fd.c revision 1.60
1 /* $NetBSD: fd.c,v 1.60 1998/03/30 14:23:41 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 "opt_uvm.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/file.h> 49 #include <sys/ioctl.h> 50 #include <sys/device.h> 51 #include <sys/disklabel.h> 52 #include <sys/dkstat.h> 53 #include <sys/disk.h> 54 #include <sys/fdio.h> 55 #include <sys/buf.h> 56 #include <sys/malloc.h> 57 #include <sys/proc.h> 58 #include <sys/uio.h> 59 #include <sys/stat.h> 60 #include <sys/syslog.h> 61 #include <sys/queue.h> 62 #include <sys/conf.h> 63 64 #include <dev/cons.h> 65 66 #if defined(UVM) 67 #include <vm/vm.h> 68 #include <uvm/uvm_extern.h> 69 #endif 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, struct bootpath *)); 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 bootpath *fa_bootpath; 343 struct fd_type *fa_deftype; 344 }; 345 346 /* 347 * Print the location of a disk drive (called just before attaching the 348 * the drive). If `fdc' is not NULL, the drive was found but was not 349 * in the system config file; print the drive name as well. 350 * Return QUIET (config_find ignores this if the device was configured) to 351 * avoid printing `fdN not configured' messages. 352 */ 353 int 354 fdprint(aux, fdc) 355 void *aux; 356 const char *fdc; 357 { 358 register struct fdc_attach_args *fa = aux; 359 360 if (!fdc) 361 printf(" drive %d", fa->fa_drive); 362 return (QUIET); 363 } 364 365 static void 366 fdconf(fdc) 367 struct fdc_softc *fdc; 368 { 369 int vroom; 370 371 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 372 return; 373 374 /* 375 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 376 * the PROM thinks is appropriate. 377 */ 378 if ((vroom = fdc->sc_status[7]) == 0) 379 vroom = 0x64; 380 381 /* Configure controller to use FIFO and Implied Seek */ 382 out_fdc(fdc, NE7CMD_CFG); 383 out_fdc(fdc, vroom); 384 out_fdc(fdc, fdc->sc_cfg); 385 out_fdc(fdc, 0); /* PRETRK */ 386 /* No result phase */ 387 } 388 389 /* 390 * Controller and drives are represented by one and the same 391 * Openprom node, so we can as well check for the floppy boots here. 392 */ 393 394 void 395 fdcattach_mainbus(parent, self, aux) 396 struct device *parent, *self; 397 void *aux; 398 { 399 struct fdc_softc *fdc = (void *)self; 400 struct mainbus_attach_args *ma = aux; 401 struct bootpath *bp; 402 403 fdc->sc_bustag = ma->ma_bustag; 404 405 if (ma->ma_promvaddr != 0) 406 fdc->sc_reg = (caddr_t)ma->ma_promvaddr; 407 else { 408 bus_space_handle_t bh; 409 if (bus_space_map2( 410 ma->ma_bustag, 411 ma->ma_iospace, 412 ma->ma_paddr, 413 ma->ma_size, 414 BUS_SPACE_MAP_LINEAR, 415 0, 416 &bh) != 0) { 417 printf("%s: cannot map registers\n", self->dv_xname); 418 return; 419 } 420 fdc->sc_reg = (caddr_t)bh; 421 } 422 423 bp = NULL; 424 if (ma->ma_bp != NULL && strcmp(ma->ma_bp->name, OBP_FDNAME) == 0) { 425 int v0 = ma->ma_bp->val[0]; 426 int v1 = ma->ma_bp->val[1]; 427 /* 428 * We can get the bootpath in several different 429 * formats! The faked v1 bootpath looks like /fd@0,0. 430 * The v2 bootpath is either just /fd0, in which case 431 * `bp->val[0]' will have been set to -1, or /fd@x,y 432 * where <x,y> is the prom address specifier. 433 */ 434 if (((v0 == ma->ma_iospace) && (v1 == (int)ma->ma_paddr)) || 435 ((v0 == -1) && (v1 == 0)) || /* v2: /fd0 */ 436 ((v0 == 0) && (v1 == 0)) /* v1: /fd@0,0 */ ) 437 bp = ma->ma_bp; 438 } 439 440 fdcattach(fdc, ma->ma_pri, bp); 441 } 442 443 void 444 fdcattach_obio(parent, self, aux) 445 struct device *parent, *self; 446 void *aux; 447 { 448 struct fdc_softc *fdc = (void *)self; 449 union obio_attach_args *uoba = aux; 450 struct sbus_attach_args *sa = &uoba->uoba_sbus; 451 struct bootpath *bp; 452 453 fdc->sc_bustag = sa->sa_bustag; 454 455 if (sa->sa_promvaddr != 0) 456 fdc->sc_reg = (caddr_t)sa->sa_promvaddr; 457 else { 458 bus_space_handle_t bh; 459 460 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 461 sa->sa_offset, 462 sa->sa_size, 463 BUS_SPACE_MAP_LINEAR, 464 0, 465 &bh) != 0) { 466 printf("%s: cannot map control registers\n", 467 self->dv_xname); 468 return; 469 } 470 fdc->sc_reg = (caddr_t)bh; 471 } 472 473 bp = NULL; 474 if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, OBP_FDNAME) == 0) { 475 int v0 = sa->sa_bp->val[0]; 476 int v1 = sa->sa_bp->val[1]; 477 /* 478 * floppy controller on obio (such as on the sun4m), 479 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 480 * We use "slot, offset" to determine if this is the 481 * right one. 482 */ 483 if ((v0 != sa->sa_slot) || (v1 != sa->sa_offset)) 484 bp = sa->sa_bp; 485 } 486 487 fdcattach(fdc, sa->sa_pri, bp); 488 } 489 490 void 491 fdcattach(fdc, pri, bp) 492 struct fdc_softc *fdc; 493 int pri; 494 struct bootpath *bp; 495 { 496 struct fdc_attach_args fa; 497 char code; 498 499 fdc->sc_state = DEVIDLE; 500 fdc->sc_istate = ISTATE_IDLE; 501 fdc->sc_flags |= FDC_EIS; 502 TAILQ_INIT(&fdc->sc_drives); 503 504 #ifdef FDC_C_HANDLER 505 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 506 fdchwintr, fdc); 507 #else 508 fdciop = &fdc->sc_io; 509 (void)bus_intr_establish(fdc->sc_bustag, pri, 510 BUS_INTR_ESTABLISH_FASTTRAP, 511 (int (*) __P((void *)))fdchwintr, NULL); 512 #endif 513 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 514 BUS_INTR_ESTABLISH_SOFTINTR, 515 fdcswintr, fdc); 516 517 /* Assume a 82077 */ 518 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 519 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 520 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 521 522 code = '7'; 523 if (*fdc->sc_reg_dor == NE7_RQM) { 524 /* 525 * This hack from Chris Torek: apparently DOR really 526 * addresses MSR/DRS on a 82072. 527 * We used to rely on the VERSION command to tell the 528 * difference (which did not work). 