1 /* $NetBSD: fd.c,v 1.15 2000/02/07 20:16:53 thorpej 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 90 #ifdef FD_DEBUG 91 int fdc_debug = 0; 92 #endif 93 94 enum fdc_state { 95 DEVIDLE = 0, 96 MOTORWAIT, 97 DOSEEK, 98 SEEKWAIT, 99 SEEKTIMEDOUT, 100 SEEKCOMPLETE, 101 DOIO, 102 IOCOMPLETE, 103 IOTIMEDOUT, 104 DORESET, 105 RESETCOMPLETE, 106 RESETTIMEDOUT, 107 DORECAL, 108 RECALWAIT, 109 RECALTIMEDOUT, 110 RECALCOMPLETE, 111 }; 112 113 /* software state, per controller */ 114 struct fdc_softc { 115 struct device sc_dev; /* boilerplate */ 116 caddr_t sc_reg; 117 struct fd_softc *sc_fd[4]; /* pointers to children */ 118 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 119 enum fdc_state sc_state; 120 int sc_flags; 121 #define FDC_82077 0x01 122 #define FDC_NEEDHEADSETTLE 0x02 123 #define FDC_EIS 0x04 124 int sc_errors; /* number of retries so far */ 125 int sc_overruns; /* number of DMA overruns */ 126 int sc_cfg; /* current configuration */ 127 int sc_fcr; /* current image of floppy ctrlr reg. */ 128 struct fdcio sc_io; 129 #define sc_reg_msr sc_io.fdcio_reg_msr 130 #define sc_reg_fifo sc_io.fdcio_reg_fifo 131 #define sc_reg_fcr sc_io.fdcio_reg_fcr 132 #define sc_reg_fvr sc_io.fdcio_reg_fvr 133 #define sc_reg_drs sc_io.fdcio_reg_msr 134 #define sc_istate sc_io.fdcio_istate 135 #define sc_data sc_io.fdcio_data 136 #define sc_tc sc_io.fdcio_tc 137 #define sc_nstat sc_io.fdcio_nstat 138 #define sc_status sc_io.fdcio_status 139 #define sc_intrcnt sc_io.fdcio_intrcnt 140 }; 141 142 /* controller driver configuration */ 143 int fdcmatch __P((struct device *, struct cfdata *, void *)); 144 void fdcattach __P((struct device *, struct device *, void *)); 145 146 struct cfattach fdc_ca = { 147 sizeof(struct fdc_softc), fdcmatch, fdcattach 148 }; 149 150 extern struct cfdriver fdc_cd; 151 152 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 153 154 /* 155 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 156 * we tell them apart. 157 */ 158 struct fd_type { 159 int sectrac; /* sectors per track */ 160 int heads; /* number of heads */ 161 int seccyl; /* sectors per cylinder */ 162 int secsize; /* size code for sectors */ 163 int datalen; /* data len when secsize = 0 */ 164 int steprate; /* step rate and head unload time */ 165 int gap1; /* gap len between sectors */ 166 int gap2; /* formatting gap */ 167 int tracks; /* total num of tracks */ 168 int size; /* size of disk in sectors */ 169 int step; /* steps per cylinder */ 170 int rate; /* transfer speed code */ 171 int fillbyte; /* format fill byte */ 172 int interleave; /* interleave factor (formatting) */ 173 char *name; 174 }; 175 176 /* The order of entries in the following table is important -- BEWARE! */ 177 struct fd_type fd_types[] = { 178 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 179 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 180 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 181 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 182 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 183 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 184 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 185 }; 186 187 /* software state, per disk (with up to 4 disks per ctlr) */ 188 struct fd_softc { 189 struct device sc_dv; /* generic device info */ 190 struct disk sc_dk; /* generic disk info */ 191 192 struct fd_type *sc_deftype; /* default type descriptor */ 193 struct fd_type *sc_type; /* current type descriptor */ 194 195 daddr_t sc_blkno; /* starting block number */ 196 int sc_bcount; /* byte count left */ 197 int sc_skip; /* bytes already transferred */ 198 int sc_nblks; /* number of blocks currently tranferring */ 199 int sc_nbytes; /* number of bytes currently tranferring */ 200 201 int sc_drive; /* physical unit number */ 202 int sc_flags; 203 #define FD_OPEN 0x01 /* it's open */ 204 #define FD_MOTOR 0x02 /* motor should be on */ 205 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 206 int sc_cylin; /* where we think the head is */ 207 int sc_opts; /* user-set options */ 208 209 void *sc_sdhook; /* shutdownhook cookie */ 210 211 TAILQ_ENTRY(fd_softc) sc_drivechain; 212 int sc_ops; /* I/O ops since last switch */ 213 struct buf_queue sc_q; /* pending I/O requests */ 214 int sc_active; /* number of active I/O operations */ 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 BUFQ_INIT(&fd->sc_q); 508 fd->sc_cylin = -1; 509 fd->sc_drive = drive; 510 fd->sc_deftype = type; 511 fdc->sc_fd[drive] = fd; 512 513 /* 514 * Initialize and attach the disk structure. 515 */ 516 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 517 fd->sc_dk.dk_driver = &fddkdriver; 518 disk_attach(&fd->sc_dk); 519 520 #ifdef sparc 521 /* 522 * We're told if we're the boot device in fdcattach(). 523 */ 524 if (fa->fa_bootpath) 525 fa->fa_bootpath->dev = &fd->sc_dv; 526 #endif 527 #define OUT_FDC(sc, c) { \ 528 if (out_fdc((sc), (c))) \ 529 printf("fdc: specify command failed.\n");\ 530 } 531 /* specify command */ 532 OUT_FDC(fdc, NE7CMD_SPECIFY); 533 OUT_FDC(fdc, type->steprate); 534 /* 535 * The '|1' in the following statement turns on the 'Non-DMA' bit 536 * specifier in the last byte of the SPECIFY command as described in the 537 * datasheet I have. This is necessary for the driver to work on the 538 * sun3x, because the system will not respond to the chip's requests 539 * for DMA; there is no hardware on the motherboard to support it. 540 * By enabling this bit, we will force the chip to interrupt when its 541 * FIFO is full, at which point the interrupt handler will empty it and 542 * continue. This is ``pseudo-DMA''. 