fd.c revision 1.65
1 /* $NetBSD: fd.c,v 1.65 1999/02/07 09:34:58 jonathan Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 5 * Copyright (c) 1995 Paul Kranenburg. 6 * Copyright (c) 1990 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Don Ahn. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)fd.c 7.4 (Berkeley) 5/25/91 41 */ 42 43 #include "opt_ddb.h" 44 #include "opt_md.h" 45 #include "opt_uvm.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/file.h> 51 #include <sys/ioctl.h> 52 #include <sys/device.h> 53 #include <sys/disklabel.h> 54 #include <sys/dkstat.h> 55 #include <sys/disk.h> 56 #include <sys/fdio.h> 57 #include <sys/buf.h> 58 #include <sys/malloc.h> 59 #include <sys/proc.h> 60 #include <sys/uio.h> 61 #include <sys/stat.h> 62 #include <sys/syslog.h> 63 #include <sys/queue.h> 64 #include <sys/conf.h> 65 66 #include <dev/cons.h> 67 68 #if defined(UVM) 69 #include <vm/vm.h> 70 #include <uvm/uvm_extern.h> 71 #endif 72 73 #include <machine/cpu.h> 74 #include <machine/autoconf.h> 75 #include <machine/conf.h> 76 77 #include <sparc/sparc/auxreg.h> 78 #include <sparc/dev/fdreg.h> 79 #include <sparc/dev/fdvar.h> 80 81 #define FDUNIT(dev) (minor(dev) / 8) 82 #define FDTYPE(dev) (minor(dev) % 8) 83 84 /* XXX misuse a flag to identify format operation */ 85 #define B_FORMAT B_XXX 86 #define b_cylin b_resid 87 88 #define FD_DEBUG 89 #ifdef FD_DEBUG 90 int fdc_debug = 0; 91 #endif 92 93 enum fdc_state { 94 DEVIDLE = 0, 95 MOTORWAIT, 96 DOSEEK, 97 SEEKWAIT, 98 SEEKTIMEDOUT, 99 SEEKCOMPLETE, 100 DOIO, 101 IOCOMPLETE, 102 IOTIMEDOUT, 103 DORESET, 104 RESETCOMPLETE, 105 RESETTIMEDOUT, 106 DORECAL, 107 RECALWAIT, 108 RECALTIMEDOUT, 109 RECALCOMPLETE, 110 }; 111 112 /* software state, per controller */ 113 struct fdc_softc { 114 struct device sc_dev; /* boilerplate */ 115 bus_space_tag_t sc_bustag; 116 caddr_t sc_reg; 117 struct fd_softc *sc_fd[4]; /* pointers to children */ 118 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 119 enum fdc_state sc_state; 120 int sc_flags; 121 #define FDC_82077 0x01 122 #define FDC_NEEDHEADSETTLE 0x02 123 #define FDC_EIS 0x04 124 int sc_errors; /* number of retries so far */ 125 int sc_overruns; /* number of DMA overruns */ 126 int sc_cfg; /* current configuration */ 127 struct fdcio sc_io; 128 #define sc_reg_msr sc_io.fdcio_reg_msr 129 #define sc_reg_fifo sc_io.fdcio_reg_fifo 130 #define sc_reg_dor sc_io.fdcio_reg_dor 131 #define sc_reg_drs sc_io.fdcio_reg_msr 132 #define sc_istate sc_io.fdcio_istate 133 #define sc_data sc_io.fdcio_data 134 #define sc_tc sc_io.fdcio_tc 135 #define sc_nstat sc_io.fdcio_nstat 136 #define sc_status sc_io.fdcio_status 137 #define sc_intrcnt sc_io.fdcio_intrcnt 138 }; 139 140 #ifndef FDC_C_HANDLER 141 extern struct fdcio *fdciop; 142 #endif 143 144 /* controller driver configuration */ 145 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 146 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 147 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 148 void fdcattach_obio __P((struct device *, struct device *, void *)); 149 150 void fdcattach __P((struct fdc_softc *, int, struct bootpath *)); 151 152 struct cfattach fdc_mainbus_ca = { 153 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 154 }; 155 struct cfattach fdc_obio_ca = { 156 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 157 }; 158 159 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 160 161 /* 162 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 163 * we tell them apart. 164 */ 165 struct fd_type { 166 int sectrac; /* sectors per track */ 167 int heads; /* number of heads */ 168 int seccyl; /* sectors per cylinder */ 169 int secsize; /* size code for sectors */ 170 int datalen; /* data len when secsize = 0 */ 171 int steprate; /* step rate and head unload time */ 172 int gap1; /* gap len between sectors */ 173 int gap2; /* formatting gap */ 174 int cylinders; /* total num of cylinders */ 175 int size; /* size of disk in sectors */ 176 int step; /* steps per cylinder */ 177 int rate; /* transfer speed code */ 178 int fillbyte; /* format fill byte */ 179 int interleave; /* interleave factor (formatting) */ 180 char *name; 181 }; 182 183 /* The order of entries in the following table is important -- BEWARE! */ 184 struct fd_type fd_types[] = { 185 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 186 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 187 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 188 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 189 }; 190 191 /* software state, per disk (with up to 4 disks per ctlr) */ 192 struct fd_softc { 193 struct device sc_dv; /* generic device info */ 194 struct disk sc_dk; /* generic disk info */ 195 196 struct fd_type *sc_deftype; /* default type descriptor */ 197 struct fd_type *sc_type; /* current type descriptor */ 198 199 daddr_t sc_blkno; /* starting block number */ 200 int sc_bcount; /* byte count left */ 201 int sc_skip; /* bytes already transferred */ 202 int sc_nblks; /* number of blocks currently tranferring */ 203 int sc_nbytes; /* number of bytes currently tranferring */ 204 205 int sc_drive; /* physical unit number */ 206 int sc_flags; 207 #define FD_OPEN 0x01 /* it's open */ 208 #define FD_MOTOR 0x02 /* motor should be on */ 209 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 210 int sc_cylin; /* where we think the head is */ 211 int sc_opts; /* user-set options */ 212 213 void *sc_sdhook; /* shutdownhook cookie */ 214 215 TAILQ_ENTRY(fd_softc) sc_drivechain; 216 int sc_ops; /* I/O ops since last switch */ 217 struct buf sc_q; /* head of buf chain */ 218 }; 219 220 /* floppy driver configuration */ 221 int fdmatch __P((struct device *, struct cfdata *, void *)); 222 void fdattach __P((struct device *, struct device *, void *)); 223 224 struct cfattach fd_ca = { 225 sizeof(struct fd_softc), fdmatch, fdattach 226 }; 227 228 extern struct cfdriver fd_cd; 229 230 void fdgetdisklabel __P((dev_t)); 231 int fd_get_parms __P((struct fd_softc *)); 232 void fdstrategy __P((struct buf *)); 233 void fdstart __P((struct fd_softc *)); 234 int fdprint __P((void *, const char *)); 235 236 struct dkdriver fddkdriver = { fdstrategy }; 237 238 struct fd_type *fd_nvtotype __P((char *, int, int)); 239 void fd_set_motor __P((struct fdc_softc *fdc)); 240 void fd_motor_off __P((void *arg)); 241 void fd_motor_on __P((void *arg)); 242 int fdcresult __P((struct fdc_softc *fdc)); 243 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 244 void fdcstart __P((struct fdc_softc *fdc)); 245 void fdcstatus __P((struct device *dv, int n, char *s)); 246 void fdc_reset __P((struct fdc_softc *fdc)); 247 void fdctimeout __P((void *arg)); 248 void fdcpseudointr __P((void *arg)); 249 #ifdef FDC_C_HANDLER 250 int fdchwintr __P((void *)); 251 #else 252 void fdchwintr __P((void)); 253 #endif 254 int fdcswintr __P((void *)); 255 int fdcstate __P((struct