1 /* $NetBSD: fd.c,v 1.12 2001/01/08 02:03:47 fvdl 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) && !defined(prep) 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 bus_space_tag_t iot; 308 bus_space_handle_t ioh; 309 #if defined(i386) 310 int type; 311 #endif 312 313 iot = fdc->sc_iot; 314 ioh = fdc->sc_ioh; 315 callout_init(&fdc->sc_timo_ch); 316 callout_init(&fdc->sc_intr_ch); 317 318 fdc->sc_state = DEVIDLE; 319 TAILQ_INIT(&fdc->sc_drives); 320 321 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 322 323 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 324 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 325 printf("%s: can't set up ISA DMA map\n", 326 fdc->sc_dev.dv_xname); 327 return; 328 } 329 330 /* 331 * Reset the controller to get it into a known state. Not all 332 * probes necessarily need do this to discover the controller up 333 * front, so don't assume anything. 334 */ 335 336 bus_space_write_1(iot, ioh, fdout, 0); 337 delay(100); 338 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 339 340 /* see if it can handle a command */ 341 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 342 printf ("%s: can't reset controller\n", 343 fdc->sc_dev.dv_xname); 344 return; 345 } 346 out_fdc(iot, ioh, 0xdf); 347 out_fdc(iot, ioh, 2); 348 349 350 #if defined(i386) 351 /* 352 * The NVRAM info only tells us about the first two disks on the 353 * `primary' floppy controller. 354 */ 355 if (fdc->sc_dev.dv_unit == 0) 356 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 357 else 358 type = -1; 359 #endif /* i386 */ 360 361 /* physical limit: four drives per controller. */ 362 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 363 #if defined(i386) 364 if (type >= 0 && fa.fa_drive < 2) 365 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 366 type, fa.fa_drive); 367 else 368 fa.fa_deftype = NULL; /* unknown */ 369 #else 370 /* 371 * Default to 1.44MB on Alpha and BeBox. How do we tell 372 * on these platforms? 373 */ 374 fa.fa_deftype = &fd_types[0]; 375 #endif /* i386 */ 376 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 377 } 378 } 379 380 int 381 fdprobe(parent, match, aux) 382 struct device *parent; 383 struct cfdata *match; 384 void *aux; 385 { 386 struct fdc_softc *fdc = (void *)parent; 387 struct cfdata *cf = match; 388 struct fdc_attach_args *fa = aux; 389 int drive = fa->fa_drive; 390 bus_space_tag_t iot = fdc->sc_iot; 391 bus_space_handle_t ioh = fdc->sc_ioh; 392 int n; 393 394 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 395 cf->cf_loc[FDCCF_DRIVE] != drive) 396 return 0; 397 /* 398 * XXX 399 * This is to work around some odd interactions between this driver 400 * and SMC Ethernet cards. 401 */ 402 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 403 return 0; 404 405 /* select drive and turn on motor */ 406 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 407 /* wait for motor to spin up */ 408 delay(250000); 409 out_fdc(iot, ioh, NE7CMD_RECAL); 410 out_fdc(iot, ioh, drive); 411 /* wait for recalibrate */ 412 delay(2000000); 413 out_fdc(iot, ioh, NE7CMD_SENSEI); 414 n = fdcresult(fdc); 415 #ifdef FD_DEBUG 416 { 417 int i; 418 printf("fdprobe: status"); 419 for (i = 0; i < n; i++) 420 printf(" %x", fdc->sc_status[i]); 421 printf("\n"); 422 } 423 #endif 424 /* turn off motor */ 425 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 426 427 #if defined(bebox) /* XXX What is this about? --thorpej@netbsd.org */ 428 if (n != 2 || (fdc->sc_status[1] != 0)) 429 return 0; 430 #else 431 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 432 return 0; 433 #endif /* bebox */ 434 435 return 1; 436 } 437 438 /* 439 * Controller is working, and drive responded. Attach it. 440 */ 441 void 442 fdattach(parent, self, aux) 443 struct device *parent, *self; 444 void *aux; 445 { 446 struct fdc_softc *fdc = (void *)parent; 447 struct fd_softc *fd = (void *)self; 448 struct fdc_attach_args *fa = aux; 449 struct fd_type *type = fa->fa_deftype; 450 int drive = fa->fa_drive; 451 452 callout_init(&fd->sc_motoron_ch); 453 callout_init(&fd->sc_motoroff_ch); 454 455 /* XXX Allow `flags' to override device type? */ 456 457 if (type) 458 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 459 type->cyls, type->heads, type->sectrac); 460 else 461 printf(": density unknown\n"); 462 463 BUFQ_INIT(&fd->sc_q); 464 fd->sc_cylin = -1; 465 fd->sc_drive = drive; 466 fd->sc_deftype = type; 467 fdc->sc_fd[drive] = fd; 468 469 /* 470 * Initialize and attach the disk structure. 