fd.c revision 1.7
1 /* $NetBSD: fd.c,v 1.7 1995/05/16 17:02:00 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 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 425 /* 426 * Got `invalid command'; we interpret it 427 * to mean that the re-calibrate hasn't in 428 * fact finished yet 429 */ 430 continue; 431 break; 432 } 433 } 434 n = fdc->sc_nstat; 435 #ifdef FD_DEBUG 436 if (fdc_debug) { 437 int i; 438 printf("fdprobe: %d stati:", n); 439 for (i = 0; i < n; i++) 440 printf(" %x", fdc->sc_status[i]); 441 printf("\n"); 442 } 443 #endif 444 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 445 return 0; 446 /* turn off motor */ 447 if (fdc->sc_flags & FDC_82077) { 448 /* select drive and turn on motor */ 449 *fdc->sc_reg_dor = FDO_FRST; 450 } else { 451 auxregbisc(0, AUXIO_FDS); 452 } 453 454 return 1; 455 } 456 457 /* 458 * Controller is working, and drive responded. Attach it. 459 */ 460 void 461 fdattach(parent, self, aux) 462 struct device *parent, *self; 463 void *aux; 464 { 465 struct fdc_softc *fdc = (void *)parent; 466 struct fd_softc *fd = (void *)self; 467 struct fdc_attach_args *fa = aux; 468 struct fd_type *type = fa->fa_deftype; 469 int drive = fa->fa_drive; 470 471 /* XXX Allow `flags' to override device type? */ 472 473 if (type) 474 printf(": %s %d cyl, %d head, %d sec\n", type->name, 475 type->tracks, type->heads, type->sectrac); 476 else 477 printf(": density unknown\n"); 478 479 fd->sc_cylin = -1; 480 fd->sc_drive = drive; 481 fd->sc_deftype = type; 482 fdc->sc_fd[drive] = fd; 483 fd->sc_dk.dk_driver = &fddkdriver; 484 #if 0 485 /* XXX Need to do some more fiddling with sc_dk. */ 486 /* XXX sparc's dk_establish is bogus */ 487 dk_establish(&fd->sc_dk, &fd->sc_dk.dk_dev); 488 #endif 489 } 490 491 inline struct fd_type * 492 fd_dev_to_type(fd, dev) 493 struct fd_softc *fd; 494 dev_t dev; 495 { 496 int type = FDTYPE(dev); 497 498 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 499 return NULL; 500 return type ? &fd_types[type - 1] : fd->sc_deftype; 501 } 502 503 void 504 fdstrategy(bp) 505 register struct buf *bp; /* IO operation to perform */ 506 { 507 struct fd_softc *fd; 508 int unit = FDUNIT(bp->b_dev); 509 int sz; 510 int s; 511 512 /* Valid unit, controller, and request? */ 513 if (unit >= fdcd.cd_ndevs || 514 (fd = fdcd.cd_devs[unit]) == 0 || 515 bp->b_blkno < 0 || 516 (bp->b_bcount % FDC_BSIZE) != 0) { 517 bp->b_error = EINVAL; 518 goto bad; 519 } 520 521 /* If it's a null transfer, return immediately. */ 522 if (bp->b_bcount == 0) 523 goto done; 524 525 sz = howmany(bp->b_bcount, FDC_BSIZE); 526 527 if (bp->b_blkno + sz > fd->sc_type->size) { 528 sz = fd->sc_type->size - bp->b_blkno; 529 if (sz == 0) { 530 /* If exactly at end of disk, return EOF. */ 531 bp->b_resid = bp->b_bcount; 532 goto done; 533 } 534 if (sz < 0) { 535 /* If past end of disk, return EINVAL. */ 536 bp->b_error = EINVAL; 537 goto bad; 538 } 539 /* Otherwise, truncate request. */ 540 bp->b_bcount = sz << DEV_BSHIFT; 541 } 542 543 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 544 545 #ifdef FD_DEBUG 546 if (fdc_debug > 1) 547 printf("fdstrategy: b_blkno %d b_bcount %d blkno %d cylin %d\n", 548 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 549 #endif 550 551 /* Queue transfer on drive, activate drive and controller if idle. */ 552 s = splbio(); 553 disksort(&fd->sc_q, bp); 554 untimeout(fd_motor_off, fd); /* a good idea */ 555 if (!fd->sc_q.b_active) 556 fdstart(fd); 557 #ifdef DIAGNOSTIC 558 else { 559 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 560 if (fdc->sc_state == DEVIDLE) { 561 printf("fdstrategy: controller inactive\n"); 562 fdcstart(fdc); 563 } 564 } 565 #endif 566 splx(s); 567 return; 568 569 bad: 570 bp->b_flags |= B_ERROR; 571 done: 572 /* Toss transfer; we're done early. */ 573 biodone(bp); 574 } 575 576 void 577 fdstart(fd) 578 struct fd_softc *fd; 579 { 580 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 581 int active = fdc->sc_drives.tqh_first != 0; 582 583 /* Link into controller queue. */ 584 fd->sc_q.b_active = 1; 585 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 586 587 /* If controller not already active, start it. */ 588 if (!active) 589 fdcstart(fdc); 590 } 591 592 void 593 fdfinish(fd, bp) 594 struct fd_softc *fd; 595 struct buf *bp; 596 { 597 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 598 599 /* 600 * Move this drive to the end of the queue to give others a `fair' 601 * chance. We only force a switch if N operations are completed while 602 * another drive is waiting to be serviced, since there is a long motor 603 * startup delay whenever we switch. 604 */ 605 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 606 fd->sc_ops = 0; 607 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 608 if (bp->b_actf) { 609 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 610 } else 611 fd->sc_q.b_active = 0; 612 } 613 bp->b_resid = fd->sc_bcount; 614 fd->sc_skip = 0; 615 fd->sc_q.b_actf = bp->b_actf; 616 biodone(bp); 617 /* turn off motor 5s from now */ 618 timeout(fd_motor_off, fd, 5 * hz); 619 fdc->sc_state = DEVIDLE; 620 } 621 622 void 623 fd_set_motor(fdc, reset) 624 struct fdc_softc *fdc; 625 int reset; 626 { 627 struct fd_softc *fd; 628 u_char status; 629 int n; 630 631 if (fdc->sc_flags & FDC_82077) { 632 if (fd = fdc->sc_drives.tqh_first) 633 status = fd->sc_drive; 634 else 635 status = 0; 636 if (!reset) 637 status |= FDO_FRST | FDO_FDMAEN; 638 for (n = 0; n < 4; n++) 639 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 640 status |= FDO_MOEN(n); 641 *fdc->sc_reg_dor = status; 642 } else { 643 int on = 0; 644 645 for (n = 0; n < 4; n++) 646 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 647 on = 1; 648 if (on) { 649 auxregbisc(AUXIO_FDS, 0); 650 } else { 651 auxregbisc(0, AUXIO_FDS); 652 } 653 delay(10); 654 if (reset) { 655 *fdc->sc_reg_drs = DRS_RESET; 656 delay(10); 657 *fdc->sc_reg_drs = 0; 658 #ifdef FD_DEBUG 659 if (fdc_debug) 660 printf("fdc reset\n"); 661 #endif 662 fdconf(fdc); 663 } 664 665 } 666 } 667 668 void 669 fd_motor_off(arg) 670 void *arg; 671 { 672 struct fd_softc *fd = arg; 673 int s; 674 675 s = splbio(); 676 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 677 fd_set_motor((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent, 0); 678 splx(s); 679 } 680 681 void 682 fd_motor_on(arg) 683 void *arg; 684 { 685 struct fd_softc *fd = arg; 686 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 687 int s; 688 689 s = splbio(); 690 fd->sc_flags &= ~FD_MOTOR_WAIT; 691 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 692 (void) fdcswintr(fdc); 693 splx(s); 694 } 695 696 int 697 fdcresult(fdc) 698 struct fdc_softc *fdc; 699 { 700 u_char i; 701 int j = 100000, 702 n = 0; 703 704 for (; j; j--) { 705 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 706 if (i == NE7_RQM) 707 return (fdc->sc_nstat = n); 708 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 709 if (n >= sizeof(fdc->sc_status)) { 710 log(LOG_ERR, "fdcresult: overrun\n"); 711 return -1; 712 } 713 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 714 } 715 } 716 