fd.c revision 1.8
1 /* $NetBSD: fd.c,v 1.8 1995/05/20 20:03:37 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 char code; 314 315 if (ca->ca_ra.ra_vaddr) 316 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 317 else 318 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_paddr, 319 ca->ca_ra.ra_len, 320 ca->ca_bustype); 321 322 fdc->sc_state = DEVIDLE; 323 fdc->sc_istate = ISTATE_IDLE; 324 fdc->sc_flags |= FDC_EIS; 325 TAILQ_INIT(&fdc->sc_drives); 326 327 pri = ca->ca_ra.ra_intr[0].int_pri; 328 #ifdef FDC_C_HANDLER 329 fdc->sc_hih.ih_fun = (void *)fdchwintr; 330 fdc->sc_hih.ih_arg = fdc; 331 intr_establish(pri, &fdc->sc_hih); 332 #else 333 fdciop = &fdc->sc_io; 334 intr_fasttrap(pri, fdchwintr); 335 #endif 336 fdc->sc_sih.ih_fun = (void *)fdcswintr; 337 fdc->sc_sih.ih_arg = fdc; 338 intr_establish(PIL_FDSOFT, &fdc->sc_sih); 339 340 /* Assume a 82077 */ 341 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 342 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 343 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 344 345 code = '7'; 346 if (*fdc->sc_reg_dor == NE7_RQM) { 347 /* 348 * This hack from Chris Torek: apparently DOR really 349 * addresses MSR/DRS on a 82072. 350 * We used to rely on the VERSION command to tell the 351 * difference (which did not work). 352 */ 353 *fdc->sc_reg_dor = FDC_250KBPS; 354 if (*fdc->sc_reg_dor == NE7_RQM) 355 code = '2'; 356 } 357 if (code == '7') { 358 fdc->sc_flags |= FDC_82077; 359 } else { 360 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 361 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 362 fdc->sc_reg_dor = 0; 363 } 364 365 #ifdef FD_DEBUG 366 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 367 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 368 if (fdc_debug) 369 printf("[version cmd]"); 370 } 371 #endif 372 373 /* 374 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 375 * Note: CFG_EFIFO is active-low, initial threshold value: 8 376 */ 377 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 378 fdconf(fdc); 379 380 if (fdc->sc_flags & FDC_82077) { 381 /* Lock configuration across soft resets. */ 382 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 383 if (fdcresult(fdc) != 1) 384 printf(" CFGLOCK: unexpected response"); 385 } 386 387 evcnt_attach(&fdc->sc_dk.dk_dev, "intr", &fdc->sc_intrcnt); 388 389 printf(" pri %d, softpri %d: chip 8207%c\n", pri, PIL_FDSOFT, code); 390 391 /* physical limit: four drives per controller. */ 392 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 393 fa.fa_deftype = NULL; /* unknown */ 394 fa.fa_deftype = &fd_types[0]; /* XXX */ 395 (void)config_found(self, (void *)&fa, fdprint); 396 } 397 } 398 399 int 400 fdmatch(parent, match, aux) 401 struct device *parent; 402 void *match, *aux; 403 { 404 struct fdc_softc *fdc = (void *)parent; 405 struct cfdata *cf = match; 406 struct fdc_attach_args *fa = aux; 407 int drive = fa->fa_drive; 408 int n; 409 410 if (drive > 0) 411 /* XXX - for now, punt > 1 drives */ 412 return 0; 413 414 if (fdc->sc_flags & FDC_82077) { 415 /* select drive and turn on motor */ 416 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 417 /* wait for motor to spin up */ 418 delay(250000); 419 } else { 420 auxregbisc(AUXIO_FDS, 0); 421 } 422 fdc->sc_nstat = 0; 423 out_fdc(fdc, NE7CMD_RECAL); 424 out_fdc(fdc, drive); 425 /* wait for recalibrate */ 426 for (n = 0; n < 100000; n++) { 427 delay(10); 428 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 429 /* wait a bit longer till device *really* is ready */ 430 