fd.c revision 1.47
1 /* $NetBSD: fd.c,v 1.47 2003/09/23 21:36:07 mycroft 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. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 /* 74 * Floppy formatting facilities merged from FreeBSD fd.c driver: 75 * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp 76 * which carries the same copyright/redistribution notice as shown above with 77 * the addition of the following statement before the "Redistribution and 78 * use ..." clause: 79 * 80 * Copyright (c) 1993, 1994 by 81 * jc (at) irbs.UUCP (John Capo) 82 * vak (at) zebub.msk.su (Serge Vakulenko) 83 * ache (at) astral.msk.su (Andrew A. Chernov) 84 * 85 * Copyright (c) 1993, 1994, 1995 by 86 * joerg_wunsch (at) uriah.sax.de (Joerg Wunsch) 87 * dufault (at) hda.com (Peter Dufault) 88 */ 89 90 #include <sys/cdefs.h> 91 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.47 2003/09/23 21:36:07 mycroft Exp $"); 92 93 #include "rnd.h" 94 #include "opt_ddb.h" 95 96 /* 97 * XXX This driver should be properly MI'd some day, but this allows us 98 * XXX to eliminate a lot of code duplication for now. 99 */ 100 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 101 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 102 !defined(prep) && !defined(sandpoint) && !defined(x86_64) 103 #error platform not supported by this driver, yet 104 #endif 105 106 #include <sys/param.h> 107 #include <sys/systm.h> 108 #include <sys/callout.h> 109 #include <sys/kernel.h> 110 #include <sys/file.h> 111 #include <sys/ioctl.h> 112 #include <sys/device.h> 113 #include <sys/disklabel.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 #include <sys/conf.h> 123 #if NRND > 0 124 #include <sys/rnd.h> 125 #endif 126 127 #include <uvm/uvm_extern.h> 128 129 #include <dev/cons.h> 130 131 #include <machine/cpu.h> 132 #include <machine/bus.h> 133 134 #if defined(atari) 135 /* 136 * On the atari, it is configured as fdcisa 137 */ 138 #define FDCCF_DRIVE FDCISACF_DRIVE 139 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 140 141 #define fd_cd fdisa_cd 142 #endif /* atari */ 143 144 #include <machine/intr.h> 145 146 #include <dev/isa/isavar.h> 147 #include <dev/isa/isadmavar.h> 148 149 #include <dev/isa/fdreg.h> 150 #include <dev/isa/fdcvar.h> 151 152 #if defined(i386) 153 154 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 155 #include <i386/isa/nvram.h> 156 157 #include "mca.h" 158 #if NMCA > 0 159 #include <machine/mca_machdep.h> /* for MCA_system */ 160 #endif 161 162 #endif /* i386 */ 163 164 #include <dev/isa/fdvar.h> 165 166 #define FDUNIT(dev) (minor(dev) / 8) 167 #define FDTYPE(dev) (minor(dev) % 8) 168 169 /* XXX misuse a flag to identify format operation */ 170 #define B_FORMAT B_XXX 171 172 /* controller driver configuration */ 173 int fdprint __P((void *, const char *)); 174 175 #if NMCA > 0 176 /* MCA - specific entries */ 177 const struct fd_type mca_fd_types[] = { 178 { 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 */ 179 { 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 */ 180 }; 181 #endif /* NMCA > 0 */ 182 183 /* The order of entries in the following table is important -- BEWARE! */ 184 185 #if defined(atari) 186 const struct fd_type fd_types[] = { 187 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 188 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 189 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 190 }; 191 #else 192 const struct fd_type fd_types[] = { 193 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 194 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 195 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 196 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 197 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 198 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 199 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 200 }; 201 #endif /* defined(atari) */ 202 203 int fdprobe __P((struct device *, struct cfdata *, void *)); 204 void fdattach __P((struct device *, struct device *, void *)); 205 206 extern struct cfdriver fd_cd; 207 208 #ifdef atari 209 CFATTACH_DECL(fdisa, sizeof(struct fd_softc), 210 fdprobe, fdattach, NULL, NULL); 211 #else 212 CFATTACH_DECL(fd, sizeof(struct fd_softc), 213 fdprobe, fdattach, NULL, NULL); 214 #endif 215 216 dev_type_open(fdopen); 217 dev_type_close(fdclose); 218 dev_type_read(fdread); 219 dev_type_write(fdwrite); 220 dev_type_ioctl(fdioctl); 221 dev_type_strategy(fdstrategy); 222 223 const struct bdevsw fd_bdevsw = { 224 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 225 }; 226 227 const struct cdevsw fd_cdevsw = { 228 fdopen, fdclose, fdread, fdwrite, fdioctl, 229 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 230 }; 231 232 void fdgetdisklabel __P((struct fd_softc *)); 233 int fd_get_parms __P((struct fd_softc *)); 234 void fdstart __P((struct fd_softc *)); 235 236 struct dkdriver fddkdriver = { fdstrategy }; 237 238 #if defined(i386) 239 const struct fd_type *fd_nvtotype __P((char *, int, int)); 240 #endif /* i386 */ 241 void fd_set_motor __P((struct fdc_softc *fdc, int reset)); 242 void fd_motor_off __P((void *arg)); 243 void fd_motor_on __P((void *arg)); 244 int fdcresult __P((struct fdc_softc *fdc)); 245 void fdcstart __P((struct fdc_softc *fdc)); 246 void fdcstatus __P((struct device *dv, int n, char *s)); 247 void fdctimeout __P((void *arg)); 248 void fdcpseudointr __P((void *arg)); 249 void fdcretry __P((struct fdc_softc *fdc)); 250 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 251 __inline const struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 252 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 253 254 void fd_mountroot_hook __P((struct device *)); 255 256 /* 257 * Arguments passed between fdcattach and fdprobe. 258 */ 259 struct fdc_attach_args { 260 int fa_drive; 261 const struct fd_type *fa_deftype; 262 }; 263 264 /* 265 * Print the location of a disk drive (called just before attaching the 266 * the drive). If `fdc' is not NULL, the drive was found but was not 267 * in the system config file; print the drive name as well. 268 * Return QUIET (config_find ignores this if the device was configured) to 269 * avoid printing `fdN not configured' messages. 270 */ 271 int 272 fdprint(aux, fdc) 273 void *aux; 274 const char *fdc; 275 { 276 register struct fdc_attach_args *fa = aux; 277 278 if (!fdc) 279 aprint_normal(" drive %d", fa->fa_drive); 280 return QUIET; 281 } 282 283 void 284 fdcattach(fdc) 285 struct fdc_softc *fdc; 286 { 287 struct fdc_attach_args fa; 288 bus_space_tag_t iot; 289 bus_space_handle_t ioh; 290 #if defined(i386) 291 int type; 292 #endif 293 294 iot = fdc->sc_iot; 295 ioh = fdc->sc_ioh; 296 callout_init(&fdc->sc_timo_ch); 297 callout_init(&fdc->sc_intr_ch); 298 299 fdc->sc_state = DEVIDLE; 300 TAILQ_INIT(&fdc->sc_drives); 301 302 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 303 304 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 305 printf("%s: can't reserve drq %d\n", 306 fdc->sc_dev.dv_xname, fdc->sc_drq); 307 return; 308 } 309 310 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 311 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 312 printf("%s: can't set up ISA DMA map\n", 313 fdc->sc_dev.dv_xname); 314 return; 315 } 316 317 /* 318 * Reset the controller to get it into a known state. Not all 319 * probes necessarily need do this to discover the controller up 320 * front, so don't assume anything. 321 */ 322 323 bus_space_write_1(iot, ioh, fdout, 0); 324 delay(100); 325 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 326 327 /* see if it can handle a command */ 328 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 329 printf ("%s: can't reset controller\n", fdc->sc_dev.dv_xname); 330 return; 331 } 332 out_fdc(iot, ioh, 0xdf); 333 out_fdc(iot, ioh, 2); 334 335 #if defined(i386) 336 /* 337 * The NVRAM info only tells us about the first two disks on the 338 * `primary' floppy controller. 339 */ 340 if (fdc->sc_dev.dv_unit == 0) 341 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 342 else 343 type = -1; 344 #endif /* i386 */ 345 346 /* physical limit: four drives per controller. */ 347 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 348 if (fdc->sc_known) { 349 if (fdc->sc_present & (1 << fa.fa_drive)) { 350 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 351 config_found(&fdc->sc_dev, (void *)&fa, 352 fdprint); 353 } 354 } else { 355 #if defined(i386) 356 if (type >= 0 && fa.fa_drive < 2) 357 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 358 type, fa.fa_drive); 359 else 360 fa.fa_deftype = NULL; /* unknown */ 361 #elif defined(atari) 362 /* 363 * Atari has a different ordening, defaults to 1.44 364 */ 365 fa.fa_deftype = &fd_types[2]; 366 #else 367 /* 368 * Default to 1.44MB on Alpha and BeBox. How do we tell 369 * on these platforms? 370 */ 371 fa.fa_deftype = &fd_types[0]; 372 #endif /* i386 */ 373 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 374 } 375 } 376 } 377 378 int 379 fdprobe(parent, match, aux) 380 struct device *parent; 381 struct cfdata *match; 382 void *aux; 383 { 384 struct fdc_softc *fdc = (void *)parent; 385 struct cfdata *cf = match; 386 struct fdc_attach_args *fa = aux; 387 int drive = fa->fa_drive; 388 bus_space_tag_t iot = fdc->sc_iot; 389 bus_space_handle_t ioh = fdc->sc_ioh; 390 int n; 391 392 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 393 cf->cf_loc[FDCCF_DRIVE] != drive) 394 return 0; 395 /* 396 * XXX 397 * This is to work around some odd interactions between this driver 398 * and SMC Ethernet cards. 