sd.c revision 1.243
1 /* $NetBSD: sd.c,v 1.243 2005/12/09 09:24:30 bouyer 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 1.243 2005/12/09 09:24:30 bouyer 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 void 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 = (void *)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 = (struct sd_softc *) 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(self->dv_unit, i); 358 vdevgone(bmaj, mn, mn, VBLK); 359 vdevgone(cmaj, mn, mn, VCHR); 360 } 361 362 /* kill any pending restart */ 363 callout_stop(&sd->sc_callout); 364 365 /* Delete all of our wedges. */ 366 dkwedge_delall(&sd->sc_dk); 367 368 s = splbio(); 369 370 /* Kill off any queued buffers. */ 371 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 proc *p) 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 ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 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 sdgetdisklabel(sd); 529 SC_DEBUG(periph, SCSIPI_DB3, 530 ("Disklabel loaded ")); 531 } 532 } 533 } 534 535 /* Check that the partition exists. */ 536 if (part != RAW_PART && 537 (part >= sd->sc_dk.dk_label->d_npartitions || 538 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 539 error = ENXIO; 540 goto bad3; 541 } 542 543 out: /* Insure only one open at a time. */ 544 switch (fmt) { 545 case S_IFCHR: 546 sd->sc_dk.dk_copenmask |= (1 << part); 547 break; 548 case S_IFBLK: 549 sd->sc_dk.dk_bopenmask |= (1 << part); 550 break; 551 } 552 sd->sc_dk.dk_openmask = 553 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 554 555 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 556 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 557 return (0); 558 559 bad3: 560 if (sd->sc_dk.dk_openmask == 0) { 561 if (periph->periph_flags & PERIPH_REMOVABLE) 562 scsipi_prevent(periph, SPAMR_ALLOW, 563 XS_CTL_IGNORE_ILLEGAL_REQUEST | 564 XS_CTL_IGNORE_MEDIA_CHANGE); 565 periph->periph_flags &= ~PERIPH_OPEN; 566 } 567 568 bad2: 569 if (sd->sc_dk.dk_openmask == 0) 570 scsipi_adapter_delref(adapt); 571 572 bad1: 573 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 574 return (error); 575 } 576 577 /* 578 * close the device.. only called if we are the LAST occurence of an open 579 * device. Convenient now but usually a pain. 580 */ 581 static int 582 sdclose(dev_t dev, int flag, int fmt, struct proc *p) 583 { 584 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 585 struct scsipi_periph *periph = sd->sc_periph; 586 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 587 int part = SDPART(dev); 588 int error; 589 590 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 591 return (error); 592 593 switch (fmt) { 594 case S_IFCHR: 595 sd->sc_dk.dk_copenmask &= ~(1 << part); 596 break; 597 case S_IFBLK: 598 sd->sc_dk.dk_bopenmask &= ~(1 << part); 599 break; 600 } 601 sd->sc_dk.dk_openmask = 602 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 603 604 if (sd->sc_dk.dk_openmask == 0) { 605 /* 606 * If the disk cache needs flushing, and the disk supports 607 * it, do it now. 608 */ 609 if ((sd->flags & SDF_DIRTY) != 0) { 610 if (sd_flush(sd, 0)) { 611 printf("%s: cache synchronization failed\n", 612 sd->sc_dev.dv_xname); 613 sd->flags &= ~SDF_FLUSHING; 614 } else 615 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 616 } 617 618 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 619 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 620 621 scsipi_wait_drain(periph); 622 623 if (periph->periph_flags & PERIPH_REMOVABLE) 624 scsipi_prevent(periph, SPAMR_ALLOW, 625 XS_CTL_IGNORE_ILLEGAL_REQUEST | 626 XS_CTL_IGNORE_NOT_READY); 627 periph->periph_flags &= ~PERIPH_OPEN; 628 629 scsipi_wait_drain(periph); 630 631 scsipi_adapter_delref(adapt); 632 } 633 634 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 635 return (0); 636 } 637 638 /* 639 * Actually translate the requested transfer into one the physical driver 640 * can understand. The transfer is described by a buf and will include 641 * only one physical transfer. 642 */ 643 static void 644 sdstrategy(struct buf *bp) 645 { 646 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 647 struct scsipi_periph *periph = sd->sc_periph; 648 struct disklabel *lp; 649 daddr_t blkno; 650 int s; 651 boolean_t sector_aligned; 652 653 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 654 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 655 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 656 /* 657 * If the device has been made invalid, error out 658 */ 659 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 660 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 661 if (periph->periph_flags & PERIPH_OPEN) 662 bp->b_error = EIO; 663 else 664 bp->b_error = ENODEV; 665 goto bad; 666 } 667 668 lp = sd->sc_dk.dk_label; 669 670 /* 671 * The transfer must be a whole number of blocks, offset must not be 672 * negative. 