1 /* $NetBSD: fd.c,v 1.26 2002/09/11 07:22:19 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 <sys/cdefs.h> 95 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.26 2002/09/11 07:22:19 thorpej Exp $"); 96 97 #include "rnd.h" 98 #include "opt_ddb.h" 99 100 /* 101 * XXX This driver should be properly MI'd some day, but this allows us 102 * XXX to eliminate a lot of code duplication for now. 103 */ 104 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 105 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 106 !defined(prep) && !defined(sandpoint) && !defined(x86_64) 107 #error platform not supported by this driver, yet 108 #endif 109 110 #include <sys/param.h> 111 #include <sys/systm.h> 112 #include <sys/callout.h> 113 #include <sys/kernel.h> 114 #include <sys/file.h> 115 #include <sys/ioctl.h> 116 #include <sys/device.h> 117 #include <sys/disklabel.h> 118 #include <sys/dkstat.h> 119 #include <sys/disk.h> 120 #include <sys/buf.h> 121 #include <sys/malloc.h> 122 #include <sys/uio.h> 123 #include <sys/syslog.h> 124 #include <sys/queue.h> 125 #include <sys/proc.h> 126 #include <sys/fdio.h> 127 #include <sys/conf.h> 128 #if NRND > 0 129 #include <sys/rnd.h> 130 #endif 131 132 #include <uvm/uvm_extern.h> 133 134 #include <dev/cons.h> 135 136 #include <machine/cpu.h> 137 #include <machine/bus.h> 138 139 #if defined(atari) 140 /* 141 * On the atari, it is configured as fdcisa 142 */ 143 #define FDCCF_DRIVE FDCISACF_DRIVE 144 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 145 146 #define fd_cd fdisa_cd 147 #define fd_ca fdisa_ca 148 #endif /* atari */ 149 150 #include <machine/intr.h> 151 152 #include <dev/isa/isavar.h> 153 #include <dev/isa/isadmavar.h> 154 155 #include <dev/isa/fdreg.h> 156 #include <dev/isa/fdcvar.h> 157 158 #if defined(i386) 159 160 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 161 #include <i386/isa/nvram.h> 162 163 #include "mca.h" 164 #if NMCA > 0 165 #include <machine/mca_machdep.h> /* for MCA_system */ 166 #endif 167 168 #endif /* i386 */ 169 170 #define FDUNIT(dev) (minor(dev) / 8) 171 #define FDTYPE(dev) (minor(dev) % 8) 172 173 /* XXX misuse a flag to identify format operation */ 174 #define B_FORMAT B_XXX 175 176 /* controller driver configuration */ 177 int fdprint __P((void *, const char *)); 178 179 /* 180 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 181 * we tell them apart. 182 */ 183 struct fd_type { 184 int sectrac; /* sectors per track */ 185 int heads; /* number of heads */ 186 int seccyl; /* sectors per cylinder */ 187 int secsize; /* size code for sectors */ 188 int datalen; /* data len when secsize = 0 */ 189 int steprate; /* step rate and head unload time */ 190 int gap1; /* gap len between sectors */ 191 int gap2; /* formatting gap */ 192 int cyls; /* total num of cylinders */ 193 int size; /* size of disk in sectors */ 194 int step; /* steps per cylinder */ 195 int rate; /* transfer speed code */ 196 u_char fillbyte; /* format fill byte */ 197 u_char interleave; /* interleave factor (formatting) */ 198 const char *name; 199 }; 200 201 #if NMCA > 0 202 /* MCA - specific entries */ 203 const struct fd_type mca_fd_types[] = { 204 { 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 */ 205 { 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 */ 206 }; 207 #endif /* NMCA > 0 */ 208 209 /* The order of entries in the following table is important -- BEWARE! */ 210 211 #if defined(atari) 212 const struct fd_type fd_types[] = { 213 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 214 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 215 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 216 }; 217 #else 218 const struct fd_type fd_types[] = { 219 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 220 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 221 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 222 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 223 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 224 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 226 }; 227 #endif /* defined(atari) */ 228 229 /* software state, per disk (with up to 4 disks per ctlr) */ 230 struct fd_softc { 231 struct device sc_dev; 232 struct disk sc_dk; 233 234 const struct fd_type *sc_deftype; /* default type descriptor */ 235 struct fd_type *sc_type; /* current type descriptor */ 236 struct fd_type sc_type_copy; /* copy for fiddling when formatting */ 237 238 struct callout sc_motoron_ch; 239 struct callout sc_motoroff_ch; 240 241 daddr_t sc_blkno; /* starting block number */ 242 int sc_bcount; /* byte count left */ 243 int sc_opts; /* user-set options */ 244 int sc_skip; /* bytes already transferred */ 245 int sc_nblks; /* number of blocks currently transferring */ 246 int sc_nbytes; /* number of bytes currently transferring */ 247 248 int sc_drive; /* physical unit number */ 249 int sc_flags; 250 #define FD_OPEN 0x01 /* it's open */ 251 #define FD_MOTOR 0x02 /* motor should be on */ 252 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 253 int