sd.c revision 1.229
1 /* $NetBSD: sd.c,v 1.229 2004/10/28 07:07:45 yamt 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 1.229 2004/10/28 07:07:45 yamt 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_big cmd_big; 777 struct scsi_rw cmd_small; 778 struct scsipi_generic *cmdp; 779 struct scsipi_xfer *xs; 780 int nblks, cmdlen, error, flags; 781 782 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 783 /* 784 * Check if the device has room for another command 785 */ 786 while (periph->periph_active < periph->periph_openings) { 787 /* 788 * there is excess capacity, but a special waits 789 * It'll need the adapter as soon as we clear out of the 790 * way and let it run (user level wait). 791 */ 792 if (periph->periph_flags & PERIPH_WAITING) { 793 periph->periph_flags &= ~PERIPH_WAITING; 794 wakeup((caddr_t)periph); 795 return; 796 } 797 798 /* 799 * If the device has become invalid, abort all the 800 * reads and writes until all files have been closed and 801 * re-opened 802 */ 803 if (__predict_false( 804 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 805 if ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 806 bp->b_error = EIO; 807 bp->b_flags |= B_ERROR; 808 bp->b_resid = bp->b_bcount; 809 biodone(bp); 810 continue; 811 } else { 812 return; 813 } 814 } 815 816 /* 817 * See if there is a buf with work for us to do.. 818 */ 819 if ((bp = BUFQ_PEEK(&sd->buf_queue)) == NULL) 820 return; 821 822 /* 823 * We have a buf, now we should make a command. 824 */ 825 826 if (lp->d_secsize == DEV_BSIZE) 827 nblks = bp->b_bcount >> DEV_BSHIFT; 828 else 829 nblks = howmany(bp->b_bcount, lp->d_secsize); 830 831 /* 832 * Fill out the scsi command. If the transfer will 833 * fit in a "small" cdb, use it. 834 */ 835 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 836 ((nblks & 0xff) == nblks) && 837 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 838 /* 839 * We can fit in a small cdb. 840 */ 841 memset(&cmd_small, 0, sizeof(cmd_small)); 842 cmd_small.opcode = (bp->b_flags & B_READ) ? 843 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 844 _lto3b(bp->b_rawblkno, cmd_small.addr); 845 cmd_small.length = nblks & 0xff; 846 cmdlen = sizeof(cmd_small); 847 cmdp = (struct scsipi_generic *)&cmd_small; 848 } else { 849 /* 850 * Need a large cdb. 851 */ 852 memset(&cmd_big, 0, sizeof(cmd_big)); 853 cmd_big.opcode = (bp->b_flags & B_READ) ? 854 READ_BIG : WRITE_BIG; 855 _lto4b(bp->b_rawblkno, cmd_big.addr); 856 _lto2b(nblks, cmd_big.length); 857 cmdlen = sizeof(cmd_big); 858 cmdp = (struct scsipi_generic *)&cmd_big; 859 } 860 861 /* Instrumentation. */ 862 disk_busy(&sd->sc_dk); 863 864 /* 865 * Mark the disk dirty so that the cache will be 866 * flushed on close. 867 */ 868 if ((bp->b_flags & B_READ) == 0) 869 sd->flags |= SDF_DIRTY; 870 871 /* 872 * Figure out what flags to use. 873 */ 874 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 875 if (bp->b_flags & B_READ) 876 flags |= XS_CTL_DATA_IN; 877 else 878 flags |= XS_CTL_DATA_OUT; 879 880 /* 881 * Call the routine that chats with the adapter. 882 * Note: we cannot sleep as we may be an interrupt 883 */ 884 xs = scsipi_make_xs(periph, cmdp, cmdlen, 885 (u_char *)bp->b_data, bp->b_bcount, 886 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 887 if (__predict_false(xs == NULL)) { 888 /* 889 * out of memory. Keep this buffer in the queue, and 890 * retry later. 891 */ 892 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 893 periph); 894 return; 895 } 896 /* 897 * need to dequeue the buffer before queuing the command, 898 * because cdstart may be called recursively from the 899 * HBA driver 900 */ 901 #ifdef DIAGNOSTIC 902 if (BUFQ_GET(&sd->buf_queue) != bp) 903 panic("sdstart(): dequeued wrong buf"); 904 #else 905 BUFQ_GET(&sd->buf_queue); 906 #endif 907 error = scsipi_execute_xs(xs); 908 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 909 KASSERT(error == 0); 910 } 911 } 912 913 static void 914 sdrestart(void *v) 915 { 916 int s = splbio(); 917 sdstart((struct scsipi_periph *)v); 918 splx(s); 919 } 920 921 static void 922 sddone(struct scsipi_xfer *xs, int error) 923 { 924 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 925 struct buf *bp = xs->bp; 926 927 if (sd->flags & SDF_FLUSHING) { 928 /* Flush completed, no longer dirty. */ 929 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 930 } 931 932 if (bp) { 933 bp->b_error = error; 934 bp->b_resid = xs->resid; 935 if (error) 936 bp->b_flags |= B_ERROR; 937 938 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 939 (bp->b_flags & B_READ)); 940 #if NRND > 0 941 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 942 #endif 943 944 biodone(bp); 945 } 946 } 947 948 static void 949 sdminphys(struct buf *bp) 950 { 951 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 952 long max; 953 954 /* 955 * If the device is ancient, we want to make sure that 956 * the transfer fits into a 6-byte cdb. 957 * 958 * XXX Note that the SCSI-I spec says that 256-block transfers 959 * are allowed in a 6-byte read/write, and are specified 960 * by settng the "length" to 0. However, we're conservative 961 * here, allowing only 255-block transfers in case an 962 * ancient device gets confused by length == 0. A length of 0 963 * in a 10-byte read/write actually means 0 blocks. 