fd.c revision 1.6
1 /* $NetBSD: fd.c,v 1.6 1995/04/25 14:44:44 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles Hannum. 5 * Copyright (c) 1995 Paul Kranenburg. 6 * Copyright (c) 1990 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Don Ahn. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)fd.c 7.4 (Berkeley) 5/25/91 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/conf.h> 47 #include <sys/file.h> 48 #include <sys/ioctl.h> 49 #include <sys/device.h> 50 #include <sys/disklabel.h> 51 #include <sys/dkstat.h> 52 #include <sys/disk.h> 53 #include <sys/buf.h> 54 #include <sys/uio.h> 55 #include <sys/syslog.h> 56 #include <sys/queue.h> 57 58 #include <machine/cpu.h> 59 #include <machine/autoconf.h> 60 #include <sparc/sparc/auxreg.h> 61 #include <sparc/dev/fdreg.h> 62 #include <sparc/dev/fdvar.h> 63 64 #define FDUNIT(dev) (minor(dev) / 8) 65 #define FDTYPE(dev) (minor(dev) % 8) 66 67 #define b_cylin b_resid 68 69 #define FD_DEBUG 70 #ifdef FD_DEBUG 71 int fdc_debug = 0; 72 #endif 73 74 enum fdc_state { 75 DEVIDLE = 0, 76 MOTORWAIT, 77 DOSEEK, 78 SEEKWAIT, 79 SEEKTIMEDOUT, 80 SEEKCOMPLETE, 81 DOIO, 82 IOCOMPLETE, 83 IOTIMEDOUT, 84 DORESET, 85 RESETCOMPLETE, 86 RESETTIMEDOUT, 87 DORECAL, 88 RECALWAIT, 89 RECALTIMEDOUT, 90 RECALCOMPLETE, 91 }; 92 93 /* software state, per controller */ 94 struct fdc_softc { 95 struct dkdevice sc_dk; /* boilerplate */ 96 struct intrhand sc_sih; 97 struct intrhand sc_hih; 98 caddr_t sc_reg; 99 struct fd_softc *sc_fd[4]; /* pointers to children */ 100 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 101 enum fdc_state sc_state; 102 int sc_flags; 103 #define FDC_82077 0x01 104 #define FDC_NEEDHEADSETTLE 0x02 105 #define FDC_EIS 0x04 106 int sc_errors; /* number of retries so far */ 107 int sc_overruns; /* number of DMA overruns */ 108 int sc_cfg; /* current configuration */ 109 struct fdcio sc_io; 110 #define sc_reg_msr sc_io.fdcio_reg_msr 111 #define sc_reg_fifo sc_io.fdcio_reg_fifo 112 #define sc_reg_dor sc_io.fdcio_reg_dor 113 #define sc_reg_drs sc_io.fdcio_reg_msr 114 #define sc_istate sc_io.fdcio_istate 115 #define sc_data sc_io.fdcio_data 116 #define sc_tc sc_io.fdcio_tc 117 #define sc_nstat sc_io.fdcio_nstat 118 #define sc_status sc_io.fdcio_status 119 #define sc_intrcnt sc_io.fdcio_intrcnt 120 }; 121 122 #ifndef FDC_C_HANDLER 123 extern struct fdcio *fdciop; 124 #endif 125 126 /* controller driver configuration */ 127 int fdcmatch __P((struct device *, void *, void *)); 128 void fdcattach __P((struct device *, struct device *, void *)); 129 130 struct cfdriver fdccd = { 131 NULL, "fdc", fdcmatch, fdcattach, DV_DULL, sizeof(struct fdc_softc) 132 }; 133 134 /* 135 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 136 * we tell them apart. 137 */ 138 struct fd_type { 139 int sectrac; /* sectors per track */ 140 int heads; /* number of heads */ 141 int seccyl; /* sectors per cylinder */ 142 int secsize; /* size code for sectors */ 143 int datalen; /* data len when secsize = 0 */ 144 int steprate; /* step rate and head unload time */ 145 int gap1; /* gap len between sectors */ 146 int gap2; /* formatting gap */ 147 int tracks; /* total num of tracks */ 148 int size; /* size of disk in sectors */ 149 int step; /* steps per cylinder */ 150 int rate; /* transfer speed code */ 151 char *name; 152 }; 153 154 /* The order of entries in the following table is important -- BEWARE! */ 155 struct fd_type fd_types[] = { 156 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,"1.44MB" }, /* 1.44MB diskette */ 157 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,"1.2MB" }, /* 1.2 MB AT-diskettes */ 158 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,"360KB/AT" }, /* 360kB in 1.2MB drive */ 159 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,"360KB/PC" }, /* 360kB PC diskettes */ 160 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,"720KB" }, /* 3.5" 720kB diskette */ 161 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,"720KB/x" }, /* 720kB in 1.2MB drive */ 162 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,"360KB/x" }, /* 360kB in 720kB drive */ 163 }; 164 165 /* software state, per disk (with up to 4 disks per ctlr) */ 166 struct fd_softc { 167 struct dkdevice sc_dk; 168 169 struct fd_type *sc_deftype; /* default type descriptor */ 170 struct fd_type *sc_type; /* current type descriptor */ 171 172 daddr_t sc_blkno; /* starting block number */ 173 int sc_bcount; /* byte count left */ 174 int sc_skip; /* bytes already transferred */ 175 int sc_nblks; /* number of blocks currently tranferring */ 