1 /* $NetBSD: sd.c,v 1.267 2007/10/08 16:41:14 ad 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@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@dialix.oz.au) Sept 1992 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.267 2007/10/08 16:41:14 ad 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 #include <prop/proplib.h> 94 95 #define SDUNIT(dev) DISKUNIT(dev) 96 #define SDPART(dev) DISKPART(dev) 97 #define SDMINOR(unit, part) DISKMINOR(unit, part) 98 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 99 100 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 101 102 #define SD_DEFAULT_BLKSIZE 512 103 104 static void sdminphys(struct buf *); 105 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 106 static int sdgetdisklabel(struct sd_softc *); 107 static void sdstart(struct scsipi_periph *); 108 static void sdrestart(void *); 109 static void sddone(struct scsipi_xfer *, int); 110 static void sd_shutdown(void *); 111 static int sd_interpret_sense(struct scsipi_xfer *); 112 113 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 114 int, int *); 115 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 116 int); 117 static int sd_validate_blksize(struct scsipi_periph *, int); 118 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 119 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 120 int); 121 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 122 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 123 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 124 int); 125 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 126 int); 127 128 static int sd_flush(struct sd_softc *, int); 129 static int sd_getcache(struct sd_softc *, int *); 130 static int sd_setcache(struct sd_softc *, int); 131 132 static int sdmatch(struct device *, struct cfdata *, void *); 133 static void sdattach(struct device *, struct device *, void *); 134 static int sdactivate(struct device *, enum devact); 135 static int sddetach(struct device *, int); 136 static void sd_set_properties(struct sd_softc *); 137 138 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 139 sdactivate); 140 141 extern struct cfdriver sd_cd; 142 143 static const struct scsipi_inquiry_pattern sd_patterns[] = { 144 {T_DIRECT, T_FIXED, 145 "", "", ""}, 146 {T_DIRECT, T_REMOV, 147 "", "", ""}, 148 {T_OPTICAL, T_FIXED, 149 "", "", ""}, 150 {T_OPTICAL, T_REMOV, 151 "", "", ""}, 152 {T_SIMPLE_DIRECT, T_FIXED, 153 "", "", ""}, 154 {T_SIMPLE_DIRECT, T_REMOV, 155 "", "", ""}, 156 }; 157 158 static dev_type_open(sdopen); 159 static dev_type_close(sdclose); 160 static dev_type_read(sdread); 161 static dev_type_write(sdwrite); 162 static dev_type_ioctl(sdioctl); 163 static dev_type_strategy(sdstrategy); 164 static dev_type_dump(sddump); 165 static dev_type_size(sdsize); 166 167 const struct bdevsw sd_bdevsw = { 168 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 169 }; 170 171 const struct cdevsw sd_cdevsw = { 172 sdopen, sdclose, sdread, sdwrite, sdioctl, 173 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 174 }; 175 176 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 177 178 static const struct scsipi_periphsw sd_switch = { 179 sd_interpret_sense, /* check our error handler first */ 180 sdstart, /* have a queue, served by this */ 181 NULL, /* have no async handler */ 182 sddone, /* deal with stats at interrupt time */ 183 }; 184 185 struct sd_mode_sense_data { 186 /* 187 * XXX 188 * We are not going to parse this as-is -- it just has to be large 189 * enough. 190 */ 191 union { 192 struct scsi_mode_parameter_header_6 small; 193 struct scsi_mode_parameter_header_10 big; 194 } header; 195 struct scsi_general_block_descriptor blk_desc; 196 union scsi_disk_pages pages; 197 }; 198 199 /* 200 * The routine called by the low level scsi routine when it discovers 201 * A device suitable for this driver 202 */ 203 static int 204 sdmatch(struct device *parent, struct cfdata *match, 205 void *aux) 206 { 207 struct scsipibus_attach_args *sa = aux; 208 int priority; 209 210 (void)scsipi_inqmatch(&sa->sa_inqbuf, 211 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 212 sizeof(sd_patterns[0]), &priority); 213 214 return (priority); 215 } 216 217 /* 218 * Attach routine common to atapi & scsi. 219 */ 220 static void 221 sdattach(struct device *parent, struct device *self, void *aux) 222 { 223 struct sd_softc *sd = device_private(self); 224 struct scsipibus_attach_args *sa = aux; 225 struct scsipi_periph *periph = sa->sa_periph; 226 int error, result; 227 struct disk_parms *dp = &sd->params; 228 char pbuf[9]; 229 230 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 231 232 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 233 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 234 if (sd->type == T_SIMPLE_DIRECT) 235 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 236 237 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 238 periph->periph_version == 0) 239 sd->flags |= SDF_ANCIENT; 240 241 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 242 243 callout_init(&sd->sc_callout, 0); 244 245 /* 246 * Store information needed to contact our base driver 247 */ 248 sd->sc_periph = periph; 249 250 periph->periph_dev = &sd->sc_dev; 251 periph->periph_switch = &sd_switch; 252 253 /* 254 * Increase our openings to the maximum-per-periph 255 * supported by the adapter. This will either be 256 * clamped down or grown by the adapter if necessary. 257 */ 258 periph->periph_openings = 259 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 260 periph->periph_flags |= PERIPH_GROW_OPENINGS; 261 262 /* 263 * Initialize and attach the disk structure. 264 */ 265 disk_init(&sd->sc_dk, sd->sc_dev.dv_xname, &sddkdriver); 266 disk_attach(&sd->sc_dk); 267 268 /* 269 * Use the subdriver to request information regarding the drive. 270 */ 271 aprint_naive("\n"); 272 aprint_normal("\n"); 273 274 error = scsipi_test_unit_ready(periph, 275 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 276 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 277 278 if (error) 279 result = SDGP_RESULT_OFFLINE; 280 else 281 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 282 aprint_normal("%s: ", sd->sc_dev.dv_xname); 283 switch (result) { 284 case SDGP_RESULT_OK: 285 format_bytes(pbuf, sizeof(pbuf), 286 (u_int64_t)dp->disksize * dp->blksize); 287 aprint_normal( 288 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 289 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 290 (unsigned long long)dp->disksize); 291 break; 292 293 case SDGP_RESULT_OFFLINE: 294 aprint_normal("drive offline"); 295 break; 296 297 case SDGP_RESULT_UNFORMATTED: 298 aprint_normal("unformatted media"); 299 break; 300 301 #ifdef DIAGNOSTIC 302 default: 303 panic("sdattach: unknown result from get_parms"); 304 break; 305 #endif 306 } 307 aprint_normal("\n"); 308 309 /* 310 * Establish a shutdown hook so that we can ensure that 311 * our data has actually made it onto the platter at 312 * shutdown time. Note that this relies on the fact 313 * that the shutdown hook code puts us at the head of 314 * the list (thus guaranteeing that our hook runs before 315 * our ancestors'). 