529 */ 530 *fdc->sc_reg_dor = FDC_250KBPS; 531 if (*fdc->sc_reg_dor == NE7_RQM) 532 code = '2'; 533 } 534 if (code == '7') { 535 fdc->sc_flags |= FDC_82077; 536 } else { 537 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 538 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 539 fdc->sc_reg_dor = 0; 540 } 541 542 #ifdef FD_DEBUG 543 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 544 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 545 if (fdc_debug) 546 printf("[version cmd]"); 547 } 548 #endif 549 550 /* 551 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 552 * Note: CFG_EFIFO is active-low, initial threshold value: 8 553 */ 554 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 555 fdconf(fdc); 556 557 if (fdc->sc_flags & FDC_82077) { 558 /* Lock configuration across soft resets. */ 559 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 560 if (fdcresult(fdc) != 1) 561 printf(" CFGLOCK: unexpected response"); 562 } 563 564 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 565 566 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 567 568 fa.fa_bootpath = bp; 569 570 /* physical limit: four drives per controller. */ 571 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 572 fa.fa_deftype = NULL; /* unknown */ 573 fa.fa_deftype = &fd_types[0]; /* XXX */ 574 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 575 } 576 577 bootpath_store(1, NULL); 578 } 579 580 int 581 fdmatch(parent, match, aux) 582 struct device *parent; 583 struct cfdata *match; 584 void *aux; 585 { 586 struct fdc_softc *fdc = (void *)parent; 587 struct fdc_attach_args *fa = aux; 588 int drive = fa->fa_drive; 589 int n, ok; 590 591 if (drive > 0) 592 /* XXX - for now, punt on more than one drive */ 593 return (0); 594 595 if (fdc->sc_flags & FDC_82077) { 596 /* select drive and turn on motor */ 597 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 598 /* wait for motor to spin up */ 599 delay(250000); 600 } else { 601 auxregbisc(AUXIO4C_FDS, 0); 602 } 603 fdc->sc_nstat = 0; 604 out_fdc(fdc, NE7CMD_RECAL); 605 out_fdc(fdc, drive); 606 /* wait for recalibrate */ 607 for (n = 0; n < 10000; n++) { 608 delay(1000); 609 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 610 /* wait a bit longer till device *really* is ready */ 611 delay(100000); 612 if (out_fdc(fdc, NE7CMD_SENSEI)) 613 break; 614 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 615 /* 616 * Got `invalid command'; we interpret it 617 * to mean that the re-calibrate hasn't in 618 * fact finished yet 619 */ 620 continue; 621 break; 622 } 623 } 624 n = fdc->sc_nstat; 625 #ifdef FD_DEBUG 626 if (fdc_debug) { 627 int i; 628 printf("fdprobe: %d stati:", n); 629 for (i = 0; i < n; i++) 630 printf(" 0x%x", fdc->sc_status[i]); 631 printf("\n"); 632 } 633 #endif 634 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 635 636 /* turn off motor */ 637 if (fdc->sc_flags & FDC_82077) { 638 /* deselect drive and turn motor off */ 639 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 640 } else { 641 auxregbisc(0, AUXIO4C_FDS); 642 } 643 644 return (ok); 645 } 646 647 /* 648 * Controller is working, and drive responded. Attach it. 649 */ 650 void 651 fdattach(parent, self, aux) 652 struct device *parent, *self; 653 void *aux; 654 { 655 struct fdc_softc *fdc = (void *)parent; 656 struct fd_softc *fd = (void *)self; 657 struct fdc_attach_args *fa = aux; 658 struct fd_type *type = fa->fa_deftype; 659 int drive = fa->fa_drive; 660 661 /* XXX Allow `flags' to override device type? */ 662 663 if (type) 664 printf(": %s %d cyl, %d head, %d sec\n", type->name, 665 type->cylinders, type->heads, type->sectrac); 666 else 667 printf(": density unknown\n"); 668 669 fd->sc_cylin = -1; 670 fd->sc_drive = drive; 671 fd->sc_deftype = type; 672 fdc->sc_fd[drive] = fd; 673 674 out_fdc(fdc, NE7CMD_SPECIFY); 675 out_fdc(fdc, type->steprate); 676 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 677 678 /* 679 * Initialize and attach the disk structure. 680 */ 681 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 682 fd->sc_dk.dk_driver = &fddkdriver; 683 disk_attach(&fd->sc_dk); 684 685 /* 686 * We're told if we're the boot device in fdcattach(). 687 */ 688 if (fa->fa_bootpath) 689 fa->fa_bootpath->dev = &fd->sc_dv; 690 691 /* 692 * Establish a mountroot_hook anyway in case we booted 693 * with RB_ASKNAME and get selected as the boot device. 694 */ 695 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 696 697 /* Make sure the drive motor gets turned off at shutdown time. */ 698 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 699 700 /* XXX Need to do some more fiddling with sc_dk. */ 701 dk_establish(&fd->sc_dk, &fd->sc_dv); 702 } 703 704 __inline struct fd_type * 705 fd_dev_to_type(fd, dev) 706 struct fd_softc *fd; 707 dev_t dev; 708 { 709 int type = FDTYPE(dev); 710 711 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 712 return (NULL); 713 return (type ? &fd_types[type - 1] : fd->sc_deftype); 714 } 715 716 void 717 fdstrategy(bp) 718 register struct buf *bp; /* IO operation to perform */ 719 { 720 struct fd_softc *fd; 721 int unit = FDUNIT(bp->b_dev); 722 int sz; 723 int s; 724 725 /* Valid unit, controller, and request? */ 726 if (unit >= fd_cd.cd_ndevs || 727 (fd = fd_cd.cd_devs[unit]) == 0 || 728 bp->b_blkno < 0 || 729 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 730 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 731 (bp->b_flags & B_FORMAT) == 0)) { 732 bp->b_error = EINVAL; 733 goto bad; 734 } 735 736 /* If it's a null transfer, return immediately. */ 737 if (bp->b_bcount == 0) 738 goto done; 739 740 sz = howmany(bp->b_bcount, DEV_BSIZE); 741 742 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 743 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 744 - bp->b_blkno; 745 if (sz == 0) { 746 /* If exactly at end of disk, return EOF. */ 747 bp->b_resid = bp->b_bcount; 748 goto done; 749 } 750 if (sz < 0) { 751 /* If past end of disk, return EINVAL. */ 752 bp->b_error = EINVAL; 753 goto bad; 