sd.c revision 1.240
1 /* $NetBSD: sd.c,v 1.240 2005/05/29 22:00:50 christos 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 (at) 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 (at) dialix.oz.au) Sept 1992 54 */ 55 56 #include <sys/cdefs.h> 57 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.240 2005/05/29 22:00:50 christos 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 #define SDUNIT(dev) DISKUNIT(dev) 94 #define SDPART(dev) DISKPART(dev) 95 #define SDMINOR(unit, part) DISKMINOR(unit, part) 96 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 97 98 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 99 100 static void sdminphys(struct buf *); 101 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 102 static void sdgetdisklabel(struct sd_softc *); 103 static void sdstart(struct scsipi_periph *); 104 static void sdrestart(void *); 105 static void sddone(struct scsipi_xfer *, int); 106 static void sd_shutdown(void *); 107 static int sd_interpret_sense(struct scsipi_xfer *); 108 109 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 110 int, int *); 111 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 112 int); 113 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 114 int); 115 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 116 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 117 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 118 int); 119 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 120 int); 121 122 static int sd_flush(struct sd_softc *, int); 123 static int sd_getcache(struct sd_softc *, int *); 124 static int sd_setcache(struct sd_softc *, int); 125 126 static int sdmatch(struct device *, struct cfdata *, void *); 127 static void sdattach(struct device *, struct device *, void *); 128 static int sdactivate(struct device *, enum devact); 129 static int sddetach(struct device *, int); 130 131 CFATTACH_DECL(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 132 sdactivate); 133 134 extern struct cfdriver sd_cd; 135 136 static const struct scsipi_inquiry_pattern sd_patterns[] = { 137 {T_DIRECT, T_FIXED, 138 "", "", ""}, 139 {T_DIRECT, T_REMOV, 140 "", "", ""}, 141 {T_OPTICAL, T_FIXED, 142 "", "", ""}, 143 {T_OPTICAL, T_REMOV, 144 "", "", ""}, 145 {T_SIMPLE_DIRECT, T_FIXED, 146 "", "", ""}, 147 {T_SIMPLE_DIRECT, T_REMOV, 148 "", "", ""}, 149 }; 150 151 static dev_type_open(sdopen); 152 static dev_type_close(sdclose); 153 static dev_type_read(sdread); 154 static dev_type_write(sdwrite); 155 static dev_type_ioctl(sdioctl); 156 static dev_type_strategy(sdstrategy); 157 static dev_type_dump(sddump); 158 static dev_type_size(sdsize); 159 160 const struct bdevsw sd_bdevsw = { 161 sdopen, sdclose, sdstrategy, sdioctl, sddump, sdsize, D_DISK 162 }; 163 164 const struct cdevsw sd_cdevsw = { 165 sdopen, sdclose, sdread, sdwrite, sdioctl, 166 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 167 }; 168 169 static struct dkdriver sddkdriver = { sdstrategy, sdminphys }; 170 171 static const struct scsipi_periphsw sd_switch = { 172 sd_interpret_sense, /* check our error handler first */ 173 sdstart, /* have a queue, served by this */ 174 NULL, /* have no async handler */ 175 sddone, /* deal with stats at interrupt time */ 176 }; 177 178 struct sd_mode_sense_data { 179 /* 180 * XXX 181 * We are not going to parse this as-is -- it just has to be large 182 * enough. 183 */ 184 union { 185 struct scsi_mode_parameter_header_6 small; 186 struct scsi_mode_parameter_header_10 big; 187 } header; 188 struct scsi_general_block_descriptor blk_desc; 189 union scsi_disk_pages pages; 190 }; 191 192 /* 193 * The routine called by the low level scsi routine when it discovers 194 * A device suitable for this driver 195 */ 196 static int 197 sdmatch(struct device *parent, struct cfdata *match, void *aux) 198 { 199 struct scsipibus_attach_args *sa = aux; 200 int priority; 201 202 (void)scsipi_inqmatch(&sa->sa_inqbuf, 203 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 204 sizeof(sd_patterns[0]), &priority); 205 206 return (priority); 207 } 208 209 /* 210 * Attach routine common to atapi & scsi. 211 */ 212 static void 213 sdattach(struct device *parent, struct device *self, void *aux) 214 { 215 struct sd_softc *sd = (void *)self; 216 struct scsipibus_attach_args *sa = aux; 217 struct scsipi_periph *periph = sa->sa_periph; 218 int error, result; 219 struct disk_parms *dp = &sd->params; 220 char pbuf[9]; 221 222 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 223 224 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 225 if (sd->type == T_SIMPLE_DIRECT) 226 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 227 228 if (scsipi_periph_bustype(sa->sa_periph) == SCSIPI_BUSTYPE_SCSI && 229 periph->periph_version == 0) 230 sd->flags |= SDF_ANCIENT; 231 232 bufq_alloc(&sd->buf_queue, 233 BUFQ_DISK_DEFAULT_STRAT()|BUFQ_SORT_RAWBLOCK); 234 235 callout_init(&sd->sc_callout); 236 237 /* 238 * Store information needed to contact our base driver 239 */ 240 sd->sc_periph = periph; 241 242 periph->periph_dev = &sd->sc_dev; 243 periph->periph_switch = &sd_switch; 244 245 /* 246 * Increase our openings to the maximum-per-periph 247 * supported by the adapter. This will either be 248 * clamped down or grown by the adapter if necessary. 249 */ 250 periph->periph_openings = 251 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 252 periph->periph_flags |= PERIPH_GROW_OPENINGS; 253 254 /* 255 * Initialize and attach the disk structure. 256 */ 257 sd->sc_dk.dk_driver = &sddkdriver; 258 sd->sc_dk.dk_name = sd->sc_dev.dv_xname; 259 disk_attach(&sd->sc_dk); 260 261 /* 262 * Use the subdriver to request information regarding the drive. 263 */ 264 aprint_naive("\n"); 265 aprint_normal("\n"); 266 267 error = scsipi_test_unit_ready(periph, 268 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 269 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 270 271 if (error) 272 result = SDGP_RESULT_OFFLINE; 273 else 274 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 275 aprint_normal("%s: ", sd->sc_dev.dv_xname); 276 switch (result) { 277 case SDGP_RESULT_OK: 278 format_bytes(pbuf, sizeof(pbuf), 279 (u_int64_t)dp->disksize * dp->blksize); 280 aprint_normal( 281 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 282 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 283 (unsigned long long)dp->disksize); 284 break; 285 286 case SDGP_RESULT_OFFLINE: 287 aprint_normal("drive offline"); 288 break; 289 290 case SDGP_RESULT_UNFORMATTED: 291 aprint_normal("unformatted media"); 292 break; 293 294 #ifdef DIAGNOSTIC 295 default: 296 panic("sdattach: unknown result from get_parms"); 297 break; 298 #endif 299 } 300 aprint_normal("\n"); 301 302 /* 303 * Establish a shutdown hook so that we can ensure that 304 * our data has actually made it onto the platter at 305 * shutdown time. Note that this relies on the fact 306 * that the shutdown hook code puts us at the head of 307 * the list (thus guaranteeing that our hook runs before 308 * our ancestors'). 