673 */ 674 if (lp->d_secsize == DEV_BSIZE) { 675 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 676 } else { 677 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 678 } 679 if (!sector_aligned || bp->b_blkno < 0) { 680 bp->b_error = EINVAL; 681 goto bad; 682 } 683 /* 684 * If it's a null transfer, return immediatly 685 */ 686 if (bp->b_bcount == 0) 687 goto done; 688 689 /* 690 * Do bounds checking, adjust transfer. if error, process. 691 * If end of partition, just return. 692 */ 693 if (SDPART(bp->b_dev) == RAW_PART) { 694 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 695 sd->params.disksize512) <= 0) 696 goto done; 697 } else { 698 if (bounds_check_with_label(&sd->sc_dk, bp, 699 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 700 goto done; 701 } 702 703 /* 704 * Now convert the block number to absolute and put it in 705 * terms of the device's logical block size. 706 */ 707 if (lp->d_secsize == DEV_BSIZE) 708 blkno = bp->b_blkno; 709 else if (lp->d_secsize > DEV_BSIZE) 710 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 711 else 712 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 713 714 if (SDPART(bp->b_dev) != RAW_PART) 715 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 716 717 bp->b_rawblkno = blkno; 718 719 s = splbio(); 720 721 /* 722 * Place it in the queue of disk activities for this disk. 723 * 724 * XXX Only do disksort() if the current operating mode does not 725 * XXX include tagged queueing. 726 */ 727 BUFQ_PUT(sd->buf_queue, bp); 728 729 /* 730 * Tell the device to get going on the transfer if it's 731 * not doing anything, otherwise just wait for completion 732 */ 733 sdstart(sd->sc_periph); 734 735 splx(s); 736 return; 737 738 bad: 739 bp->b_flags |= B_ERROR; 740 done: 741 /* 742 * Correctly set the buf to indicate a completed xfer 743 */ 744 bp->b_resid = bp->b_bcount; 745 biodone(bp); 746 } 747 748 /* 749 * sdstart looks to see if there is a buf waiting for the device 750 * and that the device is not already busy. If both are true, 751 * It dequeues the buf and creates a scsi command to perform the 752 * transfer in the buf. The transfer request will call scsipi_done 753 * on completion, which will in turn call this routine again 754 * so that the next queued transfer is performed. 755 * The bufs are queued by the strategy routine (sdstrategy) 756 * 757 * This routine is also called after other non-queued requests 758 * have been made of the scsi driver, to ensure that the queue 759 * continues to be drained. 760 * 761 * must be called at the correct (highish) spl level 762 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 763 */ 764 static void 765 sdstart(struct scsipi_periph *periph) 766 { 767 struct sd_softc *sd = (void *)periph->periph_dev; 768 struct disklabel *lp = sd->sc_dk.dk_label; 769 struct buf *bp = 0; 770 struct scsipi_rw_16 cmd16; 771 struct scsipi_rw_10 cmd_big; 772 struct scsi_rw_6 cmd_small; 773 struct scsipi_generic *cmdp; 774 struct scsipi_xfer *xs; 775 int nblks, cmdlen, error, flags; 776 777 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 778 /* 779 * Check if the device has room for another command 780 */ 781 while (periph->periph_active < periph->periph_openings) { 782 /* 783 * there is excess capacity, but a special waits 784 * It'll need the adapter as soon as we clear out of the 785 * way and let it run (user level wait). 786 */ 787 if (periph->periph_flags & PERIPH_WAITING) { 788 periph->periph_flags &= ~PERIPH_WAITING; 789 wakeup((caddr_t)periph); 790 return; 791 } 792 793 /* 794 * If the device has become invalid, abort all the 795 * reads and writes until all files have been closed and 796 * re-opened 797 */ 798 if (__predict_false( 799 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 800 if ((bp = BUFQ_GET(sd->buf_queue)) != NULL) { 801 bp->b_error = EIO; 802 bp->b_flags |= B_ERROR; 803 bp->b_resid = bp->b_bcount; 804 biodone(bp); 805 continue; 806 } else { 807 return; 808 } 809 } 810 811 /* 812 * See if there is a buf with work for us to do.. 813 */ 814 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 815 return; 816 817 /* 818 * We have a buf, now we should make a command. 819 */ 820 821 if (lp->d_secsize == DEV_BSIZE) 822 nblks = bp->b_bcount >> DEV_BSHIFT; 823 else 824 nblks = howmany(bp->b_bcount, lp->d_secsize); 825 826 /* 827 * Fill out the scsi command. Use the smallest CDB possible 828 * (6-byte, 10-byte, or 16-byte). 829 */ 830 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 831 ((nblks & 0xff) == nblks) && 832 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 833 /* 6-byte CDB */ 834 memset(&cmd_small, 0, sizeof(cmd_small)); 835 cmd_small.opcode = (bp->b_flags & B_READ) ? 836 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 837 _lto3b(bp->b_rawblkno, cmd_small.addr); 838 cmd_small.length = nblks & 0xff; 839 cmdlen = sizeof(cmd_small); 840 cmdp = (struct scsipi_generic *)&cmd_small; 841 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 842 /* 10-byte CDB */ 843 memset(&cmd_big, 0, sizeof(cmd_big)); 844 cmd_big.opcode = (bp->b_flags & B_READ) ? 