1 /* $NetBSD: fd.c,v 1.117 2022/09/25 17:11:48 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 (at) irbs.UUCP (John Capo) 75 * vak (at) zebub.msk.su (Serge Vakulenko) 76 * ache (at) astral.msk.su (Andrew A. Chernov) 77 * 78 * Copyright (c) 1993, 1994, 1995 by 79 * joerg_wunsch (at) uriah.sax.de (Joerg Wunsch) 80 * dufault (at) hda.com (Peter Dufault) 81 */ 82 83 #include <sys/cdefs.h> 84 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.117 2022/09/25 17:11:48 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/kmem.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, CFARGS_NONE); 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 CFARGS(.iattr = "fdcisa")); 466 #else 467 /* 468 * Default to 1.44MB on Alpha and BeBox. How do we tell 469 * on these platforms? 470 */ 471 fa.fa_deftype = &fd_types[0]; 472 config_found(fdc->sc_dev, &fa, fdprint, 473 CFARGS(.iattr = "fdc")); 474 #endif 475 } 476 } 477 fdc->sc_state = DEVIDLE; 478 } 479 480 int 481 fdprobe(device_t parent, cfdata_t match, void *aux) 482 { 483 struct fdc_softc *fdc = device_private(parent); 484 cfdata_t cf = match; 485 struct fdc_attach_args *fa = aux; 486 int drive = fa->fa_drive; 487 bus_space_tag_t iot = fdc->sc_iot; 488 bus_space_handle_t ioh = fdc->sc_ioh; 489 int n; 490 491 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 492 cf->cf_loc[FDCCF_DRIVE] != drive) 493 return 0; 494 /* 495 * XXX 496 * This is to work around some odd interactions between this driver 497 * and SMC Ethernet cards. 498 */ 499 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 500 return 0; 501 502 /* Use PNP information if available */ 503 if (fdc->sc_known) 504 return 1; 505 506 mutex_enter(&fdc->sc_mtx); 507 /* toss any interrupt status */ 508 for (n = 0; n < 4; n++) { 509 out_fdc(iot, ioh, NE7CMD_SENSEI); 510 (void) fdcresult(fdc); 511 } 512 /* select drive and turn on motor */ 513 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 514 /* wait for motor to spin up */ 515 /* XXX check sc_probe */ 516 (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); 517 out_fdc(iot, ioh, NE7CMD_RECAL); 518 out_fdc(iot, ioh, drive); 519 /* wait for recalibrate, up to 2s */ 520 /* XXX check sc_probe */ 521 if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ 522 #ifdef FD_DEBUG 523 /* XXX */ 524 printf("fdprobe: got intr\n"); 525 #endif 526 } 527 out_fdc(iot, ioh, NE7CMD_SENSEI); 528 n = fdcresult(fdc); 529 #ifdef FD_DEBUG 530 { 531 int i; 532 printf("fdprobe: status"); 533 for (i = 0; i < n; i++) 534 printf(" %x", fdc->sc_status[i]); 535 printf("\n"); 536 } 537 #endif 538 /* turn off motor */ 539 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 540 mutex_exit(&fdc->sc_mtx); 541 542 #if defined(bebox) /* XXX What is this about? --thorpej (at) NetBSD.org */ 543 if (n != 2 || (fdc->sc_status[1] != 0)) 544 return 0; 545 #else 546 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 547 return 0; 548 #endif /* bebox */ 549 550 return 1; 551 } 552 553 /* 554 * Controller is working, and drive responded. Attach it. 555 */ 556 void 557 fdattach(device_t parent, device_t self, void *aux) 558 { 559 struct fdc_softc *fdc = device_private(parent); 560 struct fd_softc *fd = device_private(self); 561 struct fdc_attach_args *fa = aux; 562 const struct fd_type *type = fa->fa_deftype; 563 int drive = fa->fa_drive; 564 565 fd->sc_dev = self; 566 567 callout_init(&fd->sc_motoron_ch, 0); 568 callout_init(&fd->sc_motoroff_ch, 0); 569 570 /* XXX Allow `flags' to override device type? */ 571 572 if (type) 573 aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, 574 type->cyls, type->heads, type->sectrac); 575 else 576 aprint_normal(": density unknown\n"); 577 578 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 579 fd->sc_cylin = -1; 580 fd->sc_drive = drive; 581 fd->sc_deftype = type; 582 fdc->sc_fd[drive] = fd; 583 584 /* 585 * Initialize and attach the disk structure. 