1 /* $NetBSD: fd.c,v 1.25 2001/09/05 14:03:48 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 5 * Copyright (c) 1995 Paul Kranenburg. 6 * Copyright (c) 1990 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * Don Ahn. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)fd.c 7.4 (Berkeley) 5/25/91 41 */ 42 #include "opt_ddb.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/callout.h> 47 #include <sys/kernel.h> 48 #include <sys/file.h> 49 #include <sys/ioctl.h> 50 #include <sys/device.h> 51 #include <sys/disklabel.h> 52 #include <sys/dkstat.h> 53 #include <sys/disk.h> 54 #include <sys/fdio.h> 55 #include <sys/buf.h> 56 #include <sys/malloc.h> 57 #include <sys/proc.h> 58 #include <sys/uio.h> 59 #include <sys/stat.h> 60 #include <sys/syslog.h> 61 #include <sys/queue.h> 62 #include <sys/conf.h> 63 64 #include <dev/cons.h> 65 66 #include <uvm/uvm_extern.h> 67 68 #include <machine/cpu.h> 69 #include <machine/autoconf.h> 70 71 #include <sun3/dev/fdreg.h> 72 #include <sun3/dev/fdvar.h> 73 74 /* 75 * Print a complaint when no fd children were specified 76 * in the config file. Better than a link error... 77 * 78 * XXX: Some folks say this driver should be split in two, 79 * but that seems pointless with ONLY one type of child. 80 * (Thankfully, no 3/80 boxes have floppy tapes!:) 81 */ 82 #include "fdc.h" 83 #if NFD == 0 84 #error "fdc but no fd?" 85 #endif 86 87 #define FDUNIT(dev) (minor(dev) / 8) 88 #define FDTYPE(dev) (minor(dev) % 8) 89 90 /* XXX misuse a flag to identify format operation */ 91 #define B_FORMAT B_XXX 92 93 #ifdef FD_DEBUG 94 int fdc_debug = 0; 95 #endif 96 97 enum fdc_state { 98 DEVIDLE = 0, 99 MOTORWAIT, 100 DOSEEK, 101 SEEKWAIT, 102 SEEKTIMEDOUT, 103 SEEKCOMPLETE, 104 DOIO, 105 IOCOMPLETE, 106 IOTIMEDOUT, 107 DORESET, 108 RESETCOMPLETE, 109 RESETTIMEDOUT, 110 DORECAL, 111 RECALWAIT, 112 RECALTIMEDOUT, 113 RECALCOMPLETE, 114 }; 115 116 /* software state, per controller */ 117 struct fdc_softc { 118 struct device sc_dev; /* boilerplate */ 119 caddr_t sc_reg; 120 121 struct callout sc_timo_ch; /* timeout callout */ 122 struct callout sc_intr_ch; /* pseudo-intr callout */ 123 124 struct fd_softc *sc_fd[4]; /* pointers to children */ 125 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 126 enum fdc_state sc_state; 127 int sc_flags; 128 #define FDC_82077 0x01 129 #define FDC_NEEDHEADSETTLE 0x02 130 #define FDC_EIS 0x04 131 int sc_errors; /* number of retries so far */ 132 int sc_overruns; /* number of DMA overruns */ 133 int sc_cfg; /* current configuration */ 134 int sc_fcr; /* current image of floppy ctrlr reg. */ 135 struct fdcio sc_io; 136 #define sc_reg_msr sc_io.fdcio_reg_msr 137 #define sc_reg_fifo sc_io.fdcio_reg_fifo 138 #define sc_reg_fcr sc_io.fdcio_reg_fcr 139 #define sc_reg_fvr sc_io.fdcio_reg_fvr 140 #define sc_reg_drs sc_io.fdcio_reg_msr 141 #define sc_istate sc_io.fdcio_istate 142 #define sc_data sc_io.fdcio_data 143 #define sc_tc sc_io.fdcio_tc 144 #define sc_nstat sc_io.fdcio_nstat 145 #define sc_status sc_io.fdcio_status 146 #define sc_intrcnt sc_io.fdcio_intrcnt 147 }; 148 149 /* controller driver configuration */ 150 int fdcmatch __P((struct device *, struct cfdata *, void *)); 151 void fdcattach __P((struct device *, struct device *, void *)); 152 153 struct cfattach fdc_ca = { 154 sizeof(struct fdc_softc), fdcmatch, fdcattach 155 }; 156 157 extern struct cfdriver fdc_cd; 158 159 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 160 161 /* 162 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 163 * we tell them apart. 164 */ 165 struct fd_type { 166 int sectrac; /* sectors per track */ 167 int heads; /* number of heads */ 168 int seccyl; /* sectors per cylinder */ 169 int secsize; /* size code for sectors */ 170 int datalen; /* data len when secsize = 0 */ 171 int steprate; /* step rate and head unload time */ 172 int gap1; /* gap len between sectors */ 173 int gap2; /* formatting gap */ 174 int tracks; /* total num of tracks */ 175 int size; /* size of disk in sectors */ 176 int step; /* steps per cylinder */ 177 int rate; /* transfer speed code */ 178 int fillbyte; /* format fill byte */ 179 int interleave; /* interleave factor (formatting) */ 180 char *name; 181 }; 182 183 /* The order of entries in the following table is important -- BEWARE! */ 184 struct fd_type fd_types[] = { 185 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 186 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 187 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 188 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 189 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 190 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 191 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 192 }; 193 194 /* software state, per disk (with up to 4 disks per ctlr) */ 195 struct fd_softc { 196 struct device sc_dv; /* generic device info */ 197 struct disk sc_dk; /* generic disk info */ 198 199 struct fd_type *sc_deftype; /* default type descriptor */ 200 struct fd_type *sc_type; /* current type descriptor */ 201 202 struct callout sc_motoron_ch; 203 struct callout sc_motoroff_ch; 204 205 daddr_t sc_blkno; /* starting block number */ 206 int sc_bcount; /* byte count left */ 207 int sc_skip; /* bytes already transferred */ 208 int sc_nblks; /* number of blocks currently transferring */ 209 int sc_nbytes; /* number of bytes currently transferring */ 210 211 int sc_drive; /* physical unit number */ 212 int sc_flags; 213 #define FD_OPEN 0x01 /* it's open */ 214 #define FD_MOTOR 0x02 /* motor should be on */ 215 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 216 int sc_cylin; /* where we think the head is */ 217 int sc_opts; /* user-set options */ 218 219 void *sc_sdhook; /* shutdownhook cookie */ 220 221 TAILQ_ENTRY(fd_softc) sc_drivechain; 222 int sc_ops; /* I/O ops since last switch */ 223 struct buf_queue sc_q; /* pending I/O requests */ 224 int sc_active; /* number of active I/O operations */ 225 }; 226 227 bdev_decl(fd); 228 cdev_decl(fd); 229 230 /* floppy driver configuration */ 231 int fdmatch __P((struct device *, struct cfdata *, void *)); 232 void fdattach __P((struct device *, struct device *, void *)); 233 234 struct cfattach fd_ca = { 235 sizeof(struct fd_softc), fdmatch, fdattach 236 }; 237 238 extern struct cfdriver fd_cd; 239 240 void fdgetdisklabel __P((dev_t)); 241 int fd_get_parms __P((struct fd_softc *)); 242 void fdstrategy __P((struct buf *)); 243 void fdstart __P((struct fd_softc *)); 244 int fdprint __P((void *, const char *)); 245 246 struct dkdriver fddkdriver = { fdstrategy }; 247 248 struct fd_type *fd_nvtotype __P((char *, int, int)); 249 void fd_set_motor __P((struct fdc_softc *fdc)); 250 void fd_motor_off __P((void *arg)); 251 void fd_motor_on __P((void *arg)); 252 int fdcresult __P((struct fdc_softc *fdc)); 253 int out_fdc __P((struct fdc_softc *fdc, u_char x)); 254 void fdcstart __P((struct fdc_softc *fdc)); 255 void fdcstatus __P((struct device *dv, int n, char *s)); 256 void fdc_reset __P((struct fdc_softc *fdc)); 257 void fdctimeout __P((void *arg)); 258 void fdcpseudointr __P((void *arg)); 259 int fdchwintr __P((void *)); 260 int fdcswintr __P((void *)); 261 int fdcstate __P((struct fdc_softc *)); 262 void fdcretry __P((struct fdc_softc *fdc)); 263 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 264 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 265 void fd_do_eject __P((struct fdc_softc *, int)); 266 void fd_mountroot_hook __P((struct device *)); 267 static void fdconf __P((struct fdc_softc *)); 268 269 static int fdc_softpend = 0; 270 #ifndef FDC_SOFTPRI 271 #define FDC_SOFTPRI 2 272 #endif 273 #define FD_SET_SWINTR() { fdc_softpend = 1; isr_soft_request(FDC_SOFTPRI); } 274 275 /* 276 * The Floppy Control Register on the sun3x, not to be confused with the 277 * Floppy ControllER Registers that this driver mostly insterfaces with, 278 * controls some of the auxillary functions of the floppy drive. These 279 * include asserting the floppy eject and terminal data count (or TC) pins 280 * of the floppy drive and controller chip respectively. 281 * 282 * Often it is necessary to toggle individual bits within this register 283 * while keeping the others untouched. However, the register does not 284 * present its latched data to the processor when read. This prevents the 285 * use of a read-modify-write cycle that would normally be used to modify 286 * individual bits. To get around this we must keep a copy of register's 287 * current value and always insure that when we wish to modify the register, 288 * we actually modify the copy and synchronize the register to it. 289 */ 290 #define FCR_REG_SYNC() (*fdc->sc_reg_fcr = fdc->sc_fcr) 291 292 int 293 fdcmatch(parent, match, aux) 294 struct device *parent; 295 struct cfdata *match; 296 void *aux; 297 { 298 struct confargs *ca = aux; 299 300 if (bus_peek(ca->ca_bustype, ca->ca_paddr, sizeof(u_char)) == -1) 301 return (0); 302 303 return (1); 304 } 305 306 /* 307 * Arguments passed between fdcattach and fdprobe. 308 */ 309 struct fdc_attach_args { 310 int fa_drive; 311 struct bootpath *fa_bootpath; 312 struct fd_type *fa_deftype; 313 }; 314 315 /* 316 * Print the location of a disk drive (called just before attaching the 317 * the drive). If `fdc' is not NULL, the drive was found but was not 318 * in the system config file; print the drive name as well. 319 * Return QUIET (config_find ignores this if the device was configured) to 320 * avoid printing `fdN not configured' messages. 321 */ 322 int 323 fdprint(aux, fdc) 324 void *aux; 325 const char *fdc; 326 { 327 struct fdc_attach_args *fa = aux; 328 329 if (!fdc) 330 printf(" drive %d", fa->fa_drive); 331 return (QUIET); 332 } 333 334 static void 335 fdconf(fdc) 336 struct fdc_softc *fdc; 337 { 338 int vroom; 339 340 if (out_fdc(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 341 return; 342 343 /* 344 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 345 * the PROM thinks is appropriate. 346 */ 347 if ((vroom = fdc->sc_status[7]) == 0) 348 vroom = 0x64; 349 350 /* Configure controller to use FIFO and Implied Seek */ 351 out_fdc(fdc, NE7CMD_CFG); 352 out_fdc(fdc, vroom); 353 out_fdc(fdc, fdc->sc_cfg); 354 out_fdc(fdc, 0); /* PRETRK */ 355 /* No result phase */ 356 } 357 358 void 359 fdcattach(parent, self, aux) 360 struct device *parent, *self; 361 void *aux; 362 { 363 struct confargs *ca = aux; 364 struct fdc_softc *fdc = (void *)self; 365 struct fdc_attach_args fa; 366 int pri, vec; 367 char code; 368 369 fdc->sc_reg = (caddr_t)bus_mapin(ca->ca_bustype, ca->ca_paddr, 370 sizeof(union fdreg)); 371 372 callout_init(&fdc->sc_timo_ch); 373 callout_init(&fdc->sc_intr_ch); 374 375 fdc->sc_state = DEVIDLE; 376 fdc->sc_istate = ISTATE_IDLE; 377 fdc->sc_flags |= FDC_EIS; 378 TAILQ_INIT(&fdc->sc_drives); 379 380 /* Assume a 82072 */ 381 code = '2'; 382 383 if (code == '7') { 384 panic("no 82077 fdc in this kernel"); 385 /* NOTREACHED */ 386 } else { 387 fdc->sc_reg_msr = &((struct fdreg_72 *)fdc->sc_reg)->fd_msr; 388 fdc->sc_reg_fifo = &((struct fdreg_72 *)fdc->sc_reg)->fd_fifo; 389 390 fdc->sc_reg_fcr = ((volatile u_int8_t *) fdc->sc_reg) 391 + FDC_FCR_OFFSET; 392 fdc->sc_reg_fvr = ((volatile u_int8_t *) fdc->sc_reg) 393 + FDC_FVR_OFFSET; 394 } 395 396 isr_add_autovect(fdcswintr, fdc, FDC_SOFTPRI); 397 pri = ca->ca_intpri; 398 vec = ca->ca_intvec; 399 if (vec == -1) { 400 /* Tell the FDC to fake an autovector. */ 401 vec = 0x18 + pri; /* XXX */ 402 isr_add_autovect(fdchwintr, fdc, pri); 403 } else { 404 /* An OBIO bus with vectors? Weird exception. */ 405 isr_add_vectored(fdchwintr, fdc, pri, vec); 406 } 407 *fdc->sc_reg_fvr = vec; /* Program controller w/ interrupt vector */ 408 409 printf(": (softpri %d) chip 8207%c\n", FDC_SOFTPRI, code); 410 411 #ifdef FD_DEBUG 412 if (out_fdc(fdc, NE7CMD_VERSION) == 0 && 413 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 414 if (fdc_debug) 415 printf("[version cmd]"); 416 } 417 #endif 418 419 fdc_reset(fdc); 420 /* 421 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 422 * Note: CFG_EFIFO is active-low, initial threshold value: 8 423 */ 424 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 425 fdconf(fdc); 426 427 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 428 fdc->sc_dev.dv_xname, "intr"); 429 430 /* physical limit: four drives per controller. */ 431 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 432 fa.fa_deftype = NULL; /* unknown */ 433 fa.fa_deftype = &fd_types[0]; /* XXX */ 434 (void)config_found(self, (void *)&fa, fdprint); 435 } 436 } 437 438 int 439 fdmatch(parent, match, aux) 440 struct device *parent; 441 struct cfdata *match; 442 void *aux; 443 { 444 struct fdc_softc *fdc = (void *)parent; 445 struct fdc_attach_args *fa = aux; 446 int drive = fa->fa_drive; 447 int n, ok; 448 449 if (drive > 0) 450 /* XXX - for now, punt > 1 drives */ 451 return (0); 452 453 /* select drive and turn on motor */ 454 fdc->sc_fcr |= FCR_DSEL(drive) | FCR_MTRON; 455 FCR_REG_SYNC(); 456 /* wait for motor to spin up */ 457 delay(250000); 458 459 fdc->sc_nstat = 0; 460 out_fdc(fdc, NE7CMD_RECAL); 461 out_fdc(fdc, drive); 462 /* wait for recalibrate */ 463 for (n = 0; n < 10000; n++) { 464 delay(1000); 465 if ((*fdc->sc_reg_msr & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 466 /* wait a bit longer till device *really* is ready */ 467 delay(100000); 468 if (out_fdc(fdc, NE7CMD_SENSEI)) 469 break; 470 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 471 /* 472 * Got `invalid command'; we interpret it 473 * to mean that the re-calibrate hasn't in 474 * fact finished yet 475 */ 476 continue; 477 break; 478 } 479 } 480 n = fdc->sc_nstat; 481 #ifdef FD_DEBUG 482 if (fdc_debug) { 483 int i; 484 printf("fdprobe: %d stati:", n); 485 for (i = 0; i < n; i++) 486 printf(" %x", fdc->sc_status[i]); 487 printf("\n"); 488 } 489 #endif 490 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 491 492 /* turn off motor */ 493 fdc->sc_fcr &= ~(FCR_DSEL(drive)|FCR_MTRON); 494 FCR_REG_SYNC(); 495 496 return (ok); 497 } 498 499 /* 500 * Controller is working, and drive responded. Attach it. 501 */ 502 void 503 fdattach(parent, self, aux) 504 struct device *parent, *self; 505 void *aux; 506 { 507 struct fdc_softc *fdc = (void *)parent; 508 struct fd_softc *fd = (void *)self; 509 struct fdc_attach_args *fa = aux; 510 struct fd_type *type = fa->fa_deftype; 511 int drive = fa->fa_drive; 512 513 callout_init(&fd->sc_motoron_ch); 514 callout_init(&fd->sc_motoroff_ch); 515 516 /* XXX Allow `flags' to override device type? */ 517 518 if (type) 519 printf(": %s %d cyl, %d head, %d sec\n", type->name, 520 type->tracks, type->heads, type->sectrac); 521 else 522 printf(": density unknown\n"); 523 524 BUFQ_INIT(&fd->sc_q); 525 fd->sc_cylin = -1; 526 fd->sc_drive = drive; 527 fd->sc_deftype = type; 528 fdc->sc_fd[drive] = fd; 529 530 /* 531 * Initialize and attach the disk structure. 532 */ 533 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 534 fd->sc_dk.dk_driver = &fddkdriver; 535 disk_attach(&fd->sc_dk); 536 537 #ifdef sparc 538 /* 539 * We're told if we're the boot device in fdcattach(). 540 */ 541 if (fa->fa_bootpath) 542 fa->fa_bootpath->dev = &fd->sc_dv; 543 #endif 544 #define OUT_FDC(sc, c) { \ 545 if (out_fdc((sc), (c))) \ 546 printf("fdc: specify command failed.\n");\ 547 } 548 /* specify command */ 549 OUT_FDC(fdc, NE7CMD_SPECIFY); 550 OUT_FDC(fdc, type->steprate); 551 /* 552 * The '|1' in the following statement turns on the 'Non-DMA' bit 553 * specifier in the last byte of the SPECIFY command as described in the 554 * datasheet I have. This is necessary for the driver to work on the 555 * sun3x, because the system will not respond to the chip's requests 556 * for DMA; there is no hardware on the motherboard to support it. 557 * By enabling this bit, we will force the chip to interrupt when its 558 * FIFO is full, at which point the interrupt handler will empty it and 559 * continue. This is ``pseudo-DMA''. 560 * -J 561 */ 562 OUT_FDC(fdc, 6|1); /* XXX head load time == 6ms */ 563 #undef OUT_FDC 564 565 /* 566 * Establish a mountroot_hook anyway in case we booted 567 * with RB_ASKNAME and get selected as the boot device. 568 */ 569 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 570 571 /* Make sure the drive motor gets turned off at shutdown time. */ 572 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 573 } 574 575 __inline struct fd_type * 576 fd_dev_to_type(fd, dev) 577 struct fd_softc *fd; 578 dev_t dev; 579 { 580 int type = FDTYPE(dev); 581 582 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 583 return (NULL); 584 return (type ? &fd_types[type - 1] : fd->sc_deftype); 585 } 586 587 void 588 fdstrategy(bp) 589 struct buf *bp; /* IO operation to perform */ 590 { 591 struct fd_softc *fd; 592 int unit = FDUNIT(bp->b_dev); 593 int sz; 594 int s; 595 596 /* Valid unit, controller, and request? */ 597 if (unit >= fd_cd.cd_ndevs || 598 (fd = fd_cd.cd_devs[unit]) == 0 || 599 bp->b_blkno < 0 || 600 ((bp->b_bcount % FDC_BSIZE) != 0 && 601 (bp->b_flags & B_FORMAT) == 0)) { 602 bp->b_error = EINVAL; 603 goto bad; 604 } 605 606 /* If it's a null transfer, return immediately. */ 607 if (bp->b_bcount == 0) 608 goto done; 609 610 sz = howmany(bp->b_bcount, FDC_BSIZE); 611 612 if (bp->b_blkno + sz > fd->sc_type->size) { 613 sz = fd->sc_type->size - bp->b_blkno; 614 if (sz == 0) { 615 /* If exactly at end of disk, return EOF. */ 616 bp->b_resid = bp->b_bcount; 617 goto done; 618 } 619 if (sz < 0) { 620 /* If past end of disk, return EINVAL. */ 621 bp->b_error = EINVAL; 622 goto bad; 623 } 624 /* Otherwise, truncate request. */ 625 bp->b_bcount = sz << DEV_BSHIFT; 626 } 627 628 bp->b_rawblkno = bp->b_blkno; 629 bp->b_cylinder = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 630 631 #ifdef FD_DEBUG 632 if (fdc_debug > 1) 633 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 634 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 635 #endif 636 637 /* Queue transfer on drive, activate drive and controller if idle. */ 638 s = splbio(); 639 disksort_cylinder(&fd->sc_q, bp); 640 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 641 if (fd->sc_active == 0) 642 fdstart(fd); 643 #ifdef DIAGNOSTIC 644 else { 645 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 646 if (fdc->sc_state == DEVIDLE) { 647 printf("fdstrategy: controller inactive\n"); 648 fdcstart(fdc); 649 } 650 } 651 #endif 652 splx(s); 653 return; 654 655 bad: 656 bp->b_flags |= B_ERROR; 657 done: 658 /* Toss transfer; we're done early. */ 659 biodone(bp); 660 } 661 662 void 663 fdstart(fd) 664 struct fd_softc *fd; 665 { 666 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 667 int active = fdc->sc_drives.tqh_first != 0; 668 669 /* Link into controller queue. */ 670 fd->sc_active = 1; 671 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 672 673 /* If controller not already active, start it. */ 674 if (!active) 675 fdcstart(fdc); 676 } 677 678 void 679 fdfinish(fd, bp) 680 struct fd_softc *fd; 681 struct buf *bp; 682 { 683 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 684 685 /* 686 * Move this drive to the end of the queue to give others a `fair' 687 * chance. We only force a switch if N operations are completed while 688 * another drive is waiting to be serviced, since there is a long motor 689 * startup delay whenever we switch. 