wd.c revision 1.231
1 /* $NetBSD: wd.c,v 1.231 2002/10/23 09:13:07 jdolecek 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 1.231 2002/10/23 09:13:07 jdolecek Exp $"); 70 71 #ifndef WDCDEBUG 72 #define WDCDEBUG 73 #endif /* WDCDEBUG */ 74 75 #include "opt_bufq.h" 76 #include "rnd.h" 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/conf.h> 82 #include <sys/file.h> 83 #include <sys/stat.h> 84 #include <sys/ioctl.h> 85 #include <sys/buf.h> 86 #include <sys/uio.h> 87 #include <sys/malloc.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/disk.h> 91 #include <sys/syslog.h> 92 #include <sys/proc.h> 93 #include <sys/vnode.h> 94 #if NRND > 0 95 #include <sys/rnd.h> 96 #endif 97 98 #include <machine/intr.h> 99 #include <machine/bus.h> 100 101 #include <dev/ata/atareg.h> 102 #include <dev/ata/atavar.h> 103 #include <dev/ata/wdvar.h> 104 #include <dev/ic/wdcreg.h> 105 #include <sys/ataio.h> 106 #include "locators.h" 107 108 #define WAITTIME (4 * hz) /* time to wait for a completion */ 109 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 110 #define WDIORETRIES 5 /* number of retries before giving up */ 111 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 112 113 #define WDUNIT(dev) DISKUNIT(dev) 114 #define WDPART(dev) DISKPART(dev) 115 #define WDMINOR(unit, part) DISKMINOR(unit, part) 116 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 117 118 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 119 120 #define DEBUG_INTR 0x01 121 #define DEBUG_XFERS 0x02 122 #define DEBUG_STATUS 0x04 123 #define DEBUG_FUNCS 0x08 124 #define DEBUG_PROBE 0x10 125 #ifdef WDCDEBUG 126 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 127 #define WDCDEBUG_PRINT(args, level) \ 128 if (wdcdebug_wd_mask & (level)) \ 129 printf args 130 #else 131 #define WDCDEBUG_PRINT(args, level) 132 #endif 133 134 struct wd_softc { 135 /* General disk infos */ 136 struct device sc_dev; 137 struct disk sc_dk; 138 struct bufq_state sc_q; 139 struct callout sc_restart_ch; 140 /* IDE disk soft states */ 141 struct ata_bio sc_wdc_bio; /* current transfer */ 142 struct buf *sc_bp; /* buf being transfered */ 143 void *wdc_softc; /* pointer to our parent */ 144 struct ata_drive_datas *drvp; /* Our controller's infos */ 145 const struct ata_bustype *atabus; 146 int openings; 147 struct ataparams sc_params;/* drive characteistics found */ 148 int sc_flags; 149 #define WDF_LOCKED 0x001 150 #define WDF_WANTED 0x002 151 #define WDF_WLABEL 0x004 /* label is writable */ 152 #define WDF_LABELLING 0x008 /* writing label */ 153 /* 154 * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is 155 * more fully implemented. 156 */ 157 #define WDF_LOADED 0x010 /* parameters loaded */ 158 #define WDF_WAIT 0x020 /* waiting for resources */ 159 #define WDF_LBA 0x040 /* using LBA mode */ 160 #define WDF_KLABEL 0x080 /* retain label after 'full' close */ 161 #define WDF_LBA48 0x100 /* using 48-bit LBA mode */ 162 int sc_capacity; 163 int cyl; /* actual drive parameters */ 164 int heads; 165 int sectors; 166 int retries; /* number of xfer retry */ 167 168 void *sc_sdhook; /* our shutdown hook */ 169 170 #if NRND > 0 171 rndsource_element_t rnd_source; 172 #endif 173 }; 174 175 #define sc_drive sc_wdc_bio.drive 176 #define sc_mode sc_wdc_bio.mode 177 #define sc_multi sc_wdc_bio.multi 178 #define sc_badsect sc_wdc_bio.badsect 179 180 int wdprobe __P((struct device *, struct cfdata *, void *)); 181 void wdattach __P((struct device *, struct device *, void *)); 182 int wddetach __P((struct device *, int)); 183 int wdactivate __P((struct device *, enum devact)); 184 int wdprint __P((void *, char *)); 185 void wdperror __P((const struct wd_softc *)); 186 187 CFATTACH_DECL(wd, sizeof(struct wd_softc), 188 wdprobe, wdattach, wddetach, wdactivate); 189 190 extern struct cfdriver wd_cd; 191 192 dev_type_open(wdopen); 193 dev_type_close(wdclose); 194 dev_type_read(wdread); 195 dev_type_write(wdwrite); 196 dev_type_ioctl(wdioctl); 197 dev_type_strategy(wdstrategy); 198 dev_type_dump(wddump); 199 dev_type_size(wdsize); 200 201 const struct bdevsw wd_bdevsw = { 202 wdopen, wdclose, wdstrategy, wdioctl, wddump, wdsize, D_DISK 203 }; 204 205 const struct cdevsw wd_cdevsw = { 206 wdopen, wdclose, wdread, wdwrite, wdioctl, 207 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 208 }; 209 210 /* 211 * Glue necessary to hook WDCIOCCOMMAND into physio 212 */ 213 214 struct wd_ioctl { 215 LIST_ENTRY(wd_ioctl) wi_list; 216 struct buf wi_bp; 217 struct uio wi_uio; 218 struct iovec wi_iov; 219 atareq_t wi_atareq; 220 struct wd_softc *wi_softc; 221 }; 222 223 LIST_HEAD(, wd_ioctl) wi_head; 224 225 struct wd_ioctl *wi_find __P((struct buf *)); 226 void wi_free __P((struct wd_ioctl *)); 227 struct wd_ioctl *wi_get __P((void)); 228 void wdioctlstrategy __P((struct buf *)); 229 230 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 231 void wdgetdisklabel __P((struct wd_softc *)); 232 void wdstart __P((void *)); 233 void __wdstart __P((struct wd_softc*, struct buf *)); 234 void wdrestart __P((void*)); 235 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 236 void wd_flushcache __P((struct wd_softc *, int)); 237 void wd_shutdown __P((void*)); 