fd.c revision 1.46
1 /* $NetBSD: fd.c,v 1.46 2003/08/07 16:31:06 agc 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 1.46 2003/08/07 16:31:06 agc 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 */ 414 delay(2000000); 415 out_fdc(iot, ioh, NE7CMD_SENSEI); 416 n = fdcresult(fdc); 417 #ifdef FD_DEBUG 418 { 419 int i; 420 printf("fdprobe: status"); 421 for (i = 0; i < n; i++) 422 printf(" %x", fdc->sc_status[i]); 423 printf("\n"); 424 } 425 #endif 426 /* turn off motor */ 427 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 428 429 #if defined(bebox) /* XXX What is this about? --thorpej (at) netbsd.org */ 430 if (n != 2 || (fdc->sc_status[1] != 0)) 431 return 0; 432 #else 433 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 434 return 0; 435 #endif /* bebox */ 436 437 return 1; 438 } 439 440 /* 441 * Controller is working, and drive responded. Attach it. 442 */ 443 void 444 fdattach(parent, self, aux) 445 struct device *parent, *self; 446 void *aux; 447 { 448 struct fdc_softc *fdc = (void *)parent; 449 struct fd_softc *fd = (void *)self; 450 struct fdc_attach_args *fa = aux; 451 const struct fd_type *type = fa->fa_deftype; 452 int drive = fa->fa_drive; 453 454 callout_init(&fd->sc_motoron_ch); 455 callout_init(&fd->sc_motoroff_ch); 456 457 /* XXX Allow `flags' to override device type? */ 458 459 if (type) 460 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 461 type->cyls, type->heads, type->sectrac); 462 else 463 printf(": density unknown\n"); 464 465 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 466 fd->sc_cylin = -1; 467 fd->sc_drive = drive; 468 fd->sc_deftype = type; 469 fdc->sc_fd[drive] = fd; 470 471 /* 472 * Initialize and attach the disk structure. 473 */ 474 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 475 fd->sc_dk.dk_driver = &fddkdriver; 476 disk_attach(&fd->sc_dk); 477 478 /* 479 * Establish a mountroot hook. 480 */ 481 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 482 483 /* Needed to power off if the motor is on when we halt. */ 484 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 485 486 #if NRND > 0 487 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 488 RND_TYPE_DISK, 0); 489 #endif 490 } 491 492 #if defined(i386) 493 /* 494 * Translate nvram type into internal data structure. Return NULL for 495 * none/unknown/unusable. 496 */ 497 const struct fd_type * 498 fd_nvtotype(fdc, nvraminfo, drive) 499 char *fdc; 500 int nvraminfo, drive; 501 { 502 int type; 503 504 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 505 switch (type) { 506 case NVRAM_DISKETTE_NONE: 507 return NULL; 508 case NVRAM_DISKETTE_12M: 509 return &fd_types[1]; 510 case NVRAM_DISKETTE_TYPE5: 511 case NVRAM_DISKETTE_TYPE6: 512 /* XXX We really ought to handle 2.88MB format. */ 513 case NVRAM_DISKETTE_144M: 514 #if NMCA > 0 515 if (MCA_system) 516 return &mca_fd_types[0]; 517 else 518 #endif /* NMCA > 0 */ 519 return &fd_types[0]; 520 case NVRAM_DISKETTE_360K: 521 return &fd_types[3]; 522 case NVRAM_DISKETTE_720K: 523 #if NMCA > 0 524 if (MCA_system) 525 return &mca_fd_types[1]; 526 else 527 #endif /* NMCA > 0 */ 528 return &fd_types[4]; 529 default: 530 printf("%s: drive %d: unknown device type 0x%x\n", 531 fdc, drive, type); 532 return NULL; 533 } 534 } 535 #endif /* i386 */ 536 537 __inline const struct fd_type * 538 fd_dev_to_type(fd, dev) 539 struct fd_softc *fd; 540 dev_t dev; 541 { 542 u_int type = FDTYPE(dev); 543 544 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 545 return NULL; 546 return type ? &fd_types[type - 1] : fd->sc_deftype; 547 } 548 549 void 550 fdstrategy(bp) 551 register struct buf *bp; /* IO operation to perform */ 552 { 553 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 554 int sz; 555 int s; 556 557 /* Valid unit, controller, and request? */ 558 if (bp->b_blkno < 0 || 559 ((bp->b_bcount % FDC_BSIZE) != 0 && 560 (bp->b_flags & B_FORMAT) == 0)) { 561 bp->b_error = EINVAL; 562 goto bad; 563 } 564 565 /* If it's a null transfer, return immediately. */ 566 if (bp->b_bcount == 0) 567 goto done; 568 569 sz = howmany(bp->b_bcount, FDC_BSIZE); 570 571 if (bp->b_blkno + sz > fd->sc_type->size) { 572 sz = fd->sc_type->size - bp->b_blkno; 573 if (sz == 0) { 574 /* If exactly at end of disk, return EOF. */ 575 goto done; 576 } 577 if (sz < 0) { 578 /* If past end of disk, return EINVAL. */ 579 bp->b_error = EINVAL; 580 goto bad; 581 } 582 /* Otherwise, truncate request. */ 583 bp->b_bcount = sz << DEV_BSHIFT; 584 } 585 586 bp->b_rawblkno = bp->b_blkno; 587 bp->b_cylinder = 588 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 589 590 #ifdef FD_DEBUG 591 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld sz %d\n", 592 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 593 #endif 594 595 /* Queue transfer on drive, activate drive and controller if idle. */ 596 s = splbio(); 597 BUFQ_PUT(&fd->sc_q, bp); 598 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 599 if (fd->sc_active == 0) 600 fdstart(fd); 601 #ifdef DIAGNOSTIC 602 else { 603 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 604 if (fdc->sc_state == DEVIDLE) { 605 printf("fdstrategy: controller inactive\n"); 606 fdcstart(fdc); 607 } 608 } 609 #endif 610 splx(s); 611 return; 612 613 bad: 614 bp->b_flags |= B_ERROR; 615 done: 616 /* Toss transfer; we're done early. */ 617 bp->b_resid = bp->b_bcount; 618 biodone(bp); 619 } 620 621 void 622 fdstart(fd) 623 struct fd_softc *fd; 624 { 625 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 626 int active = !TAILQ_EMPTY(&fdc->sc_drives); 627 628 /* Link into controller queue. */ 629 fd->sc_active = 1; 630 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 631 632 /* If controller not already active, start it. */ 633 if (!active) 634 fdcstart(fdc); 635 } 636 637 void 638 fdfinish(fd, bp) 639 struct fd_softc *fd; 640 struct buf *bp; 641 { 642 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 643 644 /* 645 * Move this drive to the end of the queue to give others a `fair' 646 * chance. We only force a switch if N operations are completed while 647 * another drive is waiting to be serviced, since there is a long motor 648 * startup delay whenever we switch. 649 */ 650 (void)BUFQ_GET(&fd->sc_q); 651 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 652 fd->sc_ops = 0; 653 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 654 if (BUFQ_PEEK(&fd->sc_q) != NULL) 655 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 656 else 657 fd->sc_active = 0; 658 } 659 bp->b_resid = fd->sc_bcount; 660 fd->sc_skip = 0; 661 662 #if NRND > 0 663 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 664 #endif 665 666 biodone(bp); 667 /* turn off motor 5s from now */ 668 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 669 fdc->sc_state = DEVIDLE; 670 } 671 672 int 673 fdread(dev, uio, flags) 674 dev_t dev; 675 struct uio *uio; 676 int flags; 677 { 678 679 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 680 } 681 682 int 683 fdwrite(dev, uio, flags) 684 dev_t dev; 685 struct uio *uio; 686 int flags; 687 { 688 689 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 690 } 691 692 void 693 fd_set_motor(fdc, reset) 694 struct fdc_softc *fdc; 695 int reset; 696 { 697 struct fd_softc *fd; 698 u_char status; 699 int n; 700 701 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 702 status = fd->sc_drive; 703 else 704 status = 0; 705 if (!reset) 706 status |= FDO_FRST | FDO_FDMAEN; 707 for (n = 0; n < 4; n++) 708 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 709 