1 /* $NetBSD: fd.c,v 1.101 2013/05/29 00:47:48 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003, 2008 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Don Ahn. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)fd.c 7.4 (Berkeley) 5/25/91 64 */ 65 66 /* 67 * Floppy formatting facilities merged from FreeBSD fd.c driver: 68 * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp 69 * which carries the same copyright/redistribution notice as shown above with 70 * the addition of the following statement before the "Redistribution and 71 * use ..." clause: 72 * 73 * Copyright (c) 1993, 1994 by 74 * jc@irbs.UUCP (John Capo) 75 * vak@zebub.msk.su (Serge Vakulenko) 76 * ache@astral.msk.su (Andrew A. Chernov) 77 * 78 * Copyright (c) 1993, 1994, 1995 by 79 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 80 * dufault@hda.com (Peter Dufault) 81 */ 82 83 #include <sys/cdefs.h> 84 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.101 2013/05/29 00:47:48 christos Exp $"); 85 86 #include "opt_ddb.h" 87 88 /* 89 * XXX This driver should be properly MI'd some day, but this allows us 90 * XXX to eliminate a lot of code duplication for now. 91 */ 92 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 93 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 94 !defined(prep) && !defined(sandpoint) && !defined(x86_64) && \ 95 !defined(mvmeppc) && !defined(ofppc) 96 #error platform not supported by this driver, yet 97 #endif 98 99 #include <sys/param.h> 100 #include <sys/systm.h> 101 #include <sys/callout.h> 102 #include <sys/kernel.h> 103 #include <sys/file.h> 104 #include <sys/ioctl.h> 105 #include <sys/device.h> 106 #include <sys/disklabel.h> 107 #include <sys/disk.h> 108 #include <sys/buf.h> 109 #include <sys/bufq.h> 110 #include <sys/malloc.h> 111 #include <sys/uio.h> 112 #include <sys/syslog.h> 113 #include <sys/queue.h> 114 #include <sys/proc.h> 115 #include <sys/fdio.h> 116 #include <sys/conf.h> 117 #include <sys/vnode.h> 118 #include <sys/rnd.h> 119 120 #include <prop/proplib.h> 121 122 #include <dev/cons.h> 123 124 #include <sys/cpu.h> 125 #include <sys/bus.h> 126 127 #include "locators.h" 128 129 #if defined(atari) 130 /* 131 * On the atari, it is configured as fdcisa 132 */ 133 #define FDCCF_DRIVE FDCISACF_DRIVE 134 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 135 136 #define fd_cd fdisa_cd 137 #endif /* atari */ 138 139 #include <sys/intr.h> 140 141 #include <dev/isa/isavar.h> 142 #include <dev/isa/isadmavar.h> 143 144 #include <dev/isa/fdreg.h> 145 #include <dev/isa/fdcvar.h> 146 147 #if defined(i386) || defined(x86_64) 148 149 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 150 #include <i386/isa/nvram.h> 151 152 #if defined(i386) 153 #include "mca.h" 154 #if NMCA > 0 155 #include <machine/mca_machdep.h> /* for MCA_system */ 156 #endif 157 #endif 158 159 #endif /* i386 || x86_64 */ 160 161 #include <dev/isa/fdvar.h> 162 163 #define FDUNIT(dev) (minor(dev) / 8) 164 #define FDTYPE(dev) (minor(dev) % 8) 165 166 /* (mis)use device use flag to identify format operation */ 167 #define B_FORMAT B_DEVPRIVATE 168 169 /* controller driver configuration */ 170 int fdprint(void *, const char *); 171 172 #if NMCA > 0 173 /* MCA - specific entries */ 174 const struct fd_type mca_fd_types[] = { 175 { 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 */ 176 { 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 */ 177 }; 178 #endif /* NMCA > 0 */ 179 180 /* The order of entries in the following table is important -- BEWARE! */ 181 182 #if defined(atari) 183 const struct fd_type fd_types[] = { 184 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 185 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 186 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 187 }; 188 #else 189 const struct fd_type fd_types[] = { 190 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 191 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 192 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 193 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 194 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 195 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 196 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 197 }; 198 #endif /* defined(atari) */ 199 200 void fdcfinishattach(device_t); 201 int fdprobe(device_t, cfdata_t, void *); 202 void fdattach(device_t, device_t, void *); 203 static int fddetach(device_t, int); 204 static int fdcintr1(struct fdc_softc *); 205 static void fdcintrcb(void *); 206 static bool fdcsuspend(device_t, const pmf_qual_t *); 207 static bool fdcresume(device_t, const pmf_qual_t *); 208 209 extern struct cfdriver fd_cd; 210 211 #ifdef atari 212 CFATTACH_DECL_NEW(fdisa, sizeof(struct fd_softc), 213 fdprobe, fdattach, fddetach, NULL); 214 #else 215 CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), 216 fdprobe, fdattach, fddetach, NULL); 217 #endif 218 219 dev_type_open(fdopen); 220 dev_type_close(fdclose); 221 dev_type_read(fdread); 222 dev_type_write(fdwrite); 223 dev_type_ioctl(fdioctl); 224 dev_type_strategy(fdstrategy); 225 226 const struct bdevsw fd_bdevsw = { 227 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 228 }; 229 230 const struct cdevsw fd_cdevsw = { 231 fdopen, fdclose, fdread, fdwrite, fdioctl, 232 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 233 }; 234 235 void fdgetdisklabel(struct fd_softc *); 236 int fd_get_parms(struct fd_softc *); 237 void fdstart(struct fd_softc *); 238 239 struct dkdriver fddkdriver = { fdstrategy, NULL }; 240 241 #if defined(i386) || defined(x86_64) 242 const struct fd_type *fd_nvtotype(const char *, int, int); 243 #endif /* i386 || x86_64 */ 244 void fd_set_motor(struct fdc_softc *fdc, int reset); 245 void fd_motor_off(void *arg); 246 void fd_motor_on(void *arg); 247 int fdcresult(struct fdc_softc *fdc); 248 void fdcstart(struct fdc_softc *fdc); 249 void fdcstatus(device_t, int, const char *); 250 void fdctimeout(void *arg); 251 void fdcretry(struct fdc_softc *fdc); 252 void fdfinish(struct fd_softc *fd, struct buf *bp); 253 static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 254 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 255 static void fd_set_geometry(struct fd_softc *fd); 256 257 void fd_mountroot_hook(device_t); 258 259 /* 260 * Arguments passed between fdcattach and fdprobe. 