238 239 struct dkdriver wddkdriver = { wdstrategy }; 240 241 #ifdef HAS_BAD144_HANDLING 242 static void bad144intern __P((struct wd_softc *)); 243 #endif 244 int wdlock __P((struct wd_softc *)); 245 void wdunlock __P((struct wd_softc *)); 246 247 int 248 wdprobe(parent, match, aux) 249 struct device *parent; 250 struct cfdata *match; 251 252 void *aux; 253 { 254 struct ata_device *adev = aux; 255 256 if (adev == NULL) 257 return 0; 258 if (adev->adev_bustype->bustype_type != SCSIPI_BUSTYPE_ATA) 259 return 0; 260 261 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 262 match->cf_loc[ATACF_CHANNEL] != adev->adev_channel) 263 return 0; 264 265 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 266 match->cf_loc[ATACF_DRIVE] != adev->adev_drv_data->drive) 267 return 0; 268 return 1; 269 } 270 271 void 272 wdattach(parent, self, aux) 273 struct device *parent, *self; 274 void *aux; 275 { 276 struct wd_softc *wd = (void *)self; 277 struct ata_device *adev= aux; 278 int i, blank; 279 char buf[41], pbuf[9], c, *p, *q; 280 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 281 282 callout_init(&wd->sc_restart_ch); 283 #ifdef NEW_BUFQ_STRATEGY 284 bufq_alloc(&wd->sc_q, BUFQ_READ_PRIO|BUFQ_SORT_RAWBLOCK); 285 #else 286 bufq_alloc(&wd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 287 #endif 288 289 wd->atabus = adev->adev_bustype; 290 wd->openings = adev->adev_openings; 291 wd->drvp = adev->adev_drv_data;; 292 wd->wdc_softc = parent; 293 /* give back our softc to our caller */ 294 wd->drvp->drv_softc = &wd->sc_dev; 295 296 /* read our drive info */ 297 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 298 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 299 return; 300 } 301 302 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 303 i < sizeof(wd->sc_params.atap_model); i++) { 304 c = *p++; 305 if (c == '\0') 306 break; 307 if (c != ' ') { 308 if (blank) { 309 *q++ = ' '; 310 blank = 0; 311 } 312 *q++ = c; 313 } else 314 blank = 1; 315 } 316 *q++ = '\0'; 317 318 printf(": <%s>\n", buf); 319 320 if ((wd->sc_params.atap_multi & 0xff) > 1) { 321 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 322 } else { 323 wd->sc_multi = 1; 324 } 325 326 printf("%s: drive supports %d-sector PIO transfers,", 327 wd->sc_dev.dv_xname, wd->sc_multi); 328 329 /* 48-bit LBA addressing */ 330 if ((wd->sc_params.atap_cmd2_en & WDC_CAP_LBA48) != 0) 331 wd->sc_flags |= WDF_LBA48; 332 333 /* Prior to ATA-4, LBA was optional. */ 334 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 335 wd->sc_flags |= WDF_LBA; 336 #if 0 337 /* ATA-4 requires LBA. */ 338 if (wd->sc_params.atap_ataversion != 0xffff && 339 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 340 wd->sc_flags |= WDF_LBA; 341 #endif 342 343 if ((wd->sc_flags & WDF_LBA48) != 0) { 344 printf(" LBA48 addressing\n"); 345 wd->sc_capacity = 346 ((u_int64_t) wd->sc_params.__reserved6[11] << 48) | 347 ((u_int64_t) wd->sc_params.__reserved6[10] << 32) | 348 ((u_int64_t) wd->sc_params.__reserved6[9] << 16) | 349 ((u_int64_t) wd->sc_params.__reserved6[8] << 0); 350 } else if ((wd->sc_flags & WDF_LBA) != 0) { 351 printf(" LBA addressing\n"); 352 wd->sc_capacity = 353 (wd->sc_params.atap_capacity[1] << 16) | 354 wd->sc_params.atap_capacity[0]; 355 } else { 356 printf(" chs addressing\n"); 357 wd->sc_capacity = 358 wd->sc_params.atap_cylinders * 359 wd->sc_params.atap_heads * 360 wd->sc_params.atap_sectors; 361 } 362 format_bytes(pbuf, sizeof(pbuf), 363 (u_int64_t)wd->sc_capacity * DEV_BSIZE); 364 printf("%s: %s, %d cyl, %d head, %d sec, " 365 "%d bytes/sect x %d sectors\n", 366 self->dv_xname, pbuf, wd->sc_params.atap_cylinders, 367 wd->sc_params.atap_heads, wd->sc_params.atap_sectors, 368 DEV_BSIZE, wd->sc_capacity); 369 370 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 371 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 372 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 373 /* 374 * Initialize and attach the disk structure. 375 */ 376 wd->sc_dk.dk_driver = &wddkdriver; 377 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 378 disk_attach(&wd->sc_dk); 379 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 380 wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); 381 if (wd->sc_sdhook == NULL) 382 printf("%s: WARNING: unable to establish shutdown hook\n", 383 wd->sc_dev.dv_xname); 384 #if NRND > 0 385 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, 386 RND_TYPE_DISK, 0); 387 #endif 388 } 389 390 int 391 wdactivate(self, act) 392 struct device *self; 393 enum devact act; 394 { 395 int rv = 0; 396 397 switch (act) { 398 case DVACT_ACTIVATE: 399 rv = EOPNOTSUPP; 400 break; 401 402 case DVACT_DEACTIVATE: 403 /* 404 * Nothing to do; we key off the device's DVF_ACTIVATE. 