fd.c revision 1.58.2.7
1 /* $NetBSD: fd.c,v 1.58.2.7 2008/02/04 09:23:26 yamt 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 1.58.2.7 2008/02/04 09:23:26 yamt 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 <sys/cpu.h> 135 #include <sys/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 <sys/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(device_t); 209 int fdprobe(device_t, struct cfdata *, void *); 210 void fdattach(device_t, device_t, 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(const 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(device_t, int, const char *); 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); 257 static 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(device_t); 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(void *aux, const char *fdc) 280 { 281 struct fdc_attach_args *fa = aux; 282 283 if (!fdc) 284 aprint_normal(" drive %d", fa->fa_drive); 285 return QUIET; 286 } 287 288 void 289 fdcattach(struct fdc_softc *fdc) 290 { 291 callout_init(&fdc->sc_timo_ch, 0); 292 callout_init(&fdc->sc_intr_ch, 0); 293 294 fdc->sc_state = DEVIDLE; 295 TAILQ_INIT(&fdc->sc_drives); 296 297 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 298 299 if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { 300 aprint_normal_dev(&fdc->sc_dev, "can't reserve drq %d\n", 301 fdc->sc_drq); 302 return; 303 } 304 305 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 306 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 307 aprint_normal_dev(&fdc->sc_dev, "can't set up ISA DMA map\n"); 308 return; 309 } 310 311 config_interrupts(&fdc->sc_dev, fdcfinishattach); 312 } 313 314 void 315 fdcfinishattach(device_t self) 316 { 317 struct fdc_softc *fdc = device_private(self); 318 bus_space_tag_t iot = fdc->sc_iot; 319 bus_space_handle_t ioh = fdc->sc_ioh; 320 struct fdc_attach_args fa; 321 #if defined(i386) 322 int type; 323 #endif 324 325 /* 326 * Reset the controller to get it into a known state. Not all 327 * probes necessarily need do this to discover the controller up 328 * front, so don't assume anything. 329 */ 330 331 bus_space_write_1(iot, ioh, fdout, 0); 332 delay(100); 333 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 334 335 /* see if it can handle a command */ 336 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 337 aprint_normal_dev(&fdc->sc_dev, "can't reset controller\n"); 338 return; 339 } 340 out_fdc(iot, ioh, 0xdf); 341 out_fdc(iot, ioh, 2); 342 343 #if defined(i386) 344 /* 345 * The NVRAM info only tells us about the first two disks on the 346 * `primary' floppy controller. 347 */ 348 /* XXX device_unit() abuse */ 349 if (device_unit(&fdc->sc_dev) == 0) 350 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 351 else 352 type = -1; 353 #endif /* i386 */ 354 355 /* physical limit: four drives per controller. */ 356 fdc->sc_state = PROBING; 357 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 358 if (fdc->sc_known) { 359 if (fdc->sc_present & (1 << fa.fa_drive)) { 360 fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; 361 config_found(&fdc->sc_dev, (void *)&fa, 362 fdprint); 363 } 364 } else { 365 #if defined(i386) 366 if (type >= 0 && fa.fa_drive < 2) 367 fa.fa_deftype = 368 fd_nvtotype(device_xname(&fdc->sc_dev), 369 type, fa.fa_drive); 370 else 371 fa.fa_deftype = NULL; /* unknown */ 372 #elif defined(atari) 373 /* 374 * Atari has a different ordening, defaults to 1.44 375 */ 376 fa.fa_deftype = &fd_types[2]; 377 #else 378 /* 379 * Default to 1.44MB on Alpha and BeBox. How do we tell 380 * on these platforms? 381 */ 382 fa.fa_deftype = &fd_types[0]; 383 #endif /* i386 */ 384 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 385 } 386 } 387 fdc->sc_state = DEVIDLE; 388 } 389 390 int 391 fdprobe(device_t parent, struct cfdata *match, void *aux) 392 { 393 struct fdc_softc *fdc = device_private(parent); 394 struct cfdata *cf = match; 395 struct fdc_attach_args *fa = aux; 396 int drive = fa->fa_drive; 397 bus_space_tag_t iot = fdc->sc_iot; 398 bus_space_handle_t ioh = fdc->sc_ioh; 399 int n; 400 int s; 401 402 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 403 cf->cf_loc[FDCCF_DRIVE] != drive) 404 return 0; 405 /* 406 * XXX 407 * This is to work around some odd interactions between this driver 408 * and SMC Ethernet cards. 