309 */ 310 if ((sd->sc_sdhook = 311 shutdownhook_establish(sd_shutdown, sd)) == NULL) 312 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 313 sd->sc_dev.dv_xname); 314 315 #if NRND > 0 316 /* 317 * attach the device into the random source list 318 */ 319 rnd_attach_source(&sd->rnd_source, sd->sc_dev.dv_xname, 320 RND_TYPE_DISK, 0); 321 #endif 322 323 /* Discover wedges on this disk. */ 324 dkwedge_discover(&sd->sc_dk); 325 } 326 327 static int 328 sdactivate(struct device *self, enum devact act) 329 { 330 int rv = 0; 331 332 switch (act) { 333 case DVACT_ACTIVATE: 334 rv = EOPNOTSUPP; 335 break; 336 337 case DVACT_DEACTIVATE: 338 /* 339 * Nothing to do; we key off the device's DVF_ACTIVE. 340 */ 341 break; 342 } 343 return (rv); 344 } 345 346 static int 347 sddetach(struct device *self, int flags) 348 { 349 struct sd_softc *sd = (struct sd_softc *) self; 350 int s, bmaj, cmaj, i, mn; 351 352 /* locate the major number */ 353 bmaj = bdevsw_lookup_major(&sd_bdevsw); 354 cmaj = cdevsw_lookup_major(&sd_cdevsw); 355 356 /* Nuke the vnodes for any open instances */ 357 for (i = 0; i < MAXPARTITIONS; i++) { 358 mn = SDMINOR(self->dv_unit, i); 359 vdevgone(bmaj, mn, mn, VBLK); 360 vdevgone(cmaj, mn, mn, VCHR); 361 } 362 363 /* kill any pending restart */ 364 callout_stop(&sd->sc_callout); 365 366 /* Delete all of our wedges. */ 367 dkwedge_delall(&sd->sc_dk); 368 369 s = splbio(); 370 371 /* Kill off any queued buffers. */ 372 bufq_drain(&sd->buf_queue); 373 374 bufq_free(&sd->buf_queue); 375 376 /* Kill off any pending commands. */ 377 scsipi_kill_pending(sd->sc_periph); 378 379 splx(s); 380 381 /* Detach from the disk list. */ 382 disk_detach(&sd->sc_dk); 383 384 /* Get rid of the shutdown hook. */ 385 shutdownhook_disestablish(sd->sc_sdhook); 386 387 #if NRND > 0 388 /* Unhook the entropy source. */ 389 rnd_detach_source(&sd->rnd_source); 390 #endif 391 392 return (0); 393 } 394 395 /* 396 * open the device. Make sure the partition info is a up-to-date as can be. 397 */ 398 static int 399 sdopen(dev_t dev, int flag, int fmt, struct proc *p) 400 { 401 struct sd_softc *sd; 402 struct scsipi_periph *periph; 403 struct scsipi_adapter *adapt; 404 int unit, part; 405 int error; 406 407 unit = SDUNIT(dev); 408 if (unit >= sd_cd.cd_ndevs) 409 return (ENXIO); 410 sd = sd_cd.cd_devs[unit]; 411 if (sd == NULL) 412 return (ENXIO); 413 414 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 415 return (ENODEV); 416 417 part = SDPART(dev); 418 419 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 420 return (error); 421 422 /* 423 * If there are wedges, and this is not RAW_PART, then we 424 * need to fail. 425 */ 426 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 427 error = EBUSY; 428 goto bad1; 429 } 430 431 periph = sd->sc_periph; 432 adapt = periph->periph_channel->chan_adapter; 433 434 SC_DEBUG(periph, SCSIPI_DB1, 435 ("sdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 436 sd_cd.cd_ndevs, part)); 437 438 /* 439 * If this is the first open of this device, add a reference 440 * to the adapter. 441 */ 442 if (sd->sc_dk.dk_openmask == 0 && 443 (error = scsipi_adapter_addref(adapt)) != 0) 444 goto bad1; 445 446 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 447 /* 448 * If any partition is open, but the disk has been invalidated, 449 * disallow further opens of non-raw partition 450 */ 451 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 452 (part != RAW_PART || fmt != S_IFCHR)) { 453 error = EIO; 454 goto bad2; 455 } 456 } else { 457 int silent; 458 459 if (part == RAW_PART && fmt == S_IFCHR) 460 silent = XS_CTL_SILENT; 461 else 462 silent = 0; 463 464 /* Check that it is still responding and ok. */ 465 error = scsipi_test_unit_ready(periph, 466 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 467 silent); 468 469 /* 470 * Start the pack spinning if necessary. Always allow the 471 * raw parition to be opened, for raw IOCTLs. Data transfers 472 * will check for SDEV_MEDIA_LOADED. 473 */ 474 if (error == EIO) { 475 int error2; 476 477 error2 = scsipi_start(periph, SSS_START, silent); 478 switch (error2) { 479 case 0: 480 error = 0; 481 break; 482 case EIO: 483 case EINVAL: 484 break; 485 default: 486 error = error2; 487 break; 488 } 489 } 490 if (error) { 491 if (silent) 492 goto out; 493 goto bad2; 494 } 495 496 periph->periph_flags |= PERIPH_OPEN; 497 498 if (periph->periph_flags & PERIPH_REMOVABLE) { 499 /* Lock the pack in. */ 500 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 501 XS_CTL_IGNORE_ILLEGAL_REQUEST | 502 XS_CTL_IGNORE_MEDIA_CHANGE); 503 if (error) 504 goto bad3; 505 } 506 507 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 508 int param_error; 509 periph->periph_flags |= PERIPH_MEDIA_LOADED; 510 511 /* 512 * Load the physical device parameters. 513 * 514 * Note that if media is present but unformatted, 515 * we allow the open (so that it can be formatted!). 516 * The drive should refuse real I/O, if the media is 517 * unformatted. 518 */ 519 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 520 == SDGP_RESULT_OFFLINE) { 521 error = ENXIO; 522 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 523 goto bad3; 524 } 525 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 526 527 /* Load the partition info if not already loaded. */ 528 if (param_error == 0) { 529 sdgetdisklabel(sd); 530 SC_DEBUG(periph, SCSIPI_DB3, 531 ("Disklabel loaded ")); 532 } 533 } 534 } 535 536 /* Check that the partition exists. */ 537 if (part != RAW_PART && 538 (part >= sd->sc_dk.dk_label->d_npartitions || 539 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 540 error = ENXIO; 541 goto bad3; 542 } 543 544 out: /* Insure only one open at a time. */ 545 switch (fmt) { 546 case S_IFCHR: 547 sd->sc_dk.dk_copenmask |= (1 << part); 548 break; 549 case S_IFBLK: 550 sd->sc_dk.dk_bopenmask |= (1 << part); 551 break; 552 } 553 sd->sc_dk.dk_openmask = 554 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 555 556 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 557 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 558 return (0); 559 560 bad3: 561 if (sd->sc_dk.dk_openmask == 0) { 562 if (periph->periph_flags & PERIPH_REMOVABLE) 563 scsipi_prevent(periph, SPAMR_ALLOW, 564 XS_CTL_IGNORE_ILLEGAL_REQUEST | 565 XS_CTL_IGNORE_MEDIA_CHANGE); 566 periph->periph_flags &= ~PERIPH_OPEN; 567 } 568 569 bad2: 570 if (sd->sc_dk.dk_openmask == 0) 571 scsipi_adapter_delref(adapt); 572 573 bad1: 574 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 575 return (error); 576 } 577 578 /* 579 * close the device.. only called if we are the LAST occurence of an open 580 * device. Convenient now but usually a pain. 581 */ 582 static int 583 sdclose(dev_t dev, int flag, int fmt, struct proc *p) 584 { 585 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 586 struct scsipi_periph *periph = sd->sc_periph; 587 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 588 int part = SDPART(dev); 589 int error; 590 591 if ((error = lockmgr(&sd->sc_dk.dk_openlock, LK_EXCLUSIVE, NULL)) != 0) 592 return (error); 593 594 switch (fmt) { 595 case S_IFCHR: 596 sd->sc_dk.dk_copenmask &= ~(1 << part); 597 break; 598 case S_IFBLK: 599 sd->sc_dk.dk_bopenmask &= ~(1 << part); 600 break; 601 } 602 sd->sc_dk.dk_openmask = 603 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 