fd.c revision 1.69
1 /* $NetBSD: fd.c,v 1.69 2000/01/11 12:59:45 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles M. 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 "opt_ddb.h" 44 #include "opt_md.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/file.h> 50 #include <sys/ioctl.h> 51 #include <sys/device.h> 52 #include <sys/disklabel.h> 53 #include <sys/dkstat.h> 54 #include <sys/disk.h> 55 #include <sys/fdio.h> 56 #include <sys/buf.h> 57 #include <sys/malloc.h> 58 #include <sys/proc.h> 59 #include <sys/uio.h> 60 #include <sys/stat.h> 61 #include <sys/syslog.h> 62 #include <sys/queue.h> 63 #include <sys/conf.h> 64 65 #include <dev/cons.h> 66 67 #include <vm/vm.h> 68 69 #include <uvm/uvm_extern.h> 70 71 #include <machine/cpu.h> 72 #include <machine/autoconf.h> 73 #include <machine/conf.h> 74 75 #include <sparc/sparc/auxreg.h> 76 #include <sparc/dev/fdreg.h> 77 #include <sparc/dev/fdvar.h> 78 79 #define FDUNIT(dev) (minor(dev) / 8) 80 #define FDTYPE(dev) (minor(dev) % 8) 81 82 /* XXX misuse a flag to identify format operation */ 83 #define B_FORMAT B_XXX 84 #define b_cylin b_resid 85 86 #define FD_DEBUG 87 #ifdef FD_DEBUG 88 int fdc_debug = 0; 89 #endif 90 91 enum fdc_state { 92 DEVIDLE = 0, 93 MOTORWAIT, 94 DOSEEK, 95 SEEKWAIT, 96 SEEKTIMEDOUT, 97 SEEKCOMPLETE, 98 DOIO, 99 IOCOMPLETE, 100 IOTIMEDOUT, 101 DORESET, 102 RESETCOMPLETE, 103 RESETTIMEDOUT, 104 DORECAL, 105 RECALWAIT, 106 RECALTIMEDOUT, 107 RECALCOMPLETE, 108 }; 109 110 /* software state, per controller */ 111 struct fdc_softc { 112 struct device sc_dev; /* boilerplate */ 113 bus_space_tag_t sc_bustag; 114 caddr_t sc_reg; 115 struct fd_softc *sc_fd[4]; /* pointers to children */ 116 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 117 enum fdc_state sc_state; 118 int sc_flags; 119 #define FDC_82077 0x01 120 #define FDC_NEEDHEADSETTLE 0x02 121 #define FDC_EIS 0x04 122 int sc_errors; /* number of retries so far */ 123 int sc_overruns; /* number of DMA overruns */ 124 int sc_cfg; /* current configuration */ 125 struct fdcio sc_io; 126 #define sc_reg_msr sc_io.fdcio_reg_msr 127 #define sc_reg_fifo sc_io.fdcio_reg_fifo 128 #define sc_reg_dor sc_io.fdcio_reg_dor 129 #define sc_reg_drs sc_io.fdcio_reg_msr 130 #define sc_istate sc_io.fdcio_istate 131 #define sc_data sc_io.fdcio_data 132 #define sc_tc sc_io.fdcio_tc 133 #define sc_nstat sc_io.fdcio_nstat 134 #define sc_status sc_io.fdcio_status 135 #define sc_intrcnt sc_io.fdcio_intrcnt 136 }; 137 138 #ifndef FDC_C_HANDLER 139 extern struct fdcio *fdciop; 140 #endif 141 142 /* controller driver configuration */ 143 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 144 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 145 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 146 void fdcattach_obio __P((struct device *, struct device *, void *)); 147 148 void fdcattach __P((struct fdc_softc *, int)); 149 150 struct cfattach fdc_mainbus_ca = { 151 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 152 }; 153 struct cfattach fdc_obio_ca = { 154 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 155 }; 156 157 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 158 159 /* 160 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 161 * we tell them apart. 162 */ 163 struct fd_type { 164 int sectrac; /* sectors per track */ 165 int heads; /* number of heads */ 166 int seccyl; /* sectors per cylinder */ 167 int secsize; /* size code for sectors */ 168 int datalen; /* data len when secsize = 0 */ 169 int steprate; /* step rate and head unload time */ 170 int gap1; /* gap len between sectors */ 171 int gap2; /* formatting gap */ 172 int cylinders; /* total num of cylinders */ 173 int size; /* size of disk in sectors */ 174 int step; /* steps per cylinder */ 175 int rate; /* transfer speed code */ 176 int fillbyte; /* format fill byte */ 177 int interleave; /* interleave factor (formatting) */ 178 char *name; 179 }; 180 181 /* The order of entries in the following table is important -- BEWARE! */ 182 struct fd_type fd_types[] = { 183 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 184 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 185 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 186 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 187 }; 188 189 /* software state, per disk (with up to 4 disks per ctlr) */ 190 struct fd_softc { 191 struct device sc_dv; /* generic device info */ 192 struct disk sc_dk; /* generic disk info */ 193 194 struct fd_type *sc_deftype; /* default type descriptor */ 195 struct fd_type *sc_type; /* current type descriptor */ 196 197 daddr_t sc_blkno; /* starting block number */ 198 int sc_bcount; /* byte count left */ 199 int sc_skip; /* bytes already transferred */ 200 int sc_nblks; /* number of blocks currently tranferring */ 201 int sc_nbytes; /* number of bytes currently tranferring */ 202 203 int sc_drive; /* physical unit number */ 204 int sc_flags; 205 #define FD_OPEN 0x01 /* it's open */ 206 #define FD_MOTOR 0x02 /* motor should be on */ 207 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 208 int sc_cylin; /* where we think the head is */ 209 int sc_opts; /* user-set options */ 210 211 void *sc_sdhook; /* shutdownhook cookie */ 212 213 TAILQ_ENTRY(fd_softc) sc_drivechain; 214 int sc_ops; /* I/O ops since last switch */ 215 struct buf sc_q; /* head of buf chain */ 216 }; 217 218 /* floppy driver configuration */ 219 int fdmatch __P((struct device *, struct cfdata *, void *)); 220 void fdattach __P((struct device *, struct device *, void *)); 221 222 struct cfattach fd_ca = { 223 sizeof(struct fd_softc), fdmatch, fdattach 224 }; 225 226 extern struct cfdriver fd_cd; 227 228 void fdgetdisklabel __P((dev_t)); 229 int fd_get_parms __P((struct fd_softc *)); 230 void fdstrategy __P((struct buf *)); 231 void fdstart __P((struct fd_softc *)); 232 int fdprint __P((void *, const char *)); 233 234 struct dkdriver fddkdriver = { fdstrategy }; 235 236 struct fd_type *fd_nvtotype __P((char *, int, int)); 237 void fd_set_motor __P((struct fdc_softc *fdc)); 238 void fd_motor_off __P((void *arg)); 239 void fd_motor_on __P((void *arg)); 240 int fdcresult __P((struct fdc_softc *fdc)); 241 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 242 void fdcstart __P((struct fdc_softc *fdc)); 243 void fdcstatus __P((struct device *dv, int n, char *s)); 244 void fdc_reset __P((struct fdc_softc *fdc)); 245 void fdctimeout __P((void *arg)); 246 void fdcpseudointr __P((void *arg)); 247 #ifdef FDC_C_HANDLER 248 int fdchwintr __P((void *)); 249 #else 250 void fdchwintr __P((void)); 251 #endif 252 int fdcswintr __P((void *)); 253 int fdcstate __P((struct fdc_softc *)); 254 void fdcretry __P((struct fdc_softc *fdc)); 255 