1 /* $NetBSD: sd.c,v 1.315 2015/04/13 16:33:25 riastradh 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 1.315 2015/04/13 16:33:25 riastradh 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 = { sdstrategy, sdminphys }; 185 186 static const struct scsipi_periphsw sd_switch = { 187 sd_interpret_sense, /* check our error handler first */ 188 sdstart, /* have a queue, served by this */ 189 NULL, /* have no async handler */ 190 sddone, /* deal with stats at interrupt time */ 191 }; 192 193 struct sd_mode_sense_data { 194 /* 195 * XXX 196 * We are not going to parse this as-is -- it just has to be large 197 * enough. 198 */ 199 union { 200 struct scsi_mode_parameter_header_6 small; 201 struct scsi_mode_parameter_header_10 big; 202 } header; 203 struct scsi_general_block_descriptor blk_desc; 204 union scsi_disk_pages pages; 205 }; 206 207 /* 208 * The routine called by the low level scsi routine when it discovers 209 * A device suitable for this driver 210 */ 211 static int 212 sdmatch(device_t parent, cfdata_t match, 213 void *aux) 214 { 215 struct scsipibus_attach_args *sa = aux; 216 int priority; 217 218 (void)scsipi_inqmatch(&sa->sa_inqbuf, 219 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 220 sizeof(sd_patterns[0]), &priority); 221 222 return (priority); 223 } 224 225 /* 226 * Attach routine common to atapi & scsi. 227 */ 228 static void 229 sdattach(device_t parent, device_t self, void *aux) 230 { 231 struct sd_softc *sd = device_private(self); 232 struct scsipibus_attach_args *sa = aux; 233 struct scsipi_periph *periph = sa->sa_periph; 234 int error, result; 235 struct disk_parms *dp = &sd->params; 236 char pbuf[9]; 237 238 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 239 240 sd->sc_dev = self; 241 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 242 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 243 if (sd->type == T_SIMPLE_DIRECT) 244 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 245 246 if (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph)) == 247 SCSIPI_BUSTYPE_SCSI && periph->periph_version == 0) 248 sd->flags |= SDF_ANCIENT; 249 250 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 251 252 callout_init(&sd->sc_callout, 0); 253 254 /* 255 * Store information needed to contact our base driver 256 */ 257 sd->sc_periph = periph; 258 259 periph->periph_dev = sd->sc_dev; 260 periph->periph_switch = &sd_switch; 261 262 /* 263 * Increase our openings to the maximum-per-periph 264 * supported by the adapter. This will either be 265 * clamped down or grown by the adapter if necessary. 266 */ 267 periph->periph_openings = 268 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 269 periph->periph_flags |= PERIPH_GROW_OPENINGS; 270 271 /* 272 * Initialize and attach the disk structure. 273 */ 274 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 275 disk_attach(&sd->sc_dk); 276 277 /* 278 * Use the subdriver to request information regarding the drive. 279 */ 280 aprint_naive("\n"); 281 aprint_normal("\n"); 282 283 if (periph->periph_quirks & PQUIRK_START) 284 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 285 286 error = scsipi_test_unit_ready(periph, 287 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 288 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 289 290 if (error) 291 result = SDGP_RESULT_OFFLINE; 292 else 293 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 294 aprint_normal_dev(sd->sc_dev, ""); 295 switch (result) { 296 case SDGP_RESULT_OK: 297 format_bytes(pbuf, sizeof(pbuf), 298 (u_int64_t)dp->disksize * dp->blksize); 299 aprint_normal( 300 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 301 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 302 (unsigned long long)dp->disksize); 303 break; 304 305 case SDGP_RESULT_OFFLINE: 306 aprint_normal("drive offline"); 307 break; 308 309 case SDGP_RESULT_UNFORMATTED: 310 aprint_normal("unformatted media"); 311 break; 312 313 #ifdef DIAGNOSTIC 314 default: 315 panic("sdattach: unknown result from get_parms"); 316 break; 317 #endif 318 } 319 aprint_normal("\n"); 320 321 /* 322 * Establish a shutdown hook so that we can ensure that 323 * our data has actually made it onto the platter at 324 * shutdown time. Note that this relies on the fact 325 * that the shutdown hooks at the "leaves" of the device tree 326 * are run, first (thus guaranteeing that our hook runs before 327 * our ancestors'). 328 */ 329 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 330 aprint_error_dev(self, "couldn't establish power handler\n"); 331 332 /* 333 * attach the device into the random source list 334 */ 335 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 336 RND_TYPE_DISK, RND_FLAG_DEFAULT); 337 338 /* Discover wedges on this disk. */ 339 dkwedge_discover(&sd->sc_dk); 340 341 /* 342 * Disk insertion and removal times can be a useful source 343 * of entropy, though the estimator should never _count_ 344 * these bits, on insertion, because the deltas to the 345 * nonexistent) previous event should never allow it. 346 */ 347 rnd_add_uint32(&sd->rnd_source, 0); 348 } 349 350 static int 351 sddetach(device_t self, int flags) 352 { 353 struct sd_softc *sd = device_private(self); 354 int s, bmaj, cmaj, i, mn, rc; 355 356 rnd_add_uint32(&sd->rnd_source, 0); 357 358 if ((rc = disk_begindetach(&sd->sc_dk, sdlastclose, self, flags)) != 0) 359 return rc; 360 361 /* locate the major number */ 362 bmaj = bdevsw_lookup_major(&sd_bdevsw); 363 cmaj = cdevsw_lookup_major(&sd_cdevsw); 364 365 /* Nuke the vnodes for any open instances */ 366 for (i = 0; i < MAXPARTITIONS; i++) { 367 mn = SDMINOR(device_unit(self), i); 368 vdevgone(bmaj, mn, mn, VBLK); 369 vdevgone(cmaj, mn, mn, VCHR); 370 } 371 372 /* kill any pending restart */ 373 callout_stop(&sd->sc_callout); 374 375 /* Delete all of our wedges. */ 376 dkwedge_delall(&sd->sc_dk); 377 378 s = splbio(); 379 380 /* Kill off any queued buffers. */ 381 bufq_drain(sd->buf_queue); 382 383 bufq_free(sd->buf_queue); 384 385 /* Kill off any pending commands. */ 386 scsipi_kill_pending(sd->sc_periph); 387 388 splx(s); 389 390 /* Detach from the disk list. */ 391 disk_detach(&sd->sc_dk); 392 disk_destroy(&sd->sc_dk); 393 394 callout_destroy(&sd->sc_callout); 395 396 pmf_device_deregister(self); 397 398 /* Unhook the entropy source. */ 399 rnd_detach_source(&sd->rnd_source); 400 401 return (0); 402 } 403 404 /* 405 * open the device. Make sure the partition info is a up-to-date as can be. 406 */ 407 static int 408 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 409 { 410 struct sd_softc *sd; 411 struct scsipi_periph *periph; 412 struct scsipi_adapter *adapt; 413 int unit, part; 414 int error; 415 416 unit = SDUNIT(dev); 417 sd = device_lookup_private(&sd_cd, unit); 418 if (sd == NULL) 419 return (ENXIO); 420 421 if (!device_is_active(sd->sc_dev)) 422 return (ENODEV); 423 424 part = SDPART(dev); 425 426 mutex_enter(&sd->sc_dk.dk_openlock); 427 428 /* 429 * If there are wedges, and this is not RAW_PART, then we 430 * need to fail. 431 */ 432 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 433 error = EBUSY; 434 goto bad1; 435 } 436 437 periph = sd->sc_periph; 438 adapt = periph->periph_channel->chan_adapter; 439 440 SC_DEBUG(periph, SCSIPI_DB1, 441 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, 442 sd_cd.cd_ndevs, part)); 443 444 /* 445 * If this is the first open of this device, add a reference 446 * to the adapter. 