delay(100000); 431 if (out_fdc(fdc, NE7CMD_SENSEI)) 432 break; 433 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 434 /* 435 * Got `invalid command'; we interpret it 436 * to mean that the re-calibrate hasn't in 437 * fact finished yet 438 */ 439 continue; 440 break; 441 } 442 } 443 n = fdc->sc_nstat; 444 #ifdef FD_DEBUG 445 if (fdc_debug) { 446 int i; 447 printf("fdprobe: %d stati:", n); 448 for (i = 0; i < n; i++) 449 printf(" %x", fdc->sc_status[i]); 450 printf("\n"); 451 } 452 #endif 453 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 454 return 0; 455 /* turn off motor */ 456 if (fdc->sc_flags & FDC_82077) { 457 /* select drive and turn on motor */ 458 *fdc->sc_reg_dor = FDO_FRST; 459 } else { 460 auxregbisc(0, AUXIO_FDS); 461 } 462 463 return 1; 464 } 465 466 /* 467 * Controller is working, and drive responded. Attach it. 468 */ 469 void 470 fdattach(parent, self, aux) 471 struct device *parent, *self; 472 void *aux; 473 { 474 struct fdc_softc *fdc = (void *)parent; 475 struct fd_softc *fd = (void *)self; 476 struct fdc_attach_args *fa = aux; 477 struct fd_type *type = fa->fa_deftype; 478 int drive = fa->fa_drive; 479 480 /* XXX Allow `flags' to override device type? */ 481 482 if (type) 483 printf(": %s %d cyl, %d head, %d sec\n", type->name, 484 type->tracks, type->heads, type->sectrac); 485 else 486 printf(": density unknown\n"); 487 488 fd->sc_cylin = -1; 489 fd->sc_drive = drive; 490 fd->sc_deftype = type; 491 fdc->sc_fd[drive] = fd; 492 fd->sc_dk.dk_driver = &fddkdriver; 493 #if 0 494 /* XXX Need to do some more fiddling with sc_dk. */ 495 /* XXX sparc's dk_establish is bogus */ 496 dk_establish(&fd->sc_dk, &fd->sc_dk.dk_dev); 497 #endif 498 } 499 500 inline struct fd_type * 501 fd_dev_to_type(fd, dev) 502 struct fd_softc *fd; 503 dev_t dev; 504 { 505 int type = FDTYPE(dev); 506 507 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 508 return NULL; 509 return type ? &fd_types[type - 1] : fd->sc_deftype; 510 } 511 512 void 513 fdstrategy(bp) 514 register struct buf *bp; /* IO operation to perform */ 515 { 516 struct fd_softc *fd; 517 int unit = FDUNIT(bp->b_dev); 518 int sz; 519 int s; 520 521 /* Valid unit, controller, and request? */ 522 if (unit >= fdcd.cd_ndevs || 523 (fd = fdcd.cd_devs[unit]) == 0 || 524 bp->b_blkno < 0 || 525 (bp->b_bcount % FDC_BSIZE) != 0) { 526 bp->b_error = EINVAL; 527 goto bad; 528 } 529 530 /* If it's a null transfer, return immediately. */ 531 if (bp->b_bcount == 0) 532 goto done; 533 534 sz = howmany(bp->b_bcount, FDC_BSIZE); 535 536 if (bp->b_blkno + sz > fd->sc_type->size) { 537 sz = fd->sc_type->size - bp->b_blkno; 538 if (sz == 0) { 539 /* If exactly at end of disk, return EOF. */ 540 bp->b_resid = bp->b_bcount; 541 goto done; 542 } 543 if (sz < 0) { 544 /* If past end of disk, return EINVAL. */ 545 bp->b_error = EINVAL; 546 goto bad; 547 } 548 /* Otherwise, truncate request. */ 549 bp->b_bcount = sz << DEV_BSHIFT; 550 } 551 552 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 553 554 #ifdef FD_DEBUG 555 if (fdc_debug > 1) 556 printf("fdstrategy: b_blkno %d b_bcount %d blkno %d cylin %d\n", 557 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 558 #endif 559 560 /* Queue transfer on drive, activate drive and controller if idle. */ 561 s = splbio(); 562 disksort(&fd->sc_q, bp); 563 untimeout(fd_motor_off, fd); /* a good idea */ 564 if (!fd->sc_q.b_active) 565 fdstart(fd); 566 #ifdef DIAGNOSTIC 567 else { 568 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 569 if (fdc->sc_state == DEVIDLE) { 570 printf("fdstrategy: controller inactive\n"); 571 fdcstart(fdc); 572 } 573 } 574 #endif 575 splx(s); 576 return; 577 578 bad: 579 bp->b_flags |= B_ERROR; 580 done: 581 /* Toss transfer; we're done early. */ 582 biodone(bp); 583 } 584 585 void 586 fdstart(fd) 587 struct fd_softc *fd; 588 { 589 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 590 int active = fdc->sc_drives.tqh_first != 0; 591 592 /* Link into controller queue. */ 593 fd->sc_q.b_active = 1; 594 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 595 596 /* If controller not already active, start it. */ 597 if (!active) 598 fdcstart(fdc); 599 } 600 601 void 602 fdfinish(fd, bp) 603 struct fd_softc *fd; 604 struct buf *bp; 605 { 606 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 607 608 /* 609 * Move this drive to the end of the queue to give others a `fair' 610 * chance. We only force a switch if N operations are completed while 611 * another drive is waiting to be serviced, since there is a long motor 612 * startup delay whenever we switch. 613 */ 614 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 615 fd->sc_ops = 0; 616 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 617 if (bp->b_actf) { 618 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 619 } else 620 fd->sc_q.b_active = 0; 621 } 622 bp->b_resid = fd->sc_bcount; 623 fd->sc_skip = 0; 624 fd->sc_q.b_actf = bp->b_actf; 625 biodone(bp); 626 /* turn off motor 5s from now */ 627 timeout(fd_motor_off, fd, 5 * hz); 628 fdc->sc_state = DEVIDLE; 629 } 630 631 void 632 fd_set_motor(fdc, reset) 633 struct fdc_softc *fdc; 634 int reset; 635 { 636 struct fd_softc *fd; 637 u_char status; 638 int n; 639 640 if (fdc->sc_flags & FDC_82077) { 641 if (fd = fdc->sc_drives.tqh_first) 642 status = fd->sc_drive; 643 else 644 status = 0; 645 if (!reset) 646 status |= FDO_FRST | FDO_FDMAEN; 647 for (n = 0; n < 4; n++) 648 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 649 status |= FDO_MOEN(n); 650 *fdc->sc_reg_dor = status; 651 } else { 652 int on = 0; 653 654 for (n = 0; n < 4; n++) 655 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 656 on = 1; 657 if (on) { 658 auxregbisc(AUXIO_FDS, 0); 659 } else { 660 auxregbisc(0, AUXIO_FDS); 661 } 662 delay(10); 663 if (reset) { 664 *fdc->sc_reg_drs = DRS_RESET; 665 delay(10); 666 *fdc->sc_reg_drs = 0; 667 #ifdef FD_DEBUG 668 if (fdc_debug) 669 printf("fdc reset\n"); 670 #endif 671 fdconf(fdc); 672 } 673 674 } 675 } 676 677 void 678 fd_motor_off(arg) 679 void *arg; 680 { 681 struct fd_softc *fd = arg; 682 int s; 683 684 s = splbio(); 685 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 686 fd_set_motor((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent, 0); 687 splx(s); 688 } 689 690 void 691 fd_motor_on(arg) 692 void *arg; 693 { 694 struct fd_softc *fd = arg; 695 struct fdc_softc *fdc = (void *)fd->sc_dk.dk_dev.dv_parent; 696 int s; 697 698 s = splbio(); 699 fd->sc_flags &= ~FD_MOTOR_WAIT; 700 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 701 (void) fdcswintr(fdc); 702 splx(s); 703 } 704 705 int 706 fdcresult(fdc) 707 struct fdc_softc *fdc; 708 { 709 u_char i; 710 int j = 100000, 711 n = 0; 712 713 for (; j; j--) { 714 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 715 if (i == NE7_RQM) 716 return (fdc->sc_nstat = n); 717 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 718 if (n >= sizeof(fdc->sc_status)) { 719 log(LOG_ERR, "fdcresult: overrun\n"); 720 return -1; 721 } 722 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 723 } 724 } 725 log(LOG_ERR, "fdcresult: timeout\n"); 726 