1 /* $NetBSD: fd.c,v 1.33 2002/11/01 11:31:54 mrg 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 #include "opt_ddb.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/callout.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 #include <uvm/uvm_extern.h> 67 68 #include <machine/cpu.h> 69 #include <machine/autoconf.h> 70 71 #include <sun3/dev/fdreg.h> 72 #include <sun3/dev/fdvar.h> 73 74 /* 75 * Print a complaint when no fd children were specified 76 * in the config file. Better than a link error... 77 * 78 * XXX: Some folks say this driver should be split in two, 79 * but that seems pointless with ONLY one type of child. 80 * (Thankfully, no 3/80 boxes have floppy tapes!:) 81 */ 82 #include "fdc.h" 83 #if NFD == 0 84 #error "fdc but no fd?" 85 #endif 86 87 #define FDUNIT(dev) (minor(dev) / 8) 88 #define FDTYPE(dev) (minor(dev) % 8) 89 90 /* XXX misuse a flag to identify format operation */ 91 #define B_FORMAT B_XXX 92 93 #ifdef FD_DEBUG 94 int fdc_debug = 0; 95 #endif 96 97 enum fdc_state { 98 DEVIDLE = 0, 99 MOTORWAIT, 100 DOSEEK, 101 SEEKWAIT, 102 SEEKTIMEDOUT, 103 SEEKCOMPLETE, 104 DOIO, 105 IOCOMPLETE, 106 IOTIMEDOUT, 107 DORESET, 108 RESETCOMPLETE, 109 RESETTIMEDOUT, 110 DORECAL, 111 RECALWAIT, 112 RECALTIMEDOUT, 113 RECALCOMPLETE, 114 }; 115 116 /* software state, per controller */ 117 struct fdc_softc { 118 struct device sc_dev; /* boilerplate */ 119 caddr_t sc_reg; 120 121 struct callout sc_timo_ch; /* timeout callout */ 122 struct callout sc_intr_ch; /* pseudo-intr callout */ 123 124 struct fd_softc *sc_fd[4]; /* pointers to children */ 125 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 126 enum fdc_state sc_state; 127 int sc_flags; 128 #define FDC_82077 0x01 129 #define FDC_NEEDHEADSETTLE 0x02 130 #define FDC_EIS 0x04 131 int sc_errors; /* number of retries so far */ 132 int sc_overruns; /* number of DMA overruns */ 133 int sc_cfg; /* current configuration */ 134 int sc_fcr; /* current image of floppy ctrlr reg. */ 135 struct fdcio sc_io; 136 #define sc_reg_msr sc_io.fdcio_reg_msr 137 #define sc_reg_fifo sc_io.fdcio_reg_fifo 138 #define sc_reg_fcr sc_io.fdcio_reg_fcr 139 #define sc_reg_fvr sc_io.fdcio_reg_fvr 140 #define sc_reg_drs sc_io.fdcio_reg_msr 141 #define sc_istate sc_io.fdcio_istate 142 #define sc_data sc_io.fdcio_data 143 #define sc_tc sc_io.fdcio_tc 144 #define sc_nstat sc_io.fdcio_nstat 145 #define sc_status sc_io.fdcio_status 146 #define sc_intrcnt sc_io.fdcio_intrcnt 147 }; 148 149 /* controller driver configuration */ 150 int fdcmatch __P((struct device *, struct cfdata *, void *)); 151 void fdcattach __P((struct device *, struct device *, void *)); 152 153 CFATTACH_DECL(fdc, sizeof(struct fdc_softc), 154 fdcmatch, fdcattach, NULL, NULL); 155 156 extern struct cfdriver fdc_cd; 157 158 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 159 160 /* 161 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 162 * we tell them apart. 163 */ 164 struct fd_type { 165 int sectrac; /* sectors per track */ 166 int heads; /* number of heads */ 167 int seccyl; /* sectors per cylinder */ 168 int secsize; /* size code for sectors */ 169 int datalen; /* data len when secsize = 0 */ 170 int steprate; /* step rate and head unload time */ 171 int gap1; /* gap len between sectors */ 172 int gap2; /* formatting gap */ 173 int tracks; /* total num of tracks */ 174 int size; /* size of disk in sectors */ 175 int step; /* steps per cylinder */ 176 int rate; /* transfer speed code */ 177 int fillbyte; /* format fill byte */ 178 int interleave; /* interleave factor (formatting) */ 179 char *name; 180 }; 181 182 /* The order of entries in the following table is important -- BEWARE! */ 183 struct fd_type fd_types[] = { 184 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 185 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 186 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 187 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 188 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 189 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 190 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 191 }; 192 193 /* software state, per disk (with up to 4 disks per ctlr) */ 194 struct fd_softc { 195 struct device sc_dv; /* generic device info */ 196 struct disk sc_dk; /* generic disk info */ 197 198 struct fd_type *sc_deftype; /* default type descriptor */ 199 struct fd_type *sc_type; /* current type descriptor */ 200 201 struct callout sc_motoron_ch; 202 struct callout sc_motoroff_ch; 203 204 daddr_t sc_blkno; /* starting block number */ 205 int sc_bcount; /* byte count left */ 206 int sc_skip; /* bytes already transferred */ 207 int sc_nblks; /* number of blocks currently transferring */ 208 int sc_nbytes; /* number of bytes currently transferring */ 209 210 int sc_drive; /* physical unit number */ 211 int sc_flags; 212 #define FD_OPEN 0x01 /* it's open */ 213 #define FD_MOTOR 0x02 /* motor should be on */ 214 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 215 int sc_cylin; /* where we think the head is */ 216 int sc_opts; /* user-set options */ 217 218 void *sc_sdhook; /* shutdownhook cookie */ 219 220 TAILQ_ENTRY(fd_softc) sc_drivechain; 221 int sc_ops; /* I/O ops since last switch */ 222 struct bufq_state sc_q; /* pending I/O requests */ 223 int sc_active; /* number of active I/O operations */ 224 }; 225 226 /* floppy driver configuration */ 227 int fdmatch __P((struct device *, struct cfdata *, void *)); 228 void fdattach __P((struct device *, struct device *, void *)); 229 230 CFATTACH_DECL(fd, sizeof(struct fd_softc), 231 fdmatch, fdattach, NULL, NULL); 232 233 extern struct cfdriver fd_cd; 234 235 dev_type_open(fdopen); 236 dev_type_close(fdclose); 237 dev_type_read(fdread); 238 dev_type_write(fdwrite); 239 dev_type_ioctl(fdioctl); 240 dev_type_strategy(fdstrategy); 241 242 const struct bdevsw fd_bdevsw = { 243 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 244 }; 245 246 const struct cdevsw fd_cdevsw = { 247 fdopen, fdclose, fdread, fdwrite, fdioctl, 248 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 249 }; 250 251 void fdgetdisklabel __P((dev_t)); 252 int fd_get_parms __P((struct fd_softc *)); 253 void fdstart __P((struct fd_softc *)); 254 int fdprint __P((void *, const char *)); 255 256 struct dkdriver fddkdriver = { fdstrategy }; 257 258 struct fd_type *fd_nvtotype __P((char *, int, int)); 259 void fd_set_motor __P((struct fdc_softc *fdc)); 260 void fd_motor_off __P((void *arg)); 261 void fd_motor_on __P((void *arg)); 262 int fdcresult __P((struct fdc_softc *fdc)); 263 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 