1 /* $NetBSD: fd.c,v 1.7 2000/07/06 02:02:48 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)fd.c 7.4 (Berkeley) 5/25/91 75 */ 76 77 /* 78 * Floppy formatting facilities merged from FreeBSD fd.c driver: 79 * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp 80 * which carries the same copyright/redistribution notice as shown above with 81 * the addition of the following statement before the "Redistribution and 82 * use ..." clause: 83 * 84 * Copyright (c) 1993, 1994 by 85 * jc@irbs.UUCP (John Capo) 86 * vak@zebub.msk.su (Serge Vakulenko) 87 * ache@astral.msk.su (Andrew A. Chernov) 88 * 89 * Copyright (c) 1993, 1994, 1995 by 90 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 91 * dufault@hda.com (Peter Dufault) 92 */ 93 94 #include "rnd.h" 95 #include "opt_ddb.h" 96 97 /* 98 * XXX This driver should be properly MI'd some day, but this allows us 99 * XXX to eliminate a lot of code duplication for now. 100 */ 101 #if !defined(__alpha__) && !defined(bebox) && !defined(__i386__) 102 #error platform not supported by this driver, yet 103 #endif 104 105 #include <sys/param.h> 106 #include <sys/systm.h> 107 #include <sys/callout.h> 108 #include <sys/kernel.h> 109 #include <sys/file.h> 110 #include <sys/ioctl.h> 111 #include <sys/device.h> 112 #include <sys/disklabel.h> 113 #include <sys/dkstat.h> 114 #include <sys/disk.h> 115 #include <sys/buf.h> 116 #include <sys/malloc.h> 117 #include <sys/uio.h> 118 #include <sys/syslog.h> 119 #include <sys/queue.h> 120 #include <sys/proc.h> 121 #include <sys/fdio.h> 122 #if NRND > 0 123 #include <sys/rnd.h> 124 #endif 125 126 #include <uvm/uvm_extern.h> 127 128 #include <dev/cons.h> 129 130 #include <machine/cpu.h> 131 #include <machine/bus.h> 132 #include <machine/conf.h> 133 #include <machine/intr.h> 134 135 #include <dev/isa/isavar.h> 136 #include <dev/isa/isadmavar.h> 137 138 #include <dev/isa/fdreg.h> 139 #include <dev/isa/fdcvar.h> 140 141 #if defined(__i386__) 142 143 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 144 #include <i386/isa/nvram.h> 145 146 #include "mca.h" 147 #if NMCA > 0 148 #include <machine/mca_machdep.h> /* for MCA_system */ 149 #endif 150 151 #endif /* __i386__ */ 152 153 #define FDUNIT(dev) (minor(dev) / 8) 154 #define FDTYPE(dev) (minor(dev) % 8) 155 156 /* XXX misuse a flag to identify format operation */ 157 #define B_FORMAT B_XXX 158 159 /* controller driver configuration */ 160 int fdprint __P((void *, const char *)); 161 162 /* 163 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 164 * we tell them apart. 165 */ 166 struct fd_type { 167 int sectrac; /* sectors per track */ 168 int heads; /* number of heads */ 169 int seccyl; /* sectors per cylinder */ 170 int secsize; /* size code for sectors */ 171 int datalen; /* data len when secsize = 0 */ 172 int steprate; /* step rate and head unload time */ 173 int gap1; /* gap len between sectors */ 174 int gap2; /* formatting gap */ 175 int cyls; /* total num of cylinders */ 176 int size; /* size of disk in sectors */ 177 int step; /* steps per cylinder */ 178 int rate; /* transfer speed code */ 179 u_char fillbyte; /* format fill byte */ 180 u_char interleave; /* interleave factor (formatting) */ 181 char *name; 182 }; 183 184 #if NMCA > 0 185 /* MCA - specific entries */ 186 struct fd_type mca_fd_types[] = { 187 { 18,2,36,2,0xff,0x0f,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette - XXX try 16ms step rate */ 188 { 9,2,18,2,0xff,0x4f,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette - XXX try 24ms step rate */ 189 }; 190 #endif /* NMCA > 0 */ 191 192 /* The order of entries in the following table is important -- BEWARE! */ 193 struct fd_type fd_types[] = { 194 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 195 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 196 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 197 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 198 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 199 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 200 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 201 }; 202 203 /* software state, per disk (with up to 4 disks per ctlr) */ 204 struct fd_softc { 205 struct device sc_dev; 206 struct disk sc_dk; 207 208 struct fd_type *sc_deftype; /* default type descriptor */ 209 struct fd_type *sc_type; /* current type descriptor */ 210 struct fd_type sc_type_copy; /* copy for fiddling when formatting */ 211 212 struct callout sc_motoron_ch; 213 struct callout sc_motoroff_ch; 214 215 daddr_t sc_blkno; /* starting block number */ 216 int sc_bcount; /* byte count left */ 217 int sc_opts; /* user-set options */ 218 int sc_skip; /* bytes already transferred */ 219 int sc_nblks; /* number of blocks currently tranferring */ 220 int sc_nbytes; /* number of bytes currently tranferring */ 221 222 int sc_drive; /* physical unit number */ 223 int