wd.c revision 1.185
1 /* $NetBSD: wd.c,v 1.185 1998/11/19 19:46:12 kenh 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 <sys/wdcio.h> 101 #include "locators.h" 102 103 #define WAITTIME (4 * hz) /* time to wait for a completion */ 104 #define WDIORETRIES 5 /* number of retries before giving up */ 105 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 106 107 #define WDUNIT(dev) DISKUNIT(dev) 108 #define WDPART(dev) DISKPART(dev) 109 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 110 111 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 112 113 #define DEBUG_INTR 0x01 114 #define DEBUG_XFERS 0x02 115 #define DEBUG_STATUS 0x04 116 #define DEBUG_FUNCS 0x08 117 #define DEBUG_PROBE 0x10 118 #ifdef WDCDEBUG 119 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 120 #define WDCDEBUG_PRINT(args, level) \ 121 if (wdcdebug_wd_mask & (level)) \ 122 printf args 123 #else 124 #define WDCDEBUG_PRINT(args, level) 125 #endif 126 127 struct wd_softc { 128 /* General disk infos */ 129 struct device sc_dev; 130 struct disk sc_dk; 131 struct buf sc_q; 132 /* IDE disk soft states */ 133 struct ata_bio sc_wdc_bio; /* current transfer */ 134 struct buf *sc_bp; /* buf being transfered */ 135 void *wdc_softc; /* pointer to our parent */ 136 struct ata_drive_datas *drvp; /* Our controller's infos */ 137 int openings; 138 struct ataparams sc_params;/* drive characteistics found */ 139 int sc_flags; 140 #define WDF_LOCKED 0x01 141 #define WDF_WANTED 0x02 142 #define WDF_WLABEL 0x04 /* label is writable */ 143 #define WDF_LABELLING 0x08 /* writing label */ 144 /* 145 * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is 146 * more fully implemented. 147 */ 148 #define WDF_LOADED 0x10 /* parameters loaded */ 149 #define WDF_WAIT 0x20 /* waiting for resources */ 150 #define WDF_LBA 0x40 /* using LBA mode */ 151 int sc_capacity; 152 int cyl; /* actual drive parameters */ 153 int heads; 154 int sectors; 155 int retries; /* number of xfer retry */ 156 #if NRND > 0 157 rndsource_element_t rnd_source; 158 #endif 159 }; 160 161 #define sc_drive sc_wdc_bio.drive 162 #define sc_mode sc_wdc_bio.mode 163 #define sc_multi sc_wdc_bio.multi 164 #define sc_badsect sc_wdc_bio.badsect 165 166 int wdprobe __P((struct device *, struct cfdata *, void *)); 167 void wdattach __P((struct device *, struct device *, void *)); 168 int wdprint __P((void *, char *)); 169 170 struct cfattach wd_ca = { 171 sizeof(struct wd_softc), wdprobe, wdattach 172 }; 173 174 extern struct cfdriver wd_cd; 175 176 /* 177 * Glue necessary to hook WDCIOCCOMMAND into physio 178 */ 179 180 struct wd_ioctl { 181 LIST_ENTRY(wd_ioctl) wi_list; 182 struct buf wi_bp; 183 struct uio wi_uio; 184 struct iovec wi_iov; 185 wdcreq_t wi_wdcreq; 186 struct wd_softc *wi_softc; 187 }; 188 189 LIST_HEAD(, wd_ioctl) wi_head; 190 191 struct wd_ioctl *wi_find __P((struct buf *)); 192 void wi_free __P((struct wd_ioctl *)); 193 struct wd_ioctl *wi_get __P((void)); 194 void wdioctlstrategy __P((struct buf *)); 195 196 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 197 void wdgetdisklabel __P((struct wd_softc *)); 198 void wdstrategy __P((struct buf *)); 199 void wdstart __P((void *)); 200 void __wdstart __P((struct wd_softc*, struct buf *)); 201 void wdrestart __P((void*)); 202 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 203 204 struct dkdriver wddkdriver = { wdstrategy }; 205 206 /* XXX: these should go elsewhere */ 207 cdev_decl(wd); 208 bdev_decl(wd); 209 210 #ifdef HAS_BAD144_HANDLING 211 static void bad144intern __P((struct wd_softc *)); 212 #endif 213 int wdlock __P((struct wd_softc *)); 214 void wdunlock __P((struct wd_softc *)); 215 void print_wderror __P((int, char*)); 216 217 int 218 wdprobe(parent, match, aux) 219 struct device *parent; 220 struct cfdata *match; 221 222 void *aux; 223 { 224 struct ata_atapi_attach *aa_link = aux; 225 226 if (aa_link == NULL) 227 return 0; 228 if (aa_link->aa_type != T_ATA) 229 return 0; 230 231 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 232 match->cf_loc[ATACF_CHANNEL] != aa_link->aa_channel) 233 return 0; 234 235 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 236 match->cf_loc[ATACF_DRIVE] != aa_link->aa_drv_data->drive) 237 return 0; 238 