1 /* $NetBSD: fd.c,v 1.28 2002/09/06 13:18:43 gehenna 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 struct cfattach fdc_ca = { 154 sizeof(struct fdc_softc), fdcmatch, fdcattach 155 }; 156 157 extern struct cfdriver fdc_cd; 158 159 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 160 161 /* 162 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 163 * we tell them apart. 164 */ 165 struct fd_type { 166 int sectrac; /* sectors per track */ 167 int heads; /* number of heads */ 168 int seccyl; /* sectors per cylinder */ 169 int secsize; /* size code for sectors */ 170 int datalen; /* data len when secsize = 0 */ 171 int steprate; /* step rate and head unload time */ 172 int gap1; /* gap len between sectors */ 173 int gap2; /* formatting gap */ 174 int tracks; /* total num of tracks */ 175 int size; /* size of disk in sectors */ 176 int step; /* steps per cylinder */ 177 int rate; /* transfer speed code */ 178 int fillbyte; /* format fill byte */ 179 int interleave; /* interleave factor (formatting) */ 180 char *name; 181 }; 182 183 /* The order of entries in the following table is important -- BEWARE! */ 184 struct fd_type fd_types[] = { 185 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 186 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 187 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 188 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 189 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 190 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 191 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 192 }; 193 194 /* software state, per disk (with up to 4 disks per ctlr) */ 195 struct fd_softc { 196 struct device sc_dv; /* generic device info */ 197 struct disk sc_dk; /* generic disk info */ 198 199 struct fd_type *sc_deftype; /* default type descriptor */ 200 struct fd_type *sc_type; /* current type descriptor */ 201 202 struct callout sc_motoron_ch; 203 struct callout sc_motoroff_ch; 204 205 daddr_t sc_blkno; /* starting block number */ 206 int sc_bcount; /* byte count left */ 207 int sc_skip; /* bytes already transferred */ 208 int sc_nblks; /* number of blocks currently transferring */ 209 int sc_nbytes; /* number of bytes currently transferring */ 210 211 int sc_drive; /* physical unit number */ 212 int sc_flags; 213 #define FD_OPEN 0x01 /* it's open */ 214 #define FD_MOTOR 0x02 /* motor should be on */ 215 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 216 int sc_cylin; /* where we think the head is */ 217 int sc_opts; /* user-set options */ 218 219 void *sc_sdhook; /* shutdownhook cookie */ 220 221 TAILQ_ENTRY(fd_softc) sc_drivechain; 222 int sc_ops; /* I/O ops since last switch */ 223 struct bufq_state sc_q; /* pending I/O requests */ 224 int sc_active; /* number of active I/O operations */ 225 }; 226 227 /* floppy driver configuration */ 228 int fdmatch __P((struct device *, struct cfdata *, void *)); 229 void fdattach __P((struct device *, struct device *, void *)); 230 231 struct cfattach fd_ca = { 232 sizeof(struct fd_softc), fdmatch, fdattach 233 }; 234 235 extern struct cfdriver fd_cd; 236 237 dev_type_open(fdopen); 238 dev_type_close(fdclose); 239 dev_type_read(fdread); 240 dev_type_write(fdwrite); 241 dev_type_ioctl(fdioctl); 242 dev_type_strategy(fdstrategy); 243 244 const struct bdevsw fd_bdevsw = { 245 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 246 }; 247 248 const struct cdevsw fd_cdevsw = { 249 fdopen, fdclose, fdread, fdwrite, fdioctl, 250 nostop, notty, nopoll, nommap, D_DISK 251 }; 252 253 void fdgetdisklabel __P((dev_t)); 254 int fd_get_parms __P((struct fd_softc *)); 255 void fdstart __P((struct fd_softc *)); 256 int fdprint __P((void *, const char *)); 257 258 struct dkdriver fddkdriver = { fdstrategy }; 259 260 struct fd_type *fd_nvtotype __P((char *, int, int)); 261 void fd_set_motor __P((struct fdc_softc *fdc)); 262 void fd_motor_off __P((void *arg)); 263 void fd_motor_on __P((void *arg)); 264 int fdcresult __P((struct fdc_softc *fdc)); 265 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 266 void