1 /* $NetBSD: fd.c,v 1.10 1998/08/15 03:02:44 mycroft 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/kernel.h> 47 #include <sys/file.h> 48 #include <sys/ioctl.h> 49 #include <sys/device.h> 50 #include <sys/disklabel.h> 51 #include <sys/dkstat.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 <machine/cpu.h> 66 #include <machine/autoconf.h> 67 68 #include <sun3/dev/fdreg.h> 69 #include <sun3/dev/fdvar.h> 70 71 /* 72 * Print a complaint when no fd children were specified 73 * in the config file. Better than a link error... 74 * 75 * XXX: Some folks say this driver should be split in two, 76 * but that seems pointless with ONLY one type of child. 77 * (Thankfully, no 3/80 boxes have floppy tapes!:) 78 */ 79 #include "fdc.h" 80 #if NFD == 0 81 #error "fdc but no fd?" 82 #endif 83 84 #define FDUNIT(dev) (minor(dev) / 8) 85 #define FDTYPE(dev) (minor(dev) % 8) 86 87 /* XXX misuse a flag to identify format operation */ 88 #define B_FORMAT B_XXX 89 #define b_cylin b_resid 90 91 #ifdef FD_DEBUG 92 int fdc_debug = 0; 93 #endif 94 95 enum fdc_state { 96 DEVIDLE = 0, 97 MOTORWAIT, 98 DOSEEK, 99 SEEKWAIT, 100 SEEKTIMEDOUT, 101 SEEKCOMPLETE, 102 DOIO, 103 IOCOMPLETE, 104 IOTIMEDOUT, 105 DORESET, 106 RESETCOMPLETE, 107 RESETTIMEDOUT, 108 DORECAL, 109 RECALWAIT, 110 RECALTIMEDOUT, 111 RECALCOMPLETE, 112 }; 113 114 /* software state, per controller */ 115 struct fdc_softc { 116 struct device sc_dev; /* boilerplate */ 117 caddr_t sc_reg; 118 struct fd_softc *sc_fd[4]; /* pointers to children */ 119 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 120 enum fdc_state sc_state; 121 int sc_flags; 122 #define FDC_82077 0x01 123 #define FDC_NEEDHEADSETTLE 0x02 124 #define FDC_EIS 0x04 125 int sc_errors; /* number of retries so far */ 126 int sc_overruns; /* number of DMA overruns */ 127 int sc_cfg; /* current configuration */ 128 int sc_fcr; /* current image of floppy ctrlr reg. */ 129 struct fdcio sc_io; 130 #define sc_reg_msr sc_io.fdcio_reg_msr 131 #define sc_reg_fifo sc_io.fdcio_reg_fifo 132 #define sc_reg_fcr sc_io.fdcio_reg_fcr 133 #define sc_reg_fvr sc_io.fdcio_reg_fvr 134 #define sc_reg_drs sc_io.fdcio_reg_msr 135 #define sc_istate sc_io.fdcio_istate 136 #define sc_data sc_io.fdcio_data 137 #define sc_tc sc_io.fdcio_tc 138 #define sc_nstat sc_io.fdcio_nstat 139 #define sc_status sc_io.fdcio_status 140 #define sc_intrcnt sc_io.fdcio_intrcnt 141 }; 142 143 /* controller driver configuration */ 144 int fdcmatch __P((struct device *, struct cfdata *, void *)); 145 void fdcattach __P((struct device *, struct device *, void *)); 146 147 struct cfattach fdc_ca = { 148 sizeof(struct fdc_softc), fdcmatch, fdcattach 149 }; 150 151 extern struct cfdriver fdc_cd; 152 153 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 154 155 /* 156 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 157 * we tell them apart. 158 */ 159 struct fd_type { 160 int sectrac; /* sectors per track */ 161 int heads; /* number of heads */ 162 int seccyl; /* sectors per cylinder */ 163 int secsize; /* size code for sectors */ 164 int datalen; /* data len when secsize = 0 */ 165 int steprate; /* step rate and head unload time */ 166 int gap1; /* gap len between sectors */ 167 int gap2; /* formatting gap */ 168 int tracks; /* total num of tracks */ 169 int size; /* size of disk in sectors */ 170 int step; /* steps per cylinder */ 171 int rate; /* transfer speed code */ 172 int fillbyte; /* format fill byte */ 173 int interleave; /* interleave factor (formatting) */ 174 char *name; 175 }; 176 177 /* The order of entries in the following table is important -- BEWARE! */ 178 struct fd_type fd_types[] = { 179 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 180 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 181 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 182 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 183 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 184 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 185 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 186 }; 187 188 /* software state, per disk (with up to 4 disks per ctlr) */ 189 struct fd_softc { 190 struct device sc_dv; /* generic device info */ 191 struct disk sc_dk; /* generic disk info */ 192 193 struct fd_type *sc_deftype; /* default type descriptor */ 194 struct fd_type *sc_type; /* current type descriptor */ 195 196 daddr_t sc_blkno; /* starting block number */ 197 int sc_bcount; /* byte count left */ 198 int sc_skip; /* bytes already transferred */ 199 int sc_nblks; /* number of blocks currently tranferring */ 200 int sc_nbytes; /* number of bytes currently tranferring */ 201 202 int sc_drive; /* physical unit number */ 203 int sc_flags; 204 #define FD_OPEN 0x01 /* it's open */ 205 #define FD_MOTOR 0x02 /* motor should be on */ 206 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 207 int sc_cylin; /* where we think the head is */ 208 int sc_opts; /* user-set options */ 209 210 void *sc_sdhook; /* shutdownhook cookie */ 211 212 TAILQ_ENTRY(fd_softc) sc_drivechain; 213 int sc_ops; /* I/O ops since last switch */ 214 struct buf sc_q; /* head of buf chain */ 215 }; 216 217 bdev_decl(fd); 218 cdev_decl(fd); 219 220 /* floppy driver configuration */ 221 int fdmatch __P((struct device *, struct cfdata *, void *)); 222 void fdattach __P((struct device *, struct device *, void *)); 223 224 struct cfattach fd_ca = { 225 sizeof(struct fd_softc), fdmatch, fdattach 226 }; 227 228 extern struct cfdriver fd_cd; 229 230 void fdgetdisklabel __P((dev_t)); 231 int fd_get_parms __P((struct fd_softc *)); 232 void fdstrategy __P((struct buf *)); 233 void fdstart __P((struct fd_softc *)); 234 int fdprint __P((void *, const char *)); 235 236 struct dkdriver fddkdriver = { fdstrategy }; 237 238 struct fd_type *fd_nvtotype __P((char *, int, int)); 239 void fd_set_motor __P((struct fdc_softc *fdc)); 240 void fd_motor_off __P((void *arg)); 241 void fd_motor_on __P((void *arg)); 242 int fdcresult __P((struct fdc_softc *fdc)); 243 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 244 void fdcstart __P((struct fdc_softc *fdc)); 245 void fdcstatus __P((struct device *dv, int n, char *s)); 246 void fdc_reset __P((struct fdc_softc *fdc)); 247 void fdctimeout __P((void *arg)); 248 void fdcpseudointr __P((void *arg)); 249 int fdchwintr __P((void *)); 250 int fdcswintr __P((void *)); 251 int fdcstate __P((struct fdc_softc *)); 252 void fdcretry __P((struct fdc_softc *fdc)); 253 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 254 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 255 void fd_do_eject __P((struct fdc_softc *, int)); 256 void fd_mountroot_hook __P((struct device *)); 257 static void fdconf __P((struct fdc_softc *)); 258 259 static int fdc_softpend = 0; 260 #ifndef FDC_SOFTPRI 261 #define FDC_SOFTPRI 2 262 #endif 263 #define FD_SET_SWINTR() { fdc_softpend = 1; isr_soft_request(FDC_SOFTPRI); } 264 265 /* 266 * The Floppy Control Register on the sun3x, not to be confused with the 267 * Floppy ControllER Registers that this driver mostly insterfaces with, 268 * controls some of the auxillary functions of the floppy drive. These 269 * include asserting the floppy eject and terminal data count (or TC) pins 270 * of the floppy drive and controller chip respectively. 