754 } 755 /* Otherwise, truncate request. */ 756 bp->b_bcount = sz << DEV_BSHIFT; 757 } 758 759 bp->b_cylin = (bp->b_blkno * DEV_BSIZE) / 760 (FD_BSIZE(fd) * fd->sc_type->seccyl); 761 762 #ifdef FD_DEBUG 763 if (fdc_debug > 1) 764 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 765 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 766 #endif 767 768 /* Queue transfer on drive, activate drive and controller if idle. */ 769 s = splbio(); 770 disksort(&fd->sc_q, bp); 771 untimeout(fd_motor_off, fd); /* a good idea */ 772 if (!fd->sc_q.b_active) 773 fdstart(fd); 774 #ifdef DIAGNOSTIC 775 else { 776 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 777 if (fdc->sc_state == DEVIDLE) { 778 printf("fdstrategy: controller inactive\n"); 779 fdcstart(fdc); 780 } 781 } 782 #endif 783 splx(s); 784 return; 785 786 bad: 787 bp->b_flags |= B_ERROR; 788 done: 789 /* Toss transfer; we're done early. */ 790 biodone(bp); 791 } 792 793 void 794 fdstart(fd) 795 struct fd_softc *fd; 796 { 797 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 798 int active = fdc->sc_drives.tqh_first != 0; 799 800 /* Link into controller queue. */ 801 fd->sc_q.b_active = 1; 802 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 803 804 /* If controller not already active, start it. */ 805 if (!active) 806 fdcstart(fdc); 807 } 808 809 void 810 fdfinish(fd, bp) 811 struct fd_softc *fd; 812 struct buf *bp; 813 { 814 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 815 816 /* 817 * Move this drive to the end of the queue to give others a `fair' 818 * chance. We only force a switch if N operations are completed while 819 * another drive is waiting to be serviced, since there is a long motor 820 * startup delay whenever we switch. 821 */ 822 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 823 fd->sc_ops = 0; 824 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 825 if (bp->b_actf) { 826 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 827 } else 828 fd->sc_q.b_active = 0; 829 } 830 bp->b_resid = fd->sc_bcount; 831 fd->sc_skip = 0; 832 fd->sc_q.b_actf = bp->b_actf; 833 834 biodone(bp); 835 /* turn off motor 5s from now */ 836 timeout(fd_motor_off, fd, 5 * hz); 837 fdc->sc_state = DEVIDLE; 838 } 839 840 void 841 fdc_reset(fdc) 842 struct fdc_softc *fdc; 843 { 844 if (fdc->sc_flags & FDC_82077) { 845 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 846 } 847 848 *fdc->sc_reg_drs = DRS_RESET; 849 delay(10); 850 *fdc->sc_reg_drs = 0; 851 852 if (fdc->sc_flags & FDC_82077) { 853 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 854 } 855 #ifdef FD_DEBUG 856 if (fdc_debug) 857 printf("fdc reset\n"); 858 #endif 859 } 860 861 void 862 fd_set_motor(fdc) 863 struct fdc_softc *fdc; 864 { 865 struct fd_softc *fd; 866 u_char status; 867 int n; 868 869 if (fdc->sc_flags & FDC_82077) { 870 status = FDO_FRST | FDO_FDMAEN; 871 if ((fd = fdc->sc_drives.tqh_first) != NULL) 872 status |= fd->sc_drive; 873 874 for (n = 0; n < 4; n++) 875 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 876 status |= FDO_MOEN(n); 877 *fdc->sc_reg_dor = status; 878 } else { 879 int on = 0; 880 881 for (n = 0; n < 4; n++) 882 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 883 on = 1; 884 if (on) { 885 auxregbisc(AUXIO4C_FDS, 0); 886 } else { 887 auxregbisc(0, AUXIO4C_FDS); 888 } 889 } 890 } 891 892 void 893 fd_motor_off(arg) 894 void *arg; 895 { 896 struct fd_softc *fd = arg; 897 int s; 898 899 s = splbio(); 900 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 901 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 902 splx(s); 903 } 904 905 void 906 fd_motor_on(arg) 907 void *arg; 908 { 909 struct fd_softc *fd = arg; 910 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 911 int s; 912 913 s = splbio(); 914 fd->sc_flags &= ~FD_MOTOR_WAIT; 915 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 916 (void) fdcstate(fdc); 917 splx(s); 918 } 919 920 int 921 fdcresult(fdc) 922 struct fdc_softc *fdc; 923 { 924 u_char i; 925 int j = 100000, 926 n = 0; 927 928 for (; j; j--) { 929 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 930 if (i == NE7_RQM) 931 return (fdc->sc_nstat = n); 932 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 933 if (n >= sizeof(fdc->sc_status)) { 934 log(LOG_ERR, "fdcresult: overrun\n"); 935 return (-1); 936 } 937 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 938 } else 939 delay(10); 940 } 941 log(LOG_ERR, "fdcresult: timeout\n"); 942 return (fdc->sc_nstat = -1); 943 } 944 945 int 946 out_fdc(fdc, x) 947 struct fdc_softc *fdc; 948 u_char x; 949 { 950 int i = 100000; 951 952 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 953 delay(1); 954 if (i <= 0) 955 return (-1); 956 957 *fdc->sc_reg_fifo = x; 958 return (0); 959 } 960 961 int 962 fdopen(dev, flags, fmt, p) 963 dev_t dev; 964 int flags, fmt; 965 struct proc *p; 966 { 967 int unit, pmask; 968 struct fd_softc *fd; 969 struct fd_type *type; 970 971 unit = FDUNIT(dev); 972 if (unit >= fd_cd.cd_ndevs) 973 return (ENXIO); 974 fd = fd_cd.cd_devs[unit]; 975 if (fd == 0) 976 return (ENXIO); 977 type = fd_dev_to_type(fd, dev); 978 if (type == NULL) 979 return (ENXIO); 980 981 if ((fd->sc_flags & FD_OPEN) != 0 && 982 fd->sc_type != type) 983 return (EBUSY); 984 985 fd->sc_type = type; 986 fd->sc_cylin = -1; 987 fd->sc_flags |= FD_OPEN; 988 989 /* 990 * Only update the disklabel if we're not open anywhere else. 991 */ 992 if (fd->sc_dk.dk_openmask == 0) 993 fdgetdisklabel(dev); 994 995 pmask = (1 << DISKPART(dev)); 996 997 switch (fmt) { 998 case S_IFCHR: 999 fd->sc_dk.dk_copenmask |= pmask; 1000 break; 1001 1002 case S_IFBLK: 1003 fd->sc_dk.dk_bopenmask |= pmask; 1004 break; 1005 } 1006 fd->sc_dk.dk_openmask = 1007 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1008 1009 return (0); 1010 } 1011 1012 int 1013 fdclose(dev, flags, fmt, p) 1014 dev_t dev; 1015 int flags, fmt; 1016 struct proc *p; 