fd.c revision 1.55
1 /* $NetBSD: fd.c,v 1.55 1998/01/12 20:23:49 thorpej 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/file.h> 47 #include <sys/ioctl.h> 48 #include <sys/device.h> 49 #include <sys/disklabel.h> 50 #include <sys/dkstat.h> 51 #include <sys/disk.h> 52 #include <sys/fdio.h> 53 #include <sys/buf.h> 54 #include <sys/malloc.h> 55 #include <sys/proc.h> 56 #include <sys/uio.h> 57 #include <sys/stat.h> 58 #include <sys/syslog.h> 59 #include <sys/queue.h> 60 #include <sys/conf.h> 61 62 #include <dev/cons.h> 63 64 #include <machine/cpu.h> 65 #include <machine/autoconf.h> 66 #include <machine/conf.h> 67 68 #include <sparc/sparc/auxreg.h> 69 #include <sparc/dev/fdreg.h> 70 #include <sparc/dev/fdvar.h> 71 72 #define FDUNIT(dev) (minor(dev) / 8) 73 #define FDTYPE(dev) (minor(dev) % 8) 74 75 /* XXX misuse a flag to identify format operation */ 76 #define B_FORMAT B_XXX 77 #define b_cylin b_resid 78 79 #define FD_DEBUG 80 #ifdef FD_DEBUG 81 int fdc_debug = 0; 82 #endif 83 84 enum fdc_state { 85 DEVIDLE = 0, 86 MOTORWAIT, 87 DOSEEK, 88 SEEKWAIT, 89 SEEKTIMEDOUT, 90 SEEKCOMPLETE, 91 DOIO, 92 IOCOMPLETE, 93 IOTIMEDOUT, 94 DORESET, 95 RESETCOMPLETE, 96 RESETTIMEDOUT, 97 DORECAL, 98 RECALWAIT, 99 RECALTIMEDOUT, 100 RECALCOMPLETE, 101 }; 102 103 /* software state, per controller */ 104 struct fdc_softc { 105 struct device sc_dev; /* boilerplate */ 106 struct intrhand sc_sih; 107 struct intrhand sc_hih; 108 caddr_t sc_reg; 109 struct fd_softc *sc_fd[4]; /* pointers to children */ 110 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 111 enum fdc_state sc_state; 112 int sc_flags; 113 #define FDC_82077 0x01 114 #define FDC_NEEDHEADSETTLE 0x02 115 #define FDC_EIS 0x04 116 int sc_errors; /* number of retries so far */ 117 int sc_overruns; /* number of DMA overruns */ 118 int sc_cfg; /* current configuration */ 119 struct fdcio sc_io; 120 #define sc_reg_msr sc_io.fdcio_reg_msr 121 #define sc_reg_fifo sc_io.fdcio_reg_fifo 122 #define sc_reg_dor sc_io.fdcio_reg_dor 123 #define sc_reg_drs sc_io.fdcio_reg_msr 124 #define sc_istate sc_io.fdcio_istate 125 #define sc_data sc_io.fdcio_data 126 #define sc_tc sc_io.fdcio_tc 127 #define sc_nstat sc_io.fdcio_nstat 128 #define sc_status sc_io.fdcio_status 129 #define sc_intrcnt sc_io.fdcio_intrcnt 130 }; 131 132 #ifndef FDC_C_HANDLER 133 extern struct fdcio *fdciop; 134 #endif 135 136 /* controller driver configuration */ 137 int fdcmatch __P((struct device *, struct cfdata *, void *)); 138 void fdcattach __P((struct device *, struct device *, void *)); 139 140 struct cfattach fdc_ca = { 141 sizeof(struct fdc_softc), fdcmatch, fdcattach 142 }; 143 144 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 145 146 /* 147 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 148 * we tell them apart. 149 */ 150 struct fd_type { 151 int sectrac; /* sectors per track */ 152 int heads; /* number of heads */ 153 int seccyl; /* sectors per cylinder */ 154 int secsize; /* size code for sectors */ 155 int datalen; /* data len when secsize = 0 */ 156 int steprate; /* step rate and head unload time */ 157 int gap1; /* gap len between sectors */ 158 int gap2; /* formatting gap */ 159 int cylinders; /* total num of cylinders */ 160 int size; /* size of disk in sectors */ 161 int step; /* steps per cylinder */ 162 int rate; /* transfer speed code */ 163 int fillbyte; /* format fill byte */ 164 int interleave; /* interleave factor (formatting) */ 165 char *name; 166 }; 167 168 /* The order of entries in the following table is important -- BEWARE! */ 169 struct fd_type fd_types[] = { 170 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 171 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 172 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 173 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 174 }; 175 176 /* software state, per disk (with up to 4 disks per ctlr) */ 177 struct fd_softc { 178 struct device sc_dv; /* generic device info */ 179 struct disk sc_dk; /* generic disk info */ 180 181 struct fd_type *sc_deftype; /* default type descriptor */ 182 struct fd_type *sc_type; /* current type descriptor */ 183 184 daddr_t sc_blkno; /* starting block number */ 185 int sc_bcount; /* byte count left */ 186 int sc_skip; /* bytes already transferred */ 187 int sc_nblks; /* number of blocks currently tranferring */ 188 int sc_nbytes; /* number of bytes currently tranferring */ 189 190 int sc_drive; /* physical unit number */ 191 int sc_flags; 192 #define FD_OPEN 0x01 /* it's open */ 193 #define FD_MOTOR 0x02 /* motor should be on */ 194 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 195 int sc_cylin; /* where we think the head is */ 196 int sc_opts; /* user-set options */ 197 198 void *sc_sdhook; /* shutdownhook cookie */ 199 200 TAILQ_ENTRY(fd_softc) sc_drivechain; 201 int sc_ops; /* I/O ops since last switch */ 202 struct buf sc_q; /* head of buf chain */ 203 }; 204 205 /* floppy driver configuration */ 206 int fdmatch __P((struct device *, struct cfdata *, void *)); 207 void fdattach __P((struct device *, struct device *, void *)); 208 209 struct cfattach fd_ca = { 210 sizeof(struct fd_softc), fdmatch, fdattach 211 }; 212 213 extern struct cfdriver fd_cd; 214 215 void fdgetdisklabel __P((dev_t)); 216 int fd_get_parms __P((struct fd_softc *)); 217 void fdstrategy __P((struct buf *)); 218 void fdstart __P((struct fd_softc *)); 219 int fdprint __P((void *, const char *)); 220 221 struct dkdriver fddkdriver = { fdstrategy }; 222 223 struct fd_type *fd_nvtotype __P((char *, int, int)); 224 void fd_set_motor __P((struct fdc_softc *fdc)); 225 void fd_motor_off __P((void *arg)); 226 void fd_motor_on __P((void *arg)); 227 int fdcresult __P((struct fdc_softc *fdc)); 228 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 229 void fdcstart __P((struct fdc_softc *fdc)); 230 void fdcstatus __P((struct device *dv, int n, char *s)); 231 void fdc_reset __P((struct fdc_softc *fdc)); 232 void fdctimeout __P((void *arg)); 233 void fdcpseudointr __P((void *arg)); 234 #ifdef FDC_C_HANDLER 235 int fdchwintr __P((struct fdc_softc *)); 236 #else 237 void fdchwintr __P((void)); 238 #endif 239 int fdcswintr __P((struct fdc_softc *)); 240 int fdcstate __P((struct fdc_softc *)); 241 void fdcretry __P((struct fdc_softc *fdc)); 242 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 243 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 244 void fd_do_eject __P((struct fd_softc *)); 245 void fd_mountroot_hook __P((struct device *)); 246 static void fdconf __P((struct fdc_softc *)); 247 248 #if PIL_FDSOFT == 4 249 #define IE_FDSOFT IE_L4 250 #else 251 #error 4 252 #endif 253 254 #ifdef FDC_C_HANDLER 255 #if defined(SUN4M) 256 #define FD_SET_SWINTR do { \ 257 if (CPU_ISSUN4M) \ 258 raise(0, PIL_FDSOFT); \ 259 else \ 260 ienab_bis(IE_L4); \ 261 } while(0) 262 #else 263 #define AUDIO_SET_SWINTR ienab_bis(IE_FDSOFT) 264 #endif /* defined(SUN4M) */ 265 #endif /* FDC_C_HANDLER */ 266 267 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 268 269 int 270 fdcmatch(parent, match, aux) 271 struct device *parent; 272 struct cfdata *match; 273 void *aux; 274 { 275 register struct confargs *ca = aux; 276 register struct romaux *ra = &ca->ca_ra; 277 278 /* 279 * Floppy doesn't exist on sun4. 