1 /* $NetBSD: fd.c,v 1.87 2008/05/03 08:23:41 plunky 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 1.87 2008/05/03 08:23:41 plunky Exp $"); 85 86 #include "rnd.h" 87 #include "opt_ddb.h" 88 89 /* 90 * XXX This driver should be properly MI'd some day, but this allows us 91 * XXX to eliminate a lot of code duplication for now. 92 */ 93 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 94 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 95 !defined(prep) && !defined(sandpoint) && !defined(x86_64) && \ 96 !defined(mvmeppc) 97 #error platform not supported by this driver, yet 98 #endif 99 100 #include <sys/param.h> 101 #include <sys/systm.h> 102 #include <sys/callout.h> 103 #include <sys/kernel.h> 104 #include <sys/file.h> 105 #include <sys/ioctl.h> 106 #include <sys/device.h> 107 #include <sys/disklabel.h> 108 #include <sys/disk.h> 109 #include <sys/buf.h> 110 #include <sys/bufq.h> 111 #include <sys/malloc.h> 112 #include <sys/uio.h> 113 #include <sys/syslog.h> 114 #include <sys/queue.h> 115 #include <sys/proc.h> 116 #include <sys/fdio.h> 117 #include <sys/conf.h> 118 #include <sys/vnode.h> 119 #if NRND > 0 120 #include <sys/rnd.h> 121 #endif 122 123 #include <prop/proplib.h> 124 125 #include <uvm/uvm_extern.h> 126 127 #include <dev/cons.h> 128 129 #include <sys/cpu.h> 130 #include <sys/bus.h> 131 132 #include "locators.h" 133 134 #if defined(atari) 135 /* 136 * On the atari, it is configured as fdcisa 137 */ 138 #define FDCCF_DRIVE FDCISACF_DRIVE 139 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 140 141 #define fd_cd fdisa_cd 142 #endif /* atari */ 143 144 #include <sys/intr.h> 145 146 #include <dev/isa/isavar.h> 147 #include <dev/isa/isadmavar.h> 148 149 #include <dev/isa/fdreg.h> 150 #include <dev/isa/fdcvar.h> 151 152 #if defined(i386) || defined(x86_64) 153 154 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 155 #include <i386/isa/nvram.h> 156 157 #if defined(i386) 158 #include "mca.h" 159 #if NMCA > 0 160 #include <machine/mca_machdep.h> /* for MCA_system */ 161 #endif 162 #endif 163 164 #endif /* i386 || x86_64 */ 165 166 #include <dev/isa/fdvar.h> 167 168 #define FDUNIT(dev) (minor(dev) / 8) 169 #define FDTYPE(dev) (minor(dev) % 8) 170 171 /* (mis)use device use flag to identify format operation */ 172 #define B_FORMAT B_DEVPRIVATE 173 174 /* controller driver configuration */ 175 int fdprint(void *, const char *); 176 177 #if NMCA > 0 178 /* MCA - specific entries */ 179 const struct fd_type mca_fd_types[] = { 180 { 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 */ 181 { 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 */ 182 }; 183 #endif /* NMCA > 0 */ 184 185 /* The order of entries in the following table is important -- BEWARE! */ 186 187 #if defined(atari) 188 const struct fd_type fd_types[] = { 189 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 190 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 191 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 192 }; 193 #else 194 const struct fd_type fd_types[] = { 195 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 196 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 197 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 198 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 199 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 200 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 201 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 202 }; 203 #endif /* defined(atari) */ 204 205 void fdcfinishattach(device_t); 206 int fdprobe(device_t, struct cfdata *, void *); 207 void fdattach(device_t, device_t, void *); 208 static int fddetach(device_t, int); 209 static int fdcintr1(struct fdc_softc *); 210 static void fdcintrcb(void *); 211 static bool fdcsuspend(device_t PMF_FN_PROTO); 212 static bool fdcresume(device_t PMF_FN_PROTO); 213 214 extern struct cfdriver fd_cd; 215 216 #ifdef atari 217 CFATTACH_DECL_NEW(fdisa, sizeof(struct fd_softc), 218 fdprobe, fdattach, fddetach, NULL); 219 #else 220 CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), 221 fdprobe, fdattach, fddetach, NULL); 222 #endif 223 224 dev_type_open(fdopen); 225 dev_type_close(fdclose); 226 dev_type_read(fdread); 227 dev_type_write(fdwrite); 228 dev_type_ioctl(fdioctl); 229 dev_type_strategy(fdstrategy); 230 231 const struct bdevsw fd_bdevsw = { 232 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 233 }; 234 235 const struct cdevsw fd_cdevsw = { 236 fdopen, fdclose, fdread, fdwrite, fdioctl, 237 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 238 }; 239 240 void fdgetdisklabel(struct fd_softc *); 241 int fd_get_parms(struct fd_softc *); 242 void fdstart(struct fd_softc *); 243 244 struct dkdriver fddkdriver = { fdstrategy, NULL }; 245 246 #if defined(i386) || defined(x86_64) 247 const struct fd_type *fd_nvtotype(const char *, int, int); 248 #endif /* i386 || x86_64 */ 249 void fd_set_motor(struct fdc_softc *fdc, int reset); 250 void fd_motor_off(void *arg); 251 void fd_motor_on(void *arg); 252 int fdcresult(struct fdc_softc *fdc); 253 void fdcstart(struct fdc_softc *fdc); 254 void fdcstatus(device_t, int, const char *); 255 void fdctimeout(void *arg); 256 void fdcretry(struct fdc_softc *fdc); 257 void fdfinish(struct fd_softc *fd, struct buf *bp); 258 static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 259 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 260 static void fd_set_properties(struct fd_softc *fd); 261 262 void fd_mountroot_hook(device_t); 263 264 /* 265 * Arguments passed between fdcattach and fdprobe. 