return 1; 239 } 240 241 void 242 wdattach(parent, self, aux) 243 struct device *parent, *self; 244 void *aux; 245 { 246 struct wd_softc *wd = (void *)self; 247 struct ata_atapi_attach *aa_link= aux; 248 int i, blank; 249 char buf[41], c, *p, *q; 250 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 251 252 wd->openings = aa_link->aa_openings; 253 wd->drvp = aa_link->aa_drv_data;; 254 wd->wdc_softc = parent; 255 /* give back our softc to our caller */ 256 wd->drvp->drv_softc = &wd->sc_dev; 257 258 /* read our drive info */ 259 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 260 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 261 return; 262 } 263 264 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 265 i < sizeof(wd->sc_params.atap_model); i++) { 266 c = *p++; 267 if (c == '\0') 268 break; 269 if (c != ' ') { 270 if (blank) { 271 *q++ = ' '; 272 blank = 0; 273 } 274 *q++ = c; 275 } else 276 blank = 1; 277 } 278 *q++ = '\0'; 279 280 printf(": <%s>\n", buf); 281 282 if ((wd->sc_params.atap_multi & 0xff) > 1) { 283 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 284 } else { 285 wd->sc_multi = 1; 286 } 287 288 printf("%s: drive supports %d-sector pio transfers,", 289 wd->sc_dev.dv_xname, wd->sc_multi); 290 291 /* Prior to ATA-4, LBA was optional. */ 292 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 293 wd->sc_flags |= WDF_LBA; 294 #if 0 295 /* ATA-4 requires LBA. */ 296 if (wd->sc_params.atap_ataversion != 0xffff && 297 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 298 wd->sc_flags |= WDF_LBA; 299 #endif 300 301 if ((wd->sc_flags & WDF_LBA) != 0) { 302 printf(" lba addressing\n"); 303 wd->sc_capacity = 304 (wd->sc_params.atap_capacity[1] << 16) | 305 wd->sc_params.atap_capacity[0]; 306 printf("%s: %dMB, %d cyl, %d head, %d sec, " 307 "%d bytes/sect x %d sectors\n", 308 self->dv_xname, 309 wd->sc_capacity / (1048576 / DEV_BSIZE), 310 wd->sc_params.atap_cylinders, 311 wd->sc_params.atap_heads, 312 wd->sc_params.atap_sectors, 313 DEV_BSIZE, 314 wd->sc_capacity); 315 } else { 316 printf(" chs addressing\n"); 317 wd->sc_capacity = 318 wd->sc_params.atap_cylinders * 319 wd->sc_params.atap_heads * 320 wd->sc_params.atap_sectors; 321 printf("%s %dMB, %d cyl, %d head, %d sec, %d bytes/sect x %d " 322 "sectors\n", self->dv_xname, 323 wd->sc_capacity / (1048576 / DEV_BSIZE), 324 wd->sc_params.atap_cylinders, 325 wd->sc_params.atap_heads, 326 wd->sc_params.atap_sectors, 327 DEV_BSIZE, 328 wd->sc_capacity); 329 } 330 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 331 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 332 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 333 /* 334 * Initialize and attach the disk structure. 335 */ 336 wd->sc_dk.dk_driver = &wddkdriver; 337 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 338 disk_attach(&wd->sc_dk); 339 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 340 341 #if NRND > 0 342 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, RND_TYPE_DISK); 343 #endif 344 } 345 346 /* 347 * Read/write routine for a buffer. Validates the arguments and schedules the 348 * transfer. Does not wait for the transfer to complete. 349 */ 350 void 351 wdstrategy(bp) 352 struct buf *bp; 353 { 354 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(bp->b_dev)]; 355 int s; 356 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 357 DEBUG_XFERS); 358 359 /* Valid request? */ 360 if (bp->b_blkno < 0 || 361 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 362 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 363 bp->b_error = EINVAL; 364 goto bad; 365 } 366 367 /* If device invalidated (e.g. media change, door open), error. */ 368 if ((wd->sc_flags & WDF_LOADED) == 0) { 369 bp->b_error = EIO; 370 goto bad; 371 } 372 373 /* If it's a null transfer, return immediately. */ 374 if (bp->b_bcount == 0) 375 goto done; 376 377 /* 378 * Do bounds checking, adjust transfer. if error, process. 379 * If end of partition, just return. 