1 /* $NetBSD: sd.c,v 1.272 2008/04/05 15:47:01 cegger 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Originally written by Julian Elischer (julian@dialix.oz.au) 41 * for TRW Financial Systems for use under the MACH(2.5) operating system. 42 * 43 * TRW Financial Systems, in accordance with their agreement with Carnegie 44 * Mellon University, makes this software available to CMU to distribute 45 * or use in any manner that they see fit as long as this message is kept with 46 * the software. For this reason TFS also grants any other persons or 47 * organisations permission to use or modify this software. 48 * 49 * TFS supplies this software to be publicly redistributed 50 * on the understanding that TFS is not responsible for the correct 51 * functioning of this software in any circumstances. 52 * 53 * Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.272 2008/04/05 15:47:01 cegger Exp $"); 58 59 #include "opt_scsi.h" 60 #include "rnd.h" 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/kernel.h> 65 #include <sys/file.h> 66 #include <sys/stat.h> 67 #include <sys/ioctl.h> 68 #include <sys/scsiio.h> 69 #include <sys/buf.h> 70 #include <sys/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/errno.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/proc.h> 78 #include <sys/conf.h> 79 #include <sys/vnode.h> 80 #if NRND > 0 81 #include <sys/rnd.h> 82 #endif 83 84 #include <dev/scsipi/scsi_spc.h> 85 #include <dev/scsipi/scsipi_all.h> 86 #include <dev/scsipi/scsi_all.h> 87 #include <dev/scsipi/scsipi_disk.h> 88 #include <dev/scsipi/scsi_disk.h> 89 #include <dev/scsipi/scsiconf.h> 90 #include <dev/scsipi/scsipi_base.h> 91 #include <dev/scsipi/sdvar.h> 92 93 #include <prop/proplib.h> 94 95 #define SDUNIT(dev) DISKUNIT(dev) 96 #define SDPART(dev) DISKPART(dev) 97 #define SDMINOR(unit, part) DISKMINOR(unit, part) 98 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 99 100 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 101 102 #define SD_DEFAULT_BLKSIZE 512 103 104 static void sdminphys(struct buf *); 105 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 106 static int sdgetdisklabel(struct sd_softc *); 107 static void sdstart(struct scsipi_periph *); 108 static void sdrestart(void *); 109 static void sddone(struct scsipi_xfer *, int); 110 static bool sd_suspend(device_t PMF_FN_PROTO); 111 static void sd_shutdown(void *); 112 static int sd_interpret_sense(struct scsipi_xfer *); 113 114 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 115 int, int *); 116 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 117 int); 118 static int sd_validate_blksize(struct scsipi_periph *, int); 119 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 120 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 121 int); 122 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 123 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 124 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 125 int); 126 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 127 int); 128 129 static int sd_flush(struct sd_softc *, int); 130 static int sd_getcache(struct sd_softc *, int *); 131 static int sd_setcache(struct sd_softc *, int); 132 133 static int sdmatch(struct device *, struct cfdata *, void *); 134 static void sdattach(struct device *, struct device *, void *); 135 static int sdactivate(struct device *, enum devact); 136 static int sddetach(struct device *, int); 137 static void sd_set_properties(struct sd_softc *); 138 139 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 140 sdactivate); 141 142 extern struct cfdriver sd_cd; 143 144 static const struct scsipi_inquiry_pattern sd_patterns[] = { 145 {T_DIRECT, T_FIXED, 146 "", "", ""}, 147 {T_DIRECT, T_REMOV, 148 "", "", ""}, 149 {T_OPTICAL, T_FIXED, 150 "", "", ""}, 151 {T_OPTICAL, T_REMOV, 152 "", "", ""}, 153 {T_SIMPLE_DIRECT, T_FIXED, 154 "", "", ""}, 155 {T_SIMPLE_DIRECT, T_REMOV, 156 "", "", ""}, 157 }; 158 159 static dev_type_open(sdopen); 160 static dev_type_close(sdclose); 161 static dev_type_read(sdread); 162 static dev_type_write(sdwrite); 163 static dev_type_ioctl(sdioctl); 164 static dev_type_strategy(sdstrategy); 165 static dev_type_dump(sddump); 166 static dev_type_size(sdsize); 167 168 const struct bdevsw sd_bdevsw = { 169 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 170 }; 171 172 const struct cdevsw sd_cdevsw = { 173 sdopen, sdclose, sdread, sdwrite, sdioctl, 174 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 175 }; 176 177 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 178 179 static const struct scsipi_periphsw sd_switch = { 180 sd_interpret_sense, /* check our error handler first */ 181 sdstart, /* have a queue, served by this */ 182 NULL, /* have no async handler */ 183 sddone, /* deal with stats at interrupt time */ 184 }; 185 186 struct sd_mode_sense_data { 187 /* 188 * XXX 189 * We are not going to parse this as-is -- it just has to be large 190 * enough. 191 */ 192 union { 193 struct scsi_mode_parameter_header_6 small; 194 struct scsi_mode_parameter_header_10 big; 195 } header; 196 struct scsi_general_block_descriptor blk_desc; 197 union scsi_disk_pages pages; 198 }; 199 200 /* 201 * The routine called by the low level scsi routine when it discovers 202 * A device suitable for this driver 203 */ 204 static int 205 sdmatch(struct device *parent, struct cfdata *match, 206 void *aux) 207 { 208 struct scsipibus_attach_args *sa = aux; 209 int priority; 210 211 (void)scsipi_inqmatch(&sa->sa_inqbuf, 212 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 213 sizeof(sd_patterns[0]), &priority); 214 215 return (priority); 216 } 217 218 /* 219 * Attach routine common to atapi & scsi. 220 */ 221 static void 222 sdattach(struct device *parent, struct device *self, void *aux) 223 { 224 struct sd_softc *sd = device_private(self); 225 struct scsipibus_attach_args *sa = aux; 226 struct scsipi_periph *periph = sa->sa_periph; 227 int error, result; 228 struct disk_parms *dp = &sd->params; 229 char pbuf[9]; 230 231 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 232 233 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 234 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 235 if (sd->type == T_SIMPLE_DIRECT) 236 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 237 238 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 239 periph->periph_version == 0) 240 sd->flags |= SDF_ANCIENT; 241 242 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 243 244 callout_init(&sd->sc_callout, 0); 245 246 /* 247 * Store information needed to contact our base driver 248 */ 249 sd->sc_periph = periph; 250 251 periph->periph_dev = &sd->sc_dev; 252 periph->periph_switch = &sd_switch; 253 254 /* 255 * Increase our openings to the maximum-per-periph 256 * supported by the adapter. This will either be 257 * clamped down or grown by the adapter if necessary. 258 */ 259 periph->periph_openings = 260 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 261 periph->periph_flags |= PERIPH_GROW_OPENINGS; 262 263 /* 264 * Initialize and attach the disk structure. 265 */ 266 disk_init(&sd->sc_dk, device_xname(&sd->sc_dev), &sddkdriver); 267 disk_attach(&sd->sc_dk); 268 269 /* 270 * Use the subdriver to request information regarding the drive. 271 */ 272 aprint_naive("\n"); 273 aprint_normal("\n"); 274 275 error = scsipi_test_unit_ready(periph, 276 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 277 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 278 279 if (error) 280 result = SDGP_RESULT_OFFLINE; 281 else 282 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 283 aprint_normal_dev(&sd->sc_dev, ""); 284 switch (result) { 285 case SDGP_RESULT_OK: 286 format_bytes(pbuf, sizeof(pbuf), 287 (u_int64_t)dp->disksize * dp->blksize); 288 aprint_normal( 289 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 290 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 291 (unsigned long long)dp->disksize); 292 break; 293 294 case SDGP_RESULT_OFFLINE: 295 aprint_normal("drive offline"); 296 break; 297 298 case SDGP_RESULT_UNFORMATTED: 299 aprint_normal("unformatted media"); 300 break; 301 302 #ifdef DIAGNOSTIC 303 default: 304 panic("sdattach: unknown result from get_parms"); 305 break; 306 #endif 307 } 308 aprint_normal("\n"); 309 310 /* 311 * Establish a shutdown hook so that we can ensure that 312 * our data has actually made it onto the platter at 313 * shutdown time. Note that this relies on the fact 314 * that the shutdown hook code puts us at the head of 315 * the list (thus guaranteeing that our hook runs before 316 * our ancestors'). 