176 int sc_nbytes; /* number of bytes currently tranferring */ 177 178 int sc_drive; /* physical unit number */ 179 int sc_flags; 180 #define FD_OPEN 0x01 /* it's open */ 181 #define FD_MOTOR 0x02 /* motor should be on */ 182 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 183 int sc_cylin; /* where we think the head is */ 184 185 TAILQ_ENTRY(fd_softc) sc_drivechain; 186 int sc_ops; /* I/O ops since last switch */ 187 struct buf sc_q; /* head of buf chain */ 188 }; 189 190 /* floppy driver configuration */ 191 int fdmatch __P((struct device *, void *, void *)); 192 void fdattach __P((struct device *, struct device *, void *)); 193 194 struct cfdriver fdcd = { 195 NULL, "fd", fdmatch, fdattach, DV_DISK, sizeof(struct fd_softc) 196 }; 197 198 void fdgetdisklabel __P((struct fd_softc *)); 199 int fd_get_parms __P((struct fd_softc *)); 200 void fdstrategy __P((struct buf *)); 201 void fdstart __P((struct fd_softc *)); 202 203 struct dkdriver fddkdriver = { fdstrategy }; 204 205 struct fd_type *fd_nvtotype __P((char *, int, int)); 206 void fd_set_motor __P((struct fdc_softc *fdc, int reset)); 207 void fd_motor_off __P((void *arg)); 208 void fd_motor_on __P((void *arg)); 209 int fdcresult __P((struct fdc_softc *fdc)); 210 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 211 void fdcstart __P((struct fdc_softc *fdc)); 212 void fdcstatus __P((struct device *dv, int n, char *s)); 213 void fdctimeout __P((void *arg)); 214 void fdcpseudointr __P((void *arg)); 215 #ifdef FDC_C_HANDLER 216 int fdchwintr __P((struct fdc_softc *)); 217 #else 218 void fdchwintr __P((void)); 219 #endif 220 int fdcswintr __P((struct fdc_softc *)); 221 void fdcretry __P((struct fdc_softc *fdc)); 222 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 223 224 #if PIL_FDSOFT == 4 225 #define IE_FDSOFT IE_L4 226 #else 227 #error 4 228 #endif 229 230 int 231 fdcmatch(parent, match, aux) 232 struct device *parent; 233 void *match, *aux; 234 { 235 struct cfdata *cf = match; 236 register struct confargs *ca = aux; 237 register struct romaux *ra = &ca->ca_ra; 238 239 /* Sun PROMs call the controller an "fd" */ 240 if (strcmp("fd", ra->ra_name)) 241 return (0); 242 if (ca->ca_bustype == BUS_MAIN) { 243 if (ca->ca_ra.ra_vaddr && 244 probeget(ca->ca_ra.ra_vaddr, 1) == -1) { 245 return (0); 246 } 247 return (1); 248 } 249 250 return (0); 251 } 252 253 /* 254 * Arguments passed between fdcattach and fdprobe. 255 */ 256 struct fdc_attach_args { 257 int fa_drive; 258 struct fd_type *fa_deftype; 259 }; 260 261 /* 262 * Print the location of a disk drive (called just before attaching the 263 * the drive). If `fdc' is not NULL, the drive was found but was not 264 * in the system config file; print the drive name as well. 265 * Return QUIET (config_find ignores this if the device was configured) to 266 * avoid printing `fdN not configured' messages. 267 */ 268 int 269 fdprint(aux, fdc) 270 void *aux; 271 char *fdc; 272 { 273 register struct fdc_attach_args *fa = aux; 274 275 if (!fdc) 276 printf(" drive %d", fa->fa_drive); 277 return QUIET; 278 } 279 280 static void 281 fdconf(fdc) 282 struct fdc_softc *fdc; 283 { 284 int vroom; 285 286 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 287 return; 288 289 /* 290 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 291 * the PROM thinks is appropriate. 292 */ 293 if ((vroom = fdc->sc_status[7]) == 0) 294 vroom = 0x64; 295 296 /* Configure controller to use FIFO and Implied Seek */ 297 out_fdc(fdc, NE7CMD_CFG); 298 out_fdc(fdc, vroom); 299 out_fdc(fdc, fdc->sc_cfg); 300 out_fdc(fdc, 0); /* PRETRK */ 301 /* No result phase */ 302 } 303 304 void 305 fdcattach(parent, self, aux) 306 struct device *parent, *self; 307 void *aux; 308 { 309 register struct confargs *ca = aux; 310 struct fdc_softc *fdc = (void *)self; 311 struct fdc_attach_args fa; 312 int n, pri; 313 314 if (ca->ca_ra.ra_vaddr) 315 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 316 else 317 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_paddr, 318 ca->ca_ra.ra_len, 319 ca->ca_bustype); 320 321 if (cputyp == CPU_SUN4M) { 322 fdc->sc_reg_msr = &((struct fdreg_sun4m *)fdc->sc_reg)->fd_msr; 323 fdc->sc_reg_fifo = &((struct fdreg_sun4m *)fdc->sc_reg)->fd_fifo; 324 fdc->sc_reg_dor = &((struct fdreg_sun4m *)fdc->sc_reg)->fd_dor; 325 } else { 326 fdc->sc_reg_msr = &((struct fdreg_sun4c *)fdc->sc_reg)->fd_msr; 327 fdc->sc_reg_fifo = &((struct fdreg_sun4c *)fdc->sc_reg)->fd_fifo; 328 } 329 330 fdc->sc_state = DEVIDLE; 331 fdc->sc_istate = ISTATE_IDLE; 332 fdc->sc_flags |= FDC_EIS; 333 