fd.c revision 1.73.2.1
1 /* $NetBSD: fd.c,v 1.73.2.1 2007/05/13 17:36:26 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 /* 74 * Floppy formatting facilities merged from FreeBSD fd.c driver: 75 * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp 76 * which carries the same copyright/redistribution notice as shown above with 77 * the addition of the following statement before the "Redistribution and 78 * use ..." clause: 79 * 80 * Copyright (c) 1993, 1994 by 81 * jc (at) irbs.UUCP (John Capo) 82 * vak (at) zebub.msk.su (Serge Vakulenko) 83 * ache (at) astral.msk.su (Andrew A. Chernov) 84 * 85 * Copyright (c) 1993, 1994, 1995 by 86 * joerg_wunsch (at) uriah.sax.de (Joerg Wunsch) 87 * dufault (at) hda.com (Peter Dufault) 88 */ 89 90 #include <sys/cdefs.h> 91 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.73.2.1 2007/05/13 17:36:26 ad Exp $"); 92 93 #include "rnd.h" 94 #include "opt_ddb.h" 95 96 /* 97 * XXX This driver should be properly MI'd some day, but this allows us 98 * XXX to eliminate a lot of code duplication for now. 99 */ 100 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 101 !defined(bebox) && !defined(evbmips) && !defined(i386) && \ 102 !defined(prep) && !defined(sandpoint) && !defined(x86_64) 103 #error platform not supported by this driver, yet 104 #endif 105 106 #include <sys/param.h> 107 #include <sys/systm.h> 108 #include <sys/callout.h> 109 #include <sys/kernel.h> 110 #include <sys/file.h> 111 #include <sys/ioctl.h> 112 #include <sys/device.h> 113 #include <sys/disklabel.h> 114 #include <sys/disk.h> 115 #include <sys/buf.h> 116 #include <sys/bufq.h> 117 #include <sys/malloc.h> 118 #include <sys/uio.h> 119 #include <sys/syslog.h> 120 #include <sys/queue.h> 121 #include <sys/proc.h> 122 #include <sys/fdio.h> 123 #include <sys/conf.h> 124 #if NRND > 0 125 #include <sys/rnd.h> 126 #endif 127 128 #include <prop/proplib.h> 129 130 #include <uvm/uvm_extern.h> 131 132 #include <dev/cons.h> 133 134 #include <machine/cpu.h> 135 #include <machine/bus.h> 136 137 #include "locators.h" 138 139 #if defined(atari) 140 /* 141 * On the atari, it is configured as fdcisa 142 */ 143 #define FDCCF_DRIVE FDCISACF_DRIVE 144 #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT 145 146 #define fd_cd fdisa_cd 147 #endif /* atari */ 148 149 #include <machine/intr.h> 150 151 #include <dev/isa/isavar.h> 152 #include <dev/isa/isadmavar.h> 153 154 #include <dev/isa/fdreg.h> 155 #include <dev/isa/fdcvar.h> 156 157 #if defined(i386) 158 159 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 160 #include <i386/isa/nvram.h> 161 162 #include "mca.h" 163 #if NMCA > 0 164 #include <machine/mca_machdep.h> /* for MCA_system */ 165 #endif 166 167 #endif /* i386 */ 168 169 #include <dev/isa/fdvar.h> 170 171 #define FDUNIT(dev) (minor(dev) / 8) 172 #define FDTYPE(dev) (minor(dev) % 8) 173 174 /* (mis)use device use flag to identify format operation */ 175 #define B_FORMAT B_DEVPRIVATE 176 177 /* controller driver configuration */ 178 int fdprint(void *, const char *); 179 180 #if NMCA > 0 181 /* MCA - specific entries */ 182 const struct fd_type mca_fd_types[] = { 183 { 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 */ 184 { 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 */ 185 }; 186 #endif /* NMCA > 0 */ 187 188 /* The order of entries in the following table is important -- BEWARE! */ 189 190 #if defined(atari) 191 const struct fd_type fd_types[] = { 192 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 193 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 194 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 195 }; 196 #else 197 const struct fd_type fd_types[] = { 198 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 199 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 200 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 201 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 202 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 203 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 204 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 205 }; 206 #endif /* defined(atari) */ 207 208 void fdcfinishattach(struct device *); 209 int fdprobe(struct device *, struct cfdata *, void *); 210 void fdattach(struct device *, struct device *, void *); 211 212 extern struct cfdriver fd_cd; 213 214 #ifdef atari 215 CFATTACH_DECL(fdisa, sizeof(struct fd_softc), 216 fdprobe, fdattach, NULL, NULL); 217 #else 218 CFATTACH_DECL(fd, sizeof(struct fd_softc), 219 fdprobe, fdattach, NULL, NULL); 220 #endif 221 222 dev_type_open(fdopen); 223 dev_type_close(fdclose); 224 dev_type_read(fdread); 225 dev_type_write(fdwrite); 226 dev_type_ioctl(fdioctl); 227 dev_type_strategy(fdstrategy); 228 229 const struct bdevsw fd_bdevsw = { 230 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 231 }; 232 233 const struct cdevsw fd_cdevsw = { 234 fdopen, fdclose, fdread, fdwrite, fdioctl, 235 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 236 }; 237 238 void fdgetdisklabel(struct fd_softc *); 239 int fd_get_parms(struct fd_softc *); 240 void fdstart(struct fd_softc *); 241 242 struct dkdriver fddkdriver = { fdstrategy, NULL }; 243 244 #if defined(i386) 245 const struct fd_type *fd_nvtotype(char *, int, int); 246 #endif /* i386 */ 247 void fd_set_motor(struct fdc_softc *fdc, int reset); 248 void fd_motor_off(void *arg); 249 void fd_motor_on(void *arg); 250 int fdcresult(struct fdc_softc *fdc); 251 void fdcstart(struct fdc_softc *fdc); 252 void fdcstatus(struct device *dv, int n, const char *s); 253 void fdctimeout(void *arg); 254 void fdcpseudointr(void *arg); 255 void fdcretry(struct fdc_softc *fdc); 256 void fdfinish(struct fd_softc *fd, struct buf *bp, int); 257 inline const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 258 int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); 259 static void fd_set_properties(struct fd_softc *fd); 260 261 void fd_mountroot_hook(struct device *); 262 263 /* 264 * Arguments passed between fdcattach and fdprobe. 