sd.c revision 1.317
1 /* $NetBSD: sd.c,v 1.317 2015/08/24 23:13:15 pooka 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 (at) 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 (at) dialix.oz.au) Sept 1992 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.317 2015/08/24 23:13:15 pooka Exp $"); 51 52 #ifdef _KERNEL_OPT 53 #include "opt_scsi.h" 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/file.h> 60 #include <sys/stat.h> 61 #include <sys/ioctl.h> 62 #include <sys/scsiio.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/errno.h> 68 #include <sys/device.h> 69 #include <sys/disklabel.h> 70 #include <sys/disk.h> 71 #include <sys/proc.h> 72 #include <sys/conf.h> 73 #include <sys/vnode.h> 74 #include <sys/rndsource.h> 75 76 #include <dev/scsipi/scsi_spc.h> 77 #include <dev/scsipi/scsipi_all.h> 78 #include <dev/scsipi/scsi_all.h> 79 #include <dev/scsipi/scsipi_disk.h> 80 #include <dev/scsipi/scsi_disk.h> 81 #include <dev/scsipi/scsiconf.h> 82 #include <dev/scsipi/scsipi_base.h> 83 #include <dev/scsipi/sdvar.h> 84 85 #include <prop/proplib.h> 86 87 #define SDUNIT(dev) DISKUNIT(dev) 88 #define SDPART(dev) DISKPART(dev) 89 #define SDMINOR(unit, part) DISKMINOR(unit, part) 90 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 91 92 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 93 94 #define SD_DEFAULT_BLKSIZE 512 95 96 static void sdminphys(struct buf *); 97 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 98 static int sdgetdisklabel(struct sd_softc *); 99 static void sdstart(struct scsipi_periph *); 100 static void sdrestart(void *); 101 static void sddone(struct scsipi_xfer *, int); 102 static bool sd_suspend(device_t, const pmf_qual_t *); 103 static bool sd_shutdown(device_t, int); 104 static int sd_interpret_sense(struct scsipi_xfer *); 105 static int sdlastclose(device_t); 106 107 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 108 int, int *); 109 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int); 111 static int sd_validate_blksize(struct scsipi_periph *, int); 112 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 113 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 114 int); 115 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 117 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 118 int); 119 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 120 int); 121 122 static int sd_flush(struct sd_softc *, int); 123 static int sd_getcache(struct sd_softc *, int *); 124 static int sd_setcache(struct sd_softc *, int); 125 126 static int sdmatch(device_t, cfdata_t, void *); 127 static void sdattach(device_t, device_t, void *); 128 static int sddetach(device_t, int); 129 static void sd_set_geometry(struct sd_softc *); 130 131 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 132 NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 133 134 extern struct cfdriver sd_cd; 135 136 static const struct scsipi_inquiry_pattern sd_patterns[] = { 137 {T_DIRECT, T_FIXED, 138 "", "", ""}, 139 {T_DIRECT, T_REMOV, 140 "", "", ""}, 141 {T_OPTICAL, T_FIXED, 142 "", "", ""}, 143 {T_OPTICAL, T_REMOV, 144 "", "", ""}, 145 {T_SIMPLE_DIRECT, T_FIXED, 146 "", "", ""}, 147 {T_SIMPLE_DIRECT, T_REMOV, 148 "", "", ""}, 149 }; 150 151 static dev_type_open(sdopen); 152 static dev_type_close(sdclose); 153 static dev_type_read(sdread); 154 static dev_type_write(sdwrite); 155 static dev_type_ioctl(sdioctl); 156 static dev_type_strategy(sdstrategy); 157 static dev_type_dump(sddump); 158 static dev_type_size(sdsize); 159 160 const struct bdevsw sd_bdevsw = { 161 .d_open = sdopen, 162 .d_close = sdclose, 163 .d_strategy = sdstrategy, 164 .d_ioctl = sdioctl, 165 .d_dump = sddump, 166 .d_psize = sdsize, 167 .d_discard = nodiscard, 168 .d_flag = D_DISK 169 }; 170 171 const struct cdevsw sd_cdevsw = { 172 .d_open = sdopen, 173 .d_close = sdclose, 174 .d_read = sdread, 175 .d_write = sdwrite, 176 .d_ioctl = sdioctl, 177 .d_stop = nostop, 178 .d_tty = notty, 179 .d_poll = nopoll, 180 .d_mmap = nommap, 181 .d_kqfilter = nokqfilter, 182 .d_discard = nodiscard, 183 .d_flag = D_DISK 184 }; 185 186 static struct dkdriver sddkdriver = { 187 .d_strategy = sdstrategy, 188 .d_minphys = sdminphys 189 }; 190 191 static const struct scsipi_periphsw sd_switch = { 192 sd_interpret_sense, /* check our error handler first */ 193 sdstart, /* have a queue, served by this */ 194 NULL, /* have no async handler */ 195 sddone, /* deal with stats at interrupt time */ 196 }; 197 198 struct sd_mode_sense_data { 199 /* 200 * XXX 201 * We are not going to parse this as-is -- it just has to be large 202 * enough. 203 */ 204 union { 205 struct scsi_mode_parameter_header_6 small; 206 struct scsi_mode_parameter_header_10 big; 207 } header; 208 struct scsi_general_block_descriptor blk_desc; 209 union scsi_disk_pages pages; 210 }; 211 212 /* 213 * The routine called by the low level scsi routine when it discovers 214 * A device suitable for this driver 215 */ 216 static int 217 sdmatch(device_t parent, cfdata_t match, 218 void *aux) 219 { 220 struct scsipibus_attach_args *sa = aux; 221 int priority; 222 223 (void)scsipi_inqmatch(&sa->sa_inqbuf, 224 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 225 sizeof(sd_patterns[0]), &priority); 226 227 return (priority); 228 } 229 230 /* 231 * Attach routine common to atapi & scsi. 232 */ 233 static void 234 sdattach(device_t parent, device_t self, void *aux) 235 { 236 struct sd_softc *sd = device_private(self); 237 struct scsipibus_attach_args *sa = aux; 238 struct scsipi_periph *periph = sa->sa_periph; 239 int error, result; 240 struct disk_parms *dp = &sd->params; 241 char pbuf[9]; 242 243 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 244 245 sd->sc_dev = self; 246 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 247 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 248 if (sd->type == T_SIMPLE_DIRECT) 249 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 250 251 if (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph)) == 252 SCSIPI_BUSTYPE_SCSI && periph->periph_version == 0) 253 sd->flags |= SDF_ANCIENT; 254 255 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 256 257 callout_init(&sd->sc_callout, 0); 258 259 /* 260 * Store information needed to contact our base driver 261 */ 262 sd->sc_periph = periph; 263 264 periph->periph_dev = sd->sc_dev; 265 periph->periph_switch = &sd_switch; 266 267 /* 268 * Increase our openings to the maximum-per-periph 269 * supported by the adapter. This will either be 270 * clamped down or grown by the adapter if necessary. 271 */ 272 periph->periph_openings = 273 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 274 periph->periph_flags |= PERIPH_GROW_OPENINGS; 275 276 /* 277 * Initialize and attach the disk structure. 278 */ 279 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 280 disk_attach(&sd->sc_dk); 281 282 /* 283 * Use the subdriver to request information regarding the drive. 284 */ 285 aprint_naive("\n"); 286 aprint_normal("\n"); 287 288 if (periph->periph_quirks & PQUIRK_START) 289 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 290 291 error = scsipi_test_unit_ready(periph, 292 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 293 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 294 295 if (error) 296 result = SDGP_RESULT_OFFLINE; 297 else 298 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 299 aprint_normal_dev(sd->sc_dev, ""); 300 switch (result) { 301 case SDGP_RESULT_OK: 302 format_bytes(pbuf, sizeof(pbuf), 303 (u_int64_t)dp->disksize * dp->blksize); 304 aprint_normal( 305 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 306 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 307 (unsigned long long)dp->disksize); 308 break; 309 310 case SDGP_RESULT_OFFLINE: 311 aprint_normal("drive offline"); 312 break; 313 314 case SDGP_RESULT_UNFORMATTED: 315 aprint_normal("unformatted media"); 316 break; 317 318 #ifdef DIAGNOSTIC 319 default: 320 panic("sdattach: unknown result from get_parms"); 321 break; 322 #endif 323 } 324 aprint_normal("\n"); 325 326 /* 327 * Establish a shutdown hook so that we can ensure that 328 * our data has actually made it onto the platter at 329 * shutdown time. Note that this relies on the fact 330 * that the shutdown hooks at the "leaves" of the device tree 331 * are run, first (thus guaranteeing that our hook runs before 332 * our ancestors'). 