wd.c revision 1.175.2.10
1 /* $NetBSD: wd.c,v 1.175.2.10 1998/09/20 13:16:16 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\n"), DEBUG_FUNCS | DEBUG_XFERS); 335 336 /* Valid request? */ 337 if (bp->b_blkno < 0 || 338 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 339 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 340 bp->b_error = EINVAL; 341 goto bad; 342 } 343 344 /* If device invalidated (e.g. media change, door open), error. */ 345 if ((wd->sc_flags & WDF_LOADED) == 0) { 346 bp->b_error = EIO; 347 goto bad; 348 } 349 350 /* If it's a null transfer, return immediately. */ 351 if (bp->b_bcount == 0) 352 goto done; 353 354 /* 355 * Do bounds checking, adjust transfer. if error, process. 356 * If end of partition, just return. 357 */ 358 if (WDPART(bp->b_dev) != RAW_PART && 359 bounds_check_with_label(bp, wd->sc_dk.dk_label, 360 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 361 goto done; 362 /* Queue transfer on drive, activate drive and controller if idle. */ 363 s = splbio(); 364 disksort(&wd->sc_q, bp); 365 wdstart(wd); 366 splx(s); 367 return; 368 bad: 369 bp->b_flags |= B_ERROR; 370 done: 371 /* Toss transfer; we're done early. */ 372 bp->b_resid = bp->b_bcount; 373 biodone(bp); 374 } 375 376 /* 377 * Queue a drive for I/O. 378 */ 379 void 380 wdstart(arg) 381 void *arg; 382 { 383 struct wd_softc *wd = arg; 384 struct buf *dp, *bp=0; 385 386 WDCDEBUG_PRINT(("wdstart\n"), DEBUG_FUNCS | DEBUG_XFERS); 387 while (wd->openings > 0) { 388 389 /* Is there a buf for us ? */ 390 dp = &wd->sc_q; 391 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 392 return; 393 dp->b_actf = bp->b_actf; 394 395 /* 396 * Make the command. First lock the device 397 */ 398 wd->openings--; 399 400 wd->retries = 0; 401 __wdstart(wd, bp); 402 } 403 } 404 405 void 406 __wdstart(wd, bp) 407 struct wd_softc *wd; 408 struct buf *bp; 409 { 410 daddr_t p_offset; 411 if (WDPART(bp->b_dev) != RAW_PART) 412 p_offset = 413 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 414 else 415 p_offset = 0; 416 wd->sc_wdc_bio.blkno = bp->b_blkno + p_offset; 417 wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 418 wd->sc_wdc_bio.blkdone =0; 419 wd->sc_bp = bp; 420 /* 421 * If we're retrying, retry in single-sector mode. This will give us 422 * the sector number of the problem, and will eventually allow the 423 * transfert to succeed. 424 */ 425 if (wd->sc_multi == 1 || wd->retries > 0) 426 wd->sc_wdc_bio.flags = ATA_SINGLE; 427 else 428 wd->sc_wdc_bio.flags = 0; 429 if (wd->sc_flags & WDF_LBA) 430 wd->sc_wdc_bio.flags |= ATA_LBA; 431 if (bp->b_flags & B_READ) 432 wd->sc_wdc_bio.flags |= ATA_READ; 433 wd->sc_wdc_bio.bcount = bp->b_bcount; 434 wd->sc_wdc_bio.databuf = bp->b_data; 435 /* Instrumentation. */ 436 disk_busy(&wd->sc_dk); 437 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 438 case WDC_TRY_AGAIN: 439 timeout(wdrestart, wd, hz); 440 break; 441 case WDC_QUEUED: 442 break; 443 case WDC_COMPLETE: 444 wddone(wd); 445 break; 446 default: 447 panic("__wdstart: bad return code from wdc_ata_bio()"); 448 } 449 } 450 451 void 452 wddone(v) 453 void *v; 454 { 455 struct wd_softc *wd = v; 456 struct buf *bp = wd->sc_bp; 457 char buf[256], *errbuf = buf; 458 WDCDEBUG_PRINT(("wddone\n"), DEBUG_FUNCS | DEBUG_XFERS); 459 460 bp->b_resid = wd->sc_wdc_bio.bcount; 461 errbuf[0] = '\0'; 462 switch (wd->sc_wdc_bio.error) { 463 case ERR_DMA: 464 errbuf = "DMA error"; 465 goto retry; 466 case ERR_DF: 467 errbuf = "device fault"; 468 goto retry; 469 case TIMEOUT: 470 errbuf = "device timeout"; 471 goto retry; 472 case ERROR: 473 /* Don't care about media change bits */ 474 if (wd->sc_wdc_bio.r_error != 0 && 475 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 476 goto noerror; 477 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 478 retry: /* Just reset and retry. Can we do more ? */ 479 wdc_reset_channel(wd->drvp); 480 diskerr(bp, "wd", errbuf, LOG_PRINTF, 481 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 482 if (wd->retries++ < WDIORETRIES) { 483 printf(", retrying\n"); 484 timeout(wdrestart, wd, RECOVERYTIME); 485 return; 486 } 487 printf("\n"); 488 bp->b_flags |= B_ERROR; 489 bp->b_error = EIO; 490 break; 491 case NOERROR: 492 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 493 printf("%s: soft error (corrected)\n", 494 wd->sc_dev.dv_xname); 495 } 496 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 497 #if NRND > 0 498 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 499 #endif 500 biodone(bp); 501 wd->openings++; 502 wdstart(wd); 503 } 504 505 void 506 wdrestart(v) 507 void *v; 508 { 509 struct wd_softc *wd = v; 510 struct buf *bp = wd->sc_bp; 511 int s; 512 WDCDEBUG_PRINT(("wdrestart\n"), DEBUG_FUNCS | DEBUG_XFERS); 513 514 s = splbio(); 515 __wdstart(v, bp); 516 splx(s); 517 } 518 519 int 520 wdread(dev, uio, flags) 521 dev_t dev; 522 struct uio *uio; 523 int flags; 524 { 525 526 WDCDEBUG_PRINT(("wdread\n"), DEBUG_FUNCS | DEBUG_XFERS); 527 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 528 } 529 530 int 531 wdwrite(dev, uio, flags) 532 dev_t dev; 533 struct uio *uio; 534 int flags; 535 { 536 537 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_FUNCS | DEBUG_XFERS); 538 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 539 } 540 541 /* 542 * Wait interruptibly for an exclusive lock. 543 * 544 * XXX 545 * Several drivers do this; it should be abstracted and made MP-safe. 546 */ 547 int 548 wdlock(wd) 549 struct wd_softc *wd; 550 { 551 int error; 552 int s; 553 554 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 555 556 s = splbio(); 557 558 while ((wd->sc_flags & WDF_LOCKED) != 0) { 559 wd->sc_flags |= WDF_WANTED; 560 if ((error = tsleep(wd, PRIBIO | PCATCH, 561 "wdlck", 0)) != 0) { 562 splx(s); 563 return error; 564 } 565 } 566 wd->sc_flags |= WDF_LOCKED; 567 splx(s); 568 return 0; 569 } 570 571 /* 572 * Unlock and wake up any waiters. 573 */ 574 void 575 wdunlock(wd) 576 struct wd_softc *wd; 577 { 578 579 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 580 581 wd->sc_flags &= ~WDF_LOCKED; 582 if ((wd->sc_flags & WDF_WANTED) != 0) { 583 wd->sc_flags &= ~WDF_WANTED; 584 wakeup(wd); 585 } 586 } 587 588 int 589 wdopen(dev, flag, fmt, p) 590 dev_t dev; 591 int flag, fmt; 592 struct proc *p; 593 { 594 struct wd_softc *wd; 595 int unit, part; 596 int error; 597 598 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 599 unit = WDUNIT(dev); 600 if (unit >= wd_cd.cd_ndevs) 601 return ENXIO; 602 wd = wd_cd.cd_devs[unit]; 603 if (wd == NULL) 604 return ENXIO; 605 606 if ((error = wdlock(wd)) != 0) 607 return error; 608 609 if (wd->sc_dk.dk_openmask != 0) { 610 /* 611 * If any partition is open, but the disk has been invalidated, 612 * disallow further opens. 