wd.c revision 1.175.2.12
1 /* $NetBSD: wd.c,v 1.175.2.12 1998/09/20 19:00:15 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1998 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 #define WDCDEBUG 69 70 #include "rnd.h" 71 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/kernel.h> 75 #include <sys/conf.h> 76 #include <sys/file.h> 77 #include <sys/stat.h> 78 #include <sys/ioctl.h> 79 #include <sys/buf.h> 80 #include <sys/uio.h> 81 #include <sys/malloc.h> 82 #include <sys/device.h> 83 #include <sys/disklabel.h> 84 #include <sys/disk.h> 85 #include <sys/syslog.h> 86 #include <sys/proc.h> 87 #if NRND > 0 88 #include <sys/rnd.h> 89 #endif 90 91 #include <vm/vm.h> 92 93 #include <machine/intr.h> 94 #include <machine/bus.h> 95 96 #include <dev/ata/atareg.h> 97 #include <dev/ata/atavar.h> 98 #include <dev/ata/wdvar.h> 99 #include <dev/ic/wdcreg.h> 100 #include "locators.h" 101 102 #define WAITTIME (4 * hz) /* time to wait for a completion */ 103 #define WDIORETRIES 5 /* number of retries before giving up */ 104 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 105 106 #define WDUNIT(dev) DISKUNIT(dev) 107 #define WDPART(dev) DISKPART(dev) 108 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 109 110 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 111 112 #define DEBUG_INTR 0x01 113 #define DEBUG_XFERS 0x02 114 #define DEBUG_STATUS 0x04 115 #define DEBUG_FUNCS 0x08 116 #define DEBUG_PROBE 0x10 117 #ifdef WDCDEBUG 118 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 119 #define WDCDEBUG_PRINT(args, level) \ 120 if (wdcdebug_wd_mask & (level)) \ 121 printf args 122 #else 123 #define WDCDEBUG_PRINT(args, level) 124 #endif 125 126 struct wd_softc { 127 /* General disk infos */ 128 struct device sc_dev; 129 struct disk sc_dk; 130 struct buf sc_q; 131 /* IDE disk soft states */ 132 struct ata_bio sc_wdc_bio; /* current transfert */ 133 struct buf *sc_bp; /* buf being transfered */ 134 void *wdc_softc; /* pointer to our parent */ 135 struct ata_drive_datas *drvp; /* Our controller's infos */ 136 int openings; 137 struct ataparams sc_params;/* drive characteistics found */ 138 int sc_flags; 139 #define WDF_LOCKED 0x01 140 #define WDF_WANTED 0x02 141 #define WDF_WLABEL 0x04 /* label is writable */ 142 #define WDF_LABELLING 0x08 /* writing label */ 143 /* 144 * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is 145 * more fully implemented. 146 */ 147 #define WDF_LOADED 0x10 /* parameters loaded */ 148 #define WDF_WAIT 0x20 /* waiting for resources */ 149 #define WDF_LBA 0x40 /* using LBA mode */ 150 int sc_capacity; 151 int cyl; /* actual drive parameters */ 152 int heads; 153 int sectors; 154 int retries; /* number of xfer retry */ 155 #if NRND > 0 156 rndsource_element_t rnd_source; 157 #endif 158 }; 159 160 #define sc_drive sc_wdc_bio.drive 161 #define sc_mode sc_wdc_bio.mode 162 #define sc_multi sc_wdc_bio.multi 163 #define sc_badsect sc_wdc_bio.badsect 164 165 int wdprobe __P((struct device *, struct cfdata *, void *)); 166 void wdattach __P((struct device *, struct device *, void *)); 167 int wdprint __P((void *, char *)); 168 169 struct cfattach wd_ca = { 170 sizeof(struct wd_softc), wdprobe, wdattach 171 }; 172 173 extern struct cfdriver wd_cd; 174 175 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 176 void wdgetdisklabel __P((struct wd_softc *)); 177 void wdstrategy __P((struct buf *)); 178 void wdstart __P((void *)); 179 void __wdstart __P((struct wd_softc*, struct buf *)); 180 void wdrestart __P((void*)); 181 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 