sd.c revision 1.303
1 /* $NetBSD: sd.c,v 1.303 2013/09/28 09:01:36 skrll 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 1.303 2013/09/28 09:01:36 skrll 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 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 161 }; 162 163 const struct cdevsw sd_cdevsw = { 164 sdopen, sdclose, sdread, sdwrite, sdioctl, 165 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 166 }; 167 168 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 169 170 static const struct scsipi_periphsw sd_switch = { 171 sd_interpret_sense, /* check our error handler first */ 172 sdstart, /* have a queue, served by this */ 173 NULL, /* have no async handler */ 174 sddone, /* deal with stats at interrupt time */ 175 }; 176 177 struct sd_mode_sense_data { 178 /* 179 * XXX 180 * We are not going to parse this as-is -- it just has to be large 181 * enough. 182 */ 183 union { 184 struct scsi_mode_parameter_header_6 small; 185 struct scsi_mode_parameter_header_10 big; 186 } header; 187 struct scsi_general_block_descriptor blk_desc; 188 union scsi_disk_pages pages; 189 }; 190 191 /* 192 * The routine called by the low level scsi routine when it discovers 193 * A device suitable for this driver 194 */ 195 static int 196 sdmatch(device_t parent, cfdata_t match, 197 void *aux) 198 { 199 struct scsipibus_attach_args *sa = aux; 200 int priority; 201 202 (void)scsipi_inqmatch(&sa->sa_inqbuf, 203 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 204 sizeof(sd_patterns[0]), &priority); 205 206 return (priority); 207 } 208 209 /* 210 * Attach routine common to atapi & scsi. 211 */ 212 static void 213 sdattach(device_t parent, device_t self, void *aux) 214 { 215 struct sd_softc *sd = device_private(self); 216 struct scsipibus_attach_args *sa = aux; 217 struct scsipi_periph *periph = sa->sa_periph; 218 int error, result; 219 struct disk_parms *dp = &sd->params; 220 char pbuf[9]; 221 222 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 223 224 sd->sc_dev = self; 225 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 226 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 227 if (sd->type == T_SIMPLE_DIRECT) 228 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 229 230 if (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph)) == 231 SCSIPI_BUSTYPE_SCSI && periph->periph_version == 0) 232 sd->flags |= SDF_ANCIENT; 233 234 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 235 236 callout_init(&sd->sc_callout, 0); 237 238 /* 239 * Store information needed to contact our base driver 240 */ 241 sd->sc_periph = periph; 242 243 periph->periph_dev = sd->sc_dev; 244 periph->periph_switch = &sd_switch; 245 246 /* 247 * Increase our openings to the maximum-per-periph 248 * supported by the adapter. This will either be 249 * clamped down or grown by the adapter if necessary. 250 */ 251 periph->periph_openings = 252 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 253 periph->periph_flags |= PERIPH_GROW_OPENINGS; 254 255 /* 256 * Initialize and attach the disk structure. 257 */ 258 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 259 disk_attach(&sd->sc_dk); 260 261 /* 262 * Use the subdriver to request information regarding the drive. 263 */ 264 aprint_naive("\n"); 265 aprint_normal("\n"); 266 267 if (periph->periph_quirks & PQUIRK_START) 268 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 269 270 error = scsipi_test_unit_ready(periph, 271 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 272 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 273 274 if (error) 275 result = SDGP_RESULT_OFFLINE; 276 else 277 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 278 aprint_normal_dev(sd->sc_dev, ""); 279 switch (result) { 280 case SDGP_RESULT_OK: 281 format_bytes(pbuf, sizeof(pbuf), 282 (u_int64_t)dp->disksize * dp->blksize); 283 aprint_normal( 284 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 285 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 286 (unsigned long long)dp->disksize); 287 break; 288 289 case SDGP_RESULT_OFFLINE: 290 aprint_normal("drive offline"); 291 break; 292 293 case SDGP_RESULT_UNFORMATTED: 294 aprint_normal("unformatted media"); 295 break; 296 297 #ifdef DIAGNOSTIC 298 default: 299 panic("sdattach: unknown result from get_parms"); 300 break; 301 #endif 302 } 303 aprint_normal("\n"); 304 305 /* 306 * Establish a shutdown hook so that we can ensure that 307 * our data has actually made it onto the platter at 308 * shutdown time. Note that this relies on the fact 309 * that the shutdown hooks at the "leaves" of the device tree 310 * are run, first (thus guaranteeing that our hook runs before 311 * our ancestors'). 312 */ 313 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 314 aprint_error_dev(self, "couldn't establish power handler\n"); 315 316 /* 317 * attach the device into the random source list 318 */ 319 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 320 RND_TYPE_DISK, 0); 321 322 /* Discover wedges on this disk. */ 323 dkwedge_discover(&sd->sc_dk); 324 325 /* 326 * Disk insertion and removal times can be a useful source 327 * of entropy, though the estimator should never _count_ 328 * these bits, on insertion, because the deltas to the 329 * nonexistent) previous event should never allow it. 330 */ 331 rnd_add_uint32(&sd->rnd_source, 0); 332 } 333 334 static int 335 sddetach(device_t self, int flags) 336 { 337 struct sd_softc *sd = device_private(self); 338 int s, bmaj, cmaj, i, mn, rc; 339 340 rnd_add_uint32(&sd->rnd_source, 0); 341 342 if ((rc = disk_begindetach(&sd->sc_dk, sdlastclose, self, flags)) != 0) 343 return rc; 344 345 /* locate the major number */ 346 bmaj = bdevsw_lookup_major(&sd_bdevsw); 347 cmaj = cdevsw_lookup_major(&sd_cdevsw); 348 349 /* Nuke the vnodes for any open instances */ 350 for (i = 0; i < MAXPARTITIONS; i++) { 351 mn = SDMINOR(device_unit(self), i); 352 vdevgone(bmaj, mn, mn, VBLK); 353 vdevgone(cmaj, mn, mn, VCHR); 354 } 355 356 /* kill any pending restart */ 357 callout_stop(&sd->sc_callout); 358 359 /* Delete all of our wedges. */ 360 dkwedge_delall(&sd->sc_dk); 361 362 s = splbio(); 363 364 /* Kill off any queued buffers. */ 365 bufq_drain(sd->buf_queue); 366 367 bufq_free(sd->buf_queue); 368 369 /* Kill off any pending commands. */ 370 scsipi_kill_pending(sd->sc_periph); 371 372 splx(s); 373 374 /* Detach from the disk list. */ 375 disk_detach(&sd->sc_dk); 376 disk_destroy(&sd->sc_dk); 377 378 callout_destroy(&sd->sc_callout); 379 380 pmf_device_deregister(self); 381 382 /* Unhook the entropy source. */ 383 rnd_detach_source(&sd->rnd_source); 384 385 return (0); 386 } 387 388 /* 389 * open the device. Make sure the partition info is a up-to-date as can be. 390 */ 391 static int 392 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 393 { 394 struct sd_softc *sd; 395 struct scsipi_periph *periph; 396 struct scsipi_adapter *adapt; 397 int unit, part; 398 int error; 399 400 unit = SDUNIT(dev); 401 sd = device_lookup_private(&sd_cd, unit); 402 if (sd == NULL) 403 return (ENXIO); 404 405 if (!device_is_active(sd->sc_dev)) 406 return (ENODEV); 407 408 part = SDPART(dev); 409 410 mutex_enter(&sd->sc_dk.dk_openlock); 411 412 /* 413 * If there are wedges, and this is not RAW_PART, then we 414 * need to fail. 415 */ 416 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 417 error = EBUSY; 418 goto bad1; 419 } 420 421 periph = sd->sc_periph; 422 adapt = periph->periph_channel->chan_adapter; 423 424 SC_DEBUG(periph, SCSIPI_DB1, 425 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, 426 sd_cd.cd_ndevs, part)); 427 428 /* 429 * If this is the first open of this device, add a reference 430 * to the adapter. 