405 */ 406 break; 407 } 408 return (rv); 409 } 410 411 int 412 wddetach(self, flags) 413 struct device *self; 414 int flags; 415 { 416 struct wd_softc *sc = (struct wd_softc *)self; 417 struct buf *bp; 418 int s, bmaj, cmaj, i, mn; 419 420 /* locate the major number */ 421 bmaj = bdevsw_lookup_major(&wd_bdevsw); 422 cmaj = cdevsw_lookup_major(&wd_cdevsw); 423 424 s = splbio(); 425 426 /* Kill off any queued buffers. */ 427 while ((bp = BUFQ_GET(&sc->sc_q)) != NULL) { 428 bp->b_error = EIO; 429 bp->b_flags |= B_ERROR; 430 bp->b_resid = bp->b_bcount; 431 biodone(bp); 432 } 433 434 bufq_free(&sc->sc_q); 435 436 splx(s); 437 438 /* Nuke the vnodes for any open instances. */ 439 for (i = 0; i < MAXPARTITIONS; i++) { 440 mn = WDMINOR(self->dv_unit, i); 441 vdevgone(bmaj, mn, mn, VBLK); 442 vdevgone(cmaj, mn, mn, VCHR); 443 } 444 445 /* Detach disk. */ 446 disk_detach(&sc->sc_dk); 447 448 /* Get rid of the shutdown hook. */ 449 if (sc->sc_sdhook != NULL) 450 shutdownhook_disestablish(sc->sc_sdhook); 451 452 #if NRND > 0 453 /* Unhook the entropy source. */ 454 rnd_detach_source(&sc->rnd_source); 455 #endif 456 457 return (0); 458 } 459 460 /* 461 * Read/write routine for a buffer. Validates the arguments and schedules the 462 * transfer. Does not wait for the transfer to complete. 463 */ 464 void 465 wdstrategy(bp) 466 struct buf *bp; 467 { 468 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(bp->b_dev)); 469 struct disklabel *lp = wd->sc_dk.dk_label; 470 daddr_t blkno; 471 int s; 472 473 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 474 DEBUG_XFERS); 475 476 /* Valid request? */ 477 if (bp->b_blkno < 0 || 478 (bp->b_bcount % lp->d_secsize) != 0 || 479 (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { 480 bp->b_error = EINVAL; 481 goto bad; 482 } 483 484 /* If device invalidated (e.g. media change, door open), error. */ 485 if ((wd->sc_flags & WDF_LOADED) == 0) { 486 bp->b_error = EIO; 487 goto bad; 488 } 489 490 /* If it's a null transfer, return immediately. */ 491 if (bp->b_bcount == 0) 492 goto done; 493 494 /* 495 * Do bounds checking, adjust transfer. if error, process. 496 * If end of partition, just return. 497 */ 498 if (WDPART(bp->b_dev) != RAW_PART && 499 bounds_check_with_label(bp, wd->sc_dk.dk_label, 500 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 501 goto done; 502 503 /* 504 * Now convert the block number to absolute and put it in 505 * terms of the device's logical block size. 506 */ 507 if (lp->d_secsize >= DEV_BSIZE) 508 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 509 else 510 blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); 511 512 if (WDPART(bp->b_dev) != RAW_PART) 513 blkno += lp->d_partitions[WDPART(bp->b_dev)].p_offset; 514 515 bp->b_rawblkno = blkno; 516 517 /* Queue transfer on drive, activate drive and controller if idle. */ 518 s = splbio(); 519 BUFQ_PUT(&wd->sc_q, bp); 520 wdstart(wd); 521 splx(s); 522 return; 523 bad: 524 bp->b_flags |= B_ERROR; 525 done: 526 /* Toss transfer; we're done early. */ 527 bp->b_resid = bp->b_bcount; 528 biodone(bp); 529 } 530 531 /* 532 * Queue a drive for I/O. 533 */ 534 void 535 wdstart(arg) 536 void *arg; 537 { 538 struct wd_softc *wd = arg; 539 struct buf *bp = NULL; 540 541 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 542 DEBUG_XFERS); 543 while (wd->openings > 0) { 544 545 /* Is there a buf for us ? */ 546 if ((bp = BUFQ_GET(&wd->sc_q)) == NULL) 547 return; 548 549 /* 550 * Make the command. First lock the device 551 */ 552 wd->openings--; 553 554 wd->retries = 0; 555 __wdstart(wd, bp); 556 } 557 } 558 559 void 560 __wdstart(wd, bp) 561 struct wd_softc *wd; 562 struct buf *bp; 563 { 564 565 wd->sc_wdc_bio.blkno = bp->b_rawblkno; 566 wd->sc_wdc_bio.blkdone =0; 567 wd->sc_bp = bp; 568 /* 569 * If we're retrying, retry in single-sector mode. This will give us 570 * the sector number of the problem, and will eventually allow the 571 * transfer to succeed. 572 */ 573 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 574 wd->sc_wdc_bio.flags = ATA_SINGLE; 575 else 576 wd->sc_wdc_bio.flags = 0; 577 if (wd->sc_flags & WDF_LBA48) 578 wd->sc_wdc_bio.flags |= ATA_LBA48; 579 if (wd->sc_flags & WDF_LBA) 580 wd->sc_wdc_bio.flags |= ATA_LBA; 581 if (bp->b_flags & B_READ) 582 wd->sc_wdc_bio.flags |= ATA_READ; 583 wd->sc_wdc_bio.bcount = bp->b_bcount; 584 wd->sc_wdc_bio.databuf = bp->b_data; 585 /* Instrumentation. */ 586 disk_busy(&wd->sc_dk); 587 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 588 case WDC_TRY_AGAIN: 589 callout_reset(&wd->sc_restart_ch, hz, wdrestart, wd); 590 break; 591 case WDC_QUEUED: 592 case WDC_COMPLETE: 593 break; 594 default: 595 panic("__wdstart: bad return code from ata_bio()"); 596 } 597 } 598 599 void 600 wddone(v) 601 void *v; 602 { 603 struct wd_softc *wd = v; 604 struct buf *bp = wd->sc_bp; 605 const char *errmsg; 606 int do_perror = 0; 607 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 608 DEBUG_XFERS); 609 610 if (bp == NULL) 611 return; 612 bp->b_resid = wd->sc_wdc_bio.bcount; 613 switch (wd->sc_wdc_bio.error) { 614 case ERR_DMA: 615 errmsg = "DMA error"; 616 goto retry; 617 case ERR_DF: 618 errmsg = "device fault"; 619 goto retry; 620 case TIMEOUT: 621 errmsg = "device timeout"; 622 goto retry; 623 case ERROR: 624 /* Don't care about media change bits */ 625 if (wd->sc_wdc_bio.r_error != 0 && 626 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 627 goto noerror; 628 errmsg = "error"; 629 do_perror = 1; 630 retry: /* Just reset and retry. Can we do more ? */ 631 wd->atabus->ata_reset_channel(wd->drvp); 632 diskerr(bp, "wd", errmsg, LOG_PRINTF, 633 