sd.c revision 1.248
1 /* $NetBSD: sd.c,v 1.248 2006/06/01 15:53:09 nathanw 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 1.248 2006/06/01 15:53:09 nathanw Exp $"); 58 59 #include "opt_scsi.h" 60 #include "rnd.h" 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/kernel.h> 65 #include <sys/file.h> 66 #include <sys/stat.h> 67 #include <sys/ioctl.h> 68 #include <sys/scsiio.h> 69 #include <sys/buf.h> 70 #include <sys/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/errno.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/proc.h> 78 #include <sys/conf.h> 79 #include <sys/vnode.h> 80 #if NRND > 0 81 #include <sys/rnd.h> 82 #endif 83 84 #include <dev/scsipi/scsi_spc.h> 85 #include <dev/scsipi/scsipi_all.h> 86 #include <dev/scsipi/scsi_all.h> 87 #include <dev/scsipi/scsipi_disk.h> 88 #include <dev/scsipi/scsi_disk.h> 89 #include <dev/scsipi/scsiconf.h> 90 #include <dev/scsipi/scsipi_base.h> 91 #include <dev/scsipi/sdvar.h> 92 93 #define SDUNIT(dev) DISKUNIT(dev) 94 #define SDPART(dev) DISKPART(dev) 95 #define SDMINOR(unit, part) DISKMINOR(unit, part) 96 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 97 98 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 99 100 static void sdminphys(struct buf *); 101 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 102 static int sdgetdisklabel(struct sd_softc *); 103 static void sdstart(struct scsipi_periph *); 104 static void sdrestart(void *); 105 static void sddone(struct scsipi_xfer *, int); 106 static void sd_shutdown(void *); 107 static int sd_interpret_sense(struct scsipi_xfer *); 108 109 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int, int *); 111 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 112 int); 113 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 114 int); 115 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 117 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 118 int); 119 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 120 int); 121 122 static int sd_flush(struct sd_softc *, int); 123 static int sd_getcache(struct sd_softc *, int *); 124 static int sd_setcache(struct sd_softc *, int); 125 126 static int sdmatch(struct device *, struct cfdata *, void *); 127 static void sdattach(struct device *, struct device *, void *); 128 static int sdactivate(struct device *, enum devact); 129 static int sddetach(struct device *, int); 130 131 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 132 sdactivate); 133 134 extern struct cfdriver sd_cd; 135 136 static const struct scsipi_inquiry_pattern sd_patterns[] = { 137 {T_DIRECT, T_FIXED, 138 "", "", ""}, 139 {T_DIRECT, T_REMOV, 140 "", "", ""}, 141 {T_OPTICAL, T_FIXED, 142 "", "", ""}, 143 {T_OPTICAL, T_REMOV, 144 "", "", ""}, 145 {T_SIMPLE_DIRECT, T_FIXED, 146 "", "", ""}, 147 {T_SIMPLE_DIRECT, T_REMOV, 148 "", "", ""}, 149 }; 150 151 static dev_type_open(sdopen); 152 static dev_type_close(sdclose); 153 static dev_type_read(sdread); 154 static dev_type_write(sdwrite); 155 static dev_type_ioctl(sdioctl); 156 static dev_type_strategy(sdstrategy); 157 static dev_type_dump(sddump); 158 static dev_type_size(sdsize); 159 160 const struct bdevsw sd_bdevsw = { 161 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 162 }; 163 164 const struct cdevsw sd_cdevsw = { 165 sdopen, sdclose, sdread, sdwrite, sdioctl, 166 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 167 }; 168 169 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 170 171 static const struct scsipi_periphsw sd_switch = { 172 sd_interpret_sense, /* check our error handler first */ 173 sdstart, /* have a queue, served by this */ 174 NULL, /* have no async handler */ 175 sddone, /* deal with stats at interrupt time */ 176 }; 177 178 struct sd_mode_sense_data { 179 /* 180 * XXX 181 * We are not going to parse this as-is -- it just has to be large 182 * enough. 183 */ 184 union { 185 struct scsi_mode_parameter_header_6 small; 186 struct scsi_mode_parameter_header_10 big; 187 } header; 188 struct scsi_general_block_descriptor blk_desc; 189 union scsi_disk_pages pages; 190 }; 191 192 /* 193 * The routine called by the low level scsi routine when it discovers 194 * A device suitable for this driver 195 */ 196 static int 197 sdmatch(struct device *parent, struct cfdata *match, void *aux) 198 { 199 struct scsipibus_attach_args *sa = aux; 200 int priority; 201 202 (void)scsipi_inqmatch(&sa->sa_inqbuf, 203 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 204 sizeof(sd_patterns[0]), &priority); 205 206 return (priority); 207 } 208 209 /* 210 * Attach routine common to atapi & scsi. 211 */ 212 static void 213 sdattach(struct device *parent, struct device *self, void *aux) 214 { 215 struct sd_softc *sd = device_private(self); 216 struct scsipibus_attach_args *sa = aux; 217 struct scsipi_periph *periph = sa->sa_periph; 218 int error, result; 219 struct disk_parms *dp = &sd->params; 220 char pbuf[9]; 221 222 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 223 224 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 225 if (sd->type == T_SIMPLE_DIRECT) 226 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 227 228 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 229 periph->periph_version == 0) 230 sd->flags |= SDF_ANCIENT; 231 232 bufq_alloc(&sd->buf_queue, 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 = device_private(self); 349 int s, bmaj, cmaj, i, mn; 350 351 /* locate the major number */ 352 bmaj = bdevsw_lookup_major(&sd_bdevsw); 353 cmaj = cdevsw_lookup_major(&sd_cdevsw); 354 355 /* Nuke the vnodes for any open instances */ 356 for (i = 0; i < MAXPARTITIONS; i++) { 357 mn = SDMINOR(device_unit(self), i); 358 vdevgone(bmaj, mn, mn, VBLK); 359 vdevgone(cmaj, mn, mn, VCHR); 360 } 361 362 /* kill any pending restart */ 363 callout_stop(&sd->sc_callout); 364 365 /* Delete all of our wedges. */ 366 dkwedge_delall(&sd->sc_dk); 367 368 s = splbio(); 369 370 /* Kill off any queued buffers. */ 371 bufq_drain(sd->buf_queue); 372 373 bufq_free(sd->buf_queue); 374 375 /* Kill off any pending commands. */ 376 scsipi_kill_pending(sd->sc_periph); 377 378 splx(s); 379 380 /* Detach from the disk list. */ 381 disk_detach(&sd->sc_dk); 382 383 /* Get rid of the shutdown hook. */ 384 shutdownhook_disestablish(sd->sc_sdhook); 385 386 #if NRND > 0 387 /* Unhook the entropy source. */ 388 rnd_detach_source(&sd->rnd_source); 389 #endif 390 391 return (0); 392 } 393 394 /* 395 * open the device. Make sure the partition info is a up-to-date as can be. 396 */ 397 static int 398 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 399 { 400 struct sd_softc *sd; 401 struct scsipi_periph *periph; 402 struct scsipi_adapter *adapt; 403 int unit, part; 404 int error; 405 406 unit = SDUNIT(dev); 407 if (unit >= sd_cd.cd_ndevs) 408 return (ENXIO); 409 sd = sd_cd.cd_devs[unit]; 410 if (sd == NULL) 411 return (ENXIO); 412 413 if (!device_is_active(&sd->sc_dev)) 414 return (ENODEV); 415 416 part = SDPART(dev); 417 418 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 419 return (error); 420 421 /* 422 * If there are wedges, and this is not RAW_PART, then we 423 * need to fail. 424 */ 425 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 426 error = EBUSY; 427 goto bad1; 428 } 429 430 periph = sd->sc_periph; 431 adapt = periph->periph_channel->chan_adapter; 432 433 SC_DEBUG(periph, SCSIPI_DB1, 434 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 435 sd_cd.cd_ndevs, part)); 436 437 /* 438 * If this is the first open of this device, add a reference 439 * to the adapter. 