431 */ 432 if (sd->sc_dk.dk_openmask == 0 && 433 (error = scsipi_adapter_addref(adapt)) != 0) 434 goto bad1; 435 436 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 437 /* 438 * If any partition is open, but the disk has been invalidated, 439 * disallow further opens of non-raw partition 440 */ 441 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 442 (part != RAW_PART || fmt != S_IFCHR)) { 443 error = EIO; 444 goto bad2; 445 } 446 } else { 447 int silent; 448 449 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 450 silent = XS_CTL_SILENT; 451 else 452 silent = 0; 453 454 /* Check that it is still responding and ok. */ 455 error = scsipi_test_unit_ready(periph, 456 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 457 silent); 458 459 /* 460 * Start the pack spinning if necessary. Always allow the 461 * raw parition to be opened, for raw IOCTLs. Data transfers 462 * will check for SDEV_MEDIA_LOADED. 463 */ 464 if (error == EIO) { 465 int error2; 466 467 error2 = scsipi_start(periph, SSS_START, silent); 468 switch (error2) { 469 case 0: 470 error = 0; 471 break; 472 case EIO: 473 case EINVAL: 474 break; 475 default: 476 error = error2; 477 break; 478 } 479 } 480 if (error) { 481 if (silent && (flag & FSILENT) == 0) 482 goto out; 483 goto bad2; 484 } 485 486 periph->periph_flags |= PERIPH_OPEN; 487 488 if (periph->periph_flags & PERIPH_REMOVABLE) { 489 /* Lock the pack in. */ 490 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 491 XS_CTL_IGNORE_ILLEGAL_REQUEST | 492 XS_CTL_IGNORE_MEDIA_CHANGE | 493 XS_CTL_SILENT); 494 if (error) 495 goto bad3; 496 } 497 498 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 499 int param_error; 500 periph->periph_flags |= PERIPH_MEDIA_LOADED; 501 502 /* 503 * Load the physical device parameters. 504 * 505 * Note that if media is present but unformatted, 506 * we allow the open (so that it can be formatted!). 507 * The drive should refuse real I/O, if the media is 508 * unformatted. 509 */ 510 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 511 == SDGP_RESULT_OFFLINE) { 512 error = ENXIO; 513 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 514 goto bad3; 515 } 516 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 517 518 /* Load the partition info if not already loaded. */ 519 if (param_error == 0) { 520 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 521 error = EIO; 522 goto bad3; 523 } 524 SC_DEBUG(periph, SCSIPI_DB3, 525 ("Disklabel loaded ")); 526 } 527 } 528 } 529 530 /* Check that the partition exists. */ 531 if (part != RAW_PART && 532 (part >= sd->sc_dk.dk_label->d_npartitions || 533 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 534 error = ENXIO; 535 goto bad3; 536 } 537 538 out: /* Insure only one open at a time. */ 539 switch (fmt) { 540 case S_IFCHR: 541 sd->sc_dk.dk_copenmask |= (1 << part); 542 break; 543 case S_IFBLK: 544 sd->sc_dk.dk_bopenmask |= (1 << part); 545 break; 546 } 547 sd->sc_dk.dk_openmask = 548 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 549 550 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 551 mutex_exit(&sd->sc_dk.dk_openlock); 552 return (0); 553 554 bad3: 555 if (sd->sc_dk.dk_openmask == 0) { 556 if (periph->periph_flags & PERIPH_REMOVABLE) 557 scsipi_prevent(periph, SPAMR_ALLOW, 558 XS_CTL_IGNORE_ILLEGAL_REQUEST | 559 XS_CTL_IGNORE_MEDIA_CHANGE | 560 XS_CTL_SILENT); 561 periph->periph_flags &= ~PERIPH_OPEN; 562 } 563 564 bad2: 565 if (sd->sc_dk.dk_openmask == 0) 566 scsipi_adapter_delref(adapt); 567 568 bad1: 569 mutex_exit(&sd->sc_dk.dk_openlock); 570 return (error); 571 } 572 573 /* 574 * Caller must hold sd->sc_dk.dk_openlock. 575 */ 576 static int 577 sdlastclose(device_t self) 578 { 579 struct sd_softc *sd = device_private(self); 580 struct scsipi_periph *periph = sd->sc_periph; 581 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 582 583 /* 584 * If the disk cache needs flushing, and the disk supports 585 * it, do it now. 586 */ 587 if ((sd->flags & SDF_DIRTY) != 0) { 588 if (sd_flush(sd, 0)) { 589 aprint_error_dev(sd->sc_dev, 590 "cache synchronization failed\n"); 591 sd->flags &= ~SDF_FLUSHING; 592 } else 593 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 594 } 595 596 scsipi_wait_drain(periph); 597 598 if (periph->periph_flags & PERIPH_REMOVABLE) 599 scsipi_prevent(periph, SPAMR_ALLOW, 600 XS_CTL_IGNORE_ILLEGAL_REQUEST | 601 XS_CTL_IGNORE_NOT_READY | 602 XS_CTL_SILENT); 603 periph->periph_flags &= ~PERIPH_OPEN; 604 605 scsipi_wait_drain(periph); 606 607 scsipi_adapter_delref(adapt); 608 609 return 0; 610 } 611 612 /* 613 * close the device.. only called if we are the LAST occurence of an open 614 * device. Convenient now but usually a pain. 615 */ 616 static int 617 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 618 { 619 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 620 int part = SDPART(dev); 621 622 mutex_enter(&sd->sc_dk.dk_openlock); 623 switch (fmt) { 624 case S_IFCHR: 625 sd->sc_dk.dk_copenmask &= ~(1 << part); 626 break; 627 case S_IFBLK: 628 sd->sc_dk.dk_bopenmask &= ~(1 << part); 629 break; 630 } 631 sd->sc_dk.dk_openmask = 632 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 633 634 if (sd->sc_dk.dk_openmask == 0) 635 sdlastclose(sd->sc_dev); 636 637 mutex_exit(&sd->sc_dk.dk_openlock); 638 return (0); 639 } 640 641 /* 642 * Actually translate the requested transfer into one the physical driver 643 * can understand. The transfer is described by a buf and will include 644 * only one physical transfer. 645 */ 646 static void 647 sdstrategy(struct buf *bp) 648 { 649 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 650 struct scsipi_periph *periph = sd->sc_periph; 651 struct disklabel *lp; 652 daddr_t blkno; 653 int s; 654 bool sector_aligned; 655 656 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 657 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 658 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 659 /* 660 * If the device has been made invalid, error out 661 */ 662 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 663 !device_is_active(sd->sc_dev)) { 664 if (periph->periph_flags & PERIPH_OPEN) 665 bp->b_error = EIO; 666 else 667 bp->b_error = ENODEV; 668 goto done; 669 } 670 671 lp = sd->sc_dk.dk_label; 672 673 /* 674 * The transfer must be a whole number of blocks, offset must not be 675 * negative. 676 */ 677 if (lp->d_secsize == DEV_BSIZE) { 678 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 679 } else { 680 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 681 } 682 if (!sector_aligned || bp->b_blkno < 0) { 683 bp->b_error = EINVAL; 684 goto done; 685 } 686 /* 687 * If it's a null transfer, return immediatly 688 */ 689 if (bp->b_bcount == 0) 690 goto done; 691 692 /* 693 * Do bounds checking, adjust transfer. if error, process. 694 * If end of partition, just return. 695 */ 696 if (SDPART(bp->b_dev) == RAW_PART) { 697 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 698 sd->params.disksize512) <= 0) 699 goto done; 700 } else { 701 if (bounds_check_with_label(&sd->sc_dk, bp, 702 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 703 goto done; 704 } 705 706 /* 707 * Now convert the block number to absolute and put it in 708 * terms of the device's logical block size. 709 */ 710 if (lp->d_secsize == DEV_BSIZE) 711 blkno = bp->b_blkno; 712 else if (lp->d_secsize > DEV_BSIZE) 713 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 714 else 715 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 716 717 if (SDPART(bp->b_dev) != RAW_PART) 718 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 719 720 bp->b_rawblkno = blkno; 721 722 s = splbio(); 723 724 /* 725 * Place it in the queue of disk activities for this disk. 726 * 727 * XXX Only do disksort() if the current operating mode does not 728 * XXX include tagged queueing. 