1 /* $NetBSD: fd.c,v 1.110 2015/12/08 20:36:15 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Don Ahn. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)fd.c 7.4 (Berkeley) 5/25/91 64 */ 65 66 /* 67 * Floppy formatting facilities merged from FreeBSD fd.c driver: 68 * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp 69 * which carries the same copyright/redistribution notice as shown above with 70 * the addition of the following statement before the "Redistribution and 71 * use ..." clause: 72 * 73 * Copyright (c) 1993, 1994 by 74 * jc@irbs.UUCP (John Capo) 75 * vak@zebub.msk.su (Serge Vakulenko) 76 * ache@astral.msk.su (Andrew A. Chernov) 77 * 78 * Copyright (c) 1993, 1994, 1995 by 79 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 80 * dufault@hda.com (Peter Dufault) 81 */ 82 83 #include <sys/cdefs.h> 84 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.110 2015/12/08 20:36:15 christos Exp $"); 85 86 #include "opt_ddb.h" 87 88 /* 89 * XXX This driver should be properly MI'd some day, but this allows us 90 * XXX to eliminate a lot of code duplication for now. 91 */ 92 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 93 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 94 !defined(prep) && !defined(sandpoint) && !defined(x86_64) && \ 95 !defined(mvmeppc) && !defined(ofppc) 96 #error platform not supported by this driver, yet 97 #endif 98 99 #include <sys/param.h> 100 #include <sys/systm.h> 101 #include <sys/callout.h> 102 #include <sys/kernel.h> 103 #include <sys/file.h> 104 #include <sys/ioctl.h> 105 #include <sys/device.h> 106 #include <sys/disklabel.h> 107 #include <sys/disk.h> 108 #include <sys/buf.h> 109 #include <sys/bufq.h> 110 #include <sys/malloc.h> 111 #include <sys/uio.h> 112 #include <sys/syslog.h> 113 #include <sys/queue.h> 114 #include <sys/proc.h> 115 #include <sys/fdio.h> 116 #include <sys/conf.h> 117 #include <sys/vnode.h> 118 #include <sys/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 = { 257 .d_strategy = fdstrategy, 258 .d_minphys = minphys 259 }; 260 261 #if defined(i386) || defined(x86_64) 262 const struct fd_type *fd_nvtotype(const char *, int, int); 263 #endif /* i386 || x86_64 */ 264 void fd_set_motor(struct fdc_softc *fdc, int reset); 265 void fd_motor_off(void *arg); 266 void fd_motor_on(void *arg); 267 int fdcresult(struct fdc_softc *fdc); 268 void fdcstart(struct fdc_softc *fdc); 269 void fdcstatus(device_t, int, const char *); 270 void fdctimeout(void *arg); 271 void fdcretry(struct fdc_softc *fdc); 272 void fdfinish(struct fd_softc *fd, struct buf *bp); 273 static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 274 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 275 static void fd_set_geometry(struct fd_softc *fd); 276 277 void fd_mountroot_hook(device_t); 278 279 /* 280 * Arguments passed between fdcattach and fdprobe. 281 */ 282 struct fdc_attach_args { 283 int fa_drive; 284 const struct fd_type *fa_deftype; 285 }; 286 287 /* 288 * Print the location of a disk drive (called just before attaching the 289 * the drive). If `fdc' is not NULL, the drive was found but was not 290 * in the system config file; print the drive name as well. 291 * Return QUIET (config_find ignores this if the device was configured) to 292 * avoid printing `fdN not configured' messages. 293 */ 294 int 295 fdprint(void *aux, const char *fdc) 296 { 297 struct fdc_attach_args *fa = aux; 298 299 if (!fdc) 300 aprint_normal(" drive %d", fa->fa_drive); 301 return QUIET; 302 } 303 304 static bool 305 fdcresume(device_t self, const pmf_qual_t *qual) 306 { 307 struct fdc_softc *fdc = device_private(self); 308 309 mutex_enter(&fdc->sc_mtx); 310 (void)fdcintr1(fdc); 311 mutex_exit(&fdc->sc_mtx); 312 return true; 313 } 314 315 static bool 316 fdcsuspend(device_t self, const pmf_qual_t *qual) 317 { 318 struct fdc_softc *fdc = device_private(self); 319 int drive; 320 struct fd_softc *fd; 321 322 mutex_enter(&fdc->sc_mtx); 323 while (fdc->sc_state != DEVIDLE) 324 cv_wait(&fdc->sc_cv, &fdc->sc_mtx); 325 for (drive = 0; drive < 4; drive++) { 326 if ((fd = fdc->sc_fd[drive]) == NULL) 327 continue; 328 fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); 329 } 330 fd_set_motor(fdc, 0); 331 mutex_exit(&fdc->sc_mtx); 332 return true; 333 } 334 335 void 336 fdc_childdet(device_t self, device_t child) 337 { 338 struct fdc_softc *fdc = device_private(self); 339 struct fd_softc *fd = device_private(child); 340 int drive = fd->sc_drive; 341 342 KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ 343 fdc->sc_fd[drive] = NULL; 344 } 345 346 int 347 fdcdetach(device_t self, int flags) 348 { 349 int rc; 350 struct fdc_softc *fdc = device_private(self); 351 352 if ((rc = config_detach_children(self, flags)) != 0) 353 return rc; 354 355 pmf_device_deregister(self); 356 357 isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); 358 isa_drq_free(fdc->sc_ic, fdc->sc_drq); 359 360 callout_destroy(&fdc->sc_intr_ch); 361 callout_destroy(&fdc->sc_timo_ch); 362 363 cv_destroy(&fdc->sc_cv); 364 mutex_destroy(&fdc->sc_mtx); 365 366 return 0; 367 } 368 