1 /* $NetBSD: fd.c,v 1.96 2002/11/01 11:31:53 mrg Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 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) 1993, 1994, 1995 Charles M. Hannum. 41 * Copyright (c) 1995 Paul Kranenburg. 42 * Copyright (c) 1990 The Regents of the University of California. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Don Ahn. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)fd.c 7.4 (Berkeley) 5/25/91 77 */ 78 79 #include "opt_ddb.h" 80 #include "opt_md.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/callout.h> 85 #include <sys/kernel.h> 86 #include <sys/file.h> 87 #include <sys/ioctl.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/dkstat.h> 91 #include <sys/disk.h> 92 #include <sys/fdio.h> 93 #include <sys/buf.h> 94 #include <sys/malloc.h> 95 #include <sys/proc.h> 96 #include <sys/uio.h> 97 #include <sys/stat.h> 98 #include <sys/syslog.h> 99 #include <sys/queue.h> 100 #include <sys/conf.h> 101 102 #include <dev/cons.h> 103 104 #include <uvm/uvm_extern.h> 105 106 #include <machine/autoconf.h> 107 #include <machine/intr.h> 108 109 #include <sparc/sparc/auxreg.h> 110 #include <sparc/dev/fdreg.h> 111 #include <sparc/dev/fdvar.h> 112 113 #define FDUNIT(dev) (minor(dev) / 8) 114 #define FDTYPE(dev) (minor(dev) % 8) 115 116 /* XXX misuse a flag to identify format operation */ 117 #define B_FORMAT B_XXX 118 119 #define FD_DEBUG 120 #ifdef FD_DEBUG 121 int fdc_debug = 0; 122 #endif 123 124 enum fdc_state { 125 DEVIDLE = 0, 126 MOTORWAIT, /* 1 */ 127 DOSEEK, /* 2 */ 128 SEEKWAIT, /* 3 */ 129 SEEKTIMEDOUT, /* 4 */ 130 SEEKCOMPLETE, /* 5 */ 131 DOIO, /* 6 */ 132 IOCOMPLETE, /* 7 */ 133 IOTIMEDOUT, /* 8 */ 134 IOCLEANUPWAIT, /* 9 */ 135 IOCLEANUPTIMEDOUT,/*10 */ 136 DORESET, /* 11 */ 137 RESETCOMPLETE, /* 12 */ 138 RESETTIMEDOUT, /* 13 */ 139 DORECAL, /* 14 */ 140 RECALWAIT, /* 15 */ 141 RECALTIMEDOUT, /* 16 */ 142 RECALCOMPLETE, /* 17 */ 143 }; 144 145 /* software state, per controller */ 146 struct fdc_softc { 147 struct device sc_dev; /* boilerplate */ 148 bus_space_tag_t sc_bustag; 149 150 struct callout sc_timo_ch; /* timeout callout */ 151 struct callout sc_intr_ch; /* pseudo-intr callout */ 152 153 struct fd_softc *sc_fd[4]; /* pointers to children */ 154 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 155 enum fdc_state sc_state; 156 int sc_flags; 157 #define FDC_82077 0x01 158 #define FDC_NEEDHEADSETTLE 0x02 159 #define FDC_EIS 0x04 160 #define FDC_NEEDMOTORWAIT 0x08 161 int sc_errors; /* number of retries so far */ 162 int sc_overruns; /* number of DMA overruns */ 163 int sc_cfg; /* current configuration */ 164 struct fdcio sc_io; 165 #define sc_handle sc_io.fdcio_handle 166 #define sc_reg_msr sc_io.fdcio_reg_msr 167 #define sc_reg_fifo sc_io.fdcio_reg_fifo 168 #define sc_reg_dor sc_io.fdcio_reg_dor 169 #define sc_reg_drs sc_io.fdcio_reg_msr 170 #define sc_itask sc_io.fdcio_itask 171 #define sc_istatus sc_io.fdcio_istatus 172 #define sc_data sc_io.fdcio_data 173 #define sc_tc sc_io.fdcio_tc 174 #define sc_nstat sc_io.fdcio_nstat 175 #define sc_status sc_io.fdcio_status 176 #define sc_intrcnt sc_io.fdcio_intrcnt 177 }; 178 179 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 180 181 /* controller driver configuration */ 182 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 183 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 184 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 185 void fdcattach_obio __P((struct device *, struct device *, void *)); 186 187 int fdcattach __P((struct fdc_softc *, int)); 188 189 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 190 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 191 192 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 193 fdcmatch_obio, fdcattach_obio, NULL, NULL); 194 195 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 196 197 /* 198 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 199 * we tell them apart. 200 */ 201 struct fd_type { 202 int sectrac; /* sectors per track */ 203 int heads; /* number of heads */ 204 int seccyl; /* sectors per cylinder */ 205 int secsize; /* size code for sectors */ 206 int datalen; /* data len when secsize = 0 */ 207 int steprate; /* step rate and head unload time */ 208 int gap1; /* gap len between sectors */ 209 int gap2; /* formatting gap */ 210 int cylinders; /* total num of cylinders */ 211 int size; /* size of disk in sectors */ 212 int step; /* steps per cylinder */ 213 int rate; /* transfer speed code */ 214 int fillbyte; /* format fill byte */ 215 int interleave; /* interleave factor (formatting) */ 216 char *name; 217 }; 218 219 /* The order of entries in the following table is important -- BEWARE! */ 220 struct fd_type fd_types[] = { 221 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 222 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 223 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 224 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 225 }; 226 227 /* software state, per disk (with up to 4 disks per ctlr) */ 228 struct fd_softc { 229 struct device sc_dv; /* generic device info */ 230 struct disk sc_dk; /* generic disk info */ 231 232 struct fd_type *sc_deftype; /* default type descriptor */ 233 struct fd_type *sc_type; /* current type descriptor */ 234 235 struct callout sc_motoron_ch; 236 struct callout sc_motoroff_ch; 237 238 daddr_t sc_blkno; /* starting block number */ 239 int sc_bcount; /* byte count left */ 240 int sc_skip; /* bytes already transferred */ 241 int sc_nblks; /* number of blocks currently transferring */ 242 int sc_nbytes; /* number of bytes currently transferring */ 243 244 int sc_drive; /* physical unit number */ 245 int sc_flags; 246 #define FD_OPEN 0x01 /* it's open */ 247 #define FD_MOTOR 0x02 /* motor should be on */ 248 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 249 int sc_cylin; /* where we think the head is */ 250 int sc_opts; /* user-set options */ 251 252 void *sc_sdhook; /* shutdownhook cookie */ 253 254 TAILQ_ENTRY(fd_softc) sc_drivechain; 255 int sc_ops; /* I/O ops since last switch */ 256 struct bufq_state sc_q; /* pending I/O requests */ 257 int sc_active; /* number of active I/O requests */ 258 }; 259 260 /* floppy driver configuration */ 261 int fdmatch __P((struct device *, struct cfdata *, void *)); 262 void fdattach __P((struct device *, struct device *, void *)); 263 264 CFATTACH_DECL(fd, sizeof(struct fd_softc), 265 fdmatch, fdattach, NULL, NULL); 266 267 extern struct cfdriver fd_cd; 268 269 dev_type_open(fdopen); 270 dev_type_close(fdclose); 271 dev_type_read(fdread); 272 dev_type_write(fdwrite); 273 dev_type_ioctl(fdioctl); 274 dev_type_strategy(fdstrategy); 275 276 const struct bdevsw fd_bdevsw = { 277 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 278 }; 279 280 const struct cdevsw fd_cdevsw = { 281 fdopen, fdclose, fdread, fdwrite, fdioctl, 282 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 283 }; 284 285 void fdgetdisklabel __P((dev_t)); 286 int fd_get_parms __P((struct fd_softc *)); 287 void fdstart __P((struct fd_softc *)); 288 int fdprint __P((void *, const char *)); 289 290 struct dkdriver fddkdriver = { fdstrategy }; 291 292 struct fd_type *fd_nvtotype __P((char *, int, int)); 293 void fd_set_motor __P((struct fdc_softc *fdc)); 294 void fd_motor_off __P((void *arg)); 295 void fd_motor_on __P((void *arg)); 296 int fdcresult __P((struct fdc_softc *fdc)); 297 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 298 void fdcstart __P((struct fdc_softc *fdc)); 299 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 300 void fdc_reset __P((struct fdc_softc *fdc)); 301 void fdctimeout __P((void *arg)); 302 void fdcpseudointr __P((void *arg)); 303 int fdc_c_hwintr __P((void *)); 304 void fdchwintr __P((void)); 305 