *)&cmd_big; 856 } else { 857 /* 16-byte CDB */ 858 memset(&cmd16, 0, sizeof(cmd16)); 859 cmd16.opcode = (bp->b_flags & B_READ) ? 860 READ_16 : WRITE_16; 861 _lto8b(bp->b_rawblkno, cmd16.addr); 862 _lto4b(nblks, cmd16.length); 863 cmdlen = sizeof(cmd16); 864 cmdp = (struct scsipi_generic *)&cmd16; 865 } 866 867 /* Instrumentation. */ 868 disk_busy(&sd->sc_dk); 869 870 /* 871 * Mark the disk dirty so that the cache will be 872 * flushed on close. 873 */ 874 if ((bp->b_flags & B_READ) == 0) 875 sd->flags |= SDF_DIRTY; 876 877 /* 878 * Figure out what flags to use. 879 */ 880 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 881 if (bp->b_flags & B_READ) 882 flags |= XS_CTL_DATA_IN; 883 else 884 flags |= XS_CTL_DATA_OUT; 885 886 /* 887 * Call the routine that chats with the adapter. 888 * Note: we cannot sleep as we may be an interrupt 889 */ 890 xs = scsipi_make_xs(periph, cmdp, cmdlen, 891 (u_char *)bp->b_data, bp->b_bcount, 892 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 893 if (__predict_false(xs == NULL)) { 894 /* 895 * out of memory. Keep this buffer in the queue, and 896 * retry later. 897 */ 898 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 899 periph); 900 return; 901 } 902 /* 903 * need to dequeue the buffer before queuing the command, 904 * because cdstart may be called recursively from the 905 * HBA driver 906 */ 907 #ifdef DIAGNOSTIC 908 if (BUFQ_GET(&sd->buf_queue) != bp) 909 panic("sdstart(): dequeued wrong buf"); 910 #else 911 BUFQ_GET(&sd->buf_queue); 912 #endif 913 error = scsipi_execute_xs(xs); 914 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 915 KASSERT(error == 0); 916 } 917 } 918 919 static void 920 sdrestart(void *v) 921 { 922 int s = splbio(); 923 sdstart((struct scsipi_periph *)v); 924 splx(s); 925 } 926 927 static void 928 sddone(struct scsipi_xfer *xs, int error) 929 { 930 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 931 struct buf *bp = xs->bp; 932 933 if (sd->flags & SDF_FLUSHING) { 934 /* Flush completed, no longer dirty. */ 935 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 936 } 937 938 if (bp) { 939 bp->b_error = error; 940 bp->b_resid = xs->resid; 941 if (error) 942 bp->b_flags |= B_ERROR; 943 944 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 945 (bp->b_flags & B_READ)); 946 #if NRND > 0 947 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 948 #endif 949 950 biodone(bp); 951 } 952 } 953 954 static void 955 sdminphys(struct buf *bp) 956 { 957 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 958 long max; 959 960 /* 961 * If the device is ancient, we want to make sure that 962 * the transfer fits into a 6-byte cdb. 963 * 964 * XXX Note that the SCSI-I spec says that 256-block transfers 965 * are allowed in a 6-byte read/write, and are specified 966 * by settng the "length" to 0. However, we're conservative 967 * here, allowing only 255-block transfers in case an 968 * ancient device gets confused by length == 0. A length of 0 969 * in a 10-byte read/write actually means 0 blocks. 970 */ 971 if ((sd->flags & SDF_ANCIENT) && 972 ((sd->sc_periph->periph_flags & 973 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 974 max = sd->sc_dk.dk_label->d_secsize * 0xff; 975 976 if (bp->b_bcount > max) 977 bp->b_bcount = max; 978 } 979 980 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 981 } 982 983 static int 984 sdread(dev_t dev, struct uio *uio, int ioflag) 985 { 986 987 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 988 } 989 990 static int 991 sdwrite(dev_t dev, struct uio *uio, int ioflag) 992 { 993 994 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 995 } 996 997 /* 998 * Perform special action on behalf of the user 999 * Knows about the internals of this device 1000 */ 1001 static int 1002 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 1003 { 1004 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1005 struct scsipi_periph *periph = sd->sc_periph; 1006 int part = SDPART(dev); 1007 int error = 0; 1008 #ifdef __HAVE_OLD_DISKLABEL 1009 struct disklabel *newlabel = NULL; 1010 #endif 1011 1012 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1013 1014 /* 1015 * If the device is not valid, some IOCTLs can still be 1016 * handled on the raw partition. Check this here. 1017 */ 1018 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1019 switch (cmd) { 1020 case DIOCKLABEL: 1021 case DIOCWLABEL: 1022 case DIOCLOCK: 