845 READ_10 : WRITE_10; 846 _lto4b(bp->b_rawblkno, cmd_big.addr); 847 _lto2b(nblks, cmd_big.length); 848 cmdlen = sizeof(cmd_big); 849 cmdp = (struct scsipi_generic *)&cmd_big; 850 } else { 851 /* 16-byte CDB */ 852 memset(&cmd16, 0, sizeof(cmd16)); 853 cmd16.opcode = (bp->b_flags & B_READ) ? 854 READ_16 : WRITE_16; 855 _lto8b(bp->b_rawblkno, cmd16.addr); 856 _lto4b(nblks, cmd16.length); 857 cmdlen = sizeof(cmd16); 858 cmdp = (struct scsipi_generic *)&cmd16; 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 xmax; 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 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 969 970 if (bp->b_bcount > xmax) 971 bp->b_bcount = xmax; 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 if (periph->periph_flags & PERIPH_REMOVABLE) 1132 return (scsipi_prevent(periph, 1133 (*(int *)addr) ? 1134 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1135 else 1136 return (ENOTTY); 1137 1138 case DIOCEJECT: 1139 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1140 return (ENOTTY); 1141 if (*(int *)addr == 0) { 1142 /* 1143 * Don't force eject: check that we are the only 1144 * partition open. If so, unlock it. 1145 */ 1146 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1147 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1148 sd->sc_dk.dk_openmask) { 1149 error = scsipi_prevent(periph, SPAMR_ALLOW, 1150 XS_CTL_IGNORE_NOT_READY); 1151 if (error) 1152 return (error); 1153 } else { 1154 return (EBUSY); 1155 } 1156 } 1157 /* FALLTHROUGH */ 1158 case ODIOCEJECT: 1159 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1160 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1161 1162 case DIOCGDEFLABEL: 1163 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1164 return (0); 1165 1166 #ifdef __HAVE_OLD_DISKLABEL 1167 case ODIOCGDEFLABEL: 1168 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1169 if (newlabel == NULL) 1170 return EIO; 1171 sdgetdefaultlabel(sd, newlabel); 1172 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1173 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1174 else 1175 error = ENOTTY; 1176 free(newlabel, M_TEMP); 1177 return error; 1178 #endif 1179 1180 case DIOCGCACHE: 1181 return (sd_getcache(sd, (int *) addr)); 1182 1183 case DIOCSCACHE: 1184 if ((flag & FWRITE) == 0) 1185 return (EBADF); 1186 return (sd_setcache(sd, *(int *) addr)); 1187 1188 case DIOCCACHESYNC: 1189 /* 1190 * XXX Do we really need to care about having a writable 1191 * file descriptor here? 1192 */ 1193 if ((flag & FWRITE) == 0) 1194 return (EBADF); 1195 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1196 error = sd_flush(sd, 0); 1197 if (error) 1198 sd->flags &= ~SDF_FLUSHING; 1199 else 1200 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1201 } else 1202 error = 0; 1203 return (error); 1204 1205 case DIOCAWEDGE: 1206 { 1207 struct dkwedge_info *dkw = (void *) addr; 1208 1209 if ((flag & FWRITE) == 0) 1210 return (EBADF); 1211 1212 /* If the ioctl happens here, the parent is us. */ 1213 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1214 return (dkwedge_add(dkw)); 1215 } 1216 1217 case DIOCDWEDGE: 1218 { 1219 struct dkwedge_info *dkw = (void *) addr; 1220 1221 if ((flag & FWRITE) == 0) 1222 return (EBADF); 1223 1224 /* If the ioctl happens here, the parent is us. */ 1225 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1226 return (dkwedge_del(dkw)); 1227 } 1228 1229 case DIOCLWEDGES: 1230 { 1231 struct dkwedge_list *dkwl = (void *) addr; 1232 1233 return (dkwedge_list(&sd->sc_dk, dkwl, p)); 1234 } 1235 1236 default: 1237 if (part != RAW_PART) 1238 return (ENOTTY); 1239 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1240 } 1241 1242 #ifdef DIAGNOSTIC 1243 panic("sdioctl: impossible"); 1244 #endif 1245 } 1246 1247 static void 1248 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1249 { 1250 1251 memset(lp, 0, sizeof(struct disklabel)); 1252 1253 lp->d_secsize = sd->params.blksize; 1254 lp->d_ntracks = sd->params.heads; 1255 lp->d_nsectors = sd->params.sectors; 1256 lp->d_ncylinders = sd->params.cyls; 1257 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1258 1259 switch (scsipi_periph_bustype(sd->sc_periph)) { 1260 case SCSIPI_BUSTYPE_SCSI: 1261 lp->d_type = DTYPE_SCSI; 1262 break; 1263 case SCSIPI_BUSTYPE_ATAPI: 1264 lp->d_type = DTYPE_ATAPI; 1265 break; 1266 } 1267 /* 1268 * XXX 1269 * We could probe the mode pages to figure out what kind of disc it is. 1270 * Is this worthwhile? 