fd.c revision 1.42
1 /* $NetBSD: fd.c,v 1.42 1996/12/08 23:40:32 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles Hannum. 5 * Copyright (c) 1995 Paul Kranenburg. 6 * Copyright (c) 1990 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Don Ahn. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)fd.c 7.4 (Berkeley) 5/25/91 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/file.h> 47 #include <sys/ioctl.h> 48 #include <sys/device.h> 49 #include <sys/disklabel.h> 50 #include <sys/dkstat.h> 51 #include <sys/disk.h> 52 #include <sys/fdio.h> 53 #include <sys/buf.h> 54 #include <sys/malloc.h> 55 #include <sys/proc.h> 56 #include <sys/uio.h> 57 #include <sys/stat.h> 58 #include <sys/syslog.h> 59 #include <sys/queue.h> 60 #include <sys/conf.h> 61 62 #include <dev/cons.h> 63 64 #include <machine/cpu.h> 65 #include <machine/autoconf.h> 66 #include <machine/conf.h> 67 68 #include <sparc/sparc/auxreg.h> 69 #include <sparc/dev/fdreg.h> 70 #include <sparc/dev/fdvar.h> 71 72 #define FDUNIT(dev) (minor(dev) / 8) 73 #define FDTYPE(dev) (minor(dev) % 8) 74 75 /* XXX misuse a flag to identify format operation */ 76 #define B_FORMAT B_XXX 77 #define b_cylin b_resid 78 79 #define FD_DEBUG 80 #ifdef FD_DEBUG 81 int fdc_debug = 0; 82 #endif 83 84 enum fdc_state { 85 DEVIDLE = 0, 86 MOTORWAIT, 87 DOSEEK, 88 SEEKWAIT, 89 SEEKTIMEDOUT, 90 SEEKCOMPLETE, 91 DOIO, 92 IOCOMPLETE, 93 IOTIMEDOUT, 94 DORESET, 95 RESETCOMPLETE, 96 RESETTIMEDOUT, 97 DORECAL, 98 RECALWAIT, 99 RECALTIMEDOUT, 100 RECALCOMPLETE, 101 }; 102 103 /* software state, per controller */ 104 struct fdc_softc { 105 struct device sc_dev; /* boilerplate */ 106 struct intrhand sc_sih; 107 struct intrhand sc_hih; 108 caddr_t sc_reg; 109 struct fd_softc *sc_fd[4]; /* pointers to children */ 110 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 111 enum fdc_state sc_state; 112 int sc_flags; 113 #define FDC_82077 0x01 114 #define FDC_NEEDHEADSETTLE 0x02 115 #define FDC_EIS 0x04 116 int sc_errors; /* number of retries so far */ 117 int sc_overruns; /* number of DMA overruns */ 118 int sc_cfg; /* current configuration */ 119 struct fdcio sc_io; 120 #define sc_reg_msr sc_io.fdcio_reg_msr 121 #define sc_reg_fifo sc_io.fdcio_reg_fifo 122 #define sc_reg_dor sc_io.fdcio_reg_dor 123 #define sc_reg_drs sc_io.fdcio_reg_msr 124 #define sc_istate sc_io.fdcio_istate 125 #define sc_data sc_io.fdcio_data 126 #define sc_tc sc_io.fdcio_tc 127 #define sc_nstat sc_io.fdcio_nstat 128 #define sc_status sc_io.fdcio_status 129 #define sc_intrcnt sc_io.fdcio_intrcnt 130 }; 131 132 #ifndef FDC_C_HANDLER 133 extern struct fdcio *fdciop; 134 #endif 135 136 /* controller driver configuration */ 137 int fdcmatch __P((struct device *, void *, void *)); 138 void fdcattach __P((struct device *, struct device *, void *)); 139 140 struct cfattach fdc_ca = { 141 sizeof(struct fdc_softc), fdcmatch, fdcattach 142 }; 143 144 struct cfdriver fdc_cd = { 145 NULL, "fdc", DV_DULL 146 }; 147 148 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 149 150 /* 151 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 152 * we tell them apart. 153 */ 154 struct fd_type { 155 int sectrac; /* sectors per track */ 156 int heads; /* number of heads */ 157 int seccyl; /* sectors per cylinder */ 158 int secsize; /* size code for sectors */ 159 int datalen; /* data len when secsize = 0 */ 160 int steprate; /* step rate and head unload time */ 161 int gap1; /* gap len between sectors */ 162 int gap2; /* formatting gap */ 163 int tracks; /* total num of tracks */ 164 int size; /* size of disk in sectors */ 165 int step; /* steps per cylinder */ 166 int rate; /* transfer speed code */ 167 int fillbyte; /* format fill byte */ 168 int interleave; /* interleave factor (formatting) */ 169 char *name; 170 }; 171 172 /* The order of entries in the following table is important -- BEWARE! */ 173 struct fd_type fd_types[] = { 174 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 175 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 176 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 177 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 178 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 179 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 180 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 181 }; 182 183 /* software state, per disk (with up to 4 disks per ctlr) */ 184 struct fd_softc { 185 struct device sc_dv; /* generic device info */ 186 struct disk sc_dk; /* generic disk info */ 187 188 struct fd_type *sc_deftype; /* default type descriptor */ 189 struct fd_type *sc_type; /* current type descriptor */ 190 191 daddr_t sc_blkno; /* starting block number */ 192 int sc_bcount; /* byte count left */ 193 int sc_skip; /* bytes already transferred */ 194 int sc_nblks; /* number of blocks currently tranferring */ 195 int sc_nbytes; /* number of bytes currently tranferring */ 196 197 int sc_drive; /* physical unit number */ 198 int sc_flags; 199 #define FD_OPEN 0x01 /* it's open */ 200 #define FD_MOTOR 0x02 /* motor should be on */ 201 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 202 int sc_cylin; /* where we think the head is */ 203 int sc_opts; /* user-set options */ 204 205 void *sc_sdhook; /* shutdownhook cookie */ 206 207 TAILQ_ENTRY(fd_softc) sc_drivechain; 208 int sc_ops; /* I/O ops since last switch */ 209 struct buf sc_q; /* head of buf chain */ 210 }; 211 212 /* floppy driver configuration */ 213 int fdmatch __P((struct device *, void *, void *)); 214 void fdattach __P((struct device *, struct device *, void *)); 215 216 struct cfattach fd_ca = { 217 sizeof(struct fd_softc), fdmatch, fdattach 218 }; 219 220 struct cfdriver fd_cd = { 221 NULL, "fd", DV_DISK 222 }; 223 224 void fdgetdisklabel __P((dev_t)); 225 int fd_get_parms __P((struct fd_softc *)); 226 void fdstrategy __P((struct buf *)); 227 void fdstart __P((struct fd_softc *)); 228 int fdprint __P((void *, const char *)); 