1 /* $NetBSD: sd.c,v 1.271 2008/02/29 06:42:35 dyoung 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 1.271 2008/02/29 06:42:35 dyoung 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, sd->sc_dev.dv_xname, &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("%s: ", sd->sc_dev.dv_xname); 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("%s: WARNING: unable to establish shutdown hook\n", 321 sd->sc_dev.dv_xname); 322 323 if (!pmf_device_register(self, sd_suspend, NULL)) 324 aprint_error_dev(self, "couldn't establish power handler\n"); 325 326 #if NRND > 0 327 /* 328 * attach the device into the random source list 329 */ 330 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 331 RND_TYPE_DISK, 0); 332 #endif 333 334 /* Discover wedges on this disk. */ 335 dkwedge_discover(&sd->sc_dk); 336 337 sd_set_properties(sd); 338 } 339 340 static int 341 sdactivate(struct device *self, enum devact act) 342 { 343 int rv = 0; 344 345 switch (act) { 346 case DVACT_ACTIVATE: 347 rv = EOPNOTSUPP; 348 break; 349 350 case DVACT_DEACTIVATE: 351 /* 352 * Nothing to do; we key off the device's DVF_ACTIVE. 353 */ 354 break; 355 } 356 return (rv); 357 } 358 359 static int 360 sddetach(struct device *self, int flags) 361 { 362 struct sd_softc *sd = device_private(self); 363 int s, bmaj, cmaj, i, mn; 364 365 /* locate the major number */ 366 bmaj = bdevsw_lookup_major(&sd_bdevsw); 367 cmaj = cdevsw_lookup_major(&sd_cdevsw); 368 369 /* Nuke the vnodes for any open instances */ 370 for (i = 0; i < MAXPARTITIONS; i++) { 371 mn = SDMINOR(device_unit(self), i); 372 vdevgone(bmaj, mn, mn, VBLK); 373 vdevgone(cmaj, mn, mn, VCHR); 374 } 375 376 /* kill any pending restart */ 377 callout_stop(&sd->sc_callout); 378 379 /* Delete all of our wedges. */ 380 dkwedge_delall(&sd->sc_dk); 381 382 s = splbio(); 383 384 /* Kill off any queued buffers. */ 385 bufq_drain(sd->buf_queue); 386 387 bufq_free(sd->buf_queue); 388 389 /* Kill off any pending commands. */ 390 scsipi_kill_pending(sd->sc_periph); 391 392 splx(s); 393 394 /* Detach from the disk list. */ 395 disk_detach(&sd->sc_dk); 396 disk_destroy(&sd->sc_dk); 397 398 pmf_device_deregister(self); 399 shutdownhook_disestablish(sd->sc_sdhook); 400 401 #if NRND > 0 402 /* Unhook the entropy source. */ 403 rnd_detach_source(&sd->rnd_source); 404 #endif 405 406 return (0); 407 } 408 409 /* 410 * open the device. Make sure the partition info is a up-to-date as can be. 411 */ 412 static int 413 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 414 { 415 struct sd_softc *sd; 416 struct scsipi_periph *periph; 417 struct scsipi_adapter *adapt; 418 int unit, part; 419 int error; 420 421 unit = SDUNIT(dev); 422 if (unit >= sd_cd.cd_ndevs) 423 return (ENXIO); 424 sd = sd_cd.cd_devs[unit]; 425 if (sd == NULL) 426 return (ENXIO); 427 428 if (!device_is_active(&sd->sc_dev)) 429 return (ENODEV); 430 431 part = SDPART(dev); 432 433 mutex_enter(&sd->sc_dk.dk_openlock); 434 435 /* 436 * If there are wedges, and this is not RAW_PART, then we 437 * need to fail. 438 */ 439 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 440 error = EBUSY; 441 goto bad1; 442 } 443 444 periph = sd->sc_periph; 445 adapt = periph->periph_channel->chan_adapter; 446 447 SC_DEBUG(periph, SCSIPI_DB1, 448 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 449 sd_cd.cd_ndevs, part)); 450 451 /* 452 * If this is the first open of this device, add a reference 453 * to the adapter. 454 */ 455 if (sd->sc_dk.dk_openmask == 0 && 456 (error = scsipi_adapter_addref(adapt)) != 0) 457 goto bad1; 458 459 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 460 /* 461 * If any partition is open, but the disk has been invalidated, 462 * disallow further opens of non-raw partition 463 */ 464 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 465 (part != RAW_PART || fmt != S_IFCHR)) { 466 error = EIO; 467 goto bad2; 468 } 469 } else { 470 int silent; 471 472 if (part == RAW_PART && fmt == S_IFCHR) 473 silent = XS_CTL_SILENT; 474 else 475 silent = 0; 476 477 /* Check that it is still responding and ok. */ 478 error = scsipi_test_unit_ready(periph, 479 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 480 silent); 481 482 /* 483 * Start the pack spinning if necessary. Always allow the 484 * raw parition to be opened, for raw IOCTLs. Data transfers 485 * will check for SDEV_MEDIA_LOADED. 486 */ 487 if (error == EIO) { 488 int error2; 489 490 error2 = scsipi_start(periph, SSS_START, silent); 491 switch (error2) { 492 case 0: 493 error = 0; 494 break; 495 case EIO: 496 case EINVAL: 497 break; 498 default: 499 error = error2; 500 break; 501 } 502 } 503 if (error) { 504 if (silent) 505 goto out; 506 goto bad2; 507 } 508 509 periph->periph_flags |= PERIPH_OPEN; 510 511 if (periph->periph_flags & PERIPH_REMOVABLE) { 512 /* Lock the pack in. */ 513 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 514 XS_CTL_IGNORE_ILLEGAL_REQUEST | 515 XS_CTL_IGNORE_MEDIA_CHANGE | 516 XS_CTL_SILENT); 517 if (error) 518 goto bad3; 519 } 520 521 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 522 int param_error; 523 periph->periph_flags |= PERIPH_MEDIA_LOADED; 524 525 /* 526 * Load the physical device parameters. 527 * 528 * Note that if media is present but unformatted, 529 * we allow the open (so that it can be formatted!). 530 * The drive should refuse real I/O, if the media is 531 * unformatted. 532 */ 533 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 534 == SDGP_RESULT_OFFLINE) { 535 error = ENXIO; 536 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 537 goto bad3; 538 } 539 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 540 541 /* Load the partition info if not already loaded. */ 542 if (param_error == 0) { 543 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 544 error = EIO; 545 goto bad3; 546 } 547 SC_DEBUG(periph, SCSIPI_DB3, 548 ("Disklabel loaded ")); 549 } 550 } 551 } 552 553 /* Check that the partition exists. */ 554 if (part != RAW_PART && 555 (part >= sd->sc_dk.dk_label->d_npartitions || 556 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 557 error = ENXIO; 558 goto bad3; 559 } 560 561 out: /* Insure only one open at a time. */ 562 switch (fmt) { 563 case S_IFCHR: 564 sd->sc_dk.dk_copenmask |= (1 << part); 565 break; 566 case S_IFBLK: 567 sd->sc_dk.dk_bopenmask |= (1 << part); 568 break; 569 } 570 sd->sc_dk.dk_openmask = 571 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 572 573 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 574 mutex_exit(&sd->sc_dk.dk_openlock); 575 return (0); 576 577 bad3: 578 if (sd->sc_dk.dk_openmask == 0) { 579 if (periph->periph_flags & PERIPH_REMOVABLE) 580 scsipi_prevent(periph, SPAMR_ALLOW, 581 XS_CTL_IGNORE_ILLEGAL_REQUEST | 582 XS_CTL_IGNORE_MEDIA_CHANGE | 583 XS_CTL_SILENT); 584 periph->periph_flags &= ~PERIPH_OPEN; 585 } 586 587 bad2: 588 if (sd->sc_dk.dk_openmask == 0) 589 scsipi_adapter_delref(adapt); 590 591 bad1: 592 mutex_exit(&sd->sc_dk.dk_openlock); 593 