fdcstart __P((struct fdc_softc *fdc)); 267 void fdcstatus __P((struct device *dv, int n, char *s)); 268 void fdc_reset __P((struct fdc_softc *fdc)); 269 void fdctimeout __P((void *arg)); 270 void fdcpseudointr __P((void *arg)); 271 int fdchwintr __P((void *)); 272 int fdcswintr __P((void *)); 273 int fdcstate __P((struct fdc_softc *)); 274 void fdcretry __P((struct fdc_softc *fdc)); 275 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 276 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 277 void fd_do_eject __P((struct fdc_softc *, int)); 278 void fd_mountroot_hook __P((struct device *)); 279 static void fdconf __P((struct fdc_softc *)); 280 281 static int fdc_softpend = 0; 282 #ifndef FDC_SOFTPRI 283 #define FDC_SOFTPRI 2 284 #endif 285 #define FD_SET_SWINTR() { fdc_softpend = 1; isr_soft_request(FDC_SOFTPRI); } 286 287 /* 288 * The Floppy Control Register on the sun3x, not to be confused with the 289 * Floppy ControllER Registers that this driver mostly insterfaces with, 290 * controls some of the auxillary functions of the floppy drive. These 291 * include asserting the floppy eject and terminal data count (or TC) pins 292 * of the floppy drive and controller chip respectively. 293 * 294 * Often it is necessary to toggle individual bits within this register 295 * while keeping the others untouched. However, the register does not 296 * present its latched data to the processor when read. This prevents the 297 * use of a read-modify-write cycle that would normally be used to modify 298 * individual bits. To get around this we must keep a copy of register's 299 * current value and always insure that when we wish to modify the register, 300 * we actually modify the copy and synchronize the register to it. 301 */ 302 #define FCR_REG_SYNC() (*fdc->sc_reg_fcr = fdc->sc_fcr) 303 304 int 305 fdcmatch(parent, match, aux) 306 struct device *parent; 307 struct cfdata *match; 308 void *aux; 309 { 310 struct confargs *ca = aux; 311 312 if (bus_peek(ca->ca_bustype, ca->ca_paddr, sizeof(u_char)) == -1) 313 return (0); 314 315 return (1); 316 } 317 318 /* 319 * Arguments passed between fdcattach and fdprobe. 320 */ 321 struct fdc_attach_args { 322 int fa_drive; 323 struct bootpath *fa_bootpath; 324 struct fd_type *fa_deftype; 325 }; 326 327 /* 328 * Print the location of a disk drive (called just before attaching the 329 * the drive). If `fdc' is not NULL, the drive was found but was not 330 * in the system config file; print the drive name as well. 331 * Return QUIET (config_find ignores this if the device was configured) to 332 * avoid printing `fdN not configured' messages. 333 */ 334 int 335 fdprint(aux, fdc) 336 void *aux; 337 const char *fdc; 338 { 339 struct fdc_attach_args *fa = aux; 340 341 if (!fdc) 342 printf(" drive %d", fa->fa_drive); 343 return (QUIET); 344 } 345 346 static void 347 fdconf(fdc) 348 struct fdc_softc *fdc; 349 { 350 int vroom; 351 352 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 353 return; 354 355 /* 356 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 357 * the PROM thinks is appropriate. 358 */ 359 if ((vroom = fdc->sc_status[7]) == 0) 360 vroom = 0x64; 361 362 /* Configure controller to use FIFO and Implied Seek */ 363 out_fdc(fdc, NE7CMD_CFG); 364 out_fdc(fdc, vroom); 365 out_fdc(fdc, fdc->sc_cfg); 366 out_fdc(fdc, 0); /* PRETRK */ 367 /* No result phase */ 368 } 369 370 void 371 fdcattach(parent, self, aux) 372 struct device *parent, *self; 373 void *aux; 374 { 375 struct confargs *ca = aux; 376 struct fdc_softc *fdc = (void *)self; 377 struct fdc_attach_args fa; 378 int pri, vec; 379 char code; 380 381 fdc->sc_reg = (caddr_t)bus_mapin(ca->ca_bustype, ca->ca_paddr, 382 sizeof(union fdreg)); 383 384 callout_init(&fdc->sc_timo_ch); 385 callout_init(&fdc->sc_intr_ch); 386 387 fdc->sc_state = DEVIDLE; 388 fdc->sc_istate = ISTATE_IDLE; 389 fdc->sc_flags |= FDC_EIS; 390 TAILQ_INIT(&fdc->sc_drives); 391 392 /* Assume a 82072 */ 393 code = '2'; 394 395 if (code == '7') { 396 panic("no 82077 fdc in this kernel"); 397 /* NOTREACHED */ 398 } else { 399 