fd.c revision 1.53
1 /* $NetBSD: fd.c,v 1.53 1997/10/19 22:29:21 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles Hannum. 5 * Copyright (c) 1995 Paul Kranenburg. 6 * Copyright (c) 1990 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Don Ahn. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)fd.c 7.4 (Berkeley) 5/25/91 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/file.h> 47 #include <sys/ioctl.h> 48 #include <sys/device.h> 49 #include <sys/disklabel.h> 50 #include <sys/dkstat.h> 51 #include <sys/disk.h> 52 #include <sys/fdio.h> 53 #include <sys/buf.h> 54 #include <sys/malloc.h> 55 #include <sys/proc.h> 56 #include <sys/uio.h> 57 #include <sys/stat.h> 58 #include <sys/syslog.h> 59 #include <sys/queue.h> 60 #include <sys/conf.h> 61 62 #include <dev/cons.h> 63 64 #include <machine/cpu.h> 65 #include <machine/autoconf.h> 66 #include <machine/conf.h> 67 68 #include <sparc/sparc/auxreg.h> 69 #include <sparc/dev/fdreg.h> 70 #include <sparc/dev/fdvar.h> 71 72 #define FDUNIT(dev) (minor(dev) / 8) 73 #define FDTYPE(dev) (minor(dev) % 8) 74 75 /* XXX misuse a flag to identify format operation */ 76 #define B_FORMAT B_XXX 77 #define b_cylin b_resid 78 79 #define FD_DEBUG 80 #ifdef FD_DEBUG 81 int fdc_debug = 0; 82 #endif 83 84 enum fdc_state { 85 DEVIDLE = 0, 86 MOTORWAIT, 87 DOSEEK, 88 SEEKWAIT, 89 SEEKTIMEDOUT, 90 SEEKCOMPLETE, 91 DOIO, 92 IOCOMPLETE, 93 IOTIMEDOUT, 94 DORESET, 95 RESETCOMPLETE, 96 RESETTIMEDOUT, 97 DORECAL, 98 RECALWAIT, 99 RECALTIMEDOUT, 100 RECALCOMPLETE, 101 }; 102 103 /* software state, per controller */ 104 struct fdc_softc { 105 struct device sc_dev; /* boilerplate */ 106 struct intrhand sc_sih; 107 struct intrhand sc_hih; 108 caddr_t sc_reg; 109 struct fd_softc *sc_fd[4]; /* pointers to children */ 110 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 111 enum fdc_state sc_state; 112 int sc_flags; 113 #define FDC_82077 0x01 114 #define FDC_NEEDHEADSETTLE 0x02 115 #define FDC_EIS 0x04 116 int sc_errors; /* number of retries so far */ 117 int sc_overruns; /* number of DMA overruns */ 118 int sc_cfg; /* current configuration */ 119 struct fdcio sc_io; 120 #define sc_reg_msr sc_io.fdcio_reg_msr 121 #define sc_reg_fifo sc_io.fdcio_reg_fifo 122 #define sc_reg_dor sc_io.fdcio_reg_dor 123 #define sc_reg_drs sc_io.fdcio_reg_msr 124 #define sc_istate sc_io.fdcio_istate 125 #define sc_data sc_io.fdcio_data 126 #define sc_tc sc_io.fdcio_tc 127 #define sc_nstat sc_io.fdcio_nstat 128 #define sc_status sc_io.fdcio_status 129 #define sc_intrcnt sc_io.fdcio_intrcnt 130 }; 131 132 #ifndef FDC_C_HANDLER 133 extern struct fdcio *fdciop; 134 #endif 135 136 /* controller driver configuration */ 137 int fdcmatch __P((struct device *, struct cfdata *, void *)); 138 void fdcattach __P((struct device *, struct device *, void *)); 139 140 struct cfattach fdc_ca = { 141 sizeof(struct fdc_softc), fdcmatch, fdcattach 142 }; 143 144 struct cfdriver fdc_cd = { 145 NULL, "fdc", DV_DULL 146 }; 147 148 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 149 150 /* 151 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 152 * we tell them apart. 153 */ 154 struct fd_type { 155 int sectrac; /* sectors per track */ 156 int heads; /* number of heads */ 157 int seccyl; /* sectors per cylinder */ 158 int secsize; /* size code for sectors */ 159 int datalen; /* data len when secsize = 0 */ 160 int steprate; /* step rate and head unload time */ 161 int gap1; /* gap len between sectors */ 162 int gap2; /* formatting gap */ 163 int cylinders; /* total num of cylinders */ 164 int size; /* size of disk in sectors */ 165 int step; /* steps per cylinder */ 166 int rate; /* transfer speed code */ 167 int fillbyte; /* format fill byte */ 168 int interleave; /* interleave factor (formatting) */ 169 char *name; 170 }; 171 172 /* The order of entries in the following table is important -- BEWARE! */ 173 struct fd_type fd_types[] = { 174 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 175 { 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 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 182 }; 183 184 /* software state, per disk (with up to 4 disks per ctlr) */ 185 struct fd_softc { 186 struct device sc_dv; /* generic device info */ 187 struct disk sc_dk; /* generic disk info */ 188 189 struct fd_type *sc_deftype; /* default type descriptor */ 190 struct fd_type *sc_type; /* current type descriptor */ 191 192 daddr_t sc_blkno; /* starting block number */ 193 int sc_bcount; /* byte count left */ 194 int sc_skip; /* bytes already transferred */ 195 int sc_nblks; /* number of blocks currently tranferring */ 196 int sc_nbytes; /* number of bytes currently tranferring */ 197 198 int sc_drive; /* physical unit number */ 199 int sc_flags; 200 #define FD_OPEN 0x01 /* it's open */ 201 #define FD_MOTOR 0x02 /* motor should be on */ 202 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 203 int sc_cylin; /* where we think the head is */ 204 int sc_opts; /* user-set options */ 205 206 void *sc_sdhook; /* shutdownhook cookie */ 207 208 TAILQ_ENTRY(fd_softc) sc_drivechain; 209 int sc_ops; /* I/O ops since last switch */ 210 struct buf sc_q; /* head of buf chain */ 211 }; 212 213 /* floppy driver configuration */ 214 int fdmatch __P((struct device *, struct cfdata *, void *)); 215 void fdattach __P((struct device *, struct device *, void *)); 216 217 struct cfattach fd_ca = { 218 sizeof(struct fd_softc), fdmatch, fdattach 219 }; 220 221 struct cfdriver fd_cd = { 222 NULL, "fd", DV_DISK 