266 */ 267 struct fdc_attach_args { 268 int fa_drive; 269 const struct fd_type *fa_deftype; 270 }; 271 272 /* 273 * Print the location of a disk drive (called just before attaching the 274 * the drive). If `fdc' is not NULL, the drive was found but was not 275 * in the system config file; print the drive name as well. 276 * Return QUIET (config_find ignores this if the device was configured) to 277 * avoid printing `fdN not configured' messages. 278 */ 279 int 280 fdprint(void *aux, const char *fdc) 281 { 282 struct fdc_attach_args *fa = aux; 283 284 if (!fdc) 285 aprint_normal(" drive %d", fa->fa_drive); 286 return QUIET; 287 } 288 289 static bool 290 fdcresume(device_t self PMF_FN_ARGS) 291 { 292 struct fdc_softc *fdc = device_private(self); 293 294 (void)fdcintr1(fdc); 295 return true; 296 } 297 298 static bool 299 fdcsuspend(device_t self PMF_FN_ARGS) 300 { 301 struct fdc_softc *fdc = device_private(self); 302 int drive; 303 struct fd_softc *fd; 304 305 mutex_enter(&fdc->sc_mtx); 306 while (fdc->sc_state != DEVIDLE) 307 cv_wait(&fdc->sc_cv, &fdc->sc_mtx); 308 for (drive = 0; drive < 4; drive++) { 309 if ((fd = fdc->sc_fd[drive]) == NULL) 310 continue; 311 fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); 312 } 313 fd_set_motor(fdc, 0); 314 mutex_exit(&fdc->sc_mtx); 315 return true; 316 } 317 318 void 319 fdc_childdet(device_t self, device_t child) 320 { 321 struct fdc_softc *fdc = device_private(self); 322 struct fd_softc *fd = device_private(child); 323 int drive = fd->sc_drive; 324 325 KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ 326 fdc->sc_fd[drive] = NULL; 327 } 328 329 int 330 fdcdetach(device_t self, int flags) 331 { 332 int rc; 333 struct fdc_softc *fdc = device_private(self); 334 335 if ((rc = config_detach_children(self, flags)) != 0) 336 return rc; 337 338 pmf_device_deregister(self); 339 340 isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); 341 isa_drq_free(fdc->sc_ic, fdc->sc_drq); 342 343 callout_destroy(&fdc->sc_intr_ch); 344 callout_destroy(&fdc->sc_timo_ch); 345 346 cv_destroy(&fdc->sc_cv); 347 mutex_destroy(&fdc->sc_mtx); 348 349 return 0; 350 } 351 352 void 353 fdcattach(struct fdc_softc *fdc) 354 { 355 mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); 356 cv_init(&fdc->sc_cv, "fdcwakeup"); 357 callout_init(&fdc->sc_timo_ch, 0); 358 callout_init(&fdc->sc_intr_ch, 0); 359 360 fdc->sc_state = DEVIDLE; 361 TAILQ_INIT(&fdc->sc_drives); 362 363 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 364 365 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 366 aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", 367 fdc->sc_drq); 368 return; 369 } 370 371 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 372 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 373 aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); 374 return; 375 } 376 377 config_interrupts(fdc->sc_dev, fdcfinishattach); 378 379 if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { 380 aprint_error_dev(fdc->sc_dev, 381 "cannot set power mgmt handler\n"); 382 } 383 } 384 385 void 386 fdcfinishattach(device_t self) 387 { 388 struct fdc_softc *fdc = device_private(self); 389 bus_space_tag_t iot = fdc->sc_iot; 390 bus_space_handle_t ioh = fdc->sc_ioh; 391 struct fdc_attach_args fa; 392 393 /* 394 * Reset the controller to get it into a known state. Not all 395 * probes necessarily need do this to discover the controller up 396 * front, so don't assume anything. 397 */ 398 399 bus_space_write_1(iot, ioh, fdout, 0); 400 delay(100); 401 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 402 403 /* see if it can handle a command */ 404 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 405 aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); 406 return; 407 } 408 out_fdc(iot, ioh, 0xdf); 409 out_fdc(iot, ioh, 2); 410 411 #if defined(i386) || defined(x86_64) 412 /* 413 * The NVRAM info only tells us about the first two disks on the 414 * `primary' floppy controller. 415 */ 416 /* XXX device_unit() abuse */ 417 if (device_unit(fdc->sc_dev) == 0) { 418 int type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 419 fdc->sc_known = 1; 420 fdc->sc_knownfds[0] = fd_nvtotype(device_xname(fdc->sc_dev), 421 type, 0); 422 if (fdc->sc_knownfds[0] != NULL) 423 fdc->sc_present |= 1; 424 fdc->sc_knownfds[1] = fd_nvtotype(device_xname(fdc->sc_dev), 425 type, 1); 426 if (fdc->sc_knownfds[1] != NULL) 427 fdc->sc_present |= 2; 428 } 429 #endif /* i386 || x86_64 */ 430 431 /* physical limit: four drives per controller. */ 432 fdc->sc_state = PROBING; 433 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 434 if (fdc->sc_known) { 435 if (fdc->sc_present & (1 << fa.fa_drive)) { 436 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 437 config_found(fdc->sc_dev, (void *)&fa, 438 fdprint); 439 } 440 } else { 441 #if defined(atari) 442 /* 443 * Atari has a different ordening, defaults to 1.44 444 */ 445 fa.fa_deftype = &fd_types[2]; 446 #else 447 /* 448 * Default to 1.44MB on Alpha and BeBox. How do we tell 449 * on these platforms? 450 */ 451 fa.fa_deftype = &fd_types[0]; 452 #endif 453 (void)config_found_ia(fdc->sc_dev, "fdc", (void *)&fa, fdprint); 454 } 455 } 456 fdc->sc_state = DEVIDLE; 457 } 458 459 int 460 fdprobe(device_t parent, cfdata_t match, void *aux) 461 { 462 struct fdc_softc *fdc = device_private(parent); 463 struct cfdata *cf = match; 464 struct fdc_attach_args *fa = aux; 465 int drive = fa->fa_drive; 466 bus_space_tag_t iot = fdc->sc_iot; 467 bus_space_handle_t ioh = fdc->sc_ioh; 468 int n; 469 470 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 471 cf->cf_loc[FDCCF_DRIVE] != drive) 472 return 0; 473 /* 474 * XXX 475 * This is to work around some odd interactions between this driver 476 * and SMC Ethernet cards. 