1 /* $NetBSD: fd.c,v 1.36 2003/06/18 08:58:42 drochner 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/disk.h> 53 #include <sys/fdio.h> 54 #include <sys/buf.h> 55 #include <sys/malloc.h> 56 #include <sys/proc.h> 57 #include <sys/uio.h> 58 #include <sys/stat.h> 59 #include <sys/syslog.h> 60 #include <sys/queue.h> 61 #include <sys/conf.h> 62 63 #include <dev/cons.h> 64 65 #include <uvm/uvm_extern.h> 66 67 #include <machine/cpu.h> 68 #include <machine/autoconf.h> 69 70 #include <sun3/dev/fdreg.h> 71 #include <sun3/dev/fdvar.h> 72 73 /* 74 * Print a complaint when no fd children were specified 75 * in the config file. Better than a link error... 76 * 77 * XXX: Some folks say this driver should be split in two, 78 * but that seems pointless with ONLY one type of child. 79 * (Thankfully, no 3/80 boxes have floppy tapes!:) 80 */ 81 #include "fdc.h" 82 #if NFD == 0 83 #error "fdc but no fd?" 84 #endif 85 86 #define FDUNIT(dev) (minor(dev) / 8) 87 #define FDTYPE(dev) (minor(dev) % 8) 88 89 /* XXX misuse a flag to identify format operation */ 90 #define B_FORMAT B_XXX 91 92 #ifdef FD_DEBUG 93 int fdc_debug = 0; 94 #endif 95 96 enum fdc_state { 97 DEVIDLE = 0, 98 MOTORWAIT, 99 DOSEEK, 100 SEEKWAIT, 101 SEEKTIMEDOUT, 102 SEEKCOMPLETE, 103 DOIO, 104 IOCOMPLETE, 105 IOTIMEDOUT, 106 DORESET, 107 RESETCOMPLETE, 108 RESETTIMEDOUT, 109 DORECAL, 110 RECALWAIT, 111 RECALTIMEDOUT, 112 RECALCOMPLETE, 113 }; 114 115 /* software state, per controller */ 116 struct fdc_softc { 117 struct device sc_dev; /* boilerplate */ 118 caddr_t sc_reg; 119 120 struct callout sc_timo_ch; /* timeout callout */ 121 struct callout sc_intr_ch; /* pseudo-intr callout */ 122 123 struct fd_softc *sc_fd[4]; /* pointers to children */ 124 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 125 enum fdc_state sc_state; 126 int sc_flags; 127 #define FDC_82077 0x01 128 #define FDC_NEEDHEADSETTLE 0x02 129 #define FDC_EIS 0x04 130 int sc_errors; /* number of retries so far */ 131 int sc_overruns; /* number of DMA overruns */ 132 int sc_cfg; /* current configuration */ 133 int sc_fcr; /* current image of floppy ctrlr reg. */ 134 struct fdcio sc_io; 135 #define sc_reg_msr sc_io.fdcio_reg_msr 136 #define sc_reg_fifo sc_io.fdcio_reg_fifo 137 #define sc_reg_fcr sc_io.fdcio_reg_fcr 138 #define sc_reg_fvr sc_io.fdcio_reg_fvr 139 #define sc_reg_drs sc_io.fdcio_reg_msr 140 #define sc_istate sc_io.fdcio_istate 141 #define sc_data sc_io.fdcio_data 142 #define sc_tc sc_io.fdcio_tc 143 #define sc_nstat sc_io.fdcio_nstat 144 #define sc_status sc_io.fdcio_status 145 #define sc_intrcnt sc_io.fdcio_intrcnt 146 }; 147 148 /* controller driver configuration */ 149 int fdcmatch __P((struct device *, struct cfdata *, void *)); 150 void fdcattach __P((struct device *, struct device *, void *)); 151 152 CFATTACH_DECL(fdc, sizeof(struct fdc_softc), 153 fdcmatch, fdcattach, NULL, NULL); 154 155 extern struct cfdriver fdc_cd; 156 157 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 158 159 /* 160 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 161 * we tell them apart. 162 */ 163 struct fd_type { 164 int sectrac; /* sectors per track */ 165 int heads; /* number of heads */ 166 int seccyl; /* sectors per cylinder */ 167 int secsize; /* size code for sectors */ 168 int datalen; /* data len when secsize = 0 */ 169 int steprate; /* step rate and head unload time */ 170 int gap1; /* gap len between sectors */ 171 int gap2; /* formatting gap */ 172 int tracks; /* total num of tracks */ 173 int size; /* size of disk in sectors */ 174 int step; /* steps per cylinder */ 175 int rate; /* transfer speed code */ 176 int fillbyte; /* format fill byte */ 177 int interleave; /* interleave factor (formatting) */ 178 char *name; 179 }; 180 181 /* The order of entries in the following table is important -- BEWARE! */ 182 struct fd_type fd_types[] = { 183 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 184 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 185 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 186 