fd.c revision 1.63
1 /* $NetBSD: fd.c,v 1.63 2006/01/04 10:13:05 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 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 1.63 2006/01/04 10:13:05 yamt 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/bufq.h> 117 #include <sys/malloc.h> 118 #include <sys/uio.h> 119 #include <sys/syslog.h> 120 #include <sys/queue.h> 121 #include <sys/proc.h> 122 #include <sys/fdio.h> 123 #include <sys/conf.h> 124 #if NRND > 0 125 #include <sys/rnd.h> 126 #endif 127 128 #include <uvm/uvm_extern.h> 129 130 #include <dev/cons.h> 131 132 #include <machine/cpu.h> 133 #include <machine/bus.h> 134 135 #include "locators.h" 136 137 #if defined(atari) 138 /* 139 * On the atari, it is configured as fdcisa 140 */ 141 #define FDCCF_DRIVE FDCISACF_DRIVE 142 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 143 144 #define fd_cd fdisa_cd 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 #include <dev/isa/fdvar.h> 168 169 #define FDUNIT(dev) (minor(dev) / 8) 170 #define FDTYPE(dev) (minor(dev) % 8) 171 172 /* XXX misuse a flag to identify format operation */ 173 #define B_FORMAT B_XXX 174 175 /* controller driver configuration */ 176 int fdprint(void *, const char *); 177 178 #if NMCA > 0 179 /* MCA - specific entries */ 180 const struct fd_type mca_fd_types[] = { 181 { 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 */ 182 { 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 */ 183 }; 184 #endif /* NMCA > 0 */ 185 186 /* The order of entries in the following table is important -- BEWARE! */ 187 188 #if defined(atari) 189 const struct fd_type fd_types[] = { 190 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 191 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 192 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 193 }; 194 #else 195 const struct fd_type fd_types[] = { 196 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 197 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 198 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 199 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 200 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 201 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 202 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 203 }; 204 #endif /* defined(atari) */ 205 206 void fdcfinishattach(struct device *); 207 int fdprobe(struct device *, struct cfdata *, void *); 208 void fdattach(struct device *, struct device *, void *); 209 210 extern struct cfdriver fd_cd; 211 212 #ifdef atari 213 CFATTACH_DECL(fdisa, sizeof(struct fd_softc), 214 fdprobe, fdattach, NULL, NULL); 215 #else 216 CFATTACH_DECL(fd, sizeof(struct fd_softc), 217 fdprobe, fdattach, NULL, NULL); 218 #endif 219 220 dev_type_open(fdopen); 221 dev_type_close(fdclose); 222 dev_type_read(fdread); 223 dev_type_write(fdwrite); 224 dev_type_ioctl(fdioctl); 225 dev_type_strategy(fdstrategy); 226 227 const struct bdevsw fd_bdevsw = { 228 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 229 }; 230 231 const struct cdevsw fd_cdevsw = { 232 fdopen, fdclose, fdread, fdwrite, fdioctl, 233 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 234 }; 235 236 void fdgetdisklabel(struct fd_softc *); 237 int fd_get_parms(struct fd_softc *); 238 void fdstart(struct fd_softc *); 239 240 struct dkdriver fddkdriver = { fdstrategy }; 241 242 #if defined(i386) 243 const struct fd_type *fd_nvtotype(char *, int, int); 244 #endif /* i386 */ 245 void fd_set_motor(struct fdc_softc *fdc, int reset); 246 void fd_motor_off(void *arg); 247 void fd_motor_on(void *arg); 248 int fdcresult(struct fdc_softc *fdc); 249 void fdcstart(struct fdc_softc *fdc); 250 void fdcstatus(struct device *dv, int n, const char *s); 251 void fdctimeout(void *arg); 252 void fdcpseudointr(void *arg); 253 void fdcretry(struct fdc_softc *fdc); 254 void fdfinish(struct fd_softc *fd, struct buf *bp); 255 inline const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 256 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 257 258 void fd_mountroot_hook(struct device *); 259 260 /* 261 * Arguments passed between fdcattach and fdprobe. 262 */ 263 struct fdc_attach_args { 264 int fa_drive; 265 const struct fd_type *fa_deftype; 266 }; 267 268 /* 269 * Print the location of a disk drive (called just before attaching the 270 * the drive). If `fdc' is not NULL, the drive was found but was not 271 * in the system config file; print the drive name as well. 272 * Return QUIET (config_find ignores this if the device was configured) to 273 * avoid printing `fdN not configured' messages. 