sd.c revision 1.256
1 /* $NetBSD: sd.c,v 1.256 2006/11/26 05:01:09 itohy 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 1.256 2006/11/26 05:01:09 itohy 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 #define SD_DEFAULT_BLKSIZE 512 101 102 static void sdminphys(struct buf *); 103 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 104 static int sdgetdisklabel(struct sd_softc *); 105 static void sdstart(struct scsipi_periph *); 106 static void sdrestart(void *); 107 static void sddone(struct scsipi_xfer *, int); 108 static void sd_shutdown(void *); 109 static int sd_interpret_sense(struct scsipi_xfer *); 110 111 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 112 int, int *); 113 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 114 int); 115 static int sd_validate_blksize(struct scsipi_periph *, int); 116 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 117 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 118 int); 119 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 120 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 121 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 122 int); 123 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 124 int); 125 126 static int sd_flush(struct sd_softc *, int); 127 static int sd_getcache(struct sd_softc *, int *); 128 static int sd_setcache(struct sd_softc *, int); 129 130 static int sdmatch(struct device *, struct cfdata *, void *); 131 static void sdattach(struct device *, struct device *, void *); 132 static int sdactivate(struct device *, enum devact); 133 static int sddetach(struct device *, int); 134 135 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 136 sdactivate); 137 138 extern struct cfdriver sd_cd; 139 140 static const struct scsipi_inquiry_pattern sd_patterns[] = { 141 {T_DIRECT, T_FIXED, 142 "", "", ""}, 143 {T_DIRECT, T_REMOV, 144 "", "", ""}, 145 {T_OPTICAL, T_FIXED, 146 "", "", ""}, 147 {T_OPTICAL, T_REMOV, 148 "", "", ""}, 149 {T_SIMPLE_DIRECT, T_FIXED, 150 "", "", ""}, 151 {T_SIMPLE_DIRECT, T_REMOV, 152 "", "", ""}, 153 }; 154 155 static dev_type_open(sdopen); 156 static dev_type_close(sdclose); 157 static dev_type_read(sdread); 158 static dev_type_write(sdwrite); 159 static dev_type_ioctl(sdioctl); 160 static dev_type_strategy(sdstrategy); 161 static dev_type_dump(sddump); 162 static dev_type_size(sdsize); 163 164 const struct bdevsw sd_bdevsw = { 165 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 166 }; 167 168 const struct cdevsw sd_cdevsw = { 169 sdopen, sdclose, sdread, sdwrite, sdioctl, 170 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 171 }; 172 173 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 174 175 static const struct scsipi_periphsw sd_switch = { 176 sd_interpret_sense, /* check our error handler first */ 177 sdstart, /* have a queue, served by this */ 178 NULL, /* have no async handler */ 179 sddone, /* deal with stats at interrupt time */ 180 }; 181 182 struct sd_mode_sense_data { 183 /* 184 * XXX 185 * We are not going to parse this as-is -- it just has to be large 186 * enough. 187 */ 188 union { 189 struct scsi_mode_parameter_header_6 small; 190 struct scsi_mode_parameter_header_10 big; 191 } header; 192 struct scsi_general_block_descriptor blk_desc; 193 union scsi_disk_pages pages; 194 }; 195 196 /* 197 * The routine called by the low level scsi routine when it discovers 198 * A device suitable for this driver 199 */ 200 static int 201 sdmatch(struct device *parent, struct cfdata *match, 202 void *aux) 203 { 204 struct scsipibus_attach_args *sa = aux; 205 int priority; 206 207 (void)scsipi_inqmatch(&sa->sa_inqbuf, 208 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 209 sizeof(sd_patterns[0]), &priority); 210 211 return (priority); 212 } 213 214 /* 215 * Attach routine common to atapi & scsi. 216 */ 217 static void 218 sdattach(struct device *parent, struct device *self, void *aux) 219 { 220 struct sd_softc *sd = device_private(self); 221 struct scsipibus_attach_args *sa = aux; 222 struct scsipi_periph *periph = sa->sa_periph; 223 int error, result; 224 struct disk_parms *dp = &sd->params; 225 char pbuf[9]; 226 227 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 228 229 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 230 if (sd->type == T_SIMPLE_DIRECT) 231 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 232 233 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 234 periph->periph_version == 0) 235 sd->flags |= SDF_ANCIENT; 236 237 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 238 239 callout_init(&sd->sc_callout); 240 241 /* 242 * Store information needed to contact our base driver 243 */ 244 sd->sc_periph = periph; 245 246 periph->periph_dev = &sd->sc_dev; 247 periph->periph_switch = &sd_switch; 248 249 /* 250 * Increase our openings to the maximum-per-periph 251 * supported by the adapter. This will either be 252 * clamped down or grown by the adapter if necessary. 253 */ 254 periph->periph_openings = 255 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 256 periph->periph_flags |= PERIPH_GROW_OPENINGS; 257 258 /* 259 * Initialize and attach the disk structure. 260 */ 261 sd->sc_dk.dk_driver = &sddkdriver; 262 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 263 disk_attach(&sd->sc_dk); 264 265 /* 266 * Use the subdriver to request information regarding the drive. 267 */ 268 aprint_naive("\n"); 269 aprint_normal("\n"); 270 271 error = scsipi_test_unit_ready(periph, 272 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 273 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 274 275 if (error) 276 result = SDGP_RESULT_OFFLINE; 277 else 278 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 279 aprint_normal("%s: ", sd->sc_dev.dv_xname); 280 switch (result) { 281 case SDGP_RESULT_OK: 282 format_bytes(pbuf, sizeof(pbuf), 283 (u_int64_t)dp->disksize * dp->blksize); 284 aprint_normal( 285 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 286 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 287 (unsigned long long)dp->disksize); 288 break; 289 290 case SDGP_RESULT_OFFLINE: 291 aprint_normal("drive offline"); 292 break; 293 294 case SDGP_RESULT_UNFORMATTED: 295 aprint_normal("unformatted media"); 296 break; 297 298 #ifdef DIAGNOSTIC 299 default: 300 panic("sdattach: unknown result from get_parms"); 301 break; 302 #endif 303 } 304 aprint_normal("\n"); 305 306 /* 307 * Establish a shutdown hook so that we can ensure that 308 * our data has actually made it onto the platter at 309 * shutdown time. Note that this relies on the fact 310 * that the shutdown hook code puts us at the head of 311 * the list (thus guaranteeing that our hook runs before 312 * our ancestors'). 313 */ 314 if ((sd->sc_sdhook = 315 shutdownhook_establish(sd_shutdown, sd)) == NULL) 316 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 317 sd->sc_dev.dv_xname); 318 319 #if NRND > 0 320 /* 321 * attach the device into the random source list 322 */ 323 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 324 RND_TYPE_DISK, 0); 325 #endif 326 327 /* Discover wedges on this disk. */ 328 dkwedge_discover(&sd->sc_dk); 329 } 330 331 static int 332 sdactivate(struct device *self, enum devact act) 333 { 334 int rv = 0; 335 336 switch (act) { 337 case DVACT_ACTIVATE: 338 rv = EOPNOTSUPP; 339 break; 340 341 case DVACT_DEACTIVATE: 342 /* 343 * Nothing to do; we key off the device's DVF_ACTIVE. 