int fdcswintr __P((void *)); 306 int fdcstate __P((struct fdc_softc *)); 307 void fdcretry __P((struct fdc_softc *fdc)); 308 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 309 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 310 void fd_do_eject __P((struct fd_softc *)); 311 void fd_mountroot_hook __P((struct device *)); 312 static int fdconf __P((struct fdc_softc *)); 313 static void establish_chip_type __P(( 314 struct fdc_softc *, 315 bus_space_tag_t, 316 bus_addr_t, 317 bus_size_t, 318 bus_space_handle_t)); 319 320 321 #if PIL_FDSOFT == 4 322 #define IE_FDSOFT IE_L4 323 #else 324 #error 4 325 #endif 326 327 #if defined(SUN4M) 328 #define FD_SET_SWINTR do { \ 329 if (CPU_ISSUN4M) \ 330 raise(0, PIL_FDSOFT); \ 331 else \ 332 ienab_bis(IE_L4); \ 333 } while(0) 334 #else 335 #define FD_SET_SWINTR ienab_bis(IE_FDSOFT) 336 #endif /* defined(SUN4M) */ 337 338 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 339 340 int 341 fdcmatch_mainbus(parent, match, aux) 342 struct device *parent; 343 struct cfdata *match; 344 void *aux; 345 { 346 struct mainbus_attach_args *ma = aux; 347 348 /* 349 * Floppy controller is on mainbus on sun4c. 350 */ 351 if (!CPU_ISSUN4C) 352 return (0); 353 354 /* sun4c PROMs call the controller "fd" */ 355 if (strcmp("fd", ma->ma_name) != 0) 356 return (0); 357 358 return (bus_space_probe(ma->ma_bustag, 359 ma->ma_paddr, 360 1, /* probe size */ 361 0, /* offset */ 362 0, /* flags */ 363 NULL, NULL)); 364 } 365 366 int 367 fdcmatch_obio(parent, match, aux) 368 struct device *parent; 369 struct cfdata *match; 370 void *aux; 371 { 372 union obio_attach_args *uoba = aux; 373 struct sbus_attach_args *sa; 374 375 /* 376 * Floppy controller is on obio on sun4m. 377 */ 378 if (uoba->uoba_isobio4 != 0) 379 return (0); 380 381 sa = &uoba->uoba_sbus; 382 383 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 384 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 385 return (0); 386 387 return (bus_space_probe(sa->sa_bustag, 388 sbus_bus_addr(sa->sa_bustag, 389 sa->sa_slot, sa->sa_offset), 390 1, /* probe size */ 391 0, /* offset */ 392 0, /* flags */ 393 NULL, NULL)); 394 } 395 396 static void 397 establish_chip_type(fdc, tag, addr, size, handle) 398 struct fdc_softc *fdc; 399 bus_space_tag_t tag; 400 bus_addr_t addr; 401 bus_size_t size; 402 bus_space_handle_t handle; 403 { 404 u_int8_t v; 405 406 /* 407 * This hack from Chris Torek: apparently DOR really 408 * addresses MSR/DRS on a 82072. 409 * We used to rely on the VERSION command to tell the 410 * difference (which did not work). 411 */ 412 413 /* First, check the size of the register bank */ 414 if (size < 8) 415 /* It isn't a 82077 */ 416 return; 417 418 /* Then probe the DOR register offset */ 419 if (bus_space_probe(tag, addr, 420 1, /* probe size */ 421 FDREG77_DOR, /* offset */ 422 0, /* flags */ 423 NULL, NULL) == 0) { 424 425 /* It isn't a 82077 */ 426 return; 427 } 428 429 v = bus_space_read_1(tag, handle, FDREG77_DOR); 430 if (v == NE7_RQM) { 431 /* 432 * Value in DOR looks like it's really MSR 433 */ 434 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 435 v = bus_space_read_1(tag, handle, FDREG77_DOR); 436 if (v == NE7_RQM) { 437 /* 438 * The value in the DOR didn't stick; 439 * it isn't a 82077 440 */ 441 return; 442 } 443 } 444 445 fdc->sc_flags |= FDC_82077; 446 } 447 448 /* 449 * Arguments passed between fdcattach and fdprobe. 450 */ 451 struct fdc_attach_args { 452 int fa_drive; 453 struct fd_type *fa_deftype; 454 }; 455 456 /* 457 * Print the location of a disk drive (called just before attaching the 458 * the drive). If `fdc' is not NULL, the drive was found but was not 459 * in the system config file; print the drive name as well. 460 * Return QUIET (config_find ignores this if the device was configured) to 461 * avoid printing `fdN not configured' messages. 462 */ 463 int 464 fdprint(aux, fdc) 465 void *aux; 466 const char *fdc; 467 { 468 register struct fdc_attach_args *fa = aux; 469 470 if (!fdc) 471 printf(" drive %d", fa->fa_drive); 472 return (QUIET); 473 } 474 475 /* 476 * Configure several parameters and features on the FDC. 477 * Return 0 on success. 478 */ 479 static int 480 fdconf(fdc) 481 struct fdc_softc *fdc; 482 { 483 int vroom; 484 485 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 486 return (-1); 487 488 /* 489 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 490 * the PROM thinks is appropriate. 491 */ 492 if ((vroom = fdc->sc_status[7]) == 0) 493 vroom = 0x64; 494 495 /* Configure controller to use FIFO and Implied Seek */ 496 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 497 return (-1); 498 if (fdc_wrfifo(fdc, vroom) != 0) 499 return (-1); 500 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 501 return (-1); 502 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 503 return (-1); 504 /* No result phase for the NE7CMD_CFG command */ 505 506 if ((fdc->sc_flags & FDC_82077) != 0) { 507 /* Lock configuration across soft resets. */ 508 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 509 fdcresult(fdc) != 1) { 510 #ifdef DEBUG 511 printf("fdconf: CFGLOCK failed"); 512 #endif 513 return (-1); 514 } 515 } 516 517 return (0); 518 #if 0 519 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 520 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 521 if (fdc_debug) 522 printf("[version cmd]"); 523 } 524 #endif 525 } 526 527 void 528 fdcattach_mainbus(parent, self, aux) 529 struct device *parent, *self; 530 void *aux; 531 { 532 struct fdc_softc *fdc = (void *)self; 533 struct mainbus_attach_args *ma = aux; 534 535 fdc->sc_bustag = ma->ma_bustag; 536 537 if (bus_space_map( 538 ma->ma_bustag, 539 ma->ma_paddr, 540 ma->ma_size, 541 BUS_SPACE_MAP_LINEAR, 542 &fdc->sc_handle) != 0) { 543 printf("%s: cannot map registers\n", self->dv_xname); 544 return; 545 } 546 547 establish_chip_type(fdc, 548 ma->ma_bustag, 549 ma->ma_paddr, 550 ma->ma_size, 551 fdc->sc_handle); 552 553 if (fdcattach(fdc, ma->ma_pri) != 0) 554 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 555 } 556 557 void 558 fdcattach_obio(parent, self, aux) 559 struct device *parent, *self; 560 void *aux; 561 { 562 struct fdc_softc *fdc = (void *)self; 563 union obio_attach_args *uoba = aux; 564 struct sbus_attach_args *sa = &uoba->uoba_sbus; 565 566 if (sa->sa_nintr == 0) { 567 printf(": no interrupt line configured\n"); 568 return; 569 } 570 571 fdc->sc_bustag = sa->sa_bustag; 572 573 if (sbus_bus_map(sa->sa_bustag, 574 sa->sa_slot, sa->sa_offset, sa->sa_size, 575 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 576 printf("%s: cannot map control registers\n", 577 self->dv_xname); 578 return; 579 } 580 581 establish_chip_type(fdc, 582 sa->sa_bustag, 583 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 584 sa->sa_size, 585 fdc->sc_handle); 586 587 if (strcmp(PROM_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 588 printf(": no drives attached\n"); 589 return; 590 } 591 592 if (fdcattach(fdc, sa->sa_pri) != 0) 593 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 594 } 595 596 int 597 fdcattach(fdc, pri) 598 struct fdc_softc *fdc; 599 int pri; 600 { 601 struct fdc_attach_args fa; 602 int drive_attached; 603 char code; 604 605 callout_init(&fdc->sc_timo_ch); 606 callout_init(&fdc->sc_intr_ch); 607 608 fdc->sc_state = DEVIDLE; 609 fdc->sc_itask = FDC_ITASK_NONE; 610 fdc->sc_istatus = FDC_ISTATUS_NONE; 611 fdc->sc_flags |= FDC_EIS; 612 TAILQ_INIT(&fdc->sc_drives); 613 614 if ((fdc->sc_flags & FDC_82077) != 0) { 615 fdc->sc_reg_msr = FDREG77_MSR; 616 fdc->sc_reg_fifo = FDREG77_FIFO; 617 fdc->sc_reg_dor = FDREG77_DOR; 618 code = '7'; 619 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 620 } else { 621 fdc->sc_reg_msr = FDREG72_MSR; 622 fdc->sc_reg_fifo = FDREG72_FIFO; 623 