sd.c revision 1.317.2.2
1 /* $NetBSD: sd.c,v 1.317.2.2 2016/07/19 06:26:59 pgoyette Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Originally written by Julian Elischer (julian (at) dialix.oz.au) 34 * for TRW Financial Systems for use under the MACH(2.5) operating system. 35 * 36 * TRW Financial Systems, in accordance with their agreement with Carnegie 37 * Mellon University, makes this software available to CMU to distribute 38 * or use in any manner that they see fit as long as this message is kept with 39 * the software. For this reason TFS also grants any other persons or 40 * organisations permission to use or modify this software. 41 * 42 * TFS supplies this software to be publicly redistributed 43 * on the understanding that TFS is not responsible for the correct 44 * functioning of this software in any circumstances. 45 * 46 * Ported to run under 386BSD by Julian Elischer (julian (at) dialix.oz.au) Sept 1992 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: sd.c,v 1.317.2.2 2016/07/19 06:26:59 pgoyette Exp $"); 51 52 #ifdef _KERNEL_OPT 53 #include "opt_scsi.h" 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/file.h> 60 #include <sys/stat.h> 61 #include <sys/ioctl.h> 62 #include <sys/scsiio.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/errno.h> 68 #include <sys/device.h> 69 #include <sys/disklabel.h> 70 #include <sys/disk.h> 71 #include <sys/proc.h> 72 #include <sys/conf.h> 73 #include <sys/vnode.h> 74 #include <sys/rndsource.h> 75 #include <sys/localcount.h> 76 77 #include <dev/scsipi/scsi_spc.h> 78 #include <dev/scsipi/scsipi_all.h> 79 #include <dev/scsipi/scsi_all.h> 80 #include <dev/scsipi/scsipi_disk.h> 81 #include <dev/scsipi/scsi_disk.h> 82 #include <dev/scsipi/scsiconf.h> 83 #include <dev/scsipi/scsipi_base.h> 84 #include <dev/scsipi/sdvar.h> 85 86 #include <prop/proplib.h> 87 88 #define SDUNIT(dev) DISKUNIT(dev) 89 #define SDPART(dev) DISKPART(dev) 90 #define SDMINOR(unit, part) DISKMINOR(unit, part) 91 #define MAKESDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 92 93 #define SDLABELDEV(dev) (MAKESDDEV(major(dev), SDUNIT(dev), RAW_PART)) 94 95 #define SD_DEFAULT_BLKSIZE 512 96 97 static void sdminphys(struct buf *); 98 static void sdgetdefaultlabel(struct sd_softc *, struct disklabel *); 99 static int sdgetdisklabel(struct sd_softc *); 100 static void sdstart(struct scsipi_periph *); 101 static void sdrestart(void *); 102 static void sddone(struct scsipi_xfer *, int); 103 static bool sd_suspend(device_t, const pmf_qual_t *); 104 static bool sd_shutdown(device_t, int); 105 static int sd_interpret_sense(struct scsipi_xfer *); 106 static int sdlastclose(device_t); 107 108 static int sd_mode_sense(struct sd_softc *, u_int8_t, void *, size_t, int, 109 int, int *); 110 static int sd_mode_select(struct sd_softc *, u_int8_t, void *, size_t, int, 111 int); 112 static int sd_validate_blksize(struct scsipi_periph *, int); 113 static u_int64_t sd_read_capacity(struct scsipi_periph *, int *, int flags); 114 static int sd_get_simplifiedparms(struct sd_softc *, struct disk_parms *, 115 int); 116 static int sd_get_capacity(struct sd_softc *, struct disk_parms *, int); 117 static int sd_get_parms(struct sd_softc *, struct disk_parms *, int); 118 static int sd_get_parms_page4(struct sd_softc *, struct disk_parms *, 119 int); 120 static int sd_get_parms_page5(struct sd_softc *, struct disk_parms *, 121 int); 122 123 static int sd_flush(struct sd_softc *, int); 124 static int sd_getcache(struct sd_softc *, int *); 125 static int sd_setcache(struct sd_softc *, int); 126 127 static int sdmatch(device_t, cfdata_t, void *); 128 static void sdattach(device_t, device_t, void *); 129 static int sddetach(device_t, int); 130 static void sd_set_geometry(struct sd_softc *); 131 132 CFATTACH_DECL3_NEW(sd, sizeof(struct sd_softc), sdmatch, sdattach, sddetach, 133 NULL, NULL, NULL, DVF_DETACH_SHUTDOWN); 134 135 extern struct cfdriver sd_cd; 136 137 static const struct scsipi_inquiry_pattern sd_patterns[] = { 138 {T_DIRECT, T_FIXED, 139 "", "", ""}, 140 {T_DIRECT, T_REMOV, 141 "", "", ""}, 142 {T_OPTICAL, T_FIXED, 143 "", "", ""}, 144 {T_OPTICAL, T_REMOV, 145 "", "", ""}, 146 {T_SIMPLE_DIRECT, T_FIXED, 147 "", "", ""}, 148 {T_SIMPLE_DIRECT, T_REMOV, 149 "", "", ""}, 150 }; 151 152 static dev_type_open(sdopen); 153 static dev_type_close(sdclose); 154 static dev_type_read(sdread); 155 static dev_type_write(sdwrite); 156 static dev_type_ioctl(sdioctl); 157 static dev_type_strategy(sdstrategy); 158 static dev_type_dump(sddump); 159 static dev_type_size(sdsize); 160 161 const struct bdevsw sd_bdevsw = { 162 LOCALCOUNT_INITIALIZER 163 .d_open = sdopen, 164 .d_close = sdclose, 165 .d_strategy = sdstrategy, 166 .d_ioctl = sdioctl, 167 .d_dump = sddump, 168 .d_psize = sdsize, 169 .d_discard = nodiscard, 170 .d_flag = D_DISK 171 }; 172 173 const struct cdevsw sd_cdevsw = { 174 LOCALCOUNT_INITIALIZER 175 .d_open = sdopen, 176 .d_close = sdclose, 177 .d_read = sdread, 178 .d_write = sdwrite, 179 .d_ioctl = sdioctl, 180 .d_stop = nostop, 181 .d_tty = notty, 182 .d_poll = nopoll, 183 .d_mmap = nommap, 184 .d_kqfilter = nokqfilter, 185 .d_discard = nodiscard, 186 .d_flag = D_DISK 187 }; 188 189 static struct dkdriver sddkdriver = { 190 .d_strategy = sdstrategy, 191 .d_minphys = sdminphys 192 }; 193 194 static const struct scsipi_periphsw sd_switch = { 195 sd_interpret_sense, /* check our error handler first */ 196 sdstart, /* have a queue, served by this */ 197 NULL, /* have no async handler */ 198 sddone, /* deal with stats at interrupt time */ 199 }; 200 201 struct sd_mode_sense_data { 202 /* 203 * XXX 204 * We are not going to parse this as-is -- it just has to be large 205 * enough. 206 */ 207 union { 208 struct scsi_mode_parameter_header_6 small; 209 struct scsi_mode_parameter_header_10 big; 210 } header; 211 struct scsi_general_block_descriptor blk_desc; 212 union scsi_disk_pages pages; 213 }; 214 215 /* 216 * The routine called by the low level scsi routine when it discovers 217 * A device suitable for this driver 218 */ 219 static int 220 sdmatch(device_t parent, cfdata_t match, 221 void *aux) 222 { 223 struct scsipibus_attach_args *sa = aux; 224 int priority; 225 226 (void)scsipi_inqmatch(&sa->sa_inqbuf, 227 sd_patterns, sizeof(sd_patterns) / sizeof(sd_patterns[0]), 228 sizeof(sd_patterns[0]), &priority); 229 230 return (priority); 231 } 232 233 /* 234 * Attach routine common to atapi & scsi. 235 */ 236 static void 237 sdattach(device_t parent, device_t self, void *aux) 238 { 239 struct sd_softc *sd = device_private(self); 240 struct scsipibus_attach_args *sa = aux; 241 struct scsipi_periph *periph = sa->sa_periph; 242 int error, result; 243 struct disk_parms *dp = &sd->params; 244 char pbuf[9]; 245 246 SC_DEBUG(periph, SCSIPI_DB2, ("sdattach: ")); 247 248 sd->sc_dev = self; 249 sd->type = (sa->sa_inqbuf.type & SID_TYPE); 250 strncpy(sd->name, sa->sa_inqbuf.product, sizeof(sd->name)); 251 if (sd->type == T_SIMPLE_DIRECT) 252 periph->periph_quirks |= PQUIRK_ONLYBIG | PQUIRK_NOBIGMODESENSE; 253 254 if (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sa->sa_periph)) == 255 SCSIPI_BUSTYPE_SCSI && periph->periph_version == 0) 256 sd->flags |= SDF_ANCIENT; 257 258 bufq_alloc(&sd->buf_queue, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); 259 260 callout_init(&sd->sc_callout, 0); 261 262 /* 263 * Store information needed to contact our base driver 264 */ 265 sd->sc_periph = periph; 266 267 periph->periph_dev = sd->sc_dev; 268 periph->periph_switch = &sd_switch; 269 270 /* 271 * Increase our openings to the maximum-per-periph 272 * supported by the adapter. This will either be 273 * clamped down or grown by the adapter if necessary. 274 */ 275 periph->periph_openings = 276 SCSIPI_CHAN_MAX_PERIPH(periph->periph_channel); 277 periph->periph_flags |= PERIPH_GROW_OPENINGS; 278 279 /* 280 * Initialize and attach the disk structure. 281 */ 282 disk_init(&sd->sc_dk, device_xname(sd->sc_dev), &sddkdriver); 283 disk_attach(&sd->sc_dk); 284 285 /* 286 * Use the subdriver to request information regarding the drive. 