wd.c revision 1.228
1 /* $NetBSD: wd.c,v 1.228 2002/09/30 20:42:10 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum and by Onno van der Linden. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the NetBSD 50 * Foundation, Inc. and its contributors. 51 * 4. Neither the name of The NetBSD Foundation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.228 2002/09/30 20:42:10 thorpej Exp $"); 70 71 #ifndef WDCDEBUG 72 #define WDCDEBUG 73 #endif /* WDCDEBUG */ 74 75 #include "rnd.h" 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/conf.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/ioctl.h> 84 #include <sys/buf.h> 85 #include <sys/uio.h> 86 #include <sys/malloc.h> 87 #include <sys/device.h> 88 #include <sys/disklabel.h> 89 #include <sys/disk.h> 90 #include <sys/syslog.h> 91 #include <sys/proc.h> 92 #include <sys/vnode.h> 93 #if NRND > 0 94 #include <sys/rnd.h> 95 #endif 96 97 #include <machine/intr.h> 98 #include <machine/bus.h> 99 100 #include <dev/ata/atareg.h> 101 #include <dev/ata/atavar.h> 102 #include <dev/ata/wdvar.h> 103 #include <dev/ic/wdcreg.h> 104 #include <sys/ataio.h> 105 #include "locators.h" 106 107 #define WAITTIME (4 * hz) /* time to wait for a completion */ 108 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 109 #define WDIORETRIES 5 /* number of retries before giving up */ 110 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 111 112 #define WDUNIT(dev) DISKUNIT(dev) 113 #define WDPART(dev) DISKPART(dev) 114 #define WDMINOR(unit, part) DISKMINOR(unit, part) 115 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 116 117 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 118 119 #define DEBUG_INTR 0x01 120 #define DEBUG_XFERS 0x02 121 #define DEBUG_STATUS 0x04 122 #define DEBUG_FUNCS 0x08 123 #define DEBUG_PROBE 0x10 124 #ifdef WDCDEBUG 125 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 126 #define WDCDEBUG_PRINT(args, level) \ 127 if (wdcdebug_wd_mask & (level)) \ 128 printf args 129 #else 130 #define WDCDEBUG_PRINT(args, level) 131 #endif 132 133 struct wd_softc { 134 /* General disk infos */ 135 struct device sc_dev; 136 struct disk sc_dk; 137 struct bufq_state sc_q; 138 struct callout sc_restart_ch; 139 /* IDE disk soft states */ 140 struct ata_bio sc_wdc_bio; /* current transfer */ 141 struct buf *sc_bp; /* buf being transfered */ 142 void *wdc_softc; /* pointer to our parent */ 143 struct ata_drive_datas *drvp; /* Our controller's infos */ 144 const struct ata_bustype *atabus; 145 int openings; 146 struct ataparams sc_params;/* drive characteistics found */ 147 int sc_flags; 148 #define WDF_LOCKED 0x001 149 #define WDF_WANTED 0x002 150 #define WDF_WLABEL 0x004 /* label is writable */ 151 #define WDF_LABELLING 0x008 /* writing label */ 152 /* 153 * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is 154 * more fully implemented. 155 */ 156 #define WDF_LOADED 0x010 /* parameters loaded */ 157 #define WDF_WAIT 0x020 /* waiting for resources */ 158 #define WDF_LBA 0x040 /* using LBA mode */ 159 #define WDF_KLABEL 0x080 /* retain label after 'full' close */ 160 #define WDF_LBA48 0x100 /* using 48-bit LBA mode */ 161 int sc_capacity; 162 int cyl; /* actual drive parameters */ 163 int heads; 164 int sectors; 165 int retries; /* number of xfer retry */ 166 167 void *sc_sdhook; /* our shutdown hook */ 168 169 #if NRND > 0 170 rndsource_element_t rnd_source; 171 #endif 172 }; 173 174 #define sc_drive sc_wdc_bio.drive 175 #define sc_mode sc_wdc_bio.mode 176 #define sc_multi sc_wdc_bio.multi 177 #define sc_badsect sc_wdc_bio.badsect 178 179 int wdprobe __P((struct device *, struct cfdata *, void *)); 180 void wdattach __P((struct device *, struct device *, void *)); 181 int wddetach __P((struct device *, int)); 182 int wdactivate __P((struct device *, enum devact)); 183 int wdprint __P((void *, char *)); 184 void wdperror __P((const struct wd_softc *)); 185 186 CFATTACH_DECL(wd, sizeof(struct wd_softc), 187 wdprobe, wdattach, wddetach, wdactivate) 188 189 extern struct cfdriver wd_cd; 190 191 dev_type_open(wdopen); 192 dev_type_close(wdclose); 193 dev_type_read(wdread); 194 dev_type_write(wdwrite); 195 dev_type_ioctl(wdioctl); 196 dev_type_strategy(wdstrategy); 197 dev_type_dump(wddump); 198 dev_type_size(wdsize); 199 200 const struct bdevsw wd_bdevsw = { 201 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 202 }; 203 204 const struct cdevsw wd_cdevsw = { 205 wdopen, wdclose, wdread, wdwrite, wdioctl, 206 nostop, notty, nopoll, nommap, D_DISK 207 }; 208 209 /* 210 * Glue necessary to hook WDCIOCCOMMAND into physio 211 */ 212 213 struct wd_ioctl { 214 LIST_ENTRY(wd_ioctl) wi_list; 215 struct buf wi_bp; 216 struct uio wi_uio; 217 struct iovec wi_iov; 218 atareq_t wi_atareq; 219 struct wd_softc *wi_softc; 220 }; 221 222 LIST_HEAD(, wd_ioctl) wi_head; 223 224 struct wd_ioctl *wi_find __P((struct buf *)); 225 void wi_free __P((struct wd_ioctl *)); 226 struct wd_ioctl *wi_get __P((void)); 227 void wdioctlstrategy __P((struct buf *)); 228 229 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 230 void wdgetdisklabel __P((struct wd_softc *)); 231 void wdstart __P((void *)); 232 void __wdstart __P((struct wd_softc*, struct buf *)); 