TAILQ_INIT(&fdc->sc_drives); 334 335 pri = ca->ca_ra.ra_intr[0].int_pri; 336 #ifdef FDC_C_HANDLER 337 fdc->sc_hih.ih_fun = (void *)fdchwintr; 338 fdc->sc_hih.ih_arg = fdc; 339 intr_establish(pri, &fdc->sc_hih); 340 #else 341 fdciop = &fdc->sc_io; 342 intr_fasttrap(pri, fdchwintr); 343 #endif 344 fdc->sc_sih.ih_fun = (void *)fdcswintr; 345 fdc->sc_sih.ih_arg = fdc; 346 intr_establish(PIL_FDSOFT, &fdc->sc_sih); 347 348 if (out_fdc(fdc, NE7CMD_VERSION)) { 349 printf(" misconfigured\n"); 350 return; 351 } 352 353 n = fdcresult(fdc); 354 if (n == 1 && fdc->sc_status[0] == 0x90) { 355 fdc->sc_flags |= FDC_82077; 356 if (cputyp != CPU_SUN4M) 357 printf(" Hmmm.. "); 358 } else { 359 /* Not a 82077 */ 360 if (cputyp != CPU_SUN4C) 361 printf(" Hmmm.. "); 362 } 363 364 /* 365 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 366 * Note: CFG_EFIFO is active-low, initial threshold value: 8 367 */ 368 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 369 fdconf(fdc); 370 371 if (fdc->sc_flags & FDC_82077) { 372 /* Lock configuration across soft resets. */ 373 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 374 if (fdcresult(fdc) != 1) 375 printf(" CFGLOCK: unexpected response"); 376 } 377 378 evcnt_attach(&fdc->sc_dk.dk_dev, "intr", &fdc->sc_intrcnt); 379 380 printf(" pri %d, softpri %d: chip %s\n", pri, PIL_FDSOFT, 381 (fdc->sc_flags & FDC_82077)?"82077":"82072"); 382 383 /* physical limit: four drives per controller. */ 384 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 385 fa.fa_deftype = NULL; /* unknown */ 386 fa.fa_deftype = &fd_types[0]; /* XXX */ 387 (void)config_found(self, (void *)&fa, fdprint); 388 } 389 } 390 391 int 392 fdmatch(parent, match, aux) 393 struct device *parent; 394 void *match, *aux; 395 { 396 struct fdc_softc *fdc = (void *)parent; 397 struct cfdata *cf = match; 398 struct fdc_attach_args *fa = aux; 399 int drive = fa->fa_drive; 400 int n; 401 402 if (fdc->sc_flags & FDC_82077) { 403 /* select drive and turn on motor */ 404 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 405 /* wait for motor to spin up */ 406 delay(250000); 407 } else { 408 if (drive > 0) 409 /* XXX - drive 0 always answers */ 410 return 0; 411 auxregbisc(AUXIO_FDS, 0); 412 } 413 fdc->sc_nstat = 0; 414 out_fdc(fdc, NE7CMD_RECAL); 415 out_fdc(fdc, drive); 416 /* wait for recalibrate */ 417 for (n = 0; n < 100000; n++) { 418 delay(10); 419 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 420 /* wait a bit longer till device *really* is ready */ 421 delay(100000); 422 if (out_fdc(fdc, NE7CMD_SENSEI)) 423 break; 424 fdcresult(fdc); 425 if (n == 1 && fdc->sc_status[0] == 0x80) 426 /* 427 * Got `invalid command'; we interpret it 428 * to mean that the re-calibrate hasn't in 429 * fact finished yet 430 */ 431 continue; 432 break; 433 } 434 } 435 n = fdc->sc_nstat; 436 #ifdef FD_DEBUG 437 if (fdc_debug) { 438 int i; 439 printf("fdprobe: %d stati:", n); 440 for (i = 0; i < n; i++) 441 printf(" %x", fdc->sc_status[i]); 442 printf("\n"); 443 } 444 #endif 445 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 446 return 0; 447 /* turn off motor */ 448 if (fdc->sc_flags & FDC_82077) { 449 /* select drive and turn on motor */ 450 *fdc->sc_reg_dor = FDO_FRST; 451 } else { 452 auxregbisc(0, AUXIO_FDS); 453 } 454 455 return 1; 456 } 457 458 /* 459 * Controller is working, and drive responded. Attach it. 460 */ 461 void 462 fdattach(parent, self, aux) 463 struct device *parent, *self; 464 void *aux; 465 { 466 struct fdc_softc *fdc = (void *)parent; 467 struct fd_softc *fd = (void *)self; 468 struct fdc_attach_args *fa = aux; 469 struct fd_type *type = fa->fa_deftype; 470 int drive = fa->fa_drive; 471 472 /* XXX Allow `flags' to override device type? */ 473 474 if (type) 475 printf(": %s %d cyl, %d head, %d sec\n", type->name, 476 type->tracks, type->heads, type->sectrac); 477 else 478 printf(": density unknown\n"); 479 480 fd->sc_cylin = -1; 481 fd->sc_drive = drive; 482 fd->sc_deftype = type; 483 fdc->sc_fd[drive] = fd; 484 fd->sc_dk.dk_driver = &fddkdriver; 485 #if 0 486 /* XXX Need to do some more fiddling with sc_dk. */ 487 /* XXX sparc's dk_establish is bogus */ 488 dk_establish(&fd->sc_dk, &fd->sc_dk.dk_dev); 489 #endif 490 } 491 492 inline struct fd_type * 493 fd_dev_to_type(fd, dev) 494 struct fd_softc *fd; 495 dev_t dev; 496 { 497 int type = FDTYPE(dev); 498 499 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 500 return NULL; 501 return type ? &fd_types[type - 1] : fd->sc_deftype; 502 } 503 504 void 505 fdstrategy(bp) 506 register struct buf *bp; /* IO operation