sd.c revision 1.250
1 /* $NetBSD: sd.c,v 1.250 2006/09/14 17:54:34 reinoud 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 1.250 2006/09/14 17:54:34 reinoud 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 XS_CTL_SILENT); 503 if (error) 504 goto bad3; 505 } 506 507 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 508 int param_error; 509 periph->periph_flags |= PERIPH_MEDIA_LOADED; 510 511 /* 512 * Load the physical device parameters. 513 * 514 * Note that if media is present but unformatted, 515 * we allow the open (so that it can be formatted!). 516 * The drive should refuse real I/O, if the media is 517 * unformatted. 518 */ 519 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 520 == SDGP_RESULT_OFFLINE) { 521 error = ENXIO; 522 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 523 goto bad3; 524 } 525 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 526 527 /* Load the partition info if not already loaded. */ 528 if (param_error == 0) { 529 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 530 error = EIO; 531 goto bad3; 532 } 533 SC_DEBUG(periph, SCSIPI_DB3, 534 ("Disklabel loaded ")); 535 } 536 } 537 } 538 539 /* Check that the partition exists. */ 540 if (part != RAW_PART && 541 (part >= sd->sc_dk.dk_label->d_npartitions || 542 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 543 error = ENXIO; 544 goto bad3; 545 } 546 547 out: /* Insure only one open at a time. */ 548 switch (fmt) { 549 case S_IFCHR: 550 sd->sc_dk.dk_copenmask |= (1 << part); 551 break; 552 case S_IFBLK: 553 sd->sc_dk.dk_bopenmask |= (1 << part); 554 break; 555 } 556 sd->sc_dk.dk_openmask = 557 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 558 559 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 560 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 561 return (0); 562 563 bad3: 564 if (sd->sc_dk.dk_openmask == 0) { 565 if (periph->periph_flags & PERIPH_REMOVABLE) 566 scsipi_prevent(periph, SPAMR_ALLOW, 567 XS_CTL_IGNORE_ILLEGAL_REQUEST | 568 XS_CTL_IGNORE_MEDIA_CHANGE | 569 XS_CTL_SILENT); 570 periph->periph_flags &= ~PERIPH_OPEN; 571 } 572 573 bad2: 574 if (sd->sc_dk.dk_openmask == 0) 575 scsipi_adapter_delref(adapt); 576 577 bad1: 578 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 579 return (error); 580 } 581 582 /* 583 * close the device.. only called if we are the LAST occurence of an open 584 * device. Convenient now but usually a pain. 585 */ 586 static int 587 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 588 { 589 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 590 struct scsipi_periph *periph = sd->sc_periph; 591 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 592 int part = SDPART(dev); 593 int error; 594 595 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 596 return (error); 597 598 switch (fmt) { 599 case S_IFCHR: 600 sd->sc_dk.dk_copenmask &= ~(1 << part); 601 break; 602 case S_IFBLK: 603 sd->sc_dk.dk_bopenmask &= ~(1 << part); 604 break; 605 } 606 sd->sc_dk.dk_openmask = 607 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 608 609 if (sd->sc_dk.dk_openmask == 0) { 610 /* 611 * If the disk cache needs flushing, and the disk supports 612 * it, do it now. 613 */ 614 if ((sd->flags & SDF_DIRTY) != 0) { 615 if (sd_flush(sd, 0)) { 616 printf("%s: cache synchronization failed\n", 617 sd->sc_dev.dv_xname); 618 sd->flags &= ~SDF_FLUSHING; 619 } else 620 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 621 } 622 623 scsipi_wait_drain(periph); 624 625 if (periph->periph_flags & PERIPH_REMOVABLE) 626 scsipi_prevent(periph, SPAMR_ALLOW, 627 XS_CTL_IGNORE_ILLEGAL_REQUEST | 628 XS_CTL_IGNORE_NOT_READY | 629 XS_CTL_SILENT); 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 /* on a read/write error bp->b_resid is zero, so fix */ 940 bp->b_resid =bp->b_bcount; 941 bp->b_flags |= B_ERROR; 942 } 943 944 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 945 (bp->b_flags & B_READ)); 946 #if NRND > 0 947 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 948 #endif 949 950 biodone(bp); 951 } 952 } 953 954 static void 955 sdminphys(struct buf *bp) 956 { 957 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 958 long xmax; 959 960 /* 961 * If the device is ancient, we want to make sure that 962 * the transfer fits into a 6-byte cdb. 963 * 964 * XXX Note that the SCSI-I spec says that 256-block transfers 965 * are allowed in a 6-byte read/write, and are specified 966 * by settng the "length" to 0. However, we're conservative 967 * here, allowing only 255-block transfers in case an 968 * ancient device gets confused by length == 0. A length of 0 969 * in a 10-byte read/write actually means 0 blocks. 