604 605 if (sd->sc_dk.dk_openmask == 0) { 606 /* 607 * If the disk cache needs flushing, and the disk supports 608 * it, do it now. 609 */ 610 if ((sd->flags & SDF_DIRTY) != 0) { 611 if (sd_flush(sd, 0)) { 612 printf("%s: cache synchronization failed\n", 613 sd->sc_dev.dv_xname); 614 sd->flags &= ~SDF_FLUSHING; 615 } else 616 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 617 } 618 619 if (! (periph->periph_flags & PERIPH_KEEP_LABEL)) 620 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 621 622 scsipi_wait_drain(periph); 623 624 if (periph->periph_flags & PERIPH_REMOVABLE) 625 scsipi_prevent(periph, SPAMR_ALLOW, 626 XS_CTL_IGNORE_ILLEGAL_REQUEST | 627 XS_CTL_IGNORE_NOT_READY); 628 periph->periph_flags &= ~PERIPH_OPEN; 629 630 scsipi_wait_drain(periph); 631 632 scsipi_adapter_delref(adapt); 633 } 634 635 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 636 return (0); 637 } 638 639 /* 640 * Actually translate the requested transfer into one the physical driver 641 * can understand. The transfer is described by a buf and will include 642 * only one physical transfer. 643 */ 644 static void 645 sdstrategy(struct buf *bp) 646 { 647 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 648 struct scsipi_periph *periph = sd->sc_periph; 649 struct disklabel *lp; 650 daddr_t blkno; 651 int s; 652 boolean_t sector_aligned; 653 654 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 655 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 656 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 657 /* 658 * If the device has been made invalid, error out 659 */ 660 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 661 (sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 662 if (periph->periph_flags & PERIPH_OPEN) 663 bp->b_error = EIO; 664 else 665 bp->b_error = ENODEV; 666 goto bad; 667 } 668 669 lp = sd->sc_dk.dk_label; 670 671 /* 672 * The transfer must be a whole number of blocks, offset must not be 673 * negative. 674 */ 675 if (lp->d_secsize == DEV_BSIZE) { 676 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 677 } else { 678 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 679 } 680 if (!sector_aligned || bp->b_blkno < 0) { 681 bp->b_error = EINVAL; 682 goto bad; 683 } 684 /* 685 * If it's a null transfer, return immediatly 686 */ 687 if (bp->b_bcount == 0) 688 goto done; 689 690 /* 691 * Do bounds checking, adjust transfer. if error, process. 692 * If end of partition, just return. 693 */ 694 if (SDPART(bp->b_dev) == RAW_PART) { 695 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 696 sd->params.disksize512) <= 0) 697 goto done; 698 } else { 699 if (bounds_check_with_label(&sd->sc_dk, bp, 700 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 701 goto done; 702 } 703 704 /* 705 * Now convert the block number to absolute and put it in 706 * terms of the device's logical block size. 707 */ 708 if (lp->d_secsize == DEV_BSIZE) 709 blkno = bp->b_blkno; 710 else if (lp->d_secsize > DEV_BSIZE) 711 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 712 else 713 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 714 715 if (SDPART(bp->b_dev) != RAW_PART) 716 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 717 718 bp->b_rawblkno = blkno; 719 720 s = splbio(); 721 722 /* 723 * Place it in the queue of disk activities for this disk. 724 * 725 * XXX Only do disksort() if the current operating mode does not 726 * XXX include tagged queueing. 727 */ 728 BUFQ_PUT(&sd->buf_queue, bp); 729 730 /* 731 * Tell the device to get going on the transfer if it's 732 * not doing anything, otherwise just wait for completion 733 */ 734 sdstart(sd->sc_periph); 735 736 splx(s); 737 return; 738 739 bad: 740 bp->b_flags |= B_ERROR; 741 done: 742 /* 743 * Correctly set the buf to indicate a completed xfer 744 */ 745 bp->b_resid = bp->b_bcount; 746 biodone(bp); 747 } 748 749 /* 750 * sdstart looks to see if there is a buf waiting for the device 751 * and that the device is not already busy. If both are true, 752 * It dequeues the buf and creates a scsi command to perform the 753 * transfer in the buf. The transfer request will call scsipi_done 754 * on completion, which will in turn call this routine again 755 * so that the next queued transfer is performed. 756 * The bufs are queued by the strategy routine (sdstrategy) 757 * 758 * This routine is also called after other non-queued requests 759 * have been made of the scsi driver, to ensure that the queue 760 * continues to be drained. 761 * 762 * must be called at the correct (highish) spl level 763 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 764 */ 765 static void 766 sdstart(struct scsipi_periph *periph) 767 { 768 struct sd_softc *sd = (void *)periph->periph_dev; 769 struct disklabel *lp = sd->sc_dk.dk_label; 770 struct buf *bp = 0; 771 struct scsipi_rw_16 cmd16; 772 struct scsipi_rw_10 cmd_big; 773 struct scsi_rw_6 cmd_small; 774 struct scsipi_generic *cmdp; 775 struct scsipi_xfer *xs; 776 int nblks, cmdlen, error, flags; 777 778 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 779 /* 780 * Check if the device has room for another command 781 */ 782 while (periph->periph_active < periph->periph_openings) { 783 /* 784 * there is excess capacity, but a special waits 785 * It'll need the adapter as soon as we clear out of the 786 * way and let it run (user level wait). 787 */ 788 if (periph->periph_flags & PERIPH_WAITING) { 789 periph->periph_flags &= ~PERIPH_WAITING; 790 wakeup((caddr_t)periph); 791 return; 792 } 793 794 /* 795 * If the device has become invalid, abort all the 796 * reads and writes until all files have been closed and 797 * re-opened 798 */ 799 if (__predict_false( 800 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 801 if ((bp = BUFQ_GET(&sd->buf_queue)) != NULL) { 802 bp->b_error = EIO; 803 bp->b_flags |= B_ERROR; 804 bp->b_resid = bp->b_bcount; 805 biodone(bp); 806 continue; 807 } else { 808 return; 809 } 810 } 811 812 /* 813 * See if there is a buf with work for us to do.. 814 */ 815 if ((bp = BUFQ_PEEK(&sd->buf_queue)) == NULL) 816 return; 817 818 /* 819 * We have a buf, now we should make a command. 820 */ 821 822 if (lp->d_secsize == DEV_BSIZE) 823 nblks = bp->b_bcount >> DEV_BSHIFT; 824 else 825 nblks = howmany(bp->b_bcount, lp->d_secsize); 826 827 /* 828 * Fill out the scsi command. Use the smallest CDB possible 829 * (6-byte, 10-byte, or 16-byte). 830 */ 831 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 832 ((nblks & 0xff) == nblks) && 833 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 834 /* 6-byte CDB */ 835 memset(&cmd_small, 0, sizeof(cmd_small)); 836 cmd_small.opcode = (bp->b_flags & B_READ) ? 837 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 838 _lto3b(bp->b_rawblkno, cmd_small.addr); 839 cmd_small.length = nblks & 0xff; 840 cmdlen = sizeof(cmd_small); 841 cmdp = (struct scsipi_generic *)&cmd_small; 842 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 843 /* 10-byte CDB */ 844 memset(&cmd_big, 0, sizeof(cmd_big)); 845 cmd_big.opcode = (bp->b_flags & B_READ) ? 