271 * 272 * Often it is necessary to toggle individual bits within this register 273 * while keeping the others untouched. However, the register does not 274 * present its latched data to the processor when read. This prevents the 275 * use of a read-modify-write cycle that would normally be used to modify 276 * individual bits. To get around this we must keep a copy of register's 277 * current value and always insure that when we wish to modify the register, 278 * we actually modify the copy and synchronize the register to it. 279 */ 280 #define FCR_REG_SYNC() (*fdc->sc_reg_fcr = fdc->sc_fcr) 281 282 int 283 fdcmatch(parent, match, aux) 284 struct device *parent; 285 struct cfdata *match; 286 void *aux; 287 { 288 struct confargs *ca = aux; 289 290 if (bus_peek(ca->ca_bustype, ca->ca_paddr, sizeof(u_char)) == -1) 291 return (0); 292 293 return (1); 294 } 295 296 /* 297 * Arguments passed between fdcattach and fdprobe. 298 */ 299 struct fdc_attach_args { 300 int fa_drive; 301 struct bootpath *fa_bootpath; 302 struct fd_type *fa_deftype; 303 }; 304 305 /* 306 * Print the location of a disk drive (called just before attaching the 307 * the drive). If `fdc' is not NULL, the drive was found but was not 308 * in the system config file; print the drive name as well. 309 * Return QUIET (config_find ignores this if the device was configured) to 310 * avoid printing `fdN not configured' messages. 311 */ 312 int 313 fdprint(aux, fdc) 314 void *aux; 315 const char *fdc; 316 { 317 register struct fdc_attach_args *fa = aux; 318 319 if (!fdc) 320 printf(" drive %d", fa->fa_drive); 321 return (QUIET); 322 } 323 324 static void 325 fdconf(fdc) 326 struct fdc_softc *fdc; 327 { 328 int vroom; 329 330 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 331 return; 332 333 /* 334 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 335 * the PROM thinks is appropriate. 336 */ 337 if ((vroom = fdc->sc_status[7]) == 0) 338 vroom = 0x64; 339 340 /* Configure controller to use FIFO and Implied Seek */ 341 out_fdc(fdc, NE7CMD_CFG); 342 out_fdc(fdc, vroom); 343 out_fdc(fdc, fdc->sc_cfg); 344 out_fdc(fdc, 0); /* PRETRK */ 345 /* No result phase */ 346 } 347 348 void 349 fdcattach(parent, self, aux) 350 struct device *parent, *self; 351 void *aux; 352 { 353 register struct confargs *ca = aux; 354 struct fdc_softc *fdc = (void *)self; 355 struct fdc_attach_args fa; 356 int pri, vec; 357 char code; 358 359 fdc->sc_reg = (caddr_t)bus_mapin(ca->ca_bustype, ca->ca_paddr, 360 sizeof(union fdreg)); 361 362 fdc->sc_state = DEVIDLE; 363 fdc->sc_istate = ISTATE_IDLE; 364 fdc->sc_flags |= FDC_EIS; 365 TAILQ_INIT(&fdc->sc_drives); 366 367 /* Assume a 82072 */ 368 code = '2'; 369 370 if (code == '7') { 371 panic("no 82077 fdc in this kernel"); 372 /* NOTREACHED */ 373 } else { 374 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 375 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 376 377 fdc->sc_reg_fcr = ((volatile u_int8_t *) fdc->sc_reg) 378 + FDC_FCR_OFFSET; 379 fdc->sc_reg_fvr = ((volatile u_int8_t *) fdc->sc_reg) 380 + FDC_FVR_OFFSET; 381 } 382 383 isr_add_autovect(fdcswintr, fdc, FDC_SOFTPRI); 384 pri = ca->ca_intpri; 385 vec = ca->ca_intvec; 386 if (vec == -1) { 387 /* Tell the FDC to fake an autovector. */ 388 vec = 0x18 + pri; /* XXX */ 389 isr_add_autovect(fdchwintr, fdc, pri); 390 } else { 391 /* An OBIO bus with vectors? Weird exception. */ 392 isr_add_vectored(fdchwintr, fdc, pri, vec); 393 } 394 *fdc->sc_reg_fvr = vec; /* Program controller w/ interrupt vector */ 395 396 printf(": (softpri %d) chip 8207%c\n", FDC_SOFTPRI, code); 397 398 #ifdef FD_DEBUG 399 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 400 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 401 if (fdc_debug) 402 printf("[version cmd]"); 403 } 404 #endif 405 406 fdc_reset(fdc); 407 /* 408 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 409 * Note: CFG_EFIFO is active-low, initial threshold value: 8 410 */ 411 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 412 fdconf(fdc); 413 414 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 415 416 /* physical limit: four drives per controller. */ 417 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 418 fa.fa_deftype = NULL; /* unknown */ 419 fa.fa_deftype = &fd_types[0]; /* XXX */ 420 (void)config_found(self, (void *)&fa, fdprint); 421 } 422 } 423 424 int 425 fdmatch(parent, match, aux) 426 struct device *parent; 427 struct cfdata *match; 428 void *aux; 429 { 430 struct fdc_softc *fdc = (void *)parent; 431 struct fdc_attach_args *fa = aux; 432 int drive = fa->fa_drive; 433 int n, ok; 434 435 if (drive > 0) 436 /* XXX - for now, punt > 1 drives */ 437 return (0); 438 439 /* select drive and turn on motor */ 440 fdc->sc_fcr |= FCR_DSEL(drive) | FCR_MTRON; 441 FCR_REG_SYNC(); 442 /* wait for motor to spin up */ 443 delay(250000); 444 445 fdc->sc_nstat = 0; 446 out_fdc(fdc, NE7CMD_RECAL); 447 out_fdc(fdc, drive); 448 /* wait for recalibrate */ 449 for (n = 0; n < 10000; n++) { 450 delay(1000); 451 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 452 /* wait a bit longer till device *really* is ready */ 453 delay(100000); 454 if (out_fdc(fdc, NE7CMD_SENSEI)) 455 break; 456 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 457 /* 458 * Got `invalid command'; we interpret it 459 * to mean that the re-calibrate hasn't in 460 * fact finished yet 461 */ 462 continue; 463 break; 464 } 465 } 466 n = fdc->sc_nstat; 467 #ifdef FD_DEBUG 468 if (fdc_debug) { 469 int i; 470 printf("fdprobe: %d stati:", n); 471 for (i = 0; i < n; i++) 472 printf(" %x", fdc->sc_status[i]); 473 printf("\n"); 474 } 475 #endif 476 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 477 478 /* turn off motor */ 479 fdc->sc_fcr &= ~(FCR_DSEL(drive)|FCR_MTRON); 480 FCR_REG_SYNC(); 481 482 return (ok); 483 } 484 485 /* 486 * Controller is working, and drive responded. Attach it. 487 */ 488 void 489 fdattach(parent, self, aux) 490 struct device *parent, *self; 491 void *aux; 492 { 493 struct fdc_softc *fdc = (void *)parent; 494 struct fd_softc *fd = (void *)self; 495 struct fdc_attach_args *fa = aux; 496 struct fd_type *type = fa->fa_deftype; 497 int drive = fa->fa_drive; 498 499 /* XXX Allow `flags' to override device type? */ 500 501 if (type) 502 printf(": %s %d cyl, %d head, %d sec\n", type->name, 503 type->tracks, type->heads, type->sectrac); 504 else 505 printf(": density unknown\n"); 506 507 fd->sc_cylin = -1; 508 fd->sc_drive = drive; 509 fd->sc_deftype = type; 510 fdc->sc_fd[drive] = fd; 511 512 /* 513 * Initialize and attach the disk structure. 