status |= FDO_MOEN(n); 710 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 711 } 712 713 void 714 fd_motor_off(arg) 715 void *arg; 716 { 717 struct fd_softc *fd = arg; 718 int s; 719 720 s = splbio(); 721 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 722 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 723 splx(s); 724 } 725 726 void 727 fd_motor_on(arg) 728 void *arg; 729 { 730 struct fd_softc *fd = arg; 731 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 732 int s; 733 734 s = splbio(); 735 fd->sc_flags &= ~FD_MOTOR_WAIT; 736 if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT)) 737 (void) fdcintr(fdc); 738 splx(s); 739 } 740 741 int 742 fdcresult(fdc) 743 struct fdc_softc *fdc; 744 { 745 bus_space_tag_t iot = fdc->sc_iot; 746 bus_space_handle_t ioh = fdc->sc_ioh; 747 u_char i; 748 u_int j = 100000, 749 n = 0; 750 751 for (; j; j--) { 752 i = bus_space_read_1(iot, ioh, fdsts) & 753 (NE7_DIO | NE7_RQM | NE7_CB); 754 if (i == NE7_RQM) 755 return n; 756 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 757 if (n >= sizeof(fdc->sc_status)) { 758 log(LOG_ERR, "fdcresult: overrun\n"); 759 return -1; 760 } 761 fdc->sc_status[n++] = 762 bus_space_read_1(iot, ioh, fddata); 763 } 764 delay(10); 765 } 766 log(LOG_ERR, "fdcresult: timeout\n"); 767 return -1; 768 } 769 770 int 771 out_fdc(iot, ioh, x) 772 bus_space_tag_t iot; 773 bus_space_handle_t ioh; 774 u_char x; 775 { 776 int i = 100000; 777 778 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_DIO) && i-- > 0); 779 if (i <= 0) 780 return -1; 781 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0); 782 if (i <= 0) 783 return -1; 784 bus_space_write_1(iot, ioh, fddata, x); 785 return 0; 786 } 787 788 int 789 fdopen(dev, flags, mode, p) 790 dev_t dev; 791 int flags; 792 int mode; 793 struct proc *p; 794 { 795 struct fd_softc *fd; 796 const struct fd_type *type; 797 798 fd = device_lookup(&fd_cd, FDUNIT(dev)); 799 if (fd == NULL) 800 return (ENXIO); 801 802 type = fd_dev_to_type(fd, dev); 803 if (type == NULL) 804 return ENXIO; 805 806 if ((fd->sc_flags & FD_OPEN) != 0 && 807 memcmp(fd->sc_type, type, sizeof(*type))) 808 return EBUSY; 809 810 fd->sc_type_copy = *type; 811 fd->sc_type = &fd->sc_type_copy; 812 fd->sc_cylin = -1; 813 fd->sc_flags |= FD_OPEN; 814 815 return 0; 816 } 817 818 int 819 fdclose(dev, flags, mode, p) 820 dev_t dev; 821 int flags; 822 int mode; 823 struct proc *p; 824 { 825 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 826 827 fd->sc_flags &= ~FD_OPEN; 828 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 829 return 0; 830 } 831 832 void 833 fdcstart(fdc) 834 struct fdc_softc *fdc; 835 { 836 837 #ifdef DIAGNOSTIC 838 /* only got here if controller's drive queue was inactive; should 839 be in idle state */ 840 if (fdc->sc_state != DEVIDLE) { 841 printf("fdcstart: not idle\n"); 842 return; 843 } 844 #endif 845 (void) fdcintr(fdc); 846 } 847 848 void 849 fdcstatus(dv, n, s) 850 struct device *dv; 851 int n; 852 char *s; 853 { 854 struct fdc_softc *fdc = (void *)dv->dv_parent; 855 char bits[64]; 856 857 if (n == 0) { 858 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 859 (void) fdcresult(fdc); 860 n = 2; 861 } 862 863 printf("%s: %s", dv->dv_xname, s); 864 865 switch (n) { 866 case 0: 867 printf("\n"); 868 break; 869 case 2: 870 printf(" (st0 %s cyl %d)\n", 871 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 872 bits, sizeof(bits)), fdc->sc_status[1]); 873 break; 874 case 7: 875 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 876 NE7_ST0BITS, bits, sizeof(bits))); 877 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 878 NE7_ST1BITS, bits, sizeof(bits))); 879 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 880 NE7_ST2BITS, bits, sizeof(bits))); 