wd.c revision 1.195
1 /* $NetBSD: wd.c,v 1.195 1999/09/22 09:51:03 enami 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, 349 RND_TYPE_DISK, 0); 350 #endif 351 } 352 353 /* 354 * Read/write routine for a buffer. Validates the arguments and schedules the 355 * transfer. Does not wait for the transfer to complete. 356 */ 357 void 358 wdstrategy(bp) 359 struct buf *bp; 360 { 361 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(bp->b_dev)]; 362 int s; 363 WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), 364 DEBUG_XFERS); 365 366 /* Valid request? */ 367 if (bp->b_blkno < 0 || 368 (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || 369 (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { 370 bp->b_error = EINVAL; 371 goto bad; 372 } 373 374 /* If device invalidated (e.g. media change, door open), error. */ 375 if ((wd->sc_flags & WDF_LOADED) == 0) { 376 bp->b_error = EIO; 377 goto bad; 378 } 379 380 /* If it's a null transfer, return immediately. */ 381 if (bp->b_bcount == 0) 382 goto done; 383 384 /* 385 * Do bounds checking, adjust transfer. if error, process. 386 * If end of partition, just return. 387 */ 388 if (WDPART(bp->b_dev) != RAW_PART && 389 bounds_check_with_label(bp, wd->sc_dk.dk_label, 390 (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) 391 goto done; 392 /* Queue transfer on drive, activate drive and controller if idle. */ 393 s = splbio(); 394 disksort(&wd->sc_q, bp); 395 wdstart(wd); 396 splx(s); 397 return; 398 bad: 399 bp->b_flags |= B_ERROR; 400 done: 401 /* Toss transfer; we're done early. */ 402 bp->b_resid = bp->b_bcount; 403 biodone(bp); 404 } 405 406 /* 407 * Queue a drive for I/O. 408 */ 409 void 410 wdstart(arg) 411 void *arg; 412 { 413 struct wd_softc *wd = arg; 414 struct buf *dp, *bp=0; 415 416 WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), 417 DEBUG_XFERS); 418 while (wd->openings > 0) { 419 420 /* Is there a buf for us ? */ 421 dp = &wd->sc_q; 422 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 423 return; 424 dp->b_actf = bp->b_actf; 425 426 /* 427 * Make the command. First lock the device 428 */ 429 wd->openings--; 430 431 wd->retries = 0; 432 __wdstart(wd, bp); 433 } 434 } 435 436 void 437 __wdstart(wd, bp) 438 struct wd_softc *wd; 439 struct buf *bp; 440 { 441 daddr_t p_offset; 442 if (WDPART(bp->b_dev) != RAW_PART) 443 p_offset = 444 wd->sc_dk.dk_label->d_partitions[WDPART(bp->b_dev)].p_offset; 445 else 446 p_offset = 0; 447 wd->sc_wdc_bio.blkno = bp->b_blkno + p_offset; 448 wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 449 wd->sc_wdc_bio.blkdone =0; 450 wd->sc_bp = bp; 451 /* 452 * If we're retrying, retry in single-sector mode. This will give us 453 * the sector number of the problem, and will eventually allow the 454 * transfer to succeed. 455 */ 456 if (wd->sc_multi == 1 || wd->retries >= WDIORETRIES_SINGLE) 457 wd->sc_wdc_bio.flags = ATA_SINGLE; 458 else 459 wd->sc_wdc_bio.flags = 0; 460 if (wd->sc_flags & WDF_LBA) 461 wd->sc_wdc_bio.flags |= ATA_LBA; 462 if (bp->b_flags & B_READ) 463 wd->sc_wdc_bio.flags |= ATA_READ; 464 wd->sc_wdc_bio.bcount = bp->b_bcount; 465 wd->sc_wdc_bio.databuf = bp->b_data; 466 /* Instrumentation. */ 467 disk_busy(&wd->sc_dk); 468 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 469 case WDC_TRY_AGAIN: 470 timeout(wdrestart, wd, hz); 471 break; 472 case WDC_QUEUED: 473 case WDC_COMPLETE: 474 break; 475 default: 476 panic("__wdstart: bad return code from wdc_ata_bio()"); 477 } 478 } 479 480 void 481 wddone(v) 482 void *v; 483 { 484 struct