fdc_softc *)); 256 void fdcretry __P((struct fdc_softc *fdc)); 257 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 258 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 259 void fd_do_eject __P((struct fd_softc *)); 260 void fd_mountroot_hook __P((struct device *)); 261 static void fdconf __P((struct fdc_softc *)); 262 263 #if PIL_FDSOFT == 4 264 #define IE_FDSOFT IE_L4 265 #else 266 #error 4 267 #endif 268 269 #ifdef FDC_C_HANDLER 270 #if defined(SUN4M) 271 #define FD_SET_SWINTR do { \ 272 if (CPU_ISSUN4M) \ 273 raise(0, PIL_FDSOFT); \ 274 else \ 275 ienab_bis(IE_L4); \ 276 } while(0) 277 #else 278 #define AUDIO_SET_SWINTR ienab_bis(IE_FDSOFT) 279 #endif /* defined(SUN4M) */ 280 #endif /* FDC_C_HANDLER */ 281 282 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 283 284 int 285 fdcmatch_mainbus(parent, match, aux) 286 struct device *parent; 287 struct cfdata *match; 288 void *aux; 289 { 290 struct mainbus_attach_args *ma = aux; 291 292 /* 293 * Floppy controller is on mainbus on sun4c. 294 */ 295 if (!CPU_ISSUN4C) 296 return (0); 297 298 /* sun4c PROMs call the controller "fd" */ 299 if (strcmp("fd", ma->ma_name) != 0) 300 return (0); 301 302 return (bus_space_probe(ma->ma_bustag, 303 ma->ma_iospace, 304 ma->ma_paddr, 305 1, /* probe size */ 306 0, /* offset */ 307 0, /* flags */ 308 NULL, NULL)); 309 } 310 311 int 312 fdcmatch_obio(parent, match, aux) 313 struct device *parent; 314 struct cfdata *match; 315 void *aux; 316 { 317 union obio_attach_args *uoba = aux; 318 struct sbus_attach_args *sa; 319 320 /* 321 * Floppy controller is on obio on sun4m. 322 */ 323 if (uoba->uoba_isobio4 != 0) 324 return (0); 325 326 sa = &uoba->uoba_sbus; 327 328 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 329 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 330 return (0); 331 332 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 333 1, /* probe size */ 334 0, /* offset */ 335 0, /* flags */ 336 NULL, NULL)); 337 } 338 339 /* 340 * Arguments passed between fdcattach and fdprobe. 341 */ 342 struct fdc_attach_args { 343 int fa_drive; 344 struct bootpath *fa_bootpath; 345 struct fd_type *fa_deftype; 346 }; 347 348 /* 349 * Print the location of a disk drive (called just before attaching the 350 * the drive). If `fdc' is not NULL, the drive was found but was not 351 * in the system config file; print the drive name as well. 352 * Return QUIET (config_find ignores this if the device was configured) to 353 * avoid printing `fdN not configured' messages. 354 */ 355 int 356 fdprint(aux, fdc) 357 void *aux; 358 const char *fdc; 359 { 360 register struct fdc_attach_args *fa = aux; 361 362 if (!fdc) 363 printf(" drive %d", fa->fa_drive); 364 return (QUIET); 365 } 366 367 static void 368 fdconf(fdc) 369 struct fdc_softc *fdc; 370 { 371 int vroom; 372 373 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 374 return; 375 376 /* 377 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 378 * the PROM thinks is appropriate. 379 */ 380 if ((vroom = fdc->sc_status[7]) == 0) 381 vroom = 0x64; 382 383 /* Configure controller to use FIFO and Implied Seek */ 384 out_fdc(fdc, NE7CMD_CFG); 385 out_fdc(fdc, vroom); 386 out_fdc(fdc, fdc->sc_cfg); 387 out_fdc(fdc, 0); /* PRETRK */ 388 /* No result phase */ 389 } 390 391 /* 392 * Controller and drives are represented by one and the same 393 * Openprom node, so we can as well check for the floppy boots here. 394 */ 395 396 void 397 fdcattach_mainbus(parent, self, aux) 398 struct device *parent, *self; 399 void *aux; 400 { 401 struct fdc_softc *fdc = (void *)self; 402 struct mainbus_attach_args *ma = aux; 403 struct bootpath *bp; 404 405 fdc->sc_bustag = ma->ma_bustag; 406 407 if (ma->ma_promvaddr != 0) 408 fdc->sc_reg = (caddr_t)ma->ma_promvaddr; 409 else { 410 bus_space_handle_t bh; 411 if (bus_space_map2( 412 ma->ma_bustag, 413 ma->ma_iospace, 414 ma->ma_paddr, 415 ma->ma_size, 416 BUS_SPACE_MAP_LINEAR, 417 0, 418 &bh) != 0) { 419 printf("%s: cannot map registers\n", self->dv_xname); 420 return; 421 } 422 fdc->sc_reg = (caddr_t)bh; 423 } 424 425 bp = NULL; 426 if (ma->ma_bp != NULL && strcmp(ma->ma_bp->name, OBP_FDNAME) == 0) { 427 int v0 = ma->ma_bp->val[0]; 428 int v1 = ma->ma_bp->val[1]; 429 /* 430 * We can get the bootpath in several different 431 * formats! The faked v1 bootpath looks like /fd@0,0. 432 * The v2 bootpath is either just /fd0, in which case 433 * `bp->val[0]' will have been set to -1, or /fd@x,y 434 * where <x,y> is the prom address specifier. 435 */ 436 if (((v0 == ma->ma_iospace) && (v1 == (int)ma->ma_paddr)) || 437 ((v0 == -1) && (v1 == 0)) || /* v2: /fd0 */ 438 ((v0 == 0) && (v1 == 0)) /* v1: /fd@0,0 */ ) 439 bp = ma->ma_bp; 440 } 441 442 fdcattach(fdc, ma->ma_pri, bp); 443 } 444 445 void 446 fdcattach_obio(parent, self, aux) 447 struct device *parent, *self; 448 void *aux; 449 { 450 struct fdc_softc *fdc = (void *)self; 451 union obio_attach_args *uoba = aux; 452 struct sbus_attach_args *sa = &uoba->uoba_sbus; 453 struct bootpath *bp; 454 455 fdc->sc_bustag = sa->sa_bustag; 456 457 if (sa->sa_npromvaddrs != 0) 458 fdc->sc_reg = (caddr_t)sa->sa_promvaddrs[0]; 459 else { 460 bus_space_handle_t bh; 461 462 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 463 sa->sa_offset, 464 sa->sa_size, 465 BUS_SPACE_MAP_LINEAR, 466 0, 467 &bh) != 0) { 468 printf("%s: cannot map control registers\n", 469 self->dv_xname); 470 return; 471 } 472 fdc->sc_reg = (caddr_t)bh; 473 } 474 475 bp = NULL; 476 if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, OBP_FDNAME) == 0) { 477 int v0 = sa->sa_bp->val[0]; 478 int v1 = sa->sa_bp->val[1]; 479 /* 480 * floppy controller on obio (such as on the sun4m), 481 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 482 * We use "slot, offset" to determine if this is the 483 * right one. 484 */ 485 if ((v0 != sa->sa_slot) || (v1 != sa->sa_offset)) 486 bp = sa->sa_bp; 487 } 488 489 fdcattach(fdc, sa->sa_pri, bp); 490 } 491 492 void 493 fdcattach(fdc, pri, bp) 494 struct fdc_softc *fdc; 495 int pri; 496 struct bootpath *bp; 497 { 498 struct fdc_attach_args fa; 499 char code; 500 501 fdc->sc_state = DEVIDLE; 502 fdc->sc_istate = ISTATE_IDLE; 503 fdc->sc_flags |= FDC_EIS; 504 TAILQ_INIT(&fdc->sc_drives); 505 506 #ifdef FDC_C_HANDLER 507 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 508 fdchwintr, fdc); 509 #else 510 fdciop = &fdc->sc_io; 511 (void)bus_intr_establish(fdc->sc_bustag, pri, 512 BUS_INTR_ESTABLISH_FASTTRAP, 513 (int (*) __P((void *)))fdchwintr, NULL); 514 #endif 515 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 516 BUS_INTR_ESTABLISH_SOFTINTR, 517 fdcswintr, fdc); 518 519 /* Assume a 82077 */ 520 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 521 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 522 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 523 524 code = '7'; 525 if (*fdc->sc_reg_dor == NE7_RQM) { 526 /* 527 * This hack from Chris Torek: apparently DOR really 528 * addresses MSR/DRS on a 82072. 