287 */ 288 aprint_naive("\n"); 289 aprint_normal("\n"); 290 291 if (periph->periph_quirks & PQUIRK_START) 292 (void)scsipi_start(periph, SSS_START, XS_CTL_SILENT); 293 294 error = scsipi_test_unit_ready(periph, 295 XS_CTL_DISCOVERY | XS_CTL_IGNORE_ILLEGAL_REQUEST | 296 XS_CTL_IGNORE_MEDIA_CHANGE | XS_CTL_SILENT_NODEV); 297 298 if (error) 299 result = SDGP_RESULT_OFFLINE; 300 else 301 result = sd_get_parms(sd, &sd->params, XS_CTL_DISCOVERY); 302 aprint_normal_dev(sd->sc_dev, ""); 303 switch (result) { 304 case SDGP_RESULT_OK: 305 format_bytes(pbuf, sizeof(pbuf), 306 (u_int64_t)dp->disksize * dp->blksize); 307 aprint_normal( 308 "%s, %ld cyl, %ld head, %ld sec, %ld bytes/sect x %llu sectors", 309 pbuf, dp->cyls, dp->heads, dp->sectors, dp->blksize, 310 (unsigned long long)dp->disksize); 311 break; 312 313 case SDGP_RESULT_OFFLINE: 314 aprint_normal("drive offline"); 315 break; 316 317 case SDGP_RESULT_UNFORMATTED: 318 aprint_normal("unformatted media"); 319 break; 320 321 #ifdef DIAGNOSTIC 322 default: 323 panic("sdattach: unknown result from get_parms"); 324 break; 325 #endif 326 } 327 aprint_normal("\n"); 328 329 /* 330 * Establish a shutdown hook so that we can ensure that 331 * our data has actually made it onto the platter at 332 * shutdown time. Note that this relies on the fact 333 * that the shutdown hooks at the "leaves" of the device tree 334 * are run, first (thus guaranteeing that our hook runs before 335 * our ancestors'). 336 */ 337 if (!pmf_device_register1(self, sd_suspend, NULL, sd_shutdown)) 338 aprint_error_dev(self, "couldn't establish power handler\n"); 339 340 /* 341 * attach the device into the random source list 342 */ 343 rnd_attach_source(&sd->rnd_source, device_xname(sd->sc_dev), 344 RND_TYPE_DISK, RND_FLAG_DEFAULT); 345 346 /* Discover wedges on this disk. */ 347 dkwedge_discover(&sd->sc_dk); 348 349 /* 350 * Disk insertion and removal times can be a useful source 351 * of entropy, though the estimator should never _count_ 352 * these bits, on insertion, because the deltas to the 353 * nonexistent) previous event should never allow it. 354 */ 355 rnd_add_uint32(&sd->rnd_source, 0); 356 } 357 358 static int 359 sddetach(device_t self, int flags) 360 { 361 struct sd_softc *sd = device_private(self); 362 int s, bmaj, cmaj, i, mn, rc; 363 364 rnd_add_uint32(&sd->rnd_source, 0); 365 366 if ((rc = disk_begindetach(&sd->sc_dk, sdlastclose, self, flags)) != 0) 367 return rc; 368 369 /* locate the major number */ 370 bmaj = bdevsw_lookup_major(&sd_bdevsw); 371 cmaj = cdevsw_lookup_major(&sd_cdevsw); 372 373 /* Nuke the vnodes for any open instances */ 374 for (i = 0; i < MAXPARTITIONS; i++) { 375 mn = SDMINOR(device_unit(self), i); 376 vdevgone(bmaj, mn, mn, VBLK); 377 vdevgone(cmaj, mn, mn, VCHR); 378 } 379 380 /* kill any pending restart */ 381 callout_stop(&sd->sc_callout); 382 383 /* Delete all of our wedges. */ 384 dkwedge_delall(&sd->sc_dk); 385 386 s = splbio(); 387 388 /* Kill off any queued buffers. */ 389 bufq_drain(sd->buf_queue); 390 391 bufq_free(sd->buf_queue); 392 393 /* Kill off any pending commands. */ 394 scsipi_kill_pending(sd->sc_periph); 395 396 splx(s); 397 398 /* Detach from the disk list. */ 399 disk_detach(&sd->sc_dk); 400 disk_destroy(&sd->sc_dk); 401 402 callout_destroy(&sd->sc_callout); 403 404 pmf_device_deregister(self); 405 406 /* Unhook the entropy source. */ 407 rnd_detach_source(&sd->rnd_source); 408 409 return (0); 410 } 411 412 /* 413 * open the device. Make sure the partition info is a up-to-date as can be. 414 */ 415 static int 416 sdopen(dev_t dev, int flag, int fmt, struct lwp *l) 417 { 418 struct sd_softc *sd; 419 struct scsipi_periph *periph; 420 struct scsipi_adapter *adapt; 421 int unit, part; 422 int error; 423 424 unit = SDUNIT(dev); 425 sd = device_lookup_private(&sd_cd, unit); 426 if (sd == NULL) 427 return (ENXIO); 428 429 if (!device_is_active(sd->sc_dev)) 430 return (ENODEV); 431 432 part = SDPART(dev); 433 434 mutex_enter(&sd->sc_dk.dk_openlock); 435 436 /* 437 * If there are wedges, and this is not RAW_PART, then we 438 * need to fail. 439 */ 440 if (sd->sc_dk.dk_nwedges != 0 && part != RAW_PART) { 441 error = EBUSY; 442 goto bad1; 443 } 444 445 periph = sd->sc_periph; 446 adapt = periph->periph_channel->chan_adapter; 447 448 SC_DEBUG(periph, SCSIPI_DB1, 449 ("sdopen: dev=0x%"PRIx64" (unit %d (of %d), partition %d)\n", dev, unit, 450 sd_cd.cd_ndevs, part)); 451 452 /* 453 * If this is the first open of this device, add a reference 454 * to the adapter. 455 */ 456 if (sd->sc_dk.dk_openmask == 0 && 457 (error = scsipi_adapter_addref(adapt)) != 0) 458 goto bad1; 459 460 if ((periph->periph_flags & PERIPH_OPEN) != 0) { 461 /* 462 * If any partition is open, but the disk has been invalidated, 463 * disallow further opens of non-raw partition 464 */ 465 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 && 466 (part != RAW_PART || fmt != S_IFCHR)) { 467 error = EIO; 468 goto bad2; 469 } 470 } else { 471 int silent; 472 473 if ((part == RAW_PART && fmt == S_IFCHR) || (flag & FSILENT)) 474 silent = XS_CTL_SILENT; 475 else 476 silent = 0; 477 478 /* Check that it is still responding and ok. */ 479 error = scsipi_test_unit_ready(periph, 480 XS_CTL_IGNORE_ILLEGAL_REQUEST | XS_CTL_IGNORE_MEDIA_CHANGE | 481 silent); 482 483 /* 484 * Start the pack spinning if necessary. Always allow the 485 * raw parition to be opened, for raw IOCTLs. Data transfers 486 * will check for SDEV_MEDIA_LOADED. 487 */ 488 if (error == EIO) { 489 int error2; 490 491 error2 = scsipi_start(periph, SSS_START, silent); 492 switch (error2) { 493 case 0: 494 error = 0; 495 break; 496 case EIO: 497 case EINVAL: 498 break; 499 default: 500 error = error2; 501 break; 502 } 503 } 504 if (error) { 505 if (silent && (flag & FSILENT) == 0) 506 goto out; 507 goto bad2; 508 } 509 510 periph->periph_flags |= PERIPH_OPEN; 511 512 if (periph->periph_flags & PERIPH_REMOVABLE) { 513 /* Lock the pack in. */ 514 error = scsipi_prevent(periph, SPAMR_PREVENT_DT, 515 XS_CTL_IGNORE_ILLEGAL_REQUEST | 516 XS_CTL_IGNORE_MEDIA_CHANGE | 517 XS_CTL_SILENT); 518 if (error) 519 goto bad3; 520 } 521 522 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 523 int param_error; 524 periph->periph_flags |= PERIPH_MEDIA_LOADED; 525 526 /* 527 * Load the physical device parameters. 528 * 529 * Note that if media is present but unformatted, 530 * we allow the open (so that it can be formatted!). 531 * The drive should refuse real I/O, if the media is 532 * unformatted. 533 */ 534 if ((param_error = sd_get_parms(sd, &sd->params, 0)) 535 == SDGP_RESULT_OFFLINE) { 536 error = ENXIO; 537 periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 538 goto bad3; 539 } 540 SC_DEBUG(periph, SCSIPI_DB3, ("Params loaded ")); 541 542 /* Load the partition info if not already loaded. */ 543 if (param_error == 0) { 544 if ((sdgetdisklabel(sd) != 0) && (part != RAW_PART)) { 545 error = EIO; 546 goto bad3; 547 } 548 SC_DEBUG(periph, SCSIPI_DB3, 549 ("Disklabel loaded ")); 550 } 551 } 552 } 553 554 /* Check that the partition exists. */ 555 if (part != RAW_PART && 556 (part >= sd->sc_dk.dk_label->d_npartitions || 557 sd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 558 error = ENXIO; 559 goto bad3; 560 } 561 562 out: /* Insure only one open at a time. */ 563 switch (fmt) { 564 case S_IFCHR: 565 sd->sc_dk.dk_copenmask |= (1 << part); 566 break; 567 case S_IFBLK: 568 sd->sc_dk.dk_bopenmask |= (1 << part); 569 break; 570 } 571 sd->sc_dk.dk_openmask = 572 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 573 574 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 575 mutex_exit(&sd->sc_dk.dk_openlock); 576 return (0); 577 578 bad3: 579 if (sd->sc_dk.dk_openmask == 0) { 580 if (periph->periph_flags & PERIPH_REMOVABLE) 581 scsipi_prevent(periph, SPAMR_ALLOW, 582 XS_CTL_IGNORE_ILLEGAL_REQUEST | 583 XS_CTL_IGNORE_MEDIA_CHANGE | 584 XS_CTL_SILENT); 585 periph->periph_flags &= ~PERIPH_OPEN; 586 } 587 588 bad2: 589 if (sd->sc_dk.dk_openmask == 0) 590 scsipi_adapter_delref(adapt); 591 592 bad1: 593 mutex_exit(&sd->sc_dk.dk_openlock); 594 return (error); 595 } 596 597 /* 598 * Caller must hold sd->sc_dk.dk_openlock. 