261 */ 262 struct fdc_attach_args { 263 int fa_drive; 264 const struct fd_type *fa_deftype; 265 }; 266 267 /* 268 * Print the location of a disk drive (called just before attaching the 269 * the drive). If `fdc' is not NULL, the drive was found but was not 270 * in the system config file; print the drive name as well. 271 * Return QUIET (config_find ignores this if the device was configured) to 272 * avoid printing `fdN not configured' messages. 273 */ 274 int 275 fdprint(void *aux, const char *fdc) 276 { 277 struct fdc_attach_args *fa = aux; 278 279 if (!fdc) 280 aprint_normal(" drive %d", fa->fa_drive); 281 return QUIET; 282 } 283 284 static bool 285 fdcresume(device_t self, const pmf_qual_t *qual) 286 { 287 struct fdc_softc *fdc = device_private(self); 288 289 mutex_enter(&fdc->sc_mtx); 290 (void)fdcintr1(fdc); 291 mutex_exit(&fdc->sc_mtx); 292 return true; 293 } 294 295 static bool 296 fdcsuspend(device_t self, const pmf_qual_t *qual) 297 { 298 struct fdc_softc *fdc = device_private(self); 299 int drive; 300 struct fd_softc *fd; 301 302 mutex_enter(&fdc->sc_mtx); 303 while (fdc->sc_state != DEVIDLE) 304 cv_wait(&fdc->sc_cv, &fdc->sc_mtx); 305 for (drive = 0; drive < 4; drive++) { 306 if ((fd = fdc->sc_fd[drive]) == NULL) 307 continue; 308 fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); 309 } 310 fd_set_motor(fdc, 0); 311 mutex_exit(&fdc->sc_mtx); 312 return true; 313 } 314 315 void 316 fdc_childdet(device_t self, device_t child) 317 { 318 struct fdc_softc *fdc = device_private(self); 319 struct fd_softc *fd = device_private(child); 320 int drive = fd->sc_drive; 321 322 KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ 323 fdc->sc_fd[drive] = NULL; 324 } 325 326 int 327 fdcdetach(device_t self, int flags) 328 { 329 int rc; 330 struct fdc_softc *fdc = device_private(self); 331 332 if ((rc = config_detach_children(self, flags)) != 0) 333 return rc; 334 335 pmf_device_deregister(self); 336 337 isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); 338 isa_drq_free(fdc->sc_ic, fdc->sc_drq); 339 340 callout_destroy(&fdc->sc_intr_ch); 341 callout_destroy(&fdc->sc_timo_ch); 342 343 cv_destroy(&fdc->sc_cv); 344 mutex_destroy(&fdc->sc_mtx); 345 346 return 0; 347 } 348 349 void 350 fdcattach(struct fdc_softc *fdc) 351 { 352 mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); 353 cv_init(&fdc->sc_cv, "fdcwake"); 354 callout_init(&fdc->sc_timo_ch, 0); 355 callout_init(&fdc->sc_intr_ch, 0); 356 357 fdc->sc_state = DEVIDLE; 358 TAILQ_INIT(&fdc->sc_drives); 359 360 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 361 362 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 363 aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", 364 fdc->sc_drq); 365 return; 366 } 367 368 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 369 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 370 aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); 371 return; 372 } 373 374 config_interrupts(fdc->sc_dev, fdcfinishattach); 375 376 if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { 377 aprint_error_dev(fdc->sc_dev, 378 "cannot set power mgmt handler\n"); 379 } 380 } 381 382 void 383 fdcfinishattach(device_t self) 384 { 385 struct fdc_softc *fdc = device_private(self); 386 bus_space_tag_t iot = fdc->sc_iot; 387 bus_space_handle_t ioh = fdc->sc_ioh; 388 struct fdc_attach_args fa; 389 390 /* 391 * Reset the controller to get it into a known state. Not all 392 * probes necessarily need do this to discover the controller up 393 * front, so don't assume anything. 394 */ 395 396 bus_space_write_1(iot, ioh, fdout, 0); 397 delay(100); 398 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 399 400 /* see if it can handle a command */ 401 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 402 aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); 403 return; 404 } 405 out_fdc(iot, ioh, 0xdf); 406 out_fdc(iot, ioh, 2); 407 408 #if defined(i386) || defined(x86_64) 409 /* 410 * The NVRAM info only tells us about the first two disks on the 411 * `primary' floppy controller. 412 */ 413 /* XXX device_unit() abuse */ 414 if (device_unit(fdc->sc_dev) == 0) { 415 int type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 416 fdc->sc_known = 1; 417 fdc->sc_knownfds[0] = fd_nvtotype(device_xname(fdc->sc_dev), 418 type, 0); 419 if (fdc->sc_knownfds[0] != NULL) 420 fdc->sc_present |= 1; 421 fdc->sc_knownfds[1] = fd_nvtotype(device_xname(fdc->sc_dev), 422 type, 1); 423 if (fdc->sc_knownfds[1] != NULL) 424 fdc->sc_present |= 2; 425 } 426 #endif /* i386 || x86_64 */ 427 428 /* physical limit: four drives per controller. */ 429 fdc->sc_state = PROBING; 430 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 431 if (fdc->sc_known) { 432 if (fdc->sc_present & (1 << fa.fa_drive)) { 433 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 434 config_found(fdc->sc_dev, (void *)&fa, 435 fdprint); 436 } 437 } else { 438 #if defined(atari) 439 /* 440 * Atari has a different ordening, defaults to 1.44 441 */ 442 fa.fa_deftype = &fd_types[2]; 443 #else 444 /* 445 * Default to 1.44MB on Alpha and BeBox. How do we tell 446 * on these platforms? 