fd.c revision 1.17
1 /* $NetBSD: fd.c,v 1.17 2001/06/07 16:48:09 briggs 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 (at) irbs.UUCP (John Capo) 86 * vak (at) zebub.msk.su (Serge Vakulenko) 87 * ache (at) astral.msk.su (Andrew A. Chernov) 88 * 89 * Copyright (c) 1993, 1994, 1995 by 90 * joerg_wunsch (at) uriah.sax.de (Joerg Wunsch) 91 * dufault (at) 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(algor) && !defined(atari) && \ 102 !defined(bebox) && !defined(i386) && !defined(prep) && \ 103 !defined(sandpoint) 104 #error platform not supported by this driver, yet 105 #endif 106 107 #include <sys/param.h> 108 #include <sys/systm.h> 109 #include <sys/callout.h> 110 #include <sys/kernel.h> 111 #include <sys/file.h> 112 #include <sys/ioctl.h> 113 #include <sys/device.h> 114 #include <sys/disklabel.h> 115 #include <sys/dkstat.h> 116 #include <sys/disk.h> 117 #include <sys/buf.h> 118 #include <sys/malloc.h> 119 #include <sys/uio.h> 120 #include <sys/syslog.h> 121 #include <sys/queue.h> 122 #include <sys/proc.h> 123 #include <sys/fdio.h> 124 #include <sys/conf.h> 125 #if NRND > 0 126 #include <sys/rnd.h> 127 #endif 128 129 #include <uvm/uvm_extern.h> 130 131 #include <dev/cons.h> 132 133 #include <machine/cpu.h> 134 #include <machine/bus.h> 135 136 #if defined(atari) 137 /* 138 * On the atari, it is configured as fdcisa 139 */ 140 #define FDCCF_DRIVE FDCISACF_DRIVE 141 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 142 143 #define fd_cd fdisa_cd 144 #define fd_ca fdisa_ca 145 #endif /* atari */ 146 147 #include <machine/intr.h> 148 149 #include <dev/isa/isavar.h> 150 #include <dev/isa/isadmavar.h> 151 152 #include <dev/isa/fdreg.h> 153 #include <dev/isa/fdcvar.h> 154 155 #if defined(i386) 156 157 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 158 #include <i386/isa/nvram.h> 159 160 #include "mca.h" 161 #if NMCA > 0 162 #include <machine/mca_machdep.h> /* for MCA_system */ 163 #endif 164 165 #endif /* i386 */ 166 167 bdev_decl(fd); 168 cdev_decl(fd); 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 tranferring */ 246 int sc_nbytes; /* number of bytes currently tranferring */ 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 buf_queue 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 void fdgetdisklabel __P((struct fd_softc *)); 277 int fd_get_parms __P((struct fd_softc *)); 278 void fdstrategy __P((struct buf *)); 279 void fdstart __P((struct fd_softc *)); 280 281 struct dkdriver fddkdriver = { fdstrategy }; 282 283 #if defined(i386) 284 const struct fd_type *fd_nvtotype __P((char *, int, int)); 285 #endif /* i386 */ 286 void fd_set_motor __P((struct fdc_softc *fdc, int reset)); 287 void fd_motor_off __P((void *arg)); 288 void fd_motor_on __P((void *arg)); 289 int fdcresult __P((struct fdc_softc *fdc)); 290 void fdcstart __P((struct fdc_softc *fdc)); 291 void fdcstatus __P((struct device *dv, int n, char *s)); 292 void fdctimeout __P((void *arg)); 293 void fdcpseudointr __P((void *arg)); 294 void fdcretry __P((struct fdc_softc *fdc)); 295 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 296 __inline const struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 297 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 298 299 void fd_mountroot_hook __P((struct device *)); 300 301 /* 302 * Arguments passed between fdcattach and fdprobe. 303 */ 304 struct fdc_attach_args { 305 int fa_drive; 306 const struct fd_type *fa_deftype; 307 }; 308 309 /* 310 * Print the location of a disk drive (called just before attaching the 311 * the drive). If `fdc' is not NULL, the drive was found but was not 312 * in the system config file; print the drive name as well. 313 * Return QUIET (config_find ignores this if the device was configured) to 314 * avoid printing `fdN not configured' messages. 315 */ 316 int 317 fdprint(aux, fdc) 318 void *aux; 319 const char *fdc; 320 { 321 register struct fdc_attach_args *fa = aux; 322 323 if (!fdc) 324 printf(" drive %d", fa->fa_drive); 325 return QUIET; 326 } 327 328 void 329 fdcattach(fdc) 330 struct fdc_softc *fdc; 331 { 332 struct fdc_attach_args fa; 333 bus_space_tag_t iot; 334 bus_space_handle_t ioh; 335 #if defined(i386) 336 int type; 337 #endif 338 339 iot = fdc->sc_iot; 340 ioh = fdc->sc_ioh; 341 callout_init(&fdc->sc_timo_ch); 342 callout_init(&fdc->sc_intr_ch); 343 344 fdc->sc_state = DEVIDLE; 345 TAILQ_INIT(&fdc->sc_drives); 346 347 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 348 349 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 350 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 351 printf("%s: can't set up ISA DMA map\n", 352 fdc->sc_dev.dv_xname); 353 return; 354 } 355 356 /* 357 * Reset the controller to get it into a known state. Not all 358 * probes necessarily need do this to discover the controller up 359 * front, so don't assume anything. 