280 */ 281 if (CPU_ISSUN4) 282 return (0); 283 284 /* 285 * Floppy controller is on mainbus on sun4c. 286 */ 287 if ((CPU_ISSUN4C) && (ca->ca_bustype != BUS_MAIN)) 288 return (0); 289 290 /* 291 * Floppy controller is on obio on sun4m. 292 */ 293 if ((CPU_ISSUN4M) && (ca->ca_bustype != BUS_OBIO)) 294 return (0); 295 296 /* Sun PROMs call the controller an "fd" or "SUNW,fdtwo" */ 297 if (strcmp(OBP_FDNAME, ra->ra_name)) 298 return (0); 299 300 if (ca->ca_ra.ra_vaddr && 301 probeget(ca->ca_ra.ra_vaddr, 1) == -1) { 302 return (0); 303 } 304 305 return (1); 306 } 307 308 /* 309 * Arguments passed between fdcattach and fdprobe. 310 */ 311 struct fdc_attach_args { 312 int fa_drive; 313 struct bootpath *fa_bootpath; 314 struct fd_type *fa_deftype; 315 }; 316 317 /* 318 * Print the location of a disk drive (called just before attaching the 319 * the drive). If `fdc' is not NULL, the drive was found but was not 320 * in the system config file; print the drive name as well. 321 * Return QUIET (config_find ignores this if the device was configured) to 322 * avoid printing `fdN not configured' messages. 323 */ 324 int 325 fdprint(aux, fdc) 326 void *aux; 327 const char *fdc; 328 { 329 register struct fdc_attach_args *fa = aux; 330 331 if (!fdc) 332 printf(" drive %d", fa->fa_drive); 333 return (QUIET); 334 } 335 336 static void 337 fdconf(fdc) 338 struct fdc_softc *fdc; 339 { 340 int vroom; 341 342 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 343 return; 344 345 /* 346 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 347 * the PROM thinks is appropriate. 348 */ 349 if ((vroom = fdc->sc_status[7]) == 0) 350 vroom = 0x64; 351 352 /* Configure controller to use FIFO and Implied Seek */ 353 out_fdc(fdc, NE7CMD_CFG); 354 out_fdc(fdc, vroom); 355 out_fdc(fdc, fdc->sc_cfg); 356 out_fdc(fdc, 0); /* PRETRK */ 357 /* No result phase */ 358 } 359 360 void 361 fdcattach(parent, self, aux) 362 struct device *parent, *self; 363 void *aux; 364 { 365 register struct confargs *ca = aux; 366 struct fdc_softc *fdc = (void *)self; 367 struct fdc_attach_args fa; 368 struct bootpath *bp; 369 int pri; 370 char code; 371 372 if (ca->ca_ra.ra_vaddr) 373 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 374 else 375 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_reg, 0, 376 ca->ca_ra.ra_len); 377 378 fdc->sc_state = DEVIDLE; 379 fdc->sc_istate = ISTATE_IDLE; 380 fdc->sc_flags |= FDC_EIS; 381 TAILQ_INIT(&fdc->sc_drives); 382 383 pri = ca->ca_ra.ra_intr[0].int_pri; 384 #ifdef FDC_C_HANDLER 385 fdc->sc_hih.ih_fun = (void *)fdchwintr; 386 fdc->sc_hih.ih_arg = fdc; 387 intr_establish(pri, &fdc->sc_hih); 388 #else 389 fdciop = &fdc->sc_io; 390 intr_fasttrap(pri, fdchwintr); 391 #endif 392 fdc->sc_sih.ih_fun = (void *)fdcswintr; 393 fdc->sc_sih.ih_arg = fdc; 394 intr_establish(PIL_FDSOFT, &fdc->sc_sih); 395 396 /* Assume a 82077 */ 397 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 398 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 399 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 400 401 code = '7'; 402 if (*fdc->sc_reg_dor == NE7_RQM) { 403 /* 404 * This hack from Chris Torek: apparently DOR really 405 * addresses MSR/DRS on a 82072. 406 * We used to rely on the VERSION command to tell the 407 * difference (which did not work). 408 */ 409 *fdc->sc_reg_dor = FDC_250KBPS; 410 if (*fdc->sc_reg_dor == NE7_RQM) 411 code = '2'; 412 } 413 if (code == '7') { 414 fdc->sc_flags |= FDC_82077; 415 } else { 416 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 417 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 418 fdc->sc_reg_dor = 0; 419 } 420 421 #ifdef FD_DEBUG 422 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 423 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 424 if (fdc_debug) 425 printf("[version cmd]"); 426 } 427 #endif 428 429 /* 430 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 431 * Note: CFG_EFIFO is active-low, initial threshold value: 8 432 */ 433 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 434 fdconf(fdc); 435 436 if (fdc->sc_flags & FDC_82077) { 437 /* Lock configuration across soft resets. */ 438 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 439 if (fdcresult(fdc) != 1) 440 printf(" CFGLOCK: unexpected response"); 441 } 442 443 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 444 445 printf(" pri %d, softpri %d: chip 8207%c\n", pri, PIL_FDSOFT, code); 446 447 /* 448 * Controller and drives are represented by one and the same 449 * Openprom node, so we can as well check for the floppy boots here. 450 */ 451 fa.fa_bootpath = 0; 452 if ((bp = ca->ca_ra.ra_bp) && strcmp(bp->name, OBP_FDNAME) == 0) { 453 454 switch (ca->ca_bustype) { 455 case BUS_MAIN: 456 /* 457 * We can get the bootpath in several different 458 * formats! The faked v1 bootpath looks like /fd@0,0. 459 * The v2 bootpath is either just /fd0, in which case 460 * `bp->val[0]' will have been set to -1, or /fd@x,y 461 * where <x,y> is the prom address specifier. 462 */ 463 if (((bp->val[0] == ca->ca_ra.ra_iospace) && 464 (bp->val[1] == (int)ca->ca_ra.ra_paddr)) || 465 466 ((bp->val[0] == -1) && /* v2: /fd0 */ 467 (bp->val[1] == 0)) || 468 469 ((bp->val[0] == 0) && /* v1: /fd@0,0 */ 470 (bp->val[1] == 0)) 471 ) 472 fa.fa_bootpath = bp; 473 break; 474 475 case BUS_OBIO: 476 /* 477 * floppy controller on obio (such as on the sun4m), 478 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 479 * We use "slot, offset" to determine if this is the 480 * right one. 481 */ 482 if ((bp->val[0] == ca->ca_slot) && 483 (bp->val[1] == ca->ca_offset)) 484 fa.fa_bootpath = bp; 485 break; 486 } 487 488 } 489 490 /* physical limit: four drives per controller. */ 491 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 492 fa.fa_deftype = NULL; /* unknown */ 493 fa.fa_deftype = &fd_types[0]; /* XXX */ 494 (void)config_found(self, (void *)&fa, fdprint); 495 } 496 497 bootpath_store(1, NULL); 498 } 499 500 int 501 fdmatch(parent, match, aux) 502 struct device *parent; 503 struct