fdc->sc_reg_dor = 0; 624 code = '2'; 625 } 626 627 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 628 629 /* 630 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 631 * Note: CFG_EFIFO is active-low, initial threshold value: 8 632 */ 633 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 634 if (fdconf(fdc) != 0) { 635 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 636 return (-1); 637 } 638 639 fdciop = &fdc->sc_io; 640 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 641 BUS_INTR_ESTABLISH_FASTTRAP, 642 (int (*) __P((void *)))fdchwintr, NULL) == NULL) { 643 644 printf("%s: notice: no fast trap handler slot available\n", 645 fdc->sc_dev.dv_xname); 646 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 0, 647 fdc_c_hwintr, fdc) == NULL) { 648 printf("%s: cannot register interrupt handler\n", 649 fdc->sc_dev.dv_xname); 650 return (-1); 651 } 652 } 653 654 if (bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, IPL_BIO, 655 BUS_INTR_ESTABLISH_SOFTINTR, 656 fdcswintr, fdc) == NULL) { 657 printf("%s: cannot register interrupt handler\n", 658 fdc->sc_dev.dv_xname); 659 return (-1); 660 } 661 662 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 663 fdc->sc_dev.dv_xname, "intr"); 664 665 /* physical limit: four drives per controller. */ 666 drive_attached = 0; 667 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 668 fa.fa_deftype = NULL; /* unknown */ 669 fa.fa_deftype = &fd_types[0]; /* XXX */ 670 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 671 drive_attached = 1; 672 } 673 674 if (drive_attached == 0) { 675 /* XXX - dis-establish interrupts here */ 676 /* return (-1); */ 677 } 678 679 return (0); 680 } 681 682 int 683 fdmatch(parent, match, aux) 684 struct device *parent; 685 struct cfdata *match; 686 void *aux; 687 { 688 struct fdc_softc *fdc = (void *)parent; 689 bus_space_tag_t t = fdc->sc_bustag; 690 bus_space_handle_t h = fdc->sc_handle; 691 struct fdc_attach_args *fa = aux; 692 int drive = fa->fa_drive; 693 int n, ok; 694 695 if (drive > 0) 696 /* XXX - for now, punt on more than one drive */ 697 return (0); 698 699 if ((fdc->sc_flags & FDC_82077) != 0) { 700 /* select drive and turn on motor */ 701 bus_space_write_1(t, h, fdc->sc_reg_dor, 702 drive | FDO_FRST | FDO_MOEN(drive)); 703 /* wait for motor to spin up */ 704 delay(250000); 705 } else { 706 auxregbisc(AUXIO4C_FDS, 0); 707 } 708 fdc->sc_nstat = 0; 709 fdc_wrfifo(fdc, NE7CMD_RECAL); 710 fdc_wrfifo(fdc, drive); 711 712 /* Wait for recalibration to complete */ 713 for (n = 0; n < 10000; n++) { 714 u_int8_t v; 715 716 delay(1000); 717 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 718 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 719 /* wait a bit longer till device *really* is ready */ 720 delay(100000); 721 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 722 break; 723 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 724 /* 725 * Got `invalid command'; we interpret it 726 * to mean that the re-calibrate hasn't in 727 * fact finished yet 728 */ 729 continue; 730 break; 731 } 732 } 733 n = fdc->sc_nstat; 734 #ifdef FD_DEBUG 735 if (fdc_debug) { 736 int i; 737 printf("fdprobe: %d stati:", n); 738 for (i = 0; i < n; i++) 739 printf(" 0x%x", fdc->sc_status[i]); 740 printf("\n"); 741 } 742 #endif 743 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 744 745 /* turn off motor */ 746 if ((fdc->sc_flags & FDC_82077) != 0) { 747 /* deselect drive and turn motor off */ 748 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 749 } else { 750 auxregbisc(0, AUXIO4C_FDS); 751 } 752 753 return (ok); 754 } 755 756 /* 757 * Controller is working, and drive responded. Attach it. 758 */ 759 void 760 fdattach(parent, self, aux) 761 struct device *parent, *self; 762 void *aux; 763 { 764 struct fdc_softc *fdc = (void *)parent; 765 struct fd_softc *fd = (void *)self; 766 struct fdc_attach_args *fa = aux; 767 struct fd_type *type = fa->fa_deftype; 768 int drive = fa->fa_drive; 769 770 callout_init(&fd->sc_motoron_ch); 771 callout_init(&fd->sc_motoroff_ch); 772 773 /* XXX Allow `flags' to override device type? */ 774 775 if (type) 776 printf(": %s %d cyl, %d head, %d sec\n", type->name, 777 type->cylinders, type->heads, type->sectrac); 778 else 779 printf(": density unknown\n"); 780 781 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 782 fd->sc_cylin = -1; 783 fd->sc_drive = drive; 784 fd->sc_deftype = type; 785 fdc->sc_fd[drive] = fd; 786 787 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 788 fdc_wrfifo(fdc, type->steprate); 789 /* XXX head load time == 6ms */ 790 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 791 792 /* 793 * Initialize and attach the disk structure. 794 */ 795 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 796 fd->sc_dk.dk_driver = &fddkdriver; 797 disk_attach(&fd->sc_dk); 798 799 /* 800 * Establish a mountroot_hook anyway in case we booted 801 * with RB_ASKNAME and get selected as the boot device. 802 */ 803 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 804 805 /* Make sure the drive motor gets turned off at shutdown time. */ 806 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 807 } 808 809 __inline struct fd_type * 810 fd_dev_to_type(fd, dev) 811 struct fd_softc *fd; 812 dev_t dev; 813 { 814 int type = FDTYPE(dev); 815 816 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 817 return (NULL); 818 return (type ? &fd_types[type - 1] : fd->sc_deftype); 819 } 820 821 void 822 fdstrategy(bp) 823 register struct buf *bp; /* IO operation to perform */ 824 { 825 struct fd_softc *fd; 826 int unit = FDUNIT(bp->b_dev); 827 int sz; 828 int s; 829 830 /* Valid unit, controller, and request? */ 831 if (unit >= fd_cd.cd_ndevs || 832 (fd = fd_cd.cd_devs[unit]) == 0 || 833 bp->b_blkno < 0 || 834 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 835 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 836 (bp->b_flags & B_FORMAT) == 0)) { 837 bp->b_error = EINVAL; 838 goto bad; 839 } 840 841 /* If it's a null transfer, return immediately. */ 842 if (bp->b_bcount == 0) 843 goto done; 844 845 sz = howmany(bp->b_bcount, DEV_BSIZE); 846 847 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 848 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 849 - bp->b_blkno; 850 if (sz == 0) { 851 /* If exactly at end of disk, return EOF. */ 852 bp->b_resid = bp->b_bcount; 853 goto done; 854 } 855 if (sz < 0) { 856 /* If past end of disk, return EINVAL. */ 857 bp->b_error = EINVAL; 858 goto bad; 859 } 860 /* Otherwise, truncate request. */ 861 bp->b_bcount = sz << DEV_BSHIFT; 862 } 863 864 bp->b_rawblkno = bp->b_blkno; 865 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 866 (FD_BSIZE(fd) * fd->sc_type->seccyl); 867 868 #ifdef FD_DEBUG 869 if (fdc_debug > 1) 870 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 871 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 872 #endif 873 874 /* Queue transfer on drive, activate drive and controller if idle. */ 875 s = splbio(); 876 BUFQ_PUT(&fd->sc_q, bp); 877 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 878 if (fd->sc_active == 0) 879 fdstart(fd); 880 #ifdef DIAGNOSTIC 881 else { 882 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 883 if (fdc->sc_state == DEVIDLE) { 884 printf("fdstrategy: controller inactive\n"); 885 fdcstart(fdc); 886 } 887 } 888 #endif 889 splx(s); 890 return; 891 892 bad: 893 bp->b_flags |= B_ERROR; 894 done: 895 /* Toss transfer; we're done early. */ 896 biodone(bp); 897 } 898 899 void 900 fdstart(fd) 901 struct fd_softc *fd; 902 { 903 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 904 int active = fdc->sc_drives.tqh_first != 0; 905 906 /* Link into controller queue. */ 907 fd->sc_active = 1; 908 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 909 910 /* If controller not already active, start it. */ 911 if (!active) 912 fdcstart(fdc); 913 } 914 915 void 916 fdfinish(fd, bp) 917 struct fd_softc *fd; 918 struct buf *bp; 919 { 920 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 921 922 /* 923 * Move this drive to the end of the queue to give others a `fair' 924 * chance. We only force a switch if N operations are completed while 925 * another drive is waiting to be serviced, since there is a long motor 926 * startup delay whenever we switch. 