fd.c revision 1.56
1 /* $NetBSD: fd.c,v 1.56 1998/02/05 07:57:53 mrg 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 #if defined(UVM) 65 #include <vm/vm.h> 66 #include <uvm/uvm_extern.h> 67 #endif 68 69 #include <machine/cpu.h> 70 #include <machine/autoconf.h> 71 #include <machine/conf.h> 72 73 #include <sparc/sparc/auxreg.h> 74 #include <sparc/dev/fdreg.h> 75 #include <sparc/dev/fdvar.h> 76 77 #define FDUNIT(dev) (minor(dev) / 8) 78 #define FDTYPE(dev) (minor(dev) % 8) 79 80 /* XXX misuse a flag to identify format operation */ 81 #define B_FORMAT B_XXX 82 #define b_cylin b_resid 83 84 #define FD_DEBUG 85 #ifdef FD_DEBUG 86 int fdc_debug = 0; 87 #endif 88 89 enum fdc_state { 90 DEVIDLE = 0, 91 MOTORWAIT, 92 DOSEEK, 93 SEEKWAIT, 94 SEEKTIMEDOUT, 95 SEEKCOMPLETE, 96 DOIO, 97 IOCOMPLETE, 98 IOTIMEDOUT, 99 DORESET, 100 RESETCOMPLETE, 101 RESETTIMEDOUT, 102 DORECAL, 103 RECALWAIT, 104 RECALTIMEDOUT, 105 RECALCOMPLETE, 106 }; 107 108 /* software state, per controller */ 109 struct fdc_softc { 110 struct device sc_dev; /* boilerplate */ 111 struct intrhand sc_sih; 112 struct intrhand sc_hih; 113 caddr_t sc_reg; 114 struct fd_softc *sc_fd[4]; /* pointers to children */ 115 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 116 enum fdc_state sc_state; 117 int sc_flags; 118 #define FDC_82077 0x01 119 #define FDC_NEEDHEADSETTLE 0x02 120 #define FDC_EIS 0x04 121 int sc_errors; /* number of retries so far */ 122 int sc_overruns; /* number of DMA overruns */ 123 int sc_cfg; /* current configuration */ 124 struct fdcio sc_io; 125 #define sc_reg_msr sc_io.fdcio_reg_msr 126 #define sc_reg_fifo sc_io.fdcio_reg_fifo 127 #define sc_reg_dor sc_io.fdcio_reg_dor 128 #define sc_reg_drs sc_io.fdcio_reg_msr 129 #define sc_istate sc_io.fdcio_istate 130 #define sc_data sc_io.fdcio_data 131 #define sc_tc sc_io.fdcio_tc 132 #define sc_nstat sc_io.fdcio_nstat 133 #define sc_status sc_io.fdcio_status 134 #define sc_intrcnt sc_io.fdcio_intrcnt 135 }; 136 137 #ifndef FDC_C_HANDLER 138 extern struct fdcio *fdciop; 139 #endif 140 141 /* controller driver configuration */ 142 int fdcmatch __P((struct device *, struct cfdata *, void *)); 143 void fdcattach __P((struct device *, struct device *, void *)); 144 145 struct cfattach fdc_ca = { 146 sizeof(struct fdc_softc), fdcmatch, fdcattach 147 }; 148 149 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 150 151 /* 152 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 153 * we tell them apart. 154 */ 155 struct fd_type { 156 int sectrac; /* sectors per track */ 157 int heads; /* number of heads */ 158 int seccyl; /* sectors per cylinder */ 159 int secsize; /* size code for sectors */ 160 int datalen; /* data len when secsize = 0 */ 161 int steprate; /* step rate and head unload time */ 162 int gap1; /* gap len between sectors */ 163 int gap2; /* formatting gap */ 164 int cylinders; /* total num of cylinders */ 165 int size; /* size of disk in sectors */ 166 int step; /* steps per cylinder */ 167 int rate; /* transfer speed code */ 168 int fillbyte; /* format fill byte */ 169 int interleave; /* interleave factor (formatting) */ 170 char *name; 171 }; 172 173 /* The order of entries in the following table is important -- BEWARE! */ 174 struct fd_type fd_types[] = { 175 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 176 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 177 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 178 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 179 }; 180 181 /* software state, per disk (with up to 4 disks per ctlr) */ 182 struct fd_softc { 183 struct device sc_dv; /* generic device info */ 184 struct disk sc_dk; /* generic disk info */ 185 186 struct fd_type *sc_deftype; /* default type descriptor */ 187 struct fd_type *sc_type; /* current type descriptor */ 188 189 daddr_t sc_blkno; /* starting block number */ 190 int sc_bcount; /* byte count left */ 191 int sc_skip; /* bytes already transferred */ 192 int sc_nblks; /* number of blocks currently tranferring */ 193 int sc_nbytes; /* number of bytes currently tranferring */ 194 195 int sc_drive; /* physical unit number */ 196 int sc_flags; 197 #define FD_OPEN 0x01 /* it's open */ 198 #define FD_MOTOR 0x02 /* motor should be on */ 199 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 200 int sc_cylin; /* where we think the head is */ 201 int sc_opts; /* user-set options */ 202 203 void *sc_sdhook; /* shutdownhook cookie */ 204 205 TAILQ_ENTRY(fd_softc) sc_drivechain; 206 int sc_ops; /* I/O ops since last switch */ 207 struct buf sc_q; /* head of buf chain */ 208 }; 209 210 /* floppy driver configuration */ 211 int fdmatch __P((struct device *, struct cfdata *, void *)); 212 void fdattach __P((struct device *, struct device *, void *)); 213 214 struct cfattach fd_ca = { 215 sizeof(struct fd_softc), fdmatch, fdattach 216 }; 217 218 extern struct cfdriver fd_cd; 219 220 void fdgetdisklabel __P((dev_t)); 221 int fd_get_parms __P((struct fd_softc *)); 222 void fdstrategy __P((struct buf *)); 223 void fdstart __P((struct fd_softc *)); 224 int fdprint __P((void *, const char *)); 225 226 struct dkdriver fddkdriver = { fdstrategy }; 227 228 struct fd_type *fd_nvtotype __P((char *, int, int)); 229 void fd_set_motor __P((struct fdc_softc *fdc)); 230 void fd_motor_off __P((void *arg)); 231 void fd_motor_on __P((void *arg)); 232 int fdcresult __P((struct fdc_softc *fdc)); 233 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 234 void fdcstart __P((struct fdc_softc *fdc)); 235 void fdcstatus __P((struct device *dv, int n, char *s)); 236 void fdc_reset __P((struct fdc_softc *fdc)); 237 void fdctimeout __P((void *arg)); 238 void fdcpseudointr __P((void *arg)); 239 #ifdef FDC_C_HANDLER 240 int fdchwintr __P((struct fdc_softc *)); 241 #else 242 void fdchwintr __P((void)); 243 #endif 244 int fdcswintr __P((struct fdc_softc *)); 245 int fdcstate __P((struct fdc_softc *)); 246 void fdcretry __P((struct fdc_softc *fdc)); 247 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 248 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 249 void fd_do_eject __P((struct fd_softc *)); 250 void fd_mountroot_hook __P((struct device *)); 251 static void fdconf __P((struct fdc_softc *)); 252 253 #if PIL_FDSOFT == 4 254 #define IE_FDSOFT IE_L4 255 #else 256 #error 4 257 #endif 258 259 #ifdef FDC_C_HANDLER 260 #if defined(SUN4M) 261 #define FD_SET_SWINTR do { \ 262 if (CPU_ISSUN4M) \ 263 raise(0, PIL_FDSOFT); \ 264 else \ 265 ienab_bis(IE_L4); \ 266 } while(0) 267 #else 268 #define AUDIO_SET_SWINTR ienab_bis(IE_FDSOFT) 269 #endif /* defined(SUN4M) */ 270 #endif /* FDC_C_HANDLER */ 271 272 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 273 274 int 275 fdcmatch(parent, match, aux) 276 struct device *parent; 277 struct cfdata *match; 278 void *aux; 279 { 280 register struct confargs *ca = aux; 281 register struct romaux *ra = &ca->ca_ra; 282 283 /* 284 * Floppy doesn't exist on sun4. 