sc_flags; 224 #define FD_OPEN 0x01 /* it's open */ 225 #define FD_MOTOR 0x02 /* motor should be on */ 226 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 227 int sc_cylin; /* where we think the head is */ 228 229 void *sc_sdhook; /* saved shutdown hook for drive. */ 230 231 TAILQ_ENTRY(fd_softc) sc_drivechain; 232 int sc_ops; /* I/O ops since last switch */ 233 struct buf_queue sc_q; /* pending I/O requests */ 234 int sc_active; /* number of active I/O operations */ 235 236 #if NRND > 0 237 rndsource_element_t rnd_source; 238 #endif 239 }; 240 241 int fdprobe __P((struct device *, struct cfdata *, void *)); 242 void fdattach __P((struct device *, struct device *, void *)); 243 244 extern struct cfdriver fd_cd; 245 246 struct cfattach fd_ca = { 247 sizeof(struct fd_softc), fdprobe, fdattach, 248 }; 249 250 void fdgetdisklabel __P((struct fd_softc *)); 251 int fd_get_parms __P((struct fd_softc *)); 252 void fdstrategy __P((struct buf *)); 253 void fdstart __P((struct fd_softc *)); 254 255 struct dkdriver fddkdriver = { fdstrategy }; 256 257 #if defined(__i386__) 258 struct fd_type *fd_nvtotype __P((char *, int, int)); 259 #endif /* __i386__ */ 260 void fd_set_motor __P((struct fdc_softc *fdc, int reset)); 261 void fd_motor_off __P((void *arg)); 262 void fd_motor_on __P((void *arg)); 263 int fdcresult __P((struct fdc_softc *fdc)); 264 void fdcstart __P((struct fdc_softc *fdc)); 265 void fdcstatus __P((struct device *dv, int n, char *s)); 266 void fdctimeout __P((void *arg)); 267 void fdcpseudointr __P((void *arg)); 268 void fdcretry __P((struct fdc_softc *fdc)); 269 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 270 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 271 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 272 273 void fd_mountroot_hook __P((struct device *)); 274 275 /* 276 * Arguments passed between fdcattach and fdprobe. 277 */ 278 struct fdc_attach_args { 279 int fa_drive; 280 struct fd_type *fa_deftype; 281 }; 282 283 /* 284 * Print the location of a disk drive (called just before attaching the 285 * the drive). If `fdc' is not NULL, the drive was found but was not 286 * in the system config file; print the drive name as well. 287 * Return QUIET (config_find ignores this if the device was configured) to 288 * avoid printing `fdN not configured' messages. 289 */ 290 int 291 fdprint(aux, fdc) 292 void *aux; 293 const char *fdc; 294 { 295 register struct fdc_attach_args *fa = aux; 296 297 if (!fdc) 298 printf(" drive %d", fa->fa_drive); 299 return QUIET; 300 } 301 302 void 303 fdcattach(fdc) 304 struct fdc_softc *fdc; 305 { 306 struct fdc_attach_args fa; 307 #if defined(__i386__) 308 int type; 309 #endif 310 311 callout_init(&fdc->sc_timo_ch); 312 callout_init(&fdc->sc_intr_ch); 313 314 fdc->sc_state = DEVIDLE; 315 TAILQ_INIT(&fdc->sc_drives); 316 317 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 318 319 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 320 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 321 printf("%s: can't set up ISA DMA map\n", 322 fdc->sc_dev.dv_xname); 323 return; 324 } 325 326 #if defined(__i386__) 327 /* 328 * The NVRAM info only tells us about the first two disks on the 329 * `primary' floppy controller. 330 */ 331 if (fdc->sc_dev.dv_unit == 0) 332 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 333 else 334 type = -1; 335 #endif /* __i386__ */ 336 337 /* physical limit: four drives per controller. */ 338 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 339 #if defined(__i386__) 340 if (type >= 0 && fa.fa_drive < 2) 341 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 342 type, fa.fa_drive); 343 else 344 fa.fa_deftype = NULL; /* unknown */ 345 #else 346 /* 347 * Default to 1.44MB on Alpha and BeBox. How do we tell 348 * on these platforms? 349 */ 350 fa.fa_deftype = &fd_types[0]; 351 #endif /* __i386__ */ 352 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 353 } 354 } 355 356 int 357 fdprobe(parent, match, aux) 358 struct device *parent; 359 struct cfdata *match; 360 void *aux; 361 { 362 struct fdc_softc *fdc = (void *)parent; 363 struct cfdata *cf = match; 364 struct fdc_attach_args *fa = aux; 365 int drive = fa->fa_drive; 366 bus_space_tag_t iot = fdc->sc_iot; 367 bus_space_handle_t ioh = fdc->sc_ioh; 368 int n; 369 370 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 371 cf->cf_loc[FDCCF_DRIVE] != drive) 372 return 0; 373 /* 374 * XXX 375 * This is to work around some odd interactions between this driver 376 * and SMC Ethernet cards. 