1023 case DIOCEJECT: 1024 case ODIOCEJECT: 1025 case DIOCGCACHE: 1026 case DIOCSCACHE: 1027 case SCIOCIDENTIFY: 1028 case OSCIOCIDENTIFY: 1029 case SCIOCCOMMAND: 1030 case SCIOCDEBUG: 1031 if (part == RAW_PART) 1032 break; 1033 /* FALLTHROUGH */ 1034 default: 1035 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1036 return (ENODEV); 1037 else 1038 return (EIO); 1039 } 1040 } 1041 1042 switch (cmd) { 1043 case DIOCGDINFO: 1044 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1045 return (0); 1046 1047 #ifdef __HAVE_OLD_DISKLABEL 1048 case ODIOCGDINFO: 1049 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1050 if (newlabel == NULL) 1051 return EIO; 1052 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1053 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1054 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1055 else 1056 error = ENOTTY; 1057 free(newlabel, M_TEMP); 1058 return error; 1059 #endif 1060 1061 case DIOCGPART: 1062 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1063 ((struct partinfo *)addr)->part = 1064 &sd->sc_dk.dk_label->d_partitions[part]; 1065 return (0); 1066 1067 case DIOCWDINFO: 1068 case DIOCSDINFO: 1069 #ifdef __HAVE_OLD_DISKLABEL 1070 case ODIOCWDINFO: 1071 case ODIOCSDINFO: 1072 #endif 1073 { 1074 struct disklabel *lp; 1075 1076 if ((flag & FWRITE) == 0) 1077 return (EBADF); 1078 1079 #ifdef __HAVE_OLD_DISKLABEL 1080 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1081 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1082 if (newlabel == NULL) 1083 return EIO; 1084 memset(newlabel, 0, sizeof newlabel); 1085 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1086 lp = newlabel; 1087 } else 1088 #endif 1089 lp = (struct disklabel *)addr; 1090 1091 if ((error = lockmgr(&sd->sc_dk.dk_openlock, 1092 LK_EXCLUSIVE, NULL)) != 0) 1093 goto bad; 1094 sd->flags |= SDF_LABELLING; 1095 1096 error = setdisklabel(sd->sc_dk.dk_label, 1097 lp, /*sd->sc_dk.dk_openmask : */0, 1098 sd->sc_dk.dk_cpulabel); 1099 if (error == 0) { 1100 if (cmd == DIOCWDINFO 1101 #ifdef __HAVE_OLD_DISKLABEL 1102 || cmd == ODIOCWDINFO 1103 #endif 1104 ) 1105 error = writedisklabel(SDLABELDEV(dev), 1106 sdstrategy, sd->sc_dk.dk_label, 1107 sd->sc_dk.dk_cpulabel); 1108 } 1109 1110 sd->flags &= ~SDF_LABELLING; 1111 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1112 bad: 1113 #ifdef __HAVE_OLD_DISKLABEL 1114 if (newlabel != NULL) 1115 free(newlabel, M_TEMP); 1116 #endif 1117 return (error); 1118 } 1119 1120 case DIOCKLABEL: 1121 if (*(int *)addr) 1122 periph->periph_flags |= PERIPH_KEEP_LABEL; 1123 else 1124 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1125 return (0); 1126 1127 case DIOCWLABEL: 1128 if ((flag & FWRITE) == 0) 1129 return (EBADF); 1130 if (*(int *)addr) 1131 sd->flags |= SDF_WLABEL; 1132 else 1133 sd->flags &= ~SDF_WLABEL; 1134 return (0); 1135 1136 case DIOCLOCK: 1137 return (scsipi_prevent(periph, 1138 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1139 1140 case DIOCEJECT: 1141 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1142 return (ENOTTY); 1143 if (*(int *)addr == 0) { 1144 /* 1145 * Don't force eject: check that we are the only 1146 * partition open. If so, unlock it. 1147 */ 1148 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1149 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1150 sd->sc_dk.dk_openmask) { 1151 error = scsipi_prevent(periph, PR_ALLOW, 1152 XS_CTL_IGNORE_NOT_READY); 1153 if (error) 1154 return (error); 1155 } else { 1156 return (EBUSY); 1157 } 1158 } 1159 /* FALLTHROUGH */ 1160 case ODIOCEJECT: 1161 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1162 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1163 1164 case DIOCGDEFLABEL: 1165 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1166 return (0); 1167 1168 #ifdef __HAVE_OLD_DISKLABEL 1169 case ODIOCGDEFLABEL: 1170 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1171 if (newlabel == NULL) 1172 return EIO; 1173 sdgetdefaultlabel(sd, newlabel); 1174 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1175 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1176 else 1177 error = ENOTTY; 1178 free(newlabel, M_TEMP); 1179 return error; 1180 #endif 1181 1182 case DIOCGCACHE: 1183 return (sd_getcache(sd, (int *) addr)); 1184 1185 case DIOCSCACHE: 1186 if ((flag & FWRITE) == 0) 1187 return (EBADF); 1188 return (sd_setcache(sd, *(int *) addr)); 1189 1190 case DIOCCACHESYNC: 