cfdata *match; 504 void *aux; 505 { 506 struct fdc_softc *fdc = (void *)parent; 507 struct fdc_attach_args *fa = aux; 508 int drive = fa->fa_drive; 509 int n, ok; 510 511 if (drive > 0) 512 /* XXX - for now, punt on more than one drive */ 513 return (0); 514 515 if (fdc->sc_flags & FDC_82077) { 516 /* select drive and turn on motor */ 517 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 518 /* wait for motor to spin up */ 519 delay(250000); 520 } else { 521 auxregbisc(AUXIO4C_FDS, 0); 522 } 523 fdc->sc_nstat = 0; 524 out_fdc(fdc, NE7CMD_RECAL); 525 out_fdc(fdc, drive); 526 /* wait for recalibrate */ 527 for (n = 0; n < 10000; n++) { 528 delay(1000); 529 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 530 /* wait a bit longer till device *really* is ready */ 531 delay(100000); 532 if (out_fdc(fdc, NE7CMD_SENSEI)) 533 break; 534 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 535 /* 536 * Got `invalid command'; we interpret it 537 * to mean that the re-calibrate hasn't in 538 * fact finished yet 539 */ 540 continue; 541 break; 542 } 543 } 544 n = fdc->sc_nstat; 545 #ifdef FD_DEBUG 546 if (fdc_debug) { 547 int i; 548 printf("fdprobe: %d stati:", n); 549 for (i = 0; i < n; i++) 550 printf(" 0x%x", fdc->sc_status[i]); 551 printf("\n"); 552 } 553 #endif 554 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 555 556 /* turn off motor */ 557 if (fdc->sc_flags & FDC_82077) { 558 /* deselect drive and turn motor off */ 559 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 560 } else { 561 auxregbisc(0, AUXIO4C_FDS); 562 } 563 564 return (ok); 565 } 566 567 /* 568 * Controller is working, and drive responded. Attach it. 569 */ 570 void 571 fdattach(parent, self, aux) 572 struct device *parent, *self; 573 void *aux; 574 { 575 struct fdc_softc *fdc = (void *)parent; 576 struct fd_softc *fd = (void *)self; 577 struct fdc_attach_args *fa = aux; 578 struct fd_type *type = fa->fa_deftype; 579 int drive = fa->fa_drive; 580 581 /* XXX Allow `flags' to override device type? */ 582 583 if (type) 584 printf(": %s %d cyl, %d head, %d sec\n", type->name, 585 type->cylinders, type->heads, type->sectrac); 586 else 587 printf(": density unknown\n"); 588 589 fd->sc_cylin = -1; 590 fd->sc_drive = drive; 591 fd->sc_deftype = type; 592 fdc->sc_fd[drive] = fd; 593 594 out_fdc(fdc, NE7CMD_SPECIFY); 595 out_fdc(fdc, type->steprate); 596 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 597 598 /* 599 * Initialize and attach the disk structure. 600 */ 601 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 602 fd->sc_dk.dk_driver = &fddkdriver; 603 disk_attach(&fd->sc_dk); 604 605 /* 606 * We're told if we're the boot device in fdcattach(). 607 */ 608 if (fa->fa_bootpath) 609 fa->fa_bootpath->dev = &fd->sc_dv; 610 611 /* 612 * Establish a mountroot_hook anyway in case we booted 613 * with RB_ASKNAME and get selected as the boot device. 614 */ 615 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 616 617 /* Make sure the drive motor gets turned off at shutdown time. */ 618 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 619 620 /* XXX Need to do some more fiddling with sc_dk. */ 621 dk_establish(&fd->sc_dk, &fd->sc_dv); 622 } 623 624 __inline struct fd_type * 625 fd_dev_to_type(fd, dev) 626 struct fd_softc *fd; 627 dev_t dev; 628 { 629 int type = FDTYPE(dev); 630 631 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 632 return (NULL); 633 return (type ? &fd_types[type - 1] : fd->sc_deftype); 634 } 635 636 void 637 fdstrategy(bp) 638 register struct buf *bp; /* IO operation to perform */ 639 { 640 struct fd_softc *fd; 641 int unit = FDUNIT(bp->b_dev); 642 int sz; 643 int s; 644 645 /* Valid unit, controller, and request? */ 646 if (unit >= fd_cd.cd_ndevs || 647 (fd = fd_cd.cd_devs[unit]) == 0 || 648 bp->b_blkno < 0 || 649 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 650 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 651 (bp->b_flags & B_FORMAT) == 0)) { 652 bp->b_error = EINVAL; 653 goto bad; 654 } 655 656 /* If it's a null transfer, return immediately. */ 657 if (bp->b_bcount == 0) 658 goto done; 659 660 sz = howmany(bp->b_bcount, DEV_BSIZE); 661 662 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 663 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 664 - bp->b_blkno; 665 if (sz == 0) { 666 /* If exactly at end of disk, return EOF. */ 667 bp->b_resid = bp->b_bcount; 668 goto done; 669 } 670 if (sz < 0) { 671 /* If past end of disk, return EINVAL. */ 672 bp->b_error = EINVAL; 673 goto bad; 674 } 675 /* Otherwise, truncate request. */ 676 bp->b_bcount = sz << DEV_BSHIFT; 677 } 678 679 bp->b_cylin = (bp->b_blkno * DEV_BSIZE) / 680 (FD_BSIZE(fd) * fd->sc_type->seccyl); 681 682 #ifdef FD_DEBUG 683 if (fdc_debug > 1) 684 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 685 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 686 #endif 687 688 /* Queue transfer on drive, activate drive and controller if idle. */ 689 s = splbio(); 690 disksort(&fd->sc_q, bp); 691 untimeout(fd_motor_off, fd); /* a good idea */ 692 if (!fd->sc_q.b_active) 693 fdstart(fd); 694 #ifdef DIAGNOSTIC 695 else { 696 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 697 if (fdc->sc_state == DEVIDLE) { 698 printf("fdstrategy: controller inactive\n"); 699 fdcstart(fdc); 700 } 701 } 702 #endif 703 splx(s); 704 return; 705 706 bad: 707 bp->b_flags |= B_ERROR; 708 done: 709 /* Toss transfer; we're done early. */ 710 biodone(bp); 711 } 712 713 void 714 fdstart(fd) 715 struct fd_softc *fd; 716 { 717 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 718 int active = fdc->sc_drives.tqh_first != 0; 719 720 /* Link into controller queue. */ 721 fd->sc_q.b_active = 1; 722 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 723 724 /* If controller not already active, start it. */ 725 if (!active) 726 fdcstart(fdc); 727 } 728 729 void 730 fdfinish(fd, bp) 731 struct fd_softc *fd; 732 struct buf *bp; 733 { 734 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 735 736 /* 737 * Move this drive to the end of the queue to give others a `fair' 738 * chance. We only force a switch if N operations are completed while 739 * another drive is waiting to be serviced, since there is a long motor 740 * startup delay whenever we switch. 