1 /* $NetBSD: fd.c,v 1.108 2015/04/13 16:33:24 riastradh 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 1.108 2015/04/13 16:33:24 riastradh 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/rndsource.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 .d_open = fdopen, 228 .d_close = fdclose, 229 .d_strategy = fdstrategy, 230 .d_ioctl = fdioctl, 231 .d_dump = nodump, 232 .d_psize = nosize, 233 .d_discard = nodiscard, 234 .d_flag = D_DISK 235 }; 236 237 const struct cdevsw fd_cdevsw = { 238 .d_open = fdopen, 239 .d_close = fdclose, 240 .d_read = fdread, 241 .d_write = fdwrite, 242 .d_ioctl = fdioctl, 243 .d_stop = nostop, 244 .d_tty = notty, 245 .d_poll = nopoll, 246 .d_mmap = nommap, 247 .d_kqfilter = nokqfilter, 248 .d_discard = nodiscard, 249 .d_flag = D_DISK 250 }; 251 252 void fdgetdisklabel(struct fd_softc *); 253 int fd_get_parms(struct fd_softc *); 254 void fdstart(struct fd_softc *); 255 256 struct dkdriver fddkdriver = { fdstrategy, NULL }; 257 258 #if defined(i386) || defined(x86_64) 259 const struct fd_type *fd_nvtotype(const char *, int, int); 260 #endif /* i386 || x86_64 */ 261 void fd_set_motor(struct fdc_softc *fdc, int reset); 262 void fd_motor_off(void *arg); 263 void fd_motor_on(void *arg); 264 int fdcresult(struct fdc_softc *fdc); 265 void fdcstart(struct fdc_softc *fdc); 266 void fdcstatus(device_t, int, const char *); 267 void fdctimeout(void *arg); 268 void fdcretry(struct fdc_softc *fdc); 269 void fdfinish(struct fd_softc *fd, struct buf *bp); 270 static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 271 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 272 static void fd_set_geometry(struct fd_softc *fd); 273 274 void fd_mountroot_hook(device_t); 275 276 /* 277 * Arguments passed between fdcattach and fdprobe. 278 */ 279 struct fdc_attach_args { 280 int fa_drive; 281 const struct fd_type *fa_deftype; 282 }; 283 284 /* 285 * Print the location of a disk drive (called just before attaching the 286 * the drive). If `fdc' is not NULL, the drive was found but was not 287 * in the system config file; print the drive name as well. 288 * Return QUIET (config_find ignores this if the device was configured) to 289 * avoid printing `fdN not configured' messages. 290 */ 291 int 292 fdprint(void *aux, const char *fdc) 293 { 294 struct fdc_attach_args *fa = aux; 295 296 if (!fdc) 297 aprint_normal(" drive %d", fa->fa_drive); 298 return QUIET; 299 } 300 301 static bool 302 fdcresume(device_t self, const pmf_qual_t *qual) 303 { 304 struct fdc_softc *fdc = device_private(self); 305 306 mutex_enter(&fdc->sc_mtx); 307 (void)fdcintr1(fdc); 308 mutex_exit(&fdc->sc_mtx); 309 return true; 310 } 311 312 static bool 313 fdcsuspend(device_t self, const pmf_qual_t *qual) 314 { 315 struct fdc_softc *fdc = device_private(self); 316 int drive; 317 struct fd_softc *fd; 318 319 mutex_enter(&fdc->sc_mtx); 320 while (fdc->sc_state != DEVIDLE) 321 cv_wait(&fdc->sc_cv, &fdc->sc_mtx); 322 for (drive = 0; drive < 4; drive++) { 323 if ((fd = fdc->sc_fd[drive]) == NULL) 324 continue; 325 fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); 326 } 327 fd_set_motor(fdc, 0); 328 mutex_exit(&fdc->sc_mtx); 329 return true; 330 } 331 332 void 333 fdc_childdet(device_t self, device_t child) 334 { 335 struct fdc_softc *fdc = device_private(self); 336 struct fd_softc *fd = device_private(child); 337 int drive = fd->sc_drive; 338 339 KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ 340 fdc->sc_fd[drive] = NULL; 341 } 342 343 int 344 fdcdetach(device_t self, int flags) 345 { 346 int rc; 347 struct fdc_softc *fdc = device_private(self); 348 349 if ((rc = config_detach_children(self, flags)) != 0) 350 return rc; 351 352 pmf_device_deregister(self); 353 354 isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); 355 isa_drq_free(fdc->sc_ic, fdc->sc_drq); 356 357 callout_destroy(&fdc->sc_intr_ch); 358 callout_destroy(&fdc->sc_timo_ch); 359 360 cv_destroy(&fdc->sc_cv); 361 mutex_destroy(&fdc->sc_mtx); 362 363 return 0; 364 } 365 366 void 367 fdcattach(struct fdc_softc *fdc) 368 { 369 mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); 370 cv_init(&fdc->sc_cv, "fdcwake"); 371 callout_init(&fdc->sc_timo_ch, 0); 372 callout_init(&fdc->sc_intr_ch, 0); 373 374 fdc->sc_state = DEVIDLE; 375 TAILQ_INIT(&fdc->sc_drives); 376 377 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 378 379 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 380 aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", 381 fdc->sc_drq); 382 return; 383 } 384 385 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 386 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 387 aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); 388 return; 389 } 390 391 config_interrupts(fdc->sc_dev, fdcfinishattach); 392 393 if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { 394 aprint_error_dev(fdc->sc_dev, 395 "cannot set power mgmt handler\n"); 396 } 397 } 398 399 void 400 fdcfinishattach(device_t self) 401 { 402 struct fdc_softc *fdc = device_private(self); 403 bus_space_tag_t iot = fdc->sc_iot; 404 bus_space_handle_t ioh = fdc->sc_ioh; 405 struct fdc_attach_args fa; 406 407 /* 408 * Reset the controller to get it into a known state. Not all 409 * probes necessarily need do this to discover the controller up 410 * front, so don't assume anything. 