690 */ 691 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 692 fd->sc_ops = 0; 693 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 694 if (BUFQ_NEXT(bp) != NULL) { 695 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 696 } else 697 fd->sc_active = 0; 698 } 699 bp->b_resid = fd->sc_bcount; 700 fd->sc_skip = 0; 701 BUFQ_REMOVE(&fd->sc_q, bp); 702 703 biodone(bp); 704 /* turn off motor 5s from now */ 705 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 706 fdc->sc_state = DEVIDLE; 707 } 708 709 void 710 fdc_reset(fdc) 711 struct fdc_softc *fdc; 712 { 713 fdc->sc_fcr = 0; 714 FCR_REG_SYNC(); 715 716 *fdc->sc_reg_drs = DRS_RESET; 717 delay(10); 718 *fdc->sc_reg_drs = 0; 719 720 #ifdef FD_DEBUG 721 if (fdc_debug) 722 printf("fdc reset\n"); 723 #endif 724 } 725 726 void 727 fd_set_motor(fdc) 728 struct fdc_softc *fdc; 729 { 730 struct fd_softc *fd; 731 int n; 732 733 int on = 0; 734 735 for (n = 0; n < 4; n++) 736 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 737 on = 1; 738 if (on) { 739 fdc->sc_fcr |= FCR_DSEL(0)|FCR_MTRON; /* XXX */ 740 } else { 741 fdc->sc_fcr &= ~(FCR_DSEL(0)|FCR_MTRON); /* XXX */ 742 } 743 FCR_REG_SYNC(); 744 } 745 746 void 747 fd_motor_off(arg) 748 void *arg; 749 { 750 struct fd_softc *fd = arg; 751 int s; 752 753 s = splbio(); 754 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 755 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 756 splx(s); 757 } 758 759 void 760 fd_motor_on(arg) 761 void *arg; 762 { 763 struct fd_softc *fd = arg; 764 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 765 int s; 766 767 s = splbio(); 768 fd->sc_flags &= ~FD_MOTOR_WAIT; 769 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 770 (void) fdcstate(fdc); 771 splx(s); 772 } 773 774 int 775 fdcresult(fdc) 776 struct fdc_softc *fdc; 777 { 778 u_char i; 779 int j = 100000, 780 n = 0; 781 782 for (; j; j--) { 783 i = *fdc->sc_reg_msr & (NE7_DIO | NE7_RQM | NE7_CB); 784 if (i == NE7_RQM) 785 return (fdc->sc_nstat = n); 786 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 787 if (n >= sizeof(fdc->sc_status)) { 788 log(LOG_ERR, "fdcresult: overrun\n"); 789 return (-1); 790 } 791 fdc->sc_status[n++] = *fdc->sc_reg_fifo; 792 } else 793 delay(10); 794 } 795 log(LOG_ERR, "fdcresult: timeout\n"); 796 return (fdc->sc_nstat = -1); 797 } 798 799 int 800 out_fdc(fdc, x) 801 struct fdc_softc *fdc; 802 u_char x; 803 { 804 int i = 100000; 805 806 while (((*fdc->sc_reg_msr & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) 807 delay(1); 808 if (i <= 0) 809 return (-1); 810 811 *fdc->sc_reg_fifo = x; 812 return (0); 813 } 814 815 int 816 fdopen(dev, flags, fmt, p) 817 dev_t dev; 818 int flags, fmt; 819 struct proc *p; 820 { 821 int unit, pmask; 822 struct fd_softc *fd; 823 struct fd_type *type; 824 825 unit = FDUNIT(dev); 826 if (unit >= fd_cd.cd_ndevs) 827 return (ENXIO); 828 fd = fd_cd.cd_devs[unit]; 829 if (fd == 0) 830 return (ENXIO); 831 type = fd_dev_to_type(fd, dev); 832 if (type == NULL) 833 return (ENXIO); 834 835 if ((fd->sc_flags & FD_OPEN) != 0 && 836 fd->sc_type != type) 837 return (EBUSY); 838 839 fd->sc_type = type; 840 fd->sc_cylin = -1; 841 fd->sc_flags |= FD_OPEN; 842 843 /* 844 * Only update the disklabel if we're not open anywhere else. 845 */ 846 if (fd->sc_dk.dk_openmask == 0) 847 fdgetdisklabel(dev); 848 849 pmask = (1 << DISKPART(dev)); 850 851 switch (fmt) { 852 case S_IFCHR: 853 fd->sc_dk.dk_copenmask |= pmask; 854 break; 855 856 case S_IFBLK: 857 fd->sc_dk.dk_bopenmask |= pmask; 858 break; 859 } 860 fd->sc_dk.dk_openmask = 861 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 862 863 return (0); 864 } 865 866 int 867 fdclose(dev, flags, fmt, p) 868 dev_t dev; 869 int flags, fmt; 870 struct proc *p; 871 { 872 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 873 int pmask = (1 << DISKPART(dev)); 874 875 fd->sc_flags &= ~FD_OPEN; 876 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 877 878 switch (fmt) { 879 case S_IFCHR: 880 fd->sc_dk.dk_copenmask &= ~pmask; 881 break; 882 883 case S_IFBLK: 884 fd->sc_dk.dk_bopenmask &= ~pmask; 885 break; 886 } 887 fd->sc_dk.dk_openmask = 888 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 889 890 return (0); 891 } 892 893 int 894 fdread(dev, uio, flag) 895 dev_t dev; 896 struct uio *uio; 897 int flag; 898 { 899 900 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 901 } 902 903 int 904 fdwrite(dev, uio, flag) 905 dev_t dev; 906 struct uio *uio; 907 int flag; 908 { 909 910 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 911 } 912 913 void 914 fdcstart(fdc) 915 struct fdc_softc *fdc; 916 { 917 918 #ifdef DIAGNOSTIC 919 /* only got here if controller's drive queue was inactive; should 920 be in idle state */ 921 if (fdc->sc_state != DEVIDLE) { 922 printf("fdcstart: not idle\n"); 923 return; 924 } 925 #endif 926 (void) fdcstate(fdc); 927 } 928 929 void 930 fdcstatus(dv, n, s) 931 struct device *dv; 932 int n; 933 char *s; 934 { 935 struct fdc_softc *fdc = (void *)dv->dv_parent; 936 char bits[64]; 937 #if 0 938 /* 939 * A 82072 seems to return <invalid command> on 940 * gratuitous Sense Interrupt commands. 941 */ 942 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 943 out_fdc(fdc, NE7CMD_SENSEI); 944 (void) fdcresult(fdc); 945 n = 2; 946 } 947 #endif 948 949 /* Just print last status */ 950 n = fdc->sc_nstat; 951 952 printf("%s: %s: state %d", dv->dv_xname, s, fdc->sc_state); 953 954 switch (n) { 955 case 0: 956 printf("\n"); 957 break; 958 case 2: 959 printf(" (st0 %s cyl %d)\n", 960 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 961 bits, sizeof(bits)), fdc->sc_status[1]); 962 break; 963 case 7: 964 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 965 NE7_ST0BITS, bits, sizeof(bits))); 966 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 967 NE7_ST1BITS, bits, sizeof(bits))); 968 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 969 NE7_ST2BITS, bits, sizeof(bits))); 970 printf(" cyl %d head %d sec %d)\n", 971 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 972 break; 973 #ifdef DIAGNOSTIC 974 default: 975 printf(" fdcstatus: weird size: %d\n", n); 976 break; 977 #endif 978 } 979 } 980 981 void 982 fdctimeout(arg) 983 void *arg; 984 { 985 struct fdc_softc *fdc = arg; 986 struct fd_softc *fd = fdc->sc_drives.tqh_first; 987 int s; 988 989 s = splbio(); 990 fdcstatus(&fd->sc_dv, 0, "timeout"); 991 992 if (BUFQ_FIRST(&fd->sc_q) != NULL) 993 fdc->sc_state++; 994 else 995 fdc->sc_state = DEVIDLE; 996 997 (void) fdcstate(fdc); 998 splx(s); 999 } 1000 1001 void 1002 fdcpseudointr(arg) 1003 void *arg; 1004 { 1005 struct fdc_softc *fdc = arg; 1006 int s; 1007 1008 /* Just ensure it has the right spl. */ 1009 s = splbio(); 1010 (void) fdcstate(fdc); 1011 splx(s); 1012 } 1013 1014 1015 /* 1016 * hardware interrupt entry point: must be converted to `fast' 1017 * (in-window) handler. 1018 */ 1019 int 1020 fdchwintr(arg) 1021 void *arg; 1022 { 1023 struct fdc_softc *fdc = arg; 1024 1025 /* 1026 * This code was reverse engineered from the SPARC bsd_fdintr.s. 1027 */ 1028 switch (fdc->sc_istate) { 1029 case ISTATE_IDLE: 1030 return (0); 1031 case ISTATE_SENSEI: 1032 out_fdc(fdc, NE7CMD_SENSEI); 1033 fdcresult(fdc); 1034 fdc->sc_istate = ISTATE_DONE; 1035 FD_SET_SWINTR(); 1036 return (1); 1037 case ISTATE_DMA: 1038 break; 1039 default: 1040 log(LOG_ERR, "fdc: stray hard interrupt.