wd.c revision 1.168
1 /* $NetBSD: wd.c,v 1.168 1998/01/14 23:41:59 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved. 5 * 6 * DMA and multi-sector PIO handling are derived from code contributed by 7 * Onno van der Linden. 8 * 9 * Bus_space-ified by Christopher G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Charles M. Hannum. 22 * 4. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #include "rnd.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/conf.h> 43 #include <sys/file.h> 44 #include <sys/stat.h> 45 #include <sys/ioctl.h> 46 #include <sys/buf.h> 47 #include <sys/uio.h> 48 #include <sys/malloc.h> 49 #include <sys/device.h> 50 #include <sys/disklabel.h> 51 #include <sys/disk.h> 52 #include <sys/syslog.h> 53 #include <sys/proc.h> 54 #if NRND > 0 55 #include <sys/rnd.h> 56 #endif 57 58 #include <vm/vm.h> 59 60 #include <machine/intr.h> 61 #include <machine/bus.h> 62 63 #include <dev/ic/wdcreg.h> /* XXX */ 64 #include <dev/ic/wdcvar.h> /* XXX */ 65 #include <dev/ata/wdlink.h> 66 #include "locators.h" 67 68 #define WAITTIME (4 * hz) /* time to wait for a completion */ 69 70 #define WDIORETRIES 5 /* number of retries before giving up */ 71 72 #define WDUNIT(dev) DISKUNIT(dev) 73 #define WDPART(dev) DISKPART(dev) 74 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 75 76 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 77 78 #ifdef WDDEBUG 79 #define WDDEBUG_PRINT(args) printf args 80 #else 81 #define WDDEBUG_PRINT(args) 82 #endif 83 84 struct wd_softc { 85 struct device sc_dev; 86 struct disk sc_dk; 87 struct wd_link *d_link; 88 struct buf sc_q; 89 #if NRND > 0 90 rndsource_element_t rnd_source; 91 #endif 92 }; 93 94 #ifdef __BROKEN_INDIRECT_CONFIG 95 int wdprobe __P((struct device *, void *, void *)); 96 #else 97 int wdprobe __P((struct device *, struct cfdata *, void *)); 98 #endif 99 void wdattach __P((struct device *, struct device *, void *)); 100 int wdprint __P((void *, char *)); 101 102 struct cfattach wd_ca = { 103 sizeof(struct wd_softc), wdprobe, wdattach 104 }; 105 106 #if (NetBSD > 199801 || NetBSD1_3 >= 3) 107 extern struct cfdriver wd_cd; 108 #else 109 struct cfdriver wd_cd = { 110 NULL, "wd", DV_DISK 111 }; 112 #endif 113 114 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 115 void wdgetdisklabel __P((struct wd_softc *)); 116 int wd_get_parms __P((struct wd_softc *)); 117 void wdstrategy __P((struct buf *)); 118 void wdstart __P((void *)); 119 120 struct dkdriver wddkdriver = { wdstrategy }; 121 122 /* XXX: these should go elsewhere */ 123 cdev_decl(wd); 124 bdev_decl(wd); 125 126 void wdfinish __P((struct wd_softc *, struct buf *)); 127 int wdsetctlr __P((struct wd_link *)); 128 static void bad144intern __P((struct wd_softc *)); 129 int wdlock __P((struct wd_link *)); 130 void wdunlock __P((struct wd_link *)); 131 132 int 133 #ifdef __BROKEN_INDIRECT_CONFIG 134 wdprobe(parent, matchv, aux) 135 #else 136 wdprobe(parent, match, aux) 137 #endif 138 struct device *parent; 139 #ifdef __BROKEN_INDIRECT_CONFIG 140 void *matchv; 141 #else 142 struct cfdata *match; 143 #endif 144 145 void *aux; 146 { 147 #ifdef __BROKEN_INDIRECT_CONFIG 148 struct cfdata *match = matchv; 149 #endif 150 struct wd_link *d_link = aux; 151 int drive; 152 153 if (d_link == NULL) 154 return 0; 155 if (d_link->type != ATA) 156 return 0; 157 158 drive = d_link->drive; 159 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 160 match->cf_loc[ATACF_DRIVE] != drive) 161 return 0; 162 163 return 1; 164 } 165 166 void 167 wdattach(parent, self, aux) 168 struct device *parent, *self; 169 void *aux; 170 { 171 struct wd_softc *wd = (void *)self; 172 struct wd_link *d_link= aux; 173 int i, blank; 174 char buf[41], c, *p, *q; 175 176 wd->d_link = d_link; 177 d_link->openings = 1; 178 d_link->wd_softc = (caddr_t)wd; 179 180 /* 181 * Initialize and attach the disk structure. 