360 */ 361 362 bus_space_write_1(iot, ioh, fdout, 0); 363 delay(100); 364 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 365 366 /* see if it can handle a command */ 367 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 368 printf ("%s: can't reset controller\n", fdc->sc_dev.dv_xname); 369 return; 370 } 371 out_fdc(iot, ioh, 0xdf); 372 out_fdc(iot, ioh, 2); 373 374 #if defined(i386) 375 /* 376 * The NVRAM info only tells us about the first two disks on the 377 * `primary' floppy controller. 378 */ 379 if (fdc->sc_dev.dv_unit == 0) 380 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 381 else 382 type = -1; 383 #endif /* i386 */ 384 385 /* physical limit: four drives per controller. */ 386 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 387 #if defined(i386) 388 if (type >= 0 && fa.fa_drive < 2) 389 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 390 type, fa.fa_drive); 391 else 392 fa.fa_deftype = NULL; /* unknown */ 393 #elif defined(atari) 394 /* 395 * Atari has a different ordening, defaults to 1.44 396 */ 397 fa.fa_deftype = &fd_types[2]; 398 #else 399 /* 400 * Default to 1.44MB on Alpha and BeBox. How do we tell 401 * on these platforms? 402 */ 403 fa.fa_deftype = &fd_types[0]; 404 #endif /* i386 */ 405 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 406 } 407 } 408 409 int 410 fdprobe(parent, match, aux) 411 struct device *parent; 412 struct cfdata *match; 413 void *aux; 414 { 415 struct fdc_softc *fdc = (void *)parent; 416 struct cfdata *cf = match; 417 struct fdc_attach_args *fa = aux; 418 int drive = fa->fa_drive; 419 bus_space_tag_t iot = fdc->sc_iot; 420 bus_space_handle_t ioh = fdc->sc_ioh; 421 int n; 422 423 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 424 cf->cf_loc[FDCCF_DRIVE] != drive) 425 return 0; 426 /* 427 * XXX 428 * This is to work around some odd interactions between this driver 429 * and SMC Ethernet cards. 430 */ 431 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 432 return 0; 433 434 /* select drive and turn on motor */ 435 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 436 /* wait for motor to spin up */ 437 delay(250000); 438 out_fdc(iot, ioh, NE7CMD_RECAL); 439 out_fdc(iot, ioh, drive); 440 /* wait for recalibrate */ 441 delay(2000000); 442 out_fdc(iot, ioh, NE7CMD_SENSEI); 443 n = fdcresult(fdc); 444 #ifdef FD_DEBUG 445 { 446 int i; 447 printf("fdprobe: status"); 448 for (i = 0; i < n; i++) 449 printf(" %x", fdc->sc_status[i]); 450 printf("\n"); 451 } 452 #endif 453 /* turn off motor */ 454 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 455 456 #if defined(bebox) /* XXX What is this about? --thorpej (at) netbsd.org */ 457 if (n != 2 || (fdc->sc_status[1] != 0)) 458 return 0; 459 #else 460 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 461 return 0; 462 #endif /* bebox */ 463 464 return 1; 465 } 466 467 /* 468 * Controller is working, and drive responded. Attach it. 469 */ 470 void 471 fdattach(parent, self, aux) 472 struct device *parent, *self; 473 void *aux; 474 { 475 struct fdc_softc *fdc = (void *)parent; 476 struct fd_softc *fd = (void *)self; 477 struct fdc_attach_args *fa = aux; 478 const struct fd_type *type = fa->fa_deftype; 479 int drive = fa->fa_drive; 480 481 callout_init(&fd->sc_motoron_ch); 482 callout_init(&fd->sc_motoroff_ch); 483 484 /* XXX Allow `flags' to override device type? */ 485 486 if (type) 487 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 488 type->cyls, type->heads, type->sectrac); 489 else 490 printf(": density unknown\n"); 491 492 BUFQ_INIT(&fd->sc_q); 493 fd->sc_cylin = -1; 494 fd->sc_drive = drive; 495 fd->sc_deftype = type; 496 fdc->sc_fd[drive] = fd; 497 498 /* 499 * Initialize and attach the disk structure. 500 */ 501 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 502 fd->sc_dk.dk_driver = &fddkdriver; 503 disk_attach(&fd->sc_dk); 504 505 /* 506 * Establish a mountroot hook. 507 */ 508 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 509 510 /* Needed to power off if the motor is on when we halt. */ 511 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 512 513 #if NRND > 0 514 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 515 RND_TYPE_DISK, 0); 516 #endif 517 } 518 519 #if defined(i386) 520 /* 521 * Translate nvram type into internal data structure. Return NULL for 522 * none/unknown/unusable. 