741 */ 742 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 743 fd->sc_ops = 0; 744 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 745 if (bp->b_actf) { 746 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 747 } else 748 fd->sc_q.b_active = 0; 749 } 750 bp->b_resid = fd->sc_bcount; 751 fd->sc_skip = 0; 752 fd->sc_q.b_actf = bp->b_actf; 753 754 biodone(bp); 755 /* turn off motor 5s from now */ 756 timeout(fd_motor_off, fd, 5 * hz); 757 fdc->sc_state = DEVIDLE; 758 } 759 760 void 761 fdc_reset(fdc) 762 struct fdc_softc *fdc; 763 { 764 if (fdc->sc_flags & FDC_82077) { 765 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 766 } 767 768 *fdc->sc_reg_drs = DRS_RESET; 769 delay(10); 770 *fdc->sc_reg_drs = 0; 771 772 if (fdc->sc_flags & FDC_82077) { 773 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 774 } 775 #ifdef FD_DEBUG 776 if (fdc_debug) 777 printf("fdc reset\n"); 778 #endif 779 } 780 781 void 782 fd_set_motor(fdc) 783 struct fdc_softc *fdc; 784 { 785 struct fd_softc *fd; 786 u_char status; 787 int n; 788 789 if (fdc->sc_flags & FDC_82077) { 790 status = FDO_FRST | FDO_FDMAEN; 791 if ((fd = fdc->sc_drives.tqh_first) != NULL) 792 status |= fd->sc_drive; 793 794 for (n = 0; n < 4; n++) 795 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 796 status |= FDO_MOEN(n); 797 *fdc->sc_reg_dor = status; 798 } else { 799 int on = 0; 800 801 for (n = 0; n < 4; n++) 802 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 803 on = 1; 804 if (on) { 805 auxregbisc(AUXIO4C_FDS, 0); 806 } else { 807 auxregbisc(0, AUXIO4C_FDS); 808 } 809 } 810 } 811 812 void 813 fd_motor_off(arg) 814 void *arg; 815 { 816 struct fd_softc *fd = arg; 817 int s; 818 819 s = splbio(); 820 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 821 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 822 splx(s); 823 } 824 825 void 826 fd_motor_on(arg) 827 void *arg; 828 { 829 struct fd_softc *fd = arg; 830 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 831 int s; 832 833 s = splbio(); 834 fd->sc_flags &= ~FD_MOTOR_WAIT; 835 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 836 (void) fdcstate(fdc); 837 splx(s); 838 } 839 840 int 841 fdcresult(fdc) 842 struct fdc_softc *fdc; 843 { 844 u_char i; 845 int j = 100000, 846 n = 0; 847 848 for (; j; j--) { 849 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 850 if (i == NE7_RQM) 851 return (fdc->sc_nstat = n); 852 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 853 if (n >= sizeof(fdc->sc_status)) { 854 log(LOG_ERR, "fdcresult: overrun\n"); 855 return (-1); 856 } 857 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 858 } else 859 delay(10); 860 } 861 log(LOG_ERR, "fdcresult: timeout\n"); 862 return (fdc->sc_nstat = -1); 863 } 864 865 int 866 out_fdc(fdc, x) 867 struct fdc_softc *fdc; 868 u_char x; 869 { 870 int i = 100000; 871 872 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 873 delay(1); 874 if (i <= 0) 875 return (-1); 876 877 *fdc->sc_reg_fifo = x; 878 return (0); 879 } 880 881 int 882 fdopen(dev, flags, fmt, p) 883 dev_t dev; 884 int flags, fmt; 885 struct proc *p; 886 { 887 int unit, pmask; 888 struct fd_softc *fd; 889 struct fd_type *type; 890 891 unit = FDUNIT(dev); 892 if (unit >= fd_cd.cd_ndevs) 893 return (ENXIO); 894 fd = fd_cd.cd_devs[unit]; 895 if (fd == 0) 896 return (ENXIO); 897 type = fd_dev_to_type(fd, dev); 898 if (type == NULL) 899 return (ENXIO); 900 901 if ((fd->sc_flags & FD_OPEN) != 0 && 902 fd->sc_type != type) 903 return (EBUSY); 904 905 fd->sc_type = type; 906 fd->sc_cylin = -1; 907 fd->sc_flags |= FD_OPEN; 908 909 /* 910 * Only update the disklabel if we're not open anywhere else. 911 */ 912 if (fd->sc_dk.dk_openmask == 0) 913 fdgetdisklabel(dev); 914 915 pmask = (1 << DISKPART(dev)); 916 917 switch (fmt) { 918 case S_IFCHR: 919 fd->sc_dk.dk_copenmask |= pmask; 920 break; 921 922 case S_IFBLK: 923 fd->sc_dk.dk_bopenmask |= pmask; 924 break; 925 } 926 fd->sc_dk.dk_openmask = 927 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 928 929 return (0); 930 } 931 932 int 933 fdclose(dev, flags, fmt, p) 934 dev_t dev; 935 int flags, fmt; 936 struct proc *p; 937 { 938 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 939 int pmask = (1 << DISKPART(dev)); 940 941 fd->sc_flags &= ~FD_OPEN; 942 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 943 944 switch (fmt) { 945 case S_IFCHR: 946 fd->sc_dk.dk_copenmask &= ~pmask; 947 break; 948 949 case S_IFBLK: 950 fd->sc_dk.dk_bopenmask &= ~pmask; 951 break; 952 } 953 fd->sc_dk.dk_openmask = 954 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 955 956 return (0); 957 } 958 959 int 960 fdread(dev, uio, flag) 961 dev_t dev; 962 struct uio *uio; 963 int flag; 964 { 965 966 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 967 } 968 969 int 970 fdwrite(dev, uio, flag) 971 dev_t dev; 972 struct uio *uio; 973 int flag; 974 { 975 976 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 977 } 978 979 void 980 fdcstart(fdc) 981 struct fdc_softc *fdc; 982 { 983 984 #ifdef DIAGNOSTIC 985 /* only got here if controller's drive queue was inactive; should 986 be in idle state */ 987 if (fdc->sc_state != DEVIDLE) { 988 printf("fdcstart: not idle\n"); 989 return; 990 } 991 #endif 992 (void) fdcstate(fdc); 993 } 994 995 void 996 fdcstatus(dv, n, s) 997 struct device *dv; 998 int n; 999 char *s; 1000 { 1001 struct fdc_softc *fdc = (void *)dv->dv_parent; 1002 char bits[64]; 1003 #if 0 1004 /* 1005 * A 82072 seems to return <invalid command> on 1006 * gratuitous Sense Interrupt commands. 1007 */ 1008 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1009 out_fdc(fdc, NE7CMD_SENSEI); 1010 (void) fdcresult(fdc); 1011 n = 2; 1012 } 1013 #endif 1014 1015 /* Just print last status */ 1016 n = fdc->sc_nstat; 1017 1018 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1019 1020 switch (n) { 1021 case 0: 1022 printf("\n"); 1023 break; 1024 case 2: 1025 printf(" (st0 %s cyl %d)\n", 1026 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1027 bits, sizeof(bits)), fdc->sc_status[1]); 1028 break; 1029 case 7: 1030 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1031 NE7_ST0BITS, bits, sizeof(bits))); 1032 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1033 NE7_ST1BITS, bits, sizeof(bits))); 1034 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1035 NE7_ST2BITS, bits, sizeof(bits))); 1036 printf(" cyl %d head %d sec %d)\n", 1037 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1038 break; 1039 #ifdef DIAGNOSTIC 1040 default: 1041 printf(" fdcstatus: weird size: %d\n", n); 1042 break; 1043 #endif 1044 } 1045 } 1046 1047 void 1048 fdctimeout(arg) 1049 void *arg; 1050 { 1051 struct fdc_softc *fdc = arg; 1052 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1053 int s; 1054 1055 s = splbio(); 1056 fdcstatus(&fd->sc_dv, 0, "timeout"); 1057 1058 if (fd->sc_q.b_actf) 1059 fdc->sc_state++; 1060 else 1061 fdc->sc_state = DEVIDLE; 1062 1063 (void) fdcstate(fdc); 1064 splx(s); 1065 } 1066 1067 void 1068 fdcpseudointr(arg) 1069 void *arg; 1070 { 1071 struct fdc_softc *fdc = arg; 1072 int s; 1073 1074 /* Just ensure it has the right spl. */ 1075 s = splbio(); 1076 (void) fdcstate(fdc); 1077 splx(s); 1078 } 1079 1080 1081 #ifdef FDC_C_HANDLER 1082 /* 1083 * hardware interrupt entry point: must be converted to `fast' 1084 * (in-window) handler. 