543 * -J 544 */ 545 OUT_FDC(fdc, 6|1); /* XXX head load time == 6ms */ 546 #undef OUT_FDC 547 548 /* 549 * Establish a mountroot_hook anyway in case we booted 550 * with RB_ASKNAME and get selected as the boot device. 551 */ 552 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 553 554 /* Make sure the drive motor gets turned off at shutdown time. */ 555 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 556 557 /* XXX Need to do some more fiddling with sc_dk. */ 558 dk_establish(&fd->sc_dk, &fd->sc_dv); 559 } 560 561 __inline struct fd_type * 562 fd_dev_to_type(fd, dev) 563 struct fd_softc *fd; 564 dev_t dev; 565 { 566 int type = FDTYPE(dev); 567 568 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 569 return (NULL); 570 return (type ? &fd_types[type - 1] : fd->sc_deftype); 571 } 572 573 void 574 fdstrategy(bp) 575 register struct buf *bp; /* IO operation to perform */ 576 { 577 struct fd_softc *fd; 578 int unit = FDUNIT(bp->b_dev); 579 int sz; 580 int s; 581 582 /* Valid unit, controller, and request? */ 583 if (unit >= fd_cd.cd_ndevs || 584 (fd = fd_cd.cd_devs[unit]) == 0 || 585 bp->b_blkno < 0 || 586 ((bp->b_bcount % FDC_BSIZE) != 0 && 587 (bp->b_flags & B_FORMAT) == 0)) { 588 bp->b_error = EINVAL; 589 goto bad; 590 } 591 592 /* If it's a null transfer, return immediately. */ 593 if (bp->b_bcount == 0) 594 goto done; 595 596 sz = howmany(bp->b_bcount, FDC_BSIZE); 597 598 if (bp->b_blkno + sz > fd->sc_type->size) { 599 sz = fd->sc_type->size - bp->b_blkno; 600 if (sz == 0) { 601 /* If exactly at end of disk, return EOF. */ 602 bp->b_resid = bp->b_bcount; 603 goto done; 604 } 605 if (sz < 0) { 606 /* If past end of disk, return EINVAL. */ 607 bp->b_error = EINVAL; 608 goto bad; 609 } 610 /* Otherwise, truncate request. */ 611 bp->b_bcount = sz << DEV_BSHIFT; 612 } 613 614 bp->b_rawblkno = bp->b_blkno; 615 bp->b_cylinder = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 616 617 #ifdef FD_DEBUG 618 if (fdc_debug > 1) 619 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 620 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 621 #endif 622 623 /* Queue transfer on drive, activate drive and controller if idle. */ 624 s = splbio(); 625 disksort_cylinder(&fd->sc_q, bp); 626 untimeout(fd_motor_off, fd); /* a good idea */ 627 if (fd->sc_active == 0) 628 fdstart(fd); 629 #ifdef DIAGNOSTIC 630 else { 631 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 632 if (fdc->sc_state == DEVIDLE) { 633 printf("fdstrategy: controller inactive\n"); 634 fdcstart(fdc); 635 } 636 } 637 #endif 638 splx(s); 639 return; 640 641 bad: 642 bp->b_flags |= B_ERROR; 643 done: 644 /* Toss transfer; we're done early. */ 645 biodone(bp); 646 } 647 648 void 649 fdstart(fd) 650 struct fd_softc *fd; 651 { 652 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 653 int active = fdc->sc_drives.tqh_first != 0; 654 655 /* Link into controller queue. */ 656 fd->sc_active = 1; 657 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 658 659 /* If controller not already active, start it. */ 660 if (!active) 661 fdcstart(fdc); 662 } 663 664 void 665 fdfinish(fd, bp) 666 struct fd_softc *fd; 667 struct buf *bp; 668 { 669 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 670 671 /* 672 * Move this drive to the end of the queue to give others a `fair' 673 * chance. We only force a switch if N operations are completed while 674 * another drive is waiting to be serviced, since there is a long motor 675 * startup delay whenever we switch. 676 */ 677 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 678 fd->sc_ops = 0; 679 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 680 if (BUFQ_NEXT(bp) != NULL) { 681 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 682 } else 683 fd->sc_active = 0; 684 } 685 bp->b_resid = fd->sc_bcount; 686 fd->sc_skip = 0; 687 BUFQ_REMOVE(&fd->sc_q, bp); 688 689 biodone(bp); 690 /* turn off motor 5s from now */ 691 timeout(fd_motor_off, fd, 5 * hz); 692 fdc->sc_state = DEVIDLE; 693 } 694 695 void 696 fdc_reset(fdc) 697 struct fdc_softc *fdc; 698 { 699 fdc->sc_fcr = 0; 700 FCR_REG_SYNC(); 701 702 *fdc->sc_reg_drs = DRS_RESET; 703 delay(10); 704 *fdc->sc_reg_drs = 0; 705 706 #ifdef FD_DEBUG 707 if (fdc_debug) 708 printf("fdc reset\n"); 709 #endif 710 } 711 712 void 713 fd_set_motor(fdc) 714 struct fdc_softc *fdc; 715 { 716 struct fd_softc *fd; 717 int n; 718 719 int on = 0; 720 721 for (n = 0; n < 4; n++) 722 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 723 on = 1; 724 if (on) { 725 fdc->sc_fcr |= FCR_DSEL(0)|FCR_MTRON; /* XXX */ 726 } else { 727 fdc->sc_fcr &= ~(FCR_DSEL(0)|FCR_MTRON); /* XXX */ 728 } 729 FCR_REG_SYNC(); 730 } 731 732 void 733 fd_motor_off(arg) 734 void *arg; 735 { 736 struct fd_softc *fd = arg; 737 int s; 738 739 s = splbio(); 740 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 741 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 742 splx(s); 743 } 744 745 void 746 fd_motor_on(arg) 747 void *arg; 748 { 749 struct fd_softc *fd = arg; 750 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 751 int s; 752 753 s = splbio(); 754 