285 */ 286 if (CPU_ISSUN4) 287 return (0); 288 289 /* 290 * Floppy controller is on mainbus on sun4c. 291 */ 292 if ((CPU_ISSUN4C) && (ca->ca_bustype != BUS_MAIN)) 293 return (0); 294 295 /* 296 * Floppy controller is on obio on sun4m. 297 */ 298 if ((CPU_ISSUN4M) && (ca->ca_bustype != BUS_OBIO)) 299 return (0); 300 301 /* Sun PROMs call the controller an "fd" or "SUNW,fdtwo" */ 302 if (strcmp(OBP_FDNAME, ra->ra_name)) 303 return (0); 304 305 if (ca->ca_ra.ra_vaddr && 306 probeget(ca->ca_ra.ra_vaddr, 1) == -1) { 307 return (0); 308 } 309 310 return (1); 311 } 312 313 /* 314 * Arguments passed between fdcattach and fdprobe. 315 */ 316 struct fdc_attach_args { 317 int fa_drive; 318 struct bootpath *fa_bootpath; 319 struct fd_type *fa_deftype; 320 }; 321 322 /* 323 * Print the location of a disk drive (called just before attaching the 324 * the drive). If `fdc' is not NULL, the drive was found but was not 325 * in the system config file; print the drive name as well. 326 * Return QUIET (config_find ignores this if the device was configured) to 327 * avoid printing `fdN not configured' messages. 328 */ 329 int 330 fdprint(aux, fdc) 331 void *aux; 332 const char *fdc; 333 { 334 register struct fdc_attach_args *fa = aux; 335 336 if (!fdc) 337 printf(" drive %d", fa->fa_drive); 338 return (QUIET); 339 } 340 341 static void 342 fdconf(fdc) 343 struct fdc_softc *fdc; 344 { 345 int vroom; 346 347 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 348 return; 349 350 /* 351 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 352 * the PROM thinks is appropriate. 353 */ 354 if ((vroom = fdc->sc_status[7]) == 0) 355 vroom = 0x64; 356 357 /* Configure controller to use FIFO and Implied Seek */ 358 out_fdc(fdc, NE7CMD_CFG); 359 out_fdc(fdc, vroom); 360 out_fdc(fdc, fdc->sc_cfg); 361 out_fdc(fdc, 0); /* PRETRK */ 362 /* No result phase */ 363 } 364 365 void 366 fdcattach(parent, self, aux) 367 struct device *parent, *self; 368 void *aux; 369 { 370 register struct confargs *ca = aux; 371 struct fdc_softc *fdc = (void *)self; 372 struct fdc_attach_args fa; 373 struct bootpath *bp; 374 int pri; 375 char code; 376 377 if (ca->ca_ra.ra_vaddr) 378 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 379 else 380 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_reg, 0, 381 ca->ca_ra.ra_len); 382 383 fdc->sc_state = DEVIDLE; 384 fdc->sc_istate = ISTATE_IDLE; 385 fdc->sc_flags |= FDC_EIS; 386 TAILQ_INIT(&fdc->sc_drives); 387 388 pri = ca->ca_ra.ra_intr[0].int_pri; 389 #ifdef FDC_C_HANDLER 390 fdc->sc_hih.ih_fun = (void *)fdchwintr; 391 fdc->sc_hih.ih_arg = fdc; 392 intr_establish(pri, &fdc->sc_hih); 393 #else 394 fdciop = &fdc->sc_io; 395 intr_fasttrap(pri, fdchwintr); 396 #endif 397 fdc->sc_sih.ih_fun = (void *)fdcswintr; 398 fdc->sc_sih.ih_arg = fdc; 399 intr_establish(PIL_FDSOFT, &fdc->sc_sih); 400 401 /* Assume a 82077 */ 402 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 403 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 404 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 405 406 code = '7'; 407 if (*fdc->sc_reg_dor == NE7_RQM) { 408 /* 409 * This hack from Chris Torek: apparently DOR really 410 * addresses MSR/DRS on a 82072. 411 * We used to rely on the VERSION command to tell the 412 * difference (which did not work). 413 */ 414 *fdc->sc_reg_dor = FDC_250KBPS; 415 if (*fdc->sc_reg_dor == NE7_RQM) 416 code = '2'; 417 } 418 if (code == '7') { 419 fdc->sc_flags |= FDC_82077; 420 } else { 421 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 422 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 423 fdc->sc_reg_dor = 0; 424 } 425 426 #ifdef FD_DEBUG 427 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 428 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 429 if (fdc_debug) 430 printf("[version cmd]"); 431 } 432 #endif 433 434 /* 435 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 436 * Note: CFG_EFIFO is active-low, initial threshold value: 8 437 */ 438 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 439 fdconf(fdc); 440 441 if (fdc->sc_flags & FDC_82077) { 442 /* Lock configuration across soft resets. */ 443 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 444 if (fdcresult(fdc) != 1) 445 printf(" CFGLOCK: unexpected response"); 446 } 447 448 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 449 450 printf(" pri %d, softpri %d: chip 8207%c\n", pri, PIL_FDSOFT, code); 451 452 /* 453 * Controller and drives are represented by one and the same 454 * Openprom node, so we can as well check for the floppy boots here. 455 */ 456 fa.fa_bootpath = 0; 457 if ((bp = ca->ca_ra.ra_bp) && strcmp(bp->name, OBP_FDNAME) == 0) { 458 459 switch (ca->ca_bustype) { 460 case BUS_MAIN: 461 /* 462 * We can get the bootpath in several different 463 * formats! The faked v1 bootpath looks like /fd@0,0. 464 * The v2 bootpath is either just /fd0, in which case 465 * `bp->val[0]' will have been set to -1, or /fd@x,y 466 * where <x,y> is the prom address specifier. 467 */ 468 if (((bp->val[0] == ca->ca_ra.ra_iospace) && 469 (bp->val[1] == (int)ca->ca_ra.ra_paddr)) || 470 471 ((bp->val[0] == -1) && /* v2: /fd0 */ 472 (bp->val[1] == 0)) || 473 474 ((bp->val[0] == 0) && /* v1: /fd@0,0 */ 475 (bp->val[1] == 0)) 476 ) 477 fa.fa_bootpath = bp; 478 break; 479 480 case BUS_OBIO: 481 /* 482 * floppy controller on obio (such as on the sun4m), 483 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 484 * We use "slot, offset" to determine if this is the 485 * right one. 486 */ 487 if ((bp->val[0] == ca->ca_slot) && 488 (bp->val[1] == ca->ca_offset)) 489 fa.fa_bootpath = bp; 490 break; 491 } 492 493 } 494 495 /* physical limit: four drives per controller. */ 496 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 497 fa.fa_deftype = NULL; /* unknown */ 498 fa.fa_deftype = &fd_types[0]; /* XXX */ 499 (void)config_found(self, (void *)&fa, fdprint); 500 } 501 502 bootpath_store(1, NULL); 503 } 504 505 int 506 fdmatch(parent, match, aux) 507 struct device *parent; 508 struct cfdata *match; 509 void *aux; 510 { 511 struct fdc_softc *fdc = (void *)parent; 512 struct fdc_attach_args *fa = aux; 513 int drive = fa->fa_drive; 514 int n, ok; 515 516 if (drive > 0) 517 /* XXX - for now, punt on more than one drive */ 