1 /* $NetBSD: sd.c,v 1.316 2015/04/26 15:15:20 mlelstv 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 1.316 2015/04/26 15:15:20 mlelstv 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/rndsource.h> 73 74 #include <dev/scsipi/scsi_spc.h> 75 #include <dev/scsipi/scsipi_all.h> 76 #include <dev/scsipi/scsi_all.h> 77 #include <dev/scsipi/scsipi_disk.h> 78 #include <dev/scsipi/scsi_disk.h> 79 #include <dev/scsipi/scsiconf.h> 80 #include <dev/scsipi/scsipi_base.h> 81 #include <dev/scsipi/sdvar.h> 82 83 #include <prop/proplib.h> 84 85 #define SDUNIT(dev) DISKUNIT(dev) 86 #define SDPART(dev) DISKPART(dev) 87 #define SDMINOR(unit, part) DISKMINOR(unit, part) 88 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 89 90 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 91 92 #define SD_DEFAULT_BLKSIZE 512 93 94 static void sdminphys(struct buf *); 95 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 96 static int sdgetdisklabel(struct sd_softc *); 97 static void sdstart(struct scsipi_periph *); 98 static void sdrestart(void *); 99 static void sddone(struct scsipi_xfer *, int); 100 static bool sd_suspend(device_t, const pmf_qual_t *); 101 static bool sd_shutdown(device_t, int); 102 static int sd_interpret_sense(struct scsipi_xfer *); 103 static int sdlastclose(device_t); 104 105 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 106 int, int *); 107 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 108 int); 109 static int sd_validate_blksize(struct scsipi_periph *, int); 110 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 111 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 112 int); 113 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 114 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 115 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 116 int); 117 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 118 int); 119 120 static int sd_flush(struct sd_softc *, int); 121 static int sd_getcache(struct sd_softc *, int *); 122 static int sd_setcache(struct sd_softc *, int); 123 124 static int sdmatch(device_t, cfdata_t, void *); 125 static void sdattach(device_t, device_t, void *); 126 static int sddetach(device_t, int); 127 static void sd_set_geometry(struct sd_softc *); 128 129 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 130 NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 131 132 extern struct cfdriver sd_cd; 133 134 static const struct scsipi_inquiry_pattern sd_patterns[] = { 135 {T_DIRECT, T_FIXED, 136 "", "", ""}, 137 {T_DIRECT, T_REMOV, 138 "", "", ""}, 139 {T_OPTICAL, T_FIXED, 140 "", "", ""}, 141 {T_OPTICAL, T_REMOV, 142 "", "", ""}, 143 {T_SIMPLE_DIRECT, T_FIXED, 144 "", "", ""}, 145 {T_SIMPLE_DIRECT, T_REMOV, 146 "", "", ""}, 147 }; 148 149 static dev_type_open(sdopen); 150 static dev_type_close(sdclose); 151 static dev_type_read(sdread); 152 static dev_type_write(sdwrite); 153 static dev_type_ioctl(sdioctl); 154 static dev_type_strategy(sdstrategy); 155 static dev_type_dump(sddump); 156 static dev_type_size(sdsize); 157 158 const struct bdevsw sd_bdevsw = { 159 .d_open = sdopen, 160 .d_close = sdclose, 161 .d_strategy = sdstrategy, 162 .d_ioctl = sdioctl, 163 .d_dump = sddump, 164 .d_psize = sdsize, 165 .d_discard = nodiscard, 166 .d_flag = D_DISK 167 }; 168 169 const struct cdevsw sd_cdevsw = { 170 .d_open = sdopen, 171 .d_close = sdclose, 172 .d_read = sdread, 173 .d_write = sdwrite, 174 .d_ioctl = sdioctl, 175 .d_stop = nostop, 176 .d_tty = notty, 177 .d_poll = nopoll, 178 .d_mmap = nommap, 179 .d_kqfilter = nokqfilter, 180 .d_discard = nodiscard, 181 .d_flag = D_DISK 182 }; 183 184 static struct dkdriver sddkdriver = { 185 .d_strategy = sdstrategy, 186 .d_minphys = sdminphys 187 }; 188 189 static const struct scsipi_periphsw sd_switch = { 190 sd_interpret_sense, /* check our error handler first */ 191 sdstart, /* have a queue, served by this */ 192 NULL, /* have no async handler */ 193 sddone, /* deal with stats at interrupt time */ 194 }; 195 196 struct sd_mode_sense_data { 197 /* 198 * XXX 199 * We are not going to parse this as-is -- it just has to be large 200 * enough. 201 */ 202 union { 203 struct scsi_mode_parameter_header_6 small; 204 struct scsi_mode_parameter_header_10 big; 205 } header; 206 struct scsi_general_block_descriptor blk_desc; 207 union scsi_disk_pages pages; 208 }; 209 210 /* 211 * The routine called by the low level scsi routine when it discovers 212 * A device suitable for this driver 213 */ 214 static int 215 sdmatch(device_t parent, cfdata_t match, 216 void *aux) 217 { 218 struct scsipibus_attach_args *sa = aux; 219 int priority; 220 221 (void)scsipi_inqmatch(&sa->sa_inqbuf, 222 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 223 sizeof(sd_patterns[0]), &priority); 224 225 return (priority); 226 } 227 228 /* 229 * Attach routine common to atapi & scsi. 230 */ 231 static void 232 sdattach(device_t parent, device_t self, void *aux) 233 { 234 struct sd_softc *sd = device_private(self); 235 struct scsipibus_attach_args *sa = aux; 236 struct scsipi_periph *periph = sa->sa_periph; 237 int error, result; 238 struct disk_parms *dp = &sd->params; 239 char pbuf[9]; 240 241 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 242 243 sd->sc_dev = self; 244 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 245 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 246 if (sd->type == T_SIMPLE_DIRECT) 247 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 248 249 if (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph)) == 250 SCSIPI_BUSTYPE_SCSI && periph->periph_version == 0) 251 sd->flags |= SDF_ANCIENT; 252 253 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 254 255 callout_init(&sd->sc_callout, 0); 256 257 /* 258 * Store information needed to contact our base driver 259 */ 260 sd->sc_periph = periph; 261 262 periph->periph_dev = sd->sc_dev; 263 periph->periph_switch = &sd_switch; 264 265 /* 266 * Increase our openings to the maximum-per-periph 267 * supported by the adapter. This will either be 268 * clamped down or grown by the adapter if necessary. 269 */ 270 periph->periph_openings = 271 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 272 periph->periph_flags |= PERIPH_GROW_OPENINGS; 273 274 /* 275 * Initialize and attach the disk structure. 276 */ 277 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 278 disk_attach(&sd->sc_dk); 279 280 /* 281 * Use the subdriver to request information regarding the drive. 282 */ 283 aprint_naive("\n"); 284 aprint_normal("\n"); 285 286 if (periph->periph_quirks & PQUIRK_START) 287 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 288 289 error = scsipi_test_unit_ready(periph, 290 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 291 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 292 293 if (error) 294 result = SDGP_RESULT_OFFLINE; 295 else 296 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 297 aprint_normal_dev(sd->sc_dev, ""); 298 switch (result) { 299 case SDGP_RESULT_OK: 300 format_bytes(pbuf, sizeof(pbuf), 301 (u_int64_t)dp->disksize * dp->blksize); 302 aprint_normal( 303 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 304 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 305 (unsigned long long)dp->disksize); 306 break; 307 308 case SDGP_RESULT_OFFLINE: 309 aprint_normal("drive offline"); 310 break; 311 312 case SDGP_RESULT_UNFORMATTED: 313 aprint_normal("unformatted media"); 314 break; 315 316 #ifdef DIAGNOSTIC 317 default: 318 panic("sdattach: unknown result from get_parms"); 319 break; 320 #endif 321 } 322 aprint_normal("\n"); 323 324 /* 325 * Establish a shutdown hook so that we can ensure that 326 * our data has actually made it onto the platter at 327 * shutdown time. Note that this relies on the fact 328 * that the shutdown hooks at the "leaves" of the device tree 329 * are run, first (thus guaranteeing that our hook runs before 330 * our ancestors'). 