fd->sc_flags &= ~FD_MOTOR_WAIT; 755 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 756 (void) fdcstate(fdc); 757 splx(s); 758 } 759 760 int 761 fdcresult(fdc) 762 struct fdc_softc *fdc; 763 { 764 u_char i; 765 int j = 100000, 766 n = 0; 767 768 for (; j; j--) { 769 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 770 if (i == NE7_RQM) 771 return (fdc->sc_nstat = n); 772 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 773 if (n >= sizeof(fdc->sc_status)) { 774 log(LOG_ERR, "fdcresult: overrun\n"); 775 return (-1); 776 } 777 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 778 } else 779 delay(10); 780 } 781 log(LOG_ERR, "fdcresult: timeout\n"); 782 return (fdc->sc_nstat = -1); 783 } 784 785 int 786 out_fdc(fdc, x) 787 struct fdc_softc *fdc; 788 u_char x; 789 { 790 int i = 100000; 791 792 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 793 delay(1); 794 if (i <= 0) 795 return (-1); 796 797 *fdc->sc_reg_fifo = x; 798 return (0); 799 } 800 801 int 802 fdopen(dev, flags, fmt, p) 803 dev_t dev; 804 int flags, fmt; 805 struct proc *p; 806 { 807 int unit, pmask; 808 struct fd_softc *fd; 809 struct fd_type *type; 810 811 unit = FDUNIT(dev); 812 if (unit >= fd_cd.cd_ndevs) 813 return (ENXIO); 814 fd = fd_cd.cd_devs[unit]; 815 if (fd == 0) 816 return (ENXIO); 817 type = fd_dev_to_type(fd, dev); 818 if (type == NULL) 819 return (ENXIO); 820 821 if ((fd->sc_flags & FD_OPEN) != 0 && 822 fd->sc_type != type) 823 return (EBUSY); 824 825 fd->sc_type = type; 826 fd->sc_cylin = -1; 827 fd->sc_flags |= FD_OPEN; 828 829 /* 830 * Only update the disklabel if we're not open anywhere else. 831 */ 832 if (fd->sc_dk.dk_openmask == 0) 833 fdgetdisklabel(dev); 834 835 pmask = (1 << DISKPART(dev)); 836 837 switch (fmt) { 838 case S_IFCHR: 839 fd->sc_dk.dk_copenmask |= pmask; 840 break; 841 842 case S_IFBLK: 843 fd->sc_dk.dk_bopenmask |= pmask; 844 break; 845 } 846 fd->sc_dk.dk_openmask = 847 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 848 849 return (0); 850 } 851 852 int 853 fdclose(dev, flags, fmt, p) 854 dev_t dev; 855 int flags, fmt; 856 struct proc *p; 857 { 858 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 859 int pmask = (1 << DISKPART(dev)); 860 861 fd->sc_flags &= ~FD_OPEN; 862 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 863 864 switch (fmt) { 865 case S_IFCHR: 866 fd->sc_dk.dk_copenmask &= ~pmask; 867 break; 868 869 case S_IFBLK: 870 fd->sc_dk.dk_bopenmask &= ~pmask; 871 break; 872 } 873 fd->sc_dk.dk_openmask = 874 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 875 876 return (0); 877 } 878 879 int 880 fdread(dev, uio, flag) 881 dev_t dev; 882 struct uio *uio; 883 int flag; 884 { 885 886 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 887 } 888 889 int 890 fdwrite(dev, uio, flag) 891 dev_t dev; 892 struct uio *uio; 893 int flag; 894 { 895 896 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 897 } 898 899 void 900 fdcstart(fdc) 901 struct fdc_softc *fdc; 902 { 903 904 #ifdef DIAGNOSTIC 905 /* only got here if controller's drive queue was inactive; should 906 be in idle state */ 907 if (fdc->sc_state != DEVIDLE) { 908 printf("fdcstart: not idle\n"); 909 return; 910 } 911 #endif 912 (void) fdcstate(fdc); 913 } 914 915 void 916 fdcstatus(dv, n, s) 917 struct device *dv; 918 int n; 919 char *s; 920 { 921 struct fdc_softc *fdc = (void *)dv->dv_parent; 922 char bits[64]; 923 #if 0 924 /* 925 * A 82072 seems to return <invalid command> on 926 * gratuitous Sense Interrupt commands. 927 */ 928 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 929 out_fdc(fdc, NE7CMD_SENSEI); 930 (void) fdcresult(fdc); 931 n = 2; 932 } 933 #endif 934 935 /* Just print last status */ 936 n = fdc->sc_nstat; 937 938 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 939 940 switch (n) { 941 case 0: 942 printf("\n"); 943 break; 944 case 2: 945 printf(" (st0 %s cyl %d)\n", 946 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 947 bits, sizeof(bits)), fdc->sc_status[1]); 948 break; 949 case 7: 950 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 951 NE7_ST0BITS, bits, sizeof(bits))); 952 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 953 NE7_ST1BITS, bits, sizeof(bits))); 954 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 955 NE7_ST2BITS, bits, sizeof(bits))); 956 printf(" cyl %d head %d sec %d)\n", 957 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 958 break; 959 #ifdef DIAGNOSTIC 960 default: 961 printf(" fdcstatus: weird size: %d\n", n); 962 break; 963 #endif 964 } 965 } 966 967 void 968 fdctimeout(arg) 969 void *arg; 970 { 971 struct fdc_softc *fdc = arg; 972 struct fd_softc *fd = fdc->sc_drives.tqh_first; 973 int s; 974 975 s = splbio(); 976 fdcstatus(&fd->sc_dv, 0, "timeout"); 977 978 if (BUFQ_FIRST(&fd->sc_q) != NULL) 979 fdc->sc_state++; 980 else 981 fdc->sc_state = DEVIDLE; 982 983 (void) fdcstate(fdc); 984 splx(s); 985 } 986 987 void 988 fdcpseudointr(arg) 989 void *arg; 990 { 991 struct fdc_softc *fdc = arg; 992 int s; 993 994 /* Just ensure it has the right spl. */ 995 s = splbio(); 996 (void) fdcstate(fdc); 997 splx(s); 998 } 999 1000 1001 /* 1002 * hardware interrupt entry point: must be converted to `fast' 1003 * (in-window) handler. 