182 183 struct dkdriver wddkdriver = { wdstrategy }; 184 185 /* XXX: these should go elsewhere */ 186 cdev_decl(wd); 187 bdev_decl(wd); 188 189 #ifdef HAS_BAD144_HANDLING 190 static void bad144intern __P((struct wd_softc *)); 191 #endif 192 int wdlock __P((struct wd_softc *)); 193 void wdunlock __P((struct wd_softc *)); 194 void print_wderror __P((int, char*)); 195 196 int 197 wdprobe(parent, match, aux) 198 struct device *parent; 199 struct cfdata *match; 200 201 void *aux; 202 { 203 struct ata_atapi_attach *aa_link = aux; 204 205 if (aa_link == NULL) 206 return 0; 207 if (aa_link->aa_type != T_ATA) 208 return 0; 209 210 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 211 match->cf_loc[ATACF_CHANNEL] != aa_link->aa_channel) 212 return 0; 213 214 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 215 match->cf_loc[ATACF_DRIVE] != aa_link->aa_drv_data->drive) 216 return 0; 217 return 1; 218 } 219 220 void 221 wdattach(parent, self, aux) 222 struct device *parent, *self; 223 void *aux; 224 { 225 struct wd_softc *wd = (void *)self; 226 struct ata_atapi_attach *aa_link= aux; 227 int i, blank; 228 char buf[41], c, *p, *q; 229 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 230 231 wd->openings = aa_link->aa_openings; 232 wd->drvp = aa_link->aa_drv_data;; 233 wd->wdc_softc = parent; 234 /* give back our softc to our caller */ 235 wd->drvp->drv_softc = wd; 236 237 /* read our drive info */ 238 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 239 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 240 return; 241 } 242 243 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 244 i < sizeof(wd->sc_params.atap_model); i++) { 245 c = *p++; 246 if (c == '\0') 247 break; 248 if (c != ' ') { 249 if (blank) { 250 *q++ = ' '; 251 blank = 0; 252 } 253 *q++ = c; 254 } else 255 blank = 1; 256 } 257 *q++ = '\0'; 258 259 printf(": <%s>\n", buf); 260 261 if ((wd->sc_params.atap_multi & 0xff) > 1) { 262 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 263 } else { 264 wd->sc_multi = 1; 265 } 266 267 printf("%s: using %d-sector pio transfers,", wd->sc_dev.dv_xname, 268 wd->sc_multi); 269 270 /* Prior to ATA-4, LBA was optional. */ 271 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 272 wd->sc_flags |= WDF_LBA; 273 #if 0 274 /* ATA-4 requires LBA. */ 275 if (wd->sc_params.atap_ataversion != 0xffff && 276 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 277 wd->sc_flags |= WDF_LBA; 278 #endif 279 280 if ((wd->sc_flags & WDF_LBA) != 0) { 281 printf(" lba mode\n"); 282 wd->sc_capacity = 283 (wd->sc_params.atap_capacity[1] << 16) | 284 wd->sc_params.atap_capacity[0]; 285 printf("%s %dMB, %d cyl, %d head, %d sec, %d bytes/sect x %d sectors\n", 286 self->dv_xname, 287 wd->sc_capacity / (1048576 / DEV_BSIZE), 288 wd->sc_params.atap_cylinders, 289 wd->sc_params.atap_heads, 290 wd->sc_params.atap_sectors, 291 DEV_BSIZE, 292 wd->sc_capacity); 293 } else { 294 printf(" chs mode\n"); 295 wd->sc_capacity = 296 wd->sc_params.atap_cylinders * 297 wd->sc_params.atap_heads * 298 wd->sc_params.atap_sectors; 299 printf("%s %dMB, %d cyl, %d head, %d sec, %d bytes/sect x %d " 300 "sectors\n", self->dv_xname, 301 wd->sc_capacity / (1048576 / DEV_BSIZE), 302 wd->sc_params.atap_cylinders, 303 wd->sc_params.atap_heads, 304 wd->sc_params.atap_sectors, 305 DEV_BSIZE, 306 wd->sc_capacity); 307 } 308 WDCDEBUG_PRINT(("atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 309 wd->sc_params.atap_dmatiming_mimi, 310 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 311 /* 312 * Initialize and attach the disk structure. 