fd.c revision 1.47
1 /* $NetBSD: fd.c,v 1.47 1997/01/31 02:16:53 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles Hannum. 5 * Copyright (c) 1995 Paul Kranenburg. 6 * Copyright (c) 1990 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Don Ahn. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)fd.c 7.4 (Berkeley) 5/25/91 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/file.h> 47 #include <sys/ioctl.h> 48 #include <sys/device.h> 49 #include <sys/disklabel.h> 50 #include <sys/dkstat.h> 51 #include <sys/disk.h> 52 #include <sys/fdio.h> 53 #include <sys/buf.h> 54 #include <sys/malloc.h> 55 #include <sys/proc.h> 56 #include <sys/uio.h> 57 #include <sys/stat.h> 58 #include <sys/syslog.h> 59 #include <sys/queue.h> 60 #include <sys/conf.h> 61 62 #include <dev/cons.h> 63 64 #include <machine/cpu.h> 65 #include <machine/autoconf.h> 66 #include <machine/conf.h> 67 68 #include <sparc/sparc/auxreg.h> 69 #include <sparc/dev/fdreg.h> 70 #include <sparc/dev/fdvar.h> 71 72 #define FDUNIT(dev) (minor(dev) / 8) 73 #define FDTYPE(dev) (minor(dev) % 8) 74 75 /* XXX misuse a flag to identify format operation */ 76 #define B_FORMAT B_XXX 77 #define b_cylin b_resid 78 79 #define FD_DEBUG 80 #ifdef FD_DEBUG 81 int fdc_debug = 0; 82 #endif 83 84 enum fdc_state { 85 DEVIDLE = 0, 86 MOTORWAIT, 87 DOSEEK, 88 SEEKWAIT, 89 SEEKTIMEDOUT, 90 SEEKCOMPLETE, 91 DOIO, 92 IOCOMPLETE, 93 IOTIMEDOUT, 94 DORESET, 95 RESETCOMPLETE, 96 RESETTIMEDOUT, 97 DORECAL, 98 RECALWAIT, 99 RECALTIMEDOUT, 100 RECALCOMPLETE, 101 }; 102 103 /* software state, per controller */ 104 struct fdc_softc { 105 struct device sc_dev; /* boilerplate */ 106 struct intrhand sc_sih; 107 struct intrhand sc_hih; 108 caddr_t sc_reg; 109 struct fd_softc *sc_fd[4]; /* pointers to children */ 110 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 111 enum fdc_state sc_state; 112 int sc_flags; 113 #define FDC_82077 0x01 114 #define FDC_NEEDHEADSETTLE 0x02 115 #define FDC_EIS 0x04 116 int sc_errors; /* number of retries so far */ 117 int sc_overruns; /* number of DMA overruns */ 118 int sc_cfg; /* current configuration */ 119 struct fdcio sc_io; 120 #define sc_reg_msr sc_io.fdcio_reg_msr 121 #define sc_reg_fifo sc_io.fdcio_reg_fifo 122 #define sc_reg_dor sc_io.fdcio_reg_dor 123 #define sc_reg_drs sc_io.fdcio_reg_msr 124 #define sc_istate sc_io.fdcio_istate 125 #define sc_data sc_io.fdcio_data 126 #define sc_tc sc_io.fdcio_tc 127 #define sc_nstat sc_io.fdcio_nstat 128 #define sc_status sc_io.fdcio_status 129 #define sc_intrcnt sc_io.fdcio_intrcnt 130 }; 131 132 #ifndef FDC_C_HANDLER 133 extern struct fdcio *fdciop; 134 #endif 135 136 /* controller driver configuration */ 137 int fdcmatch __P((struct device *, struct cfdata *, void *)); 138 void fdcattach __P((struct device *, struct device *, void *)); 139 140 struct cfattach fdc_ca = { 141 sizeof(struct fdc_softc), fdcmatch, fdcattach 142 }; 143 144 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 *, struct cfdata *, 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 struct cfdata *match; 282 void *aux; 283 { 284 register struct confargs *ca = aux; 285 register struct romaux *ra = &ca->ca_ra; 286 287 /* 288 * Floppy doesn't exist on sun4. 289 */ 290 if (CPU_ISSUN4) 291 return (0); 292 293 /* 294 * Floppy controller is on mainbus on sun4c. 295 */ 296 if ((CPU_ISSUN4C) && (ca->ca_bustype != BUS_MAIN)) 297 return (0); 298 299 /* 300 * Floppy controller is on obio on sun4m. 301 */ 302 if ((CPU_ISSUN4M) && (ca->ca_bustype != BUS_OBIO)) 303 return (0); 304 305 /* Sun PROMs call the controller an "fd" or "SUNW,fdtwo" */ 306 if (strcmp(OBP_FDNAME, ra->ra_name)) 307 return (0); 308 309 if (ca->ca_ra.ra_vaddr && 310 probeget(ca->ca_ra.ra_vaddr, 1) == -1) { 311 return (0); 312 } 313 314 return (1); 315 } 316 317 /* 318 * Arguments passed between fdcattach and fdprobe. 319 */ 320 struct fdc_attach_args { 321 int fa_drive; 322 struct bootpath *fa_bootpath; 323 struct fd_type *fa_deftype; 324 }; 325 326 /* 327 * Print the location of a disk drive (called just before attaching the 328 * the drive). If `fdc' is not NULL, the drive was found but was not 329 * in the system config file; print the drive name as well. 330 * Return QUIET (config_find ignores this if the device was configured) to 331 * avoid printing `fdN not configured' messages. 332 */ 333 int 334 fdprint(aux, fdc) 335 void *aux; 336 const char *fdc; 337 { 338 register struct fdc_attach_args *fa = aux; 339 340 if (!fdc) 341 printf(" drive %d", fa->fa_drive); 342 return (QUIET); 343 } 344 345 static void 346 fdconf(fdc) 347 struct fdc_softc *fdc; 348 { 349 int vroom; 350 351 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 352 return; 353 354 /* 355 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 356 * the PROM thinks is appropriate. 357 */ 358 if ((vroom = fdc->sc_status[7]) == 0) 359 vroom = 0x64; 360 361 /* Configure controller to use FIFO and Implied Seek */ 362 out_fdc(fdc, NE7CMD_CFG); 363 out_fdc(fdc, vroom); 364 out_fdc(fdc, fdc->sc_cfg); 365 out_fdc(fdc, 0); /* PRETRK */ 366 /* No result phase */ 367 } 368 369 void 370 fdcattach(parent, self, aux) 371 struct device *parent, *self; 372 void *aux; 373 { 374 register struct confargs *ca = aux; 375 struct fdc_softc *fdc = (void *)self; 376 struct fdc_attach_args fa; 377 struct bootpath *bp; 378 int pri; 379 char code; 380 381 if (ca->ca_ra.ra_vaddr) 382 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 383 else 384 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_reg, 0, 385 ca->ca_ra.ra_len, 386 ca->ca_bustype); 387 388 fdc->sc_state = DEVIDLE; 389 fdc->sc_istate = ISTATE_IDLE; 390 fdc->sc_flags |= FDC_EIS; 391 TAILQ_INIT(&fdc->sc_drives); 392 393 pri = ca->ca_ra.ra_intr[0].int_pri; 394 #ifdef FDC_C_HANDLER 395 fdc->sc_hih.ih_fun = (void *)fdchwintr; 396 fdc->sc_hih.ih_arg = fdc; 397 intr_establish(pri, &fdc->sc_hih); 398 #else 399 fdciop = &fdc->sc_io; 400 intr_fasttrap(pri, fdchwintr); 401 #endif 402 fdc->sc_sih.ih_fun = (void *)fdcswintr; 403 fdc->sc_sih.ih_arg = fdc; 404 intr_establish(PIL_FDSOFT, &fdc->sc_sih); 405 406 /* Assume a 82077 */ 407 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 408 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 409 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 410 411 code = '7'; 412 if (*fdc->sc_reg_dor == NE7_RQM) { 413 /* 414 * This hack from Chris Torek: apparently DOR really 415 * addresses MSR/DRS on a 82072. 