599 */ 600 static int 601 sdlastclose(device_t self) 602 { 603 struct sd_softc *sd = device_private(self); 604 struct scsipi_periph *periph = sd->sc_periph; 605 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 606 607 /* 608 * If the disk cache needs flushing, and the disk supports 609 * it, do it now. 610 */ 611 if ((sd->flags & SDF_DIRTY) != 0) { 612 if (sd_flush(sd, 0)) { 613 aprint_error_dev(sd->sc_dev, 614 "cache synchronization failed\n"); 615 sd->flags &= ~SDF_FLUSHING; 616 } else 617 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 618 } 619 620 scsipi_wait_drain(periph); 621 622 if (periph->periph_flags & PERIPH_REMOVABLE) 623 scsipi_prevent(periph, SPAMR_ALLOW, 624 XS_CTL_IGNORE_ILLEGAL_REQUEST | 625 XS_CTL_IGNORE_NOT_READY | 626 XS_CTL_SILENT); 627 periph->periph_flags &= ~PERIPH_OPEN; 628 629 scsipi_wait_drain(periph); 630 631 scsipi_adapter_delref(adapt); 632 633 return 0; 634 } 635 636 /* 637 * close the device.. only called if we are the LAST occurence of an open 638 * device. Convenient now but usually a pain. 639 */ 640 static int 641 sdclose(dev_t dev, int flag, int fmt, struct lwp *l) 642 { 643 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 644 int part = SDPART(dev); 645 646 mutex_enter(&sd->sc_dk.dk_openlock); 647 switch (fmt) { 648 case S_IFCHR: 649 sd->sc_dk.dk_copenmask &= ~(1 << part); 650 break; 651 case S_IFBLK: 652 sd->sc_dk.dk_bopenmask &= ~(1 << part); 653 break; 654 } 655 sd->sc_dk.dk_openmask = 656 sd->sc_dk.dk_copenmask | sd->sc_dk.dk_bopenmask; 657 658 if (sd->sc_dk.dk_openmask == 0) 659 sdlastclose(sd->sc_dev); 660 661 mutex_exit(&sd->sc_dk.dk_openlock); 662 return (0); 663 } 664 665 /* 666 * Actually translate the requested transfer into one the physical driver 667 * can understand. The transfer is described by a buf and will include 668 * only one physical transfer. 669 */ 670 static void 671 sdstrategy(struct buf *bp) 672 { 673 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 674 struct scsipi_periph *periph = sd->sc_periph; 675 struct disklabel *lp; 676 daddr_t blkno; 677 int s; 678 bool sector_aligned; 679 680 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdstrategy ")); 681 SC_DEBUG(sd->sc_periph, SCSIPI_DB1, 682 ("%d bytes @ blk %" PRId64 "\n", bp->b_bcount, bp->b_blkno)); 683 /* 684 * If the device has been made invalid, error out 685 */ 686 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0 || 687 !device_is_active(sd->sc_dev)) { 688 if (periph->periph_flags & PERIPH_OPEN) 689 bp->b_error = EIO; 690 else 691 bp->b_error = ENODEV; 692 goto done; 693 } 694 695 lp = sd->sc_dk.dk_label; 696 697 /* 698 * The transfer must be a whole number of blocks, offset must not be 699 * negative. 700 */ 701 if (lp->d_secsize == DEV_BSIZE) { 702 sector_aligned = (bp->b_bcount & (DEV_BSIZE - 1)) == 0; 703 } else { 704 sector_aligned = (bp->b_bcount % lp->d_secsize) == 0; 705 } 706 if (!sector_aligned || bp->b_blkno < 0) { 707 bp->b_error = EINVAL; 708 goto done; 709 } 710 /* 711 * If it's a null transfer, return immediatly 712 */ 713 if (bp->b_bcount == 0) 714 goto done; 715 716 /* 717 * Do bounds checking, adjust transfer. if error, process. 718 * If end of partition, just return. 719 */ 720 if (SDPART(bp->b_dev) == RAW_PART) { 721 if (bounds_check_with_mediasize(bp, DEV_BSIZE, 722 sd->params.disksize512) <= 0) 723 goto done; 724 } else { 725 if (bounds_check_with_label(&sd->sc_dk, bp, 726 (sd->flags & (SDF_WLABEL|SDF_LABELLING)) != 0) <= 0) 727 goto done; 728 } 729 730 /* 731 * Now convert the block number to absolute and put it in 732 * terms of the device's logical block size. 733 */ 734 if (lp->d_secsize == DEV_BSIZE) 735 blkno = bp->b_blkno; 736 else if (lp->d_secsize > DEV_BSIZE) 737 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 738 else 739 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 740 741 if (SDPART(bp->b_dev) != RAW_PART) 742 blkno += lp->d_partitions[SDPART(bp->b_dev)].p_offset; 743 744 bp->b_rawblkno = blkno; 745 746 s = splbio(); 747 748 /* 749 * Place it in the queue of disk activities for this disk. 750 * 751 * XXX Only do disksort() if the current operating mode does not 752 * XXX include tagged queueing. 753 */ 754 bufq_put(sd->buf_queue, bp); 755 756 /* 757 * Tell the device to get going on the transfer if it's 758 * not doing anything, otherwise just wait for completion 759 */ 760 sdstart(sd->sc_periph); 761 762 splx(s); 763 return; 764 765 done: 766 /* 767 * Correctly set the buf to indicate a completed xfer 768 */ 769 bp->b_resid = bp->b_bcount; 770 biodone(bp); 771 } 772 773 /* 774 * sdstart looks to see if there is a buf waiting for the device 775 * and that the device is not already busy. If both are true, 776 * It dequeues the buf and creates a scsi command to perform the 777 * transfer in the buf. The transfer request will call scsipi_done 778 * on completion, which will in turn call this routine again 779 * so that the next queued transfer is performed. 780 * The bufs are queued by the strategy routine (sdstrategy) 781 * 782 * This routine is also called after other non-queued requests 783 * have been made of the scsi driver, to ensure that the queue 784 * continues to be drained. 785 * 786 * must be called at the correct (highish) spl level 787 * sdstart() is called at splbio from sdstrategy, sdrestart and scsipi_done 788 */ 789 static void 790 sdstart(struct scsipi_periph *periph) 791 { 792 struct sd_softc *sd = device_private(periph->periph_dev); 793 struct disklabel *lp = sd->sc_dk.dk_label; 794 struct buf *bp = 0; 795 struct scsipi_rw_16 cmd16; 796 struct scsipi_rw_10 cmd_big; 797 struct scsi_rw_6 cmd_small; 798 struct scsipi_generic *cmdp; 799 struct scsipi_xfer *xs; 800 int nblks, cmdlen, error __diagused, flags; 801 802 SC_DEBUG(periph, SCSIPI_DB2, ("sdstart ")); 803 /* 804 * Check if the device has room for another command 805 */ 806 while (periph->periph_active < periph->periph_openings) { 807 /* 808 * there is excess capacity, but a special waits 809 * It'll need the adapter as soon as we clear out of the 810 * way and let it run (user level wait). 811 */ 812 if (periph->periph_flags & PERIPH_WAITING) { 813 periph->periph_flags &= ~PERIPH_WAITING; 814 wakeup((void *)periph); 815 return; 816 } 817 818 /* 819 * If the device has become invalid, abort all the 820 * reads and writes until all files have been closed and 821 * re-opened 822 */ 823 if (__predict_false( 824 (periph->periph_flags & PERIPH_MEDIA_LOADED) == 0)) { 825 if ((bp = bufq_get(sd->buf_queue)) != NULL) { 826 bp->b_error = EIO; 827 bp->b_resid = bp->b_bcount; 828 biodone(bp); 829 continue; 830 } else { 831 return; 832 } 833 } 834 835 /* 836 * See if there is a buf with work for us to do.. 837 */ 838 if ((bp = bufq_peek(sd->buf_queue)) == NULL) 839 return; 840 841 /* 842 * We have a buf, now we should make a command. 843 */ 844 845 if (lp->d_secsize == DEV_BSIZE) 846 nblks = bp->b_bcount >> DEV_BSHIFT; 847 else 848 nblks = howmany(bp->b_bcount, lp->d_secsize); 849 850 /* 851 * Fill out the scsi command. Use the smallest CDB possible 852 * (6-byte, 10-byte, or 16-byte). 853 */ 854 if (((bp->b_rawblkno & 0x1fffff) == bp->b_rawblkno) && 855 ((nblks & 0xff) == nblks) && 856 !(periph->periph_quirks & PQUIRK_ONLYBIG)) { 857 /* 6-byte CDB */ 858 memset(&cmd_small, 0, sizeof(cmd_small)); 859 cmd_small.opcode = (bp->b_flags & B_READ) ? 860 SCSI_READ_6_COMMAND : SCSI_WRITE_6_COMMAND; 861 _lto3b(bp->b_rawblkno, cmd_small.addr); 862 cmd_small.length = nblks & 0xff; 863 cmdlen = sizeof(cmd_small); 864 cmdp = (struct scsipi_generic *)&cmd_small; 865 } else if ((bp->b_rawblkno & 0xffffffff) == bp->b_rawblkno) { 866 /* 10-byte CDB */ 867 memset(&cmd_big, 0, sizeof(cmd_big)); 868 cmd_big.opcode = (bp->b_flags & B_READ) ? 869 READ_10 : WRITE_10; 870 _lto4b(bp->b_rawblkno, cmd_big.addr); 871 _lto2b(nblks, cmd_big.length); 872 cmdlen = sizeof(cmd_big); 873 cmdp = (struct scsipi_generic *)&cmd_big; 874 } else { 875 /* 16-byte CDB */ 876 memset(&cmd16, 0, sizeof(cmd16)); 877 cmd16.opcode = (bp->b_flags & B_READ) ? 