1 /* $NetBSD: fd.c,v 1.22 2002/03/10 08:55:40 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)fd.c 7.4 (Berkeley) 5/25/91 75 */ 76 77 /* 78 * Floppy formatting facilities merged from FreeBSD fd.c driver: 79 * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp 80 * which carries the same copyright/redistribution notice as shown above with 81 * the addition of the following statement before the "Redistribution and 82 * use ..." clause: 83 * 84 * Copyright (c) 1993, 1994 by 85 * jc@irbs.UUCP (John Capo) 86 * vak@zebub.msk.su (Serge Vakulenko) 87 * ache@astral.msk.su (Andrew A. Chernov) 88 * 89 * Copyright (c) 1993, 1994, 1995 by 90 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 91 * dufault@hda.com (Peter Dufault) 92 */ 93 94 #include <sys/cdefs.h> 95 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.22 2002/03/10 08:55:40 jdolecek Exp $"); 96 97 #include "rnd.h" 98 #include "opt_ddb.h" 99 100 /* 101 * XXX This driver should be properly MI'd some day, but this allows us 102 * XXX to eliminate a lot of code duplication for now. 103 */ 104 #if !defined(alpha) && !defined(algor) && !defined(atari) && \ 105 !defined(bebox) && !defined(i386) && !defined(prep) && \ 106 !defined(sandpoint) && !defined(x86_64) 107 #error platform not supported by this driver, yet 108 #endif 109 110 #include <sys/param.h> 111 #include <sys/systm.h> 112 #include <sys/callout.h> 113 #include <sys/kernel.h> 114 #include <sys/file.h> 115 #include <sys/ioctl.h> 116 #include <sys/device.h> 117 #include <sys/disklabel.h> 118 #include <sys/dkstat.h> 119 #include <sys/disk.h> 120 #include <sys/buf.h> 121 #include <sys/malloc.h> 122 #include <sys/uio.h> 123 #include <sys/syslog.h> 124 #include <sys/queue.h> 125 #include <sys/proc.h> 126 #include <sys/fdio.h> 127 #include <sys/conf.h> 128 #if NRND > 0 129 #include <sys/rnd.h> 130 #endif 131 132 #include <uvm/uvm_extern.h> 133 134 #include <dev/cons.h> 135 136 #include <machine/cpu.h> 137 #include <machine/bus.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 #define fd_ca fdisa_ca 148 #endif /* atari */ 149 150 #include <machine/intr.h> 151 152 #include <dev/isa/isavar.h> 153 #include <dev/isa/isadmavar.h> 154 155 #include <dev/isa/fdreg.h> 156 #include <dev/isa/fdcvar.h> 157 158 #if defined(i386) 159 160 #include <dev/ic/mc146818reg.h> /* for NVRAM access */ 161 #include <i386/isa/nvram.h> 162 163 #include "mca.h" 164 #if NMCA > 0 165 #include <machine/mca_machdep.h> /* for MCA_system */ 166 #endif 167 168 #endif /* i386 */ 169 170 bdev_decl(fd); 171 cdev_decl(fd); 172 173 #define FDUNIT(dev) (minor(dev) / 8) 174 #define FDTYPE(dev) (minor(dev) % 8) 175 176 /* XXX misuse a flag to identify format operation */ 177 #define B_FORMAT B_XXX 178 179 /* controller driver configuration */ 180 int fdprint __P((void *, const char *)); 181 182 /* 183 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 184 * we tell them apart. 185 */ 186 struct fd_type { 187 int sectrac; /* sectors per track */ 188 int heads; /* number of heads */ 189 int seccyl; /* sectors per cylinder */ 190 int secsize; /* size code for sectors */ 191 int datalen; /* data len when secsize = 0 */ 192 int steprate; /* step rate and head unload time */ 193 int gap1; /* gap len between sectors */ 194 int gap2; /* formatting gap */ 195 int cyls; /* total num of cylinders */ 196 int size; /* size of disk in sectors */ 197 int step; /* steps per cylinder */ 198 int rate; /* transfer speed code */ 199 u_char fillbyte; /* format fill byte */ 200 u_char interleave; /* interleave factor (formatting) */ 201 const char *name; 202 }; 203 204 #if NMCA > 0 205 /* MCA - specific entries */ 206 const struct fd_type mca_fd_types[] = { 207 { 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 */ 208 { 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 */ 209 }; 210 #endif /* NMCA > 0 */ 211 212 /* The order of entries in the following table is important -- BEWARE! */ 213 214 #if defined(atari) 215 const struct fd_type fd_types[] = { 216 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 217 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 218 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 219 }; 220 #else 221 const struct fd_type fd_types[] = { 222 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 223 { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ 224 { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ 226 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette */ 227 { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ 228 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 229 }; 230 #endif /* defined(atari) */ 231 232 /* software state, per disk (with up to 4 disks per ctlr) */ 233 struct fd_softc { 234 struct device sc_dev; 235 struct disk sc_dk; 236 237 const struct fd_type *sc_deftype; /* default type descriptor */ 238 struct fd_type *sc_type; /* current type descriptor */ 239 struct fd_type sc_type_copy; /* copy for fiddling when formatting */ 240 241 struct callout sc_motoron_ch; 242 struct callout sc_motoroff_ch; 243 244 daddr_t sc_blkno; /* starting