416 * We used to rely on the VERSION command to tell the 417 * difference (which did not work). 418 */ 419 *fdc->sc_reg_dor = FDC_250KBPS; 420 if (*fdc->sc_reg_dor == NE7_RQM) 421 code = '2'; 422 } 423 if (code == '7') { 424 fdc->sc_flags |= FDC_82077; 425 } else { 426 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 427 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 428 fdc->sc_reg_dor = 0; 429 } 430 431 #ifdef FD_DEBUG 432 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 433 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 434 if (fdc_debug) 435 printf("[version cmd]"); 436 } 437 #endif 438 439 /* 440 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 441 * Note: CFG_EFIFO is active-low, initial threshold value: 8 442 */ 443 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 444 fdconf(fdc); 445 446 if (fdc->sc_flags & FDC_82077) { 447 /* Lock configuration across soft resets. */ 448 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 449 if (fdcresult(fdc) != 1) 450 printf(" CFGLOCK: unexpected response"); 451 } 452 453 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 454 455 printf(" pri %d, softpri %d: chip 8207%c\n", pri, PIL_FDSOFT, code); 456 457 /* 458 * Controller and drives are represented by one and the same 459 * Openprom node, so we can as well check for the floppy boots here. 460 */ 461 fa.fa_bootpath = 0; 462 if ((bp = ca->ca_ra.ra_bp) && strcmp(bp->name, OBP_FDNAME) == 0) { 463 464 switch (ca->ca_bustype) { 465 case BUS_MAIN: 466 /* 467 * We can get the bootpath in several different 468 * formats! The faked v1 bootpath looks like /fd@0,0. 469 * The v2 bootpath is either just /fd0, in which case 470 * `bp->val[0]' will have been set to -1, or /fd@x,y 471 * where <x,y> is the prom address specifier. 472 */ 473 if (((bp->val[0] == ca->ca_ra.ra_iospace) && 474 (bp->val[1] == (int)ca->ca_ra.ra_paddr)) || 475 476 ((bp->val[0] == -1) && /* v2: /fd0 */ 477 (bp->val[1] == 0)) || 478 479 ((bp->val[0] == 0) && /* v1: /fd@0,0 */ 480 (bp->val[1] == 0)) 481 ) 482 fa.fa_bootpath = bp; 483 break; 484 485 case BUS_OBIO: 486 /* 487 * floppy controller on obio (such as on the sun4m), 488 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 489 * We use "slot, offset" to determine if this is the 490 * right one. 491 */ 492 if ((bp->val[0] == ca->ca_slot) && 493 (bp->val[1] == ca->ca_offset)) 494 fa.fa_bootpath = bp; 495 break; 496 } 497 498 } 499 500 /* physical limit: four drives per controller. */ 501 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 502 fa.fa_deftype = NULL; /* unknown */ 503 fa.fa_deftype = &fd_types[0]; /* XXX */ 504 (void)config_found(self, (void *)&fa, fdprint); 505 } 506 507 bootpath_store(1, NULL); 508 } 509 510 int 511 fdmatch(parent, match, aux) 512 struct device *parent; 513 struct cfdata *match; 514 void *aux; 515 { 516 struct fdc_softc *fdc = (void *)parent; 517 struct fdc_attach_args *fa = aux; 518 int drive = fa->fa_drive; 519 int n, ok; 520 521 if (drive > 0) 522 /* XXX - for now, punt > 1 drives */ 523 return (0); 524 525 if (fdc->sc_flags & FDC_82077) { 526 /* select drive and turn on motor */ 527 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 528 /* wait for motor to spin up */ 529 delay(250000); 530 } else { 531 auxregbisc(AUXIO_FDS, 0); 532 } 533 fdc->sc_nstat = 0; 534 out_fdc(fdc, NE7CMD_RECAL); 535 out_fdc(fdc, drive); 536 /* wait for recalibrate */ 537 for (n = 0; n < 10000; n++) { 538 delay(1000); 539 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 540 /* wait a bit longer till device *really* is ready */ 541 delay(100000); 542 if (out_fdc(fdc, NE7CMD_SENSEI)) 543 break; 544 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 545 /* 546 * Got `invalid command'; we interpret it 547 * to mean that the re-calibrate hasn't in 548 * fact finished yet 549 */ 550 continue; 551 break; 552 } 553 } 554 n = fdc->sc_nstat; 555 #ifdef FD_DEBUG 556 if (fdc_debug) { 557 int i; 558 printf("fdprobe: %d stati:", n); 559 for (i = 0; i < n; i++) 560 printf(" %x", fdc->sc_status[i]); 561 printf("\n"); 562 } 563 #endif 564 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 565 566 /* turn off motor */ 567 if (fdc->sc_flags & FDC_82077) { 568 /* select drive and turn on motor */ 569 *fdc->sc_reg_dor = FDO_FRST; 570 } else { 571 auxregbisc(0, AUXIO_FDS); 572 } 573 574 return (ok); 575 } 576 577 /* 578 * Controller is working, and drive responded. Attach it. 579 */ 580 void 581 fdattach(parent, self, aux) 582 struct device *parent, *self; 583 void *aux; 584 { 585 struct fdc_softc *fdc = (void *)parent; 586 struct fd_softc *fd = (void *)self; 587 struct fdc_attach_args *fa = aux; 588 struct fd_type *type = fa->fa_deftype; 589 int drive = fa->fa_drive; 590 591 /* XXX Allow `flags' to override device type? */ 592 593 if (type) 594 printf(": %s %d cyl, %d head, %d sec\n", type->name, 595 type->tracks, type->heads, type->sectrac); 596 else 597 printf(": density unknown\n"); 598 599 fd->sc_cylin = -1; 600 fd->sc_drive = drive; 601 fd->sc_deftype = type; 602 fdc->sc_fd[drive] = fd; 603 604 /* 605 * Initialize and attach the disk structure. 606 */ 607 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 608 fd->sc_dk.dk_driver = &fddkdriver; 609 disk_attach(&fd->sc_dk); 610 611 /* 612 * We're told if we're the boot device in fdcattach(). 613 */ 614 if (fa->fa_bootpath) 615 fa->fa_bootpath->dev = &fd->sc_dv; 616 617 /* 618 * Establish a mountroot_hook anyway in case we booted 619 * with RB_ASKNAME and get selected as the boot device. 