fd.c revision 1.97
1 /* $NetBSD: fd.c,v 1.97 2002/12/09 16:11:50 pk 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 void *sc_sicookie; /* softintr(9) cookie */ 179 }; 180 181 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 182 183 /* controller driver configuration */ 184 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 185 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 186 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 187 void fdcattach_obio __P((struct device *, struct device *, void *)); 188 189 int fdcattach __P((struct fdc_softc *, int)); 190 191 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 192 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 193 194 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 195 fdcmatch_obio, fdcattach_obio, NULL, NULL); 196 197 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 198 199 /* 200 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 201 * we tell them apart. 202 */ 203 struct fd_type { 204 int sectrac; /* sectors per track */ 205 int heads; /* number of heads */ 206 int seccyl; /* sectors per cylinder */ 207 int secsize; /* size code for sectors */ 208 int datalen; /* data len when secsize = 0 */ 209 int steprate; /* step rate and head unload time */ 210 int gap1; /* gap len between sectors */ 211 int gap2; /* formatting gap */ 212 int cylinders; /* total num of cylinders */ 213 int size; /* size of disk in sectors */ 214 int step; /* steps per cylinder */ 215 int rate; /* transfer speed code */ 216 int fillbyte; /* format fill byte */ 217 int interleave; /* interleave factor (formatting) */ 218 char *name; 219 }; 220 221 /* The order of entries in the following table is important -- BEWARE! */ 222 struct fd_type fd_types[] = { 223 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 224 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 226 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 227 }; 228 229 /* software state, per disk (with up to 4 disks per ctlr) */ 230 struct fd_softc { 231 struct device sc_dv; /* generic device info */ 232 struct disk sc_dk; /* generic disk info */ 233 234 struct fd_type *sc_deftype; /* default type descriptor */ 235 struct fd_type *sc_type; /* current type descriptor */ 236 237 struct callout sc_motoron_ch; 238 struct callout sc_motoroff_ch; 239 240 daddr_t sc_blkno; /* starting block number */ 241 int sc_bcount; /* byte count left */ 242 int sc_skip; /* bytes already transferred */ 243 int sc_nblks; /* number of blocks currently transferring */ 244 int sc_nbytes; /* number of bytes currently transferring */ 245 246 int sc_drive; /* physical unit number */ 247 int sc_flags; 248 #define FD_OPEN 0x01 /* it's open */ 249 #define FD_MOTOR 0x02 /* motor should be on */ 250 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 251 int sc_cylin; /* where we think the head is */ 252 int sc_opts; /* user-set options */ 253 254 void *sc_sdhook; /* shutdownhook cookie */ 255 256 TAILQ_ENTRY(fd_softc) sc_drivechain; 257 int sc_ops; /* I/O ops since last switch */ 258 struct bufq_state sc_q; /* pending I/O requests */ 259 int sc_active; /* number of active I/O requests */ 260 }; 261 262 /* floppy driver configuration */ 263 int fdmatch __P((struct device *, struct cfdata *, void *)); 264 void fdattach __P((struct device *, struct device *, void *)); 265 266 CFATTACH_DECL(fd, sizeof(struct fd_softc), 267 fdmatch, fdattach, NULL, NULL); 268 269 extern struct cfdriver fd_cd; 270 271 dev_type_open(fdopen); 272 dev_type_close(fdclose); 273 dev_type_read(fdread); 274 dev_type_write(fdwrite); 275 dev_type_ioctl(fdioctl); 276 dev_type_strategy(fdstrategy); 277 278 const struct bdevsw fd_bdevsw = { 279 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 280 }; 281 282 const struct cdevsw fd_cdevsw = { 283 fdopen, fdclose, fdread, fdwrite, fdioctl, 284 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 285 }; 286 287 void fdgetdisklabel __P((dev_t)); 288 int fd_get_parms __P((struct fd_softc *)); 289 void fdstart __P((struct fd_softc *)); 290 int fdprint __P((void *, const char *)); 291 292 struct dkdriver fddkdriver = { fdstrategy }; 293 294 struct fd_type *fd_nvtotype __P((char *, int, int)); 295 void fd_set_motor __P((struct fdc_softc *fdc)); 296 void fd_motor_off __P((void *arg)); 297 void fd_motor_on __P((void *arg)); 298 int fdcresult __P((struct fdc_softc *fdc)); 299 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 300 void fdcstart __P((struct fdc_softc *fdc)); 301 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 302 void fdc_reset __P((struct fdc_softc *fdc)); 303 void fdctimeout __P((void *arg)); 304 void fdcpseudointr __P((void *arg)); 305 int fdc_c_hwintr __P((void *)); 306 void fdchwintr __P((void)); 307 void fdcswintr __P((void *)); 308 int fdcstate __P((struct fdc_softc *)); 309 void fdcretry __P((struct fdc_softc *fdc)); 310 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 311 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 312 void fd_do_eject __P((struct fd_softc *)); 313 void fd_mountroot_hook __P((struct device *)); 314 static int fdconf __P((struct fdc_softc *)); 315 static void establish_chip_type __P(( 316 struct fdc_softc *, 317 bus_space_tag_t, 318 bus_addr_t, 319 bus_size_t, 320 bus_space_handle_t)); 321 322 323 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 324 325 int 326 fdcmatch_mainbus(parent, match, aux) 327 struct device *parent; 328 struct cfdata *match; 329 void *aux; 330 { 331 struct mainbus_attach_args *ma = aux; 332 333 /* 334 * Floppy controller is on mainbus on sun4c. 335 */ 336 if (!CPU_ISSUN4C) 337 return (0); 338 339 /* sun4c PROMs call the controller "fd" */ 340 if (strcmp("fd", ma->ma_name) != 0) 341 return (0); 342 343 return (bus_space_probe(ma->ma_bustag, 344 ma->ma_paddr, 345 1, /* probe size */ 346 0, /* offset */ 347 0, /* flags */ 348 NULL, NULL)); 349 } 350 351 int 352 fdcmatch_obio(parent, match, aux) 353 struct device *parent; 354 struct cfdata *match; 355 void *aux; 356 { 357 union obio_attach_args *uoba = aux; 358 struct sbus_attach_args *sa; 359 360 /* 361 * Floppy controller is on obio on sun4m. 362 */ 363 if (uoba->uoba_isobio4 != 0) 364 return (0); 365 366 sa = &uoba->uoba_sbus; 367 368 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 369 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 370 return (0); 371 372 return (bus_space_probe(sa->sa_bustag, 373 sbus_bus_addr(sa->sa_bustag, 374 sa->sa_slot, sa->sa_offset), 375 1, /* probe size */ 376 0, /* offset */ 377 0, /* flags */ 378 NULL, NULL)); 379 } 380 381 static void 382 establish_chip_type(fdc, tag, addr, size, handle) 383 struct fdc_softc *fdc; 384 bus_space_tag_t tag; 385 bus_addr_t addr; 386 bus_size_t size; 387 bus_space_handle_t handle; 388 { 389 u_int8_t v; 390 391 /* 392 * This hack from Chris Torek: apparently DOR really 393 * addresses MSR/DRS on a 82072. 394 * We used to rely on the VERSION command to tell the 395 * difference (which did not work). 