wd.c revision 1.192
1 /* $NetBSD: wd.c,v 1.192 1999/02/21 00:15:42 hubertf 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 #ifndef WDCDEBUG 69 #define WDCDEBUG 70 #endif /* WDCDEBUG */ 71 72 #include "rnd.h" 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/conf.h> 78 #include <sys/file.h> 79 #include <sys/stat.h> 80 #include <sys/ioctl.h> 81 #include <sys/buf.h> 82 #include <sys/uio.h> 83 #include <sys/malloc.h> 84 #include <sys/device.h> 85 #include <sys/disklabel.h> 86 #include <sys/disk.h> 87 #include <sys/syslog.h> 88 #include <sys/proc.h> 89 #if NRND > 0 90 #include <sys/rnd.h> 91 #endif 92 93 #include <vm/vm.h> 94 95 #include <machine/intr.h> 96 #include <machine/bus.h> 97 98 #include <dev/ata/atareg.h> 99 #include <dev/ata/atavar.h> 100 #include <dev/ata/wdvar.h> 101 #include <dev/ic/wdcreg.h> 102 #include <sys/ataio.h> 103 #include "locators.h" 104 105 #define WAITTIME (4 * hz) /* time to wait for a completion */ 106 #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ 107 #define WDIORETRIES 5 /* number of retries before giving up */ 108 #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ 109 110 #define WDUNIT(dev) DISKUNIT(dev) 111 #define WDPART(dev) DISKPART(dev) 112 #define MAKEWDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 113 114 #define WDLABELDEV(dev) (MAKEWDDEV(major(dev), WDUNIT(dev), RAW_PART)) 115 116 #define DEBUG_INTR 0x01 117 #define DEBUG_XFERS 0x02 118 #define DEBUG_STATUS 0x04 119 #define DEBUG_FUNCS 0x08 120 #define DEBUG_PROBE 0x10 121 #ifdef WDCDEBUG 122 extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ 123 #define WDCDEBUG_PRINT(args, level) \ 124 if (wdcdebug_wd_mask & (level)) \ 125 printf args 126 #else 127 #define WDCDEBUG_PRINT(args, level) 128 #endif 129 130 struct wd_softc { 131 /* General disk infos */ 132 struct device sc_dev; 133 struct disk sc_dk; 134 struct buf sc_q; 135 /* IDE disk soft states */ 136 struct ata_bio sc_wdc_bio; /* current transfer */ 137 struct buf *sc_bp; /* buf being transfered */ 138 void *wdc_softc; /* pointer to our parent */ 139 struct ata_drive_datas *drvp; /* Our controller's infos */ 140 int openings; 141 struct ataparams sc_params;/* drive characteistics found */ 142 int sc_flags; 143 #define WDF_LOCKED 0x01 144 #define WDF_WANTED 0x02 145 #define WDF_WLABEL 0x04 /* label is writable */ 146 #define WDF_LABELLING 0x08 /* writing label */ 147 /* 148 * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is 149 * more fully implemented. 150 */ 151 #define WDF_LOADED 0x10 /* parameters loaded */ 152 #define WDF_WAIT 0x20 /* waiting for resources */ 153 #define WDF_LBA 0x40 /* using LBA mode */ 154 int sc_capacity; 155 int cyl; /* actual drive parameters */ 156 int heads; 157 int sectors; 158 int retries; /* number of xfer retry */ 159 #if NRND > 0 160 rndsource_element_t rnd_source; 161 #endif 162 }; 163 164 #define sc_drive sc_wdc_bio.drive 165 #define sc_mode sc_wdc_bio.mode 166 #define sc_multi sc_wdc_bio.multi 167 #define sc_badsect sc_wdc_bio.badsect 168 169 int wdprobe __P((struct device *, struct cfdata *, void *)); 170 void wdattach __P((struct device *, struct device *, void *)); 171 int wdprint __P((void *, char *)); 172 173 struct cfattach wd_ca = { 174 sizeof(struct wd_softc), wdprobe, wdattach 175 }; 176 177 extern struct cfdriver wd_cd; 178 179 /* 180 * Glue necessary to hook WDCIOCCOMMAND into physio 181 */ 182 183 struct wd_ioctl { 184 LIST_ENTRY(wd_ioctl) wi_list; 185 struct buf wi_bp; 186 struct uio wi_uio; 187 struct iovec wi_iov; 188 atareq_t wi_atareq; 189 struct wd_softc *wi_softc; 190 }; 191 192 LIST_HEAD(, wd_ioctl) wi_head; 193 194 struct wd_ioctl *wi_find __P((struct buf *)); 195 void wi_free __P((struct wd_ioctl *)); 196 struct wd_ioctl *wi_get __P((void)); 197 void wdioctlstrategy __P((struct buf *)); 198 199 void wdgetdefaultlabel __P((struct wd_softc *, struct disklabel *)); 200 void wdgetdisklabel __P((struct wd_softc *)); 201 void wdstrategy __P((struct buf *)); 202 void wdstart __P((void *)); 203 void __wdstart __P((struct wd_softc*, struct buf *)); 204 void wdrestart __P((void*)); 205 int wd_get_params __P((struct wd_softc *, u_int8_t, struct ataparams *)); 206 void wd_flushcache __P((struct wd_softc *, int)); 207 void wd_shutdown __P((void*)); 208 209 struct dkdriver wddkdriver = { wdstrategy }; 210 211 /* XXX: these should go elsewhere */ 212 cdev_decl(wd); 213 bdev_decl(wd); 214 215 #ifdef HAS_BAD144_HANDLING 216 static void bad144intern __P((struct wd_softc *)); 217 #endif 218 int wdlock __P((struct wd_softc *)); 219 void