fd.c revision 1.6
1 /* $NetBSD: fd.c,v 1.6 1996/08/27 21:58:56 cgd Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles Hannum. 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Don Ahn. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)fd.c 7.4 (Berkeley) 5/25/91 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/conf.h> 46 #include <sys/file.h> 47 #include <sys/stat.h> 48 #include <sys/ioctl.h> 49 #include <sys/malloc.h> 50 #include <sys/device.h> 51 #include <sys/disklabel.h> 52 #include <sys/dkstat.h> 53 #include <sys/disk.h> 54 #include <sys/buf.h> 55 #include <sys/uio.h> 56 #include <sys/syslog.h> 57 #include <sys/queue.h> 58 59 #include <machine/cpu.h> 60 61 #include <x68k/x68k/iodevice.h> 62 #include <x68k/dev/dmavar.h> 63 #include <x68k/dev/fdreg.h> 64 #include <x68k/dev/opmreg.h> 65 66 #define infdc (IODEVbase->io_fdc) 67 68 #ifdef DEBUG 69 #define DPRINTF(x) if (fddebug) printf x 70 int fddebug = 0; 71 #else 72 #define DPRINTF(x) 73 #endif 74 75 #define FDUNIT(dev) (minor(dev) / 8) 76 #define FDTYPE(dev) (minor(dev) % 8) 77 78 #define b_cylin b_resid 79 80 enum fdc_state { 81 DEVIDLE = 0, 82 MOTORWAIT, 83 DOSEEK, 84 SEEKWAIT, 85 SEEKTIMEDOUT, 86 SEEKCOMPLETE, 87 DOIO, 88 IOCOMPLETE, 89 IOTIMEDOUT, 90 DORESET, 91 RESETCOMPLETE, 92 RESETTIMEDOUT, 93 DORECAL, 94 RECALWAIT, 95 RECALTIMEDOUT, 96 RECALCOMPLETE, 97 DOCOPY, 98 DOIOHALF, 99 COPYCOMPLETE, 100 }; 101 102 /* software state, per controller */ 103 struct fdc_softc { 104 struct device sc_dev; /* boilerplate */ 105 u_char sc_flags; 106 107 struct fd_softc *sc_fd[4]; /* pointers to children */ 108 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 109 enum fdc_state sc_state; 110 int sc_errors; /* number of retries so far */ 111 u_char sc_status[7]; /* copy of registers */ 112 } fdc_softc; 113 114 /* controller driver configuration */ 115 int fdcinit(); 116 void fdcstart(); 117 void fdcgo(); 118 int fdcintr (); 119 void fdcdone(); 120 void fdcreset(); 121 122 /* controller driver configuration */ 123 int fdcprobe __P((struct device *, void *, void *)); 124 void fdcattach __P((struct device *, struct device *, void *)); 125 126 struct cfattach fdc_ca = { 127 sizeof(struct fdc_softc), fdcprobe, fdcattach 128 }; 129 130 struct cfdriver fdc_cd = { 131 NULL, "fdc", DV_DULL 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 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS, "1.2MB/[1024bytes/sector]" }, /* 1.2 MB japanese format */ 157 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,"1.44MB" }, /* 1.44MB diskette */ 158 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS, "1.2MB" }, /* 1.2 MB AT-diskettes */ 159 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS, "360KB/AT" }, /* 360kB in 1.2MB drive */ 160 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS, "360KB/PC" }, /* 360kB PC diskettes */ 161 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS, "720KB" }, /* 3.5" 720kB diskette */ 162 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS, "720KB/x" }, /* 720kB in 1.2MB drive */ 163 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS, "360KB/x" }, /* 360kB in 720kB drive */ 164 }; 165 166 /* software state, per disk (with up to 4 disks per ctlr) */ 167 struct fd_softc { 168 struct device sc_dev; 169 struct disk sc_dk; 170 171 struct fd_type *sc_deftype; /* default type descriptor */ 172 struct fd_type *sc_type; /* current type descriptor */ 173 174 daddr_t sc_blkno; /* starting block number */ 175 int sc_bcount; /* byte count left */ 176 int sc_skip; /* bytes already transferred */ 177 int sc_nblks; /* number of blocks currently tranferring */ 178 int sc_nbytes; /* number of bytes currently tranferring */ 179 180 int sc_drive; /* physical unit number */ 181 int sc_flags; 182 #define FD_BOPEN 0x01 /* it's open */ 183 #define FD_COPEN 0x02 /* it's open */ 184 #define FD_OPEN (FD_BOPEN|FD_COPEN) /* it's open */ 185 #define FD_MOTOR 0x04 /* motor should be on */ 186 #define FD_MOTOR_WAIT 0x08 /* motor coming up */ 187 #define FD_ALIVE 0x10 /* alive */ 188 int sc_cylin; /* where we think the head is */ 189 190 TAILQ_ENTRY(fd_softc) sc_drivechain; 191 int sc_ops; /* I/O ops since last switch */ 192 struct buf sc_q; /* head of buf chain */ 193 u_char *sc_copybuf; /* for secsize >=3 */ 194 u_char sc_part; /* for secsize >=3 */ 195 #define SEC_P10 0x02 /* first part */ 196 #define SEC_P01 0x01 /* second part */ 197 #define SEC_P11 0x03 /* both part */ 198 }; 199 200 /* floppy driver configuration */ 201 int fdprobe __P((struct device *, void *, void *)); 202 void fdattach __P((struct device *, struct device *, void *)); 203 204 struct cfattach fd_ca = { 205 sizeof(struct fd_softc), fdprobe, fdattach 206 }; 207 208 struct cfdriver fd_cd = { 209 NULL, "fd", DV_DISK 210 }; 211 212 /* floppy