447 */ 448 fa.fa_deftype = &fd_types[0]; 449 #endif 450 (void)config_found_ia(fdc->sc_dev, "fdc", (void *)&fa, fdprint); 451 } 452 } 453 fdc->sc_state = DEVIDLE; 454 } 455 456 int 457 fdprobe(device_t parent, cfdata_t match, void *aux) 458 { 459 struct fdc_softc *fdc = device_private(parent); 460 cfdata_t cf = match; 461 struct fdc_attach_args *fa = aux; 462 int drive = fa->fa_drive; 463 bus_space_tag_t iot = fdc->sc_iot; 464 bus_space_handle_t ioh = fdc->sc_ioh; 465 int n; 466 467 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 468 cf->cf_loc[FDCCF_DRIVE] != drive) 469 return 0; 470 /* 471 * XXX 472 * This is to work around some odd interactions between this driver 473 * and SMC Ethernet cards. 474 */ 475 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 476 return 0; 477 478 /* Use PNP information if available */ 479 if (fdc->sc_known) 480 return 1; 481 482 mutex_enter(&fdc->sc_mtx); 483 /* toss any interrupt status */ 484 for (n = 0; n < 4; n++) { 485 out_fdc(iot, ioh, NE7CMD_SENSEI); 486 (void) fdcresult(fdc); 487 } 488 /* select drive and turn on motor */ 489 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 490 /* wait for motor to spin up */ 491 /* XXX check sc_probe */ 492 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 493 out_fdc(iot, ioh, NE7CMD_RECAL); 494 out_fdc(iot, ioh, drive); 495 /* wait for recalibrate, up to 2s */ 496 /* XXX check sc_probe */ 497 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 498 #ifdef FD_DEBUG 499 /* XXX */ 500 printf("fdprobe: got intr\n"); 501 #endif 502 } 503 out_fdc(iot, ioh, NE7CMD_SENSEI); 504 n = fdcresult(fdc); 505 #ifdef FD_DEBUG 506 { 507 int i; 508 printf("fdprobe: status"); 509 for (i = 0; i < n; i++) 510 printf(" %x", fdc->sc_status[i]); 511 printf("\n"); 512 } 513 #endif 514 /* turn off motor */ 515 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 516 mutex_exit(&fdc->sc_mtx); 517 518 #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ 519 if (n != 2 || (fdc->sc_status[1] != 0)) 520 return 0; 521 #else 522 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 523 return 0; 524 #endif /* bebox */ 525 526 return 1; 527 } 528 529 /* 530 * Controller is working, and drive responded. Attach it. 531 */ 532 void 533 fdattach(device_t parent, device_t self, void *aux) 534 { 535 struct fdc_softc *fdc = device_private(parent); 536 struct fd_softc *fd = device_private(self); 537 struct fdc_attach_args *fa = aux; 538 const struct fd_type *type = fa->fa_deftype; 539 int drive = fa->fa_drive; 540 541 fd->sc_dev = self; 542 543 callout_init(&fd->sc_motoron_ch, 0); 544 callout_init(&fd->sc_motoroff_ch, 0); 545 546 /* XXX Allow `flags' to override device type? */ 547 548 if (type) 549 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 550 type->cyls, type->heads, type->sectrac); 551 else 552 aprint_normal(": density unknown\n"); 553 554 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 555 fd->sc_cylin = -1; 556 fd->sc_drive = drive; 557 fd->sc_deftype = type; 558 fdc->sc_fd[drive] = fd; 559 560 /* 561 * Initialize and attach the disk structure. 562 */ 563 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 564 disk_attach(&fd->sc_dk); 565 566 /* 567 * Establish a mountroot hook. 568 */ 569 fd->sc_roothook = 570 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 571 572 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 573 RND_TYPE_DISK, 0); 574 575 fd_set_geometry(fd); 576 577 if (!pmf_device_register(self, NULL, NULL)) 578 aprint_error_dev(self, "cannot set power mgmt handler\n"); 579 } 580 581 static int 582 fddetach(device_t self, int flags) 583 { 584 struct fd_softc *fd = device_private(self); 585 int bmaj, cmaj, i, mn; 586 587 fd_motor_off(fd); 588 589 /* locate the major number */ 590 bmaj = bdevsw_lookup_major(&fd_bdevsw); 591 cmaj = cdevsw_lookup_major(&fd_cdevsw); 592 593 /* Nuke the vnodes for any open instances. */ 594 for (i = 0; i < MAXPARTITIONS; i++) { 595 mn = DISKMINOR(device_unit(self), i); 596 vdevgone(bmaj, mn, mn, VBLK); 597 vdevgone(cmaj, mn, mn, VCHR); 598 } 599 600 pmf_device_deregister(self); 601 602 #if 0 /* XXX need to undo at detach? */ 603 fd_set_geometry(fd); 604 #endif 605 606 rnd_detach_source(&fd->rnd_source); 607 608 disk_detach(&fd->sc_dk); 609 disk_destroy(&fd->sc_dk); 610 611 /* Kill off any queued buffers. */ 612 bufq_drain(fd->sc_q); 613 614 bufq_free(fd->sc_q); 615 616 callout_destroy(&fd->sc_motoroff_ch); 617 callout_destroy(&fd->sc_motoron_ch); 618 619 return 0; 620 } 621 622 #if defined(i386) || defined(x86_64) 623 /* 624 * Translate nvram type into internal data structure. Return NULL for 625 * none/unknown/unusable. 