1 /* $NetBSD: fd.c,v 1.84 2008/04/11 19:16:44 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 /* 74 * Floppy formatting facilities merged from FreeBSD fd.c driver: 75 * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp 76 * which carries the same copyright/redistribution notice as shown above with 77 * the addition of the following statement before the "Redistribution and 78 * use ..." clause: 79 * 80 * Copyright (c) 1993, 1994 by 81 * jc@irbs.UUCP (John Capo) 82 * vak@zebub.msk.su (Serge Vakulenko) 83 * ache@astral.msk.su (Andrew A. Chernov) 84 * 85 * Copyright (c) 1993, 1994, 1995 by 86 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 87 * dufault@hda.com (Peter Dufault) 88 */ 89 90 #include <sys/cdefs.h> 91 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.84 2008/04/11 19:16:44 cegger Exp $"); 92 93 #include "rnd.h" 94 #include "opt_ddb.h" 95 96 /* 97 * XXX This driver should be properly MI'd some day, but this allows us 98 * XXX to eliminate a lot of code duplication for now. 99 */ 100 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 101 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 102 !defined(prep) && !defined(sandpoint) && !defined(x86_64) && \ 103 !defined(mvmeppc) 104 #error platform not supported by this driver, yet 105 #endif 106 107 #include <sys/param.h> 108 #include <sys/systm.h> 109 #include <sys/callout.h> 110 #include <sys/kernel.h> 111 #include <sys/file.h> 112 #include <sys/ioctl.h> 113 #include <sys/device.h> 114 #include <sys/disklabel.h> 115 #include <sys/disk.h> 116 #include <sys/buf.h> 117 #include <sys/bufq.h> 118 #include <sys/malloc.h> 119 #include <sys/uio.h> 120 #include <sys/syslog.h> 121 #include <sys/queue.h> 122 #include <sys/proc.h> 123 #include <sys/fdio.h> 124 #include <sys/conf.h> 125 #include <sys/vnode.h> 126 #if NRND > 0 127 #include <sys/rnd.h> 128 #endif 129 130 #include <prop/proplib.h> 131 132 #include <uvm/uvm_extern.h> 133 134 #include <dev/cons.h> 135 136 #include <sys/cpu.h> 137 #include <sys/bus.h> 138 139 #include "locators.h" 140 141 #if defined(atari) 142 /* 143 * On the atari, it is configured as fdcisa 144 */ 145 #define FDCCF_DRIVE FDCISACF_DRIVE 146 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 147 148 #define fd_cd fdisa_cd 149 #endif /* atari */ 150 151 #include <sys/intr.h> 152 153 #include <dev/isa/isavar.h> 154 #include <dev/isa/isadmavar.h> 155 156 #include <dev/isa/fdreg.h> 157 #include <dev/isa/fdcvar.h> 158 159 #if defined(i386) 160 161 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 162 #include <i386/isa/nvram.h> 163 164 #include "mca.h" 165 #if NMCA > 0 166 #include <machine/mca_machdep.h> /* for MCA_system */ 167 #endif 168 169 #endif /* i386 */ 170 171 #include <dev/isa/fdvar.h> 172 173 #define FDUNIT(dev) (minor(dev) / 8) 174 #define FDTYPE(dev) (minor(dev) % 8) 175 176 /* (mis)use device use flag to identify format operation */ 177 #define B_FORMAT B_DEVPRIVATE 178 179 /* controller driver configuration */ 180 int fdprint(void *, const char *); 181 182 #if NMCA > 0 183 /* MCA - specific entries */ 184 const struct fd_type mca_fd_types[] = { 185 { 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 */ 186 { 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 */ 187 }; 188 #endif /* NMCA > 0 */ 189 190 /* The order of entries in the following table is important -- BEWARE! */ 191 192 #if defined(atari) 193 const struct fd_type fd_types[] = { 194 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 195 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 196 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 197 }; 198 #else 199 const struct fd_type fd_types[] = { 200 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 201 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 202 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 203 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 204 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 205 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 206 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 207 }; 208 #endif /* defined(atari) */ 209 210 void fdcfinishattach(device_t); 211 int fdprobe(device_t, struct cfdata *, void *); 212 void fdattach(device_t, device_t, void *); 213 static int fddetach(device_t, int); 214 static int fdcintr1(struct fdc_softc *); 215 static void fdcintrcb(void *); 216 static bool fdcsuspend(device_t PMF_FN_PROTO); 217 static bool fdcresume(device_t PMF_FN_PROTO); 218 219 extern struct cfdriver fd_cd; 220 221 #ifdef atari 222 CFATTACH_DECL_NEW(fdisa, sizeof(struct fd_softc), 223 fdprobe, fdattach, fddetach, NULL); 224 #else 225 CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), 226 fdprobe, fdattach, fddetach, NULL); 227 #endif 228 229 dev_type_open(fdopen); 230 dev_type_close(fdclose); 231 dev_type_read(fdread); 232 dev_type_write(fdwrite); 233 dev_type_ioctl(fdioctl); 234 dev_type_strategy(fdstrategy); 235 236 const struct bdevsw fd_bdevsw = { 237 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 238 }; 239 240 const struct cdevsw fd_cdevsw = { 241 fdopen, fdclose, fdread, fdwrite, fdioctl, 242 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 243 }; 244 245 void fdgetdisklabel(struct fd_softc *); 246 int fd_get_parms(struct fd_softc *); 247 void fdstart(struct fd_softc *); 248 249 struct dkdriver fddkdriver = { fdstrategy, NULL }; 250 251 #if defined(i386) 252 const struct fd_type *fd_nvtotype(const char *, int, int); 253 #endif /* i386 */ 254 void fd_set_motor(struct fdc_softc *fdc, int reset); 255 void fd_motor_off(void *arg); 256 void fd_motor_on(void *arg); 257 int fdcresult(struct fdc_softc *fdc); 258 void fdcstart(struct fdc_softc *fdc); 259 void fdcstatus(device_t, int, const char *); 260 void fdctimeout(void *arg); 261 void fdcretry(struct fdc_softc *fdc); 262 void fdfinish(struct fd_softc *fd, struct buf *bp); 263 static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 264 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 265 static void fd_set_properties(struct fd_softc *fd); 266 267 void fd_mountroot_hook(device_t); 268 269 /* 270 * Arguments passed between fdcattach and fdprobe. 271 */ 272 struct fdc_attach_args { 273 int fa_drive; 274 const struct fd_type *fa_deftype; 275 }; 276 277 /* 278 * Print the location of a disk drive (called just before attaching the 279 * the drive). If `fdc' is not NULL, the drive was found but was not 280 * in the system config file; print the drive name as well. 281 * Return QUIET (config_find ignores this if the device was configured) to 282 * avoid printing `fdN not configured' messages. 283 */ 284 int 285 fdprint(void *aux, const char *fdc) 286 { 287 struct fdc_attach_args *fa = aux; 288 289 if (!fdc) 290 aprint_normal(" drive %d", fa->fa_drive); 291 return QUIET; 292 } 293 294 static bool 295 fdcresume(device_t self PMF_FN_ARGS) 296 { 297 struct fdc_softc *fdc = device_private(self); 298 299 (void)fdcintr1(fdc); 300 return true; 301 } 302 303 static bool 304 fdcsuspend(device_t self PMF_FN_ARGS) 305 { 306 struct fdc_softc *fdc = device_private(self); 307 int drive; 308 struct fd_softc *fd; 309 310 mutex_enter(&fdc->sc_mtx); 311 while (fdc->sc_state != DEVIDLE) 312 cv_wait(&fdc->sc_cv, &fdc->sc_mtx); 313 for (drive = 0; drive < 4; drive++) { 314 if ((fd = fdc->sc_fd[drive]) == NULL) 315 continue; 316 fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); 317 } 318 fd_set_motor(fdc, 0); 319 mutex_exit(&fdc->sc_mtx); 320 return true; 321 } 322 323 void 324 fdc_childdet(device_t self, device_t child) 325 { 326 struct fdc_softc *fdc = device_private(self); 327 struct fd_softc *fd = device_private(child); 328 int drive = fd->sc_drive; 329 330 KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ 331 fdc->sc_fd[drive] = NULL; 332 } 333 334 int 335 fdcdetach(device_t self, int flags) 336 { 337 int rc; 338 struct fdc_softc *fdc = device_private(self); 339 340 if ((rc = config_detach_children(self, flags)) != 0) 341 return rc; 342 343 pmf_device_deregister(self); 344 345 isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); 346 isa_drq_free(fdc->sc_ic, fdc->sc_drq); 347 348 callout_destroy(&fdc->sc_intr_ch); 349 callout_destroy(&fdc->sc_timo_ch); 350 351 cv_destroy(&fdc->sc_cv); 352 mutex_destroy(&fdc->sc_mtx); 353 354 return 0; 355 } 356 357 void 358 fdcattach(struct fdc_softc *fdc) 359 { 360 mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); 361 cv_init(&fdc->sc_cv, "fdcwakeup"); 362 callout_init(&fdc->sc_timo_ch, 0); 363 callout_init(&fdc->sc_intr_ch, 0); 364 365 fdc->sc_state = DEVIDLE; 366 TAILQ_INIT(&fdc->sc_drives); 367 368 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 369 370 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 371 aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", 372 fdc->sc_drq); 373 return; 374 } 375 376 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 377 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 378 aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); 379 return; 380 } 381 382 config_interrupts(fdc->sc_dev, fdcfinishattach); 383 384 if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { 385 aprint_error_dev(fdc->sc_dev, 386 "cannot set power mgmt handler\n"); 387 } 388 } 389 390 void 391 fdcfinishattach(device_t self) 392 { 393 struct fdc_softc *fdc = device_private(self); 394 bus_space_tag_t iot = fdc->sc_iot; 395 bus_space_handle_t ioh = fdc->sc_ioh; 396 struct fdc_attach_args fa; 397 #if defined(i386) 398 int type; 399 #endif 400 401 /* 402 * Reset the controller to get it into a known state. Not all 403 * probes necessarily need do this to discover the controller up 404 * front, so don't assume anything. 405 */ 406 407 bus_space_write_1(iot, ioh, fdout, 0); 408 delay(100); 409 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 410 411 /* see if it can handle a command */ 412 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 413 aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); 414 return; 415 } 416 out_fdc(iot, ioh, 0xdf); 417 out_fdc(iot, ioh, 2); 418 419 #if defined(i386) 420 /* 421 * The NVRAM info only tells us about the first two disks on the 422 * `primary' floppy controller. 423 */ 424 /* XXX device_unit() abuse */ 425 if (device_unit(fdc->sc_dev) == 0) 426 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 427 else 428 type = -1; 429 #endif /* i386 */ 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(i386) 442 if (type >= 0 && fa.fa_drive < 2) 443 fa.fa_deftype = 444 fd_nvtotype(device_xname(fdc->sc_dev), 445 type, fa.fa_drive); 446 else 447 fa.fa_deftype = NULL; /* unknown */ 448 #elif defined(atari) 449 /* 450 * Atari has a different ordening, defaults to 1.44 451 */ 452 fa.fa_deftype = &fd_types[2]; 453 #else 454 /* 455 * Default to 1.44MB on Alpha and BeBox. How do we tell 456 * on these platforms? 457 */ 458 fa.fa_deftype = &fd_types[0]; 459 #endif /* i386 */ 460 (void)config_found_ia(fdc->sc_dev, "fdc", (void *)&fa, fdprint); 461 } 462 } 463 fdc->sc_state = DEVIDLE; 464 } 465 466 int 467 fdprobe(device_t parent, cfdata_t match, void *aux) 468 { 469 struct fdc_softc *fdc = device_private(parent); 470 struct cfdata *cf = match; 471 struct fdc_attach_args *fa = aux; 472 int drive = fa->fa_drive; 473 bus_space_tag_t iot = fdc->sc_iot; 474 bus_space_handle_t ioh = fdc->sc_ioh; 475 int n; 476 477 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 478 cf->cf_loc[FDCCF_DRIVE] != drive) 479 return 0; 480 /* 481 * XXX 482 * This is to work around some odd interactions between this driver 483 * and SMC Ethernet cards. 484 */ 485 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 486 return 0; 487 488 /* Use PNP information if available */ 489 if (fdc->sc_known) 490 return 1; 491 492 mutex_enter(&fdc->sc_mtx); 493 /* toss any interrupt status */ 494 for (n = 0; n < 4; n++) { 495 out_fdc(iot, ioh, NE7CMD_SENSEI); 496 (void) fdcresult(fdc); 497 } 498 /* select drive and turn on motor */ 499 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 500 /* wait for motor to spin up */ 501 /* XXX check sc_probe */ 502 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 503 out_fdc(iot, ioh, NE7CMD_RECAL); 504 out_fdc(iot, ioh, drive); 505 /* wait for recalibrate, up to 2s */ 506 /* XXX check sc_probe */ 507 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 508 #ifdef FD_DEBUG 509 /* XXX */ 510 printf("fdprobe: got intr\n"); 511 #endif 512 } 513 out_fdc(iot, ioh, NE7CMD_SENSEI); 514 n = fdcresult(fdc); 515 #ifdef FD_DEBUG 516 { 517 int i; 518 printf("fdprobe: status"); 519 for (i = 0; i < n; i++) 520 printf(" %x", fdc->sc_status[i]); 521 printf("\n"); 522 } 523 #endif 524 /* turn off motor */ 525 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 526 mutex_exit(&fdc->sc_mtx); 527 528 #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ 529 if (n != 2 || (fdc->sc_status[1] != 0)) 530 return 0; 531 #else 532 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 533 return 0; 534 #endif /* bebox */ 535 536 return 1; 537 } 538 539 /* 540 * Controller is working, and drive responded. Attach it. 541 */ 542 void 543 fdattach(device_t