518 return (0); 519 520 if (fdc->sc_flags & FDC_82077) { 521 /* select drive and turn on motor */ 522 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 523 /* wait for motor to spin up */ 524 delay(250000); 525 } else { 526 auxregbisc(AUXIO4C_FDS, 0); 527 } 528 fdc->sc_nstat = 0; 529 out_fdc(fdc, NE7CMD_RECAL); 530 out_fdc(fdc, drive); 531 /* wait for recalibrate */ 532 for (n = 0; n < 10000; n++) { 533 delay(1000); 534 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 535 /* wait a bit longer till device *really* is ready */ 536 delay(100000); 537 if (out_fdc(fdc, NE7CMD_SENSEI)) 538 break; 539 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 540 /* 541 * Got `invalid command'; we interpret it 542 * to mean that the re-calibrate hasn't in 543 * fact finished yet 544 */ 545 continue; 546 break; 547 } 548 } 549 n = fdc->sc_nstat; 550 #ifdef FD_DEBUG 551 if (fdc_debug) { 552 int i; 553 printf("fdprobe: %d stati:", n); 554 for (i = 0; i < n; i++) 555 printf(" 0x%x", fdc->sc_status[i]); 556 printf("\n"); 557 } 558 #endif 559 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 560 561 /* turn off motor */ 562 if (fdc->sc_flags & FDC_82077) { 563 /* deselect drive and turn motor off */ 564 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 565 } else { 566 auxregbisc(0, AUXIO4C_FDS); 567 } 568 569 return (ok); 570 } 571 572 /* 573 * Controller is working, and drive responded. Attach it. 574 */ 575 void 576 fdattach(parent, self, aux) 577 struct device *parent, *self; 578 void *aux; 579 { 580 struct fdc_softc *fdc = (void *)parent; 581 struct fd_softc *fd = (void *)self; 582 struct fdc_attach_args *fa = aux; 583 struct fd_type *type = fa->fa_deftype; 584 int drive = fa->fa_drive; 585 586 /* XXX Allow `flags' to override device type? */ 587 588 if (type) 589 printf(": %s %d cyl, %d head, %d sec\n", type->name, 590 type->cylinders, type->heads, type->sectrac); 591 else 592 printf(": density unknown\n"); 593 594 fd->sc_cylin = -1; 595 fd->sc_drive = drive; 596 fd->sc_deftype = type; 597 fdc->sc_fd[drive] = fd; 598 599 out_fdc(fdc, NE7CMD_SPECIFY); 600 out_fdc(fdc, type->steprate); 601 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 602 603 /* 604 * Initialize and attach the disk structure. 605 */ 606 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 607 fd->sc_dk.dk_driver = &fddkdriver; 608 disk_attach(&fd->sc_dk); 609 610 /* 611 * We're told if we're the boot device in fdcattach(). 612 */ 613 if (fa->fa_bootpath) 614 fa->fa_bootpath->dev = &fd->sc_dv; 615 616 /* 617 * Establish a mountroot_hook anyway in case we booted 618 * with RB_ASKNAME and get selected as the boot device. 619 */ 620 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 621 622 /* Make sure the drive motor gets turned off at shutdown time. */ 623 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 624 625 /* XXX Need to do some more fiddling with sc_dk. */ 626 dk_establish(&fd->sc_dk, &fd->sc_dv); 627 } 628 629 __inline struct fd_type * 630 fd_dev_to_type(fd, dev) 631 struct fd_softc *fd; 632 dev_t dev; 633 { 634 int type = FDTYPE(dev); 635 636 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 637 return (NULL); 638 return (type ? &fd_types[type - 1] : fd->sc_deftype); 639 } 640 641 void 642 fdstrategy(bp) 643 register struct buf *bp; /* IO operation to perform */ 644 { 645 struct fd_softc *fd; 646 int unit = FDUNIT(bp->b_dev); 647 int sz; 648 int s; 649 650 /* Valid unit, controller, and request? */ 651 if (unit >= fd_cd.cd_ndevs || 652 (fd = fd_cd.cd_devs[unit]) == 0 || 653 bp->b_blkno < 0 || 654 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 655 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 656 (bp->b_flags & B_FORMAT) == 0)) { 657 bp->b_error = EINVAL; 658 goto bad; 659 } 660 661 /* If it's a null transfer, return immediately. */ 662 if (bp->b_bcount == 0) 663 goto done; 664 665 sz = howmany(bp->b_bcount, DEV_BSIZE); 666 667 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 668 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 669 - bp->b_blkno; 670 if (sz == 0) { 671 /* If exactly at end of disk, return EOF. */ 672 bp->b_resid = bp->b_bcount; 673 goto done; 674 } 675 if (sz < 0) { 676 /* If past end of disk, return EINVAL. */ 677 bp->b_error = EINVAL; 678 goto bad; 679 } 680 /* Otherwise, truncate request. */ 681 bp->b_bcount = sz << DEV_BSHIFT; 682 } 683 684 bp->b_cylin = (bp->b_blkno * DEV_BSIZE) / 685 (FD_BSIZE(fd) * fd->sc_type->seccyl); 686 687 #ifdef FD_DEBUG 688 if (fdc_debug > 1) 689 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 690 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 691 #endif 692 693 /* Queue transfer on drive, activate drive and controller if idle. */ 694 s = splbio(); 695 disksort(&fd->sc_q, bp); 696 untimeout(fd_motor_off, fd); /* a good idea */ 697 if (!fd->sc_q.b_active) 698 fdstart(fd); 699 #ifdef DIAGNOSTIC 700 else { 701 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 702 if (fdc->sc_state == DEVIDLE) { 703 printf("fdstrategy: controller inactive\n"); 704 fdcstart(fdc); 705 } 706 } 707 #endif 708 splx(s); 709 return; 710 711 bad: 712 bp->b_flags |= B_ERROR; 713 done: 714 /* Toss transfer; we're done early. */ 715 biodone(bp); 716 } 717 718 void 719 fdstart(fd) 720 struct fd_softc *fd; 721 { 722 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 723 int active = fdc->sc_drives.tqh_first != 0; 724 725 /* Link into controller queue. */ 726 fd->sc_q.b_active = 1; 727 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 728 729 /* If controller not already active, start it. */ 730 if (!active) 731 fdcstart(fdc); 732 } 733 734 void 735 fdfinish(fd, bp) 736 struct fd_softc *fd; 737 struct buf *bp; 738 { 739 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 740 741 /* 742 * Move this drive to the end of the queue to give others a `fair' 743 * chance. We only force a switch if N operations are completed while 744 * another drive is waiting to be serviced, since there is a long motor 745 * startup delay whenever we switch. 