878 READ_16 : WRITE_16; 879 _lto8b(bp->b_rawblkno, cmd16.addr); 880 _lto4b(nblks, cmd16.length); 881 cmdlen = sizeof(cmd16); 882 cmdp = (struct scsipi_generic *)&cmd16; 883 } 884 885 /* Instrumentation. */ 886 disk_busy(&sd->sc_dk); 887 888 /* 889 * Mark the disk dirty so that the cache will be 890 * flushed on close. 891 */ 892 if ((bp->b_flags & B_READ) == 0) 893 sd->flags |= SDF_DIRTY; 894 895 /* 896 * Figure out what flags to use. 897 */ 898 flags = XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_SIMPLE_TAG; 899 if (bp->b_flags & B_READ) 900 flags |= XS_CTL_DATA_IN; 901 else 902 flags |= XS_CTL_DATA_OUT; 903 904 /* 905 * Call the routine that chats with the adapter. 906 * Note: we cannot sleep as we may be an interrupt 907 */ 908 xs = scsipi_make_xs(periph, cmdp, cmdlen, 909 (u_char *)bp->b_data, bp->b_bcount, 910 SDRETRIES, SD_IO_TIMEOUT, bp, flags); 911 if (__predict_false(xs == NULL)) { 912 /* 913 * out of memory. Keep this buffer in the queue, and 914 * retry later. 915 */ 916 callout_reset(&sd->sc_callout, hz / 2, sdrestart, 917 periph); 918 return; 919 } 920 /* 921 * need to dequeue the buffer before queuing the command, 922 * because cdstart may be called recursively from the 923 * HBA driver 924 */ 925 #ifdef DIAGNOSTIC 926 if (bufq_get(sd->buf_queue) != bp) 927 panic("sdstart(): dequeued wrong buf"); 928 #else 929 bufq_get(sd->buf_queue); 930 #endif 931 error = scsipi_execute_xs(xs); 932 /* with a scsipi_xfer preallocated, scsipi_command can't fail */ 933 KASSERT(error == 0); 934 } 935 } 936 937 static void 938 sdrestart(void *v) 939 { 940 int s = splbio(); 941 sdstart((struct scsipi_periph *)v); 942 splx(s); 943 } 944 945 static void 946 sddone(struct scsipi_xfer *xs, int error) 947 { 948 struct sd_softc *sd = device_private(xs->xs_periph->periph_dev); 949 struct buf *bp = xs->bp; 950 951 if (sd->flags & SDF_FLUSHING) { 952 /* Flush completed, no longer dirty. */ 953 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 954 } 955 956 if (bp) { 957 bp->b_error = error; 958 bp->b_resid = xs->resid; 959 if (error) { 960 /* on a read/write error bp->b_resid is zero, so fix */ 961 bp->b_resid = bp->b_bcount; 962 } 963 964 disk_unbusy(&sd->sc_dk, bp->b_bcount - bp->b_resid, 965 (bp->b_flags & B_READ)); 966 rnd_add_uint32(&sd->rnd_source, bp->b_rawblkno); 967 968 biodone(bp); 969 } 970 } 971 972 static void 973 sdminphys(struct buf *bp) 974 { 975 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(bp->b_dev)); 976 long xmax; 977 978 /* 979 * If the device is ancient, we want to make sure that 980 * the transfer fits into a 6-byte cdb. 981 * 982 * XXX Note that the SCSI-I spec says that 256-block transfers 983 * are allowed in a 6-byte read/write, and are specified 984 * by settng the "length" to 0. However, we're conservative 985 * here, allowing only 255-block transfers in case an 986 * ancient device gets confused by length == 0. A length of 0 987 * in a 10-byte read/write actually means 0 blocks. 988 */ 989 if ((sd->flags & SDF_ANCIENT) && 990 ((sd->sc_periph->periph_flags & 991 (PERIPH_REMOVABLE | PERIPH_MEDIA_LOADED)) != PERIPH_REMOVABLE)) { 992 xmax = sd->sc_dk.dk_label->d_secsize * 0xff; 993 994 if (bp->b_bcount > xmax) 995 bp->b_bcount = xmax; 996 } 997 998 scsipi_adapter_minphys(sd->sc_periph->periph_channel, bp); 999 } 1000 1001 static int 1002 sdread(dev_t dev, struct uio *uio, int ioflag) 1003 { 1004 1005 return (physio(sdstrategy, NULL, dev, B_READ, sdminphys, uio)); 1006 } 1007 1008 static int 1009 sdwrite(dev_t dev, struct uio *uio, int ioflag) 1010 { 1011 1012 return (physio(sdstrategy, NULL, dev, B_WRITE, sdminphys, uio)); 1013 } 1014 1015 /* 1016 * Perform special action on behalf of the user 1017 * Knows about the internals of this device 1018 */ 1019 static int 1020 sdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1021 { 1022 struct sd_softc *sd = device_lookup_private(&sd_cd, SDUNIT(dev)); 1023 struct scsipi_periph *periph = sd->sc_periph; 1024 int part = SDPART(dev); 1025 int error; 1026 int s; 1027 #ifdef __HAVE_OLD_DISKLABEL 1028 struct disklabel *newlabel = NULL; 1029 #endif 1030 1031 SC_DEBUG(sd->sc_periph, SCSIPI_DB2, ("sdioctl 0x%lx ", cmd)); 1032 1033 /* 1034 * If the device is not valid, some IOCTLs can still be 1035 * handled on the raw partition. Check this here. 1036 */ 1037 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) { 1038 switch (cmd) { 1039 case DIOCKLABEL: 1040 case DIOCWLABEL: 1041 case DIOCLOCK: 1042 case DIOCEJECT: 1043 case ODIOCEJECT: 1044 case DIOCGCACHE: 1045 case DIOCSCACHE: 1046 case DIOCGSTRATEGY: 1047 case DIOCSSTRATEGY: 1048 case SCIOCIDENTIFY: 1049 case OSCIOCIDENTIFY: 1050 case SCIOCCOMMAND: 1051 case SCIOCDEBUG: 1052 if (part == RAW_PART) 1053 break; 1054 /* FALLTHROUGH */ 1055 default: 1056 if ((periph->periph_flags & PERIPH_OPEN) == 0) 1057 return (ENODEV); 1058 else 1059 return (EIO); 1060 } 1061 } 1062 1063 error = disk_ioctl(&sd->sc_dk, dev, cmd, addr, flag, l); 1064 if (error != EPASSTHROUGH) 1065 return (error); 1066 1067 error = 0; 1068 switch (cmd) { 1069 case DIOCWDINFO: 1070 case DIOCSDINFO: 1071 #ifdef __HAVE_OLD_DISKLABEL 1072 case ODIOCWDINFO: 1073 case ODIOCSDINFO: 1074 #endif 1075 { 1076 struct disklabel *lp; 1077 1078 if ((flag & FWRITE) == 0) 1079 return (EBADF); 1080 1081 #ifdef __HAVE_OLD_DISKLABEL 1082 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1083 newlabel = malloc(sizeof *newlabel, M_TEMP, 1084 M_WAITOK | M_ZERO); 1085 if (newlabel == NULL) 1086 return EIO; 1087 memcpy(newlabel, addr, sizeof (struct olddisklabel)); 1088 lp = newlabel; 1089 } else 1090 #endif 1091 lp = (struct disklabel *)addr; 1092 1093 mutex_enter(&sd->sc_dk.dk_openlock); 1094 sd->flags |= SDF_LABELLING; 1095 1096 error = setdisklabel(sd->sc_dk.dk_label, 1097 lp, /*sd->sc_dk.dk_openmask : */0, 1098 sd->sc_dk.dk_cpulabel); 1099 if (error == 0) { 1100 if (cmd == DIOCWDINFO 1101 #ifdef __HAVE_OLD_DISKLABEL 1102 || cmd == ODIOCWDINFO 1103 #endif 1104 ) 1105 error = writedisklabel(SDLABELDEV(dev), 1106 sdstrategy, sd->sc_dk.dk_label, 1107 sd->sc_dk.dk_cpulabel); 1108 } 1109 1110 sd->flags &= ~SDF_LABELLING; 1111 mutex_exit(&sd->sc_dk.dk_openlock); 1112 #ifdef __HAVE_OLD_DISKLABEL 1113 if (newlabel != NULL) 1114 free(newlabel, M_TEMP); 1115 #endif 1116 return (error); 1117 } 1118 1119 case DIOCKLABEL: 1120 if (*(int *)addr) 1121 periph->periph_flags |= PERIPH_KEEP_LABEL; 1122 else 1123 periph->periph_flags &= ~PERIPH_KEEP_LABEL; 1124 return (0); 1125 1126 case DIOCWLABEL: 1127 if ((flag & FWRITE) == 0) 1128 return (EBADF); 1129 if (*(int *)addr) 1130 sd->flags |= SDF_WLABEL; 1131 else 1132 sd->flags &= ~SDF_WLABEL; 1133 return (0); 1134 1135 case DIOCLOCK: 1136 if (periph->periph_flags & PERIPH_REMOVABLE) 1137 return (scsipi_prevent(periph, 1138 (*(int *)addr) ? 1139 SPAMR_PREVENT_DT : SPAMR_ALLOW, 0)); 1140 else 1141 return (ENOTTY); 1142 1143 case DIOCEJECT: 1144 if ((periph->periph_flags & PERIPH_REMOVABLE) == 0) 1145 return (ENOTTY); 1146 if (*(int *)addr == 0) { 1147 /* 1148 * Don't force eject: check that we are the only 1149 * partition open. If so, unlock it. 1150 */ 1151 if ((sd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 1152 sd->sc_dk.dk_bopenmask + sd->sc_dk.dk_copenmask == 1153 sd->sc_dk.dk_openmask) { 1154 error = scsipi_prevent(periph, SPAMR_ALLOW, 1155 XS_CTL_IGNORE_NOT_READY); 1156 if (error) 1157 return (error); 1158 } else { 1159 return (EBUSY); 1160 } 1161 } 1162 /* FALLTHROUGH */ 1163 case ODIOCEJECT: 1164 return ((periph->periph_flags & PERIPH_REMOVABLE) == 0 ? 