sc_cylin; /* where we think the head is */ 254 255 void *sc_sdhook; /* saved shutdown hook for drive. */ 256 257 TAILQ_ENTRY(fd_softc) sc_drivechain; 258 int sc_ops; /* I/O ops since last switch */ 259 struct bufq_state sc_q; /* pending I/O requests */ 260 int sc_active; /* number of active I/O operations */ 261 262 #if NRND > 0 263 rndsource_element_t rnd_source; 264 #endif 265 }; 266 267 int fdprobe __P((struct device *, struct cfdata *, void *)); 268 void fdattach __P((struct device *, struct device *, void *)); 269 270 extern struct cfdriver fd_cd; 271 272 struct cfattach fd_ca = { 273 sizeof(struct fd_softc), fdprobe, fdattach, 274 }; 275 276 dev_type_open(fdopen); 277 dev_type_close(fdclose); 278 dev_type_read(fdread); 279 dev_type_write(fdwrite); 280 dev_type_ioctl(fdioctl); 281 dev_type_strategy(fdstrategy); 282 283 const struct bdevsw fd_bdevsw = { 284 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 285 }; 286 287 const struct cdevsw fd_cdevsw = { 288 fdopen, fdclose, fdread, fdwrite, fdioctl, 289 nostop, notty, nopoll, nommap, D_DISK 290 }; 291 292 void fdgetdisklabel __P((struct fd_softc *)); 293 int fd_get_parms __P((struct fd_softc *)); 294 void fdstart __P((struct fd_softc *)); 295 296 struct dkdriver fddkdriver = { fdstrategy }; 297 298 #if defined(i386) 299 const struct fd_type *fd_nvtotype __P((char *, int, int)); 300 #endif /* i386 */ 301 void fd_set_motor __P((struct fdc_softc *fdc, int reset)); 302 void fd_motor_off __P((void *arg)); 303 void fd_motor_on __P((void *arg)); 304 int fdcresult __P((struct fdc_softc *fdc)); 305 void fdcstart __P((struct fdc_softc *fdc)); 306 void fdcstatus __P((struct device *dv, int n, char *s)); 307 void fdctimeout __P((void *arg)); 308 void fdcpseudointr __P((void *arg)); 309 void fdcretry __P((struct fdc_softc *fdc)); 310 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 311 __inline const struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 312 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 313 314 void fd_mountroot_hook __P((struct device *)); 315 316 /* 317 * Arguments passed between fdcattach and fdprobe. 318 */ 319 struct fdc_attach_args { 320 int fa_drive; 321 const struct fd_type *fa_deftype; 322 }; 323 324 /* 325 * Print the location of a disk drive (called just before attaching the 326 * the drive). If `fdc' is not NULL, the drive was found but was not 327 * in the system config file; print the drive name as well. 328 * Return QUIET (config_find ignores this if the device was configured) to 329 * avoid printing `fdN not configured' messages. 330 */ 331 int 332 fdprint(aux, fdc) 333 void *aux; 334 const char *fdc; 335 { 336 register struct fdc_attach_args *fa = aux; 337 338 if (!fdc) 339 printf(" drive %d", fa->fa_drive); 340 return QUIET; 341 } 342 343 void 344 fdcattach(fdc) 345 struct fdc_softc *fdc; 346 { 347 struct fdc_attach_args fa; 348 bus_space_tag_t iot; 349 bus_space_handle_t ioh; 350 #if defined(i386) 351 int type; 352 #endif 353 354 iot = fdc->sc_iot; 355 ioh = fdc->sc_ioh; 356 callout_init(&fdc->sc_timo_ch); 357 callout_init(&fdc->sc_intr_ch); 358 359 fdc->sc_state = DEVIDLE; 360 TAILQ_INIT(&fdc->sc_drives); 361 362 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 363 364 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 365 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 366 printf("%s: can't set up ISA DMA map\n", 367 fdc->sc_dev.dv_xname); 368 return; 369 } 370 371 /* 372 * Reset the controller to get it into a known state. Not all 373 * probes necessarily need do this to discover the controller up 374 * front, so don't assume anything. 375 */ 376 377 bus_space_write_1(iot, ioh, fdout, 0); 378 delay(100); 379 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 380 381 /* see if it can handle a command */ 382 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 383 printf ("%s: can't reset controller\n", fdc->sc_dev.dv_xname); 384 return; 385 } 386 out_fdc(iot, ioh, 0xdf); 387 out_fdc(iot, ioh, 2); 388 389 #if defined(i386) 390 /* 391 * The NVRAM info only tells us about the first two disks on the 392 * `primary' floppy controller. 393 */ 394 if (fdc->sc_dev.dv_unit == 0) 395 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 396 else 397 type = -1; 398 #endif /* i386 */ 399 400 /* physical limit: four drives per controller. */ 401 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 402 #if defined(i386) 403 if (type >= 0 && fa.fa_drive < 2) 404 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 405 type, fa.fa_drive); 406 else 407 fa.fa_deftype = NULL; /* unknown */ 408 #elif defined(atari) 409 /* 410 * Atari has a different ordening, defaults to 1.44 411 */ 412 fa.fa_deftype = &fd_types[2]; 413 #else 414 /* 415 * Default to 1.44MB on Alpha and BeBox. How do we tell 416 * on these platforms? 