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 187 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 188 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 189 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 190 }; 191 192 /* software state, per disk (with up to 4 disks per ctlr) */ 193 struct fd_softc { 194 struct device sc_dv; /* generic device info */ 195 struct disk sc_dk; /* generic disk info */ 196 197 struct fd_type *sc_deftype; /* default type descriptor */ 198 struct fd_type *sc_type; /* current type descriptor */ 199 200 struct callout sc_motoron_ch; 201 struct callout sc_motoroff_ch; 202 203 daddr_t sc_blkno; /* starting block number */ 204 int sc_bcount; /* byte count left */ 205 int sc_skip; /* bytes already transferred */ 206 int sc_nblks; /* number of blocks currently transferring */ 207 int sc_nbytes; /* number of bytes currently transferring */ 208 209 int sc_drive; /* physical unit number */ 210 int sc_flags; 211 #define FD_OPEN 0x01 /* it's open */ 212 #define FD_MOTOR 0x02 /* motor should be on */ 213 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 214 int sc_cylin; /* where we think the head is */ 215 int sc_opts; /* user-set options */ 216 217 void *sc_sdhook; /* shutdownhook cookie */ 218 219 TAILQ_ENTRY(fd_softc) sc_drivechain; 220 int sc_ops; /* I/O ops since last switch */ 221 struct bufq_state sc_q; /* pending I/O requests */ 222 int sc_active; /* number of active I/O operations */ 223 }; 224 225 /* floppy driver configuration */ 226 int fdmatch __P((struct device *, struct cfdata *, void *)); 227 void fdattach __P((struct device *, struct device *, void *)); 228 229 CFATTACH_DECL(fd, sizeof(struct fd_softc), 230 fdmatch, fdattach, NULL, NULL); 231 232 extern struct cfdriver fd_cd; 233 234 dev_type_open(fdopen); 235 dev_type_close(fdclose); 236 dev_type_read(fdread); 237 dev_type_write(fdwrite); 238 dev_type_ioctl(fdioctl); 239 dev_type_strategy(fdstrategy); 240 241 const struct bdevsw fd_bdevsw = { 242 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 243 }; 244 245 const struct cdevsw fd_cdevsw = { 246 fdopen, fdclose, fdread, fdwrite, fdioctl, 247 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 248 }; 249 250 void fdgetdisklabel __P((dev_t)); 251 int fd_get_parms __P((struct fd_softc *)); 252 void fdstart __P((struct fd_softc *)); 253 int fdprint __P((void *, const char *)); 254 255 struct dkdriver fddkdriver = { fdstrategy }; 256 257 struct fd_type *fd_nvtotype __P((char *, int, int)); 258 void fd_set_motor __P((struct fdc_softc *fdc)); 259 void fd_motor_off __P((void *arg)); 260 void fd_motor_on __P((void *arg)); 261 int fdcresult __P((struct fdc_softc *fdc)); 262 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 263 void fdcstart __P((struct fdc_softc *fdc)); 264 void fdcstatus __P((struct device *dv, int n, char *s)); 265 void fdc_reset __P((struct fdc_softc *fdc)); 266 void fdctimeout __P((void *arg)); 267 void fdcpseudointr __P((void *arg)); 268 int fdchwintr __P((void *)); 269 int fdcswintr __P((void *)); 270 int fdcstate __P((struct fdc_softc *)); 271 void fdcretry __P((struct fdc_softc *fdc)); 272 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 273 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 274 void fd_do_eject __P((struct fdc_softc *, int)); 275 void fd_mountroot_hook __P((struct device *)); 276 static void fdconf __P((struct fdc_softc *)); 277 278 static int fdc_softpend = 0; 279 #ifndef FDC_SOFTPRI 280 #define FDC_SOFTPRI 2 281 #endif 282 #define FD_SET_SWINTR() { fdc_softpend = 1; isr_soft_request(FDC_SOFTPRI); } 283 284 /* 285 * The Floppy Control Register on the sun3x, not to be confused with the 286 * Floppy ControllER Registers that this driver mostly insterfaces with, 287 * controls some of the auxillary functions of the floppy drive. These 288 * include asserting the floppy eject and terminal data count (or TC) pins 289 * of the floppy drive and controller chip respectively. 