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 256 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 257 void fd_do_eject __P((struct fd_softc *)); 258 void fd_mountroot_hook __P((struct device *)); 259 static void fdconf __P((struct fdc_softc *)); 260 261 #if PIL_FDSOFT == 4 262 #define IE_FDSOFT IE_L4 263 #else 264 #error 4 265 #endif 266 267 #ifdef FDC_C_HANDLER 268 #if defined(SUN4M) 269 #define FD_SET_SWINTR do { \ 270 if (CPU_ISSUN4M) \ 271 raise(0, PIL_FDSOFT); \ 272 else \ 273 ienab_bis(IE_L4); \ 274 } while(0) 275 #else 276 #define AUDIO_SET_SWINTR ienab_bis(IE_FDSOFT) 277 #endif /* defined(SUN4M) */ 278 #endif /* FDC_C_HANDLER */ 279 280 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 281 282 int 283 fdcmatch_mainbus(parent, match, aux) 284 struct device *parent; 285 struct cfdata *match; 286 void *aux; 287 { 288 struct mainbus_attach_args *ma = aux; 289 290 /* 291 * Floppy controller is on mainbus on sun4c. 292 */ 293 if (!CPU_ISSUN4C) 294 return (0); 295 296 /* sun4c PROMs call the controller "fd" */ 297 if (strcmp("fd", ma->ma_name) != 0) 298 return (0); 299 300 return (bus_space_probe(ma->ma_bustag, 301 ma->ma_iospace, 302 ma->ma_paddr, 303 1, /* probe size */ 304 0, /* offset */ 305 0, /* flags */ 306 NULL, NULL)); 307 } 308 309 int 310 fdcmatch_obio(parent, match, aux) 311 struct device *parent; 312 struct cfdata *match; 313 void *aux; 314 { 315 union obio_attach_args *uoba = aux; 316 struct sbus_attach_args *sa; 317 318 /* 319 * Floppy controller is on obio on sun4m. 320 */ 321 if (uoba->uoba_isobio4 != 0) 322 return (0); 323 324 sa = &uoba->uoba_sbus; 325 326 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 327 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 328 return (0); 329 330 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 331 1, /* probe size */ 332 0, /* offset */ 333 0, /* flags */ 334 NULL, NULL)); 335 } 336 337 /* 338 * Arguments passed between fdcattach and fdprobe. 339 */ 340 struct fdc_attach_args { 341 int fa_drive; 342 struct fd_type *fa_deftype; 343 }; 344 345 /* 346 * Print the location of a disk drive (called just before attaching the 347 * the drive). If `fdc' is not NULL, the drive was found but was not 348 * in the system config file; print the drive name as well. 349 * Return QUIET (config_find ignores this if the device was configured) to 350 * avoid printing `fdN not configured' messages. 351 */ 352 int 353 fdprint(aux, fdc) 354 void *aux; 355 const char *fdc; 356 { 357 register struct fdc_attach_args *fa = aux; 358 359 if (!fdc) 360 printf(" drive %d", fa->fa_drive); 361 return (QUIET); 362 } 363 364 static void 365 fdconf(fdc) 366 struct fdc_softc *fdc; 367 { 368 int vroom; 369 370 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 371 return; 372 373 /* 374 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 375 * the PROM thinks is appropriate. 376 */ 377 if ((vroom = fdc->sc_status[7]) == 0) 378 vroom = 0x64; 379 380 /* Configure controller to use FIFO and Implied Seek */ 381 out_fdc(fdc, NE7CMD_CFG); 382 out_fdc(fdc, vroom); 383 out_fdc(fdc, fdc->sc_cfg); 384 out_fdc(fdc, 0); /* PRETRK */ 385 /* No result phase */ 386 } 387 388 /* 389 * Controller and drives are represented by one and the same 390 * Openprom node, so we can as well check for the floppy boots here. 391 */ 392 393 void 394 fdcattach_mainbus(parent, self, aux) 395 struct device *parent, *self; 396 void *aux; 397 { 398 struct fdc_softc *fdc = (void *)self; 399 struct mainbus_attach_args *ma = aux; 400 401 fdc->sc_bustag = ma->ma_bustag; 402 403 if (ma->ma_promvaddr != 0) 404 fdc->sc_reg = (caddr_t)ma->ma_promvaddr; 405 else { 406 bus_space_handle_t bh; 407 if (bus_space_map2( 408 ma->ma_bustag, 409 ma->ma_iospace, 410 ma->ma_paddr, 411 ma->ma_size, 412 BUS_SPACE_MAP_LINEAR, 413 0, 414 &bh) != 0) { 415 printf("%s: cannot map registers\n", self->dv_xname); 416 return; 417 } 418 fdc->sc_reg = (caddr_t)bh; 419 } 420 421 fdcattach(fdc, ma->ma_pri); 422 } 423 424 void 425 fdcattach_obio(parent, self, aux) 426 struct device *parent, *self; 427 void *aux; 428 { 429 struct fdc_softc *fdc = (void *)self; 430 union obio_attach_args *uoba = aux; 431 struct sbus_attach_args *sa = &uoba->uoba_sbus; 432 433 fdc->sc_bustag = sa->sa_bustag; 434 435 if (sa->sa_npromvaddrs != 0) 436 fdc->sc_reg = (caddr_t)sa->sa_promvaddrs[0]; 437 else { 438 bus_space_handle_t bh; 439 440 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 441 sa->sa_offset, 442 sa->sa_size, 443 BUS_SPACE_MAP_LINEAR, 444 0, 445 &bh) != 0) { 446 printf("%s: cannot map control registers\n", 447 self->dv_xname); 448 return; 449 } 450 fdc->sc_reg = (caddr_t)bh; 451 } 452 453 if (sa->sa_nintr != 0) 454 fdcattach(fdc, sa->sa_pri); 455 } 456 457 void 458 fdcattach(fdc, pri) 459 struct fdc_softc *fdc; 460 int pri; 461 { 462 struct fdc_attach_args fa; 463 char code; 464 465 fdc->sc_state = DEVIDLE; 466 fdc->sc_istate = ISTATE_IDLE; 467 fdc->sc_flags |= FDC_EIS; 468 TAILQ_INIT(&fdc->sc_drives); 469 470 #ifdef FDC_C_HANDLER 471 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 472 fdchwintr, fdc); 473 #else 474 fdciop = &fdc->sc_io; 475 (void)bus_intr_establish(fdc->sc_bustag, pri, 476 BUS_INTR_ESTABLISH_FASTTRAP, 477 (int (*) __P((void *)))fdchwintr, NULL); 478 #endif 479 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 480 BUS_INTR_ESTABLISH_SOFTINTR, 481 fdcswintr, fdc); 482 483 /* Assume a 82077 */ 484 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 485 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 486 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 487 488 code = '7'; 489 if (*fdc->sc_reg_dor == NE7_RQM) { 490 /* 491 * This hack from Chris Torek: apparently DOR really 492 * addresses MSR/DRS on a 82072. 493 * We used to rely on the VERSION command to tell the 494 * difference (which did not work). 