523 */ 524 const struct fd_type * 525 fd_nvtotype(fdc, nvraminfo, drive) 526 char *fdc; 527 int nvraminfo, drive; 528 { 529 int type; 530 531 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 532 switch (type) { 533 case NVRAM_DISKETTE_NONE: 534 return NULL; 535 case NVRAM_DISKETTE_12M: 536 return &fd_types[1]; 537 case NVRAM_DISKETTE_TYPE5: 538 case NVRAM_DISKETTE_TYPE6: 539 /* XXX We really ought to handle 2.88MB format. */ 540 case NVRAM_DISKETTE_144M: 541 #if NMCA > 0 542 if (MCA_system) 543 return &mca_fd_types[0]; 544 else 545 #endif /* NMCA > 0 */ 546 return &fd_types[0]; 547 case NVRAM_DISKETTE_360K: 548 return &fd_types[3]; 549 case NVRAM_DISKETTE_720K: 550 #if NMCA > 0 551 if (MCA_system) 552 return &mca_fd_types[1]; 553 else 554 #endif /* NMCA > 0 */ 555 return &fd_types[4]; 556 default: 557 printf("%s: drive %d: unknown device type 0x%x\n", 558 fdc, drive, type); 559 return NULL; 560 } 561 } 562 #endif /* i386 */ 563 564 __inline const struct fd_type * 565 fd_dev_to_type(fd, dev) 566 struct fd_softc *fd; 567 dev_t dev; 568 { 569 int type = FDTYPE(dev); 570 571 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 572 return NULL; 573 return type ? &fd_types[type - 1] : fd->sc_deftype; 574 } 575 576 void 577 fdstrategy(bp) 578 register struct buf *bp; /* IO operation to perform */ 579 { 580 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 581 int sz; 582 int s; 583 584 /* Valid unit, controller, and request? */ 585 if (bp->b_blkno < 0 || 586 ((bp->b_bcount % FDC_BSIZE) != 0 && 587 (bp->b_flags & B_FORMAT) == 0)) { 588 bp->b_error = EINVAL; 589 goto bad; 590 } 591 592 /* If it's a null transfer, return immediately. */ 593 if (bp->b_bcount == 0) 594 goto done; 595 596 sz = howmany(bp->b_bcount, FDC_BSIZE); 597 598 if (bp->b_blkno + sz > fd->sc_type->size) { 599 sz = fd->sc_type->size - bp->b_blkno; 600 if (sz == 0) { 601 /* If exactly at end of disk, return EOF. */ 602 goto done; 603 } 604 if (sz < 0) { 605 /* If past end of disk, return EINVAL. */ 606 bp->b_error = EINVAL; 607 goto bad; 608 } 609 /* Otherwise, truncate request. */ 610 bp->b_bcount = sz << DEV_BSHIFT; 611 } 612 613 bp->b_rawblkno = bp->b_blkno; 614 bp->b_cylinder = 615 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 616 617 #ifdef FD_DEBUG 618 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld sz %d\n", 619 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 620 #endif 621 622 /* Queue transfer on drive, activate drive and controller if idle. */ 623 s = splbio(); 624 disksort_cylinder(&fd->sc_q, bp); 625 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 626 if (fd->sc_active == 0) 627 fdstart(fd); 628 #ifdef DIAGNOSTIC 629 else { 630 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 631 if (fdc->sc_state == DEVIDLE) { 632 printf("fdstrategy: controller inactive\n"); 633 fdcstart(fdc); 634 } 635 } 636 #endif 637 splx(s); 638 return; 639 640 bad: 641 bp->b_flags |= B_ERROR; 642 done: 643 /* Toss transfer; we're done early. */ 644 bp->b_resid = bp->b_bcount; 645 biodone(bp); 646 } 647 648 void 649 fdstart(fd) 650 struct fd_softc *fd; 651 { 652 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 653 int active = fdc->sc_drives.tqh_first != 0; 654 655 /* Link into controller queue. */ 656 fd->sc_active = 1; 657 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 658 659 /* If controller not already active, start it. */ 660 if (!active) 661 fdcstart(fdc); 662 } 663 664 void 665 fdfinish(fd, bp) 666 struct fd_softc *fd; 667 struct buf *bp; 668 { 669 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 670 671 /* 672 * Move this drive to the end of the queue to give others a `fair' 673 * chance. We only force a switch if N operations are completed while 674 * another drive is waiting to be serviced, since there is a long motor 675 * startup delay whenever we switch. 676 */ 677 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 678 fd->sc_ops = 0; 679 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 680 if (BUFQ_NEXT(bp) != NULL) 681 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 682 else 683 fd->sc_active = 0; 684 } 685 bp->b_resid = fd->sc_bcount; 686 fd->sc_skip = 0; 687 BUFQ_REMOVE(&fd->sc_q, bp); 688 689 #if NRND > 0 690 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 691 #endif 692 693 biodone(bp); 694 /* turn off motor 5s from now */ 695 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 696 fdc->sc_state = DEVIDLE; 697 } 698 699 int 700 fdread(dev, uio, flags) 701 dev_t dev; 702 struct uio *uio; 703 int flags; 704 { 705 706 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 707 } 708 709 int 710 fdwrite(dev, uio, flags) 711 dev_t dev; 712 struct uio *uio; 713 int flags; 714 { 715 716 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 717 } 718 719 void 720 fd_set_motor(fdc, reset) 721 struct fdc_softc *fdc; 722 int reset; 723 { 724 struct fd_softc *fd; 725 u_char status; 726 int n; 727 728 if ((fd = fdc->sc_drives.tqh_first) != NULL) 729 status = fd->sc_drive; 730 else 731 status = 0; 732 if (!reset) 733 status |= FDO_FRST | FDO_FDMAEN; 734 for (n = 0; n < 4; n++) 735 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 736 status |= FDO_MOEN(n); 737 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 738 } 739 740 void 741 fd_motor_off(arg) 742 void *arg; 743 { 744 struct fd_softc *fd = arg; 745 int s; 746 747 s = splbio(); 748 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 749 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 750 splx(s); 751 } 752 753 void 754 fd_motor_on(arg) 755 void *arg; 756 { 757 struct fd_softc *fd = arg; 758 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 759 int s; 760 761 s = splbio(); 762 fd->sc_flags &= ~FD_MOTOR_WAIT; 763 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 764 (void) fdcintr(fdc); 765 splx(s); 766 } 767 768 int 769 fdcresult(fdc) 770 struct fdc_softc *fdc; 771 { 772 bus_space_tag_t iot = fdc->sc_iot; 773 bus_space_handle_t ioh = fdc->sc_ioh; 774 u_char i; 775 int j = 100000, 776 n = 0; 777 778 for (; j; j--) { 779 i = bus_space_read_1(iot, ioh, fdsts) & 780 (NE7_DIO | NE7_RQM | NE7_CB); 781 if (i == NE7_RQM) 782 return n; 783 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 784 if (n >= sizeof(fdc->sc_status)) { 785 log(LOG_ERR, "fdcresult: overrun\n"); 786 return -1; 787 } 788 fdc->sc_status[n++] = 789 bus_space_read_1(iot, ioh, fddata); 790 } 791 delay(10); 792 } 793 log(LOG_ERR, "fdcresult: timeout\n"); 794 return -1; 795 } 796 797 int 798 out_fdc(iot, ioh, x) 799 bus_space_tag_t iot; 800 bus_space_handle_t ioh; 801 u_char x; 802 { 803 int i = 100000; 804 805 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_DIO) && i-- > 0); 806 if (i <= 0) 807 return -1; 808 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0); 809 if (i <= 0) 810 return -1; 811 bus_space_write_1(iot, ioh, fddata, x); 812 return 0; 813 } 814 815 int 816 fdopen(dev, flags, mode, p) 817 dev_t dev; 818 int flags; 819 int mode; 820 struct proc *p; 821 { 822 struct fd_softc *fd; 823 const struct fd_type *type; 824 825 fd = device_lookup(&fd_cd, FDUNIT(dev)); 826 if (fd == NULL) 827 return (ENXIO); 828 829 type = fd_dev_to_type(fd, dev); 830 if (type == NULL) 831 return ENXIO; 832 833 if ((fd->sc_flags & FD_OPEN) != 0 && 834 memcmp(fd->sc_type, type, sizeof(*type))) 835 return EBUSY; 836 837 fd->sc_type_copy = *type; 838 fd->sc_type = &fd->sc_type_copy; 839 fd->sc_cylin = -1; 840 fd->sc_flags |= FD_OPEN; 841 842 return 0; 843 } 844 845 int 846 fdclose(dev, flags, mode, p) 847 dev_t dev; 848 int flags; 849 int mode; 850 struct proc *p; 851 { 852 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 853 854 fd->sc_flags &= ~FD_OPEN; 855 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 856 return 0; 857 } 858 859 void 860 fdcstart(fdc) 861 struct fdc_softc *fdc; 862 { 863 864 #ifdef DIAGNOSTIC 865 /* only got here if controller's drive queue was inactive; should 866 be in idle state */ 867 if (fdc->sc_state != DEVIDLE) { 868 printf("fdcstart: not idle\n"); 869 return; 870 } 871 #endif 872 (void) fdcintr(fdc); 873 } 874 875 void 876 fdcstatus(dv, n, s) 877 struct device *dv; 878 int n; 879 char *s; 880 { 881 struct fdc_softc *fdc = (void *)dv->dv_parent; 882 char bits[64]; 883 884 if (n == 0) { 885 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 886 (void) fdcresult(fdc); 887 n = 2; 888 } 889 890 printf("%s: %s", dv->dv_xname, s); 891 892 switch (n) { 893 case 0: 894 printf("\n"); 895 break; 896 case 2: 897 printf(" (st0 %s cyl %d)\n", 898 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 899 bits, sizeof(bits)), fdc->sc_status[1]); 900 break; 901 case 7: 902 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 903 NE7_ST0BITS, bits, sizeof(bits))); 904 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 905 NE7_ST1BITS, bits, sizeof(bits))); 906 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 907 NE7_ST2BITS, bits, sizeof(bits))); 908 printf(" cyl %d head %d sec %d)\n", 909 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 910 break; 911 #ifdef DIAGNOSTIC 912 default: 913 printf("\nfdcstatus: weird size"); 914 break; 915 #endif 916 } 917 } 918 919 void 920 fdctimeout(arg) 921 void *arg; 922 { 923 struct fdc_softc *fdc = arg; 924 struct fd_softc *fd = fdc->sc_drives.tqh_first; 925 int s; 926 927 s = splbio(); 928 #ifdef DEBUG 929 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 930 #endif 931 fdcstatus(&fd->sc_dev, 0, "timeout"); 932 933 if (BUFQ_FIRST(&fd->sc_q) != NULL) 934 fdc->sc_state++; 935 else 