290 * 291 * Often it is necessary to toggle individual bits within this register 292 * while keeping the others untouched. However, the register does not 293 * present its latched data to the processor when read. This prevents the 294 * use of a read-modify-write cycle that would normally be used to modify 295 * individual bits. To get around this we must keep a copy of register's 296 * current value and always insure that when we wish to modify the register, 297 * we actually modify the copy and synchronize the register to it. 298 */ 299 #define FCR_REG_SYNC() (*fdc->sc_reg_fcr = fdc->sc_fcr) 300 301 int 302 fdcmatch(parent, match, aux) 303 struct device *parent; 304 struct cfdata *match; 305 void *aux; 306 { 307 struct confargs *ca = aux; 308 309 if (bus_peek(ca->ca_bustype, ca->ca_paddr, sizeof(u_char)) == -1) 310 return (0); 311 312 return (1); 313 } 314 315 /* 316 * Arguments passed between fdcattach and fdprobe. 317 */ 318 struct fdc_attach_args { 319 int fa_drive; 320 struct bootpath *fa_bootpath; 321 struct fd_type *fa_deftype; 322 }; 323 324 /* 325 * Print the location of a disk drive (called just before attaching the 326 * the drive). If `fdc' is not NULL, the drive was found but was not 327 * in the system config file; print the drive name as well. 328 * Return QUIET (config_find ignores this if the device was configured) to 329 * avoid printing `fdN not configured' messages. 330 */ 331 int 332 fdprint(aux, fdc) 333 void *aux; 334 const char *fdc; 335 { 336 struct fdc_attach_args *fa = aux; 337 338 if (!fdc) 339 aprint_normal(" drive %d", fa->fa_drive); 340 return (QUIET); 341 } 342 343 static void 344 fdconf(fdc) 345 struct fdc_softc *fdc; 346 { 347 int vroom; 348 349 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 350 return; 351 352 /* 353 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 354 * the PROM thinks is appropriate. 355 */ 356 if ((vroom = fdc->sc_status[7]) == 0) 357 vroom = 0x64; 358 359 /* Configure controller to use FIFO and Implied Seek */ 360 out_fdc(fdc, NE7CMD_CFG); 361 out_fdc(fdc, vroom); 362 out_fdc(fdc, fdc->sc_cfg); 363 out_fdc(fdc, 0); /* PRETRK */ 364 /* No result phase */ 365 } 366 367 void 368 fdcattach(parent, self, aux) 369 struct device *parent, *self; 370 void *aux; 371 { 372 struct confargs *ca = aux; 373 struct fdc_softc *fdc = (void *)self; 374 struct fdc_attach_args fa; 375 int pri, vec; 376 char code; 377 378 fdc->sc_reg = (caddr_t)bus_mapin(ca->ca_bustype, ca->ca_paddr, 379 sizeof(union fdreg)); 380 381 callout_init(&fdc->sc_timo_ch); 382 callout_init(&fdc->sc_intr_ch); 383 384 fdc->sc_state = DEVIDLE; 385 fdc->sc_istate = ISTATE_IDLE; 386 fdc->sc_flags |= FDC_EIS; 387 TAILQ_INIT(&fdc->sc_drives); 388 389 /* Assume a 82072 */ 390 code = '2'; 391 392 if (code == '7') { 393 panic("no 82077 fdc in this kernel"); 394 /* NOTREACHED */ 395 } else { 396 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 397 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 398 399 fdc->sc_reg_fcr = ((volatile u_int8_t *) fdc->sc_reg) 400 + FDC_FCR_OFFSET; 401 fdc->sc_reg_fvr = ((volatile u_int8_t *) fdc->sc_reg) 402 + FDC_FVR_OFFSET; 403 } 404 405 isr_add_autovect(fdcswintr, fdc, FDC_SOFTPRI); 406 pri = ca->ca_intpri; 407 vec = ca->ca_intvec; 408 if (vec == -1) { 409 /* Tell the FDC to fake an autovector. */ 410 vec = 0x18 + pri; /* XXX */ 411 isr_add_autovect(fdchwintr, fdc, pri); 412 } else { 413 /* An OBIO bus with vectors? Weird exception. */ 414 isr_add_vectored(fdchwintr, fdc, pri, vec); 415 } 416 *fdc->sc_reg_fvr = vec; /* Program controller w/ interrupt vector */ 417 418 printf(": (softpri %d) chip 8207%c\n", FDC_SOFTPRI, code); 419 420 #ifdef FD_DEBUG 421 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 422 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 423 if (fdc_debug) 424 printf("[version cmd]"); 425 } 426 #endif 427 428 fdc_reset(fdc); 429 /* 430 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 431 * Note: CFG_EFIFO is active-low, initial threshold value: 8 432 */ 433 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 434 fdconf(fdc); 435 436 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 437 