wd.c revision 1.175.2.8
1 /* $NetBSD: wd.c,v 1.175.2.8 1998/08/21 16:34:46 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; 217 218 return 1; 219 } 220 221 void 222 wdattach(parent, self, aux) 223 struct device *parent, *self; 224 void *aux; 225 { 226 struct wd_softc *wd = (void *)self; 227 struct ata_atapi_attach *aa_link= aux; 228 int i, blank; 229 char buf[41], c, *p, *q; 230 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 231 232 wd->openings = aa_link->aa_openings; 233 wd->drvp = aa_link->aa_drv_data;; 234 wd->wdc_softc = parent; 235 /* give back our softc to our caller */ 236 wd->drvp->drv_softc = wd; 237 238 /* read our drive info */ 239 wd_get_params(wd, AT_POLL, &wd->sc_params); 240 241 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 242 i < sizeof(wd->sc_params.atap_model); i++) { 243 c = *p++; 244 if (c == '\0') 245 break; 246 if (c != ' ') { 247 if (blank) { 248 *q++ = ' '; 249 blank = 0; 250 } 251 *q++ = c; 252 } else 253 blank = 1; 254 } 255 *q++ = '\0'; 256 257 printf(": <%s>\n", buf); 258 259 if ((wd->sc_params.atap_multi & 0xff) > 1) { 260 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 261 } else { 262 wd->sc_multi = 1; 263 } 264 265 printf("%s: using %d-sector pio transfers,", wd->sc_dev.dv_xname, 266 wd->sc_multi); 267 268 /* Prior to ATA-4, LBA was optional. */ 269 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 270 wd->sc_flags |= WDF_LBA; 271 #if 0 272 /* ATA-4 requires LBA. */ 273 if (wd->sc_params.atap_ataversion != 0xffff && 274 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 275 wd->sc_flags |= WDF_LBA; 276 #endif 277 278 if ((wd->sc_flags & WDF_LBA) != 0) { 279 printf(" lba mode\n"); 280 wd->sc_capacity = 281 (wd->sc_params.atap_capacity[1] << 16) | 282 wd->sc_params.atap_capacity[0]; 283 printf("%s %dMB, %d cyl, %d head, %d sec, %d bytes/sect x %d sectors\n", 284 self->dv_xname, 285 wd->sc_capacity / (1048576 / DEV_BSIZE), 286 wd->sc_params.atap_cylinders, 287 wd->sc_params.atap_heads, 288 wd->sc_params.atap_sectors, 289 DEV_BSIZE, 290 wd->sc_capacity); 291 } else { 292 printf(" chs mode\n"); 293 wd->sc_capacity = 294 wd->sc_params.atap_cylinders * 295 wd->sc_params.atap_heads * 296 wd->sc_params.atap_sectors; 297 printf("%s %dMB, %d cyl, %d head, %d sec, %d bytes/sect x %d " 298 "sectors\n", self->dv_xname, 299 wd->sc_capacity / (1048576 / DEV_BSIZE), 300 wd->sc_params.atap_cylinders, 301 wd->sc_params.atap_heads, 302 wd->sc_params.atap_sectors, 303 DEV_BSIZE, 304 wd->sc_capacity); 305 } 306 WDCDEBUG_PRINT(("atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 307 wd->sc_params.atap_dmatiming_mimi, 308 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 309 /* 310 * Initialize and attach the disk structure. 311 */ 312 wd->sc_dk.dk_driver = &wddkdriver; 313 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 314 disk_attach(&wd->sc_dk); 315 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 316 317 #if NRND > 0 318 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, RND_TYPE_DISK); 319 #endif 320 } 321 322 /* 323 * Read/write routine for a buffer. Validates the arguments and schedules the 324 * transfer. Does not wait for the transfer to complete. 