411 */ 412 413 bus_space_write_1(iot, ioh, fdout, 0); 414 delay(100); 415 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 416 417 /* see if it can handle a command */ 418 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 419 aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); 420 return; 421 } 422 out_fdc(iot, ioh, 0xdf); 423 out_fdc(iot, ioh, 2); 424 425 #if defined(i386) || defined(x86_64) 426 /* 427 * The NVRAM info only tells us about the first two disks on the 428 * `primary' floppy controller. 429 */ 430 /* XXX device_unit() abuse */ 431 if (device_unit(fdc->sc_dev) == 0) { 432 int type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 433 fdc->sc_known = 1; 434 fdc->sc_knownfds[0] = fd_nvtotype(device_xname(fdc->sc_dev), 435 type, 0); 436 if (fdc->sc_knownfds[0] != NULL) 437 fdc->sc_present |= 1; 438 fdc->sc_knownfds[1] = fd_nvtotype(device_xname(fdc->sc_dev), 439 type, 1); 440 if (fdc->sc_knownfds[1] != NULL) 441 fdc->sc_present |= 2; 442 } 443 #endif /* i386 || x86_64 */ 444 445 /* physical limit: four drives per controller. */ 446 fdc->sc_state = PROBING; 447 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 448 if (fdc->sc_known) { 449 if (fdc->sc_present & (1 << fa.fa_drive)) { 450 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 451 config_found(fdc->sc_dev, (void *)&fa, 452 fdprint); 453 } 454 } else { 455 #if defined(atari) 456 /* 457 * Atari has a different ordening, defaults to 1.44 458 */ 459 fa.fa_deftype = &fd_types[2]; 460 #else 461 /* 462 * Default to 1.44MB on Alpha and BeBox. How do we tell 463 * on these platforms? 464 */ 465 fa.fa_deftype = &fd_types[0]; 466 #endif 467 (void)config_found_ia(fdc->sc_dev, "fdc", (void *)&fa, fdprint); 468 } 469 } 470 fdc->sc_state = DEVIDLE; 471 } 472 473 int 474 fdprobe(device_t parent, cfdata_t match, void *aux) 475 { 476 struct fdc_softc *fdc = device_private(parent); 477 cfdata_t cf = match; 478 struct fdc_attach_args *fa = aux; 479 int drive = fa->fa_drive; 480 bus_space_tag_t iot = fdc->sc_iot; 481 bus_space_handle_t ioh = fdc->sc_ioh; 482 int n; 483 484 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 485 cf->cf_loc[FDCCF_DRIVE] != drive) 486 return 0; 487 /* 488 * XXX 489 * This is to work around some odd interactions between this driver 490 * and SMC Ethernet cards. 491 */ 492 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 493 return 0; 494 495 /* Use PNP information if available */ 496 if (fdc->sc_known) 497 return 1; 498 499 mutex_enter(&fdc->sc_mtx); 500 /* toss any interrupt status */ 501 for (n = 0; n < 4; n++) { 502 out_fdc(iot, ioh, NE7CMD_SENSEI); 503 (void) fdcresult(fdc); 504 } 505 /* select drive and turn on motor */ 506 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 507 /* wait for motor to spin up */ 508 /* XXX check sc_probe */ 509 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 510 out_fdc(iot, ioh, NE7CMD_RECAL); 511 out_fdc(iot, ioh, drive); 512 /* wait for recalibrate, up to 2s */ 513 /* XXX check sc_probe */ 514 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 515 #ifdef FD_DEBUG 516 /* XXX */ 517 printf("fdprobe: got intr\n"); 518 #endif 519 } 520 out_fdc(iot, ioh, NE7CMD_SENSEI); 521 n = fdcresult(fdc); 522 #ifdef FD_DEBUG 523 { 524 int i; 525 printf("fdprobe: status"); 526 for (i = 0; i < n; i++) 527 printf(" %x", fdc->sc_status[i]); 528 printf("\n"); 529 } 530 #endif 531 /* turn off motor */ 532 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 533 mutex_exit(&fdc->sc_mtx); 534 535 #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ 536 if (n != 2 || (fdc->sc_status[1] != 0)) 537 return 0; 538 #else 539 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 540 return 0; 541 #endif /* bebox */ 542 543 return 1; 544 } 545 546 /* 547 * Controller is working, and drive responded. Attach it. 548 */ 549 void 550 fdattach(device_t parent, device_t self, void *aux) 551 { 552 struct fdc_softc *fdc = device_private(parent); 553 struct fd_softc *fd = device_private(self); 554 struct fdc_attach_args *fa = aux; 555 const struct fd_type *type = fa->fa_deftype; 556 int drive = fa->fa_drive; 557 558 fd->sc_dev = self; 559 560 callout_init(&fd->sc_motoron_ch, 0); 561 callout_init(&fd->sc_motoroff_ch, 0); 562 563 /* XXX Allow `flags' to override device type? */ 564 565 if (type) 566 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 567 type->cyls, type->heads, type->sectrac); 568 else 569 aprint_normal(": density unknown\n"); 570 571 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 572 fd->sc_cylin = -1; 573 fd->sc_drive = drive; 574 fd->sc_deftype = type; 575 fdc->sc_fd[drive] = fd; 576 577 /* 578 * Initialize and attach the disk structure. 