440 */ 441 if (sd->sc_dk.dk_openmask == 0 && 442 (error = scsipi_adapter_addref(adapt)) != 0) 443 goto bad1; 444 445 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 446 /* 447 * If any partition is open, but the disk has been invalidated, 448 * disallow further opens of non-raw partition 449 */ 450 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 451 (part != RAW_PART || fmt != S_IFCHR)) { 452 error = EIO; 453 goto bad2; 454 } 455 } else { 456 int silent; 457 458 if (part == RAW_PART && fmt == S_IFCHR) 459 silent = XS_CTL_SILENT; 460 else 461 silent = 0; 462 463 /* Check that it is still responding and ok. */ 464 error = scsipi_test_unit_ready(periph, 465 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 466 silent); 467 468 /* 469 * Start the pack spinning if necessary. Always allow the 470 * raw parition to be opened, for raw IOCTLs. Data transfers 471 * will check for SDEV_MEDIA_LOADED. 472 */ 473 if (error == EIO) { 474 int error2; 475 476 error2 = scsipi_start(periph, SSS_START, silent); 477 switch (error2) { 478 case 0: 479 error = 0; 480 break; 481 case EIO: 482 case EINVAL: 483 break; 484 default: 485 error = error2; 486 break; 487 } 488 } 489 if (error) { 490 if (silent) 491 goto out; 492 goto bad2; 493 } 494 495 periph->periph_flags |= PERIPH_OPEN; 496 497 if (periph->periph_flags & PERIPH_REMOVABLE) { 498 /* Lock the pack in. */ 499 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 500 XS_CTL_IGNORE_ILLEGAL_REQUEST | 501 XS_CTL_IGNORE_MEDIA_CHANGE); 502 if (error) 503 goto bad3; 504 } 505 506 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 507 int param_error; 508 periph->periph_flags |= PERIPH_MEDIA_LOADED; 509 510 /* 511 * Load the physical device parameters. 512 * 513 * Note that if media is present but unformatted, 514 * we allow the open (so that it can be formatted!). 515 * The drive should refuse real I/O, if the media is 516 * unformatted. 517 */ 518 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 519 == SDGP_RESULT_OFFLINE) { 520 error = ENXIO; 521 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 522 goto bad3; 523 } 524 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 525 526 /* Load the partition info if not already loaded. */ 527 if (param_error == 0) { 528 if (sdgetdisklabel(sd) != 0) { 529 error = EIO; 530 goto bad3; 531 } 532 SC_DEBUG(periph, SCSIPI_DB3, 533 ("Disklabel loaded ")); 534 } 535 } 536 } 537 538 /* Check that the partition exists. */ 539 if (part != RAW_PART && 540 (part >= sd->sc_dk.dk_label->d_npartitions || 541 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 542 error = ENXIO; 543 goto bad3; 544 } 545 546 out: /* Insure only one open at a time. */ 547 switch (fmt) { 548 case S_IFCHR: 549 sd->sc_dk.dk_copenmask |= (1 << part); 550 break; 551 case S_IFBLK: 552 sd->sc_dk.dk_bopenmask |= (1 << part); 553 break; 554 } 555 sd->sc_dk.dk_openmask = 556 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 557 558 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 559 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 560 return (0); 561 562 bad3: 563 if (sd->sc_dk.dk_openmask == 0) { 564 if (periph->periph_flags & PERIPH_REMOVABLE) 565 scsipi_prevent(periph, SPAMR_ALLOW, 566 XS_CTL_IGNORE_ILLEGAL_REQUEST | 567 XS_CTL_IGNORE_MEDIA_CHANGE); 568 periph->periph_flags &= ~PERIPH_OPEN; 569 } 570 571 bad2: 572 if (sd->sc_dk.dk_openmask == 0) 573 scsipi_adapter_delref(adapt); 574 575 bad1: 576 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 577 return (error); 578 } 579 580 /* 581 * close the device.. only called if we are the LAST occurence of an open 582 * device. Convenient now but usually a pain. 583 */ 584 static int 585 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 586 { 587 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 588 struct scsipi_periph *periph = sd->sc_periph; 589 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 590 int part = SDPART(dev); 591 int error; 592 593 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 594 return (error); 595 596 switch (fmt) { 597 case S_IFCHR: 598 sd->sc_dk.dk_copenmask &= ~(1 << part); 599 break; 600 case S_IFBLK: 601 sd->sc_dk.dk_bopenmask &= ~(1 << part); 602 break; 603 } 604 sd->sc_dk.dk_openmask = 605 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 606 607 if (sd->sc_dk.dk_openmask == 0) { 608 /* 609 * If the disk cache needs flushing, and the disk supports 610 * it, do it now. 611 */ 612 if ((sd->flags & SDF_DIRTY) != 0) { 613 if (sd_flush(sd, 0)) { 614 printf("%s: cache synchronization failed\n", 615 sd->sc_dev.dv_xname); 616 sd->flags &= ~SDF_FLUSHING; 617 } else 618 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 619 } 620 621 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 622 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 623 624 scsipi_wait_drain(periph); 625 626 if (periph->periph_flags & PERIPH_REMOVABLE) 627 scsipi_prevent(periph, SPAMR_ALLOW, 628 XS_CTL_IGNORE_ILLEGAL_REQUEST | 629 XS_CTL_IGNORE_NOT_READY); 630 periph->periph_flags &= ~PERIPH_OPEN; 631 632 scsipi_wait_drain(periph); 633 634 scsipi_adapter_delref(adapt); 635 } 636 637 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 638 return (0); 639 } 640 641 /* 642 * Actually translate the requested transfer into one the physical driver 643 * can understand. The transfer is described by a buf and will include 644 * only one physical transfer. 645 */ 646 static void 647 sdstrategy(struct buf *bp) 648 { 649 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 650 struct scsipi_periph *periph = sd->sc_periph; 651 struct disklabel *lp; 652 daddr_t blkno; 653 int s; 654 boolean_t sector_aligned; 655 656 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 657 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 658 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 659 /* 660 * If the device has been made invalid, error out 661 */ 662 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 663 !device_is_active(&sd->sc_dev)) { 664 if (periph->periph_flags & PERIPH_OPEN) 665 bp->b_error = EIO; 666 else 667 bp->b_error = ENODEV; 668 goto bad; 669 } 670 671 lp = sd->sc_dk.dk_label; 672 673 /* 674 * The transfer must be a whole number of blocks, offset must not be 675 * negative. 