316 */ 317 if ((sd->sc_sdhook = 318 shutdownhook_establish(sd_shutdown, sd)) == NULL) 319 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 320 sd->sc_dev.dv_xname); 321 322 #if NRND > 0 323 /* 324 * attach the device into the random source list 325 */ 326 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 327 RND_TYPE_DISK, 0); 328 #endif 329 330 /* Discover wedges on this disk. */ 331 dkwedge_discover(&sd->sc_dk); 332 333 sd_set_properties(sd); 334 } 335 336 static int 337 sdactivate(struct device *self, enum devact act) 338 { 339 int rv = 0; 340 341 switch (act) { 342 case DVACT_ACTIVATE: 343 rv = EOPNOTSUPP; 344 break; 345 346 case DVACT_DEACTIVATE: 347 /* 348 * Nothing to do; we key off the device's DVF_ACTIVE. 349 */ 350 break; 351 } 352 return (rv); 353 } 354 355 static int 356 sddetach(struct device *self, int flags) 357 { 358 struct sd_softc *sd = device_private(self); 359 int s, bmaj, cmaj, i, mn; 360 361 /* locate the major number */ 362 bmaj = bdevsw_lookup_major(&sd_bdevsw); 363 cmaj = cdevsw_lookup_major(&sd_cdevsw); 364 365 /* Nuke the vnodes for any open instances */ 366 for (i = 0; i < MAXPARTITIONS; i++) { 367 mn = SDMINOR(device_unit(self), i); 368 vdevgone(bmaj, mn, mn, VBLK); 369 vdevgone(cmaj, mn, mn, VCHR); 370 } 371 372 /* kill any pending restart */ 373 callout_stop(&sd->sc_callout); 374 375 /* Delete all of our wedges. */ 376 dkwedge_delall(&sd->sc_dk); 377 378 s = splbio(); 379 380 /* Kill off any queued buffers. */ 381 bufq_drain(sd->buf_queue); 382 383 bufq_free(sd->buf_queue); 384 385 /* Kill off any pending commands. */ 386 scsipi_kill_pending(sd->sc_periph); 387 388 splx(s); 389 390 /* Detach from the disk list. */ 391 disk_detach(&sd->sc_dk); 392 disk_destroy(&sd->sc_dk); 393 394 /* Get rid of the shutdown hook. */ 395 shutdownhook_disestablish(sd->sc_sdhook); 396 397 #if NRND > 0 398 /* Unhook the entropy source. */ 399 rnd_detach_source(&sd->rnd_source); 400 #endif 401 402 return (0); 403 } 404 405 /* 406 * open the device. Make sure the partition info is a up-to-date as can be. 407 */ 408 static int 409 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 410 { 411 struct sd_softc *sd; 412 struct scsipi_periph *periph; 413 struct scsipi_adapter *adapt; 414 int unit, part; 415 int error; 416 417 unit = SDUNIT(dev); 418 if (unit >= sd_cd.cd_ndevs) 419 return (ENXIO); 420 sd = sd_cd.cd_devs[unit]; 421 if (sd == NULL) 422 return (ENXIO); 423 424 if (!device_is_active(&sd->sc_dev)) 425 return (ENODEV); 426 427 part = SDPART(dev); 428 429 mutex_enter(&sd->sc_dk.dk_openlock); 430 431 /* 432 * If there are wedges, and this is not RAW_PART, then we 433 * need to fail. 434 */ 435 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 436 error = EBUSY; 437 goto bad1; 438 } 439 440 periph = sd->sc_periph; 441 adapt = periph->periph_channel->chan_adapter; 442 443 SC_DEBUG(periph, SCSIPI_DB1, 444 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 445 sd_cd.cd_ndevs, part)); 446 447 /* 448 * If this is the first open of this device, add a reference 449 * to the adapter. 450 */ 451 if (sd->sc_dk.dk_openmask == 0 && 452 (error = scsipi_adapter_addref(adapt)) != 0) 453 goto bad1; 454 455 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 456 /* 457 * If any partition is open, but the disk has been invalidated, 458 * disallow further opens of non-raw partition 459 */ 460 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 461 (part != RAW_PART || fmt != S_IFCHR)) { 462 error = EIO; 463 goto bad2; 464 } 465 } else { 466 int silent; 467 468 if (part == RAW_PART && fmt == S_IFCHR) 469 silent = XS_CTL_SILENT; 470 else 471 silent = 0; 472 473 /* Check that it is still responding and ok. */ 474 error = scsipi_test_unit_ready(periph, 475 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 476 silent); 477 478 /* 479 * Start the pack spinning if necessary. Always allow the 480 * raw parition to be opened, for raw IOCTLs. Data transfers 481 * will check for SDEV_MEDIA_LOADED. 482 */ 483 if (error == EIO) { 484 int error2; 485 486 error2 = scsipi_start(periph, SSS_START, silent); 487 switch (error2) { 488 case 0: 489 error = 0; 490 break; 491 case EIO: 492 case EINVAL: 493 break; 494 default: 495 error = error2; 496 break; 497 } 498 } 499 if (error) { 500 if (silent) 501 goto out; 502 goto bad2; 503 } 504 505 periph->periph_flags |= PERIPH_OPEN; 506 507 if (periph->periph_flags & PERIPH_REMOVABLE) { 508 /* Lock the pack in. */ 509 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 510 XS_CTL_IGNORE_ILLEGAL_REQUEST | 511 XS_CTL_IGNORE_MEDIA_CHANGE | 512 XS_CTL_SILENT); 513 if (error) 514 goto bad3; 515 } 516 517 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 518 int param_error; 519 periph->periph_flags |= PERIPH_MEDIA_LOADED; 520 521 /* 522 * Load the physical device parameters. 523 * 524 * Note that if media is present but unformatted, 525 * we allow the open (so that it can be formatted!). 526 * The drive should refuse real I/O, if the media is 527 * unformatted. 528 */ 529 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 530 == SDGP_RESULT_OFFLINE) { 531 error = ENXIO; 532 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 533 goto bad3; 534 } 535 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 536 537 /* Load the partition info if not already loaded. */ 538 if (param_error == 0) { 539 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 540 error = EIO; 541 goto bad3; 542 } 543 SC_DEBUG(periph, SCSIPI_DB3, 544 ("Disklabel loaded ")); 545 } 546 } 547 } 548 549 /* Check that the partition exists. */ 550 if (part != RAW_PART && 551 (part >= sd->sc_dk.dk_label->d_npartitions || 552 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 553 error = ENXIO; 554 goto bad3; 555 } 556 557 out: /* Insure only one open at a time. */ 558 switch (fmt) { 559 case S_IFCHR: 560 sd->sc_dk.dk_copenmask |= (1 << part); 561 break; 562 case S_IFBLK: 563 sd->sc_dk.dk_bopenmask |= (1 << part); 564 break; 565 } 566 sd->sc_dk.dk_openmask = 567 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 568 569 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 570 mutex_exit(&sd->sc_dk.dk_openlock); 571 return (0); 572 573 bad3: 574 if (sd->sc_dk.dk_openmask == 0) { 575 if (periph->periph_flags & PERIPH_REMOVABLE) 576 scsipi_prevent(periph, SPAMR_ALLOW, 577 