1 /* $NetBSD: fd.c,v 1.114 2019/11/10 21:16:35 chs 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 1.114 2019/11/10 21:16:35 chs Exp $"); 85 86 #include "opt_ddb.h" 87 88 /* 89 * XXX This driver should be properly MI'd some day, but this allows us 90 * XXX to eliminate a lot of code duplication for now. 91 */ 92 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 93 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 94 !defined(prep) && !defined(sandpoint) && !defined(x86_64) && \ 95 !defined(mvmeppc) && !defined(ofppc) 96 #error platform not supported by this driver, yet 97 #endif 98 99 #include <sys/param.h> 100 #include <sys/systm.h> 101 #include <sys/callout.h> 102 #include <sys/kernel.h> 103 #include <sys/file.h> 104 #include <sys/ioctl.h> 105 #include <sys/device.h> 106 #include <sys/disklabel.h> 107 #include <sys/disk.h> 108 #include <sys/buf.h> 109 #include <sys/bufq.h> 110 #include <sys/malloc.h> 111 #include <sys/uio.h> 112 #include <sys/syslog.h> 113 #include <sys/queue.h> 114 #include <sys/proc.h> 115 #include <sys/fdio.h> 116 #include <sys/conf.h> 117 #include <sys/vnode.h> 118 #include <sys/rndsource.h> 119 120 #include <prop/proplib.h> 121 122 #include <dev/cons.h> 123 124 #include <sys/cpu.h> 125 #include <sys/bus.h> 126 127 #include "locators.h" 128 129 #if defined(atari) 130 /* 131 * On the atari, it is configured as fdcisa 132 */ 133 #define FDCCF_DRIVE FDCISACF_DRIVE 134 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 135 136 #define fd_cd fdisa_cd 137 #endif /* atari */ 138 139 #include <sys/intr.h> 140 141 #include <dev/isa/isavar.h> 142 #include <dev/isa/isadmavar.h> 143 144 #include <dev/isa/fdreg.h> 145 #include <dev/isa/fdcvar.h> 146 147 #if defined(i386) || defined(x86_64) 148 149 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 150 #include <i386/isa/nvram.h> 151 152 #if defined(i386) 153 #include "mca.h" 154 #if NMCA > 0 155 #include <machine/mca_machdep.h> /* for MCA_system */ 156 #endif 157 #endif 158 159 #endif /* i386 || x86_64 */ 160 161 #include <dev/isa/fdvar.h> 162 163 #define FDUNIT(dev) (minor(dev) / 8) 164 #define FDTYPE(dev) (minor(dev) % 8) 165 166 /* (mis)use device use flag to identify format operation */ 167 #define B_FORMAT B_DEVPRIVATE 168 169 /* controller driver configuration */ 170 int fdprint(void *, const char *); 171 172 #if NMCA > 0 173 /* MCA - specific entries */ 174 const struct fd_type mca_fd_types[] = { 175 { 18,2,36,2,0xff,0x0f,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette - XXX try 16ms step rate */ 176 { 9,2,18,2,0xff,0x4f,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette - XXX try 24ms step rate */ 177 }; 178 #endif /* NMCA > 0 */ 179 180 /* The order of entries in the following table is important -- BEWARE! */ 181 182 #if defined(atari) 183 const struct fd_type fd_types[] = { 184 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 185 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 186 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 187 }; 188 #else 189 const struct fd_type fd_types[] = { 190 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 191 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 192 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 193 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 194 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 195 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 196 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 197 }; 198 #endif /* defined(atari) */ 199 200 void fdcfinishattach(device_t); 201 int fdprobe(device_t, cfdata_t, void *); 202 void fdattach(device_t, device_t, void *); 203 static int fddetach(device_t, int); 204 static int fdcintr1(struct fdc_softc *); 205 static void fdcintrcb(void *); 206 static bool fdcsuspend(device_t, const pmf_qual_t *); 207 static bool fdcresume(device_t, const pmf_qual_t *); 208 209 extern struct cfdriver fd_cd; 210 211 #ifdef atari 212 CFATTACH_DECL_NEW(fdisa, sizeof(struct fd_softc), 213 fdprobe, fdattach, fddetach, NULL); 214 #else 215 CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), 216 fdprobe, fdattach, fddetach, NULL); 217 #endif 218 219 dev_type_open(fdopen); 220 dev_type_close(fdclose); 221 dev_type_read(fdread); 222 dev_type_write(fdwrite); 223 dev_type_ioctl(fdioctl); 224 dev_type_strategy(fdstrategy); 225 226 const struct bdevsw fd_bdevsw = { 227 .d_open = fdopen, 228 .d_close = fdclose, 229 .d_strategy = fdstrategy, 230 .d_ioctl = fdioctl, 231 .d_dump = nodump, 232 .d_psize = nosize, 233 .d_discard = nodiscard, 234 .d_flag = D_DISK 235 }; 236 237 const struct cdevsw fd_cdevsw = { 238 .d_open = fdopen, 239 .d_close = fdclose, 240 .d_read = fdread, 241 .d_write = fdwrite, 242 .d_ioctl = fdioctl, 243 .d_stop = nostop, 244 .d_tty = notty, 245 .d_poll = nopoll, 246 .d_mmap = nommap, 247 .d_kqfilter = nokqfilter, 248 .d_discard = nodiscard, 249 .d_flag = D_DISK 250 }; 251 252 void fdgetdisklabel(struct fd_softc *); 253 int fd_get_parms(struct fd_softc *); 254 void fdstart(struct fd_softc *); 255 256 struct dkdriver fddkdriver = { 257 .d_strategy = fdstrategy, 258 .d_minphys = minphys 259 }; 260 261 #if defined(i386) || defined(x86_64) 262 const struct fd_type *fd_nvtotype(const char *, int, int); 263 #endif /* i386 || x86_64 */ 264 void fd_set_motor(struct fdc_softc *fdc, int reset); 265 void fd_motor_off(void *arg); 266 void fd_motor_on(void *arg); 267 int fdcresult(struct fdc_softc *fdc); 268 void fdcstart(struct fdc_softc *fdc); 269 void fdcstatus(device_t, int, const char *); 270 void fdctimeout(void *arg); 271 void fdcretry(struct fdc_softc *fdc); 272 void fdfinish(struct fd_softc *fd, struct buf *bp); 273 static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 274 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 275 static void fd_set_geometry(struct fd_softc *fd); 276 277 void fd_mountroot_hook(device_t); 278 279 /* 280 * Arguments passed between fdcattach and fdprobe. 