sd.c revision 1.305
1 /* $NetBSD: sd.c,v 1.305 2014/03/16 05:20:29 dholland 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 1.305 2014/03/16 05:20:29 dholland Exp $"); 51 52 #include "opt_scsi.h" 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/kernel.h> 57 #include <sys/file.h> 58 #include <sys/stat.h> 59 #include <sys/ioctl.h> 60 #include <sys/scsiio.h> 61 #include <sys/buf.h> 62 #include <sys/bufq.h> 63 #include <sys/uio.h> 64 #include <sys/malloc.h> 65 #include <sys/errno.h> 66 #include <sys/device.h> 67 #include <sys/disklabel.h> 68 #include <sys/disk.h> 69 #include <sys/proc.h> 70 #include <sys/conf.h> 71 #include <sys/vnode.h> 72 #include <sys/rnd.h> 73 #include <sys/cprng.h> 74 75 #include <dev/scsipi/scsi_spc.h> 76 #include <dev/scsipi/scsipi_all.h> 77 #include <dev/scsipi/scsi_all.h> 78 #include <dev/scsipi/scsipi_disk.h> 79 #include <dev/scsipi/scsi_disk.h> 80 #include <dev/scsipi/scsiconf.h> 81 #include <dev/scsipi/scsipi_base.h> 82 #include <dev/scsipi/sdvar.h> 83 84 #include <prop/proplib.h> 85 86 #define SDUNIT(dev) DISKUNIT(dev) 87 #define SDPART(dev) DISKPART(dev) 88 #define SDMINOR(unit, part) DISKMINOR(unit, part) 89 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 90 91 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 92 93 #define SD_DEFAULT_BLKSIZE 512 94 95 static void sdminphys(struct buf *); 96 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 97 static int sdgetdisklabel(struct sd_softc *); 98 static void sdstart(struct scsipi_periph *); 99 static void sdrestart(void *); 100 static void sddone(struct scsipi_xfer *, int); 101 static bool sd_suspend(device_t, const pmf_qual_t *); 102 static bool sd_shutdown(device_t, int); 103 static int sd_interpret_sense(struct scsipi_xfer *); 104 static int sdlastclose(device_t); 105 106 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 107 int, int *); 108 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 109 int); 110 static int sd_validate_blksize(struct scsipi_periph *, int); 111 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 112 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 113 int); 114 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 115 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 117 int); 118 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 119 int); 120 121 static int sd_flush(struct sd_softc *, int); 122 static int sd_getcache(struct sd_softc *, int *); 123 static int sd_setcache(struct sd_softc *, int); 124 125 static int sdmatch(device_t, cfdata_t, void *); 126 static void sdattach(device_t, device_t, void *); 127 static int sddetach(device_t, int); 128 static void sd_set_geometry(struct sd_softc *); 129 130 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 131 NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 132 133 extern struct cfdriver sd_cd; 134 135 static const struct scsipi_inquiry_pattern sd_patterns[] = { 136 {T_DIRECT, T_FIXED, 137 "", "", ""}, 138 {T_DIRECT, T_REMOV, 139 "", "", ""}, 140 {T_OPTICAL, T_FIXED, 141 "", "", ""}, 142 {T_OPTICAL, T_REMOV, 143 "", "", ""}, 144 {T_SIMPLE_DIRECT, T_FIXED, 145 "", "", ""}, 146 {T_SIMPLE_DIRECT, T_REMOV, 147 "", "", ""}, 148 }; 149 150 static dev_type_open(sdopen); 151 static dev_type_close(sdclose); 152 static dev_type_read(sdread); 153 static dev_type_write(sdwrite); 154 static dev_type_ioctl(sdioctl); 155 static dev_type_strategy(sdstrategy); 156 static dev_type_dump(sddump); 157 static dev_type_size(sdsize); 158 159 const struct bdevsw sd_bdevsw = { 160 .d_open = sdopen, 161 .d_close = sdclose, 162 .d_strategy = sdstrategy, 163 .d_ioctl = sdioctl, 164 .d_dump = sddump, 165 .d_psize = sdsize, 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_flag = D_DISK 181 }; 182 183 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 184 185 static const struct scsipi_periphsw sd_switch = { 186 sd_interpret_sense, /* check our error handler first */ 187 sdstart, /* have a queue, served by this */ 188 NULL, /* have no async handler */ 189 sddone, /* deal with stats at interrupt time */ 190 }; 191 192 struct sd_mode_sense_data { 193 /* 194 * XXX 195 * We are not going to parse this as-is -- it just has to be large 196 * enough. 197 */ 198 union { 199 struct scsi_mode_parameter_header_6 small; 200 struct scsi_mode_parameter_header_10 big; 201 } header; 202 struct scsi_general_block_descriptor blk_desc; 203 union scsi_disk_pages pages; 204 }; 205 206 /* 207 * The routine called by the low level scsi routine when it discovers 208 * A device suitable for this driver 209 */ 210 static int 211 sdmatch(device_t parent, cfdata_t match, 212 void *aux) 213 { 214 struct scsipibus_attach_args *sa = aux; 215 int priority; 216 217 (void)scsipi_inqmatch(&sa->sa_inqbuf, 218 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 219 sizeof(sd_patterns[0]), &priority); 220 221 return (priority); 222 } 223 224 /* 225 * Attach routine common to atapi & scsi. 226 */ 227 static void 228 sdattach(device_t parent, device_t self, void *aux) 229 { 230 struct sd_softc *sd = device_private(self); 231 struct scsipibus_attach_args *sa = aux; 232 struct scsipi_periph *periph = sa->sa_periph; 233 int error, result; 234 struct disk_parms *dp = &sd->params; 235 char pbuf[9]; 236 237 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 238 239 sd->sc_dev = self; 240 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 241 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 242 if (sd->type == T_SIMPLE_DIRECT) 243 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 244 245 if (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph)) == 246 SCSIPI_BUSTYPE_SCSI && periph->periph_version == 0) 247 sd->flags |= SDF_ANCIENT; 248 249 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 250 251 callout_init(&sd->sc_callout, 0); 252 253 /* 254 * Store information needed to contact our base driver 255 */ 256 sd->sc_periph = periph; 257 258 periph->periph_dev = sd->sc_dev; 259 periph->periph_switch = &sd_switch; 260 261 /* 262 * Increase our openings to the maximum-per-periph 263 * supported by the adapter. This will either be 264 * clamped down or grown by the adapter if necessary. 265 */ 266 periph->periph_openings = 267 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 268 periph->periph_flags |= PERIPH_GROW_OPENINGS; 269 270 /* 271 * Initialize and attach the disk structure. 272 */ 273 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 274 disk_attach(&sd->sc_dk); 275 276 /* 277 * Use the subdriver to request information regarding the drive. 278 */ 279 aprint_naive("\n"); 280 aprint_normal("\n"); 281 282 if (periph->periph_quirks & PQUIRK_START) 283 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 284 285 error = scsipi_test_unit_ready(periph, 286 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 287 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 288 289 if (error) 290 result = SDGP_RESULT_OFFLINE; 291 else 292 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 293 aprint_normal_dev(sd->sc_dev, ""); 294 switch (result) { 295 case SDGP_RESULT_OK: 296 format_bytes(pbuf, sizeof(pbuf), 297 (u_int64_t)dp->disksize * dp->blksize); 298 aprint_normal( 299 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 300 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 301 (unsigned long long)dp->disksize); 302 break; 303 304 case SDGP_RESULT_OFFLINE: 305 aprint_normal("drive offline"); 306 break; 307 308 case SDGP_RESULT_UNFORMATTED: 309 aprint_normal("unformatted media"); 310 break; 311 312 #ifdef DIAGNOSTIC 313 default: 314 panic("sdattach: unknown result from get_parms"); 315 break; 316 #endif 317 } 318 aprint_normal("\n"); 319 320 /* 321 * Establish a shutdown hook so that we can ensure that 322 * our data has actually made it onto the platter at 323 * shutdown time. Note that this relies on the fact 324 * that the shutdown hooks at the "leaves" of the device tree 325 * are run, first (thus guaranteeing that our hook runs before 326 * our ancestors'). 