fd.c revision 1.52
1 /* $NetBSD: fd.c,v 1.52 1997/07/29 09:58:07 fair 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); 386 387 fdc->sc_state = DEVIDLE; 388 fdc->sc_istate = ISTATE_IDLE; 389 fdc->sc_flags |= FDC_EIS; 390 TAILQ_INIT(&fdc->sc_drives); 391 392 pri = ca->ca_ra.ra_intr[0].int_pri; 393 #ifdef FDC_C_HANDLER 394 fdc->sc_hih.ih_fun = (void *)fdchwintr; 395 fdc->sc_hih.ih_arg = fdc; 396 intr_establish(pri, &fdc->sc_hih); 397 #else 398 fdciop = &fdc->sc_io; 399 intr_fasttrap(pri, fdchwintr); 400 #endif 401 fdc->sc_sih.ih_fun = (void *)fdcswintr; 402 fdc->sc_sih.ih_arg = fdc; 403 intr_establish(PIL_FDSOFT, &fdc->sc_sih); 404 405 /* Assume a 82077 */ 406 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 407 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 408 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 409 410 code = '7'; 411 if (*fdc->sc_reg_dor == NE7_RQM) { 412 /* 413 * This hack from Chris Torek: apparently DOR really 414 * addresses MSR/DRS on a 82072. 415 * We used to rely on the VERSION command to tell the 416 * difference (which did not work). 417 */ 418 *fdc->sc_reg_dor = FDC_250KBPS; 419 if (*fdc->sc_reg_dor == NE7_RQM) 420 code = '2'; 421 } 422 if (code == '7') { 423 fdc->sc_flags |= FDC_82077; 424 } else { 425 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 426 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 427 fdc->sc_reg_dor = 0; 428 } 429 430 #ifdef FD_DEBUG 431 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 432 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 433 if (fdc_debug) 434 printf("[version cmd]"); 435 } 436 #endif 437 438 /* 439 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 440 * Note: CFG_EFIFO is active-low, initial threshold value: 8 441 */ 442 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 443 fdconf(fdc); 444 445 if (fdc->sc_flags & FDC_82077) { 446 /* Lock configuration across soft resets. */ 447 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 448 if (fdcresult(fdc) != 1) 449 printf(" CFGLOCK: unexpected response"); 450 } 451 452 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 453 454 printf(" pri %d, softpri %d: chip 8207%c\n", pri, PIL_FDSOFT, code); 455 456 /* 457 * Controller and drives are represented by one and the same 458 * Openprom node, so we can as well check for the floppy boots here. 459 */ 460 fa.fa_bootpath = 0; 461 if ((bp = ca->ca_ra.ra_bp) && strcmp(bp->name, OBP_FDNAME) == 0) { 462 463 switch (ca->ca_bustype) { 464 case BUS_MAIN: 465 /* 466 * We can get the bootpath in several different 467 * formats! The faked v1 bootpath looks like /fd@0,0. 468 * The v2 bootpath is either just /fd0, in which case 469 * `bp->val[0]' will have been set to -1, or /fd@x,y 470 * where <x,y> is the prom address specifier. 471 */ 472 if (((bp->val[0] == ca->ca_ra.ra_iospace) && 473 (bp->val[1] == (int)ca->ca_ra.ra_paddr)) || 474 475 ((bp->val[0] == -1) && /* v2: /fd0 */ 476 (bp->val[1] == 0)) || 477 478 ((bp->val[0] == 0) && /* v1: /fd@0,0 */ 479 (bp->val[1] == 0)) 480 ) 481 fa.fa_bootpath = bp; 482 break; 483 484 case BUS_OBIO: 485 /* 486 * floppy controller on obio (such as on the sun4m), 487 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 488 * We use "slot, offset" to determine if this is the 489 * right one. 490 */ 491 if ((bp->val[0] == ca->ca_slot) && 492 (bp->val[1] == ca->ca_offset)) 493 fa.fa_bootpath = bp; 494 break; 495 } 496 497 } 498 499 /* physical limit: four drives per controller. */ 500 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 501 fa.fa_deftype = NULL; /* unknown */ 502 fa.fa_deftype = &fd_types[0]; /* XXX */ 503 (void)config_found(self, (void *)&fa, fdprint); 504 } 505 506 bootpath_store(1, NULL); 507 } 508 509 int 510 fdmatch(parent, match, aux) 511 struct device *parent; 512 struct cfdata *match; 513 void *aux; 514 { 515 struct fdc_softc *fdc = (void *)parent; 516 struct fdc_attach_args *fa = aux; 517 int drive = fa->fa_drive; 518 int n, ok; 519 520 if (drive > 0) 521 /* XXX - for now, punt on more than one drive */ 522 return (0); 523 524 if (fdc->sc_flags & FDC_82077) { 525 /* select drive and turn on motor */ 526 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 527 /* wait for motor to spin up */ 528 delay(250000); 529 } else { 530 auxregbisc(AUXIO4C_FDS, 0); 531 } 532 fdc->sc_nstat = 0; 533 out_fdc(fdc, NE7CMD_RECAL); 534 out_fdc(fdc, drive); 535 /* wait for recalibrate */ 536 for (n = 0; n < 10000; n++) { 537 delay(1000); 538 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 539 /* wait a bit longer till device *really* is ready */ 540 delay(100000); 541 if (out_fdc(fdc, NE7CMD_SENSEI)) 542 break; 543 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 544 /* 545 * Got `invalid command'; we interpret it 546 * to mean that the re-calibrate hasn't in 547 * fact finished yet 548 */ 549 continue; 550 break; 551 } 552 } 553 n = fdc->sc_nstat; 554 #ifdef FD_DEBUG 555 if (fdc_debug) { 556 int i; 557 printf("fdprobe: %d stati:", n); 558 for (i = 0; i < n; i++) 559 printf(" 0x%x", fdc->sc_status[i]); 560 printf("\n"); 561 } 562 #endif 563 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 564 565 /* turn off motor */ 566 if (fdc->sc_flags & FDC_82077) { 567 /* deselect drive and turn motor off */ 568 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 569 } else { 570 auxregbisc(0, AUXIO4C_FDS); 571 } 572 573 return (ok); 574 } 575 576 /* 577 * Controller