log(LOG_ERR, "fdcresult: timeout\n"); 717 return (fdc->sc_nstat = -1); 718 } 719 720 int 721 out_fdc(fdc, x) 722 struct fdc_softc *fdc; 723 u_char x; 724 { 725 int i = 100000; 726 727 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0); 728 if (i <= 0) 729 return -1; 730 731 *fdc->sc_reg_fifo = x; 732 return 0; 733 } 734 735 int 736 Fdopen(dev, flags) 737 dev_t dev; 738 int flags; 739 { 740 int unit; 741 struct fd_softc *fd; 742 struct fd_type *type; 743 744 unit = FDUNIT(dev); 745 if (unit >= fdcd.cd_ndevs) 746 return ENXIO; 747 fd = fdcd.cd_devs[unit]; 748 if (fd == 0) 749 return ENXIO; 750 type = fd_dev_to_type(fd, dev); 751 if (type == NULL) 752 return ENXIO; 753 754 if ((fd->sc_flags & FD_OPEN) != 0 && 755 fd->sc_type != type) 756 return EBUSY; 757 758 fd->sc_type = type; 759 fd->sc_cylin = -1; 760 fd->sc_flags |= FD_OPEN; 761 762 return 0; 763 } 764 765 int 766 fdclose(dev, flags) 767 dev_t dev; 768 int flags; 769 { 770 struct fd_softc *fd = fdcd.cd_devs[FDUNIT(dev)]; 771 772 fd->sc_flags &= ~FD_OPEN; 773 return 0; 774 } 775 776 void 777 fdcstart(fdc) 778 struct fdc_softc *fdc; 779 { 780 781 #ifdef DIAGNOSTIC 782 /* only got here if controller's drive queue was inactive; should 783 be in idle state */ 784 if (fdc->sc_state != DEVIDLE) { 785 printf("fdcstart: not idle\n"); 786 return; 787 } 788 #endif 789 (void) fdcswintr(fdc); 790 } 791 792 void 793 fdcstatus(dv, n, s) 794 struct device *dv; 795 int n; 796 char *s; 797 { 798 struct fdc_softc *fdc = (void *)dv->dv_parent; 799 800 #if 0 801 /* 802 * A 82072 seems to return <invalid command> on 803 * gratuitous Sense Interrupt commands. 804 */ 805 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 806 out_fdc(fdc, NE7CMD_SENSEI); 807 (void) fdcresult(fdc); 808 n = 2; 809 } 810 #endif 811 812 /* Just print last status */ 813 n = fdc->sc_nstat; 814 815 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 816 817 switch (n) { 818 case 0: 819 printf("\n"); 820 break; 821 case 2: 822 printf(" (st0 %b cyl %d)\n", 823 fdc->sc_status[0], NE7_ST0BITS, 824 fdc->sc_status[1]); 825 break; 826 case 7: 827 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n", 828 fdc->sc_status[0], NE7_ST0BITS, 829 fdc->sc_status[1], NE7_ST1BITS, 830 fdc->sc_status[2], NE7_ST2BITS, 831 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 832 break; 833 #ifdef DIAGNOSTIC 834 default: 835 printf(" fdcstatus: weird size: %d\n", n); 836 break; 837 #endif 838 } 839 } 840 841 void 842 fdctimeout(arg) 843 void *arg; 844 { 845 struct fdc_softc *fdc = arg; 846 struct fd_softc *fd = fdc->sc_drives.tqh_first; 847 int s; 848 849 s = splbio(); 850 fdcstatus(&fd->sc_dk.dk_dev, 0, "timeout"); 851 852 if (fd->sc_q.b_actf) 853 fdc->sc_state++; 854 else 855 fdc->sc_state = DEVIDLE; 856 857 (void) fdcswintr(fdc); 858 splx(s); 859 } 860 861 void 862 fdcpseudointr(arg) 863 void *arg; 864 { 865 struct fdc_softc *fdc = arg; 866 int s; 867 868 /* Just ensure it has the right spl. */ 869 s = splbio(); 870 (void) fdcswintr(fdc); 871 splx(s); 872 } 873 874 875 #ifdef FDC_C_HANDLER 876 /* 877 * hardware interrupt entry point: must be converted to `fast' 878 * (in-window) handler. 879 */ 880 int 881 fdchwintr(fdc) 882 struct fdc_softc *fdc; 883 { 884 struct buf *bp; 885 int read; 886 887 switch (fdc->sc_istate) { 888 case ISTATE_SENSEI: 889 out_fdc(fdc, NE7CMD_SENSEI); 890 fdcresult(fdc); 891 fdc->sc_istate = ISTATE_IDLE; 892 ienab_bis(IE_FDSOFT); 893 return 1; 894 case ISTATE_IDLE: 895 case ISTATE_SPURIOUS: 896 auxregbisc(0, AUXIO_FDS); /* Does this help? */ 897 fdcresult(fdc); 898 fdc->sc_istate = ISTATE_SPURIOUS; 899 printf("fdc: stray hard interrupt... "); 900 ienab_bis(IE_FDSOFT); 901 return 1; 902 case ISTATE_DMA: 903 break; 904 default: 905 printf("fdc: goofed ...