fd.c revision 1.57
1 /* $NetBSD: fd.c,v 1.57 2005/02/04 02:10:40 perry 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 1.57 2005/02/04 02:10:40 perry 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, 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 proc *); 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, BUFQ_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 %d b_bcount %ld blkno %d cylin %ld sz %d\n", 617 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 618 #endif 619 620 /* Queue transfer on drive, activate drive and controller if idle. */ 621 s = splbio(); 622 BUFQ_PUT(&fd->sc_q, bp); 623 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 624 if (fd->sc_active == 0) 625 fdstart(fd); 626 #ifdef DIAGNOSTIC 627 else { 628 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 629 if (fdc->sc_state == DEVIDLE) { 630 printf("fdstrategy: controller inactive\n"); 631 fdcstart(fdc); 632 } 633 } 634 #endif 635 splx(s); 636 return; 637 638 bad: 639 bp->b_flags |= B_ERROR; 640 done: 641 /* Toss transfer; we're done early. */ 642 bp->b_resid = bp->b_bcount; 643 biodone(bp); 644 } 645 646 void 647 fdstart(fd) 648 struct fd_softc *fd; 649 { 650 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 651 int active = !TAILQ_EMPTY(&fdc->sc_drives); 652 653 /* Link into controller queue. */ 654 fd->sc_active = 1; 655 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 656 657 /* If controller not already active, start it. */ 658 if (!active) 659 fdcstart(fdc); 660 } 661 662 void 663 fdfinish(fd, bp) 664 struct fd_softc *fd; 665 struct buf *bp; 666 { 667 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 668 669 /* 670 * Move this drive to the end of the queue to give others a `fair' 671 * chance. We only force a switch if N operations are completed while 672 * another drive is waiting to be serviced, since there is a long motor 673 * startup delay whenever we switch. 674 */ 675 (void)BUFQ_GET(&fd->sc_q); 676 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 677 fd->sc_ops = 0; 678 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 679 if (BUFQ_PEEK(&fd->sc_q) != NULL) 680 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 681 else 682 fd->sc_active = 0; 683 } 684 bp->b_resid = fd->sc_bcount; 685 fd->sc_skip = 0; 686 687 #if NRND > 0 688 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 689 #endif 690 691 biodone(bp); 692 /* turn off motor 5s from now */ 693 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 694 fdc->sc_state = DEVIDLE; 695 } 696 697 int 698 fdread(dev, uio, flags) 699 dev_t dev; 700 struct uio *uio; 701 int flags; 702 { 703 704 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 705 } 706 707 int 708 fdwrite(dev, uio, flags) 709 dev_t dev; 710 struct uio *uio; 711 int flags; 712 { 713 714 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 715 } 716 717 void 718 fd_set_motor(fdc, reset) 719 struct fdc_softc *fdc; 720 int reset; 721 { 722 struct fd_softc *fd; 723 u_char status; 724 int n; 725 726 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 727 status = fd->sc_drive; 728 else 729 status = 0; 730 if (!reset) 731 status |= FDO_FRST | FDO_FDMAEN; 732 for (n = 0; n < 4; n++) 733 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 734 status |= FDO_MOEN(n); 735 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 736 } 737 738 void 739 fd_motor_off(arg) 740 void *arg; 741 { 742 struct fd_softc *fd = arg; 743 int s; 744 745 s = splbio(); 746 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 747 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 748 splx(s); 749 } 750 751 void 752 fd_motor_on(arg) 753 void *arg; 754 { 755 struct fd_softc *fd = arg; 756 