417 */ 418 fa.fa_deftype = &fd_types[0]; 419 #endif /* i386 */ 420 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 421 } 422 } 423 424 int 425 fdprobe(parent, match, aux) 426 struct device *parent; 427 struct cfdata *match; 428 void *aux; 429 { 430 struct fdc_softc *fdc = (void *)parent; 431 struct cfdata *cf = match; 432 struct fdc_attach_args *fa = aux; 433 int drive = fa->fa_drive; 434 bus_space_tag_t iot = fdc->sc_iot; 435 bus_space_handle_t ioh = fdc->sc_ioh; 436 int n; 437 438 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 439 cf->cf_loc[FDCCF_DRIVE] != drive) 440 return 0; 441 /* 442 * XXX 443 * This is to work around some odd interactions between this driver 444 * and SMC Ethernet cards. 445 */ 446 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 447 return 0; 448 449 /* select drive and turn on motor */ 450 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 451 /* wait for motor to spin up */ 452 delay(250000); 453 out_fdc(iot, ioh, NE7CMD_RECAL); 454 out_fdc(iot, ioh, drive); 455 /* wait for recalibrate */ 456 delay(2000000); 457 out_fdc(iot, ioh, NE7CMD_SENSEI); 458 n = fdcresult(fdc); 459 #ifdef FD_DEBUG 460 { 461 int i; 462 printf("fdprobe: status"); 463 for (i = 0; i < n; i++) 464 printf(" %x", fdc->sc_status[i]); 465 printf("\n"); 466 } 467 #endif 468 /* turn off motor */ 469 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 470 471 #if defined(bebox) /* XXX What is this about? --thorpej@netbsd.org */ 472 if (n != 2 || (fdc->sc_status[1] != 0)) 473 return 0; 474 #else 475 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 476 return 0; 477 #endif /* bebox */ 478 479 return 1; 480 } 481 482 /* 483 * Controller is working, and drive responded. Attach it. 484 */ 485 void 486 fdattach(parent, self, aux) 487 struct device *parent, *self; 488 void *aux; 489 { 490 struct fdc_softc *fdc = (void *)parent; 491 struct fd_softc *fd = (void *)self; 492 struct fdc_attach_args *fa = aux; 493 const struct fd_type *type = fa->fa_deftype; 494 int drive = fa->fa_drive; 495 496 callout_init(&fd->sc_motoron_ch); 497 callout_init(&fd->sc_motoroff_ch); 498 499 /* XXX Allow `flags' to override device type? */ 500 501 if (type) 502 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 503 type->cyls, type->heads, type->sectrac); 504 else 505 printf(": density unknown\n"); 506 507 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 508 fd->sc_cylin = -1; 509 fd->sc_drive = drive; 510 fd->sc_deftype = type; 511 fdc->sc_fd[drive] = fd; 512 513 /* 514 * Initialize and attach the disk structure. 515 */ 516 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 517 fd->sc_dk.dk_driver = &fddkdriver; 518 disk_attach(&fd->sc_dk); 519 520 /* 521 * Establish a mountroot hook. 522 */ 523 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 524 525 /* Needed to power off if the motor is on when we halt. */ 526 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 527 528 #if NRND > 0 529 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 530 RND_TYPE_DISK, 0); 531 #endif 532 } 533 534 #if defined(i386) 535 /* 536 * Translate nvram type into internal data structure. Return NULL for 537 * none/unknown/unusable. 538 */ 539 const struct fd_type * 540 fd_nvtotype(fdc, nvraminfo, drive) 541 char *fdc; 542 int nvraminfo, drive; 543 { 544 int type; 545 546 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 547 switch (type) { 548 case NVRAM_DISKETTE_NONE: 549 return NULL; 550 case NVRAM_DISKETTE_12M: 551 return &fd_types[1]; 552 case NVRAM_DISKETTE_TYPE5: 553 case NVRAM_DISKETTE_TYPE6: 554 /* XXX We really ought to handle 2.88MB format. */ 555 case NVRAM_DISKETTE_144M: 556 #if NMCA > 0 557 if (MCA_system) 558 return &mca_fd_types[0]; 559 else 560 #endif /* NMCA > 0 */ 561 return &fd_types[0]; 562 case NVRAM_DISKETTE_360K: 563 return &fd_types[3]; 564 case NVRAM_DISKETTE_720K: 565 #if NMCA > 0 566 if (MCA_system) 567 return &mca_fd_types[1]; 568 else 569 #endif /* NMCA > 0 */ 570 return &fd_types[4]; 571 default: 572 printf("%s: drive %d: unknown device type 0x%x\n", 573 fdc, drive, type); 574 return NULL; 575 } 576 } 577 #endif /* i386 */ 578 579 __inline const struct fd_type * 580 fd_dev_to_type(fd, dev) 581 struct fd_softc *fd; 582 dev_t dev; 583 { 584 u_int type = FDTYPE(dev); 585 586 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 587 return NULL; 588 return type ? &fd_types[type - 1] : fd->sc_deftype; 589 } 590 591 void 592 fdstrategy(bp) 593 register struct buf *bp; /* IO operation to perform */ 594 { 595 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 596 int sz; 597 int s; 598 599 /* Valid unit, controller, and request? */ 600 if (bp->b_blkno < 0 || 601 ((bp->b_bcount % FDC_BSIZE) != 0 && 602 (bp->b_flags & B_FORMAT) == 0)) { 603 bp->b_error = EINVAL; 604 goto bad; 605 } 606 607 /* If it's a null transfer, return immediately. */ 608 if (bp->b_bcount == 0) 609 goto done; 610 611 sz = howmany(bp->b_bcount, FDC_BSIZE); 612 613 if (bp->b_blkno + sz > fd->sc_type->size) { 614 sz = fd->sc_type->size - bp->b_blkno; 615 if (sz == 0) { 616 /* If exactly at end of disk, return EOF. */ 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 = 630 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 631 632 #ifdef FD_DEBUG 633 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld sz %d\n", 634 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 635 #endif 636 637 /* Queue transfer on drive, activate drive and controller if idle. */ 638 s = splbio(); 639 BUFQ_PUT(&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_dev.