1085 */ 1086 int 1087 fdchwintr(fdc) 1088 struct fdc_softc *fdc; 1089 { 1090 1091 switch (fdc->sc_istate) { 1092 case ISTATE_IDLE: 1093 return (0); 1094 case ISTATE_SENSEI: 1095 out_fdc(fdc, NE7CMD_SENSEI); 1096 fdcresult(fdc); 1097 fdc->sc_istate = ISTATE_IDLE; 1098 FD_SET_SWINTR; 1099 return (1); 1100 case ISTATE_SPURIOUS: 1101 fdcresult(fdc); 1102 fdc->sc_istate = ISTATE_SPURIOUS; 1103 printf("fdc: stray hard interrupt... "); 1104 FD_SET_SWINTR; 1105 return (1); 1106 case ISTATE_DMA: 1107 break; 1108 default: 1109 printf("fdc: goofed ...\n"); 1110 return (1); 1111 } 1112 1113 for (;;) { 1114 register int msr; 1115 1116 msr = *fdc->sc_reg_msr; 1117 1118 if ((msr & NE7_RQM) == 0) 1119 break; 1120 1121 if ((msr & NE7_NDM) == 0) { 1122 fdcresult(fdc); 1123 fdc->sc_istate = ISTATE_IDLE; 1124 ienab_bis(IE_FDSOFT); 1125 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1126 break; 1127 } 1128 1129 if (msr & NE7_DIO) { 1130 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1131 } else { 1132 *fdc->sc_reg_fifo = *fdc->sc_data++; 1133 } 1134 if (--fdc->sc_tc == 0) { 1135 fdc->sc_istate = ISTATE_DONE; 1136 FTC_FLIP; 1137 fdcresult(fdc); 1138 FD_SET_SWINTR; 1139 break; 1140 } 1141 } 1142 return (1); 1143 } 1144 #endif 1145 1146 int 1147 fdcswintr(fdc) 1148 struct fdc_softc *fdc; 1149 { 1150 int s; 1151 1152 if (fdc->sc_istate != ISTATE_DONE) 1153 return (0); 1154 1155 fdc->sc_istate = ISTATE_IDLE; 1156 s = splbio(); 1157 fdcstate(fdc); 1158 splx(s); 1159 return (1); 1160 } 1161 1162 int 1163 fdcstate(fdc) 1164 struct fdc_softc *fdc; 1165 { 1166 #define st0 fdc->sc_status[0] 1167 #define st1 fdc->sc_status[1] 1168 #define cyl fdc->sc_status[1] 1169 #define OUT_FDC(fdc, c, s) \ 1170 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1171 1172 struct fd_softc *fd; 1173 struct buf *bp; 1174 int read, head, sec, nblks; 1175 struct fd_type *type; 1176 struct ne7_fd_formb *finfo = NULL; 1177 1178 1179 if (fdc->sc_istate != ISTATE_IDLE) { 1180 /* Trouble... */ 1181 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1182 fdc->sc_state, fdc->sc_istate); 1183 fdc->sc_istate = ISTATE_IDLE; 1184 if (fdc->sc_state == RESETCOMPLETE || 1185 fdc->sc_state == RESETTIMEDOUT) { 1186 panic("fdcintr: spurious interrupt can't be cleared"); 1187 } 1188 goto doreset; 1189 } 1190 1191 loop: 1192 /* Is there a drive for the controller to do a transfer with? */ 1193 fd = fdc->sc_drives.tqh_first; 1194 if (fd == NULL) { 1195 fdc->sc_state = DEVIDLE; 1196 return (0); 1197 } 1198 1199 /* Is there a transfer to this drive? If not, deactivate drive. */ 1200 bp = fd->sc_q.b_actf; 1201 if (bp == NULL) { 1202 fd->sc_ops = 0; 1203 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1204 fd->sc_q.b_active = 0; 1205 goto loop; 1206 } 1207 1208 if (bp->b_flags & B_FORMAT) 1209 finfo = (struct ne7_fd_formb *)bp->b_data; 1210 1211 switch (fdc->sc_state) { 1212 case DEVIDLE: 1213 fdc->sc_errors = 0; 1214 fd->sc_skip = 0; 1215 fd->sc_bcount = bp->b_bcount; 1216 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1217 untimeout(fd_motor_off, fd); 1218 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1219 fdc->sc_state = MOTORWAIT; 1220 return (1); 1221 } 1222 if ((fd->sc_flags & FD_MOTOR) == 0) { 1223 /* Turn on the motor, being careful about pairing. */ 1224 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1225 if (ofd && ofd->sc_flags & FD_MOTOR) { 1226 untimeout(fd_motor_off, ofd); 1227 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1228 } 1229 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1230 fd_set_motor(fdc); 1231 fdc->sc_state = MOTORWAIT; 1232 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1233 /* Allow .25s for motor to stabilize. */ 1234 timeout(fd_motor_on, fd, hz / 4); 1235 } else { 1236 fd->sc_flags &= ~FD_MOTOR_WAIT; 1237 goto loop; 1238 } 1239 return (1); 1240 } 1241 /* Make sure the right drive is selected. */ 1242 fd_set_motor(fdc); 1243 1244 /*FALLTHROUGH*/ 1245 case DOSEEK: 1246 doseek: 1247 if ((fdc->sc_flags & FDC_EIS) && 1248 (bp->b_flags & B_FORMAT) == 0) { 1249 fd->sc_cylin = bp->b_cylin; 1250 /* We use implied seek */ 1251 goto doio; 1252 } 1253 1254 if (fd->sc_cylin == bp->b_cylin) 1255 goto doio; 1256 1257 /* specify command */ 1258 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1259 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1260 /* XXX head load time == 6ms */ 1261 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1262 1263 fdc->sc_istate = ISTATE_SENSEI; 1264 /* seek function */ 1265 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1266 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1267 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1268 1269 fd->sc_cylin = -1; 1270 fdc->sc_state = SEEKWAIT; 1271 fdc->sc_nstat = 0; 1272 1273 fd->sc_dk.dk_seek++; 1274 disk_busy(&fd->sc_dk); 1275 1276 timeout(fdctimeout, fdc, 4 * hz); 1277 return (1); 1278 1279 case DOIO: 1280 doio: 1281 if (finfo != NULL) 1282 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1283 (char *)finfo; 1284 type = fd->sc_type; 1285 sec = fd->sc_blkno % type->seccyl; 1286 nblks = type->seccyl - sec; 1287 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1288 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1289 fd->sc_nblks = nblks; 1290 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1291 head = sec / type->sectrac; 1292 sec -= head * type->sectrac; 1293 #ifdef DIAGNOSTIC 1294 {int block; 1295 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1296 if (block != fd->sc_blkno) { 1297 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1298 #ifdef DDB 1299 Debugger(); 1300 #endif 1301 }} 1302 #endif 1303 read = bp->b_flags & B_READ; 1304 1305 /* Setup for pseudo DMA */ 1306 fdc->sc_data = bp->b_data + fd->sc_skip; 1307 fdc->sc_tc = fd->sc_nbytes; 1308 1309 *fdc->sc_reg_drs = type->rate; 1310 #ifdef FD_DEBUG 1311 if (fdc_debug > 1) 1312 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1313 read ? "read" : "write", fd->sc_drive, 1314 fd->sc_cylin, head, sec, nblks); 1315 #endif 1316 fdc->sc_state = IOCOMPLETE; 1317 fdc->sc_istate = ISTATE_DMA; 1318 fdc->sc_nstat = 0; 1319 if (finfo != NULL) { 1320 /* formatting */ 1321 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1322 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1323 