is working, and drive responded. Attach it. 578 */ 579 void 580 fdattach(parent, self, aux) 581 struct device *parent, *self; 582 void *aux; 583 { 584 struct fdc_softc *fdc = (void *)parent; 585 struct fd_softc *fd = (void *)self; 586 struct fdc_attach_args *fa = aux; 587 struct fd_type *type = fa->fa_deftype; 588 int drive = fa->fa_drive; 589 590 /* XXX Allow `flags' to override device type? */ 591 592 if (type) 593 printf(": %s %d cyl, %d head, %d sec\n", type->name, 594 type->cylinders, type->heads, type->sectrac); 595 else 596 printf(": density unknown\n"); 597 598 fd->sc_cylin = -1; 599 fd->sc_drive = drive; 600 fd->sc_deftype = type; 601 fdc->sc_fd[drive] = fd; 602 603 out_fdc(fdc, NE7CMD_SPECIFY); 604 out_fdc(fdc, type->steprate); 605 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 606 607 /* 608 * Initialize and attach the disk structure. 609 */ 610 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 611 fd->sc_dk.dk_driver = &fddkdriver; 612 disk_attach(&fd->sc_dk); 613 614 /* 615 * We're told if we're the boot device in fdcattach(). 616 */ 617 if (fa->fa_bootpath) 618 fa->fa_bootpath->dev = &fd->sc_dv; 619 620 /* 621 * Establish a mountroot_hook anyway in case we booted 622 * with RB_ASKNAME and get selected as the boot device. 623 */ 624 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 625 626 /* Make sure the drive motor gets turned off at shutdown time. */ 627 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 628 629 /* XXX Need to do some more fiddling with sc_dk. */ 630 dk_establish(&fd->sc_dk, &fd->sc_dv); 631 } 632 633 __inline struct fd_type * 634 fd_dev_to_type(fd, dev) 635 struct fd_softc *fd; 636 dev_t dev; 637 { 638 int type = FDTYPE(dev); 639 640 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 641 return (NULL); 642 return (type ? &fd_types[type - 1] : fd->sc_deftype); 643 } 644 645 void 646 fdstrategy(bp) 647 register struct buf *bp; /* IO operation to perform */ 648 { 649 struct fd_softc *fd; 650 int unit = FDUNIT(bp->b_dev); 651 int sz; 652 int s; 653 654 /* Valid unit, controller, and request? */ 655 if (unit >= fd_cd.cd_ndevs || 656 (fd = fd_cd.cd_devs[unit]) == 0 || 657 bp->b_blkno < 0 || 658 ((bp->b_bcount % FDC_BSIZE) != 0 && 659 (bp->b_flags & B_FORMAT) == 0)) { 660 bp->b_error = EINVAL; 661 goto bad; 662 } 663 664 /* If it's a null transfer, return immediately. */ 665 if (bp->b_bcount == 0) 666 goto done; 667 668 sz = howmany(bp->b_bcount, FDC_BSIZE); 669 670 if (bp->b_blkno + sz > fd->sc_type->size) { 671 sz = fd->sc_type->size - bp->b_blkno; 672 if (sz == 0) { 673 /* If exactly at end of disk, return EOF. */ 674 bp->b_resid = bp->b_bcount; 675 goto done; 676 } 677 if (sz < 0) { 678 /* If past end of disk, return EINVAL. */ 679 bp->b_error = EINVAL; 680 goto bad; 681 } 682 /* Otherwise, truncate request. */ 683 bp->b_bcount = sz << DEV_BSHIFT; 684 } 685 686 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 687 688 #ifdef FD_DEBUG 689 if (fdc_debug > 1) 690 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 691 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 692 #endif 693 694 /* Queue transfer on drive, activate drive and controller if idle. */ 695 s = splbio(); 696 disksort(&fd->sc_q, bp); 697 untimeout(fd_motor_off, fd); /* a good idea */ 698 if (!fd->sc_q.b_active) 699 fdstart(fd); 700 #ifdef DIAGNOSTIC 701 else { 702 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 703 if (fdc->sc_state == DEVIDLE) { 704 printf("fdstrategy: controller inactive\n"); 705 fdcstart(fdc); 706 } 707 } 708 #endif 709 splx(s); 710 return; 711 712 bad: 713 bp->b_flags |= B_ERROR; 714 done: 715 /* Toss transfer; we're done early. */ 716 biodone(bp); 717 } 718 719 void 720 fdstart(fd) 721 struct fd_softc *fd; 722 { 723 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 724 int active = fdc->sc_drives.tqh_first != 0; 725 726 /* Link into controller queue. */ 727 fd->sc_q.b_active = 1; 728 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 729 730 /* If controller not already active, start it. */ 731 if (!active) 732 fdcstart(fdc); 733 } 734 735 void 736 fdfinish(fd, bp) 737 struct fd_softc *fd; 738 struct buf *bp; 739 { 740 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 741 742 /* 743 * Move this drive to the end of the queue to give others a `fair' 744 * chance. We only force a switch if N operations are completed while 745 * another drive is waiting to be serviced, since there is a long motor 746 * startup delay whenever we switch. 747 */ 748 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 749 fd->sc_ops = 0; 750 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 751 if (bp->b_actf) { 752 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 753 } else 754 fd->sc_q.b_active = 0; 755 } 756 bp->b_resid = fd->sc_bcount; 757 fd->sc_skip = 0; 758 fd->sc_q.b_actf = bp->b_actf; 759 760 biodone(bp); 761 /* turn off motor 5s from now */ 762 timeout(fd_motor_off, fd, 5 * hz); 763 fdc->sc_state = DEVIDLE; 764 } 765 766 void 767 fdc_reset(fdc) 768 struct fdc_softc *fdc; 769 { 770 if (fdc->sc_flags & FDC_82077) { 771 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 772 } 773 774 *fdc->sc_reg_drs = DRS_RESET; 775 delay(10); 776 *fdc->sc_reg_drs = 0; 777 778 if (fdc->sc_flags & FDC_82077) { 779 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 780 } 781 #ifdef FD_DEBUG 782 if (fdc_debug) 783 printf("fdc reset\n"); 784 #endif 785 } 786 787 void 