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 bp->b_resid = bp->b_bcount; 660 biodone(bp); 661 } 662 663 void 664 fdstart(fd) 665 struct fd_softc *fd; 666 { 667 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 668 int active = !TAILQ_EMPTY(&fdc->sc_drives); 669 670 /* Link into controller queue. */ 671 fd->sc_active = 1; 672 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 673 674 /* If controller not already active, start it. */ 675 if (!active) 676 fdcstart(fdc); 677 } 678 679 void 680 fdfinish(fd, bp) 681 struct fd_softc *fd; 682 struct buf *bp; 683 { 684 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 685 686 /* 687 * Move this drive to the end of the queue to give others a `fair' 688 * chance. We only force a switch if N operations are completed while 689 * another drive is waiting to be serviced, since there is a long motor 690 * startup delay whenever we switch. 691 */ 692 (void)BUFQ_GET(&fd->sc_q); 693 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 694 fd->sc_ops = 0; 695 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 696 if (BUFQ_PEEK(&fd->sc_q) != NULL) 697 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 698 else 699 fd->sc_active = 0; 700 } 701 bp->b_resid = fd->sc_bcount; 702 fd->sc_skip = 0; 703 704 #if NRND > 0 705 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 706 #endif 707 708 biodone(bp); 709 /* turn off motor 5s from now */ 710 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 711 fdc->sc_state = DEVIDLE; 712 } 713 714 int 715 fdread(dev, uio, flags) 716 dev_t dev; 717 struct uio *uio; 718 int flags; 719 { 720 721 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 722 } 723 724 int 725 fdwrite(dev, uio, flags) 726 dev_t dev; 727 struct uio *uio; 728 int flags; 729 { 730 731 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 732 } 733 734 void 735 fd_set_motor(fdc, reset) 736 struct fdc_softc *fdc; 737 int reset; 738 { 739 struct fd_softc *fd; 740 u_char status; 741 int n; 742 743 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 744 status = fd->sc_drive; 745 else 746 status = 0; 747 if (!reset) 748 status |= FDO_FRST | FDO_FDMAEN; 749 for (n = 0; n < 4; n++) 750 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 751 status |= FDO_MOEN(n); 752 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 753 } 754 755 void 756 fd_motor_off(arg) 757 void *arg; 758 { 759 struct fd_softc *fd = arg; 760 int s; 761 762 s = splbio(); 763 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 764 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 765 splx(s); 766 } 767 768 void 769 fd_motor_on(arg) 770 void *arg; 771 { 772 struct fd_softc *fd = arg; 773 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 774 int s; 775 776 s = splbio(); 777 fd->sc_flags &= ~FD_MOTOR_WAIT; 778 if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT)) 779 (void) fdcintr(fdc); 780 splx(s); 781 } 782 783 int 784 fdcresult(fdc) 785 struct fdc_softc *fdc; 786 { 787 bus_space_tag_t iot = fdc->sc_iot; 788 bus_space_handle_t ioh = fdc->sc_ioh; 789 u_char i; 790 u_int j = 100000, 791 n = 0; 792 793 for (; j; j--) { 794 i = bus_space_read_1(iot, ioh, fdsts) & 795 (NE7_DIO | NE7_RQM | NE7_CB); 796 if (i == NE7_RQM) 797 return n; 798 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 799 if (n >= sizeof(fdc->sc_status)) { 800 log(LOG_ERR, "fdcresult: overrun\n"); 801 return -1; 802 } 803 fdc->sc_status[n++] = 804 bus_space_read_1(iot, ioh, fddata); 805 } 806 delay(10); 807 } 808 log(LOG_ERR, "fdcresult: timeout\n"); 809 return -1; 810 } 811 812 int 813 out_fdc(iot, ioh, x) 814 bus_space_tag_t iot; 815 bus_space_handle_t ioh; 816 u_char x; 817 { 818 int i = 100000; 819 820 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_DIO) && i-- > 0); 821 if (i <= 0) 822 return -1; 823 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0); 824 if (i <= 0) 825 return -1; 826 bus_space_write_1(iot, ioh, fddata, x); 827 return 0; 828 } 829 830 int 831 fdopen(dev, flags, mode, p) 832 dev_t dev; 833 int flags; 834 int mode; 835 struct proc *p; 836 { 837 struct fd_softc *fd; 838 const struct fd_type *type; 839 840 fd = device_lookup(&fd_cd, FDUNIT(dev)); 841 if (fd == NULL) 842 return (ENXIO); 843 844 type = fd_dev_to_type(fd, dev); 845 if (type == NULL) 846 return ENXIO; 847 848 if ((fd->sc_flags & FD_OPEN) != 0 && 849 memcmp(fd->sc_type, type, sizeof(*type))) 850 return EBUSY; 851 852 fd->sc_type_copy = *type; 853 fd->sc_type = &fd->sc_type_copy; 854 fd->sc_cylin = -1; 855 fd->sc_flags |= FD_OPEN; 856 857 return 0; 858 } 859 860 int 861 fdclose(dev, flags, mode, p) 862 dev_t dev; 863 int flags; 864 int mode; 865 struct proc *p; 866 { 867 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 868 869 fd->sc_flags &= ~FD_OPEN; 