XS_CTL_IGNORE_ILLEGAL_REQUEST | 578 XS_CTL_IGNORE_MEDIA_CHANGE | 579 XS_CTL_SILENT); 580 periph->periph_flags &= ~PERIPH_OPEN; 581 } 582 583 bad2: 584 if (sd->sc_dk.dk_openmask == 0) 585 scsipi_adapter_delref(adapt); 586 587 bad1: 588 mutex_exit(&sd->sc_dk.dk_openlock); 589 return (error); 590 } 591 592 /* 593 * close the device.. only called if we are the LAST occurence of an open 594 * device. Convenient now but usually a pain. 595 */ 596 static int 597 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 598 { 599 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 600 struct scsipi_periph *periph = sd->sc_periph; 601 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 602 int part = SDPART(dev); 603 604 mutex_enter(&sd->sc_dk.dk_openlock); 605 switch (fmt) { 606 case S_IFCHR: 607 sd->sc_dk.dk_copenmask &= ~(1 << part); 608 break; 609 case S_IFBLK: 610 sd->sc_dk.dk_bopenmask &= ~(1 << part); 611 break; 612 } 613 sd->sc_dk.dk_openmask = 614 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 615 616 if (sd->sc_dk.dk_openmask == 0) { 617 /* 618 * If the disk cache needs flushing, and the disk supports 619 * it, do it now. 620 */ 621 if ((sd->flags & SDF_DIRTY) != 0) { 622 if (sd_flush(sd, 0)) { 623 printf("%s: cache synchronization failed\n", 624 sd->sc_dev.dv_xname); 625 sd->flags &= ~SDF_FLUSHING; 626 } else 627 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 628 } 629 630 scsipi_wait_drain(periph); 631 632 if (periph->periph_flags & PERIPH_REMOVABLE) 633 scsipi_prevent(periph, SPAMR_ALLOW, 634 XS_CTL_IGNORE_ILLEGAL_REQUEST | 635 XS_CTL_IGNORE_NOT_READY | 636 XS_CTL_SILENT); 637 periph->periph_flags &= ~PERIPH_OPEN; 638 639 scsipi_wait_drain(periph); 640 641 scsipi_adapter_delref(adapt); 642 } 643 644 mutex_exit(&sd->sc_dk.dk_openlock); 645 return (0); 646 } 647 648 /* 649 * Actually translate the requested transfer into one the physical driver 650 * can understand. The transfer is described by a buf and will include 651 * only one physical transfer. 652 */ 653 static void 654 sdstrategy(struct buf *bp) 655 { 656 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 657 struct scsipi_periph *periph = sd->sc_periph; 658 struct disklabel *lp; 659 daddr_t blkno; 660 int s; 661 bool sector_aligned; 662 663 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 664 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 665 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 666 /* 667 * If the device has been made invalid, error out 668 */ 669 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 670 !device_is_active(&sd->sc_dev)) { 671 if (periph->periph_flags & PERIPH_OPEN) 672 bp->b_error = EIO; 673 else 674 bp->b_error = ENODEV; 675 goto done; 676 } 677 678 lp = sd->sc_dk.dk_label; 679 680 /* 681 * The transfer must be a whole number of blocks, offset must not be 682 * negative. 683 */ 684 if (lp->d_secsize == DEV_BSIZE) { 685 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 686 } else { 687 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 688 } 689 if (!sector_aligned || bp->b_blkno < 0) { 690 bp->b_error = EINVAL; 691 goto done; 692 } 693 /* 694 * If it's a null transfer, return immediatly 695 */ 696 if (bp->b_bcount == 0) 697 goto done; 698 699 /* 700 * Do bounds checking, adjust transfer. if error, process. 701 * If end of partition, just return. 702 */ 703 if (SDPART(bp->b_dev) == RAW_PART) { 704 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 705 sd->params.disksize512) <= 0) 706 goto done; 707 } else { 708 if (bounds_check_with_label(&sd->sc_dk, bp, 709 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 710 goto done; 711 } 712 713 /* 714 * Now convert the block number to absolute and put it in 715 * terms of the device's logical block size. 716 */ 717 if (lp->d_secsize == DEV_BSIZE) 718 blkno = bp->b_blkno; 719 else if (lp->d_secsize > DEV_BSIZE) 720 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 721 else 722 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 723 724 if (SDPART(bp->b_dev) != RAW_PART) 725 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 726 727 bp->b_rawblkno = blkno; 728 729 s = splbio(); 730 731 /* 732 * Place it in the queue of disk activities for this disk. 733 * 734 * XXX Only do disksort() if the current operating mode does not 735 * XXX include tagged queueing. 736 */ 737 BUFQ_PUT(sd->buf_queue, bp); 738 739 /* 740 * Tell the device to get going on the transfer if it's 741 * not doing anything, otherwise just wait for completion 742 */ 743 sdstart(sd->sc_periph); 744 745 splx(s); 746 return; 747 748 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((void *)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_resid = bp->b_bcount; 811 biodone(bp); 812 continue; 813 } else { 814 return; 815 } 816 } 817 818 /* 819 * See if there is a buf with work for us to do.. 820 */ 821 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 822 return; 823 824 /* 825 * We have a buf, now we should make a command. 826 */ 827 828 if (lp->d_secsize == DEV_BSIZE) 829 nblks = bp->b_bcount >> DEV_BSHIFT; 830 else 831 nblks = howmany(bp->b_bcount, lp->d_secsize); 832 833 /* 834 * Fill out the scsi command. Use the smallest CDB possible 835 * (6-byte, 10-byte, or 16-byte). 836 */ 837 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 838 ((nblks & 0xff) == nblks) && 839 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 840 /* 6-byte CDB */ 841 memset(&cmd_small, 0, sizeof(cmd_small)); 842 cmd_small.opcode = (bp->b_flags & B_READ) ? 843 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 844 _lto3b(bp->b_rawblkno, cmd_small.addr); 845 cmd_small.length = nblks & 0xff; 846 cmdlen = sizeof(cmd_small); 847 cmdp = (struct scsipi_generic *)&cmd_small; 848 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 849 /* 10-byte CDB */ 850 memset(&cmd_big, 0, sizeof(cmd_big)); 851 cmd_big.opcode = (bp->b_flags & B_READ) ? 852 READ_10 : WRITE_10; 853 _lto4b(bp->b_rawblkno, cmd_big.addr); 854 _lto2b(nblks, cmd_big.length); 855 cmdlen = sizeof(cmd_big); 856 cmdp = (struct scsipi_generic *)&cmd_big; 857 } else { 858 /* 16-byte CDB */ 859 memset(&cmd16, 0, sizeof(cmd16)); 860 cmd16.opcode = (bp->b_flags & B_READ) ? 861 READ_16 : WRITE_16; 862 _lto8b(bp->b_rawblkno, cmd16.addr); 863 _lto4b(nblks, cmd16.length); 864 cmdlen = sizeof(cmd16); 865 cmdp = (struct scsipi_generic *)&cmd16; 866 } 867 868 /* Instrumentation. */ 869 disk_busy(&sd->sc_dk); 870 871 /* 872 * Mark the disk dirty so that the cache will be 873 * flushed on close. 874 */ 875 if ((bp->b_flags & B_READ) == 0) 876 sd->flags |= SDF_DIRTY; 877 878 /* 879 * Figure out what flags to use. 880 */ 881 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 882 if (bp->b_flags & B_READ) 883 flags |= XS_CTL_DATA_IN; 884 else 885 flags |= XS_CTL_DATA_OUT; 886 887 /* 888 * Call the routine that chats with the adapter. 