409 */ 410 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 411 return 0; 412 413 /* Use PNP information if available */ 414 if (fdc->sc_known) 415 return 1; 416 417 s = splbio(); 418 /* toss any interrupt status */ 419 for (n = 0; n < 4; n++) { 420 out_fdc(iot, ioh, NE7CMD_SENSEI); 421 (void) fdcresult(fdc); 422 } 423 /* select drive and turn on motor */ 424 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 425 /* wait for motor to spin up */ 426 (void) tsleep(fdc, PWAIT, "fdprobe1", hz / 4); 427 out_fdc(iot, ioh, NE7CMD_RECAL); 428 out_fdc(iot, ioh, drive); 429 /* wait for recalibrate, up to 2s */ 430 if (tsleep(fdc, PWAIT, "fdprobe2", 2 * hz) != EWOULDBLOCK) { 431 #ifdef FD_DEBUG 432 /* XXX */ 433 printf("fdprobe: got intr\n"); 434 #endif 435 } 436 out_fdc(iot, ioh, NE7CMD_SENSEI); 437 n = fdcresult(fdc); 438 #ifdef FD_DEBUG 439 { 440 int i; 441 printf("fdprobe: status"); 442 for (i = 0; i < n; i++) 443 printf(" %x", fdc->sc_status[i]); 444 printf("\n"); 445 } 446 #endif 447 /* turn off motor */ 448 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 449 splx(s); 450 451 #if defined(bebox) /* XXX What is this about? --thorpej (at) NetBSD.org */ 452 if (n != 2 || (fdc->sc_status[1] != 0)) 453 return 0; 454 #else 455 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 456 return 0; 457 #endif /* bebox */ 458 459 return 1; 460 } 461 462 /* 463 * Controller is working, and drive responded. Attach it. 464 */ 465 void 466 fdattach(device_t parent, device_t self, void *aux) 467 { 468 struct fdc_softc *fdc = device_private(parent); 469 struct fd_softc *fd = device_private(self); 470 struct fdc_attach_args *fa = aux; 471 const struct fd_type *type = fa->fa_deftype; 472 int drive = fa->fa_drive; 473 474 callout_init(&fd->sc_motoron_ch, 0); 475 callout_init(&fd->sc_motoroff_ch, 0); 476 477 /* XXX Allow `flags' to override device type? */ 478 479 if (type) 480 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 481 type->cyls, type->heads, type->sectrac); 482 else 483 printf(": density unknown\n"); 484 485 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 486 fd->sc_cylin = -1; 487 fd->sc_drive = drive; 488 fd->sc_deftype = type; 489 fdc->sc_fd[drive] = fd; 490 491 /* 492 * Initialize and attach the disk structure. 493 */ 494 disk_init(&fd->sc_dk, device_xname(&fd->sc_dev), &fddkdriver); 495 disk_attach(&fd->sc_dk); 496 497 /* 498 * Establish a mountroot hook. 499 */ 500 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 501 502 /* Needed to power off if the motor is on when we halt. */ 503 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 504 505 #if NRND > 0 506 rnd_attach_source(&fd->rnd_source, device_xname(&fd->sc_dev), 507 RND_TYPE_DISK, 0); 508 #endif 509 510 fd_set_properties(fd); 511 } 512 513 #if defined(i386) 514 /* 515 * Translate nvram type into internal data structure. Return NULL for 516 * none/unknown/unusable. 517 */ 518 const struct fd_type * 519 fd_nvtotype(const char *fdc, int nvraminfo, int drive) 520 { 521 int type; 522 523 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 524 switch (type) { 525 case NVRAM_DISKETTE_NONE: 526 return NULL; 527 case NVRAM_DISKETTE_12M: 528 return &fd_types[1]; 529 case NVRAM_DISKETTE_TYPE5: 530 case NVRAM_DISKETTE_TYPE6: 531 /* XXX We really ought to handle 2.88MB format. */ 532 case NVRAM_DISKETTE_144M: 533 #if NMCA > 0 534 if (MCA_system) 535 return &mca_fd_types[0]; 536 else 537 #endif /* NMCA > 0 */ 538 return &fd_types[0]; 539 case NVRAM_DISKETTE_360K: 540 return &fd_types[3]; 541 case NVRAM_DISKETTE_720K: 542 #if NMCA > 0 543 if (MCA_system) 544 return &mca_fd_types[1]; 545 else 546 #endif /* NMCA > 0 */ 547 return &fd_types[4]; 548 default: 549 printf("%s: drive %d: unknown device type 0x%x\n", 550 fdc, drive, type); 551 return NULL; 552 } 553 } 554 #endif /* i386 */ 555 556 static const struct fd_type * 557 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 558 { 559 u_int type = FDTYPE(dev); 560 561 if (type > __arraycount(fd_types)) 562 return NULL; 563 return type ? &fd_types[type - 1] : fd->sc_deftype; 564 } 565 566 void 567 fdstrategy(struct buf *bp) 568 { 569 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 570 int sz; 571 int s; 572 573 /* Valid unit, controller, and request? */ 574 if (bp->b_blkno < 0 || 575 ((bp->b_bcount % FDC_BSIZE) != 0 && 576 (bp->b_flags & B_FORMAT) == 0)) { 577 bp->b_error = EINVAL; 578 goto done; 579 } 580 581 /* If it's a null transfer, return immediately. */ 582 if (bp->b_bcount == 0) 583 goto done; 584 585 sz = howmany(bp->b_bcount, FDC_BSIZE); 586 587 if (bp->b_blkno + sz > fd->sc_type->size) { 588 sz = fd->sc_type->size - bp->b_blkno; 589 if (sz == 0) { 