746 */ 747 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 748 fd->sc_ops = 0; 749 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 750 if (bp->b_actf) { 751 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 752 } else 753 fd->sc_q.b_active = 0; 754 } 755 bp->b_resid = fd->sc_bcount; 756 fd->sc_skip = 0; 757 fd->sc_q.b_actf = bp->b_actf; 758 759 biodone(bp); 760 /* turn off motor 5s from now */ 761 timeout(fd_motor_off, fd, 5 * hz); 762 fdc->sc_state = DEVIDLE; 763 } 764 765 void 766 fdc_reset(fdc) 767 struct fdc_softc *fdc; 768 { 769 if (fdc->sc_flags & FDC_82077) { 770 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 771 } 772 773 *fdc->sc_reg_drs = DRS_RESET; 774 delay(10); 775 *fdc->sc_reg_drs = 0; 776 777 if (fdc->sc_flags & FDC_82077) { 778 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 779 } 780 #ifdef FD_DEBUG 781 if (fdc_debug) 782 printf("fdc reset\n"); 783 #endif 784 } 785 786 void 787 fd_set_motor(fdc) 788 struct fdc_softc *fdc; 789 { 790 struct fd_softc *fd; 791 u_char status; 792 int n; 793 794 if (fdc->sc_flags & FDC_82077) { 795 status = FDO_FRST | FDO_FDMAEN; 796 if ((fd = fdc->sc_drives.tqh_first) != NULL) 797 status |= fd->sc_drive; 798 799 for (n = 0; n < 4; n++) 800 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 801 status |= FDO_MOEN(n); 802 *fdc->sc_reg_dor = status; 803 } else { 804 int on = 0; 805 806 for (n = 0; n < 4; n++) 807 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 808 on = 1; 809 if (on) { 810 auxregbisc(AUXIO4C_FDS, 0); 811 } else { 812 auxregbisc(0, AUXIO4C_FDS); 813 } 814 } 815 } 816 817 void 818 fd_motor_off(arg) 819 void *arg; 820 { 821 struct fd_softc *fd = arg; 822 int s; 823 824 s = splbio(); 825 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 826 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 827 splx(s); 828 } 829 830 void 831 fd_motor_on(arg) 832 void *arg; 833 { 834 struct fd_softc *fd = arg; 835 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 836 int s; 837 838 s = splbio(); 839 fd->sc_flags &= ~FD_MOTOR_WAIT; 840 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 841 (void) fdcstate(fdc); 842 splx(s); 843 } 844 845 int 846 fdcresult(fdc) 847 struct fdc_softc *fdc; 848 { 849 u_char i; 850 int j = 100000, 851 n = 0; 852 853 for (; j; j--) { 854 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 855 if (i == NE7_RQM) 856 return (fdc->sc_nstat = n); 857 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 858 if (n >= sizeof(fdc->sc_status)) { 859 log(LOG_ERR, "fdcresult: overrun\n"); 860 return (-1); 861 } 862 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 863 } else 864 delay(10); 865 } 866 log(LOG_ERR, "fdcresult: timeout\n"); 867 return (fdc->sc_nstat = -1); 868 } 869 870 int 871 out_fdc(fdc, x) 872 struct fdc_softc *fdc; 873 u_char x; 874 { 875 int i = 100000; 876 877 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 878 delay(1); 879 if (i <= 0) 880 return (-1); 881 882 *fdc->sc_reg_fifo = x; 883 return (0); 884 } 885 886 int 887 fdopen(dev, flags, fmt, p) 888 dev_t dev; 889 int flags, fmt; 890 struct proc *p; 891 { 892 int unit, pmask; 893 struct fd_softc *fd; 894 struct fd_type *type; 895 896 unit = FDUNIT(dev); 897 if (unit >= fd_cd.cd_ndevs) 898 return (ENXIO); 899 fd = fd_cd.cd_devs[unit]; 900 if (fd == 0) 901 return (ENXIO); 902 type = fd_dev_to_type(fd, dev); 903 if (type == NULL) 904 return (ENXIO); 905 906 if ((fd->sc_flags & FD_OPEN) != 0 && 907 fd->sc_type != type) 908 return (EBUSY); 909 910 fd->sc_type = type; 911 fd->sc_cylin = -1; 912 fd->sc_flags |= FD_OPEN; 913 914 /* 915 * Only update the disklabel if we're not open anywhere else. 916 */ 917 if (fd->sc_dk.dk_openmask == 0) 918 fdgetdisklabel(dev); 919 920 pmask = (1 << DISKPART(dev)); 921 922 switch (fmt) { 923 case S_IFCHR: 924 fd->sc_dk.dk_copenmask |= pmask; 925 break; 926 927 case S_IFBLK: 928 fd->sc_dk.dk_bopenmask |= pmask; 929 break; 930 } 931 fd->sc_dk.dk_openmask = 932 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 933 934 return (0); 935 } 936 937 int 938 fdclose(dev, flags, fmt, p) 939 dev_t dev; 940 int flags, fmt; 941 struct proc *p; 942 { 943 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 944 int pmask = (1 << DISKPART(dev)); 945 946 fd->sc_flags &= ~FD_OPEN; 947 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 948 949 switch (fmt) { 950 case S_IFCHR: 951 fd->sc_dk.dk_copenmask &= ~pmask; 952 break; 953 954 case S_IFBLK: 955 fd->sc_dk.dk_bopenmask &= ~pmask; 956 break; 957 } 958 fd->sc_dk.dk_openmask = 959 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 960 961 return (0); 962 } 963 964 int 965 fdread(dev, uio, flag) 966 dev_t dev; 967 struct uio *uio; 968 int flag; 969 { 970 971 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 972 } 973 974 int 975 fdwrite(dev, uio, flag) 976 dev_t dev; 977 struct uio *uio; 978 int flag; 979 { 980 981 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 982 } 983 984 void 985 fdcstart(fdc) 986 struct fdc_softc *fdc; 987 { 988 989 #ifdef DIAGNOSTIC 990 /* only got here if controller's drive queue was inactive; should 991 be in idle state */ 992 if (fdc->sc_state != DEVIDLE) { 993 printf("fdcstart: not idle\n"); 994 return; 995 } 996 #endif 997 (void) fdcstate(fdc); 998 } 999 1000 void 1001 fdcstatus(dv, n, s) 1002 struct device *dv; 1003 int n; 1004 char *s; 1005 { 1006 struct fdc_softc *fdc = (void *)dv->dv_parent; 1007 char bits[64]; 1008 #if 0 1009 /* 1010 * A 82072 seems to return <invalid command> on 1011 * gratuitous Sense Interrupt commands. 1012 */ 1013 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1014 out_fdc(fdc, NE7CMD_SENSEI); 1015 (void) fdcresult(fdc); 1016 n = 2; 1017 } 1018 #endif 1019 1020 /* Just print last status */ 1021 n = fdc->sc_nstat; 1022 1023 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1024 1025 switch (n) { 1026 case 0: 1027 printf("\n"); 1028 break; 1029 case 2: 1030 printf(" (st0 %s cyl %d)\n", 1031 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1032 bits, sizeof(bits)), fdc->sc_status[1]); 1033 break; 1034 case 7: 1035 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1036 NE7_ST0BITS, bits, sizeof(bits))); 1037 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1038 NE7_ST1BITS, bits, sizeof(bits))); 1039 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1040 NE7_ST2BITS, bits, sizeof(bits))); 1041 printf(" cyl %d head %d sec %d)\n", 1042 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1043 break; 1044 #ifdef DIAGNOSTIC 1045 default: 1046 printf(" fdcstatus: weird size: %d\n", n); 1047 break; 1048 #endif 1049 } 1050 } 1051 1052 void 1053 fdctimeout(arg) 1054 void *arg; 1055 { 1056 struct fdc_softc *fdc = arg; 1057 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1058 int s; 1059 1060 s = splbio(); 1061 fdcstatus(&fd->sc_dv, 0, "timeout"); 1062 1063 if (fd->sc_q.b_actf) 1064 fdc->sc_state++; 1065 else 1066 fdc->sc_state = DEVIDLE; 1067 1068 (void) fdcstate(fdc); 1069 splx(s); 1070 } 1071 1072 void 1073 fdcpseudointr(arg) 1074 void *arg; 1075 { 1076 struct fdc_softc *fdc = arg; 1077 int s; 1078 1079 /* Just ensure it has the right spl. */ 1080 s = splbio(); 1081 (void) fdcstate(fdc); 1082 splx(s); 1083 } 1084 1085 1086 #ifdef FDC_C_HANDLER 1087 /* 1088 * hardware interrupt entry point: must be converted to `fast' 1089 * (in-window) handler. 