586 */ 587 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 588 disk_attach(&fd->sc_dk); 589 590 /* 591 * Establish a mountroot hook. 592 */ 593 fd->sc_roothook = 594 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 595 596 rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), 597 RND_TYPE_DISK, RND_FLAG_DEFAULT); 598 599 fd_set_geometry(fd); 600 601 if (!pmf_device_register(self, NULL, NULL)) 602 aprint_error_dev(self, "cannot set power mgmt handler\n"); 603 } 604 605 static int 606 fddetach(device_t self, int flags) 607 { 608 struct fd_softc *fd = device_private(self); 609 int bmaj, cmaj, i, mn; 610 611 fd_motor_off(fd); 612 613 /* locate the major number */ 614 bmaj = bdevsw_lookup_major(&fd_bdevsw); 615 cmaj = cdevsw_lookup_major(&fd_cdevsw); 616 617 /* Nuke the vnodes for any open instances. */ 618 for (i = 0; i < MAXPARTITIONS; i++) { 619 mn = DISKMINOR(device_unit(self), i); 620 vdevgone(bmaj, mn, mn, VBLK); 621 vdevgone(cmaj, mn, mn, VCHR); 622 } 623 624 pmf_device_deregister(self); 625 626 #if 0 /* XXX need to undo at detach? */ 627 fd_set_geometry(fd); 628 #endif 629 630 rnd_detach_source(&fd->rnd_source); 631 632 disk_detach(&fd->sc_dk); 633 disk_destroy(&fd->sc_dk); 634 635 /* Kill off any queued buffers. */ 636 bufq_drain(fd->sc_q); 637 638 bufq_free(fd->sc_q); 639 640 callout_destroy(&fd->sc_motoroff_ch); 641 callout_destroy(&fd->sc_motoron_ch); 642 643 return 0; 644 } 645 646 #if defined(i386) || defined(x86_64) 647 /* 648 * Translate nvram type into internal data structure. Return NULL for 649 * none/unknown/unusable. 650 */ 651 const struct fd_type * 652 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 653 { 654 int type; 655 656 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 657 switch (type) { 658 case NVRAM_DISKETTE_NONE: 659 return NULL; 660 case NVRAM_DISKETTE_12M: 661 return &fd_types[1]; 662 case NVRAM_DISKETTE_TYPE5: 663 case NVRAM_DISKETTE_TYPE6: 664 /* XXX We really ought to handle 2.88MB format. */ 665 case NVRAM_DISKETTE_144M: 666 #if NMCA > 0 667 if (MCA_system) 668 return &mca_fd_types[0]; 669 else 670 #endif /* NMCA > 0 */ 671 return &fd_types[0]; 672 case NVRAM_DISKETTE_360K: 673 return &fd_types[3]; 674 case NVRAM_DISKETTE_720K: 675 #if NMCA > 0 676 if (MCA_system) 677 return &mca_fd_types[1]; 678 else 679 #endif /* NMCA > 0 */ 680 return &fd_types[4]; 681 default: 682 printf("%s: drive %d: unknown device type 0x%x\n", 683 fdc, drive, type); 684 return NULL; 685 } 686 } 687 #endif /* i386 || x86_64 */ 688 689 static const struct fd_type * 690 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 691 { 692 u_int type = FDTYPE(dev); 693 694 if (type > __arraycount(fd_types)) 695 return NULL; 696 return type ? &fd_types[type - 1] : fd->sc_deftype; 697 } 698 699 void 700 fdstrategy(struct buf *bp) 701 { 702 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 703 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 704 int sz; 705 706 /* Valid unit, controller, and request? */ 707 if (bp->b_blkno < 0 || 708 ((bp->b_bcount % FDC_BSIZE) != 0 && 709 (bp->b_flags & B_FORMAT) == 0)) { 710 bp->b_error = EINVAL; 711 goto done; 712 } 713 714 /* If it's a null transfer, return immediately. */ 715 if (bp->b_bcount == 0) 716 goto done; 717 718 sz = howmany(bp->b_bcount, FDC_BSIZE); 719 720 if (bp->b_blkno + sz > fd->sc_type->size) { 721 sz = fd->sc_type->size - bp->b_blkno; 722 if (sz == 0) { 723 /* If exactly at end of disk, return EOF. */ 724 goto done; 725 } 726 if (sz < 0) { 727 /* If past end of disk, return EINVAL. */ 728 bp->b_error = EINVAL; 729 goto done; 730 } 731 /* Otherwise, truncate request. */ 732 bp->b_bcount = sz << DEV_BSHIFT; 733 } 734 735 bp->b_rawblkno = bp->b_blkno; 736 bp->b_cylinder = 737 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 738 739 #ifdef FD_DEBUG 740 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 741 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 742 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 743 #endif 744 745 /* Queue transfer on drive, activate drive and controller if idle. */ 746 mutex_enter(&fdc->sc_mtx); 747 bufq_put(fd->sc_q, bp); 748 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 749 if (fd->sc_active == 0) 750 fdstart(fd); 751 #ifdef DIAGNOSTIC 752 else { 753 if (fdc->sc_state == DEVIDLE) { 754 printf("fdstrategy: controller inactive\n"); 755 fdcstart(fdc); 756 } 757 } 758 #endif 759 mutex_exit(&fdc->sc_mtx); 760 return; 761 762 done: 763 /* Toss