fd.c revision 1.50
1 /* $NetBSD: fd.c,v 1.50 1997/05/02 13:03:46 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 }; 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((struct fd_softc *)); 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 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(" %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 % FDC_BSIZE) != 0 && 660 (bp->b_flags & B_FORMAT) == 0)) { 661 bp->b_error = EINVAL; 662 goto bad; 663 } 664 665 /* If it's a null transfer, return immediately. */ 666 if (bp->b_bcount == 0) 667 goto done; 668 669 sz = howmany(bp->b_bcount, FDC_BSIZE); 670 671 if (bp->b_blkno + sz > fd->sc_type->size) { 672 sz = fd->sc_type->size - bp->b_blkno; 673 if (sz == 0) { 674 /* If exactly at end of disk, return EOF. */ 675 bp->b_resid = bp->b_bcount; 676 goto done; 677 } 678 if (sz < 0) { 679 /* If past end of disk, return EINVAL. */ 680 bp->b_error = EINVAL; 681 goto bad; 682 } 683 /* Otherwise, truncate request. */ 684 bp->b_bcount = sz << DEV_BSHIFT; 685 } 686 687 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 688 689 #ifdef FD_DEBUG 690 if (fdc_debug > 1) 691 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 692 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 693 #endif 694 695 /* Queue transfer on drive, activate drive and controller if idle. */ 696 s = splbio(); 697 disksort(&fd->sc_q, bp); 698 untimeout(fd_motor_off, fd); /* a good idea */ 699 if (!fd->sc_q.b_active) 700 fdstart(fd); 701 #ifdef DIAGNOSTIC 702 else { 703 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 704 if (fdc->sc_state == DEVIDLE) { 705 printf("fdstrategy: controller inactive\n"); 706 fdcstart(fdc); 707 } 708 } 709 #endif 710 splx(s); 711 return; 712 713 bad: 714 bp->b_flags |= B_ERROR; 715 done: 716 /* Toss transfer; we're done early. */ 717 biodone(bp); 718 } 719 720 void 721 fdstart(fd) 722 struct fd_softc *fd; 723 { 724 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 725 int active = fdc->sc_drives.tqh_first != 0; 726 727 /* Link into controller queue. */ 728 fd->sc_q.b_active = 1; 729 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 730 731 /* If controller not already active, start it. */ 732 if (!active) 733 fdcstart(fdc); 734 } 735 736 void 737 fdfinish(fd, bp) 738 struct fd_softc *fd; 739 struct buf *bp; 740 { 741 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 742 743 /* 744 * Move this drive to the end of the queue to give others a `fair' 745 * chance. We only force a switch if N operations are completed while 746 * another drive is waiting to be serviced, since there is a long motor 747 * startup delay whenever we switch. 748 */ 749 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 750 fd->sc_ops = 0; 751 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 752 if (bp->b_actf) { 753 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 754 } else 755 fd->sc_q.b_active = 0; 756 } 757 bp->b_resid = fd->sc_bcount; 758 fd->sc_skip = 0; 759 fd->sc_q.b_actf = bp->b_actf; 760 761 biodone(bp); 762 /* turn off motor 5s from now */ 763 timeout(fd_motor_off, fd, 5 * hz); 764 fdc->sc_state = DEVIDLE; 765 } 766 767 void 768 fdc_reset(fdc) 769 struct fdc_softc *fdc; 770 { 771 if (fdc->sc_flags & FDC_82077) { 772 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 773 } 774 775 *fdc->sc_reg_drs = DRS_RESET; 776 delay(10); 777 *fdc->sc_reg_drs = 0; 778 779 if (fdc->sc_flags & FDC_82077) { 780 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 781 } 782 #ifdef FD_DEBUG 783 if (fdc_debug) 784 printf("fdc reset\n"); 785 #endif 786 } 787 788 void 789 fd_set_motor(fdc) 790 struct fdc_softc *fdc; 791 { 792 struct fd_softc *fd; 793 u_char status; 794 int n; 795 796 if (fdc->sc_flags & FDC_82077) { 797 status = FDO_FRST | FDO_FDMAEN; 798 if ((fd = fdc->sc_drives.tqh_first) != NULL) 799 status |= fd->sc_drive; 800 801 for (n = 0; n < 4; n++) 802 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 803 status |= FDO_MOEN(n); 804 *fdc->sc_reg_dor = status; 805 } else { 806 int on = 0; 807 808 for (n = 0; n < 4; n++) 809 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 810 on = 1; 811 if (on) { 812 auxregbisc(AUXIO4C_FDS, 0); 813 } else { 814 auxregbisc(0, AUXIO4C_FDS); 815 } 816 } 817 } 818 819 void 820 fd_motor_off(arg) 821 void *arg; 822 { 823 struct fd_softc *fd = arg; 824 int s; 825 826 s = splbio(); 827 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 828 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 829 splx(s); 830 } 831 832 void 833 