1 /* $NetBSD: fd.c,v 1.99 2010/11/13 13:52:03 uebayasi 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 1.99 2010/11/13 13:52:03 uebayasi Exp $"); 85 86 #include "rnd.h" 87 #include "opt_ddb.h" 88 89 /* 90 * XXX This driver should be properly MI'd some day, but this allows us 91 * XXX to eliminate a lot of code duplication for now. 92 */ 93 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 94 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 95 !defined(prep) && !defined(sandpoint) && !defined(x86_64) && \ 96 !defined(mvmeppc) && !defined(ofppc) 97 #error platform not supported by this driver, yet 98 #endif 99 100 #include <sys/param.h> 101 #include <sys/systm.h> 102 #include <sys/callout.h> 103 #include <sys/kernel.h> 104 #include <sys/file.h> 105 #include <sys/ioctl.h> 106 #include <sys/device.h> 107 #include <sys/disklabel.h> 108 #include <sys/disk.h> 109 #include <sys/buf.h> 110 #include <sys/bufq.h> 111 #include <sys/malloc.h> 112 #include <sys/uio.h> 113 #include <sys/syslog.h> 114 #include <sys/queue.h> 115 #include <sys/proc.h> 116 #include <sys/fdio.h> 117 #include <sys/conf.h> 118 #include <sys/vnode.h> 119 #if NRND > 0 120 #include <sys/rnd.h> 121 #endif 122 123 #include <prop/proplib.h> 124 125 #include <dev/cons.h> 126 127 #include <sys/cpu.h> 128 #include <sys/bus.h> 129 130 #include "locators.h" 131 132 #if defined(atari) 133 /* 134 * On the atari, it is configured as fdcisa 135 */ 136 #define FDCCF_DRIVE FDCISACF_DRIVE 137 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 138 139 #define fd_cd fdisa_cd 140 #endif /* atari */ 141 142 #include <sys/intr.h> 143 144 #include <dev/isa/isavar.h> 145 #include <dev/isa/isadmavar.h> 146 147 #include <dev/isa/fdreg.h> 148 #include <dev/isa/fdcvar.h> 149 150 #if defined(i386) || defined(x86_64) 151 152 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 153 #include <i386/isa/nvram.h> 154 155 #if defined(i386) 156 #include "mca.h" 157 #if NMCA > 0 158 #include <machine/mca_machdep.h> /* for MCA_system */ 159 #endif 160 #endif 161 162 #endif /* i386 || x86_64 */ 163 164 #include <dev/isa/fdvar.h> 165 166 #define FDUNIT(dev) (minor(dev) / 8) 167 #define FDTYPE(dev) (minor(dev) % 8) 168 169 /* (mis)use device use flag to identify format operation */ 170 #define B_FORMAT B_DEVPRIVATE 171 172 /* controller driver configuration */ 173 int fdprint(void *, const char *); 174 175 #if NMCA > 0 176 /* MCA - specific entries */ 177 const struct fd_type mca_fd_types[] = { 178 { 18,2,36,2,0xff,0x0f,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette - XXX try 16ms step rate */ 179 { 9,2,18,2,0xff,0x4f,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette - XXX try 24ms step rate */ 180 }; 181 #endif /* NMCA > 0 */ 182 183 /* The order of entries in the following table is important -- BEWARE! */ 184 185 #if defined(atari) 186 const struct fd_type fd_types[] = { 187 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 188 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 189 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 190 }; 191 #else 192 const struct fd_type fd_types[] = { 193 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 194 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 195 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 196 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 197 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 198 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 199 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 200 }; 201 #endif /* defined(atari) */ 202 203 void fdcfinishattach(device_t); 204 int fdprobe(device_t, cfdata_t, void *); 205 void fdattach(device_t, device_t, void *); 206 static int fddetach(device_t, int); 207 static int fdcintr1(struct fdc_softc *); 208 static void fdcintrcb(void *); 209 static bool fdcsuspend(device_t, const pmf_qual_t *); 210 static bool fdcresume(device_t, const pmf_qual_t *); 211 212 extern struct cfdriver fd_cd; 213 214 #ifdef atari 215 CFATTACH_DECL_NEW(fdisa, sizeof(struct fd_softc), 216 fdprobe, fdattach, fddetach, NULL); 217 #else 218 CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), 219 fdprobe, fdattach, fddetach, NULL); 220 #endif 221 222 dev_type_open(fdopen); 223 dev_type_close(fdclose); 224 dev_type_read(fdread); 225 dev_type_write(fdwrite); 226 dev_type_ioctl(fdioctl); 227 dev_type_strategy(fdstrategy); 228 229 const struct bdevsw fd_bdevsw = { 230 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 231 }; 232 233 const struct cdevsw fd_cdevsw = { 234 fdopen, fdclose, fdread, fdwrite, fdioctl, 235 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 236 }; 237 238 void fdgetdisklabel(struct fd_softc *); 239 int fd_get_parms(struct fd_softc *); 240 void fdstart(struct fd_softc *); 241 242 struct dkdriver fddkdriver = { fdstrategy, NULL }; 243 244 #if defined(i386) || defined(x86_64) 245 const struct fd_type *fd_nvtotype(const char *, int, int); 246 #endif /* i386 || x86_64 */ 247 void fd_set_motor(struct fdc_softc *fdc, int reset); 248 void fd_motor_off(void *arg); 249 void fd_motor_on(void *arg); 250 int fdcresult(struct fdc_softc *fdc); 251 void fdcstart(struct fdc_softc *fdc); 252 void fdcstatus(device_t, int, const char *); 253 void fdctimeout(void *arg); 254 void fdcretry(struct fdc_softc *fdc); 255 void fdfinish(struct fd_softc *fd, struct buf *bp); 256 static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 257 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 258 static void fd_set_properties(struct fd_softc *fd); 259 260 void fd_mountroot_hook(device_t); 261 262 /* 263 * Arguments passed between fdcattach and fdprobe. 