driver configuration */ 213 void fdstart __P((struct fd_softc *fd)); 214 void fdgo(); 215 void fdintr(); 216 217 void fdstrategy __P((struct buf *)); 218 219 struct dkdriver fddkdriver = { fdstrategy }; 220 221 void fd_set_motor __P((struct fdc_softc *fdc, int reset)); 222 void fd_motor_off __P((void *arg)); 223 void fd_motor_on __P((void *arg)); 224 int fdcresult __P((struct fdc_softc *fdc)); 225 int out_fdc __P((u_char x)); 226 void fdcstart __P((struct fdc_softc *fdc)); 227 void fdcstatus __P((struct device *dv, int n, char *s)); 228 void fdctimeout __P((void *arg)); 229 void fdcpseudointr __P((void *arg)); 230 void fdcretry __P((struct fdc_softc *fdc)); 231 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 232 static int fdgetdisklabel __P((struct fd_softc *, dev_t)); 233 static void fd_do_eject __P((int)); 234 void fd_mountroot_hook __P((struct device *)); 235 236 #define FDDI_EN 0x02 237 #define FDCI_EN 0x04 238 #define FDD_INT 0x40 239 #define FDC_INT 0x80 240 241 #define DMA_BRD 0x01 242 #define DMA_BWR 0x02 243 244 #define DRQ 0 245 246 static u_char *fdc_dmabuf; 247 248 static inline void 249 fdc_dmastart(read, addr, count) 250 int read; 251 caddr_t addr; 252 int count; 253 { 254 volatile struct dmac *dmac = &IODEVbase->io_dma[DRQ]; 255 256 DPRINTF(("fdc_dmastart: (%s, addr = %p, count = %d\n", 257 read ? "read" : "write", addr, count)); 258 if (dmarangecheck((vm_offset_t)addr, count)) { 259 dma_bouncebytes[DRQ] = count; 260 dma_dataaddr[DRQ] = addr; 261 if (!(read)) { 262 bcopy(addr, dma_bouncebuf[DRQ], count); 263 dma_bounced[DRQ] = DMA_BWR; 264 } else { 265 dma_bounced[DRQ] = DMA_BRD; 266 } 267 addr = dma_bouncebuf[DRQ]; 268 } else { 269 dma_bounced[DRQ] = 0; 270 } 271 272 dmac->csr = 0xff; 273 dmac->ocr = read ? 0xb2 : 0x32; 274 dmac->mtc = (unsigned short)count; 275 asm("nop"); 276 asm("nop"); 277 dmac->mar = (unsigned long)kvtop(addr); 278 #if defined(M68040) 279 /* 280 * Push back dirty cache lines 281 */ 282 if (mmutype == MMU_68040) 283 DCFP(kvtop(addr)); 284 #endif 285 dmac->ccr = 0x88; 286 } 287 288 void 289 fdcdmaintr() 290 { 291 volatile struct dmac *dmac = &IODEVbase->io_dma[DRQ]; 292 dmac->csr = 0xff; 293 PCIA(); /* XXX? by oki */ 294 if (dma_bounced[DRQ] == DMA_BRD) { 295 bcopy(dma_bouncebuf[DRQ], dma_dataaddr[DRQ], dma_bouncebytes[DRQ]); 296 } 297 dma_bounced[DRQ] = 0; 298 } 299 300 void 301 fdcdmaerrintr() 302 { 303 volatile struct dmac *dmac = &IODEVbase->io_dma[DRQ]; 304 printf("fdcdmaerrintr: csr=%x, cer=%x\n", dmac->csr, dmac->cer); 305 dmac->csr = 0xff; 306 } 307 308 int 309 fdcprobe(parent, match, aux) 310 struct device *parent; 311 void *match, *aux; 312 { 313 if (strcmp("fdc", aux) != 0) 314 return 0; 315 return 1; 316 } 317 318 /* 319 * Arguments passed between fdcattach and fdprobe. 320 */ 321 struct fdc_attach_args { 322 int fa_drive; 323 struct fd_type *fa_deftype; 324 }; 325 326 /* 327 * Print the location of a disk drive (called just before attaching the 328 * the drive). If `fdc' is not NULL, the drive was found but was not 329 * in the system config file; print the drive name as well. 330 * Return QUIET (config_find ignores this if the device was configured) to 331 * avoid printing `fdN not configured' messages. 332 */ 333 int 334 fdprint(aux, fdc) 335 void *aux; 336 const char *fdc; 337 { 338 register struct fdc_attach_args *fa = aux; 339 340 if (!fdc) 341 printf(" drive %d", fa->fa_drive); 342 return QUIET; 343 } 344 345 void 346 fdcattach(parent, self, aux) 347 struct device *parent, *self; 348 void *aux; 349 { 350 struct fdc_softc *fdc = (void *)self; 351 volatile struct dmac *dmac = &IODEVbase->io_dma[DRQ]; 352 struct fdc_attach_args fa; 353 354 fdc->sc_state = DEVIDLE; 355 TAILQ_INIT(&fdc->sc_drives); 356 357 fdc->sc_flags = 0; 358 359 /* reset */ 360 ioctlr.intr &= (~FDDI_EN); 361 ioctlr.intr |= FDCI_EN; 362 fdcresult(fdc); 363 fdcreset(); 364 365 /* Initialize DMAC channel */ 366 dmac->dcr = 0x80; 367 dmac->scr = 0x04; 368 dmac->csr = 0xff; 369 dmac->cpr = 0x00; 370 dmac->dar = (unsigned long) kvtop((void *)&infdc.data); 371 dmac->mfc = 0x05; 372 dmac->dfc = 0x05; 373 dmac->bfc = 0x05; 374 dmac->niv = 0x64; 375 dmac->eiv = 0x65; 376 377 printf(": uPD72065 FDC\n"); 378 out_fdc(NE7CMD_SPECIFY);/* specify command */ 379 out_fdc(0xd0); 380 out_fdc(0x10); 381 382 fdc_dmabuf = (u_char *)malloc(NBPG, M_DEVBUF, M_WAITOK); 383 if (fdc_dmabuf == 0) 384 printf("fdcinit: WARNING!! malloc() failed.