274 */ 275 int 276 fdprint(aux, fdc) 277 void *aux; 278 const char *fdc; 279 { 280 register struct fdc_attach_args *fa = aux; 281 282 if (!fdc) 283 aprint_normal(" drive %d", fa->fa_drive); 284 return QUIET; 285 } 286 287 void 288 fdcattach(fdc) 289 struct fdc_softc *fdc; 290 { 291 callout_init(&fdc->sc_timo_ch); 292 callout_init(&fdc->sc_intr_ch); 293 294 fdc->sc_state = DEVIDLE; 295 TAILQ_INIT(&fdc->sc_drives); 296 297 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 298 299 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 300 printf("%s: can't reserve drq %d\n", 301 fdc->sc_dev.dv_xname, fdc->sc_drq); 302 return; 303 } 304 305 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 306 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 307 printf("%s: can't set up ISA DMA map\n", 308 fdc->sc_dev.dv_xname); 309 return; 310 } 311 312 config_interrupts(&fdc->sc_dev, fdcfinishattach); 313 } 314 315 void 316 fdcfinishattach(self) 317 struct device *self; 318 { 319 struct fdc_softc *fdc = (void *)self; 320 bus_space_tag_t iot = fdc->sc_iot; 321 bus_space_handle_t ioh = fdc->sc_ioh; 322 struct fdc_attach_args fa; 323 #if defined(i386) 324 int type; 325 #endif 326 327 /* 328 * Reset the controller to get it into a known state. Not all 329 * probes necessarily need do this to discover the controller up 330 * front, so don't assume anything. 331 */ 332 333 bus_space_write_1(iot, ioh, fdout, 0); 334 delay(100); 335 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 336 337 /* see if it can handle a command */ 338 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 339 printf ("%s: can't reset controller\n", fdc->sc_dev.dv_xname); 340 return; 341 } 342 out_fdc(iot, ioh, 0xdf); 343 out_fdc(iot, ioh, 2); 344 345 #if defined(i386) 346 /* 347 * The NVRAM info only tells us about the first two disks on the 348 * `primary' floppy controller. 349 */ 350 if (fdc->sc_dev.dv_unit == 0) 351 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 352 else 353 type = -1; 354 #endif /* i386 */ 355 356 /* physical limit: four drives per controller. */ 357 fdc->sc_state = PROBING; 358 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 359 if (fdc->sc_known) { 360 if (fdc->sc_present & (1 << fa.fa_drive)) { 361 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 362 config_found(&fdc->sc_dev, (void *)&fa, 363 fdprint); 364 } 365 } else { 366 #if defined(i386) 367 if (type >= 0 && fa.fa_drive < 2) 368 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 369 type, fa.fa_drive); 370 else 371 fa.fa_deftype = NULL; /* unknown */ 372 #elif defined(atari) 373 /* 374 * Atari has a different ordening, defaults to 1.44 375 */ 376 fa.fa_deftype = &fd_types[2]; 377 #else 378 /* 379 * Default to 1.44MB on Alpha and BeBox. How do we tell 380 * on these platforms? 381 */ 382 fa.fa_deftype = &fd_types[0]; 383 #endif /* i386 */ 384 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 385 } 386 } 387 fdc->sc_state = DEVIDLE; 388 } 389 390 int 391 fdprobe(parent, match, aux) 392 struct device *parent; 393 struct cfdata *match; 394 void *aux; 395 { 396 struct fdc_softc *fdc = (void *)parent; 397 struct cfdata *cf = match; 398 struct fdc_attach_args *fa = aux; 399 int drive = fa->fa_drive; 400 bus_space_tag_t iot = fdc->sc_iot; 401 bus_space_handle_t ioh = fdc->sc_ioh; 402 int n; 403 int s; 404 405 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 406 cf->cf_loc[FDCCF_DRIVE] != drive) 407 return 0; 408 /* 409 * XXX 410 * This is to work around some odd interactions between this driver 411 * and SMC Ethernet cards. 412 */ 413 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 414 return 0; 415 416 /* Use PNP information if available */ 417 if (fdc->sc_known) 418 return 1; 419 420 s = splbio(); 421 /* toss any interrupt status */ 422 for (n = 0; n < 4; n++) { 423 out_fdc(iot, ioh, NE7CMD_SENSEI); 424 (void) fdcresult(fdc); 425 } 426 /* select drive and turn on motor */ 427 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 428 /* wait for motor to spin up */ 429 (void) tsleep(fdc, PWAIT, "fdprobe1", hz / 4); 430 out_fdc(iot, ioh, NE7CMD_RECAL); 431 out_fdc(iot, ioh, drive); 432 /* wait for recalibrate, up to 2s */ 433 if (tsleep(fdc, PWAIT, "fdprobe2", 2 * hz) != EWOULDBLOCK) { 434 #ifdef FD_DEBUG 435 /* XXX */ 436 printf("fdprobe: got intr\n"); 437 #endif 438 } 439 out_fdc(iot, ioh, NE7CMD_SENSEI); 440 n = fdcresult(fdc); 441 #ifdef FD_DEBUG 442 { 443 int i; 444 printf("fdprobe: status"); 445 for (i = 0; i < n; i++) 446 printf(" %x", fdc->sc_status[i]); 447 printf("\n"); 448 } 449 #endif 450 /* turn off motor */ 451 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 452 splx(s); 453 454 #if defined(bebox) /* XXX What is this about? --thorpej (at) NetBSD.org */ 455 if (n != 2 || (fdc->sc_status[1] != 0)) 456 return 0; 457 #else 458 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 459 return 0; 460 #endif /* bebox */ 461 462 return 1; 463 } 464 465 /* 466 * Controller is working, and drive responded. Attach it. 467 */ 468 void 469 fdattach(parent, self, aux) 470 struct device *parent, *self; 471 void *aux; 472 { 