264 */ 265 struct fdc_attach_args { 266 int fa_drive; 267 const struct fd_type *fa_deftype; 268 }; 269 270 /* 271 * Print the location of a disk drive (called just before attaching the 272 * the drive). If `fdc' is not NULL, the drive was found but was not 273 * in the system config file; print the drive name as well. 274 * Return QUIET (config_find ignores this if the device was configured) to 275 * avoid printing `fdN not configured' messages. 276 */ 277 int 278 fdprint(void *aux, const char *fdc) 279 { 280 struct fdc_attach_args *fa = aux; 281 282 if (!fdc) 283 aprint_normal(" drive %d", fa->fa_drive); 284 return QUIET; 285 } 286 287 static bool 288 fdcresume(device_t self, const pmf_qual_t *qual) 289 { 290 struct fdc_softc *fdc = device_private(self); 291 292 mutex_enter(&fdc->sc_mtx); 293 (void)fdcintr1(fdc); 294 mutex_exit(&fdc->sc_mtx); 295 return true; 296 } 297 298 static bool 299 fdcsuspend(device_t self, const pmf_qual_t *qual) 300 { 301 struct fdc_softc *fdc = device_private(self); 302 int drive; 303 struct fd_softc *fd; 304 305 mutex_enter(&fdc->sc_mtx); 306 while (fdc->sc_state != DEVIDLE) 307 cv_wait(&fdc->sc_cv, &fdc->sc_mtx); 308 for (drive = 0; drive < 4; drive++) { 309 if ((fd = fdc->sc_fd[drive]) == NULL) 310 continue; 311 fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); 312 } 313 fd_set_motor(fdc, 0); 314 mutex_exit(&fdc->sc_mtx); 315 return true; 316 } 317 318 void 319 fdc_childdet(device_t self, device_t child) 320 { 321 struct fdc_softc *fdc = device_private(self); 322 struct fd_softc *fd = device_private(child); 323 int drive = fd->sc_drive; 324 325 KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ 326 fdc->sc_fd[drive] = NULL; 327 } 328 329 int 330 fdcdetach(device_t self, int flags) 331 { 332 int rc; 333 struct fdc_softc *fdc = device_private(self); 334 335 if ((rc = config_detach_children(self, flags)) != 0) 336 return rc; 337 338 pmf_device_deregister(self); 339 340 isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); 341 isa_drq_free(fdc->sc_ic, fdc->sc_drq); 342 343 callout_destroy(&fdc->sc_intr_ch); 344 callout_destroy(&fdc->sc_timo_ch); 345 346 cv_destroy(&fdc->sc_cv); 347 mutex_destroy(&fdc->sc_mtx); 348 349 return 0; 350 } 351 352 void 353 fdcattach(struct fdc_softc *fdc) 354 { 355 mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); 356 cv_init(&fdc->sc_cv, "fdcwake"); 357 callout_init(&fdc->sc_timo_ch, 0); 358 callout_init(&fdc->sc_intr_ch, 0); 359 360 fdc->sc_state = DEVIDLE; 361 TAILQ_INIT(&fdc->sc_drives); 362 363 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 364 365 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 366 aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", 367 fdc->sc_drq); 368 return; 369 } 370 371 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 372 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 373 aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); 374 return; 375 } 376 377 config_interrupts(fdc->sc_dev, fdcfinishattach); 378 379 if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { 380 aprint_error_dev(fdc->sc_dev, 381 "cannot set power mgmt handler\n"); 382 } 383 } 384 385 void 386 fdcfinishattach(device_t self) 387 { 388 struct fdc_softc *fdc = device_private(self); 389 bus_space_tag_t iot = fdc->sc_iot; 390 bus_space_handle_t ioh = fdc->sc_ioh; 391 struct fdc_attach_args fa; 392 393 /* 394 * Reset the controller to get it into a known state. Not all 395 * probes necessarily need do this to discover the controller up 396 * front, so don't assume anything. 397 */ 398 399 bus_space_write_1(iot, ioh, fdout, 0); 400 delay(100); 401 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 402 403 /* see if it can handle a command */ 404 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 405 aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); 406 return; 407 } 408 out_fdc(iot, ioh, 0xdf); 409 out_fdc(iot, ioh, 2); 410 411 #if defined(i386) || defined(x86_64) 412 /* 413 * The NVRAM info only tells us about the first two disks on the 414 * `primary' floppy controller. 415 */ 416 /* XXX device_unit() abuse */ 417 if (device_unit(fdc->sc_dev) == 0) { 418 int type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 419 fdc->sc_known = 1; 420 fdc->sc_knownfds[0] = fd_nvtotype(device_xname(fdc->sc_dev), 421 type, 0); 422 if (fdc->sc_knownfds[0] != NULL) 423 fdc->sc_present |= 1; 424 fdc->sc_knownfds[1] = fd_nvtotype(device_xname(fdc->sc_dev), 425 type, 1); 426 if (fdc->sc_knownfds[1] != NULL) 427 fdc->sc_present |= 2; 428 } 429 #endif /* i386 || x86_64 */ 430 431 /* physical limit: four drives per controller. */ 432 fdc->sc_state = PROBING; 433 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 434 if (fdc->sc_known) { 435 if (fdc->sc_present & (1 << fa.fa_drive)) { 436 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 437 config_found(fdc->sc_dev, (void *)&fa, 438 fdprint); 439 } 440 } else { 441 #if defined(atari) 442 /* 443 * Atari has a different ordening, defaults to 1.44 444 */ 445 fa.fa_deftype = &fd_types[2]; 446 #else 447 /* 448 * Default to 1.44MB on Alpha and BeBox. How do we tell 449 * on these platforms? 