182 */ 183 wd->sc_dk.dk_driver = &wddkdriver; 184 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 185 disk_attach(&wd->sc_dk); 186 187 d_link->sc_lp = wd->sc_dk.dk_label; 188 189 wdc_get_parms((struct wdc_softc *)d_link->wdc_softc, d_link); 190 for (blank = 0, p = d_link->sc_params.wdp_model, q = buf, i = 0; 191 i < sizeof(d_link->sc_params.wdp_model); i++) { 192 c = *p++; 193 if (c == '\0') 194 break; 195 if (c != ' ') { 196 if (blank) { 197 *q++ = ' '; 198 blank = 0; 199 } 200 *q++ = c; 201 } else 202 blank = 1; 203 } 204 *q++ = '\0'; 205 206 printf(": <%s>\n%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 207 buf, self->dv_xname, 208 d_link->sc_params.wdp_cylinders * 209 (d_link->sc_params.wdp_heads * d_link->sc_params.wdp_sectors) / 210 (1048576 / DEV_BSIZE), 211 d_link->sc_params.wdp_cylinders, 212 d_link->sc_params.wdp_heads, 213 d_link->sc_params.wdp_sectors, 214 DEV_BSIZE); 215 216 if ((d_link->sc_params.wdp_capabilities & WD_CAP_DMA) != 0 && 217 d_link->sc_mode == WDM_DMA) { 218 d_link->sc_mode = WDM_DMA; 219 } else if (d_link->sc_params.wdp_maxmulti > 1) { 220 d_link->sc_mode = WDM_PIOMULTI; 221 d_link->sc_multiple = min(d_link->sc_params.wdp_maxmulti, 16); 222 } else { 223 d_link->sc_mode = WDM_PIOSINGLE; 224 d_link->sc_multiple = 1; 225 } 226 227 printf("%s: using", wd->sc_dev.dv_xname); 228 if (d_link->sc_mode == WDM_DMA) 229 printf(" dma transfers,"); 230 else 231 printf(" %d-sector %d-bit pio transfers,", 232 d_link->sc_multiple, 233 (((struct wdc_softc *)d_link->wdc_softc)->sc_cap & 234 WDC_CAPABILITY_DATA32) == 0 ? 16 : 32); 235 if ((d_link->sc_params.wdp_capabilities & WD_CAP_LBA) != 0) 236 printf(" lba addressing\n"); 237 else 238 printf(" chs addressing\n"); 239 240 #if NRND > 0 241 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, RND_TYPE_DISK); 242 #endif 243 } 244 245 /* 246 * Read/write routine for a buffer. Validates the arguments and schedules the 247 * transfer. Does not wait for the transfer to complete. 248 */ 249 void 250 wdstrategy(bp) 251 struct buf *bp; 252 { 253 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(bp->b_dev)]; 254 struct wd_link *d_link= wd->d_link; 255 int s; 256 257 /* Valid request? */ 258 if (bp->b_blkno < 0 || 259 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 260 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 261 bp->b_error = EINVAL; 262 goto bad; 263 } 264 265 /* If device invalidated (e.g. media change, door open), error. */ 266 if ((d_link->sc_flags & WDF_LOADED) == 0) { 267 bp->b_error = EIO; 268 goto bad; 269 } 270 271 /* If it's a null transfer, return immediately. */ 272 if (bp->b_bcount == 0) 273 goto done; 274 275 /* 276 * Do bounds checking, adjust transfer. if error, process. 277 * If end of partition, just return. 