936 fdc->sc_state = DEVIDLE; 937 938 (void) fdcintr(fdc); 939 splx(s); 940 } 941 942 void 943 fdcpseudointr(arg) 944 void *arg; 945 { 946 int s; 947 948 /* Just ensure it has the right spl. */ 949 s = splbio(); 950 (void) fdcintr(arg); 951 splx(s); 952 } 953 954 int 955 fdcintr(arg) 956 void *arg; 957 { 958 struct fdc_softc *fdc = arg; 959 #define st0 fdc->sc_status[0] 960 #define cyl fdc->sc_status[1] 961 struct fd_softc *fd; 962 struct buf *bp; 963 bus_space_tag_t iot = fdc->sc_iot; 964 bus_space_handle_t ioh = fdc->sc_ioh; 965 int read, head, sec, i, nblks; 966 struct fd_type *type; 967 struct ne7_fd_formb *finfo = NULL; 968 969 loop: 970 /* Is there a drive for the controller to do a transfer with? */ 971 fd = fdc->sc_drives.tqh_first; 972 if (fd == NULL) { 973 fdc->sc_state = DEVIDLE; 974 return 1; 975 } 976 977 /* Is there a transfer to this drive? If not, deactivate drive. */ 978 bp = BUFQ_FIRST(&fd->sc_q); 979 if (bp == NULL) { 980 fd->sc_ops = 0; 981 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 982 fd->sc_active = 0; 983 goto loop; 984 } 985 986 if (bp->b_flags & B_FORMAT) 987 finfo = (struct ne7_fd_formb *)bp->b_data; 988 989 switch (fdc->sc_state) { 990 case DEVIDLE: 991 fdc->sc_errors = 0; 992 fd->sc_skip = 0; 993 fd->sc_bcount = bp->b_bcount; 994 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 995 callout_stop(&fd->sc_motoroff_ch); 996 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 997 fdc->sc_state = MOTORWAIT; 998 return 1; 999 } 1000 if ((fd->sc_flags & FD_MOTOR) == 0) { 1001 /* Turn on the motor, being careful about pairing. */ 1002 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1003 if (ofd && ofd->sc_flags & FD_MOTOR) { 1004 callout_stop(&ofd->sc_motoroff_ch); 1005 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1006 } 1007 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1008 fd_set_motor(fdc, 0); 1009 fdc->sc_state = MOTORWAIT; 1010 /* Allow .25s for motor to stabilize. */ 1011 callout_reset(&fd->sc_motoron_ch, hz / 4, 1012 fd_motor_on, fd); 1013 return 1; 1014 } 1015 /* Make sure the right drive is selected. */ 1016 fd_set_motor(fdc, 0); 1017 1018 /* fall through */ 1019 case DOSEEK: 1020 doseek: 1021 if (fd->sc_cylin == bp->b_cylinder) 1022 goto doio; 1023 1024 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1025 out_fdc(iot, ioh, fd->sc_type->steprate); 1026 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1027 1028 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1029 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1030 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1031 1032 fd->sc_cylin = -1; 1033 fdc->sc_state = SEEKWAIT; 1034 1035 fd->sc_dk.dk_seek++; 1036 disk_busy(&fd->sc_dk); 1037 1038 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1039 return 1; 1040 1041 case DOIO: 1042 doio: 1043 type = fd->sc_type; 1044 if (finfo) 1045 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1046 (char *)finfo; 1047 sec = fd->sc_blkno % type->seccyl; 1048 nblks = type->seccyl - sec; 1049 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1050 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1051 fd->sc_nblks = nblks; 1052 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1053 head = sec / type->sectrac; 1054 sec -= head * type->sectrac; 1055 #ifdef DIAGNOSTIC 1056 { 1057 int block; 1058 block = (fd->sc_cylin * type->heads + head) 1059 * type->sectrac + sec; 1060 if (block != fd->sc_blkno) { 1061 printf("fdcintr: block %d != blkno %d\n", 1062 block, fd->sc_blkno); 1063 #ifdef DDB 1064 Debugger(); 1065 #endif 1066 } 1067 } 1068 #endif 1069 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1070 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1071 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1072 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1073 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1074 #ifdef FD_DEBUG 1075 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1076 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1077 head, sec, nblks); 1078 #endif 1079 if (finfo) { 1080 /* formatting */ 1081 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1082 fdc->sc_errors = 4; 1083 fdcretry(fdc); 1084 goto loop; 1085 } 1086 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1087 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1088 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1089 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1090 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1091 } else { 1092 if (read) 1093 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1094 else 1095 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1096 