369 void 370 fdcattach(struct fdc_softc *fdc) 371 { 372 mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); 373 cv_init(&fdc->sc_cv, "fdcwake"); 374 callout_init(&fdc->sc_timo_ch, 0); 375 callout_init(&fdc->sc_intr_ch, 0); 376 377 fdc->sc_state = DEVIDLE; 378 TAILQ_INIT(&fdc->sc_drives); 379 380 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 381 382 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 383 aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", 384 fdc->sc_drq); 385 return; 386 } 387 388 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 389 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 390 aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); 391 return; 392 } 393 394 config_interrupts(fdc->sc_dev, fdcfinishattach); 395 396 if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { 397 aprint_error_dev(fdc->sc_dev, 398 "cannot set power mgmt handler\n"); 399 } 400 } 401 402 void 403 fdcfinishattach(device_t self) 404 { 405 struct fdc_softc *fdc = device_private(self); 406 bus_space_tag_t iot = fdc->sc_iot; 407 bus_space_handle_t ioh = fdc->sc_ioh; 408 struct fdc_attach_args fa; 409 410 /* 411 * Reset the controller to get it into a known state. Not all 412 * probes necessarily need do this to discover the controller up 413 * front, so don't assume anything. 414 */ 415 416 bus_space_write_1(iot, ioh, fdout, 0); 417 delay(100); 418 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 419 420 /* see if it can handle a command */ 421 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 422 aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); 423 return; 424 } 425 out_fdc(iot, ioh, 0xdf); 426 out_fdc(iot, ioh, 2); 427 428 #if defined(i386) || defined(x86_64) 429 /* 430 * The NVRAM info only tells us about the first two disks on the 431 * `primary' floppy controller. 432 */ 433 /* XXX device_unit() abuse */ 434 if (device_unit(fdc->sc_dev) == 0) { 435 int type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 436 fdc->sc_known = 1; 437 fdc->sc_knownfds[0] = fd_nvtotype(device_xname(fdc->sc_dev), 438 type, 0); 439 if (fdc->sc_knownfds[0] != NULL) 440 fdc->sc_present |= 1; 441 fdc->sc_knownfds[1] = fd_nvtotype(device_xname(fdc->sc_dev), 442 type, 1); 443 if (fdc->sc_knownfds[1] != NULL) 444 fdc->sc_present |= 2; 445 } 446 #endif /* i386 || x86_64 */ 447 448 /* physical limit: four drives per controller. */ 449 fdc->sc_state = PROBING; 450 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 451 if (fdc->sc_known) { 452 if (fdc->sc_present & (1 << fa.fa_drive)) { 453 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 454 config_found(fdc->sc_dev, (void *)&fa, 455 fdprint); 456 } 457 } else { 458 #if defined(atari) 459 /* 460 * Atari has a different ordening, defaults to 1.44 461 */ 462 fa.fa_deftype = &fd_types[2]; 463 #else 464 /* 465 * Default to 1.44MB on Alpha and BeBox. How do we tell 466 * on these platforms? 467 */ 468 fa.fa_deftype = &fd_types[0]; 469 #endif 470 (void)config_found_ia(fdc->sc_dev, "fdc", (void *)&fa, fdprint); 471 } 472 } 473 fdc->sc_state = DEVIDLE; 474 } 475 476 int 477 fdprobe(device_t parent, cfdata_t match, void *aux) 478 { 479 struct fdc_softc *fdc = device_private(parent); 480 cfdata_t cf = match; 481 struct fdc_attach_args *fa = aux; 482 int drive = fa->fa_drive; 483 bus_space_tag_t iot = fdc->sc_iot; 484 bus_space_handle_t ioh = fdc->sc_ioh; 485 int n; 486 487 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 488 cf->cf_loc[FDCCF_DRIVE] != drive) 489 return 0; 490 /* 491 * XXX 492 * This is to work around some odd interactions between this driver 493 * and SMC Ethernet cards. 494 */ 495 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 496 return 0; 497 498 /* Use PNP information if available */ 499 if (fdc->sc_known) 500 return 1; 501 502 mutex_enter(&fdc->sc_mtx); 503 /* toss any interrupt status */ 504 for (n = 0; n < 4; n++) { 505 out_fdc(iot, ioh, NE7CMD_SENSEI); 506 (void) fdcresult(fdc); 507 } 508 /* select drive and turn on motor */ 509 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 510 /* wait for motor to spin up */ 511 /* XXX check sc_probe */ 512 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 513 out_fdc(iot, ioh, NE7CMD_RECAL); 514 out_fdc(iot, ioh, drive); 515 /* wait for recalibrate, up to 2s */ 516 /* XXX check sc_probe */ 517 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 518 #ifdef FD_DEBUG 519 /* XXX */ 520 printf("fdprobe: got intr\n"); 521 #endif 522 } 523 out_fdc(iot, ioh, NE7CMD_SENSEI); 524 n = fdcresult(fdc); 525 #ifdef FD_DEBUG 526 { 527 int i; 528 printf("fdprobe: status"); 529 for (i = 0; i < n; i++) 530 printf(" %x", fdc->sc_status[i]); 531 printf("\n"); 532 } 533 #endif 534 /* turn off motor */ 535 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 536 mutex_exit(&fdc->sc_mtx); 537 538 #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ 539 if (n != 2 || (fdc->sc_status[1] != 0)) 540 return 0; 541 #else 542 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 543 return 0; 544 #endif /* bebox */ 545 546 return 1; 547 } 548 549 /* 550 * Controller is working, and drive responded. Attach it. 551 */ 552 void 553 fdattach(device_t parent, device_t self, void *aux) 554 { 555 struct fdc_softc *fdc = device_private(parent); 556 struct fd_softc *fd = device_private(self); 557 struct fdc_attach_args *fa = aux; 558 const struct fd_type *type = fa->fa_deftype; 559 int drive = fa->fa_drive; 560 561 fd->sc_dev = self; 562 563 callout_init(&fd->sc_motoron_ch, 0); 564 callout_init(&fd->sc_motoroff_ch, 0); 565 566 /* XXX Allow `flags' to override device type? */ 567 568 if (type) 569 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 570 type->cyls, type->heads, type->sectrac); 571 else 572 aprint_normal(": density unknown\n"); 573 574 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 575 fd->sc_cylin = -1; 576 fd->sc_drive = drive; 577 fd->sc_deftype = type; 578 fdc->sc_fd[drive] = fd; 579 580 /* 581 * Initialize and attach the disk structure. 582 */ 583 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 584 disk_attach(&fd->sc_dk); 585 586 /* 587 * Establish a mountroot hook. 588 */ 589 fd->sc_roothook = 590 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 591 592 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 593 RND_TYPE_DISK, RND_FLAG_DEFAULT); 594 595 fd_set_geometry(fd); 596 597 if (!pmf_device_register(self, NULL, NULL)) 598 aprint_error_dev(self, "cannot set power mgmt handler\n"); 599 } 600 601 static int 602 fddetach(device_t self, int flags) 603 { 604 struct fd_softc *fd = device_private(self); 605 int bmaj, cmaj, i, mn; 606 607 fd_motor_off(fd); 608 609 /* locate the major number */ 610 bmaj = bdevsw_lookup_major(&fd_bdevsw); 611 cmaj = cdevsw_lookup_major(&fd_cdevsw); 612 613 /* Nuke the vnodes for any open instances. */ 614 for (i = 0; i < MAXPARTITIONS; i++) { 615 mn = DISKMINOR(device_unit(self), i); 616 vdevgone(bmaj, mn, mn, VBLK); 617 vdevgone(cmaj, mn, mn, VCHR); 618 } 619 620 pmf_device_deregister(self); 621 622 #if 0 /* XXX need to undo at detach? */ 623 fd_set_geometry(fd); 624 #endif 625 626 rnd_detach_source(&fd->rnd_source); 627 628 disk_detach(&fd->sc_dk); 629 disk_destroy(&fd->sc_dk); 630 631 /* Kill off any queued buffers. */ 632 bufq_drain(fd->sc_q); 633 634 bufq_free(fd->sc_q); 635 636 callout_destroy(&fd->sc_motoroff_ch); 637 callout_destroy(&fd->sc_motoron_ch); 638 639 return 0; 640 } 641 642 #if defined(i386) || defined(x86_64) 643 /* 644 * Translate nvram type into internal data structure. Return NULL for 645 * none/unknown/unusable. 646 */ 647 const struct fd_type * 648 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 649 { 650 int type; 651 652 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 653 switch (type) { 654 case NVRAM_DISKETTE_NONE: 655 return NULL; 656 case NVRAM_DISKETTE_12M: 657 return &fd_types[1]; 658 case NVRAM_DISKETTE_TYPE5: 659 case NVRAM_DISKETTE_TYPE6: 660 /* XXX We really ought to handle 2.88MB format. */ 661 case NVRAM_DISKETTE_144M: 662 #if NMCA > 0 663 if (MCA_system) 664 return &mca_fd_types[0]; 665 else 666 #endif /* NMCA > 0 */ 667 return &fd_types[0]; 668 case NVRAM_DISKETTE_360K: 669 return &fd_types[3]; 670 case NVRAM_DISKETTE_720K: 671 #if NMCA > 0 672 if (MCA_system) 673 return &mca_fd_types[1]; 674 else 675 #endif /* NMCA > 0 */ 676 return &fd_types[4]; 677 default: 678 printf("%s: drive %d: unknown device type 0x%x\n", 679 fdc, drive, type); 680 return NULL; 681 } 682 } 683 #endif /* i386 || x86_64 */ 684 685 static const struct fd_type * 686 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 687 { 688 u_int type = FDTYPE(dev); 689 690 if (type > __arraycount(fd_types)) 691 return NULL; 692 return type ? &fd_types[type - 1] : fd->sc_deftype; 693 } 694 695 void 696 fdstrategy(struct buf *bp) 697 { 698 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 699 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 700 int sz; 701 702 /* Valid unit, controller, and request? */ 703 if (bp->b_blkno < 0 || 704 ((bp->b_bcount % FDC_BSIZE) != 0 && 705 (bp->b_flags & B_FORMAT) == 0)) { 706 bp->b_error = EINVAL; 707 goto done; 708 } 709 710 /* If it's a null transfer, return immediately. */ 711 if (bp->b_bcount == 0) 712 goto done; 713 714 sz = howmany(bp->b_bcount, FDC_BSIZE); 715 716 if (bp->b_blkno + sz > fd->sc_type->size) { 717 sz = fd->sc_type->size - bp->b_blkno; 718 if (sz == 0) { 719 /* If exactly at end of disk, return EOF. */ 720 goto done; 721 } 722 if (sz < 0) { 723 /* If past end of disk, return EINVAL. */ 724 bp->b_error = EINVAL; 725 goto done; 726 } 727 /* Otherwise, truncate request. */ 728 bp->b_bcount = sz << DEV_BSHIFT; 729 } 730 731 bp->b_rawblkno = bp->b_blkno; 732 bp->b_cylinder = 733 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 734 735 #ifdef FD_DEBUG 736 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 737 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 738 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 739 #endif 740 741 /* Queue transfer on drive, activate drive and controller if idle. */ 742 mutex_enter(&fdc->sc_mtx); 743 bufq_put(fd->sc_q, bp); 744 