fd.c revision 1.54
1 /* $NetBSD: fd.c,v 1.54 1997/10/19 23:29:47 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles Hannum. 5 * Copyright (c) 1995 Paul Kranenburg. 6 * Copyright (c) 1990 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Don Ahn. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)fd.c 7.4 (Berkeley) 5/25/91 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/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 struct cfdriver fdc_cd = { 145 NULL, "fdc", DV_DULL 146 }; 147 148 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 149 150 /* 151 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 152 * we tell them apart. 153 */ 154 struct fd_type { 155 int sectrac; /* sectors per track */ 156 int heads; /* number of heads */ 157 int seccyl; /* sectors per cylinder */ 158 int secsize; /* size code for sectors */ 159 int datalen; /* data len when secsize = 0 */ 160 int steprate; /* step rate and head unload time */ 161 int gap1; /* gap len between sectors */ 162 int gap2; /* formatting gap */ 163 int cylinders; /* total num of cylinders */ 164 int size; /* size of disk in sectors */ 165 int step; /* steps per cylinder */ 166 int rate; /* transfer speed code */ 167 int fillbyte; /* format fill byte */ 168 int interleave; /* interleave factor (formatting) */ 169 char *name; 170 }; 171 172 /* The order of entries in the following table is important -- BEWARE! */ 173 struct fd_type fd_types[] = { 174 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 175 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 176 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 177 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 178 }; 179 180 /* software state, per disk (with up to 4 disks per ctlr) */ 181 struct fd_softc { 182 struct device sc_dv; /* generic device info */ 183 struct disk sc_dk; /* generic disk info */ 184 185 struct fd_type *sc_deftype; /* default type descriptor */ 186 struct fd_type *sc_type; /* current type descriptor */ 187 188 daddr_t sc_blkno; /* starting block number */ 189 int sc_bcount; /* byte count left */ 190 int sc_skip; /* bytes already transferred */ 191 int sc_nblks; /* number of blocks currently tranferring */ 192 int sc_nbytes; /* number of bytes currently tranferring */ 193 194 int sc_drive; /* physical unit number */ 195 int sc_flags; 196 #define FD_OPEN 0x01 /* it's open */ 197 #define FD_MOTOR 0x02 /* motor should be on */ 198 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 199 int sc_cylin; /* where we think the head is */ 200 int sc_opts; /* user-set options */ 201 202 void *sc_sdhook; /* shutdownhook cookie */ 203 204 TAILQ_ENTRY(fd_softc) sc_drivechain; 205 int sc_ops; /* I/O ops since last switch */ 206 struct buf sc_q; /* head of buf chain */ 207 }; 208 209 /* floppy driver configuration */ 210 int fdmatch __P((struct device *, struct cfdata *, void *)); 211 void fdattach __P((struct device *, struct device *, void *)); 212 213 struct cfattach fd_ca = { 214 sizeof(struct fd_softc), fdmatch, fdattach 215 }; 216 217 struct cfdriver fd_cd = { 218 NULL, "fd", DV_DISK 219 }; 220 221 void fdgetdisklabel __P((dev_t)); 222 int fd_get_parms __P((struct fd_softc *)); 223 void fdstrategy __P((struct buf *)); 224 void fdstart __P((struct fd_softc *)); 225 int fdprint __P((void *, const char *)); 226 227 struct dkdriver fddkdriver = { fdstrategy }; 228 229 struct fd_type *fd_nvtotype __P((char *, int, int)); 230 void fd_set_motor __P((struct fdc_softc *fdc)); 231 void fd_motor_off __P((void *arg)); 232 void fd_motor_on __P((void *arg)); 233 int fdcresult __P((struct fdc_softc *fdc)); 234 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 235 void fdcstart __P((struct fdc_softc *fdc)); 236 void fdcstatus __P((struct device *dv, int n, char *s)); 237 void fdc_reset __P((struct fdc_softc *fdc)); 238 void fdctimeout __P((void *arg)); 239 void fdcpseudointr __P((void *arg)); 240 #ifdef FDC_C_HANDLER 241 int fdchwintr __P((struct fdc_softc *)); 242 #else 243 void fdchwintr __P((void)); 244 #endif 245 int fdcswintr __P((struct fdc_softc *)); 246 int fdcstate __P((struct fdc_softc *)); 247 void fdcretry __P((struct fdc_softc *fdc)); 248 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 249 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 250 void fd_do_eject __P((struct fd_softc *)); 251 void fd_mountroot_hook __P((struct device *)); 252 static void fdconf __P((struct fdc_softc *)); 253 254 #if PIL_FDSOFT == 4 255 #define IE_FDSOFT IE_L4 256 #else 257 #error 4 258 #endif 259 260 #ifdef FDC_C_HANDLER 261 #if defined(SUN4M) 262 #define FD_SET_SWINTR do { \ 263 if (CPU_ISSUN4M) \ 264 raise(0, PIL_FDSOFT); \ 265 else \ 266 ienab_bis(IE_L4); \ 267 } while(0) 268 #else 269 #define AUDIO_SET_SWINTR ienab_bis(IE_FDSOFT) 270 #endif /* defined(SUN4M) */ 271 #endif /* FDC_C_HANDLER */ 272 273 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 274 275 int 276 fdcmatch(parent, match, aux) 277 struct device *parent; 278 struct cfdata *match; 279 void *aux; 280 { 281 register struct confargs *ca = aux; 282 register struct romaux *ra = &ca->ca_ra; 283 284 /* 285 * Floppy doesn't exist on sun4. 286 */ 287 if (CPU_ISSUN4) 288 return (0); 289 290 /* 291 * Floppy controller is on mainbus on sun4c. 292 */ 293 if ((CPU_ISSUN4C) && (ca->ca_bustype != BUS_MAIN)) 294 return (0); 295 296 /* 297 * Floppy controller is on obio on sun4m. 298 */ 299 if ((CPU_ISSUN4M) && (ca->ca_bustype != BUS_OBIO)) 300 return (0); 301 302 /* Sun PROMs call the controller an "fd" or "SUNW,fdtwo" */ 303 if (strcmp(OBP_FDNAME, ra->ra_name)) 304 return (0); 305 306 if (ca->ca_ra.ra_vaddr && 307 probeget(ca->ca_ra.ra_vaddr, 1) == -1) { 308 return (0); 309 } 310 311 return (1); 312 } 313 314 /* 315 * Arguments passed between fdcattach and fdprobe. 316 */ 317 struct fdc_attach_args { 318 int fa_drive; 319 struct bootpath *fa_bootpath; 320 struct fd_type *fa_deftype; 321 }; 322 323 /* 324 * Print the location of a disk drive (called just before attaching the 325 * the drive). If `fdc' is not NULL, the drive was found but was not 326 * in the system config file; print the drive name as well. 327 * Return QUIET (config_find ignores this if the device was configured) to 328 * avoid printing `fdN not configured' messages. 