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 757 int s; 758 759 s = splbio(); 760 fd->sc_flags &= ~FD_MOTOR_WAIT; 761 if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT)) 762 (void) fdcintr(fdc); 763 splx(s); 764 } 765 766 int 767 fdcresult(fdc) 768 struct fdc_softc *fdc; 769 { 770 bus_space_tag_t iot = fdc->sc_iot; 771 bus_space_handle_t ioh = fdc->sc_ioh; 772 u_char i; 773 u_int j = 100000, 774 n = 0; 775 776 for (; j; j--) { 777 i = bus_space_read_1(iot, ioh, fdsts) & 778 (NE7_DIO | NE7_RQM | NE7_CB); 779 if (i == NE7_RQM) 780 return n; 781 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 782 if (n >= sizeof(fdc->sc_status)) { 783 log(LOG_ERR, "fdcresult: overrun\n"); 784 return -1; 785 } 786 fdc->sc_status[n++] = 787 bus_space_read_1(iot, ioh, fddata); 788 } 789 delay(10); 790 } 791 log(LOG_ERR, "fdcresult: timeout\n"); 792 return -1; 793 } 794 795 int 796 out_fdc(iot, ioh, x) 797 bus_space_tag_t iot; 798 bus_space_handle_t ioh; 799 u_char x; 800 { 801 u_char i; 802 u_int j = 100000; 803 804 for (; j; j--) { 805 i = bus_space_read_1(iot, ioh, fdsts) & 806 (NE7_DIO | NE7_RQM); 807 if (i == NE7_RQM) { 808 bus_space_write_1(iot, ioh, fddata, x); 809 return 0; 810 } 811 delay(10); 812 } 813 return -1; 814 } 815 816 int 817 fdopen(dev, flags, mode, p) 818 dev_t dev; 819 int flags; 820 int mode; 821 struct proc *p; 822 { 823 struct fd_softc *fd; 824 const struct fd_type *type; 825 826 fd = device_lookup(&fd_cd, FDUNIT(dev)); 827 if (fd == NULL) 828 return (ENXIO); 829 830 type = fd_dev_to_type(fd, dev); 831 if (type == NULL) 832 return ENXIO; 833 834 if ((fd->sc_flags & FD_OPEN) != 0 && 835 memcmp(fd->sc_type, type, sizeof(*type))) 836 return EBUSY; 837 838 fd->sc_type_copy = *type; 839 fd->sc_type = &fd->sc_type_copy; 840 fd->sc_cylin = -1; 841 fd->sc_flags |= FD_OPEN; 842 843 return 0; 844 } 845 846 int 847 fdclose(dev, flags, mode, p) 848 dev_t dev; 849 int flags; 850 int mode; 851 struct proc *p; 852 { 853 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 854 855 fd->sc_flags &= ~FD_OPEN; 856 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 857 return 0; 858 } 859 860 void 861 fdcstart(fdc) 862 struct fdc_softc *fdc; 863 { 864 865 #ifdef DIAGNOSTIC 866 /* only got here if controller's drive queue was inactive; should 867 be in idle state */ 868 if (fdc->sc_state != DEVIDLE) { 869 printf("fdcstart: not idle\n"); 870 return; 871 } 872 #endif 873 (void) fdcintr(fdc); 874 } 875 876 void 877 fdcstatus(dv, n, s) 878 struct device *dv; 879 int n; 880 char *s; 881 { 882 struct fdc_softc *fdc = (void *)dv->dv_parent; 883 char bits[64]; 884 885 if (n == 0) { 886 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 887 (void) fdcresult(fdc); 888 n = 2; 889 } 890 891 printf("%s: %s", dv->dv_xname, s); 892 893 switch (n) { 894 case 0: 895 printf("\n"); 896 break; 897 case 2: 898 printf(" (st0 %s cyl %d)\n", 899 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 900 bits, sizeof(bits)), fdc->sc_status[1]); 901 break; 902 case 7: 903 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 904 NE7_ST0BITS, bits, sizeof(bits))); 905 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 906 NE7_ST1BITS, bits, sizeof(bits))); 907 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 908 NE7_ST2BITS, bits, sizeof(bits))); 909 printf(" cyl %d head %d sec %d)\n", 910 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 911 break; 912 #ifdef DIAGNOSTIC 913 default: 914 printf("\nfdcstatus: weird size"); 915 break; 916 #endif 917 } 918 } 919 920 void 921 fdctimeout(arg) 922 void *arg; 923 { 924 struct fdc_softc *fdc = arg; 925 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 926 int s; 927 928 s = splbio(); 929 #ifdef DEBUG 930 