514 */ 515 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 516 fd->sc_dk.dk_driver = &fddkdriver; 517 disk_attach(&fd->sc_dk); 518 519 #ifdef sparc 520 /* 521 * We're told if we're the boot device in fdcattach(). 522 */ 523 if (fa->fa_bootpath) 524 fa->fa_bootpath->dev = &fd->sc_dv; 525 #endif 526 #define OUT_FDC(sc, c) { \ 527 if (out_fdc((sc), (c))) \ 528 printf("fdc: specify command failed.\n");\ 529 } 530 /* specify command */ 531 OUT_FDC(fdc, NE7CMD_SPECIFY); 532 OUT_FDC(fdc, type->steprate); 533 /* 534 * The '|1' in the following statement turns on the 'Non-DMA' bit 535 * specifier in the last byte of the SPECIFY command as described in the 536 * datasheet I have. This is necessary for the driver to work on the 537 * sun3x, because the system will not respond to the chip's requests 538 * for DMA; there is no hardware on the motherboard to support it. 539 * By enabling this bit, we will force the chip to interrupt when its 540 * FIFO is full, at which point the interrupt handler will empty it and 541 * continue. This is ``pseudo-DMA''. 542 * -J 543 */ 544 OUT_FDC(fdc, 6|1); /* XXX head load time == 6ms */ 545 #undef OUT_FDC 546 547 /* 548 * Establish a mountroot_hook anyway in case we booted 549 * with RB_ASKNAME and get selected as the boot device. 550 */ 551 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 552 553 /* Make sure the drive motor gets turned off at shutdown time. */ 554 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 555 556 /* XXX Need to do some more fiddling with sc_dk. */ 557 dk_establish(&fd->sc_dk, &fd->sc_dv); 558 } 559 560 __inline struct fd_type * 561 fd_dev_to_type(fd, dev) 562 struct fd_softc *fd; 563 dev_t dev; 564 { 565 int type = FDTYPE(dev); 566 567 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 568 return (NULL); 569 return (type ? &fd_types[type - 1] : fd->sc_deftype); 570 } 571 572 void 573 fdstrategy(bp) 574 register struct buf *bp; /* IO operation to perform */ 575 { 576 struct fd_softc *fd; 577 int unit = FDUNIT(bp->b_dev); 578 int sz; 579 int s; 580 581 /* Valid unit, controller, and request? */ 582 if (unit >= fd_cd.cd_ndevs || 583 (fd = fd_cd.cd_devs[unit]) == 0 || 584 bp->b_blkno < 0 || 585 ((bp->b_bcount % FDC_BSIZE) != 0 && 586 (bp->b_flags & B_FORMAT) == 0)) { 587 bp->b_error = EINVAL; 588 goto bad; 589 } 590 591 /* If it's a null transfer, return immediately. */ 592 if (bp->b_bcount == 0) 593 goto done; 594 595 sz = howmany(bp->b_bcount, FDC_BSIZE); 596 597 if (bp->b_blkno + sz > fd->sc_type->size) { 598 sz = fd->sc_type->size - bp->b_blkno; 599 if (sz == 0) { 600 /* If exactly at end of disk, return EOF. */ 601 bp->b_resid = bp->b_bcount; 602 goto done; 603 } 604 if (sz < 0) { 605 /* If past end of disk, return EINVAL. */ 606 bp->b_error = EINVAL; 607 goto bad; 608 } 609 /* Otherwise, truncate request. */ 610 bp->b_bcount = sz << DEV_BSHIFT; 611 } 612 613 bp->b_cylin = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 614 615 #ifdef FD_DEBUG 616 if (fdc_debug > 1) 617 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 618 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylin); 619 #endif 620 621 /* Queue transfer on drive, activate drive and controller if idle. */ 622 s = splbio(); 623 disksort(&fd->sc_q, bp); 624 untimeout(fd_motor_off, fd); /* a good idea */ 625 if (!fd->sc_q.b_active) 626 fdstart(fd); 627 #ifdef DIAGNOSTIC 628 else { 629 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 630 if (fdc->sc_state == DEVIDLE) { 631 printf("fdstrategy: controller inactive\n"); 632 fdcstart(fdc); 633 } 634 } 635 #endif 636 splx(s); 637 return; 638 639 bad: 640 bp->b_flags |= B_ERROR; 641 done: 642 /* Toss transfer; we're done early. */ 643 biodone(bp); 644 } 645 646 void 647 fdstart(fd) 648 struct fd_softc *fd; 649 { 650 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 651 int active = fdc->sc_drives.tqh_first != 0; 652 653 /* Link into controller queue. */ 654 fd->sc_q.b_active = 1; 655 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 656 657 /* If controller not already active, start it. */ 658 if (!active) 659 fdcstart(fdc); 660 } 661 662 void 663 fdfinish(fd, bp) 664 struct fd_softc *fd; 665 struct buf *bp; 666 { 667 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 668 669 /* 670 * Move this drive to the end of the queue to give others a `fair' 671 * chance. We only force a switch if N operations are completed while 672 * another drive is waiting to be serviced, since there is a long motor 673 * startup delay whenever we switch. 674 */ 675 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 676 fd->sc_ops = 0; 677 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 678 if (bp->b_actf) { 679 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 680 } else 681 fd->sc_q.b_active = 0; 682 } 683 bp->b_resid = fd->sc_bcount; 684 fd->sc_skip = 0; 685 fd->sc_q.b_actf = bp->b_actf; 686 687 biodone(bp); 688 /* turn off motor 5s from now */ 689 timeout(fd_motor_off, fd, 5 * hz); 690 fdc->sc_state = DEVIDLE; 691 } 692 693 void 694 fdc_reset(fdc) 695 struct fdc_softc *fdc; 696 { 697 fdc->sc_fcr = 0; 698 FCR_REG_SYNC(); 699 700 *fdc->sc_reg_drs = DRS_RESET; 701 delay(10); 702 *fdc->sc_reg_drs = 0; 703 704 #ifdef FD_DEBUG 705 if (fdc_debug) 706 printf("fdc reset\n"); 707 #endif 708 } 709 710 void 711 fd_set_motor(fdc) 712 struct fdc_softc *fdc; 713 { 714 struct fd_softc *fd; 715 int n; 716 717 int on = 0; 718 719 for (n = 0; n < 4; n++) 720 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 721 on = 1; 