\n"); 385 dma_bouncebuf[DRQ] = fdc_dmabuf; 386 387 /* physical limit: four drives per controller. */ 388 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 389 (void)config_found(self, (void *)&fa, fdprint); 390 } 391 } 392 393 void 394 fdcreset() 395 { 396 infdc.stat = FDC_RESET; 397 } 398 399 static int 400 fdcpoll(fdc) 401 struct fdc_softc *fdc; 402 { 403 int i = 25000; 404 while (--i > 0) { 405 if ((ioctlr.intr & 0x80)) { 406 out_fdc(NE7CMD_SENSEI); 407 fdcresult(fdc); 408 break; 409 } 410 DELAY(100); 411 } 412 return i; 413 } 414 415 int 416 fdprobe(parent, match, aux) 417 struct device *parent; 418 void *match, *aux; 419 { 420 struct fdc_softc *fdc = (void *)parent; 421 struct cfdata *cf = match; 422 struct fd_type *type; 423 int drive = cf->cf_unit; 424 int n; 425 int found = 0; 426 int i; 427 428 if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != drive) 429 return 0; 430 431 type = &fd_types[0]; /* XXX 1.2MB */ 432 433 ioctlr.intr &= (~FDCI_EN); 434 435 /* select drive and turn on motor */ 436 infdc.select = 0x80 | (type->rate << 4)| drive; 437 fdc_force_ready(FDCRDY); 438 fdcpoll(fdc); 439 440 retry: 441 out_fdc(NE7CMD_RECAL); 442 out_fdc(drive); 443 444 i = 25000; 445 while (--i > 0) { 446 if ((ioctlr.intr & 0x80)) { 447 out_fdc(NE7CMD_SENSEI); 448 n = fdcresult(fdc); 449 break; 450 } 451 DELAY(100); 452 } 453 454 #ifdef FDDEBUG 455 { 456 int i; 457 printf("fdprobe: status"); 458 for (i = 0; i < n; i++) 459 printf(" %x", fdc->sc_status[i]); 460 printf("\n"); 461 } 462 #endif 463 464 if (n == 2) { 465 if ((fdc->sc_status[0] & 0xf0) == 0x20) { 466 found = 1; 467 } else if ((fdc->sc_status[0] & 0xf0) == 0xc0) { 468 goto retry; 469 } 470 } 471 472 /* turn off motor */ 473 infdc.select = (type->rate << 4)| drive; 474 fdc_force_ready(FDCSTBY); 475 if (!found) { 476 ioctlr.intr |= FDCI_EN; 477 return 0; 478 } 479 480 return 1; 481 } 482 483 void 484 fdattach(parent, self, aux) 485 struct device *parent; 486 struct device *self; 487 void *aux; 488 { 489 struct fdc_softc *fdc = (void *)parent; 490 register struct fd_softc *fd = (void *)self; 491 struct fdc_attach_args *fa = aux; 492 int drive = fa->fa_drive; 493 struct fd_type *type = &fd_types[0]; /* XXX 1.2MB */ 494 495 fd->sc_flags = 0; 496 497 ioctlr.intr |= FDCI_EN; 498 499 if (type) 500 printf(": %s %d cyl, %d head, %d sec\n", type->name, 501 type->tracks, type->heads, type->sectrac); 502 else 503 printf(": density unknown\n"); 504 505 fd->sc_cylin = -1; 506 fd->sc_drive = drive; 507 fd->sc_deftype = type; 508 fdc->sc_fd[drive] = fd; 509 510 fd->sc_copybuf = (u_char *)malloc(NBPG, M_DEVBUF, M_WAITOK); 511 if (fd->sc_copybuf == 0) 512 printf("fdprobe: WARNING!! malloc() failed.\n"); 513 fd->sc_flags |= FD_ALIVE; 514 515 /* 516 * Initialize and attach the disk structure. 517 */ 518 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 519 fd->sc_dk.dk_driver = &fddkdriver; 520 disk_attach(&fd->sc_dk); 521 522 /* 523 * Establish a mountroot_hook anyway in case we booted 524 * with RB_ASKNAME and get selected as the boot device. 525 */ 526 mountroot_hook_establish(fd_mountroot_hook, &fd->sc_dev); 527 } 528 529 inline struct fd_type * 530 fd_dev_to_type(fd, dev) 531 struct fd_softc *fd; 532 dev_t dev; 533 { 534 int type = FDTYPE(dev); 535 536 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 537 return NULL; 538 return &fd_types[type]; 539 } 540 541 void 542 fdstrategy(bp) 543 register struct buf *bp; /* IO operation to perform */ 544 { 545 struct fd_softc *fd; 546 int unit = FDUNIT(bp->b_dev); 547 int sz; 548 int s; 549 550 if (unit >= fd_cd.cd_ndevs || 551 (fd = fd_cd.cd_devs[unit]) == 0 || 552 bp->b_blkno < 0 || 553 (bp->b_bcount % FDC_BSIZE) != 0) { 554 #ifdef FDDEBUG 555 printf("fdstrategy: unit=%d, blkno=%d, bcount=%d\n", unit, 556 bp->b_blkno, bp->b_bcount); 557 #endif 558 bp->b_error = EINVAL; 559 goto bad; 560 } 561 562 /* If it's a null transfer, return immediately. */ 563 if (bp->b_bcount == 0) 564 goto done; 565 566 sz = howmany(bp->b_bcount, FDC_BSIZE); 567 568 if (bp->b_blkno + sz > (fd->sc_type->size << (fd->sc_type->secsize - 2))) { 569 sz = (fd->sc_type->size << (fd->sc_type->secsize - 2)) - bp->b_blkno; 570 if (sz == 0) { 571 /* If exactly at end of disk, return EOF. */ 572 bp->b_resid = bp->b_bcount; 573 goto done; 574 } 575 if (sz < 0) { 576 /* If past end of disk, return EINVAL. */ 577 bp->b_error = EINVAL; 578 goto bad; 579 } 580 /* Otherwise, truncate request. */ 581 bp->b_bcount = sz << DEV_BSHIFT; 582 } 583 584 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) 585 / (fd->sc_type->seccyl * (1 << (fd->sc_type->secsize - 2))); 586 587 DPRINTF(("fdstrategy: %s b_blkno %d b_bcount %ld cylin %ld\n", 588 bp->b_flags & B_READ ? "read" : "write", 589 bp->b_blkno, bp->b_bcount, bp->b_cylin)); 590 /* Queue transfer on drive, activate drive and controller if idle. */ 591 s = splbio(); 592 disksort(&fd->sc_q, bp); 593 untimeout(fd_motor_off, fd); /* a good idea */ 594 if (!fd->sc_q.b_active) 595 fdstart(fd); 596 #ifdef DIAGNOSTIC 597 else { 598 struct fdc_softc *fdc = fdc_cd.cd_devs[0]; /* XXX */ 599 if (fdc->sc_state == DEVIDLE) { 600 printf("fdstrategy: controller inactive\n"); 601 fdcstart(fdc); 602 } 603 } 604 #endif 605 splx(s); 606 return; 607 608 bad: 609 bp->b_flags |= B_ERROR; 610 done: 611 /* Toss transfer; we're done early. */ 612 biodone(bp); 613 } 614 615 void 616 fdstart(fd) 617 struct fd_softc *fd; 618 { 619 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 620 int active = fdc->sc_drives.tqh_first != 0; 621 622 /* Link into controller queue. */ 623 fd->sc_q.b_active = 1; 624 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 625 626 /* If controller not already active, start it. */ 627 if (!active) 628 fdcstart(fdc); 629 } 630 631 void 632 fdfinish(fd, bp) 633 struct fd_softc *fd; 634 struct buf *bp; 635 { 636 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 637 638 /* 639 * Move this drive to the end of the queue to give others a `fair' 640 * chance. We only force a switch if N operations are completed while 641 * another drive is waiting to be serviced, since there is a long motor 642 * startup delay whenever we switch. 643 */ 644 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 645 fd->sc_ops = 0; 646 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 647 if (bp->b_actf) { 648 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 649 } else 650 fd->sc_q.b_active = 0; 651 } 652 bp->b_resid = fd->sc_bcount; 653 fd->sc_skip = 0; 654 fd->sc_q.b_actf = bp->b_actf; 655 biodone(bp); 656 /* turn off motor 5s from now */ 657 timeout(fd_motor_off, fd, 5 * hz); 658 fdc->sc_state = DEVIDLE; 659 } 660 661 int 662 fdread(dev, uio) 663 dev_t dev; 664 struct uio *uio; 665 { 666 667 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 668 } 669 670 int 671 fdwrite(dev, uio) 672 dev_t dev; 673 struct uio *uio; 674 { 675 676 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 677 } 678 679 void 680 fd_set_motor(fdc, reset) 681 struct fdc_softc *fdc; 682 int reset; 683 { 684 struct fd_softc *fd; 685 int n; 686 687 DPRINTF(("fd_set_motor:\n")); 688 for (n = 0; n < 4; n++) 689 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) { 690 infdc.select = 0x80 | (fd->sc_type->rate << 4)| n; 691 } 692 } 693 694 void 695 fd_motor_off(arg) 696 void *arg; 697 { 698 struct fd_softc *fd = arg; 699 int s; 700 701 DPRINTF(("fd_motor_off:\n")); 702 703 s = splbio(); 704 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 705 infdc.select = (fd->sc_type->rate << 4) | fd->sc_drive; 706 #if 0 707 fd_set_motor((struct fdc_softc *)&fdc_softc[0], 0); /* XXX */ 708 #endif 709 splx(s); 710 } 711 712 void 713 fd_motor_on(arg) 714 void *arg; 715 { 716 struct fd_softc *fd = arg; 717 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 718 int s; 719 720 DPRINTF(("fd_motor_on:\n")); 721 722 s = splbio(); 723 fd->sc_flags &= ~FD_MOTOR_WAIT; 724 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 725 (void) fdcintr(); 726 splx(s); 727 } 728 729 int 730 fdcresult(fdc) 731 struct fdc_softc *fdc; 732 { 733 u_char i; 734 int j = 100000, 735 n = 0; 736 737 for (; j; j--) { 738 739 i = infdc.stat & (NE7_DIO | NE7_RQM | NE7_CB); 740 741 742 if (i == NE7_RQM) 743 return n; 744 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 745 if (n >= sizeof(fdc->sc_status)) { 746 log(LOG_ERR, "fdcresult: overrun\n"); 747 return -1; 748 } 749 fdc->sc_status[n++] = infdc.data; 750 } 751 } 752 log(LOG_ERR, "fdcresult: timeout\n"); 753 return -1; 754 } 755 756 int 757 out_fdc(x) 758 u_char x; 759 { 760 int i = 100000; 761 762 while ((infdc.stat & NE7_DIO) && i-- > 0); 763 if (i <= 0) 764 return -1; 765 while ((infdc.stat & NE7_RQM) == 0 && i-- > 0); 766 if (i <= 0) 767 return -1; 768 769 infdc.data = x; 770 771 return 0; 772 } 773 774 int 775 Fdopen(dev, flags, fmt) 776 dev_t dev; 777 int flags, fmt; 778 { 779 int unit; 780 struct fd_softc *fd; 781 struct fd_type *type; 782 783 unit = FDUNIT(dev); 784 if (unit >= fd_cd.cd_ndevs) 785 return ENXIO; 786 fd = fd_cd.cd_devs[unit]; 787 if (fd == 0) 788 return ENXIO; 789 type = fd_dev_to_type(fd, dev); 790 if (type == NULL) 791 return ENXIO; 792 793 if ((fd->sc_flags & FD_OPEN) != 0 && 794 fd->sc_type != type) 795 return EBUSY; 796 797 if ((fd->sc_flags & FD_OPEN) == 0) { 798 /* Lock eject button */ 799 infdc.drvstat = 0x40 | ( 1 << unit); 800 infdc.drvstat = 0x40; 801 } 802 803 fd->sc_type = type; 804 fd->sc_cylin = -1; 805 806 switch (fmt) { 807 case S_IFCHR: 808 fd->sc_flags |= FD_COPEN; 809 break; 810 case S_IFBLK: 811 fd->sc_flags |= FD_BOPEN; 812 break; 813 } 814 815 fdgetdisklabel(fd, dev); 816 817 return 0; 818 } 819 820 int 821 fdclose(dev, flags, fmt) 822 dev_t dev; 823 int flags, fmt; 824 { 825 int unit = FDUNIT(dev); 826 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 827 828 DPRINTF(("fdclose %d\n", unit)); 829 830 switch (fmt) { 831 case S_IFCHR: 832 fd->sc_flags &= ~FD_COPEN; 833 break; 834 case