329 */ 330 int 331 fdprint(aux, fdc) 332 void *aux; 333 const char *fdc; 334 { 335 register struct fdc_attach_args *fa = aux; 336 337 if (!fdc) 338 printf(" drive %d", fa->fa_drive); 339 return (QUIET); 340 } 341 342 static void 343 fdconf(fdc) 344 struct fdc_softc *fdc; 345 { 346 int vroom; 347 348 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 349 return; 350 351 /* 352 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 353 * the PROM thinks is appropriate. 354 */ 355 if ((vroom = fdc->sc_status[7]) == 0) 356 vroom = 0x64; 357 358 /* Configure controller to use FIFO and Implied Seek */ 359 out_fdc(fdc, NE7CMD_CFG); 360 out_fdc(fdc, vroom); 361 out_fdc(fdc, fdc->sc_cfg); 362 out_fdc(fdc, 0); /* PRETRK */ 363 /* No result phase */ 364 } 365 366 void 367 fdcattach(parent, self, aux) 368 struct device *parent, *self; 369 void *aux; 370 { 371 register struct confargs *ca = aux; 372 struct fdc_softc *fdc = (void *)self; 373 struct fdc_attach_args fa; 374 struct bootpath *bp; 375 int pri; 376 char code; 377 378 if (ca->ca_ra.ra_vaddr) 379 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 380 else 381 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_reg, 0, 382 ca->ca_ra.ra_len); 383 384 fdc->sc_state = DEVIDLE; 385 fdc->sc_istate = ISTATE_IDLE; 386 fdc->sc_flags |= FDC_EIS; 387 TAILQ_INIT(&fdc->sc_drives); 388 389 pri = ca->ca_ra.ra_intr[0].int_pri; 390 #ifdef FDC_C_HANDLER 391 fdc->sc_hih.ih_fun = (void *)fdchwintr; 392 fdc->sc_hih.ih_arg = fdc; 393 intr_establish(pri, &fdc->sc_hih); 394 #else 395 fdciop = &fdc->sc_io; 396 intr_fasttrap(pri, fdchwintr); 397 #endif 398 fdc->sc_sih.ih_fun = (void *)fdcswintr; 399 fdc->sc_sih.ih_arg = fdc; 400 intr_establish(PIL_FDSOFT, &fdc->sc_sih); 401 402 /* Assume a 82077 */ 403 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 404 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 405 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 406 407 code = '7'; 408 if (*fdc->sc_reg_dor == NE7_RQM) { 409 /* 410 * This hack from Chris Torek: apparently DOR really 411 * addresses MSR/DRS on a 82072. 412 * We used to rely on the VERSION command to tell the 413 * difference (which did not work). 414 */ 415 *fdc->sc_reg_dor = FDC_250KBPS; 416 if (*fdc->sc_reg_dor == NE7_RQM) 417 code = '2'; 418 } 419 if (code == '7') { 420 fdc->sc_flags |= FDC_82077; 421 } else { 422 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 423 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 424 fdc->sc_reg_dor = 0; 425 } 426 427 #ifdef FD_DEBUG 428 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 429 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 430 if (fdc_debug) 431 printf("[version cmd]"); 432 } 433 #endif 434 435 /* 436 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 437 * Note: CFG_EFIFO is active-low, initial threshold value: 8 438 */ 439 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 440 fdconf(fdc); 441 442 if (fdc->sc_flags & FDC_82077) { 443 /* Lock configuration across soft resets. */ 444 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 445 if (fdcresult(fdc) != 1) 446 printf(" CFGLOCK: unexpected response"); 447 } 448 449 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 450 451 printf(" pri %d, softpri %d: chip 8207%c\n", pri, PIL_FDSOFT, code); 452 453 /* 454 * Controller and drives are represented by one and the same 455 * Openprom node, so we can as well check for the floppy boots here. 456 */ 457 fa.fa_bootpath = 0; 458 if ((bp = ca->ca_ra.ra_bp) && strcmp(bp->name, OBP_FDNAME) == 0) { 459 460 switch (ca->ca_bustype) { 461 case BUS_MAIN: 462 /* 463 * We can get the bootpath in several different 464 * formats! The faked v1 bootpath looks like /fd@0,0. 465 * The v2 bootpath is either just /fd0, in which case 466 * `bp->val[0]' will have been set to -1, or /fd@x,y 467 * where <x,y> is the prom address specifier. 468 */ 469 if (((bp->val[0] == ca->ca_ra.ra_iospace) && 470 (bp->val[1] == (int)ca->ca_ra.ra_paddr)) || 471 472 ((bp->val[0] == -1) && /* v2: /fd0 */ 473 (bp->val[1] == 0)) || 474 475 ((bp->val[0] == 0) && /* v1: /fd@0,0 */ 476 (bp->val[1] == 0)) 477 ) 478 fa.fa_bootpath = bp; 479 break; 480 481 case BUS_OBIO: 482 /* 483 * floppy controller on obio (such as on the sun4m), 484 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 485 * We use "slot, offset" to determine if this is the 486 * right one. 487 */ 488 if ((bp->val[0] == ca->ca_slot) && 489 (bp->val[1] == ca->ca_offset)) 490 fa.fa_bootpath = bp; 491 break; 492 } 493 494 } 495 496 /* physical limit: four drives per controller. */ 497 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 498 fa.fa_deftype = NULL; /* unknown */ 499 fa.fa_deftype = &fd_types[0]; /* XXX */ 500 (void)config_found(self, (void *)&fa, fdprint); 501 } 502 503 bootpath_store(1, NULL); 504 } 505 506 int 507 fdmatch(parent, match, aux) 508 struct device *parent; 509 struct cfdata *match; 510 void *aux; 511 { 512 struct fdc_softc *fdc = (void *)parent; 513 struct fdc_attach_args *fa = aux; 514 int drive = fa->fa_drive; 515 int n, ok; 516 517 if (drive > 0) 518 /* XXX - for now, punt on more than one drive */ 519 return (0); 520 521 if (fdc->sc_flags & FDC_82077) { 522 /* select drive and turn on motor */ 523 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 524 /* wait for motor to spin up */ 525 delay(250000); 526 } else { 527 auxregbisc(AUXIO4C_FDS, 0); 528 } 529 fdc->sc_nstat = 0; 530 out_fdc(fdc, NE7CMD_RECAL); 531 out_fdc(fdc, drive); 532 /* wait for recalibrate */ 533 for (n = 0; n < 10000; n++) { 534 delay(1000); 535 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 536 /* wait a bit longer till device *really* is ready */ 537 delay(100000); 538 if (out_fdc(fdc, NE7CMD_SENSEI)) 539 break; 540 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 541 /* 542 * Got `invalid command'; we interpret it 543 * to mean that the re-calibrate hasn't in 544 * fact finished yet 545 */ 546 continue; 547 break; 548 } 549 } 550 n = fdc->sc_nstat; 551 #ifdef FD_DEBUG 552 if (fdc_debug) { 553 int i; 554 printf("fdprobe: %d stati:", n); 555 for (i = 0; i < n; i++) 556 printf(" 0x%x", fdc->sc_status[i]); 557 printf("\n"); 558 } 559 #endif 560 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 561 562 /* turn off motor */ 563 if (fdc->sc_flags & FDC_82077) { 564 /* deselect drive and turn motor off */ 565 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 566 } else { 567 auxregbisc(0, AUXIO4C_FDS); 568 } 569 570 return (ok); 571 } 572 573 /* 574 * Controller is working, and drive responded. Attach it. 575 */ 576 void 577 fdattach(parent, self, aux) 578 struct device *parent, *self; 579 void *aux; 580 { 581 struct fdc_softc *fdc = (void *)parent; 582 struct fd_softc *fd = (void *)self; 583 struct fdc_attach_args *fa = aux; 584 struct fd_type *type = fa->fa_deftype; 585 int drive = fa->fa_drive; 586 587 /* XXX Allow `flags' to override device type? */ 588 589 if (type) 590 printf(": %s %d cyl, %d head, %d sec\n", type->name, 591 type->cylinders, type->heads, type->sectrac); 592 else 593 printf(": density unknown\n"); 594 595 fd->sc_cylin = -1; 596 fd->sc_drive = drive; 597 fd->sc_deftype = type; 598 fdc->sc_fd[drive] = fd; 599 600 out_fdc(fdc, NE7CMD_SPECIFY); 601 out_fdc(fdc, type->steprate); 602 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 603 604 /* 605 * Initialize and attach the disk structure. 