344 */ 345 break; 346 } 347 return (rv); 348 } 349 350 static int 351 sddetach(struct device *self, int flags) 352 { 353 struct sd_softc *sd = device_private(self); 354 int s, bmaj, cmaj, i, mn; 355 356 /* locate the major number */ 357 bmaj = bdevsw_lookup_major(&sd_bdevsw); 358 cmaj = cdevsw_lookup_major(&sd_cdevsw); 359 360 /* Nuke the vnodes for any open instances */ 361 for (i = 0; i < MAXPARTITIONS; i++) { 362 mn = SDMINOR(device_unit(self), i); 363 vdevgone(bmaj, mn, mn, VBLK); 364 vdevgone(cmaj, mn, mn, VCHR); 365 } 366 367 /* kill any pending restart */ 368 callout_stop(&sd->sc_callout); 369 370 /* Delete all of our wedges. */ 371 dkwedge_delall(&sd->sc_dk); 372 373 s = splbio(); 374 375 /* Kill off any queued buffers. */ 376 bufq_drain(sd->buf_queue); 377 378 bufq_free(sd->buf_queue); 379 380 /* Kill off any pending commands. */ 381 scsipi_kill_pending(sd->sc_periph); 382 383 splx(s); 384 385 /* Detach from the disk list. */ 386 disk_detach(&sd->sc_dk); 387 388 /* Get rid of the shutdown hook. */ 389 shutdownhook_disestablish(sd->sc_sdhook); 390 391 #if NRND > 0 392 /* Unhook the entropy source. */ 393 rnd_detach_source(&sd->rnd_source); 394 #endif 395 396 return (0); 397 } 398 399 /* 400 * open the device. Make sure the partition info is a up-to-date as can be. 401 */ 402 static int 403 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 404 { 405 struct sd_softc *sd; 406 struct scsipi_periph *periph; 407 struct scsipi_adapter *adapt; 408 int unit, part; 409 int error; 410 411 unit = SDUNIT(dev); 412 if (unit >= sd_cd.cd_ndevs) 413 return (ENXIO); 414 sd = sd_cd.cd_devs[unit]; 415 if (sd == NULL) 416 return (ENXIO); 417 418 if (!device_is_active(&sd->sc_dev)) 419 return (ENODEV); 420 421 part = SDPART(dev); 422 423 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 424 return (error); 425 426 /* 427 * If there are wedges, and this is not RAW_PART, then we 428 * need to fail. 429 */ 430 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 431 error = EBUSY; 432 goto bad1; 433 } 434 435 periph = sd->sc_periph; 436 adapt = periph->periph_channel->chan_adapter; 437 438 SC_DEBUG(periph, SCSIPI_DB1, 439 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 440 sd_cd.cd_ndevs, part)); 441 442 /* 443 * If this is the first open of this device, add a reference 444 * to the adapter. 445 */ 446 if (sd->sc_dk.dk_openmask == 0 && 447 (error = scsipi_adapter_addref(adapt)) != 0) 448 goto bad1; 449 450 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 451 /* 452 * If any partition is open, but the disk has been invalidated, 453 * disallow further opens of non-raw partition 454 */ 455 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 456 (part != RAW_PART || fmt != S_IFCHR)) { 457 error = EIO; 458 goto bad2; 459 } 460 } else { 461 int silent; 462 463 if (part == RAW_PART && fmt == S_IFCHR) 464 silent = XS_CTL_SILENT; 465 else 466 silent = 0; 467 468 /* Check that it is still responding and ok. */ 469 error = scsipi_test_unit_ready(periph, 470 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 471 silent); 472 473 /* 474 * Start the pack spinning if necessary. Always allow the 475 * raw parition to be opened, for raw IOCTLs. Data transfers 476 * will check for SDEV_MEDIA_LOADED. 477 */ 478 if (error == EIO) { 479 int error2; 480 481 error2 = scsipi_start(periph, SSS_START, silent); 482 switch (error2) { 483 case 0: 484 error = 0; 485 break; 486 case EIO: 487 case EINVAL: 488 break; 489 default: 490 error = error2; 491 break; 492 } 493 } 494 if (error) { 495 if (silent) 496 goto out; 497 goto bad2; 498 } 499 500 periph->periph_flags |= PERIPH_OPEN; 501 502 if (periph->periph_flags & PERIPH_REMOVABLE) { 503 /* Lock the pack in. */ 504 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 505 XS_CTL_IGNORE_ILLEGAL_REQUEST | 506 XS_CTL_IGNORE_MEDIA_CHANGE | 507 XS_CTL_SILENT); 508 if (error) 509 goto bad3; 510 } 511 512 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 513 int param_error; 514 periph->periph_flags |= PERIPH_MEDIA_LOADED; 515 516 /* 517 * Load the physical device parameters. 518 * 519 * Note that if media is present but unformatted, 520 * we allow the open (so that it can be formatted!). 521 * The drive should refuse real I/O, if the media is 522 * unformatted. 523 */ 524 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 525 == SDGP_RESULT_OFFLINE) { 526 error = ENXIO; 527 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 528 goto bad3; 529 } 530 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 531 532 /* Load the partition info if not already loaded. */ 533 if (param_error == 0) { 534 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 535 error = EIO; 536 goto bad3; 537 } 538 SC_DEBUG(periph, SCSIPI_DB3, 539 ("Disklabel loaded ")); 540 } 541 } 542 } 543 544 /* Check that the partition exists. */ 545 if (part != RAW_PART && 546 (part >= sd->sc_dk.dk_label->d_npartitions || 547 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 548 error = ENXIO; 549 goto bad3; 550 } 551 552 out: /* Insure only one open at a time. */ 553 switch (fmt) { 554 case S_IFCHR: 555 sd->sc_dk.dk_copenmask |= (1 << part); 556 break; 557 case S_IFBLK: 558 sd->sc_dk.dk_bopenmask |= (1 << part); 559 break; 560 } 561 sd->sc_dk.dk_openmask = 562 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 563 564 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 565 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 566 return (0); 567 568 bad3: 569 if (sd->sc_dk.dk_openmask == 0) { 570 if (periph->periph_flags & PERIPH_REMOVABLE) 571 scsipi_prevent(periph, SPAMR_ALLOW, 572 XS_CTL_IGNORE_ILLEGAL_REQUEST | 573 XS_CTL_IGNORE_MEDIA_CHANGE | 574 XS_CTL_SILENT); 575 periph->periph_flags &= ~PERIPH_OPEN; 576 } 577 578 bad2: 579 if (sd->sc_dk.dk_openmask == 0) 580 scsipi_adapter_delref(adapt); 581 582 bad1: 583 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 584 return (error); 585 } 586 587 /* 588 * close the device.. only called if we are the LAST occurence of an open 589 * device. Convenient now but usually a pain. 590 */ 591 static int 592 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 593 { 594 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 595 struct scsipi_periph *periph = sd->sc_periph; 596 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 597 int part = SDPART(dev); 598 int error; 599 600 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 601 return (error); 602 603 switch (fmt) { 604 case S_IFCHR: 605 sd->sc_dk.dk_copenmask &= ~(1 << part); 606 break; 607 case S_IFBLK: 608 sd->sc_dk.dk_bopenmask &= ~(1 << part); 609 break; 610 } 611 sd->sc_dk.dk_openmask = 612 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 613 614 if (sd->sc_dk.dk_openmask == 0) { 615 /* 616 * If the disk cache needs flushing, and the disk supports 617 * it, do it now. 618 */ 619 if ((sd->flags & SDF_DIRTY) != 0) { 620 if (sd_flush(sd, 0)) { 621 printf("%s: cache synchronization failed\n", 622 sd->sc_dev.dv_xname); 623 sd->flags &= ~SDF_FLUSHING; 624 } else 625 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 626 } 627 628 scsipi_wait_drain(periph); 629 630 if (periph->periph_flags & PERIPH_REMOVABLE) 631 scsipi_prevent(periph, SPAMR_ALLOW, 632 XS_CTL_IGNORE_ILLEGAL_REQUEST | 633 XS_CTL_IGNORE_NOT_READY | 634 XS_CTL_SILENT); 635 periph->periph_flags &= ~PERIPH_OPEN; 636 637 scsipi_wait_drain(periph); 638 639 scsipi_adapter_delref(adapt); 640 } 641 642 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 643 return (0); 644 } 645 646 /* 647 * Actually translate the requested transfer into one the physical driver 648 * can understand. The transfer is described by a buf and will include 649 * only one physical transfer. 