to perform */ 507 { 508 struct fd_softc *fd; 509 int unit = FDUNIT(bp->b_dev); 510 int sz; 511 int s; 512 513 /* Valid unit, controller, and request? */ 514 if (unit >= fdcd.cd_ndevs || 515 (fd = fdcd.cd_devs[unit]) == 0 || 516 bp->b_blkno < 0 || 517 (bp->b_bcount % FDC_BSIZE) != 0) { 518 bp->b_error = EINVAL; 519 goto bad; 520 } 521 522 /* If it's a null transfer, return immediately. */ 523 if (bp->b_bcount == 0) 524 goto done; 525 526 sz = howmany(bp->b_bcount, FDC_BSIZE); 527 528 if (bp->b_blkno + sz > fd->sc_type->size) { 529 sz = fd->sc_type->size - bp->b_blkno; 530 if (sz == 0) { 531 /* If exactly at end of disk, return EOF. */ 532 bp->b_resid = bp->b_bcount; 533 goto done; 534 } 535 if (sz < 0) { 536 /* If past end of disk, return EINVAL. */ 537 bp->b_error = EINVAL; 538 goto bad; 539 } 540 /* Otherwise, truncate request. */ 541 bp->b_bcount = sz << DEV_BSHIFT; 542 } 543 544 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 545 546 #ifdef FD_DEBUG 547 if (fdc_debug > 1) 548 printf("fdstrategy: b_blkno %d b_bcount %d blkno %d cylin %d\n", 549 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 550 #endif 551 552 /* Queue transfer on drive, activate drive and controller if idle. */ 553 s = splbio(); 554 disksort(&fd->sc_q, bp); 555 untimeout(fd_motor_off, fd); /* a good idea */ 556 if (!fd->sc_q.b_active) 557 fdstart(fd); 558 #ifdef DIAGNOSTIC 559 else { 560 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 561 if (fdc->sc_state == DEVIDLE) { 562 printf("fdstrategy: controller inactive\n"); 563 fdcstart(fdc); 564 } 565 } 566 #endif 567 splx(s); 568 return; 569 570 bad: 571 bp->b_flags |= B_ERROR; 572 done: 573 /* Toss transfer; we're done early. */ 574 biodone(bp); 575 } 576 577 void 578 fdstart(fd) 579 struct fd_softc *fd; 580 { 581 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 582 int active = fdc->sc_drives.tqh_first != 0; 583 584 /* Link into controller queue. */ 585 fd->sc_q.b_active = 1; 586 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 587 588 /* If controller not already active, start it. */ 589 if (!active) 590 fdcstart(fdc); 591 } 592 593 void 594 fdfinish(fd, bp) 595 struct fd_softc *fd; 596 struct buf *bp; 597 { 598 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 599 600 /* 601 * Move this drive to the end of the queue to give others a `fair' 602 * chance. We only force a switch if N operations are completed while 603 * another drive is waiting to be serviced, since there is a long motor 604 * startup delay whenever we switch. 605 */ 606 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 607 fd->sc_ops = 0; 608 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 609 if (bp->b_actf) { 610 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 611 } else 612 fd->sc_q.b_active = 0; 613 } 614 bp->b_resid = fd->sc_bcount; 615 fd->sc_skip = 0; 616 fd->sc_q.b_actf = bp->b_actf; 617 biodone(bp); 618 /* turn off motor 5s from now */ 619 timeout(fd_motor_off, fd, 5 * hz); 620 fdc->sc_state = DEVIDLE; 621 } 622 623 void 624 fd_set_motor(fdc, reset) 625 struct fdc_softc *fdc; 626 int reset; 627 { 628 struct fd_softc *fd; 629 u_char status; 630 int n; 631 632 if (fdc->sc_flags & FDC_82077) { 633 if (fd = fdc->sc_drives.tqh_first) 634 status = fd->sc_drive; 635 else 636 status = 0; 637 if (!reset) 638 status |= FDO_FRST | FDO_FDMAEN; 639 for (n = 0; n < 4; n++) 640 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 641 status |= FDO_MOEN(n); 642 *fdc->sc_reg_dor = status; 643 } else { 644 int on = 0; 645 646 for (n = 0; n < 4; n++) 647 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 648 on = 1; 649 if (on) { 650 auxregbisc(AUXIO_FDS, 0); 651 } else { 652 auxregbisc(0, AUXIO_FDS); 653 } 654 delay(10); 655 if (reset) { 656 *fdc->sc_reg_drs = DRS_RESET; 657 delay(10); 658 *fdc->sc_reg_drs = 0; 659 #ifdef FD_DEBUG 660 if (fdc_debug) 661 printf("fdc reset\n"); 662 #endif 663 fdconf(fdc); 664 } 665 666 } 667 } 668 669 void 670 fd_motor_off(arg) 671 void *arg; 672 { 673 struct fd_softc *fd = arg; 674 int s; 675 676 s = splbio(); 677 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 678 fd_set_motor((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent, 0); 679 splx(s); 680 } 681 682 void 683 fd_motor_on(arg) 684 void *arg; 685 { 686 struct fd_softc *fd = arg; 687 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 688 int s; 689 690 s = splbio(); 691 fd->sc_flags &= ~FD_MOTOR_WAIT; 692 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 693 (void) fdcswintr(fdc); 694 splx(s); 695 } 696 697 int 698 fdcresult(fdc) 699 