450 */ 451 fa.fa_deftype = &fd_types[0]; 452 #endif 453 (void)config_found_ia(fdc->sc_dev, "fdc", (void *)&fa, fdprint); 454 } 455 } 456 fdc->sc_state = DEVIDLE; 457 } 458 459 int 460 fdprobe(device_t parent, cfdata_t match, void *aux) 461 { 462 struct fdc_softc *fdc = device_private(parent); 463 cfdata_t cf = match; 464 struct fdc_attach_args *fa = aux; 465 int drive = fa->fa_drive; 466 bus_space_tag_t iot = fdc->sc_iot; 467 bus_space_handle_t ioh = fdc->sc_ioh; 468 int n; 469 470 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 471 cf->cf_loc[FDCCF_DRIVE] != drive) 472 return 0; 473 /* 474 * XXX 475 * This is to work around some odd interactions between this driver 476 * and SMC Ethernet cards. 477 */ 478 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 479 return 0; 480 481 /* Use PNP information if available */ 482 if (fdc->sc_known) 483 return 1; 484 485 mutex_enter(&fdc->sc_mtx); 486 /* toss any interrupt status */ 487 for (n = 0; n < 4; n++) { 488 out_fdc(iot, ioh, NE7CMD_SENSEI); 489 (void) fdcresult(fdc); 490 } 491 /* select drive and turn on motor */ 492 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 493 /* wait for motor to spin up */ 494 /* XXX check sc_probe */ 495 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 496 out_fdc(iot, ioh, NE7CMD_RECAL); 497 out_fdc(iot, ioh, drive); 498 /* wait for recalibrate, up to 2s */ 499 /* XXX check sc_probe */ 500 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 501 #ifdef FD_DEBUG 502 /* XXX */ 503 printf("fdprobe: got intr\n"); 504 #endif 505 } 506 out_fdc(iot, ioh, NE7CMD_SENSEI); 507 n = fdcresult(fdc); 508 #ifdef FD_DEBUG 509 { 510 int i; 511 printf("fdprobe: status"); 512 for (i = 0; i < n; i++) 513 printf(" %x", fdc->sc_status[i]); 514 printf("\n"); 515 } 516 #endif 517 /* turn off motor */ 518 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 519 mutex_exit(&fdc->sc_mtx); 520 521 #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ 522 if (n != 2 || (fdc->sc_status[1] != 0)) 523 return 0; 524 #else 525 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 526 return 0; 527 #endif /* bebox */ 528 529 return 1; 530 } 531 532 /* 533 * Controller is working, and drive responded. Attach it. 534 */ 535 void 536 fdattach(device_t parent, device_t self, void *aux) 537 { 538 struct fdc_softc *fdc = device_private(parent); 539 struct fd_softc *fd = device_private(self); 540 struct fdc_attach_args *fa = aux; 541 const struct fd_type *type = fa->fa_deftype; 542 int drive = fa->fa_drive; 543 544 fd->sc_dev = self; 545 546 callout_init(&fd->sc_motoron_ch, 0); 547 callout_init(&fd->sc_motoroff_ch, 0); 548 549 /* XXX Allow `flags' to override device type? */ 550 551 if (type) 552 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 553 type->cyls, type->heads, type->sectrac); 554 else 555 aprint_normal(": density unknown\n"); 556 557 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 558 fd->sc_cylin = -1; 559 fd->sc_drive = drive; 560 fd->sc_deftype = type; 561 fdc->sc_fd[drive] = fd; 562 563 /* 564 * Initialize and attach the disk structure. 565 */ 566 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 567 disk_attach(&fd->sc_dk); 568 569 /* 570 * Establish a mountroot hook. 571 */ 572 fd->sc_roothook = 573 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 574 575 #if NRND > 0 576 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 577 RND_TYPE_DISK, 0); 578 #endif 579 580 fd_set_properties(fd); 581 582 if (!pmf_device_register(self, NULL, NULL)) 583 aprint_error_dev(self, "cannot set power mgmt handler\n"); 584 } 585 586 static int 587 fddetach(device_t self, int flags) 588 { 589 struct fd_softc *fd = device_private(self); 590 int bmaj, cmaj, i, mn; 591 592 fd_motor_off(fd); 593 594 /* locate the major number */ 595 bmaj = bdevsw_lookup_major(&fd_bdevsw); 596 cmaj = cdevsw_lookup_major(&fd_cdevsw); 597 598 /* Nuke the vnodes for any open instances. */ 599 for (i = 0; i < MAXPARTITIONS; i++) { 600 mn = DISKMINOR(device_unit(self), i); 601 vdevgone(bmaj, mn, mn, VBLK); 602 vdevgone(cmaj, mn, mn, VCHR); 603 } 604 605 pmf_device_deregister(self); 606 607 #if 0 /* XXX need to undo at detach? */ 608 fd_set_properties(fd); 609 #endif 610 #if NRND > 0 611 rnd_detach_source(&fd->rnd_source); 612 #endif 613 614 disk_detach(&fd->sc_dk); 615 disk_destroy(&fd->sc_dk); 616 617 /* Kill off any queued buffers. */ 618 bufq_drain(fd->sc_q); 619 620 bufq_free(fd->sc_q); 621 622 callout_destroy(&fd->sc_motoroff_ch); 623 callout_destroy(&fd->sc_motoron_ch); 624 625 return 0; 626 } 627 628 #if defined(i386) || defined(x86_64) 629 /* 630 * Translate nvram type into internal data structure. Return NULL for 631 * none/unknown/unusable. 632 */ 633 const struct fd_type * 634 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 635 { 636 int type; 637 638 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 639 switch (type) { 640 case NVRAM_DISKETTE_NONE: 641 return NULL; 642 case NVRAM_DISKETTE_12M: 643 return &fd_types[1]; 644 case NVRAM_DISKETTE_TYPE5: 645 case NVRAM_DISKETTE_TYPE6: 646 /* XXX We really ought to handle 2.88MB format. */ 647 case NVRAM_DISKETTE_144M: 648 #if NMCA > 0 649 if (MCA_system) 650 return &mca_fd_types[0]; 651 else 652 #endif /* NMCA > 0 */ 653 return &fd_types[0]; 654 case NVRAM_DISKETTE_360K: 655 return &fd_types[3]; 656 case NVRAM_DISKETTE_720K: 657 #if NMCA > 0 658 if (MCA_system) 659 return &mca_fd_types[1]; 660 else 661 #endif /* NMCA > 0 */ 662 return &fd_types[4]; 663 default: 664 printf("%s: drive %d: unknown device type 0x%x\n", 665 fdc, drive, type); 666 return NULL; 667 } 668 } 669 #endif /* i386 || x86_64 */ 670 671 static const struct fd_type * 672 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 673 { 674 u_int type = FDTYPE(dev); 675 676 if (type > __arraycount(fd_types)) 677 return NULL; 678 return type ? &fd_types[type - 1] : fd->sc_deftype; 679 } 680 681 void 682 