722 if (on) { 723 fdc->sc_fcr |= FCR_DSEL(0)|FCR_MTRON; /* XXX */ 724 } else { 725 fdc->sc_fcr &= ~(FCR_DSEL(0)|FCR_MTRON); /* XXX */ 726 } 727 FCR_REG_SYNC(); 728 } 729 730 void 731 fd_motor_off(arg) 732 void *arg; 733 { 734 struct fd_softc *fd = arg; 735 int s; 736 737 s = splbio(); 738 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 739 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 740 splx(s); 741 } 742 743 void 744 fd_motor_on(arg) 745 void *arg; 746 { 747 struct fd_softc *fd = arg; 748 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 749 int s; 750 751 s = splbio(); 752 fd->sc_flags &= ~FD_MOTOR_WAIT; 753 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 754 (void) fdcstate(fdc); 755 splx(s); 756 } 757 758 int 759 fdcresult(fdc) 760 struct fdc_softc *fdc; 761 { 762 u_char i; 763 int j = 100000, 764 n = 0; 765 766 for (; j; j--) { 767 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 768 if (i == NE7_RQM) 769 return (fdc->sc_nstat = n); 770 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 771 if (n >= sizeof(fdc->sc_status)) { 772 log(LOG_ERR, "fdcresult: overrun\n"); 773 return (-1); 774 } 775 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 776 } else 777 delay(10); 778 } 779 log(LOG_ERR, "fdcresult: timeout\n"); 780 return (fdc->sc_nstat = -1); 781 } 782 783 int 784 out_fdc(fdc, x) 785 struct fdc_softc *fdc; 786 u_char x; 787 { 788 int i = 100000; 789 790 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 791 delay(1); 792 if (i <= 0) 793 return (-1); 794 795 *fdc->sc_reg_fifo = x; 796 return (0); 797 } 798 799 int 800 fdopen(dev, flags, fmt, p) 801 dev_t dev; 802 int flags, fmt; 803 struct proc *p; 804 { 805 int unit, pmask; 806 struct fd_softc *fd; 807 struct fd_type *type; 808 809 unit = FDUNIT(dev); 810 if (unit >= fd_cd.cd_ndevs) 811 return (ENXIO); 812 fd = fd_cd.cd_devs[unit]; 813 if (fd == 0) 814 return (ENXIO); 815 type = fd_dev_to_type(fd, dev); 816 if (type == NULL) 817 return (ENXIO); 818 819 if ((fd->sc_flags & FD_OPEN) != 0 && 820 fd->sc_type != type) 821 return (EBUSY); 822 823 fd->sc_type = type; 824 fd->sc_cylin = -1; 825 fd->sc_flags |= FD_OPEN; 826 827 /* 828 * Only update the disklabel if we're not open anywhere else. 829 */ 830 if (fd->sc_dk.dk_openmask == 0) 831 fdgetdisklabel(dev); 832 833 pmask = (1 << DISKPART(dev)); 834 835 switch (fmt) { 836 case S_IFCHR: 837 fd->sc_dk.dk_copenmask |= pmask; 838 break; 839 840 case S_IFBLK: 841 fd->sc_dk.dk_bopenmask |= pmask; 842 break; 843 } 844 fd->sc_dk.dk_openmask = 845 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 846 847 return (0); 848 } 849 850 int 851 fdclose(dev, flags, fmt, p) 852 dev_t dev; 853 int flags, fmt; 854 struct proc *p; 855 { 856 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 857 int pmask = (1 << DISKPART(dev)); 858 859 fd->sc_flags &= ~FD_OPEN; 860 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 861 862 switch (fmt) { 863 case S_IFCHR: 864 fd->sc_dk.dk_copenmask &= ~pmask; 865 break; 866 867 case S_IFBLK: 868 fd->sc_dk.dk_bopenmask &= ~pmask; 869 break; 870 } 871 fd->sc_dk.dk_openmask = 872 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 873 874 return (0); 875 } 876 877 int 878 fdread(dev, uio, flag) 879 dev_t dev; 880 struct uio *uio; 881 int flag; 882 { 883 884 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 885 } 886 887 int 888 fdwrite(dev, uio, flag) 889 dev_t dev; 890 struct uio *uio; 891 int flag; 892 { 893 894 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 895 } 896 897 void 898 fdcstart(fdc) 899 struct fdc_softc *fdc; 900 { 901 902 #ifdef DIAGNOSTIC 903 /* only got here if controller's drive queue was inactive; should 904 be in idle state */ 905 if (fdc->sc_state != DEVIDLE) { 906 printf("fdcstart: not idle\n"); 907 return; 908 } 909 #endif 910 (void) fdcstate(fdc); 911 } 912 913 void 914 fdcstatus(dv, n, s) 915 struct device *dv; 916 int n; 917 char *s; 918 { 919 struct fdc_softc *fdc = (void *)dv->dv_parent; 920 char bits[64]; 921 #if 0 922 /* 923 * A 82072 seems to return <invalid command> on 924 * gratuitous Sense Interrupt commands. 925 */ 926 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 927 out_fdc(fdc, NE7CMD_SENSEI); 928 (void) fdcresult(fdc); 929 n = 2; 930 } 931 #endif 932 933 /* Just print last status */ 934 n = fdc->sc_nstat; 935 936 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 937 938 switch (n) { 939 case 0: 940 printf("\n"); 941 break; 942 case 2: 943 printf(" (st0 %s cyl %d)\n", 944 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 945 bits, sizeof(bits)), fdc->sc_status[1]); 946 break; 947 case 7: 948 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 949 NE7_ST0BITS, bits, sizeof(bits))); 950 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 951 NE7_ST1BITS, bits, sizeof(bits))); 952 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 953 NE7_ST2BITS, bits, sizeof(bits))); 954 printf(" cyl %d head %d sec %d)\n", 955 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 956 break; 957 #ifdef DIAGNOSTIC 958 default: 959 printf(" fdcstatus: weird size: %d\n", n); 960 break; 961 #endif 962 } 963 } 964 965 void 966 fdctimeout(arg) 967 void *arg; 968 { 969 struct fdc_softc *fdc = arg; 970 struct fd_softc *fd = fdc->sc_drives.tqh_first; 971 int s; 972 973 s = splbio(); 974 fdcstatus(&fd->sc_dv, 0, "timeout"); 975 976 if (fd->sc_q.b_actf) 977 fdc->sc_state++; 978 else 979 fdc->sc_state = DEVIDLE; 980 981 (void) fdcstate(fdc); 982 splx(s); 983 } 984 985 void 986 fdcpseudointr(arg) 987 void *arg; 988 { 989 struct fdc_softc *fdc = arg; 990 int s; 991 992 /* Just ensure it has the right spl. */ 993 s = splbio(); 994 (void) fdcstate(fdc); 995 splx(s); 996 } 997 998 999 /* 1000 * hardware interrupt entry point: must be converted to `fast' 1001 * (in-window) handler. 1002 */ 1003 int 1004 fdchwintr(arg) 1005 void *arg; 1006 { 1007 struct fdc_softc *fdc = arg; 1008 1009 /* 1010 * This code was reverse engineered from the SPARC bsd_fdintr.s. 1011 */ 1012 switch (fdc->sc_istate) { 1013 case ISTATE_IDLE: 1014 return (0); 1015 case ISTATE_SENSEI: 1016 out_fdc(fdc, NE7CMD_SENSEI); 1017 fdcresult(fdc); 1018 fdc->sc_istate = ISTATE_DONE; 1019 FD_SET_SWINTR(); 1020 return (1); 1021 case ISTATE_DMA: 1022 break; 1023 default: 1024 log(LOG_ERR, "fdc: stray hard interrupt.