fdc->sc_dev.dv_xname, "intr"); 438 439 /* physical limit: four drives per controller. */ 440 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 441 fa.fa_deftype = NULL; /* unknown */ 442 fa.fa_deftype = &fd_types[0]; /* XXX */ 443 (void)config_found(self, (void *)&fa, fdprint); 444 } 445 } 446 447 int 448 fdmatch(parent, match, aux) 449 struct device *parent; 450 struct cfdata *match; 451 void *aux; 452 { 453 struct fdc_softc *fdc = (void *)parent; 454 struct fdc_attach_args *fa = aux; 455 int drive = fa->fa_drive; 456 int n, ok; 457 458 if (drive > 0) 459 /* XXX - for now, punt > 1 drives */ 460 return (0); 461 462 /* select drive and turn on motor */ 463 fdc->sc_fcr |= FCR_DSEL(drive) | FCR_MTRON; 464 FCR_REG_SYNC(); 465 /* wait for motor to spin up */ 466 delay(250000); 467 468 fdc->sc_nstat = 0; 469 out_fdc(fdc, NE7CMD_RECAL); 470 out_fdc(fdc, drive); 471 /* wait for recalibrate */ 472 for (n = 0; n < 10000; n++) { 473 delay(1000); 474 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 475 /* wait a bit longer till device *really* is ready */ 476 delay(100000); 477 if (out_fdc(fdc, NE7CMD_SENSEI)) 478 break; 479 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 480 /* 481 * Got `invalid command'; we interpret it 482 * to mean that the re-calibrate hasn't in 483 * fact finished yet 484 */ 485 continue; 486 break; 487 } 488 } 489 n = fdc->sc_nstat; 490 #ifdef FD_DEBUG 491 if (fdc_debug) { 492 int i; 493 printf("fdprobe: %d stati:", n); 494 for (i = 0; i < n; i++) 495 printf(" %x", fdc->sc_status[i]); 496 printf("\n"); 497 } 498 #endif 499 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 500 501 /* turn off motor */ 502 fdc->sc_fcr &= ~(FCR_DSEL(drive)|FCR_MTRON); 503 FCR_REG_SYNC(); 504 505 return (ok); 506 } 507 508 /* 509 * Controller is working, and drive responded. Attach it. 510 */ 511 void 512 fdattach(parent, self, aux) 513 struct device *parent, *self; 514 void *aux; 515 { 516 struct fdc_softc *fdc = (void *)parent; 517 struct fd_softc *fd = (void *)self; 518 struct fdc_attach_args *fa = aux; 519 struct fd_type *type = fa->fa_deftype; 520 int drive = fa->fa_drive; 521 522 callout_init(&fd->sc_motoron_ch); 523 callout_init(&fd->sc_motoroff_ch); 524 525 /* XXX Allow `flags' to override device type? */ 526 527 if (type) 528 printf(": %s %d cyl, %d head, %d sec\n", type->name, 529 type->tracks, type->heads, type->sectrac); 530 else 531 printf(": density unknown\n"); 532 533 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 534 fd->sc_cylin = -1; 535 fd->sc_drive = drive; 536 fd->sc_deftype = type; 537 fdc->sc_fd[drive] = fd; 538 539 /* 540 * Initialize and attach the disk structure. 541 */ 542 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 543 fd->sc_dk.dk_driver = &fddkdriver; 544 disk_attach(&fd->sc_dk); 545 546 #ifdef sparc 547 /* 548 * We're told if we're the boot device in fdcattach(). 549 */ 550 if (fa->fa_bootpath) 551 fa->fa_bootpath->dev = &fd->sc_dv; 552 #endif 553 #define OUT_FDC(sc, c) { \ 554 if (out_fdc((sc), (c))) \ 555 printf("fdc: specify command failed.\n");\ 556 } 557 /* specify command */ 558 OUT_FDC(fdc, NE7CMD_SPECIFY); 559 OUT_FDC(fdc, type->steprate); 560 /* 561 * The '|1' in the following statement turns on the 'Non-DMA' bit 562 * specifier in the last byte of the SPECIFY command as described in the 563 * datasheet I have. This is necessary for the driver to work on the 564 * sun3x, because the system will not respond to the chip's requests 565 * for DMA; there is no hardware on the motherboard to support it. 566 * By enabling this bit, we will force the chip to interrupt when its 567 * FIFO is full, at which point the interrupt handler will empty it and 568 * continue. This is ``pseudo-DMA''. 569 * -J 570 */ 571 OUT_FDC(fdc, 6|1); /* XXX head load time == 6ms */ 572 #undef OUT_FDC 573 574 /* 575 * Establish a mountroot_hook anyway in case we booted 576 * with RB_ASKNAME and get selected as the boot device. 