1090 */ 1091 int 1092 fdchwintr(fdc) 1093 struct fdc_softc *fdc; 1094 { 1095 1096 switch (fdc->sc_istate) { 1097 case ISTATE_IDLE: 1098 return (0); 1099 case ISTATE_SENSEI: 1100 out_fdc(fdc, NE7CMD_SENSEI); 1101 fdcresult(fdc); 1102 fdc->sc_istate = ISTATE_IDLE; 1103 FD_SET_SWINTR; 1104 return (1); 1105 case ISTATE_SPURIOUS: 1106 fdcresult(fdc); 1107 fdc->sc_istate = ISTATE_SPURIOUS; 1108 printf("fdc: stray hard interrupt... "); 1109 FD_SET_SWINTR; 1110 return (1); 1111 case ISTATE_DMA: 1112 break; 1113 default: 1114 printf("fdc: goofed ...\n"); 1115 return (1); 1116 } 1117 1118 for (;;) { 1119 register int msr; 1120 1121 msr = *fdc->sc_reg_msr; 1122 1123 if ((msr & NE7_RQM) == 0) 1124 break; 1125 1126 if ((msr & NE7_NDM) == 0) { 1127 fdcresult(fdc); 1128 fdc->sc_istate = ISTATE_IDLE; 1129 ienab_bis(IE_FDSOFT); 1130 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1131 break; 1132 } 1133 1134 if (msr & NE7_DIO) { 1135 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1136 } else { 1137 *fdc->sc_reg_fifo = *fdc->sc_data++; 1138 } 1139 if (--fdc->sc_tc == 0) { 1140 fdc->sc_istate = ISTATE_DONE; 1141 FTC_FLIP; 1142 fdcresult(fdc); 1143 FD_SET_SWINTR; 1144 break; 1145 } 1146 } 1147 return (1); 1148 } 1149 #endif 1150 1151 int 1152 fdcswintr(fdc) 1153 struct fdc_softc *fdc; 1154 { 1155 int s; 1156 1157 if (fdc->sc_istate != ISTATE_DONE) 1158 return (0); 1159 1160 fdc->sc_istate = ISTATE_IDLE; 1161 s = splbio(); 1162 fdcstate(fdc); 1163 splx(s); 1164 return (1); 1165 } 1166 1167 int 1168 fdcstate(fdc) 1169 struct fdc_softc *fdc; 1170 { 1171 #define st0 fdc->sc_status[0] 1172 #define st1 fdc->sc_status[1] 1173 #define cyl fdc->sc_status[1] 1174 #define OUT_FDC(fdc, c, s) \ 1175 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1176 1177 struct fd_softc *fd; 1178 struct buf *bp; 1179 int read, head, sec, nblks; 1180 struct fd_type *type; 1181 struct ne7_fd_formb *finfo = NULL; 1182 1183 1184 if (fdc->sc_istate != ISTATE_IDLE) { 1185 /* Trouble... */ 1186 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1187 fdc->sc_state, fdc->sc_istate); 1188 fdc->sc_istate = ISTATE_IDLE; 1189 if (fdc->sc_state == RESETCOMPLETE || 1190 fdc->sc_state == RESETTIMEDOUT) { 1191 panic("fdcintr: spurious interrupt can't be cleared"); 1192 } 1193 goto doreset; 1194 } 1195 1196 loop: 1197 /* Is there a drive for the controller to do a transfer with? */ 1198 fd = fdc->sc_drives.tqh_first; 1199 if (fd == NULL) { 1200 fdc->sc_state = DEVIDLE; 1201 return (0); 1202 } 1203 1204 /* Is there a transfer to this drive? If not, deactivate drive. */ 1205 bp = fd->sc_q.b_actf; 1206 if (bp == NULL) { 1207 fd->sc_ops = 0; 1208 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1209 fd->sc_q.b_active = 0; 1210 goto loop; 1211 } 1212 1213 if (bp->b_flags & B_FORMAT) 1214 finfo = (struct ne7_fd_formb *)bp->b_data; 1215 1216 switch (fdc->sc_state) { 1217 case DEVIDLE: 1218 fdc->sc_errors = 0; 1219 fd->sc_skip = 0; 1220 fd->sc_bcount = bp->b_bcount; 1221 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1222 untimeout(fd_motor_off, fd); 1223 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1224 fdc->sc_state = MOTORWAIT; 1225 return (1); 1226 } 1227 if ((fd->sc_flags & FD_MOTOR) == 0) { 1228 /* Turn on the motor, being careful about pairing. */ 1229 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1230 if (ofd && ofd->sc_flags & FD_MOTOR) { 1231 untimeout(fd_motor_off, ofd); 1232 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1233 } 1234 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1235 fd_set_motor(fdc); 1236 fdc->sc_state = MOTORWAIT; 1237 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1238 /* Allow .25s for motor to stabilize. */ 1239 timeout(fd_motor_on, fd, hz / 4); 1240 } else { 1241 fd->sc_flags &= ~FD_MOTOR_WAIT; 1242 goto loop; 1243 } 1244 return (1); 1245 } 1246 /* Make sure the right drive is selected. */ 1247 fd_set_motor(fdc); 1248 1249 /*FALLTHROUGH*/ 1250 case DOSEEK: 1251 doseek: 1252 if ((fdc->sc_flags & FDC_EIS) && 1253 (bp->b_flags & B_FORMAT) == 0) { 1254 fd->sc_cylin = bp->b_cylin; 1255 /* We use implied seek */ 1256 goto doio; 1257 } 1258 1259 if (fd->sc_cylin == bp->b_cylin) 1260 goto doio; 1261 1262 /* specify command */ 1263 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1264 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1265 /* XXX head load time == 6ms */ 1266 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1267 1268 fdc->sc_istate = ISTATE_SENSEI; 1269 /* seek function */ 1270 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1271 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1272 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1273 1274 fd->sc_cylin = -1; 1275 fdc->sc_state = SEEKWAIT; 1276 fdc->sc_nstat = 0; 1277 1278 fd->sc_dk.dk_seek++; 1279 disk_busy(&fd->sc_dk); 1280 1281 timeout(fdctimeout, fdc, 4 * hz); 1282 return (1); 1283 1284 case DOIO: 1285 doio: 1286 if (finfo != NULL) 1287 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1288 (char *)finfo; 1289 type = fd->sc_type; 1290 sec = fd->sc_blkno % type->seccyl; 1291 nblks = type->seccyl - sec; 1292 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1293 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1294 fd->sc_nblks = nblks; 1295 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1296 head = sec / type->sectrac; 1297 sec -= head * type->sectrac; 1298 #ifdef DIAGNOSTIC 1299 {int block; 1300 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1301 if (block != fd->sc_blkno) { 1302 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1303 #ifdef DDB 1304 Debugger(); 1305 #endif 1306 }} 1307 #endif 1308 read = bp->b_flags & B_READ; 1309 1310 /* Setup for pseudo DMA */ 1311 fdc->sc_data = bp->b_data + fd->sc_skip; 1312 fdc->sc_tc = fd->sc_nbytes; 1313 1314 *fdc->sc_reg_drs = type->rate; 1315 #ifdef FD_DEBUG 1316 if (fdc_debug > 1) 1317 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1318 read ? "read" : "write", fd->sc_drive, 1319 fd->sc_cylin, head, sec, nblks); 1320 #endif 1321 fdc->sc_state = IOCOMPLETE; 1322 fdc->sc_istate = ISTATE_DMA; 1323 fdc->sc_nstat = 0; 1324 if (finfo != NULL) { 1325 /* formatting */ 1326 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1327 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1328 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1329 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1330 