fd.c revision 1.43
1 /* $NetBSD: fd.c,v 1.43 1996/12/10 14:44:53 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 *, void *, 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 tracks; /* total num of tracks */ 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 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 176 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 177 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 178 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 179 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 180 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 181 }; 182 183 /* software state, per disk (with up to 4 disks per ctlr) */ 184 struct fd_softc { 185 struct device sc_dv; /* generic device info */ 186 struct disk sc_dk; /* generic disk info */ 187 188 struct fd_type *sc_deftype; /* default type descriptor */ 189 struct fd_type *sc_type; /* current type descriptor */ 190 191 daddr_t sc_blkno; /* starting block number */ 192 int sc_bcount; /* byte count left */ 193 int sc_skip; /* bytes already transferred */ 194 int sc_nblks; /* number of blocks currently tranferring */ 195 int sc_nbytes; /* number of bytes currently tranferring */ 196 197 int sc_drive; /* physical unit number */ 198 int sc_flags; 199 #define FD_OPEN 0x01 /* it's open */ 200 #define FD_MOTOR 0x02 /* motor should be on */ 201 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 202 int sc_cylin; /* where we think the head is */ 203 int sc_opts; /* user-set options */ 204 205 void *sc_sdhook; /* shutdownhook cookie */ 206 207 TAILQ_ENTRY(fd_softc) sc_drivechain; 208 int sc_ops; /* I/O ops since last switch */ 209 struct buf sc_q; /* head of buf chain */ 210 }; 211 212 /* floppy driver configuration */ 213 int fdmatch __P((struct device *, void *, void *)); 214 void fdattach __P((struct device *, struct device *, void *)); 215 216 struct cfattach fd_ca = { 217 sizeof(struct fd_softc), fdmatch, fdattach 218 }; 219 220 struct cfdriver fd_cd = { 221 NULL, "fd", DV_DISK 222 }; 223 224 void fdgetdisklabel __P((dev_t)); 225 int fd_get_parms __P((struct fd_softc *)); 226 void fdstrategy __P((struct buf *)); 227 void fdstart __P((struct fd_softc *)); 228 int fdprint __P((void *, const char *)); 229 230 struct dkdriver fddkdriver = { fdstrategy }; 231 232 struct fd_type *fd_nvtotype __P((char *, int, int)); 233 void fd_set_motor __P((struct fdc_softc *fdc)); 234 void fd_motor_off __P((void *arg)); 235 void fd_motor_on __P((void *arg)); 236 int fdcresult __P((struct fdc_softc *fdc)); 237 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 238 void fdcstart __P((struct fdc_softc *fdc)); 239 void fdcstatus __P((struct device *dv, int n, char *s)); 240 void fdc_reset __P((struct fdc_softc *fdc)); 241 void fdctimeout __P((void *arg)); 242 void fdcpseudointr __P((void *arg)); 243 #ifdef FDC_C_HANDLER 244 int fdchwintr __P((struct fdc_softc *)); 245 #else 246 void fdchwintr __P((void)); 247 #endif 248 int fdcswintr __P((struct fdc_softc *)); 249 int fdcstate __P((struct fdc_softc *)); 250 void fdcretry __P((struct fdc_softc *fdc)); 251 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 252 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 253 void fd_do_eject __P((void)); 254 void fd_mountroot_hook __P((struct device *)); 255 static void fdconf __P((struct fdc_softc *)); 256 257 #if PIL_FDSOFT == 4 258 #define IE_FDSOFT IE_L4 259 #else 260 #error 4 261 #endif 262 263 #ifdef FDC_C_HANDLER 264 #if defined(SUN4M) 265 #define FD_SET_SWINTR do { \ 266 if (CPU_ISSUN4M) \ 267 raise(0, PIL_FDSOFT); \ 268 else \ 269 ienab_bis(IE_L4); \ 270 } while(0) 271 #else 272 #define AUDIO_SET_SWINTR ienab_bis(IE_FDSOFT) 273 #endif /* defined(SUN4M) */ 274 #endif /* FDC_C_HANDLER */ 275 276 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 277 278 int 279 fdcmatch(parent, match, aux) 280 struct device *parent; 281 void *match, *aux; 282 { 283 register struct confargs *ca = aux; 284 register struct romaux *ra = &ca->ca_ra; 285 286 /* 287 * Floppy doesn't exist on sun4. 288 */ 289 if (CPU_ISSUN4) 290 return (0); 291 292 /* 293 * Floppy controller is on mainbus on sun4c. 294 */ 295 if ((CPU_ISSUN4C) && (ca->ca_bustype != BUS_MAIN)) 296 return (0); 297 298 /* 299 * Floppy controller is on obio on sun4m. 300 */ 301 if ((CPU_ISSUN4M) && (ca->ca_bustype != BUS_OBIO)) 302 return (0); 303 304 /* Sun PROMs call the controller an "fd" or "SUNW,fdtwo" */ 305 if (strcmp(OBP_FDNAME, ra->ra_name)) 306 return (0); 307 308 if (ca->ca_ra.ra_vaddr && 309 probeget(ca->ca_ra.ra_vaddr, 1) == -1) { 310 return (0); 311 } 312 313 return (1); 314 } 315 316 /* 317 * Arguments passed between fdcattach and fdprobe. 318 */ 319 struct fdc_attach_args { 320 int fa_drive; 321 struct bootpath *fa_bootpath; 322 struct fd_type *fa_deftype; 323 }; 324 325 /* 326 * Print the location of a disk drive (called just before attaching the 327 * the drive). If `fdc' is not NULL, the drive was found but was not 328 * in the system config file; print the drive name as well. 329 * Return QUIET (config_find ignores this if the device was configured) to 330 * avoid printing `fdN not configured' messages. 331 */ 332 int 333 fdprint(aux, fdc) 334 void *aux; 335 const char *fdc; 336 { 337 register struct fdc_attach_args *fa = aux; 338 339 if (!fdc) 340 printf(" drive %d", fa->fa_drive); 341 return (QUIET); 342 } 343 344 static void 345 fdconf(fdc) 346 struct fdc_softc *fdc; 347 { 348 int vroom; 349 350 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 351 return; 352 353 /* 354 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 355 * the PROM thinks is appropriate. 