626 */ 627 const struct fd_type * 628 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 629 { 630 int type; 631 632 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 633 switch (type) { 634 case NVRAM_DISKETTE_NONE: 635 return NULL; 636 case NVRAM_DISKETTE_12M: 637 return &fd_types[1]; 638 case NVRAM_DISKETTE_TYPE5: 639 case NVRAM_DISKETTE_TYPE6: 640 /* XXX We really ought to handle 2.88MB format. */ 641 case NVRAM_DISKETTE_144M: 642 #if NMCA > 0 643 if (MCA_system) 644 return &mca_fd_types[0]; 645 else 646 #endif /* NMCA > 0 */ 647 return &fd_types[0]; 648 case NVRAM_DISKETTE_360K: 649 return &fd_types[3]; 650 case NVRAM_DISKETTE_720K: 651 #if NMCA > 0 652 if (MCA_system) 653 return &mca_fd_types[1]; 654 else 655 #endif /* NMCA > 0 */ 656 return &fd_types[4]; 657 default: 658 printf("%s: drive %d: unknown device type 0x%x\n", 659 fdc, drive, type); 660 return NULL; 661 } 662 } 663 #endif /* i386 || x86_64 */ 664 665 static const struct fd_type * 666 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 667 { 668 u_int type = FDTYPE(dev); 669 670 if (type > __arraycount(fd_types)) 671 return NULL; 672 return type ? &fd_types[type - 1] : fd->sc_deftype; 673 } 674 675 void 676 fdstrategy(struct buf *bp) 677 { 678 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 679 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 680 int sz; 681 682 /* Valid unit, controller, and request? */ 683 if (bp->b_blkno < 0 || 684 ((bp->b_bcount % FDC_BSIZE) != 0 && 685 (bp->b_flags & B_FORMAT) == 0)) { 686 bp->b_error = EINVAL; 687 goto done; 688 } 689 690 /* If it's a null transfer, return immediately. */ 691 if (bp->b_bcount == 0) 692 goto done; 693 694 sz = howmany(bp->b_bcount, FDC_BSIZE); 695 696 if (bp->b_blkno + sz > fd->sc_type->size) { 697 sz = fd->sc_type->size - bp->b_blkno; 698 if (sz == 0) { 699 /* If exactly at end of disk, return EOF. */ 700 goto done; 701 } 702 if (sz < 0) { 703 /* If past end of disk, return EINVAL. */ 704 bp->b_error = EINVAL; 705 goto done; 706 } 707 /* Otherwise, truncate request. */ 708 bp->b_bcount = sz << DEV_BSHIFT; 709 } 710 711 bp->b_rawblkno = bp->b_blkno; 712 bp->b_cylinder = 713 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 714 715 #ifdef FD_DEBUG 716 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 717 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 718 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 719 #endif 720 721 /* Queue transfer on drive, activate drive and controller if idle. */ 722 mutex_enter(&fdc->sc_mtx); 723 bufq_put(fd->sc_q, bp); 724 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 725 if (fd->sc_active == 0) 726 fdstart(fd); 727 #ifdef DIAGNOSTIC 728 else { 729 if (fdc->sc_state == DEVIDLE) { 730 printf("fdstrategy: controller inactive\n"); 731 fdcstart(fdc); 732 } 733 } 734 #endif 735 mutex_exit(&fdc->sc_mtx); 736 return; 737 738 done: 739 /* Toss transfer; we're done early. */ 740 bp->b_resid = bp->b_bcount; 741 biodone(bp); 742 } 743 744 void 745 fdstart(struct fd_softc *fd) 746 { 747 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 748 int active = !TAILQ_EMPTY(&fdc->sc_drives); 749 750 KASSERT(mutex_owned(&fdc->sc_mtx)); 751 /* Link into controller queue. */ 752 fd->sc_active = 1; 753 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 754 755 /* If controller not already active, start it. */ 756 if (!active) 757 fdcstart(fdc); 758 } 759 760 void 761 fdfinish(struct fd_softc *fd, struct buf *bp) 762 { 763 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 764 765 /* 766 * Move this drive to the end of the queue to give others a `fair' 767 * chance. We only force a switch if N operations are completed while 768 * another drive is waiting to be serviced, since there is a long motor 769 * startup delay whenever we switch. 770 */ 771 (void)bufq_get(fd->sc_q); 772 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 773 fd->sc_ops = 0; 774 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 775 if (bufq_peek(fd->sc_q) != NULL) 776 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 777 else 778 fd->sc_active = 0; 779 } 780 bp->b_resid = fd->sc_bcount; 781 fd->sc_skip = 0; 782 783 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 784 785 biodone(bp); 786 /* turn off motor 5s from now */ 787 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 788 fdc->sc_state = DEVIDLE; 789 } 790 791 int 792 fdread(dev_t dev, struct uio *uio, int flags) 793 { 794 795 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 796 } 797 798 int 799 fdwrite(dev_t dev, struct uio *uio, int flags) 800 { 801 802 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 803 } 804 805 void 806 fd_set_motor(struct fdc_softc *fdc, int reset) 807 { 808 struct fd_softc *fd; 809 u_char status; 810 int n; 811 812 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 813 status = fd->sc_drive; 814 else 815 status = 0; 816 if (!reset) 817 status |= FDO_FRST | FDO_FDMAEN; 818 for (n = 0; n < 4; n++) 819 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 820 status |= FDO_MOEN(n); 821 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 822 } 823 824 void 825 fd_motor_off(void *arg) 826 { 827 struct fd_softc *fd = arg; 828 struct fdc_softc *fdc; 829 830 fdc = device_private(device_parent(fd->sc_dev)); 831 832 mutex_enter(&fdc->sc_mtx); 833 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 834 fd_set_motor(fdc, 0); 835 mutex_exit(&fdc->sc_mtx); 836 } 837 838 void 839 fd_motor_on(void *arg) 840 { 841 struct fd_softc *fd = arg; 842 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 843 844 mutex_enter(&fdc->sc_mtx); 845 fd->sc_flags &= ~FD_MOTOR_WAIT; 846 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 847 (void)fdcintr1(fdc); 848 mutex_exit(&fdc->sc_mtx); 849 } 850 851 int 852 fdcresult(struct fdc_softc *fdc) 853 { 854 bus_space_tag_t iot = fdc->sc_iot; 855 bus_space_handle_t ioh = fdc->sc_ioh; 856 u_char i; 857 u_int j = 100000, 858 n = 0; 859 860 for (; j; j--) { 861 i = bus_space_read_1(iot, ioh, fdsts) & 862 (NE7_DIO | NE7_RQM | NE7_CB); 863 if (i == NE7_RQM) 864 