233 void wdrestart __P((void*)); 234 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 235 void wd_flushcache __P((struct wd_softc *, int)); 236 void wd_shutdown __P((void*)); 237 238 struct dkdriver wddkdriver = { wdstrategy }; 239 240 #ifdef HAS_BAD144_HANDLING 241 static void bad144intern __P((struct wd_softc *)); 242 #endif 243 int wdlock __P((struct wd_softc *)); 244 void wdunlock __P((struct wd_softc *)); 245 246 int 247 wdprobe(parent, match, aux) 248 struct device *parent; 249 struct cfdata *match; 250 251 void *aux; 252 { 253 struct ata_device *adev = aux; 254 255 if (adev == NULL) 256 return 0; 257 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 258 return 0; 259 260 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 261 match->cf_loc[ATACF_CHANNEL] != adev->adev_channel) 262 return 0; 263 264 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 265 match->cf_loc[ATACF_DRIVE] != adev->adev_drv_data->drive) 266 return 0; 267 return 1; 268 } 269 270 void 271 wdattach(parent, self, aux) 272 struct device *parent, *self; 273 void *aux; 274 { 275 struct wd_softc *wd = (void *)self; 276 struct ata_device *adev= aux; 277 int i, blank; 278 char buf[41], pbuf[9], c, *p, *q; 279 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 280 281 callout_init(&wd->sc_restart_ch); 282 bufq_alloc(&wd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 283 284 wd->atabus = adev->adev_bustype; 285 wd->openings = adev->adev_openings; 286 wd->drvp = adev->adev_drv_data;; 287 wd->wdc_softc = parent; 288 /* give back our softc to our caller */ 289 wd->drvp->drv_softc = &wd->sc_dev; 290 291 /* read our drive info */ 292 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 293 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 294 return; 295 } 296 297 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 298 i < sizeof(wd->sc_params.atap_model); i++) { 299 c = *p++; 300 if (c == '\0') 301 break; 302 if (c != ' ') { 303 if (blank) { 304 *q++ = ' '; 305 blank = 0; 306 } 307 *q++ = c; 308 } else 309 blank = 1; 310 } 311 *q++ = '\0'; 312 313 printf(": <%s>\n", buf); 314 315 if ((wd->sc_params.atap_multi & 0xff) > 1) { 316 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 317 } else { 318 wd->sc_multi = 1; 319 } 320 321 printf("%s: drive supports %d-sector PIO transfers,", 322 wd->sc_dev.dv_xname, wd->sc_multi); 323 324 /* 48-bit LBA addressing */ 325 if ((wd->sc_params.atap_cmd2_en & WDC_CAP_LBA48) != 0) 326 wd->sc_flags |= WDF_LBA48; 327 328 /* Prior to ATA-4, LBA was optional. */ 329 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 330 wd->sc_flags |= WDF_LBA; 331 #if 0 332 /* ATA-4 requires LBA. */ 333 if (wd->sc_params.atap_ataversion != 0xffff && 334 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 335 wd->sc_flags |= WDF_LBA; 336 #endif 337 338 if ((wd->sc_flags & WDF_LBA48) != 0) { 339 printf(" LBA48 addressing\n"); 340 wd->sc_capacity = 341 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 342 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 343 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 344 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 345 } else if ((wd->sc_flags & WDF_LBA) != 0) { 346 printf(" LBA addressing\n"); 347 wd->sc_capacity = 348 (wd->sc_params.atap_capacity[1] << 16) | 349 wd->sc_params.atap_capacity[0]; 350 } else { 351 printf(" chs addressing\n"); 352 wd->sc_capacity = 353 wd->sc_params.atap_cylinders * 354 wd->sc_params.atap_heads * 355 wd->sc_params.atap_sectors; 356 } 357 format_bytes(pbuf, sizeof(pbuf), 358 (u_int64_t)wd->sc_capacity * DEV_BSIZE); 359 printf("%s: %s, %d cyl, %d head, %d sec, " 360 "%d bytes/sect x %d sectors\n", 361 self->dv_xname, pbuf, wd->sc_params.atap_cylinders, 362 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 363 DEV_BSIZE, wd->sc_capacity); 364 365 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 366 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 367 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 368 /* 369 * Initialize and attach the disk structure. 370 */ 371 wd->sc_dk.dk_driver = &wddkdriver; 372 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 373 disk_attach(&wd->sc_dk); 374 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 375 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 376 if (wd->sc_sdhook == NULL) 377 printf("%s: WARNING: unable to establish shutdown hook\n", 378 wd->sc_dev.dv_xname); 379 #if NRND > 0 380 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 381 RND_TYPE_DISK, 0); 382 #endif 383 } 384 385 int 386 wdactivate(self, act) 387 struct device *self; 388 enum devact act; 389 { 390 int rv = 0; 391 392 switch (act) { 393 case DVACT_ACTIVATE: 394 rv = EOPNOTSUPP; 395 break; 396 397 case DVACT_DEACTIVATE: 398 /* 399 * Nothing to do; we key off the device's DVF_ACTIVATE. 