\n"); 906 return 1; 907 } 908 909 read = bp->b_flags & B_READ; 910 for (;;) { 911 register int msr; 912 913 msr = *fdc->sc_reg_msr; 914 915 if ((msr & NE7_RQM) == 0) 916 break; 917 918 if ((msr & NE7_NDM) == 0) { 919 fdcresult(fdc); 920 fdc->sc_istate = ISTATE_IDLE; 921 ienab_bis(IE_FDSOFT); 922 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 923 break; 924 } 925 926 if (msr & NE7_DIO) { 927 #ifdef DIAGNOSTIC 928 if (!read) 929 printf("fdxfer: false read\n"); 930 #endif 931 *fdc->sc_data++ = *fdc->sc_reg_fifo; 932 } else { 933 #ifdef DIAGNOSTIC 934 if (read) 935 printf("fdxfer: false write\n"); 936 #endif 937 *fdc->sc_reg_fifo = *fdc->sc_data++; 938 } 939 if (--fdc->sc_tc == 0) { 940 auxregbisc(AUXIO_FTC, 0); 941 fdc->sc_istate = ISTATE_IDLE; 942 delay(10); 943 auxregbisc(0, AUXIO_FTC); 944 fdcresult(fdc); 945 ienab_bis(IE_FDSOFT); 946 break; 947 } 948 } 949 return 1; 950 } 951 #endif 952 953 int 954 fdcswintr(fdc) 955 struct fdc_softc *fdc; 956 { 957 #define st0 fdc->sc_status[0] 958 #define st1 fdc->sc_status[1] 959 #define cyl fdc->sc_status[1] 960 #define OUT_FDC(fdc, c, s) \ 961 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 962 963 struct fd_softc *fd; 964 struct buf *bp; 965 int read, head, trac, sec, i, s, nblks; 966 struct fd_type *type; 967 968 loop: 969 if (fdc->sc_istate != ISTATE_IDLE) { 970 /* Trouble... */ 971 printf("fdc: spurious interrupt: istate=%d\n", fdc->sc_istate); 972 fdc->sc_istate = ISTATE_IDLE; 973 goto doreset; 974 } 975 976 /* Is there a drive for the controller to do a transfer with? */ 977 fd = fdc->sc_drives.tqh_first; 978 if (fd == NULL) { 979 fdc->sc_state = DEVIDLE; 980 return 0; 981 } 982 983 /* Is there a transfer to this drive? If not, deactivate drive. */ 984 bp = fd->sc_q.b_actf; 985 if (bp == NULL) { 986 fd->sc_ops = 0; 987 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 988 fd->sc_q.b_active = 0; 989 goto loop; 990 } 991 992 switch (fdc->sc_state) { 993 case DEVIDLE: 994 fdc->sc_errors = 0; 995 fd->sc_skip = 0; 996 fd->sc_bcount = bp->b_bcount; 997 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 998 untimeout(fd_motor_off, fd); 999 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1000 fdc->sc_state = MOTORWAIT; 1001 return 1; 1002 } 1003 if ((fd->sc_flags & FD_MOTOR) == 0) { 1004 /* Turn on the motor, being careful about pairing. */ 1005 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1006 if (ofd && ofd->sc_flags & FD_MOTOR) { 1007 untimeout(fd_motor_off, ofd); 1008 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1009 } 1010 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1011 fd_set_motor(fdc, 0); 1012 fdc->sc_state = MOTORWAIT; 1013 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1014 /* Allow .25s for motor to stabilize. */ 1015 timeout(fd_motor_on, fd, hz / 4); 1016 } else { 1017 fd->sc_flags &= ~FD_MOTOR_WAIT; 1018 goto loop; 1019 } 1020 return 1; 1021 } 1022 /* Make sure the right drive is selected. */ 1023 fd_set_motor(fdc, 0); 1024 1025 /* fall through */ 1026 case DOSEEK: 1027 doseek: 1028 if (fdc->sc_flags & FDC_EIS) { 1029 fd->sc_cylin = bp->b_cylin; 1030 /* We use implied seek */ 1031 goto doio; 1032 } 1033 1034 if (fd->sc_cylin == bp->b_cylin) 1035 goto doio; 1036 1037 /* specify command */ 1038 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1039 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1040 