613 */ 614 if ((wd->sc_flags & WDF_LOADED) == 0) { 615 error = EIO; 616 goto bad3; 617 } 618 } else { 619 if ((wd->sc_flags & WDF_LOADED) == 0) { 620 wd->sc_flags |= WDF_LOADED; 621 622 /* Load the physical device parameters. */ 623 wd_get_params(wd, AT_POLL, &wd->sc_params); 624 625 /* Load the partition info if not already loaded. */ 626 wdgetdisklabel(wd); 627 } 628 } 629 630 part = WDPART(dev); 631 632 /* Check that the partition exists. */ 633 if (part != RAW_PART && 634 (part >= wd->sc_dk.dk_label->d_npartitions || 635 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 636 error = ENXIO; 637 goto bad; 638 } 639 640 /* Insure only one open at a time. */ 641 switch (fmt) { 642 case S_IFCHR: 643 wd->sc_dk.dk_copenmask |= (1 << part); 644 break; 645 case S_IFBLK: 646 wd->sc_dk.dk_bopenmask |= (1 << part); 647 break; 648 } 649 wd->sc_dk.dk_openmask = 650 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 651 652 wdunlock(wd); 653 return 0; 654 655 bad: 656 if (wd->sc_dk.dk_openmask == 0) { 657 } 658 659 bad3: 660 wdunlock(wd); 661 return error; 662 } 663 664 int 665 wdclose(dev, flag, fmt, p) 666 dev_t dev; 667 int flag, fmt; 668 struct proc *p; 669 { 670 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 671 int part = WDPART(dev); 672 int error; 673 674 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 675 if ((error = wdlock(wd)) != 0) 676 return error; 677 678 switch (fmt) { 679 case S_IFCHR: 680 wd->sc_dk.dk_copenmask &= ~(1 << part); 681 break; 682 case S_IFBLK: 683 wd->sc_dk.dk_bopenmask &= ~(1 << part); 684 break; 685 } 686 wd->sc_dk.dk_openmask = 687 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 688 689 if (wd->sc_dk.dk_openmask == 0) { 690 /* XXXX Must wait for I/O to complete! */ 691 } 692 693 wdunlock(wd); 694 return 0; 695 } 696 697 void 698 wdgetdefaultlabel(wd, lp) 699 struct wd_softc *wd; 700 struct disklabel *lp; 701 { 702 703 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 704 memset(lp, 0, sizeof(struct disklabel)); 705 706 lp->d_secsize = DEV_BSIZE; 707 lp->d_ntracks = wd->sc_params.atap_heads; 708 lp->d_nsectors = wd->sc_params.atap_sectors; 709 lp->d_ncylinders = wd->sc_params.atap_cylinders; 710 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 711 712 #if 0 713 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) { 714 lp->d_type = DTYPE_ST506; 715 strncpy(lp->d_typename, "ST506 disk", 16); 716 } else { 717 lp->d_type = DTYPE_ESDI; 718 strncpy(lp->d_typename, "ESDI/IDE", 719 sizeof lp->d_typename); 720 } 721 #endif 722 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 723 strncpy(lp->d_packname, "fictitious", 16); 724 lp->d_secperunit = wd->sc_capacity; 725 lp->d_rpm = 3600; 726 lp->d_interleave = 1; 727 lp->d_flags = 0; 728 729 lp->d_partitions[RAW_PART].p_offset = 0; 730 lp->d_partitions[RAW_PART].p_size = 731 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 732 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 733 lp->d_npartitions = RAW_PART + 1; 734 735 lp->d_magic = DISKMAGIC; 736 lp->d_magic2 = DISKMAGIC; 737 lp->d_checksum = dkcksum(lp); 738 } 739 740 /* 741 * Fabricate a default disk label, and try to read the correct one. 742 */ 743 void 744 wdgetdisklabel(wd) 745 struct wd_softc *wd; 746 { 747 struct disklabel *lp = wd->sc_dk.dk_label; 748 char *errstring; 749 750 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 751 752 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 753 754 wdgetdefaultlabel(wd, lp); 755 756 wd->sc_badsect[0] = -1; 757 758 if (wd->drvp->state > RECAL) 759 wd->drvp->state = RECAL; 760 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 761 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 762 if (errstring) { 763 /* 764 * This probably happened because the drive's default 765 * geometry doesn't match the DOS geometry. We 766 * assume the DOS geometry is now in the label and try 767 * again. XXX This is a kluge. 