333 */ 334 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 335 aprint_error_dev(self, "couldn't establish power handler\n"); 336 337 /* 338 * attach the device into the random source list 339 */ 340 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 341 RND_TYPE_DISK, RND_FLAG_DEFAULT); 342 343 /* Discover wedges on this disk. */ 344 dkwedge_discover(&sd->sc_dk); 345 346 /* 347 * Disk insertion and removal times can be a useful source 348 * of entropy, though the estimator should never _count_ 349 * these bits, on insertion, because the deltas to the 350 * nonexistent) previous event should never allow it. 351 */ 352 rnd_add_uint32(&sd->rnd_source, 0); 353 } 354 355 static int 356 sddetach(device_t self, int flags) 357 { 358 struct sd_softc *sd = device_private(self); 359 int s, bmaj, cmaj, i, mn, rc; 360 361 rnd_add_uint32(&sd->rnd_source, 0); 362 363 if ((rc = disk_begindetach(&sd->sc_dk, sdlastclose, self, flags)) != 0) 364 return rc; 365 366 /* locate the major number */ 367 bmaj = bdevsw_lookup_major(&sd_bdevsw); 368 cmaj = cdevsw_lookup_major(&sd_cdevsw); 369 370 /* Nuke the vnodes for any open instances */ 371 for (i = 0; i < MAXPARTITIONS; i++) { 372 mn = SDMINOR(device_unit(self), i); 373 vdevgone(bmaj, mn, mn, VBLK); 374 vdevgone(cmaj, mn, mn, VCHR); 375 } 376 377 /* kill any pending restart */ 378 callout_stop(&sd->sc_callout); 379 380 /* Delete all of our wedges. */ 381 dkwedge_delall(&sd->sc_dk); 382 383 s = splbio(); 384 385 /* Kill off any queued buffers. */ 386 bufq_drain(sd->buf_queue); 387 388 bufq_free(sd->buf_queue); 389 390 /* Kill off any pending commands. */ 391 scsipi_kill_pending(sd->sc_periph); 392 393 splx(s); 394 395 /* Detach from the disk list. */ 396 disk_detach(&sd->sc_dk); 397 disk_destroy(&sd->sc_dk); 398 399 callout_destroy(&sd->sc_callout); 400 401 pmf_device_deregister(self); 402 403 /* Unhook the entropy source. */ 404 rnd_detach_source(&sd->rnd_source); 405 406 return (0); 407 } 408 409 /* 410 * open the device. Make sure the partition info is a up-to-date as can be. 411 */ 412 static int 413 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 414 { 415 struct sd_softc *sd; 416 struct scsipi_periph *periph; 417 struct scsipi_adapter *adapt; 418 int unit, part; 419 int error; 420 421 unit = SDUNIT(dev); 422 sd = device_lookup_private(&sd_cd, unit); 423 if (sd == NULL) 424 return (ENXIO); 425 426 if (!device_is_active(sd->sc_dev)) 427 return (ENODEV); 428 429 part = SDPART(dev); 430 431 mutex_enter(&sd->sc_dk.dk_openlock); 432 433 /* 434 * If there are wedges, and this is not RAW_PART, then we 435 * need to fail. 436 */ 437 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 438 error = EBUSY; 439 goto bad1; 440 } 441 442 periph = sd->sc_periph; 443 adapt = periph->periph_channel->chan_adapter; 444 445 SC_DEBUG(periph, SCSIPI_DB1, 446 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, 447 sd_cd.cd_ndevs, part)); 448 449 /* 450 * If this is the first open of this device, add a reference 451 * to the adapter. 452 */ 453 if (sd->sc_dk.dk_openmask == 0 && 454 (error = scsipi_adapter_addref(adapt)) != 0) 455 goto bad1; 456 457 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 458 /* 459 * If any partition is open, but the disk has been invalidated, 460 * disallow further opens of non-raw partition 461 */ 462 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 463 (part != RAW_PART || fmt != S_IFCHR)) { 464 error = EIO; 465 goto bad2; 466 } 467 } else { 468 int silent; 469 470 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 471 silent = XS_CTL_SILENT; 472 else 473 silent = 0; 474 475 /* Check that it is still responding and ok. */ 476 error = scsipi_test_unit_ready(periph, 477 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 478 silent); 479 480 /* 481 * Start the pack spinning if necessary. Always allow the 482 * raw parition to be opened, for raw IOCTLs. Data transfers 483 * will check for SDEV_MEDIA_LOADED. 484 */ 485 if (error == EIO) { 486 int error2; 487 488 error2 = scsipi_start(periph, SSS_START, silent); 489 switch (error2) { 490 case 0: 491 error = 0; 492 break; 493 case EIO: 494 case EINVAL: 495 break; 496 default: 497 error = error2; 498 break; 499 } 500 } 501 if (error) { 502 if (silent && (flag & FSILENT) == 0) 503 goto out; 504 goto bad2; 505 } 506 507 periph->periph_flags |= PERIPH_OPEN; 508 509 if (periph->periph_flags & PERIPH_REMOVABLE) { 510 /* Lock the pack in. */ 511 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 512 XS_CTL_IGNORE_ILLEGAL_REQUEST | 513 XS_CTL_IGNORE_MEDIA_CHANGE | 514 XS_CTL_SILENT); 515 if (error) 516 goto bad3; 517 } 518 519 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 520 int param_error; 521 periph->periph_flags |= PERIPH_MEDIA_LOADED; 522 523 /* 524 * Load the physical device parameters. 525 * 526 * Note that if media is present but unformatted, 527 * we allow the open (so that it can be formatted!). 528 * The drive should refuse real I/O, if the media is 529 * unformatted. 530 */ 531 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 532 == SDGP_RESULT_OFFLINE) { 533 error = ENXIO; 534 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 535 goto bad3; 536 } 537 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 538 539 /* Load the partition info if not already loaded. */ 540 if (param_error == 0) { 541 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 542 error = EIO; 543 goto bad3; 544 } 545 SC_DEBUG(periph, SCSIPI_DB3, 546 ("Disklabel loaded ")); 547 } 548 } 549 } 550 551 /* Check that the partition exists. */ 552 if (part != RAW_PART && 553 (part >= sd->sc_dk.dk_label->d_npartitions || 554 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 555 error = ENXIO; 556 goto bad3; 557 } 558 559 out: /* Insure only one open at a time. */ 560 switch (fmt) { 561 case S_IFCHR: 562 sd->sc_dk.dk_copenmask |= (1 << part); 563 break; 564 case S_IFBLK: 565 sd->sc_dk.dk_bopenmask |= (1 << part); 566 break; 567 } 568 sd->sc_dk.dk_openmask = 569 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 570 571 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 572 mutex_exit(&sd->sc_dk.dk_openlock); 573 return (0); 574 575 bad3: 576 if (sd->sc_dk.dk_openmask == 0) { 577 if (periph->periph_flags & PERIPH_REMOVABLE) 578 scsipi_prevent(periph, SPAMR_ALLOW, 579 XS_CTL_IGNORE_ILLEGAL_REQUEST | 580 XS_CTL_IGNORE_MEDIA_CHANGE | 581 XS_CTL_SILENT); 582 periph->periph_flags &= ~PERIPH_OPEN; 583 } 584 585 bad2: 586 if (sd->sc_dk.dk_openmask == 0) 587 scsipi_adapter_delref(adapt); 588 589 bad1: 590 mutex_exit(&sd->sc_dk.dk_openlock); 591 return (error); 592 } 593 594 /* 595 * Caller must hold sd->sc_dk.dk_openlock. 