495 */ 496 *fdc->sc_reg_dor = FDC_250KBPS; 497 if (*fdc->sc_reg_dor == NE7_RQM) 498 code = '2'; 499 } 500 if (code == '7') { 501 fdc->sc_flags |= FDC_82077; 502 } else { 503 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 504 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 505 fdc->sc_reg_dor = 0; 506 } 507 508 #ifdef FD_DEBUG 509 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 510 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 511 if (fdc_debug) 512 printf("[version cmd]"); 513 } 514 #endif 515 516 /* 517 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 518 * Note: CFG_EFIFO is active-low, initial threshold value: 8 519 */ 520 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 521 fdconf(fdc); 522 523 if (fdc->sc_flags & FDC_82077) { 524 /* Lock configuration across soft resets. */ 525 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 526 if (fdcresult(fdc) != 1) 527 printf(" CFGLOCK: unexpected response"); 528 } 529 530 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 531 532 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 533 534 /* physical limit: four drives per controller. */ 535 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 536 fa.fa_deftype = NULL; /* unknown */ 537 fa.fa_deftype = &fd_types[0]; /* XXX */ 538 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 539 } 540 } 541 542 int 543 fdmatch(parent, match, aux) 544 struct device *parent; 545 struct cfdata *match; 546 void *aux; 547 { 548 struct fdc_softc *fdc = (void *)parent; 549 struct fdc_attach_args *fa = aux; 550 int drive = fa->fa_drive; 551 int n, ok; 552 553 if (drive > 0) 554 /* XXX - for now, punt on more than one drive */ 555 return (0); 556 557 if (fdc->sc_flags & FDC_82077) { 558 /* select drive and turn on motor */ 559 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 560 /* wait for motor to spin up */ 561 delay(250000); 562 } else { 563 auxregbisc(AUXIO4C_FDS, 0); 564 } 565 fdc->sc_nstat = 0; 566 out_fdc(fdc, NE7CMD_RECAL); 567 out_fdc(fdc, drive); 568 /* wait for recalibrate */ 569 for (n = 0; n < 10000; n++) { 570 delay(1000); 571 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 572 /* wait a bit longer till device *really* is ready */ 573 delay(100000); 574 if (out_fdc(fdc, NE7CMD_SENSEI)) 575 break; 576 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 577 /* 578 * Got `invalid command'; we interpret it 579 * to mean that the re-calibrate hasn't in 580 * fact finished yet 581 */ 582 continue; 583 break; 584 } 585 } 586 n = fdc->sc_nstat; 587 #ifdef FD_DEBUG 588 if (fdc_debug) { 589 int i; 590 printf("fdprobe: %d stati:", n); 591 for (i = 0; i < n; i++) 592 printf(" 0x%x", fdc->sc_status[i]); 593 printf("\n"); 594 } 595 #endif 596 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 597 598 /* turn off motor */ 599 if (fdc->sc_flags & FDC_82077) { 600 /* deselect drive and turn motor off */ 601 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 602 } else { 603 auxregbisc(0, AUXIO4C_FDS); 604 } 605 606 return (ok); 607 } 608 609 /* 610 * Controller is working, and drive responded. Attach it. 611 */ 612 void 613 fdattach(parent, self, aux) 614 struct device *parent, *self; 615 void *aux; 616 { 617 struct fdc_softc *fdc = (void *)parent; 618 struct fd_softc *fd = (void *)self; 619 struct fdc_attach_args *fa = aux; 620 struct fd_type *type = fa->fa_deftype; 621 int drive = fa->fa_drive; 622 623 /* XXX Allow `flags' to override device type? */ 624 625 if (type) 626 printf(": %s %d cyl, %d head, %d sec\n", type->name, 627 type->cylinders, type->heads, type->sectrac); 628 else 629 printf(": density unknown\n"); 630 631 fd->sc_cylin = -1; 632 fd->sc_drive = drive; 633 fd->sc_deftype = type; 634 fdc->sc_fd[drive] = fd; 635 636 out_fdc(fdc, NE7CMD_SPECIFY); 637 out_fdc(fdc, type->steprate); 638 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 639 640 /* 641 * Initialize and attach the disk structure. 642 */ 643 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 644 fd->sc_dk.dk_driver = &fddkdriver; 645 disk_attach(&fd->sc_dk); 646 647 /* 648 * Establish a mountroot_hook anyway in case we booted 649 * with RB_ASKNAME and get selected as the boot device. 650 */ 651 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 652 653 /* Make sure the drive motor gets turned off at shutdown time. */ 654 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 655 656 /* XXX Need to do some more fiddling with sc_dk. */ 657 dk_establish(&fd->sc_dk, &fd->sc_dv); 658 } 659 660 __inline struct fd_type * 661 fd_dev_to_type(fd, dev) 662 struct fd_softc *fd; 663 dev_t dev; 664 { 665 int type = FDTYPE(dev); 666 667 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 668 return (NULL); 669 return (type ? &fd_types[type - 1] : fd->sc_deftype); 670 } 671 672 void 673 fdstrategy(bp) 674 register struct buf *bp; /* IO operation to perform */ 675 { 676 struct fd_softc *fd; 677 int unit = FDUNIT(bp->b_dev); 678 int sz; 679 int s; 680 681 /* Valid unit, controller, and request? */ 682 if (unit >= fd_cd.cd_ndevs || 683 (fd = fd_cd.cd_devs[unit]) == 0 || 684 bp->b_blkno < 0 || 685 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 686 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 687 (bp->b_flags & B_FORMAT) == 0)) { 688 bp->b_error = EINVAL; 689 goto bad; 690 } 691 692 /* If it's a null transfer, return immediately. */ 693 if (bp->b_bcount == 0) 694 goto done; 695 696 sz = howmany(bp->b_bcount, DEV_BSIZE); 697 698 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 699 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 700 - bp->b_blkno; 701 if (sz == 0) { 702 /* If exactly at end of disk, return EOF. */ 703 bp->b_resid = bp->b_bcount; 704 goto done; 705 } 706 if (sz < 0) { 707 /* If past end of disk, return EINVAL. */ 708 bp->b_error = EINVAL; 709 goto bad; 710 } 711 /* Otherwise, truncate request. */ 712 bp->b_bcount = sz << DEV_BSHIFT; 713 } 714 715 bp->b_cylin = (bp->b_blkno * DEV_BSIZE) / 716 (FD_BSIZE(fd) * fd->sc_type->seccyl); 717 718 #ifdef FD_DEBUG 719 if (fdc_debug > 1) 720 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 721 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 722 #endif 723 724 /* Queue transfer on drive, activate drive and controller if idle. */ 725 s = splbio(); 726 disksort(&fd->sc_q, bp); 727 untimeout(fd_motor_off, fd); /* a good idea */ 728 if (!fd->sc_q.b_active) 729 fdstart(fd); 730 #ifdef DIAGNOSTIC 731 else { 732 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 733 if (fdc->sc_state == DEVIDLE) { 734 printf("fdstrategy: controller inactive\n"); 735 fdcstart(fdc); 736 } 737 } 738 #endif 739 splx(s); 740 return; 741 742 bad: 743 bp->b_flags |= B_ERROR; 744 done: 745 /* Toss transfer; we're done early. */ 746 biodone(bp); 747 } 748 749 void 750 fdstart(fd) 751 struct fd_softc *fd; 752 { 753 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 754 int active = fdc->sc_drives.tqh_first != 0; 755 756 /* Link into controller queue. */ 757 fd->sc_q.b_active = 1; 758 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 759 760 /* If controller not already active, start it. */ 761 if (!active) 762 fdcstart(fdc); 763 } 764 765 void 766 fdfinish(fd, bp) 767 struct fd_softc *fd; 768 struct buf *bp; 769 { 770 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 771 772 /* 773 * Move this drive to the end of the queue to give others a `fair' 774 * chance. We only force a switch if N operations are completed while 775 * another drive is waiting to be serviced, since there is a long motor 776 * startup delay whenever we switch. 