729 */ 730 bufq_put(sd->buf_queue, bp); 731 732 /* 733 * Tell the device to get going on the transfer if it's 734 * not doing anything, otherwise just wait for completion 735 */ 736 sdstart(sd->sc_periph); 737 738 splx(s); 739 return; 740 741 done: 742 /* 743 * Correctly set the buf to indicate a completed xfer 744 */ 745 bp->b_resid = bp->b_bcount; 746 biodone(bp); 747 } 748 749 /* 750 * sdstart looks to see if there is a buf waiting for the device 751 * and that the device is not already busy. If both are true, 752 * It dequeues the buf and creates a scsi command to perform the 753 * transfer in the buf. The transfer request will call scsipi_done 754 * on completion, which will in turn call this routine again 755 * so that the next queued transfer is performed. 756 * The bufs are queued by the strategy routine (sdstrategy) 757 * 758 * This routine is also called after other non-queued requests 759 * have been made of the scsi driver, to ensure that the queue 760 * continues to be drained. 761 * 762 * must be called at the correct (highish) spl level 763 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 764 */ 765 static void 766 sdstart(struct scsipi_periph *periph) 767 { 768 struct sd_softc *sd = device_private(periph->periph_dev); 769 struct disklabel *lp = sd->sc_dk.dk_label; 770 struct buf *bp = 0; 771 struct scsipi_rw_16 cmd16; 772 struct scsipi_rw_10 cmd_big; 773 struct scsi_rw_6 cmd_small; 774 struct scsipi_generic *cmdp; 775 struct scsipi_xfer *xs; 776 int nblks, cmdlen, error, flags; 777 778 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 779 /* 780 * Check if the device has room for another command 781 */ 782 while (periph->periph_active < periph->periph_openings) { 783 /* 784 * there is excess capacity, but a special waits 785 * It'll need the adapter as soon as we clear out of the 786 * way and let it run (user level wait). 787 */ 788 if (periph->periph_flags & PERIPH_WAITING) { 789 periph->periph_flags &= ~PERIPH_WAITING; 790 wakeup((void *)periph); 791 return; 792 } 793 794 /* 795 * If the device has become invalid, abort all the 796 * reads and writes until all files have been closed and 797 * re-opened 798 */ 799 if (__predict_false( 800 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 801 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 802 bp->b_error = EIO; 803 bp->b_resid = bp->b_bcount; 804 biodone(bp); 805 continue; 806 } else { 807 return; 808 } 809 } 810 811 /* 812 * See if there is a buf with work for us to do.. 813 */ 814 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 815 return; 816 817 /* 818 * We have a buf, now we should make a command. 819 */ 820 821 if (lp->d_secsize == DEV_BSIZE) 822 nblks = bp->b_bcount >> DEV_BSHIFT; 823 else 824 nblks = howmany(bp->b_bcount, lp->d_secsize); 825 826 /* 827 * Fill out the scsi command. Use the smallest CDB possible 828 * (6-byte, 10-byte, or 16-byte). 829 */ 830 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 831 ((nblks & 0xff) == nblks) && 832 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 833 /* 6-byte CDB */ 834 memset(&cmd_small, 0, sizeof(cmd_small)); 835 cmd_small.opcode = (bp->b_flags & B_READ) ? 836 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 837 _lto3b(bp->b_rawblkno, cmd_small.addr); 838 cmd_small.length = nblks & 0xff; 839 cmdlen = sizeof(cmd_small); 840 cmdp = (struct scsipi_generic *)&cmd_small; 841 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 842 /* 10-byte CDB */ 843 memset(&cmd_big, 0, sizeof(cmd_big)); 844 cmd_big.opcode = (bp->b_flags & B_READ) ? 845 READ_10 : WRITE_10; 846 _lto4b(bp->b_rawblkno, cmd_big.addr); 847 _lto2b(nblks, cmd_big.length); 848 cmdlen = sizeof(cmd_big); 849 cmdp = (struct scsipi_generic *)&cmd_big; 850 } else { 851 /* 16-byte CDB */ 852 memset(&cmd16, 0, sizeof(cmd16)); 853 cmd16.opcode = (bp->b_flags & B_READ) ? 854 READ_16 : WRITE_16; 855 _lto8b(bp->b_rawblkno, cmd16.addr); 856 _lto4b(nblks, cmd16.length); 857 cmdlen = sizeof(cmd16); 858 cmdp = (struct scsipi_generic *)&cmd16; 859 } 860 861 /* Instrumentation. */ 862 disk_busy(&sd->sc_dk); 863 864 /* 865 * Mark the disk dirty so that the cache will be 866 * flushed on close. 867 */ 868 if ((bp->b_flags & B_READ) == 0) 869 sd->flags |= SDF_DIRTY; 870 871 /* 872 * Figure out what flags to use. 873 */ 874 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 875 if (bp->b_flags & B_READ) 876 flags |= XS_CTL_DATA_IN; 877 else 878 flags |= XS_CTL_DATA_OUT; 879 880 /* 881 * Call the routine that chats with the adapter. 882 * Note: we cannot sleep as we may be an interrupt 883 */ 884 xs = scsipi_make_xs(periph, cmdp, cmdlen, 885 (u_char *)bp->b_data, bp->b_bcount, 886 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 887 if (__predict_false(xs == NULL)) { 888 /* 889 * out of memory. Keep this buffer in the queue, and 890 * retry later. 891 */ 892 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 893 periph); 894 return; 895 } 896 /* 897 * need to dequeue the buffer before queuing the command, 898 * because cdstart may be called recursively from the 899 * HBA driver 900 */ 901 #ifdef DIAGNOSTIC 902 if (bufq_get(sd->buf_queue) != bp) 903 panic("sdstart(): dequeued wrong buf"); 904 #else 905 bufq_get(sd->buf_queue); 906 #endif 907 error = scsipi_execute_xs(xs); 908 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 909 KASSERT(error == 0); 910 } 911 } 912 913 static void 914 sdrestart(void *v) 915 { 916 int s = splbio(); 917 sdstart((struct scsipi_periph *)v); 918 splx(s); 919 } 920 921 static void 922 sddone(struct scsipi_xfer *xs, int error) 923 { 924 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 925 struct buf *bp = xs->bp; 926 927 if (sd->flags & SDF_FLUSHING) { 928 /* Flush completed, no longer dirty. */ 929 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 930 } 931 932 if (bp) { 933 bp->b_error = error; 934 bp->b_resid = xs->resid; 935 if (error) { 936 /* on a read/write error bp->b_resid is zero, so fix */ 937 bp->b_resid = bp->b_bcount; 938 } 939 940 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 941 (bp->b_flags & B_READ)); 942 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 943 944 biodone(bp); 945 } 946 } 947 948 static void 949 sdminphys(struct buf *bp) 950 { 951 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 952 long xmax; 953 954 /* 955 * If the device is ancient, we want to make sure that 956 * the transfer fits into a 6-byte cdb. 957 * 958 * XXX Note that the SCSI-I spec says that 256-block transfers 959 * are allowed in a 6-byte read/write, and are specified 960 * by settng the "length" to 0. However, we're conservative 961 * here, allowing only 255-block transfers in case an 962 * ancient device gets confused by length == 0. A length of 0 963 * in a 10-byte read/write actually means 0 blocks. 