wd_softc *wd = v; 485 struct buf *bp = wd->sc_bp; 486 char buf[256], *errbuf = buf; 487 WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), 488 DEBUG_XFERS); 489 490 bp->b_resid = wd->sc_wdc_bio.bcount; 491 errbuf[0] = '\0'; 492 switch (wd->sc_wdc_bio.error) { 493 case ERR_DMA: 494 errbuf = "DMA error"; 495 goto retry; 496 case ERR_DF: 497 errbuf = "device fault"; 498 goto retry; 499 case TIMEOUT: 500 errbuf = "device timeout"; 501 goto retry; 502 case ERROR: 503 /* Don't care about media change bits */ 504 if (wd->sc_wdc_bio.r_error != 0 && 505 (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) 506 goto noerror; 507 ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 508 retry: /* Just reset and retry. Can we do more ? */ 509 wdc_reset_channel(wd->drvp); 510 diskerr(bp, "wd", errbuf, LOG_PRINTF, 511 wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); 512 if (wd->retries++ < WDIORETRIES) { 513 printf(", retrying\n"); 514 timeout(wdrestart, wd, RECOVERYTIME); 515 return; 516 } 517 printf("\n"); 518 bp->b_flags |= B_ERROR; 519 bp->b_error = EIO; 520 break; 521 case NOERROR: 522 noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) 523 printf("%s: soft error (corrected)\n", 524 wd->sc_dev.dv_xname); 525 } 526 disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid)); 527 #if NRND > 0 528 rnd_add_uint32(&wd->rnd_source, bp->b_blkno); 529 #endif 530 biodone(bp); 531 wd->openings++; 532 wdstart(wd); 533 } 534 535 void 536 wdrestart(v) 537 void *v; 538 { 539 struct wd_softc *wd = v; 540 struct buf *bp = wd->sc_bp; 541 int s; 542 WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), 543 DEBUG_XFERS); 544 545 s = splbio(); 546 __wdstart(v, bp); 547 splx(s); 548 } 549 550 int 551 wdread(dev, uio, flags) 552 dev_t dev; 553 struct uio *uio; 554 int flags; 555 { 556 557 WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); 558 return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); 559 } 560 561 int 562 wdwrite(dev, uio, flags) 563 dev_t dev; 564 struct uio *uio; 565 int flags; 566 { 567 568 WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); 569 return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); 570 } 571 572 /* 573 * Wait interruptibly for an exclusive lock. 574 * 575 * XXX 576 * Several drivers do this; it should be abstracted and made MP-safe. 577 */ 578 int 579 wdlock(wd) 580 struct wd_softc *wd; 581 { 582 int error; 583 int s; 584 585 WDCDEBUG_PRINT(("wdlock\n"), DEBUG_FUNCS); 586 587 s = splbio(); 588 589 while ((wd->sc_flags & WDF_LOCKED) != 0) { 590 wd->sc_flags |= WDF_WANTED; 591 if ((error = tsleep(wd, PRIBIO | PCATCH, 592 "wdlck", 0)) != 0) { 593 splx(s); 594 return error; 595 } 596 } 597 wd->sc_flags |= WDF_LOCKED; 598 splx(s); 599 return 0; 600 } 601 602 /* 603 * Unlock and wake up any waiters. 604 */ 605 void 606 wdunlock(wd) 607 struct wd_softc *wd; 608 { 609 610 WDCDEBUG_PRINT(("wdunlock\n"), DEBUG_FUNCS); 611 612 wd->sc_flags &= ~WDF_LOCKED; 613 if ((wd->sc_flags & WDF_WANTED) != 0) { 614 wd->sc_flags &= ~WDF_WANTED; 615 wakeup(wd); 616 } 617 } 618 619 int 620 wdopen(dev, flag, fmt, p) 621 dev_t dev; 622 int flag, fmt; 623 struct proc *p; 624 { 625 struct wd_softc *wd; 626 int unit, part; 627 int error; 628 629 WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); 630 unit = WDUNIT(dev); 631 if (unit >= wd_cd.cd_ndevs) 632 return ENXIO; 633 wd = wd_cd.cd_devs[unit]; 634 if (wd == NULL) 635 return ENXIO; 636 637 /* 638 * If this is the first open of this device, add a reference 639 * to the adapter. 