return (fdc->sc_nstat = -1); 727 } 728 729 int 730 out_fdc(fdc, x) 731 struct fdc_softc *fdc; 732 u_char x; 733 { 734 int i = 100000; 735 736 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0); 737 if (i <= 0) 738 return -1; 739 740 *fdc->sc_reg_fifo = x; 741 return 0; 742 } 743 744 int 745 Fdopen(dev, flags) 746 dev_t dev; 747 int flags; 748 { 749 int unit; 750 struct fd_softc *fd; 751 struct fd_type *type; 752 753 unit = FDUNIT(dev); 754 if (unit >= fdcd.cd_ndevs) 755 return ENXIO; 756 fd = fdcd.cd_devs[unit]; 757 if (fd == 0) 758 return ENXIO; 759 type = fd_dev_to_type(fd, dev); 760 if (type == NULL) 761 return ENXIO; 762 763 if ((fd->sc_flags & FD_OPEN) != 0 && 764 fd->sc_type != type) 765 return EBUSY; 766 767 fd->sc_type = type; 768 fd->sc_cylin = -1; 769 fd->sc_flags |= FD_OPEN; 770 771 return 0; 772 } 773 774 int 775 fdclose(dev, flags) 776 dev_t dev; 777 int flags; 778 { 779 struct fd_softc *fd = fdcd.cd_devs[FDUNIT(dev)]; 780 781 fd->sc_flags &= ~FD_OPEN; 782 return 0; 783 } 784 785 void 786 fdcstart(fdc) 787 struct fdc_softc *fdc; 788 { 789 790 #ifdef DIAGNOSTIC 791 /* only got here if controller's drive queue was inactive; should 792 be in idle state */ 793 if (fdc->sc_state != DEVIDLE) { 794 printf("fdcstart: not idle\n"); 795 return; 796 } 797 #endif 798 (void) fdcswintr(fdc); 799 } 800 801 void 802 fdcstatus(dv, n, s) 803 struct device *dv; 804 int n; 805 char *s; 806 { 807 struct fdc_softc *fdc = (void *)dv->dv_parent; 808 809 #if 0 810 /* 811 * A 82072 seems to return <invalid command> on 812 * gratuitous Sense Interrupt commands. 813 */ 814 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 815 out_fdc(fdc, NE7CMD_SENSEI); 816 (void) fdcresult(fdc); 817 n = 2; 818 } 819 #endif 820 821 /* Just print last status */ 822 n = fdc->sc_nstat; 823 824 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 825 826 switch (n) { 827 case 0: 828 printf("\n"); 829 break; 830 case 2: 831 printf(" (st0 %b cyl %d)\n", 832 fdc->sc_status[0], NE7_ST0BITS, 833 fdc->sc_status[1]); 834 break; 835 case 7: 836 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n", 837 fdc->sc_status[0], NE7_ST0BITS, 838 fdc->sc_status[1], NE7_ST1BITS, 839 fdc->sc_status[2], NE7_ST2BITS, 840 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 841 break; 842 #ifdef DIAGNOSTIC 843 default: 844 printf(" fdcstatus: weird size: %d\n", n); 845 break; 846 #endif 847 } 848 } 849 850 void 851 fdctimeout(arg) 852 void *arg; 853 { 854 struct fdc_softc *fdc = arg; 855 struct fd_softc *fd = fdc->sc_drives.tqh_first; 856 int s; 857 858 s = splbio(); 859 fdcstatus(&fd->sc_dk.dk_dev, 0, "timeout"); 860 861 if (fd->sc_q.b_actf) 862 fdc->sc_state++; 863 else 864 fdc->sc_state = DEVIDLE; 865 866 (void) fdcswintr(fdc); 867 splx(s); 868 } 869 870 void 871 fdcpseudointr(arg) 872 void *arg; 873 { 874 struct fdc_softc *fdc = arg; 875 int s; 876 877 /* Just ensure it has the right spl. */ 878 s = splbio(); 879 (void) fdcswintr(fdc); 880 splx(s); 881 } 882 883 884 #ifdef FDC_C_HANDLER 885 /* 886 * hardware interrupt entry point: must be converted to `fast' 887 * (in-window) handler. 888 */ 889 int 890 fdchwintr(fdc) 891 struct fdc_softc *fdc; 892 { 893 struct buf *bp; 894 int read; 895 896 switch (fdc->sc_istate) { 897 case ISTATE_SENSEI: 898 out_fdc(fdc, NE7CMD_SENSEI); 899 fdcresult(fdc); 900 fdc->sc_istate = ISTATE_IDLE; 901 ienab_bis(IE_FDSOFT); 902 return 1; 903 case ISTATE_IDLE: 904 case ISTATE_SPURIOUS: 905 auxregbisc(0, AUXIO_FDS); /* Does this help? */ 906 fdcresult(fdc); 907 fdc->sc_istate = ISTATE_SPURIOUS; 908 printf("fdc: stray hard interrupt... "); 909 ienab_bis(IE_FDSOFT); 910 return 1; 911 case ISTATE_DMA: 912 break; 913 default: 914 printf("fdc: goofed ...