380 */ 381 if (WDPART(bp->b_dev) != RAW_PART && 382 bounds_check_with_label(bp, wd->sc_dk.dk_label, 383 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 384 goto done; 385 /* Queue transfer on drive, activate drive and controller if idle. */ 386 s = splbio(); 387 disksort(&wd->sc_q, bp); 388 wdstart(wd); 389 splx(s); 390 return; 391 bad: 392 bp->b_flags |= B_ERROR; 393 done: 394 /* Toss transfer; we're done early. */ 395 bp->b_resid = bp->b_bcount; 396 biodone(bp); 397 } 398 399 /* 400 * Queue a drive for I/O. 401 */ 402 void 403 wdstart(arg) 404 void *arg; 405 { 406 struct wd_softc *wd = arg; 407 struct buf *dp, *bp=0; 408 409 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 410 DEBUG_XFERS); 411 while (wd->openings > 0) { 412 413 /* Is there a buf for us ? */ 414 dp = &wd->sc_q; 415 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 416 return; 417 dp->b_actf = bp->b_actf; 418 419 /* 420 * Make the command. First lock the device 421 */ 422 wd->openings--; 423 424 wd->retries = 0; 425 __wdstart(wd, bp); 426 } 427 } 428 429 void 430 __wdstart(wd, bp) 431 struct wd_softc *wd; 432 struct buf *bp; 433 { 434 daddr_t p_offset; 435 if (WDPART(bp->b_dev) != RAW_PART) 436 p_offset = 437 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 438 else 439 p_offset = 0; 440 wd->sc_wdc_bio.blkno = bp->b_blkno + p_offset; 441 wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 442 wd->sc_wdc_bio.blkdone =0; 443 wd->sc_bp = bp; 444 /* 445 * If we're retrying, retry in single-sector mode. This will give us 446 * the sector number of the problem, and will eventually allow the 447 * transfer to succeed. 448 */ 449 if (wd->sc_multi == 1 || wd->retries > 0) 450 wd->sc_wdc_bio.flags = ATA_SINGLE; 451 else 452 wd->sc_wdc_bio.flags = 0; 453 if (wd->sc_flags & WDF_LBA) 454 wd->sc_wdc_bio.flags |= ATA_LBA; 455 if (bp->b_flags & B_READ) 456 wd->sc_wdc_bio.flags |= ATA_READ; 457 wd->sc_wdc_bio.bcount = bp->b_bcount; 458 wd->sc_wdc_bio.databuf = bp->b_data; 459 /* Instrumentation. */ 460 disk_busy(&wd->sc_dk); 461 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 462 case WDC_TRY_AGAIN: 463 timeout(wdrestart, wd, hz); 464 break; 465 case WDC_QUEUED: 466 break; 467 case WDC_COMPLETE: 468 wddone(wd); 469 break; 470 default: 471 panic("__wdstart: bad return code from wdc_ata_bio()"); 472 } 473 } 474 475 void 476 wddone(v) 477 void *v; 478 { 479 struct wd_softc *wd = v; 480 struct buf *bp = wd->sc_bp; 481 char buf[256], *errbuf = buf; 482 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 483 DEBUG_XFERS); 484 485 bp->b_resid = wd->sc_wdc_bio.bcount; 486 errbuf[0] = '\0'; 487 switch (wd->sc_wdc_bio.error) { 488 case ERR_DMA: 489 errbuf = "DMA error"; 490 goto retry; 491 case ERR_DF: 492 errbuf = "device fault"; 493 goto retry; 494 case TIMEOUT: 495 errbuf = "device timeout"; 496 goto retry; 497 case ERROR: 498 /* Don't care about media change bits */ 499 if (wd->sc_wdc_bio.r_error != 0 && 500 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 501 goto noerror; 502 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 503 retry: /* Just reset and retry. Can we do more ? */ 504 wdc_reset_channel(wd->drvp); 505 diskerr(bp, "wd", errbuf, LOG_PRINTF, 506 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 507 if (wd->retries++ < WDIORETRIES) { 508 printf(", retrying\n"); 509 timeout(wdrestart, wd, RECOVERYTIME); 510 return; 511 } 512 printf("\n"); 513 bp->b_flags |= B_ERROR; 514 bp->b_error = EIO; 515 break; 516 case NOERROR: 517 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 518 printf("%s: soft error (corrected)\n", 519 wd->sc_dev.dv_xname); 520 } 521 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 522 #if NRND > 0 523 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 524 #endif 525 biodone(bp); 526 wd->openings++; 527 wdstart(wd); 528 } 529 530 void 531 wdrestart(v) 532 void *v; 533 { 534 struct wd_softc *wd = v; 535 struct buf *bp = wd->sc_bp; 536 int s; 537 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 538 DEBUG_XFERS); 539 540 s = splbio(); 541 __wdstart(v, bp); 542 splx(s); 543 } 544 545 int 546 wdread(dev, uio, flags) 547 dev_t dev; 548 struct uio *uio; 549 int flags; 550 { 551 552 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 553 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 554 } 555 556 int 557 wdwrite(dev, uio, flags) 558 dev_t dev; 559 struct uio *uio; 560 int flags; 561 { 562 563 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 564 