1165 ENOTTY : scsipi_start(periph, SSS_STOP|SSS_LOEJ, 0)); 1166 1167 case DIOCGDEFLABEL: 1168 sdgetdefaultlabel(sd, (struct disklabel *)addr); 1169 return (0); 1170 1171 #ifdef __HAVE_OLD_DISKLABEL 1172 case ODIOCGDEFLABEL: 1173 newlabel = malloc(sizeof *newlabel, M_TEMP, M_WAITOK); 1174 if (newlabel == NULL) 1175 return EIO; 1176 sdgetdefaultlabel(sd, newlabel); 1177 if (newlabel->d_npartitions <= OLDMAXPARTITIONS) 1178 memcpy(addr, newlabel, sizeof (struct olddisklabel)); 1179 else 1180 error = ENOTTY; 1181 free(newlabel, M_TEMP); 1182 return error; 1183 #endif 1184 1185 case DIOCGCACHE: 1186 return (sd_getcache(sd, (int *) addr)); 1187 1188 case DIOCSCACHE: 1189 if ((flag & FWRITE) == 0) 1190 return (EBADF); 1191 return (sd_setcache(sd, *(int *) addr)); 1192 1193 case DIOCCACHESYNC: 1194 /* 1195 * XXX Do we really need to care about having a writable 1196 * file descriptor here? 1197 */ 1198 if ((flag & FWRITE) == 0) 1199 return (EBADF); 1200 if (((sd->flags & SDF_DIRTY) != 0 || *(int *)addr != 0)) { 1201 error = sd_flush(sd, 0); 1202 if (error) 1203 sd->flags &= ~SDF_FLUSHING; 1204 else 1205 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1206 } 1207 return (error); 1208 1209 case DIOCGSTRATEGY: 1210 { 1211 struct disk_strategy *dks = addr; 1212 1213 s = splbio(); 1214 strlcpy(dks->dks_name, bufq_getstrategyname(sd->buf_queue), 1215 sizeof(dks->dks_name)); 1216 splx(s); 1217 dks->dks_paramlen = 0; 1218 1219 return 0; 1220 } 1221 1222 case DIOCSSTRATEGY: 1223 { 1224 struct disk_strategy *dks = addr; 1225 struct bufq_state *new_bufq; 1226 struct bufq_state *old_bufq; 1227 1228 if ((flag & FWRITE) == 0) { 1229 return EBADF; 1230 } 1231 1232 if (dks->dks_param != NULL) { 1233 return EINVAL; 1234 } 1235 dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ 1236 error = bufq_alloc(&new_bufq, dks->dks_name, 1237 BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); 1238 if (error) { 1239 return error; 1240 } 1241 s = splbio(); 1242 old_bufq = sd->buf_queue; 1243 bufq_move(new_bufq, old_bufq); 1244 sd->buf_queue = new_bufq; 1245 splx(s); 1246 bufq_free(old_bufq); 1247 1248 return 0; 1249 } 1250 1251 default: 1252 if (part != RAW_PART) 1253 return (ENOTTY); 1254 return (scsipi_do_ioctl(periph, dev, cmd, addr, flag, l)); 1255 } 1256 1257 #ifdef DIAGNOSTIC 1258 panic("sdioctl: impossible"); 1259 #endif 1260 } 1261 1262 static void 1263 sdgetdefaultlabel(struct sd_softc *sd, struct disklabel *lp) 1264 { 1265 1266 memset(lp, 0, sizeof(struct disklabel)); 1267 1268 lp->d_secsize = sd->params.blksize; 1269 lp->d_ntracks = sd->params.heads; 1270 lp->d_nsectors = sd->params.sectors; 1271 lp->d_ncylinders = sd->params.cyls; 1272 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1273 1274 switch (SCSIPI_BUSTYPE_TYPE(scsipi_periph_bustype(sd->sc_periph))) { 1275 case SCSIPI_BUSTYPE_SCSI: 1276 lp->d_type = DKTYPE_SCSI; 1277 break; 1278 case SCSIPI_BUSTYPE_ATAPI: 1279 lp->d_type = DKTYPE_ATAPI; 1280 break; 1281 } 1282 /* 1283 * XXX 1284 * We could probe the mode pages to figure out what kind of disc it is. 1285 * Is this worthwhile? 1286 */ 1287 strncpy(lp->d_typename, sd->name, 16); 1288 strncpy(lp->d_packname, "fictitious", 16); 1289 if (sd->params.disksize > UINT32_MAX) 1290 lp->d_secperunit = UINT32_MAX; 1291 else 1292 lp->d_secperunit = sd->params.disksize; 1293 lp->d_rpm = sd->params.rot_rate; 1294 lp->d_interleave = 1; 1295 lp->d_flags = sd->sc_periph->periph_flags & PERIPH_REMOVABLE ? 1296 D_REMOVABLE : 0; 1297 1298 lp->d_partitions[RAW_PART].p_offset = 0; 1299 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 1300 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1301 lp->d_npartitions = RAW_PART + 1; 1302 1303 lp->d_magic = DISKMAGIC; 1304 lp->d_magic2 = DISKMAGIC; 1305 lp->d_checksum = dkcksum(lp); 1306 } 1307 1308 1309 /* 1310 * Load the label information on the named device 1311 */ 1312 static int 1313 sdgetdisklabel(struct sd_softc *sd) 1314 { 1315 struct disklabel *lp = sd->sc_dk.dk_label; 1316 const char *errstring; 1317 1318 memset(sd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 1319 1320 sdgetdefaultlabel(sd, lp); 1321 1322 if (lp->d_secpercyl == 0) { 1323 lp->d_secpercyl = 100; 1324 /* as long as it's not 0 - readdisklabel divides by it (?) */ 1325 } 1326 1327 /* 1328 * Call the generic disklabel extraction routine 1329 */ 1330 errstring = readdisklabel(MAKESDDEV(0, device_unit(sd->sc_dev), 1331 RAW_PART), sdstrategy, lp, sd->sc_dk.dk_cpulabel); 1332 if (errstring) { 1333 aprint_error_dev(sd->sc_dev, "%s\n", errstring); 1334 return EIO; 1335 } 1336 return 0; 1337 } 1338 1339 static bool 1340 sd_shutdown(device_t self, int how) 1341 { 1342 struct sd_softc *sd = device_private(self); 1343 1344 /* 1345 * If the disk cache needs to be flushed, and the disk supports 1346 * it, flush it. We're cold at this point, so we poll for 1347 * completion. 1348 */ 1349 if ((sd->flags & SDF_DIRTY) != 0) { 1350 if (sd_flush(sd, XS_CTL_NOSLEEP|XS_CTL_POLL)) { 1351 aprint_error_dev(sd->sc_dev, 1352 "cache synchronization failed\n"); 1353 sd->flags &= ~SDF_FLUSHING; 1354 } else 1355 sd->flags &= ~(SDF_FLUSHING|SDF_DIRTY); 1356 } 1357 return true; 1358 } 1359 1360 static bool 1361 sd_suspend(device_t dv, const pmf_qual_t *qual) 1362 { 1363 return sd_shutdown(dv, boothowto); /* XXX no need to poll */ 1364 } 1365 1366 /* 1367 * Check Errors 1368 */ 1369 static int 1370 sd_interpret_sense(struct scsipi_xfer *xs) 1371 { 1372 struct scsipi_periph *periph = xs->xs_periph; 1373 struct scsi_sense_data *sense = &xs->sense.scsi_sense; 1374 struct sd_softc *sd = device_private(periph->periph_dev); 1375 int s, error, retval = EJUSTRETURN; 1376 1377 /* 1378 * If the periph is already recovering, just do the normal 1379 * error processing. 1380 */ 1381 if (periph->periph_flags & PERIPH_RECOVERING) 1382 return (retval); 1383 1384 /* 1385 * Ignore errors from accessing illegal fields (e.g. trying to 1386 * lock the door of a digicam, which doesn't have a door that 1387 * can be locked) for the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command. 1388 */ 1389 if (xs->cmd->opcode == SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL && 1390 SSD_SENSE_KEY(sense->flags) == SKEY_ILLEGAL_REQUEST && 1391 sense->asc == 0x24 && 1392 sense->ascq == 0x00) { /* Illegal field in CDB */ 1393 if (!(xs->xs_control & XS_CTL_SILENT)) { 1394 scsipi_printaddr(periph); 1395 printf("no door lock\n"); 1396 } 1397 xs->xs_control |= XS_CTL_IGNORE_ILLEGAL_REQUEST; 1398 return (retval); 1399 } 1400 1401 1402 1403 /* 1404 * If the device is not open yet, let the generic code handle it. 1405 */ 1406 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1407 return (retval); 1408 1409 /* 1410 * If it isn't a extended or extended/deferred error, let 1411 * the generic code handle it. 1412 */ 1413 if (SSD_RCODE(sense->response_code) != SSD_RCODE_CURRENT && 1414 SSD_RCODE(sense->response_code) != SSD_RCODE_DEFERRED) 1415 return (retval); 1416 1417 if (SSD_SENSE_KEY(sense->flags) == SKEY_NOT_READY && 1418 sense->asc == 0x4) { 1419 if (sense->ascq == 0x01) { 1420 /* 1421 * Unit In The Process Of Becoming Ready. 1422 */ 1423 printf("%s: waiting for pack to spin up...\n", 1424 device_xname(sd->sc_dev)); 1425 if (!callout_pending(&periph->periph_callout)) 1426 scsipi_periph_freeze(periph, 1); 1427 callout_reset(&periph->periph_callout, 1428 5 * hz, scsipi_periph_timed_thaw, periph); 1429 retval = ERESTART; 1430 } else if (sense->ascq == 0x02) { 1431 printf("%s: pack is stopped, restarting...\n", 1432 device_xname(sd->sc_dev)); 1433 s = splbio(); 1434 periph->periph_flags |= PERIPH_RECOVERING; 1435 splx(s); 1436 error = scsipi_start(periph, SSS_START, 1437 XS_CTL_URGENT|XS_CTL_HEAD_TAG| 1438 XS_CTL_THAW_PERIPH|XS_CTL_FREEZE_PERIPH); 1439 if (error) { 1440 aprint_error_dev(sd->sc_dev, 1441 "unable to restart pack\n"); 1442 retval = error; 1443 } else 1444 retval = ERESTART; 1445 s = splbio(); 1446 periph->periph_flags &= ~PERIPH_RECOVERING; 1447 splx(s); 1448 } 1449 } 1450 if (SSD_SENSE_KEY(sense->flags) == SKEY_MEDIUM_ERROR && 1451 sense->asc == 0x31 && 1452 sense->ascq == 0x00) { /* maybe for any asq ? */ 1453 /* Medium Format Corrupted */ 1454 retval = EFTYPE; 1455 } 1456 return (retval); 1457 } 1458 1459 1460 static int 1461 sdsize(dev_t dev) 1462 { 1463 struct sd_softc *sd; 1464 int part, unit, omask; 1465 int size; 1466 1467 unit = SDUNIT(dev); 1468 sd = device_lookup_private(&sd_cd, unit); 1469 if (sd == NULL) 1470 return (-1); 1471 1472 if (!device_is_active(sd->sc_dev)) 1473 return (-1); 1474 1475 part = SDPART(dev); 1476 omask = sd->sc_dk.dk_openmask & (1 << part); 1477 1478 if (omask == 0 && sdopen(dev, 0, S_IFBLK, NULL) != 0) 1479 return (-1); 1480 if ((sd->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1481 size = -1; 1482 else if (sd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1483 size = -1; 1484 else 1485 size = sd->sc_dk.dk_label->d_partitions[part].p_size * 1486 (sd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1487 if (omask == 0 && sdclose(dev, 0, S_IFBLK, NULL) != 0) 1488 return (-1); 1489 return (size); 1490 } 1491 1492 /* #define SD_DUMP_NOT_TRUSTED if you just want to watch */ 1493 static struct scsipi_xfer sx; 1494 static int sddoingadump; 1495 1496 /* 1497 * dump all of physical memory into the partition specified, starting 1498 * at offset 'dumplo' into the partition. 