870 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 871 return 0; 872 } 873 874 void 875 fdcstart(fdc) 876 struct fdc_softc *fdc; 877 { 878 879 #ifdef DIAGNOSTIC 880 /* only got here if controller's drive queue was inactive; should 881 be in idle state */ 882 if (fdc->sc_state != DEVIDLE) { 883 printf("fdcstart: not idle\n"); 884 return; 885 } 886 #endif 887 (void) fdcintr(fdc); 888 } 889 890 void 891 fdcstatus(dv, n, s) 892 struct device *dv; 893 int n; 894 char *s; 895 { 896 struct fdc_softc *fdc = (void *)dv->dv_parent; 897 char bits[64]; 898 899 if (n == 0) { 900 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 901 (void) fdcresult(fdc); 902 n = 2; 903 } 904 905 printf("%s: %s", dv->dv_xname, s); 906 907 switch (n) { 908 case 0: 909 printf("\n"); 910 break; 911 case 2: 912 printf(" (st0 %s cyl %d)\n", 913 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 914 bits, sizeof(bits)), fdc->sc_status[1]); 915 break; 916 case 7: 917 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 918 NE7_ST0BITS, bits, sizeof(bits))); 919 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 920 NE7_ST1BITS, bits, sizeof(bits))); 921 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 922 NE7_ST2BITS, bits, sizeof(bits))); 923 printf(" cyl %d head %d sec %d)\n", 924 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 925 break; 926 #ifdef DIAGNOSTIC 927 default: 928 printf("\nfdcstatus: weird size"); 929 break; 930 #endif 931 } 932 } 933 934 void 935 fdctimeout(arg) 936 void *arg; 937 { 938 struct fdc_softc *fdc = arg; 939 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 940 int s; 941 942 s = splbio(); 943 #ifdef DEBUG 944 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 945 #endif 946 fdcstatus(&fd->sc_dev, 0, "timeout"); 947 948 if (BUFQ_PEEK(&fd->sc_q) != NULL) 949 fdc->sc_state++; 950 else 951 fdc->sc_state = DEVIDLE; 952 953 (void) fdcintr(fdc); 954 splx(s); 955 } 956 957 void 958 fdcpseudointr(arg) 959 void *arg; 960 { 961 int s; 962 963 /* Just ensure it has the right spl. */ 964 s = splbio(); 965 (void) fdcintr(arg); 966 splx(s); 967 } 968 969 int 970 fdcintr(arg) 971 void *arg; 972 { 973 struct fdc_softc *fdc = arg; 974 #define st0 fdc->sc_status[0] 975 #define cyl fdc->sc_status[1] 976 struct fd_softc *fd; 977 struct buf *bp; 978 bus_space_tag_t iot = fdc->sc_iot; 979 bus_space_handle_t ioh = fdc->sc_ioh; 980 int read, head, sec, i, nblks; 981 struct fd_type *type; 982 struct ne7_fd_formb *finfo = NULL; 983 984 loop: 985 /* Is there a drive for the controller to do a transfer with? */ 986 fd = TAILQ_FIRST(&fdc->sc_drives); 987 if (fd == NULL) { 988 fdc->sc_state = DEVIDLE; 989 return 1; 990 } 991 992 /* Is there a transfer to this drive? If not, deactivate drive. */ 993 bp = BUFQ_PEEK(&fd->sc_q); 994 if (bp == NULL) { 995 fd->sc_ops = 0; 996 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 997 fd->sc_active = 0; 998 goto loop; 999 } 1000 1001 if (bp->b_flags & B_FORMAT) 1002 finfo = (struct ne7_fd_formb *)bp->b_data; 1003 1004 switch (fdc->sc_state) { 1005 case DEVIDLE: 1006 fdc->sc_errors = 0; 1007 fd->sc_skip = 0; 1008 fd->sc_bcount = bp->b_bcount; 1009 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1010 callout_stop(&fd->sc_motoroff_ch); 1011 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1012 fdc->sc_state = MOTORWAIT; 1013 return 1; 1014 } 1015 if ((fd->sc_flags & FD_MOTOR) == 0) { 1016 /* Turn on the motor, being careful about pairing. */ 1017 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1018 if (ofd && ofd->sc_flags & FD_MOTOR) { 1019 callout_stop(&ofd->sc_motoroff_ch); 1020 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1021 } 1022 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1023 fd_set_motor(fdc, 0); 1024 fdc->sc_state = MOTORWAIT; 1025 /* Allow .25s for motor to stabilize. */ 1026 callout_reset(&fd->sc_motoron_ch, hz / 4, 1027 fd_motor_on, fd); 1028 return 1; 1029 } 1030 /* Make sure the right drive is selected. */ 1031 fd_set_motor(fdc, 0); 1032 1033 /* fall through */ 1034 case DOSEEK: 1035 doseek: 1036 if (fd->sc_cylin == bp->b_cylinder) 1037 goto doio; 1038 1039 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1040 out_fdc(iot, ioh, fd->sc_type->steprate); 1041 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1042 1043 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1044 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1045 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1046 1047 fd->sc_cylin = -1; 1048 fdc->sc_state = SEEKWAIT; 1049 1050 fd->sc_dk.dk_seek++; 1051 disk_busy(&fd->sc_dk); 1052 1053 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1054 return 1; 1055 1056 case DOIO: 1057 doio: 1058 type = fd->sc_type; 1059 if (finfo) 1060 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1061 (char *)finfo; 1062 sec = fd->sc_blkno % type->seccyl; 1063 nblks = type->seccyl - sec; 1064 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1065 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1066 fd->sc_nblks = nblks; 1067 