S_IFBLK: 835 fd->sc_flags &= ~FD_BOPEN; 836 break; 837 } 838 839 if ((fd->sc_flags & FD_OPEN) == 0) { 840 infdc.drvstat = ( 1 << unit); 841 infdc.drvstat = 0x00; 842 } 843 return 0; 844 } 845 846 void 847 fdcstart(fdc) 848 struct fdc_softc *fdc; 849 { 850 851 #ifdef DIAGNOSTIC 852 /* only got here if controller's drive queue was inactive; should 853 be in idle state */ 854 if (fdc->sc_state != DEVIDLE) { 855 printf("fdcstart: not idle\n"); 856 return; 857 } 858 #endif 859 (void) fdcintr(); 860 } 861 862 void 863 fdcstatus(dv, n, s) 864 struct device *dv; 865 int n; 866 char *s; 867 { 868 struct fdc_softc *fdc = (void *)dv->dv_parent; 869 870 if (n == 0) { 871 out_fdc(NE7CMD_SENSEI); 872 (void) fdcresult(fdc); 873 n = 2; 874 } 875 876 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 877 878 switch (n) { 879 case 0: 880 printf("\n"); 881 break; 882 case 2: 883 printf(" (st0 %b cyl %d)\n", 884 fdc->sc_status[0], NE7_ST0BITS, 885 fdc->sc_status[1]); 886 break; 887 case 7: 888 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d\n", 889 fdc->sc_status[0], NE7_ST0BITS, 890 fdc->sc_status[1], NE7_ST1BITS, 891 fdc->sc_status[2], NE7_ST2BITS, 892 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 893 break; 894 #ifdef DIAGNOSTIC 895 default: 896 printf(" fdcstatus: weird size: %d\n", n); 897 break; 898 #endif 899 } 900 } 901 902 void 903 fdctimeout(arg) 904 void *arg; 905 { 906 struct fdc_softc *fdc = arg; 907 struct fd_softc *fd = fdc->sc_drives.tqh_first; 908 int s; 909 910 s = splbio(); 911 fdcstatus(&fd->sc_dev, 0, "timeout"); 912 913 if (fd->sc_q.b_actf) 914 fdc->sc_state++; 915 else 916 fdc->sc_state = DEVIDLE; 917 918 (void) fdcintr(); 919 splx(s); 920 } 921 922 void 923 fdcpseudointr(arg) 924 void *arg; 925 { 926 int s; 927 928 /* just ensure it has the right spl */ 929 s = splbio(); 930 (void) fdcintr(); 931 splx(s); 932 } 933 934 int 935 fdcintr() 936 { 937 struct fdc_softc *fdc = fdc_cd.cd_devs[0]; /* XXX */ 938 #define st0 fdc->sc_status[0] 939 #define cyl fdc->sc_status[1] 940 struct fd_softc *fd; 941 struct buf *bp; 942 int read, head, sec, pos, i, sectrac, nblks; 943 int tmp; 944 struct fd_type *type; 945 946 loop: 947 fd = fdc->sc_drives.tqh_first; 948 if (fd == NULL) { 949 DPRINTF(("fdcintr: set DEVIDLE\n")); 950 if (fdc->sc_state == DEVIDLE) { 951 if ((ioctlr.intr & 0x80)) { 952 out_fdc(NE7CMD_SENSEI); 953 if ((tmp = fdcresult(fdc)) != 2 || (st0 & 0xf8) != 0x20) { 954 goto loop; 955 } 956 } 957 } 958 /* no drives waiting; end */ 959 fdc->sc_state = DEVIDLE; 960 return 1; 961 } 962 963 /* Is there a transfer to this drive? If not, deactivate drive. */ 964 bp = fd->sc_q.b_actf; 965 if (bp == NULL) { 966 fd->sc_ops = 0; 967 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 968 fd->sc_q.b_active = 0; 969 goto loop; 970 } 971 972 switch (fdc->sc_state) { 973 case DEVIDLE: 974 DPRINTF(("fdcintr: in DEVIDLE\n")); 975 fdc->sc_errors = 0; 976 fd->sc_skip = 0; 977 fd->sc_bcount = bp->b_bcount; 978 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 979 untimeout(fd_motor_off, fd); 980 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 981 fdc->sc_state = MOTORWAIT; 982 return 1; 983 } 984 if ((fd->sc_flags & FD_MOTOR) == 0) { 985 /* Turn on the motor */ 986 /* being careful about other drives. */ 987 for (i = 0; i < 4; i++) { 988 struct fd_softc *ofd = fdc->sc_fd[i]; 989 if (ofd && ofd->sc_flags & FD_MOTOR) { 990 untimeout(fd_motor_off, ofd); 991 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 992 break; 993 } 994 } 995 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 996 fd_set_motor(fdc, 0); 997 fdc->sc_state = MOTORWAIT; 998 /* allow .5s for motor to stabilize */ 999 timeout(fd_motor_on, fd, hz / 2); 1000 return 1; 1001 } 1002 /* Make sure the right drive is selected. */ 1003 fd_set_motor(fdc, 0); 1004 1005 /* fall through */ 1006 case DOSEEK: 1007 doseek: 1008 DPRINTF(("fdcintr: in DOSEEK\n")); 1009 if (fd->sc_cylin == bp->b_cylin) 1010 goto doio; 1011 1012 out_fdc(NE7CMD_SPECIFY);/* specify command */ 1013 out_fdc(0xd0); /* XXX const */ 1014 out_fdc(0x10); 1015 1016 out_fdc(NE7CMD_SEEK); /* seek function */ 1017 out_fdc(fd->sc_drive); /* drive number */ 1018 out_fdc(bp->b_cylin * fd->sc_type->step); 1019 1020 fd->sc_cylin = -1; 1021 fdc->sc_state = SEEKWAIT; 1022 1023 fd->sc_dk.dk_seek++; 1024 disk_busy(&fd->sc_dk); 1025 1026 timeout(fdctimeout, fdc, 4 * hz); 1027 return 1; 1028 1029 case DOIO: 1030 doio: 1031 DPRINTF(("fdcintr: DOIO: ")); 1032 type = fd->sc_type; 1033 sectrac = type->sectrac; 1034 pos = fd->sc_blkno % (sectrac * (1 << (type->secsize - 2))); 1035 sec = pos / (1 << (type->secsize - 2)); 1036 if (type->secsize == 2) { 1037 fd->sc_part = SEC_P11; 1038 nblks = (sectrac - sec) << (type->secsize - 2); 1039 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1040 