1 /* $NetBSD: sd.c,v 1.296 2012/02/02 19:43:06 tls 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Originally written by Julian Elischer (julian@dialix.oz.au) 34 * for TRW Financial Systems for use under the MACH(2.5) operating system. 35 * 36 * TRW Financial Systems, in accordance with their agreement with Carnegie 37 * Mellon University, makes this software available to CMU to distribute 38 * or use in any manner that they see fit as long as this message is kept with 39 * the software. For this reason TFS also grants any other persons or 40 * organisations permission to use or modify this software. 41 * 42 * TFS supplies this software to be publicly redistributed 43 * on the understanding that TFS is not responsible for the correct 44 * functioning of this software in any circumstances. 45 * 46 * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.296 2012/02/02 19:43:06 tls Exp $"); 51 52 #include "opt_scsi.h" 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/kernel.h> 57 #include <sys/file.h> 58 #include <sys/stat.h> 59 #include <sys/ioctl.h> 60 #include <sys/scsiio.h> 61 #include <sys/buf.h> 62 #include <sys/bufq.h> 63 #include <sys/uio.h> 64 #include <sys/malloc.h> 65 #include <sys/errno.h> 66 #include <sys/device.h> 67 #include <sys/disklabel.h> 68 #include <sys/disk.h> 69 #include <sys/proc.h> 70 #include <sys/conf.h> 71 #include <sys/vnode.h> 72 #include <sys/rnd.h> 73 #include <sys/cprng.h> 74 75 #include <dev/scsipi/scsi_spc.h> 76 #include <dev/scsipi/scsipi_all.h> 77 #include <dev/scsipi/scsi_all.h> 78 #include <dev/scsipi/scsipi_disk.h> 79 #include <dev/scsipi/scsi_disk.h> 80 #include <dev/scsipi/scsiconf.h> 81 #include <dev/scsipi/scsipi_base.h> 82 #include <dev/scsipi/sdvar.h> 83 84 #include <prop/proplib.h> 85 86 #define SDUNIT(dev) DISKUNIT(dev) 87 #define SDPART(dev) DISKPART(dev) 88 #define SDMINOR(unit, part) DISKMINOR(unit, part) 89 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 90 91 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 92 93 #define SD_DEFAULT_BLKSIZE 512 94 95 static void sdminphys(struct buf *); 96 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 97 static int sdgetdisklabel(struct sd_softc *); 98 static void sdstart(struct scsipi_periph *); 99 static void sdrestart(void *); 100 static void sddone(struct scsipi_xfer *, int); 101 static bool sd_suspend(device_t, const pmf_qual_t *); 102 static bool sd_shutdown(device_t, int); 103 static int sd_interpret_sense(struct scsipi_xfer *); 104 static int sdlastclose(device_t); 105 106 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 107 int, int *); 108 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 109 int); 110 static int sd_validate_blksize(struct scsipi_periph *, int); 111 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 112 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 113 int); 114 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 115 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 117 int); 118 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 119 int); 120 121 static int sd_flush(struct sd_softc *, int); 122 static int sd_getcache(struct sd_softc *, int *); 123 static int sd_setcache(struct sd_softc *, int); 124 125 static int sdmatch(device_t, cfdata_t, void *); 126 static void sdattach(device_t, device_t, void *); 127 static int sddetach(device_t, int); 128 static void sd_set_properties(struct sd_softc *); 129 130 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 131 NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 132 133 extern struct cfdriver sd_cd; 134 135 static const struct scsipi_inquiry_pattern sd_patterns[] = { 136 {T_DIRECT, T_FIXED, 137 "", "", ""}, 138 {T_DIRECT, T_REMOV, 139 "", "", ""}, 140 {T_OPTICAL, T_FIXED, 141 "", "", ""}, 142 {T_OPTICAL, T_REMOV, 143 "", "", ""}, 144 {T_SIMPLE_DIRECT, T_FIXED, 145 "", "", ""}, 146 {T_SIMPLE_DIRECT, T_REMOV, 147 "", "", ""}, 148 }; 149 150 static dev_type_open(sdopen); 151 static dev_type_close(sdclose); 152 static dev_type_read(sdread); 153 static dev_type_write(sdwrite); 154 static dev_type_ioctl(sdioctl); 155 static dev_type_strategy(sdstrategy); 156 static dev_type_dump(sddump); 157 static dev_type_size(sdsize); 158 159 const struct bdevsw sd_bdevsw = { 160 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 161 }; 162 163 const struct cdevsw sd_cdevsw = { 164 sdopen, sdclose, sdread, sdwrite, sdioctl, 165 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 166 }; 167 168 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 169 170 static const struct scsipi_periphsw sd_switch = { 171 sd_interpret_sense, /* check our error handler first */ 172 sdstart, /* have a queue, served by this */ 173 NULL, /* have no async handler */ 174 sddone, /* deal with stats at interrupt time */ 175 }; 176 177 struct sd_mode_sense_data { 178 /* 179 * XXX 180 * We are not going to parse this as-is -- it just has to be large 181 * enough. 182 */ 183 union { 184 struct scsi_mode_parameter_header_6 small; 185 struct scsi_mode_parameter_header_10 big; 186 } header; 187 struct scsi_general_block_descriptor blk_desc; 188 union scsi_disk_pages pages; 189 }; 190 191 /* 192 * The routine called by the low level scsi routine when it discovers 193 * A device suitable for this driver 194 */ 195 static int 196 sdmatch(device_t parent, cfdata_t match, 197 void *aux) 198 { 199 struct scsipibus_attach_args *sa = aux; 200 int priority; 201 202 (void)scsipi_inqmatch(&sa->sa_inqbuf, 203 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 204 sizeof(sd_patterns[0]), &priority); 205 206 return (priority); 207 } 208 209 /* 210 * Attach routine common to atapi & scsi. 211 */ 212 static void 213 sdattach(device_t parent, device_t self, void *aux) 214 { 215 struct sd_softc *sd = device_private(self); 216 struct scsipibus_attach_args *sa = aux; 217 struct scsipi_periph *periph = sa->sa_periph; 218 int error, result, rndval = cprng_strong32(); 219 struct disk_parms *dp = &sd->params; 220 char pbuf[9]; 221 222 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 223 224 sd->sc_dev = self; 225 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 226 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 227 if (sd->type == T_SIMPLE_DIRECT) 228 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 229 230 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 231 periph->periph_version == 0) 232 sd->flags |= SDF_ANCIENT; 233 234 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 235 236 callout_init(&sd->sc_callout, 0); 237 238 /* 239 * Store information needed to contact our base driver 240 */ 241 sd->sc_periph = periph; 242 243 periph->periph_dev = sd->sc_dev; 244 periph->periph_switch = &sd_switch; 245 246 /* 247 * Increase our openings to the maximum-per-periph 248 * supported by the adapter. This will either be 249 * clamped down or grown by the adapter if necessary. 250 */ 251 periph->periph_openings = 252 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 253 periph->periph_flags |= PERIPH_GROW_OPENINGS; 254 255 /* 256 * Initialize and attach the disk structure. 257 */ 258 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 259 disk_attach(&sd->sc_dk); 260 261 /* 262 * Use the subdriver to request information regarding the drive. 263 */ 264 aprint_naive("\n"); 265 aprint_normal("\n"); 266 267 error = scsipi_test_unit_ready(periph, 268 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 269 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 270 271 if (error) 272 result = SDGP_RESULT_OFFLINE; 273 else 274 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 275 aprint_normal_dev(sd->sc_dev, ""); 276 switch (result) { 277 case SDGP_RESULT_OK: 278 format_bytes(pbuf, sizeof(pbuf), 279 (u_int64_t)dp->disksize * dp->blksize); 280 aprint_normal( 281 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 282 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 283 (unsigned long long)dp->disksize); 284 break; 285 286 case SDGP_RESULT_OFFLINE: 287 aprint_normal("drive offline"); 288 break; 289 290 case SDGP_RESULT_UNFORMATTED: 291 aprint_normal("unformatted media"); 292 break; 293 294 #ifdef DIAGNOSTIC 295 default: 296 panic("sdattach: unknown result from get_parms"); 297 break; 298 #endif 299 } 300 aprint_normal("\n"); 301 302 /* 303 * Establish a shutdown hook so that we can ensure that 304 * our data has actually made it onto the platter at 305 * shutdown time. Note that this relies on the fact 306 * that the shutdown hooks at the "leaves" of the device tree 307 * are run, first (thus guaranteeing that our hook runs before 308 * our ancestors'). 