fd.c revision 1.58
1 /* $NetBSD: fd.c,v 1.58 1998/03/21 20:14:13 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 if (ma->ma_promvaddr && 301 probeget(ma->ma_promvaddr, 1) == -1) { 302 return (0); 303 } 304 305 return (1); 306 } 307 308 int 309 fdcmatch_obio(parent, match, aux) 310 struct device *parent; 311 struct cfdata *match; 312 void *aux; 313 { 314 union obio_attach_args *uoba = aux; 315 struct sbus_attach_args *sa; 316 317 /* 318 * Floppy controller is on obio on sun4m. 319 */ 320 if (uoba->uoba_isobio4 != 0) 321 return (0); 322 323 sa = &uoba->uoba_sbus; 324 325 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 326 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 327 return (0); 328 329 if (sa->sa_promvaddr && 330 probeget(sa->sa_promvaddr, 1) == -1) { 331 return (0); 332 } 333 334 return (1); 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 fdc->sc_reg = (caddr_t)ma->ma_promvaddr; 406 407 bp = NULL; 408 if (ma->ma_bp != NULL && strcmp(ma->ma_bp->name, OBP_FDNAME) == 0) { 409 int v0 = ma->ma_bp->val[0]; 410 int v1 = ma->ma_bp->val[1]; 411 /* 412 * We can get the bootpath in several different 413 * formats! The faked v1 bootpath looks like /fd@0,0. 414 * The v2 bootpath is either just /fd0, in which case 415 * `bp->val[0]' will have been set to -1, or /fd@x,y 416 * where <x,y> is the prom address specifier. 417 */ 418 if (((v0 == ma->ma_iospace) && (v1 == (int)ma->ma_paddr)) || 419 ((v0 == -1) && (v1 == 0)) || /* v2: /fd0 */ 420 ((v0 == 0) && (v1 == 0)) /* v1: /fd@0,0 */ ) 421 bp = ma->ma_bp; 422 } 423 424 fdcattach(fdc, ma->ma_pri, bp); 425 } 426 427 void 428 fdcattach_obio(parent, self, aux) 429 struct device *parent, *self; 430 void *aux; 431 { 432 struct fdc_softc *fdc = (void *)self; 433 union obio_attach_args *uoba = aux; 434 struct sbus_attach_args *sa = &uoba->uoba_sbus; 435 struct bootpath *bp; 436 437 fdc->sc_bustag = sa->sa_bustag; 438 439 if (sa->sa_promvaddr != 0) 440 fdc->sc_reg = (caddr_t)sa->sa_promvaddr; 441 else { 442 bus_space_handle_t bh; 443 444 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 445 sa->sa_offset, 446 sa->sa_size, 447 BUS_SPACE_MAP_LINEAR, 448 0, 449 &bh) != 0) { 450 printf("%s: cannot map control registers\n", 451 self->dv_xname); 452 return; 453 } 454 fdc->sc_reg = (caddr_t)bh; 455 } 456 457 bp = NULL; 458 if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, OBP_FDNAME) == 0) { 459 int v0 = sa->sa_bp->val[0]; 460 int v1 = sa->sa_bp->val[1]; 461 /* 462 * floppy controller on obio (such as on the sun4m), 463 * e.g.: `/obio0/SUNW,fdtwo@0,700000'. 464 * We use "slot, offset" to determine if this is the 465 * right one. 466 */ 467 if ((v0 != sa->sa_slot) || (v1 != sa->sa_offset)) 468 bp = sa->sa_bp; 469 } 470 471 fdcattach(fdc, sa->sa_pri, bp); 472 } 473 474 void 475 fdcattach(fdc, pri, bp) 476 struct fdc_softc *fdc; 477 int pri; 478 struct bootpath *bp; 479 { 480 struct fdc_attach_args fa; 481 char code; 482 483 fdc->sc_state = DEVIDLE; 484 fdc->sc_istate = ISTATE_IDLE; 485 fdc->sc_flags |= FDC_EIS; 486 TAILQ_INIT(&fdc->sc_drives); 487 488 #ifdef FDC_C_HANDLER 489 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 490 fdchwintr, fdc); 491 #else 492 fdciop = &fdc->sc_io; 493 (void)bus_intr_establish(fdc->sc_bustag, pri, 494 BUS_INTR_ESTABLISH_FASTTRAP, 495 (int (*) __P((void *)))fdchwintr, NULL); 496 #endif 497 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 498 BUS_INTR_ESTABLISH_SOFTINTR, 499 fdcswintr, fdc); 500 501 /* Assume a 82077 */ 502 fdc->sc_reg_msr = &((struct fdreg_77 *)fdc->sc_reg)->fd_msr; 503 fdc->sc_reg_fifo = &((struct fdreg_77 *)fdc->sc_reg)->fd_fifo; 504 fdc->sc_reg_dor = &((struct fdreg_77 *)fdc->sc_reg)->fd_dor; 505 506 code = '7'; 507 if (*fdc->sc_reg_dor == NE7_RQM) { 508 /* 509 * This hack from Chris Torek: apparently DOR really 510 * addresses MSR/DRS on a 82072. 511 * We used to rely on the VERSION command to tell the 512 * difference (which did not work). 513 */ 514 *fdc->sc_reg_dor = FDC_250KBPS; 515 if (*fdc->sc_reg_dor == NE7_RQM) 516 code = '2'; 517 } 518 if (code == '7') { 519 fdc->sc_flags |= FDC_82077; 520 } else { 521 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 522 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 523 fdc->sc_reg_dor = 0; 524 } 525 526 #ifdef FD_DEBUG 527 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 528 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 529 if (fdc_debug) 530 printf("[version cmd]"); 531 } 532 #endif 533 534 /* 535 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 536 * Note: CFG_EFIFO is active-low, initial threshold value: 8 537 */ 538 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 539 fdconf(fdc); 540 541 if (fdc->sc_flags & FDC_82077) { 542 /* Lock configuration across soft resets. */ 543 out_fdc(fdc, NE7CMD_LOCK | CFG_LOCK); 544 if (fdcresult(fdc) != 1) 545 printf(" CFGLOCK: unexpected response"); 546 } 547 548 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 549 550 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 551 552 fa.fa_bootpath = bp; 553 554 /* physical limit: four drives per controller. */ 555 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 556 fa.fa_deftype = NULL; /* unknown */ 557 fa.fa_deftype = &fd_types[0]; /* XXX */ 558 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 559 } 560 561 bootpath_store(1, NULL); 562 } 563 564 int 565 fdmatch(parent, match, aux) 566 struct device *parent; 567 struct cfdata *match; 568 void *aux; 569 { 570 struct fdc_softc *fdc = (void *)parent; 571 struct fdc_attach_args *fa = aux; 572 int drive = fa->fa_drive; 573 int n, ok; 574 575 if (drive > 0) 576 /* XXX - for now, punt on more than one