1191 /* 1192 * XXX Do we really need to care about having a writable 1193 * file descriptor here? 1194 */ 1195 if ((flag & FWRITE) == 0) 1196 return (EBADF); 1197 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1198 error = sd_flush(sd, 0); 1199 if (error) 1200 sd->flags &= ~SDF_FLUSHING; 1201 else 1202 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1203 } else 1204 error = 0; 1205 return (error); 1206 1207 case DIOCAWEDGE: 1208 { 1209 struct dkwedge_info *dkw = (void *) addr; 1210 1211 if ((flag & FWRITE) == 0) 1212 return (EBADF); 1213 1214 /* If the ioctl happens here, the parent is us. */ 1215 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1216 return (dkwedge_add(dkw)); 1217 } 1218 1219 case DIOCDWEDGE: 1220 { 1221 struct dkwedge_info *dkw = (void *) addr; 1222 1223 if ((flag & FWRITE) == 0) 1224 return (EBADF); 1225 1226 /* If the ioctl happens here, the parent is us. */ 1227 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1228 return (dkwedge_del(dkw)); 1229 } 1230 1231 case DIOCLWEDGES: 1232 { 1233 struct dkwedge_list *dkwl = (void *) addr; 1234 1235 return (dkwedge_list(&sd->sc_dk, dkwl, p)); 1236 } 1237 1238 default: 1239 if (part != RAW_PART) 1240 return (ENOTTY); 1241 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1242 } 1243 1244 #ifdef DIAGNOSTIC 1245 panic("sdioctl: impossible"); 1246 #endif 1247 } 1248 1249 static void 1250 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1251 { 1252 1253 memset(lp, 0, sizeof(struct disklabel)); 1254 1255 lp->d_secsize = sd->params.blksize; 1256 lp->d_ntracks = sd->params.heads; 1257 lp->d_nsectors = sd->params.sectors; 1258 lp->d_ncylinders = sd->params.cyls; 1259 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1260 1261 switch (scsipi_periph_bustype(sd->sc_periph)) { 1262 case SCSIPI_BUSTYPE_SCSI: 1263 lp->d_type = DTYPE_SCSI; 1264 break; 1265 case SCSIPI_BUSTYPE_ATAPI: 1266 lp->d_type = DTYPE_ATAPI; 1267 break; 1268 } 1269 /* 1270 * XXX 1271 * We could probe the mode pages to figure out what kind of disc it is. 1272 * Is this worthwhile? 1273 */ 1274 strncpy(lp->d_typename, "mydisk", 16); 1275 strncpy(lp->d_packname, "fictitious", 16); 1276 lp->d_secperunit = sd->params.disksize; 1277 lp->d_rpm = sd->params.rot_rate; 1278 lp->d_interleave = 1; 1279 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1280 D_REMOVABLE : 0; 1281 1282 lp->d_partitions[RAW_PART].p_offset = 0; 1283 lp->d_partitions[RAW_PART].p_size = 1284 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1285 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1286 lp->d_npartitions = RAW_PART + 1; 1287 1288 lp->d_magic = DISKMAGIC; 1289 lp->d_magic2 = DISKMAGIC; 1290 lp->d_checksum = dkcksum(lp); 1291 } 1292 1293 1294 /* 1295 * Load the label information on the named device 1296 */ 1297 static void 1298 sdgetdisklabel(struct sd_softc *sd) 1299 { 1300 struct disklabel *lp = sd->sc_dk.dk_label; 1301 const char *errstring; 1302 1303 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1304 1305 sdgetdefaultlabel(sd, lp); 1306 1307 if (lp->d_secpercyl == 0) { 1308 lp->d_secpercyl = 100; 1309 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1310 } 1311 1312 /* 1313 * Call the generic disklabel extraction routine 1314 */ 1315 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1316 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1317 if (errstring) { 1318 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1319 return; 1320 } 1321 } 1322 1323 static void 1324 sd_shutdown(void *arg) 1325 { 1326 struct sd_softc *sd = arg; 1327 1328 /* 1329 * If the disk cache needs to be flushed, and the disk supports 1330 * it, flush it. We're cold at this point, so we poll for 1331 * completion. 1332 */ 1333 if ((sd->flags & SDF_DIRTY) != 0) { 1334 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1335 printf("%s: cache synchronization failed\n", 1336 sd->sc_dev.dv_xname); 1337 sd->flags &= ~SDF_FLUSHING; 1338 } else 1339 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1340 } 1341 } 1342 1343 /* 1344 * Check Errors 1345 */ 1346 static int 1347 sd_interpret_sense(struct scsipi_xfer *xs) 1348 { 1349 struct scsipi_periph *periph = xs->xs_periph; 1350 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1351 struct sd_softc *sd = (void *)periph->periph_dev; 1352 int s, error, retval = EJUSTRETURN; 1353 1354 /* 1355 * If the periph is already recovering, just do the normal 1356 * error processing. 