473 struct fdc_softc *fdc = (void *)parent; 474 struct fd_softc *fd = (void *)self; 475 struct fdc_attach_args *fa = aux; 476 const struct fd_type *type = fa->fa_deftype; 477 int drive = fa->fa_drive; 478 479 callout_init(&fd->sc_motoron_ch); 480 callout_init(&fd->sc_motoroff_ch); 481 482 /* XXX Allow `flags' to override device type? */ 483 484 if (type) 485 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 486 type->cyls, type->heads, type->sectrac); 487 else 488 printf(": density unknown\n"); 489 490 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 491 fd->sc_cylin = -1; 492 fd->sc_drive = drive; 493 fd->sc_deftype = type; 494 fdc->sc_fd[drive] = fd; 495 496 /* 497 * Initialize and attach the disk structure. 498 */ 499 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 500 fd->sc_dk.dk_driver = &fddkdriver; 501 disk_attach(&fd->sc_dk); 502 503 /* 504 * Establish a mountroot hook. 505 */ 506 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 507 508 /* Needed to power off if the motor is on when we halt. */ 509 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 510 511 #if NRND > 0 512 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 513 RND_TYPE_DISK, 0); 514 #endif 515 } 516 517 #if defined(i386) 518 /* 519 * Translate nvram type into internal data structure. Return NULL for 520 * none/unknown/unusable. 521 */ 522 const struct fd_type * 523 fd_nvtotype(fdc, nvraminfo, drive) 524 char *fdc; 525 int nvraminfo, drive; 526 { 527 int type; 528 529 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 530 switch (type) { 531 case NVRAM_DISKETTE_NONE: 532 return NULL; 533 case NVRAM_DISKETTE_12M: 534 return &fd_types[1]; 535 case NVRAM_DISKETTE_TYPE5: 536 case NVRAM_DISKETTE_TYPE6: 537 /* XXX We really ought to handle 2.88MB format. */ 538 case NVRAM_DISKETTE_144M: 539 #if NMCA > 0 540 if (MCA_system) 541 return &mca_fd_types[0]; 542 else 543 #endif /* NMCA > 0 */ 544 return &fd_types[0]; 545 case NVRAM_DISKETTE_360K: 546 return &fd_types[3]; 547 case NVRAM_DISKETTE_720K: 548 #if NMCA > 0 549 if (MCA_system) 550 return &mca_fd_types[1]; 551 else 552 #endif /* NMCA > 0 */ 553 return &fd_types[4]; 554 default: 555 printf("%s: drive %d: unknown device type 0x%x\n", 556 fdc, drive, type); 557 return NULL; 558 } 559 } 560 #endif /* i386 */ 561 562 inline const struct fd_type * 563 fd_dev_to_type(fd, dev) 564 struct fd_softc *fd; 565 dev_t dev; 566 { 567 u_int type = FDTYPE(dev); 568 569 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 570 return NULL; 571 return type ? &fd_types[type - 1] : fd->sc_deftype; 572 } 573 574 void 575 fdstrategy(bp) 576 register struct buf *bp; /* IO operation to perform */ 577 { 578 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 579 int sz; 580 int s; 581 582 /* Valid unit, controller, and request? */ 583 if (bp->b_blkno < 0 || 584 ((bp->b_bcount % FDC_BSIZE) != 0 && 585 (bp->b_flags & B_FORMAT) == 0)) { 586 bp->b_error = EINVAL; 587 goto bad; 588 } 589 590 /* If it's a null transfer, return immediately. */ 591 if (bp->b_bcount == 0) 592 goto done; 593 594 sz = howmany(bp->b_bcount, FDC_BSIZE); 595 596 if (bp->b_blkno + sz > fd->sc_type->size) { 597 sz = fd->sc_type->size - bp->b_blkno; 598 if (sz == 0) { 599 /* If exactly at end of disk, return EOF. */ 600 goto done; 601 } 602 if (sz < 0) { 603 /* If past end of disk, return EINVAL. */ 604 bp->b_error = EINVAL; 605 goto bad; 606 } 607 /* Otherwise, truncate request. */ 608 bp->b_bcount = sz << DEV_BSHIFT; 609 } 610 611 bp->b_rawblkno = bp->b_blkno; 612 bp->b_cylinder = 613 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 614 615 #ifdef FD_DEBUG 616 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 617 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 618 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 619 #endif 620 621 /* Queue transfer on drive, activate drive and controller if idle. */ 622 s = splbio(); 623 BUFQ_PUT(fd->sc_q, bp); 624 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 625 if (fd->sc_active == 0) 626 fdstart(fd); 627 #ifdef DIAGNOSTIC 628 else { 629 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 630 if (fdc->sc_state == DEVIDLE) { 631 printf("fdstrategy: controller inactive\n"); 632 fdcstart(fdc); 633 } 634 } 635 #endif 636 splx(s); 637 return; 638 639 bad: 640 bp->b_flags |= B_ERROR; 641 done: 642 /* Toss transfer; we're done early. */ 643 bp->b_resid = bp->b_bcount; 644 biodone(bp); 645 } 646 647 void 648 fdstart(fd) 649 struct fd_softc *fd; 650 { 651 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 652 int active = !TAILQ_EMPTY(&fdc->sc_drives); 653 654 /* Link into controller queue. */ 655 fd->sc_active = 1; 656 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 657 658 /* If controller not already active, start it. */ 659 if (!active) 660 fdcstart(fdc); 661 } 662 663 void 664 fdfinish(fd, bp) 665 struct fd_softc *fd; 666 struct buf *bp; 667 { 668 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 669 670 /* 671 * Move this drive to the end of the queue to give others a `fair' 672 * chance. We only force a switch if N operations are completed while 673 * another drive is waiting to be serviced, since there is a long motor 674 * startup delay whenever we switch. 