327 */ 328 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 329 aprint_error_dev(self, "couldn't establish power handler\n"); 330 331 /* 332 * attach the device into the random source list 333 */ 334 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 335 RND_TYPE_DISK, 0); 336 337 /* Discover wedges on this disk. */ 338 dkwedge_discover(&sd->sc_dk); 339 340 /* 341 * Disk insertion and removal times can be a useful source 342 * of entropy, though the estimator should never _count_ 343 * these bits, on insertion, because the deltas to the 344 * nonexistent) previous event should never allow it. 345 */ 346 rnd_add_uint32(&sd->rnd_source, 0); 347 } 348 349 static int 350 sddetach(device_t self, int flags) 351 { 352 struct sd_softc *sd = device_private(self); 353 int s, bmaj, cmaj, i, mn, rc; 354 355 rnd_add_uint32(&sd->rnd_source, 0); 356 357 if ((rc = disk_begindetach(&sd->sc_dk, sdlastclose, self, flags)) != 0) 358 return rc; 359 360 /* locate the major number */ 361 bmaj = bdevsw_lookup_major(&sd_bdevsw); 362 cmaj = cdevsw_lookup_major(&sd_cdevsw); 363 364 /* Nuke the vnodes for any open instances */ 365 for (i = 0; i < MAXPARTITIONS; i++) { 366 mn = SDMINOR(device_unit(self), i); 367 vdevgone(bmaj, mn, mn, VBLK); 368 vdevgone(cmaj, mn, mn, VCHR); 369 } 370 371 /* kill any pending restart */ 372 callout_stop(&sd->sc_callout); 373 374 /* Delete all of our wedges. */ 375 dkwedge_delall(&sd->sc_dk); 376 377 s = splbio(); 378 379 /* Kill off any queued buffers. */ 380 bufq_drain(sd->buf_queue); 381 382 bufq_free(sd->buf_queue); 383 384 /* Kill off any pending commands. */ 385 scsipi_kill_pending(sd->sc_periph); 386 387 splx(s); 388 389 /* Detach from the disk list. */ 390 disk_detach(&sd->sc_dk); 391 disk_destroy(&sd->sc_dk); 392 393 callout_destroy(&sd->sc_callout); 394 395 pmf_device_deregister(self); 396 397 /* Unhook the entropy source. */ 398 rnd_detach_source(&sd->rnd_source); 399 400 return (0); 401 } 402 403 /* 404 * open the device. Make sure the partition info is a up-to-date as can be. 405 */ 406 static int 407 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 408 { 409 struct sd_softc *sd; 410 struct scsipi_periph *periph; 411 struct scsipi_adapter *adapt; 412 int unit, part; 413 int error; 414 415 unit = SDUNIT(dev); 416 sd = device_lookup_private(&sd_cd, unit); 417 if (sd == NULL) 418 return (ENXIO); 419 420 if (!device_is_active(sd->sc_dev)) 421 return (ENODEV); 422 423 part = SDPART(dev); 424 425 mutex_enter(&sd->sc_dk.dk_openlock); 426 427 /* 428 * If there are wedges, and this is not RAW_PART, then we 429 * need to fail. 430 */ 431 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 432 error = EBUSY; 433 goto bad1; 434 } 435 436 periph = sd->sc_periph; 437 adapt = periph->periph_channel->chan_adapter; 438 439 SC_DEBUG(periph, SCSIPI_DB1, 440 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, 441 sd_cd.cd_ndevs, part)); 442 443 /* 444 * If this is the first open of this device, add a reference 445 * to the adapter. 446 */ 447 if (sd->sc_dk.dk_openmask == 0 && 448 (error = scsipi_adapter_addref(adapt)) != 0) 449 goto bad1; 450 451 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 452 /* 453 * If any partition is open, but the disk has been invalidated, 454 * disallow further opens of non-raw partition 455 */ 456 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 457 (part != RAW_PART || fmt != S_IFCHR)) { 458 error = EIO; 459 goto bad2; 460 } 461 } else { 462 int silent; 463 464 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 465 silent = XS_CTL_SILENT; 466 else 467 silent = 0; 468 469 /* Check that it is still responding and ok. */ 470 error = scsipi_test_unit_ready(periph, 471 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 472 silent); 473 474 /* 475 * Start the pack spinning if necessary. Always allow the 476 * raw parition to be opened, for raw IOCTLs. Data transfers 477 * will check for SDEV_MEDIA_LOADED. 478 */ 479 if (error == EIO) { 480 int error2; 481 482 error2 = scsipi_start(periph, SSS_START, silent); 483 switch (error2) { 484 case 0: 485 error = 0; 486 break; 487 case EIO: 488 case EINVAL: 489 break; 490 default: 491 error = error2; 492 break; 493 } 494 } 495 if (error) { 496 if (silent && (flag & FSILENT) == 0) 497 goto out; 498 goto bad2; 499 } 500 501 periph->periph_flags |= PERIPH_OPEN; 502 503 if (periph->periph_flags & PERIPH_REMOVABLE) { 504 /* Lock the pack in. */ 505 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 506 XS_CTL_IGNORE_ILLEGAL_REQUEST | 507 XS_CTL_IGNORE_MEDIA_CHANGE | 508 XS_CTL_SILENT); 509 if (error) 510 goto bad3; 511 } 512 513 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 514 int param_error; 515 periph->periph_flags |= PERIPH_MEDIA_LOADED; 516 517 /* 518 * Load the physical device parameters. 519 * 520 * Note that if media is present but unformatted, 521 * we allow the open (so that it can be formatted!). 522 * The drive should refuse real I/O, if the media is 523 * unformatted. 524 */ 525 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 526 == SDGP_RESULT_OFFLINE) { 527 error = ENXIO; 528 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 529 goto bad3; 530 } 531 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 532 533 /* Load the partition info if not already loaded. */ 534 if (param_error == 0) { 535 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 536 error = EIO; 537 goto bad3; 538 } 539 SC_DEBUG(periph, SCSIPI_DB3, 540 ("Disklabel loaded ")); 541 } 542 } 543 } 544 545 /* Check that the partition exists. */ 546 if (part != RAW_PART && 547 (part >= sd->sc_dk.dk_label->d_npartitions || 548 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 549 error = ENXIO; 550 goto bad3; 551 } 552 553 out: /* Insure only one open at a time. */ 554 switch (fmt) { 555 case S_IFCHR: 556 sd->sc_dk.dk_copenmask |= (1 << part); 557 break; 558 case S_IFBLK: 559 sd->sc_dk.dk_bopenmask |= (1 << part); 560 break; 561 } 562 sd->sc_dk.dk_openmask = 563 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 564 565 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 566 mutex_exit(&sd->sc_dk.dk_openlock); 567 return (0); 568 569 bad3: 570 if (sd->sc_dk.dk_openmask == 0) { 571 if (periph->periph_flags & PERIPH_REMOVABLE) 572 scsipi_prevent(periph, SPAMR_ALLOW, 573 XS_CTL_IGNORE_ILLEGAL_REQUEST | 574 XS_CTL_IGNORE_MEDIA_CHANGE | 575 XS_CTL_SILENT); 576 periph->periph_flags &= ~PERIPH_OPEN; 577 } 578 579 bad2: 580 if (sd->sc_dk.dk_openmask == 0) 581 scsipi_adapter_delref(adapt); 582 583 bad1: 584 mutex_exit(&sd->sc_dk.dk_openlock); 585 return (error); 586 } 587 588 /* 589 * Caller must hold sd->sc_dk.dk_openlock. 590 */ 591 static int 592 sdlastclose(device_t self) 593 { 594 struct sd_softc *sd = device_private(self); 595 struct scsipi_periph *periph = sd->sc_periph; 596 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 597 598 /* 599 * If the disk cache needs flushing, and the disk supports 600 * it, do it now. 601 */ 602 if ((sd->flags & SDF_DIRTY) != 0) { 603 if (sd_flush(sd, 0)) { 604 aprint_error_dev(sd->sc_dev, 605 "cache synchronization failed\n"); 606 sd->flags &= ~SDF_FLUSHING; 607 } else 608 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 609 } 610 611 scsipi_wait_drain(periph); 612 613 if (periph->periph_flags & PERIPH_REMOVABLE) 614 scsipi_prevent(periph, SPAMR_ALLOW, 615 XS_CTL_IGNORE_ILLEGAL_REQUEST | 616 XS_CTL_IGNORE_NOT_READY | 617 XS_CTL_SILENT); 618 periph->periph_flags &= ~PERIPH_OPEN; 619 620 scsipi_wait_drain(periph); 621 622 scsipi_adapter_delref(adapt); 623 624 return 0; 625 } 626 627 /* 628 * close the device.. only called if we are the LAST occurence of an open 629 * device. Convenient now but usually a pain. 630 */ 631 static int 632 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 633 { 634 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 635 int part = SDPART(dev); 636 637 mutex_enter(&sd->sc_dk.dk_openlock); 638 switch (fmt) { 639 case S_IFCHR: 640 sd->sc_dk.dk_copenmask &= ~(1 << part); 641 break; 642 case S_IFBLK: 643 sd->sc_dk.dk_bopenmask &= ~(1 << part); 644 break; 645 } 646 sd->sc_dk.dk_openmask = 647 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 648 649 if (sd->sc_dk.dk_openmask == 0) 650 sdlastclose(sd->sc_dev); 651 652 mutex_exit(&sd->sc_dk.dk_openlock); 653 return (0); 654 } 655 656 /* 657 * Actually translate the requested transfer into one the physical driver 658 * can understand. The transfer is described by a buf and will include 659 * only one physical transfer. 