579 */ 580 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 581 disk_attach(&fd->sc_dk); 582 583 /* 584 * Establish a mountroot hook. 585 */ 586 fd->sc_roothook = 587 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 588 589 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 590 RND_TYPE_DISK, RND_FLAG_DEFAULT); 591 592 fd_set_geometry(fd); 593 594 if (!pmf_device_register(self, NULL, NULL)) 595 aprint_error_dev(self, "cannot set power mgmt handler\n"); 596 } 597 598 static int 599 fddetach(device_t self, int flags) 600 { 601 struct fd_softc *fd = device_private(self); 602 int bmaj, cmaj, i, mn; 603 604 fd_motor_off(fd); 605 606 /* locate the major number */ 607 bmaj = bdevsw_lookup_major(&fd_bdevsw); 608 cmaj = cdevsw_lookup_major(&fd_cdevsw); 609 610 /* Nuke the vnodes for any open instances. */ 611 for (i = 0; i < MAXPARTITIONS; i++) { 612 mn = DISKMINOR(device_unit(self), i); 613 vdevgone(bmaj, mn, mn, VBLK); 614 vdevgone(cmaj, mn, mn, VCHR); 615 } 616 617 pmf_device_deregister(self); 618 619 #if 0 /* XXX need to undo at detach? */ 620 fd_set_geometry(fd); 621 #endif 622 623 rnd_detach_source(&fd->rnd_source); 624 625 disk_detach(&fd->sc_dk); 626 disk_destroy(&fd->sc_dk); 627 628 /* Kill off any queued buffers. */ 629 bufq_drain(fd->sc_q); 630 631 bufq_free(fd->sc_q); 632 633 callout_destroy(&fd->sc_motoroff_ch); 634 callout_destroy(&fd->sc_motoron_ch); 635 636 return 0; 637 } 638 639 #if defined(i386) || defined(x86_64) 640 /* 641 * Translate nvram type into internal data structure. Return NULL for 642 * none/unknown/unusable. 643 */ 644 const struct fd_type * 645 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 646 { 647 int type; 648 649 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 650 switch (type) { 651 case NVRAM_DISKETTE_NONE: 652 return NULL; 653 case NVRAM_DISKETTE_12M: 654 return &fd_types[1]; 655 case NVRAM_DISKETTE_TYPE5: 656 case NVRAM_DISKETTE_TYPE6: 657 /* XXX We really ought to handle 2.88MB format. */ 658 case NVRAM_DISKETTE_144M: 659 #if NMCA > 0 660 if (MCA_system) 661 return &mca_fd_types[0]; 662 else 663 #endif /* NMCA > 0 */ 664 return &fd_types[0]; 665 case NVRAM_DISKETTE_360K: 666 return &fd_types[3]; 667 case NVRAM_DISKETTE_720K: 668 #if NMCA > 0 669 if (MCA_system) 670 return &mca_fd_types[1]; 671 else 672 #endif /* NMCA > 0 */ 673 return &fd_types[4]; 674 default: 675 printf("%s: drive %d: unknown device type 0x%x\n", 676 fdc, drive, type); 677 return NULL; 678 } 679 } 680 #endif /* i386 || x86_64 */ 681 682 static const struct fd_type * 683 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 684 { 685 u_int type = FDTYPE(dev); 686 687 if (type > __arraycount(fd_types)) 688 return NULL; 689 return type ? &fd_types[type - 1] : fd->sc_deftype; 690 } 691 692 void 693 fdstrategy(struct buf *bp) 694 { 695 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 696 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 697 int sz; 698 699 /* Valid unit, controller, and request? */ 700 if (bp->b_blkno < 0 || 701 ((bp->b_bcount % FDC_BSIZE) != 0 && 702 (bp->b_flags & B_FORMAT) == 0)) { 703 bp->b_error = EINVAL; 704 goto done; 705 } 706 707 /* If it's a null transfer, return immediately. */ 708 if (bp->b_bcount == 0) 709 goto done; 710 711 sz = howmany(bp->b_bcount, FDC_BSIZE); 712 713 if (bp->b_blkno + sz > fd->sc_type->size) { 714 sz = fd->sc_type->size - bp->b_blkno; 715 if (sz == 0) { 716 /* If exactly at end of disk, return EOF. */ 717 goto done; 718 } 719 if (sz < 0) { 720 /* If past end of disk, return EINVAL. */ 721 bp->b_error = EINVAL; 722 goto done; 723 } 724 /* Otherwise, truncate request. */ 725 bp->b_bcount = sz << DEV_BSHIFT; 726 } 727 728 bp->b_rawblkno = bp->b_blkno; 729 bp->b_cylinder = 730 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 731 732 #ifdef FD_DEBUG 733 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 734 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 735 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 736 #endif 737 738 /* Queue transfer on drive, activate drive and controller if idle. */ 739 mutex_enter(&fdc->sc_mtx); 740 bufq_put(fd->sc_q, bp); 741 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 742 if (fd->sc_active == 0) 743 fdstart(fd); 744 #ifdef DIAGNOSTIC 745 else { 746 if (fdc->sc_state == DEVIDLE) { 747 printf("fdstrategy: controller inactive\n"); 748 fdcstart(fdc); 749 } 750 } 751 #endif 752 mutex_exit(&fdc->sc_mtx); 753 return; 754 755 done: 756 /* Toss transfer; we're done early. */ 757 bp->b_resid = bp->b_bcount; 758 biodone(bp); 759 } 760 761 void 762 fdstart(struct fd_softc *fd) 763 { 764 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 765 int active = !TAILQ_EMPTY(&fdc->sc_drives); 766 767 KASSERT(mutex_owned(&fdc->sc_mtx)); 768 /* Link into controller queue. */ 769 fd->sc_active = 1; 770 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 771 772 /* If controller not already active, start it. */ 773 if (!active) 774 fdcstart(fdc); 775 } 776 777 void 778 fdfinish(struct fd_softc *fd, struct buf *bp) 779 { 780 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 781 782 /* 783 * Move this drive to the end of the queue to give others a `fair' 784 * chance. We only force a switch if N operations are completed while 785 * another drive is waiting to be serviced, since there is a long motor 786 * startup delay whenever we switch. 