\n"); 915 return 1; 916 } 917 918 read = bp->b_flags & B_READ; 919 for (;;) { 920 register int msr; 921 922 msr = *fdc->sc_reg_msr; 923 924 if ((msr & NE7_RQM) == 0) 925 break; 926 927 if ((msr & NE7_NDM) == 0) { 928 fdcresult(fdc); 929 fdc->sc_istate = ISTATE_IDLE; 930 ienab_bis(IE_FDSOFT); 931 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 932 break; 933 } 934 935 if (msr & NE7_DIO) { 936 #ifdef DIAGNOSTIC 937 if (!read) 938 printf("fdxfer: false read\n"); 939 #endif 940 *fdc->sc_data++ = *fdc->sc_reg_fifo; 941 } else { 942 #ifdef DIAGNOSTIC 943 if (read) 944 printf("fdxfer: false write\n"); 945 #endif 946 *fdc->sc_reg_fifo = *fdc->sc_data++; 947 } 948 if (--fdc->sc_tc == 0) { 949 auxregbisc(AUXIO_FTC, 0); 950 fdc->sc_istate = ISTATE_IDLE; 951 delay(10); 952 auxregbisc(0, AUXIO_FTC); 953 fdcresult(fdc); 954 ienab_bis(IE_FDSOFT); 955 break; 956 } 957 } 958 return 1; 959 } 960 #endif 961 962 int 963 fdcswintr(fdc) 964 struct fdc_softc *fdc; 965 { 966 #define st0 fdc->sc_status[0] 967 #define st1 fdc->sc_status[1] 968 #define cyl fdc->sc_status[1] 969 #define OUT_FDC(fdc, c, s) \ 970 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 971 972 struct fd_softc *fd; 973 struct buf *bp; 974 int read, head, trac, sec, i, s, nblks; 975 struct fd_type *type; 976 977 loop: 978 if (fdc->sc_istate != ISTATE_IDLE) { 979 /* Trouble... */ 980 printf("fdc: spurious interrupt: istate=%d\n", fdc->sc_istate); 981 fdc->sc_istate = ISTATE_IDLE; 982 goto doreset; 983 } 984 985 /* Is there a drive for the controller to do a transfer with? */ 986 fd = fdc->sc_drives.tqh_first; 987 if (fd == NULL) { 988 fdc->sc_state = DEVIDLE; 989 return 0; 990 } 991 992 /* Is there a transfer to this drive? If not, deactivate drive. */ 993 bp = fd->sc_q.b_actf; 994 if (bp == NULL) { 995 fd->sc_ops = 0; 996 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 997 fd->sc_q.b_active = 0; 998 goto loop; 999 } 1000 1001 switch (fdc->sc_state) { 1002 case DEVIDLE: 1003 fdc->sc_errors = 0; 1004 fd->sc_skip = 0; 1005 fd->sc_bcount = bp->b_bcount; 1006 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1007 untimeout(fd_motor_off, fd); 1008 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1009 fdc->sc_state = MOTORWAIT; 1010 return 1; 1011 } 1012 if ((fd->sc_flags & FD_MOTOR) == 0) { 1013 /* Turn on the motor, being careful about pairing. */ 1014 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1015 if (ofd && ofd->sc_flags & FD_MOTOR) { 1016 untimeout(fd_motor_off, ofd); 1017 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1018 } 1019 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1020 fd_set_motor(fdc, 0); 1021 fdc->sc_state = MOTORWAIT; 1022 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1023 /* Allow .25s for motor to stabilize. */ 1024 timeout(fd_motor_on, fd, hz / 4); 1025 } else { 1026 fd->sc_flags &= ~FD_MOTOR_WAIT; 1027 goto loop; 1028 } 1029 return 1; 1030 } 1031 /* Make sure the right drive is selected. */ 1032 fd_set_motor(fdc, 0); 1033 1034 /* fall through */ 1035 case DOSEEK: 1036 doseek: 1037 if (fdc->sc_flags & FDC_EIS) { 1038 fd->sc_cylin = bp->b_cylin; 1039 /* We use implied seek */ 1040 goto doio; 1041 } 1042 1043 if (fd->sc_cylin == bp->b_cylin) 1044 goto doio; 1045 1046 /* specify command */ 1047 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1048 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1049 