281 */ 282 struct fdc_attach_args { 283 int fa_drive; 284 const struct fd_type *fa_deftype; 285 }; 286 287 /* 288 * Print the location of a disk drive (called just before attaching the 289 * the drive). If `fdc' is not NULL, the drive was found but was not 290 * in the system config file; print the drive name as well. 291 * Return QUIET (config_find ignores this if the device was configured) to 292 * avoid printing `fdN not configured' messages. 293 */ 294 int 295 fdprint(void *aux, const char *fdc) 296 { 297 struct fdc_attach_args *fa = aux; 298 299 if (!fdc) 300 aprint_normal(" drive %d", fa->fa_drive); 301 return QUIET; 302 } 303 304 static bool 305 fdcresume(device_t self, const pmf_qual_t *qual) 306 { 307 struct fdc_softc *fdc = device_private(self); 308 309 mutex_enter(&fdc->sc_mtx); 310 (void)fdcintr1(fdc); 311 mutex_exit(&fdc->sc_mtx); 312 return true; 313 } 314 315 static bool 316 fdcsuspend(device_t self, const pmf_qual_t *qual) 317 { 318 struct fdc_softc *fdc = device_private(self); 319 int drive; 320 struct fd_softc *fd; 321 322 mutex_enter(&fdc->sc_mtx); 323 while (fdc->sc_state != DEVIDLE) 324 cv_wait(&fdc->sc_cv, &fdc->sc_mtx); 325 for (drive = 0; drive < 4; drive++) { 326 if ((fd = fdc->sc_fd[drive]) == NULL) 327 continue; 328 fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); 329 } 330 fd_set_motor(fdc, 0); 331 mutex_exit(&fdc->sc_mtx); 332 return true; 333 } 334 335 void 336 fdc_childdet(device_t self, device_t child) 337 { 338 struct fdc_softc *fdc = device_private(self); 339 struct fd_softc *fd = device_private(child); 340 int drive = fd->sc_drive; 341 342 KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ 343 fdc->sc_fd[drive] = NULL; 344 } 345 346 int 347 fdcdetach(device_t self, int flags) 348 { 349 int rc; 350 struct fdc_softc *fdc = device_private(self); 351 352 if ((rc = config_detach_children(self, flags)) != 0) 353 return rc; 354 355 pmf_device_deregister(self); 356 357 isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); 358 isa_drq_free(fdc->sc_ic, fdc->sc_drq); 359 360 callout_destroy(&fdc->sc_intr_ch); 361 callout_destroy(&fdc->sc_timo_ch); 362 363 cv_destroy(&fdc->sc_cv); 364 mutex_destroy(&fdc->sc_mtx); 365 366 return 0; 367 } 368 369 void 370 fdcattach(struct fdc_softc *fdc) 371 { 372 mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); 373 cv_init(&fdc->sc_cv, "fdcwake"); 374 callout_init(&fdc->sc_timo_ch, 0); 375 callout_init(&fdc->sc_intr_ch, 0); 376 377 fdc->sc_state = DEVIDLE; 378 TAILQ_INIT(&fdc->sc_drives); 379 380 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 381 382 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 383 aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", 384 fdc->sc_drq); 385 return; 386 } 387 388 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 389 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 390 aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); 391 return; 392 } 393 394 config_interrupts(fdc->sc_dev, fdcfinishattach); 395 396 if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { 397 aprint_error_dev(fdc->sc_dev, 398 "cannot set power mgmt handler\n"); 399 } 400 } 401 402 void 403 fdcfinishattach(device_t self) 404 { 405 struct fdc_softc *fdc = device_private(self); 406 bus_space_tag_t iot = fdc->sc_iot; 407 bus_space_handle_t ioh = fdc->sc_ioh; 408 struct fdc_attach_args fa; 409 410 /* 411 * Reset the controller to get it into a known state. Not all 412 * probes necessarily need do this to discover the controller up 413 * front, so don't assume anything. 414 */ 415 416 bus_space_write_1(iot, ioh, fdout, 0); 417 delay(100); 418 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 419 420 /* see if it can handle a command */ 421 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 422 aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); 423 return; 424 } 425 out_fdc(iot, ioh, 0xdf); 426 out_fdc(iot, ioh, 2); 427 428 #if defined(i386) || defined(x86_64) 429 /* 430 * The NVRAM info only tells us about the first two disks on the 431 * `primary' floppy controller. 432 */ 433 /* XXX device_unit() abuse */ 434 if (device_unit(fdc->sc_dev) == 0) { 435 int type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 436 fdc->sc_known = 1; 437 fdc->sc_knownfds[0] = fd_nvtotype(device_xname(fdc->sc_dev), 438 type, 0); 439 if (fdc->sc_knownfds[0] != NULL) 440 fdc->sc_present |= 1; 441 fdc->sc_knownfds[1] = fd_nvtotype(device_xname(fdc->sc_dev), 442 type, 1); 443 if (fdc->sc_knownfds[1] != NULL) 444 fdc->sc_present |= 2; 445 } 446 #endif /* i386 || x86_64 */ 447 448 /* physical limit: four drives per controller. */ 449 fdc->sc_state = PROBING; 450 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 451 if (fdc->sc_known) { 452 if (fdc->sc_present & (1 << fa.fa_drive)) { 453 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 454 config_found(fdc->sc_dev, (void *)&fa, 455 fdprint); 456 } 457 } else { 458 #if defined(atari) 459 /* 460 * Atari has a different ordening, defaults to 1.44 461 */ 462 fa.fa_deftype = &fd_types[2]; 463 /* Atari also configures ISA fdc(4) as "fdcisa" */ 464 (void)config_found_ia(fdc->sc_dev, "fdcisa", (void *)&fa, fdprint); 465 #else 466 /* 467 * Default to 1.44MB on Alpha and BeBox. How do we tell 468 * on these platforms? 