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 400 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 401 402 fdc->sc_reg_fcr = ((volatile u_int8_t *) fdc->sc_reg) 403 + FDC_FCR_OFFSET; 404 fdc->sc_reg_fvr = ((volatile u_int8_t *) fdc->sc_reg) 405 + FDC_FVR_OFFSET; 406 } 407 408 isr_add_autovect(fdcswintr, fdc, FDC_SOFTPRI); 409 pri = ca->ca_intpri; 410 vec = ca->ca_intvec; 411 if (vec == -1) { 412 /* Tell the FDC to fake an autovector. */ 413 vec = 0x18 + pri; /* XXX */ 414 isr_add_autovect(fdchwintr, fdc, pri); 415 } else { 416 /* An OBIO bus with vectors? Weird exception. */ 417 isr_add_vectored(fdchwintr, fdc, pri, vec); 418 } 419 *fdc->sc_reg_fvr = vec; /* Program controller w/ interrupt vector */ 420 421 printf(": (softpri %d) chip 8207%c\n", FDC_SOFTPRI, code); 422 423 #ifdef FD_DEBUG 424 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 425 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 426 if (fdc_debug) 427 printf("[version cmd]"); 428 } 429 #endif 430 431 fdc_reset(fdc); 432 /* 433 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 434 * Note: CFG_EFIFO is active-low, initial threshold value: 8 435 */ 436 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 437 fdconf(fdc); 438 439 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 440 fdc->sc_dev.dv_xname, "intr"); 441 442 /* physical limit: four drives per controller. */ 443 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 444 fa.fa_deftype = NULL; /* unknown */ 445 fa.fa_deftype = &fd_types[0]; /* XXX */ 446 (void)config_found(self, (void *)&fa, fdprint); 447 } 448 } 449 450 int 451 fdmatch(parent, match, aux) 452 struct device *parent; 453 struct cfdata *match; 454 void *aux; 455 { 456 struct fdc_softc *fdc = (void *)parent; 457 struct fdc_attach_args *fa = aux; 458 int drive = fa->fa_drive; 459 int n, ok; 460 461 if (drive > 0) 462 /* XXX - for now, punt > 1 drives */ 463 return (0); 464 465 /* select drive and turn on motor */ 466 fdc->sc_fcr |= FCR_DSEL(drive) | FCR_MTRON; 467 FCR_REG_SYNC(); 468 /* wait for motor to spin up */ 469 delay(250000); 470 471 fdc->sc_nstat = 0; 472 out_fdc(fdc, NE7CMD_RECAL); 473 out_fdc(fdc, drive); 474 /* wait for recalibrate */ 475 for (n = 0; n < 10000; n++) { 476 delay(1000); 477 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 478 /* wait a bit longer till device *really* is ready */ 479 delay(100000); 480 if (out_fdc(fdc, NE7CMD_SENSEI)) 481 break; 482 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 483 /* 484 * Got `invalid command'; we interpret it 485 * to mean that the re-calibrate hasn't in 486 * fact finished yet 487 */ 488 continue; 489 break; 490 } 491 } 492 n = fdc->sc_nstat; 493 #ifdef FD_DEBUG 494 if (fdc_debug) { 495 int i; 496 printf("fdprobe: %d stati:", n); 497 for (i = 0; i < n; i++) 498 printf(" %x", fdc->sc_status[i]); 499 printf("\n"); 500 } 501 #endif 502 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 503 504 /* turn off motor */ 505 fdc->sc_fcr &= ~(FCR_DSEL(drive)|FCR_MTRON); 506 FCR_REG_SYNC(); 507 508 return (ok); 509 } 510 511 /* 512 * Controller is working, and drive responded. Attach it. 513 */ 514 void 515 fdattach(parent, self, aux) 516 struct device *parent, *self; 517 void *aux; 518 { 519 struct fdc_softc *fdc = (void *)parent; 520 struct fd_softc *fd = (void *)self; 521 struct fdc_attach_args *fa = aux; 522 struct fd_type *type = fa->fa_deftype; 523 int drive = fa->fa_drive; 524 525 callout_init(&fd->sc_motoron_ch); 526 callout_init(&fd->sc_motoroff_ch); 527 528 /* XXX Allow `flags' to override device type? */ 529 530 if (type) 531 printf(": %s %d cyl, %d head, %d sec\n", type->name, 532 type->tracks, type->heads, type->sectrac); 533 else 534 printf(": density unknown\n"); 535 536 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 537 fd->sc_cylin = -1; 538 fd->sc_drive = drive; 539 fd->sc_deftype = type; 540 fdc->sc_fd[drive] = fd; 541 542 /* 543 * Initialize and attach the disk structure. 544 */ 545 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 546 fd->sc_dk.dk_driver = &fddkdriver; 547 disk_attach(&fd->sc_dk); 548 549 #ifdef sparc 550 /* 551 * We're told if we're the boot device in fdcattach(). 