529 * We used to rely on the VERSION command to tell the 530 * difference (which did not work). 531 */ 532 *fdc->sc_reg_dor = FDC_250KBPS; 533 if (*fdc->sc_reg_dor == NE7_RQM) 534 code = '2'; 535 } 536 if (code == '7') { 537 fdc->sc_flags |= FDC_82077; 538 } else { 539 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 540 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 541 fdc->sc_reg_dor = 0; 542 } 543 544 #ifdef FD_DEBUG 545 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 546 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 547 if (fdc_debug) 548 printf("[version cmd]"); 549 } 550 #endif 551 552 /* 553 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 554 * Note: CFG_EFIFO is active-low, initial threshold value: 8 555 */ 556 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 557 fdconf(fdc); 558 559 if (fdc->sc_flags & FDC_82077) { 560 /* Lock configuration across soft resets. */ 561 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 562 if (fdcresult(fdc) != 1) 563 printf(" CFGLOCK: unexpected response"); 564 } 565 566 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 567 568 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 569 570 fa.fa_bootpath = bp; 571 572 /* physical limit: four drives per controller. */ 573 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 574 fa.fa_deftype = NULL; /* unknown */ 575 fa.fa_deftype = &fd_types[0]; /* XXX */ 576 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 577 } 578 579 bootpath_store(1, NULL); 580 } 581 582 int 583 fdmatch(parent, match, aux) 584 struct device *parent; 585 struct cfdata *match; 586 void *aux; 587 { 588 struct fdc_softc *fdc = (void *)parent; 589 struct fdc_attach_args *fa = aux; 590 int drive = fa->fa_drive; 591 int n, ok; 592 593 if (drive > 0) 594 /* XXX - for now, punt on more than one drive */ 595 return (0); 596 597 if (fdc->sc_flags & FDC_82077) { 598 /* select drive and turn on motor */ 599 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 600 /* wait for motor to spin up */ 601 delay(250000); 602 } else { 603 auxregbisc(AUXIO4C_FDS, 0); 604 } 605 fdc->sc_nstat = 0; 606 out_fdc(fdc, NE7CMD_RECAL); 607 out_fdc(fdc, drive); 608 /* wait for recalibrate */ 609 for (n = 0; n < 10000; n++) { 610 delay(1000); 611 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 612 /* wait a bit longer till device *really* is ready */ 613 delay(100000); 614 if (out_fdc(fdc, NE7CMD_SENSEI)) 615 break; 616 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 617 /* 618 * Got `invalid command'; we interpret it 619 * to mean that the re-calibrate hasn't in 620 * fact finished yet 621 */ 622 continue; 623 break; 624 } 625 } 626 n = fdc->sc_nstat; 627 #ifdef FD_DEBUG 628 if (fdc_debug) { 629 int i; 630 printf("fdprobe: %d stati:", n); 631 for (i = 0; i < n; i++) 632 printf(" 0x%x", fdc->sc_status[i]); 633 printf("\n"); 634 } 635 #endif 636 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 637 638 /* turn off motor */ 639 if (fdc->sc_flags & FDC_82077) { 640 /* deselect drive and turn motor off */ 641 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 642 } else { 643 auxregbisc(0, AUXIO4C_FDS); 644 } 645 646 return (ok); 647 } 648 649 /* 650 * Controller is working, and drive responded. Attach it. 651 */ 652 void 653 fdattach(parent, self, aux) 654 struct device *parent, *self; 655 void *aux; 656 { 657 struct fdc_softc *fdc = (void *)parent; 658 struct fd_softc *fd = (void *)self; 659 struct fdc_attach_args *fa = aux; 660 struct fd_type *type = fa->fa_deftype; 661 int drive = fa->fa_drive; 662 663 /* XXX Allow `flags' to override device type? */ 664 665 if (type) 666 printf(": %s %d cyl, %d head, %d sec\n", type->name, 667 type->cylinders, type->heads, type->sectrac); 668 else 669 printf(": density unknown\n"); 670 671 fd->sc_cylin = -1; 672 fd->sc_drive = drive; 673 fd->sc_deftype = type; 674 fdc->sc_fd[drive] = fd; 675 676 out_fdc(fdc, NE7CMD_SPECIFY); 677 out_fdc(fdc, type->steprate); 678 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 679 680 /* 681 * Initialize and attach the disk structure. 682 */ 683 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 684 fd->sc_dk.dk_driver = &fddkdriver; 685 disk_attach(&fd->sc_dk); 686 687 /* 688 * We're told if we're the boot device in fdcattach(). 689 */ 690 if (fa->fa_bootpath) 691 fa->fa_bootpath->dev = &fd->sc_dv; 692 693 /* 694 * Establish a mountroot_hook anyway in case we booted 695 * with RB_ASKNAME and get selected as the boot device. 696 */ 697 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 698 699 /* Make sure the drive motor gets turned off at shutdown time. */ 700 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 701 702 /* XXX Need to do some more fiddling with sc_dk. */ 703 dk_establish(&fd->sc_dk, &fd->sc_dv); 704 } 705 706 __inline struct fd_type * 707 fd_dev_to_type(fd, dev) 708 struct fd_softc *fd; 709 dev_t dev; 710 { 711 int type = FDTYPE(dev); 712 713 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 714 return (NULL); 715 return (type ? &fd_types[type - 1] : fd->sc_deftype); 716 } 717 718 void 719 fdstrategy(bp) 720 register struct buf *bp; /* IO operation to perform */ 721 { 722 struct fd_softc *fd; 723 int unit = FDUNIT(bp->b_dev); 724 int sz; 725 int s; 726 727 /* Valid unit, controller, and request? */ 728 if (unit >= fd_cd.cd_ndevs || 729 (fd = fd_cd.cd_devs[unit]) == 0 || 730 bp->b_blkno < 0 || 731 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 732 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 733 (bp->b_flags & B_FORMAT) == 0)) { 734 bp->b_error = EINVAL; 735 goto bad; 736 } 737 738 /* If it's a null transfer, return immediately. */ 739 if (bp->b_bcount == 0) 740 goto done; 741 742 sz = howmany(bp->b_bcount, DEV_BSIZE); 743 744 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 745 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 746 - bp->b_blkno; 747 if (sz == 0) { 748 /* If exactly at end of disk, return EOF. */ 749 bp->b_resid = bp->b_bcount; 750 goto done; 751 } 752 if (sz < 0) { 753 /* If past end of disk, return EINVAL. */ 754 bp->b_error = EINVAL; 755 goto bad; 756 } 757 /* Otherwise, truncate request. */ 758 bp->b_bcount = sz << DEV_BSHIFT; 759 } 760 761 bp->b_cylin = (bp->b_blkno * DEV_BSIZE) / 762 (FD_BSIZE(fd) * fd->sc_type->seccyl); 763 764 #ifdef FD_DEBUG 765 if (fdc_debug > 1) 766 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 767 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 768 #endif 769 770 /* Queue transfer on drive, activate drive and controller if idle. */ 771 s = splbio(); 772 disksort(&fd->sc_q, bp); 773 untimeout(fd_motor_off, fd); /* a good idea */ 774 if (!fd->sc_q.b_active) 775 fdstart(fd); 776 #ifdef DIAGNOSTIC 777 else { 778 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 779 if (fdc->sc_state == DEVIDLE) { 780 printf("fdstrategy: controller inactive\n"); 781 fdcstart(fdc); 782 } 783 } 784 #endif 785 splx(s); 786 return; 787 788 bad: 789 bp->b_flags |= B_ERROR; 790 done: 791 /* Toss transfer; we're done early. */ 792 biodone(bp); 793 } 794 795 void 796 fdstart(fd) 797 struct fd_softc *fd; 798 { 799 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 800 int active = fdc->sc_drives.tqh_first != 0; 801 802 /* Link into controller queue. */ 803 fd->sc_q.b_active = 1; 804 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 805 806 /* If controller not already active, start it. */ 807 if (!active) 808 fdcstart(fdc); 809 } 810 811 void 812 fdfinish(fd, bp) 813 struct fd_softc *fd; 814 struct buf *bp; 815 { 816 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 817 818 /* 819 * Move this drive to the end of the queue to give others a `fair' 820 * chance. We only force a switch if N operations are completed while 821 * another drive is waiting to be serviced, since there is a long motor 822 * startup delay whenever we switch. 