606 */ 607 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 608 fd->sc_dk.dk_driver = &fddkdriver; 609 disk_attach(&fd->sc_dk); 610 611 /* 612 * We're told if we're the boot device in fdcattach(). 613 */ 614 if (fa->fa_bootpath) 615 fa->fa_bootpath->dev = &fd->sc_dv; 616 617 /* 618 * Establish a mountroot_hook anyway in case we booted 619 * with RB_ASKNAME and get selected as the boot device. 620 */ 621 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 622 623 /* Make sure the drive motor gets turned off at shutdown time. */ 624 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 625 626 /* XXX Need to do some more fiddling with sc_dk. */ 627 dk_establish(&fd->sc_dk, &fd->sc_dv); 628 } 629 630 __inline struct fd_type * 631 fd_dev_to_type(fd, dev) 632 struct fd_softc *fd; 633 dev_t dev; 634 { 635 int type = FDTYPE(dev); 636 637 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 638 return (NULL); 639 return (type ? &fd_types[type - 1] : fd->sc_deftype); 640 } 641 642 void 643 fdstrategy(bp) 644 register struct buf *bp; /* IO operation to perform */ 645 { 646 struct fd_softc *fd; 647 int unit = FDUNIT(bp->b_dev); 648 int sz; 649 int s; 650 651 /* Valid unit, controller, and request? */ 652 if (unit >= fd_cd.cd_ndevs || 653 (fd = fd_cd.cd_devs[unit]) == 0 || 654 bp->b_blkno < 0 || 655 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 656 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 657 (bp->b_flags & B_FORMAT) == 0)) { 658 bp->b_error = EINVAL; 659 goto bad; 660 } 661 662 /* If it's a null transfer, return immediately. */ 663 if (bp->b_bcount == 0) 664 goto done; 665 666 sz = howmany(bp->b_bcount, DEV_BSIZE); 667 668 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 669 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 670 - bp->b_blkno; 671 if (sz == 0) { 672 /* If exactly at end of disk, return EOF. */ 673 bp->b_resid = bp->b_bcount; 674 goto done; 675 } 676 if (sz < 0) { 677 /* If past end of disk, return EINVAL. */ 678 bp->b_error = EINVAL; 679 goto bad; 680 } 681 /* Otherwise, truncate request. */ 682 bp->b_bcount = sz << DEV_BSHIFT; 683 } 684 685 bp->b_cylin = (bp->b_blkno * DEV_BSIZE) / 686 (FD_BSIZE(fd) * fd->sc_type->seccyl); 687 688 #ifdef FD_DEBUG 689 if (fdc_debug > 1) 690 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 691 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 692 #endif 693 694 /* Queue transfer on drive, activate drive and controller if idle. */ 695 s = splbio(); 696 disksort(&fd->sc_q, bp); 697 untimeout(fd_motor_off, fd); /* a good idea */ 698 if (!fd->sc_q.b_active) 699 fdstart(fd); 700 #ifdef DIAGNOSTIC 701 else { 702 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 703 if (fdc->sc_state == DEVIDLE) { 704 printf("fdstrategy: controller inactive\n"); 705 fdcstart(fdc); 706 } 707 } 708 #endif 709 splx(s); 710 return; 711 712 bad: 713 bp->b_flags |= B_ERROR; 714 done: 715 /* Toss transfer; we're done early. */ 716 biodone(bp); 717 } 718 719 void 720 fdstart(fd) 721 struct fd_softc *fd; 722 { 723 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 724 int active = fdc->sc_drives.tqh_first != 0; 725 726 /* Link into controller queue. */ 727 fd->sc_q.b_active = 1; 728 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 729 730 /* If controller not already active, start it. */ 731 if (!active) 732 fdcstart(fdc); 733 } 734 735 void 736 fdfinish(fd, bp) 737 struct fd_softc *fd; 738 struct buf *bp; 739 { 740 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 741 742 /* 743 * Move this drive to the end of the queue to give others a `fair' 744 * chance. We only force a switch if N operations are completed while 745 * another drive is waiting to be serviced, since there is a long motor 746 * startup delay whenever we switch. 747 */ 748 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 749 fd->sc_ops = 0; 750 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 751 if (bp->b_actf) { 752 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 753 } else 754 fd->sc_q.b_active = 0; 755 } 756 bp->b_resid = fd->sc_bcount; 757 fd->sc_skip = 0; 758 fd->sc_q.b_actf = bp->b_actf; 759 760 biodone(bp); 761 /* turn off motor 5s from now */ 762 timeout(fd_motor_off, fd, 5 * hz); 763 fdc->sc_state = DEVIDLE; 764 } 765 766 void 767 fdc_reset(fdc) 768 struct fdc_softc *fdc; 769 { 770 if (fdc->sc_flags & FDC_82077) { 771 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 772 } 773 774 *fdc->sc_reg_drs = DRS_RESET; 775 delay(10); 776 *fdc->sc_reg_drs = 0; 777 778 if (fdc->sc_flags & FDC_82077) { 779 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 780 } 781 #ifdef FD_DEBUG 782 if (fdc_debug) 783 printf("fdc reset\n"); 784 #endif 785 } 786 787 void 788 fd_set_motor(fdc) 789 struct fdc_softc *fdc; 790 { 791 struct fd_softc *fd; 792 u_char status; 793 int n; 794 795 if (fdc->sc_flags & FDC_82077) { 796 status = FDO_FRST | FDO_FDMAEN; 797 if ((fd = fdc->sc_drives.tqh_first) != NULL) 798 status |= fd->sc_drive; 799 800 for (n = 0; n < 4; n++) 801 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 802 status |= FDO_MOEN(n); 803 *fdc->sc_reg_dor = status; 804 } else { 805 int on = 0; 806 807 for (n = 0; n < 4; n++) 808 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 809 on = 1; 810 if (on) { 811 auxregbisc(AUXIO4C_FDS, 0); 812 } else { 813 auxregbisc(0, AUXIO4C_FDS); 814 } 815 } 816 } 817 818 void 819 fd_motor_off(arg) 820 void *arg; 821 { 822 struct fd_softc *fd = arg; 823 int