drive */ 577 return (0); 578 579 if (fdc->sc_flags & FDC_82077) { 580 /* select drive and turn on motor */ 581 *fdc->sc_reg_dor = drive | FDO_FRST | FDO_MOEN(drive); 582 /* wait for motor to spin up */ 583 delay(250000); 584 } else { 585 auxregbisc(AUXIO4C_FDS, 0); 586 } 587 fdc->sc_nstat = 0; 588 out_fdc(fdc, NE7CMD_RECAL); 589 out_fdc(fdc, drive); 590 /* wait for recalibrate */ 591 for (n = 0; n < 10000; n++) { 592 delay(1000); 593 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 594 /* wait a bit longer till device *really* is ready */ 595 delay(100000); 596 if (out_fdc(fdc, NE7CMD_SENSEI)) 597 break; 598 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 599 /* 600 * Got `invalid command'; we interpret it 601 * to mean that the re-calibrate hasn't in 602 * fact finished yet 603 */ 604 continue; 605 break; 606 } 607 } 608 n = fdc->sc_nstat; 609 #ifdef FD_DEBUG 610 if (fdc_debug) { 611 int i; 612 printf("fdprobe: %d stati:", n); 613 for (i = 0; i < n; i++) 614 printf(" 0x%x", fdc->sc_status[i]); 615 printf("\n"); 616 } 617 #endif 618 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 619 620 /* turn off motor */ 621 if (fdc->sc_flags & FDC_82077) { 622 /* deselect drive and turn motor off */ 623 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 624 } else { 625 auxregbisc(0, AUXIO4C_FDS); 626 } 627 628 return (ok); 629 } 630 631 /* 632 * Controller is working, and drive responded. Attach it. 633 */ 634 void 635 fdattach(parent, self, aux) 636 struct device *parent, *self; 637 void *aux; 638 { 639 struct fdc_softc *fdc = (void *)parent; 640 struct fd_softc *fd = (void *)self; 641 struct fdc_attach_args *fa = aux; 642 struct fd_type *type = fa->fa_deftype; 643 int drive = fa->fa_drive; 644 645 /* XXX Allow `flags' to override device type? */ 646 647 if (type) 648 printf(": %s %d cyl, %d head, %d sec\n", type->name, 649 type->cylinders, type->heads, type->sectrac); 650 else 651 printf(": density unknown\n"); 652 653 fd->sc_cylin = -1; 654 fd->sc_drive = drive; 655 fd->sc_deftype = type; 656 fdc->sc_fd[drive] = fd; 657 658 out_fdc(fdc, NE7CMD_SPECIFY); 659 out_fdc(fdc, type->steprate); 660 out_fdc(fdc, 6 | NE7_SPECIFY_NODMA); 661 662 /* 663 * Initialize and attach the disk structure. 664 */ 665 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 666 fd->sc_dk.dk_driver = &fddkdriver; 667 disk_attach(&fd->sc_dk); 668 669 /* 670 * We're told if we're the boot device in fdcattach(). 671 */ 672 if (fa->fa_bootpath) 673 fa->fa_bootpath->dev = &fd->sc_dv; 674 675 /* 676 * Establish a mountroot_hook anyway in case we booted 677 * with RB_ASKNAME and get selected as the boot device. 678 */ 679 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 680 681 /* Make sure the drive motor gets turned off at shutdown time. */ 682 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 683 684 /* XXX Need to do some more fiddling with sc_dk. */ 685 dk_establish(&fd->sc_dk, &fd->sc_dv); 686 } 687 688 __inline struct fd_type * 689 fd_dev_to_type(fd, dev) 690 struct fd_softc *fd; 691 dev_t dev; 692 { 693 int type = FDTYPE(dev); 694 695 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 696 return (NULL); 697 return (type ? &fd_types[type - 1] : fd->sc_deftype); 698 } 699 700 void 701 fdstrategy(bp) 702 register struct buf *bp; /* IO operation to perform */ 703 { 704 struct fd_softc *fd; 705 int unit = FDUNIT(bp->b_dev); 706 int sz; 707 int s; 708 709 /* Valid unit, controller, and request? */ 710 if (unit >= fd_cd.cd_ndevs || 711 (fd = fd_cd.cd_devs[unit]) == 0 || 712 bp->b_blkno < 0 || 713 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 714 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 715 (bp->b_flags & B_FORMAT) == 0)) { 716 bp->b_error = EINVAL; 717 goto bad; 718 } 719 720 /* If it's a null transfer, return immediately. */ 721 if (bp->b_bcount == 0) 722 goto done; 723 724 sz = howmany(bp->b_bcount, DEV_BSIZE); 725 726 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 727 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 728 - bp->b_blkno; 729 if (sz == 0) { 730 /* If exactly at end of disk, return EOF. */ 731 bp->b_resid = bp->b_bcount; 732 goto done; 733 } 734 if (sz < 0) { 735 /* If past end of disk, return EINVAL. */ 736 bp->b_error = EINVAL; 737 goto bad; 738 } 739 /* Otherwise, truncate request. */ 740 bp->b_bcount = sz << DEV_BSHIFT; 741 } 742 743 bp->b_cylin = (bp->b_blkno * DEV_BSIZE) / 744 (FD_BSIZE(fd) * fd->sc_type->seccyl); 745 746 #ifdef FD_DEBUG 747 if (fdc_debug > 1) 748 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 749 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 750 #endif 751 752 /* Queue transfer on drive, activate drive and controller if idle. */ 753 s = splbio(); 754 disksort(&fd->sc_q, bp); 755 untimeout(fd_motor_off, fd); /* a good idea */ 756 if (!fd->sc_q.b_active) 757 fdstart(fd); 758 #ifdef DIAGNOSTIC 759 else { 760 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 761 if (fdc->sc_state == DEVIDLE) { 762 printf("fdstrategy: controller inactive\n"); 763 fdcstart(fdc); 764 } 765 } 766 #endif 767 splx(s); 768 return; 769 770 bad: 771 bp->b_flags |= B_ERROR; 772 done: 773 /* Toss transfer; we're done early. */ 774 biodone(bp); 775 } 776 777 void 778 fdstart(fd) 779 struct fd_softc *fd; 780 { 781 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 782 int active = fdc->sc_drives.tqh_first != 0; 783 784 /* Link into controller queue. */ 785 fd->sc_q.b_active = 1; 786 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 787 788 /* If controller not already active, start it. */ 789 if (!active) 790 fdcstart(fdc); 791 } 792 793 void 794 fdfinish(fd, bp) 795 struct fd_softc *fd; 796 struct buf *bp; 797 { 798 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 799 800 /* 801 * Move this drive to the end of the queue to give others a `fair' 802 * chance. We only force a switch if N operations are completed while 803 * another drive is waiting to be serviced, since there is a long motor 804 * startup delay whenever we switch. 