309 */ 310 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 311 aprint_error_dev(self, "couldn't establish power handler\n"); 312 313 /* 314 * attach the device into the random source list 315 */ 316 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 317 RND_TYPE_DISK, 0); 318 319 /* Discover wedges on this disk. */ 320 dkwedge_discover(&sd->sc_dk); 321 322 /* 323 * Disk insertion and removal times can be a useful source 324 * of entropy, though the estimator should never _count_ 325 * these bits, on insertion, because the deltas to the 326 * nonexistent) previous event should never allow it. 327 */ 328 rnd_add_uint32(&sd->rnd_source, rndval); 329 } 330 331 static int 332 sddetach(device_t self, int flags) 333 { 334 struct sd_softc *sd = device_private(self); 335 int s, bmaj, cmaj, i, mn, rc, rndval = cprng_strong32(); 336 337 rnd_add_uint32(&sd->rnd_source, rndval); 338 339 if ((rc = disk_begindetach(&sd->sc_dk, sdlastclose, self, flags)) != 0) 340 return rc; 341 342 /* locate the major number */ 343 bmaj = bdevsw_lookup_major(&sd_bdevsw); 344 cmaj = cdevsw_lookup_major(&sd_cdevsw); 345 346 /* Nuke the vnodes for any open instances */ 347 for (i = 0; i < MAXPARTITIONS; i++) { 348 mn = SDMINOR(device_unit(self), i); 349 vdevgone(bmaj, mn, mn, VBLK); 350 vdevgone(cmaj, mn, mn, VCHR); 351 } 352 353 /* kill any pending restart */ 354 callout_stop(&sd->sc_callout); 355 356 /* Delete all of our wedges. */ 357 dkwedge_delall(&sd->sc_dk); 358 359 s = splbio(); 360 361 /* Kill off any queued buffers. */ 362 bufq_drain(sd->buf_queue); 363 364 bufq_free(sd->buf_queue); 365 366 /* Kill off any pending commands. */ 367 scsipi_kill_pending(sd->sc_periph); 368 369 splx(s); 370 371 /* Detach from the disk list. */ 372 disk_detach(&sd->sc_dk); 373 disk_destroy(&sd->sc_dk); 374 375 callout_destroy(&sd->sc_callout); 376 377 pmf_device_deregister(self); 378 379 /* Unhook the entropy source. */ 380 rnd_detach_source(&sd->rnd_source); 381 382 return (0); 383 } 384 385 /* 386 * open the device. Make sure the partition info is a up-to-date as can be. 387 */ 388 static int 389 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 390 { 391 struct sd_softc *sd; 392 struct scsipi_periph *periph; 393 struct scsipi_adapter *adapt; 394 int unit, part; 395 int error; 396 397 unit = SDUNIT(dev); 398 sd = device_lookup_private(&sd_cd, unit); 399 if (sd == NULL) 400 return (ENXIO); 401 402 if (!device_is_active(sd->sc_dev)) 403 return (ENODEV); 404 405 part = SDPART(dev); 406 407 mutex_enter(&sd->sc_dk.dk_openlock); 408 409 /* 410 * If there are wedges, and this is not RAW_PART, then we 411 * need to fail. 412 */ 413 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 414 error = EBUSY; 415 goto bad1; 416 } 417 418 periph = sd->sc_periph; 419 adapt = periph->periph_channel->chan_adapter; 420 421 SC_DEBUG(periph, SCSIPI_DB1, 422 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, 423 sd_cd.cd_ndevs, part)); 424 425 /* 426 * If this is the first open of this device, add a reference 427 * to the adapter. 428 */ 429 if (sd->sc_dk.dk_openmask == 0 && 430 (error = scsipi_adapter_addref(adapt)) != 0) 431 goto bad1; 432 433 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 434 /* 435 * If any partition is open, but the disk has been invalidated, 436 * disallow further opens of non-raw partition 437 */ 438 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 439 (part != RAW_PART || fmt != S_IFCHR)) { 440 error = EIO; 441 goto bad2; 442 } 443 } else { 444 int silent; 445 446 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 447 silent = XS_CTL_SILENT; 448 else 449 silent = 0; 450 451 /* Check that it is still responding and ok. */ 452 error = scsipi_test_unit_ready(periph, 453 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 454 silent); 455 456 /* 457 * Start the pack spinning if necessary. Always allow the 458 * raw parition to be opened, for raw IOCTLs. Data transfers 459 * will check for SDEV_MEDIA_LOADED. 460 */ 461 if (error == EIO) { 462 int error2; 463 464 error2 = scsipi_start(periph, SSS_START, silent); 465 switch (error2) { 466 case 0: 467 error = 0; 468 break; 469 case EIO: 470 case EINVAL: 471 break; 472 default: 473 error = error2; 474 break; 475 } 476 } 477 if (error) { 478 if (silent && (flag & FSILENT) == 0) 479 goto out; 480 goto bad2; 481 } 482 483 periph->periph_flags |= PERIPH_OPEN; 484 485 if (periph->periph_flags & PERIPH_REMOVABLE) { 486 /* Lock the pack in. */ 487 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 488 XS_CTL_IGNORE_ILLEGAL_REQUEST | 489 XS_CTL_IGNORE_MEDIA_CHANGE | 490 XS_CTL_SILENT); 491 if (error) 492 goto bad3; 493 } 494 495 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 496 int param_error; 497 periph->periph_flags |= PERIPH_MEDIA_LOADED; 498 499 /* 500 * Load the physical device parameters. 501 * 502 * Note that if media is present but unformatted, 503 * we allow the open (so that it can be formatted!). 504 * The drive should refuse real I/O, if the media is 505 * unformatted. 506 */ 507 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 508 == SDGP_RESULT_OFFLINE) { 509 error = ENXIO; 510 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 511 goto bad3; 512 } 513 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 514 515 /* Load the partition info if not already loaded. */ 516 if (param_error == 0) { 517 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 518 error = EIO; 519 goto bad3; 520 } 521 SC_DEBUG(periph, SCSIPI_DB3, 522 ("Disklabel loaded ")); 523 } 524 } 525 } 526 527 /* Check that the partition exists. */ 528 if (part != RAW_PART && 529 (part >= sd->sc_dk.dk_label->d_npartitions || 530 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 531 error = ENXIO; 532 goto bad3; 533 } 534 535 out: /* Insure only one open at a time. */ 536 switch (fmt) { 537 case S_IFCHR: 538 sd->sc_dk.dk_copenmask |= (1 << part); 539 break; 540 case S_IFBLK: 541 sd->sc_dk.dk_bopenmask |= (1 << part); 542 break; 543 } 544 sd->sc_dk.dk_openmask = 545 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 546 547 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 548 mutex_exit(&sd->sc_dk.dk_openlock); 549 return (0); 550 551 bad3: 552 if (sd->sc_dk.dk_openmask == 0) { 553 if (periph->periph_flags & PERIPH_REMOVABLE) 554 scsipi_prevent(periph, SPAMR_ALLOW, 555 XS_CTL_IGNORE_ILLEGAL_REQUEST | 556 XS_CTL_IGNORE_MEDIA_CHANGE | 557 XS_CTL_SILENT); 558 periph->periph_flags &= ~PERIPH_OPEN; 559 } 560 561 bad2: 562 if (sd->sc_dk.dk_openmask == 0) 563 scsipi_adapter_delref(adapt); 564 565 bad1: 566 mutex_exit(&sd->sc_dk.dk_openlock); 567 return (error); 568 } 569 570 /* 571 * Caller must hold sd->sc_dk.dk_openlock. 572 */ 573 static int 574 sdlastclose(device_t self) 575 { 576 struct sd_softc *sd = device_private(self); 577 struct scsipi_periph *periph = sd->sc_periph; 578 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 579 580 /* 581 * If the disk cache needs flushing, and the disk supports 582 * it, do it now. 583 */ 584 if ((sd->flags & SDF_DIRTY) != 0) { 585 if (sd_flush(sd, 0)) { 586 aprint_error_dev(sd->sc_dev, 587 "cache synchronization failed\n"); 588 sd->flags &= ~SDF_FLUSHING; 589 } else 590 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 591 } 592 593 scsipi_wait_drain(periph); 594 595 if (periph->periph_flags & PERIPH_REMOVABLE) 596 scsipi_prevent(periph, SPAMR_ALLOW, 597 XS_CTL_IGNORE_ILLEGAL_REQUEST | 598 XS_CTL_IGNORE_NOT_READY | 599 XS_CTL_SILENT); 600 periph->periph_flags &= ~PERIPH_OPEN; 601 602 scsipi_wait_drain(periph); 603 604 scsipi_adapter_delref(adapt); 605 606 return 0; 607 } 608 609 /* 610 * close the device.. only called if we are the LAST occurence of an open 611 * device. Convenient now but usually a pain. 612 */ 613 static int 614 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 615 { 616 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 617 int part = SDPART(dev); 618 619 mutex_enter(&sd->sc_dk.dk_openlock); 620 switch (fmt) { 621 case S_IFCHR: 622 sd->sc_dk.dk_copenmask &= ~(1 << part); 623 break; 624 case S_IFBLK: 625 sd->sc_dk.dk_bopenmask &= ~(1 << part); 626 break; 627 } 628 sd->sc_dk.dk_openmask = 629 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 630 631 if (sd->sc_dk.dk_openmask == 0) 632 sdlastclose(sd->sc_dev); 633 634 mutex_exit(&sd->sc_dk.dk_openlock); 635 return (0); 636 } 637 638 /* 639 * Actually translate the requested transfer into one the physical driver 640 * can understand. The transfer is described by a buf and will include 641 * only one physical transfer. 