356 */ 357 if ((vroom = fdc->sc_status[7]) == 0) 358 vroom = 0x64; 359 360 /* Configure controller to use FIFO and Implied Seek */ 361 out_fdc(fdc, NE7CMD_CFG); 362 out_fdc(fdc, vroom); 363 out_fdc(fdc, fdc->sc_cfg); 364 out_fdc(fdc, 0); /* PRETRK */ 365 /* No result phase */ 366 } 367 368 void 369 fdcattach(parent, self, aux) 370 struct device *parent, *self; 371 void *aux; 372 { 373 register struct confargs *ca = aux; 374 struct fdc_softc *fdc = (void *)self; 375 struct fdc_attach_args fa; 376 struct bootpath *bp; 377 int pri; 378 char code; 379 380 if (ca->ca_ra.ra_vaddr) 381 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 382 else 383 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_reg, 0, 384 ca->ca_ra.ra_len, 385 ca->ca_bustype); 386 387 fdc->sc_state = DEVIDLE; 388 fdc->sc_istate = ISTATE_IDLE; 389 fdc->sc_flags |= FDC_EIS; 390 TAILQ_INIT(&fdc->sc_drives); 391 392 pri = ca->ca_ra.ra_intr[0].int_pri; 393 #ifdef FDC_C_HANDLER 394 fdc->sc_hih.ih_fun = (void *)fdchwintr; 395 fdc->sc_hih.ih_arg = fdc; 396 intr_establish(pri, &fdc->sc_hih); 397 #else 398 fdciop = &fdc->sc_io; 399 intr_fasttrap(pri, fdchwintr); 400 #endif 401 fdc->sc_sih.ih_fun = (void *)fdcswintr; 402 fdc->sc_sih.ih_arg = fdc; 403 intr_establish(PIL_FDSOFT, &fdc->sc_sih); 404 405 /* Assume a 82077 */ 406 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 407 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 408 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 409 410 code = '7'; 411 if (*fdc->sc_reg_dor == NE7_RQM) { 412 /* 413 * This hack from Chris Torek: apparently DOR really 414 * addresses MSR/DRS on a 82072. 415 * We used to rely on the VERSION command to tell the 416 * difference (which did not work). 417 */ 418 *fdc->sc_reg_dor = FDC_250KBPS; 419 if (*fdc->sc_reg_dor == NE7_RQM) 420 code = '2'; 421 } 422 if (code == '7') { 423 fdc->sc_flags |= FDC_82077; 424 } else { 425 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 426 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 427 fdc->sc_reg_dor = 0; 428 } 429 430 #ifdef FD_DEBUG 431 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 432 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 433 if (fdc_debug) 434 printf("[version cmd]"); 435 } 436 #endif 437 438 /* 439 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 440 * Note: CFG_EFIFO is active-low, initial threshold value: 8 441 */ 442 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 443 fdconf(fdc); 444 445 if (fdc->sc_flags & FDC_82077) { 446 /* Lock configuration across soft resets. */ 447 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 448 if (fdcresult(fdc) != 1) 449 printf(" CFGLOCK: unexpected response"); 450 } 451 452 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 453 454 printf(" pri %d, softpri %d: chip 8207%c\n", pri, PIL_FDSOFT, code); 455 456 /* 457 * Controller and drives are represented by one and the same 458 * Openprom node, so we can as well check for the floppy boots here. 459 */ 460 fa.fa_bootpath = 0; 461 if ((bp = ca->ca_ra.ra_bp) && strcmp(bp->name, OBP_FDNAME) == 0) { 462 463 switch (ca->ca_bustype) { 464 case BUS_MAIN: 465 /* 466 * We can get the bootpath in several different 467 * formats! The faked v1 bootpath looks like /fd@0,0. 468 * The v2 bootpath is either just /fd0, in which case 469 * `bp->val[0]' will have been set to -1, or /fd@x,y 470 * where <x,y> is the prom address specifier. 471 */ 472 if (((bp->val[0] == ca->ca_ra.ra_iospace) && 473 (bp->val[1] == (int)ca->ca_ra.ra_paddr)) || 474 475 ((bp->val[0] == -1) && /* v2: /fd0 */ 476 (bp->val[1] == 0)) || 477 478 ((bp->val[0] == 0) && /* v1: /fd@0,0 */ 479 (bp->val[1] == 0)) 480 ) 481 fa.fa_bootpath = bp; 482 break; 483 484 case BUS_OBIO: 485 /* 486 * floppy controller on obio (such as on the sun4m), 487 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 488 * We use "slot, offset" to determine if this is the 489 * right one. 490 */ 491 if ((bp->val[0] == ca->ca_slot) && 492 (bp->val[1] == ca->ca_offset)) 493 fa.fa_bootpath = bp; 494 break; 495 } 496 497 } 498 499 /* physical limit: four drives per controller. */ 500 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 501 fa.fa_deftype = NULL; /* unknown */ 502 fa.fa_deftype = &fd_types[0]; /* XXX */ 503 (void)config_found(self, (void *)&fa, fdprint); 504 } 505 506 bootpath_store(1, NULL); 507 } 508 509 int 510 fdmatch(parent, match, aux) 511 struct device *parent; 512 void *match, *aux; 513 { 514 struct fdc_softc *fdc = (void *)parent; 515 struct fdc_attach_args *fa = aux; 516 int drive = fa->fa_drive; 517 int n, ok; 518 519 if (drive > 0) 520 /* XXX - for now, punt > 1 drives */ 521 return (0); 522 523 if (fdc->sc_flags & FDC_82077) { 524 /* select drive and turn on motor */ 525 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 526 /* wait for motor to spin up */ 527 delay(250000); 528 } else { 529 auxregbisc(AUXIO_FDS, 0); 530 } 531 fdc->sc_nstat = 0; 532 out_fdc(fdc, NE7CMD_RECAL); 533 out_fdc(fdc, drive); 534 /* wait for recalibrate */ 535 for (n = 0; n < 10000; n++) { 536 delay(1000); 537 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 538 /* wait a bit longer till device *really* is ready */ 539 delay(100000); 540 if (out_fdc(fdc, NE7CMD_SENSEI)) 541 break; 542 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 543 /* 544 * Got `invalid command'; we interpret it 545 * to mean that the re-calibrate hasn't in 546 * fact finished yet 547 */ 548 continue; 549 break; 550 } 551 } 552 n = fdc->sc_nstat; 553 #ifdef FD_DEBUG 554 if (fdc_debug) { 555 int i; 556 printf("fdprobe: %d stati:", n); 557 for (i = 0; i < n; i++) 558 printf(" %x", fdc->sc_status[i]); 559 printf("\n"); 560 } 561 #endif 562 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 563 564 /* turn off motor */ 565 if (fdc->sc_flags & FDC_82077) { 566 /* select drive and turn on motor */ 567 *fdc->sc_reg_dor = FDO_FRST; 568 } else { 569 auxregbisc(0, AUXIO_FDS); 570 } 571 572 return (ok); 573 } 574 575 /* 576 * Controller is working, and drive responded. Attach it. 577 */ 578 void 579 fdattach(parent, self, aux) 580 struct device *parent, *self; 581 void *aux; 582 { 583 struct fdc_softc *fdc = (void *)parent; 584 struct fd_softc *fd = (void *)self; 585 struct fdc_attach_args *fa = aux; 586 struct fd_type *type = fa->fa_deftype; 587 int drive = fa->fa_drive; 588 589 /* XXX Allow `flags' to override device type? */ 590 591 if (type) 592 printf(": %s %d cyl, %d head, %d sec\n", type->name, 593 type->tracks, type->heads, type->sectrac); 594 else 595 printf(": density unknown\n"); 596 597 fd->sc_cylin = -1; 598 fd->sc_drive = drive; 599 fd->sc_deftype = type; 600 fdc->sc_fd[drive] = fd; 601 602 /* 603 * Initialize and attach the disk structure. 