889 * Note: we cannot sleep as we may be an interrupt 890 */ 891 xs = scsipi_make_xs(periph, cmdp, cmdlen, 892 (u_char *)bp->b_data, bp->b_bcount, 893 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 894 if (__predict_false(xs == NULL)) { 895 /* 896 * out of memory. Keep this buffer in the queue, and 897 * retry later. 898 */ 899 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 900 periph); 901 return; 902 } 903 /* 904 * need to dequeue the buffer before queuing the command, 905 * because cdstart may be called recursively from the 906 * HBA driver 907 */ 908 #ifdef DIAGNOSTIC 909 if (BUFQ_GET(sd->buf_queue) != bp) 910 panic("sdstart(): dequeued wrong buf"); 911 #else 912 BUFQ_GET(sd->buf_queue); 913 #endif 914 error = scsipi_execute_xs(xs); 915 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 916 KASSERT(error == 0); 917 } 918 } 919 920 static void 921 sdrestart(void *v) 922 { 923 int s = splbio(); 924 sdstart((struct scsipi_periph *)v); 925 splx(s); 926 } 927 928 static void 929 sddone(struct scsipi_xfer *xs, int error) 930 { 931 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 932 struct buf *bp = xs->bp; 933 934 if (sd->flags & SDF_FLUSHING) { 935 /* Flush completed, no longer dirty. */ 936 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 937 } 938 939 if (bp) { 940 bp->b_error = error; 941 bp->b_resid = xs->resid; 942 if (error) { 943 /* on a read/write error bp->b_resid is zero, so fix */ 944 bp->b_resid = bp->b_bcount; 945 } 946 947 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 948 (bp->b_flags & B_READ)); 949 #if NRND > 0 950 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 951 #endif 952 953 biodone(bp); 954 } 955 } 956 957 static void 958 sdminphys(struct buf *bp) 959 { 960 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 961 long xmax; 962 963 /* 964 * If the device is ancient, we want to make sure that 965 * the transfer fits into a 6-byte cdb. 966 * 967 * XXX Note that the SCSI-I spec says that 256-block transfers 968 * are allowed in a 6-byte read/write, and are specified 969 * by settng the "length" to 0. However, we're conservative 970 * here, allowing only 255-block transfers in case an 971 * ancient device gets confused by length == 0. A length of 0 972 * in a 10-byte read/write actually means 0 blocks. 973 */ 974 if ((sd->flags & SDF_ANCIENT) && 975 ((sd->sc_periph->periph_flags & 976 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 977 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 978 979 if (bp->b_bcount > xmax) 980 bp->b_bcount = xmax; 981 } 982 983 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 984 } 985 986 static int 987 sdread(dev_t dev, struct uio *uio, int ioflag) 988 { 989 990 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 991 } 992 993 static int 994 sdwrite(dev_t dev, struct uio *uio, int ioflag) 995 { 996 997 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 998 } 999 1000 /* 1001 * Perform special action on behalf of the user 1002 * Knows about the internals of this device 1003 */ 1004 static int 1005 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1006 { 1007 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1008 struct scsipi_periph *periph = sd->sc_periph; 1009 int part = SDPART(dev); 1010 int error = 0; 1011 #ifdef __HAVE_OLD_DISKLABEL 1012 struct disklabel *newlabel = NULL; 1013 #endif 1014 1015 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1016 1017 /* 1018 * If the device is not valid, some IOCTLs can still be 1019 * handled on the raw partition. Check this here. 1020 */ 1021 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1022 switch (cmd) { 1023 case DIOCKLABEL: 1024 case DIOCWLABEL: 1025 case DIOCLOCK: 1026 case DIOCEJECT: 1027 case ODIOCEJECT: 1028 case DIOCGCACHE: 1029 case DIOCSCACHE: 1030 case SCIOCIDENTIFY: 1031 case OSCIOCIDENTIFY: 1032 case SCIOCCOMMAND: 1033 case SCIOCDEBUG: 1034 if (part == RAW_PART) 1035 break; 1036 /* FALLTHROUGH */ 1037 default: 1038 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1039 return (ENODEV); 1040 else 1041 return (EIO); 1042 } 1043 } 1044 1045 switch (cmd) { 1046 case DIOCGDINFO: 1047 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1048 return (0); 1049 1050 #ifdef __HAVE_OLD_DISKLABEL 1051 case ODIOCGDINFO: 1052 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1053 if (newlabel == NULL) 1054 return EIO; 1055 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1056 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1057 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1058 else 1059 error = ENOTTY; 1060 free(newlabel, M_TEMP); 1061 return error; 1062 #endif 1063 1064 case DIOCGPART: 1065 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1066 ((struct partinfo *)addr)->part = 1067 &sd->sc_dk.dk_label->d_partitions[part]; 1068 return (0); 1069 1070 case DIOCWDINFO: 1071 case DIOCSDINFO: 1072 #ifdef __HAVE_OLD_DISKLABEL 1073 case ODIOCWDINFO: 1074 case ODIOCSDINFO: 1075 #endif 1076 { 1077 struct disklabel *lp; 1078 1079 if ((flag & FWRITE) == 0) 1080 return (EBADF); 1081 1082 #ifdef __HAVE_OLD_DISKLABEL 1083 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1084 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1085 if (newlabel == NULL) 1086 return EIO; 1087 memset(newlabel, 0, sizeof newlabel); 1088 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1089 lp = newlabel; 1090 } else 1091 #endif 1092 lp = (struct disklabel *)addr; 1093 1094 mutex_enter(&sd->sc_dk.dk_openlock); 1095 sd->flags |= SDF_LABELLING; 1096 1097 error = setdisklabel(sd->sc_dk.dk_label, 1098 lp, /*sd->sc_dk.dk_openmask : */0, 1099 sd->sc_dk.dk_cpulabel); 1100 if (error == 0) { 1101 if (cmd == DIOCWDINFO 1102 #ifdef __HAVE_OLD_DISKLABEL 1103 || cmd == ODIOCWDINFO 1104 #endif 1105 ) 1106 error = writedisklabel(SDLABELDEV(dev), 1107 sdstrategy, sd->sc_dk.dk_label, 1108 sd->sc_dk.dk_cpulabel); 1109 } 1110 1111 sd->flags &= ~SDF_LABELLING; 1112 mutex_exit(&sd->sc_dk.dk_openlock); 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, sd->name, 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 = lp->d_secperunit; 1288 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1289 lp->d_npartitions = RAW_PART + 1; 1290 1291 lp->d_magic = DISKMAGIC; 1292 lp->d_magic2 = DISKMAGIC; 1293 lp->d_checksum = dkcksum(lp); 1294 } 1295 1296 1297 /* 1298 * Load the label information on the named device 1299 */ 1300 static int 1301 sdgetdisklabel(struct sd_softc *sd) 1302 { 1303 struct disklabel *lp = sd->sc_dk.dk_label; 1304 const char *errstring; 1305 1306 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1307 1308 sdgetdefaultlabel(sd, lp); 1309 1310 if (lp->d_secpercyl == 0) { 1311 lp->d_secpercyl = 100; 1312 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1313 } 1314 1315 /* 1316 * Call the generic disklabel extraction routine 1317 */ 1318 errstring = readdisklabel(MAKESDDEV(0, device_unit(&sd->sc_dev), 1319 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1320 if (errstring) { 1321 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1322 return EIO; 1323 } 1324 return 0; 1325 } 1326 1327 static void 1328 sd_shutdown(void *arg) 1329 { 1330 struct sd_softc *sd = arg; 1331 1332 /* 1333 * If the disk cache needs to be flushed, and the disk supports 1334 * it, flush it. We're cold at this point, so we poll for 1335 * completion. 