927 */ 928 (void)BUFQ_GET(&fd->sc_q); 929 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 930 fd->sc_ops = 0; 931 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 932 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 933 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 934 } else 935 fd->sc_active = 0; 936 } 937 bp->b_resid = fd->sc_bcount; 938 fd->sc_skip = 0; 939 940 biodone(bp); 941 /* turn off motor 5s from now */ 942 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 943 fdc->sc_state = DEVIDLE; 944 } 945 946 void 947 fdc_reset(fdc) 948 struct fdc_softc *fdc; 949 { 950 bus_space_tag_t t = fdc->sc_bustag; 951 bus_space_handle_t h = fdc->sc_handle; 952 953 if ((fdc->sc_flags & FDC_82077) != 0) { 954 bus_space_write_1(t, h, fdc->sc_reg_dor, 955 FDO_FDMAEN | FDO_MOEN(0)); 956 } 957 958 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 959 delay(10); 960 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 961 962 if ((fdc->sc_flags & FDC_82077) != 0) { 963 bus_space_write_1(t, h, fdc->sc_reg_dor, 964 FDO_FRST | FDO_FDMAEN | FDO_DS); 965 } 966 #ifdef FD_DEBUG 967 if (fdc_debug) 968 printf("fdc reset\n"); 969 #endif 970 } 971 972 void 973 fd_set_motor(fdc) 974 struct fdc_softc *fdc; 975 { 976 struct fd_softc *fd; 977 u_char status; 978 int n; 979 980 if ((fdc->sc_flags & FDC_82077) != 0) { 981 status = FDO_FRST | FDO_FDMAEN; 982 if ((fd = fdc->sc_drives.tqh_first) != NULL) 983 status |= fd->sc_drive; 984 985 for (n = 0; n < 4; n++) 986 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 987 status |= FDO_MOEN(n); 988 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 989 fdc->sc_reg_dor, status); 990 } else { 991 992 for (n = 0; n < 4; n++) { 993 if ((fd = fdc->sc_fd[n]) != NULL && 994 (fd->sc_flags & FD_MOTOR) != 0) { 995 auxregbisc(AUXIO4C_FDS, 0); 996 return; 997 } 998 } 999 auxregbisc(0, AUXIO4C_FDS); 1000 } 1001 } 1002 1003 void 1004 fd_motor_off(arg) 1005 void *arg; 1006 { 1007 struct fd_softc *fd = arg; 1008 int s; 1009 1010 s = splbio(); 1011 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1012 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 1013 splx(s); 1014 } 1015 1016 void 1017 fd_motor_on(arg) 1018 void *arg; 1019 { 1020 struct fd_softc *fd = arg; 1021 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1022 int s; 1023 1024 s = splbio(); 1025 fd->sc_flags &= ~FD_MOTOR_WAIT; 1026 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1027 (void) fdcstate(fdc); 1028 splx(s); 1029 } 1030 1031 /* 1032 * Get status bytes off the FDC after a command has finished 1033 * Returns the number of status bytes read; -1 on error. 1034 * The return value is also stored in `sc_nstat'. 1035 */ 1036 int 1037 fdcresult(fdc) 1038 struct fdc_softc *fdc; 1039 { 1040 bus_space_tag_t t = fdc->sc_bustag; 1041 bus_space_handle_t h = fdc->sc_handle; 1042 int j, n = 0; 1043 1044 for (j = 10000; j; j--) { 1045 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1046 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1047 if (v == NE7_RQM) 1048 return (fdc->sc_nstat = n); 1049 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1050 if (n >= sizeof(fdc->sc_status)) { 1051 log(LOG_ERR, "fdcresult: overrun\n"); 1052 return (-1); 1053 } 1054 fdc->sc_status[n++] = 1055 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1056 } else 1057 delay(1); 1058 } 1059 1060 log(LOG_ERR, "fdcresult: timeout\n"); 1061 return (fdc->sc_nstat = -1); 1062 } 1063 1064 /* 1065 * Write a command byte to the FDC. 1066 * Returns 0 on success; -1 on failure (i.e. timeout) 1067 */ 1068 int 1069 fdc_wrfifo(fdc, x) 1070 struct fdc_softc *fdc; 1071 u_int8_t x; 1072 { 1073 bus_space_tag_t t = fdc->sc_bustag; 1074 bus_space_handle_t h = fdc->sc_handle; 1075 int i; 1076 1077 for (i = 100000; i-- > 0;) { 1078 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1079 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1080 /* The chip is ready */ 1081 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1082 return (0); 1083 } 1084 delay(1); 1085 } 1086 return (-1); 1087 } 1088 1089 int 1090 fdopen(dev, flags, fmt, p) 1091 dev_t dev; 1092 int flags, fmt; 1093 struct proc *p; 1094 { 1095 int unit, pmask; 1096 struct fd_softc *fd; 1097 struct fd_type *type; 1098 1099 unit = FDUNIT(dev); 1100 if (unit >= fd_cd.cd_ndevs) 1101 return (ENXIO); 1102 fd = fd_cd.cd_devs[unit]; 1103 if (fd == NULL) 1104 return (ENXIO); 1105 type = fd_dev_to_type(fd, dev); 1106 if (type == NULL) 1107 return (ENXIO); 1108 1109 if ((fd->sc_flags & FD_OPEN) != 0 && 1110 fd->sc_type != type) 1111 return (EBUSY); 1112 1113 fd->sc_type = type; 1114 fd->sc_cylin = -1; 1115 fd->sc_flags |= FD_OPEN; 1116 1117 /* 1118 * Only update the disklabel if we're not open anywhere else. 1119 */ 1120 if (fd->sc_dk.dk_openmask == 0) 1121 fdgetdisklabel(dev); 1122 1123 pmask = (1 << DISKPART(dev)); 1124 1125 switch (fmt) { 1126 case S_IFCHR: 1127 fd->sc_dk.dk_copenmask |= pmask; 1128 break; 1129 1130 case S_IFBLK: 1131 fd->sc_dk.dk_bopenmask |= pmask; 1132 break; 1133 } 1134 fd->sc_dk.dk_openmask = 1135 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1136 1137 return (0); 1138 } 1139 1140 int 1141 fdclose(dev, flags, fmt, p) 1142 dev_t dev; 1143 int flags, fmt; 1144 struct proc *p; 1145 { 1146 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1147 int pmask = (1 << DISKPART(dev)); 1148 1149 fd->sc_flags &= ~FD_OPEN; 1150 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1151 1152 switch (fmt) { 1153 case S_IFCHR: 1154 fd->sc_dk.dk_copenmask &= ~pmask; 1155 break; 1156 1157 case S_IFBLK: 1158 fd->sc_dk.dk_bopenmask &= ~pmask; 1159 break; 1160 } 1161 fd->sc_dk.dk_openmask = 1162 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1163 1164 return (0); 1165 } 1166 1167 int 1168 fdread(dev, uio, flag) 1169 dev_t dev; 1170 struct uio *uio; 1171 int flag; 1172 { 1173 1174 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1175 } 1176 1177 int 1178 fdwrite(dev, uio, flag) 1179 dev_t dev; 1180 struct uio *uio; 1181 int flag; 1182 { 1183 1184 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1185 } 1186 1187 void 1188 fdcstart(fdc) 1189 struct fdc_softc *fdc; 1190 { 1191 1192 #ifdef DIAGNOSTIC 1193 /* only got here if controller's drive queue was inactive; should 1194 be in idle state */ 1195 if (fdc->sc_state != DEVIDLE) { 1196 printf("fdcstart: not idle\n"); 1197 return; 1198 } 1199 #endif 1200 (void) fdcstate(fdc); 1201 } 1202 1203 void 1204 fdcstatus(fdc, s) 1205 struct fdc_softc *fdc; 1206 char *s; 1207 { 1208 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1209 int n; 1210 char bits[64]; 1211 1212 /* Just print last status */ 1213 n = fdc->sc_nstat; 1214 1215 #if 0 1216 /* 1217 * A 82072 seems to return <invalid command> on 1218 * gratuitous Sense Interrupt commands. 