OUT_FDC(fdc, 6, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1041 1042 fdc->sc_istate = ISTATE_SENSEI; 1043 /* seek function */ 1044 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1045 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1046 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1047 1048 fd->sc_cylin = -1; 1049 fdc->sc_state = SEEKWAIT; 1050 fdc->sc_nstat = 0; 1051 timeout(fdctimeout, fdc, 4 * hz); 1052 return 1; 1053 1054 case DOIO: 1055 doio: 1056 type = fd->sc_type; 1057 sec = fd->sc_blkno % type->seccyl; 1058 nblks = type->seccyl - sec; 1059 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1060 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1061 fd->sc_nblks = nblks; 1062 fd->sc_nbytes = nblks * FDC_BSIZE; 1063 head = sec / type->sectrac; 1064 sec -= head * type->sectrac; 1065 #ifdef DIAGNOSTIC 1066 {int block; 1067 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1068 if (block != fd->sc_blkno) { 1069 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1070 #ifdef DDB 1071 Debugger(); 1072 #endif 1073 }} 1074 #endif 1075 read = bp->b_flags & B_READ; 1076 1077 /* Setup for pseudo DMA */ 1078 fdc->sc_data = bp->b_data + fd->sc_skip; 1079 fdc->sc_tc = fd->sc_nbytes; 1080 1081 *fdc->sc_reg_drs = type->rate; 1082 #ifdef FD_DEBUG 1083 if (fdc_debug > 1) 1084 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1085 read ? "read" : "write", fd->sc_drive, 1086 fd->sc_cylin, head, sec, nblks); 1087 #endif 1088 fdc->sc_state = IOCOMPLETE; 1089 fdc->sc_istate = ISTATE_DMA; 1090 fdc->sc_nstat = 0; 1091 if (read) 1092 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); /* READ */ 1093 else 1094 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); /* WRITE */ 1095 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1096 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /* track */ 1097 OUT_FDC(fdc, head, IOTIMEDOUT); 1098 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /* sector +1 */ 1099 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/* sector size */ 1100 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/* sectors/track */ 1101 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /* gap1 size */ 1102 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/* data length */ 1103 /* allow 2 seconds for operation */ 1104 timeout(fdctimeout, fdc, 2 * hz); 1105 return 1; /* will return later */ 1106 1107 case SEEKWAIT: 1108 untimeout(fdctimeout, fdc); 1109 fdc->sc_state = SEEKCOMPLETE; 1110 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1111 /* allow 1/50 second for heads to settle */ 1112 timeout(fdcpseudointr, fdc, hz / 50); 1113 return 1; /* will return later */ 1114 } 1115 1116 case SEEKCOMPLETE: 1117 /* Make sure seek really happened. */ 1118 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1119 cyl != bp->b_cylin * fd->sc_type->step) { 1120 #ifdef FD_DEBUG 1121 if (fdc_debug) 1122 fdcstatus(&fd->sc_dk.dk_dev, 2, "seek failed"); 1123 #endif 1124 fdcretry(fdc); 1125 goto loop; 1126 } 1127 fd->sc_cylin = bp->b_cylin; 1128 goto doio; 1129 1130 case IOTIMEDOUT: 1131 auxregbisc(AUXIO_FTC, 0); 1132 delay(10); 1133 auxregbisc(0, AUXIO_FTC); 1134 (void)fdcresult(fdc); 1135 case SEEKTIMEDOUT: 1136 case RECALTIMEDOUT: 1137 case RESETTIMEDOUT: 1138 fdcretry(fdc); 1139 goto loop; 1140 1141 case IOCOMPLETE: /* IO DONE, post-analyze */ 1142 untimeout(fdctimeout, fdc); 1143 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1144 #ifdef FD_DEBUG 1145 if (fdc_debug) { 1146 fdcstatus(&fd->sc_dk.dk_dev, 7, 1147 bp->b_flags & B_READ 1148 ? "read failed" : "write failed"); 1149 printf("blkno %d nblks %d tc %d\n", 1150 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1151 } 1152 #endif 1153 if (fdc->sc_nstat == 7 && 1154 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1155 1156 /* 1157 * Silently retry overruns if no other 1158 * error bit is set. Adjust threshold. 