1357 */ 1358 if (periph->periph_flags & PERIPH_RECOVERING) 1359 return (retval); 1360 1361 /* 1362 * If the device is not open yet, let the generic code handle it. 1363 */ 1364 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1365 return (retval); 1366 1367 /* 1368 * If it isn't a extended or extended/deferred error, let 1369 * the generic code handle it. 1370 */ 1371 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1372 (sense->error_code & SSD_ERRCODE) != 0x71) 1373 return (retval); 1374 1375 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1376 sense->add_sense_code == 0x4) { 1377 if (sense->add_sense_code_qual == 0x01) { 1378 /* 1379 * Unit In The Process Of Becoming Ready. 1380 */ 1381 printf("%s: waiting for pack to spin up...\n", 1382 sd->sc_dev.dv_xname); 1383 if (!callout_pending(&periph->periph_callout)) 1384 scsipi_periph_freeze(periph, 1); 1385 callout_reset(&periph->periph_callout, 1386 5 * hz, scsipi_periph_timed_thaw, periph); 1387 retval = ERESTART; 1388 } else if (sense->add_sense_code_qual == 0x02) { 1389 printf("%s: pack is stopped, restarting...\n", 1390 sd->sc_dev.dv_xname); 1391 s = splbio(); 1392 periph->periph_flags |= PERIPH_RECOVERING; 1393 splx(s); 1394 error = scsipi_start(periph, SSS_START, 1395 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1396 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1397 if (error) { 1398 printf("%s: unable to restart pack\n", 1399 sd->sc_dev.dv_xname); 1400 retval = error; 1401 } else 1402 retval = ERESTART; 1403 s = splbio(); 1404 periph->periph_flags &= ~PERIPH_RECOVERING; 1405 splx(s); 1406 } 1407 } 1408 if ((sense->flags & SSD_KEY) == SKEY_MEDIUM_ERROR && 1409 sense->add_sense_code == 0x31 && 1410 sense->add_sense_code_qual == 0x00) { /* maybe for any asq ? */ 1411 /* Medium Format Corrupted */ 1412 retval = EFTYPE; 1413 } 1414 return (retval); 1415 } 1416 1417 1418 static int 1419 sdsize(dev_t dev) 1420 { 1421 struct sd_softc *sd; 1422 int part, unit, omask; 1423 int size; 1424 1425 unit = SDUNIT(dev); 1426 if (unit >= sd_cd.cd_ndevs) 1427 return (-1); 1428 sd = sd_cd.cd_devs[unit]; 1429 if (sd == NULL) 1430 return (-1); 1431 1432 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1433 return (-1); 1434 1435 part = SDPART(dev); 1436 omask = sd->sc_dk.dk_openmask & (1 << part); 1437 1438 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1439 return (-1); 1440 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1441 size = -1; 1442 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1443 size = -1; 1444 else 1445 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1446 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1447 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1448 return (-1); 1449 return (size); 1450 } 1451 1452 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1453 static struct scsipi_xfer sx; 1454 static int sddoingadump; 1455 1456 /* 1457 * dump all of physical memory into the partition specified, starting 1458 * at offset 'dumplo' into the partition. 1459 */ 1460 static int 1461 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1462 { 1463 struct sd_softc *sd; /* disk unit to do the I/O */ 1464 struct disklabel *lp; /* disk's disklabel */ 1465 int unit, part; 1466 int sectorsize; /* size of a disk sector */ 1467 int nsects; /* number of sectors in partition */ 1468 int sectoff; /* sector offset of partition */ 1469 int totwrt; /* total number of sectors left to write */ 1470 int nwrt; /* current number of sectors to write */ 1471 struct scsipi_rw_10 cmd; /* write command */ 1472 struct scsipi_xfer *xs; /* ... convenience */ 1473 struct scsipi_periph *periph; 1474 struct scsipi_channel *chan; 1475 1476 /* Check if recursive dump; if so, punt. */ 1477 if (sddoingadump) 1478 return (EFAULT); 1479 1480 /* Mark as active early. */ 1481 sddoingadump = 1; 1482 1483 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1484 part = SDPART(dev); 1485 1486 /* Check for acceptable drive number. */ 1487 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1488 return (ENXIO); 1489 1490 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1491 return (ENODEV); 1492 1493 periph = sd->sc_periph; 1494 chan = periph->periph_channel; 1495 1496 /* Make sure it was initialized. */ 1497 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1498 return (ENXIO); 1499 1500 /* Convert to disk sectors. Request must be a