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1068 head = sec / type->sectrac; 1069 sec -= head * type->sectrac; 1070 #ifdef DIAGNOSTIC 1071 { 1072 int block; 1073 block = (fd->sc_cylin * type->heads + head) 1074 * type->sectrac + sec; 1075 if (block != fd->sc_blkno) { 1076 printf("fdcintr: block %d != blkno %d\n", 1077 block, fd->sc_blkno); 1078 #ifdef DDB 1079 Debugger(); 1080 #endif 1081 } 1082 } 1083 #endif 1084 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1085 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1086 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1087 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1088 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1089 #ifdef FD_DEBUG 1090 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1091 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1092 head, sec, nblks); 1093 #endif 1094 if (finfo) { 1095 /* formatting */ 1096 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1097 fdc->sc_errors = 4; 1098 fdcretry(fdc); 1099 goto loop; 1100 } 1101 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1102 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1103 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1104 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1105 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1106 } else { 1107 if (read) 1108 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1109 else 1110 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1111 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1112 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1113 out_fdc(iot, ioh, head); 1114 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1115 out_fdc(iot, ioh, type->secsize);/* sector size */ 1116 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1117 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1118 out_fdc(iot, ioh, type->datalen);/* data length */ 1119 } 1120 fdc->sc_state = IOCOMPLETE; 1121 1122 disk_busy(&fd->sc_dk); 1123 1124 /* allow 2 seconds for operation */ 1125 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1126 return 1; /* will return later */ 1127 1128 case SEEKWAIT: 1129 callout_stop(&fdc->sc_timo_ch); 1130 fdc->sc_state = SEEKCOMPLETE; 1131 /* allow 1/50 second for heads to settle */ 1132 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1133 return 1; 1134 1135 case SEEKCOMPLETE: 1136 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1137 1138 /* Make sure seek really happened. */ 1139 out_fdc(iot, ioh, NE7CMD_SENSEI); 1140 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1141 cyl != bp->b_cylinder * fd->sc_type->step) { 1142 #ifdef FD_DEBUG 1143 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1144 #endif 1145 fdcretry(fdc); 1146 goto loop; 1147 } 1148 fd->sc_cylin = bp->b_cylinder; 1149 goto doio; 1150 1151 case IOTIMEDOUT: 1152 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1153 case SEEKTIMEDOUT: 1154 case RECALTIMEDOUT: 1155 case RESETTIMEDOUT: 1156 fdcretry(fdc); 1157 goto loop; 1158 1159 case IOCOMPLETE: /* IO DONE, post-analyze */ 1160 callout_stop(&fdc->sc_timo_ch); 1161 1162 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1163 1164 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1165 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1166 #ifdef FD_DEBUG 1167 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1168 "read failed" : "write failed"); 1169 printf("blkno %d nblks %d\n", 1170 fd->sc_blkno, fd->sc_nblks); 1171 #endif 1172 fdcretry(fdc); 1173 goto loop; 1174 } 1175 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1176 if (fdc->sc_errors) { 1177 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1178 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1179 printf("\n"); 1180 fdc->sc_errors = 0; 1181 } 1182 fd->sc_blkno += fd->sc_nblks; 1183 fd->sc_skip += fd->sc_nbytes; 1184 fd->sc_bcount -= fd->sc_nbytes; 1185 if (!finfo && fd->sc_bcount > 0) { 1186 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1187 goto doseek; 1188 } 1189 fdfinish(fd, bp); 1190 goto loop; 1191 1192 case DORESET: 1193 /* try a reset, keep motor on */ 1194 fd_set_motor(fdc, 1); 1195 delay(100); 1196 fd_set_motor(fdc, 0); 1197 fdc->sc_state = RESETCOMPLETE; 1198 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1199 return 1; /* will return later */ 1200 1201 case RESETCOMPLETE: 1202 callout_stop(&fdc->sc_timo_ch); 1203 /* clear the controller output buffer */ 1204 for (i = 0; i < 4; i++) { 1205 out_fdc(iot, ioh, NE7CMD_SENSEI); 1206 (void) fdcresult(fdc); 1207 } 1208 1209 /* fall through */ 1210 case DORECAL: 1211 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1212 out_fdc(iot, ioh, fd->sc_drive); 1213 fdc->sc_state = RECALWAIT; 1214 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1215 return 1; /* will return later */ 1216 1217 case RECALWAIT: 1218 callout_stop(&fdc->sc_timo_ch); 1219 fdc->sc_state = RECALCOMPLETE; 1220 /* allow 1/30 second for heads to settle */ 1221 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1222 return 