590 /* If exactly at end of disk, return EOF. */ 591 goto done; 592 } 593 if (sz < 0) { 594 /* If past end of disk, return EINVAL. */ 595 bp->b_error = EINVAL; 596 goto done; 597 } 598 /* Otherwise, truncate request. */ 599 bp->b_bcount = sz << DEV_BSHIFT; 600 } 601 602 bp->b_rawblkno = bp->b_blkno; 603 bp->b_cylinder = 604 bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; 605 606 #ifdef FD_DEBUG 607 printf("fdstrategy: b_blkno %llu b_bcount %d blkno %llu cylin %d " 608 "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, 609 (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); 610 #endif 611 612 /* Queue transfer on drive, activate drive and controller if idle. */ 613 s = splbio(); 614 BUFQ_PUT(fd->sc_q, bp); 615 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 616 if (fd->sc_active == 0) 617 fdstart(fd); 618 #ifdef DIAGNOSTIC 619 else { 620 struct fdc_softc *fdc = 621 device_private(device_parent(&fd->sc_dev)); 622 if (fdc->sc_state == DEVIDLE) { 623 printf("fdstrategy: controller inactive\n"); 624 fdcstart(fdc); 625 } 626 } 627 #endif 628 splx(s); 629 return; 630 631 done: 632 /* Toss transfer; we're done early. */ 633 bp->b_resid = bp->b_bcount; 634 biodone(bp); 635 } 636 637 void 638 fdstart(struct fd_softc *fd) 639 { 640 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dev)); 641 int active = !TAILQ_EMPTY(&fdc->sc_drives); 642 643 /* Link into controller queue. */ 644 fd->sc_active = 1; 645 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 646 647 /* If controller not already active, start it. */ 648 if (!active) 649 fdcstart(fdc); 650 } 651 652 void 653 fdfinish(struct fd_softc *fd, struct buf *bp) 654 { 655 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dev)); 656 657 /* 658 * Move this drive to the end of the queue to give others a `fair' 659 * chance. We only force a switch if N operations are completed while 660 * another drive is waiting to be serviced, since there is a long motor 661 * startup delay whenever we switch. 662 */ 663 (void)BUFQ_GET(fd->sc_q); 664 if (TAILQ_NEXT(fd, sc_drivechain) && ++fd->sc_ops >= 8) { 665 fd->sc_ops = 0; 666 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 667 if (BUFQ_PEEK(fd->sc_q) != NULL) 668 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 669 else 670 fd->sc_active = 0; 671 } 672 bp->b_resid = fd->sc_bcount; 673 fd->sc_skip = 0; 674 675 #if NRND > 0 676 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 677 #endif 678 679 biodone(bp); 680 /* turn off motor 5s from now */ 681 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 682 fdc->sc_state = DEVIDLE; 683 } 684 685 int 686 fdread(dev_t dev, struct uio *uio, int flags) 687 { 688 689 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 690 } 691 692 int 693 fdwrite(dev_t dev, struct uio *uio, int flags) 694 { 695 696 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 697 } 698 699 void 700 fd_set_motor(struct fdc_softc *fdc, int reset) 701 { 702 struct fd_softc *fd; 703 u_char status; 704 int n; 705 706 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 707 status = fd->sc_drive; 708 else 709 status = 0; 710 if (!reset) 711 status |= FDO_FRST | FDO_FDMAEN; 712 for (n = 0; n < 4; n++) 713 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 714 status |= FDO_MOEN(n); 715 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 716 } 717 718 void 719 fd_motor_off(void *arg) 720 { 721 struct fd_softc *fd = arg; 722 struct fdc_softc *fdc; 723 int s; 724 725 fdc = device_private(device_parent(&fd->sc_dev)); 726 727 s = splbio(); 728 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 729 fd_set_motor(fdc, 0); 730 splx(s); 731 } 732 733 void 734 fd_motor_on(void *arg) 735 { 736 struct fd_softc *fd = arg; 737 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dev)); 738 int s; 739 740 s = splbio(); 741 fd->sc_flags &= ~FD_MOTOR_WAIT; 742 if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) 743 (void)fdcintr(fdc); 744 splx(s); 745 } 746 747 int 748 fdcresult(struct fdc_softc *fdc) 749 { 750 bus_space_tag_t iot = fdc->sc_iot; 751 bus_space_handle_t ioh = fdc->sc_ioh; 752 u_char i; 753 u_int j = 100000, 754 n = 0; 755 756 for (; j; j--) { 757 i = bus_space_read_1(iot, ioh, fdsts) & 758 (NE7_DIO | NE7_RQM | NE7_CB); 759 if (i == NE7_RQM) 760 return n; 761 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 762 if (n >= sizeof(fdc->sc_status)) { 763 log(LOG_ERR, "fdcresult: overrun\n"); 764 return -1; 765 } 766 fdc->sc_status[n++] = 767 