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 931 #endif 932 fdcstatus(&fd->sc_dev, 0, "timeout"); 933 934 if (BUFQ_PEEK(&fd->sc_q) != NULL) 935 fdc->sc_state++; 936 else 937 fdc->sc_state = DEVIDLE; 938 939 (void) fdcintr(fdc); 940 splx(s); 941 } 942 943 void 944 fdcpseudointr(arg) 945 void *arg; 946 { 947 int s; 948 949 /* Just ensure it has the right spl. */ 950 s = splbio(); 951 (void) fdcintr(arg); 952 splx(s); 953 } 954 955 int 956 fdcintr(arg) 957 void *arg; 958 { 959 struct fdc_softc *fdc = arg; 960 #define st0 fdc->sc_status[0] 961 #define cyl fdc->sc_status[1] 962 struct fd_softc *fd; 963 struct buf *bp; 964 bus_space_tag_t iot = fdc->sc_iot; 965 bus_space_handle_t ioh = fdc->sc_ioh; 966 int read, head, sec, i, nblks; 967 struct fd_type *type; 968 struct ne7_fd_formb *finfo = NULL; 969 970 if (fdc->sc_state == PROBING) { 971 #ifdef DEBUG 972 printf("fdcintr: got probe interrupt\n"); 973 #endif 974 wakeup(fdc); 975 return 1; 976 } 977 978 loop: 979 /* Is there a drive for the controller to do a transfer with? */ 980 fd = TAILQ_FIRST(&fdc->sc_drives); 981 if (fd == NULL) { 982 fdc->sc_state = DEVIDLE; 983 return 1; 984 } 985 986 /* Is there a transfer to this drive? If not, deactivate drive. */ 987 bp = BUFQ_PEEK(&fd->sc_q); 988 if (bp == NULL) { 989 fd->sc_ops = 0; 990 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 991 fd->sc_active = 0; 992 goto loop; 993 } 994 995 if (bp->b_flags & B_FORMAT) 996 finfo = (struct ne7_fd_formb *)bp->b_data; 997 998 switch (fdc->sc_state) { 999 case DEVIDLE: 1000 fdc->sc_errors = 0; 1001 fd->sc_skip = 0; 1002 fd->sc_bcount = bp->b_bcount; 1003 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1004 callout_stop(&fd->sc_motoroff_ch); 1005 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1006 fdc->sc_state = MOTORWAIT; 1007 return 1; 1008 } 1009 if ((fd->sc_flags & FD_MOTOR) == 0) { 1010 /* Turn on the motor, being careful about pairing. */ 1011 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1012 if (ofd && ofd->sc_flags & FD_MOTOR) { 1013 callout_stop(&ofd->sc_motoroff_ch); 1014 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1015 } 1016 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1017 fd_set_motor(fdc, 0); 1018 fdc->sc_state = MOTORWAIT; 1019 /* Allow .25s for motor to stabilize. */ 1020 callout_reset(&fd->sc_motoron_ch, hz / 4, 1021 fd_motor_on, fd); 1022 return 1; 1023 } 1024 /* Make sure the right drive is selected. */ 1025 fd_set_motor(fdc, 0); 1026 1027 /* fall through */ 1028 case DOSEEK: 1029 doseek: 1030 if (fd->sc_cylin == bp->b_cylinder) 1031 goto doio; 1032 1033 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1034 out_fdc(iot, ioh, fd->sc_type->steprate); 1035 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1036 1037 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1038 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1039 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1040 1041 fd->sc_cylin = -1; 1042 fdc->sc_state = SEEKWAIT; 1043 1044 fd->sc_dk.dk_seek++; 1045 disk_busy(&fd->sc_dk); 1046 1047 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1048 return 1; 1049 1050 case DOIO: 1051 doio: 1052 type = fd->sc_type; 1053 if (finfo) 1054 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1055 (char *)finfo; 1056 sec = fd->sc_blkno % type->seccyl; 1057 nblks = type->seccyl - sec; 1058 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1059 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1060 fd->sc_nblks = nblks; 1061 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1062 head = sec / type->sectrac; 1063 sec -= head * type->sectrac; 1064 #ifdef DIAGNOSTIC 1065 { 1066 int block; 1067 block = (fd->sc_cylin * type->heads + head) 1068 * type->sectrac + sec; 1069 if (block != fd->sc_blkno) { 1070 printf("fdcintr: block %d != blkno " 1071 "%" PRId64 "\n", block, fd->sc_blkno); 1072 #ifdef DDB 1073 Debugger(); 1074 #endif 1075 } 1076 } 1077 #endif 1078 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1079 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1080 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1081 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1082 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1083 #ifdef FD_DEBUG 1084 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1085 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1086 head, sec, nblks); 1087 #endif 1088 if (finfo) { 1089 /* formatting */ 1090 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1091 fdc->sc_errors = 4; 1092 fdcretry(fdc); 1093 goto loop; 1094 } 1095 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1096 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1097 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1098 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1099 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1100 } else { 1101 if (read) 1102 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1103 else 1104 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1105 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1106 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1107 out_fdc(iot, ioh, head); 1108 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1109 out_fdc(iot, ioh, type->secsize);/* sector size */ 1110 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1111 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1112 out_fdc(iot, ioh, type->datalen);/* data length */ 1113 } 1114 fdc->sc_state = IOCOMPLETE; 1115 1116 disk_busy(&fd->sc_dk); 1117 1118 /* allow 2 seconds for operation */ 1119 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1120 return 1; /* will return later */ 1121 1122 case SEEKWAIT: 1123 callout_stop(&fdc->sc_timo_ch); 1124 fdc->sc_state = SEEKCOMPLETE; 1125 /* allow 1/50 second for heads to settle */ 1126 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1127 return 1; 1128 1129 case SEEKCOMPLETE: 1130 /* no data on seek */ 1131 disk_unbusy(&fd->sc_dk, 0, 0); 1132 1133 /* Make sure seek really happened. */ 1134 out_fdc(iot, ioh, NE7CMD_SENSEI); 1135 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1136 cyl != bp->b_cylinder * fd->sc_type->step) { 1137 #ifdef FD_DEBUG 1138 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1139 #endif 1140 fdcretry(fdc); 1141 goto loop; 1142 } 1143 fd->sc_cylin = bp->b_cylinder; 1144 goto doio; 1145 1146 case IOTIMEDOUT: 1147 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1148 case SEEKTIMEDOUT: 1149 case RECALTIMEDOUT: 1150 case RESETTIMEDOUT: 1151 fdcretry(fdc); 1152 goto loop; 1153 1154 case IOCOMPLETE: /* IO DONE, post-analyze */ 1155 callout_stop(&fdc->sc_timo_ch); 1156 1157 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1158 (bp->b_flags & B_READ)); 1159 1160 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1161 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1162 #ifdef FD_DEBUG 1163 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1164 "read failed" : "write failed"); 1165 printf("blkno %d nblks %d\n", 1166 fd->sc_blkno, fd->sc_nblks); 1167 #endif 1168 fdcretry(fdc); 1169 goto loop; 1170 } 1171 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1172 if (fdc->sc_errors) { 1173 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1174 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1175 printf("\n"); 1176 fdc->sc_errors = 0; 1177 } 1178 fd->sc_blkno += fd->sc_nblks; 1179 fd->sc_skip += fd->sc_nbytes; 