577 */ 578 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 579 580 /* Make sure the drive motor gets turned off at shutdown time. */ 581 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 582 } 583 584 __inline struct fd_type * 585 fd_dev_to_type(fd, dev) 586 struct fd_softc *fd; 587 dev_t dev; 588 { 589 int type = FDTYPE(dev); 590 591 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 592 return (NULL); 593 return (type ? &fd_types[type - 1] : fd->sc_deftype); 594 } 595 596 void 597 fdstrategy(bp) 598 struct buf *bp; /* IO operation to perform */ 599 { 600 struct fd_softc *fd; 601 int unit = FDUNIT(bp->b_dev); 602 int sz; 603 int s; 604 605 /* Valid unit, controller, and request? */ 606 if (unit >= fd_cd.cd_ndevs || 607 (fd = fd_cd.cd_devs[unit]) == 0 || 608 bp->b_blkno < 0 || 609 ((bp->b_bcount % FDC_BSIZE) != 0 && 610 (bp->b_flags & B_FORMAT) == 0)) { 611 bp->b_error = EINVAL; 612 goto bad; 613 } 614 615 /* If it's a null transfer, return immediately. */ 616 if (bp->b_bcount == 0) 617 goto done; 618 619 sz = howmany(bp->b_bcount, FDC_BSIZE); 620 621 if (bp->b_blkno + sz > fd->sc_type->size) { 622 sz = fd->sc_type->size - bp->b_blkno; 623 if (sz == 0) { 624 /* If exactly at end of disk, return EOF. */ 625 bp->b_resid = bp->b_bcount; 626 goto done; 627 } 628 if (sz < 0) { 629 /* If past end of disk, return EINVAL. */ 630 bp->b_error = EINVAL; 631 goto bad; 632 } 633 /* Otherwise, truncate request. */ 634 bp->b_bcount = sz << DEV_BSHIFT; 635 } 636 637 bp->b_rawblkno = bp->b_blkno; 638 bp->b_cylinder = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 639 640 #ifdef FD_DEBUG 641 if (fdc_debug > 1) 642 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 643 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 644 #endif 645 646 /* Queue transfer on drive, activate drive and controller if idle. */ 647 s = splbio(); 648 BUFQ_PUT(&fd->sc_q, bp); 649 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 650 if (fd->sc_active == 0) 651 fdstart(fd); 652 #ifdef DIAGNOSTIC 653 else { 654 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 655 if (fdc->sc_state == DEVIDLE) { 656 printf("fdstrategy: controller inactive\n"); 657 fdcstart(fdc); 658 } 659 } 660 #endif 661 splx(s); 662 return; 663 664 bad: 665 bp->b_flags |= B_ERROR; 666 done: 667 /* Toss transfer; we're done early. */ 668 biodone(bp); 669 } 670 671 void 672 fdstart(fd) 673 struct fd_softc *fd; 674 { 675 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 676 int active = fdc->sc_drives.tqh_first != 0; 677 678 /* Link into controller queue. */ 679 fd->sc_active = 1; 680 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 681 682 /* If controller not already active, start it. */ 683 if (!active) 684 fdcstart(fdc); 685 } 686 687 void 688 fdfinish(fd, bp) 689 struct fd_softc *fd; 690 struct buf *bp; 691 { 692 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 693 694 /* 695 * Move this drive to the end of the queue to give others a `fair' 696 * chance. We only force a switch if N operations are completed while 697 * another drive is waiting to be serviced, since there is a long motor 698 * startup delay whenever we switch. 699 */ 700 (void)BUFQ_GET(&fd->sc_q); 701 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 702 fd->sc_ops = 0; 703 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 704 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 705 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 706 } else 707 fd->sc_active = 0; 708 } 709 bp->b_resid = fd->sc_bcount; 710 fd->sc_skip = 0; 711 712 biodone(bp); 713 /* turn off motor 5s from now */ 714 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 715 fdc->sc_state = DEVIDLE; 716 } 717 718 void 719 fdc_reset(fdc) 720 struct fdc_softc *fdc; 721 { 722 fdc->sc_fcr = 0; 723 FCR_REG_SYNC(); 724 725 *fdc->sc_reg_drs = DRS_RESET; 726 delay(10); 727 *fdc->sc_reg_drs = 0; 728 729 #ifdef FD_DEBUG 730 if (fdc_debug) 731 printf("fdc reset\n"); 732 #endif 733 } 734 735 void 736 fd_set_motor(fdc) 737 struct fdc_softc *fdc; 738 { 739 struct fd_softc *fd; 740 int n; 741 742 int on = 0; 743 744 for (n = 0; n < 4; n++) 745 