return n; 865 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 866 if (n >= sizeof(fdc->sc_status)) { 867 log(LOG_ERR, "fdcresult: overrun\n"); 868 return -1; 869 } 870 fdc->sc_status[n++] = 871 bus_space_read_1(iot, ioh, fddata); 872 } 873 delay(10); 874 } 875 log(LOG_ERR, "fdcresult: timeout\n"); 876 return -1; 877 } 878 879 int 880 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 881 { 882 u_char i; 883 u_int j = 100000; 884 885 for (; j; j--) { 886 i = bus_space_read_1(iot, ioh, fdsts) & 887 (NE7_DIO | NE7_RQM); 888 if (i == NE7_RQM) { 889 bus_space_write_1(iot, ioh, fddata, x); 890 return 0; 891 } 892 delay(10); 893 } 894 return -1; 895 } 896 897 int 898 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 899 { 900 struct fd_softc *fd; 901 const struct fd_type *type; 902 903 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 904 if (fd == NULL) 905 return (ENXIO); 906 907 type = fd_dev_to_type(fd, dev); 908 if (type == NULL) 909 return ENXIO; 910 911 if ((fd->sc_flags & FD_OPEN) != 0 && 912 memcmp(fd->sc_type, type, sizeof(*type))) 913 return EBUSY; 914 915 fd->sc_type_copy = *type; 916 fd->sc_type = &fd->sc_type_copy; 917 fd->sc_cylin = -1; 918 fd->sc_flags |= FD_OPEN; 919 920 fd_set_geometry(fd); 921 922 return 0; 923 } 924 925 int 926 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 927 { 928 struct fd_softc *fd = 929 device_lookup_private(&fd_cd, FDUNIT(dev)); 930 931 fd->sc_flags &= ~FD_OPEN; 932 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 933 return 0; 934 } 935 936 void 937 fdcstart(struct fdc_softc *fdc) 938 { 939 940 KASSERT(mutex_owned(&fdc->sc_mtx)); 941 942 if (!device_is_active(fdc->sc_dev)) 943 return; 944 945 #ifdef DIAGNOSTIC 946 /* only got here if controller's drive queue was inactive; should 947 be in idle state */ 948 if (fdc->sc_state != DEVIDLE) { 949 printf("fdcstart: not idle\n"); 950 return; 951 } 952 #endif 953 (void)fdcintr1(fdc); 954 } 955 956 static void 957 fdcpstatus(int n, struct fdc_softc *fdc) 958 { 959 char bits[64]; 960 961 switch (n) { 962 case 0: 963 printf("\n"); 964 break; 965 case 2: 966 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 967 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 968 break; 969 case 7: 970 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 971 printf(" (st0 %s", bits); 972 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 973 printf(" st1 %s", bits); 974 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 975 printf(" st2 %s", bits); 976 printf(" cyl %d head %d sec %d)\n", 977 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 978 break; 979 #ifdef DIAGNOSTIC 980 default: 981 printf("\nfdcstatus: weird size"); 982 break; 983 #endif 984 } 985 } 986 987 void 988 fdcstatus(device_t dv, int n, const char *s) 989 { 990 struct fdc_softc *fdc = device_private(device_parent(dv)); 991 992 if (n == 0) { 993 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 994 (void) fdcresult(fdc); 995 n = 2; 996 } 997 fdcpstatus(n, fdc); 998 999 aprint_normal_dev(dv, "%s", s); 1000 1001 } 1002 1003 void 1004 fdctimeout(void *arg) 1005 { 1006 struct fdc_softc *fdc = arg; 1007 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1008 1009 mutex_enter(&fdc->sc_mtx); 1010 #ifdef DEBUG 1011 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 1012 #endif 1013 fdcstatus(fd->sc_dev, 0, "timeout"); 1014 1015 if (bufq_peek(fd->sc_q) != NULL) 1016 fdc->sc_state++; 1017 else 1018 fdc->sc_state = DEVIDLE; 1019 1020 (void)fdcintr1(fdc); 1021 mutex_exit(&fdc->sc_mtx); 1022 } 1023 1024 static int 1025 fdcintr1(struct fdc_softc *fdc) 1026 { 1027 #define st0 fdc->sc_status[0] 1028 #define cyl fdc->sc_status[1] 1029 struct fd_softc *fd; 1030 struct buf *bp; 1031 bus_space_tag_t iot = fdc->sc_iot; 1032 bus_space_handle_t ioh = fdc->sc_ioh; 1033 int read, head, sec, i, nblks; 1034 struct fd_type *type; 1035 struct ne7_fd_formb *finfo = NULL; 1036 1037 KASSERT(mutex_owned(&fdc->sc_mtx)); 1038 if (fdc->sc_state == PROBING) { 1039 #ifdef DEBUG 1040 printf("fdcintr: got probe interrupt\n"); 1041 #endif 1042 fdc->sc_probe++; 1043 goto out; 1044 } 1045 1046 loop: 1047 /* Is there a drive for the controller to do a transfer with? */ 1048 fd = TAILQ_FIRST(&fdc->sc_drives); 1049 if (fd == NULL) { 1050 fdc->sc_state = DEVIDLE; 1051 goto out; 1052 } 1053 1054 /* Is there a transfer to this drive? If not, deactivate drive. */ 1055 bp = bufq_peek(fd->sc_q); 1056 if (bp == NULL) { 1057 fd->sc_ops = 0; 1058 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1059 fd->sc_active = 0; 1060 goto loop; 1061 } 1062 1063 if (bp->b_flags & B_FORMAT) 1064 finfo = (struct ne7_fd_formb *)bp->b_data; 1065 1066 switch (fdc->sc_state) { 1067 case DEVIDLE: 1068 fdc->sc_errors = 0; 1069 fd->sc_skip = 0; 1070 fd->sc_bcount = bp->b_bcount; 1071 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1072 callout_stop(&fd->sc_motoroff_ch); 1073 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1074 fdc->sc_state = MOTORWAIT; 1075 return 1; 1076 } 1077 if ((fd->sc_flags & FD_MOTOR) == 0) { 1078 /* Turn on the motor, being careful about pairing. */ 1079 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1080 if (ofd && ofd->sc_flags & FD_MOTOR) { 1081 callout_stop(&ofd->sc_motoroff_ch); 1082 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1083 } 1084 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1085 fd_set_motor(fdc, 0); 1086 fdc->sc_state = MOTORWAIT; 1087 /* Allow .25s for motor to stabilize. */ 1088 callout_reset(&fd->sc_motoron_ch, hz / 4, 1089 fd_motor_on, fd); 1090 return 