1219 */ 1220 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1221 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1222 (void) fdcresult(fdc); 1223 n = 2; 1224 } 1225 #endif 1226 1227 printf("%s: %s: state %d", 1228 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1229 1230 switch (n) { 1231 case 0: 1232 printf("\n"); 1233 break; 1234 case 2: 1235 printf(" (st0 %s cyl %d)\n", 1236 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1237 bits, sizeof(bits)), fdc->sc_status[1]); 1238 break; 1239 case 7: 1240 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1241 NE7_ST0BITS, bits, sizeof(bits))); 1242 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1243 NE7_ST1BITS, bits, sizeof(bits))); 1244 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1245 NE7_ST2BITS, bits, sizeof(bits))); 1246 printf(" cyl %d head %d sec %d)\n", 1247 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1248 break; 1249 #ifdef DIAGNOSTIC 1250 default: 1251 printf(" fdcstatus: weird size: %d\n", n); 1252 break; 1253 #endif 1254 } 1255 } 1256 1257 void 1258 fdctimeout(arg) 1259 void *arg; 1260 { 1261 struct fdc_softc *fdc = arg; 1262 struct fd_softc *fd; 1263 int s; 1264 1265 s = splbio(); 1266 fd = fdc->sc_drives.tqh_first; 1267 if (fd == NULL) { 1268 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1269 fdc->sc_dev.dv_xname, 1270 fdc->sc_state, fdc->sc_istatus); 1271 fdc->sc_state = DEVIDLE; 1272 goto out; 1273 } 1274 1275 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1276 fdc->sc_state++; 1277 else 1278 fdc->sc_state = DEVIDLE; 1279 1280 (void) fdcstate(fdc); 1281 out: 1282 splx(s); 1283 1284 } 1285 1286 void 1287 fdcpseudointr(arg) 1288 void *arg; 1289 { 1290 struct fdc_softc *fdc = arg; 1291 int s; 1292 1293 /* Just ensure it has the right spl. */ 1294 s = splbio(); 1295 (void) fdcstate(fdc); 1296 splx(s); 1297 } 1298 1299 1300 /* 1301 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1302 * handler is available. Unfortunately, we have no reliable way to 1303 * determine that the interrupt really came from the floppy controller; 1304 * just hope that the other devices that share this interrupt level 1305 * can do better.. 1306 */ 1307 int 1308 fdc_c_hwintr(arg) 1309 void *arg; 1310 { 1311 struct fdc_softc *fdc = arg; 1312 bus_space_tag_t t = fdc->sc_bustag; 1313 bus_space_handle_t h = fdc->sc_handle; 1314 1315 switch (fdc->sc_itask) { 1316 case FDC_ITASK_NONE: 1317 return (0); 1318 case FDC_ITASK_SENSEI: 1319 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1320 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1321 else 1322 fdc->sc_istatus = FDC_ISTATUS_DONE; 1323 FD_SET_SWINTR; 1324 return (1); 1325 case FDC_ITASK_DMA: 1326 /* Proceed with pseudo-dma below */ 1327 break; 1328 default: 1329 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1330 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1331 FD_SET_SWINTR; 1332 return (1); 1333 } 1334 1335 /* 1336 * Pseudo DMA in progress 1337 */ 1338 for (;;) { 1339 u_int8_t msr; 1340 1341 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1342 1343 if ((msr & NE7_RQM) == 0) 1344 /* That's all this round */ 1345 break; 1346 1347 if ((msr & NE7_NDM) == 0) { 1348 fdcresult(fdc); 1349 fdc->sc_istatus = FDC_ISTATUS_DONE; 1350 FD_SET_SWINTR; 1351 #ifdef FD_DEBUG 1352 if (fdc_debug > 1) 1353 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1354 #endif 1355 break; 1356 } 1357 1358 /* Another byte can be transferred */ 1359 if ((msr & NE7_DIO) != 0) 1360 *fdc->sc_data = 1361 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1362 else 1363 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1364 *fdc->sc_data); 1365 1366 fdc->sc_data++; 1367 if (--fdc->sc_tc == 0) { 1368 fdc->sc_istatus = FDC_ISTATUS_DONE; 1369 FTC_FLIP; 1370 fdcresult(fdc); 1371 FD_SET_SWINTR; 1372 break; 1373 } 1374 } 1375 return (1); 1376 } 1377 1378 int 1379 fdcswintr(arg) 1380 void *arg; 1381 { 1382 struct fdc_softc *fdc = arg; 1383 int s; 1384 1385 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1386 /* This (software) interrupt is not for us */ 1387 return (0); 1388 1389 switch (fdc->sc_istatus) { 1390 case FDC_ISTATUS_ERROR: 1391 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1392 break; 1393 case FDC_ISTATUS_SPURIOUS: 1394 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1395 break; 1396 } 1397 1398 s = splbio(); 1399 fdcstate(fdc); 1400 splx(s); 1401 return (1); 1402 } 1403 1404 int 1405 fdcstate(fdc) 1406 struct fdc_softc *fdc; 1407 { 1408 #define st0 fdc->sc_status[0] 1409 #define st1 fdc->sc_status[1] 1410 #define cyl fdc->sc_status[1] 1411 #define FDC_WRFIFO(fdc, c) do { \ 1412 if (fdc_wrfifo(fdc, (c))) { \ 1413 goto xxx; \ 1414 } \ 1415 } while(0) 1416 1417 struct fd_softc *fd; 1418 struct buf *bp; 1419 int read, head, sec, nblks; 1420 struct fd_type *type; 1421 struct ne7_fd_formb *finfo = NULL; 1422 1423 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1424 /* Prevent loop if the reset sequence produces errors */ 1425 if (fdc->sc_state != RESETCOMPLETE && 1426 fdc->sc_state != RECALWAIT && 1427 fdc->sc_state != RECALCOMPLETE) 1428 fdc->sc_state = DORESET; 1429 } 1430 1431 /* Clear I task/status field */ 1432 fdc->sc_istatus = FDC_ISTATUS_NONE; 1433 fdc->sc_itask = FDC_ITASK_NONE; 1434 1435 loop: 1436 /* Is there a drive for the controller to do a transfer with? */ 1437 fd = fdc->sc_drives.tqh_first; 1438 if (fd == NULL) { 1439 fdc->sc_state = DEVIDLE; 1440 return (0); 1441 } 1442 1443 /* Is there a transfer to this drive? If not, deactivate drive. */ 1444 bp = BUFQ_PEEK(&fd->sc_q); 1445 if (bp == NULL) { 1446 fd->sc_ops = 0; 1447 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1448 fd->sc_active = 0; 1449 goto loop; 1450 } 1451 1452 if (bp->b_flags & B_FORMAT) 1453 finfo = (struct ne7_fd_formb *)bp->b_data; 1454 1455 switch (fdc->sc_state) { 1456 case DEVIDLE: 1457 fdc->sc_errors = 0; 1458 fd->sc_skip = 0; 1459 fd->sc_bcount = bp->b_bcount; 1460 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1461 callout_stop(&fd->sc_motoroff_ch); 1462 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1463 fdc->sc_state = MOTORWAIT; 1464 return (1); 1465 } 1466 if ((fd->sc_flags & FD_MOTOR) == 0) { 1467 /* Turn on the motor, being careful about pairing. */ 1468 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1469 if (ofd && ofd->sc_flags & FD_MOTOR) { 1470 callout_stop(&ofd->sc_motoroff_ch); 1471 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1472 } 1473 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1474 fd_set_motor(fdc); 1475 fdc->sc_state = MOTORWAIT; 1476 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1477 /* Allow .25s for motor to stabilize. */ 1478 callout_reset(&fd->sc_motoron_ch, hz / 4, 1479 fd_motor_on, fd); 1480 } else { 1481 fd->sc_flags &= ~FD_MOTOR_WAIT; 1482 goto loop; 1483 } 1484 return (1); 1485 } 1486 /* Make sure the right drive is selected. */ 1487 fd_set_motor(fdc); 1488 1489 /*FALLTHROUGH*/ 1490 case DOSEEK: 1491 doseek: 1492 if ((fdc->sc_flags & FDC_EIS) && 1493 (bp->b_flags & B_FORMAT) == 0) { 1494 fd->sc_cylin = bp->b_cylinder; 1495 /* We use implied seek */ 1496 goto doio; 1497 } 1498 1499 if (fd->sc_cylin == bp->b_cylinder) 1500 goto doio; 1501 1502 fd->sc_cylin = -1; 1503 fdc->sc_state = SEEKWAIT; 1504 fdc->sc_nstat = 0; 1505 1506 fd->sc_dk.dk_seek++; 1507 1508 disk_busy(&fd->sc_dk); 1509 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1510 1511 /* specify command */ 1512 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1513 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1514 /* XXX head load time == 6ms */ 1515 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1516 1517 fdc->sc_itask = FDC_ITASK_SENSEI; 1518 /* seek function */ 1519 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1520 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1521 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1522 return (1); 1523 1524 case DOIO: 1525 doio: 1526 if (finfo != NULL) 1527 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1528 (char *)finfo; 1529 type = fd->sc_type; 1530 sec = fd->sc_blkno % type->seccyl; 1531 nblks = type->seccyl - sec; 1532 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1533 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1534 