805 */ 806 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 807 fd->sc_ops = 0; 808 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 809 if (bp->b_actf) { 810 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 811 } else 812 fd->sc_q.b_active = 0; 813 } 814 bp->b_resid = fd->sc_bcount; 815 fd->sc_skip = 0; 816 fd->sc_q.b_actf = bp->b_actf; 817 818 biodone(bp); 819 /* turn off motor 5s from now */ 820 timeout(fd_motor_off, fd, 5 * hz); 821 fdc->sc_state = DEVIDLE; 822 } 823 824 void 825 fdc_reset(fdc) 826 struct fdc_softc *fdc; 827 { 828 if (fdc->sc_flags & FDC_82077) { 829 *fdc->sc_reg_dor = FDO_FDMAEN | FDO_MOEN(0); 830 } 831 832 *fdc->sc_reg_drs = DRS_RESET; 833 delay(10); 834 *fdc->sc_reg_drs = 0; 835 836 if (fdc->sc_flags & FDC_82077) { 837 *fdc->sc_reg_dor = FDO_FRST | FDO_FDMAEN | FDO_DS; 838 } 839 #ifdef FD_DEBUG 840 if (fdc_debug) 841 printf("fdc reset\n"); 842 #endif 843 } 844 845 void 846 fd_set_motor(fdc) 847 struct fdc_softc *fdc; 848 { 849 struct fd_softc *fd; 850 u_char status; 851 int n; 852 853 if (fdc->sc_flags & FDC_82077) { 854 status = FDO_FRST | FDO_FDMAEN; 855 if ((fd = fdc->sc_drives.tqh_first) != NULL) 856 status |= fd->sc_drive; 857 858 for (n = 0; n < 4; n++) 859 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 860 status |= FDO_MOEN(n); 861 *fdc->sc_reg_dor = status; 862 } else { 863 int on = 0; 864 865 for (n = 0; n < 4; n++) 866 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 867 on = 1; 868 if (on) { 869 auxregbisc(AUXIO4C_FDS, 0); 870 } else { 871 auxregbisc(0, AUXIO4C_FDS); 872 } 873 } 874 } 875 876 void 877 fd_motor_off(arg) 878 void *arg; 879 { 880 struct fd_softc *fd = arg; 881 int s; 882 883 s = splbio(); 884 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 885 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 886 splx(s); 887 } 888 889 void 890 fd_motor_on(arg) 891 void *arg; 892 { 893 struct fd_softc *fd = arg; 894 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 895 int s; 896 897 s = splbio(); 898 fd->sc_flags &= ~FD_MOTOR_WAIT; 899 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 900 (void) fdcstate(fdc); 901 splx(s); 902 } 903 904 int 905 fdcresult(fdc) 906 struct fdc_softc *fdc; 907 { 908 u_char i; 909 int j = 100000, 910 n = 0; 911 912 for (; j; j--) { 913 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 914 if (i == NE7_RQM) 915 return (fdc->sc_nstat = n); 916 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 917 if (n >= sizeof(fdc->sc_status)) { 918 log(LOG_ERR, "fdcresult: overrun\n"); 919 return (-1); 920 } 921 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 922 } else 923 delay(10); 924 } 925 log(LOG_ERR, "fdcresult: timeout\n"); 926 return (fdc->sc_nstat = -1); 927 } 928 929 int 930 out_fdc(fdc, x) 931 struct fdc_softc *fdc; 932 u_char x; 933 { 934 int i = 100000; 935 936 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 937 delay(1); 938 if (i <= 0) 939 return (-1); 940 941 *fdc->sc_reg_fifo = x; 942 return (0); 943 } 944 945 int 946 fdopen(dev, flags, fmt, p) 947 dev_t dev; 948 int flags, fmt; 949 struct proc *p; 950 { 951 int unit, pmask; 952 struct fd_softc *fd; 953 struct fd_type *type; 954 955 unit = FDUNIT(dev); 956 if (unit >= fd_cd.cd_ndevs) 957 return (ENXIO); 958 fd = fd_cd.cd_devs[unit]; 959 if (fd == 0) 960 return (ENXIO); 961 type = fd_dev_to_type(fd, dev); 962 if (type == NULL) 963 return (ENXIO); 964 965 if ((fd->sc_flags & FD_OPEN) != 0 && 966 fd->sc_type != type) 967 return (EBUSY); 968 969 fd->sc_type = type; 970 fd->sc_cylin = -1; 971 fd->sc_flags |= FD_OPEN; 972 973 /* 974 * Only update the disklabel if we're not open anywhere else. 975 */ 976 if (fd->sc_dk.dk_openmask == 0) 977 fdgetdisklabel(dev); 978 979 pmask = (1 << DISKPART(dev)); 980 981 switch (fmt) { 982 case S_IFCHR: 983 fd->sc_dk.dk_copenmask |= pmask; 984 break; 985 986 case S_IFBLK: 987 fd->sc_dk.dk_bopenmask |= pmask; 988 break; 989 } 990 fd->sc_dk.dk_openmask = 991 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 992 993 return (0); 994 } 995 996 int 997 fdclose(dev, flags, fmt, p) 998 dev_t dev; 999 int flags, fmt; 1000 struct proc *p; 1001 { 1002 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1003 int pmask = (1 << DISKPART(dev)); 1004 1005 fd->sc_flags &= ~FD_OPEN; 1006 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1007 1008 switch (fmt) { 1009 case S_IFCHR: 1010 fd->sc_dk.dk_copenmask &= ~pmask; 1011 break; 1012 1013 case S_IFBLK: 1014 fd->sc_dk.dk_bopenmask &= ~pmask; 1015 break; 1016 } 1017 fd->sc_dk.dk_openmask = 1018 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1019 1020 return (0); 1021 } 1022 1023 int 1024 fdread(dev, uio, flag) 1025 dev_t dev; 1026 struct uio *uio; 1027 int flag; 1028 { 1029 1030 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1031 } 1032 1033 int 1034 fdwrite(dev, uio, flag) 1035 dev_t dev; 1036 struct uio *uio; 1037 int flag; 1038 { 1039 1040 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1041 } 1042 1043 void 1044 fdcstart(fdc) 1045 struct fdc_softc *fdc; 1046 { 1047 1048 #ifdef DIAGNOSTIC 1049 /* only got here if controller's drive queue was inactive; should 1050 be in idle state */ 1051 if (fdc->sc_state != DEVIDLE) { 1052 printf("fdcstart: not idle\n"); 1053 return; 1054 } 1055 #endif 1056 (void) fdcstate(fdc); 1057 } 1058 1059 void 1060 fdcstatus(dv, n, s) 1061 struct device *dv; 1062 int n; 1063 char *s; 1064 { 1065 struct fdc_softc *fdc = (void *)dv->dv_parent; 1066 char bits[64]; 1067 #if 0 1068 /* 1069 * A 82072 seems to return <invalid command> on 1070 * gratuitous Sense Interrupt commands. 