396 */ 397 398 /* First, check the size of the register bank */ 399 if (size < 8) 400 /* It isn't a 82077 */ 401 return; 402 403 /* Then probe the DOR register offset */ 404 if (bus_space_probe(tag, addr, 405 1, /* probe size */ 406 FDREG77_DOR, /* offset */ 407 0, /* flags */ 408 NULL, NULL) == 0) { 409 410 /* It isn't a 82077 */ 411 return; 412 } 413 414 v = bus_space_read_1(tag, handle, FDREG77_DOR); 415 if (v == NE7_RQM) { 416 /* 417 * Value in DOR looks like it's really MSR 418 */ 419 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 420 v = bus_space_read_1(tag, handle, FDREG77_DOR); 421 if (v == NE7_RQM) { 422 /* 423 * The value in the DOR didn't stick; 424 * it isn't a 82077 425 */ 426 return; 427 } 428 } 429 430 fdc->sc_flags |= FDC_82077; 431 } 432 433 /* 434 * Arguments passed between fdcattach and fdprobe. 435 */ 436 struct fdc_attach_args { 437 int fa_drive; 438 struct fd_type *fa_deftype; 439 }; 440 441 /* 442 * Print the location of a disk drive (called just before attaching the 443 * the drive). If `fdc' is not NULL, the drive was found but was not 444 * in the system config file; print the drive name as well. 445 * Return QUIET (config_find ignores this if the device was configured) to 446 * avoid printing `fdN not configured' messages. 447 */ 448 int 449 fdprint(aux, fdc) 450 void *aux; 451 const char *fdc; 452 { 453 register struct fdc_attach_args *fa = aux; 454 455 if (!fdc) 456 printf(" drive %d", fa->fa_drive); 457 return (QUIET); 458 } 459 460 /* 461 * Configure several parameters and features on the FDC. 462 * Return 0 on success. 463 */ 464 static int 465 fdconf(fdc) 466 struct fdc_softc *fdc; 467 { 468 int vroom; 469 470 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 471 return (-1); 472 473 /* 474 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 475 * the PROM thinks is appropriate. 476 */ 477 if ((vroom = fdc->sc_status[7]) == 0) 478 vroom = 0x64; 479 480 /* Configure controller to use FIFO and Implied Seek */ 481 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 482 return (-1); 483 if (fdc_wrfifo(fdc, vroom) != 0) 484 return (-1); 485 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 486 return (-1); 487 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 488 return (-1); 489 /* No result phase for the NE7CMD_CFG command */ 490 491 if ((fdc->sc_flags & FDC_82077) != 0) { 492 /* Lock configuration across soft resets. */ 493 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 494 fdcresult(fdc) != 1) { 495 #ifdef DEBUG 496 printf("fdconf: CFGLOCK failed"); 497 #endif 498 return (-1); 499 } 500 } 501 502 return (0); 503 #if 0 504 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 505 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 506 if (fdc_debug) 507 printf("[version cmd]"); 508 } 509 #endif 510 } 511 512 void 513 fdcattach_mainbus(parent, self, aux) 514 struct device *parent, *self; 515 void *aux; 516 { 517 struct fdc_softc *fdc = (void *)self; 518 struct mainbus_attach_args *ma = aux; 519 520 fdc->sc_bustag = ma->ma_bustag; 521 522 if (bus_space_map( 523 ma->ma_bustag, 524 ma->ma_paddr, 525 ma->ma_size, 526 BUS_SPACE_MAP_LINEAR, 527 &fdc->sc_handle) != 0) { 528 printf("%s: cannot map registers\n", self->dv_xname); 529 return; 530 } 531 532 establish_chip_type(fdc, 533 ma->ma_bustag, 534 ma->ma_paddr, 535 ma->ma_size, 536 fdc->sc_handle); 537 538 if (fdcattach(fdc, ma->ma_pri) != 0) 539 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 540 } 541 542 void 543 fdcattach_obio(parent, self, aux) 544 struct device *parent, *self; 545 void *aux; 546 { 547 struct fdc_softc *fdc = (void *)self; 548 union obio_attach_args *uoba = aux; 549 struct sbus_attach_args *sa = &uoba->uoba_sbus; 550 551 if (sa->sa_nintr == 0) { 552 printf(": no interrupt line configured\n"); 553 return; 554 } 555 556 fdc->sc_bustag = sa->sa_bustag; 557 558 if (sbus_bus_map(sa->sa_bustag, 559 sa->sa_slot, sa->sa_offset, sa->sa_size, 560 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 561 printf("%s: cannot map control registers\n", 562 self->dv_xname); 563 return; 564 } 565 566 establish_chip_type(fdc, 567 sa->sa_bustag, 568 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 569 sa->sa_size, 570 fdc->sc_handle); 571 572 if (strcmp(PROM_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 573 printf(": no drives attached\n"); 574 return; 575 } 576 577 if (fdcattach(fdc, sa->sa_pri) != 0) 578 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 579 } 580 581 int 582 fdcattach(fdc, pri) 583 struct fdc_softc *fdc; 584 int pri; 585 { 586 struct fdc_attach_args fa; 587 int drive_attached; 588 char code; 589 590 callout_init(&fdc->sc_timo_ch); 591 callout_init(&fdc->sc_intr_ch); 592 593 fdc->sc_state = DEVIDLE; 594 fdc->sc_itask = FDC_ITASK_NONE; 595 fdc->sc_istatus = FDC_ISTATUS_NONE; 596 fdc->sc_flags |= FDC_EIS; 597 TAILQ_INIT(&fdc->sc_drives); 598 599 if ((fdc->sc_flags & FDC_82077) != 0) { 600 fdc->sc_reg_msr = FDREG77_MSR; 601 fdc->sc_reg_fifo = FDREG77_FIFO; 602 fdc->sc_reg_dor = FDREG77_DOR; 603 code = '7'; 604 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 605 } else { 606 fdc->sc_reg_msr = FDREG72_MSR; 607 fdc->sc_reg_fifo = FDREG72_FIFO; 608 fdc->sc_reg_dor = 0; 609 code = '2'; 610 } 611 612 /* 613 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 614 * Note: CFG_EFIFO is active-low, initial threshold value: 8 615 */ 616 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 617 if (fdconf(fdc) != 0) { 618 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 619 return (-1); 620 } 621 622 fdciop = &fdc->sc_io; 623 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 624 BUS_INTR_ESTABLISH_FASTTRAP, 625 (int (*) __P((void *)))fdchwintr, NULL) == NULL) { 626 627 printf("%s: notice: no fast trap handler slot available\n", 628 fdc->sc_dev.dv_xname); 629 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 0, 630 fdc_c_hwintr, fdc) == NULL) { 631 printf("%s: cannot register interrupt handler\n", 632 fdc->sc_dev.dv_xname); 633 return (-1); 634 } 635 } 636 637 fdc->sc_sicookie = softintr_establish(IPL_SOFTFDC, fdcswintr, fdc); 638 if (fdc->sc_sicookie == NULL) { 639 printf("\n%s: cannot register soft interrupt handler\n", 640 fdc->sc_dev.dv_xname); 641 return (-1); 642 } 643 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 644 645 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 646 fdc->sc_dev.dv_xname, "intr"); 647 648 /* physical limit: four drives per controller. */ 649 drive_attached = 0; 650 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 651 fa.fa_deftype = NULL; /* unknown */ 652 fa.fa_deftype = &fd_types[0]; /* XXX */ 653 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 654 drive_attached = 1; 655 } 656 657 if (drive_attached == 0) { 658 /* XXX - dis-establish interrupts here */ 659 /* return (-1); */ 660 } 661 662 return (0); 663 } 664 665 int 666 fdmatch(parent, match, aux) 667 struct device *parent; 668 struct cfdata *match; 669 void *aux; 670 { 671 struct fdc_softc *fdc = (void *)parent; 672 bus_space_tag_t t = fdc->sc_bustag; 673 bus_space_handle_t h = fdc->sc_handle; 674 struct fdc_attach_args *fa = aux; 675 int drive = fa->fa_drive; 676 int n, ok; 677 678 if (drive > 0) 679 /* XXX - for now, punt on more than one drive */ 680 return (0); 681 682 if ((fdc->sc_flags & FDC_82077) != 0) { 683 /* select drive and turn on motor */ 684 bus_space_write_1(t, h, fdc->sc_reg_dor, 685 drive | FDO_FRST | FDO_MOEN(drive)); 686 /* wait for motor to spin up */ 687 delay(250000); 688 } else { 689 auxregbisc(AUXIO4C_FDS, 0); 690 } 691 fdc->sc_nstat = 0; 692 fdc_wrfifo(fdc, NE7CMD_RECAL); 693 fdc_wrfifo(fdc, drive); 694 695 /* Wait for recalibration to complete */ 696 for (n = 0; n < 10000; n++) { 697 u_int8_t