620 */ 621 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 622 623 /* Make sure the drive motor gets turned off at shutdown time. */ 624 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 625 626 /* XXX Need to do some more fiddling with sc_dk. */ 627 dk_establish(&fd->sc_dk, &fd->sc_dv); 628 } 629 630 __inline struct fd_type * 631 fd_dev_to_type(fd, dev) 632 struct fd_softc *fd; 633 dev_t dev; 634 { 635 int type = FDTYPE(dev); 636 637 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 638 return (NULL); 639 return (type ? &fd_types[type - 1] : fd->sc_deftype); 640 } 641 642 void 643 fdstrategy(bp) 644 register struct buf *bp; /* IO operation to perform */ 645 { 646 struct fd_softc *fd; 647 int unit = FDUNIT(bp->b_dev); 648 int sz; 649 int s; 650 651 /* Valid unit, controller, and request? */ 652 if (unit >= fd_cd.cd_ndevs || 653 (fd = fd_cd.cd_devs[unit]) == 0 || 654 bp->b_blkno < 0 || 655 ((bp->b_bcount % FDC_BSIZE) != 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, FDC_BSIZE); 666 667 if (bp->b_blkno + sz > fd->sc_type->size) { 668 sz = fd->sc_type->size - bp->b_blkno; 669 if (sz == 0) { 670 /* If exactly at end of disk, return EOF. */ 671 bp->b_resid = bp->b_bcount; 672 goto done; 673 } 674 if (sz < 0) { 675 /* If past end of disk, return EINVAL. */ 676 bp->b_error = EINVAL; 677 goto bad; 678 } 679 /* Otherwise, truncate request. */ 680 bp->b_bcount = sz << DEV_BSHIFT; 681 } 682 683 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 684 685 #ifdef FD_DEBUG 686 if (fdc_debug > 1) 687 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 688 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 689 #endif 690 691 /* Queue transfer on drive, activate drive and controller if idle. */ 692 s = splbio(); 693 disksort(&fd->sc_q, bp); 694 untimeout(fd_motor_off, fd); /* a good idea */ 695 if (!fd->sc_q.b_active) 696 fdstart(fd); 697 #ifdef DIAGNOSTIC 698 else { 699 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 700 if (fdc->sc_state == DEVIDLE) { 701 printf("fdstrategy: controller inactive\n"); 702 fdcstart(fdc); 703 } 704 } 705 #endif 706 splx(s); 707 return; 708 709 bad: 710 bp->b_flags |= B_ERROR; 711 done: 712 /* Toss transfer; we're done early. */ 713 biodone(bp); 714 } 715 716 void 717 fdstart(fd) 718 struct fd_softc *fd; 719 { 720 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 721 int active = fdc->sc_drives.tqh_first != 0; 722 723 /* Link into controller queue. */ 724 fd->sc_q.b_active = 1; 725 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 726 727 /* If controller not already active, start it. */ 728 if (!active) 729 fdcstart(fdc); 730 } 731 732 void 733 fdfinish(fd, bp) 734 struct fd_softc *fd; 735 struct buf *bp; 736 { 737 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 738 739 /* 740 * Move this drive to the end of the queue to give others a `fair' 741 * chance. We only force a switch if N operations are completed while 742 * another drive is waiting to be serviced, since there is a long motor 743 * startup delay whenever we switch. 744 */ 745 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 746 fd->sc_ops = 0; 747 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 748 if (bp->b_actf) { 749 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 750 } else 751 fd->sc_q.b_active = 0; 752 } 753 bp->b_resid = fd->sc_bcount; 754 fd->sc_skip = 0; 755 fd->sc_q.b_actf = bp->b_actf; 756 757 biodone(bp); 758 /* turn off motor 5s from now */ 759 timeout(fd_motor_off, fd, 5 * hz); 760 fdc->sc_state = DEVIDLE; 761 } 762 763 void 764 fdc_reset(fdc) 765 struct fdc_softc *fdc; 766 { 767 if (fdc->sc_flags & FDC_82077) { 768 *fdc->sc_reg_dor = FDO_MOEN(0); 769 } 770 771 *fdc->sc_reg_drs = DRS_RESET; 772 delay(10); 773 *fdc->sc_reg_drs = 0; 774 #ifdef FD_DEBUG 775 if (fdc_debug) 776 printf("fdc reset\n"); 777 #endif 778 } 779 780 void 781 fd_set_motor(fdc) 782 struct fdc_softc *fdc; 783 { 784 struct fd_softc *fd; 785 u_char status; 786 int n; 787 788 if (fdc->sc_flags & FDC_82077) { 789 status = FDO_FRST | FDO_FDMAEN; 790 if ((fd = fdc->sc_drives.tqh_first) != NULL) 791 status |= fd->sc_drive; 792 793 for (n = 0; n < 4; n++) 794 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 795 status |= FDO_MOEN(n); 796 *fdc->sc_reg_dor = status; 797 } else { 798 int on = 0; 799 800 for (n = 0; n < 4; n++) 801 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 802 on = 1; 803 if (on) { 804 auxregbisc(AUXIO_FDS, 0); 805 } else { 806 auxregbisc(0, AUXIO_FDS); 807 } 808 } 809 } 810 811 void 812 fd_motor_off(arg) 813 void *arg; 814 { 815 struct fd_softc *fd = arg; 816 int s; 817 818 s = splbio(); 819 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 820 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 821 splx(s); 822 } 823 824 void 825 fd_motor_on(arg) 826 void *arg; 827 { 828 struct fd_softc *fd = arg; 829 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 830 int s; 831 832 s = splbio(); 833 fd->sc_flags &= ~FD_MOTOR_WAIT; 834 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 835 (void) fdcstate(fdc); 836 splx(s); 837 } 838 839 int 840 fdcresult(fdc) 841 struct fdc_softc *fdc; 842 { 843 u_char i; 844 int j = 100000, 845 n = 0; 846 847 for (; j; j--) { 848 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 849 if (i == NE7_RQM) 850 return (fdc->sc_nstat = n); 851 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 852 if (n >= sizeof(fdc->sc_status)) { 853 log(LOG_ERR, "fdcresult: overrun\n"); 854 return (-1); 855 } 856 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 857 } else 858 delay(10); 859 } 860 log(LOG_ERR, "fdcresult: timeout\n"); 861 return (fdc->sc_nstat = -1); 862 } 863 864 int 865 out_fdc(fdc, x) 866 struct fdc_softc *fdc; 867 u_char x; 868 { 869 int i = 100000; 870 871 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 872 delay(1); 873 if (i <= 0) 874 return (-1); 875 876 *fdc->sc_reg_fifo = x; 877 return (0); 878 } 879 880 int 881 fdopen(dev, flags, fmt, p) 882 dev_t dev; 883 int flags, fmt; 884 struct proc *p; 885 { 886 int unit, pmask; 887 struct fd_softc *fd; 888 struct fd_type *type; 889 890 unit = FDUNIT(dev); 891 if (unit >= fd_cd.cd_ndevs) 892 return (ENXIO); 893 fd = fd_cd.cd_devs[unit]; 894 if (fd == 0) 895 return (ENXIO); 896 type = fd_dev_to_type(fd, dev); 897 if (type == NULL) 898 return (ENXIO); 899 900 if ((fd->sc_flags & FD_OPEN) != 0 && 901 fd->sc_type != type) 902 return (EBUSY); 903 904 fd->sc_type = type; 905 fd->sc_cylin = -1; 906 fd->sc_flags |= FD_OPEN; 907 908 /* 909 * Only update the disklabel if we're not open anywhere else. 910 */ 911 if (fd->sc_dk.dk_openmask == 0) 912 fdgetdisklabel(dev); 913 914 pmask = (1 << DISKPART(dev)); 915 916 switch (fmt) { 917 case S_IFCHR: 918 fd->sc_dk.dk_copenmask |= pmask; 919 break; 920 921 case S_IFBLK: 922 fd->sc_dk.dk_bopenmask |= pmask; 923 break; 924 } 925 fd->sc_dk.dk_openmask = 926 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 927 928 return (0); 929 } 930 931 int 932 fdclose(dev, flags, fmt, p) 933 dev_t dev; 934 int flags, fmt; 935 struct proc *p; 936 { 937 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 938 int pmask = (1 << DISKPART(dev)); 939 940 fd->sc_flags &= ~FD_OPEN; 941 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 942 943 switch (fmt) { 944 case S_IFCHR: 945 fd->sc_dk.dk_copenmask &= ~pmask; 946 break; 947 948 case S_IFBLK: 949 fd->sc_dk.dk_bopenmask &= ~pmask; 950 break; 951 } 952 fd->sc_dk.dk_openmask = 953 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 954 955 return (0); 956 } 957 958 int 959 fdread(dev, uio, flag) 960 dev_t dev; 961 struct uio *uio; 962 int flag; 963 { 964 965 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 966 } 967 968 int 969 fdwrite(dev, uio, flag) 970 dev_t dev; 971 struct uio *uio; 972 int flag; 973 { 974 975 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 976 } 977 978 void 979 fdcstart(fdc) 980 struct fdc_softc *fdc; 981 { 982 983 #ifdef DIAGNOSTIC 984 /* only got here if controller's drive queue was inactive; should 985 be in idle state */ 986 if (fdc->sc_state != DEVIDLE) { 987 printf("fdcstart: not idle\n"); 988 return; 989 } 990 #endif 991 (void) fdcstate(fdc); 992 } 993 994 void 995 fdcstatus(dv, n, s) 996 struct device *dv; 997 int n; 998 char *s; 999 { 1000 struct fdc_softc *fdc = (void *)dv->dv_parent; 1001 char bits[64]; 1002 #if 0 1003 /* 1004 * A 82072 seems to return <invalid command> on 1005 * gratuitous Sense Interrupt commands. 1006 */ 1007 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1008 out_fdc(fdc, NE7CMD_SENSEI); 1009 (void) fdcresult(fdc); 1010 n = 2; 1011 } 1012 #endif 1013 1014 /* Just print last status */ 1015 n = fdc->sc_nstat; 1016 1017 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1018 1019 switch (n) { 1020 case 0: 1021 printf("\n"); 1022 break; 1023 case 2: 1024 printf(" (st0 %s cyl %d)\n", 1025 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1026 bits, sizeof(bits)), fdc->sc_status[1]); 1027 break; 1028 case 7: 1029 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1030 NE7_ST0BITS, bits, sizeof(bits))); 1031 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1032 NE7_ST1BITS, bits, sizeof(bits))); 1033 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1034 NE7_ST2BITS, bits, sizeof(bits))); 1035 printf(" cyl %d head %d sec %d)\n", 1036 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1037 break; 1038 #ifdef DIAGNOSTIC 1039 default: 1040 printf(" fdcstatus: weird size: %d\n", n); 1041 break; 1042 #endif 1043 } 1044 } 1045 1046 void 1047 fdctimeout(arg) 1048 void *arg; 1049 { 1050 struct fdc_softc *fdc = arg; 1051 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1052 int s; 1053 1054 s = splbio(); 1055 fdcstatus(&fd->sc_dv, 0, "timeout"); 1056 1057 if (fd->sc_q.b_actf) 1058 fdc->sc_state++; 1059 else 1060 fdc->sc_state = DEVIDLE; 1061 1062 (void) fdcstate(fdc); 1063 splx(s); 1064 } 1065 1066 void 1067 fdcpseudointr(arg) 1068 void *arg; 1069 { 1070 struct fdc_softc *fdc = arg; 1071 int s; 1072 1073 /* Just ensure it has the right spl. */ 1074 s = splbio(); 1075 (void) fdcstate(fdc); 1076 splx(s); 1077 } 1078 1079 1080 #ifdef FDC_C_HANDLER 1081 /* 1082 * hardware interrupt entry point: must be converted to `fast' 1083 * (in-window) handler. 1084 */ 1085 int 1086 fdchwintr(fdc) 1087 struct fdc_softc *fdc; 1088 { 1089 struct buf *bp; 1090 int read; 1091 1092 switch (fdc->sc_istate) { 1093 case ISTATE_IDLE: 1094 return (0); 1095 case ISTATE_SENSEI: 1096 out_fdc(fdc, NE7CMD_SENSEI); 1097 fdcresult(fdc); 1098 fdc->sc_istate = ISTATE_IDLE; 1099 FD_SET_SWINTR; 1100 return (1); 1101 case ISTATE_SPURIOUS: 1102 auxregbisc(0, AUXIO_FDS); /* Does this help? */ 1103 fdcresult(fdc); 1104 fdc->sc_istate = ISTATE_SPURIOUS; 1105 printf("fdc: stray hard interrupt... "); 1106 FD_SET_SWINTR; 1107 return (1); 1108 case ISTATE_DMA: 1109 break; 1110 default: 1111 printf("fdc: goofed ...\n"); 1112 return (1); 1113 } 1114 1115 read = bp->b_flags & B_READ; 1116 for (;;) { 1117 register int msr; 1118 1119 msr = *fdc->sc_reg_msr; 1120 1121 if ((msr & NE7_RQM) == 0) 1122 break; 1123 1124 if ((msr & NE7_NDM) == 0) { 1125 fdcresult(fdc); 1126 fdc->sc_istate = ISTATE_IDLE; 1127 ienab_bis(IE_FDSOFT); 1128 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1129 break; 1130 } 1131 1132 if (msr & NE7_DIO) { 1133 #ifdef DIAGNOSTIC 1134 if (!read) 1135 printf("fdxfer: false read\n"); 1136 #endif 1137 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1138 } else { 1139 #ifdef DIAGNOSTIC 1140 if (read) 1141 printf("fdxfer: false write\n"); 1142 #endif 1143 *fdc->sc_reg_fifo = *fdc->sc_data++; 1144 } 1145 if (--fdc->sc_tc == 0) { 1146 auxregbisc(AUXIO_FTC, 0); 1147 fdc->sc_istate = ISTATE_IDLE; 1148 delay(10); 1149 auxregbisc(0, AUXIO_FTC); 1150 fdcresult(fdc); 1151 FD_SET_SWINTR; 1152 break; 1153 } 1154 } 1155 return (1); 1156 } 1157 #endif 1158 1159 int 1160 fdcswintr(fdc) 1161 struct fdc_softc *fdc; 1162 { 1163 int s; 1164 1165 if (fdc->sc_istate != ISTATE_DONE) 1166 return (0); 1167 1168 fdc->sc_istate = ISTATE_IDLE; 1169 s = splbio(); 1170 fdcstate(fdc); 1171 splx(s); 1172 return (1); 1173 } 1174 1175 int 1176 fdcstate(fdc) 1177 struct fdc_softc *fdc; 1178 { 1179 #define st0 fdc->sc_status[0] 1180 #define st1 fdc->sc_status[1] 1181 #define cyl fdc->sc_status[1] 1182 #define OUT_FDC(fdc, c, s) \ 1183 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1184 1185 struct fd_softc *fd; 1186 struct buf *bp; 1187 int read, head, sec, nblks; 1188 struct fd_type *type; 1189 struct ne7_fd_formb *finfo = NULL; 1190 1191 1192 if (fdc->sc_istate != ISTATE_IDLE) { 1193 /* Trouble... */ 1194 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1195 fdc->sc_state, fdc->sc_istate); 1196 fdc->sc_istate = ISTATE_IDLE; 1197 if (fdc->sc_state == RESETCOMPLETE || 1198 fdc->sc_state == RESETTIMEDOUT) { 1199 panic("fdcintr: spurious interrupt can't be cleared"); 1200 } 1201 goto doreset; 1202 } 1203 1204 loop: 1205 /* Is there a drive for the controller to do a transfer with? */ 1206 fd = fdc->sc_drives.tqh_first; 1207 if (fd == NULL) { 1208 fdc->sc_state = DEVIDLE; 1209 return (0); 1210 } 1211 1212 /* Is there a transfer to this drive? If not, deactivate drive. */ 1213 bp = fd->sc_q.b_actf; 1214 if (bp == NULL) { 1215 fd->sc_ops = 0; 1216 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1217 fd->sc_q.b_active = 0; 1218 goto loop; 1219 } 1220 1221 if (bp->b_flags & B_FORMAT) 1222 finfo = (struct ne7_fd_formb *)bp->b_data; 1223 1224 switch (fdc->sc_state) { 1225 case DEVIDLE: 1226 fdc->sc_errors = 0; 1227 fd->sc_skip = 0; 1228 fd->sc_bcount = bp->b_bcount; 1229 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1230 untimeout(fd_motor_off, fd); 1231 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1232 fdc->sc_state = MOTORWAIT; 1233 return (1); 1234 } 1235 if ((fd->sc_flags & FD_MOTOR) == 0) { 1236 /* Turn on the motor, being careful about pairing. */ 1237 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1238 if (ofd && ofd->sc_flags & FD_MOTOR) { 1239 untimeout(fd_motor_off, ofd); 1240 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1241 } 1242 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1243 fd_set_motor(fdc); 1244 fdc->sc_state = MOTORWAIT; 1245 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1246 /* Allow .25s for motor to stabilize. */ 1247 timeout(fd_motor_on, fd, hz / 4); 1248 } else { 1249 fd->sc_flags &= ~FD_MOTOR_WAIT; 1250 goto loop; 1251 } 1252 return (1); 1253 } 1254 /* Make sure the right drive is selected. */ 1255 fd_set_motor(fdc); 1256 1257 /* fall through */ 1258 case DOSEEK: 1259 doseek: 1260 if ((fdc->sc_flags & FDC_EIS) && 1261 (bp->b_flags & B_FORMAT) == 0) { 1262 fd->sc_cylin = bp->b_cylin; 1263 /* We use implied seek */ 1264 goto doio; 1265 } 1266 1267 if (fd->sc_cylin == bp->b_cylin) 1268 goto doio; 1269 1270 /* specify command */ 1271 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1272 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1273 OUT_FDC(fdc, 6, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1274 1275 fdc->sc_istate = ISTATE_SENSEI; 1276 /* seek function */ 1277 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1278 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1279 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1280 1281 fd->sc_cylin = -1; 1282 fdc->sc_state = SEEKWAIT; 1283 fdc->sc_nstat = 0; 1284 1285 fd->sc_dk.dk_seek++; 1286 disk_busy(&fd->sc_dk); 1287 1288 timeout(fdctimeout, fdc, 4 * hz); 1289 return (1); 1290 1291 case DOIO: 1292 doio: 1293 if (finfo) 1294 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1295 (char *)finfo; 1296 type = fd->sc_type; 1297 sec = fd->sc_blkno % type->seccyl; 1298 nblks = type->seccyl - sec; 1299 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1300 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1301 fd->sc_nblks = nblks; 1302 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1303 head = sec / type->sectrac; 1304 sec -= head * type->sectrac; 1305 #ifdef DIAGNOSTIC 1306 {int block; 1307 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1308 if (block != fd->sc_blkno) { 1309 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1310 #ifdef DDB 1311 Debugger(); 1312 #endif 1313 }} 1314 #endif 1315 read = bp->b_flags & B_READ; 1316 1317 /* Setup for pseudo DMA */ 1318 fdc->sc_data = bp->b_data + fd->sc_skip; 1319 fdc->sc_tc = fd->sc_nbytes; 1320 1321 *fdc->sc_reg_drs = type->rate; 1322 #ifdef FD_DEBUG 1323 if (fdc_debug > 1) 1324 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1325 read ? "read" : "write", fd->sc_drive, 1326 fd->sc_cylin, head, sec, nblks); 1327 #endif 1328 fdc->sc_state = IOCOMPLETE; 1329 fdc->sc_istate = ISTATE_DMA; 1330 fdc->sc_nstat = 0; 1331 if (finfo) { 1332 /* formatting */ 1333 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1334 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1335 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1336 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1337 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1338 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1339 } else { 1340 if (read) 1341 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1342 else 1343 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1344 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1345 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1346 OUT_FDC(fdc, head, IOTIMEDOUT); 1347 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1348 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1349 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1350 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1351 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1352 } 1353 1354 disk_busy(&fd->sc_dk); 1355 1356 /* allow 2 seconds for operation */ 1357 timeout(fdctimeout, fdc, 2 * hz); 1358 return (1); /* will return later */ 1359 1360 case SEEKWAIT: 1361 untimeout(fdctimeout, fdc); 1362 fdc->sc_state = SEEKCOMPLETE; 1363 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1364 /* allow 1/50 second for heads to settle */ 1365 timeout(fdcpseudointr, fdc, hz / 50); 