OUT_FDC(fdc, 6, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1050 1051 fdc->sc_istate = ISTATE_SENSEI; 1052 /* seek function */ 1053 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1054 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1055 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1056 1057 fd->sc_cylin = -1; 1058 fdc->sc_state = SEEKWAIT; 1059 fdc->sc_nstat = 0; 1060 timeout(fdctimeout, fdc, 4 * hz); 1061 return 1; 1062 1063 case DOIO: 1064 doio: 1065 type = fd->sc_type; 1066 sec = fd->sc_blkno % type->seccyl; 1067 nblks = type->seccyl - sec; 1068 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1069 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1070 fd->sc_nblks = nblks; 1071 fd->sc_nbytes = nblks * FDC_BSIZE; 1072 head = sec / type->sectrac; 1073 sec -= head * type->sectrac; 1074 #ifdef DIAGNOSTIC 1075 {int block; 1076 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1077 if (block != fd->sc_blkno) { 1078 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1079 #ifdef DDB 1080 Debugger(); 1081 #endif 1082 }} 1083 #endif 1084 read = bp->b_flags & B_READ; 1085 1086 /* Setup for pseudo DMA */ 1087 fdc->sc_data = bp->b_data + fd->sc_skip; 1088 fdc->sc_tc = fd->sc_nbytes; 1089 1090 *fdc->sc_reg_drs = type->rate; 1091 #ifdef FD_DEBUG 1092 if (fdc_debug > 1) 1093 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1094 read ? "read" : "write", fd->sc_drive, 1095 fd->sc_cylin, head, sec, nblks); 1096 #endif 1097 fdc->sc_state = IOCOMPLETE; 1098 fdc->sc_istate = ISTATE_DMA; 1099 fdc->sc_nstat = 0; 1100 if (read) 1101 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); /* READ */ 1102 else 1103 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); /* WRITE */ 1104 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1105 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /* track */ 1106 OUT_FDC(fdc, head, IOTIMEDOUT); 1107 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /* sector +1 */ 1108 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/* sector size */ 1109 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/* sectors/track */ 1110 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /* gap1 size */ 1111 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/* data length */ 1112 /* allow 2 seconds for operation */ 1113 timeout(fdctimeout, fdc, 2 * hz); 1114 return 1; /* will return later */ 1115 1116 case SEEKWAIT: 1117 untimeout(fdctimeout, fdc); 1118 fdc->sc_state = SEEKCOMPLETE; 1119 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1120 /* allow 1/50 second for heads to settle */ 1121 timeout(fdcpseudointr, fdc, hz / 50); 1122 return 1; /* will return later */ 1123 } 1124 1125 case SEEKCOMPLETE: 1126 /* Make sure seek really happened. */ 1127 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1128 cyl != bp->b_cylin * fd->sc_type->step) { 1129 #ifdef FD_DEBUG 1130 if (fdc_debug) 1131 fdcstatus(&fd->sc_dk.dk_dev, 2, "seek failed"); 1132 #endif 1133 fdcretry(fdc); 1134 goto loop; 1135 } 1136 fd->sc_cylin = bp->b_cylin; 1137 goto doio; 1138 1139 case IOTIMEDOUT: 1140 auxregbisc(AUXIO_FTC, 0); 1141 delay(10); 1142 auxregbisc(0, AUXIO_FTC); 1143 (void)fdcresult(fdc); 1144 case SEEKTIMEDOUT: 1145 case RECALTIMEDOUT: 1146 case RESETTIMEDOUT: 1147 fdcretry(fdc); 1148 goto loop; 1149 1150 case IOCOMPLETE: /* IO DONE, post-analyze */ 1151 untimeout(fdctimeout, fdc); 1152 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1153 #ifdef FD_DEBUG 1154 if (fdc_debug) { 1155 fdcstatus(&fd->sc_dk.dk_dev, 7, 1156 bp->b_flags & B_READ 1157 ? "read failed" : "write failed"); 1158 printf("blkno %d nblks %d tc %d\n", 1159 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1160 } 1161 #endif 1162 if (fdc->sc_nstat == 7 && 1163 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1164 1165 /* 1166 * Silently retry overruns if no other 1167 * error bit is set. Adjust threshold. 