596 */ 597 static int 598 sdlastclose(device_t self) 599 { 600 struct sd_softc *sd = device_private(self); 601 struct scsipi_periph *periph = sd->sc_periph; 602 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 603 604 /* 605 * If the disk cache needs flushing, and the disk supports 606 * it, do it now. 607 */ 608 if ((sd->flags & SDF_DIRTY) != 0) { 609 if (sd_flush(sd, 0)) { 610 aprint_error_dev(sd->sc_dev, 611 "cache synchronization failed\n"); 612 sd->flags &= ~SDF_FLUSHING; 613 } else 614 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 615 } 616 617 scsipi_wait_drain(periph); 618 619 if (periph->periph_flags & PERIPH_REMOVABLE) 620 scsipi_prevent(periph, SPAMR_ALLOW, 621 XS_CTL_IGNORE_ILLEGAL_REQUEST | 622 XS_CTL_IGNORE_NOT_READY | 623 XS_CTL_SILENT); 624 periph->periph_flags &= ~PERIPH_OPEN; 625 626 scsipi_wait_drain(periph); 627 628 scsipi_adapter_delref(adapt); 629 630 return 0; 631 } 632 633 /* 634 * close the device.. only called if we are the LAST occurence of an open 635 * device. Convenient now but usually a pain. 636 */ 637 static int 638 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 639 { 640 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 641 int part = SDPART(dev); 642 643 mutex_enter(&sd->sc_dk.dk_openlock); 644 switch (fmt) { 645 case S_IFCHR: 646 sd->sc_dk.dk_copenmask &= ~(1 << part); 647 break; 648 case S_IFBLK: 649 sd->sc_dk.dk_bopenmask &= ~(1 << part); 650 break; 651 } 652 sd->sc_dk.dk_openmask = 653 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 654 655 if (sd->sc_dk.dk_openmask == 0) 656 sdlastclose(sd->sc_dev); 657 658 mutex_exit(&sd->sc_dk.dk_openlock); 659 return (0); 660 } 661 662 /* 663 * Actually translate the requested transfer into one the physical driver 664 * can understand. The transfer is described by a buf and will include 665 * only one physical transfer. 666 */ 667 static void 668 sdstrategy(struct buf *bp) 669 { 670 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 671 struct scsipi_periph *periph = sd->sc_periph; 672 struct disklabel *lp; 673 daddr_t blkno; 674 int s; 675 bool sector_aligned; 676 677 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 678 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 679 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 680 /* 681 * If the device has been made invalid, error out 682 */ 683 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 684 !device_is_active(sd->sc_dev)) { 685 if (periph->periph_flags & PERIPH_OPEN) 686 bp->b_error = EIO; 687 else 688 bp->b_error = ENODEV; 689 goto done; 690 } 691 692 lp = sd->sc_dk.dk_label; 693 694 /* 695 * The transfer must be a whole number of blocks, offset must not be 696 * negative. 697 */ 698 if (lp->d_secsize == DEV_BSIZE) { 699 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 700 } else { 701 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 702 } 703 if (!sector_aligned || bp->b_blkno < 0) { 704 bp->b_error = EINVAL; 705 goto done; 706 } 707 /* 708 * If it's a null transfer, return immediatly 709 */ 710 if (bp->b_bcount == 0) 711 goto done; 712 713 /* 714 * Do bounds checking, adjust transfer. if error, process. 715 * If end of partition, just return. 716 */ 717 if (SDPART(bp->b_dev) == RAW_PART) { 718 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 719 sd->params.disksize512) <= 0) 720 goto done; 721 } else { 722 if (bounds_check_with_label(&sd->sc_dk, bp, 723 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 724 goto done; 725 } 726 727 /* 728 * Now convert the block number to absolute and put it in 729 * terms of the device's logical block size. 730 */ 731 if (lp->d_secsize == DEV_BSIZE) 732 blkno = bp->b_blkno; 733 else if (lp->d_secsize > DEV_BSIZE) 734 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 735 else 736 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 737 738 if (SDPART(bp->b_dev) != RAW_PART) 739 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 740 741 bp->b_rawblkno = blkno; 742 743 s = splbio(); 744 745 /* 746 * Place it in the queue of disk activities for this disk. 747 * 748 * XXX Only do disksort() if the current operating mode does not 749 * XXX include tagged queueing. 750 */ 751 bufq_put(sd->buf_queue, bp); 752 753 /* 754 * Tell the device to get going on the transfer if it's 755 * not doing anything, otherwise just wait for completion 756 */ 757 sdstart(sd->sc_periph); 758 759 splx(s); 760 return; 761 762 done: 763 /* 764 * Correctly set the buf to indicate a completed xfer 765 */ 766 bp->b_resid = bp->b_bcount; 767 biodone(bp); 768 } 769 770 /* 771 * sdstart looks to see if there is a buf waiting for the device 772 * and that the device is not already busy. If both are true, 773 * It dequeues the buf and creates a scsi command to perform the 774 * transfer in the buf. The transfer request will call scsipi_done 775 * on completion, which will in turn call this routine again 776 * so that the next queued transfer is performed. 777 * The bufs are queued by the strategy routine (sdstrategy) 778 * 779 * This routine is also called after other non-queued requests 780 * have been made of the scsi driver, to ensure that the queue 781 * continues to be drained. 782 * 783 * must be called at the correct (highish) spl level 784 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 785 */ 786 static void 787 sdstart(struct scsipi_periph *periph) 788 { 789 struct sd_softc *sd = device_private(periph->periph_dev); 790 struct disklabel *lp = sd->sc_dk.dk_label; 791 struct buf *bp = 0; 792 struct scsipi_rw_16 cmd16; 793 struct scsipi_rw_10 cmd_big; 794 struct scsi_rw_6 cmd_small; 795 struct scsipi_generic *cmdp; 796 struct scsipi_xfer *xs; 797 int nblks, cmdlen, error __diagused, flags; 798 799 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 800 /* 801 * Check if the device has room for another command 802 */ 803 while (periph->periph_active < periph->periph_openings) { 804 /* 805 * there is excess capacity, but a special waits 806 * It'll need the adapter as soon as we clear out of the 807 * way and let it run (user level wait). 808 */ 809 if (periph->periph_flags & PERIPH_WAITING) { 810 periph->periph_flags &= ~PERIPH_WAITING; 811 wakeup((void *)periph); 812 return; 813 } 814 815 /* 816 * If the device has become invalid, abort all the 817 * reads and writes until all files have been closed and 818 * re-opened 819 */ 820 if (__predict_false( 821 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 822 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 823 bp->b_error = EIO; 824 bp->b_resid = bp->b_bcount; 825 biodone(bp); 826 continue; 827 } else { 828 return; 829 } 830 } 831 832 /* 833 * See if there is a buf with work for us to do.. 834 */ 835 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 836 return; 837 838 /* 839 * We have a buf, now we should make a command. 840 */ 841 842 if (lp->d_secsize == DEV_BSIZE) 843 nblks = bp->b_bcount >> DEV_BSHIFT; 844 else 845 nblks = howmany(bp->b_bcount, lp->d_secsize); 846 847 /* 848 * Fill out the scsi command. Use the smallest CDB possible 849 * (6-byte, 10-byte, or 16-byte). 850 */ 851 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 852 ((nblks & 0xff) == nblks) && 853 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 854 /* 6-byte CDB */ 855 memset(&cmd_small, 0, sizeof(cmd_small)); 856 cmd_small.opcode = (bp->b_flags & B_READ) ? 857 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 858 _lto3b(bp->b_rawblkno, cmd_small.addr); 859 cmd_small.length = nblks & 0xff; 860 cmdlen = sizeof(cmd_small); 861 cmdp = (struct scsipi_generic *)&cmd_small; 862 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 863 /* 10-byte CDB */ 864 memset(&cmd_big, 0, sizeof(cmd_big)); 865 cmd_big.opcode = (bp->b_flags & B_READ) ? 866 READ_10 : WRITE_10; 867 _lto4b(bp->b_rawblkno, cmd_big.addr); 868 _lto2b(nblks, cmd_big.length); 869 cmdlen = sizeof(cmd_big); 870 cmdp = (struct scsipi_generic *)&cmd_big; 871 } else { 872 /* 16-byte CDB */ 873 memset(&cmd16, 0, sizeof(cmd16)); 874 cmd16.opcode = (bp->b_flags & B_READ) ? 875 READ_16 : WRITE_16; 876 _lto8b(bp->b_rawblkno, cmd16.addr); 877 _lto4b(nblks, cmd16.length); 878 cmdlen = sizeof(cmd16); 879 cmdp = (struct scsipi_generic *)&cmd16; 880 } 881 882 /* Instrumentation. */ 883 disk_busy(&sd->sc_dk); 884 885 /* 886 * Mark the disk dirty so that the cache will be 887 * flushed on close. 