325 */ 326 void 327 wdstrategy(bp) 328 struct buf *bp; 329 { 330 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(bp->b_dev)]; 331 int s; 332 WDCDEBUG_PRINT(("wdstrategy\n"), DEBUG_FUNCS | DEBUG_XFERS); 333 334 /* Valid request? */ 335 if (bp->b_blkno < 0 || 336 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 337 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 338 bp->b_error = EINVAL; 339 goto bad; 340 } 341 342 /* If device invalidated (e.g. media change, door open), error. */ 343 if ((wd->sc_flags & WDF_LOADED) == 0) { 344 bp->b_error = EIO; 345 goto bad; 346 } 347 348 /* If it's a null transfer, return immediately. */ 349 if (bp->b_bcount == 0) 350 goto done; 351 352 /* 353 * Do bounds checking, adjust transfer. if error, process. 354 * If end of partition, just return. 355 */ 356 if (WDPART(bp->b_dev) != RAW_PART && 357 bounds_check_with_label(bp, wd->sc_dk.dk_label, 358 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 359 goto done; 360 /* Queue transfer on drive, activate drive and controller if idle. */ 361 s = splbio(); 362 disksort(&wd->sc_q, bp); 363 wdstart(wd); 364 splx(s); 365 return; 366 bad: 367 bp->b_flags |= B_ERROR; 368 done: 369 /* Toss transfer; we're done early. */ 370 bp->b_resid = bp->b_bcount; 371 biodone(bp); 372 } 373 374 /* 375 * Queue a drive for I/O. 376 */ 377 void 378 wdstart(arg) 379 void *arg; 380 { 381 struct wd_softc *wd = arg; 382 struct buf *dp, *bp=0; 383 384 WDCDEBUG_PRINT(("wdstart\n"), DEBUG_FUNCS | DEBUG_XFERS); 385 while (wd->openings > 0) { 386 387 /* Is there a buf for us ? */ 388 dp = &wd->sc_q; 389 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 390 return; 391 dp->b_actf = bp->b_actf; 392 393 /* 394 * Make the command. First lock the device 395 */ 396 wd->openings--; 397 398 wd->retries = 0; 399 __wdstart(wd, bp); 400 } 401 } 402 403 void 404 __wdstart(wd, bp) 405 struct wd_softc *wd; 406 struct buf *bp; 407 { 408 daddr_t p_offset; 409 if (WDPART(bp->b_dev) != RAW_PART) 410 p_offset = 411 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 412 else 413 p_offset = 0; 414 wd->sc_wdc_bio.blkno = bp->b_blkno + p_offset; 415 wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 416 wd->sc_wdc_bio.blkdone =0; 417 wd->sc_bp = bp; 418 /* 419 * If we're retrying, retry in single-sector mode. This will give us 420 * the sector number of the problem, and will eventually allow the 421 * transfert to succeed. 422 */ 423 if (wd->sc_multi == 1 || wd->retries > 0) 424 wd->sc_wdc_bio.flags = ATA_SINGLE; 425 else 426 wd->sc_wdc_bio.flags = 0; 427 if (wd->sc_flags & WDF_LBA) 428 wd->sc_wdc_bio.flags |= ATA_LBA; 429 if (bp->b_flags & B_READ) 430 wd->sc_wdc_bio.flags |= ATA_READ; 431 wd->sc_wdc_bio.bcount = bp->b_bcount; 432 wd->sc_wdc_bio.databuf = bp->b_data; 433 /* Instrumentation. */ 434 disk_busy(&wd->sc_dk); 435 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 436 case WDC_TRY_AGAIN: 437 timeout(wdrestart, wd, hz); 438 break; 439 case WDC_QUEUED: 440 break; 441 case WDC_COMPLETE: 442 wddone(wd); 443 break; 444 default: 445 panic("__wdstart: bad return code from wdc_ata_bio()"); 446 } 447 } 448 449 void 450 wddone(v) 451 void *v; 452 { 453 struct wd_softc *wd = v; 454 struct buf *bp = wd->sc_bp; 455 char buf[256], *errbuf = buf; 456 WDCDEBUG_PRINT(("wddone\n"), DEBUG_FUNCS | DEBUG_XFERS); 457 458 bp->b_resid = wd->sc_wdc_bio.bcount; 459 errbuf[0] = '\0'; 460 switch (wd->sc_wdc_bio.error) { 461 case ERR_DMA: 462 errbuf = "DMA error"; 463 goto retry; 464 case ERR_DF: 465 errbuf = "device fault"; 466 goto retry; 467 case TIMEOUT: 468 errbuf = "device timeout"; 469 goto retry; 470 case ERROR: 471 /* Don't