1071 */ 1072 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1073 out_fdc(fdc, NE7CMD_SENSEI); 1074 (void) fdcresult(fdc); 1075 n = 2; 1076 } 1077 #endif 1078 1079 /* Just print last status */ 1080 n = fdc->sc_nstat; 1081 1082 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 1083 1084 switch (n) { 1085 case 0: 1086 printf("\n"); 1087 break; 1088 case 2: 1089 printf(" (st0 %s cyl %d)\n", 1090 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1091 bits, sizeof(bits)), fdc->sc_status[1]); 1092 break; 1093 case 7: 1094 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1095 NE7_ST0BITS, bits, sizeof(bits))); 1096 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1097 NE7_ST1BITS, bits, sizeof(bits))); 1098 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1099 NE7_ST2BITS, bits, sizeof(bits))); 1100 printf(" cyl %d head %d sec %d)\n", 1101 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1102 break; 1103 #ifdef DIAGNOSTIC 1104 default: 1105 printf(" fdcstatus: weird size: %d\n", n); 1106 break; 1107 #endif 1108 } 1109 } 1110 1111 void 1112 fdctimeout(arg) 1113 void *arg; 1114 { 1115 struct fdc_softc *fdc = arg; 1116 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1117 int s; 1118 1119 s = splbio(); 1120 fdcstatus(&fd->sc_dv, 0, "timeout"); 1121 1122 if (fd->sc_q.b_actf) 1123 fdc->sc_state++; 1124 else 1125 fdc->sc_state = DEVIDLE; 1126 1127 (void) fdcstate(fdc); 1128 splx(s); 1129 } 1130 1131 void 1132 fdcpseudointr(arg) 1133 void *arg; 1134 { 1135 struct fdc_softc *fdc = arg; 1136 int s; 1137 1138 /* Just ensure it has the right spl. */ 1139 s = splbio(); 1140 (void) fdcstate(fdc); 1141 splx(s); 1142 } 1143 1144 1145 #ifdef FDC_C_HANDLER 1146 /* 1147 * hardware interrupt entry point: must be converted to `fast' 1148 * (in-window) handler. 1149 */ 1150 int 1151 fdchwintr(arg) 1152 void *arg; 1153 { 1154 struct fdc_softc *fdc = arg; 1155 1156 switch (fdc->sc_istate) { 1157 case ISTATE_IDLE: 1158 return (0); 1159 case ISTATE_SENSEI: 1160 out_fdc(fdc, NE7CMD_SENSEI); 1161 fdcresult(fdc); 1162 fdc->sc_istate = ISTATE_IDLE; 1163 FD_SET_SWINTR; 1164 return (1); 1165 case ISTATE_SPURIOUS: 1166 fdcresult(fdc); 1167 fdc->sc_istate = ISTATE_SPURIOUS; 1168 printf("fdc: stray hard interrupt... "); 1169 FD_SET_SWINTR; 1170 return (1); 1171 case ISTATE_DMA: 1172 break; 1173 default: 1174 printf("fdc: goofed ...\n"); 1175 return (1); 1176 } 1177 1178 for (;;) { 1179 register int msr; 1180 1181 msr = *fdc->sc_reg_msr; 1182 1183 if ((msr & NE7_RQM) == 0) 1184 break; 1185 1186 if ((msr & NE7_NDM) == 0) { 1187 fdcresult(fdc); 1188 fdc->sc_istate = ISTATE_IDLE; 1189 ienab_bis(IE_FDSOFT); 1190 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1191 break; 1192 } 1193 1194 if (msr & NE7_DIO) { 1195 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1196 } else { 1197 *fdc->sc_reg_fifo = *fdc->sc_data++; 1198 } 1199 if (--fdc->sc_tc == 0) { 1200 fdc->sc_istate = ISTATE_DONE; 1201 FTC_FLIP; 1202 fdcresult(fdc); 1203 FD_SET_SWINTR; 1204 break; 1205 } 1206 } 1207 return (1); 1208 } 1209 #endif 1210 1211 int 1212 fdcswintr(arg) 1213 void *arg; 1214 { 1215 struct fdc_softc *fdc = arg; 1216 int s; 1217 1218 if (fdc->sc_istate != ISTATE_DONE) 1219 return (0); 1220 1221 fdc->sc_istate = ISTATE_IDLE; 1222 s = splbio(); 1223 fdcstate(fdc); 1224 splx(s); 1225 return (1); 1226 } 1227 1228 int 1229 fdcstate(fdc) 1230 struct fdc_softc *fdc; 1231 { 1232 #define st0 fdc->sc_status[0] 1233 #define st1 fdc->sc_status[1] 1234 #define cyl fdc->sc_status[1] 1235 #define OUT_FDC(fdc, c, s) \ 1236 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1237 1238 struct fd_softc *fd; 1239 struct buf *bp; 1240 int read, head, sec, nblks; 1241 struct fd_type *type; 1242 struct ne7_fd_formb *finfo = NULL; 1243 1244 1245 if (fdc->sc_istate != ISTATE_IDLE) { 1246 /* Trouble... */ 1247 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1248 fdc->sc_state, fdc->sc_istate); 1249 fdc->sc_istate = ISTATE_IDLE; 1250 if (fdc->sc_state == RESETCOMPLETE || 1251 fdc->sc_state == RESETTIMEDOUT) { 1252 panic("fdcintr: spurious interrupt can't be cleared"); 1253 } 1254 goto doreset; 1255 } 1256 1257 loop: 1258 /* Is there a drive for the controller to do a transfer with? */ 1259 fd = fdc->sc_drives.tqh_first; 1260 if (fd == NULL) { 1261 fdc->sc_state = DEVIDLE; 1262 return (0); 1263 } 1264 1265 /* Is there a transfer to this drive? If not, deactivate drive. */ 1266 bp = fd->sc_q.b_actf; 1267 if (bp == NULL) { 1268 fd->sc_ops = 0; 1269 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1270 fd->sc_q.b_active = 0; 1271 goto loop; 1272 } 1273 1274 if (bp->b_flags & B_FORMAT) 1275 finfo = (struct ne7_fd_formb *)bp->b_data; 1276 1277 switch (fdc->sc_state) { 1278 case DEVIDLE: 1279 fdc->sc_errors = 0; 1280 fd->sc_skip = 0; 1281 fd->sc_bcount = bp->b_bcount; 1282 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1283 untimeout(fd_motor_off, fd); 1284 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1285 fdc->sc_state = MOTORWAIT; 1286 return (1); 1287 } 1288 if ((fd->sc_flags & FD_MOTOR) == 0) { 1289 /* Turn on the motor, being careful about pairing. */ 1290 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1291 if (ofd && ofd->sc_flags & FD_MOTOR) { 1292 untimeout(fd_motor_off, ofd); 1293 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1294 } 1295 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1296 