660 */ 661 static void 662 sdstrategy(struct buf *bp) 663 { 664 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 665 struct scsipi_periph *periph = sd->sc_periph; 666 struct disklabel *lp; 667 daddr_t blkno; 668 int s; 669 bool sector_aligned; 670 671 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 672 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 673 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 674 /* 675 * If the device has been made invalid, error out 676 */ 677 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 678 !device_is_active(sd->sc_dev)) { 679 if (periph->periph_flags & PERIPH_OPEN) 680 bp->b_error = EIO; 681 else 682 bp->b_error = ENODEV; 683 goto done; 684 } 685 686 lp = sd->sc_dk.dk_label; 687 688 /* 689 * The transfer must be a whole number of blocks, offset must not be 690 * negative. 691 */ 692 if (lp->d_secsize == DEV_BSIZE) { 693 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 694 } else { 695 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 696 } 697 if (!sector_aligned || bp->b_blkno < 0) { 698 bp->b_error = EINVAL; 699 goto done; 700 } 701 /* 702 * If it's a null transfer, return immediatly 703 */ 704 if (bp->b_bcount == 0) 705 goto done; 706 707 /* 708 * Do bounds checking, adjust transfer. if error, process. 709 * If end of partition, just return. 710 */ 711 if (SDPART(bp->b_dev) == RAW_PART) { 712 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 713 sd->params.disksize512) <= 0) 714 goto done; 715 } else { 716 if (bounds_check_with_label(&sd->sc_dk, bp, 717 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 718 goto done; 719 } 720 721 /* 722 * Now convert the block number to absolute and put it in 723 * terms of the device's logical block size. 724 */ 725 if (lp->d_secsize == DEV_BSIZE) 726 blkno = bp->b_blkno; 727 else if (lp->d_secsize > DEV_BSIZE) 728 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 729 else 730 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 731 732 if (SDPART(bp->b_dev) != RAW_PART) 733 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 734 735 bp->b_rawblkno = blkno; 736 737 s = splbio(); 738 739 /* 740 * Place it in the queue of disk activities for this disk. 741 * 742 * XXX Only do disksort() if the current operating mode does not 743 * XXX include tagged queueing. 744 */ 745 bufq_put(sd->buf_queue, bp); 746 747 /* 748 * Tell the device to get going on the transfer if it's 749 * not doing anything, otherwise just wait for completion 750 */ 751 sdstart(sd->sc_periph); 752 753 splx(s); 754 return; 755 756 done: 757 /* 758 * Correctly set the buf to indicate a completed xfer 759 */ 760 bp->b_resid = bp->b_bcount; 761 biodone(bp); 762 } 763 764 /* 765 * sdstart looks to see if there is a buf waiting for the device 766 * and that the device is not already busy. If both are true, 767 * It dequeues the buf and creates a scsi command to perform the 768 * transfer in the buf. The transfer request will call scsipi_done 769 * on completion, which will in turn call this routine again 770 * so that the next queued transfer is performed. 771 * The bufs are queued by the strategy routine (sdstrategy) 772 * 773 * This routine is also called after other non-queued requests 774 * have been made of the scsi driver, to ensure that the queue 775 * continues to be drained. 776 * 777 * must be called at the correct (highish) spl level 778 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 779 */ 780 static void 781 sdstart(struct scsipi_periph *periph) 782 { 783 struct sd_softc *sd = device_private(periph->periph_dev); 784 struct disklabel *lp = sd->sc_dk.dk_label; 785 struct buf *bp = 0; 786 struct scsipi_rw_16 cmd16; 787 struct scsipi_rw_10 cmd_big; 788 struct scsi_rw_6 cmd_small; 789 struct scsipi_generic *cmdp; 790 struct scsipi_xfer *xs; 791 int nblks, cmdlen, error __diagused, flags; 792 793 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 794 /* 795 * Check if the device has room for another command 796 */ 797 while (periph->periph_active < periph->periph_openings) { 798 /* 799 * there is excess capacity, but a special waits 800 * It'll need the adapter as soon as we clear out of the 801 * way and let it run (user level wait). 802 */ 803 if (periph->periph_flags & PERIPH_WAITING) { 804 periph->periph_flags &= ~PERIPH_WAITING; 805 wakeup((void *)periph); 806 return; 807 } 808 809 /* 810 * If the device has become invalid, abort all the 811 * reads and writes until all files have been closed and 812 * re-opened 813 */ 814 if (__predict_false( 815 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 816 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 817 bp->b_error = EIO; 818 bp->b_resid = bp->b_bcount; 819 biodone(bp); 820 continue; 821 } else { 822 return; 823 } 824 } 825 826 /* 827 * See if there is a buf with work for us to do.. 828 */ 829 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 830 return; 831 832 /* 833 * We have a buf, now we should make a command. 834 */ 835 836 if (lp->d_secsize == DEV_BSIZE) 837 nblks = bp->b_bcount >> DEV_BSHIFT; 838 else 839 nblks = howmany(bp->b_bcount, lp->d_secsize); 840 841 /* 842 * Fill out the scsi command. Use the smallest CDB possible 843 * (6-byte, 10-byte, or 16-byte). 844 */ 845 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 846 ((nblks & 0xff) == nblks) && 847 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 848 /* 6-byte CDB */ 849 memset(&cmd_small, 0, sizeof(cmd_small)); 850 cmd_small.opcode = (bp->b_flags & B_READ) ? 851 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 852 _lto3b(bp->b_rawblkno, cmd_small.addr); 853 cmd_small.length = nblks & 0xff; 854 cmdlen = sizeof(cmd_small); 855 cmdp = (struct scsipi_generic *)&cmd_small; 856 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 857 /* 10-byte CDB */ 858 memset(&cmd_big, 0, sizeof(cmd_big)); 859 cmd_big.opcode = (bp->b_flags & B_READ) ? 860 READ_10 : WRITE_10; 861 _lto4b(bp->b_rawblkno, cmd_big.addr); 862 _lto2b(nblks, cmd_big.length); 863 cmdlen = sizeof(cmd_big); 864 cmdp = (struct scsipi_generic *)&cmd_big; 865 } else { 866 /* 16-byte CDB */ 867 memset(&cmd16, 0, sizeof(cmd16)); 868 cmd16.opcode = (bp->b_flags & B_READ) ? 869 READ_16 : WRITE_16; 870 _lto8b(bp->b_rawblkno, cmd16.addr); 871 _lto4b(nblks, cmd16.length); 872 cmdlen = sizeof(cmd16); 873 cmdp = (struct scsipi_generic *)&cmd16; 874 } 875 876 /* Instrumentation. */ 877 disk_busy(&sd->sc_dk); 878 879 /* 880 * Mark the disk dirty so that the cache will be 881 * flushed on close. 882 */ 883 if ((bp->b_flags & B_READ) == 0) 884 sd->flags |= SDF_DIRTY; 885 886 /* 887 * Figure out what flags to use. 888 */ 889 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 890 if (bp->b_flags & B_READ) 891 flags |= XS_CTL_DATA_IN; 892 else 893 flags |= XS_CTL_DATA_OUT; 894 895 /* 896 * Call the routine that chats with the adapter. 897 * Note: we cannot sleep as we may be an interrupt 898 */ 899 xs = scsipi_make_xs(periph, cmdp, cmdlen, 900 (u_char *)bp->b_data, bp->b_bcount, 901 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 902 if (__predict_false(xs == NULL)) { 903 /* 904 * out of memory. Keep this buffer in the queue, and 905 * retry later. 