970 */ 971 if ((sd->flags & SDF_ANCIENT) && 972 ((sd->sc_periph->periph_flags & 973 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 974 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 975 976 if (bp->b_bcount > xmax) 977 bp->b_bcount = xmax; 978 } 979 980 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 981 } 982 983 static int 984 sdread(dev_t dev, struct uio *uio, int ioflag) 985 { 986 987 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 988 } 989 990 static int 991 sdwrite(dev_t dev, struct uio *uio, int ioflag) 992 { 993 994 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 995 } 996 997 /* 998 * Perform special action on behalf of the user 999 * Knows about the internals of this device 1000 */ 1001 static int 1002 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l) 1003 { 1004 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1005 struct scsipi_periph *periph = sd->sc_periph; 1006 int part = SDPART(dev); 1007 int error = 0; 1008 #ifdef __HAVE_OLD_DISKLABEL 1009 struct disklabel *newlabel = NULL; 1010 #endif 1011 1012 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1013 1014 /* 1015 * If the device is not valid, some IOCTLs can still be 1016 * handled on the raw partition. Check this here. 1017 */ 1018 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1019 switch (cmd) { 1020 case DIOCKLABEL: 1021 case DIOCWLABEL: 1022 case DIOCLOCK: 1023 case DIOCEJECT: 1024 case ODIOCEJECT: 1025 case DIOCGCACHE: 1026 case DIOCSCACHE: 1027 case SCIOCIDENTIFY: 1028 case OSCIOCIDENTIFY: 1029 case SCIOCCOMMAND: 1030 case SCIOCDEBUG: 1031 if (part == RAW_PART) 1032 break; 1033 /* FALLTHROUGH */ 1034 default: 1035 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1036 return (ENODEV); 1037 else 1038 return (EIO); 1039 } 1040 } 1041 1042 switch (cmd) { 1043 case DIOCGDINFO: 1044 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1045 return (0); 1046 1047 #ifdef __HAVE_OLD_DISKLABEL 1048 case ODIOCGDINFO: 1049 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1050 if (newlabel == NULL) 1051 return EIO; 1052 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1053 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1054 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1055 else 1056 error = ENOTTY; 1057 free(newlabel, M_TEMP); 1058 return error; 1059 #endif 1060 1061 case DIOCGPART: 1062 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1063 ((struct partinfo *)addr)->part = 1064 &sd->sc_dk.dk_label->d_partitions[part]; 1065 return (0); 1066 1067 case DIOCWDINFO: 1068 case DIOCSDINFO: 1069 #ifdef __HAVE_OLD_DISKLABEL 1070 case ODIOCWDINFO: 1071 case ODIOCSDINFO: 1072 #endif 1073 { 1074 struct disklabel *lp; 1075 1076 if ((flag & FWRITE) == 0) 1077 return (EBADF); 1078 1079 #ifdef __HAVE_OLD_DISKLABEL 1080 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1081 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1082 if (newlabel == NULL) 1083 return EIO; 1084 memset(newlabel, 0, sizeof newlabel); 1085 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1086 lp = newlabel; 1087 } else 1088 #endif 1089 lp = (struct disklabel *)addr; 1090 1091 if ((error = lockmgr(&sd->sc_dk.dk_openlock, 1092 LK_EXCLUSIVE, NULL)) != 0) 1093 goto bad; 1094 sd->flags |= SDF_LABELLING; 1095 1096 error = setdisklabel(sd->sc_dk.dk_label, 1097 lp, /*sd->sc_dk.dk_openmask : */0, 1098 sd->sc_dk.dk_cpulabel); 1099 if (error == 0) { 1100 if (cmd == DIOCWDINFO 1101 #ifdef __HAVE_OLD_DISKLABEL 1102 || cmd == ODIOCWDINFO 1103 #endif 1104 ) 1105 error = writedisklabel(SDLABELDEV(dev), 1106 sdstrategy, sd->sc_dk.dk_label, 1107 sd->sc_dk.dk_cpulabel); 1108 } 1109 1110 sd->flags &= ~SDF_LABELLING; 1111 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1112 bad: 1113 #ifdef __HAVE_OLD_DISKLABEL 1114 if (newlabel != NULL) 1115 free(newlabel, M_TEMP); 1116 #endif 1117 return (error); 1118 } 1119 1120 case DIOCKLABEL: 1121 if (*(int *)addr) 1122 periph->periph_flags |= PERIPH_KEEP_LABEL; 1123 else 1124 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1125 return (0); 1126 1127 case DIOCWLABEL: 1128 if ((flag & FWRITE) == 0) 1129 return (EBADF); 1130 if (*(int *)addr) 1131 sd->flags |= SDF_WLABEL; 1132 else 1133 sd->flags &= ~SDF_WLABEL; 1134 return (0); 1135 1136 case DIOCLOCK: 1137 if (periph->periph_flags & PERIPH_REMOVABLE) 1138 return (scsipi_prevent(periph, 1139 (*(int *)addr) ? 