846 READ_10 : WRITE_10; 847 _lto4b(bp->b_rawblkno, cmd_big.addr); 848 _lto2b(nblks, cmd_big.length); 849 cmdlen = sizeof(cmd_big); 850 cmdp = (struct scsipi_generic *)&cmd_big; 851 } else { 852 /* 16-byte CDB */ 853 memset(&cmd16, 0, sizeof(cmd16)); 854 cmd16.opcode = (bp->b_flags & B_READ) ? 855 READ_16 : WRITE_16; 856 _lto8b(bp->b_rawblkno, cmd16.addr); 857 _lto4b(nblks, cmd16.length); 858 cmdlen = sizeof(cmd16); 859 cmdp = (struct scsipi_generic *)&cmd16; 860 } 861 862 /* Instrumentation. */ 863 disk_busy(&sd->sc_dk); 864 865 /* 866 * Mark the disk dirty so that the cache will be 867 * flushed on close. 868 */ 869 if ((bp->b_flags & B_READ) == 0) 870 sd->flags |= SDF_DIRTY; 871 872 /* 873 * Figure out what flags to use. 874 */ 875 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 876 if (bp->b_flags & B_READ) 877 flags |= XS_CTL_DATA_IN; 878 else 879 flags |= XS_CTL_DATA_OUT; 880 881 /* 882 * Call the routine that chats with the adapter. 883 * Note: we cannot sleep as we may be an interrupt 884 */ 885 xs = scsipi_make_xs(periph, cmdp, cmdlen, 886 (u_char *)bp->b_data, bp->b_bcount, 887 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 888 if (__predict_false(xs == NULL)) { 889 /* 890 * out of memory. Keep this buffer in the queue, and 891 * retry later. 892 */ 893 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 894 periph); 895 return; 896 } 897 /* 898 * need to dequeue the buffer before queuing the command, 899 * because cdstart may be called recursively from the 900 * HBA driver 901 */ 902 #ifdef DIAGNOSTIC 903 if (BUFQ_GET(&sd->buf_queue) != bp) 904 panic("sdstart(): dequeued wrong buf"); 905 #else 906 BUFQ_GET(&sd->buf_queue); 907 #endif 908 error = scsipi_execute_xs(xs); 909 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 910 KASSERT(error == 0); 911 } 912 } 913 914 static void 915 sdrestart(void *v) 916 { 917 int s = splbio(); 918 sdstart((struct scsipi_periph *)v); 919 splx(s); 920 } 921 922 static void 923 sddone(struct scsipi_xfer *xs, int error) 924 { 925 struct sd_softc *sd = (void *)xs->xs_periph->periph_dev; 926 struct buf *bp = xs->bp; 927 928 if (sd->flags & SDF_FLUSHING) { 929 /* Flush completed, no longer dirty. */ 930 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 931 } 932 933 if (bp) { 934 bp->b_error = error; 935 bp->b_resid = xs->resid; 936 if (error) 937 bp->b_flags |= B_ERROR; 938 939 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 940 (bp->b_flags & B_READ)); 941 #if NRND > 0 942 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 943 #endif 944 945 biodone(bp); 946 } 947 } 948 949 static void 950 sdminphys(struct buf *bp) 951 { 952 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(bp->b_dev)]; 953 long xmax; 954 955 /* 956 * If the device is ancient, we want to make sure that 957 * the transfer fits into a 6-byte cdb. 958 * 959 * XXX Note that the SCSI-I spec says that 256-block transfers 960 * are allowed in a 6-byte read/write, and are specified 961 * by settng the "length" to 0. However, we're conservative 962 * here, allowing only 255-block transfers in case an 963 * ancient device gets confused by length == 0. A length of 0 964 * in a 10-byte read/write actually means 0 blocks. 965 */ 966 if ((sd->flags & SDF_ANCIENT) && 967 ((sd->sc_periph->periph_flags & 968 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 969 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 970 971 if (bp->b_bcount > xmax) 972 bp->b_bcount = xmax; 973 } 974 975 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 976 } 977 978 static int 979 sdread(dev_t dev, struct uio *uio, int ioflag) 980 { 981 982 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 983 } 984 985 static int 986 sdwrite(dev_t dev, struct uio *uio, int ioflag) 987 { 988 989 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 990 } 991 992 /* 993 * Perform special action on behalf of the user 994 * Knows about the internals of this device 995 */ 996 static int 997 sdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 998 { 999 struct sd_softc *sd = sd_cd.cd_devs[SDUNIT(dev)]; 1000 struct scsipi_periph *periph = sd->sc_periph; 1001 int part = SDPART(dev); 1002 int error = 0; 1003 #ifdef __HAVE_OLD_DISKLABEL 1004 struct disklabel *newlabel = NULL; 1005 #endif 1006 1007 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1008 1009 /* 1010 * If the device is not valid, some IOCTLs can still be 1011 * handled on the raw partition. Check this here. 1012 */ 1013 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1014 switch (cmd) { 1015 case DIOCKLABEL: 1016 case DIOCWLABEL: 1017 case DIOCLOCK: 1018 case DIOCEJECT: 1019 case ODIOCEJECT: 1020 case DIOCGCACHE: 1021 case DIOCSCACHE: 1022 case SCIOCIDENTIFY: 1023 case OSCIOCIDENTIFY: 1024 case SCIOCCOMMAND: 1025 case SCIOCDEBUG: 1026 if (part == RAW_PART) 1027 break; 1028 /* FALLTHROUGH */ 1029 default: 1030 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1031 return (ENODEV); 1032 else 1033 return (EIO); 1034 } 1035 } 1036 1037 switch (cmd) { 1038 case DIOCGDINFO: 1039 *(struct disklabel *)addr = *(sd->sc_dk.dk_label); 1040 return (0); 1041 1042 #ifdef __HAVE_OLD_DISKLABEL 1043 case ODIOCGDINFO: 1044 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1045 if (newlabel == NULL) 1046 return EIO; 1047 memcpy(newlabel, sd->sc_dk.dk_label, sizeof (*newlabel)); 1048 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1049 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1050 else 1051 error = ENOTTY; 1052 free(newlabel, M_TEMP); 1053 return error; 1054 #endif 1055 1056 case DIOCGPART: 1057 ((struct partinfo *)addr)->disklab = sd->sc_dk.dk_label; 1058 ((struct partinfo *)addr)->part = 1059 &sd->sc_dk.dk_label->d_partitions[part]; 1060 return (0); 1061 1062 case DIOCWDINFO: 1063 case DIOCSDINFO: 1064 #ifdef __HAVE_OLD_DISKLABEL 1065 case ODIOCWDINFO: 1066 case ODIOCSDINFO: 1067 #endif 1068 { 1069 struct disklabel *lp; 1070 1071 if ((flag & FWRITE) == 0) 1072 return (EBADF); 1073 1074 #ifdef __HAVE_OLD_DISKLABEL 1075 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1076 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1077 if (newlabel == NULL) 1078 return EIO; 1079 memset(newlabel, 0, sizeof newlabel); 1080 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1081 lp = newlabel; 1082 } else 1083 #endif 1084 lp = (struct disklabel *)addr; 1085 1086 if ((error = lockmgr(&sd->sc_dk.dk_openlock, 1087 LK_EXCLUSIVE, NULL)) != 0) 1088 goto bad; 1089 sd->flags |= SDF_LABELLING; 1090 1091 error = setdisklabel(sd->sc_dk.dk_label, 1092 lp, /*sd->sc_dk.dk_openmask : */0, 1093 sd->sc_dk.dk_cpulabel); 1094 if (error == 0) { 1095 if (cmd == DIOCWDINFO 1096 #ifdef __HAVE_OLD_DISKLABEL 1097 || cmd == ODIOCWDINFO 1098 #endif 1099 ) 1100 error = writedisklabel(SDLABELDEV(dev), 1101 sdstrategy, sd->sc_dk.dk_label, 1102 sd->sc_dk.dk_cpulabel); 1103 } 1104 1105 sd->flags &= ~SDF_LABELLING; 1106 (void) lockmgr(&sd->sc_dk.dk_openlock, LK_RELEASE, NULL); 1107 bad: 1108 #ifdef __HAVE_OLD_DISKLABEL 1109 if (newlabel != NULL) 1110 free(newlabel, M_TEMP); 1111 #endif 1112 return (error); 1113 } 1114 1115 case DIOCKLABEL: 1116 if (*(int *)addr) 1117 periph->periph_flags |= PERIPH_KEEP_LABEL; 1118 else 1119 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1120 