676 */ 677 if (lp->d_secsize == DEV_BSIZE) { 678 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 679 } else { 680 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 681 } 682 if (!sector_aligned || bp->b_blkno < 0) { 683 bp->b_error = EINVAL; 684 goto bad; 685 } 686 /* 687 * If it's a null transfer, return immediatly 688 */ 689 if (bp->b_bcount == 0) 690 goto done; 691 692 /* 693 * Do bounds checking, adjust transfer. if error, process. 694 * If end of partition, just return. 695 */ 696 if (SDPART(bp->b_dev) == RAW_PART) { 697 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 698 sd->params.disksize512) <= 0) 699 goto done; 700 } else { 701 if (bounds_check_with_label(&sd->sc_dk, bp, 702 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 703 goto done; 704 } 705 706 /* 707 * Now convert the block number to absolute and put it in 708 * terms of the device's logical block size. 709 */ 710 if (lp->d_secsize == DEV_BSIZE) 711 blkno = bp->b_blkno; 712 else if (lp->d_secsize > DEV_BSIZE) 713 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 714 else 715 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 716 717 if (SDPART(bp->b_dev) != RAW_PART) 718 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 719 720 bp->b_rawblkno = blkno; 721 722 s = splbio(); 723 724 /* 725 * Place it in the queue of disk activities for this disk. 726 * 727 * XXX Only do disksort() if the current operating mode does not 728 * XXX include tagged queueing. 729 */ 730 BUFQ_PUT(sd->buf_queue, bp); 731 732 /* 733 * Tell the device to get going on the transfer if it's 734 * not doing anything, otherwise just wait for completion 735 */ 736 sdstart(sd->sc_periph); 737 738 splx(s); 739 return; 740 741 bad: 742 bp->b_flags |= B_ERROR; 743 done: 744 /* 745 * Correctly set the buf to indicate a completed xfer 746 */ 747 bp->b_resid = bp->b_bcount; 748 biodone(bp); 749 } 750 751 /* 752 * sdstart looks to see if there is a buf waiting for the device 753 * and that the device is not already busy. If both are true, 754 * It dequeues the buf and creates a scsi command to perform the 755 * transfer in the buf. The transfer request will call scsipi_done 756 * on completion, which will in turn call this routine again 757 * so that the next queued transfer is performed. 758 * The bufs are queued by the strategy routine (sdstrategy) 759 * 760 * This routine is also called after other non-queued requests 761 * have been made of the scsi driver, to ensure that the queue 762 * continues to be drained. 763 * 764 * must be called at the correct (highish) spl level 765 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 766 */ 767 static void 768 sdstart(struct scsipi_periph *periph) 769 { 770 struct sd_softc *sd = (void *)periph->periph_dev; 771 struct disklabel *lp = sd->sc_dk.dk_label; 772 struct buf *bp = 0; 773 struct scsipi_rw_16 cmd16; 774 struct scsipi_rw_10 cmd_big; 775 struct scsi_rw_6 cmd_small; 776 struct scsipi_generic *cmdp; 777 struct scsipi_xfer *xs; 778 int nblks, cmdlen, error, flags; 779 780 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 781 /* 782 * Check if the device has room for another command 783 */ 784 while (periph->periph_active < periph->periph_openings) { 785 /* 786 * there is excess capacity, but a special waits 787 * It'll need the adapter as soon as we clear out of the 788 * way and let it run (user level wait). 789 */ 790 if (periph->periph_flags & PERIPH_WAITING) { 791 periph->periph_flags &= ~PERIPH_WAITING; 792 wakeup((caddr_t)periph); 793 return; 794 } 795 796 /* 797 * If the device has become invalid, abort all the 798 * reads and writes until all files have been closed and 799 * re-opened 800 */ 801 if (__predict_false( 802 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 803 if ((bp = BUFQ_GET(sd->buf_queue)) != NULL) { 804 bp->b_error = EIO; 805 bp->b_flags |= B_ERROR; 806 bp->b_resid = bp->b_bcount; 807 biodone(bp); 808 continue; 809 } else { 810 return; 811 } 812 } 813 814 /* 815 * See if there is a buf with work for us to do.. 816 */ 817 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 818 return; 819 820 /* 821 * We have a buf, now we should make a command. 822 */ 823 824 if (lp->d_secsize == DEV_BSIZE) 825 nblks = bp->b_bcount >> DEV_BSHIFT; 826 else 827 nblks = howmany(bp->b_bcount, lp->d_secsize); 828 829 /* 830 * Fill out the scsi command. Use the smallest CDB possible 831 * (6-byte, 10-byte, or 16-byte). 832 */ 833 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 834 ((nblks & 0xff) == nblks) && 835 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 836 /* 6-byte CDB */ 837 memset(&cmd_small, 0, sizeof(cmd_small)); 838 cmd_small.opcode = (bp->b_flags & B_READ) ? 839 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 840 _lto3b(bp->b_rawblkno, cmd_small.addr); 841 cmd_small.length = nblks & 0xff; 842 cmdlen = sizeof(cmd_small); 843 cmdp = (struct scsipi_generic *)&cmd_small; 844 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 845 /* 10-byte CDB */ 846 memset(&cmd_big, 0, sizeof(cmd_big)); 847 cmd_big.opcode = (bp->b_flags & B_READ) ? 848 READ_10 : WRITE_10; 849 _lto4b(bp->b_rawblkno, cmd_big.addr); 850 _lto2b(nblks, cmd_big.length); 851 cmdlen = sizeof(cmd_big); 852 cmdp = (struct scsipi_generic *)&cmd_big; 853 } else { 854 /* 16-byte CDB */ 855 memset(&cmd16, 0, sizeof(cmd16)); 856 cmd16.opcode = (bp->b_flags & B_READ) ? 857 READ_16 : WRITE_16; 858 _lto8b(bp->b_rawblkno, cmd16.addr); 859 _lto4b(nblks, cmd16.length); 860 cmdlen = sizeof(cmd16); 861 cmdp = (struct scsipi_generic *)&cmd16; 862 } 863 864 /* Instrumentation. */ 865 disk_busy(&sd->sc_dk); 866 867 /* 868 * Mark the disk dirty so that the cache will be 869 * flushed on close. 870 */ 871 if ((bp->b_flags & B_READ) == 0) 872 sd->flags |= SDF_DIRTY; 873 874 /* 875 * Figure out what flags to use. 876 */ 877 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 878 if (bp->b_flags & B_READ) 879 flags |= XS_CTL_DATA_IN; 880 else 881 flags |= XS_CTL_DATA_OUT; 882 883 /* 884 * Call the routine that chats with the adapter. 885 * Note: we cannot sleep as we may be an interrupt 886 */ 887 xs = scsipi_make_xs(periph, cmdp, cmdlen, 888 (u_char *)bp->b_data, bp->b_bcount, 889 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 890 if (__predict_false(xs == NULL)) { 891 /* 892 * out of memory. Keep this buffer in the queue, and 893 * retry later. 