transfer; we're done early. */ 764 bp->b_resid = bp->b_bcount; 765 biodone(bp); 766 } 767 768 void 769 fdstart(struct fd_softc *fd) 770 { 771 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 772 int active = !TAILQ_EMPTY(&fdc->sc_drives); 773 774 KASSERT(mutex_owned(&fdc->sc_mtx)); 775 /* Link into controller queue. */ 776 fd->sc_active = 1; 777 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 778 779 /* If controller not already active, start it. */ 780 if (!active) 781 fdcstart(fdc); 782 } 783 784 void 785 fdfinish(struct fd_softc *fd, struct buf *bp) 786 { 787 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 788 789 /* 790 * Move this drive to the end of the queue to give others a `fair' 791 * chance. We only force a switch if N operations are completed while 792 * another drive is waiting to be serviced, since there is a long motor 793 * startup delay whenever we switch. 794 */ 795 (void)bufq_get(fd->sc_q); 796 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 797 fd->sc_ops = 0; 798 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 799 if (bufq_peek(fd->sc_q) != NULL) 800 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 801 else 802 fd->sc_active = 0; 803 } 804 bp->b_resid = fd->sc_bcount; 805 fd->sc_skip = 0; 806 807 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 808 809 biodone(bp); 810 /* turn off motor 5s from now */ 811 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 812 fdc->sc_state = DEVIDLE; 813 } 814 815 int 816 fdread(dev_t dev, struct uio *uio, int flags) 817 { 818 819 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 820 } 821 822 int 823 fdwrite(dev_t dev, struct uio *uio, int flags) 824 { 825 826 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 827 } 828 829 void 830 fd_set_motor(struct fdc_softc *fdc, int reset) 831 { 832 struct fd_softc *fd; 833 u_char status; 834 int n; 835 836 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 837 status = fd->sc_drive; 838 else 839 status = 0; 840 if (!reset) 841 status |= FDO_FRST | FDO_FDMAEN; 842 for (n = 0; n < 4; n++) 843 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 844 status |= FDO_MOEN(n); 845 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 846 } 847 848 void 849 fd_motor_off(void *arg) 850 { 851 struct fd_softc *fd = arg; 852 struct fdc_softc *fdc; 853 854 fdc = device_private(device_parent(fd->sc_dev)); 855 856 mutex_enter(&fdc->sc_mtx); 857 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 858 fd_set_motor(fdc, 0); 859 mutex_exit(&fdc->sc_mtx); 860 } 861 862 void 863 fd_motor_on(void *arg) 864 { 865 struct fd_softc *fd = arg; 866 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 867 868 mutex_enter(&fdc->sc_mtx); 869 fd->sc_flags &= ~FD_MOTOR_WAIT; 870 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 871 (void)fdcintr1(fdc); 872 mutex_exit(&fdc->sc_mtx); 873 } 874 875 int 876 fdcresult(struct fdc_softc *fdc) 877 { 878 bus_space_tag_t iot = fdc->sc_iot; 879 bus_space_handle_t ioh = fdc->sc_ioh; 880 u_char i; 881 u_int j = 100000, 882 n = 0; 883 884 for (; j; j--) { 885 i = bus_space_read_1(iot, ioh, fdsts) & 886 (NE7_DIO | NE7_RQM | NE7_CB); 887 if (i == NE7_RQM) 888 return n; 889 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 890 if (n >= sizeof(fdc->sc_status)) { 891 log(LOG_ERR, "fdcresult: overrun\n"); 892 return -1; 893 } 894 fdc->sc_status[n++] = 895 bus_space_read_1(iot, ioh, fddata); 896 } 897 delay(10); 898 } 899 log(LOG_ERR, "fdcresult: timeout\n"); 900 return -1; 901 } 902 903 int 904 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 905 { 906 u_char i; 907 u_int j = 100000; 908 909 for (; j; j--) { 910 i = bus_space_read_1(iot, ioh, fdsts) & 911 (NE7_DIO | NE7_RQM); 912 if (i == NE7_RQM) { 913 bus_space_write_1(iot, ioh, fddata, x); 914 return 0; 915 } 916 delay(10); 917 } 918 return -1; 919 } 920 921 int 922 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 923 { 924 struct fd_softc *fd; 925 const struct fd_type *type; 926 927 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 928 if (fd == NULL) 929 return (ENXIO); 930 931 type = fd_dev_to_type(fd, dev); 932 if (type == NULL) 933 return ENXIO; 934 935 if ((fd->sc_flags & FD_OPEN) != 0 && 936 memcmp(fd->sc_type, type, sizeof(*type))) 937 return EBUSY; 938 939 fd->sc_type_copy = *type; 940 fd->sc_type = &fd->sc_type_copy; 941 fd->sc_cylin = -1; 942 fd->sc_flags |= FD_OPEN; 943 944 fd_set_geometry(fd); 945 946 return 0; 947 } 948 949 int 950 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 951 { 952 struct fd_softc *fd = 953 device_lookup_private(&fd_cd, FDUNIT(dev)); 954 955 fd->sc_flags &= ~FD_OPEN; 956 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 957 return 0; 958 } 959 960 void 961 fdcstart(struct fdc_softc *fdc) 962 { 963 964 KASSERT(mutex_owned(&fdc->sc_mtx)); 965 966 if (!device_is_active(fdc->sc_dev)) 967 return; 968 969 #ifdef DIAGNOSTIC 970 /* only got here if controller's drive queue was inactive; should 971 be in idle state */ 972 if (fdc->sc_state != DEVIDLE) { 973 printf("fdcstart: not idle\n"); 974 return; 975 } 976 #endif 977 (void)fdcintr1(fdc); 978 } 979 980 static void 981 fdcpstatus(int n, struct fdc_softc *fdc) 982 { 983 char bits[64]; 984 985 switch (n) { 986 case 0: 987 printf("\n"); 988 break; 989 case 2: 990 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 991 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 992 break; 993 case 7: 994 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 995 printf(" (st0 %s", bits); 996 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 997 printf(" st1 %s", bits); 998 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 999 printf(" st2 %s", bits); 1000 printf(" cyl %d head %d sec %d)\n", 1001 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1002 break; 1003 #ifdef DIAGNOSTIC 1004 default: 1005 printf("\nfdcstatus: weird size"); 1006 break; 1007 #endif 1008 } 1009 } 1010 1011 void 1012 fdcstatus(device_t dv, int n, const char *s) 1013 { 1014 struct fdc_softc *fdc = device_private(device_parent(dv)); 1015 1016 if (n == 0) { 1017 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 1018 (void) fdcresult(fdc); 1019 n = 2; 1020 } 1021 fdcpstatus(n, fdc); 1022 1023 aprint_normal_dev(dv, "%s", s); 1024 1025 } 1026 1027 void 1028 fdctimeout(void *arg) 1029 { 1030 struct fdc_softc *fdc = arg; 1031 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1032 1033 mutex_enter(&fdc->sc_mtx); 1034 #ifdef DEBUG 1035 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 1036 #endif 1037 fdcstatus(fd->sc_dev, 0, "timeout"); 1038 1039 if (bufq_peek(fd->sc_q) != NULL) 1040 fdc->sc_state++; 1041 else 1042 fdc->sc_state = DEVIDLE; 1043 1044 (void)fdcintr1(fdc); 1045 mutex_exit(&fdc->sc_mtx); 1046 } 1047 1048 static int 1049 fdcintr1(struct fdc_softc *fdc) 1050 { 1051 #define st0 fdc->sc_status[0] 1052 #define cyl fdc->sc_status[1] 1053 struct fd_softc *fd; 1054 struct buf *bp; 1055 bus_space_tag_t iot = fdc->sc_iot; 1056 bus_space_handle_t ioh = fdc->sc_ioh; 1057 int read, head, sec, i, nblks; 1058 struct fd_type *type; 1059 struct ne7_fd_formb *finfo = NULL; 1060 1061 KASSERT(mutex_owned(&fdc->sc_mtx)); 1062 if (fdc->sc_state == PROBING) { 1063 #ifdef DEBUG 1064 printf("fdcintr: got probe interrupt\n"); 1065 #endif 1066 fdc->sc_probe++; 1067 goto out; 1068 } 1069 1070 loop: 1071 /* Is there a drive for the controller to do a transfer with? */ 1072 fd = TAILQ_FIRST(&fdc->sc_drives); 1073 if (fd == NULL) { 1074 fdc->sc_state = DEVIDLE; 1075 goto out; 1076 } 1077 1078 /* Is there a transfer to this drive? If not, deactivate drive. */ 1079 bp = bufq_peek(fd->sc_q); 1080 if (bp == NULL) { 1081 fd->sc_ops = 0; 1082 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1083 fd->sc_active = 0; 1084 goto loop; 1085 } 1086 1087 if (bp->b_flags & B_FORMAT) 1088 finfo = (struct ne7_fd_formb *)bp->b_data; 1089 1090 switch (fdc->sc_state) { 1091 case DEVIDLE: 1092 fdc->sc_errors = 0; 1093 fd->sc_skip = 0; 1094 fd->sc_bcount = bp->b_bcount; 1095 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 1096 callout_stop(&fd->sc_motoroff_ch); 1097 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1098 fdc->sc_state = MOTORWAIT; 1099 return 1; 1100 } 1101 if ((fd->sc_flags & FD_MOTOR) == 0) { 1102 /* Turn on the motor, being careful about pairing. */ 1103 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1104 if (ofd && ofd->sc_flags & FD_MOTOR) { 1105 callout_stop(&ofd->sc_motoroff_ch); 1106 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1107 } 1108 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1109 fd_set_motor(fdc, 0); 1110 fdc->sc_state = MOTORWAIT; 1111 /* Allow .25s for motor to stabilize. */ 1112 callout_reset(&fd->sc_motoron_ch, hz / 4, 1113 fd_motor_on, fd); 1114 return 1; 1115 } 1116 /* Make sure the right drive is selected. */ 1117 fd_set_motor(fdc, 0); 1118 1119 /* fall through */ 1120 case DOSEEK: 1121 doseek: 1122 if (fd->sc_cylin == bp->b_cylinder) 1123 goto doio; 1124 1125 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1126 out_fdc(iot, ioh, fd->sc_type->steprate); 1127 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1128 1129 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1130 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1131 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1132 1133 fd->sc_cylin = -1; 1134 fdc->sc_state = SEEKWAIT; 1135 1136 iostat_seek(fd->sc_dk.dk_stats); 1137 disk_busy(&fd->sc_dk); 1138 1139 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1140 return 1; 1141 1142 case DOIO: 1143 doio: 1144 type = fd->sc_type; 1145 if (finfo) 1146 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1147 (char *)finfo; 1148 sec = fd->sc_blkno % type->seccyl; 1149 nblks = type->seccyl - sec; 1150 nblks = uimin(nblks, fd->sc_bcount / FDC_BSIZE); 1151 nblks = uimin(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1152 fd->sc_nblks = nblks; 1153 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1154 head = sec / type->sectrac; 1155 sec -= head * type->sectrac; 1156 #ifdef DIAGNOSTIC 1157 { 1158 int block; 1159 block = (fd->sc_cylin * type->heads + head) 1160 * type->sectrac + sec; 1161 if (block != fd->sc_blkno) { 1162 printf("fdcintr: block %d != blkno " 1163 "%" PRId64 "\n", block, fd->sc_blkno); 1164 #ifdef DDB 1165 Debugger(); 1166 #endif 1167 } 1168 } 1169 #endif 1170 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1171 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1172 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1173 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1174 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1175 #ifdef FD_DEBUG 1176 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1177 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1178 head, sec, nblks); 1179 #endif 1180 if (finfo) { 1181 /* formatting */ 1182 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1183 fdc->sc_errors = 4; 1184 fdcretry(fdc); 1185 goto loop; 1186 } 1187 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1188 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1189 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1190 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1191 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1192 } else { 1193 if (read) 1194 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1195 else 1196 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1197 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1198 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1199 out_fdc(iot, ioh, head); 1200 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1201 out_fdc(iot, ioh, type->secsize);/* sector size */ 1202 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1203 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1204 out_fdc(iot, ioh, type->datalen);/* data length */ 1205 } 1206 fdc->sc_state = IOCOMPLETE; 1207 1208 disk_busy(&fd->sc_dk); 1209 1210 /* allow 2 seconds for operation */ 1211 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1212 return 1; /* will return later */ 1213 1214 case SEEKWAIT: 1215 callout_stop(&fdc->sc_timo_ch); 1216 fdc->sc_state = SEEKCOMPLETE; 1217 /* allow 1/50 second for heads to settle */ 1218 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 1219 return 1; 1220 1221 case SEEKCOMPLETE: 1222 /* no data on seek */ 1223 disk_unbusy(&fd->sc_dk, 0, 0); 1224 1225 /* Make sure seek really happened. */ 1226 out_fdc(iot, ioh, NE7CMD_SENSEI); 1227 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1228 cyl != bp->b_cylinder * fd->sc_type->step) { 