477 */ 478 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 479 return 0; 480 481 /* Use PNP information if available */ 482 if (fdc->sc_known) 483 return 1; 484 485 mutex_enter(&fdc->sc_mtx); 486 /* toss any interrupt status */ 487 for (n = 0; n < 4; n++) { 488 out_fdc(iot, ioh, NE7CMD_SENSEI); 489 (void) fdcresult(fdc); 490 } 491 /* select drive and turn on motor */ 492 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 493 /* wait for motor to spin up */ 494 /* XXX check sc_probe */ 495 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 496 out_fdc(iot, ioh, NE7CMD_RECAL); 497 out_fdc(iot, ioh, drive); 498 /* wait for recalibrate, up to 2s */ 499 /* XXX check sc_probe */ 500 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 501 #ifdef FD_DEBUG 502 /* XXX */ 503 printf("fdprobe: got intr\n"); 504 #endif 505 } 506 out_fdc(iot, ioh, NE7CMD_SENSEI); 507 n = fdcresult(fdc); 508 #ifdef FD_DEBUG 509 { 510 int i; 511 printf("fdprobe: status"); 512 for (i = 0; i < n; i++) 513 printf(" %x", fdc->sc_status[i]); 514 printf("\n"); 515 } 516 #endif 517 /* turn off motor */ 518 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 519 mutex_exit(&fdc->sc_mtx); 520 521 #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ 522 if (n != 2 || (fdc->sc_status[1] != 0)) 523 return 0; 524 #else 525 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 526 return 0; 527 #endif /* bebox */ 528 529 return 1; 530 } 531 532 /* 533 * Controller is working, and drive responded. Attach it. 534 */ 535 void 536 fdattach(device_t parent, device_t self, void *aux) 537 { 538 struct fdc_softc *fdc = device_private(parent); 539 struct fd_softc *fd = device_private(self); 540 struct fdc_attach_args *fa = aux; 541 const struct fd_type *type = fa->fa_deftype; 542 int drive = fa->fa_drive; 543 544 fd->sc_dev = self; 545 546 callout_init(&fd->sc_motoron_ch, 0); 547 callout_init(&fd->sc_motoroff_ch, 0); 548 549 /* XXX Allow `flags' to override device type? */ 550 551 if (type) 552 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 553 type->cyls, type->heads, type->sectrac); 554 else 555 aprint_normal(": density unknown\n"); 556 557 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 558 fd->sc_cylin = -1; 559 fd->sc_drive = drive; 560 fd->sc_deftype = type; 561 fdc->sc_fd[drive] = fd; 562 563 /* 564 * Initialize and attach the disk structure. 565 */ 566 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 567 disk_attach(&fd->sc_dk); 568 569 /* 570 * Establish a mountroot hook. 571 */ 572 fd->sc_roothook = 573 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 574 575 #if NRND > 0 576 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 577 RND_TYPE_DISK, 0); 578 #endif 579 580 fd_set_properties(fd); 581 582 if (!pmf_device_register(self, NULL, NULL)) 583 aprint_error_dev(self, "cannot set power mgmt handler\n"); 584 } 585 586 static int 587 fddetach(device_t self, int flags) 588 { 589 struct fd_softc *fd = device_private(self); 590 int bmaj, cmaj, i, mn; 591 592 fd_motor_off(fd); 593 594 /* locate the major number */ 595 bmaj = bdevsw_lookup_major(&fd_bdevsw); 596 cmaj = cdevsw_lookup_major(&fd_cdevsw); 597 598 /* Nuke the vnodes for any open instances. */ 599 for (i = 0; i < MAXPARTITIONS; i++) { 600 mn = DISKMINOR(device_unit(self), i); 601 vdevgone(bmaj, mn, mn, VBLK); 602 vdevgone(cmaj, mn, mn, VCHR); 603 } 604 605 pmf_device_deregister(self); 606 607 #if 0 /* XXX need to undo at detach? */ 608 fd_set_properties(fd); 609 #endif 610 #if NRND > 0 611 rnd_detach_source(&fd->rnd_source); 612 #endif 613 614 disk_detach(&fd->sc_dk); 615 disk_destroy(&fd->sc_dk); 616 617 /* Kill off any queued buffers. */ 618 bufq_drain(fd->sc_q); 619 620 bufq_free(fd->sc_q); 621 622 callout_destroy(&fd->sc_motoroff_ch); 623 callout_destroy(&fd->sc_motoron_ch); 624 625 return 0; 626 } 627 628 #if defined(i386) || defined(x86_64) 629 /* 630 * Translate nvram type into internal data structure. Return NULL for 631 * none/unknown/unusable. 632 */ 633 const struct fd_type * 634 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 635 { 636 int type; 637 638 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 639 switch (type) { 640 case NVRAM_DISKETTE_NONE: 641 return NULL; 642 case NVRAM_DISKETTE_12M: 643 return &fd_types[1]; 644 case NVRAM_DISKETTE_TYPE5: 645 case NVRAM_DISKETTE_TYPE6: 646 /* XXX We really ought to handle 2.88MB format. */ 647 case NVRAM_DISKETTE_144M: 648 #if NMCA > 0 649 if (MCA_system) 650 return &mca_fd_types[0]; 651 else 652 #endif /* NMCA > 0 */ 653 return &fd_types[0]; 654 case NVRAM_DISKETTE_360K: 655 return &fd_types[3]; 656 case NVRAM_DISKETTE_720K: 657 #if NMCA > 0 658 if (MCA_system) 659 return &mca_fd_types[1]; 660 else 661 #endif /* NMCA > 0 */ 662 return &fd_types[4]; 663 default: 664 printf("%s: drive %d: unknown device type 0x%x\n", 665 fdc, drive, type); 666 return NULL; 667 } 668 } 669 #endif /* i386 || x86_64 */ 670 671 static const struct fd_type * 672 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 673 { 674 u_int type = FDTYPE(dev); 675 676 if (type > __arraycount(fd_types)) 677 return NULL; 678 return type ? &fd_types[type - 1] : fd->sc_deftype; 679 } 680 681 void 682 fdstrategy(struct buf *bp) 683 { 684 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 685 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 