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 745 if (fd->sc_active == 0) 746 fdstart(fd); 747 #ifdef DIAGNOSTIC 748 else { 749 if (fdc->sc_state == DEVIDLE) { 750 printf("fdstrategy: controller inactive\n"); 751 fdcstart(fdc); 752 } 753 } 754 #endif 755 mutex_exit(&fdc->sc_mtx); 756 return; 757 758 done: 759 /* Toss transfer; we're done early. */ 760 bp->b_resid = bp->b_bcount; 761 biodone(bp); 762 } 763 764 void 765 fdstart(struct fd_softc *fd) 766 { 767 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 768 int active = !TAILQ_EMPTY(&fdc->sc_drives); 769 770 KASSERT(mutex_owned(&fdc->sc_mtx)); 771 /* Link into controller queue. */ 772 fd->sc_active = 1; 773 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 774 775 /* If controller not already active, start it. */ 776 if (!active) 777 fdcstart(fdc); 778 } 779 780 void 781 fdfinish(struct fd_softc *fd, struct buf *bp) 782 { 783 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 784 785 /* 786 * Move this drive to the end of the queue to give others a `fair' 787 * chance. We only force a switch if N operations are completed while 788 * another drive is waiting to be serviced, since there is a long motor 789 * startup delay whenever we switch. 790 */ 791 (void)bufq_get(fd->sc_q); 792 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 793 fd->sc_ops = 0; 794 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 795 if (bufq_peek(fd->sc_q) != NULL) 796 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 797 else 798 fd->sc_active = 0; 799 } 800 bp->b_resid = fd->sc_bcount; 801 fd->sc_skip = 0; 802 803 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 804 805 biodone(bp); 806 /* turn off motor 5s from now */ 807 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 808 fdc->sc_state = DEVIDLE; 809 } 810 811 int 812 fdread(dev_t dev, struct uio *uio, int flags) 813 { 814 815 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 816 } 817 818 int 819 fdwrite(dev_t dev, struct uio *uio, int flags) 820 { 821 822 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 823 } 824 825 void 826 fd_set_motor(struct fdc_softc *fdc, int reset) 827 { 828 struct fd_softc *fd; 829 u_char status; 830 int n; 831 832 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 833 status = fd->sc_drive; 834 else 835 status = 0; 836 if (!reset) 837 status |= FDO_FRST | FDO_FDMAEN; 838 for (n = 0; n < 4; n++) 839 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 840 status |= FDO_MOEN(n); 841 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 842 } 843 844 void 845 fd_motor_off(void *arg) 846 { 847 struct fd_softc *fd = arg; 848 struct fdc_softc *fdc; 849 850 fdc = device_private(device_parent(fd->sc_dev)); 851 852 mutex_enter(&fdc->sc_mtx); 853 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 854 fd_set_motor(fdc, 0); 855 mutex_exit(&fdc->sc_mtx); 856 } 857 858 void 859 fd_motor_on(void *arg) 860 { 861 struct fd_softc *fd = arg; 862 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 863 864 mutex_enter(&fdc->sc_mtx); 865 fd->sc_flags &= ~FD_MOTOR_WAIT; 866 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 867 (void)fdcintr1(fdc); 868 mutex_exit(&fdc->sc_mtx); 869 } 870 871 int 872 fdcresult(struct fdc_softc *fdc) 873 { 874 bus_space_tag_t iot = fdc->sc_iot; 875 bus_space_handle_t ioh = fdc->sc_ioh; 876 u_char i; 877 u_int j = 100000, 878 n = 0; 879 880 for (; j; j--) { 881 i = bus_space_read_1(iot, ioh, fdsts) & 882 (NE7_DIO | NE7_RQM | NE7_CB); 883 if (i == NE7_RQM) 884 return n; 885 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 886 if (n >= sizeof(fdc->sc_status)) { 887 log(LOG_ERR, "fdcresult: overrun\n"); 888 return -1; 889 } 890 fdc->sc_status[n++] = 891 bus_space_read_1(iot, ioh, fddata); 892 } 893 delay(10); 894 } 895 log(LOG_ERR, "fdcresult: timeout\n"); 896 return -1; 897 } 898 899 int 900 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 901 { 902 u_char i; 903 u_int j = 100000; 904 905 for (; j; j--) { 906 i = bus_space_read_1(iot, ioh, fdsts) & 907 (NE7_DIO | NE7_RQM); 908 if (i == NE7_RQM) { 909 bus_space_write_1(iot, ioh, fddata, x); 910 return 0; 911 } 912 delay(10); 913 } 914 return -1; 915 } 916 917 int 918 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 919 { 920 struct fd_softc *fd; 921 const struct fd_type *type; 922 923 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 924 if (fd == NULL) 925 return (ENXIO); 926 927 type = fd_dev_to_type(fd, dev); 928 if (type == NULL) 929 return ENXIO; 930 931 if ((fd->sc_flags & FD_OPEN) != 0 && 932 memcmp(fd->sc_type, type, sizeof(*type))) 933 return EBUSY; 934 935 fd->sc_type_copy = *type; 936 fd->sc_type = &fd->sc_type_copy; 937 fd->sc_cylin = -1; 938 fd->sc_flags |= FD_OPEN; 939 940 fd_set_geometry(fd); 941 942 return 0; 943 } 944 945 int 946 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 947 { 948 struct fd_softc *fd = 949 device_lookup_private(&fd_cd, FDUNIT(dev)); 950 951 fd->sc_flags &= ~FD_OPEN; 952 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 953 return 0; 954 } 955 956 void 957 fdcstart(struct fdc_softc *fdc) 958 { 959 960 