400 */ 401 break; 402 } 403 return (rv); 404 } 405 406 int 407 wddetach(self, flags) 408 struct device *self; 409 int flags; 410 { 411 struct wd_softc *sc = (struct wd_softc *)self; 412 struct buf *bp; 413 int s, bmaj, cmaj, i, mn; 414 415 /* locate the major number */ 416 bmaj = bdevsw_lookup_major(&wd_bdevsw); 417 cmaj = cdevsw_lookup_major(&wd_cdevsw); 418 419 s = splbio(); 420 421 /* Kill off any queued buffers. */ 422 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 423 bp->b_error = EIO; 424 bp->b_flags |= B_ERROR; 425 bp->b_resid = bp->b_bcount; 426 biodone(bp); 427 } 428 429 bufq_free(&sc->sc_q); 430 431 splx(s); 432 433 /* Nuke the vnodes for any open instances. */ 434 for (i = 0; i < MAXPARTITIONS; i++) { 435 mn = WDMINOR(self->dv_unit, i); 436 vdevgone(bmaj, mn, mn, VBLK); 437 vdevgone(cmaj, mn, mn, VCHR); 438 } 439 440 /* Detach disk. */ 441 disk_detach(&sc->sc_dk); 442 443 /* Get rid of the shutdown hook. */ 444 if (sc->sc_sdhook != NULL) 445 shutdownhook_disestablish(sc->sc_sdhook); 446 447 #if NRND > 0 448 /* Unhook the entropy source. */ 449 rnd_detach_source(&sc->rnd_source); 450 #endif 451 452 return (0); 453 } 454 455 /* 456 * Read/write routine for a buffer. Validates the arguments and schedules the 457 * transfer. Does not wait for the transfer to complete. 458 */ 459 void 460 wdstrategy(bp) 461 struct buf *bp; 462 { 463 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 464 struct disklabel *lp = wd->sc_dk.dk_label; 465 daddr_t blkno; 466 int s; 467 468 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 469 DEBUG_XFERS); 470 471 /* Valid request? */ 472 if (bp->b_blkno < 0 || 473 (bp->b_bcount % lp->d_secsize) != 0 || 474 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 475 bp->b_error = EINVAL; 476 goto bad; 477 } 478 479 /* If device invalidated (e.g. media change, door open), error. */ 480 if ((wd->sc_flags & WDF_LOADED) == 0) { 481 bp->b_error = EIO; 482 goto bad; 483 } 484 485 /* If it's a null transfer, return immediately. */ 486 if (bp->b_bcount == 0) 487 goto done; 488 489 /* 490 * Do bounds checking, adjust transfer. if error, process. 491 * If end of partition, just return. 492 */ 493 if (WDPART(bp->b_dev) != RAW_PART && 494 bounds_check_with_label(bp, wd->sc_dk.dk_label, 495 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 496 goto done; 497 498 /* 499 * Now convert the block number to absolute and put it in 500 * terms of the device's logical block size. 501 */ 502 if (lp->d_secsize >= DEV_BSIZE) 503 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 504 else 505 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 506 507 if (WDPART(bp->b_dev) != RAW_PART) 508 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 509 510 bp->b_rawblkno = blkno; 511 512 /* Queue transfer on drive, activate drive and controller if idle. */ 513 s = splbio(); 514 BUFQ_PUT(&wd->sc_q, bp); 515 wdstart(wd); 516 splx(s); 517 return; 518 bad: 519 bp->b_flags |= B_ERROR; 520 done: 521 /* Toss transfer; we're done early. */ 522 bp->b_resid = bp->b_bcount; 523 biodone(bp); 524 } 525 526 /* 527 * Queue a drive for I/O. 528 */ 529 void 530 wdstart(arg) 531 void *arg; 532 { 533 struct wd_softc *wd = arg; 534 struct buf *bp = NULL; 535 536 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 537 DEBUG_XFERS); 538 while (wd->openings > 0) { 539 540 /* Is there a buf for us ? */ 541 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 542 return; 543 544 /* 545 * Make the command. First lock the device 546 */ 547 wd->openings--; 548 549 wd->retries = 0; 550 __wdstart(wd, bp); 551 } 552 } 553 554 void 555 __wdstart(wd, bp) 556 struct wd_softc *wd; 557 struct buf *bp; 558 { 559 560 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 561 wd->sc_wdc_bio.blkdone =0; 562 wd->sc_bp = bp; 563 /* 564 * If we're retrying, retry in single-sector mode. This will give us 565 * the sector number of the problem, and will eventually allow the 566 * transfer to succeed. 567 */ 568 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 569 wd->sc_wdc_bio.flags = ATA_SINGLE; 570 else 571 wd->sc_wdc_bio.flags = 0; 572 if (wd->sc_flags & WDF_LBA48) 573 wd->sc_wdc_bio.flags |= ATA_LBA48; 574 if (wd->sc_flags & WDF_LBA) 575 wd->sc_wdc_bio.flags |= ATA_LBA; 576 if (bp->b_flags & B_READ) 577 wd->sc_wdc_bio.flags |= ATA_READ; 578 wd->sc_wdc_bio.bcount = bp->b_bcount; 579 wd->sc_wdc_bio.databuf = bp->b_data; 580 /* Instrumentation. */ 581 disk_busy(&wd->sc_dk); 582 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 583 case WDC_TRY_AGAIN: 584 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 585 break; 586 case WDC_QUEUED: 587 case WDC_COMPLETE: 588 break; 589 default: 590 panic("__wdstart: bad return code from ata_bio()"); 591 } 592 } 593 594 void 595 wddone(v) 596 void *v; 597 { 598 struct wd_softc *wd = v; 599 struct buf *bp = wd->sc_bp; 600 const char *errmsg; 601 int do_perror = 0; 602 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 603 DEBUG_XFERS); 604 605 if (bp == NULL) 606 return; 607 bp->b_resid = wd->sc_wdc_bio.bcount; 608 switch (wd->sc_wdc_bio.error) { 609 case ERR_DMA: 610 errmsg = "DMA error"; 611 goto retry; 612 case ERR_DF: 613 errmsg = "device fault"; 614 goto retry; 615 case TIMEOUT: 616 errmsg = "device timeout"; 617 goto retry; 618 case ERROR: 619 /* Don't care about media change bits */ 620 if (wd->sc_wdc_bio.r_error != 0 && 621 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 622 goto noerror; 623 errmsg = "error"; 624 do_perror = 1; 625 retry: /* Just reset and retry. Can we do more ? */ 626 