multiple of size. */ 1501 lp = sd->sc_dk.dk_label; 1502 sectorsize = lp->d_secsize; 1503 if ((size % sectorsize) != 0) 1504 return (EFAULT); 1505 totwrt = size / sectorsize; 1506 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1507 1508 nsects = lp->d_partitions[part].p_size; 1509 sectoff = lp->d_partitions[part].p_offset; 1510 1511 /* Check transfer bounds against partition size. */ 1512 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1513 return (EINVAL); 1514 1515 /* Offset block number to start of partition. */ 1516 blkno += sectoff; 1517 1518 xs = &sx; 1519 1520 while (totwrt > 0) { 1521 nwrt = totwrt; /* XXX */ 1522 #ifndef SD_DUMP_NOT_TRUSTED 1523 /* 1524 * Fill out the scsi command 1525 */ 1526 memset(&cmd, 0, sizeof(cmd)); 1527 cmd.opcode = WRITE_10; 1528 _lto4b(blkno, cmd.addr); 1529 _lto2b(nwrt, cmd.length); 1530 /* 1531 * Fill out the scsipi_xfer structure 1532 * Note: we cannot sleep as we may be an interrupt 1533 * don't use scsipi_command() as it may want to wait 1534 * for an xs. 1535 */ 1536 memset(xs, 0, sizeof(sx)); 1537 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1538 XS_CTL_DATA_OUT; 1539 xs->xs_status = 0; 1540 xs->xs_periph = periph; 1541 xs->xs_retries = SDRETRIES; 1542 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1543 xs->cmd = (struct scsipi_generic *)&cmd; 1544 xs->cmdlen = sizeof(cmd); 1545 xs->resid = nwrt * sectorsize; 1546 xs->error = XS_NOERROR; 1547 xs->bp = 0; 1548 xs->data = va; 1549 xs->datalen = nwrt * sectorsize; 1550 1551 /* 1552 * Pass all this info to the scsi driver. 1553 */ 1554 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1555 if ((xs->xs_status & XS_STS_DONE) == 0 || 1556 xs->error != XS_NOERROR) 1557 return (EIO); 1558 #else /* SD_DUMP_NOT_TRUSTED */ 1559 /* Let's just talk about this first... */ 1560 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1561 delay(500 * 1000); /* half a second */ 1562 #endif /* SD_DUMP_NOT_TRUSTED */ 1563 1564 /* update block count */ 1565 totwrt -= nwrt; 1566 blkno += nwrt; 1567 va += sectorsize * nwrt; 1568 } 1569 sddoingadump = 0; 1570 return (0); 1571 } 1572 1573 static int 1574 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1575 int page, int flags, int *big) 1576 { 1577 1578 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1579 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1580 *big = 1; 1581 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1582 size + sizeof(struct scsipi_mode_header_big), 1583 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1584 } else { 1585 *big = 0; 1586 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1587 size + sizeof(struct scsipi_mode_header), 1588 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1589 } 1590 } 1591 1592 static int 1593 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1594 int flags, int big) 1595 { 1596 1597 if (big) { 1598 struct scsipi_mode_header_big *header = sense; 1599 1600 _lto2b(0, header->data_length); 1601 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1602 size + sizeof(struct scsipi_mode_header_big), 1603 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1604 } else { 1605 struct scsipi_mode_header *header = sense; 1606 1607 header->data_length = 0; 1608 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1609 size + sizeof(struct scsipi_mode_header), 1610 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1611 } 1612 } 1613 1614 static int 1615 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1616 { 1617 struct { 1618 struct scsipi_mode_header header; 1619 /* no block descriptor */ 1620 u_int8_t pg_code; /* page code (should be 6) */ 1621 u_int8_t pg_length; /* page length (should be 11) */ 1622 u_int8_t wcd; /* bit0: cache disable */ 1623 u_int8_t lbs[2]; /* logical block size */ 1624 u_int8_t size[5]; /* number of log. blocks */ 1625 u_int8_t pp; /* power/performance */ 1626 u_int8_t flags; 1627 u_int8_t resvd; 1628 } scsipi_sense; 1629 u_int64_t sectors; 1630 int error; 1631 1632 /* 1633 * scsipi_size (ie "read capacity") and mode sense page 6 1634 * give the same information. Do both for now, and check 1635 * for consistency. 