642 */ 643 static void 644 sdstrategy(struct buf *bp) 645 { 646 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 647 struct scsipi_periph *periph = sd->sc_periph; 648 struct disklabel *lp; 649 daddr_t blkno; 650 int s; 651 bool sector_aligned; 652 653 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 654 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 655 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 656 /* 657 * If the device has been made invalid, error out 658 */ 659 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 660 !device_is_active(sd->sc_dev)) { 661 if (periph->periph_flags & PERIPH_OPEN) 662 bp->b_error = EIO; 663 else 664 bp->b_error = ENODEV; 665 goto done; 666 } 667 668 lp = sd->sc_dk.dk_label; 669 670 /* 671 * The transfer must be a whole number of blocks, offset must not be 672 * negative. 673 */ 674 if (lp->d_secsize == DEV_BSIZE) { 675 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 676 } else { 677 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 678 } 679 if (!sector_aligned || bp->b_blkno < 0) { 680 bp->b_error = EINVAL; 681 goto done; 682 } 683 /* 684 * If it's a null transfer, return immediatly 685 */ 686 if (bp->b_bcount == 0) 687 goto done; 688 689 /* 690 * Do bounds checking, adjust transfer. if error, process. 691 * If end of partition, just return. 692 */ 693 if (SDPART(bp->b_dev) == RAW_PART) { 694 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 695 sd->params.disksize512) <= 0) 696 goto done; 697 } else { 698 if (bounds_check_with_label(&sd->sc_dk, bp, 699 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 700 goto done; 701 } 702 703 /* 704 * Now convert the block number to absolute and put it in 705 * terms of the device's logical block size. 706 */ 707 if (lp->d_secsize == DEV_BSIZE) 708 blkno = bp->b_blkno; 709 else if (lp->d_secsize > DEV_BSIZE) 710 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 711 else 712 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 713 714 if (SDPART(bp->b_dev) != RAW_PART) 715 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 716 717 bp->b_rawblkno = blkno; 718 719 s = splbio(); 720 721 /* 722 * Place it in the queue of disk activities for this disk. 723 * 724 * XXX Only do disksort() if the current operating mode does not 725 * XXX include tagged queueing. 726 */ 727 bufq_put(sd->buf_queue, bp); 728 729 /* 730 * Tell the device to get going on the transfer if it's 731 * not doing anything, otherwise just wait for completion 732 */ 733 sdstart(sd->sc_periph); 734 735 splx(s); 736 return; 737 738 done: 739 /* 740 * Correctly set the buf to indicate a completed xfer 741 */ 742 bp->b_resid = bp->b_bcount; 743 biodone(bp); 744 } 745 746 /* 747 * sdstart looks to see if there is a buf waiting for the device 748 * and that the device is not already busy. If both are true, 749 * It dequeues the buf and creates a scsi command to perform the 750 * transfer in the buf. The transfer request will call scsipi_done 751 * on completion, which will in turn call this routine again 752 * so that the next queued transfer is performed. 753 * The bufs are queued by the strategy routine (sdstrategy) 754 * 755 * This routine is also called after other non-queued requests 756 * have been made of the scsi driver, to ensure that the queue 757 * continues to be drained. 758 * 759 * must be called at the correct (highish) spl level 760 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 761 */ 762 static void 763 sdstart(struct scsipi_periph *periph) 764 { 765 struct sd_softc *sd = device_private(periph->periph_dev); 766 struct disklabel *lp = sd->sc_dk.dk_label; 767 struct buf *bp = 0; 768 struct scsipi_rw_16 cmd16; 769 struct scsipi_rw_10 cmd_big; 770 struct scsi_rw_6 cmd_small; 771 struct scsipi_generic *cmdp; 772 struct scsipi_xfer *xs; 773 int nblks, cmdlen, error, flags; 774 775 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 776 /* 777 * Check if the device has room for another command 778 */ 779 while (periph->periph_active < periph->periph_openings) { 780 /* 781 * there is excess capacity, but a special waits 782 * It'll need the adapter as soon as we clear out of the 783 * way and let it run (user level wait). 784 */ 785 if (periph->periph_flags & PERIPH_WAITING) { 786 periph->periph_flags &= ~PERIPH_WAITING; 787 wakeup((void *)periph); 788 return; 789 } 790 791 /* 792 * If the device has become invalid, abort all the 793 * reads and writes until all files have been closed and 794 * re-opened 795 */ 796 if (__predict_false( 797 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 798 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 799 bp->b_error = EIO; 800 bp->b_resid = bp->b_bcount; 801 biodone(bp); 802 continue; 803 } else { 804 return; 805 } 806 } 807 808 /* 809 * See if there is a buf with work for us to do.. 810 */ 811 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 812 return; 813 814 /* 815 * We have a buf, now we should make a command. 816 */ 817 818 if (lp->d_secsize == DEV_BSIZE) 819 nblks = bp->b_bcount >> DEV_BSHIFT; 820 else 821 nblks = howmany(bp->b_bcount, lp->d_secsize); 822 823 /* 824 * Fill out the scsi command. Use the smallest CDB possible 825 * (6-byte, 10-byte, or 16-byte). 826 */ 827 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 828 ((nblks & 0xff) == nblks) && 829 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 830 /* 6-byte CDB */ 831 memset(&cmd_small, 0, sizeof(cmd_small)); 832 cmd_small.opcode = (bp->b_flags & B_READ) ? 833 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 834 _lto3b(bp->b_rawblkno, cmd_small.addr); 835 cmd_small.length = nblks & 0xff; 836 cmdlen = sizeof(cmd_small); 837 cmdp = (struct scsipi_generic *)&cmd_small; 838 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 839 /* 10-byte CDB */ 840 memset(&cmd_big, 0, sizeof(cmd_big)); 841 cmd_big.opcode = (bp->b_flags & B_READ) ? 842 READ_10 : WRITE_10; 843 _lto4b(bp->b_rawblkno, cmd_big.addr); 844 _lto2b(nblks, cmd_big.length); 845 cmdlen = sizeof(cmd_big); 846 cmdp = (struct scsipi_generic *)&cmd_big; 847 } else { 848 /* 16-byte CDB */ 849 memset(&cmd16, 0, sizeof(cmd16)); 850 cmd16.opcode = (bp->b_flags & B_READ) ? 851 READ_16 : WRITE_16; 852 _lto8b(bp->b_rawblkno, cmd16.addr); 853 _lto4b(nblks, cmd16.length); 854 cmdlen = sizeof(cmd16); 855 cmdp = (struct scsipi_generic *)&cmd16; 856 } 857 858 /* Instrumentation. */ 859 disk_busy(&sd->sc_dk); 860 861 /* 862 * Mark the disk dirty so that the cache will be 863 * flushed on close. 864 */ 865 if ((bp->b_flags & B_READ) == 0) 866 sd->flags |= SDF_DIRTY; 867 868 /* 869 * Figure out what flags to use. 870 */ 871 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 872 if (bp->b_flags & B_READ) 873 flags |= XS_CTL_DATA_IN; 874 else 875 flags |= XS_CTL_DATA_OUT; 876 877 /* 878 * Call the routine that chats with the adapter. 879 * Note: we cannot sleep as we may be an interrupt 880 */ 881 xs = scsipi_make_xs(periph, cmdp, cmdlen, 882 (u_char *)bp->b_data, bp->b_bcount, 883 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 884 if (__predict_false(xs == NULL)) { 885 /* 886 * out of memory. Keep this buffer in the queue, and 887 * retry later. 