s; 824 825 s = splbio(); 826 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 827 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 828 splx(s); 829 } 830 831 void 832 fd_motor_on(arg) 833 void *arg; 834 { 835 struct fd_softc *fd = arg; 836 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 837 int s; 838 839 s = splbio(); 840 fd->sc_flags &= ~FD_MOTOR_WAIT; 841 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 842 (void) fdcstate(fdc); 843 splx(s); 844 } 845 846 int 847 fdcresult(fdc) 848 struct fdc_softc *fdc; 849 { 850 u_char i; 851 int j = 100000, 852 n = 0; 853 854 for (; j; j--) { 855 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 856 if (i == NE7_RQM) 857 return (fdc->sc_nstat = n); 858 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 859 if (n >= sizeof(fdc->sc_status)) { 860 log(LOG_ERR, "fdcresult: overrun\n"); 861 return (-1); 862 } 863 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 864 } else 865 delay(10); 866 } 867 log(LOG_ERR, "fdcresult: timeout\n"); 868 return (fdc->sc_nstat = -1); 869 } 870 871 int 872 out_fdc(fdc, x) 873 struct fdc_softc *fdc; 874 u_char x; 875 { 876 int i = 100000; 877 878 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 879 delay(1); 880 if (i <= 0) 881 return (-1); 882 883 *fdc->sc_reg_fifo = x; 884 return (0); 885 } 886 887 int 888 fdopen(dev, flags, fmt, p) 889 dev_t dev; 890 int flags, fmt; 891 struct proc *p; 892 { 893 int unit, pmask; 894 struct fd_softc *fd; 895 struct fd_type *type; 896 897 unit = FDUNIT(dev); 898 if (unit >= fd_cd.cd_ndevs) 899 return (ENXIO); 900 fd = fd_cd.cd_devs[unit]; 901 if (fd == 0) 902 return (ENXIO); 903 type = fd_dev_to_type(fd, dev); 904 if (type == NULL) 905 return (ENXIO); 906 907 if ((fd->sc_flags & FD_OPEN) != 0 && 908 fd->sc_type != type) 909 return (EBUSY); 910 911 fd->sc_type = type; 912 fd->sc_cylin = -1; 913 fd->sc_flags |= FD_OPEN; 914 915 /* 916 * Only update the disklabel if we're not open anywhere else. 917 */ 918 if (fd->sc_dk.dk_openmask == 0) 919 fdgetdisklabel(dev); 920 921 pmask = (1 << DISKPART(dev)); 922 923 switch (fmt) { 924 case S_IFCHR: 925 fd->sc_dk.dk_copenmask |= pmask; 926 break; 927 928 case S_IFBLK: 929 fd->sc_dk.dk_bopenmask |= pmask; 930 break; 931 } 932 fd->sc_dk.dk_openmask = 933 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 934 935 return (0); 936 } 937 938 int 939 fdclose(dev, flags, fmt, p) 940 dev_t dev; 941 int flags, fmt; 942 struct proc *p; 943 { 944 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 945 int pmask = (1 << DISKPART(dev)); 946 947 fd->sc_flags &= ~FD_OPEN; 948 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 949 950 switch (fmt) { 951 case S_IFCHR: 952 fd->sc_dk.dk_copenmask &= ~pmask; 953 break; 954 955 case S_IFBLK: 956 fd->sc_dk.dk_bopenmask &= ~pmask; 957 break; 958 } 959 fd->sc_dk.dk_openmask = 960 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 961 962 return (0); 963 } 964 965 int 966 fdread(dev, uio, flag) 967 dev_t dev; 968 struct uio *uio; 969 int flag; 970 { 971 972 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 973 } 974 975 int 976 fdwrite(dev, uio, flag) 977 dev_t dev; 978 struct uio *uio; 979 int flag; 980 { 981 982 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 983 } 984 985 void 986 fdcstart(fdc) 987 struct fdc_softc *fdc; 988 { 989 990 #ifdef DIAGNOSTIC 991 /* only got here if controller's drive queue was inactive; should 992 be in idle state */ 993 if (fdc->sc_state != DEVIDLE) { 994 printf("fdcstart: not idle\n"); 995 return; 996 } 997 #endif 998 (void) fdcstate(fdc); 999 } 1000 1001 void 1002 fdcstatus(dv, n, s) 1003 struct device *dv; 1004 int n; 1005 char *s; 1006 { 1007 struct fdc_softc *fdc = (void *)dv->dv_parent; 1008 char bits[64]; 1009 #if 0 1010 /* 1011 * A 82072 seems to return <invalid command> on 1012 * gratuitous Sense Interrupt commands. 1013 */ 1014 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1015 out_fdc(fdc, NE7CMD_SENSEI); 1016 (void) fdcresult(fdc); 1017 n = 2; 1018 } 1019 #endif 1020 1021 /* Just print last status */ 1022 n = fdc->sc_nstat; 1023 1024 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1025 1026 switch (n) { 1027 case 0: 1028 printf("\n"); 1029 break; 1030 case 2: 1031 printf(" (st0 %s cyl %d)\n", 1032 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1033 bits, sizeof(bits)), fdc->sc_status[1]); 1034 break; 1035 case 7: 1036 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1037 NE7_ST0BITS, bits, sizeof(bits))); 1038 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1039 NE7_ST1BITS, bits, sizeof(bits))); 1040 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1041 NE7_ST2BITS, bits, sizeof(bits))); 1042 printf(" cyl %d head %d sec %d)\n", 1043 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1044 break; 1045 #ifdef DIAGNOSTIC 1046 default: 1047 printf(" fdcstatus: weird size: %d\n", n); 1048 break; 1049 #endif 1050 } 1051 } 1052 1053 void 1054 fdctimeout(arg) 1055 void *arg; 1056 { 1057 struct fdc_softc *fdc = arg; 1058 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1059 int s; 1060 1061 s = splbio(); 1062 fdcstatus(&fd->sc_dv, 0, "timeout"); 1063 1064 if (fd->sc_q.b_actf) 1065 fdc->sc_state++; 1066 else 1067 fdc->sc_state = DEVIDLE; 1068 1069 (void) fdcstate(fdc); 1070 splx(s); 1071 } 1072 1073 void 1074 fdcpseudointr(arg) 1075 void *arg; 1076 { 1077 struct fdc_softc *fdc = arg; 1078 int s; 1079 1080 /* Just ensure it has the right spl. */ 1081 s = splbio(); 1082 (void) fdcstate(fdc); 1083 splx(s); 1084 } 1085 1086 1087 #ifdef FDC_C_HANDLER 1088 /* 1089 * hardware interrupt entry point: must be converted to `fast' 1090 * (in-window) handler. 1091 */ 1092 int 1093 fdchwintr(fdc) 1094 struct fdc_softc *fdc; 1095 { 1096 1097 switch (fdc->sc_istate) { 1098 case ISTATE_IDLE: 1099 return (0); 1100 case ISTATE_SENSEI: 1101 out_fdc(fdc, NE7CMD_SENSEI); 1102 fdcresult(fdc); 1103 fdc->sc_istate = ISTATE_IDLE; 1104 FD_SET_SWINTR; 1105 return (1); 1106 case ISTATE_SPURIOUS: 1107 fdcresult(fdc); 1108 fdc->sc_istate = ISTATE_SPURIOUS; 1109 printf("fdc: stray hard interrupt... "); 1110 FD_SET_SWINTR; 1111 return (1); 1112 case ISTATE_DMA: 1113 break; 1114 default: 1115 printf("fdc: goofed ...