552 */ 553 if (fa->fa_bootpath) 554 fa->fa_bootpath->dev = &fd->sc_dv; 555 #endif 556 #define OUT_FDC(sc, c) { \ 557 if (out_fdc((sc), (c))) \ 558 printf("fdc: specify command failed.\n");\ 559 } 560 /* specify command */ 561 OUT_FDC(fdc, NE7CMD_SPECIFY); 562 OUT_FDC(fdc, type->steprate); 563 /* 564 * The '|1' in the following statement turns on the 'Non-DMA' bit 565 * specifier in the last byte of the SPECIFY command as described in the 566 * datasheet I have. This is necessary for the driver to work on the 567 * sun3x, because the system will not respond to the chip's requests 568 * for DMA; there is no hardware on the motherboard to support it. 569 * By enabling this bit, we will force the chip to interrupt when its 570 * FIFO is full, at which point the interrupt handler will empty it and 571 * continue. This is ``pseudo-DMA''. 572 * -J 573 */ 574 OUT_FDC(fdc, 6|1); /* XXX head load time == 6ms */ 575 #undef OUT_FDC 576 577 /* 578 * Establish a mountroot_hook anyway in case we booted 579 * with RB_ASKNAME and get selected as the boot device. 580 */ 581 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 582 583 /* Make sure the drive motor gets turned off at shutdown time. */ 584 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 585 } 586 587 __inline struct fd_type * 588 fd_dev_to_type(fd, dev) 589 struct fd_softc *fd; 590 dev_t dev; 591 { 592 int type = FDTYPE(dev); 593 594 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 595 return (NULL); 596 return (type ? &fd_types[type - 1] : fd->sc_deftype); 597 } 598 599 void 600 fdstrategy(bp) 601 struct buf *bp; /* IO operation to perform */ 602 { 603 struct fd_softc *fd; 604 int unit = FDUNIT(bp->b_dev); 605 int sz; 606 int s; 607 608 /* Valid unit, controller, and request? */ 609 if (unit >= fd_cd.cd_ndevs || 610 (fd = fd_cd.cd_devs[unit]) == 0 || 611 bp->b_blkno < 0 || 612 ((bp->b_bcount % FDC_BSIZE) != 0 && 613 (bp->b_flags & B_FORMAT) == 0)) { 614 bp->b_error = EINVAL; 615 goto bad; 616 } 617 618 /* If it's a null transfer, return immediately. */ 619 if (bp->b_bcount == 0) 620 goto done; 621 622 sz = howmany(bp->b_bcount, FDC_BSIZE); 623 624 if (bp->b_blkno + sz > fd->sc_type->size) { 625 sz = fd->sc_type->size - bp->b_blkno; 626 if (sz == 0) { 627 /* If exactly at end of disk, return EOF. */ 628 bp->b_resid = bp->b_bcount; 629 goto done; 630 } 631 if (sz < 0) { 632 /* If past end of disk, return EINVAL. */ 633 bp->b_error = EINVAL; 634 goto bad; 635 } 636 /* Otherwise, truncate request. */ 637 bp->b_bcount = sz << DEV_BSHIFT; 638 } 639 640 bp->b_rawblkno = bp->b_blkno; 641 bp->b_cylinder = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 642 643 #ifdef FD_DEBUG 644 if (fdc_debug > 1) 645 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 646 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 647 #endif 648 649 /* Queue transfer on drive, activate drive and controller if idle. */ 650 s = splbio(); 651 BUFQ_PUT(&fd->sc_q, bp); 652 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 653 if (fd->sc_active == 0) 654 fdstart(fd); 655 #ifdef DIAGNOSTIC 656 else { 657 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 658 if (fdc->sc_state == DEVIDLE) { 659 printf("fdstrategy: controller inactive\n"); 660 fdcstart(fdc); 661 } 662 } 663 #endif 664 splx(s); 665 return; 666 667 bad: 668 bp->b_flags |= B_ERROR; 669 done: 670 /* Toss transfer; we're done early. */ 671 biodone(bp); 672 } 673 674 void 675 fdstart(fd) 676 struct fd_softc *fd; 677 { 678 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 679 int active = fdc->sc_drives.tqh_first != 0; 680 681 /* Link into controller queue. */ 682 fd->sc_active = 1; 683 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 684 685 /* If controller not already active, start it. */ 686 if (!active) 687 fdcstart(fdc); 688 } 689 690 void 691 fdfinish(fd, bp) 692 struct fd_softc *fd; 693 struct buf *bp; 694 { 695 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 696 697 /* 698 * Move this drive to the end of the queue to give others a `fair' 699 * chance. We only force a switch if N operations are completed while 700 * another drive is waiting to be serviced, since there is a long motor 701 * startup delay whenever we switch. 