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1324 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1325 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1326 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1327 } else { 1328 if (read) 1329 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1330 else 1331 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1332 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1333 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1334 OUT_FDC(fdc, head, IOTIMEDOUT); 1335 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1336 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1337 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1338 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1339 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1340 } 1341 1342 disk_busy(&fd->sc_dk); 1343 1344 /* allow 2 seconds for operation */ 1345 timeout(fdctimeout, fdc, 2 * hz); 1346 return (1); /* will return later */ 1347 1348 case SEEKWAIT: 1349 untimeout(fdctimeout, fdc); 1350 fdc->sc_state = SEEKCOMPLETE; 1351 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1352 /* allow 1/50 second for heads to settle */ 1353 timeout(fdcpseudointr, fdc, hz / 50); 1354 return (1); /* will return later */ 1355 } 1356 /*FALLTHROUGH*/ 1357 case SEEKCOMPLETE: 1358 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1359 1360 /* Make sure seek really happened. */ 1361 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1362 cyl != bp->b_cylin * fd->sc_type->step) { 1363 #ifdef FD_DEBUG 1364 if (fdc_debug) 1365 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1366 #endif 1367 fdcretry(fdc); 1368 goto loop; 1369 } 1370 fd->sc_cylin = bp->b_cylin; 1371 goto doio; 1372 1373 case IOTIMEDOUT: 1374 FTC_FLIP; 1375 (void)fdcresult(fdc); 1376 /*FALLTHROUGH*/ 1377 case SEEKTIMEDOUT: 1378 case RECALTIMEDOUT: 1379 case RESETTIMEDOUT: 1380 fdcretry(fdc); 1381 goto loop; 1382 1383 case IOCOMPLETE: /* IO DONE, post-analyze */ 1384 untimeout(fdctimeout, fdc); 1385 1386 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1387 1388 if (fdc->sc_nstat != 7 || st1 != 0 || 1389 ((st0 & 0xf8) != 0 && 1390 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1391 #ifdef FD_DEBUG 1392 if (fdc_debug) { 1393 fdcstatus(&fd->sc_dv, 7, 1394 bp->b_flags & B_READ 1395 ? "read failed" : "write failed"); 1396 printf("blkno %d nblks %d nstat %d tc %d\n", 1397 fd->sc_blkno, fd->sc_nblks, 1398 fdc->sc_nstat, fdc->sc_tc); 1399 } 1400 #endif 1401 if (fdc->sc_nstat == 7 && 1402 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1403 1404 /* 1405 * Silently retry overruns if no other 1406 * error bit is set. Adjust threshold. 1407 */ 1408 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1409 if (thr < 15) { 1410 thr++; 1411 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1412 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1413 #ifdef FD_DEBUG 1414 if (fdc_debug) 1415 printf("fdc: %d -> threshold\n", thr); 1416 #endif 1417 fdconf(fdc); 1418 fdc->sc_overruns = 0; 1419 } 1420 if (++fdc->sc_overruns < 3) { 1421 fdc->sc_state = DOIO; 1422 goto loop; 1423 } 1424 } 1425 fdcretry(fdc); 1426 goto loop; 1427 } 1428 if (fdc->sc_errors) { 1429 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1430 fd->sc_skip / FD_BSIZE(fd), 1431 (struct disklabel *)NULL); 1432 printf("\n"); 1433 fdc->sc_errors = 0; 1434 } else { 1435 if (--fdc->sc_overruns < -20) { 1436 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1437 if (thr > 0) { 1438 thr--; 1439 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1440 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1441 #ifdef FD_DEBUG 1442 if (fdc_debug) 1443 printf("fdc: %d -> threshold\n", thr); 1444 #endif 1445 fdconf(fdc); 1446 } 1447 fdc->sc_overruns = 0; 1448 } 1449 } 1450 fd->sc_blkno += fd->sc_nblks; 1451 fd->sc_skip += fd->sc_nbytes; 1452 fd->sc_bcount -= fd->sc_nbytes; 1453 if (finfo == NULL && fd->sc_bcount > 0) { 1454 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1455 goto doseek; 1456 } 1457 fdfinish(fd, bp); 1458 goto loop; 1459 1460 case DORESET: 1461 doreset: 1462 /* try a reset, keep motor on */ 1463 fd_set_motor(fdc); 1464 delay(100); 1465 fdc_reset(fdc); 1466 fdc->sc_nstat = 0; 1467 fdc->sc_istate = ISTATE_SENSEI; 1468 fdc->sc_state = RESETCOMPLETE; 1469 timeout(fdctimeout, fdc, hz / 2); 1470 return (1); /* will return later */ 1471 1472 case RESETCOMPLETE: 1473 untimeout(fdctimeout, fdc); 1474 fdconf(fdc); 1475 1476 /* fall through */ 1477 case DORECAL: 1478 fdc->sc_state = RECALWAIT; 1479 fdc->sc_istate = ISTATE_SENSEI; 1480 fdc->sc_nstat = 0; 1481 /* recalibrate function */ 1482 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1483 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1484 timeout(fdctimeout, fdc, 5 * hz); 1485 return (1); /* will return later */ 1486 1487 case RECALWAIT: 1488 untimeout(fdctimeout, fdc); 1489 fdc->sc_state = RECALCOMPLETE; 1490 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1491 /* allow 1/30 second for heads to settle */ 1492 timeout(fdcpseudointr, fdc, hz / 30); 1493 return (1); /* will return later */ 1494 } 1495 1496 case RECALCOMPLETE: 1497 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1498 #ifdef FD_DEBUG 1499 if (fdc_debug) 1500 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1501 #endif 1502 fdcretry(fdc); 1503 goto loop; 1504 } 1505 fd->sc_cylin = 0; 1506 goto doseek; 1507 1508 case MOTORWAIT: 1509 if (fd->sc_flags & FD_MOTOR_WAIT) 1510 return (1); /* time's not up yet */ 1511 goto doseek; 1512 1513 default: 1514 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1515 return (1); 1516 } 1517 #ifdef DIAGNOSTIC 1518 panic("fdcintr: impossible"); 1519 #endif 1520 #undef st0 1521 #undef st1 1522 #undef cyl 1523 } 1524 1525 void 1526 fdcretry(fdc) 1527 struct fdc_softc *fdc; 1528 { 1529 char bits[64]; 1530 struct fd_softc *fd; 1531 struct buf *bp; 1532 1533 fd = fdc->sc_drives.tqh_first; 1534 bp = fd->sc_q.b_actf; 1535 1536 fdc->sc_overruns = 0; 1537 if (fd->sc_opts & FDOPT_NORETRY) 1538 goto fail; 1539 1540 switch (fdc->sc_errors) { 1541 case 0: 1542 /* try again */ 1543 fdc->sc_state = 1544 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1545 break; 1546 1547 case 1: case 2: case 3: 1548 /* didn't work; try recalibrating */ 1549 fdc->sc_state = DORECAL; 1550 break; 1551 1552 case 4: 1553 /* still no go; reset the bastard */ 1554 fdc->sc_state = DORESET; 1555 break; 1556 1557 default: 1558 fail: 1559 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1560 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1561 fd->sc_skip / FD_BSIZE(fd), 1562 (struct disklabel *)NULL); 1563 1564 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1565 NE7_ST0BITS, bits, sizeof(bits))); 1566 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1567 NE7_ST1BITS, bits, sizeof(bits))); 1568 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1569 NE7_ST2BITS, bits, sizeof(bits))); 1570 printf(" cyl %d head %d sec %d)\n", 1571 fdc->sc_status[3], fdc->sc_status[4], 1572 fdc->sc_status[5]); 1573 } 1574 1575 bp->b_flags |= B_ERROR; 1576 bp->b_error = EIO; 1577 fdfinish(fd, bp); 1578 } 1579 fdc->sc_errors++; 1580 } 1581 1582 int 1583 fdsize(dev) 1584 dev_t dev; 1585 { 1586 1587 /* Swapping to floppies would not make sense. */ 1588 return (-1); 1589 } 1590 1591 int 1592 fddump(dev, blkno, va, size) 1593 dev_t dev; 1594 daddr_t blkno; 1595 caddr_t va; 1596 size_t size; 1597 { 1598 1599 /* Not implemented. */ 1600 return (EINVAL); 1601 } 1602 1603 int 1604 fdioctl(dev, cmd, addr, flag, p) 1605 dev_t dev; 1606 u_long cmd; 1607 caddr_t addr; 1608 int flag; 1609 struct proc *p; 1610 { 1611 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1612 struct fdformat_parms *form_parms; 1613 struct fdformat_cmd *form_cmd; 1614 struct ne7_fd_formb fd_formb; 1615 int il[FD_MAX_NSEC + 1]; 1616 int i, j; 1617 int error; 1618 1619 switch (cmd) { 1620 case DIOCGDINFO: 1621 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1622 return 0; 1623 1624 case DIOCWLABEL: 1625 if ((flag & FWRITE) == 0) 1626 return EBADF; 1627 /* XXX do something */ 1628 return (0); 1629 1630 case DIOCWDINFO: 1631 if ((flag & FWRITE) == 0) 1632 return (EBADF); 1633 1634 error = setdisklabel(fd->sc_dk.dk_label, 1635 (struct disklabel *)addr, 0, 1636 fd->sc_dk.dk_cpulabel); 1637 if (error) 1638 return (error); 1639 1640 error = writedisklabel(dev, fdstrategy, 1641 fd->sc_dk.dk_label, 1642 fd->sc_dk.dk_cpulabel); 1643 return (error); 1644 1645 case DIOCLOCK: 1646 /* 1647 * Nothing to do here, really. 1648 */ 1649 return (0); 1650 1651 case DIOCEJECT: 1652 fd_do_eject(fd); 1653 return (0); 1654 1655 case FDIOCGETFORMAT: 1656 form_parms = (struct fdformat_parms *)addr; 1657 form_parms->fdformat_version = FDFORMAT_VERSION; 1658 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1659 form_parms->ncyl = fd->sc_type->cylinders; 1660 form_parms->nspt = fd->sc_type->sectrac; 1661 form_parms->ntrk = fd->sc_type->heads; 1662 form_parms->stepspercyl = fd->sc_type->step; 1663 form_parms->gaplen = fd->sc_type->gap2; 1664 form_parms->fillbyte = fd->sc_type->fillbyte; 1665 form_parms->interleave = fd->sc_type->interleave; 1666 switch (fd->sc_type->rate) { 1667 case FDC_500KBPS: 1668 form_parms->xfer_rate = 500 * 1024; 1669 break; 1670 case FDC_300KBPS: 1671 form_parms->xfer_rate = 300 * 1024; 1672 break; 1673 case FDC_250KBPS: 1674 form_parms->xfer_rate = 250 * 1024; 1675 break; 1676 default: 1677 return (EINVAL); 1678 } 1679 return (0); 1680 1681 case FDIOCSETFORMAT: 1682 if ((flag & FWRITE) == 0) 1683 return (EBADF); /* must be opened for writing */ 1684 1685 form_parms = (struct fdformat_parms *)addr; 1686 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1687 return (EINVAL);/* wrong version of formatting prog */ 1688 1689 i = form_parms->nbps >> 7; 1690 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1691 i & ~(1 << (ffs(i)-1))) 1692 /* not a power-of-two multiple of 128 */ 1693 return (EINVAL); 1694 1695 switch (form_parms->xfer_rate) { 1696 case 500 * 1024: 1697 fd->sc_type->rate = FDC_500KBPS; 1698 break; 1699 case 300 * 1024: 1700 fd->sc_type->rate = FDC_300KBPS; 1701 break; 1702 case 250 * 1024: 1703 fd->sc_type->rate = FDC_250KBPS; 1704 break; 1705 default: 1706 return (EINVAL); 1707 } 1708 1709 if (form_parms->nspt > FD_MAX_NSEC || 1710 form_parms->fillbyte > 0xff || 1711 form_parms->interleave > 0xff) 1712 return EINVAL; 1713 fd->sc_type->sectrac = form_parms->nspt; 1714 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1715 return EINVAL; 1716 fd->sc_type->heads = form_parms->ntrk; 1717 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1718 fd->sc_type->secsize = ffs(i)-1; 1719 fd->sc_type->gap2 = form_parms->gaplen; 1720 fd->sc_type->cylinders = form_parms->ncyl; 1721 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1722 form_parms->nbps / DEV_BSIZE; 1723 fd->sc_type->step = form_parms->stepspercyl; 1724 fd->sc_type->fillbyte = form_parms->fillbyte; 1725 fd->sc_type->interleave = form_parms->interleave; 1726 return (0); 1727 1728 case FDIOCFORMAT_TRACK: 1729 if((flag & FWRITE) == 0) 1730 /* must be opened for writing */ 1731 return (EBADF); 1732 form_cmd = (struct fdformat_cmd *)addr; 1733 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1734 /* wrong version of formatting prog */ 1735 return (EINVAL); 1736 1737 if (form_cmd->head >= fd->sc_type->heads || 1738 form_cmd->cylinder >= fd->sc_type->cylinders) { 1739 return (EINVAL); 1740 } 1741 1742 fd_formb.head = form_cmd->head; 1743 fd_formb.cyl = form_cmd->cylinder; 1744 fd_formb.transfer_rate = fd->sc_type->rate; 1745 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1746 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1747 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1748 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1749 1750 bzero(il, sizeof il); 1751 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1752 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1753 j++; 1754 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1755 j += fd->sc_type->interleave; 1756 } 1757 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1758 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1759 fd_formb.fd_formb_headno(i) = form_cmd->head; 1760 fd_formb.fd_formb_secno(i) = il[i+1]; 1761 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1762 } 1763 1764 return fdformat(dev, &fd_formb, p); 1765 1766 case FDIOCGETOPTS: /* get drive options */ 1767 *(int *)addr = fd->sc_opts; 1768 return (0); 1769 1770 case FDIOCSETOPTS: /* set drive options */ 1771 fd->sc_opts = *(int *)addr; 1772 return (0); 1773 1774 #ifdef DEBUG 1775 case _IO('f', 100): 1776 { 1777 int i; 1778 struct fdc_softc *fdc = (struct fdc_softc *) 1779 fd->sc_dv.dv_parent; 1780 1781 out_fdc(fdc, NE7CMD_DUMPREG); 1782 fdcresult(fdc); 1783 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1784 for (i = 0; i < fdc->sc_nstat; i++) 1785 printf(" 0x%x", fdc->sc_status[i]); 1786 printf(">\n"); 1787 } 1788 1789 return (0); 1790 case _IOW('f', 101, int): 1791 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1792 ~CFG_THRHLD_MASK; 1793 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1794 (*(int *)addr & CFG_THRHLD_MASK); 1795 