788 fd_set_motor(fdc) 789 struct fdc_softc *fdc; 790 { 791 struct fd_softc *fd; 792 u_char status; 793 int n; 794 795 if (fdc->sc_flags & FDC_82077) { 796 status = FDO_FRST | FDO_FDMAEN; 797 if ((fd = fdc->sc_drives.tqh_first) != NULL) 798 status |= fd->sc_drive; 799 800 for (n = 0; n < 4; n++) 801 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 802 status |= FDO_MOEN(n); 803 *fdc->sc_reg_dor = status; 804 } else { 805 int on = 0; 806 807 for (n = 0; n < 4; n++) 808 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 809 on = 1; 810 if (on) { 811 auxregbisc(AUXIO4C_FDS, 0); 812 } else { 813 auxregbisc(0, AUXIO4C_FDS); 814 } 815 } 816 } 817 818 void 819 fd_motor_off(arg) 820 void *arg; 821 { 822 struct fd_softc *fd = arg; 823 int s; 824 825 s = splbio(); 826 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 827 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 828 splx(s); 829 } 830 831 void 832 fd_motor_on(arg) 833 void *arg; 834 { 835 struct fd_softc *fd = arg; 836 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 837 int s; 838 839 s = splbio(); 840 fd->sc_flags &= ~FD_MOTOR_WAIT; 841 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 842 (void) fdcstate(fdc); 843 splx(s); 844 } 845 846 int 847 fdcresult(fdc) 848 struct fdc_softc *fdc; 849 { 850 u_char i; 851 int j = 100000, 852 n = 0; 853 854 for (; j; j--) { 855 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 856 if (i == NE7_RQM) 857 return (fdc->sc_nstat = n); 858 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 859 if (n >= sizeof(fdc->sc_status)) { 860 log(LOG_ERR, "fdcresult: overrun\n"); 861 return (-1); 862 } 863 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 864 } else 865 delay(10); 866 } 867 log(LOG_ERR, "fdcresult: timeout\n"); 868 return (fdc->sc_nstat = -1); 869 } 870 871 int 872 out_fdc(fdc, x) 873 struct fdc_softc *fdc; 874 u_char x; 875 { 876 int i = 100000; 877 878 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 879 delay(1); 880 if (i <= 0) 881 return (-1); 882 883 *fdc->sc_reg_fifo = x; 884 return (0); 885 } 886 887 int 888 fdopen(dev, flags, fmt, p) 889 dev_t dev; 890 int flags, fmt; 891 struct proc *p; 892 { 893 int unit, pmask; 894 struct fd_softc *fd; 895 struct fd_type *type; 896 897 unit = FDUNIT(dev); 898 if (unit >= fd_cd.cd_ndevs) 899 return (ENXIO); 900 fd = fd_cd.cd_devs[unit]; 901 if (fd == 0) 902 return (ENXIO); 903 type = fd_dev_to_type(fd, dev); 904 if (type == NULL) 905 return (ENXIO); 906 907 if ((fd->sc_flags & FD_OPEN) != 0 && 908 fd->sc_type != type) 909 return (EBUSY); 910 911 fd->sc_type = type; 912 fd->sc_cylin = -1; 913 fd->sc_flags |= FD_OPEN; 914 915 /* 916 * Only update the disklabel if we're not open anywhere else. 917 */ 918 if (fd->sc_dk.dk_openmask == 0) 919 fdgetdisklabel(dev); 920 921 pmask = (1 << DISKPART(dev)); 922 923 switch (fmt) { 924 case S_IFCHR: 925 fd->sc_dk.dk_copenmask |= pmask; 926 break; 927 928 case S_IFBLK: 929 fd->sc_dk.dk_bopenmask |= pmask; 930 break; 931 } 932 fd->sc_dk.dk_openmask = 933 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 934 935 return (0); 936 } 937 938 int 939 fdclose(dev, flags, fmt, p) 940 dev_t dev; 941 int flags, fmt; 942 struct proc *p; 943 { 944 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 945 int pmask = (1 << DISKPART(dev)); 946 947 fd->sc_flags &= ~FD_OPEN; 948 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 949 950 switch (fmt) { 951 case S_IFCHR: 952 fd->sc_dk.dk_copenmask &= ~pmask; 953 break; 954 955 case S_IFBLK: 956 fd->sc_dk.dk_bopenmask &= ~pmask; 957 break; 958 } 959 fd->sc_dk.dk_openmask = 960 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 961 962 return (0); 963 } 964 965 int 966 fdread(dev, uio, flag) 967 dev_t dev; 968 struct uio *uio; 969 int flag; 970 { 971 972 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 973 } 974 975 int 976 fdwrite(dev, uio, flag) 977 dev_t dev; 978 struct uio *uio; 979 int flag; 980 { 981 982 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 983 } 984 985 void 986 fdcstart(fdc) 987 struct fdc_softc *fdc; 988 { 989 990 #ifdef DIAGNOSTIC 991 /* only got here if controller's drive queue was inactive; should 992 be in idle state */ 993 if (fdc->sc_state != DEVIDLE) { 994 printf("fdcstart: not idle\n"); 995 return; 996 } 997 #endif 998 (void) fdcstate(fdc); 999 } 1000 1001 void 1002 fdcstatus(dv, n, s) 1003 struct device *dv; 1004 int n; 1005 char *s; 1006 { 1007 struct fdc_softc *fdc = (void *)dv->dv_parent; 1008 char bits[64]; 1009 #if 0 1010 /* 1011 * A 82072 seems to return <invalid command> on 1012 * gratuitous Sense Interrupt commands. 1013 */ 1014 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1015 out_fdc(fdc, NE7CMD_SENSEI); 1016 (void) fdcresult(fdc); 1017 n = 2; 1018 } 1019 #endif 1020 1021 /* Just print last status */ 1022 n = fdc->sc_nstat; 1023 1024 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1025 1026 switch (n) { 1027 case 0: 1028 printf("\n"); 1029 break; 1030 case 2: 1031 printf(" (st0 %s cyl %d)\n", 1032 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1033 bits, sizeof(bits)), fdc->sc_status[1]); 1034 break; 1035 case 7: 1036 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1037 NE7_ST0BITS, bits, sizeof(bits))); 1038 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1039 NE7_ST1BITS, bits, sizeof(bits))); 1040 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1041 NE7_ST2BITS, bits, sizeof(bits))); 