wdunlock __P((struct wd_softc *)); 220 221 int 222 wdprobe(parent, match, aux) 223 struct device *parent; 224 struct cfdata *match; 225 226 void *aux; 227 { 228 struct ata_atapi_attach *aa_link = aux; 229 230 if (aa_link == NULL) 231 return 0; 232 if (aa_link->aa_type != T_ATA) 233 return 0; 234 235 if (match->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT && 236 match->cf_loc[ATACF_CHANNEL] != aa_link->aa_channel) 237 return 0; 238 239 if (match->cf_loc[ATACF_DRIVE] != ATACF_DRIVE_DEFAULT && 240 match->cf_loc[ATACF_DRIVE] != aa_link->aa_drv_data->drive) 241 return 0; 242 return 1; 243 } 244 245 void 246 wdattach(parent, self, aux) 247 struct device *parent, *self; 248 void *aux; 249 { 250 struct wd_softc *wd = (void *)self; 251 struct ata_atapi_attach *aa_link= aux; 252 int i, blank; 253 char buf[41], c, *p, *q; 254 WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); 255 256 wd->openings = aa_link->aa_openings; 257 wd->drvp = aa_link->aa_drv_data;; 258 wd->wdc_softc = parent; 259 /* give back our softc to our caller */ 260 wd->drvp->drv_softc = &wd->sc_dev; 261 262 /* read our drive info */ 263 if (wd_get_params(wd, AT_POLL, &wd->sc_params) != 0) { 264 printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); 265 return; 266 } 267 268 for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; 269 i < sizeof(wd->sc_params.atap_model); i++) { 270 c = *p++; 271 if (c == '\0') 272 break; 273 if (c != ' ') { 274 if (blank) { 275 *q++ = ' '; 276 blank = 0; 277 } 278 *q++ = c; 279 } else 280 blank = 1; 281 } 282 *q++ = '\0'; 283 284 printf(": <%s>\n", buf); 285 286 if ((wd->sc_params.atap_multi & 0xff) > 1) { 287 wd->sc_multi = wd->sc_params.atap_multi & 0xff; 288 } else { 289 wd->sc_multi = 1; 290 } 291 292 printf("%s: drive supports %d-sector pio transfers,", 293 wd->sc_dev.dv_xname, wd->sc_multi); 294 295 /* Prior to ATA-4, LBA was optional. */ 296 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 297 wd->sc_flags |= WDF_LBA; 298 #if 0 299 /* ATA-4 requires LBA. */ 300 if (wd->sc_params.atap_ataversion != 0xffff && 301 wd->sc_params.atap_ataversion >= WDC_VER_ATA4) 302 wd->sc_flags |= WDF_LBA; 303 #endif 304 305 if ((wd->sc_flags & WDF_LBA) != 0) { 306 printf(" lba addressing\n"); 307 wd->sc_capacity = 308 (wd->sc_params.atap_capacity[1] << 16) | 309 wd->sc_params.atap_capacity[0]; 310 printf("%s: %dMB, %d cyl, %d head, %d sec, " 311 "%d bytes/sect x %d sectors\n", 312 self->dv_xname, 313 wd->sc_capacity / (1048576 / DEV_BSIZE), 314 wd->sc_params.atap_cylinders, 315 wd->sc_params.atap_heads, 316 wd->sc_params.atap_sectors, 317 DEV_BSIZE, 318 wd->sc_capacity); 319 } else { 320 printf(" chs addressing\n"); 321 wd->sc_capacity = 322 wd->sc_params.atap_cylinders * 323 wd->sc_params.atap_heads * 324 wd->sc_params.atap_sectors; 325 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sect x %d " 326 "sectors\n", self->dv_xname, 327 wd->sc_capacity / (1048576 / DEV_BSIZE), 328 wd->sc_params.atap_cylinders, 329 wd->sc_params.atap_heads, 330 wd->sc_params.atap_sectors, 331 DEV_BSIZE, 332 wd->sc_capacity); 333 } 334 WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", 335 self->dv_xname, wd->sc_params.atap_dmatiming_mimi, 336 wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); 337 /* 338 * Initialize and attach the disk structure. 339 */ 340 wd->sc_dk.dk_driver = &wddkdriver; 341 wd->sc_dk.dk_name = wd->sc_dev.dv_xname; 342 disk_attach(&wd->sc_dk); 343 wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; 344 if (shutdownhook_establish(wd_shutdown, wd) == NULL) 345 printf("%s: WARNING: unable to establish shutdown hook\n", 346 wd->sc_dev.dv_xname); 347 #if NRND > 0 348 rnd_attach_source(&wd->rnd_source, wd->sc_dev.dv_xname, RND_TYPE_DISK); 349 #endif 350 } 351 352 /* 353 * Read/write routine for a buffer. Validates the arguments and schedules the 354 * transfer. Does not wait for the transfer to complete. 355 */ 356 void 357 wdstrategy(bp) 358 struct buf *bp; 359 { 360 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(bp->b_dev)]; 361 int s; 362 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 363 DEBUG_XFERS); 364 365 /* Valid request? */ 366 if (bp->b_blkno < 0 || 367 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 368 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 369 bp->b_error = EINVAL; 370 goto bad; 371 } 372 373 /* If device invalidated (e.g. media change, door open), error. */ 374 if ((wd->sc_flags & WDF_LOADED) == 0) { 375 bp->b_error = EIO; 376 goto bad; 377 } 378 379 /* If it's a null transfer, return immediately. */ 380 if (bp->b_bcount == 0) 381 goto done; 382 383 /* 384 * Do bounds checking, adjust transfer. if error, process. 