377 */ 378 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 379 return 0; 380 381 /* select drive and turn on motor */ 382 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 383 /* wait for motor to spin up */ 384 delay(250000); 385 out_fdc(iot, ioh, NE7CMD_RECAL); 386 out_fdc(iot, ioh, drive); 387 /* wait for recalibrate */ 388 delay(2000000); 389 out_fdc(iot, ioh, NE7CMD_SENSEI); 390 n = fdcresult(fdc); 391 #ifdef FD_DEBUG 392 { 393 int i; 394 printf("fdprobe: status"); 395 for (i = 0; i < n; i++) 396 printf(" %x", fdc->sc_status[i]); 397 printf("\n"); 398 } 399 #endif 400 /* turn off motor */ 401 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 402 403 #if defined(bebox) /* XXX What is this about? --thorpej@netbsd.org */ 404 if (n != 2 || (fdc->sc_status[1] != 0)) 405 return 0; 406 #else 407 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 408 return 0; 409 #endif /* bebox */ 410 411 return 1; 412 } 413 414 /* 415 * Controller is working, and drive responded. Attach it. 416 */ 417 void 418 fdattach(parent, self, aux) 419 struct device *parent, *self; 420 void *aux; 421 { 422 struct fdc_softc *fdc = (void *)parent; 423 struct fd_softc *fd = (void *)self; 424 struct fdc_attach_args *fa = aux; 425 struct fd_type *type = fa->fa_deftype; 426 int drive = fa->fa_drive; 427 428 callout_init(&fd->sc_motoron_ch); 429 callout_init(&fd->sc_motoroff_ch); 430 431 /* XXX Allow `flags' to override device type? */ 432 433 if (type) 434 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 435 type->cyls, type->heads, type->sectrac); 436 else 437 printf(": density unknown\n"); 438 439 BUFQ_INIT(&fd->sc_q); 440 fd->sc_cylin = -1; 441 fd->sc_drive = drive; 442 fd->sc_deftype = type; 443 fdc->sc_fd[drive] = fd; 444 445 /* 446 * Initialize and attach the disk structure. 447 */ 448 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 449 fd->sc_dk.dk_driver = &fddkdriver; 450 disk_attach(&fd->sc_dk); 451 452 /* 453 * Establish a mountroot hook. 454 */ 455 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 456 457 /* Needed to power off if the motor is on when we halt. */ 458 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 459 460 #if NRND > 0 461 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 462 RND_TYPE_DISK, 0); 463 #endif 464 } 465 466 #if defined(__i386__) 467 /* 468 * Translate nvram type into internal data structure. Return NULL for 469 * none/unknown/unusable. 470 */ 471 struct fd_type * 472 fd_nvtotype(fdc, nvraminfo, drive) 473 char *fdc; 474 int nvraminfo, drive; 475 { 476 int type; 477 478 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 479 switch (type) { 480 case NVRAM_DISKETTE_NONE: 481 return NULL; 482 case NVRAM_DISKETTE_12M: 483 return &fd_types[1]; 484 case NVRAM_DISKETTE_TYPE5: 485 case NVRAM_DISKETTE_TYPE6: 486 /* XXX We really ought to handle 2.88MB format. */ 487 case NVRAM_DISKETTE_144M: 488 #if NMCA > 0 489 if (MCA_system) 490 return &mca_fd_types[0]; 491 else 492 #endif /* NMCA > 0 */ 493 return &fd_types[0]; 494 case NVRAM_DISKETTE_360K: 495 return &fd_types[3]; 496 case NVRAM_DISKETTE_720K: 497 #if NMCA > 0 498 if (MCA_system) 499 return &mca_fd_types[1]; 500 else 501 #endif /* NMCA > 0 */ 502 return &fd_types[4]; 503 default: 504 printf("%s: drive %d: unknown device type 0x%x\n", 505 fdc, drive, type); 506 return NULL; 507 } 508 } 509 #endif /* __i386__ */ 510 511 __inline struct fd_type * 512 fd_dev_to_type(fd, dev) 513 struct fd_softc *fd; 514 dev_t dev; 515 { 516 int type = FDTYPE(dev); 517 518 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 519 return NULL; 520 return type ? &fd_types[type - 1] : fd->sc_deftype; 521 } 522 523 void 524 fdstrategy(bp) 525 register struct buf *bp; /* IO operation to perform */ 526 { 527 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 528 int sz; 529 int s; 530 531 /* Valid unit, controller, and request? */ 532 if (bp->b_blkno < 0 || 533 ((bp->b_bcount % FDC_BSIZE) != 0 && 534 (bp->b_flags & B_FORMAT) == 0)) { 535 bp->b_error = EINVAL; 536 goto bad; 537 } 538 539 /* If it's a null transfer, return immediately. */ 540 if (bp->b_bcount == 0) 541 goto done; 542 543 sz = howmany(bp->b_bcount, FDC_BSIZE); 544 545 if (bp->b_blkno + sz > fd->sc_type->size) { 546 sz = fd->sc_type->size - bp->b_blkno; 547 if (sz == 0) { 548 /* If exactly at end of disk, return EOF. */ 549 goto done; 550 } 551 if (sz < 0) { 552 /* If past end of disk, return EINVAL. */ 553 bp->b_error = EINVAL; 554 goto bad; 555 } 556 /* Otherwise, truncate request. */ 557 bp->b_bcount = sz << DEV_BSHIFT; 558 } 559 560 bp->b_rawblkno = bp->b_blkno; 561 bp->b_cylinder = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 562 563 #ifdef FD_DEBUG 564 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld sz %d\n", 565 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 566 #endif 567 568 /* Queue transfer on drive, activate drive and controller if idle. */ 569 s = splbio(); 570 disksort_cylinder(&fd->sc_q, bp); 571 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 572 if (fd->sc_active == 0) 573 fdstart(fd); 574 #ifdef DIAGNOSTIC 575 else { 576 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 577 if (fdc->sc_state == DEVIDLE) { 578 printf("fdstrategy: controller