1042 printf(" cyl %d head %d sec %d)\n", 1043 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1044 break; 1045 #ifdef DIAGNOSTIC 1046 default: 1047 printf(" fdcstatus: weird size: %d\n", n); 1048 break; 1049 #endif 1050 } 1051 } 1052 1053 void 1054 fdctimeout(arg) 1055 void *arg; 1056 { 1057 struct fdc_softc *fdc = arg; 1058 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1059 int s; 1060 1061 s = splbio(); 1062 fdcstatus(&fd->sc_dv, 0, "timeout"); 1063 1064 if (fd->sc_q.b_actf) 1065 fdc->sc_state++; 1066 else 1067 fdc->sc_state = DEVIDLE; 1068 1069 (void) fdcstate(fdc); 1070 splx(s); 1071 } 1072 1073 void 1074 fdcpseudointr(arg) 1075 void *arg; 1076 { 1077 struct fdc_softc *fdc = arg; 1078 int s; 1079 1080 /* Just ensure it has the right spl. */ 1081 s = splbio(); 1082 (void) fdcstate(fdc); 1083 splx(s); 1084 } 1085 1086 1087 #ifdef FDC_C_HANDLER 1088 /* 1089 * hardware interrupt entry point: must be converted to `fast' 1090 * (in-window) handler. 1091 */ 1092 int 1093 fdchwintr(fdc) 1094 struct fdc_softc *fdc; 1095 { 1096 1097 switch (fdc->sc_istate) { 1098 case ISTATE_IDLE: 1099 return (0); 1100 case ISTATE_SENSEI: 1101 out_fdc(fdc, NE7CMD_SENSEI); 1102 fdcresult(fdc); 1103 fdc->sc_istate = ISTATE_IDLE; 1104 FD_SET_SWINTR; 1105 return (1); 1106 case ISTATE_SPURIOUS: 1107 fdcresult(fdc); 1108 fdc->sc_istate = ISTATE_SPURIOUS; 1109 printf("fdc: stray hard interrupt... "); 1110 FD_SET_SWINTR; 1111 return (1); 1112 case ISTATE_DMA: 1113 break; 1114 default: 1115 printf("fdc: goofed ...\n"); 1116 return (1); 1117 } 1118 1119 for (;;) { 1120 register int msr; 1121 1122 msr = *fdc->sc_reg_msr; 1123 1124 if ((msr & NE7_RQM) == 0) 1125 break; 1126 1127 if ((msr & NE7_NDM) == 0) { 1128 fdcresult(fdc); 1129 fdc->sc_istate = ISTATE_IDLE; 1130 ienab_bis(IE_FDSOFT); 1131 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1132 break; 1133 } 1134 1135 if (msr & NE7_DIO) { 1136 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1137 } else { 1138 *fdc->sc_reg_fifo = *fdc->sc_data++; 1139 } 1140 if (--fdc->sc_tc == 0) { 1141 fdc->sc_istate = ISTATE_DONE; 1142 FTC_FLIP; 1143 fdcresult(fdc); 1144 FD_SET_SWINTR; 1145 break; 1146 } 1147 } 1148 return (1); 1149 } 1150 #endif 1151 1152 int 1153 fdcswintr(fdc) 1154 struct fdc_softc *fdc; 1155 { 1156 int s; 1157 1158 if (fdc->sc_istate != ISTATE_DONE) 1159 return (0); 1160 1161 fdc->sc_istate = ISTATE_IDLE; 1162 s = splbio(); 1163 fdcstate(fdc); 1164 splx(s); 1165 return (1); 1166 } 1167 1168 int 1169 fdcstate(fdc) 1170 struct fdc_softc *fdc; 1171 { 1172 #define st0 fdc->sc_status[0] 1173 #define st1 fdc->sc_status[1] 1174 #define cyl fdc->sc_status[1] 1175 #define OUT_FDC(fdc, c, s) \ 1176 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1177 1178 struct fd_softc *fd; 1179 struct buf *bp; 1180 int read, head, sec, nblks; 1181 struct fd_type *type; 1182 struct ne7_fd_formb *finfo = NULL; 1183 1184 1185 if (fdc->sc_istate != ISTATE_IDLE) { 1186 /* Trouble... */ 1187 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1188 fdc->sc_state, fdc->sc_istate); 1189 fdc->sc_istate = ISTATE_IDLE; 1190 if (fdc->sc_state == RESETCOMPLETE || 1191 fdc->sc_state == RESETTIMEDOUT) { 1192 panic("fdcintr: spurious interrupt can't be cleared"); 1193 } 1194 goto doreset; 1195 } 1196 1197 loop: 1198 /* Is there a drive for the controller to do a transfer with? */ 1199 fd = fdc->sc_drives.tqh_first; 1200 if (fd == NULL) { 1201 fdc->sc_state = DEVIDLE; 1202 return (0); 1203 } 1204 1205 /* Is there a transfer to this drive? If not, deactivate drive. */ 1206 bp = fd->sc_q.b_actf; 1207 if (bp == NULL) { 1208 fd->sc_ops = 0; 1209 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1210 fd->sc_q.b_active = 0; 1211 goto loop; 1212 } 1213 1214 if (bp->b_flags & B_FORMAT) 1215 finfo = (struct ne7_fd_formb *)bp->b_data; 1216 1217 switch (fdc->sc_state) { 1218 case DEVIDLE: 1219 fdc->sc_errors = 0; 1220 fd->sc_skip = 0; 1221 fd->sc_bcount = bp->b_bcount; 1222 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1223 untimeout(fd_motor_off, fd); 1224 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1225 fdc->sc_state = MOTORWAIT; 1226 return (1); 1227 } 1228 if ((fd->sc_flags & FD_MOTOR) == 0) { 1229 /* Turn on the motor, being careful about pairing. */ 1230 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1231 if (ofd && ofd->sc_flags & FD_MOTOR) { 1232 untimeout(fd_motor_off, ofd); 1233 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1234 } 1235 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1236 fd_set_motor(fdc); 1237 fdc->sc_state = MOTORWAIT; 1238 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1239 /* Allow .25s for motor to stabilize. */ 1240 timeout(fd_motor_on, fd, hz / 4); 1241 } else { 1242 fd->sc_flags &= ~FD_MOTOR_WAIT; 1243 goto loop; 1244 } 1245 return (1); 1246 } 1247 /* Make sure the right drive is selected. */ 1248 fd_set_motor(fdc); 1249 1250 /*FALLTHROUGH*/ 1251 case DOSEEK: 1252 doseek: 1253 if ((fdc->sc_flags & FDC_EIS) && 1254 (bp->b_flags & B_FORMAT) == 0) { 1255 fd->sc_cylin = bp->b_cylin; 1256 /* We use implied seek */ 1257 goto doio; 1258 } 1259 1260 if (fd->sc_cylin == bp->b_cylin) 1261 goto doio; 1262 1263 /* specify command */ 1264 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1265 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1266 /* XXX head load time == 6ms */ 1267 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1268 1269 