block number */ 245 int sc_bcount; /* byte count left */ 246 int sc_opts; /* user-set options */ 247 int sc_skip; /* bytes already transferred */ 248 int sc_nblks; /* number of blocks currently transferring */ 249 int sc_nbytes; /* number of bytes currently transferring */ 250 251 int sc_drive; /* physical unit number */ 252 int sc_flags; 253 #define FD_OPEN 0x01 /* it's open */ 254 #define FD_MOTOR 0x02 /* motor should be on */ 255 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 256 int sc_cylin; /* where we think the head is */ 257 258 void *sc_sdhook; /* saved shutdown hook for drive. */ 259 260 TAILQ_ENTRY(fd_softc) sc_drivechain; 261 int sc_ops; /* I/O ops since last switch */ 262 struct buf_queue sc_q; /* pending I/O requests */ 263 int sc_active; /* number of active I/O operations */ 264 265 #if NRND > 0 266 rndsource_element_t rnd_source; 267 #endif 268 }; 269 270 int fdprobe __P((struct device *, struct cfdata *, void *)); 271 void fdattach __P((struct device *, struct device *, void *)); 272 273 extern struct cfdriver fd_cd; 274 275 struct cfattach fd_ca = { 276 sizeof(struct fd_softc), fdprobe, fdattach, 277 }; 278 279 void fdgetdisklabel __P((struct fd_softc *)); 280 int fd_get_parms __P((struct fd_softc *)); 281 void fdstrategy __P((struct buf *)); 282 void fdstart __P((struct fd_softc *)); 283 284 struct dkdriver fddkdriver = { fdstrategy }; 285 286 #if defined(i386) 287 const struct fd_type *fd_nvtotype __P((char *, int, int)); 288 #endif /* i386 */ 289 void fd_set_motor __P((struct fdc_softc *fdc, int reset)); 290 void fd_motor_off __P((void *arg)); 291 void fd_motor_on __P((void *arg)); 292 int fdcresult __P((struct fdc_softc *fdc)); 293 void fdcstart __P((struct fdc_softc *fdc)); 294 void fdcstatus __P((struct device *dv, int n, char *s)); 295 void fdctimeout __P((void *arg)); 296 void fdcpseudointr __P((void *arg)); 297 void fdcretry __P((struct fdc_softc *fdc)); 298 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 299 __inline const struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 300 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 301 302 void fd_mountroot_hook __P((struct device *)); 303 304 /* 305 * Arguments passed between fdcattach and fdprobe. 306 */ 307 struct fdc_attach_args { 308 int fa_drive; 309 const struct fd_type *fa_deftype; 310 }; 311 312 /* 313 * Print the location of a disk drive (called just before attaching the 314 * the drive). If `fdc' is not NULL, the drive was found but was not 315 * in the system config file; print the drive name as well. 316 * Return QUIET (config_find ignores this if the device was configured) to 317 * avoid printing `fdN not configured' messages. 318 */ 319 int 320 fdprint(aux, fdc) 321 void *aux; 322 const char *fdc; 323 { 324 register struct fdc_attach_args *fa = aux; 325 326 if (!fdc) 327 printf(" drive %d", fa->fa_drive); 328 return QUIET; 329 } 330 331 void 332 fdcattach(fdc) 333 struct fdc_softc *fdc; 334 { 335 struct fdc_attach_args fa; 336 bus_space_tag_t iot; 337 bus_space_handle_t ioh; 338 #if defined(i386) 339 int type; 340 #endif 341 342 iot = fdc->sc_iot; 343 ioh = fdc->sc_ioh; 344 callout_init(&fdc->sc_timo_ch); 345 callout_init(&fdc->sc_intr_ch); 346 347 fdc->sc_state = DEVIDLE; 348 TAILQ_INIT(&fdc->sc_drives); 349 350 fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); 351 352 if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, 353 BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 354 printf("%s: can't set up ISA DMA map\n", 355 fdc->sc_dev.dv_xname); 356 return; 357 } 358 359 /* 360 * Reset the controller to get it into a known state. Not all 361 * probes necessarily need do this to discover the controller up 362 * front, so don't assume anything. 363 */ 364 365 bus_space_write_1(iot, ioh, fdout, 0); 366 delay(100); 367 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 368 369 /* see if it can handle a command */ 370 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { 371 printf ("%s: can't reset controller\n", fdc->sc_dev.dv_xname); 372 return; 373 } 374 out_fdc(iot, ioh, 0xdf); 375 out_fdc(iot, ioh, 2); 376 377 #if defined(i386) 378 /* 379 * The NVRAM info only tells us about the first two disks on the 380 * `primary' floppy controller. 381 */ 382 if (fdc->sc_dev.dv_unit == 0) 383 type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ 384 else 385 type = -1; 386 #endif /* i386 */ 387 388 /* physical limit: four drives per controller. */ 389 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 390 #if defined(i386) 391 if (type >= 0 && fa.fa_drive < 2) 392 fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, 393 type, fa.fa_drive); 394 else 395 fa.fa_deftype = NULL; /* unknown */ 396 #elif defined(atari) 397 /* 398 * Atari has a different ordening, defaults to 1.44 399 */ 400 fa.fa_deftype = &fd_types[2]; 401 #else 402 /* 403 * Default to 1.44MB on Alpha and BeBox. How do we tell 404 * on these platforms? 