768 */ 769 if (wd->drvp->state > RECAL) 770 wd->drvp->state = RECAL; 771 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 772 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 773 } 774 if (errstring) { 775 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 776 return; 777 } 778 779 if (wd->drvp->state > RECAL) 780 wd->drvp->state = RECAL; 781 #ifdef HAS_BAD144_HANDLING 782 if ((lp->d_flags & D_BADSECT) != 0) 783 bad144intern(wd); 784 #endif 785 } 786 787 int 788 wdioctl(dev, xfer, addr, flag, p) 789 dev_t dev; 790 u_long xfer; 791 caddr_t addr; 792 int flag; 793 struct proc *p; 794 { 795 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 796 int error; 797 798 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 799 800 if ((wd->sc_flags & WDF_LOADED) == 0) 801 return EIO; 802 803 switch (xfer) { 804 #ifdef HAS_BAD144_HANDLING 805 case DIOCSBAD: 806 if ((flag & FWRITE) == 0) 807 return EBADF; 808 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 809 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 810 bad144intern(wd); 811 return 0; 812 #endif 813 814 case DIOCGDINFO: 815 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 816 return 0; 817 818 case DIOCGPART: 819 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 820 ((struct partinfo *)addr)->part = 821 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 822 return 0; 823 824 case DIOCWDINFO: 825 case DIOCSDINFO: 826 if ((flag & FWRITE) == 0) 827 return EBADF; 828 829 if ((error = wdlock(wd)) != 0) 830 return error; 831 wd->sc_flags |= WDF_LABELLING; 832 833 error = setdisklabel(wd->sc_dk.dk_label, 834 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 835 wd->sc_dk.dk_cpulabel); 836 if (error == 0) { 837 if (wd->drvp->state > RECAL) 838 wd->drvp->state = RECAL; 839 if (xfer == DIOCWDINFO) 840 error = writedisklabel(WDLABELDEV(dev), 841 wdstrategy, wd->sc_dk.dk_label, 842 wd->sc_dk.dk_cpulabel); 843 } 844 845 wd->sc_flags &= ~WDF_LABELLING; 846 wdunlock(wd); 847 return error; 848 849 case DIOCWLABEL: 850 if ((flag & FWRITE) == 0) 851 return EBADF; 852 if (*(int *)addr) 853 wd->sc_flags |= WDF_WLABEL; 854 else 855 wd->sc_flags &= ~WDF_WLABEL; 856 return 0; 857 858 case DIOCGDEFLABEL: 859 wdgetdefaultlabel(wd, (struct disklabel *)addr); 860 return 0; 861 862 #ifdef notyet 863 case DIOCWFORMAT: 864 if ((flag & FWRITE) == 0) 865 return EBADF; 866 { 867 register struct format_op *fop; 868 struct iovec aiov; 869 struct uio auio; 870 871 fop = (struct format_op *)addr; 872 aiov.iov_base = fop->df_buf; 873 aiov.iov_len = fop->df_count; 874 auio.uio_iov = &aiov; 875 auio.uio_iovcnt = 1; 876 auio.uio_resid = fop->df_count; 877 auio.uio_segflg = 0; 878 auio.uio_offset = 879 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 880 auio.uio_procp = p; 881 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 882 &auio); 883 fop->df_count -= auio.uio_resid; 884 fop->df_reg[0] = wdc->sc_status; 885 fop->df_reg[1] = wdc->sc_error; 886 return error; 887 } 888 #endif 889 890 default: 891 return ENOTTY; 892 } 893 894 #ifdef DIAGNOSTIC 895 panic("wdioctl: impossible"); 896 #endif 897 } 898 899 #ifdef B_FORMAT 900 int 901 wdformat(struct buf *bp) 902 { 903 904 bp->b_flags |= B_FORMAT; 905 return