1499 */ 1500 static int 1501 sddump(dev_t dev, daddr_t blkno, void *va, size_t size) 1502 { 1503 struct sd_softc *sd; /* disk unit to do the I/O */ 1504 struct disklabel *lp; /* disk's disklabel */ 1505 int unit, part; 1506 int sectorsize; /* size of a disk sector */ 1507 int nsects; /* number of sectors in partition */ 1508 int sectoff; /* sector offset of partition */ 1509 int totwrt; /* total number of sectors left to write */ 1510 int nwrt; /* current number of sectors to write */ 1511 struct scsipi_rw_10 cmd; /* write command */ 1512 struct scsipi_xfer *xs; /* ... convenience */ 1513 struct scsipi_periph *periph; 1514 struct scsipi_channel *chan; 1515 1516 /* Check if recursive dump; if so, punt. */ 1517 if (sddoingadump) 1518 return (EFAULT); 1519 1520 /* Mark as active early. */ 1521 sddoingadump = 1; 1522 1523 unit = SDUNIT(dev); /* Decompose unit & partition. */ 1524 part = SDPART(dev); 1525 1526 /* Check for acceptable drive number. */ 1527 sd = device_lookup_private(&sd_cd, unit); 1528 if (sd == NULL) 1529 return (ENXIO); 1530 1531 if (!device_is_active(sd->sc_dev)) 1532 return (ENODEV); 1533 1534 periph = sd->sc_periph; 1535 chan = periph->periph_channel; 1536 1537 /* Make sure it was initialized. */ 1538 if ((periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1539 return (ENXIO); 1540 1541 /* Convert to disk sectors. Request must be a multiple of size. */ 1542 lp = sd->sc_dk.dk_label; 1543 sectorsize = lp->d_secsize; 1544 if ((size % sectorsize) != 0) 1545 return (EFAULT); 1546 totwrt = size / sectorsize; 1547 blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ 1548 1549 nsects = lp->d_partitions[part].p_size; 1550 sectoff = lp->d_partitions[part].p_offset; 1551 1552 /* Check transfer bounds against partition size. */ 1553 if ((blkno < 0) || ((blkno + totwrt) > nsects)) 1554 return (EINVAL); 1555 1556 /* Offset block number to start of partition. */ 1557 blkno += sectoff; 1558 1559 xs = &sx; 1560 1561 while (totwrt > 0) { 1562 nwrt = totwrt; /* XXX */ 1563 #ifndef SD_DUMP_NOT_TRUSTED 1564 /* 1565 * Fill out the scsi command 1566 */ 1567 memset(&cmd, 0, sizeof(cmd)); 1568 cmd.opcode = WRITE_10; 1569 _lto4b(blkno, cmd.addr); 1570 _lto2b(nwrt, cmd.length); 1571 /* 1572 * Fill out the scsipi_xfer structure 1573 * Note: we cannot sleep as we may be an interrupt 1574 * don't use scsipi_command() as it may want to wait 1575 * for an xs. 1576 */ 1577 memset(xs, 0, sizeof(sx)); 1578 xs->xs_control |= XS_CTL_NOSLEEP | XS_CTL_POLL | 1579 XS_CTL_DATA_OUT; 1580 xs->xs_status = 0; 1581 xs->xs_periph = periph; 1582 xs->xs_retries = SDRETRIES; 1583 xs->timeout = 10000; /* 10000 millisecs for a disk ! */ 1584 xs->cmd = (struct scsipi_generic *)&cmd; 1585 xs->cmdlen = sizeof(cmd); 1586 xs->resid = nwrt * sectorsize; 1587 xs->error = XS_NOERROR; 1588 xs->bp = 0; 1589 xs->data = va; 1590 xs->datalen = nwrt * sectorsize; 1591 callout_init(&xs->xs_callout, 0); 1592 1593 /* 1594 * Pass all this info to the scsi driver. 1595 */ 1596 scsipi_adapter_request(chan, ADAPTER_REQ_RUN_XFER, xs); 1597 if ((xs->xs_status & XS_STS_DONE) == 0 || 1598 xs->error != XS_NOERROR) 1599 return (EIO); 1600 #else /* SD_DUMP_NOT_TRUSTED */ 1601 /* Let's just talk about this first... */ 1602 printf("sd%d: dump addr 0x%x, blk %d\n", unit, va, blkno); 1603 delay(500 * 1000); /* half a second */ 1604 #endif /* SD_DUMP_NOT_TRUSTED */ 1605 1606 /* update block count */ 1607 totwrt -= nwrt; 1608 blkno += nwrt; 1609 va = (char *)va + sectorsize * nwrt; 1610 } 1611 sddoingadump = 0; 1612 return (0); 1613 } 1614 1615 static int 1616 sd_mode_sense(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1617 int page, int flags, int *big) 1618 { 1619 1620 if ((sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) && 1621 !(sd->sc_periph->periph_quirks & PQUIRK_NOBIGMODESENSE)) { 1622 *big = 1; 1623 return scsipi_mode_sense_big(sd->sc_periph, byte2, page, sense, 1624 size + sizeof(struct scsi_mode_parameter_header_10), 1625 flags, SDRETRIES, 6000); 1626 } else { 1627 *big = 0; 1628 return scsipi_mode_sense(sd->sc_periph, byte2, page, sense, 1629 size + sizeof(struct scsi_mode_parameter_header_6), 1630 flags, SDRETRIES, 6000); 1631 } 1632 } 1633 1634 static int 1635 sd_mode_select(struct sd_softc *sd, u_int8_t byte2, void *sense, size_t size, 1636 int flags, int big) 1637 { 1638 1639 if (big) { 1640 struct scsi_mode_parameter_header_10 *header = sense; 1641 1642 _lto2b(0, header->data_length); 1643 return scsipi_mode_select_big(sd->sc_periph, byte2, sense, 1644 size + sizeof(struct scsi_mode_parameter_header_10), 1645 flags, SDRETRIES, 6000); 1646 } else { 1647 struct scsi_mode_parameter_header_6 *header = sense; 1648 1649 header->data_length = 0; 1650 return scsipi_mode_select(sd->sc_periph, byte2, sense, 1651 size + sizeof(struct scsi_mode_parameter_header_6), 1652 flags, SDRETRIES, 6000); 1653 } 1654 } 1655 1656 /* 1657 * sd_validate_blksize: 1658 * 1659 * Validate the block size. Print error if periph is specified, 1660 */ 1661 static int 1662 sd_validate_blksize(struct scsipi_periph *periph, int len) 1663 { 1664 1665 switch (len) { 1666 case 256: 1667 case 512: 1668 case 1024: 1669 case 2048: 1670 case 4096: 1671 return 1; 1672 } 1673 1674 if (periph) { 1675 scsipi_printaddr(periph); 1676 printf("%s sector size: 0x%x. Defaulting to %d bytes.\n", 1677 (len ^ (1 << (ffs(len) - 1))) ? 1678 "preposterous" : "unsupported", 1679 len, SD_DEFAULT_BLKSIZE); 1680 } 1681 1682 return 0; 1683 } 1684 1685 /* 1686 * sd_read_capacity: 1687 * 1688 * Find out from the device what its capacity is. 1689 */ 1690 static u_int64_t 1691 sd_read_capacity(struct scsipi_periph *periph, int *blksize, int flags) 1692 { 1693 union { 1694 struct scsipi_read_capacity_10 cmd; 1695 struct scsipi_read_capacity_16 cmd16; 1696 } cmd; 1697 union { 1698 struct scsipi_read_capacity_10_data data; 1699 struct scsipi_read_capacity_16_data data16; 1700 } *datap; 1701 uint64_t rv; 1702 1703 memset(&cmd, 0, sizeof(cmd)); 1704 cmd.cmd.opcode = READ_CAPACITY_10; 1705 1706 /* 1707 * Don't allocate data buffer on stack; 1708 * The lower driver layer might use the same stack and 1709 * if it uses region which is in the same cacheline, 1710 * cache flush ops against the data buffer won't work properly. 1711 */ 1712 datap = malloc(sizeof(*datap), M_TEMP, M_WAITOK); 1713 if (datap == NULL) 1714 return 0; 1715 1716 /* 1717 * If the command works, interpret the result as a 4 byte 1718 * number of blocks 1719 */ 1720 rv = 0; 1721 memset(datap, 0, sizeof(datap->data)); 1722 if (scsipi_command(periph, (void *)&cmd.cmd, sizeof(cmd.cmd), 1723 (void *)datap, sizeof(datap->data), SCSIPIRETRIES, 20000, NULL, 1724 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1725 goto out; 1726 1727 if (_4btol(datap->data.addr) != 0xffffffff) { 1728 *blksize = _4btol(datap->data.length); 1729 rv = _4btol(datap->data.addr) + 1; 1730 goto out; 1731 } 1732 1733 /* 1734 * Device is larger than can be reflected by READ CAPACITY (10). 1735 * Try READ CAPACITY (16). 