469 */ 470 fa.fa_deftype = &fd_types[0]; 471 (void)config_found_ia(fdc->sc_dev, "fdc", (void *)&fa, fdprint); 472 #endif 473 } 474 } 475 fdc->sc_state = DEVIDLE; 476 } 477 478 int 479 fdprobe(device_t parent, cfdata_t match, void *aux) 480 { 481 struct fdc_softc *fdc = device_private(parent); 482 cfdata_t cf = match; 483 struct fdc_attach_args *fa = aux; 484 int drive = fa->fa_drive; 485 bus_space_tag_t iot = fdc->sc_iot; 486 bus_space_handle_t ioh = fdc->sc_ioh; 487 int n; 488 489 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 490 cf->cf_loc[FDCCF_DRIVE] != drive) 491 return 0; 492 /* 493 * XXX 494 * This is to work around some odd interactions between this driver 495 * and SMC Ethernet cards. 496 */ 497 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 498 return 0; 499 500 /* Use PNP information if available */ 501 if (fdc->sc_known) 502 return 1; 503 504 mutex_enter(&fdc->sc_mtx); 505 /* toss any interrupt status */ 506 for (n = 0; n < 4; n++) { 507 out_fdc(iot, ioh, NE7CMD_SENSEI); 508 (void) fdcresult(fdc); 509 } 510 /* select drive and turn on motor */ 511 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 512 /* wait for motor to spin up */ 513 /* XXX check sc_probe */ 514 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 515 out_fdc(iot, ioh, NE7CMD_RECAL); 516 out_fdc(iot, ioh, drive); 517 /* wait for recalibrate, up to 2s */ 518 /* XXX check sc_probe */ 519 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 520 #ifdef FD_DEBUG 521 /* XXX */ 522 printf("fdprobe: got intr\n"); 523 #endif 524 } 525 out_fdc(iot, ioh, NE7CMD_SENSEI); 526 n = fdcresult(fdc); 527 #ifdef FD_DEBUG 528 { 529 int i; 530 printf("fdprobe: status"); 531 for (i = 0; i < n; i++) 532 printf(" %x", fdc->sc_status[i]); 533 printf("\n"); 534 } 535 #endif 536 /* turn off motor */ 537 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 538 mutex_exit(&fdc->sc_mtx); 539 540 #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ 541 if (n != 2 || (fdc->sc_status[1] != 0)) 542 return 0; 543 #else 544 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 545 return 0; 546 #endif /* bebox */ 547 548 return 1; 549 } 550 551 /* 552 * Controller is working, and drive responded. Attach it. 553 */ 554 void 555 fdattach(device_t parent, device_t self, void *aux) 556 { 557 struct fdc_softc *fdc = device_private(parent); 558 struct fd_softc *fd = device_private(self); 559 struct fdc_attach_args *fa = aux; 560 const struct fd_type *type = fa->fa_deftype; 561 int drive = fa->fa_drive; 562 563 fd->sc_dev = self; 564 565 callout_init(&fd->sc_motoron_ch, 0); 566 callout_init(&fd->sc_motoroff_ch, 0); 567 568 /* XXX Allow `flags' to override device type? */ 569 570 if (type) 571 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 572 type->cyls, type->heads, type->sectrac); 573 else 574 aprint_normal(": density unknown\n"); 575 576 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 577 fd->sc_cylin = -1; 578 fd->sc_drive = drive; 579 fd->sc_deftype = type; 580 fdc->sc_fd[drive] = fd; 581 582 /* 583 * Initialize and attach the disk structure. 584 */ 585 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 586 disk_attach(&fd->sc_dk); 587 588 /* 589 * Establish a mountroot hook. 590 */ 591 fd->sc_roothook = 592 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 593 594 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 595 RND_TYPE_DISK, RND_FLAG_DEFAULT); 596 597 fd_set_geometry(fd); 598 599 if (!pmf_device_register(self, NULL, NULL)) 600 aprint_error_dev(self, "cannot set power mgmt handler\n"); 601 } 602 603 static int 604 fddetach(device_t self, int flags) 605 { 606 struct fd_softc *fd = device_private(self); 607 int bmaj, cmaj, i, mn; 608 609 fd_motor_off(fd); 610 611 /* locate the major number */ 612 bmaj = bdevsw_lookup_major(&fd_bdevsw); 613 cmaj = cdevsw_lookup_major(&fd_cdevsw); 614 615 /* Nuke the vnodes for any open instances. */ 616 for (i = 0; i < MAXPARTITIONS; i++) { 617 mn = DISKMINOR(device_unit(self), i); 618 vdevgone(bmaj, mn, mn, VBLK); 619 vdevgone(cmaj, mn, mn, VCHR); 620 } 621 622 pmf_device_deregister(self); 623 624 #if 0 /* XXX need to undo at detach? */ 625 fd_set_geometry(fd); 626 #endif 627 628 rnd_detach_source(&fd->rnd_source); 629 630 disk_detach(&fd->sc_dk); 631 disk_destroy(&fd->sc_dk); 632 633 /* Kill off any queued buffers. */ 634 bufq_drain(fd->sc_q); 635 636 bufq_free(fd->sc_q); 637 638 callout_destroy(&fd->sc_motoroff_ch); 639 callout_destroy(&fd->sc_motoron_ch); 640 641 return 0; 642 } 643 644 #if defined(i386) || defined(x86_64) 645 /* 646 * Translate nvram type into internal data structure. Return NULL for 647 * none/unknown/unusable. 