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 565 } 566 567 /* 568 * Wait interruptibly for an exclusive lock. 569 * 570 * XXX 571 * Several drivers do this; it should be abstracted and made MP-safe. 572 */ 573 int 574 wdlock(wd) 575 struct wd_softc *wd; 576 { 577 int error; 578 int s; 579 580 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 581 582 s = splbio(); 583 584 while ((wd->sc_flags & WDF_LOCKED) != 0) { 585 wd->sc_flags |= WDF_WANTED; 586 if ((error = tsleep(wd, PRIBIO | PCATCH, 587 "wdlck", 0)) != 0) { 588 splx(s); 589 return error; 590 } 591 } 592 wd->sc_flags |= WDF_LOCKED; 593 splx(s); 594 return 0; 595 } 596 597 /* 598 * Unlock and wake up any waiters. 599 */ 600 void 601 wdunlock(wd) 602 struct wd_softc *wd; 603 { 604 605 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 606 607 wd->sc_flags &= ~WDF_LOCKED; 608 if ((wd->sc_flags & WDF_WANTED) != 0) { 609 wd->sc_flags &= ~WDF_WANTED; 610 wakeup(wd); 611 } 612 } 613 614 int 615 wdopen(dev, flag, fmt, p) 616 dev_t dev; 617 int flag, fmt; 618 struct proc *p; 619 { 620 struct wd_softc *wd; 621 int unit, part; 622 int error; 623 624 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 625 unit = WDUNIT(dev); 626 if (unit >= wd_cd.cd_ndevs) 627 return ENXIO; 628 wd = wd_cd.cd_devs[unit]; 629 if (wd == NULL) 630 return ENXIO; 631 632 if ((error = wdlock(wd)) != 0) 633 return error; 634 635 if (wd->sc_dk.dk_openmask != 0) { 636 /* 637 * If any partition is open, but the disk has been invalidated, 638 * disallow further opens. 639 */ 640 if ((wd->sc_flags & WDF_LOADED) == 0) { 641 error = EIO; 642 goto bad3; 643 } 644 } else { 645 if ((wd->sc_flags & WDF_LOADED) == 0) { 646 wd->sc_flags |= WDF_LOADED; 647 648 /* Load the physical device parameters. */ 649 wd_get_params(wd, AT_WAIT, &wd->sc_params); 650 651 /* Load the partition info if not already loaded. */ 652 wdgetdisklabel(wd); 653 } 654 } 655 656 part = WDPART(dev); 657 658 /* Check that the partition exists. */ 659 if (part != RAW_PART && 660 (part >= wd->sc_dk.dk_label->d_npartitions || 661 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 662 error = ENXIO; 663 goto bad; 664 } 665 666 /* Insure only one open at a time. */ 667 switch (fmt) { 668 case S_IFCHR: 669 wd->sc_dk.dk_copenmask |= (1 << part); 670 break; 671 case S_IFBLK: 672 wd->sc_dk.dk_bopenmask |= (1 << part); 673 break; 674 } 675 wd->sc_dk.dk_openmask = 676 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 677 678 wdunlock(wd); 679 return 0; 680 681 bad: 682 if (wd->sc_dk.dk_openmask == 0) { 683 } 684 685 bad3: 686 wdunlock(wd); 687 return error; 688 } 689 690 int 691 wdclose(dev, flag, fmt, p) 692 dev_t dev; 693 int flag, fmt; 694 struct proc *p; 695 { 696 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 697 int part = WDPART(dev); 698 int error; 699 700 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 701 if ((error = wdlock(wd)) != 0) 702 return error; 703 704 switch (fmt) { 705 case S_IFCHR: 706 wd->sc_dk.dk_copenmask &= ~(1 << part); 707 break; 708 case S_IFBLK: 709 wd->sc_dk.dk_bopenmask &= ~(1 << part); 710 break; 711 } 712 wd->sc_dk.dk_openmask = 713 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 714 715 if (wd->sc_dk.dk_openmask == 0) { 716 /* XXXX Must wait for I/O to complete! */ 717 } 718 719 wdunlock(wd); 720 return 0; 721 } 722 723 void 724 wdgetdefaultlabel(wd, lp) 725 struct wd_softc *wd; 726 struct disklabel *lp; 727 { 728 729 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 730 memset(lp, 0, sizeof(struct disklabel)); 731 732 lp->d_secsize = DEV_BSIZE; 733 lp->d_ntracks = wd->sc_params.atap_heads; 734 lp->d_nsectors = wd->sc_params.atap_sectors; 735 lp->d_ncylinders = wd->sc_params.atap_cylinders; 736 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 737 738 #if 0 739 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) { 740 lp->d_type = DTYPE_ST506; 741 strncpy(lp->d_typename, "ST506 disk", 16); 742 } else { 743 lp->d_type = DTYPE_ESDI; 744 strncpy(lp->d_typename, "ESDI/IDE", 745 sizeof lp->d_typename); 746 } 747 #endif 748 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 749 strncpy(lp->d_packname, "fictitious", 16); 750 lp->d_secperunit = wd->sc_capacity; 751 lp->d_rpm = 3600; 752 