1004 */ 1005 int 1006 fdchwintr(arg) 1007 void *arg; 1008 { 1009 struct fdc_softc *fdc = arg; 1010 1011 /* 1012 * This code was reverse engineered from the SPARC bsd_fdintr.s. 1013 */ 1014 switch (fdc->sc_istate) { 1015 case ISTATE_IDLE: 1016 return (0); 1017 case ISTATE_SENSEI: 1018 out_fdc(fdc, NE7CMD_SENSEI); 1019 fdcresult(fdc); 1020 fdc->sc_istate = ISTATE_DONE; 1021 FD_SET_SWINTR(); 1022 return (1); 1023 case ISTATE_DMA: 1024 break; 1025 default: 1026 log(LOG_ERR, "fdc: stray hard interrupt.\n"); 1027 fdc->sc_fcr &= ~(FCR_DSEL(0)); /* Does this help? */ 1028 fdc->sc_istate = ISTATE_SPURIOUS; 1029 FD_SET_SWINTR(); 1030 return (1); 1031 } 1032 1033 for (;;) { 1034 register int msr; 1035 1036 msr = *fdc->sc_reg_msr; 1037 1038 if ((msr & NE7_RQM) == 0) 1039 break; 1040 1041 if ((msr & NE7_NDM) == 0) { 1042 fdcresult(fdc); 1043 fdc->sc_istate = ISTATE_DONE; 1044 FD_SET_SWINTR(); 1045 log(LOG_ERR, "fdc: overrun: tc = %d\n", fdc->sc_tc); 1046 break; 1047 } 1048 1049 if (msr & NE7_DIO) { 1050 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1051 } else { 1052 *fdc->sc_reg_fifo = *fdc->sc_data++; 1053 } 1054 if (--fdc->sc_tc == 0) { 1055 fdc->sc_fcr |= FCR_TC; 1056 FCR_REG_SYNC(); 1057 fdc->sc_istate = ISTATE_DONE; 1058 delay(10); 1059 fdc->sc_fcr &= ~FCR_TC; 1060 FCR_REG_SYNC(); 1061 fdcresult(fdc); 1062 FD_SET_SWINTR(); 1063 break; 1064 } 1065 } 1066 return (1); 1067 } 1068 1069 int 1070 fdcswintr(arg) 1071 void *arg; 1072 { 1073 struct fdc_softc *fdc = arg; 1074 int s; 1075 1076 if (fdc_softpend == 0) 1077 return (0); 1078 1079 isr_soft_clear(FDC_SOFTPRI); 1080 fdc_softpend = 0; 1081 1082 if (fdc->sc_istate != ISTATE_DONE) 1083 return (0); 1084 1085 fdc->sc_istate = ISTATE_IDLE; 1086 s = splbio(); 1087 fdcstate(fdc); 1088 splx(s); 1089 return (1); 1090 } 1091 1092 int 1093 fdcstate(fdc) 1094 struct fdc_softc *fdc; 1095 { 1096 #define st0 fdc->sc_status[0] 1097 #define st1 fdc->sc_status[1] 1098 #define cyl fdc->sc_status[1] 1099 #define OUT_FDC(fdc, c, s) \ 1100 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1101 1102 struct fd_softc *fd; 1103 struct buf *bp; 1104 int read, head, sec, nblks; 1105 struct fd_type *type; 1106 struct ne7_fd_formb *finfo = NULL; 1107 1108 1109 if (fdc->sc_istate != ISTATE_IDLE) { 1110 /* Trouble... */ 1111 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1112 fdc->sc_state, fdc->sc_istate); 1113 fdc->sc_istate = ISTATE_IDLE; 1114 if (fdc->sc_state == RESETCOMPLETE || 1115 fdc->sc_state == RESETTIMEDOUT) { 1116 panic("fdcintr: spurious interrupt can't be cleared"); 1117 } 1118 goto doreset; 1119 } 1120 1121 loop: 1122 /* Is there a drive for the controller to do a transfer with? */ 1123 fd = fdc->sc_drives.tqh_first; 1124 if (fd == NULL) { 1125 fdc->sc_state = DEVIDLE; 1126 return (0); 1127 } 1128 1129 /* Is there a transfer to this drive? If not, deactivate drive. */ 1130 bp = BUFQ_FIRST(&fd->sc_q); 1131 if (bp == NULL) { 1132 fd->sc_ops = 0; 1133 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1134 fd->sc_active = 0; 1135 goto loop; 1136 } 1137 1138 if (bp->b_flags & B_FORMAT) 1139 finfo = (struct ne7_fd_formb *)bp->b_data; 1140 1141 switch (fdc->sc_state) { 1142 case DEVIDLE: 1143 fdc->sc_errors = 0; 1144 fd->sc_skip = 0; 1145 fd->sc_bcount = bp->b_bcount; 1146 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1147 untimeout(fd_motor_off, fd); 1148 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1149 fdc->sc_state = MOTORWAIT; 1150 return (1); 1151 } 1152 if ((fd->sc_flags & FD_MOTOR) == 0) { 1153 /* Turn on the motor, being careful about pairing. */ 1154 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1155 if (ofd && ofd->sc_flags & FD_MOTOR) { 1156 untimeout(fd_motor_off, ofd); 1157 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1158 } 1159 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1160 fd_set_motor(fdc); 1161 fdc->sc_state = MOTORWAIT; 1162 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1163 /* Allow .25s for motor to stabilize. */ 1164 timeout(fd_motor_on, fd, hz / 4); 1165 } else { 1166 fd->sc_flags &= ~FD_MOTOR_WAIT; 1167 goto loop; 1168 } 1169 return (1); 1170 } 1171 /* Make sure the right drive is selected. */ 1172 fd_set_motor(fdc); 1173 1174 /*FALLTHROUGH*/ 1175 case DOSEEK: 1176 doseek: 1177 if ((fdc->sc_flags & FDC_EIS) && 1178 (bp->b_flags & B_FORMAT) == 0) { 1179 fd->sc_cylin = bp->b_cylinder; 1180 /* We use implied seek */ 1181 goto doio; 1182 } 1183 1184 if (fd->sc_cylin == bp->b_cylinder) 1185 goto doio; 1186 1187 /* specify command */ 1188 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1189 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1190 OUT_FDC(fdc, 6|1, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1191 1192 fdc->sc_istate = ISTATE_SENSEI; 1193 /* seek function */ 1194 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1195 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1196 OUT_FDC(fdc, bp->b_cylinder * fd->sc_type->step, SEEKTIMEDOUT); 1197 1198 fd->sc_cylin = -1; 1199 fdc->sc_state = SEEKWAIT; 1200 fdc->sc_nstat = 0; 1201 1202 fd->sc_dk.dk_seek++; 1203 disk_busy(&fd->sc_dk); 1204 1205 timeout(fdctimeout, fdc, 4 * hz); 1206 return (1); 1207 1208 case DOIO: 1209 doio: 1210 #ifdef NOTYET 1211 /* Check to see if the disk has changed */ 1212 if (fdc->sc_reg_dir & FDI_DCHG) { 1213 /* 1214 * The disk in the drive has changed since 1215 * the last transfer. We need to see if its geometry 1216 * has changed. 