1; /* will return later */ 1223 1224 case RECALCOMPLETE: 1225 out_fdc(iot, ioh, NE7CMD_SENSEI); 1226 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1227 #ifdef FD_DEBUG 1228 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1229 #endif 1230 fdcretry(fdc); 1231 goto loop; 1232 } 1233 fd->sc_cylin = 0; 1234 goto doseek; 1235 1236 case MOTORWAIT: 1237 if (fd->sc_flags & FD_MOTOR_WAIT) 1238 return 1; /* time's not up yet */ 1239 goto doseek; 1240 1241 default: 1242 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1243 return 1; 1244 } 1245 #ifdef DIAGNOSTIC 1246 panic("fdcintr: impossible"); 1247 #endif 1248 #undef st0 1249 #undef cyl 1250 } 1251 1252 void 1253 fdcretry(fdc) 1254 struct fdc_softc *fdc; 1255 { 1256 char bits[64]; 1257 struct fd_softc *fd; 1258 struct buf *bp; 1259 1260 fd = TAILQ_FIRST(&fdc->sc_drives); 1261 bp = BUFQ_PEEK(&fd->sc_q); 1262 1263 if (fd->sc_opts & FDOPT_NORETRY) 1264 goto fail; 1265 switch (fdc->sc_errors) { 1266 case 0: 1267 /* try again */ 1268 fdc->sc_state = DOSEEK; 1269 break; 1270 1271 case 1: case 2: case 3: 1272 /* didn't work; try recalibrating */ 1273 fdc->sc_state = DORECAL; 1274 break; 1275 1276 case 4: 1277 /* still no go; reset the bastard */ 1278 fdc->sc_state = DORESET; 1279 break; 1280 1281 default: 1282 fail: 1283 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1284 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1285 fd->sc_skip / FDC_BSIZE, 1286 (struct disklabel *)NULL); 1287 1288 printf(" (st0 %s", 1289 bitmask_snprintf(fdc->sc_status[0], 1290 NE7_ST0BITS, bits, 1291 sizeof(bits))); 1292 printf(" st1 %s", 1293 bitmask_snprintf(fdc->sc_status[1], 1294 NE7_ST1BITS, bits, 1295 sizeof(bits))); 1296 printf(" st2 %s", 1297 bitmask_snprintf(fdc->sc_status[2], 1298 NE7_ST2BITS, bits, 1299 sizeof(bits))); 1300 printf(" cyl %d head %d sec %d)\n", 1301 fdc->sc_status[3], 1302 fdc->sc_status[4], 1303 fdc->sc_status[5]); 1304 } 1305 1306 bp->b_flags |= B_ERROR; 1307 bp->b_error = EIO; 1308 fdfinish(fd, bp); 1309 } 1310 fdc->sc_errors++; 1311 } 1312 1313 int 1314 fdioctl(dev, cmd, addr, flag, p) 1315 dev_t dev; 1316 u_long cmd; 1317 caddr_t addr; 1318 int flag; 1319 struct proc *p; 1320 { 1321 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1322 struct fdformat_parms *form_parms; 1323 struct fdformat_cmd *form_cmd; 1324 struct ne7_fd_formb *fd_formb; 1325 struct disklabel buffer; 1326 int error; 1327 unsigned int scratch; 1328 int il[FD_MAX_NSEC + 1]; 1329 register int i, j; 1330 #ifdef __HAVE_OLD_DISKLABEL 1331 struct disklabel newlabel; 1332 #endif 1333 1334 switch (cmd) { 1335 case DIOCGDINFO: 1336 #ifdef __HAVE_OLD_DISKLABEL 1337 case ODIOCGDINFO: 1338 #endif 1339 memset(&buffer, 0, sizeof(buffer)); 1340 1341 buffer.d_secpercyl = fd->sc_type->seccyl; 1342 buffer.d_type = DTYPE_FLOPPY; 1343 buffer.d_secsize = FDC_BSIZE; 1344 1345 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1346 return EINVAL; 1347 1348 #ifdef __HAVE_OLD_DISKLABEL 1349 if (cmd == ODIOCGDINFO) { 1350 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1351 return ENOTTY; 1352 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1353 } else 1354 #endif 1355 *(struct disklabel *)addr = buffer; 1356 return 0; 1357 1358 case DIOCWLABEL: 1359 if ((flag & FWRITE) == 0) 1360 return EBADF; 1361 /* XXX do something */ 1362 return 0; 1363 1364 case DIOCWDINFO: 1365 #ifdef __HAVE_OLD_DISKLABEL 1366 case ODIOCWDINFO: 1367 #endif 1368 { 1369 struct disklabel *lp; 1370 1371 if ((flag & FWRITE) == 0) 1372 return EBADF; 1373 #ifdef __HAVE_OLD_DISKLABEL 1374 if (cmd == ODIOCWDINFO) { 1375 memset(&newlabel, 0, sizeof newlabel); 1376 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1377 lp = &newlabel; 1378 } else 1379 #endif 1380 lp = (struct disklabel *)addr; 1381 1382 error = setdisklabel(&buffer, lp, 0, NULL); 1383 if (error) 1384 return error; 1385 1386 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1387 return error; 1388 } 1389 1390 case FDIOCGETFORMAT: 1391 form_parms = (struct fdformat_parms *)addr; 1392 form_parms->fdformat_version = FDFORMAT_VERSION; 1393 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1394 form_parms->ncyl = fd->sc_type->cyls; 1395 form_parms->nspt = fd->sc_type->sectrac; 1396 form_parms->ntrk = fd->sc_type->heads; 1397 form_parms->stepspercyl = fd->sc_type->step; 1398 form_parms->gaplen = fd->sc_type->gap2; 1399 form_parms->fillbyte = fd->sc_type->fillbyte; 1400 form_parms->interleave = fd->sc_type->interleave; 1401 switch (fd->sc_type->rate) { 1402 case FDC_500KBPS: 1403 form_parms->xfer_rate = 500 * 1024; 1404 break; 1405 case FDC_300KBPS: 1406 form_parms->xfer_rate = 300 * 1024; 1407 break; 1408 case FDC_250KBPS: 1409 form_parms->xfer_rate = 250 * 1024; 1410 break; 1411 default: 1412 return EINVAL; 1413 } 1414 return 0; 1415 1416 case FDIOCSETFORMAT: 1417 if((flag & FWRITE) == 0) 1418 return EBADF; /* must be opened for writing */ 1419 form_parms = (struct fdformat_parms *)addr; 1420 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1421 return EINVAL; /* wrong