\n"); 1025 fdc->sc_fcr &= ~(FCR_DSEL(0)); /* Does this help? */ 1026 fdc->sc_istate = ISTATE_SPURIOUS; 1027 FD_SET_SWINTR(); 1028 return (1); 1029 } 1030 1031 for (;;) { 1032 register int msr; 1033 1034 msr = *fdc->sc_reg_msr; 1035 1036 if ((msr & NE7_RQM) == 0) 1037 break; 1038 1039 if ((msr & NE7_NDM) == 0) { 1040 fdcresult(fdc); 1041 fdc->sc_istate = ISTATE_DONE; 1042 FD_SET_SWINTR(); 1043 log(LOG_ERR, "fdc: overrun: tc = %d\n", fdc->sc_tc); 1044 break; 1045 } 1046 1047 if (msr & NE7_DIO) { 1048 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1049 } else { 1050 *fdc->sc_reg_fifo = *fdc->sc_data++; 1051 } 1052 if (--fdc->sc_tc == 0) { 1053 fdc->sc_fcr |= FCR_TC; 1054 FCR_REG_SYNC(); 1055 fdc->sc_istate = ISTATE_DONE; 1056 delay(10); 1057 fdc->sc_fcr &= ~FCR_TC; 1058 FCR_REG_SYNC(); 1059 fdcresult(fdc); 1060 FD_SET_SWINTR(); 1061 break; 1062 } 1063 } 1064 return (1); 1065 } 1066 1067 int 1068 fdcswintr(arg) 1069 void *arg; 1070 { 1071 struct fdc_softc *fdc = arg; 1072 int s; 1073 1074 if (fdc_softpend == 0) 1075 return (0); 1076 1077 isr_soft_clear(FDC_SOFTPRI); 1078 fdc_softpend = 0; 1079 1080 if (fdc->sc_istate != ISTATE_DONE) 1081 return (0); 1082 1083 fdc->sc_istate = ISTATE_IDLE; 1084 s = splbio(); 1085 fdcstate(fdc); 1086 splx(s); 1087 return (1); 1088 } 1089 1090 int 1091 fdcstate(fdc) 1092 struct fdc_softc *fdc; 1093 { 1094 #define st0 fdc->sc_status[0] 1095 #define st1 fdc->sc_status[1] 1096 #define cyl fdc->sc_status[1] 1097 #define OUT_FDC(fdc, c, s) \ 1098 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1099 1100 struct fd_softc *fd; 1101 struct buf *bp; 1102 int read, head, sec, nblks; 1103 struct fd_type *type; 1104 struct ne7_fd_formb *finfo = NULL; 1105 1106 1107 if (fdc->sc_istate != ISTATE_IDLE) { 1108 /* Trouble... */ 1109 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1110 fdc->sc_state, fdc->sc_istate); 1111 fdc->sc_istate = ISTATE_IDLE; 1112 if (fdc->sc_state == RESETCOMPLETE || 1113 fdc->sc_state == RESETTIMEDOUT) { 1114 panic("fdcintr: spurious interrupt can't be cleared"); 1115 } 1116 goto doreset; 1117 } 1118 1119 loop: 1120 /* Is there a drive for the controller to do a transfer with? */ 1121 fd = fdc->sc_drives.tqh_first; 1122 if (fd == NULL) { 1123 fdc->sc_state = DEVIDLE; 1124 return (0); 1125 } 1126 1127 /* Is there a transfer to this drive? If not, deactivate drive. */ 1128 bp = fd->sc_q.b_actf; 1129 if (bp == NULL) { 1130 fd->sc_ops = 0; 1131 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1132 fd->sc_q.b_active = 0; 1133 goto loop; 1134 } 1135 1136 if (bp->b_flags & B_FORMAT) 1137 finfo = (struct ne7_fd_formb *)bp->b_data; 1138 1139 switch (fdc->sc_state) { 1140 case DEVIDLE: 1141 fdc->sc_errors = 0; 1142 fd->sc_skip = 0; 1143 fd->sc_bcount = bp->b_bcount; 1144 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1145 untimeout(fd_motor_off, fd); 1146 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1147 fdc->sc_state = MOTORWAIT; 1148 return (1); 1149 } 1150 if ((fd->sc_flags & FD_MOTOR) == 0) { 1151 /* Turn on the motor, being careful about pairing. */ 1152 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1153 if (ofd && ofd->sc_flags & FD_MOTOR) { 1154 untimeout(fd_motor_off, ofd); 1155 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1156 } 1157 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1158 fd_set_motor(fdc); 1159 fdc->sc_state = MOTORWAIT; 1160 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1161 /* Allow .25s for motor to stabilize. */ 1162 timeout(fd_motor_on, fd, hz / 4); 1163 } else { 1164 fd->sc_flags &= ~FD_MOTOR_WAIT; 1165 goto loop; 1166 } 1167 return (1); 1168 } 1169 /* Make sure the right drive is selected. */ 1170 fd_set_motor(fdc); 1171 1172 /*FALLTHROUGH*/ 1173 case DOSEEK: 1174 doseek: 1175 if ((fdc->sc_flags & FDC_EIS) && 1176 (bp->b_flags & B_FORMAT) == 0) { 1177 fd->sc_cylin = bp->b_cylin; 1178 /* We use implied seek */ 1179 goto doio; 1180 } 1181 1182 if (fd->sc_cylin == bp->b_cylin) 1183 goto doio; 1184 1185 /* specify command */ 1186 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1187 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1188 OUT_FDC(fdc, 6|1, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1189 1190 fdc->sc_istate = ISTATE_SENSEI; 1191 /* seek function */ 1192 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1193 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1194 OUT_FDC(fdc, bp->b_cylin * fd->sc_type->step, SEEKTIMEDOUT); 1195 1196 fd->sc_cylin = -1; 1197 fdc->sc_state = SEEKWAIT; 1198 fdc->sc_nstat = 0; 1199 1200 fd->sc_dk.dk_seek++; 1201 disk_busy(&fd->sc_dk); 1202 1203 timeout(fdctimeout, fdc, 4 * hz); 1204 return (1); 1205 1206 case DOIO: 1207 doio: 1208 #ifdef NOTYET 1209 /* Check to see if the disk has changed */ 1210 if (fdc->sc_reg_dir & FDI_DCHG) { 1211 /* 1212 * The disk in the drive has changed since 1213 * the last transfer. We need to see if its geometry 1214 * has changed. 1215 */ 1216 } 1217 #endif /* NOTYET */ 1218 1219 if (finfo) 1220 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1221 (char *)finfo; 1222 type = fd->sc_type; 1223 sec = fd->sc_blkno % type->seccyl; 1224 nblks = type->seccyl - sec; 1225 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1226 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1227 fd->sc_nblks = nblks; 1228 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1229 head = sec / type->sectrac; 1230 sec -= head * type->sectrac; 1231 #ifdef DIAGNOSTIC 1232 {int block; 1233 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1234 if (block != fd->sc_blkno) { 1235 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1236 #ifdef DDB 1237 Debugger(); 1238 #endif 1239 }} 1240 #endif 1241 read = bp->b_flags & B_READ; 1242 1243 /* Setup for pseudo DMA */ 1244 fdc->sc_data = bp->b_data + fd->sc_skip; 1245 fdc->sc_tc = fd->sc_nbytes; 1246 1247 *fdc->sc_reg_drs = type->rate; 1248 #ifdef FD_DEBUG 1249 if (fdc_debug > 1) 1250 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1251 read ? "read" : "write", fd->sc_drive, 1252 fd->sc_cylin, head, sec, nblks); 1253 #endif 1254 fdc->sc_state = IOCOMPLETE; 1255 fdc->sc_istate = ISTATE_DMA; 1256 fdc->sc_nstat = 0; 1257 if (finfo) { 1258 /* formatting */ 1259 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1260 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1261 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1262 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1263 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1264 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1265 } else { 1266 if (read) 1267 