648 */ 649 const struct fd_type * 650 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 651 { 652 int type; 653 654 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 655 switch (type) { 656 case NVRAM_DISKETTE_NONE: 657 return NULL; 658 case NVRAM_DISKETTE_12M: 659 return &fd_types[1]; 660 case NVRAM_DISKETTE_TYPE5: 661 case NVRAM_DISKETTE_TYPE6: 662 /* XXX We really ought to handle 2.88MB format. */ 663 case NVRAM_DISKETTE_144M: 664 #if NMCA > 0 665 if (MCA_system) 666 return &mca_fd_types[0]; 667 else 668 #endif /* NMCA > 0 */ 669 return &fd_types[0]; 670 case NVRAM_DISKETTE_360K: 671 return &fd_types[3]; 672 case NVRAM_DISKETTE_720K: 673 #if NMCA > 0 674 if (MCA_system) 675 return &mca_fd_types[1]; 676 else 677 #endif /* NMCA > 0 */ 678 return &fd_types[4]; 679 default: 680 printf("%s: drive %d: unknown device type 0x%x\n", 681 fdc, drive, type); 682 return NULL; 683 } 684 } 685 #endif /* i386 || x86_64 */ 686 687 static const struct fd_type * 688 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 689 { 690 u_int type = FDTYPE(dev); 691 692 if (type > __arraycount(fd_types)) 693 return NULL; 694 return type ? &fd_types[type - 1] : fd->sc_deftype; 695 } 696 697 void 698 fdstrategy(struct buf *bp) 699 { 700 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 701 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 702 int sz; 703 704 /* Valid unit, controller, and request? */ 705 if (bp->b_blkno < 0 || 706 ((bp->b_bcount % FDC_BSIZE) != 0 && 707 (bp->b_flags & B_FORMAT) == 0)) { 708 bp->b_error = EINVAL; 709 goto done; 710 } 711 712 /* If it's a null transfer, return immediately. */ 713 if (bp->b_bcount == 0) 714 goto done; 715 716 sz = howmany(bp->b_bcount, FDC_BSIZE); 717 718 if (bp->b_blkno + sz > fd->sc_type->size) { 719 sz = fd->sc_type->size - bp->b_blkno; 720 if (sz == 0) { 721 /* If exactly at end of disk, return EOF. */ 722 goto done; 723 } 724 if (sz < 0) { 725 /* If past end of disk, return EINVAL. */ 726 bp->b_error = EINVAL; 727 goto done; 728 } 729 /* Otherwise, truncate request. */ 730 bp->b_bcount = sz << DEV_BSHIFT; 731 } 732 733 bp->b_rawblkno = bp->b_blkno; 734 bp->b_cylinder = 735 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 736 737 #ifdef FD_DEBUG 738 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 739 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 740 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 741 #endif 742 743 /* Queue transfer on drive, activate drive and controller if idle. */ 744 mutex_enter(&fdc->sc_mtx); 745 bufq_put(fd->sc_q, bp); 746 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 747 if (fd->sc_active == 0) 748 fdstart(fd); 749 #ifdef DIAGNOSTIC 750 else { 751 if (fdc->sc_state == DEVIDLE) { 752 printf("fdstrategy: controller inactive\n"); 753 fdcstart(fdc); 754 } 755 } 756 #endif 757 mutex_exit(&fdc->sc_mtx); 758 return; 759 760 done: 761 /* Toss transfer; we're done early. */ 762 bp->b_resid = bp->b_bcount; 763 biodone(bp); 764 } 765 766 void 767 fdstart(struct fd_softc *fd) 768 { 769 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 770 int active = !TAILQ_EMPTY(&fdc->sc_drives); 771 772 KASSERT(mutex_owned(&fdc->sc_mtx)); 773 /* Link into controller queue. */ 774 fd->sc_active = 1; 775 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 776 777 /* If controller not already active, start it. */ 778 if (!active) 779 fdcstart(fdc); 780 } 781 782 void 783 fdfinish(struct fd_softc *fd, struct buf *bp) 784 { 785 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 786 787 /* 788 * Move this drive to the end of the queue to give others a `fair' 789 * chance. We only force a switch if N operations are completed while 790 * another drive is waiting to be serviced, since there is a long motor 791 * startup delay whenever we switch. 792 */ 793 (void)bufq_get(fd->sc_q); 794 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 795 fd->sc_ops = 0; 796 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 797 if (bufq_peek(fd->sc_q) != NULL) 798 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 799 else 800 fd->sc_active = 0; 801 } 802 bp->b_resid = fd->sc_bcount; 803 fd->sc_skip = 0; 804 805 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 806 807 biodone(bp); 808 /* turn off motor 5s from now */ 809 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 810 fdc->sc_state = DEVIDLE; 811 } 812 813 int 814 fdread(dev_t dev, struct uio *uio, int flags) 815 { 816 817 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 818 } 819 820 int 821 fdwrite(dev_t dev, struct uio *uio, int flags) 822 { 823 824 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 825 } 826 827 void 828 fd_set_motor(struct fdc_softc *fdc, int reset) 829 { 830 struct fd_softc *fd; 831 u_char status; 832 int n; 833 834 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 835 status = fd->sc_drive; 836 else 837 status = 0; 838 if (!reset) 839 status |= FDO_FRST | FDO_FDMAEN; 840 for (n = 0; n < 4; n++) 841 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 842 status |= FDO_MOEN(n); 843 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 844 } 845 846 void 847 fd_motor_off(void *arg) 848 { 849 struct fd_softc *fd = arg; 850 struct fdc_softc *fdc; 851 852 fdc = device_private(device_parent(fd->sc_dev)); 853 854 mutex_enter(&fdc->sc_mtx); 855 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 856 fd_set_motor(fdc, 0); 857 mutex_exit(&fdc->sc_mtx); 858 } 859 860 void 861 fd_motor_on(void *arg) 862 { 863 struct fd_softc *fd = arg; 864 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 865 866 mutex_enter(&fdc->sc_mtx); 867 fd->sc_flags &= ~FD_MOTOR_WAIT; 868 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 869 (void)fdcintr1(fdc); 870 mutex_exit(&fdc->sc_mtx); 871 } 872 873 int 874 fdcresult(struct fdc_softc *fdc) 875 { 876 bus_space_tag_t iot = fdc->sc_iot; 877 bus_space_handle_t ioh = fdc->sc_ioh; 878 u_char i; 879 u_int j = 100000, 880 n = 0; 881 882 for (; j; j--) { 883 i = bus_space_read_1(iot, ioh, fdsts) & 884 (NE7_DIO | NE7_RQM | NE7_CB); 885 