317 */ 318 if ((sd->sc_sdhook = 319 shutdownhook_establish(sd_shutdown, sd)) == NULL) 320 aprint_error_dev(&sd->sc_dev, "WARNING: unable to establish shutdown hook\n"); 321 322 if (!pmf_device_register(self, sd_suspend, NULL)) 323 aprint_error_dev(self, "couldn't establish power handler\n"); 324 325 #if NRND > 0 326 /* 327 * attach the device into the random source list 328 */ 329 rnd_attach_source(&sd->rnd_source, device_xname(&sd->sc_dev), 330 RND_TYPE_DISK, 0); 331 #endif 332 333 /* Discover wedges on this disk. */ 334 dkwedge_discover(&sd->sc_dk); 335 336 sd_set_properties(sd); 337 } 338 339 static int 340 sdactivate(struct device *self, enum devact act) 341 { 342 int rv = 0; 343 344 switch (act) { 345 case DVACT_ACTIVATE: 346 rv = EOPNOTSUPP; 347 break; 348 349 case DVACT_DEACTIVATE: 350 /* 351 * Nothing to do; we key off the device's DVF_ACTIVE. 352 */ 353 break; 354 } 355 return (rv); 356 } 357 358 static int 359 sddetach(struct device *self, int flags) 360 { 361 struct sd_softc *sd = device_private(self); 362 int s, bmaj, cmaj, i, mn; 363 364 /* locate the major number */ 365 bmaj = bdevsw_lookup_major(&sd_bdevsw); 366 cmaj = cdevsw_lookup_major(&sd_cdevsw); 367 368 /* Nuke the vnodes for any open instances */ 369 for (i = 0; i < MAXPARTITIONS; i++) { 370 mn = SDMINOR(device_unit(self), i); 371 vdevgone(bmaj, mn, mn, VBLK); 372 vdevgone(cmaj, mn, mn, VCHR); 373 } 374 375 /* kill any pending restart */ 376 callout_stop(&sd->sc_callout); 377 378 /* Delete all of our wedges. */ 379 dkwedge_delall(&sd->sc_dk); 380 381 s = splbio(); 382 383 /* Kill off any queued buffers. */ 384 bufq_drain(sd->buf_queue); 385 386 bufq_free(sd->buf_queue); 387 388 /* Kill off any pending commands. */ 389 scsipi_kill_pending(sd->sc_periph); 390 391 splx(s); 392 393 /* Detach from the disk list. */ 394 disk_detach(&sd->sc_dk); 395 disk_destroy(&sd->sc_dk); 396 397 pmf_device_deregister(self); 398 shutdownhook_disestablish(sd->sc_sdhook); 399 400 #if NRND > 0 401 /* Unhook the entropy source. */ 402 rnd_detach_source(&sd->rnd_source); 403 #endif 404 405 return (0); 406 } 407 408 /* 409 * open the device. Make sure the partition info is a up-to-date as can be. 410 */ 411 static int 412 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 413 { 414 struct sd_softc *sd; 415 struct scsipi_periph *periph; 416 struct scsipi_adapter *adapt; 417 int unit, part; 418 int error; 419 420 unit = SDUNIT(dev); 421 if (unit >= sd_cd.cd_ndevs) 422 return (ENXIO); 423 sd = sd_cd.cd_devs[unit]; 424 if (sd == NULL) 425 return (ENXIO); 426 427 if (!device_is_active(&sd->sc_dev)) 428 return (ENODEV); 429 430 part = SDPART(dev); 431 432 mutex_enter(&sd->sc_dk.dk_openlock); 433 434 /* 435 * If there are wedges, and this is not RAW_PART, then we 436 * need to fail. 437 */ 438 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 439 error = EBUSY; 440 goto bad1; 441 } 442 443 periph = sd->sc_periph; 444 adapt = periph->periph_channel->chan_adapter; 445 446 SC_DEBUG(periph, SCSIPI_DB1, 447 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 448 sd_cd.cd_ndevs, part)); 449 450 /* 451 * If this is the first open of this device, add a reference 452 * to the adapter. 453 */ 454 if (sd->sc_dk.dk_openmask == 0 && 455 (error = scsipi_adapter_addref(adapt)) != 0) 456 goto bad1; 457 458 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 459 /* 460 * If any partition is open, but the disk has been invalidated, 461 * disallow further opens of non-raw partition 462 */ 463 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 464 (part != RAW_PART || fmt != S_IFCHR)) { 465 error = EIO; 466 goto bad2; 467 } 468 } else { 469 int silent; 470 471 if (part == RAW_PART && fmt == S_IFCHR) 472 silent = XS_CTL_SILENT; 473 else 474 silent = 0; 475 476 /* Check that it is still responding and ok. */ 477 error = scsipi_test_unit_ready(periph, 478 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 479 silent); 480 481 /* 482 * Start the pack spinning if necessary. Always allow the 483 * raw parition to be opened, for raw IOCTLs. Data transfers 484 * will check for SDEV_MEDIA_LOADED. 485 */ 486 if (error == EIO) { 487 int error2; 488 489 error2 = scsipi_start(periph, SSS_START, silent); 490 switch (error2) { 491 case 0: 492 error = 0; 493 break; 494 case EIO: 495 case EINVAL: 496 break; 497 default: 498 error = error2; 499 break; 500 } 501 } 502 if (error) { 503 if (silent) 504 goto out; 505 goto bad2; 506 } 507 508 periph->periph_flags |= PERIPH_OPEN; 509 510 if (periph->periph_flags & PERIPH_REMOVABLE) { 511 /* Lock the pack in. */ 512 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 513 XS_CTL_IGNORE_ILLEGAL_REQUEST | 514 XS_CTL_IGNORE_MEDIA_CHANGE | 515 XS_CTL_SILENT); 516 if (error) 517 goto bad3; 518 } 519 520 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 521 int param_error; 522 periph->periph_flags |= PERIPH_MEDIA_LOADED; 523 524 /* 525 * Load the physical device parameters. 526 * 527 * Note that if media is present but unformatted, 528 * we allow the open (so that it can be formatted!). 529 * The drive should refuse real I/O, if the media is 530 * unformatted. 531 */ 532 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 533 == SDGP_RESULT_OFFLINE) { 534 error = ENXIO; 535 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 536 goto bad3; 537 } 538 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 539 540 /* Load the partition info if not already loaded. */ 541 if (param_error == 0) { 542 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 543 error = EIO; 544 goto bad3; 545 } 546 SC_DEBUG(periph, SCSIPI_DB3, 547 ("Disklabel loaded ")); 548 } 549 } 550 } 551 552 /* Check that the partition exists. */ 553 if (part != RAW_PART && 554 (part >= sd->sc_dk.dk_label->d_npartitions || 555 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 556 error = ENXIO; 557 goto bad3; 558 } 559 560 out: /* Insure only one open at a time. */ 561 switch (fmt) { 562 case S_IFCHR: 563 sd->sc_dk.dk_copenmask |= (1 << part); 564 break; 565 case S_IFBLK: 566 sd->sc_dk.dk_bopenmask |= (1 << part); 567 break; 568 } 569 sd->sc_dk.dk_openmask = 570 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 571 572 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 573 mutex_exit(&sd->sc_dk.dk_openlock); 574 return (0); 575 576 bad3: 577 if (sd->sc_dk.dk_openmask == 0) { 578 if (periph->periph_flags & PERIPH_REMOVABLE) 579 scsipi_prevent(periph, SPAMR_ALLOW, 580 XS_CTL_IGNORE_ILLEGAL_REQUEST | 581 XS_CTL_IGNORE_MEDIA_CHANGE | 582 XS_CTL_SILENT); 583 periph->periph_flags &= ~PERIPH_OPEN; 584 } 585 586 bad2: 587 if (sd->sc_dk.dk_openmask == 0) 588 scsipi_adapter_delref(adapt); 589 590 bad1: 591 mutex_exit(&sd->sc_dk.dk_openlock); 592 return (error); 593 } 594 595 /* 596 * close the device.. only called if we are the LAST occurence of an open 597 * device. Convenient now but usually a pain. 598 */ 599 static int 600 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 601 { 602 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 603 struct scsipi_periph *periph = sd->sc_periph; 604 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 605 int part = SDPART(dev); 606 607 mutex_enter(&sd->sc_dk.dk_openlock); 608 switch (fmt) { 609 case S_IFCHR: 610 sd->sc_dk.dk_copenmask &= ~(1 << part); 611 break; 612 case S_IFBLK: 613 sd->sc_dk.dk_bopenmask &= ~(1 << part); 614 break; 615 } 616 sd->sc_dk.dk_openmask = 617 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 618 619 if (sd->sc_dk.dk_openmask == 0) { 620 /* 621 * If the disk cache needs flushing, and the disk supports 622 * it, do it now. 623 */ 624 if ((sd->flags & SDF_DIRTY) != 0) { 625 if (sd_flush(sd, 0)) { 626 aprint_error_dev(&sd->sc_dev, "cache synchronization failed\n"); 627 sd->flags &= ~SDF_FLUSHING; 628 } else 629 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 630 } 631 632 scsipi_wait_drain(periph); 633 634 if (periph->periph_flags & PERIPH_REMOVABLE) 635 scsipi_prevent(periph, SPAMR_ALLOW, 636 XS_CTL_IGNORE_ILLEGAL_REQUEST | 637 XS_CTL_IGNORE_NOT_READY | 638 XS_CTL_SILENT); 639 periph->periph_flags &= ~PERIPH_OPEN; 640 641 scsipi_wait_drain(periph); 642 643 scsipi_adapter_delref(adapt); 644 } 645 646 mutex_exit(&sd->sc_dk.dk_openlock); 647 return (0); 648 } 649 650 /* 651 * Actually translate the requested transfer into one the physical driver 652 * can understand. The transfer is described by a buf and will include 653 * only one physical transfer. 