777 */ 778 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 779 fd->sc_ops = 0; 780 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 781 if (bp->b_actf) { 782 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 783 } else 784 fd->sc_q.b_active = 0; 785 } 786 bp->b_resid = fd->sc_bcount; 787 fd->sc_skip = 0; 788 fd->sc_q.b_actf = bp->b_actf; 789 790 biodone(bp); 791 /* turn off motor 5s from now */ 792 timeout(fd_motor_off, fd, 5 * hz); 793 fdc->sc_state = DEVIDLE; 794 } 795 796 void 797 fdc_reset(fdc) 798 struct fdc_softc *fdc; 799 { 800 if (fdc->sc_flags & FDC_82077) { 801 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 802 } 803 804 *fdc->sc_reg_drs = DRS_RESET; 805 delay(10); 806 *fdc->sc_reg_drs = 0; 807 808 if (fdc->sc_flags & FDC_82077) { 809 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 810 } 811 #ifdef FD_DEBUG 812 if (fdc_debug) 813 printf("fdc reset\n"); 814 #endif 815 } 816 817 void 818 fd_set_motor(fdc) 819 struct fdc_softc *fdc; 820 { 821 struct fd_softc *fd; 822 u_char status; 823 int n; 824 825 if (fdc->sc_flags & FDC_82077) { 826 status = FDO_FRST | FDO_FDMAEN; 827 if ((fd = fdc->sc_drives.tqh_first) != NULL) 828 status |= fd->sc_drive; 829 830 for (n = 0; n < 4; n++) 831 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 832 status |= FDO_MOEN(n); 833 *fdc->sc_reg_dor = status; 834 } else { 835 int on = 0; 836 837 for (n = 0; n < 4; n++) 838 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 839 on = 1; 840 if (on) { 841 auxregbisc(AUXIO4C_FDS, 0); 842 } else { 843 auxregbisc(0, AUXIO4C_FDS); 844 } 845 } 846 } 847 848 void 849 fd_motor_off(arg) 850 void *arg; 851 { 852 struct fd_softc *fd = arg; 853 int s; 854 855 s = splbio(); 856 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 857 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 858 splx(s); 859 } 860 861 void 862 fd_motor_on(arg) 863 void *arg; 864 { 865 struct fd_softc *fd = arg; 866 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 867 int s; 868 869 s = splbio(); 870 fd->sc_flags &= ~FD_MOTOR_WAIT; 871 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 872 (void) fdcstate(fdc); 873 splx(s); 874 } 875 876 int 877 fdcresult(fdc) 878 struct fdc_softc *fdc; 879 { 880 u_char i; 881 int j = 100000, 882 n = 0; 883 884 for (; j; j--) { 885 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 886 if (i == NE7_RQM) 887 return (fdc->sc_nstat = n); 888 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 889 if (n >= sizeof(fdc->sc_status)) { 890 log(LOG_ERR, "fdcresult: overrun\n"); 891 return (-1); 892 } 893 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 894 } else 895 delay(10); 896 } 897 log(LOG_ERR, "fdcresult: timeout\n"); 898 return (fdc->sc_nstat = -1); 899 } 900 901 int 902 out_fdc(fdc, x) 903 struct fdc_softc *fdc; 904 u_char x; 905 { 906 int i = 100000; 907 908 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 909 delay(1); 910 if (i <= 0) 911 return (-1); 912 913 *fdc->sc_reg_fifo = x; 914 return (0); 915 } 916 917 int 918 fdopen(dev, flags, fmt, p) 919 dev_t dev; 920 int flags, fmt; 921 struct proc *p; 922 { 923 int unit, pmask; 924 struct fd_softc *fd; 925 struct fd_type *type; 926 927 unit = FDUNIT(dev); 928 if (unit >= fd_cd.cd_ndevs) 929 return (ENXIO); 930 fd = fd_cd.cd_devs[unit]; 931 if (fd == 0) 932 return (ENXIO); 933 type = fd_dev_to_type(fd, dev); 934 if (type == NULL) 935 return (ENXIO); 936 937 if ((fd->sc_flags & FD_OPEN) != 0 && 938 fd->sc_type != type) 939 return (EBUSY); 940 941 fd->sc_type = type; 942 fd->sc_cylin = -1; 943 fd->sc_flags |= FD_OPEN; 944 945 /* 946 * Only update the disklabel if we're not open anywhere else. 947 */ 948 if (fd->sc_dk.dk_openmask == 0) 949 fdgetdisklabel(dev); 950 951 pmask = (1 << DISKPART(dev)); 952 953 switch (fmt) { 954 case S_IFCHR: 955 fd->sc_dk.dk_copenmask |= pmask; 956 break; 957 958 case S_IFBLK: 959 fd->sc_dk.dk_bopenmask |= pmask; 960 break; 961 } 962 fd->sc_dk.dk_openmask = 963 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 964 965 return (0); 966 } 967 968 int 969 fdclose(dev, flags, fmt, p) 970 dev_t dev; 971 int flags, fmt; 972 struct proc *p; 973 { 974 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 975 int pmask = (1 << DISKPART(dev)); 976 977 fd->sc_flags &= ~FD_OPEN; 978 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 979 980 switch (fmt) { 981 case S_IFCHR: 982 fd->sc_dk.dk_copenmask &= ~pmask; 983 break; 984 985 case S_IFBLK: 986 fd->sc_dk.dk_bopenmask &= ~pmask; 987 break; 988 } 989 fd->sc_dk.dk_openmask = 990 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 991 992 return (0); 993 } 994 995 int 996 fdread(dev, uio, flag) 997 dev_t dev; 998 struct uio *uio; 999 int flag; 1000 { 1001 1002 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1003 } 1004 1005 int 1006 fdwrite(dev, uio, flag) 1007 dev_t dev; 1008 struct uio *uio; 1009 int flag; 1010 { 1011 1012 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1013 } 1014 1015 void 1016 fdcstart(fdc) 1017 struct fdc_softc *fdc; 1018 { 1019 1020 #ifdef DIAGNOSTIC 1021 /* only got here if controller's drive queue was inactive; should 1022 be in idle state */ 1023 if (fdc->sc_state != DEVIDLE) { 1024 printf("fdcstart: not idle\n"); 1025 return; 1026 } 1027 #endif 1028 (void) fdcstate(fdc); 1029 } 1030 1031 void 1032 fdcstatus(dv, n, s) 1033 struct device *dv; 1034 int n; 1035 char *s; 1036 { 1037 struct fdc_softc *fdc = (void *)dv->dv_parent; 1038 char bits[64]; 1039 #if 0 1040 /* 1041 * A 82072 seems to return <invalid command> on 1042 * gratuitous Sense Interrupt commands. 1043 */ 1044 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1045 out_fdc(fdc, NE7CMD_SENSEI); 1046 (void) fdcresult(fdc); 1047 n = 2; 1048 } 1049 #endif 1050 1051 /* Just print last status */ 1052 n = fdc->sc_nstat; 1053 1054 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1055 1056 switch (n) { 1057 case 0: 1058 printf("\n"); 1059 break; 1060 case 2: 1061 printf(" (st0 %s cyl %d)\n", 1062 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1063 bits, sizeof(bits)), fdc->sc_status[1]); 1064 break; 1065 case 7: 1066 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1067 NE7_ST0BITS, bits, sizeof(bits))); 1068 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1069 NE7_ST1BITS, bits, sizeof(bits))); 1070 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1071 NE7_ST2BITS, bits, sizeof(bits))); 1072 printf(" cyl %d head %d sec %d)\n", 1073 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1074 break; 1075 #ifdef DIAGNOSTIC 1076 default: 1077 printf(" fdcstatus: weird size: %d\n", n); 1078 break; 1079 #endif 1080 } 1081 } 1082 1083 void 1084 fdctimeout(arg) 1085 void *arg; 1086 { 1087 struct fdc_softc *fdc = arg; 1088 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1089 int s; 1090 1091 s = splbio(); 1092 fdcstatus(&fd->sc_dv, 0, "timeout"); 1093 1094 if (fd->sc_q.b_actf) 1095 fdc->sc_state++; 1096 else 1097 fdc->sc_state = DEVIDLE; 1098 1099 (void) fdcstate(fdc); 1100 splx(s); 1101 } 1102 1103 void 1104 fdcpseudointr(arg) 1105 void *arg; 1106 { 1107 struct fdc_softc *fdc = arg; 1108 int s; 1109 1110 /* Just ensure it has the right spl. */ 1111 s = splbio(); 1112 (void) fdcstate(fdc); 1113 splx(s); 1114 } 1115 1116 1117 #ifdef FDC_C_HANDLER 1118 /* 1119 * hardware interrupt entry point: must be converted to `fast' 1120 * (in-window) handler. 