1271 */ 1272 strncpy(lp->d_typename, "mydisk", 16); 1273 strncpy(lp->d_packname, "fictitious", 16); 1274 lp->d_secperunit = sd->params.disksize; 1275 lp->d_rpm = sd->params.rot_rate; 1276 lp->d_interleave = 1; 1277 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1278 D_REMOVABLE : 0; 1279 1280 lp->d_partitions[RAW_PART].p_offset = 0; 1281 lp->d_partitions[RAW_PART].p_size = 1282 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1283 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1284 lp->d_npartitions = RAW_PART + 1; 1285 1286 lp->d_magic = DISKMAGIC; 1287 lp->d_magic2 = DISKMAGIC; 1288 lp->d_checksum = dkcksum(lp); 1289 } 1290 1291 1292 /* 1293 * Load the label information on the named device 1294 */ 1295 static void 1296 sdgetdisklabel(struct sd_softc *sd) 1297 { 1298 struct disklabel *lp = sd->sc_dk.dk_label; 1299 const char *errstring; 1300 1301 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1302 1303 sdgetdefaultlabel(sd, lp); 1304 1305 if (lp->d_secpercyl == 0) { 1306 lp->d_secpercyl = 100; 1307 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1308 } 1309 1310 /* 1311 * Call the generic disklabel extraction routine 1312 */ 1313 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1314 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1315 if (errstring) { 1316 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1317 return; 1318 } 1319 } 1320 1321 static void 1322 sd_shutdown(void *arg) 1323 { 1324 struct sd_softc *sd = arg; 1325 1326 /* 1327 * If the disk cache needs to be flushed, and the disk supports 1328 * it, flush it. We're cold at this point, so we poll for 1329 * completion. 1330 */ 1331 if ((sd->flags & SDF_DIRTY) != 0) { 1332 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1333 printf("%s: cache synchronization failed\n", 1334 sd->sc_dev.dv_xname); 1335 sd->flags &= ~SDF_FLUSHING; 1336 } else 1337 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1338 } 1339 } 1340 1341 /* 1342 * Check Errors 1343 */ 1344 static int 1345 sd_interpret_sense(struct scsipi_xfer *xs) 1346 { 1347 struct scsipi_periph *periph = xs->xs_periph; 1348 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1349 struct sd_softc *sd = (void *)periph->periph_dev; 1350 int s, error, retval = EJUSTRETURN; 1351 1352 /* 1353 * If the periph is already recovering, just do the normal 1354 * error processing. 1355 */ 1356 if (periph->periph_flags & PERIPH_RECOVERING) 1357 return (retval); 1358 1359 /* 1360 * Ignore errors from accessing illegal fields (e.g. trying to 1361 * lock the door of a digicam, which doesn't have a door that 1362 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1363 */ 1364 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1365 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1366 sense->asc == 0x24 && 1367 sense->ascq == 0x00) { /* Illegal field in CDB */ 1368 scsipi_printaddr(periph); 1369 printf("no door lock\n"); 1370 periph->periph_flags &= ~PERIPH_REMOVABLE; 1371 return 0; 1372 } 1373 1374 1375 1376 /* 1377 * If the device is not open yet, let the generic code handle it. 1378 */ 1379 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1380 return (retval); 1381 1382 /* 1383 * If it isn't a extended or extended/deferred error, let 1384 * the generic code handle it. 1385 */ 1386 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1387 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1388 return (retval); 1389 1390 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1391 sense->asc == 0x4) { 1392 if (sense->ascq == 0x01) { 1393 /* 1394 * Unit In The Process Of Becoming Ready. 1395 */ 1396 printf("%s: waiting for pack to spin up...\n", 1397 sd->sc_dev.dv_xname); 1398 if (!callout_pending(&periph->periph_callout)) 1399 scsipi_periph_freeze(periph, 1); 1400 callout_reset(&periph->periph_callout, 1401 5 * hz, scsipi_periph_timed_thaw, periph); 1402 retval = ERESTART; 1403 } else if (sense->ascq == 0x02) { 1404 printf("%s: pack is stopped, restarting...\n", 1405 sd->sc_dev.dv_xname); 1406 s = splbio(); 1407 periph->periph_flags |= PERIPH_RECOVERING; 1408 splx(s); 1409 error = scsipi_start(periph, SSS_START, 1410 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1411 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1412 if (error) { 1413 printf("%s: unable to restart pack\n", 1414 sd->sc_dev.dv_xname); 1415 retval = error; 1416 } else 1417 retval = ERESTART; 1418 s = splbio(); 1419 periph->periph_flags &= ~PERIPH_RECOVERING; 1420 splx(s); 1421 } 1422 } 1423 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1424 sense->asc == 0x31 && 1425 sense->ascq == 0x00) { /* maybe for any asq ? */ 1426 /* Medium Format Corrupted */ 1427 retval = EFTYPE; 1428 } 1429 return (retval); 1430 } 1431 1432 1433 static int 1434 sdsize(dev_t dev) 1435 { 1436 struct sd_softc *sd; 1437 int part, unit, omask; 1438 int size; 1439 1440 unit = SDUNIT(dev); 1441 if (unit >= sd_cd.cd_ndevs) 1442 return (-1); 1443 sd = sd_cd.cd_devs[unit]; 1444 if (sd == NULL) 1445 return (-1); 1446 1447 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1448 return (-1); 1449 1450 part = SDPART(dev); 1451 omask = sd->sc_dk.dk_openmask & (1 << part); 1452 1453 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1454 return (-1); 1455 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1456 size = -1; 1457 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1458 size = -1; 1459 else 1460 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1461 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1462 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1463 return (-1); 1464 return (size); 1465 } 1466 1467 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1468 static struct scsipi_xfer sx; 1469 static int sddoingadump; 1470 1471 /* 1472 * dump all of physical memory into the partition specified, starting 1473 * at offset 'dumplo' into the partition. 