1; 1091 } 1092 /* Make sure the right drive is selected. */ 1093 fd_set_motor(fdc, 0); 1094 1095 /* fall through */ 1096 case DOSEEK: 1097 doseek: 1098 if (fd->sc_cylin == bp->b_cylinder) 1099 goto doio; 1100 1101 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1102 out_fdc(iot, ioh, fd->sc_type->steprate); 1103 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1104 1105 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1106 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1107 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1108 1109 fd->sc_cylin = -1; 1110 fdc->sc_state = SEEKWAIT; 1111 1112 iostat_seek(fd->sc_dk.dk_stats); 1113 disk_busy(&fd->sc_dk); 1114 1115 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1116 return 1; 1117 1118 case DOIO: 1119 doio: 1120 type = fd->sc_type; 1121 if (finfo) 1122 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1123 (char *)finfo; 1124 sec = fd->sc_blkno % type->seccyl; 1125 nblks = type->seccyl - sec; 1126 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1127 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1128 fd->sc_nblks = nblks; 1129 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1130 head = sec / type->sectrac; 1131 sec -= head * type->sectrac; 1132 #ifdef DIAGNOSTIC 1133 { 1134 int block; 1135 block = (fd->sc_cylin * type->heads + head) 1136 * type->sectrac + sec; 1137 if (block != fd->sc_blkno) { 1138 printf("fdcintr: block %d != blkno " 1139 "%" PRId64 "\n", block, fd->sc_blkno); 1140 #ifdef DDB 1141 Debugger(); 1142 #endif 1143 } 1144 } 1145 #endif 1146 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1147 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1148 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1149 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1150 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1151 #ifdef FD_DEBUG 1152 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1153 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1154 head, sec, nblks); 1155 #endif 1156 if (finfo) { 1157 /* formatting */ 1158 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1159 fdc->sc_errors = 4; 1160 fdcretry(fdc); 1161 goto loop; 1162 } 1163 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1164 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1165 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1166 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1167 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1168 } else { 1169 if (read) 1170 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1171 else 1172 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1173 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1174 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1175 out_fdc(iot, ioh, head); 1176 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1177 out_fdc(iot, ioh, type->secsize);/* sector size */ 1178 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1179 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1180 out_fdc(iot, ioh, type->datalen);/* data length */ 1181 } 1182 fdc->sc_state = IOCOMPLETE; 1183 1184 disk_busy(&fd->sc_dk); 1185 1186 /* allow 2 seconds for operation */ 1187 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1188 return 1; /* will return later */ 1189 1190 case SEEKWAIT: 1191 callout_stop(&fdc->sc_timo_ch); 1192 fdc->sc_state = SEEKCOMPLETE; 1193 /* allow 1/50 second for heads to settle */ 1194 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 1195 return 1; 1196 1197 case SEEKCOMPLETE: 1198 /* no data on seek */ 1199 disk_unbusy(&fd->sc_dk, 0, 0); 1200 1201 /* Make sure seek really happened. */ 1202 out_fdc(iot, ioh, NE7CMD_SENSEI); 1203 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1204 cyl != bp->b_cylinder * fd->sc_type->step) { 1205 #ifdef FD_DEBUG 1206 fdcstatus(fd->sc_dev, 2, "seek failed"); 1207 #endif 1208 fdcretry(fdc); 1209 goto loop; 1210 } 1211 fd->sc_cylin = bp->b_cylinder; 1212 goto doio; 1213 1214 case IOTIMEDOUT: 1215 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1216 case SEEKTIMEDOUT: 1217 case RECALTIMEDOUT: 1218 case RESETTIMEDOUT: 1219 fdcretry(fdc); 1220 goto loop; 1221 1222 case IOCOMPLETE: /* IO DONE, post-analyze */ 1223 callout_stop(&fdc->sc_timo_ch); 1224 1225 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1226 (bp->b_flags & B_READ)); 1227 1228 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1229 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1230 #ifdef FD_DEBUG 1231 fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? 1232 "read failed" : "write failed"); 1233 printf("blkno %llu nblks %d\n", 1234 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1235 #endif 1236 fdcretry(fdc); 1237 goto loop; 1238 } 1239 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1240 if (fdc->sc_errors) { 1241 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1242 fd->sc_skip / FDC_BSIZE, NULL); 1243 printf("\n"); 1244 fdc->sc_errors = 0; 1245 } 1246 fd->sc_blkno += fd->sc_nblks; 1247 fd->sc_skip += fd->sc_nbytes; 1248 fd->sc_bcount -= fd->sc_nbytes; 1249 if (!finfo && fd->sc_bcount > 0) { 1250 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1251 goto doseek; 1252 } 1253 fdfinish(fd, bp); 1254 goto loop; 1255 1256 case DORESET: 1257 /* try a reset, keep motor on */ 1258 fd_set_motor(fdc, 1); 1259 delay(100); 1260 fd_set_motor(fdc, 0); 1261 fdc->sc_state = RESETCOMPLETE; 1262 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1263 return 1; /* will return later */ 1264 1265 case RESETCOMPLETE: 1266 