881 printf(" cyl %d head %d sec %d)\n", 882 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 883 break; 884 #ifdef DIAGNOSTIC 885 default: 886 printf("\nfdcstatus: weird size"); 887 break; 888 #endif 889 } 890 } 891 892 void 893 fdctimeout(arg) 894 void *arg; 895 { 896 struct fdc_softc *fdc = arg; 897 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 898 int s; 899 900 s = splbio(); 901 #ifdef DEBUG 902 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 903 #endif 904 fdcstatus(&fd->sc_dev, 0, "timeout"); 905 906 if (BUFQ_PEEK(&fd->sc_q) != NULL) 907 fdc->sc_state++; 908 else 909 fdc->sc_state = DEVIDLE; 910 911 (void) fdcintr(fdc); 912 splx(s); 913 } 914 915 void 916 fdcpseudointr(arg) 917 void *arg; 918 { 919 int s; 920 921 /* Just ensure it has the right spl. */ 922 s = splbio(); 923 (void) fdcintr(arg); 924 splx(s); 925 } 926 927 int 928 fdcintr(arg) 929 void *arg; 930 { 931 struct fdc_softc *fdc = arg; 932 #define st0 fdc->sc_status[0] 933 #define cyl fdc->sc_status[1] 934 struct fd_softc *fd; 935 struct buf *bp; 936 bus_space_tag_t iot = fdc->sc_iot; 937 bus_space_handle_t ioh = fdc->sc_ioh; 938 int read, head, sec, i, nblks; 939 struct fd_type *type; 940 struct ne7_fd_formb *finfo = NULL; 941 942 loop: 943 /* Is there a drive for the controller to do a transfer with? */ 944 fd = TAILQ_FIRST(&fdc->sc_drives); 945 if (fd == NULL) { 946 fdc->sc_state = DEVIDLE; 947 return 1; 948 } 949 950 /* Is there a transfer to this drive? If not, deactivate drive. */ 951 bp = BUFQ_PEEK(&fd->sc_q); 952 if (bp == NULL) { 953 fd->sc_ops = 0; 954 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 955 fd->sc_active = 0; 956 goto loop; 957 } 958 959 if (bp->b_flags & B_FORMAT) 960 finfo = (struct ne7_fd_formb *)bp->b_data; 961 962 switch (fdc->sc_state) { 963 case DEVIDLE: 964 fdc->sc_errors = 0; 965 fd->sc_skip = 0; 966 fd->sc_bcount = bp->b_bcount; 967 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 968 callout_stop(&fd->sc_motoroff_ch); 969 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 970 fdc->sc_state = MOTORWAIT; 971 return 1; 972 } 973 if ((fd->sc_flags & FD_MOTOR) == 0) { 974 /* Turn on the motor, being careful about pairing. */ 975 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 976 if (ofd && ofd->sc_flags & FD_MOTOR) { 977 callout_stop(&ofd->sc_motoroff_ch); 978 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 979 } 980 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 981 fd_set_motor(fdc, 0); 982 fdc->sc_state = MOTORWAIT; 983 /* Allow .25s for motor to stabilize. */ 984 callout_reset(&fd->sc_motoron_ch, hz / 4, 985 fd_motor_on, fd); 986 return 1; 987 } 988 /* Make sure the right drive is selected. */ 989 fd_set_motor(fdc, 0); 990 991 /* fall through */ 992 case DOSEEK: 993 doseek: 994 if (fd->sc_cylin == bp->b_cylinder) 995 goto doio; 996 997 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 998 out_fdc(iot, ioh, fd->sc_type->steprate); 999 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1000 1001 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1002 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1003 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1004 1005 fd->sc_cylin = -1; 1006 fdc->sc_state = SEEKWAIT; 1007 1008 fd->sc_dk.dk_seek++; 1009 disk_busy(&fd->sc_dk); 1010 1011 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1012 return 1; 1013 1014 case DOIO: 1015 doio: 1016 type = fd->sc_type; 1017 if (finfo) 1018 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1019 (char *)finfo; 1020 sec = fd->sc_blkno % type->seccyl; 1021 nblks = type->seccyl - sec; 1022 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1023 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1024 fd->sc_nblks = nblks; 1025 