264 void fdcstart __P((struct fdc_softc *fdc)); 265 void fdcstatus __P((struct device *dv, int n, char *s)); 266 void fdc_reset __P((struct fdc_softc *fdc)); 267 void fdctimeout __P((void *arg)); 268 void fdcpseudointr __P((void *arg)); 269 int fdchwintr __P((void *)); 270 int fdcswintr __P((void *)); 271 int fdcstate __P((struct fdc_softc *)); 272 void fdcretry __P((struct fdc_softc *fdc)); 273 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 274 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 275 void fd_do_eject __P((struct fdc_softc *, int)); 276 void fd_mountroot_hook __P((struct device *)); 277 static void fdconf __P((struct fdc_softc *)); 278 279 static int fdc_softpend = 0; 280 #ifndef FDC_SOFTPRI 281 #define FDC_SOFTPRI 2 282 #endif 283 #define FD_SET_SWINTR() { fdc_softpend = 1; isr_soft_request(FDC_SOFTPRI); } 284 285 /* 286 * The Floppy Control Register on the sun3x, not to be confused with the 287 * Floppy ControllER Registers that this driver mostly insterfaces with, 288 * controls some of the auxillary functions of the floppy drive. These 289 * include asserting the floppy eject and terminal data count (or TC) pins 290 * of the floppy drive and controller chip respectively. 291 * 292 * Often it is necessary to toggle individual bits within this register 293 * while keeping the others untouched. However, the register does not 294 * present its latched data to the processor when read. This prevents the 295 * use of a read-modify-write cycle that would normally be used to modify 296 * individual bits. To get around this we must keep a copy of register's 297 * current value and always insure that when we wish to modify the register, 298 * we actually modify the copy and synchronize the register to it. 299 */ 300 #define FCR_REG_SYNC() (*fdc->sc_reg_fcr = fdc->sc_fcr) 301 302 int 303 fdcmatch(parent, match, aux) 304 struct device *parent; 305 struct cfdata *match; 306 void *aux; 307 { 308 struct confargs *ca = aux; 309 310 if (bus_peek(ca->ca_bustype, ca->ca_paddr, sizeof(u_char)) == -1) 311 return (0); 312 313 return (1); 314 } 315 316 /* 317 * Arguments passed between fdcattach and fdprobe. 318 */ 319 struct fdc_attach_args { 320 int fa_drive; 321 struct bootpath *fa_bootpath; 322 struct fd_type *fa_deftype; 323 }; 324 325 /* 326 * Print the location of a disk drive (called just before attaching the 327 * the drive). If `fdc' is not NULL, the drive was found but was not 328 * in the system config file; print the drive name as well. 329 * Return QUIET (config_find ignores this if the device was configured) to 330 * avoid printing `fdN not configured' messages. 331 */ 332 int 333 fdprint(aux, fdc) 334 void *aux; 335 const char *fdc; 336 { 337 struct fdc_attach_args *fa = aux; 338 339 if (!fdc) 340 printf(" drive %d", fa->fa_drive); 341 return (QUIET); 342 } 343 344 static void 345 fdconf(fdc) 346 struct fdc_softc *fdc; 347 { 348 int vroom; 349 350 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 351 return; 352 353 /* 354 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 355 * the PROM thinks is appropriate. 356 */ 357 if ((vroom = fdc->sc_status[7]) == 0) 358 vroom = 0x64; 359 360 /* Configure controller to use FIFO and Implied Seek */ 361 out_fdc(fdc, NE7CMD_CFG); 362 out_fdc(fdc, vroom); 363 out_fdc(fdc, fdc->sc_cfg); 364 out_fdc(fdc, 0); /* PRETRK */ 365 /* No result phase */ 366 } 367 368 void 369 fdcattach(parent, self, aux) 370 struct device *parent, *self; 371 void *aux; 372 { 373 struct confargs *ca = aux; 374 struct fdc_softc *fdc = (void *)self; 375 struct fdc_attach_args fa; 376 int pri, vec; 377 char code; 378 379 fdc->sc_reg = (caddr_t)bus_mapin(ca->ca_bustype, ca->ca_paddr, 380 sizeof(union fdreg)); 381 382 callout_init(&fdc->sc_timo_ch); 383 callout_init(&fdc->sc_intr_ch); 384 385 fdc->sc_state = DEVIDLE; 386 fdc->sc_istate = ISTATE_IDLE; 387 fdc->sc_flags |= FDC_EIS; 388 TAILQ_INIT(&fdc->sc_drives); 389 390 /* Assume a 82072 */ 391 code = '2'; 392 393 if (code == '7') { 394 panic("no 82077 fdc in this kernel"); 395 /* NOTREACHED */ 396 } else { 397 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 398 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 399 400 fdc->sc_reg_fcr = ((volatile u_int8_t *) fdc->sc_reg) 401 + FDC_FCR_OFFSET; 402 fdc->sc_reg_fvr = ((volatile u_int8_t *) fdc->sc_reg) 403 + FDC_FVR_OFFSET; 404 } 405 406 isr_add_autovect(fdcswintr, fdc, FDC_SOFTPRI); 407 pri = ca->ca_intpri; 408 vec = ca->ca_intvec; 409 if (vec == -1) { 410 /* Tell the FDC to fake an autovector. */ 411 vec = 0x18 + pri; /* XXX */ 412 isr_add_autovect(fdchwintr, fdc, pri); 413 } else { 414 /* An OBIO bus with vectors? Weird exception. */ 415 isr_add_vectored(fdchwintr, fdc, pri, vec); 416 } 417 *fdc->sc_reg_fvr = vec; /* Program controller w/ interrupt vector */ 418 419 printf(": (softpri %d) chip 8207%c\n", FDC_SOFTPRI, code); 420 421 #ifdef FD_DEBUG 422 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 423 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 424 if (fdc_debug) 425 printf("[version cmd]"); 426 } 427 #endif 428 429 fdc_reset(fdc); 430 /* 431 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 432 * Note: CFG_EFIFO is active-low, initial threshold value: 8 433 */ 434 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 435 fdconf(fdc); 436 437 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 438 fdc->sc_dev.dv_xname, "intr"); 439 440 /* physical limit: four drives per controller. */ 441 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 442 fa.fa_deftype = NULL; /* unknown */ 443 fa.fa_deftype = &fd_types[0]; /* XXX */ 444 (void)config_found(self, (void *)&fa, fdprint); 445 } 446 } 447 448 int 449 fdmatch(parent, match, aux) 450 struct device *parent; 451 struct cfdata *match; 452 void *aux; 453 { 454 struct fdc_softc *fdc = (void *)parent; 455 struct fdc_attach_args *fa = aux; 456 int drive = fa->fa_drive; 457 int n, ok; 458 459 if (drive > 0) 460 /* XXX - for now, punt > 1 drives */ 461 return (0); 462 463 /* select drive and turn on motor */ 464 fdc->sc_fcr |= FCR_DSEL(drive) | FCR_MTRON; 465 FCR_REG_SYNC(); 466 /* wait for motor to spin up */ 467 delay(250000); 468 469 fdc->sc_nstat = 0; 470 out_fdc(fdc, NE7CMD_RECAL); 471 out_fdc(fdc, drive); 472 /* wait for recalibrate */ 473 for (n = 0; n < 10000; n++) { 474 delay(1000); 475 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 476 /* wait a bit longer till device *really* is ready */ 477 delay(100000); 478 if (out_fdc(fdc, NE7CMD_SENSEI)) 479 break; 480 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 481 /* 482 * Got `invalid command'; we interpret