654 */ 655 static void 656 sdstrategy(struct buf *bp) 657 { 658 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 659 struct scsipi_periph *periph = sd->sc_periph; 660 struct disklabel *lp; 661 daddr_t blkno; 662 int s; 663 bool sector_aligned; 664 665 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 666 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 667 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 668 /* 669 * If the device has been made invalid, error out 670 */ 671 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 672 !device_is_active(&sd->sc_dev)) { 673 if (periph->periph_flags & PERIPH_OPEN) 674 bp->b_error = EIO; 675 else 676 bp->b_error = ENODEV; 677 goto done; 678 } 679 680 lp = sd->sc_dk.dk_label; 681 682 /* 683 * The transfer must be a whole number of blocks, offset must not be 684 * negative. 685 */ 686 if (lp->d_secsize == DEV_BSIZE) { 687 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 688 } else { 689 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 690 } 691 if (!sector_aligned || bp->b_blkno < 0) { 692 bp->b_error = EINVAL; 693 goto done; 694 } 695 /* 696 * If it's a null transfer, return immediatly 697 */ 698 if (bp->b_bcount == 0) 699 goto done; 700 701 /* 702 * Do bounds checking, adjust transfer. if error, process. 703 * If end of partition, just return. 704 */ 705 if (SDPART(bp->b_dev) == RAW_PART) { 706 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 707 sd->params.disksize512) <= 0) 708 goto done; 709 } else { 710 if (bounds_check_with_label(&sd->sc_dk, bp, 711 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 712 goto done; 713 } 714 715 /* 716 * Now convert the block number to absolute and put it in 717 * terms of the device's logical block size. 718 */ 719 if (lp->d_secsize == DEV_BSIZE) 720 blkno = bp->b_blkno; 721 else if (lp->d_secsize > DEV_BSIZE) 722 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 723 else 724 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 725 726 if (SDPART(bp->b_dev) != RAW_PART) 727 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 728 729 bp->b_rawblkno = blkno; 730 731 s = splbio(); 732 733 /* 734 * Place it in the queue of disk activities for this disk. 735 * 736 * XXX Only do disksort() if the current operating mode does not 737 * XXX include tagged queueing. 738 */ 739 BUFQ_PUT(sd->buf_queue, bp); 740 741 /* 742 * Tell the device to get going on the transfer if it's 743 * not doing anything, otherwise just wait for completion 744 */ 745 sdstart(sd->sc_periph); 746 747 splx(s); 748 return; 749 750 done: 751 /* 752 * Correctly set the buf to indicate a completed xfer 753 */ 754 bp->b_resid = bp->b_bcount; 755 biodone(bp); 756 } 757 758 /* 759 * sdstart looks to see if there is a buf waiting for the device 760 * and that the device is not already busy. If both are true, 761 * It dequeues the buf and creates a scsi command to perform the 762 * transfer in the buf. The transfer request will call scsipi_done 763 * on completion, which will in turn call this routine again 764 * so that the next queued transfer is performed. 765 * The bufs are queued by the strategy routine (sdstrategy) 766 * 767 * This routine is also called after other non-queued requests 768 * have been made of the scsi driver, to ensure that the queue 769 * continues to be drained. 770 * 771 * must be called at the correct (highish) spl level 772 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 773 */ 774 static void 775 sdstart(struct scsipi_periph *periph) 776 { 777 struct sd_softc *sd = (void *)periph->periph_dev; 778 struct disklabel *lp = sd->sc_dk.dk_label; 779 struct buf *bp = 0; 780 struct scsipi_rw_16 cmd16; 781 struct scsipi_rw_10 cmd_big; 782 struct scsi_rw_6 cmd_small; 783 struct scsipi_generic *cmdp; 784 struct scsipi_xfer *xs; 785 int nblks, cmdlen, error, flags; 786 787 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 788 /* 789 * Check if the device has room for another command 790 */ 791 while (periph->periph_active < periph->periph_openings) { 792 /* 793 * there is excess capacity, but a special waits 794 * It'll need the adapter as soon as we clear out of the 795 * way and let it run (user level wait). 796 */ 797 if (periph->periph_flags & PERIPH_WAITING) { 798 periph->periph_flags &= ~PERIPH_WAITING; 799 wakeup((void *)periph); 800 return; 801 } 802 803 /* 804 * If the device has become invalid, abort all the 805 * reads and writes until all files have been closed and 806 * re-opened 807 */ 808 if (__predict_false( 809 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 810 if ((bp = BUFQ_GET(sd->buf_queue)) != NULL) { 811 bp->b_error = EIO; 812 bp->b_resid = bp->b_bcount; 813 biodone(bp); 814 continue; 815 } else { 816 return; 817 } 818 } 819 820 /* 821 * See if there is a buf with work for us to do.. 822 */ 823 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 824 return; 825 826 /* 827 * We have a buf, now we should make a command. 828 */ 829 830 if (lp->d_secsize == DEV_BSIZE) 831 nblks = bp->b_bcount >> DEV_BSHIFT; 832 else 833 nblks = howmany(bp->b_bcount, lp->d_secsize); 834 835 /* 836 * Fill out the scsi command. Use the smallest CDB possible 837 * (6-byte, 10-byte, or 16-byte). 838 */ 839 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 840 ((nblks & 0xff) == nblks) && 841 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 842 /* 6-byte CDB */ 843 memset(&cmd_small, 0, sizeof(cmd_small)); 844 cmd_small.opcode = (bp->b_flags & B_READ) ? 845 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 846 _lto3b(bp->b_rawblkno, cmd_small.addr); 847 cmd_small.length = nblks & 0xff; 848 cmdlen = sizeof(cmd_small); 849 cmdp = (struct scsipi_generic *)&cmd_small; 850 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 851 /* 10-byte CDB */ 852 memset(&cmd_big, 0, sizeof(cmd_big)); 853 cmd_big.opcode = (bp->b_flags & B_READ) ? 854 READ_10 : WRITE_10; 855 _lto4b(bp->b_rawblkno, cmd_big.addr); 856 _lto2b(nblks, cmd_big.length); 857 cmdlen = sizeof(cmd_big); 858 cmdp = (struct scsipi_generic *)&cmd_big; 859 } else { 860 /* 16-byte CDB */ 861 memset(&cmd16, 0, sizeof(cmd16)); 862 cmd16.opcode = (bp->b_flags & B_READ) ? 863 READ_16 : WRITE_16; 864 _lto8b(bp->b_rawblkno, cmd16.addr); 865 _lto4b(nblks, cmd16.length); 866 cmdlen = sizeof(cmd16); 867 cmdp = (struct scsipi_generic *)&cmd16; 868 } 869 870 /* Instrumentation. */ 871 disk_busy(&sd->sc_dk); 872 873 /* 874 * Mark the disk dirty so that the cache will be 875 * flushed on close. 876 */ 877 if ((bp->b_flags & B_READ) == 0) 878 sd->flags |= SDF_DIRTY; 879 880 /* 881 * Figure out what flags to use. 882 */ 883 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 884 if (bp->b_flags & B_READ) 885 flags |= XS_CTL_DATA_IN; 886 else 887 flags |= XS_CTL_DATA_OUT; 888 889 /* 890 * Call the routine that chats with the adapter. 891 * Note: we cannot sleep as we may be an interrupt 892 */ 893 xs = scsipi_make_xs(periph, cmdp, cmdlen, 894 (u_char *)bp->b_data, bp->b_bcount, 895 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 896 if (__predict_false(xs == NULL)) { 897 /* 898 * out of memory. Keep this buffer in the queue, and 899 * retry later. 