fdstrategy(struct buf *bp) 683 { 684 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 685 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 686 int sz; 687 688 /* Valid unit, controller, and request? */ 689 if (bp->b_blkno < 0 || 690 ((bp->b_bcount % FDC_BSIZE) != 0 && 691 (bp->b_flags & B_FORMAT) == 0)) { 692 bp->b_error = EINVAL; 693 goto done; 694 } 695 696 /* If it's a null transfer, return immediately. */ 697 if (bp->b_bcount == 0) 698 goto done; 699 700 sz = howmany(bp->b_bcount, FDC_BSIZE); 701 702 if (bp->b_blkno + sz > fd->sc_type->size) { 703 sz = fd->sc_type->size - bp->b_blkno; 704 if (sz == 0) { 705 /* If exactly at end of disk, return EOF. */ 706 goto done; 707 } 708 if (sz < 0) { 709 /* If past end of disk, return EINVAL. */ 710 bp->b_error = EINVAL; 711 goto done; 712 } 713 /* Otherwise, truncate request. */ 714 bp->b_bcount = sz << DEV_BSHIFT; 715 } 716 717 bp->b_rawblkno = bp->b_blkno; 718 bp->b_cylinder = 719 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 720 721 #ifdef FD_DEBUG 722 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 723 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 724 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 725 #endif 726 727 /* Queue transfer on drive, activate drive and controller if idle. */ 728 mutex_enter(&fdc->sc_mtx); 729 bufq_put(fd->sc_q, bp); 730 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 731 if (fd->sc_active == 0) 732 fdstart(fd); 733 #ifdef DIAGNOSTIC 734 else { 735 if (fdc->sc_state == DEVIDLE) { 736 printf("fdstrategy: controller inactive\n"); 737 fdcstart(fdc); 738 } 739 } 740 #endif 741 mutex_exit(&fdc->sc_mtx); 742 return; 743 744 done: 745 /* Toss transfer; we're done early. */ 746 bp->b_resid = bp->b_bcount; 747 biodone(bp); 748 } 749 750 void 751 fdstart(struct fd_softc *fd) 752 { 753 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 754 int active = !TAILQ_EMPTY(&fdc->sc_drives); 755 756 KASSERT(mutex_owned(&fdc->sc_mtx)); 757 /* Link into controller queue. */ 758 fd->sc_active = 1; 759 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 760 761 /* If controller not already active, start it. */ 762 if (!active) 763 fdcstart(fdc); 764 } 765 766 void 767 fdfinish(struct fd_softc *fd, struct buf *bp) 768 { 769 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 770 771 /* 772 * Move this drive to the end of the queue to give others a `fair' 773 * chance. We only force a switch if N operations are completed while 774 * another drive is waiting to be serviced, since there is a long motor 775 * startup delay whenever we switch. 776 */ 777 (void)bufq_get(fd->sc_q); 778 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 779 fd->sc_ops = 0; 780 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 781 if (bufq_peek(fd->sc_q) != NULL) 782 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 783 else 784 fd->sc_active = 0; 785 } 786 bp->b_resid = fd->sc_bcount; 787 fd->sc_skip = 0; 788 789 #if NRND > 0 790 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 791 #endif 792 793 biodone(bp); 794 /* turn off motor 5s from now */ 795 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 796 fdc->sc_state = DEVIDLE; 797 } 798 799 int 800 fdread(dev_t dev, struct uio *uio, int flags) 801 { 802 803 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 804 } 805 806 int 807 fdwrite(dev_t dev, struct uio *uio, int flags) 808 { 809 810 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 811 } 812 813 void 814 fd_set_motor(struct fdc_softc *fdc, int reset) 815 { 816 struct fd_softc *fd; 817 u_char status; 818 int n; 819 820 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 821 status = fd->sc_drive; 822 else 823 status = 0; 824 if (!reset) 825 status |= FDO_FRST | FDO_FDMAEN; 826 for (n = 0; n < 4; n++) 827 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 828 status |= FDO_MOEN(n); 829 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 830 } 831 832 void 833 fd_motor_off(void *arg) 834 { 835 struct fd_softc *fd = arg; 836 struct fdc_softc *fdc; 837 838 fdc = device_private(device_parent(fd->sc_dev)); 839 840 mutex_enter(&fdc->sc_mtx); 841 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 842 fd_set_motor(fdc, 0); 843 mutex_exit(&fdc->sc_mtx); 844 } 845 846 void 847 fd_motor_on(void *arg) 848 { 849 struct fd_softc *fd = arg; 850 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 851 852 mutex_enter(&fdc->sc_mtx); 853 fd->sc_flags &= ~FD_MOTOR_WAIT; 854 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 855 (void)fdcintr1(fdc); 856 mutex_exit(&fdc->sc_mtx); 857 } 858 859 int 860 fdcresult(struct fdc_softc *fdc) 861 { 862 bus_space_tag_t iot = fdc->sc_iot; 863 bus_space_handle_t ioh = fdc->sc_ioh; 864 u_char i; 865 u_int j = 100000, 866 n = 0; 867 868 for (; j; j--) { 869 i = bus_space_read_1(iot, ioh, fdsts) & 870 (NE7_DIO | NE7_RQM | NE7_CB); 871 if (i == NE7_RQM) 872 return n; 873 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 874 if (n >= sizeof(fdc->sc_status)) { 875 log(LOG_ERR, "fdcresult: overrun\n"); 876 return -1; 877 } 878 fdc->sc_status[n++] = 879 bus_space_read_1(iot, ioh, fddata); 880 } 881 delay(10); 882 } 883 log(LOG_ERR, "fdcresult: timeout\n"); 884 return -1; 885 } 886 887 int 888 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 889 { 890 u_char i; 891 u_int j = 100000; 892 893 for (; j; j--) { 894 i = bus_space_read_1(iot, ioh, fdsts) & 895 (NE7_DIO | NE7_RQM); 896 if (i == NE7_RQM) { 897 bus_space_write_1(iot, ioh, fddata, x); 898 return 0; 899 } 900 delay(10); 901 } 902 return -1; 903 } 904 905 int 906 