604 */ 605 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 606 fd->sc_dk.dk_driver = &fddkdriver; 607 disk_attach(&fd->sc_dk); 608 609 /* 610 * We're told if we're the boot device in fdcattach(). 611 */ 612 if (fa->fa_bootpath) 613 fa->fa_bootpath->dev = &fd->sc_dv; 614 615 /* 616 * Establish a mountroot_hook anyway in case we booted 617 * with RB_ASKNAME and get selected as the boot device. 618 */ 619 mountroot_hook_establish(fd_mountroot_hook, &fd->sc_dv); 620 621 /* Make sure the drive motor gets turned off at shutdown time. */ 622 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 623 624 /* XXX Need to do some more fiddling with sc_dk. */ 625 dk_establish(&fd->sc_dk, &fd->sc_dv); 626 } 627 628 __inline struct fd_type * 629 fd_dev_to_type(fd, dev) 630 struct fd_softc *fd; 631 dev_t dev; 632 { 633 int type = FDTYPE(dev); 634 635 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 636 return (NULL); 637 return (type ? &fd_types[type - 1] : fd->sc_deftype); 638 } 639 640 void 641 fdstrategy(bp) 642 register struct buf *bp; /* IO operation to perform */ 643 { 644 struct fd_softc *fd; 645 int unit = FDUNIT(bp->b_dev); 646 int sz; 647 int s; 648 649 /* Valid unit, controller, and request? */ 650 if (unit >= fd_cd.cd_ndevs || 651 (fd = fd_cd.cd_devs[unit]) == 0 || 652 bp->b_blkno < 0 || 653 ((bp->b_bcount % FDC_BSIZE) != 0 && 654 (bp->b_flags & B_FORMAT) == 0)) { 655 bp->b_error = EINVAL; 656 goto bad; 657 } 658 659 /* If it's a null transfer, return immediately. */ 660 if (bp->b_bcount == 0) 661 goto done; 662 663 sz = howmany(bp->b_bcount, FDC_BSIZE); 664 665 if (bp->b_blkno + sz > fd->sc_type->size) { 666 sz = fd->sc_type->size - bp->b_blkno; 667 if (sz == 0) { 668 /* If exactly at end of disk, return EOF. */ 669 bp->b_resid = bp->b_bcount; 670 goto done; 671 } 672 if (sz < 0) { 673 /* If past end of disk, return EINVAL. */ 674 bp->b_error = EINVAL; 675 goto bad; 676 } 677 /* Otherwise, truncate request. */ 678 bp->b_bcount = sz << DEV_BSHIFT; 679 } 680 681 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 682 683 #ifdef FD_DEBUG 684 if (fdc_debug > 1) 685 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 686 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 687 #endif 688 689 /* Queue transfer on drive, activate drive and controller if idle. */ 690 s = splbio(); 691 disksort(&fd->sc_q, bp); 692 untimeout(fd_motor_off, fd); /* a good idea */ 693 if (!fd->sc_q.b_active) 694 fdstart(fd); 695 #ifdef DIAGNOSTIC 696 else { 697 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 698 if (fdc->sc_state == DEVIDLE) { 699 printf("fdstrategy: controller inactive\n"); 700 fdcstart(fdc); 701 } 702 } 703 #endif 704 splx(s); 705 return; 706 707 bad: 708 bp->b_flags |= B_ERROR; 709 done: 710 /* Toss transfer; we're done early. */ 711 biodone(bp); 712 } 713 714 void 715 fdstart(fd) 716 struct fd_softc *fd; 717 { 718 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 719 int active = fdc->sc_drives.tqh_first != 0; 720 721 /* Link into controller queue. */ 722 fd->sc_q.b_active = 1; 723 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 724 725 /* If controller not already active, start it. */ 726 if (!active) 727 fdcstart(fdc); 728 } 729 730 void 731 fdfinish(fd, bp) 732 struct fd_softc *fd; 733 struct buf *bp; 734 { 735 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 736 737 /* 738 * Move this drive to the end of the queue to give others a `fair' 739 * chance. We only force a switch if N operations are completed while 740 * another drive is waiting to be serviced, since there is a long motor 741 * startup delay whenever we switch. 742 */ 743 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 744 fd->sc_ops = 0; 745 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 746 if (bp->b_actf) { 747 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 748 } else 749 fd->sc_q.b_active = 0; 750 } 751 bp->b_resid = fd->sc_bcount; 752 fd->sc_skip = 0; 753 fd->sc_q.b_actf = bp->b_actf; 754 755 biodone(bp); 756 /* turn off motor 5s from now */ 757 timeout(fd_motor_off, fd, 5 * hz); 758 fdc->sc_state = DEVIDLE; 759 } 760 761 void 762 fdc_reset(fdc) 763 struct fdc_softc *fdc; 764 { 765 if (fdc->sc_flags & FDC_82077) { 766 *fdc->sc_reg_dor = FDO_MOEN(0); 767 } 768 769 *fdc->sc_reg_drs = DRS_RESET; 770 delay(10); 771 *fdc->sc_reg_drs = 0; 772 #ifdef FD_DEBUG 773 if (fdc_debug) 774 printf("fdc reset\n"); 775 #endif 776 } 777 778 void 779 fd_set_motor(fdc) 780 struct fdc_softc *fdc; 781 { 782 struct fd_softc *fd; 783 u_char status; 784 int n; 785 786 if (fdc->sc_flags & FDC_82077) { 787 status = FDO_FRST | FDO_FDMAEN; 788 if ((fd = fdc->sc_drives.tqh_first) != NULL) 789 status |= fd->sc_drive; 790 791 for (n = 0; n < 4; n++) 792 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 793 status |= FDO_MOEN(n); 794 *fdc->sc_reg_dor = status; 795 } else { 796 int on = 0; 797 798 for (n = 0; n < 4; n++) 799 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 800 on = 1; 801 if (on) { 802 auxregbisc(AUXIO_FDS, 0); 803 } else { 804 auxregbisc(0, AUXIO_FDS); 805 } 806 } 807 } 808 809 void 810 fd_motor_off(arg) 811 