wd->atabus->ata_reset_channel(wd->drvp); 627 diskerr(bp, "wd", errmsg, LOG_PRINTF, 628 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 629 if (wd->retries < WDIORETRIES) 630 printf(", retrying\n"); 631 if (do_perror) 632 wdperror(wd); 633 if (wd->retries < WDIORETRIES) { 634 wd->retries++; 635 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 636 wdrestart, wd); 637 return; 638 } 639 printf("\n"); 640 bp->b_flags |= B_ERROR; 641 bp->b_error = EIO; 642 break; 643 case NOERROR: 644 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 645 printf("%s: soft error (corrected)\n", 646 wd->sc_dev.dv_xname); 647 break; 648 case ERR_NODEV: 649 bp->b_flags |= B_ERROR; 650 bp->b_error = EIO; 651 break; 652 } 653 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 654 #if NRND > 0 655 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 656 #endif 657 biodone(bp); 658 wd->openings++; 659 wdstart(wd); 660 } 661 662 void 663 wdrestart(v) 664 void *v; 665 { 666 struct wd_softc *wd = v; 667 struct buf *bp = wd->sc_bp; 668 int s; 669 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 670 DEBUG_XFERS); 671 672 s = splbio(); 673 __wdstart(v, bp); 674 splx(s); 675 } 676 677 int 678 wdread(dev, uio, flags) 679 dev_t dev; 680 struct uio *uio; 681 int flags; 682 { 683 684 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 685 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 686 } 687 688 int 689 wdwrite(dev, uio, flags) 690 dev_t dev; 691 struct uio *uio; 692 int flags; 693 { 694 695 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 696 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 697 } 698 699 /* 700 * Wait interruptibly for an exclusive lock. 701 * 702 * XXX 703 * Several drivers do this; it should be abstracted and made MP-safe. 704 */ 705 int 706 wdlock(wd) 707 struct wd_softc *wd; 708 { 709 int error; 710 int s; 711 712 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 713 714 s = splbio(); 715 716 while ((wd->sc_flags & WDF_LOCKED) != 0) { 717 wd->sc_flags |= WDF_WANTED; 718 if ((error = tsleep(wd, PRIBIO | PCATCH, 719 "wdlck", 0)) != 0) { 720 splx(s); 721 return error; 722 } 723 } 724 wd->sc_flags |= WDF_LOCKED; 725 splx(s); 726 return 0; 727 } 728 729 /* 730 * Unlock and wake up any waiters. 731 */ 732 void 733 wdunlock(wd) 734 struct wd_softc *wd; 735 { 736 737 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 738 739 wd->sc_flags &= ~WDF_LOCKED; 740 if ((wd->sc_flags & WDF_WANTED) != 0) { 741 wd->sc_flags &= ~WDF_WANTED; 742 wakeup(wd); 743 } 744 } 745 746 int 747 wdopen(dev, flag, fmt, p) 748 dev_t dev; 749 int flag, fmt; 750 struct proc *p; 751 { 752 struct wd_softc *wd; 753 int part, error; 754 755 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 756 wd = device_lookup(&wd_cd, WDUNIT(dev)); 757 if (wd == NULL) 758 return (ENXIO); 759 760 /* 761 * If this is the first open of this device, add a reference 762 * to the adapter. 763 */ 764 if (wd->sc_dk.dk_openmask == 0 && 765 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 766 return (error); 767 768 if ((error = wdlock(wd)) != 0) 769 goto bad4; 770 771 if (wd->sc_dk.dk_openmask != 0) { 772 /* 773 * If any partition is open, but the disk has been invalidated, 774 * disallow further opens. 775 */ 776 if ((wd->sc_flags & WDF_LOADED) == 0) { 777 error = EIO; 778 goto bad3; 779 } 780 } else { 781 if ((wd->sc_flags & WDF_LOADED) == 0) { 782 wd->sc_flags |= WDF_LOADED; 783 784 /* Load the physical device parameters. */ 785 wd_get_params(wd, AT_WAIT, &wd->sc_params); 786 787 /* Load the partition info if not already loaded. */ 788 wdgetdisklabel(wd); 789 } 790 } 791 792 part = WDPART(dev); 793 794 /* Check that the partition exists. */ 795 if (part != RAW_PART && 796 (part >= wd->sc_dk.dk_label->d_npartitions || 797 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 798 error = ENXIO; 799 goto bad; 800 } 801 802 /* Insure only one open at a time. */ 803 switch (fmt) { 804 case S_IFCHR: 805 wd->sc_dk.dk_copenmask |= (1 << part); 806 break; 807 case S_IFBLK: 808 wd->sc_dk.dk_bopenmask |= (1 << part); 809 break; 810 } 811 wd->sc_dk.dk_openmask = 812 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 813 814 wdunlock(wd); 815 return 0; 816 817 bad: 818 if (wd->sc_dk.dk_openmask == 0) { 819 } 820 821 bad3: 822 wdunlock(wd); 823 bad4: 824 if (wd->sc_dk.dk_openmask == 0) 825 wd->atabus->ata_delref(wd->drvp); 826 return error; 827 } 828 829 int 830 wdclose(dev, flag, fmt, p) 831 dev_t dev; 832 int flag, fmt; 833 struct proc *p; 834 { 835 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 836 int part = WDPART(dev); 837 int error; 838 839 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 840 if ((error = wdlock(wd)) != 0) 841 return error; 842 843 switch (fmt) { 844 case S_IFCHR: 845 wd->sc_dk.dk_copenmask &= ~(1 << part); 846 break; 847 case S_IFBLK: 848 wd->sc_dk.dk_bopenmask &= ~(1 << part); 849 break; 850 } 851 wd->sc_dk.dk_openmask = 852 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 853 854 if (wd->sc_dk.dk_openmask == 0) { 855 wd_flushcache(wd, AT_WAIT); 856 /* XXXX Must wait for I/O to complete! */ 857 858 if (! (wd->sc_flags & WDF_KLABEL)) 859 wd->sc_flags &= ~WDF_LOADED; 860 861 