405 */ 406 fa.fa_deftype = &fd_types[0]; 407 #endif /* i386 */ 408 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 409 } 410 } 411 412 int 413 fdprobe(parent, match, aux) 414 struct device *parent; 415 struct cfdata *match; 416 void *aux; 417 { 418 struct fdc_softc *fdc = (void *)parent; 419 struct cfdata *cf = match; 420 struct fdc_attach_args *fa = aux; 421 int drive = fa->fa_drive; 422 bus_space_tag_t iot = fdc->sc_iot; 423 bus_space_handle_t ioh = fdc->sc_ioh; 424 int n; 425 426 if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && 427 cf->cf_loc[FDCCF_DRIVE] != drive) 428 return 0; 429 /* 430 * XXX 431 * This is to work around some odd interactions between this driver 432 * and SMC Ethernet cards. 433 */ 434 if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) 435 return 0; 436 437 /* select drive and turn on motor */ 438 bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); 439 /* wait for motor to spin up */ 440 delay(250000); 441 out_fdc(iot, ioh, NE7CMD_RECAL); 442 out_fdc(iot, ioh, drive); 443 /* wait for recalibrate */ 444 delay(2000000); 445 out_fdc(iot, ioh, NE7CMD_SENSEI); 446 n = fdcresult(fdc); 447 #ifdef FD_DEBUG 448 { 449 int i; 450 printf("fdprobe: status"); 451 for (i = 0; i < n; i++) 452 printf(" %x", fdc->sc_status[i]); 453 printf("\n"); 454 } 455 #endif 456 /* turn off motor */ 457 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 458 459 #if defined(bebox) /* XXX What is this about? --thorpej@netbsd.org */ 460 if (n != 2 || (fdc->sc_status[1] != 0)) 461 return 0; 462 #else 463 if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) 464 return 0; 465 #endif /* bebox */ 466 467 return 1; 468 } 469 470 /* 471 * Controller is working, and drive responded. Attach it. 472 */ 473 void 474 fdattach(parent, self, aux) 475 struct device *parent, *self; 476 void *aux; 477 { 478 struct fdc_softc *fdc = (void *)parent; 479 struct fd_softc *fd = (void *)self; 480 struct fdc_attach_args *fa = aux; 481 const struct fd_type *type = fa->fa_deftype; 482 int drive = fa->fa_drive; 483 484 callout_init(&fd->sc_motoron_ch); 485 callout_init(&fd->sc_motoroff_ch); 486 487 /* XXX Allow `flags' to override device type? */ 488 489 if (type) 490 printf(": %s, %d cyl, %d head, %d sec\n", type->name, 491 type->cyls, type->heads, type->sectrac); 492 else 493 printf(": density unknown\n"); 494 495 BUFQ_INIT(&fd->sc_q); 496 fd->sc_cylin = -1; 497 fd->sc_drive = drive; 498 fd->sc_deftype = type; 499 fdc->sc_fd[drive] = fd; 500 501 /* 502 * Initialize and attach the disk structure. 503 */ 504 fd->sc_dk.dk_name = fd->sc_dev.dv_xname; 505 fd->sc_dk.dk_driver = &fddkdriver; 506 disk_attach(&fd->sc_dk); 507 508 /* 509 * Establish a mountroot hook. 510 */ 511 mountroothook_establish(fd_mountroot_hook, &fd->sc_dev); 512 513 /* Needed to power off if the motor is on when we halt. */ 514 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 515 516 #if NRND > 0 517 rnd_attach_source(&fd->rnd_source, fd->sc_dev.dv_xname, 518 RND_TYPE_DISK, 0); 519 #endif 520 } 521 522 #if defined(i386) 523 /* 524 * Translate nvram type into internal data structure. Return NULL for 525 * none/unknown/unusable. 526 */ 527 const struct fd_type * 528 fd_nvtotype(fdc, nvraminfo, drive) 529 char *fdc; 530 int nvraminfo, drive; 531 { 532 int type; 533 534 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 535 switch (type) { 536 case NVRAM_DISKETTE_NONE: 537 return NULL; 538 case NVRAM_DISKETTE_12M: 539 return &fd_types[1]; 540 case NVRAM_DISKETTE_TYPE5: 541 case NVRAM_DISKETTE_TYPE6: 542 /* XXX We really ought to handle 2.88MB format. */ 543 case NVRAM_DISKETTE_144M: 544 #if NMCA > 0 545 if (MCA_system) 546 return &mca_fd_types[0]; 547 else 548 #endif /* NMCA > 0 */ 549 return &fd_types[0]; 550 case NVRAM_DISKETTE_360K: 551 return &fd_types[3]; 552 case NVRAM_DISKETTE_720K: 553 #if NMCA > 0 554 if (MCA_system) 555 return &mca_fd_types[1]; 556 else 557 #endif /* NMCA > 0 */ 558 return &fd_types[4]; 559 default: 560 printf("%s: drive %d: unknown device type 0x%x\n", 561 fdc, drive, type); 562 return NULL; 563 } 564 } 565 #endif /* i386 */ 566 567 __inline const struct fd_type * 568 fd_dev_to_type(fd, dev) 569 struct fd_softc *fd; 570 dev_t dev; 571 { 572 int type = FDTYPE(dev); 573 574 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 575 return NULL; 576 return type ? &fd_types[type - 1] : fd->sc_deftype; 577 } 578 579 void 580 fdstrategy(bp) 581 register struct buf *bp; /* IO operation to perform */ 582 { 583 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(bp->b_dev)); 584 int sz; 585 int s; 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 bp->b_error = EINVAL; 592 goto bad; 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 bp->b_error = EINVAL; 610 goto bad; 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 %d b_bcount %ld blkno %d cylin %ld sz %d\n", 622 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); 623 #endif 624 625 /* Queue transfer on drive, activate drive and controller if idle. */ 626 s = splbio(); 627 disksort_cylinder(&fd->sc_q, bp); 628 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 629 if (fd->sc_active == 0) 630 fdstart(fd); 631 #ifdef DIAGNOSTIC 632 else { 633 