471 */ 472 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 473 fd->sc_dk.dk_driver = &fddkdriver; 474 disk_attach(&fd->sc_dk); 475 476 /* 477 * Establish a mountroot hook. 478 */ 479 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 480 481 /* Needed to power off if the motor is on when we halt. */ 482 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 483 484 #if NRND > 0 485 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 486 RND_TYPE_DISK, 0); 487 #endif 488 } 489 490 #if defined(i386) 491 /* 492 * Translate nvram type into internal data structure. Return NULL for 493 * none/unknown/unusable. 494 */ 495 struct fd_type * 496 fd_nvtotype(fdc, nvraminfo, drive) 497 char *fdc; 498 int nvraminfo, drive; 499 { 500 int type; 501 502 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 503 switch (type) { 504 case NVRAM_DISKETTE_NONE: 505 return NULL; 506 case NVRAM_DISKETTE_12M: 507 return &fd_types[1]; 508 case NVRAM_DISKETTE_TYPE5: 509 case NVRAM_DISKETTE_TYPE6: 510 /* XXX We really ought to handle 2.88MB format. */ 511 case NVRAM_DISKETTE_144M: 512 #if NMCA > 0 513 if (MCA_system) 514 return &mca_fd_types[0]; 515 else 516 #endif /* NMCA > 0 */ 517 return &fd_types[0]; 518 case NVRAM_DISKETTE_360K: 519 return &fd_types[3]; 520 case NVRAM_DISKETTE_720K: 521 #if NMCA > 0 522 if (MCA_system) 523 return &mca_fd_types[1]; 524 else 525 #endif /* NMCA > 0 */ 526 return &fd_types[4]; 527 default: 528 printf("%s: drive %d: unknown device type 0x%x\n", 529 fdc, drive, type); 530 return NULL; 531 } 532 } 533 #endif /* i386 */ 534 535 __inline struct fd_type * 536 fd_dev_to_type(fd, dev) 537 struct fd_softc *fd; 538 dev_t dev; 539 { 540 int type = FDTYPE(dev); 541 542 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 543 return NULL; 544 return type ? &fd_types[type - 1] : fd->sc_deftype; 545 } 546 547 void 548 fdstrategy(bp) 549 register struct buf *bp; /* IO operation to perform */ 550 { 551 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 552 int sz; 553 int s; 554 555 /* Valid unit, controller, and request? */ 556 if (bp->b_blkno < 0 || 557 ((bp->b_bcount % FDC_BSIZE) != 0 && 558 (bp->b_flags & B_FORMAT) == 0)) { 559 bp->b_error = EINVAL; 560 goto bad; 561 } 562 563 /* If it's a null transfer, return immediately. */ 564 if (bp->b_bcount == 0) 565 goto done; 566 567 sz = howmany(bp->b_bcount, FDC_BSIZE); 568 569 if (bp->b_blkno + sz > fd->sc_type->size) { 570 sz = fd->sc_type->size - bp->b_blkno; 571 if (sz == 0) { 572 /* If exactly at end of disk, return EOF. */ 573 goto done; 574 } 575 if (sz < 0) { 576 /* If past end of disk, return EINVAL. */ 577 bp->b_error = EINVAL; 578 goto bad; 579 } 580 /* Otherwise, truncate request. */ 581 bp->b_bcount = sz << DEV_BSHIFT; 582 } 583 584 bp->b_rawblkno = bp->b_blkno; 585 bp->b_cylinder = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 586 587 #ifdef FD_DEBUG 588 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld sz %d\n", 589 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 590 #endif 591 592 /* Queue transfer on drive, activate drive and controller if idle. */ 593 s = splbio(); 594 disksort_cylinder(&fd->sc_q, bp); 595 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 596 if (fd->sc_active == 0) 597 fdstart(fd); 598 #ifdef DIAGNOSTIC 599 else { 600 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 601 if (fdc->sc_state == DEVIDLE) { 602 printf("fdstrategy: controller inactive\n"); 603 fdcstart(fdc); 604 } 605 } 606 #endif 607 splx(s); 608 return; 609 610 bad: 611 bp->b_flags |= B_ERROR; 612 done: 613 /* Toss transfer; we're done early. */ 614 bp->b_resid = bp->b_bcount; 615 biodone(bp); 616 } 617 618 void 619 fdstart(fd) 620 struct fd_softc *fd; 621 { 622 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 623 int active = fdc->sc_drives.tqh_first != 0; 624 625 /* Link into controller queue. */ 626 fd->sc_active = 1; 627 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 628 629 /* If controller not already active, start it. */ 630 if (!active) 631 fdcstart(fdc); 632 } 633 634 void 635 fdfinish(fd, bp) 636 struct fd_softc *fd; 637 struct buf *bp; 638 { 639 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 640 641 /* 642 * Move this drive to the end of the queue to give others a `fair' 643 * chance. We only force a switch if N operations are completed while 644 * another drive is waiting to be serviced, since there is a long motor 645 * startup delay whenever we switch. 646 */ 647 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 648 fd->sc_ops = 0; 649 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 650 if (BUFQ_NEXT(bp) != NULL) 651 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 652 else 653 fd->sc_active = 0; 654 } 655 bp->b_resid = fd->sc_bcount; 656 fd->sc_skip = 0; 657 BUFQ_REMOVE(&fd->sc_q, bp); 658 659 #if NRND > 0 660 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 661 #endif 662 663 biodone(bp); 664 /* turn off motor 5s from now */ 665 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 666 fdc->sc_state = DEVIDLE; 667 } 668 669 int 670 fdread(dev, uio, flags) 671 dev_t dev; 672 struct uio *uio; 673 int flags; 674 { 675 676 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 677 } 678 679 int 680 fdwrite(dev, uio, flags) 681 dev_t dev; 682 struct uio *uio; 683 int flags; 684 { 685 686 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 687 } 688 689 void 690 fd_set_motor(fdc, reset) 691 struct fdc_softc *fdc; 692 int reset; 693 { 694 struct fd_softc *fd; 695 u_char status; 696 int n; 697 698 if ((fd = fdc->sc_drives.tqh_first) != NULL) 699 status = fd->sc_drive; 700 else 701 status = 0; 702 if (!reset) 703 status |= FDO_FRST | FDO_FDMAEN; 704 for (n = 0; n < 4; n++) 705 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 706 status |= FDO_MOEN(n); 707 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 708 } 709 710 void 711 fd_motor_off(arg) 712 void *arg; 713 { 714 struct fd_softc *fd = arg; 715 int s; 716 717 s = splbio(); 718 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 719 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 720 splx(s); 721 } 722 723 void 724 fd_motor_on(arg) 725 void *arg; 726 { 727 struct fd_softc *fd = arg; 728 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 729 int s; 730 731 s = splbio(); 732 fd->sc_flags &= ~FD_MOTOR_WAIT; 733 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 734 (void) fdcintr(fdc); 735 splx(s); 736 } 737 738 int 739 fdcresult(fdc) 740 struct fdc_softc *fdc; 741 { 742 bus_space_tag_t iot = fdc->sc_iot; 743 bus_space_handle_t ioh = fdc->sc_ioh; 744 u_char i; 745 int j = 100000, 746 n = 0; 747 748 for (; j; j--) { 749 i = bus_space_read_1(iot, ioh, fdsts) & 750 (NE7_DIO | NE7_RQM | NE7_CB); 751 if (i == NE7_RQM) 752 return n; 753 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 754 if (n >= sizeof(fdc->sc_status)) { 755 log(LOG_ERR, "fdcresult: overrun\n"); 756 return -1; 757 } 758 fdc->sc_status[n++] = 759 bus_space_read_1(iot, ioh, fddata); 760 } 761 delay(10); 762 } 763 log(LOG_ERR, "fdcresult: timeout\n"); 764 return -1; 765 } 766 767 int 768 out_fdc(iot, ioh, x) 769 bus_space_tag_t iot; 770 bus_space_handle_t ioh; 771 u_char x; 772 { 773 int i = 100000; 774 775 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_DIO) && i-- > 0); 776 if (i <= 0) 777 return -1; 778 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0); 779 if (i <= 0) 780 return -1; 781 bus_space_write_1(iot, ioh, fddata, x); 782 return 0; 783 } 784 785 int 786 fdopen(dev, flags, mode, p) 787 dev_t dev; 788 int flags; 789 int mode; 790 struct proc *p; 791 { 792 struct fd_softc *fd; 793 struct fd_type *type; 794 795 fd = device_lookup(&fd_cd, FDUNIT(dev)); 796 if (fd == NULL) 797 return (ENXIO); 798 799 type = fd_dev_to_type(fd, dev); 800 if (type == NULL) 801 return ENXIO; 802 803 if ((fd->sc_flags & FD_OPEN) != 0 && 804 memcmp(fd->sc_type, type, sizeof(*type))) 805 return EBUSY; 806 807 fd->sc_type_copy = *type; 808 fd->sc_type = &fd->sc_type_copy; 809 fd->sc_cylin = -1; 810 fd->sc_flags |= FD_OPEN; 811 812 return 0; 813 } 814 815 int 816 fdclose(dev, flags, mode, p) 817 dev_t dev; 818 int flags; 819 int mode; 820 struct proc *p; 821 { 822 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 823 824 fd->sc_flags &= ~FD_OPEN; 825 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 826 return 0; 827 } 828 829 void 830 fdcstart(fdc) 831 struct fdc_softc *fdc; 832 { 833 834 #ifdef DIAGNOSTIC 835 /* only got here if controller's drive queue was inactive; should 836 be in idle state */ 837 if (fdc->sc_state != DEVIDLE) { 838 printf("fdcstart: not idle\n"); 839 return; 840 } 841 #endif 842 (void) fdcintr(fdc); 843 } 844 845 void 846 fdcstatus(dv, n, s) 847 struct device *dv; 848 int n; 849 char *s; 850 { 851 struct fdc_softc *fdc = (void *)dv->dv_parent; 852 char bits[64]; 853 854 if (n == 0) { 855 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 856 (void) fdcresult(fdc); 857 n = 2; 858 } 859 860 printf("%s: %s", dv->dv_xname, s); 861 862 switch (n) { 863 case 0: 864 printf("\n"); 865 break; 866 case 2: 867 printf(" (st0 %s cyl %d)\n", 868 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 869 bits, sizeof(bits)), fdc->sc_status[1]); 870 break; 871 case 7: 872 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 873 NE7_ST0BITS, bits, sizeof(bits))); 874 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 875 NE7_ST1BITS, bits, sizeof(bits))); 876 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 877 NE7_ST2BITS, bits, sizeof(bits))); 878 printf(" cyl %d head %d sec %d)\n", 879 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 880 break; 881 #ifdef DIAGNOSTIC 882 default: 883 printf("\nfdcstatus: weird size"); 884 break; 885 #endif 886 } 887 } 888 889 void 890 fdctimeout(arg) 891 void *arg; 892 { 893 struct fdc_softc *fdc = arg; 894 struct fd_softc *fd = fdc->sc_drives.tqh_first; 895 int s; 896 897 s = splbio(); 898 #ifdef DEBUG 899 log(LOG_ERR,"fdctimeout: state %d\n", fdc->sc_state); 900 #endif 901 fdcstatus(&fd->sc_dev, 0, "timeout"); 902 903 if (BUFQ_FIRST(&fd->sc_q) != NULL) 904 fdc->sc_state++; 905 else 906 fdc->sc_state = DEVIDLE; 907 908 (void) fdcintr(fdc); 909 splx(s); 910 } 911 912 void 913 fdcpseudointr(arg) 914 void *arg; 915 { 916 int s; 917 918 /* Just ensure it has the right spl. */ 919 s = splbio(); 920 (void) fdcintr(arg); 921 splx(s); 922 } 923 924 int 925 fdcintr(arg) 926 void *arg; 927 { 928 struct fdc_softc *fdc = arg; 929 #define st0 fdc->sc_status[0] 930 #define cyl fdc->sc_status[1] 931 struct fd_softc *fd; 932 struct buf *bp; 933 bus_space_tag_t iot = fdc->sc_iot; 934 bus_space_handle_t ioh = fdc->sc_ioh; 935 int read, head, sec, i, nblks; 936 struct fd_type *type; 937 struct ne7_fd_formb *finfo = NULL; 938 939 loop: 940 /* Is there a drive for the controller to do a transfer with? */ 941 fd = fdc->sc_drives.tqh_first; 942 if (fd == NULL) { 943 fdc->sc_state = DEVIDLE; 944 return 1; 945 } 946 947 /* Is there a transfer to this drive? If not, deactivate drive. */ 948 bp = BUFQ_FIRST(&fd->sc_q); 949 if (bp == NULL) { 950 fd->sc_ops = 0; 951 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 952 fd->sc_active = 0; 953 goto loop; 954 } 955 956 if (bp->b_flags & B_FORMAT) 957 finfo = (struct ne7_fd_formb *)bp->b_data; 958 959 switch (fdc->sc_state) { 960 case DEVIDLE: 961 fdc->sc_errors = 0; 962 fd->sc_skip = 0; 963 fd->sc_bcount = bp->b_bcount; 964 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 965 callout_stop(&fd->sc_motoroff_ch); 966 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 967 fdc->sc_state = MOTORWAIT; 968 return 1; 969 } 970 if ((fd->sc_flags & FD_MOTOR) == 0) { 971 /* Turn on the motor, being careful about pairing. */ 972 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 973 if (ofd && ofd->sc_flags & FD_MOTOR) { 974 callout_stop(&ofd->sc_motoroff_ch); 975 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 976 } 977 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 978 fd_set_motor(fdc, 0); 979 fdc->sc_state = MOTORWAIT; 980 /* Allow .25s for motor to stabilize. */ 981 callout_reset(&fd->sc_motoron_ch, hz / 4, 982 fd_motor_on, fd); 983 return 1; 984 } 985 /* Make sure the right drive is selected. */ 986 fd_set_motor(fdc, 0); 987 988 /* fall through */ 989 case DOSEEK: 990 doseek: 991 if (fd->sc_cylin == bp->b_cylinder) 992 goto doio; 993 994 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 995 out_fdc(iot, ioh, fd->sc_type->steprate); 996 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 997 998 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 999 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1000 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1001 1002 fd->sc_cylin = -1; 1003 fdc->sc_state = SEEKWAIT; 1004 1005 fd->sc_dk.dk_seek++; 1006 disk_busy(&fd->sc_dk); 1007 1008 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1009 return 1; 1010 1011 case DOIO: 1012 doio: 1013 type = fd->sc_type; 1014 if (finfo) 1015 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1016 (char *)finfo; 1017 sec = fd->sc_blkno % type->seccyl; 1018 nblks = type->seccyl - sec; 1019 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1020 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1021 fd->sc_nblks = nblks; 1022 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1023 head = sec / type->sectrac; 1024 sec -= head * type->sectrac; 1025 #ifdef DIAGNOSTIC 1026 {int block; 1027 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1028 if (block != fd->sc_blkno) { 1029 printf("fdcintr: block %d != blkno %d\n", 1030 block, fd->sc_blkno); 1031 #ifdef DDB 1032 Debugger(); 1033 #endif 1034 }} 1035 #endif 1036 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1037 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1038 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1039 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1040 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1041 #ifdef FD_DEBUG 1042 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1043 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1044 head, sec, nblks); 1045 #endif 1046 if (finfo) { 1047 /* formatting */ 1048 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1049 fdc->sc_errors = 4; 1050 fdcretry(fdc); 1051 goto loop; 1052 } 1053 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1054 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1055 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1056 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1057 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1058 } else { 1059 if (read) 1060 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1061 else 1062 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1063 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1064 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1065 out_fdc(iot, ioh, head); 1066 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1067 out_fdc(iot, ioh, type->secsize);/* sector size */ 1068 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1069 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1070 out_fdc(iot, ioh, type->datalen);/* data length */ 1071 } 1072 fdc->sc_state = IOCOMPLETE; 1073 1074 disk_busy(&fd->sc_dk); 1075 1076 /* allow 2 seconds for operation */ 1077 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1078 return 1; /* will return later */ 1079 1080 case SEEKWAIT: 1081 callout_stop(&fdc->sc_timo_ch); 1082 fdc->sc_state = SEEKCOMPLETE; 1083 /* allow 1/50 second for heads to settle */ 1084 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1085 return 1; 1086 1087 case SEEKCOMPLETE: 1088 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1089 1090 /* Make sure seek really happened. */ 1091 out_fdc(iot, ioh, NE7CMD_SENSEI); 1092 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1093 cyl != bp->b_cylinder * fd->sc_type->step) { 1094 #ifdef FD_DEBUG 1095 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1096 #endif 1097 fdcretry(fdc); 1098 goto loop; 1099 } 1100 fd->sc_cylin = bp->b_cylinder; 1101 goto doio; 1102 1103 case IOTIMEDOUT: 1104 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1105 case SEEKTIMEDOUT: 1106 case RECALTIMEDOUT: 1107 case RESETTIMEDOUT: 1108 fdcretry(fdc); 1109 