return (error); 594 } 595 596 /* 597 * close the device.. only called if we are the LAST occurence of an open 598 * device. Convenient now but usually a pain. 599 */ 600 static int 601 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 602 { 603 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 604 struct scsipi_periph *periph = sd->sc_periph; 605 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 606 int part = SDPART(dev); 607 608 mutex_enter(&sd->sc_dk.dk_openlock); 609 switch (fmt) { 610 case S_IFCHR: 611 sd->sc_dk.dk_copenmask &= ~(1 << part); 612 break; 613 case S_IFBLK: 614 sd->sc_dk.dk_bopenmask &= ~(1 << part); 615 break; 616 } 617 sd->sc_dk.dk_openmask = 618 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 619 620 if (sd->sc_dk.dk_openmask == 0) { 621 /* 622 * If the disk cache needs flushing, and the disk supports 623 * it, do it now. 624 */ 625 if ((sd->flags & SDF_DIRTY) != 0) { 626 if (sd_flush(sd, 0)) { 627 printf("%s: cache synchronization failed\n", 628 sd->sc_dev.dv_xname); 629 sd->flags &= ~SDF_FLUSHING; 630 } else 631 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 632 } 633 634 scsipi_wait_drain(periph); 635 636 if (periph->periph_flags & PERIPH_REMOVABLE) 637 scsipi_prevent(periph, SPAMR_ALLOW, 638 XS_CTL_IGNORE_ILLEGAL_REQUEST | 639 XS_CTL_IGNORE_NOT_READY | 640 XS_CTL_SILENT); 641 periph->periph_flags &= ~PERIPH_OPEN; 642 643 scsipi_wait_drain(periph); 644 645 scsipi_adapter_delref(adapt); 646 } 647 648 mutex_exit(&sd->sc_dk.dk_openlock); 649 return (0); 650 } 651 652 /* 653 * Actually translate the requested transfer into one the physical driver 654 * can understand. The transfer is described by a buf and will include 655 * only one physical transfer. 656 */ 657 static void 658 sdstrategy(struct buf *bp) 659 { 660 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 661 struct scsipi_periph *periph = sd->sc_periph; 662 struct disklabel *lp; 663 daddr_t blkno; 664 int s; 665 bool sector_aligned; 666 667 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 668 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 669 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 670 /* 671 * If the device has been made invalid, error out 672 */ 673 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 674 !device_is_active(&sd->sc_dev)) { 675 if (periph->periph_flags & PERIPH_OPEN) 676 bp->b_error = EIO; 677 else 678 bp->b_error = ENODEV; 679 goto done; 680 } 681 682 lp = sd->sc_dk.dk_label; 683 684 /* 685 * The transfer must be a whole number of blocks, offset must not be 686 * negative. 687 */ 688 if (lp->d_secsize == DEV_BSIZE) { 689 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 690 } else { 691 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 692 } 693 if (!sector_aligned || bp->b_blkno < 0) { 694 bp->b_error = EINVAL; 695 goto done; 696 } 697 /* 698 * If it's a null transfer, return immediatly 699 */ 700 if (bp->b_bcount == 0) 701 goto done; 702 703 /* 704 * Do bounds checking, adjust transfer. if error, process. 705 * If end of partition, just return. 706 */ 707 if (SDPART(bp->b_dev) == RAW_PART) { 708 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 709 sd->params.disksize512) <= 0) 710 goto done; 711 } else { 712 if (bounds_check_with_label(&sd->sc_dk, bp, 713 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 714 goto done; 715 } 716 717 /* 718 * Now convert the block number to absolute and put it in 719 * terms of the device's logical block size. 720 */ 721 if (lp->d_secsize == DEV_BSIZE) 722 blkno = bp->b_blkno; 723 else if (lp->d_secsize > DEV_BSIZE) 724 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 725 else 726 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 727 728 if (SDPART(bp->b_dev) != RAW_PART) 729 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 730 731 bp->b_rawblkno = blkno; 732 733 s = splbio(); 734 735 /* 736 * Place it in the queue of disk activities for this disk. 737 * 738 * XXX Only do disksort() if the current operating mode does not 739 * XXX include tagged queueing. 740 */ 741 BUFQ_PUT(sd->buf_queue, bp); 742 743 /* 744 * Tell the device to get going on the transfer if it's 745 * not doing anything, otherwise just wait for completion 746 */ 747 sdstart(sd->sc_periph); 748 749 splx(s); 750 return; 751 752 done: 753 /* 754 * Correctly set the buf to indicate a completed xfer 755 */ 756 bp->b_resid = bp->b_bcount; 757 biodone(bp); 758 } 759 760 /* 761 * sdstart looks to see if there is a buf waiting for the device 762 * and that the device is not already busy. If both are true, 763 * It dequeues the buf and creates a scsi command to perform the 764 * transfer in the buf. The transfer request will call scsipi_done 765 * on completion, which will in turn call this routine again 766 * so that the next queued transfer is performed. 767 * The bufs are queued by the strategy routine (sdstrategy) 768 * 769 * This routine is also called after other non-queued requests 770 * have been made of the scsi driver, to ensure that the queue 771 * continues to be drained. 772 * 773 * must be called at the correct (highish) spl level 774 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 775 */ 776 static void 777 sdstart(struct scsipi_periph *periph) 778 { 779 struct sd_softc *sd = (void *)periph->periph_dev; 780 struct disklabel *lp = sd->sc_dk.dk_label; 781 struct buf *bp = 0; 782 struct scsipi_rw_16 cmd16; 783 struct scsipi_rw_10 cmd_big; 784 struct scsi_rw_6 cmd_small; 785 struct scsipi_generic *cmdp; 786 struct scsipi_xfer *xs; 787 int nblks, cmdlen, error, flags; 788 789 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 790 /* 791 * Check if the device has room for another command 792 */ 793 while (periph->periph_active < periph->periph_openings) { 794 /* 795 * there is excess capacity, but a special waits 796 * It'll need the adapter as soon as we clear out of the 797 * way and let it run (user level wait). 798 */ 799 if (periph->periph_flags & PERIPH_WAITING) { 800 periph->periph_flags &= ~PERIPH_WAITING; 801 wakeup((void *)periph); 802 return; 803 } 804 805 /* 806 * If the device has become invalid, abort all the 807 * reads and writes until all files have been closed and 808 * re-opened 809 */ 810 if (__predict_false( 811 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 812 if ((bp = BUFQ_GET(sd->buf_queue)) != NULL) { 813 bp->b_error = EIO; 814 bp->b_resid = bp->b_bcount; 815 biodone(bp); 816 continue; 817 } else { 818 return; 819 } 820 } 821 822 /* 823 * See if there is a buf with work for us to do.. 824 */ 825 if ((bp = BUFQ_PEEK(sd->buf_queue)) == NULL) 826 return; 827 828 /* 829 * We have a buf, now we should make a command. 830 */ 831 832 if (lp->d_secsize == DEV_BSIZE) 833 nblks = bp->b_bcount >> DEV_BSHIFT; 834 else 835 nblks = howmany(bp->b_bcount, lp->d_secsize); 836 837 /* 838 * Fill out the scsi command. Use the smallest CDB possible 839 * (6-byte, 10-byte, or 16-byte). 