823 */ 824 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 825 fd->sc_ops = 0; 826 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 827 if (bp->b_actf) { 828 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 829 } else 830 fd->sc_q.b_active = 0; 831 } 832 bp->b_resid = fd->sc_bcount; 833 fd->sc_skip = 0; 834 fd->sc_q.b_actf = bp->b_actf; 835 836 biodone(bp); 837 /* turn off motor 5s from now */ 838 timeout(fd_motor_off, fd, 5 * hz); 839 fdc->sc_state = DEVIDLE; 840 } 841 842 void 843 fdc_reset(fdc) 844 struct fdc_softc *fdc; 845 { 846 if (fdc->sc_flags & FDC_82077) { 847 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 848 } 849 850 *fdc->sc_reg_drs = DRS_RESET; 851 delay(10); 852 *fdc->sc_reg_drs = 0; 853 854 if (fdc->sc_flags & FDC_82077) { 855 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 856 } 857 #ifdef FD_DEBUG 858 if (fdc_debug) 859 printf("fdc reset\n"); 860 #endif 861 } 862 863 void 864 fd_set_motor(fdc) 865 struct fdc_softc *fdc; 866 { 867 struct fd_softc *fd; 868 u_char status; 869 int n; 870 871 if (fdc->sc_flags & FDC_82077) { 872 status = FDO_FRST | FDO_FDMAEN; 873 if ((fd = fdc->sc_drives.tqh_first) != NULL) 874 status |= fd->sc_drive; 875 876 for (n = 0; n < 4; n++) 877 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 878 status |= FDO_MOEN(n); 879 *fdc->sc_reg_dor = status; 880 } else { 881 int on = 0; 882 883 for (n = 0; n < 4; n++) 884 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 885 on = 1; 886 if (on) { 887 auxregbisc(AUXIO4C_FDS, 0); 888 } else { 889 auxregbisc(0, AUXIO4C_FDS); 890 } 891 } 892 } 893 894 void 895 fd_motor_off(arg) 896 void *arg; 897 { 898 struct fd_softc *fd = arg; 899 int s; 900 901 s = splbio(); 902 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 903 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 904 splx(s); 905 } 906 907 void 908 fd_motor_on(arg) 909 void *arg; 910 { 911 struct fd_softc *fd = arg; 912 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 913 int s; 914 915 s = splbio(); 916 fd->sc_flags &= ~FD_MOTOR_WAIT; 917 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 918 (void) fdcstate(fdc); 919 splx(s); 920 } 921 922 int 923 fdcresult(fdc) 924 struct fdc_softc *fdc; 925 { 926 u_char i; 927 int j = 100000, 928 n = 0; 929 930 for (; j; j--) { 931 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 932 if (i == NE7_RQM) 933 return (fdc->sc_nstat = n); 934 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 935 if (n >= sizeof(fdc->sc_status)) { 936 log(LOG_ERR, "fdcresult: overrun\n"); 937 return (-1); 938 } 939 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 940 } else 941 delay(10); 942 } 943 log(LOG_ERR, "fdcresult: timeout\n"); 944 return (fdc->sc_nstat = -1); 945 } 946 947 int 948 out_fdc(fdc, x) 949 struct fdc_softc *fdc; 950 u_char x; 951 { 952 int i = 100000; 953 954 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 955 delay(1); 956 if (i <= 0) 957 return (-1); 958 959 *fdc->sc_reg_fifo = x; 960 return (0); 961 } 962 963 int 964 fdopen(dev, flags, fmt, p) 965 dev_t dev; 966 int flags, fmt; 967 struct proc *p; 968 { 969 int unit, pmask; 970 struct fd_softc *fd; 971 struct fd_type *type; 972 973 unit = FDUNIT(dev); 974 if (unit >= fd_cd.cd_ndevs) 975 return (ENXIO); 976 fd = fd_cd.cd_devs[unit]; 977 if (fd == 0) 978 return (ENXIO); 979 type = fd_dev_to_type(fd, dev); 980 if (type == NULL) 981 return (ENXIO); 982 983 if ((fd->sc_flags & FD_OPEN) != 0 && 984 fd->sc_type != type) 985 return (EBUSY); 986 987 fd->sc_type = type; 988 fd->sc_cylin = -1; 989 fd->sc_flags |= FD_OPEN; 990 991 /* 992 * Only update the disklabel if we're not open anywhere else. 993 */ 994 if (fd->sc_dk.dk_openmask == 0) 995 fdgetdisklabel(dev); 996 997 pmask = (1 << DISKPART(dev)); 998 999 switch (fmt) { 1000 case S_IFCHR: 1001 fd->sc_dk.dk_copenmask |= pmask; 1002 break; 1003 1004 case S_IFBLK: 1005 fd->sc_dk.dk_bopenmask |= pmask; 1006 break; 1007 } 1008 fd->sc_dk.dk_openmask = 1009 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1010 1011 return (0); 1012 } 1013 1014 int 1015 fdclose(dev, flags, fmt, p) 1016 dev_t dev; 1017 int flags, fmt; 1018 struct proc *p; 1019 { 1020 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1021 int pmask = (1 << DISKPART(dev)); 1022 1023 fd->sc_flags &= ~FD_OPEN; 1024 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1025 1026 switch (fmt) { 1027 case S_IFCHR: 1028 fd->sc_dk.dk_copenmask &= ~pmask; 1029 break; 1030 1031 case S_IFBLK: 1032 fd->sc_dk.dk_bopenmask &= ~pmask; 1033 break; 1034 } 1035 fd->sc_dk.dk_openmask = 1036 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1037 1038 return (0); 1039 } 1040 1041 int 1042 fdread(dev, uio, flag) 1043 dev_t dev; 1044 struct uio *uio; 1045 int flag; 1046 { 1047 1048 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1049 } 1050 1051 int 1052 fdwrite(dev, uio, flag) 1053 dev_t dev; 1054 struct uio *uio; 1055 int flag; 1056 { 1057 1058 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1059 } 1060 1061 void 1062 fdcstart(fdc) 1063 struct fdc_softc *fdc; 1064 { 1065 1066 #ifdef DIAGNOSTIC 1067 /* only got here if controller's drive queue was inactive; should 1068 be in idle state */ 1069 if (fdc->sc_state != DEVIDLE) { 1070 printf("fdcstart: not idle\n"); 1071 return; 1072 } 1073 #endif 1074 (void) fdcstate(fdc); 1075 } 1076 1077 void 1078 fdcstatus(dv, n, s) 1079 struct device *dv; 1080 int n; 1081 char *s; 1082 { 1083 struct fdc_softc *fdc = (void *)dv->dv_parent; 1084 char bits[64]; 1085 #if 0 1086 /* 1087 * A 82072 seems to return <invalid command> on 1088 * gratuitous Sense Interrupt commands. 