229 230 struct dkdriver fddkdriver = { fdstrategy }; 231 232 struct fd_type *fd_nvtotype __P((char *, int, int)); 233 void fd_set_motor __P((struct fdc_softc *fdc)); 234 void fd_motor_off __P((void *arg)); 235 void fd_motor_on __P((void *arg)); 236 int fdcresult __P((struct fdc_softc *fdc)); 237 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 238 void fdcstart __P((struct fdc_softc *fdc)); 239 void fdcstatus __P((struct device *dv, int n, char *s)); 240 void fdc_reset __P((struct fdc_softc *fdc)); 241 void fdctimeout __P((void *arg)); 242 void fdcpseudointr __P((void *arg)); 243 #ifdef FDC_C_HANDLER 244 int fdchwintr __P((struct fdc_softc *)); 245 #else 246 void fdchwintr __P((void)); 247 #endif 248 int fdcswintr __P((struct fdc_softc *)); 249 int fdcstate __P((struct fdc_softc *)); 250 void fdcretry __P((struct fdc_softc *fdc)); 251 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 252 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 253 void fd_do_eject __P((void)); 254 void fd_mountroot_hook __P((struct device *)); 255 static void fdconf __P((struct fdc_softc *)); 256 257 #if PIL_FDSOFT == 4 258 #define IE_FDSOFT IE_L4 259 #else 260 #error 4 261 #endif 262 263 #ifdef FDC_C_HANDLER 264 #if defined(SUN4M) 265 #define FD_SET_SWINTR do { \ 266 if (CPU_ISSUN4M) \ 267 raise(0, PIL_FDSOFT); \ 268 else \ 269 ienab_bis(IE_L4); \ 270 } while(0) 271 #else 272 #define AUDIO_SET_SWINTR ienab_bis(IE_FDSOFT) 273 #endif /* defined(SUN4M) */ 274 #endif /* FDC_C_HANDLER */ 275 276 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 277 278 int 279 fdcmatch(parent, match, aux) 280 struct device *parent; 281 void *match, *aux; 282 { 283 register struct confargs *ca = aux; 284 register struct romaux *ra = &ca->ca_ra; 285 286 /* 287 * Floppy doesn't exist on sun4. 288 */ 289 if (CPU_ISSUN4) 290 return (0); 291 292 /* 293 * Floppy controller is on mainbus on sun4c. 294 */ 295 if ((CPU_ISSUN4C) && (ca->ca_bustype != BUS_MAIN)) 296 return (0); 297 298 /* 299 * Floppy controller is on obio on sun4m. 300 */ 301 if ((CPU_ISSUN4M) && (ca->ca_bustype != BUS_OBIO)) 302 return (0); 303 304 /* Sun PROMs call the controller an "fd" or "SUNW,fdtwo" */ 305 if (strcmp(OBP_FDNAME, ra->ra_name)) 306 return (0); 307 308 if (ca->ca_ra.ra_vaddr && 309 probeget(ca->ca_ra.ra_vaddr, 1) == -1) { 310 return (0); 311 } 312 313 return (1); 314 } 315 316 /* 317 * Arguments passed between fdcattach and fdprobe. 318 */ 319 struct fdc_attach_args { 320 int fa_drive; 321 struct bootpath *fa_bootpath; 322 struct fd_type *fa_deftype; 323 }; 324 325 /* 326 * Print the location of a disk drive (called just before attaching the 327 * the drive). If `fdc' is not NULL, the drive was found but was not 328 * in the system config file; print the drive name as well. 329 * Return QUIET (config_find ignores this if the device was configured) to 330 * avoid printing `fdN not configured' messages. 331 */ 332 int 333 fdprint(aux, fdc) 334 void *aux; 335 const char *fdc; 336 { 337 register struct fdc_attach_args *fa = aux; 338 339 if (!fdc) 340 printf(" drive %d", fa->fa_drive); 341 return (QUIET); 342 } 343 344 static void 345 fdconf(fdc) 346 struct fdc_softc *fdc; 347 { 348 int vroom; 349 350 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 351 return; 352 353 /* 354 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 355 * the PROM thinks is appropriate. 356 */ 357 if ((vroom = fdc->sc_status[7]) == 0) 358 vroom = 0x64; 359 360 /* Configure controller to use FIFO and Implied Seek */ 361 out_fdc(fdc, NE7CMD_CFG); 362 out_fdc(fdc, vroom); 363 out_fdc(fdc, fdc->sc_cfg); 364 out_fdc(fdc, 0); /* PRETRK */ 365 /* No result phase */ 366 } 367 368 void 369 fdcattach(parent, self, aux) 370 struct device *parent, *self; 371 void *aux; 372 { 373 register struct confargs *ca = aux; 374 struct fdc_softc *fdc = (void *)self; 375 struct fdc_attach_args fa; 376 struct bootpath *bp; 377 int pri; 378 char code; 379 380 if (ca->ca_ra.ra_vaddr) 381 fdc->sc_reg = (caddr_t)ca->ca_ra.ra_vaddr; 382 else 383 fdc->sc_reg = (caddr_t)mapiodev(ca->ca_ra.ra_reg, 0, 384 ca->ca_ra.ra_len, 385 ca->ca_bustype); 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 void *match, *aux; 513 { 514 struct fdc_softc *fdc = (void *)parent; 515 struct fdc_attach_args *fa = aux; 516 int drive = fa->fa_drive; 517 int n, ok; 518 519 if (drive > 0) 520 /* XXX - for now, punt > 1 drives */ 521 return (0); 522 523 if (fdc->sc_flags & FDC_82077) { 524 /* select drive and turn on motor */ 525 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 526 /* wait for motor to spin up */ 527 delay(250000); 528 } else { 529 auxregbisc(AUXIO_FDS, 0); 530 } 531 fdc->sc_nstat = 0; 532 out_fdc(fdc, NE7CMD_RECAL); 533 out_fdc(fdc, drive); 534 /* wait for recalibrate */ 535 for (n = 0; n < 10000; n++) { 536 delay(1000); 537 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 538 /* wait a bit longer till device *really* is ready */ 539 delay(100000); 540 if (out_fdc(fdc, NE7CMD_SENSEI)) 541 break; 542 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 543 /* 544 * Got `invalid command'; we interpret it 545 * to mean that the re-calibrate hasn't in 546 * fact finished yet 547 */ 548 continue; 549 break; 550 } 551 } 552 n = fdc->sc_nstat; 553 #ifdef FD_DEBUG 554 if (fdc_debug) { 555 int i; 556 printf("fdprobe: %d stati:", n); 557 for (i = 0; i < n; i++) 558 printf(" %x", fdc->sc_status[i]); 559 printf("\n"); 560 } 561 #endif 562 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 563 564 /* turn off motor */ 565 if (fdc->sc_flags & FDC_82077) { 566 /* select drive and turn on motor */ 567 *fdc->sc_reg_dor = FDO_FRST; 568 } else { 569 auxregbisc(0, AUXIO_FDS); 570 } 571 572 return (ok); 573 } 574 575 /* 576 * Controller is working, and drive responded. Attach it. 577 */ 578 void 579 fdattach(parent, self, aux) 580 struct device *parent, *self; 581 void *aux; 582 { 583 struct fdc_softc *fdc = (void *)parent; 584 struct fd_softc *fd = (void *)self; 585 struct fdc_attach_args *fa = aux; 586 struct fd_type *type = fa->fa_deftype; 587 int drive = fa->fa_drive; 588 589 /* XXX Allow `flags' to override device type? */ 590 591 if (type) 592 printf(": %s %d cyl, %d head, %d sec\n", type->name, 593 type->tracks, type->heads, type->sectrac); 594 else 595 printf(": density unknown\n"); 596 597 fd->sc_cylin = -1; 598 fd->sc_drive = drive; 599 fd->sc_deftype = type; 600 fdc->sc_fd[drive] = fd; 601 602 /* 603 * Initialize and attach the disk structure. 