struct fdc_softc *fdc; 700 { 701 u_char i; 702 int j = 100000, 703 n = 0; 704 705 for (; j; j--) { 706 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 707 if (i == NE7_RQM) 708 return (fdc->sc_nstat = n); 709 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 710 if (n >= sizeof(fdc->sc_status)) { 711 log(LOG_ERR, "fdcresult: overrun\n"); 712 return -1; 713 } 714 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 715 } 716 } 717 log(LOG_ERR, "fdcresult: timeout\n"); 718 return (fdc->sc_nstat = -1); 719 } 720 721 int 722 out_fdc(fdc, x) 723 struct fdc_softc *fdc; 724 u_char x; 725 { 726 int i = 100000; 727 728 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0); 729 if (i <= 0) 730 return -1; 731 732 *fdc->sc_reg_fifo = x; 733 return 0; 734 } 735 736 int 737 Fdopen(dev, flags) 738 dev_t dev; 739 int flags; 740 { 741 int unit; 742 struct fd_softc *fd; 743 struct fd_type *type; 744 745 unit = FDUNIT(dev); 746 if (unit >= fdcd.cd_ndevs) 747 return ENXIO; 748 fd = fdcd.cd_devs[unit]; 749 if (fd == 0) 750 return ENXIO; 751 type = fd_dev_to_type(fd, dev); 752 if (type == NULL) 753 return ENXIO; 754 755 if ((fd->sc_flags & FD_OPEN) != 0 && 756 fd->sc_type != type) 757 return EBUSY; 758 759 fd->sc_type = type; 760 fd->sc_cylin = -1; 761 fd->sc_flags |= FD_OPEN; 762 763 return 0; 764 } 765 766 int 767 fdclose(dev, flags) 768 dev_t dev; 769 int flags; 770 { 771 struct fd_softc *fd = fdcd.cd_devs[FDUNIT(dev)]; 772 773 fd->sc_flags &= ~FD_OPEN; 774 return 0; 775 } 776 777 void 778 fdcstart(fdc) 779 struct fdc_softc *fdc; 780 { 781 782 #ifdef DIAGNOSTIC 783 /* only got here if controller's drive queue was inactive; should 784 be in idle state */ 785 if (fdc->sc_state != DEVIDLE) { 786 printf("fdcstart: not idle\n"); 787 return; 788 } 789 #endif 790 (void) fdcswintr(fdc); 791 } 792 793 void 794 fdcstatus(dv, n, s) 795 struct device *dv; 796 int n; 797 char *s; 798 { 799 struct fdc_softc *fdc = (void *)dv->dv_parent; 800 801 #if 0 802 /* 803 * A 82072 seems to return <invalid command> on 804 * gratuitous Sense Interrupt commands. 805 */ 806 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 807 out_fdc(fdc, NE7CMD_SENSEI); 808 (void) fdcresult(fdc); 809 n = 2; 810 } 811 #endif 812 813 /* Just print last status */ 814 n = fdc->sc_nstat; 815 816 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 817 818 switch (n) { 819 case 0: 820 printf("\n"); 821 break; 822 case 2: 823 printf(" (st0 %b cyl %d)\n", 824 fdc->sc_status[0], NE7_ST0BITS, 825 fdc->sc_status[1]); 826 break; 827 case 7: 828 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n", 829 fdc->sc_status[0], NE7_ST0BITS, 830 fdc->sc_status[1], NE7_ST1BITS, 831 fdc->sc_status[2], NE7_ST2BITS, 832 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 833 break; 834 #ifdef DIAGNOSTIC 835 default: 836 printf(" fdcstatus: weird size: %d\n", n); 837 break; 838 #endif 839 } 840 } 841 842 void 843 fdctimeout(arg) 844 void *arg; 845 { 846 struct fdc_softc *fdc = arg; 847 struct fd_softc *fd = fdc->sc_drives.tqh_first; 848 int s; 849 850 s = splbio(); 851 fdcstatus(&fd->sc_dk.dk_dev, 0, "timeout"); 852 853 if (fd->sc_q.b_actf) 854 fdc->sc_state++; 855 else 856 fdc->sc_state = DEVIDLE; 857 858 (void) fdcswintr(fdc); 859 splx(s); 860 } 861 862 void 863 fdcpseudointr(arg) 864 void *arg; 865 { 866 struct fdc_softc *fdc = arg; 867 int s; 868 869 /* Just ensure it has the right spl. */ 870 s = splbio(); 871 (void) fdcswintr(fdc); 872 splx(s); 873 } 874 875 876 #ifdef FDC_C_HANDLER 877 /* 878 * hardware interrupt entry point: must be converted to `fast' 879 * (in-window) handler. 880 */ 881 int 882 fdchwintr(fdc) 883 struct fdc_softc *fdc; 884 { 885 struct buf *bp; 886 int read; 887 888 switch (fdc->sc_istate) { 889 case ISTATE_SENSEI: 890 out_fdc(fdc, NE7CMD_SENSEI); 891 fdcresult(fdc); 892 fdc->sc_istate = ISTATE_IDLE; 893 ienab_bis(IE_FDSOFT); 894 return 1; 895 case ISTATE_IDLE: 896 case ISTATE_SPURIOUS: 897 auxregbisc(0, AUXIO_FDS); /* Does this help? */ 898 fdcresult(fdc); 899 fdc->sc_istate = ISTATE_SPURIOUS; 900 printf("fdc: stray hard interrupt... "); 901 ienab_bis(IE_FDSOFT); 902 return 1; 903 case ISTATE_DMA: 904 break; 905 default: 906 printf("fdc: goofed ...