1474 */ 1475 static int 1476 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1477 { 1478 struct sd_softc *sd; /* disk unit to do the I/O */ 1479 struct disklabel *lp; /* disk's disklabel */ 1480 int unit, part; 1481 int sectorsize; /* size of a disk sector */ 1482 int nsects; /* number of sectors in partition */ 1483 int sectoff; /* sector offset of partition */ 1484 int totwrt; /* total number of sectors left to write */ 1485 int nwrt; /* current number of sectors to write */ 1486 struct scsipi_rw_10 cmd; /* write command */ 1487 struct scsipi_xfer *xs; /* ... convenience */ 1488 struct scsipi_periph *periph; 1489 struct scsipi_channel *chan; 1490 1491 /* Check if recursive dump; if so, punt. */ 1492 if (sddoingadump) 1493 return (EFAULT); 1494 1495 /* Mark as active early. */ 1496 sddoingadump = 1; 1497 1498 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1499 part = SDPART(dev); 1500 1501 /* Check for acceptable drive number. */ 1502 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1503 return (ENXIO); 1504 1505 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1506 return (ENODEV); 1507 1508 periph = sd->sc_periph; 1509 chan = periph->periph_channel; 1510 1511 /* Make sure it was initialized. */ 1512 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1513 return (ENXIO); 1514 1515 /* Convert to disk sectors. Request must be a multiple of size. */ 1516 lp = sd->sc_dk.dk_label; 1517 sectorsize = lp->d_secsize; 1518 if ((size % sectorsize) != 0) 1519 return (EFAULT); 1520 totwrt = size / sectorsize; 1521 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1522 1523 nsects = lp->d_partitions[part].p_size; 1524 sectoff = lp->d_partitions[part].p_offset; 1525 1526 /* Check transfer bounds against partition size. */ 1527 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1528 return (EINVAL); 1529 1530 /* Offset block number to start of partition. */ 1531 blkno += sectoff; 1532 1533 xs = &sx; 1534 1535 while (totwrt > 0) { 1536 nwrt = totwrt; /* XXX */ 1537 #ifndef SD_DUMP_NOT_TRUSTED 1538 /* 1539 * Fill out the scsi command 1540 */ 1541 memset(&cmd, 0, sizeof(cmd)); 1542 cmd.opcode = WRITE_10; 1543 _lto4b(blkno, cmd.addr); 1544 _lto2b(nwrt, cmd.length); 1545 /* 1546 * Fill out the scsipi_xfer structure 1547 * Note: we cannot sleep as we may be an interrupt 1548 * don't use scsipi_command() as it may want to wait 1549 * for an xs. 1550 */ 1551 memset(xs, 0, sizeof(sx)); 1552 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1553 XS_CTL_DATA_OUT; 1554 xs->xs_status = 0; 1555 xs->xs_periph = periph; 1556 xs->xs_retries = SDRETRIES; 1557 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1558 xs->cmd = (struct scsipi_generic *)&cmd; 1559 xs->cmdlen = sizeof(cmd); 1560 xs->resid = nwrt * sectorsize; 1561 xs->error = XS_NOERROR; 1562 xs->bp = 0; 1563 xs->data = va; 1564 xs->datalen = nwrt * sectorsize; 1565 1566 /* 1567 * Pass all this info to the scsi driver. 1568 */ 1569 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1570 if ((xs->xs_status & XS_STS_DONE) == 0 || 1571 xs->error != XS_NOERROR) 1572 return (EIO); 1573 #else /* SD_DUMP_NOT_TRUSTED */ 1574 /* Let's just talk about this first... */ 1575 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1576 delay(500 * 1000); /* half a second */ 1577 #endif /* SD_DUMP_NOT_TRUSTED */ 1578 1579 /* update block count */ 1580 totwrt -= nwrt; 1581 blkno += nwrt; 1582 va += sectorsize * nwrt; 1583 } 1584 sddoingadump = 0; 1585 return (0); 1586 } 1587 1588 static int 1589 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1590 int page, int flags, int *big) 1591 { 1592 1593 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1594 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1595 *big = 1; 1596 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1597 size + sizeof(struct scsi_mode_parameter_header_10), 1598 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1599 } else { 1600 *big = 0; 1601 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1602 size + sizeof(struct scsi_mode_parameter_header_6), 1603 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1604 } 1605 } 1606 1607 static int 1608 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1609 int flags, int big) 1610 { 1611 1612 if (big) { 1613 struct scsi_mode_parameter_header_10 *header = sense; 1614 1615 _lto2b(0, header->data_length); 1616 