604 */ 605 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 606 fd->sc_dk.dk_driver = &fddkdriver; 607 disk_attach(&fd->sc_dk); 608 609 /* 610 * We're told if we're the boot device in fdcattach(). 611 */ 612 if (fa->fa_bootpath) 613 fa->fa_bootpath->dev = &fd->sc_dv; 614 615 /* 616 * Establish a mountroot_hook anyway in case we booted 617 * with RB_ASKNAME and get selected as the boot device. 618 */ 619 mountroot_hook_establish(fd_mountroot_hook, &fd->sc_dv); 620 621 /* Make sure the drive motor gets turned off at shutdown time. */ 622 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 623 624 /* XXX Need to do some more fiddling with sc_dk. */ 625 dk_establish(&fd->sc_dk, &fd->sc_dv); 626 } 627 628 __inline struct fd_type * 629 fd_dev_to_type(fd, dev) 630 struct fd_softc *fd; 631 dev_t dev; 632 { 633 int type = FDTYPE(dev); 634 635 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 636 return (NULL); 637 return (type ? &fd_types[type - 1] : fd->sc_deftype); 638 } 639 640 void 641 fdstrategy(bp) 642 register struct buf *bp; /* IO operation to perform */ 643 { 644 struct fd_softc *fd; 645 int unit = FDUNIT(bp->b_dev); 646 int sz; 647 int s; 648 649 /* Valid unit, controller, and request? */ 650 if (unit >= fd_cd.cd_ndevs || 651 (fd = fd_cd.cd_devs[unit]) == 0 || 652 bp->b_blkno < 0 || 653 (bp->b_bcount % FDC_BSIZE) != 0) { 654 bp->b_error = EINVAL; 655 goto bad; 656 } 657 658 /* If it's a null transfer, return immediately. */ 659 if (bp->b_bcount == 0) 660 goto done; 661 662 sz = howmany(bp->b_bcount, FDC_BSIZE); 663 664 if (bp->b_blkno + sz > fd->sc_type->size) { 665 sz = fd->sc_type->size - bp->b_blkno; 666 if (sz == 0) { 667 /* If exactly at end of disk, return EOF. */ 668 bp->b_resid = bp->b_bcount; 669 goto done; 670 } 671 if (sz < 0) { 672 /* If past end of disk, return EINVAL. */ 673 bp->b_error = EINVAL; 674 goto bad; 675 } 676 /* Otherwise, truncate request. */ 677 bp->b_bcount = sz << DEV_BSHIFT; 678 } 679 680 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 681 682 #ifdef FD_DEBUG 683 if (fdc_debug > 1) 684 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 685 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 686 #endif 687 688 /* Queue transfer on drive, activate drive and controller if idle. */ 689 s = splbio(); 690 disksort(&fd->sc_q, bp); 691 untimeout(fd_motor_off, fd); /* a good idea */ 692 if (!fd->sc_q.b_active) 693 fdstart(fd); 694 #ifdef DIAGNOSTIC 695 else { 696 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 697 if (fdc->sc_state == DEVIDLE) { 698 printf("fdstrategy: controller inactive\n"); 699 fdcstart(fdc); 700 } 701 } 702 #endif 703 splx(s); 704 return; 705 706 bad: 707 bp->b_flags |= B_ERROR; 708 done: 709 /* Toss transfer; we're done early. */ 710 biodone(bp); 711 } 712 713 void 714 fdstart(fd) 715 struct fd_softc *fd; 716 { 717 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 718 int active = fdc->sc_drives.tqh_first != 0; 719 720 /* Link into controller queue. */ 721 fd->sc_q.b_active = 1; 722 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 723 724 /* If controller not already active, start it. */ 725 if (!active) 726 fdcstart(fdc); 727 } 728 729 void 730 fdfinish(fd, bp) 731 struct fd_softc *fd; 732 struct buf *bp; 733 { 734 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 735 736 /* 737 * Move this drive to the end of the queue to give others a `fair' 738 * chance. We only force a switch if N operations are completed while 739 * another drive is waiting to be serviced, since there is a long motor 740 * startup delay whenever we switch. 741 */ 742 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 743 fd->sc_ops = 0; 744 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 745 if (bp->b_actf) { 746 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 747 } else 748 fd->sc_q.b_active = 0; 749 } 750 bp->b_resid = fd->sc_bcount; 751 fd->sc_skip = 0; 752 fd->sc_q.b_actf = bp->b_actf; 753 754 biodone(bp); 755 /* turn off motor 5s from now */ 756 timeout(fd_motor_off, fd, 5 * hz); 757 fdc->sc_state = DEVIDLE; 758 } 759 760 void 761 fdc_reset(fdc) 762 struct fdc_softc *fdc; 763 { 764 if (fdc->sc_flags & FDC_82077) { 765 *fdc->sc_reg_dor = FDO_MOEN(0); 766 } 767 768 *fdc->sc_reg_drs = DRS_RESET; 769 delay(10); 770 *fdc->sc_reg_drs = 0; 771 #ifdef FD_DEBUG 772 if (fdc_debug) 773 printf("fdc reset\n"); 774 #endif 775 } 776 777 void 778 fd_set_motor(fdc) 779 struct fdc_softc *fdc; 780 { 781 struct fd_softc *fd; 782 u_char status; 783 int n; 784 785 if (fdc->sc_flags & FDC_82077) { 786 status = FDO_FRST | FDO_FDMAEN; 787 if ((fd = fdc->sc_drives.tqh_first) != NULL) 788 status |= fd->sc_drive; 789 790 for (n = 0; n < 4; n++) 791 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 792 status |= FDO_MOEN(n); 793 *fdc->sc_reg_dor = status; 794 } else { 795 int on = 0; 796 797 for (n = 0; n < 4; n++) 798 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 799 on = 1; 800 if (on) { 801 auxregbisc(AUXIO_FDS, 0); 802 } else { 803 auxregbisc(0, AUXIO_FDS); 804 } 805 } 806 } 807 808 void 809 fd_motor_off(arg) 810 void *arg; 811 { 812 struct fd_softc *fd = arg; 813 int s; 814 815 s = splbio(); 816 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 817 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 818 splx(s); 819 } 820 821 void 822 fd_motor_on(arg) 823 void *arg; 824 { 825 struct fd_softc *fd = arg; 826 