840 */ 841 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 842 ((nblks & 0xff) == nblks) && 843 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 844 /* 6-byte CDB */ 845 memset(&cmd_small, 0, sizeof(cmd_small)); 846 cmd_small.opcode = (bp->b_flags & B_READ) ? 847 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 848 _lto3b(bp->b_rawblkno, cmd_small.addr); 849 cmd_small.length = nblks & 0xff; 850 cmdlen = sizeof(cmd_small); 851 cmdp = (struct scsipi_generic *)&cmd_small; 852 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 853 /* 10-byte CDB */ 854 memset(&cmd_big, 0, sizeof(cmd_big)); 855 cmd_big.opcode = (bp->b_flags & B_READ) ? 856 READ_10 : WRITE_10; 857 _lto4b(bp->b_rawblkno, cmd_big.addr); 858 _lto2b(nblks, cmd_big.length); 859 cmdlen = sizeof(cmd_big); 860 cmdp = (struct scsipi_generic *)&cmd_big; 861 } else { 862 /* 16-byte CDB */ 863 memset(&cmd16, 0, sizeof(cmd16)); 864 cmd16.opcode = (bp->b_flags & B_READ) ? 865 READ_16 : WRITE_16; 866 _lto8b(bp->b_rawblkno, cmd16.addr); 867 _lto4b(nblks, cmd16.length); 868 cmdlen = sizeof(cmd16); 869 cmdp = (struct scsipi_generic *)&cmd16; 870 } 871 872 /* Instrumentation. */ 873 disk_busy(&sd->sc_dk); 874 875 /* 876 * Mark the disk dirty so that the cache will be 877 * flushed on close. 878 */ 879 if ((bp->b_flags & B_READ) == 0) 880 sd->flags |= SDF_DIRTY; 881 882 /* 883 * Figure out what flags to use. 884 */ 885 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 886 if (bp->b_flags & B_READ) 887 flags |= XS_CTL_DATA_IN; 888 else 889 flags |= XS_CTL_DATA_OUT; 890 891 /* 892 * Call the routine that chats with the adapter. 893 * Note: we cannot sleep as we may be an interrupt 894 */ 895 xs = scsipi_make_xs(periph, cmdp, cmdlen, 896 (u_char *)bp->b_data, bp->b_bcount, 897 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 898 if (__predict_false(xs == NULL)) { 899 /* 900 * out of memory. Keep this buffer in the queue, and 901 * retry later. 902 */ 903 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 904 periph); 905 return; 906 } 907 /* 908 * need to dequeue the buffer before queuing the command, 909 * because cdstart may be called recursively from the 910 * HBA driver 911 */ 912 #ifdef DIAGNOSTIC 913 if (BUFQ_GET(sd->buf_queue) != bp) 914 panic("sdstart(): dequeued wrong buf"); 915 #else 916 BUFQ_GET(sd->buf_queue); 917 #endif 918 error = scsipi_execute_xs(xs); 919 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 920 KASSERT(error == 0); 921 } 922 } 923 924 static void 925 sdrestart(void *v) 926 { 927 int s = splbio(); 928 sdstart((struct scsipi_periph *)v); 929 splx(s); 930 } 931 932 static void 933 sddone(struct scsipi_xfer *xs, int error) 934 { 935 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 936 struct buf *bp = xs->bp; 937 938 if (sd->flags & SDF_FLUSHING) { 939 /* Flush completed, no longer dirty. */ 940 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 941 } 942 943 if (bp) { 944 bp->b_error = error; 945 bp->b_resid = xs->resid; 946 if (error) { 947 /* on a read/write error bp->b_resid is zero, so fix */ 948 bp->b_resid = bp->b_bcount; 949 } 950 951 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 952 (bp->b_flags & B_READ)); 953 #if NRND > 0 954 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 955 #endif 956 957 biodone(bp); 958 } 959 } 960 961 static void 962 sdminphys(struct buf *bp) 963 { 964 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 965 long xmax; 966 967 /* 968 * If the device is ancient, we want to make sure that 969 * the transfer fits into a 6-byte cdb. 970 * 971 * XXX Note that the SCSI-I spec says that 256-block transfers 972 * are allowed in a 6-byte read/write, and are specified 973 * by settng the "length" to 0. However, we're conservative 974 * here, allowing only 255-block transfers in case an 975 * ancient device gets confused by length == 0. A length of 0 976 * in a 10-byte read/write actually means 0 blocks. 977 */ 978 if ((sd->flags & SDF_ANCIENT) && 979 ((sd->sc_periph->periph_flags & 980 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 981 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 982 983 if (bp->b_bcount > xmax) 984 bp->b_bcount = xmax; 985 } 986 987 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 988 } 989 990 static int 991 sdread(dev_t dev, struct uio *uio, int ioflag) 992 { 993 994 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 995 } 996 997 static int 998 sdwrite(dev_t dev, struct uio *uio, int ioflag) 999 { 1000 1001 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1002 } 1003 1004 /* 1005 * Perform special action on behalf of the user 1006 * Knows about the internals of this device 1007 */ 1008 static int 1009 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1010 { 1011 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1012 struct scsipi_periph *periph = sd->sc_periph; 1013 int part = SDPART(dev); 1014 int error = 0; 1015 #ifdef __HAVE_OLD_DISKLABEL 1016 struct disklabel *newlabel = NULL; 1017 #endif 1018 1019 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1020 1021 /* 1022 * If the device is not valid, some IOCTLs can still be 1023 * handled on the raw partition. Check this here. 1024 */ 1025 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1026 switch (cmd) { 1027 case DIOCKLABEL: 1028 case DIOCWLABEL: 1029 case DIOCLOCK: 1030 case DIOCEJECT: 1031 case ODIOCEJECT: 1032 case DIOCGCACHE: 1033 case DIOCSCACHE: 1034 case SCIOCIDENTIFY: 1035 case OSCIOCIDENTIFY: 1036 case SCIOCCOMMAND: 1037 case SCIOCDEBUG: 1038 if (part == RAW_PART) 1039 break; 1040 /* FALLTHROUGH */ 1041 default: 1042 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1043 return (ENODEV); 1044 else 1045 return (EIO); 1046 } 1047 } 1048 1049 switch (cmd) { 1050 case DIOCGDINFO: 1051 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1052 return (0); 1053 1054 #ifdef __HAVE_OLD_DISKLABEL 1055 case ODIOCGDINFO: 1056 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1057 if (newlabel == NULL) 1058 return EIO; 1059 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1060 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1061 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1062 else 1063 error = ENOTTY; 1064 free(newlabel, M_TEMP); 1065 return error; 1066 #endif 1067 1068 case DIOCGPART: 1069 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1070 ((struct partinfo *)addr)->part = 1071 &sd->sc_dk.dk_label->d_partitions[part]; 1072 return (0); 1073 1074 case DIOCWDINFO: 1075 case DIOCSDINFO: 1076 #ifdef __HAVE_OLD_DISKLABEL 1077 case ODIOCWDINFO: 1078 case ODIOCSDINFO: 1079 #endif 1080 { 1081 struct disklabel *lp; 1082 1083 if ((flag & FWRITE) == 0) 1084 return (EBADF); 1085 1086 #ifdef __HAVE_OLD_DISKLABEL 1087 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1088 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1089 if (newlabel == NULL) 1090 return EIO; 1091 memset(newlabel, 0, sizeof newlabel); 1092 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1093 lp = newlabel; 1094 } else 1095 #endif 1096 lp = (struct disklabel *)addr; 1097 1098 mutex_enter(&sd->sc_dk.dk_openlock); 1099 sd->flags |= SDF_LABELLING; 1100 1101 error = setdisklabel(sd->sc_dk.dk_label, 1102 lp, /*sd->sc_dk.dk_openmask : */0, 1103 sd->sc_dk.dk_cpulabel); 1104 if (error == 0) { 1105 if (cmd == DIOCWDINFO 1106 #ifdef __HAVE_OLD_DISKLABEL 1107 || cmd == ODIOCWDINFO 1108 #endif 1109 ) 1110 error = writedisklabel(SDLABELDEV(dev), 1111 sdstrategy, sd->sc_dk.dk_label, 1112 sd->sc_dk.dk_cpulabel); 1113 } 1114 1115 sd->flags &= ~SDF_LABELLING; 1116 mutex_exit(&sd->sc_dk.dk_openlock); 1117 #ifdef __HAVE_OLD_DISKLABEL 1118 if (newlabel != NULL) 1119 free(newlabel, M_TEMP); 1120 #endif 1121 return (error); 1122 } 1123 1124 case DIOCKLABEL: 1125 if (*(int *)addr) 1126 periph->periph_flags |= PERIPH_KEEP_LABEL; 1127 else 1128 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1129 return (0); 1130 1131 case DIOCWLABEL: 1132 if ((flag & FWRITE) == 0) 1133 return (EBADF); 1134 if (*(int *)addr) 1135 sd->flags |= SDF_WLABEL; 1136 else 1137 sd->flags &= ~SDF_WLABEL; 1138 return (0); 1139 1140 case DIOCLOCK: 1141 if (periph->periph_flags & PERIPH_REMOVABLE) 1142 return (scsipi_prevent(periph, 1143 (*(int *)addr) ? 1144 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1145 else 1146 return (ENOTTY); 1147 1148 case DIOCEJECT: 1149 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1150 return (ENOTTY); 1151 if (*(int *)addr == 0) { 1152 /* 1153 * Don't force eject: check that we are the only 1154 * partition open. If so, unlock it. 1155 */ 1156 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1157 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1158 sd->sc_dk.dk_openmask) { 1159 error = scsipi_prevent(periph, SPAMR_ALLOW, 1160 XS_CTL_IGNORE_NOT_READY); 1161 if (error) 1162 return (error); 1163 } else { 1164 return (EBUSY); 1165 } 1166 } 1167 /* FALLTHROUGH */ 1168 case ODIOCEJECT: 1169 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1170 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1171 1172 case DIOCGDEFLABEL: 1173 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1174 return (0); 1175 1176 #ifdef __HAVE_OLD_DISKLABEL 1177 case ODIOCGDEFLABEL: 1178 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1179 if (newlabel == NULL) 1180 return EIO; 1181 sdgetdefaultlabel(sd, newlabel); 1182 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1183 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1184 else 1185 error = ENOTTY; 1186 free(newlabel, M_TEMP); 1187 return error; 1188 #endif 1189 1190 case DIOCGCACHE: 1191 return (sd_getcache(sd, (int *) addr)); 1192 1193 case DIOCSCACHE: 1194 if ((flag & FWRITE) == 0) 1195 return (EBADF); 1196 return (sd_setcache(sd, *(int *) addr)); 1197 1198 case DIOCCACHESYNC: 1199 /* 1200 * XXX Do we really need to care about having a writable 1201 * file descriptor here? 1202 */ 1203 if ((flag & FWRITE) == 0) 1204 return (EBADF); 1205 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1206 error = sd_flush(sd, 0); 1207 if (error) 1208 sd->flags &= ~SDF_FLUSHING; 1209 else 1210 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1211 } else 1212 error = 0; 1213 return (error); 1214 1215 case DIOCAWEDGE: 1216 { 1217 struct dkwedge_info *dkw = (void *) addr; 1218 1219 if ((flag & FWRITE) == 0) 1220 return (EBADF); 1221 1222 /* If the ioctl happens here, the parent is us. */ 1223 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1224 return (dkwedge_add(dkw)); 1225 } 1226 1227 case DIOCDWEDGE: 1228 { 1229 struct dkwedge_info *dkw = (void *) addr; 1230 1231 if ((flag & FWRITE) == 0) 1232 return (EBADF); 1233 1234 /* If the ioctl happens here, the parent is us. */ 1235 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1236 return (dkwedge_del(dkw)); 1237 } 1238 1239 case DIOCLWEDGES: 1240 { 1241 struct dkwedge_list *dkwl = (void *) addr; 1242 1243 return (dkwedge_list(&sd->sc_dk, dkwl, l)); 1244 } 1245 1246 default: 1247 if (part != RAW_PART) 1248 return (ENOTTY); 1249 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1250 } 1251 1252 #ifdef DIAGNOSTIC 1253 panic("sdioctl: impossible"); 1254 #endif 1255 } 1256 1257 static void 1258 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1259 { 1260 1261 memset(lp, 0, sizeof(struct disklabel)); 1262 1263 lp->d_secsize = sd->params.blksize; 1264 lp->d_ntracks = sd->params.heads; 1265 lp->d_nsectors = sd->params.sectors; 1266 lp->d_ncylinders = sd->params.cyls; 1267 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1268 1269 switch (scsipi_periph_bustype(sd->sc_periph)) { 1270 case SCSIPI_BUSTYPE_SCSI: 1271 lp->d_type = DTYPE_SCSI; 1272 break; 1273 case SCSIPI_BUSTYPE_ATAPI: 1274 lp->d_type = DTYPE_ATAPI; 1275 break; 1276 } 1277 /* 1278 * XXX 1279 * We could probe the mode pages to figure out what kind of disc it is. 1280 * Is this worthwhile? 1281 */ 1282 strncpy(lp->d_typename, sd->name, 16); 1283 strncpy(lp->d_packname, "fictitious", 16); 1284 lp->d_secperunit = sd->params.disksize; 1285 lp->d_rpm = sd->params.rot_rate; 1286 lp->d_interleave = 1; 1287 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1288 D_REMOVABLE : 0; 1289 1290 lp->d_partitions[RAW_PART].p_offset = 0; 1291 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1292 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1293 lp->d_npartitions = RAW_PART + 1; 1294 1295 lp->d_magic = DISKMAGIC; 1296 lp->d_magic2 = DISKMAGIC; 1297 lp->d_checksum = dkcksum(lp); 1298 } 1299 1300 1301 /* 1302 * Load the label information on the named device 1303 */ 1304 static int 1305 sdgetdisklabel(struct sd_softc *sd) 1306 { 1307 struct disklabel *lp = sd->sc_dk.dk_label; 1308 const char *errstring; 1309 1310 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1311 1312 sdgetdefaultlabel(sd, lp); 1313 1314 if (lp->d_secpercyl == 0) { 1315 lp->d_secpercyl = 100; 1316 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1317 } 1318 1319 /* 1320 * Call the generic disklabel extraction routine 1321 */ 1322 errstring = readdisklabel(MAKESDDEV(0, device_unit(&sd->sc_dev), 1323 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1324 if (errstring) { 1325 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1326 return EIO; 1327 } 1328 return 0; 1329 } 1330 1331 static void 1332 sd_shutdown(void *arg) 1333 { 1334 struct sd_softc *sd = arg; 1335 1336 /* 1337 * If the disk cache needs to be flushed, and the disk supports 1338 * it, flush it. We're cold at this point, so we poll for 1339 * completion. 1340 */ 1341 if ((sd->flags & SDF_DIRTY) != 0) { 1342 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1343 printf("%s: cache synchronization failed\n", 1344 sd->sc_dev.dv_xname); 1345 sd->flags &= ~SDF_FLUSHING; 1346 } else 1347 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1348 } 1349 } 1350 1351 static bool 1352 sd_suspend(device_t dv PMF_FN_ARGS) 1353 { 1354 struct sd_softc *sd = device_private(dv); 1355 1356 sd_shutdown(sd); /* XXX no need to poll */ 1357 return true; 1358 } 1359 1360 /* 1361 * Check Errors 1362 */ 1363 static int 1364 sd_interpret_sense(struct scsipi_xfer *xs) 1365 { 1366 struct scsipi_periph *periph = xs->xs_periph; 1367 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1368 struct sd_softc *sd = (void *)periph->periph_dev; 1369 int s, error, retval = EJUSTRETURN; 1370 1371 /* 1372 * If the periph is already recovering, just do the normal 1373 * error processing. 