964 */ 965 if ((sd->flags & SDF_ANCIENT) && 966 ((sd->sc_periph->periph_flags & 967 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 968 max = sd->sc_dk.dk_label->d_secsize * 0xff; 969 970 if (bp->b_bcount > max) 971 bp->b_bcount = max; 972 } 973 974 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 975 } 976 977 static int 978 sdread(dev_t dev, struct uio *uio, int ioflag) 979 { 980 981 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 982 } 983 984 static int 985 sdwrite(dev_t dev, struct uio *uio, int ioflag) 986 { 987 988 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 989 } 990 991 /* 992 * Perform special action on behalf of the user 993 * Knows about the internals of this device 994 */ 995 static int 996 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 997 { 998 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 999 struct scsipi_periph *periph = sd->sc_periph; 1000 int part = SDPART(dev); 1001 int error = 0; 1002 #ifdef __HAVE_OLD_DISKLABEL 1003 struct disklabel *newlabel = NULL; 1004 #endif 1005 1006 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1007 1008 /* 1009 * If the device is not valid, some IOCTLs can still be 1010 * handled on the raw partition. Check this here. 1011 */ 1012 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1013 switch (cmd) { 1014 case DIOCKLABEL: 1015 case DIOCWLABEL: 1016 case DIOCLOCK: 1017 case DIOCEJECT: 1018 case ODIOCEJECT: 1019 case DIOCGCACHE: 1020 case DIOCSCACHE: 1021 case SCIOCIDENTIFY: 1022 case OSCIOCIDENTIFY: 1023 case SCIOCCOMMAND: 1024 case SCIOCDEBUG: 1025 if (part == RAW_PART) 1026 break; 1027 /* FALLTHROUGH */ 1028 default: 1029 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1030 return (ENODEV); 1031 else 1032 return (EIO); 1033 } 1034 } 1035 1036 switch (cmd) { 1037 case DIOCGDINFO: 1038 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1039 return (0); 1040 1041 #ifdef __HAVE_OLD_DISKLABEL 1042 case ODIOCGDINFO: 1043 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1044 if (newlabel == NULL) 1045 return EIO; 1046 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1047 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1048 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1049 else 1050 error = ENOTTY; 1051 free(newlabel, M_TEMP); 1052 return error; 1053 #endif 1054 1055 case DIOCGPART: 1056 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1057 ((struct partinfo *)addr)->part = 1058 &sd->sc_dk.dk_label->d_partitions[part]; 1059 return (0); 1060 1061 case DIOCWDINFO: 1062 case DIOCSDINFO: 1063 #ifdef __HAVE_OLD_DISKLABEL 1064 case ODIOCWDINFO: 1065 case ODIOCSDINFO: 1066 #endif 1067 { 1068 struct disklabel *lp; 1069 1070 if ((flag & FWRITE) == 0) 1071 return (EBADF); 1072 1073 #ifdef __HAVE_OLD_DISKLABEL 1074 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1075 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1076 if (newlabel == NULL) 1077 return EIO; 1078 memset(newlabel, 0, sizeof newlabel); 1079 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1080 lp = newlabel; 1081 } else 1082 #endif 1083 lp = (struct disklabel *)addr; 1084 1085 if ((error = lockmgr(&sd->sc_dk.dk_openlock, 1086 LK_EXCLUSIVE, NULL)) != 0) 1087 goto bad; 1088 sd->flags |= SDF_LABELLING; 1089 1090 error = setdisklabel(sd->sc_dk.dk_label, 1091 lp, /*sd->sc_dk.dk_openmask : */0, 1092 sd->sc_dk.dk_cpulabel); 1093 if (error == 0) { 1094 if (cmd == DIOCWDINFO 1095 #ifdef __HAVE_OLD_DISKLABEL 1096 || cmd == ODIOCWDINFO 1097 #endif 1098 ) 1099 error = writedisklabel(SDLABELDEV(dev), 1100 sdstrategy, sd->sc_dk.dk_label, 1101 sd->sc_dk.dk_cpulabel); 1102 } 1103 1104 sd->flags &= ~SDF_LABELLING; 1105 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1106 bad: 1107 #ifdef __HAVE_OLD_DISKLABEL 1108 if (newlabel != NULL) 1109 free(newlabel, M_TEMP); 1110 #endif 1111 return (error); 1112 } 1113 1114 case DIOCKLABEL: 1115 if (*(int *)addr) 1116 periph->periph_flags |= PERIPH_KEEP_LABEL; 1117 else 1118 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1119 return (0); 1120 1121 case DIOCWLABEL: 1122 if ((flag & FWRITE) == 0) 1123 return (EBADF); 