964 */ 965 if ((sd->flags & SDF_ANCIENT) && 966 ((sd->sc_periph->periph_flags & 967 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 968 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 969 970 if (bp->b_bcount > xmax) 971 bp->b_bcount = xmax; 972 } 973 974 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 975 } 976 977 static int 978 sdread(dev_t dev, struct uio *uio, int ioflag) 979 { 980 981 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 982 } 983 984 static int 985 sdwrite(dev_t dev, struct uio *uio, int ioflag) 986 { 987 988 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 989 } 990 991 /* 992 * Perform special action on behalf of the user 993 * Knows about the internals of this device 994 */ 995 static int 996 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 997 { 998 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 999 struct scsipi_periph *periph = sd->sc_periph; 1000 int part = SDPART(dev); 1001 int error; 1002 int s; 1003 #ifdef __HAVE_OLD_DISKLABEL 1004 struct disklabel *newlabel = NULL; 1005 #endif 1006 1007 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1008 1009 /* 1010 * If the device is not valid, some IOCTLs can still be 1011 * handled on the raw partition. Check this here. 1012 */ 1013 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1014 switch (cmd) { 1015 case DIOCKLABEL: 1016 case DIOCWLABEL: 1017 case DIOCLOCK: 1018 case DIOCEJECT: 1019 case ODIOCEJECT: 1020 case DIOCGCACHE: 1021 case DIOCSCACHE: 1022 case DIOCGSTRATEGY: 1023 case DIOCSSTRATEGY: 1024 case SCIOCIDENTIFY: 1025 case OSCIOCIDENTIFY: 1026 case SCIOCCOMMAND: 1027 case SCIOCDEBUG: 1028 if (part == RAW_PART) 1029 break; 1030 /* FALLTHROUGH */ 1031 default: 1032 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1033 return (ENODEV); 1034 else 1035 return (EIO); 1036 } 1037 } 1038 1039 error = disk_ioctl(&sd->sc_dk, cmd, addr, flag, l); 1040 if (error != EPASSTHROUGH) 1041 return (error); 1042 1043 error = 0; 1044 switch (cmd) { 1045 case DIOCGDINFO: 1046 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1047 return (0); 1048 1049 #ifdef __HAVE_OLD_DISKLABEL 1050 case ODIOCGDINFO: 1051 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1052 if (newlabel == NULL) 1053 return EIO; 1054 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1055 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1056 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1057 else 1058 error = ENOTTY; 1059 free(newlabel, M_TEMP); 1060 return error; 1061 #endif 1062 1063 case DIOCGPART: 1064 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1065 ((struct partinfo *)addr)->part = 1066 &sd->sc_dk.dk_label->d_partitions[part]; 1067 return (0); 1068 1069 case DIOCWDINFO: 1070 case DIOCSDINFO: 1071 #ifdef __HAVE_OLD_DISKLABEL 1072 case ODIOCWDINFO: 1073 case ODIOCSDINFO: 1074 #endif 1075 { 1076 struct disklabel *lp; 1077 1078 if ((flag & FWRITE) == 0) 1079 return (EBADF); 1080 1081 #ifdef __HAVE_OLD_DISKLABEL 1082 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1083 newlabel = malloc(sizeof *newlabel, M_TEMP, 1084 M_WAITOK | M_ZERO); 1085 if (newlabel == NULL) 1086 return EIO; 1087 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1088 lp = newlabel; 1089 } else 1090 #endif 1091 lp = (struct disklabel *)addr; 1092 1093 mutex_enter(&sd->sc_dk.dk_openlock); 1094 sd->flags |= SDF_LABELLING; 1095 1096 error = setdisklabel(sd->sc_dk.dk_label, 1097 lp, /*sd->sc_dk.dk_openmask : */0, 1098 sd->sc_dk.dk_cpulabel); 1099 if (error == 0) { 1100 if (cmd == DIOCWDINFO 1101 #ifdef __HAVE_OLD_DISKLABEL 1102 || cmd == ODIOCWDINFO 1103 #endif 1104 ) 1105 error = writedisklabel(SDLABELDEV(dev), 1106 sdstrategy, sd->sc_dk.dk_label, 1107 sd->sc_dk.dk_cpulabel); 1108 } 1109 1110 sd->flags &= ~SDF_LABELLING; 1111 mutex_exit(&sd->sc_dk.dk_openlock); 1112 #ifdef __HAVE_OLD_DISKLABEL 1113 if (newlabel != NULL) 1114 free(newlabel, M_TEMP); 1115 #endif 1116 return (error); 1117 } 1118 1119 case DIOCKLABEL: 1120 if (*(int *)addr) 1121 periph->periph_flags |= PERIPH_KEEP_LABEL; 1122 else 1123 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1124 return (0); 1125 1126 case DIOCWLABEL: 1127 if ((flag & FWRITE) == 0) 1128 return (EBADF); 1129 if (*(int *)addr) 1130 sd->flags |= SDF_WLABEL; 1131 else 1132 sd->flags &= ~SDF_WLABEL; 1133 return (0); 1134 1135 case DIOCLOCK: 1136 if (periph->periph_flags & PERIPH_REMOVABLE) 1137 return (scsipi_prevent(periph, 1138 (*(int *)addr) ? 1139 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1140 else 1141 return (ENOTTY); 1142 1143 case DIOCEJECT: 1144 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1145 return (ENOTTY); 1146 if (*(int *)addr == 0) { 1147 /* 1148 * Don't force eject: check that we are the only 1149 * partition open. If so, unlock it. 1150 */ 1151 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1152 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1153 sd->sc_dk.dk_openmask) { 1154 error = scsipi_prevent(periph, SPAMR_ALLOW, 1155 XS_CTL_IGNORE_NOT_READY); 1156 if (error) 1157 return (error); 1158 } else { 1159 return (EBUSY); 1160 } 1161 } 1162 /* FALLTHROUGH */ 1163 case ODIOCEJECT: 1164 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1165 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1166 1167 case DIOCGDEFLABEL: 1168 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1169 return (0); 1170 1171 #ifdef __HAVE_OLD_DISKLABEL 1172 case ODIOCGDEFLABEL: 1173 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1174 if (newlabel == NULL) 1175 return EIO; 1176 sdgetdefaultlabel(sd, newlabel); 1177 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1178 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1179 else 1180 error = ENOTTY; 1181 free(newlabel, M_TEMP); 1182 return error; 1183 #endif 1184 1185 case DIOCGCACHE: 1186 return (sd_getcache(sd, (int *) addr)); 1187 1188 case DIOCSCACHE: 1189 if ((flag & FWRITE) == 0) 1190 return (EBADF); 1191 return (sd_setcache(sd, *(int *) addr)); 1192 1193 case DIOCCACHESYNC: 1194 /* 1195 * XXX Do we really need to care about having a writable 1196 * file descriptor here? 1197 */ 1198 if ((flag & FWRITE) == 0) 1199 return (EBADF); 1200 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1201 error = sd_flush(sd, 0); 1202 if (error) 1203 sd->flags &= ~SDF_FLUSHING; 1204 else 1205 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1206 } 1207 return (error); 1208 1209 case DIOCAWEDGE: 1210 { 1211 struct dkwedge_info *dkw = (void *) addr; 1212 1213 if ((flag & FWRITE) == 0) 1214 return (EBADF); 1215 1216 /* If the ioctl happens here, the parent is us. */ 1217 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1218 sizeof(dkw->dkw_parent)); 1219 return (dkwedge_add(dkw)); 1220 } 1221 1222 case DIOCDWEDGE: 1223 { 1224 struct dkwedge_info *dkw = (void *) addr; 1225 1226 if ((flag & FWRITE) == 0) 1227 return (EBADF); 1228 1229 /* If the ioctl happens here, the parent is us. */ 1230 strlcpy(dkw->dkw_parent, device_xname(sd->sc_dev), 1231 sizeof(dkw->dkw_parent)); 1232 return (dkwedge_del(dkw)); 1233 } 1234 1235 case DIOCLWEDGES: 1236 { 1237 struct dkwedge_list *dkwl = (void *) addr; 1238 1239 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1240 } 1241 1242 case DIOCGSTRATEGY: 1243 { 1244 struct disk_strategy *dks = addr; 1245 1246 s = splbio(); 1247 strlcpy(dks->dks_name, bufq_getstrategyname(sd->buf_queue), 1248 sizeof(dks->dks_name)); 1249 splx(s); 1250 dks->dks_paramlen = 0; 1251 1252 return 0; 1253 } 1254 1255 case DIOCSSTRATEGY: 1256 { 1257 struct disk_strategy *dks = addr; 1258 struct bufq_state *new; 1259 struct bufq_state *old; 1260 1261 if ((flag & FWRITE) == 0) { 1262 return EBADF; 1263 } 1264 1265 if (dks->dks_param != NULL) { 1266 return EINVAL; 1267 } 1268 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1269 error = bufq_alloc(&new, dks->dks_name, 1270 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1271 if (error) { 1272 return error; 1273 } 1274 s = splbio(); 1275 old = sd->buf_queue; 1276 bufq_move(new, old); 1277 sd->buf_queue = new; 1278 splx(s); 1279 bufq_free(old); 1280 1281 return 0; 1282 } 1283 1284 default: 1285 if (part != RAW_PART) 1286 return (ENOTTY); 1287 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1288 } 1289 1290 #ifdef DIAGNOSTIC 1291 panic("sdioctl: impossible"); 1292 #endif 1293 } 1294 1295 static void 1296 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1297 { 1298 1299 memset(lp, 0, sizeof(struct disklabel)); 1300 1301 lp->d_secsize = sd->params.blksize; 1302 lp->d_ntracks = sd->params.heads; 1303 lp->d_nsectors = sd->params.sectors; 1304 lp->d_ncylinders = sd->params.cyls; 1305 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1306 1307 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sd->sc_periph))) { 1308 case SCSIPI_BUSTYPE_SCSI: 1309 lp->d_type = DTYPE_SCSI; 1310 break; 1311 case SCSIPI_BUSTYPE_ATAPI: 1312 lp->d_type = DTYPE_ATAPI; 1313 break; 1314 } 1315 /* 1316 * XXX 1317 * We could probe the mode pages to figure out what kind of disc it is. 1318 * Is this worthwhile? 