702 */ 703 (void)BUFQ_GET(&fd->sc_q); 704 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 705 fd->sc_ops = 0; 706 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 707 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 708 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 709 } else 710 fd->sc_active = 0; 711 } 712 bp->b_resid = fd->sc_bcount; 713 fd->sc_skip = 0; 714 715 biodone(bp); 716 /* turn off motor 5s from now */ 717 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 718 fdc->sc_state = DEVIDLE; 719 } 720 721 void 722 fdc_reset(fdc) 723 struct fdc_softc *fdc; 724 { 725 fdc->sc_fcr = 0; 726 FCR_REG_SYNC(); 727 728 *fdc->sc_reg_drs = DRS_RESET; 729 delay(10); 730 *fdc->sc_reg_drs = 0; 731 732 #ifdef FD_DEBUG 733 if (fdc_debug) 734 printf("fdc reset\n"); 735 #endif 736 } 737 738 void 739 fd_set_motor(fdc) 740 struct fdc_softc *fdc; 741 { 742 struct fd_softc *fd; 743 int n; 744 745 int on = 0; 746 747 for (n = 0; n < 4; n++) 748 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 749 on = 1; 750 if (on) { 751 fdc->sc_fcr |= FCR_DSEL(0)|FCR_MTRON; /* XXX */ 752 } else { 753 fdc->sc_fcr &= ~(FCR_DSEL(0)|FCR_MTRON); /* XXX */ 754 } 755 FCR_REG_SYNC(); 756 } 757 758 void 759 fd_motor_off(arg) 760 void *arg; 761 { 762 struct fd_softc *fd = arg; 763 int s; 764 765 s = splbio(); 766 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 767 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 768 splx(s); 769 } 770 771 void 772 fd_motor_on(arg) 773 void *arg; 774 { 775 struct fd_softc *fd = arg; 776 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 777 int s; 778 779 s = splbio(); 780 fd->sc_flags &= ~FD_MOTOR_WAIT; 781 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 782 (void) fdcstate(fdc); 783 splx(s); 784 } 785 786 int 787 fdcresult(fdc) 788 struct fdc_softc *fdc; 789 { 790 u_char i; 791 int j = 100000, 792 n = 0; 793 794 for (; j; j--) { 795 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 796 if (i == NE7_RQM) 797 return (fdc->sc_nstat = n); 798 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 799 if (n >= sizeof(fdc->sc_status)) { 800 log(LOG_ERR, "fdcresult: overrun\n"); 801 return (-1); 802 } 803 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 804 } else 805 delay(10); 806 } 807 log(LOG_ERR, "fdcresult: timeout\n"); 808 return (fdc->sc_nstat = -1); 809 } 810 811 int 812 out_fdc(fdc, x) 813 struct fdc_softc *fdc; 814 u_char x; 815 { 816 int i = 100000; 817 818 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 819 delay(1); 820 if (i <= 0) 821 return (-1); 822 823 *fdc->sc_reg_fifo = x; 824 return (0); 825 } 826 827 int 828 fdopen(dev, flags, fmt, p) 829 dev_t dev; 830 int flags, fmt; 831 struct proc *p; 832 { 833 int unit, pmask; 834 struct fd_softc *fd; 835 struct fd_type *type; 836 837 unit = FDUNIT(dev); 838 if (unit >= fd_cd.cd_ndevs) 839 return (ENXIO); 840 fd = fd_cd.cd_devs[unit]; 841 if (fd == 0) 842 return (ENXIO); 843 type = fd_dev_to_type(fd, dev); 844 if (type == NULL) 845 return (ENXIO); 846 847 if ((fd->sc_flags & FD_OPEN) != 0 && 848 fd->sc_type != type) 849 return (EBUSY); 850 851 fd->sc_type = type; 852 fd->sc_cylin = -1; 853 fd->sc_flags |= FD_OPEN; 854 855 /* 856 * Only update the disklabel if we're not open anywhere else. 857 */ 858 if (fd->sc_dk.dk_openmask == 0) 859 fdgetdisklabel(dev); 860 861 pmask = (1 << DISKPART(dev)); 862 863 switch (fmt) { 864 case S_IFCHR: 865 fd->sc_dk.dk_copenmask |= pmask; 866 break; 867 868 case S_IFBLK: 869 fd->sc_dk.dk_bopenmask |= pmask; 870 break; 871 } 872 fd->sc_dk.dk_openmask = 873 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 874 875 return (0); 876 } 877 878 int 879 fdclose(dev, flags, fmt, p) 880 dev_t dev; 881 int flags, fmt; 882 struct proc *p; 883 { 884 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 885 int pmask = (1 << DISKPART(dev)); 886 887 fd->sc_flags &= ~FD_OPEN; 888 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 889 890 switch (fmt) { 891 case S_IFCHR: 892 fd->sc_dk.dk_copenmask &= ~pmask; 893 break; 894 895 case S_IFBLK: 896 fd->sc_dk.dk_bopenmask &= ~pmask; 897 break; 898 } 899 fd->sc_dk.dk_openmask = 900 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 901 902 return (0); 903 } 904 905 int 906 fdread(dev, uio, flag) 907 dev_t dev; 908 struct uio *uio; 909 int flag; 910 { 911 912 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 913 } 914 915 int 916 fdwrite(dev, uio, flag) 917 dev_t dev; 918 struct uio *uio; 919 int flag; 920 { 921 922 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 923 } 924 925 void 926 fdcstart(fdc) 927 struct fdc_softc *fdc; 928 { 929 930 #ifdef DIAGNOSTIC 931 /* only got here if controller's drive queue was inactive; should 932 be in idle state */ 933 if (fdc->sc_state != DEVIDLE) { 934 printf("fdcstart: not idle\n"); 935 return; 936 } 937 #endif 938 (void) fdcstate(fdc); 939 } 940 941 void 942 fdcstatus(dv, n, s) 943 struct device *dv; 944 int n; 945 char *s; 946 { 947 struct fdc_softc *fdc = (void *)dv->dv_parent; 948 char bits[64]; 949 #if 0 950 /* 951 * A 82072 seems to return <invalid command> on 952 * gratuitous Sense Interrupt commands. 953 */ 954 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 955 out_fdc(fdc, NE7CMD_SENSEI); 956 (void) fdcresult(fdc); 957 n = 2; 958 } 959 #endif 960 961 /* Just print last status */ 962 n = fdc->sc_nstat; 963 964 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 965 966 switch (n) { 967 case 0: 968 printf("\n"); 969 break; 970 case 2: 971 printf(" (st0 %s cyl %d)\n", 972 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 973 bits, sizeof(bits)), fdc->sc_status[1]); 974 break; 975 case 7: 976 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 977 NE7_ST0BITS, bits, sizeof(bits))); 978 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 979 NE7_ST1BITS, bits, sizeof(bits))); 980 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 981 NE7_ST2BITS, bits, sizeof(bits))); 982 printf(" cyl %d head %d sec %d)\n", 983 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 984 break; 985 #ifdef DIAGNOSTIC 986 default: 987 printf(" fdcstatus: weird size: %d\n", n); 988 break; 989 #endif 990 } 991 } 992 993 void 994 fdctimeout(arg) 995 void *arg; 996 { 997 struct fdc_softc *fdc = arg; 998 struct fd_softc *fd = fdc->sc_drives.tqh_first; 999 int s; 1000 1001 s = splbio(); 1002 fdcstatus(&fd->sc_dv, 0, "timeout"); 1003 1004 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1005 fdc->sc_state++; 1006 else 1007 fdc->sc_state = DEVIDLE; 1008 1009 (void) fdcstate(fdc); 1010 splx(s); 1011 } 1012 1013 void 1014 fdcpseudointr(arg) 1015 void *arg; 1016 { 1017 struct fdc_softc *fdc = arg; 1018 int s; 1019 1020 /* Just ensure it has the right spl. */ 1021 s = splbio(); 1022 (void) fdcstate(fdc); 1023 splx(s); 1024 } 1025 1026 1027 /* 1028 * hardware interrupt entry point: must be converted to `fast' 1029 * (in-window) handler. 1030 */ 1031 int 1032 fdchwintr(arg) 1033 void *arg; 1034 { 1035 struct fdc_softc *fdc = arg; 1036 1037 /* 1038 * This code was reverse engineered from the SPARC bsd_fdintr.s. 1039 */ 1040 switch (fdc->sc_istate) { 1041 case ISTATE_IDLE: 1042 return (0); 1043 case ISTATE_SENSEI: 1044 out_fdc(fdc, NE7CMD_SENSEI); 1045 fdcresult(fdc); 1046 fdc->sc_istate = ISTATE_DONE; 1047 FD_SET_SWINTR(); 1048 return (1); 1049 case ISTATE_DMA: 1050 break; 1051 default: 1052 log(LOG_ERR, "fdc: stray hard interrupt.