wd->atabus->ata_delref(wd->drvp); 862 } 863 864 wdunlock(wd); 865 return 0; 866 } 867 868 void 869 wdgetdefaultlabel(wd, lp) 870 struct wd_softc *wd; 871 struct disklabel *lp; 872 { 873 874 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 875 memset(lp, 0, sizeof(struct disklabel)); 876 877 lp->d_secsize = DEV_BSIZE; 878 lp->d_ntracks = wd->sc_params.atap_heads; 879 lp->d_nsectors = wd->sc_params.atap_sectors; 880 lp->d_ncylinders = wd->sc_params.atap_cylinders; 881 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 882 883 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 884 lp->d_type = DTYPE_ST506; 885 else 886 lp->d_type = DTYPE_ESDI; 887 888 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 889 strncpy(lp->d_packname, "fictitious", 16); 890 lp->d_secperunit = wd->sc_capacity; 891 lp->d_rpm = 3600; 892 lp->d_interleave = 1; 893 lp->d_flags = 0; 894 895 lp->d_partitions[RAW_PART].p_offset = 0; 896 lp->d_partitions[RAW_PART].p_size = 897 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 898 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 899 lp->d_npartitions = RAW_PART + 1; 900 901 lp->d_magic = DISKMAGIC; 902 lp->d_magic2 = DISKMAGIC; 903 lp->d_checksum = dkcksum(lp); 904 } 905 906 /* 907 * Fabricate a default disk label, and try to read the correct one. 908 */ 909 void 910 wdgetdisklabel(wd) 911 struct wd_softc *wd; 912 { 913 struct disklabel *lp = wd->sc_dk.dk_label; 914 char *errstring; 915 916 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 917 918 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 919 920 wdgetdefaultlabel(wd, lp); 921 922 wd->sc_badsect[0] = -1; 923 924 if (wd->drvp->state > RECAL) 925 wd->drvp->drive_flags |= DRIVE_RESET; 926 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 927 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 928 if (errstring) { 929 /* 930 * This probably happened because the drive's default 931 * geometry doesn't match the DOS geometry. We 932 * assume the DOS geometry is now in the label and try 933 * again. XXX This is a kluge. 934 */ 935 if (wd->drvp->state > RECAL) 936 wd->drvp->drive_flags |= DRIVE_RESET; 937 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 938 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 939 } 940 if (errstring) { 941 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 942 return; 943 } 944 945 if (wd->drvp->state > RECAL) 946 wd->drvp->drive_flags |= DRIVE_RESET; 947 #ifdef HAS_BAD144_HANDLING 948 if ((lp->d_flags & D_BADSECT) != 0) 949 bad144intern(wd); 950 #endif 951 } 952 953 void 954 wdperror(wd) 955 const struct wd_softc *wd; 956 { 957 static const char *const errstr0_3[] = {"address mark not found", 958 "track 0 not found", "aborted command", "media change requested", 959 "id not found", "media changed", "uncorrectable data error", 960 "bad block detected"}; 961 static const char *const errstr4_5[] = { 962 "obsolete (address mark not found)", 963 "no media/write protected", "aborted command", 964 "media change requested", "id not found", "media changed", 965 "uncorrectable data error", "interface CRC error"}; 966 const char *const *errstr; 967 int i; 968 char *sep = ""; 969 970 const char *devname = wd->sc_dev.dv_xname; 971 struct ata_drive_datas *drvp = wd->drvp; 972 int errno = wd->sc_wdc_bio.r_error; 973 974 if (drvp->ata_vers >= 4) 975 errstr = errstr4_5; 976 else 977 errstr = errstr0_3; 978 979 printf("%s: (", devname); 980 981 if (errno == 0) 982 printf("error not notified"); 983 984 for (i = 0; i < 8; i++) { 985 if (errno & (1 << i)) { 986 printf("%s%s", sep, errstr[i]); 987 sep = ", "; 988 } 989 } 990 printf(")\n"); 991 } 992 993 int 994 wdioctl(dev, xfer, addr, flag, p) 995 dev_t dev; 996 u_long xfer; 997 caddr_t addr; 998 int flag; 999 struct proc *p; 1000 { 1001 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1002 int error; 1003 #ifdef __HAVE_OLD_DISKLABEL 1004 struct disklabel newlabel; 1005 #endif 1006 1007 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1008 1009 if ((wd->sc_flags & WDF_LOADED) == 0) 1010 return EIO; 1011 1012 switch (xfer) { 1013 #ifdef HAS_BAD144_HANDLING 1014 case DIOCSBAD: 1015 if ((flag & FWRITE) == 0) 1016 return EBADF; 1017 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1018 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1019 bad144intern(wd); 1020 return 0; 1021 #endif 1022 1023 case DIOCGDINFO: 1024 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1025 return 0; 1026 #ifdef __HAVE_OLD_DISKLABEL 1027 case ODIOCGDINFO: 1028 newlabel = *(wd->sc_dk.dk_label); 1029 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1030 return ENOTTY; 1031 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1032 return 0; 1033 #endif 1034 1035 case DIOCGPART: 1036 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1037 ((struct partinfo *)addr)->part = 1038 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1039 return 0; 1040 1041 case DIOCWDINFO: 1042 case DIOCSDINFO: 1043 #ifdef __HAVE_OLD_DISKLABEL 1044 case ODIOCWDINFO: 1045 case ODIOCSDINFO: 1046 #endif 1047 { 1048 struct disklabel *lp; 1049 1050 #ifdef __HAVE_OLD_DISKLABEL 1051 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1052 memset(&newlabel, 