1017 { 1018 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1019 int pmask = (1 << DISKPART(dev)); 1020 1021 fd->sc_flags &= ~FD_OPEN; 1022 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1023 1024 switch (fmt) { 1025 case S_IFCHR: 1026 fd->sc_dk.dk_copenmask &= ~pmask; 1027 break; 1028 1029 case S_IFBLK: 1030 fd->sc_dk.dk_bopenmask &= ~pmask; 1031 break; 1032 } 1033 fd->sc_dk.dk_openmask = 1034 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1035 1036 return (0); 1037 } 1038 1039 int 1040 fdread(dev, uio, flag) 1041 dev_t dev; 1042 struct uio *uio; 1043 int flag; 1044 { 1045 1046 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1047 } 1048 1049 int 1050 fdwrite(dev, uio, flag) 1051 dev_t dev; 1052 struct uio *uio; 1053 int flag; 1054 { 1055 1056 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1057 } 1058 1059 void 1060 fdcstart(fdc) 1061 struct fdc_softc *fdc; 1062 { 1063 1064 #ifdef DIAGNOSTIC 1065 /* only got here if controller's drive queue was inactive; should 1066 be in idle state */ 1067 if (fdc->sc_state != DEVIDLE) { 1068 printf("fdcstart: not idle\n"); 1069 return; 1070 } 1071 #endif 1072 (void) fdcstate(fdc); 1073 } 1074 1075 void 1076 fdcstatus(dv, n, s) 1077 struct device *dv; 1078 int n; 1079 char *s; 1080 { 1081 struct fdc_softc *fdc = (void *)dv->dv_parent; 1082 char bits[64]; 1083 #if 0 1084 /* 1085 * A 82072 seems to return <invalid command> on 1086 * gratuitous Sense Interrupt commands. 1087 */ 1088 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1089 out_fdc(fdc, NE7CMD_SENSEI); 1090 (void) fdcresult(fdc); 1091 n = 2; 1092 } 1093 #endif 1094 1095 /* Just print last status */ 1096 n = fdc->sc_nstat; 1097 1098 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1099 1100 switch (n) { 1101 case 0: 1102 printf("\n"); 1103 break; 1104 case 2: 1105 printf(" (st0 %s cyl %d)\n", 1106 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1107 bits, sizeof(bits)), fdc->sc_status[1]); 1108 break; 1109 case 7: 1110 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1111 NE7_ST0BITS, bits, sizeof(bits))); 1112 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1113 NE7_ST1BITS, bits, sizeof(bits))); 1114 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1115 NE7_ST2BITS, bits, sizeof(bits))); 1116 printf(" cyl %d head %d sec %d)\n", 1117 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1118 break; 1119 #ifdef DIAGNOSTIC 1120 default: 1121 printf(" fdcstatus: weird size: %d\n", n); 1122 break; 1123 #endif 1124 } 1125 } 1126 1127 void 1128 fdctimeout(arg) 1129 void *arg; 1130 { 1131 struct fdc_softc *fdc = arg; 1132 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1133 int s; 1134 1135 s = splbio(); 1136 fdcstatus(&fd->sc_dv, 0, "timeout"); 1137 1138 if (fd->sc_q.b_actf) 1139 fdc->sc_state++; 1140 else 1141 fdc->sc_state = DEVIDLE; 1142 1143 (void) fdcstate(fdc); 1144 splx(s); 1145 } 1146 1147 void 1148 fdcpseudointr(arg) 1149 void *arg; 1150 { 1151 struct fdc_softc *fdc = arg; 1152 int s; 1153 1154 /* Just ensure it has the right spl. */ 1155 s = splbio(); 1156 (void) fdcstate(fdc); 1157 splx(s); 1158 } 1159 1160 1161 #ifdef FDC_C_HANDLER 1162 /* 1163 * hardware interrupt entry point: must be converted to `fast' 1164 * (in-window) handler. 1165 */ 1166 int 1167 fdchwintr(arg) 1168 void *arg; 1169 { 1170 struct fdc_softc *fdc = arg; 1171 1172 switch (fdc->sc_istate) { 1173 case ISTATE_IDLE: 1174 return (0); 1175 case ISTATE_SENSEI: 1176 out_fdc(fdc, NE7CMD_SENSEI); 1177 fdcresult(fdc); 1178 fdc->sc_istate = ISTATE_IDLE; 1179 FD_SET_SWINTR; 1180 return (1); 1181 case ISTATE_SPURIOUS: 1182 fdcresult(fdc); 1183 fdc->sc_istate = ISTATE_SPURIOUS; 1184 printf("fdc: stray hard interrupt... "); 1185 FD_SET_SWINTR; 1186 return (1); 1187 case ISTATE_DMA: 1188 break; 1189 default: 1190 printf("fdc: goofed ...\n"); 1191 return (1); 1192 } 1193 1194 for (;;) { 1195 register int msr; 1196 1197 msr = *fdc->sc_reg_msr; 1198 1199 if ((msr & NE7_RQM) == 0) 1200 break; 1201 1202 if ((msr & NE7_NDM) == 0) { 1203 fdcresult(fdc); 1204 fdc->sc_istate = ISTATE_IDLE; 1205 ienab_bis(IE_FDSOFT); 1206 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1207 break; 1208 } 1209 1210 if (msr & NE7_DIO) { 1211 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1212 } else { 1213 *fdc->sc_reg_fifo = *fdc->sc_data++; 1214 } 1215 if (--fdc->sc_tc == 0) { 1216 fdc->sc_istate = ISTATE_DONE; 1217 FTC_FLIP; 1218 fdcresult(fdc); 1219 FD_SET_SWINTR; 1220 break; 1221 } 1222 } 1223 return (1); 1224 } 1225 #endif 1226 1227 int 1228 fdcswintr(arg) 1229 void *arg; 1230 { 1231 struct fdc_softc *fdc = arg; 1232 int s; 1233 1234 if (fdc->sc_istate != ISTATE_DONE) 1235 return (0); 1236 1237 fdc->sc_istate = ISTATE_IDLE; 1238 s = splbio(); 1239 fdcstate(fdc); 1240 splx(s); 1241 return (1); 1242 } 1243 1244 int 1245 fdcstate(fdc) 1246 struct fdc_softc *fdc; 1247 { 1248 #define st0 fdc->sc_status[0] 1249 #define st1 fdc->sc_status[1] 1250 #define cyl fdc->sc_status[1] 1251 #define OUT_FDC(fdc, c, s) \ 1252 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1253 1254 struct fd_softc *fd; 1255 struct buf *bp; 1256 int read, head, sec, nblks; 1257 struct fd_type *type; 1258 struct ne7_fd_formb *finfo = NULL; 1259 1260 1261 if (fdc->sc_istate != ISTATE_IDLE) { 1262 /* Trouble... */ 1263 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1264 fdc->sc_state, fdc->sc_istate); 1265 fdc->sc_istate = ISTATE_IDLE; 1266 if (fdc->sc_state == RESETCOMPLETE || 1267 fdc->sc_state == RESETTIMEDOUT) { 1268 panic("fdcintr: spurious interrupt can't be cleared"); 1269 } 1270 goto doreset; 1271 } 1272 1273 loop: 1274 /* Is there a drive for the controller to do a transfer with? */ 1275 fd = fdc->sc_drives.tqh_first; 1276 if (fd == NULL) { 1277 fdc->sc_state = DEVIDLE; 1278 return (0); 1279 } 1280 1281 /* Is there a transfer to this drive? If not, deactivate drive. */ 1282 bp = fd->sc_q.b_actf; 