787 */ 788 (void)bufq_get(fd->sc_q); 789 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 790 fd->sc_ops = 0; 791 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 792 if (bufq_peek(fd->sc_q) != NULL) 793 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 794 else 795 fd->sc_active = 0; 796 } 797 bp->b_resid = fd->sc_bcount; 798 fd->sc_skip = 0; 799 800 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 801 802 biodone(bp); 803 /* turn off motor 5s from now */ 804 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 805 fdc->sc_state = DEVIDLE; 806 } 807 808 int 809 fdread(dev_t dev, struct uio *uio, int flags) 810 { 811 812 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 813 } 814 815 int 816 fdwrite(dev_t dev, struct uio *uio, int flags) 817 { 818 819 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 820 } 821 822 void 823 fd_set_motor(struct fdc_softc *fdc, int reset) 824 { 825 struct fd_softc *fd; 826 u_char status; 827 int n; 828 829 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 830 status = fd->sc_drive; 831 else 832 status = 0; 833 if (!reset) 834 status |= FDO_FRST | FDO_FDMAEN; 835 for (n = 0; n < 4; n++) 836 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 837 status |= FDO_MOEN(n); 838 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 839 } 840 841 void 842 fd_motor_off(void *arg) 843 { 844 struct fd_softc *fd = arg; 845 struct fdc_softc *fdc; 846 847 fdc = device_private(device_parent(fd->sc_dev)); 848 849 mutex_enter(&fdc->sc_mtx); 850 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 851 fd_set_motor(fdc, 0); 852 mutex_exit(&fdc->sc_mtx); 853 } 854 855 void 856 fd_motor_on(void *arg) 857 { 858 struct fd_softc *fd = arg; 859 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 860 861 mutex_enter(&fdc->sc_mtx); 862 fd->sc_flags &= ~FD_MOTOR_WAIT; 863 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 864 (void)fdcintr1(fdc); 865 mutex_exit(&fdc->sc_mtx); 866 } 867 868 int 869 fdcresult(struct fdc_softc *fdc) 870 { 871 bus_space_tag_t iot = fdc->sc_iot; 872 bus_space_handle_t ioh = fdc->sc_ioh; 873 u_char i; 874 u_int j = 100000, 875 n = 0; 876 877 for (; j; j--) { 878 i = bus_space_read_1(iot, ioh, fdsts) & 879 (NE7_DIO | NE7_RQM | NE7_CB); 880 if (i == NE7_RQM) 881 return n; 882 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 883 if (n >= sizeof(fdc->sc_status)) { 884 log(LOG_ERR, "fdcresult: overrun\n"); 885 return -1; 886 } 887 fdc->sc_status[n++] = 888 bus_space_read_1(iot, ioh, fddata); 889 } 890 delay(10); 891 } 892 log(LOG_ERR, "fdcresult: timeout\n"); 893 return -1; 894 } 895 896 int 897 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 898 { 899 u_char i; 900 u_int j = 100000; 901 902 for (; j; j--) { 903 i = bus_space_read_1(iot, ioh, fdsts) & 904 (NE7_DIO | NE7_RQM); 905 if (i == NE7_RQM) { 906 bus_space_write_1(iot, ioh, fddata, x); 907 return 0; 908 } 909 delay(10); 910 } 911 return -1; 912 } 913 914 int 915 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 916 { 917 struct fd_softc *fd; 918 const struct fd_type *type; 919 920 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 921 if (fd == NULL) 922 return (ENXIO); 923 924 type = fd_dev_to_type(fd, dev); 925 if (type == NULL) 926 return ENXIO; 927 928 if ((fd->sc_flags & FD_OPEN) != 0 && 929 memcmp(fd->sc_type, type, sizeof(*type))) 930 return EBUSY; 931 932 fd->sc_type_copy = *type; 933 fd->sc_type = &fd->sc_type_copy; 934 fd->sc_cylin = -1; 935 fd->sc_flags |= FD_OPEN; 936 937 fd_set_geometry(fd); 938 939 return 0; 940 } 941 942 int 943 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 944 { 945 struct fd_softc *fd = 946 device_lookup_private(&fd_cd, FDUNIT(dev)); 947 948 fd->sc_flags &= ~FD_OPEN; 949 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 950 return 0; 951 } 952 953 void 954 fdcstart(struct fdc_softc *fdc) 955 { 956 957 KASSERT(mutex_owned(&fdc->sc_mtx)); 958 959 if (!device_is_active(fdc->sc_dev)) 960 return; 961 962 #ifdef DIAGNOSTIC 963 /* only got here if controller's drive queue was inactive; should 964 be in idle state */ 965 if (fdc->sc_state != DEVIDLE) { 966 printf("fdcstart: not idle\n"); 967 return; 968 } 969 #endif 970 (void)fdcintr1(fdc); 971 } 972 973 static void 974 fdcpstatus(int n, struct fdc_softc *fdc) 975 { 976 char bits[64]; 977 978 switch (n) { 979 case 0: 980 printf("\n"); 981 break; 982 case 2: 983 