1374 */ 1375 if (periph->periph_flags & PERIPH_RECOVERING) 1376 return (retval); 1377 1378 /* 1379 * Ignore errors from accessing illegal fields (e.g. trying to 1380 * lock the door of a digicam, which doesn't have a door that 1381 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1382 */ 1383 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1384 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1385 sense->asc == 0x24 && 1386 sense->ascq == 0x00) { /* Illegal field in CDB */ 1387 if (!(xs->xs_control & XS_CTL_SILENT)) { 1388 scsipi_printaddr(periph); 1389 printf("no door lock\n"); 1390 } 1391 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1392 return (retval); 1393 } 1394 1395 1396 1397 /* 1398 * If the device is not open yet, let the generic code handle it. 1399 */ 1400 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1401 return (retval); 1402 1403 /* 1404 * If it isn't a extended or extended/deferred error, let 1405 * the generic code handle it. 1406 */ 1407 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1408 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1409 return (retval); 1410 1411 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1412 sense->asc == 0x4) { 1413 if (sense->ascq == 0x01) { 1414 /* 1415 * Unit In The Process Of Becoming Ready. 1416 */ 1417 printf("%s: waiting for pack to spin up...\n", 1418 sd->sc_dev.dv_xname); 1419 if (!callout_pending(&periph->periph_callout)) 1420 scsipi_periph_freeze(periph, 1); 1421 callout_reset(&periph->periph_callout, 1422 5 * hz, scsipi_periph_timed_thaw, periph); 1423 retval = ERESTART; 1424 } else if (sense->ascq == 0x02) { 1425 printf("%s: pack is stopped, restarting...\n", 1426 sd->sc_dev.dv_xname); 1427 s = splbio(); 1428 periph->periph_flags |= PERIPH_RECOVERING; 1429 splx(s); 1430 error = scsipi_start(periph, SSS_START, 1431 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1432 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1433 if (error) { 1434 printf("%s: unable to restart pack\n", 1435 sd->sc_dev.dv_xname); 1436 retval = error; 1437 } else 1438 retval = ERESTART; 1439 s = splbio(); 1440 periph->periph_flags &= ~PERIPH_RECOVERING; 1441 splx(s); 1442 } 1443 } 1444 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1445 sense->asc == 0x31 && 1446 sense->ascq == 0x00) { /* maybe for any asq ? */ 1447 /* Medium Format Corrupted */ 1448 retval = EFTYPE; 1449 } 1450 return (retval); 1451 } 1452 1453 1454 static int 1455 sdsize(dev_t dev) 1456 { 1457 struct sd_softc *sd; 1458 int part, unit, omask; 1459 int size; 1460 1461 unit = SDUNIT(dev); 1462 if (unit >= sd_cd.cd_ndevs) 1463 return (-1); 1464 sd = sd_cd.cd_devs[unit]; 1465 if (sd == NULL) 1466 return (-1); 1467 1468 if (!device_is_active(&sd->sc_dev)) 1469 return (-1); 1470 1471 part = SDPART(dev); 1472 omask = sd->sc_dk.dk_openmask & (1 << part); 1473 1474 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1475 return (-1); 1476 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1477 size = -1; 1478 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1479 size = -1; 1480 else 1481 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1482 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1483 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1484 return (-1); 1485 return (size); 1486 } 1487 1488 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1489 static struct scsipi_xfer sx; 1490 static int sddoingadump; 1491 1492 /* 1493 * dump all of physical memory into the partition specified, starting 1494 * at offset 'dumplo' into the partition. 1495 */ 1496 static int 1497 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1498 { 1499 struct sd_softc *sd; /* disk unit to do the I/O */ 1500 struct disklabel *lp; /* disk's disklabel */ 1501 int unit, part; 1502 int sectorsize; /* size of a disk sector */ 1503 int nsects; /* number of sectors in partition */ 1504 int sectoff; /* sector offset of partition */ 1505 int totwrt; /* total number of sectors left to write */ 1506 int nwrt; /* current number of sectors to write */ 1507 struct scsipi_rw_10 cmd; /* write command */ 1508 struct scsipi_xfer *xs; /* ... convenience */ 1509 struct scsipi_periph *periph; 1510 struct scsipi_channel *chan; 1511 1512 /* Check if recursive dump; if so, punt. */ 1513 if (sddoingadump) 1514 return (EFAULT); 1515 1516 /* Mark as active early. */ 1517 sddoingadump = 1; 1518 1519 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1520 part = SDPART(dev); 1521 1522 /* Check for acceptable drive number. */ 1523 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1524 return (ENXIO); 1525 1526 if (!device_is_active(&sd->sc_dev)) 1527 return (ENODEV); 1528 1529 periph = sd->sc_periph; 1530 chan = periph->periph_channel; 1531 1532 /* Make sure it was initialized. */ 1533 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1534 return (ENXIO); 1535 1536 /* Convert to disk sectors. Request must be a multiple of size. */ 1537 lp = sd->sc_dk.dk_label; 1538 sectorsize = lp->d_secsize; 1539 if ((size % sectorsize) != 0) 1540 return (EFAULT); 1541 totwrt = size / sectorsize; 1542 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1543 1544 nsects = lp->d_partitions[part].p_size; 1545 sectoff = lp->d_partitions[part].p_offset; 1546 1547 /* Check transfer bounds against partition size. */ 1548 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1549 return (EINVAL); 1550 1551 /* Offset block number to start of partition. */ 1552 blkno += sectoff; 1553 1554 xs = &sx; 1555 1556 while (totwrt > 0) { 1557 nwrt = totwrt; /* XXX */ 1558 #ifndef SD_DUMP_NOT_TRUSTED 1559 /* 1560 * Fill out the scsi command 1561 */ 1562 memset(&cmd, 0, sizeof(cmd)); 1563 cmd.opcode = WRITE_10; 1564 _lto4b(blkno, cmd.addr); 1565 _lto2b(nwrt, cmd.length); 1566 /* 1567 * Fill out the scsipi_xfer structure 1568 * Note: we cannot sleep as we may be an interrupt 1569 * don't use scsipi_command() as it may want to wait 1570 * for an xs. 1571 */ 1572 memset(xs, 0, sizeof(sx)); 1573 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1574 XS_CTL_DATA_OUT; 1575 xs->xs_status = 0; 1576 xs->xs_periph = periph; 1577 xs->xs_retries = SDRETRIES; 1578 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1579 xs->cmd = (struct scsipi_generic *)&cmd; 1580 xs->cmdlen = sizeof(cmd); 1581 xs->resid = nwrt * sectorsize; 1582 xs->error = XS_NOERROR; 1583 xs->bp = 0; 1584 xs->data = va; 1585 xs->datalen = nwrt * sectorsize; 1586 callout_init(&xs->xs_callout, 0); 1587 1588 /* 1589 * Pass all this info to the scsi driver. 