if (i == NE7_RQM) 886 return n; 887 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 888 if (n >= sizeof(fdc->sc_status)) { 889 log(LOG_ERR, "fdcresult: overrun\n"); 890 return -1; 891 } 892 fdc->sc_status[n++] = 893 bus_space_read_1(iot, ioh, fddata); 894 } 895 delay(10); 896 } 897 log(LOG_ERR, "fdcresult: timeout\n"); 898 return -1; 899 } 900 901 int 902 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 903 { 904 u_char i; 905 u_int j = 100000; 906 907 for (; j; j--) { 908 i = bus_space_read_1(iot, ioh, fdsts) & 909 (NE7_DIO | NE7_RQM); 910 if (i == NE7_RQM) { 911 bus_space_write_1(iot, ioh, fddata, x); 912 return 0; 913 } 914 delay(10); 915 } 916 return -1; 917 } 918 919 int 920 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 921 { 922 struct fd_softc *fd; 923 const struct fd_type *type; 924 925 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 926 if (fd == NULL) 927 return (ENXIO); 928 929 type = fd_dev_to_type(fd, dev); 930 if (type == NULL) 931 return ENXIO; 932 933 if ((fd->sc_flags & FD_OPEN) != 0 && 934 memcmp(fd->sc_type, type, sizeof(*type))) 935 return EBUSY; 936 937 fd->sc_type_copy = *type; 938 fd->sc_type = &fd->sc_type_copy; 939 fd->sc_cylin = -1; 940 fd->sc_flags |= FD_OPEN; 941 942 fd_set_geometry(fd); 943 944 return 0; 945 } 946 947 int 948 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 949 { 950 struct fd_softc *fd = 951 device_lookup_private(&fd_cd, FDUNIT(dev)); 952 953 fd->sc_flags &= ~FD_OPEN; 954 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 955 return 0; 956 } 957 958 void 959 fdcstart(struct fdc_softc *fdc) 960 { 961 962 KASSERT(mutex_owned(&fdc->sc_mtx)); 963 964 if (!device_is_active(fdc->sc_dev)) 965 return; 966 967 #ifdef DIAGNOSTIC 968 /* only got here if controller's drive queue was inactive; should 969 be in idle state */ 970 if (fdc->sc_state != DEVIDLE) { 971 printf("fdcstart: not idle\n"); 972 return; 973 } 974 #endif 975 (void)fdcintr1(fdc); 976 } 977 978 static void 979 fdcpstatus(int n, struct fdc_softc *fdc) 980 { 981 char bits[64]; 982 983 switch (n) { 984 case 0: 985 printf("\n"); 986 break; 987 case 2: 988 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 989 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 990 break; 991 case 7: 992 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 993 printf(" (st0 %s", bits); 994 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 995 printf(" st1 %s", bits); 996 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 997 printf(" st2 %s", bits); 998 printf(" cyl %d head %d sec %d)\n", 999 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1000 break; 1001 #ifdef DIAGNOSTIC 1002 default: 1003 printf("\nfdcstatus: weird size"); 1004 break; 1005 #endif 1006 } 1007 } 1008 1009 void 1010 fdcstatus(device_t dv, int n, const char *s) 1011 { 1012 struct fdc_softc *fdc = device_private(device_parent(dv)); 1013 1014 if (n == 0) { 1015 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 1016 (void) fdcresult(fdc); 1017 n = 2; 1018 } 1019 fdcpstatus(n, fdc); 1020 1021 aprint_normal_dev(dv, "%s", s); 1022 1023 } 1024 1025 void 1026 fdctimeout(void *arg) 1027 { 1028 struct fdc_softc *fdc = arg; 1029 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1030 1031 mutex_enter(&fdc->sc_mtx); 1032 #ifdef DEBUG 1033 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 1034 #endif 1035 fdcstatus(fd->sc_dev, 0, "timeout"); 1036 1037 if (bufq_peek(fd->sc_q) != NULL) 1038 fdc->sc_state++; 1039 else 1040 fdc->sc_state = DEVIDLE; 1041 1042 (void)fdcintr1(fdc); 1043 mutex_exit(&fdc->sc_mtx); 1044 } 1045 1046 static int 1047 fdcintr1(struct fdc_softc *fdc) 1048 { 1049 #define st0 fdc->sc_status[0] 1050 #define cyl fdc->sc_status[1] 1051 struct fd_softc *fd; 1052 struct buf *bp; 1053 bus_space_tag_t iot = fdc->sc_iot; 1054 bus_space_handle_t ioh = fdc->sc_ioh; 1055 int read, head, sec, i, nblks; 1056 struct fd_type *type; 1057 struct ne7_fd_formb *finfo = NULL; 1058 1059 KASSERT(mutex_owned(&fdc->sc_mtx)); 1060 if (fdc->sc_state == PROBING) { 1061 #ifdef DEBUG 1062 printf("fdcintr: got probe interrupt\n"); 1063 #endif 1064 fdc->sc_probe++; 1065 goto out; 1066 } 1067 1068 loop: 1069 /* Is there a drive for the controller to do a transfer with? */ 1070 fd = TAILQ_FIRST(&fdc->sc_drives); 1071 if (fd == NULL) { 1072 fdc->sc_state = DEVIDLE; 1073 goto out; 1074 } 1075 1076 /* Is there a transfer to this drive? If not, deactivate drive. */ 1077 bp = bufq_peek(fd->sc_q); 1078 if (bp == NULL) { 1079 fd->sc_ops = 0; 1080 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1081 fd->sc_active = 0; 1082 goto loop; 1083 } 1084 1085 if (bp->b_flags & B_FORMAT) 1086 finfo = (struct ne7_fd_formb *)bp->b_data; 1087 1088 switch (fdc->sc_state) { 1089 case DEVIDLE: 1090 fdc->sc_errors = 0; 1091 fd->sc_skip = 0; 1092 fd->sc_bcount = bp->b_bcount; 1093 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1094 callout_stop(&fd->sc_motoroff_ch); 1095 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1096 fdc->sc_state = MOTORWAIT; 1097 return 1; 1098 } 1099 if ((fd->sc_flags & FD_MOTOR) == 0) { 1100 /* Turn on the motor, being careful about pairing. */ 1101 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1102 if (ofd && ofd->sc_flags & FD_MOTOR) { 1103 callout_stop(&ofd->sc_motoroff_ch); 1104 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1105 } 1106 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1107 fd_set_motor(fdc, 0); 1108 fdc->sc_state = MOTORWAIT; 1109 /* Allow .25s for motor to stabilize. */ 1110 callout_reset(&fd->sc_motoron_ch, hz / 4, 1111 fd_motor_on, fd); 1112 return 1; 1113 } 1114 /* Make sure the right drive is selected. */ 1115 fd_set_motor(fdc, 0); 1116 1117 /* fall through */ 1118 case DOSEEK: 1119 doseek: 1120 if (fd->sc_cylin == bp->b_cylinder) 1121 goto doio; 1122 1123 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1124 out_fdc(iot, ioh, fd->sc_type->steprate); 1125 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1126 1127 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1128 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1129 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1130 1131 fd->sc_cylin = -1; 1132 fdc->sc_state = SEEKWAIT; 1133 1134 iostat_seek(fd->sc_dk.dk_stats); 1135 disk_busy(&fd->sc_dk); 1136 1137 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1138 return 1; 1139 1140 case DOIO: 1141 doio: 1142 type = fd->sc_type; 1143 if (finfo) 1144 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1145 (char *)finfo; 1146 sec = fd->sc_blkno % type->seccyl; 1147 nblks = type->seccyl - sec; 1148 nblks = uimin(nblks, fd->sc_bcount / FDC_BSIZE); 1149 nblks = uimin(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1150 fd->sc_nblks = nblks; 1151 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1152 head = sec / type->sectrac; 1153 sec -= head * type->sectrac; 1154 #ifdef DIAGNOSTIC 1155 { 1156 int block; 1157 block = (fd->sc_cylin * type->heads + head) 1158 * type->sectrac + sec; 1159 if (block != fd->sc_blkno) { 1160 printf("fdcintr: block %d != blkno " 1161 "%" PRId64 "\n", block, fd->sc_blkno); 1162 #ifdef DDB 1163 Debugger(); 1164 #endif 1165 } 1166 } 1167 #endif 1168 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1169 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1170 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1171 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1172 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1173 #ifdef FD_DEBUG 1174 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1175 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1176 head, sec, nblks); 1177 #endif 1178 if (finfo) { 1179 /* formatting */ 1180 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1181 fdc->sc_errors = 4; 1182 fdcretry(fdc); 1183 goto loop; 1184 } 1185 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1186 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1187 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1188 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1189 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1190 } else { 1191 if (read) 1192 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1193 else 1194 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1195 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1196 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1197 out_fdc(iot, ioh, head); 1198 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1199 out_fdc(iot, ioh, type->secsize);/* sector size */ 1200 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1201 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1202 out_fdc(iot, ioh, type->datalen);/* data length */ 1203 } 1204 fdc->sc_state = IOCOMPLETE; 1205 1206 disk_busy(&fd->sc_dk); 1207 1208 /* allow 2 seconds for operation */ 1209 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1210 return 1; /* will return later */ 1211 1212 case SEEKWAIT: 1213 callout_stop(&fdc->sc_timo_ch); 1214 fdc->sc_state = SEEKCOMPLETE; 1215 /* allow 1/50 second for heads to settle */ 1216 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 1217 return 1; 1218 1219 case SEEKCOMPLETE: 1220 /* no data on seek */ 1221 disk_unbusy(&fd->sc_dk, 0, 0); 1222 1223 /* Make sure seek really happened. */ 1224 out_fdc(iot, ioh, NE7CMD_SENSEI); 1225 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1226 cyl != bp->b_cylinder * fd->sc_type->step) { 1227 #ifdef FD_DEBUG 1228 fdcstatus(fd->sc_dev, 2, "seek failed"); 1229 #endif 1230 fdcretry(fdc); 1231 goto loop; 1232 } 1233 fd->sc_cylin = bp->b_cylinder; 1234 goto doio; 1235 1236 case IOTIMEDOUT: 1237 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1238 /* FALLTHROUGH */ 1239 case SEEKTIMEDOUT: 1240 case RECALTIMEDOUT: 1241 case RESETTIMEDOUT: 1242 fdcretry(fdc); 1243 goto loop; 1244 1245 case IOCOMPLETE: /* IO DONE, post-analyze */ 1246 callout_stop(&fdc->sc_timo_ch); 1247 1248 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1249 (bp->b_flags & B_READ)); 1250 1251 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1252 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1253 #ifdef FD_DEBUG 1254 fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? 