1140 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1141 else 1142 return (ENOTTY); 1143 1144 case DIOCEJECT: 1145 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1146 return (ENOTTY); 1147 if (*(int *)addr == 0) { 1148 /* 1149 * Don't force eject: check that we are the only 1150 * partition open. If so, unlock it. 1151 */ 1152 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1153 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1154 sd->sc_dk.dk_openmask) { 1155 error = scsipi_prevent(periph, SPAMR_ALLOW, 1156 XS_CTL_IGNORE_NOT_READY); 1157 if (error) 1158 return (error); 1159 } else { 1160 return (EBUSY); 1161 } 1162 } 1163 /* FALLTHROUGH */ 1164 case ODIOCEJECT: 1165 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1166 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1167 1168 case DIOCGDEFLABEL: 1169 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1170 return (0); 1171 1172 #ifdef __HAVE_OLD_DISKLABEL 1173 case ODIOCGDEFLABEL: 1174 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1175 if (newlabel == NULL) 1176 return EIO; 1177 sdgetdefaultlabel(sd, newlabel); 1178 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1179 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1180 else 1181 error = ENOTTY; 1182 free(newlabel, M_TEMP); 1183 return error; 1184 #endif 1185 1186 case DIOCGCACHE: 1187 return (sd_getcache(sd, (int *) addr)); 1188 1189 case DIOCSCACHE: 1190 if ((flag & FWRITE) == 0) 1191 return (EBADF); 1192 return (sd_setcache(sd, *(int *) addr)); 1193 1194 case DIOCCACHESYNC: 1195 /* 1196 * XXX Do we really need to care about having a writable 1197 * file descriptor here? 1198 */ 1199 if ((flag & FWRITE) == 0) 1200 return (EBADF); 1201 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1202 error = sd_flush(sd, 0); 1203 if (error) 1204 sd->flags &= ~SDF_FLUSHING; 1205 else 1206 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1207 } else 1208 error = 0; 1209 return (error); 1210 1211 case DIOCAWEDGE: 1212 { 1213 struct dkwedge_info *dkw = (void *) addr; 1214 1215 if ((flag & FWRITE) == 0) 1216 return (EBADF); 1217 1218 /* If the ioctl happens here, the parent is us. */ 1219 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1220 return (dkwedge_add(dkw)); 1221 } 1222 1223 case DIOCDWEDGE: 1224 { 1225 struct dkwedge_info *dkw = (void *) addr; 1226 1227 if ((flag & FWRITE) == 0) 1228 return (EBADF); 1229 1230 /* If the ioctl happens here, the parent is us. */ 1231 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1232 return (dkwedge_del(dkw)); 1233 } 1234 1235 case DIOCLWEDGES: 1236 { 1237 struct dkwedge_list *dkwl = (void *) addr; 1238 1239 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1240 } 1241 1242 default: 1243 if (part != RAW_PART) 1244 return (ENOTTY); 1245 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1246 } 1247 1248 #ifdef DIAGNOSTIC 1249 panic("sdioctl: impossible"); 1250 #endif 1251 } 1252 1253 static void 1254 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1255 { 1256 1257 memset(lp, 0, sizeof(struct disklabel)); 1258 1259 lp->d_secsize = sd->params.blksize; 1260 lp->d_ntracks = sd->params.heads; 1261 lp->d_nsectors = sd->params.sectors; 1262 lp->d_ncylinders = sd->params.cyls; 1263 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1264 1265 switch (scsipi_periph_bustype(sd->sc_periph)) { 1266 case SCSIPI_BUSTYPE_SCSI: 1267 lp->d_type = DTYPE_SCSI; 1268 break; 1269 case SCSIPI_BUSTYPE_ATAPI: 1270 lp->d_type = DTYPE_ATAPI; 1271 break; 1272 } 1273 /* 1274 * XXX 1275 * We could probe the mode pages to figure out what kind of disc it is. 1276 * Is this worthwhile? 1277 */ 1278 strncpy(lp->d_typename, "mydisk", 16); 1279 strncpy(lp->d_packname, "fictitious", 16); 1280 lp->d_secperunit = sd->params.disksize; 1281 lp->d_rpm = sd->params.rot_rate; 1282 lp->d_interleave = 1; 1283 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1284 D_REMOVABLE : 0; 1285 1286 lp->d_partitions[RAW_PART].p_offset = 0; 1287 lp->d_partitions[RAW_PART].p_size = 1288 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1289 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1290 lp->d_npartitions = RAW_PART + 1; 1291 1292 lp->d_magic = DISKMAGIC; 1293 lp->d_magic2 = DISKMAGIC; 1294 lp->d_checksum = dkcksum(lp); 1295 } 1296 1297 1298 /* 1299 * Load the label information on the named device 1300 */ 1301 static int 1302 sdgetdisklabel(struct sd_softc *sd) 1303 { 1304 struct disklabel *lp = sd->sc_dk.dk_label; 1305 const char *errstring; 1306 1307 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1308 1309 sdgetdefaultlabel(sd, lp); 1310 1311 if (lp->d_secpercyl == 0) { 1312 lp->d_secpercyl = 100; 1313 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1314 } 1315 1316 /* 1317 * Call the generic disklabel extraction routine 1318 */ 1319 errstring = readdisklabel(MAKESDDEV(0, device_unit(&sd->sc_dev), 1320 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1321 if (errstring) { 1322 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1323 return EIO; 1324 } 1325 return 0; 1326 } 1327 1328 static void 1329 sd_shutdown(void *arg) 1330 { 1331 struct sd_softc *sd = arg; 1332 1333 /* 1334 * If the disk cache needs to be flushed, and the disk supports 1335 * it, flush it. We're cold at this point, so we poll for 1336 * completion. 