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 984 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 985 break; 986 case 7: 987 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 988 printf(" (st0 %s", bits); 989 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 990 printf(" st1 %s", bits); 991 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 992 printf(" st2 %s", bits); 993 printf(" cyl %d head %d sec %d)\n", 994 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 995 break; 996 #ifdef DIAGNOSTIC 997 default: 998 printf("\nfdcstatus: weird size"); 999 break; 1000 #endif 1001 } 1002 } 1003 1004 void 1005 fdcstatus(device_t dv, int n, const char *s) 1006 { 1007 struct fdc_softc *fdc = device_private(device_parent(dv)); 1008 1009 if (n == 0) { 1010 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 1011 (void) fdcresult(fdc); 1012 n = 2; 1013 } 1014 fdcpstatus(n, fdc); 1015 1016 aprint_normal_dev(dv, "%s", s); 1017 1018 } 1019 1020 void 1021 fdctimeout(void *arg) 1022 { 1023 struct fdc_softc *fdc = arg; 1024 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1025 1026 mutex_enter(&fdc->sc_mtx); 1027 #ifdef DEBUG 1028 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 1029 #endif 1030 fdcstatus(fd->sc_dev, 0, "timeout"); 1031 1032 if (bufq_peek(fd->sc_q) != NULL) 1033 fdc->sc_state++; 1034 else 1035 fdc->sc_state = DEVIDLE; 1036 1037 (void)fdcintr1(fdc); 1038 mutex_exit(&fdc->sc_mtx); 1039 } 1040 1041 static int 1042 fdcintr1(struct fdc_softc *fdc) 1043 { 1044 #define st0 fdc->sc_status[0] 1045 #define cyl fdc->sc_status[1] 1046 struct fd_softc *fd; 1047 struct buf *bp; 1048 bus_space_tag_t iot = fdc->sc_iot; 1049 bus_space_handle_t ioh = fdc->sc_ioh; 1050 int read, head, sec, i, nblks; 1051 struct fd_type *type; 1052 struct ne7_fd_formb *finfo = NULL; 1053 1054 KASSERT(mutex_owned(&fdc->sc_mtx)); 1055 if (fdc->sc_state == PROBING) { 1056 #ifdef DEBUG 1057 printf("fdcintr: got probe interrupt\n"); 1058 #endif 1059 fdc->sc_probe++; 1060 goto out; 1061 } 1062 1063 loop: 1064 /* Is there a drive for the controller to do a transfer with? */ 1065 fd = TAILQ_FIRST(&fdc->sc_drives); 1066 if (fd == NULL) { 1067 fdc->sc_state = DEVIDLE; 1068 goto out; 1069 } 1070 1071 /* Is there a transfer to this drive? If not, deactivate drive. */ 1072 bp = bufq_peek(fd->sc_q); 1073 if (bp == NULL) { 1074 fd->sc_ops = 0; 1075 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1076 fd->sc_active = 0; 1077 goto loop; 1078 } 1079 1080 if (bp->b_flags & B_FORMAT) 1081 finfo = (struct ne7_fd_formb *)bp->b_data; 1082 1083 switch (fdc->sc_state) { 1084 case DEVIDLE: 1085 fdc->sc_errors = 0; 1086 fd->sc_skip = 0; 1087 fd->sc_bcount = bp->b_bcount; 1088 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1089 callout_stop(&fd->sc_motoroff_ch); 1090 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1091 fdc->sc_state = MOTORWAIT; 1092 return 1; 1093 } 1094 if ((fd->sc_flags & FD_MOTOR) == 0) { 1095 /* Turn on the motor, being careful about pairing. */ 1096 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1097 if (ofd && ofd->sc_flags & FD_MOTOR) { 1098 callout_stop(&ofd->sc_motoroff_ch); 1099 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1100 } 1101 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1102 fd_set_motor(fdc, 0); 1103 fdc->sc_state = MOTORWAIT; 1104 /* Allow .25s for motor to stabilize. */ 1105 callout_reset(&fd->sc_motoron_ch, hz / 4, 1106 fd_motor_on, fd); 1107 return 1; 1108 } 1109 /* Make sure the right drive is selected. */ 1110 fd_set_motor(fdc, 0); 1111 1112 /* fall through */ 1113 case DOSEEK: 1114 doseek: 1115 if (fd->sc_cylin == bp->b_cylinder) 1116 goto doio; 1117 1118 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1119 out_fdc(iot, ioh, fd->sc_type->steprate); 1120 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1121 1122 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1123 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1124 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1125 1126 fd->sc_cylin = -1; 1127 fdc->sc_state = SEEKWAIT; 1128 1129 iostat_seek(fd->sc_dk.dk_stats); 1130 disk_busy(&fd->sc_dk); 1131 1132 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1133 return 1; 1134 1135 case DOIO: 1136 doio: 1137 type = fd->sc_type; 1138 if (finfo) 1139 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1140 (char *)finfo; 1141 sec = fd->sc_blkno % type->seccyl; 1142 nblks = type->seccyl - sec; 1143 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1144 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1145 fd->sc_nblks = nblks; 1146 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1147 head = sec / type->sectrac; 1148 sec -= head * type->sectrac; 1149 #ifdef DIAGNOSTIC 1150 { 1151 int block; 1152 block = (fd->sc_cylin * type->heads + head) 1153 * type->sectrac + sec; 1154 if (block != fd->sc_blkno) { 1155 printf("fdcintr: block %d != blkno " 1156 "%" PRId64 "\n", block, fd->sc_blkno); 