313 */ 314 wd->sc_dk.dk_driver = &wddkdriver; 315 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 316 disk_attach(&wd->sc_dk); 317 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 318 319 #if NRND > 0 320 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, RND_TYPE_DISK); 321 #endif 322 } 323 324 /* 325 * Read/write routine for a buffer. Validates the arguments and schedules the 326 * transfer. Does not wait for the transfer to complete. 327 */ 328 void 329 wdstrategy(bp) 330 struct buf *bp; 331 { 332 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(bp->b_dev)]; 333 int s; 334 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 335 DEBUG_FUNCS | DEBUG_XFERS); 336 337 /* Valid request? */ 338 if (bp->b_blkno < 0 || 339 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 340 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 341 bp->b_error = EINVAL; 342 goto bad; 343 } 344 345 /* If device invalidated (e.g. media change, door open), error. */ 346 if ((wd->sc_flags & WDF_LOADED) == 0) { 347 bp->b_error = EIO; 348 goto bad; 349 } 350 351 /* If it's a null transfer, return immediately. */ 352 if (bp->b_bcount == 0) 353 goto done; 354 355 /* 356 * Do bounds checking, adjust transfer. if error, process. 357 * If end of partition, just return. 358 */ 359 if (WDPART(bp->b_dev) != RAW_PART && 360 bounds_check_with_label(bp, wd->sc_dk.dk_label, 361 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 362 goto done; 363 /* Queue transfer on drive, activate drive and controller if idle. */ 364 s = splbio(); 365 disksort(&wd->sc_q, bp); 366 wdstart(wd); 367 splx(s); 368 return; 369 bad: 370 bp->b_flags |= B_ERROR; 371 done: 372 /* Toss transfer; we're done early. */ 373 bp->b_resid = bp->b_bcount; 374 biodone(bp); 375 } 376 377 /* 378 * Queue a drive for I/O. 379 */ 380 void 381 wdstart(arg) 382 void *arg; 383 { 384 struct wd_softc *wd = arg; 385 struct buf *dp, *bp=0; 386 387 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 388 DEBUG_FUNCS | DEBUG_XFERS); 389 while (wd->openings > 0) { 390 391 /* Is there a buf for us ? */ 392 dp = &wd->sc_q; 393 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 394 return; 395 dp->b_actf = bp->b_actf; 396 397 /* 398 * Make the command. First lock the device 399 */ 400 wd->openings--; 401 402 wd->retries = 0; 403 __wdstart(wd, bp); 404 } 405 } 406 407 void 408 __wdstart(wd, bp) 409 struct wd_softc *wd; 410 struct buf *bp; 411 { 412 daddr_t p_offset; 413 if (WDPART(bp->b_dev) != RAW_PART) 414 p_offset = 415 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 416 else 417 p_offset = 0; 418 wd->sc_wdc_bio.blkno = bp->b_blkno + p_offset; 419 wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 420 wd->sc_wdc_bio.blkdone =0; 421 wd->sc_bp = bp; 422 /* 423 * If we're retrying, retry in single-sector mode. This will give us 424 * the sector number of the problem, and will eventually allow the 425 * transfert to succeed. 426 */ 427 if (wd->sc_multi == 1 || wd->retries > 0) 428 wd->sc_wdc_bio.flags = ATA_SINGLE; 429 else 430 wd->sc_wdc_bio.flags = 0; 431 if (wd->sc_flags & WDF_LBA) 432 wd->sc_wdc_bio.flags |= ATA_LBA; 433 if (bp->b_flags & B_READ) 434 wd->sc_wdc_bio.flags |= ATA_READ; 435 wd->sc_wdc_bio.bcount = bp->b_bcount; 436 wd->sc_wdc_bio.databuf = bp->b_data; 437 /* Instrumentation. */ 438 disk_busy(&wd->sc_dk); 439 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 440 case WDC_TRY_AGAIN: 441 timeout(wdrestart, wd, hz); 442 break; 443 case WDC_QUEUED: 444 break; 445 case WDC_COMPLETE: 446 wddone(wd); 447 break; 