640 */ 641 if (wd->sc_dk.dk_openmask == 0 && 642 (error = wdc_ata_addref(wd->drvp)) != 0) 643 return (error); 644 645 if ((error = wdlock(wd)) != 0) 646 goto bad4; 647 648 if (wd->sc_dk.dk_openmask != 0) { 649 /* 650 * If any partition is open, but the disk has been invalidated, 651 * disallow further opens. 652 */ 653 if ((wd->sc_flags & WDF_LOADED) == 0) { 654 error = EIO; 655 goto bad3; 656 } 657 } else { 658 if ((wd->sc_flags & WDF_LOADED) == 0) { 659 wd->sc_flags |= WDF_LOADED; 660 661 /* Load the physical device parameters. */ 662 wd_get_params(wd, AT_WAIT, &wd->sc_params); 663 664 /* Load the partition info if not already loaded. */ 665 wdgetdisklabel(wd); 666 } 667 } 668 669 part = WDPART(dev); 670 671 /* Check that the partition exists. */ 672 if (part != RAW_PART && 673 (part >= wd->sc_dk.dk_label->d_npartitions || 674 wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 675 error = ENXIO; 676 goto bad; 677 } 678 679 /* Insure only one open at a time. */ 680 switch (fmt) { 681 case S_IFCHR: 682 wd->sc_dk.dk_copenmask |= (1 << part); 683 break; 684 case S_IFBLK: 685 wd->sc_dk.dk_bopenmask |= (1 << part); 686 break; 687 } 688 wd->sc_dk.dk_openmask = 689 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 690 691 wdunlock(wd); 692 return 0; 693 694 bad: 695 if (wd->sc_dk.dk_openmask == 0) { 696 } 697 698 bad3: 699 wdunlock(wd); 700 bad4: 701 if (wd->sc_dk.dk_openmask == 0) 702 wdc_ata_delref(wd->drvp); 703 return error; 704 } 705 706 int 707 wdclose(dev, flag, fmt, p) 708 dev_t dev; 709 int flag, fmt; 710 struct proc *p; 711 { 712 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 713 int part = WDPART(dev); 714 int error; 715 716 WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); 717 if ((error = wdlock(wd)) != 0) 718 return error; 719 720 switch (fmt) { 721 case S_IFCHR: 722 wd->sc_dk.dk_copenmask &= ~(1 << part); 723 break; 724 case S_IFBLK: 725 wd->sc_dk.dk_bopenmask &= ~(1 << part); 726 break; 727 } 728 wd->sc_dk.dk_openmask = 729 wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; 730 731 if (wd->sc_dk.dk_openmask == 0) { 732 wd_flushcache(wd, AT_WAIT); 733 /* XXXX Must wait for I/O to complete! */ 734 735 wdc_ata_delref(wd->drvp); 736 } 737 738 wdunlock(wd); 739 return 0; 740 } 741 742 void 743 wdgetdefaultlabel(wd, lp) 744 struct wd_softc *wd; 745 struct disklabel *lp; 746 { 747 748 WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); 749 memset(lp, 0, sizeof(struct disklabel)); 750 751 lp->d_secsize = DEV_BSIZE; 752 lp->d_ntracks = wd->sc_params.atap_heads; 753 lp->d_nsectors = wd->sc_params.atap_sectors; 754 lp->d_ncylinders = wd->sc_params.atap_cylinders; 755 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 756 757 #if 0 758 if (strcmp(wd->sc_params.atap_model, "ST506") == 0) { 759 lp->d_type = DTYPE_ST506; 760 strncpy(lp->d_typename, "ST506 disk", 16); 761 } else { 762 lp->d_type = DTYPE_ESDI; 763 strncpy(lp->d_typename, "ESDI/IDE", 764 sizeof lp->d_typename); 765 } 766 #endif 767 strncpy(lp->d_typename, wd->sc_params.atap_model, 16); 768 strncpy(lp->d_packname, "fictitious", 16); 769 lp->d_secperunit = wd->sc_capacity; 770 lp->d_rpm = 3600; 771 lp->d_interleave = 1; 772 lp->d_flags = 0; 773 774 lp->d_partitions[RAW_PART].p_offset = 0; 775 lp->d_partitions[RAW_PART].p_size = 776 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 777 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 778 lp->d_npartitions = RAW_PART + 1; 779 780 lp->d_magic = DISKMAGIC; 781 lp->d_magic2 = DISKMAGIC; 782 lp->d_checksum = dkcksum(lp); 783 } 784 785 /* 786 * Fabricate a default disk label, and try to read the correct one. 787 */ 788 void 789 wdgetdisklabel(wd) 790 struct wd_softc *wd; 791 { 792 struct disklabel *lp = wd->sc_dk.dk_label; 793 char *errstring; 794 795 WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); 796 797 memset(wd->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); 798 799 wdgetdefaultlabel(wd, lp); 800 801 wd->sc_badsect[0] = -1; 802 803 if (wd->drvp->state > RECAL) 804 wd->drvp->drive_flags |= DRIVE_RESET; 805 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, RAW_PART), 806 wdstrategy, lp, wd->sc_dk.dk_cpulabel); 807 if (errstring) { 808 /* 809 * This probably happened because the drive's default 810 * geometry doesn't match the DOS geometry. We 811 * assume the DOS geometry is now in the label and try 812 * again. XXX This is a kluge. 813 */ 814 if (wd->drvp->state > RECAL) 815 wd->drvp->drive_flags |= DRIVE_RESET; 816 errstring = readdisklabel(MAKEWDDEV(0, wd->sc_dev.dv_unit, 817 RAW_PART), wdstrategy, lp, wd->sc_dk.dk_cpulabel); 818 } 819 if (errstring) { 820 printf("%s: %s\n", wd->sc_dev.dv_xname, errstring); 821 return; 822 } 823 824 if (wd->drvp->state > RECAL) 825 wd->drvp->drive_flags |= DRIVE_RESET; 826 #ifdef HAS_BAD144_HANDLING 827 if ((lp->d_flags & D_BADSECT) != 0) 828 bad144intern(wd); 829 #endif 830 } 831 832 int 833 wdioctl(dev, xfer, addr, flag, p) 834 dev_t dev; 835 u_long xfer; 836 caddr_t addr; 837 int flag; 838 struct proc *p; 839 { 840 struct wd_softc *wd = wd_cd.cd_devs[WDUNIT(dev)]; 841 int error; 842 843 WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); 844 845 if ((wd->sc_flags & WDF_LOADED) == 0) 846 return EIO; 847 848 switch (xfer) { 849 #ifdef HAS_BAD144_HANDLING 850 case DIOCSBAD: 851 if ((flag & FWRITE) == 0) 852 return EBADF; 853 wd->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; 854 wd->sc_dk.dk_label->d_flags |= D_BADSECT; 855 bad144intern(wd); 856 return 0; 857 #endif 858 859 case DIOCGDINFO: 860 *(struct disklabel *)addr = *(wd->sc_dk.dk_label); 861 return 0; 862 863 case DIOCGPART: 864 ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; 865 ((struct partinfo *)addr)->part = 866 &wd->sc_dk.dk_label->d_partitions[WDPART(dev)]; 867 return 0; 868 869 case DIOCWDINFO: 870 case DIOCSDINFO: 871 if ((flag & FWRITE) == 0) 872 return EBADF; 873 874 if ((error = wdlock(wd)) != 0) 875 return error; 876 wd->sc_flags |= WDF_LABELLING; 877 878 error = setdisklabel(wd->sc_dk.dk_label, 879 (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0, 880 wd->sc_dk.dk_cpulabel); 881 if (error == 0) { 882 if (wd->drvp->state > RECAL) 883 wd->drvp->drive_flags |= DRIVE_RESET; 884 if (xfer == DIOCWDINFO) 885 error = writedisklabel(WDLABELDEV(dev), 886 wdstrategy, wd->sc_dk.dk_label, 887 wd->sc_dk.dk_cpulabel); 888 } 889 890 wd->sc_flags &= ~WDF_LABELLING; 891 wdunlock(wd); 892 return error; 893 894 case DIOCWLABEL: 895 if ((flag & FWRITE) == 0) 896 return EBADF; 897 if (*(int *)addr) 898 wd->sc_flags |= WDF_WLABEL; 899 else 900 wd->sc_flags &= ~WDF_WLABEL; 901 return 0; 902 903 case DIOCGDEFLABEL: 904 wdgetdefaultlabel(wd, (struct disklabel *)addr); 905 return 0; 906 907 #ifdef notyet 908 case DIOCWFORMAT: 909 if ((flag & FWRITE) == 0) 910 return EBADF; 911 { 912 register struct format_op *fop; 913 struct iovec aiov; 914 struct uio auio; 915 916 fop = (struct format_op *)addr; 917 aiov.iov_base = fop->df_buf; 918 aiov.iov_len = fop->df_count; 919 auio.uio_iov = &aiov; 920 auio.uio_iovcnt = 1; 921 auio.uio_resid = fop->df_count; 922 