1124 if (*(int *)addr) 1125 sd->flags |= SDF_WLABEL; 1126 else 1127 sd->flags &= ~SDF_WLABEL; 1128 return (0); 1129 1130 case DIOCLOCK: 1131 return (scsipi_prevent(periph, 1132 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1133 1134 case DIOCEJECT: 1135 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1136 return (ENOTTY); 1137 if (*(int *)addr == 0) { 1138 /* 1139 * Don't force eject: check that we are the only 1140 * partition open. If so, unlock it. 1141 */ 1142 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1143 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1144 sd->sc_dk.dk_openmask) { 1145 error = scsipi_prevent(periph, PR_ALLOW, 1146 XS_CTL_IGNORE_NOT_READY); 1147 if (error) 1148 return (error); 1149 } else { 1150 return (EBUSY); 1151 } 1152 } 1153 /* FALLTHROUGH */ 1154 case ODIOCEJECT: 1155 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1156 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1157 1158 case DIOCGDEFLABEL: 1159 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1160 return (0); 1161 1162 #ifdef __HAVE_OLD_DISKLABEL 1163 case ODIOCGDEFLABEL: 1164 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1165 if (newlabel == NULL) 1166 return EIO; 1167 sdgetdefaultlabel(sd, newlabel); 1168 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1169 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1170 else 1171 error = ENOTTY; 1172 free(newlabel, M_TEMP); 1173 return error; 1174 #endif 1175 1176 case DIOCGCACHE: 1177 return (sd_getcache(sd, (int *) addr)); 1178 1179 case DIOCSCACHE: 1180 if ((flag & FWRITE) == 0) 1181 return (EBADF); 1182 return (sd_setcache(sd, *(int *) addr)); 1183 1184 case DIOCCACHESYNC: 1185 /* 1186 * XXX Do we really need to care about having a writable 1187 * file descriptor here? 1188 */ 1189 if ((flag & FWRITE) == 0) 1190 return (EBADF); 1191 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1192 error = sd_flush(sd, 0); 1193 if (error) 1194 sd->flags &= ~SDF_FLUSHING; 1195 else 1196 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1197 } else 1198 error = 0; 1199 return (error); 1200 1201 case DIOCAWEDGE: 1202 { 1203 struct dkwedge_info *dkw = (void *) addr; 1204 1205 if ((flag & FWRITE) == 0) 1206 return (EBADF); 1207 1208 /* If the ioctl happens here, the parent is us. */ 1209 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1210 return (dkwedge_add(dkw)); 1211 } 1212 1213 case DIOCDWEDGE: 1214 { 1215 struct dkwedge_info *dkw = (void *) addr; 1216 1217 if ((flag & FWRITE) == 0) 1218 return (EBADF); 1219 1220 /* If the ioctl happens here, the parent is us. */ 1221 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1222 return (dkwedge_del(dkw)); 1223 } 1224 1225 case DIOCLWEDGES: 1226 { 1227 struct dkwedge_list *dkwl = (void *) addr; 1228 1229 return (dkwedge_list(&sd->sc_dk, dkwl, p)); 1230 } 1231 1232 default: 1233 if (part != RAW_PART) 1234 return (ENOTTY); 1235 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1236 } 1237 1238 #ifdef DIAGNOSTIC 1239 panic("sdioctl: impossible"); 1240 #endif 1241 } 1242 1243 static void 1244 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1245 { 1246 1247 memset(lp, 0, sizeof(struct disklabel)); 1248 1249 lp->d_secsize = sd->params.blksize; 1250 lp->d_ntracks = sd->params.heads; 1251 lp->d_nsectors = sd->params.sectors; 1252 lp->d_ncylinders = sd->params.cyls; 1253 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1254 1255 switch (scsipi_periph_bustype(sd->sc_periph)) { 1256 case SCSIPI_BUSTYPE_SCSI: 1257 lp->d_type = DTYPE_SCSI; 1258 break; 1259 case SCSIPI_BUSTYPE_ATAPI: 1260 lp->d_type = DTYPE_ATAPI; 1261 break; 1262 } 1263 /* 1264 * XXX 1265 * We could probe the mode pages to figure out what kind of disc it is. 1266 * Is this worthwhile? 1267 */ 1268 strncpy(lp->d_typename, "mydisk", 16); 1269 strncpy(lp->d_packname, "fictitious", 16); 1270 lp->d_secperunit = sd->params.disksize; 1271 lp->d_rpm = sd->params.rot_rate; 1272 lp->d_interleave = 1; 1273 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1274 D_REMOVABLE : 0; 1275 1276 lp->d_partitions[RAW_PART].p_offset = 0; 1277 lp->d_partitions[RAW_PART].p_size = 1278 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1279 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1280 lp->d_npartitions = RAW_PART + 1; 1281 1282 lp->d_magic = DISKMAGIC; 1283 lp->d_magic2 = DISKMAGIC; 1284 lp->d_checksum = dkcksum(lp); 1285 } 1286 1287 1288 /* 1289 * Load the label information on the named device 1290 */ 1291 static void 1292 sdgetdisklabel(struct sd_softc *sd) 1293 { 1294 struct disklabel *lp = sd->sc_dk.dk_label; 1295 const char *errstring; 1296 1297 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1298 1299 sdgetdefaultlabel(sd, lp); 1300 1301 if (lp->d_secpercyl == 0) { 1302 lp->d_secpercyl = 100; 1303 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1304 } 1305 1306 /* 1307 * Call the generic disklabel extraction routine 1308 */ 1309 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1310 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1311 if (errstring) { 1312 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1313 return; 1314 } 1315 } 1316 1317 static void 1318 sd_shutdown(void *arg) 1319 { 1320 struct sd_softc *sd = arg; 1321 1322 /* 1323 * If the disk cache needs to be flushed, and the disk supports 1324 * it, flush it. We're cold at this point, so we poll for 1325 * completion. 