447 */ 448 if (sd->sc_dk.dk_openmask == 0 && 449 (error = scsipi_adapter_addref(adapt)) != 0) 450 goto bad1; 451 452 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 453 /* 454 * If any partition is open, but the disk has been invalidated, 455 * disallow further opens of non-raw partition 456 */ 457 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 458 (part != RAW_PART || fmt != S_IFCHR)) { 459 error = EIO; 460 goto bad2; 461 } 462 } else { 463 int silent; 464 465 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 466 silent = XS_CTL_SILENT; 467 else 468 silent = 0; 469 470 /* Check that it is still responding and ok. */ 471 error = scsipi_test_unit_ready(periph, 472 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 473 silent); 474 475 /* 476 * Start the pack spinning if necessary. Always allow the 477 * raw parition to be opened, for raw IOCTLs. Data transfers 478 * will check for SDEV_MEDIA_LOADED. 479 */ 480 if (error == EIO) { 481 int error2; 482 483 error2 = scsipi_start(periph, SSS_START, silent); 484 switch (error2) { 485 case 0: 486 error = 0; 487 break; 488 case EIO: 489 case EINVAL: 490 break; 491 default: 492 error = error2; 493 break; 494 } 495 } 496 if (error) { 497 if (silent && (flag & FSILENT) == 0) 498 goto out; 499 goto bad2; 500 } 501 502 periph->periph_flags |= PERIPH_OPEN; 503 504 if (periph->periph_flags & PERIPH_REMOVABLE) { 505 /* Lock the pack in. */ 506 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 507 XS_CTL_IGNORE_ILLEGAL_REQUEST | 508 XS_CTL_IGNORE_MEDIA_CHANGE | 509 XS_CTL_SILENT); 510 if (error) 511 goto bad3; 512 } 513 514 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 515 int param_error; 516 periph->periph_flags |= PERIPH_MEDIA_LOADED; 517 518 /* 519 * Load the physical device parameters. 520 * 521 * Note that if media is present but unformatted, 522 * we allow the open (so that it can be formatted!). 523 * The drive should refuse real I/O, if the media is 524 * unformatted. 525 */ 526 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 527 == SDGP_RESULT_OFFLINE) { 528 error = ENXIO; 529 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 530 goto bad3; 531 } 532 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 533 534 /* Load the partition info if not already loaded. */ 535 if (param_error == 0) { 536 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 537 error = EIO; 538 goto bad3; 539 } 540 SC_DEBUG(periph, SCSIPI_DB3, 541 ("Disklabel loaded ")); 542 } 543 } 544 } 545 546 /* Check that the partition exists. */ 547 if (part != RAW_PART && 548 (part >= sd->sc_dk.dk_label->d_npartitions || 549 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 550 error = ENXIO; 551 goto bad3; 552 } 553 554 out: /* Insure only one open at a time. */ 555 switch (fmt) { 556 case S_IFCHR: 557 sd->sc_dk.dk_copenmask |= (1 << part); 558 break; 559 case S_IFBLK: 560 sd->sc_dk.dk_bopenmask |= (1 << part); 561 break; 562 } 563 sd->sc_dk.dk_openmask = 564 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 565 566 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 567 mutex_exit(&sd->sc_dk.dk_openlock); 568 return (0); 569 570 bad3: 571 if (sd->sc_dk.dk_openmask == 0) { 572 if (periph->periph_flags & PERIPH_REMOVABLE) 573 scsipi_prevent(periph, SPAMR_ALLOW, 574 XS_CTL_IGNORE_ILLEGAL_REQUEST | 575 XS_CTL_IGNORE_MEDIA_CHANGE | 576 XS_CTL_SILENT); 577 periph->periph_flags &= ~PERIPH_OPEN; 578 } 579 580 bad2: 581 if (sd->sc_dk.dk_openmask == 0) 582 scsipi_adapter_delref(adapt); 583 584 bad1: 585 mutex_exit(&sd->sc_dk.dk_openlock); 586 return (error); 587 } 588 589 /* 590 * Caller must hold sd->sc_dk.dk_openlock. 591 */ 592 static int 593 sdlastclose(device_t self) 594 { 595 struct sd_softc *sd = device_private(self); 596 struct scsipi_periph *periph = sd->sc_periph; 597 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 598 599 /* 600 * If the disk cache needs flushing, and the disk supports 601 * it, do it now. 602 */ 603 if ((sd->flags & SDF_DIRTY) != 0) { 604 if (sd_flush(sd, 0)) { 605 aprint_error_dev(sd->sc_dev, 606 "cache synchronization failed\n"); 607 sd->flags &= ~SDF_FLUSHING; 608 } else 609 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 610 } 611 612 scsipi_wait_drain(periph); 613 614 if (periph->periph_flags & PERIPH_REMOVABLE) 615 scsipi_prevent(periph, SPAMR_ALLOW, 616 XS_CTL_IGNORE_ILLEGAL_REQUEST | 617 XS_CTL_IGNORE_NOT_READY | 618 XS_CTL_SILENT); 619 periph->periph_flags &= ~PERIPH_OPEN; 620 621 scsipi_wait_drain(periph); 622 623 scsipi_adapter_delref(adapt); 624 625 return 0; 626 } 627 628 /* 629 * close the device.. only called if we are the LAST occurence of an open 630 * device. Convenient now but usually a pain. 631 */ 632 static int 633 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 634 { 635 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 636 int part = SDPART(dev); 637 638 mutex_enter(&sd->sc_dk.dk_openlock); 639 switch (fmt) { 640 case S_IFCHR: 641 sd->sc_dk.dk_copenmask &= ~(1 << part); 642 break; 643 case S_IFBLK: 644 sd->sc_dk.dk_bopenmask &= ~(1 << part); 645 break; 646 } 647 sd->sc_dk.dk_openmask = 648 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 649 650 if (sd->sc_dk.dk_openmask == 0) 651 sdlastclose(sd->sc_dev); 652 653 mutex_exit(&sd->sc_dk.dk_openlock); 654 return (0); 655 } 656 657 /* 658 * Actually translate the requested transfer into one the physical driver 659 * can understand. The transfer is described by a buf and will include 660 * only one physical transfer. 661 */ 662 static void 663 sdstrategy(struct buf *bp) 664 { 665 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 666 struct scsipi_periph *periph = sd->sc_periph; 667 struct disklabel *lp; 668 daddr_t blkno; 669 int s; 670 bool sector_aligned; 671 672 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 673 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 674 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 675 /* 676 * If the device has been made invalid, error out 677 */ 678 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 679 !device_is_active(sd->sc_dev)) { 680 if (periph->periph_flags & PERIPH_OPEN) 681 bp->b_error = EIO; 682 else 683 bp->b_error = ENODEV; 684 goto done; 685 } 686 687 lp = sd->sc_dk.dk_label; 688 689 /* 690 * The transfer must be a whole number of blocks, offset must not be 691 * negative. 692 */ 693 if (lp->d_secsize == DEV_BSIZE) { 694 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 695 } else { 696 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 697 } 698 if (!sector_aligned || bp->b_blkno < 0) { 699 bp->b_error = EINVAL; 700 goto done; 701 } 702 /* 703 * If it's a null transfer, return immediatly 704 */ 705 if (bp->b_bcount == 0) 706 goto done; 707 708 /* 709 * Do bounds checking, adjust transfer. if error, process. 710 * If end of partition, just return. 