265 */ 266 struct fdc_attach_args { 267 int fa_drive; 268 const struct fd_type *fa_deftype; 269 }; 270 271 /* 272 * Print the location of a disk drive (called just before attaching the 273 * the drive). If `fdc' is not NULL, the drive was found but was not 274 * in the system config file; print the drive name as well. 275 * Return QUIET (config_find ignores this if the device was configured) to 276 * avoid printing `fdN not configured' messages. 277 */ 278 int 279 fdprint(aux, fdc) 280 void *aux; 281 const char *fdc; 282 { 283 register struct fdc_attach_args *fa = aux; 284 285 if (!fdc) 286 aprint_normal(" drive %d", fa->fa_drive); 287 return QUIET; 288 } 289 290 void 291 fdcattach(fdc) 292 struct fdc_softc *fdc; 293 { 294 callout_init(&fdc->sc_timo_ch); 295 callout_init(&fdc->sc_intr_ch); 296 297 fdc->sc_state = DEVIDLE; 298 TAILQ_INIT(&fdc->sc_drives); 299 300 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 301 302 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 303 printf("%s: can't reserve drq %d\n", 304 fdc->sc_dev.dv_xname, fdc->sc_drq); 305 return; 306 } 307 308 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 309 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 310 printf("%s: can't set up ISA DMA map\n", 311 fdc->sc_dev.dv_xname); 312 return; 313 } 314 315 config_interrupts(&fdc->sc_dev, fdcfinishattach); 316 } 317 318 void 319 fdcfinishattach(self) 320 struct device *self; 321 { 322 struct fdc_softc *fdc = (void *)self; 323 bus_space_tag_t iot = fdc->sc_iot; 324 bus_space_handle_t ioh = fdc->sc_ioh; 325 struct fdc_attach_args fa; 326 #if defined(i386) 327 int type; 328 #endif 329 330 /* 331 * Reset the controller to get it into a known state. Not all 332 * probes necessarily need do this to discover the controller up 333 * front, so don't assume anything. 334 */ 335 336 bus_space_write_1(iot, ioh, fdout, 0); 337 delay(100); 338 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 339 340 /* see if it can handle a command */ 341 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 342 printf ("%s: can't reset controller\n", fdc->sc_dev.dv_xname); 343 return; 344 } 345 out_fdc(iot, ioh, 0xdf); 346 out_fdc(iot, ioh, 2); 347 348 #if defined(i386) 349 /* 350 * The NVRAM info only tells us about the first two disks on the 351 * `primary' floppy controller. 352 */ 353 /* XXX device_unit() abuse */ 354 if (device_unit(&fdc->sc_dev) == 0) 355 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 356 else 357 type = -1; 358 #endif /* i386 */ 359 360 /* physical limit: four drives per controller. */ 361 fdc->sc_state = PROBING; 362 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 363 if (fdc->sc_known) { 364 if (fdc->sc_present & (1 << fa.fa_drive)) { 365 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 366 config_found(&fdc->sc_dev, (void *)&fa, 367 fdprint); 368 } 369 } else { 370 #if defined(i386) 371 if (type >= 0 && fa.fa_drive < 2) 372 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 373 type, fa.fa_drive); 374 else 375 fa.fa_deftype = NULL; /* unknown */ 376 #elif defined(atari) 377 /* 378 * Atari has a different ordening, defaults to 1.44 379 */ 380 fa.fa_deftype = &fd_types[2]; 381 #else 382 /* 383 * Default to 1.44MB on Alpha and BeBox. How do we tell 384 * on these platforms? 385 */ 386 fa.fa_deftype = &fd_types[0]; 387 #endif /* i386 */ 388 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 389 } 390 } 391 fdc->sc_state = DEVIDLE; 392 } 393 394 int 395 fdprobe(parent, match, aux) 396 struct device *parent; 397 struct cfdata *match; 398 void *aux; 399 { 400 struct fdc_softc *fdc = (void *)parent; 401 struct cfdata *cf = match; 402 struct fdc_attach_args *fa = aux; 403 int drive = fa->fa_drive; 404 bus_space_tag_t iot = fdc->sc_iot; 405 bus_space_handle_t ioh = fdc->sc_ioh; 406 int n; 407 int s; 408 409 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 410 cf->cf_loc[FDCCF_DRIVE] != drive) 411 return 0; 412 /* 413 * XXX 414 * This is to work around some odd interactions between this driver 415 * and SMC Ethernet cards. 