1 /* $NetBSD: fd.c,v 1.115 2021/04/24 23:36:55 thorpej 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 1.115 2021/04/24 23:36:55 thorpej Exp $"); 85 86 #include "opt_ddb.h" 87 88 /* 89 * XXX This driver should be properly MI'd some day, but this allows us 90 * XXX to eliminate a lot of code duplication for now. 91 */ 92 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 93 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 94 !defined(prep) && !defined(sandpoint) && !defined(x86_64) && \ 95 !defined(mvmeppc) && !defined(ofppc) 96 #error platform not supported by this driver, yet 97 #endif 98 99 #include <sys/param.h> 100 #include <sys/systm.h> 101 #include <sys/callout.h> 102 #include <sys/kernel.h> 103 #include <sys/file.h> 104 #include <sys/ioctl.h> 105 #include <sys/device.h> 106 #include <sys/disklabel.h> 107 #include <sys/disk.h> 108 #include <sys/buf.h> 109 #include <sys/bufq.h> 110 #include <sys/malloc.h> 111 #include <sys/uio.h> 112 #include <sys/syslog.h> 113 #include <sys/queue.h> 114 #include <sys/proc.h> 115 #include <sys/fdio.h> 116 #include <sys/conf.h> 117 #include <sys/vnode.h> 118 #include <sys/rndsource.h> 119 120 #include <prop/proplib.h> 121 122 #include <dev/cons.h> 123 124 #include <sys/cpu.h> 125 #include <sys/bus.h> 126 127 #include "locators.h" 128 129 #if defined(atari) 130 /* 131 * On the atari, it is configured as fdcisa 132 */ 133 #define FDCCF_DRIVE FDCISACF_DRIVE 134 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 135 136 #define fd_cd fdisa_cd 137 #endif /* atari */ 138 139 #include <sys/intr.h> 140 141 #include <dev/isa/isavar.h> 142 #include <dev/isa/isadmavar.h> 143 144 #include <dev/isa/fdreg.h> 145 #include <dev/isa/fdcvar.h> 146 147 #if defined(i386) || defined(x86_64) 148 149 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 150 #include <i386/isa/nvram.h> 151 152 #if defined(i386) 153 #include "mca.h" 154 #if NMCA > 0 155 #include <machine/mca_machdep.h> /* for MCA_system */ 156 #endif 157 #endif 158 159 #endif /* i386 || x86_64 */ 160 161 #include <dev/isa/fdvar.h> 162 163 #define FDUNIT(dev) (minor(dev) / 8) 164 #define FDTYPE(dev) (minor(dev) % 8) 165 166 /* (mis)use device use flag to identify format operation */ 167 #define B_FORMAT B_DEVPRIVATE 168 169 /* controller driver configuration */ 170 int fdprint(void *, const char *); 171 172 #if NMCA > 0 173 /* MCA - specific entries */ 174 const struct fd_type mca_fd_types[] = { 175 { 18,2,36,2,0xff,0x0f,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette - XXX try 16ms step rate */ 176 { 9,2,18,2,0xff,0x4f,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette - XXX try 24ms step rate */ 177 }; 178 #endif /* NMCA > 0 */ 179 180 /* The order of entries in the following table is important -- BEWARE! */ 181 182 #if defined(atari) 183 const struct fd_type fd_types[] = { 184 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 185 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 186 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 187 }; 188 #else 189 const struct fd_type fd_types[] = { 190 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 191 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 192 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 193 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 194 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 195 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 196 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 197 }; 198 #endif /* defined(atari) */ 199 200 void fdcfinishattach(device_t); 201 int fdprobe(device_t, cfdata_t, void *); 202 void fdattach(device_t, device_t, void *); 203 static int fddetach(device_t, int); 204 static int fdcintr1(struct fdc_softc *); 205 static void fdcintrcb(void *); 206 static bool fdcsuspend(device_t, const pmf_qual_t *); 207 static bool fdcresume(device_t, const pmf_qual_t *); 208 209 extern struct cfdriver fd_cd; 210 211 #ifdef atari 212 CFATTACH_DECL_NEW(fdisa, sizeof(struct fd_softc), 213 fdprobe, fdattach, fddetach, NULL); 214 #else 215 CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), 216 fdprobe, fdattach, fddetach, NULL); 217 #endif 218 219 dev_type_open(fdopen); 220 dev_type_close(fdclose); 221 dev_type_read(fdread); 222 dev_type_write(fdwrite); 223 dev_type_ioctl(fdioctl); 224 dev_type_strategy(fdstrategy); 225 226 const struct bdevsw fd_bdevsw = { 227 .d_open = fdopen, 228 .d_close = fdclose, 229 .d_strategy = fdstrategy, 230 .d_ioctl = fdioctl, 231 .d_dump = nodump, 232 .d_psize = nosize, 233 .d_discard = nodiscard, 234 .d_flag = D_DISK 235 }; 236 237 const struct cdevsw fd_cdevsw = { 238 .d_open = fdopen, 239 .d_close = fdclose, 240 .d_read = fdread, 241 .d_write = fdwrite, 242 .d_ioctl = fdioctl, 243 .d_stop = nostop, 244 .d_tty = notty, 245 .d_poll = nopoll, 246 .d_mmap = nommap, 247 .d_kqfilter = nokqfilter, 248 .d_discard = nodiscard, 249 .d_flag = D_DISK 250 }; 251 252 void fdgetdisklabel(struct fd_softc *); 253 int fd_get_parms(struct fd_softc *); 254 void fdstart(struct fd_softc *); 255 256 struct dkdriver fddkdriver = { 257 .d_strategy = fdstrategy, 258 .d_minphys = minphys 259 }; 260 261 #if defined(i386) || defined(x86_64) 262 const struct fd_type *fd_nvtotype(const char *, int, int); 263 #endif /* i386 || x86_64 */ 264 void fd_set_motor(struct fdc_softc *fdc, int reset); 265 void fd_motor_off(void *arg); 266 void fd_motor_on(void *arg); 267 int fdcresult(struct fdc_softc *fdc); 268 void fdcstart(struct fdc_softc *fdc); 269 void fdcstatus(device_t, int, const char *); 270 void fdctimeout(void *arg); 271 void fdcretry(struct fdc_softc *fdc); 272 void fdfinish(struct fd_softc *fd, struct buf *bp); 273 static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 274 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 275 static void fd_set_geometry(struct fd_softc *fd); 276 277 void fd_mountroot_hook(device_t); 278 279 /* 280 * Arguments passed between fdcattach and fdprobe. 281 */ 282 struct fdc_attach_args { 283 int fa_drive; 284 const struct fd_type *fa_deftype; 285 }; 286 287 /* 288 * Print the location of a disk drive (called just before attaching the 289 * the drive). If `fdc' is not NULL, the drive was found but was not 290 * in the system config file; print the drive name as well. 291 * Return QUIET (config_find ignores this if the device was configured) to 292 * avoid printing `fdN not configured' messages. 293 */ 294 int 295 fdprint(void *aux, const char *fdc) 296 { 297 struct fdc_attach_args *fa = aux; 298 299 if (!fdc) 300 aprint_normal(" drive %d", fa->fa_drive); 301 return QUIET; 302 } 303 304 static bool 305 fdcresume(device_t self, const pmf_qual_t *qual) 306 { 307 struct fdc_softc *fdc = device_private(self); 308 309 mutex_enter(&fdc->sc_mtx); 310 (void)fdcintr1(fdc); 311 mutex_exit(&fdc->sc_mtx); 312 return true; 313 } 314 315 static bool 316 fdcsuspend(device_t self, const pmf_qual_t *qual) 317 { 318 struct fdc_softc *fdc = device_private(self); 319 int drive; 320 struct fd_softc *fd; 321 322 mutex_enter(&fdc->sc_mtx); 323 while (fdc->sc_state != DEVIDLE) 324 cv_wait(&fdc->sc_cv, &fdc->sc_mtx); 325 for (drive = 0; drive < 4; drive++) { 326 if ((fd = fdc->sc_fd[drive]) == NULL) 327 continue; 328 fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); 329 } 330 fd_set_motor(fdc, 0); 331 mutex_exit(&fdc->sc_mtx); 332 return true; 333 } 334 335 void 336 fdc_childdet(device_t self, device_t child) 337 { 338 struct fdc_softc *fdc = device_private(self); 339 struct fd_softc *fd = device_private(child); 340 int drive = fd->sc_drive; 341 342 KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ 343 fdc->sc_fd[drive] = NULL; 344 } 345 346 int 347 fdcdetach(device_t self, int flags) 348 { 349 int rc; 350 struct fdc_softc *fdc = device_private(self); 351 352 if ((rc = config_detach_children(self, flags)) != 0) 353 return rc; 354 355 pmf_device_deregister(self); 356 357 isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); 358 isa_drq_free(fdc->sc_ic, fdc->sc_drq); 359 360 callout_destroy(&fdc->sc_intr_ch); 361 callout_destroy(&fdc->sc_timo_ch); 362 363 cv_destroy(&fdc->sc_cv); 364 mutex_destroy(&fdc->sc_mtx); 365 366 return 0; 367 } 368 369 void 370 fdcattach(struct fdc_softc *fdc) 371 { 372 mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); 373 cv_init(&fdc->sc_cv, "fdcwake"); 374 callout_init(&fdc->sc_timo_ch, 0); 375 callout_init(&fdc->sc_intr_ch, 0); 376 377 fdc->sc_state = DEVIDLE; 378 TAILQ_INIT(&fdc->sc_drives); 379 380 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 381 382 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 383 aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", 384 fdc->sc_drq); 385 return; 386 } 387 388 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 389 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 390 aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); 391 return; 392 } 393 394 config_interrupts(fdc->sc_dev, fdcfinishattach); 395 396 if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { 397 aprint_error_dev(fdc->sc_dev, 398 "cannot set power mgmt handler\n"); 399 } 400 } 401 402 void 403 fdcfinishattach(device_t self) 404 { 405 struct fdc_softc *fdc = device_private(self); 406 bus_space_tag_t iot = fdc->sc_iot; 407 bus_space_handle_t ioh = fdc->sc_ioh; 408 struct fdc_attach_args fa; 409 410 /* 411 * Reset the controller to get it into a known state. Not all 412 * probes necessarily need do this to discover the controller up 413 * front, so don't assume anything. 414 */ 415 416 bus_space_write_1(iot, ioh, fdout, 0); 417 delay(100); 418 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 419 420 /* see if it can handle a command */ 421 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 422 aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); 423 return; 424 } 425 out_fdc(iot, ioh, 0xdf); 426 out_fdc(iot, ioh, 2); 427 428 #if defined(i386) || defined(x86_64) 429 /* 430 * The NVRAM info only tells us about the first two disks on the 431 * `primary' floppy controller. 