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 907 { 908 struct fd_softc *fd; 909 const struct fd_type *type; 910 911 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 912 if (fd == NULL) 913 return (ENXIO); 914 915 type = fd_dev_to_type(fd, dev); 916 if (type == NULL) 917 return ENXIO; 918 919 if ((fd->sc_flags & FD_OPEN) != 0 && 920 memcmp(fd->sc_type, type, sizeof(*type))) 921 return EBUSY; 922 923 fd->sc_type_copy = *type; 924 fd->sc_type = &fd->sc_type_copy; 925 fd->sc_cylin = -1; 926 fd->sc_flags |= FD_OPEN; 927 928 fd_set_properties(fd); 929 930 return 0; 931 } 932 933 int 934 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 935 { 936 struct fd_softc *fd = 937 device_lookup_private(&fd_cd, FDUNIT(dev)); 938 939 fd->sc_flags &= ~FD_OPEN; 940 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 941 return 0; 942 } 943 944 void 945 fdcstart(struct fdc_softc *fdc) 946 { 947 948 KASSERT(mutex_owned(&fdc->sc_mtx)); 949 950 if (!device_is_active(fdc->sc_dev)) 951 return; 952 953 #ifdef DIAGNOSTIC 954 /* only got here if controller's drive queue was inactive; should 955 be in idle state */ 956 if (fdc->sc_state != DEVIDLE) { 957 printf("fdcstart: not idle\n"); 958 return; 959 } 960 #endif 961 (void)fdcintr1(fdc); 962 } 963 964 static void 965 fdcpstatus(int n, struct fdc_softc *fdc) 966 { 967 char bits[64]; 968 969 switch (n) { 970 case 0: 971 printf("\n"); 972 break; 973 case 2: 974 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 975 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 976 break; 977 case 7: 978 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 979 printf(" (st0 %s", bits); 980 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 981 printf(" st1 %s", bits); 982 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 983 printf(" st2 %s", bits); 984 printf(" cyl %d head %d sec %d)\n", 985 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 986 break; 987 #ifdef DIAGNOSTIC 988 default: 989 printf("\nfdcstatus: weird size"); 990 break; 991 #endif 992 } 993 } 994 995 void 996 fdcstatus(device_t dv, int n, const char *s) 997 { 998 struct fdc_softc *fdc = device_private(device_parent(dv)); 999 1000 if (n == 0) { 1001 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 1002 (void) fdcresult(fdc); 1003 n = 2; 1004 } 1005 fdcpstatus(n, fdc); 1006 1007 aprint_normal_dev(dv, "%s", s); 1008 1009 } 1010 1011 void 1012 fdctimeout(void *arg) 1013 { 1014 struct fdc_softc *fdc = arg; 1015 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1016 1017 mutex_enter(&fdc->sc_mtx); 1018 #ifdef DEBUG 1019 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 1020 #endif 1021 fdcstatus(fd->sc_dev, 0, "timeout"); 1022 1023 if (bufq_peek(fd->sc_q) != NULL) 1024 fdc->sc_state++; 1025 else 1026 fdc->sc_state = DEVIDLE; 1027 1028 (void)fdcintr1(fdc); 1029 mutex_exit(&fdc->sc_mtx); 1030 } 1031 1032 static int 1033 fdcintr1(struct fdc_softc *fdc) 1034 { 1035 #define st0 fdc->sc_status[0] 1036 #define cyl fdc->sc_status[1] 1037 struct fd_softc *fd; 1038 struct buf *bp; 1039 bus_space_tag_t iot = fdc->sc_iot; 1040 bus_space_handle_t ioh = fdc->sc_ioh; 1041 int read, head, sec, i, nblks; 1042 struct fd_type *type; 1043 struct ne7_fd_formb *finfo = NULL; 1044 1045 KASSERT(mutex_owned(&fdc->sc_mtx)); 1046 if (fdc->sc_state == PROBING) { 1047 #ifdef DEBUG 1048 printf("fdcintr: got probe interrupt\n"); 1049 #endif 1050 fdc->sc_probe++; 1051 goto out; 1052 } 1053 1054 loop: 1055 /* Is there a drive for the controller to do a transfer with? */ 1056 fd = TAILQ_FIRST(&fdc->sc_drives); 1057 if (fd == NULL) { 1058 fdc->sc_state = DEVIDLE; 1059 goto out; 1060 } 1061 1062 /* Is there a transfer to this drive? If not, deactivate drive. */ 1063 bp = bufq_peek(fd->sc_q); 1064 if (bp == NULL) { 1065 fd->sc_ops = 0; 1066 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1067 fd->sc_active = 0; 1068 goto loop; 1069 } 1070 1071 if (bp->b_flags & B_FORMAT) 1072 finfo = (struct ne7_fd_formb *)bp->b_data; 1073 1074 switch (fdc->sc_state) { 1075 case DEVIDLE: 1076 fdc->sc_errors = 0; 1077 fd->sc_skip = 0; 1078 fd->sc_bcount = bp->b_bcount; 1079 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1080 callout_stop(&fd->sc_motoroff_ch); 1081 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1082 fdc->sc_state = MOTORWAIT; 1083 return 1; 1084 } 1085 if ((fd->sc_flags & FD_MOTOR) == 0) { 1086 /* Turn on the motor, being careful about pairing. */ 1087 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1088 if (ofd && ofd->sc_flags & FD_MOTOR) { 1089 callout_stop(&ofd->sc_motoroff_ch); 1090 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1091 } 1092 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1093 fd_set_motor(fdc, 0); 1094 fdc->sc_state = MOTORWAIT; 1095 /* Allow .25s for motor to stabilize. */ 1096 callout_reset(&fd->sc_motoron_ch, hz / 4, 1097 fd_motor_on, fd); 1098 return 1; 1099 } 1100 /* Make sure the right drive is selected. */ 1101 fd_set_motor(fdc, 0); 1102 1103 /* fall through */ 1104 case DOSEEK: 1105 doseek: 1106 if (fd->sc_cylin == bp->b_cylinder) 1107 goto doio; 1108 1109 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1110 out_fdc(iot, ioh, fd->sc_type->steprate); 1111 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1112 1113 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1114 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1115 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1116 1117 fd->sc_cylin = -1; 1118 fdc->sc_state = SEEKWAIT; 1119 1120 iostat_seek(fd->sc_dk.dk_stats); 1121 disk_busy(&fd->sc_dk); 