1 /* $NetBSD: fd.c,v 1.43 2003/06/12 14:44:37 drochner Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)fd.c 7.4 (Berkeley) 5/25/91 75 */ 76 77 /* 78 * Floppy formatting facilities merged from FreeBSD fd.c driver: 79 * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp 80 * which carries the same copyright/redistribution notice as shown above with 81 * the addition of the following statement before the "Redistribution and 82 * use ..." clause: 83 * 84 * Copyright (c) 1993, 1994 by 85 * jc@irbs.UUCP (John Capo) 86 * vak@zebub.msk.su (Serge Vakulenko) 87 * ache@astral.msk.su (Andrew A. Chernov) 88 * 89 * Copyright (c) 1993, 1994, 1995 by 90 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 91 * dufault@hda.com (Peter Dufault) 92 */ 93 94 #include <sys/cdefs.h> 95 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.43 2003/06/12 14:44:37 drochner Exp $"); 96 97 #include "rnd.h" 98 #include "opt_ddb.h" 99 100 /* 101 * XXX This driver should be properly MI'd some day, but this allows us 102 * XXX to eliminate a lot of code duplication for now. 103 */ 104 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 105 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 106 !defined(prep) && !defined(sandpoint) && !defined(x86_64) 107 #error platform not supported by this driver, yet 108 #endif 109 110 #include <sys/param.h> 111 #include <sys/systm.h> 112 #include <sys/callout.h> 113 #include <sys/kernel.h> 114 #include <sys/file.h> 115 #include <sys/ioctl.h> 116 #include <sys/device.h> 117 #include <sys/disklabel.h> 118 #include <sys/disk.h> 119 #include <sys/buf.h> 120 #include <sys/malloc.h> 121 #include <sys/uio.h> 122 #include <sys/syslog.h> 123 #include <sys/queue.h> 124 #include <sys/proc.h> 125 #include <sys/fdio.h> 126 #include <sys/conf.h> 127 #if NRND > 0 128 #include <sys/rnd.h> 129 #endif 130 131 #include <uvm/uvm_extern.h> 132 133 #include <dev/cons.h> 134 135 #include <machine/cpu.h> 136 #include <machine/bus.h> 137 138 #if defined(atari) 139 /* 140 * On the atari, it is configured as fdcisa 141 */ 142 #define FDCCF_DRIVE FDCISACF_DRIVE 143 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 144 145 #define fd_cd fdisa_cd 146 #endif /* atari */ 147 148 #include <machine/intr.h> 149 150 #include <dev/isa/isavar.h> 151 #include <dev/isa/isadmavar.h> 152 153 #include <dev/isa/fdreg.h> 154 #include <dev/isa/fdcvar.h> 155 156 #if defined(i386) 157 158 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 159 #include <i386/isa/nvram.h> 160 161 #include "mca.h" 162 #if NMCA > 0 163 #include <machine/mca_machdep.h> /* for MCA_system */ 164 #endif 165 166 #endif /* i386 */ 167 168 #include <dev/isa/fdvar.h> 169 170 #define FDUNIT(dev) (minor(dev) / 8) 171 #define FDTYPE(dev) (minor(dev) % 8) 172 173 /* XXX misuse a flag to identify format operation */ 174 #define B_FORMAT B_XXX 175 176 /* controller driver configuration */ 177 int fdprint __P((void *, const char *)); 178 179 #if NMCA > 0 180 /* MCA - specific entries */ 181 const struct fd_type mca_fd_types[] = { 182 { 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 */ 183 { 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 */ 184 }; 185 #endif /* NMCA > 0 */ 186 187 /* The order of entries in the following table is important -- BEWARE! */ 188 189 #if defined(atari) 190 const struct fd_type fd_types[] = { 191 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 192 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 193 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 194 }; 195 #else 196 const struct fd_type fd_types[] = { 197 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 198 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 199 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 200 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 201 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 202 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 203 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 204 }; 205 #endif /* defined(atari) */ 206 207 int fdprobe __P((struct device *, struct cfdata *, void *)); 208 void fdattach __P((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 __P((struct fd_softc *)); 237 int fd_get_parms __P((struct fd_softc *)); 238 void fdstart __P((struct fd_softc *)); 239 240 struct dkdriver fddkdriver = { fdstrategy }; 241 242 #if defined(i386) 243 const struct fd_type *fd_nvtotype __P((char *, int, int)); 244 #endif /* i386 */ 245 void fd_set_motor __P((struct fdc_softc *fdc, int reset)); 246 void fd_motor_off __P((void *arg)); 247 void fd_motor_on __P((void *arg)); 248 int fdcresult __P((struct fdc_softc *fdc)); 249 void fdcstart __P((struct fdc_softc *fdc)); 250 void fdcstatus __P((struct device *dv, int n, char *s)); 251 void fdctimeout __P((void *arg)); 252 void fdcpseudointr __P((void *arg)); 253 void fdcretry __P((struct fdc_softc *fdc)); 254 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 255 __inline const struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 256 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 257 258 void fd_mountroot_hook __P((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 struct fdc_attach_args fa; 292 bus_space_tag_t iot; 293 bus_space_handle_t ioh; 294 #if defined(i386) 295 int type; 296 #endif 297 298 iot = fdc->sc_iot; 299 ioh = fdc->sc_ioh; 300 callout_init(&fdc->sc_timo_ch); 301 callout_init(&fdc->sc_intr_ch); 302 303 fdc->sc_state = DEVIDLE; 304 TAILQ_INIT(&fdc->sc_drives); 305 306 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 307 308 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 309 printf("%s: can't reserve drq %d\n", 310 fdc->sc_dev.dv_xname, fdc->sc_drq); 311 return; 312 } 313 314 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 315 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 316 printf("%s: can't set up ISA DMA map\n", 317 fdc->sc_dev.dv_xname); 318 return; 319 } 320 321 /* 322 * Reset the controller to get it into a known state. Not all 323 * probes necessarily need do this to discover the controller up 324 * front, so don't assume anything. 325 */ 326 327 bus_space_write_1(iot, ioh, fdout, 0); 328 delay(100); 329 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 330 331 /* see if it can handle a command */ 332 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 333 printf ("%s: can't reset controller\n", fdc->sc_dev.dv_xname); 334 return; 335 } 336 out_fdc(iot, ioh, 0xdf); 337 out_fdc(iot, ioh, 2); 338 339 #if defined(i386) 340 /* 341 * The NVRAM info only tells us about the first two disks on the 342 * `primary' floppy controller. 343 */ 344 if (fdc->sc_dev.dv_unit == 0) 345 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 346 else 347 type = -1; 348 #endif /* i386 */ 349 350 /* physical limit: four drives per controller. */ 351 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 352 if (fdc->sc_known) { 353 if (fdc->sc_present & (1 << fa.fa_drive)) { 354 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 355 config_found(&fdc->sc_dev, (void *)&fa, 356 fdprint); 357 } 358 } else { 359 #if defined(i386) 360 if (type >= 0 && fa.fa_drive < 2) 361 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 362 type, fa.fa_drive); 363 else 364 fa.fa_deftype = NULL; /* unknown */ 365 #elif defined(atari) 366 /* 367 * Atari has a different ordening, defaults to 1.44 368 */ 369 fa.fa_deftype = &fd_types[2]; 370 #else 371 /* 372 * Default to 1.44MB on Alpha and BeBox. How do we tell 373 * on these platforms? 374 */ 375 fa.fa_deftype = &fd_types[0]; 376 #endif /* i386 */ 377 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 378 } 379 } 380 } 381 382 int 383 fdprobe(parent, match, aux) 384 struct device *parent; 385 struct cfdata *match; 386 void *aux; 387 { 388 struct fdc_softc *fdc = (void *)parent; 389 struct cfdata *cf = match; 390 struct fdc_attach_args *fa = aux; 391 int drive = fa->fa_drive; 392 bus_space_tag_t iot = fdc->sc_iot; 393 bus_space_handle_t ioh = fdc->sc_ioh; 394 int n; 395 396 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 397 cf->cf_loc[FDCCF_DRIVE] != drive) 398 return 0; 399 /* 400 * XXX 401 * This is to work around some odd interactions between this driver 402 * and SMC Ethernet cards. 403 */ 404 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 405 return 0; 406 407 /* Use PNP information if available */ 408 if (fdc->sc_known) 409 return 1; 410 411 /* select drive and turn on motor */ 412 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 413 /* wait for motor to spin up */ 414 delay(250000); 415 out_fdc(iot, ioh, NE7CMD_RECAL); 416 out_fdc(iot, ioh, drive); 417 /* wait for recalibrate */ 418 delay(2000000); 419 out_fdc(iot, ioh, NE7CMD_SENSEI); 420 n = fdcresult(fdc); 421 #ifdef FD_DEBUG 422 { 423 int i; 424 printf("fdprobe: status"); 425 for (i = 0; i < n; i++) 426 printf(" %x", fdc->sc_status[i]); 427 printf("\n"); 428 } 429 #endif 430 /* turn off motor */ 431 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 432 433 #if defined(bebox) /* XXX What is this about? --thorpej@netbsd.org */ 434 if (n != 2 || (fdc->sc_status[1] != 0)) 435 return 0; 436 #else 437 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 438 return 0; 439 #endif /* bebox */ 440 441 return 1; 442 } 443 444 /* 445 * Controller is working, and drive responded. Attach it. 446 */ 447 void 448 fdattach(parent, self, aux) 449 struct device *parent, *self; 450 void *aux; 451 { 452 struct fdc_softc *fdc = (void *)parent; 453 struct fd_softc *fd = (void *)self; 454 struct fdc_attach_args *fa = aux; 455 const struct fd_type *type = fa->fa_deftype; 456 int drive = fa->fa_drive; 457 458 callout_init(&fd->sc_motoron_ch); 459 callout_init(&fd->sc_motoroff_ch); 460 461 /* XXX Allow `flags' to override device type? */ 462 463 if (type) 464 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 465 type->cyls, type->heads, type->sectrac); 466 else 467 printf(": density unknown\n"); 468 469 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 470 fd->sc_cylin = -1; 471 fd->sc_drive = drive; 472 fd->sc_deftype = type; 473 fdc->sc_fd[drive] = fd; 474 475 /* 476 * Initialize and attach the disk structure. 