432 */ 433 /* XXX device_unit() abuse */ 434 if (device_unit(fdc->sc_dev) == 0) { 435 int type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 436 fdc->sc_known = 1; 437 fdc->sc_knownfds[0] = fd_nvtotype(device_xname(fdc->sc_dev), 438 type, 0); 439 if (fdc->sc_knownfds[0] != NULL) 440 fdc->sc_present |= 1; 441 fdc->sc_knownfds[1] = fd_nvtotype(device_xname(fdc->sc_dev), 442 type, 1); 443 if (fdc->sc_knownfds[1] != NULL) 444 fdc->sc_present |= 2; 445 } 446 #endif /* i386 || x86_64 */ 447 448 /* physical limit: four drives per controller. */ 449 fdc->sc_state = PROBING; 450 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 451 if (fdc->sc_known) { 452 if (fdc->sc_present & (1 << fa.fa_drive)) { 453 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 454 config_found(fdc->sc_dev, (void *)&fa, 455 fdprint, CFARG_EOL); 456 } 457 } else { 458 #if defined(atari) 459 /* 460 * Atari has a different ordening, defaults to 1.44 461 */ 462 fa.fa_deftype = &fd_types[2]; 463 /* Atari also configures ISA fdc(4) as "fdcisa" */ 464 config_found(fdc->sc_dev, &fa, fdprint, 465 CFARG_IATTR, "fdcisa", 466 CFARG_EOL); 467 #else 468 /* 469 * Default to 1.44MB on Alpha and BeBox. How do we tell 470 * on these platforms? 471 */ 472 fa.fa_deftype = &fd_types[0]; 473 config_found(fdc->sc_dev, &fa, fdprint, 474 CFARG_IATTR, "fdc", 475 CFARG_EOL); 476 #endif 477 } 478 } 479 fdc->sc_state = DEVIDLE; 480 } 481 482 int 483 fdprobe(device_t parent, cfdata_t match, void *aux) 484 { 485 struct fdc_softc *fdc = device_private(parent); 486 cfdata_t cf = match; 487 struct fdc_attach_args *fa = aux; 488 int drive = fa->fa_drive; 489 bus_space_tag_t iot = fdc->sc_iot; 490 bus_space_handle_t ioh = fdc->sc_ioh; 491 int n; 492 493 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 494 cf->cf_loc[FDCCF_DRIVE] != drive) 495 return 0; 496 /* 497 * XXX 498 * This is to work around some odd interactions between this driver 499 * and SMC Ethernet cards. 500 */ 501 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 502 return 0; 503 504 /* Use PNP information if available */ 505 if (fdc->sc_known) 506 return 1; 507 508 mutex_enter(&fdc->sc_mtx); 509 /* toss any interrupt status */ 510 for (n = 0; n < 4; n++) { 511 out_fdc(iot, ioh, NE7CMD_SENSEI); 512 (void) fdcresult(fdc); 513 } 514 /* select drive and turn on motor */ 515 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 516 /* wait for motor to spin up */ 517 /* XXX check sc_probe */ 518 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 519 out_fdc(iot, ioh, NE7CMD_RECAL); 520 out_fdc(iot, ioh, drive); 521 /* wait for recalibrate, up to 2s */ 522 /* XXX check sc_probe */ 523 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 524 #ifdef FD_DEBUG 525 /* XXX */ 526 printf("fdprobe: got intr\n"); 527 #endif 528 } 529 out_fdc(iot, ioh, NE7CMD_SENSEI); 530 n = fdcresult(fdc); 531 #ifdef FD_DEBUG 532 { 533 int i; 534 printf("fdprobe: status"); 535 for (i = 0; i < n; i++) 536 printf(" %x", fdc->sc_status[i]); 537 printf("\n"); 538 } 539 #endif 540 /* turn off motor */ 541 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 542 mutex_exit(&fdc->sc_mtx); 543 544 #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ 545 if (n != 2 || (fdc->sc_status[1] != 0)) 546 return 0; 547 #else 548 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 549 return 0; 550 #endif /* bebox */ 551 552 return 1; 553 } 554 555 /* 556 * Controller is working, and drive responded. Attach it. 557 */ 558 void 559 fdattach(device_t parent, device_t self, void *aux) 560 { 561 struct fdc_softc *fdc = device_private(parent); 562 struct fd_softc *fd = device_private(self); 563 struct fdc_attach_args *fa = aux; 564 const struct fd_type *type = fa->fa_deftype; 565 int drive = fa->fa_drive; 566 567 fd->sc_dev = self; 568 569 callout_init(&fd->sc_motoron_ch, 0); 570 callout_init(&fd->sc_motoroff_ch, 0); 571 572 /* XXX Allow `flags' to override device type? */ 573 574 if (type) 575 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 576 type->cyls, type->heads, type->sectrac); 577 else 578 aprint_normal(": density unknown\n"); 579 580 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 581 fd->sc_cylin = -1; 582 fd->sc_drive = drive; 583 fd->sc_deftype = type; 584 fdc->sc_fd[drive] = fd; 585 586 /* 587 * Initialize and attach the disk structure. 588 */ 589 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 590 disk_attach(&fd->sc_dk); 591 592 /* 593 * Establish a mountroot hook. 594 */ 595 fd->sc_roothook = 596 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 597 598 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 599 RND_TYPE_DISK, RND_FLAG_DEFAULT); 600 601 fd_set_geometry(fd); 602 603 if (!pmf_device_register(self, NULL, NULL)) 604 aprint_error_dev(self, "cannot set power mgmt handler\n"); 605 } 606 607 static int 608 fddetach(device_t self, int flags) 609 { 610 struct fd_softc *fd = device_private(self); 611 int bmaj, cmaj, i, mn; 612 613 fd_motor_off(fd); 614 615 /* locate the major number */ 616 bmaj = bdevsw_lookup_major(&fd_bdevsw); 617 cmaj = cdevsw_lookup_major(&fd_cdevsw); 618 619 /* Nuke the vnodes for any open instances. */ 620 for (i = 0; i < MAXPARTITIONS; i++) { 621 mn = DISKMINOR(device_unit(self), i); 622 vdevgone(bmaj, mn, mn, VBLK); 623 vdevgone(cmaj, mn, mn, VCHR); 624 } 625 626 pmf_device_deregister(self); 627 628 #if 0 /* XXX need to undo at detach? */ 629 fd_set_geometry(fd); 630 #endif 631 632 rnd_detach_source(&fd->rnd_source); 633 634 disk_detach(&fd->sc_dk); 635 disk_destroy(&fd->sc_dk); 636 637 /* Kill off any queued buffers. */ 638 bufq_drain(fd->sc_q); 639 640 bufq_free(fd->sc_q); 641 642 callout_destroy(&fd->sc_motoroff_ch); 643 callout_destroy(&fd->sc_motoron_ch); 644 645 return 0; 646 } 647 648 #if defined(i386) || defined(x86_64) 649 /* 650 * Translate nvram type into internal data structure. Return NULL for 651 * none/unknown/unusable. 