448 default: 449 panic("__wdstart: bad return code from wdc_ata_bio()"); 450 } 451 } 452 453 void 454 wddone(v) 455 void *v; 456 { 457 struct wd_softc *wd = v; 458 struct buf *bp = wd->sc_bp; 459 char buf[256], *errbuf = buf; 460 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 461 DEBUG_FUNCS | DEBUG_XFERS); 462 463 bp->b_resid = wd->sc_wdc_bio.bcount; 464 errbuf[0] = '\0'; 465 switch (wd->sc_wdc_bio.error) { 466 case ERR_DMA: 467 errbuf = "DMA error"; 468 goto retry; 469 case ERR_DF: 470 errbuf = "device fault"; 471 goto retry; 472 case TIMEOUT: 473 errbuf = "device timeout"; 474 goto retry; 475 case ERROR: 476 /* Don't care about media change bits */ 477 if (wd->sc_wdc_bio.r_error != 0 && 478 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 479 goto noerror; 480 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 481 retry: /* Just reset and retry. Can we do more ? */ 482 wdc_reset_channel(wd->drvp); 483 diskerr(bp, "wd", errbuf, LOG_PRINTF, 484 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 485 if (wd->retries++ < WDIORETRIES) { 486 printf(", retrying\n"); 487 timeout(wdrestart, wd, RECOVERYTIME); 488 return; 489 } 490 printf("\n"); 491 bp->b_flags |= B_ERROR; 492 bp->b_error = EIO; 493 break; 494 case NOERROR: 495 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 496 printf("%s: soft error (corrected)\n", 497 wd->sc_dev.dv_xname); 498 } 499 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 500 #if NRND > 0 501 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 502 #endif 503 biodone(bp); 504 wd->openings++; 505 wdstart(wd); 506 } 507 508 void 509 wdrestart(v) 510 void *v; 511 { 512 struct wd_softc *wd = v; 513 struct buf *bp = wd->sc_bp; 514 int s; 515 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 516 DEBUG_FUNCS | DEBUG_XFERS); 517 518 s = splbio(); 519 __wdstart(v, bp); 520 splx(s); 521 } 522 523 int 524 wdread(dev, uio, flags) 525 dev_t dev; 526 struct uio *uio; 527 int flags; 528 { 529 530 WDCDEBUG_PRINT(("wdread\n"), DEBUG_FUNCS | DEBUG_XFERS); 531 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 532 } 533 534 int 535 wdwrite(dev, uio, flags) 536 dev_t dev; 537 struct uio *uio; 538 int flags; 539 { 540 541 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_FUNCS | DEBUG_XFERS); 542 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 543 } 544 545 /* 546 * Wait interruptibly for an exclusive lock. 547 * 548 * XXX 549 * Several drivers do this; it should be abstracted and made MP-safe. 550 */ 551 int 552 wdlock(wd) 553 struct wd_softc *wd; 554 { 555 int error; 556 int s; 557 558 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 559 560 s = splbio(); 561 562 while ((wd->sc_flags & WDF_LOCKED) != 0) { 563 wd->sc_flags |= WDF_WANTED; 564 if ((error = tsleep(wd, PRIBIO | PCATCH, 565 "wdlck", 0)) != 0) { 566 splx(s); 567 return error; 568 } 569 } 570 wd->sc_flags |= WDF_LOCKED; 571 splx(s); 572 return 0; 573 } 574 575 /* 576 * Unlock and wake up any waiters. 577 */ 578 void 579 wdunlock(wd) 580 struct wd_softc *wd; 581 { 582 583 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 584 585 wd->sc_flags &= ~WDF_LOCKED; 586 if ((wd->sc_flags & WDF_WANTED) != 0) { 587 wd->sc_flags &= ~WDF_WANTED; 588 wakeup(wd); 589 } 590 } 591 592 int 593 wdopen(dev, flag, fmt, p) 594 dev_t dev; 595 int flag, fmt; 596 struct proc *p; 597 { 598 struct wd_softc *wd; 599 int unit, part; 600 int error; 601 602 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 603 unit = WDUNIT(dev); 604 if (unit >= wd_cd.cd_ndevs) 605 return ENXIO; 606 wd = wd_cd.cd_devs[unit]; 607 if (wd == NULL) 608 return ENXIO; 609 610 if ((error = wdlock(wd)) != 0) 611 return error; 612 613 if (wd->sc_dk.dk_openmask != 0) { 614 /* 615 * If any partition is open, but the disk has been invalidated, 616 * disallow further opens. 