1168 */ 1169 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1170 if (thr < 15) { 1171 thr++; 1172 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1173 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1174 #ifdef FD_DEBUG 1175 if (fdc_debug) 1176 printf("fdc: %d -> threshold\n", thr); 1177 #endif 1178 fdconf(fdc); 1179 fdc->sc_state = DOIO; 1180 fdc->sc_overruns = 0; 1181 } 1182 if (++fdc->sc_overruns < 3) 1183 goto loop; 1184 } 1185 fdcretry(fdc); 1186 goto loop; 1187 } 1188 if (fdc->sc_errors) { 1189 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1190 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1191 printf("\n"); 1192 fdc->sc_errors = 0; 1193 } else { 1194 if (--fdc->sc_overruns < -5) { 1195 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1196 if (thr > 0) { 1197 thr--; 1198 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1199 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1200 #ifdef FD_DEBUG 1201 if (fdc_debug) 1202 printf("fdc: %d -> threshold\n", thr); 1203 #endif 1204 fdconf(fdc); 1205 } 1206 fdc->sc_overruns = 0; 1207 } 1208 } 1209 fd->sc_blkno += fd->sc_nblks; 1210 fd->sc_skip += fd->sc_nbytes; 1211 fd->sc_bcount -= fd->sc_nbytes; 1212 if (fd->sc_bcount > 0) { 1213 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1214 goto doseek; 1215 } 1216 fdfinish(fd, bp); 1217 goto loop; 1218 1219 case DORESET: 1220 doreset: 1221 /* try a reset, keep motor on */ 1222 fd_set_motor(fdc, 1); 1223 delay(100); 1224 fd_set_motor(fdc, 0); 1225 fdc->sc_state = RESETCOMPLETE; 1226 timeout(fdctimeout, fdc, hz / 2); 1227 return 1; /* will return later */ 1228 1229 case RESETCOMPLETE: 1230 untimeout(fdctimeout, fdc); 1231 /* clear the controller output buffer */ 1232 for (i = 0; i < 4; i++) { 1233 out_fdc(fdc, NE7CMD_SENSEI); 1234 (void) fdcresult(fdc); 1235 } 1236 1237 /* fall through */ 1238 case DORECAL: 1239 fdc->sc_state = RECALWAIT; 1240 fdc->sc_istate = ISTATE_SENSEI; 1241 fdc->sc_nstat = 0; 1242 /* recalibrate function */ 1243 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1244 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1245 timeout(fdctimeout, fdc, 5 * hz); 1246 return 1; /* will return later */ 1247 1248 case RECALWAIT: 1249 untimeout(fdctimeout, fdc); 1250 fdc->sc_state = RECALCOMPLETE; 1251 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1252 /* allow 1/30 second for heads to settle */ 1253 timeout(fdcpseudointr, fdc, hz / 30); 1254 return 1; /* will return later */ 1255 } 1256 1257 case RECALCOMPLETE: 1258 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1259 #ifdef FD_DEBUG 1260 if (fdc_debug) 1261 fdcstatus(&fd->sc_dk.dk_dev, 2, "recalibrate failed"); 1262 #endif 1263 fdcretry(fdc); 1264 goto loop; 1265 } 1266 fd->sc_cylin = 0; 1267 goto doseek; 1268 1269 case MOTORWAIT: 1270 if (fd->sc_flags & FD_MOTOR_WAIT) 1271 return 1; /* time's not up yet */ 1272 goto doseek; 1273 1274 default: 1275 fdcstatus(&fd->sc_dk.dk_dev, 0, "stray interrupt"); 1276 return 1; 1277 } 1278 #ifdef DIAGNOSTIC 1279 panic("fdcintr: impossible"); 1280 #endif 1281 #undef st0 1282 #undef st1 1283 #undef cyl 1284 } 1285 1286 void 1287 fdcretry(fdc) 1288 struct fdc_softc *fdc; 1289 { 1290 struct