KASSERT(mutex_owned(&fdc->sc_mtx)); 961 962 if (!device_is_active(fdc->sc_dev)) 963 return; 964 965 #ifdef DIAGNOSTIC 966 /* only got here if controller's drive queue was inactive; should 967 be in idle state */ 968 if (fdc->sc_state != DEVIDLE) { 969 printf("fdcstart: not idle\n"); 970 return; 971 } 972 #endif 973 (void)fdcintr1(fdc); 974 } 975 976 static void 977 fdcpstatus(int n, struct fdc_softc *fdc) 978 { 979 char bits[64]; 980 981 switch (n) { 982 case 0: 983 printf("\n"); 984 break; 985 case 2: 986 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 987 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 988 break; 989 case 7: 990 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 991 printf(" (st0 %s", bits); 992 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 993 printf(" st1 %s", bits); 994 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 995 printf(" st2 %s", bits); 996 printf(" cyl %d head %d sec %d)\n", 997 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 998 break; 999 #ifdef DIAGNOSTIC 1000 default: 1001 printf("\nfdcstatus: weird size"); 1002 break; 1003 #endif 1004 } 1005 } 1006 1007 void 1008 fdcstatus(device_t dv, int n, const char *s) 1009 { 1010 struct fdc_softc *fdc = device_private(device_parent(dv)); 1011 1012 if (n == 0) { 1013 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 1014 (void) fdcresult(fdc); 1015 n = 2; 1016 } 1017 fdcpstatus(n, fdc); 1018 1019 aprint_normal_dev(dv, "%s", s); 1020 1021 } 1022 1023 void 1024 fdctimeout(void *arg) 1025 { 1026 struct fdc_softc *fdc = arg; 1027 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1028 1029 mutex_enter(&fdc->sc_mtx); 1030 #ifdef DEBUG 1031 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 1032 #endif 1033 fdcstatus(fd->sc_dev, 0, "timeout"); 1034 1035 if (bufq_peek(fd->sc_q) != NULL) 1036 fdc->sc_state++; 1037 else 1038 fdc->sc_state = DEVIDLE; 1039 1040 (void)fdcintr1(fdc); 1041 mutex_exit(&fdc->sc_mtx); 1042 } 1043 1044 static int 1045 fdcintr1(struct fdc_softc *fdc) 1046 { 1047 #define st0 fdc->sc_status[0] 1048 #define cyl fdc->sc_status[1] 1049 struct fd_softc *fd; 1050 struct buf *bp; 1051 bus_space_tag_t iot = fdc->sc_iot; 1052 bus_space_handle_t ioh = fdc->sc_ioh; 1053 int read, head, sec, i, nblks; 1054 struct fd_type *type; 1055 struct ne7_fd_formb *finfo = NULL; 1056 1057 KASSERT(mutex_owned(&fdc->sc_mtx)); 1058 if (fdc->sc_state == PROBING) { 1059 #ifdef DEBUG 1060 printf("fdcintr: got probe interrupt\n"); 1061 #endif 1062 fdc->sc_probe++; 1063 goto out; 1064 } 1065 1066 loop: 1067 /* Is there a drive for the controller to do a transfer with? */ 1068 fd = TAILQ_FIRST(&fdc->sc_drives); 1069 if (fd == NULL) { 1070 fdc->sc_state = DEVIDLE; 1071 goto out; 1072 } 1073 1074 /* Is there a transfer to this drive? If not, deactivate drive. */ 1075 bp = bufq_peek(fd->sc_q); 1076 if (bp == NULL) { 1077 fd->sc_ops = 0; 1078 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1079 fd->sc_active = 0; 1080 goto loop; 1081 } 1082 1083 if (bp->b_flags & B_FORMAT) 1084 finfo = (struct ne7_fd_formb *)bp->b_data; 1085 1086 switch (fdc->sc_state) { 1087 case DEVIDLE: 1088 fdc->sc_errors = 0; 1089 fd->sc_skip = 0; 1090 fd->sc_bcount = bp->b_bcount; 1091 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1092 callout_stop(&fd->sc_motoroff_ch); 1093 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1094 fdc->sc_state = MOTORWAIT; 1095 return 1; 1096 } 1097 if ((fd->sc_flags & FD_MOTOR) == 0) { 1098 /* Turn on the motor, being careful about pairing. */ 1099 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1100 if (ofd && ofd->sc_flags & FD_MOTOR) { 1101 callout_stop(&ofd->sc_motoroff_ch); 1102 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1103 } 1104 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1105 fd_set_motor(fdc, 0); 1106 fdc->sc_state = MOTORWAIT; 1107 /* Allow .25s for motor to stabilize. */ 1108 callout_reset(&fd->sc_motoron_ch, hz / 4, 1109 fd_motor_on, fd); 1110 return 1; 1111 } 1112 /* Make sure the right drive is selected. */ 1113 fd_set_motor(fdc, 0); 1114 1115 /* fall through */ 1116 case DOSEEK: 1117 doseek: 1118 if (fd->sc_cylin == bp->b_cylinder) 1119 goto doio; 1120 1121 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1122 out_fdc(iot, ioh, fd->sc_type->steprate); 1123 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1124 1125 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1126 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1127 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1128 1129 fd->sc_cylin = -1; 1130 fdc->sc_state = SEEKWAIT; 1131 1132 iostat_seek(fd->sc_dk.dk_stats); 1133 disk_busy(&fd->sc_dk); 1134 1135 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1136 return 1; 1137 1138 case DOIO: 1139 doio: 1140 type = fd->sc_type; 1141 if (finfo) 1142 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1143 (char *)finfo; 1144 sec = fd->sc_blkno % type->seccyl; 1145 nblks = type->seccyl - sec; 1146 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1147 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1148 