900 */ 901 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 902 periph); 903 return; 904 } 905 /* 906 * need to dequeue the buffer before queuing the command, 907 * because cdstart may be called recursively from the 908 * HBA driver 909 */ 910 #ifdef DIAGNOSTIC 911 if (BUFQ_GET(sd->buf_queue) != bp) 912 panic("sdstart(): dequeued wrong buf"); 913 #else 914 BUFQ_GET(sd->buf_queue); 915 #endif 916 error = scsipi_execute_xs(xs); 917 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 918 KASSERT(error == 0); 919 } 920 } 921 922 static void 923 sdrestart(void *v) 924 { 925 int s = splbio(); 926 sdstart((struct scsipi_periph *)v); 927 splx(s); 928 } 929 930 static void 931 sddone(struct scsipi_xfer *xs, int error) 932 { 933 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 934 struct buf *bp = xs->bp; 935 936 if (sd->flags & SDF_FLUSHING) { 937 /* Flush completed, no longer dirty. */ 938 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 939 } 940 941 if (bp) { 942 bp->b_error = error; 943 bp->b_resid = xs->resid; 944 if (error) { 945 /* on a read/write error bp->b_resid is zero, so fix */ 946 bp->b_resid = bp->b_bcount; 947 } 948 949 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 950 (bp->b_flags & B_READ)); 951 #if NRND > 0 952 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 953 #endif 954 955 biodone(bp); 956 } 957 } 958 959 static void 960 sdminphys(struct buf *bp) 961 { 962 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 963 long xmax; 964 965 /* 966 * If the device is ancient, we want to make sure that 967 * the transfer fits into a 6-byte cdb. 968 * 969 * XXX Note that the SCSI-I spec says that 256-block transfers 970 * are allowed in a 6-byte read/write, and are specified 971 * by settng the "length" to 0. However, we're conservative 972 * here, allowing only 255-block transfers in case an 973 * ancient device gets confused by length == 0. A length of 0 974 * in a 10-byte read/write actually means 0 blocks. 975 */ 976 if ((sd->flags & SDF_ANCIENT) && 977 ((sd->sc_periph->periph_flags & 978 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 979 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 980 981 if (bp->b_bcount > xmax) 982 bp->b_bcount = xmax; 983 } 984 985 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 986 } 987 988 static int 989 sdread(dev_t dev, struct uio *uio, int ioflag) 990 { 991 992 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 993 } 994 995 static int 996 sdwrite(dev_t dev, struct uio *uio, int ioflag) 997 { 998 999 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1000 } 1001 1002 /* 1003 * Perform special action on behalf of the user 1004 * Knows about the internals of this device 1005 */ 1006 static int 1007 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1008 { 1009 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1010 struct scsipi_periph *periph = sd->sc_periph; 1011 int part = SDPART(dev); 1012 int error = 0; 1013 #ifdef __HAVE_OLD_DISKLABEL 1014 struct disklabel *newlabel = NULL; 1015 #endif 1016 1017 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1018 1019 /* 1020 * If the device is not valid, some IOCTLs can still be 1021 * handled on the raw partition. Check this here. 1022 */ 1023 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1024 switch (cmd) { 1025 case DIOCKLABEL: 1026 case DIOCWLABEL: 1027 case DIOCLOCK: 1028 case DIOCEJECT: 1029 case ODIOCEJECT: 1030 case DIOCGCACHE: 1031 case DIOCSCACHE: 1032 case SCIOCIDENTIFY: 1033 case OSCIOCIDENTIFY: 1034 case SCIOCCOMMAND: 1035 case SCIOCDEBUG: 1036 if (part == RAW_PART) 1037 break; 1038 /* FALLTHROUGH */ 1039 default: 1040 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1041 return (ENODEV); 1042 else 1043 return (EIO); 1044 } 1045 } 1046 1047 switch (cmd) { 1048 case DIOCGDINFO: 1049 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1050 return (0); 1051 1052 #ifdef __HAVE_OLD_DISKLABEL 1053 case ODIOCGDINFO: 1054 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1055 if (newlabel == NULL) 1056 return EIO; 1057 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1058 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1059 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1060 else 1061 error = ENOTTY; 1062 free(newlabel, M_TEMP); 1063 return error; 1064 #endif 1065 1066 case DIOCGPART: 1067 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1068 ((struct partinfo *)addr)->part = 1069 &sd->sc_dk.dk_label->d_partitions[part]; 1070 return (0); 1071 1072 case DIOCWDINFO: 1073 case DIOCSDINFO: 1074 #ifdef __HAVE_OLD_DISKLABEL 1075 case ODIOCWDINFO: 1076 case ODIOCSDINFO: 1077 #endif 1078 { 1079 struct disklabel *lp; 1080 1081 if ((flag & FWRITE) == 0) 1082 return (EBADF); 1083 1084 #ifdef __HAVE_OLD_DISKLABEL 1085 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1086 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1087 if (newlabel == NULL) 1088 return EIO; 1089 memset(newlabel, 0, sizeof newlabel); 1090 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1091 lp = newlabel; 1092 } else 1093 #endif 1094 lp = (struct disklabel *)addr; 1095 1096 mutex_enter(&sd->sc_dk.dk_openlock); 1097 sd->flags |= SDF_LABELLING; 1098 1099 error = setdisklabel(sd->sc_dk.dk_label, 1100 lp, /*sd->sc_dk.dk_openmask : */0, 1101 sd->sc_dk.dk_cpulabel); 1102 if (error == 0) { 1103 if (cmd == DIOCWDINFO 1104 #ifdef __HAVE_OLD_DISKLABEL 1105 || cmd == ODIOCWDINFO 1106 #endif 1107 ) 1108 error = writedisklabel(SDLABELDEV(dev), 1109 sdstrategy, sd->sc_dk.dk_label, 1110 sd->sc_dk.dk_cpulabel); 1111 } 1112 1113 sd->flags &= ~SDF_LABELLING; 1114 mutex_exit(&sd->sc_dk.dk_openlock); 1115 #ifdef __HAVE_OLD_DISKLABEL 1116 if (newlabel != NULL) 1117 free(newlabel, M_TEMP); 1118 #endif 1119 return (error); 1120 } 1121 1122 case DIOCKLABEL: 1123 if (*(int *)addr) 1124 periph->periph_flags |= PERIPH_KEEP_LABEL; 1125 else 1126 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1127 return (0); 1128 1129 case DIOCWLABEL: 1130 if ((flag & FWRITE) == 0) 1131 return (EBADF); 1132 if (*(int *)addr) 1133 sd->flags |= SDF_WLABEL; 1134 else 1135 sd->flags &= ~SDF_WLABEL; 1136 return (0); 1137 1138 case DIOCLOCK: 1139 if (periph->periph_flags & PERIPH_REMOVABLE) 1140 return (scsipi_prevent(periph, 1141 (*(int *)addr) ? 1142 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1143 else 1144 return (ENOTTY); 1145 1146 case DIOCEJECT: 1147 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1148 return (ENOTTY); 1149 if (*(int *)addr == 0) { 1150 /* 1151 * Don't force eject: check that we are the only 1152 * partition open. If so, unlock it. 1153 */ 1154 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1155 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1156 sd->sc_dk.dk_openmask) { 1157 error = scsipi_prevent(periph, SPAMR_ALLOW, 1158 XS_CTL_IGNORE_NOT_READY); 1159 if (error) 1160 return (error); 1161 } else { 1162 return (EBUSY); 1163 } 1164 } 1165 /* FALLTHROUGH */ 1166 case ODIOCEJECT: 1167 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1168 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1169 1170 case DIOCGDEFLABEL: 1171 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1172 return (0); 1173 1174 #ifdef __HAVE_OLD_DISKLABEL 1175 case ODIOCGDEFLABEL: 1176 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1177 if (newlabel == NULL) 1178 return EIO; 1179 sdgetdefaultlabel(sd, newlabel); 1180 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1181 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1182 else 1183 error = ENOTTY; 1184 free(newlabel, M_TEMP); 1185 return error; 1186 #endif 1187 1188 case DIOCGCACHE: 1189 return (sd_getcache(sd, (int *) addr)); 1190 1191 case DIOCSCACHE: 1192 if ((flag & FWRITE) == 0) 1193 return (EBADF); 1194 return (sd_setcache(sd, *(int *) addr)); 1195 1196 case DIOCCACHESYNC: 1197 /* 1198 * XXX Do we really need to