711 */ 712 if (SDPART(bp->b_dev) == RAW_PART) { 713 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 714 sd->params.disksize512) <= 0) 715 goto done; 716 } else { 717 if (bounds_check_with_label(&sd->sc_dk, bp, 718 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 719 goto done; 720 } 721 722 /* 723 * Now convert the block number to absolute and put it in 724 * terms of the device's logical block size. 725 */ 726 if (lp->d_secsize == DEV_BSIZE) 727 blkno = bp->b_blkno; 728 else if (lp->d_secsize > DEV_BSIZE) 729 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 730 else 731 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 732 733 if (SDPART(bp->b_dev) != RAW_PART) 734 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 735 736 bp->b_rawblkno = blkno; 737 738 s = splbio(); 739 740 /* 741 * Place it in the queue of disk activities for this disk. 742 * 743 * XXX Only do disksort() if the current operating mode does not 744 * XXX include tagged queueing. 745 */ 746 bufq_put(sd->buf_queue, bp); 747 748 /* 749 * Tell the device to get going on the transfer if it's 750 * not doing anything, otherwise just wait for completion 751 */ 752 sdstart(sd->sc_periph); 753 754 splx(s); 755 return; 756 757 done: 758 /* 759 * Correctly set the buf to indicate a completed xfer 760 */ 761 bp->b_resid = bp->b_bcount; 762 biodone(bp); 763 } 764 765 /* 766 * sdstart looks to see if there is a buf waiting for the device 767 * and that the device is not already busy. If both are true, 768 * It dequeues the buf and creates a scsi command to perform the 769 * transfer in the buf. The transfer request will call scsipi_done 770 * on completion, which will in turn call this routine again 771 * so that the next queued transfer is performed. 772 * The bufs are queued by the strategy routine (sdstrategy) 773 * 774 * This routine is also called after other non-queued requests 775 * have been made of the scsi driver, to ensure that the queue 776 * continues to be drained. 777 * 778 * must be called at the correct (highish) spl level 779 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 780 */ 781 static void 782 sdstart(struct scsipi_periph *periph) 783 { 784 struct sd_softc *sd = device_private(periph->periph_dev); 785 struct disklabel *lp = sd->sc_dk.dk_label; 786 struct buf *bp = 0; 787 struct scsipi_rw_16 cmd16; 788 struct scsipi_rw_10 cmd_big; 789 struct scsi_rw_6 cmd_small; 790 struct scsipi_generic *cmdp; 791 struct scsipi_xfer *xs; 792 int nblks, cmdlen, error __diagused, flags; 793 794 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 795 /* 796 * Check if the device has room for another command 797 */ 798 while (periph->periph_active < periph->periph_openings) { 799 /* 800 * there is excess capacity, but a special waits 801 * It'll need the adapter as soon as we clear out of the 802 * way and let it run (user level wait). 803 */ 804 if (periph->periph_flags & PERIPH_WAITING) { 805 periph->periph_flags &= ~PERIPH_WAITING; 806 wakeup((void *)periph); 807 return; 808 } 809 810 /* 811 * If the device has become invalid, abort all the 812 * reads and writes until all files have been closed and 813 * re-opened 814 */ 815 if (__predict_false( 816 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 817 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 818 bp->b_error = EIO; 819 bp->b_resid = bp->b_bcount; 820 biodone(bp); 821 continue; 822 } else { 823 return; 824 } 825 } 826 827 /* 828 * See if there is a buf with work for us to do.. 829 */ 830 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 831 return; 832 833 /* 834 * We have a buf, now we should make a command. 835 */ 836 837 if (lp->d_secsize == DEV_BSIZE) 838 nblks = bp->b_bcount >> DEV_BSHIFT; 839 else 840 nblks = howmany(bp->b_bcount, lp->d_secsize); 841 842 /* 843 * Fill out the scsi command. Use the smallest CDB possible 844 * (6-byte, 10-byte, or 16-byte). 845 */ 846 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 847 ((nblks & 0xff) == nblks) && 848 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 849 /* 6-byte CDB */ 850 memset(&cmd_small, 0, sizeof(cmd_small)); 851 cmd_small.opcode = (bp->b_flags & B_READ) ? 852 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 853 _lto3b(bp->b_rawblkno, cmd_small.addr); 854 cmd_small.length = nblks & 0xff; 855 cmdlen = sizeof(cmd_small); 856 cmdp = (struct scsipi_generic *)&cmd_small; 857 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 858 /* 10-byte CDB */ 859 memset(&cmd_big, 0, sizeof(cmd_big)); 860 cmd_big.opcode = (bp->b_flags & B_READ) ? 861 READ_10 : WRITE_10; 862 _lto4b(bp->b_rawblkno, cmd_big.addr); 863 _lto2b(nblks, cmd_big.length); 864 cmdlen = sizeof(cmd_big); 865 cmdp = (struct scsipi_generic *)&cmd_big; 866 } else { 867 /* 16-byte CDB */ 868 memset(&cmd16, 0, sizeof(cmd16)); 869 cmd16.opcode = (bp->b_flags & B_READ) ? 870 READ_16 : WRITE_16; 871 _lto8b(bp->b_rawblkno, cmd16.addr); 872 _lto4b(nblks, cmd16.length); 873 cmdlen = sizeof(cmd16); 874 cmdp = (struct scsipi_generic *)&cmd16; 875 } 876 877 /* Instrumentation. */ 878 disk_busy(&sd->sc_dk); 879 880 /* 881 * Mark the disk dirty so that the cache will be 882 * flushed on close. 883 */ 884 if ((bp->b_flags & B_READ) == 0) 885 sd->flags |= SDF_DIRTY; 886 887 /* 888 * Figure out what flags to use. 889 */ 890 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 891 if (bp->b_flags & B_READ) 892 flags |= XS_CTL_DATA_IN; 893 else 894 flags |= XS_CTL_DATA_OUT; 895 896 /* 897 * Call the routine that chats with the adapter. 898 * Note: we cannot sleep as we may be an interrupt 899 */ 900 xs = scsipi_make_xs(periph, cmdp, cmdlen, 901 (u_char *)bp->b_data, bp->b_bcount, 902 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 903 if (__predict_false(xs == NULL)) { 904 /* 905 * out of memory. Keep this buffer in the queue, and 906 * retry later. 907 */ 908 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 909 periph); 910 return; 911 } 912 /* 913 * need to dequeue the buffer before queuing the command, 914 * because cdstart may be called recursively from the 915 * HBA driver 916 */ 917 #ifdef DIAGNOSTIC 918 if (bufq_get(sd->buf_queue) != bp) 919 panic("sdstart(): dequeued wrong buf"); 920 #else 921 bufq_get(sd->buf_queue); 922 #endif 923 error = scsipi_execute_xs(xs); 924 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 925 KASSERT(error == 0); 926 } 927 } 928 929 static void 930 sdrestart(void *v) 931 { 932 int s = splbio(); 933 sdstart((struct scsipi_periph *)v); 934 splx(s); 935 } 936 937 static void 938 sddone(struct scsipi_xfer *xs, int error) 939 { 940 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 941 struct buf *bp = xs->bp; 942 943 if (sd->flags & SDF_FLUSHING) { 944 /* Flush completed, no longer dirty. */ 945 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 946 } 947 948 if (bp) { 949 bp->b_error = error; 950 bp->b_resid = xs->resid; 951 if (error) { 952 /* on a read/write error bp->b_resid is zero, so fix */ 953 bp->b_resid = bp->b_bcount; 954 } 955 956 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 957 (bp->b_flags & B_READ)); 958 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 959 960 biodone(bp); 961 } 962 } 963 964 static void 965 sdminphys(struct buf *bp) 966 { 967 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 968 long xmax; 969 970 /* 971 * If the device is ancient, we want to make sure that 972 * the transfer fits into a 6-byte cdb. 973 * 974 * XXX Note that the SCSI-I spec says that 256-block transfers 975 * are allowed in a 6-byte read/write, and are specified 976 * by settng the "length" to 0. However, we're conservative 977 * here, allowing only 255-block transfers in case an 978 * ancient device gets confused by length == 0. A length of 0 979 * in a 10-byte read/write actually means 0 blocks. 