1217 */ 1218 } 1219 #endif /* NOTYET */ 1220 1221 if (finfo) 1222 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1223 (char *)finfo; 1224 type = fd->sc_type; 1225 sec = fd->sc_blkno % type->seccyl; 1226 nblks = type->seccyl - sec; 1227 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1228 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1229 fd->sc_nblks = nblks; 1230 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1231 head = sec / type->sectrac; 1232 sec -= head * type->sectrac; 1233 #ifdef DIAGNOSTIC 1234 {int block; 1235 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1236 if (block != fd->sc_blkno) { 1237 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1238 #ifdef DDB 1239 Debugger(); 1240 #endif 1241 }} 1242 #endif 1243 read = bp->b_flags & B_READ; 1244 1245 /* Setup for pseudo DMA */ 1246 fdc->sc_data = bp->b_data + fd->sc_skip; 1247 fdc->sc_tc = fd->sc_nbytes; 1248 1249 *fdc->sc_reg_drs = type->rate; 1250 #ifdef FD_DEBUG 1251 if (fdc_debug > 1) 1252 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1253 read ? "read" : "write", fd->sc_drive, 1254 fd->sc_cylin, head, sec, nblks); 1255 #endif 1256 fdc->sc_state = IOCOMPLETE; 1257 fdc->sc_istate = ISTATE_DMA; 1258 fdc->sc_nstat = 0; 1259 if (finfo) { 1260 /* formatting */ 1261 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1262 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1263 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1264 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1265 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1266 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1267 } else { 1268 if (read) 1269 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1270 else 1271 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1272 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1273 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1274 OUT_FDC(fdc, head, IOTIMEDOUT); 1275 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1276 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1277 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1278 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1279 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1280 } 1281 1282 disk_busy(&fd->sc_dk); 1283 1284 /* allow 2 seconds for operation */ 1285 timeout(fdctimeout, fdc, 2 * hz); 1286 return (1); /* will return later */ 1287 1288 case SEEKWAIT: 1289 untimeout(fdctimeout, fdc); 1290 fdc->sc_state = SEEKCOMPLETE; 1291 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1292 /* allow 1/50 second for heads to settle */ 1293 timeout(fdcpseudointr, fdc, hz / 50); 1294 return (1); /* will return later */ 1295 } 1296 /*FALLTHROUGH*/ 1297 case SEEKCOMPLETE: 1298 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1299 1300 /* Make sure seek really happened. */ 1301 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1302 cyl != bp->b_cylinder * fd->sc_type->step) { 1303 #ifdef FD_DEBUG 1304 if (fdc_debug) 1305 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1306 #endif 1307 fdcretry(fdc); 1308 goto loop; 1309 } 1310 fd->sc_cylin = bp->b_cylinder; 1311 goto doio; 1312 1313 case IOTIMEDOUT: 1314 fdc->sc_fcr |= FCR_TC; 1315 FCR_REG_SYNC(); 1316 delay(10); 1317 fdc->sc_fcr &= ~FCR_TC; 1318 FCR_REG_SYNC(); 1319 (void)fdcresult(fdc); 1320 /*FALLTHROUGH*/ 1321 case SEEKTIMEDOUT: 1322 case RECALTIMEDOUT: 1323 case RESETTIMEDOUT: 1324 fdcretry(fdc); 1325 goto loop; 1326 1327 case IOCOMPLETE: /* IO DONE, post-analyze */ 1328 untimeout(fdctimeout, fdc); 1329 1330 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1331 1332 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1333 #ifdef FD_DEBUG 1334 if (fdc_debug) { 1335 fdcstatus(&fd->sc_dv, 7, 1336 bp->b_flags & B_READ 1337 ? "read failed" : "write failed"); 1338 printf("blkno %d nblks %d tc %d\n", 1339 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1340 } 1341 #endif 1342 if (fdc->sc_nstat == 7 && 1343 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1344 1345 /* 1346 * Silently retry overruns if no other 1347 * error bit is set. Adjust threshold. 1348 */ 1349 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1350 if (thr < 15) { 1351 thr++; 1352 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1353 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1354 #ifdef FD_DEBUG 1355 if (fdc_debug) 1356 printf("fdc: %d -> threshold\n", thr); 1357 #endif 1358 fdconf(fdc); 1359 fdc->sc_overruns = 0; 1360 } 1361 if (++fdc->sc_overruns < 3) { 1362 fdc->sc_state = DOIO; 1363 goto loop; 1364 } 1365 } 1366 fdcretry(fdc); 1367 goto loop; 1368 } 1369 if (fdc->sc_errors) { 1370 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1371 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1372 printf("\n"); 1373 fdc->sc_errors = 0; 1374 } else { 1375 if (--fdc->sc_overruns < -20) { 1376 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1377 if (thr > 0) { 1378 thr--; 1379 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1380 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1381 #ifdef FD_DEBUG 1382 if (fdc_debug) 1383 printf("fdc: %d -> threshold\n", thr); 1384 #endif 1385 fdconf(fdc); 1386 } 1387 fdc->sc_overruns = 0; 1388 } 1389 } 1390 fd->sc_blkno += fd->sc_nblks; 1391 fd->sc_skip += fd->sc_nbytes; 1392 fd->sc_bcount -= fd->sc_nbytes; 1393 if (!finfo && fd->sc_bcount > 0) { 1394 