fd_motor_on(arg) 834 void *arg; 835 { 836 struct fd_softc *fd = arg; 837 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 838 int s; 839 840 s = splbio(); 841 fd->sc_flags &= ~FD_MOTOR_WAIT; 842 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 843 (void) fdcstate(fdc); 844 splx(s); 845 } 846 847 int 848 fdcresult(fdc) 849 struct fdc_softc *fdc; 850 { 851 u_char i; 852 int j = 100000, 853 n = 0; 854 855 for (; j; j--) { 856 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 857 if (i == NE7_RQM) 858 return (fdc->sc_nstat = n); 859 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 860 if (n >= sizeof(fdc->sc_status)) { 861 log(LOG_ERR, "fdcresult: overrun\n"); 862 return (-1); 863 } 864 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 865 } else 866 delay(10); 867 } 868 log(LOG_ERR, "fdcresult: timeout\n"); 869 return (fdc->sc_nstat = -1); 870 } 871 872 int 873 out_fdc(fdc, x) 874 struct fdc_softc *fdc; 875 u_char x; 876 { 877 int i = 100000; 878 879 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 880 delay(1); 881 if (i <= 0) 882 return (-1); 883 884 *fdc->sc_reg_fifo = x; 885 return (0); 886 } 887 888 int 889 fdopen(dev, flags, fmt, p) 890 dev_t dev; 891 int flags, fmt; 892 struct proc *p; 893 { 894 int unit, pmask; 895 struct fd_softc *fd; 896 struct fd_type *type; 897 898 unit = FDUNIT(dev); 899 if (unit >= fd_cd.cd_ndevs) 900 return (ENXIO); 901 fd = fd_cd.cd_devs[unit]; 902 if (fd == 0) 903 return (ENXIO); 904 type = fd_dev_to_type(fd, dev); 905 if (type == NULL) 906 return (ENXIO); 907 908 if ((fd->sc_flags & FD_OPEN) != 0 && 909 fd->sc_type != type) 910 return (EBUSY); 911 912 fd->sc_type = type; 913 fd->sc_cylin = -1; 914 fd->sc_flags |= FD_OPEN; 915 916 /* 917 * Only update the disklabel if we're not open anywhere else. 918 */ 919 if (fd->sc_dk.dk_openmask == 0) 920 fdgetdisklabel(dev); 921 922 pmask = (1 << DISKPART(dev)); 923 924 switch (fmt) { 925 case S_IFCHR: 926 fd->sc_dk.dk_copenmask |= pmask; 927 break; 928 929 case S_IFBLK: 930 fd->sc_dk.dk_bopenmask |= pmask; 931 break; 932 } 933 fd->sc_dk.dk_openmask = 934 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 935 936 return (0); 937 } 938 939 int 940 fdclose(dev, flags, fmt, p) 941 dev_t dev; 942 int flags, fmt; 943 struct proc *p; 944 { 945 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 946 int pmask = (1 << DISKPART(dev)); 947 948 fd->sc_flags &= ~FD_OPEN; 949 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 950 951 switch (fmt) { 952 case S_IFCHR: 953 fd->sc_dk.dk_copenmask &= ~pmask; 954 break; 955 956 case S_IFBLK: 957 fd->sc_dk.dk_bopenmask &= ~pmask; 958 break; 959 } 960 fd->sc_dk.dk_openmask = 961 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 962 963 return (0); 964 } 965 966 int 967 fdread(dev, uio, flag) 968 dev_t dev; 969 struct uio *uio; 970 int flag; 971 { 972 973 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 974 } 975 976 int 977 fdwrite(dev, uio, flag) 978 dev_t dev; 979 struct uio *uio; 980 int flag; 981 { 982 983 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 984 } 985 986 void 987 fdcstart(fdc) 988 struct fdc_softc *fdc; 989 { 990 991 #ifdef DIAGNOSTIC 992 /* only got here if controller's drive queue was inactive; should 993 be in idle state */ 994 if (fdc->sc_state != DEVIDLE) { 995 printf("fdcstart: not idle\n"); 996 return; 997 } 998 #endif 999 (void) fdcstate(fdc); 1000 } 1001 1002 void 1003 fdcstatus(dv, n, s) 1004 struct device *dv; 1005 int n; 1006 char *s; 1007 { 1008 struct fdc_softc *fdc = (void *)dv->dv_parent; 1009 char bits[64]; 1010 #if 0 1011 /* 1012 * A 82072 seems to return <invalid command> on 1013 * gratuitous Sense Interrupt commands. 1014 */ 1015 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1016 out_fdc(fdc, NE7CMD_SENSEI); 1017 (void) fdcresult(fdc); 1018 n = 2; 1019 } 1020 #endif 1021 1022 /* Just print last status */ 1023 n = fdc->sc_nstat; 1024 1025 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1026 1027 switch (n) { 1028 case 0: 1029 printf("\n"); 1030 break; 1031 case 2: 1032 printf(" (st0 %s cyl %d)\n", 1033 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1034 bits, sizeof(bits)), fdc->sc_status[1]); 1035 break; 1036 case 7: 1037 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1038 NE7_ST0BITS, bits, sizeof(bits))); 1039 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1040 NE7_ST1BITS, bits, sizeof(bits))); 1041 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1042 NE7_ST2BITS, bits, sizeof(bits))); 1043 printf(" cyl %d