parent, device_t self, void *aux) 544 { 545 struct fdc_softc *fdc = device_private(parent); 546 struct fd_softc *fd = device_private(self); 547 struct fdc_attach_args *fa = aux; 548 const struct fd_type *type = fa->fa_deftype; 549 int drive = fa->fa_drive; 550 551 fd->sc_dev = self; 552 553 callout_init(&fd->sc_motoron_ch, 0); 554 callout_init(&fd->sc_motoroff_ch, 0); 555 556 /* XXX Allow `flags' to override device type? */ 557 558 if (type) 559 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 560 type->cyls, type->heads, type->sectrac); 561 else 562 aprint_normal(": density unknown\n"); 563 564 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 565 fd->sc_cylin = -1; 566 fd->sc_drive = drive; 567 fd->sc_deftype = type; 568 fdc->sc_fd[drive] = fd; 569 570 /* 571 * Initialize and attach the disk structure. 572 */ 573 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 574 disk_attach(&fd->sc_dk); 575 576 /* 577 * Establish a mountroot hook. 578 */ 579 fd->sc_roothook = 580 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 581 582 #if NRND > 0 583 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 584 RND_TYPE_DISK, 0); 585 #endif 586 587 fd_set_properties(fd); 588 589 if (!pmf_device_register(self, NULL, NULL)) 590 aprint_error_dev(self, "cannot set power mgmt handler\n"); 591 } 592 593 static int 594 fddetach(device_t self, int flags) 595 { 596 struct fd_softc *fd = device_private(self); 597 int bmaj, cmaj, i, mn; 598 599 fd_motor_off(fd); 600 601 /* locate the major number */ 602 bmaj = bdevsw_lookup_major(&fd_bdevsw); 603 cmaj = cdevsw_lookup_major(&fd_cdevsw); 604 605 /* Nuke the vnodes for any open instances. */ 606 for (i = 0; i < MAXPARTITIONS; i++) { 607 mn = DISKMINOR(device_unit(self), i); 608 vdevgone(bmaj, mn, mn, VBLK); 609 vdevgone(cmaj, mn, mn, VCHR); 610 } 611 612 pmf_device_deregister(self); 613 614 #if 0 /* XXX need to undo at detach? */ 615 fd_set_properties(fd); 616 #endif 617 #if NRND > 0 618 rnd_detach_source(&fd->rnd_source); 619 #endif 620 621 disk_detach(&fd->sc_dk); 622 623 /* Kill off any queued buffers. */ 624 bufq_drain(fd->sc_q); 625 626 bufq_free(fd->sc_q); 627 628 callout_destroy(&fd->sc_motoroff_ch); 629 callout_destroy(&fd->sc_motoron_ch); 630 631 return 0; 632 } 633 634 #if defined(i386) 635 /* 636 * Translate nvram type into internal data structure. Return NULL for 637 * none/unknown/unusable. 638 */ 639 const struct fd_type * 640 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 641 { 642 int type; 643 644 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 645 switch (type) { 646 case NVRAM_DISKETTE_NONE: 647 return NULL; 648 case NVRAM_DISKETTE_12M: 649 return &fd_types[1]; 650 case NVRAM_DISKETTE_TYPE5: 651 case NVRAM_DISKETTE_TYPE6: 652 /* XXX We really ought to handle 2.88MB format. */ 653 case NVRAM_DISKETTE_144M: 654 #if NMCA > 0 655 if (MCA_system) 656 return &mca_fd_types[0]; 657 else 658 #endif /* NMCA > 0 */ 659 return &fd_types[0]; 660 case NVRAM_DISKETTE_360K: 661 return &fd_types[3]; 662 case NVRAM_DISKETTE_720K: 663 #if NMCA > 0 664 if (MCA_system) 665 return &mca_fd_types[1]; 666 else 667 #endif /* NMCA > 0 */ 668 return &fd_types[4]; 669 default: 670 printf("%s: drive %d: unknown device type 0x%x\n", 671 fdc, drive, type); 672 return NULL; 673 } 674 } 675 #endif /* i386 */ 676 677 static const struct fd_type * 678 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 679 { 680 u_int type = FDTYPE(dev); 681 682 if (type > __arraycount(fd_types)) 683 return NULL; 684 return type ? &fd_types[type - 1] : fd->sc_deftype; 685 } 686 687 void 688 fdstrategy(struct buf *bp) 689 { 690 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 691 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 692 int sz; 693 694 /* Valid unit, controller, and request? */ 695 if (bp->b_blkno < 0 || 696 ((bp->b_bcount % FDC_BSIZE) != 0 && 697 (bp->b_flags & B_FORMAT) == 0)) { 698 bp->b_error = EINVAL; 699 goto done; 700 } 701 702 /* If it's a null transfer, return immediately. */ 703 if (bp->b_bcount == 0) 704 goto done; 705 706 sz = howmany(bp->b_bcount, FDC_BSIZE); 707 708 if (bp->b_blkno + sz > fd->sc_type->size) { 709 sz = fd->sc_type->size - bp->b_blkno; 710 if (sz == 0) { 711 /* If exactly at end of disk, return EOF. */ 712 goto done; 713 } 714 if (sz < 0) { 715 /* If past end of disk, return EINVAL. */ 716 bp->b_error = EINVAL; 717 goto done; 718 } 719 /* Otherwise, truncate request. */ 720 bp->b_bcount = sz << DEV_BSHIFT; 721 } 722 723 bp->b_rawblkno = bp->b_blkno; 724 bp->b_cylinder = 725 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 726 727 #ifdef FD_DEBUG 728 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 729 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 730 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 731 #endif 732 733 /* Queue transfer on drive, activate drive and controller if idle. */ 734 mutex_enter(&fdc->sc_mtx); 735 BUFQ_PUT(fd->sc_q, bp); 736 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 737 if (fd->sc_active == 0) 738 fdstart(fd); 739 #ifdef DIAGNOSTIC 740 else { 741 if (fdc->sc_state == DEVIDLE) { 742 printf("fdstrategy: controller inactive\n"); 743 fdcstart(fdc); 744 } 745 } 746 #endif 747 mutex_exit(&fdc->sc_mtx); 748 return; 749 750 done: 751 /* Toss transfer; we're done early. */ 752 bp->b_resid = bp->b_bcount; 753 biodone(bp); 754 } 755 756 void 757 fdstart(struct fd_softc *fd) 758 { 759 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 760 int active = !TAILQ_EMPTY(&fdc->sc_drives); 761 762 KASSERT(mutex_owned(&fdc->sc_mtx)); 763 /* Link into controller queue. */ 764 fd->sc_active = 1; 765 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 766 767 /* If controller not already active, start it. */ 768 if (!active) 769 fdcstart(fdc); 770 } 771 772 void 773 fdfinish(struct fd_softc *fd, struct buf *bp) 774 { 775 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 776 777 /* 778 * Move this drive to the end of the queue to give others a `fair' 779 * chance. We only force a switch if N operations are completed while 780 * another drive is waiting to be serviced, since there is a long motor 781 * startup delay whenever we switch. 782 */ 783 (void)BUFQ_GET(fd->sc_q); 784 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 785 fd->sc_ops = 0; 786 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 787 if (BUFQ_PEEK(fd->sc_q) != NULL) 788 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 789 else 790 fd->sc_active = 0; 791 } 792 bp->b_resid = fd->sc_bcount; 793 fd->sc_skip = 0; 794 795 #if NRND > 0 796 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 797 #endif 798 799 biodone(bp); 800 /* turn off motor 5s from now */ 801 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 802 fdc->sc_state = DEVIDLE; 803 } 804 805 int 806 fdread(dev_t dev, struct uio *uio, int flags) 807 { 808 809 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 810 } 811 812 int 813 fdwrite(dev_t dev, struct uio *uio, int flags) 814 { 815 816 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 817 } 818 819 void 820 fd_set_motor(struct fdc_softc *fdc, int reset) 821 { 822 struct fd_softc *fd; 823 u_char status; 824 int n; 825 826 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 827 status = fd->sc_drive; 828 else 829 status = 0; 830 if (!reset) 831 status |= FDO_FRST | FDO_FDMAEN; 832 for (n = 0; n < 4; n++) 833 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 834 status |= FDO_MOEN(n); 835 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 836 } 837 838 void 839 fd_motor_off(void *arg) 840 { 841 struct fd_softc *fd = arg; 842 struct fdc_softc *fdc; 843 844 fdc = device_private(device_parent(fd->sc_dev)); 845 846 mutex_enter(&fdc->sc_mtx); 847 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 848 fd_set_motor(fdc, 0); 849 mutex_exit(&fdc->sc_mtx); 850 } 851 852 void 853 fd_motor_on(void *arg) 854 { 855 struct fd_softc *fd = arg; 856 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 857 858 mutex_enter(&fdc->sc_mtx); 859 fd->sc_flags &= ~FD_MOTOR_WAIT; 860 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 861 (void)fdcintr1(fdc); 862 mutex_exit(&fdc->sc_mtx); 863 } 864 865 int 866 fdcresult(struct fdc_softc *fdc) 867 { 868 bus_space_tag_t iot = fdc->sc_iot; 869 bus_space_handle_t ioh = fdc->sc_ioh; 870 u_char i; 871 u_int j = 100000, 872 n = 0; 873 874 for (; j; j--) { 875 i = bus_space_read_1(iot, ioh, fdsts) & 876 (NE7_DIO | NE7_RQM | NE7_CB); 877 if (i == NE7_RQM) 878 return n; 879 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 880 if (n >= sizeof(fdc->sc_status)) { 881 log(LOG_ERR, "fdcresult: overrun\n"); 882 return -1; 883 } 884 fdc->sc_status[n++] = 885 bus_space_read_1(iot, ioh, fddata); 886 } 887 