1326 */ 1327 if ((sd->flags & SDF_DIRTY) != 0) { 1328 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1329 printf("%s: cache synchronization failed\n", 1330 sd->sc_dev.dv_xname); 1331 sd->flags &= ~SDF_FLUSHING; 1332 } else 1333 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1334 } 1335 } 1336 1337 /* 1338 * Check Errors 1339 */ 1340 static int 1341 sd_interpret_sense(struct scsipi_xfer *xs) 1342 { 1343 struct scsipi_periph *periph = xs->xs_periph; 1344 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 1345 struct sd_softc *sd = (void *)periph->periph_dev; 1346 int s, error, retval = EJUSTRETURN; 1347 1348 /* 1349 * If the periph is already recovering, just do the normal 1350 * error processing. 1351 */ 1352 if (periph->periph_flags & PERIPH_RECOVERING) 1353 return (retval); 1354 1355 /* 1356 * If the device is not open yet, let the generic code handle it. 1357 */ 1358 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1359 return (retval); 1360 1361 /* 1362 * If it isn't a extended or extended/deferred error, let 1363 * the generic code handle it. 1364 */ 1365 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 1366 (sense->error_code & SSD_ERRCODE) != 0x71) 1367 return (retval); 1368 1369 if ((sense->flags & SSD_KEY) == SKEY_NOT_READY && 1370 sense->add_sense_code == 0x4) { 1371 if (sense->add_sense_code_qual == 0x01) { 1372 /* 1373 * Unit In The Process Of Becoming Ready. 1374 */ 1375 printf("%s: waiting for pack to spin up...\n", 1376 sd->sc_dev.dv_xname); 1377 if (!callout_pending(&periph->periph_callout)) 1378 scsipi_periph_freeze(periph, 1); 1379 callout_reset(&periph->periph_callout, 1380 5 * hz, scsipi_periph_timed_thaw, periph); 1381 retval = ERESTART; 1382 } else if (sense->add_sense_code_qual == 0x02) { 1383 printf("%s: pack is stopped, restarting...\n", 1384 sd->sc_dev.dv_xname); 1385 s = splbio(); 1386 periph->periph_flags |= PERIPH_RECOVERING; 1387 splx(s); 1388 error = scsipi_start(periph, SSS_START, 1389 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1390 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1391 if (error) { 1392 printf("%s: unable to restart pack\n", 1393 sd->sc_dev.dv_xname); 1394 retval = error; 1395 } else 1396 retval = ERESTART; 1397 s = splbio(); 1398 periph->periph_flags &= ~PERIPH_RECOVERING; 1399 splx(s); 1400 } 1401 } 1402 if ((sense->flags & SSD_KEY) == SKEY_MEDIUM_ERROR && 1403 sense->add_sense_code == 0x31 && 1404 sense->add_sense_code_qual == 0x00) { /* maybe for any asq ? */ 1405 /* Medium Format Corrupted */ 1406 retval = EFTYPE; 1407 } 1408 return (retval); 1409 } 1410 1411 1412 static int 1413 sdsize(dev_t dev) 1414 { 1415 struct sd_softc *sd; 1416 int part, unit, omask; 1417 int size; 1418 1419 unit = SDUNIT(dev); 1420 if (unit >= sd_cd.cd_ndevs) 1421 return (-1); 1422 sd = sd_cd.cd_devs[unit]; 1423 if (sd == NULL) 1424 return (-1); 1425 1426 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1427 return (-1); 1428 1429 part = SDPART(dev); 1430 omask = sd->sc_dk.dk_openmask & (1 << part); 1431 1432 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1433 return (-1); 1434 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1435 size = -1; 1436 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1437 size = -1; 1438 else 1439 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1440 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1441 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1442 return (-1); 1443 return (size); 1444 } 1445 1446 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1447 static struct scsipi_xfer sx; 1448 static int sddoingadump; 1449 1450 /* 1451 * dump all of physical memory into the partition specified, starting 1452 * at offset 'dumplo' into the partition. 