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1331 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1332 } else { 1333 if (read) 1334 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1335 else 1336 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1337 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1338 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1339 OUT_FDC(fdc, head, IOTIMEDOUT); 1340 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1341 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1342 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1343 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1344 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1345 } 1346 1347 disk_busy(&fd->sc_dk); 1348 1349 /* allow 2 seconds for operation */ 1350 timeout(fdctimeout, fdc, 2 * hz); 1351 return (1); /* will return later */ 1352 1353 case SEEKWAIT: 1354 untimeout(fdctimeout, fdc); 1355 fdc->sc_state = SEEKCOMPLETE; 1356 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1357 /* allow 1/50 second for heads to settle */ 1358 timeout(fdcpseudointr, fdc, hz / 50); 1359 return (1); /* will return later */ 1360 } 1361 /*FALLTHROUGH*/ 1362 case SEEKCOMPLETE: 1363 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1364 1365 /* Make sure seek really happened. */ 1366 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1367 cyl != bp->b_cylin * fd->sc_type->step) { 1368 #ifdef FD_DEBUG 1369 if (fdc_debug) 1370 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1371 #endif 1372 fdcretry(fdc); 1373 goto loop; 1374 } 1375 fd->sc_cylin = bp->b_cylin; 1376 goto doio; 1377 1378 case IOTIMEDOUT: 1379 FTC_FLIP; 1380 (void)fdcresult(fdc); 1381 /*FALLTHROUGH*/ 1382 case SEEKTIMEDOUT: 1383 case RECALTIMEDOUT: 1384 case RESETTIMEDOUT: 1385 fdcretry(fdc); 1386 goto loop; 1387 1388 case IOCOMPLETE: /* IO DONE, post-analyze */ 1389 untimeout(fdctimeout, fdc); 1390 1391 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1392 1393 if (fdc->sc_nstat != 7 || st1 != 0 || 1394 ((st0 & 0xf8) != 0 && 1395 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1396 #ifdef FD_DEBUG 1397 if (fdc_debug) { 1398 fdcstatus(&fd->sc_dv, 7, 1399 bp->b_flags & B_READ 1400 ? "read failed" : "write failed"); 1401 printf("blkno %d nblks %d nstat %d tc %d\n", 1402 fd->sc_blkno, fd->sc_nblks, 1403 fdc->sc_nstat, fdc->sc_tc); 1404 } 1405 #endif 1406 if (fdc->sc_nstat == 7 && 1407 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1408 1409 /* 1410 * Silently retry overruns if no other 1411 * error bit is set. Adjust threshold. 1412 */ 1413 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1414 if (thr < 15) { 1415 thr++; 1416 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1417 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1418 #ifdef FD_DEBUG 1419 if (fdc_debug) 1420 printf("fdc: %d -> threshold\n", thr); 1421 #endif 1422 fdconf(fdc); 1423 fdc->sc_overruns = 0; 1424 } 1425 if (++fdc->sc_overruns < 3) { 1426 fdc->sc_state = DOIO; 1427 goto loop; 1428 } 1429 } 1430 fdcretry(fdc); 1431 goto loop; 1432 } 1433 if (fdc->sc_errors) { 1434 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1435 fd->sc_skip / FD_BSIZE(fd), 1436 (struct disklabel *)NULL); 1437 printf("\n"); 1438 fdc->sc_errors = 0; 1439 } else { 1440 if (--fdc->sc_overruns < -20) { 1441 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1442 if (thr > 0) { 1443 thr--; 1444 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1445 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1446 #ifdef FD_DEBUG 1447 if (fdc_debug) 1448 printf("fdc: %d -> threshold\n", thr); 1449 #endif 1450 fdconf(fdc); 1451 } 1452 fdc->sc_overruns = 0; 1453 } 1454 } 1455 fd->sc_blkno += fd->sc_nblks; 1456 fd->sc_skip += fd->sc_nbytes; 1457 fd->sc_bcount -= fd->sc_nbytes; 1458 if (finfo == NULL && fd->sc_bcount > 0) { 1459 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1460 goto doseek; 1461 } 1462 fdfinish(fd, bp); 1463 goto loop; 1464 1465 case DORESET: 1466 doreset: 1467 /* try a reset, keep motor on */ 1468 fd_set_motor(fdc); 1469 delay(100); 1470 fdc_reset(fdc); 1471 fdc->sc_nstat = 0; 1472 fdc->sc_istate = ISTATE_SENSEI; 1473 fdc->sc_state = RESETCOMPLETE; 1474 timeout(fdctimeout, fdc, hz / 2); 1475 return (1); /* will return later */ 1476 1477 case RESETCOMPLETE: 1478 untimeout(fdctimeout, fdc); 1479 fdconf(fdc); 1480 1481 /* fall through */ 1482 case DORECAL: 1483 fdc->sc_state = RECALWAIT; 1484 fdc->sc_istate = ISTATE_SENSEI; 1485 fdc->sc_nstat = 0; 1486 /* recalibrate function */ 1487 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1488 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1489 timeout(fdctimeout, fdc, 5 * hz); 1490 return (1); /* will return later */ 1491 1492 case RECALWAIT: 1493 untimeout(fdctimeout, fdc); 1494 fdc->sc_state = RECALCOMPLETE; 1495 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1496 /* allow 1/30 second for heads to settle */ 1497 timeout(fdcpseudointr, fdc, hz / 30); 1498 return (1); /* will return later */ 1499 } 1500 1501 case RECALCOMPLETE: 1502 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1503 #ifdef FD_DEBUG 1504 if (fdc_debug) 1505 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1506 #endif 1507 fdcretry(fdc); 1508 goto loop; 1509 } 1510 fd->sc_cylin = 0; 1511 goto doseek; 1512 1513 case MOTORWAIT: 1514 if (fd->sc_flags & FD_MOTOR_WAIT) 1515 return (1); /* time's not up yet */ 1516 goto doseek; 1517 1518 default: 1519 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1520 return (1); 1521 } 1522 #ifdef DIAGNOSTIC 1523 panic("fdcintr: impossible"); 1524 #endif 1525 #undef st0 1526 #undef st1 1527 #undef cyl 1528 } 1529 1530 void 1531 fdcretry(fdc) 1532 struct fdc_softc *fdc; 1533 { 1534 char bits[64]; 1535 struct fd_softc *fd; 1536 struct buf *bp; 1537 1538 fd = fdc->sc_drives.tqh_first; 1539 bp = fd->sc_q.b_actf; 1540 1541 fdc->sc_overruns = 0; 1542 if (fd->sc_opts & FDOPT_NORETRY) 1543 goto fail; 1544 1545 switch (fdc->sc_errors) { 1546 case 0: 1547 /* try again */ 1548 fdc->sc_state = 1549 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1550 break; 1551 1552 case 1: case 2: case 3: 1553 /* didn't work; try recalibrating */ 1554 fdc->sc_state = DORECAL; 1555 break; 1556 1557 case 4: 1558 /* still no go; reset the bastard */ 1559 fdc->sc_state = DORESET; 1560 break; 1561 1562 default: 1563 fail: 1564 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1565 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1566 fd->sc_skip / FD_BSIZE(fd), 1567 (struct disklabel *)NULL); 1568 1569 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1570 