inactive\n"); 579 fdcstart(fdc); 580 } 581 } 582 #endif 583 splx(s); 584 return; 585 586 bad: 587 bp->b_flags |= B_ERROR; 588 done: 589 /* Toss transfer; we're done early. */ 590 bp->b_resid = bp->b_bcount; 591 biodone(bp); 592 } 593 594 void 595 fdstart(fd) 596 struct fd_softc *fd; 597 { 598 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 599 int active = fdc->sc_drives.tqh_first != 0; 600 601 /* Link into controller queue. */ 602 fd->sc_active = 1; 603 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 604 605 /* If controller not already active, start it. */ 606 if (!active) 607 fdcstart(fdc); 608 } 609 610 void 611 fdfinish(fd, bp) 612 struct fd_softc *fd; 613 struct buf *bp; 614 { 615 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 616 617 /* 618 * Move this drive to the end of the queue to give others a `fair' 619 * chance. We only force a switch if N operations are completed while 620 * another drive is waiting to be serviced, since there is a long motor 621 * startup delay whenever we switch. 622 */ 623 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 624 fd->sc_ops = 0; 625 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 626 if (BUFQ_NEXT(bp) != NULL) 627 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 628 else 629 fd->sc_active = 0; 630 } 631 bp->b_resid = fd->sc_bcount; 632 fd->sc_skip = 0; 633 BUFQ_REMOVE(&fd->sc_q, bp); 634 635 #if NRND > 0 636 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 637 #endif 638 639 biodone(bp); 640 /* turn off motor 5s from now */ 641 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 642 fdc->sc_state = DEVIDLE; 643 } 644 645 int 646 fdread(dev, uio, flags) 647 dev_t dev; 648 struct uio *uio; 649 int flags; 650 { 651 652 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 653 } 654 655 int 656 fdwrite(dev, uio, flags) 657 dev_t dev; 658 struct uio *uio; 659 int flags; 660 { 661 662 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 663 } 664 665 void 666 fd_set_motor(fdc, reset) 667 struct fdc_softc *fdc; 668 int reset; 669 { 670 struct fd_softc *fd; 671 u_char status; 672 int n; 673 674 if ((fd = fdc->sc_drives.tqh_first) != NULL) 675 status = fd->sc_drive; 676 else 677 status = 0; 678 if (!reset) 679 status |= FDO_FRST | FDO_FDMAEN; 680 for (n = 0; n < 4; n++) 681 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 682 status |= FDO_MOEN(n); 683 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 684 } 685 686 void 687 fd_motor_off(arg) 688 void *arg; 689 { 690 struct fd_softc *fd = arg; 691 int s; 692 693 s = splbio(); 694 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 695 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 696 splx(s); 697 } 698 699 void 700 fd_motor_on(arg) 701 void *arg; 702 { 703 struct fd_softc *fd = arg; 704 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 705 int s; 706 707 s = splbio(); 708 fd->sc_flags &= ~FD_MOTOR_WAIT; 709 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 710 (void) fdcintr(fdc); 711 splx(s); 712 } 713 714 int 715 fdcresult(fdc) 716 struct fdc_softc *fdc; 717 { 718 bus_space_tag_t iot = fdc->sc_iot; 719 bus_space_handle_t ioh = fdc->sc_ioh; 720 u_char i; 721 int j = 100000, 722 n = 0; 723 724 for (; j; j--) { 725 i = bus_space_read_1(iot, ioh, fdsts) & 726 (NE7_DIO | NE7_RQM | NE7_CB); 727 if (i == NE7_RQM) 728 return n; 729 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 730 if (n >= sizeof(fdc->sc_status)) { 731 log(LOG_ERR, "fdcresult: overrun\n"); 732 return -1; 733 } 734 fdc->sc_status[n++] = 735 bus_space_read_1(iot, ioh, fddata); 736 } 737 delay(10); 738 } 739 log(LOG_ERR, "fdcresult: timeout\n"); 740 return -1; 741 } 742 743 int 744 out_fdc(iot, ioh, x) 745 bus_space_tag_t iot; 746 bus_space_handle_t ioh; 747 u_char x; 748 { 749 int i = 100000; 750 751 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_DIO) && i-- > 0); 752 if (i <= 0) 753 return -1; 754 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0); 755 if (i <= 0) 756 return -1; 757 bus_space_write_1(iot, ioh, fddata, x); 758 return 0; 759 } 760 761 int 762 fdopen(dev, flags, mode, p) 763 dev_t dev; 764 int flags; 765 int mode; 766 struct proc *p; 767 { 768 struct fd_softc *fd; 769 struct fd_type *type; 770 771 fd = device_lookup(&fd_cd, FDUNIT(dev)); 772 if (fd == NULL) 773 return (ENXIO); 774 775 type = fd_dev_to_type(fd, dev); 776 if (type == NULL) 777 return ENXIO; 778 779 if ((fd->sc_flags & FD_OPEN) != 0 && 780 memcmp(fd->sc_type, type, sizeof(*type))) 781 return EBUSY; 782 783 fd->sc_type_copy = *type; 784 fd->sc_type = &fd->sc_type_copy; 785 fd->sc_cylin = -1; 786 fd->sc_flags |= FD_OPEN; 787 788 return 0; 789 } 790 791 int 792 fdclose(dev, flags, mode, p) 793 dev_t dev; 794 int flags; 795 int mode; 796 struct proc *p; 797 { 798 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 799 800 fd->sc_flags &= ~FD_OPEN; 801 