1089 */ 1090 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1091 out_fdc(fdc, NE7CMD_SENSEI); 1092 (void) fdcresult(fdc); 1093 n = 2; 1094 } 1095 #endif 1096 1097 /* Just print last status */ 1098 n = fdc->sc_nstat; 1099 1100 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1101 1102 switch (n) { 1103 case 0: 1104 printf("\n"); 1105 break; 1106 case 2: 1107 printf(" (st0 %s cyl %d)\n", 1108 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1109 bits, sizeof(bits)), fdc->sc_status[1]); 1110 break; 1111 case 7: 1112 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1113 NE7_ST0BITS, bits, sizeof(bits))); 1114 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1115 NE7_ST1BITS, bits, sizeof(bits))); 1116 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1117 NE7_ST2BITS, bits, sizeof(bits))); 1118 printf(" cyl %d head %d sec %d)\n", 1119 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1120 break; 1121 #ifdef DIAGNOSTIC 1122 default: 1123 printf(" fdcstatus: weird size: %d\n", n); 1124 break; 1125 #endif 1126 } 1127 } 1128 1129 void 1130 fdctimeout(arg) 1131 void *arg; 1132 { 1133 struct fdc_softc *fdc = arg; 1134 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1135 int s; 1136 1137 s = splbio(); 1138 fdcstatus(&fd->sc_dv, 0, "timeout"); 1139 1140 if (fd->sc_q.b_actf) 1141 fdc->sc_state++; 1142 else 1143 fdc->sc_state = DEVIDLE; 1144 1145 (void) fdcstate(fdc); 1146 splx(s); 1147 } 1148 1149 void 1150 fdcpseudointr(arg) 1151 void *arg; 1152 { 1153 struct fdc_softc *fdc = arg; 1154 int s; 1155 1156 /* Just ensure it has the right spl. */ 1157 s = splbio(); 1158 (void) fdcstate(fdc); 1159 splx(s); 1160 } 1161 1162 1163 #ifdef FDC_C_HANDLER 1164 /* 1165 * hardware interrupt entry point: must be converted to `fast' 1166 * (in-window) handler. 1167 */ 1168 int 1169 fdchwintr(arg) 1170 void *arg; 1171 { 1172 struct fdc_softc *fdc = arg; 1173 1174 switch (fdc->sc_istate) { 1175 case ISTATE_IDLE: 1176 return (0); 1177 case ISTATE_SENSEI: 1178 out_fdc(fdc, NE7CMD_SENSEI); 1179 fdcresult(fdc); 1180 fdc->sc_istate = ISTATE_IDLE; 1181 FD_SET_SWINTR; 1182 return (1); 1183 case ISTATE_SPURIOUS: 1184 fdcresult(fdc); 1185 fdc->sc_istate = ISTATE_SPURIOUS; 1186 printf("fdc: stray hard interrupt... "); 1187 FD_SET_SWINTR; 1188 return (1); 1189 case ISTATE_DMA: 1190 break; 1191 default: 1192 printf("fdc: goofed ...\n"); 1193 return (1); 1194 } 1195 1196 for (;;) { 1197 register int msr; 1198 1199 msr = *fdc->sc_reg_msr; 1200 1201 if ((msr & NE7_RQM) == 0) 1202 break; 1203 1204 if ((msr & NE7_NDM) == 0) { 1205 fdcresult(fdc); 1206 fdc->sc_istate = ISTATE_IDLE; 1207 ienab_bis(IE_FDSOFT); 1208 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1209 break; 1210 } 1211 1212 if (msr & NE7_DIO) { 1213 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1214 } else { 1215 *fdc->sc_reg_fifo = *fdc->sc_data++; 1216 } 1217 if (--fdc->sc_tc == 0) { 1218 fdc->sc_istate = ISTATE_DONE; 1219 FTC_FLIP; 1220 fdcresult(fdc); 1221 FD_SET_SWINTR; 1222 break; 1223 } 1224 } 1225 return (1); 1226 } 1227 #endif 1228 1229 int 1230 fdcswintr(arg) 1231 void *arg; 1232 { 1233 struct fdc_softc *fdc = arg; 1234 int s; 1235 1236 if (fdc->sc_istate != ISTATE_DONE) 1237 return (0); 1238 1239 fdc->sc_istate = ISTATE_IDLE; 1240 s = splbio(); 1241 fdcstate(fdc); 1242 splx(s); 1243 return (1); 1244 } 1245 1246 int 1247 fdcstate(fdc) 1248 struct fdc_softc *fdc; 1249 { 1250 #define st0 fdc->sc_status[0] 1251 #define st1 fdc->sc_status[1] 1252 #define cyl fdc->sc_status[1] 1253 #define OUT_FDC(fdc, c, s) \ 1254 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1255 1256 struct fd_softc *fd; 1257 struct buf *bp; 1258 int read, head, sec, nblks; 1259 struct fd_type *type; 1260 struct ne7_fd_formb *finfo = NULL; 1261 1262 1263 if (fdc->sc_istate != ISTATE_IDLE) { 1264 /* Trouble... */ 1265 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1266 fdc->sc_state, fdc->sc_istate); 1267 fdc->sc_istate = ISTATE_IDLE; 1268 if (fdc->sc_state == RESETCOMPLETE || 1269 fdc->sc_state == RESETTIMEDOUT) { 1270 panic("fdcintr: spurious interrupt can't be cleared"); 1271 } 1272 goto doreset; 1273 } 1274 1275 loop: 1276 /* Is there a drive for the controller to do a transfer with? */ 1277 fd = fdc->sc_drives.tqh_first; 1278 if (fd == NULL) { 1279 fdc->sc_state = DEVIDLE; 1280 return (0); 1281 } 1282 1283 /* Is there a transfer to this drive? If not, deactivate drive. */ 1284 bp = fd->sc_q.b_actf; 1285 if (bp == NULL) { 1286 fd->sc_ops = 0; 1287 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1288 fd->sc_q.b_active = 0; 1289 goto loop; 1290 } 1291 1292 if (bp->b_flags & B_FORMAT) 1293 finfo = (struct ne7_fd_formb *)bp->b_data; 1294 1295 switch (fdc->sc_state) { 1296 case DEVIDLE: 1297 fdc->sc_errors = 0; 1298 fd->sc_skip = 0; 1299 fd->sc_bcount = bp->b_bcount; 1300 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1301 untimeout(fd_motor_off, fd); 1302 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1303 fdc->sc_state = MOTORWAIT; 1304 return (1); 1305 } 1306 if ((fd->sc_flags & FD_MOTOR) == 0) { 1307 /* Turn on the motor, being careful about pairing. */ 1308 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1309 if (ofd && ofd->sc_flags & FD_MOTOR) { 1310 untimeout(fd_motor_off, ofd); 1311 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1312 } 1313 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1314 fd_set_motor(fdc); 1315 fdc->sc_state = MOTORWAIT; 1316 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1317 /* Allow .25s for motor to stabilize. */ 1318 timeout(fd_motor_on, fd, hz / 4); 1319 } else { 1320 fd->sc_flags &= ~FD_MOTOR_WAIT; 1321 goto loop; 1322 } 1323 return (1); 1324 } 1325 /* Make sure the right drive is selected. */ 1326 fd_set_motor(fdc); 1327 1328 /*FALLTHROUGH*/ 1329 case DOSEEK: 1330 doseek: 1331 if ((fdc->sc_flags & FDC_EIS) && 1332 (bp->b_flags & B_FORMAT) == 0) { 1333 fd->sc_cylin = bp->b_cylin; 1334 /* We use implied seek */ 1335 goto doio; 1336 } 1337 1338 if (fd->sc_cylin == bp->b_cylin) 1339 goto doio; 1340 1341 /* specify command */ 1342 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1343 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1344 /* XXX head load time == 6ms */ 1345 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1346 1347 fdc->sc_istate = ISTATE_SENSEI; 1348 /* seek function */ 1349 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1350 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1351 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1352 1353 fd->sc_cylin = -1; 1354 fdc->sc_state = SEEKWAIT; 1355 fdc->sc_nstat = 0; 1356 1357 fd->sc_dk.dk_seek++; 1358 disk_busy(&fd->sc_dk); 1359 1360 timeout(fdctimeout, fdc, 4 * hz); 1361 return (1); 1362 1363 case DOIO: 1364 doio: 1365 if (finfo != NULL) 1366 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1367 (char *)finfo; 1368 type = fd->sc_type; 1369 sec = fd->sc_blkno % type->seccyl; 1370 nblks = type->seccyl - sec; 1371 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1372 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1373 fd->sc_nblks = nblks; 1374 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1375 