1121 */ 1122 int 1123 fdchwintr(arg) 1124 void *arg; 1125 { 1126 struct fdc_softc *fdc = arg; 1127 1128 switch (fdc->sc_istate) { 1129 case ISTATE_IDLE: 1130 return (0); 1131 case ISTATE_SENSEI: 1132 out_fdc(fdc, NE7CMD_SENSEI); 1133 fdcresult(fdc); 1134 fdc->sc_istate = ISTATE_IDLE; 1135 FD_SET_SWINTR; 1136 return (1); 1137 case ISTATE_SPURIOUS: 1138 fdcresult(fdc); 1139 fdc->sc_istate = ISTATE_SPURIOUS; 1140 printf("fdc: stray hard interrupt... "); 1141 FD_SET_SWINTR; 1142 return (1); 1143 case ISTATE_DMA: 1144 break; 1145 default: 1146 printf("fdc: goofed ...\n"); 1147 return (1); 1148 } 1149 1150 for (;;) { 1151 register int msr; 1152 1153 msr = *fdc->sc_reg_msr; 1154 1155 if ((msr & NE7_RQM) == 0) 1156 break; 1157 1158 if ((msr & NE7_NDM) == 0) { 1159 fdcresult(fdc); 1160 fdc->sc_istate = ISTATE_IDLE; 1161 ienab_bis(IE_FDSOFT); 1162 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1163 break; 1164 } 1165 1166 if (msr & NE7_DIO) { 1167 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1168 } else { 1169 *fdc->sc_reg_fifo = *fdc->sc_data++; 1170 } 1171 if (--fdc->sc_tc == 0) { 1172 fdc->sc_istate = ISTATE_DONE; 1173 FTC_FLIP; 1174 fdcresult(fdc); 1175 FD_SET_SWINTR; 1176 break; 1177 } 1178 } 1179 return (1); 1180 } 1181 #endif 1182 1183 int 1184 fdcswintr(arg) 1185 void *arg; 1186 { 1187 struct fdc_softc *fdc = arg; 1188 int s; 1189 1190 if (fdc->sc_istate != ISTATE_DONE) 1191 return (0); 1192 1193 fdc->sc_istate = ISTATE_IDLE; 1194 s = splbio(); 1195 fdcstate(fdc); 1196 splx(s); 1197 return (1); 1198 } 1199 1200 int 1201 fdcstate(fdc) 1202 struct fdc_softc *fdc; 1203 { 1204 #define st0 fdc->sc_status[0] 1205 #define st1 fdc->sc_status[1] 1206 #define cyl fdc->sc_status[1] 1207 #define OUT_FDC(fdc, c, s) \ 1208 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1209 1210 struct fd_softc *fd; 1211 struct buf *bp; 1212 int read, head, sec, nblks; 1213 struct fd_type *type; 1214 struct ne7_fd_formb *finfo = NULL; 1215 1216 1217 if (fdc->sc_istate != ISTATE_IDLE) { 1218 /* Trouble... */ 1219 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1220 fdc->sc_state, fdc->sc_istate); 1221 fdc->sc_istate = ISTATE_IDLE; 1222 if (fdc->sc_state == RESETCOMPLETE || 1223 fdc->sc_state == RESETTIMEDOUT) { 1224 panic("fdcintr: spurious interrupt can't be cleared"); 1225 } 1226 goto doreset; 1227 } 1228 1229 loop: 1230 /* Is there a drive for the controller to do a transfer with? */ 1231 fd = fdc->sc_drives.tqh_first; 1232 if (fd == NULL) { 1233 fdc->sc_state = DEVIDLE; 1234 return (0); 1235 } 1236 1237 /* Is there a transfer to this drive? If not, deactivate drive. */ 1238 bp = fd->sc_q.b_actf; 1239 if (bp == NULL) { 1240 fd->sc_ops = 0; 1241 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1242 fd->sc_q.b_active = 0; 1243 goto loop; 1244 } 1245 1246 if (bp->b_flags & B_FORMAT) 1247 finfo = (struct ne7_fd_formb *)bp->b_data; 1248 1249 switch (fdc->sc_state) { 1250 case DEVIDLE: 1251 fdc->sc_errors = 0; 1252 fd->sc_skip = 0; 1253 fd->sc_bcount = bp->b_bcount; 1254 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1255 untimeout(fd_motor_off, fd); 1256 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1257 fdc->sc_state = MOTORWAIT; 1258 return (1); 1259 } 1260 if ((fd->sc_flags & FD_MOTOR) == 0) { 1261 /* Turn on the motor, being careful about pairing. */ 1262 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1263 if (ofd && ofd->sc_flags & FD_MOTOR) { 1264 untimeout(fd_motor_off, ofd); 1265 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1266 } 1267 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1268 fd_set_motor(fdc); 1269 fdc->sc_state = MOTORWAIT; 1270 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1271 /* Allow .25s for motor to stabilize. */ 1272 timeout(fd_motor_on, fd, hz / 4); 1273 } else { 1274 fd->sc_flags &= ~FD_MOTOR_WAIT; 1275 goto loop; 1276 } 1277 return (1); 1278 } 1279 /* Make sure the right drive is selected. */ 1280 fd_set_motor(fdc); 1281 1282 /*FALLTHROUGH*/ 1283 case DOSEEK: 1284 doseek: 1285 if ((fdc->sc_flags & FDC_EIS) && 1286 (bp->b_flags & B_FORMAT) == 0) { 1287 fd->sc_cylin = bp->b_cylin; 1288 /* We use implied seek */ 1289 goto doio; 1290 } 1291 1292 if (fd->sc_cylin == bp->b_cylin) 1293 goto doio; 1294 1295 /* specify command */ 1296 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1297 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1298 /* XXX head load time == 6ms */ 1299 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1300 1301 fdc->sc_istate = ISTATE_SENSEI; 1302 /* seek function */ 1303 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1304 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1305 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1306 1307 fd->sc_cylin = -1; 1308 fdc->sc_state = SEEKWAIT; 1309 fdc->sc_nstat = 0; 1310 1311 fd->sc_dk.dk_seek++; 1312 disk_busy(&fd->sc_dk); 1313 1314 timeout(fdctimeout, fdc, 4 * hz); 1315 return (1); 1316 1317 case DOIO: 1318 doio: 1319 if (finfo != NULL) 1320 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1321 (char *)finfo; 1322 type = fd->sc_type; 1323 sec = fd->sc_blkno % type->seccyl; 1324 nblks = type->seccyl - sec; 1325 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1326 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1327 fd->sc_nblks = nblks; 1328 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1329 head = sec / type->sectrac; 1330 sec -= head * type->sectrac; 1331 #ifdef DIAGNOSTIC 1332 {int block; 1333 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1334 if (block != fd->sc_blkno) { 1335 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1336 #ifdef DDB 1337 Debugger(); 1338 #endif 1339 }} 1340 #endif 1341 read = bp->b_flags & B_READ; 1342 1343 /* Setup for pseudo DMA */ 1344 fdc->sc_data = bp->b_data + fd->sc_skip; 1345 fdc->sc_tc = fd->sc_nbytes; 1346 1347 *fdc->sc_reg_drs = type->rate; 1348 #ifdef FD_DEBUG 1349 if (fdc_debug > 1) 1350 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1351 read ? "read" : "write", fd->sc_drive, 1352 fd->sc_cylin, head, sec, nblks); 1353 #endif 1354 fdc->sc_state = IOCOMPLETE; 1355 fdc->sc_istate = ISTATE_DMA; 1356 fdc->sc_nstat = 0; 1357 if (finfo != NULL) { 1358 /* formatting */ 1359 