1336 */ 1337 if ((sd->flags & SDF_DIRTY) != 0) { 1338 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1339 printf("%s: cache synchronization failed\n", 1340 sd->sc_dev.dv_xname); 1341 sd->flags &= ~SDF_FLUSHING; 1342 } else 1343 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1344 } 1345 } 1346 1347 /* 1348 * Check Errors 1349 */ 1350 static int 1351 sd_interpret_sense(struct scsipi_xfer *xs) 1352 { 1353 struct scsipi_periph *periph = xs->xs_periph; 1354 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1355 struct sd_softc *sd = (void *)periph->periph_dev; 1356 int s, error, retval = EJUSTRETURN; 1357 1358 /* 1359 * If the periph is already recovering, just do the normal 1360 * error processing. 1361 */ 1362 if (periph->periph_flags & PERIPH_RECOVERING) 1363 return (retval); 1364 1365 /* 1366 * Ignore errors from accessing illegal fields (e.g. trying to 1367 * lock the door of a digicam, which doesn't have a door that 1368 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1369 */ 1370 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1371 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1372 sense->asc == 0x24 && 1373 sense->ascq == 0x00) { /* Illegal field in CDB */ 1374 if (!(xs->xs_control & XS_CTL_SILENT)) { 1375 scsipi_printaddr(periph); 1376 printf("no door lock\n"); 1377 } 1378 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1379 return (retval); 1380 } 1381 1382 1383 1384 /* 1385 * If the device is not open yet, let the generic code handle it. 1386 */ 1387 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1388 return (retval); 1389 1390 /* 1391 * If it isn't a extended or extended/deferred error, let 1392 * the generic code handle it. 1393 */ 1394 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1395 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1396 return (retval); 1397 1398 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1399 sense->asc == 0x4) { 1400 if (sense->ascq == 0x01) { 1401 /* 1402 * Unit In The Process Of Becoming Ready. 1403 */ 1404 printf("%s: waiting for pack to spin up...\n", 1405 sd->sc_dev.dv_xname); 1406 if (!callout_pending(&periph->periph_callout)) 1407 scsipi_periph_freeze(periph, 1); 1408 callout_reset(&periph->periph_callout, 1409 5 * hz, scsipi_periph_timed_thaw, periph); 1410 retval = ERESTART; 1411 } else if (sense->ascq == 0x02) { 1412 printf("%s: pack is stopped, restarting...\n", 1413 sd->sc_dev.dv_xname); 1414 s = splbio(); 1415 periph->periph_flags |= PERIPH_RECOVERING; 1416 splx(s); 1417 error = scsipi_start(periph, SSS_START, 1418 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1419 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1420 if (error) { 1421 printf("%s: unable to restart pack\n", 1422 sd->sc_dev.dv_xname); 1423 retval = error; 1424 } else 1425 retval = ERESTART; 1426 s = splbio(); 1427 periph->periph_flags &= ~PERIPH_RECOVERING; 1428 splx(s); 1429 } 1430 } 1431 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1432 sense->asc == 0x31 && 1433 sense->ascq == 0x00) { /* maybe for any asq ? */ 1434 /* Medium Format Corrupted */ 1435 retval = EFTYPE; 1436 } 1437 return (retval); 1438 } 1439 1440 1441 static int 1442 sdsize(dev_t dev) 1443 { 1444 struct sd_softc *sd; 1445 int part, unit, omask; 1446 int size; 1447 1448 unit = SDUNIT(dev); 1449 if (unit >= sd_cd.cd_ndevs) 1450 return (-1); 1451 sd = sd_cd.cd_devs[unit]; 1452 if (sd == NULL) 1453 return (-1); 1454 1455 if (!device_is_active(&sd->sc_dev)) 1456 return (-1); 1457 1458 part = SDPART(dev); 1459 omask = sd->sc_dk.dk_openmask & (1 << part); 1460 1461 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1462 return (-1); 1463 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1464 size = -1; 1465 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1466 size = -1; 1467 else 1468 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1469 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1470 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1471 return (-1); 1472 return (size); 1473 } 1474 1475 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1476 static struct scsipi_xfer sx; 1477 static int sddoingadump; 1478 1479 /* 1480 * dump all of physical memory into the partition specified, starting 1481 * at offset 'dumplo' into the partition. 1482 */ 1483 static int 1484 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1485 { 1486 struct sd_softc *sd; /* disk unit to do the I/O */ 1487 struct disklabel *lp; /* disk's disklabel */ 1488 int unit, part; 1489 int sectorsize; /* size of a disk sector */ 1490 int nsects; /* number of sectors in partition */ 1491 int sectoff; /* sector offset of partition */ 1492 int totwrt; /* total number of sectors left to write */ 1493 int nwrt; /* current number of sectors to write */ 1494 struct scsipi_rw_10 cmd; /* write command */ 1495 struct scsipi_xfer *xs; /* ... convenience */ 1496 struct scsipi_periph *periph; 1497 struct scsipi_channel *chan; 1498 1499 /* Check if recursive dump; if so, punt. */ 1500 if (sddoingadump) 1501 return (EFAULT); 1502 1503 /* Mark as active early. */ 1504 sddoingadump = 1; 1505 1506 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1507 part = SDPART(dev); 1508 1509 /* Check for acceptable drive number. */ 1510 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1511 return (ENXIO); 1512 1513 if (!device_is_active(&sd->sc_dev)) 1514 return (ENODEV); 1515 1516 periph = sd->sc_periph; 1517 chan = periph->periph_channel; 1518 1519 /* Make sure it was initialized. */ 1520 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1521 return (ENXIO); 1522 1523 /* Convert to disk sectors. Request must be a multiple of size. */ 1524 lp = sd->sc_dk.dk_label; 1525 sectorsize = lp->d_secsize; 1526 if ((size % sectorsize) != 0) 1527 return (EFAULT); 1528 totwrt = size / sectorsize; 1529 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1530 1531 nsects = lp->d_partitions[part].p_size; 1532 sectoff = lp->d_partitions[part].p_offset; 1533 1534 /* Check transfer bounds against partition size. */ 1535 