fd_set_motor(fdc); 1297 fdc->sc_state = MOTORWAIT; 1298 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1299 /* Allow .25s for motor to stabilize. */ 1300 timeout(fd_motor_on, fd, hz / 4); 1301 } else { 1302 fd->sc_flags &= ~FD_MOTOR_WAIT; 1303 goto loop; 1304 } 1305 return (1); 1306 } 1307 /* Make sure the right drive is selected. */ 1308 fd_set_motor(fdc); 1309 1310 /*FALLTHROUGH*/ 1311 case DOSEEK: 1312 doseek: 1313 if ((fdc->sc_flags & FDC_EIS) && 1314 (bp->b_flags & B_FORMAT) == 0) { 1315 fd->sc_cylin = bp->b_cylin; 1316 /* We use implied seek */ 1317 goto doio; 1318 } 1319 1320 if (fd->sc_cylin == bp->b_cylin) 1321 goto doio; 1322 1323 /* specify command */ 1324 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1325 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1326 /* XXX head load time == 6ms */ 1327 OUT_FDC(fdc, 6 | NE7_SPECIFY_NODMA, SEEKTIMEDOUT); 1328 1329 fdc->sc_istate = ISTATE_SENSEI; 1330 /* seek function */ 1331 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1332 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1333 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1334 1335 fd->sc_cylin = -1; 1336 fdc->sc_state = SEEKWAIT; 1337 fdc->sc_nstat = 0; 1338 1339 fd->sc_dk.dk_seek++; 1340 disk_busy(&fd->sc_dk); 1341 1342 timeout(fdctimeout, fdc, 4 * hz); 1343 return (1); 1344 1345 case DOIO: 1346 doio: 1347 if (finfo != NULL) 1348 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1349 (char *)finfo; 1350 type = fd->sc_type; 1351 sec = fd->sc_blkno % type->seccyl; 1352 nblks = type->seccyl - sec; 1353 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1354 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1355 fd->sc_nblks = nblks; 1356 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1357 head = sec / type->sectrac; 1358 sec -= head * type->sectrac; 1359 #ifdef DIAGNOSTIC 1360 {int block; 1361 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1362 if (block != fd->sc_blkno) { 1363 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1364 #ifdef DDB 1365 Debugger(); 1366 #endif 1367 }} 1368 #endif 1369 read = bp->b_flags & B_READ; 1370 1371 /* Setup for pseudo DMA */ 1372 fdc->sc_data = bp->b_data + fd->sc_skip; 1373 fdc->sc_tc = fd->sc_nbytes; 1374 1375 *fdc->sc_reg_drs = type->rate; 1376 #ifdef FD_DEBUG 1377 if (fdc_debug > 1) 1378 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1379 read ? "read" : "write", fd->sc_drive, 1380 fd->sc_cylin, head, sec, nblks); 1381 #endif 1382 fdc->sc_state = IOCOMPLETE; 1383 fdc->sc_istate = ISTATE_DMA; 1384 fdc->sc_nstat = 0; 1385 if (finfo != NULL) { 1386 /* formatting */ 1387 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1388 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1389 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1390 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1391 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1392 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1393 } else { 1394 if (read) 1395 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1396 else 1397 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1398 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1399 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1400 OUT_FDC(fdc, head, IOTIMEDOUT); 1401 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1402 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1403 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1404 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1405 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1406 } 1407 1408 disk_busy(&fd->sc_dk); 1409 1410 /* allow 2 seconds for operation */ 1411 timeout(fdctimeout, fdc, 2 * hz); 1412 return (1); /* will return later */ 1413 1414 case SEEKWAIT: 1415 untimeout(fdctimeout, fdc); 1416 fdc->sc_state = SEEKCOMPLETE; 1417 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1418 /* allow 1/50 second for heads to settle */ 1419 timeout(fdcpseudointr, fdc, hz / 50); 1420 return (1); /* will return later */ 1421 } 1422 /*FALLTHROUGH*/ 1423 case SEEKCOMPLETE: 1424 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1425 1426 /* Make sure seek really happened. */ 1427 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1428 cyl != bp->b_cylin * fd->sc_type->step) { 1429 #ifdef FD_DEBUG 1430 if (fdc_debug) 1431 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1432 #endif 1433 fdcretry(fdc); 1434 goto loop; 1435 } 1436 fd->sc_cylin = bp->b_cylin; 1437 goto doio; 1438 1439 case IOTIMEDOUT: 1440 FTC_FLIP; 1441 (void)fdcresult(fdc); 1442 /*FALLTHROUGH*/ 1443 case SEEKTIMEDOUT: 1444 case RECALTIMEDOUT: 1445 case RESETTIMEDOUT: 1446 fdcretry(fdc); 1447 goto loop; 1448 1449 case IOCOMPLETE: /* IO DONE, post-analyze */ 1450 untimeout(fdctimeout, fdc); 1451 1452 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1453 1454 if (fdc->sc_nstat != 7 || st1 != 0 || 1455 ((st0 & 0xf8) != 0 && 1456 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1457 #ifdef FD_DEBUG 1458 if (fdc_debug) { 1459 fdcstatus(&fd->sc_dv, 7, 1460 bp->b_flags & B_READ 1461 ? "read failed" : "write failed"); 1462 printf("blkno %d nblks %d nstat %d tc %d\n", 1463 fd->sc_blkno, fd->sc_nblks, 1464 fdc->sc_nstat, fdc->sc_tc); 1465 } 1466 #endif 1467 if (fdc->sc_nstat == 7 && 1468 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1469 1470 /* 1471 * Silently retry overruns if no other 1472 * error bit is set. Adjust threshold. 