894 */ 895 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 896 periph); 897 return; 898 } 899 /* 900 * need to dequeue the buffer before queuing the command, 901 * because cdstart may be called recursively from the 902 * HBA driver 903 */ 904 #ifdef DIAGNOSTIC 905 if (BUFQ_GET(sd->buf_queue) != bp) 906 panic("sdstart(): dequeued wrong buf"); 907 #else 908 BUFQ_GET(sd->buf_queue); 909 #endif 910 error = scsipi_execute_xs(xs); 911 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 912 KASSERT(error == 0); 913 } 914 } 915 916 static void 917 sdrestart(void *v) 918 { 919 int s = splbio(); 920 sdstart((struct scsipi_periph *)v); 921 splx(s); 922 } 923 924 static void 925 sddone(struct scsipi_xfer *xs, int error) 926 { 927 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 928 struct buf *bp = xs->bp; 929 930 if (sd->flags & SDF_FLUSHING) { 931 /* Flush completed, no longer dirty. */ 932 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 933 } 934 935 if (bp) { 936 bp->b_error = error; 937 bp->b_resid = xs->resid; 938 if (error) 939 bp->b_flags |= B_ERROR; 940 941 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 942 (bp->b_flags & B_READ)); 943 #if NRND > 0 944 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 945 #endif 946 947 biodone(bp); 948 } 949 } 950 951 static void 952 sdminphys(struct buf *bp) 953 { 954 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 955 long xmax; 956 957 /* 958 * If the device is ancient, we want to make sure that 959 * the transfer fits into a 6-byte cdb. 960 * 961 * XXX Note that the SCSI-I spec says that 256-block transfers 962 * are allowed in a 6-byte read/write, and are specified 963 * by settng the "length" to 0. However, we're conservative 964 * here, allowing only 255-block transfers in case an 965 * ancient device gets confused by length == 0. A length of 0 966 * in a 10-byte read/write actually means 0 blocks. 967 */ 968 if ((sd->flags & SDF_ANCIENT) && 969 ((sd->sc_periph->periph_flags & 970 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 971 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 972 973 if (bp->b_bcount > xmax) 974 bp->b_bcount = xmax; 975 } 976 977 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 978 } 979 980 static int 981 sdread(dev_t dev, struct uio *uio, int ioflag) 982 { 983 984 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 985 } 986 987 static int 988 sdwrite(dev_t dev, struct uio *uio, int ioflag) 989 { 990 991 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 992 } 993 994 /* 995 * Perform special action on behalf of the user 996 * Knows about the internals of this device 997 */ 998 static int 999 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l) 1000 { 1001 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1002 struct scsipi_periph *periph = sd->sc_periph; 1003 int part = SDPART(dev); 1004 int error = 0; 1005 #ifdef __HAVE_OLD_DISKLABEL 1006 struct disklabel *newlabel = NULL; 1007 #endif 1008 1009 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1010 1011 /* 1012 * If the device is not valid, some IOCTLs can still be 1013 * handled on the raw partition. Check this here. 1014 */ 1015 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1016 switch (cmd) { 1017 case DIOCKLABEL: 1018 case DIOCWLABEL: 1019 case DIOCLOCK: 1020 case DIOCEJECT: 1021 case ODIOCEJECT: 1022 case DIOCGCACHE: 1023 case DIOCSCACHE: 1024 case SCIOCIDENTIFY: 1025 case OSCIOCIDENTIFY: 1026 case SCIOCCOMMAND: 1027 case SCIOCDEBUG: 1028 if (part == RAW_PART) 1029 break; 1030 /* FALLTHROUGH */ 1031 default: 1032 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1033 return (ENODEV); 1034 else 1035 return (EIO); 1036 } 1037 } 1038 1039 switch (cmd) { 1040 case DIOCGDINFO: 1041 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1042 return (0); 1043 1044 #ifdef __HAVE_OLD_DISKLABEL 1045 case ODIOCGDINFO: 1046 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1047 if (newlabel == NULL) 1048 return EIO; 1049 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1050 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1051 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1052 else 1053 error = ENOTTY; 1054 free(newlabel, M_TEMP); 1055 return error; 1056 #endif 1057 1058 case DIOCGPART: 1059 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1060 ((struct partinfo *)addr)->part = 1061 &sd->sc_dk.dk_label->d_partitions[part]; 1062 return (0); 1063 1064 case DIOCWDINFO: 1065 case DIOCSDINFO: 1066 #ifdef __HAVE_OLD_DISKLABEL 1067 case ODIOCWDINFO: 1068 case ODIOCSDINFO: 1069 #endif 1070 { 1071 struct disklabel *lp; 1072 1073 if ((flag & FWRITE) == 0) 1074 return (EBADF); 1075 1076 #ifdef __HAVE_OLD_DISKLABEL 1077 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1078 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1079 if (newlabel == NULL) 1080 return EIO; 1081 memset(newlabel, 0, sizeof newlabel); 1082 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1083 lp = newlabel; 1084 } else 1085 #endif 1086 lp = (struct disklabel *)addr; 1087 1088 if ((error = lockmgr(&sd->sc_dk.dk_openlock, 1089 LK_EXCLUSIVE, NULL)) != 0) 1090 goto bad; 1091 sd->flags |= SDF_LABELLING; 1092 1093 error = setdisklabel(sd->sc_dk.dk_label, 1094 lp, /*sd->sc_dk.dk_openmask : */0, 1095 sd->sc_dk.dk_cpulabel); 1096 if (error == 0) { 1097 if (cmd == DIOCWDINFO 1098 #ifdef __HAVE_OLD_DISKLABEL 1099 || cmd == ODIOCWDINFO 1100 #endif 1101 ) 1102 error = writedisklabel(SDLABELDEV(dev), 1103 sdstrategy, sd->sc_dk.dk_label, 1104 sd->sc_dk.dk_cpulabel); 1105 } 1106 1107 sd->flags &= ~SDF_LABELLING; 1108 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1109 bad: 1110 #ifdef __HAVE_OLD_DISKLABEL 1111 if (newlabel != NULL) 1112 free(newlabel, M_TEMP); 1113 #endif 1114 return (error); 1115 } 1116 1117 case DIOCKLABEL: 1118 if (*(int *)addr) 1119 periph->periph_flags |= PERIPH_KEEP_LABEL; 1120 else 1121 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1122 return (0); 1123 1124 case DIOCWLABEL: 1125 if ((flag & FWRITE) == 0) 1126 return (EBADF); 1127 if (*(int *)addr) 1128 sd->flags |= SDF_WLABEL; 1129 else 1130 sd->flags &= ~SDF_WLABEL; 1131 return (0); 1132 1133 case DIOCLOCK: 1134 if (periph->periph_flags & PERIPH_REMOVABLE) 1135 return (scsipi_prevent(periph, 1136 (*(int *)addr) ? 1137 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1138 else 1139 return (ENOTTY); 1140 1141 case DIOCEJECT: 1142 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1143 return (ENOTTY); 1144 if (*(int *)addr == 0) { 1145 /* 1146 * Don't force eject: check that we are the only 1147 * partition open. If so, unlock it. 1148 */ 1149 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1150 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1151 sd->sc_dk.dk_openmask) { 1152 error = scsipi_prevent(periph, SPAMR_ALLOW, 1153 XS_CTL_IGNORE_NOT_READY); 1154 if (error) 1155 return (error); 1156 } else { 1157 return (EBUSY); 1158 } 1159 } 1160 /* FALLTHROUGH */ 1161 case ODIOCEJECT: 1162 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1163 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1164 1165 case DIOCGDEFLABEL: 1166 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1167 return (0); 1168 1169 #ifdef __HAVE_OLD_DISKLABEL 1170 case ODIOCGDEFLABEL: 1171 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1172 if (newlabel == NULL) 1173 return EIO; 1174 sdgetdefaultlabel(sd, newlabel); 1175 