\n"); 1116 return (1); 1117 } 1118 1119 for (;;) { 1120 register int msr; 1121 1122 msr = *fdc->sc_reg_msr; 1123 1124 if ((msr & NE7_RQM) == 0) 1125 break; 1126 1127 if ((msr & NE7_NDM) == 0) { 1128 fdcresult(fdc); 1129 fdc->sc_istate = ISTATE_IDLE; 1130 ienab_bis(IE_FDSOFT); 1131 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1132 break; 1133 } 1134 1135 if (msr & NE7_DIO) { 1136 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1137 } else { 1138 *fdc->sc_reg_fifo = *fdc->sc_data++; 1139 } 1140 if (--fdc->sc_tc == 0) { 1141 fdc->sc_istate = ISTATE_DONE; 1142 FTC_FLIP; 1143 fdcresult(fdc); 1144 FD_SET_SWINTR; 1145 break; 1146 } 1147 } 1148 return (1); 1149 } 1150 #endif 1151 1152 int 1153 fdcswintr(fdc) 1154 struct fdc_softc *fdc; 1155 { 1156 int s; 1157 1158 if (fdc->sc_istate != ISTATE_DONE) 1159 return (0); 1160 1161 fdc->sc_istate = ISTATE_IDLE; 1162 s = splbio(); 1163 fdcstate(fdc); 1164 splx(s); 1165 return (1); 1166 } 1167 1168 int 1169 fdcstate(fdc) 1170 struct fdc_softc *fdc; 1171 { 1172 #define st0 fdc->sc_status[0] 1173 #define st1 fdc->sc_status[1] 1174 #define cyl fdc->sc_status[1] 1175 #define OUT_FDC(fdc, c, s) \ 1176 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1177 1178 struct fd_softc *fd; 1179 struct buf *bp; 1180 int read, head, sec, nblks; 1181 struct fd_type *type; 1182 struct ne7_fd_formb *finfo = NULL; 1183 1184 1185 if (fdc->sc_istate != ISTATE_IDLE) { 1186 /* Trouble... */ 1187 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1188 fdc->sc_state, fdc->sc_istate); 1189 fdc->sc_istate = ISTATE_IDLE; 1190 if (fdc->sc_state == RESETCOMPLETE || 1191 fdc->sc_state == RESETTIMEDOUT) { 1192 panic("fdcintr: spurious interrupt can't be cleared"); 1193 } 1194 goto doreset; 1195 } 1196 1197 loop: 1198 /* Is there a drive for the controller to do a transfer with? */ 1199 fd = fdc->sc_drives.tqh_first; 1200 if (fd == NULL) { 1201 fdc->sc_state = DEVIDLE; 1202 return (0); 1203 } 1204 1205 /* Is there a transfer to this drive? If not, deactivate drive. */ 1206 bp = fd->sc_q.b_actf; 1207 if (bp == NULL) { 1208 fd->sc_ops = 0; 1209 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1210 fd->sc_q.b_active = 0; 1211 goto loop; 1212 } 1213 1214 if (bp->b_flags & B_FORMAT) 1215 finfo = (struct ne7_fd_formb *)bp->b_data; 1216 1217 switch (fdc->sc_state) { 1218 case DEVIDLE: 1219 fdc->sc_errors = 0; 1220 fd->sc_skip = 0; 1221 fd->sc_bcount = bp->b_bcount; 1222 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1223 untimeout(fd_motor_off, fd); 1224 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1225 fdc->sc_state = MOTORWAIT; 1226 return (1); 1227 } 1228 if ((fd->sc_flags & FD_MOTOR) == 0) { 1229 /* Turn on the motor, being careful about pairing. */ 1230 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1231 if (ofd && ofd->sc_flags & FD_MOTOR) { 1232 untimeout(fd_motor_off, ofd); 1233 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1234 } 1235 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1236 fd_set_motor(fdc); 1237 fdc->sc_state = MOTORWAIT; 1238 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1239 /* Allow .25s for motor to stabilize. */ 1240 timeout(fd_motor_on, fd, hz / 4); 1241 } else { 1242 fd->sc_flags &= ~FD_MOTOR_WAIT; 1243 goto loop; 1244 } 1245 return (1); 1246 } 1247 /* Make sure the right drive is selected. */ 1248 fd_set_motor(fdc); 1249 1250 /*FALLTHROUGH*/ 1251 case DOSEEK: 1252 doseek: 1253 if ((fdc->sc_flags & FDC_EIS) && 1254 (bp->b_flags & B_FORMAT) == 0) { 1255 fd->sc_cylin = bp->b_cylin; 1256 /* We use implied seek */ 1257 goto doio; 1258 } 1259 1260 if (fd->sc_cylin == bp->b_cylin) 1261 goto doio; 1262 1263 /* specify command */ 1264 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1265 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1266 /* XXX head load time == 6ms */ 1267 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1268 1269 fdc->sc_istate = ISTATE_SENSEI; 1270 /* seek function */ 1271 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1272 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1273 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1274 1275 fd->sc_cylin = -1; 1276 fdc->sc_state = SEEKWAIT; 1277 fdc->sc_nstat = 0; 1278 1279 fd->sc_dk.dk_seek++; 1280 disk_busy(&fd->sc_dk); 1281 1282 timeout(fdctimeout, fdc, 4 * hz); 1283 return (1); 1284 1285 case DOIO: 1286 doio: 1287 if (finfo != NULL) 1288 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1289 (char *)finfo; 1290 type = fd->sc_type; 1291 sec = fd->sc_blkno % type->seccyl; 1292 nblks = type->seccyl - sec; 1293 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1294 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1295 fd->sc_nblks = nblks; 1296 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1297 head = sec / type->sectrac; 1298 sec -= head * type->sectrac; 1299 #ifdef DIAGNOSTIC 1300 {int block; 1301 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1302 if (block != fd->sc_blkno) { 1303 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1304 #ifdef DDB 1305 Debugger(); 1306 #endif 1307 }} 1308 #endif 1309 read = bp->b_flags & B_READ; 1310 1311 /* Setup for pseudo DMA */ 1312 fdc->sc_data = bp->b_data + fd->sc_skip; 1313 fdc->sc_tc = fd->sc_nbytes; 1314 1315 *fdc->sc_reg_drs = type->rate; 1316 #ifdef FD_DEBUG 1317 if (fdc_debug > 1) 1318 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1319 read ? "read" : "write", fd->sc_drive, 1320 fd->sc_cylin, head, sec, nblks); 1321 #endif 1322 fdc->sc_state = IOCOMPLETE; 1323 fdc->sc_istate = ISTATE_DMA; 1324 fdc->sc_nstat = 0; 1325 if (finfo != NULL) { 1326 /* formatting */ 1327 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1328 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1329 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1330 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1331 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1332 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1333 } else { 1334 if (read) 1335 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1336 else 1337 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1338 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1339 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1340 OUT_FDC(fdc, head, IOTIMEDOUT); 1341 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1342 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1343 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1344 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1345 