888 */ 889 if ((bp->b_flags & B_READ) == 0) 890 sd->flags |= SDF_DIRTY; 891 892 /* 893 * Figure out what flags to use. 894 */ 895 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 896 if (bp->b_flags & B_READ) 897 flags |= XS_CTL_DATA_IN; 898 else 899 flags |= XS_CTL_DATA_OUT; 900 901 /* 902 * Call the routine that chats with the adapter. 903 * Note: we cannot sleep as we may be an interrupt 904 */ 905 xs = scsipi_make_xs(periph, cmdp, cmdlen, 906 (u_char *)bp->b_data, bp->b_bcount, 907 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 908 if (__predict_false(xs == NULL)) { 909 /* 910 * out of memory. Keep this buffer in the queue, and 911 * retry later. 912 */ 913 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 914 periph); 915 return; 916 } 917 /* 918 * need to dequeue the buffer before queuing the command, 919 * because cdstart may be called recursively from the 920 * HBA driver 921 */ 922 #ifdef DIAGNOSTIC 923 if (bufq_get(sd->buf_queue) != bp) 924 panic("sdstart(): dequeued wrong buf"); 925 #else 926 bufq_get(sd->buf_queue); 927 #endif 928 error = scsipi_execute_xs(xs); 929 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 930 KASSERT(error == 0); 931 } 932 } 933 934 static void 935 sdrestart(void *v) 936 { 937 int s = splbio(); 938 sdstart((struct scsipi_periph *)v); 939 splx(s); 940 } 941 942 static void 943 sddone(struct scsipi_xfer *xs, int error) 944 { 945 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 946 struct buf *bp = xs->bp; 947 948 if (sd->flags & SDF_FLUSHING) { 949 /* Flush completed, no longer dirty. */ 950 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 951 } 952 953 if (bp) { 954 bp->b_error = error; 955 bp->b_resid = xs->resid; 956 if (error) { 957 /* on a read/write error bp->b_resid is zero, so fix */ 958 bp->b_resid = bp->b_bcount; 959 } 960 961 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 962 (bp->b_flags & B_READ)); 963 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 964 965 biodone(bp); 966 } 967 } 968 969 static void 970 sdminphys(struct buf *bp) 971 { 972 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 973 long xmax; 974 975 /* 976 * If the device is ancient, we want to make sure that 977 * the transfer fits into a 6-byte cdb. 978 * 979 * XXX Note that the SCSI-I spec says that 256-block transfers 980 * are allowed in a 6-byte read/write, and are specified 981 * by settng the "length" to 0. However, we're conservative 982 * here, allowing only 255-block transfers in case an 983 * ancient device gets confused by length == 0. A length of 0 984 * in a 10-byte read/write actually means 0 blocks. 985 */ 986 if ((sd->flags & SDF_ANCIENT) && 987 ((sd->sc_periph->periph_flags & 988 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 989 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 990 991 if (bp->b_bcount > xmax) 992 bp->b_bcount = xmax; 993 } 994 995 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 996 } 997 998 static int 999 sdread(dev_t dev, struct uio *uio, int ioflag) 1000 { 1001 1002 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 1003 } 1004 1005 static int 1006 sdwrite(dev_t dev, struct uio *uio, int ioflag) 1007 { 1008 1009 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1010 } 1011 1012 /* 1013 * Perform special action on behalf of the user 1014 * Knows about the internals of this device 1015 */ 1016 static int 1017 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1018 { 1019 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 1020 struct scsipi_periph *periph = sd->sc_periph; 1021 int part = SDPART(dev); 1022 int error; 1023 int s; 1024 #ifdef __HAVE_OLD_DISKLABEL 1025 struct disklabel *newlabel = NULL; 1026 #endif 1027 1028 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1029 1030 /* 1031 * If the device is not valid, some IOCTLs can still be 1032 * handled on the raw partition. Check this here. 1033 */ 1034 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1035 switch (cmd) { 1036 case DIOCKLABEL: 1037 case DIOCWLABEL: 1038 case DIOCLOCK: 1039 case DIOCEJECT: 1040 case ODIOCEJECT: 1041 case DIOCGCACHE: 1042 case DIOCSCACHE: 1043 case DIOCGSTRATEGY: 1044 case DIOCSSTRATEGY: 1045 case SCIOCIDENTIFY: 1046 case OSCIOCIDENTIFY: 1047 case SCIOCCOMMAND: 1048 case SCIOCDEBUG: 1049 if (part == RAW_PART) 1050 break; 1051 /* FALLTHROUGH */ 1052 default: 1053 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1054 return (ENODEV); 1055 else 1056 return (EIO); 1057 } 1058 } 1059 1060 error = disk_ioctl(&sd->sc_dk, dev, cmd, addr, flag, l); 1061 if (error != EPASSTHROUGH) 1062 return (error); 1063 1064 error = 0; 1065 switch (cmd) { 1066 case DIOCWDINFO: 1067 case DIOCSDINFO: 1068 #ifdef __HAVE_OLD_DISKLABEL 1069 case ODIOCWDINFO: 1070 case ODIOCSDINFO: 1071 #endif 1072 { 1073 struct disklabel *lp; 1074 1075 if ((flag & FWRITE) == 0) 1076 return (EBADF); 1077 1078 #ifdef __HAVE_OLD_DISKLABEL 1079 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1080 newlabel = malloc(sizeof *newlabel, M_TEMP, 1081 M_WAITOK | M_ZERO); 1082 if (newlabel == NULL) 1083 return EIO; 1084 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1085 lp = newlabel; 1086 } else 1087 #endif 1088 lp = (struct disklabel *)addr; 1089 1090 mutex_enter(&sd->sc_dk.dk_openlock); 1091 sd->flags |= SDF_LABELLING; 1092 1093 error = setdisklabel(sd->sc_dk.dk_label, 1094 lp, /*sd->sc_dk.dk_openmask : */0, 1095 sd->sc_dk.dk_cpulabel); 1096 if (error == 0) { 1097 if (cmd == DIOCWDINFO 1098 #ifdef __HAVE_OLD_DISKLABEL 1099 || cmd == ODIOCWDINFO 1100 #endif 1101 ) 1102 error = writedisklabel(SDLABELDEV(dev), 1103 sdstrategy, sd->sc_dk.dk_label, 1104 sd->sc_dk.dk_cpulabel); 1105 } 1106 1107 sd->flags &= ~SDF_LABELLING; 1108 mutex_exit(&sd->sc_dk.dk_openlock); 1109 #ifdef __HAVE_OLD_DISKLABEL 1110 if (newlabel != NULL) 1111 free(newlabel, M_TEMP); 1112 #endif 1113 return (error); 1114 } 1115 1116 case DIOCKLABEL: 1117 if (*(int *)addr) 1118 periph->periph_flags |= PERIPH_KEEP_LABEL; 1119 else 1120 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1121 return (0); 1122 1123 case DIOCWLABEL: 1124 if ((flag & FWRITE) == 0) 1125 return (EBADF); 1126 if (*(int *)addr) 1127 sd->flags |= SDF_WLABEL; 1128 else 1129 sd->flags &= ~SDF_WLABEL; 1130 return (0); 1131 1132 case DIOCLOCK: 1133 if (periph->periph_flags & PERIPH_REMOVABLE) 1134 return (scsipi_prevent(periph, 1135 (*(int *)addr) ? 1136 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1137 else 1138 return (ENOTTY); 1139 1140 case DIOCEJECT: 1141 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1142 return (ENOTTY); 1143 if (*(int *)addr == 0) { 1144 /* 1145 * Don't force eject: check that we are the only 1146 * partition open. If so, unlock it. 1147 */ 1148 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1149 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1150 sd->sc_dk.dk_openmask) { 1151 error = scsipi_prevent(periph, SPAMR_ALLOW, 1152 XS_CTL_IGNORE_NOT_READY); 1153 if (error) 1154 return (error); 1155 } else { 1156 return (EBUSY); 1157 } 1158 } 1159 /* FALLTHROUGH */ 1160 case ODIOCEJECT: 1161 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1162 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1163 1164 case DIOCGDEFLABEL: 1165 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1166 return (0); 1167 1168 #ifdef __HAVE_OLD_DISKLABEL 1169 case ODIOCGDEFLABEL: 1170 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1171 if (newlabel == NULL) 1172 return EIO; 1173 sdgetdefaultlabel(sd, newlabel); 1174 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1175 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1176 else 1177 error = ENOTTY; 1178 free(newlabel, M_TEMP); 1179 return error; 1180 #endif 1181 1182 case DIOCGCACHE: 1183 return (sd_getcache(sd, (int *) addr)); 1184 1185 case DIOCSCACHE: 1186 if ((flag & FWRITE) == 0) 1187 return (EBADF); 1188 return (sd_setcache(sd, *(int *) addr)); 1189 1190 case DIOCCACHESYNC: 1191 /* 1192 * XXX Do we really need to