1590 */ 1591 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1592 if ((xs->xs_status & XS_STS_DONE) == 0 || 1593 xs->error != XS_NOERROR) 1594 return (EIO); 1595 #else /* SD_DUMP_NOT_TRUSTED */ 1596 /* Let's just talk about this first... */ 1597 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1598 delay(500 * 1000); /* half a second */ 1599 #endif /* SD_DUMP_NOT_TRUSTED */ 1600 1601 /* update block count */ 1602 totwrt -= nwrt; 1603 blkno += nwrt; 1604 va = (char *)va + sectorsize * nwrt; 1605 } 1606 sddoingadump = 0; 1607 return (0); 1608 } 1609 1610 static int 1611 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1612 int page, int flags, int *big) 1613 { 1614 1615 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1616 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1617 *big = 1; 1618 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1619 size + sizeof(struct scsi_mode_parameter_header_10), 1620 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1621 } else { 1622 *big = 0; 1623 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1624 size + sizeof(struct scsi_mode_parameter_header_6), 1625 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1626 } 1627 } 1628 1629 static int 1630 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1631 int flags, int big) 1632 { 1633 1634 if (big) { 1635 struct scsi_mode_parameter_header_10 *header = sense; 1636 1637 _lto2b(0, header->data_length); 1638 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1639 size + sizeof(struct scsi_mode_parameter_header_10), 1640 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1641 } else { 1642 struct scsi_mode_parameter_header_6 *header = sense; 1643 1644 header->data_length = 0; 1645 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1646 size + sizeof(struct scsi_mode_parameter_header_6), 1647 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1648 } 1649 } 1650 1651 /* 1652 * sd_validate_blksize: 1653 * 1654 * Validate the block size. Print error if periph is specified, 1655 */ 1656 static int 1657 sd_validate_blksize(struct scsipi_periph *periph, int len) 1658 { 1659 1660 switch (len) { 1661 case 256: 1662 case 512: 1663 case 1024: 1664 case 2048: 1665 case 4096: 1666 return 1; 1667 } 1668 1669 if (periph) { 1670 scsipi_printaddr(periph); 1671 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1672 (len ^ (1 << (ffs(len) - 1))) ? 1673 "preposterous" : "unsupported", 1674 len, SD_DEFAULT_BLKSIZE); 1675 } 1676 1677 return 0; 1678 } 1679 1680 /* 1681 * sd_read_capacity: 1682 * 1683 * Find out from the device what its capacity is. 1684 */ 1685 static u_int64_t 1686 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1687 { 1688 union { 1689 struct scsipi_read_capacity_10 cmd; 1690 struct scsipi_read_capacity_16 cmd16; 1691 } cmd; 1692 union { 1693 struct scsipi_read_capacity_10_data data; 1694 struct scsipi_read_capacity_16_data data16; 1695 } *datap; 1696 uint64_t rv; 1697 1698 memset(&cmd, 0, sizeof(cmd)); 1699 cmd.cmd.opcode = READ_CAPACITY_10; 1700 1701 /* 1702 * Don't allocate data buffer on stack; 1703 * The lower driver layer might use the same stack and 1704 * if it uses region which is in the same cacheline, 1705 * cache flush ops against the data buffer won't work properly. 1706 */ 1707 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1708 if (datap == NULL) 1709 return 0; 1710 1711 /* 1712 * If the command works, interpret the result as a 4 byte 1713 * number of blocks 1714 */ 1715 rv = 0; 1716 memset(datap, 0, sizeof(datap->data)); 1717 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1718 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1719 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1720 goto out; 1721 1722 if (_4btol(datap->data.addr) != 0xffffffff) { 1723 *blksize = _4btol(datap->data.length); 1724 rv = _4btol(datap->data.addr) + 1; 1725 goto out; 1726 } 1727 1728 /* 1729 * Device is larger than can be reflected by READ CAPACITY (10). 1730 * Try READ CAPACITY (16). 1731 */ 1732 1733 memset(&cmd, 0, sizeof(cmd)); 1734 cmd.cmd16.opcode = READ_CAPACITY_16; 1735 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1736 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1737 1738 memset(datap, 0, sizeof(datap->data16)); 1739 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1740 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1741 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1742 goto out; 1743 1744 *blksize = _4btol(datap->data16.length); 1745 rv = _8btol(datap->data16.addr) + 1; 1746 1747 out: 1748 free(datap, M_TEMP); 1749 return rv; 1750 } 1751 1752 static int 1753 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1754 { 1755 struct { 1756 struct scsi_mode_parameter_header_6 header; 1757 /* no block descriptor */ 1758 u_int8_t pg_code; /* page code (should be 6) */ 1759 u_int8_t pg_length; /* page length (should be 11) */ 1760 u_int8_t wcd; /* bit0: cache disable */ 1761 u_int8_t lbs[2]; /* logical block size */ 1762 u_int8_t size[5]; /* number of log. blocks */ 1763 u_int8_t pp; /* power/performance */ 1764 u_int8_t flags; 1765 u_int8_t resvd; 1766 } scsipi_sense; 1767 u_int64_t blocks; 1768 int error, blksize; 1769 1770 /* 1771 * sd_read_capacity (ie "read capacity") and mode sense page 6 1772 * give the same information. Do both for now, and check 1773 * for consistency. 1774 * XXX probably differs for removable media 1775 */ 1776 dp->blksize = SD_DEFAULT_BLKSIZE; 1777 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1778 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1779 1780 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1781 &scsipi_sense.header, sizeof(scsipi_sense), 1782 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1783 1784 if (error != 0) 1785 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1786 1787 dp->blksize = blksize; 1788 if (!sd_validate_blksize(NULL, dp->blksize)) 1789 dp->blksize = _2btol(scsipi_sense.lbs); 1790 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1791 dp->blksize = SD_DEFAULT_BLKSIZE; 1792 1793 /* 1794 * Create a pseudo-geometry. 1795 */ 1796 dp->heads = 64; 1797 dp->sectors = 32; 1798 dp->cyls = blocks / (dp->heads * dp->sectors); 1799 dp->disksize = _5btol(scsipi_sense.size); 1800 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1801 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1802 (unsigned long long)dp->disksize, 1803 (unsigned long long)blocks); 1804 dp->disksize = blocks; 1805 } 1806 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1807 1808 return (SDGP_RESULT_OK); 1809 } 1810 1811 /* 1812 * Get the scsi driver to send a full inquiry to the * device and use the 1813 * results to fill out the disk parameter structure. 