1122 1123 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1124 return 1; 1125 1126 case DOIO: 1127 doio: 1128 type = fd->sc_type; 1129 if (finfo) 1130 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1131 (char *)finfo; 1132 sec = fd->sc_blkno % type->seccyl; 1133 nblks = type->seccyl - sec; 1134 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1135 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1136 fd->sc_nblks = nblks; 1137 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1138 head = sec / type->sectrac; 1139 sec -= head * type->sectrac; 1140 #ifdef DIAGNOSTIC 1141 { 1142 int block; 1143 block = (fd->sc_cylin * type->heads + head) 1144 * type->sectrac + sec; 1145 if (block != fd->sc_blkno) { 1146 printf("fdcintr: block %d != blkno " 1147 "%" PRId64 "\n", block, fd->sc_blkno); 1148 #ifdef DDB 1149 Debugger(); 1150 #endif 1151 } 1152 } 1153 #endif 1154 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1155 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1156 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1157 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1158 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1159 #ifdef FD_DEBUG 1160 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1161 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1162 head, sec, nblks); 1163 #endif 1164 if (finfo) { 1165 /* formatting */ 1166 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1167 fdc->sc_errors = 4; 1168 fdcretry(fdc); 1169 goto loop; 1170 } 1171 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1172 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1173 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1174 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1175 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1176 } else { 1177 if (read) 1178 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1179 else 1180 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1181 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1182 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1183 out_fdc(iot, ioh, head); 1184 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1185 out_fdc(iot, ioh, type->secsize);/* sector size */ 1186 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1187 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1188 out_fdc(iot, ioh, type->datalen);/* data length */ 1189 } 1190 fdc->sc_state = IOCOMPLETE; 1191 1192 disk_busy(&fd->sc_dk); 1193 1194 /* allow 2 seconds for operation */ 1195 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1196 return 1; /* will return later */ 1197 1198 case SEEKWAIT: 1199 callout_stop(&fdc->sc_timo_ch); 1200 fdc->sc_state = SEEKCOMPLETE; 1201 /* allow 1/50 second for heads to settle */ 1202 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 1203 return 1; 1204 1205 case SEEKCOMPLETE: 1206 /* no data on seek */ 1207 disk_unbusy(&fd->sc_dk, 0, 0); 1208 1209 /* Make sure seek really happened. */ 1210 out_fdc(iot, ioh, NE7CMD_SENSEI); 1211 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1212 cyl != bp->b_cylinder * fd->sc_type->step) { 1213 #ifdef FD_DEBUG 1214 fdcstatus(fd->sc_dev, 2, "seek failed"); 1215 #endif 1216 fdcretry(fdc); 1217 goto loop; 1218 } 1219 fd->sc_cylin = bp->b_cylinder; 1220 goto doio; 1221 1222 case IOTIMEDOUT: 1223 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1224 case SEEKTIMEDOUT: 1225 case RECALTIMEDOUT: 1226 case RESETTIMEDOUT: 1227 fdcretry(fdc); 1228 goto loop; 1229 1230 case IOCOMPLETE: /* IO DONE, post-analyze */ 1231 callout_stop(&fdc->sc_timo_ch); 1232 1233 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1234 (bp->b_flags & B_READ)); 1235 1236 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1237 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1238 #ifdef FD_DEBUG 1239 fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? 1240 "read failed" : "write failed"); 1241 printf("blkno %llu nblks %d\n", 1242 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1243 #endif 1244 fdcretry(fdc); 1245 goto loop; 1246 } 1247 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1248 if (fdc->sc_errors) { 1249 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1250 fd->sc_skip / FDC_BSIZE, NULL); 1251 printf("\n"); 1252 fdc->sc_errors = 0; 1253 } 1254 fd->sc_blkno += fd->sc_nblks; 1255 fd->sc_skip += fd->sc_nbytes; 1256 fd->sc_bcount -= fd->sc_nbytes; 1257 if (!finfo && fd->sc_bcount > 0) { 1258 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1259 goto doseek; 1260 } 1261 fdfinish(fd, bp); 1262 goto loop; 1263 1264 case DORESET: 1265 /* try a reset, keep motor on */ 1266 fd_set_motor(fdc, 1); 1267 delay(100); 1268 fd_set_motor(fdc, 0); 1269 fdc->sc_state = RESETCOMPLETE; 1270 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1271 return 1; /* will return later */ 1272 1273 case RESETCOMPLETE: 1274 callout_stop(&fdc->sc_timo_ch); 1275 /* clear the controller output buffer */ 1276 for (i = 0; i < 4; i++) { 1277 out_fdc(iot, ioh, NE7CMD_SENSEI); 1278 (void) fdcresult(fdc); 1279 } 1280 1281 /* fall through */ 1282 case DORECAL: 1283 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1284 out_fdc(iot, ioh, fd->sc_drive); 1285 fdc->sc_state = RECALWAIT; 1286 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1287 return 1; /* will return later */ 1288 1289 case RECALWAIT: 1290 callout_stop(&fdc->sc_timo_ch); 1291 fdc->sc_state = RECALCOMPLETE; 1292 /* allow 1/30 second for heads to settle */ 1293 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 1294 return 1; /* will return