\n"); 1053 fdc->sc_fcr &= ~(FCR_DSEL(0)); /* Does this help? */ 1054 fdc->sc_istate = ISTATE_SPURIOUS; 1055 FD_SET_SWINTR(); 1056 return (1); 1057 } 1058 1059 for (;;) { 1060 int msr; 1061 1062 msr = *fdc->sc_reg_msr; 1063 1064 if ((msr & NE7_RQM) == 0) 1065 break; 1066 1067 if ((msr & NE7_NDM) == 0) { 1068 fdcresult(fdc); 1069 fdc->sc_istate = ISTATE_DONE; 1070 FD_SET_SWINTR(); 1071 log(LOG_ERR, "fdc: overrun: tc = %d\n", fdc->sc_tc); 1072 break; 1073 } 1074 1075 if (msr & NE7_DIO) { 1076 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1077 } else { 1078 *fdc->sc_reg_fifo = *fdc->sc_data++; 1079 } 1080 if (--fdc->sc_tc == 0) { 1081 fdc->sc_fcr |= FCR_TC; 1082 FCR_REG_SYNC(); 1083 fdc->sc_istate = ISTATE_DONE; 1084 delay(10); 1085 fdc->sc_fcr &= ~FCR_TC; 1086 FCR_REG_SYNC(); 1087 fdcresult(fdc); 1088 FD_SET_SWINTR(); 1089 break; 1090 } 1091 } 1092 return (1); 1093 } 1094 1095 int 1096 fdcswintr(arg) 1097 void *arg; 1098 { 1099 struct fdc_softc *fdc = arg; 1100 int s; 1101 1102 if (fdc_softpend == 0) 1103 return (0); 1104 1105 isr_soft_clear(FDC_SOFTPRI); 1106 fdc_softpend = 0; 1107 1108 if (fdc->sc_istate != ISTATE_DONE) 1109 return (0); 1110 1111 fdc->sc_istate = ISTATE_IDLE; 1112 s = splbio(); 1113 fdcstate(fdc); 1114 splx(s); 1115 return (1); 1116 } 1117 1118 int 1119 fdcstate(fdc) 1120 struct fdc_softc *fdc; 1121 { 1122 #define st0 fdc->sc_status[0] 1123 #define st1 fdc->sc_status[1] 1124 #define cyl fdc->sc_status[1] 1125 #define OUT_FDC(fdc, c, s) \ 1126 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1127 1128 struct fd_softc *fd; 1129 struct buf *bp; 1130 int read, head, sec, nblks; 1131 struct fd_type *type; 1132 struct ne7_fd_formb *finfo = NULL; 1133 1134 1135 if (fdc->sc_istate != ISTATE_IDLE) { 1136 /* Trouble... */ 1137 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1138 fdc->sc_state, fdc->sc_istate); 1139 fdc->sc_istate = ISTATE_IDLE; 1140 if (fdc->sc_state == RESETCOMPLETE || 1141 fdc->sc_state == RESETTIMEDOUT) { 1142 panic("fdcintr: spurious interrupt can't be cleared"); 1143 } 1144 goto doreset; 1145 } 1146 1147 loop: 1148 /* Is there a drive for the controller to do a transfer with? */ 1149 fd = fdc->sc_drives.tqh_first; 1150 if (fd == NULL) { 1151 fdc->sc_state = DEVIDLE; 1152 return (0); 1153 } 1154 1155 /* Is there a transfer to this drive? If not, deactivate drive. */ 1156 bp = BUFQ_PEEK(&fd->sc_q); 1157 if (bp == NULL) { 1158 fd->sc_ops = 0; 1159 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1160 fd->sc_active = 0; 1161 goto loop; 1162 } 1163 1164 if (bp->b_flags & B_FORMAT) 1165 finfo = (struct ne7_fd_formb *)bp->b_data; 1166 1167 switch (fdc->sc_state) { 1168 case DEVIDLE: 1169 fdc->sc_errors = 0; 1170 fd->sc_skip = 0; 1171 fd->sc_bcount = bp->b_bcount; 1172 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1173 callout_stop(&fd->sc_motoroff_ch); 1174 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1175 fdc->sc_state = MOTORWAIT; 1176 return (1); 1177 } 1178 if ((fd->sc_flags & FD_MOTOR) == 0) { 1179 /* Turn on the motor, being careful about pairing. */ 1180 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1181 if (ofd && ofd->sc_flags & FD_MOTOR) { 1182 callout_stop(&ofd->sc_motoroff_ch); 1183 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1184 } 1185 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1186 fd_set_motor(fdc); 1187 fdc->sc_state = MOTORWAIT; 1188 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1189 /* Allow .25s for motor to stabilize. */ 1190 callout_reset(&fd->sc_motoron_ch, hz / 4, 1191 fd_motor_on, fd); 1192 } else { 1193 fd->sc_flags &= ~FD_MOTOR_WAIT; 1194 goto loop; 1195 } 1196 return (1); 1197 } 1198 /* Make sure the right drive is selected. */ 1199 fd_set_motor(fdc); 1200 1201 /*FALLTHROUGH*/ 1202 case DOSEEK: 1203 doseek: 1204 if ((fdc->sc_flags & FDC_EIS) && 1205 (bp->b_flags & B_FORMAT) == 0) { 1206 fd->sc_cylin = bp->b_cylinder; 1207 /* We use implied seek */ 1208 goto doio; 1209 } 1210 1211 if (fd->sc_cylin == bp->b_cylinder) 1212 goto doio; 1213 1214 /* specify command */ 1215 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1216 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1217 OUT_FDC(fdc, 6|1, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1218 1219 fdc->sc_istate = ISTATE_SENSEI; 1220 /* seek function */ 1221 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1222 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1223 OUT_FDC(fdc, bp->b_cylinder * fd->sc_type->step, SEEKTIMEDOUT); 1224 1225 fd->sc_cylin = -1; 1226 fdc->sc_state = SEEKWAIT; 1227 fdc->sc_nstat = 0; 1228 1229 fd->sc_dk.dk_seek++; 1230 disk_busy(&fd->sc_dk); 1231 1232 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1233 return (1); 1234 1235 case DOIO: 1236 doio: 1237 #ifdef NOTYET 1238 /* Check to see if the disk has changed */ 1239 if (fdc->sc_reg_dir & FDI_DCHG) { 1240 /* 1241 * The disk in the drive has changed since 1242 * the last transfer. We need to see if its geometry 1243 * has changed. 