head = sec / type->sectrac; 1376 sec -= head * type->sectrac; 1377 #ifdef DIAGNOSTIC 1378 {int block; 1379 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1380 if (block != fd->sc_blkno) { 1381 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1382 #ifdef DDB 1383 Debugger(); 1384 #endif 1385 }} 1386 #endif 1387 read = bp->b_flags & B_READ; 1388 1389 /* Setup for pseudo DMA */ 1390 fdc->sc_data = bp->b_data + fd->sc_skip; 1391 fdc->sc_tc = fd->sc_nbytes; 1392 1393 *fdc->sc_reg_drs = type->rate; 1394 #ifdef FD_DEBUG 1395 if (fdc_debug > 1) 1396 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1397 read ? "read" : "write", fd->sc_drive, 1398 fd->sc_cylin, head, sec, nblks); 1399 #endif 1400 fdc->sc_state = IOCOMPLETE; 1401 fdc->sc_istate = ISTATE_DMA; 1402 fdc->sc_nstat = 0; 1403 if (finfo != NULL) { 1404 /* formatting */ 1405 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1406 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1407 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1408 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1409 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1410 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1411 } else { 1412 if (read) 1413 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1414 else 1415 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1416 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1417 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1418 OUT_FDC(fdc, head, IOTIMEDOUT); 1419 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1420 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1421 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1422 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1423 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1424 } 1425 1426 disk_busy(&fd->sc_dk); 1427 1428 /* allow 2 seconds for operation */ 1429 timeout(fdctimeout, fdc, 2 * hz); 1430 return (1); /* will return later */ 1431 1432 case SEEKWAIT: 1433 untimeout(fdctimeout, fdc); 1434 fdc->sc_state = SEEKCOMPLETE; 1435 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1436 /* allow 1/50 second for heads to settle */ 1437 timeout(fdcpseudointr, fdc, hz / 50); 1438 return (1); /* will return later */ 1439 } 1440 /*FALLTHROUGH*/ 1441 case SEEKCOMPLETE: 1442 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1443 1444 /* Make sure seek really happened. */ 1445 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1446 cyl != bp->b_cylin * fd->sc_type->step) { 1447 #ifdef FD_DEBUG 1448 if (fdc_debug) 1449 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1450 #endif 1451 fdcretry(fdc); 1452 goto loop; 1453 } 1454 fd->sc_cylin = bp->b_cylin; 1455 goto doio; 1456 1457 case IOTIMEDOUT: 1458 FTC_FLIP; 1459 (void)fdcresult(fdc); 1460 /*FALLTHROUGH*/ 1461 case SEEKTIMEDOUT: 1462 case RECALTIMEDOUT: 1463 case RESETTIMEDOUT: 1464 fdcretry(fdc); 1465 goto loop; 1466 1467 case IOCOMPLETE: /* IO DONE, post-analyze */ 1468 untimeout(fdctimeout, fdc); 1469 1470 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1471 1472 if (fdc->sc_nstat != 7 || st1 != 0 || 1473 ((st0 & 0xf8) != 0 && 1474 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1475 #ifdef FD_DEBUG 1476 if (fdc_debug) { 1477 fdcstatus(&fd->sc_dv, 7, 1478 bp->b_flags & B_READ 1479 ? "read failed" : "write failed"); 1480 printf("blkno %d nblks %d nstat %d tc %d\n", 1481 fd->sc_blkno, fd->sc_nblks, 1482 fdc->sc_nstat, fdc->sc_tc); 1483 } 1484 #endif 1485 if (fdc->sc_nstat == 7 && 1486 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1487 1488 /* 1489 * Silently retry overruns if no other 1490 * error bit is set. Adjust threshold. 1491 */ 1492 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1493 if (thr < 15) { 1494 thr++; 1495 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1496 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1497 #ifdef FD_DEBUG 1498 if (fdc_debug) 1499 printf("fdc: %d -> threshold\n", thr); 1500 #endif 1501 fdconf(fdc); 1502 fdc->sc_overruns = 0; 1503 } 1504 if (++fdc->sc_overruns < 3) { 1505 fdc->sc_state = DOIO; 1506 goto loop; 1507 } 1508 } 1509 fdcretry(fdc); 1510 goto loop; 1511 } 1512 if (fdc->sc_errors) { 1513 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1514 fd->sc_skip / FD_BSIZE(fd), 1515 (struct disklabel *)NULL); 1516 printf("\n"); 1517 fdc->sc_errors = 0; 1518 } else { 1519 if (--fdc->sc_overruns < -20) { 1520 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1521 if (thr > 0) { 1522 thr--; 1523 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1524 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1525 #ifdef FD_DEBUG 1526 if (fdc_debug) 1527 printf("fdc: %d -> threshold\n", thr); 1528 #endif 1529 fdconf(fdc); 1530 } 1531 fdc->sc_overruns = 0; 1532 } 1533 } 1534 fd->sc_blkno += fd->sc_nblks; 1535 fd->sc_skip += fd->sc_nbytes; 1536 fd->sc_bcount -= fd->sc_nbytes; 1537 if (finfo == NULL && fd->sc_bcount > 0) { 1538 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1539 goto doseek; 1540 } 1541 fdfinish(fd, bp); 1542 goto loop; 1543 1544 case DORESET: 1545 doreset: 1546 /* try a reset, keep motor on */ 1547 fd_set_motor(fdc); 1548 delay(100); 1549 fdc_reset(fdc); 1550 fdc->sc_nstat = 0; 1551 fdc->sc_istate = ISTATE_SENSEI; 1552 fdc->sc_state = RESETCOMPLETE; 1553 timeout(fdctimeout, fdc, hz / 2); 1554 return (1); /* will return later */ 1555 1556 case RESETCOMPLETE: 1557 untimeout(fdctimeout, fdc); 1558 fdconf(fdc); 1559 1560 /* fall through */ 1561 case DORECAL: 1562 fdc->sc_state = RECALWAIT; 1563 fdc->sc_istate = ISTATE_SENSEI; 1564 fdc->sc_nstat = 0; 1565 /* recalibrate function */ 1566 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1567 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1568 timeout(fdctimeout, fdc, 5 * hz); 1569 return (1); /* will return later */ 1570 1571 case RECALWAIT: 1572 untimeout(fdctimeout, fdc); 1573 fdc->sc_state = RECALCOMPLETE; 1574 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1575 /* allow 1/30 second for heads to settle */ 1576 timeout(fdcpseudointr, fdc, hz / 30); 1577 return (1); /* will return later */ 1578 } 1579 1580 case RECALCOMPLETE: 1581 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1582 #ifdef FD_DEBUG 1583 if (fdc_debug) 1584 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1585 #endif 1586 fdcretry(fdc); 1587 goto loop; 1588 } 1589 fd->sc_cylin = 0; 1590 goto doseek; 1591 1592 case MOTORWAIT: 1593 if (fd->sc_flags & FD_MOTOR_WAIT) 1594 return (1); /* time's not up yet */ 1595 goto doseek; 1596 1597 default: 1598 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1599 return (1); 1600 } 1601 #ifdef DIAGNOSTIC 1602 panic("fdcintr: impossible"); 1603 #endif 1604 #undef st0 1605 #undef st1 1606 #undef cyl 1607 } 1608 1609 void 1610 fdcretry(fdc) 1611 struct fdc_softc *fdc; 1612 { 1613 char bits[64]; 1614 struct fd_softc *fd; 1615 struct buf *bp; 1616 1617 fd = fdc->sc_drives.tqh_first; 1618 bp = fd->sc_q.b_actf; 1619 1620 fdc->sc_overruns = 0; 1621 if (fd->sc_opts & FDOPT_NORETRY) 1622 goto fail; 1623 1624 switch (fdc->sc_errors) { 1625 case 0: 1626 /* try again */ 1627 fdc->sc_state = 1628 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1629 break; 1630 1631 case 1: case 2: case 3: 1632 /* didn't work; try recalibrating */ 1633 fdc->sc_state = DORECAL; 1634 break; 1635 1636 case 4: 1637 /* still no go; reset the bastard */ 1638 fdc->sc_state = DORESET; 1639 break; 1640 1641 default: 1642 fail: 1643 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1644 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1645 fd->sc_skip / FD_BSIZE(fd), 1646 (struct disklabel *)NULL); 1647 1648 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1649 NE7_ST0BITS, bits, sizeof(bits))); 1650 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1651 NE7_ST1BITS, bits, sizeof(bits))); 1652 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1653 NE7_ST2BITS, bits, sizeof(bits))); 1654 printf(" cyl %d head %d sec %d)\n", 1655 fdc->sc_status[3], fdc->sc_status[4], 1656 fdc->sc_status[5]); 1657 } 1658 1659 bp->b_flags |= B_ERROR; 1660 bp->b_error = EIO; 1661 fdfinish(fd, bp); 1662 } 1663 fdc->sc_errors++; 1664 } 1665 1666 int 1667 fdsize(dev) 1668 dev_t dev; 1669 { 1670 1671 /* Swapping to floppies would not make sense. */ 1672 return (-1); 1673 } 1674 1675 int 1676 fddump(dev, blkno, va, size) 1677 dev_t dev; 1678 daddr_t blkno; 1679 caddr_t va; 1680 size_t size; 1681 { 1682 1683 /* Not implemented. */ 1684 return (EINVAL); 1685 } 1686 1687 int 1688 fdioctl(dev, cmd, addr, flag, p) 1689 dev_t dev; 1690 u_long cmd; 1691 caddr_t addr; 1692 int flag; 1693 struct proc *p; 1694 { 1695 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1696 struct fdformat_parms *form_parms; 1697 struct fdformat_cmd *form_cmd; 1698 struct ne7_fd_formb fd_formb; 1699 int il[FD_MAX_NSEC + 1]; 1700 int i, j; 1701 int error; 1702 1703 switch (cmd) { 1704 case DIOCGDINFO: 1705 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1706 return 0; 1707 1708 case DIOCWLABEL: 1709 if ((flag & FWRITE) == 0) 1710 return EBADF; 1711 /* XXX do something */ 1712 return (0); 1713 1714 case DIOCWDINFO: 1715 if ((flag & FWRITE) == 0) 1716 return (EBADF); 1717 1718 error = setdisklabel(fd->sc_dk.dk_label, 1719 (struct disklabel *)addr, 0, 1720 fd->sc_dk.dk_cpulabel); 1721 if (error) 1722 return (error); 1723 1724 error = writedisklabel(dev, fdstrategy, 1725 fd->sc_dk.dk_label, 1726 fd->sc_dk.dk_cpulabel); 1727 return (error); 1728 1729 case DIOCLOCK: 1730 /* 1731 * Nothing to do here, really. 1732 */ 1733 return (0); 1734 1735 case DIOCEJECT: 1736 fd_do_eject(fd); 1737 return (0); 1738 1739 case FDIOCGETFORMAT: 1740 form_parms = (struct fdformat_parms *)addr; 1741 form_parms->fdformat_version = FDFORMAT_VERSION; 1742 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1743 form_parms->ncyl = fd->sc_type->cylinders; 1744 form_parms->nspt = fd->sc_type->sectrac; 1745 form_parms->ntrk = fd->sc_type->heads; 1746 form_parms->stepspercyl = fd->sc_type->step; 1747 form_parms->gaplen = fd->sc_type->gap2; 1748 form_parms->fillbyte = fd->sc_type->fillbyte; 1749 form_parms->interleave = fd->sc_type->interleave; 1750 switch (fd->sc_type->rate) { 1751 case FDC_500KBPS: 1752 form_parms->xfer_rate = 500 * 1024; 1753 break; 1754 case FDC_300KBPS: 1755 form_parms->xfer_rate = 300 * 1024; 1756 break; 1757 case FDC_250KBPS: 1758 form_parms->xfer_rate = 250 * 1024; 1759 break; 1760 default: 1761 return (EINVAL); 1762 } 1763 return (0); 1764 1765 case FDIOCSETFORMAT: 1766 if ((flag & FWRITE) == 0) 1767 return (EBADF); /* must be opened for writing */ 1768 1769 form_parms = (struct fdformat_parms *)addr; 1770 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1771 return (EINVAL);/* wrong version of formatting prog */ 1772 1773 i = form_parms->nbps >> 7; 1774 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1775 i & ~(1 << (ffs(i)-1))) 1776 /* not a power-of-two multiple of 128 */ 1777 return (EINVAL); 1778 1779 switch (form_parms->xfer_rate) { 1780 case 500 * 1024: 1781 fd->sc_type->rate = FDC_500KBPS; 1782 break; 1783 case 300 * 1024: 1784 fd->sc_type->rate = FDC_300KBPS; 1785 break; 1786 case 250 * 1024: 1787 fd->sc_type->rate = FDC_250KBPS; 1788 break; 1789 default: 1790 return (EINVAL); 1791 } 1792 1793 if (form_parms->nspt > FD_MAX_NSEC || 1794 form_parms->fillbyte > 0xff || 1795 form_parms->interleave > 0xff) 1796 return EINVAL; 1797 fd->sc_type->sectrac = form_parms->nspt; 1798 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1799 return EINVAL; 1800 fd->sc_type->heads = form_parms->ntrk; 1801 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1802 fd->sc_type->secsize = ffs(i)-1; 1803 fd->sc_type->gap2 = form_parms->gaplen; 1804 fd->sc_type->cylinders = form_parms->ncyl; 1805 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1806 form_parms->nbps / DEV_BSIZE; 1807 fd->sc_type->step = form_parms->stepspercyl; 1808 fd->sc_type->fillbyte = form_parms->fillbyte; 1809 fd->sc_type->interleave = form_parms->interleave; 1810 return (0); 1811 1812 case FDIOCFORMAT_TRACK: 1813 if((flag & FWRITE) == 0) 1814 /* must be opened for writing */ 1815 return (EBADF); 1816 form_cmd = (struct fdformat_cmd *)addr; 1817 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1818 /* wrong version of formatting prog */ 1819 return (EINVAL); 1820 1821 if (form_cmd->head >= fd->sc_type->heads || 1822 form_cmd->cylinder >= fd->sc_type->cylinders) { 1823 return (EINVAL); 1824 } 1825 1826 fd_formb.head = form_cmd->head; 1827 fd_formb.cyl = form_cmd->cylinder; 1828 fd_formb.transfer_rate = fd->sc_type->rate; 1829 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1830 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1831 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1832 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1833 1834 bzero(il, sizeof il); 1835 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1836 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1837 j++; 1838 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1839 j += fd->sc_type->interleave; 1840 } 1841 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1842 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1843 fd_formb.fd_formb_headno(i) = form_cmd->head; 1844 fd_formb.fd_formb_secno(i) = il[i+1]; 1845 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1846 } 1847 1848 return fdformat(dev, &fd_formb, p); 1849 1850 case FDIOCGETOPTS: /* get drive options */ 1851 *(int *)addr = fd->sc_opts; 1852 return (0); 1853 1854 case FDIOCSETOPTS: /* set drive options */ 1855 fd->sc_opts = *(int *)addr; 1856 return (0); 1857 1858 #ifdef DEBUG 1859 case _IO('f', 100): 1860 { 1861 int i; 1862 struct fdc_softc *fdc = (struct fdc_softc *) 1863 fd->sc_dv.dv_parent; 1864 1865 out_fdc(fdc, NE7CMD_DUMPREG); 1866 