888 */ 889 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 890 periph); 891 return; 892 } 893 /* 894 * need to dequeue the buffer before queuing the command, 895 * because cdstart may be called recursively from the 896 * HBA driver 897 */ 898 #ifdef DIAGNOSTIC 899 if (bufq_get(sd->buf_queue) != bp) 900 panic("sdstart(): dequeued wrong buf"); 901 #else 902 bufq_get(sd->buf_queue); 903 #endif 904 error = scsipi_execute_xs(xs); 905 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 906 KASSERT(error == 0); 907 } 908 } 909 910 static void 911 sdrestart(void *v) 912 { 913 int s = splbio(); 914 sdstart((struct scsipi_periph *)v); 915 splx(s); 916 } 917 918 static void 919 sddone(struct scsipi_xfer *xs, int error) 920 { 921 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 922 struct buf *bp = xs->bp; 923 924 if (sd->flags & SDF_FLUSHING) { 925 /* Flush completed, no longer dirty. */ 926 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 927 } 928 929 if (bp) { 930 bp->b_error = error; 931 bp->b_resid = xs->resid; 932 if (error) { 933 /* on a read/write error bp->b_resid is zero, so fix */ 934 bp->b_resid = bp->b_bcount; 935 } 936 937 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 938 (bp->b_flags & B_READ)); 939 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 940 941 biodone(bp); 942 } 943 } 944 945 static void 946 sdminphys(struct buf *bp) 947 { 948 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 949 long xmax; 950 951 /* 952 * If the device is ancient, we want to make sure that 953 * the transfer fits into a 6-byte cdb. 954 * 955 * XXX Note that the SCSI-I spec says that 256-block transfers 956 * are allowed in a 6-byte read/write, and are specified 957 * by settng the "length" to 0. However, we're conservative 958 * here, allowing only 255-block transfers in case an 959 * ancient device gets confused by length == 0. A length of 0 960 * in a 10-byte read/write actually means 0 blocks. 961 */ 962 if ((sd->flags & SDF_ANCIENT) && 963 ((sd->sc_periph->periph_flags & 964 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 965 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 966 967 if (bp->b_bcount > xmax) 968 bp->b_bcount = xmax; 969 } 970 971 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 972 } 973 974 static int 975 sdread(dev_t dev, struct uio *uio, int ioflag) 976 { 977 978 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 979 } 980 981 static int 982 sdwrite(dev_t dev, struct uio *uio, int ioflag) 983 { 984 985 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 986 } 987 988 /* 989 * Perform special action on behalf of the user 990 * Knows about the internals of this device 991 */ 992 static int 993 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 994 { 995 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 996 struct scsipi_periph *periph = sd->sc_periph; 997 int part = SDPART(dev); 998 int error = 0; 999 int s; 1000 #ifdef __HAVE_OLD_DISKLABEL 1001 struct disklabel *newlabel = NULL; 1002 #endif 1003 1004 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1005 1006 /* 1007 * If the device is not valid, some IOCTLs can still be 1008 * handled on the raw partition. Check this here. 1009 */ 1010 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1011 switch (cmd) { 1012 case DIOCKLABEL: 1013 case DIOCWLABEL: 1014 case DIOCLOCK: 1015 case DIOCEJECT: 1016 case ODIOCEJECT: 1017 case DIOCGCACHE: 1018 case DIOCSCACHE: 1019 case DIOCGSTRATEGY: 1020 case DIOCSSTRATEGY: 1021 case SCIOCIDENTIFY: 1022 case OSCIOCIDENTIFY: 1023 case SCIOCCOMMAND: 1024 case SCIOCDEBUG: 1025 if (part == RAW_PART) 1026 break; 1027 /* FALLTHROUGH */ 1028 default: 1029 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1030 return (ENODEV); 1031 else 1032 return (EIO); 1033 } 1034 } 1035 1036 error = disk_ioctl(&sd->sc_dk, cmd, addr, flag, l); 1037 if (error != EPASSTHROUGH) 1038 return (error); 1039 1040 switch (cmd) { 1041 case DIOCGDINFO: 1042 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1043 return (0); 1044 1045 #ifdef __HAVE_OLD_DISKLABEL 1046 case ODIOCGDINFO: 1047 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1048 if (newlabel == NULL) 1049 return EIO; 1050 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1051 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1052 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1053 else 1054 error = ENOTTY; 1055 free(newlabel, M_TEMP); 1056 return error; 1057 #endif 1058 1059 case DIOCGPART: 1060 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1061 ((struct partinfo *)addr)->part = 1062 &sd->sc_dk.dk_label->d_partitions[part]; 1063 return (0); 1064 1065 case DIOCWDINFO: 1066 case DIOCSDINFO: 1067 #ifdef __HAVE_OLD_DISKLABEL 1068 case ODIOCWDINFO: 1069 case ODIOCSDINFO: 1070 #endif 1071 { 1072 struct disklabel *lp; 1073 1074 if ((flag & FWRITE) == 0) 1075 return (EBADF); 1076 1077 #ifdef __HAVE_OLD_DISKLABEL 1078 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1079 newlabel = malloc(sizeof *newlabel, M_TEMP, 1080 M_WAITOK | M_ZERO); 1081 if (newlabel == NULL) 1082 return EIO; 1083 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1084 lp = newlabel; 1085 } else 1086 #endif 1087 lp = (struct disklabel *)addr; 1088 1089 mutex_enter(&sd->sc_dk.dk_openlock); 1090 sd->flags |= SDF_LABELLING; 1091 1092 error = setdisklabel(sd->sc_dk.dk_label, 1093 lp, /*sd->sc_dk.dk_openmask : */0, 1094 sd->sc_dk.dk_cpulabel); 1095 if (error == 0) { 1096 if (cmd == DIOCWDINFO 1097 #ifdef __HAVE_OLD_DISKLABEL 1098 || cmd == ODIOCWDINFO 1099 #endif 1100 ) 1101 error = writedisklabel(SDLABELDEV(dev), 1102 sdstrategy, sd->sc_dk.dk_label, 1103 sd->sc_dk.dk_cpulabel); 1104 } 1105 1106 sd->flags &= ~SDF_LABELLING; 1107 mutex_exit(&sd->sc_dk.dk_openlock); 1108 #ifdef __HAVE_OLD_DISKLABEL 1109 if (newlabel != NULL) 1110 free(newlabel, M_TEMP); 1111 #endif 1112 return (error); 1113 } 1114 1115 case DIOCKLABEL: 1116 if (*(int *)addr) 1117 periph->periph_flags |= PERIPH_KEEP_LABEL; 1118 else 1119 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1120 return (0); 1121 1122 case DIOCWLABEL: 1123 if ((flag & FWRITE) == 0) 1124 return (EBADF); 1125 if (*(int *)addr) 1126 sd->flags |= SDF_WLABEL; 1127 else 1128 sd->flags &= ~SDF_WLABEL; 1129 return (0); 1130 1131 case DIOCLOCK: 1132 if (periph->periph_flags & PERIPH_REMOVABLE) 1133 return (scsipi_prevent(periph, 1134 (*(int *)addr) ? 1135 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1136 else 1137 return (ENOTTY); 1138 1139 case DIOCEJECT: 1140 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1141 return (ENOTTY); 1142 if (*(int *)addr == 0) { 1143 /* 1144 * Don't force eject: check that we are the only 1145 * partition open. If so, unlock it. 1146 */ 1147 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1148 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1149 sd->sc_dk.dk_openmask) { 1150 error = scsipi_prevent(periph, SPAMR_ALLOW, 1151 XS_CTL_IGNORE_NOT_READY); 1152 if (error) 1153 return (error); 1154 } else { 1155 return (EBUSY); 1156 } 1157 } 1158 /* FALLTHROUGH */ 1159 case ODIOCEJECT: 1160 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1161 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1162 1163 case DIOCGDEFLABEL: 1164 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1165 return (0); 1166 1167 #ifdef __HAVE_OLD_DISKLABEL 1168 case ODIOCGDEFLABEL: 1169 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1170 if (newlabel == NULL) 1171 return EIO; 1172 sdgetdefaultlabel(sd, newlabel); 1173 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1174 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1175 else 1176 error = ENOTTY; 1177 free(newlabel, M_TEMP); 1178 return error; 1179 #endif 1180 1181 case DIOCGCACHE: 1182 return (sd_getcache(sd, (int *) addr)); 1183 1184 case DIOCSCACHE: 1185 if ((flag & FWRITE) == 0) 1186 return (EBADF); 1187 return (sd_setcache(sd, *(int *) addr)); 1188 1189 case DIOCCACHESYNC: 1190 /* 1191 * XXX Do we really need to care about having a writable 1192 * file descriptor here? 1193 */ 1194 if ((flag & FWRITE) == 0) 1195 return (EBADF); 1196 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1197 error = sd_flush(sd, 0); 1198 if (error) 1199 sd->flags &= ~SDF_FLUSHING; 1200 else 1201 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1202 } else 1203 error = 0; 1204 return (error); 1205 1206 case DIOCAWEDGE: 1207 { 1208 struct dkwedge_info *dkw = (void *) addr; 1209 1210 if ((flag & FWRITE) == 0) 1211 return (EBADF); 1212 1213 /* If the ioctl happens here, the parent is us. */ 1214 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1215 sizeof(dkw->dkw_parent)); 1216 return (dkwedge_add(dkw)); 1217 } 1218 1219 case DIOCDWEDGE: 1220 { 1221 struct dkwedge_info *dkw = (void *) addr; 1222 1223 if ((flag & FWRITE) == 0) 1224 return (EBADF); 1225 1226 /* If the ioctl happens here, the parent is us. */ 1227 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1228 sizeof(dkw->dkw_parent)); 1229 return (dkwedge_del(dkw)); 1230 } 1231 1232 case DIOCLWEDGES: 1233 { 1234 struct dkwedge_list *dkwl = (void *) addr; 1235 1236 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1237 } 1238 1239 case DIOCGSTRATEGY: 1240 { 1241 struct disk_strategy *dks = addr; 1242 1243 s = splbio(); 1244 strlcpy(dks->dks_name, bufq_getstrategyname(sd->buf_queue), 1245 sizeof(dks->dks_name)); 1246 splx(s); 1247 dks->dks_paramlen = 0; 1248 1249 return 0; 1250 } 1251 1252 case DIOCSSTRATEGY: 1253 { 1254 struct disk_strategy *dks = addr; 1255 struct bufq_state *new; 1256 struct bufq_state *old; 1257 1258 if ((flag & FWRITE) == 0) { 1259 return EBADF; 1260 } 1261 1262 if (dks->dks_param != NULL) { 1263 return EINVAL; 1264 } 1265 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1266 error = bufq_alloc(&new, dks->dks_name, 1267 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1268 if (error) { 1269 return error; 1270 } 1271 s = splbio(); 1272 old = sd->buf_queue; 1273 bufq_move(new, old); 1274 sd->buf_queue = new; 1275 splx(s); 1276 bufq_free(old); 1277 1278 return 0; 1279 } 1280 1281 default: 1282 if (part != RAW_PART) 1283 return (ENOTTY); 1284 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1285 } 1286 1287 #ifdef DIAGNOSTIC 1288 panic("sdioctl: impossible"); 1289 #endif 1290 } 1291 1292 static void 1293 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1294 { 1295 1296 memset(lp, 0, sizeof(struct disklabel)); 1297 1298 lp->d_secsize = sd->params.blksize; 1299 lp->d_ntracks = sd->params.heads; 1300 lp->d_nsectors = sd->params.sectors; 1301 lp->d_ncylinders = sd->params.cyls; 1302 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1303 1304 switch (scsipi_periph_bustype(sd->sc_periph)) { 1305 case SCSIPI_BUSTYPE_SCSI: 1306 lp->d_type = DTYPE_SCSI; 1307 break; 1308 case SCSIPI_BUSTYPE_ATAPI: 1309 lp->d_type = DTYPE_ATAPI; 1310 break; 1311 } 1312 /* 1313 * XXX 1314 * We could probe the mode pages to figure out what kind of disc it is. 1315 * Is this worthwhile? 1316 */ 1317 strncpy(lp->d_typename, sd->name, 16); 1318 strncpy(lp->d_packname, "fictitious", 16); 1319 lp->d_secperunit = sd->params.disksize; 1320 lp->d_rpm = sd->params.rot_rate; 1321 lp->d_interleave = 1; 1322 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1323 D_REMOVABLE : 0; 1324 1325 lp->d_partitions[RAW_PART].p_offset = 0; 1326 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1327 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1328 lp->d_npartitions = RAW_PART + 1; 1329 1330 lp->d_magic = DISKMAGIC; 1331 lp->d_magic2 = DISKMAGIC; 1332 lp->d_checksum = dkcksum(lp); 1333 } 1334 1335 1336 /* 1337 * Load the label information on the named device 1338 */ 1339 static int 1340 sdgetdisklabel(struct sd_softc *sd) 1341 { 1342 struct disklabel *lp = sd->sc_dk.dk_label; 1343 const char *errstring; 1344 1345 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1346 1347 sdgetdefaultlabel(sd, lp); 1348 1349 if (lp->d_secpercyl == 0) { 1350 lp->d_secpercyl = 100; 1351 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1352 } 1353 1354 /* 1355 * Call the generic disklabel extraction routine 1356 */ 1357 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1358 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1359 if (errstring) { 1360 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1361 return EIO; 1362 } 1363 return 0; 1364 } 1365 1366 static bool 1367 sd_shutdown(device_t self, int how) 1368 { 1369 struct sd_softc *sd = device_private(self); 1370 1371 /* 1372 * If the disk cache needs to be flushed, and the disk supports 1373 * it, flush it. We're cold at this point, so we poll for 1374 * completion. 1375 */ 1376 if ((sd->flags & SDF_DIRTY) != 0) { 1377 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1378 aprint_error_dev(sd->sc_dev, 1379 "cache synchronization failed\n"); 1380 sd->flags &= ~SDF_FLUSHING; 1381 } else 1382 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1383 } 1384 return true; 1385 } 1386 1387 static bool 1388 sd_suspend(device_t dv, const pmf_qual_t *qual) 1389 { 1390 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1391 } 1392 1393 /* 1394 * Check Errors 1395 */ 1396 static int 1397 sd_interpret_sense(struct scsipi_xfer *xs) 1398 { 1399 struct scsipi_periph *periph = xs->xs_periph; 1400 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1401 struct sd_softc *sd = device_private(periph->periph_dev); 1402 int s, error, retval = EJUSTRETURN; 1403 1404 /* 1405 * If the periph is already recovering, just do the normal 1406 * error processing. 1407 */ 1408 if (periph->periph_flags & PERIPH_RECOVERING) 1409 return (retval); 1410 1411 /* 1412 * Ignore errors from accessing illegal fields (e.g. trying to 1413 * lock the door of a digicam, which doesn't have a door that 1414 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1415 */ 1416 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1417 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1418 sense->asc == 0x24 && 1419 sense->ascq == 0x00) { /* Illegal field in CDB */ 1420 if (!(xs->xs_control & XS_CTL_SILENT)) { 1421 scsipi_printaddr(periph); 1422 printf("no door lock\n"); 1423 } 1424 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1425 return (retval); 1426 } 1427 1428 1429 1430 /* 1431 * If the device is not open yet, let the generic code handle it. 1432 */ 1433 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1434 return (retval); 1435 1436 /* 1437 * If it isn't a extended or extended/deferred error, let 1438 * the generic code handle it. 1439 */ 1440 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1441 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1442 return (retval); 1443 1444 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1445 sense->asc == 0x4) { 1446 if (sense->ascq == 0x01) { 1447 /* 1448 * Unit In The Process Of Becoming Ready. 1449 */ 1450 printf("%s: waiting for pack to spin up...\n", 1451 device_xname(sd->sc_dev)); 1452 if (!callout_pending(&periph->periph_callout)) 1453 scsipi_periph_freeze(periph, 1); 1454 callout_reset(&periph->periph_callout, 1455 5 * hz, scsipi_periph_timed_thaw, periph); 1456 retval = ERESTART; 1457 } else if (sense->ascq == 0x02) { 1458 printf("%s: pack is stopped, restarting...\n", 1459 device_xname(sd->sc_dev)); 1460 s = splbio(); 1461 periph->periph_flags |= PERIPH_RECOVERING; 1462 splx(s); 1463 error = scsipi_start(periph, SSS_START, 1464 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1465 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1466 if (error) { 1467 aprint_error_dev(sd->sc_dev, 1468 "unable to restart pack\n"); 1469 retval = error; 1470 } else 1471 retval = ERESTART; 1472 s = splbio(); 1473 periph->periph_flags &= ~PERIPH_RECOVERING; 1474 splx(s); 1475 } 1476 } 1477 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1478 sense->asc == 0x31 && 1479 sense->ascq == 0x00) { /* maybe for any asq ? */ 1480 /* Medium Format Corrupted */ 1481 retval = EFTYPE; 1482 } 1483 return (retval); 1484 } 1485 1486 1487 static int 1488 sdsize(dev_t dev) 1489 { 1490 struct sd_softc *sd; 1491 int part, unit, omask; 1492 int size; 1493 1494 unit = SDUNIT(dev); 1495 sd = device_lookup_private(&sd_cd, unit); 1496 if (sd == NULL) 1497 return (-1); 1498 1499 if (!device_is_active(sd->sc_dev)) 1500 return (-1); 1501 1502 part = SDPART(dev); 1503 omask = sd->sc_dk.dk_openmask & (1 << part); 1504 1505 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1506 return (-1); 1507 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1508 size = -1; 1509 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1510 size = -1; 1511 else 1512 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1513 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1514 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1515 return (-1); 1516 return (size); 1517 } 1518 1519 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1520 static struct scsipi_xfer sx; 1521 static int sddoingadump; 1522 1523 /* 1524 * dump all of physical memory into the partition specified, starting 1525 * at offset 'dumplo' into the partition. 