1244 */ 1245 } 1246 #endif /* NOTYET */ 1247 1248 if (finfo) 1249 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1250 (char *)finfo; 1251 type = fd->sc_type; 1252 sec = fd->sc_blkno % type->seccyl; 1253 nblks = type->seccyl - sec; 1254 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1255 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1256 fd->sc_nblks = nblks; 1257 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1258 head = sec / type->sectrac; 1259 sec -= head * type->sectrac; 1260 #ifdef DIAGNOSTIC 1261 {int block; 1262 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1263 if (block != fd->sc_blkno) { 1264 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1265 #ifdef DDB 1266 Debugger(); 1267 #endif 1268 }} 1269 #endif 1270 read = bp->b_flags & B_READ; 1271 1272 /* Setup for pseudo DMA */ 1273 fdc->sc_data = bp->b_data + fd->sc_skip; 1274 fdc->sc_tc = fd->sc_nbytes; 1275 1276 *fdc->sc_reg_drs = type->rate; 1277 #ifdef FD_DEBUG 1278 if (fdc_debug > 1) 1279 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1280 read ? "read" : "write", fd->sc_drive, 1281 fd->sc_cylin, head, sec, nblks); 1282 #endif 1283 fdc->sc_state = IOCOMPLETE; 1284 fdc->sc_istate = ISTATE_DMA; 1285 fdc->sc_nstat = 0; 1286 if (finfo) { 1287 /* formatting */ 1288 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1289 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1290 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1291 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1292 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1293 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1294 } else { 1295 if (read) 1296 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1297 else 1298 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1299 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1300 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1301 OUT_FDC(fdc, head, IOTIMEDOUT); 1302 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1303 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1304 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1305 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1306 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1307 } 1308 1309 disk_busy(&fd->sc_dk); 1310 1311 /* allow 2 seconds for operation */ 1312 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1313 return (1); /* will return later */ 1314 1315 case SEEKWAIT: 1316 callout_stop(&fdc->sc_timo_ch); 1317 fdc->sc_state = SEEKCOMPLETE; 1318 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1319 /* allow 1/50 second for heads to settle */ 1320 callout_reset(&fdc->sc_intr_ch, hz / 50, 1321 fdcpseudointr, fdc); 1322 return (1); /* will return later */ 1323 } 1324 /*FALLTHROUGH*/ 1325 case SEEKCOMPLETE: 1326 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1327 1328 /* Make sure seek really happened. */ 1329 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1330 cyl != bp->b_cylinder * fd->sc_type->step) { 1331 #ifdef FD_DEBUG 1332 if (fdc_debug) 1333 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1334 #endif 1335 fdcretry(fdc); 1336 goto loop; 1337 } 1338 fd->sc_cylin = bp->b_cylinder; 1339 goto doio; 1340 1341 case IOTIMEDOUT: 1342 fdc->sc_fcr |= FCR_TC; 1343 FCR_REG_SYNC(); 1344 delay(10); 1345 fdc->sc_fcr &= ~FCR_TC; 1346 FCR_REG_SYNC(); 1347 (void)fdcresult(fdc); 1348 /*FALLTHROUGH*/ 1349 case SEEKTIMEDOUT: 1350 case RECALTIMEDOUT: 1351 case RESETTIMEDOUT: 1352 fdcretry(fdc); 1353 goto loop; 1354 1355 case IOCOMPLETE: /* IO DONE, post-analyze */ 1356 callout_stop(&fdc->sc_timo_ch); 1357 1358 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 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