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1360 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1361 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1362 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1363 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1364 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1365 } else { 1366 if (read) 1367 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1368 else 1369 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1370 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1371 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1372 OUT_FDC(fdc, head, IOTIMEDOUT); 1373 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1374 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1375 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1376 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1377 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1378 } 1379 1380 disk_busy(&fd->sc_dk); 1381 1382 /* allow 2 seconds for operation */ 1383 timeout(fdctimeout, fdc, 2 * hz); 1384 return (1); /* will return later */ 1385 1386 case SEEKWAIT: 1387 untimeout(fdctimeout, fdc); 1388 fdc->sc_state = SEEKCOMPLETE; 1389 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1390 /* allow 1/50 second for heads to settle */ 1391 timeout(fdcpseudointr, fdc, hz / 50); 1392 return (1); /* will return later */ 1393 } 1394 /*FALLTHROUGH*/ 1395 case SEEKCOMPLETE: 1396 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1397 1398 /* Make sure seek really happened. */ 1399 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1400 cyl != bp->b_cylin * fd->sc_type->step) { 1401 #ifdef FD_DEBUG 1402 if (fdc_debug) 1403 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1404 #endif 1405 fdcretry(fdc); 1406 goto loop; 1407 } 1408 fd->sc_cylin = bp->b_cylin; 1409 goto doio; 1410 1411 case IOTIMEDOUT: 1412 FTC_FLIP; 1413 (void)fdcresult(fdc); 1414 /*FALLTHROUGH*/ 1415 case SEEKTIMEDOUT: 1416 case RECALTIMEDOUT: 1417 case RESETTIMEDOUT: 1418 fdcretry(fdc); 1419 goto loop; 1420 1421 case IOCOMPLETE: /* IO DONE, post-analyze */ 1422 untimeout(fdctimeout, fdc); 1423 1424 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1425 1426 if (fdc->sc_nstat != 7 || st1 != 0 || 1427 ((st0 & 0xf8) != 0 && 1428 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1429 #ifdef FD_DEBUG 1430 if (fdc_debug) { 1431 fdcstatus(&fd->sc_dv, 7, 1432 bp->b_flags & B_READ 1433 ? "read failed" : "write failed"); 1434 printf("blkno %d nblks %d nstat %d tc %d\n", 1435 fd->sc_blkno, fd->sc_nblks, 1436 fdc->sc_nstat, fdc->sc_tc); 1437 } 1438 #endif 1439 if (fdc->sc_nstat == 7 && 1440 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1441 1442 /* 1443 * Silently retry overruns if no other 1444 * error bit is set. Adjust threshold. 1445 */ 1446 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1447 if (thr < 15) { 1448 thr++; 1449 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1450 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1451 #ifdef FD_DEBUG 1452 if (fdc_debug) 1453 printf("fdc: %d -> threshold\n", thr); 1454 #endif 1455 fdconf(fdc); 1456 fdc->sc_overruns = 0; 1457 } 1458 if (++fdc->sc_overruns < 3) { 1459 fdc->sc_state = DOIO; 1460 goto loop; 1461 } 1462 } 1463 fdcretry(fdc); 1464 goto loop; 1465 } 1466 if (fdc->sc_errors) { 1467 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1468 fd->sc_skip / FD_BSIZE(fd), 1469 (struct disklabel *)NULL); 1470 printf("\n"); 1471 fdc->sc_errors = 0; 1472 } else { 1473 if (--fdc->sc_overruns < -20) { 1474 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1475 if (thr > 0) { 1476 thr--; 1477 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1478 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1479 #ifdef FD_DEBUG 1480 if (fdc_debug) 1481 printf("fdc: %d -> threshold\n", thr); 1482 #endif 1483 fdconf(fdc); 1484 } 1485 fdc->sc_overruns = 0; 1486 } 1487 } 1488 fd->sc_blkno += fd->sc_nblks; 1489 fd->sc_skip += fd->sc_nbytes; 1490 fd->sc_bcount -= fd->sc_nbytes; 1491 if (finfo == NULL && fd->sc_bcount > 0) { 1492 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1493 goto doseek; 1494 } 1495 fdfinish(fd, bp); 1496 goto loop; 1497 1498 case DORESET: 1499 doreset: 1500 /* try a reset, keep motor on */ 1501 fd_set_motor(fdc); 1502 delay(100); 1503 fdc_reset(fdc); 1504 fdc->sc_nstat = 0; 1505 fdc->sc_istate = ISTATE_SENSEI; 1506 fdc->sc_state = RESETCOMPLETE; 1507 timeout(fdctimeout, fdc, hz / 2); 1508 return (1); /* will return later */ 1509 1510 case RESETCOMPLETE: 1511 untimeout(fdctimeout, fdc); 1512 fdconf(fdc); 1513 1514 /* fall through */ 1515 case DORECAL: 1516 fdc->sc_state = RECALWAIT; 1517 fdc->sc_istate = ISTATE_SENSEI; 1518 fdc->sc_nstat = 0; 1519 /* recalibrate function */ 1520 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1521 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1522 timeout(fdctimeout, fdc, 5 * hz); 1523 return (1); /* will return later */ 1524 1525 case RECALWAIT: 1526 untimeout(fdctimeout, fdc); 1527 fdc->sc_state = RECALCOMPLETE; 1528 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1529 /* allow 1/30 second for heads to settle */ 1530 timeout(fdcpseudointr, fdc, hz / 30); 1531 return (1); /* will return later */ 1532 } 1533 1534 case RECALCOMPLETE: 1535 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1536 #ifdef FD_DEBUG 1537 if (fdc_debug) 1538 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1539 #endif 1540 fdcretry(fdc); 1541 goto loop; 1542 } 1543 fd->sc_cylin = 0; 1544 goto doseek; 1545 1546 case MOTORWAIT: 1547 if (fd->sc_flags & FD_MOTOR_WAIT) 1548 return (1); /* time's not up yet */ 1549 goto doseek; 1550 1551 default: 1552 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1553 return (1); 1554 } 1555 #ifdef DIAGNOSTIC 1556 panic("fdcintr: impossible"); 1557 #endif 1558 #undef st0 1559 #undef st1 1560 #undef cyl 1561 } 1562 1563 void 1564 fdcretry(fdc) 1565 struct fdc_softc *fdc; 1566 { 1567 char bits[64]; 1568 struct fd_softc *fd; 1569 struct buf *bp; 1570 1571 fd = fdc->sc_drives.tqh_first; 1572 bp = fd->sc_q.b_actf; 1573 1574 fdc->sc_overruns = 0; 1575 if (fd->sc_opts & FDOPT_NORETRY) 1576 goto fail; 1577 1578 switch (fdc->sc_errors) { 1579 case 0: 1580 /* try again */ 1581 fdc->sc_state = 1582 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1583 break; 1584 1585 case 1: case 2: case 3: 1586 /* didn't work; try recalibrating */ 1587 fdc->sc_state = DORECAL; 1588 break; 1589 1590 case 4: 1591 /* still no go; reset the bastard */ 1592 fdc->sc_state = DORESET; 1593 break; 1594 1595 default: 1596 fail: 1597 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1598 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1599 fd->sc_skip / FD_BSIZE(fd), 1600 (struct