617 */ 618 if ((wd->sc_flags & WDF_LOADED) == 0) { 619 error = EIO; 620 goto bad3; 621 } 622 } else { 623 if ((wd->sc_flags & WDF_LOADED) == 0) { 624 wd->sc_flags |= WDF_LOADED; 625 626 /* Load the physical device parameters. */ 627 wd_get_params(wd, AT_POLL, &wd->sc_params); 628 629 /* Load the partition info if not already loaded. */ 630 wdgetdisklabel(wd); 631 } 632 } 633 634 part = WDPART(dev); 635 636 /* Check that the partition exists. */ 637 if (part != RAW_PART && 638 (part >= wd->sc_dk.dk_label->d_npartitions || 639 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 640 error = ENXIO; 641 goto bad; 642 } 643 644 /* Insure only one open at a time. */ 645 switch (fmt) { 646 case S_IFCHR: 647 wd->sc_dk.dk_copenmask |= (1 << part); 648 break; 649 case S_IFBLK: 650 wd->sc_dk.dk_bopenmask |= (1 << part); 651 break; 652 } 653 wd->sc_dk.dk_openmask = 654 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 655 656 wdunlock(wd); 657 return 0; 658 659 bad: 660 if (wd->sc_dk.dk_openmask == 0) { 661 } 662 663 bad3: 664 wdunlock(wd); 665 return error; 666 } 667 668 int 669 wdclose(dev, flag, fmt, p) 670 dev_t dev; 671 int flag, fmt; 672 struct proc *p; 673 { 674 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 675 int part = WDPART(dev); 676 int error; 677 678 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 679 if ((error = wdlock(wd)) != 0) 680 return error; 681 682 switch (fmt) { 683 case S_IFCHR: 684 wd->sc_dk.dk_copenmask &= ~(1 << part); 685 break; 686 case S_IFBLK: 687 wd->sc_dk.dk_bopenmask &= ~(1 << part); 688 break; 689 } 690 wd->sc_dk.dk_openmask = 691 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 692 693 if (wd->sc_dk.dk_openmask == 0) { 694 /* XXXX Must wait for I/O to complete! */ 695 } 696 697 wdunlock(wd); 698 return 0; 699 } 700 701 void 702 wdgetdefaultlabel(wd, lp) 703 struct wd_softc *wd; 704 struct disklabel *lp; 705 { 706 707 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 708 memset(lp, 0, sizeof(struct disklabel)); 709 710 lp->d_secsize = DEV_BSIZE; 711 lp->d_ntracks = wd->sc_params.atap_heads; 712 lp->d_nsectors = wd->sc_params.atap_sectors; 713 lp->d_ncylinders = wd->sc_params.atap_cylinders; 714 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 715 716 #if 0 717 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) { 718 lp->d_type = DTYPE_ST506; 719 strncpy(lp->d_typename, "ST506 disk", 16); 720 } else { 721 lp->d_type = DTYPE_ESDI; 722 strncpy(lp->d_typename, "ESDI/IDE", 723 sizeof lp->d_typename); 724 } 725 #endif 726 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 727 strncpy(lp->d_packname, "fictitious", 16); 728 lp->d_secperunit = wd->sc_capacity; 729 lp->d_rpm = 3600; 730 lp->d_interleave = 1; 731 lp->d_flags = 0; 732 733 lp->d_partitions[RAW_PART].p_offset = 0; 734 lp->d_partitions[RAW_PART].p_size = 735 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 736 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 737 lp->d_npartitions = RAW_PART + 1; 738 739 lp->d_magic = DISKMAGIC; 740 lp->d_magic2 = DISKMAGIC; 741 lp->d_checksum = dkcksum(lp); 742 } 743 744 /* 745 * Fabricate a default disk label, and try to read the correct one. 746 */ 747 void 748 wdgetdisklabel(wd) 749 struct wd_softc *wd; 750 { 751 struct disklabel *lp = wd->sc_dk.dk_label; 752 char *errstring; 753 754 