delay(10); 888 } 889 log(LOG_ERR, "fdcresult: timeout\n"); 890 return -1; 891 } 892 893 int 894 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 895 { 896 u_char i; 897 u_int j = 100000; 898 899 for (; j; j--) { 900 i = bus_space_read_1(iot, ioh, fdsts) & 901 (NE7_DIO | NE7_RQM); 902 if (i == NE7_RQM) { 903 bus_space_write_1(iot, ioh, fddata, x); 904 return 0; 905 } 906 delay(10); 907 } 908 return -1; 909 } 910 911 int 912 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 913 { 914 struct fd_softc *fd; 915 const struct fd_type *type; 916 917 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 918 if (fd == NULL) 919 return (ENXIO); 920 921 type = fd_dev_to_type(fd, dev); 922 if (type == NULL) 923 return ENXIO; 924 925 if ((fd->sc_flags & FD_OPEN) != 0 && 926 memcmp(fd->sc_type, type, sizeof(*type))) 927 return EBUSY; 928 929 fd->sc_type_copy = *type; 930 fd->sc_type = &fd->sc_type_copy; 931 fd->sc_cylin = -1; 932 fd->sc_flags |= FD_OPEN; 933 934 fd_set_properties(fd); 935 936 return 0; 937 } 938 939 int 940 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 941 { 942 struct fd_softc *fd = 943 device_lookup_private(&fd_cd, FDUNIT(dev)); 944 945 fd->sc_flags &= ~FD_OPEN; 946 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 947 return 0; 948 } 949 950 void 951 fdcstart(struct fdc_softc *fdc) 952 { 953 954 KASSERT(mutex_owned(&fdc->sc_mtx)); 955 956 if (!device_is_active(fdc->sc_dev)) 957 return; 958 959 #ifdef DIAGNOSTIC 960 /* only got here if controller's drive queue was inactive; should 961 be in idle state */ 962 if (fdc->sc_state != DEVIDLE) { 963 printf("fdcstart: not idle\n"); 964 return; 965 } 966 #endif 967 (void)fdcintr1(fdc); 968 } 969 970 void 971 fdcstatus(device_t dv, int n, const char *s) 972 { 973 struct fdc_softc *fdc = device_private(device_parent(dv)); 974 char bits[64]; 975 976 if (n == 0) { 977 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 978 (void) fdcresult(fdc); 979 n = 2; 980 } 981 982 aprint_normal_dev(dv, "%s", s); 983 984 switch (n) { 985 case 0: 986 printf("\n"); 987 break; 988 case 2: 989 printf(" (st0 %s cyl %d)\n", 990 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 991 bits, sizeof(bits)), fdc->sc_status[1]); 992 break; 993 case 7: 994 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 995 NE7_ST0BITS, bits, sizeof(bits))); 996 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 997 NE7_ST1BITS, bits, sizeof(bits))); 998 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 999 NE7_ST2BITS, bits, sizeof(bits))); 1000 printf(" cyl %d head %d sec %d)\n", 1001 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1002 break; 1003 #ifdef DIAGNOSTIC 1004 default: 1005 printf("\nfdcstatus: weird size"); 1006 break; 1007 #endif 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 char bits[64]; 1347 struct fd_softc *fd; 1348 struct buf *bp; 1349 1350 fd = TAILQ_FIRST(&fdc->sc_drives); 1351 bp = BUFQ_PEEK(fd->sc_q); 1352 1353 if (fd->sc_opts & FDOPT_NORETRY) 1354 goto fail; 1355 switch (fdc->sc_errors) { 1356 case 0: 1357 /* try again */ 1358 fdc->sc_state = DOSEEK; 1359 break; 1360 1361 case 1: case 2: case 3: 1362 /* didn't work; try recalibrating */ 1363 fdc->sc_state = DORECAL; 1364 break; 1365 1366 case 4: 1367 /* still no go; reset the bastard */ 1368 fdc->sc_state = DORESET; 1369 break; 1370 1371 default: 1372 fail: 1373 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1374 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1375 fd->sc_skip / FDC_BSIZE, NULL); 1376 1377 printf(" (st0 %s", 1378 bitmask_snprintf(fdc->sc_status[0], 1379 NE7_ST0BITS, bits, 1380 sizeof(bits))); 1381 printf(" st1 %s", 1382 bitmask_snprintf(fdc->sc_status[1], 1383 NE7_ST1BITS, bits, 1384 sizeof(bits))); 1385 printf(" st2 %s", 1386 bitmask_snprintf(fdc->sc_status[2], 1387 NE7_ST2BITS, bits, 1388 sizeof(bits))); 1389 printf(" cyl %d head %d sec %d)\n", 1390 fdc->sc_status[3], 1391 fdc->sc_status[4], 1392 fdc->sc_status[5]); 1393 } 1394 1395 bp->b_error = EIO; 1396 fdfinish(fd, bp); 1397 } 1398 fdc->sc_errors++; 1399 } 1400 1401 int 1402 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1403 { 1404 struct fd_softc *fd = 1405 device_lookup_private(&fd_cd, FDUNIT(dev)); 1406 struct fdformat_parms *form_parms; 1407 struct fdformat_cmd *form_cmd; 1408 struct ne7_fd_formb *fd_formb; 1409 struct disklabel buffer; 1410 int error; 