906 */ 907 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 908 periph); 909 return; 910 } 911 /* 912 * need to dequeue the buffer before queuing the command, 913 * because cdstart may be called recursively from the 914 * HBA driver 915 */ 916 #ifdef DIAGNOSTIC 917 if (bufq_get(sd->buf_queue) != bp) 918 panic("sdstart(): dequeued wrong buf"); 919 #else 920 bufq_get(sd->buf_queue); 921 #endif 922 error = scsipi_execute_xs(xs); 923 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 924 KASSERT(error == 0); 925 } 926 } 927 928 static void 929 sdrestart(void *v) 930 { 931 int s = splbio(); 932 sdstart((struct scsipi_periph *)v); 933 splx(s); 934 } 935 936 static void 937 sddone(struct scsipi_xfer *xs, int error) 938 { 939 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 940 struct buf *bp = xs->bp; 941 942 if (sd->flags & SDF_FLUSHING) { 943 /* Flush completed, no longer dirty. */ 944 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 945 } 946 947 if (bp) { 948 bp->b_error = error; 949 bp->b_resid = xs->resid; 950 if (error) { 951 /* on a read/write error bp->b_resid is zero, so fix */ 952 bp->b_resid = bp->b_bcount; 953 } 954 955 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 956 (bp->b_flags & B_READ)); 957 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 958 959 biodone(bp); 960 } 961 } 962 963 static void 964 sdminphys(struct buf *bp) 965 { 966 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 967 long xmax; 968 969 /* 970 * If the device is ancient, we want to make sure that 971 * the transfer fits into a 6-byte cdb. 972 * 973 * XXX Note that the SCSI-I spec says that 256-block transfers 974 * are allowed in a 6-byte read/write, and are specified 975 * by settng the "length" to 0. However, we're conservative 976 * here, allowing only 255-block transfers in case an 977 * ancient device gets confused by length == 0. A length of 0 978 * in a 10-byte read/write actually means 0 blocks. 979 */ 980 if ((sd->flags & SDF_ANCIENT) && 981 ((sd->sc_periph->periph_flags & 982 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 983 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 984 985 if (bp->b_bcount > xmax) 986 bp->b_bcount = xmax; 987 } 988 989 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 990 } 991 992 static int 993 sdread(dev_t dev, struct uio *uio, int ioflag) 994 { 995 996 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 997 } 998 999 static int 1000 sdwrite(dev_t dev, struct uio *uio, int ioflag) 1001 { 1002 1003 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1004 } 1005 1006 /* 1007 * Perform special action on behalf of the user 1008 * Knows about the internals of this device 1009 */ 1010 static int 1011 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1012 { 1013 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 1014 struct scsipi_periph *periph = sd->sc_periph; 1015 int part = SDPART(dev); 1016 int error; 1017 int s; 1018 #ifdef __HAVE_OLD_DISKLABEL 1019 struct disklabel *newlabel = NULL; 1020 #endif 1021 1022 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1023 1024 /* 1025 * If the device is not valid, some IOCTLs can still be 1026 * handled on the raw partition. Check this here. 1027 */ 1028 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1029 switch (cmd) { 1030 case DIOCKLABEL: 1031 case DIOCWLABEL: 1032 case DIOCLOCK: 1033 case DIOCEJECT: 1034 case ODIOCEJECT: 1035 case DIOCGCACHE: 1036 case DIOCSCACHE: 1037 case DIOCGSTRATEGY: 1038 case DIOCSSTRATEGY: 1039 case SCIOCIDENTIFY: 1040 case OSCIOCIDENTIFY: 1041 case SCIOCCOMMAND: 1042 case SCIOCDEBUG: 1043 if (part == RAW_PART) 1044 break; 1045 /* FALLTHROUGH */ 1046 default: 1047 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1048 return (ENODEV); 1049 else 1050 return (EIO); 1051 } 1052 } 1053 1054 error = disk_ioctl(&sd->sc_dk, cmd, addr, flag, l); 1055 if (error != EPASSTHROUGH) 1056 return (error); 1057 1058 error = 0; 1059 switch (cmd) { 1060 case DIOCGDINFO: 1061 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1062 return (0); 1063 1064 #ifdef __HAVE_OLD_DISKLABEL 1065 case ODIOCGDINFO: 1066 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1067 if (newlabel == NULL) 1068 return EIO; 1069 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1070 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1071 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1072 else 1073 error = ENOTTY; 1074 free(newlabel, M_TEMP); 1075 return error; 1076 #endif 1077 1078 case DIOCGPART: 1079 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1080 ((struct partinfo *)addr)->part = 1081 &sd->sc_dk.dk_label->d_partitions[part]; 1082 return (0); 1083 1084 case DIOCWDINFO: 1085 case DIOCSDINFO: 1086 #ifdef __HAVE_OLD_DISKLABEL 1087 case ODIOCWDINFO: 1088 case ODIOCSDINFO: 1089 #endif 1090 { 1091 struct disklabel *lp; 1092 1093 if ((flag & FWRITE) == 0) 1094 return (EBADF); 1095 1096 #ifdef __HAVE_OLD_DISKLABEL 1097 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1098 newlabel = malloc(sizeof *newlabel, M_TEMP, 1099 M_WAITOK | M_ZERO); 1100 if (newlabel == NULL) 1101 return EIO; 1102 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1103 lp = newlabel; 1104 } else 1105 #endif 1106 lp = (struct disklabel *)addr; 1107 1108 mutex_enter(&sd->sc_dk.dk_openlock); 1109 sd->flags |= SDF_LABELLING; 1110 1111 error = setdisklabel(sd->sc_dk.dk_label, 1112 lp, /*sd->sc_dk.dk_openmask : */0, 1113 sd->sc_dk.dk_cpulabel); 1114 if (error == 0) { 1115 if (cmd == DIOCWDINFO 1116 #ifdef __HAVE_OLD_DISKLABEL 1117 || cmd == ODIOCWDINFO 1118 #endif 1119 ) 1120 error = writedisklabel(SDLABELDEV(dev), 1121 sdstrategy, sd->sc_dk.dk_label, 1122 sd->sc_dk.dk_cpulabel); 1123 } 1124 1125 sd->flags &= ~SDF_LABELLING; 1126 mutex_exit(&sd->sc_dk.dk_openlock); 1127 #ifdef __HAVE_OLD_DISKLABEL 1128 if (newlabel != NULL) 1129 free(newlabel, M_TEMP); 1130 #endif 1131 return (error); 1132 } 1133 1134 case DIOCKLABEL: 1135 if (*(int *)addr) 1136 periph->periph_flags |= PERIPH_KEEP_LABEL; 1137 else 1138 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1139 return (0); 1140 1141 case DIOCWLABEL: 1142 if ((flag & FWRITE) == 0) 1143 return (EBADF); 1144 if (*(int *)addr) 1145 sd->flags |= SDF_WLABEL; 1146 else 1147 sd->flags &= ~SDF_WLABEL; 1148 return (0); 1149 1150 case DIOCLOCK: 1151 if (periph->periph_flags & PERIPH_REMOVABLE) 1152 return (scsipi_prevent(periph, 1153 (*(int *)addr) ? 1154 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1155 else 1156 return (ENOTTY); 1157 1158 case DIOCEJECT: 1159 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1160 return (ENOTTY); 1161 if (*(int *)addr == 0) { 1162 /* 1163 * Don't force eject: check that we are the only 1164 * partition open. If so, unlock it. 1165 */ 1166 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1167 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1168 sd->sc_dk.dk_openmask) { 1169 error = scsipi_prevent(periph, SPAMR_ALLOW, 1170 XS_CTL_IGNORE_NOT_READY); 1171 if (error) 1172 return (error); 1173 } else { 1174 return (EBUSY); 1175 } 1176 } 1177 /* FALLTHROUGH */ 1178 case ODIOCEJECT: 1179 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1180 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1181 1182 case DIOCGDEFLABEL: 1183 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1184 return (0); 1185 1186 #ifdef __HAVE_OLD_DISKLABEL 1187 case ODIOCGDEFLABEL: 1188 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1189 if (newlabel == NULL) 1190 return EIO; 1191 sdgetdefaultlabel(sd, newlabel); 1192 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1193 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1194 else 1195 error = ENOTTY; 1196 free(newlabel, M_TEMP); 1197 return error; 1198 #endif 1199 1200 case DIOCGCACHE: 1201 return (sd_getcache(sd, (int *) addr)); 1202 1203 case DIOCSCACHE: 1204 if ((flag & FWRITE) == 0) 1205 return (EBADF); 1206 return (sd_setcache(sd, *(int *) addr)); 1207 1208 case DIOCCACHESYNC: 1209 /* 1210 * XXX Do we really need to care about having a writable 1211 * file descriptor here? 1212 */ 1213 if ((flag & FWRITE) == 0) 1214 return (EBADF); 1215 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1216 error = sd_flush(sd, 0); 1217 if (error) 1218 sd->flags &= ~SDF_FLUSHING; 1219 else 1220 