wdstrategy(bp); 906 } 907 #endif 908 909 int 910 wdsize(dev) 911 dev_t dev; 912 { 913 struct wd_softc *wd; 914 int part, unit, omask; 915 int size; 916 917 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 918 919 unit = WDUNIT(dev); 920 if (unit >= wd_cd.cd_ndevs) 921 return (-1); 922 wd = wd_cd.cd_devs[unit]; 923 if (wd == NULL) 924 return (-1); 925 926 part = WDPART(dev); 927 omask = wd->sc_dk.dk_openmask & (1 << part); 928 929 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 930 return (-1); 931 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 932 size = -1; 933 else 934 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 935 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 936 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 937 return (-1); 938 return (size); 939 } 940 941 #ifndef __BDEVSW_DUMP_OLD_TYPE 942 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 943 static int wddoingadump = 0; 944 static int wddumprecalibrated = 0; 945 static int wddumpmulti = 1; 946 947 /* 948 * Dump core after a system crash. 949 */ 950 int 951 wddump(dev, blkno, va, size) 952 dev_t dev; 953 daddr_t blkno; 954 caddr_t va; 955 size_t size; 956 { 957 struct wd_softc *wd; /* disk unit to do the I/O */ 958 struct disklabel *lp; /* disk's disklabel */ 959 int unit, part; 960 int nblks; /* total number of sectors left to write */ 961 int err; 962 char errbuf[256]; 963 964 /* Check if recursive dump; if so, punt. */ 965 if (wddoingadump) 966 return EFAULT; 967 wddoingadump = 1; 968 969 unit = WDUNIT(dev); 970 if (unit >= wd_cd.cd_ndevs) 971 return ENXIO; 972 wd = wd_cd.cd_devs[unit]; 973 if (wd == (struct wd_softc *)0) 974 return ENXIO; 975 976 part = WDPART(dev); 977 978 /* Make sure it was initialized. */ 979 if (wd->drvp->state < READY) 980 return ENXIO; 981 982 /* Convert to disk sectors. Request must be a multiple of size. */ 983 lp = wd->sc_dk.dk_label; 984 if ((size % lp->d_secsize) != 0) 985 return EFAULT; 986 nblks = size / lp->d_secsize; 987 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 988 989 /* Check transfer bounds against partition size. */ 990 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 991 return EINVAL; 992 993 /* Offset block number to start of partition. */ 994 blkno += lp->d_partitions[part].p_offset; 995 996 /* Recalibrate, if first dump transfer. */ 997 if (wddumprecalibrated == 0) { 998 wddumpmulti = wd->sc_multi; 999 wddumprecalibrated = 1; 1000 wd->drvp->state = RECAL; 1001 } 1002 1003 while (nblks > 0) { 1004 again: 1005 wd->sc_wdc_bio.blkno = blkno; 1006 wd->sc_wdc_bio.flags = ATA_POLL; 1007 if (wddumpmulti == 1) 1008 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1009 if (wd->sc_flags & WDF_LBA) 1010 wd->sc_wdc_bio.flags |= ATA_LBA; 1011 wd->sc_wdc_bio.bcount = 1012 min(nblks, wddumpmulti) * lp->d_secsize; 1013 wd->sc_wdc_bio.databuf = va; 1014 #ifndef WD_DUMP_NOT_TRUSTED 1015 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1016 case WDC_TRY_AGAIN: 1017 panic("wddump: try again"); 1018 break; 1019 case WDC_QUEUED: 1020 panic("wddump: polled command has been queued"); 1021 break; 1022 case WDC_COMPLETE: 1023 break; 1024 } 1025 switch(wd->sc_wdc_bio.error) { 1026 case TIMEOUT: 1027 printf("wddump: device timed out"); 1028 err = EIO; 1029 break; 1030 case ERR_DF: 1031 printf("wddump: drive fault"); 1032 err = EIO; 1033 break; 1034 case ERR_DMA: 1035 printf("wddump: DMA error"); 1036 err = EIO; 1037 break; 1038 case ERROR: 1039 errbuf[0] = '\0'; 