care about having a writable 1193 * file descriptor here? 1194 */ 1195 if ((flag & FWRITE) == 0) 1196 return (EBADF); 1197 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1198 error = sd_flush(sd, 0); 1199 if (error) 1200 sd->flags &= ~SDF_FLUSHING; 1201 else 1202 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1203 } 1204 return (error); 1205 1206 case DIOCGSTRATEGY: 1207 { 1208 struct disk_strategy *dks = addr; 1209 1210 s = splbio(); 1211 strlcpy(dks->dks_name, bufq_getstrategyname(sd->buf_queue), 1212 sizeof(dks->dks_name)); 1213 splx(s); 1214 dks->dks_paramlen = 0; 1215 1216 return 0; 1217 } 1218 1219 case DIOCSSTRATEGY: 1220 { 1221 struct disk_strategy *dks = addr; 1222 struct bufq_state *new_bufq; 1223 struct bufq_state *old_bufq; 1224 1225 if ((flag & FWRITE) == 0) { 1226 return EBADF; 1227 } 1228 1229 if (dks->dks_param != NULL) { 1230 return EINVAL; 1231 } 1232 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1233 error = bufq_alloc(&new_bufq, dks->dks_name, 1234 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1235 if (error) { 1236 return error; 1237 } 1238 s = splbio(); 1239 old_bufq = sd->buf_queue; 1240 bufq_move(new_bufq, old_bufq); 1241 sd->buf_queue = new_bufq; 1242 splx(s); 1243 bufq_free(old_bufq); 1244 1245 return 0; 1246 } 1247 1248 default: 1249 if (part != RAW_PART) 1250 return (ENOTTY); 1251 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1252 } 1253 1254 #ifdef DIAGNOSTIC 1255 panic("sdioctl: impossible"); 1256 #endif 1257 } 1258 1259 static void 1260 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1261 { 1262 1263 memset(lp, 0, sizeof(struct disklabel)); 1264 1265 lp->d_secsize = sd->params.blksize; 1266 lp->d_ntracks = sd->params.heads; 1267 lp->d_nsectors = sd->params.sectors; 1268 lp->d_ncylinders = sd->params.cyls; 1269 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1270 1271 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sd->sc_periph))) { 1272 case SCSIPI_BUSTYPE_SCSI: 1273 lp->d_type = DKTYPE_SCSI; 1274 break; 1275 case SCSIPI_BUSTYPE_ATAPI: 1276 lp->d_type = DKTYPE_ATAPI; 1277 break; 1278 } 1279 /* 1280 * XXX 1281 * We could probe the mode pages to figure out what kind of disc it is. 1282 * Is this worthwhile? 1283 */ 1284 strncpy(lp->d_typename, sd->name, 16); 1285 strncpy(lp->d_packname, "fictitious", 16); 1286 if (sd->params.disksize > UINT32_MAX) 1287 lp->d_secperunit = UINT32_MAX; 1288 else 1289 lp->d_secperunit = sd->params.disksize; 1290 lp->d_rpm = sd->params.rot_rate; 1291 lp->d_interleave = 1; 1292 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1293 D_REMOVABLE : 0; 1294 1295 lp->d_partitions[RAW_PART].p_offset = 0; 1296 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1297 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1298 lp->d_npartitions = RAW_PART + 1; 1299 1300 lp->d_magic = DISKMAGIC; 1301 lp->d_magic2 = DISKMAGIC; 1302 lp->d_checksum = dkcksum(lp); 1303 } 1304 1305 1306 /* 1307 * Load the label information on the named device 1308 */ 1309 static int 1310 sdgetdisklabel(struct sd_softc *sd) 1311 { 1312 struct disklabel *lp = sd->sc_dk.dk_label; 1313 const char *errstring; 1314 1315 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1316 1317 sdgetdefaultlabel(sd, lp); 1318 1319 if (lp->d_secpercyl == 0) { 1320 lp->d_secpercyl = 100; 1321 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1322 } 1323 1324 /* 1325 * Call the generic disklabel extraction routine 1326 */ 1327 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1328 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1329 if (errstring) { 1330 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1331 return EIO; 1332 } 1333 return 0; 1334 } 1335 1336 static bool 1337 sd_shutdown(device_t self, int how) 1338 { 1339 struct sd_softc *sd = device_private(self); 1340 1341 /* 1342 * If the disk cache needs to be flushed, and the disk supports 1343 * it, flush it. We're cold at this point, so we poll for 1344 * completion. 1345 */ 1346 if ((sd->flags & SDF_DIRTY) != 0) { 1347 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1348 aprint_error_dev(sd->sc_dev, 1349 "cache synchronization failed\n"); 1350 sd->flags &= ~SDF_FLUSHING; 1351 } else 1352 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1353 } 1354 return true; 1355 } 1356 1357 static bool 1358 sd_suspend(device_t dv, const pmf_qual_t *qual) 1359 { 1360 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1361 } 1362 1363 /* 1364 * Check Errors 1365 */ 1366 static int 1367 sd_interpret_sense(struct scsipi_xfer *xs) 1368 { 1369 struct scsipi_periph *periph = xs->xs_periph; 1370 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1371 struct sd_softc *sd = device_private(periph->periph_dev); 1372 int s, error, retval = EJUSTRETURN; 1373 1374 /* 1375 * If the periph is already recovering, just do the normal 1376 * error processing. 1377 */ 1378 if (periph->periph_flags & PERIPH_RECOVERING) 1379 return (retval); 1380 1381 /* 1382 * Ignore errors from accessing illegal fields (e.g. trying to 1383 * lock the door of a digicam, which doesn't have a door that 1384 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1385 */ 1386 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1387 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1388 sense->asc == 0x24 && 1389 sense->ascq == 0x00) { /* Illegal field in CDB */ 1390 if (!(xs->xs_control & XS_CTL_SILENT)) { 1391 scsipi_printaddr(periph); 1392 printf("no door lock\n"); 1393 } 1394 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1395 return (retval); 1396 } 1397 1398 1399 1400 /* 1401 * If the device is not open yet, let the generic code handle it. 1402 */ 1403 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1404 return (retval); 1405 1406 /* 1407 * If it isn't a extended or extended/deferred error, let 1408 * the generic code handle it. 1409 */ 1410 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1411 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1412 return (retval); 1413 1414 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1415 sense->asc == 0x4) { 1416 if (sense->ascq == 0x01) { 1417 /* 1418 * Unit In The Process Of Becoming Ready. 1419 */ 1420 printf("%s: waiting for pack to spin up...\n", 1421 device_xname(sd->sc_dev)); 1422 if (!callout_pending(&periph->periph_callout)) 1423 scsipi_periph_freeze(periph, 1); 1424 callout_reset(&periph->periph_callout, 1425 5 * hz, scsipi_periph_timed_thaw, periph); 1426 retval = ERESTART; 1427 } else if (sense->ascq == 0x02) { 1428 printf("%s: pack is stopped, restarting...\n", 1429 device_xname(sd->sc_dev)); 1430 s = splbio(); 1431 periph->periph_flags |= PERIPH_RECOVERING; 1432 splx(s); 1433 error = scsipi_start(periph, SSS_START, 1434 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1435 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1436 if (error) { 1437 aprint_error_dev(sd->sc_dev, 1438 "unable to restart pack\n"); 1439 retval = error; 1440 } else 1441 retval = ERESTART; 1442 s = splbio(); 1443 periph->periph_flags &= ~PERIPH_RECOVERING; 1444 splx(s); 1445 } 1446 } 1447 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1448 sense->asc == 0x31 && 1449 sense->ascq == 0x00) { /* maybe for any asq ? */ 1450 /* Medium Format Corrupted */ 1451 retval = EFTYPE; 1452 } 1453 return (retval); 1454 } 1455 1456 1457 static int 1458 sdsize(dev_t dev) 1459 { 1460 struct sd_softc *sd; 1461 int part, unit, omask; 1462 int size; 1463 1464 unit = SDUNIT(dev); 1465 sd = device_lookup_private(&sd_cd, unit); 1466 if (sd == NULL) 1467 return (-1); 1468 1469 if (!device_is_active(sd->sc_dev)) 1470 return (-1); 1471 1472 part = SDPART(dev); 1473 omask = sd->sc_dk.dk_openmask & (1 << part); 1474 1475 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1476 return (-1); 1477 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1478 size = -1; 1479 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1480 size = -1; 1481 else 1482 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1483 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1484 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1485 return (-1); 1486 return (size); 1487 } 1488 1489 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1490 static struct scsipi_xfer sx; 1491 static int sddoingadump; 1492 1493 /* 1494 * dump all of physical memory into the partition specified, starting 1495 * at offset 'dumplo' into the partition. 