980 */ 981 if ((sd->flags & SDF_ANCIENT) && 982 ((sd->sc_periph->periph_flags & 983 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 984 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 985 986 if (bp->b_bcount > xmax) 987 bp->b_bcount = xmax; 988 } 989 990 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 991 } 992 993 static int 994 sdread(dev_t dev, struct uio *uio, int ioflag) 995 { 996 997 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 998 } 999 1000 static int 1001 sdwrite(dev_t dev, struct uio *uio, int ioflag) 1002 { 1003 1004 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1005 } 1006 1007 /* 1008 * Perform special action on behalf of the user 1009 * Knows about the internals of this device 1010 */ 1011 static int 1012 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1013 { 1014 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 1015 struct scsipi_periph *periph = sd->sc_periph; 1016 int part = SDPART(dev); 1017 int error; 1018 int s; 1019 #ifdef __HAVE_OLD_DISKLABEL 1020 struct disklabel *newlabel = NULL; 1021 #endif 1022 1023 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1024 1025 /* 1026 * If the device is not valid, some IOCTLs can still be 1027 * handled on the raw partition. Check this here. 1028 */ 1029 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1030 switch (cmd) { 1031 case DIOCKLABEL: 1032 case DIOCWLABEL: 1033 case DIOCLOCK: 1034 case DIOCEJECT: 1035 case ODIOCEJECT: 1036 case DIOCGCACHE: 1037 case DIOCSCACHE: 1038 case DIOCGSTRATEGY: 1039 case DIOCSSTRATEGY: 1040 case SCIOCIDENTIFY: 1041 case OSCIOCIDENTIFY: 1042 case SCIOCCOMMAND: 1043 case SCIOCDEBUG: 1044 if (part == RAW_PART) 1045 break; 1046 /* FALLTHROUGH */ 1047 default: 1048 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1049 return (ENODEV); 1050 else 1051 return (EIO); 1052 } 1053 } 1054 1055 error = disk_ioctl(&sd->sc_dk, dev, cmd, addr, flag, l); 1056 if (error != EPASSTHROUGH) 1057 return (error); 1058 1059 error = 0; 1060 switch (cmd) { 1061 case DIOCWDINFO: 1062 case DIOCSDINFO: 1063 #ifdef __HAVE_OLD_DISKLABEL 1064 case ODIOCWDINFO: 1065 case ODIOCSDINFO: 1066 #endif 1067 { 1068 struct disklabel *lp; 1069 1070 if ((flag & FWRITE) == 0) 1071 return (EBADF); 1072 1073 #ifdef __HAVE_OLD_DISKLABEL 1074 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1075 newlabel = malloc(sizeof *newlabel, M_TEMP, 1076 M_WAITOK | M_ZERO); 1077 if (newlabel == NULL) 1078 return EIO; 1079 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1080 lp = newlabel; 1081 } else 1082 #endif 1083 lp = (struct disklabel *)addr; 1084 1085 mutex_enter(&sd->sc_dk.dk_openlock); 1086 sd->flags |= SDF_LABELLING; 1087 1088 error = setdisklabel(sd->sc_dk.dk_label, 1089 lp, /*sd->sc_dk.dk_openmask : */0, 1090 sd->sc_dk.dk_cpulabel); 1091 if (error == 0) { 1092 if (cmd == DIOCWDINFO 1093 #ifdef __HAVE_OLD_DISKLABEL 1094 || cmd == ODIOCWDINFO 1095 #endif 1096 ) 1097 error = writedisklabel(SDLABELDEV(dev), 1098 sdstrategy, sd->sc_dk.dk_label, 1099 sd->sc_dk.dk_cpulabel); 1100 } 1101 1102 sd->flags &= ~SDF_LABELLING; 1103 mutex_exit(&sd->sc_dk.dk_openlock); 1104 #ifdef __HAVE_OLD_DISKLABEL 1105 if (newlabel != NULL) 1106 free(newlabel, M_TEMP); 1107 #endif 1108 return (error); 1109 } 1110 1111 case DIOCKLABEL: 1112 if (*(int *)addr) 1113 periph->periph_flags |= PERIPH_KEEP_LABEL; 1114 else 1115 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1116 return (0); 1117 1118 case DIOCWLABEL: 1119 if ((flag & FWRITE) == 0) 1120 return (EBADF); 1121 if (*(int *)addr) 1122 sd->flags |= SDF_WLABEL; 1123 else 1124 sd->flags &= ~SDF_WLABEL; 1125 return (0); 1126 1127 case DIOCLOCK: 1128 if (periph->periph_flags & PERIPH_REMOVABLE) 1129 return (scsipi_prevent(periph, 1130 (*(int *)addr) ? 1131 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1132 else 1133 return (ENOTTY); 1134 1135 case DIOCEJECT: 1136 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1137 return (ENOTTY); 1138 if (*(int *)addr == 0) { 1139 /* 1140 * Don't force eject: check that we are the only 1141 * partition open. If so, unlock it. 1142 */ 1143 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1144 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1145 sd->sc_dk.dk_openmask) { 1146 error = scsipi_prevent(periph, SPAMR_ALLOW, 1147 XS_CTL_IGNORE_NOT_READY); 1148 if (error) 1149 return (error); 1150 } else { 1151 return (EBUSY); 1152 } 1153 } 1154 /* FALLTHROUGH */ 1155 case ODIOCEJECT: 1156 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1157 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1158 1159 case DIOCGDEFLABEL: 1160 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1161 return (0); 1162 1163 #ifdef __HAVE_OLD_DISKLABEL 1164 case ODIOCGDEFLABEL: 1165 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1166 if (newlabel == NULL) 1167 return EIO; 1168 sdgetdefaultlabel(sd, newlabel); 1169 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1170 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1171 else 1172 error = ENOTTY; 1173 free(newlabel, M_TEMP); 1174 return error; 1175 #endif 1176 1177 case DIOCGCACHE: 1178 return (sd_getcache(sd, (int *) addr)); 1179 1180 case DIOCSCACHE: 1181 if ((flag & FWRITE) == 0) 1182 return (EBADF); 1183 return (sd_setcache(sd, *(int *) addr)); 1184 1185 case DIOCCACHESYNC: 1186 /* 1187 * XXX Do we really need to care about having a writable 1188 * file descriptor here? 1189 */ 1190 if ((flag & FWRITE) == 0) 1191 return (EBADF); 1192 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1193 error = sd_flush(sd, 0); 1194 if (error) 1195 sd->flags &= ~SDF_FLUSHING; 1196 else 1197 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1198 } 1199 return (error); 1200 1201 case DIOCGSTRATEGY: 1202 { 1203 struct disk_strategy *dks = addr; 1204 1205 s = splbio(); 1206 strlcpy(dks->dks_name, bufq_getstrategyname(sd->buf_queue), 1207 sizeof(dks->dks_name)); 1208 splx(s); 1209 dks->dks_paramlen = 0; 1210 1211 return 0; 1212 } 1213 1214 case DIOCSSTRATEGY: 1215 { 1216 struct disk_strategy *dks = addr; 1217 struct bufq_state *new_bufq; 1218 struct bufq_state *old_bufq; 1219 1220 if ((flag & FWRITE) == 0) { 1221 return EBADF; 1222 } 1223 1224 if (dks->dks_param != NULL) { 1225 return EINVAL; 1226 } 1227 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1228 error = bufq_alloc(&new_bufq, dks->dks_name, 1229 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1230 if (error) { 1231 return error; 1232 } 1233 s = splbio(); 1234 old_bufq = sd->buf_queue; 1235 bufq_move(new_bufq, old_bufq); 1236 sd->buf_queue = new_bufq; 1237 splx(s); 1238 bufq_free(old_bufq); 1239 1240 return 0; 1241 } 1242 1243 default: 1244 if (part != RAW_PART) 1245 return (ENOTTY); 1246 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1247 } 1248 1249 #ifdef DIAGNOSTIC 1250 panic("sdioctl: impossible"); 1251 #endif 1252 } 1253 1254 static void 1255 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1256 { 1257 1258 memset(lp, 0, sizeof(struct disklabel)); 1259 1260 lp->d_secsize = sd->params.blksize; 1261 lp->d_ntracks = sd->params.heads; 1262 lp->d_nsectors = sd->params.sectors; 1263 lp->d_ncylinders = sd->params.cyls; 1264 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1265 1266 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sd->sc_periph))) { 1267 case SCSIPI_BUSTYPE_SCSI: 1268 lp->d_type = DKTYPE_SCSI; 1269 break; 1270 case SCSIPI_BUSTYPE_ATAPI: 1271 lp->d_type = DKTYPE_ATAPI; 1272 break; 1273 } 1274 /* 1275 * XXX 1276 * We could probe the mode pages to figure out what kind of disc it is. 1277 * Is this worthwhile? 