head %d sec %d)\n", 1044 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1045 break; 1046 #ifdef DIAGNOSTIC 1047 default: 1048 printf(" fdcstatus: weird size: %d\n", n); 1049 break; 1050 #endif 1051 } 1052 } 1053 1054 void 1055 fdctimeout(arg) 1056 void *arg; 1057 { 1058 struct fdc_softc *fdc = arg; 1059 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1060 int s; 1061 1062 s = splbio(); 1063 fdcstatus(&fd->sc_dv, 0, "timeout"); 1064 1065 if (fd->sc_q.b_actf) 1066 fdc->sc_state++; 1067 else 1068 fdc->sc_state = DEVIDLE; 1069 1070 (void) fdcstate(fdc); 1071 splx(s); 1072 } 1073 1074 void 1075 fdcpseudointr(arg) 1076 void *arg; 1077 { 1078 struct fdc_softc *fdc = arg; 1079 int s; 1080 1081 /* Just ensure it has the right spl. */ 1082 s = splbio(); 1083 (void) fdcstate(fdc); 1084 splx(s); 1085 } 1086 1087 1088 #ifdef FDC_C_HANDLER 1089 /* 1090 * hardware interrupt entry point: must be converted to `fast' 1091 * (in-window) handler. 1092 */ 1093 int 1094 fdchwintr(fdc) 1095 struct fdc_softc *fdc; 1096 { 1097 1098 switch (fdc->sc_istate) { 1099 case ISTATE_IDLE: 1100 return (0); 1101 case ISTATE_SENSEI: 1102 out_fdc(fdc, NE7CMD_SENSEI); 1103 fdcresult(fdc); 1104 fdc->sc_istate = ISTATE_IDLE; 1105 FD_SET_SWINTR; 1106 return (1); 1107 case ISTATE_SPURIOUS: 1108 fdcresult(fdc); 1109 fdc->sc_istate = ISTATE_SPURIOUS; 1110 printf("fdc: stray hard interrupt... "); 1111 FD_SET_SWINTR; 1112 return (1); 1113 case ISTATE_DMA: 1114 break; 1115 default: 1116 printf("fdc: goofed ...\n"); 1117 return (1); 1118 } 1119 1120 for (;;) { 1121 register int msr; 1122 1123 msr = *fdc->sc_reg_msr; 1124 1125 if ((msr & NE7_RQM) == 0) 1126 break; 1127 1128 if ((msr & NE7_NDM) == 0) { 1129 fdcresult(fdc); 1130 fdc->sc_istate = ISTATE_IDLE; 1131 ienab_bis(IE_FDSOFT); 1132 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1133 break; 1134 } 1135 1136 if (msr & NE7_DIO) { 1137 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1138 } else { 1139 *fdc->sc_reg_fifo = *fdc->sc_data++; 1140 } 1141 if (--fdc->sc_tc == 0) { 1142 fdc->sc_istate = ISTATE_DONE; 1143 FTC_FLIP; 1144 fdcresult(fdc); 1145 FD_SET_SWINTR; 1146 break; 1147 } 1148 } 1149 return (1); 1150 } 1151 #endif 1152 1153 int 1154 fdcswintr(fdc) 1155 struct fdc_softc *fdc; 1156 { 1157 int s; 1158 1159 if (fdc->sc_istate != ISTATE_DONE) 1160 return (0); 1161 1162 fdc->sc_istate = ISTATE_IDLE; 1163 s = splbio(); 1164 fdcstate(fdc); 1165 splx(s); 1166 return (1); 1167 } 1168 1169 int 1170 fdcstate(fdc) 1171 struct fdc_softc *fdc; 1172 { 1173 #define st0 fdc->sc_status[0] 1174 #define st1 fdc->sc_status[1] 1175 #define cyl fdc->sc_status[1] 1176 #define OUT_FDC(fdc, c, s) \ 1177 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1178 1179 struct fd_softc *fd; 1180 struct buf *bp; 1181 int read, head, sec, nblks; 1182 struct fd_type *type; 1183 struct ne7_fd_formb *finfo = NULL; 1184 1185 1186 if (fdc->sc_istate != ISTATE_IDLE) { 1187 /* Trouble... */ 1188 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1189 fdc->sc_state, fdc->sc_istate); 1190 fdc->sc_istate = ISTATE_IDLE; 1191 if (fdc->sc_state == RESETCOMPLETE || 1192 fdc->sc_state == RESETTIMEDOUT) { 1193 panic("fdcintr: spurious interrupt can't be cleared"); 1194 } 1195 goto doreset; 1196 } 1197 1198 loop: 1199 /* Is there a drive for the controller to do a transfer with? */ 1200 fd = fdc->sc_drives.tqh_first; 1201 if (fd == NULL) { 1202 fdc->sc_state = DEVIDLE; 1203 return (0); 1204 } 1205 1206 /* Is there a transfer to this drive? If not, deactivate drive. */ 1207 bp = fd->sc_q.b_actf; 1208 if (bp == NULL) { 1209 fd->sc_ops = 0; 1210 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1211 fd->sc_q.b_active = 0; 1212 goto loop; 1213 } 1214 1215 if (bp->b_flags & B_FORMAT) 1216 finfo = (struct ne7_fd_formb *)bp->b_data; 1217 1218 switch (fdc->sc_state) { 1219 case DEVIDLE: 1220 fdc->sc_errors = 0; 1221 fd->sc_skip = 0; 1222 fd->sc_bcount = bp->b_bcount; 1223 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1224 untimeout(fd_motor_off, fd); 1225 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1226 fdc->sc_state = MOTORWAIT; 1227 return (1); 1228 } 1229 if ((fd->sc_flags & FD_MOTOR) == 0) { 1230 /* Turn on the motor, being careful about pairing. */ 1231 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1232 if (ofd && ofd->sc_flags & FD_MOTOR) { 1233 untimeout(fd_motor_off, ofd); 1234 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1235 } 1236 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1237 fd_set_motor(fdc); 