650 */ 651 static void 652 sdstrategy(struct buf *bp) 653 { 654 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 655 struct scsipi_periph *periph = sd->sc_periph; 656 struct disklabel *lp; 657 daddr_t blkno; 658 int s; 659 boolean_t sector_aligned; 660 661 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 662 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 663 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 664 /* 665 * If the device has been made invalid, error out 666 */ 667 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 668 !device_is_active(&sd->sc_dev)) { 669 if (periph->periph_flags & PERIPH_OPEN) 670 bp->b_error = EIO; 671 else 672 bp->b_error = ENODEV; 673 goto bad; 674 } 675 676 lp = sd->sc_dk.dk_label; 677 678 /* 679 * The transfer must be a whole number of blocks, offset must not be 680 * negative. 681 */ 682 if (lp->d_secsize == DEV_BSIZE) { 683 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 684 } else { 685 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 686 } 687 if (!sector_aligned || bp->b_blkno < 0) { 688 bp->b_error = EINVAL; 689 goto bad; 690 } 691 /* 692 * If it's a null transfer, return immediatly 693 */ 694 if (bp->b_bcount == 0) 695 goto done; 696 697 /* 698 * Do bounds checking, adjust transfer. if error, process. 699 * If end of partition, just return. 700 */ 701 if (SDPART(bp->b_dev) == RAW_PART) { 702 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 703 sd->params.disksize512) <= 0) 704 goto done; 705 } else { 706 if (bounds_check_with_label(&sd->sc_dk, bp, 707 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 708 goto done; 709 } 710 711 /* 712 * Now convert the block number to absolute and put it in 713 * terms of the device's logical block size. 714 */ 715 if (lp->d_secsize == DEV_BSIZE) 716 blkno = bp->b_blkno; 717 else if (lp->d_secsize > DEV_BSIZE) 718 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 719 else 720 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 721 722 if (SDPART(bp->b_dev) != RAW_PART) 723 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 724 725 bp->b_rawblkno = blkno; 726 727 s = splbio(); 728 729 /* 730 * Place it in the queue of disk activities for this disk. 731 * 732 * XXX Only do disksort() if the current operating mode does not 733 * XXX include tagged queueing. 734 */ 735 BUFQ_PUT(sd->buf_queue, bp); 736 737 /* 738 * Tell the device to get going on the transfer if it's 739 * not doing anything, otherwise just wait for completion 740 */ 741 sdstart(sd->sc_periph); 742 743 splx(s); 744 return; 745 746 bad: 747 bp->b_flags |= B_ERROR; 748 done: 749 /* 750 * Correctly set the buf to indicate a completed xfer 751 */ 752 bp->b_resid = bp->b_bcount; 753 biodone(bp); 754 } 755 756 /* 757 * sdstart looks to see if there is a buf waiting for the device 758 * and that the device is not already busy. If both are true, 759 * It dequeues the buf and creates a scsi command to perform the 760 * transfer in the buf. The transfer request will call scsipi_done 761 * on completion, which will in turn call this routine again 762 * so that the next queued transfer is performed. 763 * The bufs are queued by the strategy routine (sdstrategy) 764 * 765 * This routine is also called after other non-queued requests 766 * have been made of the scsi driver, to ensure that the queue 767 * continues to be drained. 768 * 769 * must be called at the correct (highish) spl level 770 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 771 */ 772 static void 773 sdstart(struct scsipi_periph *periph) 774 { 775 struct sd_softc *sd = (void *)periph->periph_dev; 776 struct disklabel *lp = sd->sc_dk.dk_label; 777 struct buf *bp = 0; 778 struct scsipi_rw_16 cmd16; 779 struct scsipi_rw_10 cmd_big; 780 struct scsi_rw_6 cmd_small; 781 struct scsipi_generic *cmdp; 782 struct scsipi_xfer *xs; 783 int nblks, cmdlen, error, flags; 784 785 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 786 /* 787 * Check if the device has room for another command 788 */ 789 while (periph->periph_active < periph->periph_openings) { 790 /* 791 * there is excess capacity, but a special waits 792 * It'll need the adapter as soon as we clear out of the 793 * way and let it run (user level wait). 794 */ 795 if (periph->periph_flags & PERIPH_WAITING) { 796 periph->periph_flags &= ~PERIPH_WAITING; 797 wakeup((caddr_t)periph); 798 return; 799 } 800 801 /* 802 * If the device has become invalid, abort all the 803 * reads and writes until all files have been closed and 804 * re-opened 805 */ 806 if (__predict_false( 807 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 808 if ((bp = BUFQ_GET(sd->buf_queue)) != NULL) { 809 bp->b_error = EIO; 810 bp->b_flags |= B_ERROR; 811 bp->b_resid = bp->b_bcount; 812 biodone(bp); 813 continue; 814 } else { 815 return; 816 } 817 } 818 819 /* 820 * See if there is a buf with work for us to do.. 821 */ 822 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 823 return; 824 825 /* 826 * We have a buf, now we should make a command. 827 */ 828 829 if (lp->d_secsize == DEV_BSIZE) 830 nblks = bp->b_bcount >> DEV_BSHIFT; 831 else 832 nblks = howmany(bp->b_bcount, lp->d_secsize); 833 834 /* 835 * Fill out the scsi command. Use the smallest CDB possible 836 * (6-byte, 10-byte, or 16-byte). 837 */ 838 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 839 ((nblks & 0xff) == nblks) && 840 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 841 /* 6-byte CDB */ 842 memset(&cmd_small, 0, sizeof(cmd_small)); 843 cmd_small.opcode = (bp->b_flags & B_READ) ? 844 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 845 _lto3b(bp->b_rawblkno, cmd_small.addr); 846 cmd_small.length = nblks & 0xff; 847 cmdlen = sizeof(cmd_small); 848 cmdp = (struct scsipi_generic *)&cmd_small; 849 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 850 /* 10-byte CDB */ 851 memset(&cmd_big, 0, sizeof(cmd_big)); 852 cmd_big.opcode = (bp->b_flags & B_READ) ? 853 READ_10 : WRITE_10; 854 _lto4b(bp->b_rawblkno, cmd_big.addr); 855 _lto2b(nblks, cmd_big.length); 856 cmdlen = sizeof(cmd_big); 857 cmdp = (struct scsipi_generic *)&cmd_big; 858 } else { 859 /* 16-byte CDB */ 860 memset(&cmd16, 0, sizeof(cmd16)); 861 cmd16.opcode = (bp->b_flags & B_READ) ? 862 READ_16 : WRITE_16; 863 _lto8b(bp->b_rawblkno, cmd16.addr); 864 _lto4b(nblks, cmd16.length); 865 cmdlen = sizeof(cmd16); 866 cmdp = (struct scsipi_generic *)&cmd16; 867 } 868 869 /* Instrumentation. */ 870 disk_busy(&sd->sc_dk); 871 872 /* 873 * Mark the disk dirty so that the cache will be 874 * flushed on close. 875 */ 876 if ((bp->b_flags & B_READ) == 0) 877 sd->flags |= SDF_DIRTY; 878 879 /* 880 * Figure out what flags to use. 881 */ 882 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 883 if (bp->b_flags & B_READ) 884 flags |= XS_CTL_DATA_IN; 885 else 886 flags |= XS_CTL_DATA_OUT; 887 888 /* 889 * Call the routine that chats with the adapter. 890 * Note: we cannot sleep as we may be an interrupt 891 */ 892 xs = scsipi_make_xs(periph, cmdp, cmdlen, 893 (u_char *)bp->b_data, bp->b_bcount, 894 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 895 if (__predict_false(xs == NULL)) { 896 /* 897 * out of memory. Keep this buffer in the queue, and 898 * retry later. 