it 483 * to mean that the re-calibrate hasn't in 484 * fact finished yet 485 */ 486 continue; 487 break; 488 } 489 } 490 n = fdc->sc_nstat; 491 #ifdef FD_DEBUG 492 if (fdc_debug) { 493 int i; 494 printf("fdprobe: %d stati:", n); 495 for (i = 0; i < n; i++) 496 printf(" %x", fdc->sc_status[i]); 497 printf("\n"); 498 } 499 #endif 500 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 501 502 /* turn off motor */ 503 fdc->sc_fcr &= ~(FCR_DSEL(drive)|FCR_MTRON); 504 FCR_REG_SYNC(); 505 506 return (ok); 507 } 508 509 /* 510 * Controller is working, and drive responded. Attach it. 511 */ 512 void 513 fdattach(parent, self, aux) 514 struct device *parent, *self; 515 void *aux; 516 { 517 struct fdc_softc *fdc = (void *)parent; 518 struct fd_softc *fd = (void *)self; 519 struct fdc_attach_args *fa = aux; 520 struct fd_type *type = fa->fa_deftype; 521 int drive = fa->fa_drive; 522 523 callout_init(&fd->sc_motoron_ch); 524 callout_init(&fd->sc_motoroff_ch); 525 526 /* XXX Allow `flags' to override device type? */ 527 528 if (type) 529 printf(": %s %d cyl, %d head, %d sec\n", type->name, 530 type->tracks, type->heads, type->sectrac); 531 else 532 printf(": density unknown\n"); 533 534 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 535 fd->sc_cylin = -1; 536 fd->sc_drive = drive; 537 fd->sc_deftype = type; 538 fdc->sc_fd[drive] = fd; 539 540 /* 541 * Initialize and attach the disk structure. 542 */ 543 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 544 fd->sc_dk.dk_driver = &fddkdriver; 545 disk_attach(&fd->sc_dk); 546 547 #ifdef sparc 548 /* 549 * We're told if we're the boot device in fdcattach(). 550 */ 551 if (fa->fa_bootpath) 552 fa->fa_bootpath->dev = &fd->sc_dv; 553 #endif 554 #define OUT_FDC(sc, c) { \ 555 if (out_fdc((sc), (c))) \ 556 printf("fdc: specify command failed.\n");\ 557 } 558 /* specify command */ 559 OUT_FDC(fdc, NE7CMD_SPECIFY); 560 OUT_FDC(fdc, type->steprate); 561 /* 562 * The '|1' in the following statement turns on the 'Non-DMA' bit 563 * specifier in the last byte of the SPECIFY command as described in the 564 * datasheet I have. This is necessary for the driver to work on the 565 * sun3x, because the system will not respond to the chip's requests 566 * for DMA; there is no hardware on the motherboard to support it. 567 * By enabling this bit, we will force the chip to interrupt when its 568 * FIFO is full, at which point the interrupt handler will empty it and 569 * continue. This is ``pseudo-DMA''. 570 * -J 571 */ 572 OUT_FDC(fdc, 6|1); /* XXX head load time == 6ms */ 573 #undef OUT_FDC 574 575 /* 576 * Establish a mountroot_hook anyway in case we booted 577 * with RB_ASKNAME and get selected as the boot device. 578 */ 579 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 580 581 /* Make sure the drive motor gets turned off at shutdown time. */ 582 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 583 } 584 585 __inline struct fd_type * 586 fd_dev_to_type(fd, dev) 587 struct fd_softc *fd; 588 dev_t dev; 589 { 590 int type = FDTYPE(dev); 591 592 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 593 return (NULL); 594 return (type ? &fd_types[type - 1] : fd->sc_deftype); 595 } 596 597 void 598 fdstrategy(bp) 599 struct buf *bp; /* IO operation to perform */ 600 { 601 struct fd_softc *fd; 602 int unit = FDUNIT(bp->b_dev); 603 int sz; 604 int s; 605 606 /* Valid unit, controller, and request? */ 607 if (unit >= fd_cd.cd_ndevs || 608 (fd = fd_cd.cd_devs[unit]) == 0 || 609 bp->b_blkno < 0 || 610 ((bp->b_bcount % FDC_BSIZE) != 0 && 611 (bp->b_flags & B_FORMAT) == 0)) { 612 bp->b_error = EINVAL; 613 goto bad; 614 } 615 616 /* If it's a null transfer, return immediately. */ 617 if (bp->b_bcount == 0) 618 goto done; 619 620 sz = howmany(bp->b_bcount, FDC_BSIZE); 621 622 if (bp->b_blkno + sz > fd->sc_type->size) { 623 sz = fd->sc_type->size - bp->b_blkno; 624 if (sz == 0) { 625 /* If exactly at end of disk, return EOF. */ 626 bp->b_resid = bp->b_bcount; 627 goto done; 628 } 629 if (sz < 0) { 630 /* If past end of disk, return EINVAL. */ 631 bp->b_error = EINVAL; 632 goto bad; 633 } 634 /* Otherwise, truncate request. */ 635 bp->b_bcount = sz << DEV_BSHIFT; 636 } 637 638 bp->b_rawblkno = bp->b_blkno; 639 bp->b_cylinder = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 640 641 #ifdef FD_DEBUG 642 if (fdc_debug > 1) 643 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 644 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 645 #endif 646 647 /* Queue transfer on drive, activate drive and controller if idle. */ 648 s = splbio(); 649 BUFQ_PUT(&fd->sc_q, bp); 650 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 651 if (fd->sc_active == 0) 652 fdstart(fd); 653 #ifdef DIAGNOSTIC 654 else { 655 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 656 if (fdc->sc_state == DEVIDLE) { 657 printf("fdstrategy: controller inactive\n"); 658 fdcstart(fdc); 659 } 660 } 661 #endif 662 splx(s); 663 return; 664 665 bad: 666 bp->b_flags |= B_ERROR; 667 done: 668 /* Toss transfer; we're done early. */ 669 biodone(bp); 670 } 671 672 void 673 fdstart(fd) 674 struct fd_softc *fd; 675 { 676 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 677 int active = fdc->sc_drives.tqh_first != 0; 678 679 /* Link into controller queue. */ 680 fd->sc_active = 1; 681 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 682 683 /* If controller not already active, start it. */ 684 if (!active) 685 fdcstart(fdc); 686 } 687 688 void 689 fdfinish(fd, bp) 690 struct fd_softc *fd; 691 struct buf *bp; 692 { 693 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 694 695 /* 696 * Move this drive to the end of the queue to give others a `fair' 697 * chance. We only force a switch if N operations are completed while 698 * another drive is waiting to be serviced, since there is a long motor 699 * startup delay whenever we switch. 