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1026 head = sec / type->sectrac; 1027 sec -= head * type->sectrac; 1028 #ifdef DIAGNOSTIC 1029 { 1030 int block; 1031 block = (fd->sc_cylin * type->heads + head) 1032 * type->sectrac + sec; 1033 if (block != fd->sc_blkno) { 1034 printf("fdcintr: block %d != blkno " 1035 "%" PRId64 "\n", block, fd->sc_blkno); 1036 #ifdef DDB 1037 Debugger(); 1038 #endif 1039 } 1040 } 1041 #endif 1042 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1043 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1044 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1045 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1046 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1047 #ifdef FD_DEBUG 1048 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1049 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1050 head, sec, nblks); 1051 #endif 1052 if (finfo) { 1053 /* formatting */ 1054 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1055 fdc->sc_errors = 4; 1056 fdcretry(fdc); 1057 goto loop; 1058 } 1059 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1060 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1061 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1062 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1063 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1064 } else { 1065 if (read) 1066 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1067 else 1068 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1069 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1070 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1071 out_fdc(iot, ioh, head); 1072 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1073 out_fdc(iot, ioh, type->secsize);/* sector size */ 1074 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1075 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1076 out_fdc(iot, ioh, type->datalen);/* data length */ 1077 } 1078 fdc->sc_state = IOCOMPLETE; 1079 1080 disk_busy(&fd->sc_dk); 1081 1082 /* allow 2 seconds for operation */ 1083 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1084 return 1; /* will return later */ 1085 1086 case SEEKWAIT: 1087 callout_stop(&fdc->sc_timo_ch); 1088 fdc->sc_state = SEEKCOMPLETE; 1089 /* allow 1/50 second for heads to settle */ 1090 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1091 return 1; 1092 1093 case SEEKCOMPLETE: 1094 /* no data on seek */ 1095 disk_unbusy(&fd->sc_dk, 0, 0); 1096 1097 /* Make sure seek really happened. */ 1098 out_fdc(iot, ioh, NE7CMD_SENSEI); 1099 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1100 cyl != bp->b_cylinder * fd->sc_type->step) { 1101 #ifdef FD_DEBUG 1102 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1103 #endif 1104 fdcretry(fdc); 1105 goto loop; 1106 } 1107 fd->sc_cylin = bp->b_cylinder; 1108 goto doio; 1109 1110 case IOTIMEDOUT: 1111 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1112 case SEEKTIMEDOUT: 1113 case RECALTIMEDOUT: 1114 case RESETTIMEDOUT: 1115 fdcretry(fdc); 1116 goto loop; 1117 1118 case IOCOMPLETE: /* IO DONE, post-analyze */ 1119 callout_stop(&fdc->sc_timo_ch); 1120 1121 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1122 (bp->b_flags & B_READ)); 1123 1124 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1125 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1126 #ifdef FD_DEBUG 1127 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1128 "read failed" : "write failed"); 1129 printf("blkno %d nblks %d\n", 1130 fd->sc_blkno, fd->sc_nblks); 1131 #endif 1132 fdcretry(fdc); 1133 goto loop; 1134 } 1135 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1136 if (fdc->sc_errors) { 1137 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1138 