416 */ 417 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 418 return 0; 419 420 /* Use PNP information if available */ 421 if (fdc->sc_known) 422 return 1; 423 424 s = splbio(); 425 /* toss any interrupt status */ 426 for (n = 0; n < 4; n++) { 427 out_fdc(iot, ioh, NE7CMD_SENSEI); 428 (void) fdcresult(fdc); 429 } 430 /* select drive and turn on motor */ 431 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 432 /* wait for motor to spin up */ 433 (void) tsleep(fdc, PWAIT, "fdprobe1", hz / 4); 434 out_fdc(iot, ioh, NE7CMD_RECAL); 435 out_fdc(iot, ioh, drive); 436 /* wait for recalibrate, up to 2s */ 437 if (tsleep(fdc, PWAIT, "fdprobe2", 2 * hz) != EWOULDBLOCK) { 438 #ifdef FD_DEBUG 439 /* XXX */ 440 printf("fdprobe: got intr\n"); 441 #endif 442 } 443 out_fdc(iot, ioh, NE7CMD_SENSEI); 444 n = fdcresult(fdc); 445 #ifdef FD_DEBUG 446 { 447 int i; 448 printf("fdprobe: status"); 449 for (i = 0; i < n; i++) 450 printf(" %x", fdc->sc_status[i]); 451 printf("\n"); 452 } 453 #endif 454 /* turn off motor */ 455 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 456 splx(s); 457 458 #if defined(bebox) /* XXX What is this about? --thorpej (at) NetBSD.org */ 459 if (n != 2 || (fdc->sc_status[1] != 0)) 460 return 0; 461 #else 462 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 463 return 0; 464 #endif /* bebox */ 465 466 return 1; 467 } 468 469 /* 470 * Controller is working, and drive responded. Attach it. 471 */ 472 void 473 fdattach(parent, self, aux) 474 struct device *parent, *self; 475 void *aux; 476 { 477 struct fdc_softc *fdc = (void *)parent; 478 struct fd_softc *fd = (void *)self; 479 struct fdc_attach_args *fa = aux; 480 const struct fd_type *type = fa->fa_deftype; 481 int drive = fa->fa_drive; 482 483 callout_init(&fd->sc_motoron_ch); 484 callout_init(&fd->sc_motoroff_ch); 485 486 /* XXX Allow `flags' to override device type? */ 487 488 if (type) 489 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 490 type->cyls, type->heads, type->sectrac); 491 else 492 printf(": density unknown\n"); 493 494 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 495 fd->sc_cylin = -1; 496 fd->sc_drive = drive; 497 fd->sc_deftype = type; 498 fdc->sc_fd[drive] = fd; 499 500 /* 501 * Initialize and attach the disk structure. 502 */ 503 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 504 fd->sc_dk.dk_driver = &fddkdriver; 505 disk_attach(&fd->sc_dk); 506 507 /* 508 * Establish a mountroot hook. 509 */ 510 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 511 512 /* Needed to power off if the motor is on when we halt. */ 513 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 514 515 #if NRND > 0 516 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 517 RND_TYPE_DISK, 0); 518 #endif 519 520 fd_set_properties(fd); 521 } 522 523 #if defined(i386) 524 /* 525 * Translate nvram type into internal data structure. Return NULL for 526 * none/unknown/unusable. 527 */ 528 const struct fd_type * 529 fd_nvtotype(fdc, nvraminfo, drive) 530 char *fdc; 531 int nvraminfo, drive; 532 { 533 int type; 534 535 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 536 switch (type) { 537 case NVRAM_DISKETTE_NONE: 538 return NULL; 539 case NVRAM_DISKETTE_12M: 540 return &fd_types[1]; 541 case NVRAM_DISKETTE_TYPE5: 542 case NVRAM_DISKETTE_TYPE6: 543 /* XXX We really ought to handle 2.88MB format. */ 544 case NVRAM_DISKETTE_144M: 545 #if NMCA > 0 546 if (MCA_system) 547 return &mca_fd_types[0]; 548 else 549 #endif /* NMCA > 0 */ 550 return &fd_types[0]; 551 case NVRAM_DISKETTE_360K: 552 return &fd_types[3]; 553 case NVRAM_DISKETTE_720K: 554 #if NMCA > 0 555 if (MCA_system) 556 return &mca_fd_types[1]; 557 else 558 #endif /* NMCA > 0 */ 559 return &fd_types[4]; 560 default: 561 printf("%s: drive %d: unknown device type 0x%x\n", 562 fdc, drive, type); 563 return NULL; 564 } 565 } 566 #endif /* i386 */ 567 568 inline const struct fd_type * 569 fd_dev_to_type(fd, dev) 570 struct fd_softc *fd; 571 dev_t dev; 572 { 573 u_int type = FDTYPE(dev); 574 575 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 576 return NULL; 577 return type ? &fd_types[type - 1] : fd->sc_deftype; 578 } 579 580 void 581 fdstrategy(bp) 582 register struct buf *bp; /* IO operation to perform */ 583 { 584 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 585 int sz, s, error = 0; 586 587 /* Valid unit, controller, and request? */ 588 if (bp->b_blkno < 0 || 589 ((bp->b_bcount % FDC_BSIZE) != 0 && 590 (bp->b_flags & B_FORMAT) == 0)) { 591 error = EINVAL; 592 goto done; 593 } 594 595 /* If it's a null transfer, return immediately. */ 596 if (bp->b_bcount == 0) 597 goto done; 598 599 sz = howmany(bp->b_bcount, FDC_BSIZE); 600 601 if (bp->b_blkno + sz > fd->sc_type->size) { 602 sz = fd->sc_type->size - bp->b_blkno; 603 if (sz == 0) { 604 /* If exactly at end of disk, return EOF. */ 605 goto done; 606 } 607 if (sz < 0) { 608 /* If past end of disk, return EINVAL. */ 609 error = EINVAL; 610 goto done; 611 } 612 /* Otherwise, truncate request. */ 613 bp->b_bcount = sz << DEV_BSHIFT; 614 } 615 616 bp->b_rawblkno = bp->b_blkno; 617 bp->b_cylinder = 618 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 619 620 #ifdef FD_DEBUG 621 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 622 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 623 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 624 #endif 625 626 /* Queue transfer on drive, activate drive and controller if idle. */ 627 s = splbio(); 628 BUFQ_PUT(fd->sc_q, bp); 629 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 630 if (fd->sc_active == 0) 631 fdstart(fd); 632 #ifdef DIAGNOSTIC 633 else { 634 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dev); 635 