1337 */ 1338 if ((sd->flags & SDF_DIRTY) != 0) { 1339 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1340 printf("%s: cache synchronization failed\n", 1341 sd->sc_dev.dv_xname); 1342 sd->flags &= ~SDF_FLUSHING; 1343 } else 1344 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1345 } 1346 } 1347 1348 /* 1349 * Check Errors 1350 */ 1351 static int 1352 sd_interpret_sense(struct scsipi_xfer *xs) 1353 { 1354 struct scsipi_periph *periph = xs->xs_periph; 1355 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1356 struct sd_softc *sd = (void *)periph->periph_dev; 1357 int s, error, retval = EJUSTRETURN; 1358 1359 /* 1360 * If the periph is already recovering, just do the normal 1361 * error processing. 1362 */ 1363 if (periph->periph_flags & PERIPH_RECOVERING) 1364 return (retval); 1365 1366 /* 1367 * Ignore errors from accessing illegal fields (e.g. trying to 1368 * lock the door of a digicam, which doesn't have a door that 1369 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1370 */ 1371 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1372 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1373 sense->asc == 0x24 && 1374 sense->ascq == 0x00) { /* Illegal field in CDB */ 1375 if (!(xs->xs_control & XS_CTL_SILENT)) { 1376 scsipi_printaddr(periph); 1377 printf("no door lock\n"); 1378 } 1379 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1380 return (retval); 1381 } 1382 1383 1384 1385 /* 1386 * If the device is not open yet, let the generic code handle it. 1387 */ 1388 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1389 return (retval); 1390 1391 /* 1392 * If it isn't a extended or extended/deferred error, let 1393 * the generic code handle it. 1394 */ 1395 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1396 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1397 return (retval); 1398 1399 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1400 sense->asc == 0x4) { 1401 if (sense->ascq == 0x01) { 1402 /* 1403 * Unit In The Process Of Becoming Ready. 1404 */ 1405 printf("%s: waiting for pack to spin up...\n", 1406 sd->sc_dev.dv_xname); 1407 if (!callout_pending(&periph->periph_callout)) 1408 scsipi_periph_freeze(periph, 1); 1409 callout_reset(&periph->periph_callout, 1410 5 * hz, scsipi_periph_timed_thaw, periph); 1411 retval = ERESTART; 1412 } else if (sense->ascq == 0x02) { 1413 printf("%s: pack is stopped, restarting...\n", 1414 sd->sc_dev.dv_xname); 1415 s = splbio(); 1416 periph->periph_flags |= PERIPH_RECOVERING; 1417 splx(s); 1418 error = scsipi_start(periph, SSS_START, 1419 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1420 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1421 if (error) { 1422 printf("%s: unable to restart pack\n", 1423 sd->sc_dev.dv_xname); 1424 retval = error; 1425 } else 1426 retval = ERESTART; 1427 s = splbio(); 1428 periph->periph_flags &= ~PERIPH_RECOVERING; 1429 splx(s); 1430 } 1431 } 1432 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1433 sense->asc == 0x31 && 1434 sense->ascq == 0x00) { /* maybe for any asq ? */ 1435 /* Medium Format Corrupted */ 1436 retval = EFTYPE; 1437 } 1438 return (retval); 1439 } 1440 1441 1442 static int 1443 sdsize(dev_t dev) 1444 { 1445 struct sd_softc *sd; 1446 int part, unit, omask; 1447 int size; 1448 1449 unit = SDUNIT(dev); 1450 if (unit >= sd_cd.cd_ndevs) 1451 return (-1); 1452 sd = sd_cd.cd_devs[unit]; 1453 if (sd == NULL) 1454 return (-1); 1455 1456 if (!device_is_active(&sd->sc_dev)) 1457 return (-1); 1458 1459 part = SDPART(dev); 1460 omask = sd->sc_dk.dk_openmask & (1 << part); 1461 1462 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1463 return (-1); 1464 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1465 size = -1; 1466 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1467 size = -1; 1468 else 1469 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1470 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1471 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1472 return (-1); 1473 return (size); 1474 } 1475 1476 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1477 static struct scsipi_xfer sx; 1478 static int sddoingadump; 1479 1480 /* 1481 * dump all of physical memory into the partition specified, starting 1482 * at offset 'dumplo' into the partition. 