477 */ 478 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 479 fd->sc_dk.dk_driver = &fddkdriver; 480 disk_attach(&fd->sc_dk); 481 482 /* 483 * Establish a mountroot hook. 484 */ 485 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 486 487 /* Needed to power off if the motor is on when we halt. */ 488 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 489 490 #if NRND > 0 491 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 492 RND_TYPE_DISK, 0); 493 #endif 494 } 495 496 #if defined(i386) 497 /* 498 * Translate nvram type into internal data structure. Return NULL for 499 * none/unknown/unusable. 500 */ 501 const struct fd_type * 502 fd_nvtotype(fdc, nvraminfo, drive) 503 char *fdc; 504 int nvraminfo, drive; 505 { 506 int type; 507 508 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 509 switch (type) { 510 case NVRAM_DISKETTE_NONE: 511 return NULL; 512 case NVRAM_DISKETTE_12M: 513 return &fd_types[1]; 514 case NVRAM_DISKETTE_TYPE5: 515 case NVRAM_DISKETTE_TYPE6: 516 /* XXX We really ought to handle 2.88MB format. */ 517 case NVRAM_DISKETTE_144M: 518 #if NMCA > 0 519 if (MCA_system) 520 return &mca_fd_types[0]; 521 else 522 #endif /* NMCA > 0 */ 523 return &fd_types[0]; 524 case NVRAM_DISKETTE_360K: 525 return &fd_types[3]; 526 case NVRAM_DISKETTE_720K: 527 #if NMCA > 0 528 if (MCA_system) 529 return &mca_fd_types[1]; 530 else 531 #endif /* NMCA > 0 */ 532 return &fd_types[4]; 533 default: 534 printf("%s: drive %d: unknown device type 0x%x\n", 535 fdc, drive, type); 536 return NULL; 537 } 538 } 539 #endif /* i386 */ 540 541 __inline const struct fd_type * 542 fd_dev_to_type(fd, dev) 543 struct fd_softc *fd; 544 dev_t dev; 545 { 546 u_int type = FDTYPE(dev); 547 548 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 549 return NULL; 550 return type ? &fd_types[type - 1] : fd->sc_deftype; 551 } 552 553 void 554 fdstrategy(bp) 555 register struct buf *bp; /* IO operation to perform */ 556 { 557 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 558 int sz; 559 int s; 560 561 /* Valid unit, controller, and request? */ 562 if (bp->b_blkno < 0 || 563 ((bp->b_bcount % FDC_BSIZE) != 0 && 564 (bp->b_flags & B_FORMAT) == 0)) { 565 bp->b_error = EINVAL; 566 goto bad; 567 } 568 569 /* If it's a null transfer, return immediately. */ 570 if (bp->b_bcount == 0) 571 goto done; 572 573 sz = howmany(bp->b_bcount, FDC_BSIZE); 574 575 if (bp->b_blkno + sz > fd->sc_type->size) { 576 sz = fd->sc_type->size - bp->b_blkno; 577 if (sz == 0) { 578 /* If exactly at end of disk, return EOF. */ 579 goto done; 580 } 581 if (sz < 0) { 582 /* If past end of disk, return EINVAL. */ 583 bp->b_error = EINVAL; 584 goto bad; 585 } 586 /* Otherwise, truncate request. */ 587 bp->b_bcount = sz << DEV_BSHIFT; 588 } 589 590 bp->b_rawblkno = bp->b_blkno; 591 bp->b_cylinder = 592 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 593 594 #ifdef FD_DEBUG 595 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld sz %d\n", 596 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 597 #endif 598 599 /* Queue transfer on drive, activate drive and controller if idle. */ 600 s = splbio(); 601 BUFQ_PUT(&fd->sc_q, bp); 602 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 603 if (fd->sc_active == 0) 604 fdstart(fd); 605 #ifdef DIAGNOSTIC 606 else { 607 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 608 if (fdc->sc_state == DEVIDLE) { 609 printf("fdstrategy: controller inactive\n"); 610 fdcstart(fdc); 611 } 612 } 613 #endif 614 splx(s); 615 return; 616 617 bad: 618 bp->b_flags |= B_ERROR; 619 done: 620 /* Toss transfer; we're done early. */ 621 bp->b_resid = bp->b_bcount; 622 biodone(bp); 623 } 624 625 void 626 fdstart(fd) 627 struct fd_softc *fd; 628 { 629 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 630 int active = !TAILQ_EMPTY(&fdc->sc_drives); 631 632 /* Link into controller queue. */ 633 fd->sc_active = 1; 634 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 635 636 /* If controller not already active, start it. */ 637 if (!active) 638 fdcstart(fdc); 639 } 640 641 void 642 fdfinish(fd, bp) 643 struct fd_softc *fd; 644 struct buf *bp; 645 { 646 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 647 648 /* 649 * Move this drive to the end of the queue to give others a `fair' 650 * chance. We only force a switch if N operations are completed while 651 * another drive is waiting to be serviced, since there is a long motor 652 * startup delay whenever we switch. 