899 */ 900 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 901 periph); 902 return; 903 } 904 /* 905 * need to dequeue the buffer before queuing the command, 906 * because cdstart may be called recursively from the 907 * HBA driver 908 */ 909 #ifdef DIAGNOSTIC 910 if (BUFQ_GET(sd->buf_queue) != bp) 911 panic("sdstart(): dequeued wrong buf"); 912 #else 913 BUFQ_GET(sd->buf_queue); 914 #endif 915 error = scsipi_execute_xs(xs); 916 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 917 KASSERT(error == 0); 918 } 919 } 920 921 static void 922 sdrestart(void *v) 923 { 924 int s = splbio(); 925 sdstart((struct scsipi_periph *)v); 926 splx(s); 927 } 928 929 static void 930 sddone(struct scsipi_xfer *xs, int error) 931 { 932 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 933 struct buf *bp = xs->bp; 934 935 if (sd->flags & SDF_FLUSHING) { 936 /* Flush completed, no longer dirty. */ 937 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 938 } 939 940 if (bp) { 941 bp->b_error = error; 942 bp->b_resid = xs->resid; 943 if (error) { 944 /* on a read/write error bp->b_resid is zero, so fix */ 945 bp->b_resid =bp->b_bcount; 946 bp->b_flags |= B_ERROR; 947 } 948 949 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 950 (bp->b_flags & B_READ)); 951 #if NRND > 0 952 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 953 #endif 954 955 biodone(bp); 956 } 957 } 958 959 static void 960 sdminphys(struct buf *bp) 961 { 962 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 963 long xmax; 964 965 /* 966 * If the device is ancient, we want to make sure that 967 * the transfer fits into a 6-byte cdb. 968 * 969 * XXX Note that the SCSI-I spec says that 256-block transfers 970 * are allowed in a 6-byte read/write, and are specified 971 * by settng the "length" to 0. However, we're conservative 972 * here, allowing only 255-block transfers in case an 973 * ancient device gets confused by length == 0. A length of 0 974 * in a 10-byte read/write actually means 0 blocks. 975 */ 976 if ((sd->flags & SDF_ANCIENT) && 977 ((sd->sc_periph->periph_flags & 978 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 979 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 980 981 if (bp->b_bcount > xmax) 982 bp->b_bcount = xmax; 983 } 984 985 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 986 } 987 988 static int 989 sdread(dev_t dev, struct uio *uio, int ioflag) 990 { 991 992 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 993 } 994 995 static int 996 sdwrite(dev_t dev, struct uio *uio, int ioflag) 997 { 998 999 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1000 } 1001 1002 /* 1003 * Perform special action on behalf of the user 1004 * Knows about the internals of this device 1005 */ 1006 static int 1007 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l) 1008 { 1009 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1010 struct scsipi_periph *periph = sd->sc_periph; 1011 int part = SDPART(dev); 1012 int error = 0; 1013 #ifdef __HAVE_OLD_DISKLABEL 1014 struct disklabel *newlabel = NULL; 1015 #endif 1016 1017 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1018 1019 /* 1020 * If the device is not valid, some IOCTLs can still be 1021 * handled on the raw partition. Check this here. 1022 */ 1023 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1024 switch (cmd) { 1025 case DIOCKLABEL: 1026 case DIOCWLABEL: 1027 case DIOCLOCK: 1028 case DIOCEJECT: 1029 case ODIOCEJECT: 1030 case DIOCGCACHE: 1031 case DIOCSCACHE: 1032 case SCIOCIDENTIFY: 1033 case OSCIOCIDENTIFY: 1034 case SCIOCCOMMAND: 1035 case SCIOCDEBUG: 1036 if (part == RAW_PART) 1037 break; 1038 /* FALLTHROUGH */ 1039 default: 1040 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1041 return (ENODEV); 1042 else 1043 return (EIO); 1044 } 1045 } 1046 1047 switch (cmd) { 1048 case DIOCGDINFO: 1049 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1050 return (0); 1051 1052 #ifdef __HAVE_OLD_DISKLABEL 1053 case ODIOCGDINFO: 1054 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1055 if (newlabel == NULL) 1056 return EIO; 1057 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1058 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1059 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1060 else 1061 error = ENOTTY; 1062 free(newlabel, M_TEMP); 1063 return error; 1064 #endif 1065 1066 case DIOCGPART: 1067 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1068 ((struct partinfo *)addr)->part = 1069 &sd->sc_dk.dk_label->d_partitions[part]; 1070 return (0); 1071 1072 case DIOCWDINFO: 1073 case DIOCSDINFO: 1074 #ifdef __HAVE_OLD_DISKLABEL 1075 case ODIOCWDINFO: 1076 case ODIOCSDINFO: 1077 #endif 1078 { 1079 struct disklabel *lp; 1080 1081 if ((flag & FWRITE) == 0) 1082 return (EBADF); 1083 1084 #ifdef __HAVE_OLD_DISKLABEL 1085 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1086 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1087 if (newlabel == NULL) 1088 return EIO; 1089 memset(newlabel, 0, sizeof newlabel); 1090 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1091 lp = newlabel; 1092 } else 1093 #endif 1094 lp = (struct disklabel *)addr; 1095 1096 if ((error = lockmgr(&sd->sc_dk.dk_openlock, 1097 LK_EXCLUSIVE, NULL)) != 0) 1098 goto bad; 1099 sd->flags |= SDF_LABELLING; 1100 1101 error = setdisklabel(sd->sc_dk.dk_label, 1102 lp, /*sd->sc_dk.dk_openmask : */0, 1103 sd->sc_dk.dk_cpulabel); 1104 if (error == 0) { 1105 if (cmd == DIOCWDINFO 1106 #ifdef __HAVE_OLD_DISKLABEL 1107 || cmd == ODIOCWDINFO 1108 #endif 1109 ) 1110 error = writedisklabel(SDLABELDEV(dev), 1111 sdstrategy, sd->sc_dk.dk_label, 1112 sd->sc_dk.dk_cpulabel); 1113 } 1114 1115 sd->flags &= ~SDF_LABELLING; 1116 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1117 bad: 1118 #ifdef __HAVE_OLD_DISKLABEL 1119 if (newlabel != NULL) 1120 free(newlabel, M_TEMP); 1121 #endif 1122 return (error); 1123 } 1124 1125 case DIOCKLABEL: 1126 if (*(int *)addr) 1127 periph->periph_flags |= PERIPH_KEEP_LABEL; 1128 else 1129 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1130 return (0); 1131 1132 case DIOCWLABEL: 1133 if ((flag & FWRITE) == 0) 1134 return (EBADF); 1135 if (*(int *)addr) 1136 sd->flags |= SDF_WLABEL; 1137 else 1138 sd->flags &= ~SDF_WLABEL; 1139 return (0); 1140 1141 case DIOCLOCK: 1142 if (periph->periph_flags & PERIPH_REMOVABLE) 1143 return (scsipi_prevent(periph, 1144 (*(int *)addr) ? 1145 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1146 else 1147 return (ENOTTY); 1148 1149 case DIOCEJECT: 1150 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1151 return (ENOTTY); 1152 if (*(int *)addr == 0) { 1153 /* 1154 * Don't force eject: check that we are the only 1155 * partition open. If so, unlock it. 1156 */ 1157 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1158 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1159 sd->sc_dk.dk_openmask) { 1160 error = scsipi_prevent(periph, SPAMR_ALLOW, 1161 XS_CTL_IGNORE_NOT_READY); 1162 if (error) 1163 return (error); 1164 } else { 1165 return (EBUSY); 1166 } 1167 } 1168 /* FALLTHROUGH */ 1169 case ODIOCEJECT: 1170 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1171 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1172 1173 case DIOCGDEFLABEL: 1174 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1175 return (0); 1176 1177 #ifdef __HAVE_OLD_DISKLABEL 1178 case ODIOCGDEFLABEL: 1179 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1180 if (newlabel == NULL) 1181 return EIO; 1182 sdgetdefaultlabel(sd, newlabel); 1183 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1184 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1185 else 1186 error = ENOTTY; 1187 free(newlabel, M_TEMP); 1188 return error; 1189 #endif 1190 1191 case DIOCGCACHE: 1192 return (sd_getcache(sd, (int *) addr)); 1193 1194 case DIOCSCACHE: 1195 if ((flag & FWRITE) == 0) 1196 return (EBADF); 1197 return (sd_setcache(sd, *(int *) addr)); 1198 1199 case DIOCCACHESYNC: 1200 /* 1201 * XXX Do we really need to care about having a writable 1202 * file descriptor here? 1203 */ 1204 if ((flag & FWRITE) == 0) 1205 return (EBADF); 1206 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1207 error = sd_flush(sd, 0); 1208 if (error) 1209 sd->flags &= ~SDF_FLUSHING; 1210 else 1211 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1212 } else 1213 error = 0; 1214 return (error); 1215 1216 case DIOCAWEDGE: 1217 { 1218 struct dkwedge_info *dkw = (void *) addr; 1219 1220 if ((flag & FWRITE) == 0) 1221 return (EBADF); 1222 1223 /* If the ioctl happens here, the parent is us. */ 1224 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1225 return (dkwedge_add(dkw)); 1226 } 1227 1228 case DIOCDWEDGE: 1229 { 1230 struct dkwedge_info *dkw = (void *) addr; 1231 1232 if ((flag & FWRITE) == 0) 1233 return (EBADF); 1234 1235 /* If the ioctl happens here, the parent is us. */ 1236 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1237 return (dkwedge_del(dkw)); 1238 } 1239 1240 case DIOCLWEDGES: 1241 { 1242 struct dkwedge_list *dkwl = (void *) addr; 1243 1244 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1245 } 1246 1247 default: 1248 if (part != RAW_PART) 1249 return (ENOTTY); 1250 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1251 } 1252 1253 #ifdef DIAGNOSTIC 1254 panic("sdioctl: impossible"); 1255 #endif 1256 } 1257 1258 static void 1259 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1260 { 1261 1262 memset(lp, 0, sizeof(struct disklabel)); 1263 1264 lp->d_secsize = sd->params.blksize; 1265 lp->d_ntracks = sd->params.heads; 1266 lp->d_nsectors = sd->params.sectors; 1267 lp->d_ncylinders = sd->params.cyls; 1268 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1269 1270 switch (scsipi_periph_bustype(sd->sc_periph)) { 1271 case SCSIPI_BUSTYPE_SCSI: 1272 lp->d_type = DTYPE_SCSI; 1273 break; 1274 case SCSIPI_BUSTYPE_ATAPI: 1275 lp->d_type = DTYPE_ATAPI; 1276 break; 1277 } 1278 /* 1279 * XXX 1280 * We could probe the mode pages to figure out what kind of disc it is. 1281 * Is this worthwhile? 1282 */ 1283 strncpy(lp->d_typename, "mydisk", 16); 1284 strncpy(lp->d_packname, "fictitious", 16); 1285 lp->d_secperunit = sd->params.disksize; 1286 lp->d_rpm = sd->params.rot_rate; 1287 lp->d_interleave = 1; 1288 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1289 D_REMOVABLE : 0; 1290 1291 lp->d_partitions[RAW_PART].p_offset = 0; 1292 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1293 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1294 lp->d_npartitions = RAW_PART + 1; 1295 1296 lp->d_magic = DISKMAGIC; 1297 lp->d_magic2 = DISKMAGIC; 1298 lp->d_checksum = dkcksum(lp); 1299 } 1300 1301 1302 /* 1303 * Load the label information on the named device 1304 */ 1305 static int 1306 sdgetdisklabel(struct sd_softc *sd) 1307 { 1308 struct disklabel *lp = sd->sc_dk.dk_label; 1309 const char *errstring; 1310 1311 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1312 1313 sdgetdefaultlabel(sd, lp); 1314 1315 if (lp->d_secpercyl == 0) { 1316 lp->d_secpercyl = 100; 1317 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1318 } 1319 1320 /* 1321 * Call the generic disklabel extraction routine 1322 */ 1323 errstring = readdisklabel(MAKESDDEV(0, device_unit(&sd->sc_dev), 1324 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1325 if (errstring) { 1326 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1327 return EIO; 1328 } 1329 return 0; 1330 } 1331 1332 static void 1333 sd_shutdown(void *arg) 1334 { 1335 struct sd_softc *sd = arg; 1336 1337 /* 1338 * If the disk cache needs to be flushed, and the disk supports 1339 * it, flush it. We're cold at this point, so we poll for 1340 * completion. 1341 */ 1342 if ((sd->flags & SDF_DIRTY) != 0) { 1343 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1344 printf("%s: cache synchronization failed\n", 1345 sd->sc_dev.dv_xname); 1346 sd->flags &= ~SDF_FLUSHING; 1347 } else 1348 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1349 } 1350 } 1351 1352 /* 1353 * Check Errors 1354 */ 1355 static int 1356 sd_interpret_sense(struct scsipi_xfer *xs) 1357 { 1358 struct scsipi_periph *periph = xs->xs_periph; 1359 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1360 struct sd_softc *sd = (void *)periph->periph_dev; 1361 int s, error, retval = EJUSTRETURN; 1362 1363 /* 1364 * If the periph is already recovering, just do the normal 1365 * error processing. 1366 */ 1367 if (periph->periph_flags & PERIPH_RECOVERING) 1368 return (retval); 1369 1370 /* 1371 * Ignore errors from accessing illegal fields (e.g. trying to 1372 * lock the door of a digicam, which doesn't have a door that 1373 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1374 */ 1375 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1376 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1377 sense->asc == 0x24 && 1378 sense->ascq == 0x00) { /* Illegal field in CDB */ 1379 if (!(xs->xs_control & XS_CTL_SILENT)) { 1380 scsipi_printaddr(periph); 1381 printf("no door lock\n"); 1382 } 1383 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1384 return (retval); 1385 } 1386 1387 1388 1389 /* 1390 * If the device is not open yet, let the generic code handle it. 1391 */ 1392 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1393 return (retval); 1394 1395 /* 1396 * If it isn't a extended or extended/deferred error, let 1397 * the generic code handle it. 1398 */ 1399 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1400 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1401 return (retval); 1402 1403 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1404 sense->asc == 0x4) { 1405 if (sense->ascq == 0x01) { 1406 /* 1407 * Unit In The Process Of Becoming Ready. 1408 */ 1409 printf("%s: waiting for pack to spin up...\n", 1410 sd->sc_dev.dv_xname); 1411 if (!callout_pending(&periph->periph_callout)) 1412 scsipi_periph_freeze(periph, 1); 1413 callout_reset(&periph->periph_callout, 1414 5 * hz, scsipi_periph_timed_thaw, periph); 1415 retval = ERESTART; 1416 } else if (sense->ascq == 0x02) { 1417 printf("%s: pack is stopped, restarting...\n", 1418 sd->sc_dev.dv_xname); 1419 s = splbio(); 1420 periph->periph_flags |= PERIPH_RECOVERING; 1421 splx(s); 1422 error = scsipi_start(periph, SSS_START, 1423 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1424 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1425 if (error) { 1426 printf("%s: unable to restart pack\n", 1427 sd->sc_dev.dv_xname); 1428 retval = error; 1429 } else 1430 retval = ERESTART; 1431 s = splbio(); 1432 periph->periph_flags &= ~PERIPH_RECOVERING; 1433 splx(s); 1434 } 1435 } 1436 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1437 sense->asc == 0x31 && 1438 sense->ascq == 0x00) { /* maybe for any asq ? */ 1439 /* Medium Format Corrupted */ 1440 retval = EFTYPE; 1441 } 1442 return (retval); 1443 } 1444 1445 1446 static int 1447 sdsize(dev_t dev) 1448 { 1449 struct sd_softc *sd; 1450 int part, unit, omask; 1451 int size; 1452 1453 unit = SDUNIT(dev); 1454 if (unit >= sd_cd.cd_ndevs) 1455 return (-1); 1456 sd = sd_cd.cd_devs[unit]; 1457 if (sd == NULL) 1458 return (-1); 1459 1460 if (!device_is_active(&sd->sc_dev)) 1461 return (-1); 1462 1463 part = SDPART(dev); 1464 omask = sd->sc_dk.dk_openmask & (1 << part); 1465 1466 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1467 return (-1); 1468 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1469 size = -1; 1470 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1471 size = -1; 1472 else 1473 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1474 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1475 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1476 return (-1); 1477 return (size); 1478 } 1479 1480 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1481 static struct scsipi_xfer sx; 1482 static int sddoingadump; 1483 1484 /* 1485 * dump all of physical memory into the partition specified, starting 1486 * at offset 'dumplo' into the partition. 