1736 */ 1737 1738 memset(&cmd, 0, sizeof(cmd)); 1739 cmd.cmd16.opcode = READ_CAPACITY_16; 1740 cmd.cmd16.byte2 = SRC16_SERVICE_ACTION; 1741 _lto4b(sizeof(datap->data16), cmd.cmd16.len); 1742 1743 memset(datap, 0, sizeof(datap->data16)); 1744 if (scsipi_command(periph, (void *)&cmd.cmd16, sizeof(cmd.cmd16), 1745 (void *)datap, sizeof(datap->data16), SCSIPIRETRIES, 20000, NULL, 1746 flags | XS_CTL_DATA_IN | XS_CTL_SILENT) != 0) 1747 goto out; 1748 1749 *blksize = _4btol(datap->data16.length); 1750 rv = _8btol(datap->data16.addr) + 1; 1751 1752 out: 1753 free(datap, M_TEMP); 1754 return rv; 1755 } 1756 1757 static int 1758 sd_get_simplifiedparms(struct sd_softc *sd, struct disk_parms *dp, int flags) 1759 { 1760 struct { 1761 struct scsi_mode_parameter_header_6 header; 1762 /* no block descriptor */ 1763 u_int8_t pg_code; /* page code (should be 6) */ 1764 u_int8_t pg_length; /* page length (should be 11) */ 1765 u_int8_t wcd; /* bit0: cache disable */ 1766 u_int8_t lbs[2]; /* logical block size */ 1767 u_int8_t size[5]; /* number of log. blocks */ 1768 u_int8_t pp; /* power/performance */ 1769 u_int8_t flags; 1770 u_int8_t resvd; 1771 } scsipi_sense; 1772 u_int64_t blocks; 1773 int error, blksize; 1774 1775 /* 1776 * sd_read_capacity (ie "read capacity") and mode sense page 6 1777 * give the same information. Do both for now, and check 1778 * for consistency. 1779 * XXX probably differs for removable media 1780 */ 1781 dp->blksize = SD_DEFAULT_BLKSIZE; 1782 if ((blocks = sd_read_capacity(sd->sc_periph, &blksize, flags)) == 0) 1783 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1784 1785 error = scsipi_mode_sense(sd->sc_periph, SMS_DBD, 6, 1786 &scsipi_sense.header, sizeof(scsipi_sense), 1787 flags, SDRETRIES, 6000); 1788 1789 if (error != 0) 1790 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1791 1792 dp->blksize = blksize; 1793 if (!sd_validate_blksize(NULL, dp->blksize)) 1794 dp->blksize = _2btol(scsipi_sense.lbs); 1795 if (!sd_validate_blksize(sd->sc_periph, dp->blksize)) 1796 dp->blksize = SD_DEFAULT_BLKSIZE; 1797 1798 /* 1799 * Create a pseudo-geometry. 1800 */ 1801 dp->heads = 64; 1802 dp->sectors = 32; 1803 dp->cyls = blocks / (dp->heads * dp->sectors); 1804 dp->disksize = _5btol(scsipi_sense.size); 1805 if (dp->disksize <= UINT32_MAX && dp->disksize != blocks) { 1806 printf("RBC size: mode sense=%llu, get cap=%llu\n", 1807 (unsigned long long)dp->disksize, 1808 (unsigned long long)blocks); 1809 dp->disksize = blocks; 1810 } 1811 dp->disksize512 = (dp->disksize * dp->blksize) / DEV_BSIZE; 1812 1813 return (SDGP_RESULT_OK); 1814 } 1815 1816 /* 1817 * Get the scsi driver to send a full inquiry to the * device and use the 1818 * results to fill out the disk parameter structure. 1819 */ 1820 static int 1821 sd_get_capacity(struct sd_softc *sd, struct disk_parms *dp, int flags) 1822 { 1823 u_int64_t blocks; 1824 int error, blksize; 1825 #if 0 1826 int i; 1827 u_int8_t *p; 1828 #endif 1829 1830 dp->disksize = blocks = sd_read_capacity(sd->sc_periph, &blksize, 1831 flags); 1832 if (blocks == 0) { 1833 struct scsipi_read_format_capacities cmd; 1834 struct { 1835 struct scsipi_capacity_list_header header; 1836 struct scsipi_capacity_descriptor desc; 1837 } __packed data; 1838 1839 memset(&cmd, 0, sizeof(cmd)); 1840 memset(&data, 0, sizeof(data)); 1841 cmd.opcode = READ_FORMAT_CAPACITIES; 1842 _lto2b(sizeof(data), cmd.length); 1843 1844 error = scsipi_command(sd->sc_periph, 1845 (void *)&cmd, sizeof(cmd), (void *)&data, sizeof(data), 1846 SDRETRIES, 20000, NULL, 1847 flags | XS_CTL_DATA_IN); 1848 if (error == EFTYPE) { 1849 /* Medium Format Corrupted, handle as not formatted */ 1850 return (SDGP_RESULT_UNFORMATTED); 1851 } 1852 if (error || data.header.length == 0) 1853 return (SDGP_RESULT_OFFLINE); 1854 1855 #if 0 1856 printf("rfc: length=%d\n", data.header.length); 1857 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"); 1858 #endif 1859 switch (data.desc.byte5 & SCSIPI_CAP_DESC_CODE_MASK) { 1860 case SCSIPI_CAP_DESC_CODE_RESERVED: 1861 case SCSIPI_CAP_DESC_CODE_FORMATTED: 1862 break; 1863 1864 case SCSIPI_CAP_DESC_CODE_UNFORMATTED: 1865 return (SDGP_RESULT_UNFORMATTED); 1866 1867 case SCSIPI_CAP_DESC_CODE_NONE: 1868 return (SDGP_RESULT_OFFLINE); 1869 } 1870 1871 dp->disksize = blocks = _4btol(data.desc.nblks); 1872 if (blocks == 0) 1873 return (SDGP_RESULT_OFFLINE); /* XXX? */ 1874 1875 blksize = _3btol(data.desc.blklen); 1876 1877 } else if (!sd_validate_blksize(NULL, blksize)) { 1878 struct sd_mode_sense_data scsipi_sense; 1879 int big, bsize; 1880 struct scsi_general_block_descriptor *bdesc; 1881 1882 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1883 error = sd_mode_sense(sd, 0, &scsipi_sense, 1884 sizeof(scsipi_sense.blk_desc), 0, flags | XS_CTL_SILENT, &big); 1885 if (!error) { 1886 if (big) { 1887 bdesc = (void *)(&scsipi_sense.header.big + 1); 1888 bsize = _2btol(scsipi_sense.header.big.blk_desc_len); 1889 } else { 1890 bdesc = (void *)(&scsipi_sense.header.small + 1); 1891 bsize = scsipi_sense.header.small.blk_desc_len; 1892 } 1893 1894 #if 0 1895 printf("page 0 sense:"); for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; i--, p++) printf(" %02x", *p); printf("\n"); 1896 printf("page 0 bsize=%d\n", bsize); 1897 printf("page 0 ok\n"); 1898 #endif 1899 1900 if (bsize >= 8) { 1901 blksize = _3btol(bdesc->blklen); 1902 } 1903 } 1904 } 1905 1906 if (!sd_validate_blksize(sd->sc_periph, blksize)) 1907 blksize = SD_DEFAULT_BLKSIZE; 1908 1909 dp->blksize = blksize; 1910 dp->disksize512 = (blocks * dp->blksize) / DEV_BSIZE; 1911 return (0); 1912 } 1913 1914 static int 1915 sd_get_parms_page4(struct sd_softc *sd, struct disk_parms *dp, int flags) 1916 { 1917 struct sd_mode_sense_data scsipi_sense; 1918 int error; 1919 int big, byte2; 1920 size_t poffset; 1921 union scsi_disk_pages *pages; 1922 1923 byte2 = SMS_DBD; 1924 again: 1925 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 1926 error = sd_mode_sense(sd, byte2, &scsipi_sense, 1927 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 1928 sizeof(scsipi_sense.pages.rigid_geometry), 4, 1929 flags | XS_CTL_SILENT, &big); 1930 if (error) { 1931 if (byte2 == SMS_DBD) { 1932 /* No result; try once more with DBD off */ 1933 byte2 = 0; 1934 goto again; 1935 } 1936 return (error); 1937 } 1938 1939 if (big) { 1940 poffset = sizeof scsipi_sense.header.big; 1941 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 1942 } else { 1943 poffset = sizeof scsipi_sense.header.small; 1944 poffset += scsipi_sense.header.small.blk_desc_len; 1945 } 1946 1947 if (poffset > sizeof(scsipi_sense) - sizeof(pages->rigid_geometry)) 1948 return ERESTART; 1949 1950 pages = (void *)((u_long)&scsipi_sense + poffset); 1951 #if 0 1952 { 1953 size_t i; 1954 u_int8_t *p; 1955 1956 printf("page 4 sense:"); 1957 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 1958 i--, p++) 1959 printf(" %02x", *p); 1960 printf("\n"); 1961 printf("page 4 pg_code=%d sense=%p/%p\n", 1962 pages->rigid_geometry.pg_code, &scsipi_sense, pages); 1963 } 1964 #endif 1965 1966 if ((pages->rigid_geometry.pg_code & PGCODE_MASK) != 4) 1967 return (ERESTART); 1968 1969 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 1970 ("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n", 1971 _3btol(pages->rigid_geometry.ncyl), 1972 pages->rigid_geometry.nheads, 1973 _2btol(pages->rigid_geometry.st_cyl_wp), 1974 _2btol(pages->rigid_geometry.st_cyl_rwc), 1975 _2btol(pages->rigid_geometry.land_zone))); 1976 1977 /* 1978 * KLUDGE!! (for zone recorded disks) 1979 * give a number of sectors so that sec * trks * cyls 1980 * is <= disk_size 1981 * can lead to wasted space! THINK ABOUT THIS ! 1982 */ 1983 dp->heads = pages->rigid_geometry.nheads; 1984 dp->cyls = _3btol(pages->rigid_geometry.ncyl); 1985 if (dp->heads == 0 || dp->cyls == 0) 1986 return (ERESTART); 1987 dp->sectors = dp->disksize / (dp->heads * dp->cyls); /* XXX */ 1988 1989 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 1990 if (dp->rot_rate == 0) 1991 dp->rot_rate = 3600; 1992 1993 #if 0 1994 printf("page 4 ok\n"); 1995 #endif 1996 return (0); 1997 } 1998 1999 static int 2000 sd_get_parms_page5(struct sd_softc *sd, struct disk_parms *dp, int flags) 2001 { 2002 struct sd_mode_sense_data scsipi_sense; 2003 int error; 2004 int big, byte2; 2005 size_t poffset; 2006 union scsi_disk_pages *pages; 2007 2008 byte2 = SMS_DBD; 2009 again: 2010 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2011 error = sd_mode_sense(sd, 0, &scsipi_sense, 2012 (byte2 ? 