278 */ 279 if (WDPART(bp->b_dev) != RAW_PART && 280 bounds_check_with_label(bp, wd->sc_dk.dk_label, 281 (d_link->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 282 goto done; 283 284 /* Queue transfer on drive, activate drive and controller if idle. */ 285 s = splbio(); 286 disksort(&wd->sc_q, bp); 287 wdstart(wd); 288 splx(s); 289 return; 290 291 bad: 292 bp->b_flags |= B_ERROR; 293 done: 294 /* Toss transfer; we're done early. */ 295 bp->b_resid = bp->b_bcount; 296 biodone(bp); 297 } 298 299 /* 300 * Queue a drive for I/O. 301 */ 302 void 303 wdstart(arg) 304 void *arg; 305 { 306 struct wd_softc *wd = arg; 307 struct buf *dp, *bp=0; 308 struct wd_link *d_link = wd->d_link; 309 struct wdc_xfer *xfer; 310 u_long p_offset; 311 312 while (d_link->openings > 0) { 313 314 /* Is there a buf for us ? */ 315 dp = &wd->sc_q; 316 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 317 return; 318 dp->b_actf = bp->b_actf; 319 320 /* 321 * Make the command. First lock the device 322 */ 323 d_link->openings--; 324 if (WDPART(bp->b_dev) != RAW_PART) 325 p_offset = 326 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 327 else 328 p_offset = 0; 329 330 xfer = wdc_get_xfer(0); 331 if (xfer == NULL) 332 panic("wdc_xfer"); 333 334 xfer->d_link = d_link; 335 xfer->c_bp = bp; 336 xfer->c_p_offset = p_offset; 337 xfer->databuf = bp->b_data; 338 xfer->c_bcount = bp->b_bcount; 339 xfer->c_flags |= bp->b_flags & (B_READ|B_WRITE); 340 xfer->c_blkno = bp->b_blkno; 341 342 /* Instrumentation. */ 343 disk_busy(&wd->sc_dk); 344 wdc_exec_xfer((struct wdc_softc *)wd->d_link->wdc_softc, 345 wd->d_link, xfer); 346 } 347 } 348 349 int 350 wdread(dev, uio, flags) 351 dev_t dev; 352 struct uio *uio; 353 int flags; 354 { 355 356 WDDEBUG_PRINT(("wdread\n")); 357 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 358 } 359 360 int 361 wdwrite(dev, uio, flags) 362 dev_t dev; 363 struct uio *uio; 364 int flags; 365 { 366 367 WDDEBUG_PRINT(("wdwrite\n")); 368 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 369 } 370 371 /* 372 * Wait interruptibly for an exclusive lock. 373 * 374 * XXX 375 * Several drivers do this; it should be abstracted and made MP-safe. 376 */ 377 int 378 wdlock(d_link) 379 struct wd_link *d_link; 380 { 381 int error; 382 int s; 383 384 WDDEBUG_PRINT(("wdlock\n")); 385 386 s = splbio(); 387 388 while ((d_link->sc_flags & WDF_LOCKED) != 0) { 389 d_link->sc_flags |= WDF_WANTED; 390 if ((error = tsleep(d_link, PRIBIO | PCATCH, 391 "wdlck", 0)) != 0) { 392 splx(s); 393 return error; 394 } 395 } 396 d_link->sc_flags |= WDF_LOCKED; 397 splx(s); 398 return 0; 399 } 400 401 /* 402 * Unlock and wake up any waiters. 403 */ 404 void 405 wdunlock(d_link) 406 struct wd_link *d_link; 407 { 408 409 WDDEBUG_PRINT(("wdunlock")); 410 411 d_link->sc_flags &= ~WDF_LOCKED; 412 if ((d_link->sc_flags & WDF_WANTED) != 0) { 413 d_link->sc_flags &= ~WDF_WANTED; 414 wakeup(d_link); 415 } 416 } 417 418 int 419 wdopen(dev, flag, fmt, p) 420 dev_t dev; 421 int flag, fmt; 422 struct proc *p; 423 { 424 struct wd_softc *wd; 425 struct wd_link *d_link; 426 int unit, part; 427 int error; 428 429 WDDEBUG_PRINT(("wdopen\n")); 430 431 unit = WDUNIT(dev); 432 if (unit >= wd_cd.cd_ndevs) 433 return ENXIO; 434 wd = wd_cd.cd_devs[unit]; 435 if (wd == NULL) 436 return ENXIO; 437 438 d_link = wd->d_link; 439 if ((error = wdlock(d_link)) != 0) 440 return error; 441 442 if (wd->sc_dk.dk_openmask != 0) { 443 /* 444 * If any partition is open, but the disk has been invalidated, 445 * disallow further opens. 