1487 */ 1488 static int 1489 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1490 { 1491 struct sd_softc *sd; /* disk unit to do the I/O */ 1492 struct disklabel *lp; /* disk's disklabel */ 1493 int unit, part; 1494 int sectorsize; /* size of a disk sector */ 1495 int nsects; /* number of sectors in partition */ 1496 int sectoff; /* sector offset of partition */ 1497 int totwrt; /* total number of sectors left to write */ 1498 int nwrt; /* current number of sectors to write */ 1499 struct scsipi_rw_10 cmd; /* write command */ 1500 struct scsipi_xfer *xs; /* ... convenience */ 1501 struct scsipi_periph *periph; 1502 struct scsipi_channel *chan; 1503 1504 /* Check if recursive dump; if so, punt. */ 1505 if (sddoingadump) 1506 return (EFAULT); 1507 1508 /* Mark as active early. */ 1509 sddoingadump = 1; 1510 1511 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1512 part = SDPART(dev); 1513 1514 /* Check for acceptable drive number. */ 1515 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1516 return (ENXIO); 1517 1518 if (!device_is_active(&sd->sc_dev)) 1519 return (ENODEV); 1520 1521 periph = sd->sc_periph; 1522 chan = periph->periph_channel; 1523 1524 /* Make sure it was initialized. */ 1525 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1526 return (ENXIO); 1527 1528 /* Convert to disk sectors. Request must be a multiple of size. */ 1529 lp = sd->sc_dk.dk_label; 1530 sectorsize = lp->d_secsize; 1531 if ((size % sectorsize) != 0) 1532 return (EFAULT); 1533 totwrt = size / sectorsize; 1534 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1535 1536 nsects = lp->d_partitions[part].p_size; 1537 sectoff = lp->d_partitions[part].p_offset; 1538 1539 /* Check transfer bounds against partition size. */ 1540 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1541 return (EINVAL); 1542 1543 /* Offset block number to start of partition. */ 1544 blkno += sectoff; 1545 1546 xs = &sx; 1547 1548 while (totwrt > 0) { 1549 nwrt = totwrt; /* XXX */ 1550 #ifndef SD_DUMP_NOT_TRUSTED 1551 /* 1552 * Fill out the scsi command 1553 */ 1554 memset(&cmd, 0, sizeof(cmd)); 1555 cmd.opcode = WRITE_10; 1556 _lto4b(blkno, cmd.addr); 1557 _lto2b(nwrt, cmd.length); 1558 /* 1559 * Fill out the scsipi_xfer structure 1560 * Note: we cannot sleep as we may be an interrupt 1561 * don't use scsipi_command() as it may want to wait 1562 * for an xs. 1563 */ 1564 memset(xs, 0, sizeof(sx)); 1565 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1566 XS_CTL_DATA_OUT; 1567 xs->xs_status = 0; 1568 xs->xs_periph = periph; 1569 xs->xs_retries = SDRETRIES; 1570 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1571 xs->cmd = (struct scsipi_generic *)&cmd; 1572 xs->cmdlen = sizeof(cmd); 1573 xs->resid = nwrt * sectorsize; 1574 xs->error = XS_NOERROR; 1575 xs->bp = 0; 1576 xs->data = va; 1577 xs->datalen = nwrt * sectorsize; 1578 1579 /* 1580 * Pass all this info to the scsi driver. 1581 */ 1582 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1583 if ((xs->xs_status & XS_STS_DONE) == 0 || 1584 xs->error != XS_NOERROR) 1585 return (EIO); 1586 #else /* SD_DUMP_NOT_TRUSTED */ 1587 /* Let's just talk about this first... */ 1588 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1589 delay(500 * 1000); /* half a second */ 1590 #endif /* SD_DUMP_NOT_TRUSTED */ 1591 1592 /* update block count */ 1593 totwrt -= nwrt; 1594 blkno += nwrt; 1595 va += sectorsize * nwrt; 1596 } 1597 sddoingadump = 0; 1598 return (0); 1599 } 1600 1601 static int 1602 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1603 int page, int flags, int *big) 1604 { 1605 1606 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1607 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1608 *big = 1; 1609 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1610 size + sizeof(struct scsi_mode_parameter_header_10), 1611 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1612 } else { 1613 *big = 0; 1614 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1615 size + sizeof(struct scsi_mode_parameter_header_6), 1616 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1617 } 1618 } 1619 1620 static int 1621 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1622 int flags, int big) 1623 { 1624 1625 if (big) { 1626 struct scsi_mode_parameter_header_10 *header = sense; 1627 1628 _lto2b(0, header->data_length); 1629 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1630 size + sizeof(struct scsi_mode_parameter_header_10), 1631 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1632 } else { 1633 struct scsi_mode_parameter_header_6 *header = sense; 1634 1635 header->data_length = 0; 1636 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1637 size + sizeof(struct scsi_mode_parameter_header_6), 1638 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1639 } 1640 } 1641 1642 /* 1643 * sd_validate_blksize: 1644 * 1645 * Validate the block size. Print error if periph is specified, 1646 */ 1647 static int 1648 sd_validate_blksize(struct scsipi_periph *periph, int len) 1649 { 1650 1651 switch (len) { 1652 case 256: 1653 case 512: 1654 case 1024: 1655 case 2048: 1656 case 4096: 1657 return 1; 1658 } 1659 1660 if (periph) { 1661 scsipi_printaddr(periph); 1662 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1663 (len ^ (1 << (ffs(len) - 1))) ? 1664 "preposterous" : "unsupported", 1665 len, SD_DEFAULT_BLKSIZE); 1666 } 1667 1668 return 0; 1669 } 1670 1671 /* 1672 * sd_read_capacity: 1673 * 1674 * Find out from the device what its capacity is. 1675 */ 1676 static u_int64_t 1677 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1678 { 1679 union { 1680 struct scsipi_read_capacity_10 cmd; 1681 struct scsipi_read_capacity_16 cmd16; 1682 } cmd; 1683 union { 1684 struct scsipi_read_capacity_10_data data; 1685 struct scsipi_read_capacity_16_data data16; 1686 } data; 1687 1688 memset(&cmd, 0, sizeof(cmd)); 1689 cmd.cmd.opcode = READ_CAPACITY_10; 1690 1691 /* 1692 * If the command works, interpret the result as a 4 byte 1693 * number of blocks 1694 */ 1695 memset(&data.data, 0, sizeof(data.data)); 1696 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1697 (void *)&data.data, sizeof(data.data), SCSIPIRETRIES, 20000, NULL, 1698 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK | XS_CTL_SILENT) != 0) 1699 return (0); 1700 1701 if (_4btol(data.data.addr) != 0xffffffff) { 1702 *blksize = _4btol(data.data.length); 1703 return (_4btol(data.data.addr) + 1); 1704 } 1705 1706 /* 1707 * Device is larger than can be reflected by READ CAPACITY (10). 1708 * Try READ CAPACITY (16). 