652 */ 653 const struct fd_type * 654 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 655 { 656 int type; 657 658 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 659 switch (type) { 660 case NVRAM_DISKETTE_NONE: 661 return NULL; 662 case NVRAM_DISKETTE_12M: 663 return &fd_types[1]; 664 case NVRAM_DISKETTE_TYPE5: 665 case NVRAM_DISKETTE_TYPE6: 666 /* XXX We really ought to handle 2.88MB format. */ 667 case NVRAM_DISKETTE_144M: 668 #if NMCA > 0 669 if (MCA_system) 670 return &mca_fd_types[0]; 671 else 672 #endif /* NMCA > 0 */ 673 return &fd_types[0]; 674 case NVRAM_DISKETTE_360K: 675 return &fd_types[3]; 676 case NVRAM_DISKETTE_720K: 677 #if NMCA > 0 678 if (MCA_system) 679 return &mca_fd_types[1]; 680 else 681 #endif /* NMCA > 0 */ 682 return &fd_types[4]; 683 default: 684 printf("%s: drive %d: unknown device type 0x%x\n", 685 fdc, drive, type); 686 return NULL; 687 } 688 } 689 #endif /* i386 || x86_64 */ 690 691 static const struct fd_type * 692 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 693 { 694 u_int type = FDTYPE(dev); 695 696 if (type > __arraycount(fd_types)) 697 return NULL; 698 return type ? &fd_types[type - 1] : fd->sc_deftype; 699 } 700 701 void 702 fdstrategy(struct buf *bp) 703 { 704 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 705 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 706 int sz; 707 708 /* Valid unit, controller, and request? */ 709 if (bp->b_blkno < 0 || 710 ((bp->b_bcount % FDC_BSIZE) != 0 && 711 (bp->b_flags & B_FORMAT) == 0)) { 712 bp->b_error = EINVAL; 713 goto done; 714 } 715 716 /* If it's a null transfer, return immediately. */ 717 if (bp->b_bcount == 0) 718 goto done; 719 720 sz = howmany(bp->b_bcount, FDC_BSIZE); 721 722 if (bp->b_blkno + sz > fd->sc_type->size) { 723 sz = fd->sc_type->size - bp->b_blkno; 724 if (sz == 0) { 725 /* If exactly at end of disk, return EOF. */ 726 goto done; 727 } 728 if (sz < 0) { 729 /* If past end of disk, return EINVAL. */ 730 bp->b_error = EINVAL; 731 goto done; 732 } 733 /* Otherwise, truncate request. */ 734 bp->b_bcount = sz << DEV_BSHIFT; 735 } 736 737 bp->b_rawblkno = bp->b_blkno; 738 bp->b_cylinder = 739 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 740 741 #ifdef FD_DEBUG 742 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 743 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 744 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 745 #endif 746 747 /* Queue transfer on drive, activate drive and controller if idle. */ 748 mutex_enter(&fdc->sc_mtx); 749 bufq_put(fd->sc_q, bp); 750 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 751 if (fd->sc_active == 0) 752 fdstart(fd); 753 #ifdef DIAGNOSTIC 754 else { 755 if (fdc->sc_state == DEVIDLE) { 756 printf("fdstrategy: controller inactive\n"); 757 fdcstart(fdc); 758 } 759 } 760 #endif 761 mutex_exit(&fdc->sc_mtx); 762 return; 763 764 done: 765 /* Toss transfer; we're done early. */ 766 bp->b_resid = bp->b_bcount; 767 biodone(bp); 768 } 769 770 void 771 fdstart(struct fd_softc *fd) 772 { 773 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 774 int active = !TAILQ_EMPTY(&fdc->sc_drives); 775 776 KASSERT(mutex_owned(&fdc->sc_mtx)); 777 /* Link into controller queue. */ 778 fd->sc_active = 1; 779 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 780 781 /* If controller not already active, start it. */ 782 if (!active) 783 fdcstart(fdc); 784 } 785 786 void 787 fdfinish(struct fd_softc *fd, struct buf *bp) 788 { 789 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 790 791 /* 792 * Move this drive to the end of the queue to give others a `fair' 793 * chance. We only force a switch if N operations are completed while 794 * another drive is waiting to be serviced, since there is a long motor 795 * startup delay whenever we switch. 796 */ 797 (void)bufq_get(fd->sc_q); 798 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 799 fd->sc_ops = 0; 800 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 801 if (bufq_peek(fd->sc_q) != NULL) 802 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 803 else 804 fd->sc_active = 0; 805 } 806 bp->b_resid = fd->sc_bcount; 807 fd->sc_skip = 0; 808 809 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 810 811 biodone(bp); 812 /* turn off motor 5s from now */ 813 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 814 fdc->sc_state = DEVIDLE; 815 } 816 817 int 818 fdread(dev_t dev, struct uio *uio, int flags) 819 { 820 821 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 822 } 823 824 int 825 fdwrite(dev_t dev, struct uio *uio, int flags) 826 { 827 828 