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1617 size + sizeof(struct scsi_mode_parameter_header_10), 1618 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1619 } else { 1620 struct scsi_mode_parameter_header_6 *header = sense; 1621 1622 header->data_length = 0; 1623 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1624 size + sizeof(struct scsi_mode_parameter_header_6), 1625 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1626 } 1627 } 1628 1629 static int 1630 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1631 { 1632 struct { 1633 struct scsi_mode_parameter_header_6 header; 1634 /* no block descriptor */ 1635 u_int8_t pg_code; /* page code (should be 6) */ 1636 u_int8_t pg_length; /* page length (should be 11) */ 1637 u_int8_t wcd; /* bit0: cache disable */ 1638 u_int8_t lbs[2]; /* logical block size */ 1639 u_int8_t size[5]; /* number of log. blocks */ 1640 u_int8_t pp; /* power/performance */ 1641 u_int8_t flags; 1642 u_int8_t resvd; 1643 } scsipi_sense; 1644 u_int64_t sectors; 1645 int error; 1646 1647 /* 1648 * scsipi_size (ie "read capacity") and mode sense page 6 1649 * give the same information. Do both for now, and check 1650 * for consistency. 1651 * XXX probably differs for removable media 1652 */ 1653 dp->blksize = 512; 1654 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1655 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1656 1657 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1658 &scsipi_sense.header, sizeof(scsipi_sense), 1659 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1660 1661 if (error != 0) 1662 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1663 1664 dp->blksize = _2btol(scsipi_sense.lbs); 1665 if (dp->blksize == 0) 1666 dp->blksize = 512; 1667 1668 /* 1669 * Create a pseudo-geometry. 1670 */ 1671 dp->heads = 64; 1672 dp->sectors = 32; 1673 dp->cyls = sectors / (dp->heads * dp->sectors); 1674 dp->disksize = _5btol(scsipi_sense.size); 1675 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1676 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1677 (unsigned long long)dp->disksize, 1678 (unsigned long long)sectors); 1679 dp->disksize = sectors; 1680 } 1681 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1682 1683 return (SDGP_RESULT_OK); 1684 } 1685 1686 /* 1687 * Get the scsi driver to send a full inquiry to the * device and use the 1688 * results to fill out the disk parameter structure. 1689 */ 1690 static int 1691 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1692 { 1693 u_int64_t sectors; 1694 int error; 1695 #if 0 1696 int i; 1697 u_int8_t *p; 1698 #endif 1699 1700 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1701 if (sectors == 0) { 1702 struct scsipi_read_format_capacities cmd; 1703 struct { 1704 struct scsipi_capacity_list_header header; 1705 struct scsipi_capacity_descriptor desc; 1706 } __attribute__((packed)) data; 1707 1708 memset(&cmd, 0, sizeof(cmd)); 1709 memset(&data, 0, sizeof(data)); 1710 cmd.opcode = READ_FORMAT_CAPACITIES; 1711 _lto2b(sizeof(data), cmd.length); 1712 1713 error = scsipi_command(sd->sc_periph, 1714 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1715 SDRETRIES, 20000, NULL, 1716 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1717 if (error == EFTYPE) { 1718 /* Medium Format Corrupted, handle as not formatted */ 1719 return (SDGP_RESULT_UNFORMATTED); 1720 } 1721 if (error || data.header.length == 0) 1722 return (SDGP_RESULT_OFFLINE); 1723 1724 #if 0 1725 printf("rfc: length=%d\n", data.header.length); 1726 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"); 1727 #endif 1728 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1729 case SCSIPI_CAP_DESC_CODE_RESERVED: 1730 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1731 break; 1732 1733 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1734 return (SDGP_RESULT_UNFORMATTED); 1735 1736 case SCSIPI_CAP_DESC_CODE_NONE: 1737 return (SDGP_RESULT_OFFLINE); 1738 } 1739 1740 dp->disksize = sectors = _4btol(data.desc.nblks); 1741 if (sectors == 0) 1742 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1743 1744 dp->blksize = _3btol(data.desc.blklen); 1745 if (dp->blksize == 0) 1746 dp->blksize = 512; 1747 } else { 1748 struct sd_mode_sense_data scsipi_sense; 1749 int big, bsize; 1750 struct scsi_general_block_descriptor *bdesc; 1751 1752 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1753 error = sd_mode_sense(sd, 0, &scsipi_sense, 1754 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1755 dp->blksize = 512; 1756 if (!error) { 1757 if (big) { 1758 bdesc = (void *)(&scsipi_sense.header.big + 1); 1759 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1760 } else { 1761 bdesc = (void *)(&scsipi_sense.header.small + 1); 1762 bsize = scsipi_sense.header.small.blk_desc_len; 1763 } 1764 1765 #if 0 1766 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1767 printf("page 0 bsize=%d\n", bsize); 1768 printf("page 0 ok\n"); 1769 #endif 1770 1771 if (bsize >= 8) { 1772 dp->blksize = _3btol(bdesc->blklen); 1773 if (dp->blksize == 0) 1774 dp->blksize = 512; 1775 } 1776 } 1777 } 1778 1779 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1780 return (0); 1781 } 1782 1783 static int 1784 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1785 { 1786 struct sd_mode_sense_data scsipi_sense; 1787 int error; 1788 int big, poffset, byte2; 1789 union scsi_disk_pages *pages; 1790 #if 0 1791 int i; 1792 u_int8_t *p; 1793 #endif 1794 1795 byte2 = SMS_DBD; 1796 again: 1797 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1798 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1799 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1800 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1801 flags | XS_CTL_SILENT, &big); 1802 if (error) { 1803 if (byte2 == SMS_DBD) { 1804 /* No result; try once more with DBD off */ 1805 byte2 = 0; 1806 goto again; 1807 } 1808 return (error); 1809 } 1810 1811 if (big) { 1812 poffset = sizeof scsipi_sense.header.big; 1813 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1814 } else { 1815 poffset = sizeof scsipi_sense.header.small; 1816 poffset += scsipi_sense.header.small.blk_desc_len; 1817 } 1818 1819 pages = (void *)((u_long)&scsipi_sense + poffset); 1820 #if 0 1821 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1822 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1823 #endif 1824 1825 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1826 return (ERESTART); 1827 1828 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1829 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1830 _3btol(pages->rigid_geometry.ncyl), 1831 pages->rigid_geometry.nheads, 1832 _2btol(pages->rigid_geometry.st_cyl_wp), 1833 _2btol(pages->rigid_geometry.st_cyl_rwc), 1834 _2btol(pages->rigid_geometry.land_zone))); 1835 1836 /* 1837 * KLUDGE!! (for zone recorded disks) 1838 * give a number of sectors so that sec * trks * cyls 1839 * is <= disk_size 1840 * can lead to wasted space! THINK ABOUT THIS ! 1841 */ 1842 dp->heads = pages->rigid_geometry.nheads; 1843 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1844 if (dp->heads == 0 || dp->cyls == 0) 1845 return (ERESTART); 1846 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1847 1848 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1849 if (dp->rot_rate == 0) 1850 dp->rot_rate = 3600; 1851 1852 #if 0 1853 printf("page 4 ok\n"); 1854 #endif 1855 return (0); 1856 } 1857 1858 static int 1859 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1860 { 1861 struct sd_mode_sense_data scsipi_sense; 1862 int error; 1863 int big, poffset, byte2; 1864 union scsi_disk_pages *pages; 1865 #if 0 1866 int i; 1867 u_int8_t *p; 1868 #endif 1869 1870 byte2 = SMS_DBD; 1871 again: 1872 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1873 error = sd_mode_sense(sd, 0, &scsipi_sense, 1874 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1875 sizeof(scsipi_sense.pages.flex_geometry), 5, 1876 flags | XS_CTL_SILENT, &big); 1877 if (error) { 1878 if (byte2 == SMS_DBD) { 1879 /* No result; try once more with DBD off */ 1880 byte2 = 0; 1881 goto again; 1882 } 1883 return (error); 1884 } 1885 1886 if (big) { 1887 poffset = sizeof scsipi_sense.header.big; 1888 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1889 } else { 1890 poffset = sizeof scsipi_sense.header.small; 1891 poffset += scsipi_sense.header.small.blk_desc_len; 1892 } 1893 1894 pages = (void *)((u_long)&scsipi_sense + poffset); 1895 #if 0 1896 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1897 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1898 #endif 1899 1900 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1901 return (ERESTART); 1902 1903 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1904 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1905 _3btol(pages->flex_geometry.ncyl), 1906 pages->flex_geometry.nheads, 1907 pages->flex_geometry.ph_sec_tr, 1908 _2btol(pages->flex_geometry.bytes_s))); 1909 1910 dp->heads = pages->flex_geometry.nheads; 1911 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1912 dp->sectors = pages->flex_geometry.ph_sec_tr; 1913 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1914 return (ERESTART); 1915 1916 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1917 if (dp->rot_rate == 0) 1918 dp->rot_rate = 3600; 1919 1920 #if 0 1921 printf("page 5 ok\n"); 1922 #endif 1923 return (0); 1924 } 1925 1926 static int 1927 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1928 { 1929 int error; 1930 1931 /* 1932 * If offline, the SDEV_MEDIA_LOADED flag will be 1933 * cleared by the caller if necessary. 