686 int sz; 687 688 /* Valid unit, controller, and request? */ 689 if (bp->b_blkno < 0 || 690 ((bp->b_bcount % FDC_BSIZE) != 0 && 691 (bp->b_flags & B_FORMAT) == 0)) { 692 bp->b_error = EINVAL; 693 goto done; 694 } 695 696 /* If it's a null transfer, return immediately. */ 697 if (bp->b_bcount == 0) 698 goto done; 699 700 sz = howmany(bp->b_bcount, FDC_BSIZE); 701 702 if (bp->b_blkno + sz > fd->sc_type->size) { 703 sz = fd->sc_type->size - bp->b_blkno; 704 if (sz == 0) { 705 /* If exactly at end of disk, return EOF. */ 706 goto done; 707 } 708 if (sz < 0) { 709 /* If past end of disk, return EINVAL. */ 710 bp->b_error = EINVAL; 711 goto done; 712 } 713 /* Otherwise, truncate request. */ 714 bp->b_bcount = sz << DEV_BSHIFT; 715 } 716 717 bp->b_rawblkno = bp->b_blkno; 718 bp->b_cylinder = 719 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 720 721 #ifdef FD_DEBUG 722 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 723 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 724 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 725 #endif 726 727 /* Queue transfer on drive, activate drive and controller if idle. */ 728 mutex_enter(&fdc->sc_mtx); 729 BUFQ_PUT(fd->sc_q, bp); 730 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 731 if (fd->sc_active == 0) 732 fdstart(fd); 733 #ifdef DIAGNOSTIC 734 else { 735 if (fdc->sc_state == DEVIDLE) { 736 printf("fdstrategy: controller inactive\n"); 737 fdcstart(fdc); 738 } 739 } 740 #endif 741 mutex_exit(&fdc->sc_mtx); 742 return; 743 744 done: 745 /* Toss transfer; we're done early. */ 746 bp->b_resid = bp->b_bcount; 747 biodone(bp); 748 } 749 750 void 751 fdstart(struct fd_softc *fd) 752 { 753 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 754 int active = !TAILQ_EMPTY(&fdc->sc_drives); 755 756 KASSERT(mutex_owned(&fdc->sc_mtx)); 757 /* Link into controller queue. */ 758 fd->sc_active = 1; 759 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 760 761 /* If controller not already active, start it. */ 762 if (!active) 763 fdcstart(fdc); 764 } 765 766 void 767 fdfinish(struct fd_softc *fd, struct buf *bp) 768 { 769 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 770 771 /* 772 * Move this drive to the end of the queue to give others a `fair' 773 * chance. We only force a switch if N operations are completed while 774 * another drive is waiting to be serviced, since there is a long motor 775 * startup delay whenever we switch. 776 */ 777 (void)BUFQ_GET(fd->sc_q); 778 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 779 fd->sc_ops = 0; 780 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 781 if (BUFQ_PEEK(fd->sc_q) != NULL) 782 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 783 else 784 fd->sc_active = 0; 785 } 786 bp->b_resid = fd->sc_bcount; 787 fd->sc_skip = 0; 788 789 #if NRND > 0 790 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 791 #endif 792 793 biodone(bp); 794 /* turn off motor 5s from now */ 795 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 796 fdc->sc_state = DEVIDLE; 797 } 798 799 int 800 fdread(dev_t dev, struct uio *uio, int flags) 801 { 802 803 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 804 } 805 806 int 807 fdwrite(dev_t dev, struct uio *uio, int flags) 808 { 809 810 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 811 } 812 813 void 814 fd_set_motor(struct fdc_softc *fdc, int reset) 815 { 816 struct fd_softc *fd; 817 u_char status; 818 int n; 819 820 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 821 status = fd->sc_drive; 822 else 823 status = 0; 824 if (!reset) 825 status |= FDO_FRST | FDO_FDMAEN; 826 for (n = 0; n < 4; n++) 827 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 828 status |= FDO_MOEN(n); 829 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 830 } 831 832 void 833 fd_motor_off(void *arg) 834 { 835 struct fd_softc *fd = arg; 836 struct fdc_softc *fdc; 837 838 fdc = device_private(device_parent(fd->sc_dev)); 839 840 mutex_enter(&fdc->sc_mtx); 841 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 842 fd_set_motor(fdc, 0); 843 mutex_exit(&fdc->sc_mtx); 844 } 845 846 void 847 fd_motor_on(void *arg) 848 { 849 struct fd_softc *fd = arg; 850 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 851 852 mutex_enter(&fdc->sc_mtx); 853 fd->sc_flags &= ~FD_MOTOR_WAIT; 854 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 855 (void)fdcintr1(fdc); 856 mutex_exit(&fdc->sc_mtx); 857 } 858 859 int 860 fdcresult(struct fdc_softc *fdc) 861 { 862 bus_space_tag_t iot = fdc->sc_iot; 863 bus_space_handle_t ioh = fdc->sc_ioh; 864 u_char i; 865 u_int j = 100000, 866 n = 0; 867 868 for (; j; j--) { 869 i = bus_space_read_1(iot, ioh, fdsts) & 870 (NE7_DIO | NE7_RQM | NE7_CB); 871 if (i == NE7_RQM) 872 return n; 873 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 874 if (n >= sizeof(fdc->sc_status)) { 875 log(LOG_ERR, "fdcresult: overrun\n"); 876 return -1; 877 } 878 fdc->sc_status[n++] = 879 bus_space_read_1(iot, ioh, fddata); 880 } 881 delay(10); 882 } 883 log(LOG_ERR, "fdcresult: timeout\n"); 884 return -1; 885 } 886 887 int 888 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 889 { 890 u_char i; 891 u_int j = 100000; 892 893 for (; j; j--) { 894 i = bus_space_read_1(iot, ioh, fdsts) & 895 (NE7_DIO | NE7_RQM); 896 if (i == NE7_RQM) { 897 bus_space_write_1(iot, ioh, fddata, x); 898 return 0; 899 } 900 delay(10); 901 } 902 return -1; 903 } 904 905 int 906 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 907 { 908 struct fd_softc *fd; 909 const struct fd_type *type; 910 