return (0); 1121 1122 case DIOCWLABEL: 1123 if ((flag & FWRITE) == 0) 1124 return (EBADF); 1125 if (*(int *)addr) 1126 sd->flags |= SDF_WLABEL; 1127 else 1128 sd->flags &= ~SDF_WLABEL; 1129 return (0); 1130 1131 case DIOCLOCK: 1132 return (scsipi_prevent(periph, 1133 (*(int *)addr) ? SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1134 1135 case DIOCEJECT: 1136 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1137 return (ENOTTY); 1138 if (*(int *)addr == 0) { 1139 /* 1140 * Don't force eject: check that we are the only 1141 * partition open. If so, unlock it. 1142 */ 1143 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1144 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1145 sd->sc_dk.dk_openmask) { 1146 error = scsipi_prevent(periph, SPAMR_ALLOW, 1147 XS_CTL_IGNORE_NOT_READY); 1148 if (error) 1149 return (error); 1150 } else { 1151 return (EBUSY); 1152 } 1153 } 1154 /* FALLTHROUGH */ 1155 case ODIOCEJECT: 1156 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1157 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1158 1159 case DIOCGDEFLABEL: 1160 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1161 return (0); 1162 1163 #ifdef __HAVE_OLD_DISKLABEL 1164 case ODIOCGDEFLABEL: 1165 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1166 if (newlabel == NULL) 1167 return EIO; 1168 sdgetdefaultlabel(sd, newlabel); 1169 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1170 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1171 else 1172 error = ENOTTY; 1173 free(newlabel, M_TEMP); 1174 return error; 1175 #endif 1176 1177 case DIOCGCACHE: 1178 return (sd_getcache(sd, (int *) addr)); 1179 1180 case DIOCSCACHE: 1181 if ((flag & FWRITE) == 0) 1182 return (EBADF); 1183 return (sd_setcache(sd, *(int *) addr)); 1184 1185 case DIOCCACHESYNC: 1186 /* 1187 * XXX Do we really need to care about having a writable 1188 * file descriptor here? 1189 */ 1190 if ((flag & FWRITE) == 0) 1191 return (EBADF); 1192 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1193 error = sd_flush(sd, 0); 1194 if (error) 1195 sd->flags &= ~SDF_FLUSHING; 1196 else 1197 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1198 } else 1199 error = 0; 1200 return (error); 1201 1202 case DIOCAWEDGE: 1203 { 1204 struct dkwedge_info *dkw = (void *) addr; 1205 1206 if ((flag & FWRITE) == 0) 1207 return (EBADF); 1208 1209 /* If the ioctl happens here, the parent is us. */ 1210 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1211 return (dkwedge_add(dkw)); 1212 } 1213 1214 case DIOCDWEDGE: 1215 { 1216 struct dkwedge_info *dkw = (void *) addr; 1217 1218 if ((flag & FWRITE) == 0) 1219 return (EBADF); 1220 1221 /* If the ioctl happens here, the parent is us. */ 1222 strcpy(dkw->dkw_parent, sd->sc_dev.dv_xname); 1223 return (dkwedge_del(dkw)); 1224 } 1225 1226 case DIOCLWEDGES: 1227 { 1228 struct dkwedge_list *dkwl = (void *) addr; 1229 1230 return (dkwedge_list(&sd->sc_dk, dkwl, p)); 1231 } 1232 1233 default: 1234 if (part != RAW_PART) 1235 return (ENOTTY); 1236 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, p)); 1237 } 1238 1239 #ifdef DIAGNOSTIC 1240 panic("sdioctl: impossible"); 1241 #endif 1242 } 1243 1244 static void 1245 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1246 { 1247 1248 memset(lp, 0, sizeof(struct disklabel)); 1249 1250 lp->d_secsize = sd->params.blksize; 1251 lp->d_ntracks = sd->params.heads; 1252 lp->d_nsectors = sd->params.sectors; 1253 lp->d_ncylinders = sd->params.cyls; 1254 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1255 1256 switch (scsipi_periph_bustype(sd->sc_periph)) { 1257 case SCSIPI_BUSTYPE_SCSI: 1258 lp->d_type = DTYPE_SCSI; 1259 break; 1260 case SCSIPI_BUSTYPE_ATAPI: 1261 lp->d_type = DTYPE_ATAPI; 1262 break; 1263 } 1264 /* 1265 * XXX 1266 * We could probe the mode pages to figure out what kind of disc it is. 1267 * Is this worthwhile? 1268 */ 1269 strncpy(lp->d_typename, "mydisk", 16); 1270 strncpy(lp->d_packname, "fictitious", 16); 1271 lp->d_secperunit = sd->params.disksize; 1272 lp->d_rpm = sd->params.rot_rate; 1273 lp->d_interleave = 1; 1274 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1275 D_REMOVABLE : 0; 1276 1277 lp->d_partitions[RAW_PART].p_offset = 0; 1278 lp->d_partitions[RAW_PART].p_size = 1279 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1280 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1281 lp->d_npartitions = RAW_PART + 1; 1282 1283 lp->d_magic = DISKMAGIC; 1284 lp->d_magic2 = DISKMAGIC; 1285 lp->d_checksum = dkcksum(lp); 1286 } 1287 1288 1289 /* 1290 * Load the label information on the named device 1291 */ 1292 static void 1293 sdgetdisklabel(struct sd_softc *sd) 1294 { 1295 struct disklabel *lp = sd->sc_dk.dk_label; 1296 const char *errstring; 1297 1298 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1299 1300 sdgetdefaultlabel(sd, lp); 1301 1302 if (lp->d_secpercyl == 0) { 1303 lp->d_secpercyl = 100; 1304 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1305 } 1306 1307 /* 1308 * Call the generic disklabel extraction routine 1309 */ 1310 errstring = readdisklabel(MAKESDDEV(0, sd->sc_dev.dv_unit, RAW_PART), 1311 sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1312 if (errstring) { 1313 printf("%s: %s\n", sd->sc_dev.dv_xname, errstring); 1314 return; 1315 } 1316 } 1317 1318 static void 1319 sd_shutdown(void *arg) 1320 { 1321 struct sd_softc *sd = arg; 1322 1323 /* 1324 * If the disk cache needs to be flushed, and the disk supports 1325 * it, flush it. We're cold at this point, so we poll for 1326 * completion. 1327 */ 1328 if ((sd->flags & SDF_DIRTY) != 0) { 1329 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1330 printf("%s: cache synchronization failed\n", 1331 sd->sc_dev.dv_xname); 1332 sd->flags &= ~SDF_FLUSHING; 1333 } else 1334 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1335 } 1336 } 1337 1338 /* 1339 * Check Errors 1340 */ 1341 static int 1342 sd_interpret_sense(struct scsipi_xfer *xs) 1343 { 1344 struct scsipi_periph *periph = xs->xs_periph; 1345 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1346 struct sd_softc *sd = (void *)periph->periph_dev; 1347 int s, error, retval = EJUSTRETURN; 1348 1349 /* 1350 * If the periph is already recovering, just do the normal 1351 * error processing. 1352 */ 1353 if (periph->periph_flags & PERIPH_RECOVERING) 1354 return (retval); 1355 1356 /* 1357 * If the device is not open yet, let the generic code handle it. 1358 */ 1359 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1360 return (retval); 1361 1362 /* 1363 * If it isn't a extended or extended/deferred error, let 1364 * the generic code handle it. 1365 */ 1366 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1367 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1368 return (retval); 1369 1370 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1371 sense->asc == 0x4) { 1372 if (sense->ascq == 0x01) { 1373 /* 1374 * Unit In The Process Of Becoming Ready. 1375 */ 1376 printf("%s: waiting for pack to spin up...