1473 */ 1474 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1475 if (thr < 15) { 1476 thr++; 1477 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1478 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1479 #ifdef FD_DEBUG 1480 if (fdc_debug) 1481 printf("fdc: %d -> threshold\n", thr); 1482 #endif 1483 fdconf(fdc); 1484 fdc->sc_overruns = 0; 1485 } 1486 if (++fdc->sc_overruns < 3) { 1487 fdc->sc_state = DOIO; 1488 goto loop; 1489 } 1490 } 1491 fdcretry(fdc); 1492 goto loop; 1493 } 1494 if (fdc->sc_errors) { 1495 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1496 fd->sc_skip / FD_BSIZE(fd), 1497 (struct disklabel *)NULL); 1498 printf("\n"); 1499 fdc->sc_errors = 0; 1500 } else { 1501 if (--fdc->sc_overruns < -20) { 1502 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1503 if (thr > 0) { 1504 thr--; 1505 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1506 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1507 #ifdef FD_DEBUG 1508 if (fdc_debug) 1509 printf("fdc: %d -> threshold\n", thr); 1510 #endif 1511 fdconf(fdc); 1512 } 1513 fdc->sc_overruns = 0; 1514 } 1515 } 1516 fd->sc_blkno += fd->sc_nblks; 1517 fd->sc_skip += fd->sc_nbytes; 1518 fd->sc_bcount -= fd->sc_nbytes; 1519 if (finfo == NULL && fd->sc_bcount > 0) { 1520 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1521 goto doseek; 1522 } 1523 fdfinish(fd, bp); 1524 goto loop; 1525 1526 case DORESET: 1527 doreset: 1528 /* try a reset, keep motor on */ 1529 fd_set_motor(fdc); 1530 delay(100); 1531 fdc_reset(fdc); 1532 fdc->sc_nstat = 0; 1533 fdc->sc_istate = ISTATE_SENSEI; 1534 fdc->sc_state = RESETCOMPLETE; 1535 timeout(fdctimeout, fdc, hz / 2); 1536 return (1); /* will return later */ 1537 1538 case RESETCOMPLETE: 1539 untimeout(fdctimeout, fdc); 1540 fdconf(fdc); 1541 1542 /* fall through */ 1543 case DORECAL: 1544 fdc->sc_state = RECALWAIT; 1545 fdc->sc_istate = ISTATE_SENSEI; 1546 fdc->sc_nstat = 0; 1547 /* recalibrate function */ 1548 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1549 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1550 timeout(fdctimeout, fdc, 5 * hz); 1551 return (1); /* will return later */ 1552 1553 case RECALWAIT: 1554 untimeout(fdctimeout, fdc); 1555 fdc->sc_state = RECALCOMPLETE; 1556 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1557 /* allow 1/30 second for heads to settle */ 1558 timeout(fdcpseudointr, fdc, hz / 30); 1559 return (1); /* will return later */ 1560 } 1561 1562 case RECALCOMPLETE: 1563 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1564 #ifdef FD_DEBUG 1565 if (fdc_debug) 1566 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1567 #endif 1568 fdcretry(fdc); 1569 goto loop; 1570 } 1571 fd->sc_cylin = 0; 1572 goto doseek; 1573 1574 case MOTORWAIT: 1575 if (fd->sc_flags & FD_MOTOR_WAIT) 1576 return (1); /* time's not up yet */ 1577 goto doseek; 1578 1579 default: 1580 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1581 return (1); 1582 } 1583 #ifdef DIAGNOSTIC 1584 panic("fdcintr: impossible"); 1585 #endif 1586 #undef st0 1587 #undef st1 1588 #undef cyl 1589 } 1590 1591 void 1592 fdcretry(fdc) 1593 struct fdc_softc *fdc; 1594 { 1595 char bits[64]; 1596 struct fd_softc *fd; 1597 struct buf *bp; 1598 1599 fd = fdc->sc_drives.tqh_first; 1600 bp = fd->sc_q.b_actf; 1601 1602 fdc->sc_overruns = 0; 1603 if (fd->sc_opts & FDOPT_NORETRY) 1604 goto fail; 1605 1606 switch (fdc->sc_errors) { 1607 case 0: 1608 /* try again */ 1609 fdc->sc_state = 1610 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1611 break; 1612 1613 case 1: case 2: case 3: 1614 /* didn't work; try recalibrating */ 1615 fdc->sc_state = DORECAL; 1616 break; 1617 1618 case 4: 1619 /* still no go; reset the bastard */ 1620 fdc->sc_state = DORESET; 1621 break; 1622 1623 default: 1624 fail: 1625 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1626 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1627 fd->sc_skip / FD_BSIZE(fd), 1628 (struct disklabel *)NULL); 1629 1630 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1631 NE7_ST0BITS, bits, sizeof(bits))); 1632 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1633 NE7_ST1BITS, bits, sizeof(bits))); 1634 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1635 NE7_ST2BITS, bits, sizeof(bits))); 1636 printf(" cyl %d head %d sec %d)\n", 1637 fdc->sc_status[3], fdc->sc_status[4], 1638 fdc->sc_status[5]); 1639 } 1640 1641 bp->b_flags |= B_ERROR; 1642 bp->b_error = EIO; 1643 fdfinish(fd, bp); 1644 } 1645 fdc->sc_errors++; 1646 } 1647 1648 int 1649 fdsize(dev) 1650 dev_t dev; 1651 { 1652 1653 /* Swapping to floppies would not make sense. */ 1654 return (-1); 1655 } 1656 1657 int 1658 fddump(dev, blkno, va, size) 1659 dev_t dev; 1660 daddr_t blkno; 1661 caddr_t va; 1662 size_t size; 1663 { 1664 1665 /* Not implemented. */ 1666 return (EINVAL); 1667 } 1668 1669 int 1670 fdioctl(dev, cmd, addr, flag, p) 1671 dev_t dev; 1672 u_long cmd; 1673 caddr_t addr; 1674 int flag; 1675 struct proc *p; 1676 { 1677 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1678 struct fdformat_parms *form_parms; 1679 struct fdformat_cmd *form_cmd; 1680 struct ne7_fd_formb fd_formb; 1681 int il[FD_MAX_NSEC + 1]; 1682 int i, j; 1683 int error; 1684 1685 switch (cmd) { 1686 case DIOCGDINFO: 1687 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1688 return 0; 1689 1690 case DIOCWLABEL: 1691 if ((flag & FWRITE) == 0) 1692 return EBADF; 1693 /* XXX do something */ 1694 return (0); 1695 1696 case DIOCWDINFO: 1697 if ((flag & FWRITE) == 0) 1698 return (EBADF); 1699 1700 error = setdisklabel(fd->sc_dk.dk_label, 1701 (struct disklabel *)addr, 0, 1702 fd->sc_dk.dk_cpulabel); 1703 if (error) 1704 return (error); 1705 1706 error = writedisklabel(dev, fdstrategy, 1707 fd->sc_dk.dk_label, 1708 fd->sc_dk.dk_cpulabel); 1709 return (error); 1710 1711 case DIOCLOCK: 1712 /* 1713 * Nothing to do here, really. 