1411 unsigned int scratch; 1412 int il[FD_MAX_NSEC + 1]; 1413 int i, j; 1414 #ifdef __HAVE_OLD_DISKLABEL 1415 struct disklabel newlabel; 1416 #endif 1417 1418 switch (cmd) { 1419 case DIOCGDINFO: 1420 #ifdef __HAVE_OLD_DISKLABEL 1421 case ODIOCGDINFO: 1422 #endif 1423 memset(&buffer, 0, sizeof(buffer)); 1424 1425 buffer.d_secpercyl = fd->sc_type->seccyl; 1426 buffer.d_type = DTYPE_FLOPPY; 1427 buffer.d_secsize = FDC_BSIZE; 1428 1429 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1430 return EINVAL; 1431 1432 #ifdef __HAVE_OLD_DISKLABEL 1433 if (cmd == ODIOCGDINFO) { 1434 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1435 return ENOTTY; 1436 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1437 } else 1438 #endif 1439 *(struct disklabel *)addr = buffer; 1440 return 0; 1441 1442 case DIOCWLABEL: 1443 if ((flag & FWRITE) == 0) 1444 return EBADF; 1445 /* XXX do something */ 1446 return 0; 1447 1448 case DIOCWDINFO: 1449 #ifdef __HAVE_OLD_DISKLABEL 1450 case ODIOCWDINFO: 1451 #endif 1452 { 1453 struct disklabel *lp; 1454 1455 if ((flag & FWRITE) == 0) 1456 return EBADF; 1457 #ifdef __HAVE_OLD_DISKLABEL 1458 if (cmd == ODIOCWDINFO) { 1459 memset(&newlabel, 0, sizeof newlabel); 1460 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1461 lp = &newlabel; 1462 } else 1463 #endif 1464 lp = (struct disklabel *)addr; 1465 1466 error = setdisklabel(&buffer, lp, 0, NULL); 1467 if (error) 1468 return error; 1469 1470 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1471 return error; 1472 } 1473 1474 case FDIOCGETFORMAT: 1475 form_parms = (struct fdformat_parms *)addr; 1476 form_parms->fdformat_version = FDFORMAT_VERSION; 1477 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1478 form_parms->ncyl = fd->sc_type->cyls; 1479 form_parms->nspt = fd->sc_type->sectrac; 1480 form_parms->ntrk = fd->sc_type->heads; 1481 form_parms->stepspercyl = fd->sc_type->step; 1482 form_parms->gaplen = fd->sc_type->gap2; 1483 form_parms->fillbyte = fd->sc_type->fillbyte; 1484 form_parms->interleave = fd->sc_type->interleave; 1485 switch (fd->sc_type->rate) { 1486 case FDC_500KBPS: 1487 form_parms->xfer_rate = 500 * 1024; 1488 break; 1489 case FDC_300KBPS: 1490 form_parms->xfer_rate = 300 * 1024; 1491 break; 1492 case FDC_250KBPS: 1493 form_parms->xfer_rate = 250 * 1024; 1494 break; 1495 default: 1496 return EINVAL; 1497 } 1498 return 0; 1499 1500 case FDIOCSETFORMAT: 1501 if((flag & FWRITE) == 0) 1502 return EBADF; /* must be opened for writing */ 1503 form_parms = (struct fdformat_parms *)addr; 1504 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1505 return EINVAL; /* wrong version of formatting prog */ 1506 1507 scratch = form_parms->nbps >> 7; 1508 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1509 scratch & ~(1 << (ffs(scratch)-1))) 1510 /* not a power-of-two multiple of 128 */ 1511 return EINVAL; 1512 1513 switch (form_parms->xfer_rate) { 1514 case 500 * 1024: 1515 fd->sc_type->rate = FDC_500KBPS; 1516 break; 1517 case 300 * 1024: 1518 fd->sc_type->rate = FDC_300KBPS; 1519 break; 1520 case 250 * 1024: 1521 fd->sc_type->rate = FDC_250KBPS; 1522 break; 1523 default: 1524 return EINVAL; 1525 } 1526 1527 if (form_parms->nspt > FD_MAX_NSEC || 1528 form_parms->fillbyte > 0xff || 1529 form_parms->interleave > 0xff) 1530 return EINVAL; 1531 fd->sc_type->sectrac = form_parms->nspt; 1532 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1533 return EINVAL; 1534 fd->sc_type->heads = form_parms->ntrk; 1535 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1536 fd->sc_type->secsize = ffs(scratch)-1; 1537 fd->sc_type->gap2 = form_parms->gaplen; 1538 fd->sc_type->cyls = form_parms->ncyl; 1539 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1540 form_parms->nbps / DEV_BSIZE; 1541 fd->sc_type->step = form_parms->stepspercyl; 1542 fd->sc_type->fillbyte = form_parms->fillbyte; 1543 fd->sc_type->interleave = form_parms->interleave; 1544 return 0; 1545 1546 case FDIOCFORMAT_TRACK: 1547 if((flag & FWRITE) == 0) 1548 return EBADF; /* must be opened for writing */ 1549 form_cmd = (struct fdformat_cmd *)addr; 1550 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1551 return EINVAL; /* wrong version of formatting prog */ 1552 1553 if (form_cmd->head >= fd->sc_type->heads || 1554 form_cmd->cylinder >= fd->sc_type->cyls) { 1555 return EINVAL; 1556 } 1557 1558 