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 746 on = 1; 747 if (on) { 748 fdc->sc_fcr |= FCR_DSEL(0)|FCR_MTRON; /* XXX */ 749 } else { 750 fdc->sc_fcr &= ~(FCR_DSEL(0)|FCR_MTRON); /* XXX */ 751 } 752 FCR_REG_SYNC(); 753 } 754 755 void 756 fd_motor_off(arg) 757 void *arg; 758 { 759 struct fd_softc *fd = arg; 760 int s; 761 762 s = splbio(); 763 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 764 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 765 splx(s); 766 } 767 768 void 769 fd_motor_on(arg) 770 void *arg; 771 { 772 struct fd_softc *fd = arg; 773 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 774 int s; 775 776 s = splbio(); 777 fd->sc_flags &= ~FD_MOTOR_WAIT; 778 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 779 (void) fdcstate(fdc); 780 splx(s); 781 } 782 783 int 784 fdcresult(fdc) 785 struct fdc_softc *fdc; 786 { 787 u_char i; 788 int j = 100000, 789 n = 0; 790 791 for (; j; j--) { 792 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 793 if (i == NE7_RQM) 794 return (fdc->sc_nstat = n); 795 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 796 if (n >= sizeof(fdc->sc_status)) { 797 log(LOG_ERR, "fdcresult: overrun\n"); 798 return (-1); 799 } 800 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 801 } else 802 delay(10); 803 } 804 log(LOG_ERR, "fdcresult: timeout\n"); 805 return (fdc->sc_nstat = -1); 806 } 807 808 int 809 out_fdc(fdc, x) 810 struct fdc_softc *fdc; 811 u_char x; 812 { 813 int i = 100000; 814 815 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 816 delay(1); 817 if (i <= 0) 818 return (-1); 819 820 *fdc->sc_reg_fifo = x; 821 return (0); 822 } 823 824 int 825 fdopen(dev, flags, fmt, p) 826 dev_t dev; 827 int flags, fmt; 828 struct proc *p; 829 { 830 int unit, pmask; 831 struct fd_softc *fd; 832 struct fd_type *type; 833 834 unit = FDUNIT(dev); 835 if (unit >= fd_cd.cd_ndevs) 836 return (ENXIO); 837 fd = fd_cd.cd_devs[unit]; 838 if (fd == 0) 839 return (ENXIO); 840 type = fd_dev_to_type(fd, dev); 841 if (type == NULL) 842 return (ENXIO); 843 844 if ((fd->sc_flags & FD_OPEN) != 0 && 845 fd->sc_type != type) 846 return (EBUSY); 847 848 fd->sc_type = type; 849 fd->sc_cylin = -1; 850 fd->sc_flags |= FD_OPEN; 851 852 /* 853 * Only update the disklabel if we're not open anywhere else. 854 */ 855 if (fd->sc_dk.dk_openmask == 0) 856 fdgetdisklabel(dev); 857 858 pmask = (1 << DISKPART(dev)); 859 860 switch (fmt) { 861 case S_IFCHR: 862 fd->sc_dk.dk_copenmask |= pmask; 863 break; 864 865 case S_IFBLK: 866 fd->sc_dk.dk_bopenmask |= pmask; 867 break; 868 } 869 fd->sc_dk.dk_openmask = 870 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 871 872 return (0); 873 } 874 875 int 876 fdclose(dev, flags, fmt, p) 877 dev_t dev; 878 int flags, fmt; 879 struct proc *p; 880 { 881 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 882 int pmask = (1 << DISKPART(dev)); 883 884 fd->sc_flags &= ~FD_OPEN; 885 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 886 887 switch (fmt) { 888 case S_IFCHR: 889 fd->sc_dk.dk_copenmask &= ~pmask; 890 break; 891 892 case S_IFBLK: 893 fd->sc_dk.dk_bopenmask &= ~pmask; 894 break; 895 } 896 fd->sc_dk.dk_openmask = 897 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 898 899 return (0); 900 } 901 902 int 903 fdread(dev, uio, flag) 904 dev_t dev; 905 struct uio *uio; 906 int flag; 907 { 908 909 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 910 } 911 912 int 913 fdwrite(dev, uio, flag) 914 dev_t dev; 915 struct uio *uio; 916 int flag; 917 { 918 919 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 920 } 921 922 void 923 fdcstart(fdc) 924 struct fdc_softc *fdc; 925 { 926 927 #ifdef DIAGNOSTIC 928 /* only got here if controller's drive queue was inactive; should 929 be in idle state */ 930 if (fdc->sc_state != DEVIDLE) { 931 printf("fdcstart: not idle\n"); 932 return; 933 } 934 #endif 935 (void) fdcstate(fdc); 936 } 937 938 void 939 fdcstatus(dv, n, s) 940 struct device *dv; 941 int n; 942 char *s; 943 { 944 struct fdc_softc *fdc = (void *)dv->dv_parent; 945 char bits[64]; 946 #if 0 947 /* 948 * A 82072 seems to return <invalid command> on 949 * gratuitous Sense Interrupt commands. 