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1221 } 1222 return (error); 1223 1224 case DIOCAWEDGE: 1225 { 1226 struct dkwedge_info *dkw = (void *) addr; 1227 1228 if ((flag & FWRITE) == 0) 1229 return (EBADF); 1230 1231 /* If the ioctl happens here, the parent is us. */ 1232 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1233 sizeof(dkw->dkw_parent)); 1234 return (dkwedge_add(dkw)); 1235 } 1236 1237 case DIOCDWEDGE: 1238 { 1239 struct dkwedge_info *dkw = (void *) addr; 1240 1241 if ((flag & FWRITE) == 0) 1242 return (EBADF); 1243 1244 /* If the ioctl happens here, the parent is us. */ 1245 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1246 sizeof(dkw->dkw_parent)); 1247 return (dkwedge_del(dkw)); 1248 } 1249 1250 case DIOCLWEDGES: 1251 { 1252 struct dkwedge_list *dkwl = (void *) addr; 1253 1254 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1255 } 1256 1257 case DIOCGSTRATEGY: 1258 { 1259 struct disk_strategy *dks = addr; 1260 1261 s = splbio(); 1262 strlcpy(dks->dks_name, bufq_getstrategyname(sd->buf_queue), 1263 sizeof(dks->dks_name)); 1264 splx(s); 1265 dks->dks_paramlen = 0; 1266 1267 return 0; 1268 } 1269 1270 case DIOCSSTRATEGY: 1271 { 1272 struct disk_strategy *dks = addr; 1273 struct bufq_state *new; 1274 struct bufq_state *old; 1275 1276 if ((flag & FWRITE) == 0) { 1277 return EBADF; 1278 } 1279 1280 if (dks->dks_param != NULL) { 1281 return EINVAL; 1282 } 1283 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1284 error = bufq_alloc(&new, dks->dks_name, 1285 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1286 if (error) { 1287 return error; 1288 } 1289 s = splbio(); 1290 old = sd->buf_queue; 1291 bufq_move(new, old); 1292 sd->buf_queue = new; 1293 splx(s); 1294 bufq_free(old); 1295 1296 return 0; 1297 } 1298 1299 default: 1300 if (part != RAW_PART) 1301 return (ENOTTY); 1302 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1303 } 1304 1305 #ifdef DIAGNOSTIC 1306 panic("sdioctl: impossible"); 1307 #endif 1308 } 1309 1310 static void 1311 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1312 { 1313 1314 memset(lp, 0, sizeof(struct disklabel)); 1315 1316 lp->d_secsize = sd->params.blksize; 1317 lp->d_ntracks = sd->params.heads; 1318 lp->d_nsectors = sd->params.sectors; 1319 lp->d_ncylinders = sd->params.cyls; 1320 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1321 1322 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sd->sc_periph))) { 1323 case SCSIPI_BUSTYPE_SCSI: 1324 lp->d_type = DTYPE_SCSI; 1325 break; 1326 case SCSIPI_BUSTYPE_ATAPI: 1327 lp->d_type = DTYPE_ATAPI; 1328 break; 1329 } 1330 /* 1331 * XXX 1332 * We could probe the mode pages to figure out what kind of disc it is. 1333 * Is this worthwhile? 1334 */ 1335 strncpy(lp->d_typename, sd->name, 16); 1336 strncpy(lp->d_packname, "fictitious", 16); 1337 if (sd->params.disksize > UINT32_MAX) 1338 lp->d_secperunit = UINT32_MAX; 1339 else 1340 lp->d_secperunit = sd->params.disksize; 1341 lp->d_rpm = sd->params.rot_rate; 1342 lp->d_interleave = 1; 1343 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1344 D_REMOVABLE : 0; 1345 1346 lp->d_partitions[RAW_PART].p_offset = 0; 1347 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1348 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1349 lp->d_npartitions = RAW_PART + 1; 1350 1351 lp->d_magic = DISKMAGIC; 1352 lp->d_magic2 = DISKMAGIC; 1353 lp->d_checksum = dkcksum(lp); 1354 } 1355 1356 1357 /* 1358 * Load the label information on the named device 1359 */ 1360 static int 1361 sdgetdisklabel(struct sd_softc *sd) 1362 { 1363 struct disklabel *lp = sd->sc_dk.dk_label; 1364 const char *errstring; 1365 1366 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1367 1368 sdgetdefaultlabel(sd, lp); 1369 1370 if (lp->d_secpercyl == 0) { 1371 lp->d_secpercyl = 100; 1372 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1373 } 1374 1375 /* 1376 * Call the generic disklabel extraction routine 1377 */ 1378 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1379 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1380 if (errstring) { 1381 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1382 return EIO; 1383 } 1384 return 0; 1385 } 1386 1387 static bool 1388 sd_shutdown(device_t self, int how) 1389 { 1390 struct sd_softc *sd = device_private(self); 1391 1392 /* 1393 * If the disk cache needs to be flushed, and the disk supports 1394 * it, flush it. We're cold at this point, so we poll for 1395 * completion. 1396 */ 1397 if ((sd->flags & SDF_DIRTY) != 0) { 1398 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1399 aprint_error_dev(sd->sc_dev, 1400 "cache synchronization failed\n"); 1401 sd->flags &= ~SDF_FLUSHING; 1402 } else 1403 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1404 } 1405 return true; 1406 } 1407 1408 static bool 1409 sd_suspend(device_t dv, const pmf_qual_t *qual) 1410 { 1411 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1412 } 1413 1414 /* 1415 * Check Errors 1416 */ 1417 static int 1418 sd_interpret_sense(struct scsipi_xfer *xs) 1419 { 1420 struct scsipi_periph *periph = xs->xs_periph; 1421 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1422 struct sd_softc *sd = device_private(periph->periph_dev); 1423 int s, error, retval = EJUSTRETURN; 1424 1425 /* 1426 * If the periph is already recovering, just do the normal 1427 * error processing. 1428 */ 1429 if (periph->periph_flags & PERIPH_RECOVERING) 1430 return (retval); 1431 1432 /* 1433 * Ignore errors from accessing illegal fields (e.g. trying to 1434 * lock the door of a digicam, which doesn't have a door that 1435 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1436 */ 1437 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1438 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1439 sense->asc == 0x24 && 1440 sense->ascq == 0x00) { /* Illegal field in CDB */ 1441 if (!(xs->xs_control & XS_CTL_SILENT)) { 1442 scsipi_printaddr(periph); 1443 printf("no door lock\n"); 1444 } 1445 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1446 return (retval); 1447 } 1448 1449 1450 1451 /* 1452 * If the device is not open yet, let the generic code handle it. 1453 */ 1454 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1455 return (retval); 1456 1457 /* 1458 * If it isn't a extended or extended/deferred error, let 1459 * the generic code handle it. 1460 */ 1461 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1462 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1463 return (retval); 1464 1465 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1466 sense->asc == 0x4) { 1467 if (sense->ascq == 0x01) { 1468 /* 1469 * Unit In The Process Of Becoming Ready. 1470 */ 1471 printf("%s: waiting for pack to spin up...\n", 1472 device_xname(sd->sc_dev)); 1473 if (!callout_pending(&periph->periph_callout)) 1474 scsipi_periph_freeze(periph, 1); 1475 callout_reset(&periph->periph_callout, 1476 5 * hz, scsipi_periph_timed_thaw, periph); 1477 retval = ERESTART; 1478 } else if (sense->ascq == 0x02) { 1479 printf("%s: pack is stopped, restarting...\n", 1480 device_xname(sd->sc_dev)); 1481 s = splbio(); 1482 periph->periph_flags |= PERIPH_RECOVERING; 1483 splx(s); 1484 error = scsipi_start(periph, SSS_START, 1485 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1486 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1487 if (error) { 1488 aprint_error_dev(sd->sc_dev, 1489 "unable to restart pack\n"); 1490 retval = error; 1491 } else 1492 retval = ERESTART; 1493 s = splbio(); 1494 periph->periph_flags &= ~PERIPH_RECOVERING; 1495 splx(s); 1496 } 1497 } 1498 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1499 sense->asc == 0x31 && 1500 sense->ascq == 0x00) { /* maybe for any asq ? */ 1501 /* Medium Format Corrupted */ 1502 retval = EFTYPE; 1503 } 1504 return (retval); 1505 } 1506 1507 1508 static int 1509 sdsize(dev_t dev) 1510 { 1511 struct sd_softc *sd; 1512 int part, unit, omask; 1513 int size; 1514 1515 unit = SDUNIT(dev); 1516 sd = device_lookup_private(&sd_cd, unit); 1517 if (sd == NULL) 1518 return (-1); 1519 1520 if (!device_is_active(sd->sc_dev)) 1521 return (-1); 1522 1523 part = SDPART(dev); 1524 omask = sd->sc_dk.dk_openmask & (1 << part); 1525 1526 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1527 return (-1); 1528 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1529 size = -1; 1530 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1531 size = -1; 1532 else 1533 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1534 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1535 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1536 return (-1); 1537 return (size); 1538 } 1539 1540 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1541 static struct scsipi_xfer sx; 1542 static int sddoingadump; 1543 1544 /* 1545 * dump all of physical memory into the partition specified, starting 1546 * at offset 'dumplo' into the partition. 