1238 fdc->sc_state = MOTORWAIT; 1239 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1240 /* Allow .25s for motor to stabilize. */ 1241 timeout(fd_motor_on, fd, hz / 4); 1242 } else { 1243 fd->sc_flags &= ~FD_MOTOR_WAIT; 1244 goto loop; 1245 } 1246 return (1); 1247 } 1248 /* Make sure the right drive is selected. */ 1249 fd_set_motor(fdc); 1250 1251 /*FALLTHROUGH*/ 1252 case DOSEEK: 1253 doseek: 1254 if ((fdc->sc_flags & FDC_EIS) && 1255 (bp->b_flags & B_FORMAT) == 0) { 1256 fd->sc_cylin = bp->b_cylin; 1257 /* We use implied seek */ 1258 goto doio; 1259 } 1260 1261 if (fd->sc_cylin == bp->b_cylin) 1262 goto doio; 1263 1264 /* specify command */ 1265 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1266 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1267 /* XXX head load time == 6ms */ 1268 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1269 1270 fdc->sc_istate = ISTATE_SENSEI; 1271 /* seek function */ 1272 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1273 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1274 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1275 1276 fd->sc_cylin = -1; 1277 fdc->sc_state = SEEKWAIT; 1278 fdc->sc_nstat = 0; 1279 1280 fd->sc_dk.dk_seek++; 1281 disk_busy(&fd->sc_dk); 1282 1283 timeout(fdctimeout, fdc, 4 * hz); 1284 return (1); 1285 1286 case DOIO: 1287 doio: 1288 if (finfo != NULL) 1289 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1290 (char *)finfo; 1291 type = fd->sc_type; 1292 sec = fd->sc_blkno % type->seccyl; 1293 nblks = type->seccyl - sec; 1294 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1295 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1296 fd->sc_nblks = nblks; 1297 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1298 head = sec / type->sectrac; 1299 sec -= head * type->sectrac; 1300 #ifdef DIAGNOSTIC 1301 {int block; 1302 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1303 if (block != fd->sc_blkno) { 1304 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1305 #ifdef DDB 1306 Debugger(); 1307 #endif 1308 }} 1309 #endif 1310 read = bp->b_flags & B_READ; 1311 1312 /* Setup for pseudo DMA */ 1313 fdc->sc_data = bp->b_data + fd->sc_skip; 1314 fdc->sc_tc = fd->sc_nbytes; 1315 1316 *fdc->sc_reg_drs = type->rate; 1317 #ifdef FD_DEBUG 1318 if (fdc_debug > 1) 1319 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1320 read ? "read" : "write", fd->sc_drive, 1321 fd->sc_cylin, head, sec, nblks); 1322 #endif 1323 fdc->sc_state = IOCOMPLETE; 1324 fdc->sc_istate = ISTATE_DMA; 1325 fdc->sc_nstat = 0; 1326 if (finfo != NULL) { 1327 /* formatting */ 1328 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1329 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1330 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1331 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1332 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1333 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1334 } else { 1335 if (read) 1336 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1337 else 1338 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1339 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1340 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1341 OUT_FDC(fdc, head, IOTIMEDOUT); 1342 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1343 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1344 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1345 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1346 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1347 } 1348 1349 disk_busy(&fd->sc_dk); 1350 1351 /* allow 2 seconds for operation */ 1352 timeout(fdctimeout, fdc, 2 * hz); 1353 return (1); /* will return later */ 1354 1355 case SEEKWAIT: 1356 untimeout(fdctimeout, fdc); 1357 fdc->sc_state = SEEKCOMPLETE; 1358 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1359 /* allow 1/50 second for heads to settle */ 1360 timeout(fdcpseudointr, fdc, hz / 50); 1361 return (1); /* will return later */ 1362 } 1363 /*FALLTHROUGH*/ 1364 case SEEKCOMPLETE: 1365 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1366 1367 /* Make sure seek really happened. */ 1368 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1369 cyl != bp->b_cylin * fd->sc_type->step) { 1370 #ifdef FD_DEBUG 1371 if (fdc_debug) 1372 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1373 #endif 1374 fdcretry(fdc); 1375 goto loop; 1376 } 1377 fd->sc_cylin = bp->b_cylin; 1378 goto doio; 1379 1380 case IOTIMEDOUT: 1381 FTC_FLIP; 1382 (void)fdcresult(fdc); 1383 /*FALLTHROUGH*/ 1384 case SEEKTIMEDOUT: 1385 case RECALTIMEDOUT: 1386 case RESETTIMEDOUT: 1387 fdcretry(fdc); 1388 goto loop; 1389 1390 case IOCOMPLETE: /* IO DONE, post-analyze */ 1391 untimeout(fdctimeout, fdc); 1392 1393 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1394 1395 if (fdc->sc_nstat != 7 || st1 != 0 || 1396 ((st0 & 0xf8) != 0 && 1397 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1398 #ifdef FD_DEBUG 1399 if (fdc_debug) { 1400 fdcstatus(&fd->sc_dv, 7, 1401 bp->b_flags & B_READ 1402 ? "read failed" : "write failed"); 1403 printf("blkno %d nblks %d nstat %d tc %d\n", 1404 fd->sc_blkno, fd->sc_nblks, 1405 fdc->sc_nstat, fdc->sc_tc); 1406 } 1407 #endif 1408 if (fdc->sc_nstat == 7 && 1409 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1410 1411 /* 1412 * Silently retry overruns if no other 1413 * error bit is set. Adjust threshold. 1414 */ 1415 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1416 if (thr < 15) { 1417 thr++; 1418 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1419 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1420 #ifdef FD_DEBUG 1421 if (fdc_debug) 1422 printf("fdc: %d -> threshold\n", thr); 1423 #endif 1424 fdconf(fdc); 1425 fdc->sc_overruns = 0; 1426 } 1427 if (++fdc->sc_overruns < 3) { 1428 fdc->sc_state = DOIO; 1429 goto loop; 1430 } 1431 } 1432 fdcretry(fdc); 1433 goto loop; 1434 } 1435 if (fdc->sc_errors) { 1436 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1437 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1438 printf("\n"); 1439 fdc->sc_errors = 0; 1440 } else { 1441 if (--fdc->sc_overruns < -20) { 1442 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1443 if (thr > 0) { 1444 thr--; 1445 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1446 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1447 #ifdef FD_DEBUG 1448 if (fdc_debug) 1449 printf("fdc: %d -> threshold\n", thr); 1450 #endif 1451 fdconf(fdc); 1452 } 1453 fdc->sc_overruns = 0; 1454 } 1455 } 1456 fd->sc_blkno += fd->sc_nblks; 1457 fd->sc_skip += fd->sc_nbytes; 1458 fd->sc_bcount -= fd->sc_nbytes; 1459 if (finfo == NULL && fd->sc_bcount > 0) { 1460 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1461 goto doseek; 1462 } 1463 fdfinish(fd, bp); 1464 goto loop; 1465 1466 case DORESET: 1467 doreset: 1468 /* try a reset, keep motor on */ 1469 fd_set_motor(fdc); 1470 delay(100); 1471 fdc_reset(fdc); 1472 fdc->sc_nstat = 0; 1473 fdc->sc_istate = ISTATE_SENSEI; 1474 fdc->sc_state = RESETCOMPLETE; 1475 timeout(fdctimeout, fdc, hz / 2); 1476 return (1); /* will return later */ 1477 1478 case RESETCOMPLETE: 1479 untimeout(fdctimeout, fdc); 1480 fdconf(fdc); 1481 1482 /* fall through */ 1483 case DORECAL: 1484 fdc->sc_state = RECALWAIT; 1485 fdc->sc_istate = ISTATE_SENSEI; 1486 fdc->sc_nstat = 0; 1487 /* recalibrate function */ 1488 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1489 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1490 timeout(fdctimeout, fdc, 5 * hz); 1491 return (1); /* will return later */ 1492 1493 case RECALWAIT: 1494 untimeout(fdctimeout, fdc); 1495 fdc->sc_state = RECALCOMPLETE; 1496 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1497 /* allow 1/30 second for heads to settle */ 1498 timeout(fdcpseudointr, fdc, hz / 30); 1499 return (1); /* will return later */ 1500 } 1501 1502 case RECALCOMPLETE: 1503 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1504 #ifdef FD_DEBUG 1505 if (fdc_debug) 1506 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1507 #endif 1508 fdcretry(fdc); 1509 goto loop; 1510 } 1511 fd->sc_cylin = 0; 1512 goto doseek; 1513 1514 case MOTORWAIT: 1515 if (fd->sc_flags & FD_MOTOR_WAIT) 1516 return (1); /* time's not up yet */ 1517 goto doseek; 1518 1519 default: 1520 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1521 return (1); 1522 } 1523 #ifdef DIAGNOSTIC 1524 panic("fdcintr: impossible"); 1525 #endif 1526 #undef st0 1527 #undef st1 1528 #undef cyl 1529 } 1530 1531 void 1532 fdcretry(fdc) 1533 struct fdc_softc *fdc; 1534 { 1535 char bits[64]; 1536 struct fd_softc *fd; 1537 struct buf *bp; 1538 1539 fd = fdc->sc_drives.tqh_first; 1540 bp = fd->sc_q.b_actf; 1541 1542 fdc->sc_overruns = 0; 1543 if (fd->sc_opts & FDOPT_NORETRY) 1544 goto fail; 1545 1546 switch (fdc->sc_errors) { 1547 case 0: 1548 /* try again */ 1549 fdc->sc_state = 1550 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1551 break; 1552 1553 case 1: case 2: case 3: 1554 /* didn't work; try recalibrating */ 1555 