1453 */ 1454 static int 1455 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1456 { 1457 struct sd_softc *sd; /* disk unit to do the I/O */ 1458 struct disklabel *lp; /* disk's disklabel */ 1459 int unit, part; 1460 int sectorsize; /* size of a disk sector */ 1461 int nsects; /* number of sectors in partition */ 1462 int sectoff; /* sector offset of partition */ 1463 int totwrt; /* total number of sectors left to write */ 1464 int nwrt; /* current number of sectors to write */ 1465 struct scsipi_rw_big cmd; /* write command */ 1466 struct scsipi_xfer *xs; /* ... convenience */ 1467 struct scsipi_periph *periph; 1468 struct scsipi_channel *chan; 1469 1470 /* Check if recursive dump; if so, punt. */ 1471 if (sddoingadump) 1472 return (EFAULT); 1473 1474 /* Mark as active early. */ 1475 sddoingadump = 1; 1476 1477 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1478 part = SDPART(dev); 1479 1480 /* Check for acceptable drive number. */ 1481 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1482 return (ENXIO); 1483 1484 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1485 return (ENODEV); 1486 1487 periph = sd->sc_periph; 1488 chan = periph->periph_channel; 1489 1490 /* Make sure it was initialized. */ 1491 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1492 return (ENXIO); 1493 1494 /* Convert to disk sectors. Request must be a multiple of size. */ 1495 lp = sd->sc_dk.dk_label; 1496 sectorsize = lp->d_secsize; 1497 if ((size % sectorsize) != 0) 1498 return (EFAULT); 1499 totwrt = size / sectorsize; 1500 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1501 1502 nsects = lp->d_partitions[part].p_size; 1503 sectoff = lp->d_partitions[part].p_offset; 1504 1505 /* Check transfer bounds against partition size. */ 1506 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1507 return (EINVAL); 1508 1509 /* Offset block number to start of partition. */ 1510 blkno += sectoff; 1511 1512 xs = &sx; 1513 1514 while (totwrt > 0) { 1515 nwrt = totwrt; /* XXX */ 1516 #ifndef SD_DUMP_NOT_TRUSTED 1517 /* 1518 * Fill out the scsi command 1519 */ 1520 memset(&cmd, 0, sizeof(cmd)); 1521 cmd.opcode = WRITE_BIG; 1522 _lto4b(blkno, cmd.addr); 1523 _lto2b(nwrt, cmd.length); 1524 /* 1525 * Fill out the scsipi_xfer structure 1526 * Note: we cannot sleep as we may be an interrupt 1527 * don't use scsipi_command() as it may want to wait 1528 * for an xs. 1529 */ 1530 memset(xs, 0, sizeof(sx)); 1531 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1532 XS_CTL_DATA_OUT; 1533 xs->xs_status = 0; 1534 xs->xs_periph = periph; 1535 xs->xs_retries = SDRETRIES; 1536 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1537 xs->cmd = (struct scsipi_generic *)&cmd; 1538 xs->cmdlen = sizeof(cmd); 1539 xs->resid = nwrt * sectorsize; 1540 xs->error = XS_NOERROR; 1541 xs->bp = 0; 1542 xs->data = va; 1543 xs->datalen = nwrt * sectorsize; 1544 1545 /* 1546 * Pass all this info to the scsi driver. 1547 */ 1548 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1549 if ((xs->xs_status & XS_STS_DONE) == 0 || 1550 xs->error != XS_NOERROR) 1551 return (EIO); 1552 #else /* SD_DUMP_NOT_TRUSTED */ 1553 /* Let's just talk about this first... */ 1554 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1555 delay(500 * 1000); /* half a second */ 1556 #endif /* SD_DUMP_NOT_TRUSTED */ 1557 1558 /* update block count */ 1559 totwrt -= nwrt; 1560 blkno += nwrt; 1561 va += sectorsize * nwrt; 1562 } 1563 sddoingadump = 0; 1564 return (0); 1565 } 1566 1567 static int 1568 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1569 int page, int flags, int *big) 1570 { 1571 1572 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1573 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1574 *big = 1; 1575 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1576 size + sizeof(struct scsipi_mode_header_big), 1577 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1578 } else { 1579 *big = 0; 1580 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1581 size + sizeof(struct scsipi_mode_header), 1582 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1583 } 1584 } 1585 1586 static int 1587 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1588 int flags, int big) 1589 { 1590 1591 if (big) { 1592 struct scsipi_mode_header_big *header = sense; 1593 1594 _lto2b(0, header->data_length); 1595 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1596 size + sizeof(struct scsipi_mode_header_big), 1597 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1598 } else { 1599 struct scsipi_mode_header *header = sense; 1600 1601 header->data_length = 0; 1602 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1603 size + sizeof(struct scsipi_mode_header), 1604 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1605 } 1606 } 1607 1608 static int 1609 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1610 { 1611 struct { 1612 struct scsipi_mode_header header; 1613 /* no block descriptor */ 1614 u_int8_t pg_code; /* page code (should be 6) */ 1615 u_int8_t pg_length; /* page length (should be 11) */ 1616 u_int8_t wcd; /* bit0: cache disable */ 1617 u_int8_t lbs[2]; /* logical block size */ 1618 u_int8_t size[5]; /* number of log. blocks */ 1619 u_int8_t pp; /* power/performance */ 1620 u_int8_t flags; 1621 u_int8_t resvd; 1622 } scsipi_sense; 1623 u_int64_t sectors; 1624 int error; 1625 1626 /* 1627 * scsipi_size (ie "read capacity") and mode sense page 6 1628 * give the same information. Do both for now, and check 1629 * for consistency. 