void *arg; 812 { 813 struct fd_softc *fd = arg; 814 int s; 815 816 s = splbio(); 817 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 818 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 819 splx(s); 820 } 821 822 void 823 fd_motor_on(arg) 824 void *arg; 825 { 826 struct fd_softc *fd = arg; 827 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 828 int s; 829 830 s = splbio(); 831 fd->sc_flags &= ~FD_MOTOR_WAIT; 832 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 833 (void) fdcstate(fdc); 834 splx(s); 835 } 836 837 int 838 fdcresult(fdc) 839 struct fdc_softc *fdc; 840 { 841 u_char i; 842 int j = 100000, 843 n = 0; 844 845 for (; j; j--) { 846 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 847 if (i == NE7_RQM) 848 return (fdc->sc_nstat = n); 849 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 850 if (n >= sizeof(fdc->sc_status)) { 851 log(LOG_ERR, "fdcresult: overrun\n"); 852 return (-1); 853 } 854 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 855 } else 856 delay(10); 857 } 858 log(LOG_ERR, "fdcresult: timeout\n"); 859 return (fdc->sc_nstat = -1); 860 } 861 862 int 863 out_fdc(fdc, x) 864 struct fdc_softc *fdc; 865 u_char x; 866 { 867 int i = 100000; 868 869 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 870 delay(1); 871 if (i <= 0) 872 return (-1); 873 874 *fdc->sc_reg_fifo = x; 875 return (0); 876 } 877 878 int 879 fdopen(dev, flags, fmt, p) 880 dev_t dev; 881 int flags, fmt; 882 struct proc *p; 883 { 884 int unit, pmask; 885 struct fd_softc *fd; 886 struct fd_type *type; 887 888 unit = FDUNIT(dev); 889 if (unit >= fd_cd.cd_ndevs) 890 return (ENXIO); 891 fd = fd_cd.cd_devs[unit]; 892 if (fd == 0) 893 return (ENXIO); 894 type = fd_dev_to_type(fd, dev); 895 if (type == NULL) 896 return (ENXIO); 897 898 if ((fd->sc_flags & FD_OPEN) != 0 && 899 fd->sc_type != type) 900 return (EBUSY); 901 902 fd->sc_type = type; 903 fd->sc_cylin = -1; 904 fd->sc_flags |= FD_OPEN; 905 906 /* 907 * Only update the disklabel if we're not open anywhere else. 908 */ 909 if (fd->sc_dk.dk_openmask == 0) 910 fdgetdisklabel(dev); 911 912 pmask = (1 << DISKPART(dev)); 913 914 switch (fmt) { 915 case S_IFCHR: 916 fd->sc_dk.dk_copenmask |= pmask; 917 break; 918 919 case S_IFBLK: 920 fd->sc_dk.dk_bopenmask |= pmask; 921 break; 922 } 923 fd->sc_dk.dk_openmask = 924 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 925 926 return (0); 927 } 928 929 int 930 fdclose(dev, flags, fmt, p) 931 dev_t dev; 932 int flags, fmt; 933 struct proc *p; 934 { 935 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 936 int pmask = (1 << DISKPART(dev)); 937 938 fd->sc_flags &= ~FD_OPEN; 939 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 940 941 switch (fmt) { 942 case S_IFCHR: 943 fd->sc_dk.dk_copenmask &= ~pmask; 944 break; 945 946 case S_IFBLK: 947 fd->sc_dk.dk_bopenmask &= ~pmask; 948 break; 949 } 950 fd->sc_dk.dk_openmask = 951 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 952 953 return (0); 954 } 955 956 int 957 fdread(dev, uio, flag) 958 dev_t dev; 959 struct uio *uio; 960 int flag; 961 { 962 963 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 964 } 965 966 int 967 fdwrite(dev, uio, flag) 968 dev_t dev; 969 struct uio *uio; 970 int flag; 971 { 972 973 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 974 } 975 976 void 977 fdcstart(fdc) 978 struct fdc_softc *fdc; 979 { 980 981 #ifdef DIAGNOSTIC 982 /* only got here if controller's drive queue was inactive; should 983 be in idle state */ 984 if (fdc->sc_state != DEVIDLE) { 985 printf("fdcstart: not idle\n"); 986 return; 987 } 988 #endif 989 (void) fdcstate(fdc); 990 } 991 992 void 993 fdcstatus(dv, n, s) 994 struct device *dv; 995 int n; 996 char *s; 997 { 998 struct fdc_softc *fdc = (void *)dv->dv_parent; 999 char bits[64]; 1000 #if 0 1001 /* 1002 * A 82072 seems to return <invalid command> on 1003 * gratuitous Sense Interrupt commands. 1004 */ 1005 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1006 out_fdc(fdc, NE7CMD_SENSEI); 1007 (void) fdcresult(fdc); 1008 n = 2; 1009 } 1010 #endif 1011 1012 /* Just print last status */ 1013 n = fdc->sc_nstat; 1014 1015 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1016 1017 switch (n) { 1018 case 0: 1019 printf("\n"); 1020 break; 1021 case 2: 1022 printf(" (st0 %s cyl %d)\n", 1023 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1024 bits, sizeof(bits)), fdc->sc_status[1]); 1025 break; 1026 case 7: 1027 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1028 NE7_ST0BITS, bits, sizeof(bits))); 1029 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1030 NE7_ST1BITS, bits, sizeof(bits))); 1031 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1032 NE7_ST2BITS, bits, sizeof(bits))); 1033 printf(" cyl %d head %d sec %d)\n", 1034 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1035 break; 1036 #ifdef DIAGNOSTIC 1037 default: 1038 printf(" fdcstatus: weird size: %d\n", n); 1039 break; 1040 #endif 1041 } 1042 } 1043 1044 void 1045 fdctimeout(arg) 1046 void *arg; 1047 { 1048 struct fdc_softc *fdc = arg; 1049 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1050 int s; 1051 1052 s = splbio(); 1053 fdcstatus(&fd->sc_dv, 0, "timeout"); 1054 1055 if (fd->sc_q.b_actf) 1056 fdc->sc_state++; 1057 else 1058 fdc->sc_state = DEVIDLE; 1059 1060 (void) fdcstate(fdc); 1061 splx(s); 1062 } 1063 1064 void 1065 fdcpseudointr(arg) 1066 void *arg; 1067 { 1068 struct fdc_softc *fdc = arg; 1069 int s; 1070 1071 /* Just ensure it has the right spl. */ 1072 s = splbio(); 1073 (void) fdcstate(fdc); 1074 splx(s); 1075 } 1076 1077 1078 #ifdef FDC_C_HANDLER 1079 /* 1080 * hardware interrupt entry point: must be converted to `fast' 1081 * (in-window) handler. 