auio.uio_segflg = 0; 923 auio.uio_offset = 924 fop->df_startblk * wd->sc_dk.dk_label->d_secsize; 925 auio.uio_procp = p; 926 error = physio(wdformat, NULL, dev, B_WRITE, minphys, 927 &auio); 928 fop->df_count -= auio.uio_resid; 929 fop->df_reg[0] = wdc->sc_status; 930 fop->df_reg[1] = wdc->sc_error; 931 return error; 932 } 933 #endif 934 935 case ATAIOCCOMMAND: 936 /* 937 * Make sure this command is (relatively) safe first 938 */ 939 if ((((atareq_t *) addr)->flags & ATACMD_READ) == 0 && 940 (flag & FWRITE) == 0) 941 return (EBADF); 942 { 943 struct wd_ioctl *wi; 944 atareq_t *atareq = (atareq_t *) addr; 945 int error; 946 947 wi = wi_get(); 948 wi->wi_softc = wd; 949 wi->wi_atareq = *atareq; 950 951 if (atareq->datalen && atareq->flags & 952 (ATACMD_READ | ATACMD_WRITE)) { 953 wi->wi_iov.iov_base = atareq->databuf; 954 wi->wi_iov.iov_len = atareq->datalen; 955 wi->wi_uio.uio_iov = &wi->wi_iov; 956 wi->wi_uio.uio_iovcnt = 1; 957 wi->wi_uio.uio_resid = atareq->datalen; 958 wi->wi_uio.uio_offset = 0; 959 wi->wi_uio.uio_segflg = UIO_USERSPACE; 960 wi->wi_uio.uio_rw = 961 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE; 962 wi->wi_uio.uio_procp = p; 963 error = physio(wdioctlstrategy, &wi->wi_bp, dev, 964 (atareq->flags & ATACMD_READ) ? B_READ : B_WRITE, 965 minphys, &wi->wi_uio); 966 } else { 967 /* No need to call physio if we don't have any 968 user data */ 969 wi->wi_bp.b_flags = 0; 970 wi->wi_bp.b_data = 0; 971 wi->wi_bp.b_bcount = 0; 972 wi->wi_bp.b_dev = 0; 973 wi->wi_bp.b_proc = p; 974 wdioctlstrategy(&wi->wi_bp); 975 error = wi->wi_bp.b_error; 976 } 977 *atareq = wi->wi_atareq; 978 wi_free(wi); 979 return(error); 980 } 981 982 default: 983 return ENOTTY; 984 } 985 986 #ifdef DIAGNOSTIC 987 panic("wdioctl: impossible"); 988 #endif 989 } 990 991 #ifdef B_FORMAT 992 int 993 wdformat(struct buf *bp) 994 { 995 996 bp->b_flags |= B_FORMAT; 997 return wdstrategy(bp); 998 } 999 #endif 1000 1001 int 1002 wdsize(dev) 1003 dev_t dev; 1004 { 1005 struct wd_softc *wd; 1006 int part, unit, omask; 1007 int size; 1008 1009 WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); 1010 1011 unit = WDUNIT(dev); 1012 if (unit >= wd_cd.cd_ndevs) 1013 return (-1); 1014 wd = wd_cd.cd_devs[unit]; 1015 if (wd == NULL) 1016 return (-1); 1017 1018 part = WDPART(dev); 1019 omask = wd->sc_dk.dk_openmask & (1 << part); 1020 1021 if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) 1022 return (-1); 1023 if (wd->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1024 size = -1; 1025 else 1026 size = wd->sc_dk.dk_label->d_partitions[part].p_size * 1027 (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1028 if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) 1029 return (-1); 1030 return (size); 1031 } 1032 1033 #ifndef __BDEVSW_DUMP_OLD_TYPE 1034 /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ 1035 static int wddoingadump = 0; 1036 static int wddumprecalibrated = 0; 1037 static int wddumpmulti = 1; 1038 1039 /* 1040 * Dump core after a system crash. 