1283 if (bp == NULL) { 1284 fd->sc_ops = 0; 1285 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1286 fd->sc_q.b_active = 0; 1287 goto loop; 1288 } 1289 1290 if (bp->b_flags & B_FORMAT) 1291 finfo = (struct ne7_fd_formb *)bp->b_data; 1292 1293 switch (fdc->sc_state) { 1294 case DEVIDLE: 1295 fdc->sc_errors = 0; 1296 fd->sc_skip = 0; 1297 fd->sc_bcount = bp->b_bcount; 1298 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1299 untimeout(fd_motor_off, fd); 1300 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1301 fdc->sc_state = MOTORWAIT; 1302 return (1); 1303 } 1304 if ((fd->sc_flags & FD_MOTOR) == 0) { 1305 /* Turn on the motor, being careful about pairing. */ 1306 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1307 if (ofd && ofd->sc_flags & FD_MOTOR) { 1308 untimeout(fd_motor_off, ofd); 1309 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1310 } 1311 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1312 fd_set_motor(fdc); 1313 fdc->sc_state = MOTORWAIT; 1314 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1315 /* Allow .25s for motor to stabilize. */ 1316 timeout(fd_motor_on, fd, hz / 4); 1317 } else { 1318 fd->sc_flags &= ~FD_MOTOR_WAIT; 1319 goto loop; 1320 } 1321 return (1); 1322 } 1323 /* Make sure the right drive is selected. */ 1324 fd_set_motor(fdc); 1325 1326 /*FALLTHROUGH*/ 1327 case DOSEEK: 1328 doseek: 1329 if ((fdc->sc_flags & FDC_EIS) && 1330 (bp->b_flags & B_FORMAT) == 0) { 1331 fd->sc_cylin = bp->b_cylin; 1332 /* We use implied seek */ 1333 goto doio; 1334 } 1335 1336 if (fd->sc_cylin == bp->b_cylin) 1337 goto doio; 1338 1339 /* specify command */ 1340 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1341 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1342 /* XXX head load time == 6ms */ 1343 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1344 1345 fdc->sc_istate = ISTATE_SENSEI; 1346 /* seek function */ 1347 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1348 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1349 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1350 1351 fd->sc_cylin = -1; 1352 fdc->sc_state = SEEKWAIT; 1353 fdc->sc_nstat = 0; 1354 1355 fd->sc_dk.dk_seek++; 1356 disk_busy(&fd->sc_dk); 1357 1358 timeout(fdctimeout, fdc, 4 * hz); 1359 return (1); 1360 1361 case DOIO: 1362 doio: 1363 if (finfo != NULL) 1364 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1365 (char *)finfo; 1366 type = fd->sc_type; 1367 sec = fd->sc_blkno % type->seccyl; 1368 nblks = type->seccyl - sec; 1369 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1370 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1371 fd->sc_nblks = nblks; 1372 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1373 head = sec / type->sectrac; 1374 sec -= head * type->sectrac; 1375 #ifdef DIAGNOSTIC 1376 {int block; 1377 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1378 if (block != fd->sc_blkno) { 1379 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1380 #ifdef DDB 1381 Debugger(); 1382 #endif 1383 }} 1384 #endif 1385 read = bp->b_flags & B_READ; 1386 1387 /* Setup for pseudo DMA */ 1388 fdc->sc_data = bp->b_data + fd->sc_skip; 1389 fdc->sc_tc = fd->sc_nbytes; 1390 1391 *fdc->sc_reg_drs = type->rate; 1392 #ifdef FD_DEBUG 1393 if (fdc_debug > 1) 1394 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1395 read ? "read" : "write", fd->sc_drive, 1396 fd->sc_cylin, head, sec, nblks); 1397 #endif 1398 fdc->sc_state = IOCOMPLETE; 1399 fdc->sc_istate = ISTATE_DMA; 1400 fdc->sc_nstat = 0; 1401 if (finfo != NULL) { 1402 /* formatting */ 1403 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1404 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1405 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1406 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1407 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1408 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1409 } else { 1410 if (read) 1411 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1412 else 1413 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1414 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1415 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1416 OUT_FDC(fdc, head, IOTIMEDOUT); 1417 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1418 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1419 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1420 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1421 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1422 } 1423 1424 disk_busy(&fd->sc_dk); 1425 1426 /* allow 2 seconds for operation */ 1427 timeout(fdctimeout, fdc, 2 * hz); 1428 return (1); /* will return later */ 1429 1430 case SEEKWAIT: 1431 untimeout(fdctimeout, fdc); 1432 fdc->sc_state = SEEKCOMPLETE; 1433 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1434 /* allow 1/50 second for heads to settle */ 1435 timeout(fdcpseudointr, fdc, hz / 50); 1436 return (1); /* will return later */ 1437 } 1438 /*FALLTHROUGH*/ 1439 case SEEKCOMPLETE: 1440 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1441 1442 /* Make sure seek really happened. */ 1443 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1444 cyl != bp->b_cylin * fd->sc_type->step) { 1445 #ifdef FD_DEBUG 1446 if (fdc_debug) 1447 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1448 #endif 1449 fdcretry(fdc); 1450 goto loop; 1451 } 1452 fd->sc_cylin = bp->b_cylin; 1453 goto doio; 1454 1455 case IOTIMEDOUT: 1456 FTC_FLIP; 1457 (void)fdcresult(fdc); 1458 /*FALLTHROUGH*/ 1459 case SEEKTIMEDOUT: 1460 case RECALTIMEDOUT: 1461 case RESETTIMEDOUT: 1462 fdcretry(fdc); 1463 goto loop; 1464 1465 case IOCOMPLETE: /* IO DONE, post-analyze */ 1466 untimeout(fdctimeout, fdc); 1467 1468 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1469 1470 if (fdc->sc_nstat != 7 || st1 != 0 || 1471 ((st0 & 0xf8) != 0 && 1472 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1473 #ifdef FD_DEBUG 1474 if (fdc_debug) { 1475 fdcstatus(&fd->sc_dv, 7, 1476 bp->b_flags & B_READ 1477 ? "read failed" : "write failed"); 1478 printf("blkno %d nblks %d nstat %d tc %d\n", 1479 fd->sc_blkno, fd->sc_nblks, 1480 fdc->sc_nstat, fdc->sc_tc); 1481 } 1482 #endif 1483 if (fdc->sc_nstat == 7 && 1484 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1485 1486 /* 1487 * Silently retry overruns if no other 1488 * error bit is set. Adjust threshold. 