1229 #ifdef FD_DEBUG 1230 fdcstatus(fd->sc_dev, 2, "seek failed"); 1231 #endif 1232 fdcretry(fdc); 1233 goto loop; 1234 } 1235 fd->sc_cylin = bp->b_cylinder; 1236 goto doio; 1237 1238 case IOTIMEDOUT: 1239 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1240 /* FALLTHROUGH */ 1241 case SEEKTIMEDOUT: 1242 case RECALTIMEDOUT: 1243 case RESETTIMEDOUT: 1244 fdcretry(fdc); 1245 goto loop; 1246 1247 case IOCOMPLETE: /* IO DONE, post-analyze */ 1248 callout_stop(&fdc->sc_timo_ch); 1249 1250 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1251 (bp->b_flags & B_READ)); 1252 1253 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1254 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1255 #ifdef FD_DEBUG 1256 fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? 1257 "read failed" : "write failed"); 1258 printf("blkno %llu nblks %d\n", 1259 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1260 #endif 1261 fdcretry(fdc); 1262 goto loop; 1263 } 1264 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1265 if (fdc->sc_errors) { 1266 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1267 fd->sc_skip / FDC_BSIZE, NULL); 1268 printf("\n"); 1269 fdc->sc_errors = 0; 1270 } 1271 fd->sc_blkno += fd->sc_nblks; 1272 fd->sc_skip += fd->sc_nbytes; 1273 fd->sc_bcount -= fd->sc_nbytes; 1274 if (!finfo && fd->sc_bcount > 0) { 1275 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1276 goto doseek; 1277 } 1278 fdfinish(fd, bp); 1279 goto loop; 1280 1281 case DORESET: 1282 /* try a reset, keep motor on */ 1283 fd_set_motor(fdc, 1); 1284 delay(100); 1285 fd_set_motor(fdc, 0); 1286 fdc->sc_state = RESETCOMPLETE; 1287 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1288 return 1; /* will return later */ 1289 1290 case RESETCOMPLETE: 1291 callout_stop(&fdc->sc_timo_ch); 1292 /* clear the controller output buffer */ 1293 for (i = 0; i < 4; i++) { 1294 out_fdc(iot, ioh, NE7CMD_SENSEI); 1295 (void) fdcresult(fdc); 1296 } 1297 1298 /* fall through */ 1299 case DORECAL: 1300 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1301 out_fdc(iot, ioh, fd->sc_drive); 1302 fdc->sc_state = RECALWAIT; 1303 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1304 return 1; /* will return later */ 1305 1306 case RECALWAIT: 1307 callout_stop(&fdc->sc_timo_ch); 1308 fdc->sc_state = RECALCOMPLETE; 1309 /* allow 1/30 second for heads to settle */ 1310 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 1311 return 1; /* will return later */ 1312 1313 case RECALCOMPLETE: 1314 out_fdc(iot, ioh, NE7CMD_SENSEI); 1315 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1316 #ifdef FD_DEBUG 1317 fdcstatus(fd->sc_dev, 2, "recalibrate failed"); 1318 #endif 1319 fdcretry(fdc); 1320 goto loop; 1321 } 1322 fd->sc_cylin = 0; 1323 goto doseek; 1324 1325 case MOTORWAIT: 1326 if (fd->sc_flags & FD_MOTOR_WAIT) 1327 return 1; /* time's not up yet */ 1328 goto doseek; 1329 1330 default: 1331 fdcstatus(fd->sc_dev, 0, "stray interrupt"); 1332 return 1; 1333 } 1334 #undef st0 1335 #undef cyl 1336 1337 out: 1338 cv_signal(&fdc->sc_cv); 1339 return 1; 1340 } 1341 1342 static void 1343 fdcintrcb(void *arg) 1344 { 1345 (void)fdcintr(arg); 1346 } 1347 1348 int 1349 fdcintr(void *arg) 1350 { 1351 int rc; 1352 struct fdc_softc *fdc = arg; 1353 1354 mutex_enter(&fdc->sc_mtx); 1355 rc = fdcintr1(fdc); 1356 mutex_exit(&fdc->sc_mtx); 1357 return rc; 1358 } 1359 1360 void 1361 fdcretry(struct fdc_softc *fdc) 1362 { 1363 struct fd_softc *fd; 1364 struct buf *bp; 1365 1366 fd = TAILQ_FIRST(&fdc->sc_drives); 1367 bp = bufq_peek(fd->sc_q); 1368 1369 if (fd->sc_opts & FDOPT_NORETRY) 1370 goto fail; 1371 switch (fdc->sc_errors) { 1372 case 0: 1373 /* try again */ 1374 fdc->sc_state = DOSEEK; 1375 break; 1376 1377 case 1: case 2: case 3: 1378 /* didn't work; try recalibrating */ 1379 fdc->sc_state = DORECAL; 1380 break; 1381 1382 case 4: 1383 /* still no go; reset the bastard */ 1384 fdc->sc_state = DORESET; 1385 break; 1386 1387 default: 1388 fail: 1389 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1390 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1391 fd->sc_skip / FDC_BSIZE, NULL); 1392 fdcpstatus(7, fdc); 1393 } 1394 1395 