1630 * XXX probably differs for removable media 1631 */ 1632 dp->blksize = 512; 1633 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1634 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1635 1636 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1637 &scsipi_sense.header, sizeof(scsipi_sense), 1638 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1639 1640 if (error != 0) 1641 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1642 1643 dp->blksize = _2btol(scsipi_sense.lbs); 1644 if (dp->blksize == 0) 1645 dp->blksize = 512; 1646 1647 /* 1648 * Create a pseudo-geometry. 1649 */ 1650 dp->heads = 64; 1651 dp->sectors = 32; 1652 dp->cyls = sectors / (dp->heads * dp->sectors); 1653 dp->disksize = _5btol(scsipi_sense.size); 1654 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1655 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1656 (unsigned long long)dp->disksize, 1657 (unsigned long long)sectors); 1658 dp->disksize = sectors; 1659 } 1660 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1661 1662 return (SDGP_RESULT_OK); 1663 } 1664 1665 /* 1666 * Get the scsi driver to send a full inquiry to the * device and use the 1667 * results to fill out the disk parameter structure. 1668 */ 1669 static int 1670 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1671 { 1672 u_int64_t sectors; 1673 int error; 1674 #if 0 1675 int i; 1676 u_int8_t *p; 1677 #endif 1678 1679 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1680 if (sectors == 0) { 1681 struct scsipi_read_format_capacities cmd; 1682 struct { 1683 struct scsipi_capacity_list_header header; 1684 struct scsipi_capacity_descriptor desc; 1685 } __attribute__((packed)) data; 1686 1687 memset(&cmd, 0, sizeof(cmd)); 1688 memset(&data, 0, sizeof(data)); 1689 cmd.opcode = READ_FORMAT_CAPACITIES; 1690 _lto2b(sizeof(data), cmd.length); 1691 1692 error = scsipi_command(sd->sc_periph, 1693 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1694 SDRETRIES, 20000, NULL, 1695 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1696 if (error == EFTYPE) { 1697 /* Medium Format Corrupted, handle as not formatted */ 1698 return (SDGP_RESULT_UNFORMATTED); 1699 } 1700 if (error || data.header.length == 0) 1701 return (SDGP_RESULT_OFFLINE); 1702 1703 #if 0 1704 printf("rfc: length=%d\n", data.header.length); 1705 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"); 1706 #endif 1707 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1708 case SCSIPI_CAP_DESC_CODE_RESERVED: 1709 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1710 break; 1711 1712 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1713 return (SDGP_RESULT_UNFORMATTED); 1714 1715 case SCSIPI_CAP_DESC_CODE_NONE: 1716 return (SDGP_RESULT_OFFLINE); 1717 } 1718 1719 dp->disksize = sectors = _4btol(data.desc.nblks); 1720 if (sectors == 0) 1721 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1722 1723 dp->blksize = _3btol(data.desc.blklen); 1724 if (dp->blksize == 0) 1725 dp->blksize = 512; 1726 } else { 1727 struct sd_mode_sense_data scsipi_sense; 1728 int big, bsize; 1729 struct scsi_blk_desc *bdesc; 1730 1731 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1732 error = sd_mode_sense(sd, 0, &scsipi_sense, 1733 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1734 dp->blksize = 512; 1735 if (!error) { 1736 if (big) { 1737 bdesc = (void *)(&scsipi_sense.header.big + 1); 1738 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1739 } else { 1740 bdesc = (void *)(&scsipi_sense.header.small + 1); 1741 bsize = scsipi_sense.header.small.blk_desc_len; 1742 } 1743 1744 #if 0 1745 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1746 printf("page 0 bsize=%d\n", bsize); 1747 printf("page 0 ok\n"); 1748 #endif 1749 1750 if (bsize >= 8) { 1751 dp->blksize = _3btol(bdesc->blklen); 1752 if (dp->blksize == 0) 1753 dp->blksize = 512; 1754 } 1755 } 1756 } 1757 1758 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1759 return (0); 1760 } 1761 1762 static int 1763 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1764 { 1765 struct sd_mode_sense_data scsipi_sense; 1766 int error; 1767 int big, poffset, byte2; 1768 union scsi_disk_pages *pages; 1769 #if 0 1770 