1483 */ 1484 static int 1485 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1486 { 1487 struct sd_softc *sd; /* disk unit to do the I/O */ 1488 struct disklabel *lp; /* disk's disklabel */ 1489 int unit, part; 1490 int sectorsize; /* size of a disk sector */ 1491 int nsects; /* number of sectors in partition */ 1492 int sectoff; /* sector offset of partition */ 1493 int totwrt; /* total number of sectors left to write */ 1494 int nwrt; /* current number of sectors to write */ 1495 struct scsipi_rw_10 cmd; /* write command */ 1496 struct scsipi_xfer *xs; /* ... convenience */ 1497 struct scsipi_periph *periph; 1498 struct scsipi_channel *chan; 1499 1500 /* Check if recursive dump; if so, punt. */ 1501 if (sddoingadump) 1502 return (EFAULT); 1503 1504 /* Mark as active early. */ 1505 sddoingadump = 1; 1506 1507 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1508 part = SDPART(dev); 1509 1510 /* Check for acceptable drive number. */ 1511 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1512 return (ENXIO); 1513 1514 if (!device_is_active(&sd->sc_dev)) 1515 return (ENODEV); 1516 1517 periph = sd->sc_periph; 1518 chan = periph->periph_channel; 1519 1520 /* Make sure it was initialized. */ 1521 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1522 return (ENXIO); 1523 1524 /* Convert to disk sectors. Request must be a multiple of size. */ 1525 lp = sd->sc_dk.dk_label; 1526 sectorsize = lp->d_secsize; 1527 if ((size % sectorsize) != 0) 1528 return (EFAULT); 1529 totwrt = size / sectorsize; 1530 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1531 1532 nsects = lp->d_partitions[part].p_size; 1533 sectoff = lp->d_partitions[part].p_offset; 1534 1535 /* Check transfer bounds against partition size. */ 1536 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1537 return (EINVAL); 1538 1539 /* Offset block number to start of partition. */ 1540 blkno += sectoff; 1541 1542 xs = &sx; 1543 1544 while (totwrt > 0) { 1545 nwrt = totwrt; /* XXX */ 1546 #ifndef SD_DUMP_NOT_TRUSTED 1547 /* 1548 * Fill out the scsi command 1549 */ 1550 memset(&cmd, 0, sizeof(cmd)); 1551 cmd.opcode = WRITE_10; 1552 _lto4b(blkno, cmd.addr); 1553 _lto2b(nwrt, cmd.length); 1554 /* 1555 * Fill out the scsipi_xfer structure 1556 * Note: we cannot sleep as we may be an interrupt 1557 * don't use scsipi_command() as it may want to wait 1558 * for an xs. 1559 */ 1560 memset(xs, 0, sizeof(sx)); 1561 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1562 XS_CTL_DATA_OUT; 1563 xs->xs_status = 0; 1564 xs->xs_periph = periph; 1565 xs->xs_retries = SDRETRIES; 1566 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1567 xs->cmd = (struct scsipi_generic *)&cmd; 1568 xs->cmdlen = sizeof(cmd); 1569 xs->resid = nwrt * sectorsize; 1570 xs->error = XS_NOERROR; 1571 xs->bp = 0; 1572 xs->data = va; 1573 xs->datalen = nwrt * sectorsize; 1574 1575 /* 1576 * Pass all this info to the scsi driver. 1577 */ 1578 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1579 if ((xs->xs_status & XS_STS_DONE) == 0 || 1580 xs->error != XS_NOERROR) 1581 return (EIO); 1582 #else /* SD_DUMP_NOT_TRUSTED */ 1583 /* Let's just talk about this first... */ 1584 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1585 delay(500 * 1000); /* half a second */ 1586 #endif /* SD_DUMP_NOT_TRUSTED */ 1587 1588 /* update block count */ 1589 totwrt -= nwrt; 1590 blkno += nwrt; 1591 va += sectorsize * nwrt; 1592 } 1593 sddoingadump = 0; 1594 return (0); 1595 } 1596 1597 static int 1598 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1599 int page, int flags, int *big) 1600 { 1601 1602 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1603 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1604 *big = 1; 1605 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1606 size + sizeof(struct scsi_mode_parameter_header_10), 1607 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1608 } else { 1609 *big = 0; 1610 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1611 size + sizeof(struct scsi_mode_parameter_header_6), 1612 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1613 } 1614 } 1615 1616 static int 1617 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1618 int flags, int big) 1619 { 1620 1621 if (big) { 1622 struct scsi_mode_parameter_header_10 *header = sense; 1623 1624 _lto2b(0, header->data_length); 1625 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1626 size + sizeof(struct scsi_mode_parameter_header_10), 1627 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1628 } else { 1629 struct scsi_mode_parameter_header_6 *header = sense; 1630 1631 header->data_length = 0; 1632 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1633 size + sizeof(struct scsi_mode_parameter_header_6), 1634 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1635 } 1636 } 1637 1638 static int 1639 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1640 { 1641 struct { 1642 struct scsi_mode_parameter_header_6 header; 1643 /* no block descriptor */ 1644 u_int8_t pg_code; /* page code (should be 6) */ 1645 u_int8_t pg_length; /* page length (should be 11) */ 1646 u_int8_t wcd; /* bit0: cache disable */ 1647 u_int8_t lbs[2]; /* logical block size */ 1648 u_int8_t size[5]; /* number of log. blocks */ 1649 u_int8_t pp; /* power/performance */ 1650 u_int8_t flags; 1651 u_int8_t resvd; 1652 } scsipi_sense; 1653 u_int64_t sectors; 1654 int error; 1655 1656 /* 1657 * scsipi_size (ie "read capacity") and mode sense page 6 1658 * give the same information. Do both for now, and check 1659 * for consistency. 