bp->b_error = EIO; 1396 fdfinish(fd, bp); 1397 } 1398 fdc->sc_errors++; 1399 } 1400 1401 int 1402 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1403 { 1404 struct fd_softc *fd = 1405 device_lookup_private(&fd_cd, FDUNIT(dev)); 1406 struct fdformat_parms *form_parms; 1407 struct fdformat_cmd *form_cmd; 1408 struct ne7_fd_formb *fd_formb; 1409 struct disklabel *lp = fd->sc_dk.dk_label; 1410 int error; 1411 unsigned int scratch; 1412 int il[FD_MAX_NSEC + 1]; 1413 int i, j; 1414 #ifdef __HAVE_OLD_DISKLABEL 1415 struct disklabel newlabel; 1416 #endif 1417 1418 switch (cmd) { 1419 case DIOCGPARTINFO: 1420 case DIOCGDINFO: 1421 #ifdef __HAVE_OLD_DISKLABEL 1422 case ODIOCGDINFO: 1423 #endif 1424 memset(lp, 0, sizeof(*lp)); 1425 1426 lp->d_type = DKTYPE_FLOPPY; 1427 lp->d_secsize = FDC_BSIZE; 1428 lp->d_nsectors = fd->sc_type->sectrac; 1429 lp->d_ntracks = fd->sc_type->heads; 1430 lp->d_ncylinders = fd->sc_type->cyls; 1431 lp->d_secpercyl = fd->sc_type->seccyl; 1432 lp->d_secperunit = fd->sc_type->size; 1433 1434 if (readdisklabel(dev, fdstrategy, lp, NULL) != NULL) 1435 return EINVAL; 1436 break; 1437 } 1438 1439 error = disk_ioctl(&fd->sc_dk, dev, cmd, addr, flag, l); 1440 if (error != EPASSTHROUGH) 1441 return error; 1442 1443 switch (cmd) { 1444 case DIOCWLABEL: 1445 if ((flag & FWRITE) == 0) 1446 return EBADF; 1447 /* XXX do something */ 1448 return 0; 1449 1450 case DIOCWDINFO: 1451 #ifdef __HAVE_OLD_DISKLABEL 1452 case ODIOCWDINFO: 1453 #endif 1454 { 1455 if ((flag & FWRITE) == 0) 1456 return EBADF; 1457 #ifdef __HAVE_OLD_DISKLABEL 1458 if (cmd == ODIOCWDINFO) { 1459 memset(&newlabel, 0, sizeof newlabel); 1460 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1461 addr = &newlabel; 1462 } 1463 #endif 1464 error = setdisklabel(lp, addr, 0, NULL); 1465 if (error) 1466 return error; 1467 1468 error = writedisklabel(dev, fdstrategy, lp, NULL); 1469 return error; 1470 } 1471 1472 case FDIOCGETFORMAT: 1473 form_parms = (struct fdformat_parms *)addr; 1474 form_parms->fdformat_version = FDFORMAT_VERSION; 1475 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1476 form_parms->ncyl = fd->sc_type->cyls; 1477 form_parms->nspt = fd->sc_type->sectrac; 1478 form_parms->ntrk = fd->sc_type->heads; 1479 form_parms->stepspercyl = fd->sc_type->step; 1480 form_parms->gaplen = fd->sc_type->gap2; 1481 form_parms->fillbyte = fd->sc_type->fillbyte; 1482 form_parms->interleave = fd->sc_type->interleave; 1483 switch (fd->sc_type->rate) { 1484 case FDC_500KBPS: 1485 form_parms->xfer_rate = 500 * 1024; 1486 break; 1487 case FDC_300KBPS: 1488 form_parms->xfer_rate = 300 * 1024; 1489 break; 1490 case FDC_250KBPS: 1491 form_parms->xfer_rate = 250 * 1024; 1492 break; 1493 default: 1494 return EINVAL; 1495 } 1496 return 0; 1497 1498 case FDIOCSETFORMAT: 1499 if((flag & FWRITE) == 0) 1500 return EBADF; /* must be opened for writing */ 1501 form_parms = (struct fdformat_parms *)addr; 1502 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1503 return EINVAL; /* wrong version of formatting prog */ 1504 1505 scratch = form_parms->nbps >> 7; 1506 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1507 scratch & ~(1 << (ffs(scratch)-1))) 1508 /* not a power-of-two multiple of 128 */ 1509 return EINVAL; 1510 1511 switch (form_parms->xfer_rate) { 1512 case 500 * 1024: 1513 fd->sc_type->rate = FDC_500KBPS; 1514 break; 1515 case 300 * 1024: 1516 fd->sc_type->rate = FDC_300KBPS; 1517 break; 1518 case 250 * 1024: 1519 fd->sc_type->rate = FDC_250KBPS; 1520 break; 1521 default: 1522 return EINVAL; 1523 } 1524 1525 if (form_parms->nspt > FD_MAX_NSEC || 1526 form_parms->fillbyte > 0xff || 1527 form_parms->interleave > 0xff) 1528 return EINVAL; 1529 fd->sc_type->sectrac = form_parms->nspt; 1530 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1531 return EINVAL; 1532 fd->sc_type->heads = form_parms->ntrk; 1533 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1534 fd->sc_type->secsize = ffs(scratch)-1; 1535 fd->sc_type->gap2 = form_parms->gaplen; 1536 fd->sc_type->cyls = form_parms->ncyl; 1537 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1538 form_parms->nbps / DEV_BSIZE; 1539 fd->sc_type->step = form_parms->stepspercyl; 1540 