v; 698 699 delay(1000); 700 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 701 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 702 /* wait a bit longer till device *really* is ready */ 703 delay(100000); 704 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 705 break; 706 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 707 /* 708 * Got `invalid command'; we interpret it 709 * to mean that the re-calibrate hasn't in 710 * fact finished yet 711 */ 712 continue; 713 break; 714 } 715 } 716 n = fdc->sc_nstat; 717 #ifdef FD_DEBUG 718 if (fdc_debug) { 719 int i; 720 printf("fdprobe: %d stati:", n); 721 for (i = 0; i < n; i++) 722 printf(" 0x%x", fdc->sc_status[i]); 723 printf("\n"); 724 } 725 #endif 726 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 727 728 /* turn off motor */ 729 if ((fdc->sc_flags & FDC_82077) != 0) { 730 /* deselect drive and turn motor off */ 731 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 732 } else { 733 auxregbisc(0, AUXIO4C_FDS); 734 } 735 736 return (ok); 737 } 738 739 /* 740 * Controller is working, and drive responded. Attach it. 741 */ 742 void 743 fdattach(parent, self, aux) 744 struct device *parent, *self; 745 void *aux; 746 { 747 struct fdc_softc *fdc = (void *)parent; 748 struct fd_softc *fd = (void *)self; 749 struct fdc_attach_args *fa = aux; 750 struct fd_type *type = fa->fa_deftype; 751 int drive = fa->fa_drive; 752 753 callout_init(&fd->sc_motoron_ch); 754 callout_init(&fd->sc_motoroff_ch); 755 756 /* XXX Allow `flags' to override device type? */ 757 758 if (type) 759 printf(": %s %d cyl, %d head, %d sec\n", type->name, 760 type->cylinders, type->heads, type->sectrac); 761 else 762 printf(": density unknown\n"); 763 764 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 765 fd->sc_cylin = -1; 766 fd->sc_drive = drive; 767 fd->sc_deftype = type; 768 fdc->sc_fd[drive] = fd; 769 770 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 771 fdc_wrfifo(fdc, type->steprate); 772 /* XXX head load time == 6ms */ 773 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 774 775 /* 776 * Initialize and attach the disk structure. 777 */ 778 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 779 fd->sc_dk.dk_driver = &fddkdriver; 780 disk_attach(&fd->sc_dk); 781 782 /* 783 * Establish a mountroot_hook anyway in case we booted 784 * with RB_ASKNAME and get selected as the boot device. 785 */ 786 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 787 788 /* Make sure the drive motor gets turned off at shutdown time. */ 789 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 790 } 791 792 __inline struct fd_type * 793 fd_dev_to_type(fd, dev) 794 struct fd_softc *fd; 795 dev_t dev; 796 { 797 int type = FDTYPE(dev); 798 799 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 800 return (NULL); 801 return (type ? &fd_types[type - 1] : fd->sc_deftype); 802 } 803 804 void 805 fdstrategy(bp) 806 register struct buf *bp; /* IO operation to perform */ 807 { 808 struct fd_softc *fd; 809 int unit = FDUNIT(bp->b_dev); 810 int sz; 811 int s; 812 813 /* Valid unit, controller, and request? */ 814 if (unit >= fd_cd.cd_ndevs || 815 (fd = fd_cd.cd_devs[unit]) == 0 || 816 bp->b_blkno < 0 || 817 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 818 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 819 (bp->b_flags & B_FORMAT) == 0)) { 820 bp->b_error = EINVAL; 821 goto bad; 822 } 823 824 /* If it's a null transfer, return immediately. */ 825 if (bp->b_bcount == 0) 826 goto done; 827 828 sz = howmany(bp->b_bcount, DEV_BSIZE); 829 830 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 831 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 832 - bp->b_blkno; 833 if (sz == 0) { 834 /* If exactly at end of disk, return EOF. */ 835 bp->b_resid = bp->b_bcount; 836 goto done; 837 } 838 if (sz < 0) { 839 /* If past end of disk, return EINVAL. */ 840 bp->b_error = EINVAL; 841 goto bad; 842 } 843 /* Otherwise, truncate request. */ 844 bp->b_bcount = sz << DEV_BSHIFT; 845 } 846 847 bp->b_rawblkno = bp->b_blkno; 848 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 849 (FD_BSIZE(fd) * fd->sc_type->seccyl); 850 851 #ifdef FD_DEBUG 852 if (fdc_debug > 1) 853 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 854 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 855 #endif 856 857 /* Queue transfer on drive, activate drive and controller if idle. */ 858 s = splbio(); 859 BUFQ_PUT(&fd->sc_q, bp); 860 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 861 if (fd->sc_active == 0) 862 fdstart(fd); 863 #ifdef DIAGNOSTIC 864 else { 865 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 866 if (fdc->sc_state == DEVIDLE) { 867 printf("fdstrategy: controller inactive\n"); 868 fdcstart(fdc); 869 } 870 } 871 #endif 872 splx(s); 873 return; 874 875 bad: 876 bp->b_flags |= B_ERROR; 877 done: 878 /* Toss transfer; we're done early. */ 879 biodone(bp); 880 } 881 882 void 883 fdstart(fd) 884 struct fd_softc *fd; 885 { 886 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 887 int active = fdc->sc_drives.tqh_first != 0; 888 889 /* Link into controller queue. */ 890 fd->sc_active = 1; 891 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 892 893 /* If controller not already active, start it. */ 894 if (!active) 895 fdcstart(fdc); 896 } 897 898 void 899 fdfinish(fd, bp) 900 struct fd_softc *fd; 901 struct buf *bp; 902 { 903 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 904 905 /* 906 * Move this drive to the end of the queue to give others a `fair' 907 * chance. We only force a switch if N operations are completed while 908 * another drive is waiting to be serviced, since there is a long motor 909 * startup delay whenever we switch. 910 */ 911 (void)BUFQ_GET(&fd->sc_q); 912 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 913 fd->sc_ops = 0; 914 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 915 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 916 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 917 } else 918 fd->sc_active = 0; 919 } 920 bp->b_resid = fd->sc_bcount; 921 fd->sc_skip = 0; 922 923 biodone(bp); 924 /* turn off motor 5s from now */ 925 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 926 fdc->sc_state = DEVIDLE; 927 } 928 929 void 930 fdc_reset(fdc) 931 struct fdc_softc *fdc; 932 { 933 bus_space_tag_t t = fdc->sc_bustag; 934 bus_space_handle_t h = fdc->sc_handle; 935 936 if ((fdc->sc_flags & FDC_82077) != 0) { 937 bus_space_write_1(t, h, fdc->sc_reg_dor, 938 FDO_FDMAEN | FDO_MOEN(0)); 939 } 940 941 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 942 delay(10); 943 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 944 945 if ((fdc->sc_flags & FDC_82077) != 0) { 946 bus_space_write_1(t, h, fdc->sc_reg_dor, 947 FDO_FRST | FDO_FDMAEN | FDO_DS); 948 } 949 #ifdef FD_DEBUG 950 if (fdc_debug) 951 printf("fdc reset\n"); 952 #endif 953 } 954 955 void 956 fd_set_motor(fdc) 957 struct fdc_softc *fdc; 958 { 959 struct fd_softc *fd; 960 u_char status; 961 int n; 962 963 if ((fdc->sc_flags & FDC_82077) != 0) { 964 status = FDO_FRST | FDO_FDMAEN; 965 if ((fd = fdc->sc_drives.tqh_first) != NULL) 966 status |= fd->sc_drive; 967 968 for (n = 0; n < 4; n++) 969 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 970 status |= FDO_MOEN(n); 971 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 972 fdc->sc_reg_dor, status); 973 } else { 974 975 for (n = 0; n < 4; n++) { 976 if ((fd = fdc->sc_fd[n]) != NULL && 977 (fd->sc_flags & FD_MOTOR) != 0) { 978 auxregbisc(AUXIO4C_FDS, 0); 979 return; 980 } 981 } 982 auxregbisc(0, AUXIO4C_FDS); 983 } 984 } 985 986 void 987 fd_motor_off(arg) 988 void *arg; 989 { 990 struct fd_softc *fd = arg; 991 int s; 992 993 s = splbio(); 994 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 995 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 996 splx(s); 997 } 998 999 void 1000 fd_motor_on(arg) 1001 void *arg; 1002 { 1003 struct fd_softc *fd = arg; 1004 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1005 int s; 1006 1007 s = splbio(); 1008 fd->sc_flags &= ~FD_MOTOR_WAIT; 1009 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1010 (void) fdcstate(fdc); 1011 splx(s); 1012 } 1013 1014 /* 1015 * Get status bytes off the FDC after a command has finished 1016 * Returns the number of status bytes read; -1 on error. 