1319 */ 1320 strncpy(lp->d_typename, sd->name, 16); 1321 strncpy(lp->d_packname, "fictitious", 16); 1322 if (sd->params.disksize > UINT32_MAX) 1323 lp->d_secperunit = UINT32_MAX; 1324 else 1325 lp->d_secperunit = sd->params.disksize; 1326 lp->d_rpm = sd->params.rot_rate; 1327 lp->d_interleave = 1; 1328 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1329 D_REMOVABLE : 0; 1330 1331 lp->d_partitions[RAW_PART].p_offset = 0; 1332 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1333 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1334 lp->d_npartitions = RAW_PART + 1; 1335 1336 lp->d_magic = DISKMAGIC; 1337 lp->d_magic2 = DISKMAGIC; 1338 lp->d_checksum = dkcksum(lp); 1339 } 1340 1341 1342 /* 1343 * Load the label information on the named device 1344 */ 1345 static int 1346 sdgetdisklabel(struct sd_softc *sd) 1347 { 1348 struct disklabel *lp = sd->sc_dk.dk_label; 1349 const char *errstring; 1350 1351 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1352 1353 sdgetdefaultlabel(sd, lp); 1354 1355 if (lp->d_secpercyl == 0) { 1356 lp->d_secpercyl = 100; 1357 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1358 } 1359 1360 /* 1361 * Call the generic disklabel extraction routine 1362 */ 1363 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1364 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1365 if (errstring) { 1366 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1367 return EIO; 1368 } 1369 return 0; 1370 } 1371 1372 static bool 1373 sd_shutdown(device_t self, int how) 1374 { 1375 struct sd_softc *sd = device_private(self); 1376 1377 /* 1378 * If the disk cache needs to be flushed, and the disk supports 1379 * it, flush it. We're cold at this point, so we poll for 1380 * completion. 1381 */ 1382 if ((sd->flags & SDF_DIRTY) != 0) { 1383 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1384 aprint_error_dev(sd->sc_dev, 1385 "cache synchronization failed\n"); 1386 sd->flags &= ~SDF_FLUSHING; 1387 } else 1388 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1389 } 1390 return true; 1391 } 1392 1393 static bool 1394 sd_suspend(device_t dv, const pmf_qual_t *qual) 1395 { 1396 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1397 } 1398 1399 /* 1400 * Check Errors 1401 */ 1402 static int 1403 sd_interpret_sense(struct scsipi_xfer *xs) 1404 { 1405 struct scsipi_periph *periph = xs->xs_periph; 1406 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1407 struct sd_softc *sd = device_private(periph->periph_dev); 1408 int s, error, retval = EJUSTRETURN; 1409 1410 /* 1411 * If the periph is already recovering, just do the normal 1412 * error processing. 1413 */ 1414 if (periph->periph_flags & PERIPH_RECOVERING) 1415 return (retval); 1416 1417 /* 1418 * Ignore errors from accessing illegal fields (e.g. trying to 1419 * lock the door of a digicam, which doesn't have a door that 1420 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1421 */ 1422 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1423 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1424 sense->asc == 0x24 && 1425 sense->ascq == 0x00) { /* Illegal field in CDB */ 1426 if (!(xs->xs_control & XS_CTL_SILENT)) { 1427 scsipi_printaddr(periph); 1428 printf("no door lock\n"); 1429 } 1430 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1431 return (retval); 1432 } 1433 1434 1435 1436 /* 1437 * If the device is not open yet, let the generic code handle it. 1438 */ 1439 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1440 return (retval); 1441 1442 /* 1443 * If it isn't a extended or extended/deferred error, let 1444 * the generic code handle it. 1445 */ 1446 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1447 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1448 return (retval); 1449 1450 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1451 sense->asc == 0x4) { 1452 if (sense->ascq == 0x01) { 1453 /* 1454 * Unit In The Process Of Becoming Ready. 1455 */ 1456 printf("%s: waiting for pack to spin up...\n", 1457 device_xname(sd->sc_dev)); 1458 if (!callout_pending(&periph->periph_callout)) 1459 scsipi_periph_freeze(periph, 1); 1460 callout_reset(&periph->periph_callout, 1461 5 * hz, scsipi_periph_timed_thaw, periph); 1462 retval = ERESTART; 1463 } else if (sense->ascq == 0x02) { 1464 printf("%s: pack is stopped, restarting...\n", 1465 device_xname(sd->sc_dev)); 1466 s = splbio(); 1467 periph->periph_flags |= PERIPH_RECOVERING; 1468 splx(s); 1469 error = scsipi_start(periph, SSS_START, 1470 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1471 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1472 if (error) { 1473 aprint_error_dev(sd->sc_dev, 1474 "unable to restart pack\n"); 1475 retval = error; 1476 } else 1477 retval = ERESTART; 1478 s = splbio(); 1479 periph->periph_flags &= ~PERIPH_RECOVERING; 1480 splx(s); 1481 } 1482 } 1483 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1484 sense->asc == 0x31 && 1485 sense->ascq == 0x00) { /* maybe for any asq ? */ 1486 /* Medium Format Corrupted */ 1487 retval = EFTYPE; 1488 } 1489 return (retval); 1490 } 1491 1492 1493 static int 1494 sdsize(dev_t dev) 1495 { 1496 struct sd_softc *sd; 1497 int part, unit, omask; 1498 int size; 1499 1500 unit = SDUNIT(dev); 1501 sd = device_lookup_private(&sd_cd, unit); 1502 if (sd == NULL) 1503 return (-1); 1504 1505 if (!device_is_active(sd->sc_dev)) 1506 return (-1); 1507 1508 part = SDPART(dev); 1509 omask = sd->sc_dk.dk_openmask & (1 << part); 1510 1511 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1512 return (-1); 1513 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1514 size = -1; 1515 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1516 size = -1; 1517 else 1518 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1519 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1520 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1521 return (-1); 1522 return (size); 1523 } 1524 1525 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1526 static struct scsipi_xfer sx; 1527 static int sddoingadump; 1528 1529 /* 1530 * dump all of physical memory into the partition specified, starting 1531 * at offset 'dumplo' into the partition. 