care about having a writable 1199 * file descriptor here? 1200 */ 1201 if ((flag & FWRITE) == 0) 1202 return (EBADF); 1203 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1204 error = sd_flush(sd, 0); 1205 if (error) 1206 sd->flags &= ~SDF_FLUSHING; 1207 else 1208 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1209 } else 1210 error = 0; 1211 return (error); 1212 1213 case DIOCAWEDGE: 1214 { 1215 struct dkwedge_info *dkw = (void *) addr; 1216 1217 if ((flag & FWRITE) == 0) 1218 return (EBADF); 1219 1220 /* If the ioctl happens here, the parent is us. */ 1221 strlcpy(dkw->dkw_parent, device_xname(&sd->sc_dev), sizeof(dkw->dkw_parent)); 1222 return (dkwedge_add(dkw)); 1223 } 1224 1225 case DIOCDWEDGE: 1226 { 1227 struct dkwedge_info *dkw = (void *) addr; 1228 1229 if ((flag & FWRITE) == 0) 1230 return (EBADF); 1231 1232 /* If the ioctl happens here, the parent is us. */ 1233 strlcpy(dkw->dkw_parent, device_xname(&sd->sc_dev), sizeof(dkw->dkw_parent)); 1234 return (dkwedge_del(dkw)); 1235 } 1236 1237 case DIOCLWEDGES: 1238 { 1239 struct dkwedge_list *dkwl = (void *) addr; 1240 1241 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1242 } 1243 1244 default: 1245 if (part != RAW_PART) 1246 return (ENOTTY); 1247 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1248 } 1249 1250 #ifdef DIAGNOSTIC 1251 panic("sdioctl: impossible"); 1252 #endif 1253 } 1254 1255 static void 1256 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1257 { 1258 1259 memset(lp, 0, sizeof(struct disklabel)); 1260 1261 lp->d_secsize = sd->params.blksize; 1262 lp->d_ntracks = sd->params.heads; 1263 lp->d_nsectors = sd->params.sectors; 1264 lp->d_ncylinders = sd->params.cyls; 1265 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1266 1267 switch (scsipi_periph_bustype(sd->sc_periph)) { 1268 case SCSIPI_BUSTYPE_SCSI: 1269 lp->d_type = DTYPE_SCSI; 1270 break; 1271 case SCSIPI_BUSTYPE_ATAPI: 1272 lp->d_type = DTYPE_ATAPI; 1273 break; 1274 } 1275 /* 1276 * XXX 1277 * We could probe the mode pages to figure out what kind of disc it is. 1278 * Is this worthwhile? 1279 */ 1280 strncpy(lp->d_typename, sd->name, 16); 1281 strncpy(lp->d_packname, "fictitious", 16); 1282 lp->d_secperunit = sd->params.disksize; 1283 lp->d_rpm = sd->params.rot_rate; 1284 lp->d_interleave = 1; 1285 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1286 D_REMOVABLE : 0; 1287 1288 lp->d_partitions[RAW_PART].p_offset = 0; 1289 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1290 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1291 lp->d_npartitions = RAW_PART + 1; 1292 1293 lp->d_magic = DISKMAGIC; 1294 lp->d_magic2 = DISKMAGIC; 1295 lp->d_checksum = dkcksum(lp); 1296 } 1297 1298 1299 /* 1300 * Load the label information on the named device 1301 */ 1302 static int 1303 sdgetdisklabel(struct sd_softc *sd) 1304 { 1305 struct disklabel *lp = sd->sc_dk.dk_label; 1306 const char *errstring; 1307 1308 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1309 1310 sdgetdefaultlabel(sd, lp); 1311 1312 if (lp->d_secpercyl == 0) { 1313 lp->d_secpercyl = 100; 1314 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1315 } 1316 1317 /* 1318 * Call the generic disklabel extraction routine 1319 */ 1320 errstring = readdisklabel(MAKESDDEV(0, device_unit(&sd->sc_dev), 1321 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1322 if (errstring) { 1323 aprint_error_dev(&sd->sc_dev, "%s\n", errstring); 1324 return EIO; 1325 } 1326 return 0; 1327 } 1328 1329 static void 1330 sd_shutdown(void *arg) 1331 { 1332 struct sd_softc *sd = arg; 1333 1334 /* 1335 * If the disk cache needs to be flushed, and the disk supports 1336 * it, flush it. We're cold at this point, so we poll for 1337 * completion. 1338 */ 1339 if ((sd->flags & SDF_DIRTY) != 0) { 1340 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1341 aprint_error_dev(&sd->sc_dev, "cache synchronization failed\n"); 1342 sd->flags &= ~SDF_FLUSHING; 1343 } else 1344 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1345 } 1346 } 1347 1348 static bool 1349 sd_suspend(device_t dv PMF_FN_ARGS) 1350 { 1351 struct sd_softc *sd = device_private(dv); 1352 1353 sd_shutdown(sd); /* XXX no need to poll */ 1354 return true; 1355 } 1356 1357 /* 1358 * Check Errors 1359 */ 1360 static int 1361 sd_interpret_sense(struct scsipi_xfer *xs) 1362 { 1363 struct scsipi_periph *periph = xs->xs_periph; 1364 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1365 struct sd_softc *sd = (void *)periph->periph_dev; 1366 int s, error, retval = EJUSTRETURN; 1367 1368 /* 1369 * If the periph is already recovering, just do the normal 1370 * error processing. 1371 */ 1372 if (periph->periph_flags & PERIPH_RECOVERING) 1373 return (retval); 1374 1375 /* 1376 * Ignore errors from accessing illegal fields (e.g. trying to 1377 * lock the door of a digicam, which doesn't have a door that 1378 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1379 */ 1380 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1381 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1382 sense->asc == 0x24 && 1383 sense->ascq == 0x00) { /* Illegal field in CDB */ 1384 if (!(xs->xs_control & XS_CTL_SILENT)) { 1385 scsipi_printaddr(periph); 1386 printf("no door lock\n"); 1387 } 1388 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1389 return (retval); 1390 } 1391 1392 1393 1394 /* 1395 * If the device is not open yet, let the generic code handle it. 1396 */ 1397 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1398 return (retval); 1399 1400 /* 1401 * If it isn't a extended or extended/deferred error, let 1402 * the generic code handle it. 1403 */ 1404 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1405 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1406 return (retval); 1407 1408 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1409 sense->asc == 0x4) { 1410 if (sense->ascq == 0x01) { 1411 /* 1412 * Unit In The Process Of Becoming Ready. 1413 */ 1414 printf("%s: waiting for pack to spin up...\n", 1415 device_xname(&sd->sc_dev)); 1416 if (!callout_pending(&periph->periph_callout)) 1417 scsipi_periph_freeze(periph, 1); 1418 callout_reset(&periph->periph_callout, 1419 5 * hz, scsipi_periph_timed_thaw, periph); 1420 retval = ERESTART; 1421 } else if (sense->ascq == 0x02) { 1422 printf("%s: pack is stopped, restarting...\n", 1423 device_xname(&sd->sc_dev)); 1424 s = splbio(); 1425 periph->periph_flags |= PERIPH_RECOVERING; 1426 splx(s); 1427 error = scsipi_start(periph, SSS_START, 1428 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1429 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1430 if (error) { 1431 aprint_error_dev(&sd->sc_dev, "unable to restart pack\n"); 1432 retval = error; 1433 } else 1434 retval = ERESTART; 1435 s = splbio(); 1436 periph->periph_flags &= ~PERIPH_RECOVERING; 1437 splx(s); 1438 } 1439 } 1440 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1441 sense->asc == 0x31 && 1442 sense->ascq == 0x00) { /* maybe for any asq ? */ 1443 /* Medium Format Corrupted */ 1444 retval = EFTYPE; 1445 } 1446 return (retval); 1447 } 1448 1449 1450 static int 1451 sdsize(dev_t dev) 1452 { 1453 struct sd_softc *sd; 1454 int part, unit, omask; 1455 int size; 1456 1457 unit = SDUNIT(dev); 1458 if (unit >= sd_cd.cd_ndevs) 1459 return (-1); 1460 sd = sd_cd.cd_devs[unit]; 1461 if (sd == NULL) 1462 return (-1); 1463 1464 if (!device_is_active(&sd->sc_dev)) 1465 return (-1); 1466 1467 part = SDPART(dev); 1468 omask = sd->sc_dk.dk_openmask & (1 << part); 1469 1470 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1471 return (-1); 1472 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1473 size = -1; 1474 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1475 size = -1; 1476 else 1477 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1478 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1479 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1480 return (-1); 1481 return (size); 1482 } 1483 1484 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1485 static struct scsipi_xfer sx; 1486 static int sddoingadump; 1487 1488 /* 1489 * dump all of physical memory into the partition specified, starting 1490 * at offset 'dumplo' into the partition. 