1547 */ 1548 static int 1549 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1550 { 1551 struct sd_softc *sd; /* disk unit to do the I/O */ 1552 struct disklabel *lp; /* disk's disklabel */ 1553 int unit, part; 1554 int sectorsize; /* size of a disk sector */ 1555 int nsects; /* number of sectors in partition */ 1556 int sectoff; /* sector offset of partition */ 1557 int totwrt; /* total number of sectors left to write */ 1558 int nwrt; /* current number of sectors to write */ 1559 struct scsipi_rw_10 cmd; /* write command */ 1560 struct scsipi_xfer *xs; /* ... convenience */ 1561 struct scsipi_periph *periph; 1562 struct scsipi_channel *chan; 1563 1564 /* Check if recursive dump; if so, punt. */ 1565 if (sddoingadump) 1566 return (EFAULT); 1567 1568 /* Mark as active early. */ 1569 sddoingadump = 1; 1570 1571 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1572 part = SDPART(dev); 1573 1574 /* Check for acceptable drive number. */ 1575 sd = device_lookup_private(&sd_cd, unit); 1576 if (sd == NULL) 1577 return (ENXIO); 1578 1579 if (!device_is_active(sd->sc_dev)) 1580 return (ENODEV); 1581 1582 periph = sd->sc_periph; 1583 chan = periph->periph_channel; 1584 1585 /* Make sure it was initialized. */ 1586 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1587 return (ENXIO); 1588 1589 /* Convert to disk sectors. Request must be a multiple of size. */ 1590 lp = sd->sc_dk.dk_label; 1591 sectorsize = lp->d_secsize; 1592 if ((size % sectorsize) != 0) 1593 return (EFAULT); 1594 totwrt = size / sectorsize; 1595 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1596 1597 nsects = lp->d_partitions[part].p_size; 1598 sectoff = lp->d_partitions[part].p_offset; 1599 1600 /* Check transfer bounds against partition size. */ 1601 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1602 return (EINVAL); 1603 1604 /* Offset block number to start of partition. */ 1605 blkno += sectoff; 1606 1607 xs = &sx; 1608 1609 while (totwrt > 0) { 1610 nwrt = totwrt; /* XXX */ 1611 #ifndef SD_DUMP_NOT_TRUSTED 1612 /* 1613 * Fill out the scsi command 1614 */ 1615 memset(&cmd, 0, sizeof(cmd)); 1616 cmd.opcode = WRITE_10; 1617 _lto4b(blkno, cmd.addr); 1618 _lto2b(nwrt, cmd.length); 1619 /* 1620 * Fill out the scsipi_xfer structure 1621 * Note: we cannot sleep as we may be an interrupt 1622 * don't use scsipi_command() as it may want to wait 1623 * for an xs. 1624 */ 1625 memset(xs, 0, sizeof(sx)); 1626 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1627 XS_CTL_DATA_OUT; 1628 xs->xs_status = 0; 1629 xs->xs_periph = periph; 1630 xs->xs_retries = SDRETRIES; 1631 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1632 xs->cmd = (struct scsipi_generic *)&cmd; 1633 xs->cmdlen = sizeof(cmd); 1634 xs->resid = nwrt * sectorsize; 1635 xs->error = XS_NOERROR; 1636 xs->bp = 0; 1637 xs->data = va; 1638 xs->datalen = nwrt * sectorsize; 1639 callout_init(&xs->xs_callout, 0); 1640 1641 /* 1642 * Pass all this info to the scsi driver. 1643 */ 1644 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1645 if ((xs->xs_status & XS_STS_DONE) == 0 || 1646 xs->error != XS_NOERROR) 1647 return (EIO); 1648 #else /* SD_DUMP_NOT_TRUSTED */ 1649 /* Let's just talk about this first... */ 1650 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1651 delay(500 * 1000); /* half a second */ 1652 #endif /* SD_DUMP_NOT_TRUSTED */ 1653 1654 /* update block count */ 1655 totwrt -= nwrt; 1656 blkno += nwrt; 1657 va = (char *)va + sectorsize * nwrt; 1658 } 1659 sddoingadump = 0; 1660 return (0); 1661 } 1662 1663 static int 1664 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1665 int page, int flags, int *big) 1666 { 1667 1668 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1669 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1670 *big = 1; 1671 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1672 size + sizeof(struct scsi_mode_parameter_header_10), 1673 flags, SDRETRIES, 6000); 1674 } else { 1675 *big = 0; 1676 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1677 size + sizeof(struct scsi_mode_parameter_header_6), 1678 flags, SDRETRIES, 6000); 1679 } 1680 } 1681 1682 static int 1683 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1684 int flags, int big) 1685 { 1686 1687 if (big) { 1688 struct scsi_mode_parameter_header_10 *header = sense; 1689 1690 _lto2b(0, header->data_length); 1691 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1692 size + sizeof(struct scsi_mode_parameter_header_10), 1693 flags, SDRETRIES, 6000); 1694 } else { 1695 struct scsi_mode_parameter_header_6 *header = sense; 1696 1697 header->data_length = 0; 1698 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1699 size + sizeof(struct scsi_mode_parameter_header_6), 1700 flags, SDRETRIES, 6000); 1701 } 1702 } 1703 1704 /* 1705 * sd_validate_blksize: 1706 * 1707 * Validate the block size. Print error if periph is specified, 1708 */ 1709 static int 1710 sd_validate_blksize(struct scsipi_periph *periph, int len) 1711 { 1712 1713 switch (len) { 1714 case 256: 1715 case 512: 1716 case 1024: 1717 case 2048: 1718 case 4096: 1719 return 1; 1720 } 1721 1722 if (periph) { 1723 scsipi_printaddr(periph); 1724 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1725 (len ^ (1 << (ffs(len) - 1))) ? 1726 "preposterous" : "unsupported", 1727 len, SD_DEFAULT_BLKSIZE); 1728 } 1729 1730 return 0; 1731 } 1732 1733 /* 1734 * sd_read_capacity: 1735 * 1736 * Find out from the device what its capacity is. 1737 */ 1738 static u_int64_t 1739 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1740 { 1741 union { 1742 struct scsipi_read_capacity_10 cmd; 1743 struct scsipi_read_capacity_16 cmd16; 1744 } cmd; 1745 union { 1746 struct scsipi_read_capacity_10_data data; 1747 struct scsipi_read_capacity_16_data data16; 1748 } *datap; 1749 uint64_t rv; 1750 1751 memset(&cmd, 0, sizeof(cmd)); 1752 cmd.cmd.opcode = READ_CAPACITY_10; 1753 1754 /* 1755 * Don't allocate data buffer on stack; 1756 * The lower driver layer might use the same stack and 1757 * if it uses region which is in the same cacheline, 1758 * cache flush ops against the data buffer won't work properly. 1759 */ 1760 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1761 if (datap == NULL) 1762 return 0; 1763 1764 /* 1765 * If the command works, interpret the result as a 4 byte 1766 * number of blocks 1767 */ 1768 rv = 0; 1769 memset(datap, 0, sizeof(datap->data)); 1770 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1771 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1772 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1773 goto out; 1774 1775 if (_4btol(datap->data.addr) != 0xffffffff) { 1776 *blksize = _4btol(datap->data.length); 1777 rv = _4btol(datap->data.addr) + 1; 1778 goto out; 1779 } 1780 1781 /* 1782 * Device is larger than can be reflected by READ CAPACITY (10). 1783 * Try READ CAPACITY (16). 