int i; 1771 u_int8_t *p; 1772 #endif 1773 1774 byte2 = SMS_DBD; 1775 again: 1776 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1777 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1778 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1779 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1780 flags | XS_CTL_SILENT, &big); 1781 if (error) { 1782 if (byte2 == SMS_DBD) { 1783 /* No result; try once more with DBD off */ 1784 byte2 = 0; 1785 goto again; 1786 } 1787 return (error); 1788 } 1789 1790 if (big) { 1791 poffset = sizeof scsipi_sense.header.big; 1792 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1793 } else { 1794 poffset = sizeof scsipi_sense.header.small; 1795 poffset += scsipi_sense.header.small.blk_desc_len; 1796 } 1797 1798 pages = (void *)((u_long)&scsipi_sense + poffset); 1799 #if 0 1800 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1801 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1802 #endif 1803 1804 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1805 return (ERESTART); 1806 1807 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1808 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1809 _3btol(pages->rigid_geometry.ncyl), 1810 pages->rigid_geometry.nheads, 1811 _2btol(pages->rigid_geometry.st_cyl_wp), 1812 _2btol(pages->rigid_geometry.st_cyl_rwc), 1813 _2btol(pages->rigid_geometry.land_zone))); 1814 1815 /* 1816 * KLUDGE!! (for zone recorded disks) 1817 * give a number of sectors so that sec * trks * cyls 1818 * is <= disk_size 1819 * can lead to wasted space! THINK ABOUT THIS ! 1820 */ 1821 dp->heads = pages->rigid_geometry.nheads; 1822 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1823 if (dp->heads == 0 || dp->cyls == 0) 1824 return (ERESTART); 1825 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1826 1827 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1828 if (dp->rot_rate == 0) 1829 dp->rot_rate = 3600; 1830 1831 #if 0 1832 printf("page 4 ok\n"); 1833 #endif 1834 return (0); 1835 } 1836 1837 static int 1838 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1839 { 1840 struct sd_mode_sense_data scsipi_sense; 1841 int error; 1842 int big, poffset, byte2; 1843 union scsi_disk_pages *pages; 1844 #if 0 1845 int i; 1846 u_int8_t *p; 1847 #endif 1848 1849 byte2 = SMS_DBD; 1850 again: 1851 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1852 error = sd_mode_sense(sd, 0, &scsipi_sense, 1853 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1854 sizeof(scsipi_sense.pages.flex_geometry), 5, 1855 flags | XS_CTL_SILENT, &big); 1856 if (error) { 1857 if (byte2 == SMS_DBD) { 1858 /* No result; try once more with DBD off */ 1859 byte2 = 0; 1860 goto again; 1861 } 1862 return (error); 1863 } 1864 1865 if (big) { 1866 poffset = sizeof scsipi_sense.header.big; 1867 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1868 } else { 1869 poffset = sizeof scsipi_sense.header.small; 1870 poffset += scsipi_sense.header.small.blk_desc_len; 1871 } 1872 1873 pages = (void *)((u_long)&scsipi_sense + poffset); 1874 #if 0 1875 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1876 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1877 #endif 1878 1879 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1880 return (ERESTART); 1881 1882 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1883 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1884 _3btol(pages->flex_geometry.ncyl), 1885 pages->flex_geometry.nheads, 1886 pages->flex_geometry.ph_sec_tr, 1887 _2btol(pages->flex_geometry.bytes_s))); 1888 1889 dp->heads = pages->flex_geometry.nheads; 1890 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1891 dp->sectors = pages->flex_geometry.ph_sec_tr; 1892 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1893 return (ERESTART); 1894 1895 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1896 if (dp->rot_rate == 0) 1897 dp->rot_rate = 3600; 1898 1899 #if 0 1900 printf("page 5 ok\n"); 1901 #endif 1902 return (0); 1903 } 1904 1905 static int 1906 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1907 { 1908 int error; 1909 1910 /* 1911 * If offline, the SDEV_MEDIA_LOADED flag will be 1912 * cleared by the caller if necessary. 