if (fdc->sc_state == DEVIDLE) { 636 printf("fdstrategy: controller inactive\n"); 637 fdcstart(fdc); 638 } 639 } 640 #endif 641 splx(s); 642 return; 643 644 done: 645 /* Toss transfer; we're done early. */ 646 biodone(bp, error, 0); 647 } 648 649 void 650 fdstart(fd) 651 struct fd_softc *fd; 652 { 653 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dev); 654 int active = !TAILQ_EMPTY(&fdc->sc_drives); 655 656 /* Link into controller queue. */ 657 fd->sc_active = 1; 658 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 659 660 /* If controller not already active, start it. */ 661 if (!active) 662 fdcstart(fdc); 663 } 664 665 void 666 fdfinish(fd, bp, error) 667 struct fd_softc *fd; 668 struct buf *bp; 669 int error; 670 { 671 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dev); 672 673 /* 674 * Move this drive to the end of the queue to give others a `fair' 675 * chance. We only force a switch if N operations are completed while 676 * another drive is waiting to be serviced, since there is a long motor 677 * startup delay whenever we switch. 678 */ 679 (void)BUFQ_GET(fd->sc_q); 680 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 681 fd->sc_ops = 0; 682 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 683 if (BUFQ_PEEK(fd->sc_q) != NULL) 684 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 685 else 686 fd->sc_active = 0; 687 } 688 fd->sc_skip = 0; 689 690 #if NRND > 0 691 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 692 #endif 693 694 biodone(bp, error, fd->sc_bcount); 695 /* turn off motor 5s from now */ 696 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 697 fdc->sc_state = DEVIDLE; 698 } 699 700 int 701 fdread(dev_t dev, struct uio *uio, int flags) 702 { 703 704 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 705 } 706 707 int 708 fdwrite(dev_t dev, struct uio *uio, int flags) 709 { 710 711 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 712 } 713 714 void 715 fd_set_motor(fdc, reset) 716 struct fdc_softc *fdc; 717 int reset; 718 { 719 struct fd_softc *fd; 720 u_char status; 721 int n; 722 723 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 724 status = fd->sc_drive; 725 else 726 status = 0; 727 if (!reset) 728 status |= FDO_FRST | FDO_FDMAEN; 729 for (n = 0; n < 4; n++) 730 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 731 status |= FDO_MOEN(n); 732 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 733 } 734 735 void 736 fd_motor_off(arg) 737 void *arg; 738 { 739 struct fd_softc *fd = arg; 740 int s; 741 742 s = splbio(); 743 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 744 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dev), 0); 745 splx(s); 746 } 747 748 void 749 fd_motor_on(arg) 750 void *arg; 751 { 752 struct fd_softc *fd = arg; 753 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dev); 754 int s; 755 756 s = splbio(); 757 fd->sc_flags &= ~FD_MOTOR_WAIT; 758 if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT)) 759 (void) fdcintr(fdc); 760 splx(s); 761 } 762 763 int 764 fdcresult(fdc) 765 struct fdc_softc *fdc; 766 { 767 bus_space_tag_t iot = fdc->sc_iot; 768 bus_space_handle_t ioh = fdc->sc_ioh; 769 u_char i; 770 u_int j = 100000, 771 n = 0; 772 773 for (; j; j--) { 774 i = bus_space_read_1(iot, ioh, fdsts) & 775 (NE7_DIO | NE7_RQM | NE7_CB); 776 if (i == NE7_RQM) 777 return n; 778 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 779 if (n >= sizeof(fdc->sc_status)) { 780 log(LOG_ERR, "fdcresult: overrun\n"); 781 return -1; 782 } 783 fdc->sc_status[n++] = 784 bus_space_read_1(iot, ioh, fddata); 785 } 786 delay(10); 787 } 788 log(LOG_ERR, "fdcresult: timeout\n"); 789 return -1; 790 } 791 792 int 793 out_fdc(iot, ioh, x) 794 bus_space_tag_t iot; 795 bus_space_handle_t ioh; 796 u_char x; 797 { 798 u_char i; 799 u_int j = 100000; 800 801 for (; j; j--) { 802 i = bus_space_read_1(iot, ioh, fdsts) & 803 (NE7_DIO | NE7_RQM); 804 if (i == NE7_RQM) { 805 bus_space_write_1(iot, ioh, fddata, x); 806 return 0; 807 } 808 delay(10); 809 } 810 return -1; 811 } 812 813 int 814 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 815 { 816 struct fd_softc *fd; 817 const struct fd_type *type; 818 819 fd = device_lookup(&fd_cd, FDUNIT(dev)); 820 if (fd == NULL) 821 return (ENXIO); 822 823 type = fd_dev_to_type(fd, dev); 824 if (type == NULL) 825 return ENXIO; 826 827 if ((fd->sc_flags & FD_OPEN) != 0 && 828 memcmp(fd->sc_type, type, sizeof(*type))) 829 return EBUSY; 830 831 fd->sc_type_copy = *type; 832 fd->sc_type = &fd->sc_type_copy; 833 fd->sc_cylin = -1; 834 fd->sc_flags |= FD_OPEN; 835 836 fd_set_properties(fd); 837 838 return 0; 839 } 840 841 int 842 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 843 { 844 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 845 846 fd->sc_flags &= ~FD_OPEN; 847 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 848 return 0; 849 } 850 851 void 852 fdcstart(fdc) 853 struct fdc_softc *fdc; 854 { 855 856 #ifdef DIAGNOSTIC 857 /* only got here if controller's drive queue was inactive; should 858 be in idle state */ 859 if (fdc->sc_state != DEVIDLE) { 860 printf("fdcstart: not idle\n"); 861 return; 862 } 863 #endif 864 (void) fdcintr(fdc); 865 } 866 867 void 868 fdcstatus(dv, n, s) 869 struct device *dv; 870 int