1278 */ 1279 strncpy(lp->d_typename, sd->name, 16); 1280 strncpy(lp->d_packname, "fictitious", 16); 1281 if (sd->params.disksize > UINT32_MAX) 1282 lp->d_secperunit = UINT32_MAX; 1283 else 1284 lp->d_secperunit = sd->params.disksize; 1285 lp->d_rpm = sd->params.rot_rate; 1286 lp->d_interleave = 1; 1287 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1288 D_REMOVABLE : 0; 1289 1290 lp->d_partitions[RAW_PART].p_offset = 0; 1291 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1292 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1293 lp->d_npartitions = RAW_PART + 1; 1294 1295 lp->d_magic = DISKMAGIC; 1296 lp->d_magic2 = DISKMAGIC; 1297 lp->d_checksum = dkcksum(lp); 1298 } 1299 1300 1301 /* 1302 * Load the label information on the named device 1303 */ 1304 static int 1305 sdgetdisklabel(struct sd_softc *sd) 1306 { 1307 struct disklabel *lp = sd->sc_dk.dk_label; 1308 const char *errstring; 1309 1310 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1311 1312 sdgetdefaultlabel(sd, lp); 1313 1314 if (lp->d_secpercyl == 0) { 1315 lp->d_secpercyl = 100; 1316 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1317 } 1318 1319 /* 1320 * Call the generic disklabel extraction routine 1321 */ 1322 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1323 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1324 if (errstring) { 1325 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1326 return EIO; 1327 } 1328 return 0; 1329 } 1330 1331 static bool 1332 sd_shutdown(device_t self, int how) 1333 { 1334 struct sd_softc *sd = device_private(self); 1335 1336 /* 1337 * If the disk cache needs to be flushed, and the disk supports 1338 * it, flush it. We're cold at this point, so we poll for 1339 * completion. 1340 */ 1341 if ((sd->flags & SDF_DIRTY) != 0) { 1342 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1343 aprint_error_dev(sd->sc_dev, 1344 "cache synchronization failed\n"); 1345 sd->flags &= ~SDF_FLUSHING; 1346 } else 1347 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1348 } 1349 return true; 1350 } 1351 1352 static bool 1353 sd_suspend(device_t dv, const pmf_qual_t *qual) 1354 { 1355 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1356 } 1357 1358 /* 1359 * Check Errors 1360 */ 1361 static int 1362 sd_interpret_sense(struct scsipi_xfer *xs) 1363 { 1364 struct scsipi_periph *periph = xs->xs_periph; 1365 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1366 struct sd_softc *sd = device_private(periph->periph_dev); 1367 int s, error, retval = EJUSTRETURN; 1368 1369 /* 1370 * If the periph is already recovering, just do the normal 1371 * error processing. 1372 */ 1373 if (periph->periph_flags & PERIPH_RECOVERING) 1374 return (retval); 1375 1376 /* 1377 * Ignore errors from accessing illegal fields (e.g. trying to 1378 * lock the door of a digicam, which doesn't have a door that 1379 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1380 */ 1381 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1382 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1383 sense->asc == 0x24 && 1384 sense->ascq == 0x00) { /* Illegal field in CDB */ 1385 if (!(xs->xs_control & XS_CTL_SILENT)) { 1386 scsipi_printaddr(periph); 1387 printf("no door lock\n"); 1388 } 1389 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1390 return (retval); 1391 } 1392 1393 1394 1395 /* 1396 * If the device is not open yet, let the generic code handle it. 1397 */ 1398 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1399 return (retval); 1400 1401 /* 1402 * If it isn't a extended or extended/deferred error, let 1403 * the generic code handle it. 1404 */ 1405 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1406 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1407 return (retval); 1408 1409 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1410 sense->asc == 0x4) { 1411 if (sense->ascq == 0x01) { 1412 /* 1413 * Unit In The Process Of Becoming Ready. 1414 */ 1415 printf("%s: waiting for pack to spin up...\n", 1416 device_xname(sd->sc_dev)); 1417 if (!callout_pending(&periph->periph_callout)) 1418 scsipi_periph_freeze(periph, 1); 1419 callout_reset(&periph->periph_callout, 1420 5 * hz, scsipi_periph_timed_thaw, periph); 1421 retval = ERESTART; 1422 } else if (sense->ascq == 0x02) { 1423 printf("%s: pack is stopped, restarting...\n", 1424 device_xname(sd->sc_dev)); 1425 s = splbio(); 1426 periph->periph_flags |= PERIPH_RECOVERING; 1427 splx(s); 1428 error = scsipi_start(periph, SSS_START, 1429 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1430 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1431 if (error) { 1432 aprint_error_dev(sd->sc_dev, 1433 "unable to restart pack\n"); 1434 retval = error; 1435 } else 1436 retval = ERESTART; 1437 s = splbio(); 1438 periph->periph_flags &= ~PERIPH_RECOVERING; 1439 splx(s); 1440 } 1441 } 1442 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1443 sense->asc == 0x31 && 1444 sense->ascq == 0x00) { /* maybe for any asq ? */ 1445 /* Medium Format Corrupted */ 1446 retval = EFTYPE; 1447 } 1448 return (retval); 1449 } 1450 1451 1452 static int 1453 sdsize(dev_t dev) 1454 { 1455 struct sd_softc *sd; 1456 int part, unit, omask; 1457 int size; 1458 1459 unit = SDUNIT(dev); 1460 sd = device_lookup_private(&sd_cd, unit); 1461 if (sd == NULL) 1462 return (-1); 1463 1464 if (!device_is_active(sd->sc_dev)) 1465 return (-1); 1466 1467 part = SDPART(dev); 1468 omask = sd->sc_dk.dk_openmask & (1 << part); 1469 1470 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1471 return (-1); 1472 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1473 size = -1; 1474 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1475 size = -1; 1476 else 1477 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1478 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1479 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1480 return (-1); 1481 return (size); 1482 } 1483 1484 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1485 static struct scsipi_xfer sx; 1486 static int sddoingadump; 1487 1488 /* 1489 * dump all of physical memory into the partition specified, starting 1490 * at offset 'dumplo' into the partition. 