\n"); 907 return 1; 908 } 909 910 read = bp->b_flags & B_READ; 911 for (;;) { 912 register int msr; 913 914 msr = *fdc->sc_reg_msr; 915 916 if ((msr & NE7_RQM) == 0) 917 break; 918 919 if ((msr & NE7_NDM) == 0) { 920 fdcresult(fdc); 921 fdc->sc_istate = ISTATE_IDLE; 922 ienab_bis(IE_FDSOFT); 923 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 924 break; 925 } 926 927 if (msr & NE7_DIO) { 928 #ifdef DIAGNOSTIC 929 if (!read) 930 printf("fdxfer: false read\n"); 931 #endif 932 *fdc->sc_data++ = *fdc->sc_reg_fifo; 933 } else { 934 #ifdef DIAGNOSTIC 935 if (read) 936 printf("fdxfer: false write\n"); 937 #endif 938 *fdc->sc_reg_fifo = *fdc->sc_data++; 939 } 940 if (--fdc->sc_tc == 0) { 941 auxregbisc(AUXIO_FTC, 0); 942 fdc->sc_istate = ISTATE_IDLE; 943 delay(10); 944 auxregbisc(0, AUXIO_FTC); 945 fdcresult(fdc); 946 ienab_bis(IE_FDSOFT); 947 break; 948 } 949 } 950 return 1; 951 } 952 #endif 953 954 int 955 fdcswintr(fdc) 956 struct fdc_softc *fdc; 957 { 958 #define st0 fdc->sc_status[0] 959 #define st1 fdc->sc_status[1] 960 #define cyl fdc->sc_status[1] 961 #define OUT_FDC(fdc, c, s) \ 962 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 963 964 struct fd_softc *fd; 965 struct buf *bp; 966 int read, head, trac, sec, i, s, nblks; 967 struct fd_type *type; 968 969 loop: 970 if (fdc->sc_istate != ISTATE_IDLE) { 971 /* Trouble... */ 972 printf("fdc: spurious interrupt: istate=%d\n", fdc->sc_istate); 973 fdc->sc_istate = ISTATE_IDLE; 974 goto doreset; 975 } 976 977 /* Is there a drive for the controller to do a transfer with? */ 978 fd = fdc->sc_drives.tqh_first; 979 if (fd == NULL) { 980 fdc->sc_state = DEVIDLE; 981 return 0; 982 } 983 984 /* Is there a transfer to this drive? If not, deactivate drive. */ 985 bp = fd->sc_q.b_actf; 986 if (bp == NULL) { 987 fd->sc_ops = 0; 988 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 989 fd->sc_q.b_active = 0; 990 goto loop; 991 } 992 993 switch (fdc->sc_state) { 994 case DEVIDLE: 995 fdc->sc_errors = 0; 996 fd->sc_skip = 0; 997 fd->sc_bcount = bp->b_bcount; 998 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 999 untimeout(fd_motor_off, fd); 1000 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1001 fdc->sc_state = MOTORWAIT; 1002 return 1; 1003 } 1004 if ((fd->sc_flags & FD_MOTOR) == 0) { 1005 /* Turn on the motor, being careful about pairing. */ 1006 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1007 if (ofd && ofd->sc_flags & FD_MOTOR) { 1008 untimeout(fd_motor_off, ofd); 1009 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1010 } 1011 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1012 fd_set_motor(fdc, 0); 1013 fdc->sc_state = MOTORWAIT; 1014 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1015 /* Allow .25s for motor to stabilize. */ 1016 timeout(fd_motor_on, fd, hz / 4); 1017 } else { 1018 fd->sc_flags &= ~FD_MOTOR_WAIT; 1019 goto loop; 1020 } 1021 return 1; 1022 } 1023 /* Make sure the right drive is selected. */ 1024 fd_set_motor(fdc, 0); 1025 1026 /* fall through */ 1027 case DOSEEK: 1028 doseek: 1029 if (fdc->sc_flags & FDC_EIS) { 1030 fd->sc_cylin = bp->b_cylin; 1031 /* We use implied seek */ 1032 goto doio; 1033 } 1034 1035 if (fd->sc_cylin == bp->b_cylin) 1036 goto doio; 1037 1038 /* specify command */ 1039 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1040 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1041 OUT_FDC(fdc, 6, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1042 1043 fdc->sc_istate = ISTATE_SENSEI; 1044 /* seek function */ 1045 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1046 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1047 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1048 1049 fd->sc_cylin = -1; 1050 fdc->sc_state = SEEKWAIT; 1051 fdc->sc_nstat = 0; 1052 timeout(fdctimeout, fdc, 4 * hz); 1053 return 1; 1054 1055 case DOIO: 1056 doio: 1057 type = fd->sc_type; 1058 sec = fd->sc_blkno % type->seccyl; 1059 nblks = type->seccyl - sec; 1060 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1061 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1062 fd->sc_nblks = nblks; 1063 fd->sc_nbytes = nblks * FDC_BSIZE; 1064 head = sec / type->sectrac; 1065 sec -= head * type->sectrac; 1066 #ifdef DIAGNOSTIC 1067 {int block; 1068 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1069 if (block != fd->sc_blkno) { 1070 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1071 #ifdef DDB 1072 Debugger(); 1073 #endif 1074 }} 1075 #endif 1076 read = bp->b_flags & B_READ; 1077 1078 /* Setup for pseudo DMA */ 1079 fdc->sc_data = bp->b_data + fd->sc_skip; 1080 fdc->sc_tc = fd->sc_nbytes; 1081 1082 *fdc->sc_reg_drs = type->rate; 1083 #ifdef FD_DEBUG 1084 if (fdc_debug > 1) 1085 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1086 read ? "read" : "write", fd->sc_drive, 1087 fd->sc_cylin, head, sec, nblks); 1088 #endif 1089 fdc->sc_state = IOCOMPLETE; 1090 fdc->sc_istate = ISTATE_DMA; 1091 