1491 */ 1492 static int 1493 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1494 { 1495 struct sd_softc *sd; /* disk unit to do the I/O */ 1496 struct disklabel *lp; /* disk's disklabel */ 1497 int unit, part; 1498 int sectorsize; /* size of a disk sector */ 1499 int nsects; /* number of sectors in partition */ 1500 int sectoff; /* sector offset of partition */ 1501 int totwrt; /* total number of sectors left to write */ 1502 int nwrt; /* current number of sectors to write */ 1503 struct scsipi_rw_10 cmd; /* write command */ 1504 struct scsipi_xfer *xs; /* ... convenience */ 1505 struct scsipi_periph *periph; 1506 struct scsipi_channel *chan; 1507 1508 /* Check if recursive dump; if so, punt. */ 1509 if (sddoingadump) 1510 return (EFAULT); 1511 1512 /* Mark as active early. */ 1513 sddoingadump = 1; 1514 1515 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1516 part = SDPART(dev); 1517 1518 /* Check for acceptable drive number. */ 1519 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1520 return (ENXIO); 1521 1522 if (!device_is_active(&sd->sc_dev)) 1523 return (ENODEV); 1524 1525 periph = sd->sc_periph; 1526 chan = periph->periph_channel; 1527 1528 /* Make sure it was initialized. */ 1529 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1530 return (ENXIO); 1531 1532 /* Convert to disk sectors. Request must be a multiple of size. */ 1533 lp = sd->sc_dk.dk_label; 1534 sectorsize = lp->d_secsize; 1535 if ((size % sectorsize) != 0) 1536 return (EFAULT); 1537 totwrt = size / sectorsize; 1538 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1539 1540 nsects = lp->d_partitions[part].p_size; 1541 sectoff = lp->d_partitions[part].p_offset; 1542 1543 /* Check transfer bounds against partition size. */ 1544 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1545 return (EINVAL); 1546 1547 /* Offset block number to start of partition. */ 1548 blkno += sectoff; 1549 1550 xs = &sx; 1551 1552 while (totwrt > 0) { 1553 nwrt = totwrt; /* XXX */ 1554 #ifndef SD_DUMP_NOT_TRUSTED 1555 /* 1556 * Fill out the scsi command 1557 */ 1558 memset(&cmd, 0, sizeof(cmd)); 1559 cmd.opcode = WRITE_10; 1560 _lto4b(blkno, cmd.addr); 1561 _lto2b(nwrt, cmd.length); 1562 /* 1563 * Fill out the scsipi_xfer structure 1564 * Note: we cannot sleep as we may be an interrupt 1565 * don't use scsipi_command() as it may want to wait 1566 * for an xs. 1567 */ 1568 memset(xs, 0, sizeof(sx)); 1569 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1570 XS_CTL_DATA_OUT; 1571 xs->xs_status = 0; 1572 xs->xs_periph = periph; 1573 xs->xs_retries = SDRETRIES; 1574 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1575 xs->cmd = (struct scsipi_generic *)&cmd; 1576 xs->cmdlen = sizeof(cmd); 1577 xs->resid = nwrt * sectorsize; 1578 xs->error = XS_NOERROR; 1579 xs->bp = 0; 1580 xs->data = va; 1581 xs->datalen = nwrt * sectorsize; 1582 callout_init(&xs->xs_callout, 0); 1583 1584 /* 1585 * Pass all this info to the scsi driver. 1586 */ 1587 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1588 if ((xs->xs_status & XS_STS_DONE) == 0 || 1589 xs->error != XS_NOERROR) 1590 return (EIO); 1591 #else /* SD_DUMP_NOT_TRUSTED */ 1592 /* Let's just talk about this first... */ 1593 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1594 delay(500 * 1000); /* half a second */ 1595 #endif /* SD_DUMP_NOT_TRUSTED */ 1596 1597 /* update block count */ 1598 totwrt -= nwrt; 1599 blkno += nwrt; 1600 va = (char *)va + sectorsize * nwrt; 1601 } 1602 sddoingadump = 0; 1603 return (0); 1604 } 1605 1606 static int 1607 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1608 int page, int flags, int *big) 1609 { 1610 1611 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1612 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1613 *big = 1; 1614 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1615 size + sizeof(struct scsi_mode_parameter_header_10), 1616 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1617 } else { 1618 *big = 0; 1619 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1620 size + sizeof(struct scsi_mode_parameter_header_6), 1621 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1622 } 1623 } 1624 1625 static int 1626 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1627 int flags, int big) 1628 { 1629 1630 if (big) { 1631 struct scsi_mode_parameter_header_10 *header = sense; 1632 1633 _lto2b(0, header->data_length); 1634 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1635 size + sizeof(struct scsi_mode_parameter_header_10), 1636 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1637 } else { 1638 struct scsi_mode_parameter_header_6 *header = sense; 1639 1640 header->data_length = 0; 1641 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1642 size + sizeof(struct scsi_mode_parameter_header_6), 1643 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1644 } 1645 } 1646 1647 /* 1648 * sd_validate_blksize: 1649 * 1650 * Validate the block size. Print error if periph is specified, 1651 */ 1652 static int 1653 sd_validate_blksize(struct scsipi_periph *periph, int len) 1654 { 1655 1656 switch (len) { 1657 case 256: 1658 case 512: 1659 case 1024: 1660 case 2048: 1661 case 4096: 1662 return 1; 1663 } 1664 1665 if (periph) { 1666 scsipi_printaddr(periph); 1667 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1668 (len ^ (1 << (ffs(len) - 1))) ? 1669 "preposterous" : "unsupported", 1670 len, SD_DEFAULT_BLKSIZE); 1671 } 1672 1673 return 0; 1674 } 1675 1676 /* 1677 * sd_read_capacity: 1678 * 1679 * Find out from the device what its capacity is. 1680 */ 1681 static u_int64_t 1682 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1683 { 1684 union { 1685 struct scsipi_read_capacity_10 cmd; 1686 struct scsipi_read_capacity_16 cmd16; 1687 } cmd; 1688 union { 1689 struct scsipi_read_capacity_10_data data; 1690 struct scsipi_read_capacity_16_data data16; 1691 } *datap; 1692 uint64_t rv; 1693 1694 memset(&cmd, 0, sizeof(cmd)); 1695 cmd.cmd.opcode = READ_CAPACITY_10; 1696 1697 /* 1698 * Don't allocate data buffer on stack; 1699 * The lower driver layer might use the same stack and 1700 * if it uses region which is in the same cacheline, 1701 * cache flush ops against the data buffer won't work properly. 1702 */ 1703 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1704 if (datap == NULL) 1705 return 0; 1706 1707 /* 1708 * If the command works, interpret the result as a 4 byte 1709 * number of blocks 1710 */ 1711 rv = 0; 1712 memset(datap, 0, sizeof(datap->data)); 1713 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1714 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1715 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1716 goto out; 1717 1718 if (_4btol(datap->data.addr) != 0xffffffff) { 1719 *blksize = _4btol(datap->data.length); 1720 rv = _4btol(datap->data.addr) + 1; 1721 goto out; 1722 } 1723 1724 /* 1725 * Device is larger than can be reflected by READ CAPACITY (10). 1726 * Try READ CAPACITY (16). 1727 */ 1728 1729 memset(&cmd, 0, sizeof(cmd)); 1730 cmd.cmd16.opcode = READ_CAPACITY_16; 1731 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1732 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1733 1734 memset(datap, 0, sizeof(datap->data16)); 1735 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1736 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1737 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1738 goto out; 1739 1740 *blksize = _4btol(datap->data16.length); 1741 rv = _8btol(datap->data16.addr) + 1; 1742 1743 out: 1744 free(datap, M_TEMP); 1745 return rv; 1746 } 1747 1748 static int 1749 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1750 { 1751 struct { 1752 struct scsi_mode_parameter_header_6 header; 1753 /* no block descriptor */ 1754 u_int8_t pg_code; /* page code (should be 6) */ 1755 u_int8_t pg_length; /* page length (should be 11) */ 1756 u_int8_t wcd; /* bit0: cache disable */ 1757 u_int8_t lbs[2]; /* logical block size */ 1758 u_int8_t size[5]; /* number of log. blocks */ 1759 u_int8_t pp; /* power/performance */ 1760 u_int8_t flags; 1761 u_int8_t resvd; 1762 } scsipi_sense; 1763 u_int64_t blocks; 1764 int error, blksize; 1765 1766 /* 1767 * sd_read_capacity (ie "read capacity") and mode sense page 6 1768 * give the same information. Do both for now, and check 1769 * for consistency. 