fd->sc_type->fillbyte = form_parms->fillbyte; 1541 fd->sc_type->interleave = form_parms->interleave; 1542 return 0; 1543 1544 case FDIOCFORMAT_TRACK: 1545 if((flag & FWRITE) == 0) 1546 return EBADF; /* must be opened for writing */ 1547 form_cmd = (struct fdformat_cmd *)addr; 1548 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1549 return EINVAL; /* wrong version of formatting prog */ 1550 1551 if (form_cmd->head >= fd->sc_type->heads || 1552 form_cmd->cylinder >= fd->sc_type->cyls) { 1553 return EINVAL; 1554 } 1555 1556 fd_formb = kmem_alloc(sizeof(*fd_formb), KM_SLEEP); 1557 fd_formb->head = form_cmd->head; 1558 fd_formb->cyl = form_cmd->cylinder; 1559 fd_formb->transfer_rate = fd->sc_type->rate; 1560 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1561 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1562 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1563 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1564 1565 memset(il, 0, sizeof il); 1566 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1567 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1568 j++; 1569 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1570 j += fd->sc_type->interleave; 1571 } 1572 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1573 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1574 fd_formb->fd_formb_headno(i) = form_cmd->head; 1575 fd_formb->fd_formb_secno(i) = il[i+1]; 1576 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1577 } 1578 1579 error = fdformat(dev, fd_formb, l); 1580 kmem_free(fd_formb, sizeof(*fd_formb)); 1581 return error; 1582 1583 case FDIOCGETOPTS: /* get drive options */ 1584 *(int *)addr = fd->sc_opts; 1585 return 0; 1586 1587 case FDIOCSETOPTS: /* set drive options */ 1588 fd->sc_opts = *(int *)addr; 1589 return 0; 1590 1591 default: 1592 return ENOTTY; 1593 } 1594 1595 #ifdef DIAGNOSTIC 1596 panic("fdioctl: impossible"); 1597 #endif 1598 } 1599 1600 int 1601 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1602 { 1603 int rv = 0; 1604 struct fd_softc *fd = 1605 device_lookup_private(&fd_cd, FDUNIT(dev)); 1606 struct fd_type *type = fd->sc_type; 1607 struct buf *bp; 1608 1609 /* set up a buffer header for fdstrategy() */ 1610 bp = getiobuf(NULL, false); 1611 if (bp == NULL) 1612 return ENOBUFS; 1613 1614 bp->b_cflags = BC_BUSY; 1615 bp->b_flags = B_PHYS | B_FORMAT; 1616 bp->b_proc = l->l_proc; 1617 bp->b_dev = dev; 1618 1619 /* 1620 * calculate a fake blkno, so fdstrategy() would initiate a 1621 * seek to the requested cylinder 1622 */ 1623 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1624 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1625 1626 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1627 bp->b_data = (void *)finfo; 1628 1629 #ifdef FD_DEBUG 1630 printf("fdformat: blkno %" PRIx64 " count %x\n", 1631 bp->b_blkno, bp->b_bcount); 1632 #endif 1633 1634 /* now do the format */ 1635 fdstrategy(bp); 1636 1637 /* ...and wait for it to complete */ 1638 rv = biowait(bp); 1639 putiobuf(bp); 1640 return rv; 1641 } 1642 1643 /* 1644 * Mountroot hook: prompt the user to enter the root file system 1645 * floppy. 1646 */ 1647 void 1648 fd_mountroot_hook(device_t dev) 1649 { 1650 int c; 1651 1652 printf("Insert filesystem floppy and press return."); 1653 cnpollc(1); 1654 for (;;) { 1655 c = cngetc(); 1656 if ((c == '\r') || (c == '\n')) { 1657 printf("\n"); 1658 break; 1659 } 1660 } 1661 cnpollc(0); 1662 } 1663 1664 static void 1665 fd_set_geometry(struct fd_softc *fd) 1666 { 1667 const struct fd_type *fdt; 1668 1669 fdt = fd->sc_type; 1670 if (fdt == NULL) { 1671 fdt = fd->sc_deftype; 1672 if (fdt == NULL) 1673 return; 1674 } 1675 1676 struct disk_geom *dg = &fd->sc_dk.dk_geom; 1677 1678 memset(dg, 0, sizeof(*dg)); 1679 dg->dg_secperunit = fdt->size; 1680 dg->dg_nsectors = fdt->sectrac; 1681 switch (fdt->secsize) { 1682 case 2: 1683 dg->dg_secsize = 512; 1684 break; 1685 case 3: 1686 dg->dg_secsize = 1024; 1687 break; 1688 default: 1689 break; 1690 } 1691 dg->dg_ntracks = fdt->heads; 1692 dg->dg_ncylinders = fdt->cyls; 1693 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 1694 } 1695
Indexes created Thu Sep 25 16:09:42 GMT 2025