653 */ 654 (void)BUFQ_GET(&fd->sc_q); 655 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 656 fd->sc_ops = 0; 657 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 658 if (BUFQ_PEEK(&fd->sc_q) != NULL) 659 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 660 else 661 fd->sc_active = 0; 662 } 663 bp->b_resid = fd->sc_bcount; 664 fd->sc_skip = 0; 665 666 #if NRND > 0 667 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 668 #endif 669 670 biodone(bp); 671 /* turn off motor 5s from now */ 672 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 673 fdc->sc_state = DEVIDLE; 674 } 675 676 int 677 fdread(dev, uio, flags) 678 dev_t dev; 679 struct uio *uio; 680 int flags; 681 { 682 683 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 684 } 685 686 int 687 fdwrite(dev, uio, flags) 688 dev_t dev; 689 struct uio *uio; 690 int flags; 691 { 692 693 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 694 } 695 696 void 697 fd_set_motor(fdc, reset) 698 struct fdc_softc *fdc; 699 int reset; 700 { 701 struct fd_softc *fd; 702 u_char status; 703 int n; 704 705 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 706 status = fd->sc_drive; 707 else 708 status = 0; 709 if (!reset) 710 status |= FDO_FRST | FDO_FDMAEN; 711 for (n = 0; n < 4; n++) 712 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 713 status |= FDO_MOEN(n); 714 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 715 } 716 717 void 718 fd_motor_off(arg) 719 void *arg; 720 { 721 struct fd_softc *fd = arg; 722 int s; 723 724 s = splbio(); 725 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 726 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 727 splx(s); 728 } 729 730 void 731 fd_motor_on(arg) 732 void *arg; 733 { 734 struct fd_softc *fd = arg; 735 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 736 int s; 737 738 s = splbio(); 739 fd->sc_flags &= ~FD_MOTOR_WAIT; 740 if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT)) 741 (void) fdcintr(fdc); 742 splx(s); 743 } 744 745 int 746 fdcresult(fdc) 747 struct fdc_softc *fdc; 748 { 749 bus_space_tag_t iot = fdc->sc_iot; 750 bus_space_handle_t ioh = fdc->sc_ioh; 751 u_char i; 752 u_int j = 100000, 753 n = 0; 754 755 for (; j; j--) { 756 i = bus_space_read_1(iot, ioh, fdsts) & 757 (NE7_DIO | NE7_RQM | NE7_CB); 758 if (i == NE7_RQM) 759 return n; 760 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 761 if (n >= sizeof(fdc->sc_status)) { 762 log(LOG_ERR, "fdcresult: overrun\n"); 763 return -1; 764 } 765 fdc->sc_status[n++] = 766 bus_space_read_1(iot, ioh, fddata); 767 } 768 delay(10); 769 } 770 log(LOG_ERR, "fdcresult: timeout\n"); 771 return -1; 772 } 773 774 int 775 out_fdc(iot, ioh, x) 776 bus_space_tag_t iot; 777 bus_space_handle_t ioh; 778 u_char x; 779 { 780 int i = 100000; 781 782 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_DIO) && i-- > 0); 783 if (i <= 0) 784 return -1; 785 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0); 786 if (i <= 0) 787 return -1; 788 bus_space_write_1(iot, ioh, fddata, x); 789 return 0; 790 } 791 792 int 793 fdopen(dev, flags, mode, p) 794 dev_t dev; 795 int flags; 796 int mode; 797 struct proc *p; 798 { 799 struct fd_softc *fd; 800 const struct fd_type *type; 801 802 fd = device_lookup(&fd_cd, FDUNIT(dev)); 803 if (fd == NULL) 804 return (ENXIO); 805 806 type = fd_dev_to_type(fd, dev); 807 if (type == NULL) 808 return ENXIO; 809 810 if ((fd->sc_flags & FD_OPEN) != 0 && 811 memcmp(fd->sc_type, type, sizeof(*type))) 812 return EBUSY; 813 814 fd->sc_type_copy = *type; 815 fd->sc_type = &fd->sc_type_copy; 816 fd->sc_cylin = -1; 817 fd->sc_flags |= FD_OPEN; 818 819 return 0; 820 } 821 822 int 823 fdclose(dev, flags, mode, p) 824 dev_t dev; 825 int flags; 826 int mode; 827 struct proc *p; 828 { 829 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 830 831 fd->sc_flags &= ~FD_OPEN; 832 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 833 return 0; 834 } 835 836 void 837 fdcstart(fdc) 838 struct fdc_softc *fdc; 839 { 840 841 #ifdef DIAGNOSTIC 842 /* only got here if controller's drive queue was inactive; should 843 be in idle state */ 844 if (fdc->sc_state != DEVIDLE) { 845 printf("fdcstart: not idle\n"); 846 return; 847 } 848 #endif 849 (void) fdcintr(fdc); 850 } 851 852 void 853 fdcstatus(dv, n, s) 854 struct device *dv; 855 int n; 856 char *s; 857 { 858 struct fdc_softc *fdc = (void *)dv->dv_parent; 859 char bits[64]; 860 861 if (n == 0) { 862 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 863 (void) fdcresult(fdc); 864 n = 2; 865 } 866 867 printf("%s: %s", dv->dv_xname, s); 868 869 switch (n) { 870 case 0: 871 printf("\n"); 872 