0, sizeof newlabel); 1053 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1054 lp = &newlabel; 1055 } else 1056 #endif 1057 lp = (struct disklabel *)addr; 1058 1059 if ((flag & FWRITE) == 0) 1060 return EBADF; 1061 1062 if ((error = wdlock(wd)) != 0) 1063 return error; 1064 wd->sc_flags |= WDF_LABELLING; 1065 1066 error = setdisklabel(wd->sc_dk.dk_label, 1067 lp, /*wd->sc_dk.dk_openmask : */0, 1068 wd->sc_dk.dk_cpulabel); 1069 if (error == 0) { 1070 if (wd->drvp->state > RECAL) 1071 wd->drvp->drive_flags |= DRIVE_RESET; 1072 if (xfer == DIOCWDINFO 1073 #ifdef __HAVE_OLD_DISKLABEL 1074 || xfer == ODIOCWDINFO 1075 #endif 1076 ) 1077 error = writedisklabel(WDLABELDEV(dev), 1078 wdstrategy, wd->sc_dk.dk_label, 1079 wd->sc_dk.dk_cpulabel); 1080 } 1081 1082 wd->sc_flags &= ~WDF_LABELLING; 1083 wdunlock(wd); 1084 return error; 1085 } 1086 1087 case DIOCKLABEL: 1088 if (*(int *)addr) 1089 wd->sc_flags |= WDF_KLABEL; 1090 else 1091 wd->sc_flags &= ~WDF_KLABEL; 1092 return 0; 1093 1094 case DIOCWLABEL: 1095 if ((flag & FWRITE) == 0) 1096 return EBADF; 1097 if (*(int *)addr) 1098 wd->sc_flags |= WDF_WLABEL; 1099 else 1100 wd->sc_flags &= ~WDF_WLABEL; 1101 return 0; 1102 1103 case DIOCGDEFLABEL: 1104 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1105 return 0; 1106 #ifdef __HAVE_OLD_DISKLABEL 1107 case ODIOCGDEFLABEL: 1108 wdgetdefaultlabel(wd, &newlabel); 1109 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1110 return ENOTTY; 1111 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1112 return 0; 1113 #endif 1114 1115 #ifdef notyet 1116 case DIOCWFORMAT: 1117 if ((flag & FWRITE) == 0) 1118 return EBADF; 1119 { 1120 register struct format_op *fop; 1121 struct iovec aiov; 1122 struct uio auio; 1123 1124 fop = (struct format_op *)addr; 1125 aiov.iov_base = fop->df_buf; 1126 aiov.iov_len = fop->df_count; 1127 auio.uio_iov = &aiov; 1128 auio.uio_iovcnt = 1; 1129 auio.uio_resid = fop->df_count; 1130 auio.uio_segflg = 0; 1131 auio.uio_offset = 1132 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1133 auio.uio_procp = p; 1134 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1135 &auio); 1136 fop->df_count -= auio.uio_resid; 1137 fop->df_reg[0] = wdc->sc_status; 1138 fop->df_reg[1] = wdc->sc_error; 1139 return error; 1140 } 1141 #endif 1142 1143 case ATAIOCCOMMAND: 1144 /* 1145 * Make sure this command is (relatively) safe first 1146 */ 1147 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1148 (flag & FWRITE) == 0) 1149 return (EBADF); 1150 { 1151 struct wd_ioctl *wi; 1152 atareq_t *atareq = (atareq_t *) addr; 1153 int error; 1154 1155 wi = wi_get(); 1156 wi->wi_softc = wd; 1157 wi->wi_atareq = *atareq; 1158 1159 if (atareq->datalen && atareq->flags & 1160 (ATACMD_READ | ATACMD_WRITE)) { 1161 wi->wi_iov.iov_base = atareq->databuf; 1162 wi->wi_iov.iov_len = atareq->datalen; 1163 wi->wi_uio.uio_iov = &wi->wi_iov; 1164 wi->wi_uio.uio_iovcnt = 1; 1165 wi->wi_uio.uio_resid = atareq->datalen; 1166 wi->wi_uio.uio_offset = 0; 1167 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1168 wi->wi_uio.uio_rw = 1169 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1170 wi->wi_uio.uio_procp = p; 1171 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1172 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1173 minphys, &wi->wi_uio); 1174 } else { 1175 /* No need to call physio if we don't have any 1176 user data */ 1177 wi->wi_bp.b_flags = 0; 1178 wi->wi_bp.b_data = 0; 1179 wi->wi_bp.b_bcount = 0; 1180 wi->wi_bp.b_dev = 0; 1181 wi->wi_bp.b_proc = p; 1182 wdioctlstrategy(&wi->wi_bp); 1183 error = wi->wi_bp.b_error; 1184 } 1185 *atareq = wi->wi_atareq; 1186 wi_free(wi); 1187 return(error); 1188 } 1189 1190 default: 1191 return ENOTTY; 1192 } 1193 1194 #ifdef DIAGNOSTIC 1195 panic("wdioctl: impossible"); 1196 #endif 1197 } 1198 1199 #ifdef B_FORMAT 1200 int 1201 wdformat(struct buf *bp) 1202 { 1203 1204 bp->b_flags |= B_FORMAT; 1205 return wdstrategy(bp); 1206 } 1207 #endif 1208 1209 int 1210 wdsize(dev) 1211 dev_t dev; 1212 { 1213 struct wd_softc *wd; 1214 int part, omask; 1215 int size; 1216 1217 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1218 1219 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1220 if (wd == NULL) 1221 return (-1); 1222 1223 part = WDPART(dev); 1224 omask = wd->sc_dk.dk_openmask & (1 << part); 1225 1226 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1227 return (-1); 1228 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1229 size = -1; 1230 else 1231 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1232 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1233 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1234 return (-1); 1235 return (size); 1236 } 1237 1238 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1239 static int wddoingadump = 0; 1240 static int wddumprecalibrated = 0; 1241 static int wddumpmulti = 1; 1242 1243 /* 1244 * Dump core after a system crash. 