1041 */ 1042 int 1043 wddump(dev, blkno, va, size) 1044 dev_t dev; 1045 daddr_t blkno; 1046 caddr_t va; 1047 size_t size; 1048 { 1049 struct wd_softc *wd; /* disk unit to do the I/O */ 1050 struct disklabel *lp; /* disk's disklabel */ 1051 int unit, part; 1052 int nblks; /* total number of sectors left to write */ 1053 int err; 1054 char errbuf[256]; 1055 1056 /* Check if recursive dump; if so, punt. */ 1057 if (wddoingadump) 1058 return EFAULT; 1059 wddoingadump = 1; 1060 1061 unit = WDUNIT(dev); 1062 if (unit >= wd_cd.cd_ndevs) 1063 return ENXIO; 1064 wd = wd_cd.cd_devs[unit]; 1065 if (wd == (struct wd_softc *)0) 1066 return ENXIO; 1067 1068 part = WDPART(dev); 1069 1070 /* Make sure it was initialized. */ 1071 if (wd->drvp->state < READY) 1072 return ENXIO; 1073 1074 /* Convert to disk sectors. Request must be a multiple of size. */ 1075 lp = wd->sc_dk.dk_label; 1076 if ((size % lp->d_secsize) != 0) 1077 return EFAULT; 1078 nblks = size / lp->d_secsize; 1079 blkno = blkno / (lp->d_secsize / DEV_BSIZE); 1080 1081 /* Check transfer bounds against partition size. */ 1082 if ((blkno < 0) || ((blkno + nblks) > lp->d_partitions[part].p_size)) 1083 return EINVAL; 1084 1085 /* Offset block number to start of partition. */ 1086 blkno += lp->d_partitions[part].p_offset; 1087 1088 /* Recalibrate, if first dump transfer. */ 1089 if (wddumprecalibrated == 0) { 1090 wddumpmulti = wd->sc_multi; 1091 wddumprecalibrated = 1; 1092 wd->drvp->state = RECAL; 1093 } 1094 1095 while (nblks > 0) { 1096 again: 1097 wd->sc_wdc_bio.blkno = blkno; 1098 wd->sc_wdc_bio.flags = ATA_POLL; 1099 if (wddumpmulti == 1) 1100 wd->sc_wdc_bio.flags |= ATA_SINGLE; 1101 if (wd->sc_flags & WDF_LBA) 1102 wd->sc_wdc_bio.flags |= ATA_LBA; 1103 wd->sc_wdc_bio.bcount = 1104 min(nblks, wddumpmulti) * lp->d_secsize; 1105 wd->sc_wdc_bio.databuf = va; 1106 #ifndef WD_DUMP_NOT_TRUSTED 1107 switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { 1108 case WDC_TRY_AGAIN: 1109 panic("wddump: try again"); 1110 break; 1111 case WDC_QUEUED: 1112 panic("wddump: polled command has been queued"); 1113 break; 1114 case WDC_COMPLETE: 1115 break; 1116 } 1117 switch(wd->sc_wdc_bio.error) { 1118 case TIMEOUT: 1119 printf("wddump: device timed out"); 1120 err = EIO; 1121 break; 1122 case ERR_DF: 1123 printf("wddump: drive fault"); 1124 err = EIO; 1125 break; 1126 case ERR_DMA: 1127 printf("wddump: DMA error"); 1128 err = EIO; 1129 break; 1130 case ERROR: 1131 errbuf[0] = '\0'; 1132 ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf); 1133 printf("wddump: %s", errbuf); 1134 err = EIO; 1135 break; 1136 case NOERROR: 1137 err = 0; 1138 break; 1139 default: 1140 panic("wddump: unknown error type"); 1141 } 1142 if (err != 0) { 1143 if (wddumpmulti != 1) { 1144 wddumpmulti = 1; /* retry in single-sector */ 1145 printf(", retrying\n"); 1146 goto again; 1147 } 1148 printf("\n"); 1149 return err; 1150 } 1151 #else /* WD_DUMP_NOT_TRUSTED */ 1152 /* Let's just talk about this first... */ 1153 printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", 1154 unit, va, cylin, head, sector); 1155 delay(500 * 1000); /* half a second */ 1156 #endif 1157 1158 /* update block count */ 1159 nblks -= min(nblks, wddumpmulti); 1160 blkno += min(nblks, wddumpmulti); 1161 va += min(nblks, wddumpmulti) * lp->d_secsize; 1162 } 1163 1164 wddoingadump = 0; 1165 return 0; 1166 } 1167 #else /* __BDEVSW_DUMP_NEW_TYPE */ 1168 1169 1170 int 1171 wddump(dev, blkno, va, size) 1172 dev_t dev; 1173 daddr_t blkno; 1174 caddr_t va; 1175 size_t size; 1176 { 1177 1178 /* Not implemented. */ 1179 return ENXIO; 1180 } 1181 #endif /* __BDEVSW_DUMP_NEW_TYPE */ 1182 1183 #ifdef HAS_BAD144_HANDLING 1184 /* 1185 * Internalize the bad sector table. 