1496 */ 1497 static int 1498 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1499 { 1500 struct sd_softc *sd; /* disk unit to do the I/O */ 1501 struct disklabel *lp; /* disk's disklabel */ 1502 int unit, part; 1503 int sectorsize; /* size of a disk sector */ 1504 int nsects; /* number of sectors in partition */ 1505 int sectoff; /* sector offset of partition */ 1506 int totwrt; /* total number of sectors left to write */ 1507 int nwrt; /* current number of sectors to write */ 1508 struct scsipi_rw_10 cmd; /* write command */ 1509 struct scsipi_xfer *xs; /* ... convenience */ 1510 struct scsipi_periph *periph; 1511 struct scsipi_channel *chan; 1512 1513 /* Check if recursive dump; if so, punt. */ 1514 if (sddoingadump) 1515 return (EFAULT); 1516 1517 /* Mark as active early. */ 1518 sddoingadump = 1; 1519 1520 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1521 part = SDPART(dev); 1522 1523 /* Check for acceptable drive number. */ 1524 sd = device_lookup_private(&sd_cd, unit); 1525 if (sd == NULL) 1526 return (ENXIO); 1527 1528 if (!device_is_active(sd->sc_dev)) 1529 return (ENODEV); 1530 1531 periph = sd->sc_periph; 1532 chan = periph->periph_channel; 1533 1534 /* Make sure it was initialized. */ 1535 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1536 return (ENXIO); 1537 1538 /* Convert to disk sectors. Request must be a multiple of size. */ 1539 lp = sd->sc_dk.dk_label; 1540 sectorsize = lp->d_secsize; 1541 if ((size % sectorsize) != 0) 1542 return (EFAULT); 1543 totwrt = size / sectorsize; 1544 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1545 1546 nsects = lp->d_partitions[part].p_size; 1547 sectoff = lp->d_partitions[part].p_offset; 1548 1549 /* Check transfer bounds against partition size. */ 1550 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1551 return (EINVAL); 1552 1553 /* Offset block number to start of partition. */ 1554 blkno += sectoff; 1555 1556 xs = &sx; 1557 1558 while (totwrt > 0) { 1559 nwrt = totwrt; /* XXX */ 1560 #ifndef SD_DUMP_NOT_TRUSTED 1561 /* 1562 * Fill out the scsi command 1563 */ 1564 memset(&cmd, 0, sizeof(cmd)); 1565 cmd.opcode = WRITE_10; 1566 _lto4b(blkno, cmd.addr); 1567 _lto2b(nwrt, cmd.length); 1568 /* 1569 * Fill out the scsipi_xfer structure 1570 * Note: we cannot sleep as we may be an interrupt 1571 * don't use scsipi_command() as it may want to wait 1572 * for an xs. 1573 */ 1574 memset(xs, 0, sizeof(sx)); 1575 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1576 XS_CTL_DATA_OUT; 1577 xs->xs_status = 0; 1578 xs->xs_periph = periph; 1579 xs->xs_retries = SDRETRIES; 1580 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1581 xs->cmd = (struct scsipi_generic *)&cmd; 1582 xs->cmdlen = sizeof(cmd); 1583 xs->resid = nwrt * sectorsize; 1584 xs->error = XS_NOERROR; 1585 xs->bp = 0; 1586 xs->data = va; 1587 xs->datalen = nwrt * sectorsize; 1588 callout_init(&xs->xs_callout, 0); 1589 1590 /* 1591 * Pass all this info to the scsi driver. 1592 */ 1593 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1594 if ((xs->xs_status & XS_STS_DONE) == 0 || 1595 xs->error != XS_NOERROR) 1596 return (EIO); 1597 #else /* SD_DUMP_NOT_TRUSTED */ 1598 /* Let's just talk about this first... */ 1599 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1600 delay(500 * 1000); /* half a second */ 1601 #endif /* SD_DUMP_NOT_TRUSTED */ 1602 1603 /* update block count */ 1604 totwrt -= nwrt; 1605 blkno += nwrt; 1606 va = (char *)va + sectorsize * nwrt; 1607 } 1608 sddoingadump = 0; 1609 return (0); 1610 } 1611 1612 static int 1613 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1614 int page, int flags, int *big) 1615 { 1616 1617 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1618 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1619 *big = 1; 1620 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1621 size + sizeof(struct scsi_mode_parameter_header_10), 1622 flags, SDRETRIES, 6000); 1623 } else { 1624 *big = 0; 1625 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1626 size + sizeof(struct scsi_mode_parameter_header_6), 1627 flags, SDRETRIES, 6000); 1628 } 1629 } 1630 1631 static int 1632 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1633 int flags, int big) 1634 { 1635 1636 if (big) { 1637 struct scsi_mode_parameter_header_10 *header = sense; 1638 1639 _lto2b(0, header->data_length); 1640 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1641 size + sizeof(struct scsi_mode_parameter_header_10), 1642 flags, SDRETRIES, 6000); 1643 } else { 1644 struct scsi_mode_parameter_header_6 *header = sense; 1645 1646 header->data_length = 0; 1647 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1648 size + sizeof(struct scsi_mode_parameter_header_6), 1649 flags, SDRETRIES, 6000); 1650 } 1651 } 1652 1653 /* 1654 * sd_validate_blksize: 1655 * 1656 * Validate the block size. Print error if periph is specified, 1657 */ 1658 static int 1659 sd_validate_blksize(struct scsipi_periph *periph, int len) 1660 { 1661 1662 switch (len) { 1663 case 256: 1664 case 512: 1665 case 1024: 1666 case 2048: 1667 case 4096: 1668 return 1; 1669 } 1670 1671 if (periph) { 1672 scsipi_printaddr(periph); 1673 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1674 (len ^ (1 << (ffs(len) - 1))) ? 1675 "preposterous" : "unsupported", 1676 len, SD_DEFAULT_BLKSIZE); 1677 } 1678 1679 return 0; 1680 } 1681 1682 /* 1683 * sd_read_capacity: 1684 * 1685 * Find out from the device what its capacity is. 1686 */ 1687 static u_int64_t 1688 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1689 { 1690 union { 1691 struct scsipi_read_capacity_10 cmd; 1692 struct scsipi_read_capacity_16 cmd16; 1693 } cmd; 1694 union { 1695 struct scsipi_read_capacity_10_data data; 1696 struct scsipi_read_capacity_16_data data16; 1697 } *datap; 1698 uint64_t rv; 1699 1700 memset(&cmd, 0, sizeof(cmd)); 1701 cmd.cmd.opcode = READ_CAPACITY_10; 1702 1703 /* 1704 * Don't allocate data buffer on stack; 1705 * The lower driver layer might use the same stack and 1706 * if it uses region which is in the same cacheline, 1707 * cache flush ops against the data buffer won't work properly. 1708 */ 1709 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1710 if (datap == NULL) 1711 return 0; 1712 1713 /* 1714 * If the command works, interpret the result as a 4 byte 1715 * number of blocks 1716 */ 1717 rv = 0; 1718 memset(datap, 0, sizeof(datap->data)); 1719 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1720 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1721 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1722 goto out; 1723 1724 if (_4btol(datap->data.addr) != 0xffffffff) { 1725 *blksize = _4btol(datap->data.length); 1726 rv = _4btol(datap->data.addr) + 1; 1727 goto out; 1728 } 1729 1730 /* 1731 * Device is larger than can be reflected by READ CAPACITY (10). 1732 * Try READ CAPACITY (16). 