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1139 printf("\n"); 1140 fdc->sc_errors = 0; 1141 } 1142 fd->sc_blkno += fd->sc_nblks; 1143 fd->sc_skip += fd->sc_nbytes; 1144 fd->sc_bcount -= fd->sc_nbytes; 1145 if (!finfo && fd->sc_bcount > 0) { 1146 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1147 goto doseek; 1148 } 1149 fdfinish(fd, bp); 1150 goto loop; 1151 1152 case DORESET: 1153 /* try a reset, keep motor on */ 1154 fd_set_motor(fdc, 1); 1155 delay(100); 1156 fd_set_motor(fdc, 0); 1157 fdc->sc_state = RESETCOMPLETE; 1158 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1159 return 1; /* will return later */ 1160 1161 case RESETCOMPLETE: 1162 callout_stop(&fdc->sc_timo_ch); 1163 /* clear the controller output buffer */ 1164 for (i = 0; i < 4; i++) { 1165 out_fdc(iot, ioh, NE7CMD_SENSEI); 1166 (void) fdcresult(fdc); 1167 } 1168 1169 /* fall through */ 1170 case DORECAL: 1171 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1172 out_fdc(iot, ioh, fd->sc_drive); 1173 fdc->sc_state = RECALWAIT; 1174 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1175 return 1; /* will return later */ 1176 1177 case RECALWAIT: 1178 callout_stop(&fdc->sc_timo_ch); 1179 fdc->sc_state = RECALCOMPLETE; 1180 /* allow 1/30 second for heads to settle */ 1181 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1182 return 1; /* will return later */ 1183 1184 case RECALCOMPLETE: 1185 out_fdc(iot, ioh, NE7CMD_SENSEI); 1186 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1187 #ifdef FD_DEBUG 1188 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1189 #endif 1190 fdcretry(fdc); 1191 goto loop; 1192 } 1193 fd->sc_cylin = 0; 1194 goto doseek; 1195 1196 case MOTORWAIT: 1197 if (fd->sc_flags & FD_MOTOR_WAIT) 1198 return 1; /* time's not up yet */ 1199 goto doseek; 1200 1201 default: 1202 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1203 return 1; 1204 } 1205 #ifdef DIAGNOSTIC 1206 panic("fdcintr: impossible"); 1207 #endif 1208 #undef st0 1209 #undef cyl 1210 } 1211 1212 void 1213 fdcretry(fdc) 1214 struct fdc_softc *fdc; 1215 { 1216 char bits[64]; 1217 struct fd_softc *fd; 1218 struct buf *bp; 1219 1220 fd = TAILQ_FIRST(&fdc->sc_drives); 1221 bp = BUFQ_PEEK(&fd->sc_q); 1222 1223 if (fd->sc_opts & FDOPT_NORETRY) 1224 goto fail; 1225 switch (fdc->sc_errors) { 1226 case 0: 1227 /* try again */ 1228 fdc->sc_state = DOSEEK; 1229 break; 1230 1231 case 1: case 2: case 3: 1232 /* didn't work; try recalibrating */ 1233 fdc->sc_state = DORECAL; 1234 break; 1235 1236 case 4: 1237 /* still no go; reset the bastard */ 1238 fdc->sc_state = DORESET; 1239 break; 1240 1241 default: 1242 fail: 1243 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1244 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1245 fd->sc_skip / FDC_BSIZE, 1246 (struct disklabel *)NULL); 1247 1248 printf(" (st0 %s", 1249 bitmask_snprintf(fdc->sc_status[0], 1250 NE7_ST0BITS, bits, 1251 sizeof(bits))); 1252 printf(" st1 %s", 1253 bitmask_snprintf(fdc->sc_status[1], 1254 NE7_ST1BITS, bits, 1255 sizeof(bits))); 1256 printf(" st2 %s", 1257 bitmask_snprintf(fdc->sc_status[2], 1258 NE7_ST2BITS, bits, 1259 sizeof(bits))); 1260 printf(" cyl %d head %d sec %d)\n", 1261 fdc->sc_status[3], 1262 fdc->sc_status[4], 1263 fdc->sc_status[5]); 1264 } 1265 1266 bp->b_flags |= B_ERROR; 1267 bp->b_error = EIO; 1268 fdfinish(fd, bp); 1269 } 1270 fdc->sc_errors++; 1271 } 1272 1273 int 1274 fdioctl(dev, cmd, addr, flag, p) 1275 dev_t dev; 1276 u_long cmd; 1277 caddr_t addr; 1278 int flag; 1279 struct proc *p; 1280 { 1281 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1282 struct fdformat_parms *form_parms; 1283 struct fdformat_cmd *form_cmd; 1284 struct ne7_fd_formb *fd_formb; 1285 struct disklabel buffer; 1286 int error; 1287 unsigned int scratch; 1288 