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1796 return (0); 1797 case _IO('f', 102): 1798 { 1799 int i; 1800 struct fdc_softc *fdc = (struct fdc_softc *) 1801 fd->sc_dv.dv_parent; 1802 out_fdc(fdc, NE7CMD_SENSEI); 1803 fdcresult(fdc); 1804 printf("sensei(%d regs): <", fdc->sc_nstat); 1805 for (i=0; i< fdc->sc_nstat; i++) 1806 printf(" 0x%x", fdc->sc_status[i]); 1807 } 1808 printf(">\n"); 1809 return (0); 1810 #endif 1811 default: 1812 return (ENOTTY); 1813 } 1814 1815 #ifdef DIAGNOSTIC 1816 panic("fdioctl: impossible"); 1817 #endif 1818 } 1819 1820 int 1821 fdformat(dev, finfo, p) 1822 dev_t dev; 1823 struct ne7_fd_formb *finfo; 1824 struct proc *p; 1825 { 1826 int rv = 0, s; 1827 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1828 struct fd_type *type = fd->sc_type; 1829 struct buf *bp; 1830 1831 /* set up a buffer header for fdstrategy() */ 1832 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1833 if (bp == 0) 1834 return (ENOBUFS); 1835 1836 PHOLD(p); 1837 bzero((void *)bp, sizeof(struct buf)); 1838 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1839 bp->b_proc = p; 1840 bp->b_dev = dev; 1841 1842 /* 1843 * Calculate a fake blkno, so fdstrategy() would initiate a 1844 * seek to the requested cylinder. 1845 */ 1846 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1847 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1848 / DEV_BSIZE; 1849 1850 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1851 bp->b_data = (caddr_t)finfo; 1852 1853 #ifdef FD_DEBUG 1854 if (fdc_debug) 1855 printf("fdformat: blkno 0x%x count %ld\n", 1856 bp->b_blkno, bp->b_bcount); 1857 #endif 1858 1859 /* now do the format */ 1860 fdstrategy(bp); 1861 1862 /* ...and wait for it to complete */ 1863 s = splbio(); 1864 while (!(bp->b_flags & B_DONE)) { 1865 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1866 if (rv == EWOULDBLOCK) 1867 break; 1868 } 1869 splx(s); 1870 1871 if (rv == EWOULDBLOCK) { 1872 /* timed out */ 1873 rv = EIO; 1874 biodone(bp); 1875 } 1876 if (bp->b_flags & B_ERROR) { 1877 rv = bp->b_error; 1878 } 1879 PRELE(p); 1880 free(bp, M_TEMP); 1881 return (rv); 1882 } 1883 1884 void 1885 fdgetdisklabel(dev) 1886 dev_t dev; 1887 { 1888 int unit = FDUNIT(dev), i; 1889 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1890 struct disklabel *lp = fd->sc_dk.dk_label; 1891 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1892 1893 bzero(lp, sizeof(struct disklabel)); 1894 bzero(lp, sizeof(struct cpu_disklabel)); 1895 1896 lp->d_type = DTYPE_FLOPPY; 1897 lp->d_secsize = FD_BSIZE(fd); 1898 lp->d_secpercyl = fd->sc_type->seccyl; 1899 lp->d_nsectors = fd->sc_type->sectrac; 1900 lp->d_ncylinders = fd->sc_type->cylinders; 1901 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1902 lp->d_rpm = 3600; /* XXX like it matters... */ 1903 1904 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1905 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1906 lp->d_interleave = 1; 1907 1908 lp->d_partitions[RAW_PART].p_offset = 0; 1909 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1910 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1911 lp->d_npartitions = RAW_PART + 1; 1912 1913 lp->d_magic = DISKMAGIC; 1914 lp->d_magic2 = DISKMAGIC; 1915 lp->d_checksum = dkcksum(lp); 1916 1917 /* 1918 * Call the generic disklabel extraction routine. If there's 1919 * not a label there, fake it. 1920 */ 1921 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1922 strncpy(lp->d_packname, "default label", 1923 sizeof(lp->d_packname)); 1924 /* 1925 * Reset the partition info; it might have gotten 1926 * trashed in readdisklabel(). 1927 * 1928 * XXX Why do we have to do this? readdisklabel() 1929 * should be safe... 1930 */ 1931 for (i = 0; i < MAXPARTITIONS; ++i) { 1932 lp->d_partitions[i].p_offset = 0; 1933 if (i == RAW_PART) { 1934 lp->d_partitions[i].p_size = 1935 lp->d_secpercyl * lp->d_ncylinders; 1936 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1937 } else { 1938 lp->d_partitions[i].p_size = 0; 1939 lp->d_partitions[i].p_fstype = FS_UNUSED; 1940 } 1941 } 1942 lp->d_npartitions = RAW_PART + 1; 1943 } 1944 } 1945 1946 void 1947 fd_do_eject(fd) 1948 struct fd_softc *fd; 1949 { 1950 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1951 1952 if (CPU_ISSUN4C) { 1953 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 1954 delay(10); 1955 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 1956 return; 1957 } 1958 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 1959 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 1960 *fdc->sc_reg_dor = dor | FDO_EJ; 1961 delay(10); 1962 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 1963 return; 1964 } 1965 } 1966 1967 #ifdef MEMORY_DISK_HOOKS 1968 int fd_read_md_image __P((size_t *, caddr_t *)); 1969 #endif 1970 1971 /* ARGSUSED */ 1972 void 1973 fd_mountroot_hook(dev) 1974 struct device *dev; 1975 { 1976 int c; 1977 1978 fd_do_eject((struct fd_softc *)dev); 1979 printf("Insert filesystem floppy and press return."); 1980 for (;;) { 1981 c = cngetc(); 1982 if ((c == '\r') || (c == '\n')) { 1983 printf("\n"); 1984 break; 1985 } 1986 } 1987 #ifdef MEMORY_DISK_HOOKS 1988 { 1989 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1990 md_read_image = fd_read_md_image; 1991 } 1992 #endif 1993 } 1994 1995 #ifdef MEMORY_DISK_HOOKS 1996 1997 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 1998 1999 int 2000 fd_read_md_image(sizep, addrp) 2001 size_t *sizep; 2002 caddr_t *addrp; 2003 { 2004 struct buf buf, *bp = &buf; 2005 dev_t dev; 2006 off_t offset; 2007 caddr_t addr; 2008 2009 dev = makedev(54,0); /* XXX */ 2010 2011 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2012 *addrp = addr; 2013 2014 if (fdopen(dev, 0, S_IFCHR, NULL)) 2015 panic("fd: mountroot: fdopen"); 2016 2017 offset = 0; 2018 2019 for (;;) { 2020 bp->b_dev = dev; 2021 bp->b_error = 0; 2022 bp->b_resid = 0; 2023 bp->b_proc = NULL; 2024 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2025 bp->b_blkno = btodb(offset); 2026 bp->b_bcount = DEV_BSIZE; 2027 bp->b_data = addr; 2028 fdstrategy(bp); 2029 while ((bp->b_flags & B_DONE) == 0) { 2030 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2031 } 2032 if (bp->b_error) 2033 panic("fd: mountroot: fdread error %d", bp->b_error); 2034 2035 if (bp->b_resid != 0) 2036 break; 2037 2038 addr += DEV_BSIZE; 2039 offset += DEV_BSIZE; 2040 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2041 break; 2042 } 2043 (void)fdclose(dev, 0, S_IFCHR, NULL); 2044 *sizep = offset; 2045 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2046 return (0); 2047 } 2048 #endif 2049
Indexes created Fri Oct 03 02:09:57 GMT 2025