1709 */ 1710 1711 memset(&cmd, 0, sizeof(cmd)); 1712 cmd.cmd16.opcode = READ_CAPACITY_16; 1713 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1714 _lto4b(sizeof(data.data16), cmd.cmd16.len); 1715 1716 memset(&data.data16, 0, sizeof(data.data16)); 1717 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1718 (void *)&data.data16, sizeof(data.data16), SCSIPIRETRIES, 20000, 1719 NULL, 1720 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK | XS_CTL_SILENT) != 0) 1721 return (0); 1722 1723 *blksize = _4btol(data.data16.length); 1724 return (_8btol(data.data16.addr) + 1); 1725 } 1726 1727 static int 1728 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1729 { 1730 struct { 1731 struct scsi_mode_parameter_header_6 header; 1732 /* no block descriptor */ 1733 u_int8_t pg_code; /* page code (should be 6) */ 1734 u_int8_t pg_length; /* page length (should be 11) */ 1735 u_int8_t wcd; /* bit0: cache disable */ 1736 u_int8_t lbs[2]; /* logical block size */ 1737 u_int8_t size[5]; /* number of log. blocks */ 1738 u_int8_t pp; /* power/performance */ 1739 u_int8_t flags; 1740 u_int8_t resvd; 1741 } scsipi_sense; 1742 u_int64_t blocks; 1743 int error, blksize; 1744 1745 /* 1746 * sd_read_capacity (ie "read capacity") and mode sense page 6 1747 * give the same information. Do both for now, and check 1748 * for consistency. 1749 * XXX probably differs for removable media 1750 */ 1751 dp->blksize = SD_DEFAULT_BLKSIZE; 1752 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1753 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1754 1755 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1756 &scsipi_sense.header, sizeof(scsipi_sense), 1757 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1758 1759 if (error != 0) 1760 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1761 1762 dp->blksize = blksize; 1763 if (!sd_validate_blksize(NULL, dp->blksize)) 1764 dp->blksize = _2btol(scsipi_sense.lbs); 1765 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1766 dp->blksize = SD_DEFAULT_BLKSIZE; 1767 1768 /* 1769 * Create a pseudo-geometry. 1770 */ 1771 dp->heads = 64; 1772 dp->sectors = 32; 1773 dp->cyls = blocks / (dp->heads * dp->sectors); 1774 dp->disksize = _5btol(scsipi_sense.size); 1775 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1776 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1777 (unsigned long long)dp->disksize, 1778 (unsigned long long)blocks); 1779 dp->disksize = blocks; 1780 } 1781 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1782 1783 return (SDGP_RESULT_OK); 1784 } 1785 1786 /* 1787 * Get the scsi driver to send a full inquiry to the * device and use the 1788 * results to fill out the disk parameter structure. 1789 */ 1790 static int 1791 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1792 { 1793 u_int64_t blocks; 1794 int error, blksize; 1795 #if 0 1796 int i; 1797 u_int8_t *p; 1798 #endif 1799 1800 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1801 flags); 1802 if (blocks == 0) { 1803 struct scsipi_read_format_capacities cmd; 1804 struct { 1805 struct scsipi_capacity_list_header header; 1806 struct scsipi_capacity_descriptor desc; 1807 } __attribute__((packed)) data; 1808 1809 memset(&cmd, 0, sizeof(cmd)); 1810 memset(&data, 0, sizeof(data)); 1811 cmd.opcode = READ_FORMAT_CAPACITIES; 1812 _lto2b(sizeof(data), cmd.length); 1813 1814 error = scsipi_command(sd->sc_periph, 1815 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1816 SDRETRIES, 20000, NULL, 1817 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1818 if (error == EFTYPE) { 1819 /* Medium Format Corrupted, handle as not formatted */ 1820 return (SDGP_RESULT_UNFORMATTED); 1821 } 1822 if (error || data.header.length == 0) 1823 return (SDGP_RESULT_OFFLINE); 1824 1825 #if 0 1826 printf("rfc: length=%d\n", data.header.length); 1827 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"); 1828 #endif 1829 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1830 case SCSIPI_CAP_DESC_CODE_RESERVED: 1831 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1832 break; 1833 1834 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1835 return (SDGP_RESULT_UNFORMATTED); 1836 1837 case SCSIPI_CAP_DESC_CODE_NONE: 1838 return (SDGP_RESULT_OFFLINE); 1839 } 1840 1841 dp->disksize = blocks = _4btol(data.desc.nblks); 1842 if (blocks == 0) 1843 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1844 1845 blksize = _3btol(data.desc.blklen); 1846 1847 } else if (!sd_validate_blksize(NULL, blksize)) { 1848 struct sd_mode_sense_data scsipi_sense; 1849 int big, bsize; 1850 struct scsi_general_block_descriptor *bdesc; 1851 1852 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1853 error = sd_mode_sense(sd, 0, &scsipi_sense, 1854 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1855 if (!error) { 1856 if (big) { 1857 bdesc = (void *)(&scsipi_sense.header.big + 1); 1858 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1859 } else { 1860 bdesc = (void *)(&scsipi_sense.header.small + 1); 1861 bsize = scsipi_sense.header.small.blk_desc_len; 1862 } 1863 1864 #if 0 1865 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1866 printf("page 0 bsize=%d\n", bsize); 1867 printf("page 0 ok\n"); 1868 #endif 1869 1870 if (bsize >= 8) { 1871 blksize = _3btol(bdesc->blklen); 1872 } 1873 } 1874 } 1875 1876 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1877 blksize = SD_DEFAULT_BLKSIZE; 1878 1879 dp->blksize = blksize; 1880 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1881 return (0); 1882 } 1883 1884 static int 1885 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1886 { 1887 struct sd_mode_sense_data scsipi_sense; 1888 int error; 1889 int big, poffset, byte2; 1890 union scsi_disk_pages *pages; 1891 #if 0 1892 int i; 1893 u_int8_t *p; 1894 #endif 1895 1896 byte2 = SMS_DBD; 1897 again: 1898 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1899 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1900 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1901 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1902 flags | XS_CTL_SILENT, &big); 1903 if (error) { 1904 if (byte2 == SMS_DBD) { 1905 /* No result; try once more with DBD off */ 1906 byte2 = 0; 1907 goto again; 1908 } 1909 return (error); 1910 } 1911 1912 if (big) { 1913 poffset = sizeof scsipi_sense.header.big; 1914 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1915 } else { 1916 poffset = sizeof scsipi_sense.header.small; 1917 poffset += scsipi_sense.header.small.blk_desc_len; 1918 } 1919 1920 pages = (void *)((u_long)&scsipi_sense + poffset); 1921 #if 0 1922 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1923 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1924 #endif 1925 1926 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1927 return (ERESTART); 1928 1929 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1930 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1931 _3btol(pages->rigid_geometry.ncyl), 1932 pages->rigid_geometry.nheads, 1933 _2btol(pages->rigid_geometry.st_cyl_wp), 1934 _2btol(pages->rigid_geometry.st_cyl_rwc), 1935 _2btol(pages->rigid_geometry.land_zone))); 1936 1937 /* 1938 * KLUDGE!! (for zone recorded disks) 1939 * give a number of sectors so that sec * trks * cyls 1940 * is <= disk_size 1941 * can lead to wasted space! THINK ABOUT THIS ! 