331 */ 332 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 333 aprint_error_dev(self, "couldn't establish power handler\n"); 334 335 /* 336 * attach the device into the random source list 337 */ 338 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 339 RND_TYPE_DISK, RND_FLAG_DEFAULT); 340 341 /* Discover wedges on this disk. */ 342 dkwedge_discover(&sd->sc_dk); 343 344 /* 345 * Disk insertion and removal times can be a useful source 346 * of entropy, though the estimator should never _count_ 347 * these bits, on insertion, because the deltas to the 348 * nonexistent) previous event should never allow it. 349 */ 350 rnd_add_uint32(&sd->rnd_source, 0); 351 } 352 353 static int 354 sddetach(device_t self, int flags) 355 { 356 struct sd_softc *sd = device_private(self); 357 int s, bmaj, cmaj, i, mn, rc; 358 359 rnd_add_uint32(&sd->rnd_source, 0); 360 361 if ((rc = disk_begindetach(&sd->sc_dk, sdlastclose, self, flags)) != 0) 362 return rc; 363 364 /* locate the major number */ 365 bmaj = bdevsw_lookup_major(&sd_bdevsw); 366 cmaj = cdevsw_lookup_major(&sd_cdevsw); 367 368 /* Nuke the vnodes for any open instances */ 369 for (i = 0; i < MAXPARTITIONS; i++) { 370 mn = SDMINOR(device_unit(self), i); 371 vdevgone(bmaj, mn, mn, VBLK); 372 vdevgone(cmaj, mn, mn, VCHR); 373 } 374 375 /* kill any pending restart */ 376 callout_stop(&sd->sc_callout); 377 378 /* Delete all of our wedges. */ 379 dkwedge_delall(&sd->sc_dk); 380 381 s = splbio(); 382 383 /* Kill off any queued buffers. */ 384 bufq_drain(sd->buf_queue); 385 386 bufq_free(sd->buf_queue); 387 388 /* Kill off any pending commands. */ 389 scsipi_kill_pending(sd->sc_periph); 390 391 splx(s); 392 393 /* Detach from the disk list. */ 394 disk_detach(&sd->sc_dk); 395 disk_destroy(&sd->sc_dk); 396 397 callout_destroy(&sd->sc_callout); 398 399 pmf_device_deregister(self); 400 401 /* Unhook the entropy source. */ 402 rnd_detach_source(&sd->rnd_source); 403 404 return (0); 405 } 406 407 /* 408 * open the device. Make sure the partition info is a up-to-date as can be. 409 */ 410 static int 411 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 412 { 413 struct sd_softc *sd; 414 struct scsipi_periph *periph; 415 struct scsipi_adapter *adapt; 416 int unit, part; 417 int error; 418 419 unit = SDUNIT(dev); 420 sd = device_lookup_private(&sd_cd, 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%"PRIx64" (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) || (flag & FSILENT)) 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 && (flag & FSILENT) == 0) 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 * Caller must hold sd->sc_dk.dk_openlock. 594 */ 595 static int 596 sdlastclose(device_t self) 597 { 598 struct sd_softc *sd = device_private(self); 599 struct scsipi_periph *periph = sd->sc_periph; 600 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 601 602 /* 603 * If the disk cache needs flushing, and the disk supports 604 * it, do it now. 605 */ 606 if ((sd->flags & SDF_DIRTY) != 0) { 607 if (sd_flush(sd, 0)) { 608 aprint_error_dev(sd->sc_dev, 609 "cache synchronization failed\n"); 610 sd->flags &= ~SDF_FLUSHING; 611 } else 612 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 613 } 614 615 scsipi_wait_drain(periph); 616 617 if (periph->periph_flags & PERIPH_REMOVABLE) 618 scsipi_prevent(periph, SPAMR_ALLOW, 619 XS_CTL_IGNORE_ILLEGAL_REQUEST | 620 XS_CTL_IGNORE_NOT_READY | 621 XS_CTL_SILENT); 622 periph->periph_flags &= ~PERIPH_OPEN; 623 624 scsipi_wait_drain(periph); 625 626 scsipi_adapter_delref(adapt); 627 628 return 0; 629 } 630 631 /* 632 * close the device.. only called if we are the LAST occurence of an open 633 * device. Convenient now but usually a pain. 634 */ 635 static int 636 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 637 { 638 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 639 int part = SDPART(dev); 640 641 mutex_enter(&sd->sc_dk.dk_openlock); 642 switch (fmt) { 643 case S_IFCHR: 644 sd->sc_dk.dk_copenmask &= ~(1 << part); 645 break; 646 case S_IFBLK: 647 sd->sc_dk.dk_bopenmask &= ~(1 << part); 648 break; 649 } 650 sd->sc_dk.dk_openmask = 651 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 652 653 if (sd->sc_dk.dk_openmask == 0) 654 sdlastclose(sd->sc_dev); 655 656 mutex_exit(&sd->sc_dk.dk_openlock); 657 return (0); 658 } 659 660 /* 661 * Actually translate the requested transfer into one the physical driver 662 * can understand. The transfer is described by a buf and will include 663 * only one physical transfer. 664 */ 665 static void 666 sdstrategy(struct buf *bp) 667 { 668 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 669 struct scsipi_periph *periph = sd->sc_periph; 670 struct disklabel *lp; 671 daddr_t blkno; 672 int s; 673 bool sector_aligned; 674 675 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 676 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 677 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 678 /* 679 * If the device has been made invalid, error out 680 */ 681 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 682 !device_is_active(sd->sc_dev)) { 683 if (periph->periph_flags & PERIPH_OPEN) 684 bp->b_error = EIO; 685 else 686 bp->b_error = ENODEV; 687 goto done; 688 } 689 690 lp = sd->sc_dk.dk_label; 691 692 /* 693 * The transfer must be a whole number of blocks, offset must not be 694 * negative. 695 */ 696 if (lp->d_secsize == DEV_BSIZE) { 697 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 698 } else { 699 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 700 } 701 if (!sector_aligned || bp->b_blkno < 0) { 702 bp->b_error = EINVAL; 703 goto done; 704 } 705 /* 706 * If it's a null transfer, return immediatly 707 */ 708 if (bp->b_bcount == 0) 709 goto done; 710 711 /* 712 * Do bounds checking, adjust transfer. if error, process. 713 * If end of partition, just return. 714 */ 715 if (SDPART(bp->b_dev) == RAW_PART) { 716 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 717 sd->params.disksize512) <= 0) 718 goto done; 719 } else { 720 if (bounds_check_with_label(&sd->sc_dk, bp, 721 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 722 goto done; 723 } 724 725 /* 726 * Now convert the block number to absolute and put it in 727 * terms of the device's logical block size. 728 */ 729 if (lp->d_secsize == DEV_BSIZE) 730 blkno = bp->b_blkno; 731 else if (lp->d_secsize > DEV_BSIZE) 732 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 733 else 734 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 735 736 if (SDPART(bp->b_dev) != RAW_PART) 737 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 738 739 bp->b_rawblkno = blkno; 740 741 s = splbio(); 742 743 /* 744 * Place it in the queue of disk activities for this disk. 745 * 746 * XXX Only do disksort() if the current operating mode does not 747 * XXX include tagged queueing. 