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1268 else 1269 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1270 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1271 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1272 OUT_FDC(fdc, head, IOTIMEDOUT); 1273 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1274 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1275 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1276 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1277 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1278 } 1279 1280 disk_busy(&fd->sc_dk); 1281 1282 /* allow 2 seconds for operation */ 1283 timeout(fdctimeout, fdc, 2 * hz); 1284 return (1); /* will return later */ 1285 1286 case SEEKWAIT: 1287 untimeout(fdctimeout, fdc); 1288 fdc->sc_state = SEEKCOMPLETE; 1289 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1290 /* allow 1/50 second for heads to settle */ 1291 timeout(fdcpseudointr, fdc, hz / 50); 1292 return (1); /* will return later */ 1293 } 1294 /*FALLTHROUGH*/ 1295 case SEEKCOMPLETE: 1296 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1297 1298 /* Make sure seek really happened. */ 1299 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1300 cyl != bp->b_cylin * fd->sc_type->step) { 1301 #ifdef FD_DEBUG 1302 if (fdc_debug) 1303 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1304 #endif 1305 fdcretry(fdc); 1306 goto loop; 1307 } 1308 fd->sc_cylin = bp->b_cylin; 1309 goto doio; 1310 1311 case IOTIMEDOUT: 1312 fdc->sc_fcr |= FCR_TC; 1313 FCR_REG_SYNC(); 1314 delay(10); 1315 fdc->sc_fcr &= ~FCR_TC; 1316 FCR_REG_SYNC(); 1317 (void)fdcresult(fdc); 1318 /*FALLTHROUGH*/ 1319 case SEEKTIMEDOUT: 1320 case RECALTIMEDOUT: 1321 case RESETTIMEDOUT: 1322 fdcretry(fdc); 1323 goto loop; 1324 1325 case IOCOMPLETE: /* IO DONE, post-analyze */ 1326 untimeout(fdctimeout, fdc); 1327 1328 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1329 1330 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1331 #ifdef FD_DEBUG 1332 if (fdc_debug) { 1333 fdcstatus(&fd->sc_dv, 7, 1334 bp->b_flags & B_READ 1335 ? "read failed" : "write failed"); 1336 printf("blkno %d nblks %d tc %d\n", 1337 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1338 } 1339 #endif 1340 if (fdc->sc_nstat == 7 && 1341 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1342 1343 /* 1344 * Silently retry overruns if no other 1345 * error bit is set. Adjust threshold. 1346 */ 1347 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1348 if (thr < 15) { 1349 thr++; 1350 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1351 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1352 #ifdef FD_DEBUG 1353 if (fdc_debug) 1354 printf("fdc: %d -> threshold\n", thr); 1355 #endif 1356 fdconf(fdc); 1357 fdc->sc_overruns = 0; 1358 } 1359 if (++fdc->sc_overruns < 3) { 1360 fdc->sc_state = DOIO; 1361 goto loop; 1362 } 1363 } 1364 fdcretry(fdc); 1365 goto loop; 1366 } 1367 if (fdc->sc_errors) { 1368 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1369 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1370 printf("\n"); 1371 fdc->sc_errors = 0; 1372 } else { 1373 if (--fdc->sc_overruns < -20) { 1374 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1375 if (thr > 0) { 1376 thr--; 1377 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1378 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1379 #ifdef FD_DEBUG 1380 if (fdc_debug) 1381 printf("fdc: %d -> threshold\n", thr); 1382 #endif 1383 fdconf(fdc); 1384 } 1385 fdc->sc_overruns = 0; 1386 } 1387 } 1388 fd->sc_blkno += fd->sc_nblks; 1389 fd->sc_skip += fd->sc_nbytes; 1390 fd->sc_bcount -= fd->sc_nbytes; 1391 if (!finfo && fd->sc_bcount > 0) { 1392 bp->b_cylin = fd->sc_blkno / fd->sc_type->seccyl; 1393 goto doseek; 1394 } 1395 fdfinish(fd, bp); 1396 goto loop; 1397 1398 case DORESET: 1399 doreset: 1400 /* try a reset, keep motor on */ 1401 fd_set_motor(fdc); 1402 delay(100); 1403 fdc_reset(fdc); 1404 fdc->sc_nstat = 0; 1405 fdc->sc_istate = ISTATE_SENSEI; 1406 fdc->sc_state = RESETCOMPLETE; 1407 timeout(fdctimeout, fdc, hz / 2); 1408 return (1); /* will return later */ 1409 1410 case RESETCOMPLETE: 1411 untimeout(fdctimeout, fdc); 1412 fdconf(fdc); 1413 1414 /* fall through */ 1415 case DORECAL: 1416 fdc->sc_state = RECALWAIT; 1417 fdc->sc_istate = ISTATE_SENSEI; 1418 fdc->sc_nstat = 0; 1419 /* recalibrate function */ 1420 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1421 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1422 timeout(fdctimeout, fdc, 5 * hz); 1423 return (1); /* will return later */ 1424 1425 case RECALWAIT: 1426 untimeout(fdctimeout, fdc); 1427 fdc->sc_state = RECALCOMPLETE; 1428 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1429 /* allow 1/30 second for heads to settle */ 1430 timeout(fdcpseudointr, fdc, hz / 30); 1431 return (1); /* will return later */ 1432 } 1433 1434 case RECALCOMPLETE: 1435 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1436 #ifdef FD_DEBUG 1437 if (fdc_debug) 1438 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1439 #endif 1440 fdcretry(fdc); 1441 goto loop; 1442 } 1443 fd->sc_cylin = 0; 1444 goto doseek; 1445 1446 case MOTORWAIT: 1447 if (fd->sc_flags & FD_MOTOR_WAIT) 1448 return (1); /* time's not up yet */ 1449 goto doseek; 1450 1451 default: 1452 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1453 return (1); 1454 } 1455 #ifdef DIAGNOSTIC 1456 panic("fdcintr: impossible"); 1457 #endif 1458 #undef st0 1459 #undef st1 1460 #undef cyl 1461 } 1462 1463 void 1464 fdcretry(fdc) 1465 struct fdc_softc *fdc; 1466 { 1467 char bits[64]; 1468 struct fd_softc *fd; 1469 struct buf *bp; 1470 1471 fd = fdc->sc_drives.tqh_first; 1472 bp = fd->sc_q.b_actf; 1473 1474 fdc->sc_overruns = 0; 1475 if (fd->sc_opts & FDOPT_NORETRY) 1476 goto fail; 1477 1478 switch (fdc->sc_errors) { 1479 case 0: 1480 /* try again */ 1481 fdc->sc_state = 1482 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1483 break; 1484 1485 case 1: case 2: case 3: 1486 /* didn't work; try recalibrating */ 1487 fdc->sc_state = DORECAL; 1488 break; 1489 1490 case 4: 1491 /* still no go; reset the bastard */ 1492 fdc->sc_state = DORESET; 1493 break; 1494 1495 default: 1496 fail: 1497 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1498 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1499 fd->sc_skip / FDC_BSIZE, 1500 (struct disklabel *)NULL); 1501 1502 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1503 