700 */ 701 (void)BUFQ_GET(&fd->sc_q); 702 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 703 fd->sc_ops = 0; 704 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 705 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 706 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 707 } else 708 fd->sc_active = 0; 709 } 710 bp->b_resid = fd->sc_bcount; 711 fd->sc_skip = 0; 712 713 biodone(bp); 714 /* turn off motor 5s from now */ 715 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 716 fdc->sc_state = DEVIDLE; 717 } 718 719 void 720 fdc_reset(fdc) 721 struct fdc_softc *fdc; 722 { 723 fdc->sc_fcr = 0; 724 FCR_REG_SYNC(); 725 726 *fdc->sc_reg_drs = DRS_RESET; 727 delay(10); 728 *fdc->sc_reg_drs = 0; 729 730 #ifdef FD_DEBUG 731 if (fdc_debug) 732 printf("fdc reset\n"); 733 #endif 734 } 735 736 void 737 fd_set_motor(fdc) 738 struct fdc_softc *fdc; 739 { 740 struct fd_softc *fd; 741 int n; 742 743 int on = 0; 744 745 for (n = 0; n < 4; n++) 746 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 747 on = 1; 748 if (on) { 749 fdc->sc_fcr |= FCR_DSEL(0)|FCR_MTRON; /* XXX */ 750 } else { 751 fdc->sc_fcr &= ~(FCR_DSEL(0)|FCR_MTRON); /* XXX */ 752 } 753 FCR_REG_SYNC(); 754 } 755 756 void 757 fd_motor_off(arg) 758 void *arg; 759 { 760 struct fd_softc *fd = arg; 761 int s; 762 763 s = splbio(); 764 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 765 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 766 splx(s); 767 } 768 769 void 770 fd_motor_on(arg) 771 void *arg; 772 { 773 struct fd_softc *fd = arg; 774 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 775 int s; 776 777 s = splbio(); 778 fd->sc_flags &= ~FD_MOTOR_WAIT; 779 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 780 (void) fdcstate(fdc); 781 splx(s); 782 } 783 784 int 785 fdcresult(fdc) 786 struct fdc_softc *fdc; 787 { 788 u_char i; 789 int j = 100000, 790 n = 0; 791 792 for (; j; j--) { 793 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 794 if (i == NE7_RQM) 795 return (fdc->sc_nstat = n); 796 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 797 if (n >= sizeof(fdc->sc_status)) { 798 log(LOG_ERR, "fdcresult: overrun\n"); 799 return (-1); 800 } 801 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 802 } else 803 delay(10); 804 } 805 log(LOG_ERR, "fdcresult: timeout\n"); 806 return (fdc->sc_nstat = -1); 807 } 808 809 int 810 out_fdc(fdc, x) 811 struct fdc_softc *fdc; 812 u_char x; 813 { 814 int i = 100000; 815 816 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 817 delay(1); 818 if (i <= 0) 819 return (-1); 820 821 *fdc->sc_reg_fifo = x; 822 return (0); 823 } 824 825 int 826 fdopen(dev, flags, fmt, p) 827 dev_t dev; 828 int flags, fmt; 829 struct proc *p; 830 { 831 int unit, pmask; 832 struct fd_softc *fd; 833 struct fd_type *type; 834 835 unit = FDUNIT(dev); 836 if (unit >= fd_cd.cd_ndevs) 837 return (ENXIO); 838 fd = fd_cd.cd_devs[unit]; 839 if (fd == 0) 840 return (ENXIO); 841 type = fd_dev_to_type(fd, dev); 842 if (type == NULL) 843 return (ENXIO); 844 845 if ((fd->sc_flags & FD_OPEN) != 0 && 846 fd->sc_type != type) 847 return (EBUSY); 848 849 fd->sc_type = type; 850 fd->sc_cylin = -1; 851 fd->sc_flags |= FD_OPEN; 852 853 /* 854 * Only update the disklabel if we're not open anywhere else. 855 */ 856 if (fd->sc_dk.dk_openmask == 0) 857 fdgetdisklabel(dev); 858 859 pmask = (1 << DISKPART(dev)); 860 861 switch (fmt) { 862 case S_IFCHR: 863 fd->sc_dk.dk_copenmask |= pmask; 864 break; 865 866 case S_IFBLK: 867 fd->sc_dk.dk_bopenmask |= pmask; 868 break; 869 } 870 fd->sc_dk.dk_openmask = 871 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 872 873 return (0); 874 } 875 876 int 877 fdclose(dev, flags, fmt, p) 878 dev_t dev; 879 int flags, fmt; 880 struct proc *p; 881 { 882 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 883 int pmask = (1 << DISKPART(dev)); 884 885 fd->sc_flags &= ~FD_OPEN; 886 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 887 888 switch (fmt) { 889 case S_IFCHR: 890 fd->sc_dk.dk_copenmask &= ~pmask; 891 break; 892 893 case S_IFBLK: 894 fd->sc_dk.dk_bopenmask &= ~pmask; 895 break; 896 } 897 fd->sc_dk.dk_openmask = 898 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 899 900 return (0); 901 } 902 903 int 904 fdread(dev, uio, flag) 905 dev_t dev; 906 struct uio *uio; 907 int flag; 908 { 909 910 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 911 } 912 913 int 914 fdwrite(dev, uio, flag) 915 dev_t dev; 916 struct uio *uio; 917 int flag; 918 { 919 920 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 921 } 922 923 void 924 fdcstart(fdc) 925 struct fdc_softc *fdc; 926 { 927 928 #ifdef DIAGNOSTIC 929 /* only got here if controller's drive queue was inactive; should 930 be in idle state */ 931 if (fdc->sc_state != DEVIDLE) { 932 printf("fdcstart: not idle\n"); 933 return; 934 } 935 #endif 936 (void) fdcstate(fdc); 937 } 938 939 void 940 fdcstatus(dv, n, s) 941 struct device *dv; 942 int n; 943 char *s; 944 { 945 struct fdc_softc *fdc = (void *)dv->dv_parent; 946 char bits[64]; 947 #if 0 948 /* 949 * A 82072 seems to return <invalid command> on 950 * gratuitous Sense Interrupt commands. 951 */ 952 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 953 out_fdc(fdc, NE7CMD_SENSEI); 954 (void) fdcresult(fdc); 955 n = 2; 956 } 957 #endif 958 959 /* Just print last status */ 960 n = fdc->sc_nstat; 961 962 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 963 964 switch (n) { 965 case 0: 966 printf("\n"); 967 break; 968 case 2: 969 printf(" (st0 %s cyl %d)\n", 970 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 971 bits, sizeof(bits)), fdc->sc_status[1]); 972 break; 973 case 7: 974 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 975 NE7_ST0BITS, bits, sizeof(bits))); 976 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 977 NE7_ST1BITS, bits, sizeof(bits))); 978 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 979 NE7_ST2BITS, bits, sizeof(bits))); 980 printf(" cyl %d head %d sec %d)\n", 981 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 982 break; 983 #ifdef DIAGNOSTIC 984 default: 985 printf(" fdcstatus: weird size: %d\n", n); 986 break; 987 #endif 988 } 989 } 990 991 void 992 fdctimeout(arg) 993 void *arg; 994 { 995 struct fdc_softc *fdc = arg; 996 struct fd_softc *fd = fdc->sc_drives.tqh_first; 997 int s; 998 999 s = splbio(); 1000 fdcstatus(&fd->sc_dv, 0, "timeout"); 1001 1002 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1003 fdc->sc_state++; 1004 else 1005 fdc->sc_state = DEVIDLE; 1006 1007 (void) fdcstate(fdc); 1008 splx(s); 1009 } 1010 1011 void 1012 fdcpseudointr(arg) 1013 void *arg; 1014 { 1015 struct fdc_softc *fdc = arg; 1016 int s; 1017 1018 /* Just ensure it has the right spl. */ 1019 s = splbio(); 1020 (void) fdcstate(fdc); 1021 splx(s); 1022 } 1023 1024 1025 /* 1026 * hardware interrupt entry point: must be converted to `fast' 1027 * (in-window) handler. 1028 */ 1029 int 1030 fdchwintr(arg) 1031 void *arg; 1032 { 1033 struct fdc_softc *fdc = arg; 1034 1035 /* 1036 * This code was reverse engineered from the SPARC bsd_fdintr.s. 1037 */ 1038 switch (fdc->sc_istate) { 1039 case ISTATE_IDLE: 1040 return (0); 1041 case ISTATE_SENSEI: 1042 out_fdc(fdc, NE7CMD_SENSEI); 1043 fdcresult(fdc); 1044 fdc->sc_istate = ISTATE_DONE; 1045 FD_SET_SWINTR(); 1046 return (1); 1047 case ISTATE_DMA: 1048 break; 1049 default: 1050 log(LOG_ERR, "fdc: stray hard interrupt.