break; 873 case 2: 874 printf(" (st0 %s cyl %d)\n", 875 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 876 bits, sizeof(bits)), fdc->sc_status[1]); 877 break; 878 case 7: 879 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 880 NE7_ST0BITS, bits, sizeof(bits))); 881 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 882 NE7_ST1BITS, bits, sizeof(bits))); 883 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 884 NE7_ST2BITS, bits, sizeof(bits))); 885 printf(" cyl %d head %d sec %d)\n", 886 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 887 break; 888 #ifdef DIAGNOSTIC 889 default: 890 printf("\nfdcstatus: weird size"); 891 break; 892 #endif 893 } 894 } 895 896 void 897 fdctimeout(arg) 898 void *arg; 899 { 900 struct fdc_softc *fdc = arg; 901 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 902 int s; 903 904 s = splbio(); 905 #ifdef DEBUG 906 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 907 #endif 908 fdcstatus(&fd->sc_dev, 0, "timeout"); 909 910 if (BUFQ_PEEK(&fd->sc_q) != NULL) 911 fdc->sc_state++; 912 else 913 fdc->sc_state = DEVIDLE; 914 915 (void) fdcintr(fdc); 916 splx(s); 917 } 918 919 void 920 fdcpseudointr(arg) 921 void *arg; 922 { 923 int s; 924 925 /* Just ensure it has the right spl. */ 926 s = splbio(); 927 (void) fdcintr(arg); 928 splx(s); 929 } 930 931 int 932 fdcintr(arg) 933 void *arg; 934 { 935 struct fdc_softc *fdc = arg; 936 #define st0 fdc->sc_status[0] 937 #define cyl fdc->sc_status[1] 938 struct fd_softc *fd; 939 struct buf *bp; 940 bus_space_tag_t iot = fdc->sc_iot; 941 bus_space_handle_t ioh = fdc->sc_ioh; 942 int read, head, sec, i, nblks; 943 struct fd_type *type; 944 struct ne7_fd_formb *finfo = NULL; 945 946 loop: 947 /* Is there a drive for the controller to do a transfer with? */ 948 fd = TAILQ_FIRST(&fdc->sc_drives); 949 if (fd == NULL) { 950 fdc->sc_state = DEVIDLE; 951 return 1; 952 } 953 954 /* Is there a transfer to this drive? If not, deactivate drive. */ 955 bp = BUFQ_PEEK(&fd->sc_q); 956 if (bp == NULL) { 957 fd->sc_ops = 0; 958 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 959 fd->sc_active = 0; 960 goto loop; 961 } 962 963 if (bp->b_flags & B_FORMAT) 964 finfo = (struct ne7_fd_formb *)bp->b_data; 965 966 switch (fdc->sc_state) { 967 case DEVIDLE: 968 fdc->sc_errors = 0; 969 fd->sc_skip = 0; 970 fd->sc_bcount = bp->b_bcount; 971 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 972 callout_stop(&fd->sc_motoroff_ch); 973 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 974 fdc->sc_state = MOTORWAIT; 975 return 1; 976 } 977 if ((fd->sc_flags & FD_MOTOR) == 0) { 978 /* Turn on the motor, being careful about pairing. */ 979 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 980 if (ofd && ofd->sc_flags & FD_MOTOR) { 981 callout_stop(&ofd->sc_motoroff_ch); 982 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 983 } 984 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 985 fd_set_motor(fdc, 0); 986 fdc->sc_state = MOTORWAIT; 987 /* Allow .25s for motor to stabilize. */ 988 callout_reset(&fd->sc_motoron_ch, hz / 4, 989 fd_motor_on, fd); 990 return 1; 991 } 992 /* Make sure the right drive is selected. */ 993 fd_set_motor(fdc, 0); 994 995 /* fall through */ 996 case DOSEEK: 997 doseek: 998 if (fd->sc_cylin == bp->b_cylinder) 999 goto doio; 1000 1001 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1002 out_fdc(iot, ioh, fd->sc_type->steprate); 1003 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1004 1005 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1006 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1007 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1008 1009 fd->sc_cylin = -1; 1010 fdc->sc_state = SEEKWAIT; 1011 1012 fd->sc_dk.dk_seek++; 1013 disk_busy(&fd->sc_dk); 1014 1015 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1016 return 1; 1017 1018 case DOIO: 1019 doio: 1020 type = fd->sc_type; 1021 if (finfo) 1022 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1023 (char *)finfo; 1024 sec = fd->sc_blkno % type->seccyl; 1025 nblks = type->seccyl - sec; 1026 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1027 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1028 fd->sc_nblks = nblks; 1029 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1030 head = sec / type->sectrac; 1031 sec -= head * type->sectrac; 1032 #ifdef DIAGNOSTIC 1033 { 1034 int block; 1035 block = (fd->sc_cylin * type->heads + head) 1036 * type->sectrac + sec; 1037 if (block != fd->sc_blkno) { 1038 printf("fdcintr: block %d != blkno " 1039 "%" PRId64 "\n", block, fd->sc_blkno); 1040 #ifdef DDB 1041 Debugger(); 1042 #endif 1043 } 1044 } 1045 #endif 1046 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1047 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1048 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1049 