n; 871 const char *s; 872 { 873 struct fdc_softc *fdc = (void *)device_parent(dv); 874 char bits[64]; 875 876 if (n == 0) { 877 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 878 (void) fdcresult(fdc); 879 n = 2; 880 } 881 882 printf("%s: %s", dv->dv_xname, s); 883 884 switch (n) { 885 case 0: 886 printf("\n"); 887 break; 888 case 2: 889 printf(" (st0 %s cyl %d)\n", 890 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 891 bits, sizeof(bits)), fdc->sc_status[1]); 892 break; 893 case 7: 894 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 895 NE7_ST0BITS, bits, sizeof(bits))); 896 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 897 NE7_ST1BITS, bits, sizeof(bits))); 898 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 899 NE7_ST2BITS, bits, sizeof(bits))); 900 printf(" cyl %d head %d sec %d)\n", 901 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 902 break; 903 #ifdef DIAGNOSTIC 904 default: 905 printf("\nfdcstatus: weird size"); 906 break; 907 #endif 908 } 909 } 910 911 void 912 fdctimeout(arg) 913 void *arg; 914 { 915 struct fdc_softc *fdc = arg; 916 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 917 int s; 918 919 s = splbio(); 920 #ifdef DEBUG 921 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 922 #endif 923 fdcstatus(&fd->sc_dev, 0, "timeout"); 924 925 if (BUFQ_PEEK(fd->sc_q) != NULL) 926 fdc->sc_state++; 927 else 928 fdc->sc_state = DEVIDLE; 929 930 (void) fdcintr(fdc); 931 splx(s); 932 } 933 934 void 935 fdcpseudointr(arg) 936 void *arg; 937 { 938 int s; 939 940 /* Just ensure it has the right spl. */ 941 s = splbio(); 942 (void) fdcintr(arg); 943 splx(s); 944 } 945 946 int 947 fdcintr(arg) 948 void *arg; 949 { 950 struct fdc_softc *fdc = arg; 951 #define st0 fdc->sc_status[0] 952 #define cyl fdc->sc_status[1] 953 struct fd_softc *fd; 954 struct buf *bp; 955 bus_space_tag_t iot = fdc->sc_iot; 956 bus_space_handle_t ioh = fdc->sc_ioh; 957 int read, head, sec, i, nblks; 958 struct fd_type *type; 959 struct ne7_fd_formb *finfo = NULL; 960 961 if (fdc->sc_state == PROBING) { 962 #ifdef DEBUG 963 printf("fdcintr: got probe interrupt\n"); 964 #endif 965 wakeup(fdc); 966 return 1; 967 } 968 969 loop: 970 /* Is there a drive for the controller to do a transfer with? */ 971 fd = TAILQ_FIRST(&fdc->sc_drives); 972 if (fd == NULL) { 973 fdc->sc_state = DEVIDLE; 974 return 1; 975 } 976 977 /* Is there a transfer to this drive? If not, deactivate drive. */ 978 bp = BUFQ_PEEK(fd->sc_q); 979 if (bp == NULL) { 980 fd->sc_ops = 0; 981 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 982 fd->sc_active = 0; 983 goto loop; 984 } 985 986 if (bp->b_flags & B_FORMAT) 987 finfo = (struct ne7_fd_formb *)bp->b_data; 988 989 switch (fdc->sc_state) { 990 case DEVIDLE: 991 fdc->sc_errors = 0; 992 fd->sc_skip = 0; 993 fd->sc_bcount = bp->b_bcount; 994 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 995 callout_stop(&fd->sc_motoroff_ch); 996 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 997 fdc->sc_state = MOTORWAIT; 998 return 1; 999 } 1000 if ((fd->sc_flags & FD_MOTOR) == 0) { 1001 /* Turn on the motor, being careful about pairing. */ 1002 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1003 if (ofd && ofd->sc_flags & FD_MOTOR) { 1004 callout_stop(&ofd->sc_motoroff_ch); 1005 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1006 } 1007 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1008 fd_set_motor(fdc, 0); 1009 fdc->sc_state = MOTORWAIT; 1010 /* Allow .25s for motor to stabilize. */ 1011 callout_reset(&fd->sc_motoron_ch, hz / 4, 1012 fd_motor_on, fd); 1013 return 1; 1014 } 1015 /* Make sure the right drive is selected. */ 1016 fd_set_motor(fdc, 0); 1017 1018 /* fall through */ 1019 case DOSEEK: 1020 doseek: 1021 if (fd->sc_cylin == bp->b_cylinder) 1022 goto doio; 1023 1024 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1025 out_fdc(iot, ioh, fd->sc_type->steprate); 1026 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1027 1028 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1029 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1030 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1031 1032 fd->sc_cylin = -1; 1033 fdc->sc_state = SEEKWAIT; 1034 1035 iostat_seek(fd->sc_dk.dk_stats); 1036 disk_busy(&fd->sc_dk); 1037 1038 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1039 return 1; 1040 1041 case DOIO: 1042 doio: 1043 type = fd->sc_type; 1044 if (finfo) 1045 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1046 (char *)finfo; 1047 sec = fd->sc_blkno % type->seccyl; 1048 nblks = type->seccyl - sec; 1049 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1050 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1051 fd->sc_nblks = nblks; 1052 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1053 head = sec / type->sectrac; 1054 sec -= head * type->sectrac; 1055 #ifdef DIAGNOSTIC 1056 { 1057 int block; 1058 block = (fd->sc_cylin * type->heads + head) 1059 * type->sectrac + sec; 1060 if (block != fd->sc_blkno) { 1061 printf("fdcintr: block %d != blkno " 1062 "%" PRId64 "\n", block, fd->sc_blkno); 1063 #ifdef DDB 1064 Debugger(); 1065 #endif 1066 } 1067 } 1068 #endif 1069 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1070 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1071 