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 802 return 0; 803 } 804 805 void 806 fdcstart(fdc) 807 struct fdc_softc *fdc; 808 { 809 810 #ifdef DIAGNOSTIC 811 /* only got here if controller's drive queue was inactive; should 812 be in idle state */ 813 if (fdc->sc_state != DEVIDLE) { 814 printf("fdcstart: not idle\n"); 815 return; 816 } 817 #endif 818 (void) fdcintr(fdc); 819 } 820 821 void 822 fdcstatus(dv, n, s) 823 struct device *dv; 824 int n; 825 char *s; 826 { 827 struct fdc_softc *fdc = (void *)dv->dv_parent; 828 char bits[64]; 829 830 if (n == 0) { 831 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 832 (void) fdcresult(fdc); 833 n = 2; 834 } 835 836 printf("%s: %s", dv->dv_xname, s); 837 838 switch (n) { 839 case 0: 840 printf("\n"); 841 break; 842 case 2: 843 printf(" (st0 %s cyl %d)\n", 844 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 845 bits, sizeof(bits)), fdc->sc_status[1]); 846 break; 847 case 7: 848 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 849 NE7_ST0BITS, bits, sizeof(bits))); 850 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 851 NE7_ST1BITS, bits, sizeof(bits))); 852 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 853 NE7_ST2BITS, bits, sizeof(bits))); 854 printf(" cyl %d head %d sec %d)\n", 855 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 856 break; 857 #ifdef DIAGNOSTIC 858 default: 859 printf("\nfdcstatus: weird size"); 860 break; 861 #endif 862 } 863 } 864 865 void 866 fdctimeout(arg) 867 void *arg; 868 { 869 struct fdc_softc *fdc = arg; 870 struct fd_softc *fd = fdc->sc_drives.tqh_first; 871 int s; 872 873 s = splbio(); 874 #ifdef DEBUG 875 log(LOG_ERR,"fdctimeout: state %d\n", fdc->sc_state); 876 #endif 877 fdcstatus(&fd->sc_dev, 0, "timeout"); 878 879 if (BUFQ_FIRST(&fd->sc_q) != NULL) 880 fdc->sc_state++; 881 else 882 fdc->sc_state = DEVIDLE; 883 884 (void) fdcintr(fdc); 885 splx(s); 886 } 887 888 void 889 fdcpseudointr(arg) 890 void *arg; 891 { 892 int s; 893 894 /* Just ensure it has the right spl. */ 895 s = splbio(); 896 (void) fdcintr(arg); 897 splx(s); 898 } 899 900 int 901 fdcintr(arg) 902 void *arg; 903 { 904 struct fdc_softc *fdc = arg; 905 #define st0 fdc->sc_status[0] 906 #define cyl fdc->sc_status[1] 907 struct fd_softc *fd; 908 struct buf *bp; 909 bus_space_tag_t iot = fdc->sc_iot; 910 bus_space_handle_t ioh = fdc->sc_ioh; 911 int read, head, sec, i, nblks; 912 struct fd_type *type; 913 struct ne7_fd_formb *finfo = NULL; 914 915 loop: 916 /* Is there a drive for the controller to do a transfer with? */ 917 fd = fdc->sc_drives.tqh_first; 918 if (fd == NULL) { 919 fdc->sc_state = DEVIDLE; 920 return 1; 921 } 922 923 /* Is there a transfer to this drive? If not, deactivate drive. */ 924 bp = BUFQ_FIRST(&fd->sc_q); 925 if (bp == NULL) { 926 fd->sc_ops = 0; 927 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 928 fd->sc_active = 0; 929 goto loop; 930 } 931 932 if (bp->b_flags & B_FORMAT) 933 finfo = (struct ne7_fd_formb *)bp->b_data; 934 935 switch (fdc->sc_state) { 936 case DEVIDLE: 937 fdc->sc_errors = 0; 938 fd->sc_skip = 0; 939 fd->sc_bcount = bp->b_bcount; 940 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 941 callout_stop(&fd->sc_motoroff_ch); 942 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 943 fdc->sc_state = MOTORWAIT; 944 return 1; 945 } 946 if ((fd->sc_flags & FD_MOTOR) == 0) { 947 /* Turn on the motor, being careful about pairing. */ 948 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 949 if (ofd && ofd->sc_flags & FD_MOTOR) { 950 callout_stop(&ofd->sc_motoroff_ch); 951 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 952 } 953 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 954 fd_set_motor(fdc, 0); 955 fdc->sc_state = MOTORWAIT; 956 /* Allow .25s for motor to stabilize. */ 957 callout_reset(&fd->sc_motoron_ch, hz / 4, 958 fd_motor_on, fd); 959 return 1; 960 } 961 /* Make sure the right drive is selected. */ 962 fd_set_motor(fdc, 0); 963 964 /* fall through */ 965 case DOSEEK: 966 doseek: 967 if (fd->sc_cylin == bp->b_cylinder) 968 goto doio; 969 970 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 971 out_fdc(iot, ioh, fd->sc_type->steprate); 972 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 973 974 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 975 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 976 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 977 978 fd->sc_cylin = -1; 979 fdc->sc_state = SEEKWAIT; 980 981 fd->sc_dk.dk_seek++; 982 disk_busy(&fd->sc_dk); 983 984 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 985 return 1; 986 987 case DOIO: 988 doio: 989 type = fd->sc_type; 990 if (finfo) 991 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 992 (char *)finfo; 993 sec = fd->sc_blkno % type->seccyl; 994 nblks = type->seccyl - sec; 995 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 996 