1366 return (1); /* will return later */ 1367 } 1368 1369 case SEEKCOMPLETE: 1370 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1371 1372 /* Make sure seek really happened. */ 1373 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1374 cyl != bp->b_cylin * fd->sc_type->step) { 1375 #ifdef FD_DEBUG 1376 if (fdc_debug) 1377 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1378 #endif 1379 fdcretry(fdc); 1380 goto loop; 1381 } 1382 fd->sc_cylin = bp->b_cylin; 1383 goto doio; 1384 1385 case IOTIMEDOUT: 1386 auxregbisc(AUXIO_FTC, 0); 1387 delay(10); 1388 auxregbisc(0, AUXIO_FTC); 1389 (void)fdcresult(fdc); 1390 case SEEKTIMEDOUT: 1391 case RECALTIMEDOUT: 1392 case RESETTIMEDOUT: 1393 fdcretry(fdc); 1394 goto loop; 1395 1396 case IOCOMPLETE: /* IO DONE, post-analyze */ 1397 untimeout(fdctimeout, fdc); 1398 1399 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1400 1401 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1402 #ifdef FD_DEBUG 1403 if (fdc_debug) { 1404 fdcstatus(&fd->sc_dv, 7, 1405 bp->b_flags & B_READ 1406 ? "read failed" : "write failed"); 1407 printf("blkno %d nblks %d tc %d\n", 1408 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1409 } 1410 #endif 1411 if (fdc->sc_nstat == 7 && 1412 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1413 1414 /* 1415 * Silently retry overruns if no other 1416 * error bit is set. Adjust threshold. 1417 */ 1418 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1419 if (thr < 15) { 1420 thr++; 1421 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1422 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1423 #ifdef FD_DEBUG 1424 if (fdc_debug) 1425 printf("fdc: %d -> threshold\n", thr); 1426 #endif 1427 fdconf(fdc); 1428 fdc->sc_overruns = 0; 1429 } 1430 if (++fdc->sc_overruns < 3) { 1431 fdc->sc_state = DOIO; 1432 goto loop; 1433 } 1434 } 1435 fdcretry(fdc); 1436 goto loop; 1437 } 1438 if (fdc->sc_errors) { 1439 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1440 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1441 printf("\n"); 1442 fdc->sc_errors = 0; 1443 } else { 1444 if (--fdc->sc_overruns < -20) { 1445 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1446 if (thr > 0) { 1447 thr--; 1448 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1449 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1450 #ifdef FD_DEBUG 1451 if (fdc_debug) 1452 printf("fdc: %d -> threshold\n", thr); 1453 #endif 1454 fdconf(fdc); 1455 } 1456 fdc->sc_overruns = 0; 1457 } 1458 } 1459 fd->sc_blkno += fd->sc_nblks; 1460 fd->sc_skip += fd->sc_nbytes; 1461 fd->sc_bcount -= fd->sc_nbytes; 1462 if (!finfo && fd->sc_bcount > 0) { 1463 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1464 goto doseek; 1465 } 1466 fdfinish(fd, bp); 1467 goto loop; 1468 1469 case DORESET: 1470 doreset: 1471 /* try a reset, keep motor on */ 1472 fd_set_motor(fdc); 1473 delay(100); 1474 fdc_reset(fdc); 1475 fdc->sc_nstat = 0; 1476 fdc->sc_istate = ISTATE_SENSEI; 1477 fdc->sc_state = RESETCOMPLETE; 1478 timeout(fdctimeout, fdc, hz / 2); 1479 return (1); /* will return later */ 1480 1481 case RESETCOMPLETE: 1482 untimeout(fdctimeout, fdc); 1483 fdconf(fdc); 1484 1485 /* fall through */ 1486 case DORECAL: 1487 fdc->sc_state = RECALWAIT; 1488 fdc->sc_istate = ISTATE_SENSEI; 1489 fdc->sc_nstat = 0; 1490 /* recalibrate function */ 1491 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1492 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1493 timeout(fdctimeout, fdc, 5 * hz); 1494 return (1); /* will return later */ 1495 1496 case RECALWAIT: 1497 untimeout(fdctimeout, fdc); 1498 fdc->sc_state = RECALCOMPLETE; 1499 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1500 /* allow 1/30 second for heads to settle */ 1501 timeout(fdcpseudointr, fdc, hz / 30); 1502 return (1); /* will return later */ 1503 } 1504 1505 case RECALCOMPLETE: 1506 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1507 #ifdef FD_DEBUG 1508 if (fdc_debug) 1509 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1510 #endif 1511 fdcretry(fdc); 1512 goto loop; 1513 } 1514 fd->sc_cylin = 0; 1515 goto doseek; 1516 1517 case MOTORWAIT: 1518 if (fd->sc_flags & FD_MOTOR_WAIT) 1519 return (1); /* time's not up yet */ 1520 goto doseek; 1521 1522 default: 1523 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1524 return (1); 1525 } 1526 #ifdef DIAGNOSTIC 1527 panic("fdcintr: impossible"); 1528 #endif 1529 #undef st0 1530 #undef st1 1531 #undef cyl 1532 } 1533 1534 void 1535 fdcretry(fdc) 1536 struct fdc_softc *fdc; 1537 { 1538 char bits[64]; 1539 struct fd_softc *fd; 1540 struct buf *bp; 1541 1542 fd = fdc->sc_drives.tqh_first; 1543 bp = fd->sc_q.b_actf; 1544 1545 fdc->sc_overruns = 0; 1546 if (fd->sc_opts & FDOPT_NORETRY) 1547 goto fail; 1548 1549 switch (fdc->sc_errors) { 1550 case 0: 1551 /* try again */ 1552 fdc->sc_state = 1553 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1554 break; 1555 1556 case 1: case 2: case 3: 1557 /* didn't work; try recalibrating */ 1558 fdc->sc_state = DORECAL; 1559 break; 1560 1561 case 4: 1562 /* still no go; reset the bastard */ 1563 fdc->sc_state = DORESET; 1564 break; 1565 1566 default: 1567 fail: 1568 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1569 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1570 fd->sc_skip / FDC_BSIZE, 1571 (struct disklabel *)NULL); 1572 1573 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1574 NE7_ST0BITS, bits, sizeof(bits))); 1575 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1576 NE7_ST1BITS, bits, sizeof(bits))); 1577 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1578 NE7_ST2BITS, bits, sizeof(bits))); 1579 printf(" cyl %d head %d sec %d)\n", 1580 fdc->sc_status[3], fdc->sc_status[4], 1581 fdc->sc_status[5]); 1582 } 1583 1584 bp->b_flags |= B_ERROR; 1585 bp->b_error = EIO; 1586 fdfinish(fd, bp); 1587 } 1588 fdc->sc_errors++; 1589 } 1590 1591 int 1592 fdsize(dev) 1593 dev_t dev; 1594 { 1595 1596 /* Swapping to floppies would not make sense. */ 1597 return (-1); 