1180 fd->sc_bcount -= fd->sc_nbytes; 1181 if (!finfo && fd->sc_bcount > 0) { 1182 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1183 goto doseek; 1184 } 1185 fdfinish(fd, bp); 1186 goto loop; 1187 1188 case DORESET: 1189 /* try a reset, keep motor on */ 1190 fd_set_motor(fdc, 1); 1191 delay(100); 1192 fd_set_motor(fdc, 0); 1193 fdc->sc_state = RESETCOMPLETE; 1194 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1195 return 1; /* will return later */ 1196 1197 case RESETCOMPLETE: 1198 callout_stop(&fdc->sc_timo_ch); 1199 /* clear the controller output buffer */ 1200 for (i = 0; i < 4; i++) { 1201 out_fdc(iot, ioh, NE7CMD_SENSEI); 1202 (void) fdcresult(fdc); 1203 } 1204 1205 /* fall through */ 1206 case DORECAL: 1207 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1208 out_fdc(iot, ioh, fd->sc_drive); 1209 fdc->sc_state = RECALWAIT; 1210 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1211 return 1; /* will return later */ 1212 1213 case RECALWAIT: 1214 callout_stop(&fdc->sc_timo_ch); 1215 fdc->sc_state = RECALCOMPLETE; 1216 /* allow 1/30 second for heads to settle */ 1217 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1218 return 1; /* will return later */ 1219 1220 case RECALCOMPLETE: 1221 out_fdc(iot, ioh, NE7CMD_SENSEI); 1222 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1223 #ifdef FD_DEBUG 1224 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1225 #endif 1226 fdcretry(fdc); 1227 goto loop; 1228 } 1229 fd->sc_cylin = 0; 1230 goto doseek; 1231 1232 case MOTORWAIT: 1233 if (fd->sc_flags & FD_MOTOR_WAIT) 1234 return 1; /* time's not up yet */ 1235 goto doseek; 1236 1237 default: 1238 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1239 return 1; 1240 } 1241 #ifdef DIAGNOSTIC 1242 panic("fdcintr: impossible"); 1243 #endif 1244 #undef st0 1245 #undef cyl 1246 } 1247 1248 void 1249 fdcretry(fdc) 1250 struct fdc_softc *fdc; 1251 { 1252 char bits[64]; 1253 struct fd_softc *fd; 1254 struct buf *bp; 1255 1256 fd = TAILQ_FIRST(&fdc->sc_drives); 1257 bp = BUFQ_PEEK(&fd->sc_q); 1258 1259 if (fd->sc_opts & FDOPT_NORETRY) 1260 goto fail; 1261 switch (fdc->sc_errors) { 1262 case 0: 1263 /* try again */ 1264 fdc->sc_state = DOSEEK; 1265 break; 1266 1267 case 1: case 2: case 3: 1268 /* didn't work; try recalibrating */ 1269 fdc->sc_state = DORECAL; 1270 break; 1271 1272 case 4: 1273 /* still no go; reset the bastard */ 1274 fdc->sc_state = DORESET; 1275 break; 1276 1277 default: 1278 fail: 1279 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1280 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1281 fd->sc_skip / FDC_BSIZE, 1282 (struct disklabel *)NULL); 1283 1284 printf(" (st0 %s", 1285 bitmask_snprintf(fdc->sc_status[0], 1286 NE7_ST0BITS, bits, 1287 sizeof(bits))); 1288 printf(" st1 %s", 1289 bitmask_snprintf(fdc->sc_status[1], 1290 NE7_ST1BITS, bits, 1291 sizeof(bits))); 1292 printf(" st2 %s", 1293 bitmask_snprintf(fdc->sc_status[2], 1294 NE7_ST2BITS, bits, 1295 sizeof(bits))); 1296 printf(" cyl %d head %d sec %d)\n", 1297 fdc->sc_status[3], 1298 fdc->sc_status[4], 1299 fdc->sc_status[5]); 1300 } 1301 1302 bp->b_flags |= B_ERROR; 1303 bp->b_error = EIO; 1304 fdfinish(fd, bp); 1305 } 1306 fdc->sc_errors++; 1307 } 1308 1309 int 1310 fdioctl(dev, cmd, addr, flag, p) 1311 dev_t dev; 1312 u_long cmd; 1313 caddr_t addr; 1314 int flag; 1315 struct proc *p; 1316 { 1317 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1318 struct fdformat_parms *form_parms; 1319 struct fdformat_cmd *form_cmd; 1320 struct ne7_fd_formb *fd_formb; 1321 struct disklabel buffer; 1322 int error; 1323 unsigned int scratch; 1324 int il[FD_MAX_NSEC + 1]; 1325 register int i, j; 1326 #ifdef __HAVE_OLD_DISKLABEL 1327 struct