fdc->sc_nstat = 0; 1092 if (read) 1093 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); /* READ */ 1094 else 1095 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); /* WRITE */ 1096 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1097 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /* track */ 1098 OUT_FDC(fdc, head, IOTIMEDOUT); 1099 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /* sector +1 */ 1100 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/* sector size */ 1101 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/* sectors/track */ 1102 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /* gap1 size */ 1103 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/* data length */ 1104 /* allow 2 seconds for operation */ 1105 timeout(fdctimeout, fdc, 2 * hz); 1106 return 1; /* will return later */ 1107 1108 case SEEKWAIT: 1109 untimeout(fdctimeout, fdc); 1110 fdc->sc_state = SEEKCOMPLETE; 1111 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1112 /* allow 1/50 second for heads to settle */ 1113 timeout(fdcpseudointr, fdc, hz / 50); 1114 return 1; /* will return later */ 1115 } 1116 1117 case SEEKCOMPLETE: 1118 /* Make sure seek really happened. */ 1119 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1120 cyl != bp->b_cylin * fd->sc_type->step) { 1121 #ifdef FD_DEBUG 1122 if (fdc_debug) 1123 fdcstatus(&fd->sc_dk.dk_dev, 2, "seek failed"); 1124 #endif 1125 fdcretry(fdc); 1126 goto loop; 1127 } 1128 fd->sc_cylin = bp->b_cylin; 1129 goto doio; 1130 1131 case IOTIMEDOUT: 1132 auxregbisc(AUXIO_FTC, 0); 1133 delay(10); 1134 auxregbisc(0, AUXIO_FTC); 1135 (void)fdcresult(fdc); 1136 case SEEKTIMEDOUT: 1137 case RECALTIMEDOUT: 1138 case RESETTIMEDOUT: 1139 fdcretry(fdc); 1140 goto loop; 1141 1142 case IOCOMPLETE: /* IO DONE, post-analyze */ 1143 untimeout(fdctimeout, fdc); 1144 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1145 #ifdef FD_DEBUG 1146 if (fdc_debug) { 1147 fdcstatus(&fd->sc_dk.dk_dev, 7, 1148 bp->b_flags & B_READ 1149 ? "read failed" : "write failed"); 1150 printf("blkno %d nblks %d tc %d\n", 1151 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1152 } 1153 #endif 1154 if (fdc->sc_nstat == 7 && 1155 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1156 1157 /* 1158 * Silently retry overruns if no other 1159 * error bit is set. Adjust threshold. 1160 */ 1161 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1162 if (thr < 15) { 1163 thr++; 1164 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1165 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1166 #ifdef FD_DEBUG 1167 if (fdc_debug) 1168 printf("fdc: %d -> threshold\n", thr); 1169 #endif 1170 fdconf(fdc); 1171 fdc->sc_state = DOIO; 1172 fdc->sc_overruns = 0; 1173 } 1174 if (++fdc->sc_overruns < 3) 1175 goto loop; 1176 } 1177 fdcretry(fdc); 1178 goto loop; 1179 } 1180 if (fdc->sc_errors) { 1181 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1182 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1183 printf("\n"); 1184 fdc->sc_errors = 0; 1185 } else { 1186 if (--fdc->sc_overruns < -5) { 1187 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1188 if (thr > 0) { 1189 thr--; 1190 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1191 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1192 #ifdef FD_DEBUG 1193 if (fdc_debug) 1194 printf("fdc: %d -> threshold\n", thr); 1195 #endif 1196 fdconf(fdc); 1197 } 1198 fdc->sc_overruns = 0; 1199 } 1200 } 1201 fd->sc_blkno += fd->sc_nblks; 1202 fd->sc_skip += fd->sc_nbytes; 1203 fd->sc_bcount -= fd->sc_nbytes; 1204 if (fd->sc_bcount > 0) { 1205 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1206 goto doseek; 1207 } 1208 fdfinish(fd, bp); 1209 goto loop; 1210 1211 case DORESET: 1212 doreset: 1213 /* try a reset, keep motor on */ 1214 fd_set_motor(fdc, 1); 1215 delay(100); 1216 fd_set_motor(fdc, 0); 1217 fdc->sc_state = RESETCOMPLETE; 1218 timeout(fdctimeout, fdc, hz / 2); 1219 return 1; /* will return later */ 1220 1221 case RESETCOMPLETE: 1222 untimeout(fdctimeout, fdc); 1223 /* clear the controller output buffer */ 1224 for (i = 0; i < 4; i++) { 1225 out_fdc(fdc, NE7CMD_SENSEI); 1226 (void) fdcresult(fdc); 1227 } 1228 1229 /* fall through */ 1230 case DORECAL: 1231 fdc->sc_state = RECALWAIT; 1232 fdc->sc_istate = ISTATE_SENSEI; 1233 fdc->sc_nstat = 0; 1234 /* recalibrate function */ 1235 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1236 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1237 timeout(fdctimeout, fdc, 5 * hz); 1238 return 1; /* will return later */ 1239 