748 */ 749 bufq_put(sd->buf_queue, bp); 750 751 /* 752 * Tell the device to get going on the transfer if it's 753 * not doing anything, otherwise just wait for completion 754 */ 755 sdstart(sd->sc_periph); 756 757 splx(s); 758 return; 759 760 done: 761 /* 762 * Correctly set the buf to indicate a completed xfer 763 */ 764 bp->b_resid = bp->b_bcount; 765 biodone(bp); 766 } 767 768 /* 769 * sdstart looks to see if there is a buf waiting for the device 770 * and that the device is not already busy. If both are true, 771 * It dequeues the buf and creates a scsi command to perform the 772 * transfer in the buf. The transfer request will call scsipi_done 773 * on completion, which will in turn call this routine again 774 * so that the next queued transfer is performed. 775 * The bufs are queued by the strategy routine (sdstrategy) 776 * 777 * This routine is also called after other non-queued requests 778 * have been made of the scsi driver, to ensure that the queue 779 * continues to be drained. 780 * 781 * must be called at the correct (highish) spl level 782 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 783 */ 784 static void 785 sdstart(struct scsipi_periph *periph) 786 { 787 struct sd_softc *sd = device_private(periph->periph_dev); 788 struct disklabel *lp = sd->sc_dk.dk_label; 789 struct buf *bp = 0; 790 struct scsipi_rw_16 cmd16; 791 struct scsipi_rw_10 cmd_big; 792 struct scsi_rw_6 cmd_small; 793 struct scsipi_generic *cmdp; 794 struct scsipi_xfer *xs; 795 int nblks, cmdlen, error __diagused, flags; 796 797 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 798 /* 799 * Check if the device has room for another command 800 */ 801 while (periph->periph_active < periph->periph_openings) { 802 /* 803 * there is excess capacity, but a special waits 804 * It'll need the adapter as soon as we clear out of the 805 * way and let it run (user level wait). 806 */ 807 if (periph->periph_flags & PERIPH_WAITING) { 808 periph->periph_flags &= ~PERIPH_WAITING; 809 wakeup((void *)periph); 810 return; 811 } 812 813 /* 814 * If the device has become invalid, abort all the 815 * reads and writes until all files have been closed and 816 * re-opened 817 */ 818 if (__predict_false( 819 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 820 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 821 bp->b_error = EIO; 822 bp->b_resid = bp->b_bcount; 823 biodone(bp); 824 continue; 825 } else { 826 return; 827 } 828 } 829 830 /* 831 * See if there is a buf with work for us to do.. 832 */ 833 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 834 return; 835 836 /* 837 * We have a buf, now we should make a command. 838 */ 839 840 if (lp->d_secsize == DEV_BSIZE) 841 nblks = bp->b_bcount >> DEV_BSHIFT; 842 else 843 nblks = howmany(bp->b_bcount, lp->d_secsize); 844 845 /* 846 * Fill out the scsi command. Use the smallest CDB possible 847 * (6-byte, 10-byte, or 16-byte). 848 */ 849 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 850 ((nblks & 0xff) == nblks) && 851 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 852 /* 6-byte CDB */ 853 memset(&cmd_small, 0, sizeof(cmd_small)); 854 cmd_small.opcode = (bp->b_flags & B_READ) ? 855 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 856 _lto3b(bp->b_rawblkno, cmd_small.addr); 857 cmd_small.length = nblks & 0xff; 858 cmdlen = sizeof(cmd_small); 859 cmdp = (struct scsipi_generic *)&cmd_small; 860 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 861 /* 10-byte CDB */ 862 memset(&cmd_big, 0, sizeof(cmd_big)); 863 cmd_big.opcode = (bp->b_flags & B_READ) ? 864 READ_10 : WRITE_10; 865 _lto4b(bp->b_rawblkno, cmd_big.addr); 866 _lto2b(nblks, cmd_big.length); 867 cmdlen = sizeof(cmd_big); 868 cmdp = (struct scsipi_generic *)&cmd_big; 869 } else { 870 /* 16-byte CDB */ 871 memset(&cmd16, 0, sizeof(cmd16)); 872 cmd16.opcode = (bp->b_flags & B_READ) ? 873 READ_16 : WRITE_16; 874 _lto8b(bp->b_rawblkno, cmd16.addr); 875 _lto4b(nblks, cmd16.length); 876 cmdlen = sizeof(cmd16); 877 cmdp = (struct scsipi_generic *)&cmd16; 878 } 879 880 /* Instrumentation. */ 881 disk_busy(&sd->sc_dk); 882 883 /* 884 * Mark the disk dirty so that the cache will be 885 * flushed on close. 886 */ 887 if ((bp->b_flags & B_READ) == 0) 888 sd->flags |= SDF_DIRTY; 889 890 /* 891 * Figure out what flags to use. 892 */ 893 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 894 if (bp->b_flags & B_READ) 895 flags |= XS_CTL_DATA_IN; 896 else 897 flags |= XS_CTL_DATA_OUT; 898 899 /* 900 * Call the routine that chats with the adapter. 901 * Note: we cannot sleep as we may be an interrupt 902 */ 903 xs = scsipi_make_xs(periph, cmdp, cmdlen, 904 (u_char *)bp->b_data, bp->b_bcount, 905 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 906 if (__predict_false(xs == NULL)) { 907 /* 908 * out of memory. Keep this buffer in the queue, and 909 * retry later. 910 */ 911 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 912 periph); 913 return; 914 } 915 /* 916 * need to dequeue the buffer before queuing the command, 917 * because cdstart may be called recursively from the 918 * HBA driver 919 */ 920 #ifdef DIAGNOSTIC 921 if (bufq_get(sd->buf_queue) != bp) 922 panic("sdstart(): dequeued wrong buf"); 923 #else 924 bufq_get(sd->buf_queue); 925 #endif 926 error = scsipi_execute_xs(xs); 927 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 928 KASSERT(error == 0); 929 } 930 } 931 932 static void 933 sdrestart(void *v) 934 { 935 int s = splbio(); 936 sdstart((struct scsipi_periph *)v); 937 splx(s); 938 } 939 940 static void 941 sddone(struct scsipi_xfer *xs, int error) 942 { 943 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 944 struct buf *bp = xs->bp; 945 946 if (sd->flags & SDF_FLUSHING) { 947 /* Flush completed, no longer dirty. */ 948 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 949 } 950 951 if (bp) { 952 bp->b_error = error; 953 bp->b_resid = xs->resid; 954 if (error) { 955 /* on a read/write error bp->b_resid is zero, so fix */ 956 bp->b_resid = bp->b_bcount; 957 } 958 959 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 960 (bp->b_flags & B_READ)); 961 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 962 963 biodone(bp); 964 } 965 } 966 967 static void 968 sdminphys(struct buf *bp) 969 { 970 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 971 long xmax; 972 973 /* 974 * If the device is ancient, we want to make sure that 975 * the transfer fits into a 6-byte cdb. 976 * 977 * XXX Note that the SCSI-I spec says that 256-block transfers 978 * are allowed in a 6-byte read/write, and are specified 979 * by settng the "length" to 0. However, we're conservative 980 * here, allowing only 255-block transfers in case an 981 * ancient device gets confused by length == 0. A length of 0 982 * in a 10-byte read/write actually means 0 blocks. 