675 */ 676 (void)BUFQ_GET(fd->sc_q); 677 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 678 fd->sc_ops = 0; 679 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 680 if (BUFQ_PEEK(fd->sc_q) != 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; 687 688 #if NRND > 0 689 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 690 #endif 691 692 biodone(bp); 693 /* turn off motor 5s from now */ 694 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 695 fdc->sc_state = DEVIDLE; 696 } 697 698 int 699 fdread(dev, uio, flags) 700 dev_t dev; 701 struct uio *uio; 702 int flags; 703 { 704 705 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 706 } 707 708 int 709 fdwrite(dev, uio, flags) 710 dev_t dev; 711 struct uio *uio; 712 int flags; 713 { 714 715 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 716 } 717 718 void 719 fd_set_motor(fdc, reset) 720 struct fdc_softc *fdc; 721 int reset; 722 { 723 struct fd_softc *fd; 724 u_char status; 725 int n; 726 727 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 728 status = fd->sc_drive; 729 else 730 status = 0; 731 if (!reset) 732 status |= FDO_FRST | FDO_FDMAEN; 733 for (n = 0; n < 4; n++) 734 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 735 status |= FDO_MOEN(n); 736 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 737 } 738 739 void 740 fd_motor_off(arg) 741 void *arg; 742 { 743 struct fd_softc *fd = arg; 744 int s; 745 746 s = splbio(); 747 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 748 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 749 splx(s); 750 } 751 752 void 753 fd_motor_on(arg) 754 void *arg; 755 { 756 struct fd_softc *fd = arg; 757 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 758 int s; 759 760 s = splbio(); 761 fd->sc_flags &= ~FD_MOTOR_WAIT; 762 if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT)) 763 (void) fdcintr(fdc); 764 splx(s); 765 } 766 767 int 768 fdcresult(fdc) 769 struct fdc_softc *fdc; 770 { 771 bus_space_tag_t iot = fdc->sc_iot; 772 bus_space_handle_t ioh = fdc->sc_ioh; 773 u_char i; 774 u_int j = 100000, 775 n = 0; 776 777 for (; j; j--) { 778 i = bus_space_read_1(iot, ioh, fdsts) & 779 (NE7_DIO | NE7_RQM | NE7_CB); 780 if (i == NE7_RQM) 781 return n; 782 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 783 if (n >= sizeof(fdc->sc_status)) { 784 log(LOG_ERR, "fdcresult: overrun\n"); 785 return -1; 786 } 787 fdc->sc_status[n++] = 788 bus_space_read_1(iot, ioh, fddata); 789 } 790 delay(10); 791 } 792 log(LOG_ERR, "fdcresult: timeout\n"); 793 return -1; 794 } 795 796 int 797 out_fdc(iot, ioh, x) 798 bus_space_tag_t iot; 799 bus_space_handle_t ioh; 800 u_char x; 801 { 802 u_char i; 803 u_int j = 100000; 804 805 for (; j; j--) { 806 i = bus_space_read_1(iot, ioh, fdsts) & 807 (NE7_DIO | NE7_RQM); 808 if (i == NE7_RQM) { 809 bus_space_write_1(iot, ioh, fddata, x); 810 return 0; 811 } 812 delay(10); 813 } 814 return -1; 815 } 816 817 int 818 fdopen(dev, flags, mode, l) 819 dev_t dev; 820 int flags; 821 int mode; 822 struct lwp *l; 823 { 824 struct fd_softc *fd; 825 const struct fd_type *type; 826 827 fd = device_lookup(&fd_cd, FDUNIT(dev)); 828 if (fd == NULL) 829 return (ENXIO); 830 831 type = fd_dev_to_type(fd, dev); 832 if (type == NULL) 833 return ENXIO; 834 835 if ((fd->sc_flags & FD_OPEN) != 0 && 836 memcmp(fd->sc_type, type, sizeof(*type))) 837 return EBUSY; 838 839 fd->sc_type_copy = *type; 840 fd->sc_type = &fd->sc_type_copy; 841 fd->sc_cylin = -1; 842 fd->sc_flags |= FD_OPEN; 843 844 return 0; 845 } 846 847 int 848 fdclose(dev, flags, mode, l) 849 dev_t dev; 850 int flags; 851 int mode; 852 struct lwp *l; 853 { 854 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 855 856 fd->sc_flags &= ~FD_OPEN; 857 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 858 return 0; 859 } 860 861 void 862 fdcstart(fdc) 863 struct fdc_softc *fdc; 864 { 865 866 #ifdef DIAGNOSTIC 867 /* only got here if controller's drive queue was inactive; should 868 be in idle state */ 869 if (fdc->sc_state != DEVIDLE) { 870 printf("fdcstart: not idle\n"); 871 return; 872 } 873 #endif 874 (void) fdcintr(fdc); 875 } 876 877 void 878 fdcstatus(dv, n, s) 879 struct device *dv; 880 int n; 881 const char *s; 882 { 883 struct fdc_softc *fdc = (void *)dv->dv_parent; 884 char bits[64]; 885 886 if (n == 0) { 887 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 888 (void) fdcresult(fdc); 889 n = 2; 890 } 891 892 printf("%s: %s", dv->dv_xname, s); 