bus_space_read_1(iot, ioh, fddata); 768 } 769 delay(10); 770 } 771 log(LOG_ERR, "fdcresult: timeout\n"); 772 return -1; 773 } 774 775 int 776 out_fdc(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) 777 { 778 u_char i; 779 u_int j = 100000; 780 781 for (; j; j--) { 782 i = bus_space_read_1(iot, ioh, fdsts) & 783 (NE7_DIO | NE7_RQM); 784 if (i == NE7_RQM) { 785 bus_space_write_1(iot, ioh, fddata, x); 786 return 0; 787 } 788 delay(10); 789 } 790 return -1; 791 } 792 793 int 794 fdopen(dev_t dev, int flags, int mode, struct lwp *l) 795 { 796 struct fd_softc *fd; 797 const struct fd_type *type; 798 799 fd = device_lookup(&fd_cd, FDUNIT(dev)); 800 if (fd == NULL) 801 return (ENXIO); 802 803 type = fd_dev_to_type(fd, dev); 804 if (type == NULL) 805 return ENXIO; 806 807 if ((fd->sc_flags & FD_OPEN) != 0 && 808 memcmp(fd->sc_type, type, sizeof(*type))) 809 return EBUSY; 810 811 fd->sc_type_copy = *type; 812 fd->sc_type = &fd->sc_type_copy; 813 fd->sc_cylin = -1; 814 fd->sc_flags |= FD_OPEN; 815 816 fd_set_properties(fd); 817 818 return 0; 819 } 820 821 int 822 fdclose(dev_t dev, int flags, int mode, struct lwp *l) 823 { 824 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 825 826 fd->sc_flags &= ~FD_OPEN; 827 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 828 return 0; 829 } 830 831 void 832 fdcstart(struct fdc_softc *fdc) 833 { 834 835 #ifdef DIAGNOSTIC 836 /* only got here if controller's drive queue was inactive; should 837 be in idle state */ 838 if (fdc->sc_state != DEVIDLE) { 839 printf("fdcstart: not idle\n"); 840 return; 841 } 842 #endif 843 (void) fdcintr(fdc); 844 } 845 846 void 847 fdcstatus(device_t dv, int n, const char *s) 848 { 849 struct fdc_softc *fdc = device_private(device_parent(dv)); 850 char bits[64]; 851 852 if (n == 0) { 853 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 854 (void) fdcresult(fdc); 855 n = 2; 856 } 857 858 aprint_normal_dev(dv, "%s", s); 859 860 switch (n) { 861 case 0: 862 printf("\n"); 863 break; 864 case 2: 865 printf(" (st0 %s cyl %d)\n", 866 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 867 bits, sizeof(bits)), fdc->sc_status[1]); 868 break; 869 case 7: 870 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 871 NE7_ST0BITS, bits, sizeof(bits))); 872 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 873 NE7_ST1BITS, bits, sizeof(bits))); 874 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 875 NE7_ST2BITS, bits, sizeof(bits))); 876 printf(" cyl %d head %d sec %d)\n", 877 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 878 break; 879 #ifdef DIAGNOSTIC 880 default: 881 printf("\nfdcstatus: weird size"); 882 break; 883 #endif 884 } 885 } 886 887 void 888 fdctimeout(void *arg) 889 { 890 struct fdc_softc *fdc = arg; 891 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 892 int s; 893 894 s = splbio(); 895 #ifdef DEBUG 896 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 897 #endif 898 fdcstatus(&fd->sc_dev, 0, "timeout"); 899 900 if (BUFQ_PEEK(fd->sc_q) != NULL) 901 fdc->sc_state++; 902 else 903 fdc->sc_state = DEVIDLE; 904 905 (void) fdcintr(fdc); 906 splx(s); 907 } 908 909 void 910 fdcpseudointr(void *arg) 911 { 912 int s; 913 914 /* Just ensure it has the right spl. */ 915 s = splbio(); 916 (void) fdcintr(arg); 917 splx(s); 918 } 919 920 int 921 fdcintr(void *arg) 922 { 923 struct fdc_softc *fdc = arg; 924 #define st0 fdc->sc_status[0] 925 #define cyl fdc->sc_status[1] 926 struct fd_softc *fd; 927 struct buf *bp; 928 bus_space_tag_t iot = fdc->sc_iot; 929 bus_space_handle_t ioh = fdc->sc_ioh; 930 int read, head, sec, i, nblks; 931 struct fd_type *type; 932 struct ne7_fd_formb *finfo = NULL; 933 934 if (fdc->sc_state == PROBING) { 935 #ifdef DEBUG 936 printf("fdcintr: got probe interrupt\n"); 937 #endif 938 wakeup(fdc); 939 return 1; 940 } 941 942 loop: 943 /* Is there a drive for the controller to do a transfer with? */ 944 fd = TAILQ_FIRST(&fdc->sc_drives); 945 if (fd == NULL) { 946 fdc->sc_state = DEVIDLE; 947 return 1; 948 } 949 950 /* Is there a transfer to this drive? If not, deactivate drive. */ 951 bp = BUFQ_PEEK(fd->sc_q); 952 if (bp == NULL) { 953 fd->sc_ops = 0; 954 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 955 fd->sc_active = 0; 956 goto loop; 957 } 958 959 if (bp->b_flags & B_FORMAT) 960 finfo = (struct ne7_fd_formb *)bp->b_data; 961 962 switch (fdc->sc_state) { 963 case DEVIDLE: 964 fdc->sc_errors = 0; 965 fd->sc_skip = 0; 966 fd->sc_bcount = bp->b_bcount; 967 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 