446 */ 447 if ((d_link->sc_flags & WDF_LOADED) == 0) { 448 error = EIO; 449 goto bad3; 450 } 451 } else { 452 if ((d_link->sc_flags & WDF_LOADED) == 0) { 453 d_link->sc_flags |= WDF_LOADED; 454 455 /* Load the physical device parameters. */ 456 if (wdc_get_parms((struct wdc_softc *)d_link->wdc_softc, 457 d_link) != 0) { 458 error = ENXIO; 459 goto bad2; 460 } 461 462 /* Load the partition info if not already loaded. */ 463 wdgetdisklabel(wd); 464 } 465 } 466 467 part = WDPART(dev); 468 469 /* Check that the partition exists. */ 470 if (part != RAW_PART && 471 (part >= wd->sc_dk.dk_label->d_npartitions || 472 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 473 error = ENXIO; 474 goto bad; 475 } 476 477 /* Insure only one open at a time. */ 478 switch (fmt) { 479 case S_IFCHR: 480 wd->sc_dk.dk_copenmask |= (1 << part); 481 break; 482 case S_IFBLK: 483 wd->sc_dk.dk_bopenmask |= (1 << part); 484 break; 485 } 486 wd->sc_dk.dk_openmask = wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 487 488 wdunlock(d_link); 489 return 0; 490 491 bad2: 492 d_link->sc_flags &= ~WDF_LOADED; 493 494 bad: 495 if (wd->sc_dk.dk_openmask == 0) { 496 } 497 498 bad3: 499 wdunlock(d_link); 500 return error; 501 } 502 503 int 504 wdclose(dev, flag, fmt, p) 505 dev_t dev; 506 int flag, fmt; 507 struct proc *p; 508 { 509 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 510 int part = WDPART(dev); 511 int error; 512 513 if ((error = wdlock(wd->d_link)) != 0) 514 return error; 515 516 switch (fmt) { 517 case S_IFCHR: 518 wd->sc_dk.dk_copenmask &= ~(1 << part); 519 break; 520 case S_IFBLK: 521 wd->sc_dk.dk_bopenmask &= ~(1 << part); 522 break; 523 } 524 wd->sc_dk.dk_openmask = wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 525 526 if (wd->sc_dk.dk_openmask == 0) { 527 /* XXXX Must wait for I/O to complete! */ 528 } 529 530 wdunlock(wd->d_link); 531 return 0; 532 } 533 534 void 535 wdgetdefaultlabel(wd, lp) 536 struct wd_softc *wd; 537 struct disklabel *lp; 538 { 539 struct wd_link *d_link = wd->d_link; 540 541 bzero(lp, sizeof(struct disklabel)); 542 543 lp->d_secsize = DEV_BSIZE; 544 lp->d_ntracks = d_link->sc_params.wdp_heads; 545 lp->d_nsectors = d_link->sc_params.wdp_sectors; 546 lp->d_ncylinders = d_link->sc_params.wdp_cylinders; 547 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 548 549 #if 0 550 strncpy(lp->d_typename, "ST506 disk", 16); 551 lp->d_type = DTYPE_ST506; 552 #endif 553 strncpy(lp->d_packname, d_link->sc_params.wdp_model, 16); 554 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 555 lp->d_rpm = 3600; 556 lp->d_interleave = 1; 557 lp->d_flags = 0; 558 559 lp->d_partitions[RAW_PART].p_offset = 0; 560 lp->d_partitions[RAW_PART].p_size = 561 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 562 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 563 lp->d_npartitions = RAW_PART + 1; 564 565 lp->d_magic = DISKMAGIC; 566 lp->d_magic2 = DISKMAGIC; 567 lp->d_checksum = dkcksum(lp); 568 } 569 570 /* 571 * Fabricate a default disk label, and try to read the correct one. 572 */ 573 void 574 wdgetdisklabel(wd) 575 struct wd_softc *wd; 576 { 577 struct disklabel *lp = wd->sc_dk.dk_label; 578 struct wd_link *d_link = wd->d_link; 579 char *errstring; 580 581 WDDEBUG_PRINT(("wdgetdisklabel\n")); 582 583 bzero(wd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel)); 584 585 wdgetdefaultlabel(wd, lp); 586 587 d_link->sc_badsect[0] = -1; 588 589 if (d_link->sc_state > RECAL) 590 d_link->sc_state = RECAL; 591 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 592 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 593 if (errstring) { 594 /* 595 * This probably happened because the drive's default 596 * geometry doesn't match the DOS geometry. We 597 * assume the DOS geometry is now in the label and try 598 * again. XXX This is a kluge. 