DPRINTF(("nblks(0)")); 1041 } else if ((fd->sc_blkno % 2) == 0) { 1042 if (fd->sc_bcount & 0x00000200) { 1043 if (fd->sc_bcount == FDC_BSIZE) { 1044 fd->sc_part = SEC_P10; 1045 nblks = 1; 1046 DPRINTF(("nblks(1)")); 1047 } else { 1048 fd->sc_part = SEC_P11; 1049 nblks = (sectrac - sec) * 2; 1050 nblks = min(nblks, fd->sc_bcount 1051 / FDC_BSIZE - 1); 1052 DPRINTF(("nblks(2)")); 1053 } 1054 } else { 1055 fd->sc_part = SEC_P11; 1056 nblks = (sectrac - sec) 1057 << (type->secsize - 2); 1058 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1059 DPRINTF(("nblks(3)")); 1060 } 1061 } else { 1062 fd->sc_part = SEC_P01; 1063 nblks = 1; 1064 DPRINTF(("nblks(4)")); 1065 } 1066 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1067 DPRINTF((" %d\n", nblks)); 1068 fd->sc_nblks = nblks; 1069 fd->sc_nbytes = nblks * FDC_BSIZE; 1070 head = (fd->sc_blkno 1071 % (type->seccyl * (1 << (type->secsize - 2)))) 1072 / (type->sectrac * (1 << (type->secsize - 2))); 1073 1074 #ifdef DIAGNOSTIC 1075 {int block; 1076 block = ((fd->sc_cylin * type->heads + head) * type->sectrac 1077 + sec) * (1 << (type->secsize - 2)); 1078 block += (fd->sc_part == SEC_P01) ? 1 : 0; 1079 if (block != fd->sc_blkno) { 1080 printf("C H R N: %d %d %d %d\n", fd->sc_cylin, head, sec, type->secsize); 1081 printf("fdcintr: doio: block %d != blkno %d\n", block, fd->sc_blkno); 1082 #ifdef DDB 1083 Debugger(); 1084 #endif 1085 }} 1086 #endif 1087 read = bp->b_flags & B_READ; 1088 DPRINTF(("fdcintr: %s drive %d track %d head %d sec %d nblks %d, skip %d\n", 1089 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1090 head, sec, nblks, fd->sc_skip)); 1091 DPRINTF(("C H R N: %d %d %d %d\n", fd->sc_cylin, head, sec, 1092 type->secsize)); 1093 1094 if (fd->sc_part != SEC_P11) 1095 goto docopy; 1096 1097 fdc_dmastart(read, bp->b_data + fd->sc_skip, fd->sc_nbytes); 1098 if (read) 1099 out_fdc(NE7CMD_READ); /* READ */ 1100 else 1101 out_fdc(NE7CMD_WRITE); /* WRITE */ 1102 out_fdc((head << 2) | fd->sc_drive); 1103 out_fdc(bp->b_cylin); /* cylinder */ 1104 out_fdc(head); 1105 out_fdc(sec + 1); /* sector +1 */ 1106 out_fdc(type->secsize); /* sector size */ 1107 out_fdc(type->sectrac); /* sectors/track */ 1108 out_fdc(type->gap1); /* gap1 size */ 1109 out_fdc(type->datalen); /* data length */ 1110 fdc->sc_state = IOCOMPLETE; 1111 1112 disk_busy(&fd->sc_dk); 1113 1114 /* allow 2 seconds for operation */ 1115 timeout(fdctimeout, fdc, 2 * hz); 1116 return 1; /* will return later */ 1117 1118 case DOCOPY: 1119 docopy: 1120 DPRINTF(("fdcintr: DOCOPY:\n")); 1121 fdc_dmastart(B_READ, fd->sc_copybuf, 1024); 1122 out_fdc(NE7CMD_READ); /* READ */ 1123 out_fdc((head << 2) | fd->sc_drive); 1124 out_fdc(bp->b_cylin); /* cylinder */ 1125 out_fdc(head); 1126 out_fdc(sec + 1); /* sector +1 */ 1127 out_fdc(type->secsize); /* sector size */ 1128 out_fdc(type->sectrac); /* sectors/track */ 1129 out_fdc(type->gap1); /* gap1 size */ 1130 out_fdc(type->datalen); /* data length */ 1131 fdc->sc_state = COPYCOMPLETE; 1132 /* allow 2 seconds for operation */ 1133 timeout(fdctimeout, fdc, 2 * hz); 1134 return 1; /* will return later */ 1135 1136 case DOIOHALF: 1137 doiohalf: 1138 DPRINTF((" DOIOHALF:\n")); 1139 1140 #ifdef DIAGNOSTIC 1141 type = fd->sc_type; 1142 sectrac = type->sectrac; 1143 pos = fd->sc_blkno % (sectrac * (1 << (type->secsize - 2))); 1144 sec = pos / (1 << (type->secsize - 2)); 1145 head = (fd->sc_blkno 1146 % (type->seccyl * (1 << (type->secsize - 2)))) 1147 / (type->sectrac * (1 << (type->secsize - 2))); 1148 {int block; 1149 block = ((fd->sc_cylin * type->heads + head) * type->sectrac + sec) 1150 * (1 << (type->secsize - 2)); 1151 block += (fd->sc_part == SEC_P01) ? 1 : 0; 1152 if (block != fd->sc_blkno) { 1153 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1154 #ifdef DDB 1155 Debugger(); 1156 #endif 1157 }} 1158 #endif 1159 if (read = bp->b_flags & B_READ) { 1160 bcopy(fd->sc_copybuf 1161 + (fd->sc_part & SEC_P01 ? FDC_BSIZE : 0), 1162 bp->b_data + fd->sc_skip, 1163 FDC_BSIZE); 1164 fdc->sc_state = IOCOMPLETE; 1165 goto iocomplete2; 1166 } else { 1167 bcopy(bp->b_data + fd->sc_skip, 1168 fd->sc_copybuf 1169 + (fd->sc_part & SEC_P01 ? FDC_BSIZE : 0), 1170 FDC_BSIZE); 1171 fdc_dmastart(read, fd->sc_copybuf, 1024); 1172 } 1173 out_fdc(NE7CMD_WRITE); /* WRITE */ 1174 out_fdc((head << 2) | fd->sc_drive); 1175 out_fdc(bp->b_cylin); /* cylinder */ 1176 out_fdc(head); 1177 out_fdc(sec + 1); /* sector +1 */ 1178 out_fdc(fd->sc_type->secsize); /* sector size */ 1179 out_fdc(sectrac); /* sectors/track */ 1180 out_fdc(fd->sc_type->gap1); /* gap1 size */ 1181 out_fdc(fd->sc_type->datalen); /* data length */ 1182 fdc->sc_state = IOCOMPLETE; 1183 /* allow 2 seconds for operation */ 1184 timeout(fdctimeout, fdc, 2 * hz); 1185 return 1; /* will return later */ 1186 1187 case SEEKWAIT: 1188 untimeout(fdctimeout, fdc); 1189 fdc->sc_state = SEEKCOMPLETE; 1190 /* allow 1/50 second for heads to settle */ 1191 /* timeout(fdcpseudointr, fdc, hz / 50);*/ 1192 return 1; 1193 1194 case SEEKCOMPLETE: 1195 /* Make sure seek really happened */ 1196 DPRINTF(("fdcintr: SEEKCOMPLETE: FDC status = %x\n", 1197 infdc.stat)); 1198 out_fdc(NE7CMD_SENSEI); 1199 tmp = fdcresult(fdc); 1200 if ((st0 & 0xf8) == 0xc0) { 1201 DPRINTF(("fdcintr: first seek!