399 */ 400 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 401 return 0; 402 403 /* Use PNP information if available */ 404 if (fdc->sc_known) 405 return 1; 406 407 /* select drive and turn on motor */ 408 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 409 /* wait for motor to spin up */ 410 delay(250000); 411 out_fdc(iot, ioh, NE7CMD_RECAL); 412 out_fdc(iot, ioh, drive); 413 /* wait for recalibrate, up to 2s */ 414 for (n = 20000; n; n--) { 415 delay(100); 416 if ((bus_space_read_1(iot, ioh, fdsts) & FDS_DRVBUSY(drive)) == 0) 417 break; 418 } 419 out_fdc(iot, ioh, NE7CMD_SENSEI); 420 n = fdcresult(fdc); 421 #ifdef FD_DEBUG 422 { 423 int i; 424 printf("fdprobe: status"); 425 for (i = 0; i < n; i++) 426 printf(" %x", fdc->sc_status[i]); 427 printf("\n"); 428 } 429 #endif 430 /* turn off motor */ 431 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 432 433 #if defined(bebox) /* XXX What is this about? --thorpej (at) netbsd.org */ 434 if (n != 2 || (fdc->sc_status[1] != 0)) 435 return 0; 436 #else 437 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 438 return 0; 439 #endif /* bebox */ 440 441 return 1; 442 } 443 444 /* 445 * Controller is working, and drive responded. Attach it. 446 */ 447 void 448 fdattach(parent, self, aux) 449 struct device *parent, *self; 450 void *aux; 451 { 452 struct fdc_softc *fdc = (void *)parent; 453 struct fd_softc *fd = (void *)self; 454 struct fdc_attach_args *fa = aux; 455 const struct fd_type *type = fa->fa_deftype; 456 int drive = fa->fa_drive; 457 458 callout_init(&fd->sc_motoron_ch); 459 callout_init(&fd->sc_motoroff_ch); 460 461 /* XXX Allow `flags' to override device type? */ 462 463 if (type) 464 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 465 type->cyls, type->heads, type->sectrac); 466 else 467 printf(": density unknown\n"); 468 469 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 470 fd->sc_cylin = -1; 471 fd->sc_drive = drive; 472 fd->sc_deftype = type; 473 fdc->sc_fd[drive] = fd; 474 475 /* 476 * Initialize and attach the disk structure. 477 */ 478 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 479 fd->sc_dk.dk_driver = &fddkdriver; 480 disk_attach(&fd->sc_dk); 481 482 /* 483 * Establish a mountroot hook. 484 */ 485 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 486 487 /* Needed to power off if the motor is on when we halt. */ 488 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 489 490 #if NRND > 0 491 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 492 RND_TYPE_DISK, 0); 493 #endif 494 } 495 496 #if defined(i386) 497 /* 498 * Translate nvram type into internal data structure. Return NULL for 499 * none/unknown/unusable. 500 */ 501 const struct fd_type * 502 fd_nvtotype(fdc, nvraminfo, drive) 503 char *fdc; 504 int nvraminfo, drive; 505 { 506 int type; 507 508 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 509 switch (type) { 510 case NVRAM_DISKETTE_NONE: 511 return NULL; 512 case NVRAM_DISKETTE_12M: 513 return &fd_types[1]; 514 case NVRAM_DISKETTE_TYPE5: 515 case NVRAM_DISKETTE_TYPE6: 516 /* XXX We really ought to handle 2.88MB format. */ 517 case NVRAM_DISKETTE_144M: 518 #if NMCA > 0 519 if (MCA_system) 520 return &mca_fd_types[0]; 521 else 522 #endif /* NMCA > 0 */ 523 return &fd_types[0]; 524 case NVRAM_DISKETTE_360K: 525 return &fd_types[3]; 526 case NVRAM_DISKETTE_720K: 527 #if NMCA > 0 528 if (MCA_system) 529 return &mca_fd_types[1]; 530 else 531 #endif /* NMCA > 0 */ 532 return &fd_types[4]; 533 default: 534 printf("%s: drive %d: unknown device type 0x%x\n", 535 fdc, drive, type); 536 return NULL; 537 } 538 } 539 #endif /* i386 */ 540 541 __inline const struct fd_type * 542 fd_dev_to_type(fd, dev) 543 struct fd_softc *fd; 544 dev_t dev; 545 { 546 u_int type = FDTYPE(dev); 547 548 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 549 return NULL; 550 return type ? &fd_types[type - 1] : fd->sc_deftype; 551 } 552 553 void 554 fdstrategy(bp) 555 register struct buf *bp; /* IO operation to perform */ 556 { 557 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 558 int sz; 559 int s; 560 561 /* Valid unit, controller, and request? */ 562 if (bp->b_blkno < 0 || 563 ((bp->b_bcount % FDC_BSIZE) != 0 && 564 (bp->b_flags & B_FORMAT) == 0)) { 565 bp->b_error = EINVAL; 566 goto bad; 567 } 568 569 /* If it's a null transfer, return immediately. */ 570 if (bp->b_bcount == 0) 571 goto done; 572 573 sz = howmany(bp->b_bcount, FDC_BSIZE); 574 575 if (bp->b_blkno + sz > fd->sc_type->size) { 576 sz = fd->sc_type->size - bp->b_blkno; 577 if (sz == 0) { 578 /* If exactly at end of disk, return EOF. */ 579 goto done; 580 } 581 if (sz < 0) { 582 /* If past end of disk, return EINVAL. */ 583 bp->b_error = EINVAL; 584 goto bad; 585 } 586 /* Otherwise, truncate request. */ 587 bp->b_bcount = sz << DEV_BSHIFT; 588 } 589 590 bp->b_rawblkno = bp->b_blkno; 591 bp->b_cylinder = 592 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 593 594 #ifdef FD_DEBUG 595 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld sz %d\n", 596 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 597 #endif 598 599 /* Queue transfer on drive, activate drive and controller if idle. */ 600 s = splbio(); 601 BUFQ_PUT(&fd->sc_q, bp); 602 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 603 if (fd->sc_active == 0) 604 fdstart(fd); 605 #ifdef DIAGNOSTIC 606 else { 607 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 608 if (fdc->sc_state == DEVIDLE) { 609 printf("fdstrategy: controller inactive\n"); 610 fdcstart(fdc); 611 } 612 } 613 #endif 614 splx(s); 615 return; 616 617 bad: 618 bp->b_flags |= B_ERROR; 619 done: 620 /* Toss transfer; we're done early. */ 621 bp->b_resid = bp->b_bcount; 622 biodone(bp); 623 } 624 625 void 626 fdstart(fd) 627 struct fd_softc *fd; 628 { 629 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 630 int active = !TAILQ_EMPTY(&fdc->sc_drives); 631 632 /* Link into controller queue. */ 633 fd->sc_active = 1; 634 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 635 636 /* If controller not already active, start it. */ 637 if (!active) 638 fdcstart(fdc); 639 } 640 641 void 642 fdfinish(fd, bp) 643 struct fd_softc *fd; 644 struct buf *bp; 645 { 646 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 647 648 /* 649 * Move this drive to the end of the queue to give others a `fair' 650 * chance. We only force a switch if N operations are completed while 651 * another drive is waiting to be serviced, since there is a long motor 652 * startup delay whenever we switch. 653 */ 654 (void)BUFQ_GET(&fd->sc_q); 655 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 656 fd->sc_ops = 0; 657 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 658 if (BUFQ_PEEK(&fd->sc_q) != NULL) 659 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 660 else 661 fd->sc_active = 0; 662 } 663 bp->b_resid = fd->sc_bcount; 664 fd->sc_skip = 0; 665 666 #if NRND > 0 667 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 668 #endif 669 670 biodone(bp); 671 /* turn off motor 5s from now */ 672 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 673 fdc->sc_state = DEVIDLE; 674 } 675 676 int 677 fdread(dev, uio, flags) 678 dev_t dev; 679 struct uio *uio; 680 int flags; 681 { 682 683 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 684 } 685 686 int 687 fdwrite(dev, uio, flags) 688 dev_t dev; 689 struct uio *uio; 690 int flags; 691 { 692 693 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 694 } 695 696 void 697 fd_set_motor(fdc, reset) 698 struct fdc_softc *fdc; 699 int reset; 700 { 701 struct fd_softc *fd; 702 u_char status; 703 int n; 704 705 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 706 status = fd->sc_drive; 707 else 708 status = 0; 709 if (!reset) 710 status |= FDO_FRST | FDO_FDMAEN; 711 for (n = 0; n < 4; n++) 712 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 713 status |= FDO_MOEN(n); 714 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 715 } 716 717 void 718 fd_motor_off(arg) 719 void *arg; 720 { 721 struct fd_softc *fd = arg; 722 int s; 723 724 s = splbio(); 725 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 726 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 727 splx(s); 728 } 729 730 void 731 fd_motor_on(arg) 732 void *arg; 733 { 734 struct fd_softc *fd = arg; 735 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 736 int s; 737 738 s = splbio(); 739 fd->sc_flags &= ~FD_MOTOR_WAIT; 740 if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT)) 741 (void) fdcintr(fdc); 742 splx(s); 743 } 744 745 int 746 fdcresult(fdc) 747 struct fdc_softc *fdc; 748 { 749 bus_space_tag_t iot = fdc->sc_iot; 750 bus_space_handle_t ioh = fdc->sc_ioh; 751 u_char i; 752 u_int j = 100000, 753 n = 0; 754 755 for (; j; j--) { 756 i = bus_space_read_1(iot, ioh, fdsts) & 757 (NE7_DIO | NE7_RQM | NE7_CB); 758 if (i == NE7_RQM) 759 return n; 760 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 761 if (n >= sizeof(fdc->sc_status)) { 762 log(LOG_ERR, "fdcresult: overrun\n"); 763 return -1; 764 } 765 fdc->sc_status[n++] = 766 bus_space_read_1(iot, ioh, fddata); 767 } 768 delay(10); 769 } 770 log(LOG_ERR, "fdcresult: timeout\n"); 771 return -1; 772 } 773 774 int 775 out_fdc(iot, ioh, x) 776 bus_space_tag_t iot; 777 bus_space_handle_t ioh; 778 u_char x; 779 { 780 u_char i; 781 u_int j = 100000; 782 783 for (; j; j--) { 784 i = bus_space_read_1(iot, ioh, fdsts) & 785 (NE7_DIO | NE7_RQM); 786 if (i == NE7_RQM) { 787 bus_space_write_1(iot, ioh, fddata, x); 788 return 0; 789 } 790 delay(10); 791 } 792 return -1; 793 } 794 795 int 796 fdopen(dev, flags, mode, p) 797 dev_t dev; 798 int flags; 799 int mode; 800 struct proc *p; 801 { 802 struct fd_softc *fd; 803 const struct fd_type *type; 804 805 fd = device_lookup(&fd_cd, FDUNIT(dev)); 806 if (fd == NULL) 807 return (ENXIO); 808 809 type = fd_dev_to_type(fd, dev); 810 if (type == NULL) 811 return ENXIO; 812 813 if ((fd->sc_flags & FD_OPEN) != 0 && 814 memcmp(fd->sc_type, type, sizeof(*type))) 815 return EBUSY; 816 817 fd->sc_type_copy = *type; 818 fd->sc_type = &fd->sc_type_copy; 819 fd->sc_cylin = -1; 820 fd->sc_flags |= FD_OPEN; 821 822 return 0; 823 } 824 825 int 826 fdclose(dev, flags, mode, p) 827 dev_t dev; 828 int flags; 829 int mode; 830 struct proc *p; 831 { 832 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 833 834 fd->sc_flags &= ~FD_OPEN; 835 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 836 return 0; 