1660 * XXX probably differs for removable media 1661 */ 1662 dp->blksize = 512; 1663 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1664 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1665 1666 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1667 &scsipi_sense.header, sizeof(scsipi_sense), 1668 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1669 1670 if (error != 0) 1671 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1672 1673 dp->blksize = _2btol(scsipi_sense.lbs); 1674 if (dp->blksize == 0) 1675 dp->blksize = 512; 1676 1677 /* 1678 * Create a pseudo-geometry. 1679 */ 1680 dp->heads = 64; 1681 dp->sectors = 32; 1682 dp->cyls = sectors / (dp->heads * dp->sectors); 1683 dp->disksize = _5btol(scsipi_sense.size); 1684 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1685 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1686 (unsigned long long)dp->disksize, 1687 (unsigned long long)sectors); 1688 dp->disksize = sectors; 1689 } 1690 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1691 1692 return (SDGP_RESULT_OK); 1693 } 1694 1695 /* 1696 * Get the scsi driver to send a full inquiry to the * device and use the 1697 * results to fill out the disk parameter structure. 1698 */ 1699 static int 1700 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1701 { 1702 u_int64_t sectors; 1703 int error; 1704 #if 0 1705 int i; 1706 u_int8_t *p; 1707 #endif 1708 1709 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1710 if (sectors == 0) { 1711 struct scsipi_read_format_capacities cmd; 1712 struct { 1713 struct scsipi_capacity_list_header header; 1714 struct scsipi_capacity_descriptor desc; 1715 } __attribute__((packed)) data; 1716 1717 memset(&cmd, 0, sizeof(cmd)); 1718 memset(&data, 0, sizeof(data)); 1719 cmd.opcode = READ_FORMAT_CAPACITIES; 1720 _lto2b(sizeof(data), cmd.length); 1721 1722 error = scsipi_command(sd->sc_periph, 1723 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1724 SDRETRIES, 20000, NULL, 1725 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1726 if (error == EFTYPE) { 1727 /* Medium Format Corrupted, handle as not formatted */ 1728 return (SDGP_RESULT_UNFORMATTED); 1729 } 1730 if (error || data.header.length == 0) 1731 return (SDGP_RESULT_OFFLINE); 1732 1733 #if 0 1734 printf("rfc: length=%d\n", data.header.length); 1735 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"); 1736 #endif 1737 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1738 case SCSIPI_CAP_DESC_CODE_RESERVED: 1739 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1740 break; 1741 1742 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1743 return (SDGP_RESULT_UNFORMATTED); 1744 1745 case SCSIPI_CAP_DESC_CODE_NONE: 1746 return (SDGP_RESULT_OFFLINE); 1747 } 1748 1749 dp->disksize = sectors = _4btol(data.desc.nblks); 1750 if (sectors == 0) 1751 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1752 1753 dp->blksize = _3btol(data.desc.blklen); 1754 if (dp->blksize == 0) 1755 dp->blksize = 512; 1756 } else { 1757 struct sd_mode_sense_data scsipi_sense; 1758 int big, bsize; 1759 struct scsi_general_block_descriptor *bdesc; 1760 1761 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1762 error = sd_mode_sense(sd, 0, &scsipi_sense, 1763 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1764 dp->blksize = 512; 1765 if (!error) { 1766 if (big) { 1767 bdesc = (void *)(&scsipi_sense.header.big + 1); 1768 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1769 } else { 1770 bdesc = (void *)(&scsipi_sense.header.small + 1); 1771 bsize = scsipi_sense.header.small.blk_desc_len; 1772 } 1773 1774 #if 0 1775 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1776 printf("page 0 bsize=%d\n", bsize); 1777 printf("page 0 ok\n"); 1778 #endif 1779 1780 if (bsize >= 8) { 1781 dp->blksize = _3btol(bdesc->blklen); 1782 if (dp->blksize == 0) 1783 dp->blksize = 512; 1784 } 1785 } 1786 } 1787 1788 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1789 return (0); 1790 } 1791 1792 static int 1793 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1794 { 1795 struct sd_mode_sense_data scsipi_sense; 1796 int error; 1797 int big, poffset, byte2; 1798 union scsi_disk_pages *pages; 1799 #if 