599 */ 600 if (d_link->sc_state > GEOMETRY) 601 d_link->sc_state = GEOMETRY; 602 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 603 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 604 } 605 if (errstring) { 606 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 607 return; 608 } 609 610 if (d_link->sc_state > GEOMETRY) 611 d_link->sc_state = GEOMETRY; 612 if ((lp->d_flags & D_BADSECT) != 0) 613 bad144intern(wd); 614 } 615 616 617 /* 618 * Tell the drive what geometry to use. 619 */ 620 int 621 wdsetctlr(d_link) 622 struct wd_link *d_link; 623 { 624 struct wd_softc *wd=(struct wd_softc *)d_link->wd_softc; 625 626 WDDEBUG_PRINT(("wd(%d,%d) C%dH%dS%d\n", wd->sc_dev.dv_unit, 627 d_link->drive, wd->sc_dk.dk_label->d_ncylinders, 628 wd->sc_dk.dk_label->d_ntracks, wd->sc_dk.dk_label->d_nsectors)); 629 630 if (wdccommand((struct wdc_softc *)d_link->wdc_softc, 631 d_link, WDCC_IDP, d_link->drive, 632 wd->sc_dk.dk_label->d_ncylinders, 633 wd->sc_dk.dk_label->d_ntracks - 1, 0, 634 wd->sc_dk.dk_label->d_nsectors) != 0) { 635 wderror(d_link, NULL, "wdsetctlr: geometry upload failed"); 636 return -1; 637 } 638 639 return 0; 640 } 641 642 int 643 wdioctl(dev, xfer, addr, flag, p) 644 dev_t dev; 645 u_long xfer; 646 caddr_t addr; 647 int flag; 648 struct proc *p; 649 { 650 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 651 struct wd_link *d_link = wd->d_link; 652 int error; 653 654 WDDEBUG_PRINT(("wdioctl\n")); 655 656 if ((d_link->sc_flags & WDF_LOADED) == 0) 657 return EIO; 658 659 switch (xfer) { 660 case DIOCSBAD: 661 if ((flag & FWRITE) == 0) 662 return EBADF; 663 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 664 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 665 bad144intern(wd); 666 return 0; 667 668 case DIOCGDINFO: 669 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 670 return 0; 671 672 case DIOCGPART: 673 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 674 ((struct partinfo *)addr)->part = 675 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 676 return 0; 677 678 case DIOCWDINFO: 679 case DIOCSDINFO: 680 if ((flag & FWRITE) == 0) 681 return EBADF; 682 683 if ((error = wdlock(wd->d_link)) != 0) 684 return error; 685 d_link->sc_flags |= WDF_LABELLING; 686 687 error = setdisklabel(wd->sc_dk.dk_label, 688 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 689 wd->sc_dk.dk_cpulabel); 690 if (error == 0) { 691 if (d_link->sc_state > GEOMETRY) 692 d_link->sc_state = GEOMETRY; 693 if (xfer == DIOCWDINFO) 694 error = writedisklabel(WDLABELDEV(dev), 695 wdstrategy, wd->sc_dk.dk_label, 696 wd->sc_dk.dk_cpulabel); 697 } 698 699 d_link->sc_flags &= ~WDF_LABELLING; 700 wdunlock(d_link); 701 return error; 702 703 case DIOCWLABEL: 704 if ((flag & FWRITE) == 0) 705 return EBADF; 706 if (*(int *)addr) 707 d_link->sc_flags |= WDF_WLABEL; 708 else 709 d_link->sc_flags &= ~WDF_WLABEL; 710 return 0; 711 712 case DIOCGDEFLABEL: 713 wdgetdefaultlabel(wd, (struct disklabel *)addr); 714 return 0; 715 716 #ifdef notyet 717 case DIOCWFORMAT: 718 if ((flag & FWRITE) == 0) 719 return EBADF; 720 { 721 register struct format_op *fop; 722 struct iovec aiov; 723 struct uio auio; 724 725 fop = (struct format_op *)addr; 726 aiov.iov_base = fop->df_buf; 727 aiov.iov_len = fop->df_count; 728 auio.uio_iov = &aiov; 729 auio.uio_iovcnt = 1; 730 auio.uio_resid = fop->df_count; 731 