911 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 912 if (fd == NULL) 913 return (ENXIO); 914 915 type = fd_dev_to_type(fd, dev); 916 if (type == NULL) 917 return ENXIO; 918 919 if ((fd->sc_flags & FD_OPEN) != 0 && 920 memcmp(fd->sc_type, type, sizeof(*type))) 921 return EBUSY; 922 923 fd->sc_type_copy = *type; 924 fd->sc_type = &fd->sc_type_copy; 925 fd->sc_cylin = -1; 926 fd->sc_flags |= FD_OPEN; 927 928 fd_set_properties(fd); 929 930 return 0; 931 } 932 933 int 934 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 935 { 936 struct fd_softc *fd = 937 device_lookup_private(&fd_cd, FDUNIT(dev)); 938 939 fd->sc_flags &= ~FD_OPEN; 940 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 941 return 0; 942 } 943 944 void 945 fdcstart(struct fdc_softc *fdc) 946 { 947 948 KASSERT(mutex_owned(&fdc->sc_mtx)); 949 950 if (!device_is_active(fdc->sc_dev)) 951 return; 952 953 #ifdef DIAGNOSTIC 954 /* only got here if controller's drive queue was inactive; should 955 be in idle state */ 956 if (fdc->sc_state != DEVIDLE) { 957 printf("fdcstart: not idle\n"); 958 return; 959 } 960 #endif 961 (void)fdcintr1(fdc); 962 } 963 964 void 965 fdcstatus(device_t dv, int n, const char *s) 966 { 967 struct fdc_softc *fdc = device_private(device_parent(dv)); 968 char bits[64]; 969 970 if (n == 0) { 971 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 972 (void) fdcresult(fdc); 973 n = 2; 974 } 975 976 aprint_normal_dev(dv, "%s", s); 977 978 switch (n) { 979 case 0: 980 printf("\n"); 981 break; 982 case 2: 983 printf(" (st0 %s cyl %d)\n", 984 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 985 bits, sizeof(bits)), fdc->sc_status[1]); 986 break; 987 case 7: 988 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 989 NE7_ST0BITS, bits, sizeof(bits))); 990 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 991 NE7_ST1BITS, bits, sizeof(bits))); 992 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 993 NE7_ST2BITS, bits, sizeof(bits))); 994 printf(" cyl %d head %d sec %d)\n", 995 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 996 break; 997 #ifdef DIAGNOSTIC 998 default: 999 printf("\nfdcstatus: weird size"); 1000 break; 1001 #endif 1002 } 1003 } 1004 1005 void 1006 fdctimeout(void *arg) 1007 { 1008 struct fdc_softc *fdc = arg; 1009 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1010 1011 mutex_enter(&fdc->sc_mtx); 1012 #ifdef DEBUG 1013 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 1014 #endif 1015 fdcstatus(fd->sc_dev, 0, "timeout"); 1016 1017 if (BUFQ_PEEK(fd->sc_q) != NULL) 1018 fdc->sc_state++; 1019 else 1020 fdc->sc_state = DEVIDLE; 1021 1022 (void)fdcintr1(fdc); 1023 mutex_exit(&fdc->sc_mtx); 1024 } 1025 1026 static int 1027 fdcintr1(struct fdc_softc *fdc) 1028 { 1029 #define st0 fdc->sc_status[0] 1030 #define cyl fdc->sc_status[1] 1031 struct fd_softc *fd; 1032 struct buf *bp; 1033 bus_space_tag_t iot = fdc->sc_iot; 1034 bus_space_handle_t ioh = fdc->sc_ioh; 1035 int read, head, sec, i, nblks; 1036 struct fd_type *type; 1037 struct ne7_fd_formb *finfo = NULL; 1038 1039 KASSERT(mutex_owned(&fdc->sc_mtx)); 1040 if (fdc->sc_state == PROBING) { 1041 #ifdef DEBUG 1042 printf("fdcintr: got probe interrupt\n"); 1043 #endif 1044 fdc->sc_probe++; 1045 goto out; 1046 } 1047 1048 loop: 1049 /* Is there a drive for the controller to do a transfer with? */ 1050 fd = TAILQ_FIRST(&fdc->sc_drives); 1051 if (fd == NULL) { 1052 fdc->sc_state = DEVIDLE; 1053 goto out; 1054 } 1055 1056 /* Is there a transfer to this drive? If not, deactivate drive. */ 1057 bp = BUFQ_PEEK(fd->sc_q); 1058 if (bp == NULL) { 1059 fd->sc_ops = 0; 1060 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1061 fd->sc_active = 0; 1062 goto loop; 1063 } 1064 1065 if (bp->b_flags & B_FORMAT) 1066 finfo = (struct ne7_fd_formb *)bp->b_data; 1067 1068 switch (fdc->sc_state) { 1069 case DEVIDLE: 1070 fdc->sc_errors = 0; 1071 fd->sc_skip = 0; 1072 fd->sc_bcount = bp->b_bcount; 1073 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1074 callout_stop(&fd->sc_motoroff_ch); 1075 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1076 fdc->sc_state = MOTORWAIT; 1077 return 1; 1078 } 1079 if ((fd->sc_flags & FD_MOTOR) == 0) { 1080 /* Turn on the motor, being careful about pairing. */ 1081 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1082 if (ofd && ofd->sc_flags & FD_MOTOR) { 1083 callout_stop(&ofd->sc_motoroff_ch); 1084 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1085 } 1086 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1087 fd_set_motor(fdc, 0); 1088 fdc->sc_state = MOTORWAIT; 1089 /* Allow .25s for motor to stabilize. */ 1090 callout_reset(&fd->sc_motoron_ch, hz / 4, 1091 fd_motor_on, fd); 1092 return 1; 1093 } 1094 /* Make sure the right drive is selected. */ 1095 fd_set_motor(fdc, 0); 1096 1097 /* fall through */ 1098 case DOSEEK: 1099 doseek: 1100 if (fd->sc_cylin == bp->b_cylinder) 1101 goto doio; 1102 1103 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1104 out_fdc(iot, ioh, fd->sc_type->steprate); 1105 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1106 1107 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1108 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1109 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1110 1111 fd->sc_cylin = -1; 1112 fdc->sc_state = SEEKWAIT; 1113 1114 iostat_seek(fd->sc_dk.dk_stats); 1115 disk_busy(&fd->sc_dk); 1116 1117 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1118 return 1; 1119 1120 case DOIO: 1121 doio: 1122 type = fd->sc_type; 1123 if (finfo) 1124 