1532 */ 1533 static int 1534 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1535 { 1536 struct sd_softc *sd; /* disk unit to do the I/O */ 1537 struct disklabel *lp; /* disk's disklabel */ 1538 int unit, part; 1539 int sectorsize; /* size of a disk sector */ 1540 int nsects; /* number of sectors in partition */ 1541 int sectoff; /* sector offset of partition */ 1542 int totwrt; /* total number of sectors left to write */ 1543 int nwrt; /* current number of sectors to write */ 1544 struct scsipi_rw_10 cmd; /* write command */ 1545 struct scsipi_xfer *xs; /* ... convenience */ 1546 struct scsipi_periph *periph; 1547 struct scsipi_channel *chan; 1548 1549 /* Check if recursive dump; if so, punt. */ 1550 if (sddoingadump) 1551 return (EFAULT); 1552 1553 /* Mark as active early. */ 1554 sddoingadump = 1; 1555 1556 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1557 part = SDPART(dev); 1558 1559 /* Check for acceptable drive number. */ 1560 sd = device_lookup_private(&sd_cd, unit); 1561 if (sd == NULL) 1562 return (ENXIO); 1563 1564 if (!device_is_active(sd->sc_dev)) 1565 return (ENODEV); 1566 1567 periph = sd->sc_periph; 1568 chan = periph->periph_channel; 1569 1570 /* Make sure it was initialized. */ 1571 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1572 return (ENXIO); 1573 1574 /* Convert to disk sectors. Request must be a multiple of size. */ 1575 lp = sd->sc_dk.dk_label; 1576 sectorsize = lp->d_secsize; 1577 if ((size % sectorsize) != 0) 1578 return (EFAULT); 1579 totwrt = size / sectorsize; 1580 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1581 1582 nsects = lp->d_partitions[part].p_size; 1583 sectoff = lp->d_partitions[part].p_offset; 1584 1585 /* Check transfer bounds against partition size. */ 1586 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1587 return (EINVAL); 1588 1589 /* Offset block number to start of partition. */ 1590 blkno += sectoff; 1591 1592 xs = &sx; 1593 1594 while (totwrt > 0) { 1595 nwrt = totwrt; /* XXX */ 1596 #ifndef SD_DUMP_NOT_TRUSTED 1597 /* 1598 * Fill out the scsi command 1599 */ 1600 memset(&cmd, 0, sizeof(cmd)); 1601 cmd.opcode = WRITE_10; 1602 _lto4b(blkno, cmd.addr); 1603 _lto2b(nwrt, cmd.length); 1604 /* 1605 * Fill out the scsipi_xfer structure 1606 * Note: we cannot sleep as we may be an interrupt 1607 * don't use scsipi_command() as it may want to wait 1608 * for an xs. 1609 */ 1610 memset(xs, 0, sizeof(sx)); 1611 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1612 XS_CTL_DATA_OUT; 1613 xs->xs_status = 0; 1614 xs->xs_periph = periph; 1615 xs->xs_retries = SDRETRIES; 1616 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1617 xs->cmd = (struct scsipi_generic *)&cmd; 1618 xs->cmdlen = sizeof(cmd); 1619 xs->resid = nwrt * sectorsize; 1620 xs->error = XS_NOERROR; 1621 xs->bp = 0; 1622 xs->data = va; 1623 xs->datalen = nwrt * sectorsize; 1624 callout_init(&xs->xs_callout, 0); 1625 1626 /* 1627 * Pass all this info to the scsi driver. 1628 */ 1629 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1630 if ((xs->xs_status & XS_STS_DONE) == 0 || 1631 xs->error != XS_NOERROR) 1632 return (EIO); 1633 #else /* SD_DUMP_NOT_TRUSTED */ 1634 /* Let's just talk about this first... */ 1635 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1636 delay(500 * 1000); /* half a second */ 1637 #endif /* SD_DUMP_NOT_TRUSTED */ 1638 1639 /* update block count */ 1640 totwrt -= nwrt; 1641 blkno += nwrt; 1642 va = (char *)va + sectorsize * nwrt; 1643 } 1644 sddoingadump = 0; 1645 return (0); 1646 } 1647 1648 static int 1649 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1650 int page, int flags, int *big) 1651 { 1652 1653 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1654 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1655 *big = 1; 1656 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1657 size + sizeof(struct scsi_mode_parameter_header_10), 1658 flags, SDRETRIES, 6000); 1659 } else { 1660 *big = 0; 1661 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1662 size + sizeof(struct scsi_mode_parameter_header_6), 1663 flags, SDRETRIES, 6000); 1664 } 1665 } 1666 1667 static int 1668 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1669 int flags, int big) 1670 { 1671 1672 if (big) { 1673 struct scsi_mode_parameter_header_10 *header = sense; 1674 1675 _lto2b(0, header->data_length); 1676 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1677 size + sizeof(struct scsi_mode_parameter_header_10), 1678 flags, SDRETRIES, 6000); 1679 } else { 1680 struct scsi_mode_parameter_header_6 *header = sense; 1681 1682 header->data_length = 0; 1683 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1684 size + sizeof(struct scsi_mode_parameter_header_6), 1685 flags, SDRETRIES, 6000); 1686 } 1687 } 1688 1689 /* 1690 * sd_validate_blksize: 1691 * 1692 * Validate the block size. Print error if periph is specified, 1693 */ 1694 static int 1695 sd_validate_blksize(struct scsipi_periph *periph, int len) 1696 { 1697 1698 switch (len) { 1699 case 256: 1700 case 512: 1701 case 1024: 1702 case 2048: 1703 case 4096: 1704 return 1; 1705 } 1706 1707 if (periph) { 1708 scsipi_printaddr(periph); 1709 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1710 (len ^ (1 << (ffs(len) - 1))) ? 1711 "preposterous" : "unsupported", 1712 len, SD_DEFAULT_BLKSIZE); 1713 } 1714 1715 return 0; 1716 } 1717 1718 /* 1719 * sd_read_capacity: 1720 * 1721 * Find out from the device what its capacity is. 1722 */ 1723 static u_int64_t 1724 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1725 { 1726 union { 1727 struct scsipi_read_capacity_10 cmd; 1728 struct scsipi_read_capacity_16 cmd16; 1729 } cmd; 1730 union { 1731 struct scsipi_read_capacity_10_data data; 1732 struct scsipi_read_capacity_16_data data16; 1733 } *datap; 1734 uint64_t rv; 1735 1736 memset(&cmd, 0, sizeof(cmd)); 1737 cmd.cmd.opcode = READ_CAPACITY_10; 1738 1739 /* 1740 * Don't allocate data buffer on stack; 1741 * The lower driver layer might use the same stack and 1742 * if it uses region which is in the same cacheline, 1743 * cache flush ops against the data buffer won't work properly. 1744 */ 1745 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1746 if (datap == NULL) 1747 return 0; 1748 1749 /* 1750 * If the command works, interpret the result as a 4 byte 1751 * number of blocks 1752 */ 1753 rv = 0; 1754 memset(datap, 0, sizeof(datap->data)); 1755 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1756 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1757 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1758 goto out; 1759 1760 if (_4btol(datap->data.addr) != 0xffffffff) { 1761 *blksize = _4btol(datap->data.length); 1762 rv = _4btol(datap->data.addr) + 1; 1763 goto out; 1764 } 1765 1766 /* 1767 * Device is larger than can be reflected by READ CAPACITY (10). 1768 * Try READ CAPACITY (16). 1769 */ 1770 1771 memset(&cmd, 0, sizeof(cmd)); 1772 cmd.cmd16.opcode = READ_CAPACITY_16; 1773 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1774 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1775 1776 memset(datap, 0, sizeof(datap->data16)); 1777 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1778 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1779 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1780 goto out; 1781 1782 *blksize = _4btol(datap->data16.length); 1783 rv = _8btol(datap->data16.addr) + 1; 1784 1785 out: 1786 free(datap, M_TEMP); 1787 return rv; 1788 } 1789 1790 static int 1791 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1792 { 1793 struct { 1794 struct scsi_mode_parameter_header_6 header; 1795 /* no block descriptor */ 1796 u_int8_t pg_code; /* page code (should be 6) */ 1797 u_int8_t pg_length; /* page length (should be 11) */ 1798 u_int8_t wcd; /* bit0: cache disable */ 1799 u_int8_t lbs[2]; /* logical block size */ 1800 u_int8_t size[5]; /* number of log. blocks */ 1801 u_int8_t pp; /* power/performance */ 1802 u_int8_t flags; 1803 u_int8_t resvd; 1804 } scsipi_sense; 1805 u_int64_t blocks; 1806 int error, blksize; 1807 1808 /* 1809 * sd_read_capacity (ie "read capacity") and mode sense page 6 1810 * give the same information. Do both for now, and check 1811 * for consistency. 