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 634 if (fdc->sc_state == DEVIDLE) { 635 printf("fdstrategy: controller inactive\n"); 636 fdcstart(fdc); 637 } 638 } 639 #endif 640 splx(s); 641 return; 642 643 bad: 644 bp->b_flags |= B_ERROR; 645 done: 646 /* Toss transfer; we're done early. */ 647 bp->b_resid = bp->b_bcount; 648 biodone(bp); 649 } 650 651 void 652 fdstart(fd) 653 struct fd_softc *fd; 654 { 655 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 656 int active = !TAILQ_EMPTY(&fdc->sc_drives); 657 658 /* Link into controller queue. */ 659 fd->sc_active = 1; 660 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 661 662 /* If controller not already active, start it. */ 663 if (!active) 664 fdcstart(fdc); 665 } 666 667 void 668 fdfinish(fd, bp) 669 struct fd_softc *fd; 670 struct buf *bp; 671 { 672 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 673 674 /* 675 * Move this drive to the end of the queue to give others a `fair' 676 * chance. We only force a switch if N operations are completed while 677 * another drive is waiting to be serviced, since there is a long motor 678 * startup delay whenever we switch. 679 */ 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_NEXT(bp) != NULL) 684 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 685 else 686 fd->sc_active = 0; 687 } 688 bp->b_resid = fd->sc_bcount; 689 fd->sc_skip = 0; 690 BUFQ_REMOVE(&fd->sc_q, bp); 691 692 #if NRND > 0 693 rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 694 #endif 695 696 biodone(bp); 697 /* turn off motor 5s from now */ 698 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 699 fdc->sc_state = DEVIDLE; 700 } 701 702 int 703 fdread(dev, uio, flags) 704 dev_t dev; 705 struct uio *uio; 706 int flags; 707 { 708 709 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 710 } 711 712 int 713 fdwrite(dev, uio, flags) 714 dev_t dev; 715 struct uio *uio; 716 int flags; 717 { 718 719 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 720 } 721 722 void 723 fd_set_motor(fdc, reset) 724 struct fdc_softc *fdc; 725 int reset; 726 { 727 struct fd_softc *fd; 728 u_char status; 729 int n; 730 731 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 732 status = fd->sc_drive; 733 else 734 status = 0; 735 if (!reset) 736 status |= FDO_FRST | FDO_FDMAEN; 737 for (n = 0; n < 4; n++) 738 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 739 status |= FDO_MOEN(n); 740 bus_space_write_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); 741 } 742 743 void 744 fd_motor_off(arg) 745 void *arg; 746 { 747 struct fd_softc *fd = arg; 748 int s; 749 750 s = splbio(); 751 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 752 fd_set_motor((struct fdc_softc *)fd->sc_dev.dv_parent, 0); 753 splx(s); 754 } 755 756 void 757 fd_motor_on(arg) 758 void *arg; 759 { 760 struct fd_softc *fd = arg; 761 struct fdc_softc *fdc = (void *)fd->sc_dev.dv_parent; 762 int s; 763 764 s = splbio(); 765 fd->sc_flags &= ~FD_MOTOR_WAIT; 766 if ((TAILQ_FIRST(&fdc->sc_drives) == fd) &&(fdc->sc_state == MOTORWAIT)) 767 (void) fdcintr(fdc); 768 splx(s); 769 } 770 771 int 772 fdcresult(fdc) 773 struct fdc_softc *fdc; 774 { 775 bus_space_tag_t iot = fdc->sc_iot; 776 bus_space_handle_t ioh = fdc->sc_ioh; 777 u_char i; 778 int j = 100000, 779 n = 0; 780 781 for (; j; j--) { 782 i = bus_space_read_1(iot, ioh, fdsts) & 783 (NE7_DIO | NE7_RQM | NE7_CB); 784 if (i == NE7_RQM) 785 return n; 786 if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { 787 if (n >= sizeof(fdc->sc_status)) { 788 log(LOG_ERR, "fdcresult: overrun\n"); 789 return -1; 790 } 791 fdc->sc_status[n++] = 792 bus_space_read_1(iot, ioh, fddata); 793 } 794 delay(10); 795 } 796 log(LOG_ERR, "fdcresult: timeout\n"); 797 return -1; 798 } 799 800 int 801 out_fdc(iot, ioh, x) 802 bus_space_tag_t iot; 803 bus_space_handle_t ioh; 804 u_char x; 805 { 806 int i = 100000; 807 808 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_DIO) && i-- > 0); 809 if (i <= 0) 810 return -1; 811 while ((bus_space_read_1(iot, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0); 812 if (i <= 0) 813 return -1; 814 bus_space_write_1(iot, ioh, fddata, x); 815 return 0; 816 } 817 818 int 819 fdopen(dev, flags, mode, p) 820 dev_t dev; 821 int flags; 822 int mode; 823 struct proc *p; 824 { 825 struct fd_softc *fd; 826 const struct fd_type *type; 827 828 fd = device_lookup(&fd_cd, FDUNIT(dev)); 829 if (fd == NULL) 830 return (ENXIO); 831 832 type = fd_dev_to_type(fd, dev); 833 if (type == NULL) 834 return ENXIO; 835 836 if ((fd->sc_flags & FD_OPEN) != 0 && 837 memcmp(fd->sc_type, type, sizeof(*type))) 838 return EBUSY; 839 840 fd->sc_type_copy = *type; 841 fd->sc_type = &fd->sc_type_copy; 842 fd->sc_cylin = -1; 843 fd->sc_flags |= FD_OPEN; 844 845 return 0; 846 } 847 848 int 849 fdclose(dev, flags, mode, p) 850 dev_t dev; 851 int flags; 852 int mode; 853 struct proc *p; 854 { 855 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 856 857 fd->sc_flags &= ~FD_OPEN; 858 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 859 return 0; 860 } 861 862 void 863 fdcstart(fdc) 