\n", 1377 sd->sc_dev.dv_xname); 1378 if (!callout_pending(&periph->periph_callout)) 1379 scsipi_periph_freeze(periph, 1); 1380 callout_reset(&periph->periph_callout, 1381 5 * hz, scsipi_periph_timed_thaw, periph); 1382 retval = ERESTART; 1383 } else if (sense->ascq == 0x02) { 1384 printf("%s: pack is stopped, restarting...\n", 1385 sd->sc_dev.dv_xname); 1386 s = splbio(); 1387 periph->periph_flags |= PERIPH_RECOVERING; 1388 splx(s); 1389 error = scsipi_start(periph, SSS_START, 1390 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1391 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1392 if (error) { 1393 printf("%s: unable to restart pack\n", 1394 sd->sc_dev.dv_xname); 1395 retval = error; 1396 } else 1397 retval = ERESTART; 1398 s = splbio(); 1399 periph->periph_flags &= ~PERIPH_RECOVERING; 1400 splx(s); 1401 } 1402 } 1403 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1404 sense->asc == 0x31 && 1405 sense->ascq == 0x00) { /* maybe for any asq ? */ 1406 /* Medium Format Corrupted */ 1407 retval = EFTYPE; 1408 } 1409 return (retval); 1410 } 1411 1412 1413 static int 1414 sdsize(dev_t dev) 1415 { 1416 struct sd_softc *sd; 1417 int part, unit, omask; 1418 int size; 1419 1420 unit = SDUNIT(dev); 1421 if (unit >= sd_cd.cd_ndevs) 1422 return (-1); 1423 sd = sd_cd.cd_devs[unit]; 1424 if (sd == NULL) 1425 return (-1); 1426 1427 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1428 return (-1); 1429 1430 part = SDPART(dev); 1431 omask = sd->sc_dk.dk_openmask & (1 << part); 1432 1433 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1434 return (-1); 1435 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1436 size = -1; 1437 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1438 size = -1; 1439 else 1440 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1441 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1442 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1443 return (-1); 1444 return (size); 1445 } 1446 1447 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1448 static struct scsipi_xfer sx; 1449 static int sddoingadump; 1450 1451 /* 1452 * dump all of physical memory into the partition specified, starting 1453 * at offset 'dumplo' into the partition. 1454 */ 1455 static int 1456 sddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1457 { 1458 struct sd_softc *sd; /* disk unit to do the I/O */ 1459 struct disklabel *lp; /* disk's disklabel */ 1460 int unit, part; 1461 int sectorsize; /* size of a disk sector */ 1462 int nsects; /* number of sectors in partition */ 1463 int sectoff; /* sector offset of partition */ 1464 int totwrt; /* total number of sectors left to write */ 1465 int nwrt; /* current number of sectors to write */ 1466 struct scsipi_rw_10 cmd; /* write command */ 1467 struct scsipi_xfer *xs; /* ... convenience */ 1468 struct scsipi_periph *periph; 1469 struct scsipi_channel *chan; 1470 1471 /* Check if recursive dump; if so, punt. */ 1472 if (sddoingadump) 1473 return (EFAULT); 1474 1475 /* Mark as active early. */ 1476 sddoingadump = 1; 1477 1478 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1479 part = SDPART(dev); 1480 1481 /* Check for acceptable drive number. */ 1482 if (unit >= sd_cd.cd_ndevs || (sd = sd_cd.cd_devs[unit]) == NULL) 1483 return (ENXIO); 1484 1485 if ((sd->sc_dev.dv_flags & DVF_ACTIVE) == 0) 1486 return (ENODEV); 1487 1488 periph = sd->sc_periph; 1489 chan = periph->periph_channel; 1490 1491 /* Make sure it was initialized. */ 1492 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1493 return (ENXIO); 1494 1495 /* Convert to disk sectors. Request must be a multiple of size. */ 1496 lp = sd->sc_dk.dk_label; 1497 sectorsize = lp->d_secsize; 1498 if ((size % sectorsize) != 0) 1499 return (EFAULT); 1500 totwrt = size / sectorsize; 1501 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1502 1503 nsects = lp->d_partitions[part].p_size; 1504 sectoff = lp->d_partitions[part].p_offset; 1505 1506 /* Check transfer bounds against partition size. */ 1507 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1508 return (EINVAL); 1509 1510 /* Offset block number to start of partition. */ 1511 blkno += sectoff; 1512 1513 xs = &sx; 1514 1515 while (totwrt > 0) { 1516 nwrt = totwrt; /* XXX */ 1517 #ifndef SD_DUMP_NOT_TRUSTED 1518 /* 1519 * Fill out the scsi command 1520 */ 1521 memset(&cmd, 0, sizeof(cmd)); 1522 cmd.opcode = WRITE_10; 1523 _lto4b(blkno, cmd.addr); 1524 _lto2b(nwrt, cmd.length); 1525 /* 1526 * Fill out the scsipi_xfer structure 1527 * Note: we cannot sleep as we may be an interrupt 1528 * don't use scsipi_command() as it may want to wait 1529 * for an xs. 1530 */ 1531 memset(xs, 0, sizeof(sx)); 1532 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1533 XS_CTL_DATA_OUT; 1534 xs->xs_status = 0; 1535 xs->xs_periph = periph; 1536 xs->xs_retries = SDRETRIES; 1537 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1538 xs->cmd = (struct scsipi_generic *)&cmd; 1539 xs->cmdlen = sizeof(cmd); 1540 xs->resid = nwrt * sectorsize; 1541 xs->error = XS_NOERROR; 1542 xs->bp = 0; 1543 xs->data = va; 1544 xs->datalen = nwrt * sectorsize; 1545 1546 /* 1547 * Pass all this info to the scsi driver. 1548 */ 1549 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1550 if ((xs->xs_status & XS_STS_DONE) == 0 || 1551 xs->error != XS_NOERROR) 1552 return (EIO); 1553 #else /* SD_DUMP_NOT_TRUSTED */ 1554 /* Let's just talk about this first... */ 1555 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1556 delay(500 * 1000); /* half a second */ 1557 #endif /* SD_DUMP_NOT_TRUSTED */ 1558 1559 /* update block count */ 1560 totwrt -= nwrt; 1561 blkno += nwrt; 1562 va += sectorsize * nwrt; 1563 } 1564 sddoingadump = 0; 1565 return (0); 1566 } 1567 1568 static int 1569 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1570 int page, int flags, int *big) 1571 { 1572 1573 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1574 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1575 *big = 1; 1576 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1577 size + sizeof(struct scsi_mode_parameter_header_10), 1578 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1579 } else { 1580 *big = 0; 1581 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1582 size + sizeof(struct scsi_mode_parameter_header_6), 1583 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1584 } 1585 } 1586 1587 static int 1588 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1589 int flags, int big) 1590 { 1591 1592 if (big) { 1593 struct scsi_mode_parameter_header_10 *header = sense; 1594 1595 _lto2b(0, header->data_length); 1596 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1597 size + sizeof(struct scsi_mode_parameter_header_10), 1598 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1599 } else { 1600 struct scsi_mode_parameter_header_6 *header = sense; 1601 1602 header->data_length = 0; 1603 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1604 size + sizeof(struct scsi_mode_parameter_header_6), 1605 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1606 } 1607 } 1608 1609 static int 1610 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1611 { 1612 struct { 1613 struct scsi_mode_parameter_header_6 header; 1614 /* no block descriptor */ 1615 u_int8_t pg_code; /* page code (should be 6) */ 1616 u_int8_t pg_length; /* page length (should be 11) */ 1617 u_int8_t wcd; /* bit0: cache disable */ 1618 u_int8_t lbs[2]; /* logical block size */ 1619 u_int8_t size[5]; /* number of log. blocks */ 1620 u_int8_t pp; /* power/performance */ 1621 u_int8_t flags; 1622 u_int8_t resvd; 1623 } scsipi_sense; 1624 u_int64_t sectors; 1625 int error; 1626 1627 /* 1628 * scsipi_size (ie "read capacity") and mode sense page 6 1629 * give the same information. Do both for now, and check 1630 * for consistency. 