1934 */ 1935 if (sd->type == T_SIMPLE_DIRECT) 1936 return (sd_get_simplifiedparms(sd, dp, flags)); 1937 1938 error = sd_get_capacity(sd, dp, flags); 1939 if (error) 1940 return (error); 1941 1942 if (sd->type == T_OPTICAL) 1943 goto page0; 1944 1945 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1946 if (!sd_get_parms_page5(sd, dp, flags) || 1947 !sd_get_parms_page4(sd, dp, flags)) 1948 return (SDGP_RESULT_OK); 1949 } else { 1950 if (!sd_get_parms_page4(sd, dp, flags) || 1951 !sd_get_parms_page5(sd, dp, flags)) 1952 return (SDGP_RESULT_OK); 1953 } 1954 1955 page0: 1956 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1957 /* Try calling driver's method for figuring out geometry. */ 1958 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1959 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1960 (sd->sc_periph, dp, dp->disksize)) { 1961 /* 1962 * Use adaptec standard fictitious geometry 1963 * this depends on which controller (e.g. 1542C is 1964 * different. but we have to put SOMETHING here..) 1965 */ 1966 dp->heads = 64; 1967 dp->sectors = 32; 1968 dp->cyls = dp->disksize / (64 * 32); 1969 } 1970 dp->rot_rate = 3600; 1971 return (SDGP_RESULT_OK); 1972 } 1973 1974 static int 1975 sd_flush(struct sd_softc *sd, int flags) 1976 { 1977 struct scsipi_periph *periph = sd->sc_periph; 1978 struct scsi_synchronize_cache_10 cmd; 1979 1980 /* 1981 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1982 * We issue with address 0 length 0, which should be 1983 * interpreted by the device as "all remaining blocks 1984 * starting at address 0". We ignore ILLEGAL REQUEST 1985 * in the event that the command is not supported by 1986 * the device, and poll for completion so that we know 1987 * that the cache has actually been flushed. 1988 * 1989 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1990 * command, as indicated by our quirks flags. 1991 * 1992 * XXX What about older devices? 1993 */ 1994 if (periph->periph_version < 2 || 1995 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1996 return (0); 1997 1998 sd->flags |= SDF_FLUSHING; 1999 memset(&cmd, 0, sizeof(cmd)); 2000 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2001 2002 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2003 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2004 } 2005 2006 static int 2007 sd_getcache(struct sd_softc *sd, int *bitsp) 2008 { 2009 struct scsipi_periph *periph = sd->sc_periph; 2010 struct sd_mode_sense_data scsipi_sense; 2011 int error, bits = 0; 2012 int big; 2013 union scsi_disk_pages *pages; 2014 2015 if (periph->periph_version < 2) 2016 return (EOPNOTSUPP); 2017 2018 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2019 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2020 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2021 if (error) 2022 return (error); 2023 2024 if (big) 2025 pages = (void *)(&scsipi_sense.header.big + 1); 2026 else 2027 pages = (void *)(&scsipi_sense.header.small + 1); 2028 2029 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2030 bits |= DKCACHE_READ; 2031 if (pages->caching_params.flags & CACHING_WCE) 2032 bits |= DKCACHE_WRITE; 2033 if (pages->caching_params.pg_code & PGCODE_PS) 2034 bits |= DKCACHE_SAVE; 2035 2036 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2037 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2038 sizeof(scsipi_sense.pages.caching_params), 2039 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2040 if (error == 0) { 2041 if (big) 2042 pages = (void *)(&scsipi_sense.header.big + 1); 2043 else 2044 pages = (void *)(&scsipi_sense.header.small + 1); 2045 2046 if (pages->caching_params.flags & CACHING_RCD) 2047 bits |= DKCACHE_RCHANGE; 2048 if (pages->caching_params.flags & CACHING_WCE) 2049 bits |= DKCACHE_WCHANGE; 2050 } 2051 2052 *bitsp = bits; 2053 2054 return (0); 2055 } 2056 2057 static int 2058 sd_setcache(struct sd_softc *sd, int bits) 2059 { 2060 struct scsipi_periph *periph = sd->sc_periph; 2061 struct sd_mode_sense_data scsipi_sense; 2062 int error; 2063 uint8_t oflags, byte2 = 0; 2064 int big; 2065 union scsi_disk_pages *pages; 2066 2067 if (periph->periph_version < 2) 2068 return (EOPNOTSUPP); 2069 2070 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2071 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2072 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2073 if (error) 2074 return (error); 2075 2076 if (big) 2077 pages = (void *)(&scsipi_sense.header.big + 1); 2078 else 2079 pages = (void *)(&scsipi_sense.header.small + 1); 2080 2081 oflags = pages->caching_params.flags; 2082 2083 if (bits & DKCACHE_READ) 2084 pages->caching_params.flags &= ~CACHING_RCD; 2085 else 2086 pages->caching_params.flags |= CACHING_RCD; 2087 2088 if (bits & DKCACHE_WRITE) 2089 pages->caching_params.flags |= CACHING_WCE; 2090 else 2091 pages->caching_params.flags &= ~CACHING_WCE; 2092 2093 if (oflags == pages->caching_params.flags) 2094 return (0); 2095 2096 pages->caching_params.pg_code &= PGCODE_MASK; 2097 2098 if (bits & DKCACHE_SAVE) 2099 byte2 |= SMS_SP; 2100 2101 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2102 sizeof(struct scsi_mode_page_header) + 2103 pages->caching_params.pg_length, 0, big)); 2104 } 2105
Indexes created Tue Sep 23 07:09:52 GMT 2025