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1072 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1073 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1074 #ifdef FD_DEBUG 1075 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1076 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1077 head, sec, nblks); 1078 #endif 1079 if (finfo) { 1080 /* formatting */ 1081 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1082 fdc->sc_errors = 4; 1083 fdcretry(fdc); 1084 goto loop; 1085 } 1086 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1087 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1088 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1089 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1090 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1091 } else { 1092 if (read) 1093 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1094 else 1095 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1096 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1097 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1098 out_fdc(iot, ioh, head); 1099 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1100 out_fdc(iot, ioh, type->secsize);/* sector size */ 1101 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1102 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1103 out_fdc(iot, ioh, type->datalen);/* data length */ 1104 } 1105 fdc->sc_state = IOCOMPLETE; 1106 1107 disk_busy(&fd->sc_dk); 1108 1109 /* allow 2 seconds for operation */ 1110 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1111 return 1; /* will return later */ 1112 1113 case SEEKWAIT: 1114 callout_stop(&fdc->sc_timo_ch); 1115 fdc->sc_state = SEEKCOMPLETE; 1116 /* allow 1/50 second for heads to settle */ 1117 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1118 return 1; 1119 1120 case SEEKCOMPLETE: 1121 /* no data on seek */ 1122 disk_unbusy(&fd->sc_dk, 0, 0); 1123 1124 /* Make sure seek really happened. */ 1125 out_fdc(iot, ioh, NE7CMD_SENSEI); 1126 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1127 cyl != bp->b_cylinder * fd->sc_type->step) { 1128 #ifdef FD_DEBUG 1129 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1130 #endif 1131 fdcretry(fdc); 1132 goto loop; 1133 } 1134 fd->sc_cylin = bp->b_cylinder; 1135 goto doio; 1136 1137 case IOTIMEDOUT: 1138 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1139 case SEEKTIMEDOUT: 1140 case RECALTIMEDOUT: 1141 case RESETTIMEDOUT: 1142 fdcretry(fdc); 1143 goto loop; 1144 1145 case IOCOMPLETE: /* IO DONE, post-analyze */ 1146 callout_stop(&fdc->sc_timo_ch); 1147 1148 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1149 (bp->b_flags & B_READ)); 1150 1151 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1152 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1153 #ifdef FD_DEBUG 1154 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1155 "read failed" : "write failed"); 1156 printf("blkno %llu nblks %d\n", 1157 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1158 #endif 1159 fdcretry(fdc); 1160 goto loop; 1161 } 1162 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1163 if (fdc->sc_errors) { 1164 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1165 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1166 printf("\n"); 1167 fdc->sc_errors = 0; 1168 } 1169 fd->sc_blkno += fd->sc_nblks; 1170 fd->sc_skip += fd->sc_nbytes; 1171 fd->sc_bcount -= fd->sc_nbytes; 1172 if (!finfo && fd->sc_bcount > 0) { 1173 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1174 goto doseek; 1175 } 1176 fdfinish(fd, bp, 0); 1177 goto loop; 1178 1179 case DORESET: 1180 /* try a reset, keep motor on */ 1181 fd_set_motor(fdc, 1); 1182 delay(100); 1183 fd_set_motor(fdc, 0); 1184 fdc->sc_state = RESETCOMPLETE; 1185 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1186 return 1; /* will return later */ 1187 1188 case RESETCOMPLETE: 1189 callout_stop(&fdc->sc_timo_ch); 1190 /* clear the controller output buffer */ 1191 for (i = 0; i < 4; i++) { 1192 out_fdc(iot, ioh, NE7CMD_SENSEI); 1193 (void) fdcresult(fdc); 1194 } 1195 1196 /* fall through */ 1197 case DORECAL: 1198 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1199 out_fdc(iot, ioh, fd->sc_drive); 1200 fdc->sc_state = RECALWAIT; 1201 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1202 return 1; /* will return later */ 1203 1204 case RECALWAIT: 1205 callout_stop(&fdc->sc_timo_ch); 1206 fdc->sc_state = RECALCOMPLETE; 1207 /* allow 1/30 second for heads to settle */ 1208 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1209 return 1; /* will return later */ 1210 1211 case RECALCOMPLETE: 1212 out_fdc(iot, ioh, NE7CMD_SENSEI); 1213 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1214 #ifdef FD_DEBUG 1215 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1216 #endif 1217 fdcretry(fdc); 1218 goto loop; 1219 } 1220 fd->sc_cylin = 0; 1221 goto doseek; 1222 1223 case MOTORWAIT: 1224 if (fd->sc_flags & FD_MOTOR_WAIT) 1225 return 1; /* time's not up yet */ 1226 goto doseek; 1227 1228 default: 1229 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1230 return 1; 1231 } 1232 #ifdef DIAGNOSTIC 1233 panic("fdcintr: impossible"); 1234 #endif 1235 #undef st0 1236 #undef cyl 1237 } 