1082 */ 1083 int 1084 fdchwintr(fdc) 1085 struct fdc_softc *fdc; 1086 { 1087 struct buf *bp; 1088 int read; 1089 1090 switch (fdc->sc_istate) { 1091 case ISTATE_IDLE: 1092 return (0); 1093 case ISTATE_SENSEI: 1094 out_fdc(fdc, NE7CMD_SENSEI); 1095 fdcresult(fdc); 1096 fdc->sc_istate = ISTATE_IDLE; 1097 FD_SET_SWINTR; 1098 return (1); 1099 case ISTATE_SPURIOUS: 1100 auxregbisc(0, AUXIO_FDS); /* Does this help? */ 1101 fdcresult(fdc); 1102 fdc->sc_istate = ISTATE_SPURIOUS; 1103 printf("fdc: stray hard interrupt... "); 1104 FD_SET_SWINTR; 1105 return (1); 1106 case ISTATE_DMA: 1107 break; 1108 default: 1109 printf("fdc: goofed ...\n"); 1110 return (1); 1111 } 1112 1113 read = bp->b_flags & B_READ; 1114 for (;;) { 1115 register int msr; 1116 1117 msr = *fdc->sc_reg_msr; 1118 1119 if ((msr & NE7_RQM) == 0) 1120 break; 1121 1122 if ((msr & NE7_NDM) == 0) { 1123 fdcresult(fdc); 1124 fdc->sc_istate = ISTATE_IDLE; 1125 ienab_bis(IE_FDSOFT); 1126 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1127 break; 1128 } 1129 1130 if (msr & NE7_DIO) { 1131 #ifdef DIAGNOSTIC 1132 if (!read) 1133 printf("fdxfer: false read\n"); 1134 #endif 1135 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1136 } else { 1137 #ifdef DIAGNOSTIC 1138 if (read) 1139 printf("fdxfer: false write\n"); 1140 #endif 1141 *fdc->sc_reg_fifo = *fdc->sc_data++; 1142 } 1143 if (--fdc->sc_tc == 0) { 1144 auxregbisc(AUXIO_FTC, 0); 1145 fdc->sc_istate = ISTATE_IDLE; 1146 delay(10); 1147 auxregbisc(0, AUXIO_FTC); 1148 fdcresult(fdc); 1149 FD_SET_SWINTR; 1150 break; 1151 } 1152 } 1153 return (1); 1154 } 1155 #endif 1156 1157 int 1158 fdcswintr(fdc) 1159 struct fdc_softc *fdc; 1160 { 1161 int s; 1162 1163 if (fdc->sc_istate != ISTATE_DONE) 1164 return (0); 1165 1166 fdc->sc_istate = ISTATE_IDLE; 1167 s = splbio(); 1168 fdcstate(fdc); 1169 splx(s); 1170 return (1); 1171 } 1172 1173 int 1174 fdcstate(fdc) 1175 struct fdc_softc *fdc; 1176 { 1177 #define st0 fdc->sc_status[0] 1178 #define st1 fdc->sc_status[1] 1179 #define cyl fdc->sc_status[1] 1180 #define OUT_FDC(fdc, c, s) \ 1181 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1182 1183 struct fd_softc *fd; 1184 struct buf *bp; 1185 int read, head, sec, nblks; 1186 struct fd_type *type; 1187 struct ne7_fd_formb *finfo = NULL; 1188 1189 1190 if (fdc->sc_istate != ISTATE_IDLE) { 1191 /* Trouble... */ 1192 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1193 fdc->sc_state, fdc->sc_istate); 1194 fdc->sc_istate = ISTATE_IDLE; 1195 if (fdc->sc_state == RESETCOMPLETE || 1196 fdc->sc_state == RESETTIMEDOUT) { 1197 panic("fdcintr: spurious interrupt can't be cleared"); 1198 } 1199 goto doreset; 1200 } 1201 1202 loop: 1203 /* Is there a drive for the controller to do a transfer with? */ 1204 fd = fdc->sc_drives.tqh_first; 1205 if (fd == NULL) { 1206 fdc->sc_state = DEVIDLE; 1207 return (0); 1208 } 1209 1210 /* Is there a transfer to this drive? If not, deactivate drive. */ 1211 bp = fd->sc_q.b_actf; 1212 if (bp == NULL) { 1213 fd->sc_ops = 0; 1214 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1215 fd->sc_q.b_active = 0; 1216 goto loop; 1217 } 1218 1219 if (bp->b_flags & B_FORMAT) 1220 finfo = (struct ne7_fd_formb *)bp->b_data; 1221 1222 switch (fdc->sc_state) { 1223 case DEVIDLE: 1224 fdc->sc_errors = 0; 1225 fd->sc_skip = 0; 1226 fd->sc_bcount = bp->b_bcount; 1227 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1228 untimeout(fd_motor_off, fd); 1229 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1230 fdc->sc_state = MOTORWAIT; 1231 return (1); 1232 } 1233 if ((fd->sc_flags & FD_MOTOR) == 0) { 1234 /* Turn on the motor, being careful about pairing. */ 1235 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1236 if (ofd && ofd->sc_flags & FD_MOTOR) { 1237 untimeout(fd_motor_off, ofd); 1238 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1239 } 1240 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1241 fd_set_motor(fdc); 1242 fdc->sc_state = MOTORWAIT; 1243 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1244 /* Allow .25s for motor to stabilize. */ 1245 timeout(fd_motor_on, fd, hz / 4); 1246 } else { 1247 fd->sc_flags &= ~FD_MOTOR_WAIT; 1248 goto loop; 1249 } 1250 return (1); 1251 } 1252 /* Make sure the right drive is selected. */ 1253 fd_set_motor(fdc); 1254 1255 /* fall through */ 1256 case DOSEEK: 1257 doseek: 1258 if ((fdc->sc_flags & FDC_EIS) && 1259 (bp->b_flags & B_FORMAT) == 0) { 1260 fd->sc_cylin = bp->b_cylin; 1261 /* We use implied seek */ 1262 goto doio; 1263 } 1264 1265 if (fd->sc_cylin == bp->b_cylin) 1266 goto doio; 1267 1268 /* specify command */ 1269 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1270 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1271 OUT_FDC(fdc, 6, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1272 1273 fdc->sc_istate = ISTATE_SENSEI; 1274 /* seek function */ 1275 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1276 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1277 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1278 1279 fd->sc_cylin = -1; 1280 fdc->sc_state = SEEKWAIT; 1281 fdc->sc_nstat = 0; 1282 1283 fd->sc_dk.dk_seek++; 1284 disk_busy(&fd->sc_dk); 1285 1286 timeout(fdctimeout, fdc, 4 * hz); 1287 return (1); 1288 1289 case DOIO: 1290 doio: 1291 if (finfo) 1292 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1293 (char *)finfo; 1294 type = fd->sc_type; 1295 sec = fd->sc_blkno % type->seccyl; 1296 nblks = type->seccyl - sec; 1297 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1298 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1299 fd->sc_nblks = nblks; 1300 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1301 head = sec / type->sectrac; 1302 sec -= head * type->sectrac; 1303 #ifdef DIAGNOSTIC 1304 {int block; 1305 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1306 if (block != fd->sc_blkno) { 1307 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1308 #ifdef DDB 1309 Debugger(); 1310 #endif 