fdc->sc_state = DORECAL; 1556 break; 1557 1558 case 4: 1559 /* still no go; reset the bastard */ 1560 fdc->sc_state = DORESET; 1561 break; 1562 1563 default: 1564 fail: 1565 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1566 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1567 fd->sc_skip / FDC_BSIZE, 1568 (struct disklabel *)NULL); 1569 1570 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1571 NE7_ST0BITS, bits, sizeof(bits))); 1572 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1573 NE7_ST1BITS, bits, sizeof(bits))); 1574 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1575 NE7_ST2BITS, bits, sizeof(bits))); 1576 printf(" cyl %d head %d sec %d)\n", 1577 fdc->sc_status[3], fdc->sc_status[4], 1578 fdc->sc_status[5]); 1579 } 1580 1581 bp->b_flags |= B_ERROR; 1582 bp->b_error = EIO; 1583 fdfinish(fd, bp); 1584 } 1585 fdc->sc_errors++; 1586 } 1587 1588 int 1589 fdsize(dev) 1590 dev_t dev; 1591 { 1592 1593 /* Swapping to floppies would not make sense. */ 1594 return (-1); 1595 } 1596 1597 int 1598 fddump(dev, blkno, va, size) 1599 dev_t dev; 1600 daddr_t blkno; 1601 caddr_t va; 1602 size_t size; 1603 { 1604 1605 /* Not implemented. */ 1606 return (EINVAL); 1607 } 1608 1609 int 1610 fdioctl(dev, cmd, addr, flag, p) 1611 dev_t dev; 1612 u_long cmd; 1613 caddr_t addr; 1614 int flag; 1615 struct proc *p; 1616 { 1617 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1618 struct fdformat_parms *form_parms; 1619 struct fdformat_cmd *form_cmd; 1620 struct ne7_fd_formb fd_formb; 1621 int il[FD_MAX_NSEC + 1]; 1622 int i, j; 1623 int error; 1624 1625 switch (cmd) { 1626 case DIOCGDINFO: 1627 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1628 return 0; 1629 1630 case DIOCWLABEL: 1631 if ((flag & FWRITE) == 0) 1632 return EBADF; 1633 /* XXX do something */ 1634 return (0); 1635 1636 case DIOCWDINFO: 1637 if ((flag & FWRITE) == 0) 1638 return (EBADF); 1639 1640 error = setdisklabel(fd->sc_dk.dk_label, 1641 (struct disklabel *)addr, 0, 1642 fd->sc_dk.dk_cpulabel); 1643 if (error) 1644 return (error); 1645 1646 error = writedisklabel(dev, fdstrategy, 1647 fd->sc_dk.dk_label, 1648 fd->sc_dk.dk_cpulabel); 1649 return (error); 1650 1651 case DIOCLOCK: 1652 /* 1653 * Nothing to do here, really. 1654 */ 1655 return (0); 1656 1657 case DIOCEJECT: 1658 fd_do_eject(fd); 1659 return (0); 1660 1661 case FDIOCGETFORMAT: 1662 form_parms = (struct fdformat_parms *)addr; 1663 form_parms->fdformat_version = FDFORMAT_VERSION; 1664 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1665 form_parms->ncyl = fd->sc_type->cylinders; 1666 form_parms->nspt = fd->sc_type->sectrac; 1667 form_parms->ntrk = fd->sc_type->heads; 1668 form_parms->stepspercyl = fd->sc_type->step; 1669 form_parms->gaplen = fd->sc_type->gap2; 1670 form_parms->fillbyte = fd->sc_type->fillbyte; 1671 form_parms->interleave = fd->sc_type->interleave; 1672 switch (fd->sc_type->rate) { 1673 case FDC_500KBPS: 1674 form_parms->xfer_rate = 500 * 1024; 1675 break; 1676 case FDC_300KBPS: 1677 form_parms->xfer_rate = 300 * 1024; 1678 break; 1679 case FDC_250KBPS: 1680 form_parms->xfer_rate = 250 * 1024; 1681 break; 1682 default: 1683 return (EINVAL); 1684 } 1685 return (0); 1686 1687 case FDIOCSETFORMAT: 1688 if ((flag & FWRITE) == 0) 1689 return (EBADF); /* must be opened for writing */ 1690 1691 form_parms = (struct fdformat_parms *)addr; 1692 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1693 return (EINVAL);/* wrong version of formatting prog */ 1694 1695 i = form_parms->nbps >> 7; 1696 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1697 i & ~(1 << (ffs(i)-1))) 1698 /* not a power-of-two multiple of 128 */ 1699 return (EINVAL); 1700 1701 switch (form_parms->xfer_rate) { 1702 case 500 * 1024: 1703 fd->sc_type->rate = FDC_500KBPS; 1704 break; 1705 case 300 * 1024: 1706 fd->sc_type->rate = FDC_300KBPS; 1707 break; 1708 case 250 * 1024: 1709 fd->sc_type->rate = FDC_250KBPS; 1710 break; 1711 default: 1712 return (EINVAL); 1713 } 1714 1715 if (form_parms->nspt > FD_MAX_NSEC || 1716 form_parms->fillbyte > 0xff || 1717 form_parms->interleave > 0xff) 1718 return EINVAL; 1719 fd->sc_type->sectrac = form_parms->nspt; 1720 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1721 return EINVAL; 1722 fd->sc_type->heads = form_parms->ntrk; 1723 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1724 fd->sc_type->secsize = ffs(i)-1; 1725 fd->sc_type->gap2 = form_parms->gaplen; 1726 fd->sc_type->cylinders = form_parms->ncyl; 1727 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1728 