983 */ 984 if ((sd->flags & SDF_ANCIENT) && 985 ((sd->sc_periph->periph_flags & 986 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 987 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 988 989 if (bp->b_bcount > xmax) 990 bp->b_bcount = xmax; 991 } 992 993 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 994 } 995 996 static int 997 sdread(dev_t dev, struct uio *uio, int ioflag) 998 { 999 1000 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 1001 } 1002 1003 static int 1004 sdwrite(dev_t dev, struct uio *uio, int ioflag) 1005 { 1006 1007 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1008 } 1009 1010 /* 1011 * Perform special action on behalf of the user 1012 * Knows about the internals of this device 1013 */ 1014 static int 1015 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1016 { 1017 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 1018 struct scsipi_periph *periph = sd->sc_periph; 1019 int part = SDPART(dev); 1020 int error; 1021 int s; 1022 #ifdef __HAVE_OLD_DISKLABEL 1023 struct disklabel *newlabel = NULL; 1024 #endif 1025 1026 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1027 1028 /* 1029 * If the device is not valid, some IOCTLs can still be 1030 * handled on the raw partition. Check this here. 1031 */ 1032 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1033 switch (cmd) { 1034 case DIOCKLABEL: 1035 case DIOCWLABEL: 1036 case DIOCLOCK: 1037 case DIOCEJECT: 1038 case ODIOCEJECT: 1039 case DIOCGCACHE: 1040 case DIOCSCACHE: 1041 case DIOCGSTRATEGY: 1042 case DIOCSSTRATEGY: 1043 case SCIOCIDENTIFY: 1044 case OSCIOCIDENTIFY: 1045 case SCIOCCOMMAND: 1046 case SCIOCDEBUG: 1047 if (part == RAW_PART) 1048 break; 1049 /* FALLTHROUGH */ 1050 default: 1051 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1052 return (ENODEV); 1053 else 1054 return (EIO); 1055 } 1056 } 1057 1058 error = disk_ioctl(&sd->sc_dk, dev, cmd, addr, flag, l); 1059 if (error != EPASSTHROUGH) 1060 return (error); 1061 1062 error = 0; 1063 switch (cmd) { 1064 case DIOCWDINFO: 1065 case DIOCSDINFO: 1066 #ifdef __HAVE_OLD_DISKLABEL 1067 case ODIOCWDINFO: 1068 case ODIOCSDINFO: 1069 #endif 1070 { 1071 struct disklabel *lp; 1072 1073 if ((flag & FWRITE) == 0) 1074 return (EBADF); 1075 1076 #ifdef __HAVE_OLD_DISKLABEL 1077 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1078 newlabel = malloc(sizeof *newlabel, M_TEMP, 1079 M_WAITOK | M_ZERO); 1080 if (newlabel == NULL) 1081 return EIO; 1082 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1083 lp = newlabel; 1084 } else 1085 #endif 1086 lp = (struct disklabel *)addr; 1087 1088 mutex_enter(&sd->sc_dk.dk_openlock); 1089 sd->flags |= SDF_LABELLING; 1090 1091 error = setdisklabel(sd->sc_dk.dk_label, 1092 lp, /*sd->sc_dk.dk_openmask : */0, 1093 sd->sc_dk.dk_cpulabel); 1094 if (error == 0) { 1095 if (cmd == DIOCWDINFO 1096 #ifdef __HAVE_OLD_DISKLABEL 1097 || cmd == ODIOCWDINFO 1098 #endif 1099 ) 1100 error = writedisklabel(SDLABELDEV(dev), 1101 sdstrategy, sd->sc_dk.dk_label, 1102 sd->sc_dk.dk_cpulabel); 1103 } 1104 1105 sd->flags &= ~SDF_LABELLING; 1106 mutex_exit(&sd->sc_dk.dk_openlock); 1107 #ifdef __HAVE_OLD_DISKLABEL 1108 if (newlabel != NULL) 1109 free(newlabel, M_TEMP); 1110 #endif 1111 return (error); 1112 } 1113 1114 case DIOCKLABEL: 1115 if (*(int *)addr) 1116 periph->periph_flags |= PERIPH_KEEP_LABEL; 1117 else 1118 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1119 return (0); 1120 1121 case DIOCWLABEL: 1122 if ((flag & FWRITE) == 0) 1123 return (EBADF); 1124 if (*(int *)addr) 1125 sd->flags |= SDF_WLABEL; 1126 else 1127 sd->flags &= ~SDF_WLABEL; 1128 return (0); 1129 1130 case DIOCLOCK: 1131 if (periph->periph_flags & PERIPH_REMOVABLE) 1132 return (scsipi_prevent(periph, 1133 (*(int *)addr) ? 1134 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1135 else 1136 return (ENOTTY); 1137 1138 case DIOCEJECT: 1139 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1140 return (ENOTTY); 1141 if (*(int *)addr == 0) { 1142 /* 1143 * Don't force eject: check that we are the only 1144 * partition open. If so, unlock it. 1145 */ 1146 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1147 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1148 sd->sc_dk.dk_openmask) { 1149 error = scsipi_prevent(periph, SPAMR_ALLOW, 1150 XS_CTL_IGNORE_NOT_READY); 1151 if (error) 1152 return (error); 1153 } else { 1154 return (EBUSY); 1155 } 1156 } 1157 /* FALLTHROUGH */ 1158 case ODIOCEJECT: 1159 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1160 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1161 1162 case DIOCGDEFLABEL: 1163 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1164 return (0); 1165 1166 #ifdef __HAVE_OLD_DISKLABEL 1167 case ODIOCGDEFLABEL: 1168 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1169 if (newlabel == NULL) 1170 return EIO; 1171 sdgetdefaultlabel(sd, newlabel); 1172 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1173 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1174 else 1175 error = ENOTTY; 1176 free(newlabel, M_TEMP); 1177 return error; 1178 #endif 1179 1180 case DIOCGCACHE: 1181 return (sd_getcache(sd, (int *) addr)); 1182 1183 case DIOCSCACHE: 1184 if ((flag & FWRITE) == 0) 1185 return (EBADF); 1186 return (sd_setcache(sd, *(int *) addr)); 1187 1188 case DIOCCACHESYNC: 1189 /* 1190 * XXX Do we really need to care about having a writable 1191 * file descriptor here? 1192 */ 1193 if ((flag & FWRITE) == 0) 1194 return (EBADF); 1195 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1196 error = sd_flush(sd, 0); 1197 if (error) 1198 sd->flags &= ~SDF_FLUSHING; 1199 else 1200 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1201 } 1202 return (error); 1203 1204 case DIOCGSTRATEGY: 1205 { 1206 struct disk_strategy *dks = addr; 1207 1208 s = splbio(); 1209 strlcpy(dks->dks_name, bufq_getstrategyname(sd->buf_queue), 1210 sizeof(dks->dks_name)); 1211 splx(s); 1212 dks->dks_paramlen = 0; 1213 1214 return 0; 1215 } 1216 1217 case DIOCSSTRATEGY: 1218 { 1219 struct disk_strategy *dks = addr; 1220 struct bufq_state *new_bufq; 1221 struct bufq_state *old_bufq; 1222 1223 if ((flag & FWRITE) == 0) { 1224 return EBADF; 1225 } 1226 1227 if (dks->dks_param != NULL) { 1228 return EINVAL; 1229 } 1230 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1231 error = bufq_alloc(&new_bufq, dks->dks_name, 1232 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1233 if (error) { 1234 return error; 1235 } 1236 s = splbio(); 1237 old_bufq = sd->buf_queue; 1238 bufq_move(new_bufq, old_bufq); 1239 sd->buf_queue = new_bufq; 1240 splx(s); 1241 bufq_free(old_bufq); 1242 1243 return 0; 1244 } 1245 1246 default: 1247 if (part != RAW_PART) 1248 return (ENOTTY); 1249 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1250 } 1251 1252 #ifdef DIAGNOSTIC 1253 panic("sdioctl: impossible"); 1254 #endif 1255 } 1256 1257 static void 1258 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1259 { 1260 1261 memset(lp, 0, sizeof(struct disklabel)); 1262 1263 lp->d_secsize = sd->params.blksize; 1264 lp->d_ntracks = sd->params.heads; 1265 lp->d_nsectors = sd->params.sectors; 1266 lp->d_ncylinders = sd->params.cyls; 1267 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1268 1269 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sd->sc_periph))) { 1270 case SCSIPI_BUSTYPE_SCSI: 1271 lp->d_type = DKTYPE_SCSI; 1272 break; 1273 case SCSIPI_BUSTYPE_ATAPI: 1274 lp->d_type = DKTYPE_ATAPI; 1275 break; 1276 } 1277 /* 1278 * XXX 1279 * We could probe the mode pages to figure out what kind of disc it is. 1280 * Is this worthwhile? 