fd->sc_nblks = nblks; 1149 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1150 head = sec / type->sectrac; 1151 sec -= head * type->sectrac; 1152 #ifdef DIAGNOSTIC 1153 { 1154 int block; 1155 block = (fd->sc_cylin * type->heads + head) 1156 * type->sectrac + sec; 1157 if (block != fd->sc_blkno) { 1158 printf("fdcintr: block %d != blkno " 1159 "%" PRId64 "\n", block, fd->sc_blkno); 1160 #ifdef DDB 1161 Debugger(); 1162 #endif 1163 } 1164 } 1165 #endif 1166 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1167 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1168 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1169 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1170 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1171 #ifdef FD_DEBUG 1172 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1173 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1174 head, sec, nblks); 1175 #endif 1176 if (finfo) { 1177 /* formatting */ 1178 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1179 fdc->sc_errors = 4; 1180 fdcretry(fdc); 1181 goto loop; 1182 } 1183 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1184 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1185 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1186 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1187 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1188 } else { 1189 if (read) 1190 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1191 else 1192 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1193 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1194 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1195 out_fdc(iot, ioh, head); 1196 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1197 out_fdc(iot, ioh, type->secsize);/* sector size */ 1198 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1199 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1200 out_fdc(iot, ioh, type->datalen);/* data length */ 1201 } 1202 fdc->sc_state = IOCOMPLETE; 1203 1204 disk_busy(&fd->sc_dk); 1205 1206 /* allow 2 seconds for operation */ 1207 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1208 return 1; /* will return later */ 1209 1210 case SEEKWAIT: 1211 callout_stop(&fdc->sc_timo_ch); 1212 fdc->sc_state = SEEKCOMPLETE; 1213 /* allow 1/50 second for heads to settle */ 1214 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 1215 return 1; 1216 1217 case SEEKCOMPLETE: 1218 /* no data on seek */ 1219 disk_unbusy(&fd->sc_dk, 0, 0); 1220 1221 /* Make sure seek really happened. */ 1222 out_fdc(iot, ioh, NE7CMD_SENSEI); 1223 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1224 cyl != bp->b_cylinder * fd->sc_type->step) { 1225 #ifdef FD_DEBUG 1226 fdcstatus(fd->sc_dev, 2, "seek failed"); 1227 #endif 1228 fdcretry(fdc); 1229 goto loop; 1230 } 1231 fd->sc_cylin = bp->b_cylinder; 1232 goto doio; 1233 1234 case IOTIMEDOUT: 1235 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1236 case SEEKTIMEDOUT: 1237 case RECALTIMEDOUT: 1238 case RESETTIMEDOUT: 1239 fdcretry(fdc); 1240 goto loop; 1241 1242 case IOCOMPLETE: /* IO DONE, post-analyze */ 1243 callout_stop(&fdc->sc_timo_ch); 1244 1245 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1246 (bp->b_flags & B_READ)); 1247 1248 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1249 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1250 #ifdef FD_DEBUG 1251 fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? 1252 "read failed" : "write failed"); 1253 printf("blkno %llu nblks %d\n", 1254 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1255 #endif 1256 fdcretry(fdc); 1257 goto loop; 1258 } 1259 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1260 if (fdc->sc_errors) { 1261 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1262 fd->sc_skip / FDC_BSIZE, NULL); 1263 printf("\n"); 1264 fdc->sc_errors = 0; 1265 } 1266 fd->sc_blkno += fd->sc_nblks; 1267 fd->sc_skip += fd->sc_nbytes; 1268 fd->sc_bcount -= fd->sc_nbytes; 1269 if (!finfo && fd->sc_bcount > 0) { 1270 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1271 goto doseek; 1272 } 1273 fdfinish(fd, bp); 1274 goto loop; 1275 1276 case DORESET: 1277 /* try a reset, keep motor on */ 1278 fd_set_motor(fdc, 1); 1279 delay(100); 1280 fd_set_motor(fdc, 0); 1281 fdc->sc_state = RESETCOMPLETE; 1282 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1283 return 1; /* will return later */ 1284 1285 case RESETCOMPLETE: 1286 callout_stop(&fdc->sc_timo_ch); 1287 /* clear the controller output buffer */ 1288 for (i = 0; i < 4; i++) { 1289 out_fdc(iot, ioh, NE7CMD_SENSEI); 1290 (void) fdcresult(fdc); 1291 } 1292 1293 /* fall through */ 1294 case DORECAL: 1295 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1296 out_fdc(iot, ioh, fd->sc_drive); 1297 fdc->sc_state = RECALWAIT; 1298 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1299 return 1; /* will return later */ 1300 1301 case RECALWAIT: 1302 callout_stop(&fdc->sc_timo_ch); 1303 fdc->sc_state = RECALCOMPLETE; 1304 /* allow 1/30 second for heads to settle */ 1305 