NE7_ST0BITS, bits, sizeof(bits))); 1504 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1505 NE7_ST1BITS, bits, sizeof(bits))); 1506 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1507 NE7_ST2BITS, bits, sizeof(bits))); 1508 printf(" cyl %d head %d sec %d)\n", 1509 fdc->sc_status[3], fdc->sc_status[4], 1510 fdc->sc_status[5]); 1511 } 1512 1513 bp->b_flags |= B_ERROR; 1514 bp->b_error = EIO; 1515 fdfinish(fd, bp); 1516 } 1517 fdc->sc_errors++; 1518 } 1519 1520 int 1521 fdsize(dev) 1522 dev_t dev; 1523 { 1524 1525 /* Swapping to floppies would not make sense. */ 1526 return (-1); 1527 } 1528 1529 int 1530 fddump(dev, blkno, va, size) 1531 dev_t dev; 1532 daddr_t blkno; 1533 caddr_t va; 1534 size_t size; 1535 { 1536 1537 /* Not implemented. */ 1538 return (EINVAL); 1539 } 1540 1541 int 1542 fdioctl(dev, cmd, addr, flag, p) 1543 dev_t dev; 1544 u_long cmd; 1545 caddr_t addr; 1546 int flag; 1547 struct proc *p; 1548 { 1549 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1550 struct fdformat_parms *form_parms; 1551 struct fdformat_cmd *form_cmd; 1552 struct ne7_fd_formb fd_formb; 1553 int il[FD_MAX_NSEC + 1]; 1554 int i, j; 1555 int error; 1556 1557 switch (cmd) { 1558 case DIOCGDINFO: 1559 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1560 return 0; 1561 1562 case DIOCWLABEL: 1563 if ((flag & FWRITE) == 0) 1564 return EBADF; 1565 /* XXX do something */ 1566 return (0); 1567 1568 case DIOCWDINFO: 1569 if ((flag & FWRITE) == 0) 1570 return (EBADF); 1571 1572 error = setdisklabel(fd->sc_dk.dk_label, 1573 (struct disklabel *)addr, 0, 1574 fd->sc_dk.dk_cpulabel); 1575 if (error) 1576 return (error); 1577 1578 error = writedisklabel(dev, fdstrategy, 1579 fd->sc_dk.dk_label, 1580 fd->sc_dk.dk_cpulabel); 1581 return (error); 1582 1583 case DIOCLOCK: 1584 /* 1585 * Nothing to do here, really. 1586 */ 1587 return (0); 1588 1589 case DIOCEJECT: 1590 fd_do_eject((void *)fd->sc_dv.dv_parent, fd->sc_drive); 1591 return (0); 1592 1593 case FDIOCGETFORMAT: 1594 form_parms = (struct fdformat_parms *)addr; 1595 form_parms->fdformat_version = FDFORMAT_VERSION; 1596 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1597 form_parms->ncyl = fd->sc_type->tracks; 1598 form_parms->nspt = fd->sc_type->sectrac; 1599 form_parms->ntrk = fd->sc_type->heads; 1600 form_parms->stepspercyl = fd->sc_type->step; 1601 form_parms->gaplen = fd->sc_type->gap2; 1602 form_parms->fillbyte = fd->sc_type->fillbyte; 1603 form_parms->interleave = fd->sc_type->interleave; 1604 switch (fd->sc_type->rate) { 1605 case FDC_500KBPS: 1606 form_parms->xfer_rate = 500 * 1024; 1607 break; 1608 case FDC_300KBPS: 1609 form_parms->xfer_rate = 300 * 1024; 1610 break; 1611 case FDC_250KBPS: 1612 form_parms->xfer_rate = 250 * 1024; 1613 break; 1614 default: 1615 return (EINVAL); 1616 } 1617 return (0); 1618 1619 case FDIOCSETFORMAT: 1620 if ((flag & FWRITE) == 0) 1621 return (EBADF); /* must be opened for writing */ 1622 1623 form_parms = (struct fdformat_parms *)addr; 1624 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1625 return (EINVAL);/* wrong version of formatting prog */ 1626 1627 i = form_parms->nbps >> 7; 1628 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1629 i & ~(1 << (ffs(i)-1))) 1630 /* not a power-of-two multiple of 128 */ 1631 return (EINVAL); 1632 1633 switch (form_parms->xfer_rate) { 1634 case 500 * 1024: 1635 fd->sc_type->rate = FDC_500KBPS; 1636 break; 1637 case 300 * 1024: 1638 fd->sc_type->rate = FDC_300KBPS; 1639 break; 1640 case 250 * 1024: 1641 fd->sc_type->rate = FDC_250KBPS; 1642 break; 1643 default: 1644 return (EINVAL); 1645 } 1646 1647 if (form_parms->nspt > FD_MAX_NSEC || 1648 form_parms->fillbyte > 0xff || 1649 form_parms->interleave > 0xff) 1650 return EINVAL; 1651 fd->sc_type->sectrac = form_parms->nspt; 1652 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1653 return EINVAL; 1654 fd->sc_type->heads = form_parms->ntrk; 1655 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1656 fd->sc_type->secsize = ffs(i)-1; 1657 fd->sc_type->gap2 = form_parms->gaplen; 1658 fd->sc_type->tracks = form_parms->ncyl; 1659 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1660 form_parms->nbps / DEV_BSIZE; 1661 fd->sc_type->step = form_parms->stepspercyl; 1662 fd->sc_type->fillbyte = form_parms->fillbyte; 1663 fd->sc_type->interleave = form_parms->interleave; 1664 return (0); 1665 1666 case FDIOCFORMAT_TRACK: 1667 if((flag & FWRITE) == 0) 1668 /* must be opened for writing */ 1669 return (EBADF); 1670 form_cmd = (struct fdformat_cmd *)addr; 1671 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1672 /* wrong version of formatting prog */ 1673 return (EINVAL); 1674 1675 if (form_cmd->head >= fd->sc_type->heads || 1676 form_cmd->cylinder >= fd->sc_type->tracks) { 1677 return (EINVAL); 1678 } 1679 1680 fd_formb.head = form_cmd->head; 1681 fd_formb.cyl = form_cmd->cylinder; 1682 fd_formb.transfer_rate = fd->sc_type->rate; 1683 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1684 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1685 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1686 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1687 1688 bzero(il, sizeof(il)); 1689 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1690 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1691 j++; 1692 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1693 j += fd->sc_type->interleave; 1694 } 1695 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1696 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1697 fd_formb.fd_formb_headno(i) = form_cmd->head; 1698 fd_formb.fd_formb_secno(i) = il[i+1]; 1699 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1700 } 1701 1702 return fdformat(dev, &fd_formb, p); 1703 1704 case FDIOCGETOPTS: /* get drive options */ 1705 *(int *)addr = fd->sc_opts; 1706 return (0); 1707 1708 case FDIOCSETOPTS: /* set drive options */ 1709 fd->sc_opts = *(int *)addr; 1710 return (0); 1711 1712 #ifdef DEBUG 1713 case _IO('f', 100): 1714 { 1715 int i; 1716 struct fdc_softc *fdc = (struct fdc_softc *) 1717 fd->sc_dv.dv_parent; 1718 1719 out_fdc(fdc, NE7CMD_DUMPREG); 1720 fdcresult(fdc); 1721 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1722 for (i = 0; i < fdc->sc_nstat; i++) 1723 printf(" %x", fdc->sc_status[i]); 1724 printf(">\n"); 1725 } 1726 1727 return (0); 1728 case _IOW('f', 101, int): 1729 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1730 ~CFG_THRHLD_MASK; 1731 