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1176 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1177 else 1178 error = ENOTTY; 1179 free(newlabel, M_TEMP); 1180 return error; 1181 #endif 1182 1183 case DIOCGCACHE: 1184 return (sd_getcache(sd, (int *) addr)); 1185 1186 case DIOCSCACHE: 1187 if ((flag & FWRITE) == 0) 1188 return (EBADF); 1189 return (sd_setcache(sd, *(int *) addr)); 1190 1191 case DIOCCACHESYNC: 1192 /* 1193 * XXX Do we really need to care about having a writable 1194 * file descriptor here? 1195 */ 1196 if ((flag & FWRITE) == 0) 1197 return (EBADF); 1198 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1199 error = sd_flush(sd, 0); 1200 if (error) 1201 sd->flags &= ~SDF_FLUSHING; 1202 else 1203 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1204 } else 1205 error = 0; 1206 return (error); 1207 1208 case DIOCAWEDGE: 1209 { 1210 struct dkwedge_info *dkw = (void *) addr; 1211 1212 if ((flag & FWRITE) == 0) 1213 return (EBADF); 1214 1215 /* If the ioctl happens here, the parent is us. */ 1216 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1217 return (dkwedge_add(dkw)); 1218 } 1219 1220 case DIOCDWEDGE: 1221 { 1222 struct dkwedge_info *dkw = (void *) addr; 1223 1224 if ((flag & FWRITE) == 0) 1225 return (EBADF); 1226 1227 /* If the ioctl happens here, the parent is us. */ 1228 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1229 return (dkwedge_del(dkw)); 1230 } 1231 1232 case DIOCLWEDGES: 1233 { 1234 struct dkwedge_list *dkwl = (void *) addr; 1235 1236 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1237 } 1238 1239 default: 1240 if (part != RAW_PART) 1241 return (ENOTTY); 1242 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1243 } 1244 1245 #ifdef DIAGNOSTIC 1246 panic("sdioctl: impossible"); 1247 #endif 1248 } 1249 1250 static void 1251 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1252 { 1253 1254 memset(lp, 0, sizeof(struct disklabel)); 1255 1256 lp->d_secsize = sd->params.blksize; 1257 lp->d_ntracks = sd->params.heads; 1258 lp->d_nsectors = sd->params.sectors; 1259 lp->d_ncylinders = sd->params.cyls; 1260 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1261 1262 switch (scsipi_periph_bustype(sd->sc_periph)) { 1263 case SCSIPI_BUSTYPE_SCSI: 1264 lp->d_type = DTYPE_SCSI; 1265 break; 1266 case SCSIPI_BUSTYPE_ATAPI: 1267 lp->d_type = DTYPE_ATAPI; 1268 break; 1269 } 1270 /* 1271 * XXX 1272 * We could probe the mode pages to figure out what kind of disc it is. 1273 * Is this worthwhile? 1274 */ 1275 strncpy(lp->d_typename, "mydisk", 16); 1276 strncpy(lp->d_packname, "fictitious", 16); 1277 lp->d_secperunit = sd->params.disksize; 1278 lp->d_rpm = sd->params.rot_rate; 1279 lp->d_interleave = 1; 1280 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1281 D_REMOVABLE : 0; 1282 1283 lp->d_partitions[RAW_PART].p_offset = 0; 1284 lp->d_partitions[RAW_PART].p_size = 1285 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1286 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1287 lp->d_npartitions = RAW_PART + 1; 1288 1289 lp->d_magic = DISKMAGIC; 1290 lp->d_magic2 = DISKMAGIC; 1291 lp->d_checksum = dkcksum(lp); 1292 } 1293 1294 1295 /* 1296 * Load the label information on the named device 1297 */ 1298 static int 1299 sdgetdisklabel(struct sd_softc *sd) 1300 { 1301 struct disklabel *lp = sd->sc_dk.dk_label; 1302 const char *errstring; 1303 1304 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1305 1306 sdgetdefaultlabel(sd, lp); 1307 1308 if (lp->d_secpercyl == 0) { 1309 lp->d_secpercyl = 100; 1310 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1311 } 1312 1313 /* 1314 * Call the generic disklabel extraction routine 1315 */ 1316 errstring = readdisklabel(MAKESDDEV(0, device_unit(&sd->sc_dev), 1317 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1318 if (errstring) { 1319 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1320 return EIO; 1321 } 1322 return 0; 1323 } 1324 1325 static void 1326 sd_shutdown(void *arg) 1327 { 1328 struct sd_softc *sd = arg; 1329 1330 /* 1331 * If the disk cache needs to be flushed, and the disk supports 1332 * it, flush it. We're cold at this point, so we poll for 1333 * completion. 1334 */ 1335 if ((sd->flags & SDF_DIRTY) != 0) { 1336 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1337 printf("%s: cache synchronization failed\n", 1338 sd->sc_dev.dv_xname); 1339 sd->flags &= ~SDF_FLUSHING; 1340 } else 1341 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1342 } 1343 } 1344 1345 /* 1346 * Check Errors 1347 */ 1348 static int 1349 sd_interpret_sense(struct scsipi_xfer *xs) 1350 { 1351 struct scsipi_periph *periph = xs->xs_periph; 1352 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1353 struct sd_softc *sd = (void *)periph->periph_dev; 1354 int s, error, retval = EJUSTRETURN; 1355 1356 /* 1357 * If the periph is already recovering, just do the normal 1358 * error processing. 1359 */ 1360 if (periph->periph_flags & PERIPH_RECOVERING) 1361 return (retval); 1362 1363 /* 1364 * Ignore errors from accessing illegal fields (e.g. trying to 1365 * lock the door of a digicam, which doesn't have a door that 1366 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1367 */ 1368 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1369 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1370 sense->asc == 0x24 && 1371 sense->ascq == 0x00) { /* Illegal field in CDB */ 1372 scsipi_printaddr(periph); 1373 printf("no door lock\n"); 1374 periph->periph_flags &= ~PERIPH_REMOVABLE; 1375 return 0; 1376 } 1377 1378 1379 1380 /* 1381 * If the device is not open yet, let the generic code handle it. 1382 */ 1383 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1384 return (retval); 1385 1386 /* 1387 * If it isn't a extended or extended/deferred error, let 1388 * the generic code handle it. 1389 */ 1390 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1391 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1392 return (retval); 1393 1394 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1395 sense->asc == 0x4) { 1396 if (sense->ascq == 0x01) { 1397 /* 1398 * Unit In The Process Of Becoming Ready. 1399 */ 1400 printf("%s: waiting for pack to spin up...\n", 1401 sd->sc_dev.dv_xname); 1402 if (!callout_pending(&periph->periph_callout)) 1403 scsipi_periph_freeze(periph, 1); 1404 callout_reset(&periph->periph_callout, 1405 5 * hz, scsipi_periph_timed_thaw, periph); 1406 retval = ERESTART; 1407 } else if (sense->ascq == 0x02) { 1408 printf("%s: pack is stopped, restarting...