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1050 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1051 #ifdef FD_DEBUG 1052 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1053 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1054 head, sec, nblks); 1055 #endif 1056 if (finfo) { 1057 /* formatting */ 1058 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1059 fdc->sc_errors = 4; 1060 fdcretry(fdc); 1061 goto loop; 1062 } 1063 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1064 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1065 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1066 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1067 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1068 } else { 1069 if (read) 1070 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1071 else 1072 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1073 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1074 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1075 out_fdc(iot, ioh, head); 1076 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1077 out_fdc(iot, ioh, type->secsize);/* sector size */ 1078 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1079 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1080 out_fdc(iot, ioh, type->datalen);/* data length */ 1081 } 1082 fdc->sc_state = IOCOMPLETE; 1083 1084 disk_busy(&fd->sc_dk); 1085 1086 /* allow 2 seconds for operation */ 1087 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1088 return 1; /* will return later */ 1089 1090 case SEEKWAIT: 1091 callout_stop(&fdc->sc_timo_ch); 1092 fdc->sc_state = SEEKCOMPLETE; 1093 /* allow 1/50 second for heads to settle */ 1094 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1095 return 1; 1096 1097 case SEEKCOMPLETE: 1098 /* no data on seek */ 1099 disk_unbusy(&fd->sc_dk, 0, 0); 1100 1101 /* Make sure seek really happened. */ 1102 out_fdc(iot, ioh, NE7CMD_SENSEI); 1103 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1104 cyl != bp->b_cylinder * fd->sc_type->step) { 1105 #ifdef FD_DEBUG 1106 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1107 #endif 1108 fdcretry(fdc); 1109 goto loop; 1110 } 1111 fd->sc_cylin = bp->b_cylinder; 1112 goto doio; 1113 1114 case IOTIMEDOUT: 1115 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1116 case SEEKTIMEDOUT: 1117 case RECALTIMEDOUT: 1118 case RESETTIMEDOUT: 1119 fdcretry(fdc); 1120 goto loop; 1121 1122 case IOCOMPLETE: /* IO DONE, post-analyze */ 1123 callout_stop(&fdc->sc_timo_ch); 1124 1125 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1126 (bp->b_flags & B_READ)); 1127 1128 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1129 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1130 #ifdef FD_DEBUG 1131 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1132 "read failed" : "write failed"); 1133 printf("blkno %d nblks %d\n", 1134 fd->sc_blkno, fd->sc_nblks); 1135 #endif 1136 fdcretry(fdc); 1137 goto loop; 1138 } 1139 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1140 if (fdc->sc_errors) { 1141 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1142 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1143 printf("\n"); 1144 fdc->sc_errors = 0; 1145 } 1146 fd->sc_blkno += fd->sc_nblks; 1147 fd->sc_skip += fd->sc_nbytes; 1148 fd->sc_bcount -= fd->sc_nbytes; 1149 if (!finfo && fd->sc_bcount > 0) { 1150 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1151 goto doseek; 1152 } 1153 fdfinish(fd, bp); 1154 goto loop; 1155 1156 case DORESET: 1157 /* try a reset, keep motor on */ 1158 fd_set_motor(fdc, 1); 1159 delay(100); 1160 fd_set_motor(fdc, 0); 1161 fdc->sc_state = RESETCOMPLETE; 1162 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1163 return 1; /* will return later */ 1164 1165 case RESETCOMPLETE: 1166 callout_stop(&fdc->sc_timo_ch); 1167 /* clear the controller output buffer */ 1168 for (i = 0; i < 4; i++) { 1169 out_fdc(iot, ioh, NE7CMD_SENSEI); 1170 (void) fdcresult(fdc); 1171 } 1172 1173 /* fall through */ 1174 case DORECAL: 1175 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1176 out_fdc(iot, ioh, fd->sc_drive); 1177 fdc->sc_state = RECALWAIT; 1178 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1179 return 1; /* will return later */ 1180 1181 case RECALWAIT: 1182 callout_stop(&fdc->sc_timo_ch); 1183 fdc->sc_state = RECALCOMPLETE; 1184 /* allow 1/30 second for heads to settle */ 1185 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1186 return 1; /* will return later */ 1187 1188 case RECALCOMPLETE: 1189 out_fdc(iot, ioh, NE7CMD_SENSEI); 1190 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1191 #ifdef FD_DEBUG 1192 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1193 #endif 1194 fdcretry(fdc); 1195 goto loop; 1196 } 1197 