223 }; 224 225 void fdgetdisklabel __P((dev_t)); 226 int fd_get_parms __P((struct fd_softc *)); 227 void fdstrategy __P((struct buf *)); 228 void fdstart __P((struct fd_softc *)); 229 int fdprint __P((void *, const char *)); 230 231 struct dkdriver fddkdriver = { fdstrategy }; 232 233 struct fd_type *fd_nvtotype __P((char *, int, int)); 234 void fd_set_motor __P((struct fdc_softc *fdc)); 235 void fd_motor_off __P((void *arg)); 236 void fd_motor_on __P((void *arg)); 237 int fdcresult __P((struct fdc_softc *fdc)); 238 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 239 void fdcstart __P((struct fdc_softc *fdc)); 240 void fdcstatus __P((struct device *dv, int n, char *s)); 241 void fdc_reset __P((struct fdc_softc *fdc)); 242 void fdctimeout __P((void *arg)); 243 void fdcpseudointr __P((void *arg)); 244 #ifdef FDC_C_HANDLER 245 int fdchwintr __P((struct fdc_softc *)); 246 #else 247 void fdchwintr __P((void)); 248 #endif 249 int fdcswintr __P((struct fdc_softc *)); 250 int fdcstate __P((struct fdc_softc *)); 251 void fdcretry __P((struct fdc_softc *fdc)); 252 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 253 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 254 void fd_do_eject __P((struct fd_softc *)); 255 void fd_mountroot_hook __P((struct device *)); 256 static void fdconf __P((struct fdc_softc *)); 257 258 #if PIL_FDSOFT == 4 259 #define IE_FDSOFT IE_L4 260 #else 261 #error 4 262 #endif 263 264 #ifdef FDC_C_HANDLER 265 #if defined(SUN4M) 266 #define FD_SET_SWINTR do { \ 267 if (CPU_ISSUN4M) \ 268 raise(0, PIL_FDSOFT); \ 269 else \ 270 ienab_bis(IE_L4); \ 271 } while(0) 272 #else 273 #define AUDIO_SET_SWINTR ienab_bis(IE_FDSOFT) 274 #endif /* defined(SUN4M) */ 275 #endif /* FDC_C_HANDLER */ 276 277 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 278 279 int 280 fdcmatch(parent, match, aux) 281 struct device *parent; 282 struct cfdata *match; 283 void *aux; 284 { 285 register struct confargs *ca = aux; 286 register struct romaux *ra = &ca->ca_ra; 287 288 /* 289 * Floppy doesn't exist on sun4. 290 */ 291 if (CPU_ISSUN4) 292 return (0); 293 294 /* 295 * Floppy controller is on mainbus on sun4c. 296 */ 297 if ((CPU_ISSUN4C) && (ca->ca_bustype != BUS_MAIN)) 298 return (0); 299 300 /* 301 * Floppy controller is on obio on sun4m. 302 */ 303 if ((CPU_ISSUN4M) && (ca->ca_bustype != BUS_OBIO)) 304 return (0); 305 306 /* Sun PROMs call the controller an "fd" or "SUNW,fdtwo" */ 307 if (strcmp(OBP_FDNAME, ra->ra_name)) 308 return (0); 309 310 if (ca->ca_ra.ra_vaddr && 311 probeget(ca->ca_ra.ra_vaddr, 1) == -1) { 312 return (0); 313 } 314 315 return (1); 316 } 317 318 /* 319 * Arguments passed between fdcattach and fdprobe. 320 */ 321 struct fdc_attach_args { 322 int fa_drive; 323 struct bootpath *fa_bootpath; 324 struct fd_type *fa_deftype; 325 }; 326 327 /* 328 * Print the location of a disk drive (called just before attaching the 329 * the drive). If `fdc' is not NULL, the drive was found but was not 330 * in the system config file; print the drive name as well. 331 * Return QUIET (config_find ignores this if the device was configured) to 332 * avoid printing `fdN not configured' messages. 333 */ 334 int 335 fdprint(aux, fdc) 336 void *aux; 337 const char *fdc; 338 { 339 register struct fdc_attach_args *fa = aux; 340 341 if (!fdc) 342 printf(" drive %d", fa->fa_drive); 343 return (QUIET); 344 } 345 346 static void 347 fdconf(fdc) 348 struct fdc_softc *fdc; 349 { 350 int vroom; 351 352 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 353 return; 354 355 /* 356 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 357 * the PROM thinks is appropriate. 358 */ 359 if ((vroom = fdc->sc_status[7]) == 0) 360 vroom = 0x64; 361 362 /* Configure controller to use FIFO and Implied Seek */ 363 out_fdc(fdc, NE7CMD_CFG); 364 out_fdc(fdc, vroom); 365 out_fdc(fdc, fdc->sc_cfg); 366 out_fdc(fdc, 0); /* PRETRK */ 367 /* No result phase */ 368 } 369 370 void 371 fdcattach(parent, self, aux) 372 struct device *parent, *self; 373 void *aux; 374 { 375 register struct confargs *ca = aux; 376 struct fdc_softc *fdc = (void *)self; 377 struct fdc_attach_args fa; 378 struct bootpath *bp; 379 int pri; 380 char code; 381 382 if (ca->ca_ra.ra_vaddr) 383 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 384 else 385 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_reg, 0, 386 ca->ca_ra.ra_len); 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 on more than one drive */ 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(AUXIO4C_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(" 0x%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 /* deselect drive and turn motor off */ 569 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 570 } else { 571 auxregbisc(0, AUXIO4C_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->cylinders, 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 out_fdc(fdc, NE7CMD_SPECIFY); 605 out_fdc(fdc, type->steprate); 606 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 607 608 /* 609 * Initialize and attach the disk structure. 610 */ 611 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 612 fd->sc_dk.dk_driver = &fddkdriver; 613 disk_attach(&fd->sc_dk); 614 615 /* 616 * We're told if we're the boot device in fdcattach(). 617 */ 618 if (fa->fa_bootpath) 619 fa->fa_bootpath->dev = &fd->sc_dv; 620 621 /* 622 * Establish a mountroot_hook anyway in case we booted 623 * with RB_ASKNAME and get selected as the boot device. 