1311 }} 1312 #endif 1313 read = bp->b_flags & B_READ; 1314 1315 /* Setup for pseudo DMA */ 1316 fdc->sc_data = bp->b_data + fd->sc_skip; 1317 fdc->sc_tc = fd->sc_nbytes; 1318 1319 *fdc->sc_reg_drs = type->rate; 1320 #ifdef FD_DEBUG 1321 if (fdc_debug > 1) 1322 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1323 read ? "read" : "write", fd->sc_drive, 1324 fd->sc_cylin, head, sec, nblks); 1325 #endif 1326 fdc->sc_state = IOCOMPLETE; 1327 fdc->sc_istate = ISTATE_DMA; 1328 fdc->sc_nstat = 0; 1329 if (finfo) { 1330 /* formatting */ 1331 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1332 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1333 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1334 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1335 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1336 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1337 } else { 1338 if (read) 1339 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1340 else 1341 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1342 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1343 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1344 OUT_FDC(fdc, head, IOTIMEDOUT); 1345 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1346 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1347 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1348 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1349 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1350 } 1351 1352 disk_busy(&fd->sc_dk); 1353 1354 /* allow 2 seconds for operation */ 1355 timeout(fdctimeout, fdc, 2 * hz); 1356 return (1); /* will return later */ 1357 1358 case SEEKWAIT: 1359 untimeout(fdctimeout, fdc); 1360 fdc->sc_state = SEEKCOMPLETE; 1361 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1362 /* allow 1/50 second for heads to settle */ 1363 timeout(fdcpseudointr, fdc, hz / 50); 1364 return (1); /* will return later */ 1365 } 1366 1367 case SEEKCOMPLETE: 1368 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1369 1370 /* Make sure seek really happened. */ 1371 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1372 cyl != bp->b_cylin * fd->sc_type->step) { 1373 #ifdef FD_DEBUG 1374 if (fdc_debug) 1375 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1376 #endif 1377 fdcretry(fdc); 1378 goto loop; 1379 } 1380 fd->sc_cylin = bp->b_cylin; 1381 goto doio; 1382 1383 case IOTIMEDOUT: 1384 auxregbisc(AUXIO_FTC, 0); 1385 delay(10); 1386 auxregbisc(0, AUXIO_FTC); 1387 (void)fdcresult(fdc); 1388 case SEEKTIMEDOUT: 1389 case RECALTIMEDOUT: 1390 case RESETTIMEDOUT: 1391 fdcretry(fdc); 1392 goto loop; 1393 1394 case IOCOMPLETE: /* IO DONE, post-analyze */ 1395 untimeout(fdctimeout, fdc); 1396 1397 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1398 1399 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1400 #ifdef FD_DEBUG 1401 if (fdc_debug) { 1402 fdcstatus(&fd->sc_dv, 7, 1403 bp->b_flags & B_READ 1404 ? "read failed" : "write failed"); 1405 printf("blkno %d nblks %d tc %d\n", 1406 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1407 } 1408 #endif 1409 if (fdc->sc_nstat == 7 && 1410 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1411 1412 /* 1413 * Silently retry overruns if no other 1414 * error bit is set. Adjust threshold. 1415 */ 1416 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1417 if (thr < 15) { 1418 thr++; 1419 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1420 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1421 #ifdef FD_DEBUG 1422 if (fdc_debug) 1423 printf("fdc: %d -> threshold\n", thr); 1424 #endif 1425 fdconf(fdc); 1426 fdc->sc_overruns = 0; 1427 } 1428 if (++fdc->sc_overruns < 3) { 1429 fdc->sc_state = DOIO; 1430 goto loop; 1431 } 1432 } 1433 fdcretry(fdc); 1434 goto loop; 1435 } 1436 if (fdc->sc_errors) { 1437 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1438 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1439 printf("\n"); 1440 fdc->sc_errors = 0; 1441 } else { 1442 if (--fdc->sc_overruns < -20) { 1443 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1444 if (thr > 0) { 1445 thr--; 1446 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1447 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1448 #ifdef FD_DEBUG 1449 if (fdc_debug) 1450 printf("fdc: %d -> threshold\n", thr); 1451 #endif 1452 fdconf(fdc); 1453 } 1454 fdc->sc_overruns = 0; 1455 } 1456 } 1457 fd->sc_blkno += fd->sc_nblks; 1458 fd->sc_skip += fd->sc_nbytes; 1459 fd->sc_bcount -= fd->sc_nbytes; 1460 if (!finfo && fd->sc_bcount > 0) { 1461 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1462 goto doseek; 1463 } 1464 fdfinish(fd, bp); 1465 goto loop; 1466 1467 case DORESET: 1468 doreset: 1469 /* try a reset, keep motor on */ 1470 fd_set_motor(fdc); 1471 delay(100); 1472 fdc_reset(fdc); 1473 fdc->sc_nstat = 0; 1474 fdc->sc_istate = ISTATE_SENSEI; 1475 fdc->sc_state = RESETCOMPLETE; 1476 timeout(fdctimeout, fdc, hz / 2); 1477 return (1); /* will return later */ 1478 1479 case RESETCOMPLETE: 1480 untimeout(fdctimeout, fdc); 1481 fdconf(fdc); 1482 1483 /* fall through */ 1484 case DORECAL: 1485 fdc->sc_state = RECALWAIT; 1486 fdc->sc_istate = ISTATE_SENSEI; 1487 fdc->sc_nstat = 0; 1488 /* recalibrate function */ 1489 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1490 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1491 timeout(fdctimeout, fdc, 5 * hz); 1492 return (1); /* will return later */ 1493 1494 case RECALWAIT: 1495 untimeout(fdctimeout, fdc); 1496 fdc->sc_state = RECALCOMPLETE; 1497 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1498 /* allow 1/30 second for heads to settle */ 1499 timeout(fdcpseudointr, fdc, hz / 30); 1500 return (1); /* will return later */ 1501 } 1502 1503 case RECALCOMPLETE: 1504 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1505 #ifdef