1491 */ 1492 static int 1493 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1494 { 1495 struct sd_softc *sd; /* disk unit to do the I/O */ 1496 struct disklabel *lp; /* disk's disklabel */ 1497 int unit, part; 1498 int sectorsize; /* size of a disk sector */ 1499 int nsects; /* number of sectors in partition */ 1500 int sectoff; /* sector offset of partition */ 1501 int totwrt; /* total number of sectors left to write */ 1502 int nwrt; /* current number of sectors to write */ 1503 struct scsipi_rw_10 cmd; /* write command */ 1504 struct scsipi_xfer *xs; /* ... convenience */ 1505 struct scsipi_periph *periph; 1506 struct scsipi_channel *chan; 1507 1508 /* Check if recursive dump; if so, punt. */ 1509 if (sddoingadump) 1510 return (EFAULT); 1511 1512 /* Mark as active early. */ 1513 sddoingadump = 1; 1514 1515 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1516 part = SDPART(dev); 1517 1518 /* Check for acceptable drive number. */ 1519 sd = device_lookup_private(&sd_cd, unit); 1520 if (sd == NULL) 1521 return (ENXIO); 1522 1523 if (!device_is_active(sd->sc_dev)) 1524 return (ENODEV); 1525 1526 periph = sd->sc_periph; 1527 chan = periph->periph_channel; 1528 1529 /* Make sure it was initialized. */ 1530 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1531 return (ENXIO); 1532 1533 /* Convert to disk sectors. Request must be a multiple of size. */ 1534 lp = sd->sc_dk.dk_label; 1535 sectorsize = lp->d_secsize; 1536 if ((size % sectorsize) != 0) 1537 return (EFAULT); 1538 totwrt = size / sectorsize; 1539 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1540 1541 nsects = lp->d_partitions[part].p_size; 1542 sectoff = lp->d_partitions[part].p_offset; 1543 1544 /* Check transfer bounds against partition size. */ 1545 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1546 return (EINVAL); 1547 1548 /* Offset block number to start of partition. */ 1549 blkno += sectoff; 1550 1551 xs = &sx; 1552 1553 while (totwrt > 0) { 1554 nwrt = totwrt; /* XXX */ 1555 #ifndef SD_DUMP_NOT_TRUSTED 1556 /* 1557 * Fill out the scsi command 1558 */ 1559 memset(&cmd, 0, sizeof(cmd)); 1560 cmd.opcode = WRITE_10; 1561 _lto4b(blkno, cmd.addr); 1562 _lto2b(nwrt, cmd.length); 1563 /* 1564 * Fill out the scsipi_xfer structure 1565 * Note: we cannot sleep as we may be an interrupt 1566 * don't use scsipi_command() as it may want to wait 1567 * for an xs. 1568 */ 1569 memset(xs, 0, sizeof(sx)); 1570 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1571 XS_CTL_DATA_OUT; 1572 xs->xs_status = 0; 1573 xs->xs_periph = periph; 1574 xs->xs_retries = SDRETRIES; 1575 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1576 xs->cmd = (struct scsipi_generic *)&cmd; 1577 xs->cmdlen = sizeof(cmd); 1578 xs->resid = nwrt * sectorsize; 1579 xs->error = XS_NOERROR; 1580 xs->bp = 0; 1581 xs->data = va; 1582 xs->datalen = nwrt * sectorsize; 1583 callout_init(&xs->xs_callout, 0); 1584 1585 /* 1586 * Pass all this info to the scsi driver. 1587 */ 1588 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1589 if ((xs->xs_status & XS_STS_DONE) == 0 || 1590 xs->error != XS_NOERROR) 1591 return (EIO); 1592 #else /* SD_DUMP_NOT_TRUSTED */ 1593 /* Let's just talk about this first... */ 1594 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1595 delay(500 * 1000); /* half a second */ 1596 #endif /* SD_DUMP_NOT_TRUSTED */ 1597 1598 /* update block count */ 1599 totwrt -= nwrt; 1600 blkno += nwrt; 1601 va = (char *)va + sectorsize * nwrt; 1602 } 1603 sddoingadump = 0; 1604 return (0); 1605 } 1606 1607 static int 1608 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1609 int page, int flags, int *big) 1610 { 1611 1612 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1613 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1614 *big = 1; 1615 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1616 size + sizeof(struct scsi_mode_parameter_header_10), 1617 flags, SDRETRIES, 6000); 1618 } else { 1619 *big = 0; 1620 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1621 size + sizeof(struct scsi_mode_parameter_header_6), 1622 flags, SDRETRIES, 6000); 1623 } 1624 } 1625 1626 static int 1627 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1628 int flags, int big) 1629 { 1630 1631 if (big) { 1632 struct scsi_mode_parameter_header_10 *header = sense; 1633 1634 _lto2b(0, header->data_length); 1635 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1636 size + sizeof(struct scsi_mode_parameter_header_10), 1637 flags, SDRETRIES, 6000); 1638 } else { 1639 struct scsi_mode_parameter_header_6 *header = sense; 1640 1641 header->data_length = 0; 1642 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1643 size + sizeof(struct scsi_mode_parameter_header_6), 1644 flags, SDRETRIES, 6000); 1645 } 1646 } 1647 1648 /* 1649 * sd_validate_blksize: 1650 * 1651 * Validate the block size. Print error if periph is specified, 1652 */ 1653 static int 1654 sd_validate_blksize(struct scsipi_periph *periph, int len) 1655 { 1656 1657 switch (len) { 1658 case 256: 1659 case 512: 1660 case 1024: 1661 case 2048: 1662 case 4096: 1663 return 1; 1664 } 1665 1666 if (periph) { 1667 scsipi_printaddr(periph); 1668 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1669 (len ^ (1 << (ffs(len) - 1))) ? 1670 "preposterous" : "unsupported", 1671 len, SD_DEFAULT_BLKSIZE); 1672 } 1673 1674 return 0; 1675 } 1676 1677 /* 1678 * sd_read_capacity: 1679 * 1680 * Find out from the device what its capacity is. 1681 */ 1682 static u_int64_t 1683 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1684 { 1685 union { 1686 struct scsipi_read_capacity_10 cmd; 1687 struct scsipi_read_capacity_16 cmd16; 1688 } cmd; 1689 union { 1690 struct scsipi_read_capacity_10_data data; 1691 struct scsipi_read_capacity_16_data data16; 1692 } *datap; 1693 uint64_t rv; 1694 1695 memset(&cmd, 0, sizeof(cmd)); 1696 cmd.cmd.opcode = READ_CAPACITY_10; 1697 1698 /* 1699 * Don't allocate data buffer on stack; 1700 * The lower driver layer might use the same stack and 1701 * if it uses region which is in the same cacheline, 1702 * cache flush ops against the data buffer won't work properly. 1703 */ 1704 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1705 if (datap == NULL) 1706 return 0; 1707 1708 /* 1709 * If the command works, interpret the result as a 4 byte 1710 * number of blocks 1711 */ 1712 rv = 0; 1713 memset(datap, 0, sizeof(datap->data)); 1714 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1715 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1716 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1717 goto out; 1718 1719 if (_4btol(datap->data.addr) != 0xffffffff) { 1720 *blksize = _4btol(datap->data.length); 1721 rv = _4btol(datap->data.addr) + 1; 1722 goto out; 1723 } 1724 1725 /* 1726 * Device is larger than can be reflected by READ CAPACITY (10). 1727 * Try READ CAPACITY (16). 1728 */ 1729 1730 memset(&cmd, 0, sizeof(cmd)); 1731 cmd.cmd16.opcode = READ_CAPACITY_16; 1732 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1733 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1734 1735 memset(datap, 0, sizeof(datap->data16)); 1736 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1737 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1738 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1739 goto out; 1740 1741 *blksize = _4btol(datap->data16.length); 1742 rv = _8btol(datap->data16.addr) + 1; 1743 1744 out: 1745 free(datap, M_TEMP); 1746 return rv; 1747 } 1748 1749 static int 1750 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1751 { 1752 struct { 1753 struct scsi_mode_parameter_header_6 header; 1754 /* no block descriptor */ 1755 u_int8_t pg_code; /* page code (should be 6) */ 1756 u_int8_t pg_length; /* page length (should be 11) */ 1757 u_int8_t wcd; /* bit0: cache disable */ 1758 u_int8_t lbs[2]; /* logical block size */ 1759 u_int8_t size[5]; /* number of log. blocks */ 1760 u_int8_t pp; /* power/performance */ 1761 u_int8_t flags; 1762 u_int8_t resvd; 1763 } scsipi_sense; 1764 u_int64_t blocks; 1765 int error, blksize; 1766 1767 /* 1768 * sd_read_capacity (ie "read capacity") and mode sense page 6 1769 * give the same information. Do both for now, and check 1770 * for consistency. 