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1346 } 1347 1348 disk_busy(&fd->sc_dk); 1349 1350 /* allow 2 seconds for operation */ 1351 timeout(fdctimeout, fdc, 2 * hz); 1352 return (1); /* will return later */ 1353 1354 case SEEKWAIT: 1355 untimeout(fdctimeout, fdc); 1356 fdc->sc_state = SEEKCOMPLETE; 1357 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1358 /* allow 1/50 second for heads to settle */ 1359 timeout(fdcpseudointr, fdc, hz / 50); 1360 return (1); /* will return later */ 1361 } 1362 /*FALLTHROUGH*/ 1363 case SEEKCOMPLETE: 1364 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1365 1366 /* Make sure seek really happened. */ 1367 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1368 cyl != bp->b_cylin * fd->sc_type->step) { 1369 #ifdef FD_DEBUG 1370 if (fdc_debug) 1371 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1372 #endif 1373 fdcretry(fdc); 1374 goto loop; 1375 } 1376 fd->sc_cylin = bp->b_cylin; 1377 goto doio; 1378 1379 case IOTIMEDOUT: 1380 FTC_FLIP; 1381 (void)fdcresult(fdc); 1382 /*FALLTHROUGH*/ 1383 case SEEKTIMEDOUT: 1384 case RECALTIMEDOUT: 1385 case RESETTIMEDOUT: 1386 fdcretry(fdc); 1387 goto loop; 1388 1389 case IOCOMPLETE: /* IO DONE, post-analyze */ 1390 untimeout(fdctimeout, fdc); 1391 1392 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1393 1394 if (fdc->sc_nstat != 7 || st1 != 0 || 1395 ((st0 & 0xf8) != 0 && 1396 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1397 #ifdef FD_DEBUG 1398 if (fdc_debug) { 1399 fdcstatus(&fd->sc_dv, 7, 1400 bp->b_flags & B_READ 1401 ? "read failed" : "write failed"); 1402 printf("blkno %d nblks %d nstat %d tc %d\n", 1403 fd->sc_blkno, fd->sc_nblks, 1404 fdc->sc_nstat, fdc->sc_tc); 1405 } 1406 #endif 1407 if (fdc->sc_nstat == 7 && 1408 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1409 1410 /* 1411 * Silently retry overruns if no other 1412 * error bit is set. Adjust threshold. 1413 */ 1414 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1415 if (thr < 15) { 1416 thr++; 1417 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1418 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1419 #ifdef FD_DEBUG 1420 if (fdc_debug) 1421 printf("fdc: %d -> threshold\n", thr); 1422 #endif 1423 fdconf(fdc); 1424 fdc->sc_overruns = 0; 1425 } 1426 if (++fdc->sc_overruns < 3) { 1427 fdc->sc_state = DOIO; 1428 goto loop; 1429 } 1430 } 1431 fdcretry(fdc); 1432 goto loop; 1433 } 1434 if (fdc->sc_errors) { 1435 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1436 fd->sc_skip / FD_BSIZE(fd), 1437 (struct disklabel *)NULL); 1438 printf("\n"); 1439 fdc->sc_errors = 0; 1440 } else { 1441 if (--fdc->sc_overruns < -20) { 1442 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1443 if (thr > 0) { 1444 thr--; 1445 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1446 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1447 #ifdef FD_DEBUG 1448 if (fdc_debug) 1449 printf("fdc: %d -> threshold\n", thr); 1450 #endif 1451 fdconf(fdc); 1452 } 1453 fdc->sc_overruns = 0; 1454 } 1455 } 1456 fd->sc_blkno += fd->sc_nblks; 1457 fd->sc_skip += fd->sc_nbytes; 1458 fd->sc_bcount -= fd->sc_nbytes; 1459 if (finfo == NULL && fd->sc_bcount > 0) { 1460 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1461 goto doseek; 1462 } 1463 fdfinish(fd, bp); 1464 goto loop; 1465 1466 case DORESET: 1467 doreset: 1468 /* try a reset, keep motor on */ 1469 fd_set_motor(fdc); 1470 delay(100); 1471 fdc_reset(fdc); 1472 fdc->sc_nstat = 0; 1473 fdc->sc_istate = ISTATE_SENSEI; 1474 fdc->sc_state = RESETCOMPLETE; 1475 timeout(fdctimeout, fdc, hz / 2); 1476 return (1); /* will return later */ 1477 1478 case RESETCOMPLETE: 1479 untimeout(fdctimeout, fdc); 1480 fdconf(fdc); 1481 1482 /* fall through */ 1483 case DORECAL: 1484 fdc->sc_state = RECALWAIT; 1485 fdc->sc_istate = ISTATE_SENSEI; 1486 fdc->sc_nstat = 0; 1487 /* recalibrate function */ 1488 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1489 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1490 timeout(fdctimeout, fdc, 5 * hz); 1491 return (1); /* will return later */ 1492 1493 case RECALWAIT: 1494 untimeout(fdctimeout, fdc); 1495 fdc->sc_state = RECALCOMPLETE; 1496 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1497 /* allow 1/30 second for heads to settle */ 1498 timeout(fdcpseudointr, fdc, hz / 30); 1499 return (1); /* will return later */ 1500 } 1501 1502 case RECALCOMPLETE: 1503 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1504 #ifdef FD_DEBUG 1505 if (fdc_debug) 1506 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1507 #endif 1508 fdcretry(fdc); 1509 goto loop; 1510 } 1511 fd->sc_cylin = 0; 1512 goto doseek; 1513 1514 case MOTORWAIT: 1515 if (fd->sc_flags & FD_MOTOR_WAIT) 1516 return (1); /* time's not up yet */ 1517 goto doseek; 1518 1519 default: 1520 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1521 return (1); 1522 } 1523 #ifdef DIAGNOSTIC 1524 panic("fdcintr: impossible"); 1525 #endif 1526 #undef st0 1527 #undef st1 1528 #undef cyl 1529 } 1530 1531 void 1532 fdcretry(fdc) 1533 struct fdc_softc *fdc; 1534 { 1535 char bits[64]; 1536 struct fd_softc *fd; 1537 struct buf *bp; 1538 1539 fd = fdc->sc_drives.tqh_first; 1540 bp = fd->sc_q.b_actf; 1541 1542 fdc->sc_overruns = 0; 1543 if (fd->sc_opts & FDOPT_NORETRY) 1544 goto fail; 1545 1546 switch (fdc->sc_errors) { 1547 case 0: 1548 /* try again */ 1549 fdc->sc_state = 1550 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1551 break; 1552 1553 case 1: case 2: case 3: 1554 /* didn't work; try recalibrating */ 1555 fdc->sc_state = DORECAL; 1556 break; 1557 1558 case 4: 1559 /* still no go; reset the bastard */ 1560 fdc->sc_state = DORESET; 1561 break; 1562 1563 default: 1564 fail: 1565 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1566 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1567 fd->sc_skip / FD_BSIZE(fd), 1568 (struct disklabel *)NULL); 1569 1570 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1571 NE7_ST0BITS, bits, sizeof(bits))); 1572 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1573 NE7_ST1BITS, bits, sizeof(bits))); 1574 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1575 NE7_ST2BITS, bits, sizeof(bits))); 1576 printf(" cyl %d head %d sec %d)\n", 1577 fdc->sc_status[3], fdc->sc_status[4], 1578 fdc->sc_status[5]); 1579 } 1580 1581 bp->b_flags |= B_ERROR; 1582 bp->b_error = EIO; 1583 fdfinish(fd, bp); 