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1536 return (EINVAL); 1537 1538 /* Offset block number to start of partition. */ 1539 blkno += sectoff; 1540 1541 xs = &sx; 1542 1543 while (totwrt > 0) { 1544 nwrt = totwrt; /* XXX */ 1545 #ifndef SD_DUMP_NOT_TRUSTED 1546 /* 1547 * Fill out the scsi command 1548 */ 1549 memset(&cmd, 0, sizeof(cmd)); 1550 cmd.opcode = WRITE_10; 1551 _lto4b(blkno, cmd.addr); 1552 _lto2b(nwrt, cmd.length); 1553 /* 1554 * Fill out the scsipi_xfer structure 1555 * Note: we cannot sleep as we may be an interrupt 1556 * don't use scsipi_command() as it may want to wait 1557 * for an xs. 1558 */ 1559 memset(xs, 0, sizeof(sx)); 1560 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1561 XS_CTL_DATA_OUT; 1562 xs->xs_status = 0; 1563 xs->xs_periph = periph; 1564 xs->xs_retries = SDRETRIES; 1565 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1566 xs->cmd = (struct scsipi_generic *)&cmd; 1567 xs->cmdlen = sizeof(cmd); 1568 xs->resid = nwrt * sectorsize; 1569 xs->error = XS_NOERROR; 1570 xs->bp = 0; 1571 xs->data = va; 1572 xs->datalen = nwrt * sectorsize; 1573 callout_init(&xs->xs_callout, 0); 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 = (char *)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 /* 1639 * sd_validate_blksize: 1640 * 1641 * Validate the block size. Print error if periph is specified, 1642 */ 1643 static int 1644 sd_validate_blksize(struct scsipi_periph *periph, int len) 1645 { 1646 1647 switch (len) { 1648 case 256: 1649 case 512: 1650 case 1024: 1651 case 2048: 1652 case 4096: 1653 return 1; 1654 } 1655 1656 if (periph) { 1657 scsipi_printaddr(periph); 1658 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1659 (len ^ (1 << (ffs(len) - 1))) ? 1660 "preposterous" : "unsupported", 1661 len, SD_DEFAULT_BLKSIZE); 1662 } 1663 1664 return 0; 1665 } 1666 1667 /* 1668 * sd_read_capacity: 1669 * 1670 * Find out from the device what its capacity is. 1671 */ 1672 static u_int64_t 1673 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1674 { 1675 union { 1676 struct scsipi_read_capacity_10 cmd; 1677 struct scsipi_read_capacity_16 cmd16; 1678 } cmd; 1679 union { 1680 struct scsipi_read_capacity_10_data data; 1681 struct scsipi_read_capacity_16_data data16; 1682 } *datap; 1683 uint64_t rv; 1684 1685 memset(&cmd, 0, sizeof(cmd)); 1686 cmd.cmd.opcode = READ_CAPACITY_10; 1687 1688 /* 1689 * Don't allocate data buffer on stack; 1690 * The lower driver layer might use the same stack and 1691 * if it uses region which is in the same cacheline, 1692 * cache flush ops against the data buffer won't work properly. 1693 */ 1694 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1695 if (datap == NULL) 1696 return 0; 1697 1698 /* 1699 * If the command works, interpret the result as a 4 byte 1700 * number of blocks 1701 */ 1702 rv = 0; 1703 memset(datap, 0, sizeof(datap->data)); 1704 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1705 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1706 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1707 goto out; 1708 1709 if (_4btol(datap->data.addr) != 0xffffffff) { 1710 *blksize = _4btol(datap->data.length); 1711 rv = _4btol(datap->data.addr) + 1; 1712 goto out; 1713 } 1714 1715 /* 1716 * Device is larger than can be reflected by READ CAPACITY (10). 1717 * Try READ CAPACITY (16). 1718 */ 1719 1720 memset(&cmd, 0, sizeof(cmd)); 1721 cmd.cmd16.opcode = READ_CAPACITY_16; 1722 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1723 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1724 1725 memset(datap, 0, sizeof(datap->data16)); 1726 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1727 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1728 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1729 goto out; 1730 1731 *blksize = _4btol(datap->data16.length); 1732 rv = _8btol(datap->data16.addr) + 1; 1733 1734 out: 1735 free(datap, M_TEMP); 1736 return rv; 1737 } 1738 1739 static int 1740 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1741 { 1742 struct { 1743 struct scsi_mode_parameter_header_6 header; 1744 /* no block descriptor */ 1745 u_int8_t pg_code; /* page code (should be 6) */ 1746 u_int8_t pg_length; /* page length (should be 11) */ 1747 u_int8_t wcd; /* bit0: cache disable */ 1748 u_int8_t lbs[2]; /* logical block size */ 1749 u_int8_t size[5]; /* number of log. blocks */ 1750 u_int8_t pp; /* power/performance */ 1751 u_int8_t flags; 1752 u_int8_t resvd; 1753 } scsipi_sense; 1754 u_int64_t blocks; 1755 int error, blksize; 1756 1757 /* 1758 * sd_read_capacity (ie "read capacity") and mode sense page 6 1759 * give the same information. Do both for now, and check 1760 * for consistency. 1761 * XXX probably differs for removable media 1762 */ 1763 dp->blksize = SD_DEFAULT_BLKSIZE; 1764 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1765 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1766 1767 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1768 &scsipi_sense.header, sizeof(scsipi_sense), 1769 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1770 1771 if (error != 0) 1772 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1773 1774 dp->blksize = blksize; 1775 if (!sd_validate_blksize(NULL, dp->blksize)) 1776 dp->blksize = _2btol(scsipi_sense.lbs); 1777 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1778 dp->blksize = SD_DEFAULT_BLKSIZE; 1779 1780 /* 1781 * Create a pseudo-geometry. 1782 */ 1783 dp->heads = 64; 1784 dp->sectors = 32; 1785 dp->cyls = blocks / (dp->heads * dp->sectors); 1786 dp->disksize = _5btol(scsipi_sense.size); 1787 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1788 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1789 (unsigned long long)dp->disksize, 1790 (unsigned long long)blocks); 1791 dp->disksize = blocks; 1792 } 1793 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1794 1795 return (SDGP_RESULT_OK); 1796 } 1797 1798 /* 1799 * Get the scsi driver to send a full inquiry to the * device and use the 1800 * results to fill out the disk parameter structure. 