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1395 goto doseek; 1396 } 1397 fdfinish(fd, bp); 1398 goto loop; 1399 1400 case DORESET: 1401 doreset: 1402 /* try a reset, keep motor on */ 1403 fd_set_motor(fdc); 1404 delay(100); 1405 fdc_reset(fdc); 1406 fdc->sc_nstat = 0; 1407 fdc->sc_istate = ISTATE_SENSEI; 1408 fdc->sc_state = RESETCOMPLETE; 1409 timeout(fdctimeout, fdc, hz / 2); 1410 return (1); /* will return later */ 1411 1412 case RESETCOMPLETE: 1413 untimeout(fdctimeout, fdc); 1414 fdconf(fdc); 1415 1416 /* fall through */ 1417 case DORECAL: 1418 fdc->sc_state = RECALWAIT; 1419 fdc->sc_istate = ISTATE_SENSEI; 1420 fdc->sc_nstat = 0; 1421 /* recalibrate function */ 1422 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1423 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1424 timeout(fdctimeout, fdc, 5 * hz); 1425 return (1); /* will return later */ 1426 1427 case RECALWAIT: 1428 untimeout(fdctimeout, fdc); 1429 fdc->sc_state = RECALCOMPLETE; 1430 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1431 /* allow 1/30 second for heads to settle */ 1432 timeout(fdcpseudointr, fdc, hz / 30); 1433 return (1); /* will return later */ 1434 } 1435 1436 case RECALCOMPLETE: 1437 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1438 #ifdef FD_DEBUG 1439 if (fdc_debug) 1440 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1441 #endif 1442 fdcretry(fdc); 1443 goto loop; 1444 } 1445 fd->sc_cylin = 0; 1446 goto doseek; 1447 1448 case MOTORWAIT: 1449 if (fd->sc_flags & FD_MOTOR_WAIT) 1450 return (1); /* time's not up yet */ 1451 goto doseek; 1452 1453 default: 1454 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1455 return (1); 1456 } 1457 #ifdef DIAGNOSTIC 1458 panic("fdcintr: impossible"); 1459 #endif 1460 #undef st0 1461 #undef st1 1462 #undef cyl 1463 } 1464 1465 void 1466 fdcretry(fdc) 1467 struct fdc_softc *fdc; 1468 { 1469 char bits[64]; 1470 struct fd_softc *fd; 1471 struct buf *bp; 1472 1473 fd = fdc->sc_drives.tqh_first; 1474 bp = BUFQ_FIRST(&fd->sc_q); 1475 1476 fdc->sc_overruns = 0; 1477 if (fd->sc_opts & FDOPT_NORETRY) 1478 goto fail; 1479 1480 switch (fdc->sc_errors) { 1481 case 0: 1482 /* try again */ 1483 fdc->sc_state = 1484 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1485 break; 1486 1487 case 1: case 2: case 3: 1488 /* didn't work; try recalibrating */ 1489 fdc->sc_state = DORECAL; 1490 break; 1491 1492 case 4: 1493 /* still no go; reset the bastard */ 1494 fdc->sc_state = DORESET; 1495 break; 1496 1497 default: 1498 fail: 1499 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1500 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1501 fd->sc_skip / FDC_BSIZE, 1502 (struct disklabel *)NULL); 1503 1504 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1505 NE7_ST0BITS, bits, sizeof(bits))); 1506 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1507 NE7_ST1BITS, bits, sizeof(bits))); 1508 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1509 NE7_ST2BITS, bits, sizeof(bits))); 1510 printf(" cyl %d head %d sec %d)\n", 1511 fdc->sc_status[3], fdc->sc_status[4], 1512 fdc->sc_status[5]); 1513 } 1514 1515 bp->b_flags |= B_ERROR; 1516 bp->b_error = EIO; 1517 fdfinish(fd, bp); 1518 } 1519 fdc->sc_errors++; 1520 } 1521 1522 int 1523 fdsize(dev) 1524 dev_t dev; 1525 { 1526 1527 /* Swapping to floppies would not make sense. */ 1528 return (-1); 1529 } 1530 1531 int 1532 fddump(dev, blkno, va, size) 1533 dev_t dev; 1534 daddr_t blkno; 1535 caddr_t va; 1536 size_t size; 1537 { 1538 1539 /* Not implemented. */ 1540 return (EINVAL); 1541 } 1542 1543 int 1544 fdioctl(dev, cmd, addr, flag, p) 1545 dev_t dev; 1546 u_long cmd; 1547 caddr_t addr; 1548 int flag; 1549 struct proc *p; 1550 { 1551 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1552 struct fdformat_parms *form_parms; 1553 struct fdformat_cmd *form_cmd; 1554 struct ne7_fd_formb fd_formb; 1555 int il[FD_MAX_NSEC + 1]; 1556 int i, j; 1557 int error; 1558 1559 switch (cmd) { 1560 case DIOCGDINFO: 1561 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1562 return 0; 1563 1564 case DIOCWLABEL: 1565 if ((flag & FWRITE) == 0) 1566 return EBADF; 1567 /* XXX do something */ 1568 return (0); 1569 1570 case DIOCWDINFO: 1571 if ((flag & FWRITE) == 0) 1572 return (EBADF); 1573 1574 error = setdisklabel(fd->sc_dk.dk_label, 1575 (struct disklabel *)addr, 0, 1576 fd->sc_dk.dk_cpulabel); 1577 if (error) 1578 return (error); 1579 1580 error = writedisklabel(dev, fdstrategy, 1581 fd->sc_dk.dk_label, 1582 fd->sc_dk.dk_cpulabel); 1583 return (error); 1584 1585 case DIOCLOCK: 1586 /* 1587 * Nothing to do here, really. 