1598 } 1599 1600 int 1601 fddump(dev, blkno, va, size) 1602 dev_t dev; 1603 daddr_t blkno; 1604 caddr_t va; 1605 size_t size; 1606 { 1607 1608 /* Not implemented. */ 1609 return (EINVAL); 1610 } 1611 1612 int 1613 fdioctl(dev, cmd, addr, flag, p) 1614 dev_t dev; 1615 u_long cmd; 1616 caddr_t addr; 1617 int flag; 1618 struct proc *p; 1619 { 1620 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1621 struct fdformat_parms *form_parms; 1622 struct fdformat_cmd *form_cmd; 1623 struct ne7_fd_formb fd_formb; 1624 int il[FD_MAX_NSEC + 1]; 1625 int i, j; 1626 int error; 1627 1628 switch (cmd) { 1629 case DIOCGDINFO: 1630 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1631 return 0; 1632 1633 case DIOCWLABEL: 1634 if ((flag & FWRITE) == 0) 1635 return EBADF; 1636 /* XXX do something */ 1637 return (0); 1638 1639 case DIOCWDINFO: 1640 if ((flag & FWRITE) == 0) 1641 return (EBADF); 1642 1643 error = setdisklabel(fd->sc_dk.dk_label, 1644 (struct disklabel *)addr, 0, 1645 fd->sc_dk.dk_cpulabel); 1646 if (error) 1647 return (error); 1648 1649 error = writedisklabel(dev, fdstrategy, 1650 fd->sc_dk.dk_label, 1651 fd->sc_dk.dk_cpulabel); 1652 return (error); 1653 1654 case DIOCLOCK: 1655 /* 1656 * Nothing to do here, really. 1657 */ 1658 return (0); 1659 1660 case DIOCEJECT: 1661 fd_do_eject(); 1662 return (0); 1663 1664 case FDIOCGETFORMAT: 1665 form_parms = (struct fdformat_parms *)addr; 1666 form_parms->fdformat_version = FDFORMAT_VERSION; 1667 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1668 form_parms->ncyl = fd->sc_type->tracks; 1669 form_parms->nspt = fd->sc_type->sectrac; 1670 form_parms->ntrk = fd->sc_type->heads; 1671 form_parms->stepspercyl = fd->sc_type->step; 1672 form_parms->gaplen = fd->sc_type->gap2; 1673 form_parms->fillbyte = fd->sc_type->fillbyte; 1674 form_parms->interleave = fd->sc_type->interleave; 1675 switch (fd->sc_type->rate) { 1676 case FDC_500KBPS: 1677 form_parms->xfer_rate = 500 * 1024; 1678 break; 1679 case FDC_300KBPS: 1680 form_parms->xfer_rate = 300 * 1024; 1681 break; 1682 case FDC_250KBPS: 1683 form_parms->xfer_rate = 250 * 1024; 1684 break; 1685 default: 1686 return (EINVAL); 1687 } 1688 return (0); 1689 1690 case FDIOCSETFORMAT: 1691 if ((flag & FWRITE) == 0) 1692 return (EBADF); /* must be opened for writing */ 1693 1694 form_parms = (struct fdformat_parms *)addr; 1695 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1696 return (EINVAL);/* wrong version of formatting prog */ 1697 1698 i = form_parms->nbps >> 7; 1699 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1700 i & ~(1 << (ffs(i)-1))) 1701 /* not a power-of-two multiple of 128 */ 1702 return (EINVAL); 1703 1704 switch (form_parms->xfer_rate) { 1705 case 500 * 1024: 1706 fd->sc_type->rate = FDC_500KBPS; 1707 break; 1708 case 300 * 1024: 1709 fd->sc_type->rate = FDC_300KBPS; 1710 break; 1711 case 250 * 1024: 1712 fd->sc_type->rate = FDC_250KBPS; 1713 break; 1714 default: 1715 return (EINVAL); 1716 } 1717 1718 if (form_parms->nspt > FD_MAX_NSEC || 1719 form_parms->fillbyte > 0xff || 1720 form_parms->interleave > 0xff) 1721 return EINVAL; 1722 fd->sc_type->sectrac = form_parms->nspt; 1723 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1724 return EINVAL; 1725 fd->sc_type->heads = form_parms->ntrk; 1726 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1727 fd->sc_type->secsize = ffs(i)-1; 1728 fd->sc_type->gap2 = form_parms->gaplen; 1729 fd->sc_type->tracks = form_parms->ncyl; 1730 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1731 form_parms->nbps / DEV_BSIZE; 1732 fd->sc_type->step = form_parms->stepspercyl; 1733 fd->sc_type->fillbyte = form_parms->fillbyte; 1734 fd->sc_type->interleave = form_parms->interleave; 1735 return 0; 1736 1737 case FDIOCFORMAT_TRACK: 1738 if((flag & FWRITE) == 0) 1739 /* must be opened for writing */ 1740 return (EBADF); 1741 form_cmd = (struct fdformat_cmd *)addr; 1742 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1743 /* wrong version of formatting prog */ 1744 return (EINVAL); 1745 1746 if (form_cmd->head >= fd->sc_type->heads || 1747 form_cmd->cylinder >= fd->sc_type->tracks) { 1748 return (EINVAL); 1749 } 1750 1751 fd_formb.head = form_cmd->head; 1752 fd_formb.cyl = form_cmd->cylinder; 1753 fd_formb.transfer_rate = fd->sc_type->rate; 1754 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1755 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1756 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1757 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1758 1759 bzero(il,sizeof il); 1760 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1761 while (il[(j%fd_formb.fd_formb_nsecs)+1]) 1762 j++; 1763 il[(j%fd_formb.fd_formb_nsecs)+1] = i; 1764 j += fd->sc_type->interleave; 1765 } 1766 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1767 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1768 fd_formb.fd_formb_headno(i) = form_cmd->head; 1769 fd_formb.fd_formb_secno(i) = il[i+1]; 1770 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1771 } 1772 1773 return fdformat(dev, &fd_formb, p); 1774 1775 case FDIOCGETOPTS: /* get drive options */ 1776 *(int *)addr = fd->sc_opts; 1777 return (0); 1778 1779 case FDIOCSETOPTS: /* set drive options */ 1780 fd->sc_opts = *(int *)addr; 1781 return (0); 1782 1783 #ifdef DEBUG 1784 case _IO('f', 100): 1785 { 1786 int i; 1787 struct fdc_softc *fdc = (struct fdc_softc *) 1788 fd->sc_dv.dv_parent; 1789 1790 out_fdc(fdc, NE7CMD_DUMPREG); 1791 fdcresult(fdc); 1792 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1793 for (i = 0; i < fdc->sc_nstat; i++) 1794 printf(" %x", fdc->sc_status[i]); 1795 printf(">\n"); 1796 } 1797 1798 return (0); 1799 case _IOW('f', 101, int): 1800 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1801 ~CFG_THRHLD_MASK; 1802 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1803 (*(int *)addr & CFG_THRHLD_MASK); 1804 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1805 return (0); 1806 case _IO('f', 102): 1807 { 1808 int i; 1809 struct