1017 * The return value is also stored in `sc_nstat'. 1018 */ 1019 int 1020 fdcresult(fdc) 1021 struct fdc_softc *fdc; 1022 { 1023 bus_space_tag_t t = fdc->sc_bustag; 1024 bus_space_handle_t h = fdc->sc_handle; 1025 int j, n = 0; 1026 1027 for (j = 10000; j; j--) { 1028 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1029 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1030 if (v == NE7_RQM) 1031 return (fdc->sc_nstat = n); 1032 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1033 if (n >= sizeof(fdc->sc_status)) { 1034 log(LOG_ERR, "fdcresult: overrun\n"); 1035 return (-1); 1036 } 1037 fdc->sc_status[n++] = 1038 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1039 } else 1040 delay(1); 1041 } 1042 1043 log(LOG_ERR, "fdcresult: timeout\n"); 1044 return (fdc->sc_nstat = -1); 1045 } 1046 1047 /* 1048 * Write a command byte to the FDC. 1049 * Returns 0 on success; -1 on failure (i.e. timeout) 1050 */ 1051 int 1052 fdc_wrfifo(fdc, x) 1053 struct fdc_softc *fdc; 1054 u_int8_t x; 1055 { 1056 bus_space_tag_t t = fdc->sc_bustag; 1057 bus_space_handle_t h = fdc->sc_handle; 1058 int i; 1059 1060 for (i = 100000; i-- > 0;) { 1061 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1062 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1063 /* The chip is ready */ 1064 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1065 return (0); 1066 } 1067 delay(1); 1068 } 1069 return (-1); 1070 } 1071 1072 int 1073 fdopen(dev, flags, fmt, p) 1074 dev_t dev; 1075 int flags, fmt; 1076 struct proc *p; 1077 { 1078 int unit, pmask; 1079 struct fd_softc *fd; 1080 struct fd_type *type; 1081 1082 unit = FDUNIT(dev); 1083 if (unit >= fd_cd.cd_ndevs) 1084 return (ENXIO); 1085 fd = fd_cd.cd_devs[unit]; 1086 if (fd == NULL) 1087 return (ENXIO); 1088 type = fd_dev_to_type(fd, dev); 1089 if (type == NULL) 1090 return (ENXIO); 1091 1092 if ((fd->sc_flags & FD_OPEN) != 0 && 1093 fd->sc_type != type) 1094 return (EBUSY); 1095 1096 fd->sc_type = type; 1097 fd->sc_cylin = -1; 1098 fd->sc_flags |= FD_OPEN; 1099 1100 /* 1101 * Only update the disklabel if we're not open anywhere else. 1102 */ 1103 if (fd->sc_dk.dk_openmask == 0) 1104 fdgetdisklabel(dev); 1105 1106 pmask = (1 << DISKPART(dev)); 1107 1108 switch (fmt) { 1109 case S_IFCHR: 1110 fd->sc_dk.dk_copenmask |= pmask; 1111 break; 1112 1113 case S_IFBLK: 1114 fd->sc_dk.dk_bopenmask |= pmask; 1115 break; 1116 } 1117 fd->sc_dk.dk_openmask = 1118 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1119 1120 return (0); 1121 } 1122 1123 int 1124 fdclose(dev, flags, fmt, p) 1125 dev_t dev; 1126 int flags, fmt; 1127 struct proc *p; 1128 { 1129 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1130 int pmask = (1 << DISKPART(dev)); 1131 1132 fd->sc_flags &= ~FD_OPEN; 1133 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1134 1135 switch (fmt) { 1136 case S_IFCHR: 1137 fd->sc_dk.dk_copenmask &= ~pmask; 1138 break; 1139 1140 case S_IFBLK: 1141 fd->sc_dk.dk_bopenmask &= ~pmask; 1142 break; 1143 } 1144 fd->sc_dk.dk_openmask = 1145 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1146 1147 return (0); 1148 } 1149 1150 int 1151 fdread(dev, uio, flag) 1152 dev_t dev; 1153 struct uio *uio; 1154 int flag; 1155 { 1156 1157 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1158 } 1159 1160 int 1161 fdwrite(dev, uio, flag) 1162 dev_t dev; 1163 struct uio *uio; 1164 int flag; 1165 { 1166 1167 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1168 } 1169 1170 void 1171 fdcstart(fdc) 1172 struct fdc_softc *fdc; 1173 { 1174 1175 #ifdef DIAGNOSTIC 1176 /* only got here if controller's drive queue was inactive; should 1177 be in idle state */ 1178 if (fdc->sc_state != DEVIDLE) { 1179 printf("fdcstart: not idle\n"); 1180 return; 1181 } 1182 #endif 1183 (void) fdcstate(fdc); 1184 } 1185 1186 void 1187 fdcstatus(fdc, s) 1188 struct fdc_softc *fdc; 1189 char *s; 1190 { 1191 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1192 int n; 1193 char bits[64]; 1194 1195 /* Just print last status */ 1196 n = fdc->sc_nstat; 1197 1198 #if 0 1199 /* 1200 * A 82072 seems to return <invalid command> on 1201 * gratuitous Sense Interrupt commands. 1202 */ 1203 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1204 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1205 (void) fdcresult(fdc); 1206 n = 2; 1207 } 1208 #endif 1209 1210 printf("%s: %s: state %d", 1211 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1212 1213 switch (n) { 1214 case 0: 1215 printf("\n"); 1216 break; 1217 case 2: 1218 printf(" (st0 %s cyl %d)\n", 1219 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1220 bits, sizeof(bits)), fdc->sc_status[1]); 1221 break; 1222 case 7: 1223 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1224 NE7_ST0BITS, bits, sizeof(bits))); 1225 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1226 NE7_ST1BITS, bits, sizeof(bits))); 1227 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1228 NE7_ST2BITS, bits, sizeof(bits))); 1229 printf(" cyl %d head %d sec %d)\n", 1230 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1231 break; 1232 #ifdef DIAGNOSTIC 1233 default: 1234 printf(" fdcstatus: weird size: %d\n", n); 1235 break; 1236 #endif 1237 } 1238 } 1239 1240 void 1241 fdctimeout(arg) 1242 void *arg; 1243 { 1244 struct fdc_softc *fdc = arg; 1245 struct fd_softc *fd; 1246 int s; 1247 1248 s = splbio(); 1249 fd = fdc->sc_drives.tqh_first; 1250 if (fd == NULL) { 1251 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1252 fdc->sc_dev.dv_xname, 1253 fdc->sc_state, fdc->sc_istatus); 1254 fdc->sc_state = DEVIDLE; 1255 goto out; 1256 } 1257 1258 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1259 fdc->sc_state++; 1260 else 1261 fdc->sc_state = DEVIDLE; 1262 1263 (void) fdcstate(fdc); 1264 out: 1265 splx(s); 1266 1267 } 1268 1269 void 1270 fdcpseudointr(arg) 1271 void *arg; 1272 { 1273 struct fdc_softc *fdc = arg; 1274 int s; 1275 1276 /* Just ensure it has the right spl. */ 1277 s = splbio(); 1278 (void) fdcstate(fdc); 1279 splx(s); 1280 } 1281 1282 1283 /* 1284 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1285 * handler is available. Unfortunately, we have no reliable way to 1286 * determine that the interrupt really came from the floppy controller; 1287 * just hope that the other devices that share this interrupt level 1288 * can do better.. 