624 */ 625 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 626 627 /* Make sure the drive motor gets turned off at shutdown time. */ 628 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 629 630 /* XXX Need to do some more fiddling with sc_dk. */ 631 dk_establish(&fd->sc_dk, &fd->sc_dv); 632 } 633 634 __inline struct fd_type * 635 fd_dev_to_type(fd, dev) 636 struct fd_softc *fd; 637 dev_t dev; 638 { 639 int type = FDTYPE(dev); 640 641 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 642 return (NULL); 643 return (type ? &fd_types[type - 1] : fd->sc_deftype); 644 } 645 646 void 647 fdstrategy(bp) 648 register struct buf *bp; /* IO operation to perform */ 649 { 650 struct fd_softc *fd; 651 int unit = FDUNIT(bp->b_dev); 652 int sz; 653 int s; 654 655 /* Valid unit, controller, and request? */ 656 if (unit >= fd_cd.cd_ndevs || 657 (fd = fd_cd.cd_devs[unit]) == 0 || 658 bp->b_blkno < 0 || 659 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 660 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 661 (bp->b_flags & B_FORMAT) == 0)) { 662 bp->b_error = EINVAL; 663 goto bad; 664 } 665 666 /* If it's a null transfer, return immediately. */ 667 if (bp->b_bcount == 0) 668 goto done; 669 670 sz = howmany(bp->b_bcount, DEV_BSIZE); 671 672 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 673 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 674 - bp->b_blkno; 675 if (sz == 0) { 676 /* If exactly at end of disk, return EOF. */ 677 bp->b_resid = bp->b_bcount; 678 goto done; 679 } 680 if (sz < 0) { 681 /* If past end of disk, return EINVAL. */ 682 bp->b_error = EINVAL; 683 goto bad; 684 } 685 /* Otherwise, truncate request. */ 686 bp->b_bcount = sz << DEV_BSHIFT; 687 } 688 689 bp->b_cylin = (bp->b_blkno * DEV_BSIZE) / 690 (FD_BSIZE(fd) * fd->sc_type->seccyl); 691 692 #ifdef FD_DEBUG 693 if (fdc_debug > 1) 694 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 695 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 696 #endif 697 698 /* Queue transfer on drive, activate drive and controller if idle. */ 699 s = splbio(); 700 disksort(&fd->sc_q, bp); 701 untimeout(fd_motor_off, fd); /* a good idea */ 702 if (!fd->sc_q.b_active) 703 fdstart(fd); 704 #ifdef DIAGNOSTIC 705 else { 706 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 707 if (fdc->sc_state == DEVIDLE) { 708 printf("fdstrategy: controller inactive\n"); 709 fdcstart(fdc); 710 } 711 } 712 #endif 713 splx(s); 714 return; 715 716 bad: 717 bp->b_flags |= B_ERROR; 718 done: 719 /* Toss transfer; we're done early. */ 720 biodone(bp); 721 } 722 723 void 724 fdstart(fd) 725 struct fd_softc *fd; 726 { 727 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 728 int active = fdc->sc_drives.tqh_first != 0; 729 730 /* Link into controller queue. */ 731 fd->sc_q.b_active = 1; 732 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 733 734 /* If controller not already active, start it. */ 735 if (!active) 736 fdcstart(fdc); 737 } 738 739 void 740 fdfinish(fd, bp) 741 struct fd_softc *fd; 742 struct buf *bp; 743 { 744 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 745 746 /* 747 * Move this drive to the end of the queue to give others a `fair' 748 * chance. We only force a switch if N operations are completed while 749 * another drive is waiting to be serviced, since there is a long motor 750 * startup delay whenever we switch. 751 */ 752 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 753 fd->sc_ops = 0; 754 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 755 if (bp->b_actf) { 756 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 757 } else 758 fd->sc_q.b_active = 0; 759 } 760 bp->b_resid = fd->sc_bcount; 761 fd->sc_skip = 0; 762 fd->sc_q.b_actf = bp->b_actf; 763 764 biodone(bp); 765 /* turn off motor 5s from now */ 766 timeout(fd_motor_off, fd, 5 * hz); 767 fdc->sc_state = DEVIDLE; 768 } 769 770 void 771 fdc_reset(fdc) 772 struct fdc_softc *fdc; 773 { 774 if (fdc->sc_flags & FDC_82077) { 775 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 776 } 777 778 *fdc->sc_reg_drs = DRS_RESET; 779 delay(10); 780 *fdc->sc_reg_drs = 0; 781 782 if (fdc->sc_flags & FDC_82077) { 783 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 784 } 785 #ifdef FD_DEBUG 786 if (fdc_debug) 787 printf("fdc reset\n"); 788 #endif 789 } 790 791 void 792 fd_set_motor(fdc) 793 struct fdc_softc *fdc; 794 { 795 struct fd_softc *fd; 796 u_char status; 797 int n; 798 799 if (fdc->sc_flags & FDC_82077) { 800 status = FDO_FRST | FDO_FDMAEN; 801 if ((fd = fdc->sc_drives.tqh_first) != NULL) 802 status |= fd->sc_drive; 803 804 for (n = 0; n < 4; n++) 805 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 806 status |= FDO_MOEN(n); 807 *fdc->sc_reg_dor = status; 808 } else { 809 int on = 0; 810 811 for (n = 0; n < 4; n++) 812 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 813 on = 1; 814 if (on) { 815 auxregbisc(AUXIO4C_FDS, 0); 816 } else { 817 auxregbisc(0, AUXIO4C_FDS); 818 } 819 } 820 } 821 822 void 823 fd_motor_off(arg) 824 void *arg; 825 { 826 struct fd_softc *fd = arg; 827 int s; 828 829 s = splbio(); 830 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 831 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 832 splx(s); 833 } 834 835 void 836 fd_motor_on(arg) 837 void *arg; 838 { 839 struct fd_softc *fd = arg; 840 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 841 int s; 842 843 s = splbio(); 844 fd->sc_flags &= ~FD_MOTOR_WAIT; 845 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 846 (void) fdcstate(fdc); 