837 } 838 839 void 840 fdcstart(fdc) 841 struct fdc_softc *fdc; 842 { 843 844 #ifdef DIAGNOSTIC 845 /* only got here if controller's drive queue was inactive; should 846 be in idle state */ 847 if (fdc->sc_state != DEVIDLE) { 848 printf("fdcstart: not idle\n"); 849 return; 850 } 851 #endif 852 (void) fdcintr(fdc); 853 } 854 855 void 856 fdcstatus(dv, n, s) 857 struct device *dv; 858 int n; 859 char *s; 860 { 861 struct fdc_softc *fdc = (void *)dv->dv_parent; 862 char bits[64]; 863 864 if (n == 0) { 865 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 866 (void) fdcresult(fdc); 867 n = 2; 868 } 869 870 printf("%s: %s", dv->dv_xname, s); 871 872 switch (n) { 873 case 0: 874 printf("\n"); 875 break; 876 case 2: 877 printf(" (st0 %s cyl %d)\n", 878 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 879 bits, sizeof(bits)), fdc->sc_status[1]); 880 break; 881 case 7: 882 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 883 NE7_ST0BITS, bits, sizeof(bits))); 884 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 885 NE7_ST1BITS, bits, sizeof(bits))); 886 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 887 NE7_ST2BITS, bits, sizeof(bits))); 888 printf(" cyl %d head %d sec %d)\n", 889 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 890 break; 891 #ifdef DIAGNOSTIC 892 default: 893 printf("\nfdcstatus: weird size"); 894 break; 895 #endif 896 } 897 } 898 899 void 900 fdctimeout(arg) 901 void *arg; 902 { 903 struct fdc_softc *fdc = arg; 904 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 905 int s; 906 907 s = splbio(); 908 #ifdef DEBUG 909 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 910 #endif 911 fdcstatus(&fd->sc_dev, 0, "timeout"); 912 913 if (BUFQ_PEEK(&fd->sc_q) != NULL) 914 fdc->sc_state++; 915 else 916 fdc->sc_state = DEVIDLE; 917 918 (void) fdcintr(fdc); 919 splx(s); 920 } 921 922 void 923 fdcpseudointr(arg) 924 void *arg; 925 { 926 int s; 927 928 /* Just ensure it has the right spl. */ 929 s = splbio(); 930 (void) fdcintr(arg); 931 splx(s); 932 } 933 934 int 935 fdcintr(arg) 936 void *arg; 937 { 938 struct fdc_softc *fdc = arg; 939 #define st0 fdc->sc_status[0] 940 #define cyl fdc->sc_status[1] 941 struct fd_softc *fd; 942 struct buf *bp; 943 bus_space_tag_t iot = fdc->sc_iot; 944 bus_space_handle_t ioh = fdc->sc_ioh; 945 int read, head, sec, i, nblks; 946 struct fd_type *type; 947 struct ne7_fd_formb *finfo = NULL; 948 949 loop: 950 /* Is there a drive for the controller to do a transfer with? */ 951 fd = TAILQ_FIRST(&fdc->sc_drives); 952 if (fd == NULL) { 953 fdc->sc_state = DEVIDLE; 954 return 1; 955 } 956 957 /* Is there a transfer to this drive? If not, deactivate drive. */ 958 bp = BUFQ_PEEK(&fd->sc_q); 959 if (bp == NULL) { 960 fd->sc_ops = 0; 961 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 962 fd->sc_active = 0; 963 goto loop; 964 } 965 966 if (bp->b_flags & B_FORMAT) 967 finfo = (struct ne7_fd_formb *)bp->b_data; 968 969 switch (fdc->sc_state) { 970 case DEVIDLE: 971 fdc->sc_errors = 0; 972 fd->sc_skip = 0; 973 fd->sc_bcount = bp->b_bcount; 974 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 975 callout_stop(&fd->sc_motoroff_ch); 976 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 977 fdc->sc_state = MOTORWAIT; 978 return 1; 979 } 980 if ((fd->sc_flags & FD_MOTOR) == 0) { 981 /* Turn on the motor, being careful about pairing. */ 982 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 983 if (ofd && ofd->sc_flags & FD_MOTOR) { 984 callout_stop(&ofd->sc_motoroff_ch); 985 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 986 } 987 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 988 fd_set_motor(fdc, 0); 989 fdc->sc_state = MOTORWAIT; 990 /* Allow .25s for motor to stabilize. */ 991 callout_reset(&fd->sc_motoron_ch, hz / 4, 992 fd_motor_on, fd); 993 return 1; 994 } 995 /* Make sure the right drive is selected. */ 996 fd_set_motor(fdc, 0); 997 998 /* fall through */ 999 case DOSEEK: 1000 doseek: 1001 if (fd->sc_cylin == bp->b_cylinder) 1002 goto doio; 1003 1004 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1005 out_fdc(iot, ioh, fd->sc_type->steprate); 1006 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1007 1008 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1009 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1010 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1011 1012 fd->sc_cylin = -1; 1013 fdc->sc_state = SEEKWAIT; 1014 1015 fd->sc_dk.dk_seek++; 1016 disk_busy(&fd->sc_dk); 1017 1018 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1019 return 1; 1020 1021 case DOIO: 1022 doio: 1023 type = fd->sc_type; 1024 if (finfo) 1025 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1026 (char *)finfo; 1027 sec = fd->sc_blkno % type->seccyl; 1028 nblks = type->seccyl - sec; 1029 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1030 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1031 fd->sc_nblks = nblks; 1032 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1033 head = sec / type->sectrac; 1034 sec -= head * type->sectrac; 1035 #ifdef DIAGNOSTIC 1036 { 1037 int block; 1038 block = (fd->sc_cylin * type->heads + head) 1039 * type->sectrac + sec; 1040 if (block != fd->sc_blkno) { 1041 printf("fdcintr: block %d != blkno " 1042 "%" PRId64 "\n", block, fd->sc_blkno); 1043 #ifdef DDB 1044 Debugger(); 1045 #endif 1046 } 1047 } 1048 #endif 1049 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1050 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1051 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1052 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1053 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1054 #ifdef FD_DEBUG 1055 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1056 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1057 head, sec, nblks); 1058 #endif 1059 if (finfo) { 1060 /* formatting */ 1061 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1062 fdc->sc_errors = 4; 1063 fdcretry(fdc); 1064 goto loop; 1065 } 1066 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1067 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1068 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1069 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1070 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1071 } else { 1072 if (read) 1073 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1074 else 1075 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1076 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1077 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1078 out_fdc(iot, ioh, head); 1079 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1080 out_fdc(iot, ioh, type->secsize);/* sector size */ 1081 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1082 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1083 out_fdc(iot, ioh, type->datalen);/* data length */ 1084 } 1085 fdc->sc_state = IOCOMPLETE; 1086 1087 disk_busy(&fd->sc_dk); 1088 1089 /* allow 2 seconds for operation */ 1090 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1091 return 1; /* will return later */ 1092 1093 case SEEKWAIT: 1094 callout_stop(&fdc->sc_timo_ch); 1095 fdc->sc_state = SEEKCOMPLETE; 1096 /* allow 1/50 second for heads to settle */ 1097 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1098 return 1; 1099 1100 case SEEKCOMPLETE: 1101 /* no data on seek */ 1102 disk_unbusy(&fd->sc_dk, 0, 0); 1103 1104 /* Make sure seek really happened. */ 1105 out_fdc(iot, ioh, NE7CMD_SENSEI); 1106 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1107 cyl != bp->b_cylinder * fd->sc_type->step) { 1108 #ifdef FD_DEBUG 1109 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1110 #endif 1111 fdcretry(fdc); 1112 goto loop; 1113 } 1114 fd->sc_cylin = bp->b_cylinder; 1115 goto doio; 1116 1117 case IOTIMEDOUT: 1118 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1119 case SEEKTIMEDOUT: 1120 case RECALTIMEDOUT: 1121 case RESETTIMEDOUT: 1122 fdcretry(fdc); 1123 goto loop; 1124 1125 case IOCOMPLETE: /* IO DONE, post-analyze */ 1126 callout_stop(&fdc->sc_timo_ch); 1127 1128 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1129 (bp->b_flags & B_READ)); 1130 1131 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1132 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1133 #ifdef FD_DEBUG 1134 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1135 "read failed" : "write failed"); 1136 printf("blkno %d nblks %d\n", 1137 fd->sc_blkno, fd->sc_nblks); 1138 #endif 1139 fdcretry(fdc); 1140 goto loop; 1141 } 1142 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1143 if (fdc->sc_errors) { 1144 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1145 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1146 printf("\n"); 1147 fdc->sc_errors = 0; 1148 } 1149 fd->sc_blkno += fd->sc_nblks; 1150 fd->sc_skip += fd->sc_nbytes; 1151 fd->sc_bcount -= fd->sc_nbytes; 1152 if (!finfo && fd->sc_bcount > 0) { 1153 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1154 goto doseek; 1155 } 1156 fdfinish(fd, bp); 1157 goto loop; 1158 1159 case DORESET: 1160 /* try a reset, keep motor on */ 1161 fd_set_motor(fdc, 1); 1162 delay(100); 1163 fd_set_motor(fdc, 0); 1164 fdc->sc_state = RESETCOMPLETE; 1165 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1166 return 1; /* will return later */ 1167 1168 case RESETCOMPLETE: 1169 callout_stop(&fdc->sc_timo_ch); 1170 /* clear the controller output buffer */ 1171 for (i = 0; i < 4; i++) { 1172 out_fdc(iot, ioh, NE7CMD_SENSEI); 1173 (void) fdcresult(fdc); 1174 } 1175 1176 /* fall through */ 1177 case DORECAL: 1178 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1179 out_fdc(iot, ioh, fd->sc_drive); 1180 fdc->sc_state = RECALWAIT; 1181 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1182 return 1; /* will return later */ 1183 1184 case RECALWAIT: 1185 callout_stop(&fdc->sc_timo_ch); 1186 fdc->sc_state = RECALCOMPLETE; 1187 /* allow 1/30 second for heads to settle */ 1188 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1189 