fdc_softc *fdc = (struct fdc_softc *) 1810 fd->sc_dv.dv_parent; 1811 out_fdc(fdc, NE7CMD_SENSEI); 1812 fdcresult(fdc); 1813 printf("sensei(%d regs): <", fdc->sc_nstat); 1814 for (i=0; i< fdc->sc_nstat; i++) 1815 printf(" 0x%x", fdc->sc_status[i]); 1816 } 1817 printf(">\n"); 1818 return (0); 1819 #endif 1820 default: 1821 return (ENOTTY); 1822 } 1823 1824 #ifdef DIAGNOSTIC 1825 panic("fdioctl: impossible"); 1826 #endif 1827 } 1828 1829 int 1830 fdformat(dev, finfo, p) 1831 dev_t dev; 1832 struct ne7_fd_formb *finfo; 1833 struct proc *p; 1834 { 1835 int rv = 0, s; 1836 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1837 struct fd_type *type = fd->sc_type; 1838 struct buf *bp; 1839 1840 /* set up a buffer header for fdstrategy() */ 1841 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1842 if (bp == 0) 1843 return (ENOBUFS); 1844 1845 PHOLD(p); 1846 bzero((void *)bp, sizeof(struct buf)); 1847 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1848 bp->b_proc = p; 1849 bp->b_dev = dev; 1850 1851 /* 1852 * calculate a fake blkno, so fdstrategy() would initiate a 1853 * seek to the requested cylinder 1854 */ 1855 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1856 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1857 1858 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1859 bp->b_data = (caddr_t)finfo; 1860 1861 #ifdef FD_DEBUG 1862 if (fdc_debug) 1863 printf("fdformat: blkno %x count %lx\n", 1864 bp->b_blkno, bp->b_bcount); 1865 #endif 1866 1867 /* now do the format */ 1868 fdstrategy(bp); 1869 1870 /* ...and wait for it to complete */ 1871 s = splbio(); 1872 while (!(bp->b_flags & B_DONE)) { 1873 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1874 if (rv == EWOULDBLOCK) 1875 break; 1876 } 1877 splx(s); 1878 1879 if (rv == EWOULDBLOCK) { 1880 /* timed out */ 1881 rv = EIO; 1882 biodone(bp); 1883 } 1884 if (bp->b_flags & B_ERROR) { 1885 rv = bp->b_error; 1886 } 1887 PRELE(p); 1888 free(bp, M_TEMP); 1889 return (rv); 1890 } 1891 1892 void 1893 fdgetdisklabel(dev) 1894 dev_t dev; 1895 { 1896 int unit = FDUNIT(dev), i; 1897 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1898 struct disklabel *lp = fd->sc_dk.dk_label; 1899 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1900 1901 bzero(lp, sizeof(struct disklabel)); 1902 bzero(lp, sizeof(struct cpu_disklabel)); 1903 1904 lp->d_type = DTYPE_FLOPPY; 1905 lp->d_secsize = FDC_BSIZE; 1906 lp->d_secpercyl = fd->sc_type->seccyl; 1907 lp->d_nsectors = fd->sc_type->sectrac; 1908 lp->d_ncylinders = fd->sc_type->tracks; 1909 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1910 lp->d_rpm = 3600; /* XXX like it matters... */ 1911 1912 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1913 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1914 lp->d_interleave = 1; 1915 1916 lp->d_partitions[RAW_PART].p_offset = 0; 1917 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1918 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1919 lp->d_npartitions = RAW_PART + 1; 1920 1921 lp->d_magic = DISKMAGIC; 1922 lp->d_magic2 = DISKMAGIC; 1923 lp->d_checksum = dkcksum(lp); 1924 1925 /* 1926 * Call the generic disklabel extraction routine. If there's 1927 * not a label there, fake it. 1928 */ 1929 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1930 strncpy(lp->d_packname, "default label", 1931 sizeof(lp->d_packname)); 1932 /* 1933 * Reset the partition info; it might have gotten 1934 * trashed in readdisklabel(). 1935 * 1936 * XXX Why do we have to do this? readdisklabel() 1937 * should be safe... 1938 */ 1939 for (i = 0; i < MAXPARTITIONS; ++i) { 1940 lp->d_partitions[i].p_offset = 0; 1941 if (i == RAW_PART) { 1942 lp->d_partitions[i].p_size = 1943 lp->d_secpercyl * lp->d_ncylinders; 1944 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1945 } else { 1946 lp->d_partitions[i].p_size = 0; 1947 lp->d_partitions[i].p_fstype = FS_UNUSED; 1948 } 1949 } 1950 lp->d_npartitions = RAW_PART + 1; 1951 } 1952 } 1953 1954 void 1955 fd_do_eject() 1956 { 1957 1958 auxregbisc(AUXIO_FDS, AUXIO_FEJ); 1959 delay(10); 1960 auxregbisc(AUXIO_FEJ, AUXIO_FDS); 1961 } 1962 1963 #ifdef MEMORY_DISK_HOOKS 1964 int fd_read_md_image __P((size_t *, caddr_t *)); 1965 #endif 1966 1967 /* ARGSUSED */ 1968 void 1969 fd_mountroot_hook(dev) 1970 struct device *dev; 1971 { 1972 int c; 1973 1974 fd_do_eject(); 1975 printf("Insert filesystem floppy and press return."); 1976 for (;;) { 1977 c = cngetc(); 1978 if ((c == '\r') || (c == '\n')) { 1979 printf("\n"); 1980 break; 1981 } 1982 } 1983 #ifdef MEMORY_DISK_HOOKS 1984 { 1985 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1986 md_read_image = fd_read_md_image; 1987 } 1988 #endif 1989 } 1990 1991 #ifdef MEMORY_DISK_HOOKS 1992 1993 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 1994 1995 int 1996 fd_read_md_image(sizep, addrp) 1997 size_t *sizep; 1998 caddr_t *addrp; 1999 { 2000 struct buf buf, *bp = &buf; 2001 dev_t dev; 2002 off_t offset; 2003 caddr_t addr; 2004 2005 dev = makedev(54,0); /* XXX */ 2006 2007 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2008 *addrp = addr; 2009 2010 if (fdopen(dev, 0, S_IFCHR, NULL)) 2011 panic("fd: mountroot: fdopen"); 2012 2013 offset = 0; 2014 2015 for (;;) { 2016 bp->b_dev = dev; 2017 bp->b_error = 0; 2018 bp->b_resid = 0; 2019 bp->b_proc = NULL; 2020 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2021 bp->b_blkno = btodb(offset); 2022 bp->b_bcount = DEV_BSIZE; 2023 bp->b_data = addr; 2024 fdstrategy(bp); 2025 while ((bp->b_flags & B_DONE) == 0) { 2026 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2027 } 2028 if (bp->b_error) 2029 panic("fd: mountroot: fdread error %d", bp->b_error); 2030 2031 if (bp->b_resid != 0) 2032 break; 2033 2034 addr += DEV_BSIZE; 2035 offset += DEV_BSIZE; 2036 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2037 break; 2038 } 2039 (void)fdclose(dev, 0, S_IFCHR, NULL); 2040 *sizep = offset; 2041 fd_do_eject(); 2042 return (0); 2043 } 2044 #endif 2045
Indexes created Fri Oct 03 02:09:57 GMT 2025