1489 */ 1490 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1491 if (thr < 15) { 1492 thr++; 1493 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1494 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1495 #ifdef FD_DEBUG 1496 if (fdc_debug) 1497 printf("fdc: %d -> threshold\n", thr); 1498 #endif 1499 fdconf(fdc); 1500 fdc->sc_overruns = 0; 1501 } 1502 if (++fdc->sc_overruns < 3) { 1503 fdc->sc_state = DOIO; 1504 goto loop; 1505 } 1506 } 1507 fdcretry(fdc); 1508 goto loop; 1509 } 1510 if (fdc->sc_errors) { 1511 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1512 fd->sc_skip / FD_BSIZE(fd), 1513 (struct disklabel *)NULL); 1514 printf("\n"); 1515 fdc->sc_errors = 0; 1516 } else { 1517 if (--fdc->sc_overruns < -20) { 1518 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1519 if (thr > 0) { 1520 thr--; 1521 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1522 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1523 #ifdef FD_DEBUG 1524 if (fdc_debug) 1525 printf("fdc: %d -> threshold\n", thr); 1526 #endif 1527 fdconf(fdc); 1528 } 1529 fdc->sc_overruns = 0; 1530 } 1531 } 1532 fd->sc_blkno += fd->sc_nblks; 1533 fd->sc_skip += fd->sc_nbytes; 1534 fd->sc_bcount -= fd->sc_nbytes; 1535 if (finfo == NULL && fd->sc_bcount > 0) { 1536 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1537 goto doseek; 1538 } 1539 fdfinish(fd, bp); 1540 goto loop; 1541 1542 case DORESET: 1543 doreset: 1544 /* try a reset, keep motor on */ 1545 fd_set_motor(fdc); 1546 delay(100); 1547 fdc_reset(fdc); 1548 fdc->sc_nstat = 0; 1549 fdc->sc_istate = ISTATE_SENSEI; 1550 fdc->sc_state = RESETCOMPLETE; 1551 timeout(fdctimeout, fdc, hz / 2); 1552 return (1); /* will return later */ 1553 1554 case RESETCOMPLETE: 1555 untimeout(fdctimeout, fdc); 1556 fdconf(fdc); 1557 1558 /* fall through */ 1559 case DORECAL: 1560 fdc->sc_state = RECALWAIT; 1561 fdc->sc_istate = ISTATE_SENSEI; 1562 fdc->sc_nstat = 0; 1563 /* recalibrate function */ 1564 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1565 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1566 timeout(fdctimeout, fdc, 5 * hz); 1567 return (1); /* will return later */ 1568 1569 case RECALWAIT: 1570 untimeout(fdctimeout, fdc); 1571 fdc->sc_state = RECALCOMPLETE; 1572 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1573 /* allow 1/30 second for heads to settle */ 1574 timeout(fdcpseudointr, fdc, hz / 30); 1575 return (1); /* will return later */ 1576 } 1577 1578 case RECALCOMPLETE: 1579 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1580 #ifdef FD_DEBUG 1581 if (fdc_debug) 1582 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1583 #endif 1584 fdcretry(fdc); 1585 goto loop; 1586 } 1587 fd->sc_cylin = 0; 1588 goto doseek; 1589 1590 case MOTORWAIT: 1591 if (fd->sc_flags & FD_MOTOR_WAIT) 1592 return (1); /* time's not up yet */ 1593 goto doseek; 1594 1595 default: 1596 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1597 return (1); 1598 } 1599 #ifdef DIAGNOSTIC 1600 panic("fdcintr: impossible"); 1601 #endif 1602 #undef st0 1603 #undef st1 1604 #undef cyl 1605 } 1606 1607 void 1608 fdcretry(fdc) 1609 struct fdc_softc *fdc; 1610 { 1611 char bits[64]; 1612 struct fd_softc *fd; 1613 struct buf *bp; 1614 1615 fd = fdc->sc_drives.tqh_first; 1616 bp = fd->sc_q.b_actf; 1617 1618 fdc->sc_overruns = 0; 1619 if (fd->sc_opts & FDOPT_NORETRY) 1620 goto fail; 1621 1622 switch (fdc->sc_errors) { 1623 case 0: 1624 /* try again */ 1625 fdc->sc_state = 1626 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1627 break; 1628 1629 case 1: case 2: case 3: 1630 /* didn't work; try recalibrating */ 1631 fdc->sc_state = DORECAL; 1632 break; 1633 1634 case 4: 1635 /* still no go; reset the bastard */ 1636 fdc->sc_state = DORESET; 1637 break; 1638 1639 default: 1640 fail: 1641 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1642 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1643 fd->sc_skip / FD_BSIZE(fd), 1644 (struct disklabel *)NULL); 1645 1646 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1647 NE7_ST0BITS, bits, sizeof(bits))); 1648 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1649 NE7_ST1BITS, bits, sizeof(bits))); 1650 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1651 NE7_ST2BITS, bits, sizeof(bits))); 1652 printf(" cyl %d head %d sec %d)\n", 1653 fdc->sc_status[3], fdc->sc_status[4], 1654 fdc->sc_status[5]); 1655 } 1656 1657 bp->b_flags |= B_ERROR; 1658 bp->b_error = EIO; 1659 fdfinish(fd, bp); 1660 } 1661 fdc->sc_errors++; 1662 } 1663 1664 int 1665 fdsize(dev) 1666 dev_t dev; 1667 { 1668 1669 /* Swapping to floppies would not make sense. */ 1670 return (-1); 1671 } 1672 1673 int 1674 fddump(dev, blkno, va, size) 1675 dev_t dev; 1676 daddr_t blkno; 1677 caddr_t va; 1678 size_t size; 1679 { 1680 1681 /* Not implemented. */ 1682 return (EINVAL); 1683 } 1684 1685 int 1686 fdioctl(dev, cmd, addr, flag, p) 1687 dev_t dev; 1688 u_long cmd; 1689 caddr_t addr; 1690 int flag; 1691 struct proc *p; 1692 { 1693 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1694 struct fdformat_parms *form_parms; 1695 struct fdformat_cmd *form_cmd; 1696 struct ne7_fd_formb fd_formb; 1697 int il[FD_MAX_NSEC + 1]; 1698 int i, j; 1699 int error; 1700 1701 switch (cmd) { 1702 case DIOCGDINFO: 1703 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1704 return 0; 1705 1706 case DIOCWLABEL: 1707 if ((flag & FWRITE) == 0) 1708 return EBADF; 1709 /* XXX do something */ 1710 return (0); 1711 1712 case DIOCWDINFO: 1713 if ((flag & FWRITE) == 0) 1714 return (EBADF); 1715 1716 error = setdisklabel(fd->sc_dk.dk_label, 1717 (struct disklabel *)addr, 0, 1718 fd->sc_dk.dk_cpulabel); 1719 if (error) 1720 return (error); 1721 1722 error = writedisklabel(dev, fdstrategy, 1723 fd->sc_dk.dk_label, 1724 fd->sc_dk.dk_cpulabel); 1725 return (error); 1726 1727 case DIOCLOCK: 1728 /* 1729 * Nothing to do here, really. 