1636 * XXX probably differs for removable media 1637 */ 1638 dp->blksize = 512; 1639 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1640 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1641 1642 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1643 &scsipi_sense.header, sizeof(scsipi_sense), 1644 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1645 1646 if (error != 0) 1647 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1648 1649 dp->blksize = _2btol(scsipi_sense.lbs); 1650 if (dp->blksize == 0) 1651 dp->blksize = 512; 1652 1653 /* 1654 * Create a pseudo-geometry. 1655 */ 1656 dp->heads = 64; 1657 dp->sectors = 32; 1658 dp->cyls = sectors / (dp->heads * dp->sectors); 1659 dp->disksize = _5btol(scsipi_sense.size); 1660 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1661 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1662 (unsigned long long)dp->disksize, 1663 (unsigned long long)sectors); 1664 dp->disksize = sectors; 1665 } 1666 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1667 1668 return (SDGP_RESULT_OK); 1669 } 1670 1671 /* 1672 * Get the scsi driver to send a full inquiry to the * device and use the 1673 * results to fill out the disk parameter structure. 1674 */ 1675 static int 1676 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1677 { 1678 u_int64_t sectors; 1679 int error; 1680 #if 0 1681 int i; 1682 u_int8_t *p; 1683 #endif 1684 1685 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1686 if (sectors == 0) { 1687 struct scsipi_read_format_capacities cmd; 1688 struct { 1689 struct scsipi_capacity_list_header header; 1690 struct scsipi_capacity_descriptor desc; 1691 } __attribute__((packed)) data; 1692 1693 memset(&cmd, 0, sizeof(cmd)); 1694 memset(&data, 0, sizeof(data)); 1695 cmd.opcode = READ_FORMAT_CAPACITIES; 1696 _lto2b(sizeof(data), cmd.length); 1697 1698 error = scsipi_command(sd->sc_periph, 1699 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1700 SDRETRIES, 20000, NULL, 1701 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1702 if (error == EFTYPE) { 1703 /* Medium Format Corrupted, handle as not formatted */ 1704 return (SDGP_RESULT_UNFORMATTED); 1705 } 1706 if (error || data.header.length == 0) 1707 return (SDGP_RESULT_OFFLINE); 1708 1709 #if 0 1710 printf("rfc: length=%d\n", data.header.length); 1711 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"); 1712 #endif 1713 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1714 case SCSIPI_CAP_DESC_CODE_RESERVED: 1715 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1716 break; 1717 1718 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1719 return (SDGP_RESULT_UNFORMATTED); 1720 1721 case SCSIPI_CAP_DESC_CODE_NONE: 1722 return (SDGP_RESULT_OFFLINE); 1723 } 1724 1725 dp->disksize = sectors = _4btol(data.desc.nblks); 1726 if (sectors == 0) 1727 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1728 1729 dp->blksize = _3btol(data.desc.blklen); 1730 if (dp->blksize == 0) 1731 dp->blksize = 512; 1732 } else { 1733 struct sd_mode_sense_data scsipi_sense; 1734 int big, bsize; 1735 struct scsi_blk_desc *bdesc; 1736 1737 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1738 error = sd_mode_sense(sd, 0, &scsipi_sense, 1739 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1740 dp->blksize = 512; 1741 if (!error) { 1742 if (big) { 1743 bdesc = (void *)(&scsipi_sense.header.big + 1); 1744 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1745 } else { 1746 bdesc = (void *)(&scsipi_sense.header.small + 1); 1747 bsize = scsipi_sense.header.small.blk_desc_len; 1748 } 1749 1750 #if 0 1751 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1752 printf("page 0 bsize=%d\n", bsize); 1753 printf("page 0 ok\n"); 1754 #endif 1755 1756 if (bsize >= 8) { 1757 dp->blksize = _3btol(bdesc->blklen); 1758 if (dp->blksize == 0) 1759 dp->blksize = 512; 1760 } 1761 } 1762 } 1763 1764 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1765 return (0); 1766 } 1767 1768 static int 1769 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1770 { 1771 struct sd_mode_sense_data scsipi_sense; 1772 int error; 1773 int big, poffset, byte2; 1774 union scsi_disk_pages *pages; 1775 #if 0 1776 int i; 1777 u_int8_t *p; 1778 #endif 1779 1780 byte2 = SMS_DBD; 1781 again: 1782 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1783 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1784 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1785 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1786 flags | XS_CTL_SILENT, &big); 1787 if (error) { 1788 if (byte2 == SMS_DBD) { 1789 /* No result; try once more with DBD off */ 1790 byte2 = 0; 1791 goto again; 1792 } 1793 return (error); 1794 } 1795 