0 1800 int i; 1801 u_int8_t *p; 1802 #endif 1803 1804 byte2 = SMS_DBD; 1805 again: 1806 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1807 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1808 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1809 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1810 flags | XS_CTL_SILENT, &big); 1811 if (error) { 1812 if (byte2 == SMS_DBD) { 1813 /* No result; try once more with DBD off */ 1814 byte2 = 0; 1815 goto again; 1816 } 1817 return (error); 1818 } 1819 1820 if (big) { 1821 poffset = sizeof scsipi_sense.header.big; 1822 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1823 } else { 1824 poffset = sizeof scsipi_sense.header.small; 1825 poffset += scsipi_sense.header.small.blk_desc_len; 1826 } 1827 1828 pages = (void *)((u_long)&scsipi_sense + poffset); 1829 #if 0 1830 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1831 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1832 #endif 1833 1834 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1835 return (ERESTART); 1836 1837 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1838 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1839 _3btol(pages->rigid_geometry.ncyl), 1840 pages->rigid_geometry.nheads, 1841 _2btol(pages->rigid_geometry.st_cyl_wp), 1842 _2btol(pages->rigid_geometry.st_cyl_rwc), 1843 _2btol(pages->rigid_geometry.land_zone))); 1844 1845 /* 1846 * KLUDGE!! (for zone recorded disks) 1847 * give a number of sectors so that sec * trks * cyls 1848 * is <= disk_size 1849 * can lead to wasted space! THINK ABOUT THIS ! 1850 */ 1851 dp->heads = pages->rigid_geometry.nheads; 1852 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1853 if (dp->heads == 0 || dp->cyls == 0) 1854 return (ERESTART); 1855 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1856 1857 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1858 if (dp->rot_rate == 0) 1859 dp->rot_rate = 3600; 1860 1861 #if 0 1862 printf("page 4 ok\n"); 1863 #endif 1864 return (0); 1865 } 1866 1867 static int 1868 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1869 { 1870 struct sd_mode_sense_data scsipi_sense; 1871 int error; 1872 int big, poffset, byte2; 1873 union scsi_disk_pages *pages; 1874 #if 0 1875 int i; 1876 u_int8_t *p; 1877 #endif 1878 1879 byte2 = SMS_DBD; 1880 again: 1881 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1882 error = sd_mode_sense(sd, 0, &scsipi_sense, 1883 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1884 sizeof(scsipi_sense.pages.flex_geometry), 5, 1885 flags | XS_CTL_SILENT, &big); 1886 if (error) { 1887 if (byte2 == SMS_DBD) { 1888 /* No result; try once more with DBD off */ 1889 byte2 = 0; 1890 goto again; 1891 } 1892 return (error); 1893 } 1894 1895 if (big) { 1896 poffset = sizeof scsipi_sense.header.big; 1897 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1898 } else { 1899 poffset = sizeof scsipi_sense.header.small; 1900 poffset += scsipi_sense.header.small.blk_desc_len; 1901 } 1902 1903 pages = (void *)((u_long)&scsipi_sense + poffset); 1904 #if 0 1905 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1906 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1907 #endif 1908 1909 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1910 return (ERESTART); 1911 1912 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1913 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1914 _3btol(pages->flex_geometry.ncyl), 1915 pages->flex_geometry.nheads, 1916 pages->flex_geometry.ph_sec_tr, 1917 _2btol(pages->flex_geometry.bytes_s))); 1918 1919 dp->heads = pages->flex_geometry.nheads; 1920 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1921 dp->sectors = pages->flex_geometry.ph_sec_tr; 1922 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1923 return (ERESTART); 1924 1925 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1926 if (dp->rot_rate == 0) 1927 dp->rot_rate = 3600; 1928 1929 #if 0 1930 printf("page 5 ok\n"); 1931 #endif 1932 return (0); 1933 } 1934 1935 static int 1936 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1937 { 1938 int error; 1939 1940 /* 1941 * If offline, the SDEV_MEDIA_LOADED flag will be 1942 * cleared by the caller if necessary. 