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 827 int s; 828 829 s = splbio(); 830 fd->sc_flags &= ~FD_MOTOR_WAIT; 831 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 832 (void) fdcstate(fdc); 833 splx(s); 834 } 835 836 int 837 fdcresult(fdc) 838 struct fdc_softc *fdc; 839 { 840 u_char i; 841 int j = 100000, 842 n = 0; 843 844 for (; j; j--) { 845 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 846 if (i == NE7_RQM) 847 return (fdc->sc_nstat = n); 848 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 849 if (n >= sizeof(fdc->sc_status)) { 850 log(LOG_ERR, "fdcresult: overrun\n"); 851 return (-1); 852 } 853 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 854 } else 855 delay(10); 856 } 857 log(LOG_ERR, "fdcresult: timeout\n"); 858 return (fdc->sc_nstat = -1); 859 } 860 861 int 862 out_fdc(fdc, x) 863 struct fdc_softc *fdc; 864 u_char x; 865 { 866 int i = 100000; 867 868 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 869 delay(1); 870 if (i <= 0) 871 return (-1); 872 873 *fdc->sc_reg_fifo = x; 874 return (0); 875 } 876 877 int 878 fdopen(dev, flags, fmt, p) 879 dev_t dev; 880 int flags, fmt; 881 struct proc *p; 882 { 883 int unit, pmask; 884 struct fd_softc *fd; 885 struct fd_type *type; 886 887 unit = FDUNIT(dev); 888 if (unit >= fd_cd.cd_ndevs) 889 return (ENXIO); 890 fd = fd_cd.cd_devs[unit]; 891 if (fd == 0) 892 return (ENXIO); 893 type = fd_dev_to_type(fd, dev); 894 if (type == NULL) 895 return (ENXIO); 896 897 if ((fd->sc_flags & FD_OPEN) != 0 && 898 fd->sc_type != type) 899 return (EBUSY); 900 901 fd->sc_type = type; 902 fd->sc_cylin = -1; 903 fd->sc_flags |= FD_OPEN; 904 905 /* 906 * Only update the disklabel if we're not open anywhere else. 907 */ 908 if (fd->sc_dk.dk_openmask == 0) 909 fdgetdisklabel(dev); 910 911 pmask = (1 << DISKPART(dev)); 912 913 switch (fmt) { 914 case S_IFCHR: 915 fd->sc_dk.dk_copenmask |= pmask; 916 break; 917 918 case S_IFBLK: 919 fd->sc_dk.dk_bopenmask |= pmask; 920 break; 921 } 922 fd->sc_dk.dk_openmask = 923 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 924 925 return (0); 926 } 927 928 int 929 fdclose(dev, flags, fmt, p) 930 dev_t dev; 931 int flags, fmt; 932 struct proc *p; 933 { 934 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 935 int pmask = (1 << DISKPART(dev)); 936 937 fd->sc_flags &= ~FD_OPEN; 938 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 939 940 switch (fmt) { 941 case S_IFCHR: 942 fd->sc_dk.dk_copenmask &= ~pmask; 943 break; 944 945 case S_IFBLK: 946 fd->sc_dk.dk_bopenmask &= ~pmask; 947 break; 948 } 949 fd->sc_dk.dk_openmask = 950 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 951 952 return (0); 953 } 954 955 int 956 fdread(dev, uio, flag) 957 dev_t dev; 958 struct uio *uio; 959 int flag; 960 { 961 962 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 963 } 964 965 int 966 fdwrite(dev, uio, flag) 967 dev_t dev; 968 struct uio *uio; 969 int flag; 970 { 971 972 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 973 } 974 975 void 976 fdcstart(fdc) 977 struct fdc_softc *fdc; 978 { 979 980 #ifdef DIAGNOSTIC 981 /* only got here if controller's drive queue was inactive; should 982 be in idle state */ 983 if (fdc->sc_state != DEVIDLE) { 984 printf("fdcstart: not idle\n"); 985 return; 986 } 987 #endif 988 (void) fdcstate(fdc); 989 } 990 991 void 992 fdcstatus(dv, n, s) 993 struct device *dv; 994 int n; 995 char *s; 996 { 997 struct fdc_softc *fdc = (void *)dv->dv_parent; 998 char bits[64]; 999 #if 0 1000 /* 1001 * A 82072 seems to return <invalid command> on 1002 * gratuitous Sense Interrupt commands. 1003 */ 1004 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1005 out_fdc(fdc, NE7CMD_SENSEI); 1006 (void) fdcresult(fdc); 1007 n = 2; 1008 } 1009 #endif 1010 1011 /* Just print last status */ 1012 n = fdc->sc_nstat; 1013 1014 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1015 1016 switch (n) { 1017 case 0: 1018 printf("\n"); 1019 break; 1020 case 2: 1021 printf(" (st0 %s cyl %d)\n", 1022 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1023 bits, sizeof(bits)), fdc->sc_status[1]); 1024 break; 1025 case 7: 1026 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1027 NE7_ST0BITS, bits, sizeof(bits))); 1028 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1029 NE7_ST1BITS, bits, sizeof(bits))); 1030 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1031 NE7_ST2BITS, bits, sizeof(bits))); 1032 printf(" cyl %d head %d sec %d)\n", 1033 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1034 break; 1035 #ifdef DIAGNOSTIC 1036 default: 1037 printf(" fdcstatus: weird size: %d\n", n); 1038 break; 1039 #endif 1040 } 1041 } 1042 1043 void 1044 fdctimeout(arg) 1045 void *arg; 1046 { 1047 struct fdc_softc *fdc = arg; 1048 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1049 int s; 1050 1051 s = splbio(); 1052 fdcstatus(&fd->sc_dv, 0, "timeout"); 1053 1054 if (fd->sc_q.b_actf) 1055 fdc->sc_state++; 1056 else 1057 fdc->sc_state = DEVIDLE; 1058 1059 (void) fdcstate(fdc); 1060 splx(s); 1061 } 1062 1063 void 1064 fdcpseudointr(arg) 1065 void *arg; 1066 { 1067 struct fdc_softc *fdc = arg; 1068 int s; 1069 1070 /* Just ensure it has the right spl. */ 1071 s = splbio(); 1072 (void) fdcstate(fdc); 1073 splx(s); 1074 } 1075 1076 1077 #ifdef FDC_C_HANDLER 1078 /* 1079 * hardware interrupt entry point: must be converted to `fast' 1080 * (in-window) handler. 1081 */ 1082 int 1083 fdchwintr(fdc) 1084 struct fdc_softc *fdc; 1085 { 1086 struct buf *bp; 1087 int read; 1088 1089 switch (fdc->sc_istate) { 1090 case ISTATE_IDLE: 1091 return (0); 1092 case ISTATE_SENSEI: 1093 out_fdc(fdc, NE7CMD_SENSEI); 1094 fdcresult(fdc); 1095 fdc->sc_istate = ISTATE_IDLE; 1096 FD_SET_SWINTR; 1097 return (1); 1098 case ISTATE_SPURIOUS: 1099 auxregbisc(0, AUXIO_FDS); /* Does this help? */ 1100 fdcresult(fdc); 1101 fdc->sc_istate = ISTATE_SPURIOUS; 1102 printf("fdc: stray hard interrupt... "); 1103 FD_SET_SWINTR; 1104 return (1); 1105 case ISTATE_DMA: 1106 break; 1107 default: 1108 printf("fdc: goofed ...