1245 */ 1246 int 1247 wddump(dev, blkno, va, size) 1248 dev_t dev; 1249 daddr_t blkno; 1250 caddr_t va; 1251 size_t size; 1252 { 1253 struct wd_softc *wd; /* disk unit to do the I/O */ 1254 struct disklabel *lp; /* disk's disklabel */ 1255 int part, err; 1256 int nblks; /* total number of sectors left to write */ 1257 1258 /* Check if recursive dump; if so, punt. */ 1259 if (wddoingadump) 1260 return EFAULT; 1261 wddoingadump = 1; 1262 1263 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1264 if (wd == NULL) 1265 return (ENXIO); 1266 1267 part = WDPART(dev); 1268 1269 /* Convert to disk sectors. Request must be a multiple of size. */ 1270 lp = wd->sc_dk.dk_label; 1271 if ((size % lp->d_secsize) != 0) 1272 return EFAULT; 1273 nblks = size / lp->d_secsize; 1274 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1275 1276 /* Check transfer bounds against partition size. */ 1277 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1278 return EINVAL; 1279 1280 /* Offset block number to start of partition. */ 1281 blkno += lp->d_partitions[part].p_offset; 1282 1283 /* Recalibrate, if first dump transfer. */ 1284 if (wddumprecalibrated == 0) { 1285 wddumpmulti = wd->sc_multi; 1286 wddumprecalibrated = 1; 1287 wd->drvp->state = RESET; 1288 } 1289 1290 while (nblks > 0) { 1291 again: 1292 wd->sc_bp = NULL; 1293 wd->sc_wdc_bio.blkno = blkno; 1294 wd->sc_wdc_bio.flags = ATA_POLL; 1295 if (wddumpmulti == 1) 1296 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1297 if (wd->sc_flags & WDF_LBA48) 1298 wd->sc_wdc_bio.flags |= ATA_LBA48; 1299 if (wd->sc_flags & WDF_LBA) 1300 wd->sc_wdc_bio.flags |= ATA_LBA; 1301 wd->sc_wdc_bio.bcount = 1302 min(nblks, wddumpmulti) * lp->d_secsize; 1303 wd->sc_wdc_bio.databuf = va; 1304 #ifndef WD_DUMP_NOT_TRUSTED 1305 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1306 case WDC_TRY_AGAIN: 1307 panic("wddump: try again"); 1308 break; 1309 case WDC_QUEUED: 1310 panic("wddump: polled command has been queued"); 1311 break; 1312 case WDC_COMPLETE: 1313 break; 1314 } 1315 switch(wd->sc_wdc_bio.error) { 1316 case TIMEOUT: 1317 printf("wddump: device timed out"); 1318 err = EIO; 1319 break; 1320 case ERR_DF: 1321 printf("wddump: drive fault"); 1322 err = EIO; 1323 break; 1324 case ERR_DMA: 1325 printf("wddump: DMA error"); 1326 err = EIO; 1327 break; 1328 case ERROR: 1329 printf("wddump: "); 1330 wdperror(wd); 1331 err = EIO; 1332 break; 1333 case NOERROR: 1334 err = 0; 1335 break; 1336 default: 1337 panic("wddump: unknown error type"); 1338 } 1339 if (err != 0) { 1340 if (wddumpmulti != 1) { 1341 wddumpmulti = 1; /* retry in single-sector */ 1342 printf(", retrying\n"); 1343 goto again; 1344 } 1345 printf("\n"); 1346 return err; 1347 } 1348 #else /* WD_DUMP_NOT_TRUSTED */ 1349 /* Let's just talk about this first... */ 1350 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1351 unit, va, cylin, head, sector); 1352 delay(500 * 1000); /* half a second */ 1353 #endif 1354 1355 /* update block count */ 1356 nblks -= min(nblks, wddumpmulti); 1357 blkno += min(nblks, wddumpmulti); 1358 va += min(nblks, wddumpmulti) * lp->d_secsize; 1359 } 1360 1361 wddoingadump = 0; 1362 return 0; 1363 } 1364 1365 #ifdef HAS_BAD144_HANDLING 1366 /* 1367 * Internalize the bad sector table. 1368 */ 1369 void 1370 bad144intern(wd) 1371 struct wd_softc *wd; 1372 { 1373 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1374 struct disklabel *lp = wd->sc_dk.dk_label; 1375 int i = 0; 1376 1377 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1378 1379 for (; i < NBT_BAD; i++) { 1380 if (bt->bt_bad[i].bt_cyl == 0xffff) 1381 break; 1382 wd->sc_badsect[i] = 1383 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1384 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1385 (bt->bt_bad[i].bt_trksec & 0xff); 1386 } 1387 for (; i < NBT_BAD+1; i++) 1388 wd->sc_badsect[i] = -1; 1389 } 1390 #endif 1391 1392 int 1393 wd_get_params(wd, flags, params) 1394 struct wd_softc *wd; 1395 u_int8_t flags; 1396 struct ataparams *params; 1397 { 1398 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1399 case CMD_AGAIN: 1400 return 1; 1401 case CMD_ERR: 1402 /* 1403 * We `know' there's a drive here; just assume it's old. 1404 * This geometry is only used to read the MBR and print a 1405 * (false) attach message. 1406 */ 1407 strncpy(params->atap_model, "ST506", 1408 sizeof params->atap_model); 1409 params->atap_config = ATA_CFG_FIXED; 1410 params->atap_cylinders = 1024; 1411 params->atap_heads = 8; 1412 params->atap_sectors = 17; 1413 params->atap_multi = 1; 1414 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1415 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1416 return 0; 1417 case CMD_OK: 1418 return 0; 1419 default: 1420 panic("wd_get_params: bad return code from ata_get_params"); 1421 /* NOTREACHED */ 1422 } 1423 } 1424 1425 void 1426 wd_flushcache(wd, flags) 1427 struct wd_softc *wd; 1428 int flags; 1429 { 1430 struct wdc_command wdc_c; 1431 1432 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1433 return; 1434 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1435 wdc_c.r_command = WDCC_FLUSHCACHE; 1436 wdc_c.r_st_bmask = WDCS_DRDY; 1437 wdc_c.r_st_pmask = WDCS_DRDY; 1438 wdc_c.flags = flags; 1439 wdc_c.timeout = 30000; /* 30s timeout */ 1440 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1441 printf("%s: flush cache command didn't complete\n", 1442 wd->sc_dev.dv_xname); 1443 } 1444 if (wdc_c.flags & AT_TIMEOU) { 1445 printf("%s: flush cache command timeout\n", 1446 wd->sc_dev.dv_xname); 1447 } 1448 if (wdc_c.flags & AT_DF) { 1449 printf("%s: flush cache command: drive fault\n", 1450 wd->sc_dev.dv_xname); 1451 } 1452 /* 1453 * Ignore error register, it shouldn't report anything else 1454 * than COMMAND ABORTED, which means the device doesn't support 1455 * flush cache 1456 */ 1457 } 1458 1459 void 1460 wd_shutdown(arg) 1461 void *arg; 1462 { 1463 struct wd_softc *wd = arg; 1464 wd_flushcache(wd, AT_POLL); 1465 } 1466 1467 /* 1468 * Allocate space for a ioctl queue structure. Mostly taken from 1469 * scsipi_ioctl.c 1470 */ 1471 struct wd_ioctl * 1472 wi_get() 1473 { 1474 struct wd_ioctl *wi; 1475 int s; 1476 1477 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1478 s = splbio(); 1479 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1480 splx(s); 1481 return (wi); 1482 } 1483 1484 /* 1485 * Free an ioctl structure and remove it from our list 1486 */ 1487 1488 void 1489 wi_free(wi) 1490 struct wd_ioctl *wi; 1491 { 1492 int s; 1493 1494 s = splbio(); 1495 LIST_REMOVE(wi, wi_list); 1496 splx(s); 1497 free(wi, M_TEMP); 1498 } 1499 1500 /* 1501 * Find a wd_ioctl structure based on the struct buf. 1502 */ 1503 1504 struct wd_ioctl * 1505 wi_find(bp) 1506 struct buf *bp; 1507 { 1508 struct wd_ioctl *wi; 1509 int s; 1510 1511 s = splbio(); 1512 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1513 if (bp == &wi->wi_bp) 1514 break; 1515 splx(s); 1516 return (wi); 1517 } 1518 1519 /* 1520 * Ioctl pseudo strategy routine 1521 * 1522 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1523 * happens here is: 1524 * 1525 * - wdioctl() queues a wd_ioctl structure. 1526 * 1527 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1528 * user space I/O is required. If physio() is called, physio() eventually 1529 * calls wdioctlstrategy(). 1530 * 1531 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1532 * to perform the actual command 1533 * 1534 * The reason for the use of the pseudo strategy routine is because 1535 * when doing I/O to/from user space, physio _really_ wants to be in 1536 * the loop. We could put the entire buffer into the ioctl request 1537 * structure, but that won't scale if we want to do things like download 1538 * microcode. 1539 */ 1540 1541 void 1542 wdioctlstrategy(bp) 1543 struct buf *bp; 1544 { 1545 struct wd_ioctl *wi; 1546 struct wdc_command wdc_c; 1547 int error = 0; 1548 1549 wi = wi_find(bp); 1550 if (wi == NULL) { 1551 printf("user_strat: No ioctl\n"); 1552 error = EINVAL; 1553 goto bad; 1554 } 1555 1556 memset(&wdc_c, 0, sizeof(wdc_c)); 1557 1558 /* 1559 * Abort if physio broke up the transfer 1560 */ 1561 1562 if (bp->b_bcount != wi->wi_atareq.datalen) { 1563 printf("physio split wd ioctl request... cannot proceed\n"); 1564 error = EIO; 1565 goto bad; 1566 } 1567 1568 /* 1569 * Abort if we didn't get a buffer size that was a multiple of 1570 * our sector size (or was larger than NBBY) 1571 */ 1572 1573 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1574 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1575 (1 << NBBY)) { 1576 error = EINVAL; 1577 goto bad; 1578 } 1579 1580 /* 1581 * Make sure a timeout was supplied in the ioctl request 1582 */ 1583 1584 if (wi->wi_atareq.timeout == 0) { 1585 error = EINVAL; 1586 goto bad; 1587 } 1588 1589 if (wi->wi_atareq.flags & ATACMD_READ) 1590 wdc_c.flags |= AT_READ; 1591 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1592 wdc_c.flags |= AT_WRITE; 1593 1594 if (wi->wi_atareq.flags & ATACMD_READREG) 1595 wdc_c.flags |= AT_READREG; 1596 1597 wdc_c.flags |= AT_WAIT; 1598 1599 wdc_c.timeout = wi->wi_atareq.timeout; 1600 wdc_c.r_command = wi->wi_atareq.command; 1601 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1602 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1603 wdc_c.r_sector = wi->wi_atareq.sec_num; 1604 wdc_c.r_count = wi->wi_atareq.sec_count; 1605 wdc_c.r_precomp = wi->wi_atareq.features; 1606 wdc_c.r_st_bmask = WDCS_DRDY; 1607 wdc_c.r_st_pmask = WDCS_DRDY; 1608 wdc_c.data = wi->wi_bp.b_data; 1609 wdc_c.bcount = wi->wi_bp.b_bcount; 1610 1611 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1612 != WDC_COMPLETE) { 1613 wi->wi_atareq.retsts = ATACMD_ERROR; 1614 goto bad; 1615 } 1616 1617 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1618 if (wdc_c.flags & AT_ERROR) { 1619 wi->wi_atareq.retsts = ATACMD_ERROR; 1620 wi->wi_atareq.error = wdc_c.r_error; 1621 } else if (wdc_c.flags & AT_DF) 1622 wi->wi_atareq.retsts = ATACMD_DF; 1623 else 1624 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1625 } else { 1626 wi->wi_atareq.retsts = ATACMD_OK; 1627 if (wi->wi_atareq.flags & ATACMD_READREG) { 1628 wi->wi_atareq.head = wdc_c.r_head ; 1629 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1630 wi->wi_atareq.sec_num = wdc_c.r_sector; 1631 wi->wi_atareq.sec_count = wdc_c.r_count; 1632 wi->wi_atareq.features = wdc_c.r_precomp; 1633 wi->wi_atareq.error = wdc_c.r_error; 1634 } 1635 } 1636 1637 bp->b_error = 0; 1638 biodone(bp); 1639 return; 1640 bad: 1641 bp->b_flags |= B_ERROR; 1642 bp->b_error = error; 1643 biodone(bp); 1644 } 1645
Indexes created Fri Sep 26 20:09:58 GMT 2025