\n"); 1041 fdc->sc_fcr &= ~(FCR_DSEL(0)); /* Does this help? */ 1042 fdc->sc_istate = ISTATE_SPURIOUS; 1043 FD_SET_SWINTR(); 1044 return (1); 1045 } 1046 1047 for (;;) { 1048 int msr; 1049 1050 msr = *fdc->sc_reg_msr; 1051 1052 if ((msr & NE7_RQM) == 0) 1053 break; 1054 1055 if ((msr & NE7_NDM) == 0) { 1056 fdcresult(fdc); 1057 fdc->sc_istate = ISTATE_DONE; 1058 FD_SET_SWINTR(); 1059 log(LOG_ERR, "fdc: overrun: tc = %d\n", fdc->sc_tc); 1060 break; 1061 } 1062 1063 if (msr & NE7_DIO) { 1064 *fdc->sc_data++ = *fdc->sc_reg_fifo; 1065 } else { 1066 *fdc->sc_reg_fifo = *fdc->sc_data++; 1067 } 1068 if (--fdc->sc_tc == 0) { 1069 fdc->sc_fcr |= FCR_TC; 1070 FCR_REG_SYNC(); 1071 fdc->sc_istate = ISTATE_DONE; 1072 delay(10); 1073 fdc->sc_fcr &= ~FCR_TC; 1074 FCR_REG_SYNC(); 1075 fdcresult(fdc); 1076 FD_SET_SWINTR(); 1077 break; 1078 } 1079 } 1080 return (1); 1081 } 1082 1083 int 1084 fdcswintr(arg) 1085 void *arg; 1086 { 1087 struct fdc_softc *fdc = arg; 1088 int s; 1089 1090 if (fdc_softpend == 0) 1091 return (0); 1092 1093 isr_soft_clear(FDC_SOFTPRI); 1094 fdc_softpend = 0; 1095 1096 if (fdc->sc_istate != ISTATE_DONE) 1097 return (0); 1098 1099 fdc->sc_istate = ISTATE_IDLE; 1100 s = splbio(); 1101 fdcstate(fdc); 1102 splx(s); 1103 return (1); 1104 } 1105 1106 int 1107 fdcstate(fdc) 1108 struct fdc_softc *fdc; 1109 { 1110 #define st0 fdc->sc_status[0] 1111 #define st1 fdc->sc_status[1] 1112 #define cyl fdc->sc_status[1] 1113 #define OUT_FDC(fdc, c, s) \ 1114 do { if (out_fdc(fdc, (c))) { (fdc)->sc_state = (s); goto loop; } } while(0) 1115 1116 struct fd_softc *fd; 1117 struct buf *bp; 1118 int read, head, sec, nblks; 1119 struct fd_type *type; 1120 struct ne7_fd_formb *finfo = NULL; 1121 1122 1123 if (fdc->sc_istate != ISTATE_IDLE) { 1124 /* Trouble... */ 1125 printf("fdc: spurious interrupt: state %d, istate=%d\n", 1126 fdc->sc_state, fdc->sc_istate); 1127 fdc->sc_istate = ISTATE_IDLE; 1128 if (fdc->sc_state == RESETCOMPLETE || 1129 fdc->sc_state == RESETTIMEDOUT) { 1130 panic("fdcintr: spurious interrupt can't be cleared"); 1131 } 1132 goto doreset; 1133 } 1134 1135 loop: 1136 /* Is there a drive for the controller to do a transfer with? */ 1137 fd = fdc->sc_drives.tqh_first; 1138 if (fd == NULL) { 1139 fdc->sc_state = DEVIDLE; 1140 return (0); 1141 } 1142 1143 /* Is there a transfer to this drive? If not, deactivate drive. */ 1144 bp = BUFQ_FIRST(&fd->sc_q); 1145 if (bp == NULL) { 1146 fd->sc_ops = 0; 1147 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1148 fd->sc_active = 0; 1149 goto loop; 1150 } 1151 1152 if (bp->b_flags & B_FORMAT) 1153 finfo = (struct ne7_fd_formb *)bp->b_data; 1154 1155 switch (fdc->sc_state) { 1156 case DEVIDLE: 1157 fdc->sc_errors = 0; 1158 fd->sc_skip = 0; 1159 fd->sc_bcount = bp->b_bcount; 1160 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1161 callout_stop(&fd->sc_motoroff_ch); 1162 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1163 fdc->sc_state = MOTORWAIT; 1164 return (1); 1165 } 1166 if ((fd->sc_flags & FD_MOTOR) == 0) { 1167 /* Turn on the motor, being careful about pairing. */ 1168 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1169 if (ofd && ofd->sc_flags & FD_MOTOR) { 1170 callout_stop(&ofd->sc_motoroff_ch); 1171 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1172 } 1173 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1174 fd_set_motor(fdc); 1175 fdc->sc_state = MOTORWAIT; 1176 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1177 /* Allow .25s for motor to stabilize. */ 1178 callout_reset(&fd->sc_motoron_ch, hz / 4, 1179 fd_motor_on, fd); 1180 } else { 1181 fd->sc_flags &= ~FD_MOTOR_WAIT; 1182 goto loop; 1183 } 1184 return (1); 1185 } 1186 /* Make sure the right drive is selected. */ 1187 fd_set_motor(fdc); 1188 1189 /*FALLTHROUGH*/ 1190 case DOSEEK: 1191 doseek: 1192 if ((fdc->sc_flags & FDC_EIS) && 1193 (bp->b_flags & B_FORMAT) == 0) { 1194 fd->sc_cylin = bp->b_cylinder; 1195 /* We use implied seek */ 1196 goto doio; 1197 } 1198 1199 if (fd->sc_cylin == bp->b_cylinder) 1200 goto doio; 1201 1202 /* specify command */ 1203 OUT_FDC(fdc, NE7CMD_SPECIFY, SEEKTIMEDOUT); 1204 OUT_FDC(fdc, fd->sc_type->steprate, SEEKTIMEDOUT); 1205 OUT_FDC(fdc, 6|1, SEEKTIMEDOUT); /* XXX head load time == 6ms */ 1206 1207 fdc->sc_istate = ISTATE_SENSEI; 1208 /* seek function */ 1209 OUT_FDC(fdc, NE7CMD_SEEK, SEEKTIMEDOUT); 1210 OUT_FDC(fdc, fd->sc_drive, SEEKTIMEDOUT); /* drive number */ 1211 OUT_FDC(fdc, bp->b_cylinder * fd->sc_type->step, SEEKTIMEDOUT); 1212 1213 fd->sc_cylin = -1; 1214 fdc->sc_state = SEEKWAIT; 1215 fdc->sc_nstat = 0; 1216 1217 fd->sc_dk.dk_seek++; 1218 disk_busy(&fd->sc_dk); 1219 1220 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1221 return (1); 1222 1223 case DOIO: 1224 doio: 1225 #ifdef NOTYET 1226 /* Check to see if the disk has changed */ 1227 if (fdc->sc_reg_dir & FDI_DCHG) { 1228 /* 1229 * The disk in the drive has changed since 1230 * the last transfer. We need to see if its geometry 1231 * has changed. 1232 */ 1233 } 1234 #endif /* NOTYET */ 1235 1236 if (finfo) 1237 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1238 (char *)finfo; 1239 type = fd->sc_type; 1240 sec = fd->sc_blkno % type->seccyl; 1241 nblks = type->seccyl - sec; 1242 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1243 nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); 1244 fd->sc_nblks = nblks; 1245 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1246 head = sec / type->sectrac; 1247 sec -= head * type->sectrac; 1248 #ifdef DIAGNOSTIC 1249 {int block; 1250 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1251 if (block != fd->sc_blkno) { 1252 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1253 #ifdef DDB 1254 Debugger(); 1255 #endif 1256 }} 1257 #endif 1258 read = bp->b_flags & B_READ; 1259 1260 /* Setup for pseudo DMA */ 1261 fdc->sc_data = bp->b_data + fd->sc_skip; 1262 fdc->sc_tc = fd->sc_nbytes; 1263 1264 *fdc->sc_reg_drs = type->rate; 1265 #ifdef FD_DEBUG 1266 if (fdc_debug > 1) 1267 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1268 read ? "read" : "write", fd->sc_drive, 1269 fd->sc_cylin, head, sec, nblks); 1270 #endif 1271 fdc->sc_state = IOCOMPLETE; 1272 fdc->sc_istate = ISTATE_DMA; 1273 fdc->sc_nstat = 0; 1274 if (finfo) { 1275 /* formatting */ 1276 OUT_FDC(fdc, NE7CMD_FORMAT, IOTIMEDOUT); 1277 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1278 OUT_FDC(fdc, finfo->fd_formb_secshift, IOTIMEDOUT); 1279 OUT_FDC(fdc, finfo->fd_formb_nsecs, IOTIMEDOUT); 1280 OUT_FDC(fdc, finfo->fd_formb_gaplen, IOTIMEDOUT); 1281 OUT_FDC(fdc, finfo->fd_formb_fillbyte, IOTIMEDOUT); 1282 } else { 