form_parms->nbps / DEV_BSIZE; 1729 fd->sc_type->step = form_parms->stepspercyl; 1730 fd->sc_type->fillbyte = form_parms->fillbyte; 1731 fd->sc_type->interleave = form_parms->interleave; 1732 return (0); 1733 1734 case FDIOCFORMAT_TRACK: 1735 if((flag & FWRITE) == 0) 1736 /* must be opened for writing */ 1737 return (EBADF); 1738 form_cmd = (struct fdformat_cmd *)addr; 1739 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1740 /* wrong version of formatting prog */ 1741 return (EINVAL); 1742 1743 if (form_cmd->head >= fd->sc_type->heads || 1744 form_cmd->cylinder >= fd->sc_type->cylinders) { 1745 return (EINVAL); 1746 } 1747 1748 fd_formb.head = form_cmd->head; 1749 fd_formb.cyl = form_cmd->cylinder; 1750 fd_formb.transfer_rate = fd->sc_type->rate; 1751 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1752 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1753 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1754 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1755 1756 bzero(il, sizeof il); 1757 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1758 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1759 j++; 1760 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1761 j += fd->sc_type->interleave; 1762 } 1763 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1764 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1765 fd_formb.fd_formb_headno(i) = form_cmd->head; 1766 fd_formb.fd_formb_secno(i) = il[i+1]; 1767 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1768 } 1769 1770 return fdformat(dev, &fd_formb, p); 1771 1772 case FDIOCGETOPTS: /* get drive options */ 1773 *(int *)addr = fd->sc_opts; 1774 return (0); 1775 1776 case FDIOCSETOPTS: /* set drive options */ 1777 fd->sc_opts = *(int *)addr; 1778 return (0); 1779 1780 #ifdef DEBUG 1781 case _IO('f', 100): 1782 { 1783 int i; 1784 struct fdc_softc *fdc = (struct fdc_softc *) 1785 fd->sc_dv.dv_parent; 1786 1787 out_fdc(fdc, NE7CMD_DUMPREG); 1788 fdcresult(fdc); 1789 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1790 for (i = 0; i < fdc->sc_nstat; i++) 1791 printf(" %x", fdc->sc_status[i]); 1792 printf(">\n"); 1793 } 1794 1795 return (0); 1796 case _IOW('f', 101, int): 1797 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1798 ~CFG_THRHLD_MASK; 1799 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1800 (*(int *)addr & CFG_THRHLD_MASK); 1801 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1802 return (0); 1803 case _IO('f', 102): 1804 { 1805 int i; 1806 struct fdc_softc *fdc = (struct fdc_softc *) 1807 fd->sc_dv.dv_parent; 1808 out_fdc(fdc, NE7CMD_SENSEI); 1809 fdcresult(fdc); 1810 printf("sensei(%d regs): <", fdc->sc_nstat); 1811 for (i=0; i< fdc->sc_nstat; i++) 1812 printf(" 0x%x", fdc->sc_status[i]); 1813 } 1814 printf(">\n"); 1815 return (0); 1816 #endif 1817 default: 1818 return (ENOTTY); 1819 } 1820 1821 #ifdef DIAGNOSTIC 1822 panic("fdioctl: impossible"); 1823 #endif 1824 } 1825 1826 int 1827 fdformat(dev, finfo, p) 1828 dev_t dev; 1829 struct ne7_fd_formb *finfo; 1830 struct proc *p; 1831 { 1832 int rv = 0, s; 1833 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1834 struct fd_type *type = fd->sc_type; 1835 struct buf *bp; 1836 1837 /* set up a buffer header for fdstrategy() */ 1838 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1839 if (bp == 0) 1840 return (ENOBUFS); 1841 1842 PHOLD(p); 1843 bzero((void *)bp, sizeof(struct buf)); 1844 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1845 bp->b_proc = p; 1846 bp->b_dev = dev; 1847 1848 /* 1849 * Calculate a fake blkno, so fdstrategy() would initiate a 1850 * seek to the requested cylinder. 1851 */ 1852 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1853 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1854 1855 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1856 bp->b_data = (caddr_t)finfo; 1857 1858 #ifdef FD_DEBUG 1859 if (fdc_debug) 1860 printf("fdformat: blkno %x count %ld\n", 1861 bp->b_blkno, bp->b_bcount); 1862 #endif 1863 1864 /* now do the format */ 1865 fdstrategy(bp); 1866 1867 /* ...and wait for it to complete */ 1868 s = splbio(); 1869 while (!