fd->sc_nblks = nblks; 1535 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1536 head = sec / type->sectrac; 1537 sec -= head * type->sectrac; 1538 #ifdef DIAGNOSTIC 1539 {int block; 1540 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1541 if (block != fd->sc_blkno) { 1542 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1543 #ifdef DDB 1544 Debugger(); 1545 #endif 1546 }} 1547 #endif 1548 read = bp->b_flags & B_READ; 1549 1550 /* Setup for pseudo DMA */ 1551 fdc->sc_data = bp->b_data + fd->sc_skip; 1552 fdc->sc_tc = fd->sc_nbytes; 1553 1554 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1555 fdc->sc_reg_drs, type->rate); 1556 #ifdef FD_DEBUG 1557 if (fdc_debug > 1) 1558 printf("fdcstate: doio: %s drive %d " 1559 "track %d head %d sec %d nblks %d\n", 1560 finfo ? "format" : 1561 (read ? "read" : "write"), 1562 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1563 #endif 1564 fdc->sc_state = IOCOMPLETE; 1565 fdc->sc_itask = FDC_ITASK_DMA; 1566 fdc->sc_nstat = 0; 1567 1568 disk_busy(&fd->sc_dk); 1569 1570 /* allow 3 seconds for operation */ 1571 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1572 1573 if (finfo != NULL) { 1574 /* formatting */ 1575 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1576 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1577 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1578 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1579 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1580 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1581 } else { 1582 if (read) 1583 FDC_WRFIFO(fdc, NE7CMD_READ); 1584 else 1585 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1586 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1587 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1588 FDC_WRFIFO(fdc, head); 1589 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1590 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1591 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1592 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1593 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1594 } 1595 1596 return (1); /* will return later */ 1597 1598 case SEEKWAIT: 1599 callout_stop(&fdc->sc_timo_ch); 1600 fdc->sc_state = SEEKCOMPLETE; 1601 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1602 /* allow 1/50 second for heads to settle */ 1603 callout_reset(&fdc->sc_intr_ch, hz / 50, 1604 fdcpseudointr, fdc); 1605 return (1); /* will return later */ 1606 } 1607 /*FALLTHROUGH*/ 1608 case SEEKCOMPLETE: 1609 /* no data on seek */ 1610 disk_unbusy(&fd->sc_dk, 0, 0); 1611 1612 /* Make sure seek really happened. */ 1613 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1614 cyl != bp->b_cylinder * fd->sc_type->step) { 1615 #ifdef FD_DEBUG 1616 if (fdc_debug) 1617 fdcstatus(fdc, "seek failed"); 1618 #endif 1619 fdcretry(fdc); 1620 goto loop; 1621 } 1622 fd->sc_cylin = bp->b_cylinder; 1623 goto doio; 1624 1625 case IOTIMEDOUT: 1626 /* 1627 * Try to abort the I/O operation without resetting 1628 * the chip first. Poke TC and arrange to pick up 1629 * the timed out I/O command's status. 1630 */ 1631 fdc->sc_itask = FDC_ITASK_RESULT; 1632 fdc->sc_state = IOCLEANUPWAIT; 1633 fdc->sc_nstat = 0; 1634 /* 1/10 second should be enough */ 1635 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1636 FTC_FLIP; 1637 return (1); 1638 1639 case IOCLEANUPTIMEDOUT: 1640 case SEEKTIMEDOUT: 1641 case RECALTIMEDOUT: 1642 case RESETTIMEDOUT: 1643 fdcstatus(fdc, "timeout"); 1644 1645 /* All other timeouts always roll through to a chip reset */ 1646 fdcretry(fdc); 1647 1648 /* Force reset, no matter what fdcretry() says */ 1649 fdc->sc_state = DORESET; 1650 goto loop; 1651 1652 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1653 callout_stop(&fdc->sc_timo_ch); 1654 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1655 (bp->b_flags & B_READ)); 1656 fdcretry(fdc); 1657 goto loop; 1658 1659 case IOCOMPLETE: /* IO DONE, post-analyze */ 1660 callout_stop(&fdc->sc_timo_ch); 1661 1662 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1663 (bp->b_flags & B_READ)); 1664 1665 if (fdc->sc_nstat != 7 || st1 != 0 || 1666 ((st0 & 0xf8) != 0 && 1667 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1668 #ifdef FD_DEBUG 1669 if (fdc_debug) { 1670 fdcstatus(fdc, 1671 bp->b_flags & B_READ 1672 ? "read failed" : "write failed"); 1673 printf("blkno %d nblks %d nstat %d tc %d\n", 1674 fd->sc_blkno, fd->sc_nblks, 1675 fdc->sc_nstat, fdc->sc_tc); 1676 } 1677 #endif 1678 if (fdc->sc_nstat == 7 && 1679 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1680 1681 /* 1682 * Silently retry overruns if no other 1683 * error bit is set. Adjust threshold. 1684 */ 1685 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1686 if (thr < 15) { 1687 thr++; 1688 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1689 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1690 #ifdef FD_DEBUG 1691 if (fdc_debug) 1692 printf("fdc: %d -> threshold\n", thr); 1693 #endif 1694 fdconf(fdc); 1695 fdc->sc_overruns = 0; 1696 } 1697 if (++fdc->sc_overruns < 3) { 1698 fdc->sc_state = DOIO; 1699 goto loop; 1700 } 1701 } 1702 fdcretry(fdc); 1703 goto loop; 1704 } 1705 if (fdc->sc_errors) { 1706 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1707 fd->sc_skip / FD_BSIZE(fd), 1708 (struct disklabel *)NULL); 1709 printf("\n"); 1710 fdc->sc_errors = 0; 1711 } else { 1712 if (--fdc->sc_overruns < -20) { 1713 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1714 if (thr > 0) { 1715 thr--; 1716 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1717 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1718 #ifdef FD_DEBUG 1719 if (fdc_debug) 1720 printf("fdc: %d -> threshold\n", thr); 1721 #endif 1722 fdconf(fdc); 1723 } 1724 fdc->sc_overruns = 0; 1725 } 1726 } 1727 fd->sc_blkno += fd->sc_nblks; 1728 fd->sc_skip += fd->sc_nbytes; 1729 fd->sc_bcount -= fd->sc_nbytes; 1730 if (finfo == NULL && fd->sc_bcount > 0) { 1731 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1732 goto doseek; 1733 } 1734 fdfinish(fd, bp); 1735 goto loop; 1736 1737 case DORESET: 1738 /* try a reset, keep motor on */ 1739 fd_set_motor(fdc); 1740 delay(100); 1741 fdc->sc_nstat = 0; 1742 fdc->sc_itask = FDC_ITASK_SENSEI; 1743 fdc->sc_state = RESETCOMPLETE; 1744 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1745 fdc_reset(fdc); 1746 return (1); /* will return later */ 1747 1748 case RESETCOMPLETE: 1749 callout_stop(&fdc->sc_timo_ch); 1750 fdconf(fdc); 1751 1752 /* FALLTHROUGH */ 1753 case DORECAL: 1754 fdc->sc_state = RECALWAIT; 1755 fdc->sc_itask = FDC_ITASK_SENSEI; 1756 fdc->sc_nstat = 0; 1757 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1758 /* recalibrate function */ 1759 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1760 FDC_WRFIFO(fdc, fd->sc_drive); 1761 return (1); /* will return later */ 1762 1763 case RECALWAIT: 1764 callout_stop(&fdc->sc_timo_ch); 1765 fdc->sc_state = RECALCOMPLETE; 1766 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1767 /* allow 1/30 second for heads to settle */ 1768 callout_reset(&fdc->sc_intr_ch, hz / 30, 1769 fdcpseudointr, fdc); 1770 return (1); /* will return later */ 1771 } 1772 1773 case RECALCOMPLETE: 1774 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1775 #ifdef FD_DEBUG 1776 if (fdc_debug) 1777 fdcstatus(fdc, "recalibrate failed"); 1778 #endif 1779 fdcretry(fdc); 1780 goto loop; 1781 } 1782 fd->sc_cylin = 0; 1783 goto doseek; 1784 1785 case MOTORWAIT: 1786 if (fd->sc_flags & FD_MOTOR_WAIT) 1787 return (1); /* time's not up yet */ 1788 goto doseek; 1789 1790 default: 1791 fdcstatus(fdc, "stray interrupt"); 1792 return (1); 1793 } 1794 #ifdef DIAGNOSTIC 1795 panic("fdcintr: impossible"); 1796 #endif 1797 1798 xxx: 