1186 */ 1187 void 1188 bad144intern(wd) 1189 struct wd_softc *wd; 1190 { 1191 struct dkbad *bt = &wd->sc_dk.dk_cpulabel->bad; 1192 struct disklabel *lp = wd->sc_dk.dk_label; 1193 int i = 0; 1194 1195 WDCDEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); 1196 1197 for (; i < NBT_BAD; i++) { 1198 if (bt->bt_bad[i].bt_cyl == 0xffff) 1199 break; 1200 wd->sc_badsect[i] = 1201 bt->bt_bad[i].bt_cyl * lp->d_secpercyl + 1202 (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + 1203 (bt->bt_bad[i].bt_trksec & 0xff); 1204 } 1205 for (; i < NBT_BAD+1; i++) 1206 wd->sc_badsect[i] = -1; 1207 } 1208 #endif 1209 1210 int 1211 wd_get_params(wd, flags, params) 1212 struct wd_softc *wd; 1213 u_int8_t flags; 1214 struct ataparams *params; 1215 { 1216 switch (ata_get_params(wd->drvp, flags, params)) { 1217 case CMD_AGAIN: 1218 return 1; 1219 case CMD_ERR: 1220 /* 1221 * We `know' there's a drive here; just assume it's old. 1222 * This geometry is only used to read the MBR and print a 1223 * (false) attach message. 1224 */ 1225 strncpy(params->atap_model, "ST506", 1226 sizeof params->atap_model); 1227 params->atap_config = ATA_CFG_FIXED; 1228 params->atap_cylinders = 1024; 1229 params->atap_heads = 8; 1230 params->atap_sectors = 17; 1231 params->atap_multi = 1; 1232 params->atap_capabilities1 = params->atap_capabilities2 = 0; 1233 wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ 1234 return 0; 1235 case CMD_OK: 1236 return 0; 1237 default: 1238 panic("wd_get_params: bad return code from ata_get_params"); 1239 /* NOTREACHED */ 1240 } 1241 } 1242 1243 void 1244 wd_flushcache(wd, flags) 1245 struct wd_softc *wd; 1246 int flags; 1247 { 1248 struct wdc_command wdc_c; 1249 1250 if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ 1251 return; 1252 memset(&wdc_c, 0, sizeof(struct wdc_command)); 1253 wdc_c.r_command = WDCC_FLUSHCACHE; 1254 wdc_c.r_st_bmask = WDCS_DRDY; 1255 wdc_c.r_st_pmask = WDCS_DRDY; 1256 wdc_c.flags = flags; 1257 wdc_c.timeout = 30000; /* 30s timeout */ 1258 if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { 1259 printf("%s: flush cache command didn't complete\n", 1260 wd->sc_dev.dv_xname); 1261 } 1262 if (wdc_c.flags & AT_TIMEOU) { 1263 printf("%s: flush cache command timeout\n", 1264 wd->sc_dev.dv_xname); 1265 } 1266 if (wdc_c.flags & AT_DF) { 1267 printf("%s: flush cache command: drive fault\n", 1268 wd->sc_dev.dv_xname); 1269 } 1270 /* 1271 * Ignore error register, it shouldn't report anything else 1272 * than COMMAND ABORTED, which means the device doesn't support 1273 * flush cache 1274 */ 1275 } 1276 1277 void 1278 wd_shutdown(arg) 1279 void *arg; 1280 { 1281 struct wd_softc *wd = arg; 1282 wd_flushcache(wd, AT_POLL); 1283 } 1284 1285 /* 1286 * Allocate space for a ioctl queue structure. Mostly taken from 1287 * scsipi_ioctl.c 1288 */ 1289 struct wd_ioctl * 1290 wi_get() 1291 { 1292 struct wd_ioctl *wi; 1293 int s; 1294 1295 wi = malloc(sizeof(struct wd_ioctl), M_TEMP, M_WAITOK); 1296 memset(wi, 0, sizeof (struct wd_ioctl)); 1297 s = splbio(); 1298 LIST_INSERT_HEAD(&wi_head, wi, wi_list); 1299 splx(s); 1300 return (wi); 1301 } 1302 1303 /* 1304 * Free an ioctl structure and remove it from our list 1305 */ 1306 1307 void 1308 wi_free(wi) 1309 struct wd_ioctl *wi; 1310 { 1311 int s; 1312 1313 s = splbio(); 1314 LIST_REMOVE(wi, wi_list); 1315 splx(s); 1316 free(wi, M_TEMP); 1317 } 1318 1319 /* 1320 * Find a wd_ioctl structure based on the struct buf. 1321 */ 1322 1323 struct wd_ioctl * 1324 wi_find(bp) 1325 struct buf *bp; 1326 { 1327 struct wd_ioctl *wi; 1328 int s; 1329 1330 s = splbio(); 1331 for (wi = wi_head.lh_first; wi != 0; wi = wi->wi_list.le_next) 1332 if (bp == &wi->wi_bp) 1333 break; 1334 splx(s); 1335 return (wi); 1336 } 1337 1338 /* 1339 * Ioctl pseudo strategy routine 1340 * 1341 * This is mostly stolen from scsipi_ioctl.c:scsistrategy(). What 1342 * happens here is: 1343 * 1344 * - wdioctl() queues a wd_ioctl structure. 