847 splx(s); 848 } 849 850 int 851 fdcresult(fdc) 852 struct fdc_softc *fdc; 853 { 854 u_char i; 855 int j = 100000, 856 n = 0; 857 858 for (; j; j--) { 859 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 860 if (i == NE7_RQM) 861 return (fdc->sc_nstat = n); 862 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 863 if (n >= sizeof(fdc->sc_status)) { 864 log(LOG_ERR, "fdcresult: overrun\n"); 865 return (-1); 866 } 867 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 868 } else 869 delay(10); 870 } 871 log(LOG_ERR, "fdcresult: timeout\n"); 872 return (fdc->sc_nstat = -1); 873 } 874 875 int 876 out_fdc(fdc, x) 877 struct fdc_softc *fdc; 878 u_char x; 879 { 880 int i = 100000; 881 882 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 883 delay(1); 884 if (i <= 0) 885 return (-1); 886 887 *fdc->sc_reg_fifo = x; 888 return (0); 889 } 890 891 int 892 fdopen(dev, flags, fmt, p) 893 dev_t dev; 894 int flags, fmt; 895 struct proc *p; 896 { 897 int unit, pmask; 898 struct fd_softc *fd; 899 struct fd_type *type; 900 901 unit = FDUNIT(dev); 902 if (unit >= fd_cd.cd_ndevs) 903 return (ENXIO); 904 fd = fd_cd.cd_devs[unit]; 905 if (fd == 0) 906 return (ENXIO); 907 type = fd_dev_to_type(fd, dev); 908 if (type == NULL) 909 return (ENXIO); 910 911 if ((fd->sc_flags & FD_OPEN) != 0 && 912 fd->sc_type != type) 913 return (EBUSY); 914 915 fd->sc_type = type; 916 fd->sc_cylin = -1; 917 fd->sc_flags |= FD_OPEN; 918 919 /* 920 * Only update the disklabel if we're not open anywhere else. 921 */ 922 if (fd->sc_dk.dk_openmask == 0) 923 fdgetdisklabel(dev); 924 925 pmask = (1 << DISKPART(dev)); 926 927 switch (fmt) { 928 case S_IFCHR: 929 fd->sc_dk.dk_copenmask |= pmask; 930 break; 931 932 case S_IFBLK: 933 fd->sc_dk.dk_bopenmask |= pmask; 934 break; 935 } 936 fd->sc_dk.dk_openmask = 937 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 938 939 return (0); 940 } 941 942 int 943 fdclose(dev, flags, fmt, p) 944 dev_t dev; 945 int flags, fmt; 946 struct proc *p; 947 { 948 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 949 int pmask = (1 << DISKPART(dev)); 950 951 fd->sc_flags &= ~FD_OPEN; 952 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 953 954 switch (fmt) { 955 case S_IFCHR: 956 fd->sc_dk.dk_copenmask &= ~pmask; 957 break; 958 959 case S_IFBLK: 960 fd->sc_dk.dk_bopenmask &= ~pmask; 961 break; 962 } 963 fd->sc_dk.dk_openmask = 964 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 965 966 return (0); 967 } 968 969 int 970 fdread(dev, uio, flag) 971 dev_t dev; 972 struct uio *uio; 973 int flag; 974 { 975 976 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 977 } 978 979 int 980 fdwrite(dev, uio, flag) 981 dev_t dev; 982 struct uio *uio; 983 int flag; 984 { 985 986 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 987 } 988 989 void 990 fdcstart(fdc) 991 struct fdc_softc *fdc; 992 { 993 994 #ifdef DIAGNOSTIC 995 /* only got here if controller's drive queue was inactive; should 996 be in idle state */ 997 if (fdc->sc_state != DEVIDLE) { 998 printf("fdcstart: not idle\n"); 999 return; 1000 } 1001 #endif 1002 (void) fdcstate(fdc); 1003 } 1004 1005 void 1006 fdcstatus(dv, n, s) 1007 struct device *dv; 1008 int n; 1009 char *s; 1010 { 1011 struct fdc_softc *fdc = (void *)dv->dv_parent; 1012 char bits[64]; 1013 #if 0 1014 /* 1015 * A 82072 seems to return <invalid command> on 1016 * gratuitous Sense Interrupt commands. 1017 */ 1018 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1019 out_fdc(fdc, NE7CMD_SENSEI); 1020 (void) fdcresult(fdc); 1021 n = 2; 1022 } 1023 #endif 1024 1025 /* Just print last status */ 1026 n = fdc->sc_nstat; 1027 1028 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1029 1030 switch (n) { 1031 case 0: 1032 printf("\n"); 1033 break; 1034 case 2: 1035 printf(" (st0 %s cyl %d)\n", 1036 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1037 bits, sizeof(bits)), fdc->sc_status[1]); 1038 break; 1039 case 7: 1040 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1041 NE7_ST0BITS, bits, sizeof(bits))); 1042 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1043 NE7_ST1BITS, bits, sizeof(bits))); 1044 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1045 NE7_ST2BITS, bits, sizeof(bits))); 1046 printf(" cyl %d head %d sec %d)\n", 1047 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1048 break; 1049 #ifdef DIAGNOSTIC 1050 default: 1051 printf(" fdcstatus: weird size: %d\n", n); 1052 break; 1053 #endif 1054 } 1055 } 1056 1057 void 1058 fdctimeout(arg) 1059 void *arg; 1060 { 1061 struct fdc_softc *fdc = arg; 1062 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1063 int s; 1064 1065 s = splbio(); 1066 fdcstatus(&fd->sc_dv, 0, "timeout"); 1067 1068 if (fd->sc_q.b_actf) 1069 fdc->sc_state++; 1070 else 1071 fdc->sc_state = DEVIDLE; 1072 1073 (void) fdcstate(fdc); 1074 splx(s); 1075 } 1076 1077 void 1078 fdcpseudointr(arg) 1079 void *arg; 1080 { 1081 struct fdc_softc *fdc = arg; 1082 int s; 1083 1084 /* Just ensure it has the right spl. */ 1085 s = splbio(); 1086 (void) fdcstate(fdc); 1087 splx(s); 1088 } 1089 1090 1091 #ifdef FDC_C_HANDLER 1092 /* 1093 * hardware interrupt entry point: must be converted to `fast' 1094 * (in-window) handler. 1095 */ 1096 int 1097 fdchwintr(fdc) 1098 struct fdc_softc *fdc; 1099 { 1100 1101 switch (fdc->sc_istate) { 1102 case ISTATE_IDLE: 1103 return (0); 1104 case ISTATE_SENSEI: 1105 out_fdc(fdc, NE7CMD_SENSEI); 1106 fdcresult(fdc); 1107 fdc->sc_istate = ISTATE_IDLE; 1108 FD_SET_SWINTR; 1109 return (1); 1110 case ISTATE_SPURIOUS: 1111 fdcresult(fdc); 1112 fdc->sc_istate = ISTATE_SPURIOUS; 1113 printf("fdc: stray hard interrupt... "); 1114 FD_SET_SWINTR; 1115 return (1); 1116 case ISTATE_DMA: 1117 break; 1118 default: 1119 printf("fdc: goofed ...