1714 */ 1715 return (0); 1716 1717 case DIOCEJECT: 1718 fd_do_eject(fd); 1719 return (0); 1720 1721 case FDIOCGETFORMAT: 1722 form_parms = (struct fdformat_parms *)addr; 1723 form_parms->fdformat_version = FDFORMAT_VERSION; 1724 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1725 form_parms->ncyl = fd->sc_type->cylinders; 1726 form_parms->nspt = fd->sc_type->sectrac; 1727 form_parms->ntrk = fd->sc_type->heads; 1728 form_parms->stepspercyl = fd->sc_type->step; 1729 form_parms->gaplen = fd->sc_type->gap2; 1730 form_parms->fillbyte = fd->sc_type->fillbyte; 1731 form_parms->interleave = fd->sc_type->interleave; 1732 switch (fd->sc_type->rate) { 1733 case FDC_500KBPS: 1734 form_parms->xfer_rate = 500 * 1024; 1735 break; 1736 case FDC_300KBPS: 1737 form_parms->xfer_rate = 300 * 1024; 1738 break; 1739 case FDC_250KBPS: 1740 form_parms->xfer_rate = 250 * 1024; 1741 break; 1742 default: 1743 return (EINVAL); 1744 } 1745 return (0); 1746 1747 case FDIOCSETFORMAT: 1748 if ((flag & FWRITE) == 0) 1749 return (EBADF); /* must be opened for writing */ 1750 1751 form_parms = (struct fdformat_parms *)addr; 1752 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1753 return (EINVAL);/* wrong version of formatting prog */ 1754 1755 i = form_parms->nbps >> 7; 1756 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1757 i & ~(1 << (ffs(i)-1))) 1758 /* not a power-of-two multiple of 128 */ 1759 return (EINVAL); 1760 1761 switch (form_parms->xfer_rate) { 1762 case 500 * 1024: 1763 fd->sc_type->rate = FDC_500KBPS; 1764 break; 1765 case 300 * 1024: 1766 fd->sc_type->rate = FDC_300KBPS; 1767 break; 1768 case 250 * 1024: 1769 fd->sc_type->rate = FDC_250KBPS; 1770 break; 1771 default: 1772 return (EINVAL); 1773 } 1774 1775 if (form_parms->nspt > FD_MAX_NSEC || 1776 form_parms->fillbyte > 0xff || 1777 form_parms->interleave > 0xff) 1778 return EINVAL; 1779 fd->sc_type->sectrac = form_parms->nspt; 1780 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1781 return EINVAL; 1782 fd->sc_type->heads = form_parms->ntrk; 1783 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1784 fd->sc_type->secsize = ffs(i)-1; 1785 fd->sc_type->gap2 = form_parms->gaplen; 1786 fd->sc_type->cylinders = form_parms->ncyl; 1787 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1788 form_parms->nbps / DEV_BSIZE; 1789 fd->sc_type->step = form_parms->stepspercyl; 1790 fd->sc_type->fillbyte = form_parms->fillbyte; 1791 fd->sc_type->interleave = form_parms->interleave; 1792 return (0); 1793 1794 case FDIOCFORMAT_TRACK: 1795 if((flag & FWRITE) == 0) 1796 /* must be opened for writing */ 1797 return (EBADF); 1798 form_cmd = (struct fdformat_cmd *)addr; 1799 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1800 /* wrong version of formatting prog */ 1801 return (EINVAL); 1802 1803 if (form_cmd->head >= fd->sc_type->heads || 1804 form_cmd->cylinder >= fd->sc_type->cylinders) { 1805 return (EINVAL); 1806 } 1807 1808 fd_formb.head = form_cmd->head; 1809 fd_formb.cyl = form_cmd->cylinder; 1810 fd_formb.transfer_rate = fd->sc_type->rate; 1811 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1812 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1813 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1814 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1815 1816 bzero(il, sizeof il); 1817 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1818 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1819 j++; 1820 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1821 j += fd->sc_type->interleave; 1822 } 1823 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1824 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1825 fd_formb.fd_formb_headno(i) = form_cmd->head; 1826 fd_formb.fd_formb_secno(i) = il[i+1]; 1827 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1828 } 1829 1830 return fdformat(dev, &fd_formb, p); 1831 1832 case FDIOCGETOPTS: /* get drive options */ 1833 *(int *)addr = fd->sc_opts; 1834 return (0); 1835 1836 case FDIOCSETOPTS: /* set drive options */ 1837 fd->sc_opts = *(int *)addr; 1838 return (0); 1839 1840 #ifdef DEBUG 1841 case _IO('f', 100): 1842 { 1843 int i; 1844 struct fdc_softc *fdc = (struct fdc_softc *) 1845 fd->sc_dv.dv_parent; 1846 1847 out_fdc(fdc, NE7CMD_DUMPREG); 1848 fdcresult(fdc); 1849 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1850 for (i = 0; i < fdc->sc_nstat; i++) 1851 printf(" 0x%x", fdc->sc_status[i]); 1852 printf(">\n"); 1853 } 1854 1855 return (0); 1856 case _IOW('f', 101, int): 1857 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1858 ~CFG_THRHLD_MASK; 1859 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1860 (*(int *)addr & CFG_THRHLD_MASK); 1861 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1862 return (0); 1863 case _IO('f', 102): 1864 { 1865 int i; 1866 struct fdc_softc *fdc = (struct fdc_softc *) 1867 fd->sc_dv.dv_parent; 1868 out_fdc(fdc, NE7CMD_SENSEI); 1869 fdcresult(fdc); 1870 printf("sensei(%d regs): <", fdc->sc_nstat); 1871 for (i=0; i< fdc->sc_nstat; i++) 1872 printf(" 0x%x", fdc->sc_status[i]); 1873 } 1874 printf(">\n"); 1875 return (0); 1876 #endif 1877 default: 1878 return (ENOTTY); 1879 } 1880 1881 #ifdef DIAGNOSTIC 1882 panic("fdioctl: impossible"); 1883 #endif 1884 } 1885 1886 int 1887 fdformat(dev, finfo, p) 1888 dev_t dev; 1889 struct ne7_fd_formb *finfo; 1890 struct proc *p; 1891 { 1892 int rv = 0, s; 1893 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1894 struct fd_type *type = fd->sc_type; 1895 struct buf *bp; 1896 1897 /* set up a buffer header for fdstrategy() */ 1898 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1899 if (bp == 0) 1900 return (ENOBUFS); 1901 1902 PHOLD(p); 1903 bzero((void *)bp, sizeof(struct buf)); 1904 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1905 bp->b_proc = p; 1906 bp->b_dev = dev; 1907 1908 /* 1909 * Calculate a fake blkno, so fdstrategy() would initiate a 1910 * seek to the requested cylinder. 