893 894 switch (n) { 895 case 0: 896 printf("\n"); 897 break; 898 case 2: 899 printf(" (st0 %s cyl %d)\n", 900 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 901 bits, sizeof(bits)), fdc->sc_status[1]); 902 break; 903 case 7: 904 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 905 NE7_ST0BITS, bits, sizeof(bits))); 906 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 907 NE7_ST1BITS, bits, sizeof(bits))); 908 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 909 NE7_ST2BITS, bits, sizeof(bits))); 910 printf(" cyl %d head %d sec %d)\n", 911 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 912 break; 913 #ifdef DIAGNOSTIC 914 default: 915 printf("\nfdcstatus: weird size"); 916 break; 917 #endif 918 } 919 } 920 921 void 922 fdctimeout(arg) 923 void *arg; 924 { 925 struct fdc_softc *fdc = arg; 926 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 927 int s; 928 929 s = splbio(); 930 #ifdef DEBUG 931 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 932 #endif 933 fdcstatus(&fd->sc_dev, 0, "timeout"); 934 935 if (BUFQ_PEEK(fd->sc_q) != NULL) 936 fdc->sc_state++; 937 else 938 fdc->sc_state = DEVIDLE; 939 940 (void) fdcintr(fdc); 941 splx(s); 942 } 943 944 void 945 fdcpseudointr(arg) 946 void *arg; 947 { 948 int s; 949 950 /* Just ensure it has the right spl. */ 951 s = splbio(); 952 (void) fdcintr(arg); 953 splx(s); 954 } 955 956 int 957 fdcintr(arg) 958 void *arg; 959 { 960 struct fdc_softc *fdc = arg; 961 #define st0 fdc->sc_status[0] 962 #define cyl fdc->sc_status[1] 963 struct fd_softc *fd; 964 struct buf *bp; 965 bus_space_tag_t iot = fdc->sc_iot; 966 bus_space_handle_t ioh = fdc->sc_ioh; 967 int read, head, sec, i, nblks; 968 struct fd_type *type; 969 struct ne7_fd_formb *finfo = NULL; 970 971 if (fdc->sc_state == PROBING) { 972 #ifdef DEBUG 973 printf("fdcintr: got probe interrupt\n"); 974 #endif 975 wakeup(fdc); 976 return 1; 977 } 978 979 loop: 980 /* Is there a drive for the controller to do a transfer with? */ 981 fd = TAILQ_FIRST(&fdc->sc_drives); 982 if (fd == NULL) { 983 fdc->sc_state = DEVIDLE; 984 return 1; 985 } 986 987 /* Is there a transfer to this drive? If not, deactivate drive. */ 988 bp = BUFQ_PEEK(fd->sc_q); 989 if (bp == NULL) { 990 fd->sc_ops = 0; 991 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 992 fd->sc_active = 0; 993 goto loop; 994 } 995 996 if (bp->b_flags & B_FORMAT) 997 finfo = (struct ne7_fd_formb *)bp->b_data; 998 999 switch (fdc->sc_state) { 1000 case DEVIDLE: 1001 fdc->sc_errors = 0; 1002 fd->sc_skip = 0; 1003 fd->sc_bcount = bp->b_bcount; 1004 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1005 callout_stop(&fd->sc_motoroff_ch); 1006 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1007 fdc->sc_state = MOTORWAIT; 1008 return 1; 1009 } 1010 if ((fd->sc_flags & FD_MOTOR) == 0) { 1011 /* Turn on the motor, being careful about pairing. */ 1012 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1013 if (ofd && ofd->sc_flags & FD_MOTOR) { 1014 callout_stop(&ofd->sc_motoroff_ch); 1015 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1016 } 1017 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1018 fd_set_motor(fdc, 0); 1019 fdc->sc_state = MOTORWAIT; 1020 /* Allow .25s for motor to stabilize. */ 1021 callout_reset(&fd->sc_motoron_ch, hz / 4, 1022 fd_motor_on, fd); 1023 return 1; 1024 } 1025 /* Make sure the right drive is selected. */ 1026 fd_set_motor(fdc, 0); 1027 1028 /* fall through */ 1029 case DOSEEK: 1030 doseek: 1031 if (fd->sc_cylin == bp->b_cylinder) 1032 goto doio; 1033 1034 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1035 out_fdc(iot, ioh, fd->sc_type->steprate); 1036 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1037 1038 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1039 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1040 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1041 1042 fd->sc_cylin = -1; 1043 fdc->sc_state = SEEKWAIT; 1044 1045 fd->sc_dk.dk_seek++; 1046 disk_busy(&fd->sc_dk); 1047 1048 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1049 return 1; 1050 1051 case DOIO: 1052 doio: 1053 type = fd->sc_type; 1054 if (finfo) 1055 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1056 (char *)finfo; 1057 sec = fd->sc_blkno % type->seccyl; 1058 nblks = type->seccyl - sec; 1059 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1060 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1061 fd->sc_nblks = nblks; 1062 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1063 head = sec / type->sectrac; 1064 sec -= head * type->sectrac; 1065 #ifdef DIAGNOSTIC 1066 { 1067 int block; 1068 block = (fd->sc_cylin * type->heads + head) 1069 * type->sectrac + sec; 1070 if (block != fd->sc_blkno) { 1071 printf("fdcintr: block %d != blkno " 1072 "%" PRId64 "\n", block, fd->sc_blkno); 1073 #ifdef DDB 1074 