1784 */ 1785 1786 memset(&cmd, 0, sizeof(cmd)); 1787 cmd.cmd16.opcode = READ_CAPACITY_16; 1788 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1789 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1790 1791 memset(datap, 0, sizeof(datap->data16)); 1792 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1793 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1794 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1795 goto out; 1796 1797 *blksize = _4btol(datap->data16.length); 1798 rv = _8btol(datap->data16.addr) + 1; 1799 1800 out: 1801 free(datap, M_TEMP); 1802 return rv; 1803 } 1804 1805 static int 1806 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1807 { 1808 struct { 1809 struct scsi_mode_parameter_header_6 header; 1810 /* no block descriptor */ 1811 u_int8_t pg_code; /* page code (should be 6) */ 1812 u_int8_t pg_length; /* page length (should be 11) */ 1813 u_int8_t wcd; /* bit0: cache disable */ 1814 u_int8_t lbs[2]; /* logical block size */ 1815 u_int8_t size[5]; /* number of log. blocks */ 1816 u_int8_t pp; /* power/performance */ 1817 u_int8_t flags; 1818 u_int8_t resvd; 1819 } scsipi_sense; 1820 u_int64_t blocks; 1821 int error, blksize; 1822 1823 /* 1824 * sd_read_capacity (ie "read capacity") and mode sense page 6 1825 * give the same information. Do both for now, and check 1826 * for consistency. 1827 * XXX probably differs for removable media 1828 */ 1829 dp->blksize = SD_DEFAULT_BLKSIZE; 1830 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1831 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1832 1833 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1834 &scsipi_sense.header, sizeof(scsipi_sense), 1835 flags, SDRETRIES, 6000); 1836 1837 if (error != 0) 1838 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1839 1840 dp->blksize = blksize; 1841 if (!sd_validate_blksize(NULL, dp->blksize)) 1842 dp->blksize = _2btol(scsipi_sense.lbs); 1843 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1844 dp->blksize = SD_DEFAULT_BLKSIZE; 1845 1846 /* 1847 * Create a pseudo-geometry. 1848 */ 1849 dp->heads = 64; 1850 dp->sectors = 32; 1851 dp->cyls = blocks / (dp->heads * dp->sectors); 1852 dp->disksize = _5btol(scsipi_sense.size); 1853 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1854 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1855 (unsigned long long)dp->disksize, 1856 (unsigned long long)blocks); 1857 dp->disksize = blocks; 1858 } 1859 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1860 1861 return (SDGP_RESULT_OK); 1862 } 1863 1864 /* 1865 * Get the scsi driver to send a full inquiry to the * device and use the 1866 * results to fill out the disk parameter structure. 1867 */ 1868 static int 1869 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1870 { 1871 u_int64_t blocks; 1872 int error, blksize; 1873 #if 0 1874 int i; 1875 u_int8_t *p; 1876 #endif 1877 1878 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1879 flags); 1880 if (blocks == 0) { 1881 struct scsipi_read_format_capacities cmd; 1882 struct { 1883 struct scsipi_capacity_list_header header; 1884 struct scsipi_capacity_descriptor desc; 1885 } __packed data; 1886 1887 memset(&cmd, 0, sizeof(cmd)); 1888 memset(&data, 0, sizeof(data)); 1889 cmd.opcode = READ_FORMAT_CAPACITIES; 1890 _lto2b(sizeof(data), cmd.length); 1891 1892 error = scsipi_command(sd->sc_periph, 1893 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1894 SDRETRIES, 20000, NULL, 1895 flags | XS_CTL_DATA_IN); 1896 if (error == EFTYPE) { 1897 /* Medium Format Corrupted, handle as not formatted */ 1898 return (SDGP_RESULT_UNFORMATTED); 1899 } 1900 if (error || data.header.length == 0) 1901 return (SDGP_RESULT_OFFLINE); 1902 1903 #if 0 1904 printf("rfc: length=%d\n", data.header.length); 1905 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"); 1906 #endif 1907 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1908 case SCSIPI_CAP_DESC_CODE_RESERVED: 1909 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1910 break; 1911 1912 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1913 return (SDGP_RESULT_UNFORMATTED); 1914 1915 case SCSIPI_CAP_DESC_CODE_NONE: 1916 return (SDGP_RESULT_OFFLINE); 1917 } 1918 1919 dp->disksize = blocks = _4btol(data.desc.nblks); 1920 if (blocks == 0) 1921 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1922 1923 blksize = _3btol(data.desc.blklen); 1924 1925 } else if (!sd_validate_blksize(NULL, blksize)) { 1926 struct sd_mode_sense_data scsipi_sense; 1927 int big, bsize; 1928 struct scsi_general_block_descriptor *bdesc; 1929 1930 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1931 error = sd_mode_sense(sd, 0, &scsipi_sense, 1932 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1933 if (!error) { 1934 if (big) { 1935 bdesc = (void *)(&scsipi_sense.header.big + 1); 1936 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1937 } else { 1938 bdesc = (void *)(&scsipi_sense.header.small + 1); 1939 bsize = scsipi_sense.header.small.blk_desc_len; 1940 } 1941 1942 #if 0 1943 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1944 printf("page 0 bsize=%d\n", bsize); 1945 printf("page 0 ok\n"); 1946 #endif 1947 1948 if (bsize >= 8) { 1949 blksize = _3btol(bdesc->blklen); 1950 } 1951 } 1952 } 1953 1954 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1955 blksize = SD_DEFAULT_BLKSIZE; 1956 1957 dp->blksize = blksize; 1958 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1959 return (0); 1960 } 1961 1962 static int 1963 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1964 { 1965 struct sd_mode_sense_data scsipi_sense; 1966 int error; 1967 int big, byte2; 1968 size_t poffset; 1969 union scsi_disk_pages *pages; 1970 1971 byte2 = SMS_DBD; 1972 again: 1973 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1974 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1975 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1976 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1977 flags | XS_CTL_SILENT, &big); 1978 if (error) { 1979 if (byte2 == SMS_DBD) { 1980 /* No result; try once more with DBD off */ 1981 byte2 = 0; 1982 goto again; 1983 } 1984 return (error); 1985 } 1986 1987 if (big) { 1988 poffset = sizeof scsipi_sense.header.big; 1989 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1990 } else { 1991 poffset = sizeof scsipi_sense.header.small; 1992 poffset += scsipi_sense.header.small.blk_desc_len; 1993 } 1994 1995 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1996 return ERESTART; 1997 1998 pages = (void *)((u_long)&scsipi_sense + poffset); 1999 #if 0 2000 { 2001 size_t i; 2002 u_int8_t *p; 2003 2004 printf("page 4 sense:"); 2005 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2006 i--, p++) 2007 printf(" %02x", *p); 2008 printf("\n"); 2009 printf("page 4 pg_code=%d sense=%p/%p\n", 2010 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 2011 } 2012 #endif 2013 2014 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 2015 return (ERESTART); 2016 2017 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2018 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 2019 _3btol(pages->rigid_geometry.ncyl), 2020 pages->rigid_geometry.nheads, 2021 _2btol(pages->rigid_geometry.st_cyl_wp), 2022 _2btol(pages->rigid_geometry.st_cyl_rwc), 2023 _2btol(pages->rigid_geometry.land_zone))); 2024 2025 /* 2026 * KLUDGE!! (for zone recorded disks) 2027 * give a number of sectors so that sec * trks * cyls 2028 * is <= disk_size 2029 * can lead to wasted space! THINK ABOUT THIS ! 