1240 case RECALWAIT: 1241 untimeout(fdctimeout, fdc); 1242 fdc->sc_state = RECALCOMPLETE; 1243 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1244 /* allow 1/30 second for heads to settle */ 1245 timeout(fdcpseudointr, fdc, hz / 30); 1246 return 1; /* will return later */ 1247 } 1248 1249 case RECALCOMPLETE: 1250 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1251 #ifdef FD_DEBUG 1252 if (fdc_debug) 1253 fdcstatus(&fd->sc_dk.dk_dev, 2, "recalibrate failed"); 1254 #endif 1255 fdcretry(fdc); 1256 goto loop; 1257 } 1258 fd->sc_cylin = 0; 1259 goto doseek; 1260 1261 case MOTORWAIT: 1262 if (fd->sc_flags & FD_MOTOR_WAIT) 1263 return 1; /* time's not up yet */ 1264 goto doseek; 1265 1266 default: 1267 fdcstatus(&fd->sc_dk.dk_dev, 0, "stray interrupt"); 1268 return 1; 1269 } 1270 #ifdef DIAGNOSTIC 1271 panic("fdcintr: impossible"); 1272 #endif 1273 #undef st0 1274 #undef st1 1275 #undef cyl 1276 } 1277 1278 void 1279 fdcretry(fdc) 1280 struct fdc_softc *fdc; 1281 { 1282 struct fd_softc *fd; 1283 struct buf *bp; 1284 1285 fd = fdc->sc_drives.tqh_first; 1286 bp = fd->sc_q.b_actf; 1287 1288 fdc->sc_overruns = 0; 1289 1290 switch (fdc->sc_errors) { 1291 case 0: 1292 /* try again */ 1293 fdc->sc_state = 1294 (fdc->sc_flags & FDC_EIS) ? DOIO : SEEKCOMPLETE; 1295 break; 1296 1297 case 1: case 2: case 3: 1298 /* didn't work; try recalibrating */ 1299 fdc->sc_state = DORECAL; 1300 break; 1301 1302 case 4: 1303 /* still no go; reset the bastard */ 1304 fdc->sc_state = DORESET; 1305 break; 1306 1307 default: 1308 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1309 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1310 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n", 1311 fdc->sc_status[0], NE7_ST0BITS, 1312 fdc->sc_status[1], NE7_ST1BITS, 1313 fdc->sc_status[2], NE7_ST2BITS, 1314 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1315 1316 bp->b_flags |= B_ERROR; 1317 bp->b_error = EIO; 1318 fdfinish(fd, bp); 1319 } 1320 fdc->sc_errors++; 1321 } 1322 1323 int 1324 fdsize(dev) 1325 dev_t dev; 1326 { 1327 1328 /* Swapping to floppies would not make sense. */ 1329 return -1; 1330 } 1331 1332 int 1333 fddump() 1334 { 1335 1336 /* Not implemented. */ 1337 return EINVAL; 1338 } 1339 1340 int 1341 fdioctl(dev, cmd, addr, flag) 1342 dev_t dev; 1343 u_long cmd; 1344 caddr_t addr; 1345 int flag; 1346 { 1347 struct fd_softc *fd = fdcd.cd_devs[FDUNIT(dev)]; 1348 struct disklabel buffer; 1349 int error; 1350 1351 switch (cmd) { 1352 case DIOCGDINFO: 1353 bzero(&buffer, sizeof(buffer)); 1354 1355 buffer.d_secpercyl = fd->sc_type->seccyl; 1356 buffer.d_type = DTYPE_FLOPPY; 1357 buffer.d_secsize = FDC_BSIZE; 1358 1359 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1360 return EINVAL; 1361 1362 *(struct disklabel *)addr = buffer; 1363 return 0; 1364 1365 case DIOCWLABEL: 1366 if ((flag & FWRITE) == 0) 1367 return EBADF; 1368 /* XXX do something */ 1369 return 0; 1370 1371 case DIOCWDINFO: 1372 if ((flag & FWRITE) == 0) 1373 return EBADF; 1374 1375 error = setdisklabel(&buffer, (struct disklabel *)addr, 0, NULL); 1376 if (error) 1377 return error; 1378 1379 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1380 return error; 1381 1382 case FDIOCEJECT: 1383 auxregbisc(AUXIO_FDS, AUXIO_FEJ); 1384 delay(10); 1385 auxregbisc(AUXIO_FEJ, AUXIO_FDS); 1386 return 0; 1387 #ifdef DEBUG 1388 case _IO('f', 100): 1389 { 1390 int i; 1391 struct fdc_softc *fdc = (struct fdc_softc *) 1392 fd->sc_dk.dk_dev.dv_parent; 1393 1394 out_fdc(fdc, NE7CMD_DUMPREG); 1395 fdcresult(fdc); 1396 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1397 for (i = 0; i < fdc->sc_nstat; i++) 1398 printf(" %x", fdc->sc_status[i]); 1399 printf(">\n"); 1400 } 1401 1402 return 0; 1403 case _IOW('f', 101, int): 1404 ((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent)->sc_cfg &= 1405 ~CFG_THRHLD_MASK; 1406 ((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent)->sc_cfg |= 1407 (*(int *)addr & CFG_THRHLD_MASK); 1408 fdconf(fd->sc_dk.dk_dev.dv_parent); 1409 return 0; 1410 case _IO('f', 102): 1411 { 1412 int i; 1413 struct fdc_softc *fdc = (struct fdc_softc *) 1414 fd->sc_dk.dk_dev.dv_parent; 1415 out_fdc(fdc, NE7CMD_SENSEI); 1416 fdcresult(fdc); 1417 printf("sensei(%d regs): <", fdc->sc_nstat); 1418 for (i=0; i< fdc->sc_nstat; i++) 1419 printf(" 0x%x", fdc->sc_status[i]); 1420 } 1421 printf(">\n"); 1422 return 0; 1423 #endif 1424 default: 1425 return ENOTTY; 1426 } 1427 1428 #ifdef DIAGNOSTIC 1429 panic("fdioctl: impossible"); 1430 #endif 1431 } 1432
Indexes created Fri Oct 03 02:09:57 GMT 2025