FD_DEBUG 1506 if (fdc_debug) 1507 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1508 #endif 1509 fdcretry(fdc); 1510 goto loop; 1511 } 1512 fd->sc_cylin = 0; 1513 goto doseek; 1514 1515 case MOTORWAIT: 1516 if (fd->sc_flags & FD_MOTOR_WAIT) 1517 return (1); /* time's not up yet */ 1518 goto doseek; 1519 1520 default: 1521 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1522 return (1); 1523 } 1524 #ifdef DIAGNOSTIC 1525 panic("fdcintr: impossible"); 1526 #endif 1527 #undef st0 1528 #undef st1 1529 #undef cyl 1530 } 1531 1532 void 1533 fdcretry(fdc) 1534 struct fdc_softc *fdc; 1535 { 1536 char bits[64]; 1537 struct fd_softc *fd; 1538 struct buf *bp; 1539 1540 fd = fdc->sc_drives.tqh_first; 1541 bp = fd->sc_q.b_actf; 1542 1543 fdc->sc_overruns = 0; 1544 if (fd->sc_opts & FDOPT_NORETRY) 1545 goto fail; 1546 1547 switch (fdc->sc_errors) { 1548 case 0: 1549 /* try again */ 1550 fdc->sc_state = 1551 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1552 break; 1553 1554 case 1: case 2: case 3: 1555 /* didn't work; try recalibrating */ 1556 fdc->sc_state = DORECAL; 1557 break; 1558 1559 case 4: 1560 /* still no go; reset the bastard */ 1561 fdc->sc_state = DORESET; 1562 break; 1563 1564 default: 1565 fail: 1566 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1567 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1568 fd->sc_skip / FDC_BSIZE, 1569 (struct disklabel *)NULL); 1570 1571 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1572 NE7_ST0BITS, bits, sizeof(bits))); 1573 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1574 NE7_ST1BITS, bits, sizeof(bits))); 1575 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1576 NE7_ST2BITS, bits, sizeof(bits))); 1577 printf(" cyl %d head %d sec %d)\n", 1578 fdc->sc_status[3], fdc->sc_status[4], 1579 fdc->sc_status[5]); 1580 } 1581 1582 bp->b_flags |= B_ERROR; 1583 bp->b_error = EIO; 1584 fdfinish(fd, bp); 1585 } 1586 fdc->sc_errors++; 1587 } 1588 1589 int 1590 fdsize(dev) 1591 dev_t dev; 1592 { 1593 1594 /* Swapping to floppies would not make sense. */ 1595 return (-1); 1596 } 1597 1598 int 1599 fddump(dev, blkno, va, size) 1600 dev_t dev; 1601 daddr_t blkno; 1602 caddr_t va; 1603 size_t size; 1604 { 1605 1606 /* Not implemented. */ 1607 return (EINVAL); 1608 } 1609 1610 int 1611 fdioctl(dev, cmd, addr, flag, p) 1612 dev_t dev; 1613 u_long cmd; 1614 caddr_t addr; 1615 int flag; 1616 struct proc *p; 1617 { 1618 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1619 struct fdformat_parms *form_parms; 1620 struct fdformat_cmd *form_cmd; 1621 struct ne7_fd_formb fd_formb; 1622 int il[FD_MAX_NSEC + 1]; 1623 int i, j; 1624 int error; 1625 1626 switch (cmd) { 1627 case DIOCGDINFO: 1628 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1629 return 0; 1630 1631 case DIOCWLABEL: 1632 if ((flag & FWRITE) == 0) 1633 return EBADF; 1634 /* XXX do something */ 1635 return (0); 1636 1637 case DIOCWDINFO: 1638 if ((flag & FWRITE) == 0) 1639 return (EBADF); 1640 1641 error = setdisklabel(fd->sc_dk.dk_label, 1642 (struct disklabel *)addr, 0, 1643 fd->sc_dk.dk_cpulabel); 1644 if (error) 1645 return (error); 1646 1647 error = writedisklabel(dev, fdstrategy, 1648 fd->sc_dk.dk_label, 1649 fd->sc_dk.dk_cpulabel); 1650 return (error); 1651 1652 case DIOCLOCK: 1653 /* 1654 * Nothing to do here, really. 1655 */ 1656 return (0); 1657 1658 case DIOCEJECT: 1659 fd_do_eject(); 1660 return (0); 1661 1662 case FDIOCGETFORMAT: 1663 form_parms = (struct fdformat_parms *)addr; 1664 form_parms->fdformat_version = FDFORMAT_VERSION; 1665 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1666 form_parms->ncyl = fd->sc_type->tracks; 1667 form_parms->nspt = fd->sc_type->sectrac; 1668 form_parms->ntrk = fd->sc_type->heads; 1669 form_parms->stepspercyl = fd->sc_type->step; 1670 form_parms->gaplen = fd->sc_type->gap2; 1671 form_parms->fillbyte = fd->sc_type->fillbyte; 1672 form_parms->interleave = fd->sc_type->interleave; 1673 switch (fd->sc_type->rate) { 1674 case FDC_500KBPS: 1675 form_parms->xfer_rate = 500 * 1024; 1676 break; 1677 case FDC_300KBPS: 1678 form_parms->xfer_rate = 300 * 1024; 1679 break; 1680 case FDC_250KBPS: 1681 form_parms->xfer_rate = 250 * 1024; 1682 break; 1683 default: 1684 return (EINVAL); 1685 } 1686 return (0); 1687 1688 case FDIOCSETFORMAT: 1689 if ((flag & FWRITE) == 0) 1690 return (EBADF); /* must be opened for writing */ 1691 1692 form_parms = (struct fdformat_parms *)addr; 1693 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1694 return (EINVAL);/* wrong version of formatting prog */ 1695 1696 i = form_parms->nbps >> 7; 1697 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1698 i & ~(1 << (ffs(i)-1))) 1699 /* not a power-of-two multiple of 128 */ 1700 return (EINVAL); 1701 1702 switch (form_parms->xfer_rate) { 1703 case 500 * 1024: 1704 fd->sc_type->rate = FDC_500KBPS; 1705 break; 1706 case 300 * 1024: 1707 fd->sc_type->rate = FDC_300KBPS; 1708 break; 1709 case 250 * 1024: 1710 fd->sc_type->rate = FDC_250KBPS; 1711 break; 1712 default: 1713 return (EINVAL); 1714 } 1715 1716 if (form_parms->nspt > FD_MAX_NSEC || 1717 form_parms->fillbyte > 0xff || 1718 form_parms->interleave > 0xff) 1719 return EINVAL; 1720 fd->sc_type->sectrac = form_parms->nspt; 1721 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1722 return EINVAL; 1723 fd->sc_type->heads = form_parms->ntrk; 1724 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1725 fd->sc_type->secsize = ffs(i)-1; 1726 fd->sc_type->gap2 = form_parms->gaplen; 1727 fd->sc_type->tracks = form_parms->ncyl; 1728 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1729 form_parms->nbps / DEV_BSIZE; 1730 fd->sc_type->step = form_parms->stepspercyl; 1731 fd->sc_type->fillbyte = form_parms->fillbyte; 1732 fd->sc_type->interleave = form_parms->interleave; 1733 return 0; 1734 1735 case FDIOCFORMAT_TRACK: 