1159 */ 1160 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1161 if (thr < 15) { 1162 thr++; 1163 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1164 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1165 #ifdef FD_DEBUG 1166 if (fdc_debug) 1167 printf("fdc: %d -> threshold\n", thr); 1168 #endif 1169 fdconf(fdc); 1170 fdc->sc_state = DOIO; 1171 fdc->sc_overruns = 0; 1172 } 1173 if (++fdc->sc_overruns < 3) 1174 goto loop; 1175 } 1176 fdcretry(fdc); 1177 goto loop; 1178 } 1179 if (fdc->sc_errors) { 1180 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1181 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1182 printf("\n"); 1183 fdc->sc_errors = 0; 1184 } else { 1185 if (--fdc->sc_overruns < -5) { 1186 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1187 if (thr > 0) { 1188 thr--; 1189 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1190 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1191 #ifdef FD_DEBUG 1192 if (fdc_debug) 1193 printf("fdc: %d -> threshold\n", thr); 1194 #endif 1195 fdconf(fdc); 1196 } 1197 fdc->sc_overruns = 0; 1198 } 1199 } 1200 fd->sc_blkno += fd->sc_nblks; 1201 fd->sc_skip += fd->sc_nbytes; 1202 fd->sc_bcount -= fd->sc_nbytes; 1203 if (fd->sc_bcount > 0) { 1204 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1205 goto doseek; 1206 } 1207 fdfinish(fd, bp); 1208 goto loop; 1209 1210 case DORESET: 1211 doreset: 1212 /* try a reset, keep motor on */ 1213 fd_set_motor(fdc, 1); 1214 delay(100); 1215 fd_set_motor(fdc, 0); 1216 fdc->sc_state = RESETCOMPLETE; 1217 timeout(fdctimeout, fdc, hz / 2); 1218 return 1; /* will return later */ 1219 1220 case RESETCOMPLETE: 1221 untimeout(fdctimeout, fdc); 1222 /* clear the controller output buffer */ 1223 for (i = 0; i < 4; i++) { 1224 out_fdc(fdc, NE7CMD_SENSEI); 1225 (void) fdcresult(fdc); 1226 } 1227 1228 /* fall through */ 1229 case DORECAL: 1230 fdc->sc_state = RECALWAIT; 1231 fdc->sc_istate = ISTATE_SENSEI; 1232 fdc->sc_nstat = 0; 1233 /* recalibrate function */ 1234 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1235 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1236 timeout(fdctimeout, fdc, 5 * hz); 1237 return 1; /* will return later */ 1238 1239 case RECALWAIT: 1240 untimeout(fdctimeout, fdc); 1241 fdc->sc_state = RECALCOMPLETE; 1242 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1243 /* allow 1/30 second for heads to settle */ 1244 timeout(fdcpseudointr, fdc, hz / 30); 1245 return 1; /* will return later */ 1246 } 1247 1248 case RECALCOMPLETE: 1249 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1250 #ifdef FD_DEBUG 1251 if (fdc_debug) 1252 fdcstatus(&fd->sc_dk.dk_dev, 2, "recalibrate failed"); 1253 #endif 1254 fdcretry(fdc); 1255 goto loop; 1256 } 1257 fd->sc_cylin = 0; 1258 goto doseek; 1259 1260 case MOTORWAIT: 1261 if (fd->sc_flags & FD_MOTOR_WAIT) 1262 return 1; /* time's not up yet */ 1263 goto doseek; 1264 1265 default: 1266 fdcstatus(&fd->sc_dk.dk_dev, 0, "stray interrupt"); 1267 return 1; 1268 } 1269 #ifdef DIAGNOSTIC 1270 panic("fdcintr: impossible"); 1271 #endif 1272 #undef st0 1273 #undef st1 1274 #undef cyl 1275 } 1276 1277 void 1278 fdcretry(fdc) 1279 struct fdc_softc *fdc; 1280 { 1281 struct