1283 if (read) 1284 OUT_FDC(fdc, NE7CMD_READ, IOTIMEDOUT); 1285 else 1286 OUT_FDC(fdc, NE7CMD_WRITE, IOTIMEDOUT); 1287 OUT_FDC(fdc, (head << 2) | fd->sc_drive, IOTIMEDOUT); 1288 OUT_FDC(fdc, fd->sc_cylin, IOTIMEDOUT); /*track*/ 1289 OUT_FDC(fdc, head, IOTIMEDOUT); 1290 OUT_FDC(fdc, sec + 1, IOTIMEDOUT); /*sector+1*/ 1291 OUT_FDC(fdc, type->secsize, IOTIMEDOUT);/*sector size*/ 1292 OUT_FDC(fdc, type->sectrac, IOTIMEDOUT);/*secs/track*/ 1293 OUT_FDC(fdc, type->gap1, IOTIMEDOUT); /*gap1 size*/ 1294 OUT_FDC(fdc, type->datalen, IOTIMEDOUT);/*data length*/ 1295 } 1296 1297 disk_busy(&fd->sc_dk); 1298 1299 /* allow 2 seconds for operation */ 1300 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1301 return (1); /* will return later */ 1302 1303 case SEEKWAIT: 1304 callout_stop(&fdc->sc_timo_ch); 1305 fdc->sc_state = SEEKCOMPLETE; 1306 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1307 /* allow 1/50 second for heads to settle */ 1308 callout_reset(&fdc->sc_intr_ch, hz / 50, 1309 fdcpseudointr, fdc); 1310 return (1); /* will return later */ 1311 } 1312 /*FALLTHROUGH*/ 1313 case SEEKCOMPLETE: 1314 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1315 1316 /* Make sure seek really happened. */ 1317 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1318 cyl != bp->b_cylinder * fd->sc_type->step) { 1319 #ifdef FD_DEBUG 1320 if (fdc_debug) 1321 fdcstatus(&fd->sc_dv, 2, "seek failed"); 1322 #endif 1323 fdcretry(fdc); 1324 goto loop; 1325 } 1326 fd->sc_cylin = bp->b_cylinder; 1327 goto doio; 1328 1329 case IOTIMEDOUT: 1330 fdc->sc_fcr |= FCR_TC; 1331 FCR_REG_SYNC(); 1332 delay(10); 1333 fdc->sc_fcr &= ~FCR_TC; 1334 FCR_REG_SYNC(); 1335 (void)fdcresult(fdc); 1336 /*FALLTHROUGH*/ 1337 case SEEKTIMEDOUT: 1338 case RECALTIMEDOUT: 1339 case RESETTIMEDOUT: 1340 fdcretry(fdc); 1341 goto loop; 1342 1343 case IOCOMPLETE: /* IO DONE, post-analyze */ 1344 callout_stop(&fdc->sc_timo_ch); 1345 1346 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1347 1348 if (fdc->sc_nstat != 7 || (st0 & 0xf8) != 0 || st1 != 0) { 1349 #ifdef FD_DEBUG 1350 if (fdc_debug) { 1351 fdcstatus(&fd->sc_dv, 7, 1352 bp->b_flags & B_READ 1353 ? "read failed" : "write failed"); 1354 printf("blkno %d nblks %d tc %d\n", 1355 fd->sc_blkno, fd->sc_nblks, fdc->sc_tc); 1356 } 1357 #endif 1358 if (fdc->sc_nstat == 7 && 1359 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1360 1361 /* 1362 * Silently retry overruns if no other 1363 * error bit is set. Adjust threshold. 1364 */ 1365 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1366 if (thr < 15) { 1367 thr++; 1368 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1369 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1370 #ifdef FD_DEBUG 1371 if (fdc_debug) 1372 printf("fdc: %d -> threshold\n", thr); 1373 #endif 1374 fdconf(fdc); 1375 fdc->sc_overruns = 0; 1376 } 1377 if (++fdc->sc_overruns < 3) { 1378 fdc->sc_state = DOIO; 1379 goto loop; 1380 } 1381 } 1382 fdcretry(fdc); 1383 goto loop; 1384 } 1385 if (fdc->sc_errors) { 1386 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1387 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1388 printf("\n"); 1389 fdc->sc_errors = 0; 1390 } else { 1391 if (--fdc->sc_overruns < -20) { 1392 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1393 if (thr > 0) { 1394 thr--; 1395 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1396 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1397 #ifdef FD_DEBUG 1398 if (fdc_debug) 1399 printf("fdc: %d -> threshold\n", thr); 1400 #endif 1401 fdconf(fdc); 1402 } 1403 fdc->sc_overruns = 0; 1404 } 1405 } 1406 fd->sc_blkno += fd->sc_nblks; 1407 fd->sc_skip += fd->sc_nbytes; 1408 fd->sc_bcount -= fd->sc_nbytes; 1409 if (!finfo && fd->sc_bcount > 0) { 1410 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1411 goto doseek; 1412 } 1413 fdfinish(fd, bp); 1414 goto loop; 1415 1416 case DORESET: 1417 doreset: 1418 /* try a reset, keep motor on */ 1419 fd_set_motor(fdc); 1420 delay(100); 1421 fdc_reset(fdc); 1422 fdc->sc_nstat = 0; 1423 fdc->sc_istate = ISTATE_SENSEI; 1424 fdc->sc_state = RESETCOMPLETE; 1425 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1426 return (1); /* will return later */ 1427 1428 case RESETCOMPLETE: 1429 callout_stop(&fdc->sc_timo_ch); 1430 fdconf(fdc); 1431 1432 /* fall through */ 1433 case DORECAL: 1434 fdc->sc_state = RECALWAIT; 1435 fdc->sc_istate = ISTATE_SENSEI; 1436 fdc->sc_nstat = 0; 1437 /* recalibrate function */ 1438 OUT_FDC(fdc, NE7CMD_RECAL, RECALTIMEDOUT); 1439 OUT_FDC(fdc, fd->sc_drive, RECALTIMEDOUT); 1440 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1441 return (1); /* will return later */ 1442 1443 case RECALWAIT: 1444 callout_stop(&fdc->sc_timo_ch); 1445 fdc->sc_state = RECALCOMPLETE; 1446 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1447 /* allow 1/30 second for heads to settle */ 1448 callout_reset(&fdc->sc_intr_ch, hz / 30, 1449 fdcpseudointr, fdc); 1450 return (1); /* will return later */ 1451 } 1452 1453 case RECALCOMPLETE: 1454 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1455 #ifdef FD_DEBUG 1456 if (fdc_debug) 1457 fdcstatus(&fd->sc_dv, 2, "recalibrate failed"); 1458 #endif 1459 fdcretry(fdc); 1460 goto loop; 1461 } 1462 fd->sc_cylin = 0; 1463 goto doseek; 1464 1465 case MOTORWAIT: 1466 if (fd->sc_flags & FD_MOTOR_WAIT) 1467 return (1); /* time's not up yet */ 1468 goto doseek; 1469 1470 default: 1471 fdcstatus(&fd->sc_dv, 0, "stray interrupt"); 1472 return (1); 1473 } 1474 #ifdef DIAGNOSTIC 1475 panic("fdcintr: impossible"); 1476 #endif 1477 #undef st0 1478 #undef st1 1479 #undef cyl 1480 } 1481 1482 void 1483 fdcretry(fdc) 1484 struct fdc_softc *fdc; 1485 { 1486 char bits[64]; 1487 struct fd_softc *fd; 1488 struct buf *bp; 1489 1490 fd = fdc->sc_drives.tqh_first; 1491 bp = BUFQ_FIRST(&fd->sc_q); 1492 1493 fdc->sc_overruns = 0; 1494 if (fd->sc_opts & FDOPT_NORETRY) 1495 goto fail; 1496 1497 switch (fdc->sc_errors) { 1498 case 0: 1499 /* try again */ 1500 fdc->sc_state = 1501 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1502 break; 1503 1504 case 1: case 2: case 3: 1505 /* didn't work; try recalibrating */ 1506 fdc->sc_state = DORECAL; 1507 break; 1508 1509 case 4: 1510 /* still no go; reset the bastard */ 1511 fdc->sc_state = DORESET; 1512 break; 1513 1514 default: 1515 fail: 1516 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1517 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1518 fd->sc_skip / FDC_BSIZE, 1519 (struct disklabel *)NULL); 1520 1521 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1522 NE7_ST0BITS, bits, sizeof(bits))); 1523 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1524 NE7_ST1BITS, bits, sizeof(bits))); 