1289 */ 1290 int 1291 fdc_c_hwintr(arg) 1292 void *arg; 1293 { 1294 struct fdc_softc *fdc = arg; 1295 bus_space_tag_t t = fdc->sc_bustag; 1296 bus_space_handle_t h = fdc->sc_handle; 1297 1298 switch (fdc->sc_itask) { 1299 case FDC_ITASK_NONE: 1300 return (0); 1301 case FDC_ITASK_SENSEI: 1302 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1303 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1304 else 1305 fdc->sc_istatus = FDC_ISTATUS_DONE; 1306 softintr_schedule(fdc->sc_sicookie); 1307 return (1); 1308 case FDC_ITASK_DMA: 1309 /* Proceed with pseudo-dma below */ 1310 break; 1311 default: 1312 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1313 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1314 softintr_schedule(fdc->sc_sicookie); 1315 return (1); 1316 } 1317 1318 /* 1319 * Pseudo DMA in progress 1320 */ 1321 for (;;) { 1322 u_int8_t msr; 1323 1324 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1325 1326 if ((msr & NE7_RQM) == 0) 1327 /* That's all this round */ 1328 break; 1329 1330 if ((msr & NE7_NDM) == 0) { 1331 fdcresult(fdc); 1332 fdc->sc_istatus = FDC_ISTATUS_DONE; 1333 softintr_schedule(fdc->sc_sicookie); 1334 #ifdef FD_DEBUG 1335 if (fdc_debug > 1) 1336 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1337 #endif 1338 break; 1339 } 1340 1341 /* Another byte can be transferred */ 1342 if ((msr & NE7_DIO) != 0) 1343 *fdc->sc_data = 1344 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1345 else 1346 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1347 *fdc->sc_data); 1348 1349 fdc->sc_data++; 1350 if (--fdc->sc_tc == 0) { 1351 fdc->sc_istatus = FDC_ISTATUS_DONE; 1352 FTC_FLIP; 1353 fdcresult(fdc); 1354 softintr_schedule(fdc->sc_sicookie); 1355 break; 1356 } 1357 } 1358 return (1); 1359 } 1360 1361 void 1362 fdcswintr(arg) 1363 void *arg; 1364 { 1365 struct fdc_softc *fdc = arg; 1366 int s; 1367 1368 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1369 /* This (software) interrupt is not for us */ 1370 return; 1371 1372 switch (fdc->sc_istatus) { 1373 case FDC_ISTATUS_ERROR: 1374 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1375 break; 1376 case FDC_ISTATUS_SPURIOUS: 1377 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1378 break; 1379 } 1380 1381 s = splbio(); 1382 fdcstate(fdc); 1383 splx(s); 1384 return; 1385 } 1386 1387 int 1388 fdcstate(fdc) 1389 struct fdc_softc *fdc; 1390 { 1391 #define st0 fdc->sc_status[0] 1392 #define st1 fdc->sc_status[1] 1393 #define cyl fdc->sc_status[1] 1394 #define FDC_WRFIFO(fdc, c) do { \ 1395 if (fdc_wrfifo(fdc, (c))) { \ 1396 goto xxx; \ 1397 } \ 1398 } while(0) 1399 1400 struct fd_softc *fd; 1401 struct buf *bp; 1402 int read, head, sec, nblks; 1403 struct fd_type *type; 1404 struct ne7_fd_formb *finfo = NULL; 1405 1406 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1407 /* Prevent loop if the reset sequence produces errors */ 1408 if (fdc->sc_state != RESETCOMPLETE && 1409 fdc->sc_state != RECALWAIT && 1410 fdc->sc_state != RECALCOMPLETE) 1411 fdc->sc_state = DORESET; 1412 } 1413 1414 /* Clear I task/status field */ 1415 fdc->sc_istatus = FDC_ISTATUS_NONE; 1416 fdc->sc_itask = FDC_ITASK_NONE; 1417 1418 loop: 1419 /* Is there a drive for the controller to do a transfer with? */ 1420 fd = fdc->sc_drives.tqh_first; 1421 if (fd == NULL) { 1422 fdc->sc_state = DEVIDLE; 1423 return (0); 1424 } 1425 1426 /* Is there a transfer to this drive? If not, deactivate drive. */ 1427 bp = BUFQ_PEEK(&fd->sc_q); 1428 if (bp == NULL) { 1429 fd->sc_ops = 0; 1430 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1431 fd->sc_active = 0; 1432 goto loop; 1433 } 1434 1435 if (bp->b_flags & B_FORMAT) 1436 finfo = (struct ne7_fd_formb *)bp->b_data; 1437 1438 switch (fdc->sc_state) { 1439 case DEVIDLE: 1440 fdc->sc_errors = 0; 1441 fd->sc_skip = 0; 1442 fd->sc_bcount = bp->b_bcount; 1443 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1444 callout_stop(&fd->sc_motoroff_ch); 1445 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1446 fdc->sc_state = MOTORWAIT; 1447 return (1); 1448 } 1449 if ((fd->sc_flags & FD_MOTOR) == 0) { 1450 /* Turn on the motor, being careful about pairing. */ 1451 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1452 if (ofd && ofd->sc_flags & FD_MOTOR) { 1453 callout_stop(&ofd->sc_motoroff_ch); 1454 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1455 } 1456 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1457 fd_set_motor(fdc); 1458 fdc->sc_state = MOTORWAIT; 1459 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1460 /* Allow .25s for motor to stabilize. */ 1461 callout_reset(&fd->sc_motoron_ch, hz / 4, 1462 fd_motor_on, fd); 1463 } else { 1464 fd->sc_flags &= ~FD_MOTOR_WAIT; 1465 goto loop; 1466 } 1467 return (1); 1468 } 1469 /* Make sure the right drive is selected. */ 1470 fd_set_motor(fdc); 1471 1472 /*FALLTHROUGH*/ 1473 case DOSEEK: 1474 doseek: 1475 if ((fdc->sc_flags & FDC_EIS) && 1476 (bp->b_flags & B_FORMAT) == 0) { 1477 fd->sc_cylin = bp->b_cylinder; 1478 /* We use implied seek */ 1479 goto doio; 1480 } 1481 1482 if (fd->sc_cylin == bp->b_cylinder) 1483 goto doio; 1484 1485 fd->sc_cylin = -1; 1486 fdc->sc_state = SEEKWAIT; 1487 fdc->sc_nstat = 0; 1488 1489 fd->sc_dk.dk_seek++; 1490 1491 disk_busy(&fd->sc_dk); 1492 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1493 1494 /* specify command */ 1495 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1496 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1497 /* XXX head load time == 6ms */ 1498 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1499 1500 fdc->sc_itask = FDC_ITASK_SENSEI; 1501 /* seek function */ 1502 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1503 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1504 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1505 return (1); 1506 1507 case DOIO: 1508 doio: 1509 if (finfo != NULL) 1510 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1511 (char *)finfo; 1512 type = fd->sc_type; 1513 sec = fd->sc_blkno % type->seccyl; 1514 nblks = type->seccyl - sec; 1515 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1516 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1517 fd->sc_nblks = nblks; 1518 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1519 head = sec / type->sectrac; 1520 sec -= head * type->sectrac; 1521 #ifdef DIAGNOSTIC 1522 {int block; 1523 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1524 if (block != fd->sc_blkno) { 1525 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1526 #ifdef DDB 1527 Debugger(); 1528 #endif 1529 }} 1530 #endif 1531 read = bp->b_flags & B_READ; 1532 1533 /* Setup for pseudo DMA */ 1534 fdc->sc_data = bp->b_data + fd->sc_skip; 1535 fdc->sc_tc = fd->sc_nbytes; 1536 1537 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1538 fdc->sc_reg_drs, type->rate); 1539 #ifdef FD_DEBUG 1540 if (fdc_debug > 1) 1541 printf("fdcstate: doio: %s drive %d " 1542 "track %d head %d sec %d nblks %d\n", 1543 finfo ? "format" : 1544 (read ? "read" : "write"), 1545 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1546 #endif 1547 fdc->sc_state = IOCOMPLETE; 1548 fdc->sc_itask = FDC_ITASK_DMA; 1549 fdc->sc_nstat = 0; 1550 1551 disk_busy(&fd->sc_dk); 1552 1553 /* allow 3 seconds for operation */ 1554 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1555 1556 if (finfo != NULL) { 1557 /* formatting */ 1558 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1559 