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 634 if (wd->retries < WDIORETRIES) 635 printf(", retrying\n"); 636 if (do_perror) 637 wdperror(wd); 638 if (wd->retries < WDIORETRIES) { 639 wd->retries++; 640 callout_reset(&wd->sc_restart_ch, RECOVERYTIME, 641 wdrestart, wd); 642 return; 643 } 644 printf("\n"); 645 bp->b_flags |= B_ERROR; 646 bp->b_error = EIO; 647 break; 648 case NOERROR: 649 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 650 printf("%s: soft error (corrected)\n", 651 wd->sc_dev.dv_xname); 652 break; 653 case ERR_NODEV: 654 bp->b_flags |= B_ERROR; 655 bp->b_error = EIO; 656 break; 657 } 658 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 659 #if NRND > 0 660 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 661 #endif 662 biodone(bp); 663 wd->openings++; 664 wdstart(wd); 665 } 666 667 void 668 wdrestart(v) 669 void *v; 670 { 671 struct wd_softc *wd = v; 672 struct buf *bp = wd->sc_bp; 673 int s; 674 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 675 DEBUG_XFERS); 676 677 s = splbio(); 678 __wdstart(v, bp); 679 splx(s); 680 } 681 682 int 683 wdread(dev, uio, flags) 684 dev_t dev; 685 struct uio *uio; 686 int flags; 687 { 688 689 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 690 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 691 } 692 693 int 694 wdwrite(dev, uio, flags) 695 dev_t dev; 696 struct uio *uio; 697 int flags; 698 { 699 700 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 701 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 702 } 703 704 /* 705 * Wait interruptibly for an exclusive lock. 706 * 707 * XXX 708 * Several drivers do this; it should be abstracted and made MP-safe. 709 */ 710 int 711 wdlock(wd) 712 struct wd_softc *wd; 713 { 714 int error; 715 int s; 716 717 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 718 719 s = splbio(); 720 721 while ((wd->sc_flags & WDF_LOCKED) != 0) { 722 wd->sc_flags |= WDF_WANTED; 723 if ((error = tsleep(wd, PRIBIO | PCATCH, 724 "wdlck", 0)) != 0) { 725 splx(s); 726 return error; 727 } 728 } 729 wd->sc_flags |= WDF_LOCKED; 730 splx(s); 731 return 0; 732 } 733 734 /* 735 * Unlock and wake up any waiters. 736 */ 737 void 738 wdunlock(wd) 739 struct wd_softc *wd; 740 { 741 742 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 743 744 wd->sc_flags &= ~WDF_LOCKED; 745 if ((wd->sc_flags & WDF_WANTED) != 0) { 746 wd->sc_flags &= ~WDF_WANTED; 747 wakeup(wd); 748 } 749 } 750 751 int 752 wdopen(dev, flag, fmt, p) 753 dev_t dev; 754 int flag, fmt; 755 struct proc *p; 756 { 757 struct wd_softc *wd; 758 int part, error; 759 760 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 761 wd = device_lookup(&wd_cd, WDUNIT(dev)); 762 if (wd == NULL) 763 return (ENXIO); 764 765 /* 766 * If this is the first open of this device, add a reference 767 * to the adapter. 768 */ 769 if (wd->sc_dk.dk_openmask == 0 && 770 (error = wd->atabus->ata_addref(wd->drvp)) != 0) 771 return (error); 772 773 if ((error = wdlock(wd)) != 0) 774 goto bad4; 775 776 if (wd->sc_dk.dk_openmask != 0) { 777 /* 778 * If any partition is open, but the disk has been invalidated, 779 * disallow further opens. 780 */ 781 if ((wd->sc_flags & WDF_LOADED) == 0) { 782 error = EIO; 783 goto bad3; 784 } 785 } else { 786 if ((wd->sc_flags & WDF_LOADED) == 0) { 787 wd->sc_flags |= WDF_LOADED; 788 789 /* Load the physical device parameters. */ 790 wd_get_params(wd, AT_WAIT, &wd->sc_params); 791 792 /* Load the partition info if not already loaded. */ 793 wdgetdisklabel(wd); 794 } 795 } 796 797 part = WDPART(dev); 798 799 /* Check that the partition exists. */ 800 if (part != RAW_PART && 801 (part >= wd->sc_dk.dk_label->d_npartitions || 802 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 803 error = ENXIO; 804 goto bad; 805 } 806 807 /* Insure only one open at a time. */ 808 switch (fmt) { 809 case S_IFCHR: 810 wd->sc_dk.dk_copenmask |= (1 << part); 811 break; 812 case S_IFBLK: 813 wd->sc_dk.dk_bopenmask |= (1 << part); 814 break; 815 } 816 wd->sc_dk.dk_openmask = 817 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 818 819 wdunlock(wd); 820 return 0; 821 822 bad: 823 if (wd->sc_dk.dk_openmask == 0) { 824 } 825 826 bad3: 827 wdunlock(wd); 828 bad4: 829 if (wd->sc_dk.dk_openmask == 0) 830 wd->atabus->ata_delref(wd->drvp); 831 return error; 832 } 833 834 int 835 wdclose(dev, flag, fmt, p) 836 dev_t dev; 837 int flag, fmt; 838 struct proc *p; 839 { 840 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 841 int part = WDPART(dev); 842 int error; 843 844 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 845 if ((error = wdlock(wd)) != 0) 846 return error; 847 848 switch (fmt) { 849 case S_IFCHR: 850 wd->sc_dk.dk_copenmask &= ~(1 << part); 851 break; 852 case S_IFBLK: 853 wd->sc_dk.dk_bopenmask &= ~(1 << part); 854 break; 855 } 856 wd->sc_dk.dk_openmask = 857 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 858 859 if (wd->sc_dk.dk_openmask == 0) { 860 wd_flushcache(wd, AT_WAIT); 861 /* XXXX Must wait for I/O to complete! */ 862 863 if (! (wd->sc_flags & WDF_KLABEL)) 864 wd->sc_flags &= ~WDF_LOADED; 865 866 wd->atabus->ata_delref(wd->drvp); 867 } 868 869 wdunlock(wd); 870 return 0; 871 } 872 873 void 874 