1526 */ 1527 static int 1528 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1529 { 1530 struct sd_softc *sd; /* disk unit to do the I/O */ 1531 struct disklabel *lp; /* disk's disklabel */ 1532 int unit, part; 1533 int sectorsize; /* size of a disk sector */ 1534 int nsects; /* number of sectors in partition */ 1535 int sectoff; /* sector offset of partition */ 1536 int totwrt; /* total number of sectors left to write */ 1537 int nwrt; /* current number of sectors to write */ 1538 struct scsipi_rw_10 cmd; /* write command */ 1539 struct scsipi_xfer *xs; /* ... convenience */ 1540 struct scsipi_periph *periph; 1541 struct scsipi_channel *chan; 1542 1543 /* Check if recursive dump; if so, punt. */ 1544 if (sddoingadump) 1545 return (EFAULT); 1546 1547 /* Mark as active early. */ 1548 sddoingadump = 1; 1549 1550 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1551 part = SDPART(dev); 1552 1553 /* Check for acceptable drive number. */ 1554 sd = device_lookup_private(&sd_cd, unit); 1555 if (sd == NULL) 1556 return (ENXIO); 1557 1558 if (!device_is_active(sd->sc_dev)) 1559 return (ENODEV); 1560 1561 periph = sd->sc_periph; 1562 chan = periph->periph_channel; 1563 1564 /* Make sure it was initialized. */ 1565 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1566 return (ENXIO); 1567 1568 /* Convert to disk sectors. Request must be a multiple of size. */ 1569 lp = sd->sc_dk.dk_label; 1570 sectorsize = lp->d_secsize; 1571 if ((size % sectorsize) != 0) 1572 return (EFAULT); 1573 totwrt = size / sectorsize; 1574 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1575 1576 nsects = lp->d_partitions[part].p_size; 1577 sectoff = lp->d_partitions[part].p_offset; 1578 1579 /* Check transfer bounds against partition size. */ 1580 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1581 return (EINVAL); 1582 1583 /* Offset block number to start of partition. */ 1584 blkno += sectoff; 1585 1586 xs = &sx; 1587 1588 while (totwrt > 0) { 1589 nwrt = totwrt; /* XXX */ 1590 #ifndef SD_DUMP_NOT_TRUSTED 1591 /* 1592 * Fill out the scsi command 1593 */ 1594 memset(&cmd, 0, sizeof(cmd)); 1595 cmd.opcode = WRITE_10; 1596 _lto4b(blkno, cmd.addr); 1597 _lto2b(nwrt, cmd.length); 1598 /* 1599 * Fill out the scsipi_xfer structure 1600 * Note: we cannot sleep as we may be an interrupt 1601 * don't use scsipi_command() as it may want to wait 1602 * for an xs. 1603 */ 1604 memset(xs, 0, sizeof(sx)); 1605 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1606 XS_CTL_DATA_OUT; 1607 xs->xs_status = 0; 1608 xs->xs_periph = periph; 1609 xs->xs_retries = SDRETRIES; 1610 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1611 xs->cmd = (struct scsipi_generic *)&cmd; 1612 xs->cmdlen = sizeof(cmd); 1613 xs->resid = nwrt * sectorsize; 1614 xs->error = XS_NOERROR; 1615 xs->bp = 0; 1616 xs->data = va; 1617 xs->datalen = nwrt * sectorsize; 1618 callout_init(&xs->xs_callout, 0); 1619 1620 /* 1621 * Pass all this info to the scsi driver. 1622 */ 1623 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1624 if ((xs->xs_status & XS_STS_DONE) == 0 || 1625 xs->error != XS_NOERROR) 1626 return (EIO); 1627 #else /* SD_DUMP_NOT_TRUSTED */ 1628 /* Let's just talk about this first... */ 1629 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1630 delay(500 * 1000); /* half a second */ 1631 #endif /* SD_DUMP_NOT_TRUSTED */ 1632 1633 /* update block count */ 1634 totwrt -= nwrt; 1635 blkno += nwrt; 1636 va = (char *)va + sectorsize * nwrt; 1637 } 1638 sddoingadump = 0; 1639 return (0); 1640 } 1641 1642 static int 1643 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1644 int page, int flags, int *big) 1645 { 1646 1647 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1648 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1649 *big = 1; 1650 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1651 size + sizeof(struct scsi_mode_parameter_header_10), 1652 flags, SDRETRIES, 6000); 1653 } else { 1654 *big = 0; 1655 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1656 size + sizeof(struct scsi_mode_parameter_header_6), 1657 flags, SDRETRIES, 6000); 1658 } 1659 } 1660 1661 static int 1662 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1663 int flags, int big) 1664 { 1665 1666 if (big) { 1667 struct scsi_mode_parameter_header_10 *header = sense; 1668 1669 _lto2b(0, header->data_length); 1670 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1671 size + sizeof(struct scsi_mode_parameter_header_10), 1672 flags, SDRETRIES, 6000); 1673 } else { 1674 struct scsi_mode_parameter_header_6 *header = sense; 1675 1676 header->data_length = 0; 1677 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1678 size + sizeof(struct scsi_mode_parameter_header_6), 1679 flags, SDRETRIES, 6000); 1680 } 1681 } 1682 1683 /* 1684 * sd_validate_blksize: 1685 * 1686 * Validate the block size. Print error if periph is specified, 1687 */ 1688 static int 1689 sd_validate_blksize(struct scsipi_periph *periph, int len) 1690 { 1691 1692 switch (len) { 1693 case 256: 1694 case 512: 1695 case 1024: 1696 case 2048: 1697 case 4096: 1698 return 1; 1699 } 1700 1701 if (periph) { 1702 scsipi_printaddr(periph); 1703 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1704 (len ^ (1 << (ffs(len) - 1))) ? 1705 "preposterous" : "unsupported", 1706 len, SD_DEFAULT_BLKSIZE); 1707 } 1708 1709 return 0; 1710 } 1711 1712 /* 1713 * sd_read_capacity: 1714 * 1715 * Find out from the device what its capacity is. 1716 */ 1717 static u_int64_t 1718 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1719 { 1720 union { 1721 struct scsipi_read_capacity_10 cmd; 1722 struct scsipi_read_capacity_16 cmd16; 1723 } cmd; 1724 union { 1725 struct scsipi_read_capacity_10_data data; 1726 struct scsipi_read_capacity_16_data data16; 1727 } *datap; 1728 uint64_t rv; 1729 1730 memset(&cmd, 0, sizeof(cmd)); 1731 cmd.cmd.opcode = READ_CAPACITY_10; 1732 1733 /* 1734 * Don't allocate data buffer on stack; 1735 * The lower driver layer might use the same stack and 1736 * if it uses region which is in the same cacheline, 1737 * cache flush ops against the data buffer won't work properly. 1738 */ 1739 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1740 if (datap == NULL) 1741 return 0; 1742 1743 /* 1744 * If the command works, interpret the result as a 4 byte 1745 * number of blocks 1746 */ 1747 rv = 0; 1748 memset(datap, 0, sizeof(datap->data)); 1749 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1750 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1751 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1752 goto out; 1753 1754 if (_4btol(datap->data.addr) != 0xffffffff) { 1755 *blksize = _4btol(datap->data.length); 1756 rv = _4btol(datap->data.addr) + 1; 1757 goto out; 1758 } 1759 1760 /* 1761 * Device is larger than can be reflected by READ CAPACITY (10). 1762 * Try READ CAPACITY (16). 