1799 /* 1800 * We get here if the chip locks up in FDC_WRFIFO() 1801 * Cancel any operation and schedule a reset 1802 */ 1803 callout_stop(&fdc->sc_timo_ch); 1804 fdcretry(fdc); 1805 (fdc)->sc_state = DORESET; 1806 goto loop; 1807 1808 #undef st0 1809 #undef st1 1810 #undef cyl 1811 } 1812 1813 void 1814 fdcretry(fdc) 1815 struct fdc_softc *fdc; 1816 { 1817 struct fd_softc *fd; 1818 struct buf *bp; 1819 int error = EIO; 1820 1821 fd = fdc->sc_drives.tqh_first; 1822 bp = BUFQ_PEEK(&fd->sc_q); 1823 1824 fdc->sc_overruns = 0; 1825 if (fd->sc_opts & FDOPT_NORETRY) 1826 goto fail; 1827 1828 switch (fdc->sc_errors) { 1829 case 0: 1830 if (fdc->sc_nstat == 7 && 1831 (fdc->sc_status[0] & 0xd8) == 0x40 && 1832 (fdc->sc_status[1] & 0x2) == 0x2) { 1833 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1834 error = EROFS; 1835 goto failsilent; 1836 } 1837 /* try again */ 1838 fdc->sc_state = 1839 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1840 break; 1841 1842 case 1: case 2: case 3: 1843 /* didn't work; try recalibrating */ 1844 fdc->sc_state = DORECAL; 1845 break; 1846 1847 case 4: 1848 if (fdc->sc_nstat == 7 && 1849 fdc->sc_status[0] == 0 && 1850 fdc->sc_status[1] == 0 && 1851 fdc->sc_status[2] == 0) { 1852 /* 1853 * We've retried a few times and we've got 1854 * valid status and all three status bytes 1855 * are zero. Assume this condition is the 1856 * result of no disk loaded into the drive. 1857 */ 1858 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1859 error = ENODEV; 1860 goto failsilent; 1861 } 1862 1863 /* still no go; reset the bastard */ 1864 fdc->sc_state = DORESET; 1865 break; 1866 1867 default: 1868 fail: 1869 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1870 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1871 fd->sc_skip / FD_BSIZE(fd), 1872 (struct disklabel *)NULL); 1873 printf("\n"); 1874 fdcstatus(fdc, "controller status"); 1875 } 1876 1877 failsilent: 1878 bp->b_flags |= B_ERROR; 1879 bp->b_error = error; 1880 fdfinish(fd, bp); 1881 } 1882 fdc->sc_errors++; 1883 } 1884 1885 int 1886 fdioctl(dev, cmd, addr, flag, p) 1887 dev_t dev; 1888 u_long cmd; 1889 caddr_t addr; 1890 int flag; 1891 struct proc *p; 1892 { 1893 struct fd_softc *fd; 1894 struct fdc_softc *fdc; 1895 struct fdformat_parms *form_parms; 1896 struct fdformat_cmd *form_cmd; 1897 struct ne7_fd_formb *fd_formb; 1898 int il[FD_MAX_NSEC + 1]; 1899 int unit; 1900 int i, j; 1901 int error; 1902 1903 unit = FDUNIT(dev); 1904 if (unit >= fd_cd.cd_ndevs) 1905 return (ENXIO); 1906 1907 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1908 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1909 1910 switch (cmd) { 1911 case DIOCGDINFO: 1912 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1913 return 0; 1914 1915 case DIOCWLABEL: 1916 if ((flag & FWRITE) == 0) 1917 return EBADF; 1918 /* XXX do something */ 1919 return (0); 1920 1921 case DIOCWDINFO: 1922 if ((flag & FWRITE) == 0) 1923 return (EBADF); 1924 1925 error = setdisklabel(fd->sc_dk.dk_label, 1926 (struct disklabel *)addr, 0, 1927 fd->sc_dk.dk_cpulabel); 1928 if (error) 1929 return (error); 1930 1931 error = writedisklabel(dev, fdstrategy, 1932 fd->sc_dk.dk_label, 1933 fd->sc_dk.dk_cpulabel); 1934 return (error); 1935 1936 case DIOCLOCK: 1937 /* 1938 * Nothing to do here, really. 1939 */ 1940 return (0); 1941 1942 case DIOCEJECT: 1943 if (*(int *)addr == 0) { 1944 int part = DISKPART(dev); 1945 /* 1946 * Don't force eject: check that we are the only 1947 * partition open. If so, unlock it. 1948 */ 1949 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1950 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1951 fd->sc_dk.dk_openmask) { 1952 return (EBUSY); 1953 } 1954 } 1955 /* FALLTHROUGH */ 1956 case ODIOCEJECT: 1957 fd_do_eject(fd); 1958 return (0); 1959 1960 case FDIOCGETFORMAT: 1961 form_parms = (struct fdformat_parms *)addr; 1962 form_parms->fdformat_version = FDFORMAT_VERSION; 1963 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1964 form_parms->ncyl = fd->sc_type->cylinders; 1965 form_parms->nspt = fd->sc_type->sectrac; 1966 form_parms->ntrk = fd->sc_type->heads; 1967 form_parms->stepspercyl = fd->sc_type->step; 1968 form_parms->gaplen = fd->sc_type->gap2; 1969 form_parms->fillbyte = fd->sc_type->fillbyte; 1970 form_parms->interleave = fd->sc_type->interleave; 1971 switch (fd->sc_type->rate) { 1972 case FDC_500KBPS: 1973 form_parms->xfer_rate = 500 * 1024; 1974 break; 1975 case FDC_300KBPS: 1976 form_parms->xfer_rate = 300 * 1024; 1977 break; 1978 case FDC_250KBPS: 1979 form_parms->xfer_rate = 250 * 1024; 1980 break; 1981 default: 1982 return (EINVAL); 1983 } 1984 return (0); 1985 1986 case FDIOCSETFORMAT: 1987 if ((flag & FWRITE) == 0) 1988 return (EBADF); /* must be opened for writing */ 1989 1990 form_parms = (struct fdformat_parms *)addr; 1991 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1992 return (EINVAL);/* wrong version of formatting prog */ 1993 1994 i = form_parms->nbps >> 7; 1995 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1996 i & ~(1 << (ffs(i)-1))) 1997 /* not a power-of-two multiple of 128 */ 1998 return (EINVAL); 1999 2000 switch (form_parms->xfer_rate) { 2001 case 500 * 1024: 2002 fd->sc_type->rate = FDC_500KBPS; 2003 break; 2004 case 300 * 1024: 2005 fd->sc_type->rate = FDC_300KBPS; 2006 break; 2007 case 250 * 1024: 2008 fd->sc_type->rate = FDC_250KBPS; 2009 break; 2010 default: 2011 return (EINVAL); 2012 } 2013 2014 if (form_parms->nspt > FD_MAX_NSEC || 2015 form_parms->fillbyte > 0xff || 2016 form_parms->interleave > 0xff) 2017 return EINVAL; 2018 fd->sc_type->sectrac = form_parms->nspt; 2019 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2020 return EINVAL; 2021 fd->sc_type->heads = form_parms->ntrk; 2022 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2023 fd->sc_type->secsize = ffs(i)-1; 2024 fd->sc_type->gap2 = form_parms->gaplen; 2025 fd->sc_type->cylinders = form_parms->ncyl; 2026 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2027 form_parms->nbps / DEV_BSIZE; 2028 fd->sc_type->step = form_parms->stepspercyl; 2029 fd->sc_type->fillbyte = form_parms->fillbyte; 2030 fd->sc_type->interleave = form_parms->interleave; 2031 return (0); 2032 2033 case FDIOCFORMAT_TRACK: 2034 if((flag & FWRITE) == 0) 2035 /* must be opened for writing */ 2036 return (EBADF); 2037 form_cmd = (struct fdformat_cmd *)addr; 2038 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2039 /* wrong version of formatting prog */ 2040 return (EINVAL); 2041 2042 if (form_cmd->head >= fd->sc_type->heads || 2043 form_cmd->cylinder >= fd->sc_type->cylinders) { 2044 return (EINVAL); 2045 } 2046 2047 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2048 M_TEMP, M_NOWAIT); 2049 if (fd_formb == 0) 2050 return (ENOMEM); 2051 2052 fd_formb->head = form_cmd->head; 2053 fd_formb->cyl = form_cmd->cylinder; 2054 fd_formb->transfer_rate = fd->sc_type->rate; 2055 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2056 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2057 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2058 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2059 2060 bzero(il, sizeof il); 2061 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2062 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2063 j++; 2064 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2065 j += fd->sc_type->interleave; 2066 } 2067 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2068 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2069 fd_formb->fd_formb_headno(i) = form_cmd->head; 2070 fd_formb->fd_formb_secno(i) = il[i+1]; 2071 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2072 } 2073 2074 error = fdformat(dev, fd_formb, p); 2075 free(fd_formb, M_TEMP); 2076 return error; 2077 2078 