1943 */ 1944 if (sd->type == T_SIMPLE_DIRECT) 1945 return (sd_get_simplifiedparms(sd, dp, flags)); 1946 1947 error = sd_get_capacity(sd, dp, flags); 1948 if (error) 1949 return (error); 1950 1951 if (sd->type == T_OPTICAL) 1952 goto page0; 1953 1954 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1955 if (!sd_get_parms_page5(sd, dp, flags) || 1956 !sd_get_parms_page4(sd, dp, flags)) 1957 return (SDGP_RESULT_OK); 1958 } else { 1959 if (!sd_get_parms_page4(sd, dp, flags) || 1960 !sd_get_parms_page5(sd, dp, flags)) 1961 return (SDGP_RESULT_OK); 1962 } 1963 1964 page0: 1965 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1966 /* Try calling driver's method for figuring out geometry. */ 1967 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1968 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1969 (sd->sc_periph, dp, dp->disksize)) { 1970 /* 1971 * Use adaptec standard fictitious geometry 1972 * this depends on which controller (e.g. 1542C is 1973 * different. but we have to put SOMETHING here..) 1974 */ 1975 dp->heads = 64; 1976 dp->sectors = 32; 1977 dp->cyls = dp->disksize / (64 * 32); 1978 } 1979 dp->rot_rate = 3600; 1980 return (SDGP_RESULT_OK); 1981 } 1982 1983 static int 1984 sd_flush(struct sd_softc *sd, int flags) 1985 { 1986 struct scsipi_periph *periph = sd->sc_periph; 1987 struct scsi_synchronize_cache_10 cmd; 1988 1989 /* 1990 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1991 * We issue with address 0 length 0, which should be 1992 * interpreted by the device as "all remaining blocks 1993 * starting at address 0". We ignore ILLEGAL REQUEST 1994 * in the event that the command is not supported by 1995 * the device, and poll for completion so that we know 1996 * that the cache has actually been flushed. 1997 * 1998 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1999 * command, as indicated by our quirks flags. 2000 * 2001 * XXX What about older devices? 2002 */ 2003 if (periph->periph_version < 2 || 2004 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2005 return (0); 2006 2007 sd->flags |= SDF_FLUSHING; 2008 memset(&cmd, 0, sizeof(cmd)); 2009 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2010 2011 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2012 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2013 } 2014 2015 static int 2016 sd_getcache(struct sd_softc *sd, int *bitsp) 2017 { 2018 struct scsipi_periph *periph = sd->sc_periph; 2019 struct sd_mode_sense_data scsipi_sense; 2020 int error, bits = 0; 2021 int big; 2022 union scsi_disk_pages *pages; 2023 2024 if (periph->periph_version < 2) 2025 return (EOPNOTSUPP); 2026 2027 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2028 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2029 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2030 if (error) 2031 return (error); 2032 2033 if (big) 2034 pages = (void *)(&scsipi_sense.header.big + 1); 2035 else 2036 pages = (void *)(&scsipi_sense.header.small + 1); 2037 2038 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2039 bits |= DKCACHE_READ; 2040 if (pages->caching_params.flags & CACHING_WCE) 2041 bits |= DKCACHE_WRITE; 2042 if (pages->caching_params.pg_code & PGCODE_PS) 2043 bits |= DKCACHE_SAVE; 2044 2045 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2046 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2047 sizeof(scsipi_sense.pages.caching_params), 2048 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2049 if (error == 0) { 2050 if (big) 2051 pages = (void *)(&scsipi_sense.header.big + 1); 2052 else 2053 pages = (void *)(&scsipi_sense.header.small + 1); 2054 2055 if (pages->caching_params.flags & CACHING_RCD) 2056 bits |= DKCACHE_RCHANGE; 2057 if (pages->caching_params.flags & CACHING_WCE) 2058 bits |= DKCACHE_WCHANGE; 2059 } 2060 2061 *bitsp = bits; 2062 2063 return (0); 2064 } 2065 2066 static int 2067 sd_setcache(struct sd_softc *sd, int bits) 2068 { 2069 struct scsipi_periph *periph = sd->sc_periph; 2070 struct sd_mode_sense_data scsipi_sense; 2071 int error; 2072 uint8_t oflags, byte2 = 0; 2073 int big; 2074 union scsi_disk_pages *pages; 2075 2076 if (periph->periph_version < 2) 2077 return (EOPNOTSUPP); 2078 2079 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2080 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2081 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2082 if (error) 2083 return (error); 2084 2085 if (big) 2086 pages = (void *)(&scsipi_sense.header.big + 1); 2087 else 2088 pages = (void *)(&scsipi_sense.header.small + 1); 2089 2090 oflags = pages->caching_params.flags; 2091 2092 if (bits & DKCACHE_READ) 2093 pages->caching_params.flags &= ~CACHING_RCD; 2094 else 2095 pages->caching_params.flags |= CACHING_RCD; 2096 2097 if (bits & DKCACHE_WRITE) 2098 pages->caching_params.flags |= CACHING_WCE; 2099 else 2100 pages->caching_params.flags &= ~CACHING_WCE; 2101 2102 if (oflags == pages->caching_params.flags) 2103 return (0); 2104 2105 pages->caching_params.pg_code &= PGCODE_MASK; 2106 2107 if (bits & DKCACHE_SAVE) 2108 byte2 |= SMS_SP; 2109 2110 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2111 sizeof(struct scsi_mode_page_header) + 2112 pages->caching_params.pg_length, 0, big)); 2113 } 2114
Indexes created Tue Sep 23 07:09:52 GMT 2025