385 * If end of partition, just return. 386 */ 387 if (WDPART(bp->b_dev) != RAW_PART && 388 bounds_check_with_label(bp, wd->sc_dk.dk_label, 389 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 390 goto done; 391 /* Queue transfer on drive, activate drive and controller if idle. */ 392 s = splbio(); 393 disksort(&wd->sc_q, bp); 394 wdstart(wd); 395 splx(s); 396 return; 397 bad: 398 bp->b_flags |= B_ERROR; 399 done: 400 /* Toss transfer; we're done early. */ 401 bp->b_resid = bp->b_bcount; 402 biodone(bp); 403 } 404 405 /* 406 * Queue a drive for I/O. 407 */ 408 void 409 wdstart(arg) 410 void *arg; 411 { 412 struct wd_softc *wd = arg; 413 struct buf *dp, *bp=0; 414 415 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 416 DEBUG_XFERS); 417 while (wd->openings > 0) { 418 419 /* Is there a buf for us ? */ 420 dp = &wd->sc_q; 421 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 422 return; 423 dp->b_actf = bp->b_actf; 424 425 /* 426 * Make the command. First lock the device 427 */ 428 wd->openings--; 429 430 wd->retries = 0; 431 __wdstart(wd, bp); 432 } 433 } 434 435 void 436 __wdstart(wd, bp) 437 struct wd_softc *wd; 438 struct buf *bp; 439 { 440 daddr_t p_offset; 441 if (WDPART(bp->b_dev) != RAW_PART) 442 p_offset = 443 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 444 else 445 p_offset = 0; 446 wd->sc_wdc_bio.blkno = bp->b_blkno + p_offset; 447 wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 448 wd->sc_wdc_bio.blkdone =0; 449 wd->sc_bp = bp; 450 /* 451 * If we're retrying, retry in single-sector mode. This will give us 452 * the sector number of the problem, and will eventually allow the 453 * transfer to succeed. 454 */ 455 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 456 wd->sc_wdc_bio.flags = ATA_SINGLE; 457 else 458 wd->sc_wdc_bio.flags = 0; 459 if (wd->sc_flags & WDF_LBA) 460 wd->sc_wdc_bio.flags |= ATA_LBA; 461 if (bp->b_flags & B_READ) 462 wd->sc_wdc_bio.flags |= ATA_READ; 463 wd->sc_wdc_bio.bcount = bp->b_bcount; 464 wd->sc_wdc_bio.databuf = bp->b_data; 465 /* Instrumentation. */ 466 disk_busy(&wd->sc_dk); 467 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 468 case WDC_TRY_AGAIN: 469 timeout(wdrestart, wd, hz); 470 break; 471 case WDC_QUEUED: 472 break; 473 case WDC_COMPLETE: 474 wddone(wd); 475 break; 476 default: 477 panic("__wdstart: bad return code from wdc_ata_bio()"); 478 } 479 } 480 481 void 482 wddone(v) 483 void *v; 484 { 485 struct wd_softc *wd = v; 486 struct buf *bp = wd->sc_bp; 487 char buf[256], *errbuf = buf; 488 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 489 DEBUG_XFERS); 490 491 bp->b_resid = wd->sc_wdc_bio.bcount; 492 errbuf[0] = '\0'; 493 switch (wd->sc_wdc_bio.error) { 494 case ERR_DMA: 495 errbuf = "DMA error"; 496 goto retry; 497 case ERR_DF: 498 errbuf = "device fault"; 499 goto retry; 500 case TIMEOUT: 501 errbuf = "device timeout"; 502 goto retry; 503 case ERROR: 504 /* Don't care about media change bits */ 505 if (wd->sc_wdc_bio.r_error != 0 && 506 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 507 goto noerror; 508 ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 509 retry: /* Just reset and retry. Can we do more ? */ 510 wdc_reset_channel(wd->drvp); 511 diskerr(bp, "wd", errbuf, LOG_PRINTF, 512 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 513 if (wd->retries++ < WDIORETRIES) { 514 printf(", retrying\n"); 515 timeout(wdrestart, wd, RECOVERYTIME); 516 return; 517 } 518 printf("\n"); 519 bp->b_flags |= B_ERROR; 520 bp->b_error = EIO; 521 break; 522 case NOERROR: 523 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 524 printf("%s: soft error (corrected)\n", 525 wd->sc_dev.dv_xname); 526 } 527 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 528 #if NRND > 0 529 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 530 #endif 531 biodone(bp); 532 wd->openings++; 533 wdstart(wd); 534 } 535 536 void 537 wdrestart(v) 538 void *v; 539 { 540 struct wd_softc *wd = v; 541 struct buf *bp = wd->sc_bp; 542 int s; 543 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 544 DEBUG_XFERS); 545 546 s = splbio(); 547 __wdstart(v, bp); 548 splx(s); 549 } 550 551 int 552 wdread(dev, uio, flags) 553 dev_t dev; 554 struct uio *uio; 555 int flags; 556 { 557 558 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 559 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 560 } 561 562 int 563 wdwrite(dev, uio, flags) 564 dev_t dev; 565 