1584 } 1585 fdc->sc_errors++; 1586 } 1587 1588 int 1589 fdsize(dev) 1590 dev_t dev; 1591 { 1592 1593 /* Swapping to floppies would not make sense. */ 1594 return (-1); 1595 } 1596 1597 int 1598 fddump(dev, blkno, va, size) 1599 dev_t dev; 1600 daddr_t blkno; 1601 caddr_t va; 1602 size_t size; 1603 { 1604 1605 /* Not implemented. */ 1606 return (EINVAL); 1607 } 1608 1609 int 1610 fdioctl(dev, cmd, addr, flag, p) 1611 dev_t dev; 1612 u_long cmd; 1613 caddr_t addr; 1614 int flag; 1615 struct proc *p; 1616 { 1617 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1618 struct fdformat_parms *form_parms; 1619 struct fdformat_cmd *form_cmd; 1620 struct ne7_fd_formb fd_formb; 1621 int il[FD_MAX_NSEC + 1]; 1622 int i, j; 1623 int error; 1624 1625 switch (cmd) { 1626 case DIOCGDINFO: 1627 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1628 return 0; 1629 1630 case DIOCWLABEL: 1631 if ((flag & FWRITE) == 0) 1632 return EBADF; 1633 /* XXX do something */ 1634 return (0); 1635 1636 case DIOCWDINFO: 1637 if ((flag & FWRITE) == 0) 1638 return (EBADF); 1639 1640 error = setdisklabel(fd->sc_dk.dk_label, 1641 (struct disklabel *)addr, 0, 1642 fd->sc_dk.dk_cpulabel); 1643 if (error) 1644 return (error); 1645 1646 error = writedisklabel(dev, fdstrategy, 1647 fd->sc_dk.dk_label, 1648 fd->sc_dk.dk_cpulabel); 1649 return (error); 1650 1651 case DIOCLOCK: 1652 /* 1653 * Nothing to do here, really. 1654 */ 1655 return (0); 1656 1657 case DIOCEJECT: 1658 fd_do_eject(fd); 1659 return (0); 1660 1661 case FDIOCGETFORMAT: 1662 form_parms = (struct fdformat_parms *)addr; 1663 form_parms->fdformat_version = FDFORMAT_VERSION; 1664 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1665 form_parms->ncyl = fd->sc_type->cylinders; 1666 form_parms->nspt = fd->sc_type->sectrac; 1667 form_parms->ntrk = fd->sc_type->heads; 1668 form_parms->stepspercyl = fd->sc_type->step; 1669 form_parms->gaplen = fd->sc_type->gap2; 1670 form_parms->fillbyte = fd->sc_type->fillbyte; 1671 form_parms->interleave = fd->sc_type->interleave; 1672 switch (fd->sc_type->rate) { 1673 case FDC_500KBPS: 1674 form_parms->xfer_rate = 500 * 1024; 1675 break; 1676 case FDC_300KBPS: 1677 form_parms->xfer_rate = 300 * 1024; 1678 break; 1679 case FDC_250KBPS: 1680 form_parms->xfer_rate = 250 * 1024; 1681 break; 1682 default: 1683 return (EINVAL); 1684 } 1685 return (0); 1686 1687 case FDIOCSETFORMAT: 1688 if ((flag & FWRITE) == 0) 1689 return (EBADF); /* must be opened for writing */ 1690 1691 form_parms = (struct fdformat_parms *)addr; 1692 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1693 return (EINVAL);/* wrong version of formatting prog */ 1694 1695 i = form_parms->nbps >> 7; 1696 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1697 i & ~(1 << (ffs(i)-1))) 1698 /* not a power-of-two multiple of 128 */ 1699 return (EINVAL); 1700 1701 switch (form_parms->xfer_rate) { 1702 case 500 * 1024: 1703 fd->sc_type->rate = FDC_500KBPS; 1704 break; 1705 case 300 * 1024: 1706 fd->sc_type->rate = FDC_300KBPS; 1707 break; 1708 case 250 * 1024: 1709 fd->sc_type->rate = FDC_250KBPS; 1710 break; 1711 default: 1712 return (EINVAL); 1713 } 1714 1715 if (form_parms->nspt > FD_MAX_NSEC || 1716 form_parms->fillbyte > 0xff || 1717 form_parms->interleave > 0xff) 1718 return EINVAL; 1719 fd->sc_type->sectrac = form_parms->nspt; 1720 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1721 return EINVAL; 1722 fd->sc_type->heads = form_parms->ntrk; 1723 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1724 fd->sc_type->secsize = ffs(i)-1; 1725 fd->sc_type->gap2 = form_parms->gaplen; 1726 fd->sc_type->cylinders = form_parms->ncyl; 1727 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1728 form_parms->nbps / DEV_BSIZE; 1729 fd->sc_type->step = form_parms->stepspercyl; 1730 fd->sc_type->fillbyte = form_parms->fillbyte; 1731 fd->sc_type->interleave = form_parms->interleave; 1732 return (0); 1733 1734 case FDIOCFORMAT_TRACK: 1735 if((flag & FWRITE) == 0) 1736 /* must be opened for writing */ 1737 return (EBADF); 1738 form_cmd = (struct fdformat_cmd *)addr; 1739 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1740 /* wrong version of formatting prog */ 1741 return (EINVAL); 1742 1743 if (form_cmd->head >= fd->sc_type->heads || 1744 form_cmd->cylinder >= fd->sc_type->cylinders) { 1745 return (EINVAL); 1746 } 1747 1748 fd_formb.head = form_cmd->head; 1749 fd_formb.cyl = form_cmd->cylinder; 1750 fd_formb.transfer_rate = fd->sc_type->rate; 1751 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1752 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1753 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1754 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1755 1756 bzero(il, sizeof il); 1757 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1758 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1759 j++; 1760 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1761 j += fd->sc_type->interleave; 1762 } 1763 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1764 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1765 fd_formb.fd_formb_headno(i) = form_cmd->head; 1766 fd_formb.fd_formb_secno(i) = il[i+1]; 1767 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1768 } 1769 1770 return fdformat(dev, &fd_formb, p); 1771 1772 case FDIOCGETOPTS: /* get drive options */ 1773 *(int *)addr = fd->sc_opts; 1774 return (0); 1775 1776 case FDIOCSETOPTS: /* set drive options */ 1777 fd->sc_opts = *(int *)addr; 1778 return (0); 1779 1780 #ifdef DEBUG 1781 case _IO('f', 100): 1782 { 1783 int i; 1784 struct fdc_softc *fdc = (struct fdc_softc *) 1785 fd->sc_dv.dv_parent; 1786 1787 out_fdc(fdc, NE7CMD_DUMPREG); 1788 fdcresult(fdc); 1789 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1790 for (i = 0; i < fdc->sc_nstat; i++) 1791 printf(" 0x%x", fdc->sc_status[i]); 1792 printf(">\n"); 1793 } 1794 1795 return (0); 1796 case _IOW('f', 101, int): 1797 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1798 ~CFG_THRHLD_MASK; 1799 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1800 (*(int *)addr & CFG_THRHLD_MASK); 1801 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1802 return (0); 1803 case _IO('f', 102): 1804 { 1805 int i; 1806 struct fdc_softc *fdc = (struct fdc_softc *) 1807 fd->sc_dv.dv_parent; 1808 out_fdc(fdc, NE7CMD_SENSEI); 1809 fdcresult(fdc); 1810 printf("sensei(%d