lp->d_interleave = 1; 753 lp->d_flags = 0; 754 755 lp->d_partitions[RAW_PART].p_offset = 0; 756 lp->d_partitions[RAW_PART].p_size = 757 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 758 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 759 lp->d_npartitions = RAW_PART + 1; 760 761 lp->d_magic = DISKMAGIC; 762 lp->d_magic2 = DISKMAGIC; 763 lp->d_checksum = dkcksum(lp); 764 } 765 766 /* 767 * Fabricate a default disk label, and try to read the correct one. 768 */ 769 void 770 wdgetdisklabel(wd) 771 struct wd_softc *wd; 772 { 773 struct disklabel *lp = wd->sc_dk.dk_label; 774 char *errstring; 775 776 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 777 778 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 779 780 wdgetdefaultlabel(wd, lp); 781 782 wd->sc_badsect[0] = -1; 783 784 if (wd->drvp->state > RECAL) 785 wd->drvp->drive_flags |= DRIVE_RESET; 786 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 787 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 788 if (errstring) { 789 /* 790 * This probably happened because the drive's default 791 * geometry doesn't match the DOS geometry. We 792 * assume the DOS geometry is now in the label and try 793 * again. XXX This is a kluge. 794 */ 795 if (wd->drvp->state > RECAL) 796 wd->drvp->drive_flags |= DRIVE_RESET; 797 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 798 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 799 } 800 if (errstring) { 801 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 802 return; 803 } 804 805 if (wd->drvp->state > RECAL) 806 wd->drvp->drive_flags |= DRIVE_RESET; 807 #ifdef HAS_BAD144_HANDLING 808 if ((lp->d_flags & D_BADSECT) != 0) 809 bad144intern(wd); 810 #endif 811 } 812 813 int 814 wdioctl(dev, xfer, addr, flag, p) 815 dev_t dev; 816 u_long xfer; 817 caddr_t addr; 818 int flag; 819 struct proc *p; 820 { 821 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 822 int error; 823 824 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 825 826 if ((wd->sc_flags & WDF_LOADED) == 0) 827 return EIO; 828 829 switch (xfer) { 830 #ifdef HAS_BAD144_HANDLING 831 case DIOCSBAD: 832 if ((flag & FWRITE) == 0) 833 return EBADF; 834 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 835 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 836 bad144intern(wd); 837 return 0; 838 #endif 839 840 case DIOCGDINFO: 841 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 842 return 0; 843 844 case DIOCGPART: 845 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 846 ((struct partinfo *)addr)->part = 847 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 848 return 0; 849 850 case DIOCWDINFO: 851 case DIOCSDINFO: 852 if ((flag & FWRITE) == 0) 853 return EBADF; 854 855 if ((error = wdlock(wd)) != 0) 856 return error; 857 wd->sc_flags |= WDF_LABELLING; 858 859 error = setdisklabel(wd->sc_dk.dk_label, 860 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 861 wd->sc_dk.dk_cpulabel); 862 if (error == 0) { 863 if (wd->drvp->state > RECAL) 864 wd->drvp->drive_flags |= DRIVE_RESET; 865 if (xfer == DIOCWDINFO) 866 error = writedisklabel(WDLABELDEV(dev), 867 wdstrategy, wd->sc_dk.dk_label, 868 wd->sc_dk.dk_cpulabel); 869 } 870 871 wd->sc_flags &= ~WDF_LABELLING; 872 wdunlock(wd); 873 return error; 874 875 case DIOCWLABEL: 876 if ((flag & FWRITE) == 0) 877 return EBADF; 878 if (*(int *)addr) 879 wd->sc_flags |= WDF_WLABEL; 880 else 881 wd->sc_flags &= ~WDF_WLABEL; 882 return 0; 883 884 case DIOCGDEFLABEL: 885 wdgetdefaultlabel(wd, (struct disklabel *)addr); 886 return 0; 887 888 #ifdef notyet 889 case DIOCWFORMAT: 890 if ((flag & FWRITE) == 0) 891 return EBADF; 892 { 893 register struct format_op *fop; 894 struct iovec aiov; 895 struct uio auio; 896 897 fop = (struct format_op *)addr; 898 aiov.iov_base = fop->df_buf; 899 aiov.iov_len = fop->df_count; 900 auio.uio_iov = &aiov; 901 auio.uio_iovcnt = 1; 902 auio.uio_resid = fop->df_count; 903 auio.uio_segflg = 0; 904 auio.uio_offset = 905 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 906 auio.uio_procp = p; 907 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 908 &auio); 909 fop->df_count -= auio.uio_resid; 910 fop->df_reg[0] = wdc->sc_status; 911 fop->df_reg[1] = wdc->sc_error; 912 return