1238 1239 void 1240 fdcretry(fdc) 1241 struct fdc_softc *fdc; 1242 { 1243 char bits[64]; 1244 struct fd_softc *fd; 1245 struct buf *bp; 1246 1247 fd = TAILQ_FIRST(&fdc->sc_drives); 1248 bp = BUFQ_PEEK(fd->sc_q); 1249 1250 if (fd->sc_opts & FDOPT_NORETRY) 1251 goto fail; 1252 switch (fdc->sc_errors) { 1253 case 0: 1254 /* try again */ 1255 fdc->sc_state = DOSEEK; 1256 break; 1257 1258 case 1: case 2: case 3: 1259 /* didn't work; try recalibrating */ 1260 fdc->sc_state = DORECAL; 1261 break; 1262 1263 case 4: 1264 /* still no go; reset the bastard */ 1265 fdc->sc_state = DORESET; 1266 break; 1267 1268 default: 1269 fail: 1270 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1271 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1272 fd->sc_skip / FDC_BSIZE, 1273 (struct disklabel *)NULL); 1274 1275 printf(" (st0 %s", 1276 bitmask_snprintf(fdc->sc_status[0], 1277 NE7_ST0BITS, bits, 1278 sizeof(bits))); 1279 printf(" st1 %s", 1280 bitmask_snprintf(fdc->sc_status[1], 1281 NE7_ST1BITS, bits, 1282 sizeof(bits))); 1283 printf(" st2 %s", 1284 bitmask_snprintf(fdc->sc_status[2], 1285 NE7_ST2BITS, bits, 1286 sizeof(bits))); 1287 printf(" cyl %d head %d sec %d)\n", 1288 fdc->sc_status[3], 1289 fdc->sc_status[4], 1290 fdc->sc_status[5]); 1291 } 1292 1293 fdfinish(fd, bp, EIO); 1294 } 1295 fdc->sc_errors++; 1296 } 1297 1298 int 1299 fdioctl(dev, cmd, addr, flag, l) 1300 dev_t dev; 1301 u_long cmd; 1302 void *addr; 1303 int flag; 1304 struct lwp *l; 1305 { 1306 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1307 struct fdformat_parms *form_parms; 1308 struct fdformat_cmd *form_cmd; 1309 struct ne7_fd_formb *fd_formb; 1310 struct disklabel buffer; 1311 int error; 1312 unsigned int scratch; 1313 int il[FD_MAX_NSEC + 1]; 1314 register int i, j; 1315 #ifdef __HAVE_OLD_DISKLABEL 1316 struct disklabel newlabel; 1317 #endif 1318 1319 switch (cmd) { 1320 case DIOCGDINFO: 1321 #ifdef __HAVE_OLD_DISKLABEL 1322 case ODIOCGDINFO: 1323 #endif 1324 memset(&buffer, 0, sizeof(buffer)); 1325 1326 buffer.d_secpercyl = fd->sc_type->seccyl; 1327 buffer.d_type = DTYPE_FLOPPY; 1328 buffer.d_secsize = FDC_BSIZE; 1329 1330 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1331 return EINVAL; 1332 1333 #ifdef __HAVE_OLD_DISKLABEL 1334 if (cmd == ODIOCGDINFO) { 1335 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1336 return ENOTTY; 1337 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1338 } else 1339 #endif 1340 *(struct disklabel *)addr = buffer; 1341 return 0; 1342 1343 case DIOCWLABEL: 1344 if ((flag & FWRITE) == 0) 1345 return EBADF; 1346 /* XXX do something */ 1347 return 0; 1348 1349 case DIOCWDINFO: 1350 #ifdef __HAVE_OLD_DISKLABEL 1351 case ODIOCWDINFO: 1352 #endif 1353 { 1354 struct disklabel *lp; 1355 1356 if ((flag & FWRITE) == 0) 1357 return EBADF; 1358 #ifdef __HAVE_OLD_DISKLABEL 1359 if (cmd == ODIOCWDINFO) { 1360 memset(&newlabel, 0, sizeof newlabel); 1361 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1362 lp = &newlabel; 1363 } else 1364 #endif 1365 lp = (struct disklabel *)addr; 1366 1367 error = setdisklabel(&buffer, lp, 0, NULL); 1368 if (error) 1369 return error; 1370 1371 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1372 return error; 1373 } 1374 1375 case FDIOCGETFORMAT: 1376 form_parms = (struct fdformat_parms *)addr; 1377 form_parms->fdformat_version = FDFORMAT_VERSION; 1378 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1379 form_parms->ncyl = fd->sc_type->cyls; 1380 form_parms->nspt = fd->sc_type->sectrac; 1381 form_parms->ntrk = fd->sc_type->heads; 1382 form_parms->stepspercyl = fd->sc_type->step; 1383 form_parms->gaplen = fd->sc_type->gap2; 1384 form_parms->fillbyte = fd->sc_type->fillbyte; 1385 form_parms->interleave = fd->sc_type->interleave; 1386 switch (fd->sc_type->rate) { 1387 case FDC_500KBPS: 1388 form_parms->xfer_rate = 500 * 1024; 1389 break; 1390 case FDC_300KBPS: 1391 form_parms->xfer_rate = 300 * 1024; 1392 break; 1393 case FDC_250KBPS: 1394 form_parms->xfer_rate = 250 * 1024; 1395 break; 1396 default: 1397 return EINVAL; 1398 } 1399 return 0; 1400 1401 case FDIOCSETFORMAT: 1402 if((flag & FWRITE) == 0) 1403 return EBADF; /* must be opened for writing */ 1404 form_parms = (struct fdformat_parms *)addr; 1405 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1406 return EINVAL; /* wrong version of formatting prog */ 1407 1408 scratch = form_parms->nbps >> 7; 1409 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1410 scratch & ~(1 << (ffs(scratch)-1))) 1411 /* not a power-of-two multiple of 128 */ 1412 return EINVAL; 1413 1414 switch (form_parms->xfer_rate) { 1415 case 500 * 1024: 1416 fd->sc_type->rate = FDC_500KBPS; 1417 break; 1418 case 300 * 1024: 1419 fd->sc_type->rate = FDC_300KBPS; 1420 break; 1421 case 250 * 1024: 1422 fd->sc_type->rate = FDC_250KBPS; 1423 break; 1424 default: 1425 return EINVAL; 1426 } 1427 1428 if (form_parms->nspt > FD_MAX_NSEC || 1429 form_parms->fillbyte > 0xff || 1430 form_parms->interleave > 0xff) 1431 return EINVAL; 1432 fd->sc_type->sectrac = form_parms->nspt; 1433 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1434 return EINVAL; 1435 fd->sc_type->heads = form_parms->ntrk; 1436 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1437 fd->sc_type->secsize = ffs(scratch)-1; 1438 fd->sc_type->gap2 = form_parms->gaplen; 1439 fd->sc_type->cyls = form_parms->ncyl; 1440 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1441 form_parms->nbps / DEV_BSIZE; 1442 fd->sc_type->step = form_parms->stepspercyl; 1443 fd->sc_type->fillbyte = form_parms->fillbyte; 1444 fd->sc_type->interleave = form_parms->interleave; 1445 return 0; 1446 1447 case FDIOCFORMAT_TRACK: 1448 if((flag & FWRITE) == 0) 1449 return EBADF; /* must be opened for writing */ 1450 form_cmd = (struct fdformat_cmd *)addr; 1451 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1452 return EINVAL; /* wrong version of formatting prog */ 1453 1454 if (form_cmd->head >= fd->sc_type->heads || 1455 form_cmd->cylinder >= fd->sc_type->cyls) { 1456 return EINVAL; 1457 } 1458 1459 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1460 M_TEMP, M_NOWAIT); 1461 if (fd_formb == 0) 1462 return ENOMEM; 1463 1464 fd_formb->head = form_cmd->head; 1465 fd_formb->cyl = form_cmd->cylinder; 1466 fd_formb->transfer_rate = fd->sc_type->rate; 1467 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1468 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1469 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1470 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1471 1472 memset(il, 0, sizeof il); 1473 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1474 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1475 j++; 1476 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1477 j += fd->sc_type->interleave; 1478 } 1479 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1480 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1481 fd_formb->fd_formb_headno(i) = form_cmd->head; 1482 fd_formb->fd_formb_secno(i) = il[i+1]; 1483 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1484 } 1485 1486 error = fdformat(dev, fd_formb, l); 1487 free(fd_formb, M_TEMP); 1488 return error; 1489 1490 case FDIOCGETOPTS: /* get drive options */ 1491 *(int *)addr = fd->sc_opts; 1492 return 0; 1493 1494 case FDIOCSETOPTS: /* set drive options */ 1495 fd->sc_opts = *(int *)addr; 1496 return 0; 1497 1498 default: 1499 return ENOTTY; 1500 } 1501 1502 #ifdef DIAGNOSTIC 1503 panic("fdioctl: impossible"); 1504 #endif 1505 } 1506 1507 int 1508 fdformat(dev, finfo, l) 1509 dev_t dev; 1510 struct ne7_fd_formb *finfo; 1511 struct lwp *l; 1512 { 1513 int rv = 0; 1514 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1515 struct fd_type *type = fd->sc_type; 1516 struct buf *bp; 1517 1518 /* set up a buffer header for fdstrategy() */ 1519 bp = getiobuf_nowait(); 1520 if (bp == NULL) 1521 return ENOBUFS; 1522 1523 bp->b_vp = NULL; 1524 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1525 bp->b_proc = l->l_proc; 1526 bp->b_dev = dev; 1527 1528 /* 1529 * calculate a fake blkno, so fdstrategy() would initiate a 1530 * seek to the requested cylinder 1531 */ 1532 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1533 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1534 1535 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1536 bp->b_data = (void *)finfo; 1537 1538 #ifdef DEBUG 1539 printf("fdformat: blkno %" PRIx64 " count %x\n", 1540 bp->b_blkno, bp->b_bcount); 1541 #endif 1542 1543 /* now do the format */ 1544 fdstrategy(bp); 1545 1546 /* ...and wait for it to complete */ 1547 rv = biowait(bp); 1548 putiobuf(bp); 1549 return rv; 1550 } 1551 1552 /* 1553 * Mountroot hook: prompt the user to enter the root file system 1554 * floppy. 1555 */ 1556 void 1557 fd_mountroot_hook(struct device *dev) 1558 { 1559 int c; 1560 1561 printf("Insert filesystem floppy and press return."); 1562 cnpollc(1); 1563 for (;;) { 1564 c = cngetc(); 1565 if ((c == '\r') || (c == '\n')) { 1566 printf("\n"); 1567 break; 1568 } 1569 } 1570 cnpollc(0); 1571 } 1572 1573 static void 1574 fd_set_properties(struct fd_softc *fd) 1575 { 1576 prop_dictionary_t disk_info, odisk_info, geom; 1577 const struct fd_type *fdt; 1578 int secsize; 1579 1580 fdt = fd->sc_type; 1581 if (fdt == NULL) { 1582 fdt = fd->sc_deftype; 1583 if (fdt == NULL) 1584 return; 1585 } 1586 1587 disk_info = prop_dictionary_create(); 1588 1589 geom = prop_dictionary_create(); 1590 1591 prop_dictionary_set_uint64(geom, "sectors-per-unit", 1592 fdt->size); 1593 1594 switch (fdt->secsize) { 1595 case 2: 1596 secsize = 512; 1597 break; 1598 case 3: 1599 secsize = 1024; 1600 break; 1601 default: 1602 secsize = 0; 1603 } 1604 1605 prop_dictionary_set_uint32(geom, "sector-size", 1606 secsize); 1607 1608 prop_dictionary_set_uint16(geom, "sectors-per-track", 1609 fdt->sectrac); 1610 1611 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1612 fdt->heads); 1613 1614 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1615 fdt->cyls); 1616 1617 prop_dictionary_set(disk_info, "geometry", geom); 1618 prop_object_release(geom); 1619 1620 prop_dictionary_set(device_properties(&fd->sc_dev), 1621 "disk-info", disk_info); 1622 1623 /* 1624 * Don't release disk_info here; we keep a reference to it. 1625 * disk_detach() will release it when we go away. 1626 */ 1627 1628 odisk_info = fd->sc_dk.dk_info; 1629 fd->sc_dk.dk_info = disk_info; 1630 if (odisk_info) 1631 prop_object_release(odisk_info); 1632 } 1633
Indexes created Wed Oct 15 16:09:53 GMT 2025