fd_softc *fd; 1282 struct buf *bp; 1283 1284 fd = fdc->sc_drives.tqh_first; 1285 bp = fd->sc_q.b_actf; 1286 1287 fdc->sc_overruns = 0; 1288 1289 switch (fdc->sc_errors) { 1290 case 0: 1291 /* try again */ 1292 fdc->sc_state = 1293 (fdc->sc_flags & FDC_EIS) ? DOIO : SEEKCOMPLETE; 1294 break; 1295 1296 case 1: case 2: case 3: 1297 /* didn't work; try recalibrating */ 1298 fdc->sc_state = DORECAL; 1299 break; 1300 1301 case 4: 1302 /* still no go; reset the bastard */ 1303 fdc->sc_state = DORESET; 1304 break; 1305 1306 default: 1307 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1308 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1309 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n", 1310 fdc->sc_status[0], NE7_ST0BITS, 1311 fdc->sc_status[1], NE7_ST1BITS, 1312 fdc->sc_status[2], NE7_ST2BITS, 1313 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1314 1315 bp->b_flags |= B_ERROR; 1316 bp->b_error = EIO; 1317 fdfinish(fd, bp); 1318 } 1319 fdc->sc_errors++; 1320 } 1321 1322 int 1323 fdsize(dev) 1324 dev_t dev; 1325 { 1326 1327 /* Swapping to floppies would not make sense. */ 1328 return -1; 1329 } 1330 1331 int 1332 fddump() 1333 { 1334 1335 /* Not implemented. */ 1336 return EINVAL; 1337 } 1338 1339 int 1340 fdioctl(dev, cmd, addr, flag) 1341 dev_t dev; 1342 u_long cmd; 1343 caddr_t addr; 1344 int flag; 1345 { 1346 struct fd_softc *fd = fdcd.cd_devs[FDUNIT(dev)]; 1347 struct disklabel buffer; 1348 int error; 1349 1350 switch (cmd) { 1351 case DIOCGDINFO: 1352 bzero(&buffer, sizeof(buffer)); 1353 1354 buffer.d_secpercyl = fd->sc_type->seccyl; 1355 buffer.d_type = DTYPE_FLOPPY; 1356 buffer.d_secsize = FDC_BSIZE; 1357 1358 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1359 return EINVAL; 1360 1361 *(struct disklabel *)addr = buffer; 1362 return 0; 1363 1364 case DIOCWLABEL: 1365 if ((flag & FWRITE) == 0) 1366 return EBADF; 1367 /* XXX do something */ 1368 return 0; 1369 1370 case DIOCWDINFO: 1371 if ((flag & FWRITE) == 0) 1372 return EBADF; 1373 1374 error = setdisklabel(&buffer, (struct disklabel *)addr, 0, NULL); 1375 if (error) 1376 return error; 1377 1378 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1379 return error; 1380 1381 case FDIOCEJECT: 1382 auxregbisc(AUXIO_FDS, AUXIO_FEJ); 1383 delay(10); 1384 auxregbisc(AUXIO_FEJ, AUXIO_FDS); 1385 return 0; 1386 #ifdef DEBUG 1387 case _IO('f', 100): 1388 { 1389 int i; 1390 struct fdc_softc *fdc = (struct fdc_softc *) 1391 fd->sc_dk.dk_dev.dv_parent; 1392 1393 out_fdc(fdc, NE7CMD_DUMPREG); 1394 fdcresult(fdc); 1395 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1396 for (i = 0; i < fdc->sc_nstat; i++) 1397 printf(" %x", fdc->sc_status[i]); 1398 printf(">\n"); 1399 } 1400 1401 return 0; 1402 case _IOW('f', 101, int): 1403 ((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent)->sc_cfg &= 1404 ~CFG_THRHLD_MASK; 1405 ((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent)->sc_cfg |= 1406 (*(int *)addr & CFG_THRHLD_MASK); 1407 fdconf(fd->sc_dk.dk_dev.dv_parent); 1408 return 0; 1409 case _IO('f', 102): 1410 { 1411 int i; 1412 struct fdc_softc *fdc = (struct fdc_softc *) 1413 fd->sc_dk.dk_dev.dv_parent; 1414 out_fdc(fdc, NE7CMD_SENSEI); 1415 fdcresult(fdc); 1416 printf("sensei(%d regs): <", fdc->sc_nstat); 1417 for (i=0; i< fdc->sc_nstat; i++) 1418 printf(" 0x%x", fdc->sc_status[i]); 1419 } 1420 printf(">\n"); 1421 return 0; 1422 #endif 1423 default: 1424 return ENOTTY; 1425 } 1426 1427 #ifdef DIAGNOSTIC 1428 panic("fdioctl: impossible"); 1429 #endif 1430 } 1431
Indexes created Fri Oct 03 02:09:57 GMT 2025