\n"); 1109 return (1); 1110 } 1111 1112 read = bp->b_flags & B_READ; 1113 for (;;) { 1114 register int msr; 1115 1116 msr = *fdc->sc_reg_msr; 1117 1118 if ((msr & NE7_RQM) == 0) 1119 break; 1120 1121 if ((msr & NE7_NDM) == 0) { 1122 fdcresult(fdc); 1123 fdc->sc_istate = ISTATE_IDLE; 1124 ienab_bis(IE_FDSOFT); 1125 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1126 break; 1127 } 1128 1129 if (msr & NE7_DIO) { 1130 #ifdef DIAGNOSTIC 1131 if (!read) 1132 printf("fdxfer: false read\n"); 1133 #endif 1134 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1135 } else { 1136 #ifdef DIAGNOSTIC 1137 if (read) 1138 printf("fdxfer: false write\n"); 1139 #endif 1140 *fdc->sc_reg_fifo = *fdc->sc_data++; 1141 } 1142 if (--fdc->sc_tc == 0) { 1143 auxregbisc(AUXIO_FTC, 0); 1144 fdc->sc_istate = ISTATE_IDLE; 1145 delay(10); 1146 auxregbisc(0, AUXIO_FTC); 1147 fdcresult(fdc); 1148 FD_SET_SWINTR; 1149 break; 1150 } 1151 } 1152 return (1); 1153 } 1154 #endif 1155 1156 int 1157 fdcswintr(fdc) 1158 struct fdc_softc *fdc; 1159 { 1160 int s; 1161 1162 if (fdc->sc_istate != ISTATE_DONE) 1163 return (0); 1164 1165 fdc->sc_istate = ISTATE_IDLE; 1166 s = splbio(); 1167 fdcstate(fdc); 1168 splx(s); 1169 return (1); 1170 } 1171 1172 int 1173 fdcstate(fdc) 1174 struct fdc_softc *fdc; 1175 { 1176 #define st0 fdc->sc_status[0] 1177 #define st1 fdc->sc_status[1] 1178 #define cyl fdc->sc_status[1] 1179 #define OUT_FDC(fdc, c, s) \ 1180 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1181 1182 struct fd_softc *fd; 1183 struct buf *bp; 1184 int read, head, sec, nblks; 1185 struct fd_type *type; 1186 1187 1188 if (fdc->sc_istate != ISTATE_IDLE) { 1189 /* Trouble... */ 1190 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1191 fdc->sc_state, fdc->sc_istate); 1192 fdc->sc_istate = ISTATE_IDLE; 1193 if (fdc->sc_state == RESETCOMPLETE || 1194 fdc->sc_state == RESETTIMEDOUT) { 1195 panic("fdcintr: spurious interrupt can't be cleared"); 1196 } 1197 goto doreset; 1198 } 1199 1200 loop: 1201 /* Is there a drive for the controller to do a transfer with? */ 1202 fd = fdc->sc_drives.tqh_first; 1203 if (fd == NULL) { 1204 fdc->sc_state = DEVIDLE; 1205 return (0); 1206 } 1207 1208 /* Is there a transfer to this drive? If not, deactivate drive. */ 1209 bp = fd->sc_q.b_actf; 1210 if (bp == NULL) { 1211 fd->sc_ops = 0; 1212 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1213 fd->sc_q.b_active = 0; 1214 goto loop; 1215 } 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 /* fall through */ 1251 case DOSEEK: 1252 doseek: 1253 if (fdc->sc_flags & FDC_EIS) { 1254 fd->sc_cylin = bp->b_cylin; 1255 /* We use implied seek */ 1256 goto doio; 1257 } 1258 1259 if (fd->sc_cylin == bp->b_cylin) 1260 goto doio; 1261 1262 /* specify command */ 1263 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1264 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1265 OUT_FDC(fdc, 6, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1266 1267 fdc->sc_istate = ISTATE_SENSEI; 1268 /* seek function */ 1269 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1270 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1271 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1272 1273 fd->sc_cylin = -1; 1274 fdc->sc_state = SEEKWAIT; 1275 fdc->sc_nstat = 0; 1276 1277 fd->sc_dk.dk_seek++; 1278 disk_busy(&fd->sc_dk); 1279 1280 timeout(fdctimeout, fdc, 4 * hz); 1281 return (1); 1282 1283 case DOIO: 1284 doio: 1285 type = fd->sc_type; 1286 sec = fd->sc_blkno % type->seccyl; 1287 nblks = type->seccyl - sec; 1288 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1289 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1290 fd->sc_nblks = nblks; 1291 fd->sc_nbytes = nblks * FDC_BSIZE; 1292 head = sec / type->sectrac; 1293 sec -= head * type->sectrac; 1294 #ifdef DIAGNOSTIC 1295 {int block; 1296 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1297 if (block != fd->sc_blkno) { 1298 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1299 #ifdef DDB 1300 Debugger(); 1301 #endif 1302 }} 1303 #endif 1304 read = bp->b_flags & B_READ; 1305 1306 /* Setup for pseudo DMA */ 1307 fdc->sc_data = bp->b_data + fd->sc_skip; 1308 fdc->sc_tc = fd->sc_nbytes; 1309 1310 *fdc->sc_reg_drs = type->rate; 1311 #ifdef FD_DEBUG 1312 if (fdc_debug > 1) 1313 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1314 read ? "read" : "write", fd->sc_drive, 1315 fd->sc_cylin, head, sec, nblks); 1316 #endif 1317 fdc->sc_state = IOCOMPLETE; 1318 fdc->sc_istate = ISTATE_DMA; 1319 fdc->sc_nstat = 0; 1320 if (read) 1321 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); /* READ */ 1322 else 1323 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); /* WRITE */ 1324 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1325 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /* track */ 1326 OUT_FDC(fdc, head, IOTIMEDOUT); 1327 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /* sector +1 */ 1328 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/* sector size */ 1329 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/* sectors/track */ 1330 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /* gap1 size */ 1331 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/* data length */ 1332 1333 disk_busy(&fd->sc_dk); 1334 1335 /* allow 2 seconds for operation */ 1336 timeout(fdctimeout, fdc, 2 * hz); 1337 return (1); /* will return later */ 1338 1339 case SEEKWAIT: 1340 untimeout(fdctimeout, fdc); 1341 fdc->sc_state = SEEKCOMPLETE; 1342 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1343 /* allow 1/50 second for heads to settle */ 1344 timeout(fdcpseudointr, fdc, hz / 50); 1345 return (1); /* will return later */ 1346 } 1347 1348 case SEEKCOMPLETE: 1349 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1350 1351 /* Make sure seek really happened. */ 1352 