1525 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1526 NE7_ST2BITS, bits, sizeof(bits))); 1527 printf(" cyl %d head %d sec %d)\n", 1528 fdc->sc_status[3], fdc->sc_status[4], 1529 fdc->sc_status[5]); 1530 } 1531 1532 bp->b_flags |= B_ERROR; 1533 bp->b_error = EIO; 1534 fdfinish(fd, bp); 1535 } 1536 fdc->sc_errors++; 1537 } 1538 1539 int 1540 fdsize(dev) 1541 dev_t dev; 1542 { 1543 1544 /* Swapping to floppies would not make sense. */ 1545 return (-1); 1546 } 1547 1548 int 1549 fddump(dev, blkno, va, size) 1550 dev_t dev; 1551 daddr_t blkno; 1552 caddr_t va; 1553 size_t size; 1554 { 1555 1556 /* Not implemented. */ 1557 return (EINVAL); 1558 } 1559 1560 int 1561 fdioctl(dev, cmd, addr, flag, p) 1562 dev_t dev; 1563 u_long cmd; 1564 caddr_t addr; 1565 int flag; 1566 struct proc *p; 1567 { 1568 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1569 struct fdformat_parms *form_parms; 1570 struct fdformat_cmd *form_cmd; 1571 struct ne7_fd_formb *fd_formb; 1572 int il[FD_MAX_NSEC + 1]; 1573 int i, j; 1574 int error; 1575 1576 switch (cmd) { 1577 case DIOCGDINFO: 1578 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1579 return 0; 1580 1581 case DIOCWLABEL: 1582 if ((flag & FWRITE) == 0) 1583 return EBADF; 1584 /* XXX do something */ 1585 return (0); 1586 1587 case DIOCWDINFO: 1588 if ((flag & FWRITE) == 0) 1589 return (EBADF); 1590 1591 error = setdisklabel(fd->sc_dk.dk_label, 1592 (struct disklabel *)addr, 0, 1593 fd->sc_dk.dk_cpulabel); 1594 if (error) 1595 return (error); 1596 1597 error = writedisklabel(dev, fdstrategy, 1598 fd->sc_dk.dk_label, 1599 fd->sc_dk.dk_cpulabel); 1600 return (error); 1601 1602 case DIOCLOCK: 1603 /* 1604 * Nothing to do here, really. 1605 */ 1606 return (0); 1607 1608 case DIOCEJECT: 1609 if (*(int *)addr == 0) { 1610 int part = DISKPART(dev); 1611 /* 1612 * Don't force eject: check that we are the only 1613 * partition open. If so, unlock it. 1614 */ 1615 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1616 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1617 fd->sc_dk.dk_openmask) { 1618 return (EBUSY); 1619 } 1620 } 1621 /* FALLTHROUGH */ 1622 case ODIOCEJECT: 1623 fd_do_eject((void *)fd->sc_dv.dv_parent, fd->sc_drive); 1624 return (0); 1625 1626 case FDIOCGETFORMAT: 1627 form_parms = (struct fdformat_parms *)addr; 1628 form_parms->fdformat_version = FDFORMAT_VERSION; 1629 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1630 form_parms->ncyl = fd->sc_type->tracks; 1631 form_parms->nspt = fd->sc_type->sectrac; 1632 form_parms->ntrk = fd->sc_type->heads; 1633 form_parms->stepspercyl = fd->sc_type->step; 1634 form_parms->gaplen = fd->sc_type->gap2; 1635 form_parms->fillbyte = fd->sc_type->fillbyte; 1636 form_parms->interleave = fd->sc_type->interleave; 1637 switch (fd->sc_type->rate) { 1638 case FDC_500KBPS: 1639 form_parms->xfer_rate = 500 * 1024; 1640 break; 1641 case FDC_300KBPS: 1642 form_parms->xfer_rate = 300 * 1024; 1643 break; 1644 case FDC_250KBPS: 1645 form_parms->xfer_rate = 250 * 1024; 1646 break; 1647 default: 1648 return (EINVAL); 1649 } 1650 return (0); 1651 1652 case FDIOCSETFORMAT: 1653 if ((flag & FWRITE) == 0) 1654 return (EBADF); /* must be opened for writing */ 1655 1656 form_parms = (struct fdformat_parms *)addr; 1657 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1658 return (EINVAL);/* wrong version of formatting prog */ 1659 1660 i = form_parms->nbps >> 7; 1661 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1662 i & ~(1 << (ffs(i)-1))) 1663 /* not a power-of-two multiple of 128 */ 1664 return (EINVAL); 1665 1666 switch (form_parms->xfer_rate) { 1667 case 500 * 1024: 1668 fd->sc_type->rate = FDC_500KBPS; 1669 break; 1670 case 300 * 1024: 1671 fd->sc_type->rate = FDC_300KBPS; 1672 break; 1673 case 250 * 1024: 1674 fd->sc_type->rate = FDC_250KBPS; 1675 break; 1676 default: 1677 return (EINVAL); 1678 } 1679 1680 if (form_parms->nspt > FD_MAX_NSEC || 1681 form_parms->fillbyte > 0xff || 1682 form_parms->interleave > 0xff) 1683 return EINVAL; 1684 fd->sc_type->sectrac = form_parms->nspt; 1685 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1686 return EINVAL; 1687 fd->sc_type->heads = form_parms->ntrk; 1688 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1689 fd->sc_type->secsize = ffs(i)-1; 1690 fd->sc_type->gap2 = form_parms->gaplen; 1691 fd->sc_type->tracks = form_parms->ncyl; 1692 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1693 form_parms->nbps / DEV_BSIZE; 1694 fd->sc_type->step = form_parms->stepspercyl; 1695 fd->sc_type->fillbyte = form_parms->fillbyte; 1696 fd->sc_type->interleave = form_parms->interleave; 1697 return (0); 1698 1699 case FDIOCFORMAT_TRACK: 1700 if((flag & FWRITE) == 0) 1701 /* must be opened for writing */ 1702 return (EBADF); 1703 form_cmd = (struct fdformat_cmd *)addr; 1704 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1705 /* wrong version of formatting prog */ 1706 return (EINVAL); 1707 1708 if (form_cmd->head >= fd->sc_type->heads || 1709 form_cmd->cylinder >= fd->sc_type->tracks) { 1710 return (EINVAL); 1711 } 1712 1713 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1714 M_TEMP, M_NOWAIT); 1715 if (fd_formb == 0) 1716 return (ENOMEM); 1717 1718 fd_formb->head = form_cmd->head; 1719 fd_formb->cyl = form_cmd->cylinder; 1720 fd_formb->transfer_rate = fd->sc_type->rate; 1721 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1722 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1723 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1724 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1725 1726 memset(il, 0, sizeof(il)); 1727 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1728 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 1729 j++; 1730 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 1731 j += fd->sc_type->interleave; 1732 } 1733 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1734 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1735 fd_formb->fd_formb_headno(i) = form_cmd->head; 1736 fd_formb->fd_formb_secno(i) = il[i+1]; 1737 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1738 } 1739 1740 error = fdformat(dev, fd_formb, p); 1741 free(fd_formb, M_TEMP); 1742 return (error); 1743 1744 case FDIOCGETOPTS: /* get drive options */ 1745 *(int *)addr = fd->sc_opts; 1746 return (0); 1747 1748 case FDIOCSETOPTS: /* set drive options */ 1749 fd->sc_opts = *(int *)addr; 1750 return (0); 1751 1752 #ifdef DEBUG 1753 case _IO('f', 100): 1754 { 1755 int i; 1756 struct fdc_softc *fdc = (struct fdc_softc *) 1757 fd->sc_dv.dv_parent; 1758 1759 out_fdc(fdc, NE7CMD_DUMPREG); 1760 fdcresult(fdc); 1761 printf("dumpreg(%d regs): <", fdc->sc_nstat); 1762 for (i = 0; i < fdc->sc_nstat; i++) 1763 printf(" %x", fdc->sc_status[i]); 1764 printf(">\n"); 1765 } 1766 1767 return (0); 1768 case _IOW('f', 101, int): 1769 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg &= 1770 ~CFG_THRHLD_MASK; 1771 ((struct fdc_softc *)fd->sc_dv.dv_parent)->sc_cfg |= 1772 (*(int *)addr & CFG_THRHLD_MASK); 1773 fdconf((struct fdc_softc *) fd->sc_dv.dv_parent); 1774 return (0); 1775 case _IO('f', 102): 1776 { 1777 int i; 1778 struct fdc_softc *fdc = (struct fdc_softc *) 1779 fd->sc_dv.dv_parent; 1780 out_fdc(fdc, NE7CMD_SENSEI); 1781 fdcresult(fdc); 1782 printf("sensei(%d regs): <", fdc->sc_nstat); 1783 for (i=0; i< fdc->sc_nstat; i++) 1784 printf(" 0x%x", fdc->sc_status[i]); 1785 } 1786 printf(">\n"); 1787 return (0); 1788 #endif 1789 default: 1790 return (ENOTTY); 1791 } 1792 1793 #ifdef DIAGNOSTIC 1794 panic("fdioctl: impossible"); 1795 #endif 1796 } 1797 1798 int 1799 fdformat(dev, finfo, p) 1800 dev_t dev; 1801 struct ne7_fd_formb *finfo; 1802 struct proc *p; 1803 { 1804 int rv = 0, s; 1805 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1806 struct fd_type *type = fd->sc_type; 1807 struct buf *bp; 1808 1809 /* set up a buffer header for fdstrategy() */ 1810 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1811 if (bp == 0) 1812 return (ENOBUFS); 1813 1814 memset((void *)bp, 0, sizeof(struct buf)); 1815 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1816 bp->b_proc = p; 1817 bp->b_dev = dev; 1818 1819 /* 1820 * Calculate a fake blkno, so fdstrategy() would initiate a 1821 * seek to the requested cylinder. 1822 */ 1823 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1824 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1825 1826 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1827 bp->b_data = (caddr_t)finfo; 1828 1829 #ifdef FD_DEBUG 1830 if (fdc_debug) 1831 printf("fdformat: blkno %x count %ld\n", 1832 bp->b_blkno, bp->b_bcount); 1833 #endif 1834 1835 /* now do the format */ 1836 fdstrategy(bp); 1837 1838 /* ...and wait for it to complete */ 1839 s = splbio(); 1840 while (!(bp->b_flags & B_DONE)) { 1841 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1842 if (rv == EWOULDBLOCK) 1843 break; 1844 } 1845 splx(s); 1846 1847 if (rv == EWOULDBLOCK) { 1848 /* timed out */ 1849 rv = EIO; 1850 biodone(bp); 1851 } 1852 if (bp->b_flags & B_ERROR) { 1853 rv = bp->b_error; 1854 } 1855 free(bp, M_TEMP); 1856 return (rv); 1857 } 1858 1859 void 1860 fdgetdisklabel(dev) 1861 dev_t dev; 1862 { 1863 int unit = FDUNIT(dev), i; 1864 struct fd_softc *fd = fd_cd.cd_devs[unit]; 1865 struct disklabel *lp = fd->sc_dk.dk_label; 1866 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 1867 1868 memset(lp, 0, sizeof(struct disklabel)); 1869 memset(lp, 0, sizeof(struct cpu_disklabel)); 1870 1871 lp->d_type = DTYPE_FLOPPY; 1872 lp->d_secsize = FDC_BSIZE; 1873 lp->d_secpercyl = fd->sc_type->seccyl; 1874 lp->d_nsectors = fd->sc_type->sectrac; 1875 lp->d_ncylinders = fd->sc_type->tracks; 1876 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1877 lp->d_rpm = 3600; /* XXX like it matters... */ 1878 1879 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 1880 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1881 lp->d_interleave = 1; 1882 1883 lp->d_partitions[RAW_PART].p_offset = 0; 1884 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 1885 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 1886 lp->d_npartitions = RAW_PART + 1; 1887 1888 lp->d_magic = DISKMAGIC; 1889 lp->d_magic2 = DISKMAGIC; 1890 lp->d_checksum = dkcksum(lp); 1891 1892 /* 1893 * Call the generic disklabel extraction routine. If there's 1894 * not a label there, fake it. 1895 */ 1896 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 1897 strncpy(lp->d_packname, "default label", 1898 sizeof(lp->d_packname)); 1899 /* 1900 * Reset the partition info; it might have gotten 1901 * trashed in readdisklabel(). 1902 * 1903 * XXX Why do we have to do this? readdisklabel() 1904 * should be safe... 1905 */ 1906 for (i = 0; i < MAXPARTITIONS; ++i) { 1907 lp->d_partitions[i].p_offset = 0; 1908 if (i == RAW_PART) { 1909 lp->d_partitions[i].p_size = 1910 lp->d_secpercyl * lp->d_ncylinders; 1911 lp->d_partitions[i].p_fstype = FS_BSDFFS; 1912 } else { 1913 lp->d_partitions[i].p_size = 0; 1914 lp->d_partitions[i].p_fstype = FS_UNUSED; 1915 } 1916 } 1917 lp->d_npartitions = RAW_PART + 1; 1918 } 1919 } 1920 1921 void 1922 fd_do_eject(fdc, unit) 1923 struct fdc_softc *fdc; 1924 int unit; 1925 { 1926 fdc->sc_fcr |= FCR_DSEL(unit)|FCR_EJECT; 1927 FCR_REG_SYNC(); 1928 delay(10); 1929 fdc->sc_fcr &= ~(FCR_DSEL(unit)|FCR_EJECT); 1930 FCR_REG_SYNC(); 1931 } 1932 1933 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1934 int fd_read_md_image __P((size_t *, caddr_t *)); 1935 #endif 1936 1937 /* ARGSUSED */ 1938 void 1939 fd_mountroot_hook(dev) 1940 struct device *dev; 1941 { 1942 int c; 1943 1944 fd_do_eject(fdc_cd.cd_devs[0], 0); /* XXX - doesn't check ``dev'' */ 1945 printf("Insert filesystem floppy and press return."); 1946 for (;;) { 1947 c = cngetc(); 1948 if ((c == '\r') || (c == '\n')) { 1949 printf("\n"); 1950 break; 1951 } 1952 } 1953 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1954 { 1955 extern int (*md_read_image) __P((size_t *, caddr_t *)); 1956 md_read_image = fd_read_md_image; 1957 } 1958 #endif 1959 } 1960 1961 #ifdef MEMORY_DISK_HOOKS_sun3x_not_yet 1962 1963 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 1964 1965 int 1966 fd_read_md_image(sizep, addrp) 1967 size_t *sizep; 1968 caddr_t *addrp; 1969 { 1970 struct buf buf, *bp = &buf; 1971 dev_t dev; 1972 off_t offset; 1973 caddr_t addr; 1974 1975 dev = makedev(54,0); /* XXX */ 1976 1977 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 1978 *addrp = addr; 1979 1980 if (fdopen(dev, 0, S_IFCHR, NULL)) 1981 panic("fd: mountroot: fdopen"); 1982 1983 offset = 0; 1984 1985 for (;;) { 1986 bp->b_dev = dev; 1987 bp->b_error = 0; 1988 bp->b_resid = 0; 1989 bp->b_proc = NULL; 1990 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 1991 bp->b_blkno = btodb(offset); 1992 bp->b_bcount = DEV_BSIZE; 1993 bp->b_data = addr; 1994 fdstrategy(bp); 1995 while ((bp->b_flags & B_DONE) == 0) { 1996 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 1997 } 1998 if (bp->b_error) 1999 panic("fd: mountroot: fdread error %d", bp->b_error); 2000 2001 if (bp->b_resid != 0) 2002 break; 2003 2004 addr += DEV_BSIZE; 2005 offset += DEV_BSIZE; 2006 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2007 break; 2008 } 2009 (void)fdclose(dev, 0, S_IFCHR, NULL); 2010 *sizep = offset; 2011 fd_do_eject(fdc_cd.cd_devs[0], FDUNIT(dev)); /* XXX */ 2012 return (0); 2013 } 2014 #endif 2015