\n"); 1120 return (1); 1121 } 1122 1123 for (;;) { 1124 register int msr; 1125 1126 msr = *fdc->sc_reg_msr; 1127 1128 if ((msr & NE7_RQM) == 0) 1129 break; 1130 1131 if ((msr & NE7_NDM) == 0) { 1132 fdcresult(fdc); 1133 fdc->sc_istate = ISTATE_IDLE; 1134 ienab_bis(IE_FDSOFT); 1135 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1136 break; 1137 } 1138 1139 if (msr & NE7_DIO) { 1140 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1141 } else { 1142 *fdc->sc_reg_fifo = *fdc->sc_data++; 1143 } 1144 if (--fdc->sc_tc == 0) { 1145 fdc->sc_istate = ISTATE_DONE; 1146 FTC_FLIP; 1147 fdcresult(fdc); 1148 FD_SET_SWINTR; 1149 break; 1150 } 1151 } 1152 return (1); 1153 } 1154 #endif 1155 1156 int 1157 fdcswintr(fdc) 1158 struct fdc_softc *fdc; 1159 { 1160 int s; 1161 1162 if (fdc->sc_istate != ISTATE_DONE) 1163 return (0); 1164 1165 fdc->sc_istate = ISTATE_IDLE; 1166 s = splbio(); 1167 fdcstate(fdc); 1168 splx(s); 1169 return (1); 1170 } 1171 1172 int 1173 fdcstate(fdc) 1174 struct fdc_softc *fdc; 1175 { 1176 #define st0 fdc->sc_status[0] 1177 #define st1 fdc->sc_status[1] 1178 #define cyl fdc->sc_status[1] 1179 #define OUT_FDC(fdc, c, s) \ 1180 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1181 1182 struct fd_softc *fd; 1183 struct buf *bp; 1184 int read, head, sec, nblks; 1185 struct fd_type *type; 1186 struct ne7_fd_formb *finfo = NULL; 1187 1188 1189 if (fdc->sc_istate != ISTATE_IDLE) { 1190 /* Trouble... */ 1191 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1192 fdc->sc_state, fdc->sc_istate); 1193 fdc->sc_istate = ISTATE_IDLE; 1194 if (fdc->sc_state == RESETCOMPLETE || 1195 fdc->sc_state == RESETTIMEDOUT) { 1196 panic("fdcintr: spurious interrupt can't be cleared"); 1197 } 1198 goto doreset; 1199 } 1200 1201 loop: 1202 /* Is there a drive for the controller to do a transfer with? */ 1203 fd = fdc->sc_drives.tqh_first; 1204 if (fd == NULL) { 1205 fdc->sc_state = DEVIDLE; 1206 return (0); 1207 } 1208 1209 /* Is there a transfer to this drive? If not, deactivate drive. */ 1210 bp = fd->sc_q.b_actf; 1211 if (bp == NULL) { 1212 fd->sc_ops = 0; 1213 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1214 fd->sc_q.b_active = 0; 1215 goto loop; 1216 } 1217 1218 if (bp->b_flags & B_FORMAT) 1219 finfo = (struct ne7_fd_formb *)bp->b_data; 1220 1221 switch (fdc->sc_state) { 1222 case DEVIDLE: 1223 fdc->sc_errors = 0; 1224 fd->sc_skip = 0; 1225 fd->sc_bcount = bp->b_bcount; 1226 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1227 untimeout(fd_motor_off, fd); 1228 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1229 fdc->sc_state = MOTORWAIT; 1230 return (1); 1231 } 1232 if ((fd->sc_flags & FD_MOTOR) == 0) { 1233 /* Turn on the motor, being careful about pairing. */ 1234 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1235 if (ofd && ofd->sc_flags & FD_MOTOR) { 1236 untimeout(fd_motor_off, ofd); 1237 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1238 } 1239 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1240 fd_set_motor(fdc); 1241 fdc->sc_state = MOTORWAIT; 1242 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1243 /* Allow .25s for motor to stabilize. */ 1244 timeout(fd_motor_on, fd, hz / 4); 1245 } else { 1246 fd->sc_flags &= ~FD_MOTOR_WAIT; 1247 goto loop; 1248 } 1249 return (1); 1250 } 1251 /* Make sure the right drive is selected. */ 1252 fd_set_motor(fdc); 1253 1254 /*FALLTHROUGH*/ 1255 case DOSEEK: 1256 doseek: 1257 if ((fdc->sc_flags & FDC_EIS) && 1258 (bp->b_flags & B_FORMAT) == 0) { 1259 fd->sc_cylin = bp->b_cylin; 1260 /* We use implied seek */ 1261 goto doio; 1262 } 1263 1264 if (fd->sc_cylin == bp->b_cylin) 1265 goto doio; 1266 1267 /* specify command */ 1268 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1269 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1270 /* XXX head load time == 6ms */ 1271 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 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 != NULL) 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 / FD_BSIZE(fd)); 1298 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1299 fd->sc_nblks = nblks; 1300 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 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 != NULL) { 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 /*FALLTHROUGH*/ 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 FTC_FLIP; 1385 (void)fdcresult(fdc); 1386 /*FALLTHROUGH*/ 1387 case SEEKTIMEDOUT: 1388 case RECALTIMEDOUT: 1389 case RESETTIMEDOUT: 1390 fdcretry(fdc); 1391 goto loop; 1392 1393 case IOCOMPLETE: /* IO DONE, post-analyze */ 1394 untimeout(fdctimeout, fdc); 1395 1396 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1397 1398 if (fdc->sc_nstat != 7 || st1 != 0 || 1399 ((st0 & 0xf8) != 0 && 1400 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1401 #ifdef FD_DEBUG 1402 if (fdc_debug) { 1403 fdcstatus(&fd->sc_dv, 7, 1404 bp->b_flags & B_READ 1405 ? "read failed" : "write failed"); 1406 printf("blkno %d nblks %d nstat %d tc %d\n", 1407 fd->sc_blkno, fd->sc_nblks, 1408 fdc->sc_nstat, 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 / FD_BSIZE(fd), 1441 (struct disklabel *)NULL); 1442 printf("\n"); 1443 fdc->sc_errors = 0; 1444 } else { 1445 if (--fdc->sc_overruns < -20) { 1446 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1447 if (thr > 0) { 1448 thr--; 1449 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1450 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1451 #ifdef FD_DEBUG 1452 if (fdc_debug) 1453 printf("fdc: %d -> threshold\n", thr); 1454 #endif 1455 fdconf(fdc); 1456 } 1457 fdc->sc_overruns = 0; 1458 } 1459 } 1460 fd->sc_blkno += fd->sc_nblks; 1461 fd->sc_skip += fd->sc_nbytes; 1462 fd->sc_bcount -= fd->sc_nbytes; 1463 if (finfo == NULL && fd->sc_bcount > 0) { 1464 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1465 goto doseek; 1466 } 1467 fdfinish(fd, bp); 1468 goto loop; 1469 1470 case DORESET: 1471 doreset: 1472 /* try a reset, keep motor on */ 1473 fd_set_motor(fdc); 1474 delay(100); 1475 fdc_reset(fdc); 1476 fdc->sc_nstat = 0; 1477 fdc->sc_istate = ISTATE_SENSEI; 1478 fdc->sc_state = RESETCOMPLETE; 1479 timeout(fdctimeout, fdc, hz / 2); 1480 return (1); /* will return later */ 1481 1482 case RESETCOMPLETE: 1483 untimeout(fdctimeout, fdc); 1484 fdconf(fdc); 1485 1486 /* fall through */ 1487 case DORECAL: 1488 fdc->sc_state = RECALWAIT; 1489 fdc->sc_istate = ISTATE_SENSEI; 1490 fdc->sc_nstat = 0; 1491 /* recalibrate function */ 1492 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1493 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1494 timeout(fdctimeout, fdc, 5 * hz); 1495 return (1); /* will return later */ 1496 1497 case RECALWAIT: 1498 untimeout(fdctimeout, fdc); 1499 fdc->sc_state = RECALCOMPLETE; 1500 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1501 /* allow 1/30 second for heads to settle */ 1502 timeout(fdcpseudointr, fdc, hz / 30); 1503 return (1); /* will return later */ 1504 } 1505 1506 case RECALCOMPLETE: 1507 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1508 #ifdef FD_DEBUG 1509 if (fdc_debug) 1510 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1511 #endif 1512 fdcretry(fdc); 1513 goto loop; 1514 } 1515 fd->sc_cylin = 0; 1516 goto doseek; 1517 1518 case MOTORWAIT: 1519 if (fd->sc_flags & FD_MOTOR_WAIT) 1520 return (1); /* time's not up yet */ 1521 goto doseek; 1522 1523 default: 1524 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1525 return (1); 1526 } 1527 #ifdef DIAGNOSTIC 1528 panic("fdcintr: impossible"); 1529 #endif 1530 #undef st0 1531 #undef st1 1532 #undef cyl 1533 } 1534 1535 void 1536 fdcretry(fdc) 1537 struct fdc_softc *fdc; 1538 { 1539 char bits[64]; 1540 struct fd_softc *fd; 1541 struct buf *bp; 1542 1543 fd = fdc->sc_drives.tqh_first; 1544 bp = fd->sc_q.b_actf; 1545 1546 fdc->sc_overruns = 0; 1547 if (fd->sc_opts & FDOPT_NORETRY) 1548 goto fail; 1549 1550 switch (fdc->sc_errors) { 1551 case 0: 1552 /* try again */ 1553 fdc->sc_state = 1554 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1555 break; 1556 1557 case 1: case 2: case 3: 1558 /* didn't work; try recalibrating */ 1559 fdc->sc_state = DORECAL; 1560 break; 1561 1562 case 4: 1563 /* still no go; reset the bastard */ 1564 fdc->sc_state = DORESET; 1565 break; 1566 1567 default: 1568 fail: 1569 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1570 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1571 fd->sc_skip / FD_BSIZE(fd), 1572 (struct disklabel *)NULL); 1573 1574 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1575 NE7_ST0BITS, bits, sizeof(bits))); 1576 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1577 NE7_ST1BITS, bits, sizeof(bits))); 1578 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1579 NE7_ST2BITS, bits, sizeof(bits))); 1580 printf(" cyl %d head %d sec %d)\n", 1581 fdc->sc_status[3], fdc->sc_status[4], 1582 fdc->sc_status[5]); 1583 } 1584 1585 bp->b_flags |= B_ERROR; 1586 bp->b_error = EIO; 1587 fdfinish(fd, bp); 1588 } 1589 fdc->sc_errors++; 1590 } 1591 1592 int 1593 fdsize(dev) 1594 dev_t dev; 1595 { 1596 1597 /* Swapping to floppies would not make sense. */ 1598 return (-1); 1599 } 1600 1601 int 1602 fddump(dev, blkno, va, size) 1603 dev_t dev; 1604 daddr_t blkno; 1605 caddr_t va; 1606 size_t size; 1607 { 1608 1609 /* Not implemented. */ 1610 return (EINVAL); 1611 } 1612 1613 int 1614 fdioctl(dev, cmd, addr, flag, p) 1615 dev_t dev; 1616 u_long cmd; 1617 caddr_t addr; 1618 int flag; 1619 struct proc *p; 1620 { 1621 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1622 struct fdformat_parms *form_parms; 1623 struct fdformat_cmd *form_cmd; 1624 struct ne7_fd_formb fd_formb; 1625 int il[FD_MAX_NSEC + 1]; 1626 int i, j; 1627 int error; 1628 1629 switch (cmd) { 1630 case DIOCGDINFO: 1631 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1632 return 0; 1633 1634 case DIOCWLABEL: 1635 if ((flag & FWRITE) == 0) 1636 return EBADF; 1637 /* XXX do something */ 1638 return (0); 1639 1640 case DIOCWDINFO: 1641 if ((flag & FWRITE) == 0) 1642 return (EBADF); 1643 1644 error = setdisklabel(fd->sc_dk.dk_label, 1645 (struct disklabel *)addr, 0, 1646 fd->sc_dk.dk_cpulabel); 1647 if (error) 1648 return (error); 1649 1650 error = writedisklabel(dev, fdstrategy, 1651 fd->sc_dk.dk_label, 1652 fd->sc_dk.dk_cpulabel); 1653 return (error); 1654 1655 case DIOCLOCK: 1656 /* 1657 * Nothing to do here, really. 