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 997 fd->sc_nblks = nblks; 998 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 999 head = sec / type->sectrac; 1000 sec -= head * type->sectrac; 1001 #ifdef DIAGNOSTIC 1002 {int block; 1003 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1004 if (block != fd->sc_blkno) { 1005 printf("fdcintr: block %d != blkno %d\n", 1006 block, fd->sc_blkno); 1007 #ifdef DDB 1008 Debugger(); 1009 #endif 1010 }} 1011 #endif 1012 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1013 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1014 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1015 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1016 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1017 #ifdef FD_DEBUG 1018 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1019 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1020 head, sec, nblks); 1021 #endif 1022 if (finfo) { 1023 /* formatting */ 1024 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1025 fdc->sc_errors = 4; 1026 fdcretry(fdc); 1027 goto loop; 1028 } 1029 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1030 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1031 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1032 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1033 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1034 } else { 1035 if (read) 1036 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1037 else 1038 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1039 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1040 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1041 out_fdc(iot, ioh, head); 1042 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1043 out_fdc(iot, ioh, type->secsize);/* sector size */ 1044 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1045 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1046 out_fdc(iot, ioh, type->datalen);/* data length */ 1047 } 1048 fdc->sc_state = IOCOMPLETE; 1049 1050 disk_busy(&fd->sc_dk); 1051 1052 /* allow 2 seconds for operation */ 1053 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1054 return 1; /* will return later */ 1055 1056 case SEEKWAIT: 1057 callout_stop(&fdc->sc_timo_ch); 1058 fdc->sc_state = SEEKCOMPLETE; 1059 /* allow 1/50 second for heads to settle */ 1060 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1061 return 1; 1062 1063 case SEEKCOMPLETE: 1064 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1065 1066 /* Make sure seek really happened. */ 1067 out_fdc(iot, ioh, NE7CMD_SENSEI); 1068 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1069 cyl != bp->b_cylinder * fd->sc_type->step) { 1070 #ifdef FD_DEBUG 1071 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1072 #endif 1073 fdcretry(fdc); 1074 goto loop; 1075 } 1076 fd->sc_cylin = bp->b_cylinder; 1077 goto doio; 1078 1079 case IOTIMEDOUT: 1080 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1081 case SEEKTIMEDOUT: 1082 case RECALTIMEDOUT: 1083 case RESETTIMEDOUT: 1084 fdcretry(fdc); 1085 goto loop; 1086 1087 case IOCOMPLETE: /* IO DONE, post-analyze */ 1088 callout_stop(&fdc->sc_timo_ch); 1089 1090 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1091 1092 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1093 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1094 #ifdef FD_DEBUG 1095 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1096 "read failed" : "write failed"); 1097 printf("blkno %d nblks %d\n", 1098 fd->sc_blkno, fd->sc_nblks); 1099 #endif 1100 fdcretry(fdc); 1101 goto loop; 1102 } 1103 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1104 if (fdc->sc_errors) { 1105 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1106 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1107 printf("\n"); 1108 fdc->sc_errors = 0; 1109 } 1110 fd->sc_blkno += fd->sc_nblks; 1111 fd->sc_skip += fd->sc_nbytes; 1112 fd->sc_bcount -= fd->sc_nbytes; 1113 if (!finfo && fd->sc_bcount > 0) { 1114 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1115 goto doseek; 1116 } 1117 fdfinish(fd, bp); 1118 goto loop; 1119 1120 case DORESET: 1121 /* try a reset, keep motor on */ 1122 fd_set_motor(fdc, 1); 1123 delay(100); 1124 fd_set_motor(fdc, 0); 1125 fdc->sc_state = RESETCOMPLETE; 1126 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1127 return 1; /* will return later */ 1128 1129 case RESETCOMPLETE: 1130 callout_stop(&fdc->sc_timo_ch); 1131 /* clear the controller output buffer */ 1132 for (i = 0; i < 4; i++) { 1133 out_fdc(iot, ioh, NE7CMD_SENSEI); 1134 (void) fdcresult(fdc); 1135 } 1136 1137 /* fall through */ 1138 case DORECAL: 1139 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1140 out_fdc(iot, ioh, fd->sc_drive); 1141 fdc->sc_state = RECALWAIT; 1142 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1143 return 1; /* will return later */ 1144 1145 case