1255 "read failed" : "write failed"); 1256 printf("blkno %llu nblks %d\n", 1257 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1258 #endif 1259 fdcretry(fdc); 1260 goto loop; 1261 } 1262 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1263 if (fdc->sc_errors) { 1264 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1265 fd->sc_skip / FDC_BSIZE, NULL); 1266 printf("\n"); 1267 fdc->sc_errors = 0; 1268 } 1269 fd->sc_blkno += fd->sc_nblks; 1270 fd->sc_skip += fd->sc_nbytes; 1271 fd->sc_bcount -= fd->sc_nbytes; 1272 if (!finfo && fd->sc_bcount > 0) { 1273 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1274 goto doseek; 1275 } 1276 fdfinish(fd, bp); 1277 goto loop; 1278 1279 case DORESET: 1280 /* try a reset, keep motor on */ 1281 fd_set_motor(fdc, 1); 1282 delay(100); 1283 fd_set_motor(fdc, 0); 1284 fdc->sc_state = RESETCOMPLETE; 1285 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1286 return 1; /* will return later */ 1287 1288 case RESETCOMPLETE: 1289 callout_stop(&fdc->sc_timo_ch); 1290 /* clear the controller output buffer */ 1291 for (i = 0; i < 4; i++) { 1292 out_fdc(iot, ioh, NE7CMD_SENSEI); 1293 (void) fdcresult(fdc); 1294 } 1295 1296 /* fall through */ 1297 case DORECAL: 1298 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1299 out_fdc(iot, ioh, fd->sc_drive); 1300 fdc->sc_state = RECALWAIT; 1301 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1302 return 1; /* will return later */ 1303 1304 case RECALWAIT: 1305 callout_stop(&fdc->sc_timo_ch); 1306 fdc->sc_state = RECALCOMPLETE; 1307 /* allow 1/30 second for heads to settle */ 1308 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 1309 return 1; /* will return later */ 1310 1311 case RECALCOMPLETE: 1312 out_fdc(iot, ioh, NE7CMD_SENSEI); 1313 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1314 #ifdef FD_DEBUG 1315 fdcstatus(fd->sc_dev, 2, "recalibrate failed"); 1316 #endif 1317 fdcretry(fdc); 1318 goto loop; 1319 } 1320 fd->sc_cylin = 0; 1321 goto doseek; 1322 1323 case MOTORWAIT: 1324 if (fd->sc_flags & FD_MOTOR_WAIT) 1325 return 1; /* time's not up yet */ 1326 goto doseek; 1327 1328 default: 1329 fdcstatus(fd->sc_dev, 0, "stray interrupt"); 1330 return 1; 1331 } 1332 #undef st0 1333 #undef cyl 1334 1335 out: 1336 cv_signal(&fdc->sc_cv); 1337 return 1; 1338 } 1339 1340 static void 1341 fdcintrcb(void *arg) 1342 { 1343 (void)fdcintr(arg); 1344 } 1345 1346 int 1347 fdcintr(void *arg) 1348 { 1349 int rc; 1350 struct fdc_softc *fdc = arg; 1351 1352 mutex_enter(&fdc->sc_mtx); 1353 rc = fdcintr1(fdc); 1354 mutex_exit(&fdc->sc_mtx); 1355 return rc; 1356 } 1357 1358 void 1359 fdcretry(struct fdc_softc *fdc) 1360 { 1361 struct fd_softc *fd; 1362 struct buf *bp; 1363 1364 fd = TAILQ_FIRST(&fdc->sc_drives); 1365 bp = bufq_peek(fd->sc_q); 1366 1367 if (fd->sc_opts & FDOPT_NORETRY) 1368 goto fail; 1369 switch (fdc->sc_errors) { 1370 case 0: 1371 /* try again */ 1372 fdc->sc_state = DOSEEK; 1373 break; 1374 1375 case 1: case 2: case 3: 1376 /* didn't work; try recalibrating */ 1377 fdc->sc_state = DORECAL; 1378 break; 1379 1380 case 4: 1381 /* still no go; reset the bastard */ 1382 fdc->sc_state = DORESET; 1383 break; 1384 1385 default: 1386 fail: 1387 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1388 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1389 fd->sc_skip / FDC_BSIZE, NULL); 1390 fdcpstatus(7, fdc); 1391 } 1392 1393 bp->b_error = EIO; 1394 fdfinish(fd, bp); 1395 } 1396 fdc->sc_errors++; 1397 } 1398 1399 int 1400 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1401 { 1402 struct fd_softc *fd = 1403 device_lookup_private(&fd_cd, FDUNIT(dev)); 1404 struct fdformat_parms *form_parms; 1405 struct fdformat_cmd *form_cmd; 1406 struct ne7_fd_formb *fd_formb; 1407 struct disklabel *lp = fd->sc_dk.dk_label; 1408 int error; 1409 unsigned int scratch; 1410 int il[FD_MAX_NSEC + 1]; 1411 int i, j; 1412 #ifdef __HAVE_OLD_DISKLABEL 1413 struct disklabel newlabel; 1414 #endif 1415 1416 switch (cmd) { 1417 case DIOCGPARTINFO: 1418 case DIOCGDINFO: 1419 #ifdef __HAVE_OLD_DISKLABEL 1420 case ODIOCGDINFO: 1421 #endif 1422 memset(lp, 0, sizeof(*lp)); 1423 1424 lp->d_type = DKTYPE_FLOPPY; 1425 lp->d_secsize = FDC_BSIZE; 1426 lp->d_nsectors = fd->sc_type->sectrac; 1427 lp->d_ntracks = fd->sc_type->heads; 1428 lp->d_ncylinders = fd->sc_type->cyls; 1429 lp->d_secpercyl = fd->sc_type->seccyl; 1430 lp->d_secperunit = fd->sc_type->size; 1431 1432 if (readdisklabel(dev, fdstrategy, lp, NULL) != NULL) 1433 return EINVAL; 1434 break; 1435 } 1436 1437 error = disk_ioctl(&fd->sc_dk, dev, cmd, addr, flag, l); 1438 if (error != EPASSTHROUGH) 1439 return error; 1440 1441 switch (cmd) { 1442 case DIOCWLABEL: 1443 if ((flag & FWRITE) == 0) 1444 return EBADF; 1445 /* XXX do something */ 1446 return 0; 1447 1448 case DIOCWDINFO: 1449 #ifdef __HAVE_OLD_DISKLABEL 1450 case ODIOCWDINFO: 1451 #endif 1452 { 1453 if ((flag & FWRITE) == 0) 1454 return EBADF; 1455 #ifdef __HAVE_OLD_DISKLABEL 1456 if (cmd == ODIOCWDINFO) { 1457 memset(&newlabel, 0, sizeof newlabel); 1458 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1459 addr = &newlabel; 1460 } 1461 #endif 1462 error = setdisklabel(lp, addr, 0, NULL); 1463 if (error) 1464 return error; 1465 1466 error = writedisklabel(dev, fdstrategy, lp, NULL); 1467 return error; 1468 } 1469 1470 case FDIOCGETFORMAT: 1471 form_parms = (struct fdformat_parms *)addr; 1472 form_parms->fdformat_version = FDFORMAT_VERSION; 1473 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1474 form_parms->ncyl = fd->sc_type->cyls; 1475 form_parms->nspt = fd->sc_type->sectrac; 1476 form_parms->ntrk = fd->sc_type->heads; 1477 form_parms->stepspercyl = fd->sc_type->step; 1478 form_parms->gaplen = fd->sc_type->gap2; 1479 form_parms->fillbyte = fd->sc_type->fillbyte; 1480 form_parms->interleave = fd->sc_type->interleave; 1481 switch (fd->sc_type->rate) { 1482 case FDC_500KBPS: 1483 form_parms->xfer_rate = 500 * 1024; 1484 break; 1485 case FDC_300KBPS: 1486 form_parms->xfer_rate = 300 * 1024; 1487 break; 1488 case FDC_250KBPS: 1489 form_parms->xfer_rate = 250 * 1024; 1490 break; 1491 default: 1492 return EINVAL; 1493 } 1494 return 0; 1495 1496 case FDIOCSETFORMAT: 1497 if((flag & FWRITE) == 0) 1498 return EBADF; /* must be opened for