fdc->sc_istate = ISTATE_SENSEI; 1270 /* seek function */ 1271 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1272 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1273 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1274 1275 fd->sc_cylin = -1; 1276 fdc->sc_state = SEEKWAIT; 1277 fdc->sc_nstat = 0; 1278 1279 fd->sc_dk.dk_seek++; 1280 disk_busy(&fd->sc_dk); 1281 1282 timeout(fdctimeout, fdc, 4 * hz); 1283 return (1); 1284 1285 case DOIO: 1286 doio: 1287 if (finfo != NULL) 1288 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1289 (char *)finfo; 1290 type = fd->sc_type; 1291 sec = fd->sc_blkno % type->seccyl; 1292 nblks = type->seccyl - sec; 1293 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1294 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1295 fd->sc_nblks = nblks; 1296 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1297 head = sec / type->sectrac; 1298 sec -= head * type->sectrac; 1299 #ifdef DIAGNOSTIC 1300 {int block; 1301 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1302 if (block != fd->sc_blkno) { 1303 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1304 #ifdef DDB 1305 Debugger(); 1306 #endif 1307 }} 1308 #endif 1309 read = bp->b_flags & B_READ; 1310 1311 /* Setup for pseudo DMA */ 1312 fdc->sc_data = bp->b_data + fd->sc_skip; 1313 fdc->sc_tc = fd->sc_nbytes; 1314 1315 *fdc->sc_reg_drs = type->rate; 1316 #ifdef FD_DEBUG 1317 if (fdc_debug > 1) 1318 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1319 read ? "read" : "write", fd->sc_drive, 1320 fd->sc_cylin, head, sec, nblks); 1321 #endif 1322 fdc->sc_state = IOCOMPLETE; 1323 fdc->sc_istate = ISTATE_DMA; 1324 fdc->sc_nstat = 0; 1325 if (finfo != NULL) { 1326 /* formatting */ 1327 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1328 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1329 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1330 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1331 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1332 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1333 } else { 1334 if (read) 1335 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1336 else 1337 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1338 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1339 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1340 OUT_FDC(fdc, head, IOTIMEDOUT); 1341 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1342 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1343 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1344 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1345 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1346 } 1347 1348 disk_busy(&fd->sc_dk); 1349 1350 /* allow 2 seconds for operation */ 1351 timeout(fdctimeout, fdc, 2 * hz); 1352 return (1); /* will return later */ 1353 1354 case SEEKWAIT: 1355 untimeout(fdctimeout, fdc); 1356 fdc->sc_state = SEEKCOMPLETE; 1357 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1358 /* allow 1/50 second for heads to settle */ 1359 timeout(fdcpseudointr, fdc, hz / 50); 1360 return (1); /* will return later */ 1361 } 1362 /*FALLTHROUGH*/ 1363 case SEEKCOMPLETE: 1364 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1365 1366 /* Make sure seek really happened. */ 1367 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1368 cyl != bp->b_cylin * fd->sc_type->step) { 1369 #ifdef FD_DEBUG 1370 if (fdc_debug) 1371 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1372 #endif 1373 fdcretry(fdc); 1374 goto loop; 1375 } 1376 fd->sc_cylin = bp->b_cylin; 1377 goto doio; 1378 1379 case IOTIMEDOUT: 1380 FTC_FLIP; 1381 (void)fdcresult(fdc); 1382 /*FALLTHROUGH*/ 1383 case SEEKTIMEDOUT: 1384 case RECALTIMEDOUT: 1385 case RESETTIMEDOUT: 1386 fdcretry(fdc); 1387 goto loop; 1388 1389 case IOCOMPLETE: /* IO DONE, post-analyze */ 1390 untimeout(fdctimeout, fdc); 1391 1392 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1393 1394 if (fdc->sc_nstat != 7 || st1 != 0 || 1395 ((st0 & 0xf8) != 0 && 1396 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1397 #ifdef FD_DEBUG 1398 if (fdc_debug) { 1399 fdcstatus(&fd->sc_dv, 7, 1400 bp->b_flags & B_READ 1401 ? "read failed" : "write failed"); 1402 printf("blkno %d nblks %d nstat %d tc %d\n", 1403 fd->sc_blkno, fd->sc_nblks, 1404 fdc->sc_nstat, fdc->sc_tc); 1405 } 1406 #endif 1407 if (fdc->sc_nstat == 7 && 1408 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1409 1410 /* 1411 * Silently retry overruns if no other 1412 * error bit is set. Adjust threshold. 1413 */ 1414 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1415 if (thr < 15) { 1416 thr++; 1417 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1418 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1419 #ifdef FD_DEBUG 1420 if (fdc_debug) 1421 printf("fdc: %d -> threshold\n", thr); 1422 #endif 1423 fdconf(fdc); 1424 fdc->sc_overruns = 0; 1425 } 1426 if (++fdc->sc_overruns < 3) { 1427 fdc->sc_state = DOIO; 1428 goto loop; 1429 } 1430 } 1431 fdcretry(fdc); 1432 goto loop; 1433 } 1434 if (fdc->sc_errors) { 1435 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1436 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1437 printf("\n"); 1438 fdc->sc_errors = 0; 1439 } else { 1440 if (--fdc->sc_overruns < -20) { 1441 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1442 if (thr > 0) { 1443 thr--; 1444 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1445 