fd_softc *fd; 1291 struct buf *bp; 1292 1293 fd = fdc->sc_drives.tqh_first; 1294 bp = fd->sc_q.b_actf; 1295 1296 fdc->sc_overruns = 0; 1297 1298 switch (fdc->sc_errors) { 1299 case 0: 1300 /* try again */ 1301 fdc->sc_state = 1302 (fdc->sc_flags & FDC_EIS) ? DOIO : SEEKCOMPLETE; 1303 break; 1304 1305 case 1: case 2: case 3: 1306 /* didn't work; try recalibrating */ 1307 fdc->sc_state = DORECAL; 1308 break; 1309 1310 case 4: 1311 /* still no go; reset the bastard */ 1312 fdc->sc_state = DORESET; 1313 break; 1314 1315 default: 1316 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1317 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1318 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n", 1319 fdc->sc_status[0], NE7_ST0BITS, 1320 fdc->sc_status[1], NE7_ST1BITS, 1321 fdc->sc_status[2], NE7_ST2BITS, 1322 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1323 1324 bp->b_flags |= B_ERROR; 1325 bp->b_error = EIO; 1326 fdfinish(fd, bp); 1327 } 1328 fdc->sc_errors++; 1329 } 1330 1331 int 1332 fdsize(dev) 1333 dev_t dev; 1334 { 1335 1336 /* Swapping to floppies would not make sense. */ 1337 return -1; 1338 } 1339 1340 int 1341 fddump() 1342 { 1343 1344 /* Not implemented. */ 1345 return EINVAL; 1346 } 1347 1348 int 1349 fdioctl(dev, cmd, addr, flag) 1350 dev_t dev; 1351 u_long cmd; 1352 caddr_t addr; 1353 int flag; 1354 { 1355 struct fd_softc *fd = fdcd.cd_devs[FDUNIT(dev)]; 1356 struct disklabel buffer; 1357 int error; 1358 1359 switch (cmd) { 1360 case DIOCGDINFO: 1361 bzero(&buffer, sizeof(buffer)); 1362 1363 buffer.d_secpercyl = fd->sc_type->seccyl; 1364 buffer.d_type = DTYPE_FLOPPY; 1365 buffer.d_secsize = FDC_BSIZE; 1366 1367 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1368 return EINVAL; 1369 1370 *(struct disklabel *)addr = buffer; 1371 return 0; 1372 1373 case DIOCWLABEL: 1374 if ((flag & FWRITE) == 0) 1375 return EBADF; 1376 /* XXX do something */ 1377 return 0; 1378 1379 case DIOCWDINFO: 1380 if ((flag & FWRITE) == 0) 1381 return EBADF; 1382 1383 error = setdisklabel(&buffer, (struct disklabel *)addr, 0, NULL); 1384 if (error) 1385 return error; 1386 1387 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1388 return error; 1389 1390 case FDIOCEJECT: 1391 auxregbisc(AUXIO_FDS, AUXIO_FEJ); 1392 delay(10); 1393 auxregbisc(AUXIO_FEJ, AUXIO_FDS); 1394 return 0; 1395 #ifdef DEBUG 1396 case _IO('f', 100): 1397 { 1398 int i; 1399 struct fdc_softc *fdc = (struct fdc_softc *) 1400 fd->sc_dk.dk_dev.dv_parent; 1401 1402 out_fdc(fdc, NE7CMD_DUMPREG); 1403 fdcresult(fdc); 1404 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1405 for (i = 0; i < fdc->sc_nstat; i++) 1406 printf(" %x", fdc->sc_status[i]); 1407 printf(">\n"); 1408 } 1409 1410 return 0; 1411 case _IOW('f', 101, int): 1412 ((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent)->sc_cfg &= 1413 ~CFG_THRHLD_MASK; 1414 ((struct fdc_softc *)fd->sc_dk.dk_dev.dv_parent)->sc_cfg |= 1415 (*(int *)addr & CFG_THRHLD_MASK); 1416 fdconf(fd->sc_dk.dk_dev.dv_parent); 1417 return 0; 1418 case _IO('f', 102): 1419 { 1420 int i; 1421 struct fdc_softc *fdc = (struct fdc_softc *) 1422 fd->sc_dk.dk_dev.dv_parent; 1423 out_fdc(fdc, NE7CMD_SENSEI); 1424 fdcresult(fdc); 1425 printf("sensei(%d regs): <", fdc->sc_nstat); 1426 for (i=0; i< fdc->sc_nstat; i++) 1427 printf(" 0x%x", fdc->sc_status[i]); 1428 } 1429 printf(">\n"); 1430 return 0; 1431 #endif 1432 default: 1433 return ENOTTY; 1434 } 1435 1436 #ifdef DIAGNOSTIC 1437 panic("fdioctl: impossible"); 1438 #endif 1439 } 1440
Indexes created Fri Oct 03 02:09:57 GMT 2025