1812 * XXX probably differs for removable media 1813 */ 1814 dp->blksize = SD_DEFAULT_BLKSIZE; 1815 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1816 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1817 1818 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1819 &scsipi_sense.header, sizeof(scsipi_sense), 1820 flags, SDRETRIES, 6000); 1821 1822 if (error != 0) 1823 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1824 1825 dp->blksize = blksize; 1826 if (!sd_validate_blksize(NULL, dp->blksize)) 1827 dp->blksize = _2btol(scsipi_sense.lbs); 1828 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1829 dp->blksize = SD_DEFAULT_BLKSIZE; 1830 1831 /* 1832 * Create a pseudo-geometry. 1833 */ 1834 dp->heads = 64; 1835 dp->sectors = 32; 1836 dp->cyls = blocks / (dp->heads * dp->sectors); 1837 dp->disksize = _5btol(scsipi_sense.size); 1838 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1839 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1840 (unsigned long long)dp->disksize, 1841 (unsigned long long)blocks); 1842 dp->disksize = blocks; 1843 } 1844 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1845 1846 return (SDGP_RESULT_OK); 1847 } 1848 1849 /* 1850 * Get the scsi driver to send a full inquiry to the * device and use the 1851 * results to fill out the disk parameter structure. 1852 */ 1853 static int 1854 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1855 { 1856 u_int64_t blocks; 1857 int error, blksize; 1858 #if 0 1859 int i; 1860 u_int8_t *p; 1861 #endif 1862 1863 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1864 flags); 1865 if (blocks == 0) { 1866 struct scsipi_read_format_capacities cmd; 1867 struct { 1868 struct scsipi_capacity_list_header header; 1869 struct scsipi_capacity_descriptor desc; 1870 } __packed data; 1871 1872 memset(&cmd, 0, sizeof(cmd)); 1873 memset(&data, 0, sizeof(data)); 1874 cmd.opcode = READ_FORMAT_CAPACITIES; 1875 _lto2b(sizeof(data), cmd.length); 1876 1877 error = scsipi_command(sd->sc_periph, 1878 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1879 SDRETRIES, 20000, NULL, 1880 flags | XS_CTL_DATA_IN); 1881 if (error == EFTYPE) { 1882 /* Medium Format Corrupted, handle as not formatted */ 1883 return (SDGP_RESULT_UNFORMATTED); 1884 } 1885 if (error || data.header.length == 0) 1886 return (SDGP_RESULT_OFFLINE); 1887 1888 #if 0 1889 printf("rfc: length=%d\n", data.header.length); 1890 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"); 1891 #endif 1892 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1893 case SCSIPI_CAP_DESC_CODE_RESERVED: 1894 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1895 break; 1896 1897 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1898 return (SDGP_RESULT_UNFORMATTED); 1899 1900 case SCSIPI_CAP_DESC_CODE_NONE: 1901 return (SDGP_RESULT_OFFLINE); 1902 } 1903 1904 dp->disksize = blocks = _4btol(data.desc.nblks); 1905 if (blocks == 0) 1906 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1907 1908 blksize = _3btol(data.desc.blklen); 1909 1910 } else if (!sd_validate_blksize(NULL, blksize)) { 1911 struct sd_mode_sense_data scsipi_sense; 1912 int big, bsize; 1913 struct scsi_general_block_descriptor *bdesc; 1914 1915 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1916 error = sd_mode_sense(sd, 0, &scsipi_sense, 1917 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1918 if (!error) { 1919 if (big) { 1920 bdesc = (void *)(&scsipi_sense.header.big + 1); 1921 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1922 } else { 1923 bdesc = (void *)(&scsipi_sense.header.small + 1); 1924 bsize = scsipi_sense.header.small.blk_desc_len; 1925 } 1926 1927 #if 0 1928 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1929 printf("page 0 bsize=%d\n", bsize); 1930 printf("page 0 ok\n"); 1931 #endif 1932 1933 if (bsize >= 8) { 1934 blksize = _3btol(bdesc->blklen); 1935 } 1936 } 1937 } 1938 1939 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1940 blksize = SD_DEFAULT_BLKSIZE; 1941 1942 dp->blksize = blksize; 1943 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1944 return (0); 1945 } 1946 1947 static int 1948 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1949 { 1950 struct sd_mode_sense_data scsipi_sense; 1951 int error; 1952 int big, byte2; 1953 size_t poffset; 1954 union scsi_disk_pages *pages; 1955 1956 byte2 = SMS_DBD; 1957 again: 1958 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1959 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1960 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1961 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1962 flags | XS_CTL_SILENT, &big); 1963 if (error) { 1964 if (byte2 == SMS_DBD) { 1965 /* No result; try once more with DBD off */ 1966 byte2 = 0; 1967 goto again; 1968 } 1969 return (error); 1970 } 1971 1972 if (big) { 1973 poffset = sizeof scsipi_sense.header.big; 1974 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1975 } else { 1976 poffset = sizeof scsipi_sense.header.small; 1977 poffset += scsipi_sense.header.small.blk_desc_len; 1978 } 1979 1980 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1981 return ERESTART; 1982 1983 pages = (void *)((u_long)&scsipi_sense + poffset); 1984 #if 0 1985 { 1986 size_t i; 1987 u_int8_t *p; 1988 1989 printf("page 4 sense:"); 1990 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1991 i--, p++) 1992 printf(" %02x", *p); 1993 printf("\n"); 1994 printf("page 4 pg_code=%d sense=%p/%p\n", 1995 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1996 } 1997 #endif 1998 1999 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 2000 return (ERESTART); 2001 2002 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2003 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 2004 _3btol(pages->rigid_geometry.ncyl), 2005 pages->rigid_geometry.nheads, 2006 _2btol(pages->rigid_geometry.st_cyl_wp), 2007 _2btol(pages->rigid_geometry.st_cyl_rwc), 2008 _2btol(pages->rigid_geometry.land_zone))); 2009 2010 /* 2011 * KLUDGE!! (for zone recorded disks) 2012 * give a number of sectors so that sec * trks * cyls 2013 * is <= disk_size 2014 * can lead to wasted space! THINK ABOUT THIS ! 2015 */ 2016 dp->heads = pages->rigid_geometry.nheads; 2017 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 2018 if (dp->heads == 0 || dp->cyls == 0) 2019 return (ERESTART); 2020 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 2021 2022 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2023 if (dp->rot_rate == 0) 2024 dp->rot_rate = 3600; 2025 2026 #if 0 2027 printf("page 4 ok\n"); 2028 #endif 2029 return (0); 2030 } 2031 2032 static int 2033 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 2034 { 2035 struct sd_mode_sense_data scsipi_sense; 2036 int error; 2037 int big, byte2; 2038 size_t poffset; 2039 union scsi_disk_pages *pages; 2040 2041 byte2 = SMS_DBD; 2042 again: 2043 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2044 error = sd_mode_sense(sd, 0, &scsipi_sense, 2045 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2046 sizeof(scsipi_sense.pages.flex_geometry), 5, 2047 flags | XS_CTL_SILENT, &big); 2048 if (error) { 2049 if (byte2 == SMS_DBD) { 2050 /* No result; try once more with DBD off */ 2051 byte2 = 0; 2052 goto again; 2053 } 2054 return (error); 2055 } 2056 2057 if (big) { 2058 poffset = sizeof