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1125 (char *)finfo; 1126 sec = fd->sc_blkno % type->seccyl; 1127 nblks = type->seccyl - sec; 1128 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1129 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1130 fd->sc_nblks = nblks; 1131 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1132 head = sec / type->sectrac; 1133 sec -= head * type->sectrac; 1134 #ifdef DIAGNOSTIC 1135 { 1136 int block; 1137 block = (fd->sc_cylin * type->heads + head) 1138 * type->sectrac + sec; 1139 if (block != fd->sc_blkno) { 1140 printf("fdcintr: block %d != blkno " 1141 "%" PRId64 "\n", block, fd->sc_blkno); 1142 #ifdef DDB 1143 Debugger(); 1144 #endif 1145 } 1146 } 1147 #endif 1148 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1149 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1150 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1151 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1152 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1153 #ifdef FD_DEBUG 1154 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1155 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1156 head, sec, nblks); 1157 #endif 1158 if (finfo) { 1159 /* formatting */ 1160 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1161 fdc->sc_errors = 4; 1162 fdcretry(fdc); 1163 goto loop; 1164 } 1165 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1166 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1167 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1168 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1169 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1170 } else { 1171 if (read) 1172 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1173 else 1174 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1175 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1176 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1177 out_fdc(iot, ioh, head); 1178 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1179 out_fdc(iot, ioh, type->secsize);/* sector size */ 1180 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1181 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1182 out_fdc(iot, ioh, type->datalen);/* data length */ 1183 } 1184 fdc->sc_state = IOCOMPLETE; 1185 1186 disk_busy(&fd->sc_dk); 1187 1188 /* allow 2 seconds for operation */ 1189 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1190 return 1; /* will return later */ 1191 1192 case SEEKWAIT: 1193 callout_stop(&fdc->sc_timo_ch); 1194 fdc->sc_state = SEEKCOMPLETE; 1195 /* allow 1/50 second for heads to settle */ 1196 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 1197 return 1; 1198 1199 case SEEKCOMPLETE: 1200 /* no data on seek */ 1201 disk_unbusy(&fd->sc_dk, 0, 0); 1202 1203 /* Make sure seek really happened. */ 1204 out_fdc(iot, ioh, NE7CMD_SENSEI); 1205 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1206 cyl != bp->b_cylinder * fd->sc_type->step) { 1207 #ifdef FD_DEBUG 1208 fdcstatus(fd->sc_dev, 2, "seek failed"); 1209 #endif 1210 fdcretry(fdc); 1211 goto loop; 1212 } 1213 fd->sc_cylin = bp->b_cylinder; 1214 goto doio; 1215 1216 case IOTIMEDOUT: 1217 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1218 case SEEKTIMEDOUT: 1219 case RECALTIMEDOUT: 1220 case RESETTIMEDOUT: 1221 fdcretry(fdc); 1222 goto loop; 1223 1224 case IOCOMPLETE: /* IO DONE, post-analyze */ 1225 callout_stop(&fdc->sc_timo_ch); 1226 1227 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1228 (bp->b_flags & B_READ)); 1229 1230 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1231 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1232 #ifdef FD_DEBUG 1233 fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? 1234 "read failed" : "write failed"); 1235 printf("blkno %llu nblks %d\n", 1236 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1237 #endif 1238 fdcretry(fdc); 1239 goto loop; 1240 } 1241 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1242 if (fdc->sc_errors) { 1243 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1244 fd->sc_skip / FDC_BSIZE, NULL); 1245 printf("\n"); 1246 fdc->sc_errors = 0; 1247 } 1248 fd->sc_blkno += fd->sc_nblks; 1249 fd->sc_skip += fd->sc_nbytes; 1250 fd->sc_bcount -= fd->sc_nbytes; 1251 if (!finfo && fd->sc_bcount > 0) { 1252 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1253 goto doseek; 1254 } 1255 fdfinish(fd, bp); 1256 goto loop; 1257 1258 case DORESET: 1259 /* try a reset, keep motor on */ 1260 fd_set_motor(fdc, 1); 1261 delay(100); 1262 fd_set_motor(fdc, 0); 1263 fdc->sc_state = RESETCOMPLETE; 1264 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1265 return 1; /* will return later */ 1266 1267 case RESETCOMPLETE: 1268 callout_stop(&fdc->sc_timo_ch); 1269 /* clear the controller output buffer */ 1270 for (i = 0; i < 4; i++) { 1271 out_fdc(iot, ioh, NE7CMD_SENSEI); 1272 (void) fdcresult(fdc); 1273 } 1274 1275 /* fall through */ 1276 case DORECAL: 1277 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1278 out_fdc(iot, ioh, fd->sc_drive); 1279 fdc->sc_state = RECALWAIT; 1280 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1281 return 1; /* will return later */ 1282 1283 case RECALWAIT: 1284 callout_stop(&fdc->sc_timo_ch); 1285 fdc->sc_state = RECALCOMPLETE; 1286 /* allow 1/30 second for heads to settle */ 1287 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 1288 return 1; /* will return later */ 1289 1290 case RECALCOMPLETE: 1291 out_fdc(iot, ioh, NE7CMD_SENSEI); 1292 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1293 #ifdef FD_DEBUG 1294 