error; 913 } 914 #endif 915 916 case WDCIOCCOMMAND: 917 /* 918 * Make sure this command is (relatively) safe first 919 */ 920 if ((((wdcreq_t *) addr)->flags & WDCCMD_READ) == 0 && 921 (flag & FWRITE) == 0) 922 return (EBADF); 923 { 924 struct wd_ioctl *wi; 925 wdcreq_t *wdcreq = (wdcreq_t *) addr; 926 int error; 927 928 wi = wi_get(); 929 wi->wi_softc = wd; 930 wi->wi_wdcreq = *wdcreq; 931 932 if (wdcreq->datalen && wdcreq->flags & 933 (WDCCMD_READ | WDCCMD_WRITE)) { 934 wi->wi_iov.iov_base = wdcreq->databuf; 935 wi->wi_iov.iov_len = wdcreq->datalen; 936 wi->wi_uio.uio_iov = &wi->wi_iov; 937 wi->wi_uio.uio_iovcnt = 1; 938 wi->wi_uio.uio_resid = wdcreq->datalen; 939 wi->wi_uio.uio_offset = 0; 940 wi->wi_uio.uio_segflg = UIO_USERSPACE; 941 wi->wi_uio.uio_rw = 942 (wdcreq->flags & WDCCMD_READ) ? B_READ : B_WRITE; 943 wi->wi_uio.uio_procp = p; 944 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 945 (wdcreq->flags & WDCCMD_READ) ? B_READ : B_WRITE, 946 minphys, &wi->wi_uio); 947 } else { 948 /* No need to call physio if we don't have any 949 user data */ 950 wi->wi_bp.b_flags = 0; 951 wi->wi_bp.b_data = 0; 952 wi->wi_bp.b_bcount = 0; 953 wi->wi_bp.b_dev = 0; 954 wi->wi_bp.b_proc = p; 955 wdioctlstrategy(&wi->wi_bp); 956 error = wi->wi_bp.b_error; 957 } 958 *wdcreq = wi->wi_wdcreq; 959 wi_free(wi); 960 return(error); 961 } 962 963 default: 964 return ENOTTY; 965 } 966 967 #ifdef DIAGNOSTIC 968 panic("wdioctl: impossible"); 969 #endif 970 } 971 972 #ifdef B_FORMAT 973 int 974 wdformat(struct buf *bp) 975 { 976 977 bp->b_flags |= B_FORMAT; 978 return wdstrategy(bp); 979 } 980 #endif 981 982 int 983 wdsize(dev) 984 dev_t dev; 985 { 986 struct wd_softc *wd; 987 int part, unit, omask; 988 int size; 989 990 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 991 992 unit = WDUNIT(dev); 993 if (unit >= wd_cd.cd_ndevs) 994 return (-1); 995 wd = wd_cd.cd_devs[unit]; 996 if (wd == NULL) 997 return (-1); 998 999 part = WDPART(dev); 1000 omask = wd->sc_dk.dk_openmask & (1 << part); 1001 1002 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1003 return (-1); 1004 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1005 size = -1; 1006 else 1007 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1008 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1009 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1010 return (-1); 1011 return (size); 1012 } 1013 1014 #ifndef __BDEVSW_DUMP_OLD_TYPE 1015 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1016 static int wddoingadump = 0; 1017 static int wddumprecalibrated = 0; 1018 static int wddumpmulti = 1; 1019 1020 /* 1021 * Dump core after a system crash. 1022 */ 1023 int 1024 wddump(dev, blkno, va, size) 1025 dev_t dev; 1026 daddr_t blkno; 1027 caddr_t va; 1028 size_t size; 1029 { 1030 struct wd_softc *wd; /* disk unit to do the I/O */ 1031 struct disklabel *lp; /* disk's disklabel */ 1032 int unit, part; 1033 int nblks; /* total number of sectors left to write */ 1034 int err; 1035 char errbuf[256]; 1036 1037 /* Check if recursive dump; if so, punt. */ 1038 if (wddoingadump) 1039 return EFAULT; 1040 wddoingadump = 1; 1041 1042 unit = WDUNIT(dev); 1043 if (unit >= wd_cd.cd_ndevs) 1044 return ENXIO; 1045 wd = wd_cd.cd_devs[unit]; 1046 if (wd == (struct wd_softc *)0) 1047 return ENXIO; 1048 1049 part = WDPART(dev); 1050 1051 /* Make sure it was initialized. */ 1052 if (wd->drvp->state < READY) 1053 return ENXIO; 1054 1055 /* Convert to disk sectors. Request must be a multiple of size. */ 1056 lp = wd->sc_dk.dk_label; 1057 if ((size % lp->d_secsize) != 0) 1058 return EFAULT; 1059 nblks = size / lp->d_secsize; 1060 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1061 1062 /* Check transfer bounds against partition size. */ 1063 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1064 return EINVAL; 1065 1066 /* Offset block number to start of partition. */ 1067 blkno += lp->d_partitions[part].p_offset; 1068 1069 /* Recalibrate, if first dump transfer. */ 1070 if (wddumprecalibrated == 0) { 1071 wddumpmulti = wd->sc_multi; 1072 wddumprecalibrated = 1; 1073 wd->drvp->state = RECAL; 1074 } 1075 1076 while (nblks > 0) { 1077 again: 1078 wd->sc_wdc_bio.blkno = blkno; 1079 wd->sc_wdc_bio.flags = ATA_POLL; 