968 callout_stop(&fd->sc_motoroff_ch); 969 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 970 fdc->sc_state = MOTORWAIT; 971 return 1; 972 } 973 if ((fd->sc_flags & FD_MOTOR) == 0) { 974 /* Turn on the motor, being careful about pairing. */ 975 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 976 if (ofd && ofd->sc_flags & FD_MOTOR) { 977 callout_stop(&ofd->sc_motoroff_ch); 978 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 979 } 980 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 981 fd_set_motor(fdc, 0); 982 fdc->sc_state = MOTORWAIT; 983 /* Allow .25s for motor to stabilize. */ 984 callout_reset(&fd->sc_motoron_ch, hz / 4, 985 fd_motor_on, fd); 986 return 1; 987 } 988 /* Make sure the right drive is selected. */ 989 fd_set_motor(fdc, 0); 990 991 /* fall through */ 992 case DOSEEK: 993 doseek: 994 if (fd->sc_cylin == bp->b_cylinder) 995 goto doio; 996 997 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 998 out_fdc(iot, ioh, fd->sc_type->steprate); 999 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1000 1001 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1002 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1003 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1004 1005 fd->sc_cylin = -1; 1006 fdc->sc_state = SEEKWAIT; 1007 1008 iostat_seek(fd->sc_dk.dk_stats); 1009 disk_busy(&fd->sc_dk); 1010 1011 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1012 return 1; 1013 1014 case DOIO: 1015 doio: 1016 type = fd->sc_type; 1017 if (finfo) 1018 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1019 (char *)finfo; 1020 sec = fd->sc_blkno % type->seccyl; 1021 nblks = type->seccyl - sec; 1022 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1023 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1024 fd->sc_nblks = nblks; 1025 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1026 head = sec / type->sectrac; 1027 sec -= head * type->sectrac; 1028 #ifdef DIAGNOSTIC 1029 { 1030 int block; 1031 block = (fd->sc_cylin * type->heads + head) 1032 * type->sectrac + sec; 1033 if (block != fd->sc_blkno) { 1034 printf("fdcintr: block %d != blkno " 1035 "%" PRId64 "\n", block, fd->sc_blkno); 1036 #ifdef DDB 1037 Debugger(); 1038 #endif 1039 } 1040 } 1041 #endif 1042 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1043 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1044 (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, 1045 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1046 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1047 #ifdef FD_DEBUG 1048 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1049 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1050 head, sec, nblks); 1051 #endif 1052 if (finfo) { 1053 /* formatting */ 1054 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1055 fdc->sc_errors = 4; 1056 fdcretry(fdc); 1057 goto loop; 1058 } 1059 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1060 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1061 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1062 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1063 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1064 } else { 1065 if (read) 1066 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1067 else 1068 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1069 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1070 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1071 out_fdc(iot, ioh, head); 1072 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1073 out_fdc(iot, ioh, type->secsize);/* sector size */ 1074 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1075 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1076 out_fdc(iot, ioh, type->datalen);/* data length */ 1077 } 1078 fdc->sc_state = IOCOMPLETE; 1079 1080 disk_busy(&fd->sc_dk); 1081 1082 /* allow 2 seconds for operation */ 1083 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1084 return 1; /* will return later */ 1085 1086 case SEEKWAIT: 1087 callout_stop(&fdc->sc_timo_ch); 1088 fdc->sc_state = SEEKCOMPLETE; 1089 /* allow 1/50 second for heads to settle */ 1090 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1091 return 1; 1092 1093 case SEEKCOMPLETE: 1094 /* no data on seek */ 1095 disk_unbusy(&fd->sc_dk, 0, 0); 1096 1097 /* Make sure seek really happened. */ 1098 out_fdc(iot, ioh, NE7CMD_SENSEI); 1099 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1100 cyl != bp->b_cylinder * fd->sc_type->step) { 