wdgetdefaultlabel(wd, lp) 875 struct wd_softc *wd; 876 struct disklabel *lp; 877 { 878 879 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 880 memset(lp, 0, sizeof(struct disklabel)); 881 882 lp->d_secsize = DEV_BSIZE; 883 lp->d_ntracks = wd->sc_params.atap_heads; 884 lp->d_nsectors = wd->sc_params.atap_sectors; 885 lp->d_ncylinders = wd->sc_params.atap_cylinders; 886 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 887 888 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) 889 lp->d_type = DTYPE_ST506; 890 else 891 lp->d_type = DTYPE_ESDI; 892 893 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 894 strncpy(lp->d_packname, "fictitious", 16); 895 lp->d_secperunit = wd->sc_capacity; 896 lp->d_rpm = 3600; 897 lp->d_interleave = 1; 898 lp->d_flags = 0; 899 900 lp->d_partitions[RAW_PART].p_offset = 0; 901 lp->d_partitions[RAW_PART].p_size = 902 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 903 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 904 lp->d_npartitions = RAW_PART + 1; 905 906 lp->d_magic = DISKMAGIC; 907 lp->d_magic2 = DISKMAGIC; 908 lp->d_checksum = dkcksum(lp); 909 } 910 911 /* 912 * Fabricate a default disk label, and try to read the correct one. 913 */ 914 void 915 wdgetdisklabel(wd) 916 struct wd_softc *wd; 917 { 918 struct disklabel *lp = wd->sc_dk.dk_label; 919 char *errstring; 920 921 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 922 923 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 924 925 wdgetdefaultlabel(wd, lp); 926 927 wd->sc_badsect[0] = -1; 928 929 if (wd->drvp->state > RECAL) 930 wd->drvp->drive_flags |= DRIVE_RESET; 931 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 932 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 933 if (errstring) { 934 /* 935 * This probably happened because the drive's default 936 * geometry doesn't match the DOS geometry. We 937 * assume the DOS geometry is now in the label and try 938 * again. XXX This is a kluge. 939 */ 940 if (wd->drvp->state > RECAL) 941 wd->drvp->drive_flags |= DRIVE_RESET; 942 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 943 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 944 } 945 if (errstring) { 946 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 947 return; 948 } 949 950 if (wd->drvp->state > RECAL) 951 wd->drvp->drive_flags |= DRIVE_RESET; 952 #ifdef HAS_BAD144_HANDLING 953 if ((lp->d_flags & D_BADSECT) != 0) 954 bad144intern(wd); 955 #endif 956 } 957 958 void 959 wdperror(wd) 960 const struct wd_softc *wd; 961 { 962 static const char *const errstr0_3[] = {"address mark not found", 963 "track 0 not found", "aborted command", "media change requested", 964 "id not found", "media changed", "uncorrectable data error", 965 "bad block detected"}; 966 static const char *const errstr4_5[] = { 967 "obsolete (address mark not found)", 968 "no media/write protected", "aborted command", 969 "media change requested", "id not found", "media changed", 970 "uncorrectable data error", "interface CRC error"}; 971 const char *const *errstr; 972 int i; 973 char *sep = ""; 974 975 const char *devname = wd->sc_dev.dv_xname; 976 struct ata_drive_datas *drvp = wd->drvp; 977 int errno = wd->sc_wdc_bio.r_error; 978 979 if (drvp->ata_vers >= 4) 980 errstr = errstr4_5; 981 else 982 errstr = errstr0_3; 983 984 printf("%s: (", devname); 985 986 if (errno == 0) 987 printf("error not notified"); 988 989 for (i = 0; i < 8; i++) { 990 if (errno & (1 << i)) { 991 printf("%s%s", sep, errstr[i]); 992 sep = ", "; 993 } 994 } 995 printf(")\n"); 996 } 997 998 int 999 wdioctl(dev, xfer, addr, flag, p) 1000 dev_t dev; 1001 u_long xfer; 1002 caddr_t addr; 1003 int flag; 1004 struct proc *p; 1005 { 1006 struct wd_softc *wd = device_lookup(&wd_cd, WDUNIT(dev)); 1007 int error; 1008 #ifdef __HAVE_OLD_DISKLABEL 1009 struct disklabel newlabel; 1010 #endif 1011 1012 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 1013 1014 if ((wd->sc_flags & WDF_LOADED) == 0) 1015 return EIO; 1016 1017 switch (xfer) { 1018 #ifdef HAS_BAD144_HANDLING 1019 case DIOCSBAD: 1020 if ((flag & FWRITE) == 0) 1021 return EBADF; 1022 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 1023 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 1024 bad144intern(wd); 1025 return 0; 1026 #endif 1027 1028 case DIOCGDINFO: 1029 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 1030 return 0; 1031 #ifdef __HAVE_OLD_DISKLABEL 1032 case ODIOCGDINFO: 1033 newlabel = *(wd->sc_dk.dk_label); 1034 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1035 return ENOTTY; 1036 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1037 return 0; 1038 #endif 1039 1040 case DIOCGPART: 1041 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 1042 ((struct partinfo *)addr)->part = 1043 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 1044 return 0; 1045 1046 case DIOCWDINFO: 1047 case DIOCSDINFO: 1048 #ifdef __HAVE_OLD_DISKLABEL 1049 case ODIOCWDINFO: 1050 case ODIOCSDINFO: 1051 #endif 1052 { 1053 struct disklabel *lp; 1054 1055 #ifdef __HAVE_OLD_DISKLABEL 1056 if (xfer == ODIOCSDINFO || xfer == ODIOCWDINFO) { 1057 memset(&newlabel, 0, sizeof newlabel); 1058 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1059 