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1560 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1561 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1562 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1563 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1564 } else { 1565 if (read) 1566 FDC_WRFIFO(fdc, NE7CMD_READ); 1567 else 1568 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1569 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1570 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1571 FDC_WRFIFO(fdc, head); 1572 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1573 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1574 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1575 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1576 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1577 } 1578 1579 return (1); /* will return later */ 1580 1581 case SEEKWAIT: 1582 callout_stop(&fdc->sc_timo_ch); 1583 fdc->sc_state = SEEKCOMPLETE; 1584 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1585 /* allow 1/50 second for heads to settle */ 1586 callout_reset(&fdc->sc_intr_ch, hz / 50, 1587 fdcpseudointr, fdc); 1588 return (1); /* will return later */ 1589 } 1590 /*FALLTHROUGH*/ 1591 case SEEKCOMPLETE: 1592 /* no data on seek */ 1593 disk_unbusy(&fd->sc_dk, 0, 0); 1594 1595 /* Make sure seek really happened. */ 1596 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1597 cyl != bp->b_cylinder * fd->sc_type->step) { 1598 #ifdef FD_DEBUG 1599 if (fdc_debug) 1600 fdcstatus(fdc, "seek failed"); 1601 #endif 1602 fdcretry(fdc); 1603 goto loop; 1604 } 1605 fd->sc_cylin = bp->b_cylinder; 1606 goto doio; 1607 1608 case IOTIMEDOUT: 1609 /* 1610 * Try to abort the I/O operation without resetting 1611 * the chip first. Poke TC and arrange to pick up 1612 * the timed out I/O command's status. 1613 */ 1614 fdc->sc_itask = FDC_ITASK_RESULT; 1615 fdc->sc_state = IOCLEANUPWAIT; 1616 fdc->sc_nstat = 0; 1617 /* 1/10 second should be enough */ 1618 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1619 FTC_FLIP; 1620 return (1); 1621 1622 case IOCLEANUPTIMEDOUT: 1623 case SEEKTIMEDOUT: 1624 case RECALTIMEDOUT: 1625 case RESETTIMEDOUT: 1626 fdcstatus(fdc, "timeout"); 1627 1628 /* All other timeouts always roll through to a chip reset */ 1629 fdcretry(fdc); 1630 1631 /* Force reset, no matter what fdcretry() says */ 1632 fdc->sc_state = DORESET; 1633 goto loop; 1634 1635 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1636 callout_stop(&fdc->sc_timo_ch); 1637 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1638 (bp->b_flags & B_READ)); 1639 fdcretry(fdc); 1640 goto loop; 1641 1642 case IOCOMPLETE: /* IO DONE, post-analyze */ 1643 callout_stop(&fdc->sc_timo_ch); 1644 1645 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1646 (bp->b_flags & B_READ)); 1647 1648 if (fdc->sc_nstat != 7 || st1 != 0 || 1649 ((st0 & 0xf8) != 0 && 1650 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1651 #ifdef FD_DEBUG 1652 if (fdc_debug) { 1653 fdcstatus(fdc, 1654 bp->b_flags & B_READ 1655 ? "read failed" : "write failed"); 1656 printf("blkno %d nblks %d nstat %d tc %d\n", 1657 fd->sc_blkno, fd->sc_nblks, 1658 fdc->sc_nstat, fdc->sc_tc); 1659 } 1660 #endif 1661 if (fdc->sc_nstat == 7 && 1662 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1663 1664 /* 1665 * Silently retry overruns if no other 1666 * error bit is set. Adjust threshold. 1667 */ 1668 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1669 if (thr < 15) { 1670 thr++; 1671 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1672 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1673 #ifdef FD_DEBUG 1674 if (fdc_debug) 1675 printf("fdc: %d -> threshold\n", thr); 1676 #endif 1677 fdconf(fdc); 1678 fdc->sc_overruns = 0; 1679 } 1680 if (++fdc->sc_overruns < 3) { 1681 fdc->sc_state = DOIO; 1682 goto loop; 1683 } 1684 } 1685 fdcretry(fdc); 1686 goto loop; 1687 } 1688 if (fdc->sc_errors) { 1689 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1690 fd->sc_skip / FD_BSIZE(fd), 1691 (struct disklabel *)NULL); 1692 printf("\n"); 1693 fdc->sc_errors = 0; 1694 } else { 1695 if (--fdc->sc_overruns < -20) { 1696 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1697 if (thr > 0) { 1698 thr--; 1699 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1700 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1701 #ifdef FD_DEBUG 1702 if (fdc_debug) 1703 printf("fdc: %d -> threshold\n", thr); 1704 #endif 1705 fdconf(fdc); 1706 } 1707 fdc->sc_overruns = 0; 1708 } 1709 } 1710 fd->sc_blkno += fd->sc_nblks; 1711 fd->sc_skip += fd->sc_nbytes; 1712 fd->sc_bcount -= fd->sc_nbytes; 1713 if (finfo == NULL && fd->sc_bcount > 0) { 1714 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1715 goto doseek; 1716 } 1717 fdfinish(fd, bp); 1718 goto loop; 1719 1720 case DORESET: 1721 /* try a reset, keep motor on */ 1722 fd_set_motor(fdc); 1723 delay(100); 1724 fdc->sc_nstat = 0; 1725 fdc->sc_itask = FDC_ITASK_SENSEI; 1726 fdc->sc_state = RESETCOMPLETE; 1727 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1728 fdc_reset(fdc); 1729 return (1); /* will return later */ 1730 1731 case RESETCOMPLETE: 1732 callout_stop(&fdc->sc_timo_ch); 1733 fdconf(fdc); 1734 1735 /* FALLTHROUGH */ 1736 case DORECAL: 1737 fdc->sc_state = RECALWAIT; 1738 fdc->sc_itask = FDC_ITASK_SENSEI; 1739 fdc->sc_nstat = 0; 1740 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1741 /* recalibrate function */ 1742 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1743 FDC_WRFIFO(fdc, fd->sc_drive); 1744 return (1); /* will return later */ 1745 1746 case RECALWAIT: 1747 callout_stop(&fdc->sc_timo_ch); 1748 fdc->sc_state = RECALCOMPLETE; 1749 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1750 /* allow 1/30 second for heads to settle */ 1751 callout_reset(&fdc->sc_intr_ch, hz / 30, 1752 fdcpseudointr, fdc); 1753 return (1); /* will return later */ 1754 } 1755 1756 case RECALCOMPLETE: 1757 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1758 #ifdef FD_DEBUG 1759 if (fdc_debug) 1760 fdcstatus(fdc, "recalibrate failed"); 1761 #endif 1762 fdcretry(fdc); 1763 goto loop; 1764 } 1765 fd->sc_cylin = 0; 1766 goto doseek; 1767 1768 case MOTORWAIT: 1769 if (fd->sc_flags & FD_MOTOR_WAIT) 1770 return (1); /* time's not up yet */ 1771 goto doseek; 1772 1773 default: 1774 fdcstatus(fdc, "stray interrupt"); 1775 return (1); 1776 } 1777 #ifdef DIAGNOSTIC 1778 panic("fdcintr: impossible"); 1779 #endif 1780 1781 xxx: 1782 /* 1783 * We get here if the chip locks up in FDC_WRFIFO() 1784 * Cancel any operation and schedule a reset 1785 */ 1786 callout_stop(&fdc->sc_timo_ch); 1787 fdcretry(fdc); 1788 (fdc)->sc_state = DORESET; 1789 goto loop; 1790 1791 #undef st0 1792 #undef st1 1793 #undef cyl 1794 } 1795 1796 void 1797 fdcretry(fdc) 1798 struct fdc_softc *fdc; 1799 { 1800 struct fd_softc *fd; 1801 struct buf *bp; 1802 int error = EIO; 1803 1804 fd = fdc->sc_drives.tqh_first; 1805 bp = BUFQ_PEEK(&fd->sc_q); 1806 1807 fdc->sc_overruns = 0; 1808 if (fd->sc_opts & FDOPT_NORETRY) 1809 goto fail; 1810 1811 switch (fdc->sc_errors) { 1812 case 0: 1813 if (fdc->sc_nstat == 7 && 1814 (fdc->sc_status[0] & 0xd8) == 0x40 && 1815 (fdc->sc_status[1] & 0x2) == 0x2) { 1816 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1817 error = EROFS; 1818 goto failsilent; 1819 } 1820 /* try again */ 1821 fdc->sc_state = 1822 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1823 break; 1824 1825 case 1: case 2: case 3: 1826 /* didn't work; try recalibrating */ 1827 fdc->sc_state = DORECAL; 1828 break; 1829 1830 case 4: 1831 if (fdc->sc_nstat == 7 && 1832 fdc->sc_status[0] == 0 && 1833 fdc->sc_status[1] == 0 && 1834 fdc->sc_status[2] == 0) { 1835 /* 1836 * We've retried a few times and we've got 1837 * valid status and all three status bytes 1838 * are zero. Assume this condition is the 1839 * result of no disk loaded into the drive. 