1101 #ifdef FD_DEBUG 1102 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1103 #endif 1104 fdcretry(fdc); 1105 goto loop; 1106 } 1107 fd->sc_cylin = bp->b_cylinder; 1108 goto doio; 1109 1110 case IOTIMEDOUT: 1111 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1112 case SEEKTIMEDOUT: 1113 case RECALTIMEDOUT: 1114 case RESETTIMEDOUT: 1115 fdcretry(fdc); 1116 goto loop; 1117 1118 case IOCOMPLETE: /* IO DONE, post-analyze */ 1119 callout_stop(&fdc->sc_timo_ch); 1120 1121 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1122 (bp->b_flags & B_READ)); 1123 1124 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1125 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1126 #ifdef FD_DEBUG 1127 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1128 "read failed" : "write failed"); 1129 printf("blkno %llu nblks %d\n", 1130 (unsigned long long)fd->sc_blkno, fd->sc_nblks); 1131 #endif 1132 fdcretry(fdc); 1133 goto loop; 1134 } 1135 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1136 if (fdc->sc_errors) { 1137 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1138 fd->sc_skip / FDC_BSIZE, NULL); 1139 printf("\n"); 1140 fdc->sc_errors = 0; 1141 } 1142 fd->sc_blkno += fd->sc_nblks; 1143 fd->sc_skip += fd->sc_nbytes; 1144 fd->sc_bcount -= fd->sc_nbytes; 1145 if (!finfo && fd->sc_bcount > 0) { 1146 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1147 goto doseek; 1148 } 1149 fdfinish(fd, bp); 1150 goto loop; 1151 1152 case DORESET: 1153 /* try a reset, keep motor on */ 1154 fd_set_motor(fdc, 1); 1155 delay(100); 1156 fd_set_motor(fdc, 0); 1157 fdc->sc_state = RESETCOMPLETE; 1158 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1159 return 1; /* will return later */ 1160 1161 case RESETCOMPLETE: 1162 callout_stop(&fdc->sc_timo_ch); 1163 /* clear the controller output buffer */ 1164 for (i = 0; i < 4; i++) { 1165 out_fdc(iot, ioh, NE7CMD_SENSEI); 1166 (void) fdcresult(fdc); 1167 } 1168 1169 /* fall through */ 1170 case DORECAL: 1171 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1172 out_fdc(iot, ioh, fd->sc_drive); 1173 fdc->sc_state = RECALWAIT; 1174 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1175 return 1; /* will return later */ 1176 1177 case RECALWAIT: 1178 callout_stop(&fdc->sc_timo_ch); 1179 fdc->sc_state = RECALCOMPLETE; 1180 /* allow 1/30 second for heads to settle */ 1181 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1182 return 1; /* will return later */ 1183 1184 case RECALCOMPLETE: 1185 out_fdc(iot, ioh, NE7CMD_SENSEI); 1186 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1187 #ifdef FD_DEBUG 1188 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1189 #endif 1190 fdcretry(fdc); 1191 goto loop; 1192 } 1193 fd->sc_cylin = 0; 1194 goto doseek; 1195 1196 case MOTORWAIT: 1197 if (fd->sc_flags & FD_MOTOR_WAIT) 1198 return 1; /* time's not up yet */ 1199 goto doseek; 1200 1201 default: 1202 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1203 return 1; 1204 } 1205 #ifdef DIAGNOSTIC 1206 panic("fdcintr: impossible"); 1207 #endif 1208 #undef st0 1209 #undef cyl 1210 } 1211 1212 void 1213 fdcretry(struct fdc_softc *fdc) 1214 { 1215 char bits[64]; 1216 struct fd_softc *fd; 1217 struct buf *bp; 1218 1219 fd = TAILQ_FIRST(&fdc->sc_drives); 1220 bp = BUFQ_PEEK(fd->sc_q); 1221 1222 if (fd->sc_opts & FDOPT_NORETRY) 1223 goto fail; 1224 switch (fdc->sc_errors) { 1225 case 0: 1226 /* try again */ 1227 fdc->sc_state = DOSEEK; 1228 break; 1229 1230 case 1: case 2: case 3: 1231 /* didn't work; try recalibrating */ 1232 fdc->sc_state = DORECAL; 1233 break; 1234 1235 case 4: 1236 /* still no go; reset the bastard */ 1237 fdc->sc_state = DORESET; 1238 break; 1239 1240 default: 1241 fail: 1242 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1243 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1244 fd->sc_skip / FDC_BSIZE, NULL); 1245 1246 printf(" (st0 %s", 1247 bitmask_snprintf(fdc->sc_status[0], 1248 NE7_ST0BITS, bits, 1249 sizeof(bits))); 1250 printf(" st1 %s", 1251 bitmask_snprintf(fdc->sc_status[1], 1252 NE7_ST1BITS, bits, 1253 sizeof(bits))); 1254 printf(" st2 %s", 1255 bitmask_snprintf(fdc->sc_status[2], 1256 NE7_ST2BITS, bits, 1257 sizeof(bits))); 1258 printf(" cyl %d head %d sec %d)\n", 1259 fdc->sc_status[3], 1260 fdc->sc_status[4], 1261 fdc->sc_status[5]); 1262 } 1263 1264 bp->b_error = EIO; 1265 fdfinish(fd, bp); 1266 } 1267 fdc->sc_errors++; 1268 } 1269 1270 int 1271 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1272 { 