case FDIOCGETOPTS: /* get drive options */ 2079 *(int *)addr = fd->sc_opts; 2080 return (0); 2081 2082 case FDIOCSETOPTS: /* set drive options */ 2083 fd->sc_opts = *(int *)addr; 2084 return (0); 2085 2086 #ifdef FD_DEBUG 2087 case _IO('f', 100): 2088 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2089 fdcresult(fdc); 2090 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2091 for (i = 0; i < fdc->sc_nstat; i++) 2092 printf(" 0x%x", fdc->sc_status[i]); 2093 printf(">\n"); 2094 return (0); 2095 2096 case _IOW('f', 101, int): 2097 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2098 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2099 fdconf(fdc); 2100 return (0); 2101 2102 case _IO('f', 102): 2103 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2104 fdcresult(fdc); 2105 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2106 for (i=0; i< fdc->sc_nstat; i++) 2107 printf(" 0x%x", fdc->sc_status[i]); 2108 printf(">\n"); 2109 return (0); 2110 #endif 2111 default: 2112 return (ENOTTY); 2113 } 2114 2115 #ifdef DIAGNOSTIC 2116 panic("fdioctl: impossible"); 2117 #endif 2118 } 2119 2120 int 2121 fdformat(dev, finfo, p) 2122 dev_t dev; 2123 struct ne7_fd_formb *finfo; 2124 struct proc *p; 2125 { 2126 int rv = 0, s; 2127 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2128 struct fd_type *type = fd->sc_type; 2129 struct buf *bp; 2130 2131 /* set up a buffer header for fdstrategy() */ 2132 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2133 if (bp == 0) 2134 return (ENOBUFS); 2135 2136 memset((void *)bp, 0, sizeof(struct buf)); 2137 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2138 bp->b_proc = p; 2139 bp->b_dev = dev; 2140 2141 /* 2142 * Calculate a fake blkno, so fdstrategy() would initiate a 2143 * seek to the requested cylinder. 2144 */ 2145 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2146 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2147 / DEV_BSIZE; 2148 2149 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2150 bp->b_data = (caddr_t)finfo; 2151 2152 #ifdef FD_DEBUG 2153 if (fdc_debug) { 2154 int i; 2155 2156 printf("fdformat: blkno 0x%x count %ld\n", 2157 bp->b_blkno, bp->b_bcount); 2158 2159 printf("\tcyl:\t%d\n", finfo->cyl); 2160 printf("\thead:\t%d\n", finfo->head); 2161 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2162 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2163 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2164 printf("\ttrack data:"); 2165 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2166 printf(" [c%d h%d s%d]", 2167 finfo->fd_formb_cylno(i), 2168 finfo->fd_formb_headno(i), 2169 finfo->fd_formb_secno(i) ); 2170 if (finfo->fd_formb_secsize(i) != 2) 2171 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2172 } 2173 printf("\n"); 2174 } 2175 #endif 2176 2177 /* now do the format */ 2178 fdstrategy(bp); 2179 2180 /* ...and wait for it to complete */ 2181 s = splbio(); 2182 while (!(bp->b_flags & B_DONE)) { 2183 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2184 if (rv == EWOULDBLOCK) 2185 break; 2186 } 2187 splx(s); 2188 2189 if (rv == EWOULDBLOCK) { 2190 /* timed out */ 2191 rv = EIO; 2192 biodone(bp); 2193 } 2194 if (bp->b_flags & B_ERROR) { 2195 rv = bp->b_error; 2196 } 2197 free(bp, M_TEMP); 2198 return (rv); 2199 } 2200 2201 void 2202 fdgetdisklabel(dev) 2203 dev_t dev; 2204 { 2205 int unit = FDUNIT(dev), i; 2206 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2207 struct disklabel *lp = fd->sc_dk.dk_label; 2208 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2209 2210 bzero(lp, sizeof(struct disklabel)); 2211 bzero(lp, sizeof(struct cpu_disklabel)); 2212 2213 lp->d_type = DTYPE_FLOPPY; 2214 lp->d_secsize = FD_BSIZE(fd); 2215 lp->d_secpercyl = fd->sc_type->seccyl; 2216 lp->d_nsectors = fd->sc_type->sectrac; 2217 lp->d_ncylinders = fd->sc_type->cylinders; 2218 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2219 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2220 lp->d_rpm = 3600; /* XXX like it matters... */ 2221 2222 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2223 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2224 lp->d_interleave = 1; 2225 2226 lp->d_partitions[RAW_PART].p_offset = 0; 2227 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2228 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2229 lp->d_npartitions = RAW_PART + 1; 2230 2231 lp->d_magic = DISKMAGIC; 2232 lp->d_magic2 = DISKMAGIC; 2233 lp->d_checksum = dkcksum(lp); 2234 2235 /* 2236 * Call the generic disklabel extraction routine. If there's 2237 * not a label there, fake it. 2238 */ 2239 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2240 strncpy(lp->d_packname, "default label", 2241 sizeof(lp->d_packname)); 2242 /* 2243 * Reset the partition info; it might have gotten 2244 * trashed in readdisklabel(). 2245 * 2246 * XXX Why do we have to do this? readdisklabel() 2247 * should be safe... 2248 */ 2249 for (i = 0; i < MAXPARTITIONS; ++i) { 2250 lp->d_partitions[i].p_offset = 0; 2251 if (i == RAW_PART) { 2252 lp->d_partitions[i].p_size = 2253 lp->d_secpercyl * lp->d_ncylinders; 2254 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2255 } else { 2256 lp->d_partitions[i].p_size = 0; 2257 lp->d_partitions[i].p_fstype = FS_UNUSED; 2258 } 2259 } 2260 lp->d_npartitions = RAW_PART + 1; 2261 } 2262 } 2263 2264 void 2265 fd_do_eject(fd) 2266 struct fd_softc *fd; 2267 { 2268 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2269 2270 if (CPU_ISSUN4C) { 2271 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2272 delay(10); 2273 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2274 return; 2275 } 2276 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2277 bus_space_tag_t t = fdc->sc_bustag; 2278 bus_space_handle_t h = fdc->sc_handle; 2279 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2280 2281 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2282 delay(10); 2283 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2284 return; 2285 } 2286 } 2287 2288 #ifdef MEMORY_DISK_HOOKS 2289 int fd_read_md_image __P((size_t *, caddr_t *)); 2290 #endif 2291 2292 /* ARGSUSED */ 2293 void 2294 fd_mountroot_hook(dev) 2295 struct device *dev; 2296 { 2297 int c; 2298 2299 fd_do_eject((struct fd_softc *)dev); 2300 printf("Insert filesystem floppy and press return."); 2301 for (;;) { 2302 c = cngetc(); 2303 if ((c == '\r') || (c == '\n')) { 2304 printf("\n"); 2305 break; 2306 } 2307 } 2308 } 2309 2310 #ifdef MEMORY_DISK_HOOKS 2311 2312 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2313 2314 int 2315 fd_read_md_image(sizep, addrp) 2316 size_t *sizep; 2317 caddr_t *addrp; 2318 { 2319 struct buf buf, *bp = &buf; 2320 dev_t dev; 2321 off_t offset; 2322 caddr_t addr; 2323 2324 dev = makedev(54,0); /* XXX */ 2325 2326 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2327 *addrp = addr; 2328 2329 if (fdopen(dev, 0, S_IFCHR, NULL)) 2330 panic("fd: mountroot: fdopen"); 2331 2332 offset = 0; 2333 2334 for (;;) { 2335 bp->b_dev = dev; 2336 bp->b_error = 0; 2337 bp->b_resid = 0; 2338 bp->b_proc = NULL; 2339 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2340 bp->b_blkno = btodb(offset); 2341 bp->b_bcount = DEV_BSIZE; 2342 bp->b_data = addr; 2343 fdstrategy(bp); 2344 while ((bp->b_flags & B_DONE) == 0) { 2345 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2346 } 2347 if (bp->b_error) 2348 panic("fd: mountroot: fdread error %d", bp->b_error); 2349 2350 if (bp->b_resid != 0) 2351 break; 2352 2353 addr += DEV_BSIZE; 2354 offset += DEV_BSIZE; 2355 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2356 break; 2357 } 2358 (void)fdclose(dev, 0, S_IFCHR, NULL); 2359 *sizep = offset; 2360 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2361 return (0); 2362 } 2363 #endif 2364