1840 */ 1841 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1842 error = ENODEV; 1843 goto failsilent; 1844 } 1845 1846 /* still no go; reset the bastard */ 1847 fdc->sc_state = DORESET; 1848 break; 1849 1850 default: 1851 fail: 1852 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1853 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1854 fd->sc_skip / FD_BSIZE(fd), 1855 (struct disklabel *)NULL); 1856 printf("\n"); 1857 fdcstatus(fdc, "controller status"); 1858 } 1859 1860 failsilent: 1861 bp->b_flags |= B_ERROR; 1862 bp->b_error = error; 1863 fdfinish(fd, bp); 1864 } 1865 fdc->sc_errors++; 1866 } 1867 1868 int 1869 fdioctl(dev, cmd, addr, flag, p) 1870 dev_t dev; 1871 u_long cmd; 1872 caddr_t addr; 1873 int flag; 1874 struct proc *p; 1875 { 1876 struct fd_softc *fd; 1877 struct fdc_softc *fdc; 1878 struct fdformat_parms *form_parms; 1879 struct fdformat_cmd *form_cmd; 1880 struct ne7_fd_formb *fd_formb; 1881 int il[FD_MAX_NSEC + 1]; 1882 int unit; 1883 int i, j; 1884 int error; 1885 1886 unit = FDUNIT(dev); 1887 if (unit >= fd_cd.cd_ndevs) 1888 return (ENXIO); 1889 1890 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1891 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1892 1893 switch (cmd) { 1894 case DIOCGDINFO: 1895 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1896 return 0; 1897 1898 case DIOCWLABEL: 1899 if ((flag & FWRITE) == 0) 1900 return EBADF; 1901 /* XXX do something */ 1902 return (0); 1903 1904 case DIOCWDINFO: 1905 if ((flag & FWRITE) == 0) 1906 return (EBADF); 1907 1908 error = setdisklabel(fd->sc_dk.dk_label, 1909 (struct disklabel *)addr, 0, 1910 fd->sc_dk.dk_cpulabel); 1911 if (error) 1912 return (error); 1913 1914 error = writedisklabel(dev, fdstrategy, 1915 fd->sc_dk.dk_label, 1916 fd->sc_dk.dk_cpulabel); 1917 return (error); 1918 1919 case DIOCLOCK: 1920 /* 1921 * Nothing to do here, really. 1922 */ 1923 return (0); 1924 1925 case DIOCEJECT: 1926 if (*(int *)addr == 0) { 1927 int part = DISKPART(dev); 1928 /* 1929 * Don't force eject: check that we are the only 1930 * partition open. If so, unlock it. 1931 */ 1932 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1933 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1934 fd->sc_dk.dk_openmask) { 1935 return (EBUSY); 1936 } 1937 } 1938 /* FALLTHROUGH */ 1939 case ODIOCEJECT: 1940 fd_do_eject(fd); 1941 return (0); 1942 1943 case FDIOCGETFORMAT: 1944 form_parms = (struct fdformat_parms *)addr; 1945 form_parms->fdformat_version = FDFORMAT_VERSION; 1946 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1947 form_parms->ncyl = fd->sc_type->cylinders; 1948 form_parms->nspt = fd->sc_type->sectrac; 1949 form_parms->ntrk = fd->sc_type->heads; 1950 form_parms->stepspercyl = fd->sc_type->step; 1951 form_parms->gaplen = fd->sc_type->gap2; 1952 form_parms->fillbyte = fd->sc_type->fillbyte; 1953 form_parms->interleave = fd->sc_type->interleave; 1954 switch (fd->sc_type->rate) { 1955 case FDC_500KBPS: 1956 form_parms->xfer_rate = 500 * 1024; 1957 break; 1958 case FDC_300KBPS: 1959 form_parms->xfer_rate = 300 * 1024; 1960 break; 1961 case FDC_250KBPS: 1962 form_parms->xfer_rate = 250 * 1024; 1963 break; 1964 default: 1965 return (EINVAL); 1966 } 1967 return (0); 1968 1969 case FDIOCSETFORMAT: 1970 if ((flag & FWRITE) == 0) 1971 return (EBADF); /* must be opened for writing */ 1972 1973 form_parms = (struct fdformat_parms *)addr; 1974 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1975 return (EINVAL);/* wrong version of formatting prog */ 1976 1977 i = form_parms->nbps >> 7; 1978 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1979 i & ~(1 << (ffs(i)-1))) 1980 /* not a power-of-two multiple of 128 */ 1981 return (EINVAL); 1982 1983 switch (form_parms->xfer_rate) { 1984 case 500 * 1024: 1985 fd->sc_type->rate = FDC_500KBPS; 1986 break; 1987 case 300 * 1024: 1988 fd->sc_type->rate = FDC_300KBPS; 1989 break; 1990 case 250 * 1024: 1991 fd->sc_type->rate = FDC_250KBPS; 1992 break; 1993 default: 1994 return (EINVAL); 1995 } 1996 1997 if (form_parms->nspt > FD_MAX_NSEC || 1998 form_parms->fillbyte > 0xff || 1999 form_parms->interleave > 0xff) 2000 return EINVAL; 2001 fd->sc_type->sectrac = form_parms->nspt; 2002 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2003 return EINVAL; 2004 fd->sc_type->heads = form_parms->ntrk; 2005 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2006 fd->sc_type->secsize = ffs(i)-1; 2007 fd->sc_type->gap2 = form_parms->gaplen; 2008 fd->sc_type->cylinders = form_parms->ncyl; 2009 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2010 form_parms->nbps / DEV_BSIZE; 2011 fd->sc_type->step = form_parms->stepspercyl; 2012 fd->sc_type->fillbyte = form_parms->fillbyte; 2013 fd->sc_type->interleave = form_parms->interleave; 2014 return (0); 2015 2016 case FDIOCFORMAT_TRACK: 2017 if((flag & FWRITE) == 0) 2018 /* must be opened for writing */ 2019 return (EBADF); 2020 form_cmd = (struct fdformat_cmd *)addr; 2021 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2022 /* wrong version of formatting prog */ 2023 return (EINVAL); 2024 2025 if (form_cmd->head >= fd->sc_type->heads || 2026 form_cmd->cylinder >= fd->sc_type->cylinders) { 2027 return (EINVAL); 2028 } 2029 2030 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2031 M_TEMP, M_NOWAIT); 2032 if (fd_formb == 0) 2033 return (ENOMEM); 2034 2035 fd_formb->head = form_cmd->head; 2036 fd_formb->cyl = form_cmd->cylinder; 2037 fd_formb->transfer_rate = fd->sc_type->rate; 2038 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2039 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2040 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2041 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2042 2043 bzero(il, sizeof il); 2044 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2045 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2046 j++; 2047 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2048 j += fd->sc_type->interleave; 2049 } 2050 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2051 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2052 fd_formb->fd_formb_headno(i) = form_cmd->head; 2053 fd_formb->fd_formb_secno(i) = il[i+1]; 2054 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2055 } 2056 2057 error = fdformat(dev, fd_formb, p); 2058 free(fd_formb, M_TEMP); 2059 return error; 2060 2061 case FDIOCGETOPTS: /* get drive options */ 2062 *(int *)addr = fd->sc_opts; 2063 return (0); 2064 2065 case FDIOCSETOPTS: /* set drive options */ 2066 fd->sc_opts = *(int *)addr; 2067 return (0); 2068 2069 #ifdef FD_DEBUG 2070 case _IO('f', 100): 2071 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2072 fdcresult(fdc); 2073 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2074 for (i = 0; i < fdc->sc_nstat; i++) 2075 printf(" 0x%x", fdc->sc_status[i]); 