fdcresult(fdc); 1867 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1868 for (i = 0; i < fdc->sc_nstat; i++) 1869 printf(" 0x%x", fdc->sc_status[i]); 1870 printf(">\n"); 1871 } 1872 1873 return (0); 1874 case _IOW('f', 101, int): 1875 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1876 ~CFG_THRHLD_MASK; 1877 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1878 (*(int *)addr & CFG_THRHLD_MASK); 1879 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1880 return (0); 1881 case _IO('f', 102): 1882 { 1883 int i; 1884 struct fdc_softc *fdc = (struct fdc_softc *) 1885 fd->sc_dv.dv_parent; 1886 out_fdc(fdc, NE7CMD_SENSEI); 1887 fdcresult(fdc); 1888 printf("sensei(%d regs): <", fdc->sc_nstat); 1889 for (i=0; i< fdc->sc_nstat; i++) 1890 printf(" 0x%x", fdc->sc_status[i]); 1891 } 1892 printf(">\n"); 1893 return (0); 1894 #endif 1895 default: 1896 return (ENOTTY); 1897 } 1898 1899 #ifdef DIAGNOSTIC 1900 panic("fdioctl: impossible"); 1901 #endif 1902 } 1903 1904 int 1905 fdformat(dev, finfo, p) 1906 dev_t dev; 1907 struct ne7_fd_formb *finfo; 1908 struct proc *p; 1909 { 1910 int rv = 0, s; 1911 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1912 struct fd_type *type = fd->sc_type; 1913 struct buf *bp; 1914 1915 /* set up a buffer header for fdstrategy() */ 1916 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1917 if (bp == 0) 1918 return (ENOBUFS); 1919 1920 PHOLD(p); 1921 bzero((void *)bp, sizeof(struct buf)); 1922 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1923 bp->b_proc = p; 1924 bp->b_dev = dev; 1925 1926 /* 1927 * Calculate a fake blkno, so fdstrategy() would initiate a 1928 * seek to the requested cylinder. 1929 */ 1930 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1931 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1932 / DEV_BSIZE; 1933 1934 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1935 bp->b_data = (caddr_t)finfo; 1936 1937 #ifdef FD_DEBUG 1938 if (fdc_debug) 1939 printf("fdformat: blkno 0x%x count %ld\n", 1940 bp->b_blkno, bp->b_bcount); 1941 #endif 1942 1943 /* now do the format */ 1944 fdstrategy(bp); 1945 1946 /* ...and wait for it to complete */ 1947 s = splbio(); 1948 while (!(bp->b_flags & B_DONE)) { 1949 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1950 if (rv == EWOULDBLOCK) 1951 break; 1952 } 1953 splx(s); 1954 1955 if (rv == EWOULDBLOCK) { 1956 /* timed out */ 1957 rv = EIO; 1958 biodone(bp); 1959 } 1960 if (bp->b_flags & B_ERROR) { 1961 rv = bp->b_error; 1962 } 1963 PRELE(p); 1964 free(bp, M_TEMP); 1965 return (rv); 1966 } 1967 1968 void 1969 fdgetdisklabel(dev) 1970 dev_t dev; 1971 { 1972 int unit = FDUNIT(dev), i; 1973 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1974 struct disklabel *lp = fd->sc_dk.dk_label; 1975 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1976 1977 bzero(lp, sizeof(struct disklabel)); 1978 bzero(lp, sizeof(struct cpu_disklabel)); 1979 1980 lp->d_type = DTYPE_FLOPPY; 1981 lp->d_secsize = FD_BSIZE(fd); 1982 lp->d_secpercyl = fd->sc_type->seccyl; 1983 lp->d_nsectors = fd->sc_type->sectrac; 1984 lp->d_ncylinders = fd->sc_type->cylinders; 1985 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1986 lp->d_rpm = 3600; /* XXX like it matters... */ 1987 1988 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1989 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1990 lp->d_interleave = 1; 1991 1992 lp->d_partitions[RAW_PART].p_offset = 0; 1993 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1994 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1995 lp->d_npartitions = RAW_PART + 1; 1996 1997 lp->d_magic = DISKMAGIC; 1998 lp->d_magic2 = DISKMAGIC; 1999 lp->d_checksum = dkcksum(lp); 2000 2001 /* 2002 * Call the generic disklabel extraction routine. If there's 2003 * not a label there, fake it. 2004 */ 2005 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2006 strncpy(lp->d_packname, "default label", 2007 sizeof(lp->d_packname)); 2008 /* 2009 * Reset the partition info; it might have gotten 2010 * trashed in readdisklabel(). 2011 * 2012 * XXX Why do we have to do this? readdisklabel() 2013 * should be safe... 2014 */ 2015 for (i = 0; i < MAXPARTITIONS; ++i) { 2016 lp->d_partitions[i].p_offset = 0; 2017 if (i == RAW_PART) { 2018 lp->d_partitions[i].p_size = 2019 lp->d_secpercyl * lp->d_ncylinders; 2020 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2021 } else { 2022 lp->d_partitions[i].p_size = 0; 2023 lp->d_partitions[i].p_fstype = FS_UNUSED; 2024 } 2025 } 2026 lp->d_npartitions = RAW_PART + 1; 2027 } 2028 } 2029 2030 void 2031 fd_do_eject(fd) 2032 struct fd_softc *fd; 2033 { 2034 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2035 2036 if (CPU_ISSUN4C) { 2037 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2038 delay(10); 2039 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2040 return; 2041 } 2042 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 2043 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2044 *fdc->sc_reg_dor = dor | FDO_EJ; 2045 delay(10); 2046 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 2047 return; 2048 } 2049 } 2050 2051 #ifdef MEMORY_DISK_HOOKS 2052 int fd_read_md_image __P((size_t *, caddr_t *)); 2053 #endif 2054 2055 /* ARGSUSED */ 2056 void 2057 fd_mountroot_hook(dev) 2058 struct device *dev; 2059 { 2060 int c; 2061 2062 fd_do_eject((struct fd_softc *)dev); 2063 printf("Insert filesystem floppy and press return."); 2064 for (;;) { 2065 c = cngetc(); 2066 if ((c == '\r') || (c == '\n')) { 2067 printf("\n"); 2068 break; 2069 } 2070 } 2071 } 2072 2073 #ifdef MEMORY_DISK_HOOKS 2074 2075 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2076 2077 int 2078 fd_read_md_image(sizep, addrp) 2079 size_t *sizep; 2080 caddr_t *addrp; 2081 { 2082 struct buf buf, *bp = &buf; 2083 dev_t dev; 2084 off_t offset; 2085 caddr_t addr; 2086 2087 dev = makedev(54,0); /* XXX */ 2088 2089 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2090 *addrp = addr; 2091 2092 if (fdopen(dev, 0, S_IFCHR, NULL)) 2093 panic("fd: mountroot: fdopen"); 2094 2095 offset = 0; 2096 2097 for (;;) { 2098 bp->b_dev = dev; 2099 bp->b_error = 0; 2100 bp->b_resid = 0; 2101 bp->b_proc = NULL; 2102 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2103 bp->b_blkno = btodb(offset); 2104 bp->b_bcount = DEV_BSIZE; 2105 bp->b_data = addr; 2106 fdstrategy(bp); 2107 while ((bp->b_flags & B_DONE) == 0) { 2108 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2109 } 2110 if (bp->b_error) 2111 panic("fd: mountroot: fdread error %d", bp->b_error); 2112 2113 if (bp->b_resid != 0) 2114 break; 2115 2116 addr += DEV_BSIZE; 2117 offset += DEV_BSIZE; 2118 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2119 break; 2120 } 2121 (void)fdclose(dev, 0, S_IFCHR, NULL); 2122 *sizep = offset; 2123 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2124 return (0); 2125 } 2126 #endif 2127
Indexes created Fri Oct 03 02:09:57 GMT 2025