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 755 756 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 757 758 wdgetdefaultlabel(wd, lp); 759 760 wd->sc_badsect[0] = -1; 761 762 if (wd->drvp->state > RECAL) 763 wd->drvp->state = RECAL; 764 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 765 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 766 if (errstring) { 767 /* 768 * This probably happened because the drive's default 769 * geometry doesn't match the DOS geometry. We 770 * assume the DOS geometry is now in the label and try 771 * again. XXX This is a kluge. 772 */ 773 if (wd->drvp->state > RECAL) 774 wd->drvp->state = RECAL; 775 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 776 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 777 } 778 if (errstring) { 779 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 780 return; 781 } 782 783 if (wd->drvp->state > RECAL) 784 wd->drvp->state = RECAL; 785 #ifdef HAS_BAD144_HANDLING 786 if ((lp->d_flags & D_BADSECT) != 0) 787 bad144intern(wd); 788 #endif 789 } 790 791 int 792 wdioctl(dev, xfer, addr, flag, p) 793 dev_t dev; 794 u_long xfer; 795 caddr_t addr; 796 int flag; 797 struct proc *p; 798 { 799 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 800 int error; 801 802 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 803 804 if ((wd->sc_flags & WDF_LOADED) == 0) 805 return EIO; 806 807 switch (xfer) { 808 #ifdef HAS_BAD144_HANDLING 809 case DIOCSBAD: 810 if ((flag & FWRITE) == 0) 811 return EBADF; 812 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 813 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 814 bad144intern(wd); 815 return 0; 816 #endif 817 818 case DIOCGDINFO: 819 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 820 return 0; 821 822 case DIOCGPART: 823 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 824 ((struct partinfo *)addr)->part = 825 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 826 return 0; 827 828 case DIOCWDINFO: 829 case DIOCSDINFO: 830 if ((flag & FWRITE) == 0) 831 return EBADF; 832 833 if ((error = wdlock(wd)) != 0) 834 return error; 835 wd->sc_flags |= WDF_LABELLING; 836 837 error = setdisklabel(wd->sc_dk.dk_label, 838 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 839 wd->sc_dk.dk_cpulabel); 840 if (error == 0) { 841 if (wd->drvp->state > RECAL) 842 wd->drvp->state = RECAL; 843 if (xfer == DIOCWDINFO) 844 error = writedisklabel(WDLABELDEV(dev), 845 wdstrategy, wd->sc_dk.dk_label, 846 wd->sc_dk.dk_cpulabel); 847 } 848 849 wd->sc_flags &= ~WDF_LABELLING; 850 wdunlock(wd); 851 return error; 852 853 case DIOCWLABEL: 854 if ((flag & FWRITE) == 0) 855 return EBADF; 856 if (*(int *)addr) 857 wd->sc_flags |= WDF_WLABEL; 858 else 859 wd->sc_flags &= ~WDF_WLABEL; 860 return 0; 861 862 case DIOCGDEFLABEL: 863 wdgetdefaultlabel(wd, (struct disklabel *)addr); 864 return 0; 865 866 #ifdef notyet 867 case DIOCWFORMAT: 868 if ((flag & FWRITE) == 0) 869 return EBADF; 870 { 871 register struct format_op *fop; 872 struct iovec aiov; 873 struct uio auio; 874 875 fop = (struct format_op *)addr; 876 aiov.iov_base = fop->df_buf; 877 aiov.iov_len = fop->df_count; 878 auio.uio_iov = &aiov; 879 auio.uio_iovcnt = 1; 880 auio.uio_resid = fop->df_count; 881 auio.uio_segflg = 0; 882 auio.uio_offset = 883 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 884 auio.uio_procp = p; 885 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 886 &auio); 887 fop->df_count -= auio.uio_resid; 888 fop->df_reg[0] = wdc->sc_status; 889 fop->df_reg[1] = wdc->sc_error; 890 return error; 