1588 */ 1589 return (0); 1590 1591 case DIOCEJECT: 1592 if (*(int *)addr == 0) { 1593 int part = DISKPART(dev); 1594 /* 1595 * Don't force eject: check that we are the only 1596 * partition open. If so, unlock it. 1597 */ 1598 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1599 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1600 fd->sc_dk.dk_openmask) { 1601 return (EBUSY); 1602 } 1603 } 1604 /* FALLTHROUGH */ 1605 case ODIOCEJECT: 1606 fd_do_eject((void *)fd->sc_dv.dv_parent, fd->sc_drive); 1607 return (0); 1608 1609 case FDIOCGETFORMAT: 1610 form_parms = (struct fdformat_parms *)addr; 1611 form_parms->fdformat_version = FDFORMAT_VERSION; 1612 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1613 form_parms->ncyl = fd->sc_type->tracks; 1614 form_parms->nspt = fd->sc_type->sectrac; 1615 form_parms->ntrk = fd->sc_type->heads; 1616 form_parms->stepspercyl = fd->sc_type->step; 1617 form_parms->gaplen = fd->sc_type->gap2; 1618 form_parms->fillbyte = fd->sc_type->fillbyte; 1619 form_parms->interleave = fd->sc_type->interleave; 1620 switch (fd->sc_type->rate) { 1621 case FDC_500KBPS: 1622 form_parms->xfer_rate = 500 * 1024; 1623 break; 1624 case FDC_300KBPS: 1625 form_parms->xfer_rate = 300 * 1024; 1626 break; 1627 case FDC_250KBPS: 1628 form_parms->xfer_rate = 250 * 1024; 1629 break; 1630 default: 1631 return (EINVAL); 1632 } 1633 return (0); 1634 1635 case FDIOCSETFORMAT: 1636 if ((flag & FWRITE) == 0) 1637 return (EBADF); /* must be opened for writing */ 1638 1639 form_parms = (struct fdformat_parms *)addr; 1640 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1641 return (EINVAL);/* wrong version of formatting prog */ 1642 1643 i = form_parms->nbps >> 7; 1644 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1645 i & ~(1 << (ffs(i)-1))) 1646 /* not a power-of-two multiple of 128 */ 1647 return (EINVAL); 1648 1649 switch (form_parms->xfer_rate) { 1650 case 500 * 1024: 1651 fd->sc_type->rate = FDC_500KBPS; 1652 break; 1653 case 300 * 1024: 1654 fd->sc_type->rate = FDC_300KBPS; 1655 break; 1656 case 250 * 1024: 1657 fd->sc_type->rate = FDC_250KBPS; 1658 break; 1659 default: 1660 return (EINVAL); 1661 } 1662 1663 if (form_parms->nspt > FD_MAX_NSEC || 1664 form_parms->fillbyte > 0xff || 1665 form_parms->interleave > 0xff) 1666 return EINVAL; 1667 fd->sc_type->sectrac = form_parms->nspt; 1668 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1669 return EINVAL; 1670 fd->sc_type->heads = form_parms->ntrk; 1671 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1672 fd->sc_type->secsize = ffs(i)-1; 1673 fd->sc_type->gap2 = form_parms->gaplen; 1674 fd->sc_type->tracks = form_parms->ncyl; 1675 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1676 form_parms->nbps / DEV_BSIZE; 1677 fd->sc_type->step = form_parms->stepspercyl; 1678 fd->sc_type->fillbyte = form_parms->fillbyte; 1679 fd->sc_type->interleave = form_parms->interleave; 1680 return (0); 1681 1682 case FDIOCFORMAT_TRACK: 1683 if((flag & FWRITE) == 0) 1684 /* must be opened for writing */ 1685 return (EBADF); 1686 form_cmd = (struct fdformat_cmd *)addr; 1687 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1688 /* wrong version of formatting prog */ 1689 return (EINVAL); 1690 1691 if (form_cmd->head >= fd->sc_type->heads || 1692 form_cmd->cylinder >= fd->sc_type->tracks) { 1693 return (EINVAL); 1694 } 1695 1696 fd_formb.head = form_cmd->head; 1697 fd_formb.cyl = form_cmd->cylinder; 1698 fd_formb.transfer_rate = fd->sc_type->rate; 1699 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1700 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1701 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1702 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1703 1704 bzero(il, sizeof(il)); 1705 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1706 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 1707 j++; 1708 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 1709 j += fd->sc_type->interleave; 1710 } 1711 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1712 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1713 fd_formb.fd_formb_headno(i) = form_cmd->head; 1714 fd_formb.fd_formb_secno(i) = il[i+1]; 1715 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1716 } 1717 1718 return fdformat(dev, &fd_formb, p); 1719 1720 case FDIOCGETOPTS: /* get drive options */ 1721 *(int *)addr = fd->sc_opts; 1722 return (0); 1723 1724 case FDIOCSETOPTS: /* set drive options */ 1725 fd->sc_opts = *(int *)addr; 1726 return (0); 1727 1728 #ifdef DEBUG 1729 case _IO('f', 100): 1730 { 1731 int i; 1732 struct fdc_softc *fdc = (struct fdc_softc *) 1733 fd->sc_dv.dv_parent; 1734 1735 out_fdc(fdc, NE7CMD_DUMPREG); 1736 fdcresult(fdc); 1737 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1738 for (i = 0; i < fdc->sc_nstat; i++) 1739 printf(" %x", fdc->sc_status[i]); 1740 printf(">\n"); 1741 } 1742 1743 return (0); 1744 case _IOW('f', 101, int): 1745 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1746 ~CFG_THRHLD_MASK; 1747 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1748 (*(int *)addr & CFG_THRHLD_MASK); 1749 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1750 return (0); 1751 case _IO('f', 102): 1752 { 1753 int i; 1754 struct fdc_softc *fdc = (struct fdc_softc *) 1755 fd->sc_dv.dv_parent; 1756 out_fdc(fdc, NE7CMD_SENSEI); 1757 fdcresult(fdc); 1758 printf("sensei(%d regs): <", fdc->sc_nstat); 1759 for (i=0; i< fdc->sc_nstat; i++) 1760 printf(" 0x%x", fdc->sc_status[i]); 1761 } 1762 printf(">\n"); 1763 return (0); 1764 #endif 1765 default: 1766 return (ENOTTY); 1767 } 1768 1769 #ifdef DIAGNOSTIC 1770 panic("fdioctl: impossible"); 1771 #endif 1772 } 1773 1774 int 1775 fdformat(dev, finfo, p) 1776 dev_t dev; 1777 struct ne7_fd_formb *finfo; 1778 struct proc *p; 1779 { 1780 int rv = 0, s; 1781 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1782 struct fd_type *type = fd->sc_type; 1783 struct buf *bp; 1784 1785 /* set up a buffer header for fdstrategy() */ 1786 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1787 if (bp == 0) 1788 return (ENOBUFS); 1789 1790 PHOLD(p); 1791 bzero((void *)bp, sizeof(struct buf)); 1792 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1793 bp->b_proc = p; 1794 bp->b_dev = dev; 1795 1796 /* 1797 * Calculate a fake blkno, so fdstrategy() would initiate a 1798 * seek to the requested cylinder. 