fd->sc_cylin = 0; 1198 goto doseek; 1199 1200 case MOTORWAIT: 1201 if (fd->sc_flags & FD_MOTOR_WAIT) 1202 return 1; /* time's not up yet */ 1203 goto doseek; 1204 1205 default: 1206 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1207 return 1; 1208 } 1209 #ifdef DIAGNOSTIC 1210 panic("fdcintr: impossible"); 1211 #endif 1212 #undef st0 1213 #undef cyl 1214 } 1215 1216 void 1217 fdcretry(fdc) 1218 struct fdc_softc *fdc; 1219 { 1220 char bits[64]; 1221 struct fd_softc *fd; 1222 struct buf *bp; 1223 1224 fd = TAILQ_FIRST(&fdc->sc_drives); 1225 bp = BUFQ_PEEK(&fd->sc_q); 1226 1227 if (fd->sc_opts & FDOPT_NORETRY) 1228 goto fail; 1229 switch (fdc->sc_errors) { 1230 case 0: 1231 /* try again */ 1232 fdc->sc_state = DOSEEK; 1233 break; 1234 1235 case 1: case 2: case 3: 1236 /* didn't work; try recalibrating */ 1237 fdc->sc_state = DORECAL; 1238 break; 1239 1240 case 4: 1241 /* still no go; reset the bastard */ 1242 fdc->sc_state = DORESET; 1243 break; 1244 1245 default: 1246 fail: 1247 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1248 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1249 fd->sc_skip / FDC_BSIZE, 1250 (struct disklabel *)NULL); 1251 1252 printf(" (st0 %s", 1253 bitmask_snprintf(fdc->sc_status[0], 1254 NE7_ST0BITS, bits, 1255 sizeof(bits))); 1256 printf(" st1 %s", 1257 bitmask_snprintf(fdc->sc_status[1], 1258 NE7_ST1BITS, bits, 1259 sizeof(bits))); 1260 printf(" st2 %s", 1261 bitmask_snprintf(fdc->sc_status[2], 1262 NE7_ST2BITS, bits, 1263 sizeof(bits))); 1264 printf(" cyl %d head %d sec %d)\n", 1265 fdc->sc_status[3], 1266 fdc->sc_status[4], 1267 fdc->sc_status[5]); 1268 } 1269 1270 bp->b_flags |= B_ERROR; 1271 bp->b_error = EIO; 1272 fdfinish(fd, bp); 1273 } 1274 fdc->sc_errors++; 1275 } 1276 1277 int 1278 fdioctl(dev, cmd, addr, flag, p) 1279 dev_t dev; 1280 u_long cmd; 1281 caddr_t addr; 1282 int flag; 1283 struct proc *p; 1284 { 1285 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1286 struct fdformat_parms *form_parms; 1287 struct fdformat_cmd *form_cmd; 1288 struct ne7_fd_formb *fd_formb; 1289 struct disklabel buffer; 1290 int error; 1291 unsigned int scratch; 1292 int il[FD_MAX_NSEC + 1]; 1293 register int i, j; 1294 #ifdef __HAVE_OLD_DISKLABEL 1295 struct disklabel newlabel; 1296 #endif 1297 1298 switch (cmd) { 1299 case DIOCGDINFO: 1300 #ifdef __HAVE_OLD_DISKLABEL 1301 case ODIOCGDINFO: 1302 #endif 1303 memset(&buffer, 0, sizeof(buffer)); 1304 1305 buffer.d_secpercyl = fd->sc_type->seccyl; 1306 buffer.d_type = DTYPE_FLOPPY; 1307 buffer.d_secsize = FDC_BSIZE; 1308 1309 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1310 return EINVAL; 1311 1312 #ifdef __HAVE_OLD_DISKLABEL 1313 if (cmd == ODIOCGDINFO) { 1314 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1315 return ENOTTY; 1316 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1317 } else 1318 #endif 1319 *(struct disklabel *)addr = buffer; 1320 return 0; 1321 1322 case DIOCWLABEL: 1323 if ((flag & FWRITE) == 0) 1324 return EBADF; 1325 /* XXX do something */ 1326 return 0; 1327 1328 case DIOCWDINFO: 1329 #ifdef __HAVE_OLD_DISKLABEL 1330 case ODIOCWDINFO: 1331 #endif 1332 { 1333 struct disklabel *lp; 1334 1335 if ((flag & FWRITE) == 0) 1336 return EBADF; 1337 #ifdef __HAVE_OLD_DISKLABEL 1338 if (cmd == ODIOCWDINFO) { 1339 memset(&newlabel, 0, sizeof newlabel); 1340 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1341 lp = &newlabel; 1342 } else 1343 #endif 1344 lp = (struct disklabel *)addr; 1345 1346 error = setdisklabel(&buffer, lp, 0, NULL); 1347 if (error) 1348 return error; 1349 1350 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1351 return error; 1352 } 1353 1354 case FDIOCGETFORMAT: 1355 form_parms = (struct fdformat_parms *)addr; 1356 form_parms->fdformat_version = FDFORMAT_VERSION; 1357 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1358 form_parms->ncyl = fd->sc_type->cyls; 1359 form_parms->nspt = fd->sc_type->sectrac; 1360 form_parms->ntrk = fd->sc_type->heads; 1361 form_parms->stepspercyl = fd->sc_type->step; 1362 form_parms->gaplen = fd->sc_type->gap2; 1363 form_parms->fillbyte = fd->sc_type->fillbyte; 1364 form_parms->interleave = fd->sc_type->interleave; 1365 switch (fd->sc_type->rate) { 1366 case FDC_500KBPS: 1367 form_parms->xfer_rate = 500 * 1024; 1368 break; 1369 case FDC_300KBPS: 1370 form_parms->xfer_rate = 300 * 1024; 1371 break; 1372 case FDC_250KBPS: 1373 form_parms->xfer_rate = 250 * 1024; 1374 break; 1375 default: 1376 return EINVAL; 1377 } 1378 return 0; 1379 1380 case FDIOCSETFORMAT: 1381 if((flag & FWRITE) == 0) 1382 return EBADF; /* must be opened for writing */ 1383 form_parms = (struct fdformat_parms *)addr; 1384 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1385 return EINVAL; /* wrong version of formatting prog */ 1386 1387 scratch = form_parms->nbps >> 