1814 */ 1815 static int 1816 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1817 { 1818 u_int64_t blocks; 1819 int error, blksize; 1820 #if 0 1821 int i; 1822 u_int8_t *p; 1823 #endif 1824 1825 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1826 flags); 1827 if (blocks == 0) { 1828 struct scsipi_read_format_capacities cmd; 1829 struct { 1830 struct scsipi_capacity_list_header header; 1831 struct scsipi_capacity_descriptor desc; 1832 } __packed data; 1833 1834 memset(&cmd, 0, sizeof(cmd)); 1835 memset(&data, 0, sizeof(data)); 1836 cmd.opcode = READ_FORMAT_CAPACITIES; 1837 _lto2b(sizeof(data), cmd.length); 1838 1839 error = scsipi_command(sd->sc_periph, 1840 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1841 SDRETRIES, 20000, NULL, 1842 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1843 if (error == EFTYPE) { 1844 /* Medium Format Corrupted, handle as not formatted */ 1845 return (SDGP_RESULT_UNFORMATTED); 1846 } 1847 if (error || data.header.length == 0) 1848 return (SDGP_RESULT_OFFLINE); 1849 1850 #if 0 1851 printf("rfc: length=%d\n", data.header.length); 1852 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"); 1853 #endif 1854 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1855 case SCSIPI_CAP_DESC_CODE_RESERVED: 1856 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1857 break; 1858 1859 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1860 return (SDGP_RESULT_UNFORMATTED); 1861 1862 case SCSIPI_CAP_DESC_CODE_NONE: 1863 return (SDGP_RESULT_OFFLINE); 1864 } 1865 1866 dp->disksize = blocks = _4btol(data.desc.nblks); 1867 if (blocks == 0) 1868 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1869 1870 blksize = _3btol(data.desc.blklen); 1871 1872 } else if (!sd_validate_blksize(NULL, blksize)) { 1873 struct sd_mode_sense_data scsipi_sense; 1874 int big, bsize; 1875 struct scsi_general_block_descriptor *bdesc; 1876 1877 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1878 error = sd_mode_sense(sd, 0, &scsipi_sense, 1879 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1880 if (!error) { 1881 if (big) { 1882 bdesc = (void *)(&scsipi_sense.header.big + 1); 1883 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1884 } else { 1885 bdesc = (void *)(&scsipi_sense.header.small + 1); 1886 bsize = scsipi_sense.header.small.blk_desc_len; 1887 } 1888 1889 #if 0 1890 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1891 printf("page 0 bsize=%d\n", bsize); 1892 printf("page 0 ok\n"); 1893 #endif 1894 1895 if (bsize >= 8) { 1896 blksize = _3btol(bdesc->blklen); 1897 } 1898 } 1899 } 1900 1901 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1902 blksize = SD_DEFAULT_BLKSIZE; 1903 1904 dp->blksize = blksize; 1905 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1906 return (0); 1907 } 1908 1909 static int 1910 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1911 { 1912 struct sd_mode_sense_data scsipi_sense; 1913 int error; 1914 int big, byte2; 1915 size_t poffset; 1916 union scsi_disk_pages *pages; 1917 1918 byte2 = SMS_DBD; 1919 again: 1920 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1921 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1922 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1923 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1924 flags | XS_CTL_SILENT, &big); 1925 if (error) { 1926 if (byte2 == SMS_DBD) { 1927 /* No result; try once more with DBD off */ 1928 byte2 = 0; 1929 goto again; 1930 } 1931 return (error); 1932 } 1933 1934 if (big) { 1935 poffset = sizeof scsipi_sense.header.big; 1936 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1937 } else { 1938 poffset = sizeof scsipi_sense.header.small; 1939 poffset += scsipi_sense.header.small.blk_desc_len; 1940 } 1941 1942 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1943 return ERESTART; 1944 1945 pages = (void *)((u_long)&scsipi_sense + poffset); 1946 #if 0 1947 { 1948 size_t i; 1949 u_int8_t *p; 1950 1951 printf("page 4 sense:"); 1952 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1953 i--, p++) 1954 printf(" %02x", *p); 1955 printf("\n"); 1956 printf("page 4 pg_code=%d sense=%p/%p\n", 1957 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1958 } 1959 #endif 1960 1961 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1962 return (ERESTART); 1963 1964 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1965 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1966 _3btol(pages->rigid_geometry.ncyl), 1967 pages->rigid_geometry.nheads, 1968 _2btol(pages->rigid_geometry.st_cyl_wp), 1969 _2btol(pages->rigid_geometry.st_cyl_rwc), 1970 _2btol(pages->rigid_geometry.land_zone))); 1971 1972 /* 1973 * KLUDGE!! (for zone recorded disks) 1974 * give a number of sectors so that sec * trks * cyls 1975 * is <= disk_size 1976 * can lead to wasted space! THINK ABOUT THIS ! 1977 */ 1978 dp->heads = pages->rigid_geometry.nheads; 1979 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1980 if (dp->heads == 0 || dp->cyls == 0) 1981 return (ERESTART); 1982 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1983 1984 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1985 if (dp->rot_rate == 0) 1986 dp->rot_rate = 3600; 1987 1988 #if 0 1989 printf("page 4 ok\n"); 1990 #endif 1991 return (0); 1992 } 1993 1994 static int 1995 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1996 { 1997 struct sd_mode_sense_data scsipi_sense; 1998 int error; 1999 int big, byte2; 2000 size_t poffset; 2001 union scsi_disk_pages *pages; 2002 2003 byte2 = SMS_DBD; 2004 again: 2005 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2006 error = sd_mode_sense(sd, 0, &scsipi_sense, 2007 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2008 sizeof(scsipi_sense.pages.flex_geometry), 5, 2009 flags | XS_CTL_SILENT, &big); 2010 if (error) { 2011 if (byte2 == SMS_DBD) { 2012 /* No result; try once more with DBD off */ 2013 byte2 = 0; 2014 goto again; 2015 } 2016 return (error); 2017 } 2018 2019 if (big) { 2020 poffset = sizeof scsipi_sense.header.big; 2021 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2022 } else { 2023 poffset = sizeof scsipi_sense.header.small; 2024 poffset += scsipi_sense.header.small.blk_desc_len; 2025 } 2026 2027 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2028 return ERESTART; 2029 2030 pages = (void *)((u_long)&scsipi_sense + poffset); 2031 #if 0 2032 { 2033 size_t i; 2034 u_int8_t *p; 2035 2036 printf("page 5 sense:"); 2037 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2038 i--, p++) 2039 printf(" %02x", *p); 2040 printf("\n"); 2041 printf("page 5 pg_code=%d sense=%p/%p\n", 2042 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2043 } 2044 #endif 2045 2046 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2047 return (ERESTART); 2048 2049 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2050 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2051 _3btol(pages->flex_geometry.ncyl), 2052 pages->flex_geometry.nheads, 2053 pages->flex_geometry.ph_sec_tr, 2054 _2btol(pages->flex_geometry.bytes_s))); 2055 2056 dp->heads = pages->flex_geometry.nheads; 2057 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2058 dp->sectors = pages->flex_geometry.ph_sec_tr; 2059 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2060 return (ERESTART); 2061 2062 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2063 if (dp->rot_rate == 0) 2064 dp->rot_rate = 3600; 2065 2066 #if 0 2067 printf("page 5 ok\n"); 2068 #endif 2069 return (0); 2070 } 2071 2072 static int 2073 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2074 { 2075 int error; 2076 2077 /* 2078 * If offline, the SDEV_MEDIA_LOADED flag will be 2079 * cleared by the caller if necessary. 