version of formatting prog */ 1422 1423 scratch = form_parms->nbps >> 7; 1424 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1425 scratch & ~(1 << (ffs(scratch)-1))) 1426 /* not a power-of-two multiple of 128 */ 1427 return EINVAL; 1428 1429 switch (form_parms->xfer_rate) { 1430 case 500 * 1024: 1431 fd->sc_type->rate = FDC_500KBPS; 1432 break; 1433 case 300 * 1024: 1434 fd->sc_type->rate = FDC_300KBPS; 1435 break; 1436 case 250 * 1024: 1437 fd->sc_type->rate = FDC_250KBPS; 1438 break; 1439 default: 1440 return EINVAL; 1441 } 1442 1443 if (form_parms->nspt > FD_MAX_NSEC || 1444 form_parms->fillbyte > 0xff || 1445 form_parms->interleave > 0xff) 1446 return EINVAL; 1447 fd->sc_type->sectrac = form_parms->nspt; 1448 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1449 return EINVAL; 1450 fd->sc_type->heads = form_parms->ntrk; 1451 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1452 fd->sc_type->secsize = ffs(scratch)-1; 1453 fd->sc_type->gap2 = form_parms->gaplen; 1454 fd->sc_type->cyls = form_parms->ncyl; 1455 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1456 form_parms->nbps / DEV_BSIZE; 1457 fd->sc_type->step = form_parms->stepspercyl; 1458 fd->sc_type->fillbyte = form_parms->fillbyte; 1459 fd->sc_type->interleave = form_parms->interleave; 1460 return 0; 1461 1462 case FDIOCFORMAT_TRACK: 1463 if((flag & FWRITE) == 0) 1464 return EBADF; /* must be opened for writing */ 1465 form_cmd = (struct fdformat_cmd *)addr; 1466 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1467 return EINVAL; /* wrong version of formatting prog */ 1468 1469 if (form_cmd->head >= fd->sc_type->heads || 1470 form_cmd->cylinder >= fd->sc_type->cyls) { 1471 return EINVAL; 1472 } 1473 1474 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1475 M_TEMP, M_NOWAIT); 1476 if (fd_formb == 0) 1477 return ENOMEM; 1478 1479 fd_formb->head = form_cmd->head; 1480 fd_formb->cyl = form_cmd->cylinder; 1481 fd_formb->transfer_rate = fd->sc_type->rate; 1482 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1483 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1484 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1485 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1486 1487 memset(il, 0, sizeof il); 1488 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1489 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1490 j++; 1491 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1492 j += fd->sc_type->interleave; 1493 } 1494 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1495 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1496 fd_formb->fd_formb_headno(i) = form_cmd->head; 1497 fd_formb->fd_formb_secno(i) = il[i+1]; 1498 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1499 } 1500 1501 error = fdformat(dev, fd_formb, p); 1502 free(fd_formb, M_TEMP); 1503 return error; 1504 1505 case FDIOCGETOPTS: /* get drive options */ 1506 *(int *)addr = fd->sc_opts; 1507 return 0; 1508 1509 case FDIOCSETOPTS: /* set drive options */ 1510 fd->sc_opts = *(int *)addr; 1511 return 0; 1512 1513 default: 1514 return ENOTTY; 1515 } 1516 1517 #ifdef DIAGNOSTIC 1518 panic("fdioctl: impossible"); 1519 #endif 1520 } 1521 1522 int 1523 fdformat(dev, finfo, p) 1524 dev_t dev; 1525 struct ne7_fd_formb *finfo; 1526 struct proc *p; 1527 { 1528 int rv = 0, s; 1529 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1530 struct fd_type *type = fd->sc_type; 1531 struct buf *bp; 1532 1533 /* set up a buffer header for fdstrategy() */ 1534 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT|M_ZERO); 1535 if(bp == 0) 1536 return ENOBUFS; 1537 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1538 bp->b_proc = p; 1539 bp->b_dev = dev; 1540 1541 /* 1542 * calculate a fake blkno, so fdstrategy() would initiate a 1543 * seek to the requested cylinder 1544 */ 1545 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1546 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1547 1548 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1549 bp->b_data = (caddr_t)finfo; 1550 1551 #ifdef DEBUG 1552 printf("fdformat: blkno %x count %lx\n", bp->b_blkno, bp->b_bcount); 1553 #endif 1554 1555 /* now do the format */ 1556 fdstrategy(bp); 1557 1558 /* ...and wait for it to complete */ 1559 s = splbio(); 1560 while (!(bp->b_flags & B_DONE)) { 1561 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1562 if (rv == EWOULDBLOCK) 1563 break; 1564 } 1565 splx(s); 1566 1567 if (rv == EWOULDBLOCK) { 1568 /* timed out */ 1569 rv = EIO; 1570 biodone(bp); 1571 } 1572 if(bp->b_flags & B_ERROR) { 1573 rv = bp->b_error; 1574 } 1575 free(bp, M_TEMP); 1576 return rv; 1577 } 1578 1579 /* 1580 * Mountroot hook: prompt the user to enter the root file system 1581 * floppy. 1582 */ 1583 void 1584 fd_mountroot_hook(dev) 1585 struct device *dev; 1586 { 1587 int c; 1588 1589 printf("Insert filesystem floppy and press return."); 1590 cnpollc(1); 1591 for (;;) { 1592 c = cngetc(); 1593 if ((c == '\r') || (c == '\n')) { 1594 printf("\n"); 1595 break; 1596 } 1597 } 1598 cnpollc(0); 1599 } 1600