864 struct fdc_softc *fdc; 865 { 866 867 #ifdef DIAGNOSTIC 868 /* only got here if controller's drive queue was inactive; should 869 be in idle state */ 870 if (fdc->sc_state != DEVIDLE) { 871 printf("fdcstart: not idle\n"); 872 return; 873 } 874 #endif 875 (void) fdcintr(fdc); 876 } 877 878 void 879 fdcstatus(dv, n, s) 880 struct device *dv; 881 int n; 882 char *s; 883 { 884 struct fdc_softc *fdc = (void *)dv->dv_parent; 885 char bits[64]; 886 887 if (n == 0) { 888 out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); 889 (void) fdcresult(fdc); 890 n = 2; 891 } 892 893 printf("%s: %s", dv->dv_xname, s); 894 895 switch (n) { 896 case 0: 897 printf("\n"); 898 break; 899 case 2: 900 printf(" (st0 %s cyl %d)\n", 901 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 902 bits, sizeof(bits)), fdc->sc_status[1]); 903 break; 904 case 7: 905 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 906 NE7_ST0BITS, bits, sizeof(bits))); 907 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 908 NE7_ST1BITS, bits, sizeof(bits))); 909 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 910 NE7_ST2BITS, bits, sizeof(bits))); 911 printf(" cyl %d head %d sec %d)\n", 912 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 913 break; 914 #ifdef DIAGNOSTIC 915 default: 916 printf("\nfdcstatus: weird size"); 917 break; 918 #endif 919 } 920 } 921 922 void 923 fdctimeout(arg) 924 void *arg; 925 { 926 struct fdc_softc *fdc = arg; 927 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 928 int s; 929 930 s = splbio(); 931 #ifdef DEBUG 932 log(LOG_ERR, "fdctimeout: state %d\n", fdc->sc_state); 933 #endif 934 fdcstatus(&fd->sc_dev, 0, "timeout"); 935 936 if (BUFQ_FIRST(&fd->sc_q) != NULL) 937 fdc->sc_state++; 938 else 939 fdc->sc_state = DEVIDLE; 940 941 (void) fdcintr(fdc); 942 splx(s); 943 } 944 945 void 946 fdcpseudointr(arg) 947 void *arg; 948 { 949 int s; 950 951 /* Just ensure it has the right spl. */ 952 s = splbio(); 953 (void) fdcintr(arg); 954 splx(s); 955 } 956 957 int 958 fdcintr(arg) 959 void *arg; 960 { 961 struct fdc_softc *fdc = arg; 962 #define st0 fdc->sc_status[0] 963 #define cyl fdc->sc_status[1] 964 struct fd_softc *fd; 965 struct buf *bp; 966 bus_space_tag_t iot = fdc->sc_iot; 967 bus_space_handle_t ioh = fdc->sc_ioh; 968 int read, head, sec, i, nblks; 969 struct fd_type *type; 970 struct ne7_fd_formb *finfo = NULL; 971 972 loop: 973 /* Is there a drive for the controller to do a transfer with? */ 974 fd = TAILQ_FIRST(&fdc->sc_drives); 975 if (fd == NULL) { 976 fdc->sc_state = DEVIDLE; 977 return 1; 978 } 979 980 /* Is there a transfer to this drive? If not, deactivate drive. */ 981 bp = BUFQ_FIRST(&fd->sc_q); 982 if (bp == NULL) { 983 fd->sc_ops = 0; 984 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 985 fd->sc_active = 0; 986 goto loop; 987 } 988 989 if (bp->b_flags & B_FORMAT) 990 finfo = (struct ne7_fd_formb *)bp->b_data; 991 992 switch (fdc->sc_state) { 993 case DEVIDLE: 994 fdc->sc_errors = 0; 995 fd->sc_skip = 0; 996 fd->sc_bcount = bp->b_bcount; 997 fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); 998 callout_stop(&fd->sc_motoroff_ch); 999 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1000 fdc->sc_state = MOTORWAIT; 1001 return 1; 1002 } 1003 if ((fd->sc_flags & FD_MOTOR) == 0) { 1004 /* Turn on the motor, being careful about pairing. */ 1005 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1006 if (ofd && ofd->sc_flags & FD_MOTOR) { 1007 callout_stop(&ofd->sc_motoroff_ch); 1008 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1009 } 1010 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1011 fd_set_motor(fdc, 0); 1012 fdc->sc_state = MOTORWAIT; 1013 /* Allow .25s for motor to stabilize. */ 1014 callout_reset(&fd->sc_motoron_ch, hz / 4, 1015 fd_motor_on, fd); 1016 return 1; 1017 } 1018 /* Make sure the right drive is selected. */ 1019 fd_set_motor(fdc, 0); 1020 1021 /* fall through */ 1022 case DOSEEK: 1023 doseek: 1024 if (fd->sc_cylin == bp->b_cylinder) 1025 goto doio; 1026 1027 out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ 1028 out_fdc(iot, ioh, fd->sc_type->steprate); 1029 out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ 1030 1031 out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ 1032 out_fdc(iot, ioh, fd->sc_drive); /* drive number */ 1033 out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); 1034 1035 fd->sc_cylin = -1; 1036 fdc->sc_state = SEEKWAIT; 1037 1038 fd->sc_dk.dk_seek++; 1039 disk_busy(&fd->sc_dk); 1040 1041 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1042 return 1; 1043 1044 case DOIO: 1045 doio: 1046 type = fd->sc_type; 1047 if (finfo) 1048 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1049 (char *)finfo; 1050 sec = fd->sc_blkno % type->seccyl; 1051 nblks = type->seccyl - sec; 1052 nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); 1053 nblks = min(nblks, fdc->sc_maxiosize / FDC_BSIZE); 1054 fd->sc_nblks = nblks; 1055 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; 1056 head = sec / type->sectrac; 1057 sec -= head * type->sectrac; 1058 #ifdef