disklabel *)NULL); 1601 1602 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1603 NE7_ST0BITS, bits, sizeof(bits))); 1604 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1605 NE7_ST1BITS, bits, sizeof(bits))); 1606 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1607 NE7_ST2BITS, bits, sizeof(bits))); 1608 printf(" cyl %d head %d sec %d)\n", 1609 fdc->sc_status[3], fdc->sc_status[4], 1610 fdc->sc_status[5]); 1611 } 1612 1613 bp->b_flags |= B_ERROR; 1614 bp->b_error = EIO; 1615 fdfinish(fd, bp); 1616 } 1617 fdc->sc_errors++; 1618 } 1619 1620 int 1621 fdsize(dev) 1622 dev_t dev; 1623 { 1624 1625 /* Swapping to floppies would not make sense. */ 1626 return (-1); 1627 } 1628 1629 int 1630 fddump(dev, blkno, va, size) 1631 dev_t dev; 1632 daddr_t blkno; 1633 caddr_t va; 1634 size_t size; 1635 { 1636 1637 /* Not implemented. */ 1638 return (EINVAL); 1639 } 1640 1641 int 1642 fdioctl(dev, cmd, addr, flag, p) 1643 dev_t dev; 1644 u_long cmd; 1645 caddr_t addr; 1646 int flag; 1647 struct proc *p; 1648 { 1649 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1650 struct fdformat_parms *form_parms; 1651 struct fdformat_cmd *form_cmd; 1652 struct ne7_fd_formb fd_formb; 1653 int il[FD_MAX_NSEC + 1]; 1654 int i, j; 1655 int error; 1656 1657 switch (cmd) { 1658 case DIOCGDINFO: 1659 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1660 return 0; 1661 1662 case DIOCWLABEL: 1663 if ((flag & FWRITE) == 0) 1664 return EBADF; 1665 /* XXX do something */ 1666 return (0); 1667 1668 case DIOCWDINFO: 1669 if ((flag & FWRITE) == 0) 1670 return (EBADF); 1671 1672 error = setdisklabel(fd->sc_dk.dk_label, 1673 (struct disklabel *)addr, 0, 1674 fd->sc_dk.dk_cpulabel); 1675 if (error) 1676 return (error); 1677 1678 error = writedisklabel(dev, fdstrategy, 1679 fd->sc_dk.dk_label, 1680 fd->sc_dk.dk_cpulabel); 1681 return (error); 1682 1683 case DIOCLOCK: 1684 /* 1685 * Nothing to do here, really. 1686 */ 1687 return (0); 1688 1689 case DIOCEJECT: 1690 if (*(int *)addr == 0) { 1691 int part = DISKPART(dev); 1692 /* 1693 * Don't force eject: check that we are the only 1694 * partition open. If so, unlock it. 1695 */ 1696 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1697 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1698 fd->sc_dk.dk_openmask) { 1699 return (EBUSY); 1700 } 1701 } 1702 /* FALLTHROUGH */ 1703 case ODIOCEJECT: 1704 fd_do_eject(fd); 1705 return (0); 1706 1707 case FDIOCGETFORMAT: 1708 form_parms = (struct fdformat_parms *)addr; 1709 form_parms->fdformat_version = FDFORMAT_VERSION; 1710 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1711 form_parms->ncyl = fd->sc_type->cylinders; 1712 form_parms->nspt = fd->sc_type->sectrac; 1713 form_parms->ntrk = fd->sc_type->heads; 1714 form_parms->stepspercyl = fd->sc_type->step; 1715 form_parms->gaplen = fd->sc_type->gap2; 1716 form_parms->fillbyte = fd->sc_type->fillbyte; 1717 form_parms->interleave = fd->sc_type->interleave; 1718 switch (fd->sc_type->rate) { 1719 case FDC_500KBPS: 1720 form_parms->xfer_rate = 500 * 1024; 1721 break; 1722 case FDC_300KBPS: 1723 form_parms->xfer_rate = 300 * 1024; 1724 break; 1725 case FDC_250KBPS: 1726 form_parms->xfer_rate = 250 * 1024; 1727 break; 1728 default: 1729 return (EINVAL); 1730 } 1731 return (0); 1732 1733 case FDIOCSETFORMAT: 1734 if ((flag & FWRITE) == 0) 1735 return (EBADF); /* must be opened for writing */ 1736 1737 form_parms = (struct fdformat_parms *)addr; 1738 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1739 return (EINVAL);/* wrong version of formatting prog */ 1740 1741 i = form_parms->nbps >> 7; 1742 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1743 i & ~(1 << (ffs(i)-1))) 1744 /* not a power-of-two multiple of 128 */ 1745 return (EINVAL); 1746 1747 switch (form_parms->xfer_rate) { 1748 case 500 * 1024: 1749 fd->sc_type->rate = FDC_500KBPS; 1750 break; 1751 case 300 * 1024: 1752 fd->sc_type->rate = FDC_300KBPS; 1753 break; 1754 case 250 * 1024: 1755 fd->sc_type->rate = FDC_250KBPS; 1756 break; 1757 default: 1758 return (EINVAL); 1759 } 1760 1761 if (form_parms->nspt > FD_MAX_NSEC || 1762 form_parms->fillbyte > 0xff || 1763 form_parms->interleave > 0xff) 1764 return EINVAL; 1765 fd->sc_type->sectrac = form_parms->nspt; 1766 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1767 return EINVAL; 1768 fd->sc_type->heads = form_parms->ntrk; 1769 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1770 fd->sc_type->secsize = ffs(i)-1; 1771 fd->sc_type->gap2 = form_parms->gaplen; 1772 fd->sc_type->cylinders = form_parms->ncyl; 1773 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1774 form_parms->nbps / DEV_BSIZE; 1775 fd->sc_type->step = form_parms->stepspercyl; 1776 fd->sc_type->fillbyte = form_parms->fillbyte; 1777 fd->sc_type->interleave = form_parms->interleave; 1778 return (0); 1779 1780 case FDIOCFORMAT_TRACK: 1781 if((flag & FWRITE) == 0) 1782 /* must be opened for writing */ 1783 return (EBADF); 1784 form_cmd = (struct fdformat_cmd *)addr; 1785 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1786 /* wrong version of formatting prog */ 1787 return (EINVAL); 1788 1789 if (form_cmd->head >= fd->sc_type->heads || 1790 form_cmd->cylinder >= fd->sc_type->cylinders) { 1791 return (EINVAL); 1792 } 1793 1794 fd_formb.head = form_cmd->head; 1795 fd_formb.cyl = form_cmd->cylinder; 1796 fd_formb.transfer_rate = fd->sc_type->rate; 1797 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1798 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1799 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1800 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1801 1802 bzero(il, sizeof il); 1803 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1804 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1805 j++; 1806 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1807 j += fd->sc_type->interleave; 1808 } 1809 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1810 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1811 fd_formb.fd_formb_headno(i) = form_cmd->head; 1812 fd_formb.fd_formb_secno(i) = il[i+1]; 1813 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1814 } 1815 1816 return fdformat(dev, &fd_formb, p); 1817 1818 case FDIOCGETOPTS: /* get drive options */ 1819 *(int *)addr = fd->sc_opts; 1820 return (0); 1821 1822 case FDIOCSETOPTS: /* set drive options */ 1823 fd->sc_opts = *(int *)addr; 1824 return (0); 1825 1826 #ifdef DEBUG 1827 case _IO('f', 100): 1828 { 1829 int i; 1830 struct fdc_softc *fdc = (struct fdc_softc *) 1831 fd->sc_dv.dv_parent; 1832 1833 out_fdc(fdc, NE7CMD_DUMPREG); 1834 fdcresult(fdc); 1835 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1836 for (i = 0; i < fdc->sc_nstat; i++) 1837 printf(" 0x%x", fdc->sc_status[i]); 1838 