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 829 } 830 831 void 832 fd_set_motor(struct fdc_softc *fdc, int reset) 833 { 834 struct fd_softc *fd; 835 u_char status; 836 int n; 837 838 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 839 status = fd->sc_drive; 840 else 841 status = 0; 842 if (!reset) 843 status |= FDO_FRST | FDO_FDMAEN; 844 for (n = 0; n < 4; n++) 845 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 846 status |= FDO_MOEN(n); 847 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 848 } 849 850 void 851 fd_motor_off(void *arg) 852 { 853 struct fd_softc *fd = arg; 854 struct fdc_softc *fdc; 855 856 fdc = device_private(device_parent(fd->sc_dev)); 857 858 mutex_enter(&fdc->sc_mtx); 859 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 860 fd_set_motor(fdc, 0); 861 mutex_exit(&fdc->sc_mtx); 862 } 863 864 void 865 fd_motor_on(void *arg) 866 { 867 struct fd_softc *fd = arg; 868 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 869 870 mutex_enter(&fdc->sc_mtx); 871 fd->sc_flags &= ~FD_MOTOR_WAIT; 872 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 873 (void)fdcintr1(fdc); 874 mutex_exit(&fdc->sc_mtx); 875 } 876 877 int 878 fdcresult(struct fdc_softc *fdc) 879 { 880 bus_space_tag_t iot = fdc->sc_iot; 881 bus_space_handle_t ioh = fdc->sc_ioh; 882 u_char i; 883 u_int j = 100000, 884 n = 0; 885 886 for (; j; j--) { 887 i = bus_space_read_1(iot, ioh, fdsts) & 888 (NE7_DIO | NE7_RQM | NE7_CB); 889 if (i == NE7_RQM) 890 return n; 891 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 892 if (n >= sizeof(fdc->sc_status)) { 893 log(LOG_ERR, "fdcresult: overrun\n"); 894 return -1; 895 } 896 fdc->sc_status[n++] = 897 bus_space_read_1(iot, ioh, fddata); 898 } 899 delay(10); 900 } 901 log(LOG_ERR, "fdcresult: timeout\n"); 902 return -1; 903 } 904 905 int 906 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 907 { 908 u_char i; 909 u_int j = 100000; 910 911 for (; j; j--) { 912 i = bus_space_read_1(iot, ioh, fdsts) & 913 (NE7_DIO | NE7_RQM); 914 if (i == NE7_RQM) { 915 bus_space_write_1(iot, ioh, fddata, x); 916 return 0; 917 } 918 delay(10); 919 } 920 return -1; 921 } 922 923 int 924 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 925 { 926 struct fd_softc *fd; 927 const struct fd_type *type; 928 929 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 930 if (fd == NULL) 931 return (ENXIO); 932 933 type = fd_dev_to_type(fd, dev); 934 if (type == NULL) 935 return ENXIO; 936 937 if ((fd->sc_flags & FD_OPEN) != 0 && 938 memcmp(fd->sc_type, type, sizeof(*type))) 939 return EBUSY; 940 941 fd->sc_type_copy = *type; 942 fd->sc_type = &fd->sc_type_copy; 943 fd->sc_cylin = -1; 944 fd->sc_flags |= FD_OPEN; 945 946 fd_set_geometry(fd); 947 948 return 0; 949 } 950 951 int 952 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 953 { 954 struct fd_softc *fd = 955 device_lookup_private(&fd_cd, FDUNIT(dev)); 956 957 fd->sc_flags &= ~FD_OPEN; 958 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 959 return 0; 960 } 961 962 void 963 fdcstart(struct fdc_softc *fdc) 964 { 965 966 KASSERT(mutex_owned(&fdc->sc_mtx)); 967 968 if (!device_is_active(fdc->sc_dev)) 969 return; 970 971 #ifdef DIAGNOSTIC 972 /* only got here if controller's drive queue was inactive; should 973 be in idle state */ 974 if (fdc->sc_state != DEVIDLE) { 975 printf("fdcstart: not idle\n"); 976 return; 977 } 978 #endif 979 (void)fdcintr1(fdc); 980 } 981 982 static void 983 fdcpstatus(int n, struct fdc_softc *fdc) 984 { 985 char bits[64]; 986 987 switch (n) { 988 case 0: 989 printf("\n"); 990 break; 991 case 2: 992 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 993 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 994 break; 995 case 7: 996 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 997 printf(" (st0 %s", bits); 998 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 999 printf(" st1 %s", bits); 1000 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1001 printf(" st2 %s", bits); 1002 printf(" cyl %d head %d sec %d)\n", 1003 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1004 break; 1005 #ifdef DIAGNOSTIC 1006 default: 1007 printf("\nfdcstatus: weird size"); 1008 break; 1009 #endif 1010 } 1011 } 1012 1013 void 1014 fdcstatus(device_t dv, int n, const char *s) 1015 { 1016 struct fdc_softc *fdc = device_private(device_parent(dv)); 1017 1018 if (n == 0) { 1019 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 1020 (void) fdcresult(fdc); 1021 n = 2; 1022 } 1023 fdcpstatus(n, fdc); 1024 1025 aprint_normal_dev(dv, "%s", s); 1026 1027 } 1028 1029 void 1030 fdctimeout(void *arg) 1031 { 1032 struct fdc_softc *fdc = arg; 1033 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1034 1035 mutex_enter(&fdc->sc_mtx); 1036 #ifdef DEBUG 1037 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 1038 #endif 1039 fdcstatus(fd->sc_dev, 0, "timeout"); 1040 1041 if (bufq_peek(fd->sc_q) != NULL) 1042 fdc->sc_state++; 1043 else 1044 fdc->sc_state = DEVIDLE; 1045 1046 (void)fdcintr1(fdc); 1047 mutex_exit(&fdc->sc_mtx); 1048 } 1049 1050 static int 1051 fdcintr1(struct fdc_softc *fdc) 1052 { 1053 #define st0 fdc->sc_status[0] 