1631 * XXX probably differs for removable media 1632 */ 1633 dp->blksize = 512; 1634 if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0) 1635 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1636 1637 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1638 &scsipi_sense.header, sizeof(scsipi_sense), 1639 flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000); 1640 1641 if (error != 0) 1642 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1643 1644 dp->blksize = _2btol(scsipi_sense.lbs); 1645 if (dp->blksize == 0) 1646 dp->blksize = 512; 1647 1648 /* 1649 * Create a pseudo-geometry. 1650 */ 1651 dp->heads = 64; 1652 dp->sectors = 32; 1653 dp->cyls = sectors / (dp->heads * dp->sectors); 1654 dp->disksize = _5btol(scsipi_sense.size); 1655 if (dp->disksize <= UINT32_MAX && dp->disksize != sectors) { 1656 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1657 (unsigned long long)dp->disksize, 1658 (unsigned long long)sectors); 1659 dp->disksize = sectors; 1660 } 1661 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1662 1663 return (SDGP_RESULT_OK); 1664 } 1665 1666 /* 1667 * Get the scsi driver to send a full inquiry to the * device and use the 1668 * results to fill out the disk parameter structure. 1669 */ 1670 static int 1671 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1672 { 1673 u_int64_t sectors; 1674 int error; 1675 #if 0 1676 int i; 1677 u_int8_t *p; 1678 #endif 1679 1680 dp->disksize = sectors = scsipi_size(sd->sc_periph, flags); 1681 if (sectors == 0) { 1682 struct scsipi_read_format_capacities cmd; 1683 struct { 1684 struct scsipi_capacity_list_header header; 1685 struct scsipi_capacity_descriptor desc; 1686 } __attribute__((packed)) data; 1687 1688 memset(&cmd, 0, sizeof(cmd)); 1689 memset(&data, 0, sizeof(data)); 1690 cmd.opcode = READ_FORMAT_CAPACITIES; 1691 _lto2b(sizeof(data), cmd.length); 1692 1693 error = scsipi_command(sd->sc_periph, 1694 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1695 SDRETRIES, 20000, NULL, 1696 flags | XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 1697 if (error == EFTYPE) { 1698 /* Medium Format Corrupted, handle as not formatted */ 1699 return (SDGP_RESULT_UNFORMATTED); 1700 } 1701 if (error || data.header.length == 0) 1702 return (SDGP_RESULT_OFFLINE); 1703 1704 #if 0 1705 printf("rfc: length=%d\n", data.header.length); 1706 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"); 1707 #endif 1708 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1709 case SCSIPI_CAP_DESC_CODE_RESERVED: 1710 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1711 break; 1712 1713 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1714 return (SDGP_RESULT_UNFORMATTED); 1715 1716 case SCSIPI_CAP_DESC_CODE_NONE: 1717 return (SDGP_RESULT_OFFLINE); 1718 } 1719 1720 dp->disksize = sectors = _4btol(data.desc.nblks); 1721 if (sectors == 0) 1722 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1723 1724 dp->blksize = _3btol(data.desc.blklen); 1725 if (dp->blksize == 0) 1726 dp->blksize = 512; 1727 } else { 1728 struct sd_mode_sense_data scsipi_sense; 1729 int big, bsize; 1730 struct scsi_general_block_descriptor *bdesc; 1731 1732 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1733 error = sd_mode_sense(sd, 0, &scsipi_sense, 1734 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1735 dp->blksize = 512; 1736 if (!error) { 1737 if (big) { 1738 bdesc = (void *)(&scsipi_sense.header.big + 1); 1739 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1740 } else { 1741 bdesc = (void *)(&scsipi_sense.header.small + 1); 1742 bsize = scsipi_sense.header.small.blk_desc_len; 1743 } 1744 1745 #if 0 1746 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1747 printf("page 0 bsize=%d\n", bsize); 1748 printf("page 0 ok\n"); 1749 #endif 1750 1751 if (bsize >= 8) { 1752 dp->blksize = _3btol(bdesc->blklen); 1753 if (dp->blksize == 0) 1754 dp->blksize = 512; 1755 } 1756 } 1757 } 1758 1759 dp->disksize512 = (sectors * dp->blksize) / DEV_BSIZE; 1760 return (0); 1761 } 1762 1763 static int 1764 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1765 { 1766 struct sd_mode_sense_data scsipi_sense; 1767 int error; 1768 int big, poffset, byte2; 1769 union scsi_disk_pages *pages; 1770 #if 0 1771 int i; 1772 u_int8_t *p; 1773 #endif 1774 1775 byte2 = SMS_DBD; 1776 again: 1777 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1778 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1779 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1780 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1781 flags | XS_CTL_SILENT, &big); 1782 if (error) { 1783 if (byte2 == SMS_DBD) { 1784 /* No result; try once more with DBD off */ 1785 byte2 = 0; 1786 goto again; 1787 } 1788 return (error); 1789 } 1790 1791 if (big) { 1792 poffset = sizeof scsipi_sense.header.big; 1793 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1794 } else { 1795 poffset = sizeof scsipi_sense.header.small; 1796 poffset += scsipi_sense.header.small.blk_desc_len; 1797 } 1798 1799 pages = (void *)((u_long)&scsipi_sense + poffset); 1800 #if 0 1801 printf("page 4 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1802 printf("page 4 pg_code=%d sense=%p/%p\n", pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1803 #endif 1804 1805 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1806 return (ERESTART); 1807 1808 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1809 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1810 _3btol(pages->rigid_geometry.ncyl), 1811 pages->rigid_geometry.nheads, 1812 _2btol(pages->rigid_geometry.st_cyl_wp), 1813 _2btol(pages->rigid_geometry.st_cyl_rwc), 1814 _2btol(pages->rigid_geometry.land_zone))); 1815 1816 /* 1817 * KLUDGE!! (for zone recorded disks) 1818 * give a number of sectors so that sec * trks * cyls 1819 * is <= disk_size 1820 * can lead to wasted space! THINK ABOUT THIS ! 