\n", 1409 sd->sc_dev.dv_xname); 1410 s = splbio(); 1411 periph->periph_flags |= PERIPH_RECOVERING; 1412 splx(s); 1413 error = scsipi_start(periph, SSS_START, 1414 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1415 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1416 if (error) { 1417 printf("%s: unable to restart pack\n", 1418 sd->sc_dev.dv_xname); 1419 retval = error; 1420 } else 1421 retval = ERESTART; 1422 s = splbio(); 1423 periph->periph_flags &= ~PERIPH_RECOVERING; 1424 splx(s); 1425 } 1426 } 1427 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1428 sense->asc == 0x31 && 1429 sense->ascq == 0x00) { /* maybe for any asq ? */ 1430 /* Medium Format Corrupted */ 1431 retval = EFTYPE; 1432 } 1433 return (retval); 1434 } 1435 1436 1437 static int 1438 sdsize(dev_t dev) 1439 { 1440 struct sd_softc *sd; 1441 int part, unit, omask; 1442 int size; 1443 1444 unit = SDUNIT(dev); 1445 if (unit >= sd_cd.cd_ndevs) 1446 return (-1); 1447 sd = sd_cd.cd_devs[unit]; 1448 if (sd == NULL) 1449 return (-1); 1450 1451 if (!device_is_active(&sd->sc_dev)) 1452 return (-1); 1453 1454 part = SDPART(dev); 1455 omask = sd->sc_dk.dk_openmask & (1 << part); 1456 1457 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1458 return (-1); 1459 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1460 size = -1; 1461 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1462 size = -1; 1463 else 1464 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1465 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1466 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1467 return (-1); 1468 return (size); 1469 } 1470 1471 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1472 static struct scsipi_xfer sx; 1473 static int sddoingadump; 1474 1475 /* 1476 * dump all of physical memory into the partition specified, starting 1477 * at offset 'dumplo' into the partition. 1478 */ 1479 static int 1480 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1481 { 1482 struct sd_softc *sd; /* disk unit to do the I/O */ 1483 struct disklabel *lp; /* disk's disklabel */ 1484 int unit, part; 1485 int sectorsize; /* size of a disk sector */ 1486 int nsects; /* number of sectors in partition */ 1487 int sectoff; /* sector offset of partition */ 1488 int totwrt; /* total number of sectors left to write */ 1489 int nwrt; /* current number of sectors to write */ 1490 struct scsipi_rw_10 cmd; /* write command */ 1491 struct scsipi_xfer *xs; /* ... convenience */ 1492 struct scsipi_periph *periph; 1493 struct scsipi_channel *chan; 1494 1495 /* Check if recursive dump; if so, punt. */ 1496 if (sddoingadump) 1497 return (EFAULT); 1498 1499 /* Mark as active early. */ 1500 sddoingadump = 1; 1501 1502 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1503 part = SDPART(dev); 1504 1505 /* Check for acceptable drive number. */ 1506 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1507 return (ENXIO); 1508 1509 if (!device_is_active(&sd->sc_dev)) 1510 return (ENODEV); 1511 1512 periph = sd->sc_periph; 1513 chan = periph->periph_channel; 1514 1515 /* Make sure it was initialized. */ 1516 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1517 return (ENXIO); 1518 1519 /* Convert to disk sectors. Request must be a multiple of size. */ 1520 lp = sd->sc_dk.dk_label; 1521 sectorsize = lp->d_secsize; 1522 if ((size % sectorsize) != 0) 1523 return (EFAULT); 1524 totwrt = size / sectorsize; 1525 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1526 1527 nsects = lp->d_partitions[part].p_size; 1528 sectoff = lp->d_partitions[part].p_offset; 1529 1530 /* Check transfer bounds against partition size. */ 1531 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1532 return (EINVAL); 1533 1534 /* Offset block number to start of partition. */ 1535 blkno += sectoff; 1536 1537 xs = &sx; 1538 1539 while (totwrt > 0) { 1540 nwrt = totwrt; /* XXX */ 1541 #ifndef SD_DUMP_NOT_TRUSTED 1542 /* 1543 * Fill out the scsi command 1544 */ 1545 memset(&cmd, 0, sizeof(cmd)); 1546 cmd.opcode = WRITE_10; 1547 _lto4b(blkno, cmd.addr); 1548 _lto2b(nwrt, cmd.length); 1549 /* 1550 * Fill out the scsipi_xfer structure 1551 * Note: we cannot sleep as we may be an interrupt 1552 * don't use scsipi_command() as it may want to wait 1553 * for an xs. 1554 */ 1555 memset(xs, 0, sizeof(sx)); 1556 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1557 XS_CTL_DATA_OUT; 1558 xs->xs_status = 0; 1559 xs->xs_periph = periph; 1560 xs->xs_retries = SDRETRIES; 1561 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1562 xs->cmd = (struct scsipi_generic *)&cmd; 1563 xs->cmdlen = sizeof(cmd); 1564 xs->resid = nwrt * sectorsize; 1565 xs->error = XS_NOERROR; 1566 xs->bp = 0; 1567 xs->data = va; 1568 xs->datalen = nwrt * sectorsize; 1569 1570 /* 1571 * Pass all this info to the scsi driver. 1572 */ 1573 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1574 if ((xs->xs_status & XS_STS_DONE) == 0 || 1575 xs->error != XS_NOERROR) 1576 return (EIO); 1577 #else /* SD_DUMP_NOT_TRUSTED */ 1578 /* Let's just talk about this first... */ 1579 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1580 delay(500 * 1000); /* half a second */ 1581 #endif /* SD_DUMP_NOT_TRUSTED */ 1582 1583 /* update block count */ 1584 totwrt -= nwrt; 1585 blkno += nwrt; 1586 va += sectorsize * nwrt; 1587 } 1588 sddoingadump = 0; 1589 return (0); 1590 } 1591 1592 static int 1593 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1594 int page, int flags, int *big) 1595 { 1596 1597 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1598 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1599 *big = 1; 1600 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1601 size + sizeof(struct scsi_mode_parameter_header_10), 1602 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1603 } else { 1604 *big = 0; 1605 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1606 size + sizeof(struct scsi_mode_parameter_header_6), 1607 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1608 } 1609 } 1610 1611 static int 1612 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1613 int flags, int big) 1614 { 1615 1616 if (big) { 1617 struct scsi_mode_parameter_header_10 *header = sense; 1618 1619 _lto2b(0, header->data_length); 1620 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1621 size + sizeof(struct scsi_mode_parameter_header_10), 1622 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1623 } else { 1624 struct scsi_mode_parameter_header_6 *header = sense; 1625 1626 header->data_length = 0; 1627 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1628 size + sizeof(struct scsi_mode_parameter_header_6), 1629 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1630 } 1631 } 1632 1633 static int 1634 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1635 { 1636 struct { 1637 struct scsi_mode_parameter_header_6 header; 1638 /* no block descriptor */ 1639 u_int8_t pg_code; /* page code (should be 6) */ 1640 u_int8_t pg_length; /* page length (should be 11) */ 1641 u_int8_t wcd; /* bit0: cache disable */ 1642 u_int8_t lbs[2]; /* logical block size */ 1643 u_int8_t size[5]; /* number of log. blocks */ 1644 u_int8_t pp; /* power/performance */ 1645 u_int8_t flags; 1646 u_int8_t resvd; 1647 } scsipi_sense; 1648 u_int64_t sectors; 1649 int error; 1650 1651 /* 1652 * scsipi_size (ie "read capacity") and mode sense page 6 1653 * give the same information. Do both for now, and check 1654 * for consistency. 