NE7_ST0BITS, bits, sizeof(bits))); 1571 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1572 NE7_ST1BITS, bits, sizeof(bits))); 1573 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1574 NE7_ST2BITS, bits, sizeof(bits))); 1575 printf(" cyl %d head %d sec %d)\n", 1576 fdc->sc_status[3], fdc->sc_status[4], 1577 fdc->sc_status[5]); 1578 } 1579 1580 bp->b_flags |= B_ERROR; 1581 bp->b_error = EIO; 1582 fdfinish(fd, bp); 1583 } 1584 fdc->sc_errors++; 1585 } 1586 1587 int 1588 fdsize(dev) 1589 dev_t dev; 1590 { 1591 1592 /* Swapping to floppies would not make sense. */ 1593 return (-1); 1594 } 1595 1596 int 1597 fddump(dev, blkno, va, size) 1598 dev_t dev; 1599 daddr_t blkno; 1600 caddr_t va; 1601 size_t size; 1602 { 1603 1604 /* Not implemented. */ 1605 return (EINVAL); 1606 } 1607 1608 int 1609 fdioctl(dev, cmd, addr, flag, p) 1610 dev_t dev; 1611 u_long cmd; 1612 caddr_t addr; 1613 int flag; 1614 struct proc *p; 1615 { 1616 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1617 struct fdformat_parms *form_parms; 1618 struct fdformat_cmd *form_cmd; 1619 struct ne7_fd_formb fd_formb; 1620 int il[FD_MAX_NSEC + 1]; 1621 int i, j; 1622 int error; 1623 1624 switch (cmd) { 1625 case DIOCGDINFO: 1626 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1627 return 0; 1628 1629 case DIOCWLABEL: 1630 if ((flag & FWRITE) == 0) 1631 return EBADF; 1632 /* XXX do something */ 1633 return (0); 1634 1635 case DIOCWDINFO: 1636 if ((flag & FWRITE) == 0) 1637 return (EBADF); 1638 1639 error = setdisklabel(fd->sc_dk.dk_label, 1640 (struct disklabel *)addr, 0, 1641 fd->sc_dk.dk_cpulabel); 1642 if (error) 1643 return (error); 1644 1645 error = writedisklabel(dev, fdstrategy, 1646 fd->sc_dk.dk_label, 1647 fd->sc_dk.dk_cpulabel); 1648 return (error); 1649 1650 case DIOCLOCK: 1651 /* 1652 * Nothing to do here, really. 1653 */ 1654 return (0); 1655 1656 case DIOCEJECT: 1657 fd_do_eject(fd); 1658 return (0); 1659 1660 case FDIOCGETFORMAT: 1661 form_parms = (struct fdformat_parms *)addr; 1662 form_parms->fdformat_version = FDFORMAT_VERSION; 1663 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1664 form_parms->ncyl = fd->sc_type->cylinders; 1665 form_parms->nspt = fd->sc_type->sectrac; 1666 form_parms->ntrk = fd->sc_type->heads; 1667 form_parms->stepspercyl = fd->sc_type->step; 1668 form_parms->gaplen = fd->sc_type->gap2; 1669 form_parms->fillbyte = fd->sc_type->fillbyte; 1670 form_parms->interleave = fd->sc_type->interleave; 1671 switch (fd->sc_type->rate) { 1672 case FDC_500KBPS: 1673 form_parms->xfer_rate = 500 * 1024; 1674 break; 1675 case FDC_300KBPS: 1676 form_parms->xfer_rate = 300 * 1024; 1677 break; 1678 case FDC_250KBPS: 1679 form_parms->xfer_rate = 250 * 1024; 1680 break; 1681 default: 1682 return (EINVAL); 1683 } 1684 return (0); 1685 1686 case FDIOCSETFORMAT: 1687 if ((flag & FWRITE) == 0) 1688 return (EBADF); /* must be opened for writing */ 1689 1690 form_parms = (struct fdformat_parms *)addr; 1691 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1692 return (EINVAL);/* wrong version of formatting prog */ 1693 1694 i = form_parms->nbps >> 7; 1695 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1696 i & ~(1 << (ffs(i)-1))) 1697 /* not a power-of-two multiple of 128 */ 1698 return (EINVAL); 1699 1700 switch (form_parms->xfer_rate) { 1701 case 500 * 1024: 1702 fd->sc_type->rate = FDC_500KBPS; 1703 break; 1704 case 300 * 1024: 1705 fd->sc_type->rate = FDC_300KBPS; 1706 break; 1707 case 250 * 1024: 1708 fd->sc_type->rate = FDC_250KBPS; 1709 break; 1710 default: 1711 return (EINVAL); 1712 } 1713 1714 if (form_parms->nspt > FD_MAX_NSEC || 1715 form_parms->fillbyte > 0xff || 1716 form_parms->interleave > 0xff) 1717 return EINVAL; 1718 fd->sc_type->sectrac = form_parms->nspt; 1719 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1720 return EINVAL; 1721 fd->sc_type->heads = form_parms->ntrk; 1722 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1723 fd->sc_type->secsize = ffs(i)-1; 1724 fd->sc_type->gap2 = form_parms->gaplen; 1725 fd->sc_type->cylinders = form_parms->ncyl; 1726 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1727 form_parms->nbps / DEV_BSIZE; 1728 fd->sc_type->step = form_parms->stepspercyl; 1729 fd->sc_type->fillbyte = form_parms->fillbyte; 1730 fd->sc_type->interleave = form_parms->interleave; 1731 return (0); 1732 1733 case FDIOCFORMAT_TRACK: 1734 if((flag & FWRITE) == 0) 1735 /* must be opened for writing */ 1736 return (EBADF); 1737 form_cmd = (struct fdformat_cmd *)addr; 1738 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1739 /* wrong version of formatting prog */ 1740 return (EINVAL); 1741 1742 if (form_cmd->head >= fd->sc_type->heads || 1743 form_cmd->cylinder >= fd->sc_type->cylinders) { 1744 return (EINVAL); 1745 } 1746 1747 fd_formb.head = form_cmd->head; 1748 fd_formb.cyl = form_cmd->cylinder; 1749 fd_formb.transfer_rate = fd->sc_type->rate; 1750 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1751 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1752 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1753 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1754 1755 bzero(il, sizeof il); 1756 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1757 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1758 j++; 1759 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1760 j += fd->sc_type->interleave; 1761 } 1762 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1763 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1764 fd_formb.fd_formb_headno(i) = form_cmd->head; 1765 fd_formb.fd_formb_secno(i) = il[i+1]; 1766 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1767 } 1768 1769 return fdformat(dev, &fd_formb, p); 1770 1771 case FDIOCGETOPTS: /* get drive options */ 1772 *(int *)addr = fd->sc_opts; 1773 return (0); 1774 1775 case FDIOCSETOPTS: /* set drive options */ 1776 fd->sc_opts = *(int *)addr; 1777 return (0); 1778 1779 #ifdef DEBUG 1780 case _IO('f', 100): 1781 { 1782 int i; 1783 struct fdc_softc *fdc = (struct fdc_softc *) 1784 fd->sc_dv.dv_parent; 1785 1786 out_fdc(fdc, NE7CMD_DUMPREG); 1787 fdcresult(fdc); 1788 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1789 for (i = 0; i < fdc->sc_nstat; i++) 1790 printf(" 0x%x", fdc->sc_status[i]); 1791 printf(">\n"); 1792 } 1793 1794 return (0); 1795 case _IOW('f', 101, int): 1796 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1797 ~CFG_THRHLD_MASK; 1798 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1799 (*(int *)addr & CFG_THRHLD_MASK); 1800 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1801 