1157 #ifdef DDB 1158 Debugger(); 1159 #endif 1160 } 1161 } 1162 #endif 1163 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1164 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1165 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1166 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1167 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1168 #ifdef FD_DEBUG 1169 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1170 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1171 head, sec, nblks); 1172 #endif 1173 if (finfo) { 1174 /* formatting */ 1175 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1176 fdc->sc_errors = 4; 1177 fdcretry(fdc); 1178 goto loop; 1179 } 1180 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1181 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1182 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1183 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1184 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1185 } else { 1186 if (read) 1187 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1188 else 1189 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1190 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1191 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1192 out_fdc(iot, ioh, head); 1193 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1194 out_fdc(iot, ioh, type->secsize);/* sector size */ 1195 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1196 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1197 out_fdc(iot, ioh, type->datalen);/* data length */ 1198 } 1199 fdc->sc_state = IOCOMPLETE; 1200 1201 disk_busy(&fd->sc_dk); 1202 1203 /* allow 2 seconds for operation */ 1204 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1205 return 1; /* will return later */ 1206 1207 case SEEKWAIT: 1208 callout_stop(&fdc->sc_timo_ch); 1209 fdc->sc_state = SEEKCOMPLETE; 1210 /* allow 1/50 second for heads to settle */ 1211 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 1212 return 1; 1213 1214 case SEEKCOMPLETE: 1215 /* no data on seek */ 1216 disk_unbusy(&fd->sc_dk, 0, 0); 1217 1218 /* Make sure seek really happened. */ 1219 out_fdc(iot, ioh, NE7CMD_SENSEI); 1220 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1221 cyl != bp->b_cylinder * fd->sc_type->step) { 1222 #ifdef FD_DEBUG 1223 fdcstatus(fd->sc_dev, 2, "seek failed"); 1224 #endif 1225 fdcretry(fdc); 1226 goto loop; 1227 } 1228 fd->sc_cylin = bp->b_cylinder; 1229 goto doio; 1230 1231 case IOTIMEDOUT: 1232 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1233 case SEEKTIMEDOUT: 1234 case RECALTIMEDOUT: 1235 case RESETTIMEDOUT: 1236 fdcretry(fdc); 1237 goto loop; 1238 1239 case IOCOMPLETE: /* IO DONE, post-analyze */ 1240 callout_stop(&fdc->sc_timo_ch); 1241 1242 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1243 (bp->b_flags & B_READ)); 1244 1245 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1246 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1247 #ifdef FD_DEBUG 1248 fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? 1249 "read failed" : "write failed"); 1250 printf("blkno %llu nblks %d\n", 1251 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1252 #endif 1253 fdcretry(fdc); 1254 goto loop; 1255 } 1256 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1257 if (fdc->sc_errors) { 1258 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1259 fd->sc_skip / FDC_BSIZE, NULL); 1260 printf("\n"); 1261 fdc->sc_errors = 0; 1262 } 1263 fd->sc_blkno += fd->sc_nblks; 1264 fd->sc_skip += fd->sc_nbytes; 1265 fd->sc_bcount -= fd->sc_nbytes; 1266 if (!finfo && fd->sc_bcount > 0) { 1267 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1268 goto doseek; 1269 } 1270 fdfinish(fd, bp); 1271 goto loop; 1272 1273 case DORESET: 1274 /* try a reset, keep motor on */ 1275 fd_set_motor(fdc, 1); 1276 delay(100); 1277 fd_set_motor(fdc, 0); 1278 fdc->sc_state = RESETCOMPLETE; 1279 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1280 return 1; /* will return later */ 1281 1282 case RESETCOMPLETE: 1283 callout_stop(&fdc->sc_timo_ch); 1284 /* clear the controller output buffer */ 1285 for (i = 0; i < 4; i++) { 1286 out_fdc(iot, ioh, NE7CMD_SENSEI); 1287 (void) fdcresult(fdc); 1288 } 1289 1290 /* fall through */ 1291 case DORECAL: 1292 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1293 out_fdc(iot, ioh, fd->sc_drive); 1294 fdc->sc_state = RECALWAIT; 1295 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1296 return 1; /* will return later */ 1297 1298 case RECALWAIT: 1299 callout_stop(&fdc->sc_timo_ch); 1300 fdc->sc_state = RECALCOMPLETE; 1301 /* allow 1/30 second for heads to settle */ 1302 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 1303 return 1; /* will return later */ 1304 1305 case RECALCOMPLETE: 1306 out_fdc(iot, ioh, NE7CMD_SENSEI); 1307 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1308 #ifdef FD_DEBUG 1309 fdcstatus(fd->sc_dev, 2, "recalibrate