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 1306 return 1; /* will return later */ 1307 1308 case RECALCOMPLETE: 1309 out_fdc(iot, ioh, NE7CMD_SENSEI); 1310 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1311 #ifdef FD_DEBUG 1312 fdcstatus(fd->sc_dev, 2, "recalibrate failed"); 1313 #endif 1314 fdcretry(fdc); 1315 goto loop; 1316 } 1317 fd->sc_cylin = 0; 1318 goto doseek; 1319 1320 case MOTORWAIT: 1321 if (fd->sc_flags & FD_MOTOR_WAIT) 1322 return 1; /* time's not up yet */ 1323 goto doseek; 1324 1325 default: 1326 fdcstatus(fd->sc_dev, 0, "stray interrupt"); 1327 return 1; 1328 } 1329 #undef st0 1330 #undef cyl 1331 1332 out: 1333 cv_signal(&fdc->sc_cv); 1334 return 1; 1335 } 1336 1337 static void 1338 fdcintrcb(void *arg) 1339 { 1340 (void)fdcintr(arg); 1341 } 1342 1343 int 1344 fdcintr(void *arg) 1345 { 1346 int rc; 1347 struct fdc_softc *fdc = arg; 1348 1349 mutex_enter(&fdc->sc_mtx); 1350 rc = fdcintr1(fdc); 1351 mutex_exit(&fdc->sc_mtx); 1352 return rc; 1353 } 1354 1355 void 1356 fdcretry(struct fdc_softc *fdc) 1357 { 1358 struct fd_softc *fd; 1359 struct buf *bp; 1360 1361 fd = TAILQ_FIRST(&fdc->sc_drives); 1362 bp = bufq_peek(fd->sc_q); 1363 1364 if (fd->sc_opts & FDOPT_NORETRY) 1365 goto fail; 1366 switch (fdc->sc_errors) { 1367 case 0: 1368 /* try again */ 1369 fdc->sc_state = DOSEEK; 1370 break; 1371 1372 case 1: case 2: case 3: 1373 /* didn't work; try recalibrating */ 1374 fdc->sc_state = DORECAL; 1375 break; 1376 1377 case 4: 1378 /* still no go; reset the bastard */ 1379 fdc->sc_state = DORESET; 1380 break; 1381 1382 default: 1383 fail: 1384 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1385 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1386 fd->sc_skip / FDC_BSIZE, NULL); 1387 fdcpstatus(7, fdc); 1388 } 1389 1390 bp->b_error = EIO; 1391 fdfinish(fd, bp); 1392 } 1393 fdc->sc_errors++; 1394 } 1395 1396 int 1397 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1398 { 1399 struct fd_softc *fd = 1400 device_lookup_private(&fd_cd, FDUNIT(dev)); 1401 struct fdformat_parms *form_parms; 1402 struct fdformat_cmd *form_cmd; 1403 struct ne7_fd_formb *fd_formb; 1404 struct disklabel *lp = fd->sc_dk.dk_label; 1405 int error; 1406 unsigned int scratch; 1407 int il[FD_MAX_NSEC + 1]; 1408 int i, j; 1409 #ifdef __HAVE_OLD_DISKLABEL 1410 struct disklabel newlabel; 1411 #endif 1412 1413 switch (cmd) { 1414 case DIOCGPARTINFO: 1415 case DIOCGDINFO: 1416 #ifdef __HAVE_OLD_DISKLABEL 1417 case ODIOCGDINFO: 1418 #endif 1419 memset(lp, 0, sizeof(*lp)); 1420 1421 lp->d_type = DKTYPE_FLOPPY; 1422 lp->d_secsize = FDC_BSIZE; 1423 lp->d_nsectors = fd->sc_type->sectrac; 1424 lp->d_ntracks = fd->sc_type->heads; 1425 lp->d_ncylinders = fd->sc_type->cyls; 1426 lp->d_secpercyl = fd->sc_type->seccyl; 1427 lp->d_secperunit = fd->sc_type->size; 1428 1429 if (readdisklabel(dev, fdstrategy, lp, NULL) != NULL) 1430 return EINVAL; 1431 break; 1432 } 1433 1434 error = disk_ioctl(&fd->sc_dk, dev, cmd, addr, flag, l); 1435 if (error != EPASSTHROUGH) 1436 return error; 1437 1438 switch (cmd) { 1439 case DIOCWLABEL: 1440 if ((flag & FWRITE) == 0) 1441 return EBADF; 1442 /* XXX do something */ 1443 return 0; 1444 1445 case DIOCWDINFO: 1446 #ifdef __HAVE_OLD_DISKLABEL 1447 case ODIOCWDINFO: 1448 #endif 1449 { 1450 if ((flag & FWRITE) == 0) 1451 return EBADF; 1452 #ifdef __HAVE_OLD_DISKLABEL 1453 if (cmd == ODIOCWDINFO) { 1454 memset(&newlabel, 0, sizeof newlabel); 1455 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1456 addr = &newlabel; 1457 } 1458 #endif 1459 error = setdisklabel(lp, addr, 0, NULL); 1460 if (error) 1461 return error; 1462 1463 error = writedisklabel(dev, fdstrategy, lp, NULL); 1464 return error; 1465 } 1466 1467 case FDIOCGETFORMAT: 1468 form_parms = (struct fdformat_parms *)addr; 1469 form_parms->fdformat_version = FDFORMAT_VERSION; 1470 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1471 form_parms->ncyl = fd->sc_type->cyls; 1472 form_parms->nspt = fd->sc_type->sectrac; 1473 form_parms->ntrk = fd->sc_type->heads; 1474 form_parms->stepspercyl = fd->sc_type->step; 1475 form_parms->gaplen = fd->sc_type->gap2; 1476 form_parms->fillbyte = fd->sc_type->fillbyte; 1477 form_parms->interleave = fd->sc_type->interleave; 1478 switch (fd->sc_type->rate) { 1479 case FDC_500KBPS: 1480 form_parms->xfer_rate = 500 * 1024; 1481 break; 1482 case FDC_300KBPS: 1483 form_parms->xfer_rate = 300 * 1024; 1484 break; 1485 case FDC_250KBPS: 1486 form_parms->xfer_rate = 250 * 1024; 1487 break; 1488 default: 1489 return EINVAL; 1490 } 1491 return 0; 1492 1493 case FDIOCSETFORMAT: 1494 if((flag & FWRITE) == 0) 1495 return EBADF; /* must be opened for writing */ 1496 form_parms = (struct fdformat_parms *)addr; 1497 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1498 return EINVAL; /* wrong version of formatting prog */ 1499 1500 scratch = form_parms->nbps >> 7; 1501 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1502 scratch & ~(1 << (ffs(scratch)-1))) 1503 /* not a power-of-two multiple of 128 */ 1504 return EINVAL; 1505 1506 switch (form_parms->xfer_rate) { 1507 case 500 * 1024: 