1913 */ 1914 if (sd->type == T_SIMPLE_DIRECT) 1915 return (sd_get_simplifiedparms(sd, dp, flags)); 1916 1917 error = sd_get_capacity(sd, dp, flags); 1918 if (error) 1919 return (error); 1920 1921 if (sd->type == T_OPTICAL) 1922 goto page0; 1923 1924 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1925 if (!sd_get_parms_page5(sd, dp, flags) || 1926 !sd_get_parms_page4(sd, dp, flags)) 1927 return (SDGP_RESULT_OK); 1928 } else { 1929 if (!sd_get_parms_page4(sd, dp, flags) || 1930 !sd_get_parms_page5(sd, dp, flags)) 1931 return (SDGP_RESULT_OK); 1932 } 1933 1934 page0: 1935 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1936 /* Try calling driver's method for figuring out geometry. */ 1937 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1938 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1939 (sd->sc_periph, dp, dp->disksize)) { 1940 /* 1941 * Use adaptec standard fictitious geometry 1942 * this depends on which controller (e.g. 1542C is 1943 * different. but we have to put SOMETHING here..) 1944 */ 1945 dp->heads = 64; 1946 dp->sectors = 32; 1947 dp->cyls = dp->disksize / (64 * 32); 1948 } 1949 dp->rot_rate = 3600; 1950 return (SDGP_RESULT_OK); 1951 } 1952 1953 static int 1954 sd_flush(struct sd_softc *sd, int flags) 1955 { 1956 struct scsipi_periph *periph = sd->sc_periph; 1957 struct scsi_synchronize_cache cmd; 1958 1959 /* 1960 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1961 * We issue with address 0 length 0, which should be 1962 * interpreted by the device as "all remaining blocks 1963 * starting at address 0". We ignore ILLEGAL REQUEST 1964 * in the event that the command is not supported by 1965 * the device, and poll for completion so that we know 1966 * that the cache has actually been flushed. 1967 * 1968 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1969 * command, as indicated by our quirks flags. 1970 * 1971 * XXX What about older devices? 1972 */ 1973 if (periph->periph_version < 2 || 1974 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1975 return (0); 1976 1977 sd->flags |= SDF_FLUSHING; 1978 memset(&cmd, 0, sizeof(cmd)); 1979 cmd.opcode = SCSI_SYNCHRONIZE_CACHE; 1980 1981 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1982 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1983 } 1984 1985 static int 1986 sd_getcache(struct sd_softc *sd, int *bitsp) 1987 { 1988 struct scsipi_periph *periph = sd->sc_periph; 1989 struct sd_mode_sense_data scsipi_sense; 1990 int error, bits = 0; 1991 int big; 1992 union scsi_disk_pages *pages; 1993 1994 if (periph->periph_version < 2) 1995 return (EOPNOTSUPP); 1996 1997 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1998 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 1999 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2000 if (error) 2001 return (error); 2002 2003 if (big) 2004 pages = (void *)(&scsipi_sense.header.big + 1); 2005 else 2006 pages = (void *)(&scsipi_sense.header.small + 1); 2007 2008 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2009 bits |= DKCACHE_READ; 2010 if (pages->caching_params.flags & CACHING_WCE) 2011 bits |= DKCACHE_WRITE; 2012 if (pages->caching_params.pg_code & PGCODE_PS) 2013 bits |= DKCACHE_SAVE; 2014 2015 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2016 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2017 sizeof(scsipi_sense.pages.caching_params), 2018 SMS_PAGE_CTRL_CHANGEABLE|8, 0, &big); 2019 if (error == 0) { 2020 if (big) 2021 pages = (void *)(&scsipi_sense.header.big + 1); 2022 else 2023 pages = (void *)(&scsipi_sense.header.small + 1); 2024 2025 if (pages->caching_params.flags & CACHING_RCD) 2026 bits |= DKCACHE_RCHANGE; 2027 if (pages->caching_params.flags & CACHING_WCE) 2028 bits |= DKCACHE_WCHANGE; 2029 } 2030 2031 *bitsp = bits; 2032 2033 return (0); 2034 } 2035 2036 static int 2037 sd_setcache(struct sd_softc *sd, int bits) 2038 { 2039 struct scsipi_periph *periph = sd->sc_periph; 2040 struct sd_mode_sense_data scsipi_sense; 2041 int error; 2042 uint8_t oflags, byte2 = 0; 2043 int big; 2044 union scsi_disk_pages *pages; 2045 2046 if (periph->periph_version < 2) 2047 return (EOPNOTSUPP); 2048 2049 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2050 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2051 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2052 if (error) 2053 return (error); 2054 2055 if (big) 2056 pages = (void *)(&scsipi_sense.header.big + 1); 2057 else 2058 pages = (void *)(&scsipi_sense.header.small + 1); 2059 2060 oflags = pages->caching_params.flags; 2061 2062 if (bits & DKCACHE_READ) 2063 pages->caching_params.flags &= ~CACHING_RCD; 2064 else 2065 pages->caching_params.flags |= CACHING_RCD; 2066 2067 if (bits & DKCACHE_WRITE) 2068 pages->caching_params.flags |= CACHING_WCE; 2069 else 2070 pages->caching_params.flags &= ~CACHING_WCE; 2071 2072 if (oflags == pages->caching_params.flags) 2073 return (0); 2074 2075 pages->caching_params.pg_code &= PGCODE_MASK; 2076 2077 if (bits & DKCACHE_SAVE) 2078 byte2 |= SMS_SP; 2079 2080 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2081 sizeof(struct scsipi_mode_page_header) + 2082 pages->caching_params.pg_length, 0, big)); 2083 } 2084
Indexes created Tue Sep 23 07:09:52 GMT 2025