2030 */ 2031 dp->heads = pages->rigid_geometry.nheads; 2032 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 2033 if (dp->heads == 0 || dp->cyls == 0) 2034 return (ERESTART); 2035 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 2036 2037 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2038 if (dp->rot_rate == 0) 2039 dp->rot_rate = 3600; 2040 2041 #if 0 2042 printf("page 4 ok\n"); 2043 #endif 2044 return (0); 2045 } 2046 2047 static int 2048 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 2049 { 2050 struct sd_mode_sense_data scsipi_sense; 2051 int error; 2052 int big, byte2; 2053 size_t poffset; 2054 union scsi_disk_pages *pages; 2055 2056 byte2 = SMS_DBD; 2057 again: 2058 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2059 error = sd_mode_sense(sd, 0, &scsipi_sense, 2060 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2061 sizeof(scsipi_sense.pages.flex_geometry), 5, 2062 flags | XS_CTL_SILENT, &big); 2063 if (error) { 2064 if (byte2 == SMS_DBD) { 2065 /* No result; try once more with DBD off */ 2066 byte2 = 0; 2067 goto again; 2068 } 2069 return (error); 2070 } 2071 2072 if (big) { 2073 poffset = sizeof scsipi_sense.header.big; 2074 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2075 } else { 2076 poffset = sizeof scsipi_sense.header.small; 2077 poffset += scsipi_sense.header.small.blk_desc_len; 2078 } 2079 2080 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2081 return ERESTART; 2082 2083 pages = (void *)((u_long)&scsipi_sense + poffset); 2084 #if 0 2085 { 2086 size_t i; 2087 u_int8_t *p; 2088 2089 printf("page 5 sense:"); 2090 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2091 i--, p++) 2092 printf(" %02x", *p); 2093 printf("\n"); 2094 printf("page 5 pg_code=%d sense=%p/%p\n", 2095 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2096 } 2097 #endif 2098 2099 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2100 return (ERESTART); 2101 2102 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2103 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2104 _3btol(pages->flex_geometry.ncyl), 2105 pages->flex_geometry.nheads, 2106 pages->flex_geometry.ph_sec_tr, 2107 _2btol(pages->flex_geometry.bytes_s))); 2108 2109 dp->heads = pages->flex_geometry.nheads; 2110 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2111 dp->sectors = pages->flex_geometry.ph_sec_tr; 2112 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2113 return (ERESTART); 2114 2115 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2116 if (dp->rot_rate == 0) 2117 dp->rot_rate = 3600; 2118 2119 #if 0 2120 printf("page 5 ok\n"); 2121 #endif 2122 return (0); 2123 } 2124 2125 static int 2126 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2127 { 2128 int error; 2129 2130 /* 2131 * If offline, the SDEV_MEDIA_LOADED flag will be 2132 * cleared by the caller if necessary. 2133 */ 2134 if (sd->type == T_SIMPLE_DIRECT) { 2135 error = sd_get_simplifiedparms(sd, dp, flags); 2136 if (!error) 2137 disk_blocksize(&sd->sc_dk, dp->blksize); 2138 return (error); 2139 } 2140 2141 error = sd_get_capacity(sd, dp, flags); 2142 if (error) 2143 return (error); 2144 2145 disk_blocksize(&sd->sc_dk, dp->blksize); 2146 2147 if (sd->type == T_OPTICAL) 2148 goto page0; 2149 2150 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2151 if (!sd_get_parms_page5(sd, dp, flags) || 2152 !sd_get_parms_page4(sd, dp, flags)) 2153 goto setprops; 2154 } else { 2155 if (!sd_get_parms_page4(sd, dp, flags) || 2156 !sd_get_parms_page5(sd, dp, flags)) 2157 goto setprops; 2158 } 2159 2160 page0: 2161 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2162 /* Try calling driver's method for figuring out geometry. */ 2163 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2164 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2165 (sd->sc_periph, dp, dp->disksize)) { 2166 /* 2167 * Use adaptec standard fictitious geometry 2168 * this depends on which controller (e.g. 1542C is 2169 * different. but we have to put SOMETHING here..) 2170 */ 2171 dp->heads = 64; 2172 dp->sectors = 32; 2173 dp->cyls = dp->disksize / (64 * 32); 2174 } 2175 dp->rot_rate = 3600; 2176 2177 setprops: 2178 sd_set_geometry(sd); 2179 2180 return (SDGP_RESULT_OK); 2181 } 2182 2183 static int 2184 sd_flush(struct sd_softc *sd, int flags) 2185 { 2186 struct scsipi_periph *periph = sd->sc_periph; 2187 struct scsi_synchronize_cache_10 cmd; 2188 2189 /* 2190 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2191 * We issue with address 0 length 0, which should be 2192 * interpreted by the device as "all remaining blocks 2193 * starting at address 0". We ignore ILLEGAL REQUEST 2194 * in the event that the command is not supported by 2195 * the device, and poll for completion so that we know 2196 * that the cache has actually been flushed. 2197 * 2198 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2199 * command, as indicated by our quirks flags. 2200 * 2201 * XXX What about older devices? 2202 */ 2203 if (periph->periph_version < 2 || 2204 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2205 return (0); 2206 2207 sd->flags |= SDF_FLUSHING; 2208 memset(&cmd, 0, sizeof(cmd)); 2209 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2210 2211 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2212 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2213 } 2214 2215 static int 2216 sd_getcache(struct sd_softc *sd, int *bitsp) 2217 { 2218 struct scsipi_periph *periph = sd->sc_periph; 2219 struct sd_mode_sense_data scsipi_sense; 2220 int error, bits = 0; 2221 int big; 2222 union scsi_disk_pages *pages; 2223 2224 if (periph->periph_version < 2) 2225 return (EOPNOTSUPP); 2226 2227 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2228 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2229 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2230 if (error) 2231 return (error); 2232 2233 if (big) 2234 pages = (void *)(&scsipi_sense.header.big + 1); 2235 else 2236 pages = (void *)(&scsipi_sense.header.small + 1); 2237 2238 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2239 bits |= DKCACHE_READ; 2240 if (pages->caching_params.flags & CACHING_WCE) 2241 bits |= DKCACHE_WRITE; 2242 if (pages->caching_params.pg_code & PGCODE_PS) 2243 bits |= DKCACHE_SAVE; 2244 2245 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2246 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2247 sizeof(scsipi_sense.pages.caching_params), 2248 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2249 if (error == 0) { 2250 if (big) 2251 pages = (void *)(&scsipi_sense.header.big + 1); 2252 else 2253 pages = (void *)(&scsipi_sense.header.small + 1); 2254 2255 if (pages->caching_params.flags & CACHING_RCD) 2256 bits |= DKCACHE_RCHANGE; 2257 if (pages->caching_params.flags & CACHING_WCE) 2258 bits |= DKCACHE_WCHANGE; 2259 } 2260 2261 *bitsp = bits; 2262 2263 return (0); 2264 } 2265 2266 static int 2267 sd_setcache(struct sd_softc *sd, int bits) 2268 { 2269 struct scsipi_periph *periph = sd->sc_periph; 2270 struct sd_mode_sense_data scsipi_sense; 2271 int error; 2272 uint8_t oflags, byte2 = 0; 2273 int big; 2274 union scsi_disk_pages *pages; 2275 2276 if (periph->periph_version < 2) 2277 return (EOPNOTSUPP); 2278 2279 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2280 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2281 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2282 if (error) 2283 return (error); 2284 2285 if (big) 2286 pages = (void *)(&scsipi_sense.header.big + 1); 2287 else 2288 pages = (void *)(&scsipi_sense.header.small + 1); 2289 2290 oflags = pages->caching_params.flags; 2291 2292 if (bits & DKCACHE_READ) 2293 pages->caching_params.flags &= ~CACHING_RCD; 2294 else 2295 pages->caching_params.flags |= CACHING_RCD; 2296 2297 if (bits & DKCACHE_WRITE) 2298 pages->caching_params.flags |= CACHING_WCE; 2299 else 2300 pages->caching_params.flags &= ~CACHING_WCE; 2301 2302 if (oflags == pages->caching_params.flags) 2303 return (0); 2304 2305 pages->caching_params.pg_code &= PGCODE_MASK; 2306 2307 if (bits & DKCACHE_SAVE) 2308 byte2 |= SMS_SP; 2309 2310 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2311 sizeof(struct scsi_mode_page_header) + 2312 pages->caching_params.pg_length, 0, big)); 2313 } 2314 2315 static void 2316 sd_set_geometry(struct sd_softc *sd) 2317 { 2318 struct disk_geom *dg = &sd->sc_dk.dk_geom; 2319 2320 memset(dg, 0, sizeof(*dg)); 2321 2322 dg->dg_secperunit = sd->params.disksize; 2323 dg->dg_secsize = sd->params.blksize; 2324 dg->dg_nsectors = sd->params.sectors; 2325 dg->dg_ntracks = sd->params.heads; 2326 dg->dg_ncylinders = sd->params.cyls; 2327 2328 disk_set_info(sd->sc_dev, &sd->sc_dk, NULL); 2329 } 2330
Indexes created Tue Sep 23 14:10:03 GMT 2025