1763 */ 1764 1765 memset(&cmd, 0, sizeof(cmd)); 1766 cmd.cmd16.opcode = READ_CAPACITY_16; 1767 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1768 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1769 1770 memset(datap, 0, sizeof(datap->data16)); 1771 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1772 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1773 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1774 goto out; 1775 1776 *blksize = _4btol(datap->data16.length); 1777 rv = _8btol(datap->data16.addr) + 1; 1778 1779 out: 1780 free(datap, M_TEMP); 1781 return rv; 1782 } 1783 1784 static int 1785 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1786 { 1787 struct { 1788 struct scsi_mode_parameter_header_6 header; 1789 /* no block descriptor */ 1790 u_int8_t pg_code; /* page code (should be 6) */ 1791 u_int8_t pg_length; /* page length (should be 11) */ 1792 u_int8_t wcd; /* bit0: cache disable */ 1793 u_int8_t lbs[2]; /* logical block size */ 1794 u_int8_t size[5]; /* number of log. blocks */ 1795 u_int8_t pp; /* power/performance */ 1796 u_int8_t flags; 1797 u_int8_t resvd; 1798 } scsipi_sense; 1799 u_int64_t blocks; 1800 int error, blksize; 1801 1802 /* 1803 * sd_read_capacity (ie "read capacity") and mode sense page 6 1804 * give the same information. Do both for now, and check 1805 * for consistency. 1806 * XXX probably differs for removable media 1807 */ 1808 dp->blksize = SD_DEFAULT_BLKSIZE; 1809 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1810 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1811 1812 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1813 &scsipi_sense.header, sizeof(scsipi_sense), 1814 flags, SDRETRIES, 6000); 1815 1816 if (error != 0) 1817 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1818 1819 dp->blksize = blksize; 1820 if (!sd_validate_blksize(NULL, dp->blksize)) 1821 dp->blksize = _2btol(scsipi_sense.lbs); 1822 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1823 dp->blksize = SD_DEFAULT_BLKSIZE; 1824 1825 /* 1826 * Create a pseudo-geometry. 1827 */ 1828 dp->heads = 64; 1829 dp->sectors = 32; 1830 dp->cyls = blocks / (dp->heads * dp->sectors); 1831 dp->disksize = _5btol(scsipi_sense.size); 1832 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1833 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1834 (unsigned long long)dp->disksize, 1835 (unsigned long long)blocks); 1836 dp->disksize = blocks; 1837 } 1838 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1839 1840 return (SDGP_RESULT_OK); 1841 } 1842 1843 /* 1844 * Get the scsi driver to send a full inquiry to the * device and use the 1845 * results to fill out the disk parameter structure. 1846 */ 1847 static int 1848 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1849 { 1850 u_int64_t blocks; 1851 int error, blksize; 1852 #if 0 1853 int i; 1854 u_int8_t *p; 1855 #endif 1856 1857 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1858 flags); 1859 if (blocks == 0) { 1860 struct scsipi_read_format_capacities cmd; 1861 struct { 1862 struct scsipi_capacity_list_header header; 1863 struct scsipi_capacity_descriptor desc; 1864 } __packed data; 1865 1866 memset(&cmd, 0, sizeof(cmd)); 1867 memset(&data, 0, sizeof(data)); 1868 cmd.opcode = READ_FORMAT_CAPACITIES; 1869 _lto2b(sizeof(data), cmd.length); 1870 1871 error = scsipi_command(sd->sc_periph, 1872 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1873 SDRETRIES, 20000, NULL, 1874 flags | XS_CTL_DATA_IN); 1875 if (error == EFTYPE) { 1876 /* Medium Format Corrupted, handle as not formatted */ 1877 return (SDGP_RESULT_UNFORMATTED); 1878 } 1879 if (error || data.header.length == 0) 1880 return (SDGP_RESULT_OFFLINE); 1881 1882 #if 0 1883 printf("rfc: length=%d\n", data.header.length); 1884 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"); 1885 #endif 1886 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1887 case SCSIPI_CAP_DESC_CODE_RESERVED: 1888 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1889 break; 1890 1891 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1892 return (SDGP_RESULT_UNFORMATTED); 1893 1894 case SCSIPI_CAP_DESC_CODE_NONE: 1895 return (SDGP_RESULT_OFFLINE); 1896 } 1897 1898 dp->disksize = blocks = _4btol(data.desc.nblks); 1899 if (blocks == 0) 1900 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1901 1902 blksize = _3btol(data.desc.blklen); 1903 1904 } else if (!sd_validate_blksize(NULL, blksize)) { 1905 struct sd_mode_sense_data scsipi_sense; 1906 int big, bsize; 1907 struct scsi_general_block_descriptor *bdesc; 1908 1909 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1910 error = sd_mode_sense(sd, 0, &scsipi_sense, 1911 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1912 if (!error) { 1913 if (big) { 1914 bdesc = (void *)(&scsipi_sense.header.big + 1); 1915 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1916 } else { 1917 bdesc = (void *)(&scsipi_sense.header.small + 1); 1918 bsize = scsipi_sense.header.small.blk_desc_len; 1919 } 1920 1921 #if 0 1922 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1923 printf("page 0 bsize=%d\n", bsize); 1924 printf("page 0 ok\n"); 1925 #endif 1926 1927 if (bsize >= 8) { 1928 blksize = _3btol(bdesc->blklen); 1929 } 1930 } 1931 } 1932 1933 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1934 blksize = SD_DEFAULT_BLKSIZE; 1935 1936 dp->blksize = blksize; 1937 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1938 return (0); 1939 } 1940 1941 static int 1942 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1943 { 1944 struct sd_mode_sense_data scsipi_sense; 1945 int error; 1946 int big, byte2; 1947 size_t poffset; 1948 union scsi_disk_pages *pages; 1949 1950 byte2 = SMS_DBD; 1951 again: 1952 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1953 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1954 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1955 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1956 flags | XS_CTL_SILENT, &big); 1957 if (error) { 1958 if (byte2 == SMS_DBD) { 1959 /* No result; try once more with DBD off */ 1960 byte2 = 0; 1961 goto again; 1962 } 1963 return (error); 1964 } 1965 1966 if (big) { 1967 poffset = sizeof scsipi_sense.header.big; 1968 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1969 } else { 1970 poffset = sizeof scsipi_sense.header.small; 1971 poffset += scsipi_sense.header.small.blk_desc_len; 1972 } 1973 1974 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1975 return ERESTART; 1976 1977 pages = (void *)((u_long)&scsipi_sense + poffset); 1978 #if 0 1979 { 1980 size_t i; 1981 u_int8_t *p; 1982 1983 printf("page 4 sense:"); 1984 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1985 i--, p++) 1986 printf(" %02x", *p); 1987 printf("\n"); 1988 printf("page 4 pg_code=%d sense=%p/%p\n", 1989 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1990 } 1991 #endif 1992 1993 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1994 return (ERESTART); 1995 1996 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1997 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1998 _3btol(pages->rigid_geometry.ncyl), 1999 pages->rigid_geometry.nheads, 2000 _2btol(pages->rigid_geometry.st_cyl_wp), 2001 _2btol(pages->rigid_geometry.st_cyl_rwc), 2002 _2btol(pages->rigid_geometry.land_zone))); 2003 2004 /* 2005 * KLUDGE!! (for zone recorded disks) 2006 * give a number of sectors so that sec * trks * cyls 2007 * is <= disk_size 2008 * can lead to wasted space! THINK ABOUT THIS ! 2009 */ 2010 dp->heads = pages->rigid_geometry.nheads; 2011 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 2012 if (dp->heads == 0 || dp->cyls == 0) 2013 return (ERESTART); 2014 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 2015 2016 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2017 if (dp->rot_rate == 0) 2018 dp->rot_rate = 3600; 2019 2020 #if 0 2021 printf("page 4 ok\n"); 2022 #endif 2023 return (0); 2024 } 2025 2026 static int 2027 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 2028 { 2029 struct sd_mode_sense_data scsipi_sense; 2030 int error; 2031 int big, byte2; 2032 size_t poffset; 2033 union scsi_disk_pages *pages; 2034 2035 byte2 = SMS_DBD; 2036 again: 2037 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2038 error = sd_mode_sense(sd, 0, &scsipi_sense, 2039 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2040 sizeof(scsipi_sense.pages.flex_geometry), 5, 2041 flags | XS_CTL_SILENT, &big); 2042 if (error) { 2043 if (byte2 == SMS_DBD) { 2044 /* No result; try once more with DBD off */ 2045 byte2 = 0; 2046 goto again; 2047 } 2048 return (error); 2049 } 2050 2051 if (big) { 2052 poffset = sizeof scsipi_sense.header.big; 2053 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2054 } else { 2055 poffset = sizeof scsipi_sense.header.small; 2056 poffset += scsipi_sense.header.small.blk_desc_len; 2057 } 2058 2059 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2060 return ERESTART; 2061 2062 pages = (void *)((u_long)&scsipi_sense + poffset); 2063 #if 0 2064 { 2065 size_t i; 2066 u_int8_t *p; 2067 2068 printf("page 5 sense:"); 2069 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2070 i--, p++) 2071 printf(" %02x", *p); 2072 printf("\n"); 2073 printf("page 5 pg_code=%d sense=%p/%p\n", 2074 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2075 } 2076 #endif 2077 2078 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2079 return (ERESTART); 2080 2081 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2082 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2083 _3btol(pages->flex_geometry.ncyl), 2084 pages->flex_geometry.nheads, 2085 pages->flex_geometry.ph_sec_tr, 2086 _2btol(pages->flex_geometry.bytes_s))); 2087 2088 dp->heads = pages->flex_geometry.nheads; 2089 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2090 dp->sectors = pages->flex_geometry.ph_sec_tr; 2091 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2092 return (ERESTART); 2093 2094 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2095 if (dp->rot_rate == 0) 2096 dp->rot_rate = 3600; 2097 2098 #if 0 2099 printf("page 5 ok\n"); 2100 #endif 2101 return (0); 2102 } 2103 2104 static int 2105 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2106 { 2107 int error; 2108 2109 /* 2110 * If offline, the SDEV_MEDIA_LOADED flag will be 2111 * cleared by the caller if necessary. 2112 */ 2113 if (sd->type == T_SIMPLE_DIRECT) { 2114 error = sd_get_simplifiedparms(sd, dp, flags); 2115 if (!error) 2116 disk_blocksize(&sd->sc_dk, dp->blksize); 2117 return (error); 2118 } 2119 2120 error = sd_get_capacity(sd, dp, flags); 2121 if (error) 2122 return (error); 2123 2124 disk_blocksize(&sd->sc_dk, dp->blksize); 2125 2126 if (sd->type == T_OPTICAL) 2127 goto page0; 2128 2129 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2130 if (!sd_get_parms_page5(sd, dp, flags) || 2131 !sd_get_parms_page4(sd, dp, flags)) 2132 goto setprops; 2133 } else { 2134 if (!sd_get_parms_page4(sd, dp, flags) || 2135 !sd_get_parms_page5(sd, dp, flags)) 2136 goto setprops; 2137 } 2138 2139 page0: 2140 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2141 /* Try calling driver's method for figuring out geometry. */ 2142 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2143 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2144 (sd->sc_periph, dp, dp->disksize)) { 2145 /* 2146 * Use adaptec standard fictitious geometry 2147 * this depends on which controller (e.g. 1542C is 2148 * different. but we have to put SOMETHING here..) 2149 */ 2150 dp->heads = 64; 2151 dp->sectors = 32; 2152 dp->cyls = dp->disksize / (64 * 32); 2153 } 2154 dp->rot_rate = 3600; 2155 2156 setprops: 2157 sd_set_properties(sd); 2158 2159 return (SDGP_RESULT_OK); 2160 } 2161 2162 static int 2163 sd_flush(struct sd_softc *sd, int flags) 2164 { 2165 struct scsipi_periph *periph = sd->sc_periph; 2166 struct scsi_synchronize_cache_10 cmd; 2167 2168 /* 2169 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2170 * We issue with address 0 length 0, which should be 2171 * interpreted by the device as "all remaining blocks 2172 * starting at address 0". We ignore ILLEGAL REQUEST 2173 * in the event that the command is not supported by 2174 * the device, and poll for completion so that we know 2175 * that the cache has actually been flushed. 2176 * 2177 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2178 * command, as indicated by our quirks flags. 2179 * 2180 * XXX What about older devices? 2181 */ 2182 if (periph->periph_version < 2 || 2183 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2184 return (0); 2185 2186 sd->flags |= SDF_FLUSHING; 2187 memset(&cmd, 0, sizeof(cmd)); 2188 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2189 2190 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2191 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2192 } 2193 2194 static int 2195 sd_getcache(struct sd_softc *sd, int *bitsp) 2196 { 2197 struct scsipi_periph *periph = sd->sc_periph; 2198 struct sd_mode_sense_data scsipi_sense; 2199 int error, bits = 0; 2200 int big; 2201 union scsi_disk_pages *pages; 2202 2203 if (periph->periph_version < 2) 2204 return (EOPNOTSUPP); 2205 2206 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2207 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2208 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2209 if (error) 2210 return (error); 2211 2212 if (big) 2213 pages = (void *)(&scsipi_sense.header.big + 1); 2214 else 2215 pages = (void *)(&scsipi_sense.header.small + 1); 2216 2217 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2218 bits |= DKCACHE_READ; 2219 if (pages->caching_params.flags & CACHING_WCE) 2220 bits |= DKCACHE_WRITE; 2221 if (pages->caching_params.pg_code & PGCODE_PS) 2222 bits |= DKCACHE_SAVE; 2223 2224 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2225 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2226 sizeof(scsipi_sense.pages.caching_params), 2227 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2228 if (error == 0) { 2229 if (big) 2230 pages = (void *)(&scsipi_sense.header.big + 1); 2231 else 2232 pages = (void *)(&scsipi_sense.header.small + 1); 2233 2234 if (pages->caching_params.flags & CACHING_RCD) 2235 bits |= DKCACHE_RCHANGE; 2236 if (pages->caching_params.flags & CACHING_WCE) 2237 bits |= DKCACHE_WCHANGE; 2238 } 2239 2240 *bitsp = bits; 2241 2242 return (0); 2243 } 2244 2245 static int 2246 sd_setcache(struct sd_softc *sd, int bits) 2247 { 2248 struct scsipi_periph *periph = sd->sc_periph; 2249 struct sd_mode_sense_data scsipi_sense; 2250 int error; 2251 uint8_t oflags, byte2 = 0; 2252 int big; 2253 union scsi_disk_pages *pages; 2254 2255 if (periph->periph_version < 2) 2256 return (EOPNOTSUPP); 2257 2258 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2259 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2260 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2261 if (error) 2262 return (error); 2263 2264 if (big) 2265 pages = (void *)(&scsipi_sense.header.big + 1); 2266 else 2267 pages = (void *)(&scsipi_sense.header.small + 1); 2268 2269 oflags = pages->caching_params.flags; 2270 2271 if (bits & DKCACHE_READ) 2272 pages->caching_params.flags &= ~CACHING_RCD; 2273 else 2274 pages->caching_params.flags |= CACHING_RCD; 2275 2276 if (bits & DKCACHE_WRITE) 2277 pages->caching_params.flags |= CACHING_WCE; 2278 else 2279 pages->caching_params.flags &= ~CACHING_WCE; 2280 2281 if (oflags == pages->caching_params.flags) 2282 return (0); 2283 2284 pages->caching_params.pg_code &= PGCODE_MASK; 2285 2286 if (bits & DKCACHE_SAVE) 2287 byte2 |= SMS_SP; 2288 2289 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2290 sizeof(struct scsi_mode_page_header) + 2291 pages->caching_params.pg_length, 0, big)); 2292 } 2293 2294 static void 2295 sd_set_properties(struct sd_softc *sd) 2296 { 2297 prop_dictionary_t disk_info, odisk_info, geom; 2298 2299 disk_info = prop_dictionary_create(); 2300 2301 geom = prop_dictionary_create(); 2302 2303 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2304 sd->params.disksize); 2305 2306 prop_dictionary_set_uint32(geom, "sector-size", 2307 sd->params.blksize); 2308 2309 prop_dictionary_set_uint16(geom, "sectors-per-track", 2310 sd->params.sectors); 2311 2312 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2313 sd->params.heads); 2314 2315 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2316 sd->params.cyls); 2317 2318 prop_dictionary_set(disk_info, "geometry", geom); 2319 prop_object_release(geom); 2320 2321 prop_dictionary_set(device_properties(sd->sc_dev), 2322 "disk-info", disk_info); 2323 2324 /* 2325 * Don't release disk_info here; we keep a reference to it. 2326 * disk_detach() will release it when we go away. 2327 */ 2328 2329 odisk_info = sd->sc_dk.dk_info; 2330 sd->sc_dk.dk_info = disk_info; 2331 if (odisk_info) 2332 prop_object_release(odisk_info); 2333 } 2334