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1446 #ifdef FD_DEBUG 1447 if (fdc_debug) 1448 printf("fdc: %d -> threshold\n", thr); 1449 #endif 1450 fdconf(fdc); 1451 } 1452 fdc->sc_overruns = 0; 1453 } 1454 } 1455 fd->sc_blkno += fd->sc_nblks; 1456 fd->sc_skip += fd->sc_nbytes; 1457 fd->sc_bcount -= fd->sc_nbytes; 1458 if (finfo == NULL && fd->sc_bcount > 0) { 1459 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1460 goto doseek; 1461 } 1462 fdfinish(fd, bp); 1463 goto loop; 1464 1465 case DORESET: 1466 doreset: 1467 /* try a reset, keep motor on */ 1468 fd_set_motor(fdc); 1469 delay(100); 1470 fdc_reset(fdc); 1471 fdc->sc_nstat = 0; 1472 fdc->sc_istate = ISTATE_SENSEI; 1473 fdc->sc_state = RESETCOMPLETE; 1474 timeout(fdctimeout, fdc, hz / 2); 1475 return (1); /* will return later */ 1476 1477 case RESETCOMPLETE: 1478 untimeout(fdctimeout, fdc); 1479 fdconf(fdc); 1480 1481 /* fall through */ 1482 case DORECAL: 1483 fdc->sc_state = RECALWAIT; 1484 fdc->sc_istate = ISTATE_SENSEI; 1485 fdc->sc_nstat = 0; 1486 /* recalibrate function */ 1487 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1488 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1489 timeout(fdctimeout, fdc, 5 * hz); 1490 return (1); /* will return later */ 1491 1492 case RECALWAIT: 1493 untimeout(fdctimeout, fdc); 1494 fdc->sc_state = RECALCOMPLETE; 1495 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1496 /* allow 1/30 second for heads to settle */ 1497 timeout(fdcpseudointr, fdc, hz / 30); 1498 return (1); /* will return later */ 1499 } 1500 1501 case RECALCOMPLETE: 1502 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1503 #ifdef FD_DEBUG 1504 if (fdc_debug) 1505 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1506 #endif 1507 fdcretry(fdc); 1508 goto loop; 1509 } 1510 fd->sc_cylin = 0; 1511 goto doseek; 1512 1513 case MOTORWAIT: 1514 if (fd->sc_flags & FD_MOTOR_WAIT) 1515 return (1); /* time's not up yet */ 1516 goto doseek; 1517 1518 default: 1519 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1520 return (1); 1521 } 1522 #ifdef DIAGNOSTIC 1523 panic("fdcintr: impossible"); 1524 #endif 1525 #undef st0 1526 #undef st1 1527 #undef cyl 1528 } 1529 1530 void 1531 fdcretry(fdc) 1532 struct fdc_softc *fdc; 1533 { 1534 char bits[64]; 1535 struct fd_softc *fd; 1536 struct buf *bp; 1537 1538 fd = fdc->sc_drives.tqh_first; 1539 bp = fd->sc_q.b_actf; 1540 1541 fdc->sc_overruns = 0; 1542 if (fd->sc_opts & FDOPT_NORETRY) 1543 goto fail; 1544 1545 switch (fdc->sc_errors) { 1546 case 0: 1547 /* try again */ 1548 fdc->sc_state = 1549 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1550 break; 1551 1552 case 1: case 2: case 3: 1553 /* didn't work; try recalibrating */ 1554 fdc->sc_state = DORECAL; 1555 break; 1556 1557 case 4: 1558 /* still no go; reset the bastard */ 1559 fdc->sc_state = DORESET; 1560 break; 1561 1562 default: 1563 fail: 1564 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1565 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1566 fd->sc_skip / FDC_BSIZE, 1567 (struct disklabel *)NULL); 1568 1569 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1570 NE7_ST0BITS, bits, sizeof(bits))); 1571 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1572 NE7_ST1BITS, bits, sizeof(bits))); 1573 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1574 NE7_ST2BITS, bits, sizeof(bits))); 1575 printf(" cyl %d head %d sec %d)\n", 1576 fdc->sc_status[3], fdc->sc_status[4], 1577 fdc->sc_status[5]); 1578 } 1579 1580 bp->b_flags |= B_ERROR; 1581 bp->b_error = EIO; 1582 fdfinish(fd, bp); 1583 } 1584 fdc->sc_errors++; 1585 } 1586 1587 int 1588 fdsize(dev) 1589 dev_t dev; 1590 { 1591 1592 /* Swapping to floppies would not make sense. */ 1593 return (-1); 1594 } 1595 1596 int 1597 fddump(dev, blkno, va, size) 1598 dev_t dev; 1599 daddr_t blkno; 1600 caddr_t va; 1601 size_t size; 1602 { 1603 1604 /* Not implemented. */ 1605 return (EINVAL); 1606 } 1607 1608 int 1609 fdioctl(dev, cmd, addr, flag, p) 1610 dev_t dev; 1611 u_long cmd; 1612 caddr_t addr; 1613 int flag; 1614 struct proc *p; 1615 { 1616 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1617 struct fdformat_parms *form_parms; 1618 struct fdformat_cmd *form_cmd; 1619 struct ne7_fd_formb fd_formb; 1620 int il[FD_MAX_NSEC + 1]; 1621 int i, j; 1622 int error; 1623 1624 switch (cmd) { 1625 case DIOCGDINFO: 1626 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1627 return 0; 1628 1629 case DIOCWLABEL: 1630 if ((flag & FWRITE) == 0) 1631 return EBADF; 1632 /* XXX do something */ 1633 return (0); 1634 1635 case DIOCWDINFO: 1636 if ((flag & FWRITE) == 0) 1637 return (EBADF); 1638 1639 error = setdisklabel(fd->sc_dk.dk_label, 1640 (struct disklabel *)addr, 0, 1641 fd->sc_dk.dk_cpulabel); 1642 if (error) 1643 return (error); 1644 1645 error = writedisklabel(dev, fdstrategy, 1646 fd->sc_dk.dk_label, 1647 fd->sc_dk.dk_cpulabel); 1648 return (error); 1649 1650 case DIOCLOCK: 1651 /* 1652 * Nothing to do here, really. 