1273 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1274 struct fdformat_parms *form_parms; 1275 struct fdformat_cmd *form_cmd; 1276 struct ne7_fd_formb *fd_formb; 1277 struct disklabel buffer; 1278 int error; 1279 unsigned int scratch; 1280 int il[FD_MAX_NSEC + 1]; 1281 int i, j; 1282 #ifdef __HAVE_OLD_DISKLABEL 1283 struct disklabel newlabel; 1284 #endif 1285 1286 switch (cmd) { 1287 case DIOCGDINFO: 1288 #ifdef __HAVE_OLD_DISKLABEL 1289 case ODIOCGDINFO: 1290 #endif 1291 memset(&buffer, 0, sizeof(buffer)); 1292 1293 buffer.d_secpercyl = fd->sc_type->seccyl; 1294 buffer.d_type = DTYPE_FLOPPY; 1295 buffer.d_secsize = FDC_BSIZE; 1296 1297 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1298 return EINVAL; 1299 1300 #ifdef __HAVE_OLD_DISKLABEL 1301 if (cmd == ODIOCGDINFO) { 1302 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1303 return ENOTTY; 1304 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1305 } else 1306 #endif 1307 *(struct disklabel *)addr = buffer; 1308 return 0; 1309 1310 case DIOCWLABEL: 1311 if ((flag & FWRITE) == 0) 1312 return EBADF; 1313 /* XXX do something */ 1314 return 0; 1315 1316 case DIOCWDINFO: 1317 #ifdef __HAVE_OLD_DISKLABEL 1318 case ODIOCWDINFO: 1319 #endif 1320 { 1321 struct disklabel *lp; 1322 1323 if ((flag & FWRITE) == 0) 1324 return EBADF; 1325 #ifdef __HAVE_OLD_DISKLABEL 1326 if (cmd == ODIOCWDINFO) { 1327 memset(&newlabel, 0, sizeof newlabel); 1328 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1329 lp = &newlabel; 1330 } else 1331 #endif 1332 lp = (struct disklabel *)addr; 1333 1334 error = setdisklabel(&buffer, lp, 0, NULL); 1335 if (error) 1336 return error; 1337 1338 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1339 return error; 1340 } 1341 1342 case FDIOCGETFORMAT: 1343 form_parms = (struct fdformat_parms *)addr; 1344 form_parms->fdformat_version = FDFORMAT_VERSION; 1345 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1346 form_parms->ncyl = fd->sc_type->cyls; 1347 form_parms->nspt = fd->sc_type->sectrac; 1348 form_parms->ntrk = fd->sc_type->heads; 1349 form_parms->stepspercyl = fd->sc_type->step; 1350 form_parms->gaplen = fd->sc_type->gap2; 1351 form_parms->fillbyte = fd->sc_type->fillbyte; 1352 form_parms->interleave = fd->sc_type->interleave; 1353 switch (fd->sc_type->rate) { 1354 case FDC_500KBPS: 1355 form_parms->xfer_rate = 500 * 1024; 1356 break; 1357 case FDC_300KBPS: 1358 form_parms->xfer_rate = 300 * 1024; 1359 break; 1360 case FDC_250KBPS: 1361 form_parms->xfer_rate = 250 * 1024; 1362 break; 1363 default: 1364 return EINVAL; 1365 } 1366 return 0; 1367 1368 case FDIOCSETFORMAT: 1369 if((flag & FWRITE) == 0) 1370 return EBADF; /* must be opened for writing */ 1371 form_parms = (struct fdformat_parms *)addr; 1372 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1373 return EINVAL; /* wrong version of formatting prog */ 1374 1375 scratch = form_parms->nbps >> 7; 1376 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1377 scratch & ~(1 << (ffs(scratch)-1))) 1378 /* not a power-of-two multiple of 128 */ 1379 return EINVAL; 1380 1381 switch (form_parms->xfer_rate) { 1382 case 500 * 1024: 1383 fd->sc_type->rate = FDC_500KBPS; 1384 break; 1385 case 300 * 1024: 1386 fd->sc_type->rate = FDC_300KBPS; 1387 break; 1388 case 250 * 1024: 1389 fd->sc_type->rate = FDC_250KBPS; 1390 break; 1391 default: 1392 return EINVAL; 1393 } 1394 1395 if (form_parms->nspt > FD_MAX_NSEC || 1396 form_parms->fillbyte > 0xff || 1397 form_parms->interleave > 0xff) 1398 return EINVAL; 1399 fd->sc_type->sectrac = form_parms->nspt; 1400 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1401 return EINVAL; 1402 fd->sc_type->heads = form_parms->ntrk; 1403 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1404 fd->sc_type->secsize = ffs(scratch)-1; 1405 fd->sc_type->gap2 = form_parms->gaplen; 1406 fd->sc_type->cyls = form_parms->ncyl; 1407 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1408 form_parms->nbps / DEV_BSIZE; 1409 fd->sc_type->step = form_parms->stepspercyl; 1410 fd->sc_type->fillbyte = form_parms->fillbyte; 1411 fd->sc_type->interleave = form_parms->interleave; 1412 return 0; 1413 1414 case FDIOCFORMAT_TRACK: 1415 if((flag & FWRITE) == 0) 1416 return EBADF; /* must be opened for writing */ 1417 form_cmd = (struct fdformat_cmd *)addr; 1418 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1419 return EINVAL; /* wrong version of formatting prog */ 1420 1421 if (form_cmd->head >= fd->sc_type->heads || 1422 form_cmd->cylinder >= fd->sc_type->cyls) { 1423 return EINVAL; 1424 } 1425 1426 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1427 M_TEMP, M_NOWAIT); 1428 if (fd_formb == 0) 1429 return ENOMEM; 1430 1431 fd_formb->head = form_cmd->head; 1432 fd_formb->cyl = form_cmd->cylinder; 1433 fd_formb->transfer_rate = fd->sc_type->rate; 1434 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1435 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1436 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1437 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1438 1439 memset(il, 0, sizeof il); 1440 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1441 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1442 j++; 1443 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1444 j += fd->sc_type->interleave; 1445 } 1446 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1447 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1448 fd_formb->fd_formb_headno(i) = form_cmd->head; 1449 fd_formb->fd_formb_secno(i) = il[i+1]; 1450 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1451 } 1452 1453 error = fdformat(dev, fd_formb, l); 1454 free(fd_formb, M_TEMP); 1455 return error; 1456 1457 case FDIOCGETOPTS: /* get drive options */ 1458 *(int *)addr = fd->sc_opts; 1459 return 0; 1460 1461 case FDIOCSETOPTS: /* set drive options */ 1462 fd->sc_opts = *(int *)addr; 1463 return 0; 1464 1465 default: 1466 return ENOTTY; 1467 } 1468 1469 #ifdef DIAGNOSTIC 1470 panic("fdioctl: impossible"); 1471 #endif 1472 } 1473 1474 int 1475 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct lwp *l) 1476 { 1477 int rv = 0; 1478 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1479 struct fd_type *type = fd->sc_type; 1480 struct buf *bp; 1481 1482 /* set up a buffer header for fdstrategy() */ 1483 bp = getiobuf(NULL, false); 1484 if (bp == NULL) 1485 return ENOBUFS; 1486 1487 bp->b_cflags = BC_BUSY; 1488 bp->b_flags = B_PHYS | B_FORMAT; 1489 bp->b_proc = l->l_proc; 1490 bp->b_dev = dev; 1491 1492 /* 1493 * calculate a fake blkno, so fdstrategy() would initiate a 1494 * seek to the requested cylinder 1495 */ 1496 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1497 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1498 1499 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1500 bp->b_data = (void *)finfo; 1501 1502 #ifdef DEBUG 1503 printf("fdformat: blkno %" PRIx64 " count %x\n", 1504 bp->b_blkno, bp->b_bcount); 1505 #endif 1506 1507 /* now do the format */ 1508 fdstrategy(bp); 1509 1510 /* ...and wait for it to complete */ 1511 rv = biowait(bp); 1512 putiobuf(bp); 1513 return rv; 1514 } 1515 1516 /* 1517 * Mountroot hook: prompt the user to enter the root file system 1518 * floppy. 1519 */ 1520 void 1521 fd_mountroot_hook(device_t dev) 1522 { 1523 int c; 1524 1525 printf("Insert filesystem floppy and press return."); 1526 cnpollc(1); 1527 for (;;) { 1528 c = cngetc(); 1529 if ((c == '\r') || (c == '\n')) { 1530 printf("\n"); 1531 break; 1532 } 1533 } 1534 cnpollc(0); 1535 } 1536 1537 static void 1538 fd_set_properties(struct fd_softc *fd) 1539 { 1540 prop_dictionary_t disk_info, odisk_info, geom; 1541 const struct fd_type *fdt; 1542 int secsize; 1543 1544 fdt = fd->sc_type; 1545 if (fdt == NULL) { 1546 fdt = fd->sc_deftype; 1547 if (fdt == NULL) 1548 return; 1549 } 1550 1551 disk_info = prop_dictionary_create(); 1552 1553 geom = prop_dictionary_create(); 1554 1555 prop_dictionary_set_uint64(geom, "sectors-per-unit", 1556 fdt->size); 1557 1558 switch (fdt->secsize) { 1559 case 2: 1560 secsize = 512; 1561 break; 1562 case 3: 1563 secsize = 1024; 1564 break; 1565 default: 1566 secsize = 0; 1567 } 1568 1569 prop_dictionary_set_uint32(geom, "sector-size", 1570 secsize); 1571 1572 prop_dictionary_set_uint16(geom, "sectors-per-track", 1573 fdt->sectrac); 1574 1575 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 1576 fdt->heads); 1577 1578 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 1579 fdt->cyls); 1580 1581 prop_dictionary_set(disk_info, "geometry", geom); 1582 prop_object_release(geom); 1583 1584 prop_dictionary_set(device_properties(&fd->sc_dev), 1585 "disk-info", disk_info); 1586 1587 /* 1588 * Don't release disk_info here; we keep a reference to it. 1589 * disk_detach() will release it when we go away. 1590 */ 1591 1592 odisk_info = fd->sc_dk.dk_info; 1593 fd->sc_dk.dk_info = disk_info; 1594 if (odisk_info) 1595 prop_object_release(odisk_info); 1596 } 1597
Indexes created Wed Oct 15 03:09:54 GMT 2025