\n"); 1051 fdc->sc_fcr &= ~(FCR_DSEL(0)); /* Does this help? */ 1052 fdc->sc_istate = ISTATE_SPURIOUS; 1053 FD_SET_SWINTR(); 1054 return (1); 1055 } 1056 1057 for (;;) { 1058 int msr; 1059 1060 msr = *fdc->sc_reg_msr; 1061 1062 if ((msr & NE7_RQM) == 0) 1063 break; 1064 1065 if ((msr & NE7_NDM) == 0) { 1066 fdcresult(fdc); 1067 fdc->sc_istate = ISTATE_DONE; 1068 FD_SET_SWINTR(); 1069 log(LOG_ERR, "fdc: overrun: tc = %d\n", fdc->sc_tc); 1070 break; 1071 } 1072 1073 if (msr & NE7_DIO) { 1074 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1075 } else { 1076 *fdc->sc_reg_fifo = *fdc->sc_data++; 1077 } 1078 if (--fdc->sc_tc == 0) { 1079 fdc->sc_fcr |= FCR_TC; 1080 FCR_REG_SYNC(); 1081 fdc->sc_istate = ISTATE_DONE; 1082 delay(10); 1083 fdc->sc_fcr &= ~FCR_TC; 1084 FCR_REG_SYNC(); 1085 fdcresult(fdc); 1086 FD_SET_SWINTR(); 1087 break; 1088 } 1089 } 1090 return (1); 1091 } 1092 1093 int 1094 fdcswintr(arg) 1095 void *arg; 1096 { 1097 struct fdc_softc *fdc = arg; 1098 int s; 1099 1100 if (fdc_softpend == 0) 1101 return (0); 1102 1103 isr_soft_clear(FDC_SOFTPRI); 1104 fdc_softpend = 0; 1105 1106 if (fdc->sc_istate != ISTATE_DONE) 1107 return (0); 1108 1109 fdc->sc_istate = ISTATE_IDLE; 1110 s = splbio(); 1111 fdcstate(fdc); 1112 splx(s); 1113 return (1); 1114 } 1115 1116 int 1117 fdcstate(fdc) 1118 struct fdc_softc *fdc; 1119 { 1120 #define st0 fdc->sc_status[0] 1121 #define st1 fdc->sc_status[1] 1122 #define cyl fdc->sc_status[1] 1123 #define OUT_FDC(fdc, c, s) \ 1124 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1125 1126 struct fd_softc *fd; 1127 struct buf *bp; 1128 int read, head, sec, nblks; 1129 struct fd_type *type; 1130 struct ne7_fd_formb *finfo = NULL; 1131 1132 1133 if (fdc->sc_istate != ISTATE_IDLE) { 1134 /* Trouble... */ 1135 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1136 fdc->sc_state, fdc->sc_istate); 1137 fdc->sc_istate = ISTATE_IDLE; 1138 if (fdc->sc_state == RESETCOMPLETE || 1139 fdc->sc_state == RESETTIMEDOUT) { 1140 panic("fdcintr: spurious interrupt can't be cleared"); 1141 } 1142 goto doreset; 1143 } 1144 1145 loop: 1146 /* Is there a drive for the controller to do a transfer with? */ 1147 fd = fdc->sc_drives.tqh_first; 1148 if (fd == NULL) { 1149 fdc->sc_state = DEVIDLE; 1150 return (0); 1151 } 1152 1153 /* Is there a transfer to this drive? If not, deactivate drive. */ 1154 bp = BUFQ_PEEK(&fd->sc_q); 1155 if (bp == NULL) { 1156 fd->sc_ops = 0; 1157 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1158 fd->sc_active = 0; 1159 goto loop; 1160 } 1161 1162 if (bp->b_flags & B_FORMAT) 1163 finfo = (struct ne7_fd_formb *)bp->b_data; 1164 1165 switch (fdc->sc_state) { 1166 case DEVIDLE: 1167 fdc->sc_errors = 0; 1168 fd->sc_skip = 0; 1169 fd->sc_bcount = bp->b_bcount; 1170 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1171 callout_stop(&fd->sc_motoroff_ch); 1172 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1173 fdc->sc_state = MOTORWAIT; 1174 return (1); 1175 } 1176 if ((fd->sc_flags & FD_MOTOR) == 0) { 1177 /* Turn on the motor, being careful about pairing. */ 1178 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1179 if (ofd && ofd->sc_flags & FD_MOTOR) { 1180 callout_stop(&ofd->sc_motoroff_ch); 1181 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1182 } 1183 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1184 fd_set_motor(fdc); 1185 fdc->sc_state = MOTORWAIT; 1186 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1187 /* Allow .25s for motor to stabilize. */ 1188 callout_reset(&fd->sc_motoron_ch, hz / 4, 1189 fd_motor_on, fd); 1190 } else { 1191 fd->sc_flags &= ~FD_MOTOR_WAIT; 1192 goto loop; 1193 } 1194 return (1); 1195 } 1196 /* Make sure the right drive is selected. */ 1197 fd_set_motor(fdc); 1198 1199 /*FALLTHROUGH*/ 1200 case DOSEEK: 1201 doseek: 1202 if ((fdc->sc_flags & FDC_EIS) && 1203 (bp->b_flags & B_FORMAT) == 0) { 1204 fd->sc_cylin = bp->b_cylinder; 1205 /* We use implied seek */ 1206 goto doio; 1207 } 1208 1209 if (fd->sc_cylin == bp->b_cylinder) 1210 goto doio; 1211 1212 /* specify command */ 1213 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1214 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1215 OUT_FDC(fdc, 6|1, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1216 1217 fdc->sc_istate = ISTATE_SENSEI; 1218 /* seek function */ 1219 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1220 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1221 OUT_FDC(fdc, bp->b_cylinder * fd->sc_type->step, SEEKTIMEDOUT); 1222 1223 fd->sc_cylin = -1; 1224 fdc->sc_state = SEEKWAIT; 1225 fdc->sc_nstat = 0; 1226 1227 fd->sc_dk.dk_seek++; 1228 disk_busy(&fd->sc_dk); 1229 1230 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1231 return (1); 1232 1233 case DOIO: 1234 doio: 1235 #ifdef NOTYET 1236 /* Check to see if the disk has changed */ 1237 if (fdc->sc_reg_dir & FDI_DCHG) { 1238 /* 1239 * The disk in the drive has changed since 1240 * the last transfer. We need to see if its geometry 1241 * has changed. 1242 */ 1243 } 1244 #endif /* NOTYET */ 1245 1246 if (finfo) 1247 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1248 (char *)finfo; 1249 type = fd->sc_type; 1250 sec = fd->sc_blkno % type->seccyl; 1251 nblks = type->seccyl - sec; 1252 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1253 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1254 fd->sc_nblks = nblks; 1255 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1256 head = sec / type->sectrac; 1257 sec -= head * type->sectrac; 1258 #ifdef DIAGNOSTIC 1259 {int block; 1260 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1261 if (block != fd->sc_blkno) { 1262 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1263 #ifdef DDB 1264 Debugger(); 1265 #endif 1266 }} 1267 #endif 1268 read = bp->b_flags & B_READ; 1269 1270 /* Setup for pseudo DMA */ 1271 fdc->sc_data = bp->b_data + fd->sc_skip; 1272 fdc->sc_tc = fd->sc_nbytes; 1273 1274 *fdc->sc_reg_drs = type->rate; 1275 #ifdef FD_DEBUG 1276 if (fdc_debug > 1) 1277 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1278 read ? "read" : "write", fd->sc_drive, 1279 fd->sc_cylin, head, sec, nblks); 1280 #endif 1281 fdc->sc_state = IOCOMPLETE; 1282 fdc->sc_istate = ISTATE_DMA; 1283 fdc->sc_nstat = 0; 1284 if (finfo) { 1285 /* formatting */ 1286 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1287 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1288 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1289 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1290 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1291 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1292 } else { 1293 if (read) 1294 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1295 else 1296 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1297 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1298 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1299 OUT_FDC(fdc, head, IOTIMEDOUT); 1300 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1301 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1302 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1303 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1304 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1305 } 1306 1307 disk_busy(&fd->sc_dk); 1308 1309 /* allow 2 seconds for operation */ 1310 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1311 return (1); /* will return later */ 1312 1313 case SEEKWAIT: 1314 callout_stop(&fdc->sc_timo_ch); 1315 fdc->sc_state = SEEKCOMPLETE; 1316 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1317 /* allow 1/50 second for heads to settle */ 1318 callout_reset(&fdc->sc_intr_ch, hz / 50, 1319 fdcpseudointr, fdc); 1320 return (1); /* will return later */ 1321 } 1322 /*FALLTHROUGH*/ 1323 case SEEKCOMPLETE: 1324 /* no data on seek */ 1325 disk_unbusy(&fd->sc_dk, 0, 0); 1326 1327 /* Make sure seek really happened. */ 1328 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1329 cyl != bp->b_cylinder * fd->sc_type->step) { 1330 #ifdef FD_DEBUG 1331 if (fdc_debug) 1332 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1333 #endif 1334 fdcretry(fdc); 1335 goto loop; 1336 } 1337 fd->sc_cylin = bp->b_cylinder; 1338 goto doio; 1339 1340 case IOTIMEDOUT: 1341 fdc->sc_fcr |= FCR_TC; 1342 FCR_REG_SYNC(); 1343 delay(10); 1344 fdc->sc_fcr &= ~FCR_TC; 1345 FCR_REG_SYNC(); 1346 (void)fdcresult(fdc); 1347 /*FALLTHROUGH*/ 1348 case SEEKTIMEDOUT: 1349 case RECALTIMEDOUT: 1350 case RESETTIMEDOUT: 1351 fdcretry(fdc); 1352 goto loop; 1353 1354 case IOCOMPLETE: /* IO DONE, post-analyze */ 1355 callout_stop(&fdc->sc_timo_ch); 1356 1357 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1358 (bp->b_flags & B_READ)); 1359 1360 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1361 #ifdef FD_DEBUG 1362 if (fdc_debug) { 1363 fdcstatus(&fd->sc_dv, 7, 1364 bp->b_flags & B_READ 1365 ? "read failed" : "write failed"); 1366 printf("blkno %d nblks %d tc %d\n", 1367 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1368 } 1369 #endif 1370 if (fdc->sc_nstat == 7 && 1371 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1372 1373 /* 1374 * Silently retry overruns if no other 1375 * error bit is set. Adjust threshold. 1376 */ 1377 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1378 if (thr < 15) { 1379 thr++; 1380 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1381 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1382 #ifdef FD_DEBUG 1383 if (fdc_debug) 1384 printf("fdc: %d -> threshold\n", thr); 1385 #endif 1386 fdconf(fdc); 1387 fdc->sc_overruns = 0; 1388 } 1389 if (++fdc->sc_overruns < 3) { 1390 fdc->sc_state = DOIO; 1391 goto loop; 1392 } 1393 } 1394 fdcretry(fdc); 1395 goto loop; 1396 } 1397 if (fdc->sc_errors) { 1398 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1399 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1400 printf("\n"); 1401 fdc->sc_errors = 0; 1402 } else { 1403 if (--fdc->sc_overruns < -20) { 1404 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1405 if (thr > 0) { 1406 thr--; 1407 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1408 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1409 #ifdef FD_DEBUG 1410 if (fdc_debug) 1411 printf("fdc: %d -> threshold\n", thr); 1412 #endif 1413 fdconf(fdc); 1414 } 1415 fdc->sc_overruns = 0; 1416 } 1417 } 1418 fd->sc_blkno += fd->sc_nblks; 1419 fd->sc_skip += fd->sc_nbytes; 1420 fd->sc_bcount -= fd->sc_nbytes; 1421 if (!finfo && fd->sc_bcount > 0) { 1422 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1423 goto doseek; 1424 } 1425 fdfinish(fd, bp); 1426 goto loop; 1427 1428 case DORESET: 1429 doreset: 1430 /* try a reset, keep motor on */ 1431 fd_set_motor(fdc); 1432 delay(100); 1433 fdc_reset(fdc); 1434 fdc->sc_nstat = 0; 1435 fdc->sc_istate = ISTATE_SENSEI; 1436 fdc->sc_state = RESETCOMPLETE; 1437 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1438 return (1); /* will return later */ 1439 1440 case RESETCOMPLETE: 1441 callout_stop(&fdc->sc_timo_ch); 1442 fdconf(fdc); 1443 1444 /* fall through */ 1445 case DORECAL: 1446 fdc->sc_state = RECALWAIT; 1447 fdc->sc_istate = ISTATE_SENSEI; 1448 fdc->sc_nstat = 0; 1449 /* recalibrate function */ 1450 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1451 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1452 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1453 return (1); /* will return later */ 1454 1455 case RECALWAIT: 1456 callout_stop(&fdc->sc_timo_ch); 1457 fdc->sc_state = RECALCOMPLETE; 1458 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1459 /* allow 1/30 second for heads to settle */ 1460 callout_reset(&fdc->sc_intr_ch, hz / 30, 1461 fdcpseudointr, fdc); 1462 return (1); /* will return later */ 1463 } 1464 1465 case RECALCOMPLETE: 1466 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1467 #ifdef FD_DEBUG 1468 if (fdc_debug) 1469 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1470 #endif 1471 fdcretry(fdc); 1472 goto loop; 1473 } 1474 fd->sc_cylin = 0; 1475 goto doseek; 1476 1477 case MOTORWAIT: 1478 if (fd->sc_flags & FD_MOTOR_WAIT) 1479 return (1); /* time's not up yet */ 1480 goto doseek; 1481 1482 default: 1483 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1484 return (1); 1485 } 1486 #ifdef DIAGNOSTIC 1487 panic("fdcintr: impossible"); 1488 #endif 1489 #undef st0 1490 #undef st1 1491 #undef cyl 1492 } 1493 1494 void 1495 fdcretry(fdc) 1496 struct fdc_softc *fdc; 1497 { 1498 char bits[64]; 1499 struct fd_softc *fd; 1500 struct buf *bp; 1501 1502 fd = fdc->sc_drives.tqh_first; 1503 bp = BUFQ_PEEK(&fd->sc_q); 1504 1505 fdc->sc_overruns = 0; 1506 if (fd->sc_opts & FDOPT_NORETRY) 1507 goto fail; 1508 1509 switch (fdc->sc_errors) { 1510 case 0: 1511 /* try again */ 1512 fdc->sc_state = 1513 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1514 break; 1515 1516 case 1: case 2: case 3: 1517 /* didn't work; try recalibrating */ 1518 fdc->sc_state = DORECAL; 1519 break; 1520 1521 case 4: 1522 /* still no go; reset the bastard */ 1523 fdc->sc_state = DORESET; 1524 break; 1525 1526 default: 1527 fail: 1528 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1529 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1530 fd->sc_skip / FDC_BSIZE, 1531 (struct disklabel *)NULL); 