1653 */ 1654 return (0); 1655 1656 case DIOCEJECT: 1657 fd_do_eject(fd); 1658 return (0); 1659 1660 case FDIOCGETFORMAT: 1661 form_parms = (struct fdformat_parms *)addr; 1662 form_parms->fdformat_version = FDFORMAT_VERSION; 1663 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1664 form_parms->ncyl = fd->sc_type->cylinders; 1665 form_parms->nspt = fd->sc_type->sectrac; 1666 form_parms->ntrk = fd->sc_type->heads; 1667 form_parms->stepspercyl = fd->sc_type->step; 1668 form_parms->gaplen = fd->sc_type->gap2; 1669 form_parms->fillbyte = fd->sc_type->fillbyte; 1670 form_parms->interleave = fd->sc_type->interleave; 1671 switch (fd->sc_type->rate) { 1672 case FDC_500KBPS: 1673 form_parms->xfer_rate = 500 * 1024; 1674 break; 1675 case FDC_300KBPS: 1676 form_parms->xfer_rate = 300 * 1024; 1677 break; 1678 case FDC_250KBPS: 1679 form_parms->xfer_rate = 250 * 1024; 1680 break; 1681 default: 1682 return (EINVAL); 1683 } 1684 return (0); 1685 1686 case FDIOCSETFORMAT: 1687 if ((flag & FWRITE) == 0) 1688 return (EBADF); /* must be opened for writing */ 1689 1690 form_parms = (struct fdformat_parms *)addr; 1691 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1692 return (EINVAL);/* wrong version of formatting prog */ 1693 1694 i = form_parms->nbps >> 7; 1695 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1696 i & ~(1 << (ffs(i)-1))) 1697 /* not a power-of-two multiple of 128 */ 1698 return (EINVAL); 1699 1700 switch (form_parms->xfer_rate) { 1701 case 500 * 1024: 1702 fd->sc_type->rate = FDC_500KBPS; 1703 break; 1704 case 300 * 1024: 1705 fd->sc_type->rate = FDC_300KBPS; 1706 break; 1707 case 250 * 1024: 1708 fd->sc_type->rate = FDC_250KBPS; 1709 break; 1710 default: 1711 return (EINVAL); 1712 } 1713 1714 if (form_parms->nspt > FD_MAX_NSEC || 1715 form_parms->fillbyte > 0xff || 1716 form_parms->interleave > 0xff) 1717 return EINVAL; 1718 fd->sc_type->sectrac = form_parms->nspt; 1719 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1720 return EINVAL; 1721 fd->sc_type->heads = form_parms->ntrk; 1722 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1723 fd->sc_type->secsize = ffs(i)-1; 1724 fd->sc_type->gap2 = form_parms->gaplen; 1725 fd->sc_type->cylinders = form_parms->ncyl; 1726 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1727 form_parms->nbps / DEV_BSIZE; 1728 fd->sc_type->step = form_parms->stepspercyl; 1729 fd->sc_type->fillbyte = form_parms->fillbyte; 1730 fd->sc_type->interleave = form_parms->interleave; 1731 return (0); 1732 1733 case FDIOCFORMAT_TRACK: 1734 if((flag & FWRITE) == 0) 1735 /* must be opened for writing */ 1736 return (EBADF); 1737 form_cmd = (struct fdformat_cmd *)addr; 1738 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1739 /* wrong version of formatting prog */ 1740 return (EINVAL); 1741 1742 if (form_cmd->head >= fd->sc_type->heads || 1743 form_cmd->cylinder >= fd->sc_type->cylinders) { 1744 return (EINVAL); 1745 } 1746 1747 fd_formb.head = form_cmd->head; 1748 fd_formb.cyl = form_cmd->cylinder; 1749 fd_formb.transfer_rate = fd->sc_type->rate; 1750 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1751 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1752 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1753 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1754 1755 bzero(il, sizeof il); 1756 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1757 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1758 j++; 1759 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1760 j += fd->sc_type->interleave; 1761 } 1762 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1763 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1764 fd_formb.fd_formb_headno(i) = form_cmd->head; 1765 fd_formb.fd_formb_secno(i) = il[i+1]; 1766 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1767 } 1768 1769 return fdformat(dev, &fd_formb, p); 1770 1771 case FDIOCGETOPTS: /* get drive options */ 1772 *(int *)addr = fd->sc_opts; 1773 return (0); 1774 1775 case FDIOCSETOPTS: /* set drive options */ 1776 fd->sc_opts = *(int *)addr; 1777 return (0); 1778 1779 #ifdef DEBUG 1780 case _IO('f', 100): 1781 { 1782 int i; 1783 struct fdc_softc *fdc = (struct fdc_softc *) 1784 fd->sc_dv.dv_parent; 1785 1786 out_fdc(fdc, NE7CMD_DUMPREG); 1787 fdcresult(fdc); 1788 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1789 for (i = 0; i < fdc->sc_nstat; i++) 1790 printf(" 0x%x", fdc->sc_status[i]); 1791 printf(">\n"); 1792 } 1793 1794 return (0); 1795 case _IOW('f', 101, int): 1796 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1797 ~CFG_THRHLD_MASK; 1798 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1799 (*(int *)addr & CFG_THRHLD_MASK); 1800 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1801 return (0); 1802 case _IO('f', 102): 1803 { 1804 int i; 1805 struct fdc_softc *fdc = (struct fdc_softc *) 1806 fd->sc_dv.dv_parent; 1807 out_fdc(fdc, NE7CMD_SENSEI); 1808 fdcresult(fdc); 1809 printf("sensei(%d regs): <", fdc->sc_nstat); 1810 for (i=0; i< fdc->sc_nstat; i++) 1811 printf(" 0x%x", fdc->sc_status[i]); 1812 } 1813 printf(">\n"); 1814 return (0); 1815 #endif 1816 default: 1817 return (ENOTTY); 1818 } 1819 1820 #ifdef DIAGNOSTIC 1821 panic("fdioctl: impossible"); 1822 #endif 1823 } 1824 1825 int 1826 fdformat(dev, finfo, p) 1827 dev_t dev; 1828 struct ne7_fd_formb *finfo; 1829 struct proc *p; 1830 { 1831 int rv = 0, s; 1832 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1833 struct fd_type *type = fd->sc_type; 1834 struct buf *bp; 1835 1836 /* set up a buffer header for fdstrategy() */ 1837 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1838 if (bp == 0) 1839 return (ENOBUFS); 1840 1841 PHOLD(p); 1842 bzero((void *)bp, sizeof(struct buf)); 1843 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1844 bp->b_proc = p; 1845 bp->b_dev = dev; 1846 1847 /* 1848 * Calculate a fake blkno, so fdstrategy() would initiate a 1849 * seek to the requested cylinder. 