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1732 (*(int *)addr & CFG_THRHLD_MASK); 1733 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1734 return (0); 1735 case _IO('f', 102): 1736 { 1737 int i; 1738 struct fdc_softc *fdc = (struct fdc_softc *) 1739 fd->sc_dv.dv_parent; 1740 out_fdc(fdc, NE7CMD_SENSEI); 1741 fdcresult(fdc); 1742 printf("sensei(%d regs): <", fdc->sc_nstat); 1743 for (i=0; i< fdc->sc_nstat; i++) 1744 printf(" 0x%x", fdc->sc_status[i]); 1745 } 1746 printf(">\n"); 1747 return (0); 1748 #endif 1749 default: 1750 return (ENOTTY); 1751 } 1752 1753 #ifdef DIAGNOSTIC 1754 panic("fdioctl: impossible"); 1755 #endif 1756 } 1757 1758 int 1759 fdformat(dev, finfo, p) 1760 dev_t dev; 1761 struct ne7_fd_formb *finfo; 1762 struct proc *p; 1763 { 1764 int rv = 0, s; 1765 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1766 struct fd_type *type = fd->sc_type; 1767 struct buf *bp; 1768 1769 /* set up a buffer header for fdstrategy() */ 1770 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1771 if (bp == 0) 1772 return (ENOBUFS); 1773 1774 PHOLD(p); 1775 bzero((void *)bp, sizeof(struct buf)); 1776 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1777 bp->b_proc = p; 1778 bp->b_dev = dev; 1779 1780 /* 1781 * Calculate a fake blkno, so fdstrategy() would initiate a 1782 * seek to the requested cylinder. 1783 */ 1784 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1785 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1786 1787 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1788 bp->b_data = (caddr_t)finfo; 1789 1790 #ifdef FD_DEBUG 1791 if (fdc_debug) 1792 printf("fdformat: blkno %x count %ld\n", 1793 bp->b_blkno, bp->b_bcount); 1794 #endif 1795 1796 /* now do the format */ 1797 fdstrategy(bp); 1798 1799 /* ...and wait for it to complete */ 1800 s = splbio(); 1801 while (!(bp->b_flags & B_DONE)) { 1802 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1803 if (rv == EWOULDBLOCK) 1804 break; 1805 } 1806 splx(s); 1807 1808 if (rv == EWOULDBLOCK) { 1809 /* timed out */ 1810 rv = EIO; 1811 biodone(bp); 1812 } 1813 if (bp->b_flags & B_ERROR) { 1814 rv = bp->b_error; 1815 } 1816 PRELE(p); 1817 free(bp, M_TEMP); 1818 return (rv); 1819 } 1820 1821 void 1822 fdgetdisklabel(dev) 1823 dev_t dev; 1824 { 1825 int unit = FDUNIT(dev), i; 1826 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1827 struct disklabel *lp = fd->sc_dk.dk_label; 1828 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1829 1830 bzero(lp, sizeof(struct disklabel)); 1831 bzero(lp, sizeof(struct cpu_disklabel)); 1832 1833 lp->d_type = DTYPE_FLOPPY; 1834 lp->d_secsize = FDC_BSIZE; 1835 lp->d_secpercyl = fd->sc_type->seccyl; 1836 lp->d_nsectors = fd->sc_type->sectrac; 1837 lp->d_ncylinders = fd->sc_type->tracks; 1838 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1839 lp->d_rpm = 3600; /* XXX like it matters... */ 1840 1841 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1842 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1843 lp->d_interleave = 1; 1844 1845 lp->d_partitions[RAW_PART].p_offset = 0; 1846 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1847 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1848 lp->d_npartitions = RAW_PART + 1; 1849 1850 lp->d_magic = DISKMAGIC; 1851 lp->d_magic2 = DISKMAGIC; 1852 lp->d_checksum = dkcksum(lp); 1853 1854 /* 1855 * Call the generic disklabel extraction routine. If there's 1856 * not a label there, fake it. 1857 */ 1858 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1859 strncpy(lp->d_packname, "default label", 1860 sizeof(lp->d_packname)); 1861 /* 1862 * Reset the partition info; it might have gotten 1863 * trashed in readdisklabel(). 1864 * 1865 * XXX Why do we have to do this? readdisklabel() 1866 * should be safe... 1867 */ 1868 for (i = 0; i < MAXPARTITIONS; ++i) { 1869 lp->d_partitions[i].p_offset = 0; 1870 if (i == RAW_PART) { 1871 lp->d_partitions[i].p_size = 1872 lp->d_secpercyl * lp->d_ncylinders; 1873 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1874 } else { 1875 lp->d_partitions[i].p_size = 0; 1876 lp->d_partitions[i].p_fstype = FS_UNUSED; 1877 } 1878 } 1879 lp->d_npartitions = RAW_PART + 1; 1880 } 1881 } 1882 1883 void 1884 fd_do_eject(fdc, unit) 1885 struct fdc_softc *fdc; 1886 int unit; 1887 { 1888 fdc->sc_fcr |= FCR_DSEL(unit)|FCR_EJECT; 1889 FCR_REG_SYNC(); 1890 delay(10); 1891 fdc->sc_fcr &= ~(FCR_DSEL(unit)|FCR_EJECT); 1892 FCR_REG_SYNC(); 1893 } 1894 1895 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1896 int fd_read_md_image __P((size_t *, caddr_t *)); 1897 #endif 1898 1899 /* ARGSUSED */ 1900 void 1901 fd_mountroot_hook(dev) 1902 struct device *dev; 1903 { 1904 int c; 1905 1906 fd_do_eject(fdc_cd.cd_devs[0], 0); /* XXX - doesn't check ``dev'' */ 1907 printf("Insert filesystem floppy and press return."); 1908 for (;;) { 1909 c = cngetc(); 1910 if ((c == '\r') || (c == '\n')) { 1911 printf("\n"); 1912 break; 1913 } 1914 } 1915 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1916 { 1917 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1918 md_read_image = fd_read_md_image; 1919 } 1920 #endif 1921 } 1922 1923 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1924 1925 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 1926 1927 int 1928 fd_read_md_image(sizep, addrp) 1929 size_t *sizep; 1930 caddr_t *addrp; 1931 { 1932 struct buf buf, *bp = &buf; 1933 dev_t dev; 1934 off_t offset; 1935 caddr_t addr; 1936 1937 dev = makedev(54,0); /* XXX */ 1938 1939 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 1940 *addrp = addr; 1941 1942 if (fdopen(dev, 0, S_IFCHR, NULL)) 1943 panic("fd: mountroot: fdopen"); 1944 1945 offset = 0; 1946 1947 for (;;) { 1948 bp->b_dev = dev; 1949 bp->b_error = 0; 1950 bp->b_resid = 0; 1951 bp->b_proc = NULL; 1952 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 1953 bp->b_blkno = btodb(offset); 1954 bp->b_bcount = DEV_BSIZE; 1955 bp->b_data = addr; 1956 fdstrategy(bp); 1957 while ((bp->b_flags & B_DONE) == 0) { 1958 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 1959 } 1960 if (bp->b_error) 1961 panic("fd: mountroot: fdread error %d", bp->b_error); 1962 1963 if (bp->b_resid != 0) 1964 break; 1965 1966 addr += DEV_BSIZE; 1967 offset += DEV_BSIZE; 1968 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 1969 break; 1970 } 1971 (void)fdclose(dev, 0, S_IFCHR, NULL); 1972 *sizep = offset; 1973 fd_do_eject(fdc_cd.cd_devs[0], FDUNIT(dev)); /* XXX */ 1974 return (0); 1975 } 1976 #endif 1977