1771 * XXX probably differs for removable media 1772 */ 1773 dp->blksize = SD_DEFAULT_BLKSIZE; 1774 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1775 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1776 1777 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1778 &scsipi_sense.header, sizeof(scsipi_sense), 1779 flags, SDRETRIES, 6000); 1780 1781 if (error != 0) 1782 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1783 1784 dp->blksize = blksize; 1785 if (!sd_validate_blksize(NULL, dp->blksize)) 1786 dp->blksize = _2btol(scsipi_sense.lbs); 1787 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1788 dp->blksize = SD_DEFAULT_BLKSIZE; 1789 1790 /* 1791 * Create a pseudo-geometry. 1792 */ 1793 dp->heads = 64; 1794 dp->sectors = 32; 1795 dp->cyls = blocks / (dp->heads * dp->sectors); 1796 dp->disksize = _5btol(scsipi_sense.size); 1797 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1798 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1799 (unsigned long long)dp->disksize, 1800 (unsigned long long)blocks); 1801 dp->disksize = blocks; 1802 } 1803 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1804 1805 return (SDGP_RESULT_OK); 1806 } 1807 1808 /* 1809 * Get the scsi driver to send a full inquiry to the * device and use the 1810 * results to fill out the disk parameter structure. 1811 */ 1812 static int 1813 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1814 { 1815 u_int64_t blocks; 1816 int error, blksize; 1817 #if 0 1818 int i; 1819 u_int8_t *p; 1820 #endif 1821 1822 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1823 flags); 1824 if (blocks == 0) { 1825 struct scsipi_read_format_capacities cmd; 1826 struct { 1827 struct scsipi_capacity_list_header header; 1828 struct scsipi_capacity_descriptor desc; 1829 } __packed data; 1830 1831 memset(&cmd, 0, sizeof(cmd)); 1832 memset(&data, 0, sizeof(data)); 1833 cmd.opcode = READ_FORMAT_CAPACITIES; 1834 _lto2b(sizeof(data), cmd.length); 1835 1836 error = scsipi_command(sd->sc_periph, 1837 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1838 SDRETRIES, 20000, NULL, 1839 flags | XS_CTL_DATA_IN); 1840 if (error == EFTYPE) { 1841 /* Medium Format Corrupted, handle as not formatted */ 1842 return (SDGP_RESULT_UNFORMATTED); 1843 } 1844 if (error || data.header.length == 0) 1845 return (SDGP_RESULT_OFFLINE); 1846 1847 #if 0 1848 printf("rfc: length=%d\n", data.header.length); 1849 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"); 1850 #endif 1851 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1852 case SCSIPI_CAP_DESC_CODE_RESERVED: 1853 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1854 break; 1855 1856 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1857 return (SDGP_RESULT_UNFORMATTED); 1858 1859 case SCSIPI_CAP_DESC_CODE_NONE: 1860 return (SDGP_RESULT_OFFLINE); 1861 } 1862 1863 dp->disksize = blocks = _4btol(data.desc.nblks); 1864 if (blocks == 0) 1865 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1866 1867 blksize = _3btol(data.desc.blklen); 1868 1869 } else if (!sd_validate_blksize(NULL, blksize)) { 1870 struct sd_mode_sense_data scsipi_sense; 1871 int big, bsize; 1872 struct scsi_general_block_descriptor *bdesc; 1873 1874 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1875 error = sd_mode_sense(sd, 0, &scsipi_sense, 1876 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1877 if (!error) { 1878 if (big) { 1879 bdesc = (void *)(&scsipi_sense.header.big + 1); 1880 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1881 } else { 1882 bdesc = (void *)(&scsipi_sense.header.small + 1); 1883 bsize = scsipi_sense.header.small.blk_desc_len; 1884 } 1885 1886 #if 0 1887 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1888 printf("page 0 bsize=%d\n", bsize); 1889 printf("page 0 ok\n"); 1890 #endif 1891 1892 if (bsize >= 8) { 1893 blksize = _3btol(bdesc->blklen); 1894 } 1895 } 1896 } 1897 1898 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1899 blksize = SD_DEFAULT_BLKSIZE; 1900 1901 dp->blksize = blksize; 1902 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1903 return (0); 1904 } 1905 1906 static int 1907 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1908 { 1909 struct sd_mode_sense_data scsipi_sense; 1910 int error; 1911 int big, byte2; 1912 size_t poffset; 1913 union scsi_disk_pages *pages; 1914 1915 byte2 = SMS_DBD; 1916 again: 1917 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1918 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1919 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1920 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1921 flags | XS_CTL_SILENT, &big); 1922 if (error) { 1923 if (byte2 == SMS_DBD) { 1924 /* No result; try once more with DBD off */ 1925 byte2 = 0; 1926 goto again; 1927 } 1928 return (error); 1929 } 1930 1931 if (big) { 1932 poffset = sizeof scsipi_sense.header.big; 1933 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1934 } else { 1935 poffset = sizeof scsipi_sense.header.small; 1936 poffset += scsipi_sense.header.small.blk_desc_len; 1937 } 1938 1939 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1940 return ERESTART; 1941 1942 pages = (void *)((u_long)&scsipi_sense + poffset); 1943 #if 0 1944 { 1945 size_t i; 1946 u_int8_t *p; 1947 1948 printf("page 4 sense:"); 1949 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1950 i--, p++) 1951 printf(" %02x", *p); 1952 printf("\n"); 1953 printf("page 4 pg_code=%d sense=%p/%p\n", 1954 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1955 } 1956 #endif 1957 1958 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1959 return (ERESTART); 1960 1961 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1962 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1963 _3btol(pages->rigid_geometry.ncyl), 1964 pages->rigid_geometry.nheads, 1965 _2btol(pages->rigid_geometry.st_cyl_wp), 1966 _2btol(pages->rigid_geometry.st_cyl_rwc), 1967 _2btol(pages->rigid_geometry.land_zone))); 1968 1969 /* 1970 * KLUDGE!! (for zone recorded disks) 1971 * give a number of sectors so that sec * trks * cyls 1972 * is <= disk_size 1973 * can lead to wasted space! THINK ABOUT THIS ! 1974 */ 1975 dp->heads = pages->rigid_geometry.nheads; 1976 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1977 if (dp->heads == 0 || dp->cyls == 0) 1978 return (ERESTART); 1979 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1980 1981 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1982 if (dp->rot_rate == 0) 1983 dp->rot_rate = 3600; 1984 1985 #if 0 1986 printf("page 4 ok\n"); 1987 #endif 1988 return (0); 1989 } 1990 1991 static int 1992 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1993 { 1994 struct sd_mode_sense_data scsipi_sense; 1995 int error; 1996 int big, byte2; 1997 size_t poffset; 1998 union scsi_disk_pages *pages; 1999 2000 byte2 = SMS_DBD; 2001 again: 2002 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2003 error = sd_mode_sense(sd, 0, &scsipi_sense, 2004 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2005 sizeof(scsipi_sense.pages.flex_geometry), 5, 2006 flags | XS_CTL_SILENT, &big); 2007 if (error) { 2008 if (byte2 == SMS_DBD) { 2009 /* No result; try once more with DBD off */ 2010 byte2 = 0; 2011 goto again; 2012 } 2013 return (error); 2014 } 2015 2016 if (big) { 2017 poffset = sizeof scsipi_sense.header.big; 2018 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2019 } else { 2020 