callout_stop(&fdc->sc_timo_ch); 1267 /* clear the controller output buffer */ 1268 for (i = 0; i < 4; i++) { 1269 out_fdc(iot, ioh, NE7CMD_SENSEI); 1270 (void) fdcresult(fdc); 1271 } 1272 1273 /* fall through */ 1274 case DORECAL: 1275 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1276 out_fdc(iot, ioh, fd->sc_drive); 1277 fdc->sc_state = RECALWAIT; 1278 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1279 return 1; /* will return later */ 1280 1281 case RECALWAIT: 1282 callout_stop(&fdc->sc_timo_ch); 1283 fdc->sc_state = RECALCOMPLETE; 1284 /* allow 1/30 second for heads to settle */ 1285 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 1286 return 1; /* will return later */ 1287 1288 case RECALCOMPLETE: 1289 out_fdc(iot, ioh, NE7CMD_SENSEI); 1290 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1291 #ifdef FD_DEBUG 1292 fdcstatus(fd->sc_dev, 2, "recalibrate failed"); 1293 #endif 1294 fdcretry(fdc); 1295 goto loop; 1296 } 1297 fd->sc_cylin = 0; 1298 goto doseek; 1299 1300 case MOTORWAIT: 1301 if (fd->sc_flags & FD_MOTOR_WAIT) 1302 return 1; /* time's not up yet */ 1303 goto doseek; 1304 1305 default: 1306 fdcstatus(fd->sc_dev, 0, "stray interrupt"); 1307 return 1; 1308 } 1309 #undef st0 1310 #undef cyl 1311 1312 out: 1313 cv_signal(&fdc->sc_cv); 1314 return 1; 1315 } 1316 1317 static void 1318 fdcintrcb(void *arg) 1319 { 1320 (void)fdcintr(arg); 1321 } 1322 1323 int 1324 fdcintr(void *arg) 1325 { 1326 int rc; 1327 struct fdc_softc *fdc = arg; 1328 1329 mutex_enter(&fdc->sc_mtx); 1330 rc = fdcintr1(fdc); 1331 mutex_exit(&fdc->sc_mtx); 1332 return rc; 1333 } 1334 1335 void 1336 fdcretry(struct fdc_softc *fdc) 1337 { 1338 struct fd_softc *fd; 1339 struct buf *bp; 1340 1341 fd = TAILQ_FIRST(&fdc->sc_drives); 1342 bp = bufq_peek(fd->sc_q); 1343 1344 if (fd->sc_opts & FDOPT_NORETRY) 1345 goto fail; 1346 switch (fdc->sc_errors) { 1347 case 0: 1348 /* try again */ 1349 fdc->sc_state = DOSEEK; 1350 break; 1351 1352 case 1: case 2: case 3: 1353 /* didn't work; try recalibrating */ 1354 fdc->sc_state = DORECAL; 1355 break; 1356 1357 case 4: 1358 /* still no go; reset the bastard */ 1359 fdc->sc_state = DORESET; 1360 break; 1361 1362 default: 1363 fail: 1364 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1365 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1366 fd->sc_skip / FDC_BSIZE, NULL); 1367 fdcpstatus(7, fdc); 1368 } 1369 1370 bp->b_error = EIO; 1371 fdfinish(fd, bp); 1372 } 1373 fdc->sc_errors++; 1374 } 1375 1376 int 1377 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1378 { 1379 struct fd_softc *fd = 1380 device_lookup_private(&fd_cd, FDUNIT(dev)); 1381 struct fdformat_parms *form_parms; 1382 struct fdformat_cmd *form_cmd; 1383 struct ne7_fd_formb *fd_formb; 1384 struct disklabel buffer; 1385 int error; 1386 unsigned int scratch; 1387 int il[FD_MAX_NSEC + 1]; 1388 int i, j; 1389 #ifdef __HAVE_OLD_DISKLABEL 1390 struct disklabel newlabel; 1391 #endif 1392 1393 error = disk_ioctl(&fd->sc_dk, cmd, addr, flag, l); 1394 if (error != EPASSTHROUGH) 1395 return (error); 1396 1397 switch (cmd) { 1398 case DIOCGDINFO: 1399 #ifdef __HAVE_OLD_DISKLABEL 1400 case ODIOCGDINFO: 1401 #endif 1402 memset(&buffer, 0, sizeof(buffer)); 1403 1404 buffer.d_type = DTYPE_FLOPPY; 1405 buffer.d_secsize = FDC_BSIZE; 1406 buffer.d_nsectors = fd->sc_type->sectrac; 1407 buffer.d_ntracks = fd->sc_type->heads; 1408 buffer.d_ncylinders = fd->sc_type->cyls; 1409 buffer.d_secpercyl = fd->sc_type->seccyl; 1410 buffer.d_secperunit = fd->sc_type->size; 1411 1412 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1413 return EINVAL; 1414 1415 #ifdef __HAVE_OLD_DISKLABEL 1416 if (cmd == ODIOCGDINFO) { 1417 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1418 return ENOTTY; 1419 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1420 } else 1421 #endif 1422 *(struct disklabel *)addr = buffer; 1423 return 0; 1424 1425 case DIOCWLABEL: 1426 if ((flag & FWRITE) == 0) 1427 return EBADF; 1428 /* XXX do something */ 1429 return 0; 1430 1431 case DIOCWDINFO: 1432 #ifdef __HAVE_OLD_DISKLABEL 1433 case ODIOCWDINFO: 1434 #endif 1435 { 1436 struct disklabel *lp; 1437 1438 if ((flag & FWRITE) == 0) 1439 return EBADF; 1440 #ifdef __HAVE_OLD_DISKLABEL 1441 if (cmd == ODIOCWDINFO) { 1442 memset(&newlabel, 0, sizeof newlabel); 1443 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1444 lp = &newlabel; 1445 } else 1446 #endif 1447 lp = (struct disklabel *)addr; 1448 1449 error = setdisklabel(&buffer, lp, 0, NULL); 1450 if (error) 1451 return error; 1452 1453 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1454 return error; 1455 } 1456 1457 case FDIOCGETFORMAT: 1458 form_parms = (struct fdformat_parms *)addr; 1459 form_parms->fdformat_version = FDFORMAT_VERSION; 1460 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1461 form_parms->ncyl = fd->sc_type->cyls; 1462 form_parms->nspt = fd->sc_type->sectrac; 1463 form_parms->ntrk = fd->sc_type->heads; 1464 form_parms->stepspercyl = fd->sc_type->step; 1465 form_parms->gaplen = fd->sc_type->gap2; 1466 form_parms->fillbyte = fd->sc_type->fillbyte; 1467 form_parms->interleave = fd->sc_type->interleave; 1468 switch (fd->sc_type->rate) { 1469 case FDC_500KBPS: 1470 form_parms->xfer_rate = 500 * 1024; 1471 break; 1472 case FDC_300KBPS: 1473 form_parms->xfer_rate = 300 * 1024; 1474 break; 1475 case FDC_250KBPS: 1476 form_parms->xfer_rate = 250 * 1024; 1477 break; 1478 default: 1479 return EINVAL; 1480 } 1481 return 0; 1482 1483 case FDIOCSETFORMAT: 1484 if((flag & FWRITE) == 0) 1485 return EBADF; /* must