1801 */ 1802 static int 1803 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1804 { 1805 u_int64_t blocks; 1806 int error, blksize; 1807 #if 0 1808 int i; 1809 u_int8_t *p; 1810 #endif 1811 1812 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1813 flags); 1814 if (blocks == 0) { 1815 struct scsipi_read_format_capacities cmd; 1816 struct { 1817 struct scsipi_capacity_list_header header; 1818 struct scsipi_capacity_descriptor desc; 1819 } __attribute__((packed)) data; 1820 1821 memset(&cmd, 0, sizeof(cmd)); 1822 memset(&data, 0, sizeof(data)); 1823 cmd.opcode = READ_FORMAT_CAPACITIES; 1824 _lto2b(sizeof(data), cmd.length); 1825 1826 error = scsipi_command(sd->sc_periph, 1827 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1828 SDRETRIES, 20000, NULL, 1829 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1830 if (error == EFTYPE) { 1831 /* Medium Format Corrupted, handle as not formatted */ 1832 return (SDGP_RESULT_UNFORMATTED); 1833 } 1834 if (error || data.header.length == 0) 1835 return (SDGP_RESULT_OFFLINE); 1836 1837 #if 0 1838 printf("rfc: length=%d\n", data.header.length); 1839 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"); 1840 #endif 1841 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1842 case SCSIPI_CAP_DESC_CODE_RESERVED: 1843 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1844 break; 1845 1846 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1847 return (SDGP_RESULT_UNFORMATTED); 1848 1849 case SCSIPI_CAP_DESC_CODE_NONE: 1850 return (SDGP_RESULT_OFFLINE); 1851 } 1852 1853 dp->disksize = blocks = _4btol(data.desc.nblks); 1854 if (blocks == 0) 1855 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1856 1857 blksize = _3btol(data.desc.blklen); 1858 1859 } else if (!sd_validate_blksize(NULL, blksize)) { 1860 struct sd_mode_sense_data scsipi_sense; 1861 int big, bsize; 1862 struct scsi_general_block_descriptor *bdesc; 1863 1864 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1865 error = sd_mode_sense(sd, 0, &scsipi_sense, 1866 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1867 if (!error) { 1868 if (big) { 1869 bdesc = (void *)(&scsipi_sense.header.big + 1); 1870 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1871 } else { 1872 bdesc = (void *)(&scsipi_sense.header.small + 1); 1873 bsize = scsipi_sense.header.small.blk_desc_len; 1874 } 1875 1876 #if 0 1877 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1878 printf("page 0 bsize=%d\n", bsize); 1879 printf("page 0 ok\n"); 1880 #endif 1881 1882 if (bsize >= 8) { 1883 blksize = _3btol(bdesc->blklen); 1884 } 1885 } 1886 } 1887 1888 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1889 blksize = SD_DEFAULT_BLKSIZE; 1890 1891 dp->blksize = blksize; 1892 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1893 return (0); 1894 } 1895 1896 static int 1897 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1898 { 1899 struct sd_mode_sense_data scsipi_sense; 1900 int error; 1901 int big, byte2; 1902 size_t poffset; 1903 union scsi_disk_pages *pages; 1904 1905 byte2 = SMS_DBD; 1906 again: 1907 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1908 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1909 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1910 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1911 flags | XS_CTL_SILENT, &big); 1912 if (error) { 1913 if (byte2 == SMS_DBD) { 1914 /* No result; try once more with DBD off */ 1915 byte2 = 0; 1916 goto again; 1917 } 1918 return (error); 1919 } 1920 1921 if (big) { 1922 poffset = sizeof scsipi_sense.header.big; 1923 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1924 } else { 1925 poffset = sizeof scsipi_sense.header.small; 1926 poffset += scsipi_sense.header.small.blk_desc_len; 1927 } 1928 1929 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1930 return ERESTART; 1931 1932 pages = (void *)((u_long)&scsipi_sense + poffset); 1933 #if 0 1934 { 1935 size_t i; 1936 u_int8_t *p; 1937 1938 printf("page 4 sense:"); 1939 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1940 i--, p++) 1941 printf(" %02x", *p); 1942 printf("\n"); 1943 printf("page 4 pg_code=%d sense=%p/%p\n", 1944 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1945 } 1946 #endif 1947 1948 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1949 return (ERESTART); 1950 1951 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1952 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1953 _3btol(pages->rigid_geometry.ncyl), 1954 pages->rigid_geometry.nheads, 1955 _2btol(pages->rigid_geometry.st_cyl_wp), 1956 _2btol(pages->rigid_geometry.st_cyl_rwc), 1957 _2btol(pages->rigid_geometry.land_zone))); 1958 1959 /* 1960 * KLUDGE!! (for zone recorded disks) 1961 * give a number of sectors so that sec * trks * cyls 1962 * is <= disk_size 1963 * can lead to wasted space! THINK ABOUT THIS ! 1964 */ 1965 dp->heads = pages->rigid_geometry.nheads; 1966 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1967 if (dp->heads == 0 || dp->cyls == 0) 1968 return (ERESTART); 1969 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1970 1971 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1972 if (dp->rot_rate == 0) 1973 dp->rot_rate = 3600; 1974 1975 #if 0 1976 printf("page 4 ok\n"); 1977 #endif 1978 return (0); 1979 } 1980 1981 static int 1982 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1983 { 1984 struct sd_mode_sense_data scsipi_sense; 1985 int error; 1986 int big, byte2; 1987 size_t poffset; 1988 union scsi_disk_pages *pages; 1989 1990 byte2 = SMS_DBD; 1991 again: 1992 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1993 error = sd_mode_sense(sd, 0, &scsipi_sense, 1994 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1995 sizeof(scsipi_sense.pages.flex_geometry), 5, 1996 flags | XS_CTL_SILENT, &big); 1997 if (error) { 1998 if (byte2 == SMS_DBD) { 1999 /* No result; try once more with DBD off */ 2000 byte2 = 0; 2001 goto again; 2002 } 2003 return (error); 2004 } 2005 2006 if (big) { 2007 poffset = sizeof scsipi_sense.header.big; 2008 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2009 } else { 2010 poffset = sizeof scsipi_sense.header.small; 2011 poffset += scsipi_sense.header.small.blk_desc_len; 2012 } 2013 2014 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2015 return ERESTART; 2016 2017 pages = (void *)((u_long)&scsipi_sense + poffset); 2018 #if 0 2019 { 2020 size_t i; 2021 u_int8_t *p; 2022 2023 printf("page 5 sense:"); 2024 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2025 i--, p++) 2026 printf(" %02x", *p); 2027 printf("\n"); 2028 printf("page 5 pg_code=%d sense=%p/%p\n", 2029 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2030 } 2031 #endif 2032 2033 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2034 return (ERESTART); 2035 2036 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2037 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2038 _3btol(pages->flex_geometry.ncyl), 2039 pages->flex_geometry.nheads, 2040 pages->flex_geometry.ph_sec_tr, 2041 _2btol(pages->flex_geometry.bytes_s))); 2042 2043 dp->heads = pages->flex_geometry.nheads; 2044 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2045 dp->sectors = pages->flex_geometry.ph_sec_tr; 2046 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2047 return (ERESTART); 2048 2049 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2050 if (dp->rot_rate == 0) 2051 dp->rot_rate = 3600; 2052 2053 #if 0 2054 printf("page 5 ok\n"); 2055 #endif 2056 return (0); 2057 } 2058 2059 static int 2060 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2061 { 2062 int error; 2063 2064 /* 2065 * If offline, the SDEV_MEDIA_LOADED flag will be 2066 * cleared by the caller if necessary. 