Debugger(); 1075 #endif 1076 } 1077 } 1078 #endif 1079 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1080 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1081 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1082 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1083 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1084 #ifdef FD_DEBUG 1085 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1086 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1087 head, sec, nblks); 1088 #endif 1089 if (finfo) { 1090 /* formatting */ 1091 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1092 fdc->sc_errors = 4; 1093 fdcretry(fdc); 1094 goto loop; 1095 } 1096 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1097 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1098 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1099 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1100 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1101 } else { 1102 if (read) 1103 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1104 else 1105 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1106 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1107 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1108 out_fdc(iot, ioh, head); 1109 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1110 out_fdc(iot, ioh, type->secsize);/* sector size */ 1111 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1112 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1113 out_fdc(iot, ioh, type->datalen);/* data length */ 1114 } 1115 fdc->sc_state = IOCOMPLETE; 1116 1117 disk_busy(&fd->sc_dk); 1118 1119 /* allow 2 seconds for operation */ 1120 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1121 return 1; /* will return later */ 1122 1123 case SEEKWAIT: 1124 callout_stop(&fdc->sc_timo_ch); 1125 fdc->sc_state = SEEKCOMPLETE; 1126 /* allow 1/50 second for heads to settle */ 1127 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1128 return 1; 1129 1130 case SEEKCOMPLETE: 1131 /* no data on seek */ 1132 disk_unbusy(&fd->sc_dk, 0, 0); 1133 1134 /* Make sure seek really happened. */ 1135 out_fdc(iot, ioh, NE7CMD_SENSEI); 1136 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1137 cyl != bp->b_cylinder * fd->sc_type->step) { 1138 #ifdef FD_DEBUG 1139 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1140 #endif 1141 fdcretry(fdc); 1142 goto loop; 1143 } 1144 fd->sc_cylin = bp->b_cylinder; 1145 goto doio; 1146 1147 case IOTIMEDOUT: 1148 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1149 case SEEKTIMEDOUT: 1150 case RECALTIMEDOUT: 1151 case RESETTIMEDOUT: 1152 fdcretry(fdc); 1153 goto loop; 1154 1155 case IOCOMPLETE: /* IO DONE, post-analyze */ 1156 callout_stop(&fdc->sc_timo_ch); 1157 1158 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1159 (bp->b_flags & B_READ)); 1160 1161 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1162 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1163 #ifdef FD_DEBUG 1164 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1165 "read failed" : "write failed"); 1166 printf("blkno %llu nblks %d\n", 1167 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1168 #endif 1169 fdcretry(fdc); 1170 goto loop; 1171 } 1172 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1173 if (fdc->sc_errors) { 1174 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1175 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1176 printf("\n"); 1177 fdc->sc_errors = 0; 1178 } 1179 fd->sc_blkno += fd->sc_nblks; 1180 fd->sc_skip += fd->sc_nbytes; 1181 fd->sc_bcount -= fd->sc_nbytes; 1182 if (!finfo && fd->sc_bcount > 0) { 1183 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1184 goto doseek; 1185 } 1186 fdfinish(fd, bp); 1187 goto loop; 1188 1189 case DORESET: 1190 /* try a reset, keep motor on */ 1191 fd_set_motor(fdc, 1); 1192 delay(100); 1193 fd_set_motor(fdc, 0); 1194 fdc->sc_state = RESETCOMPLETE; 1195 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1196 return 1; /* will return later */ 1197 1198 case RESETCOMPLETE: 1199 callout_stop(&fdc->sc_timo_ch); 1200 /* clear the controller output buffer */ 1201 for (i = 0; i < 4; i++) { 1202 out_fdc(iot, ioh, NE7CMD_SENSEI); 1203 (void) fdcresult(fdc); 1204 } 1205 1206 /* fall through */ 1207 case DORECAL: 1208 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1209 out_fdc(iot, ioh, fd->sc_drive); 1210 fdc->sc_state = RECALWAIT; 1211 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1212 return 1; /* will return later */ 1213 1214 case RECALWAIT: 1215 callout_stop(&fdc->sc_timo_ch); 1216 fdc->sc_state = RECALCOMPLETE; 1217 /* allow 1/30 second for heads to settle */ 1218 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1219 return 1; /* will return later */ 1220 1221 case RECALCOMPLETE: 1222 out_fdc(iot, ioh, NE7CMD_SENSEI); 1223 