1850 */ 1851 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1852 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1853 1854 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1855 bp->b_data = (caddr_t)finfo; 1856 1857 #ifdef FD_DEBUG 1858 if (fdc_debug) 1859 printf("fdformat: blkno 0x%x count %ld\n", 1860 bp->b_blkno, bp->b_bcount); 1861 #endif 1862 1863 /* now do the format */ 1864 fdstrategy(bp); 1865 1866 /* ...and wait for it to complete */ 1867 s = splbio(); 1868 while (!(bp->b_flags & B_DONE)) { 1869 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1870 if (rv == EWOULDBLOCK) 1871 break; 1872 } 1873 splx(s); 1874 1875 if (rv == EWOULDBLOCK) { 1876 /* timed out */ 1877 rv = EIO; 1878 biodone(bp); 1879 } 1880 if (bp->b_flags & B_ERROR) { 1881 rv = bp->b_error; 1882 } 1883 PRELE(p); 1884 free(bp, M_TEMP); 1885 return (rv); 1886 } 1887 1888 void 1889 fdgetdisklabel(dev) 1890 dev_t dev; 1891 { 1892 int unit = FDUNIT(dev), i; 1893 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1894 struct disklabel *lp = fd->sc_dk.dk_label; 1895 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1896 1897 bzero(lp, sizeof(struct disklabel)); 1898 bzero(lp, sizeof(struct cpu_disklabel)); 1899 1900 lp->d_type = DTYPE_FLOPPY; 1901 lp->d_secsize = FDC_BSIZE; 1902 lp->d_secpercyl = fd->sc_type->seccyl; 1903 lp->d_nsectors = fd->sc_type->sectrac; 1904 lp->d_ncylinders = fd->sc_type->cylinders; 1905 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1906 lp->d_rpm = 3600; /* XXX like it matters... */ 1907 1908 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1909 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1910 lp->d_interleave = 1; 1911 1912 lp->d_partitions[RAW_PART].p_offset = 0; 1913 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1914 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1915 lp->d_npartitions = RAW_PART + 1; 1916 1917 lp->d_magic = DISKMAGIC; 1918 lp->d_magic2 = DISKMAGIC; 1919 lp->d_checksum = dkcksum(lp); 1920 1921 /* 1922 * Call the generic disklabel extraction routine. If there's 1923 * not a label there, fake it. 1924 */ 1925 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1926 strncpy(lp->d_packname, "default label", 1927 sizeof(lp->d_packname)); 1928 /* 1929 * Reset the partition info; it might have gotten 1930 * trashed in readdisklabel(). 1931 * 1932 * XXX Why do we have to do this? readdisklabel() 1933 * should be safe... 1934 */ 1935 for (i = 0; i < MAXPARTITIONS; ++i) { 1936 lp->d_partitions[i].p_offset = 0; 1937 if (i == RAW_PART) { 1938 lp->d_partitions[i].p_size = 1939 lp->d_secpercyl * lp->d_ncylinders; 1940 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1941 } else { 1942 lp->d_partitions[i].p_size = 0; 1943 lp->d_partitions[i].p_fstype = FS_UNUSED; 1944 } 1945 } 1946 lp->d_npartitions = RAW_PART + 1; 1947 } 1948 } 1949 1950 void 1951 fd_do_eject(fd) 1952 struct fd_softc *fd; 1953 { 1954 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1955 1956 if (CPU_ISSUN4C) { 1957 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 1958 delay(10); 1959 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 1960 return; 1961 } 1962 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 1963 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 1964 *fdc->sc_reg_dor = dor | FDO_EJ; 1965 delay(10); 1966 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 1967 return; 1968 } 1969 } 1970 1971 #ifdef MEMORY_DISK_HOOKS 1972 int fd_read_md_image __P((size_t *, caddr_t *)); 1973 #endif 1974 1975 /* ARGSUSED */ 1976 void 1977 fd_mountroot_hook(dev) 1978 struct device *dev; 1979 { 1980 int c; 1981 1982 fd_do_eject((struct fd_softc *)dev); 1983 printf("Insert filesystem floppy and press return."); 1984 for (;;) { 1985 c = cngetc(); 1986 if ((c == '\r') || (c == '\n')) { 1987 printf("\n"); 1988 break; 1989 } 1990 } 1991 #ifdef MEMORY_DISK_HOOKS 1992 { 1993 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1994 md_read_image = fd_read_md_image; 1995 } 1996 #endif 1997 } 1998 1999 #ifdef MEMORY_DISK_HOOKS 2000 2001 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2002 2003 int 2004 fd_read_md_image(sizep, addrp) 2005 size_t *sizep; 2006 caddr_t *addrp; 2007 { 2008 struct buf buf, *bp = &buf; 2009 dev_t dev; 2010 off_t offset; 2011 caddr_t addr; 2012 2013 dev = makedev(54,0); /* XXX */ 2014 2015 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2016 *addrp = addr; 2017 2018 if (fdopen(dev, 0, S_IFCHR, NULL)) 2019 panic("fd: mountroot: fdopen"); 2020 2021 offset = 0; 2022 2023 for (;;) { 2024 bp->b_dev = dev; 2025 bp->b_error = 0; 2026 bp->b_resid = 0; 2027 bp->b_proc = NULL; 2028 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2029 bp->b_blkno = btodb(offset); 2030 bp->b_bcount = DEV_BSIZE; 2031 bp->b_data = addr; 2032 fdstrategy(bp); 2033 while ((bp->b_flags & B_DONE) == 0) { 2034 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2035 } 2036 if (bp->b_error) 2037 panic("fd: mountroot: fdread error %d", bp->b_error); 2038 2039 if (bp->b_resid != 0) 2040 break; 2041 2042 addr += DEV_BSIZE; 2043 offset += DEV_BSIZE; 2044 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2045 break; 2046 } 2047 (void)fdclose(dev, 0, S_IFCHR, NULL); 2048 *sizep = offset; 2049 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2050 return (0); 2051 } 2052 #endif 2053
Indexes created Fri Oct 03 02:09:57 GMT 2025