return 1; /* will return later */ 1190 1191 case RECALCOMPLETE: 1192 out_fdc(iot, ioh, NE7CMD_SENSEI); 1193 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1194 #ifdef FD_DEBUG 1195 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1196 #endif 1197 fdcretry(fdc); 1198 goto loop; 1199 } 1200 fd->sc_cylin = 0; 1201 goto doseek; 1202 1203 case MOTORWAIT: 1204 if (fd->sc_flags & FD_MOTOR_WAIT) 1205 return 1; /* time's not up yet */ 1206 goto doseek; 1207 1208 default: 1209 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1210 return 1; 1211 } 1212 #ifdef DIAGNOSTIC 1213 panic("fdcintr: impossible"); 1214 #endif 1215 #undef st0 1216 #undef cyl 1217 } 1218 1219 void 1220 fdcretry(fdc) 1221 struct fdc_softc *fdc; 1222 { 1223 char bits[64]; 1224 struct fd_softc *fd; 1225 struct buf *bp; 1226 1227 fd = TAILQ_FIRST(&fdc->sc_drives); 1228 bp = BUFQ_PEEK(&fd->sc_q); 1229 1230 if (fd->sc_opts & FDOPT_NORETRY) 1231 goto fail; 1232 switch (fdc->sc_errors) { 1233 case 0: 1234 /* try again */ 1235 fdc->sc_state = DOSEEK; 1236 break; 1237 1238 case 1: case 2: case 3: 1239 /* didn't work; try recalibrating */ 1240 fdc->sc_state = DORECAL; 1241 break; 1242 1243 case 4: 1244 /* still no go; reset the bastard */ 1245 fdc->sc_state = DORESET; 1246 break; 1247 1248 default: 1249 fail: 1250 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1251 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1252 fd->sc_skip / FDC_BSIZE, 1253 (struct disklabel *)NULL); 1254 1255 printf(" (st0 %s", 1256 bitmask_snprintf(fdc->sc_status[0], 1257 NE7_ST0BITS, bits, 1258 sizeof(bits))); 1259 printf(" st1 %s", 1260 bitmask_snprintf(fdc->sc_status[1], 1261 NE7_ST1BITS, bits, 1262 sizeof(bits))); 1263 printf(" st2 %s", 1264 bitmask_snprintf(fdc->sc_status[2], 1265 NE7_ST2BITS, bits, 1266 sizeof(bits))); 1267 printf(" cyl %d head %d sec %d)\n", 1268 fdc->sc_status[3], 1269 fdc->sc_status[4], 1270 fdc->sc_status[5]); 1271 } 1272 1273 bp->b_flags |= B_ERROR; 1274 bp->b_error = EIO; 1275 fdfinish(fd, bp); 1276 } 1277 fdc->sc_errors++; 1278 } 1279 1280 int 1281 fdioctl(dev, cmd, addr, flag, p) 1282 dev_t dev; 1283 u_long cmd; 1284 caddr_t addr; 1285 int flag; 1286 struct proc *p; 1287 { 1288 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1289 struct fdformat_parms *form_parms; 1290 struct fdformat_cmd *form_cmd; 1291 struct ne7_fd_formb *fd_formb; 1292 struct disklabel buffer; 1293 int error; 1294 unsigned int scratch; 1295 int il[FD_MAX_NSEC + 1]; 1296 register int i, j; 1297 #ifdef __HAVE_OLD_DISKLABEL 1298 struct disklabel newlabel; 1299 #endif 1300 1301 switch (cmd) { 1302 case DIOCGDINFO: 1303 #ifdef __HAVE_OLD_DISKLABEL 1304 case ODIOCGDINFO: 1305 #endif 1306 memset(&buffer, 0, sizeof(buffer)); 1307 1308 buffer.d_secpercyl = fd->sc_type->seccyl; 1309 buffer.d_type = DTYPE_FLOPPY; 1310 buffer.d_secsize = FDC_BSIZE; 1311 1312 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1313 return EINVAL; 1314 1315 #ifdef __HAVE_OLD_DISKLABEL 1316 if (cmd == ODIOCGDINFO) { 1317 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1318 return ENOTTY; 1319 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1320 } else 1321 #endif 1322 *(struct disklabel *)addr = buffer; 1323 return 0; 1324 1325 case DIOCWLABEL: 1326 if ((flag & FWRITE) == 0) 1327 return EBADF; 1328 /* XXX do something */ 1329 return 0; 1330 1331 case DIOCWDINFO: 1332 #ifdef __HAVE_OLD_DISKLABEL 1333 case ODIOCWDINFO: 1334 #endif 1335 { 1336 struct disklabel *lp; 1337 1338 if ((flag & FWRITE) == 0) 1339 return EBADF; 1340 #ifdef __HAVE_OLD_DISKLABEL 1341 if (cmd == ODIOCWDINFO) { 1342 memset(&newlabel, 0, sizeof newlabel); 1343 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1344 lp = &newlabel; 1345 } else 1346 #endif 1347 lp = (struct disklabel *)addr; 1348 1349 error = setdisklabel(&buffer, lp, 0, NULL); 1350 if (error) 1351 return error; 1352 1353 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1354 return error; 1355 } 1356 1357 case FDIOCGETFORMAT: 1358 form_parms = (struct fdformat_parms *)addr; 1359 form_parms->fdformat_version = FDFORMAT_VERSION; 1360 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1361 form_parms->ncyl = fd->sc_type->cyls; 1362 form_parms->nspt = fd->sc_type->sectrac; 1363 form_parms->ntrk = fd->sc_type->heads; 1364 form_parms->stepspercyl = fd->sc_type->step; 1365 form_parms->gaplen = fd->sc_type->gap2; 1366 form_parms->fillbyte = fd->sc_type->fillbyte; 1367 form_parms->interleave = fd->sc_type->interleave; 1368 switch (fd->sc_type->rate) { 1369 case FDC_500KBPS: 1370 form_parms->xfer_rate = 500 * 1024; 1371 break; 1372 case FDC_300KBPS: 1373 form_parms->xfer_rate = 300 * 1024; 1374 break; 1375 case FDC_250KBPS: 1376 form_parms->xfer_rate = 250 * 1024; 1377 break; 1378 default: 1379 return EINVAL; 1380 } 1381 return 0; 1382 1383 case FDIOCSETFORMAT: 1384 if((flag & FWRITE) == 0) 1385 return EBADF; /* must be opened for writing */ 1386 form_parms = (struct fdformat_parms *)addr; 1387 