1281 */ 1282 strncpy(lp->d_typename, sd->name, 16); 1283 strncpy(lp->d_packname, "fictitious", 16); 1284 if (sd->params.disksize > UINT32_MAX) 1285 lp->d_secperunit = UINT32_MAX; 1286 else 1287 lp->d_secperunit = sd->params.disksize; 1288 lp->d_rpm = sd->params.rot_rate; 1289 lp->d_interleave = 1; 1290 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1291 D_REMOVABLE : 0; 1292 1293 lp->d_partitions[RAW_PART].p_offset = 0; 1294 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1295 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1296 lp->d_npartitions = RAW_PART + 1; 1297 1298 lp->d_magic = DISKMAGIC; 1299 lp->d_magic2 = DISKMAGIC; 1300 lp->d_checksum = dkcksum(lp); 1301 } 1302 1303 1304 /* 1305 * Load the label information on the named device 1306 */ 1307 static int 1308 sdgetdisklabel(struct sd_softc *sd) 1309 { 1310 struct disklabel *lp = sd->sc_dk.dk_label; 1311 const char *errstring; 1312 1313 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1314 1315 sdgetdefaultlabel(sd, lp); 1316 1317 if (lp->d_secpercyl == 0) { 1318 lp->d_secpercyl = 100; 1319 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1320 } 1321 1322 /* 1323 * Call the generic disklabel extraction routine 1324 */ 1325 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1326 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1327 if (errstring) { 1328 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1329 return EIO; 1330 } 1331 return 0; 1332 } 1333 1334 static bool 1335 sd_shutdown(device_t self, int how) 1336 { 1337 struct sd_softc *sd = device_private(self); 1338 1339 /* 1340 * If the disk cache needs to be flushed, and the disk supports 1341 * it, flush it. We're cold at this point, so we poll for 1342 * completion. 1343 */ 1344 if ((sd->flags & SDF_DIRTY) != 0) { 1345 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1346 aprint_error_dev(sd->sc_dev, 1347 "cache synchronization failed\n"); 1348 sd->flags &= ~SDF_FLUSHING; 1349 } else 1350 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1351 } 1352 return true; 1353 } 1354 1355 static bool 1356 sd_suspend(device_t dv, const pmf_qual_t *qual) 1357 { 1358 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1359 } 1360 1361 /* 1362 * Check Errors 1363 */ 1364 static int 1365 sd_interpret_sense(struct scsipi_xfer *xs) 1366 { 1367 struct scsipi_periph *periph = xs->xs_periph; 1368 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1369 struct sd_softc *sd = device_private(periph->periph_dev); 1370 int s, error, retval = EJUSTRETURN; 1371 1372 /* 1373 * If the periph is already recovering, just do the normal 1374 * error processing. 1375 */ 1376 if (periph->periph_flags & PERIPH_RECOVERING) 1377 return (retval); 1378 1379 /* 1380 * Ignore errors from accessing illegal fields (e.g. trying to 1381 * lock the door of a digicam, which doesn't have a door that 1382 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1383 */ 1384 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1385 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1386 sense->asc == 0x24 && 1387 sense->ascq == 0x00) { /* Illegal field in CDB */ 1388 if (!(xs->xs_control & XS_CTL_SILENT)) { 1389 scsipi_printaddr(periph); 1390 printf("no door lock\n"); 1391 } 1392 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1393 return (retval); 1394 } 1395 1396 1397 1398 /* 1399 * If the device is not open yet, let the generic code handle it. 1400 */ 1401 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1402 return (retval); 1403 1404 /* 1405 * If it isn't a extended or extended/deferred error, let 1406 * the generic code handle it. 1407 */ 1408 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1409 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1410 return (retval); 1411 1412 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1413 sense->asc == 0x4) { 1414 if (sense->ascq == 0x01) { 1415 /* 1416 * Unit In The Process Of Becoming Ready. 1417 */ 1418 printf("%s: waiting for pack to spin up...\n", 1419 device_xname(sd->sc_dev)); 1420 if (!callout_pending(&periph->periph_callout)) 1421 scsipi_periph_freeze(periph, 1); 1422 callout_reset(&periph->periph_callout, 1423 5 * hz, scsipi_periph_timed_thaw, periph); 1424 retval = ERESTART; 1425 } else if (sense->ascq == 0x02) { 1426 printf("%s: pack is stopped, restarting...\n", 1427 device_xname(sd->sc_dev)); 1428 s = splbio(); 1429 periph->periph_flags |= PERIPH_RECOVERING; 1430 splx(s); 1431 error = scsipi_start(periph, SSS_START, 1432 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1433 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1434 if (error) { 1435 aprint_error_dev(sd->sc_dev, 1436 "unable to restart pack\n"); 1437 retval = error; 1438 } else 1439 retval = ERESTART; 1440 s = splbio(); 1441 periph->periph_flags &= ~PERIPH_RECOVERING; 1442 splx(s); 1443 } 1444 } 1445 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1446 sense->asc == 0x31 && 1447 sense->ascq == 0x00) { /* maybe for any asq ? */ 1448 /* Medium Format Corrupted */ 1449 retval = EFTYPE; 1450 } 1451 return (retval); 1452 } 1453 1454 1455 static int 1456 sdsize(dev_t dev) 1457 { 1458 struct sd_softc *sd; 1459 int part, unit, omask; 1460 int size; 1461 1462 unit = SDUNIT(dev); 1463 sd = device_lookup_private(&sd_cd, unit); 1464 if (sd == NULL) 1465 return (-1); 1466 1467 if (!device_is_active(sd->sc_dev)) 1468 return (-1); 1469 1470 part = SDPART(dev); 1471 omask = sd->sc_dk.dk_openmask & (1 << part); 1472 1473 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1474 return (-1); 1475 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1476 size = -1; 1477 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1478 size = -1; 1479 else 1480 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1481 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1482 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1483 return (-1); 1484 return (size); 1485 } 1486 1487 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1488 static struct scsipi_xfer sx; 1489 static int sddoingadump; 1490 1491 /* 1492 * dump all of physical memory into the partition specified, starting 1493 * at offset 'dumplo' into the partition. 