lp = &newlabel; 1060 } else 1061 #endif 1062 lp = (struct disklabel *)addr; 1063 1064 if ((flag & FWRITE) == 0) 1065 return EBADF; 1066 1067 if ((error = wdlock(wd)) != 0) 1068 return error; 1069 wd->sc_flags |= WDF_LABELLING; 1070 1071 error = setdisklabel(wd->sc_dk.dk_label, 1072 lp, /*wd->sc_dk.dk_openmask : */0, 1073 wd->sc_dk.dk_cpulabel); 1074 if (error == 0) { 1075 if (wd->drvp->state > RECAL) 1076 wd->drvp->drive_flags |= DRIVE_RESET; 1077 if (xfer == DIOCWDINFO 1078 #ifdef __HAVE_OLD_DISKLABEL 1079 || xfer == ODIOCWDINFO 1080 #endif 1081 ) 1082 error = writedisklabel(WDLABELDEV(dev), 1083 wdstrategy, wd->sc_dk.dk_label, 1084 wd->sc_dk.dk_cpulabel); 1085 } 1086 1087 wd->sc_flags &= ~WDF_LABELLING; 1088 wdunlock(wd); 1089 return error; 1090 } 1091 1092 case DIOCKLABEL: 1093 if (*(int *)addr) 1094 wd->sc_flags |= WDF_KLABEL; 1095 else 1096 wd->sc_flags &= ~WDF_KLABEL; 1097 return 0; 1098 1099 case DIOCWLABEL: 1100 if ((flag & FWRITE) == 0) 1101 return EBADF; 1102 if (*(int *)addr) 1103 wd->sc_flags |= WDF_WLABEL; 1104 else 1105 wd->sc_flags &= ~WDF_WLABEL; 1106 return 0; 1107 1108 case DIOCGDEFLABEL: 1109 wdgetdefaultlabel(wd, (struct disklabel *)addr); 1110 return 0; 1111 #ifdef __HAVE_OLD_DISKLABEL 1112 case ODIOCGDEFLABEL: 1113 wdgetdefaultlabel(wd, &newlabel); 1114 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1115 return ENOTTY; 1116 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1117 return 0; 1118 #endif 1119 1120 #ifdef notyet 1121 case DIOCWFORMAT: 1122 if ((flag & FWRITE) == 0) 1123 return EBADF; 1124 { 1125 register struct format_op *fop; 1126 struct iovec aiov; 1127 struct uio auio; 1128 1129 fop = (struct format_op *)addr; 1130 aiov.iov_base = fop->df_buf; 1131 aiov.iov_len = fop->df_count; 1132 auio.uio_iov = &aiov; 1133 auio.uio_iovcnt = 1; 1134 auio.uio_resid = fop->df_count; 1135 auio.uio_segflg = 0; 1136 auio.uio_offset = 1137 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 1138 auio.uio_procp = p; 1139 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 1140 &auio); 1141 fop->df_count -= auio.uio_resid; 1142 fop->df_reg[0] = wdc->sc_status; 1143 fop->df_reg[1] = wdc->sc_error; 1144 return error; 1145 } 1146 #endif 1147 1148 case ATAIOCCOMMAND: 1149 /* 1150 * Make sure this command is (relatively) safe first 1151 */ 1152 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 1153 (flag & FWRITE) == 0) 1154 return (EBADF); 1155 { 1156 struct wd_ioctl *wi; 1157 atareq_t *atareq = (atareq_t *) addr; 1158 int error; 1159 1160 wi = wi_get(); 1161 wi->wi_softc = wd; 1162 wi->wi_atareq = *atareq; 1163 1164 if (atareq->datalen && atareq->flags & 1165 (ATACMD_READ | ATACMD_WRITE)) { 1166 wi->wi_iov.iov_base = atareq->databuf; 1167 wi->wi_iov.iov_len = atareq->datalen; 1168 wi->wi_uio.uio_iov = &wi->wi_iov; 1169 wi->wi_uio.uio_iovcnt = 1; 1170 wi->wi_uio.uio_resid = atareq->datalen; 1171 wi->wi_uio.uio_offset = 0; 1172 wi->wi_uio.uio_segflg = UIO_USERSPACE; 1173 wi->wi_uio.uio_rw = 1174 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 1175 wi->wi_uio.uio_procp = p; 1176 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 1177 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 1178 minphys, &wi->wi_uio); 1179 } else { 1180 /* No need to call physio if we don't have any 1181 user data */ 1182 wi->wi_bp.b_flags = 0; 1183 wi->wi_bp.b_data = 0; 1184 wi->wi_bp.b_bcount = 0; 1185 wi->wi_bp.b_dev = 0; 1186 wi->wi_bp.b_proc = p; 1187 wdioctlstrategy(&wi->wi_bp); 1188 error = wi->wi_bp.b_error; 1189 } 1190 *atareq = wi->wi_atareq; 1191 wi_free(wi); 1192 return(error); 1193 } 1194 1195 default: 1196 return ENOTTY; 1197 } 1198 1199 #ifdef DIAGNOSTIC 1200 panic("wdioctl: impossible"); 1201 #endif 1202 } 1203 1204 #ifdef B_FORMAT 1205 int 1206 wdformat(struct buf *bp) 1207 { 1208 1209 bp->b_flags |= B_FORMAT; 1210 return wdstrategy(bp); 1211 } 1212 #endif 1213 1214 int 1215 wdsize(dev) 1216 dev_t dev; 1217 { 1218 struct wd_softc *wd; 1219 int part, omask; 1220 int size; 1221 1222 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1223 1224 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1225 if (wd == NULL) 1226 return (-1); 1227 1228 part = WDPART(dev); 1229 omask = wd->sc_dk.dk_openmask & (1 << part); 1230 1231 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1232 return (-1); 1233 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1234 size = -1; 1235 else 1236 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1237 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1238 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1239 return (-1); 1240 return (size); 1241 } 1242 1243 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1244 static int wddoingadump = 0; 1245 static int wddumprecalibrated = 0; 1246 static int wddumpmulti = 1; 1247 1248 /* 1249 * Dump core after a system crash. 