struct uio *uio; 566 int flags; 567 { 568 569 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 570 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 571 } 572 573 /* 574 * Wait interruptibly for an exclusive lock. 575 * 576 * XXX 577 * Several drivers do this; it should be abstracted and made MP-safe. 578 */ 579 int 580 wdlock(wd) 581 struct wd_softc *wd; 582 { 583 int error; 584 int s; 585 586 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 587 588 s = splbio(); 589 590 while ((wd->sc_flags & WDF_LOCKED) != 0) { 591 wd->sc_flags |= WDF_WANTED; 592 if ((error = tsleep(wd, PRIBIO | PCATCH, 593 "wdlck", 0)) != 0) { 594 splx(s); 595 return error; 596 } 597 } 598 wd->sc_flags |= WDF_LOCKED; 599 splx(s); 600 return 0; 601 } 602 603 /* 604 * Unlock and wake up any waiters. 605 */ 606 void 607 wdunlock(wd) 608 struct wd_softc *wd; 609 { 610 611 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 612 613 wd->sc_flags &= ~WDF_LOCKED; 614 if ((wd->sc_flags & WDF_WANTED) != 0) { 615 wd->sc_flags &= ~WDF_WANTED; 616 wakeup(wd); 617 } 618 } 619 620 int 621 wdopen(dev, flag, fmt, p) 622 dev_t dev; 623 int flag, fmt; 624 struct proc *p; 625 { 626 struct wd_softc *wd; 627 int unit, part; 628 int error; 629 630 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 631 unit = WDUNIT(dev); 632 if (unit >= wd_cd.cd_ndevs) 633 return ENXIO; 634 wd = wd_cd.cd_devs[unit]; 635 if (wd == NULL) 636 return ENXIO; 637 638 /* 639 * If this is the first open of this device, add a reference 640 * to the adapter. 641 */ 642 if (wd->sc_dk.dk_openmask == 0 && 643 (error = wdc_ata_addref(wd->drvp)) != 0) 644 return (error); 645 646 if ((error = wdlock(wd)) != 0) 647 goto bad4; 648 649 if (wd->sc_dk.dk_openmask != 0) { 650 /* 651 * If any partition is open, but the disk has been invalidated, 652 * disallow further opens. 653 */ 654 if ((wd->sc_flags & WDF_LOADED) == 0) { 655 error = EIO; 656 goto bad3; 657 } 658 } else { 659 if ((wd->sc_flags & WDF_LOADED) == 0) { 660 wd->sc_flags |= WDF_LOADED; 661 662 /* Load the physical device parameters. */ 663 wd_get_params(wd, AT_WAIT, &wd->sc_params); 664 665 /* Load the partition info if not already loaded. */ 666 wdgetdisklabel(wd); 667 } 668 } 669 670 part = WDPART(dev); 671 672 /* Check that the partition exists. */ 673 if (part != RAW_PART && 674 (part >= wd->sc_dk.dk_label->d_npartitions || 675 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 676 error = ENXIO; 677 goto bad; 678 } 679 680 /* Insure only one open at a time. */ 681 switch (fmt) { 682 case S_IFCHR: 683 wd->sc_dk.dk_copenmask |= (1 << part); 684 break; 685 case S_IFBLK: 686 wd->sc_dk.dk_bopenmask |= (1 << part); 687 break; 688 } 689 wd->sc_dk.dk_openmask = 690 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 691 692 wdunlock(wd); 693 return 0; 694 695 bad: 696 if (wd->sc_dk.dk_openmask == 0) { 697 } 698 699 bad3: 700 wdunlock(wd); 701 bad4: 702 if (wd->sc_dk.dk_openmask == 0) 703 wdc_ata_delref(wd->drvp); 704 return error; 705 } 706 707 int 708 wdclose(dev, flag, fmt, p) 709 dev_t dev; 710 int flag, fmt; 711 struct proc *p; 712 { 713 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 714 int part = WDPART(dev); 715 int error; 716 717 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 718 if ((error = wdlock(wd)) != 0) 719 return error; 720 721 switch (fmt) { 722 case S_IFCHR: 723 wd->sc_dk.dk_copenmask &= ~(1 << part); 724 break; 725 case S_IFBLK: 726 wd->sc_dk.dk_bopenmask &= ~(1 << part); 727 break; 728 } 729 wd->sc_dk.dk_openmask = 730 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 731 732 if (wd->sc_dk.dk_openmask == 0) { 733 wd_flushcache(wd,0); 734 /* XXXX Must wait for I/O to complete! */ 735 736 wdc_ata_delref(wd->drvp); 737 } 738 739 wdunlock(wd); 740 return 0; 741 } 742 743 void 744 wdgetdefaultlabel(wd, lp) 745 struct wd_softc *wd; 746 struct disklabel *lp; 747 { 748 749 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 750 memset(lp, 0, sizeof(struct disklabel)); 751 752 lp->d_secsize = DEV_BSIZE; 753 lp->d_ntracks = wd->sc_params.atap_heads; 754 lp->d_nsectors = wd->sc_params.atap_sectors; 755 lp->d_ncylinders = wd->sc_params.atap_cylinders; 756 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 757 758 #if 0 759 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) { 760 lp->d_type = DTYPE_ST506; 761 strncpy(lp->d_typename, "ST506 disk", 16); 762 } else { 763 lp->d_type = DTYPE_ESDI; 764 strncpy(lp->d_typename, "ESDI/IDE", 765 sizeof lp->d_typename); 766 } 767 #endif 768 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 