DIAGNOSTIC 1059 { 1060 int block; 1061 block = (fd->sc_cylin * type->heads + head) 1062 * type->sectrac + sec; 1063 if (block != fd->sc_blkno) { 1064 printf("fdcintr: block %d != blkno %d\n", 1065 block, fd->sc_blkno); 1066 #ifdef DDB 1067 Debugger(); 1068 #endif 1069 } 1070 } 1071 #endif 1072 read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; 1073 isa_dmastart(fdc->sc_ic, fdc->sc_drq, 1074 bp->b_data + fd->sc_skip, fd->sc_nbytes, 1075 NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); 1076 bus_space_write_1(iot, fdc->sc_fdctlioh, 0, type->rate); 1077 #ifdef FD_DEBUG 1078 printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", 1079 read ? "read" : "write", fd->sc_drive, fd->sc_cylin, 1080 head, sec, nblks); 1081 #endif 1082 if (finfo) { 1083 /* formatting */ 1084 if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { 1085 fdc->sc_errors = 4; 1086 fdcretry(fdc); 1087 goto loop; 1088 } 1089 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1090 out_fdc(iot, ioh, finfo->fd_formb_secshift); 1091 out_fdc(iot, ioh, finfo->fd_formb_nsecs); 1092 out_fdc(iot, ioh, finfo->fd_formb_gaplen); 1093 out_fdc(iot, ioh, finfo->fd_formb_fillbyte); 1094 } else { 1095 if (read) 1096 out_fdc(iot, ioh, NE7CMD_READ); /* READ */ 1097 else 1098 out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ 1099 out_fdc(iot, ioh, (head << 2) | fd->sc_drive); 1100 out_fdc(iot, ioh, fd->sc_cylin); /* track */ 1101 out_fdc(iot, ioh, head); 1102 out_fdc(iot, ioh, sec + 1); /* sector +1 */ 1103 out_fdc(iot, ioh, type->secsize);/* sector size */ 1104 out_fdc(iot, ioh, type->sectrac);/* sectors/track */ 1105 out_fdc(iot, ioh, type->gap1); /* gap1 size */ 1106 out_fdc(iot, ioh, type->datalen);/* data length */ 1107 } 1108 fdc->sc_state = IOCOMPLETE; 1109 1110 disk_busy(&fd->sc_dk); 1111 1112 /* allow 2 seconds for operation */ 1113 callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); 1114 return 1; /* will return later */ 1115 1116 case SEEKWAIT: 1117 callout_stop(&fdc->sc_timo_ch); 1118 fdc->sc_state = SEEKCOMPLETE; 1119 /* allow 1/50 second for heads to settle */ 1120 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); 1121 return 1; 1122 1123 case SEEKCOMPLETE: 1124 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1125 1126 /* Make sure seek really happened. */ 1127 out_fdc(iot, ioh, NE7CMD_SENSEI); 1128 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || 1129 cyl != bp->b_cylinder * fd->sc_type->step) { 1130 #ifdef FD_DEBUG 1131 fdcstatus(&fd->sc_dev, 2, "seek failed"); 1132 #endif 1133 fdcretry(fdc); 1134 goto loop; 1135 } 1136 fd->sc_cylin = bp->b_cylinder; 1137 goto doio; 1138 1139 case IOTIMEDOUT: 1140 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1141 case SEEKTIMEDOUT: 1142 case RECALTIMEDOUT: 1143 case RESETTIMEDOUT: 1144 fdcretry(fdc); 1145 goto loop; 1146 1147 case IOCOMPLETE: /* IO DONE, post-analyze */ 1148 callout_stop(&fdc->sc_timo_ch); 1149 1150 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1151 1152 if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { 1153 isa_dmaabort(fdc->sc_ic, fdc->sc_drq); 1154 #ifdef FD_DEBUG 1155 fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? 1156 "read failed" : "write failed"); 1157 printf("blkno %d nblks %d\n", 1158 fd->sc_blkno, fd->sc_nblks); 1159 #endif 1160 fdcretry(fdc); 1161 goto loop; 1162 } 1163 isa_dmadone(fdc->sc_ic, fdc->sc_drq); 1164 if (fdc->sc_errors) { 1165 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, 1166 fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); 1167 printf("\n"); 1168 fdc->sc_errors = 0; 1169 } 1170 fd->sc_blkno += fd->sc_nblks; 1171 fd->sc_skip += fd->sc_nbytes; 1172 fd->sc_bcount -= fd->sc_nbytes; 1173 if (!finfo && fd->sc_bcount > 0) { 1174 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1175 goto doseek; 1176 } 1177 fdfinish(fd, bp); 1178 goto loop; 1179 1180 case DORESET: 1181 /* try a reset, keep motor on */ 1182 fd_set_motor(fdc, 1); 1183 delay(100); 1184 fd_set_motor(fdc, 0); 1185 fdc->sc_state = RESETCOMPLETE; 1186 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1187 return 1; /* will return later */ 1188 1189 case RESETCOMPLETE: 1190 callout_stop(&fdc->sc_timo_ch); 1191 /* clear the controller output buffer */ 1192 for (i = 0; i < 4; i++) { 1193 out_fdc(iot, ioh, NE7CMD_SENSEI); 1194 (void) fdcresult(fdc); 1195 } 1196 1197 /* fall through */ 1198 case DORECAL: 1199 out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ 1200 out_fdc(iot, ioh, fd->sc_drive); 1201 fdc->sc_state = RECALWAIT; 1202 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1203 return 1; /* will return later */ 1204 1205 case RECALWAIT: 1206 callout_stop(&fdc->sc_timo_ch); 1207 fdc->sc_state = RECALCOMPLETE; 1208 /* allow 1/30 second for heads to settle */ 1209 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); 1210 return 1; /* will return later */ 1211 1212 case RECALCOMPLETE: 1213 out_fdc(iot, ioh, NE7CMD_SENSEI); 1214 if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1215 #ifdef FD_DEBUG 1216 fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); 1217 #endif 1218 fdcretry(fdc); 1219 goto loop; 1220 } 1221 fd->sc_cylin = 0; 1222 goto doseek; 1223 1224 case MOTORWAIT: 1225 if (fd->sc_flags & FD_MOTOR_WAIT) 1226 return 1; /* time's not up yet */ 1227 goto doseek; 1228 1229 default: 1230 fdcstatus(&fd->sc_dev, 0, "stray interrupt"); 1231 return 1; 1232 } 1233 #ifdef DIAGNOSTIC 1234 panic("fdcintr: impossible"); 1235 #endif 1236 #undef st0 1237 #undef cyl 1238 } 1239 1240 void 1241 fdcretry(fdc) 1242 struct fdc_softc *fdc; 1243 { 1244 char bits[64]; 1245 struct fd_softc *fd; 1246 struct buf *bp; 1247 1248 fd = TAILQ_FIRST(&fdc->sc_drives); 1249 bp = BUFQ_FIRST(&fd->sc_q); 1250 1251 if (fd->sc_opts & FDOPT_NORETRY) 1252 goto fail; 1253 switch (fdc->sc_errors) { 1254 case 0: 1255 /* try again */ 1256 fdc->sc_state = DOSEEK; 1257 break; 1258 1259 case 1: case 2: case 3: 1260 /* didn't work; try recalibrating */ 1261 fdc->sc_state = DORECAL; 1262 break; 1263 1264 case 4: 1265 /* still no go; reset the bastard */ 1266 fdc->sc_state = DORESET; 1267 break; 1268 1269 default: 1270 fail: 1271 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1272 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1273 fd->sc_skip / FDC_BSIZE, 1274 (struct disklabel *)NULL); 1275 1276 printf(" (st0 %s", 1277 bitmask_snprintf(fdc->sc_status[0], 1278 NE7_ST0BITS, bits, 1279 sizeof(bits))); 1280 printf(" st1 %s", 1281 bitmask_snprintf(fdc->sc_status[1], 1282 NE7_ST1BITS, bits, 1283 sizeof(bits))); 1284 printf(" st2 %s", 1285 bitmask_snprintf(fdc->sc_status[2], 1286 NE7_ST2BITS, bits, 1287 sizeof(bits))); 1288 printf(" cyl %d head %d sec %d)\n", 1289 fdc->sc_status[3], 1290 fdc->sc_status[4], 1291 fdc->sc_status[5]); 1292 } 1293 1294 bp->b_flags |= B_ERROR; 1295 bp->b_error = EIO; 1296 fdfinish(fd, bp); 1297 } 1298 fdc->sc_errors++; 1299 } 1300 1301 int 1302 fdsize(dev) 1303 dev_t dev; 1304 { 1305 1306 /* Swapping to floppies would not make sense. */ 1307 return -1; 1308 } 1309 1310 int 1311 fddump(dev, blkno, va, size) 1312 dev_t dev; 1313 daddr_t blkno; 1314 caddr_t va; 1315 size_t size; 1316 { 1317 1318 /* Not implemented. */ 1319 return ENXIO; 1320 } 1321 1322 int 1323 fdioctl(dev, cmd, addr, flag, p) 1324 dev_t dev; 1325 u_long cmd; 1326 caddr_t addr; 1327 int flag; 1328 struct proc *p; 1329 { 1330 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1331 struct fdformat_parms *form_parms; 1332 struct fdformat_cmd *form_cmd; 1333 struct ne7_fd_formb *fd_formb; 1334 struct disklabel buffer; 1335 int error; 1336 unsigned int scratch; 1337 int il[FD_MAX_NSEC + 1]; 1338 register int i, j; 1339 #ifdef __HAVE_OLD_DISKLABEL 1340 struct disklabel newlabel; 1341 #endif 1342 1343 switch (cmd) { 1344 case DIOCGDINFO: 1345 #ifdef __HAVE_OLD_DISKLABEL 1346 case ODIOCGDINFO: 1347 #endif 1348 memset(&buffer, 0, sizeof(buffer)); 1349 1350 buffer.d_secpercyl = fd->sc_type->seccyl; 1351 buffer.d_type = DTYPE_FLOPPY; 1352 buffer.d_secsize = FDC_BSIZE; 1353 1354 if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) 1355 return EINVAL; 1356 1357 #ifdef __HAVE_OLD_DISKLABEL 1358 if (cmd == ODIOCGDINFO) { 1359 if (buffer.d_npartitions > OLDMAXPARTITIONS) 1360 return ENOTTY; 1361 memcpy(addr, &buffer, sizeof (struct olddisklabel)); 1362 } else 1363 #endif 1364 *(struct disklabel *)addr = buffer; 1365 return 0; 1366 1367 case DIOCWLABEL: 1368 if ((flag & FWRITE) == 0) 1369 return EBADF; 1370 /* XXX do something */ 1371 return 0; 1372 1373 case DIOCWDINFO: 1374 #ifdef __HAVE_OLD_DISKLABEL 1375 case ODIOCWDINFO: 1376 #endif 1377 { 1378 struct disklabel *lp; 1379 1380 if ((flag & FWRITE) == 0) 1381 return EBADF; 1382 #ifdef __HAVE_OLD_DISKLABEL 1383 if (cmd == ODIOCWDINFO) { 1384 memset(&newlabel, 0, sizeof newlabel); 1385 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1386 lp = &newlabel; 1387 } else 1388 #endif 1389 lp = (struct disklabel *)addr; 1390 1391 error = setdisklabel(&buffer, lp, 0, NULL); 1392 if (error) 1393 return error; 1394 1395 error = writedisklabel(dev, fdstrategy, &buffer, NULL); 1396 return error; 1397 } 1398 1399 case FDIOCGETFORMAT: 1400 form_parms = (struct fdformat_parms *)addr; 1401 form_parms->fdformat_version = FDFORMAT_VERSION; 1402 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1403 form_parms->ncyl = fd->sc_type->cyls; 1404 form_parms->nspt = fd->sc_type->sectrac; 1405 form_parms->ntrk = fd->sc_type->heads; 1406 form_parms->stepspercyl = fd->sc_type->step; 1407 form_parms->gaplen = fd->sc_type->gap2; 1408 form_parms->fillbyte = fd->sc_type->fillbyte; 1409 form_parms->interleave = fd->sc_type->interleave; 1410 switch (fd->sc_type->rate) { 1411 case FDC_500KBPS: 1412 form_parms->xfer_rate = 500 * 1024; 1413 break; 1414 case FDC_300KBPS: 1415 form_parms->xfer_rate = 300 * 1024; 1416 break; 1417 case FDC_250KBPS: 1418 form_parms->xfer_rate = 250 * 1024; 1419 break; 1420 default: 1421 return EINVAL; 1422 } 1423 return 0; 1424 1425 case FDIOCSETFORMAT: 1426 if((flag & FWRITE) == 0) 1427 return EBADF; /* must be opened for writing */ 1428 form_parms = (struct fdformat_parms *)addr; 1429 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1430 