care about media change bits */ 472 if (wd->sc_wdc_bio.r_error != 0 && 473 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 474 goto noerror; 475 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 476 retry: /* Just reset and retry. Can we do more ? */ 477 wdc_reset_channel(wd->drvp); 478 diskerr(bp, "wd", errbuf, LOG_PRINTF, 479 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 480 if (wd->retries++ < WDIORETRIES) { 481 printf(", retrying\n"); 482 timeout(wdrestart, wd, RECOVERYTIME); 483 return; 484 } 485 printf("\n"); 486 bp->b_flags |= B_ERROR; 487 bp->b_error = EIO; 488 break; 489 case NOERROR: 490 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 491 printf("%s: soft error (corrected)\n", 492 wd->sc_dev.dv_xname); 493 } 494 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 495 #if NRND > 0 496 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 497 #endif 498 biodone(bp); 499 wd->openings++; 500 wdstart(wd); 501 } 502 503 void 504 wdrestart(v) 505 void *v; 506 { 507 struct wd_softc *wd = v; 508 struct buf *bp = wd->sc_bp; 509 int s; 510 WDCDEBUG_PRINT(("wdrestart\n"), DEBUG_FUNCS | DEBUG_XFERS); 511 512 s = splbio(); 513 __wdstart(v, bp); 514 splx(s); 515 } 516 517 int 518 wdread(dev, uio, flags) 519 dev_t dev; 520 struct uio *uio; 521 int flags; 522 { 523 524 WDCDEBUG_PRINT(("wdread\n"), DEBUG_FUNCS | DEBUG_XFERS); 525 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 526 } 527 528 int 529 wdwrite(dev, uio, flags) 530 dev_t dev; 531 struct uio *uio; 532 int flags; 533 { 534 535 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_FUNCS | DEBUG_XFERS); 536 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 537 } 538 539 /* 540 * Wait interruptibly for an exclusive lock. 541 * 542 * XXX 543 * Several drivers do this; it should be abstracted and made MP-safe. 544 */ 545 int 546 wdlock(wd) 547 struct wd_softc *wd; 548 { 549 int error; 550 int s; 551 552 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 553 554 s = splbio(); 555 556 while ((wd->sc_flags & WDF_LOCKED) != 0) { 557 wd->sc_flags |= WDF_WANTED; 558 if ((error = tsleep(wd, PRIBIO | PCATCH, 559 "wdlck", 0)) != 0) { 560 splx(s); 561 return error; 562 } 563 } 564 wd->sc_flags |= WDF_LOCKED; 565 splx(s); 566 return 0; 567 } 568 569 /* 570 * Unlock and wake up any waiters. 571 */ 572 void 573 wdunlock(wd) 574 struct wd_softc *wd; 575 { 576 577 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 578 579 wd->sc_flags &= ~WDF_LOCKED; 580 if ((wd->sc_flags & WDF_WANTED) != 0) { 581 wd->sc_flags &= ~WDF_WANTED; 582 wakeup(wd); 583 } 584 } 585 586 int 587 wdopen(dev, flag, fmt, p) 588 dev_t dev; 589 int flag, fmt; 590 struct proc *p; 591 { 592 struct wd_softc *wd; 593 int unit, part; 594 int error; 595 596 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 597 unit = WDUNIT(dev); 598 if (unit >= wd_cd.cd_ndevs) 599 return ENXIO; 600 wd = wd_cd.cd_devs[unit]; 601 if (wd == NULL) 602 return ENXIO; 603 604 if ((error = wdlock(wd)) != 0) 605 return error; 606 607 if (wd->sc_dk.dk_openmask != 0) { 608 /* 609 * If any partition is open, but the disk has been invalidated, 610 * disallow further opens. 