1532 1533 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1534 NE7_ST0BITS, bits, sizeof(bits))); 1535 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1536 NE7_ST1BITS, bits, sizeof(bits))); 1537 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1538 NE7_ST2BITS, bits, sizeof(bits))); 1539 printf(" cyl %d head %d sec %d)\n", 1540 fdc->sc_status[3], fdc->sc_status[4], 1541 fdc->sc_status[5]); 1542 } 1543 1544 bp->b_flags |= B_ERROR; 1545 bp->b_error = EIO; 1546 fdfinish(fd, bp); 1547 } 1548 fdc->sc_errors++; 1549 } 1550 1551 int 1552 fdioctl(dev, cmd, addr, flag, p) 1553 dev_t dev; 1554 u_long cmd; 1555 caddr_t addr; 1556 int flag; 1557 struct proc *p; 1558 { 1559 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1560 struct fdformat_parms *form_parms; 1561 struct fdformat_cmd *form_cmd; 1562 struct ne7_fd_formb *fd_formb; 1563 int il[FD_MAX_NSEC + 1]; 1564 int i, j; 1565 int error; 1566 1567 switch (cmd) { 1568 case DIOCGDINFO: 1569 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1570 return 0; 1571 1572 case DIOCWLABEL: 1573 if ((flag & FWRITE) == 0) 1574 return EBADF; 1575 /* XXX do something */ 1576 return (0); 1577 1578 case DIOCWDINFO: 1579 if ((flag & FWRITE) == 0) 1580 return (EBADF); 1581 1582 error = setdisklabel(fd->sc_dk.dk_label, 1583 (struct disklabel *)addr, 0, 1584 fd->sc_dk.dk_cpulabel); 1585 if (error) 1586 return (error); 1587 1588 error = writedisklabel(dev, fdstrategy, 1589 fd->sc_dk.dk_label, 1590 fd->sc_dk.dk_cpulabel); 1591 return (error); 1592 1593 case DIOCLOCK: 1594 /* 1595 * Nothing to do here, really. 1596 */ 1597 return (0); 1598 1599 case DIOCEJECT: 1600 if (*(int *)addr == 0) { 1601 int part = DISKPART(dev); 1602 /* 1603 * Don't force eject: check that we are the only 1604 * partition open. If so, unlock it. 1605 */ 1606 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1607 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1608 fd->sc_dk.dk_openmask) { 1609 return (EBUSY); 1610 } 1611 } 1612 /* FALLTHROUGH */ 1613 case ODIOCEJECT: 1614 fd_do_eject((void *)fd->sc_dv.dv_parent, fd->sc_drive); 1615 return (0); 1616 1617 case FDIOCGETFORMAT: 1618 form_parms = (struct fdformat_parms *)addr; 1619 form_parms->fdformat_version = FDFORMAT_VERSION; 1620 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1621 form_parms->ncyl = fd->sc_type->tracks; 1622 form_parms->nspt = fd->sc_type->sectrac; 1623 form_parms->ntrk = fd->sc_type->heads; 1624 form_parms->stepspercyl = fd->sc_type->step; 1625 form_parms->gaplen = fd->sc_type->gap2; 1626 form_parms->fillbyte = fd->sc_type->fillbyte; 1627 form_parms->interleave = fd->sc_type->interleave; 1628 switch (fd->sc_type->rate) { 1629 case FDC_500KBPS: 1630 form_parms->xfer_rate = 500 * 1024; 1631 break; 1632 case FDC_300KBPS: 1633 form_parms->xfer_rate = 300 * 1024; 1634 break; 1635 case FDC_250KBPS: 1636 form_parms->xfer_rate = 250 * 1024; 1637 break; 1638 default: 1639 return (EINVAL); 1640 } 1641 return (0); 1642 1643 case FDIOCSETFORMAT: 1644 if ((flag & FWRITE) == 0) 1645 return (EBADF); /* must be opened for writing */ 1646 1647 form_parms = (struct fdformat_parms *)addr; 1648 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1649 return (EINVAL);/* wrong version of formatting prog */ 1650 1651 i = form_parms->nbps >> 7; 1652 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1653 i & ~(1 << (ffs(i)-1))) 1654 /* not a power-of-two multiple of 128 */ 1655 return (EINVAL); 1656 1657 switch (form_parms->xfer_rate) { 1658 case 500 * 1024: 1659 fd->sc_type->rate = FDC_500KBPS; 1660 break; 1661 case 300 * 1024: 1662 fd->sc_type->rate = FDC_300KBPS; 1663 break; 1664 case 250 * 1024: 1665 fd->sc_type->rate = FDC_250KBPS; 1666 break; 1667 default: 1668 return (EINVAL); 1669 } 1670 1671 if (form_parms->nspt > FD_MAX_NSEC || 1672 form_parms->fillbyte > 0xff || 1673 form_parms->interleave > 0xff) 1674 return EINVAL; 1675 fd->sc_type->sectrac = form_parms->nspt; 1676 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1677 return EINVAL; 1678 fd->sc_type->heads = form_parms->ntrk; 1679 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1680 fd->sc_type->secsize = ffs(i)-1; 1681 fd->sc_type->gap2 = form_parms->gaplen; 1682 fd->sc_type->tracks = form_parms->ncyl; 1683 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1684 form_parms->nbps / DEV_BSIZE; 1685 fd->sc_type->step = form_parms->stepspercyl; 1686 fd->sc_type->fillbyte = form_parms->fillbyte; 1687 fd->sc_type->interleave = form_parms->interleave; 1688 return (0); 1689 1690 case FDIOCFORMAT_TRACK: 1691 if((flag & FWRITE) == 0) 1692 /* must be opened for writing */ 1693 return (EBADF); 1694 form_cmd = (struct fdformat_cmd *)addr; 1695 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1696 /* wrong version of formatting prog */ 1697 return (EINVAL); 1698 1699 if (form_cmd->head >= fd->sc_type->heads || 1700 form_cmd->cylinder >= fd->sc_type->tracks) { 1701 return (EINVAL); 1702 } 1703 1704 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1705 M_TEMP, M_NOWAIT); 1706 if (fd_formb == 0) 1707 return (ENOMEM); 1708 1709 fd_formb->head = form_cmd->head; 1710 fd_formb->cyl = form_cmd->cylinder; 1711 fd_formb->transfer_rate = fd->sc_type->rate; 1712 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1713 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1714 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1715 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1716 1717 memset(il, 0, sizeof(il)); 1718 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1719 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 1720 j++; 1721 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 1722 j += fd->sc_type->interleave; 1723 } 1724 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1725 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1726 fd_formb->fd_formb_headno(i) = form_cmd->head; 1727 fd_formb->fd_formb_secno(i) = il[i+1]; 1728 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1729 } 1730 1731 error = fdformat(dev, fd_formb, p); 1732 free(fd_formb, M_TEMP); 1733 return (error); 1734 1735 case FDIOCGETOPTS: /* get drive options */ 1736 *(int *)addr = fd->sc_opts; 1737 return (0); 1738 1739 case FDIOCSETOPTS: /* set drive options */ 1740 fd->sc_opts = *(int *)addr; 1741 return (0); 1742 1743 #ifdef DEBUG 1744 case _IO('f', 100): 1745 { 1746 int i; 1747 struct fdc_softc *fdc = (struct fdc_softc *) 1748 fd->sc_dv.dv_parent; 1749 1750 out_fdc(fdc, NE7CMD_DUMPREG); 1751 fdcresult(fdc); 1752 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1753 for (i = 0; i < fdc->sc_nstat; i++) 1754 printf(" %x", fdc->sc_status[i]); 1755 