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1559 M_TEMP, M_NOWAIT); 1560 if (fd_formb == 0) 1561 return ENOMEM; 1562 1563 fd_formb->head = form_cmd->head; 1564 fd_formb->cyl = form_cmd->cylinder; 1565 fd_formb->transfer_rate = fd->sc_type->rate; 1566 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1567 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1568 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1569 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1570 1571 memset(il, 0, sizeof il); 1572 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1573 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1574 j++; 1575 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1576 j += fd->sc_type->interleave; 1577 } 1578 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1579 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1580 fd_formb->fd_formb_headno(i) = form_cmd->head; 1581 fd_formb->fd_formb_secno(i) = il[i+1]; 1582 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1583 } 1584 1585 error = fdformat(dev, fd_formb, l); 1586 free(fd_formb, M_TEMP); 1587 return error; 1588 1589 case FDIOCGETOPTS: /* get drive options */ 1590 *(int *)addr = fd->sc_opts; 1591 return 0; 1592 1593 case FDIOCSETOPTS: /* set drive options */ 1594 fd->sc_opts = *(int *)addr; 1595 return 0; 1596 1597 default: 1598 return ENOTTY; 1599 } 1600 1601 #ifdef DIAGNOSTIC 1602 panic("fdioctl: impossible"); 1603 #endif 1604 } 1605 1606 int 1607 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1608 { 1609 int rv = 0; 1610 struct fd_softc *fd = 1611 device_lookup_private(&fd_cd, FDUNIT(dev)); 1612 struct fd_type *type = fd->sc_type; 1613 struct buf *bp; 1614 1615 /* set up a buffer header for fdstrategy() */ 1616 bp = getiobuf(NULL, false); 1617 if (bp == NULL) 1618 return ENOBUFS; 1619 1620 bp->b_cflags = BC_BUSY; 1621 bp->b_flags = B_PHYS | B_FORMAT; 1622 bp->b_proc = l->l_proc; 1623 bp->b_dev = dev; 1624 1625 /* 1626 * calculate a fake blkno, so fdstrategy() would initiate a 1627 * seek to the requested cylinder 1628 */ 1629 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1630 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1631 1632 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1633 bp->b_data = (void *)finfo; 1634 1635 #ifdef DEBUG 1636 printf("fdformat: blkno %" PRIx64 " count %x\n", 1637 bp->b_blkno, bp->b_bcount); 1638 #endif 1639 1640 /* now do the format */ 1641 fdstrategy(bp); 1642 1643 /* ...and wait for it to complete */ 1644 rv = biowait(bp); 1645 putiobuf(bp); 1646 return rv; 1647 } 1648 1649 /* 1650 * Mountroot hook: prompt the user to enter the root file system 1651 * floppy. 1652 */ 1653 void 1654 fd_mountroot_hook(device_t dev) 1655 { 1656 int c; 1657 1658 printf("Insert filesystem floppy and press return."); 1659 cnpollc(1); 1660 for (;;) { 1661 c = cngetc(); 1662 if ((c == '\r') || (c == '\n')) { 1663 printf("\n"); 1664 break; 1665 } 1666 } 1667 cnpollc(0); 1668 } 1669 1670 static void 1671 fd_set_properties(struct fd_softc *fd) 1672 { 1673 prop_dictionary_t disk_info, odisk_info, geom; 1674 const struct fd_type *fdt; 1675 int secsize; 1676 1677 fdt = fd->sc_type; 1678 if (fdt == NULL) { 1679 fdt = fd->sc_deftype; 1680 if (fdt == NULL) 1681 return; 1682 } 1683 1684 disk_info = prop_dictionary_create(); 1685 1686 geom = prop_dictionary_create(); 1687 1688 prop_dictionary_set_uint64(geom, "sectors-per-unit", 1689 fdt->size); 1690 1691 switch (fdt->secsize) { 1692 case 2: 1693 secsize = 512; 1694 break; 1695 case 3: 1696 secsize = 1024; 1697 break; 1698 default: 1699 secsize = 0; 1700 } 1701 1702 prop_dictionary_set_uint32(geom, "sector-size", 1703 secsize); 1704 1705 prop_dictionary_set_uint16(geom, "sectors-per-track", 1706 fdt->sectrac); 1707 1708 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1709 fdt->heads); 1710 1711 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1712 fdt->cyls); 1713 1714 prop_dictionary_set(disk_info, "geometry", geom); 1715 prop_object_release(geom); 1716 1717 prop_dictionary_set(device_properties(fd->sc_dev), 1718 "disk-info", disk_info); 1719 1720 /* 1721 * Don't release disk_info here; we keep a reference to it. 1722 * disk_detach() will release it when we go away. 1723 */ 1724 1725 odisk_info = fd->sc_dk.dk_info; 1726 fd->sc_dk.dk_info = disk_info; 1727 if (odisk_info) 1728 prop_object_release(odisk_info); 1729 } 1730