2067 */ 2068 if (sd->type == T_SIMPLE_DIRECT) { 2069 error = sd_get_simplifiedparms(sd, dp, flags); 2070 if (!error) 2071 disk_blocksize(&sd->sc_dk, dp->blksize); 2072 return (error); 2073 } 2074 2075 error = sd_get_capacity(sd, dp, flags); 2076 if (error) 2077 return (error); 2078 2079 disk_blocksize(&sd->sc_dk, dp->blksize); 2080 2081 if (sd->type == T_OPTICAL) 2082 goto page0; 2083 2084 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2085 if (!sd_get_parms_page5(sd, dp, flags) || 2086 !sd_get_parms_page4(sd, dp, flags)) 2087 return (SDGP_RESULT_OK); 2088 } else { 2089 if (!sd_get_parms_page4(sd, dp, flags) || 2090 !sd_get_parms_page5(sd, dp, flags)) 2091 return (SDGP_RESULT_OK); 2092 } 2093 2094 page0: 2095 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 2096 /* Try calling driver's method for figuring out geometry. */ 2097 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2098 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2099 (sd->sc_periph, dp, dp->disksize)) { 2100 /* 2101 * Use adaptec standard fictitious geometry 2102 * this depends on which controller (e.g. 1542C is 2103 * different. but we have to put SOMETHING here..) 2104 */ 2105 dp->heads = 64; 2106 dp->sectors = 32; 2107 dp->cyls = dp->disksize / (64 * 32); 2108 } 2109 dp->rot_rate = 3600; 2110 return (SDGP_RESULT_OK); 2111 } 2112 2113 static int 2114 sd_flush(struct sd_softc *sd, int flags) 2115 { 2116 struct scsipi_periph *periph = sd->sc_periph; 2117 struct scsi_synchronize_cache_10 cmd; 2118 2119 /* 2120 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2121 * We issue with address 0 length 0, which should be 2122 * interpreted by the device as "all remaining blocks 2123 * starting at address 0". We ignore ILLEGAL REQUEST 2124 * in the event that the command is not supported by 2125 * the device, and poll for completion so that we know 2126 * that the cache has actually been flushed. 2127 * 2128 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2129 * command, as indicated by our quirks flags. 2130 * 2131 * XXX What about older devices? 2132 */ 2133 if (periph->periph_version < 2 || 2134 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2135 return (0); 2136 2137 sd->flags |= SDF_FLUSHING; 2138 memset(&cmd, 0, sizeof(cmd)); 2139 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2140 2141 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2142 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2143 } 2144 2145 static int 2146 sd_getcache(struct sd_softc *sd, int *bitsp) 2147 { 2148 struct scsipi_periph *periph = sd->sc_periph; 2149 struct sd_mode_sense_data scsipi_sense; 2150 int error, bits = 0; 2151 int big; 2152 union scsi_disk_pages *pages; 2153 2154 if (periph->periph_version < 2) 2155 return (EOPNOTSUPP); 2156 2157 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2158 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2159 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2160 if (error) 2161 return (error); 2162 2163 if (big) 2164 pages = (void *)(&scsipi_sense.header.big + 1); 2165 else 2166 pages = (void *)(&scsipi_sense.header.small + 1); 2167 2168 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2169 bits |= DKCACHE_READ; 2170 if (pages->caching_params.flags & CACHING_WCE) 2171 bits |= DKCACHE_WRITE; 2172 if (pages->caching_params.pg_code & PGCODE_PS) 2173 bits |= DKCACHE_SAVE; 2174 2175 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2176 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2177 sizeof(scsipi_sense.pages.caching_params), 2178 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2179 if (error == 0) { 2180 if (big) 2181 pages = (void *)(&scsipi_sense.header.big + 1); 2182 else 2183 pages = (void *)(&scsipi_sense.header.small + 1); 2184 2185 if (pages->caching_params.flags & CACHING_RCD) 2186 bits |= DKCACHE_RCHANGE; 2187 if (pages->caching_params.flags & CACHING_WCE) 2188 bits |= DKCACHE_WCHANGE; 2189 } 2190 2191 *bitsp = bits; 2192 2193 return (0); 2194 } 2195 2196 static int 2197 sd_setcache(struct sd_softc *sd, int bits) 2198 { 2199 struct scsipi_periph *periph = sd->sc_periph; 2200 struct sd_mode_sense_data scsipi_sense; 2201 int error; 2202 uint8_t oflags, byte2 = 0; 2203 int big; 2204 union scsi_disk_pages *pages; 2205 2206 if (periph->periph_version < 2) 2207 return (EOPNOTSUPP); 2208 2209 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2210 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2211 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2212 if (error) 2213 return (error); 2214 2215 if (big) 2216 pages = (void *)(&scsipi_sense.header.big + 1); 2217 else 2218 pages = (void *)(&scsipi_sense.header.small + 1); 2219 2220 oflags = pages->caching_params.flags; 2221 2222 if (bits & DKCACHE_READ) 2223 pages->caching_params.flags &= ~CACHING_RCD; 2224 else 2225 pages->caching_params.flags |= CACHING_RCD; 2226 2227 if (bits & DKCACHE_WRITE) 2228 pages->caching_params.flags |= CACHING_WCE; 2229 else 2230 pages->caching_params.flags &= ~CACHING_WCE; 2231 2232 if (oflags == pages->caching_params.flags) 2233 return (0); 2234 2235 pages->caching_params.pg_code &= PGCODE_MASK; 2236 2237 if (bits & DKCACHE_SAVE) 2238 byte2 |= SMS_SP; 2239 2240 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2241 sizeof(struct scsi_mode_page_header) + 2242 pages->caching_params.pg_length, 0, big)); 2243 } 2244 2245 static void 2246 sd_set_properties(struct sd_softc *sd) 2247 { 2248 prop_dictionary_t disk_info, odisk_info, geom; 2249 2250 disk_info = prop_dictionary_create(); 2251 2252 geom = prop_dictionary_create(); 2253 2254 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2255 sd->params.disksize); 2256 2257 prop_dictionary_set_uint32(geom, "sector-size", 2258 sd->params.blksize); 2259 2260 prop_dictionary_set_uint16(geom, "sectors-per-track", 2261 sd->params.sectors); 2262 2263 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2264 sd->params.heads); 2265 2266 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2267 sd->params.cyls); 2268 2269 prop_dictionary_set(disk_info, "geometry", geom); 2270 prop_object_release(geom); 2271 2272 prop_dictionary_set(device_properties(&sd->sc_dev), 2273 "disk-info", disk_info); 2274 2275 /* 2276 * Don't release disk_info here; we keep a reference to it. 2277 * disk_detach() will release it when we go away. 2278 */ 2279 2280 odisk_info = sd->sc_dk.dk_info; 2281 sd->sc_dk.dk_info = disk_info; 2282 if (odisk_info) 2283 prop_object_release(odisk_info); 2284 } 2285