1658 */ 1659 return (0); 1660 1661 case DIOCEJECT: 1662 fd_do_eject(fd); 1663 return (0); 1664 1665 case FDIOCGETFORMAT: 1666 form_parms = (struct fdformat_parms *)addr; 1667 form_parms->fdformat_version = FDFORMAT_VERSION; 1668 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1669 form_parms->ncyl = fd->sc_type->cylinders; 1670 form_parms->nspt = fd->sc_type->sectrac; 1671 form_parms->ntrk = fd->sc_type->heads; 1672 form_parms->stepspercyl = fd->sc_type->step; 1673 form_parms->gaplen = fd->sc_type->gap2; 1674 form_parms->fillbyte = fd->sc_type->fillbyte; 1675 form_parms->interleave = fd->sc_type->interleave; 1676 switch (fd->sc_type->rate) { 1677 case FDC_500KBPS: 1678 form_parms->xfer_rate = 500 * 1024; 1679 break; 1680 case FDC_300KBPS: 1681 form_parms->xfer_rate = 300 * 1024; 1682 break; 1683 case FDC_250KBPS: 1684 form_parms->xfer_rate = 250 * 1024; 1685 break; 1686 default: 1687 return (EINVAL); 1688 } 1689 return (0); 1690 1691 case FDIOCSETFORMAT: 1692 if ((flag & FWRITE) == 0) 1693 return (EBADF); /* must be opened for writing */ 1694 1695 form_parms = (struct fdformat_parms *)addr; 1696 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1697 return (EINVAL);/* wrong version of formatting prog */ 1698 1699 i = form_parms->nbps >> 7; 1700 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1701 i & ~(1 << (ffs(i)-1))) 1702 /* not a power-of-two multiple of 128 */ 1703 return (EINVAL); 1704 1705 switch (form_parms->xfer_rate) { 1706 case 500 * 1024: 1707 fd->sc_type->rate = FDC_500KBPS; 1708 break; 1709 case 300 * 1024: 1710 fd->sc_type->rate = FDC_300KBPS; 1711 break; 1712 case 250 * 1024: 1713 fd->sc_type->rate = FDC_250KBPS; 1714 break; 1715 default: 1716 return (EINVAL); 1717 } 1718 1719 if (form_parms->nspt > FD_MAX_NSEC || 1720 form_parms->fillbyte > 0xff || 1721 form_parms->interleave > 0xff) 1722 return EINVAL; 1723 fd->sc_type->sectrac = form_parms->nspt; 1724 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1725 return EINVAL; 1726 fd->sc_type->heads = form_parms->ntrk; 1727 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1728 fd->sc_type->secsize = ffs(i)-1; 1729 fd->sc_type->gap2 = form_parms->gaplen; 1730 fd->sc_type->cylinders = form_parms->ncyl; 1731 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1732 form_parms->nbps / DEV_BSIZE; 1733 fd->sc_type->step = form_parms->stepspercyl; 1734 fd->sc_type->fillbyte = form_parms->fillbyte; 1735 fd->sc_type->interleave = form_parms->interleave; 1736 return (0); 1737 1738 case FDIOCFORMAT_TRACK: 1739 if((flag & FWRITE) == 0) 1740 /* must be opened for writing */ 1741 return (EBADF); 1742 form_cmd = (struct fdformat_cmd *)addr; 1743 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1744 /* wrong version of formatting prog */ 1745 return (EINVAL); 1746 1747 if (form_cmd->head >= fd->sc_type->heads || 1748 form_cmd->cylinder >= fd->sc_type->cylinders) { 1749 return (EINVAL); 1750 } 1751 1752 fd_formb.head = form_cmd->head; 1753 fd_formb.cyl = form_cmd->cylinder; 1754 fd_formb.transfer_rate = fd->sc_type->rate; 1755 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1756 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1757 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1758 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1759 1760 bzero(il, sizeof il); 1761 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1762 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1763 j++; 1764 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1765 j += fd->sc_type->interleave; 1766 } 1767 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1768 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1769 fd_formb.fd_formb_headno(i) = form_cmd->head; 1770 fd_formb.fd_formb_secno(i) = il[i+1]; 1771 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1772 } 1773 1774 return fdformat(dev, &fd_formb, p); 1775 1776 case FDIOCGETOPTS: /* get drive options */ 1777 *(int *)addr = fd->sc_opts; 1778 return (0); 1779 1780 case FDIOCSETOPTS: /* set drive options */ 1781 fd->sc_opts = *(int *)addr; 1782 return (0); 1783 1784 #ifdef DEBUG 1785 case _IO('f', 100): 1786 { 1787 int i; 1788 struct fdc_softc *fdc = (struct fdc_softc *) 1789 fd->sc_dv.dv_parent; 1790 1791 out_fdc(fdc, NE7CMD_DUMPREG); 1792 fdcresult(fdc); 1793 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1794 for (i = 0; i < fdc->sc_nstat; i++) 1795 printf(" 0x%x", fdc->sc_status[i]); 1796 printf(">\n"); 1797 } 1798 1799 return (0); 1800 case _IOW('f', 101, int): 1801 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1802 ~CFG_THRHLD_MASK; 1803 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1804 (*(int *)addr & CFG_THRHLD_MASK); 1805 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1806 return (0); 1807 case _IO('f', 102): 1808 { 1809 int i; 1810 struct fdc_softc *fdc = (struct fdc_softc *) 1811 fd->sc_dv.dv_parent; 1812 out_fdc(fdc, NE7CMD_SENSEI); 1813 fdcresult(fdc); 1814 printf("sensei(%d regs): <", fdc->sc_nstat); 1815 for (i=0; i< fdc->sc_nstat; i++) 1816 printf(" 0x%x", fdc->sc_status[i]); 1817 } 1818 printf(">\n"); 1819 return (0); 1820 #endif 1821 default: 1822 return (ENOTTY); 1823 } 1824 1825 #ifdef DIAGNOSTIC 1826 panic("fdioctl: impossible"); 1827 #endif 1828 } 1829 1830 int 1831 fdformat(dev, finfo, p) 1832 dev_t dev; 1833 struct ne7_fd_formb *finfo; 1834 struct proc *p; 1835 { 1836 int rv = 0, s; 1837 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1838 struct fd_type *type = fd->sc_type; 1839 struct buf *bp; 1840 1841 /* set up a buffer header for fdstrategy() */ 1842 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1843 if (bp == 0) 1844 return (ENOBUFS); 1845 1846 PHOLD(p); 1847 bzero((void *)bp, sizeof(struct buf)); 1848 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1849 bp->b_proc = p; 1850 bp->b_dev = dev; 1851 1852 /* 1853 * Calculate a fake blkno, so fdstrategy() would initiate a 1854 * seek to the requested cylinder. 