2076 printf(">\n"); 2077 return (0); 2078 2079 case _IOW('f', 101, int): 2080 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2081 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2082 fdconf(fdc); 2083 return (0); 2084 2085 case _IO('f', 102): 2086 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2087 fdcresult(fdc); 2088 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2089 for (i=0; i< fdc->sc_nstat; i++) 2090 printf(" 0x%x", fdc->sc_status[i]); 2091 printf(">\n"); 2092 return (0); 2093 #endif 2094 default: 2095 return (ENOTTY); 2096 } 2097 2098 #ifdef DIAGNOSTIC 2099 panic("fdioctl: impossible"); 2100 #endif 2101 } 2102 2103 int 2104 fdformat(dev, finfo, p) 2105 dev_t dev; 2106 struct ne7_fd_formb *finfo; 2107 struct proc *p; 2108 { 2109 int rv = 0, s; 2110 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2111 struct fd_type *type = fd->sc_type; 2112 struct buf *bp; 2113 2114 /* set up a buffer header for fdstrategy() */ 2115 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2116 if (bp == 0) 2117 return (ENOBUFS); 2118 2119 memset((void *)bp, 0, sizeof(struct buf)); 2120 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2121 bp->b_proc = p; 2122 bp->b_dev = dev; 2123 2124 /* 2125 * Calculate a fake blkno, so fdstrategy() would initiate a 2126 * seek to the requested cylinder. 2127 */ 2128 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2129 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2130 / DEV_BSIZE; 2131 2132 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2133 bp->b_data = (caddr_t)finfo; 2134 2135 #ifdef FD_DEBUG 2136 if (fdc_debug) { 2137 int i; 2138 2139 printf("fdformat: blkno 0x%x count %ld\n", 2140 bp->b_blkno, bp->b_bcount); 2141 2142 printf("\tcyl:\t%d\n", finfo->cyl); 2143 printf("\thead:\t%d\n", finfo->head); 2144 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2145 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2146 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2147 printf("\ttrack data:"); 2148 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2149 printf(" [c%d h%d s%d]", 2150 finfo->fd_formb_cylno(i), 2151 finfo->fd_formb_headno(i), 2152 finfo->fd_formb_secno(i) ); 2153 if (finfo->fd_formb_secsize(i) != 2) 2154 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2155 } 2156 printf("\n"); 2157 } 2158 #endif 2159 2160 /* now do the format */ 2161 fdstrategy(bp); 2162 2163 /* ...and wait for it to complete */ 2164 s = splbio(); 2165 while (!(bp->b_flags & B_DONE)) { 2166 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2167 if (rv == EWOULDBLOCK) 2168 break; 2169 } 2170 splx(s); 2171 2172 if (rv == EWOULDBLOCK) { 2173 /* timed out */ 2174 rv = EIO; 2175 biodone(bp); 2176 } 2177 if (bp->b_flags & B_ERROR) { 2178 rv = bp->b_error; 2179 } 2180 free(bp, M_TEMP); 2181 return (rv); 2182 } 2183 2184 void 2185 fdgetdisklabel(dev) 2186 dev_t dev; 2187 { 2188 int unit = FDUNIT(dev), i; 2189 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2190 struct disklabel *lp = fd->sc_dk.dk_label; 2191 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2192 2193 bzero(lp, sizeof(struct disklabel)); 2194 bzero(lp, sizeof(struct cpu_disklabel)); 2195 2196 lp->d_type = DTYPE_FLOPPY; 2197 lp->d_secsize = FD_BSIZE(fd); 2198 lp->d_secpercyl = fd->sc_type->seccyl; 2199 lp->d_nsectors = fd->sc_type->sectrac; 2200 lp->d_ncylinders = fd->sc_type->cylinders; 2201 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2202 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2203 lp->d_rpm = 3600; /* XXX like it matters... */ 2204 2205 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2206 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2207 lp->d_interleave = 1; 2208 2209 lp->d_partitions[RAW_PART].p_offset = 0; 2210 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2211 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2212 lp->d_npartitions = RAW_PART + 1; 2213 2214 lp->d_magic = DISKMAGIC; 2215 lp->d_magic2 = DISKMAGIC; 2216 lp->d_checksum = dkcksum(lp); 2217 2218 /* 2219 * Call the generic disklabel extraction routine. If there's 2220 * not a label there, fake it. 2221 */ 2222 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2223 strncpy(lp->d_packname, "default label", 2224 sizeof(lp->d_packname)); 2225 /* 2226 * Reset the partition info; it might have gotten 2227 * trashed in readdisklabel(). 2228 * 2229 * XXX Why do we have to do this? readdisklabel() 2230 * should be safe... 2231 */ 2232 for (i = 0; i < MAXPARTITIONS; ++i) { 2233 lp->d_partitions[i].p_offset = 0; 2234 if (i == RAW_PART) { 2235 lp->d_partitions[i].p_size = 2236 lp->d_secpercyl * lp->d_ncylinders; 2237 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2238 } else { 2239 lp->d_partitions[i].p_size = 0; 2240 lp->d_partitions[i].p_fstype = FS_UNUSED; 2241 } 2242 } 2243 lp->d_npartitions = RAW_PART + 1; 2244 } 2245 } 2246 2247 void 2248 fd_do_eject(fd) 2249 struct fd_softc *fd; 2250 { 2251 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2252 2253 if (CPU_ISSUN4C) { 2254 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2255 delay(10); 2256 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2257 return; 2258 } 2259 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2260 bus_space_tag_t t = fdc->sc_bustag; 2261 bus_space_handle_t h = fdc->sc_handle; 2262 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2263 2264 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2265 delay(10); 2266 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2267 return; 2268 } 2269 } 2270 2271 #ifdef MEMORY_DISK_HOOKS 2272 int fd_read_md_image __P((size_t *, caddr_t *)); 2273 #endif 2274 2275 /* ARGSUSED */ 2276 void 2277 fd_mountroot_hook(dev) 2278 struct device *dev; 2279 { 2280 int c; 2281 2282 fd_do_eject((struct fd_softc *)dev); 2283 printf("Insert filesystem floppy and press return."); 2284 for (;;) { 2285 c = cngetc(); 2286 if ((c == '\r') || (c == '\n')) { 2287 printf("\n"); 2288 break; 2289 } 2290 } 2291 } 2292 2293 #ifdef MEMORY_DISK_HOOKS 2294 2295 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2296 2297 int 2298 fd_read_md_image(sizep, addrp) 2299 size_t *sizep; 2300 caddr_t *addrp; 2301 { 2302 struct buf buf, *bp = &buf; 2303 dev_t dev; 2304 off_t offset; 2305 caddr_t addr; 2306 2307 dev = makedev(54,0); /* XXX */ 2308 2309 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2310 *addrp = addr; 2311 2312 if (fdopen(dev, 0, S_IFCHR, NULL)) 2313 panic("fd: mountroot: fdopen"); 2314 2315 offset = 0; 2316 2317 for (;;) { 2318 bp->b_dev = dev; 2319 bp->b_error = 0; 2320 bp->b_resid = 0; 2321 bp->b_proc = NULL; 2322 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2323 bp->b_blkno = btodb(offset); 2324 bp->b_bcount = DEV_BSIZE; 2325 bp->b_data = addr; 2326 fdstrategy(bp); 2327 while ((bp->b_flags & B_DONE) == 0) { 2328 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2329 } 2330 if (bp->b_error) 2331 panic("fd: mountroot: fdread error %d", bp->b_error); 2332 2333 if (bp->b_resid != 0) 2334 break; 2335 2336 addr += DEV_BSIZE; 2337 offset += DEV_BSIZE; 2338 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2339 break; 2340 } 2341 (void)fdclose(dev, 0, S_IFCHR, NULL); 2342 *sizep = offset; 2343 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2344 return (0); 2345 } 2346 #endif 2347
Indexes created Fri Oct 03 02:09:57 GMT 2025