1796 if (big) { 1797 poffset = sizeof scsipi_sense.header.big; 1798 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1799 } else { 1800 poffset = sizeof scsipi_sense.header.small; 1801 poffset += scsipi_sense.header.small.blk_desc_len; 1802 } 1803 1804 pages = (void *)((u_long)&scsipi_sense + poffset); 1805 #if 0 1806 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1807 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1808 #endif 1809 1810 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1811 return (ERESTART); 1812 1813 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1814 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1815 _3btol(pages->rigid_geometry.ncyl), 1816 pages->rigid_geometry.nheads, 1817 _2btol(pages->rigid_geometry.st_cyl_wp), 1818 _2btol(pages->rigid_geometry.st_cyl_rwc), 1819 _2btol(pages->rigid_geometry.land_zone))); 1820 1821 /* 1822 * KLUDGE!! (for zone recorded disks) 1823 * give a number of sectors so that sec * trks * cyls 1824 * is <= disk_size 1825 * can lead to wasted space! THINK ABOUT THIS ! 1826 */ 1827 dp->heads = pages->rigid_geometry.nheads; 1828 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1829 if (dp->heads == 0 || dp->cyls == 0) 1830 return (ERESTART); 1831 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1832 1833 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1834 if (dp->rot_rate == 0) 1835 dp->rot_rate = 3600; 1836 1837 #if 0 1838 printf("page 4 ok\n"); 1839 #endif 1840 return (0); 1841 } 1842 1843 static int 1844 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1845 { 1846 struct sd_mode_sense_data scsipi_sense; 1847 int error; 1848 int big, poffset, byte2; 1849 union scsi_disk_pages *pages; 1850 #if 0 1851 int i; 1852 u_int8_t *p; 1853 #endif 1854 1855 byte2 = SMS_DBD; 1856 again: 1857 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1858 error = sd_mode_sense(sd, 0, &scsipi_sense, 1859 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1860 sizeof(scsipi_sense.pages.flex_geometry), 5, 1861 flags | XS_CTL_SILENT, &big); 1862 if (error) { 1863 if (byte2 == SMS_DBD) { 1864 /* No result; try once more with DBD off */ 1865 byte2 = 0; 1866 goto again; 1867 } 1868 return (error); 1869 } 1870 1871 if (big) { 1872 poffset = sizeof scsipi_sense.header.big; 1873 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1874 } else { 1875 poffset = sizeof scsipi_sense.header.small; 1876 poffset += scsipi_sense.header.small.blk_desc_len; 1877 } 1878 1879 pages = (void *)((u_long)&scsipi_sense + poffset); 1880 #if 0 1881 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1882 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1883 #endif 1884 1885 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1886 return (ERESTART); 1887 1888 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1889 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1890 _3btol(pages->flex_geometry.ncyl), 1891 pages->flex_geometry.nheads, 1892 pages->flex_geometry.ph_sec_tr, 1893 _2btol(pages->flex_geometry.bytes_s))); 1894 1895 dp->heads = pages->flex_geometry.nheads; 1896 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1897 dp->sectors = pages->flex_geometry.ph_sec_tr; 1898 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1899 return (ERESTART); 1900 1901 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1902 if (dp->rot_rate == 0) 1903 dp->rot_rate = 3600; 1904 1905 #if 0 1906 printf("page 5 ok\n"); 1907 #endif 1908 return (0); 1909 } 1910 1911 static int 1912 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1913 { 1914 int error; 1915 1916 /* 1917 * If offline, the SDEV_MEDIA_LOADED flag will be 1918 * cleared by the caller if necessary. 1919 */ 1920 if (sd->type == T_SIMPLE_DIRECT) 1921 return (sd_get_simplifiedparms(sd, dp, flags)); 1922 1923 error = sd_get_capacity(sd, dp, flags); 1924 if (error) 1925 return (error); 1926 1927 if (sd->type == T_OPTICAL) 1928 goto page0; 1929 1930 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1931 if (!sd_get_parms_page5(sd, dp, flags) || 1932 !sd_get_parms_page4(sd, dp, flags)) 1933 return (SDGP_RESULT_OK); 1934 } else { 1935 if (!sd_get_parms_page4(sd, dp, flags) || 1936 !sd_get_parms_page5(sd, dp, flags)) 1937 return (SDGP_RESULT_OK); 1938 } 1939 1940 page0: 1941 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1942 /* Try calling driver's method for figuring out geometry. */ 1943 