failed"); 1310 #endif 1311 fdcretry(fdc); 1312 goto loop; 1313 } 1314 fd->sc_cylin = 0; 1315 goto doseek; 1316 1317 case MOTORWAIT: 1318 if (fd->sc_flags & FD_MOTOR_WAIT) 1319 return 1; /* time's not up yet */ 1320 goto doseek; 1321 1322 default: 1323 fdcstatus(fd->sc_dev, 0, "stray interrupt"); 1324 return 1; 1325 } 1326 #undef st0 1327 #undef cyl 1328 1329 out: 1330 cv_signal(&fdc->sc_cv); 1331 return 1; 1332 } 1333 1334 static void 1335 fdcintrcb(void *arg) 1336 { 1337 (void)fdcintr(arg); 1338 } 1339 1340 int 1341 fdcintr(void *arg) 1342 { 1343 int rc; 1344 struct fdc_softc *fdc = arg; 1345 1346 mutex_enter(&fdc->sc_mtx); 1347 rc = fdcintr1(fdc); 1348 mutex_exit(&fdc->sc_mtx); 1349 return rc; 1350 } 1351 1352 void 1353 fdcretry(struct fdc_softc *fdc) 1354 { 1355 struct fd_softc *fd; 1356 struct buf *bp; 1357 1358 fd = TAILQ_FIRST(&fdc->sc_drives); 1359 bp = bufq_peek(fd->sc_q); 1360 1361 if (fd->sc_opts & FDOPT_NORETRY) 1362 goto fail; 1363 switch (fdc->sc_errors) { 1364 case 0: 1365 /* try again */ 1366 fdc->sc_state = DOSEEK; 1367 break; 1368 1369 case 1: case 2: case 3: 1370 /* didn't work; try recalibrating */ 1371 fdc->sc_state = DORECAL; 1372 break; 1373 1374 case 4: 1375 /* still no go; reset the bastard */ 1376 fdc->sc_state = DORESET; 1377 break; 1378 1379 default: 1380 fail: 1381 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1382 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1383 fd->sc_skip / FDC_BSIZE, NULL); 1384 fdcpstatus(7, fdc); 1385 } 1386 1387 bp->b_error = EIO; 1388 fdfinish(fd, bp); 1389 } 1390 fdc->sc_errors++; 1391 } 1392 1393 int 1394 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1395 { 1396 struct fd_softc *fd = 1397 device_lookup_private(&fd_cd, FDUNIT(dev)); 1398 struct fdformat_parms *form_parms; 1399 struct fdformat_cmd *form_cmd; 1400 struct ne7_fd_formb *fd_formb; 1401 struct disklabel *lp = fd->sc_dk.dk_label; 1402 int error; 1403 unsigned int scratch; 1404 int il[FD_MAX_NSEC + 1]; 1405 int i, j; 1406 #ifdef __HAVE_OLD_DISKLABEL 1407 struct disklabel newlabel; 1408 #endif 1409 1410 switch (cmd) { 1411 case DIOCGPART: 1412 case DIOCGDINFO: 1413 #ifdef __HAVE_OLD_DISKLABEL 1414 case ODIOCGDINFO: 1415 #endif 1416 memset(lp, 0, sizeof(*lp)); 1417 1418 lp->d_type = DKTYPE_FLOPPY; 1419 lp->d_secsize = FDC_BSIZE; 1420 lp->d_nsectors = fd->sc_type->sectrac; 1421 lp->d_ntracks = fd->sc_type->heads; 1422 lp->d_ncylinders = fd->sc_type->cyls; 1423 lp->d_secpercyl = fd->sc_type->seccyl; 1424 lp->d_secperunit = fd->sc_type->size; 1425 1426 if (readdisklabel(dev, fdstrategy, lp, NULL) != NULL) 1427 return EINVAL; 1428 break; 1429 } 1430 1431 error = disk_ioctl(&fd->sc_dk, dev, cmd, addr, flag, l); 1432 if (error != EPASSTHROUGH) 1433 return error; 1434 1435 switch (cmd) { 1436 case DIOCWLABEL: 1437 if ((flag & FWRITE) == 0) 1438 return EBADF; 1439 /* XXX do something */ 1440 return 0; 1441 1442 case DIOCWDINFO: 1443 #ifdef __HAVE_OLD_DISKLABEL 1444 case ODIOCWDINFO: 1445 #endif 1446 { 1447 if ((flag & FWRITE) == 0) 1448 return EBADF; 1449 #ifdef __HAVE_OLD_DISKLABEL 1450 if (cmd == ODIOCWDINFO) { 1451 memset(&newlabel, 0, sizeof newlabel); 1452 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1453 addr = &newlabel; 1454 } 1455 #endif 1456 error = setdisklabel(lp, addr, 0, NULL); 1457 if (error) 1458 return error; 1459 1460 error = writedisklabel(dev, fdstrategy, lp, NULL); 1461 return error; 1462 } 1463 1464 case FDIOCGETFORMAT: 1465 form_parms = (struct fdformat_parms *)addr; 1466 form_parms->fdformat_version = FDFORMAT_VERSION; 1467 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1468 form_parms->ncyl = fd->sc_type->cyls; 1469 form_parms->nspt = fd->sc_type->sectrac; 1470 form_parms->ntrk = fd->sc_type->heads; 1471 form_parms->stepspercyl = fd->sc_type->step; 1472 form_parms->gaplen = fd->sc_type->gap2; 1473 form_parms->fillbyte = fd->sc_type->fillbyte; 1474 form_parms->interleave = fd->sc_type->interleave; 1475 switch (fd->sc_type->rate) { 1476 case FDC_500KBPS: 1477 form_parms->xfer_rate = 500 * 1024; 1478 break; 1479 case FDC_300KBPS: 1480 form_parms->xfer_rate = 300 * 1024; 1481 break; 1482 case FDC_250KBPS: 1483 form_parms->xfer_rate = 250 * 1024; 1484 break; 1485 default: 1486 return EINVAL; 1487 } 1488 return 0; 1489 1490 case FDIOCSETFORMAT: 1491 if((flag & FWRITE) == 0) 1492 return EBADF; /* must be opened for writing */ 1493 form_parms = (struct fdformat_parms *)addr; 1494 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1495 return EINVAL; /* wrong version of formatting prog */ 1496 1497 scratch = form_parms->nbps >> 7; 1498 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1499 scratch & ~(1 << (ffs(scratch)-1))) 1500 /* not a power-of-two multiple of 128 */ 1501 return EINVAL; 1502 1503 switch (form_parms->xfer_rate) { 1504 case 500 * 1024: 1505 fd->sc_type->rate = FDC_500KBPS; 1506 break; 1507 case 300 * 1024: 1508 fd->sc_type->rate = FDC_300KBPS; 1509 break; 1510 case 