611 */ 612 if ((wd->sc_flags & WDF_LOADED) == 0) { 613 error = EIO; 614 goto bad3; 615 } 616 } else { 617 if ((wd->sc_flags & WDF_LOADED) == 0) { 618 wd->sc_flags |= WDF_LOADED; 619 620 /* Load the physical device parameters. */ 621 wd_get_params(wd, AT_POLL, &wd->sc_params); 622 623 /* Load the partition info if not already loaded. */ 624 wdgetdisklabel(wd); 625 } 626 } 627 628 part = WDPART(dev); 629 630 /* Check that the partition exists. */ 631 if (part != RAW_PART && 632 (part >= wd->sc_dk.dk_label->d_npartitions || 633 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 634 error = ENXIO; 635 goto bad; 636 } 637 638 /* Insure only one open at a time. */ 639 switch (fmt) { 640 case S_IFCHR: 641 wd->sc_dk.dk_copenmask |= (1 << part); 642 break; 643 case S_IFBLK: 644 wd->sc_dk.dk_bopenmask |= (1 << part); 645 break; 646 } 647 wd->sc_dk.dk_openmask = 648 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 649 650 wdunlock(wd); 651 return 0; 652 653 bad: 654 if (wd->sc_dk.dk_openmask == 0) { 655 } 656 657 bad3: 658 wdunlock(wd); 659 return error; 660 } 661 662 int 663 wdclose(dev, flag, fmt, p) 664 dev_t dev; 665 int flag, fmt; 666 struct proc *p; 667 { 668 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 669 int part = WDPART(dev); 670 int error; 671 672 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 673 if ((error = wdlock(wd)) != 0) 674 return error; 675 676 switch (fmt) { 677 case S_IFCHR: 678 wd->sc_dk.dk_copenmask &= ~(1 << part); 679 break; 680 case S_IFBLK: 681 wd->sc_dk.dk_bopenmask &= ~(1 << part); 682 break; 683 } 684 wd->sc_dk.dk_openmask = 685 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 686 687 if (wd->sc_dk.dk_openmask == 0) { 688 /* XXXX Must wait for I/O to complete! */ 689 } 690 691 wdunlock(wd); 692 return 0; 693 } 694 695 void 696 wdgetdefaultlabel(wd, lp) 697 struct wd_softc *wd; 698 struct disklabel *lp; 699 { 700 701 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 702 memset(lp, 0, sizeof(struct disklabel)); 703 704 lp->d_secsize = DEV_BSIZE; 705 lp->d_ntracks = wd->sc_params.atap_heads; 706 lp->d_nsectors = wd->sc_params.atap_sectors; 707 lp->d_ncylinders = wd->sc_params.atap_cylinders; 708 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 709 710 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) { 711 lp->d_type = DTYPE_ST506; 712 strncpy(lp->d_typename, "ST506 disk", 16); 713 } else { 714 lp->d_type = DTYPE_ESDI; 715 strncpy(lp->d_typename, "ESDI/IDE", 716 sizeof lp->d_typename); 717 } 718 strncpy(lp->d_packname, wd->sc_params.atap_model, 16); 719 lp->d_secperunit = wd->sc_capacity; 720 lp->d_rpm = 3600; 721 lp->d_interleave = 1; 722 lp->d_flags = 0; 723 724 lp->d_partitions[RAW_PART].p_offset = 0; 725 lp->d_partitions[RAW_PART].p_size = 726 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 727 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 728 lp->d_npartitions = RAW_PART + 1; 729 730 lp->d_magic = DISKMAGIC; 731 lp->d_magic2 = DISKMAGIC; 732 lp->d_checksum = dkcksum(lp); 733 } 734 735 /* 736 * Fabricate a default disk label, and try to read the correct one. 737 */ 738 void 739 wdgetdisklabel(wd) 740 struct wd_softc *wd; 741 { 742 struct disklabel *lp = wd->sc_dk.dk_label; 743 char *errstring; 744 745 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 746 747 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 748 749 wdgetdefaultlabel(wd, lp); 750 751 wd->sc_badsect[0] = -1; 752 753 if (wd->drvp->state > RECAL) 754 wd->drvp->state = RECAL; 755 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 756 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 757 if (errstring) { 758 /* 759 * This probably happened because the drive's default 760 * geometry doesn't match the DOS geometry. We 761 * assume the DOS geometry is now in the label and try 762 * again. XXX This is a kluge. 