int il[FD_MAX_NSEC + 1]; 1289 register int i, j; 1290 #ifdef __HAVE_OLD_DISKLABEL 1291 struct disklabel newlabel; 1292 #endif 1293 1294 switch (cmd) { 1295 case DIOCGDINFO: 1296 #ifdef __HAVE_OLD_DISKLABEL 1297 case ODIOCGDINFO: 1298 #endif 1299 memset(&buffer, 0, sizeof(buffer)); 1300 1301 buffer.d_secpercyl = fd->sc_type->seccyl; 1302 buffer.d_type = DTYPE_FLOPPY; 1303 buffer.d_secsize = FDC_BSIZE; 1304 1305 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1306 return EINVAL; 1307 1308 #ifdef __HAVE_OLD_DISKLABEL 1309 if (cmd == ODIOCGDINFO) { 1310 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1311 return ENOTTY; 1312 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1313 } else 1314 #endif 1315 *(struct disklabel *)addr = buffer; 1316 return 0; 1317 1318 case DIOCWLABEL: 1319 if ((flag & FWRITE) == 0) 1320 return EBADF; 1321 /* XXX do something */ 1322 return 0; 1323 1324 case DIOCWDINFO: 1325 #ifdef __HAVE_OLD_DISKLABEL 1326 case ODIOCWDINFO: 1327 #endif 1328 { 1329 struct disklabel *lp; 1330 1331 if ((flag & FWRITE) == 0) 1332 return EBADF; 1333 #ifdef __HAVE_OLD_DISKLABEL 1334 if (cmd == ODIOCWDINFO) { 1335 memset(&newlabel, 0, sizeof newlabel); 1336 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1337 lp = &newlabel; 1338 } else 1339 #endif 1340 lp = (struct disklabel *)addr; 1341 1342 error = setdisklabel(&buffer, lp, 0, NULL); 1343 if (error) 1344 return error; 1345 1346 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1347 return error; 1348 } 1349 1350 case FDIOCGETFORMAT: 1351 form_parms = (struct fdformat_parms *)addr; 1352 form_parms->fdformat_version = FDFORMAT_VERSION; 1353 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1354 form_parms->ncyl = fd->sc_type->cyls; 1355 form_parms->nspt = fd->sc_type->sectrac; 1356 form_parms->ntrk = fd->sc_type->heads; 1357 form_parms->stepspercyl = fd->sc_type->step; 1358 form_parms->gaplen = fd->sc_type->gap2; 1359 form_parms->fillbyte = fd->sc_type->fillbyte; 1360 form_parms->interleave = fd->sc_type->interleave; 1361 switch (fd->sc_type->rate) { 1362 case FDC_500KBPS: 1363 form_parms->xfer_rate = 500 * 1024; 1364 break; 1365 case FDC_300KBPS: 1366 form_parms->xfer_rate = 300 * 1024; 1367 break; 1368 case FDC_250KBPS: 1369 form_parms->xfer_rate = 250 * 1024; 1370 break; 1371 default: 1372 return EINVAL; 1373 } 1374 return 0; 1375 1376 case FDIOCSETFORMAT: 1377 if((flag & FWRITE) == 0) 1378 return EBADF; /* must be opened for writing */ 1379 form_parms = (struct fdformat_parms *)addr; 1380 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1381 return EINVAL; /* wrong version of formatting prog */ 1382 1383 scratch = form_parms->nbps >> 7; 1384 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1385 scratch & ~(1 << (ffs(scratch)-1))) 1386 /* not a power-of-two multiple of 128 */ 1387 return EINVAL; 1388 1389 switch (form_parms->xfer_rate) { 1390 case 500 * 1024: 1391 fd->sc_type->rate = FDC_500KBPS; 1392 break; 1393 case 300 * 1024: 1394 fd->sc_type->rate = FDC_300KBPS; 1395 break; 1396 case 250 * 1024: 1397 fd->sc_type->rate = FDC_250KBPS; 1398 break; 1399 default: 1400 return EINVAL; 1401 } 1402 1403 if (form_parms->nspt > FD_MAX_NSEC || 1404 form_parms->fillbyte > 0xff || 1405 form_parms->interleave > 0xff) 1406 return EINVAL; 1407 fd->sc_type->sectrac = form_parms->nspt; 1408 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1409 return EINVAL; 1410 fd->sc_type->heads = form_parms->ntrk; 1411 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1412 fd->sc_type->secsize = ffs(scratch)-1; 1413 fd->sc_type->gap2 = form_parms->gaplen; 1414 fd->sc_type->cyls = form_parms->ncyl; 1415 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1416 form_parms->nbps / DEV_BSIZE; 1417 fd->sc_type->step = form_parms->stepspercyl; 1418 fd->sc_type->fillbyte = form_parms->fillbyte; 1419 fd->sc_type->interleave = form_parms->interleave; 1420 return 0; 1421 1422 case FDIOCFORMAT_TRACK: 1423 if((flag & FWRITE) == 0) 1424 return EBADF; /* must be opened for writing */ 1425 form_cmd = (struct fdformat_cmd *)addr; 1426 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1427 return EINVAL; /* wrong version of formatting prog */ 1428 1429 if (form_cmd->head >= fd->sc_type->heads || 1430 form_cmd->cylinder >= fd->sc_type->cyls) { 1431 return EINVAL; 1432 } 1433 1434 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1435 M_TEMP, M_NOWAIT); 1436 if (fd_formb == 0) 1437 return ENOMEM; 1438 1439 fd_formb->head = form_cmd->head; 1440 fd_formb->cyl = form_cmd->cylinder; 1441 fd_formb->transfer_rate = fd->sc_type->rate; 1442 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1443 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1444 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1445 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1446 1447 memset(il, 0, sizeof il); 1448 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1449 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1450 j++; 1451 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1452 j += fd->sc_type->interleave; 1453 } 1454 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1455 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1456 fd_formb->fd_formb_headno(i) = form_cmd->head; 1457 fd_formb->fd_formb_secno(i) = il[i+1]; 1458 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1459 } 1460 1461 error = fdformat(dev, fd_formb, p); 1462 free(fd_formb, M_TEMP); 1463 return error; 1464 1465 case FDIOCGETOPTS: /* get drive options */ 1466 *(int *)addr = fd->sc_opts; 1467 return 0; 1468 1469 case FDIOCSETOPTS: /* set drive options */ 1470 fd->sc_opts = *(int *)addr; 1471 return 0; 1472 1473 default: 1474 return ENOTTY; 1475 } 1476 1477 #ifdef DIAGNOSTIC 1478 panic("fdioctl: impossible"); 1479 #endif 1480 } 1481 1482 int 1483 fdformat(dev, finfo, p) 1484 dev_t dev; 1485 struct ne7_fd_formb *finfo; 1486 struct proc *p; 1487 { 1488 int rv = 0, s; 1489 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1490 struct fd_type *type = fd->sc_type; 1491 struct buf *bp; 1492 1493 /* set up a buffer header for fdstrategy() */ 1494 s = splbio(); 1495 bp = (struct buf *)pool_get(&bufpool, PR_NOWAIT); 1496 splx(s); 1497 if (bp == NULL) 1498 return ENOBUFS; 1499 1500 memset((void *)bp, 0, sizeof(struct buf)); 1501 BUF_INIT(bp); 1502 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1503 bp->b_proc = p; 1504 bp->b_dev = dev; 1505 1506 /* 1507 * calculate a fake blkno, so fdstrategy() would initiate a 1508 * seek to the requested cylinder 1509 */ 1510 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1511 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1512 1513 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1514 bp->b_data = (caddr_t)finfo; 1515 1516 #ifdef DEBUG 1517 printf("fdformat: blkno %" PRIx64 " count %lx\n", 1518 bp->b_blkno, bp->b_bcount); 1519 #endif 1520 1521 /* now do the format */ 1522 fdstrategy(bp); 1523 1524 /* ...and wait for it to complete */ 1525 rv = biowait(bp); 1526 s = splbio(); 1527 pool_put(&bufpool, bp); 1528 splx(s); 1529 return rv; 1530 } 1531 1532 /* 1533 * Mountroot hook: prompt the user to enter the root file system 1534 * floppy. 1535 */ 1536 void 1537 fd_mountroot_hook(dev) 1538 struct device *dev; 1539 { 1540 int c; 1541 1542 printf("Insert filesystem floppy and press return."); 1543 cnpollc(1); 1544 for (;;) { 1545 c = cngetc(); 1546 if ((c == '\r') || (c == '\n')) { 1547 printf("\n"); 1548 break; 1549 } 1550 } 1551 cnpollc(0); 1552 } 1553
Indexes created Wed Oct 15 14:09:57 GMT 2025