disklabel newlabel; 1328 #endif 1329 1330 switch (cmd) { 1331 case DIOCGDINFO: 1332 #ifdef __HAVE_OLD_DISKLABEL 1333 case ODIOCGDINFO: 1334 #endif 1335 memset(&buffer, 0, sizeof(buffer)); 1336 1337 buffer.d_secpercyl = fd->sc_type->seccyl; 1338 buffer.d_type = DTYPE_FLOPPY; 1339 buffer.d_secsize = FDC_BSIZE; 1340 1341 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1342 return EINVAL; 1343 1344 #ifdef __HAVE_OLD_DISKLABEL 1345 if (cmd == ODIOCGDINFO) { 1346 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1347 return ENOTTY; 1348 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1349 } else 1350 #endif 1351 *(struct disklabel *)addr = buffer; 1352 return 0; 1353 1354 case DIOCWLABEL: 1355 if ((flag & FWRITE) == 0) 1356 return EBADF; 1357 /* XXX do something */ 1358 return 0; 1359 1360 case DIOCWDINFO: 1361 #ifdef __HAVE_OLD_DISKLABEL 1362 case ODIOCWDINFO: 1363 #endif 1364 { 1365 struct disklabel *lp; 1366 1367 if ((flag & FWRITE) == 0) 1368 return EBADF; 1369 #ifdef __HAVE_OLD_DISKLABEL 1370 if (cmd == ODIOCWDINFO) { 1371 memset(&newlabel, 0, sizeof newlabel); 1372 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1373 lp = &newlabel; 1374 } else 1375 #endif 1376 lp = (struct disklabel *)addr; 1377 1378 error = setdisklabel(&buffer, lp, 0, NULL); 1379 if (error) 1380 return error; 1381 1382 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1383 return error; 1384 } 1385 1386 case FDIOCGETFORMAT: 1387 form_parms = (struct fdformat_parms *)addr; 1388 form_parms->fdformat_version = FDFORMAT_VERSION; 1389 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1390 form_parms->ncyl = fd->sc_type->cyls; 1391 form_parms->nspt = fd->sc_type->sectrac; 1392 form_parms->ntrk = fd->sc_type->heads; 1393 form_parms->stepspercyl = fd->sc_type->step; 1394 form_parms->gaplen = fd->sc_type->gap2; 1395 form_parms->fillbyte = fd->sc_type->fillbyte; 1396 form_parms->interleave = fd->sc_type->interleave; 1397 switch (fd->sc_type->rate) { 1398 case FDC_500KBPS: 1399 form_parms->xfer_rate = 500 * 1024; 1400 break; 1401 case FDC_300KBPS: 1402 form_parms->xfer_rate = 300 * 1024; 1403 break; 1404 case FDC_250KBPS: 1405 form_parms->xfer_rate = 250 * 1024; 1406 break; 1407 default: 1408 return EINVAL; 1409 } 1410 return 0; 1411 1412 case FDIOCSETFORMAT: 1413 if((flag & FWRITE) == 0) 1414 return EBADF; /* must be opened for writing */ 1415 form_parms = (struct fdformat_parms *)addr; 1416 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1417 return EINVAL; /* wrong version of formatting prog */ 1418 1419 scratch = form_parms->nbps >> 7; 1420 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1421 scratch & ~(1 << (ffs(scratch)-1))) 1422 /* not a power-of-two multiple of 128 */ 1423 return EINVAL; 1424 1425 switch (form_parms->xfer_rate) { 1426 case 500 * 1024: 1427 fd->sc_type->rate = FDC_500KBPS; 1428 break; 1429 case 300 * 1024: 1430 fd->sc_type->rate = FDC_300KBPS; 1431 break; 1432 case 250 * 1024: 1433 fd->sc_type->rate = FDC_250KBPS; 1434 break; 1435 default: 1436 return EINVAL; 1437 } 1438 1439 if (form_parms->nspt > FD_MAX_NSEC || 1440 form_parms->fillbyte > 0xff || 1441 form_parms->interleave > 0xff) 1442 return EINVAL; 1443 fd->sc_type->sectrac = form_parms->nspt; 1444 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1445 return EINVAL; 1446 fd->sc_type->heads = form_parms->ntrk; 1447 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1448 fd->sc_type->secsize = ffs(scratch)-1; 1449 fd->sc_type->gap2 = form_parms->gaplen; 1450 fd->sc_type->cyls = form_parms->ncyl; 1451 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1452 form_parms->nbps / DEV_BSIZE; 1453 fd->sc_type->step = form_parms->stepspercyl; 1454 fd->sc_type->fillbyte = form_parms->fillbyte; 1455 fd->sc_type->interleave = form_parms->interleave; 1456 return 0; 1457 1458 case FDIOCFORMAT_TRACK: 1459 if((flag & FWRITE) == 0) 1460 return EBADF; /* must be opened for writing */ 1461 form_cmd = (struct fdformat_cmd *)addr; 1462 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1463 return EINVAL; /* wrong version of formatting prog */ 1464 1465 if (form_cmd->head >= fd->sc_type->heads || 1466 form_cmd->cylinder >= fd->sc_type->cyls) { 1467 return EINVAL; 1468 } 1469 1470 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1471 M_TEMP, M_NOWAIT); 1472 if (fd_formb == 0) 1473 return ENOMEM; 1474 1475 fd_formb->head = form_cmd->head; 1476 fd_formb->cyl = form_cmd->cylinder; 1477 fd_formb->transfer_rate = fd->sc_type->rate; 1478 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1479 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1480 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1481 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1482 1483 memset(il, 0, sizeof il); 1484 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1485 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1486 j++; 1487 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1488 j += fd->sc_type->interleave; 1489 } 1490 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1491 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1492 fd_formb->fd_formb_headno(i) = form_cmd->head; 1493 fd_formb->fd_formb_secno(i) = il[i+1]; 1494 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1495 } 1496 1497 error = fdformat(dev, fd_formb, p); 1498 free(fd_formb, M_TEMP); 1499 return error; 1500 1501 case FDIOCGETOPTS: /* get drive options */ 1502 *(int *)addr = fd->sc_opts; 1503 return 0; 1504 1505 case FDIOCSETOPTS: /* set drive options */ 1506 fd->sc_opts = *(int *)addr; 1507 return 0; 1508 1509 default: 1510 return ENOTTY; 1511 } 1512 1513 #ifdef DIAGNOSTIC 1514 panic("fdioctl: impossible"); 1515 #endif 1516 } 1517 1518 int 1519 fdformat(dev, finfo, p) 1520 dev_t dev; 1521 struct ne7_fd_formb *finfo; 1522 struct proc *p; 1523 { 1524 int rv = 0, s; 1525 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1526 struct fd_type *type = fd->sc_type; 1527 struct buf *bp; 1528 1529 /* set up a buffer header for fdstrategy() */ 1530 s = splbio(); 1531 bp = (struct buf *)pool_get(&bufpool, PR_NOWAIT); 1532 splx(s); 1533 if (bp == NULL) 1534 return ENOBUFS; 1535 1536 memset((void *)bp, 0, sizeof(struct buf)); 1537 BUF_INIT(bp); 1538 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1539 bp->b_proc = p; 1540 bp->b_dev = dev; 1541 1542 /* 1543 * calculate a fake blkno, so fdstrategy() would initiate a 1544 * seek to the requested cylinder 1545 */ 1546 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1547 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1548 1549 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1550 bp->b_data = (caddr_t)finfo; 1551 1552 #ifdef DEBUG 1553 printf("fdformat: blkno %" PRIx64 " count %x\n", 1554 bp->b_blkno, bp->b_bcount); 1555 #endif 1556 1557 /* now do the format */ 1558 fdstrategy(bp); 1559 1560 /* ...and wait for it to complete */ 1561 rv = biowait(bp); 1562 s = splbio(); 1563 pool_put(&bufpool, bp); 1564 splx(s); 1565 return rv; 1566 } 1567 1568 /* 1569 * Mountroot hook: prompt the user to enter the root file system 1570 * floppy. 1571 */ 1572 void 1573 fd_mountroot_hook(dev) 1574 struct device *dev; 1575 { 1576 int c; 1577 1578 printf("Insert filesystem floppy and press return."); 1579 cnpollc(1); 1580 for (;;) { 1581 c = cngetc(); 1582 if ((c == '\r') || (c == '\n')) { 1583 printf("\n"); 1584 break; 1585 } 1586 } 1587 cnpollc(0); 1588 } 1589
Indexes created Sun Sep 28 12:09:53 GMT 2025