1733 */ 1734 1735 memset(&cmd, 0, sizeof(cmd)); 1736 cmd.cmd16.opcode = READ_CAPACITY_16; 1737 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1738 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1739 1740 memset(datap, 0, sizeof(datap->data16)); 1741 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1742 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1743 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1744 goto out; 1745 1746 *blksize = _4btol(datap->data16.length); 1747 rv = _8btol(datap->data16.addr) + 1; 1748 1749 out: 1750 free(datap, M_TEMP); 1751 return rv; 1752 } 1753 1754 static int 1755 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1756 { 1757 struct { 1758 struct scsi_mode_parameter_header_6 header; 1759 /* no block descriptor */ 1760 u_int8_t pg_code; /* page code (should be 6) */ 1761 u_int8_t pg_length; /* page length (should be 11) */ 1762 u_int8_t wcd; /* bit0: cache disable */ 1763 u_int8_t lbs[2]; /* logical block size */ 1764 u_int8_t size[5]; /* number of log. blocks */ 1765 u_int8_t pp; /* power/performance */ 1766 u_int8_t flags; 1767 u_int8_t resvd; 1768 } scsipi_sense; 1769 u_int64_t blocks; 1770 int error, blksize; 1771 1772 /* 1773 * sd_read_capacity (ie "read capacity") and mode sense page 6 1774 * give the same information. Do both for now, and check 1775 * for consistency. 1776 * XXX probably differs for removable media 1777 */ 1778 dp->blksize = SD_DEFAULT_BLKSIZE; 1779 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1780 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1781 1782 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1783 &scsipi_sense.header, sizeof(scsipi_sense), 1784 flags, SDRETRIES, 6000); 1785 1786 if (error != 0) 1787 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1788 1789 dp->blksize = blksize; 1790 if (!sd_validate_blksize(NULL, dp->blksize)) 1791 dp->blksize = _2btol(scsipi_sense.lbs); 1792 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1793 dp->blksize = SD_DEFAULT_BLKSIZE; 1794 1795 /* 1796 * Create a pseudo-geometry. 1797 */ 1798 dp->heads = 64; 1799 dp->sectors = 32; 1800 dp->cyls = blocks / (dp->heads * dp->sectors); 1801 dp->disksize = _5btol(scsipi_sense.size); 1802 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1803 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1804 (unsigned long long)dp->disksize, 1805 (unsigned long long)blocks); 1806 dp->disksize = blocks; 1807 } 1808 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1809 1810 return (SDGP_RESULT_OK); 1811 } 1812 1813 /* 1814 * Get the scsi driver to send a full inquiry to the * device and use the 1815 * results to fill out the disk parameter structure. 1816 */ 1817 static int 1818 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1819 { 1820 u_int64_t blocks; 1821 int error, blksize; 1822 #if 0 1823 int i; 1824 u_int8_t *p; 1825 #endif 1826 1827 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1828 flags); 1829 if (blocks == 0) { 1830 struct scsipi_read_format_capacities cmd; 1831 struct { 1832 struct scsipi_capacity_list_header header; 1833 struct scsipi_capacity_descriptor desc; 1834 } __packed data; 1835 1836 memset(&cmd, 0, sizeof(cmd)); 1837 memset(&data, 0, sizeof(data)); 1838 cmd.opcode = READ_FORMAT_CAPACITIES; 1839 _lto2b(sizeof(data), cmd.length); 1840 1841 error = scsipi_command(sd->sc_periph, 1842 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1843 SDRETRIES, 20000, NULL, 1844 flags | XS_CTL_DATA_IN); 1845 if (error == EFTYPE) { 1846 /* Medium Format Corrupted, handle as not formatted */ 1847 return (SDGP_RESULT_UNFORMATTED); 1848 } 1849 if (error || data.header.length == 0) 1850 return (SDGP_RESULT_OFFLINE); 1851 1852 #if 0 1853 printf("rfc: length=%d\n", data.header.length); 1854 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"); 1855 #endif 1856 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1857 case SCSIPI_CAP_DESC_CODE_RESERVED: 1858 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1859 break; 1860 1861 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1862 return (SDGP_RESULT_UNFORMATTED); 1863 1864 case SCSIPI_CAP_DESC_CODE_NONE: 1865 return (SDGP_RESULT_OFFLINE); 1866 } 1867 1868 dp->disksize = blocks = _4btol(data.desc.nblks); 1869 if (blocks == 0) 1870 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1871 1872 blksize = _3btol(data.desc.blklen); 1873 1874 } else if (!sd_validate_blksize(NULL, blksize)) { 1875 struct sd_mode_sense_data scsipi_sense; 1876 int big, bsize; 1877 struct scsi_general_block_descriptor *bdesc; 1878 1879 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1880 error = sd_mode_sense(sd, 0, &scsipi_sense, 1881 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1882 if (!error) { 1883 if (big) { 1884 bdesc = (void *)(&scsipi_sense.header.big + 1); 1885 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1886 } else { 1887 bdesc = (void *)(&scsipi_sense.header.small + 1); 1888 bsize = scsipi_sense.header.small.blk_desc_len; 1889 } 1890 1891 #if 0 1892 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1893 printf("page 0 bsize=%d\n", bsize); 1894 printf("page 0 ok\n"); 1895 #endif 1896 1897 if (bsize >= 8) { 1898 blksize = _3btol(bdesc->blklen); 1899 } 1900 } 1901 } 1902 1903 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1904 blksize = SD_DEFAULT_BLKSIZE; 1905 1906 dp->blksize = blksize; 1907 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1908 return (0); 1909 } 1910 1911 static int 1912 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1913 { 1914 struct sd_mode_sense_data scsipi_sense; 1915 int error; 1916 int big, byte2; 1917 size_t poffset; 1918 union scsi_disk_pages *pages; 1919 1920 byte2 = SMS_DBD; 1921 again: 1922 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1923 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1924 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1925 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1926 flags | XS_CTL_SILENT, &big); 1927 if (error) { 1928 if (byte2 == SMS_DBD) { 1929 /* No result; try once more with DBD off */ 1930 byte2 = 0; 1931 goto again; 1932 } 1933 return (error); 1934 } 1935 1936 if (big) { 1937 poffset = sizeof scsipi_sense.header.big; 1938 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1939 } else { 1940 poffset = sizeof scsipi_sense.header.small; 1941 poffset += scsipi_sense.header.small.blk_desc_len; 1942 } 1943 1944 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1945 return ERESTART; 1946 1947 pages = (void *)((u_long)&scsipi_sense + poffset); 1948 #if 0 1949 { 1950 size_t i; 1951 u_int8_t *p; 1952 1953 printf("page 4 sense:"); 1954 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1955 i--, p++) 1956 printf(" %02x", *p); 1957 printf("\n"); 1958 printf("page 4 pg_code=%d sense=%p/%p\n", 1959 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1960 } 1961 #endif 1962 1963 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1964 return (ERESTART); 1965 1966 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1967 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1968 _3btol(pages->rigid_geometry.ncyl), 1969 pages->rigid_geometry.nheads, 1970 _2btol(pages->rigid_geometry.st_cyl_wp), 1971 _2btol(pages->rigid_geometry.st_cyl_rwc), 1972 _2btol(pages->rigid_geometry.land_zone))); 1973 1974 /* 1975 * KLUDGE!! (for zone recorded disks) 1976 * give a number of sectors so that sec * trks * cyls 1977 * is <= disk_size 1978 * can lead to wasted space! THINK ABOUT THIS ! 