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1388 return EINVAL; /* wrong version of formatting prog */ 1389 1390 scratch = form_parms->nbps >> 7; 1391 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1392 scratch & ~(1 << (ffs(scratch)-1))) 1393 /* not a power-of-two multiple of 128 */ 1394 return EINVAL; 1395 1396 switch (form_parms->xfer_rate) { 1397 case 500 * 1024: 1398 fd->sc_type->rate = FDC_500KBPS; 1399 break; 1400 case 300 * 1024: 1401 fd->sc_type->rate = FDC_300KBPS; 1402 break; 1403 case 250 * 1024: 1404 fd->sc_type->rate = FDC_250KBPS; 1405 break; 1406 default: 1407 return EINVAL; 1408 } 1409 1410 if (form_parms->nspt > FD_MAX_NSEC || 1411 form_parms->fillbyte > 0xff || 1412 form_parms->interleave > 0xff) 1413 return EINVAL; 1414 fd->sc_type->sectrac = form_parms->nspt; 1415 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1416 return EINVAL; 1417 fd->sc_type->heads = form_parms->ntrk; 1418 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1419 fd->sc_type->secsize = ffs(scratch)-1; 1420 fd->sc_type->gap2 = form_parms->gaplen; 1421 fd->sc_type->cyls = form_parms->ncyl; 1422 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1423 form_parms->nbps / DEV_BSIZE; 1424 fd->sc_type->step = form_parms->stepspercyl; 1425 fd->sc_type->fillbyte = form_parms->fillbyte; 1426 fd->sc_type->interleave = form_parms->interleave; 1427 return 0; 1428 1429 case FDIOCFORMAT_TRACK: 1430 if((flag & FWRITE) == 0) 1431 return EBADF; /* must be opened for writing */ 1432 form_cmd = (struct fdformat_cmd *)addr; 1433 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1434 return EINVAL; /* wrong version of formatting prog */ 1435 1436 if (form_cmd->head >= fd->sc_type->heads || 1437 form_cmd->cylinder >= fd->sc_type->cyls) { 1438 return EINVAL; 1439 } 1440 1441 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1442 M_TEMP, M_NOWAIT); 1443 if (fd_formb == 0) 1444 return ENOMEM; 1445 1446 fd_formb->head = form_cmd->head; 1447 fd_formb->cyl = form_cmd->cylinder; 1448 fd_formb->transfer_rate = fd->sc_type->rate; 1449 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1450 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1451 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1452 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1453 1454 memset(il, 0, sizeof il); 1455 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1456 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1457 j++; 1458 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1459 j += fd->sc_type->interleave; 1460 } 1461 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1462 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1463 fd_formb->fd_formb_headno(i) = form_cmd->head; 1464 fd_formb->fd_formb_secno(i) = il[i+1]; 1465 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1466 } 1467 1468 error = fdformat(dev, fd_formb, p); 1469 free(fd_formb, M_TEMP); 1470 return error; 1471 1472 case FDIOCGETOPTS: /* get drive options */ 1473 *(int *)addr = fd->sc_opts; 1474 return 0; 1475 1476 case FDIOCSETOPTS: /* set drive options */ 1477 fd->sc_opts = *(int *)addr; 1478 return 0; 1479 1480 default: 1481 return ENOTTY; 1482 } 1483 1484 #ifdef DIAGNOSTIC 1485 panic("fdioctl: impossible"); 1486 #endif 1487 } 1488 1489 int 1490 fdformat(dev, finfo, p) 1491 dev_t dev; 1492 struct ne7_fd_formb *finfo; 1493 struct proc *p; 1494 { 1495 int rv = 0, s; 1496 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1497 struct fd_type *type = fd->sc_type; 1498 struct buf *bp; 1499 1500 /* set up a buffer header for fdstrategy() */ 1501 s = splbio(); 1502 bp = (struct buf *)pool_get(&bufpool, PR_NOWAIT); 1503 splx(s); 1504 if (bp == NULL) 1505 return ENOBUFS; 1506 1507 memset((void *)bp, 0, sizeof(struct buf)); 1508 BUF_INIT(bp); 1509 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1510 bp->b_proc = p; 1511 bp->b_dev = dev; 1512 1513 /* 1514 * calculate a fake blkno, so fdstrategy() would initiate a 1515 * seek to the requested cylinder 1516 */ 1517 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1518 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1519 1520 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1521 bp->b_data = (caddr_t)finfo; 1522 1523 #ifdef DEBUG 1524 printf("fdformat: blkno %" PRIx64 " count %lx\n", 1525 bp->b_blkno, bp->b_bcount); 1526 #endif 1527 1528 /* now do the format */ 1529 fdstrategy(bp); 1530 1531 /* ...and wait for it to complete */ 1532 rv = biowait(bp); 1533 s = splbio(); 1534 pool_put(&bufpool, bp); 1535 splx(s); 1536 return rv; 1537 } 1538 1539 /* 1540 * Mountroot hook: prompt the user to enter the root file system 1541 * floppy. 1542 */ 1543 void 1544 fd_mountroot_hook(dev) 1545 struct device *dev; 1546 { 1547 int c; 1548 1549 printf("Insert filesystem floppy and press return."); 1550 cnpollc(1); 1551 for (;;) { 1552 c = cngetc(); 1553 if ((c == '\r') || (c == '\n')) { 1554 printf("\n"); 1555 break; 1556 } 1557 } 1558 cnpollc(0); 1559 } 1560
Indexes created Sun Sep 28 16:09:52 GMT 2025