1508 fd->sc_type->rate = FDC_500KBPS; 1509 break; 1510 case 300 * 1024: 1511 fd->sc_type->rate = FDC_300KBPS; 1512 break; 1513 case 250 * 1024: 1514 fd->sc_type->rate = FDC_250KBPS; 1515 break; 1516 default: 1517 return EINVAL; 1518 } 1519 1520 if (form_parms->nspt > FD_MAX_NSEC || 1521 form_parms->fillbyte > 0xff || 1522 form_parms->interleave > 0xff) 1523 return EINVAL; 1524 fd->sc_type->sectrac = form_parms->nspt; 1525 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1526 return EINVAL; 1527 fd->sc_type->heads = form_parms->ntrk; 1528 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1529 fd->sc_type->secsize = ffs(scratch)-1; 1530 fd->sc_type->gap2 = form_parms->gaplen; 1531 fd->sc_type->cyls = form_parms->ncyl; 1532 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1533 form_parms->nbps / DEV_BSIZE; 1534 fd->sc_type->step = form_parms->stepspercyl; 1535 fd->sc_type->fillbyte = form_parms->fillbyte; 1536 fd->sc_type->interleave = form_parms->interleave; 1537 return 0; 1538 1539 case FDIOCFORMAT_TRACK: 1540 if((flag & FWRITE) == 0) 1541 return EBADF; /* must be opened for writing */ 1542 form_cmd = (struct fdformat_cmd *)addr; 1543 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1544 return EINVAL; /* wrong version of formatting prog */ 1545 1546 if (form_cmd->head >= fd->sc_type->heads || 1547 form_cmd->cylinder >= fd->sc_type->cyls) { 1548 return EINVAL; 1549 } 1550 1551 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1552 M_TEMP, M_NOWAIT); 1553 if (fd_formb == 0) 1554 return ENOMEM; 1555 1556 fd_formb->head = form_cmd->head; 1557 fd_formb->cyl = form_cmd->cylinder; 1558 fd_formb->transfer_rate = fd->sc_type->rate; 1559 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1560 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1561 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1562 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1563 1564 memset(il, 0, sizeof il); 1565 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1566 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1567 j++; 1568 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1569 j += fd->sc_type->interleave; 1570 } 1571 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1572 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1573 fd_formb->fd_formb_headno(i) = form_cmd->head; 1574 fd_formb->fd_formb_secno(i) = il[i+1]; 1575 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1576 } 1577 1578 error = fdformat(dev, fd_formb, l); 1579 free(fd_formb, M_TEMP); 1580 return error; 1581 1582 case FDIOCGETOPTS: /* get drive options */ 1583 *(int *)addr = fd->sc_opts; 1584 return 0; 1585 1586 case FDIOCSETOPTS: /* set drive options */ 1587 fd->sc_opts = *(int *)addr; 1588 return 0; 1589 1590 default: 1591 return ENOTTY; 1592 } 1593 1594 #ifdef DIAGNOSTIC 1595 panic("fdioctl: impossible"); 1596 #endif 1597 } 1598 1599 int 1600 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1601 { 1602 int rv = 0; 1603 struct fd_softc *fd = 1604 device_lookup_private(&fd_cd, FDUNIT(dev)); 1605 struct fd_type *type = fd->sc_type; 1606 struct buf *bp; 1607 1608 /* set up a buffer header for fdstrategy() */ 1609 bp = getiobuf(NULL, false); 1610 if (bp == NULL) 1611 return ENOBUFS; 1612 1613 bp->b_cflags = BC_BUSY; 1614 bp->b_flags = B_PHYS | B_FORMAT; 1615 bp->b_proc = l->l_proc; 1616 bp->b_dev = dev; 1617 1618 /* 1619 * calculate a fake blkno, so fdstrategy() would initiate a 1620 * seek to the requested cylinder 1621 */ 1622 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1623 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1624 1625 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1626 bp->b_data = (void *)finfo; 1627 1628 #ifdef FD_DEBUG 1629 printf("fdformat: blkno %" PRIx64 " count %x\n", 1630 bp->b_blkno, bp->b_bcount); 1631 #endif 1632 1633 /* now do the format */ 1634 fdstrategy(bp); 1635 1636 /* ...and wait for it to complete */ 1637 rv = biowait(bp); 1638 putiobuf(bp); 1639 return rv; 1640 } 1641 1642 /* 1643 * Mountroot hook: prompt the user to enter the root file system 1644 * floppy. 1645 */ 1646 void 1647 fd_mountroot_hook(device_t dev) 1648 { 1649 int c; 1650 1651 printf("Insert filesystem floppy and press return."); 1652 cnpollc(1); 1653 for (;;) { 1654 c = cngetc(); 1655 if ((c == '\r') || (c == '\n')) { 1656 printf("\n"); 1657 break; 1658 } 1659 } 1660 cnpollc(0); 1661 } 1662 1663 static void 1664 fd_set_geometry(struct fd_softc *fd) 1665 { 1666 const struct fd_type *fdt; 1667 1668 fdt = fd->sc_type; 1669 if (fdt == NULL) { 1670 fdt = fd->sc_deftype; 1671 if (fdt == NULL) 1672 return; 1673 } 1674 1675 struct disk_geom *dg = &fd->sc_dk.dk_geom; 1676 1677 memset(dg, 0, sizeof(*dg)); 1678 dg->dg_secperunit = fdt->size; 1679 dg->dg_nsectors = fdt->sectrac; 1680 switch (fdt->secsize) { 1681 case 2: 1682 dg->dg_secsize = 512; 1683 break; 1684 case 3: 1685 dg->dg_secsize = 1024; 1686 break; 1687 default: 1688 break; 1689 } 1690 dg->dg_ntracks = fdt->heads; 1691 dg->dg_ncylinders = fdt->cyls; 1692 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 1693 } 1694