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1224 #ifdef FD_DEBUG 1225 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1226 #endif 1227 fdcretry(fdc); 1228 goto loop; 1229 } 1230 fd->sc_cylin = 0; 1231 goto doseek; 1232 1233 case MOTORWAIT: 1234 if (fd->sc_flags & FD_MOTOR_WAIT) 1235 return 1; /* time's not up yet */ 1236 goto doseek; 1237 1238 default: 1239 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1240 return 1; 1241 } 1242 #ifdef DIAGNOSTIC 1243 panic("fdcintr: impossible"); 1244 #endif 1245 #undef st0 1246 #undef cyl 1247 } 1248 1249 void 1250 fdcretry(fdc) 1251 struct fdc_softc *fdc; 1252 { 1253 char bits[64]; 1254 struct fd_softc *fd; 1255 struct buf *bp; 1256 1257 fd = TAILQ_FIRST(&fdc->sc_drives); 1258 bp = BUFQ_PEEK(fd->sc_q); 1259 1260 if (fd->sc_opts & FDOPT_NORETRY) 1261 goto fail; 1262 switch (fdc->sc_errors) { 1263 case 0: 1264 /* try again */ 1265 fdc->sc_state = DOSEEK; 1266 break; 1267 1268 case 1: case 2: case 3: 1269 /* didn't work; try recalibrating */ 1270 fdc->sc_state = DORECAL; 1271 break; 1272 1273 case 4: 1274 /* still no go; reset the bastard */ 1275 fdc->sc_state = DORESET; 1276 break; 1277 1278 default: 1279 fail: 1280 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1281 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1282 fd->sc_skip / FDC_BSIZE, 1283 (struct disklabel *)NULL); 1284 1285 printf(" (st0 %s", 1286 bitmask_snprintf(fdc->sc_status[0], 1287 NE7_ST0BITS, bits, 1288 sizeof(bits))); 1289 printf(" st1 %s", 1290 bitmask_snprintf(fdc->sc_status[1], 1291 NE7_ST1BITS, bits, 1292 sizeof(bits))); 1293 printf(" st2 %s", 1294 bitmask_snprintf(fdc->sc_status[2], 1295 NE7_ST2BITS, bits, 1296 sizeof(bits))); 1297 printf(" cyl %d head %d sec %d)\n", 1298 fdc->sc_status[3], 1299 fdc->sc_status[4], 1300 fdc->sc_status[5]); 1301 } 1302 1303 bp->b_flags |= B_ERROR; 1304 bp->b_error = EIO; 1305 fdfinish(fd, bp); 1306 } 1307 fdc->sc_errors++; 1308 } 1309 1310 int 1311 fdioctl(dev, cmd, addr, flag, l) 1312 dev_t dev; 1313 u_long cmd; 1314 caddr_t addr; 1315 int flag; 1316 struct lwp *l; 1317 { 1318 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1319 struct fdformat_parms *form_parms; 1320 struct fdformat_cmd *form_cmd; 1321 struct ne7_fd_formb *fd_formb; 1322 struct disklabel buffer; 1323 int error; 1324 unsigned int scratch; 1325 int il[FD_MAX_NSEC + 1]; 1326 register int i, j; 1327 #ifdef __HAVE_OLD_DISKLABEL 1328 struct disklabel newlabel; 1329 #endif 1330 1331 switch (cmd) { 1332 case DIOCGDINFO: 1333 #ifdef __HAVE_OLD_DISKLABEL 1334 case ODIOCGDINFO: 1335 #endif 1336 memset(&buffer, 0, sizeof(buffer)); 1337 1338 buffer.d_secpercyl = fd->sc_type->seccyl; 1339 buffer.d_type = DTYPE_FLOPPY; 1340 buffer.d_secsize = FDC_BSIZE; 1341 1342 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1343 return EINVAL; 1344 1345 #ifdef __HAVE_OLD_DISKLABEL 1346 if (cmd == ODIOCGDINFO) { 1347 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1348 return ENOTTY; 1349 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1350 } else 1351 #endif 1352 *(struct disklabel *)addr = buffer; 1353 return 0; 1354 1355 case DIOCWLABEL: 1356 if ((flag & FWRITE) == 0) 1357 return EBADF; 1358 /* XXX do something */ 1359 return 0; 1360 1361 case DIOCWDINFO: 1362 #ifdef __HAVE_OLD_DISKLABEL 1363 case ODIOCWDINFO: 1364 #endif 1365 { 1366 struct disklabel *lp; 1367 1368 if ((flag & FWRITE) == 0) 1369 return EBADF; 1370 #ifdef __HAVE_OLD_DISKLABEL 1371 if (cmd == ODIOCWDINFO) { 1372 memset(&newlabel, 0, sizeof newlabel); 1373 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1374 lp = &newlabel; 1375 } else 1376 #endif 1377 lp = (struct disklabel *)addr; 1378 1379 error = setdisklabel(&buffer, lp, 0, NULL); 1380 if (error) 1381 return error; 1382 1383 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1384 return error; 1385 } 1386 1387 case FDIOCGETFORMAT: 1388 form_parms = (struct fdformat_parms *)addr; 1389 form_parms->fdformat_version = FDFORMAT_VERSION; 1390 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1391 form_parms->ncyl = fd->sc_type->cyls; 1392 form_parms->nspt = fd->sc_type->sectrac; 1393 form_parms->ntrk = fd->sc_type->heads; 1394 form_parms->stepspercyl = fd->sc_type->step; 1395 form_parms->gaplen = fd->sc_type->gap2; 1396 form_parms->fillbyte = fd->sc_type->fillbyte; 1397 form_parms->interleave = fd->sc_type->interleave; 1398 switch (fd->sc_type->rate) { 1399 case FDC_500KBPS: 1400 form_parms->xfer_rate = 500 * 1024; 1401 break; 1402 case FDC_300KBPS: 1403 form_parms->xfer_rate = 300 * 1024; 1404 break; 1405 case FDC_250KBPS: 1406 form_parms->xfer_rate = 250 * 1024; 1407 break; 1408 default: 1409 return EINVAL; 1410 } 1411 return 0; 1412 1413 case FDIOCSETFORMAT: 1414 if((flag & FWRITE) == 0) 1415 return EBADF; /* must be opened for writing */ 1416 form_parms = (struct fdformat_parms *)addr; 1417 