1942 */ 1943 dp->heads = pages->rigid_geometry.nheads; 1944 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1945 if (dp->heads == 0 || dp->cyls == 0) 1946 return (ERESTART); 1947 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1948 1949 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1950 if (dp->rot_rate == 0) 1951 dp->rot_rate = 3600; 1952 1953 #if 0 1954 printf("page 4 ok\n"); 1955 #endif 1956 return (0); 1957 } 1958 1959 static int 1960 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1961 { 1962 struct sd_mode_sense_data scsipi_sense; 1963 int error; 1964 int big, poffset, byte2; 1965 union scsi_disk_pages *pages; 1966 #if 0 1967 int i; 1968 u_int8_t *p; 1969 #endif 1970 1971 byte2 = SMS_DBD; 1972 again: 1973 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1974 error = sd_mode_sense(sd, 0, &scsipi_sense, 1975 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1976 sizeof(scsipi_sense.pages.flex_geometry), 5, 1977 flags | XS_CTL_SILENT, &big); 1978 if (error) { 1979 if (byte2 == SMS_DBD) { 1980 /* No result; try once more with DBD off */ 1981 byte2 = 0; 1982 goto again; 1983 } 1984 return (error); 1985 } 1986 1987 if (big) { 1988 poffset = sizeof scsipi_sense.header.big; 1989 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1990 } else { 1991 poffset = sizeof scsipi_sense.header.small; 1992 poffset += scsipi_sense.header.small.blk_desc_len; 1993 } 1994 1995 pages = (void *)((u_long)&scsipi_sense + poffset); 1996 #if 0 1997 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1998 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1999 #endif 2000 2001 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2002 return (ERESTART); 2003 2004 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2005 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2006 _3btol(pages->flex_geometry.ncyl), 2007 pages->flex_geometry.nheads, 2008 pages->flex_geometry.ph_sec_tr, 2009 _2btol(pages->flex_geometry.bytes_s))); 2010 2011 dp->heads = pages->flex_geometry.nheads; 2012 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2013 dp->sectors = pages->flex_geometry.ph_sec_tr; 2014 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2015 return (ERESTART); 2016 2017 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2018 if (dp->rot_rate == 0) 2019 dp->rot_rate = 3600; 2020 2021 #if 0 2022 printf("page 5 ok\n"); 2023 #endif 2024 return (0); 2025 } 2026 2027 static int 2028 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2029 { 2030 int error; 2031 2032 /* 2033 * If offline, the SDEV_MEDIA_LOADED flag will be 2034 * cleared by the caller if necessary. 2035 */ 2036 if (sd->type == T_SIMPLE_DIRECT) { 2037 error = sd_get_simplifiedparms(sd, dp, flags); 2038 if (!error) 2039 disk_blocksize(&sd->sc_dk, dp->blksize); 2040 return (error); 2041 } 2042 2043 error = sd_get_capacity(sd, dp, flags); 2044 if (error) 2045 return (error); 2046 2047 disk_blocksize(&sd->sc_dk, dp->blksize); 2048 2049 if (sd->type == T_OPTICAL) 2050 goto page0; 2051 2052 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2053 if (!sd_get_parms_page5(sd, dp, flags) || 2054 !sd_get_parms_page4(sd, dp, flags)) 2055 return (SDGP_RESULT_OK); 2056 } else { 2057 if (!sd_get_parms_page4(sd, dp, flags) || 2058 !sd_get_parms_page5(sd, dp, flags)) 2059 return (SDGP_RESULT_OK); 2060 } 2061 2062 page0: 2063 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 2064 /* Try calling driver's method for figuring out geometry. */ 2065 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2066 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2067 (sd->sc_periph, dp, dp->disksize)) { 2068 /* 2069 * Use adaptec standard fictitious geometry 2070 * this depends on which controller (e.g. 1542C is 2071 * different. but we have to put SOMETHING here..) 2072 */ 2073 dp->heads = 64; 2074 dp->sectors = 32; 2075 dp->cyls = dp->disksize / (64 * 32); 2076 } 2077 dp->rot_rate = 3600; 2078 return (SDGP_RESULT_OK); 2079 } 2080 2081 static int 2082 sd_flush(struct sd_softc *sd, int flags) 2083 { 2084 struct scsipi_periph *periph = sd->sc_periph; 2085 struct scsi_synchronize_cache_10 cmd; 2086 2087 /* 2088 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2089 * We issue with address 0 length 0, which should be 2090 * interpreted by the device as "all remaining blocks 2091 * starting at address 0". We ignore ILLEGAL REQUEST 2092 * in the event that the command is not supported by 2093 * the device, and poll for completion so that we know 2094 * that the cache has actually been flushed. 2095 * 2096 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2097 * command, as indicated by our quirks flags. 2098 * 2099 * XXX What about older devices? 2100 */ 2101 if (periph->periph_version < 2 || 2102 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2103 return (0); 2104 2105 sd->flags |= SDF_FLUSHING; 2106 memset(&cmd, 0, sizeof(cmd)); 2107 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2108 2109 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2110 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2111 } 2112 2113 static int 2114 sd_getcache(struct sd_softc *sd, int *bitsp) 2115 { 2116 struct scsipi_periph *periph = sd->sc_periph; 2117 struct sd_mode_sense_data scsipi_sense; 2118 int error, bits = 0; 2119 int big; 2120 union scsi_disk_pages *pages; 2121 2122 if (periph->periph_version < 2) 2123 return (EOPNOTSUPP); 2124 2125 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2126 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2127 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2128 if (error) 2129 return (error); 2130 2131 if (big) 2132 pages = (void *)(&scsipi_sense.header.big + 1); 2133 else 2134 pages = (void *)(&scsipi_sense.header.small + 1); 2135 2136 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2137 bits |= DKCACHE_READ; 2138 if (pages->caching_params.flags & CACHING_WCE) 2139 bits |= DKCACHE_WRITE; 2140 if (pages->caching_params.pg_code & PGCODE_PS) 2141 bits |= DKCACHE_SAVE; 2142 2143 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2144 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2145 sizeof(scsipi_sense.pages.caching_params), 2146 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2147 if (error == 0) { 2148 if (big) 2149 pages = (void *)(&scsipi_sense.header.big + 1); 2150 else 2151 pages = (void *)(&scsipi_sense.header.small + 1); 2152 2153 if (pages->caching_params.flags & CACHING_RCD) 2154 bits |= DKCACHE_RCHANGE; 2155 if (pages->caching_params.flags & CACHING_WCE) 2156 bits |= DKCACHE_WCHANGE; 2157 } 2158 2159 *bitsp = bits; 2160 2161 return (0); 2162 } 2163 2164 static int 2165 sd_setcache(struct sd_softc *sd, int bits) 2166 { 2167 struct scsipi_periph *periph = sd->sc_periph; 2168 struct sd_mode_sense_data scsipi_sense; 2169 int error; 2170 uint8_t oflags, byte2 = 0; 2171 int big; 2172 union scsi_disk_pages *pages; 2173 2174 if (periph->periph_version < 2) 2175 return (EOPNOTSUPP); 2176 2177 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2178 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2179 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2180 if (error) 2181 return (error); 2182 2183 if (big) 2184 pages = (void *)(&scsipi_sense.header.big + 1); 2185 else 2186 pages = (void *)(&scsipi_sense.header.small + 1); 2187 2188 oflags = pages->caching_params.flags; 2189 2190 if (bits & DKCACHE_READ) 2191 pages->caching_params.flags &= ~CACHING_RCD; 2192 else 2193 pages->caching_params.flags |= CACHING_RCD; 2194 2195 if (bits & DKCACHE_WRITE) 2196 pages->caching_params.flags |= CACHING_WCE; 2197 else 2198 pages->caching_params.flags &= ~CACHING_WCE; 2199 2200 if (oflags == pages->caching_params.flags) 2201 return (0); 2202 2203 pages->caching_params.pg_code &= PGCODE_MASK; 2204 2205 if (bits & DKCACHE_SAVE) 2206 byte2 |= SMS_SP; 2207 2208 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2209 sizeof(struct scsi_mode_page_header) + 2210 pages->caching_params.pg_length, 0, big)); 2211 } 2212
Indexes created Mon Sep 22 13:09:51 GMT 2025