return (0); 1802 case _IO('f', 102): 1803 { 1804 int i; 1805 struct fdc_softc *fdc = (struct fdc_softc *) 1806 fd->sc_dv.dv_parent; 1807 out_fdc(fdc, NE7CMD_SENSEI); 1808 fdcresult(fdc); 1809 printf("sensei(%d regs): <", fdc->sc_nstat); 1810 for (i=0; i< fdc->sc_nstat; i++) 1811 printf(" 0x%x", fdc->sc_status[i]); 1812 } 1813 printf(">\n"); 1814 return (0); 1815 #endif 1816 default: 1817 return (ENOTTY); 1818 } 1819 1820 #ifdef DIAGNOSTIC 1821 panic("fdioctl: impossible"); 1822 #endif 1823 } 1824 1825 int 1826 fdformat(dev, finfo, p) 1827 dev_t dev; 1828 struct ne7_fd_formb *finfo; 1829 struct proc *p; 1830 { 1831 int rv = 0, s; 1832 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1833 struct fd_type *type = fd->sc_type; 1834 struct buf *bp; 1835 1836 /* set up a buffer header for fdstrategy() */ 1837 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1838 if (bp == 0) 1839 return (ENOBUFS); 1840 1841 PHOLD(p); 1842 bzero((void *)bp, sizeof(struct buf)); 1843 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1844 bp->b_proc = p; 1845 bp->b_dev = dev; 1846 1847 /* 1848 * Calculate a fake blkno, so fdstrategy() would initiate a 1849 * seek to the requested cylinder. 1850 */ 1851 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1852 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1853 / DEV_BSIZE; 1854 1855 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1856 bp->b_data = (caddr_t)finfo; 1857 1858 #ifdef FD_DEBUG 1859 if (fdc_debug) 1860 printf("fdformat: blkno 0x%x count %ld\n", 1861 bp->b_blkno, bp->b_bcount); 1862 #endif 1863 1864 /* now do the format */ 1865 fdstrategy(bp); 1866 1867 /* ...and wait for it to complete */ 1868 s = splbio(); 1869 while (!(bp->b_flags & B_DONE)) { 1870 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1871 if (rv == EWOULDBLOCK) 1872 break; 1873 } 1874 splx(s); 1875 1876 if (rv == EWOULDBLOCK) { 1877 /* timed out */ 1878 rv = EIO; 1879 biodone(bp); 1880 } 1881 if (bp->b_flags & B_ERROR) { 1882 rv = bp->b_error; 1883 } 1884 PRELE(p); 1885 free(bp, M_TEMP); 1886 return (rv); 1887 } 1888 1889 void 1890 fdgetdisklabel(dev) 1891 dev_t dev; 1892 { 1893 int unit = FDUNIT(dev), i; 1894 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1895 struct disklabel *lp = fd->sc_dk.dk_label; 1896 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1897 1898 bzero(lp, sizeof(struct disklabel)); 1899 bzero(lp, sizeof(struct cpu_disklabel)); 1900 1901 lp->d_type = DTYPE_FLOPPY; 1902 lp->d_secsize = FD_BSIZE(fd); 1903 lp->d_secpercyl = fd->sc_type->seccyl; 1904 lp->d_nsectors = fd->sc_type->sectrac; 1905 lp->d_ncylinders = fd->sc_type->cylinders; 1906 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1907 lp->d_rpm = 3600; /* XXX like it matters... */ 1908 1909 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1910 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1911 lp->d_interleave = 1; 1912 1913 lp->d_partitions[RAW_PART].p_offset = 0; 1914 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1915 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1916 lp->d_npartitions = RAW_PART + 1; 1917 1918 lp->d_magic = DISKMAGIC; 1919 lp->d_magic2 = DISKMAGIC; 1920 lp->d_checksum = dkcksum(lp); 1921 1922 /* 1923 * Call the generic disklabel extraction routine. If there's 1924 * not a label there, fake it. 1925 */ 1926 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1927 strncpy(lp->d_packname, "default label", 1928 sizeof(lp->d_packname)); 1929 /* 1930 * Reset the partition info; it might have gotten 1931 * trashed in readdisklabel(). 1932 * 1933 * XXX Why do we have to do this? readdisklabel() 1934 * should be safe... 1935 */ 1936 for (i = 0; i < MAXPARTITIONS; ++i) { 1937 lp->d_partitions[i].p_offset = 0; 1938 if (i == RAW_PART) { 1939 lp->d_partitions[i].p_size = 1940 lp->d_secpercyl * lp->d_ncylinders; 1941 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1942 } else { 1943 lp->d_partitions[i].p_size = 0; 1944 lp->d_partitions[i].p_fstype = FS_UNUSED; 1945 } 1946 } 1947 lp->d_npartitions = RAW_PART + 1; 1948 } 1949 } 1950 1951 void 1952 fd_do_eject(fd) 1953 struct fd_softc *fd; 1954 { 1955 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1956 1957 if (CPU_ISSUN4C) { 1958 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 1959 delay(10); 1960 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 1961 return; 1962 } 1963 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 1964 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 1965 *fdc->sc_reg_dor = dor | FDO_EJ; 1966 delay(10); 1967 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 1968 return; 1969 } 1970 } 1971 1972 #ifdef MEMORY_DISK_HOOKS 1973 int fd_read_md_image __P((size_t *, caddr_t *)); 1974 #endif 1975 1976 /* ARGSUSED */ 1977 void 1978 fd_mountroot_hook(dev) 1979 struct device *dev; 1980 { 1981 int c; 1982 1983 fd_do_eject((struct fd_softc *)dev); 1984 printf("Insert filesystem floppy and press return."); 1985 for (;;) { 1986 c = cngetc(); 1987 if ((c == '\r') || (c == '\n')) { 1988 printf("\n"); 1989 break; 1990 } 1991 } 1992 #ifdef MEMORY_DISK_HOOKS 1993 { 1994 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1995 md_read_image = fd_read_md_image; 1996 } 1997 #endif 1998 } 1999 2000 #ifdef MEMORY_DISK_HOOKS 2001 2002 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2003 2004 int 2005 fd_read_md_image(sizep, addrp) 2006 size_t *sizep; 2007 caddr_t *addrp; 2008 { 2009 struct buf buf, *bp = &buf; 2010 dev_t dev; 2011 off_t offset; 2012 caddr_t addr; 2013 2014 dev = makedev(54,0); /* XXX */ 2015 2016 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2017 *addrp = addr; 2018 2019 if (fdopen(dev, 0, S_IFCHR, NULL)) 2020 panic("fd: mountroot: fdopen"); 2021 2022 offset = 0; 2023 2024 for (;;) { 2025 bp->b_dev = dev; 2026 bp->b_error = 0; 2027 bp->b_resid = 0; 2028 bp->b_proc = NULL; 2029 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2030 bp->b_blkno = btodb(offset); 2031 bp->b_bcount = DEV_BSIZE; 2032 bp->b_data = addr; 2033 fdstrategy(bp); 2034 while ((bp->b_flags & B_DONE) == 0) { 2035 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2036 } 2037 if (bp->b_error) 2038 panic("fd: mountroot: fdread error %d", bp->b_error); 2039 2040 if (bp->b_resid != 0) 2041 break; 2042 2043 addr += DEV_BSIZE; 2044 offset += DEV_BSIZE; 2045 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2046 break; 2047 } 2048 (void)fdclose(dev, 0, S_IFCHR, NULL); 2049 *sizep = offset; 2050 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2051 return (0); 2052 } 2053 #endif 2054
Indexes created Fri Oct 03 02:09:57 GMT 2025