auio.uio_segflg = 0; 732 auio.uio_offset = 733 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 734 auio.uio_procp = p; 735 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 736 &auio); 737 fop->df_count -= auio.uio_resid; 738 fop->df_reg[0] = wdc->sc_status; 739 fop->df_reg[1] = wdc->sc_error; 740 return error; 741 } 742 #endif 743 744 default: 745 return ENOTTY; 746 } 747 748 #ifdef DIAGNOSTIC 749 panic("wdioctl: impossible"); 750 #endif 751 } 752 753 #ifdef B_FORMAT 754 int 755 wdformat(struct buf *bp) 756 { 757 758 bp->b_flags |= B_FORMAT; 759 return wdstrategy(bp); 760 } 761 #endif 762 763 int 764 wdsize(dev) 765 dev_t dev; 766 { 767 struct wd_softc *wd; 768 int part, unit, omask; 769 int size; 770 771 WDDEBUG_PRINT(("wdsize\n")); 772 773 unit = WDUNIT(dev); 774 if (unit >= wd_cd.cd_ndevs) 775 return (-1); 776 wd = wd_cd.cd_devs[unit]; 777 if (wd == NULL) 778 return (-1); 779 780 part = WDPART(dev); 781 omask = wd->sc_dk.dk_openmask & (1 << part); 782 783 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 784 return (-1); 785 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 786 size = -1; 787 else 788 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 789 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 790 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 791 return (-1); 792 return (size); 793 } 794 795 796 #ifndef __BDEVSW_DUMP_OLD_TYPE 797 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 798 static int wddoingadump; 799 static int wddumprecalibrated; 800 801 /* 802 * Dump core after a system crash. 803 * 804 * XXX: This needs work! Currently, it's a major hack: the 805 * use of wdc_softc is very bad and should go away. 806 */ 807 int 808 wddump(dev, blkno, va, size) 809 dev_t dev; 810 daddr_t blkno; 811 caddr_t va; 812 size_t size; 813 { 814 struct wd_softc *wd; /* disk unit to do the I/O */ 815 struct wdc_softc *wdc; /* disk controller to do the I/O */ 816 struct disklabel *lp; /* disk's disklabel */ 817 struct wd_link *d_link; 818 int unit, part; 819 int nblks; /* total number of sectors left to write */ 820 821 /* Check if recursive dump; if so, punt. */ 822 if (wddoingadump) 823 return EFAULT; 824 wddoingadump = 1; 825 826 unit = WDUNIT(dev); 827 if (unit >= wd_cd.cd_ndevs) 828 return ENXIO; 829 wd = wd_cd.cd_devs[unit]; 830 if (wd == (struct wd_softc *)0) 831 return ENXIO; 832 d_link = wd->d_link; 833 834 part = WDPART(dev); 835 836 /* Make sure it was initialized. */ 837 if (d_link->sc_state < READY) 838 return ENXIO; 839 840 wdc = (void *)wd->sc_dev.dv_parent; 841 842 /* Convert to disk sectors. Request must be a multiple of size. */ 843 lp = wd->sc_dk.dk_label; 844 if ((size % lp->d_secsize) != 0) 845 return EFAULT; 846 nblks = size / lp->d_secsize; 847 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 848 849 /* Check transfer bounds against partition size. */ 850 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 851 return EINVAL; 852 853 /* Offset block number to start of partition. */ 854 blkno += lp->d_partitions[part].p_offset; 855 856 /* Recalibrate, if first dump transfer. */ 857 if (wddumprecalibrated == 0) { 858 wddumprecalibrated = 1; 859 if (wdccommandshort(wdc, d_link->drive, WDCC_RECAL) != 0 || 860 wait_for_ready(wdc) != 0 || wdsetctlr(d_link) != 0 || 861 wait_for_ready(wdc) != 0) { 862 wderror(d_link, NULL, "wddump: recal failed"); 863 return EIO; 864 } 865 } 866 867 while (nblks > 0) { 868 daddr_t xlt_blkno = blkno; 869 long