950 */ 951 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 952 out_fdc(fdc, NE7CMD_SENSEI); 953 (void) fdcresult(fdc); 954 n = 2; 955 } 956 #endif 957 958 /* Just print last status */ 959 n = fdc->sc_nstat; 960 961 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 962 963 switch (n) { 964 case 0: 965 printf("\n"); 966 break; 967 case 2: 968 printf(" (st0 %s cyl %d)\n", 969 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 970 bits, sizeof(bits)), fdc->sc_status[1]); 971 break; 972 case 7: 973 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 974 NE7_ST0BITS, bits, sizeof(bits))); 975 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 976 NE7_ST1BITS, bits, sizeof(bits))); 977 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 978 NE7_ST2BITS, bits, sizeof(bits))); 979 printf(" cyl %d head %d sec %d)\n", 980 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 981 break; 982 #ifdef DIAGNOSTIC 983 default: 984 printf(" fdcstatus: weird size: %d\n", n); 985 break; 986 #endif 987 } 988 } 989 990 void 991 fdctimeout(arg) 992 void *arg; 993 { 994 struct fdc_softc *fdc = arg; 995 struct fd_softc *fd = fdc->sc_drives.tqh_first; 996 int s; 997 998 s = splbio(); 999 fdcstatus(&fd->sc_dv, 0, "timeout"); 1000 1001 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1002 fdc->sc_state++; 1003 else 1004 fdc->sc_state = DEVIDLE; 1005 1006 (void) fdcstate(fdc); 1007 splx(s); 1008 } 1009 1010 void 1011 fdcpseudointr(arg) 1012 void *arg; 1013 { 1014 struct fdc_softc *fdc = arg; 1015 int s; 1016 1017 /* Just ensure it has the right spl. */ 1018 s = splbio(); 1019 (void) fdcstate(fdc); 1020 splx(s); 1021 } 1022 1023 1024 /* 1025 * hardware interrupt entry point: must be converted to `fast' 1026 * (in-window) handler. 1027 */ 1028 int 1029 fdchwintr(arg) 1030 void *arg; 1031 { 1032 struct fdc_softc *fdc = arg; 1033 1034 /* 1035 * This code was reverse engineered from the SPARC bsd_fdintr.s. 1036 */ 1037 switch (fdc->sc_istate) { 1038 case ISTATE_IDLE: 1039 return (0); 1040 case ISTATE_SENSEI: 1041 out_fdc(fdc, NE7CMD_SENSEI); 1042 fdcresult(fdc); 1043 fdc->sc_istate = ISTATE_DONE; 1044 FD_SET_SWINTR(); 1045 return (1); 1046 case ISTATE_DMA: 1047 break; 1048 default: 1049 log(LOG_ERR, "fdc: stray hard interrupt.\n"); 1050 fdc->sc_fcr &= ~(FCR_DSEL(0)); /* Does this help? */ 1051 fdc->sc_istate = ISTATE_SPURIOUS; 1052 FD_SET_SWINTR(); 1053 return (1); 1054 } 1055 1056 for (;;) { 1057 int msr; 1058 1059 msr = *fdc->sc_reg_msr; 1060 1061 if ((msr & NE7_RQM) == 0) 1062 break; 1063 1064 if ((msr & NE7_NDM) == 0) { 1065 fdcresult(fdc); 1066 fdc->sc_istate = ISTATE_DONE; 1067 FD_SET_SWINTR(); 1068 log(LOG_ERR, "fdc: overrun: tc = %d\n", fdc->sc_tc); 1069 break; 1070 } 1071 1072 if (msr & NE7_DIO) { 1073 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1074 } else { 1075 *fdc->sc_reg_fifo = *fdc->sc_data++; 1076 } 1077 if (--fdc->sc_tc == 0) { 1078 fdc->sc_fcr |= FCR_TC; 1079 FCR_REG_SYNC(); 1080 fdc->sc_istate = ISTATE_DONE; 1081 delay(10); 1082 fdc->sc_fcr &= ~FCR_TC; 1083 FCR_REG_SYNC(); 1084 fdcresult(fdc); 1085 FD_SET_SWINTR(); 1086 break; 1087 } 1088 } 1089 return (1); 1090 } 1091 1092 int 1093 fdcswintr(arg) 1094 void *arg; 1095 { 1096 struct fdc_softc *fdc = arg; 1097 int s; 1098 1099 if (fdc_softpend == 0) 1100 return (0); 1101 1102 isr_soft_clear(FDC_SOFTPRI); 1103 fdc_softpend = 0; 1104 1105 if (fdc->sc_istate != ISTATE_DONE) 1106 return (0); 1107 1108 fdc->sc_istate = ISTATE_IDLE; 1109 s = splbio(); 1110 fdcstate(fdc); 1111 splx(s); 1112 return (1); 1113 } 1114 1115 int 1116 fdcstate(fdc) 1117 struct fdc_softc *fdc; 1118 { 1119 #define st0 fdc->sc_status[0] 1120 #define st1 fdc->sc_status[1] 1121 #define cyl fdc->sc_status[1] 1122 #define OUT_FDC(fdc, c, s) \ 1123 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1124 1125 struct fd_softc *fd; 1126 struct buf *bp; 1127 int read, head, sec, nblks; 1128 struct fd_type *type; 1129 struct ne7_fd_formb *finfo = NULL; 