769 strncpy(lp->d_packname, "fictitious", 16); 770 lp->d_secperunit = wd->sc_capacity; 771 lp->d_rpm = 3600; 772 lp->d_interleave = 1; 773 lp->d_flags = 0; 774 775 lp->d_partitions[RAW_PART].p_offset = 0; 776 lp->d_partitions[RAW_PART].p_size = 777 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 778 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 779 lp->d_npartitions = RAW_PART + 1; 780 781 lp->d_magic = DISKMAGIC; 782 lp->d_magic2 = DISKMAGIC; 783 lp->d_checksum = dkcksum(lp); 784 } 785 786 /* 787 * Fabricate a default disk label, and try to read the correct one. 788 */ 789 void 790 wdgetdisklabel(wd) 791 struct wd_softc *wd; 792 { 793 struct disklabel *lp = wd->sc_dk.dk_label; 794 char *errstring; 795 796 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 797 798 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 799 800 wdgetdefaultlabel(wd, lp); 801 802 wd->sc_badsect[0] = -1; 803 804 if (wd->drvp->state > RECAL) 805 wd->drvp->drive_flags |= DRIVE_RESET; 806 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 807 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 808 if (errstring) { 809 /* 810 * This probably happened because the drive's default 811 * geometry doesn't match the DOS geometry. We 812 * assume the DOS geometry is now in the label and try 813 * again. XXX This is a kluge. 814 */ 815 if (wd->drvp->state > RECAL) 816 wd->drvp->drive_flags |= DRIVE_RESET; 817 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 818 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 819 } 820 if (errstring) { 821 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 822 return; 823 } 824 825 if (wd->drvp->state > RECAL) 826 wd->drvp->drive_flags |= DRIVE_RESET; 827 #ifdef HAS_BAD144_HANDLING 828 if ((lp->d_flags & D_BADSECT) != 0) 829 bad144intern(wd); 830 #endif 831 } 832 833 int 834 wdioctl(dev, xfer, addr, flag, p) 835 dev_t dev; 836 u_long xfer; 837 caddr_t addr; 838 int flag; 839 struct proc *p; 840 { 841 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 842 int error; 843 844 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 845 846 if ((wd->sc_flags & WDF_LOADED) == 0) 847 return EIO; 848 849 switch (xfer) { 850 #ifdef HAS_BAD144_HANDLING 851 case DIOCSBAD: 852 if ((flag & FWRITE) == 0) 853 return EBADF; 854 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 855 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 856 bad144intern(wd); 857 return 0; 858 #endif 859 860 case DIOCGDINFO: 861 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 862 return 0; 863 864 case DIOCGPART: 865 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 866 ((struct partinfo *)addr)->part = 867 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 868 return 0; 869 870 case DIOCWDINFO: 871 case DIOCSDINFO: 872 if ((flag & FWRITE) == 0) 873 return EBADF; 874 875 if ((error = wdlock(wd)) != 0) 876 return error; 877 wd->sc_flags |= WDF_LABELLING; 878 879 error = setdisklabel(wd->sc_dk.dk_label, 880 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 881 wd->sc_dk.dk_cpulabel); 882 if (error == 0) { 883 if (wd->drvp->state > RECAL) 884 wd->drvp->drive_flags |= DRIVE_RESET; 885 if (xfer == DIOCWDINFO) 886 error = writedisklabel(WDLABELDEV(dev), 887 wdstrategy, wd->sc_dk.dk_label, 888 wd->sc_dk.dk_cpulabel); 889 } 890 891 wd->sc_flags &= ~WDF_LABELLING; 892 wdunlock(wd); 893 return error; 894 895 case DIOCWLABEL: 896 if ((flag & FWRITE) == 0) 897 return EBADF; 898 if (*(int *)addr) 899 wd->sc_flags |= WDF_WLABEL; 900 else 901 wd->sc_flags &= ~WDF_WLABEL; 902 return 0; 903 904 case DIOCGDEFLABEL: 905 wdgetdefaultlabel(wd, (struct disklabel *)addr); 906 return 0; 907 908 #ifdef notyet 909 case DIOCWFORMAT: 910 if ((flag & FWRITE) == 0) 911 return EBADF; 912 { 913 register struct format_op *fop; 914 struct iovec aiov; 915 struct uio auio; 916 917 fop = (struct format_op *)addr; 918 aiov.iov_base = fop->df_buf; 919 aiov.iov_len = fop->df_count; 920 auio.uio_iov = &aiov; 921 auio.uio_iovcnt = 1; 922 auio.uio_resid = fop->df_count; 923 auio.uio_segflg = 0; 924 auio.uio_offset = 925 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 926 auio.uio_procp = p; 927 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 928 &auio); 929 fop->df_count -= auio.uio_resid; 930 fop->df_reg[0] = wdc->sc_status; 931 fop->df_reg[1] = wdc->sc_error; 932 return error; 933 } 934 #endif 935 936 case ATAIOCCOMMAND: 937 /* 938 * Make sure this command is (relatively) safe first 939 */ 940 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 941 (flag & FWRITE) == 0) 942 return (EBADF); 943 { 944 struct wd_ioctl *wi; 945 atareq_t *atareq = (atareq_t *) addr; 946 int error; 947 948 wi = wi_get(); 949 wi->wi_softc = wd; 950 wi->wi_atareq = *atareq; 951 952 if (atareq->datalen && atareq->flags & 953 (ATACMD_READ | ATACMD_WRITE)) { 954 wi->wi_iov.iov_base = atareq->databuf; 955 wi->wi_iov.iov_len = atareq->datalen; 956 wi->wi_uio.uio_iov = &wi->wi_iov; 957 wi->wi_uio.uio_iovcnt = 1; 958 wi->wi_uio.uio_resid = atareq->datalen; 959 wi->wi_uio.uio_offset = 0; 960 wi->wi_uio.uio_segflg = UIO_USERSPACE; 961 wi->wi_uio.uio_rw = 962 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 963 wi->wi_uio.uio_procp = p; 964 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 965 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 966 minphys, &wi->wi_uio); 967 } else { 968 /* No need to call physio if we don't have any 969 user data */ 970 wi->wi_bp.b_flags = 0; 971 wi->wi_bp.b_data = 0; 972 wi->wi_bp.b_bcount = 0; 973 wi->wi_bp.b_dev = 0; 974 wi->wi_bp.b_proc = p; 975 wdioctlstrategy(&wi->wi_bp); 976 error = wi->wi_bp.b_error; 977 } 978 *atareq = wi->wi_atareq; 979 wi_free(wi); 980 return(error); 981 } 982 983 default: 984 return ENOTTY; 985 } 986 987 #ifdef DIAGNOSTIC 988 panic("wdioctl: impossible"); 989 #endif 990 } 991 992 #ifdef B_FORMAT 993 int 994 wdformat(struct buf *bp) 995 { 996 997 bp->b_flags |= B_FORMAT; 998 return wdstrategy(bp); 999 } 1000 #endif 1001 1002 int 1003 wdsize(dev) 1004 dev_t dev; 1005 { 1006 struct wd_softc *wd; 1007 int part, unit, omask; 1008 int size; 1009 1010 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1011 1012 unit = WDUNIT(dev); 1013 if (unit >= wd_cd.cd_ndevs) 1014 return (-1); 1015 wd = wd_cd.cd_devs[unit]; 1016 if (wd == NULL) 1017 return (-1); 1018 1019 part = WDPART(dev); 1020 omask = wd->sc_dk.dk_openmask & (1 << part); 1021 1022 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1023 return (-1); 1024 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1025 size = -1; 1026 else 1027 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1028 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1029 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1030 return (-1); 1031 return (size); 1032 } 1033 1034 #ifndef __BDEVSW_DUMP_OLD_TYPE 1035 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1036 static int wddoingadump = 0; 1037 static int wddumprecalibrated = 0; 1038 static int wddumpmulti = 1; 1039 1040 /* 1041 * Dump core after a system crash. 1042 */ 1043 int 1044 wddump(dev, blkno, va, size) 1045 dev_t dev; 1046 daddr_t blkno; 1047 caddr_t va; 1048 size_t size; 1049 { 1050 struct wd_softc *wd; /* disk unit to do the I/O */ 1051 struct disklabel *lp; /* disk's disklabel */ 1052 int unit, part; 1053 int nblks; /* total number of sectors left to write */ 1054 int err; 1055 char errbuf[256]; 1056 1057 /* Check if recursive dump; if so, punt. */ 1058 if (wddoingadump) 1059 return EFAULT; 1060 wddoingadump = 1; 1061 1062 unit = WDUNIT(dev); 1063 if (unit >= wd_cd.cd_ndevs) 1064 return ENXIO; 1065 wd = wd_cd.cd_devs[unit]; 1066 if (wd == (struct wd_softc *)0) 1067 return ENXIO; 1068 1069 part = WDPART(dev); 1070 1071 /* Make sure it was initialized. */ 1072 if (wd->drvp->state < READY) 1073 return ENXIO; 1074 1075 /* Convert to disk sectors. Request must be a multiple of size. */ 1076 lp = wd->sc_dk.dk_label; 1077 if ((size % lp->d_secsize) != 0) 1078 return EFAULT; 1079 nblks = size / lp->d_secsize; 1080 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1081 1082 /* Check transfer bounds against partition size. */ 1083 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1084 return EINVAL; 1085 1086 /* Offset block number to start of partition. */ 1087 blkno += lp->d_partitions[part].p_offset; 1088 1089 /* Recalibrate, if first dump transfer. */ 1090 if (wddumprecalibrated == 0) { 1091 wddumpmulti = wd->sc_multi; 1092 wddumprecalibrated = 1; 1093 wd->drvp->state = RECAL; 1094 } 1095 1096 while (nblks > 0) { 1097 again: 1098 wd->sc_wdc_bio.blkno = blkno; 1099 wd->sc_wdc_bio.flags = ATA_POLL; 1100 if (wddumpmulti == 1) 1101 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1102 if (wd->sc_flags & WDF_LBA) 1103 wd->sc_wdc_bio.flags |= ATA_LBA; 1104 wd->sc_wdc_bio.bcount = 1105 min(nblks, wddumpmulti) * lp->d_secsize; 1106 wd->sc_wdc_bio.databuf = va; 1107 #ifndef WD_DUMP_NOT_TRUSTED 1108 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1109 case WDC_TRY_AGAIN: 1110 panic("wddump: try again"); 1111 break; 1112 case WDC_QUEUED: 1113 panic("wddump: polled command