1054 #define cyl fdc->sc_status[1] 1055 struct fd_softc *fd; 1056 struct buf *bp; 1057 bus_space_tag_t iot = fdc->sc_iot; 1058 bus_space_handle_t ioh = fdc->sc_ioh; 1059 int read, head, sec, i, nblks; 1060 struct fd_type *type; 1061 struct ne7_fd_formb *finfo = NULL; 1062 1063 KASSERT(mutex_owned(&fdc->sc_mtx)); 1064 if (fdc->sc_state == PROBING) { 1065 #ifdef DEBUG 1066 printf("fdcintr: got probe interrupt\n"); 1067 #endif 1068 fdc->sc_probe++; 1069 goto out; 1070 } 1071 1072 loop: 1073 /* Is there a drive for the controller to do a transfer with? */ 1074 fd = TAILQ_FIRST(&fdc->sc_drives); 1075 if (fd == NULL) { 1076 fdc->sc_state = DEVIDLE; 1077 goto out; 1078 } 1079 1080 /* Is there a transfer to this drive? If not, deactivate drive. */ 1081 bp = bufq_peek(fd->sc_q); 1082 if (bp == NULL) { 1083 fd->sc_ops = 0; 1084 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1085 fd->sc_active = 0; 1086 goto loop; 1087 } 1088 1089 if (bp->b_flags & B_FORMAT) 1090 finfo = (struct ne7_fd_formb *)bp->b_data; 1091 1092 switch (fdc->sc_state) { 1093 case DEVIDLE: 1094 fdc->sc_errors = 0; 1095 fd->sc_skip = 0; 1096 fd->sc_bcount = bp->b_bcount; 1097 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1098 callout_stop(&fd->sc_motoroff_ch); 1099 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1100 fdc->sc_state = MOTORWAIT; 1101 return 1; 1102 } 1103 if ((fd->sc_flags & FD_MOTOR) == 0) { 1104 /* Turn on the motor, being careful about pairing. */ 1105 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1106 if (ofd && ofd->sc_flags & FD_MOTOR) { 1107 callout_stop(&ofd->sc_motoroff_ch); 1108 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1109 } 1110 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1111 fd_set_motor(fdc, 0); 1112 fdc->sc_state = MOTORWAIT; 1113 /* Allow .25s for motor to stabilize. */ 1114 callout_reset(&fd->sc_motoron_ch, hz / 4, 1115 fd_motor_on, fd); 1116 return 1; 1117 } 1118 /* Make sure the right drive is selected. */ 1119 fd_set_motor(fdc, 0); 1120 1121 /* fall through */ 1122 case DOSEEK: 1123 doseek: 1124 if (fd->sc_cylin == bp->b_cylinder) 1125 goto doio; 1126 1127 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1128 out_fdc(iot, ioh, fd->sc_type->steprate); 1129 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1130 1131 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1132 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1133 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1134 1135 fd->sc_cylin = -1; 1136 fdc->sc_state = SEEKWAIT; 1137 1138 iostat_seek(fd->sc_dk.dk_stats); 1139 disk_busy(&fd->sc_dk); 1140 1141 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1142 return 1; 1143 1144 case DOIO: 1145 doio: 1146 type = fd->sc_type; 1147 if (finfo) 1148 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1149 (char *)finfo; 1150 sec = fd->sc_blkno % type->seccyl; 1151 nblks = type->seccyl - sec; 1152 nblks = uimin(nblks, fd->sc_bcount / FDC_BSIZE); 1153 nblks = uimin(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1154 fd->sc_nblks = nblks; 1155 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1156 head = sec / type->sectrac; 1157 sec -= head * type->sectrac; 1158 #ifdef DIAGNOSTIC 1159 { 1160 int block; 1161 block = (fd->sc_cylin * type->heads + head) 1162 * type->sectrac + sec; 1163 if (block != fd->sc_blkno) { 1164 printf("fdcintr: block %d != blkno " 1165 "%" PRId64 "\n", block, fd->sc_blkno); 1166 #ifdef DDB 1167 Debugger(); 1168 #endif 1169 } 1170 } 1171 #endif 1172 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1173 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1174 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1175 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1176 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1177 #ifdef FD_DEBUG 1178 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1179 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1180 head, sec, nblks); 1181 #endif 1182 if (finfo) { 1183 /* formatting */ 1184 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1185 fdc->sc_errors = 4; 1186 fdcretry(fdc); 1187 goto loop; 1188 } 1189 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1190 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1191 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1192 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1193 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1194 } else { 1195 if (read) 1196 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1197 else 1198 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1199 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1200 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1201 out_fdc(iot, ioh, head); 1202 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1203 out_fdc(iot, ioh, type->secsize);/* sector size */ 1204 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1205 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1206 out_fdc(iot, ioh, type->datalen);/* data length */ 1207 } 1208 fdc->sc_state = IOCOMPLETE; 1209 1210 disk_busy(&fd->sc_dk); 1211 1212 /* allow 2 seconds for operation */ 1213 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1214 return 1; /* will return later */ 1215 1216 case SEEKWAIT: 1217 callout_stop(&fdc->sc_timo_ch); 1218 fdc->sc_state = SEEKCOMPLETE; 1219 /* allow 1/50 second for heads to settle */ 1220 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 1221 return 1; 1222 1223 case SEEKCOMPLETE: 1224 /* no data on seek */ 1225 disk_unbusy(&fd->sc_dk, 0, 0); 1226 1227 /* Make sure seek really happened. */ 1228 out_fdc(iot, ioh, NE7CMD_SENSEI); 1229 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1230 cyl != bp->b_cylinder * fd->sc_type->step) { 1231 #ifdef FD_DEBUG 1232 fdcstatus(fd->sc_dev, 2, "seek failed"); 1233 #endif 1234 fdcretry(fdc); 1235 goto loop; 1236 } 1237 fd->sc_cylin = bp->b_cylinder; 1238 goto doio; 1239 1240 case IOTIMEDOUT: 1241 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1242 /* FALLTHROUGH */ 1243 case SEEKTIMEDOUT: 1244 case RECALTIMEDOUT: 1245 case RESETTIMEDOUT: 1246 fdcretry(fdc); 1247 goto loop; 1248 1249 case IOCOMPLETE: /* IO DONE, post-analyze */ 1250 callout_stop(&fdc->sc_timo_ch); 1251 1252 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1253 (bp->b_flags & B_READ)); 1254 1255 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1256 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1257 #ifdef FD_DEBUG 1258 fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? 1259 "read failed" : "write failed"); 1260 printf("blkno %llu nblks %d\n", 1261 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1262 #endif 1263 fdcretry(fdc); 1264 goto loop; 1265 } 1266 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1267 if (fdc->sc_errors) { 1268 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1269 fd->sc_skip / FDC_BSIZE, NULL); 1270 printf("\n"); 1271 fdc->sc_errors = 0; 1272 } 1273 fd->sc_blkno += fd->sc_nblks; 1274 fd->sc_skip += fd->sc_nbytes; 1275 fd->sc_bcount -= fd->sc_nbytes; 1276 if (!finfo && fd->sc_bcount > 0) { 1277 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1278 goto doseek; 1279 } 1280 fdfinish(fd, bp); 1281 goto loop; 1282 1283 case DORESET: 1284 /* try a reset, keep motor on */ 1285 fd_set_motor(fdc, 1); 1286 delay(100); 1287 fd_set_motor(fdc, 0); 1288 fdc->sc_state = RESETCOMPLETE; 1289 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1290 return 1; /* will return later */ 1291 1292 case RESETCOMPLETE: 1293 callout_stop(&fdc->sc_timo_ch); 1294 /* clear the controller output buffer */ 1295 for (i = 0; i < 4; i++) { 1296 out_fdc(iot, ioh, NE7CMD_SENSEI); 1297 (void) fdcresult(fdc); 1298 } 1299 1300 /* fall through */ 1301 case DORECAL: 1302 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1303 out_fdc(iot, ioh, fd->sc_drive); 1304 fdc->sc_state = RECALWAIT; 1305 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1306 return 1; /* will return later */ 1307 1308 case RECALWAIT: 1309 callout_stop(&fdc->sc_timo_ch); 1310 fdc->sc_state = RECALCOMPLETE; 1311 /* allow 1/30 second for heads to settle */ 1312 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 1313 return 1; /* will return later */ 1314 1315 case RECALCOMPLETE: 1316 out_fdc(iot, ioh, NE7CMD_SENSEI); 1317 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1318 #ifdef FD_DEBUG 1319 fdcstatus(fd->sc_dev, 2, "recalibrate failed"); 1320 #endif 1321 fdcretry(fdc); 1322 goto loop; 1323 } 1324 fd->sc_cylin = 0; 1325 goto doseek; 1326 1327 case MOTORWAIT: 1328 if (fd->sc_flags & FD_MOTOR_WAIT) 1329 return 1; /* time's not up yet */ 1330 goto doseek; 1331 1332 default: 1333 fdcstatus(fd->sc_dev, 0, "stray interrupt"); 1334 return 1; 1335 } 1336 #undef st0 1337 #undef cyl 1338 1339 out: 1340 cv_signal(&fdc->sc_cv); 1341 return 1; 1342 } 1343 1344 static void 1345 fdcintrcb(void *arg) 1346 { 1347 (void)fdcintr(arg); 1348 } 1349 1350 int 1351 fdcintr(void *arg) 1352 { 1353 int rc; 1354 struct fdc_softc *fdc = arg; 1355 1356 mutex_enter(&fdc->sc_mtx); 1357 rc = fdcintr1(fdc); 1358 mutex_exit(&fdc->sc_mtx); 1359 return rc; 1360 } 1361 1362 void 1363 fdcretry(struct fdc_softc *fdc) 1364 { 1365 struct fd_softc *fd; 1366 struct buf *bp; 1367 1368 fd = TAILQ_FIRST(&fdc->sc_drives); 1369 bp = bufq_peek(fd->sc_q); 1370 1371 if (fd->sc_opts & FDOPT_NORETRY) 1372 goto fail; 1373 switch (fdc->sc_errors) { 1374 case 0: 1375 /* try again */ 1376 fdc->sc_state = DOSEEK; 1377 break; 1378 1379 case 1: case 2: case 3: 1380 /* didn't work; try recalibrating */ 1381 fdc->sc_state = DORECAL; 1382 break; 1383 1384 case 4: 1385 /* still no go; reset the bastard */ 1386 fdc->sc_state = DORESET; 1387 break; 1388 1389 default: 1390 fail: 1391 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1392 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1393 fd->sc_skip / FDC_BSIZE, NULL); 1394 fdcpstatus(7, fdc); 1395 } 1396 1397 bp->b_error = EIO; 1398 fdfinish(fd, bp); 1399 } 1400 fdc->sc_errors++; 1401 } 1402 1403 int 1404 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1405 { 1406 struct fd_softc *fd = 1407 device_lookup_private(&fd_cd, FDUNIT(dev)); 1408 struct fdformat_parms *form_parms; 1409 struct fdformat_cmd *form_cmd; 1410 struct ne7_fd_formb *fd_formb; 