1655 * XXX probably differs for removable media 1656 */ 1657 dp->blksize = 512; 1658 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1659 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1660 1661 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1662 &scsipi_sense.header, sizeof(scsipi_sense), 1663 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1664 1665 if (error != 0) 1666 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1667 1668 dp->blksize = _2btol(scsipi_sense.lbs); 1669 if (dp->blksize == 0) 1670 dp->blksize = 512; 1671 1672 /* 1673 * Create a pseudo-geometry. 1674 */ 1675 dp->heads = 64; 1676 dp->sectors = 32; 1677 dp->cyls = sectors / (dp->heads * dp->sectors); 1678 dp->disksize = _5btol(scsipi_sense.size); 1679 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1680 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1681 (unsigned long long)dp->disksize, 1682 (unsigned long long)sectors); 1683 dp->disksize = sectors; 1684 } 1685 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1686 1687 return (SDGP_RESULT_OK); 1688 } 1689 1690 /* 1691 * Get the scsi driver to send a full inquiry to the * device and use the 1692 * results to fill out the disk parameter structure. 1693 */ 1694 static int 1695 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1696 { 1697 u_int64_t sectors; 1698 int error; 1699 #if 0 1700 int i; 1701 u_int8_t *p; 1702 #endif 1703 1704 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1705 if (sectors == 0) { 1706 struct scsipi_read_format_capacities cmd; 1707 struct { 1708 struct scsipi_capacity_list_header header; 1709 struct scsipi_capacity_descriptor desc; 1710 } __attribute__((packed)) data; 1711 1712 memset(&cmd, 0, sizeof(cmd)); 1713 memset(&data, 0, sizeof(data)); 1714 cmd.opcode = READ_FORMAT_CAPACITIES; 1715 _lto2b(sizeof(data), cmd.length); 1716 1717 error = scsipi_command(sd->sc_periph, 1718 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1719 SDRETRIES, 20000, NULL, 1720 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1721 if (error == EFTYPE) { 1722 /* Medium Format Corrupted, handle as not formatted */ 1723 return (SDGP_RESULT_UNFORMATTED); 1724 } 1725 if (error || data.header.length == 0) 1726 return (SDGP_RESULT_OFFLINE); 1727 1728 #if 0 1729 printf("rfc: length=%d\n", data.header.length); 1730 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"); 1731 #endif 1732 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1733 case SCSIPI_CAP_DESC_CODE_RESERVED: 1734 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1735 break; 1736 1737 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1738 return (SDGP_RESULT_UNFORMATTED); 1739 1740 case SCSIPI_CAP_DESC_CODE_NONE: 1741 return (SDGP_RESULT_OFFLINE); 1742 } 1743 1744 dp->disksize = sectors = _4btol(data.desc.nblks); 1745 if (sectors == 0) 1746 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1747 1748 dp->blksize = _3btol(data.desc.blklen); 1749 if (dp->blksize == 0) 1750 dp->blksize = 512; 1751 } else { 1752 struct sd_mode_sense_data scsipi_sense; 1753 int big, bsize; 1754 struct scsi_general_block_descriptor *bdesc; 1755 1756 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1757 error = sd_mode_sense(sd, 0, &scsipi_sense, 1758 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1759 dp->blksize = 512; 1760 if (!error) { 1761 if (big) { 1762 bdesc = (void *)(&scsipi_sense.header.big + 1); 1763 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1764 } else { 1765 bdesc = (void *)(&scsipi_sense.header.small + 1); 1766 bsize = scsipi_sense.header.small.blk_desc_len; 1767 } 1768 1769 #if 0 1770 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1771 printf("page 0 bsize=%d\n", bsize); 1772 printf("page 0 ok\n"); 1773 #endif 1774 1775 if (bsize >= 8) { 1776 dp->blksize = _3btol(bdesc->blklen); 1777 if (dp->blksize == 0) 1778 dp->blksize = 512; 1779 } 1780 } 1781 } 1782 1783 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1784 return (0); 1785 } 1786 1787 static int 1788 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1789 { 1790 struct sd_mode_sense_data scsipi_sense; 1791 int error; 1792 int big, poffset, byte2; 1793 union scsi_disk_pages *pages; 1794 #if 0 1795 int i; 1796 u_int8_t *p; 1797 #endif 1798 1799 byte2 = SMS_DBD; 1800 again: 1801 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1802 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1803 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1804 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1805 flags | XS_CTL_SILENT, &big); 1806 if (error) { 1807 if (byte2 == SMS_DBD) { 1808 /* No result; try once more with DBD off */ 1809 byte2 = 0; 1810 goto again; 1811 } 1812 return (error); 1813 } 1814 1815 if (big) { 1816 poffset = sizeof scsipi_sense.header.big; 1817 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1818 } else { 1819 poffset = sizeof scsipi_sense.header.small; 1820 poffset += scsipi_sense.header.small.blk_desc_len; 1821 } 1822 1823 pages = (void *)((u_long)&scsipi_sense + poffset); 1824 #if 0 1825 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1826 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1827 #endif 1828 1829 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1830 return (ERESTART); 1831 1832 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1833 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1834 _3btol(pages->rigid_geometry.ncyl), 1835 pages->rigid_geometry.nheads, 1836 _2btol(pages->rigid_geometry.st_cyl_wp), 1837 _2btol(pages->rigid_geometry.st_cyl_rwc), 1838 _2btol(pages->rigid_geometry.land_zone))); 1839 1840 /* 1841 * KLUDGE!! (for zone recorded disks) 1842 * give a number of sectors so that sec * trks * cyls 1843 * is <= disk_size 1844 * can lead to wasted space! THINK ABOUT THIS ! 