cylin, head, sector; 870 871 if ((lp->d_flags & D_BADSECT) != 0) { 872 long blkdiff; 873 int i; 874 875 for (i = 0; (blkdiff = d_link->sc_badsect[i]) != -1; i++) { 876 blkdiff -= xlt_blkno; 877 if (blkdiff < 0) 878 continue; 879 if (blkdiff == 0) { 880 /* Replace current block of transfer. */ 881 xlt_blkno = lp->d_secperunit - 882 lp->d_nsectors - i - 1; 883 } 884 break; 885 } 886 /* Tranfer is okay now. */ 887 } 888 889 if ((d_link->sc_params.wdp_capabilities & WD_CAP_LBA) != 0) { 890 sector = (xlt_blkno >> 0) & 0xff; 891 cylin = (xlt_blkno >> 8) & 0xffff; 892 head = (xlt_blkno >> 24) & 0xf; 893 head |= WDSD_LBA; 894 } else { 895 sector = xlt_blkno % lp->d_nsectors; 896 sector++; /* Sectors begin with 1, not 0. */ 897 xlt_blkno /= lp->d_nsectors; 898 head = xlt_blkno % lp->d_ntracks; 899 xlt_blkno /= lp->d_ntracks; 900 cylin = xlt_blkno; 901 head |= WDSD_CHS; 902 } 903 904 #ifndef WD_DUMP_NOT_TRUSTED 905 if (wdccommand((struct wdc_softc *)d_link->wdc_softc, d_link, 906 WDCC_WRITE, d_link->drive, cylin, head, sector, 1) != 0 || 907 wait_for_drq(wdc) != 0) { 908 wderror(d_link, NULL, "wddump: write failed"); 909 return EIO; 910 } 911 912 /* XXX XXX XXX */ 913 bus_space_write_multi_2(wdc->sc_iot, wdc->sc_ioh, wd_data, 914 (u_int16_t *)va, lp->d_secsize >> 1); 915 916 /* Check data request (should be done). */ 917 if (wait_for_ready(wdc) != 0) { 918 wderror(d_link, NULL, 919 "wddump: timeout waiting for ready"); 920 return EIO; 921 } 922 #else /* WD_DUMP_NOT_TRUSTED */ 923 /* Let's just talk about this first... */ 924 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 925 unit, va, cylin, head, sector); 926 delay(500 * 1000); /* half a second */ 927 #endif 928 929 /* update block count */ 930 nblks -= 1; 931 blkno += 1; 932 va += lp->d_secsize; 933 } 934 935 wddoingadump = 0; 936 return 0; 937 } 938 #else /* __BDEVSW_DUMP_NEW_TYPE */ 939 940 941 int 942 wddump(dev, blkno, va, size) 943 dev_t dev; 944 daddr_t blkno; 945 caddr_t va; 946 size_t size; 947 { 948 949 /* Not implemented. */ 950 return ENXIO; 951 } 952 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 953 954 /* 955 * Internalize the bad sector table. 956 */ 957 void 958 bad144intern(wd) 959 struct wd_softc *wd; 960 { 961 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 962 struct disklabel *lp = wd->sc_dk.dk_label; 963 struct wd_link *d_link = wd->d_link; 964 int i = 0; 965 966 WDDEBUG_PRINT(("bad144intern\n")); 967 968 for (; i < 126; i++) { 969 if (bt->bt_bad[i].bt_cyl == 0xffff) 970 break; 971 d_link->sc_badsect[i] = 972 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 973 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 974 (bt->bt_bad[i].bt_trksec & 0xff); 975 } 976 for (; i < 127; i++) 977 d_link->sc_badsect[i] = -1; 978 } 979 980 void 981 wderror(d_link, bp, msg) 982 struct wd_link *d_link; 983 struct buf *bp; 984 char *msg; 985 { 986 struct wd_softc *wd = (struct wd_softc *)d_link->wd_softc; 987 988 if (bp) { 989 diskerr(bp, "wd", msg, LOG_PRINTF, bp->b_bcount, 990 wd->sc_dk.dk_label); 991 printf("\n"); 992 } else 993 printf("%s: %s\n", wd->sc_dev.dv_xname, msg); 994 } 995 996 void 997 wddone(d_link, bp) 998 struct wd_link *d_link; 999 struct buf *bp; 1000 { 1001 struct wd_softc *wd = (void *)d_link->wd_softc; 1002 1003 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 1004 #if NRND > 0 1005 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 1006 #endif 1007 } 1008
Indexes created Sat Sep 27 22:09:54 GMT 2025