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1418 return EINVAL; /* wrong version of formatting prog */ 1419 1420 scratch = form_parms->nbps >> 7; 1421 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1422 scratch & ~(1 << (ffs(scratch)-1))) 1423 /* not a power-of-two multiple of 128 */ 1424 return EINVAL; 1425 1426 switch (form_parms->xfer_rate) { 1427 case 500 * 1024: 1428 fd->sc_type->rate = FDC_500KBPS; 1429 break; 1430 case 300 * 1024: 1431 fd->sc_type->rate = FDC_300KBPS; 1432 break; 1433 case 250 * 1024: 1434 fd->sc_type->rate = FDC_250KBPS; 1435 break; 1436 default: 1437 return EINVAL; 1438 } 1439 1440 if (form_parms->nspt > FD_MAX_NSEC || 1441 form_parms->fillbyte > 0xff || 1442 form_parms->interleave > 0xff) 1443 return EINVAL; 1444 fd->sc_type->sectrac = form_parms->nspt; 1445 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1446 return EINVAL; 1447 fd->sc_type->heads = form_parms->ntrk; 1448 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1449 fd->sc_type->secsize = ffs(scratch)-1; 1450 fd->sc_type->gap2 = form_parms->gaplen; 1451 fd->sc_type->cyls = form_parms->ncyl; 1452 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1453 form_parms->nbps / DEV_BSIZE; 1454 fd->sc_type->step = form_parms->stepspercyl; 1455 fd->sc_type->fillbyte = form_parms->fillbyte; 1456 fd->sc_type->interleave = form_parms->interleave; 1457 return 0; 1458 1459 case FDIOCFORMAT_TRACK: 1460 if((flag & FWRITE) == 0) 1461 return EBADF; /* must be opened for writing */ 1462 form_cmd = (struct fdformat_cmd *)addr; 1463 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1464 return EINVAL; /* wrong version of formatting prog */ 1465 1466 if (form_cmd->head >= fd->sc_type->heads || 1467 form_cmd->cylinder >= fd->sc_type->cyls) { 1468 return EINVAL; 1469 } 1470 1471 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1472 M_TEMP, M_NOWAIT); 1473 if (fd_formb == 0) 1474 return ENOMEM; 1475 1476 fd_formb->head = form_cmd->head; 1477 fd_formb->cyl = form_cmd->cylinder; 1478 fd_formb->transfer_rate = fd->sc_type->rate; 1479 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1480 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1481 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1482 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1483 1484 memset(il, 0, sizeof il); 1485 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1486 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1487 j++; 1488 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1489 j += fd->sc_type->interleave; 1490 } 1491 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1492 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1493 fd_formb->fd_formb_headno(i) = form_cmd->head; 1494 fd_formb->fd_formb_secno(i) = il[i+1]; 1495 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1496 } 1497 1498 error = fdformat(dev, fd_formb, l); 1499 free(fd_formb, M_TEMP); 1500 return error; 1501 1502 case FDIOCGETOPTS: /* get drive options */ 1503 *(int *)addr = fd->sc_opts; 1504 return 0; 1505 1506 case FDIOCSETOPTS: /* set drive options */ 1507 fd->sc_opts = *(int *)addr; 1508 return 0; 1509 1510 default: 1511 return ENOTTY; 1512 } 1513 1514 #ifdef DIAGNOSTIC 1515 panic("fdioctl: impossible"); 1516 #endif 1517 } 1518 1519 int 1520 fdformat(dev, finfo, l) 1521 dev_t dev; 1522 struct ne7_fd_formb *finfo; 1523 struct lwp *l; 1524 { 1525 int rv = 0; 1526 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1527 struct fd_type *type = fd->sc_type; 1528 struct buf *bp; 1529 1530 /* set up a buffer header for fdstrategy() */ 1531 bp = getiobuf_nowait(); 1532 if (bp == NULL) 1533 return ENOBUFS; 1534 1535 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1536 bp->b_proc = l->l_proc; 1537 bp->b_dev = dev; 1538 1539 /* 1540 * calculate a fake blkno, so fdstrategy() would initiate a 1541 * seek to the requested cylinder 1542 */ 1543 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1544 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1545 1546 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1547 bp->b_data = (caddr_t)finfo; 1548 1549 #ifdef DEBUG 1550 printf("fdformat: blkno %" PRIx64 " count %x\n", 1551 bp->b_blkno, bp->b_bcount); 1552 #endif 1553 1554 /* now do the format */ 1555 fdstrategy(bp); 1556 1557 /* ...and wait for it to complete */ 1558 rv = biowait(bp); 1559 putiobuf(bp); 1560 return rv; 1561 } 1562 1563 /* 1564 * Mountroot hook: prompt the user to enter the root file system 1565 * floppy. 1566 */ 1567 void 1568 fd_mountroot_hook(dev) 1569 struct device *dev; 1570 { 1571 int c; 1572 1573 printf("Insert filesystem floppy and press return."); 1574 cnpollc(1); 1575 for (;;) { 1576 c = cngetc(); 1577 if ((c == '\r') || (c == '\n')) { 1578 printf("\n"); 1579 break; 1580 } 1581 } 1582 cnpollc(0); 1583 } 1584
Indexes created Sun Sep 28 12:09:53 GMT 2025