1345 * 1346 * - wdioctl() calls physio/wdioctlstrategy based on whether or not 1347 * user space I/O is required. If physio() is called, physio() eventually 1348 * calls wdioctlstrategy(). 1349 * 1350 * - In either case, wdioctlstrategy() calls wdc_exec_command() 1351 * to perform the actual command 1352 * 1353 * The reason for the use of the pseudo strategy routine is because 1354 * when doing I/O to/from user space, physio _really_ wants to be in 1355 * the loop. We could put the entire buffer into the ioctl request 1356 * structure, but that won't scale if we want to do things like download 1357 * microcode. 1358 */ 1359 1360 void 1361 wdioctlstrategy(bp) 1362 struct buf *bp; 1363 { 1364 struct wd_ioctl *wi; 1365 struct wdc_command wdc_c; 1366 int error = 0; 1367 1368 wi = wi_find(bp); 1369 if (wi == NULL) { 1370 printf("user_strat: No ioctl\n"); 1371 error = EINVAL; 1372 goto bad; 1373 } 1374 1375 memset(&wdc_c, 0, sizeof(wdc_c)); 1376 1377 /* 1378 * Abort if physio broke up the transfer 1379 */ 1380 1381 if (bp->b_bcount != wi->wi_atareq.datalen) { 1382 printf("physio split wd ioctl request... cannot proceed\n"); 1383 error = EIO; 1384 goto bad; 1385 } 1386 1387 /* 1388 * Abort if we didn't get a buffer size that was a multiple of 1389 * our sector size (or was larger than NBBY) 1390 */ 1391 1392 if ((bp->b_bcount % wi->wi_softc->sc_dk.dk_label->d_secsize) != 0 || 1393 (bp->b_bcount / wi->wi_softc->sc_dk.dk_label->d_secsize) >= 1394 (1 << NBBY)) { 1395 error = EINVAL; 1396 goto bad; 1397 } 1398 1399 /* 1400 * Make sure a timeout was supplied in the ioctl request 1401 */ 1402 1403 if (wi->wi_atareq.timeout == 0) { 1404 error = EINVAL; 1405 goto bad; 1406 } 1407 1408 if (wi->wi_atareq.flags & ATACMD_READ) 1409 wdc_c.flags |= AT_READ; 1410 else if (wi->wi_atareq.flags & ATACMD_WRITE) 1411 wdc_c.flags |= AT_WRITE; 1412 1413 if (wi->wi_atareq.flags & ATACMD_READREG) 1414 wdc_c.flags |= AT_READREG; 1415 1416 wdc_c.flags |= AT_WAIT; 1417 1418 wdc_c.timeout = wi->wi_atareq.timeout; 1419 wdc_c.r_command = wi->wi_atareq.command; 1420 wdc_c.r_head = wi->wi_atareq.head & 0x0f; 1421 wdc_c.r_cyl = wi->wi_atareq.cylinder; 1422 wdc_c.r_sector = wi->wi_atareq.sec_num; 1423 wdc_c.r_count = wi->wi_atareq.sec_count; 1424 wdc_c.r_precomp = wi->wi_atareq.features; 1425 wdc_c.r_st_bmask = WDCS_DRDY; 1426 wdc_c.r_st_pmask = WDCS_DRDY; 1427 wdc_c.data = wi->wi_bp.b_data; 1428 wdc_c.bcount = wi->wi_bp.b_bcount; 1429 1430 if (wdc_exec_command(wi->wi_softc->drvp, &wdc_c) != WDC_COMPLETE) { 1431 wi->wi_atareq.retsts = ATACMD_ERROR; 1432 goto bad; 1433 } 1434 1435 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 1436 if (wdc_c.flags & AT_ERROR) { 1437 wi->wi_atareq.retsts = ATACMD_ERROR; 1438 wi->wi_atareq.error = wdc_c.r_error; 1439 } else if (wdc_c.flags & AT_DF) 1440 wi->wi_atareq.retsts = ATACMD_DF; 1441 else 1442 wi->wi_atareq.retsts = ATACMD_TIMEOUT; 1443 } else { 1444 wi->wi_atareq.retsts = ATACMD_OK; 1445 if (wi->wi_atareq.flags & ATACMD_READREG) { 1446 wi->wi_atareq.head = wdc_c.r_head ; 1447 wi->wi_atareq.cylinder = wdc_c.r_cyl; 1448 wi->wi_atareq.sec_num = wdc_c.r_sector; 1449 wi->wi_atareq.sec_count = wdc_c.r_count; 1450 wi->wi_atareq.features = wdc_c.r_precomp; 1451 wi->wi_atareq.error = wdc_c.r_error; 1452 } 1453 } 1454 1455 bp->b_error = 0; 1456 biodone(bp); 1457 return; 1458 bad: 1459 bp->b_flags |= B_ERROR; 1460 bp->b_error = error; 1461 biodone(bp); 1462 } 1463
Indexes created Thu Sep 25 16:09:42 GMT 2025