1730 */ 1731 return (0); 1732 1733 case DIOCEJECT: 1734 fd_do_eject(fd); 1735 return (0); 1736 1737 case FDIOCGETFORMAT: 1738 form_parms = (struct fdformat_parms *)addr; 1739 form_parms->fdformat_version = FDFORMAT_VERSION; 1740 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1741 form_parms->ncyl = fd->sc_type->cylinders; 1742 form_parms->nspt = fd->sc_type->sectrac; 1743 form_parms->ntrk = fd->sc_type->heads; 1744 form_parms->stepspercyl = fd->sc_type->step; 1745 form_parms->gaplen = fd->sc_type->gap2; 1746 form_parms->fillbyte = fd->sc_type->fillbyte; 1747 form_parms->interleave = fd->sc_type->interleave; 1748 switch (fd->sc_type->rate) { 1749 case FDC_500KBPS: 1750 form_parms->xfer_rate = 500 * 1024; 1751 break; 1752 case FDC_300KBPS: 1753 form_parms->xfer_rate = 300 * 1024; 1754 break; 1755 case FDC_250KBPS: 1756 form_parms->xfer_rate = 250 * 1024; 1757 break; 1758 default: 1759 return (EINVAL); 1760 } 1761 return (0); 1762 1763 case FDIOCSETFORMAT: 1764 if ((flag & FWRITE) == 0) 1765 return (EBADF); /* must be opened for writing */ 1766 1767 form_parms = (struct fdformat_parms *)addr; 1768 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1769 return (EINVAL);/* wrong version of formatting prog */ 1770 1771 i = form_parms->nbps >> 7; 1772 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1773 i & ~(1 << (ffs(i)-1))) 1774 /* not a power-of-two multiple of 128 */ 1775 return (EINVAL); 1776 1777 switch (form_parms->xfer_rate) { 1778 case 500 * 1024: 1779 fd->sc_type->rate = FDC_500KBPS; 1780 break; 1781 case 300 * 1024: 1782 fd->sc_type->rate = FDC_300KBPS; 1783 break; 1784 case 250 * 1024: 1785 fd->sc_type->rate = FDC_250KBPS; 1786 break; 1787 default: 1788 return (EINVAL); 1789 } 1790 1791 if (form_parms->nspt > FD_MAX_NSEC || 1792 form_parms->fillbyte > 0xff || 1793 form_parms->interleave > 0xff) 1794 return EINVAL; 1795 fd->sc_type->sectrac = form_parms->nspt; 1796 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1797 return EINVAL; 1798 fd->sc_type->heads = form_parms->ntrk; 1799 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1800 fd->sc_type->secsize = ffs(i)-1; 1801 fd->sc_type->gap2 = form_parms->gaplen; 1802 fd->sc_type->cylinders = form_parms->ncyl; 1803 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1804 form_parms->nbps / DEV_BSIZE; 1805 fd->sc_type->step = form_parms->stepspercyl; 1806 fd->sc_type->fillbyte = form_parms->fillbyte; 1807 fd->sc_type->interleave = form_parms->interleave; 1808 return (0); 1809 1810 case FDIOCFORMAT_TRACK: 1811 if((flag & FWRITE) == 0) 1812 /* must be opened for writing */ 1813 return (EBADF); 1814 form_cmd = (struct fdformat_cmd *)addr; 1815 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1816 /* wrong version of formatting prog */ 1817 return (EINVAL); 1818 1819 if (form_cmd->head >= fd->sc_type->heads || 1820 form_cmd->cylinder >= fd->sc_type->cylinders) { 1821 return (EINVAL); 1822 } 1823 1824 fd_formb.head = form_cmd->head; 1825 fd_formb.cyl = form_cmd->cylinder; 1826 fd_formb.transfer_rate = fd->sc_type->rate; 1827 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1828 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1829 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1830 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1831 1832 bzero(il, sizeof il); 1833 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1834 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1835 j++; 1836 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1837 j += fd->sc_type->interleave; 1838 } 1839 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1840 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1841 fd_formb.fd_formb_headno(i) = form_cmd->head; 1842 fd_formb.fd_formb_secno(i) = il[i+1]; 1843 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1844 } 1845 1846 return fdformat(dev, &fd_formb, p); 1847 1848 case FDIOCGETOPTS: /* get drive options */ 1849 *(int *)addr = fd->sc_opts; 1850 return (0); 1851 1852 case FDIOCSETOPTS: /* set drive options */ 1853 fd->sc_opts = *(int *)addr; 1854 return (0); 1855 1856 #ifdef DEBUG 1857 case _IO('f', 100): 1858 { 1859 int i; 1860 struct fdc_softc *fdc = (struct fdc_softc *) 1861 fd->sc_dv.dv_parent; 1862 1863 out_fdc(fdc, NE7CMD_DUMPREG); 1864 fdcresult(fdc); 1865 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1866 for (i = 0; i < fdc->sc_nstat; i++) 1867 printf(" 0x%x", fdc->sc_status[i]); 1868 printf(">\n"); 1869 } 1870 1871 return (0); 1872 case _IOW('f', 101, int): 1873 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1874 ~CFG_THRHLD_MASK; 1875 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1876 (*(int *)addr & CFG_THRHLD_MASK); 1877 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1878 return (0); 1879 case _IO('f', 102): 1880 { 1881 int i; 1882 struct fdc_softc *fdc = (struct fdc_softc *) 1883 fd->sc_dv.dv_parent; 1884 out_fdc(fdc, NE7CMD_SENSEI); 1885 fdcresult(fdc); 1886 printf("sensei(%d regs): <", fdc->sc_nstat); 1887 for (i=0; i< fdc->sc_nstat; i++) 1888 printf(" 0x%x", fdc->sc_status[i]); 1889 } 1890 printf(">\n"); 1891 return (0); 1892 #endif 1893 default: 1894 return (ENOTTY); 1895 } 1896 1897 #ifdef DIAGNOSTIC 1898 panic("fdioctl: impossible"); 1899 #endif 1900 } 1901 1902 int 1903 fdformat(dev, finfo, p) 1904 dev_t dev; 1905 struct ne7_fd_formb *finfo; 1906 struct proc *p; 1907 { 1908 int rv = 0, s; 1909 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1910 struct fd_type *type = fd->sc_type; 1911 struct buf *bp; 1912 1913 /* set up a buffer header for fdstrategy() */ 1914 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1915 if (bp == 0) 1916 return (ENOBUFS); 1917 1918 PHOLD(p); 1919 bzero((void *)bp, sizeof(struct buf)); 1920 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1921 bp->b_proc = p; 1922 bp->b_dev = dev; 1923 1924 /* 1925 * Calculate a fake blkno, so fdstrategy() would initiate a 1926 * seek to the requested cylinder. 