763 */ 764 if (wd->drvp->state > RECAL) 765 wd->drvp->state = RECAL; 766 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 767 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 768 } 769 if (errstring) { 770 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 771 return; 772 } 773 774 if (wd->drvp->state > RECAL) 775 wd->drvp->state = RECAL; 776 #ifdef HAS_BAD144_HANDLING 777 if ((lp->d_flags & D_BADSECT) != 0) 778 bad144intern(wd); 779 #endif 780 } 781 782 int 783 wdioctl(dev, xfer, addr, flag, p) 784 dev_t dev; 785 u_long xfer; 786 caddr_t addr; 787 int flag; 788 struct proc *p; 789 { 790 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 791 int error; 792 793 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 794 795 if ((wd->sc_flags & WDF_LOADED) == 0) 796 return EIO; 797 798 switch (xfer) { 799 #ifdef HAS_BAD144_HANDLING 800 case DIOCSBAD: 801 if ((flag & FWRITE) == 0) 802 return EBADF; 803 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 804 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 805 bad144intern(wd); 806 return 0; 807 #endif 808 809 case DIOCGDINFO: 810 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 811 return 0; 812 813 case DIOCGPART: 814 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 815 ((struct partinfo *)addr)->part = 816 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 817 return 0; 818 819 case DIOCWDINFO: 820 case DIOCSDINFO: 821 if ((flag & FWRITE) == 0) 822 return EBADF; 823 824 if ((error = wdlock(wd)) != 0) 825 return error; 826 wd->sc_flags |= WDF_LABELLING; 827 828 error = setdisklabel(wd->sc_dk.dk_label, 829 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 830 wd->sc_dk.dk_cpulabel); 831 if (error == 0) { 832 if (wd->drvp->state > RECAL) 833 wd->drvp->state = RECAL; 834 if (xfer == DIOCWDINFO) 835 error = writedisklabel(WDLABELDEV(dev), 836 wdstrategy, wd->sc_dk.dk_label, 837 wd->sc_dk.dk_cpulabel); 838 } 839 840 wd->sc_flags &= ~WDF_LABELLING; 841 wdunlock(wd); 842 return error; 843 844 case DIOCWLABEL: 845 if ((flag & FWRITE) == 0) 846 return EBADF; 847 if (*(int *)addr) 848 wd->sc_flags |= WDF_WLABEL; 849 else 850 wd->sc_flags &= ~WDF_WLABEL; 851 return 0; 852 853 case DIOCGDEFLABEL: 854 wdgetdefaultlabel(wd, (struct disklabel *)addr); 855 return 0; 856 857 #ifdef notyet 858 case DIOCWFORMAT: 859 if ((flag & FWRITE) == 0) 860 return EBADF; 861 { 862 register struct format_op *fop; 863 struct iovec aiov; 864 struct uio auio; 865 866 fop = (struct format_op *)addr; 867 aiov.iov_base = fop->df_buf; 868 aiov.iov_len = fop->df_count; 869 auio.uio_iov = &aiov; 870 auio.uio_iovcnt = 1; 871 auio.uio_resid = fop->df_count; 872 auio.uio_segflg = 0; 873 auio.uio_offset = 874 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 875 auio.uio_procp = p; 876 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 877 &auio); 878 fop->df_count -= auio.uio_resid; 879 fop->df_reg[0] = wdc->sc_status; 880 fop->df_reg[1] = wdc->sc_error; 881 return error; 882 } 883 #endif 884 885 default: 886 return ENOTTY; 887 } 888 889 #ifdef DIAGNOSTIC 890 panic("wdioctl: impossible"); 891 #endif 892 } 893 894 #ifdef B_FORMAT 895 int 896 wdformat(struct buf *bp) 897 { 898 899 bp->b_flags |= B_FORMAT; 900 return wdstrategy(bp); 901 } 902 #endif 903 