\n")); 1202 fdc->sc_state = DORECAL; 1203 goto loop; 1204 } else if (tmp != 2 || (st0 & 0xf8) != 0x20 || cyl != bp->b_cylin) { 1205 #ifdef FDDEBUG 1206 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1207 #endif 1208 fdcretry(fdc); 1209 goto loop; 1210 } 1211 fd->sc_cylin = bp->b_cylin; 1212 goto doio; 1213 1214 case IOTIMEDOUT: 1215 #if 0 1216 isa_dmaabort(fdc->sc_drq); 1217 #endif 1218 case SEEKTIMEDOUT: 1219 case RECALTIMEDOUT: 1220 case RESETTIMEDOUT: 1221 fdcretry(fdc); 1222 goto loop; 1223 1224 case IOCOMPLETE: /* IO DONE, post-analyze */ 1225 untimeout(fdctimeout, fdc); 1226 DPRINTF(("fdcintr: in IOCOMPLETE\n")); 1227 if ((tmp = fdcresult(fdc)) != 7 || (st0 & 0xf8) != 0) { 1228 printf("fdcintr: resnum=%d, st0=%x\n", tmp, st0); 1229 #if 0 1230 isa_dmaabort(fdc->sc_drq); 1231 #endif 1232 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1233 "read failed" : "write failed"); 1234 printf("blkno %d nblks %d\n", 1235 fd->sc_blkno, fd->sc_nblks); 1236 fdcretry(fdc); 1237 goto loop; 1238 } 1239 #if 0 1240 isa_dmadone(bp->b_flags & B_READ, bp->b_data + fd->sc_skip, 1241 nblks * FDC_BSIZE, fdc->sc_drq); 1242 #endif 1243 iocomplete2: 1244 if (fdc->sc_errors) { 1245 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1246 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1247 printf("\n"); 1248 fdc->sc_errors = 0; 1249 } 1250 fd->sc_blkno += fd->sc_nblks; 1251 fd->sc_skip += fd->sc_nbytes; 1252 fd->sc_bcount -= fd->sc_nbytes; 1253 DPRINTF(("fd->sc_bcount = %d\n", fd->sc_bcount)); 1254 if (fd->sc_bcount > 0) { 1255 bp->b_cylin = fd->sc_blkno 1256 / (fd->sc_type->seccyl 1257 * (1 << (fd->sc_type->secsize - 2))); 1258 goto doseek; 1259 } 1260 fdfinish(fd, bp); 1261 goto loop; 1262 1263 case COPYCOMPLETE: /* IO DONE, post-analyze */ 1264 DPRINTF(("fdcintr: COPYCOMPLETE:")); 1265 untimeout(fdctimeout, fdc); 1266 if ((tmp = fdcresult(fdc)) != 7 || (st0 & 0xf8) != 0) { 1267 printf("fdcintr: resnum=%d, st0=%x\n", tmp, st0); 1268 #if 0 1269 isa_dmaabort(fdc->sc_drq); 1270 #endif 1271 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1272 "read failed" : "write failed"); 1273 printf("blkno %d nblks %d\n", 1274 fd->sc_blkno, fd->sc_nblks); 1275 fdcretry(fdc); 1276 goto loop; 1277 } 1278 goto doiohalf; 1279 1280 case DORESET: 1281 DPRINTF(("fdcintr: in DORESET\n")); 1282 /* try a reset, keep motor on */ 1283 fd_set_motor(fdc, 1); 1284 DELAY(100); 1285 fd_set_motor(fdc, 0); 1286 fdc->sc_state = RESETCOMPLETE; 1287 timeout(fdctimeout, fdc, hz / 2); 1288 return 1; /* will return later */ 1289 1290 case RESETCOMPLETE: 1291 DPRINTF(("fdcintr: in RESETCOMPLETE\n")); 1292 untimeout(fdctimeout, fdc); 1293 /* clear the controller output buffer */ 1294 for (i = 0; i < 4; i++) { 1295 out_fdc(NE7CMD_SENSEI); 1296 (void) fdcresult(fdc); 1297 } 1298 1299 /* fall through */ 1300 case DORECAL: 1301 DPRINTF(("fdcintr: in DORECAL\n")); 1302 out_fdc(NE7CMD_RECAL); /* recalibrate function */ 1303 out_fdc(fd->sc_drive); 1304 fdc->sc_state = RECALWAIT; 1305 timeout(fdctimeout, fdc, 5 * hz); 1306 return 1; /* will return later */ 1307 1308 case RECALWAIT: 1309 DPRINTF(("fdcintr: in RECALWAIT\n")); 1310 untimeout(fdctimeout, fdc); 1311 fdc->sc_state = RECALCOMPLETE; 1312 /* allow 1/30 second for heads to settle */ 1313 /* timeout(fdcpseudointr, fdc, hz / 30);*/ 1314 return 1; /* will return later */ 1315 1316 case RECALCOMPLETE: 1317 DPRINTF(("fdcintr: in RECALCOMPLETE\n")); 1318 out_fdc(NE7CMD_SENSEI); 1319 tmp = fdcresult(fdc); 1320 if ((st0 & 0xf8) == 0xc0) { 1321 DPRINTF(("fdcintr: first seek!\n")); 1322 fdc->sc_state = DORECAL; 1323 goto loop; 1324 } else if (tmp != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1325 #ifdef FDDEBUG 1326 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1327 #endif 1328 fdcretry(fdc); 1329 goto loop; 1330 } 1331 fd->sc_cylin = 0; 1332 goto doseek; 1333 1334 case MOTORWAIT: 1335 if (fd->sc_flags & FD_MOTOR_WAIT) 1336 return 1; /* time's not up yet */ 1337 goto doseek; 1338 1339 default: 1340 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1341 return 1; 1342 } 1343 #ifdef DIAGNOSTIC 1344 panic("fdcintr: impossible"); 1345 #endif 1346 #undef st0 1347 #undef cyl 1348 } 1349 1350 void 1351 fdcretry(fdc) 1352 struct fdc_softc *fdc; 1353 { 1354 struct fd_softc *fd; 1355 struct buf *bp; 1356 1357 DPRINTF(("fdcretry:\n")); 1358 fd = fdc->sc_drives.tqh_first; 1359 bp = fd->sc_q.b_actf; 1360 1361 switch (fdc->sc_errors) { 1362 case 0: 1363 /* try again */ 1364 fdc->sc_state = SEEKCOMPLETE; 1365 break; 1366 1367 case 1: case 2: case 3: 1368 /* didn't work; try recalibrating */ 1369 fdc->sc_state = DORECAL; 1370 break; 1371 1372 case 4: 1373 /* still no go; reset the bastard */ 1374 fdc->sc_state = DORESET; 1375 break; 1376 1377 default: 1378 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1379 fd->sc_skip, (struct disklabel *)NULL); 1380 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n", 1381 fdc->sc_status[0], NE7_ST0BITS, 1382 fdc->sc_status[1], NE7_ST1BITS, 1383 fdc->sc_status[2], NE7_ST2BITS, 1384 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1385 1386 bp->b_flags |= B_ERROR; 1387 bp->b_error = EIO; 1388 fdfinish(fd, bp); 1389 } 1390 fdc->sc_errors++; 1391 } 1392 1393 int 1394 fdsize(dev) 1395 dev_t dev; 1396 { 1397 1398 /* Swapping to floppies would not make sense. */ 1399 return -1; 1400 } 1401 1402 int 1403 fddump(dev, blkno, va, size) 1404 dev_t dev; 1405 daddr_t blkno; 1406 caddr_t va; 1407 size_t size; 1408 { 1409 1410 /* Not implemented. */ 1411 return ENXIO; 1412 } 1413 1414 int 1415 fdioctl(dev, cmd, addr, flag) 1416 dev_t dev; 1417 u_long cmd; 1418 caddr_t addr; 1419 int flag; 1420 { 1421 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1422 int unit = FDUNIT(dev); 1423 struct disklabel buffer; 1424 int error; 1425 1426 DPRINTF(("fdioctl:\n")); 1427 switch (cmd) { 1428 case DIOCGDINFO: 1429 #if 1 1430 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1431 return(0); 1432 #else 1433 bzero(&buffer, sizeof(buffer)); 1434 1435 buffer.d_secpercyl = fd->sc_type->seccyl; 1436 buffer.d_type = DTYPE_FLOPPY; 1437 buffer.d_secsize = 128 << fd->sc_type->secsize; 1438 1439 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1440 return EINVAL; 1441 1442 *(struct disklabel *)addr = buffer; 1443 return 0; 1444 #endif 1445 1446 case DIOCGPART: 1447 ((struct partinfo *)addr)->disklab = fd->sc_dk.dk_label; 1448 ((struct partinfo *)addr)->part = 1449 &fd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1450 return(0); 1451 1452 case DIOCWLABEL: 1453 if ((flag & FWRITE) == 0) 1454 return EBADF; 1455 /* XXX do something */ 1456 return 0; 1457 1458 case DIOCWDINFO: 1459 if ((flag & FWRITE) == 0) 1460 return EBADF; 1461 1462 error = setdisklabel(&buffer, (struct disklabel *)addr, 0, NULL); 1463 if (error) 1464 return error; 1465 1466 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1467 return error; 1468 1469 case DIOCLOCK: 1470 /* 1471 * Nothing to do here, really. 1472 */ 1473 return 0; /* XXX */ 1474 1475 case DIOCEJECT: 1476 fd_do_eject(unit); 1477 return 0; 1478 1479 default: 1480 return ENOTTY; 1481 } 1482 1483 #ifdef DIAGNOSTIC 1484 panic("fdioctl: impossible"); 1485 #endif 1486 } 1487 1488 void 1489 fd_do_eject(unit) 1490 int unit; 1491 { 1492 infdc.drvstat = 0x20 | ( 1 << unit); 1493 DELAY(1); /* XXX */ 1494 infdc.drvstat = 0x20; 1495 } 1496 1497 /* 1498 * Build disk label. For now we only create a label from what we know 1499 * from 'sc'. 1500 */ 1501 static int 1502 fdgetdisklabel(sc, dev) 1503 struct fd_softc *sc; 1504 dev_t dev; 1505 { 1506 struct disklabel *lp; 1507 int part; 1508 1509 #ifdef FDDEBUG 1510 printf("fdgetdisklabel()\n"); 1511 #endif 1512 1513 part = DISKPART(dev); 1514 lp = sc->sc_dk.dk_label; 1515 bzero(lp, sizeof(struct disklabel)); 1516 1517 lp->d_secsize = 128 << sc->sc_type->secsize; 1518 lp->d_ntracks = sc->sc_type->heads; 1519 lp->d_nsectors = sc->sc_type->sectrac; 1520 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1521 lp->d_ncylinders = sc->sc_type->size / lp->d_secpercyl; 1522 lp->d_secperunit = sc->sc_type->size; 1523 1524 lp->d_type = DTYPE_FLOPPY; 1525 lp->d_rpm = 300; /* XXX */ 1526 lp->d_interleave = 1; /* FIXME: is this OK? */ 1527 lp->d_bbsize = 0; 1528 lp->d_sbsize = 0; 1529 lp->d_npartitions = part + 1; 1530 #define STEP_DELAY 6000 /* 6ms (6000us) delay after stepping */ 1531 lp->d_trkseek = STEP_DELAY; /* XXX */ 1532 lp->d_magic = DISKMAGIC; 1533 lp->d_magic2 = DISKMAGIC; 1534 lp->d_checksum = dkcksum(lp); 1535 lp->d_partitions[part].p_size = lp->d_secperunit; 1536 lp->d_partitions[part].p_fstype = FS_UNUSED; 1537 lp->d_partitions[part].p_fsize = 1024; 1538 lp->d_partitions[part].p_frag = 8; 1539 1540 return(0); 1541 } 1542 1543 /* ARGSUSED */ 1544 void 1545 fd_mountroot_hook(dev) 1546 struct device *dev; 1547 { 1548 int c; 1549 1550 fd_do_eject(dev->dv_unit); 1551 printf("Insert filesystem floppy and press return."); 1552 for (;;) { 1553 c = cngetc(); 1554 if ((c == '\r') || (c == '\n')) { 1555 printf("\n"); 1556 return; 1557 } 1558 } 1559 } 1560
Indexes created Tue Sep 30 07:10:03 GMT 2025