1927 */ 1928 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1929 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1930 / DEV_BSIZE; 1931 1932 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1933 bp->b_data = (caddr_t)finfo; 1934 1935 #ifdef FD_DEBUG 1936 if (fdc_debug) 1937 printf("fdformat: blkno 0x%x count %ld\n", 1938 bp->b_blkno, bp->b_bcount); 1939 #endif 1940 1941 /* now do the format */ 1942 fdstrategy(bp); 1943 1944 /* ...and wait for it to complete */ 1945 s = splbio(); 1946 while (!(bp->b_flags & B_DONE)) { 1947 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1948 if (rv == EWOULDBLOCK) 1949 break; 1950 } 1951 splx(s); 1952 1953 if (rv == EWOULDBLOCK) { 1954 /* timed out */ 1955 rv = EIO; 1956 biodone(bp); 1957 } 1958 if (bp->b_flags & B_ERROR) { 1959 rv = bp->b_error; 1960 } 1961 PRELE(p); 1962 free(bp, M_TEMP); 1963 return (rv); 1964 } 1965 1966 void 1967 fdgetdisklabel(dev) 1968 dev_t dev; 1969 { 1970 int unit = FDUNIT(dev), i; 1971 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1972 struct disklabel *lp = fd->sc_dk.dk_label; 1973 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1974 1975 bzero(lp, sizeof(struct disklabel)); 1976 bzero(lp, sizeof(struct cpu_disklabel)); 1977 1978 lp->d_type = DTYPE_FLOPPY; 1979 lp->d_secsize = FD_BSIZE(fd); 1980 lp->d_secpercyl = fd->sc_type->seccyl; 1981 lp->d_nsectors = fd->sc_type->sectrac; 1982 lp->d_ncylinders = fd->sc_type->cylinders; 1983 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1984 lp->d_rpm = 3600; /* XXX like it matters... */ 1985 1986 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1987 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1988 lp->d_interleave = 1; 1989 1990 lp->d_partitions[RAW_PART].p_offset = 0; 1991 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1992 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1993 lp->d_npartitions = RAW_PART + 1; 1994 1995 lp->d_magic = DISKMAGIC; 1996 lp->d_magic2 = DISKMAGIC; 1997 lp->d_checksum = dkcksum(lp); 1998 1999 /* 2000 * Call the generic disklabel extraction routine. If there's 2001 * not a label there, fake it. 2002 */ 2003 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2004 strncpy(lp->d_packname, "default label", 2005 sizeof(lp->d_packname)); 2006 /* 2007 * Reset the partition info; it might have gotten 2008 * trashed in readdisklabel(). 2009 * 2010 * XXX Why do we have to do this? readdisklabel() 2011 * should be safe... 2012 */ 2013 for (i = 0; i < MAXPARTITIONS; ++i) { 2014 lp->d_partitions[i].p_offset = 0; 2015 if (i == RAW_PART) { 2016 lp->d_partitions[i].p_size = 2017 lp->d_secpercyl * lp->d_ncylinders; 2018 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2019 } else { 2020 lp->d_partitions[i].p_size = 0; 2021 lp->d_partitions[i].p_fstype = FS_UNUSED; 2022 } 2023 } 2024 lp->d_npartitions = RAW_PART + 1; 2025 } 2026 } 2027 2028 void 2029 fd_do_eject(fd) 2030 struct fd_softc *fd; 2031 { 2032 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2033 2034 if (CPU_ISSUN4C) { 2035 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2036 delay(10); 2037 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2038 return; 2039 } 2040 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 2041 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2042 *fdc->sc_reg_dor = dor | FDO_EJ; 2043 delay(10); 2044 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 2045 return; 2046 } 2047 } 2048 2049 #ifdef MEMORY_DISK_HOOKS 2050 int fd_read_md_image __P((size_t *, caddr_t *)); 2051 #endif 2052 2053 /* ARGSUSED */ 2054 void 2055 fd_mountroot_hook(dev) 2056 struct device *dev; 2057 { 2058 int c; 2059 2060 fd_do_eject((struct fd_softc *)dev); 2061 printf("Insert filesystem floppy and press return."); 2062 for (;;) { 2063 c = cngetc(); 2064 if ((c == '\r') || (c == '\n')) { 2065 printf("\n"); 2066 break; 2067 } 2068 } 2069 #ifdef MEMORY_DISK_HOOKS 2070 { 2071 extern int (*md_read_image) __P((size_t *, caddr_t *)); 2072 md_read_image = fd_read_md_image; 2073 } 2074 #endif 2075 } 2076 2077 #ifdef MEMORY_DISK_HOOKS 2078 2079 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2080 2081 int 2082 fd_read_md_image(sizep, addrp) 2083 size_t *sizep; 2084 caddr_t *addrp; 2085 { 2086 struct buf buf, *bp = &buf; 2087 dev_t dev; 2088 off_t offset; 2089 caddr_t addr; 2090 2091 dev = makedev(54,0); /* XXX */ 2092 2093 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2094 *addrp = addr; 2095 2096 if (fdopen(dev, 0, S_IFCHR, NULL)) 2097 panic("fd: mountroot: fdopen"); 2098 2099 offset = 0; 2100 2101 for (;;) { 2102 bp->b_dev = dev; 2103 bp->b_error = 0; 2104 bp->b_resid = 0; 2105 bp->b_proc = NULL; 2106 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2107 bp->b_blkno = btodb(offset); 2108 bp->b_bcount = DEV_BSIZE; 2109 bp->b_data = addr; 2110 fdstrategy(bp); 2111 while ((bp->b_flags & B_DONE) == 0) { 2112 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2113 } 2114 if (bp->b_error) 2115 panic("fd: mountroot: fdread error %d", bp->b_error); 2116 2117 if (bp->b_resid != 0) 2118 break; 2119 2120 addr += DEV_BSIZE; 2121 offset += DEV_BSIZE; 2122 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2123 break; 2124 } 2125 (void)fdclose(dev, 0, S_IFCHR, NULL); 2126 *sizep = offset; 2127 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2128 return (0); 2129 } 2130 #endif 2131
Indexes created Fri Oct 03 02:09:57 GMT 2025