later */ 1295 1296 case RECALCOMPLETE: 1297 out_fdc(iot, ioh, NE7CMD_SENSEI); 1298 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1299 #ifdef FD_DEBUG 1300 fdcstatus(fd->sc_dev, 2, "recalibrate failed"); 1301 #endif 1302 fdcretry(fdc); 1303 goto loop; 1304 } 1305 fd->sc_cylin = 0; 1306 goto doseek; 1307 1308 case MOTORWAIT: 1309 if (fd->sc_flags & FD_MOTOR_WAIT) 1310 return 1; /* time's not up yet */ 1311 goto doseek; 1312 1313 default: 1314 fdcstatus(fd->sc_dev, 0, "stray interrupt"); 1315 return 1; 1316 } 1317 #undef st0 1318 #undef cyl 1319 1320 out: 1321 cv_signal(&fdc->sc_cv); 1322 return 1; 1323 } 1324 1325 static void 1326 fdcintrcb(void *arg) 1327 { 1328 (void)fdcintr(arg); 1329 } 1330 1331 int 1332 fdcintr(void *arg) 1333 { 1334 int rc; 1335 struct fdc_softc *fdc = arg; 1336 1337 mutex_enter(&fdc->sc_mtx); 1338 rc = fdcintr1(fdc); 1339 mutex_exit(&fdc->sc_mtx); 1340 return rc; 1341 } 1342 1343 void 1344 fdcretry(struct fdc_softc *fdc) 1345 { 1346 struct fd_softc *fd; 1347 struct buf *bp; 1348 1349 fd = TAILQ_FIRST(&fdc->sc_drives); 1350 bp = bufq_peek(fd->sc_q); 1351 1352 if (fd->sc_opts & FDOPT_NORETRY) 1353 goto fail; 1354 switch (fdc->sc_errors) { 1355 case 0: 1356 /* try again */ 1357 fdc->sc_state = DOSEEK; 1358 break; 1359 1360 case 1: case 2: case 3: 1361 /* didn't work; try recalibrating */ 1362 fdc->sc_state = DORECAL; 1363 break; 1364 1365 case 4: 1366 /* still no go; reset the bastard */ 1367 fdc->sc_state = DORESET; 1368 break; 1369 1370 default: 1371 fail: 1372 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1373 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1374 fd->sc_skip / FDC_BSIZE, NULL); 1375 fdcpstatus(7, fdc); 1376 } 1377 1378 bp->b_error = EIO; 1379 fdfinish(fd, bp); 1380 } 1381 fdc->sc_errors++; 1382 } 1383 1384 int 1385 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1386 { 1387 struct fd_softc *fd = 1388 device_lookup_private(&fd_cd, FDUNIT(dev)); 1389 struct fdformat_parms *form_parms; 1390 struct fdformat_cmd *form_cmd; 1391 struct ne7_fd_formb *fd_formb; 1392 struct disklabel buffer; 1393 int error; 1394 unsigned int scratch; 1395 int il[FD_MAX_NSEC + 1]; 1396 int i, j; 1397 #ifdef __HAVE_OLD_DISKLABEL 1398 struct disklabel newlabel; 1399 #endif 1400 1401 error = disk_ioctl(&fd->sc_dk, cmd, addr, flag, l); 1402 if (error != EPASSTHROUGH) 1403 return (error); 1404 1405 switch (cmd) { 1406 case DIOCGDINFO: 1407 #ifdef __HAVE_OLD_DISKLABEL 1408 case ODIOCGDINFO: 1409 #endif 1410 memset(&buffer, 0, sizeof(buffer)); 1411 1412 buffer.d_type = DTYPE_FLOPPY; 1413 buffer.d_secsize = FDC_BSIZE; 1414 buffer.d_nsectors = fd->sc_type->sectrac; 1415 buffer.d_ntracks = fd->sc_type->heads; 1416 buffer.d_ncylinders = fd->sc_type->cyls; 1417 buffer.d_secpercyl = fd->sc_type->seccyl; 1418 buffer.d_secperunit = fd->sc_type->size; 1419 1420 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1421 return EINVAL; 1422 1423 #ifdef __HAVE_OLD_DISKLABEL 1424 if (cmd == ODIOCGDINFO) { 1425 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1426 return ENOTTY; 1427 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1428 } else 1429 #endif 1430 *(struct disklabel *)addr = buffer; 1431 return 0; 1432 1433 case DIOCWLABEL: 1434 if ((flag & FWRITE) == 0) 1435 return EBADF; 1436 /* XXX do something */ 1437 return 0; 1438 1439 case DIOCWDINFO: 1440 #ifdef __HAVE_OLD_DISKLABEL 1441 case ODIOCWDINFO: 1442 #endif 1443 { 1444 struct disklabel *lp; 1445 1446 if ((flag & FWRITE) == 0) 1447 return EBADF; 1448 #ifdef __HAVE_OLD_DISKLABEL 1449 if (cmd == ODIOCWDINFO) { 1450 memset(&newlabel, 0, sizeof newlabel); 1451 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1452 lp = &newlabel; 1453 } else 1454 #endif 1455 lp = (struct disklabel *)addr; 1456 1457 error = setdisklabel(&buffer, lp, 0, NULL); 1458 if (error) 1459 return error; 1460 1461 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1462 return error; 1463 } 1464 1465 case FDIOCGETFORMAT: 1466 form_parms = (struct fdformat_parms *)addr; 1467 form_parms->fdformat_version = FDFORMAT_VERSION; 1468 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1469 form_parms->ncyl = fd->sc_type->cyls; 1470 form_parms->nspt = fd->sc_type->sectrac; 1471 form_parms->ntrk = fd->sc_type->heads; 1472 form_parms->stepspercyl = fd->sc_type->step; 1473 form_parms->gaplen = fd->sc_type->gap2; 1474 form_parms->fillbyte = fd->sc_type->fillbyte; 1475 form_parms->interleave = fd->sc_type->interleave; 1476 switch (fd->sc_type->rate) { 1477 case FDC_500KBPS: 1478 form_parms->xfer_rate = 500 * 1024; 1479 break; 1480 case FDC_300KBPS: 1481 form_parms->xfer_rate = 300 * 1024; 1482 break; 1483 case FDC_250KBPS: 1484 form_parms->xfer_rate = 250 * 1024; 1485 break; 1486 default: 1487 return EINVAL; 1488 } 1489 return 0; 1490 1491 case FDIOCSETFORMAT: 1492 if((flag & FWRITE) == 0) 1493 return EBADF; /* must be opened for writing */ 1494 form_parms = (struct fdformat_parms *)addr; 1495 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1496 return EINVAL; /* wrong version of formatting prog */ 1497 1498 scratch = form_parms->nbps >> 7; 1499 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1500 scratch & ~(1 << (ffs(scratch)-1))) 1501 /* not a power-of-two multiple of 128 */ 1502 return EINVAL; 1503 1504 switch (form_parms->xfer_rate) { 1505 case 500 * 1024: 1506 fd->sc_type->rate = FDC_500KBPS; 1507 break; 1508 case 300 * 1024: 1509 fd->sc_type->rate = FDC_300KBPS; 1510 break; 1511 case 250 * 1024: 1512 fd->sc_type->rate = FDC_250KBPS; 1513 break; 1514 default: 1515 return EINVAL; 1516 } 1517 