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1097 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1098 out_fdc(iot, ioh, head); 1099 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1100 out_fdc(iot, ioh, type->secsize);/* sector size */ 1101 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1102 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1103 out_fdc(iot, ioh, type->datalen);/* data length */ 1104 } 1105 fdc->sc_state = IOCOMPLETE; 1106 1107 disk_busy(&fd->sc_dk); 1108 1109 /* allow 2 seconds for operation */ 1110 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1111 return 1; /* will return later */ 1112 1113 case SEEKWAIT: 1114 callout_stop(&fdc->sc_timo_ch); 1115 fdc->sc_state = SEEKCOMPLETE; 1116 /* allow 1/50 second for heads to settle */ 1117 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1118 return 1; 1119 1120 case SEEKCOMPLETE: 1121 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1122 1123 /* Make sure seek really happened. */ 1124 out_fdc(iot, ioh, NE7CMD_SENSEI); 1125 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1126 cyl != bp->b_cylinder * fd->sc_type->step) { 1127 #ifdef FD_DEBUG 1128 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1129 #endif 1130 fdcretry(fdc); 1131 goto loop; 1132 } 1133 fd->sc_cylin = bp->b_cylinder; 1134 goto doio; 1135 1136 case IOTIMEDOUT: 1137 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1138 case SEEKTIMEDOUT: 1139 case RECALTIMEDOUT: 1140 case RESETTIMEDOUT: 1141 fdcretry(fdc); 1142 goto loop; 1143 1144 case IOCOMPLETE: /* IO DONE, post-analyze */ 1145 callout_stop(&fdc->sc_timo_ch); 1146 1147 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1148 1149 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1150 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1151 #ifdef FD_DEBUG 1152 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1153 "read failed" : "write failed"); 1154 printf("blkno %d nblks %d\n", 1155 fd->sc_blkno, fd->sc_nblks); 1156 #endif 1157 fdcretry(fdc); 1158 goto loop; 1159 } 1160 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1161 if (fdc->sc_errors) { 1162 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1163 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1164 printf("\n"); 1165 fdc->sc_errors = 0; 1166 } 1167 fd->sc_blkno += fd->sc_nblks; 1168 fd->sc_skip += fd->sc_nbytes; 1169 fd->sc_bcount -= fd->sc_nbytes; 1170 if (!finfo && fd->sc_bcount > 0) { 1171 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1172 goto doseek; 1173 } 1174 fdfinish(fd, bp); 1175 goto loop; 1176 1177 case DORESET: 1178 /* try a reset, keep motor on */ 1179 fd_set_motor(fdc, 1); 1180 delay(100); 1181 fd_set_motor(fdc, 0); 1182 fdc->sc_state = RESETCOMPLETE; 1183 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1184 return 1; /* will return later */ 1185 1186 case RESETCOMPLETE: 1187 callout_stop(&fdc->sc_timo_ch); 1188 /* clear the controller output buffer */ 1189 for (i = 0; i < 4; i++) { 1190 out_fdc(iot, ioh, NE7CMD_SENSEI); 1191 (void) fdcresult(fdc); 1192 } 1193 1194 /* fall through */ 1195 case DORECAL: 1196 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1197 out_fdc(iot, ioh, fd->sc_drive); 1198 fdc->sc_state = RECALWAIT; 1199 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1200 return 1; /* will return later */ 1201 1202 case RECALWAIT: 1203 callout_stop(&fdc->sc_timo_ch); 1204 fdc->sc_state = RECALCOMPLETE; 1205 /* allow 1/30 second for heads to settle */ 1206 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1207 return 1; /* will return later */ 1208 1209 case RECALCOMPLETE: 1210 out_fdc(iot, ioh, NE7CMD_SENSEI); 1211 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1212 #ifdef FD_DEBUG 1213 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1214 #endif 1215 fdcretry(fdc); 1216 goto loop; 1217 } 1218 fd->sc_cylin = 0; 1219 goto doseek; 1220 1221 case MOTORWAIT: 1222 if (fd->sc_flags & FD_MOTOR_WAIT) 1223 return 1; /* time's not up yet */ 1224 goto doseek; 1225 1226 default: 1227 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1228 return 1; 1229 } 1230 #ifdef DIAGNOSTIC 1231 panic("fdcintr: impossible"); 1232 #endif 1233 #undef st0 1234 #undef cyl 1235 } 1236 1237 void 1238 fdcretry(fdc) 1239 struct fdc_softc *fdc; 1240 { 1241 char bits[64]; 1242 struct fd_softc *fd; 1243 struct buf *bp; 1244 1245 fd = fdc->sc_drives.tqh_first; 1246 bp = BUFQ_FIRST(&fd->sc_q); 1247 1248 if (fd->sc_opts & FDOPT_NORETRY) 1249 goto fail; 1250 switch (fdc->sc_errors) { 1251 case 0: 1252 /* try again */ 1253 fdc->sc_state = DOSEEK; 1254 break; 1255 1256 case 1: case 2: case 3: 1257 /* didn't work; try recalibrating */ 1258 fdc->sc_state = DORECAL; 1259 break; 1260 1261 case 4: 1262 /* still no go; reset the bastard */ 1263 fdc->sc_state = DORESET; 1264 break; 1265 1266 default: 1267 fail: 1268 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1269 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1270 fd->sc_skip / FDC_BSIZE, 1271 (struct disklabel *)NULL); 1272 1273 printf(" (st0 %s", 1274 bitmask_snprintf(fdc->sc_status[0], 1275 NE7_ST0BITS, bits, 1276 sizeof(bits))); 1277 printf(" st1 %s", 1278 bitmask_snprintf(fdc->sc_status[1], 1279 NE7_ST1BITS, bits, 1280 sizeof(bits))); 1281 printf(" st2 %s", 1282 bitmask_snprintf(fdc->sc_status[2], 1283 NE7_ST2BITS, bits, 1284 sizeof(bits))); 1285 printf(" cyl %d head %d sec %d)\n", 1286 fdc->sc_status[3], 1287 fdc->sc_status[4], 1288 fdc->sc_status[5]); 1289 } 1290 1291 bp->b_flags |= B_ERROR; 1292 bp->b_error = EIO; 1293 fdfinish(fd, bp); 1294 } 1295 fdc->sc_errors++; 1296 } 1297 1298 int 1299 fdsize(dev) 1300 dev_t dev; 1301 { 1302 1303 /* Swapping to floppies would not make sense. */ 1304 return -1; 1305 } 1306 1307 int 1308 fddump(dev, blkno, va, size) 1309 dev_t dev; 1310 daddr_t blkno; 1311 caddr_t va; 1312 size_t size; 1313 { 1314 1315 /* Not implemented. */ 1316 return ENXIO; 1317 } 1318 1319 int 1320 fdioctl(dev, cmd, addr, flag, p) 1321 dev_t dev; 1322 u_long cmd; 1323 caddr_t addr; 1324 int flag; 1325 struct proc *p; 1326 { 1327 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1328 struct fdformat_parms *form_parms; 1329 struct fdformat_cmd *form_cmd; 1330 struct ne7_fd_formb *fd_formb; 1331 struct disklabel buffer; 1332 int error; 1333 unsigned int scratch; 1334 int il[FD_MAX_NSEC + 1]; 1335 register int i, j; 1336 #ifdef __HAVE_OLD_DISKLABEL 1337 struct disklabel newlabel; 1338 #endif 1339 1340 switch (cmd) { 1341 case DIOCGDINFO: 1342 #ifdef __HAVE_OLD_DISKLABEL 1343 case ODIOCGDINFO: 1344 #endif 1345 memset(&buffer, 0, sizeof(buffer)); 1346 1347 buffer.d_secpercyl = fd->sc_type->seccyl; 1348 buffer.d_type = DTYPE_FLOPPY; 1349 buffer.d_secsize = FDC_BSIZE; 1350 1351 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1352 return EINVAL; 1353 1354 #ifdef __HAVE_OLD_DISKLABEL 1355 if (cmd == ODIOCGDINFO) { 1356 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1357 return ENOTTY; 1358 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1359 } else 1360 #endif 1361 *(struct disklabel *)addr = buffer; 1362 return 0; 1363 1364 case DIOCWLABEL: 1365 if ((flag & FWRITE) == 0) 1366 return EBADF; 1367 /* XXX do something */ 1368 return 0; 1369 1370 case DIOCWDINFO: 1371 #ifdef __HAVE_OLD_DISKLABEL 1372 case ODIOCWDINFO: 1373 #endif 1374 { 1375 struct disklabel *lp; 1376 1377 if ((flag & FWRITE) == 0) 1378 return EBADF; 1379 #ifdef __HAVE_OLD_DISKLABEL 1380 if (cmd == ODIOCWDINFO) { 1381 memset(&newlabel, 0, sizeof newlabel); 1382 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1383 lp = &newlabel; 1384 } else 1385 #endif 1386 lp = (struct disklabel *)addr; 1387 1388 error = setdisklabel(&buffer, lp, 0, NULL); 1389 if (error) 1390 return error; 1391 1392 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1393 return error; 1394 } 1395 1396 case FDIOCGETFORMAT: 1397 form_parms = (struct fdformat_parms *)addr; 1398 form_parms->fdformat_version = FDFORMAT_VERSION; 1399 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1400 form_parms->ncyl = fd->sc_type->cyls; 1401 form_parms->nspt = fd->sc_type->sectrac; 1402 form_parms->ntrk = fd->sc_type->heads; 1403 form_parms->stepspercyl = fd->sc_type->step; 1404 form_parms->gaplen = fd->sc_type->gap2; 1405 form_parms->fillbyte = fd->sc_type->fillbyte; 1406 form_parms->interleave = fd->sc_type->interleave; 1407 switch (fd->sc_type->rate) { 1408 case FDC_500KBPS: 1409 form_parms->xfer_rate = 500 * 1024; 1410 break; 1411 case FDC_300KBPS: 1412 form_parms->xfer_rate = 300 * 1024; 1413 break; 1414 case FDC_250KBPS: 1415 form_parms->xfer_rate = 250 * 1024; 1416 break; 1417 default: 1418 return EINVAL; 1419 } 1420 return 0; 1421 1422 case FDIOCSETFORMAT: 1423 if((flag & FWRITE) == 0) 1424 return EBADF; /* must be opened for writing */ 1425 form_parms = (struct fdformat_parms *)addr; 1426 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1427 return EINVAL; /* wrong version of formatting prog */ 1428 1429 scratch = form_parms->nbps >> 7; 1430 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1431 scratch & ~(1 << (ffs(scratch)-1))) 1432 /* not a power-of-two multiple of 128 */ 1433 return EINVAL; 1434 1435 switch (form_parms->xfer_rate) { 1436 case 500 * 1024: 1437 fd->sc_type->rate = FDC_500KBPS; 1438 break; 1439 case 300 * 1024: 1440 fd->sc_type->rate = FDC_300KBPS; 1441 break; 1442 case 250 * 1024: 1443 