return EINVAL; /* wrong version of formatting prog */ 1431 1432 scratch = form_parms->nbps >> 7; 1433 if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || 1434 scratch & ~(1 << (ffs(scratch)-1))) 1435 /* not a power-of-two multiple of 128 */ 1436 return EINVAL; 1437 1438 switch (form_parms->xfer_rate) { 1439 case 500 * 1024: 1440 fd->sc_type->rate = FDC_500KBPS; 1441 break; 1442 case 300 * 1024: 1443 fd->sc_type->rate = FDC_300KBPS; 1444 break; 1445 case 250 * 1024: 1446 fd->sc_type->rate = FDC_250KBPS; 1447 break; 1448 default: 1449 return EINVAL; 1450 } 1451 1452 if (form_parms->nspt > FD_MAX_NSEC || 1453 form_parms->fillbyte > 0xff || 1454 form_parms->interleave > 0xff) 1455 return EINVAL; 1456 fd->sc_type->sectrac = form_parms->nspt; 1457 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1458 return EINVAL; 1459 fd->sc_type->heads = form_parms->ntrk; 1460 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1461 fd->sc_type->secsize = ffs(scratch)-1; 1462 fd->sc_type->gap2 = form_parms->gaplen; 1463 fd->sc_type->cyls = form_parms->ncyl; 1464 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1465 form_parms->nbps / DEV_BSIZE; 1466 fd->sc_type->step = form_parms->stepspercyl; 1467 fd->sc_type->fillbyte = form_parms->fillbyte; 1468 fd->sc_type->interleave = form_parms->interleave; 1469 return 0; 1470 1471 case FDIOCFORMAT_TRACK: 1472 if((flag & FWRITE) == 0) 1473 return EBADF; /* must be opened for writing */ 1474 form_cmd = (struct fdformat_cmd *)addr; 1475 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 1476 return EINVAL; /* wrong version of formatting prog */ 1477 1478 if (form_cmd->head >= fd->sc_type->heads || 1479 form_cmd->cylinder >= fd->sc_type->cyls) { 1480 return EINVAL; 1481 } 1482 1483 fd_formb = malloc(sizeof(struct ne7_fd_formb), 1484 M_TEMP, M_NOWAIT); 1485 if (fd_formb == 0) 1486 return ENOMEM; 1487 1488 fd_formb->head = form_cmd->head; 1489 fd_formb->cyl = form_cmd->cylinder; 1490 fd_formb->transfer_rate = fd->sc_type->rate; 1491 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 1492 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 1493 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 1494 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 1495 1496 memset(il, 0, sizeof il); 1497 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 1498 while (il[(j%fd_formb->fd_formb_nsecs)+1]) 1499 j++; 1500 il[(j%fd_formb->fd_formb_nsecs)+1] = i; 1501 j += fd->sc_type->interleave; 1502 } 1503 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 1504 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 1505 fd_formb->fd_formb_headno(i) = form_cmd->head; 1506 fd_formb->fd_formb_secno(i) = il[i+1]; 1507 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 1508 } 1509 1510 error = fdformat(dev, fd_formb, p); 1511 free(fd_formb, M_TEMP); 1512 return error; 1513 1514 case FDIOCGETOPTS: /* get drive options */ 1515 *(int *)addr = fd->sc_opts; 1516 return 0; 1517 1518 case FDIOCSETOPTS: /* set drive options */ 1519 fd->sc_opts = *(int *)addr; 1520 return 0; 1521 1522 default: 1523 return ENOTTY; 1524 } 1525 1526 #ifdef DIAGNOSTIC 1527 panic("fdioctl: impossible"); 1528 #endif 1529 } 1530 1531 int 1532 fdformat(dev, finfo, p) 1533 dev_t dev; 1534 struct ne7_fd_formb *finfo; 1535 struct proc *p; 1536 { 1537 int rv = 0, s; 1538 struct fd_softc *fd = device_lookup(&fd_cd, FDUNIT(dev)); 1539 struct fd_type *type = fd->sc_type; 1540 struct buf *bp; 1541 1542 /* set up a buffer header for fdstrategy() */ 1543 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT|M_ZERO); 1544 if(bp == 0) 1545 return ENOBUFS; 1546 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 1547 bp->b_proc = p; 1548 bp->b_dev = dev; 1549 1550 /* 1551 * calculate a fake blkno, so fdstrategy() would initiate a 1552 * seek to the requested cylinder 1553 */ 1554 bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) 1555 + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; 1556 1557 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1558 bp->b_data = (caddr_t)finfo; 1559 1560 #ifdef DEBUG 1561 printf("fdformat: blkno %x count %lx\n", bp->b_blkno, bp->b_bcount); 1562 #endif 1563 1564 /* now do the format */ 1565 fdstrategy(bp); 1566 1567 /* ...and wait for it to complete */ 1568 s = splbio(); 1569 while (!(bp->b_flags & B_DONE)) { 1570 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 1571 if (rv == EWOULDBLOCK) 1572 break; 1573 } 1574 splx(s); 1575 1576 if (rv == EWOULDBLOCK) { 1577 /* timed out */ 1578 rv = EIO; 1579 biodone(bp); 1580 } 1581 if(bp->b_flags & B_ERROR) { 1582 rv = bp->b_error; 1583 } 1584 free(bp, M_TEMP); 1585 return rv; 1586 } 1587 1588 /* 1589 * Mountroot hook: prompt the user to enter the root file system 1590 * floppy. 1591 */ 1592 void 1593 fd_mountroot_hook(dev) 1594 struct device *dev; 1595 { 1596 int c; 1597 1598 printf("Insert filesystem floppy and press return."); 1599 cnpollc(1); 1600 for (;;) { 1601 c = cngetc(); 1602 if ((c == '\r') || (c == '\n')) { 1603 printf("\n"); 1604 break; 1605 } 1606 } 1607 cnpollc(0); 1608 } 1609