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1944 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1945 (sd->sc_periph, dp, dp->disksize)) { 1946 /* 1947 * Use adaptec standard fictitious geometry 1948 * this depends on which controller (e.g. 1542C is 1949 * different. but we have to put SOMETHING here..) 1950 */ 1951 dp->heads = 64; 1952 dp->sectors = 32; 1953 dp->cyls = dp->disksize / (64 * 32); 1954 } 1955 dp->rot_rate = 3600; 1956 return (SDGP_RESULT_OK); 1957 } 1958 1959 static int 1960 sd_flush(struct sd_softc *sd, int flags) 1961 { 1962 struct scsipi_periph *periph = sd->sc_periph; 1963 struct scsi_synchronize_cache_10 cmd; 1964 1965 /* 1966 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1967 * We issue with address 0 length 0, which should be 1968 * interpreted by the device as "all remaining blocks 1969 * starting at address 0". We ignore ILLEGAL REQUEST 1970 * in the event that the command is not supported by 1971 * the device, and poll for completion so that we know 1972 * that the cache has actually been flushed. 1973 * 1974 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1975 * command, as indicated by our quirks flags. 1976 * 1977 * XXX What about older devices? 1978 */ 1979 if (periph->periph_version < 2 || 1980 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1981 return (0); 1982 1983 sd->flags |= SDF_FLUSHING; 1984 memset(&cmd, 0, sizeof(cmd)); 1985 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1986 1987 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1988 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1989 } 1990 1991 static int 1992 sd_getcache(struct sd_softc *sd, int *bitsp) 1993 { 1994 struct scsipi_periph *periph = sd->sc_periph; 1995 struct sd_mode_sense_data scsipi_sense; 1996 int error, bits = 0; 1997 int big; 1998 union scsi_disk_pages *pages; 1999 2000 if (periph->periph_version < 2) 2001 return (EOPNOTSUPP); 2002 2003 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2004 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2005 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2006 if (error) 2007 return (error); 2008 2009 if (big) 2010 pages = (void *)(&scsipi_sense.header.big + 1); 2011 else 2012 pages = (void *)(&scsipi_sense.header.small + 1); 2013 2014 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2015 bits |= DKCACHE_READ; 2016 if (pages->caching_params.flags & CACHING_WCE) 2017 bits |= DKCACHE_WRITE; 2018 if (pages->caching_params.pg_code & PGCODE_PS) 2019 bits |= DKCACHE_SAVE; 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), 2024 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 2025 if (error == 0) { 2026 if (big) 2027 pages = (void *)(&scsipi_sense.header.big + 1); 2028 else 2029 pages = (void *)(&scsipi_sense.header.small + 1); 2030 2031 if (pages->caching_params.flags & CACHING_RCD) 2032 bits |= DKCACHE_RCHANGE; 2033 if (pages->caching_params.flags & CACHING_WCE) 2034 bits |= DKCACHE_WCHANGE; 2035 } 2036 2037 *bitsp = bits; 2038 2039 return (0); 2040 } 2041 2042 static int 2043 sd_setcache(struct sd_softc *sd, int bits) 2044 { 2045 struct scsipi_periph *periph = sd->sc_periph; 2046 struct sd_mode_sense_data scsipi_sense; 2047 int error; 2048 uint8_t oflags, byte2 = 0; 2049 int big; 2050 union scsi_disk_pages *pages; 2051 2052 if (periph->periph_version < 2) 2053 return (EOPNOTSUPP); 2054 2055 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2056 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2057 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2058 if (error) 2059 return (error); 2060 2061 if (big) 2062 pages = (void *)(&scsipi_sense.header.big + 1); 2063 else 2064 pages = (void *)(&scsipi_sense.header.small + 1); 2065 2066 oflags = pages->caching_params.flags; 2067 2068 if (bits & DKCACHE_READ) 2069 pages->caching_params.flags &= ~CACHING_RCD; 2070 else 2071 pages->caching_params.flags |= CACHING_RCD; 2072 2073 if (bits & DKCACHE_WRITE) 2074 pages->caching_params.flags |= CACHING_WCE; 2075 else 2076 pages->caching_params.flags &= ~CACHING_WCE; 2077 2078 if (oflags == pages->caching_params.flags) 2079 return (0); 2080 2081 pages->caching_params.pg_code &= PGCODE_MASK; 2082 2083 if (bits & DKCACHE_SAVE) 2084 byte2 |= SMS_SP; 2085 2086 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2087 sizeof(struct scsipi_mode_page_header) + 2088 pages->caching_params.pg_length, 0, big)); 2089 } 2090
Indexes created Mon Sep 22 13:09:51 GMT 2025