fdcstatus(fd->sc_dev, 2, "recalibrate failed"); 1295 #endif 1296 fdcretry(fdc); 1297 goto loop; 1298 } 1299 fd->sc_cylin = 0; 1300 goto doseek; 1301 1302 case MOTORWAIT: 1303 if (fd->sc_flags & FD_MOTOR_WAIT) 1304 return 1; /* time's not up yet */ 1305 goto doseek; 1306 1307 default: 1308 fdcstatus(fd->sc_dev, 0, "stray interrupt"); 1309 return 1; 1310 } 1311 #undef st0 1312 #undef cyl 1313 1314 out: 1315 cv_signal(&fdc->sc_cv); 1316 return 1; 1317 } 1318 1319 static void 1320 fdcintrcb(void *arg) 1321 { 1322 (void)fdcintr(arg); 1323 } 1324 1325 int 1326 fdcintr(void *arg) 1327 { 1328 int rc; 1329 struct fdc_softc *fdc = arg; 1330 1331 mutex_enter(&fdc->sc_mtx); 1332 rc = fdcintr1(fdc); 1333 mutex_exit(&fdc->sc_mtx); 1334 return rc; 1335 } 1336 1337 void 1338 fdcretry(struct fdc_softc *fdc) 1339 { 1340 char bits[64]; 1341 struct fd_softc *fd; 1342 struct buf *bp; 1343 1344 fd = TAILQ_FIRST(&fdc->sc_drives); 1345 bp = BUFQ_PEEK(fd->sc_q); 1346 1347 if (fd->sc_opts & FDOPT_NORETRY) 1348 goto fail; 1349 switch (fdc->sc_errors) { 1350 case 0: 1351 /* try again */ 1352 fdc->sc_state = DOSEEK; 1353 break; 1354 1355 case 1: case 2: case 3: 1356 /* didn't work; try recalibrating */ 1357 fdc->sc_state = DORECAL; 1358 break; 1359 1360 case 4: 1361 /* still no go; reset the bastard */ 1362 fdc->sc_state = DORESET; 1363 break; 1364 1365 default: 1366 fail: 1367 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1368 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1369 fd->sc_skip / FDC_BSIZE, NULL); 1370 1371 printf(" (st0 %s", 1372 bitmask_snprintf(fdc->sc_status[0], 1373 NE7_ST0BITS, bits, 1374 sizeof(bits))); 1375 printf(" st1 %s", 1376 bitmask_snprintf(fdc->sc_status[1], 1377 NE7_ST1BITS, bits, 1378 sizeof(bits))); 1379 printf(" st2 %s", 1380 bitmask_snprintf(fdc->sc_status[2], 1381 NE7_ST2BITS, bits, 1382 sizeof(bits))); 1383 printf(" cyl %d head %d sec %d)\n", 1384 fdc->sc_status[3], 1385 fdc->sc_status[4], 1386 fdc->sc_status[5]); 1387 } 1388 1389 bp->b_error = EIO; 1390 fdfinish(fd, bp); 1391 } 1392 fdc->sc_errors++; 1393 } 1394 1395 int 1396 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1397 { 1398 struct fd_softc *fd = 1399 device_lookup_private(&fd_cd, FDUNIT(dev)); 1400 struct fdformat_parms *form_parms; 1401 struct fdformat_cmd *form_cmd; 1402 struct ne7_fd_formb *fd_formb; 1403 struct disklabel buffer; 1404 int error; 1405 unsigned int scratch; 1406 int il[FD_MAX_NSEC + 1]; 1407 int i, j; 1408 #ifdef __HAVE_OLD_DISKLABEL 1409 struct disklabel newlabel; 1410 #endif 1411 1412 switch (cmd) { 1413 case DIOCGDINFO: 1414 #ifdef __HAVE_OLD_DISKLABEL 1415 case ODIOCGDINFO: 1416 #endif 1417 memset(&buffer, 0, sizeof(buffer)); 1418 1419 buffer.d_secpercyl = fd->sc_type->seccyl; 1420 buffer.d_type = DTYPE_FLOPPY; 1421 buffer.d_secsize = FDC_BSIZE; 1422 1423 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1424 return EINVAL; 1425 1426 #ifdef __HAVE_OLD_DISKLABEL 1427 if (cmd == ODIOCGDINFO) { 1428 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1429 return ENOTTY; 1430 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1431 } else 1432 #endif 1433 *(struct disklabel *)addr = buffer; 1434 return 0; 1435 1436 case DIOCWLABEL: 1437 if ((flag & FWRITE) == 0) 1438 return EBADF; 1439 /* XXX do something */ 1440 return 0; 1441 1442 case DIOCWDINFO: 1443 #ifdef __HAVE_OLD_DISKLABEL 1444 case ODIOCWDINFO: 1445 #endif 1446 { 1447 struct disklabel *lp; 1448 1449 if ((flag & FWRITE) == 0) 1450 return EBADF; 1451 #ifdef __HAVE_OLD_DISKLABEL 1452 if (cmd == ODIOCWDINFO) { 1453 memset(&newlabel, 0, sizeof newlabel); 1454 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1455 lp = &newlabel; 1456 } else 1457 #endif 1458 lp = (struct disklabel *)addr; 1459 1460 error = setdisklabel(&buffer, lp, 0, NULL); 1461 if (error) 1462 return error; 1463 1464 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1465 return error; 1466 } 1467 1468 case FDIOCGETFORMAT: 1469 form_parms = (struct fdformat_parms *)addr; 1470 form_parms->fdformat_version = FDFORMAT_VERSION; 1471 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1472 form_parms->ncyl = fd->sc_type->cyls; 1473 form_parms->nspt = fd->sc_type->sectrac; 1474 form_parms->ntrk = fd->sc_type->heads; 1475 form_parms->stepspercyl = fd->sc_type->step; 1476 form_parms->gaplen = fd->sc_type->gap2; 1477 form_parms->fillbyte = fd->sc_type->fillbyte; 1478 form_parms->interleave = fd->sc_type->interleave; 1479 switch (fd->sc_type->rate) { 1480 case FDC_500KBPS: 1481 form_parms->xfer_rate = 500 * 1024; 1482 break; 1483 case FDC_300KBPS: 1484 form_parms->xfer_rate = 300 * 1024; 1485 break; 1486 case FDC_250KBPS: 1487 form_parms->xfer_rate = 250 * 1024; 1488 break; 1489 default: 1490 return EINVAL; 1491 } 1492 return 0; 1493 1494 case FDIOCSETFORMAT: 1495 if((flag & FWRITE) == 0) 1496 return EBADF; /* must be opened for writing */ 1497 form_parms = (struct fdformat_parms *)addr; 1498 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1499 return EINVAL; /* wrong version of formatting prog */ 1500 1501 scratch = form_parms->nbps >> 7; 1502 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1503 scratch & ~(1 << (ffs(scratch)-1))) 1504 /* not a power-of-two multiple of 128 */ 1505 return EINVAL; 1506 1507 switch (form_parms->xfer_rate) { 1508 case 500 * 1024: 1509 fd->sc_type->rate = FDC_500KBPS; 1510 break; 1511 case 300 * 1024: 1512 fd->sc_type->rate = FDC_300KBPS; 1513 break; 1514 case 250 * 1024: 1515 fd->sc_type->rate = FDC_250KBPS; 1516 break; 1517 default: 1518 return EINVAL; 1519 } 1520 1521 if (form_parms->nspt > FD_MAX_NSEC || 1522 form_parms->fillbyte > 0xff || 1523 form_parms->interleave > 0xff) 1524 return EINVAL; 1525 fd->sc_type->sectrac = form_parms->nspt; 1526 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1527 return EINVAL; 1528 fd->sc_type->heads = form_parms->ntrk; 1529 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1530 fd->sc_type->secsize = ffs(scratch)-1; 1531 fd->sc_type->gap2 = form_parms->gaplen; 1532 fd->sc_type->cyls = form_parms->ncyl; 1533 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1534 form_parms->nbps / DEV_BSIZE; 1535 fd->sc_type->step = form_parms->stepspercyl; 1536 fd->sc_type->fillbyte = form_parms->fillbyte; 1537 fd->sc_type->interleave = form_parms->interleave; 1538 return 0; 1539 1540 case FDIOCFORMAT_TRACK: 1541 if((flag & FWRITE) == 0) 1542 return EBADF; /* must be opened for writing */ 1543 form_cmd = (struct fdformat_cmd *)addr; 1544 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1545 return EINVAL; /* wrong version of formatting prog */ 1546 1547 if (form_cmd->head >= fd->sc_type->heads || 1548 form_cmd->cylinder >= fd->sc_type->cyls) { 1549 return EINVAL; 1550 } 1551 1552 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1553 M_TEMP, M_NOWAIT); 1554 if (fd_formb == 0) 1555 return ENOMEM; 1556 1557 fd_formb->head = form_cmd->head; 1558 fd_formb->cyl = form_cmd->cylinder; 1559 fd_formb->transfer_rate = fd->sc_type->rate; 1560 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1561 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1562 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1563 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1564 1565 memset(il, 0, sizeof il); 1566 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1567 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1568 j++; 1569 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1570 j += fd->sc_type->interleave; 1571 } 1572 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1573 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1574 fd_formb->fd_formb_headno(i) = form_cmd->head; 1575 fd_formb->fd_formb_secno(i) = il[i+1]; 1576 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1577 } 1578 1579 error = fdformat(dev, fd_formb, l); 1580 free(fd_formb, M_TEMP); 1581 return error; 1582 1583 case FDIOCGETOPTS: /* get drive options */ 1584 *(int *)addr = fd->sc_opts; 1585 return 0; 1586 1587 case FDIOCSETOPTS: /* set drive options */ 1588 fd->sc_opts = *(int *)addr; 1589 return 0; 1590 1591 default: 1592 return ENOTTY; 1593 } 1594 1595 #ifdef DIAGNOSTIC 1596 panic("fdioctl: impossible"); 1597 #endif 1598 } 1599 1600 int 1601 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1602 { 1603 int rv = 0; 1604 struct fd_softc *fd = 1605 device_lookup_private(&fd_cd, FDUNIT(dev)); 1606 struct fd_type *type = fd->sc_type; 1607 struct buf *bp; 1608 1609 /* set up a buffer header for fdstrategy() */ 1610 bp = getiobuf(NULL, false); 1611 if (bp == NULL) 1612 return ENOBUFS; 1613 1614 bp->b_cflags = BC_BUSY; 1615 bp->b_flags = B_PHYS | B_FORMAT; 1616 bp->b_proc = l->l_proc; 1617 bp->b_dev = dev; 1618 1619 /* 1620 * calculate a fake blkno, so fdstrategy() would initiate a 1621 * seek to the requested cylinder 1622 */ 1623 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1624 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1625 1626 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1627 bp->b_data = (void *)finfo; 1628 1629 #ifdef DEBUG 1630 printf("fdformat: blkno %" PRIx64 " count %x\n", 1631 bp->b_blkno, bp->b_bcount); 1632 #endif 1633 1634 /* now do the format */ 1635 fdstrategy(bp); 1636 1637 /* ...and wait for it to complete */ 1638 rv = biowait(bp); 1639 putiobuf(bp); 1640 return rv; 1641 } 1642 1643 /* 1644 * Mountroot hook: prompt the user to enter the root file system 1645 * floppy. 1646 */ 1647 void 1648 fd_mountroot_hook(device_t dev) 1649 { 1650 int c; 1651 1652 printf("Insert filesystem floppy and press return."); 1653 cnpollc(1); 1654 for (;;) { 1655 c = cngetc(); 1656 if ((c == '\r') || (c == '\n')) { 1657 printf("\n"); 1658 break; 1659 } 1660 } 1661 cnpollc(0); 1662 } 1663 1664 static void 1665 fd_set_properties(struct fd_softc *fd) 1666 { 1667 prop_dictionary_t disk_info, odisk_info, geom; 1668 const struct fd_type *fdt; 1669 int secsize; 1670 1671 fdt = fd->sc_type; 1672 if (fdt == NULL) { 1673 fdt = fd->sc_deftype; 1674 if (fdt == NULL) 1675 return; 1676 } 1677 1678 disk_info = prop_dictionary_create(); 1679 1680 geom = prop_dictionary_create(); 1681 1682 prop_dictionary_set_uint64(geom, "sectors-per-unit", 1683 fdt->size); 1684 1685 switch (fdt->secsize) { 1686 case 2: 1687 secsize = 512; 1688 break; 1689 case 3: 1690 secsize = 1024; 1691 break; 1692 default: 1693 secsize = 0; 1694 } 1695 1696 prop_dictionary_set_uint32(geom, "sector-size", 1697 secsize); 1698 1699 prop_dictionary_set_uint16(geom, "sectors-per-track", 1700 fdt->sectrac); 1701 1702 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1703 fdt->heads); 1704 1705 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1706 fdt->cyls); 1707 1708 prop_dictionary_set(disk_info, "geometry", geom); 1709 prop_object_release(geom); 1710 1711 prop_dictionary_set(device_properties(fd->sc_dev), 1712 "disk-info", disk_info); 1713 1714 /* 1715 * Don't release disk_info here; we keep a reference to it. 1716 * disk_detach() will release it when we go away. 1717 */ 1718 1719 odisk_info = fd->sc_dk.dk_info; 1720 fd->sc_dk.dk_info = disk_info; 1721 if (odisk_info) 1722 prop_object_release(odisk_info); 1723 } 1724