250 * 1024: 1511 fd->sc_type->rate = FDC_250KBPS; 1512 break; 1513 default: 1514 return EINVAL; 1515 } 1516 1517 if (form_parms->nspt > FD_MAX_NSEC || 1518 form_parms->fillbyte > 0xff || 1519 form_parms->interleave > 0xff) 1520 return EINVAL; 1521 fd->sc_type->sectrac = form_parms->nspt; 1522 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1523 return EINVAL; 1524 fd->sc_type->heads = form_parms->ntrk; 1525 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1526 fd->sc_type->secsize = ffs(scratch)-1; 1527 fd->sc_type->gap2 = form_parms->gaplen; 1528 fd->sc_type->cyls = form_parms->ncyl; 1529 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1530 form_parms->nbps / DEV_BSIZE; 1531 fd->sc_type->step = form_parms->stepspercyl; 1532 fd->sc_type->fillbyte = form_parms->fillbyte; 1533 fd->sc_type->interleave = form_parms->interleave; 1534 return 0; 1535 1536 case FDIOCFORMAT_TRACK: 1537 if((flag & FWRITE) == 0) 1538 return EBADF; /* must be opened for writing */ 1539 form_cmd = (struct fdformat_cmd *)addr; 1540 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1541 return EINVAL; /* wrong version of formatting prog */ 1542 1543 if (form_cmd->head >= fd->sc_type->heads || 1544 form_cmd->cylinder >= fd->sc_type->cyls) { 1545 return EINVAL; 1546 } 1547 1548 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1549 M_TEMP, M_NOWAIT); 1550 if (fd_formb == 0) 1551 return ENOMEM; 1552 1553 fd_formb->head = form_cmd->head; 1554 fd_formb->cyl = form_cmd->cylinder; 1555 fd_formb->transfer_rate = fd->sc_type->rate; 1556 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1557 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1558 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1559 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1560 1561 memset(il, 0, sizeof il); 1562 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1563 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1564 j++; 1565 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1566 j += fd->sc_type->interleave; 1567 } 1568 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1569 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1570 fd_formb->fd_formb_headno(i) = form_cmd->head; 1571 fd_formb->fd_formb_secno(i) = il[i+1]; 1572 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1573 } 1574 1575 error = fdformat(dev, fd_formb, l); 1576 free(fd_formb, M_TEMP); 1577 return error; 1578 1579 case FDIOCGETOPTS: /* get drive options */ 1580 *(int *)addr = fd->sc_opts; 1581 return 0; 1582 1583 case FDIOCSETOPTS: /* set drive options */ 1584 fd->sc_opts = *(int *)addr; 1585 return 0; 1586 1587 default: 1588 return ENOTTY; 1589 } 1590 1591 #ifdef DIAGNOSTIC 1592 panic("fdioctl: impossible"); 1593 #endif 1594 } 1595 1596 int 1597 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1598 { 1599 int rv = 0; 1600 struct fd_softc *fd = 1601 device_lookup_private(&fd_cd, FDUNIT(dev)); 1602 struct fd_type *type = fd->sc_type; 1603 struct buf *bp; 1604 1605 /* set up a buffer header for fdstrategy() */ 1606 bp = getiobuf(NULL, false); 1607 if (bp == NULL) 1608 return ENOBUFS; 1609 1610 bp->b_cflags = BC_BUSY; 1611 bp->b_flags = B_PHYS | B_FORMAT; 1612 bp->b_proc = l->l_proc; 1613 bp->b_dev = dev; 1614 1615 /* 1616 * calculate a fake blkno, so fdstrategy() would initiate a 1617 * seek to the requested cylinder 1618 */ 1619 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1620 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1621 1622 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1623 bp->b_data = (void *)finfo; 1624 1625 #ifdef FD_DEBUG 1626 printf("fdformat: blkno %" PRIx64 " count %x\n", 1627 bp->b_blkno, bp->b_bcount); 1628 #endif 1629 1630 /* now do the format */ 1631 fdstrategy(bp); 1632 1633 /* ...and wait for it to complete */ 1634 rv = biowait(bp); 1635 putiobuf(bp); 1636 return rv; 1637 } 1638 1639 /* 1640 * Mountroot hook: prompt the user to enter the root file system 1641 * floppy. 1642 */ 1643 void 1644 fd_mountroot_hook(device_t dev) 1645 { 1646 int c; 1647 1648 printf("Insert filesystem floppy and press return."); 1649 cnpollc(1); 1650 for (;;) { 1651 c = cngetc(); 1652 if ((c == '\r') || (c == '\n')) { 1653 printf("\n"); 1654 break; 1655 } 1656 } 1657 cnpollc(0); 1658 } 1659 1660 static void 1661 fd_set_geometry(struct fd_softc *fd) 1662 { 1663 const struct fd_type *fdt; 1664 1665 fdt = fd->sc_type; 1666 if (fdt == NULL) { 1667 fdt = fd->sc_deftype; 1668 if (fdt == NULL) 1669 return; 1670 } 1671 1672 struct disk_geom *dg = &fd->sc_dk.dk_geom; 1673 1674 memset(dg, 0, sizeof(*dg)); 1675 dg->dg_secperunit = fdt->size; 1676 dg->dg_nsectors = fdt->sectrac; 1677 switch (fdt->secsize) { 1678 case 2: 1679 dg->dg_secsize = 512; 1680 break; 1681 case 3: 1682 dg->dg_secsize = 1024; 1683 break; 1684 default: 1685 break; 1686 } 1687 dg->dg_ntracks = fdt->heads; 1688 dg->dg_ncylinders = fdt->cyls; 1689 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 1690 } 1691