poffset = sizeof scsipi_sense.header.small; 2021 poffset += scsipi_sense.header.small.blk_desc_len; 2022 } 2023 2024 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2025 return ERESTART; 2026 2027 pages = (void *)((u_long)&scsipi_sense + poffset); 2028 #if 0 2029 { 2030 size_t i; 2031 u_int8_t *p; 2032 2033 printf("page 5 sense:"); 2034 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2035 i--, p++) 2036 printf(" %02x", *p); 2037 printf("\n"); 2038 printf("page 5 pg_code=%d sense=%p/%p\n", 2039 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2040 } 2041 #endif 2042 2043 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2044 return (ERESTART); 2045 2046 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2047 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2048 _3btol(pages->flex_geometry.ncyl), 2049 pages->flex_geometry.nheads, 2050 pages->flex_geometry.ph_sec_tr, 2051 _2btol(pages->flex_geometry.bytes_s))); 2052 2053 dp->heads = pages->flex_geometry.nheads; 2054 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2055 dp->sectors = pages->flex_geometry.ph_sec_tr; 2056 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2057 return (ERESTART); 2058 2059 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2060 if (dp->rot_rate == 0) 2061 dp->rot_rate = 3600; 2062 2063 #if 0 2064 printf("page 5 ok\n"); 2065 #endif 2066 return (0); 2067 } 2068 2069 static int 2070 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2071 { 2072 int error; 2073 2074 /* 2075 * If offline, the SDEV_MEDIA_LOADED flag will be 2076 * cleared by the caller if necessary. 2077 */ 2078 if (sd->type == T_SIMPLE_DIRECT) { 2079 error = sd_get_simplifiedparms(sd, dp, flags); 2080 if (!error) 2081 goto setprops; 2082 return (error); 2083 } 2084 2085 error = sd_get_capacity(sd, dp, flags); 2086 if (error) 2087 return (error); 2088 2089 if (sd->type == T_OPTICAL) 2090 goto page0; 2091 2092 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2093 if (!sd_get_parms_page5(sd, dp, flags) || 2094 !sd_get_parms_page4(sd, dp, flags)) 2095 goto setprops; 2096 } else { 2097 if (!sd_get_parms_page4(sd, dp, flags) || 2098 !sd_get_parms_page5(sd, dp, flags)) 2099 goto setprops; 2100 } 2101 2102 page0: 2103 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2104 /* Try calling driver's method for figuring out geometry. */ 2105 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2106 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2107 (sd->sc_periph, dp, dp->disksize)) { 2108 /* 2109 * Use adaptec standard fictitious geometry 2110 * this depends on which controller (e.g. 1542C is 2111 * different. but we have to put SOMETHING here..) 2112 */ 2113 dp->heads = 64; 2114 dp->sectors = 32; 2115 dp->cyls = dp->disksize / (64 * 32); 2116 } 2117 dp->rot_rate = 3600; 2118 2119 setprops: 2120 sd_set_geometry(sd); 2121 2122 return (SDGP_RESULT_OK); 2123 } 2124 2125 static int 2126 sd_flush(struct sd_softc *sd, int flags) 2127 { 2128 struct scsipi_periph *periph = sd->sc_periph; 2129 struct scsi_synchronize_cache_10 cmd; 2130 2131 /* 2132 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2133 * We issue with address 0 length 0, which should be 2134 * interpreted by the device as "all remaining blocks 2135 * starting at address 0". We ignore ILLEGAL REQUEST 2136 * in the event that the command is not supported by 2137 * the device, and poll for completion so that we know 2138 * that the cache has actually been flushed. 2139 * 2140 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2141 * command, as indicated by our quirks flags. 2142 * 2143 * XXX What about older devices? 2144 */ 2145 if (periph->periph_version < 2 || 2146 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2147 return (0); 2148 2149 sd->flags |= SDF_FLUSHING; 2150 memset(&cmd, 0, sizeof(cmd)); 2151 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2152 2153 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2154 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2155 } 2156 2157 static int 2158 sd_getcache(struct sd_softc *sd, int *bitsp) 2159 { 2160 struct scsipi_periph *periph = sd->sc_periph; 2161 struct sd_mode_sense_data scsipi_sense; 2162 int error, bits = 0; 2163 int big; 2164 union scsi_disk_pages *pages; 2165 2166 if (periph->periph_version < 2) 2167 return (EOPNOTSUPP); 2168 2169 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2170 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2171 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2172 if (error) 2173 return (error); 2174 2175 if (big) 2176 pages = (void *)(&scsipi_sense.header.big + 1); 2177 else 2178 pages = (void *)(&scsipi_sense.header.small + 1); 2179 2180 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2181 bits |= DKCACHE_READ; 2182 if (pages->caching_params.flags & CACHING_WCE) 2183 bits |= DKCACHE_WRITE; 2184 if (pages->caching_params.pg_code & PGCODE_PS) 2185 bits |= DKCACHE_SAVE; 2186 2187 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2188 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2189 sizeof(scsipi_sense.pages.caching_params), 2190 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2191 if (error == 0) { 2192 if (big) 2193 pages = (void *)(&scsipi_sense.header.big + 1); 2194 else 2195 pages = (void *)(&scsipi_sense.header.small + 1); 2196 2197 if (pages->caching_params.flags & CACHING_RCD) 2198 bits |= DKCACHE_RCHANGE; 2199 if (pages->caching_params.flags & CACHING_WCE) 2200 bits |= DKCACHE_WCHANGE; 2201 } 2202 2203 *bitsp = bits; 2204 2205 return (0); 2206 } 2207 2208 static int 2209 sd_setcache(struct sd_softc *sd, int bits) 2210 { 2211 struct scsipi_periph *periph = sd->sc_periph; 2212 struct sd_mode_sense_data scsipi_sense; 2213 int error; 2214 uint8_t oflags, byte2 = 0; 2215 int big; 2216 union scsi_disk_pages *pages; 2217 2218 if (periph->periph_version < 2) 2219 return (EOPNOTSUPP); 2220 2221 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2222 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2223 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2224 if (error) 2225 return (error); 2226 2227 if (big) 2228 pages = (void *)(&scsipi_sense.header.big + 1); 2229 else 2230 pages = (void *)(&scsipi_sense.header.small + 1); 2231 2232 oflags = pages->caching_params.flags; 2233 2234 if (bits & DKCACHE_READ) 2235 pages->caching_params.flags &= ~CACHING_RCD; 2236 else 2237 pages->caching_params.flags |= CACHING_RCD; 2238 2239 if (bits & DKCACHE_WRITE) 2240 pages->caching_params.flags |= CACHING_WCE; 2241 else 2242 pages->caching_params.flags &= ~CACHING_WCE; 2243 2244 if (oflags == pages->caching_params.flags) 2245 return (0); 2246 2247 pages->caching_params.pg_code &= PGCODE_MASK; 2248 2249 if (bits & DKCACHE_SAVE) 2250 byte2 |= SMS_SP; 2251 2252 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2253 sizeof(struct scsi_mode_page_header) + 2254 pages->caching_params.pg_length, 0, big)); 2255 } 2256 2257 static void 2258 sd_set_geometry(struct sd_softc *sd) 2259 { 2260 struct disk_geom *dg = &sd->sc_dk.dk_geom; 2261 2262 memset(dg, 0, sizeof(*dg)); 2263 2264 dg->dg_secperunit = sd->params.disksize; 2265 dg->dg_secsize = sd->params.blksize; 2266 dg->dg_nsectors = sd->params.sectors; 2267 dg->dg_ntracks = sd->params.heads; 2268 dg->dg_ncylinders = sd->params.cyls; 2269 2270 disk_set_info(sd->sc_dev, &sd->sc_dk, NULL); 2271 } 2272