goto loop; 1110 1111 case IOCOMPLETE: /* IO DONE, post-analyze */ 1112 callout_stop(&fdc->sc_timo_ch); 1113 1114 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1115 1116 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1117 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1118 #ifdef FD_DEBUG 1119 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1120 "read failed" : "write failed"); 1121 printf("blkno %d nblks %d\n", 1122 fd->sc_blkno, fd->sc_nblks); 1123 #endif 1124 fdcretry(fdc); 1125 goto loop; 1126 } 1127 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1128 if (fdc->sc_errors) { 1129 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1130 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1131 printf("\n"); 1132 fdc->sc_errors = 0; 1133 } 1134 fd->sc_blkno += fd->sc_nblks; 1135 fd->sc_skip += fd->sc_nbytes; 1136 fd->sc_bcount -= fd->sc_nbytes; 1137 if (!finfo && fd->sc_bcount > 0) { 1138 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1139 goto doseek; 1140 } 1141 fdfinish(fd, bp); 1142 goto loop; 1143 1144 case DORESET: 1145 /* try a reset, keep motor on */ 1146 fd_set_motor(fdc, 1); 1147 delay(100); 1148 fd_set_motor(fdc, 0); 1149 fdc->sc_state = RESETCOMPLETE; 1150 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1151 return 1; /* will return later */ 1152 1153 case RESETCOMPLETE: 1154 callout_stop(&fdc->sc_timo_ch); 1155 /* clear the controller output buffer */ 1156 for (i = 0; i < 4; i++) { 1157 out_fdc(iot, ioh, NE7CMD_SENSEI); 1158 (void) fdcresult(fdc); 1159 } 1160 1161 /* fall through */ 1162 case DORECAL: 1163 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1164 out_fdc(iot, ioh, fd->sc_drive); 1165 fdc->sc_state = RECALWAIT; 1166 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1167 return 1; /* will return later */ 1168 1169 case RECALWAIT: 1170 callout_stop(&fdc->sc_timo_ch); 1171 fdc->sc_state = RECALCOMPLETE; 1172 /* allow 1/30 second for heads to settle */ 1173 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1174 return 1; /* will return later */ 1175 1176 case RECALCOMPLETE: 1177 out_fdc(iot, ioh, NE7CMD_SENSEI); 1178 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1179 #ifdef FD_DEBUG 1180 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1181 #endif 1182 fdcretry(fdc); 1183 goto loop; 1184 } 1185 fd->sc_cylin = 0; 1186 goto doseek; 1187 1188 case MOTORWAIT: 1189 if (fd->sc_flags & FD_MOTOR_WAIT) 1190 return 1; /* time's not up yet */ 1191 goto doseek; 1192 1193 default: 1194 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1195 return 1; 1196 } 1197 #ifdef DIAGNOSTIC 1198 panic("fdcintr: impossible"); 1199 #endif 1200 #undef st0 1201 #undef cyl 1202 } 1203 1204 void 1205 fdcretry(fdc) 1206 struct fdc_softc *fdc; 1207 { 1208 char bits[64]; 1209 struct fd_softc *fd; 1210 struct buf *bp; 1211 1212 fd = fdc->sc_drives.tqh_first; 1213 bp = BUFQ_FIRST(&fd->sc_q); 1214 1215 if (fd->sc_opts & FDOPT_NORETRY) 1216 goto fail; 1217 switch (fdc->sc_errors) { 1218 case 0: 1219 /* try again */ 1220 fdc->sc_state = DOSEEK; 1221 break; 1222 1223 case 1: case 2: case 3: 1224 /* didn't work; try recalibrating */ 1225 fdc->sc_state = DORECAL; 1226 break; 1227 1228 case 4: 1229 /* still no go; reset the bastard */ 1230 fdc->sc_state = DORESET; 1231 break; 1232 1233 default: 1234 fail: 1235 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1236 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1237 fd->sc_skip / FDC_BSIZE, 1238 (struct disklabel *)NULL); 1239 1240 printf(" (st0 %s", 1241 bitmask_snprintf(fdc->sc_status[0], 1242 NE7_ST0BITS, bits, 1243 sizeof(bits))); 1244 printf(" st1 %s", 1245 bitmask_snprintf(fdc->sc_status[1], 1246 NE7_ST1BITS, bits, 1247 sizeof(bits))); 1248 printf(" st2 %s", 1249 bitmask_snprintf(fdc->sc_status[2], 1250 NE7_ST2BITS, bits, 1251 sizeof(bits))); 1252 printf(" cyl %d head %d sec %d)\n", 1253 fdc->sc_status[3], 1254 fdc->sc_status[4], 1255 fdc->sc_status[5]); 1256 } 1257 1258 bp->b_flags |= B_ERROR; 1259 bp->b_error = EIO; 1260 fdfinish(fd, bp); 1261 } 1262 fdc->sc_errors++; 1263 } 1264 1265 int 1266 fdsize(dev) 1267 dev_t dev; 1268 { 1269 1270 /* Swapping to floppies