1080 if (wddumpmulti == 1) 1081 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1082 if (wd->sc_flags & WDF_LBA) 1083 wd->sc_wdc_bio.flags |= ATA_LBA; 1084 wd->sc_wdc_bio.bcount = 1085 min(nblks, wddumpmulti) * lp->d_secsize; 1086 wd->sc_wdc_bio.databuf = va; 1087 #ifndef WD_DUMP_NOT_TRUSTED 1088 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1089 case WDC_TRY_AGAIN: 1090 panic("wddump: try again"); 1091 break; 1092 case WDC_QUEUED: 1093 panic("wddump: polled command has been queued"); 1094 break; 1095 case WDC_COMPLETE: 1096 break; 1097 } 1098 switch(wd->sc_wdc_bio.error) { 1099 case TIMEOUT: 1100 printf("wddump: device timed out"); 1101 err = EIO; 1102 break; 1103 case ERR_DF: 1104 printf("wddump: drive fault"); 1105 err = EIO; 1106 break; 1107 case ERR_DMA: 1108 printf("wddump: DMA error"); 1109 err = EIO; 1110 break; 1111 case ERROR: 1112 errbuf[0] = '\0'; 1113 print_wderror(wd->sc_wdc_bio.r_error, errbuf); 1114 printf("wddump: %s", errbuf); 1115 err = EIO; 1116 break; 1117 case NOERROR: 1118 err = 0; 1119 break; 1120 default: 1121 panic("wddump: unknown error type"); 1122 } 1123 if (err != 0) { 1124 if (wddumpmulti != 1) { 1125 wddumpmulti = 1; /* retry in single-sector */ 1126 printf(", retrying\n"); 1127 goto again; 1128 } 1129 printf("\n"); 1130 return err; 1131 } 1132 #else /* WD_DUMP_NOT_TRUSTED */ 1133 /* Let's just talk about this first... */ 1134 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1135 unit, va, cylin, head, sector); 1136 delay(500 * 1000); /* half a second */ 1137 #endif 1138 1139 /* update block count */ 1140 nblks -= min(nblks, wddumpmulti); 1141 blkno += min(nblks, wddumpmulti); 1142 va += min(nblks, wddumpmulti) * lp->d_secsize; 1143 } 1144 1145 wddoingadump = 0; 1146 return 0; 1147 } 1148 #else /* __BDEVSW_DUMP_NEW_TYPE */ 1149 1150 1151 int 1152 wddump(dev, blkno, va, size) 1153 dev_t dev; 1154 daddr_t blkno; 1155 caddr_t va; 1156 size_t size; 1157 { 1158 1159 /* Not implemented. */ 1160 return ENXIO; 1161 } 1162 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 1163 1164 #ifdef HAS_BAD144_HANDLING 1165 /* 1166 * Internalize the bad sector table. 1167 */ 1168 void 1169 bad144intern(wd) 1170 struct wd_softc *wd; 1171 { 1172 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1173 struct disklabel *lp = wd->sc_dk.dk_label; 1174 int i = 0; 1175 1176 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1177 1178 for (; i < NBT_BAD; i++) { 1179 if (bt->bt_bad[i].bt_cyl == 0xffff) 1180 break; 1181 wd->sc_badsect[i] = 1182 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1183 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1184 (bt->bt_bad[i].bt_trksec & 0xff); 1185 } 1186 for (; i < NBT_BAD+1; i++) 1187 wd->sc_badsect[i] = -1; 1188 } 1189 #endif 1190 1191 void 1192 print_wderror(errno, buf) 1193 int errno; 1194 char *buf; 1195 { 1196 static char *errstr[] = {"address mark not found", "track 0 not found", 1197 "aborted command", "media change requested", "id not found", 1198 "media changed", "uncorrectable data error", "bad block detected"}; 1199 int i; 1200 char *sep = ""; 1201 1202 if (errno == 0) { 1203 sprintf(buf, "error not notified"); 1204 } 1205 1206 for (i = 0; i < 8; i++) { 1207 if (errno & (1 << i)) { 1208 buf += sprintf(buf, "%s %s", sep, errstr[i]); 1209 sep = ","; 1210 } 1211 } 1212 } 1213 1214 int 1215 wd_get_params(wd, flags, params) 1216 struct wd_softc *wd; 1217 u_int8_t flags; 1218 struct ataparams *params; 1219 { 1220 switch (ata_get_params(wd->drvp, flags, params)) { 1221 case CMD_AGAIN: 1222 return 1; 1223 case CMD_ERR: 1224 /* 1225 * We `know' there's a drive here; just assume it's old. 1226 * This geometry is only used to read the MBR and print a 1227 * (false) attach message. 