1040 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 1041 printf("wddump: %s", errbuf); 1042 err = EIO; 1043 break; 1044 case NOERROR: 1045 err = 0; 1046 break; 1047 default: 1048 panic("wddump: unknown error type"); 1049 } 1050 if (err != 0) { 1051 if (wddumpmulti != 1) { 1052 wddumpmulti = 1; /* retry in single-sector */ 1053 printf(", retrying\n"); 1054 goto again; 1055 } 1056 printf("\n"); 1057 return err; 1058 } 1059 #else /* WD_DUMP_NOT_TRUSTED */ 1060 /* Let's just talk about this first... */ 1061 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1062 unit, va, cylin, head, sector); 1063 delay(500 * 1000); /* half a second */ 1064 #endif 1065 1066 /* update block count */ 1067 nblks -= min(nblks, wddumpmulti); 1068 blkno += min(nblks, wddumpmulti); 1069 va += min(nblks, wddumpmulti) * lp->d_secsize; 1070 } 1071 1072 wddoingadump = 0; 1073 return 0; 1074 } 1075 #else /* __BDEVSW_DUMP_NEW_TYPE */ 1076 1077 1078 int 1079 wddump(dev, blkno, va, size) 1080 dev_t dev; 1081 daddr_t blkno; 1082 caddr_t va; 1083 size_t size; 1084 { 1085 1086 /* Not implemented. */ 1087 return ENXIO; 1088 } 1089 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 1090 1091 #ifdef HAS_BAD144_HANDLING 1092 /* 1093 * Internalize the bad sector table. 1094 */ 1095 void 1096 bad144intern(wd) 1097 struct wd_softc *wd; 1098 { 1099 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1100 struct disklabel *lp = wd->sc_dk.dk_label; 1101 int i = 0; 1102 1103 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_FUNCS | DEBUG_XFERS); 1104 1105 for (; i < NBT_BAD; i++) { 1106 if (bt->bt_bad[i].bt_cyl == 0xffff) 1107 break; 1108 wd->sc_badsect[i] = 1109 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1110 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1111 (bt->bt_bad[i].bt_trksec & 0xff); 1112 } 1113 for (; i < NBT_BAD+1; i++) 1114 wd->sc_badsect[i] = -1; 1115 } 1116 #endif 1117 1118 void 1119 print_wderror(errno, buf) 1120 int errno; 1121 char *buf; 1122 { 1123 static char *errstr[] = {"address mark not found", "track 0 not found", 1124 "aborted command", "media change requested", "id not found", 1125 "media changed", "uncorrectable data error", "bad block detected"}; 1126 int i; 1127 char *sep = ""; 1128 1129 if (errno == 0) { 1130 sprintf(buf, "error not notified"); 1131 } 1132 1133 for (i = 0; i < 8; i++) { 1134 if (errno & (1 << i)) { 1135 buf += sprintf(buf, "%s %s", sep, errstr[i]); 1136 sep = ","; 1137 } 1138 } 1139 } 1140 1141 int 1142 wd_get_params(wd, flags, params) 1143 struct wd_softc *wd; 1144 u_int8_t flags; 1145 struct ataparams *params; 1146 { 1147 switch (ata_get_params(wd->drvp, flags, params)) { 1148 case CMD_AGAIN: 1149 return 1; 1150 case CMD_ERR: 1151 if ((wd->drvp->drive_flags & DRIVE_OLD) == 0) 1152 return 1; 1153 /* 1154 * We `know' there's a drive here; just assume it's old. 1155 * This geometry is only used to read the MBR and print a 1156 * (false) attach message. 1157 */ 1158 strncpy(params->atap_model, "ST506", 1159 sizeof params->atap_model); 1160 params->atap_config = ATA_CFG_FIXED; 1161 params->atap_cylinders = 1024; 1162 params->atap_heads = 8; 1163 params->atap_sectors = 17; 1164 params->atap_multi = 1; 1165 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1166 return 0; 1167 case CMD_OK: 1168 return 0; 1169 default: 1170 panic("wd_get_params: bad return code from ata_get_params"); 1171 /* NOTREACHED */ 1172 } 1173 } 1174
Indexes created Wed Oct 22 13:09:56 GMT 2025