1250 */ 1251 int 1252 wddump(dev, blkno, va, size) 1253 dev_t dev; 1254 daddr_t blkno; 1255 caddr_t va; 1256 size_t size; 1257 { 1258 struct wd_softc *wd; /* disk unit to do the I/O */ 1259 struct disklabel *lp; /* disk's disklabel */ 1260 int part, err; 1261 int nblks; /* total number of sectors left to write */ 1262 1263 /* Check if recursive dump; if so, punt. */ 1264 if (wddoingadump) 1265 return EFAULT; 1266 wddoingadump = 1; 1267 1268 wd = device_lookup(&wd_cd, WDUNIT(dev)); 1269 if (wd == NULL) 1270 return (ENXIO); 1271 1272 part = WDPART(dev); 1273 1274 /* Convert to disk sectors. Request must be a multiple of size. */ 1275 lp = wd->sc_dk.dk_label; 1276 if ((size % lp->d_secsize) != 0) 1277 return EFAULT; 1278 nblks = size / lp->d_secsize; 1279 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1280 1281 /* Check transfer bounds against partition size. */ 1282 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1283 return EINVAL; 1284 1285 /* Offset block number to start of partition. */ 1286 blkno += lp->d_partitions[part].p_offset; 1287 1288 /* Recalibrate, if first dump transfer. */ 1289 if (wddumprecalibrated == 0) { 1290 wddumpmulti = wd->sc_multi; 1291 wddumprecalibrated = 1; 1292 wd->drvp->state = RESET; 1293 } 1294 1295 while (nblks > 0) { 1296 again: 1297 wd->sc_bp = NULL; 1298 wd->sc_wdc_bio.blkno = blkno; 1299 wd->sc_wdc_bio.flags = ATA_POLL; 1300 if (wddumpmulti == 1) 1301 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1302 if (wd->sc_flags & WDF_LBA48) 1303 wd->sc_wdc_bio.flags |= ATA_LBA48; 1304 if (wd->sc_flags & WDF_LBA) 1305 wd->sc_wdc_bio.flags |= ATA_LBA; 1306 wd->sc_wdc_bio.bcount = 1307 min(nblks, wddumpmulti) * lp->d_secsize; 1308 wd->sc_wdc_bio.databuf = va; 1309 #ifndef WD_DUMP_NOT_TRUSTED 1310 switch (wd->atabus->ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1311 case WDC_TRY_AGAIN: 1312 panic("wddump: try again"); 1313 break; 1314 case WDC_QUEUED: 1315 panic("wddump: polled command has been queued"); 1316 break; 1317 case WDC_COMPLETE: 1318 break; 1319 } 1320 switch(wd->sc_wdc_bio.error) { 1321 case TIMEOUT: 1322 printf("wddump: device timed out"); 1323 err = EIO; 1324 break; 1325 case ERR_DF: 1326 printf("wddump: drive fault"); 1327 err = EIO; 1328 break; 1329 case ERR_DMA: 1330 printf("wddump: DMA error"); 1331 err = EIO; 1332 break; 1333 case ERROR: 1334 printf("wddump: "); 1335 wdperror(wd); 1336 err = EIO; 1337 break; 1338 case NOERROR: 1339 err = 0; 1340 break; 1341 default: 1342 panic("wddump: unknown error type"); 1343 } 1344 if (err != 0) { 1345 if (wddumpmulti != 1) { 1346 wddumpmulti = 1; /* retry in single-sector */ 1347 printf(", retrying\n"); 1348 goto again; 1349 } 1350 printf("\n"); 1351 return err; 1352 } 1353 #else /* WD_DUMP_NOT_TRUSTED */ 1354 /* Let's just talk about this first... */ 1355 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1356 unit, va, cylin, head, sector); 1357 delay(500 * 1000); /* half a second */ 1358 #endif 1359 1360 /* update block count */ 1361 nblks -= min(nblks, wddumpmulti); 1362 blkno += min(nblks, wddumpmulti); 1363 va += min(nblks, wddumpmulti) * lp->d_secsize; 1364 } 1365 1366 wddoingadump = 0; 1367 return 0; 1368 } 1369 1370 #ifdef HAS_BAD144_HANDLING 1371 /* 1372 * Internalize the bad sector table. 1373 */ 1374 void 1375 bad144intern(wd) 1376 struct wd_softc *wd; 1377 { 1378 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1379 struct disklabel *lp = wd->sc_dk.dk_label; 1380 int i = 0; 1381 1382 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1383 1384 for (; i < NBT_BAD; i++) { 1385 if (bt->bt_bad[i].bt_cyl == 0xffff) 1386 break; 1387 wd->sc_badsect[i] = 1388 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1389 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1390 (bt->bt_bad[i].bt_trksec & 0xff); 1391 } 1392 for (; i < NBT_BAD+1; i++) 1393 wd->sc_badsect[i] = -1; 1394 } 1395 #endif 1396 1397 int 1398 wd_get_params(wd, flags, params) 1399 struct wd_softc *wd; 1400 u_int8_t flags; 1401 struct ataparams *params; 1402 { 1403 switch (wd->atabus->ata_get_params(wd->drvp, flags, params)) { 1404 case CMD_AGAIN: 1405 return 1; 1406 case CMD_ERR: 1407 /* 1408 * We `know' there's a drive here; just assume it's old. 1409 * This geometry is only used to read the MBR and print a 1410 * (false) attach message. 1411 */ 1412 strncpy(params->atap_model, "ST506", 1413 sizeof params->atap_model); 1414 params->atap_config = ATA_CFG_FIXED; 1415 params->atap_cylinders = 1024; 1416 params->atap_heads = 8; 1417 params->atap_sectors = 17; 1418 params->atap_multi = 1; 1419 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1420 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1421 return 0; 1422 case CMD_OK: 1423 return 0; 1424 default: 1425 panic("wd_get_params: bad return code from ata_get_params"); 1426 /* NOTREACHED */ 1427 } 1428 } 1429 1430 void 1431 wd_flushcache(wd, flags) 1432 struct wd_softc *wd; 1433 int flags; 1434 { 1435 struct wdc_command wdc_c; 1436 1437 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1438 return; 1439 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1440 wdc_c.r_command = WDCC_FLUSHCACHE; 1441 wdc_c.r_st_bmask = WDCS_DRDY; 1442 wdc_c.r_st_pmask = WDCS_DRDY; 1443 wdc_c.flags = flags; 1444 wdc_c.timeout = 30000; /* 30s timeout */ 1445 if (wd->atabus->ata_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1446 printf("%s: flush cache command didn't complete\n", 1447 wd->sc_dev.dv_xname); 1448 } 1449 if (wdc_c.flags & AT_TIMEOU) { 1450 printf("%s: flush cache command timeout\n", 