1821 */ 1822 dp->heads = pages->rigid_geometry.nheads; 1823 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1824 if (dp->heads == 0 || dp->cyls == 0) 1825 return (ERESTART); 1826 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1827 1828 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1829 if (dp->rot_rate == 0) 1830 dp->rot_rate = 3600; 1831 1832 #if 0 1833 printf("page 4 ok\n"); 1834 #endif 1835 return (0); 1836 } 1837 1838 static int 1839 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 1840 { 1841 struct sd_mode_sense_data scsipi_sense; 1842 int error; 1843 int big, poffset, byte2; 1844 union scsi_disk_pages *pages; 1845 #if 0 1846 int i; 1847 u_int8_t *p; 1848 #endif 1849 1850 byte2 = SMS_DBD; 1851 again: 1852 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1853 error = sd_mode_sense(sd, 0, &scsipi_sense, 1854 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1855 sizeof(scsipi_sense.pages.flex_geometry), 5, 1856 flags | XS_CTL_SILENT, &big); 1857 if (error) { 1858 if (byte2 == SMS_DBD) { 1859 /* No result; try once more with DBD off */ 1860 byte2 = 0; 1861 goto again; 1862 } 1863 return (error); 1864 } 1865 1866 if (big) { 1867 poffset = sizeof scsipi_sense.header.big; 1868 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1869 } else { 1870 poffset = sizeof scsipi_sense.header.small; 1871 poffset += scsipi_sense.header.small.blk_desc_len; 1872 } 1873 1874 pages = (void *)((u_long)&scsipi_sense + poffset); 1875 #if 0 1876 printf("page 5 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1877 printf("page 5 pg_code=%d sense=%p/%p\n", pages->flex_geometry.pg_code, &scsipi_sense, pages); 1878 #endif 1879 1880 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 1881 return (ERESTART); 1882 1883 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1884 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 1885 _3btol(pages->flex_geometry.ncyl), 1886 pages->flex_geometry.nheads, 1887 pages->flex_geometry.ph_sec_tr, 1888 _2btol(pages->flex_geometry.bytes_s))); 1889 1890 dp->heads = pages->flex_geometry.nheads; 1891 dp->cyls = _2btol(pages->flex_geometry.ncyl); 1892 dp->sectors = pages->flex_geometry.ph_sec_tr; 1893 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 1894 return (ERESTART); 1895 1896 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1897 if (dp->rot_rate == 0) 1898 dp->rot_rate = 3600; 1899 1900 #if 0 1901 printf("page 5 ok\n"); 1902 #endif 1903 return (0); 1904 } 1905 1906 static int 1907 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1908 { 1909 int error; 1910 1911 /* 1912 * If offline, the SDEV_MEDIA_LOADED flag will be 1913 * cleared by the caller if necessary. 1914 */ 1915 if (sd->type == T_SIMPLE_DIRECT) 1916 return (sd_get_simplifiedparms(sd, dp, flags)); 1917 1918 error = sd_get_capacity(sd, dp, flags); 1919 if (error) 1920 return (error); 1921 1922 if (sd->type == T_OPTICAL) 1923 goto page0; 1924 1925 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 1926 if (!sd_get_parms_page5(sd, dp, flags) || 1927 !sd_get_parms_page4(sd, dp, flags)) 1928 return (SDGP_RESULT_OK); 1929 } else { 1930 if (!sd_get_parms_page4(sd, dp, flags) || 1931 !sd_get_parms_page5(sd, dp, flags)) 1932 return (SDGP_RESULT_OK); 1933 } 1934 1935 page0: 1936 printf("%s: fabricating a geometry\n", sd->sc_dev.dv_xname); 1937 /* Try calling driver's method for figuring out geometry. */ 1938 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 1939 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 1940 (sd->sc_periph, dp, dp->disksize)) { 1941 /* 1942 * Use adaptec standard fictitious geometry 1943 * this depends on which controller (e.g. 1542C is 1944 * different. but we have to put SOMETHING here..) 1945 */ 1946 dp->heads = 64; 1947 dp->sectors = 32; 1948 dp->cyls = dp->disksize / (64 * 32); 1949 } 1950 dp->rot_rate = 3600; 1951 return (SDGP_RESULT_OK); 1952 } 1953 1954 static int 1955 sd_flush(struct sd_softc *sd, int flags) 1956 { 1957 struct scsipi_periph *periph = sd->sc_periph; 1958 struct scsi_synchronize_cache_10 cmd; 1959 1960 /* 1961 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 1962 * We issue with address 0 length 0, which should be 1963 * interpreted by the device as "all remaining blocks 1964 * starting at address 0". We ignore ILLEGAL REQUEST 1965 * in the event that the command is not supported by 1966 * the device, and poll for completion so that we know 1967 * that the cache has actually been flushed. 1968 * 1969 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 1970 * command, as indicated by our quirks flags. 1971 * 1972 * XXX What about older devices? 1973 */ 1974 if (periph->periph_version < 2 || 1975 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 1976 return (0); 1977 1978 sd->flags |= SDF_FLUSHING; 1979 memset(&cmd, 0, sizeof(cmd)); 1980 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 1981 1982 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 1983 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1984 } 1985 1986 static int 1987 sd_getcache(struct sd_softc *sd, int *bitsp) 1988 { 1989 struct scsipi_periph *periph = sd->sc_periph; 1990 struct sd_mode_sense_data scsipi_sense; 1991 int error, bits = 0; 1992 int big; 1993 union scsi_disk_pages *pages; 1994 1995 if (periph->periph_version < 2) 1996 return (EOPNOTSUPP); 1997 1998 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1999 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2000 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2001 if (error) 2002 return (error); 2003 2004 if (big) 2005 pages = (void *)(&scsipi_sense.header.big + 1); 2006 else 2007 pages = (void *)(&scsipi_sense.header.small + 1); 2008 2009 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2010 bits |= DKCACHE_READ; 2011 if (pages->caching_params.flags & CACHING_WCE) 2012 bits |= DKCACHE_WRITE; 2013 if (pages->caching_params.pg_code & PGCODE_PS) 2014 bits |= DKCACHE_SAVE; 2015 2016 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2017 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2018 sizeof(scsipi_sense.pages.caching_params), 2019 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2020 if (error == 0) { 2021 if (big) 2022 pages = (void *)(&scsipi_sense.header.big + 1); 2023 else 2024 pages = (void *)(&scsipi_sense.header.small + 1); 2025 2026 if (pages->caching_params.flags & CACHING_RCD) 2027 bits |= DKCACHE_RCHANGE; 2028 if (pages->caching_params.flags & CACHING_WCE) 2029 bits |= DKCACHE_WCHANGE; 2030 } 2031 2032 *bitsp = bits; 2033 2034 return (0); 2035 } 2036 2037 static int 2038 sd_setcache(struct sd_softc *sd, int bits) 2039 { 2040 struct scsipi_periph *periph = sd->sc_periph; 2041 struct sd_mode_sense_data scsipi_sense; 2042 int error; 2043 uint8_t oflags, byte2 = 0; 2044 int big; 2045 union scsi_disk_pages *pages; 2046 2047 if (periph->periph_version < 2) 2048 return (EOPNOTSUPP); 2049 2050 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2051 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2052 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2053 if (error) 2054 return (error); 2055 2056 if (big) 2057 pages = (void *)(&scsipi_sense.header.big + 1); 2058 else 2059 pages = (void *)(&scsipi_sense.header.small + 1); 2060 2061 oflags = pages->caching_params.flags; 2062 2063 if (bits & DKCACHE_READ) 2064 pages->caching_params.flags &= ~CACHING_RCD; 2065 else 2066 pages->caching_params.flags |= CACHING_RCD; 2067 2068 if (bits & DKCACHE_WRITE) 2069 pages->caching_params.flags |= CACHING_WCE; 2070 else 2071 pages->caching_params.flags &= ~CACHING_WCE; 2072 2073 if (oflags == pages->caching_params.flags) 2074 return (0); 2075 2076 pages->caching_params.pg_code &= PGCODE_MASK; 2077 2078 if (bits & DKCACHE_SAVE) 2079 byte2 |= SMS_SP; 2080 2081 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2082 sizeof(struct scsi_mode_page_header) + 2083 pages->caching_params.pg_length, 0, big)); 2084 } 2085
Indexes created Tue Sep 23 14:10:03 GMT 2025