1845 */ 1846 dp->heads = pages->rigid_geometry.nheads; 1847 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1848 if (dp->heads == 0 || dp->cyls == 0) 1849 return (ERESTART); 1850 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1851 1852 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1853 if (dp->rot_rate == 0) 1854 dp->rot_rate = 3600; 1855 1856 #if 0 1857 printf("page 4 ok\n"); 1858 #endif 1859 return (0); 1860 } 1861 1862 static int 1863 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1864 { 1865 struct sd_mode_sense_data scsipi_sense; 1866 int error; 1867 int big, poffset, byte2; 1868 union scsi_disk_pages *pages; 1869 #if 0 1870 int i; 1871 u_int8_t *p; 1872 #endif 1873 1874 byte2 = SMS_DBD; 1875 again: 1876 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1877 error = sd_mode_sense(sd, 0, &scsipi_sense, 1878 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1879 sizeof(scsipi_sense.pages.flex_geometry), 5, 1880 flags | XS_CTL_SILENT, &big); 1881 if (error) { 1882 if (byte2 == SMS_DBD) { 1883 /* No result; try once more with DBD off */ 1884 byte2 = 0; 1885 goto again; 1886 } 1887 return (error); 1888 } 1889 1890 if (big) { 1891 poffset = sizeof scsipi_sense.header.big; 1892 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1893 } else { 1894 poffset = sizeof scsipi_sense.header.small; 1895 poffset += scsipi_sense.header.small.blk_desc_len; 1896 } 1897 1898 pages = (void *)((u_long)&scsipi_sense + poffset); 1899 #if 0 1900 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1901 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1902 #endif 1903 1904 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1905 return (ERESTART); 1906 1907 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1908 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1909 _3btol(pages->flex_geometry.ncyl), 1910 pages->flex_geometry.nheads, 1911 pages->flex_geometry.ph_sec_tr, 1912 _2btol(pages->flex_geometry.bytes_s))); 1913 1914 dp->heads = pages->flex_geometry.nheads; 1915 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1916 dp->sectors = pages->flex_geometry.ph_sec_tr; 1917 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1918 return (ERESTART); 1919 1920 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1921 if (dp->rot_rate == 0) 1922 dp->rot_rate = 3600; 1923 1924 #if 0 1925 printf("page 5 ok\n"); 1926 #endif 1927 return (0); 1928 } 1929 1930 static int 1931 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1932 { 1933 int error; 1934 1935 /* 1936 * If offline, the SDEV_MEDIA_LOADED flag will be 1937 * cleared by the caller if necessary. 1938 */ 1939 if (sd->type == T_SIMPLE_DIRECT) 1940 return (sd_get_simplifiedparms(sd, dp, flags)); 1941 1942 error = sd_get_capacity(sd, dp, flags); 1943 if (error) 1944 return (error); 1945 1946 if (sd->type == T_OPTICAL) 1947 goto page0; 1948 1949 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1950 if (!sd_get_parms_page5(sd, dp, flags) || 1951 !sd_get_parms_page4(sd, dp, flags)) 1952 return (SDGP_RESULT_OK); 1953 } else { 1954 if (!sd_get_parms_page4(sd, dp, flags) || 1955 !sd_get_parms_page5(sd, dp, flags)) 1956 return (SDGP_RESULT_OK); 1957 } 1958 1959 page0: 1960 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1961 /* Try calling driver's method for figuring out geometry. */ 1962 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1963 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1964 (sd->sc_periph, dp, dp->disksize)) { 1965 /* 1966 * Use adaptec standard fictitious geometry 1967 * this depends on which controller (e.g. 1542C is 1968 * different. but we have to put SOMETHING here..) 1969 */ 1970 dp->heads = 64; 1971 dp->sectors = 32; 1972 dp->cyls = dp->disksize / (64 * 32); 1973 } 1974 dp->rot_rate = 3600; 1975 return (SDGP_RESULT_OK); 1976 } 1977 1978 static int 1979 sd_flush(struct sd_softc *sd, int flags) 1980 { 1981 struct scsipi_periph *periph = sd->sc_periph; 1982 struct scsi_synchronize_cache_10 cmd; 1983 1984 /* 1985 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1986 * We issue with address 0 length 0, which should be 1987 * interpreted by the device as "all remaining blocks 1988 * starting at address 0". We ignore ILLEGAL REQUEST 1989 * in the event that the command is not supported by 1990 * the device, and poll for completion so that we know 1991 * that the cache has actually been flushed. 1992 * 1993 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1994 * command, as indicated by our quirks flags. 1995 * 1996 * XXX What about older devices? 1997 */ 1998 if (periph->periph_version < 2 || 1999 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2000 return (0); 2001 2002 sd->flags |= SDF_FLUSHING; 2003 memset(&cmd, 0, sizeof(cmd)); 2004 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2005 2006 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2007 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2008 } 2009 2010 static int 2011 sd_getcache(struct sd_softc *sd, int *bitsp) 2012 { 2013 struct scsipi_periph *periph = sd->sc_periph; 2014 struct sd_mode_sense_data scsipi_sense; 2015 int error, bits = 0; 2016 int big; 2017 union scsi_disk_pages *pages; 2018 2019 if (periph->periph_version < 2) 2020 return (EOPNOTSUPP); 2021 2022 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2023 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2024 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2025 if (error) 2026 return (error); 2027 2028 if (big) 2029 pages = (void *)(&scsipi_sense.header.big + 1); 2030 else 2031 pages = (void *)(&scsipi_sense.header.small + 1); 2032 2033 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2034 bits |= DKCACHE_READ; 2035 if (pages->caching_params.flags & CACHING_WCE) 2036 bits |= DKCACHE_WRITE; 2037 if (pages->caching_params.pg_code & PGCODE_PS) 2038 bits |= DKCACHE_SAVE; 2039 2040 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2041 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2042 sizeof(scsipi_sense.pages.caching_params), 2043 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2044 if (error == 0) { 2045 if (big) 2046 pages = (void *)(&scsipi_sense.header.big + 1); 2047 else 2048 pages = (void *)(&scsipi_sense.header.small + 1); 2049 2050 if (pages->caching_params.flags & CACHING_RCD) 2051 bits |= DKCACHE_RCHANGE; 2052 if (pages->caching_params.flags & CACHING_WCE) 2053 bits |= DKCACHE_WCHANGE; 2054 } 2055 2056 *bitsp = bits; 2057 2058 return (0); 2059 } 2060 2061 static int 2062 sd_setcache(struct sd_softc *sd, int bits) 2063 { 2064 struct scsipi_periph *periph = sd->sc_periph; 2065 struct sd_mode_sense_data scsipi_sense; 2066 int error; 2067 uint8_t oflags, byte2 = 0; 2068 int big; 2069 union scsi_disk_pages *pages; 2070 2071 if (periph->periph_version < 2) 2072 return (EOPNOTSUPP); 2073 2074 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2075 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2076 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2077 if (error) 2078 return (error); 2079 2080 if (big) 2081 pages = (void *)(&scsipi_sense.header.big + 1); 2082 else 2083 pages = (void *)(&scsipi_sense.header.small + 1); 2084 2085 oflags = pages->caching_params.flags; 2086 2087 if (bits & DKCACHE_READ) 2088 pages->caching_params.flags &= ~CACHING_RCD; 2089 else 2090 pages->caching_params.flags |= CACHING_RCD; 2091 2092 if (bits & DKCACHE_WRITE) 2093 pages->caching_params.flags |= CACHING_WCE; 2094 else 2095 pages->caching_params.flags &= ~CACHING_WCE; 2096 2097 if (oflags == pages->caching_params.flags) 2098 return (0); 2099 2100 pages->caching_params.pg_code &= PGCODE_MASK; 2101 2102 if (bits & DKCACHE_SAVE) 2103 byte2 |= SMS_SP; 2104 2105 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2106 sizeof(struct scsi_mode_page_header) + 2107 pages->caching_params.pg_length, 0, big)); 2108 } 2109
Indexes created Tue Sep 23 07:09:52 GMT 2025