1770 * XXX probably differs for removable media 1771 */ 1772 dp->blksize = SD_DEFAULT_BLKSIZE; 1773 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1774 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1775 1776 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1777 &scsipi_sense.header, sizeof(scsipi_sense), 1778 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1779 1780 if (error != 0) 1781 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1782 1783 dp->blksize = blksize; 1784 if (!sd_validate_blksize(NULL, dp->blksize)) 1785 dp->blksize = _2btol(scsipi_sense.lbs); 1786 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1787 dp->blksize = SD_DEFAULT_BLKSIZE; 1788 1789 /* 1790 * Create a pseudo-geometry. 1791 */ 1792 dp->heads = 64; 1793 dp->sectors = 32; 1794 dp->cyls = blocks / (dp->heads * dp->sectors); 1795 dp->disksize = _5btol(scsipi_sense.size); 1796 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1797 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1798 (unsigned long long)dp->disksize, 1799 (unsigned long long)blocks); 1800 dp->disksize = blocks; 1801 } 1802 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1803 1804 return (SDGP_RESULT_OK); 1805 } 1806 1807 /* 1808 * Get the scsi driver to send a full inquiry to the * device and use the 1809 * results to fill out the disk parameter structure. 1810 */ 1811 static int 1812 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1813 { 1814 u_int64_t blocks; 1815 int error, blksize; 1816 #if 0 1817 int i; 1818 u_int8_t *p; 1819 #endif 1820 1821 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1822 flags); 1823 if (blocks == 0) { 1824 struct scsipi_read_format_capacities cmd; 1825 struct { 1826 struct scsipi_capacity_list_header header; 1827 struct scsipi_capacity_descriptor desc; 1828 } __packed data; 1829 1830 memset(&cmd, 0, sizeof(cmd)); 1831 memset(&data, 0, sizeof(data)); 1832 cmd.opcode = READ_FORMAT_CAPACITIES; 1833 _lto2b(sizeof(data), cmd.length); 1834 1835 error = scsipi_command(sd->sc_periph, 1836 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1837 SDRETRIES, 20000, NULL, 1838 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1839 if (error == EFTYPE) { 1840 /* Medium Format Corrupted, handle as not formatted */ 1841 return (SDGP_RESULT_UNFORMATTED); 1842 } 1843 if (error || data.header.length == 0) 1844 return (SDGP_RESULT_OFFLINE); 1845 1846 #if 0 1847 printf("rfc: length=%d\n", data.header.length); 1848 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"); 1849 #endif 1850 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1851 case SCSIPI_CAP_DESC_CODE_RESERVED: 1852 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1853 break; 1854 1855 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1856 return (SDGP_RESULT_UNFORMATTED); 1857 1858 case SCSIPI_CAP_DESC_CODE_NONE: 1859 return (SDGP_RESULT_OFFLINE); 1860 } 1861 1862 dp->disksize = blocks = _4btol(data.desc.nblks); 1863 if (blocks == 0) 1864 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1865 1866 blksize = _3btol(data.desc.blklen); 1867 1868 } else if (!sd_validate_blksize(NULL, blksize)) { 1869 struct sd_mode_sense_data scsipi_sense; 1870 int big, bsize; 1871 struct scsi_general_block_descriptor *bdesc; 1872 1873 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1874 error = sd_mode_sense(sd, 0, &scsipi_sense, 1875 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1876 if (!error) { 1877 if (big) { 1878 bdesc = (void *)(&scsipi_sense.header.big + 1); 1879 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1880 } else { 1881 bdesc = (void *)(&scsipi_sense.header.small + 1); 1882 bsize = scsipi_sense.header.small.blk_desc_len; 1883 } 1884 1885 #if 0 1886 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1887 printf("page 0 bsize=%d\n", bsize); 1888 printf("page 0 ok\n"); 1889 #endif 1890 1891 if (bsize >= 8) { 1892 blksize = _3btol(bdesc->blklen); 1893 } 1894 } 1895 } 1896 1897 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1898 blksize = SD_DEFAULT_BLKSIZE; 1899 1900 dp->blksize = blksize; 1901 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1902 return (0); 1903 } 1904 1905 static int 1906 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1907 { 1908 struct sd_mode_sense_data scsipi_sense; 1909 int error; 1910 int big, byte2; 1911 size_t poffset; 1912 union scsi_disk_pages *pages; 1913 1914 byte2 = SMS_DBD; 1915 again: 1916 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1917 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1918 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1919 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1920 flags | XS_CTL_SILENT, &big); 1921 if (error) { 1922 if (byte2 == SMS_DBD) { 1923 /* No result; try once more with DBD off */ 1924 byte2 = 0; 1925 goto again; 1926 } 1927 return (error); 1928 } 1929 1930 if (big) { 1931 poffset = sizeof scsipi_sense.header.big; 1932 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1933 } else { 1934 poffset = sizeof scsipi_sense.header.small; 1935 poffset += scsipi_sense.header.small.blk_desc_len; 1936 } 1937 1938 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1939 return ERESTART; 1940 1941 pages = (void *)((u_long)&scsipi_sense + poffset); 1942 #if 0 1943 { 1944 size_t i; 1945 u_int8_t *p; 1946 1947 printf("page 4 sense:"); 1948 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1949 i--, p++) 1950 printf(" %02x", *p); 1951 printf("\n"); 1952 printf("page 4 pg_code=%d sense=%p/%p\n", 1953 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1954 } 1955 #endif 1956 1957 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1958 return (ERESTART); 1959 1960 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1961 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1962 _3btol(pages->rigid_geometry.ncyl), 1963 pages->rigid_geometry.nheads, 1964 _2btol(pages->rigid_geometry.st_cyl_wp), 1965 _2btol(pages->rigid_geometry.st_cyl_rwc), 1966 _2btol(pages->rigid_geometry.land_zone))); 1967 1968 /* 1969 * KLUDGE!! (for zone recorded disks) 1970 * give a number of sectors so that sec * trks * cyls 1971 * is <= disk_size 1972 * can lead to wasted space! THINK ABOUT THIS ! 1973 */ 1974 dp->heads = pages->rigid_geometry.nheads; 1975 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1976 if (dp->heads == 0 || dp->cyls == 0) 1977 return (ERESTART); 1978 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1979 1980 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1981 if (dp->rot_rate == 0) 1982 dp->rot_rate = 3600; 1983 1984 #if 0 1985 printf("page 4 ok\n"); 1986 #endif 1987 return (0); 1988 } 1989 1990 static int 1991 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1992 { 1993 struct sd_mode_sense_data scsipi_sense; 1994 int error; 1995 int big, byte2; 1996 size_t poffset; 1997 union scsi_disk_pages *pages; 1998 1999 byte2 = SMS_DBD; 2000 again: 2001 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2002 error = sd_mode_sense(sd, 0, &scsipi_sense, 2003 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2004 sizeof(scsipi_sense.pages.flex_geometry), 5, 2005 flags | XS_CTL_SILENT, &big); 2006 if (error) { 2007 if (byte2 == SMS_DBD) { 2008 /* No result; try once more with DBD off */ 2009 byte2 = 0; 2010 goto again; 2011 } 2012 return (error); 2013 } 2014 2015 if (big) { 2016 poffset = sizeof scsipi_sense.header.big; 2017 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2018 } else { 2019 poffset = sizeof scsipi_sense.header.small; 2020 poffset += scsipi_sense.header.small.blk_desc_len; 