(bp->b_flags & B_DONE)) { 1870 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1871 if (rv == EWOULDBLOCK) 1872 break; 1873 } 1874 splx(s); 1875 1876 if (rv == EWOULDBLOCK) { 1877 /* timed out */ 1878 rv = EIO; 1879 biodone(bp); 1880 } 1881 if (bp->b_flags & B_ERROR) { 1882 rv = bp->b_error; 1883 } 1884 PRELE(p); 1885 free(bp, M_TEMP); 1886 return (rv); 1887 } 1888 1889 void 1890 fdgetdisklabel(dev) 1891 dev_t dev; 1892 { 1893 int unit = FDUNIT(dev), i; 1894 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1895 struct disklabel *lp = fd->sc_dk.dk_label; 1896 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1897 1898 bzero(lp, sizeof(struct disklabel)); 1899 bzero(lp, sizeof(struct cpu_disklabel)); 1900 1901 lp->d_type = DTYPE_FLOPPY; 1902 lp->d_secsize = FDC_BSIZE; 1903 lp->d_secpercyl = fd->sc_type->seccyl; 1904 lp->d_nsectors = fd->sc_type->sectrac; 1905 lp->d_ncylinders = fd->sc_type->cylinders; 1906 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1907 lp->d_rpm = 3600; /* XXX like it matters... */ 1908 1909 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1910 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1911 lp->d_interleave = 1; 1912 1913 lp->d_partitions[RAW_PART].p_offset = 0; 1914 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1915 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1916 lp->d_npartitions = RAW_PART + 1; 1917 1918 lp->d_magic = DISKMAGIC; 1919 lp->d_magic2 = DISKMAGIC; 1920 lp->d_checksum = dkcksum(lp); 1921 1922 /* 1923 * Call the generic disklabel extraction routine. If there's 1924 * not a label there, fake it. 1925 */ 1926 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1927 strncpy(lp->d_packname, "default label", 1928 sizeof(lp->d_packname)); 1929 /* 1930 * Reset the partition info; it might have gotten 1931 * trashed in readdisklabel(). 1932 * 1933 * XXX Why do we have to do this? readdisklabel() 1934 * should be safe... 1935 */ 1936 for (i = 0; i < MAXPARTITIONS; ++i) { 1937 lp->d_partitions[i].p_offset = 0; 1938 if (i == RAW_PART) { 1939 lp->d_partitions[i].p_size = 1940 lp->d_secpercyl * lp->d_ncylinders; 1941 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1942 } else { 1943 lp->d_partitions[i].p_size = 0; 1944 lp->d_partitions[i].p_fstype = FS_UNUSED; 1945 } 1946 } 1947 lp->d_npartitions = RAW_PART + 1; 1948 } 1949 } 1950 1951 void 1952 fd_do_eject(fd) 1953 struct fd_softc *fd; 1954 { 1955 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1956 1957 if (CPU_ISSUN4C) { 1958 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 1959 delay(10); 1960 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 1961 return; 1962 } 1963 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 1964 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 1965 *fdc->sc_reg_dor = dor | FDO_EJ; 1966 delay(10); 1967 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 1968 return; 1969 } 1970 } 1971 1972 #ifdef MEMORY_DISK_HOOKS 1973 int fd_read_md_image __P((size_t *, caddr_t *)); 1974 #endif 1975 1976 /* ARGSUSED */ 1977 void 1978 fd_mountroot_hook(dev) 1979 struct device *dev; 1980 { 1981 int c; 1982 1983 fd_do_eject((struct fd_softc *)dev); 1984 printf("Insert filesystem floppy and press return."); 1985 for (;;) { 1986 c = cngetc(); 1987 if ((c == '\r') || (c == '\n')) { 1988 printf("\n"); 1989 break; 1990 } 1991 } 1992 #ifdef MEMORY_DISK_HOOKS 1993 { 1994 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1995 md_read_image = fd_read_md_image; 1996 } 1997 #endif 1998 } 1999 2000 #ifdef MEMORY_DISK_HOOKS 2001 2002 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2003 2004 int 2005 fd_read_md_image(sizep, addrp) 2006 size_t *sizep; 2007 caddr_t *addrp; 2008 { 2009 struct buf buf, *bp = &buf; 2010 dev_t dev; 2011 off_t offset; 2012 caddr_t addr; 2013 2014 dev = makedev(54,0); /* XXX */ 2015 2016 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2017 *addrp = addr; 2018 2019 if (fdopen(dev, 0, S_IFCHR, NULL)) 2020 panic("fd: mountroot: fdopen"); 2021 2022 offset = 0; 2023 2024 for (;;) { 2025 bp->b_dev = dev; 2026 bp->b_error = 0; 2027 bp->b_resid = 0; 2028 bp->b_proc = NULL; 2029 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2030 bp->b_blkno = btodb(offset); 2031 bp->b_bcount = DEV_BSIZE; 2032 bp->b_data = addr; 2033 fdstrategy(bp); 2034 while ((bp->b_flags & B_DONE) == 0) { 2035 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2036 } 2037 if (bp->b_error) 2038 panic("fd: mountroot: fdread error %d", bp->b_error); 2039 2040 if (bp->b_resid != 0) 2041 break; 2042 2043 addr += DEV_BSIZE; 2044 offset += DEV_BSIZE; 2045 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2046 break; 2047 } 2048 (void)fdclose(dev, 0, S_IFCHR, NULL); 2049 *sizep = offset; 2050 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2051 return (0); 2052 } 2053 #endif 2054
Indexes created Fri Oct 03 02:09:57 GMT 2025