printf(">\n"); 1839 } 1840 1841 return (0); 1842 case _IOW('f', 101, int): 1843 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1844 ~CFG_THRHLD_MASK; 1845 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1846 (*(int *)addr & CFG_THRHLD_MASK); 1847 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1848 return (0); 1849 case _IO('f', 102): 1850 { 1851 int i; 1852 struct fdc_softc *fdc = (struct fdc_softc *) 1853 fd->sc_dv.dv_parent; 1854 out_fdc(fdc, NE7CMD_SENSEI); 1855 fdcresult(fdc); 1856 printf("sensei(%d regs): <", fdc->sc_nstat); 1857 for (i=0; i< fdc->sc_nstat; i++) 1858 printf(" 0x%x", fdc->sc_status[i]); 1859 } 1860 printf(">\n"); 1861 return (0); 1862 #endif 1863 default: 1864 return (ENOTTY); 1865 } 1866 1867 #ifdef DIAGNOSTIC 1868 panic("fdioctl: impossible"); 1869 #endif 1870 } 1871 1872 int 1873 fdformat(dev, finfo, p) 1874 dev_t dev; 1875 struct ne7_fd_formb *finfo; 1876 struct proc *p; 1877 { 1878 int rv = 0, s; 1879 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1880 struct fd_type *type = fd->sc_type; 1881 struct buf *bp; 1882 1883 /* set up a buffer header for fdstrategy() */ 1884 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1885 if (bp == 0) 1886 return (ENOBUFS); 1887 1888 PHOLD(p); 1889 bzero((void *)bp, sizeof(struct buf)); 1890 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1891 bp->b_proc = p; 1892 bp->b_dev = dev; 1893 1894 /* 1895 * Calculate a fake blkno, so fdstrategy() would initiate a 1896 * seek to the requested cylinder. 1897 */ 1898 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1899 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1900 / DEV_BSIZE; 1901 1902 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1903 bp->b_data = (caddr_t)finfo; 1904 1905 #ifdef FD_DEBUG 1906 if (fdc_debug) 1907 printf("fdformat: blkno 0x%x count %ld\n", 1908 bp->b_blkno, bp->b_bcount); 1909 #endif 1910 1911 /* now do the format */ 1912 fdstrategy(bp); 1913 1914 /* ...and wait for it to complete */ 1915 s = splbio(); 1916 while (!(bp->b_flags & B_DONE)) { 1917 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1918 if (rv == EWOULDBLOCK) 1919 break; 1920 } 1921 splx(s); 1922 1923 if (rv == EWOULDBLOCK) { 1924 /* timed out */ 1925 rv = EIO; 1926 biodone(bp); 1927 } 1928 if (bp->b_flags & B_ERROR) { 1929 rv = bp->b_error; 1930 } 1931 PRELE(p); 1932 free(bp, M_TEMP); 1933 return (rv); 1934 } 1935 1936 void 1937 fdgetdisklabel(dev) 1938 dev_t dev; 1939 { 1940 int unit = FDUNIT(dev), i; 1941 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1942 struct disklabel *lp = fd->sc_dk.dk_label; 1943 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1944 1945 bzero(lp, sizeof(struct disklabel)); 1946 bzero(lp, sizeof(struct cpu_disklabel)); 1947 1948 lp->d_type = DTYPE_FLOPPY; 1949 lp->d_secsize = FD_BSIZE(fd); 1950 lp->d_secpercyl = fd->sc_type->seccyl; 1951 lp->d_nsectors = fd->sc_type->sectrac; 1952 lp->d_ncylinders = fd->sc_type->cylinders; 1953 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1954 lp->d_rpm = 3600; /* XXX like it matters... */ 1955 1956 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1957 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1958 lp->d_interleave = 1; 1959 1960 lp->d_partitions[RAW_PART].p_offset = 0; 1961 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1962 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1963 lp->d_npartitions = RAW_PART + 1; 1964 1965 lp->d_magic = DISKMAGIC; 1966 lp->d_magic2 = DISKMAGIC; 1967 lp->d_checksum = dkcksum(lp); 1968 1969 /* 1970 * Call the generic disklabel extraction routine. If there's 1971 * not a label there, fake it. 1972 */ 1973 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1974 strncpy(lp->d_packname, "default label", 1975 sizeof(lp->d_packname)); 1976 /* 1977 * Reset the partition info; it might have gotten 1978 * trashed in readdisklabel(). 1979 * 1980 * XXX Why do we have to do this? readdisklabel() 1981 * should be safe... 1982 */ 1983 for (i = 0; i < MAXPARTITIONS; ++i) { 1984 lp->d_partitions[i].p_offset = 0; 1985 if (i == RAW_PART) { 1986 lp->d_partitions[i].p_size = 1987 lp->d_secpercyl * lp->d_ncylinders; 1988 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1989 } else { 1990 lp->d_partitions[i].p_size = 0; 1991 lp->d_partitions[i].p_fstype = FS_UNUSED; 1992 } 1993 } 1994 lp->d_npartitions = RAW_PART + 1; 1995 } 1996 } 1997 1998 void 1999 fd_do_eject(fd) 2000 struct fd_softc *fd; 2001 { 2002 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2003 2004 if (CPU_ISSUN4C) { 2005 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2006 delay(10); 2007 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2008 return; 2009 } 2010 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 2011 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2012 *fdc->sc_reg_dor = dor | FDO_EJ; 2013 delay(10); 2014 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 2015 return; 2016 } 2017 } 2018 2019 #ifdef MEMORY_DISK_HOOKS 2020 int fd_read_md_image __P((size_t *, caddr_t *)); 2021 #endif 2022 2023 /* ARGSUSED */ 2024 void 2025 fd_mountroot_hook(dev) 2026 struct device *dev; 2027 { 2028 int c; 2029 2030 fd_do_eject((struct fd_softc *)dev); 2031 printf("Insert filesystem floppy and press return."); 2032 for (;;) { 2033 c = cngetc(); 2034 if ((c == '\r') || (c == '\n')) { 2035 printf("\n"); 2036 break; 2037 } 2038 } 2039 } 2040 2041 #ifdef MEMORY_DISK_HOOKS 2042 2043 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2044 2045 int 2046 fd_read_md_image(sizep, addrp) 2047 size_t *sizep; 2048 caddr_t *addrp; 2049 { 2050 struct buf buf, *bp = &buf; 2051 dev_t dev; 2052 off_t offset; 2053 caddr_t addr; 2054 2055 dev = makedev(54,0); /* XXX */ 2056 2057 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2058 *addrp = addr; 2059 2060 if (fdopen(dev, 0, S_IFCHR, NULL)) 2061 panic("fd: mountroot: fdopen"); 2062 2063 offset = 0; 2064 2065 for (;;) { 2066 bp->b_dev = dev; 2067 bp->b_error = 0; 2068 bp->b_resid = 0; 2069 bp->b_proc = NULL; 2070 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2071 bp->b_blkno = btodb(offset); 2072 bp->b_bcount = DEV_BSIZE; 2073 bp->b_data = addr; 2074 fdstrategy(bp); 2075 while ((bp->b_flags & B_DONE) == 0) { 2076 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2077 } 2078 if (bp->b_error) 2079 panic("fd: mountroot: fdread error %d", bp->b_error); 2080 2081 if (bp->b_resid != 0) 2082 break; 2083 2084 addr += DEV_BSIZE; 2085 offset += DEV_BSIZE; 2086 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2087 break; 2088 } 2089 (void)fdclose(dev, 0, S_IFCHR, NULL); 2090 *sizep = offset; 2091 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2092 return (0); 2093 } 2094 #endif 2095
Indexes created Fri Oct 03 02:09:57 GMT 2025