7; 1388 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1389 scratch & ~(1 << (ffs(scratch)-1))) 1390 /* not a power-of-two multiple of 128 */ 1391 return EINVAL; 1392 1393 switch (form_parms->xfer_rate) { 1394 case 500 * 1024: 1395 fd->sc_type->rate = FDC_500KBPS; 1396 break; 1397 case 300 * 1024: 1398 fd->sc_type->rate = FDC_300KBPS; 1399 break; 1400 case 250 * 1024: 1401 fd->sc_type->rate = FDC_250KBPS; 1402 break; 1403 default: 1404 return EINVAL; 1405 } 1406 1407 if (form_parms->nspt > FD_MAX_NSEC || 1408 form_parms->fillbyte > 0xff || 1409 form_parms->interleave > 0xff) 1410 return EINVAL; 1411 fd->sc_type->sectrac = form_parms->nspt; 1412 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1413 return EINVAL; 1414 fd->sc_type->heads = form_parms->ntrk; 1415 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1416 fd->sc_type->secsize = ffs(scratch)-1; 1417 fd->sc_type->gap2 = form_parms->gaplen; 1418 fd->sc_type->cyls = form_parms->ncyl; 1419 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1420 form_parms->nbps / DEV_BSIZE; 1421 fd->sc_type->step = form_parms->stepspercyl; 1422 fd->sc_type->fillbyte = form_parms->fillbyte; 1423 fd->sc_type->interleave = form_parms->interleave; 1424 return 0; 1425 1426 case FDIOCFORMAT_TRACK: 1427 if((flag & FWRITE) == 0) 1428 return EBADF; /* must be opened for writing */ 1429 form_cmd = (struct fdformat_cmd *)addr; 1430 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1431 return EINVAL; /* wrong version of formatting prog */ 1432 1433 if (form_cmd->head >= fd->sc_type->heads || 1434 form_cmd->cylinder >= fd->sc_type->cyls) { 1435 return EINVAL; 1436 } 1437 1438 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1439 M_TEMP, M_NOWAIT); 1440 if (fd_formb == 0) 1441 return ENOMEM; 1442 1443 fd_formb->head = form_cmd->head; 1444 fd_formb->cyl = form_cmd->cylinder; 1445 fd_formb->transfer_rate = fd->sc_type->rate; 1446 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1447 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1448 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1449 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1450 1451 memset(il, 0, sizeof il); 1452 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1453 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1454 j++; 1455 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1456 j += fd->sc_type->interleave; 1457 } 1458 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1459 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1460 fd_formb->fd_formb_headno(i) = form_cmd->head; 1461 fd_formb->fd_formb_secno(i) = il[i+1]; 1462 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1463 } 1464 1465 error = fdformat(dev, fd_formb, p); 1466 free(fd_formb, M_TEMP); 1467 return error; 1468 1469 case FDIOCGETOPTS: /* get drive options */ 1470 *(int *)addr = fd->sc_opts; 1471 return 0; 1472 1473 case FDIOCSETOPTS: /* set drive options */ 1474 fd->sc_opts = *(int *)addr; 1475 return 0; 1476 1477 default: 1478 return ENOTTY; 1479 } 1480 1481 #ifdef DIAGNOSTIC 1482 panic("fdioctl: impossible"); 1483 #endif 1484 } 1485 1486 int 1487 fdformat(dev, finfo, p) 1488 dev_t dev; 1489 struct ne7_fd_formb *finfo; 1490 struct proc *p; 1491 { 1492 int rv = 0, s; 1493 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1494 struct fd_type *type = fd->sc_type; 1495 struct buf *bp; 1496 1497 /* set up a buffer header for fdstrategy() */ 1498 s = splbio(); 1499 bp = (struct buf *)pool_get(&bufpool, PR_NOWAIT); 1500 splx(s); 1501 if (bp == NULL) 1502 return ENOBUFS; 1503 1504 memset((void *)bp, 0, sizeof(struct buf)); 1505 BUF_INIT(bp); 1506 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1507 bp->b_proc = p; 1508 bp->b_dev = dev; 1509 1510 /* 1511 * calculate a fake blkno, so fdstrategy() would initiate a 1512 * seek to the requested cylinder 1513 */ 1514 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1515 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1516 1517 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1518 bp->b_data = (caddr_t)finfo; 1519 1520 #ifdef DEBUG 1521 printf("fdformat: blkno %" PRIx64 " count %lx\n", 1522 bp->b_blkno, bp->b_bcount); 1523 #endif 1524 1525 /* now do the format */ 1526 fdstrategy(bp); 1527 1528 /* ...and wait for it to complete */ 1529 rv = biowait(bp); 1530 s = splbio(); 1531 pool_put(&bufpool, bp); 1532 splx(s); 1533 return rv; 1534 } 1535 1536 /* 1537 * Mountroot hook: prompt the user to enter the root file system 1538 * floppy. 1539 */ 1540 void 1541 fd_mountroot_hook(dev) 1542 struct device *dev; 1543 { 1544 int c; 1545 1546 printf("Insert filesystem floppy and press return."); 1547 cnpollc(1); 1548 for (;;) { 1549 c = cngetc(); 1550 if ((c == '\r') || (c == '\n')) { 1551 printf("\n"); 1552 break; 1553 } 1554 } 1555 cnpollc(0); 1556 } 1557