1979 */ 1980 dp->heads = pages->rigid_geometry.nheads; 1981 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1982 if (dp->heads == 0 || dp->cyls == 0) 1983 return (ERESTART); 1984 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1985 1986 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1987 if (dp->rot_rate == 0) 1988 dp->rot_rate = 3600; 1989 1990 #if 0 1991 printf("page 4 ok\n"); 1992 #endif 1993 return (0); 1994 } 1995 1996 static int 1997 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1998 { 1999 struct sd_mode_sense_data scsipi_sense; 2000 int error; 2001 int big, byte2; 2002 size_t poffset; 2003 union scsi_disk_pages *pages; 2004 2005 byte2 = SMS_DBD; 2006 again: 2007 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2008 error = sd_mode_sense(sd, 0, &scsipi_sense, 2009 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2010 sizeof(scsipi_sense.pages.flex_geometry), 5, 2011 flags | XS_CTL_SILENT, &big); 2012 if (error) { 2013 if (byte2 == SMS_DBD) { 2014 /* No result; try once more with DBD off */ 2015 byte2 = 0; 2016 goto again; 2017 } 2018 return (error); 2019 } 2020 2021 if (big) { 2022 poffset = sizeof scsipi_sense.header.big; 2023 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2024 } else { 2025 poffset = sizeof scsipi_sense.header.small; 2026 poffset += scsipi_sense.header.small.blk_desc_len; 2027 } 2028 2029 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2030 return ERESTART; 2031 2032 pages = (void *)((u_long)&scsipi_sense + poffset); 2033 #if 0 2034 { 2035 size_t i; 2036 u_int8_t *p; 2037 2038 printf("page 5 sense:"); 2039 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2040 i--, p++) 2041 printf(" %02x", *p); 2042 printf("\n"); 2043 printf("page 5 pg_code=%d sense=%p/%p\n", 2044 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2045 } 2046 #endif 2047 2048 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2049 return (ERESTART); 2050 2051 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2052 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2053 _3btol(pages->flex_geometry.ncyl), 2054 pages->flex_geometry.nheads, 2055 pages->flex_geometry.ph_sec_tr, 2056 _2btol(pages->flex_geometry.bytes_s))); 2057 2058 dp->heads = pages->flex_geometry.nheads; 2059 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2060 dp->sectors = pages->flex_geometry.ph_sec_tr; 2061 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2062 return (ERESTART); 2063 2064 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2065 if (dp->rot_rate == 0) 2066 dp->rot_rate = 3600; 2067 2068 #if 0 2069 printf("page 5 ok\n"); 2070 #endif 2071 return (0); 2072 } 2073 2074 static int 2075 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2076 { 2077 int error; 2078 2079 /* 2080 * If offline, the SDEV_MEDIA_LOADED flag will be 2081 * cleared by the caller if necessary. 2082 */ 2083 if (sd->type == T_SIMPLE_DIRECT) { 2084 error = sd_get_simplifiedparms(sd, dp, flags); 2085 if (!error) 2086 goto setprops; 2087 return (error); 2088 } 2089 2090 error = sd_get_capacity(sd, dp, flags); 2091 if (error) 2092 return (error); 2093 2094 if (sd->type == T_OPTICAL) 2095 goto page0; 2096 2097 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2098 if (!sd_get_parms_page5(sd, dp, flags) || 2099 !sd_get_parms_page4(sd, dp, flags)) 2100 goto setprops; 2101 } else { 2102 if (!sd_get_parms_page4(sd, dp, flags) || 2103 !sd_get_parms_page5(sd, dp, flags)) 2104 goto setprops; 2105 } 2106 2107 page0: 2108 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2109 /* Try calling driver's method for figuring out geometry. */ 2110 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2111 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2112 (sd->sc_periph, dp, dp->disksize)) { 2113 /* 2114 * Use adaptec standard fictitious geometry 2115 * this depends on which controller (e.g. 1542C is 2116 * different. but we have to put SOMETHING here..) 2117 */ 2118 dp->heads = 64; 2119 dp->sectors = 32; 2120 dp->cyls = dp->disksize / (64 * 32); 2121 } 2122 dp->rot_rate = 3600; 2123 2124 setprops: 2125 sd_set_geometry(sd); 2126 2127 return (SDGP_RESULT_OK); 2128 } 2129 2130 static int 2131 sd_flush(struct sd_softc *sd, int flags) 2132 { 2133 struct scsipi_periph *periph = sd->sc_periph; 2134 struct scsi_synchronize_cache_10 cmd; 2135 2136 /* 2137 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2138 * We issue with address 0 length 0, which should be 2139 * interpreted by the device as "all remaining blocks 2140 * starting at address 0". We ignore ILLEGAL REQUEST 2141 * in the event that the command is not supported by 2142 * the device, and poll for completion so that we know 2143 * that the cache has actually been flushed. 2144 * 2145 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2146 * command, as indicated by our quirks flags. 2147 * 2148 * XXX What about older devices? 2149 */ 2150 if (periph->periph_version < 2 || 2151 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2152 return (0); 2153 2154 sd->flags |= SDF_FLUSHING; 2155 memset(&cmd, 0, sizeof(cmd)); 2156 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2157 2158 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2159 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2160 } 2161 2162 static int 2163 sd_getcache(struct sd_softc *sd, int *bitsp) 2164 { 2165 struct scsipi_periph *periph = sd->sc_periph; 2166 struct sd_mode_sense_data scsipi_sense; 2167 int error, bits = 0; 2168 int big; 2169 union scsi_disk_pages *pages; 2170 2171 if (periph->periph_version < 2) 2172 return (EOPNOTSUPP); 2173 2174 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2175 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2176 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2177 if (error) 2178 return (error); 2179 2180 if (big) 2181 pages = (void *)(&scsipi_sense.header.big + 1); 2182 else 2183 pages = (void *)(&scsipi_sense.header.small + 1); 2184 2185 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2186 bits |= DKCACHE_READ; 2187 if (pages->caching_params.flags & CACHING_WCE) 2188 bits |= DKCACHE_WRITE; 2189 if (pages->caching_params.pg_code & PGCODE_PS) 2190 bits |= DKCACHE_SAVE; 2191 2192 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2193 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2194 sizeof(scsipi_sense.pages.caching_params), 2195 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2196 if (error == 0) { 2197 if (big) 2198 pages = (void *)(&scsipi_sense.header.big + 1); 2199 else 2200 pages = (void *)(&scsipi_sense.header.small + 1); 2201 2202 if (pages->caching_params.flags & CACHING_RCD) 2203 bits |= DKCACHE_RCHANGE; 2204 if (pages->caching_params.flags & CACHING_WCE) 2205 bits |= DKCACHE_WCHANGE; 2206 } 2207 2208 *bitsp = bits; 2209 2210 return (0); 2211 } 2212 2213 static int 2214 sd_setcache(struct sd_softc *sd, int bits) 2215 { 2216 struct scsipi_periph *periph = sd->sc_periph; 2217 struct sd_mode_sense_data scsipi_sense; 2218 int error; 2219 uint8_t oflags, byte2 = 0; 2220 int big; 2221 union scsi_disk_pages *pages; 2222 2223 if (periph->periph_version < 2) 2224 return (EOPNOTSUPP); 2225 2226 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2227 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2228 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2229 if (error) 2230 return (error); 2231 2232 if (big) 2233 pages = (void *)(&scsipi_sense.header.big + 1); 2234 else 2235 pages = (void *)(&scsipi_sense.header.small + 1); 2236 2237 oflags = pages->caching_params.flags; 2238 2239 if (bits & DKCACHE_READ) 2240 pages->caching_params.flags &= ~CACHING_RCD; 2241 else 2242 pages->caching_params.flags |= CACHING_RCD; 2243 2244 if (bits & DKCACHE_WRITE) 2245 pages->caching_params.flags |= CACHING_WCE; 2246 else 2247 pages->caching_params.flags &= ~CACHING_WCE; 2248 2249 if (oflags == pages->caching_params.flags) 2250 return (0); 2251 2252 pages->caching_params.pg_code &= PGCODE_MASK; 2253 2254 if (bits & DKCACHE_SAVE) 2255 byte2 |= SMS_SP; 2256 2257 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2258 sizeof(struct scsi_mode_page_header) + 2259 pages->caching_params.pg_length, 0, big)); 2260 } 2261 2262 static void 2263 sd_set_geometry(struct sd_softc *sd) 2264 { 2265 struct disk_geom *dg = &sd->sc_dk.dk_geom; 2266 2267 memset(dg, 0, sizeof(*dg)); 2268 2269 dg->dg_secperunit = sd->params.disksize; 2270 dg->dg_secsize = sd->params.blksize; 2271 dg->dg_nsectors = sd->params.sectors; 2272 dg->dg_ntracks = sd->params.heads; 2273 dg->dg_ncylinders = sd->params.cyls; 2274 2275 disk_set_info(sd->sc_dev, &sd->sc_dk, NULL); 2276 } 2277
Indexes created Tue Sep 23 14:10:03 GMT 2025