0 : sizeof(scsipi_sense.blk_desc)) + 2013 sizeof(scsipi_sense.pages.flex_geometry), 5, 2014 flags | XS_CTL_SILENT, &big); 2015 if (error) { 2016 if (byte2 == SMS_DBD) { 2017 /* No result; try once more with DBD off */ 2018 byte2 = 0; 2019 goto again; 2020 } 2021 return (error); 2022 } 2023 2024 if (big) { 2025 poffset = sizeof scsipi_sense.header.big; 2026 poffset += _2btol(scsipi_sense.header.big.blk_desc_len); 2027 } else { 2028 poffset = sizeof scsipi_sense.header.small; 2029 poffset += scsipi_sense.header.small.blk_desc_len; 2030 } 2031 2032 if (poffset > sizeof(scsipi_sense) - sizeof(pages->flex_geometry)) 2033 return ERESTART; 2034 2035 pages = (void *)((u_long)&scsipi_sense + poffset); 2036 #if 0 2037 { 2038 size_t i; 2039 u_int8_t *p; 2040 2041 printf("page 5 sense:"); 2042 for (i = sizeof(scsipi_sense), p = (void *)&scsipi_sense; i; 2043 i--, p++) 2044 printf(" %02x", *p); 2045 printf("\n"); 2046 printf("page 5 pg_code=%d sense=%p/%p\n", 2047 pages->flex_geometry.pg_code, &scsipi_sense, pages); 2048 } 2049 #endif 2050 2051 if ((pages->flex_geometry.pg_code & PGCODE_MASK) != 5) 2052 return (ERESTART); 2053 2054 SC_DEBUG(sd->sc_periph, SCSIPI_DB3, 2055 ("%d cyls, %d heads, %d sec, %d bytes/sec\n", 2056 _3btol(pages->flex_geometry.ncyl), 2057 pages->flex_geometry.nheads, 2058 pages->flex_geometry.ph_sec_tr, 2059 _2btol(pages->flex_geometry.bytes_s))); 2060 2061 dp->heads = pages->flex_geometry.nheads; 2062 dp->cyls = _2btol(pages->flex_geometry.ncyl); 2063 dp->sectors = pages->flex_geometry.ph_sec_tr; 2064 if (dp->heads == 0 || dp->cyls == 0 || dp->sectors == 0) 2065 return (ERESTART); 2066 2067 dp->rot_rate = _2btol(pages->rigid_geometry.rpm); 2068 if (dp->rot_rate == 0) 2069 dp->rot_rate = 3600; 2070 2071 #if 0 2072 printf("page 5 ok\n"); 2073 #endif 2074 return (0); 2075 } 2076 2077 static int 2078 sd_get_parms(struct sd_softc *sd, struct disk_parms *dp, int flags) 2079 { 2080 int error; 2081 2082 /* 2083 * If offline, the SDEV_MEDIA_LOADED flag will be 2084 * cleared by the caller if necessary. 2085 */ 2086 if (sd->type == T_SIMPLE_DIRECT) { 2087 error = sd_get_simplifiedparms(sd, dp, flags); 2088 if (!error) 2089 goto setprops; 2090 return (error); 2091 } 2092 2093 error = sd_get_capacity(sd, dp, flags); 2094 if (error) 2095 return (error); 2096 2097 if (sd->type == T_OPTICAL) 2098 goto page0; 2099 2100 if (sd->sc_periph->periph_flags & PERIPH_REMOVABLE) { 2101 if (!sd_get_parms_page5(sd, dp, flags) || 2102 !sd_get_parms_page4(sd, dp, flags)) 2103 goto setprops; 2104 } else { 2105 if (!sd_get_parms_page4(sd, dp, flags) || 2106 !sd_get_parms_page5(sd, dp, flags)) 2107 goto setprops; 2108 } 2109 2110 page0: 2111 printf("%s: fabricating a geometry\n", device_xname(sd->sc_dev)); 2112 /* Try calling driver's method for figuring out geometry. */ 2113 if (!sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom || 2114 !(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom) 2115 (sd->sc_periph, dp, dp->disksize)) { 2116 /* 2117 * Use adaptec standard fictitious geometry 2118 * this depends on which controller (e.g. 1542C is 2119 * different. but we have to put SOMETHING here..) 2120 */ 2121 dp->heads = 64; 2122 dp->sectors = 32; 2123 dp->cyls = dp->disksize / (64 * 32); 2124 } 2125 dp->rot_rate = 3600; 2126 2127 setprops: 2128 sd_set_geometry(sd); 2129 2130 return (SDGP_RESULT_OK); 2131 } 2132 2133 static int 2134 sd_flush(struct sd_softc *sd, int flags) 2135 { 2136 struct scsipi_periph *periph = sd->sc_periph; 2137 struct scsi_synchronize_cache_10 cmd; 2138 2139 /* 2140 * If the device is SCSI-2, issue a SYNCHRONIZE CACHE. 2141 * We issue with address 0 length 0, which should be 2142 * interpreted by the device as "all remaining blocks 2143 * starting at address 0". We ignore ILLEGAL REQUEST 2144 * in the event that the command is not supported by 2145 * the device, and poll for completion so that we know 2146 * that the cache has actually been flushed. 2147 * 2148 * Unless, that is, the device can't handle the SYNCHRONIZE CACHE 2149 * command, as indicated by our quirks flags. 2150 * 2151 * XXX What about older devices? 2152 */ 2153 if (periph->periph_version < 2 || 2154 (periph->periph_quirks & PQUIRK_NOSYNCCACHE)) 2155 return (0); 2156 2157 sd->flags |= SDF_FLUSHING; 2158 memset(&cmd, 0, sizeof(cmd)); 2159 cmd.opcode = SCSI_SYNCHRONIZE_CACHE_10; 2160 2161 return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0, 2162 SDRETRIES, 100000, NULL, flags | XS_CTL_IGNORE_ILLEGAL_REQUEST)); 2163 } 2164 2165 static int 2166 sd_getcache(struct sd_softc *sd, int *bitsp) 2167 { 2168 struct scsipi_periph *periph = sd->sc_periph; 2169 struct sd_mode_sense_data scsipi_sense; 2170 int error, bits = 0; 2171 int big; 2172 union scsi_disk_pages *pages; 2173 2174 if (periph->periph_version < 2) 2175 return (EOPNOTSUPP); 2176 2177 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2178 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2179 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2180 if (error) 2181 return (error); 2182 2183 if (big) 2184 pages = (void *)(&scsipi_sense.header.big + 1); 2185 else 2186 pages = (void *)(&scsipi_sense.header.small + 1); 2187 2188 if ((pages->caching_params.flags & CACHING_RCD) == 0) 2189 bits |= DKCACHE_READ; 2190 if (pages->caching_params.flags & CACHING_WCE) 2191 bits |= DKCACHE_WRITE; 2192 if (pages->caching_params.pg_code & PGCODE_PS) 2193 bits |= DKCACHE_SAVE; 2194 2195 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2196 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2197 sizeof(scsipi_sense.pages.caching_params), 2198 SMS_PCTRL_CHANGEABLE|8, 0, &big); 2199 if (error == 0) { 2200 if (big) 2201 pages = (void *)(&scsipi_sense.header.big + 1); 2202 else 2203 pages = (void *)(&scsipi_sense.header.small + 1); 2204 2205 if (pages->caching_params.flags & CACHING_RCD) 2206 bits |= DKCACHE_RCHANGE; 2207 if (pages->caching_params.flags & CACHING_WCE) 2208 bits |= DKCACHE_WCHANGE; 2209 } 2210 2211 *bitsp = bits; 2212 2213 return (0); 2214 } 2215 2216 static int 2217 sd_setcache(struct sd_softc *sd, int bits) 2218 { 2219 struct scsipi_periph *periph = sd->sc_periph; 2220 struct sd_mode_sense_data scsipi_sense; 2221 int error; 2222 uint8_t oflags, byte2 = 0; 2223 int big; 2224 union scsi_disk_pages *pages; 2225 2226 if (periph->periph_version < 2) 2227 return (EOPNOTSUPP); 2228 2229 memset(&scsipi_sense, 0, sizeof(scsipi_sense)); 2230 error = sd_mode_sense(sd, SMS_DBD, &scsipi_sense, 2231 sizeof(scsipi_sense.pages.caching_params), 8, 0, &big); 2232 if (error) 2233 return (error); 2234 2235 if (big) 2236 pages = (void *)(&scsipi_sense.header.big + 1); 2237 else 2238 pages = (void *)(&scsipi_sense.header.small + 1); 2239 2240 oflags = pages->caching_params.flags; 2241 2242 if (bits & DKCACHE_READ) 2243 pages->caching_params.flags &= ~CACHING_RCD; 2244 else 2245 pages->caching_params.flags |= CACHING_RCD; 2246 2247 if (bits & DKCACHE_WRITE) 2248 pages->caching_params.flags |= CACHING_WCE; 2249 else 2250 pages->caching_params.flags &= ~CACHING_WCE; 2251 2252 if (oflags == pages->caching_params.flags) 2253 return (0); 2254 2255 pages->caching_params.pg_code &= PGCODE_MASK; 2256 2257 if (bits & DKCACHE_SAVE) 2258 byte2 |= SMS_SP; 2259 2260 return (sd_mode_select(sd, byte2|SMS_PF, &scsipi_sense, 2261 sizeof(struct scsi_mode_page_header) + 2262 pages->caching_params.pg_length, 0, big)); 2263 } 2264 2265 static void 2266 sd_set_geometry(struct sd_softc *sd) 2267 { 2268 struct disk_geom *dg = &sd->sc_dk.dk_geom; 2269 2270 memset(dg, 0, sizeof(*dg)); 2271 2272 dg->dg_secperunit = sd->params.disksize; 2273 dg->dg_secsize = sd->params.blksize; 2274 dg->dg_nsectors = sd->params.sectors; 2275 dg->dg_ntracks = sd->params.heads; 2276 dg->dg_ncylinders = sd->params.cyls; 2277 2278 disk_set_info(sd->sc_dev, &sd->sc_dk, NULL); 2279 } 2280
Indexes created Sat Sep 27 14:09:57 GMT 2025