scsipi_sense.header.big; 2059 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2060 } else { 2061 poffset = sizeof scsipi_sense.header.small; 2062 poffset += scsipi_sense.header.small.blk_desc_len; 2063 } 2064 2065 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2066 return ERESTART; 2067 2068 pages = (void *)((u_long)&scsipi_sense + poffset); 2069 #if 0 2070 { 2071 size_t i; 2072 u_int8_t *p; 2073 2074 printf("page 5 sense:"); 2075 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2076 i--, p++) 2077 printf(" %02x", *p); 2078 printf("\n"); 2079 printf("page 5 pg_code=%d sense=%p/%p\n", 2080 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2081 } 2082 #endif 2083 2084 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2085 return (ERESTART); 2086 2087 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2088 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2089 _3btol(pages->flex_geometry.ncyl), 2090 pages->flex_geometry.nheads, 2091 pages->flex_geometry.ph_sec_tr, 2092 _2btol(pages->flex_geometry.bytes_s))); 2093 2094 dp->heads = pages->flex_geometry.nheads; 2095 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2096 dp->sectors = pages->flex_geometry.ph_sec_tr; 2097 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2098 return (ERESTART); 2099 2100 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2101 if (dp->rot_rate == 0) 2102 dp->rot_rate = 3600; 2103 2104 #if 0 2105 printf("page 5 ok\n"); 2106 #endif 2107 return (0); 2108 } 2109 2110 static int 2111 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2112 { 2113 int error; 2114 2115 /* 2116 * If offline, the SDEV_MEDIA_LOADED flag will be 2117 * cleared by the caller if necessary. 2118 */ 2119 if (sd->type == T_SIMPLE_DIRECT) { 2120 error = sd_get_simplifiedparms(sd, dp, flags); 2121 if (!error) 2122 disk_blocksize(&sd->sc_dk, dp->blksize); 2123 return (error); 2124 } 2125 2126 error = sd_get_capacity(sd, dp, flags); 2127 if (error) 2128 return (error); 2129 2130 disk_blocksize(&sd->sc_dk, dp->blksize); 2131 2132 if (sd->type == T_OPTICAL) 2133 goto page0; 2134 2135 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2136 if (!sd_get_parms_page5(sd, dp, flags) || 2137 !sd_get_parms_page4(sd, dp, flags)) 2138 goto setprops; 2139 } else { 2140 if (!sd_get_parms_page4(sd, dp, flags) || 2141 !sd_get_parms_page5(sd, dp, flags)) 2142 goto setprops; 2143 } 2144 2145 page0: 2146 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2147 /* Try calling driver's method for figuring out geometry. */ 2148 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2149 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2150 (sd->sc_periph, dp, dp->disksize)) { 2151 /* 2152 * Use adaptec standard fictitious geometry 2153 * this depends on which controller (e.g. 1542C is 2154 * different. but we have to put SOMETHING here..) 2155 */ 2156 dp->heads = 64; 2157 dp->sectors = 32; 2158 dp->cyls = dp->disksize / (64 * 32); 2159 } 2160 dp->rot_rate = 3600; 2161 2162 setprops: 2163 sd_set_geometry(sd); 2164 2165 return (SDGP_RESULT_OK); 2166 } 2167 2168 static int 2169 sd_flush(struct sd_softc *sd, int flags) 2170 { 2171 struct scsipi_periph *periph = sd->sc_periph; 2172 struct scsi_synchronize_cache_10 cmd; 2173 2174 /* 2175 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2176 * We issue with address 0 length 0, which should be 2177 * interpreted by the device as "all remaining blocks 2178 * starting at address 0". We ignore ILLEGAL REQUEST 2179 * in the event that the command is not supported by 2180 * the device, and poll for completion so that we know 2181 * that the cache has actually been flushed. 2182 * 2183 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2184 * command, as indicated by our quirks flags. 2185 * 2186 * XXX What about older devices? 2187 */ 2188 if (periph->periph_version < 2 || 2189 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2190 return (0); 2191 2192 sd->flags |= SDF_FLUSHING; 2193 memset(&cmd, 0, sizeof(cmd)); 2194 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2195 2196 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2197 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2198 } 2199 2200 static int 2201 sd_getcache(struct sd_softc *sd, int *bitsp) 2202 { 2203 struct scsipi_periph *periph = sd->sc_periph; 2204 struct sd_mode_sense_data scsipi_sense; 2205 int error, bits = 0; 2206 int big; 2207 union scsi_disk_pages *pages; 2208 2209 if (periph->periph_version < 2) 2210 return (EOPNOTSUPP); 2211 2212 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2213 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2214 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2215 if (error) 2216 return (error); 2217 2218 if (big) 2219 pages = (void *)(&scsipi_sense.header.big + 1); 2220 else 2221 pages = (void *)(&scsipi_sense.header.small + 1); 2222 2223 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2224 bits |= DKCACHE_READ; 2225 if (pages->caching_params.flags & CACHING_WCE) 2226 bits |= DKCACHE_WRITE; 2227 if (pages->caching_params.pg_code & PGCODE_PS) 2228 bits |= DKCACHE_SAVE; 2229 2230 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2231 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2232 sizeof(scsipi_sense.pages.caching_params), 2233 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2234 if (error == 0) { 2235 if (big) 2236 pages = (void *)(&scsipi_sense.header.big + 1); 2237 else 2238 pages = (void *)(&scsipi_sense.header.small + 1); 2239 2240 if (pages->caching_params.flags & CACHING_RCD) 2241 bits |= DKCACHE_RCHANGE; 2242 if (pages->caching_params.flags & CACHING_WCE) 2243 bits |= DKCACHE_WCHANGE; 2244 } 2245 2246 *bitsp = bits; 2247 2248 return (0); 2249 } 2250 2251 static int 2252 sd_setcache(struct sd_softc *sd, int bits) 2253 { 2254 struct scsipi_periph *periph = sd->sc_periph; 2255 struct sd_mode_sense_data scsipi_sense; 2256 int error; 2257 uint8_t oflags, byte2 = 0; 2258 int big; 2259 union scsi_disk_pages *pages; 2260 2261 if (periph->periph_version < 2) 2262 return (EOPNOTSUPP); 2263 2264 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2265 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2266 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2267 if (error) 2268 return (error); 2269 2270 if (big) 2271 pages = (void *)(&scsipi_sense.header.big + 1); 2272 else 2273 pages = (void *)(&scsipi_sense.header.small + 1); 2274 2275 oflags = pages->caching_params.flags; 2276 2277 if (bits & DKCACHE_READ) 2278 pages->caching_params.flags &= ~CACHING_RCD; 2279 else 2280 pages->caching_params.flags |= CACHING_RCD; 2281 2282 if (bits & DKCACHE_WRITE) 2283 pages->caching_params.flags |= CACHING_WCE; 2284 else 2285 pages->caching_params.flags &= ~CACHING_WCE; 2286 2287 if (oflags == pages->caching_params.flags) 2288 return (0); 2289 2290 pages->caching_params.pg_code &= PGCODE_MASK; 2291 2292 if (bits & DKCACHE_SAVE) 2293 byte2 |= SMS_SP; 2294 2295 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2296 sizeof(struct scsi_mode_page_header) + 2297 pages->caching_params.pg_length, 0, big)); 2298 } 2299 2300 static void 2301 sd_set_geometry(struct sd_softc *sd) 2302 { 2303 struct disk_geom *dg = &sd->sc_dk.dk_geom; 2304 2305 memset(dg, 0, sizeof(*dg)); 2306 2307 dg->dg_secperunit = sd->params.disksize; 2308 dg->dg_secsize = sd->params.blksize; 2309 dg->dg_nsectors = sd->params.sectors; 2310 dg->dg_ntracks = sd->params.heads; 2311 dg->dg_ncylinders = sd->params.cyls; 2312 2313 disk_set_info(sd->sc_dev, &sd->sc_dk, NULL); 2314 } 2315
Indexes created Mon Sep 22 13:09:51 GMT 2025