1130 1131 1132 if (fdc->sc_istate != ISTATE_IDLE) { 1133 /* Trouble... */ 1134 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1135 fdc->sc_state, fdc->sc_istate); 1136 fdc->sc_istate = ISTATE_IDLE; 1137 if (fdc->sc_state == RESETCOMPLETE || 1138 fdc->sc_state == RESETTIMEDOUT) { 1139 panic("fdcintr: spurious interrupt can't be cleared"); 1140 } 1141 goto doreset; 1142 } 1143 1144 loop: 1145 /* Is there a drive for the controller to do a transfer with? */ 1146 fd = fdc->sc_drives.tqh_first; 1147 if (fd == NULL) { 1148 fdc->sc_state = DEVIDLE; 1149 return (0); 1150 } 1151 1152 /* Is there a transfer to this drive? If not, deactivate drive. */ 1153 bp = BUFQ_PEEK(&fd->sc_q); 1154 if (bp == NULL) { 1155 fd->sc_ops = 0; 1156 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1157 fd->sc_active = 0; 1158 goto loop; 1159 } 1160 1161 if (bp->b_flags & B_FORMAT) 1162 finfo = (struct ne7_fd_formb *)bp->b_data; 1163 1164 switch (fdc->sc_state) { 1165 case DEVIDLE: 1166 fdc->sc_errors = 0; 1167 fd->sc_skip = 0; 1168 fd->sc_bcount = bp->b_bcount; 1169 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1170 callout_stop(&fd->sc_motoroff_ch); 1171 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1172 fdc->sc_state = MOTORWAIT; 1173 return (1); 1174 } 1175 if ((fd->sc_flags & FD_MOTOR) == 0) { 1176 /* Turn on the motor, being careful about pairing. */ 1177 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1178 if (ofd && ofd->sc_flags & FD_MOTOR) { 1179 callout_stop(&ofd->sc_motoroff_ch); 1180 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1181 } 1182 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1183 fd_set_motor(fdc); 1184 fdc->sc_state = MOTORWAIT; 1185 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1186 /* Allow .25s for motor to stabilize. */ 1187 callout_reset(&fd->sc_motoron_ch, hz / 4, 1188 fd_motor_on, fd); 1189 } else { 1190 fd->sc_flags &= ~FD_MOTOR_WAIT; 1191 goto loop; 1192 } 1193 return (1); 1194 } 1195 /* Make sure the right drive is selected. */ 1196 fd_set_motor(fdc); 1197 1198 /*FALLTHROUGH*/ 1199 case DOSEEK: 1200 doseek: 1201 if ((fdc->sc_flags & FDC_EIS) && 1202 (bp->b_flags & B_FORMAT) == 0) { 1203 fd->sc_cylin = bp->b_cylinder; 1204 /* We use implied seek */ 1205 goto doio; 1206 } 1207 1208 if (fd->sc_cylin == bp->b_cylinder) 1209 goto doio; 1210 1211 /* specify command */ 1212 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1213 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1214 OUT_FDC(fdc, 6|1, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1215 1216 fdc->sc_istate = ISTATE_SENSEI; 1217 /* seek function */ 1218 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1219 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1220 OUT_FDC(fdc, bp->b_cylinder * fd->sc_type->step, SEEKTIMEDOUT); 1221 1222 fd->sc_cylin = -1; 1223 fdc->sc_state = SEEKWAIT; 1224 fdc->sc_nstat = 0; 1225 1226 fd->sc_dk.dk_seek++; 1227 disk_busy(&fd->sc_dk); 1228 1229 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1230 return (1); 1231 1232 case DOIO: 1233 doio: 1234 #ifdef NOTYET 1235 /* Check to see if the disk has changed */ 1236 if (fdc->sc_reg_dir & FDI_DCHG) { 1237 /* 1238 * The disk in the drive has changed since 1239 * the last transfer. We need to see if its geometry 1240 * has changed. 1241 */ 1242 } 1243 #endif /* NOTYET */ 1244 1245 if (finfo) 1246 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1247 (char *)finfo; 1248 type = fd->sc_type; 1249 sec = fd->sc_blkno % type->seccyl; 1250 nblks = type->seccyl - sec; 1251 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1252 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1253 fd->sc_nblks = nblks; 1254 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1255 head = sec / type->sectrac; 1256 sec -= head * type->sectrac; 1257 #ifdef DIAGNOSTIC 1258 {int block; 1259 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1260 if (block != fd->sc_blkno) { 1261 printf("fdcintr: block %d != blkno %" PRIu64 "\n", 1262 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