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1353 cyl != bp->b_cylin * fd->sc_type->step) { 1354 #ifdef FD_DEBUG 1355 if (fdc_debug) 1356 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1357 #endif 1358 fdcretry(fdc); 1359 goto loop; 1360 } 1361 fd->sc_cylin = bp->b_cylin; 1362 goto doio; 1363 1364 case IOTIMEDOUT: 1365 auxregbisc(AUXIO_FTC, 0); 1366 delay(10); 1367 auxregbisc(0, AUXIO_FTC); 1368 (void)fdcresult(fdc); 1369 case SEEKTIMEDOUT: 1370 case RECALTIMEDOUT: 1371 case RESETTIMEDOUT: 1372 fdcretry(fdc); 1373 goto loop; 1374 1375 case IOCOMPLETE: /* IO DONE, post-analyze */ 1376 untimeout(fdctimeout, fdc); 1377 1378 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1379 1380 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1381 #ifdef FD_DEBUG 1382 if (fdc_debug) { 1383 fdcstatus(&fd->sc_dv, 7, 1384 bp->b_flags & B_READ 1385 ? "read failed" : "write failed"); 1386 printf("blkno %d nblks %d tc %d\n", 1387 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1388 } 1389 #endif 1390 if (fdc->sc_nstat == 7 && 1391 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1392 1393 /* 1394 * Silently retry overruns if no other 1395 * error bit is set. Adjust threshold. 1396 */ 1397 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1398 if (thr < 15) { 1399 thr++; 1400 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1401 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1402 #ifdef FD_DEBUG 1403 if (fdc_debug) 1404 printf("fdc: %d -> threshold\n", thr); 1405 #endif 1406 fdconf(fdc); 1407 fdc->sc_overruns = 0; 1408 } 1409 if (++fdc->sc_overruns < 3) { 1410 fdc->sc_state = DOIO; 1411 goto loop; 1412 } 1413 } 1414 fdcretry(fdc); 1415 goto loop; 1416 } 1417 if (fdc->sc_errors) { 1418 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1419 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1420 printf("\n"); 1421 fdc->sc_errors = 0; 1422 } else { 1423 if (--fdc->sc_overruns < -20) { 1424 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1425 if (thr > 0) { 1426 thr--; 1427 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1428 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1429 #ifdef FD_DEBUG 1430 if (fdc_debug) 1431 printf("fdc: %d -> threshold\n", thr); 1432 #endif 1433 fdconf(fdc); 1434 } 1435 fdc->sc_overruns = 0; 1436 } 1437 } 1438 fd->sc_blkno += fd->sc_nblks; 1439 fd->sc_skip += fd->sc_nbytes; 1440 fd->sc_bcount -= fd->sc_nbytes; 1441 if (fd->sc_bcount > 0) { 1442 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1443 goto doseek; 1444 } 1445 fdfinish(fd, bp); 1446 goto loop; 1447 1448 case DORESET: 1449 doreset: 1450 /* try a reset, keep motor on */ 1451 fd_set_motor(fdc); 1452 delay(100); 1453 fdc_reset(fdc); 1454 fdc->sc_nstat = 0; 1455 fdc->sc_istate = ISTATE_SENSEI; 1456 fdc->sc_state = RESETCOMPLETE; 1457 timeout(fdctimeout, fdc, hz / 2); 1458 return (1); /* will return later */ 1459 1460 case RESETCOMPLETE: 1461 untimeout(fdctimeout, fdc); 1462 fdconf(fdc); 1463 1464 /* fall through */ 1465 case DORECAL: 1466 fdc->sc_state = RECALWAIT; 1467 fdc->sc_istate = ISTATE_SENSEI; 1468 fdc->sc_nstat = 0; 1469 /* recalibrate function */ 1470 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1471 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1472 timeout(fdctimeout, fdc, 5 * hz); 1473 return (1); /* will return later */ 1474 1475 case RECALWAIT: 1476 untimeout(fdctimeout, fdc); 1477 fdc->sc_state = RECALCOMPLETE; 1478 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1479 /* allow 1/30 second for heads to settle */ 1480 timeout(fdcpseudointr, fdc, hz / 30); 1481 return (1); /* will return later */ 1482 } 1483 1484 case RECALCOMPLETE: 1485 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1486 #ifdef FD_DEBUG 1487 if (fdc_debug) 1488 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1489 #endif 1490 fdcretry(fdc); 1491 goto loop; 1492 } 1493 fd->sc_cylin = 0; 1494 goto doseek; 1495 1496 case MOTORWAIT: 1497 if (fd->sc_flags & FD_MOTOR_WAIT) 1498 return (1); /* time's not up yet */ 1499 goto doseek; 1500 1501 default: 1502 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1503 return (1); 1504 } 1505 #ifdef DIAGNOSTIC 1506 panic("fdcintr: impossible"); 1507 #endif 1508 #undef st0 1509 #undef st1 1510 #undef cyl 1511 } 1512 1513 void 1514 fdcretry(fdc) 1515 struct fdc_softc *fdc; 1516 { 1517 char bits[64]; 1518 struct fd_softc *fd; 1519 struct buf *bp; 1520 1521 fd = fdc->sc_drives.tqh_first; 1522 bp = fd->sc_q.b_actf; 1523 1524 fdc->sc_overruns = 0; 1525 if (fd->sc_opts & FDOPT_NORETRY) 1526 goto fail; 1527 1528 switch (fdc->sc_errors) { 1529 case 0: 1530 /* try again */ 1531 fdc->sc_state = 1532 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1533 break; 1534 1535 case 1: case 2: case 3: 1536 /* didn't work; try recalibrating */ 1537 fdc->sc_state = DORECAL; 1538 break; 1539 1540 case 4: 1541 /* still no go; reset the bastard */ 1542 fdc->sc_state = DORESET; 1543 break; 1544 1545 default: 1546 fail: 1547 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1548 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1549 fd->sc_skip / FDC_BSIZE, 1550 (struct disklabel *)NULL); 1551 1552 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1553 NE7_ST0BITS, bits, sizeof(bits))); 1554 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1555 NE7_ST1BITS, bits, sizeof(bits))); 1556 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1557 NE7_ST2BITS, bits, sizeof(bits))); 1558 printf(" cyl %d head %d sec %d)\n", 1559 fdc->sc_status[3], fdc->sc_status[4], 1560 fdc->sc_status[5]); 1561 } 1562 1563 bp->b_flags |= B_ERROR; 1564 bp->b_error = EIO; 1565 fdfinish(fd, bp); 1566 } 1567 fdc->sc_errors++; 1568 } 1569 1570 int 1571 fdsize(dev) 1572 dev_t dev; 1573 { 1574 1575 /* Swapping to floppies would not make sense. */ 1576 return (-1); 1577 } 1578 1579 int 1580 fddump(dev, blkno, va, size) 1581 dev_t dev; 1582 daddr_t blkno; 1583 caddr_t va; 1584 size_t size; 1585 { 1586 1587 /* Not implemented. */ 1588 return (EINVAL); 1589 } 1590 1591 int 1592 fdioctl(dev, cmd, addr, flag, p) 1593 dev_t dev; 1594 u_long cmd; 1595 caddr_t addr; 1596 int flag; 1597 struct proc *p; 1598 { 1599 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1600 struct fdformat_parms *form_parms; 1601 struct fdformat_cmd *form_cmd; 1602 struct ne7_fd_formb fd_formb; 1603 int il[FD_MAX_NSEC + 1]; 1604 int i, j; 1605 int error; 1606 1607 switch (cmd) { 1608 case DIOCGDINFO: 1609 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1610 return 0; 1611 1612 case DIOCWLABEL: 1613 if ((flag & FWRITE) == 0) 1614 return EBADF; 1615 /* XXX do something */ 1616 return (0); 1617 1618 case DIOCWDINFO: 1619 if ((flag & FWRITE) == 0) 1620 return (EBADF); 1621 1622 error = setdisklabel(fd->sc_dk.dk_label, 1623 (struct disklabel *)addr, 0, 1624 fd->sc_dk.dk_cpulabel); 1625 if (error) 1626 return (error); 1627 1628 error = writedisklabel(dev, fdstrategy, 1629 fd->sc_dk.dk_label, 1630 fd->sc_dk.dk_cpulabel); 1631 return (error); 1632 1633 case DIOCLOCK: 1634 /* 1635 * Nothing to do here, really. 1636 */ 1637 return (0); 1638 1639 case DIOCEJECT: 1640 fd_do_eject(); 1641 return (0); 1642 1643 case FDIOCGETFORMAT: 1644 form_parms = (struct fdformat_parms *)addr; 1645 form_parms->fdformat_version = FDFORMAT_VERSION; 1646 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1647 form_parms->ncyl = fd->sc_type->tracks; 1648 form_parms->nspt = fd->sc_type->sectrac; 1649 form_parms->ntrk = fd->sc_type->heads; 1650 form_parms->stepspercyl = fd->sc_type->step; 1651 form_parms->gaplen = fd->sc_type->gap2; 1652 form_parms->fillbyte = fd->sc_type->fillbyte; 1653 form_parms->interleave = fd->sc_type->interleave; 1654 switch (fd->sc_type->rate) { 1655 case FDC_500KBPS: 1656 form_parms->xfer_rate = 500 * 1024; 1657 break; 1658 case FDC_300KBPS: 1659 form_parms->xfer_rate = 300 * 1024; 1660 break; 1661 case FDC_250KBPS: 1662 form_parms->xfer_rate = 250 * 1024; 1663 break; 1664 default: 1665 return (EINVAL); 1666 } 1667 return 0; 1668 1669 case FDIOCSETFORMAT: 1670 if ((flag & FWRITE) == 0) 1671 return (EBADF); /* must be opened for writing */ 1672 1673 form_parms = (struct fdformat_parms *)addr; 1674 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1675 return (EINVAL);/* wrong version of formatting prog */ 1676 1677 i = form_parms->nbps >> 7; 1678 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1679 i & ~(1 << (ffs(i)-1))) 1680 /* not a power-of-two multiple of 128 */ 1681 return (EINVAL); 1682 1683 switch (form_parms->xfer_rate) { 1684 case 500 * 1024: 1685 fd->sc_type->rate = FDC_500KBPS; 1686 break; 1687 case 300 * 1024: 1688 fd->sc_type->rate = FDC_300KBPS; 1689 break; 1690 case 250 * 1024: 1691 fd->sc_type->rate = FDC_250KBPS; 1692 break; 1693 default: 1694 return (EINVAL); 1695 } 1696 1697 if (form_parms->nspt > FD_MAX_NSEC || 1698 form_parms->fillbyte > 0xff || 1699 form_parms->interleave > 0xff) 1700 return EINVAL; 1701 fd->sc_type->sectrac = form_parms->nspt; 1702 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1703 return EINVAL; 1704 fd->sc_type->heads = form_parms->ntrk; 1705 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1706 fd->sc_type->secsize = ffs(i)-1; 1707 fd->sc_type->gap2 = form_parms->gaplen; 1708 fd->sc_type->tracks = form_parms->ncyl; 1709 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1710 form_parms->nbps / DEV_BSIZE; 1711 fd->sc_type->step = form_parms->stepspercyl; 1712 fd->sc_type->fillbyte = form_parms->fillbyte; 1713 fd->sc_type->interleave = form_parms->interleave; 1714 return 0; 1715 1716 case FDIOCFORMAT_TRACK: 1717 if((flag & FWRITE) == 0) 1718 /* must be opened for writing */ 1719 return (EBADF); 1720 form_cmd = (struct fdformat_cmd *)addr; 1721 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1722 /* wrong version of formatting prog */ 1723 return (EINVAL); 1724 1725 if (form_cmd->head >= fd->sc_type->heads || 1726 form_cmd->cylinder >= fd->sc_type->tracks) { 1727 return (EINVAL); 1728 } 1729 1730 fd_formb.head = form_cmd->head; 1731 fd_formb.cyl = form_cmd->cylinder; 1732 fd_formb.transfer_rate = fd->sc_type->rate; 1733 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1734 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1735 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1736 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1737 1738 bzero(il,sizeof il); 1739 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1740 while (il[(j%fd_formb.fd_formb_nsecs)+1]) 1741 j++; 1742 il[(j%fd_formb.fd_formb_nsecs)+1] = i; 1743 j += fd->sc_type->interleave; 1744 } 1745 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1746 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1747 fd_formb.fd_formb_headno(i) = form_cmd->head; 1748 fd_formb.fd_formb_secno(i) = il[i+1]; 1749 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1750 } 1751 1752 return fdformat(dev, &fd_formb, p); 1753 1754 case FDIOCGETOPTS: /* get drive options */ 1755 *(int *)addr = fd->sc_opts; 1756 return (0); 1757 1758 case FDIOCSETOPTS: /* set drive options */ 1759 fd->sc_opts = *(int *)addr; 1760 return (0); 1761 1762 #ifdef DEBUG 1763 case _IO('f', 100): 1764 { 1765 int i; 1766 struct fdc_softc *fdc = (struct fdc_softc *) 1767 fd->sc_dv.dv_parent; 1768 1769 out_fdc(fdc, NE7CMD_DUMPREG); 1770 fdcresult(fdc); 1771 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1772 for (i = 0; i < fdc->sc_nstat; i++) 1773 printf(" %x", fdc->sc_status[i]); 1774 printf(">\n"); 1775 } 1776 1777 return (0); 1778 case _IOW('f', 101, int): 1779 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1780 ~CFG_THRHLD_MASK; 1781 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1782 (*(int *)addr & CFG_THRHLD_MASK); 1783 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1784 return (0); 1785 case _IO('f', 102): 1786 { 1787 int i; 1788 struct fdc_softc *fdc = (struct fdc_softc *) 1789 fd->sc_dv.dv_parent; 1790 