1451 wd->sc_dev.dv_xname); 1452 } 1453 if (wdc_c.flags & AT_DF) { 1454 printf("%s: flush cache command: drive fault\n", 1455 wd->sc_dev.dv_xname); 1456 } 1457 /* 1458 * Ignore error register, it shouldn't report anything else 1459 * than COMMAND ABORTED, which means the device doesn't support 1460 * flush cache 1461 */ 1462 } 1463 1464 void 1465 wd_shutdown(arg) 1466 void *arg; 1467 { 1468 struct wd_softc *wd = arg; 1469 wd_flushcache(wd, AT_POLL); 1470 } 1471 1472 /* 1473 * Allocate space for a ioctl queue structure. Mostly taken from 1474 * scsipi_ioctl.c 1475 */ 1476 struct wd_ioctl * 1477 wi_get() 1478 { 1479 struct wd_ioctl *wi; 1480 int s; 1481 1482 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK|M_ZERO); 1483 s = splbio(); 1484 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1485 splx(s); 1486 return (wi); 1487 } 1488 1489 /* 1490 * Free an ioctl structure and remove it from our list 1491 */ 1492 1493 void 1494 wi_free(wi) 1495 struct wd_ioctl *wi; 1496 { 1497 int s; 1498 1499 s = splbio(); 1500 LIST_REMOVE(wi, wi_list); 1501 splx(s); 1502 free(wi, M_TEMP); 1503 } 1504 1505 /* 1506 * Find a wd_ioctl structure based on the struct buf. 1507 */ 1508 1509 struct wd_ioctl * 1510 wi_find(bp) 1511 struct buf *bp; 1512 { 1513 struct wd_ioctl *wi; 1514 int s; 1515 1516 s = splbio(); 1517 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1518 if (bp == &wi->wi_bp) 1519 break; 1520 splx(s); 1521 return (wi); 1522 } 1523 1524 /* 1525 * Ioctl pseudo strategy routine 1526 * 1527 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1528 * happens here is: 1529 * 1530 * - wdioctl() queues a wd_ioctl structure. 1531 * 1532 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1533 * user space I/O is required. If physio() is called, physio() eventually 1534 * calls wdioctlstrategy(). 1535 * 1536 * - In either case, wdioctlstrategy() calls wd->atabus->ata_exec_command() 1537 * to perform the actual command 1538 * 1539 * The reason for the use of the pseudo strategy routine is because 1540 * when doing I/O to/from user space, physio _really_ wants to be in 1541 * the loop. We could put the entire buffer into the ioctl request 1542 * structure, but that won't scale if we want to do things like download 1543 * microcode. 1544 */ 1545 1546 void 1547 wdioctlstrategy(bp) 1548 struct buf *bp; 1549 { 1550 struct wd_ioctl *wi; 1551 struct wdc_command wdc_c; 1552 int error = 0; 1553 1554 wi = wi_find(bp); 1555 if (wi == NULL) { 1556 printf("user_strat: No ioctl\n"); 1557 error = EINVAL; 1558 goto bad; 1559 } 1560 1561 memset(&wdc_c, 0, sizeof(wdc_c)); 1562 1563 /* 1564 * Abort if physio broke up the transfer 1565 */ 1566 1567 if (bp->b_bcount != wi->wi_atareq.datalen) { 1568 printf("physio split wd ioctl request... cannot proceed\n"); 1569 error = EIO; 1570 goto bad; 1571 } 1572 1573 /* 1574 * Abort if we didn't get a buffer size that was a multiple of 1575 * our sector size (or was larger than NBBY) 1576 */ 1577 1578 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1579 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1580 (1 << NBBY)) { 1581 error = EINVAL; 1582 goto bad; 1583 } 1584 1585 /* 1586 * Make sure a timeout was supplied in the ioctl request 1587 */ 1588 1589 if (wi->wi_atareq.timeout == 0) { 1590 error = EINVAL; 1591 goto bad; 1592 } 1593 1594 if (wi->wi_atareq.flags & ATACMD_READ) 1595 wdc_c.flags |= AT_READ; 1596 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1597 wdc_c.flags |= AT_WRITE; 1598 1599 if (wi->wi_atareq.flags & ATACMD_READREG) 1600 wdc_c.flags |= AT_READREG; 1601 1602 wdc_c.flags |= AT_WAIT; 1603 1604 wdc_c.timeout = wi->wi_atareq.timeout; 1605 wdc_c.r_command = wi->wi_atareq.command; 1606 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1607 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1608 wdc_c.r_sector = wi->wi_atareq.sec_num; 1609 wdc_c.r_count = wi->wi_atareq.sec_count; 1610 wdc_c.r_precomp = wi->wi_atareq.features; 1611 wdc_c.r_st_bmask = WDCS_DRDY; 1612 wdc_c.r_st_pmask = WDCS_DRDY; 1613 wdc_c.data = wi->wi_bp.b_data; 1614 wdc_c.bcount = wi->wi_bp.b_bcount; 1615 1616 if (wi->wi_softc->atabus->ata_exec_command(wi->wi_softc->drvp, &wdc_c) 1617 != WDC_COMPLETE) { 1618 wi->wi_atareq.retsts = ATACMD_ERROR; 1619 goto bad; 1620 } 1621 1622 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1623 if (wdc_c.flags & AT_ERROR) { 1624 wi->wi_atareq.retsts = ATACMD_ERROR; 1625 wi->wi_atareq.error = wdc_c.r_error; 1626 } else if (wdc_c.flags & AT_DF) 1627 wi->wi_atareq.retsts = ATACMD_DF; 1628 else 1629 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1630 } else { 1631 wi->wi_atareq.retsts = ATACMD_OK; 1632 if (wi->wi_atareq.flags & ATACMD_READREG) { 1633 wi->wi_atareq.head = wdc_c.r_head ; 1634 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1635 wi->wi_atareq.sec_num = wdc_c.r_sector; 1636 wi->wi_atareq.sec_count = wdc_c.r_count; 1637 wi->wi_atareq.features = wdc_c.r_precomp; 1638 wi->wi_atareq.error = wdc_c.r_error; 1639 } 1640 } 1641 1642 bp->b_error = 0; 1643 biodone(bp); 1644 return; 1645 bad: 1646 bp->b_flags |= B_ERROR; 1647 bp->b_error = error; 1648 biodone(bp); 1649 } 1650
Indexes created Sat Sep 27 22:09:54 GMT 2025