2080 */ 2081 if (sd->type == T_SIMPLE_DIRECT) { 2082 error = sd_get_simplifiedparms(sd, dp, flags); 2083 if (!error) 2084 disk_blocksize(&sd->sc_dk, dp->blksize); 2085 return (error); 2086 } 2087 2088 error = sd_get_capacity(sd, dp, flags); 2089 if (error) 2090 return (error); 2091 2092 disk_blocksize(&sd->sc_dk, dp->blksize); 2093 2094 if (sd->type == T_OPTICAL) 2095 goto page0; 2096 2097 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2098 if (!sd_get_parms_page5(sd, dp, flags) || 2099 !sd_get_parms_page4(sd, dp, flags)) 2100 return (SDGP_RESULT_OK); 2101 } else { 2102 if (!sd_get_parms_page4(sd, dp, flags) || 2103 !sd_get_parms_page5(sd, dp, flags)) 2104 return (SDGP_RESULT_OK); 2105 } 2106 2107 page0: 2108 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 2109 /* Try calling driver's method for figuring out geometry. */ 2110 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2111 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2112 (sd->sc_periph, dp, dp->disksize)) { 2113 /* 2114 * Use adaptec standard fictitious geometry 2115 * this depends on which controller (e.g. 1542C is 2116 * different. but we have to put SOMETHING here..) 2117 */ 2118 dp->heads = 64; 2119 dp->sectors = 32; 2120 dp->cyls = dp->disksize / (64 * 32); 2121 } 2122 dp->rot_rate = 3600; 2123 return (SDGP_RESULT_OK); 2124 } 2125 2126 static int 2127 sd_flush(struct sd_softc *sd, int flags) 2128 { 2129 struct scsipi_periph *periph = sd->sc_periph; 2130 struct scsi_synchronize_cache_10 cmd; 2131 2132 /* 2133 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2134 * We issue with address 0 length 0, which should be 2135 * interpreted by the device as "all remaining blocks 2136 * starting at address 0". We ignore ILLEGAL REQUEST 2137 * in the event that the command is not supported by 2138 * the device, and poll for completion so that we know 2139 * that the cache has actually been flushed. 2140 * 2141 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2142 * command, as indicated by our quirks flags. 2143 * 2144 * XXX What about older devices? 2145 */ 2146 if (periph->periph_version < 2 || 2147 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2148 return (0); 2149 2150 sd->flags |= SDF_FLUSHING; 2151 memset(&cmd, 0, sizeof(cmd)); 2152 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2153 2154 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2155 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2156 } 2157 2158 static int 2159 sd_getcache(struct sd_softc *sd, int *bitsp) 2160 { 2161 struct scsipi_periph *periph = sd->sc_periph; 2162 struct sd_mode_sense_data scsipi_sense; 2163 int error, bits = 0; 2164 int big; 2165 union scsi_disk_pages *pages; 2166 2167 if (periph->periph_version < 2) 2168 return (EOPNOTSUPP); 2169 2170 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2171 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2172 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2173 if (error) 2174 return (error); 2175 2176 if (big) 2177 pages = (void *)(&scsipi_sense.header.big + 1); 2178 else 2179 pages = (void *)(&scsipi_sense.header.small + 1); 2180 2181 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2182 bits |= DKCACHE_READ; 2183 if (pages->caching_params.flags & CACHING_WCE) 2184 bits |= DKCACHE_WRITE; 2185 if (pages->caching_params.pg_code & PGCODE_PS) 2186 bits |= DKCACHE_SAVE; 2187 2188 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2189 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2190 sizeof(scsipi_sense.pages.caching_params), 2191 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2192 if (error == 0) { 2193 if (big) 2194 pages = (void *)(&scsipi_sense.header.big + 1); 2195 else 2196 pages = (void *)(&scsipi_sense.header.small + 1); 2197 2198 if (pages->caching_params.flags & CACHING_RCD) 2199 bits |= DKCACHE_RCHANGE; 2200 if (pages->caching_params.flags & CACHING_WCE) 2201 bits |= DKCACHE_WCHANGE; 2202 } 2203 2204 *bitsp = bits; 2205 2206 return (0); 2207 } 2208 2209 static int 2210 sd_setcache(struct sd_softc *sd, int bits) 2211 { 2212 struct scsipi_periph *periph = sd->sc_periph; 2213 struct sd_mode_sense_data scsipi_sense; 2214 int error; 2215 uint8_t oflags, byte2 = 0; 2216 int big; 2217 union scsi_disk_pages *pages; 2218 2219 if (periph->periph_version < 2) 2220 return (EOPNOTSUPP); 2221 2222 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2223 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2224 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2225 if (error) 2226 return (error); 2227 2228 if (big) 2229 pages = (void *)(&scsipi_sense.header.big + 1); 2230 else 2231 pages = (void *)(&scsipi_sense.header.small + 1); 2232 2233 oflags = pages->caching_params.flags; 2234 2235 if (bits & DKCACHE_READ) 2236 pages->caching_params.flags &= ~CACHING_RCD; 2237 else 2238 pages->caching_params.flags |= CACHING_RCD; 2239 2240 if (bits & DKCACHE_WRITE) 2241 pages->caching_params.flags |= CACHING_WCE; 2242 else 2243 pages->caching_params.flags &= ~CACHING_WCE; 2244 2245 if (oflags == pages->caching_params.flags) 2246 return (0); 2247 2248 pages->caching_params.pg_code &= PGCODE_MASK; 2249 2250 if (bits & DKCACHE_SAVE) 2251 byte2 |= SMS_SP; 2252 2253 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2254 sizeof(struct scsi_mode_page_header) + 2255 pages->caching_params.pg_length, 0, big)); 2256 } 2257 2258 static void 2259 sd_set_properties(struct sd_softc *sd) 2260 { 2261 prop_dictionary_t disk_info, odisk_info, geom; 2262 2263 disk_info = prop_dictionary_create(); 2264 2265 geom = prop_dictionary_create(); 2266 2267 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2268 sd->params.disksize); 2269 2270 prop_dictionary_set_uint32(geom, "sector-size", 2271 sd->params.blksize); 2272 2273 prop_dictionary_set_uint16(geom, "sectors-per-track", 2274 sd->params.sectors); 2275 2276 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2277 sd->params.heads); 2278 2279 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2280 sd->params.cyls); 2281 2282 prop_dictionary_set(disk_info, "geometry", geom); 2283 prop_object_release(geom); 2284 2285 prop_dictionary_set(device_properties(&sd->sc_dev), 2286 "disk-info", disk_info); 2287 2288 /* 2289 * Don't release disk_info here; we keep a reference to it. 2290 * disk_detach() will release it when we go away. 2291 */ 2292 2293 odisk_info = sd->sc_dk.dk_info; 2294 sd->sc_dk.dk_info = disk_info; 2295 if (odisk_info) 2296 prop_object_release(odisk_info); 2297 } 2298