printf(">\n"); 1756 } 1757 1758 return (0); 1759 case _IOW('f', 101, int): 1760 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1761 ~CFG_THRHLD_MASK; 1762 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1763 (*(int *)addr & CFG_THRHLD_MASK); 1764 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1765 return (0); 1766 case _IO('f', 102): 1767 { 1768 int i; 1769 struct fdc_softc *fdc = (struct fdc_softc *) 1770 fd->sc_dv.dv_parent; 1771 out_fdc(fdc, NE7CMD_SENSEI); 1772 fdcresult(fdc); 1773 printf("sensei(%d regs): <", fdc->sc_nstat); 1774 for (i=0; i< fdc->sc_nstat; i++) 1775 printf(" 0x%x", fdc->sc_status[i]); 1776 } 1777 printf(">\n"); 1778 return (0); 1779 #endif 1780 default: 1781 return (ENOTTY); 1782 } 1783 1784 #ifdef DIAGNOSTIC 1785 panic("fdioctl: impossible"); 1786 #endif 1787 } 1788 1789 int 1790 fdformat(dev, finfo, p) 1791 dev_t dev; 1792 struct ne7_fd_formb *finfo; 1793 struct proc *p; 1794 { 1795 int rv = 0, s; 1796 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1797 struct fd_type *type = fd->sc_type; 1798 struct buf *bp; 1799 1800 /* set up a buffer header for fdstrategy() */ 1801 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1802 if (bp == 0) 1803 return (ENOBUFS); 1804 1805 memset((void *)bp, 0, sizeof(struct buf)); 1806 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1807 bp->b_proc = p; 1808 bp->b_dev = dev; 1809 1810 /* 1811 * Calculate a fake blkno, so fdstrategy() would initiate a 1812 * seek to the requested cylinder. 1813 */ 1814 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1815 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1816 1817 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1818 bp->b_data = (caddr_t)finfo; 1819 1820 #ifdef FD_DEBUG 1821 if (fdc_debug) 1822 printf("fdformat: blkno %x count %ld\n", 1823 bp->b_blkno, bp->b_bcount); 1824 #endif 1825 1826 /* now do the format */ 1827 fdstrategy(bp); 1828 1829 /* ...and wait for it to complete */ 1830 s = splbio(); 1831 while (!(bp->b_flags & B_DONE)) { 1832 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1833 if (rv == EWOULDBLOCK) 1834 break; 1835 } 1836 splx(s); 1837 1838 if (rv == EWOULDBLOCK) { 1839 /* timed out */ 1840 rv = EIO; 1841 biodone(bp); 1842 } 1843 if (bp->b_flags & B_ERROR) { 1844 rv = bp->b_error; 1845 } 1846 free(bp, M_TEMP); 1847 return (rv); 1848 } 1849 1850 void 1851 fdgetdisklabel(dev) 1852 dev_t dev; 1853 { 1854 int unit = FDUNIT(dev), i; 1855 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1856 struct disklabel *lp = fd->sc_dk.dk_label; 1857 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1858 1859 memset(lp, 0, sizeof(struct disklabel)); 1860 memset(lp, 0, sizeof(struct cpu_disklabel)); 1861 1862 lp->d_type = DTYPE_FLOPPY; 1863 lp->d_secsize = FDC_BSIZE; 1864 lp->d_secpercyl = fd->sc_type->seccyl; 1865 lp->d_nsectors = fd->sc_type->sectrac; 1866 lp->d_ncylinders = fd->sc_type->tracks; 1867 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1868 lp->d_rpm = 3600; /* XXX like it matters... */ 1869 1870 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1871 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1872 lp->d_interleave = 1; 1873 1874 lp->d_partitions[RAW_PART].p_offset = 0; 1875 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1876 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1877 lp->d_npartitions = RAW_PART + 1; 1878 1879 lp->d_magic = DISKMAGIC; 1880 lp->d_magic2 = DISKMAGIC; 1881 lp->d_checksum = dkcksum(lp); 1882 1883 /* 1884 * Call the generic disklabel extraction routine. If there's 1885 * not a label there, fake it. 1886 */ 1887 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1888 strncpy(lp->d_packname, "default label", 1889 sizeof(lp->d_packname)); 1890 /* 1891 * Reset the partition info; it might have gotten 1892 * trashed in readdisklabel(). 1893 * 1894 * XXX Why do we have to do this? readdisklabel() 1895 * should be safe... 1896 */ 1897 for (i = 0; i < MAXPARTITIONS; ++i) { 1898 lp->d_partitions[i].p_offset = 0; 1899 if (i == RAW_PART) { 1900 lp->d_partitions[i].p_size = 1901 lp->d_secpercyl * lp->d_ncylinders; 1902 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1903 } else { 1904 lp->d_partitions[i].p_size = 0; 1905 lp->d_partitions[i].p_fstype = FS_UNUSED; 1906 } 1907 } 1908 lp->d_npartitions = RAW_PART + 1; 1909 } 1910 } 1911 1912 void 1913 fd_do_eject(fdc, unit) 1914 struct fdc_softc *fdc; 1915 int unit; 1916 { 1917 fdc->sc_fcr |= FCR_DSEL(unit)|FCR_EJECT; 1918 FCR_REG_SYNC(); 1919 delay(10); 1920 fdc->sc_fcr &= ~(FCR_DSEL(unit)|FCR_EJECT); 1921 FCR_REG_SYNC(); 1922 } 1923 1924 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1925 int fd_read_md_image __P((size_t *, caddr_t *)); 1926 #endif 1927 1928 /* ARGSUSED */ 1929 void 1930 fd_mountroot_hook(dev) 1931 struct device *dev; 1932 { 1933 int c; 1934 1935 fd_do_eject(fdc_cd.cd_devs[0], 0); /* XXX - doesn't check ``dev'' */ 1936 printf("Insert filesystem floppy and press return."); 1937 for (;;) { 1938 c = cngetc(); 1939 if ((c == '\r') || (c == '\n')) { 1940 printf("\n"); 1941 break; 1942 } 1943 } 1944 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1945 { 1946 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1947 md_read_image = fd_read_md_image; 1948 } 1949 #endif 1950 } 1951 1952 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1953 1954 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 1955 1956 int 1957 fd_read_md_image(sizep, addrp) 1958 size_t *sizep; 1959 caddr_t *addrp; 1960 { 1961 struct buf buf, *bp = &buf; 1962 dev_t dev; 1963 off_t offset; 1964 caddr_t addr; 1965 1966 dev = makedev(54,0); /* XXX */ 1967 1968 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 1969 *addrp = addr; 1970 1971 if (fdopen(dev, 0, S_IFCHR, NULL)) 1972 panic("fd: mountroot: fdopen"); 1973 1974 offset = 0; 1975 1976 for (;;) { 1977 bp->b_dev = dev; 1978 bp->b_error = 0; 1979 bp->b_resid = 0; 1980 bp->b_proc = NULL; 1981 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 1982 bp->b_blkno = btodb(offset); 1983 bp->b_bcount = DEV_BSIZE; 1984 bp->b_data = addr; 1985 fdstrategy(bp); 1986 while ((bp->b_flags & B_DONE) == 0) { 1987 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 1988 } 1989 if (bp->b_error) 1990 panic("fd: mountroot: fdread error %d", bp->b_error); 1991 1992 if (bp->b_resid != 0) 1993 break; 1994 1995 addr += DEV_BSIZE; 1996 offset += DEV_BSIZE; 1997 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 1998 break; 1999 } 2000 (void)fdclose(dev, 0, S_IFCHR, NULL); 2001 *sizep = offset; 2002 fd_do_eject(fdc_cd.cd_devs[0], FDUNIT(dev)); /* XXX */ 2003 return (0); 2004 } 2005 #endif 2006