regs): <", fdc->sc_nstat); 1811 for (i=0; i< fdc->sc_nstat; i++) 1812 printf(" 0x%x", fdc->sc_status[i]); 1813 } 1814 printf(">\n"); 1815 return (0); 1816 #endif 1817 default: 1818 return (ENOTTY); 1819 } 1820 1821 #ifdef DIAGNOSTIC 1822 panic("fdioctl: impossible"); 1823 #endif 1824 } 1825 1826 int 1827 fdformat(dev, finfo, p) 1828 dev_t dev; 1829 struct ne7_fd_formb *finfo; 1830 struct proc *p; 1831 { 1832 int rv = 0, s; 1833 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1834 struct fd_type *type = fd->sc_type; 1835 struct buf *bp; 1836 1837 /* set up a buffer header for fdstrategy() */ 1838 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1839 if (bp == 0) 1840 return (ENOBUFS); 1841 1842 PHOLD(p); 1843 bzero((void *)bp, sizeof(struct buf)); 1844 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1845 bp->b_proc = p; 1846 bp->b_dev = dev; 1847 1848 /* 1849 * Calculate a fake blkno, so fdstrategy() would initiate a 1850 * seek to the requested cylinder. 1851 */ 1852 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1853 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1854 / DEV_BSIZE; 1855 1856 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1857 bp->b_data = (caddr_t)finfo; 1858 1859 #ifdef FD_DEBUG 1860 if (fdc_debug) 1861 printf("fdformat: blkno 0x%x count %ld\n", 1862 bp->b_blkno, bp->b_bcount); 1863 #endif 1864 1865 /* now do the format */ 1866 fdstrategy(bp); 1867 1868 /* ...and wait for it to complete */ 1869 s = splbio(); 1870 while (!(bp->b_flags & B_DONE)) { 1871 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1872 if (rv == EWOULDBLOCK) 1873 break; 1874 } 1875 splx(s); 1876 1877 if (rv == EWOULDBLOCK) { 1878 /* timed out */ 1879 rv = EIO; 1880 biodone(bp); 1881 } 1882 if (bp->b_flags & B_ERROR) { 1883 rv = bp->b_error; 1884 } 1885 PRELE(p); 1886 free(bp, M_TEMP); 1887 return (rv); 1888 } 1889 1890 void 1891 fdgetdisklabel(dev) 1892 dev_t dev; 1893 { 1894 int unit = FDUNIT(dev), i; 1895 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1896 struct disklabel *lp = fd->sc_dk.dk_label; 1897 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1898 1899 bzero(lp, sizeof(struct disklabel)); 1900 bzero(lp, sizeof(struct cpu_disklabel)); 1901 1902 lp->d_type = DTYPE_FLOPPY; 1903 lp->d_secsize = FD_BSIZE(fd); 1904 lp->d_secpercyl = fd->sc_type->seccyl; 1905 lp->d_nsectors = fd->sc_type->sectrac; 1906 lp->d_ncylinders = fd->sc_type->cylinders; 1907 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1908 lp->d_rpm = 3600; /* XXX like it matters... */ 1909 1910 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1911 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1912 lp->d_interleave = 1; 1913 1914 lp->d_partitions[RAW_PART].p_offset = 0; 1915 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1916 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1917 lp->d_npartitions = RAW_PART + 1; 1918 1919 lp->d_magic = DISKMAGIC; 1920 lp->d_magic2 = DISKMAGIC; 1921 lp->d_checksum = dkcksum(lp); 1922 1923 /* 1924 * Call the generic disklabel extraction routine. If there's 1925 * not a label there, fake it. 1926 */ 1927 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1928 strncpy(lp->d_packname, "default label", 1929 sizeof(lp->d_packname)); 1930 /* 1931 * Reset the partition info; it might have gotten 1932 * trashed in readdisklabel(). 1933 * 1934 * XXX Why do we have to do this? readdisklabel() 1935 * should be safe... 1936 */ 1937 for (i = 0; i < MAXPARTITIONS; ++i) { 1938 lp->d_partitions[i].p_offset = 0; 1939 if (i == RAW_PART) { 1940 lp->d_partitions[i].p_size = 1941 lp->d_secpercyl * lp->d_ncylinders; 1942 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1943 } else { 1944 lp->d_partitions[i].p_size = 0; 1945 lp->d_partitions[i].p_fstype = FS_UNUSED; 1946 } 1947 } 1948 lp->d_npartitions = RAW_PART + 1; 1949 } 1950 } 1951 1952 void 1953 fd_do_eject(fd) 1954 struct fd_softc *fd; 1955 { 1956 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1957 1958 if (CPU_ISSUN4C) { 1959 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 1960 delay(10); 1961 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 1962 return; 1963 } 1964 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 1965 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 1966 *fdc->sc_reg_dor = dor | FDO_EJ; 1967 delay(10); 1968 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 1969 return; 1970 } 1971 } 1972 1973 #ifdef MEMORY_DISK_HOOKS 1974 int fd_read_md_image __P((size_t *, caddr_t *)); 1975 #endif 1976 1977 /* ARGSUSED */ 1978 void 1979 fd_mountroot_hook(dev) 1980 struct device *dev; 1981 { 1982 int c; 1983 1984 fd_do_eject((struct fd_softc *)dev); 1985 printf("Insert filesystem floppy and press return."); 1986 for (;;) { 1987 c = cngetc(); 1988 if ((c == '\r') || (c == '\n')) { 1989 printf("\n"); 1990 break; 1991 } 1992 } 1993 #ifdef MEMORY_DISK_HOOKS 1994 { 1995 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1996 md_read_image = fd_read_md_image; 1997 } 1998 #endif 1999 } 2000 2001 #ifdef MEMORY_DISK_HOOKS 2002 2003 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2004 2005 int 2006 fd_read_md_image(sizep, addrp) 2007 size_t *sizep; 2008 caddr_t *addrp; 2009 { 2010 struct buf buf, *bp = &buf; 2011 dev_t dev; 2012 off_t offset; 2013 caddr_t addr; 2014 2015 dev = makedev(54,0); /* XXX */ 2016 2017 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2018 *addrp = addr; 2019 2020 if (fdopen(dev, 0, S_IFCHR, NULL)) 2021 panic("fd: mountroot: fdopen"); 2022 2023 offset = 0; 2024 2025 for (;;) { 2026 bp->b_dev = dev; 2027 bp->b_error = 0; 2028 bp->b_resid = 0; 2029 bp->b_proc = NULL; 2030 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2031 bp->b_blkno = btodb(offset); 2032 bp->b_bcount = DEV_BSIZE; 2033 bp->b_data = addr; 2034 fdstrategy(bp); 2035 while ((bp->b_flags & B_DONE) == 0) { 2036 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2037 } 2038 if (bp->b_error) 2039 panic("fd: mountroot: fdread error %d", bp->b_error); 2040 2041 if (bp->b_resid != 0) 2042 break; 2043 2044 addr += DEV_BSIZE; 2045 offset += DEV_BSIZE; 2046 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2047 break; 2048 } 2049 (void)fdclose(dev, 0, S_IFCHR, NULL); 2050 *sizep = offset; 2051 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2052 return (0); 2053 } 2054 #endif 2055
Indexes created Fri Oct 03 02:09:57 GMT 2025