891 } 892 #endif 893 894 default: 895 return ENOTTY; 896 } 897 898 #ifdef DIAGNOSTIC 899 panic("wdioctl: impossible"); 900 #endif 901 } 902 903 #ifdef B_FORMAT 904 int 905 wdformat(struct buf *bp) 906 { 907 908 bp->b_flags |= B_FORMAT; 909 return wdstrategy(bp); 910 } 911 #endif 912 913 int 914 wdsize(dev) 915 dev_t dev; 916 { 917 struct wd_softc *wd; 918 int part, unit, omask; 919 int size; 920 921 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 922 923 unit = WDUNIT(dev); 924 if (unit >= wd_cd.cd_ndevs) 925 return (-1); 926 wd = wd_cd.cd_devs[unit]; 927 if (wd == NULL) 928 return (-1); 929 930 part = WDPART(dev); 931 omask = wd->sc_dk.dk_openmask & (1 << part); 932 933 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 934 return (-1); 935 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 936 size = -1; 937 else 938 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 939 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 940 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 941 return (-1); 942 return (size); 943 } 944 945 #ifndef __BDEVSW_DUMP_OLD_TYPE 946 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 947 static int wddoingadump = 0; 948 static int wddumprecalibrated = 0; 949 static int wddumpmulti = 1; 950 951 /* 952 * Dump core after a system crash. 953 */ 954 int 955 wddump(dev, blkno, va, size) 956 dev_t dev; 957 daddr_t blkno; 958 caddr_t va; 959 size_t size; 960 { 961 struct wd_softc *wd; /* disk unit to do the I/O */ 962 struct disklabel *lp; /* disk's disklabel */ 963 int unit, part; 964 int nblks; /* total number of sectors left to write */ 965 int err; 966 char errbuf[256]; 967 968 /* Check if recursive dump; if so, punt. */ 969 if (wddoingadump) 970 return EFAULT; 971 wddoingadump = 1; 972 973 unit = WDUNIT(dev); 974 if (unit >= wd_cd.cd_ndevs) 975 return ENXIO; 976 wd = wd_cd.cd_devs[unit]; 977 if (wd == (struct wd_softc *)0) 978 return ENXIO; 979 980 part = WDPART(dev); 981 982 /* Make sure it was initialized. */ 983 if (wd->drvp->state < READY) 984 return ENXIO; 985 986 /* Convert to disk sectors. Request must be a multiple of size. */ 987 lp = wd->sc_dk.dk_label; 988 if ((size % lp->d_secsize) != 0) 989 return EFAULT; 990 nblks = size / lp->d_secsize; 991 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 992 993 /* Check transfer bounds against partition size. */ 994 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 995 return EINVAL; 996 997 /* Offset block number to start of partition. */ 998 blkno += lp->d_partitions[part].p_offset; 999 1000 /* Recalibrate, if first dump transfer. */ 1001 if (wddumprecalibrated == 0) { 1002 wddumpmulti = wd->sc_multi; 1003 wddumprecalibrated = 1; 1004 wd->drvp->state = RECAL; 1005 } 1006 1007 while (nblks > 0) { 1008 again: 1009 wd->sc_wdc_bio.blkno = blkno; 1010 wd->sc_wdc_bio.flags = ATA_POLL; 1011 if (wddumpmulti == 1) 1012 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1013 if (wd->sc_flags & WDF_LBA) 1014 wd->sc_wdc_bio.flags |= ATA_LBA; 1015 wd->sc_wdc_bio.bcount = 1016 min(nblks, wddumpmulti) * lp->d_secsize; 1017 wd->sc_wdc_bio.databuf = va; 1018 #ifndef WD_DUMP_NOT_TRUSTED 1019 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1020 case WDC_TRY_AGAIN: 1021 panic("wddump: try again"); 1022 break; 1023 case WDC_QUEUED: 1024 panic("wddump: polled command has been queued"); 1025 break; 1026 case WDC_COMPLETE: 1027 break; 1028 } 1029 switch(wd->sc_wdc_bio.error) { 1030 case TIMEOUT: 1031 printf("wddump: device timed out"); 1032 err = EIO; 1033 break; 1034 case ERR_DF: 1035 printf("wddump: drive fault"); 1036 err = EIO; 1037 break; 1038 case ERR_DMA: 1039 printf("wddump: DMA error"); 1040 err = EIO; 1041 break; 1042 case ERROR: 1043 errbuf[0] = '\0'; 1044 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 1045 printf("wddump: %s", errbuf); 1046 err = EIO; 1047 break; 1048 case NOERROR: 1049 err = 0; 1050 break; 1051 default: 1052 panic("wddump: unknown error type"); 1053 } 1054 if (err != 0) { 1055 if (wddumpmulti != 1) { 1056 wddumpmulti = 1; /* retry in single-sector */ 1057 printf(", retrying\n"); 1058 goto again; 1059 } 1060 printf("\n"); 1061 return err; 1062 } 1063 #else /* WD_DUMP_NOT_TRUSTED */ 1064 /* Let's just talk about this first... */ 1065 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1066 unit, va, cylin, head, sector); 1067 delay(500 * 1000); /* half a second */ 1068 #endif 1069 1070 /* update block count */ 1071 nblks -= min(nblks, wddumpmulti); 1072 blkno += min(nblks, wddumpmulti); 1073 va += min(nblks, wddumpmulti) * lp->d_secsize; 1074 } 1075 1076 wddoingadump = 0; 1077 return 0; 1078 } 1079 #else /* __BDEVSW_DUMP_NEW_TYPE */ 1080 1081 1082 int 1083 wddump(dev, blkno, va, size) 1084 dev_t dev; 1085 daddr_t blkno; 1086 caddr_t va; 1087 size_t size; 1088 { 1089 1090 /* Not implemented. */ 1091 return ENXIO; 1092 } 1093 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 1094 1095 #ifdef HAS_BAD144_HANDLING 1096 /* 1097 * Internalize the bad sector table. 1098 */ 1099 void 1100 bad144intern(wd) 1101 struct wd_softc *wd; 1102 { 1103 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1104 struct disklabel *lp = wd->sc_dk.dk_label; 1105 int i = 0; 1106 1107 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_FUNCS | DEBUG_XFERS); 1108 1109 for (; i < NBT_BAD; i++) { 1110 if (bt->bt_bad[i].bt_cyl == 0xffff) 1111 break; 1112 wd->sc_badsect[i] = 1113 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1114 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1115 (bt->bt_bad[i].bt_trksec & 0xff); 1116 } 1117 for (; i < NBT_BAD+1; i++) 1118 wd->sc_badsect[i] = -1; 1119 } 1120 #endif 1121 1122 void 1123 print_wderror(errno, buf) 1124 int errno; 1125 char *buf; 1126 { 1127 static char *errstr[] = {"address mark not found", "track 0 not found", 1128 "aborted command", "media change requested", "id not found", 1129 "media changed", "uncorrectable data error", "bad block detected"}; 1130 int i; 1131 char *sep = ""; 1132 1133 if (errno == 0) { 1134 sprintf(buf, "error not notified"); 1135 } 1136 1137 for (i = 0; i < 8; i++) { 1138 if (errno & (1 << i)) { 1139 buf += sprintf(buf, "%s %s", sep, errstr[i]); 1140 sep = ","; 1141 } 1142 } 1143 } 1144 1145 int 1146 wd_get_params(wd, flags, params) 1147 struct wd_softc *wd; 1148 u_int8_t flags; 1149 struct ataparams *params; 1150 { 1151 switch (ata_get_params(wd->drvp, flags, params)) { 1152 case CMD_AGAIN: 1153 return 1; 1154 case CMD_ERR: 1155 /* 1156 * We `know' there's a drive here; just assume it's old. 1157 * This geometry is only used to read the MBR and print a 1158 * (false) attach message. 1159 */ 1160 strncpy(params->atap_model, "ST506", 1161 sizeof params->atap_model); 1162 params->atap_config = ATA_CFG_FIXED; 1163 params->atap_cylinders = 1024; 1164 params->atap_heads = 8; 1165 params->atap_sectors = 17; 1166 params->atap_multi = 1; 1167 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1168 return 0; 1169 case CMD_OK: 1170 return 0; 1171 default: 1172 panic("wd_get_params: bad return code from ata_get_params"); 1173 /* NOTREACHED */ 1174 } 1175 } 1176
Indexes created Sun Oct 19 02:09:48 GMT 2025