1228 */ 1229 strncpy(params->atap_model, "ST506", 1230 sizeof params->atap_model); 1231 params->atap_config = ATA_CFG_FIXED; 1232 params->atap_cylinders = 1024; 1233 params->atap_heads = 8; 1234 params->atap_sectors = 17; 1235 params->atap_multi = 1; 1236 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1237 return 0; 1238 case CMD_OK: 1239 return 0; 1240 default: 1241 panic("wd_get_params: bad return code from ata_get_params"); 1242 /* NOTREACHED */ 1243 } 1244 } 1245 1246 /* 1247 * Allocate space for a ioctl queue structure. Mostly taken from 1248 * scsipi_ioctl.c 1249 */ 1250 struct wd_ioctl * 1251 wi_get() 1252 { 1253 struct wd_ioctl *wi; 1254 int s; 1255 1256 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK); 1257 memset(wi, 0, sizeof (struct wd_ioctl)); 1258 s = splbio(); 1259 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1260 splx(s); 1261 return (wi); 1262 } 1263 1264 /* 1265 * Free an ioctl structure and remove it from our list 1266 */ 1267 1268 void 1269 wi_free(wi) 1270 struct wd_ioctl *wi; 1271 { 1272 int s; 1273 1274 s = splbio(); 1275 LIST_REMOVE(wi, wi_list); 1276 splx(s); 1277 free(wi, M_TEMP); 1278 } 1279 1280 /* 1281 * Find a wd_ioctl structure based on the struct buf. 1282 */ 1283 1284 struct wd_ioctl * 1285 wi_find(bp) 1286 struct buf *bp; 1287 { 1288 struct wd_ioctl *wi; 1289 int s; 1290 1291 s = splbio(); 1292 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1293 if (bp == &wi->wi_bp) 1294 break; 1295 splx(s); 1296 return (wi); 1297 } 1298 1299 /* 1300 * Ioctl pseudo strategy routine 1301 * 1302 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1303 * happens here is: 1304 * 1305 * - wdioctl() queues a wd_ioctl structure. 1306 * 1307 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1308 * user space I/O is required. If physio() is called, physio() eventually 1309 * calls wdioctlstrategy(). 1310 * 1311 * - In either case, wdioctlstrategy() calls wdc_exec_command() 1312 * to perform the actual command 1313 * 1314 * The reason for the use of the pseudo strategy routine is because 1315 * when doing I/O to/from user space, physio _really_ wants to be in 1316 * the loop. We could put the entire buffer into the ioctl request 1317 * structure, but that won't scale if we want to do things like download 1318 * microcode. 1319 */ 1320 1321 void 1322 wdioctlstrategy(bp) 1323 struct buf *bp; 1324 { 1325 struct wd_ioctl *wi; 1326 struct wdc_command wdc_c; 1327 int error = 0; 1328 1329 wi = wi_find(bp); 1330 if (wi == NULL) { 1331 printf("user_strat: No ioctl\n"); 1332 error = EINVAL; 1333 goto bad; 1334 } 1335 1336 memset(&wdc_c, 0, sizeof(wdc_c)); 1337 1338 /* 1339 * Abort if physio broke up the transfer 1340 */ 1341 1342 if (bp->b_bcount != wi->wi_wdcreq.datalen) { 1343 printf("physio split wd ioctl request... cannot proceed\n"); 1344 error = EIO; 1345 goto bad; 1346 } 1347 1348 /* 1349 * Abort if we didn't get a buffer size that was a multiple of 1350 * our sector size (or was larger than NBBY) 1351 */ 1352 1353 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1354 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1355 (1 << NBBY)) { 1356 error = EINVAL; 1357 goto bad; 1358 } 1359 1360 /* 1361 * Make sure a timeout was supplied in the ioctl request 1362 */ 1363 1364 if (wi->wi_wdcreq.timeout == 0) { 1365 error = EINVAL; 1366 goto bad; 1367 } 1368 1369 if (wi->wi_wdcreq.flags & WDCCMD_READ) 1370 wdc_c.flags |= AT_READ; 1371 else if (wi->wi_wdcreq.flags & WDCCMD_WRITE) 1372 wdc_c.flags |= AT_WRITE; 1373 1374 wdc_c.flags |= AT_WAIT; 1375 1376 wdc_c.timeout = wi->wi_wdcreq.timeout; 1377 wdc_c.r_command = wi->wi_wdcreq.command; 1378 wdc_c.r_head = wi->wi_wdcreq.head & 0x0f; 1379 wdc_c.r_cyl = wi->wi_wdcreq.cylinder; 1380 wdc_c.r_sector = wi->wi_wdcreq.sec_num; 1381 wdc_c.r_count = wi->wi_wdcreq.sec_count; 1382 wdc_c.r_precomp = wi->wi_wdcreq.features; 1383 wdc_c.r_st_bmask = WDCS_DRDY; 1384 wdc_c.r_st_pmask = WDCS_DRDY; 1385 wdc_c.data = wi->wi_bp.b_data; 1386 wdc_c.bcount = wi->wi_bp.b_bcount; 1387 1388 if (wdc_exec_command(wi->wi_softc->drvp, &wdc_c) != WDC_COMPLETE) { 1389 wi->wi_wdcreq.retsts = WDCCMD_ERROR; 1390 goto bad; 1391 } 1392 1393 1394 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1395 if (wdc_c.flags & AT_ERROR) { 1396 wi->wi_wdcreq.retsts = WDCCMD_ERROR; 1397 wi->wi_wdcreq.error = wdc_c.r_error; 1398 } else if (wdc_c.flags & AT_DF) 1399 wi->wi_wdcreq.retsts = WDCCMD_DF; 1400 else 1401 wi->wi_wdcreq.retsts = WDCCMD_TIMEOUT; 1402 } else 1403 wi->wi_wdcreq.retsts = WDCCMD_OK; 1404 1405 bp->b_error = 0; 1406 biodone(bp); 1407 return; 1408 bad: 1409 bp->b_flags |= B_ERROR; 1410 bp->b_error = error; 1411 biodone(bp); 1412 } 1413
Indexes created Fri Sep 26 08:10:20 GMT 2025