RECALWAIT: 1146 callout_stop(&fdc->sc_timo_ch); 1147 fdc->sc_state = RECALCOMPLETE; 1148 /* allow 1/30 second for heads to settle */ 1149 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1150 return 1; /* will return later */ 1151 1152 case RECALCOMPLETE: 1153 out_fdc(iot, ioh, NE7CMD_SENSEI); 1154 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1155 #ifdef FD_DEBUG 1156 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1157 #endif 1158 fdcretry(fdc); 1159 goto loop; 1160 } 1161 fd->sc_cylin = 0; 1162 goto doseek; 1163 1164 case MOTORWAIT: 1165 if (fd->sc_flags & FD_MOTOR_WAIT) 1166 return 1; /* time's not up yet */ 1167 goto doseek; 1168 1169 default: 1170 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1171 return 1; 1172 } 1173 #ifdef DIAGNOSTIC 1174 panic("fdcintr: impossible"); 1175 #endif 1176 #undef st0 1177 #undef cyl 1178 } 1179 1180 void 1181 fdcretry(fdc) 1182 struct fdc_softc *fdc; 1183 { 1184 char bits[64]; 1185 struct fd_softc *fd; 1186 struct buf *bp; 1187 1188 fd = fdc->sc_drives.tqh_first; 1189 bp = BUFQ_FIRST(&fd->sc_q); 1190 1191 if (fd->sc_opts & FDOPT_NORETRY) 1192 goto fail; 1193 switch (fdc->sc_errors) { 1194 case 0: 1195 /* try again */ 1196 fdc->sc_state = DOSEEK; 1197 break; 1198 1199 case 1: case 2: case 3: 1200 /* didn't work; try recalibrating */ 1201 fdc->sc_state = DORECAL; 1202 break; 1203 1204 case 4: 1205 /* still no go; reset the bastard */ 1206 fdc->sc_state = DORESET; 1207 break; 1208 1209 default: 1210 fail: 1211 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1212 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1213 fd->sc_skip / FDC_BSIZE, 1214 (struct disklabel *)NULL); 1215 1216 printf(" (st0 %s", 1217 bitmask_snprintf(fdc->sc_status[0], 1218 NE7_ST0BITS, bits, 1219 sizeof(bits))); 1220 printf(" st1 %s", 1221 bitmask_snprintf(fdc->sc_status[1], 1222 NE7_ST1BITS, bits, 1223 sizeof(bits))); 1224 printf(" st2 %s", 1225 bitmask_snprintf(fdc->sc_status[2], 1226 NE7_ST2BITS, bits, 1227 sizeof(bits))); 1228 printf(" cyl %d head %d sec %d)\n", 1229 fdc->sc_status[3], 1230 fdc->sc_status[4], 1231 fdc->sc_status[5]); 1232 } 1233 1234 bp->b_flags |= B_ERROR; 1235 bp->b_error = EIO; 1236 fdfinish(fd, bp); 1237 } 1238 fdc->sc_errors++; 1239 } 1240 1241 int 1242 fdsize(dev) 1243 dev_t dev; 1244 { 1245 1246 /* Swapping to floppies would not make sense. */ 1247 return -1; 1248 } 1249 1250 int 1251 fddump(dev, blkno, va, size) 1252 dev_t dev; 1253 daddr_t blkno; 1254 caddr_t va; 1255 size_t size; 1256 { 1257 1258 /* Not implemented. */ 1259 return ENXIO; 1260 } 1261 1262 int 1263 fdioctl(dev, cmd, addr, flag, p) 1264 dev_t dev; 1265 u_long cmd; 1266 caddr_t addr; 1267 int flag; 1268 struct proc *p; 1269 { 1270 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1271 struct fdformat_parms *form_parms; 1272 struct fdformat_cmd *form_cmd; 1273 struct ne7_fd_formb fd_formb; 1274 struct disklabel buffer; 1275 int error; 1276 unsigned int scratch; 1277 int il[FD_MAX_NSEC + 1]; 1278 register int i, j; 1279 1280 switch (cmd) { 1281 case DIOCGDINFO: 1282 memset(&buffer, 0, sizeof(buffer)); 1283 1284 buffer.d_secpercyl = fd->sc_type->seccyl; 1285 buffer.d_type = DTYPE_FLOPPY; 1286 buffer.d_secsize = FDC_BSIZE; 1287 1288 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1289 return EINVAL; 1290 1291 *(struct disklabel *)addr = buffer; 1292 return 0; 1293 1294 case DIOCWLABEL: 1295 if ((flag & FWRITE) == 0) 1296 return EBADF; 1297 /* XXX do something */ 1298 return 0; 1299 1300 case DIOCWDINFO: 1301 if ((flag & FWRITE) == 0) 1302 return EBADF; 1303 1304 error = setdisklabel(&buffer, (struct disklabel *)addr, 0, NULL); 1305 if (error) 1306 return error; 1307 1308 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1309 return error; 1310 1311 case FDIOCGETFORMAT: 1312 form_parms = (struct fdformat_parms *)addr; 1313 form_parms->fdformat_version = FDFORMAT_VERSION; 1314 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1315 form_parms->ncyl = fd->sc_type->cyls; 1316 form_parms->nspt = fd->sc_type->sectrac; 1317 form_parms->ntrk = fd->sc_type->heads; 1318 form_parms->stepspercyl = fd->sc_type->step; 1319 form_parms->gaplen = fd->sc_type->gap2; 1320 form_parms->fillbyte = fd->sc_type->fillbyte; 1321 form_parms->interleave = fd->sc_type->interleave; 1322 switch (fd->sc_type->rate) { 1323 case FDC_500KBPS: 1324 form_parms->xfer_rate = 500 * 1024; 1325 break; 1326 case FDC_300KBPS: 1327 form_parms->xfer_rate = 300 * 1024; 1328 break; 1329 case FDC_250KBPS: 1330 form_parms->xfer_rate = 250 * 1024; 1331 break; 1332 default: 1333 return EINVAL; 1334 } 1335 return 0; 1336 1337 case FDIOCSETFORMAT: 1338 if((flag & FWRITE) == 0) 1339 return EBADF; /* must be opened for writing */ 1340 form_parms = (struct fdformat_parms *)addr; 1341 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1342 return EINVAL; /* wrong version of formatting prog */ 