writing */ 1499 form_parms = (struct fdformat_parms *)addr; 1500 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1501 return EINVAL; /* wrong version of formatting prog */ 1502 1503 scratch = form_parms->nbps >> 7; 1504 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1505 scratch & ~(1 << (ffs(scratch)-1))) 1506 /* not a power-of-two multiple of 128 */ 1507 return EINVAL; 1508 1509 switch (form_parms->xfer_rate) { 1510 case 500 * 1024: 1511 fd->sc_type->rate = FDC_500KBPS; 1512 break; 1513 case 300 * 1024: 1514 fd->sc_type->rate = FDC_300KBPS; 1515 break; 1516 case 250 * 1024: 1517 fd->sc_type->rate = FDC_250KBPS; 1518 break; 1519 default: 1520 return EINVAL; 1521 } 1522 1523 if (form_parms->nspt > FD_MAX_NSEC || 1524 form_parms->fillbyte > 0xff || 1525 form_parms->interleave > 0xff) 1526 return EINVAL; 1527 fd->sc_type->sectrac = form_parms->nspt; 1528 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1529 return EINVAL; 1530 fd->sc_type->heads = form_parms->ntrk; 1531 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1532 fd->sc_type->secsize = ffs(scratch)-1; 1533 fd->sc_type->gap2 = form_parms->gaplen; 1534 fd->sc_type->cyls = form_parms->ncyl; 1535 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1536 form_parms->nbps / DEV_BSIZE; 1537 fd->sc_type->step = form_parms->stepspercyl; 1538 fd->sc_type->fillbyte = form_parms->fillbyte; 1539 fd->sc_type->interleave = form_parms->interleave; 1540 return 0; 1541 1542 case FDIOCFORMAT_TRACK: 1543 if((flag & FWRITE) == 0) 1544 return EBADF; /* must be opened for writing */ 1545 form_cmd = (struct fdformat_cmd *)addr; 1546 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1547 return EINVAL; /* wrong version of formatting prog */ 1548 1549 if (form_cmd->head >= fd->sc_type->heads || 1550 form_cmd->cylinder >= fd->sc_type->cyls) { 1551 return EINVAL; 1552 } 1553 1554 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1555 M_TEMP, M_WAITOK); 1556 fd_formb->head = form_cmd->head; 1557 fd_formb->cyl = form_cmd->cylinder; 1558 fd_formb->transfer_rate = fd->sc_type->rate; 1559 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1560 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1561 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1562 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1563 1564 memset(il, 0, sizeof il); 1565 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1566 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1567 j++; 1568 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1569 j += fd->sc_type->interleave; 1570 } 1571 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1572 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1573 fd_formb->fd_formb_headno(i) = form_cmd->head; 1574 fd_formb->fd_formb_secno(i) = il[i+1]; 1575 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1576 } 1577 1578 error = fdformat(dev, fd_formb, l); 1579 free(fd_formb, M_TEMP); 1580 return error; 1581 1582 case FDIOCGETOPTS: /* get drive options */ 1583 *(int *)addr = fd->sc_opts; 1584 return 0; 1585 1586 case FDIOCSETOPTS: /* set drive options */ 1587 fd->sc_opts = *(int *)addr; 1588 return 0; 1589 1590 default: 1591 return ENOTTY; 1592 } 1593 1594 #ifdef DIAGNOSTIC 1595 panic("fdioctl: impossible"); 1596 #endif 1597 } 1598 1599 int 1600 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1601 { 1602 int rv = 0; 1603 struct fd_softc *fd = 1604 device_lookup_private(&fd_cd, FDUNIT(dev)); 1605 struct fd_type *type = fd->sc_type; 1606 struct buf *bp; 1607 1608 /* set up a buffer header for fdstrategy() */ 1609 bp = getiobuf(NULL, false); 1610 if (bp == NULL) 1611 return ENOBUFS; 1612 1613 bp->b_cflags = BC_BUSY; 1614 bp->b_flags = B_PHYS | B_FORMAT; 1615 bp->b_proc = l->l_proc; 1616 bp->b_dev = dev; 1617 1618 /* 1619 * calculate a fake blkno, so fdstrategy() would initiate a 1620 * seek to the requested cylinder 1621 */ 1622 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1623 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1624 1625 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1626 bp->b_data = (void *)finfo; 1627 1628 #ifdef FD_DEBUG 1629 printf("fdformat: blkno %" PRIx64 " count %x\n", 1630 bp->b_blkno, bp->b_bcount); 1631 #endif 1632 1633 /* now do the format */ 1634 fdstrategy(bp); 1635 1636 /* ...and wait for it to complete */ 1637 rv = biowait(bp); 1638 putiobuf(bp); 1639 return rv; 1640 } 1641 1642 /* 1643 * Mountroot hook: prompt the user to enter the root file system 1644 * floppy. 1645 */ 1646 void 1647 fd_mountroot_hook(device_t dev) 1648 { 1649 int c; 1650 1651 printf("Insert filesystem floppy and press return."); 1652 cnpollc(1); 1653 for (;;) { 1654 c = cngetc(); 1655 if ((c == '\r') || (c == '\n')) { 1656 printf("\n"); 1657 break; 1658 } 1659 } 1660 cnpollc(0); 1661 } 1662 1663 static void 1664 fd_set_geometry(struct fd_softc *fd) 1665 { 1666 const struct fd_type *fdt; 1667 1668 fdt = fd->sc_type; 1669 if (fdt == NULL) { 1670 fdt = fd->sc_deftype; 1671 if (fdt == NULL) 1672 return; 1673 } 1674 1675 struct disk_geom *dg = &fd->sc_dk.dk_geom; 1676 1677 memset(dg, 0, sizeof(*dg)); 1678 dg->dg_secperunit = fdt->size; 1679 dg->dg_nsectors = fdt->sectrac; 1680 switch (fdt->secsize) { 1681 case 2: 1682 dg->dg_secsize = 512; 1683 break; 1684 case 3: 1685 dg->dg_secsize = 1024; 1686 break; 1687 default: 1688 break; 1689 } 1690 dg->dg_ntracks = fdt->heads; 1691 dg->dg_ncylinders = fdt->cyls; 1692 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 1693 } 1694