1518 if (form_parms->nspt > FD_MAX_NSEC || 1519 form_parms->fillbyte > 0xff || 1520 form_parms->interleave > 0xff) 1521 return EINVAL; 1522 fd->sc_type->sectrac = form_parms->nspt; 1523 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1524 return EINVAL; 1525 fd->sc_type->heads = form_parms->ntrk; 1526 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1527 fd->sc_type->secsize = ffs(scratch)-1; 1528 fd->sc_type->gap2 = form_parms->gaplen; 1529 fd->sc_type->cyls = form_parms->ncyl; 1530 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1531 form_parms->nbps / DEV_BSIZE; 1532 fd->sc_type->step = form_parms->stepspercyl; 1533 fd->sc_type->fillbyte = form_parms->fillbyte; 1534 fd->sc_type->interleave = form_parms->interleave; 1535 return 0; 1536 1537 case FDIOCFORMAT_TRACK: 1538 if((flag & FWRITE) == 0) 1539 return EBADF; /* must be opened for writing */ 1540 form_cmd = (struct fdformat_cmd *)addr; 1541 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1542 return EINVAL; /* wrong version of formatting prog */ 1543 1544 if (form_cmd->head >= fd->sc_type->heads || 1545 form_cmd->cylinder >= fd->sc_type->cyls) { 1546 return EINVAL; 1547 } 1548 1549 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1550 M_TEMP, M_NOWAIT); 1551 if (fd_formb == 0) 1552 return ENOMEM; 1553 1554 fd_formb->head = form_cmd->head; 1555 fd_formb->cyl = form_cmd->cylinder; 1556 fd_formb->transfer_rate = fd->sc_type->rate; 1557 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1558 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1559 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1560 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1561 1562 memset(il, 0, sizeof il); 1563 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1564 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1565 j++; 1566 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1567 j += fd->sc_type->interleave; 1568 } 1569 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1570 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1571 fd_formb->fd_formb_headno(i) = form_cmd->head; 1572 fd_formb->fd_formb_secno(i) = il[i+1]; 1573 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1574 } 1575 1576 error = fdformat(dev, fd_formb, l); 1577 free(fd_formb, M_TEMP); 1578 return error; 1579 1580 case FDIOCGETOPTS: /* get drive options */ 1581 *(int *)addr = fd->sc_opts; 1582 return 0; 1583 1584 case FDIOCSETOPTS: /* set drive options */ 1585 fd->sc_opts = *(int *)addr; 1586 return 0; 1587 1588 default: 1589 return ENOTTY; 1590 } 1591 1592 #ifdef DIAGNOSTIC 1593 panic("fdioctl: impossible"); 1594 #endif 1595 } 1596 1597 int 1598 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1599 { 1600 int rv = 0; 1601 struct fd_softc *fd = 1602 device_lookup_private(&fd_cd, FDUNIT(dev)); 1603 struct fd_type *type = fd->sc_type; 1604 struct buf *bp; 1605 1606 /* set up a buffer header for fdstrategy() */ 1607 bp = getiobuf(NULL, false); 1608 if (bp == NULL) 1609 return ENOBUFS; 1610 1611 bp->b_cflags = BC_BUSY; 1612 bp->b_flags = B_PHYS | B_FORMAT; 1613 bp->b_proc = l->l_proc; 1614 bp->b_dev = dev; 1615 1616 /* 1617 * calculate a fake blkno, so fdstrategy() would initiate a 1618 * seek to the requested cylinder 1619 */ 1620 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1621 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1622 1623 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1624 bp->b_data = (void *)finfo; 1625 1626 #ifdef FD_DEBUG 1627 printf("fdformat: blkno %" PRIx64 " count %x\n", 1628 bp->b_blkno, bp->b_bcount); 1629 #endif 1630 1631 /* now do the format */ 1632 fdstrategy(bp); 1633 1634 /* ...and wait for it to complete */ 1635 rv = biowait(bp); 1636 putiobuf(bp); 1637 return rv; 1638 } 1639 1640 /* 1641 * Mountroot hook: prompt the user to enter the root file system 1642 * floppy. 1643 */ 1644 void 1645 fd_mountroot_hook(device_t dev) 1646 { 1647 int c; 1648 1649 printf("Insert filesystem floppy and press return."); 1650 cnpollc(1); 1651 for (;;) { 1652 c = cngetc(); 1653 if ((c == '\r') || (c == '\n')) { 1654 printf("\n"); 1655 break; 1656 } 1657 } 1658 cnpollc(0); 1659 } 1660 1661 static void 1662 fd_set_properties(struct fd_softc *fd) 1663 { 1664 prop_dictionary_t disk_info, odisk_info, geom; 1665 const struct fd_type *fdt; 1666 int secsize; 1667 1668 fdt = fd->sc_type; 1669 if (fdt == NULL) { 1670 fdt = fd->sc_deftype; 1671 if (fdt == NULL) 1672 return; 1673 } 1674 1675 disk_info = prop_dictionary_create(); 1676 1677 geom = prop_dictionary_create(); 1678 1679 prop_dictionary_set_uint64(geom, "sectors-per-unit", 1680 fdt->size); 1681 1682 switch (fdt->secsize) { 1683 case 2: 1684 secsize = 512; 1685 break; 1686 case 3: 1687 secsize = 1024; 1688 break; 1689 default: 1690 secsize = 0; 1691 } 1692 1693 prop_dictionary_set_uint32(geom, "sector-size", 1694 secsize); 1695 1696 prop_dictionary_set_uint16(geom, "sectors-per-track", 1697 fdt->sectrac); 1698 1699 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1700 fdt->heads); 1701 1702 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1703 fdt->cyls); 1704 1705 prop_dictionary_set(disk_info, "geometry", geom); 1706 prop_object_release(geom); 1707 1708 prop_dictionary_set(device_properties(fd->sc_dev), 1709 "disk-info", disk_info); 1710 1711 /* 1712 * Don't release disk_info here; we keep a reference to it. 1713 * disk_detach() will release it when we go away. 1714 */ 1715 1716 odisk_info = fd->sc_dk.dk_info; 1717 fd->sc_dk.dk_info = disk_info; 1718 if (odisk_info) 1719 prop_object_release(odisk_info); 1720 } 1721