1494 */ 1495 static int 1496 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1497 { 1498 struct sd_softc *sd; /* disk unit to do the I/O */ 1499 struct disklabel *lp; /* disk's disklabel */ 1500 int unit, part; 1501 int sectorsize; /* size of a disk sector */ 1502 int nsects; /* number of sectors in partition */ 1503 int sectoff; /* sector offset of partition */ 1504 int totwrt; /* total number of sectors left to write */ 1505 int nwrt; /* current number of sectors to write */ 1506 struct scsipi_rw_10 cmd; /* write command */ 1507 struct scsipi_xfer *xs; /* ... convenience */ 1508 struct scsipi_periph *periph; 1509 struct scsipi_channel *chan; 1510 1511 /* Check if recursive dump; if so, punt. */ 1512 if (sddoingadump) 1513 return (EFAULT); 1514 1515 /* Mark as active early. */ 1516 sddoingadump = 1; 1517 1518 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1519 part = SDPART(dev); 1520 1521 /* Check for acceptable drive number. */ 1522 sd = device_lookup_private(&sd_cd, unit); 1523 if (sd == NULL) 1524 return (ENXIO); 1525 1526 if (!device_is_active(sd->sc_dev)) 1527 return (ENODEV); 1528 1529 periph = sd->sc_periph; 1530 chan = periph->periph_channel; 1531 1532 /* Make sure it was initialized. */ 1533 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1534 return (ENXIO); 1535 1536 /* Convert to disk sectors. Request must be a multiple of size. */ 1537 lp = sd->sc_dk.dk_label; 1538 sectorsize = lp->d_secsize; 1539 if ((size % sectorsize) != 0) 1540 return (EFAULT); 1541 totwrt = size / sectorsize; 1542 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1543 1544 nsects = lp->d_partitions[part].p_size; 1545 sectoff = lp->d_partitions[part].p_offset; 1546 1547 /* Check transfer bounds against partition size. */ 1548 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1549 return (EINVAL); 1550 1551 /* Offset block number to start of partition. */ 1552 blkno += sectoff; 1553 1554 xs = &sx; 1555 1556 while (totwrt > 0) { 1557 nwrt = totwrt; /* XXX */ 1558 #ifndef SD_DUMP_NOT_TRUSTED 1559 /* 1560 * Fill out the scsi command 1561 */ 1562 memset(&cmd, 0, sizeof(cmd)); 1563 cmd.opcode = WRITE_10; 1564 _lto4b(blkno, cmd.addr); 1565 _lto2b(nwrt, cmd.length); 1566 /* 1567 * Fill out the scsipi_xfer structure 1568 * Note: we cannot sleep as we may be an interrupt 1569 * don't use scsipi_command() as it may want to wait 1570 * for an xs. 1571 */ 1572 memset(xs, 0, sizeof(sx)); 1573 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1574 XS_CTL_DATA_OUT; 1575 xs->xs_status = 0; 1576 xs->xs_periph = periph; 1577 xs->xs_retries = SDRETRIES; 1578 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1579 xs->cmd = (struct scsipi_generic *)&cmd; 1580 xs->cmdlen = sizeof(cmd); 1581 xs->resid = nwrt * sectorsize; 1582 xs->error = XS_NOERROR; 1583 xs->bp = 0; 1584 xs->data = va; 1585 xs->datalen = nwrt * sectorsize; 1586 callout_init(&xs->xs_callout, 0); 1587 1588 /* 1589 * Pass all this info to the scsi driver. 1590 */ 1591 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1592 if ((xs->xs_status & XS_STS_DONE) == 0 || 1593 xs->error != XS_NOERROR) 1594 return (EIO); 1595 #else /* SD_DUMP_NOT_TRUSTED */ 1596 /* Let's just talk about this first... */ 1597 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1598 delay(500 * 1000); /* half a second */ 1599 #endif /* SD_DUMP_NOT_TRUSTED */ 1600 1601 /* update block count */ 1602 totwrt -= nwrt; 1603 blkno += nwrt; 1604 va = (char *)va + sectorsize * nwrt; 1605 } 1606 sddoingadump = 0; 1607 return (0); 1608 } 1609 1610 static int 1611 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1612 int page, int flags, int *big) 1613 { 1614 1615 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1616 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1617 *big = 1; 1618 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1619 size + sizeof(struct scsi_mode_parameter_header_10), 1620 flags, SDRETRIES, 6000); 1621 } else { 1622 *big = 0; 1623 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1624 size + sizeof(struct scsi_mode_parameter_header_6), 1625 flags, SDRETRIES, 6000); 1626 } 1627 } 1628 1629 static int 1630 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1631 int flags, int big) 1632 { 1633 1634 if (big) { 1635 struct scsi_mode_parameter_header_10 *header = sense; 1636 1637 _lto2b(0, header->data_length); 1638 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1639 size + sizeof(struct scsi_mode_parameter_header_10), 1640 flags, SDRETRIES, 6000); 1641 } else { 1642 struct scsi_mode_parameter_header_6 *header = sense; 1643 1644 header->data_length = 0; 1645 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1646 size + sizeof(struct scsi_mode_parameter_header_6), 1647 flags, SDRETRIES, 6000); 1648 } 1649 } 1650 1651 /* 1652 * sd_validate_blksize: 1653 * 1654 * Validate the block size. Print error if periph is specified, 1655 */ 1656 static int 1657 sd_validate_blksize(struct scsipi_periph *periph, int len) 1658 { 1659 1660 switch (len) { 1661 case 256: 1662 case 512: 1663 case 1024: 1664 case 2048: 1665 case 4096: 1666 return 1; 1667 } 1668 1669 if (periph) { 1670 scsipi_printaddr(periph); 1671 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1672 (len ^ (1 << (ffs(len) - 1))) ? 1673 "preposterous" : "unsupported", 1674 len, SD_DEFAULT_BLKSIZE); 1675 } 1676 1677 return 0; 1678 } 1679 1680 /* 1681 * sd_read_capacity: 1682 * 1683 * Find out from the device what its capacity is. 1684 */ 1685 static u_int64_t 1686 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1687 { 1688 union { 1689 struct scsipi_read_capacity_10 cmd; 1690 struct scsipi_read_capacity_16 cmd16; 1691 } cmd; 1692 union { 1693 struct scsipi_read_capacity_10_data data; 1694 struct scsipi_read_capacity_16_data data16; 1695 } *datap; 1696 uint64_t rv; 1697 1698 memset(&cmd, 0, sizeof(cmd)); 1699 cmd.cmd.opcode = READ_CAPACITY_10; 1700 1701 /* 1702 * Don't allocate data buffer on stack; 1703 * The lower driver layer might use the same stack and 1704 * if it uses region which is in the same cacheline, 1705 * cache flush ops against the data buffer won't work properly. 1706 */ 1707 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1708 if (datap == NULL) 1709 return 0; 1710 1711 /* 1712 * If the command works, interpret the result as a 4 byte 1713 * number of blocks 1714 */ 1715 rv = 0; 1716 memset(datap, 0, sizeof(datap->data)); 1717 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1718 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1719 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1720 goto out; 1721 1722 if (_4btol(datap->data.addr) != 0xffffffff) { 1723 *blksize = _4btol(datap->data.length); 1724 rv = _4btol(datap->data.addr) + 1; 1725 goto out; 1726 } 1727 1728 /* 1729 * Device is larger than can be reflected by READ CAPACITY (10). 1730 * Try READ CAPACITY (16). 1731 */ 1732 1733 memset(&cmd, 0, sizeof(cmd)); 1734 cmd.cmd16.opcode = READ_CAPACITY_16; 1735 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1736 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1737 1738 memset(datap, 0, sizeof(datap->data16)); 1739 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1740 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1741 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1742 goto out; 1743 1744 *blksize = _4btol(datap->data16.length); 1745 rv = _8btol(datap->data16.addr) + 1; 1746 1747 out: 1748 free(datap, M_TEMP); 1749 return rv; 1750 } 1751 1752 static int 1753 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1754 { 1755 struct { 1756 struct scsi_mode_parameter_header_6 header; 1757 /* no block descriptor */ 1758 u_int8_t pg_code; /* page code (should be 6) */ 1759 u_int8_t pg_length; /* page length (should be 11) */ 1760 u_int8_t wcd; /* bit0: cache disable */ 1761 u_int8_t lbs[2]; /* logical block size */ 1762 u_int8_t size[5]; /* number of log. blocks */ 1763 u_int8_t pp; /* power/performance */ 1764 u_int8_t flags; 1765 u_int8_t resvd; 1766 } scsipi_sense; 1767 u_int64_t blocks; 1768 int error, blksize; 1769 1770 /* 1771 * sd_read_capacity (ie "read capacity") and mode sense page 6 1772 * give the same information. Do both for now, and check 1773 * for consistency. 