1855 */ 1856 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1857 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1858 / DEV_BSIZE; 1859 1860 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1861 bp->b_data = (caddr_t)finfo; 1862 1863 #ifdef FD_DEBUG 1864 if (fdc_debug) 1865 printf("fdformat: blkno 0x%x count %ld\n", 1866 bp->b_blkno, bp->b_bcount); 1867 #endif 1868 1869 /* now do the format */ 1870 fdstrategy(bp); 1871 1872 /* ...and wait for it to complete */ 1873 s = splbio(); 1874 while (!(bp->b_flags & B_DONE)) { 1875 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1876 if (rv == EWOULDBLOCK) 1877 break; 1878 } 1879 splx(s); 1880 1881 if (rv == EWOULDBLOCK) { 1882 /* timed out */ 1883 rv = EIO; 1884 biodone(bp); 1885 } 1886 if (bp->b_flags & B_ERROR) { 1887 rv = bp->b_error; 1888 } 1889 PRELE(p); 1890 free(bp, M_TEMP); 1891 return (rv); 1892 } 1893 1894 void 1895 fdgetdisklabel(dev) 1896 dev_t dev; 1897 { 1898 int unit = FDUNIT(dev), i; 1899 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1900 struct disklabel *lp = fd->sc_dk.dk_label; 1901 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1902 1903 bzero(lp, sizeof(struct disklabel)); 1904 bzero(lp, sizeof(struct cpu_disklabel)); 1905 1906 lp->d_type = DTYPE_FLOPPY; 1907 lp->d_secsize = FD_BSIZE(fd); 1908 lp->d_secpercyl = fd->sc_type->seccyl; 1909 lp->d_nsectors = fd->sc_type->sectrac; 1910 lp->d_ncylinders = fd->sc_type->cylinders; 1911 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1912 lp->d_rpm = 3600; /* XXX like it matters... */ 1913 1914 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1915 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1916 lp->d_interleave = 1; 1917 1918 lp->d_partitions[RAW_PART].p_offset = 0; 1919 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1920 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1921 lp->d_npartitions = RAW_PART + 1; 1922 1923 lp->d_magic = DISKMAGIC; 1924 lp->d_magic2 = DISKMAGIC; 1925 lp->d_checksum = dkcksum(lp); 1926 1927 /* 1928 * Call the generic disklabel extraction routine. If there's 1929 * not a label there, fake it. 1930 */ 1931 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1932 strncpy(lp->d_packname, "default label", 1933 sizeof(lp->d_packname)); 1934 /* 1935 * Reset the partition info; it might have gotten 1936 * trashed in readdisklabel(). 1937 * 1938 * XXX Why do we have to do this? readdisklabel() 1939 * should be safe... 1940 */ 1941 for (i = 0; i < MAXPARTITIONS; ++i) { 1942 lp->d_partitions[i].p_offset = 0; 1943 if (i == RAW_PART) { 1944 lp->d_partitions[i].p_size = 1945 lp->d_secpercyl * lp->d_ncylinders; 1946 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1947 } else { 1948 lp->d_partitions[i].p_size = 0; 1949 lp->d_partitions[i].p_fstype = FS_UNUSED; 1950 } 1951 } 1952 lp->d_npartitions = RAW_PART + 1; 1953 } 1954 } 1955 1956 void 1957 fd_do_eject(fd) 1958 struct fd_softc *fd; 1959 { 1960 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1961 1962 if (CPU_ISSUN4C) { 1963 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 1964 delay(10); 1965 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 1966 return; 1967 } 1968 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 1969 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 1970 *fdc->sc_reg_dor = dor | FDO_EJ; 1971 delay(10); 1972 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 1973 return; 1974 } 1975 } 1976 1977 #ifdef MEMORY_DISK_HOOKS 1978 int fd_read_md_image __P((size_t *, caddr_t *)); 1979 #endif 1980 1981 /* ARGSUSED */ 1982 void 1983 fd_mountroot_hook(dev) 1984 struct device *dev; 1985 { 1986 int c; 1987 1988 fd_do_eject((struct fd_softc *)dev); 1989 printf("Insert filesystem floppy and press return."); 1990 for (;;) { 1991 c = cngetc(); 1992 if ((c == '\r') || (c == '\n')) { 1993 printf("\n"); 1994 break; 1995 } 1996 } 1997 #ifdef MEMORY_DISK_HOOKS 1998 { 1999 extern int (*md_read_image) __P((size_t *, caddr_t *)); 2000 md_read_image = fd_read_md_image; 2001 } 2002 #endif 2003 } 2004 2005 #ifdef MEMORY_DISK_HOOKS 2006 2007 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2008 2009 int 2010 fd_read_md_image(sizep, addrp) 2011 size_t *sizep; 2012 caddr_t *addrp; 2013 { 2014 struct buf buf, *bp = &buf; 2015 dev_t dev; 2016 off_t offset; 2017 caddr_t addr; 2018 2019 dev = makedev(54,0); /* XXX */ 2020 2021 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2022 *addrp = addr; 2023 2024 if (fdopen(dev, 0, S_IFCHR, NULL)) 2025 panic("fd: mountroot: fdopen"); 2026 2027 offset = 0; 2028 2029 for (;;) { 2030 bp->b_dev = dev; 2031 bp->b_error = 0; 2032 bp->b_resid = 0; 2033 bp->b_proc = NULL; 2034 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2035 bp->b_blkno = btodb(offset); 2036 bp->b_bcount = DEV_BSIZE; 2037 bp->b_data = addr; 2038 fdstrategy(bp); 2039 while ((bp->b_flags & B_DONE) == 0) { 2040 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2041 } 2042 if (bp->b_error) 2043 panic("fd: mountroot: fdread error %d", bp->b_error); 2044 2045 if (bp->b_resid != 0) 2046 break; 2047 2048 addr += DEV_BSIZE; 2049 offset += DEV_BSIZE; 2050 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2051 break; 2052 } 2053 (void)fdclose(dev, 0, S_IFCHR, NULL); 2054 *sizep = offset; 2055 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2056 return (0); 2057 } 2058 #endif 2059
Indexes created Fri Oct 03 02:09:57 GMT 2025