out_fdc(fdc, NE7CMD_SENSEI); 1791 fdcresult(fdc); 1792 printf("sensei(%d regs): <", fdc->sc_nstat); 1793 for (i=0; i< fdc->sc_nstat; i++) 1794 printf(" 0x%x", fdc->sc_status[i]); 1795 } 1796 printf(">\n"); 1797 return (0); 1798 #endif 1799 default: 1800 return (ENOTTY); 1801 } 1802 1803 #ifdef DIAGNOSTIC 1804 panic("fdioctl: impossible"); 1805 #endif 1806 } 1807 1808 int 1809 fdformat(dev, finfo, p) 1810 dev_t dev; 1811 struct ne7_fd_formb *finfo; 1812 struct proc *p; 1813 { 1814 int rv = 0, s; 1815 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1816 struct fd_type *type = fd->sc_type; 1817 struct buf *bp; 1818 1819 /* set up a buffer header for fdstrategy() */ 1820 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1821 if (bp == 0) 1822 return (ENOBUFS); 1823 1824 PHOLD(p); 1825 bzero((void *)bp, sizeof(struct buf)); 1826 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1827 bp->b_proc = p; 1828 bp->b_dev = dev; 1829 1830 /* 1831 * calculate a fake blkno, so fdstrategy() would initiate a 1832 * seek to the requested cylinder 1833 */ 1834 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1835 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1836 1837 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1838 bp->b_data = (caddr_t)finfo; 1839 1840 #ifdef FD_DEBUG 1841 if (fdc_debug) 1842 printf("fdformat: blkno %x count %lx\n", 1843 bp->b_blkno, bp->b_bcount); 1844 #endif 1845 1846 /* now do the format */ 1847 fdstrategy(bp); 1848 1849 /* ...and wait for it to complete */ 1850 s = splbio(); 1851 while (!(bp->b_flags & B_DONE)) { 1852 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1853 if (rv == EWOULDBLOCK) 1854 break; 1855 } 1856 splx(s); 1857 1858 if (rv == EWOULDBLOCK) { 1859 /* timed out */ 1860 rv = EIO; 1861 biodone(bp); 1862 } 1863 if (bp->b_flags & B_ERROR) { 1864 rv = bp->b_error; 1865 } 1866 PRELE(p); 1867 free(bp, M_TEMP); 1868 return (rv); 1869 } 1870 1871 void 1872 fdgetdisklabel(dev) 1873 dev_t dev; 1874 { 1875 int unit = FDUNIT(dev), i; 1876 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1877 struct disklabel *lp = fd->sc_dk.dk_label; 1878 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1879 1880 bzero(lp, sizeof(struct disklabel)); 1881 bzero(lp, sizeof(struct cpu_disklabel)); 1882 1883 lp->d_type = DTYPE_FLOPPY; 1884 lp->d_secsize = FDC_BSIZE; 1885 lp->d_secpercyl = fd->sc_type->seccyl; 1886 lp->d_nsectors = fd->sc_type->sectrac; 1887 lp->d_ncylinders = fd->sc_type->tracks; 1888 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1889 lp->d_rpm = 3600; /* XXX like it matters... */ 1890 1891 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1892 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1893 lp->d_interleave = 1; 1894 1895 lp->d_partitions[RAW_PART].p_offset = 0; 1896 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1897 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1898 lp->d_npartitions = RAW_PART + 1; 1899 1900 lp->d_magic = DISKMAGIC; 1901 lp->d_magic2 = DISKMAGIC; 1902 lp->d_checksum = dkcksum(lp); 1903 1904 /* 1905 * Call the generic disklabel extraction routine. If there's 1906 * not a label there, fake it. 1907 */ 1908 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1909 strncpy(lp->d_packname, "default label", 1910 sizeof(lp->d_packname)); 1911 /* 1912 * Reset the partition info; it might have gotten 1913 * trashed in readdisklabel(). 1914 * 1915 * XXX Why do we have to do this? readdisklabel() 1916 * should be safe... 1917 */ 1918 for (i = 0; i < MAXPARTITIONS; ++i) { 1919 lp->d_partitions[i].p_offset = 0; 1920 if (i == RAW_PART) { 1921 lp->d_partitions[i].p_size = 1922 lp->d_secpercyl * lp->d_ncylinders; 1923 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1924 } else { 1925 lp->d_partitions[i].p_size = 0; 1926 lp->d_partitions[i].p_fstype = FS_UNUSED; 1927 } 1928 } 1929 lp->d_npartitions = RAW_PART + 1; 1930 } 1931 } 1932 1933 void 1934 fd_do_eject() 1935 { 1936 1937 auxregbisc(AUXIO_FDS, AUXIO_FEJ); 1938 delay(10); 1939 auxregbisc(AUXIO_FEJ, AUXIO_FDS); 1940 } 1941 1942 #ifdef RAMDISK_HOOKS 1943 int fd_read_rd_image __P((size_t *, caddr_t *)); 1944 #endif 1945 1946 /* ARGSUSED */ 1947 void 1948 fd_mountroot_hook(dev) 1949 struct device *dev; 1950 { 1951 int c; 1952 1953 fd_do_eject(); 1954 printf("Insert filesystem floppy and press return."); 1955 for (;;) { 1956 c = cngetc(); 1957 if ((c == '\r') || (c == '\n')) { 1958 printf("\n"); 1959 break; 1960 } 1961 } 1962 #ifdef RAMDISK_HOOKS 1963 { 1964 extern int (*rd_read_image) __P((size_t *, caddr_t *)); 1965 rd_read_image = fd_read_rd_image; 1966 } 1967 #endif 1968 } 1969 1970 #ifdef RAMDISK_HOOKS 1971 1972 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 1973 1974 int 1975 fd_read_rd_image(sizep, addrp) 1976 size_t *sizep; 1977 caddr_t *addrp; 1978 { 1979 struct buf buf, *bp = &buf; 1980 dev_t dev; 1981 off_t offset; 1982 caddr_t addr; 1983 1984 dev = makedev(54,0); /* XXX */ 1985 1986 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 1987 *addrp = addr; 1988 1989 if (fdopen(dev, 0, S_IFCHR, NULL)) 1990 panic("fd: mountroot: fdopen"); 1991 1992 offset = 0; 1993 1994 for (;;) { 1995 bp->b_dev = dev; 1996 bp->b_error = 0; 1997 bp->b_resid = 0; 1998 bp->b_proc = NULL; 1999 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2000 bp->b_blkno = btodb(offset); 2001 bp->b_bcount = DEV_BSIZE; 2002 bp->b_data = addr; 2003 fdstrategy(bp); 2004 while ((bp->b_flags & B_DONE) == 0) { 2005 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2006 } 2007 if (bp->b_error) 2008 panic("fd: mountroot: fdread error %d", bp->b_error); 2009 2010 if (bp->b_resid != 0) 2011 break; 2012 2013 addr += DEV_BSIZE; 2014 offset += DEV_BSIZE; 2015 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2016 break; 2017 } 2018 (void)fdclose(dev, 0, S_IFCHR, NULL); 2019 *sizep = offset; 2020 fd_do_eject(); 2021 return (0); 2022 } 2023 #endif 2024
Indexes created Fri Oct 03 02:09:57 GMT 2025