1774 * XXX probably differs for removable media 1775 */ 1776 dp->blksize = SD_DEFAULT_BLKSIZE; 1777 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1778 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1779 1780 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1781 &scsipi_sense.header, sizeof(scsipi_sense), 1782 flags, SDRETRIES, 6000); 1783 1784 if (error != 0) 1785 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1786 1787 dp->blksize = blksize; 1788 if (!sd_validate_blksize(NULL, dp->blksize)) 1789 dp->blksize = _2btol(scsipi_sense.lbs); 1790 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1791 dp->blksize = SD_DEFAULT_BLKSIZE; 1792 1793 /* 1794 * Create a pseudo-geometry. 1795 */ 1796 dp->heads = 64; 1797 dp->sectors = 32; 1798 dp->cyls = blocks / (dp->heads * dp->sectors); 1799 dp->disksize = _5btol(scsipi_sense.size); 1800 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1801 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1802 (unsigned long long)dp->disksize, 1803 (unsigned long long)blocks); 1804 dp->disksize = blocks; 1805 } 1806 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1807 1808 return (SDGP_RESULT_OK); 1809 } 1810 1811 /* 1812 * Get the scsi driver to send a full inquiry to the * device and use the 1813 * results to fill out the disk parameter structure. 1814 */ 1815 static int 1816 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1817 { 1818 u_int64_t blocks; 1819 int error, blksize; 1820 #if 0 1821 int i; 1822 u_int8_t *p; 1823 #endif 1824 1825 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1826 flags); 1827 if (blocks == 0) { 1828 struct scsipi_read_format_capacities cmd; 1829 struct { 1830 struct scsipi_capacity_list_header header; 1831 struct scsipi_capacity_descriptor desc; 1832 } __packed data; 1833 1834 memset(&cmd, 0, sizeof(cmd)); 1835 memset(&data, 0, sizeof(data)); 1836 cmd.opcode = READ_FORMAT_CAPACITIES; 1837 _lto2b(sizeof(data), cmd.length); 1838 1839 error = scsipi_command(sd->sc_periph, 1840 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1841 SDRETRIES, 20000, NULL, 1842 flags | XS_CTL_DATA_IN); 1843 if (error == EFTYPE) { 1844 /* Medium Format Corrupted, handle as not formatted */ 1845 return (SDGP_RESULT_UNFORMATTED); 1846 } 1847 if (error || data.header.length == 0) 1848 return (SDGP_RESULT_OFFLINE); 1849 1850 #if 0 1851 printf("rfc: length=%d\n", data.header.length); 1852 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"); 1853 #endif 1854 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1855 case SCSIPI_CAP_DESC_CODE_RESERVED: 1856 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1857 break; 1858 1859 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1860 return (SDGP_RESULT_UNFORMATTED); 1861 1862 case SCSIPI_CAP_DESC_CODE_NONE: 1863 return (SDGP_RESULT_OFFLINE); 1864 } 1865 1866 dp->disksize = blocks = _4btol(data.desc.nblks); 1867 if (blocks == 0) 1868 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1869 1870 blksize = _3btol(data.desc.blklen); 1871 1872 } else if (!sd_validate_blksize(NULL, blksize)) { 1873 struct sd_mode_sense_data scsipi_sense; 1874 int big, bsize; 1875 struct scsi_general_block_descriptor *bdesc; 1876 1877 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1878 error = sd_mode_sense(sd, 0, &scsipi_sense, 1879 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1880 if (!error) { 1881 if (big) { 1882 bdesc = (void *)(&scsipi_sense.header.big + 1); 1883 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1884 } else { 1885 bdesc = (void *)(&scsipi_sense.header.small + 1); 1886 bsize = scsipi_sense.header.small.blk_desc_len; 1887 } 1888 1889 #if 0 1890 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1891 printf("page 0 bsize=%d\n", bsize); 1892 printf("page 0 ok\n"); 1893 #endif 1894 1895 if (bsize >= 8) { 1896 blksize = _3btol(bdesc->blklen); 1897 } 1898 } 1899 } 1900 1901 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1902 blksize = SD_DEFAULT_BLKSIZE; 1903 1904 dp->blksize = blksize; 1905 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1906 return (0); 1907 } 1908 1909 static int 1910 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1911 { 1912 struct sd_mode_sense_data scsipi_sense; 1913 int error; 1914 int big, byte2; 1915 size_t poffset; 1916 union scsi_disk_pages *pages; 1917 1918 byte2 = SMS_DBD; 1919 again: 1920 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1921 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1922 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1923 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1924 flags | XS_CTL_SILENT, &big); 1925 if (error) { 1926 if (byte2 == SMS_DBD) { 1927 /* No result; try once more with DBD off */ 1928 byte2 = 0; 1929 goto again; 1930 } 1931 return (error); 1932 } 1933 1934 if (big) { 1935 poffset = sizeof scsipi_sense.header.big; 1936 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1937 } else { 1938 poffset = sizeof scsipi_sense.header.small; 1939 poffset += scsipi_sense.header.small.blk_desc_len; 1940 } 1941 1942 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1943 return ERESTART; 1944 1945 pages = (void *)((u_long)&scsipi_sense + poffset); 1946 #if 0 1947 { 1948 size_t i; 1949 u_int8_t *p; 1950 1951 printf("page 4 sense:"); 1952 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1953 i--, p++) 1954 printf(" %02x", *p); 1955 printf("\n"); 1956 printf("page 4 pg_code=%d sense=%p/%p\n", 1957 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1958 } 1959 #endif 1960 1961 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1962 return (ERESTART); 1963 1964 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1965 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1966 _3btol(pages->rigid_geometry.ncyl), 1967 pages->rigid_geometry.nheads, 1968 _2btol(pages->rigid_geometry.st_cyl_wp), 1969 _2btol(pages->rigid_geometry.st_cyl_rwc), 1970 _2btol(pages->rigid_geometry.land_zone))); 1971 1972 /* 1973 * KLUDGE!! (for zone recorded disks) 1974 * give a number of sectors so that sec * trks * cyls 1975 * is <= disk_size 1976 * can lead to wasted space! THINK ABOUT THIS ! 1977 */ 1978 dp->heads = pages->rigid_geometry.nheads; 1979 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1980 if (dp->heads == 0 || dp->cyls == 0) 1981 return (ERESTART); 1982 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1983 1984 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1985 if (dp->rot_rate == 0) 1986 dp->rot_rate = 3600; 1987 1988 #if 0 1989 printf("page 4 ok\n"); 1990 #endif 1991 return (0); 1992 } 1993 1994 static int 1995 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1996 { 1997 struct sd_mode_sense_data scsipi_sense; 1998 int error; 1999 int big, byte2; 2000 size_t poffset; 2001 union scsi_disk_pages *pages; 2002 2003 byte2 = SMS_DBD; 2004 again: 2005 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2006 error = sd_mode_sense(sd, 0, &scsipi_sense, 2007 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2008 sizeof(scsipi_sense.pages.flex_geometry), 5, 2009 flags | XS_CTL_SILENT, &big); 2010 if (error) { 2011 if (byte2 == SMS_DBD) { 2012 /* No result; try once more with DBD off */ 2013 byte2 = 0; 2014 goto again; 2015 } 2016 return (error); 2017 } 2018 2019 if (big) { 2020 poffset = sizeof scsipi_sense.header.big; 2021 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2022 } else { 2023 poffset = sizeof scsipi_sense.header.small; 2024 poffset += scsipi_sense.header.small.blk_desc_len; 2025 } 2026 2027 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2028 return ERESTART; 2029 2030 pages = (void *)((u_long)&scsipi_sense + poffset); 2031 #if 0 2032 { 2033 size_t i; 2034 u_int8_t *p; 2035 2036 printf("page 5 sense:"); 2037 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2038 i--, p++) 2039 printf(" %02x", *p); 2040 printf("\n"); 2041 printf("page 5 pg_code=%d sense=%p/%p\n", 2042 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2043 } 2044 #endif 2045 2046 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2047 return (ERESTART); 2048 2049 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2050 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2051 _3btol(pages->flex_geometry.ncyl), 2052 pages->flex_geometry.nheads, 2053 pages->flex_geometry.ph_sec_tr, 2054 _2btol(pages->flex_geometry.bytes_s))); 2055 2056 dp->heads = pages->flex_geometry.nheads; 2057 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2058 dp->sectors = pages->flex_geometry.ph_sec_tr; 2059 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2060 return (ERESTART); 2061 2062 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2063 if (dp->rot_rate == 0) 2064 dp->rot_rate = 3600; 2065 2066 #if 0 2067 printf("page 5 ok\n"); 2068 #endif 2069 return (0); 2070 } 2071 2072 static int 2073 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2074 { 2075 int error; 2076 2077 /* 2078 * If offline, the SDEV_MEDIA_LOADED flag will be 2079 * cleared by the caller if necessary. 2080 */ 2081 if (sd->type == T_SIMPLE_DIRECT) { 2082 error = sd_get_simplifiedparms(sd, dp, flags); 2083 if (!error) 2084 goto setprops; 2085 return (error); 2086 } 2087 2088 error = sd_get_capacity(sd, dp, flags); 2089 if (error) 2090 return (error); 2091 2092 if (sd->type == T_OPTICAL) 2093 goto page0; 2094 2095 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2096 if (!sd_get_parms_page5(sd, dp, flags) || 2097 !sd_get_parms_page4(sd, dp, flags)) 2098 goto setprops; 2099 } else { 2100 if (!sd_get_parms_page4(sd, dp, flags) || 2101 !sd_get_parms_page5(sd, dp, flags)) 2102 goto setprops; 2103 } 2104 2105 page0: 2106 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2107 /* Try calling driver's method for figuring out geometry. */ 2108 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2109 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2110 (sd->sc_periph, dp, dp->disksize)) { 2111 /* 2112 * Use adaptec standard fictitious geometry 2113 * this depends on which controller (e.g. 1542C is 2114 * different. but we have to put SOMETHING here..) 2115 */ 2116 dp->heads = 64; 2117 dp->sectors = 32; 2118 dp->cyls = dp->disksize / (64 * 32); 2119 } 2120 dp->rot_rate = 3600; 2121 2122 setprops: 2123 sd_set_geometry(sd); 2124 2125 return (SDGP_RESULT_OK); 2126 } 2127 2128 static int 2129 sd_flush(struct sd_softc *sd, int flags) 2130 { 2131 struct scsipi_periph *periph = sd->sc_periph; 2132 struct scsi_synchronize_cache_10 cmd; 2133 2134 /* 2135 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2136 * We issue with address 0 length 0, which should be 2137 * interpreted by the device as "all remaining blocks 2138 * starting at address 0". We ignore ILLEGAL REQUEST 2139 * in the event that the command is not supported by 2140 * the device, and poll for completion so that we know 2141 * that the cache has actually been flushed. 2142 * 2143 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2144 * command, as indicated by our quirks flags. 2145 * 2146 * XXX What about older devices? 2147 */ 2148 if (periph->periph_version < 2 || 2149 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2150 return (0); 2151 2152 sd->flags |= SDF_FLUSHING; 2153 memset(&cmd, 0, sizeof(cmd)); 2154 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2155 2156 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2157 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2158 } 2159 2160 static int 2161 sd_getcache(struct sd_softc *sd, int *bitsp) 2162 { 2163 struct scsipi_periph *periph = sd->sc_periph; 2164 struct sd_mode_sense_data scsipi_sense; 2165 int error, bits = 0; 2166 int big; 2167 union scsi_disk_pages *pages; 2168 2169 if (periph->periph_version < 2) 2170 return (EOPNOTSUPP); 2171 2172 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2173 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2174 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2175 if (error) 2176 return (error); 2177 2178 if (big) 2179 pages = (void *)(&scsipi_sense.header.big + 1); 2180 else 2181 pages = (void *)(&scsipi_sense.header.small + 1); 2182 2183 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2184 bits |= DKCACHE_READ; 2185 if (pages->caching_params.flags & CACHING_WCE) 2186 bits |= DKCACHE_WRITE; 2187 if (pages->caching_params.pg_code & PGCODE_PS) 2188 bits |= DKCACHE_SAVE; 2189 2190 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2191 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2192 sizeof(scsipi_sense.pages.caching_params), 2193 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2194 if (error == 0) { 2195 if (big) 2196 pages = (void *)(&scsipi_sense.header.big + 1); 2197 else 2198 pages = (void *)(&scsipi_sense.header.small + 1); 2199 2200 if (pages->caching_params.flags & CACHING_RCD) 2201 bits |= DKCACHE_RCHANGE; 2202 if (pages->caching_params.flags & CACHING_WCE) 2203 bits |= DKCACHE_WCHANGE; 2204 } 2205 2206 *bitsp = bits; 2207 2208 return (0); 2209 } 2210 2211 static int 2212 sd_setcache(struct sd_softc *sd, int bits) 2213 { 2214 struct scsipi_periph *periph = sd->sc_periph; 2215 struct sd_mode_sense_data scsipi_sense; 2216 int error; 2217 uint8_t oflags, byte2 = 0; 2218 int big; 2219 union scsi_disk_pages *pages; 2220 2221 if (periph->periph_version < 2) 2222 return (EOPNOTSUPP); 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), 8, 0, &big); 2227 if (error) 2228 return (error); 2229 2230 if (big) 2231 pages = (void *)(&scsipi_sense.header.big + 1); 2232 else 2233 pages = (void *)(&scsipi_sense.header.small + 1); 2234 2235 oflags = pages->caching_params.flags; 2236 2237 if (bits & DKCACHE_READ) 2238 pages->caching_params.flags &= ~CACHING_RCD; 2239 else 2240 pages->caching_params.flags |= CACHING_RCD; 2241 2242 if (bits & DKCACHE_WRITE) 2243 pages->caching_params.flags |= CACHING_WCE; 2244 else 2245 pages->caching_params.flags &= ~CACHING_WCE; 2246 2247 if (oflags == pages->caching_params.flags) 2248 return (0); 2249 2250 pages->caching_params.pg_code &= PGCODE_MASK; 2251 2252 if (bits & DKCACHE_SAVE) 2253 byte2 |= SMS_SP; 2254 2255 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2256 sizeof(struct scsi_mode_page_header) + 2257 pages->caching_params.pg_length, 0, big)); 2258 } 2259 2260 static void 2261 sd_set_geometry(struct sd_softc *sd) 2262 { 2263 struct disk_geom *dg = &sd->sc_dk.dk_geom; 2264 2265 memset(dg, 0, sizeof(*dg)); 2266 2267 dg->dg_secperunit = sd->params.disksize; 2268 dg->dg_secsize = sd->params.blksize; 2269 dg->dg_nsectors = sd->params.sectors; 2270 dg->dg_ntracks = sd->params.heads; 2271 dg->dg_ncylinders = sd->params.cyls; 2272 2273 disk_set_info(sd->sc_dev, &sd->sc_dk, NULL); 2274 } 2275