fd->sc_type->rate = FDC_250KBPS; 1444 break; 1445 default: 1446 return EINVAL; 1447 } 1448 1449 if (form_parms->nspt > FD_MAX_NSEC || 1450 form_parms->fillbyte > 0xff || 1451 form_parms->interleave > 0xff) 1452 return EINVAL; 1453 fd->sc_type->sectrac = form_parms->nspt; 1454 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1455 return EINVAL; 1456 fd->sc_type->heads = form_parms->ntrk; 1457 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1458 fd->sc_type->secsize = ffs(scratch)-1; 1459 fd->sc_type->gap2 = form_parms->gaplen; 1460 fd->sc_type->cyls = form_parms->ncyl; 1461 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1462 form_parms->nbps / DEV_BSIZE; 1463 fd->sc_type->step = form_parms->stepspercyl; 1464 fd->sc_type->fillbyte = form_parms->fillbyte; 1465 fd->sc_type->interleave = form_parms->interleave; 1466 return 0; 1467 1468 case FDIOCFORMAT_TRACK: 1469 if((flag & FWRITE) == 0) 1470 return EBADF; /* must be opened for writing */ 1471 form_cmd = (struct fdformat_cmd *)addr; 1472 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1473 return EINVAL; /* wrong version of formatting prog */ 1474 1475 if (form_cmd->head >= fd->sc_type->heads || 1476 form_cmd->cylinder >= fd->sc_type->cyls) { 1477 return EINVAL; 1478 } 1479 1480 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1481 M_TEMP, M_NOWAIT); 1482 if (fd_formb == 0) 1483 return ENOMEM; 1484 1485 fd_formb->head = form_cmd->head; 1486 fd_formb->cyl = form_cmd->cylinder; 1487 fd_formb->transfer_rate = fd->sc_type->rate; 1488 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1489 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1490 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1491 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1492 1493 memset(il, 0, sizeof il); 1494 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1495 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1496 j++; 1497 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1498 j += fd->sc_type->interleave; 1499 } 1500 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1501 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1502 fd_formb->fd_formb_headno(i) = form_cmd->head; 1503 fd_formb->fd_formb_secno(i) = il[i+1]; 1504 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1505 } 1506 1507 error = fdformat(dev, fd_formb, p); 1508 free(fd_formb, M_TEMP); 1509 return error; 1510 1511 case FDIOCGETOPTS: /* get drive options */ 1512 *(int *)addr = fd->sc_opts; 1513 return 0; 1514 1515 case FDIOCSETOPTS: /* set drive options */ 1516 fd->sc_opts = *(int *)addr; 1517 return 0; 1518 1519 default: 1520 return ENOTTY; 1521 } 1522 1523 #ifdef DIAGNOSTIC 1524 panic("fdioctl: impossible"); 1525 #endif 1526 } 1527 1528 int 1529 fdformat(dev, finfo, p) 1530 dev_t dev; 1531 struct ne7_fd_formb *finfo; 1532 struct proc *p; 1533 { 1534 int rv = 0, s; 1535 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1536 struct fd_type *type = fd->sc_type; 1537 struct buf *bp; 1538 1539 /* set up a buffer header for fdstrategy() */ 1540 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 1541 if(bp == 0) 1542 return ENOBUFS; 1543 memset((void *)bp, 0, sizeof(struct buf)); 1544 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1545 bp->b_proc = p; 1546 bp->b_dev = dev; 1547 1548 /* 1549 * calculate a fake blkno, so fdstrategy() would initiate a 1550 * seek to the requested cylinder 1551 */ 1552 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1553 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1554 1555 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1556 bp->b_data = (caddr_t)finfo; 1557 1558 #ifdef DEBUG 1559 printf("fdformat: blkno %x count %lx\n", bp->b_blkno, bp->b_bcount); 1560 #endif 1561 1562 /* now do the format */ 1563 fdstrategy(bp); 1564 1565 /* ...and wait for it to complete */ 1566 s = splbio(); 1567 while (!(bp->b_flags & B_DONE)) { 1568 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1569 if (rv == EWOULDBLOCK) 1570 break; 1571 } 1572 splx(s); 1573 1574 if (rv == EWOULDBLOCK) { 1575 /* timed out */ 1576 rv = EIO; 1577 biodone(bp); 1578 } 1579 if(bp->b_flags & B_ERROR) { 1580 rv = bp->b_error; 1581 } 1582 free(bp, M_TEMP); 1583 return rv; 1584 } 1585 1586 /* 1587 * Mountroot hook: prompt the user to enter the root file system 1588 * floppy. 1589 */ 1590 void 1591 fd_mountroot_hook(dev) 1592 struct device *dev; 1593 { 1594 int c; 1595 1596 printf("Insert filesystem floppy and press return."); 1597 cnpollc(1); 1598 for (;;) { 1599 c = cngetc(); 1600 if ((c == '\r') || (c == '\n')) { 1601 printf("\n"); 1602 break; 1603 } 1604 } 1605 cnpollc(0); 1606 } 1607
Indexes created Mon Sep 29 21:09:56 GMT 2025