1799 */ 1800 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1801 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1802 1803 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1804 bp->b_data = (caddr_t)finfo; 1805 1806 #ifdef FD_DEBUG 1807 if (fdc_debug) 1808 printf("fdformat: blkno %x count %ld\n", 1809 bp->b_blkno, bp->b_bcount); 1810 #endif 1811 1812 /* now do the format */ 1813 fdstrategy(bp); 1814 1815 /* ...and wait for it to complete */ 1816 s = splbio(); 1817 while (!(bp->b_flags & B_DONE)) { 1818 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1819 if (rv == EWOULDBLOCK) 1820 break; 1821 } 1822 splx(s); 1823 1824 if (rv == EWOULDBLOCK) { 1825 /* timed out */ 1826 rv = EIO; 1827 biodone(bp); 1828 } 1829 if (bp->b_flags & B_ERROR) { 1830 rv = bp->b_error; 1831 } 1832 PRELE(p); 1833 free(bp, M_TEMP); 1834 return (rv); 1835 } 1836 1837 void 1838 fdgetdisklabel(dev) 1839 dev_t dev; 1840 { 1841 int unit = FDUNIT(dev), i; 1842 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1843 struct disklabel *lp = fd->sc_dk.dk_label; 1844 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1845 1846 bzero(lp, sizeof(struct disklabel)); 1847 bzero(lp, sizeof(struct cpu_disklabel)); 1848 1849 lp->d_type = DTYPE_FLOPPY; 1850 lp->d_secsize = FDC_BSIZE; 1851 lp->d_secpercyl = fd->sc_type->seccyl; 1852 lp->d_nsectors = fd->sc_type->sectrac; 1853 lp->d_ncylinders = fd->sc_type->tracks; 1854 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1855 lp->d_rpm = 3600; /* XXX like it matters... */ 1856 1857 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1858 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1859 lp->d_interleave = 1; 1860 1861 lp->d_partitions[RAW_PART].p_offset = 0; 1862 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1863 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1864 lp->d_npartitions = RAW_PART + 1; 1865 1866 lp->d_magic = DISKMAGIC; 1867 lp->d_magic2 = DISKMAGIC; 1868 lp->d_checksum = dkcksum(lp); 1869 1870 /* 1871 * Call the generic disklabel extraction routine. If there's 1872 * not a label there, fake it. 1873 */ 1874 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1875 strncpy(lp->d_packname, "default label", 1876 sizeof(lp->d_packname)); 1877 /* 1878 * Reset the partition info; it might have gotten 1879 * trashed in readdisklabel(). 1880 * 1881 * XXX Why do we have to do this? readdisklabel() 1882 * should be safe... 1883 */ 1884 for (i = 0; i < MAXPARTITIONS; ++i) { 1885 lp->d_partitions[i].p_offset = 0; 1886 if (i == RAW_PART) { 1887 lp->d_partitions[i].p_size = 1888 lp->d_secpercyl * lp->d_ncylinders; 1889 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1890 } else { 1891 lp->d_partitions[i].p_size = 0; 1892 lp->d_partitions[i].p_fstype = FS_UNUSED; 1893 } 1894 } 1895 lp->d_npartitions = RAW_PART + 1; 1896 } 1897 } 1898 1899 void 1900 fd_do_eject(fdc, unit) 1901 struct fdc_softc *fdc; 1902 int unit; 1903 { 1904 fdc->sc_fcr |= FCR_DSEL(unit)|FCR_EJECT; 1905 FCR_REG_SYNC(); 1906 delay(10); 1907 fdc->sc_fcr &= ~(FCR_DSEL(unit)|FCR_EJECT); 1908 FCR_REG_SYNC(); 1909 } 1910 1911 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1912 int fd_read_md_image __P((size_t *, caddr_t *)); 1913 #endif 1914 1915 /* ARGSUSED */ 1916 void 1917 fd_mountroot_hook(dev) 1918 struct device *dev; 1919 { 1920 int c; 1921 1922 fd_do_eject(fdc_cd.cd_devs[0], 0); /* XXX - doesn't check ``dev'' */ 1923 printf("Insert filesystem floppy and press return."); 1924 for (;;) { 1925 c = cngetc(); 1926 if ((c == '\r') || (c == '\n')) { 1927 printf("\n"); 1928 break; 1929 } 1930 } 1931 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1932 { 1933 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1934 md_read_image = fd_read_md_image; 1935 } 1936 #endif 1937 } 1938 1939 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1940 1941 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 1942 1943 int 1944 fd_read_md_image(sizep, addrp) 1945 size_t *sizep; 1946 caddr_t *addrp; 1947 { 1948 struct buf buf, *bp = &buf; 1949 dev_t dev; 1950 off_t offset; 1951 caddr_t addr; 1952 1953 dev = makedev(54,0); /* XXX */ 1954 1955 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 1956 *addrp = addr; 1957 1958 if (fdopen(dev, 0, S_IFCHR, NULL)) 1959 panic("fd: mountroot: fdopen"); 1960 1961 offset = 0; 1962 1963 for (;;) { 1964 bp->b_dev = dev; 1965 bp->b_error = 0; 1966 bp->b_resid = 0; 1967 bp->b_proc = NULL; 1968 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 1969 bp->b_blkno = btodb(offset); 1970 bp->b_bcount = DEV_BSIZE; 1971 bp->b_data = addr; 1972 fdstrategy(bp); 1973 while ((bp->b_flags & B_DONE) == 0) { 1974 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 1975 } 1976 if (bp->b_error) 1977 panic("fd: mountroot: fdread error %d", bp->b_error); 1978 1979 if (bp->b_resid != 0) 1980 break; 1981 1982 addr += DEV_BSIZE; 1983 offset += DEV_BSIZE; 1984 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 1985 break; 1986 } 1987 (void)fdclose(dev, 0, S_IFCHR, NULL); 1988 *sizep = offset; 1989 fd_do_eject(fdc_cd.cd_devs[0], FDUNIT(dev)); /* XXX */ 1990 return (0); 1991 } 1992 #endif 1993