1736 if((flag & FWRITE) == 0) 1737 /* must be opened for writing */ 1738 return (EBADF); 1739 form_cmd = (struct fdformat_cmd *)addr; 1740 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1741 /* wrong version of formatting prog */ 1742 return (EINVAL); 1743 1744 if (form_cmd->head >= fd->sc_type->heads || 1745 form_cmd->cylinder >= fd->sc_type->tracks) { 1746 return (EINVAL); 1747 } 1748 1749 fd_formb.head = form_cmd->head; 1750 fd_formb.cyl = form_cmd->cylinder; 1751 fd_formb.transfer_rate = fd->sc_type->rate; 1752 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1753 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1754 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1755 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1756 1757 bzero(il,sizeof il); 1758 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1759 while (il[(j%fd_formb.fd_formb_nsecs)+1]) 1760 j++; 1761 il[(j%fd_formb.fd_formb_nsecs)+1] = i; 1762 j += fd->sc_type->interleave; 1763 } 1764 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1765 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1766 fd_formb.fd_formb_headno(i) = form_cmd->head; 1767 fd_formb.fd_formb_secno(i) = il[i+1]; 1768 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1769 } 1770 1771 return fdformat(dev, &fd_formb, p); 1772 1773 case FDIOCGETOPTS: /* get drive options */ 1774 *(int *)addr = fd->sc_opts; 1775 return (0); 1776 1777 case FDIOCSETOPTS: /* set drive options */ 1778 fd->sc_opts = *(int *)addr; 1779 return (0); 1780 1781 #ifdef DEBUG 1782 case _IO('f', 100): 1783 { 1784 int i; 1785 struct fdc_softc *fdc = (struct fdc_softc *) 1786 fd->sc_dv.dv_parent; 1787 1788 out_fdc(fdc, NE7CMD_DUMPREG); 1789 fdcresult(fdc); 1790 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1791 for (i = 0; i < fdc->sc_nstat; i++) 1792 printf(" %x", fdc->sc_status[i]); 1793 printf(">\n"); 1794 } 1795 1796 return (0); 1797 case _IOW('f', 101, int): 1798 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1799 ~CFG_THRHLD_MASK; 1800 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1801 (*(int *)addr & CFG_THRHLD_MASK); 1802 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1803 return (0); 1804 case _IO('f', 102): 1805 { 1806 int i; 1807 struct fdc_softc *fdc = (struct fdc_softc *) 1808 fd->sc_dv.dv_parent; 1809 out_fdc(fdc, NE7CMD_SENSEI); 1810 fdcresult(fdc); 1811 printf("sensei(%d regs): <", fdc->sc_nstat); 1812 for (i=0; i< fdc->sc_nstat; i++) 1813 printf(" 0x%x", fdc->sc_status[i]); 1814 } 1815 printf(">\n"); 1816 return (0); 1817 #endif 1818 default: 1819 return (ENOTTY); 1820 } 1821 1822 #ifdef DIAGNOSTIC 1823 panic("fdioctl: impossible"); 1824 #endif 1825 } 1826 1827 int 1828 fdformat(dev, finfo, p) 1829 dev_t dev; 1830 struct ne7_fd_formb *finfo; 1831 struct proc *p; 1832 { 1833 int rv = 0, s; 1834 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1835 struct fd_type *type = fd->sc_type; 1836 struct buf *bp; 1837 1838 /* set up a buffer header for fdstrategy() */ 1839 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1840 if (bp == 0) 1841 return (ENOBUFS); 1842 1843 PHOLD(p); 1844 bzero((void *)bp, sizeof(struct buf)); 1845 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1846 bp->b_proc = p; 1847 bp->b_dev = dev; 1848 1849 /* 1850 * calculate a fake blkno, so fdstrategy() would initiate a 1851 * seek to the requested cylinder 1852 */ 1853 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1854 + finfo->head * type->sectrac) * FDC_BSIZE / 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 %x count %lx\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 = FDC_BSIZE; 1904 lp->d_secpercyl = fd->sc_type->seccyl; 1905 lp->d_nsectors = fd->sc_type->sectrac; 1906 lp->d_ncylinders = fd->sc_type->tracks; 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() 1954 { 1955 1956 auxregbisc(AUXIO_FDS, AUXIO_FEJ); 1957 delay(10); 1958 auxregbisc(AUXIO_FEJ, AUXIO_FDS); 1959 } 1960 1961 #ifdef RAMDISK_HOOKS 1962 int fd_read_rd_image __P((size_t *, caddr_t *)); 1963 #endif 1964 1965 /* ARGSUSED */ 1966 void 1967 fd_mountroot_hook(dev) 1968 struct device *dev; 1969 { 1970 int c; 1971 1972 fd_do_eject(); 1973 printf("Insert filesystem floppy and press return."); 1974 for (;;) { 1975 c = cngetc(); 1976 if ((c == '\r') || (c == '\n')) { 1977 printf("\n"); 1978 break; 1979 } 1980 } 1981 #ifdef RAMDISK_HOOKS 1982 { 1983 extern int (*rd_read_image) __P((size_t *, caddr_t *)); 1984 rd_read_image = fd_read_rd_image; 1985 } 1986 #endif 1987 } 1988 1989 #ifdef RAMDISK_HOOKS 1990 1991 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 1992 1993 int 1994 fd_read_rd_image(sizep, addrp) 1995 size_t *sizep; 1996 caddr_t *addrp; 1997 { 1998 struct buf buf, *bp = &buf; 1999 dev_t dev; 2000 off_t offset; 2001 caddr_t addr; 2002 2003 dev = makedev(54,0); /* XXX */ 2004 2005 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2006 *addrp = addr; 2007 2008 if (fdopen(dev, 0, S_IFCHR, NULL)) 2009 panic("fd: mountroot: fdopen"); 2010 2011 offset = 0; 2012 2013 for (;;) { 2014 bp->b_dev = dev; 2015 bp->b_error = 0; 2016 bp->b_resid = 0; 2017 bp->b_proc = NULL; 2018 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2019 bp->b_blkno = btodb(offset); 2020 bp->b_bcount = DEV_BSIZE; 2021 bp->b_data = addr; 2022 fdstrategy(bp); 2023 while ((bp->b_flags & B_DONE) == 0) { 2024 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2025 } 2026 if (bp->b_error) 2027 panic("fd: mountroot: fdread error %d", bp->b_error); 2028 2029 if (bp->b_resid != 0) 2030 break; 2031 2032 addr += DEV_BSIZE; 2033 offset += DEV_BSIZE; 2034 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2035 break; 2036 } 2037 (void)fdclose(dev, 0, S_IFCHR, NULL); 2038 *sizep = offset; 2039 fd_do_eject(); 2040 return (0); 2041 } 2042 #endif 2043
Indexes created Fri Oct 03 02:09:57 GMT 2025