would not make sense. */ 1271 return -1; 1272 } 1273 1274 int 1275 fddump(dev, blkno, va, size) 1276 dev_t dev; 1277 daddr_t blkno; 1278 caddr_t va; 1279 size_t size; 1280 { 1281 1282 /* Not implemented. */ 1283 return ENXIO; 1284 } 1285 1286 int 1287 fdioctl(dev, cmd, addr, flag, p) 1288 dev_t dev; 1289 u_long cmd; 1290 caddr_t addr; 1291 int flag; 1292 struct proc *p; 1293 { 1294 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1295 struct fdformat_parms *form_parms; 1296 struct fdformat_cmd *form_cmd; 1297 struct ne7_fd_formb *fd_formb; 1298 struct disklabel buffer; 1299 int error; 1300 unsigned int scratch; 1301 int il[FD_MAX_NSEC + 1]; 1302 register int i, j; 1303 #ifdef __HAVE_OLD_DISKLABEL 1304 struct disklabel newlabel; 1305 #endif 1306 1307 switch (cmd) { 1308 case DIOCGDINFO: 1309 #ifdef __HAVE_OLD_DISKLABEL 1310 case ODIOCGDINFO: 1311 #endif 1312 memset(&buffer, 0, sizeof(buffer)); 1313 1314 buffer.d_secpercyl = fd->sc_type->seccyl; 1315 buffer.d_type = DTYPE_FLOPPY; 1316 buffer.d_secsize = FDC_BSIZE; 1317 1318 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1319 return EINVAL; 1320 1321 #ifdef __HAVE_OLD_DISKLABEL 1322 if (cmd == ODIOCGDINFO) { 1323 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1324 return ENOTTY; 1325 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1326 } else 1327 #endif 1328 *(struct disklabel *)addr = buffer; 1329 return 0; 1330 1331 case DIOCWLABEL: 1332 if ((flag & FWRITE) == 0) 1333 return EBADF; 1334 /* XXX do something */ 1335 return 0; 1336 1337 case DIOCWDINFO: 1338 #ifdef __HAVE_OLD_DISKLABEL 1339 case ODIOCWDINFO: 1340 #endif 1341 { 1342 struct disklabel *lp; 1343 1344 if ((flag & FWRITE) == 0) 1345 return EBADF; 1346 #ifdef __HAVE_OLD_DISKLABEL 1347 if (cmd == ODIOCWDINFO) { 1348 memset(&newlabel, 0, sizeof newlabel); 1349 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1350 lp = &newlabel; 1351 } else 1352 #endif 1353 lp = (struct disklabel *)addr; 1354 1355 error = setdisklabel(&buffer, lp, 0, NULL); 1356 if (error) 1357 return error; 1358 1359 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1360 return error; 1361 } 1362 1363 case FDIOCGETFORMAT: 1364 form_parms = (struct fdformat_parms *)addr; 1365 form_parms->fdformat_version = FDFORMAT_VERSION; 1366 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1367 form_parms->ncyl = fd->sc_type->cyls; 1368 form_parms->nspt = fd->sc_type->sectrac; 1369 form_parms->ntrk = fd->sc_type->heads; 1370 form_parms->stepspercyl = fd->sc_type->step; 1371 form_parms->gaplen = fd->sc_type->gap2; 1372 form_parms->fillbyte = fd->sc_type->fillbyte; 1373 form_parms->interleave = fd->sc_type->interleave; 1374 switch (fd->sc_type->rate) { 1375 case FDC_500KBPS: 1376 form_parms->xfer_rate = 500 * 1024; 1377 break; 1378 case FDC_300KBPS: 1379 form_parms->xfer_rate = 300 * 1024; 1380 break; 1381 case FDC_250KBPS: 1382 form_parms->xfer_rate = 250 * 1024; 1383 break; 1384 default: 1385 return EINVAL; 1386 } 1387 return 0; 1388 1389 case FDIOCSETFORMAT: 1390 if((flag & FWRITE) == 0) 1391 return EBADF; /* must be opened for writing */ 1392 form_parms = (struct fdformat_parms *)addr; 1393 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1394 return EINVAL; /* wrong version of formatting prog */ 1395 1396 scratch = form_parms->nbps >> 7; 1397 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1398 scratch & ~(1 << (ffs(scratch)-1))) 1399 /* not a power-of-two multiple of 128 */ 1400 return EINVAL; 1401 1402 switch (form_parms->xfer_rate) { 1403 case 500 * 1024: 1404 fd->sc_type->rate = FDC_500KBPS; 1405 break; 1406 case 300 * 1024: 1407 fd->sc_type->rate = FDC_300KBPS; 1408 break; 1409 case 250 * 1024: 1410 fd->sc_type->rate = FDC_250KBPS; 1411 break; 1412 default: 1413 return EINVAL; 1414 } 1415 1416 if (form_parms->nspt > FD_MAX_NSEC || 1417 form_parms->fillbyte > 0xff || 1418 form_parms->interleave > 0xff) 1419 return EINVAL; 1420 fd->sc_type->sectrac = form_parms->nspt; 1421 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1422 return EINVAL; 1423 fd->sc_type->heads = form_parms->ntrk; 1424 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1425 fd->sc_type->secsize = ffs(scratch)-1; 1426 fd->sc_type->gap2 = form_parms->gaplen; 1427 fd->sc_type->cyls = form_parms->ncyl; 1428 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1429 form_parms->nbps / DEV_BSIZE; 1430 fd->sc_type->step = form_parms->stepspercyl; 1431 fd->sc_type->fillbyte = form_parms->fillbyte; 1432 fd->sc_type->interleave = form_parms->interleave; 1433 return 0; 1434 1435 case FDIOCFORMAT_TRACK: 1436 if((flag & FWRITE) == 0) 1437 return EBADF; /* must be opened for writing */ 1438 form_cmd = (struct fdformat_cmd *)addr; 1439 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1440 return EINVAL; /* wrong version of formatting prog */ 1441 1442 if (form_cmd->head >= fd->sc_type->heads || 1443 form_cmd->cylinder >= fd->sc_type->cyls) { 1444 return EINVAL; 1445 } 1446 1447 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1448 M_TEMP, M_NOWAIT); 1449 if (fd_formb == 0) 1450 return ENOMEM; 1451 1452 fd_formb->head = form_cmd->head; 1453 fd_formb->cyl = form_cmd->cylinder; 1454 fd_formb->transfer_rate = fd->sc_type->rate; 1455 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1456 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1457 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1458 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1459 1460 memset(il, 0, sizeof il); 1461 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1462 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1463 j++; 1464 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1465 j += fd->sc_type->interleave; 1466 } 1467 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1468 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1469 fd_formb->fd_formb_headno(i) = form_cmd->head; 1470 fd_formb->fd_formb_secno(i) = il[i+1]; 1471 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1472 } 1473 1474 error = fdformat(dev, fd_formb, p); 1475 free(fd_formb, M_TEMP); 1476 return error; 1477 1478 case FDIOCGETOPTS: /* get drive options */ 1479 *(int *)addr = fd->sc_opts; 1480 return 0; 1481 1482 case FDIOCSETOPTS: /* set drive options */ 1483 fd->sc_opts = *(int *)addr; 1484 return 0; 1485 1486 default: 1487 return ENOTTY; 1488 } 1489 1490 #ifdef DIAGNOSTIC 1491 panic("fdioctl: impossible"); 1492 #endif 1493 } 1494 1495 int 1496 fdformat(dev, finfo, p) 1497 dev_t dev; 1498 struct ne7_fd_formb *finfo; 1499 struct proc *p; 1500 { 1501 int rv = 0, s; 1502 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1503 struct fd_type *type = fd->sc_type; 1504 struct buf *bp; 1505 1506 /* set up a buffer header for fdstrategy() */ 1507 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1508 if(bp == 0) 1509 return ENOBUFS; 1510 memset((void *)bp, 0, sizeof(struct buf)); 1511 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1512 bp->b_proc = p; 1513 bp->b_dev = dev; 1514 1515 /* 1516 * calculate a fake blkno, so fdstrategy() would initiate a 1517 * seek to the requested cylinder 1518 */ 1519 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1520 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1521 1522 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1523 bp->b_data = (caddr_t)finfo; 1524 1525 #ifdef DEBUG 1526 printf("fdformat: blkno %x count %lx\n", bp->b_blkno, bp->b_bcount); 1527 #endif 1528 1529 /* now do the format */ 1530 fdstrategy(bp); 1531 1532 /* ...and wait for it to complete */ 1533 s = splbio(); 1534 while(!(bp->b_flags & B_DONE)) { 1535 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1536 if (rv == EWOULDBLOCK) 1537 break; 1538 } 1539 splx(s); 1540 1541 if (rv == EWOULDBLOCK) { 1542 /* timed out */ 1543 rv = EIO; 1544 biodone(bp); 1545 } 1546 if(bp->b_flags & B_ERROR) { 1547 rv = bp->b_error; 1548 } 1549 free(bp, M_TEMP); 1550 return rv; 1551 } 1552 1553 /* 1554 * Mountroot hook: prompt the user to enter the root file system 1555 * floppy. 1556 */ 1557 void 1558 fd_mountroot_hook(dev) 1559 struct device *dev; 1560 { 1561 int c; 1562 1563 printf("Insert filesystem floppy and press return."); 1564 cnpollc(1); 1565 for (;;) { 1566 c = cngetc(); 1567 if ((c == '\r') || (c == '\n')) { 1568 printf("\n"); 1569 break; 1570 } 1571 } 1572 cnpollc(0); 1573 } 1574