1911 */ 1912 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1913 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1914 / DEV_BSIZE; 1915 1916 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1917 bp->b_data = (caddr_t)finfo; 1918 1919 #ifdef FD_DEBUG 1920 if (fdc_debug) 1921 printf("fdformat: blkno 0x%x count %ld\n", 1922 bp->b_blkno, bp->b_bcount); 1923 #endif 1924 1925 /* now do the format */ 1926 fdstrategy(bp); 1927 1928 /* ...and wait for it to complete */ 1929 s = splbio(); 1930 while (!(bp->b_flags & B_DONE)) { 1931 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1932 if (rv == EWOULDBLOCK) 1933 break; 1934 } 1935 splx(s); 1936 1937 if (rv == EWOULDBLOCK) { 1938 /* timed out */ 1939 rv = EIO; 1940 biodone(bp); 1941 } 1942 if (bp->b_flags & B_ERROR) { 1943 rv = bp->b_error; 1944 } 1945 PRELE(p); 1946 free(bp, M_TEMP); 1947 return (rv); 1948 } 1949 1950 void 1951 fdgetdisklabel(dev) 1952 dev_t dev; 1953 { 1954 int unit = FDUNIT(dev), i; 1955 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1956 struct disklabel *lp = fd->sc_dk.dk_label; 1957 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1958 1959 bzero(lp, sizeof(struct disklabel)); 1960 bzero(lp, sizeof(struct cpu_disklabel)); 1961 1962 lp->d_type = DTYPE_FLOPPY; 1963 lp->d_secsize = FD_BSIZE(fd); 1964 lp->d_secpercyl = fd->sc_type->seccyl; 1965 lp->d_nsectors = fd->sc_type->sectrac; 1966 lp->d_ncylinders = fd->sc_type->cylinders; 1967 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1968 lp->d_rpm = 3600; /* XXX like it matters... */ 1969 1970 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1971 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1972 lp->d_interleave = 1; 1973 1974 lp->d_partitions[RAW_PART].p_offset = 0; 1975 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1976 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1977 lp->d_npartitions = RAW_PART + 1; 1978 1979 lp->d_magic = DISKMAGIC; 1980 lp->d_magic2 = DISKMAGIC; 1981 lp->d_checksum = dkcksum(lp); 1982 1983 /* 1984 * Call the generic disklabel extraction routine. If there's 1985 * not a label there, fake it. 1986 */ 1987 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1988 strncpy(lp->d_packname, "default label", 1989 sizeof(lp->d_packname)); 1990 /* 1991 * Reset the partition info; it might have gotten 1992 * trashed in readdisklabel(). 1993 * 1994 * XXX Why do we have to do this? readdisklabel() 1995 * should be safe... 1996 */ 1997 for (i = 0; i < MAXPARTITIONS; ++i) { 1998 lp->d_partitions[i].p_offset = 0; 1999 if (i == RAW_PART) { 2000 lp->d_partitions[i].p_size = 2001 lp->d_secpercyl * lp->d_ncylinders; 2002 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2003 } else { 2004 lp->d_partitions[i].p_size = 0; 2005 lp->d_partitions[i].p_fstype = FS_UNUSED; 2006 } 2007 } 2008 lp->d_npartitions = RAW_PART + 1; 2009 } 2010 } 2011 2012 void 2013 fd_do_eject(fd) 2014 struct fd_softc *fd; 2015 { 2016 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2017 2018 if (CPU_ISSUN4C) { 2019 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2020 delay(10); 2021 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2022 return; 2023 } 2024 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 2025 int dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2026 *fdc->sc_reg_dor = dor | FDO_EJ; 2027 delay(10); 2028 *fdc->sc_reg_dor = FDO_FRST | FDO_DS; 2029 return; 2030 } 2031 } 2032 2033 #ifdef MEMORY_DISK_HOOKS 2034 int fd_read_md_image __P((size_t *, caddr_t *)); 2035 #endif 2036 2037 /* ARGSUSED */ 2038 void 2039 fd_mountroot_hook(dev) 2040 struct device *dev; 2041 { 2042 int c; 2043 2044 fd_do_eject((struct fd_softc *)dev); 2045 printf("Insert filesystem floppy and press return."); 2046 for (;;) { 2047 c = cngetc(); 2048 if ((c == '\r') || (c == '\n')) { 2049 printf("\n"); 2050 break; 2051 } 2052 } 2053 #ifdef MEMORY_DISK_HOOKS 2054 { 2055 extern int (*md_read_image) __P((size_t *, caddr_t *)); 2056 md_read_image = fd_read_md_image; 2057 } 2058 #endif 2059 } 2060 2061 #ifdef MEMORY_DISK_HOOKS 2062 2063 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2064 2065 int 2066 fd_read_md_image(sizep, addrp) 2067 size_t *sizep; 2068 caddr_t *addrp; 2069 { 2070 struct buf buf, *bp = &buf; 2071 dev_t dev; 2072 off_t offset; 2073 caddr_t addr; 2074 2075 dev = makedev(54,0); /* XXX */ 2076 2077 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2078 *addrp = addr; 2079 2080 if (fdopen(dev, 0, S_IFCHR, NULL)) 2081 panic("fd: mountroot: fdopen"); 2082 2083 offset = 0; 2084 2085 for (;;) { 2086 bp->b_dev = dev; 2087 bp->b_error = 0; 2088 bp->b_resid = 0; 2089 bp->b_proc = NULL; 2090 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2091 bp->b_blkno = btodb(offset); 2092 bp->b_bcount = DEV_BSIZE; 2093 bp->b_data = addr; 2094 fdstrategy(bp); 2095 while ((bp->b_flags & B_DONE) == 0) { 2096 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2097 } 2098 if (bp->b_error) 2099 panic("fd: mountroot: fdread error %d", bp->b_error); 2100 2101 if (bp->b_resid != 0) 2102 break; 2103 2104 addr += DEV_BSIZE; 2105 offset += DEV_BSIZE; 2106 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2107 break; 2108 } 2109 (void)fdclose(dev, 0, S_IFCHR, NULL); 2110 *sizep = offset; 2111 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2112 return (0); 2113 } 2114 #endif 2115
Indexes created Fri Oct 03 02:09:57 GMT 2025