1411 struct disklabel *lp = fd->sc_dk.dk_label; 1412 int error; 1413 unsigned int scratch; 1414 int il[FD_MAX_NSEC + 1]; 1415 int i, j; 1416 #ifdef __HAVE_OLD_DISKLABEL 1417 struct disklabel newlabel; 1418 #endif 1419 1420 switch (cmd) { 1421 case DIOCGPARTINFO: 1422 case DIOCGDINFO: 1423 #ifdef __HAVE_OLD_DISKLABEL 1424 case ODIOCGDINFO: 1425 #endif 1426 memset(lp, 0, sizeof(*lp)); 1427 1428 lp->d_type = DKTYPE_FLOPPY; 1429 lp->d_secsize = FDC_BSIZE; 1430 lp->d_nsectors = fd->sc_type->sectrac; 1431 lp->d_ntracks = fd->sc_type->heads; 1432 lp->d_ncylinders = fd->sc_type->cyls; 1433 lp->d_secpercyl = fd->sc_type->seccyl; 1434 lp->d_secperunit = fd->sc_type->size; 1435 1436 if (readdisklabel(dev, fdstrategy, lp, NULL) != NULL) 1437 return EINVAL; 1438 break; 1439 } 1440 1441 error = disk_ioctl(&fd->sc_dk, dev, cmd, addr, flag, l); 1442 if (error != EPASSTHROUGH) 1443 return error; 1444 1445 switch (cmd) { 1446 case DIOCWLABEL: 1447 if ((flag & FWRITE) == 0) 1448 return EBADF; 1449 /* XXX do something */ 1450 return 0; 1451 1452 case DIOCWDINFO: 1453 #ifdef __HAVE_OLD_DISKLABEL 1454 case ODIOCWDINFO: 1455 #endif 1456 { 1457 if ((flag & FWRITE) == 0) 1458 return EBADF; 1459 #ifdef __HAVE_OLD_DISKLABEL 1460 if (cmd == ODIOCWDINFO) { 1461 memset(&newlabel, 0, sizeof newlabel); 1462 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1463 addr = &newlabel; 1464 } 1465 #endif 1466 error = setdisklabel(lp, addr, 0, NULL); 1467 if (error) 1468 return error; 1469 1470 error = writedisklabel(dev, fdstrategy, lp, 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_WAITOK); 1560 fd_formb->head = form_cmd->head; 1561 fd_formb->cyl = form_cmd->cylinder; 1562 fd_formb->transfer_rate = fd->sc_type->rate; 1563 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1564 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1565 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1566 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1567 1568 memset(il, 0, sizeof il); 1569 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1570 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1571 j++; 1572 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1573 j += fd->sc_type->interleave; 1574 } 1575 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1576 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1577 fd_formb->fd_formb_headno(i) = form_cmd->head; 1578 fd_formb->fd_formb_secno(i) = il[i+1]; 1579 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1580 } 1581 1582 error = fdformat(dev, fd_formb, l); 1583 free(fd_formb, M_TEMP); 1584 return error; 1585 1586 case FDIOCGETOPTS: /* get drive options */ 1587 *(int *)addr = fd->sc_opts; 1588 return 0; 1589 1590 case FDIOCSETOPTS: /* set drive options */ 1591 fd->sc_opts = *(int *)addr; 1592 return 0; 1593 1594 default: 1595 return ENOTTY; 1596 } 1597 1598 #ifdef DIAGNOSTIC 1599 panic("fdioctl: impossible"); 1600 #endif 1601 } 1602 1603 int 1604 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1605 { 1606 int rv = 0; 1607 struct fd_softc *fd = 1608 device_lookup_private(&fd_cd, FDUNIT(dev)); 1609 struct fd_type *type = fd->sc_type; 1610 struct buf *bp; 1611 1612 /* set up a buffer header for fdstrategy() */ 1613 bp = getiobuf(NULL, false); 1614 if (bp == NULL) 1615 return ENOBUFS; 1616 1617 bp->b_cflags = BC_BUSY; 1618 bp->b_flags = B_PHYS | B_FORMAT; 1619 bp->b_proc = l->l_proc; 1620 bp->b_dev = dev; 1621 1622 /* 1623 * calculate a fake blkno, so fdstrategy() would initiate a 1624 * seek to the requested cylinder 1625 */ 1626 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1627 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1628 1629 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1630 bp->b_data = (void *)finfo; 1631 1632 #ifdef FD_DEBUG 1633 printf("fdformat: blkno %" PRIx64 " count %x\n", 1634 bp->b_blkno, bp->b_bcount); 1635 #endif 1636 1637 /* now do the format */ 1638 fdstrategy(bp); 1639 1640 /* ...and wait for it to complete */ 1641 rv = biowait(bp); 1642 putiobuf(bp); 1643 return rv; 1644 } 1645 1646 /* 1647 * Mountroot hook: prompt the user to enter the root file system 1648 * floppy. 1649 */ 1650 void 1651 fd_mountroot_hook(device_t dev) 1652 { 1653 int c; 1654 1655 printf("Insert filesystem floppy and press return."); 1656 cnpollc(1); 1657 for (;;) { 1658 c = cngetc(); 1659 if ((c == '\r') || (c == '\n')) { 1660 printf("\n"); 1661 break; 1662 } 1663 } 1664 cnpollc(0); 1665 } 1666 1667 static void 1668 fd_set_geometry(struct fd_softc *fd) 1669 { 1670 const struct fd_type *fdt; 1671 1672 fdt = fd->sc_type; 1673 if (fdt == NULL) { 1674 fdt = fd->sc_deftype; 1675 if (fdt == NULL) 1676 return; 1677 } 1678 1679 struct disk_geom *dg = &fd->sc_dk.dk_geom; 1680 1681 memset(dg, 0, sizeof(*dg)); 1682 dg->dg_secperunit = fdt->size; 1683 dg->dg_nsectors = fdt->sectrac; 1684 switch (fdt->secsize) { 1685 case 2: 1686 dg->dg_secsize = 512; 1687 break; 1688 case 3: 1689 dg->dg_secsize = 1024; 1690 break; 1691 default: 1692 break; 1693 } 1694 dg->dg_ntracks = fdt->heads; 1695 dg->dg_ncylinders = fdt->cyls; 1696 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 1697 } 1698