904 int 905 wdsize(dev) 906 dev_t dev; 907 { 908 struct wd_softc *wd; 909 int part, unit, omask; 910 int size; 911 912 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 913 914 unit = WDUNIT(dev); 915 if (unit >= wd_cd.cd_ndevs) 916 return (-1); 917 wd = wd_cd.cd_devs[unit]; 918 if (wd == NULL) 919 return (-1); 920 921 part = WDPART(dev); 922 omask = wd->sc_dk.dk_openmask & (1 << part); 923 924 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 925 return (-1); 926 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 927 size = -1; 928 else 929 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 930 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 931 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 932 return (-1); 933 return (size); 934 } 935 936 #ifndef __BDEVSW_DUMP_OLD_TYPE 937 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 938 static int wddoingadump = 0; 939 static int wddumprecalibrated = 0; 940 static int wddumpmulti = 1; 941 942 /* 943 * Dump core after a system crash. 944 */ 945 int 946 wddump(dev, blkno, va, size) 947 dev_t dev; 948 daddr_t blkno; 949 caddr_t va; 950 size_t size; 951 { 952 struct wd_softc *wd; /* disk unit to do the I/O */ 953 struct disklabel *lp; /* disk's disklabel */ 954 int unit, part; 955 int nblks; /* total number of sectors left to write */ 956 int err; 957 char errbuf[256]; 958 959 /* Check if recursive dump; if so, punt. */ 960 if (wddoingadump) 961 return EFAULT; 962 wddoingadump = 1; 963 964 unit = WDUNIT(dev); 965 if (unit >= wd_cd.cd_ndevs) 966 return ENXIO; 967 wd = wd_cd.cd_devs[unit]; 968 if (wd == (struct wd_softc *)0) 969 return ENXIO; 970 971 part = WDPART(dev); 972 973 /* Make sure it was initialized. */ 974 if (wd->drvp->state < READY) 975 return ENXIO; 976 977 /* Convert to disk sectors. Request must be a multiple of size. */ 978 lp = wd->sc_dk.dk_label; 979 if ((size % lp->d_secsize) != 0) 980 return EFAULT; 981 nblks = size / lp->d_secsize; 982 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 983 984 /* Check transfer bounds against partition size. */ 985 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 986 return EINVAL; 987 988 /* Offset block number to start of partition. */ 989 blkno += lp->d_partitions[part].p_offset; 990 991 /* Recalibrate, if first dump transfer. */ 992 if (wddumprecalibrated == 0) { 993 wddumpmulti = wd->sc_multi; 994 wddumprecalibrated = 1; 995 wd->drvp->state = RECAL; 996 } 997 998 while (nblks > 0) { 999 again: 1000 wd->sc_wdc_bio.blkno = blkno; 1001 wd->sc_wdc_bio.flags = ATA_POLL; 1002 if (wddumpmulti == 1) 1003 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1004 if (wd->sc_flags & WDF_LBA) 1005 wd->sc_wdc_bio.flags |= ATA_LBA; 1006 wd->sc_wdc_bio.bcount = 1007 min(nblks, wddumpmulti) * lp->d_secsize; 1008 wd->sc_wdc_bio.databuf = va; 1009 #ifndef WD_DUMP_NOT_TRUSTED 1010 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1011 case WDC_TRY_AGAIN: 1012 panic("wddump: try again"); 1013 break; 1014 case WDC_QUEUED: 1015 panic("wddump: polled command has been queued"); 1016 break; 1017 case WDC_COMPLETE: 1018 break; 1019 } 1020 switch(wd->sc_wdc_bio.error) { 1021 case TIMEOUT: 1022 printf("wddump: device timed out"); 1023 err = EIO; 1024 break; 1025 case ERR_DF: 1026 printf("wddump: drive fault"); 1027 err = EIO; 1028 break; 1029 case ERR_DMA: 1030 printf("wddump: DMA error"); 1031 err = EIO; 1032 break; 1033 case ERROR: 1034 