1343 1344 scratch = form_parms->nbps >> 7; 1345 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1346 scratch & ~(1 << (ffs(scratch)-1))) 1347 /* not a power-of-two multiple of 128 */ 1348 return EINVAL; 1349 1350 switch (form_parms->xfer_rate) { 1351 case 500 * 1024: 1352 fd->sc_type->rate = FDC_500KBPS; 1353 break; 1354 case 300 * 1024: 1355 fd->sc_type->rate = FDC_300KBPS; 1356 break; 1357 case 250 * 1024: 1358 fd->sc_type->rate = FDC_250KBPS; 1359 break; 1360 default: 1361 return EINVAL; 1362 } 1363 1364 if (form_parms->nspt > FD_MAX_NSEC || 1365 form_parms->fillbyte > 0xff || 1366 form_parms->interleave > 0xff) 1367 return EINVAL; 1368 fd->sc_type->sectrac = form_parms->nspt; 1369 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1370 return EINVAL; 1371 fd->sc_type->heads = form_parms->ntrk; 1372 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1373 fd->sc_type->secsize = ffs(scratch)-1; 1374 fd->sc_type->gap2 = form_parms->gaplen; 1375 fd->sc_type->cyls = form_parms->ncyl; 1376 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1377 form_parms->nbps / DEV_BSIZE; 1378 fd->sc_type->step = form_parms->stepspercyl; 1379 fd->sc_type->fillbyte = form_parms->fillbyte; 1380 fd->sc_type->interleave = form_parms->interleave; 1381 return 0; 1382 1383 case FDIOCFORMAT_TRACK: 1384 if((flag & FWRITE) == 0) 1385 return EBADF; /* must be opened for writing */ 1386 form_cmd = (struct fdformat_cmd *)addr; 1387 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1388 return EINVAL; /* wrong version of formatting prog */ 1389 1390 if (form_cmd->head >= fd->sc_type->heads || 1391 form_cmd->cylinder >= fd->sc_type->cyls) { 1392 return EINVAL; 1393 } 1394 1395 fd_formb.head = form_cmd->head; 1396 fd_formb.cyl = form_cmd->cylinder; 1397 fd_formb.transfer_rate = fd->sc_type->rate; 1398 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 1399 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 1400 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 1401 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 1402 1403 memset(il, 0, sizeof il); 1404 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 1405 while (il[(j%fd_formb.fd_formb_nsecs)+1]) 1406 j++; 1407 il[(j%fd_formb.fd_formb_nsecs)+1] = i; 1408 j += fd->sc_type->interleave; 1409 } 1410 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 1411 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 1412 fd_formb.fd_formb_headno(i) = form_cmd->head; 1413 fd_formb.fd_formb_secno(i) = il[i+1]; 1414 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 1415 } 1416 1417 return fdformat(dev, &fd_formb, p); 1418 1419 case FDIOCGETOPTS: /* get drive options */ 1420 *(int *)addr = fd->sc_opts; 1421 return 0; 1422 1423 case FDIOCSETOPTS: /* set drive options */ 1424 fd->sc_opts = *(int *)addr; 1425 return 0; 1426 1427 default: 1428 return ENOTTY; 1429 } 1430 1431 #ifdef DIAGNOSTIC 1432 panic("fdioctl: impossible"); 1433 #endif 1434 } 1435 1436 int 1437 fdformat(dev, finfo, p) 1438 dev_t dev; 1439 struct ne7_fd_formb *finfo; 1440 struct proc *p; 1441 { 1442 int rv = 0, s; 1443 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1444 struct fd_type *type = fd->sc_type; 1445 struct buf *bp; 1446 1447 /* set up a buffer header for fdstrategy() */ 1448 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1449 if(bp == 0) 1450 return ENOBUFS; 1451 PHOLD(p); 1452 memset((void *)bp, 0, sizeof(struct buf)); 1453 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1454 bp->b_proc = p; 1455 bp->b_dev = dev; 1456 1457 /* 1458 * calculate a fake blkno, so fdstrategy() would initiate a 1459 * seek to the requested cylinder 1460 */ 1461 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1462 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1463 1464 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1465 bp->b_data = (caddr_t)finfo; 1466 1467 #ifdef DEBUG 1468 printf("fdformat: blkno %x count %lx\n", bp->b_blkno, bp->b_bcount); 1469 #endif 1470 1471 /* now do the format */ 1472 fdstrategy(bp); 1473 1474 /* ...and wait for it to complete */ 1475 s = splbio(); 1476 while(!(bp->b_flags & B_DONE)) { 1477 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1478 if (rv == EWOULDBLOCK) 1479 break; 1480 } 1481 splx(s); 1482 1483 if (rv == EWOULDBLOCK) { 1484 /* timed out */ 1485 rv = EIO; 1486 biodone(bp); 1487 } 1488 if(bp->b_flags & B_ERROR) { 1489 rv = bp->b_error; 1490 } 1491 PRELE(p); 1492 free(bp, M_TEMP); 1493 return rv; 1494 } 1495 1496 /* 1497 * Mountroot hook: prompt the user to enter the root file system 1498 * floppy. 1499 */ 1500 void 1501 fd_mountroot_hook(dev) 1502 struct device *dev; 1503 { 1504 int c; 1505 1506 printf("Insert filesystem floppy and press return."); 1507 cnpollc(1); 1508 for (;;) { 1509 c = cngetc(); 1510 if ((c == '\r') || (c == '\n')) { 1511 printf("\n"); 1512 break; 1513 } 1514 } 1515 cnpollc(0); 1516 } 1517