has been queued"); 1114 break; 1115 case WDC_COMPLETE: 1116 break; 1117 } 1118 switch(wd->sc_wdc_bio.error) { 1119 case TIMEOUT: 1120 printf("wddump: device timed out"); 1121 err = EIO; 1122 break; 1123 case ERR_DF: 1124 printf("wddump: drive fault"); 1125 err = EIO; 1126 break; 1127 case ERR_DMA: 1128 printf("wddump: DMA error"); 1129 err = EIO; 1130 break; 1131 case ERROR: 1132 errbuf[0] = '\0'; 1133 ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 1134 printf("wddump: %s", errbuf); 1135 err = EIO; 1136 break; 1137 case NOERROR: 1138 err = 0; 1139 break; 1140 default: 1141 panic("wddump: unknown error type"); 1142 } 1143 if (err != 0) { 1144 if (wddumpmulti != 1) { 1145 wddumpmulti = 1; /* retry in single-sector */ 1146 printf(", retrying\n"); 1147 goto again; 1148 } 1149 printf("\n"); 1150 return err; 1151 } 1152 #else /* WD_DUMP_NOT_TRUSTED */ 1153 /* Let's just talk about this first... */ 1154 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1155 unit, va, cylin, head, sector); 1156 delay(500 * 1000); /* half a second */ 1157 #endif 1158 1159 /* update block count */ 1160 nblks -= min(nblks, wddumpmulti); 1161 blkno += min(nblks, wddumpmulti); 1162 va += min(nblks, wddumpmulti) * lp->d_secsize; 1163 } 1164 1165 wddoingadump = 0; 1166 return 0; 1167 } 1168 #else /* __BDEVSW_DUMP_NEW_TYPE */ 1169 1170 1171 int 1172 wddump(dev, blkno, va, size) 1173 dev_t dev; 1174 daddr_t blkno; 1175 caddr_t va; 1176 size_t size; 1177 { 1178 1179 /* Not implemented. */ 1180 return ENXIO; 1181 } 1182 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 1183 1184 #ifdef HAS_BAD144_HANDLING 1185 /* 1186 * Internalize the bad sector table. 1187 */ 1188 void 1189 bad144intern(wd) 1190 struct wd_softc *wd; 1191 { 1192 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1193 struct disklabel *lp = wd->sc_dk.dk_label; 1194 int i = 0; 1195 1196 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1197 1198 for (; i < NBT_BAD; i++) { 1199 if (bt->bt_bad[i].bt_cyl == 0xffff) 1200 break; 1201 wd->sc_badsect[i] = 1202 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1203 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1204 (bt->bt_bad[i].bt_trksec & 0xff); 1205 } 1206 for (; i < NBT_BAD+1; i++) 1207 wd->sc_badsect[i] = -1; 1208 } 1209 #endif 1210 1211 int 1212 wd_get_params(wd, flags, params) 1213 struct wd_softc *wd; 1214 u_int8_t flags; 1215 struct ataparams *params; 1216 { 1217 switch (ata_get_params(wd->drvp, flags, params)) { 1218 case CMD_AGAIN: 1219 return 1; 1220 case CMD_ERR: 1221 /* 1222 * We `know' there's a drive here; just assume it's old. 1223 * This geometry is only used to read the MBR and print a 1224 * (false) attach message. 1225 */ 1226 strncpy(params->atap_model, "ST506", 1227 sizeof params->atap_model); 1228 params->atap_config = ATA_CFG_FIXED; 1229 params->atap_cylinders = 1024; 1230 params->atap_heads = 8; 1231 params->atap_sectors = 17; 1232 params->atap_multi = 1; 1233 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1234 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1235 return 0; 1236 case CMD_OK: 1237 return 0; 1238 default: 1239 panic("wd_get_params: bad return code from ata_get_params"); 1240 /* NOTREACHED */ 1241 } 1242 } 1243 1244 void 1245 wd_flushcache(wd, flags) 1246 struct wd_softc *wd; 1247 int flags; 1248 { 1249 struct wdc_command wdc_c; 1250 1251 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1252 return; 1253 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1254 wdc_c.r_command = WDCC_FLUSHCACHE; 1255 wdc_c.r_st_bmask = WDCS_DRDY; 1256 wdc_c.r_st_pmask = WDCS_DRDY; 1257 wdc_c.flags = flags | AT_WAIT; 1258 wdc_c.timeout = 30000; /* 30s timeout */ 1259 if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1260 printf("%s: flush cache command didn't complete\n", 1261 wd->sc_dev.dv_xname); 1262 } 1263 if (wdc_c.flags & AT_TIMEOU) { 1264 printf("%s: flush cache command timeout\n", 1265 wd->sc_dev.dv_xname); 1266 } 1267 if (wdc_c.flags & AT_DF) { 1268 printf("%s: flush cache command: drive fault\n", 1269 wd->sc_dev.dv_xname); 1270 } 1271 /* 1272 * Ignore error register, it shouldn't report anything else 1273 * than COMMAND ABORTED, which means the device doesn't support 1274 * flush cache 1275 */ 1276 } 1277 1278 void 1279 wd_shutdown(arg) 1280 void *arg; 1281 { 1282 struct wd_softc *wd = arg; 1283 wd_flushcache(wd, ATA_POLL); 1284 } 1285 1286 /* 1287 * Allocate space for a ioctl queue structure. Mostly taken from 1288 * scsipi_ioctl.c 1289 */ 1290 struct wd_ioctl * 1291 wi_get() 1292 { 1293 struct wd_ioctl *wi; 1294 int s; 1295 1296 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK); 1297 memset(wi, 0, sizeof (struct wd_ioctl)); 1298 s = splbio(); 1299 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1300 splx(s); 1301 return (wi); 1302 } 1303 1304 /* 1305 * Free an ioctl structure and remove it from our list 1306 */ 1307 1308 void 1309 wi_free(wi) 1310 struct wd_ioctl *wi; 1311 { 1312 int s; 1313 1314 s = splbio(); 1315 LIST_REMOVE(wi, wi_list); 1316 splx(s); 1317 free(wi, M_TEMP); 1318 } 1319 1320 /* 1321 * Find a wd_ioctl structure based on the struct buf. 1322 */ 1323 1324 struct wd_ioctl * 1325 wi_find(bp) 1326 struct buf *bp; 1327 { 1328 struct wd_ioctl *wi; 1329 int s; 1330 1331 s = splbio(); 1332 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1333 if (bp == &wi->wi_bp) 1334 break; 1335 splx(s); 1336 return (wi); 1337 } 1338 1339 /* 1340 * Ioctl pseudo strategy routine 1341 * 1342 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1343 * happens here is: 1344 * 1345 * - wdioctl() queues a wd_ioctl structure. 1346 * 1347 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1348 * user space I/O is required. If physio() is called, physio() eventually 1349 * calls wdioctlstrategy(). 1350 * 1351 * - In either case, wdioctlstrategy() calls wdc_exec_command() 1352 * to perform the actual command 1353 * 1354 * The reason for the use of the pseudo strategy routine is because 1355 * when doing I/O to/from user space, physio _really_ wants to be in 1356 * the loop. We could put the entire buffer into the ioctl request 1357 * structure, but that won't scale if we want to do things like download 1358 * microcode. 1359 */ 1360 1361 void 1362 wdioctlstrategy(bp) 1363 struct buf *bp; 1364 { 1365 struct wd_ioctl *wi; 1366 struct wdc_command wdc_c; 1367 int error = 0; 1368 1369 wi = wi_find(bp); 1370 if (wi == NULL) { 1371 printf("user_strat: No ioctl\n"); 1372 error = EINVAL; 1373 goto bad; 1374 } 1375 1376 memset(&wdc_c, 0, sizeof(wdc_c)); 1377 1378 /* 1379 * Abort if physio broke up the transfer 1380 */ 1381 1382 if (bp->b_bcount != wi->wi_atareq.datalen) { 1383 printf("physio split wd ioctl request... cannot proceed\n"); 1384 error = EIO; 1385 goto bad; 1386 } 1387 1388 /* 1389 * Abort if we didn't get a buffer size that was a multiple of 1390 * our sector size (or was larger than NBBY) 1391 */ 1392 1393 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1394 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1395 (1 << NBBY)) { 1396 error = EINVAL; 1397 goto bad; 1398 } 1399 1400 /* 1401 * Make sure a timeout was supplied in the ioctl request 1402 */ 1403 1404 if (wi->wi_atareq.timeout == 0) { 1405 error = EINVAL; 1406 goto bad; 1407 } 1408 1409 if (wi->wi_atareq.flags & ATACMD_READ) 1410 wdc_c.flags |= AT_READ; 1411 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1412 wdc_c.flags |= AT_WRITE; 1413 1414 if (wi->wi_atareq.flags & ATACMD_READREG) 1415 wdc_c.flags |= AT_READREG; 1416 1417 wdc_c.flags |= AT_WAIT; 1418 1419 wdc_c.timeout = wi->wi_atareq.timeout; 1420 wdc_c.r_command = wi->wi_atareq.command; 1421 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1422 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1423 wdc_c.r_sector = wi->wi_atareq.sec_num; 1424 wdc_c.r_count = wi->wi_atareq.sec_count; 1425 wdc_c.r_precomp = wi->wi_atareq.features; 1426 wdc_c.r_st_bmask = WDCS_DRDY; 1427 wdc_c.r_st_pmask = WDCS_DRDY; 1428 wdc_c.data = wi->wi_bp.b_data; 1429 wdc_c.bcount = wi->wi_bp.b_bcount; 1430 1431 if (wdc_exec_command(wi->wi_softc->drvp, &wdc_c) != WDC_COMPLETE) { 1432 wi->wi_atareq.retsts = ATACMD_ERROR; 1433 goto bad; 1434 } 1435 1436 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1437 if (wdc_c.flags & AT_ERROR) { 1438 wi->wi_atareq.retsts = ATACMD_ERROR; 1439 wi->wi_atareq.error = wdc_c.r_error; 1440 } else if (wdc_c.flags & AT_DF) 1441 wi->wi_atareq.retsts = ATACMD_DF; 1442 else 1443 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1444 } else { 1445 wi->wi_atareq.retsts = ATACMD_OK; 1446 if (wi->wi_atareq.flags & ATACMD_READREG) { 1447 wi->wi_atareq.head = wdc_c.r_head ; 1448 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1449 wi->wi_atareq.sec_num = wdc_c.r_sector; 1450 wi->wi_atareq.sec_count = wdc_c.r_count; 1451 wi->wi_atareq.features = wdc_c.r_precomp; 1452 wi->wi_atareq.error = wdc_c.r_error; 1453 } 1454 } 1455 1456 bp->b_error = 0; 1457 biodone(bp); 1458 return; 1459 bad: 1460 bp->b_flags |= B_ERROR; 1461 bp->b_error = error; 1462 biodone(bp); 1463 } 1464
Indexes created Mon Sep 29 21:09:56 GMT 2025