be opened for writing */ 1486 form_parms = (struct fdformat_parms *)addr; 1487 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1488 return EINVAL; /* wrong version of formatting prog */ 1489 1490 scratch = form_parms->nbps >> 7; 1491 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1492 scratch & ~(1 << (ffs(scratch)-1))) 1493 /* not a power-of-two multiple of 128 */ 1494 return EINVAL; 1495 1496 switch (form_parms->xfer_rate) { 1497 case 500 * 1024: 1498 fd->sc_type->rate = FDC_500KBPS; 1499 break; 1500 case 300 * 1024: 1501 fd->sc_type->rate = FDC_300KBPS; 1502 break; 1503 case 250 * 1024: 1504 fd->sc_type->rate = FDC_250KBPS; 1505 break; 1506 default: 1507 return EINVAL; 1508 } 1509 1510 if (form_parms->nspt > FD_MAX_NSEC || 1511 form_parms->fillbyte > 0xff || 1512 form_parms->interleave > 0xff) 1513 return EINVAL; 1514 fd->sc_type->sectrac = form_parms->nspt; 1515 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1516 return EINVAL; 1517 fd->sc_type->heads = form_parms->ntrk; 1518 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1519 fd->sc_type->secsize = ffs(scratch)-1; 1520 fd->sc_type->gap2 = form_parms->gaplen; 1521 fd->sc_type->cyls = form_parms->ncyl; 1522 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1523 form_parms->nbps / DEV_BSIZE; 1524 fd->sc_type->step = form_parms->stepspercyl; 1525 fd->sc_type->fillbyte = form_parms->fillbyte; 1526 fd->sc_type->interleave = form_parms->interleave; 1527 return 0; 1528 1529 case FDIOCFORMAT_TRACK: 1530 if((flag & FWRITE) == 0) 1531 return EBADF; /* must be opened for writing */ 1532 form_cmd = (struct fdformat_cmd *)addr; 1533 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1534 return EINVAL; /* wrong version of formatting prog */ 1535 1536 if (form_cmd->head >= fd->sc_type->heads || 1537 form_cmd->cylinder >= fd->sc_type->cyls) { 1538 return EINVAL; 1539 } 1540 1541 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1542 M_TEMP, M_NOWAIT); 1543 if (fd_formb == 0) 1544 return ENOMEM; 1545 1546 fd_formb->head = form_cmd->head; 1547 fd_formb->cyl = form_cmd->cylinder; 1548 fd_formb->transfer_rate = fd->sc_type->rate; 1549 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1550 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1551 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1552 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1553 1554 memset(il, 0, sizeof il); 1555 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1556 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1557 j++; 1558 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1559 j += fd->sc_type->interleave; 1560 } 1561 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1562 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1563 fd_formb->fd_formb_headno(i) = form_cmd->head; 1564 fd_formb->fd_formb_secno(i) = il[i+1]; 1565 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1566 } 1567 1568 error = fdformat(dev, fd_formb, l); 1569 free(fd_formb, M_TEMP); 1570 return error; 1571 1572 case FDIOCGETOPTS: /* get drive options */ 1573 *(int *)addr = fd->sc_opts; 1574 return 0; 1575 1576 case FDIOCSETOPTS: /* set drive options */ 1577 fd->sc_opts = *(int *)addr; 1578 return 0; 1579 1580 default: 1581 return ENOTTY; 1582 } 1583 1584 #ifdef DIAGNOSTIC 1585 panic("fdioctl: impossible"); 1586 #endif 1587 } 1588 1589 int 1590 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1591 { 1592 int rv = 0; 1593 struct fd_softc *fd = 1594 device_lookup_private(&fd_cd, FDUNIT(dev)); 1595 struct fd_type *type = fd->sc_type; 1596 struct buf *bp; 1597 1598 /* set up a buffer header for fdstrategy() */ 1599 bp = getiobuf(NULL, false); 1600 if (bp == NULL) 1601 return ENOBUFS; 1602 1603 bp->b_cflags = BC_BUSY; 1604 bp->b_flags = B_PHYS | B_FORMAT; 1605 bp->b_proc = l->l_proc; 1606 bp->b_dev = dev; 1607 1608 /* 1609 * calculate a fake blkno, so fdstrategy() would initiate a 1610 * seek to the requested cylinder 1611 */ 1612 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1613 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1614 1615 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1616 bp->b_data = (void *)finfo; 1617 1618 #ifdef FD_DEBUG 1619 printf("fdformat: blkno %" PRIx64 " count %x\n", 1620 bp->b_blkno, bp->b_bcount); 1621 #endif 1622 1623 /* now do the format */ 1624 fdstrategy(bp); 1625 1626 /* ...and wait for it to complete */ 1627 rv = biowait(bp); 1628 putiobuf(bp); 1629 return rv; 1630 } 1631 1632 /* 1633 * Mountroot hook: prompt the user to enter the root file system 1634 * floppy. 1635 */ 1636 void 1637 fd_mountroot_hook(device_t dev) 1638 { 1639 int c; 1640 1641 printf("Insert filesystem floppy and press return."); 1642 cnpollc(1); 1643 for (;;) { 1644 c = cngetc(); 1645 if ((c == '\r') || (c == '\n')) { 1646 printf("\n"); 1647 break; 1648 } 1649 } 1650 cnpollc(0); 1651 } 1652 1653 static void 1654 fd_set_geometry(struct fd_softc *fd) 1655 { 1656 const struct fd_type *fdt; 1657 1658 fdt = fd->sc_type; 1659 if (fdt == NULL) { 1660 fdt = fd->sc_deftype; 1661 if (fdt == NULL) 1662 return; 1663 } 1664 1665 struct disk_geom *dg = &fd->sc_dk.dk_geom; 1666 1667 memset(dg, 0, sizeof(*dg)); 1668 dg->dg_secperunit = fdt->size; 1669 dg->dg_nsectors = fdt->sectrac; 1670 switch (fdt->secsize) { 1671 case 2: 1672 dg->dg_secsize = 512; 1673 break; 1674 case 3: 1675 dg->dg_secsize = 1024; 1676 break; 1677 default: 1678 break; 1679 } 1680 dg->dg_ntracks = fdt->heads; 1681 dg->dg_ncylinders = fdt->cyls; 1682 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 1683 } 1684