errbuf[0] = '\0'; 1035 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 1036 printf("wddump: %s", errbuf); 1037 err = EIO; 1038 break; 1039 case NOERROR: 1040 err = 0; 1041 break; 1042 default: 1043 panic("wddump: unknown error type"); 1044 } 1045 if (err != 0) { 1046 if (wddumpmulti != 1) { 1047 wddumpmulti = 1; /* retry in single-sector */ 1048 printf(", retrying\n"); 1049 goto again; 1050 } 1051 printf("\n"); 1052 return err; 1053 } 1054 #else /* WD_DUMP_NOT_TRUSTED */ 1055 /* Let's just talk about this first... */ 1056 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1057 unit, va, cylin, head, sector); 1058 delay(500 * 1000); /* half a second */ 1059 #endif 1060 1061 /* update block count */ 1062 nblks -= min(nblks, wddumpmulti); 1063 blkno += min(nblks, wddumpmulti); 1064 va += min(nblks, wddumpmulti) * lp->d_secsize; 1065 } 1066 1067 wddoingadump = 0; 1068 return 0; 1069 } 1070 #else /* __BDEVSW_DUMP_NEW_TYPE */ 1071 1072 1073 int 1074 wddump(dev, blkno, va, size) 1075 dev_t dev; 1076 daddr_t blkno; 1077 caddr_t va; 1078 size_t size; 1079 { 1080 1081 /* Not implemented. */ 1082 return ENXIO; 1083 } 1084 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 1085 1086 #ifdef HAS_BAD144_HANDLING 1087 /* 1088 * Internalize the bad sector table. 1089 */ 1090 void 1091 bad144intern(wd) 1092 struct wd_softc *wd; 1093 { 1094 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1095 struct disklabel *lp = wd->sc_dk.dk_label; 1096 int i = 0; 1097 1098 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_FUNCS | DEBUG_XFERS); 1099 1100 for (; i < NBT_BAD; i++) { 1101 if (bt->bt_bad[i].bt_cyl == 0xffff) 1102 break; 1103 wd->sc_badsect[i] = 1104 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1105 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1106 (bt->bt_bad[i].bt_trksec & 0xff); 1107 } 1108 for (; i < NBT_BAD+1; i++) 1109 wd->sc_badsect[i] = -1; 1110 } 1111 #endif 1112 1113 void 1114 print_wderror(errno, buf) 1115 int errno; 1116 char *buf; 1117 { 1118 static char *errstr[] = {"address mark not found", "track 0 not found", 1119 "aborted command", "media change requested", "id not found", 1120 "media changed", "uncorrectable data error", "bad block detected"}; 1121 int i; 1122 char *sep = ""; 1123 1124 if (errno == 0) { 1125 sprintf(buf, "error not notified"); 1126 } 1127 1128 for (i = 0; i < 8; i++) { 1129 if (errno & (1 << i)) { 1130 buf += sprintf(buf, "%s %s", sep, errstr[i]); 1131 sep = ","; 1132 } 1133 } 1134 } 1135 1136 int 1137 wd_get_params(wd, flags, params) 1138 struct wd_softc *wd; 1139 u_int8_t flags; 1140 struct ataparams *params; 1141 { 1142 switch (ata_get_params(wd->drvp, flags, params)) { 1143 case CMD_AGAIN: 1144 return 1; 1145 case CMD_ERR: 1146 /* 1147 * We `know' there's a drive here; just assume it's old. 1148 * This geometry is only used to read the MBR and print a 1149 * (false) attach message. 1150 */ 1151 strncpy(params->atap_model, "ST506", 1152 sizeof params->atap_model); 1153 params->atap_config = ATA_CFG_FIXED; 1154 params->atap_cylinders = 1024; 1155 params->atap_heads = 8; 1156 params->atap_sectors = 17; 1157 params->atap_multi = 1; 1158 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1159 return 0; 1160 case CMD_OK: 1161 return 0; 1162 default: 1163 panic("wd_get_params: bad return code from ata_get_params"); 1164 /* NOTREACHED */ 1165 } 1166 } 1167
Indexes created Sun Oct 19 16:10:00 GMT 2025