2021 } 2022 2023 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2024 return ERESTART; 2025 2026 pages = (void *)((u_long)&scsipi_sense + poffset); 2027 #if 0 2028 { 2029 size_t i; 2030 u_int8_t *p; 2031 2032 printf("page 5 sense:"); 2033 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2034 i--, p++) 2035 printf(" %02x", *p); 2036 printf("\n"); 2037 printf("page 5 pg_code=%d sense=%p/%p\n", 2038 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2039 } 2040 #endif 2041 2042 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2043 return (ERESTART); 2044 2045 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2046 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2047 _3btol(pages->flex_geometry.ncyl), 2048 pages->flex_geometry.nheads, 2049 pages->flex_geometry.ph_sec_tr, 2050 _2btol(pages->flex_geometry.bytes_s))); 2051 2052 dp->heads = pages->flex_geometry.nheads; 2053 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2054 dp->sectors = pages->flex_geometry.ph_sec_tr; 2055 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2056 return (ERESTART); 2057 2058 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2059 if (dp->rot_rate == 0) 2060 dp->rot_rate = 3600; 2061 2062 #if 0 2063 printf("page 5 ok\n"); 2064 #endif 2065 return (0); 2066 } 2067 2068 static int 2069 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2070 { 2071 int error; 2072 2073 /* 2074 * If offline, the SDEV_MEDIA_LOADED flag will be 2075 * cleared by the caller if necessary. 2076 */ 2077 if (sd->type == T_SIMPLE_DIRECT) { 2078 error = sd_get_simplifiedparms(sd, dp, flags); 2079 if (!error) 2080 disk_blocksize(&sd->sc_dk, dp->blksize); 2081 return (error); 2082 } 2083 2084 error = sd_get_capacity(sd, dp, flags); 2085 if (error) 2086 return (error); 2087 2088 disk_blocksize(&sd->sc_dk, dp->blksize); 2089 2090 if (sd->type == T_OPTICAL) 2091 goto page0; 2092 2093 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2094 if (!sd_get_parms_page5(sd, dp, flags) || 2095 !sd_get_parms_page4(sd, dp, flags)) 2096 return (SDGP_RESULT_OK); 2097 } else { 2098 if (!sd_get_parms_page4(sd, dp, flags) || 2099 !sd_get_parms_page5(sd, dp, flags)) 2100 return (SDGP_RESULT_OK); 2101 } 2102 2103 page0: 2104 printf("%s: fabricating a geometry\n", device_xname(&sd->sc_dev)); 2105 /* Try calling driver's method for figuring out geometry. */ 2106 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2107 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2108 (sd->sc_periph, dp, dp->disksize)) { 2109 /* 2110 * Use adaptec standard fictitious geometry 2111 * this depends on which controller (e.g. 1542C is 2112 * different. but we have to put SOMETHING here..) 2113 */ 2114 dp->heads = 64; 2115 dp->sectors = 32; 2116 dp->cyls = dp->disksize / (64 * 32); 2117 } 2118 dp->rot_rate = 3600; 2119 return (SDGP_RESULT_OK); 2120 } 2121 2122 static int 2123 sd_flush(struct sd_softc *sd, int flags) 2124 { 2125 struct scsipi_periph *periph = sd->sc_periph; 2126 struct scsi_synchronize_cache_10 cmd; 2127 2128 /* 2129 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2130 * We issue with address 0 length 0, which should be 2131 * interpreted by the device as "all remaining blocks 2132 * starting at address 0". We ignore ILLEGAL REQUEST 2133 * in the event that the command is not supported by 2134 * the device, and poll for completion so that we know 2135 * that the cache has actually been flushed. 2136 * 2137 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2138 * command, as indicated by our quirks flags. 2139 * 2140 * XXX What about older devices? 2141 */ 2142 if (periph->periph_version < 2 || 2143 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2144 return (0); 2145 2146 sd->flags |= SDF_FLUSHING; 2147 memset(&cmd, 0, sizeof(cmd)); 2148 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2149 2150 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2151 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2152 } 2153 2154 static int 2155 sd_getcache(struct sd_softc *sd, int *bitsp) 2156 { 2157 struct scsipi_periph *periph = sd->sc_periph; 2158 struct sd_mode_sense_data scsipi_sense; 2159 int error, bits = 0; 2160 int big; 2161 union scsi_disk_pages *pages; 2162 2163 if (periph->periph_version < 2) 2164 return (EOPNOTSUPP); 2165 2166 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2167 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2168 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2169 if (error) 2170 return (error); 2171 2172 if (big) 2173 pages = (void *)(&scsipi_sense.header.big + 1); 2174 else 2175 pages = (void *)(&scsipi_sense.header.small + 1); 2176 2177 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2178 bits |= DKCACHE_READ; 2179 if (pages->caching_params.flags & CACHING_WCE) 2180 bits |= DKCACHE_WRITE; 2181 if (pages->caching_params.pg_code & PGCODE_PS) 2182 bits |= DKCACHE_SAVE; 2183 2184 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2185 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2186 sizeof(scsipi_sense.pages.caching_params), 2187 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2188 if (error == 0) { 2189 if (big) 2190 pages = (void *)(&scsipi_sense.header.big + 1); 2191 else 2192 pages = (void *)(&scsipi_sense.header.small + 1); 2193 2194 if (pages->caching_params.flags & CACHING_RCD) 2195 bits |= DKCACHE_RCHANGE; 2196 if (pages->caching_params.flags & CACHING_WCE) 2197 bits |= DKCACHE_WCHANGE; 2198 } 2199 2200 *bitsp = bits; 2201 2202 return (0); 2203 } 2204 2205 static int 2206 sd_setcache(struct sd_softc *sd, int bits) 2207 { 2208 struct scsipi_periph *periph = sd->sc_periph; 2209 struct sd_mode_sense_data scsipi_sense; 2210 int error; 2211 uint8_t oflags, byte2 = 0; 2212 int big; 2213 union scsi_disk_pages *pages; 2214 2215 if (periph->periph_version < 2) 2216 return (EOPNOTSUPP); 2217 2218 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2219 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2220 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2221 if (error) 2222 return (error); 2223 2224 if (big) 2225 pages = (void *)(&scsipi_sense.header.big + 1); 2226 else 2227 pages = (void *)(&scsipi_sense.header.small + 1); 2228 2229 oflags = pages->caching_params.flags; 2230 2231 if (bits & DKCACHE_READ) 2232 pages->caching_params.flags &= ~CACHING_RCD; 2233 else 2234 pages->caching_params.flags |= CACHING_RCD; 2235 2236 if (bits & DKCACHE_WRITE) 2237 pages->caching_params.flags |= CACHING_WCE; 2238 else 2239 pages->caching_params.flags &= ~CACHING_WCE; 2240 2241 if (oflags == pages->caching_params.flags) 2242 return (0); 2243 2244 pages->caching_params.pg_code &= PGCODE_MASK; 2245 2246 if (bits & DKCACHE_SAVE) 2247 byte2 |= SMS_SP; 2248 2249 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2250 sizeof(struct scsi_mode_page_header) + 2251 pages->caching_params.pg_length, 0, big)); 2252 } 2253 2254 static void 2255 sd_set_properties(struct sd_softc *sd) 2256 { 2257 prop_dictionary_t disk_info, odisk_info, geom; 2258 2259 disk_info = prop_dictionary_create(); 2260 2261 geom = prop_dictionary_create(); 2262 2263 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2264 sd->params.disksize); 2265 2266 prop_dictionary_set_uint32(geom, "sector-size", 2267 sd->params.blksize); 2268 2269 prop_dictionary_set_uint16(geom, "sectors-per-track", 2270 sd->params.sectors); 2271 2272 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2273 sd->params.heads); 2274 2275 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2276 sd->params.cyls); 2277 2278 prop_dictionary_set(disk_info, "geometry", geom); 2279 prop_object_release(geom); 2280 2281 prop_dictionary_set(device_properties(&sd->sc_dev), 2282 "disk-info", disk_info); 2283 2284 /* 2285 * Don't release disk_info here; we keep a reference to it. 2286 * disk_detach() will release it when we go away. 2287 */ 2288 2289 odisk_info = sd->sc_dk.dk_info; 2290 sd->sc_dk.dk_info = disk_info; 2291 if (odisk_info) 2292 prop_object_release(odisk_info); 2293 } 2294